CA2051309A1 - Injection mold and coupling assembly for use in an injection molding machine - Google Patents
Injection mold and coupling assembly for use in an injection molding machineInfo
- Publication number
- CA2051309A1 CA2051309A1 CA002051309A CA2051309A CA2051309A1 CA 2051309 A1 CA2051309 A1 CA 2051309A1 CA 002051309 A CA002051309 A CA 002051309A CA 2051309 A CA2051309 A CA 2051309A CA 2051309 A1 CA2051309 A1 CA 2051309A1
- Authority
- CA
- Canada
- Prior art keywords
- mold
- coupling part
- side coupling
- coupling
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0083—Electrical or fluid connection systems therefor
Abstract
ABSTRACT
The coupling means of the assembly comprise machine-side coupling parts, which are movable by means of hydraulic cylinders into coupling engagement with the mold-side coupling parts secured to the sections of the injection mold. As a result, the movable mold section is provided with a coupling for connecting the mold to supply lines for a performance of auxiliary operations in both mold sections and the stationary mold section is provided with a coupling for conducting a fluid for the temperature control of both mold sections. Because the coupling for the temperature control and the coupling for any auxiliary operations to be performed in the injection mold are separated from each other, the expenditure involved in the coupling equipment can be adapted to the current requirements of a potential buyer and nevertheless it is possible to effect a temperature control of the injection mold also when it is outside the clamping region of the injection molding machine.
The coupling means of the assembly comprise machine-side coupling parts, which are movable by means of hydraulic cylinders into coupling engagement with the mold-side coupling parts secured to the sections of the injection mold. As a result, the movable mold section is provided with a coupling for connecting the mold to supply lines for a performance of auxiliary operations in both mold sections and the stationary mold section is provided with a coupling for conducting a fluid for the temperature control of both mold sections. Because the coupling for the temperature control and the coupling for any auxiliary operations to be performed in the injection mold are separated from each other, the expenditure involved in the coupling equipment can be adapted to the current requirements of a potential buyer and nevertheless it is possible to effect a temperature control of the injection mold also when it is outside the clamping region of the injection molding machine.
Description
~ 2 --BACKGROUND OF THE INVENTION
Field of the Invention ~ his invention relates to an assembly which comprises an injsction mold of an injection molding ~machine, which mold comprises back plates, and coupling .1 mold r ll~ c~ means ~or supplylng temperature control fluids and for .2 ~ '~l withdrawing such fluids from said mold, and for ~electric power and oil under~ressure and/or compressed air ~
transml~tl-ng~ ~or the per~ormance o~ auxlliary operations in the mold, such as the hydraulic pulling of a core from said mold, an ejection of moldings from said mold by means of compressed air, and a delivery of control-signals. Said coupling means comprise a mold-side coupling part, which is secured to the movable mold section of the injection mold, and together with a : 15 machine-side coupling part is adapted to constitute a movable coupling for connecting supply lines to said mold, and another mold-side coupling part, which is secured to the stationary mold section of the injection mold and together with another ~: 20 machine-side coupling part is adapted to constitute a stationary coupling for connecting supply lines to said mold. The assembly also comprises hydraulic cylinders, which are operable in dependence on the ~ program of a computer of the injection molding machine ~ 25 to couple each of said machine 9ide coupling parts to the associated mold-side coupling parts7 wherein the .~ . . .
, . .
- 3 ~ 3~
closing stroke of the hydraulic cylinder comprises a coupling movement for coupling the machine-side coupling part to the mold-sidle coupling part D _ In the operation of injection molding machines the injection mold must be preheated before the beginning of the molding operation to an optimum temperature for making the molding. ~hat preheating will be described hereinafter as the temperature control o~ the injection mold and is effected in that a temperature control liquid is pumped through suitable temperature control passages of the body of the injection mold. For an automatic control by which the injection mold is maintained at a desired temper-ature, which depends on the optimum operating temper-ature, it is ~lso necessary to supply electric power, . 20 e.g., for temperature ~ensors, to ~aid mold. In ~ most ~2. ~ 1~ cases the temperature control is effected when the injection mold is in its operative position in the clamping region of the injection molding machine.
Certain auxiliary operations may have to be performed in the injection mold during the molding operation, e.g., when it is desired to make moldings ., . . ~ , . . ..
, ~, . . ~ .
having an intricate shape or moldings formed with internal or external screw threads. In such cases the surfaces defining the mold cavity often comprise surfaces of metal cores, with or without screw thread-molding portions. To permit the removal of the moldingfrom the mold, the cores are pulled or unscrewed from the molding by means of motor drives incorporated in the injection mold or by means of electric motors.
Other auxiliary operations may also be required to be per~ormed by means of compressed air, e.g., to blow the molding out of the mold. Said auxiliary operations to be performed in the injection mold may depend on a supply of oil under pressure and/or ; compressed air or of electric power in the form of electric signals for controlling or automatically controlling such auxiliary operating functions.
A known injection mold and coupling means assembly of the kind described hereinbefore is disclosed in DE 32 28 434 A1 and in the company publication ~ ~`A Lt8. Netstal-; ,2 . l ~c i~ C~I~8752 Nafels, Switzerland. In that known assembly all supply lines are adapted to be coupled to and to be uncoupled from the injection mold when it is in its operative position in the clamping region ( ~. 25 of the injection molding machine. For that purpose, ~A for both mold sections identical coupling part carrie ~ rovided, which ' : .. ~, ,, - ,: '' ,: : . -; ,:
: : ::: ~ .,. :
., ~ . ::: . .
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carry the coupling parts for the temperature control and the coupling parts for the auxiliary operations. One coupling part carrier is secured to the back plate of the stationary mold section and anothert identical coupling carrier is secured to the back plate of the movable mold section. Said mold-side coupling part carriers are associated and aligned with machine-side coupling part carriers~ which are also identical to each other. In such an injection mold and coupling means assembly the couplings are substantially sym-metrically arranged on the injection mold so that the manufacture is facilitated but the connections of the supply lines for the temperature control, on the one hand, and the connections of the supply lines for the auxiliary operations, on the other hand, cannot be made at spaced apart locations and at different times. Besides, a potential buyer can only decide to purchase the entire coupling means for the tem-` perature control and for all auxiliary operations even when certain auxiliary operations will not berequired. Such coupling means must be provided with a hydraulic cylinder for moving the coupling parts into engagement with each other and for locking the coupling parts in their engaged position and requires a large space.
-' , ', ~ :
Field of the Invention ~ his invention relates to an assembly which comprises an injsction mold of an injection molding ~machine, which mold comprises back plates, and coupling .1 mold r ll~ c~ means ~or supplylng temperature control fluids and for .2 ~ '~l withdrawing such fluids from said mold, and for ~electric power and oil under~ressure and/or compressed air ~
transml~tl-ng~ ~or the per~ormance o~ auxlliary operations in the mold, such as the hydraulic pulling of a core from said mold, an ejection of moldings from said mold by means of compressed air, and a delivery of control-signals. Said coupling means comprise a mold-side coupling part, which is secured to the movable mold section of the injection mold, and together with a : 15 machine-side coupling part is adapted to constitute a movable coupling for connecting supply lines to said mold, and another mold-side coupling part, which is secured to the stationary mold section of the injection mold and together with another ~: 20 machine-side coupling part is adapted to constitute a stationary coupling for connecting supply lines to said mold. The assembly also comprises hydraulic cylinders, which are operable in dependence on the ~ program of a computer of the injection molding machine ~ 25 to couple each of said machine 9ide coupling parts to the associated mold-side coupling parts7 wherein the .~ . . .
, . .
- 3 ~ 3~
closing stroke of the hydraulic cylinder comprises a coupling movement for coupling the machine-side coupling part to the mold-sidle coupling part D _ In the operation of injection molding machines the injection mold must be preheated before the beginning of the molding operation to an optimum temperature for making the molding. ~hat preheating will be described hereinafter as the temperature control o~ the injection mold and is effected in that a temperature control liquid is pumped through suitable temperature control passages of the body of the injection mold. For an automatic control by which the injection mold is maintained at a desired temper-ature, which depends on the optimum operating temper-ature, it is ~lso necessary to supply electric power, . 20 e.g., for temperature ~ensors, to ~aid mold. In ~ most ~2. ~ 1~ cases the temperature control is effected when the injection mold is in its operative position in the clamping region of the injection molding machine.
Certain auxiliary operations may have to be performed in the injection mold during the molding operation, e.g., when it is desired to make moldings ., . . ~ , . . ..
, ~, . . ~ .
having an intricate shape or moldings formed with internal or external screw threads. In such cases the surfaces defining the mold cavity often comprise surfaces of metal cores, with or without screw thread-molding portions. To permit the removal of the moldingfrom the mold, the cores are pulled or unscrewed from the molding by means of motor drives incorporated in the injection mold or by means of electric motors.
Other auxiliary operations may also be required to be per~ormed by means of compressed air, e.g., to blow the molding out of the mold. Said auxiliary operations to be performed in the injection mold may depend on a supply of oil under pressure and/or ; compressed air or of electric power in the form of electric signals for controlling or automatically controlling such auxiliary operating functions.
A known injection mold and coupling means assembly of the kind described hereinbefore is disclosed in DE 32 28 434 A1 and in the company publication ~ ~`A Lt8. Netstal-; ,2 . l ~c i~ C~I~8752 Nafels, Switzerland. In that known assembly all supply lines are adapted to be coupled to and to be uncoupled from the injection mold when it is in its operative position in the clamping region ( ~. 25 of the injection molding machine. For that purpose, ~A for both mold sections identical coupling part carrie ~ rovided, which ' : .. ~, ,, - ,: '' ,: : . -; ,:
: : ::: ~ .,. :
., ~ . ::: . .
~~ 3~
carry the coupling parts for the temperature control and the coupling parts for the auxiliary operations. One coupling part carrier is secured to the back plate of the stationary mold section and anothert identical coupling carrier is secured to the back plate of the movable mold section. Said mold-side coupling part carriers are associated and aligned with machine-side coupling part carriers~ which are also identical to each other. In such an injection mold and coupling means assembly the couplings are substantially sym-metrically arranged on the injection mold so that the manufacture is facilitated but the connections of the supply lines for the temperature control, on the one hand, and the connections of the supply lines for the auxiliary operations, on the other hand, cannot be made at spaced apart locations and at different times. Besides, a potential buyer can only decide to purchase the entire coupling means for the tem-` perature control and for all auxiliary operations even when certain auxiliary operations will not berequired. Such coupling means must be provided with a hydraulic cylinder for moving the coupling parts into engagement with each other and for locking the coupling parts in their engaged position and requires a large space.
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2 ~
Another known injection mold and coupling means assembly of the ;ind described firs-t hereinbefore is disclosed in U.S0 Patent 4,710,121. In that assembly the supply lines for the temperature control ~d g ~1~ 5 P--inc~ for auxili~ry opcratio~ are coupled to and uncoupled from the injection mold when the latter is held on a conditioning table outside the injection molding machine. When a new mold has been temperature controlled and is moved to the clamping region to replace a previously used mold, the coupling connections are maintalned as well as during the transfer of a " previously used mold from the clamping region of the ~` ~ machine to the conditioning table. ~he conditioning identical table is provided with machine-sid~r~oupling parts(see Fig.7) which are disposed above the injection mold when it is in position on the conditioning table and said machine-side coupling parts are operatively connected : to hydraulic cylinders for actuating said machine-side coupling parts. The machine-side coupling parts are 2~ guided during the closing movement of the hydraulic cylinder on vertical coupling pins, which are supported on a bridge provided on the conditioning table, For the movement o~ the injection mold provided with the supply lines from the conditioning table to the clamping region of the injection molding machine and in the opposite direction it is necessary to provide the machine-side _ 7_ 2,~33~3~
supply lines with flexible and freely movable end sections. ~--th-e kno~n coupl;llg m~ls it is l~t h I -po~3ible to provide for a uscful 3p~ti~1 ~istribu~i~
or scp~ration of th~ coupling ~CQnS for the te~e~
ef~ c~soupling ~can~ for a~lxilial-~
~ ~ q~ ~perationE ~nd of t~e mc~ns for actuQtin~ 3aid coupli ; mcrns. ~hcreOE~ ~dditional couplings (as indicated 36 to 39 in Figures 1, 2, 4) are provided for auxiliary moved operations said addition~l coluplings are~ln a closed by motlve ~ower of wnen 1l st ~ ~ injection mo ~ moved from the condi-tioning table into the clamping region. In such an arrangement it is inherently impossible to ensure that the coupling parts will be closed in a sufficiently mQt;ve power concentric position. Besides, the Eor~e ~ectorlby wh ch the mold is moved from the conditioning table to the clamping region is often not sufficient for effecting a reliable coupling. But the known assembly affords the great advantage that a n~w injection mold before ; it is used can be held on a conditioning table and can suitabIy be temperature-controlled to be at the molding temperature while the molding operation performed by the injection molding machine with the presently installed injection mold, which will subsequently be replaced, is still continued. As the temperature control of a new injection mold nay often take more than one hour, the possibility , - 8 - ?~
just explained will substantially shorten the downtimes involved in an exchange of the molds.
It is an object of the invention to provide an injection mold and coupling assembly which is of the kind described first hereinbefore and which is so designed that the coupling parts for the temperature control are operatively connected to first actuating means and comprise a mold-side coupling part, which ; 10 is mounted on one mold section adjace~t to the back plate thereof, and most or all of the coupling means which are optio~ally provided for any optionally required auxiliary operations are operatively connected to second actuating means and mounted on the other mold section adjacent to the back plate thereof and occupy only a small space so that they can be provided in adaptation to the requirements to be met for given injection molding operations.
It is a further object so to design such an assembly that a temperature control of the mold can be effected when the mold is disposed outside the injection molding machine and nevertheless it is sufficient to couple power suppl-y lines for auxiliary operations to a mold-side coupling part mounted on the other mold section adjacent to its back plate only when said mold i9 in its operative position in the clamping . region and only if such auxiliary operations are required to be g ~ performed.
~ '3 ~
It is a further object so to design such an assembly that the coupling c means for auxiliary operations, whi~n are spaced apart from the coupling means for the temperature control, are adapted to couple eliable by a single hydraulic cylinder requiring little space.
~,c~n. Said objects are accomplished in accordance with the invention in that one of said couplings is 5 operable to selectively couple said mold to power supply lines required for the performance of said auY~iliary operations ~n bo~h sQid mo~d scc~ions5 the other of said couplings is adapted to selectively couple said mold to fluid supply lines for the temper-10 ature control of both said mold sections, and the machine-side coupling part of each of said couplings is operatively connected to the associated one of said hydraulic cylinders by means for converting the closing in a first dir~ gn stroke of said cylinder into a coupling movement~for 15 coupling the associa-ted machine-side coupling part to the associated mold-side coupling part and into a # movement clamping movement' by whi~f~~carrier element carrying said hydraulic cylinder is forced against the adjacent mold section.
In such an assembly the advantage afforded in the assembly known from U.S. Patent 4,710,121 and residing in that the downti~e involved in an exchange of the injection mold is shortened because the mold is temperature controlled while it is outside the clamping region will fully be preserved but a large number of power supply lines required for a performance of X in a direction which is contrary to said first direction .
Another known injection mold and coupling means assembly of the ;ind described firs-t hereinbefore is disclosed in U.S0 Patent 4,710,121. In that assembly the supply lines for the temperature control ~d g ~1~ 5 P--inc~ for auxili~ry opcratio~ are coupled to and uncoupled from the injection mold when the latter is held on a conditioning table outside the injection molding machine. When a new mold has been temperature controlled and is moved to the clamping region to replace a previously used mold, the coupling connections are maintalned as well as during the transfer of a " previously used mold from the clamping region of the ~` ~ machine to the conditioning table. ~he conditioning identical table is provided with machine-sid~r~oupling parts(see Fig.7) which are disposed above the injection mold when it is in position on the conditioning table and said machine-side coupling parts are operatively connected : to hydraulic cylinders for actuating said machine-side coupling parts. The machine-side coupling parts are 2~ guided during the closing movement of the hydraulic cylinder on vertical coupling pins, which are supported on a bridge provided on the conditioning table, For the movement o~ the injection mold provided with the supply lines from the conditioning table to the clamping region of the injection molding machine and in the opposite direction it is necessary to provide the machine-side _ 7_ 2,~33~3~
supply lines with flexible and freely movable end sections. ~--th-e kno~n coupl;llg m~ls it is l~t h I -po~3ible to provide for a uscful 3p~ti~1 ~istribu~i~
or scp~ration of th~ coupling ~CQnS for the te~e~
ef~ c~soupling ~can~ for a~lxilial-~
~ ~ q~ ~perationE ~nd of t~e mc~ns for actuQtin~ 3aid coupli ; mcrns. ~hcreOE~ ~dditional couplings (as indicated 36 to 39 in Figures 1, 2, 4) are provided for auxiliary moved operations said addition~l coluplings are~ln a closed by motlve ~ower of wnen 1l st ~ ~ injection mo ~ moved from the condi-tioning table into the clamping region. In such an arrangement it is inherently impossible to ensure that the coupling parts will be closed in a sufficiently mQt;ve power concentric position. Besides, the Eor~e ~ectorlby wh ch the mold is moved from the conditioning table to the clamping region is often not sufficient for effecting a reliable coupling. But the known assembly affords the great advantage that a n~w injection mold before ; it is used can be held on a conditioning table and can suitabIy be temperature-controlled to be at the molding temperature while the molding operation performed by the injection molding machine with the presently installed injection mold, which will subsequently be replaced, is still continued. As the temperature control of a new injection mold nay often take more than one hour, the possibility , - 8 - ?~
just explained will substantially shorten the downtimes involved in an exchange of the molds.
It is an object of the invention to provide an injection mold and coupling assembly which is of the kind described first hereinbefore and which is so designed that the coupling parts for the temperature control are operatively connected to first actuating means and comprise a mold-side coupling part, which ; 10 is mounted on one mold section adjace~t to the back plate thereof, and most or all of the coupling means which are optio~ally provided for any optionally required auxiliary operations are operatively connected to second actuating means and mounted on the other mold section adjacent to the back plate thereof and occupy only a small space so that they can be provided in adaptation to the requirements to be met for given injection molding operations.
It is a further object so to design such an assembly that a temperature control of the mold can be effected when the mold is disposed outside the injection molding machine and nevertheless it is sufficient to couple power suppl-y lines for auxiliary operations to a mold-side coupling part mounted on the other mold section adjacent to its back plate only when said mold i9 in its operative position in the clamping . region and only if such auxiliary operations are required to be g ~ performed.
~ '3 ~
It is a further object so to design such an assembly that the coupling c means for auxiliary operations, whi~n are spaced apart from the coupling means for the temperature control, are adapted to couple eliable by a single hydraulic cylinder requiring little space.
~,c~n. Said objects are accomplished in accordance with the invention in that one of said couplings is 5 operable to selectively couple said mold to power supply lines required for the performance of said auY~iliary operations ~n bo~h sQid mo~d scc~ions5 the other of said couplings is adapted to selectively couple said mold to fluid supply lines for the temper-10 ature control of both said mold sections, and the machine-side coupling part of each of said couplings is operatively connected to the associated one of said hydraulic cylinders by means for converting the closing in a first dir~ gn stroke of said cylinder into a coupling movement~for 15 coupling the associa-ted machine-side coupling part to the associated mold-side coupling part and into a # movement clamping movement' by whi~f~~carrier element carrying said hydraulic cylinder is forced against the adjacent mold section.
In such an assembly the advantage afforded in the assembly known from U.S. Patent 4,710,121 and residing in that the downti~e involved in an exchange of the injection mold is shortened because the mold is temperature controlled while it is outside the clamping region will fully be preserved but a large number of power supply lines required for a performance of X in a direction which is contrary to said first direction .
3 ~ ~
auxiliary operations need not be connected to the mold when it is outside the clamping region. As has been discussed hereinbefore in the first paragraph of the description of the prior art it is necessary in the arrangement just discussed that certain auxiliar operations are performed also in connectlon with the temperature control of the injection mold while it is arranged on the conditioning table and such auxiliary functions may particularly include operations required for an automatic control of the temperature of the mold at a set point. But most or all of the power supply lines required for the performance of auxiliary operations in the mold will not be connected to the mold until it is disposed in the clamping region of the ~ 15 injection molding machine so that the coupling of - said power supply lines is effected at a different time and at a different location from the coupling of the fluid supply lines for the temperature control.
~uch a separation of the coupling means for the temperature control from the coupling means for most or all of the power supply lines required for ; performing the auxiliary operations affords the ad~antage that only fluid supply lines for the tem-perature control must extend ~rom the sources of supply associated ~ith the injection molding machine as far as to thé conditioning table but it ~ill be v sufficient for power suppl~ lines for the performance of auxiliary operations to extencL only along a short distance to the clamping region. For this reason it will also be possible to use smaller coupling means which are to be coupled when the mold is disposed on the conditioning table because such coupling means need not be connected to power supply lines required for the performance of auxiliary operations. ~he fact that said coupling means are smaller in size and used to connect a smaller number of supply lines will facilitate the transfer of the injection mold between the conditioni~g table and the clamping region. If the injection mold is supplied with power in accordance with the concept which has just been outlined, a given injection molding machine Nhich is delivered to the operator may be provided with coupling means for connecting a larger or sm~ller number of supply lines to the mold so that the operator may restrict his expenditure involved in the injection molding machine to the financial resources which are then at his disposal and to his current automation re~
quirements In case further requirements arise in the future, they can be met by a procuring of additional coupling means. Besides, the coupling me~ns can be accommodated within a relatively small space and it is sufficient to provide for each coupling a single ?i~3~ .
~1 actuating means for performing the coupling movement and the clamping'q~ movement. This is important, because the space about the mold in ~ q ~ many cases is required by auxiliary assemblies par example assemblies for taking off molded parts from the mold opened.
; Brief Description of the Drawin~
Figures 1 and 2 are, respectively, a rear elevation and a top plan view showing an injection mold and coupling assembly disposed in the clamping region of an injection molding machine.
Figures 3 and 4 are fragmentary views of portions of Figures 1 and 2, respectively and show the mold-side coupling parts and the associated machine-side coupling parts.
Figures 5 arLd 6 are fragmentary vertical sectional views showing the same portions as Figures 3 and 4, respectively, when the mold-side coupling parts and the associated machine-side coupling parts are uncoupled from each other.
Figure 6 is a view that is similar to Figure 5 and shows said coupling parts when they are couplecl to each other.
Figures 7 and 8 are sectional views taken on lines 7-7 and 8-8, respectively, of Figure 5.
Figure 9 is a top p:Lan view-showing an injection mold provided with core-pulling means and with its first and second mold-side coupling parts.
Detailed Description of the Preferred Embodiment An illustrative embodiment of the invention will now be described more in detail with reference to the drawing.
In accordance with Figures 1, 2, and 9, an injection mold S comprises a stationary mold section Sa and a movable mold section Sb, each of which is provided with a back plate 11 and by means of said back plate ~1 is adapted to be detachably fixed to an associated mold carrier 13 or 13' of the clamping unit of an injection molding machine. lhe terms "stationary" and "movable"
used in connection wlth the mold sec-tions Sa and Sb and the mold carriers 13 and 13' relate to the behavior of said mold sections and mold carriers during the molding operation performed while the mold S is in an operative position in the clamping region of the machine.,But the two mold sections Sa and Sb are jointly movable between said clamping region and a conditioning table outside the machineO
Coupling means are provided for connecting the mold S to supply lines for a fluid for effecting ~,C~' # Said behavior refers to the opening and closing the mold.
~ . .
- 14 - 20~ 3~
a temperature control of the inold and to power supply lines for a supply of power for a performance of auxiliary operations in the mold S. Such auxiliary operations may comprise a hydraulic pulling of cores, an ejection of moldings by means of compressed air, l/ C~h control-V~ ~ j and 2 transmissi~ signals. The stationary mold section 5a is provided with a first mold-side coupling part 14, which is adapted to be coupled to a first machine-side coupling part 15 to constitute a stationary coupling T for supply lines for a fluid for a tempera-ture control of the injection mold. The movable mold section ~b is provided with a second mold-side coupllng part 26, 28a, which is adapted to be coupled to a second machine-side coupling part 27, 28b to constitute a movable coupling F for connecting power supply lines to the mold S. The first mold-side coupling part comprises a hydraulic upper coupling element 27 and an electrical lower coupling element 28b. ~wo hydraulic cylinders 23 are provided for actuating the movable coupling F and the stationary coupling T
by a closing stroke so that the machine-side coupl1ng parts 27, 28b; and 15 can be coupled to and uncoupled from the mold-side coupling parts 26, 28a; 14. ~he coupling ~ connected to the stationary mold section Sa connects the mold S to the supply lines for the temperature control o~ the mold S. The coupling F
- ,. .... , . ,, , ;,. . - ,.
connected to the movable mold section Sb connects the mold S to most or all of the power supply lines required for auxiliary operations in the mold ~. In Figures 1 to 8 the injection mold S is shown in its operative position in the clamping region of the injection molding machine. The mold S has been transferred to said clamping region from a conditioning table.
For effecting a temperature control of the mold S, the stationary coupling T is in a closed state while the mold S is disposed on the conditioning table and remains in said closed state during the transfer of the mold S to the clamping region znd while the mold S
is operated in the clamping region to per~orm a molding operation.
The stationary coupling T which is associated with the stationary mold section Sa is opened and closed by a coupling movement in a direction which is parallel to the parting plane t-t of the injection ~old S. The movable coupling F which is associated with the movable mold section Sb is opened and closed by a coupling movement whiGh is at right angles to the parting plane t-t. As is particularly apparent from Figures 2 and 9 the back plates 11 protrude rearwardly from the body of the mold S. Each of the mold-side coupling parts 14 and 26 is provided adjacent to that portion of the associated back plate 11 which protrudes from " . , ~
3 '~
; the body of the mold. One mold-side coupling part 14 is secured to the top edge of the back plate 11 of the stationary mold section Sa. The other ~old-side coupling part 26 is secured to a mounting pla-te 18, which is secured to the movable mold carrier 13'. As is particularly apparent from Figure 2 the mounting plate 18 extends partly into a mating recess formed in the back plate 11. The direction of the stroke of each of the hydraulic cylinders 23 and 15a of the assembly is at right angles to the direction of the coupling and uncoupling movements of that machine-side coupling part which is actuated by said cylinder. The force vector of the closing stroke of each of said cylinders is deflected through 90 by suitable cam plates 25, which are formed with oblique cam slots 25a.
Each cam plate 25 is connected to the piston rod 23e of the hydraulic cylinder 23 by a pi~ot 23h. The force vector or the stroke of the cylinder 23 is deflected by the cooperation of the cam follower pins 22b and the oblique cam slots 25a of the cam plates 25. The cam follower pins 22b are mounted on a carriage 22, which carries the machine-side coupling parts 27, 28b.
The carriage 22 together with the associated machine-side coupling parts 27 or 28b and a carrier 19 carrying the hydraulic cylinder 23 constitutes a subassembly, which is mounted for a limited horizontal displacement 7.,J ~
in a vertical bearing plate 20, which is secured to the movable mold carrier 13' by means of screws 21 when the injection mold S is in operat;ive position in the clamping region of the machine.
Said unit is shown in Figures 1 to 5 before it is secured to the fitting plate 18 when the cou-pling F has not yet been closed.
As is particularly apparent from Figures 3 to 6, the carriage 22 comprises a vertical carrier plate 22a, which faces the mold S and to which the machine-side coupling parts 27, 28b are secured. ~he carriage 22 also comprises two horizontal legs 22c, which extend rearwardly from the carrier plate 22a.
The carriage 22 is horizontally slidably mounted on guide ribs 19c of a cylinder carrier 19, on which the hydraulic cylinder 23 is mounted. ~he hydraulic cylinder 23 comprises a cylinder block 23f, which is connected by screw fasteners 23g to mounting sockets 19d of the cylinder carrier 19 (Figure 3).
The piston 23d of the hydraulic cylinder 23 defines cylinder chambers 23bj which are connected to hydraulic ports 23c for supplying and withdrawing a hydraulic fluid to and from the chambers 23b. ~he rear cylinder ; chamber is closed by a cylinder cover 23a. Limit switches 24 serve to control the operation of the hydraulic cylinder 23. As is particularly apparent - 18 ~ 3 from ~igure 4 the elongate cylinder carrier 19 is provided with lateral projections 19b and by said projections 19b and associated screws 29 is supported on the bearing plate 20~ As will be explained herein-after the screws 29 serve as limiting means. The closingstroke of ~he hydraulic cylinder 23 disposed adjacent to the movable mold carrier 13' is converted into a coupling movement, by which the machine-side coupling part 27, 28b is moved into engagement with the mold-side coupling part 26, 28a, and into a clamping movement, by which the carrier 19, which carries the hydraulic cylinder 23, is forced against the movable mold section Sb. The coupling movement is limited in that a cam follower pin 22b of the carriage 22 engages one end of a limiting groove 20a formed in the bearlng plate 22. The cam follower pin 22b extends from the carriage 22 through the cam slot 25a of the adjacent cam plate 25 and into the limiting groove 20a. The clamping movement is limited by limiting recesses 20b (~igure 4) formed in the bearing plate 20. Screws 29 mounted in the carrier extend into the limiting recesses 20b with a lost motion, by which the clamping movement is determined.
During the last portion of the closing movement the coupling elements 27a, 28b' (~igure 3) of the machine-side coupling parts 27, 28b which are .: . , , - , :
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being actuated are coupled to the coupling elements 26a, 28a' (~igure 3, 5) of the mold-side eoupling parts 26, 28a.
During the closing stroke of the hydraulic cylinder 23 the carriage 22 carrying the coupling part 27, 28b and the carrier 19, which is provided with a locking nose 19a, are moved from the position shown in Figure 5 to the position shown in Figure 6 so that the carrier 19 performs the small lost motion to the right, whieh is permitted by the screws 29 in the limiting recess 20b, and the locking nose 19a is thus eaused to engage the forward faee of the mounting plate 18.#In dependenee on the len~th of the llmiting groove 20a (Figure 4) the carr age 22 moves to the left until the eam follower pin 22b engages the left-hand edge of the limiting groove 20a. ~he mutually opposite direetions of the movements of the earrier 19 ~nd the carriage 22 are due to the faet that a vertieal movement of the eam follower pin 22b in the eam slot 25a imparts to the earriage a horizontal movement to the left and imparts to the cylinder earrier 19 a horizontal movement to the right. Said horizontal movements eonstitute the coupling mo~ement and the clamping movement, respeetive-ly~
Because the hydraulic eylinder 23 ls fixedly mounted on the cylinder earrier 19 so that the latter # The vertical positioned mounting plate 18 fastened on the back plate is of a standardized size even if the actual molds are of diffe-rent size.
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_ 20 -constitutes an abutment for the cylinder 23, the closing stroke of the hydraulic cylinder 23 will impart the horizontal movement to the cylinder carrier 19 -to the extent determined by the lost motion of the screws 29 in the limiting recess0s 20b. For the protection of the electrical lower coupling elements 28a, 28b of the movable coupling ~ the machine-side coupling part 28b is buffered at its rear by coil springs.
In an injection mold and coupling assembly having such a design the subassembly which comprises the machine-side coupling part 27, 28b; the carriage 22 carrying said coupling part, the associated hydraulic cylinder 23 and the cylinder carrler 19 carr ing said bearing ~0 cylinder is supported by the ~e~r~ plate ~ on the ~ 5 movable mold carrier 13' for a limited sliding movement and when the coupling has been closed is firmly clamped against the back plate 11 of the movable mold section i a position in which the nose 19a of the cylinder carri-er 19 engages the back plate 11 on one side thereof and the carrier 22a included in the carriage 22 and carrying the coupling part 27, 28b engages the back plate 11 on the other side thereof. Ihis means that for said clamping and coupling movements the closing stroke of the hydraulic cylinder 23 must be converted to mutually opposite movements of the cylinder carrier 19 and of the carriage 22. In dependence on the initial - :
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position the clamping movemen-t o~ the cylinder carri-er 19 may be relatively small and the clamping movemen-t of the carriage 20 may be correspondingly large or vice versa. In dependence on -the frictions involved in said clamping movements they may take place at the same time or in succession.
Figure 9 illustrates the supply of a pressure fluid through the mold-side coupling part 26 and connecting lines 33 to a hydraulic cylinder 30 for actuating a metal core 31 in the mold S. The hydraulic cylinder 30 comprises a cylinder body 30b and a piston rod 30a and has a horizontal axis extending in the parting plane t-t of the mold S. In the position shown in Figure 9 the core 31 has been pulled out of the molding 32.
In accordance with Figures 1 and 2 the - stationary coupling ~ comprises the machine-side coupling part 15 provided with ports 15e for connection to the supply lines for the temperature control and the mold side coupling part 14 provided with ports 14a connected to the mold S by supply lines for the temperature control. For closing and opening the stationary coupling ~, the machine-side coupling part 15 is vertically guided on guide pins 34, which are adapted to be supported on a bridge provided on the conditioning table by upper locking members 34a -2~'3' and on the mold-side coupling part 14 by lower locking members 34b, which extend into a guide groove 16 of the mold-side coupling part 14. The means for deflecting the force vector of the closing stroke of the hydraulic cylinder 15a for closing and opening the statio~ary coupling ~ are similar to the means for deflecting the force vector of the hydraulic cylinder 23 for closing and opening the movable coupling F.
It will be understood that the term "supply line" when used herein for lines for conducting a fluid : is applicable to lines for supplying such fluid to said mold and to lines or withdrawing such fluid from said : mold.
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auxiliary operations need not be connected to the mold when it is outside the clamping region. As has been discussed hereinbefore in the first paragraph of the description of the prior art it is necessary in the arrangement just discussed that certain auxiliar operations are performed also in connectlon with the temperature control of the injection mold while it is arranged on the conditioning table and such auxiliary functions may particularly include operations required for an automatic control of the temperature of the mold at a set point. But most or all of the power supply lines required for the performance of auxiliary operations in the mold will not be connected to the mold until it is disposed in the clamping region of the ~ 15 injection molding machine so that the coupling of - said power supply lines is effected at a different time and at a different location from the coupling of the fluid supply lines for the temperature control.
~uch a separation of the coupling means for the temperature control from the coupling means for most or all of the power supply lines required for ; performing the auxiliary operations affords the ad~antage that only fluid supply lines for the tem-perature control must extend ~rom the sources of supply associated ~ith the injection molding machine as far as to thé conditioning table but it ~ill be v sufficient for power suppl~ lines for the performance of auxiliary operations to extencL only along a short distance to the clamping region. For this reason it will also be possible to use smaller coupling means which are to be coupled when the mold is disposed on the conditioning table because such coupling means need not be connected to power supply lines required for the performance of auxiliary operations. ~he fact that said coupling means are smaller in size and used to connect a smaller number of supply lines will facilitate the transfer of the injection mold between the conditioni~g table and the clamping region. If the injection mold is supplied with power in accordance with the concept which has just been outlined, a given injection molding machine Nhich is delivered to the operator may be provided with coupling means for connecting a larger or sm~ller number of supply lines to the mold so that the operator may restrict his expenditure involved in the injection molding machine to the financial resources which are then at his disposal and to his current automation re~
quirements In case further requirements arise in the future, they can be met by a procuring of additional coupling means. Besides, the coupling me~ns can be accommodated within a relatively small space and it is sufficient to provide for each coupling a single ?i~3~ .
~1 actuating means for performing the coupling movement and the clamping'q~ movement. This is important, because the space about the mold in ~ q ~ many cases is required by auxiliary assemblies par example assemblies for taking off molded parts from the mold opened.
; Brief Description of the Drawin~
Figures 1 and 2 are, respectively, a rear elevation and a top plan view showing an injection mold and coupling assembly disposed in the clamping region of an injection molding machine.
Figures 3 and 4 are fragmentary views of portions of Figures 1 and 2, respectively and show the mold-side coupling parts and the associated machine-side coupling parts.
Figures 5 arLd 6 are fragmentary vertical sectional views showing the same portions as Figures 3 and 4, respectively, when the mold-side coupling parts and the associated machine-side coupling parts are uncoupled from each other.
Figure 6 is a view that is similar to Figure 5 and shows said coupling parts when they are couplecl to each other.
Figures 7 and 8 are sectional views taken on lines 7-7 and 8-8, respectively, of Figure 5.
Figure 9 is a top p:Lan view-showing an injection mold provided with core-pulling means and with its first and second mold-side coupling parts.
Detailed Description of the Preferred Embodiment An illustrative embodiment of the invention will now be described more in detail with reference to the drawing.
In accordance with Figures 1, 2, and 9, an injection mold S comprises a stationary mold section Sa and a movable mold section Sb, each of which is provided with a back plate 11 and by means of said back plate ~1 is adapted to be detachably fixed to an associated mold carrier 13 or 13' of the clamping unit of an injection molding machine. lhe terms "stationary" and "movable"
used in connection wlth the mold sec-tions Sa and Sb and the mold carriers 13 and 13' relate to the behavior of said mold sections and mold carriers during the molding operation performed while the mold S is in an operative position in the clamping region of the machine.,But the two mold sections Sa and Sb are jointly movable between said clamping region and a conditioning table outside the machineO
Coupling means are provided for connecting the mold S to supply lines for a fluid for effecting ~,C~' # Said behavior refers to the opening and closing the mold.
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a temperature control of the inold and to power supply lines for a supply of power for a performance of auxiliary operations in the mold S. Such auxiliary operations may comprise a hydraulic pulling of cores, an ejection of moldings by means of compressed air, l/ C~h control-V~ ~ j and 2 transmissi~ signals. The stationary mold section 5a is provided with a first mold-side coupling part 14, which is adapted to be coupled to a first machine-side coupling part 15 to constitute a stationary coupling T for supply lines for a fluid for a tempera-ture control of the injection mold. The movable mold section ~b is provided with a second mold-side coupllng part 26, 28a, which is adapted to be coupled to a second machine-side coupling part 27, 28b to constitute a movable coupling F for connecting power supply lines to the mold S. The first mold-side coupling part comprises a hydraulic upper coupling element 27 and an electrical lower coupling element 28b. ~wo hydraulic cylinders 23 are provided for actuating the movable coupling F and the stationary coupling T
by a closing stroke so that the machine-side coupl1ng parts 27, 28b; and 15 can be coupled to and uncoupled from the mold-side coupling parts 26, 28a; 14. ~he coupling ~ connected to the stationary mold section Sa connects the mold S to the supply lines for the temperature control o~ the mold S. The coupling F
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connected to the movable mold section Sb connects the mold S to most or all of the power supply lines required for auxiliary operations in the mold ~. In Figures 1 to 8 the injection mold S is shown in its operative position in the clamping region of the injection molding machine. The mold S has been transferred to said clamping region from a conditioning table.
For effecting a temperature control of the mold S, the stationary coupling T is in a closed state while the mold S is disposed on the conditioning table and remains in said closed state during the transfer of the mold S to the clamping region znd while the mold S
is operated in the clamping region to per~orm a molding operation.
The stationary coupling T which is associated with the stationary mold section Sa is opened and closed by a coupling movement in a direction which is parallel to the parting plane t-t of the injection ~old S. The movable coupling F which is associated with the movable mold section Sb is opened and closed by a coupling movement whiGh is at right angles to the parting plane t-t. As is particularly apparent from Figures 2 and 9 the back plates 11 protrude rearwardly from the body of the mold S. Each of the mold-side coupling parts 14 and 26 is provided adjacent to that portion of the associated back plate 11 which protrudes from " . , ~
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; the body of the mold. One mold-side coupling part 14 is secured to the top edge of the back plate 11 of the stationary mold section Sa. The other ~old-side coupling part 26 is secured to a mounting pla-te 18, which is secured to the movable mold carrier 13'. As is particularly apparent from Figure 2 the mounting plate 18 extends partly into a mating recess formed in the back plate 11. The direction of the stroke of each of the hydraulic cylinders 23 and 15a of the assembly is at right angles to the direction of the coupling and uncoupling movements of that machine-side coupling part which is actuated by said cylinder. The force vector of the closing stroke of each of said cylinders is deflected through 90 by suitable cam plates 25, which are formed with oblique cam slots 25a.
Each cam plate 25 is connected to the piston rod 23e of the hydraulic cylinder 23 by a pi~ot 23h. The force vector or the stroke of the cylinder 23 is deflected by the cooperation of the cam follower pins 22b and the oblique cam slots 25a of the cam plates 25. The cam follower pins 22b are mounted on a carriage 22, which carries the machine-side coupling parts 27, 28b.
The carriage 22 together with the associated machine-side coupling parts 27 or 28b and a carrier 19 carrying the hydraulic cylinder 23 constitutes a subassembly, which is mounted for a limited horizontal displacement 7.,J ~
in a vertical bearing plate 20, which is secured to the movable mold carrier 13' by means of screws 21 when the injection mold S is in operat;ive position in the clamping region of the machine.
Said unit is shown in Figures 1 to 5 before it is secured to the fitting plate 18 when the cou-pling F has not yet been closed.
As is particularly apparent from Figures 3 to 6, the carriage 22 comprises a vertical carrier plate 22a, which faces the mold S and to which the machine-side coupling parts 27, 28b are secured. ~he carriage 22 also comprises two horizontal legs 22c, which extend rearwardly from the carrier plate 22a.
The carriage 22 is horizontally slidably mounted on guide ribs 19c of a cylinder carrier 19, on which the hydraulic cylinder 23 is mounted. ~he hydraulic cylinder 23 comprises a cylinder block 23f, which is connected by screw fasteners 23g to mounting sockets 19d of the cylinder carrier 19 (Figure 3).
The piston 23d of the hydraulic cylinder 23 defines cylinder chambers 23bj which are connected to hydraulic ports 23c for supplying and withdrawing a hydraulic fluid to and from the chambers 23b. ~he rear cylinder ; chamber is closed by a cylinder cover 23a. Limit switches 24 serve to control the operation of the hydraulic cylinder 23. As is particularly apparent - 18 ~ 3 from ~igure 4 the elongate cylinder carrier 19 is provided with lateral projections 19b and by said projections 19b and associated screws 29 is supported on the bearing plate 20~ As will be explained herein-after the screws 29 serve as limiting means. The closingstroke of ~he hydraulic cylinder 23 disposed adjacent to the movable mold carrier 13' is converted into a coupling movement, by which the machine-side coupling part 27, 28b is moved into engagement with the mold-side coupling part 26, 28a, and into a clamping movement, by which the carrier 19, which carries the hydraulic cylinder 23, is forced against the movable mold section Sb. The coupling movement is limited in that a cam follower pin 22b of the carriage 22 engages one end of a limiting groove 20a formed in the bearlng plate 22. The cam follower pin 22b extends from the carriage 22 through the cam slot 25a of the adjacent cam plate 25 and into the limiting groove 20a. The clamping movement is limited by limiting recesses 20b (~igure 4) formed in the bearing plate 20. Screws 29 mounted in the carrier extend into the limiting recesses 20b with a lost motion, by which the clamping movement is determined.
During the last portion of the closing movement the coupling elements 27a, 28b' (~igure 3) of the machine-side coupling parts 27, 28b which are .: . , , - , :
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being actuated are coupled to the coupling elements 26a, 28a' (~igure 3, 5) of the mold-side eoupling parts 26, 28a.
During the closing stroke of the hydraulic cylinder 23 the carriage 22 carrying the coupling part 27, 28b and the carrier 19, which is provided with a locking nose 19a, are moved from the position shown in Figure 5 to the position shown in Figure 6 so that the carrier 19 performs the small lost motion to the right, whieh is permitted by the screws 29 in the limiting recess 20b, and the locking nose 19a is thus eaused to engage the forward faee of the mounting plate 18.#In dependenee on the len~th of the llmiting groove 20a (Figure 4) the carr age 22 moves to the left until the eam follower pin 22b engages the left-hand edge of the limiting groove 20a. ~he mutually opposite direetions of the movements of the earrier 19 ~nd the carriage 22 are due to the faet that a vertieal movement of the eam follower pin 22b in the eam slot 25a imparts to the earriage a horizontal movement to the left and imparts to the cylinder earrier 19 a horizontal movement to the right. Said horizontal movements eonstitute the coupling mo~ement and the clamping movement, respeetive-ly~
Because the hydraulic eylinder 23 ls fixedly mounted on the cylinder earrier 19 so that the latter # The vertical positioned mounting plate 18 fastened on the back plate is of a standardized size even if the actual molds are of diffe-rent size.
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_ 20 -constitutes an abutment for the cylinder 23, the closing stroke of the hydraulic cylinder 23 will impart the horizontal movement to the cylinder carrier 19 -to the extent determined by the lost motion of the screws 29 in the limiting recess0s 20b. For the protection of the electrical lower coupling elements 28a, 28b of the movable coupling ~ the machine-side coupling part 28b is buffered at its rear by coil springs.
In an injection mold and coupling assembly having such a design the subassembly which comprises the machine-side coupling part 27, 28b; the carriage 22 carrying said coupling part, the associated hydraulic cylinder 23 and the cylinder carrler 19 carr ing said bearing ~0 cylinder is supported by the ~e~r~ plate ~ on the ~ 5 movable mold carrier 13' for a limited sliding movement and when the coupling has been closed is firmly clamped against the back plate 11 of the movable mold section i a position in which the nose 19a of the cylinder carri-er 19 engages the back plate 11 on one side thereof and the carrier 22a included in the carriage 22 and carrying the coupling part 27, 28b engages the back plate 11 on the other side thereof. Ihis means that for said clamping and coupling movements the closing stroke of the hydraulic cylinder 23 must be converted to mutually opposite movements of the cylinder carrier 19 and of the carriage 22. In dependence on the initial - :
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position the clamping movemen-t o~ the cylinder carri-er 19 may be relatively small and the clamping movemen-t of the carriage 20 may be correspondingly large or vice versa. In dependence on -the frictions involved in said clamping movements they may take place at the same time or in succession.
Figure 9 illustrates the supply of a pressure fluid through the mold-side coupling part 26 and connecting lines 33 to a hydraulic cylinder 30 for actuating a metal core 31 in the mold S. The hydraulic cylinder 30 comprises a cylinder body 30b and a piston rod 30a and has a horizontal axis extending in the parting plane t-t of the mold S. In the position shown in Figure 9 the core 31 has been pulled out of the molding 32.
In accordance with Figures 1 and 2 the - stationary coupling ~ comprises the machine-side coupling part 15 provided with ports 15e for connection to the supply lines for the temperature control and the mold side coupling part 14 provided with ports 14a connected to the mold S by supply lines for the temperature control. For closing and opening the stationary coupling ~, the machine-side coupling part 15 is vertically guided on guide pins 34, which are adapted to be supported on a bridge provided on the conditioning table by upper locking members 34a -2~'3' and on the mold-side coupling part 14 by lower locking members 34b, which extend into a guide groove 16 of the mold-side coupling part 14. The means for deflecting the force vector of the closing stroke of the hydraulic cylinder 15a for closing and opening the statio~ary coupling ~ are similar to the means for deflecting the force vector of the hydraulic cylinder 23 for closing and opening the movable coupling F.
It will be understood that the term "supply line" when used herein for lines for conducting a fluid : is applicable to lines for supplying such fluid to said mold and to lines or withdrawing such fluid from said : mold.
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Claims (16)
1. In an injection mold and coupling assembly for use in an injection molding machine, which assembly comprises an injection mold comprising first and second mold sections, one of which is a stationary mold section and the other of which is a movable mold section and each of which is provided with a back plate and is adapted to receive and discharge a temperature control fluid and is provided with a back plate having a protruding portion, which laterally protrudes from the associated mold section;
a mold-side coupling part detachably secured to said first mold section and disposed adjacent to said protruding portion of the associated back plate and in fluid communication with said mold for a supply and discharge of said fluid to and from said mold;
a machine-side coupling part adapted to be connected to fluid supply lines for conducting said temperature control fluid and mounted to be movable in a first predetermined direction into coupling engagement with said mold-side coupling part to couple said fluid supply lines through said mold-side coupling part to said mold; and a hydraulic cylinder, which is operable to perform a closing stroke and by said closing stroke to move said machine-side coupling part by a coupling movement in said first direction into said coupling engagement with said mold-side coupling part;
the improvement residing in that said cylinder is carried by a cylinder carrier, which is mounted to be movable by a clamping movement in a second predetermined direction, which is opposite to said first direction, into engagement with said first mold section;
said cylinder is operatively connected to said machine-side coupling part and said cylinder carrier by motion-transmitting means, which are operable in response to said closing stroke of said cylinder to move said machine-side coupling part in said first direction into coupling engagement with said mold-side coupling part and to move said cylinder carrier into engagement with said first mold section;
and said mold-side coupling part is in fluid communication with both said mold sections for a supply and discharge of said fluid to and from both said mold sections.
a mold-side coupling part detachably secured to said first mold section and disposed adjacent to said protruding portion of the associated back plate and in fluid communication with said mold for a supply and discharge of said fluid to and from said mold;
a machine-side coupling part adapted to be connected to fluid supply lines for conducting said temperature control fluid and mounted to be movable in a first predetermined direction into coupling engagement with said mold-side coupling part to couple said fluid supply lines through said mold-side coupling part to said mold; and a hydraulic cylinder, which is operable to perform a closing stroke and by said closing stroke to move said machine-side coupling part by a coupling movement in said first direction into said coupling engagement with said mold-side coupling part;
the improvement residing in that said cylinder is carried by a cylinder carrier, which is mounted to be movable by a clamping movement in a second predetermined direction, which is opposite to said first direction, into engagement with said first mold section;
said cylinder is operatively connected to said machine-side coupling part and said cylinder carrier by motion-transmitting means, which are operable in response to said closing stroke of said cylinder to move said machine-side coupling part in said first direction into coupling engagement with said mold-side coupling part and to move said cylinder carrier into engagement with said first mold section;
and said mold-side coupling part is in fluid communication with both said mold sections for a supply and discharge of said fluid to and from both said mold sections.
2. The improvement set forth in claim 1, wherein said hydraulic cylinder is arranged to perform said closing stroke in a direction which is at right angles to said first and second directions and said motion-transmitting means comprise camming means for deflecting the force vector of said closing stroke into said first and second di-rections.
3. The improvement set forth in claim 2, wherein said camming means comprise a cam plate formed with a cam slot for deflecting said force vector.
4. In an injection mold and coupling assembly for use in an injection molding machine, which assembly comprises an injection mold comprising first and second mold sections, one of which is a stationary mold section and the other of which is a movable mold section and each of which is provided with a back plate and is adapted to receive and discharge a temperature control fluid and to be supplied with power for a performance of auxiliary operations in said mold and is provided with a back plate having a protruding portion, which laterally protrudes from the associated mold section;
a first mold-side coupling part detachably secured to said first mold section and disposed adjacent to said protruding portion of the associated back plate and in fluid communication with said mold for a supply and discharge of said fluid to and from said mold;
a first machine-side coupling part adapted to be connected to fluid supply lines for conducting said temperature control fluid and mounted to be movable for a coupling movement in a first predetermined direction into coupling engagement with said first mold-side coupling part to form therewith a first coupling for coupling said fluid supply lines through said first mold-side coupling part to said mold;
a first hydraulic cylinder, which is operable to perform a closing stroke and by said closing stroke to move said machine-side coupling part by a coupling movement in said first direction into said coupling engagement with said first mold-side coupling part;
a second mold-side coupling part detachably secured to said second mold section and disposed adjacent to said protruding portion of the associated back plate and connected to said mold for a supply of power to said mold;
a second machine-side coupling part adapted to be connected to power supply lines and mounted to be movable for a coupling movement in a third prede-termined direction into coupling engagement with said second mold-side coupling part to form therewith a second coupling for coupling said power supply lines through said second mold-side coupling part to said mold; and a second hydraulic cylinder, which is operable to perform a closing stroke and by said closing stroke to move said second machine-side coupling part in said third direction into said coupling engagement with said second mold-side coupling part;
the improvement residing in that said first cylinder is carried by a first cylinder carrier;
said cylinder is operatively connected to said machine-side coupling part and said cylinder carrier by motion-transmitting means, which are operable in response to said closing stroke of said cylinder to move said machine-side coupling part in said first direction into coupling engagement with said mold-side coupling part and to move said cylinder carrier into engagement with said first mold section;
and said first cylinder is operatively connected to said first machine-side coupling part and to said first cylinder carrier by first motion-transmitting means, which are operable in response to said closing stroke of said first cylinder to move said first machine-side coupling part in said first direction into coupling engagement with said first mold-side coupling part and to move said first cylinder carrier in said second direction into engagement with said first mold section;
said second cylinder is operatively connected to said second machine-side coupling part and to said second cylinder carrier by second motion-transmitting means, which are operable in response to said closing stroke of said second cylinder to move said second machine side coupling part in said third direction into coupling engagement with said second mold-side coupling part and to move said second cylinder carrier in said fourth direction into engagement with said second mold section;
said second cylinder is carried by a second cylinder carrier, which is mounted to be movable for a clamping movement in a fourth predetermined direction, which is opposite to said third direction, into engagement with said second mold section;
said first mold-side coupling part is in fluid communication with both said mold sections for a supply and discharge of said fluid to and from both said mold sections; and said second mold-side coupling part is connected to both said mold sections for a supply of power to both said mold sections.
a first mold-side coupling part detachably secured to said first mold section and disposed adjacent to said protruding portion of the associated back plate and in fluid communication with said mold for a supply and discharge of said fluid to and from said mold;
a first machine-side coupling part adapted to be connected to fluid supply lines for conducting said temperature control fluid and mounted to be movable for a coupling movement in a first predetermined direction into coupling engagement with said first mold-side coupling part to form therewith a first coupling for coupling said fluid supply lines through said first mold-side coupling part to said mold;
a first hydraulic cylinder, which is operable to perform a closing stroke and by said closing stroke to move said machine-side coupling part by a coupling movement in said first direction into said coupling engagement with said first mold-side coupling part;
a second mold-side coupling part detachably secured to said second mold section and disposed adjacent to said protruding portion of the associated back plate and connected to said mold for a supply of power to said mold;
a second machine-side coupling part adapted to be connected to power supply lines and mounted to be movable for a coupling movement in a third prede-termined direction into coupling engagement with said second mold-side coupling part to form therewith a second coupling for coupling said power supply lines through said second mold-side coupling part to said mold; and a second hydraulic cylinder, which is operable to perform a closing stroke and by said closing stroke to move said second machine-side coupling part in said third direction into said coupling engagement with said second mold-side coupling part;
the improvement residing in that said first cylinder is carried by a first cylinder carrier;
said cylinder is operatively connected to said machine-side coupling part and said cylinder carrier by motion-transmitting means, which are operable in response to said closing stroke of said cylinder to move said machine-side coupling part in said first direction into coupling engagement with said mold-side coupling part and to move said cylinder carrier into engagement with said first mold section;
and said first cylinder is operatively connected to said first machine-side coupling part and to said first cylinder carrier by first motion-transmitting means, which are operable in response to said closing stroke of said first cylinder to move said first machine-side coupling part in said first direction into coupling engagement with said first mold-side coupling part and to move said first cylinder carrier in said second direction into engagement with said first mold section;
said second cylinder is operatively connected to said second machine-side coupling part and to said second cylinder carrier by second motion-transmitting means, which are operable in response to said closing stroke of said second cylinder to move said second machine side coupling part in said third direction into coupling engagement with said second mold-side coupling part and to move said second cylinder carrier in said fourth direction into engagement with said second mold section;
said second cylinder is carried by a second cylinder carrier, which is mounted to be movable for a clamping movement in a fourth predetermined direction, which is opposite to said third direction, into engagement with said second mold section;
said first mold-side coupling part is in fluid communication with both said mold sections for a supply and discharge of said fluid to and from both said mold sections; and said second mold-side coupling part is connected to both said mold sections for a supply of power to both said mold sections.
5. The improvement set forth in claim 4 as applied to an injection mold and coupling assembly in which one of said mold-side coupling parts is electrically connected to said mold and that of said machine-side coupling parts which is associated with said one mold-side coupling part is adapted to be connected to electric supply lines and is arranged to electrically connect said electric supply lines by means of said one mold-side coupling part to said mold when said associated machine-side coupling part is in coupling engagement with said one mold-side coupling part, wherein said one mold-side coupling part is elec-trically connected to both said mold sections.
6. The improvement set forth in claim 4, wherein said mold comprises core-pulling means, which are operable by said power supplied by said power supply lines.
7. The improvement set forth in claim 4, wherein said power supply lines comprise lines for conducting compressed air for ejecting moldings from said mold.
8. The improvement set forth in claim 4, as applied to an injection mold and coupling assembly in which said first and second mold sections define a parting plane, wherein one of said couplings is a stationary coupling comprising the mold-side coupling part secured to said stationary mold section;
the other of said couplings is a movable coupling comprising the mold-side coupling part which is secured to said movable mold section;
said machine-side coupling part of said stationary coupling is mounted to be movable for a coupling movement into coupling engagement with the associated mold-side coupling part in a direction which is parallel to said parting plane; and said machine-side coupling part of said movable coupling is mounted to be movable for a coupling movement into coupling engagement with the associated mold-side coupling part in a direction which is at right angles to said parting line.
the other of said couplings is a movable coupling comprising the mold-side coupling part which is secured to said movable mold section;
said machine-side coupling part of said stationary coupling is mounted to be movable for a coupling movement into coupling engagement with the associated mold-side coupling part in a direction which is parallel to said parting plane; and said machine-side coupling part of said movable coupling is mounted to be movable for a coupling movement into coupling engagement with the associated mold-side coupling part in a direction which is at right angles to said parting line.
9. The improvement set forth in claim 4, wherein said back plate provided on said stationary mold section has a top edge;
a fitting plate is secured to said back plate provided on said movable mold section;
one of said mold-side coupling parts is secured to said back plate provided on said stationary mold section at said top edge; and the other of said mold-side coupling parts is secured to said fitting plate.
a fitting plate is secured to said back plate provided on said movable mold section;
one of said mold-side coupling parts is secured to said back plate provided on said stationary mold section at said top edge; and the other of said mold-side coupling parts is secured to said fitting plate.
10. The improvement set forth in claim 4, wherein said first hydraulic cylinder is arranged to perform its closing stroke in a direction which is at right angles to said first and second directions;
said second cylinder is arranged to perform its closing stroke in a direction which is at right angles to said third and fourth directions;
said first motion-transmitting means comprise first camming means for deflecting the force vector of said closing stroke of said first cylinder into said first and second directions; and said second motion-transmitting means comprise camming means for deflecting the force vector of said closing stroke of said second cylinder into said third and fourth directions.
said second cylinder is arranged to perform its closing stroke in a direction which is at right angles to said third and fourth directions;
said first motion-transmitting means comprise first camming means for deflecting the force vector of said closing stroke of said first cylinder into said first and second directions; and said second motion-transmitting means comprise camming means for deflecting the force vector of said closing stroke of said second cylinder into said third and fourth directions.
11. The improvement set forth in claim 10, wherein each of said camming means comprise a cam plate formed with a cam slot for deflecting said force vector.
12. The improvement set forth in claim 11, wherein one of said couplings is a stationary coupling comprising the mold-side coupling part secured to said stationary mold section;
the other of said couplings is a movable coupling comprising the mold-side coupling part which is secured to said movable mold section;
said assembly comprises first and second mold carriers detachably connected to said stationary and movable mold sections, respectively, that of said cylinders which is operatively connected to said machine-side coupling part of said movable coupling comprises a cylinder body mounted on said second mold carrier;
the machine-side coupling part of said movable coupling is carried by a carriage, which is provided with cam follower pins;
said motion-transmitting means for transmit-ting motion to said mold-side coupling part of said movable coupling from the associated one of said cylinders comprise a cam plate, which is arranged to cooperate with said cam follower pins to deflect the force vector of the closing stroke of said as-sociated cylinder into the direction of said coupling movement of said machine-side coupling part of said movable coupling.
the other of said couplings is a movable coupling comprising the mold-side coupling part which is secured to said movable mold section;
said assembly comprises first and second mold carriers detachably connected to said stationary and movable mold sections, respectively, that of said cylinders which is operatively connected to said machine-side coupling part of said movable coupling comprises a cylinder body mounted on said second mold carrier;
the machine-side coupling part of said movable coupling is carried by a carriage, which is provided with cam follower pins;
said motion-transmitting means for transmit-ting motion to said mold-side coupling part of said movable coupling from the associated one of said cylinders comprise a cam plate, which is arranged to cooperate with said cam follower pins to deflect the force vector of the closing stroke of said as-sociated cylinder into the direction of said coupling movement of said machine-side coupling part of said movable coupling.
13 . The improvement set forth in claim 12 , wherein said movable mold section is provided with a mounting plate, one of said cylinder carriers is associated with said movable coupling and is provided with a locking nose, which is arranged to engage said mounting plate when said movable mold carrier is engaged by said one cylinder carrier; and said carriage is slidably mounted on said one cylinder carrier.
14. The improvement set forth in claim 13, wherein a bearing plate is secured to said second mold carrier and is formed with a limiting groove and is so arranged relative to said cam slot of the associated one of said camming means that said cam follower pin of said carriage extends through said cam slot into said limiting groove and is arranged to cooperate with said bearing plate to limit said coupling movement of the machine-side coupling part of said movable coupling;
said carriage carries a limiting projection;
and said bearing plate is formed with a limiting recess and is arranged to receive said limiting projection of said carriage with a lost motion, which defines said clamping movement.
said carriage carries a limiting projection;
and said bearing plate is formed with a limiting recess and is arranged to receive said limiting projection of said carriage with a lost motion, which defines said clamping movement.
15. The improvement set forth in claim 12, wherein said assembly comprises first and second mold carriers detachably connected to said stationary and movable mold sections, respectively, said mold-side coupling part of said movable coupling comprises a hydraulic coupling element in fluid communication with both said mold sections and an electric coupling element, which is electrically connected to both said mold sections;
said machine-side coupling part of said movable coupling is adapted to be connected to fluid supply lines and to electric supply lines and when in coupling engagement with said mold-side coupling part of said movable coupling is arranged to connect said fluid supply lines and said electric supply lines to both said mold sections by said hydraulic coupling element and said electric coupling element, respective-ly, said carriage and that of said cylinder carriers which is associated with said movable coupling constitute a subassembly;
a vertical bearing plate is screw-connected to said second mold carrier; and said subassembly is mounted in said bearing plate for a limited horizontal displacement relative thereto.
said machine-side coupling part of said movable coupling is adapted to be connected to fluid supply lines and to electric supply lines and when in coupling engagement with said mold-side coupling part of said movable coupling is arranged to connect said fluid supply lines and said electric supply lines to both said mold sections by said hydraulic coupling element and said electric coupling element, respective-ly, said carriage and that of said cylinder carriers which is associated with said movable coupling constitute a subassembly;
a vertical bearing plate is screw-connected to said second mold carrier; and said subassembly is mounted in said bearing plate for a limited horizontal displacement relative thereto.
16. The improvement set forth in claim 4 as applied to an injection mold and coupling assembly for use in an injection molding machine with which a conditioning table disposed outside said machine is associated, wherein one of said couplings is a stationary coupling comprising the mold-side coupling part secured to said stationary mold section;
the other of said couplings is a movable coupling comprising the mold-side coupling part which is secured to said movable mold section; and said machine-side coupling part of said stationary coupling is adapted to be guided during its coupling movement by guide pins supported on said conditioning table.
the other of said couplings is a movable coupling comprising the mold-side coupling part which is secured to said movable mold section; and said machine-side coupling part of said stationary coupling is adapted to be guided during its coupling movement by guide pins supported on said conditioning table.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4029431A DE4029431A1 (en) | 1990-09-17 | 1990-09-17 | CLUTCH DEVICE ON THE INJECTION MOLD OF A PLASTIC INJECTION MOLDING MACHINE |
| DEP4029431.5 | 1990-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2051309A1 true CA2051309A1 (en) | 1992-03-18 |
Family
ID=6414403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002051309A Abandoned CA2051309A1 (en) | 1990-09-17 | 1991-09-13 | Injection mold and coupling assembly for use in an injection molding machine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5234337A (en) |
| EP (1) | EP0476236B1 (en) |
| JP (1) | JP2572689B2 (en) |
| AT (1) | ATE118720T1 (en) |
| CA (1) | CA2051309A1 (en) |
| DE (2) | DE4029431A1 (en) |
| ES (1) | ES2069776T3 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1240949B (en) * | 1990-06-12 | 1993-12-27 | Bazzica Engineering Di Carlo Bazzica & C. S.A.S. | METHOD AND MACHINE FOR THE PRODUCTION OF EXPANDED POLYSTYRENE PIECES. |
| US20040169320A1 (en) * | 2003-02-28 | 2004-09-02 | Petrucci Alan A. | Plastic injection mold assembly and method of molding threaded plastic parts |
| US7828541B2 (en) * | 2007-05-22 | 2010-11-09 | Coeur, Inc. | Motor driven mold |
| AT511644A1 (en) * | 2011-07-11 | 2013-01-15 | Ifw Manfred Otte Gmbh | FORM TOOL WITH ADJUSTABLE FORM core |
| FR2990640B1 (en) * | 2012-05-21 | 2014-06-13 | Sidel Participations | "DEVICE FOR MANUFACTURING CONTAINERS COMPRISING A MOLD AND A FLUID CONNECTION PLUG PROVIDED WITH MECHANISMS FOR TIGHTENING THE MOLD" |
| US9339957B2 (en) * | 2014-05-07 | 2016-05-17 | Athena Automation Ltd. | Stack mold support structure for an injection molding machine |
| DE102016205554B4 (en) * | 2016-04-04 | 2022-02-24 | Rekers Gmbh Maschinen- Und Anlagenbau | Mandrel device for a block molding machine, block molding machine and method for producing shaped blocks |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1147750B (en) * | 1959-06-06 | 1963-04-25 | Krauss Maffei Ag | Mold closing device, especially for injection molding machines that process thermoplastics |
| FR1516120A (en) * | 1967-01-24 | 1968-03-08 | Die-casting machine mold closing device | |
| US4158910A (en) * | 1977-06-16 | 1979-06-26 | Honeywell Inc. | Injection molding method and apparatus for accommodating various sizes of molding die inserts |
| JPS63416Y2 (en) * | 1980-03-27 | 1988-01-07 | ||
| JPS643569Y2 (en) * | 1980-08-28 | 1989-01-31 | ||
| US4487287A (en) * | 1981-08-03 | 1984-12-11 | Mazda Motor Corporation | Support system for automobile power plant |
| DE3222828C2 (en) * | 1982-06-18 | 1984-04-12 | Karl 7298 Loßburg Hehl | Mold closing unit with waiting stations for heating injection molds and with a mold changing device |
| DE3509518C1 (en) * | 1985-03-16 | 1986-09-18 | Karl 7298 Loßburg Hehl | Mold closing unit with a mold changing device and an adaptation table for preheating plastic injection molds |
| DD259957A3 (en) * | 1986-06-30 | 1988-09-14 | Schwerin Plastmaschinen | DEVICE FOR VERTICALLY CHANGING AND TENANTS OF MOLDING TOOLS |
| JPS63222831A (en) * | 1987-03-13 | 1988-09-16 | Fanuc Ltd | Motor driven mold clamping mechanism |
-
1990
- 1990-09-17 DE DE4029431A patent/DE4029431A1/en active Granted
-
1991
- 1991-06-19 ES ES91110005T patent/ES2069776T3/en not_active Expired - Lifetime
- 1991-06-19 DE DE59104672T patent/DE59104672D1/en not_active Expired - Fee Related
- 1991-06-19 AT AT91110005T patent/ATE118720T1/en not_active IP Right Cessation
- 1991-06-19 EP EP91110005A patent/EP0476236B1/en not_active Expired - Lifetime
- 1991-09-13 US US07/759,160 patent/US5234337A/en not_active Expired - Fee Related
- 1991-09-13 CA CA002051309A patent/CA2051309A1/en not_active Abandoned
- 1991-09-17 JP JP3265362A patent/JP2572689B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2572689B2 (en) | 1997-01-16 |
| ATE118720T1 (en) | 1995-03-15 |
| EP0476236A1 (en) | 1992-03-25 |
| DE4029431C2 (en) | 1993-01-14 |
| JPH04364915A (en) | 1992-12-17 |
| DE59104672D1 (en) | 1995-03-30 |
| EP0476236B1 (en) | 1995-02-22 |
| ES2069776T3 (en) | 1995-05-16 |
| US5234337A (en) | 1993-08-10 |
| DE4029431A1 (en) | 1992-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |