US1850958A - Sheet metal beading and trimming machine - Google Patents

Description

March 22, 1932.

G. M. HORVATH SHEET METAL BEADING AND TRIMMING IIACHINE p v I 78 l 8/ INVENTOR. Gega 77X flarwaz fl BY fiwt March 22, 1932. G. M. HORVATH 1,850,958

SHEET METAL BEADING AND TRIMMING MACHINE Filed July 7, 1930 4 fg-Sheet 2 INVENTOR. Ge a 7/1.- flari/af BY A TTORNEY. .2

March 22, G M HORVATH SHEET METAL BEADING AND TRIMNING MACHINE Filed July '7, 1950 4 Sheets-Sheet 3 IN VEN TOR.

.4 TTORNEY. S

March 22, 1932. G. M. HORVATH SHEET METAL BEADING AND TRIMHING' CHINE Filed July 7, 1930 4 Sheets-Sheet 4 mm mr 0 fl W W ail-Hi2 I A TTORNEY. J.

4'/ lid/tented Mar. 22, 1932 UNITED STATES PATENT OFFICE GEZA M. HORVATH, OF HIGHLAND .PARK, MICHIGAN, ASSIGNOR TO MULLINS MANU- FACTURING CORPORATION, OF SALEM, OHIO, A CORPORATION OF NEW YORK SHEET METAL BEADING AND TRIMMING MACHINE Application filed July 7,

In the manufacture of sheet metal ware articles, it is often desirable to form a beading or shape-finish, and articularly 1n the case of vessels such as tn 5, buckets, etc. A machine capable of accomplishing such functions in a variety of patterns and details and without requirement of skilled operators is accordingly a fundamental desideratum and highly important.

To the accomplishment of the foregoing and related ends, the invention, then, consists of the features hereinafter fully described, the following description and the annexed drawings setting forth in detail an illustrative embodiment of the invention, this being indicative however of but one of the various ways in which the principle of the invention may be employed.

In said annexed drawings;

Fig. 1 is a perspective view of the machine; Fig. 2 is a vertical sectional view thereof; Fig. 3 is a transverse section taken substantially on a plane indicated by line III-III, Fig. 2; and Figs. 4-8 inclusive are detail views. 1

Referring more particularly to the drawings, there is shown a frame, in the form of a housing 2 having a base 3, and mounted to receive its drive from any suitable source, for instance an electric motor M with gear or silent chain transmission 4 to a shaft 5. Gearing 6, 7, then serves to transmit driving motion therefrom to a shaft 8, the outer end of which carries pulleys 9, 10. From this a belt connection 11 to pulleys 12, 13, serves to drive a shaft 14, the cone type of pulleys 9, 10, etc. afioading a changeable speed ratio where desire Mounted in vertical relationship so as to extend from the housing upwardly are parallel rotatable shafts 15, 16, the formed being mounted in suitable bearings 17, 18, in the frame-housing, and a bearing 19 in an upwardly extending support-arm 20 as an extension from the main frame. This shaft thus will have rotational movement, but at a location relatively stationary. The other shaft 16 is mounted so as to be capable of reciprocable movement relative to shaft 15 and such pair of shafts carry mating rotatable 1930. Serial No. 466,119.

tooling members 21, 22, these being splinedly I connected to the shafts respectively, and thus being interchangeable, various patterns and designs of mating cutting, beading, embossing and finishing rolls being availably applicable. For positioning such tooling members or rolls 21, 22, filler collars 23, 24, of a propriate dimension in any given case may e applied, the assemblage being secured in such relationship by suitable means, for instance screw-threaded nuts engaging the shafts such as to position below the retaining surfaces of members 20, 26, which being held by cap screws or the like, may be removed on occasions as required for change of the pattern rolls.

For the reciprocative movement of the shaft 16, its mounting includes a member 27 supportive of the bearings below, and extending laterally at 28 in the general form of a projecting stem with a slide 29, preferably having longitudinal grooves 30, such as to be reciprocably movable in corresponding guideways provided by members 31 secured by cap screws or other suitable means to the top of the housing-frame. The slide member 29 furthermore is regulable with respect to its associated member 28, this being efi'ected by a screw take-up 32 extending through the end 33 of member 28 and tapping into slide 29. A hand wheel or spokes 34 on such screw provides adjusting means, and desirably the hub 35 is graduated in scale form, whereby a visible indication of the respective position may be had.

The tool carrying the shaft 15 may be driven by a worm gearing 36 from main drive shaft 5, and shaft 16 may be driven similarly by a worm gearing 37 from shaft 8, the bodily movement of the tool-carrying shaft 16, above referred to, being permitted by virtue of a special spline-type connection. For this, the shaft 8, which is short, extends inwardly as a tubular sleeve 38 within which are longitudinal grooves 39 (see Fig. 3). The extension shaft 40 carrying the worm 41 which is in constant mesh with worm gear 37 for the drive of shaft 16, is of a diameter to slidably fit within the shaft sleeve 38, and no it likewise is provided with longitudinal grooves, for instance three in number, matm with the grooves 39 before mentioned. W i thin the mating portions of these grooves, bearing-balls are arranged,these being guarded against displacement out of the grooves at the end by a retaining ring 42, secured by screws or other suitable means to the shaftsleeve38. With this construction, it will be seen that rotary movement may be continuously transmitted to the tool-carrying shaft 16, while relative sliding movement between the shaft sleeve 38 and the extension shaft 40 permits of the general bodily reciprocative movement of the tool-carrying shaft 16, as the assemblage is moved with its slide 29, in the frame as afore described. For imparting such movement, the slide '29 is provided with rack-teeth 43 on its lower face,'and meshing therewith is the arcuately toothed end 44 of a lever 45 pivoted at 46, and carrying at its lower end a cam-rollerv 47 which engages the periphery of a cam 48. The

latter is suitably mounted within the framing-housing, being carried by a shaft 48, and

is laid out such as to control the rate of approach and recession in the excursion of movement of the tool-carrying shaft 16 relative to the stationary tool-carrying shaft 15'. Desirably, the cam path is such as to provide a rather quick partial feed-up movement, and then a slow progressive movement toward the work, and finally a quick recession. It will be understood that the sheet metal blank B which is operated upon is positioned between the tooling rolls 21, 22.

In order to assist return of the lever 45, springs being undesirable in this relation, I provide a trip lever 49, pivoted at 50 at a convenient point above the cam, as for instance on a suitably shaped frame member or arm 51, and presenting a finger-extension 52. The other end of the trip-lever 49 is pivotally connected to a link 53, which in turn is pivotally connected to the rack-lever 45. lVhen the cam roller 47 with its lever 45 is on the outward dwell of the cam, link 53 will correspondingly pull lever 49 into a substantially vertical position, thereby holding the tripfinger 52 in the path of a lug 54 on the face of cam 48. When however, lug 54 trips finger 52, it throws the lever 49 into an angular position, and the connecting link 53 correspondingly pulls rack-lever45 and cam-roller 47 toward the left, as viewed in Fig. 2, and the cam-roller 47 is thus brought to its innermost positon in the notch of the cam, ready for another cycle.

In the present mechanism, I provide a cyclically-operating type of movement, in which all that is required of the operator is to place his blank, and start the machines reciprocative movement of tool-carrying shaft 16, the operation on that particular blank thence completing itself and opening the jaws of the machine for replacement of a new blank. For this, a cycle control is had. The shaft 48", which carries the cam 48, also carries a worm-gear 55 by which it receives drive through a worm on shaft 14. Incorporated in the worm-gear 55 is however a cycle-control, in the form of an annular member 56 whose inner periphery presents a series of dwells 57, while the shaft 48 carries a head 58 having a catch-finger 59. The latter is pivoted in the head for a limited swinging movement inwardly and outwardly, being normallyur-ged outwardly by a spring 60 whereby to lock against dwells 57, such that the shaft 48 is then rotatably moved in step with the worm gear 55. Projectable into the path of catch-fingers 59 is a trip-pin 61, this being swung in and out by lever 62 on a rock shaft 63 having a control-handle 64. That is, by throwing-the con-,

trol handle 64 in outward direction with respect to the machine, the rock lever 63 projects the trip-pin 61 into position between members 56 and 58, and in the path of the catch-finger 59. It will thus be seen that as the latter travels around, it will engage the pin 61 and be crowded thereby inwardly, such as ,to dislodge it from the dwell 57, thereby releasing connection between driving worm-gear 55 and shaft 48. Action of the cam 48 and its associated roller 47, rack-lever 45 and slide 29 is thus suspended, the toolcarrying shaft 16-being at this time in its position remote from shaft 15.

lVhile not inherent with all blanks, with some types of work there is a tendency for the tooling-rolls to crowd the blank out of position.- A work-holder 65 may be arranged to obviate any such tendency, and this may take the form of an arm engaged against the blank, for instance tub-shaped blank B, Fig. 2, such arm being carried by a shaft 66, adjustable with respect thereto, as for instance 'by a head 64 having engagement with a slotted portion 65 to allow adjustment of position, and tightening therein by screws 66".

The work holder 65 is controlled in turn by a handle 67 positioned to swing the rock shaft 66, such rock shaft being moved by the handle 67 to swing the shoe 65 into and out of position against the work-blank. When in position, the device is locked against displacement, by a dog 68 (see Figs. 2, 4 and 5) engaging in a detent-recess 69 in the fixed flange 70. The handle 67 is pivoted to the dog-containing casing 71, and projecting lugs 72 and 73 forming an extension of the handle member may engage respectively against a spring 74 seated in a recess 75, such as to normally thrust the handle into the position shown in Fig. 4, the other lug 7 3 being engageable against the dog 68 to force it outwardly against its spring 76 for release from the detent-recess 69. Grasping the handle 67 for a swinging movement of the workengaging shoe 65 thus releases the dog 68 from its detent-recess 69 and allows the dogcontaining casing 71 to be swung together with the shaft 66 (to which it is keyed) to allow change of the .work piece.

At each side of the travelling head 27 is a work-gauge 77, in the form of a workengaging shoe or roller carried by a stem 78 adjustable as to height in an arm 79 whose inner end is secured to a lug 80 on the movable head 27. The respective arms 79 on each side are gauge-set to the proper angle in View of the particular blank to be operated upon, and are rigid .y clamped in such adjusted position by res tive bolts 81.

In operation, as will be readily understood from the foregoing, a blank B (in the particular form illustrated, a wash-machine body) is placed by the operator on the worktable 82, the blank thus extending between the tooling- rolls 21, 22, the latter as carried by the movable head 27 being at its remote or open position. The operator now swings the work-holder 65 by means of the handle 67, to the holding position, as shown in Fig. 2. The drive is started by pressing the motor starter-button s. Shafts 5, 8, 14, 15, 16 and 48' are then in rotation. The cam 48 actuates the cam-roller 47 to swing the racklever 45 and operate the rack 43 to slide the head 27 with the tool-carrying shaft 16 toward the work. The initial approach is rapid up to the point of engagement, then gradually progressing, while the toolingrollers 21, 22 work along the blank. In the particular work illustrated, the blank-body B is rotated around in the bite of the tooling-rollers, which by reason of the gradually progressive forward feed of roller 22 progressively shapes and finishes the blank. The gear-ratio driving the shafts 15 and 16 is preferably such as to give a higher speed drive for the shaft 16, thereby providing a planishing finishing action. On the operators throwing the control handle 64, the trip-pin 61 is projected into the path where it will engage trip-finger 59, releasing it from the dwell 57, whereupon the shaft 48' stops, such stoppage being timed for the outermost position of the slide-head 27 or the open position of the rollers 21, 22. The operator swings the handle 67 to release the work-holder 65, removes the finished body, and replaces a new blank B. A cycle of operation is thus had in which time is allowed for removal of the finished piece and.

the insertion of a new blank, and the moving head 27 then closes upon the work, completes it, and opens for a new change, and so on.

It will thus be seen that the machine provides a high range of adaptability, various patterns of forming and finishing trimming or cutting rolls being applicable, and the operating cycle may be timed to desirable work-standards. Moreover, highly skilled operative attention is not required, the machine itself taking care of the work uniformly. By reason also of my arrangement of work-gauging shoes or ro ls-at each side of the movable head, difficulties in the nature of dlstortion of articles such as tubs, buckets, etc., heretofore common, are wholly avoided, and a uniformly even circular product may be had.

Other modes of applying the principle of the invention may be employed, change be ing made as regards the details described, provided the means stated in any of the following claims, or the equivalent of such, be employed.

I therefore particularly point out and distinctly claim as my invention:

1. Mechanism of the character described, comprising parallel rotating shafts, one being reciprocably movable toward and away from the other, mating rotatable tooling-members splinedly carried by said shafts, bearing means for said'shafts at both ends of said tooling-members, means for reciprocating said movable shaft, means for regulating the extent of approach, means for rotating said shafts, and means for stopping such rotation after a predetermined cycle.

2. Mechanism of the character described, comprising parallel rotating shafts, one being reciprocably movable toward and away from the other, means for reciprocating said movable shaft, said means including a slidehead in which said shaft is mounted, a rackgearing for operating said slide, and a cam controlling said rack-gearing.

3. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, means for reciprocating said movable shaft, means for rotating said shaft while reciprocating, said means including a sleeve-shaft, an extension-shaft axially slidable therewithin and having gearing connection to the aforesaid reciprocably movable shaft, longitudinal mating grooves in said sleeve-shaft and said extension-shaft,.bearing-balls in said grooves, and means for rotating said sleeve-shaft.

4. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, means for reciprocating said movable shaft, and means for rotating said shaft, said means including a sleeve-shaft, an extension-shaft axially slidable therewithin and having gearing connection to said afore-mentioned reciprocable shaft, mating grooves in said sleeve-shaft and said extension-shaft, hearing balls in said grooves, and means for driving said sleeve-shaft.

5. Mechanism of the character described. comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, means for rotating said shafts, means for reciprocating said movable shaft, and means for regulating the extent of approach, said means including a slide-head in which said holder moved with the reciprocable shaft and being swingable into position to hold a blank between said tooling-members or rereciprocably movable shaft is mounted and \leasable away from such position.

a slide member regulably positionable in said slide.

6. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, and means for reciprocating said movable shaft, said means including a slide-head in which said reciprocably movable shaft is mounted, and a slide-member insaid head having longitudinal grooves laterally to cooperate with a stationary guide in which said slide is mounted.

7. Mechanism of the character described, comprising a rotatable shaft, :1 head on said shaft carrying a tangentially directed pivotally-mounted finger, an annular driven member about said shaft-head having inwardly directed dwells, resilient means tending normally to urge said finger into engagement with said dwells, and a trip-pin movable into the path of said tangential finger to release same from said dwells.

8. Mechanism of the character described, comprising a rotatable shaft, a head on said shaft, a tangential finger pivotally mounted on said head, a member surrounding said head having inwardly-directed dwells, resilient means tending normally to thrust said finger into engagement with said dwells, a trip-pin movable into the path of said finger, and a rock-lever for operating said trip-pin.

9. Mechanism of the character described comprising a rotatable shaft, a cam on said shaft, a lever controlled by said cam, a reciprocable slide operated by saidlever, a tangentially-directed trip-finger carried by said shaft, a member about said finger presenting inwardly-directed dwells, a driving gear secured to said member, resilient-means normally urging said finger into engagement with said dwells, a trip-pin insertable into the path of said tangential-finger, and means for actuating said trip-pin.

10. Mechanism of the character described,

comprising parallel rotatable shafts, one being reciprocably movable toward andaway from the other, mating rotatable toolingmembers splinedly carried by said shafts, filler-collars on said shafts, means for reciprocating said movable shaft. means for rotating said shafts, and a work-holder carried along with the reciprocably movable shaft.

11. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable tooling- 12. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, means for reciprocating said movable shaft, means for rotating said shafts, a work-holder shoe, a rock-shaft carrying said shoe, a dog normally locking said shaft with the shoe in work-engaging position, and means in common for releasing said dog and for swinging said rock-shaft.

13. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, means for reciprocating said movable shaft, means for rotating said shafts, a work-holding shoe, an arm carrying said shoe, a rockshaft, a regulable connection between said arm-and said rock-shaft whereby the distance of said shoe therefrom may be controlled, a dog normally holding said rock-shaft with the shoe in work-en aging position, an operating handle for said rock-shaft, and a lug on said handle to release said dog.

14. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, means for reciprocating said movable shaft, means for rotating said shafts, a work-engaging shoe, a slotted arm carrying said shoe, a rock-shaft having a head engaging said slotted arm, means for fastening said arm to said head in regulated position, a detentdog normally holding said rock-shaft with the shoe in work-engaging position, a casing for said dog, an operating handle pivotally mounted in said casing, a lug extending from said handle to engage and release said dog, and a spring normally holding said handle with said lug in non-engaging position.

15. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, a slide-head in which said reciprocably movable shaft is mounted, and work-gauging means including a work-engaging member at each side of said shafts carried along with the reciprocably movable shaft.

16. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, means for reciprocating said movable shaft, said means including a slide-head, a workgauging means including a work-engaging roll at each side of said slide-head, a "ertically regulable stem carrying each said roll, an arm carrying each said stem, and means for clamping each said arm to said slide-head.

17. Mechanism of the character described, comprising parallel'rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, filler collars on said shafts, means for reciprocating said movable shaft, said means including a slide-head in which said shaft is mounted, rack-gearing means for reciprocating said slide-head, a cam controlling said rack-gearing means, means for cyclically operating said cam. and work-centering means carried by said slide-head, said means including work-engaging rollers, vertically regula ble stem carrying said rollers, arms carrying said stems, and means for clamping said arms to each side of said slide-head.

18. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other. mating rotatable toolingmembers splinedly carried by said shafts,

means for reciprocating said movable shaft,

said means including a slide-head "in which said shaft is mounted, a cam and a cam-actuated lever for operating said slide-head, and means for drawing said cam-lever into the notch of said cam, said means including a link connected to said lever, a trip-lever connected to said link. and a lug on said cam in the path of said trip-lever.

19. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other. mating rotatable toolingmembers splinedly carried by said shafts, means for reciprocating said movable shaft, said means including a slide-head in which said shaft is mounted. a slide-member regulable in said slide-head and having rack-teeth, a rack-segment engageable therewith and extending as a cam-engaging lever, and means for drawing said lever into a notch of the cam, said means including a link connected to said lever, a trip-lever pivoted above said cam and having one end connected to said link and the other extending as a trip-finger, and means on said cam for tripping said finger.

20. Mechanism of the character described, comprising parallel rotatable shafts, one being reciprocably movable toward and away from the other, mating rotatable toolingmembers splinedly carried by said shafts, filler-collars on said shafts, a slide-head in which said reciprocably movable shaft is mounted, work-centering means conected to mining the relative position of said slidemember, a rack-segment engaging said slidemember and extending as a lever carrying a cam-engaging roller, a cam cooperating with said cam-roller, a cam-shaft to which said cam is secured, means for drawing said camlever toward the center of said cam, said means including a link connected to said lever, a trip-lever pivotally mounted above said cam and having one end connected to said link and the other end extending as a tripfinger, a trip-lug on said cam in the path of said finger, a head on said cam-shaft, tangentially directed fingers pivotally mounted on said head, an annular member surrounding said head having dwells directed toward said fingers, a worm-gear secured to said annular member, means for driving said wormgear, and means for releasing said tangential fingers cyclically, said means including a trip-pin insertable in the path of said tangential fingers, and means for controlling said trip-pin.

Signed by me this 24th day of June, 1930.

GEZA M. HORVATH.

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