US2247952A

US2247952A - Conditioning can blank

Info

Publication number: US2247952A
Application number: US343373A
Authority: US
Inventors: Laxo Ed
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-07-01
Filing date: 1940-07-01
Publication date: 1941-07-01
Anticipated expiration: 1958-07-01

Description

July 1, 1941.

E. LAXO v CONDITIONING CAN- BLANK 3 Sheets-Sheet 1 Filed July 1, 1940 'Fiied July 1, 1940 s sheets-sheet 2 July 1, 1941. LAXO I 2,247,952

connrr xoume 01m BLANK I Filed July 1, 1940 s Sheets-Sheet; s

Patented July 1, 1941 UNITED STATES since 14 Claims.

This invention relates to treating flat stock, more particularly for forming into cylindrical structures or bodies.

This invention has utility in pre-forming and forming sheet metal strip into cylindrical blanks for can bodies. In the carrying out of this invention, there is a gripping of the length of flat sheet stock with flexing during progress preferably beyond that of the ultimate form of the container. I

Referring to the drawings:

Fig. 1 is a plan view, with parts broken away, of a can forming machine, more particularly at the station involving feeding of the blanks, processing, configuring or notching, and reconditioning or forming for the blank to go further into the can body machine;

Fig. 2 is a view of a blank as supplied, say for a sheet metal can body;

Fig. 3 is a plan view of the notched or configured blank as from the initial conditioning and acted upon at the notching or configuring station;

Fig. 4 is a View on the line IV-IV, Fig. 1, looking in the direction of the arrow, showing the device at the feed receiving side or initiating the flexing treatment of the sheet metal blank;

Fig. 5 is a section on the line VV, Fig. 4, showing the relation of the mounting bracket terminal pair as assembled with the driving shaft;

Fig. 6 is a section on the line VI-VI, Fig. 4, showing the drive gear train for the flexing roll pair;

Fig. 7 is a section on the line VIIVII, Fig. 4, showing the yiel-dable mounting between the rolls as effecting the flexing and herein for the lower or major diameter roll of the pair;

Fig. 8 is a section on the line VIII-VIII, Fig. 4, showing the directing elements for entrance and exit for the flexing regions in the processing, wherein the blank is delivered flat notwithstanding the flexing treatment;

Fig. 9 is a section on the line IXIX, Fig. 1, showing the re-processing or flexing for the stock somewhat analogous to that of Fig. 5 but with the stock fed thereto from the opposite side;

Fig. 10 is a section on the line X-X, Fig l, of a view somewhat similar to that of Fig. 8, but likewise with the stock being received at the left instead of at the right thereof, this type of device serving to deliver the stock not in the flat of Fig. 2 but in cylindrical form; and

Fig. 11 is a View of such cylindrical form of the blank as to be discharged from the. device of Fig. 10.

The steps and general drive Blanks l (Fig. 2) are in way 2 (Fig. 1) and from there they pass to the structure having general feed body frame 3 through station 4 in undergoing processing and to be delivered therefrom to table portion 5. Transfer is effected therefrom to station 6, where, through the action between upper die 1 and lower die 8 as actuated by cam 9 on drive shaft l0, notching ll, I2, produces blank I3. From this station 6 there is transfer to station l4, and the blank I3 is therefrom passed through re-processing or flexing device l5 somewhat analogous to the device at the station 4, except that the device at the station l discharges the blank in the flat while herefrom at station l5 the blank passes to be discharged for cylindrical blank body l6 (Fig. 11)

In the general carrying out of this sequence of operations, source of power as motor I! with transmission I8 may drive shaft I0 having thereon drive 20 for sprocket wheel Zl. On this shaft 10 is the cam 9 for operating the dies 1, 8, at

' the notching or re-configuring station 6. Cam 22 is also on this shaft Iii for a feed along the table from the station 5 past the station 6 to the station l4 in proper sequence, with transverse feed from the station I4 by cam 23. Cam 24 operates to device 25 (Figs, 1, 9) to shift the cylindrical blank from mandrel 26 toward the can body machine. Transmission 27 (Fig. 1) is a drive to shaft 28 (Fig. 9).

Primary flexing The device 4 (Fig. 1) is an attachment which as a unit may be adapted generally to can body machines as a flexer or conditioner in conjunction with the feed thereto. This unit is actuated I at the sprocket wheel 2i (Fig. 4) on shaft 29 in frame 3?) mounted by bolts 3i to the frame 3 of the general machine. On this shaft 29 (Fig. 6) is pinion 32 in mesh with gear 33 upon a trunnion 34, in mesh with pinion 35 on trunnion 36. The trunnion 36 is a terminus for minor roller 3'! (Fig. 8). This trunnion 36 is in anti-friction bearings 353 in mounting 39. Anti-friction bearings 4b are for the shaft 29 of the drive. Remote from this frame 3! is frame 4| having bolts 42 effective as the frame portion 3t carries the remote end of this flexing unit and mounting such with the frame 3 and thereby carrying mounting 43 in alignment with the mounting 39 for the minor roller 31 and companion major roll 44 having the trunnions 34. These

mountings

39, 43, have guide Way 45 for slide mounting lance as to the upper guide roll 31. ,tioning of this exit portion or steelface Bl betunder directing shoe 61. from this station 5 to the station 6 is effected 46 (Fig, '7) for anti-friction bearing 41 for the trunnion 34. This slide mounting 46 in the way .45 has socket 48 therein for compression helical spring 49, against which may bear adjustable stud 50. In this set-up, the upper minor roll 31 herein is shown as approximately 30 away from the vertical or perpendicular of the axis of the roller 44 (Fig. 8).

The toothed relation between the gears or

pinions

32, 33, 35, is such that the yielding action of the spring 49 does not clear these structures from relative meshing relation in the normal functioning of the machine hereunder, wherein from the feed station 2 the blanks I are fed.

The

mountings

39, 43, have screws 5| assemble thereon bar 52 (Figs. 7, 8) having entrance directing portion or steel breaker guide face 53.

roll 31. The compression spring 49 effects this firm gripping action to compensate for any slight inequalities in the gage of the stock. There is rapidity in the feed and any flexing or throwing of the blank I may not be into the region to be above the axis of the roll 31. Accordingly, there is guide steel or directing face 54 (Fig. 8) at strip 55 fixed With the

mountings

39, 43, and'extending therebetween. Anchored with this strip 55 are eyes 56, from which extends pivotally connected bolt 51 through strip 58 and there engaged by nuts 59. Compression spring 60 on this bolt 51 between the strip 58 and the eyes 56 serves as compression means holding breaker guide steel 6| at the adjustment determined by the nut 59 for cleartween the roll pair has to do with the delvery of the processed or flexed blank, in that such por- =tion may be in this instance re-flexed back toward flat for the blank at the station 5.

The stock, fromthe face BI and over the roll 44 is fdirected by the guide 62 in the member 63 which has finger 64 carried by the frames. From this steel 52 there extends table portion 65 for this flattened or first serviced or flexed blank 66 The transverse shift through the actionof the cam 9 (Fig. 1) in operating the guide finger 64.

Screw 68 (Fig. '1) may be adjusted to deter- }mine the normal clearance of the roll 44 toward theroll 31 by stop position as to the slide 46.

At such position lock 'nut 69 fixes the limit therefor as to the thrusting of the roller 44 towardor against the roller 31.

The bar 6! has terminal eyes or bearings on the trunnions 36 and thus'the face 6! may rock or swing on such bearings in providing the required clearance as to the periphery of the roller 44.

This primary flexing as an attachment may function as supplemental to a can body machine adapted to receive the bodies in the flat. While it may in some instances be deemed superfluous to supplement such flexing, this attachment may not be required.

The func- Fleming to form instead of flat In instances for directly forming to can body cylinder shape for the blank as in a special attachment or part of the machine, there may be transmission 1| (Fig. 9) to drive major roll 12 (Fig 10) having minor opposing roll 13. From the roller 13 mounting frame 14 provides Way 15 for the slide 43 in relatively yieldable mounting trunnions for this roller 12 as there is similar yielding mounting 46 for the roller 44.

In lieu of the breaker 53 there is breaker 15 from a plate 11 having screws 18 anchoring in frame 19, wherein there is guide finger B6 effecting feed to the station I4 of the blank 13 under. guide 8!. This guide 8| has directing face 82 toward the roller 13 as the blank 3 is directed below the axis of this roller 13 toward the roller The sheet stock as passing from between the rollers, strikes steel guide face 89 (Fig. 10). I

Plate 95 anchored by screws 9| with the frame 14 directs the stock to the face 89. Similar to the frame 14 is a companion frame at the remote end of the roller '12, 13. Fixed with this frame 14 is arm 92 carrying extension spring 93 extending to arm 94 rockable on pivot bearing 95. Fixed with the arm 94 is shoe 96 extending toward the mandrel 25. This structiue operates as a yieldable deflector for the flexed blank as passing between the

roll pair

12, 13, for such blank to fit about the mandrel 26 inside the directing housing 91. The stock may be thrust against such abutment or seat 98 for the one terminus of the blank. At such position of the stock the follower terminus may not strike the roller 23 but passes along the face of guide 99 of bar I00 assembled by bolts IBI with intermediate structure from the bar 83. Accordingly, adjustment of the screw against the action of the spring 85 determines the tilt angle for this device 99, 83, back of which the end of the blank l6 as about the mandrel 26 may pass and from thence be fed by the fingers v25.

Adaptability The conditioning or flexing of sheet stock hereunder has to do primarily with tin plated black iron or so-called sheet metal. This tin sheet stock is in practice handled at considerable speed in the forming machines. The mandrel is primarily adapted to a predetermined length blank or as to overall dimensions. The functioning of the device herein has to do with caring for departure in gage uniformity. The pressures hereon are considerable and the required bearings may approach the effective diameter for the minor roll. The minor roll in its functioning determines an angle of flexure which in practice is desirably beyond that of the ultimate cylindrical form the blank is to take. Due to such pressure holding there is a nicety for symmetrical form. This symmetrical form accordingly readily adapts the completed article as an efiicient device for tight sealing. The spring connections provide give or yield against dimension change and the angular or axis mountings are adapted to ranges of rocking or self-compensation against wrecking of the machine and are factors for maintained efficient accuracy in operation.

The adaptability herein as having to do with stock arises from conditions even of different hardness of the sheet metal, wherein one as acted upon between the major and minor rolls of the pair may take a greater are of curvature than another similar thickness but of different hardness or other properties. Accordingly, on the exit or take-off side between the roll pair there is occasion to adjust the position of the guide 6| as normally toward or from the major roll 44, that is, away from the line between roll centers. An adjustment functioning in a similar manner is that of the guide 99 as to the major roll 12. The position of this guid BI is yieldably adjusted by the spring 60. However, in this adjustment any shifting of this guide BI is as to the roll 44 and not away from the roller 3'! for this guide BI is in bearings carried coaxial with the roll 31. In a similar manner the guide 99 is mounted coaxial with the roll 13 in the bearings 84. Yielding or resistance thereto is from rocking as opposed by the tension spring 86 instead of the compression spring 60. This spring 86 may permit the guide 99 to swing away from the roller 12 but maintains its position constant as to the periphery of the roller 73. It is found under this adaptability for adjusting the guide 6! such may occur without requiring stopping the operation of the machine and merely by adjusting the nut 58 as opposing the spring 60 on the bolt or stem 51. To

adjust the guide 99, such may occur through the bolt 85 as opposing the sprin 86.

What is claimed and it is desired to secure by United States Letters Patent is:

l. A sheet stock processing machine embodying a major diameter roll, flexed control feed means for sheet stock toward the major roll of the pair, a minor roll to effect squeeze action toward the major roll upon the stock therebetween, said means including deflectors, for acting on the stock at a bending angle less than that of the arc of the major roll.

2. A sheet stock processing machine embodying a major diameter roll, flexed control feed means for sheet stock toward the major roll of the pair, a minor roll to eflect squeeze action I toward the major roll upon the stock therebetween, said means including deflectors for acting on the stock in directing bending for control about the minor diameter roll, and bearing means fixed with the machine for mounting one of the rolls.

3. A sheet stock processing machine embodying a dissimilar diameter roll pair, and flexed control feed means for sheet stock between the rolls of the pair including deflectors for acting on the stock at the entrance between the roll pair and additional deflectors at the exit between the roll pair, said latter deflectors being located for efiective initiation more close to the axis of the minor roll than the radius of the major roll.

4. A sheet stock processing machine embodying a dissimilar diameter roll pair, and flexed control feed means for sheet stock between the rolls of the pair including deflectors for acting on the stock at the entrance between the roll pair and additional deflectors at the exit between the roll pair, said latter deflectors being located for effective directing of the stock from between the rolls to about the minor roll.

5. A sheet stock processing machine embodying a major diameter roll, flexed control feed means for sheet stock toward the major roll of the pair, a minor roll to effect squeeze action toward the major roll upon the stock therebetween, said means including deflectors for acting on the stock at entrance for following the curvature of the minor diameter roll of the pair.

6. A sheet stock processing machine embodying a dissimilar diameter roll pair, flexed control feed means for sheet stock between the rolls of the pair including deflectors for'acting on the stock at entrance for following the curvature of the minor diameter roll of the pair, and yieldable control maintenance means between the rolls of the pair.

7. A sheet stock processing machine embodying a major diameter roll, flexed control feed means for sheet stock toward the major roll of the pair, a minor roll to effect squeeze action toward the major roll upon the stock therebetween, said means including deflectors for acting on the stock, and yieldable mounting means for one of the rolls of the pair as to the other roll for directing the stock to follow the curvature of the minor diameter roll.

8. A sheet stock processing machine embodying a major diameter roll, flexed control feed means for sheet stock toward the major roll of the pair, a minor roll to effect squeeze action toward the major roll upon the stock therebetween, said means including deflectors for acting on the stock, a yieldable mounting effective for the major roll and mounting means for the minor roll with which the yieldable mounting means is connected for directing the stock to follow the curvature of the minor diameter roll.

9. A sheet stock processing machine embodying a major diameter roll, flexed control feed means for sheet stock toward the major roll of th pair, a minor roll to effect squeeze action toward the major roll upon the stock therebetween, said means including deflectors for acting on the stock, and mounting bearings for the major roll extending into a region nearer the axis of the major roll than its periphery.

10. A can forming machine, a body forming station for the machine, a blank feeder for the machine, a processing bender in which the blank feeder may operate, a transfer therefrom, a blank configuring station for supplementally forming the blank, a blank processing bender for the formed blank, said benders embodying a major diameter roll, a minor diameter roll, and bearings for the minor diameter roll extending from the minor roll axis beyond the minor roll radius.

11. A sheet stock processing machine embodying a dissimilar diameter roll pair, and flexed control feed means for sheet stock between therolls of the pair including deflectors for acting on the stock at the entrance between the roll pair and additional deflectors at the exit between the roll pair, said latter deflectors including a guide from adjacent the periphery of the minor roll, and a bearing for such guide coaxial with the minor roll for mounting in constant relation to the periphery of the minor roll as clearance for this guide may be varied as to the major roll.

12. A sheet stock processing machine embodying a dissimilar diameter roll pair, and flexed control feed means for sheet stock between the rolls of the pair including deflectors for acting on the stock at the entrance between the roll pair and additional deflectors at the exit between the roll pair, said latter deflectors including a guide from adjacent the periphery of the minor roll,

I a hearing for such guidecoaxial with the minor r l' c m nt n constan r ati n to t e p r he y Q hemin r rlql ias l ar nce or h guide may be, varied as to the major roll, and yieidabiewmeans acting on said. guide to resist r k n of the u de as w th minor 01 13. A sheet stock prQQe sine mach n e b dying a dissimilar diameter roll pair, flexed. control feed m ns f .sheets oqk, be een t e ro ls of the pair including deflectors for acting on the c nd mount ng hea ines for on roll e t nd into a ion nearer the axis o th m j r0 n th P rip r of the m no 01 14. A sheet stock pvrQ'cessing machine embodying a roll pair, and flexed control feed means for sheet stock between the rolls of the pair including deflectors for acting on the stock at the entrance between the roll pair and additional deflector se at the exit between the roll pair, said latter deflectors including a guide from aqjacent the periphery of one roll and a bearing for such guide coaxial with such latter r011 for mounting in constant relation to the periphery of such latter roll as clearance for this guide maybe varied in'distance from the line connecting the centers of such rolls. V E A Q-