DE1280713B - Device for folding a cover sheet around an insert - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B43m

German class: 7Od-12/01

Number: 1280 713

File number: P 12 80 713.5-27 (S 97131)

Filing date: May 17, 1965

Opening day: October 17, 1968

The invention relates to a device for folding a cover sheet around an insert, consisting of three rollers arranged in parallel in such a way that two pairs of rollers roll off one another are formed, of which the first the cover sheet in a folding pocket of the device inserted up to an adjustable stop and of those in the second, in the reverse of the sheet feed direction, the transverse fold is formed for the fold portion.

A known device of this type is the insert, for example one that is still to be folded Newspaper, which is arranged parallel to the cover sheet later wrapping the insert, of the The first pair of rollers is fed into the pocket as far as it will go. As a result of the still circulating and thus the first pair of rollers conveying takes place behind the pair of rollers, but in front of the folding pocket, the formation of the transverse fold which extends across the cover sheet and over the insert. Nach- ao which grips the cover sheet including the insert from the second pair of rollers at the transverse fold the cover sheet and insert are led to another folding pocket up to a stop, then finally by means of a third pair of rollers, which is created by applying a fourth roller is formed on one of the rollers of the first pair of rollers, the end portion of the cover sheet is folded and, completely enveloping the insert, to lie on the initial section of the cover sheet comes.

It is also known to use such a device only for folding a letter twice use, which is then connected to the longitudinal edges by further interlocking with their peripheral surfaces Profile rollers is closed automatically.

In addition to these devices for folding a sheet, possibly around an insert, are still Known so-called sword folding machines with which the first folding of the cover sheet with the parallel insert lying on it takes place by means of a folding knife, which the sheets to be folded pulls through a gap that directs the leaves against one another.

The known devices for folding a cover sheet around an insert have the disadvantage on that it is not possible with them deposits separately from the cover sheet of the respective rollers to feed. For example, it is not possible to use solid cardboard cards that cannot be folded To feed a folding device for wrapping the card with an envelope sheet.

Device for folding a cover sheet
a deposit

Applicant:

Roneo-Neopost Limited,
Croydon, Surrey (UK)

Representative:

Dipl.-Ing. H. Wiemuth, patent attorney,

4000 Düsseldorf-Oberkassel, Dominikanerstr. 37

Named as inventor:

Herbert Philip Sherman, Chicago, JIl. ■ (V. St. A.)

Claimed priority:

V. St. v. America May 18, 1964 (368 036)

The invention is based on the object of a device for folding a cover sheet to create an insert of the aforementioned type with which cards, return envelopes, Advertisements, letters or the like can be fed and encased in a form-fitting manner by the cover sheet. The device should be constructed as simply as possible and be reliable in its function.

The device according to the invention is characterized by another, the insert of the device supplying, parallel to the rollers arranged pair of rollers, which are arranged in such a way to these is that the insert with its front edge only together with the cover sheet to be folded is detected by the second pair of rollers. This way, any deposits can be made, if necessary, too Cardboard or the like, can be fed to the folding device without disturbing the wrapping process are to be feared.

Thus on the one hand the insert only when the cover sheet of the folding device is retracted into the folding pocket is fed and on the other hand the folding process not before the advancement of the insert can take place in the device, according to the invention the adjustable stop of the second Pair of rollers upstream folding pocket switching and control means assigned to the cover sheet feed interrupt when the front front edge

809 627/1044

of the cover sheet has reached the stop, the pair of rollers for feeding the Insert into the device switching and control means can be connected downstream, which when the insert on the cover sheet is brought in, the second pair of rollers for cross-folding the cover sheet start up again while taking along the insert. This ensures that the deposit roughly at the point of the cover sheet with her

known design lifts a single sheet 5 "from the top of the sheet supply and moves it forward until it of the rollers and arranged on the shaft 23

3 to 7 in a reduced representation schematically and in the side view the successive processes of folding, inserting and wrapping when operating the device,

F i g. 8 shows a perspective view of part of the device according to FIG. 1,

9 shows, in perspective representation, certain construction details of the device and Fig. 10 schematically and in side view

Front edge comes to rest on which the fold io one of the drives of the device,
is to be formed by the second pair of rollers. The device according to the invention is a com-

To the individual movement processes of the roller combination of a modified, essentially herpaare and the envelope-conventional folding machine supplied by these for folding paper, sheet and the insert and the actuated by these, which works with folding grooves, and a new microswitch in the correct order and to be able to control 15 device for inserting and / or enveloping a coordinated, can after insert. In order to avoid unnecessary verbosity of the invention that the first description is to be avoided, only those Ab-roller pairs are shown and driven by a motor via a coupling sections of the paper folding device, which is described by a first electric, which is complete Understanding of the magnet as a function of which the stop 20 subject of the invention are necessary,
the folding pocket associated microswitch on and The paper folding device shown in Fig. 1

can be disengaged, and that the drive of the roller has the support plate 21, on which there is a pair of sheets of paper S to be folded for the supply of the insert. The second motor takes place via a second clutch; in this case, sheets are to be folded to the dependence on the stop of the folding pocket, shown in Fig. 2 by a second electromagnet in Fig. 25, known as standard letter folding. The feed device 22 associated with the second microswitch can be engaged and disengaged, with both microswitches at the same time,
but are to be operated in opposite directions, and that in the

Movement path of the insert a contact sensor 30 of the roller 24 is detected, which the sheet is provided in the first arrangement, which guide into the first folding channel 26 until it hits against the adjustable stop 27 α on which the two microswitches 27 and 28 are attached are. The position of the sheet S ' during this operation is indicated in Fig. 1 by dashed lines and dotted lines.

The roller 24 is driven by the motor M ' via the belt drive, designated as a whole by 29, into which the spring clutch 31 is inserted. The outer sleeve 31 α of the coupling 31,

To avoid leading rollers, 40, which sits on the motor shaft 32, is provided with a number that the first roller pair consists of a driven teeth or circumferentially distributed stops cylindrical roller and a shaft on which one end of the Lever 135 engages to form roller sections rigidly connected to the shaft, the other end of which is arranged on the armature 33 of the and further roller sections are fastened with electromagnets 34. If, as it is described after ringer diameter as the first above spring 45 standing, the electromagnet 34 is not clutches connected to the shaft that is energized, it prevents a movement of the roller sections of the insert feeding sleeve 31 and causes a disengagement ; as a result, the pair of rollers are in contact. becomes a rotation of the on the shaft of the motor M '

In a further refinement, after the belt pulley is arranged, it can be prevented and thus Finding the pair of rollers for feeding the insert 50 the drive connection for rotating the roller 24 interrupted by a shaft provided with a casing. The electromagnet 34 is in the current and a spring clutch driven circuit of the normally closed microwave exist on the individual roller sections switch 27, which is through the front edge of the with a larger and a smaller through-the first folding groove 26 fed paper sheet S " Knives are arranged, of which the roller 55 is operated and opened.

Sections with the larger diameter with which the electromagnet 34 is thus by the

With a smaller diameter on the shaft via sheet 5 "is made currentless and the armature 33 by spring clutches attached roller sections in the spring 35 b are out of the electromagnet 34. pulled, whereby the free end of the lever 135

An exemplary embodiment of the invention is based on 60 with the teeth of the sleeve 31 α of the coupling 31 the following description interlocks so that the clutch does not work

Electromagnet and thus acts on the first clutch and switches on the drive for the cover sheet, to forward this to make the fold.

According to the invention, in an embodiment of the device, the insert can exactly match the cover sheet to be able to feed in the folding device and to avoid a slip between the insert and the

hang out with the drawing. It shows

F i g. 1 shows schematically and partially in section the interaction of the most important parts of a device according to the invention,

F i g. 2 is a perspective view of a folded sheet that encloses a card inserted therein,

and prevents the drive transmission from the motor M ' to the roller 24. This brings about the stopping of the debris in the channel 26 in front of the stop 27α. 65 Together with the microswitch 27, the microswitch 28 is also actuated. The microswitch 28, which is normally open, is in the circuit with the electromagnet 34 a; this is normal-

5 6

wise de-energized (Fig. 8). In this operating position, the sections 47 are opposite and the spring acting on the armature 33 α holds the one larger diameter than the outer anchors in engagement with the teeth of the coupling sections 49, so that the sections 51 and 47 insert a sleeve 35 α of the spring coupling 35 whereby these touch each other. The frame of the device in which is effective. When the microswitch 28 is closed 5 the shafts 37 and 38 and the feeder, the electromagnet 34 receives α current, which 22 α are stored, is under the force of springs, armature 33 α moves inward and thereby gives between the Roller sections 47 and 51 the coupling sleeve 35 α free; the clutch will have a certain system pressure. The drive effect and transmits the drive from the motor M "of the shaft 37 via the chain drive 52, woauf the feeding device 22 α on the chain io at the sprockets at the ends of the shaft 53 of the drive 29 a. Feeder 22 α and the shaft 37 arranged

The feed device 22 α is the platen and the connection of the shaft 37 with the

36 (FIG. 1), which are located above the first chain drive 52 via the spring clutch 55

Folding channel 26 is located and the inclusion of a is made. As can be seen, the shaft 37 runs

Supply of cards, letters, envelopes C od. Like. 15 together with the feed device 22 α to, if

serves, each inserted into the sheet S ' in question, which is driven by the motor M " . The

should be. This is described below. The roller on the shaft 38 is in

first folding channel 26 is connected to the shaft 37 with a pair of longitudinally directed

Slits 40 are provided, above which the micro-ordered rollers are pressed,

switches 27 and 28 are arranged. Each micro 20 If, as shown in FIG. 3, the rollers on the shaft23

switch is provided with a finger 40 α , which rotates in and the roller 24 in the direction of the arrow

engages the relevant slot and is thus set in, the sheet S "is moved forward. The

the movement path of a sheet 5 'is located and forward movement of the sheet S' stops when the

is touched and actuated by this (Fig. 9). Front front edge of the same against the stop

The microswitches are preferably at the cross-35 27 "butts and by actuation of the microswitch

directed support element 40 b is arranged, on which 27 the electromagnet 34 is de-energized. The next

chem also the downward movement of the sheet 5 'into the slits after it has been fully

40 cross stops 27 α are attached and was constantly stopped, caused when the

which is adjusted in the longitudinal direction of the channel 26 and card C "(Fig. 2) touches the sensor 39 (Fig. 8),

can be set in the set position. 30 of the one connected to the microswitch 42

The feed device 22 α is used to each rod 41 is attached. Closing this

a single card from the top of the card switch will re-energize the electrical

to lift off the stack C and place it between one of the magnets 34; the clutch 31 comes into engagement

Shaft 38 arranged solid rubber roller and on and transmits the driving force from the motor M '

of the shaft 37 arranged rollers 51, 35 the rollers on the shaft 23 and the roller 24.

which the card C in the direction of the sheet S ' for by the renewed forward movement of the sheet &

Hang up on the same move forward. In this case, this is prompted to withdraw in a known manner.

Movement pushes the leading edge of the card C ″ to bend and down between the rollers 24

against entering into the path of movement of the card and 54 where it is folded and then into the

arranged sensor wire 39 and adjusted the same. 40 second fold channel 56 (F i g. 1 and 4) is introduced

The sensor wire is rigidly attached to the cross rod 41. When the sheet starts to bend 5 'and in

(Fig. 8) attached to that in the circuit of the aforementioned manner of rollers 24 and 54

Electromagnet 34 lying microswitch 42 is detected, the front edge of the sheet loses its

is bound. System on microswitch 28; as a result of it becomes

The microswitch 42 is closed here, 45 the circuit to the electromagnet 34 α under-

and the solenoid 34 receives power; thereby broke, the clutch 35 is released and the

in turn, the clutch 31 is effective and shut down via chain drive 29 α. The spring clutch 55

carries the drive from the motor M ' to the roller 24 in the chain wheel arranged on the shaft 37

which also drives the shaft 23, so that both in the however, that the roller sections 49 and

in Fig. 3 by arrows indicated direction skids. 50 51 of this shaft by the

According to FIG. 8, the roller24 is arranged to be freely driven rollers47, and

to a rubber roller od

is the same over the entire length. The shaft 23 has motor M " driven chain drive 52. On this

a number of individual roller sections. The way becomes the card C ″ from the one on the shafts 37

End sections 44 and the intermediate sections 46 55 and 38 arranged rollers in the bent

are mounted on the shaft 23 and have all advanced the portion of the sheet S 'into it, and

same diameter. The section 46 is admittedly immediately before the folded sheet of

central groove provided to the space for the rollers 24 and 54 is detected. The in the

Create feeler wire 39. The sections 47, the folded sections of the sheet 5 "inserted card C"

between the sections 44 and 46 is placed 60 along with the sheet between the rollers

are, are via the spring clutches 48 with the 24 and 54 through down into the second FaIt-

Shaft 23 connected. The sections 47 have some channel 56 led into it.

smaller diameter than the sections 44, the second folding channel 56 is adjustable with the

46 and allow an interaction with the stop 58 (Fig. 5) provided against which the FaIt-

Rollers 51. 65 edge 59 of the sheet S ' abuts and the sheet

The shaft 37 also has a number of holding sections. The further movement of the sheet through the

49 and 51, which are mounted on the shaft and rollers 24 and 54 causes the kinking of the

circulate with this. The inner sections 51 of the sheet around a transverse line leading from the first faIt-

line has a certain distance. As can be seen from Fig. 5, the folding of the sheet takes place in a direction in which it is caught by rollers 54 and 61 which fold the sheet in such a way that, as Fig. 6 shows, the card C is complete enveloped. The folded sheet and the card wrapped in it or inserted into it finally, as shown in FIG. 7, ejected from rollers 54 and 61.

Of course, the hands and cards become sequential in the manner previously described Folded or inserted piece by piece, so that the device as long as for a supply of sheets and cards is taken care of, works continuously and automatically.

Claims (5)

Patent claims: 1. A device for folding a cover sheet around an insert, consisting of three rollers arranged in parallel in such a way that two pairs of rollers rolling on each other are formed, of which the first the cover sheet is inserted into a folding pocket of the device up to an adjustable stop and of which in the second, in the reversal of the sheet conveying direction, the transverse fold is formed for the folding section, characterized in that another pair of rollers (49, 49, 51; 38) is arranged in relation to these in such a way that the front edge of the insert (C) together with the cover sheet (S ') to be folded is only gripped by the second pair of rollers (24; 54). 2. Apparatus according to claim 1, characterized in that the adjustable stop (27 ä) of the second pair of rollers (24; 54) upstream folding pocket (26) are assigned switching and control means which interrupt the cover sheet feed when the front edge of the cover sheet (S ') has reached the stop (27 <z), and that the pair of rollers (49, 51; 38) for feeding the insert (C) into the device are followed by switching and control means which, when the insert (C) is brought up to the cover sheet (S ') , let the second pair of rollers (24; 54) start up again for the transverse folding of the cover sheet (S ") while at the same time taking along the insert (C"). 3. Apparatus according to claim 1 or 2, characterized in that the first pair of rollers (44,47,46; 24) can be driven by a motor (M ') via a clutch (31) which by a first electromagnet (34) in Depending on the microswitch (27) assigned to the stop (27 a) of the folding pocket (26) can be engaged and disengaged, and that the drive of the pair of rollers (37,49,51; 38) for the supply of the insert (C) by a The second motor (M ") takes place via a second clutch (35) which can be engaged and disengaged by a second electromagnet (34 a) depending on the second microswitch (28) assigned to the stop (27 a) of the folding pocket (26) , both microswitches (27,28) are to be operated simultaneously, but in opposite directions, and that a contact sensor arrangement (39,41,42) is provided in the path of movement of the insert (C), which on the first electromagnet (34) and thus on the first clutch (31) acts and the drive for the cover sheet (5 ') turns on to this forward to make the folding. 4. Device according to one or more of the preceding claims, characterized in that that the first pair of rollers (44, 47, 46; 24) consists of a driven, cylindrical roller (24) and a shaft (23), on which the shaft (23) is rigidly connected to the roller sections (44,46) are arranged and further roller sections (47) with a smaller diameter than the former are connected to the shaft (23) via spring clutches (48), which are connected to the roller section ^ (51) of the roller pair (49, 51; 38) feeding the insert (C) are in contact. 5. Device according to one or more of the preceding claims, characterized in that that the pair of rollers (49,51; 38) for feeding the insert (C) from one with a casing provided shaft (38) and a shaft (37) driven by a spring clutch (55) consists on the individual roller section © (49,51) with a larger and a smaller diameter are arranged, of which the roller sections (51) with the larger diameter with those with a smaller diameter on the shaft (23) via spring couplings (48) Roller sections (47) are in contact. Considered publications:
German Patent Nos. 237483, 613720;
French patent specification No. 1007155. 1 sheet of drawings 809 627/1044 10.68 © Bundesdruckerei Berlin