US1876896A - Press - Google Patents

Description

Sept. .13, 1932- J. R. FLEMING ET AL PRESS Filed June 19. 195 5 Sheets-Sheet 1 llllllllllllllllll mi be Hllllllllllll P 1932- 1. R. FLEMING ET AL 9 PRESS Filed June 19, 1951 5 Sheets-Sheet 2 Sept. 13, 1932. J. R. FLEMENG ET AL 1,876,395

PRESS Filed June 19, 1951 5 Sheets-Sheet a I? 1'1 I I Sept. '13, 1932 J. R. FLEMING ET AL 1,876,896

' PRESS Filed June 19, 1931 5 Sheets-Sheet 4 Sep t. 13,1932.

J. R. FLEMING ET AL PRESS Filed June 19. 1951 5 Sheets-Sheet 5 Patented Sept. 13, 1932 warren s'rATEs rarsnr orator.

JOHN R. FLEMING, E CLEVELAND, EDMUND'M. VTINEGAB, OF WILLOUGHBY,

OHIO, ASSIGN'ORS TOTHE OHIO RUBBER CODIPANY, OF. CLEVELAND, OHIO, A COR- PORATION OF OHIO PRESS Application filed June 19, 1931;

cipal object'aims to provide an improved and.

eliicient machine of this kind.

Another object of this invention is to provide a machine of the kind mentioned, em-

bodying novel flange bending means includ- I ing a rotatablemember constrained for translation along a pathinto which the flange t be bent extends. Another object of this invention isto provide a machine ofthe kind referred to, em-

bodying novel punch actuating means.

Still another object of this invention is to provide a machine ofthe kind referred to, embodying novel means for applying a binding strip tov a preformed body.

A further object of this kind is to provide a machine of the type mentioned embodying novel means for automatically removing the finished work and delivering the same exteriorly of the machine.

The invention may be further briefly summarized as consisting in certain novel'combinat-ions andarrangements of parts hereinaft-crdescribed and particularly setout in the appended claims.

In the accompanying sheets of drawings;

Figure 1 is an elevational view showing the delivery side of a machine embodying our invention.

Fig. 2 is a similar elevational view showing a portion of the opposite side of the machine.

3 is a partial transverse sectional elevat-i on taken on line 33 of Fig. 1.

Fig. 4 is a partial sectional plan view taken on line 4-4 of Fig. 3.

Fig. 5 is an elevational view on an enlarged scale showing the flange bending and punchingmeans.

.Fig. 6 is a sectional elevation taken on line 66 of Fig. 2 showing the flange bend ing. roll andmounting means therefon Serial No. 545,456.

Fig. 7 is a sectional elevation taken on line 77 of Fig. 2, showing the binding strip clamping and bending means.

Fig. S-isa sectional elevation taken on line 8 8 of Fig. 1, showing the ejector mechanism.

Fig. 9 is an end elevational view of one of the roll supporting andadjusting studs.

. In the drawings, to which detailed reference will presently be made for the purpose off-disclosing our invention, we have shown a machine of the punch press-type for performing a'plurality of, operations upon a body, such as a vehicle running board, or other object. Although we have shown the preferred form of machine embodying our invention, it willbe understood, of course, that our inven tion may be embodied in various other ma chines and apparatus.

Before proceeding with the detailed description of the machine, we shall describe briefly the body to beoperated upon, which, in this instance, isthe steel-rubber vehicle running board disclosedand claimedin copendingapplication, Serial Number 460,007, filed June 9, 19.80, in the name of Budd Bronson. This running board, as disclosed in said co-pending-application, and as shown in Figs.;5 to 8 of the-drawings of the present application, comprises a steel body 15, having a rubber tread 16 vulcanized to the top surface thereof. The metal body of the running board is formed as asheet'metal stamping with a depending flange 17 extending along the front'edge or, in other words, the edge thereof which is most remote from the central line of the vehicle, and a" depending flange 18 extending along the opposite or inner edge. At its ends the metal body is provided with integral depending flanges 19' over which the rubber tread 16 extends. To facilitate the vulcanization of the rubber tread tothese end flanges, the latter are left standing out at approximately an angle of relative to the top portion of metal body,

and after the rubber has been vulcanized thereto these flanges are bent downwardly to a position substantially at right angles to the top portion of the metal body, by means to be described in detail hereinafter.

The operations to be performed upon the flanged body by our machine are three in number, the first two of which are carried out in succession, and the third of which is carried out concurrently with the first two. The first operation consists in bending the rubber covered end flanges 19 of the running board, downwardly from the inclined position to the right angle position, as shown in Fig. 5. The second operation consists in punching the end flanges after they have been bent to the right angle position, to

thereby provide the same with openings for attachment to the fenders of the vehicle. The third operation, which, as stated above, is performed while the bending and punching operations are being carried out, consists in clamping abinding-strip 20 against the depending front flange 17 and bending the strip around this depending flange to secure it in place. After these three operations have been performed, the flanged body is automatically removed from the machine and delivered at a point exteriorly thereof.

The machine itself, as shown in the drawings, is provided with a suitable frame consisting of a transverse top bar 21, carried by spaced uprights 22 and 23. A supporting bed or platen 24, which extends transversely between the uprights, is supported at its ends upon the latter, and at spaced points intermediate its ends by the legs or brackets 25. For receiving and supporting the flanged body to be operated upon we provide a suitable die 26, which is supported upon the bed 24.

During the operations of bending and punching the flanges 19 and the operation of attaching the binding strip 20, it is necessary that the flanged body be securely held on the die 26, and for this purposewe provide a reciprocable slide 27. This slide is disposed between the uprights 22 and 23, and at its ends is provided with flanged heads or shoes 28 for guiding engagement with the portion of the uprights extending above the bed 24. For actuating the slide we provide a main shaft 29, which is journaled in the upri hts and is driven by suitable gearing 30 from a source of power, such as the electric motor 31. Slide actuating cams 32 of appropriate contour are secured to the main shaft 29, which upon rotation of this shaft engage the rollers 33 of the slide brackets 34 and cause the slide to be moved toward the die.

As is common in machines of the punch press type, the slide 27 of our machine is provided with a pressure pad 35 for engage ment with the top of the flanged body. As

shown in Fig. 7 of the drawings, this pressure pad is of approximately the same length as the flanged body, and is connected to the slide, for limited relative movement, with coil springs 36 interposed between the pad and slide. Any suitable connecting means may be provided for the pressure pad, such as a plurality of studs 37, which are screwed into the pressure pad and extend loosely through the slide and the coil springs 36. When the slide is moved toward the die for engagement with the flanged body, the pressure pad will engage the latter with ielding pressure and retain the same 'rmly clamped against the die while the various operations are being performed.

For bending the rubber covered end flanges 19 downwardly to their right angle position in such a manner as not to injure the rubber covering, we provide a pair of rolls 40, which, as shown in Figs. 1 and 2, are spaced apart a distance corresponding with the length of the flanged body. Each roll is carried by a yoke 41, which is movable relative to the slide and is guided in the ways 42 provided on the latter. As clearly shown in Figs. 1, 5 and 6 of the drawings, the body of the slide 27 is provided with recesses 43 located adjacent the ways 42, which accommodate, or in other Words, afford clearance for the rolls 40 when the latter gagement with the work by the cams 32. It 1 will be seen from this arrangement that the yokes 41 are constrained by the ways 42 for reciprocating movement in a definite direction relative to the plane of the slide, and

that during such movement they cause the rolls carried thereby to be translated in a downward direction along a definite path, into which the flanges to be bent extend. During this downward movement of the yolres, the rolls engage the flanges 19 and cause the latter to be bent downwardly to the right-angle position shown in dotted lines in 5. Inasmuch as these rolls are freely rotatable in the yokes, sliding movement between the flanges and the bending means is eliminated, so that there is no danger of the rubber covering of these flanges being cut or torn loose.

Since the dimensions of the flanged bodies to be operated upon may vary somewhat, it may be desirable to adjust the position of the rolls relative to the die, and for this purpose we have provided special means for supporting the rolls in their yokes. This supporting means, as shown in Figs. 6 and 9 of the drawname-sec.

ings, comprises a stub shaft or stud47, jour naled in each yoke arm and having an eccen tric pintl e 48,. upon which ismounted an antifriction bearing 49. Each roll. is. preferably recessed at its ends to receive the pintles: 48 and the anti-friction bearings 49 supported thereon- It will be seen from, this arrangement that by rotating the studs 47 in the yoke arms the position of the. eccentric pintles, and likewise the axis of the roll, will be varied relative to the die 26. For securing the studs 47 in a desired position of adjustment, we provide the same with a head portion 50 which. has a fluted peripheral surface and is countersunk into theyoke arm. One or more locking screws 51 may be provided in the yoke arm for engagement in the flutes of the head portion 50 to retain the stud in the desired position of adjustment. When the roll is to be adjusted relative to the die, these screws are removed and the .stud is rotated the desired amount, after which the screws are replaced for locking the stud in the desired position.

After the flanges 19 have been bent tothe right angle position by the downward movement of the rolls 40, it is-necessary to retract these rolls into the recesses of theslide so they will be out of the way of the punching operation which is to follow. Any suitable means may be provided for this'purpose, but, as shown in Fig. 1 of the drawings, we prefer to employ means which will cause a positive retracting movement of the rolls. This retracting means comprises a-cam 52 operably secured to the main shaft 29 for each of the roll carrying yokes 41, and an extension member 53 secured to each yoke so as toextend upwardly through a guide block 54 mounted vo-n the frame element 21. Each extension member carries a small roller 55 which engages the cam 52 at a point above the main shaft 29. By this arrangement it will be seen that after the rolls have been moved clown- .wardly by rotation of the main shaft 29, con

tion of the punching mechanism, which mechanism will next be described.

For punching these fianges we provide punches 56 which are carried in suitable number by reciprocable punch holders 57. These punch holders are preferably constructed in the form of blocks which are slidably mounted upon the bed 24 for cooperation with the ends of the die 26. As shown in Fig. 5 of the drawings, each punch holder is preferably provided with .a spring-pressed stripper plate 58, through which the punches 56 project. These stripper plates yieldingly engage the rubber covered flanges 19, in a manner which is well known in this art, and permit the punches to be withdrawn without bending the shaft 69.

lines in this figure.

nected together and to one end of an actuating link 62. The other end of this actuating link isv pivotally connected to a bracket 68,

which is secured to a reciprocable slide 64.

This slide comprises a bar disposed beneath the bed of the machine and having guide shoes 65 at its ends which cooperate with the uprights 22 and 23. As shown in Fig. 3, the legs 25 of the frame may be notched or recessed to afford clearance for the reciprocating movement of the slide. Beneath the brackets 68 this slide is provided with brackets 66, each having a small roller 6'Zwhich is engaged by an actuatin cam 68 secured to an auxiliary gear 7 O secured to the shaft 69 meshes with the gearing 30, so that the auxiliary shaft will be driven from the motor 31 in timed relation with the main shaft 29. It will be seen from the arrangement just de scribed that as the shaft 69 is rotated the cams 68 will move the slide 64 upwardly to ward the bed of the machine. This upward movement of the slide causes the toggle links 60 and 61 to assume a straight line position, which results in the punch holder being moved towardthe die and the punches being driven through the flanges 19. Upon continued rotation of the shaft 69, the slide 64 descends, preferably of its own weight, and causes the toggle linkage to assume the position shown in Fig. 1, thereby moving the punch holders to the retracted position.

While the operations of bending and punching the flanges 19 are being carried out, the binding-strip 20 is being attached to the flange 17 of the running board. This 1 binding strip is preferably formed of soft non-corrosive, metal, such as chromiunr, plated zinc, having the cross-sectional shape illustrated in Fig. 7. This strip is applied to the flange 17 by the operator before the running board is inserted into the machine, and at the beginning of the strip attaching operation occupies the position shown in full In attaching this strip to the flange 17, the lower edge 72 is bent upwardly around the lower edge of the flange to the dotted line position shown in Fig. 7. In performing this bending operation it is necessary that the binding-strip be securely clamped in place after it has been the brackets 74 which are secured to a side an ab edge of the slide, and is of a length corresponding with the length of the flanged body. Vhen the slide moves downwardly into engagement with the work, the clamping bar is also carried downwardly with the slide to a position alongside of the binding strip, as illustrated in Fig. 7. The clamping 'bar is then swung laterally and pressed against the binding strip by spaced levers 75 which are pivoted in forked supports 7 6 extending laterally from the bed 24, and is held in this position while the reciprocable punch plate 77 travels upwardly and bends the edge 72 of the strip upwardly around the lower edge of the flange 17.

For actuating the levers 75 to thereby press and retain the bar against the binding strip, we provide cams 78 of suitable shape which are secured to the shaft 69. Each of the levers is provided at its lower end with a small roller 79 which engages one of the cams'78, so that upon rotation of the shaft 69 the levers 75 are swung about their pivots to press the clamping bar 73 against the binding strip. The roller 79 of each lever is preferably held in engagement with its cam by a flat spring 80 which engages the lower end of the lever. Likewise, a spring 81 may be provided between the bar 73 and the pressure plate of the slide for normally holding the bar outwardly away from the strip so as not to interfere with the upward or downward movements of the slide.

As already stated, the lower edge 72 of the binding strip is bent around the lower edge of the flange 17 by the punch 77 while the clamping bar is held against this strip. As shown in the drawings, the punch 77 is a plate-like member, which extends along one edge of the die 26, and is slidably disposed between the die and the guide plate 83. This punch is preferably provided with a tapered work-engaging edge, which in its uppermost position, is indicated by the dotted line 84, shown in Fig. 7. For reciprocating this punch we provide a plurality of spaced connecting rods 85 which are pivoted to the punch, and are actuated by eccentrics 86 secured to a shaft 87. This shaft is preferably driven at the same speed of rotation as the shaft 69, by being geared to the latter.

It will be seen from the arrangement described, that after the slide has been moved. into engagement with the work, the clamp ing bar 73 is pressed and held against the binding strip by the action of the cams 78, and while, the binding strip is thus securely held, the punch 7 7 is moved upwardly by the eccentrics 86 to bend the strip around the flange 17 of the body.

It will be understood that when the slide moves downwardly into engagement with the work it remains in this position throughout the time required for performing the operations which we have described, namely, the bending and punching of the flanges 19, and the attaching of the binding strip 20.

fter these operations have been performed the slide actuating cams 32 permit the slide to be raised by the counter-weight 88. As the slide is moving upwardly, the flanged body is lifted away from the die in the same direction, so that its depending flanges will clear the edges of the die. Thereafter the body is swung laterally from between the slide and the die and delivered exteriorly of the machine.

For initially raising the flanged body above the die 26, and thereafter swinging the same outwardly from between the slide and die, we provide a pair of levers 90, each having an arm 91 which extends laterally above the bed 24, and is normally received in a slotted recess provided in the die 26. The arms 91 are so shaped that when the press is open and ready to receive a piece of work, these arms will lie within the recesses of the die and will not interfere with the flanged body when the same is placed upon the die by the operator. The levers 90 are pivoted for swinging movement by being keyed to a shaft 92, which extends through slots 93 provided in the legs 25, and which is journaled in movable bearing blocks 94;. These bearing blocks are mounted for sliding movement in stationary guides 95, each block being provided at its lower end with a bracket 96 carrying a small roller 97, which is engaged by a lifting cam 98 secured to the shaft 99. A portion of each lever 90 extends beyond the shaft 92, and is provided with a small roller 100 which is engaged by the cam 101, for swinging the levers 90 outwardly to the dotted line delivery position shown in Fig. 8. It will be seen from the arrangement just described, that as the shaft 99 is rotated, the earns 998 lift the bearing blocks 9% in the guides 95 thereby lifting the levers 90, which are secured to the shaft 92. This upward movement of the levers causes the arms 91 to engage the underside of the flanged body and lift the same above the die 26 while the slide is moving upwardly. Continued rotation of the shaft 99 causes the cam 101 to move the roller 100 laterally and thereby swing the levers 90 about the axis of shaft 92. This swinging movement of the levers carries the flanged body outwardly from between the slide and die.

Any suitable means may be provided for actuating the ejector mechanism, but we prefer to employ an auxiliary motor 102 for this purpose. This motor may be operably connected with the shaft 99 through suitable speed reducing gearing 103. As stated above the ejector levers 90 are moved upwardly to lift the body from the die while the slide is still moving upwardly, and to initiate this upward movement of the ejector levers we provide means for starting the motor 102 at a' time corr'esponding with a definite point in-the upward travel of the slide. This start ingvmeans maybe associated with any ap propriate moving part of the machine, but preferably comprises a limit switch 10t moimted- "on-"the frame element 21,- and' a striker lug 105 carried'by one ofthe sllde operating cams 32 for actuating the limit switch. For swinging the levers 90 in the reverse-direction,or, in other words, so -as to cause the arms91; to enter the recesses of the die, we provide the shaft 92 with one or more laterallyextendinglevers 106, to the free ends of which are connected tension springs 10?.

It-willbe noted that during the operation of the ejector mechanism, the initial upward movement ot the levers 90 causes thefianged' body to be raised above the die,' so'thatthe depending flange: 17 will clear the: edge of the die andpermit-the body to beswung: laterally-from between the slide and the die.

As-the levers 90' are swung laterally to carry the flanged body out i'rom between the slide and the'die, the depending flange 17 engages the=- extreme'end 108 of the arms 91. The

engagement ofthis flange with the endothe arms prevents the "body from sliding V freely off of thesearms when they" have beenmoved to the inclined delivery position, indicatedin dotted lines inFiga 8. Since thedepending flange'prevents the body from disengaging itself from the arn'1s91,:-it is necessary to provide means for-lifting the body- 011 of these armss: For this purpose we'provide a shutter like "plate 109 whi'ch' is short enough 1nlength to 7 pass between: the spaced arms 91. This plate is pivoted adjacent its outeredge to the laterally extending brackets 110, and

is adapted to be swung relative to the arms 91 by-meansof'an actuating rod 111. Thls rod is'arrang'e'd with'one end thereof pivoted to the plate 109 and the other end thereofex tendinguthrough a :stirrupdike guide 112, which is mounted upon the shaft 99. The

end of the rod 111 which extends into the stirrup-like member 112, is provided with a small roller 113which is engaged by a cam llesecuredfto the shaft 99.

' After the flanged body has beenlift'e'd above the die'and swung laterally out of the machine, continued rotationof the shaft 99" causesth'erodlll'to swing the plate109 upwardly betweenthe arms 91 and to' liftthe' flanged body ofl of these-arm's, As soon'as the bodyhas been lifted sufficie'ntly to cause the flange 17 to disengage the end108of these 1 arms, the body slides by gravity down thelate-109 onto a chute' or guide 115,which de livers the finishedwork'toa conveyor loading stationg or any other desired location." j

' It is important duringthe operation'of the machine that=-the slide be stopped afterthe" main 'shaft 29 has madeone complete revolution, to permit the operator to insert anotherpiece of work, and for this purpose we provide a limit switch 116- which opens the 'lcircuit of the main motor '31 at the proper time, j thereby stopping all parts of the machine except" the ejector mechanismwhich' isdriven by the separate motor 102. v 7 is mounted on the upright 23 and is adapted to be actuated bya cam -117-secu'red to the main shaft; Likewise, it is important "that the punch holders 57 be-i ully retracted aftereach' punching operation 'so' that'upon thenext downward movement of the slide there be actuated, and itwillbeimpossible for the operator to close the circuit of the driving motor'31. It is also important thatthe arms 91 of the'ejector levers be fully'retracted into the recesses of the die'by the springs 107,-"and to prevent the main motor from beingstarted and the slide lowered at a timewhen' these arms have not been retracted, we prdvide a limit switch 119 which is adapted to bea ctu-"' ated by a cam 120 secured'to'the oscillating sha'ft' '92 upon whichthe ejector-lever'sare v mounted If the ejector 'arms'are'no't fully' retracted the shaft 92 will not be rotate'disu'fficiently to actuate the s'witch'119,"and it will be impossible for the "operator to I start the "main motor. It is also desirablethatthe motor 102 be stopped atthe' propertime,

namely,'when the ejectorlevers' 90 have been swung upwardly and thearnis 9l'have been lowered or retracted into the recesses of the die. For this purpose-we provide a limit switch 121, whi'ch'is adapted to be actuated by a "cam 122 mountedlon the shaft '99. The l mit switch121 permits the motor 102 to continue to operate until theshaft 99 has been rotated toa position corresponding withthe retractdipositionof :th m ',"WhereuPon the'circuit of this motor is opened 'It will now'be' readily'seen'thatwe have provided a novel'and efficient machine for performingia pluralityof operations u on a flanged body. Since the operations are all performed in timedrelationand substantial ly automatically, an increased rate of pro duction can be maintained, so long as bodies are available for the operator to place int-he machine:

While we have illustrated and described the apparatus of-our inventionin a 'de'tailed manner, it will be understood thatwe' do notin This limit-switch tend-to limit eurselves to-the precise detaifls' of construction' and arrangements of parts,

shown and described,- -but regard our inven tion as including such changes and modifications as do not involve a departure fromthe spirit of the invention and scope of the appended claims.

Having thus described our invention what we claim is: I

1. In apparatus of the character described the combination of a frame, a die adapted to receive a flanged metal body, a slide cooperating with said die for pressing said body therebetween, a shaft mounted in said frame, means associated with said shaft for actuating said slide, and means for bending a flange of said body comprising a yoke having spaced arms, a roll carried by said arms, means asso- I ciated with said shaft for reciprocating said yoke relative to said slide, and guiding means on said slide engaging said arms whereby said roll is constrained to be translated along a path into which a flange of said body projects.

. 2. In apparatus of the character described the combination of a die adapted to support a flanged metal body, a slide cooperating with said die for pressing said body therebetween,

a roll for bending a flange of said body, a guide on said slide, a yoke supporting said roll and reciprocable in said slide, and means for actuating said yoke whereby said roll is translated along a path into which said flange extends, said yoke having adjustable roll mounting means thereon whereby the spacing of said roll relative to said die may be varied. p I 3. In apparatus of the character describe the combination of a die adapted to support a flanged metal body, a slide cooperating with said die for pressing said body therebetween, a roll for bending a flange of said body, a guide on said slide, a yoke supporting said roll and reciprocable in said slide, means for actuating said yoke whereby said roll is translated along a path into which said flange eX- tends, and means for adjusting said roll relative to said die comprising members journaled in said yoke and having eccentric pintles upon which said roll is mounted.

4. In apparatus of the character described the combination of a die adapted to support.

a flanged metal body, a slide cooperating with said die for pressing said body therebetween, means for bending a flange of said body comprising a roll associated with said slide and constrained to move along a path into which said flange extends, and means for punching the bent flange comprising a punch holder movable laterally relative to said die, a punch carried by said holder, and means for actuating said punch holder.

5. In a press of the character described the combination of a die adapted to receive a metal body, means cooperating with said die to perform an operation on said body, and

" means for automatically removing the body flanged metal body, means cooperating with said die to perform an operation on sald,

body, and means for automatically removing the body from said die and delivering the same exteriorly of said press comprising a pairof levers having arm portions disposed in recess-es provided in said die, members movable relative to said die and pivotally supporting said levers, means for actuating,

said members whereby said body is elevated above said die by said levers, and means for swinging said levers whereby said arm portions are moved with the body thereon to an inclined position exteriorly of the press.

7. In a press of the character described the combination of a die adapted to receive a metal body, means cooperating with said die to perform an operation on said body, and means for. automaticallyremoving the body from said die and delivering the same exteriorly of the press comprising a pair of pivoted levers having angularly extending arm portions disposed in recesses providedin said die, means cooperating with said 1evers for swinging the same whereby said arm portions are moved with the body thereon to a discharge position exteriorly of the press,

and means for removing the body from said arm portions.

8. In a press of the character described the combination of a die adapted to receive a flanged metal body, means cooperating with said die to perform an operation on.

said body, and means for automatically removing the body from said die and delivering the same eXteriorly of said press comprising a pair of levers having arm portions disposed in recesses provided in said die, members movable relative to said die and pivotally supporting said levers, means for actuating said members whereby said body is elevated above said die by said levers, means for swinging said levers whereby said arm portions are moved with the body thereon to a discharge position exteriorly of the press, and means for removing the body from said arm portions.

9. In apparatus of the character described the combination of a frame having a bed with a die thereon adapted to support a flanged metal body, a slide reciprocable in said frame above said bed and adapted to cooperate with said die for pressing said body therebetween,

and means for securing a binding-strip to a flange of said body comprising a clamping member carried by said slide and movable relative thereto, means for moving said clamping member into engagement with said binding-strip, a punch for bending a portion of said binding-strip around said flange and means for actuating said punch While said clamping member is in engagement with said binding strip.

In testimony whereof, We hereunto aflix our signatures.

JOHN R. FLEMING. EDMUND M. WINEGAR.

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