US1996382A - Seaming mechanism - Google Patents

Description

April 2, 1935. P. H. LANGE SEAMING MECHANISM Original Filed Aug. 2, 1933 2 Sheets-Sheet 2 INVEN TOR. Pfll/L H Lfl/Yf ATTORNEY Patented Apr. .2, 1935 r". i i

va p STATES ATEN o'mcai Application August 2, 1933, serum. csazs't Renewed February 19, 1935 12 Claims. (01. 11s 24) This invention relates to new and useful im- 13 is a Sectional view on an enlargedscale provements in seaming mechanism and has for showing a screw-adjustment emp y e an object to provide aseaming-mechanism for at' Referring in detail to the drawings, at' 15 is taching' ends or covers to can bodies of square, shown a stationary chuck or work holder mounted oblong or other irregular shape and which seamon a stationary shaft or; support [Gland also 5 2 ing mechanism is a simple and well balanced mounted on said support above the work holderor mechanism suitable for high speed production. chuck is a gear ll, keyed or otherwise'rigidly'fse- With the foregoing and other objects in view, cured to the support so as to be stationary there.- as will latter become more apparent, the invention with. Mounted for turning movement about the '10 includes certain features of construction, combi Support I6 is a. seaming head generally designated nation and arrangement of parts as more particul8 and including a long sleeve or tubular portion larly shown in the accompanying drawings and I9 mounted on the support l6.and at its lower pointed out in the claims. It is to be understood, end ing a flange bviously, y Suitable however, that the invention is not limited to the bearing means may be provided 'for'the' sleeve 19.

specific structure disclosed and that the invention A somewhat shorter sleeve "2| is mounted on includes all such variations and modifications as the sl ve 9 and t s ho ter leeve is for a por fall within the spirit of the invention and the tion of its length e ved by a bushingv 1 other scope of the appended claims, I bearing means 22- mounted a suitable sup:

In the drawings: port 23. It;wil1 be apparent. that plate .28 forms Fig. 1 is avertical sectional view taken substanpartof. the seaming head l8 and in fact forms 20 tially along the lane of the line l-.-l of Figp3 that part on which the operatingfmechanism and showing a seaming mechanism incorporating is mounted. Therefore, the entire seaming head the features of the present'invention; will rotate with the sleeve l9. A" cam means '24 Fig. 2 is a bottom plan view of the mechanism, carrying first and second operation camsgas will 25 one seaming roller being omittedto better illuslater be more fully set forth,, is carried by the 25 trate 'adrivemeans employed; sleeve 2| so as to rotate therewith; To the Fig. 3 is a horizontal sectional view taken sub sleeve I9 therelis secured a gear 25 and a gear 26 stantially along thev plane of the' line 3-3 of is secured to'the sleeve 2|. Meshing with the Fig. 1; gears 25'and 26 are gears 2l and28 respectively 30 Fig. 4 is aside elevational view taken as lookdriven at a continuous and constant speed; The 30 ing from the lower side of Fig-3, parts being ratio between the respective gears is such as to broken away to better illustrate details of congive the desired diiferential as,.for example'fthe struction; I V a a V W seaminghead may have eight revolutions while Fig. 5 is a detail elevational viewtaken as when the cam is making Sev n IEVO LI O astogive looking from the right in Fig.4; a differential of one. Of course, the revolutions 35 Fig.6 is a detail sectional view on an enlarged may be 9 and 8, or anything else desired as long scale and showing the structure of the'lower end s a differential O 011615 Obtainedl f i portion of a seaming roller carrying spindle; 0n the e i d i a e arranged fi st and Fig. I is an edge elevational view illustrating a second P S a =m 0hamsms and as 40 v flying coupling; these mechamsms are duplicates of one another, 40

Fig ,8 is a plan View of a cam roller g with the exceptionof the seaming rollers, a deau'xiliaryrlever employed;, scription of one will sufiice for both. It will be Fig. 9 is a side elevational view of said lever evident thateither set of mechanisms may be t with a cam roller in lace thereon the camroller first seaming pp-eraitiqn mechanism and that the being qhown in g other set of mechanism will necessarily be set to q erform the second seamin o eration' For the Fig. id is a plan view of a holder for a seam ng gum-0560f Operating the firgst 2 Second pem i V tiOn mechanisms the cam means 24 includes upi f 11 1S slmllar Vlewof Cam roller lever on par and lower cams 29I'and 30 arranged in predewhich said holder and auxlhary lever. are to be ad-' mm tio ship. t operate. the respective 50 3115 31 mounted; I i mechanisms at the proper times.

Fig 12 is all end eleva-tional View S g n T0 mount theseaming mechanisms the disc or slightly separated relation the holderof Fig. 10 plate 20 is notched or cutaway in itsopposite and the lever of Fig. 11, the view suggesting the sides as at 3| and in the notches thus formed manner of assembling of these parts;. 'and the disc receives bearing boxes 32 the purpose 5 pivot pin 34, whereby with an opening 38 extending parallel with the opening 31 and this opening 38 rotatably receives the spindle 39 of an auxiliary lever or arm 45 shown more particularly in Figs. 8 andQ. This auxiliary lever 45 is in the nature ofv an arm extending radially from one end of the spindle39. At a point spaced from its spindle 35 the auxiliary lever or arm 45 is provided with an open.-

ing 4| receiving the spindle 42 of a cam roller 43, the arrangement obviously being such that the carnroller is eccentric with relation-to the spindle 39.

Pivotedto the cam lever 35 at 44 is a bar 45 extending above the lever and having its upper end portion arranged at one side of the armfifi. A bolt .or stud 45 is carried 'by the lever and extends through the intermediate portion of the bar-45, and threaded on the outer end of said bolt or stud is anut fl between-which and the bar there is arranged a stiff coil spring 48. Obviouslygthe tendency of this spring is to force the bar '45 in the direction of the lever 35 and the arm an. The arm is bifurcatedat its'outer end as at 49 and each portion of'said outer end is perforated as ati'50 to receive a cross stud 5| car.- ried by an eyebolt 52 extending through the upper portion of the bar l5; Threaded into said portion about the saidscrew is a tubular screw 53 which latter has both internal and external threads whereby a micrometer adjustment is provided. A look nut M may'be'threaded onthe respect to the lever 35 maybe very minutely.

adjusted.

One side of the enlarged portionor' head 36 of the lever 35 is formed to provideanadjus'table mounting for a seaming tool or roller spindle holder 55. This holder 55 includes a bodyportion having an opening 56 therethrough for the reception of a bushing 5! 'in'which is mounted the seaming toolspindle58. To one side of opening 56 the body carries a projecting fin 59 cut by a groove 60 which latter'is T-shaped as best shown in Fig. 12. The head portion 35 of the camlever is providedwith a vertical slot Bl of considerable width andintermediate its upper and lower edges, saidhead carries a rib G2 intersected by said slot,

In assembling thehol'der 55 .on the head of the cam lever, the parts are so arranged that the'rib 52 enters the groove 6.0 an'dthe fin59 enters the slot 6i. T-bolts 63 are "provided and have their heads 63A disposed in the inner portion of the T-shaped groove 80 and then extend through openings 54 in the head of the lever 35 and at their outer ends carry nuts B5 adapted to.be tightened to draw the holder against the head on the lever. Set screws or bolts 56 arecarried by the head portion of the cam lever and are arranged transverse with respect to the T-bolts 53 and enter the slot 5i. The function of the screws 62 is to adjust the holder 55 radially with -of the slots 32 and said bearing boxes are therefore radially adjustable with respect to the chuck or work holder. Each bearing box includes :2. depending tubular portion 67 disposed below the disc 25 and on the upper surface of the disc a flange 68 having an elongated slot 59 therein and through which slot extends a bolt l5 threaded into the plate. It will be apparent that on loosening of the bolt 10 the bearing box 32 may be moved inwardly or outwardly with respect to the chuck 'or work holder and then secured in the desired position of adjustment on re-tightening of the bolt.

Spindle 58 extends downwardly through the bearing box 32 and its extreme lower end is reduced and screw threaded providing a stud ll. Surrounding the lower end portion of the spindle is a sleeve 12 provided with a flange or platelike portion 13 against the lower surface of which a seaming tool or roller "M is clamped or secured as by a nut 75 threaded onto the portion 70 of the spindle. As disclosed nut provided with spaced openings '16 whereby the nut may be turned by a spanner wrench although it will be understood that this is but a detail which may be altered as convenient.

On the lower tubular portion 57 of the bearing box there is rotatably mounted a gear Tl meshing with the stationary gear I! arranged above the chuck or work holder I5. The arrangement of the parts is such that gear 17 remains constantly in mesh with the gear l1 irrespective of the position of the tool or seaming roller 14. A universal driving coupling generally designated 18 forms a driving connection between the gear 17 and the spindle and seaming tool. Coupling 18 comprises a member substantially in the shape of a cross having its arms in parallel planes. .As here disclosed this coupling is provided with an opening 19 whereby the coupling is loosely disposed about the sleeve 72 and the coupling includes arms and 5! arranged at right angles to one another and arranged one above the other.

The gear H is provided with a slot 82 (see Fig. 2) slidably receiving the arm 8! of the coupling member and the plate or flange-like portion 13 0f the sleeve 72 is provided with a groove arranged at right angles to the groove 82 of the gear and the arm 85 of the coupling member is arranged in this groove of said plate or flange portion. Figs. 1 and 6 are taken at right angles to one another and a comparison of these figures will make clear the structure. With this particular driving connection it will be apparent that the sleeve 12 will be driven by the gear 17 and that such sleeve will drive the tool 74. The

gear I? will remain in constant engagement or mesh with the gear #1 and owing to the universal driving connection the tool will be rotated irrespective of its position which varies as will now be described.

7 The generated shape of the seaming tools is well understood and no description of the tools will therefore be given. It is likewise true that acter is well understood. Whena cover is to be attached to a can, the cover is positioned" on the can and the chuck of the proper configuration enters the cover. Thereafter, as the machine operates one tool gives the cover and the upper end portion of the canan initial curling and when the first tool completes its work the second tool comes into operation and seals the'cover to the can. 1

During operation the tool14 is moved toward and from the work and is carried about the work with the disc 20 and in addition revolves on its own axis which axis is formed by the spindle 58. As the parts move'the cam roller 43 engages the cam means 24 with the result that there is a tendency to force the arm 40 outwardly by turning it on its spindle 39. This is prevented by the spring 48 pressing against the bar'45 and therefore engagement of the cam roller by the cam results in the lever 35 being rocked about its pivot pin 34 in a direction to carry the spindle and tool inwardly towardthe work on the work holder or chuck;

Should a greater strain be placed on the part then required for double seaming, as when the tool is passing over aside seam of the can, the tool may move outwardly notwithstanding en'- gagement between the cam and cam roller. This movement will, of course, result in a compressing of the spring 48 due to the upper portion of the bar being forced outwardly. This permits of a turning movement of the arm 40 with its spindle '39 as an axis. Since the arm 40 turns outwardly on the vertical axis it will be apparent that the cam 'roller will remain in full engagementwith the cam sothat there willbe no excessive wear. The cam roller is kept in engagement with the cam by means of a coil spring 83 arranged in a pocket in the disc 20 and at its inner end bearing against the extreme lower end portion 84 of the spindle 39; This radially with respectto the work holder it will be apparent that gear changes may be made when tool changes are made and without the use of any additional parts save the chuck or work holder, the rollers and the gears. It is not necessary to replace the cam levers 35 or other parts since by loosening the T-bolts 63 the tool spindle holders 55 may be adjusted inwardly or outwardly and to adjust them inwardly it is but necessary, when the T-bolts are loosened to tighten the screws 66. .If the spindle holders are to be adjusted outwardly this may be accomplished by loosening or backing off the screws 66 while the T-bolts are loose. Of course, when adjustment has been made the bolts must again be tightened up. Very fine adjustments of the arm 40 and the cam roller may be made by the micrometer screw adjustment above referred to.

It will be understood that as the cam engages the cam rollerand moves from it, the tool 14 is carried to and from the chuck. The cam engagement with the roller forces the tool toward the chuck and the spring 83 causing the roller to bear constantly against the cam draws the tool away from the chuck. This latter action will also be assisted by'c'entrifugal force. The

first and' second cam rollers 43' are shown reversed with respect to one another whereby they will only engage theproper cam- 29. or-30of means'24. .Obviously', either roller may be on the first operation seaming mechanism;

Having thus setforth the nature of my invention, what I claim is: 1. In a seaming-mechanism, a stationary work holder, a seaming head, means for rotatingisaid seaming head about said work holder, Ia cam, means to'rotate said cam, a pivoted cam lever onsaid :seaming head, a roller on said lever,

means norr'nally holding said roller in engagementwith said cam'whereby said lever may be rocked by said cam, a seaming tool spindle holder, means mounting said seaming tool. spindle holder on' said lever for movement therewith and for adjustment thereon radially relative to said work holder, a seaming tool spindle in and movable with and supported by said seaming tool spindle holder, a gear on said stationary work-holder, a gear .onthe seaming head and 2. In a-seaming mechanism, a stationary'work holder, a seaming headymeans for rotating said seaming head. about said work'holder', a cam,

means. to';rotate said cam, a pivoted cam lever on said seaming head, a roller on said lever,

means normallyholding: said roller in engage-' ment with' said cam whereby said lever may be ,rocked, by. said cam, a' seaming tool spindle holder, means mounting said seaming ,tool spindle holder on said lever; for movement therewith andfor adjustment thereon radially relative to said work :holder, a seaming tool spindle in and movable with and supported by said/seaming tool spindle holder,;a bearing box in said; seaming head .below .said tool holder, means-mounting said bearing box foradjustment radially relative ,to-, said; work holder, said spindle extending through said bearing box, a gear on said work 7 holder, a gear on said bearing box and meshing constantly with the gear, on the work holder, a seaming tool carried bythe spindle below said bearing. box and adapted to be carried toward and from the ,work holder independent of the bearing box as said leveris rocked by the .cam, and a flexible driving connection between the tool and the bearing-box carried gear whereby said tool is constantly driven as it is moved toward and from-the work;

3. In a seaming mechanism,a stationary work seaming head about said work holder, a cam means to rotate saidcam, a pivoted cam lever on said seaming headya roller on* said lever, means normally holding said roller in engagement with said cam whereby said lever may beirocked by holder, means mounting. said bearing boxjforadholder, a seaming head, means for rotating said 7'0 ment thereon radially relative to said work hold- 7 er, a seaming tool spindle in and movable with-and, supportedbysaid seaming tool spindle holder, a :bearing box in said seaming head belowsaid tool justment radially relative to said work holder, said spindleextendingthrough said bearing box, a gear on said work holder, a gear on said bearing box and meshing constantly with thegear on the 3 work holder, at seamingtool carried by the spindle below said bearingzbox and adaptedto be carried toward and from the .work:holder independent. of the bearing box as said lever is rocked by the cam, a sleeve on the :lower end portion of said spindle, a plate carried bysaid sleeve and forming a support for said seaming tool, a driving connection between the bearing box mounted gear and said plate, said driving connection comprising a slot 'inathe gear, a slot in theplate' at right angles to the slot inothe'gear, and a cross shaped member on the sleeve and having its respective arms slidably. received .in the slots of the gear and plate respectively. a. c c

4. Ina seaming mechanism, a stationary work holder, a seaming heady-means for rotating said seaming head iabout said work holder, a cam, means to rotate said cam, .a pivoted cam lever on said seaming head, a roller on said lever means normally holding said roller in engagement with saidcam whereby said lever may be rocked by said. cam, a seaming tool spindle holder, means mounting said seaming tool'spindle holder on'said lever for movement therewith and for adjustment thereoniradially relative to saidworkholder, a seamingxtool spindle in and movable with and supported by said seaming tool spindle holder, a gear on said stationary work holder, a gear on the seaminghead and meshing constantly with the gear-on .the ,work holder,: a seaming tool carried by thespindle and adapted to'be carried toward and from the. worle holder as said lever is rocked by: the cam, a sleeve on theilower end portion of .said spindle, a plate carried by said sleeve andrforming a. support for said seaming tool, a driving connection between the seaming head mounted gearandsaid plate, said driving connection comprising a slotrin'the gear, a slot' in the plate. at right. angles to the slot in the gear, and a cross shaped member on the sleeve andhaving its respective armsslidably received in the slots of the gear .and plate respectively.

' 5. Ina seaming mechanism, a pivotally mounted cam lever, a cam roller'on'one end portion of said lever, said lever having its other end portion notched toprovide a' vertically extending slot, said end portion of the lever having 'a horizontally arranged rib, a seaming tool holder having a groove receiving said rib, a fin onsaid holder and entering-said slot, means securing said holder against the end portionof the lever with said rib in said groove-and said fin in said slot, and means carried by said lever and engagingsaid fin and supporting it in the desired position of adjustment in said slot. l 4

6. In a seaming mechanism, a cam and a seaming headhavinga relative revolving motion one with respect tothe'other, a lever pivotally supported on the seaming head for movement in the plane of the cam, 'aseaming tool carried by said lever, a cam roller to engage the cam,-a-support on said lever, said support including a spindle rotatably mounted by said lever and extending not said cam, and means mounting said cam roller on said am to'one side .of said spindle and for :movement withthe-arm toward and from the cam -intbe plane of the latter whereby to admit of an ,7. In a seaming mechanism, a cam and a seaming head having a relative revolving motion one with respect to the other, a lever pivotally supported on the seaming head, a seaming tool carried, by said lever, a cam rollerto engage the cam, a support on said lever, said support including a spindle rotatably mountedby said lever and extending parallel with the face of the cam, an arm on said spindle and eccentricwith respect there- .to, a bar pivotally mounted on said lever, a micrometer screw connection between said bar and the arm of said support whereby said support may be adjusted relative to said bar, spring means normally tending to movesaid bar in the direction of said lever to rotate said support and carry the arm thereof in the direction of the cam, and means mountingthe cam roller onsaid arm of the support whereby to admit of an extra outward movement of the seaming tool notwithstanding engagement of the cam and cam roller and without changing, the full face contact between thercam and cam roller.

8. In a seaming mechanism, a cam and a seaming head having a relative revolving motion one with respect to the other, a lever pivotally supported on the seaming head, a seaming tool carried by said lever, a cam roller to engage the cam, a support on said lever, said support including a spindle rotatably mounted bysaid lever and extending parallel with the face of the earn, an arm on said spindle and eccentric with respect thereto, a bar pivotallymounted on said lever, an adjustable connection between said bar and the arm or" said support whereby said support may be adjusted relative to said bar, spring means normally tending to move said bar in the direction of said lever to rotate said support and carry the arm thereof in the direction of the cam, and means mounting the cam holder on said arm of the support whereby to admit of an extra outward movement of the seaming tool notwithstanding engagement of the cam and cam roller and without changing the full face contact between the cam and cam roller.

9. In a seaming mechanism, a stationary work holder, a seaming head, means for rotating said seaming head about said work holder, a cam, means to rotate said cam, a pivotedcam lever, a roller on said lever, means normally holding said roller in engagement with said cam whereby said lever may be rocked by said cam, a seaming tool spindle holder, means mounting said seaming tool spindle holder on said lever for movement therewith-and for adjustment thereon radially relative to said work holder, a seaming tool spindle in and movable with and supported by said seaming tool spindle holder, a bearing box in said seaming head below saidtool holder, means mounting said bearing box for adjustment radially relative to said Work holder, said spindle extending through said bearing box, a gear on said work holder, a gear on said bearing box and meshing constantly with the gear on the work holder, a seaming tool carried by the spindle below said bearing box and adapted to be carried toward and from the workholder independent of the bearing box as said lever is rockedtby the cam, a flexible driving connection between the tool and the hearing box carried gear whereby said tool is constantly driven as it is moved toward and from the work,

a support on said lever, said support including a spindle rotatably mounted by said lever and extending parallel with the face of the cam, an arm on said spindle and eccentric with respect thereto, a bar pivotally mounted on saidlever, an adjustable connection between said bar and the arm of said support whereby said support may be adjusted relative to said bar, spring means nor- 'mally tending to move said bar in the direction of said lever to rotate said support and carry the arm thereof in the direction of the cam, and

means mounting thecam roller on said arm of' the support whereby to admit of an extra outward movement of the seaming tool notwithstanding engagement of the cam and cam roller and without changing the full face contact between the cam and cam roller.

10. Ina seaming mechanism, a-stationary work holder, a seaming head, means for rotating said seaming head about said work holder, a cam, means to rotate said cam, a pivoted cam lever, a roller onsaid lever, means normally holding said roller in engagement with said cam whereby said levermay be rocked by said earn, a seaming tool spindle holder, means mounting said seammg tool spindle holder on said lever for movement therewith and for adjustment thereon radially relative to said work holder, a seaming tool spindlein and movable with and supported by said seaming tool spindle holder, a bearing box in said seaming head below said tool holder, means mounting said bearing box for adjustment radially relative to said work holder, said spindle extending through said bearing box, a gear on said work holder, a gear on said bearing box and meshing constantly with the gear on the work holder, a seaming tool carried by the spindle below said bearing box and adapted to be carried toward and from the work holder independent of the bearing box as said lever is rocked by the cam, a flexible driving connection between the tool and the bearing box carried gear whereby said tool is constantly driven as itis moved toward and from the work, a spring pressed rotatable support on said lever, and said support carrying the cam roller to thereby admit of an extra outward movement of the seaming tool notwithstanding engagement of the cam and cam roller.

11. In a seaming mechanism, a cam and a seaming head having a relative revolving motion one with respect to the other, a lever pivotally supported on the seaming head, a seaming tool carried bysaid lever, a cam roller to engage the cam,

a support on said lever, said support including a spindle rotatably mounted by said lever and extending parallel with the face of the cam, an arm on said spindle and eccentric with respect thereto, spring means normally tending to rotate said support on its spindle to carry said arm in the direction of said cam, means mounting said cam roller on said arm to one side of said spindle whereby to admit of an extra outward movement of the seaming tool notwithstanding engagement of the cam and cam roller and without changing the full face contact between the cam and cam roller, and spring means engaging the lower end of said spindle and serving to maintain said cam lever in position with said roller in engagement with the cam. V

12. In a seaming mechanism, a work holder, a

cam lever, a vertical pivot mounting said lever,

means engaging the fin and securing it in the desired position'in said slot to secure the tool holder in the desired position of adjustment. PAUL H. LANGE.

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