US1433629A - Can body or tube forming machine - Google Patents

Description

P.K.RUSE. CAN BODY 08 TUBE FORMINGMACHINE.

APPLICATION FILED MAR 18, 1921.

Patented 0015.31, 1922.,

4 SHEETS$HEET lg a? a N/H v P. KRUSE.

CAN BODY 0R TUBE FORMING MACHINE.

APPLICATION FILED MAR. 18, I92I.

1 488 629, 7 Patented 00t.31,1922.

4 SHEETS-SHEET 2L P. KRUSE.

CAN BODY 0R TUBE FORMING MACHINE.

Patented. (Pet. 31, 1922 N MS & H

P. KRUSE.

Patented. Oct. 31, 1922..

4 SH EETS-SHEET 4- Patented Diet. 311, 1922.

UNHTEM A than PETER KR'USE, 03F BROOKLYN, NEW YORK, ASSIGNOR TO E. W. BLISS COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF WEST VIRGINIA.

CAN BODY OR TUBE FORMING: MACHINE.

Application filed. March 118, 1921. Serial No. 453,342.

The present invention provides amachine in which can bodies or tubes with a reinforced seam (that is, a seam formed by U ing or channeling the lapped edges of a sheet of metal and flattening the channel so that the sides of the channel inwardly collapse) may be rapidly and expeditiously formed.

The invention further provides a novel combination, and sub-combinations, for carrying out the purposes of the invention.

An embodiment of the invention is illustrated in the accompanying drawings, wherein Figure 1 is a view, in end elevation, of

said embodiment;

Fig. 2 is a view in side elevat1on, 1n partial section (the section being on the line 2, Fig. 1), of the construction shown in Fig. 2 is a partial sectional view on the line aa, Fig. 1;

Fig. 3 is an enlarged detail view of certain of the principal operating parts shown in Fig. 1, the view being principally a sectional view;

Fig. 4: is a view similar to Fig. 3, showing the parts in a different position;

Flg. 5 is a view showing in somewhat greater detail certain of the parts shown in Figs. 3 and 4, and showing said parts in the final seam-forming position;

Fig. 6 is a detail view, principally in section, on the line 66, Fig. 1;

Fig. 7 is a detail view, in side elevation, of the horn;

Fig. 8 is a detail sectional view on the line 8-8-. Fig. 6;

Fig. 9 is a detail view, in front elevation, of the edge bender shown in Figs. 1 and 2.

Referring to said drawings, numeral 10 designates a horn of any suitable form and contour, according to the shape of the tubes or bodies to be formed.

A piece of sheet metal or the like, X, is placed or wrapped around the horn 10 in such manner that its edges overlap,, as shown in Fig. 3. The sheet of metal X is preferably automatically fed and wrapped around the horn, and for this purpose the machine may be provided with a reciprocatory feed bar 12, and folders 14, preferably of the wing type. The feed bar or bars 12 are conveniently connected to a cross bar 15 which is reciprocated by means of an oscil lating lever 16 connected by meansof a link 17 to a crank pin 18 on a disk 19 on one of the main'shafts 20 of the machine.

The wing folders may be conveniently operated by-means of a lever 24:, through connecting rods 23, the lever 24: being conveniently connected, by means of a rod 25, to a crank pin 26 on a disk 28 on another of the main shafts 30 of the machine.

Numeral designates an outside former,

and 36 an inside former, which parts coact to U or form into-a channel the lapped edges of the sheet of metal. The inside former is conveniently mounted upon the horn, and the outside former is conveniently on a part 38 mounted upon a slide 39, movable toward and from the horn, movement to the slide 39 being conveniently imparted thereto by means of a rod or rods 41 engaging, by

means of rollers 42, cams 43 conveniently on the main shaft 20. The ends of the rod or 'rods 41 are conveniently forked, as indicated at 44 (Fig. 2), and straddle the shaft 20 (or a collar thereon), and thereby guide the said rod or rods 41. For compe hug the rod orv rods 41 to closely follow the cam,

a spring or springs 45 may be attachedto the said rod or rods 41. The part 38 may be adjustably mounted in the slide, by means of screw-threads 48 (Figs. 1 and 3).- Look nuts 49 may serve to hold the part 38 in a position on the slide.

Means are provided for compressing the U-ed or channeled portion formed in the lapped edges of the sheet. These means are conveniently a hammer 50, in the form of a.

plate corresponding in the length to the seam, and conveniently working through the outside former 35. The hammer or plate 50 is conveniently attached to a block 52, and

this block 52 conveniently abuts aspring pressed block 5 1, the'springs 55 tending nor- 1 carryin the hammer 50. Movement is convenient y imparted to the plunger 57 by means of an eccentric strap 59 surrounding mounted and guided in the horn 10. The

the horn, of the wing an eccentric 60 on the main shaft 20.

Theinside former 36 is adapted to recede during the hammer stroke of the hammer 50, and to this end the inside former is conveniently formed with cams or inclined planes 63 coacting with a cam or inclined planes 61 ona slide 62, the slide 62 being conveniently slide 62 is conveniently moved back and forth by means of a lever 65 connected thereto by a short link 66, the lever 65 being actuated by an arm 67 having a in or roller 68 engaging a cam groove 69 in a disk. 70 conveniently mounte upon the main shaft 20. The arm 67 is conveniently forked, as indicated at 72, and straddles the shaft 20 or a collar thereon, in such manner as to be guided on said shaft.

The wing folders conveniently comprise a pair of pivoted arms 80 havingflexible tips or portions 81 thereon for engaging and wrapping the sheet of metal around the horn. These tips 81 are conveniently pivoted to the arms 80, as indicated at82, and resiliently pressed around said pivots by means of springs 84 (Fig. 3), the movement of the said tips 81 around their axes 82 being limited by means of headed screws 86.

For holding the wrapped sheet of metal during a part of the movement away from folders 14, means, such as resilient blocks 90, may be provided. These blocks 90 are conveniently carried in the arms 80, and are resiliently pressed toward the horn by means of springs 92, ,the

inward movement being conveniently limited by means of nuts 93 on screws 94.

The horn is conveniently provided with collapsible or resilient portions 100. These portions collapse or yield to reduce the perimeter of the horn, in order to facilitate the discharge or sliding off of the formed bodies or tubes. These portions 100 are conveniently in the form of dovetail strips fitting corresponding grooves in the horn, and pressed outwardly by means of springs 101.

For facilitating the wrapping of the sheet around the horn, the machine, at a osition in advance of the horn and Wrappm station, may be provided with means, suc as a roller 110, and an anvil 111, adapted to bend slightly the edge of the sheet wh1ch is" folded in againstthe horn ahead of the other edge. This position of the lapped edge portions is clearly shown in Fig. 3.

For facilitating the entrance of a sheet of metal between the horn 10 and a ledge 115, the horn may be mounted upon a slide 116, the slide 116 being adapted to be moved very sli htly from the ledge 115 as the sheet is fed onto the horn, this movement of the slide being conveniently effected by means of a bell crank lever 120 connected to the slide by link 121, and receiving motion from a cam 122 conveniently on the main shaft 20. This cam and the bell crank lever is shown in detail in Fig. 2 of the drawings.

Operation: A sheet of metal is wrapped around the horn 10, with its edge portions overlapping, asshown in Fig. 3. The wra ping is conveniently automatically done y means of wing folders 14, which, when the sheet is fed to the horn position, as they swing together, carry the sheet (X, Fig. 1)

with them and wrap the sheet around the horn. Previously to reaching the horn p0 sitlon, one edge portion of the sheet is conveniently bent, as by means of the roller I and anvil 110, 111. This bent edge enables the edges to lap without interference.

The inside former 36 is held in projecting position, as shown in Fig. 3. The slide 39 carrying the outside former 35 approaches during the wrapping movement, and as the wing folders start to move away, the overlapped edges are conveniently held by the resilient hammer 50 which bears against the overlapped edges of the wrapped sheet X. Moreover, the overlapped edges of the sheet,

during this initial movement away, of the wing folders, are held from moving apart by means of the resilient blocks 90, which continue to press the sheet against the horn during the initial movement away of the said wing folders. During this initial movement away, of the wing folders, the inside former starts its bendlng action upon the lapped edges of the sheet, and forms a channel or U-ed portion of the length of the tubular body former by the wrapped sheet. During this bending or U-in action, the resilient hammer 50 yields, an when the outside former 35 reaches the limit of its movement toward the horn, the lapped edges of the sheet have the form shown in Fig. 4. The slide 62 at about this time is given a quick movement, lifting the inside former out of the channel or U-ed portion fof the lapped edges of the'sheet, and, the inside former being withdrawn, the parallel walls of the U or channel colla se inward, and a seam, such as shown in ig. 5, is formed. The .outside former 35 thereupon moves naaaeae a hammer 50, and the can'body may then be removed or ejected from-the horn. To facilitate the removal, the collapsible or resilient horn sections 100 yield, reducing the,

perimeter of the h orn and allowing the tube or can body formed from thewrapped sheet while held by said'outside' former, said in- X to be easily removed from the horn.

The invention may receive other embodiments than that. herein specifically illustrated and described, and parts and sub-com binations may be used out of the specific combinations referred to.

What ll claim is e 1. An apparatus of the character described, comprising a. horn around which a piece of sheet metal is adapted to be wrapped with ends overlapping an inside former and an outside former adapted to bend the overlapped portions of thepiece of sheet metal into U or channel form, means for compressing said U-ed overlapped porbend the overlapped portions of the plece of tions while held by said outside former, and means for moving said inside former out of the ll-ed portion to permit the inward collapse of the U-ed porti ns, andthereafter holding said inside former to act as an anvil while said compressing means presses said collapsed portions on sald anvll to com-' plete the formation of the locked seam.

2. An apparatus of the character described, comprising a horn around which a piece of sheet metal is adapted to be wrapped with ends overlapping, an inside former and an outside former adapted to bend the overlapped portions of the piece of sheet metal into U or channel form, means for compressing said U-ed overlapped portions while held by said outside former, and

means for moving said inside former out of the U=ed portion to permit the inward collapse of the U-ed portions, and thereafter holding said inside former to act as an anvil while said compressing means presses said collapsed portions on said anvil to complete the formationof the locked seam, said horn having a resilient part adapted to yield to reduce the erimeter of said horn to ease the ejection of said formed body or tube.

3. An apparatus of the character described, comprising a horn around which. a piece of sheet metal is adapted to be wrapped'with ends overlapping, an inside former and an outside former adapted to bend the overlapped portions of the piece of sheet metalv into positionto hold the lapped ends ofsaid into U or channel form, and means for compressing said U-ed overlapped portions while held by said outside former, said inside former being movable out of the U-ed portion to permit the inward collapse of the lled portions, and the consequent formation of a locked seam, and wing folders adapted to wrap said piece of sheetv metal around said horn.

a. An apparatus of the character described, comprising a horn around which a piece of sheet metal is adapted to be wrapped with ends overlapping, an inside former and an outside former adapted to bend the overlapped portions of the piece of sheet metal into U or channel form, and means for compressing said [Ll-ed overlapped portions side former being movable out of the U-ed portion to permit the inward collapse of the U ed portions, and the consequent formation of a locked seam, wing folders adaptedv to wrap said piece of sheet metal around said horn, and means adapted to hold said folded sheet metal against said horn during the initial riod of the reced ing movement of said wing folders.

5. An apparatus of the character described, comprising a horn around which a piece of sheet metal is adapted to be Wrapped with ends, overlapping. an inside former and an outside former adapted to sheetdmetal into U or channel form, and means for compressing said U-ed overlapped portions while held by said outside former, said inside former being movable out of the 'U-ed portion to permit the inward collapse of the U-ed portions, and the consequent formation of' a locked seam, wmg fold- 6. An apparatus of the character de-' scribed, comprising a horn around which a piece of sheet metal is adapted to be wrapped with ends overlapping, an inside former and an outside former adapted to bend the overlapped portions of the piece of sheet metal into U or'channel form, and means for compressing said U-ed overlapped portions while held by said outside former, said inside former being movable out of the U-ed portion to permit the inward collapse of the U-ed portions, and the consequent formation of aloclred seam, wing folders adapted to and means 7 wrap said piece of sheet metal around said horn, said U-ed portion compressing means and means adapted to move said hammer sheet in lapped position prior to the bending action thereon of said formers.

An apparatus of the character described, comprising a horn around which a piece of sheet metal is adapted to be wrapped with ends overlapping, an inside former and an outside former adapted to bend the overlapping portions of the piece of sheet metal into U or channel form, and means for com- 'compr ising a resiliently mounted hammer,

ltltl pressing said U-ed overlapped portions while held by said outside former, and means comprising a cam slide engaging said inside former for moving-said inside former in and out of said outsider former.

8. An apparatus of the character described, comprising .a horn around which a piece of sheet metal is adapted to be wrapped With ends overlapping, an inside former and an outside former adapted to bend the overlapping portions of the piece of sheet metal into U or channelform, means for compressing said U-ed overlapped portions while held by said outside former, and means comprising a cam slide engaging said inside side former being movable out of the U-ed portion to permit the inward collapse of the U-ed portions, and the consequent formation of a locked seam, and means for bending one edge of the sheet prior to reaching said horn, whereby said edges may readily overlap when said sheet is wrapped around the horn.

10. An apparatus of the character described, comprising a horn, wing folders adapted to wrap a piece of sheet metal around said horn, and means on said wing folders adapted to hold said folded sheet metal against said horn during the initial period of the receding movement of said wing folders.

11. An apparatus of the character described, comprising a horn, wing folders adapted to wrap a piece of sheet metal around said horn, and means on said wing folders adapted to hold said folded sheet metal against said horn during the'initi-al period of the receding movement of said wing folders, said means comprising resiliently mounted presser pieces.

In witness whereof, I have hereunto signed my name.

PETER KRUSE.

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