US1471571A - Punching machine - Google Patents

Description

f A. RUBI N PUNCHING MACHINE Filed Jan. 1e. 1922 2 sheetslsheet 1 UMH lNvENTor'z Adel/071l Ryzrz ATTORNEYS.

Oct. 23, 1923.

A. RUBIN `PUNCHING MACHINE 2 Sheets-Shet 2 Filed Ja'n, as. 1922 vY .M .www mwa T ma M mRA Wh Iml. d A

Patented oci. 23, i923;

nire 'sr-Aras n ADOLPH einem, or scia-Louis MISSOURI.

PUNCHNG MAcHrnn.

' Application led'anuary 1S, 1922. Serial No.w5i29,61'.

To all whom t may concern.'

Be it known that I Anonrrr RUBIN, a citizen. of the United States', residing vat St i j trate the preferred 'form ofmy invention, ff

Louis, Missouri, have invented a certain new and useful Improvement in ,Punching Machines, of which the following .is a full, clear, and exact description, such as will enable others skilled in the art to` which it appertains to make and use the same.

This invention relates to punching machines of the kind in which a punching unit consisting-of a punch and a die is mounted in the machine insuch` a manner that it can be adjusted in various positions orremoved and replaced by adiiferent punching unit.

One object of my invention is to provide v a punching machine of the general type referred to in which the reciprocatingplaten or head of the machine is provided with a novel means for positively retracting `or withdrawing` the punch of the punching unit yfrom its co-operating' die. v

Another object is Vto provide a punching machine of the general type referred to that l l5 is equipped with a highly efcient and'easily operated means for retaining a plurality of ypunching units in adjusted position.

And still another object is to provide a punching machine that has all of the necessary requisites to a commercially successful machine intended to be used forV punching sheets for loose leaf binders, namely, punching uni-ts that can be easily adjusted into va'- rious positionsand locked, and also replaced by different punching units, means *fork positively withdrawing the punchesl from their co-operating dies when the platen of the machine moves upwardly or back to normal position and a work gauge that can be quickly and easily setso as to properly p0.- sition thesheets with relation to the punch.- ing units. f Otherv objectsV andk 'desirable features of my invention'will be hereinafter pointed out.

Figurel of the drawings isa top plan view of a punching machine constructedA in accordance with my invention.`

Figure 2 is a front elevational view of said machine. f A Figure 3 is an end view of the machine.)

VYFigure 4 is an Venlarged sectional view taken on the line l--ll of FigureQgand] Figure 5 is an enlarged frontelevational` View of a portion of the machine, illustrating the construction of one of the punch -ofr the machine. wardly and' downwardly by a means, such,

retracting devices on the platen of the maf chine; Y 4 if Referring to the drawings 'which illus- A designates the vertically*reciprocating platen or head of 'a ymanually-operated lpunching machine that is connected to ther lower end of a slideB mountednin a guideway' C that projects forwardly from the,

Vfront sideof a vertically-disposed plate D which projects upwardly fromfthe `base E The platen is moved upfor example, as an eccentric, combined with the slide'B and ,connected to y'an loperating shaft that is provided with a handle F, said slide and operating handlebeing normally maintained in an elevated position, as shown in Figure 2, by means of a r springGr that is Y combined with the operatinghandle. f The'y base E is provided with a kwork table H forreceiving the sheets oriothei` objects to be punched, and the'machine is equipped with one or more punching units of such construction thatthey can be arranged in various positions or replaced by other punching units. Preferably, each of the punching units consists of a die l formed ,in a die block I' and a co-operating punch 2 connected to the lower end of a vertically-disposed plunger J that `is slidingly mounted lin a sleeve 3 which projects upwardly fromthe ldie block I. The die block is adjustably mountedin a transverselydisposed' guideway 4` in the base E ofthe machine and is retained in position by a transversely-disposed clamping bar K that `fits in a notchv in the rear end ofthe die block'andwhichis held in clamping engagement with the die c block by means of clamping screws L mountedl in the `vertically-disposed plate D atI the rear side of the' base of the machine. WVhen the machine is equipped with 'a plurality of' v punching units, las herein illustrated, a sin- Vgleclamping bar K is used for locking the, die blocks of the various punchingY units,said

clamping bar being so arranged thatl when the screws L are tightened the die blocks -will, be movedv forwardly ,intov engagement v with the front `wall of the transversely-dis posed guidewa-y 4 in the base of the machine.

i' The Clamping b21-1' Klprevenltsthe rear ends ofthe die bl'ocksfrom moving upwardly and the front endsof said@v die blocks are prevented from moving upwardly bythe rear end portion of the work table H of the machine which overhangs the die blocks or projects into recesses in the front' ends of the die lblocks, as shown in Figure 4C. rlhe guideway 4 in the base of the machine is open either at one or at both ends so that the die blocks can be easily inserted in same and then moved transversely of the base of the machine into adjusted position.

In order that the punches 2 of: the punching units` will be positively retracted from their co-operating dies when the platen A of the machine moves upwardly, said platen is Y equipped with retracting devices that exert an upward pull on Vthe plungers or shanks J front and rear sides of the platen, saidretracting device being provided on its underside with a-pair of flanges 7, arranged at right angles to the flanges 5, that co-operate with a head piece 8 on the upper end of the 37 punch shank .I of the punching unit with the base of the machine to arrange the punch- 59 tion 8a on the plunger into the open-ended which said retracting device co-operates. The transversely-disposed grooves 6 in the platen of the machine are open at one or at both ends so that the flanges 5 of the retract- 5 ing devices M can be easily inserted in same,

and said grooves are of such dimsensions as to insure the retracting devices M movingalong the platen A when the die blocks Ivof the punching units are shifted transversely of ing units in a different position. The anges 7 on the underside of each of the retracting devices are parallel throughout' their entire length and the ends of same are spaced apart so as to enable the head piece 8 on the plunger J of the punching unit with which said retracting device co-operates to be easily arranged in engagement with said anges by introducing a contracted portion or neck porslot between said flanges. In view of the fact that' the flanges 7 of each retracting device are of considerable length and extend transversely across the underside of the platen A,

said retracting device will accommodate punching units of various kinds and sizes, namely, punching units in which the punches and dies are large or small ,or punching units in which the punches and dies are arranged Q comparatively close to the rear edge of the work table H, or some distance to the rear of the rear edge of the work table. In other words, the flanges 7 make it possible to use a punching unitinvwhich the punch is arranged adjacent the front end of the die block or a punching unit in which the punch is arranged at the center or adjacent the rear end of the die block. l

The work table H is equipped with an adjustable work gauge for enabling the sheets or other objects to be quickly arranged in proper position with relation to the punching units. In the form of my invention herein illustrated the work gauge is formed by an upwardly-projecting stop or lug 9 on a bar O that is slidingly mounted on the underside of the work table in a transversely-disposed groove in the top side of the portion of the base E on which the work table rests. The bark O is retained in adjusted position by means of a clamping device consisting of a cam P, shown in broken lines in Figure l, that is adapted 'to engage the rear edge olf said bar and move it forwardly into clamping engagement with the front wall of the groove in the base in which said bar is mounted, the cam P being connected to the upper end of a vertically-disposed shaft R oscillatingly mounted in the base and provided at its lower end with an operating handle S that projects forwardly underneath the work table and terminates adjacent the front edgeiof same. The bar O is provided in its front edge with a longitudinally-disposed notch 9a that receives a stationary pin 9b in the base of the machine so as to prevent said bar from being removed from the base. Various means may be used for locking the operating handle S, but I prefer to equip the base E with a notched rack T over which the operating handle S can be moved and retained in engagement therewith by the resiliency of the metal from which said operating handle is formed. In order that the work gauge 9 may be arranged in such a position that it is located comparatively close to the center of the work table H, said -work table is provided with a notch that extends inwardly from the left hand edge of same at a point in alignment with the bar O, as shown in Figure l, and which is `wide enough to provide a clearance for the gauge 9 when the same is moved inwardly so as to adapt it to very narrow sheets. lVhen it is desired to change the position of the gauge 9 the handle S is depressed slightly so as kto disengage it from the rack T, and said handle is then turned in the direction to cause the cam P to release the bar O which carries the gauge. The bar O can then be moved transversely of the base of the machine to arrange the gauge 9 in the proper position, and thereafter the handleSy is swung back to normal i position so as to force the cam Pinto clamping engagement with the rear edge of the bar O. c

l In order to assist the operator in setting y the punching units in proper position, the

work table is provided at its center, adjacent the guideway 4, w1th a center mark or zero mark, as shown 1n Figure 1, and at opposite sides ofsaidcenter mark are graduations provided 'with numerals that represent inches. Assuming that the machine is provided with two punchingunits, as hereinV illustrated, and that the operator desires 4to chance the position ot'Y said punching units, the tirstY stepV in adjusting said punching units is-to release the screws L that actv on the clamping bar K. Thereafter, the die blocks I of the punching units are moved transversely of the haseotthe machine `so as to arrange said die blocks closer together or` space them farther apart, the operationv or14 adjusting the die blocks causing there-` tractingdevices M ontheplaten ot the ma-Y chine to move longitudinally of the platen, and thus remain'in operative relationship with the punches which they operate. t it is desired to set the machineso that it will punch two 1 holes inV each sheet tiveV inches apart, the die block of the right khand punchino' unit is arran ed so thatthe center of C,

in setting the 'gauge 9 a sheet of the .sizevr that is to be punched is creased at its center andsaid sheet is then arranged on the work table in sucha posit-ion that the crease in saine aligns with the center mark on the work table.V Thereafter, the gauge 9 is moved into engagement with the left hand edge of the sheet and locked in position in tliemanner previously described, thus causing said Y gauge to be held in such a position-with rela.-

tion to the punching units that the sheets Vwhich are thereafter .placed on ithe work 'f table and held with their left hand edges against the gauge will be provided with holes spaced exactly live inches apart and at an equa-l distance from the side edges of the sheets. v. 5

A machine of the construction above'described is yeasy, to operateA and adjust and there is no liability of the punches sticking, due to the fact that the punches are positively retracted when the platen of thema- 1 ,chine kmoves. upwardly.

The punches are operatively connected with the platen of the machine, but they are connected iii-such a way that they are free to move relatively to the platen when the die blocks are moved into a different position, thus simplifying Still an` the adjustment of the machine. other desirable Jfeature ofmy improvedma-l chine is that the retracting devices are soV constructed that various kinds and sizes of punching units can be usedwithsame; YThe transversely .Ot the platen'.`V`

3. 'A punching -m'achine,'comprising a machine canbe; manufacturedat lalow cost,

on account of its siniple'desigii, it isstrong n and rugged'enougli to stand up under rough usage and it is very compact. n y, Havingthus described my invention, whaty Iclaim as new'Y and `desire to secure by Letters Patent is: q y. f y f 1. A punching' machine, comprising'a reciprocating platen, a punch and diel com-i bined to torin ya ysingle punching unitthat is adjust-ably` mounted on kthe base ofy the majchine, andv means f fors-positively retractingVY the punch wlienthe vplatenotjthe machine is `restored to its normal position, saidfmeans being .so constructed that it permits the punching unit to be usted longitudinally and transversely of the platen without destroying the operative relationship between said retracting means and` punch.`

2.. A, punching` machine, comprising .a reciprocating platen, a base, anadjustable punching unit carried by the base and consisting of a die and punch, mea-ns for holding said punching unitin adjusted position on thel base, kand means actuated by the platen 'for positively. retractingthe punch I l' .trom its co-operatinggdie when the vplate-n et the inacliineis restored tofnormal position, and` having .provision for enabling the punch to be Aadjusted longitudinally and platen, a base, a punching unit mounted on said Vbasein suchv a manner that .itv can be adjusted transversely thereof into` diii'erent positions, means for. retaining saidy punch-.r

ifoo

ingnnitin adjusted position` and alretractingf device on the platenr of the *machine forl positively withdrawing the punch Vfrom the die when the platen oi' the machine is raised, and combined with the punch in such a way that the punch can beA adjusted relatively` to the platen in two Vdiii'erent directions atright angles to each other. Y I

L A punching machine, comprising a re-Y ciprocating platen, `a base, apunching unitV mounted on said Vbase in such Va mannerk that ias it can be adjusted transversely thereof, and

akretracting device for the punch of said qpunching unit operatively connected with the plat-en andcomprisinga movable Vpart capable 'of being adjusted'relatively to'ithe platen onerdirecgtion and combined with f the punch in such a way that the punch canbe adjusted inra kdirection at right angles to the direction in which said part is adjusted.

5. A punching machine, comprising la re` ciprocating platen, an adjustable lpunching unit mounted in the base ofthe machine Vand comprising a die andk aV punch, means for holding said punching .unit in adjusted posi tien on the base, a retracting device on said platen that can be adjusted longitudinally of same, and aconnectionbetween `said re` tracting device and punch that permits the.l

rov

punchto be adjusted transversely of the platen. f l n1 6. A punching vmachine, comprising a reciprocating platen, a base, a punching unit mounted on said hase -in such a manner thatv itcan ybe adjusted transversely or' the base lengtliiviseot' said platen, a retracting device on the platen mounted in such a manner that itc-asn move `longitudinally of same, and a connection between said retracting device and the punch of the punching unit.

7. A punching machine, comprising a re-` ciprocating platen, a lease,V an adjustable punching unit mounted on said hase and it Ycan he adjustedtransversely thereof, a retracting device on the undersidev of said Yplaten provided Wit-h flanges that are slid,-

ingly mounted in longitudinally-disposed grooves in the front and rea-r sides of t-he platen, flanges on the undersidev of said r tracting device arrangedk at rightV angles vto the longitudinal axis of thev platen, and a head piece on the punch Ot kthe punching unit arranged in engagement with the anges last referred to.

9. A punching machine, comprising a base provided with a transversely-disposed guide- Way, a. kplurality of adjustable punching units comprising die blocks arranged in said guide'ivay, a transversely-'disposed clamping barv arranged in horizont'allydisposed grooves in the rear endsot said die blocks, means forv forcing said clamping bar forwardly so as to clampsaid die blocks against the front Wall of said guidevvay, said bar acting to prevent the rear ends of the die blocks from moving upwardly and means on the base of the machine that overlaps the front ends of said die blocks and prevents them from moving upwardly.

10. A punching machine provided With a base, a Work gauge provided with a har that is slidingly mounted in a guideivay in said base, anda cam lthat is adapted to be moved into engagement with one of the longitudinal side edges oi the bar for'rctaining thc gauge in adjusted position.

ll. A punching machine provided with a hase, a wor t gauge provided with a har that is slidingly mounted in a guideivay insaid hase, a cam that is adapted to be moved into n engagement with one of the longitudinal side 'edges of the bar for retaining the gauge in adjusted position, a. handle for. operating saidcam, and a notched rack on said hase adapted to be engaged by said handle.`

l2. A base equipped with a work table, a vWork gauge provided withy a horizontally-disposed bar slidingly mounted in a guideivay in said base, a locking device that acts on one of the longitudinal side edges of said har, and arslot in the Wort table extending inwardly from one of the edges of same'so as to provide a clearance for said Work gauge.

- ADOLPH RUBIN.

, punching machine provided with a

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