US1779641A - Feeder for punching machines - Google Patents

Description

. 28, 1930. G. o. RocKwooD FEEDER PQR PUNCHING IIACHINES Filed Aug. 26, 1927 2 Sheets-Sheet 1 3 y :li-1253 INVENTOR. GEORGE. Q Rockwool.

' ATTORNEY-7.

BY WW,

Oct. 28. 1930. G. o.l RocKwooD 1,779,541

FEEDER FOR PUNCHING MACHINES Filed Aug. 26. 1927 2 Sheets-Sheet 2 suman B INVEN TOR. GraKa-c 0. Rocxwmp.

Patented Oct. 28, 1930 UNIT-.151D STATES PATENT OFFICE GEORGE O. ROCKWOOD, F INDIANAPOLIS,k INDIANA, ASSIGNOR 'ISOV ROQKWOOD MANU- FACTURING COMPANY, OIE?` INDIANAPOLIS, IINDIANA, A VCORIORA'IIOIT rnnnnnron rui-@crime MACHINES Application filafAugustge, v19.27'. serial No. 215,621.

` The invention `relates, to a punch presslf i The chief object ofthe invention is to provide a. punch press* with' suitable"Y means whereby materialY can bereadilyl positioned 5 for punching and will be maintained in the adjusted position 'until punched! and-there-Y after the punching and scrap willbe removed from the press in separated relation. Y The chief feature ofv the invention consists in providing means for'accomplishing the foregoing-object. l y

Another feature of the invention consists in providing means for Vautomatically Vstopping thepress .operation if the material should jam and not be discharged therefrom. AThe full natureof the Vinvention will' be understood from the accompanying" drawings and` the following 'description andl claimsz'-v Y l' In the drawingsrFig. is an elevational viewA of the major portion of the mechanism associated witha punch press', parts'being shownv in section to show the same and other parts indetail.V In Fig. 2 is a top plan Vview of thedischarge and lpunch controlmechaV nism as well as other parts of 'thedevice Fig. 3 is an end elevation of thecam power control connection.' f 1 u In the drawings 10'indicates a frameoffa 3D machine 'commonly known Vasa punch press. Said machine is provided with vertical ways 1'1 in whichV is slidablyfmounted a" punch plunger 12 carrying a punching die 13. v. yOn the base 14 is-supported Vafspider andtable having the annular ring 15 and the radial arms 16 connectingthe sameVY to the hub` 17.

A suitable wooden platforml 18 issup'ported therebyand lies slightly beneath'the level of the annular rin'g'15.` A disc or'rplate 19 is clampinglymounted between plates 2() and'201which.arecarried by a 'shaft 2llthat .extends downwardly thru the table construction and supports on its lower end a ratchet Y' wheel 22 :and brake. Pivotallysupportedgon 'f theext'ension 23-of the hub 17is a lever 'arm l24 which pivotally supports a pawl25 at 26,'k

saidV pawl engaging ratchet wheel 22 for indeXing the disc 19. f' y A connecting rod 27 may be actuated by 'c centricl strap or` the like and the comple-v mentary eccentric being mounted on the main power shaftorjotherwise actuated, the same not being shown herein;` The lever 28, thru aconnecting rod or other similar connection 30, by means ofthe universaljoint arrangement 31,is adaptedto oscillate `lever 24 to and fro land thus intermittentlyand progresvsivelyrotate ratchet wheel 22 andv disc19.

To prevent overru-nning or `return of the disc,` an adjustable brakearrangement is employed, including the brake band 32 for engaging a brake drum 33, integral with or otherwise secured to ratchet wheel 22, see

- The mechanism. forA reciprocning the A* plunger V12 and die .13 operates in timed re- Fig. 1.

lation with the movementof the discj19, that is,- the plungerroperates while the disc is stationary. Y

number of cutoutslin the form .of circular openings 34 adjacentwhich are provided a .plurality of. pinsV 35 whichhavesharpened 'Y points. y The pins extend upwardly fronr` the :dise Asthe disc 19 progressively and intermittentlyrotated, piecesA of stock are placed bythe'attendant or `operator over the openings 34at: station llA or `directly in front of the machine. Said pieces ofstockare rediel3, whereupon itis punched tol produce the desired shape and {theiscrap'and `said The diso19 is provided with a suitable shape;l are carried from beneath the die in A v the' next movement of the disc. y A knockout device 'is vemployec` l :andf for use thereof, the supporting platform- 18 iscut out soas to permit the shape orblank; to pass v therethru and be discharged into a` receptacle placed beneath. VThe knockout: device consists -of .an arm 361` secured :to and .movable with the plunger 12V.. vSaid arm supports. a bolt 37 which carries at its lower endla head 38 Vsupporting a `plate 391 against whichone' `end of the coil spring 40 bears,` the other endV being retained by the `bearing-plate wfasher e All.A The bolt or rod37 is slidably mounted an eccentric, ,said rod carrying a usual .fec-

nut 42. rIhus the knockout device has sliding movement relative to the arm for separating the shape from the scrap and has general movement toward both with said arm tor engaging the shape While associated with tive removal of the scrap amlasherein-shovvnV plate 43 is provided With slots 44 to .permit unobstructive passage of pins 35 therethrough and therebeneat-h. In `the rotation of the disc 19 it 'passes beneath the takeol:1 plate 'While the scrap rides above and upon the same and is discharged outwardly into any suitable receptacle placed adjacent thereto at rthe side-of the machine since the plate 43 is suitably` tilted for such discharge.

It the -scrap should jam and not ybe readily removed from'the prick or retaining pins 35, the edge of said scrap yWill engage the edge-of the takeoiia plate 43 and `bear against the same. 'This will V'cause the takeoii4A plate vto rotate With the disc 19 and such rotation is permit-ted, the arm 45 `supporting said takeoil being pivotally supported at 46, by Areason'of a spindle 4T'b'eing pivotally mounted ina bearing 48, 'formed in a bracket 4S), secured to `and `carried Aby frame .10. The upperend'ofthe spindle '474 carries a radial arm 5I Which at its opposite ends "terminates ina cam tooth 52,4normally se'atable tin lthe rrecessed plate portions "153 of fthe bracket 49. When the takeoff.1 plate 43' is rotated,'the scrap, Which has jammed Aagainst the same IWhen rotation of arm 46 causes arm 5l kto lelevate sincethe cam projection 52 raises the same in its rotation 'about'a-nd upon plate 53. In this elevational fmovement, arm 51 engages free Vend 54 ot thelever y5o 'fulcrumed at clon the bracket-arm'49 andthe opposite end of said lever is connectedto a control 'member 57 vconnectedfto the power 'control 4of the machine or press for stopping further 'movement of the machine, thus 'indicating to `the operator that the scrap has jammed the machine. Removal ofthe scrap permits manual return of the takeoff ipl'ate 43 to its initial position and thereafter the machine 4can be started and proceed until it again jams. The removal of the scrap normally takes placeat station D.

The invention claimed is:

1. In combination With a punching machine having a punch, a rota-ry `stock support, said support and said punch having relative movement toward and away from each other for punching, means for intermittently rotating said support in timed relation to the punching movement, a control for said punching movement, a scrap Vremover associated with said support, and a connection between said control and said remover for actuating the former by the latter when the scrap is not removed from the support by the remover.

2. In combination With a .punching machine having a punch, a rotary stock support, said support and said punch having relative movement toward and away from each other for punching, means 'for intermittently rotating V*said support in timed relation to the punching movement, a shape and scrap Aseparator'operable in timed relation with the `.punchfor removing the punched shape from 4the support, a control 'for the punching movement,a scrap remover, and a connection betvveenV said-control and said removerfor actuating the-*former -by the latter When the scrap 'is -not removed from "the `support -by said remover.

`3. In combination With-a punchingmachfine having a punch, a rotary stock support, said support and saidpunch having relative movement towardand aWa'y from eachother `for punching, means for-intermittently 'rotating said support in timed relation "to the punching movement,a shape and-scrap separator operable in timed relation -With the'punch ior removing the 'punchedfshape from the support`,a control for the punching movement,a scrap remover, anda connection-between said control and said remover for actuating the former by Athe latter -Wheng the 'scrap is `not removed from the rsupport by said remover, said shape `and scrap separation occurring Abetween the Ipunching and the scrap' -removstations.

4. In a device 'of 'the character described 'the combination 'of an intermittently rotatab'le disk, said disk having a plurality of openings therein, said openings being ar- -ranged concentr-ically with respect to the axis of rotation and in spaced Irelationito each (other, stock engagingpins secured Ito and `projecting"upwardlv from said disk and pov:sitioned adjacent the Vopeningsy for `retaining stock in registration with the openings, and a 'stock separator in juxta position to said disk and arranged 2"tofclear *the pins and for 'removing stock therefrom. j

5. In 'aldevice of the char'acter described .the 'combination of an intermittently rotatable disk, sa'id disk having a plurality of l'openings therein, said openings being a'rranged concentrically With respect to 'thefaXis otrotation .and in spaced relation to each ,-otlier, stock engaging pins Secured to and :projectingl'upvvardly from' said disk-and po- 'sitioned adjacent the openings 'for retailiing stock Iin registration with Athe openings,

-a punch forinitially cutting fa shape fin the stock and a knock-out mechanism for removing :the shape cut froin the 'stock by passing the "shape through "the 'opening :preliminary to remova1 of the scrap stock by said separator.

6. In a device ofthe character described the combination of an intermittentlyv rotatable disk, said disk having a plurality of openings therein, said openings being arranged concentrically with respect to the axis of rotation and in spaced relation to eachl other, rstock engagingV pins secured toV and projecting upwardly from said disk and positioned adjacent the openings for retaining stock in registration with the openings, a

punch forcutting a shape from the stock, a knock-out mechanism for removing the shape cut fromthe Vstock `by passing the shape through theopening, and a scrap separator in juxta position to said disk and arranged to clear the pins for removing the scrap therefrom. 7 In combination a rotatable table, having'ay plurality of stock piece receiving portionsV concentrically arranged coaxial with separator being arranged to cause movement,V of the shape and scrap 1n opposite dlrections,

one being elevated from the ltable and the other being passed through land below the table.

GEORGE o. RocKwooD.

In Witness whereof, I have hereunto aiXed Y Y my signature.

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