JP2004188423A - Method and device for manufacturing deformed can - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for manufacturing pretty and diversified deformed cans capable of excellently forming shrinking diameters of a barrel part of a bottomed seamless cylindrical can without using a core or the like and capable of preventing the generation of the wrinkles, while productivity is high and an expensive equipment is not required. <P>SOLUTION: A flange processing and a neck-in processing are performed to the opening section of the barrel part of the can and the can 50 whose bottom section is formed to a bottom section having a smaller diameter than the outer diameter of the barrel part of the can is pinched from the opening side and the bottom side in the axial direction and in this condition, by engaging a ring-shaped drawing die 8 from the opening side and/or the bottom side with the barrel part of the can and by relatively sliding the drawing die in the axial direction, the shrinking diameter forming is performed through the drawing process to the prescribed position of the barrel part of the can. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method and an apparatus for forming a deformed can, and more particularly to a method and an apparatus for manufacturing a deformed can that can reduce the diameter of a metal can into an arbitrary shape without using a core.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a method of forming a can with a body part of a bottomed seamless cylindrical can partially deformed (hereinafter referred to as a deformed can) from a bottomed seamless cylindrical can, a drawing die is inserted into the can and the inside thereof is inserted. There is known a method in which a core is inserted into a can, or a method in which a core is inserted into a can and a pressure from an external drawing die is backed up by the core while the core is backed up. However, in these methods, the apparatus is complicated, the degree of forming is limited by the opening area of the can, and the workability is inferior, and these methods cannot be directly connected to the conventional high-speed can-making line. It has to be provided as a dedicated line separately from the line, so that there is a problem that expensive equipment cost is required and productivity is low. On the other hand, as a method of increasing productivity without using a core, drawing is performed on the body from the shoulder formed by necking to the bottom, and then drawing is further performed from the bottom of the metal can. In this way (see Patent Literature 1), or drawing is performed on the outer periphery near the bottom of the metal can, then necking is performed near the opening, and drawing is performed on the outer periphery near the shoulder. A method of forming a deformed can by performing flange processing or curling processing on an opening has also been proposed (see Patent Document 2).
[0003]
[Patent Document 1]
Japanese Patent Publication No. 3-9812
[Patent Document 2]
JP 2000-218333 A
[0004]
[Problems to be solved by the invention]
The latter method, in which a deformed can is formed by drawing from the shoulder or the bottom, has a simpler apparatus, has better workability, and is more compact than a case in which a core is inserted into the inside of the can. It has the advantage of being unaffected by the size of the child. However, in this case, since there is no backup for the molding pressure, there is a problem that wrinkles and irregular deformation are apt to occur in the can and molding failure is likely to occur. In the conventional forming method by drawing, which is proposed in Patent Document 1 or Patent Document 2, etc., the opening or the bottom of the can body is pressed with a drawing die while pressing the support, so that the forming until the forming is completed. In the middle of the process, the can body is held only by the drawing die and the support. For this reason, the clamping interval of the can body is displaced during molding, and since it is clamped in the molding processing portion, the clamping pressure acts on the circumferential surface of the can body unevenly, and the clamping is likely to be unstable, and during the processing, There is a disadvantage that the can is shaken and the body of the can is easily wrinkled. In addition, in the conventional method, since the support for supporting the can facing the drawing die is fixed and does not displace during molding, the reduction in the diameter of the can due to the diameter reduction is absorbed in the height direction of the can body. Since it cannot escape, the reduced diameter of the can must be absorbed by increasing the thickness of the can body, and from that viewpoint, there is a problem that wrinkles are easily generated on the molding surface and the appearance is impaired.
[0005]
Therefore, the present invention is to solve the above problems of the prior art, without using the core and the like of the bottomed seamless cylindrical can, by drawing from the outside of the can body, Provided is a method and apparatus for manufacturing a deformed can which can perform a reduced-diameter molding while suppressing the generation of wrinkles efficiently and without requiring expensive equipment, and can produce a variety of beautiful and varied deformed cans. The purpose is to:
[0006]
[Means for Solving the Problems]
The method for manufacturing a deformed can according to the present invention for solving the above-mentioned problems is a method for manufacturing a deformed can by drawing an outer peripheral surface of a body portion of a cylindrical can to produce a deformed can. Direction, and then a draw mold that operates differently from the operation of the can support is fitted to the can body and slid relatively in the axial direction, so that the can body has a predetermined shape. It is characterized in that the diameter is reduced by drawing to a position.
[0007]
The reduced diameter forming is processed in a plurality of steps by a plurality of drawing dies having different inner diameters, and the first step is a first-step drawing forming die having the largest inner diameter and is drawn from an opening side or a bottom to a position furthest in the processing direction. Forming, the second step is drawn by a second step draw forming die having a smaller inner diameter than the first step draw forming die to a position closer to the processing position in the first step, and thereafter, the draw forming is performed by sequentially reducing the inner diameter. By shortening the forming distance in order to manufacture cans having a diameter gradually reduced along the body, it is possible to obtain cans having a reduced diameter in multiple stages or a diameter reduced in an inclined manner. The draw forming can be performed from either the upper or lower direction of the can. The draw mold has a ring-shaped hole, and one of the upper and lower sides of the can support passes through the ring-shaped hole to support the can body, so that strict alignment is achieved. It is possible to perform accurate deformation processing with the center of the can as the axis of symmetry. Further, at the time of drawing by the drawing mold, a gap is formed between one of the upper and lower can supports and the can, and the elongation of the can by the drawing is absorbed by the gap. Draw processing can be performed while suppressing the occurrence of wrinkles. Furthermore, any one of the can supports is mounted so as to be bufferable, and a stroke error of the can support itself is absorbed by absorbing a stroke amount error when the can body is clamped, and a clamping pressure due to an error in the can body height is reduced. It can absorb effectively and can support the can at a constant pressure. In addition, during the drawing process, by supplying air into the can to pressurize the inside of the can, it is possible to more effectively suppress the generation of wrinkles.
[0008]
Further, the apparatus for manufacturing a deformed can of the present invention which solves the above-mentioned problem is a manufacturing apparatus for a deformed can which manufactures a deformed can by drawing a body outer peripheral surface of a cylindrical can, and supports the can vertically. The can support, which operates separately from the operation of the can support, is fitted to the can body and relatively slid in the axial direction, thereby reducing the diameter by drawing to a predetermined position on the can body. A draw forming die to be formed, and a draw forming die driving means for sliding the forming die relative to the can in the axial direction of the can body.
[0009]
The clamping means includes a flanging die attached to the opening-side driving body and a knockout table or a bottom chuck attached to the bottom-side driving body, and the drawing die driving means includes a shaft attached to the opening-side driving body. An opening-side drive rod slidably provided in the direction, or a bottom drive rod slidably provided in the bottom-side drive body in the axial direction. In the case where the drawing die is mounted on the bottom side and the drawing is performed from the bottom side, the drawing die can be mounted on the bottom side driving rod.
[0010]
The opening-side driving body includes an opening-side driving rod and an opening-side central shaft that moves up and down through the center thereof, and the opening-side driving rod and the opening-side central shaft are independent of each other in the axial direction. It is desirable that the flanging die and the drawing die can be interchangeably attached to the lower end of the opening side drive rod. The bottom driving body includes a bottom driving rod that is slidably driven in the axial direction, and a knockout table that penetrates the center of the bottom driving rod and is slid independently of the bottom driving rod. It is desirable that a drawing die and a bottom chuck can be interchangeably attached to the bottom drive rod. More preferably, the flanging die is attached to the opening-side mounting base or the opening-side central shaft so as to be cushionable in the axial direction.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS.
1A and 1B show a cross section of a main part of an apparatus for manufacturing a deformed can according to an embodiment of the present invention, wherein FIG. 1A shows a state in which molding is performed from the bottom side, and FIG. Is shown. The deformed can manufacturing apparatus of the present embodiment is drawn and ironed into a cylindrical shape in a normal canning line, and a bottomed seamless cylindrical metal can that has been subjected to neck-in processing and flange processing is formed from the bottom side according to a desired shape. Alternatively, a plurality of forming heads are arranged at a predetermined pitch on an outer peripheral portion of a forming turret (not shown) by drawing from the opening side to form a deformed can. FIG. Is shown.
[0012]
As a basic configuration, each forming head includes a bottom driver 2 and an opening driver 3 that relatively move along a coaxial line. The bottom driving body 2 is configured such that a knockout table 5 that supports the bottom of the can body, a drawing die 8 when drawing from the bottom side, and a bottom chuck 9 when drawing from the body side are replaceable. It comprises a bottom drive body 6 to be attached, and each is independently driven up and down along an axis by a cam (not shown) as the turret revolves. The bottom-side drive body 6 has a mounting base 10 provided on the upper end of a bottom-side drive rod 7 having a cam follower (not shown) at the lower part. The bottom-side drawing die 8 or the bottom chuck 9 is mounted on the mounting base 10 via a mounting ring 27. It is mounted freely. An inner screw is formed on the inner peripheral surface of the mounting ring 27 and is screwed with a screw formed on the outer peripheral portion of the mounting base 10 to removably attach the ring-shaped bottom-side drawing die 8 or the bottom chuck 9. It has become. A through hole is provided in the center of the bottom drive rod 7 along the axis, and the knockout shaft 11 of the knockout table is fitted in the through hole so as to be vertically movable. Further, in the present embodiment, the mounting base 10 has the concave portion 12 so that the bottom of the can that has passed through the bottom side drawing die 8 can be located at the time of drawing, but the forming surface 22 of the drawing die and the mounting base It is sufficient if there is a gap between the upper surface and the upper surface so that the molding portion of the can can pass through the molding surface 22 of the drawing die. Instead of providing a recess in the mounting base, the height of the bracket 22 may be increased. Numeral 13 in the drawing denotes a vacuum hole provided on the knockout shaft 11 and opening on the upper surface of the knockout table, which is connected to a vacuum source (not shown) so that the bottom of the can supplied to the knockout table can be suction-held. Has become. Thus, the can can be supported at an accurate position without the can being displaced even when the turret is rotated.
[0013]
On the other hand, the opening-side driving body 3 includes an opening-side driving rod 15 and an opening-side central shaft 16 that moves up and down through the center thereof. A cam follower is provided, and the turret is rotated so that it can be independently driven up and down in the axial direction by a cam (not shown). An opening-side mounting base 20 is fixed to the lower end of the opening-side drive rod 15. When the opening-side mounting base 20 is formed by drawing from the bottom side, the flanging die 17 uses a flanging die mounting jig 18. In the case of forming by drawing from the opening side, the opening side drawing die 19 is detachably mounted via an appropriate drawing die mounting jig 21. The flanging die mounting jig 18 is composed of an assembly of a first member 24, a second member 25, and a third member 26, and the first member 24 is attached and detached by a mounting ring 31 having an inner screw formed on the opening-side mounting base 20. Can be attached freely. The first member 24 and the second member 25 are slidably fitted in a nested manner. The spring 30 keeps an interval with a predetermined spring pressure and applies a predetermined pressure or more to the flanging die 17. The cushion can absorb the elongation of the can body. The third member 26 is fixed to the second member 25, and the flanging die 17 is fixed to the third member 26. An external air pipe is connected to the second member 25, and pressurized air is supplied from the second member 25 to the inside of the can through the third member 26 and the flanging die 17 during drawing. It has a wrinkle suppressing function.
[0014]
On the other hand, as shown in FIG. 2B, the drawing die attaching jig 21 directly attaches the holding ring 33 holding the ring-shaped opening side drawing die 19 to the lower end, and mounts the upper end to the opening side mounting base. It is configured so that it can be detachably attached to the device 20 by an attachment ring 31. Therefore, the position of the drawing height of the can body can be changed depending on the height of the mold mounting jig 21. If a plurality of mold mounting jigs 21 having different heights are prepared, the mold is provided. It is possible to easily change the drawing height by simply changing the mounting jig. When forming by drawing from the opening side, the flanging attachment jig 18 is completely removed, and an adapter 34 is attached to the lower end of the opening side center shaft body 16 as shown in FIG. . The opening side central shaft body 16 and the adapter 34 are connected via a spring 35 in a cushionable manner. Further, in that case, pressurization is applied to the inside of the can during molding and / or after the molding is completed through the air paths 36 and 37 provided in the opening side central shaft body 16 and the adapter 34 and through the flanging die 17. Air can be supplied.
[0015]
In the above configuration, the can supporting body is constituted by the flanging die 17 attached to the opening side driving body 3 and the knockout table 5 or the bottom chuck 9 attached to the bottom side driving body. An opening-side drive rod 15 slidably provided in the side driver 3 in the axial direction, or a bottom drive rod 7 slidably provided in the bottom driver 2 in the axial direction. The operation is different from the operation described above. The opening-side driving body 3 includes an opening-side driving rod 15 and an opening-side central shaft 16 that moves up and down through the center thereof. The opening-side driving rod 15 and the opening-side central shaft 16 are independent. The flanging die 17 and the drawing die can be interchangeably attached to the lower end of the drive rod 15 on the opening side. Further, the bottom-side driving body 2 includes a bottom-side driving rod 7 that is slidably driven in the axial direction, a knockout table 5 that penetrates the center thereof, and is slidably driven independently of the bottom-side driving rod. The bottom-side drawing die 8 and the bottom chuck 9 can be interchangeably attached to the bottom-side drive rod 7.
[0016]
The deformed can manufacturing apparatus of this embodiment is configured as described above, and operates as follows. First, the case of drawing from the opening side will be described with reference to FIG.
As described above, when forming by drawing from the opening side, the bottom chuck 9 is attached to the attachment pedestal 10 of the bottom drive rod 7 of the bottom drive main body 6 as shown. On the other hand, an aperture stop die 19 is attached to the pedestal of the aperture side drive shaft 15 via an attachment jig 18. A flanging die 17 is attached to the opening-side central shaft body 16.
[0017]
First, at the can carry-in position, as shown in FIG. 2A, the knockout table 5 is located at the feed level FL, and the bottom chuck 9 is at a position retracted from the feed level FL so as not to hinder the supply of cans. The opening side driving body 3 is also located above so as not to obstruct the supply of the can. In this state, when the can 50 is supplied onto the knockout table 5 located at the feed level FL by a supply device (not shown), the bottom chuck 9 is raised, and the flanging die 17 is moved into a ring-shaped opening side drawing die. 19, it descends, fits into the opening of the can, engages with the flange of the can, and clamps the can with the bottom chuck 9 (see FIG. 2B). Then, the can is lifted in synchronization with the bottom chuck 9 and the flanging die 17 in a state where the can is held between the bottom chuck 9 and the flanging die 17, so that the can is raised toward the opening side drawing die 19 and the opening side drawing die 19 is also moved. Independently, the working surface 22 of the drawing die passes outside the flange of the can body and hits the outer peripheral surface of the neck-in processing part, and in this state, the can and the opening side drawing die 19 are moved. By relatively moving in the direction of the other side, drawing (diameter reduction forming) is performed on the outer peripheral surface of the can by a drawing die (see FIG. 3C).
[0018]
At this time, the bottom chuck 9 slightly cushions the can by receiving the downward axial load by the drawing die, so that a small gap is formed between the upper end of the flange of the can body and the flanging die 17. . Since the diameter of the processed portion of the can is reduced by drawing, the force of the can body extending in the height direction acts accordingly. The axial expansion of the can is absorbed by the gap, and the load is released in the height direction in accordance with the diameter reduction, so that the can height automatically increases. For this reason, it is possible to draw well without causing wrinkles on the body surface of the can. However, when the diameter reduction amount is large, when the diameter reduction molding is performed at once, the processing amount increases, and a large load acts on the can body. Therefore, in the case of the molding method of the present invention that does not use the core, the can may buckle. Therefore, it is desirable to carry out the drawing in a plurality of steps. In this embodiment, air is supplied to the inside of the can body in order to improve the pressure resistance of the can body during diameter reduction molding. By providing the property, draw forming of a thinner can becomes possible.
[0019]
By moving the opening side drawing die 19 relatively to a predetermined position of the can body, a predetermined amount of diameter reduction molding is performed on the can body from the opening side to a predetermined height position to complete the forming (FIG. (D)). Thereafter, while the opening-side drawing die 19 is raised, the can is held down by the bottom chuck 9 and the flanging die 17 and lowered to the feed level FL, and the knockout table is raised to the feed level FL. Completely escapes from the can (see FIG. 3E). Thereafter, the flanging die 17 moves up and away from the can, and the can is discharged from the turret by an appropriate means and discharged to the next step. In the process of shifting from FIG. (D) to FIG. (E), pressurized air is blown into the can from the air passage 37 of the opening side central shaft body 16, so that the can is reliably separated from the flanging die 17. It is desirable to do so. Through the above steps, the can can be drawn well from the opening side to an arbitrary height position without wrinkles.
[0020]
Next, a process in the case of drawing from the bottom side will be described with reference to FIG. When drawing from the bottom side, a drawing die 8 is attached to the mounting base 10 of the bottom drive main body 6 instead of the bottom chuck, and a flanging die is mounted on the opening mounting base 20 instead of the opening side drawing die 19. 17 is attached.
First, at the can carry-in position, as shown in FIG. 3A, the knockout table 5 is located at the feed level FL, and the bottom drive body 6 and the opening drive body 3 are retracted to a position where they do not hinder the supply of cans. are doing. In this state, when the can 50 is supplied onto the knockout table 5 located at the feed level FL by a supply device (not shown), the flanging die 17 attached to the opening side drive rod 15 is lowered, and the flange of the can is lowered. And the can is sandwiched between the knockout table 5 and the knockout table 5 (see FIG. 3B). Next, the can is lowered toward the drawing die 8 by synchronously lowering the can while holding the can between the knockout table 5 and the flanging die 17, and the drawing die 8 is also in contact with the knockout table 8. By independently rising, the processing surface 22 of the drawing die passes outside the bottom-side grounded annular projection 52 (see FIG. 4A) of the can body and hits the inclined outer peripheral surface 53, and in that state, By relatively moving the can and the drawing die 8 in the direction of the mating side, drawing (diameter forming) is performed on the outer peripheral surface of the can (see FIG. 3C).
[0021]
At this time, the drawing die 8 applies an upward axial load to the can, the spring 30 cushions and the flanging die 17 rises slightly, and the can rises. There is a gap between them. Thereby, the extension of the can body in the axial direction in accordance with the diameter reduction is released in the height direction, and the can height is automatically increased, thereby preventing the occurrence of wrinkles due to the drawing process.
[0022]
By relatively moving the drawing die 8 to a predetermined position on the can body, a predetermined amount of diameter reduction molding is performed on the can body from the bottom side to a predetermined height position, and the forming is completed (FIG. )reference). Thereafter, when the drawing die 8 is lowered and the knockout table 5 is raised to the feed level and the flanging die 17 is raised, the drawing die is separated from the can and the flanging die 17 is separated from the can. Is released, discharged from the turret by appropriate means, and discharged to the next step (see FIG. 9E). As in the case of drawing from the flange side, in the process of shifting from FIG. (D) to FIG. (E), pressurized air is blown into the can from the air path 37 of the opening side central shaft body 16. It is desirable to ensure that the can separates from the flanging die 17. Through the above steps, the can can be drawn well from the opening side to an arbitrary height position without wrinkles.
[0023]
In the above, one process in the case of forming by drawing from the opening side and the bottom side has been described. However, in the actual manufacturing process of the deformed can, by combining those processes in a plurality of processes, the can body is not wrinkled. Various shaped cans can be formed.
[0024]
【Example】
FIG. 4 shows that a cylindrical two-piece can 50 having a body diameter of 65.87 mm shown on the left end is drawn and formed from the bottom side through four steps, and a height position of about 70% from the bottom of the can body height shown on the right end ( The drawing state of each step when drawing forming is performed so that the body part has a minimum inner diameter of 56.8 mm up to the position P0 indicated by a virtual line) is schematically shown.
[0025]
From the inner diameter of the body portion of 65.87 mm to the minimum inner diameter of the body portion of 56.8 mm, it is possible to perform the draw forming process by a single draw forming. In an extreme case, buckling occurs and molding becomes impossible. Therefore, in the present embodiment, each step has a substantially equal processing amount (however, the processing amount is reduced in the fourth step). Then, by dividing the process into four steps and gradually reducing the amount of processing per operation and gradually drawing, the drawing is gradually reduced to a small step-like (inclination) shape that is not noticeable on the can body. Molded. Accordingly, the inner diameter of the mold surface of the drawing die used in each step is also different depending on each processing amount. First, in the first step, drawing is performed from the bottom of the can to a height position P1 slightly lower than the position P0 by a drawing die 8-1 having a forming die surface having an inner diameter slightly smaller than the outer diameter of the can body. By drawing to P1, drawing is performed linearly up to P1, but is naturally bent between P0 and P1 to form an inclined surface and continues to the non-molded can body portion 55-1. Next, in a second step, the drawing is performed linearly from the bottom of the can to a height position P2 slightly lower than the position P1 by a drawing die 8-2 having a forming surface smaller in inner diameter than the drawing die 8-1. As a result, a continuous inclined surface is formed from the P0 position to the P2 position, and the drawing is performed. Thereafter, the same procedure is performed up to the fourth step. In the fourth step, up to the P4 position is linearly drawn from the bottom of the can, and a continuous inclined surface is formed between P4 and P0, and a can having the shape shown in FIG. 4F can be obtained. In the fourth step, which is the final step, the amount of processing is smaller than in the other steps in order to make the bending at the P4 position inconspicuous.
[0026]
The can obtained by drawing as described above can be drawn well without causing buckling during the working, and as shown in FIG. From the height of about 2/3 of the molded can body 55-2 whose diameter is reduced in a substantially tapered manner, and the upper part of which is a non-molded can body 55-1. Was.
[0027]
As mentioned above, although one Embodiment and Example of this invention were described, this invention is not limited to the above, and various design changes are possible within the range of the technical idea. In this specification, the axial direction of the can body is described as the vertical direction for convenience. However, the axial direction of the can body is not limited to the physical vertical direction. Is in the left-right direction. In addition, the shape of the can that is reduced in diameter by the molding method is not limited to the case where the reduced diameter cross section is always circular, and it is also possible to reduce the diameter to a polygonal shape or an elliptical shape with streaks in the axial direction of the can body. is there.
[0028]
【The invention's effect】
As described above, according to the method and apparatus for manufacturing a deformed can of the present invention, a deformed can is obtained by simply drawing the body of a bottomed seamless tubular can from the outside of the can body without using a core or the like. Since it can be molded from both the upper and lower directions of the can, it can be continuously applied to a conventional high-speed can-making line with excellent workability and without requiring expensive equipment. In addition, compared to the conventional drawing method, wrinkles can be suppressed and the diameter can be reduced favorably, and a variety of beautiful and varied cans can be manufactured. In addition, since a gap is formed between the can support and the upper or lower can support during drawing, the elongation of the can by drawing is absorbed, and the effect of suppressing the generation of wrinkles is high. Further, by mounting any of the can supports in a bufferable manner, a stroke error of the can support itself or a clamping pressure due to an error in the can body height can be effectively absorbed, and the can body can be supported at a constant pressure. it can.
[Brief description of the drawings]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a cross section of a main part of an apparatus for manufacturing a deformed can according to an embodiment of the present invention, wherein (a) shows a state of molding from the bottom side, and (b) shows a state of molding from the opening side. Is shown.
FIG. 2 shows a cross section of a main part in each step when molding from the opening side by the apparatus shown in FIG.
FIG. 3 shows a cross section of a main part in each step when molding from the bottom side by the apparatus shown in FIG. 1;
FIG. 4 is a cross-sectional view of a main part of each step of diameter reduction forming by drawing in four steps in an example.
[Explanation of symbols]
2 Bottom drive 3 Open drive
5 Knockout table 6 Bottom drive unit
7 Bottom drive rod 8 Drawing die
9 Bottom chuck 10 Mounting base
11 Knockout axis 13 Vacuum hole
15 Opening side drive rod 16 Opening side center shaft
17 Flanging die 18 Flanging die mounting jig
20 Opening side mounting base 21 Aperture mold mounting jig
22 Work surface 23, 27, 31 Mounting ring
30, 35 Spring 32 Air piping
34 Adapters 50 cans
55 deformed cans

Claims (12)

A method for manufacturing a deformed can by manufacturing a deformed can by drawing a body outer peripheral surface of a cylindrical can, wherein the can support is supported from both sides in the axial direction by a can support, and then the operation of the can support Is characterized in that a draw forming die that performs another operation is fitted into the can body and relatively slid in the axial direction to reduce the diameter by drawing to a predetermined position of the can body. How to make cans. The diameter reduction is performed in a plurality of steps by a plurality of drawing dies having different inner diameters, and the first step is performed in the first step drawing mold having the largest inner diameter from the opening side or the bottom to the position farthest in the axial direction of the can body. Draw forming, the second step is drawn by a second step draw forming die having an inner diameter smaller than that of the first step draw forming die to a position closer to the processing position in the first step, and thereafter, the draw forming is performed in order to gradually reduce the inner diameter. The method for manufacturing a deformed can according to claim 1, wherein the can is manufactured by sequentially reducing the forming distance to thereby sequentially reduce the diameter of the can along the body. The method for producing a deformed can according to claim 1, wherein the drawing can be performed from any direction above and below the can. The variant according to any one of claims 1 to 3, wherein the drawing mold has a ring-shaped hole, and one of the upper and lower sides of the can support passes through the ring-shaped hole to support the can. How to make cans. 5. The drawing process according to claim 1, wherein at the time of drawing by the drawing mold, a gap is formed between the upper and lower can supports and the can, and the gap absorbs elongation of the can by the drawing process. Method for manufacturing variant cans. The method for producing a deformed can according to any one of claims 1 to 5, wherein one of the can supports is mounted so as to be bufferable, and absorbs a stroke amount error when the can body is clamped. The method for producing a deformed can according to any one of claims 1 to 6, wherein, during drawing, air is supplied into the can to pressurize the inside of the can. An apparatus for manufacturing a deformed can which produces a deformed can by drawing an outer peripheral surface of a body portion of a cylindrical can, wherein the can support for vertically supporting the can is operated separately from the operation of the can support. A draw forming die that is fitted to the can body and relatively slides in the axial direction to reduce the diameter by drawing to a predetermined position on the can body; An apparatus for manufacturing a deformed can, comprising: a draw-forming mold driving means which slides relatively in the body axis direction. The can support includes a flanging die attached to the opening-side driving body and a knockout table or a bottom chuck attached to the bottom-side driving body. An opening-side drive rod slidably provided in the direction, or a bottom drive rod slidably provided in the bottom-side drive body in the axial direction. 9. The apparatus for manufacturing a deformed can according to claim 8, wherein a drawing die is mounted on the bottom side, and when drawing is performed from the bottom side, a drawing die is mounted on the bottom side driving rod. The opening-side driving body includes an opening-side driving rod and an opening-side central shaft that moves up and down through the center thereof, and the opening-side driving rod and the opening-side central shaft are independently vertically moved in the axial direction. 10. The apparatus for manufacturing a deformed can according to claim 9, wherein the apparatus can be driven, and a flanging die and a drawing die can be interchangeably attached to a lower end portion of the opening side drive rod. The bottom-side driving body includes a bottom-side driving rod that is slidably driven in the axial direction, and a knockout table that is slidably driven through the center of the bottom-side driving rod independently of the bottom-side driving rod, The apparatus for manufacturing a deformed can according to claim 9, wherein the drawing die and the bottom chuck can be interchangeably attached to the bottom drive rod. The apparatus for manufacturing a deformed can according to claim 10 or 11, wherein the flanging die is attached to the opening-side mounting base or the opening-side central shaft so as to be able to cushion in the axial direction.

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