|Publication number||US3598050 A|
|Publication date||Aug 10, 1971|
|Filing date||Jul 18, 1968|
|Priority date||Jul 18, 1968|
|Publication number||US 3598050 A, US 3598050A, US-A-3598050, US3598050 A, US3598050A|
|Inventors||Thompson John R|
|Original Assignee||Int Machine Prod Inc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (19), Classifications (12)|
|External Links: USPTO, USPTO Assignment, Espacenet|
e Unlted States atent inventor John R. Thompson Cincinnati, Ohio App]. No. 745,823
Filed July 18, 1968 Patented Aug. 10, 1971 Assignee International Machine Products, Inc.
Cincinnati, Ohio MOUNTING MEANS FOR A PRINTING ROLL AND ASSOCIATED DRIVING APPARATUS 7 Claims, 5 Drawing Figs.
US. Cl 101/216, 101/375 Int. Cl 1341f 13/10, B41f5/O0 Field of Search 101/375,
 References Cited UNITED STATES PATENTS 2,245,618 6/1941 Stafford et a1. 101/216 2,503,858 4/1950 Waterworth 270/68 2,925,037 2/1960 Fischer 101/216 3,151,551 10/1964 Dutro etal 101/216 Primary Examiner-William B. Penn Assistant Examiner-E. M. Coven Anomey- Kinney and Schenk ABSTRACT: In printing apparatus a plate roll means employing a standard shaft means including interconnecting means enabling use of standard shaft means interchangeably and having standard gear means including interconnecting means to said standard shaft means to be used to drive said plate r011 means.
PATENTEUAUBIOIQY: 3 59 050 sun-J 1 OF 3 JOHN R. THOMPSON 3 v w BY g A TORNEYS PATENT-Eflmmoaen y 3,598,050
sum 2 OF 3 INVENTOR.
JOHN R. THOMPSON BY f i ATTORNEYS PATENTEU AUG 1 01971 JOHN R. THOMPSON MOUNTING MEANS FOR APRINTING ROLL AND ASSOCIATED DRIVING APPARATUS This invention pertains to printing apparatus and more particularly to an improved device for driving plate roll means comprising such printing apparatus.
Present printing apparatus generally utilize rotatable plate rolls which are pressed or fixed on an associated rotatable drive shaft. In addition each of such present plate rolls is also generally driven by a drive gear, or the like, which is also fixed to such drive shaft by soldering, or the like. Therefore, it has been necessary to purchase an additional shaft and gear with each of such present plate rolls. Inasmuch as plate rolls are periodically changed because of different printing requirements and due to wear of such plate rolls the result has been increased cost of operation.
Accordingly, it is a feature of this invention to provide an improved device for driving plate roll means which is of simple and economical construction and which provides optimum operating economy.
Another feature of this invention is to provide an improved apparatus for readily interconnecting such rotatable plate roll means to drive means of a printing apparatus in a simple and efficient manner.
Another feature of this invention is to provide an improved printing apparatus employing standard shaft means and adapted to be used with plate roll means having axial opening means therein corresponding to such shaft means and including interconnecting means enabling various plate roll means to be driven.
Another feature of this invention is to provide an improved printing apparatus having drive means such as standard gear means, or the like, which may be used to drive plate roll means interchangeably.
Another feature of this invention is to provide an improved printing apparatus of the character mentioned having unique coupling means for coupling and uncoupling standard size gear means to such standard shaft means in a simple and efficient manner.
Therefore, it is an object of this invention to provide an improved apparatus having one or more of the novel features of this invention as set forth above or hereinafter shown or described.
Other objects, uses, and advantages of this invention are apparent from a reading of this description which proceeds with reference to the accompanying drawings forming a part thereof and wherein:
FIG. 1 is an exploded perspective view of the improved apparatus ofthis invention.
FIG. 2 is a fragmentary view in elevation illustrating a por' tion ofa printing machine utilizing the improved apparatus of this invention and particularly illustrating the arrangement of an exemplary improved plate roll means and an associated backup roll.
FIG. 3 is a sectional view on the line 3-3 of FIG. 2 with parts in section and parts broken away particularly illustrating mechanical drive means provided on the printing machine of this example and the improved apparatus for interconnecting such mechanical drive means to drive such improved plate roll means.
FIG. 4 is a sectional view on the line 4-4 of FIG. 3.
FIG. Sis a sectional view on the line 5-5 of FIG. 3.
While the various features of this invention are hereinafter illustrated and described as being particularly adaptable for providing an improved drive means for supporting an i rotating plate roll means of a printing apparatus, or the IIkl it is to be understood that the various features of this invention can be utilized singly or in any combination thereof to prt vide an improved mechanical drive means for other uses as des red.
Therefore, this invention is not to be limited to only he embodiments illustrated in the drawings because the draw ngs are merely utilized to illustrate one of the wide variety of uses of this invention.
In the exemplary embodiment of this invention as particularly illustrated in FIGS. 2 and 3 of the drawings, a fragmentary portion of a printing apparatus or machine designated generally by the numeral 20 is illustrated. Printing machine 20 comprises printing roll means shown as a printing roll assembly 21 arranged to cooperate with a backup roll shown as a backup assembly or roll 22 to provide suitable printing on a web of paper, or the like, which is passed between assemblies 21 and 22 as shown at 23.
Assembly 21 comprises plate roll means shown as a plate roll 24 having printing plate means 24A which is suitably fastened to the outside peripheral surface of roll 24.. The printing action is provided by printing plate 24A engaging the above mentioned paper web; and, it will be appreciated that for different printing requirements it is generally necessary to provide a different plate roll 24 with its printing plate 24A.
Plate roll 24 is supported at its opposite ends by a pair of support assemblies or side frame assemblies 25 and 26 comprising printing machine 20. Each assembly 25 and 26 has adjusting means shown respectively as adjusting knobs 30 and 31 enabling plate roll 24 to be moved toward and away from backup roll 22 in a known manner to control the printing action or impression provided by plate 24A.
Suitable mechanical drive means is provided on machine 20 for driving backup roll 22 and plate roll 24 as will be presently described. The drive means for backup roll 22 will be presented first.
Backup roll 22 is carried and rotated by a supporting shaft 32 which is suitably supported for rotation on machine 20. Shaft 32 is driven by a drive gear 33 fixed to a terminal end portion of shaft 32. Gear 33 is rotated by a cooperating gear drive (not shown) to thereby rotate shaft 32 and roll 22.
Another gear means or gear designated by the numeral 35 is also suitably fixed to shaft 32 spaced inwardly of gear 33 toward the center of roll 22. Gear 35 drives a cooperating gear designated by the numeral 36 comprising assembly 21.
The apparatus for detachably coupling and uncoupling gear 36 in position on assembly 21 and the apparatus for detachably fastening plate roll 24 to its supporting shaft in an efficient and economical manner comprise the improved apparatus'of this invention and will now be described in detail.
Assembly 21 comprises a rotatable shaft 40, see FIGS. 1, 4, and 5, which supports plate roll 24 for rotation therewith. Shaft 40 is preferably threaded along one end portion as shown at 41 and has a keyway means shown as a keyway 42 adjacent its opposite end portion. Shaft 40 is suitably sup ported on side frame assemblies 25 and 26 as will be described subsequently.
Plate roll 24 has a cylindrical axial opening provided therein as shown at 44 and as will be described in more detail later. Roll 24 also has a keyway 44A therein adjoining opening 44 which corresponds to keyway 42 and is adapted to cooperate therewith. A key 45 is provided and used to fasten plate roll 24 to shaft 40 and prevent rotation therebetween. Thus, key 45 cooperating with keyways 42 and 44A comprise fastening means which enable roll 24 and shaft 40 to be simply and easily detachably fastened for rotation together.
A nut assembly 46 is also provided and is used to hold plate roll 24 against a collar 47 fixed to shaft 40 adjacent its terminal end portion opposite-threaded end 41. Nut assembly 46 and collar 47 prevent relative axial movement between plate roll 24 and shaft 40 upon placing plate roll 24 in position around its supporting shaft 40 and threading nut assembly 46 against one terminal end 48 of roll 24 with the opposite end 50 engaging collar 47.
Shaft 40 in this example is preferably a tubular shaft having a right circular cylindrical configuration. The outside diame' ter of shaft '40 is'preferably a standard diameter to enable use with various plate rolls interchangeably. in a similar manner plate roll 24 is of right circular cylindrical configuration and its cylindrical opening or bore 44, previously mentioned, is adapted to cooperate with shaft 40.
The outside diameter of shaft 40 and bore 44 provided in each plate roll 24 to be used therewith are, of course, con
trolled within an acceptable tolerance limit to enable easy sliding of each plate roll 24 in position over such shaft with key 45 placed in position in associated slot or keyway 42 as illustrated in FIG. 1 of the drawings. Thus, it will be appreciated that shaft 40 may be used to support plate rolls of the same size as plate roll 24 to suit the particular printing requirements by providing a cylindrical bore in each having the same dimensional tolerance limits as bore 44.
Rotatable drive means comprised of previously mentioned rotatable gear 36 is provided for rotating shaft 40 and hence plate roll 24, Gear 36 has suitable gear teeth shown at 36A adapted to be engaged by cooperating teeth in gear 35 to enable rotation of gear 36. Gear 36 also has a central flanged hub 52 with a cylindrical surface or bore 52A therein enabling gear 36 to be suitably supported on an end portion 54 of shaft 40. A slot 53 is provided inhub 52 and comprises the coupling means enabling gear 36 to be readily coupled to an uncoupled from terminal end portion 54 of shaft 40.
The coupling means also comprises pin means shown as a pin 55 adapted to cooperate with slot 53 and such pin is fixed to the terminal end portion 54 of shaft 40 by any suitable means, such as by threading or staking such pin in position. Pin 55 extends radially from the outer periphery of shaft 40 in this example of the invention and is arranged to enable gear 36 to be easily coupled or attached to shaft 40 in a readily detachable manner.
Thus, it will be appreciated that gear 36 is easily positioned on shaft 40 by inserting end portion 54 through cooperating bore 52A in hub 52 and aligning slot 53 about pin 55. Upon rotating gear 36, portions of its flanged hub 52 engage pin 55 to rotate shaft 40 and plate roll 24 keyed thereto by key 45.
For maximum structural integrity, gear 36 including its flanged hub 52 is preferably made as a single piece in this example of the invention. It will be appreciated that in some applications it may be more economical to provide the central flanged hub 52 as a standard piece with a suitable disklike portion having peripheral teeth 36A therein and means for attaching to central hub 52. A common hub 52 could thus be used with various disklike toothed outer portions.
in printing apparatus of this type the size of gear 36 is generally quite small. For example, it is not uncommon for a gear of this type to have less than 49 teeth in its peripheral surface. Thus, gears similar to gear 36 having between 32 and 49 teeth are used quite extensively.
Working with such small gears, the need to keep the means used to attached such small gears to associated shafts simpli- -and economical is apparent. The provision of slot 53 in flanged hub 52 cooperating with pin 55 provides an effective coupling device of utmost simplicity.
In the process of using apparatus it is necessary to satisfy a wide variety of printing requirements requiring various (and numerous) plate rolls similar to as well as identical to roll 24. The use of standard shaft 40, gear 36, and associated apparatus makes it possible to readily and simply support and rotate various plate rolls in an economical manner particularly, in those applications where it is necessary to replace the driving gear, which is similar to gear 36, with a different gear having a different number of gear teeth.
In those applications where it is necessary to replace the driving gear, which is similar to gear 36, with a different gear having a different number of gear teeth, such driving gear is preferably made with a similar central flanged hub having a central bore therein identical to bore 52A making it a simple matter to install on shaft 40. A slot, identical to slot 53, is also provided for engaging pin 55.
Thus, it is seen that various plate rolls are simply and easily installed on and removed from shaft 40 and that associated gear drive means to drive such plate rolls are also easily provided as required to correspond in size to the associated plate roll means.
As seen in FIG. 3, assembly 31 is suitably supported on side frame assemblies and 26. The structure used to support assembly 31 at each end-thereof will now be described.
The nut assembly 46 previously mentioned has a nut 46A and an extension 468 extending outwardly therefrom. Nut 46A and extension 468 may be made as an integral unit or as separate units and suitably fastened together. Extension 468 has a cylindrical bore 60 therein adapted to receive a rod 61 therein. Rod 61 extends outwardly from bore 60 and is in turn supported for rotation on suitable bearing means 62 provided in assembly 25.
The opposite end of assembly 21 is supported on side frame or assembly 26 by a rod 65 extending outwardly beyond gear 36. Rod 65 is held in opening or bore 52A provided in hub 52 of gear 36 at one end while the opposite end of rod 65 is supported in suitable bearing means 66 provided in assembly 26.
Thus, it is seen that assembly 21 is supported on assemblies 25 and 26 by rods 61 and 65. it will be appreciated that suitable antifriction bearing means such as ball bearing, roller bearing, improved lubricated sleeve bearings, or the like, may be provided as desired in association with either or both ends of each rod 61 or 65, as desired.
The apparatus of this invention has means for axially positioning plate roll assembly 21 relative to backup roll 22. Such means comprises an adjustable knob 70 having a threaded end portion 71 fixed thereto the terminal end of which engages terminal end 61A ofrod 61.
A spring 74 is provided at the opposite end of assembly 21 for cooperation between a surface 75 on supporting assembly 26 and a side surface 76 of gear 36. Spring 74 urges the entire assembly 31 to the left as viewed in FIG. 3 of the drawings.
Axial registry, that is, movement of assembly 21 to the left or right relative to roll 22 is obtained merely by turning knob 70 either clockwise or counterclockwise. When turning knob 70 clockwise, in this example, spring 74 is overridden and the entire assembly 21 is moved to the right. When turning knob 70 counterclockwise, spring 74 urges the entire assembly against threaded portion 71 and moves assembly 21 to the leftv In this example of the invention toothed gears have been illustrated and described as providing the desired rotation of central shaft 40 and associated plate roll means; however, it will be appreciated that other means may be employed, such as friction discs having suitable friction surface means thereon, for example, or other suitable means. Irrespective of the detailed configuration of the particular drive means used, the unique advantageous features of the apparatus of this invention may be employed to drive various plate roll means with optimum operating versatility and economy.
By employing the unique readily interchangeable interconnecting means illustrated and described herein for intercon necting plate roll means to a mechanical drive therefor it is possible to provide such interconnecting means made of superior material and having improved wear characteristics for longer life. in addition, such interconnecting drive means could be manufactured with greater precision so as to improve the overall operating performance of the associated printing apparatus, for example. In addition, it would only be necessary to stock essentially the plate rolls and expendable printing plates therefor with effort being concentrated to improve the performance of such plate rolls and expendable printing plates.
Terms such as left, right, side," and the like, have been used in this disclosure of the invention merely to describe the operation of various components as viewed in the examples presented in the drawings and the use of such terms should not be considered as limiting the scope of this invention in any way.
Thus, it is seen that an improved apparatus has been provided which is of simple construction and which utilizes certain basic component means interchangeably to drive various roll means to provide efficient and economical operation.
While the form of the invention now preferred has been dis closed as required by statute, other forms may be used, all coming within the scope of the claimed subject matter which follows.
What 1 claim is:
n it u it 1. A printing apparatus having mechanical drive means, comprising, a rotatable shaft having a uniform cross section over at least a major portion-of its length, said shaft being rotatably supported on said apparatus, a cylindrical plate roll having a bore therethrough of uniform diameter, said shaft being received in said bore with said plate roll supported on said portion of said shaft having a uniform diameter, cooperating means on said shaft and in the bore of said roll for securing said shaft and said plate roll together, collar means on said shaft adjacent one end thereof against which an adjacent end of said plate roll abuts for limiting relative longitudinal movement in a first direction between said shaft and said plate roll, removable means on said shaft adjacent the other end thereof for holding said plate roll against said collar means and preventing relative longitudinal movement in a second direction between said shaft and said plate roll, gear means slidably received over said one end of said shaft in coaxial relationship therewith, means on said one end of said shaft cooperating with means on said gear means to couple the gear means and shaft together against relative rotational movement therebetween, said gear means and said removable means each having a bore therethrough, the opposite ends of said shaft extending into and terminating within said bores in said gear means and said removable means, and spindle means received at one end thereof in said bores in said gear means and said removable means for supporting said shaft on said apparatus.
2. A printing apparatus as in claim 1, wherein said cooperating means on said shaft and in the bore of said roll comprises first keyway means in said rotatable shaft, second keyway means in the bore of said plate roll in cooperating mating alignment with said first keyway means, and key means engaged in said first and second keyway means for securing said shaft and said plate roll together.
3. A printing apparatus as in claim 1, wherein said gear means has flanged hub means with cylindrical bearing surface means thereon, and said means on said one end of said shaft cooperating with means on said gear means to couple the gear means and shaft together comprises radially extending pin means on said one end of said shaft, a longitudinally extending slot through said flanged hub portion of said gear means, and said pin received in said slot to couple the gear means and shaft together against relative rotational movement therebetween.
4. A printing apparatus as in claim 1, wherein said removable means on said shaft comprises thread means on said other end of said shaft, and nut means threaded over said thread means in position against the adjacent end of said plate roll to urge said plate roll against said collar means to prevent axial movement between said plate roll and said shaft.
5. A printing apparatus as in claim 2, wherein said flanged hub means is integral with said gear means, and said hub means comprises bearing surface means, said spindle means for supporting one end of said rotatable shaft received within said bearing surface means of said hub means.
6. A printing apparatus as in claim 1, wherein yielding means is disposed in cooperative association with an end of said rotatable shaft for urging said shaft and plate roll in an axial direction to maintain axial alignment between said plate roll and a backup roll means supported on said apparatus.
7. An apparatus as set forth in claim 6 in which, said gear means comprises side bearing face means, said yielding means comprises compression spring means cooperating between said apparatus and said bearing face means to provide said axial aligning, said rotatable shaft is a right circular cylindrical shaft, and said plate roll has cooperating cylindrical opening means enabling said shaft to be received in said cylindrical opening means, whereby various roll means having cooperating cylindrical opening means may be interchangeably positioned on said shaft to be driven thereby.
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|U.S. Classification||101/216, 101/375|
|International Classification||B41F13/08, B41F13/44, B41F13/00, B41F13/10|
|Cooperative Classification||B41F13/0008, B41F13/44, B41F13/10|
|European Classification||B41F13/00A, B41F13/10, B41F13/44|