JP2905618B2 - Battery can manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a battery can in a dry battery manufacturing process.

[0002]

2. Description of the Related Art In the manufacturing process of a dry battery, when manufacturing a battery can, a manufacturing device for forming a cup-shaped can base material formed by stamping and pressing a hoop material into a battery can having a smaller diameter and a longer size is used. Have been. As an apparatus for manufacturing this battery can, a rod-shaped punch inserted into a cup-shaped can base, punch driving means for moving the punch forward and backward, and a die for forming a battery can from the can base in cooperation with the punch 2. Description of the Related Art An apparatus for manufacturing a battery can including a mechanism and a plurality of claws for detaching the battery can from a punch is known.

The punch driving means has a movable portion for connecting the rear end of the punch, and the movable portion is driven by a cylinder to move the punch forward or backward. The die mechanism is formed by connecting a plurality of dies, each having a gradually decreasing inner diameter in the forward direction of the punch, and squeezing the can base during advancement of the punch, and squeezing the can base to a smaller diameter than the can base. It is configured to form a long battery can. The plurality of claws are disposed on the periphery of the front end of the die mechanism, and are biased by a compression spring in a centripetal direction.

According to the above configuration, in manufacturing a battery can, when a cup-shaped can base material is conveyed to a predetermined position,
The punch driving means advances the punch, inserts the tip of the punch into the can of the can base material, and passes through the die of the dice mechanism. At this time, since the plurality of dies gradually decrease in inner diameter in the forward direction of the punch, the can base material is squeezed and squeezed as the punch advances. For this reason, when passing through all the dies, a battery can having a smaller diameter and a longer dimension than the can base material is formed. Further, when the tip of the punch passes through the claw portion in the forward direction, a plurality of spring-urged claws slidably contact the outer peripheral surface of the battery can. The tip portion projects forward from the die mechanism. At this point, the punch starts to retract, but since the plurality of claws are urged in the centripetal direction while abutting on the outer peripheral surface of the punch, when the punch retreats, the rear end face of the battery can immediately contacts the nail. Engage. Then, the battery can closely attached to the punch is detached by the nail, and a battery can for a dry battery is obtained.

[0005]

However, in the above-mentioned conventional manufacturing apparatus, since a plurality of claws are spring-biased in the centripetal direction, the outer peripheral surface is kept on the claw portion until the battery can passes in the forward direction. The nails slide. Then, many nails in the longitudinal direction are formed on the outer peripheral surface of the battery can by the claws. Recently, battery cans have a tendency to be used without an outer casing. In such a case, not only the appearance of the battery can is impaired, but also corrosion is caused to shorten the life of the dry battery. In particular, in a battery can formed from a nickel-plated steel sheet, there is a problem that the scratches damage the plating layer and cause significant corrosion and rust.

An object of the present invention is to provide an apparatus for manufacturing a battery can that solves the above-mentioned problems and that can reliably and smoothly detach the battery can.

[0007]

According to the present invention, there is provided a rod-shaped punch into which a tip is inserted into a cup-shaped can base material conveyed to a predetermined position, and a driving means for moving the punch forward and backward. And a plurality of dies each having a gradually decreasing inner diameter in the forward direction of the punch, and a narrower battery can having a smaller diameter than the can base by narrowing the can base during advancement of the punch. A battery can manufacturing apparatus comprising: a die mechanism for forming a battery can; and a battery can releasing means for releasing the formed battery can from the punch, comprising an inner cylindrical portion and an outer cylindrical portion connected to each other at a rear end wall. A base ring in which the front end of the outer cylindrical portion projects forward from the inner cylindrical portion, and a plurality of circumferentially arranged annular spaces formed between the inner cylindrical portion and the outer cylindrical portion of the base ring. Each of the claws has a front end locking portion that is located forward of a front end of the inner cylindrical portion. Projecting in the centripetal direction, and being rotatably supported on the outer peripheral surface of the inner cylinder portion by a projection provided on the inner peripheral surface side of the intermediate portion in the front-rear direction, with the contact point of the projection as a fulcrum, and the outer cylinder portion, A plurality of springs interposed between the front end locking portions of the respective claws and biasing the front end locking portions of the respective claws in a centripetal direction, and pivotally supported by grooves provided in the outer cylinder portion A click ring having an inclined cam surface corresponding to each pawl on an inner peripheral surface, a click ring oscillating means for oscillating the click ring within a predetermined angle range, and a rear end outer peripheral surface of each pawl and the corresponding A plurality of balls interposed between the inclined cam surface and a plurality of balls held in ball holding holes provided in the outer cylindrical portion, and between a rear end surface of each of the claws and a rear end wall of the base ring. Comprising the battery can detaching means from the elastic member interposed,
When the punch passes the pawl in the forward direction, the ball is held by the inclined cam surface of the click ring, the rear end of each pawl is maintained at the centripetal position, and the front end locking portion of each pawl is attached to the battery can on the punch. When the battery can is removed by retreating to the centrifugal side position that does not contact the punch, and the battery can is released by retreating the punch, the click ring is swung, the pressing of the ball by the inclined cam surface is released, and the front end engagement of each claw is performed by the spring. The stopper is configured to be moved to a centripetal position where the stopper engages with the rear end face of the battery can on the punch.

[0008]

According to the above construction, in the manufacture of a battery can, when the cup-shaped can base material is conveyed to a predetermined position, the punch driving means advances the punch and inserts the tip of the punch into the can base. Is inserted into the dice of the dice mechanism. At this time, since the plurality of dies gradually decrease in inner diameter in the forward direction of the punch, the can base material is squeezed and squeezed as the punch advances.
For this reason, when passing through all the dies, a battery can having a smaller diameter and a longer size than the can base material is formed. When the tip of the punch moves forward and approaches the claw of the battery can detaching means, the plurality of claws are securely retracted in the centrifugal direction, and the tip of the punch is not brought into sliding contact with the outer peripheral surface of the battery can. Part through. Therefore, the outer peripheral surface of the battery can is not damaged. When the tip of the punch passes through the claw, the battery can projects forward from the die mechanism, and the punch turns backward. At this time, the battery can detaching means surely moves the nail in the centripetal direction of the punch. Then, when the tip of the punch passes in the retreating direction, the claw is securely engaged with the rear end face of the battery can, and the elastic member absorbs the shock generated at that time, so that the battery can is securely and smoothly released from the punch. Is to leave.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing an apparatus for manufacturing a battery can according to one embodiment of the present invention.

This battery can manufacturing apparatus is for forming a can base 1 formed by punching out a hoop material into a cup shape into a battery can having a smaller diameter and a longer length. ,
A punch 4, a punch driving unit 5, a die mechanism 6, and a battery can detaching means P are provided. The battery can detaching means P is provided with a claw expanding / contracting means 7, a plurality of claws 8, and the like.

The can base material transporting section 3 is configured such that a fixed plate 3a is erected on a support 9 and a guide rail 3b is fixed to the fixed plate 3a. The guide rail 3 b has an upper end connected to a can base forming section via a not-shown transport rail, while a lower end faces a can base mounting section 10 formed in the center of the support base 9. I have. The can base material transporting section 3 is provided with a feed mechanism (not shown). The can base material 1 formed by punching out a hoop material in a can base forming section and forming a cup shape is placed on the guide rail 3b. The sheet is sequentially conveyed to the section 10. The can base placing section 10 is provided with a space equivalent to the outer diameter of the can base 1, and places the opening 1a of the transported can base 1 toward the slide guide 11 side. The slide guide 11 is a slide bearing of the punch 4 and is fitted to a support 9 and a guide receiving plate 12 fixed to the support 9.

The punch 4 has a rod-like shape and has a front end 4a made of a hard material and a rear end 4b connected to a movable portion 5a to be described later.

The punch driving section 5 is for moving the punch 4 forward or backward and has a movable section 5a driven by a cylinder. Then, at the time of forward movement, the tip 4a of the punch 4 is inserted into the can of the can base material 1 and pushed into the die mechanism 6, while the punch 4 projecting forward from the die mechanism 6 after the battery can 2 is formed is retracted. It has become.

The die mechanism 6 squeezes the can base material 1 and squeezes the outer cylinder 1 fixed on a base 13.
4 inside. In the hollow portion 14a of the outer cylinder 14, five die receiving bases 15 to 19 are connected in the longitudinal direction, and each of the die receiving bases 15 to 19 has an inner diameter gradually in the forward direction of the punch 4. Are fixed, respectively. In this example, the first die 20
And the inner diameter of the fifth die 24 is 80 mm.
The inner diameters of the second to fourth dies 21 to 23 are set so as to gradually become smaller at intermediate values. The outer diameter of the can base material 1 is 100 mm and the length is also 100 mm. When the punch 4 advances, the can base material 1 is squeezed by the first die 20 and the second to fifth dies 21 to 24 are drawn.
Thus, the battery can 2 having an outer diameter of 80 mm and a length of about 250 mm is formed.

The claw expanding / contracting means 7 of the battery can detaching means P includes:
A plurality of (specifically, eight) nails 8 are operated,
It is provided with a click ring 25, a compression spring 32, a ball 36, click ring swing means, and the like. As shown in FIG. 2, a base ring 27 is joined to a die receiving base 19 provided on the front end side 14b of the outer cylinder 14.

The base ring 27 has an inner cylindrical portion 28 and an outer cylindrical portion 272 connected to each other by a rear end wall 271 so that the front end of the outer cylindrical portion 272 projects forward from the front end of the inner cylindrical portion 28. Is formed. A screw hole is provided on the outer periphery of the outer cylinder portion 272, and is fixed to the outer cylinder 14 with a fixing screw, and a small hole is formed between the inner peripheral surface 28a of the inner cylinder portion 28 and the outer peripheral surface 4c of the punch 4. A gap is created.
In the base ring 27, an annular space 29 for accommodating the claw 8 is provided between the inner cylindrical portion 28 and the outer cylindrical portion 272, and the annular space 29 has a ball holding hole 3 formed therein.
A groove 30 communicating with the click ring 25 and communicating with the click ring 25 is provided around the outer cylindrical portion 272. At the front opening position of the annular space 29, a lid 31 (which constitutes a part of the outer cylindrical portion 272) is attached to the front end of the base ring 27 main body. As shown in FIG. 3, the lid 31 is provided with eight through holes 31c corresponding to the respective claws 8 and penetrating from the outer peripheral surface 31a toward the inner peripheral surface 31b. A compression spring 32 is inserted into these through holes 31c, and a set screw 33 that locks one end of the compression spring 32 so that the spring coefficient can be adjusted is screwed.
The lid 31 is fitted to the front end of the main body of the base ring 27 as shown in FIG. 2 and attached with fixing screws.

The claws 8 are for detaching the battery can 2 from the punch 4. As shown in FIGS. 2 and 4, eight pawls 8 are provided at the peripheral edge 6a of the front end of the die mechanism 6, that is, the annular space 2 is provided.
9 are arranged in a state of being arranged in the circumferential direction. Each nail 8
As shown in FIG. 2, the front end locking portion 8a protrudes forward and centripetally from the front end of the inner cylinder portion 28, and a concave portion 8c is formed on the outer peripheral surface thereof. Face 8
d, and a projection 8e is provided on the inner peripheral surface substantially at the center in the front-rear direction. The projection 8e is connected to the inner cylinder 2
8 comes into contact with the outer peripheral surface 28b of the claw 8 and the projection 8e serves as a fulcrum.
Are rotatable. The other end of the compression spring 32 is locked in the concave portion 8c of the claw 8, and the front end locking portion 8a is biased by the compression spring 32 in the centripetal direction.
The elastic member 34 fitted in the concave portion 29a formed in the rear end wall 271 so as to be located behind the annular space 29 is in contact with the rear end side 8b of the claw 8, and the battery can 2 Absorbs the shock that is applied when the
The nail 8 is protected.

Click ring 25 of claw enlarging / reducing means 7
As shown in FIG. 4, is formed in an annular shape, is rotatably supported by the groove 30, and has a centripetal screw hole 25a in the outer peripheral portion.
The screw portion 35a of the cam lever 35 is screwed into the screw hole 25a.

The cam lever 35 is connected to the outer cylinder 1.
4 and is rotatable along a guide groove 14d formed at the upper end thereof and has a guide hole 35b at an upper end (see FIG. 1). An inclined cam surface 25b equally divided into eight is formed in the inner peripheral portion of the click ring 25, and the ball 36 held and held in the ball holding hole 361 between the click ring 25 and each of the claws 8 is formed.
Are accommodated respectively. The inner diameter of the inclined cam surface 25b gradually increases in the clockwise direction, and the maximum inner diameter portion is a concave portion 25c, and the minimum inner diameter portion is a convex portion 25d. When the cam lever 35 is at the position indicated by the solid line in FIG. 4 and the concave portion 25c is moving toward the ball 36, the front end locking portion 8a of the pawl 8 is biased in the centripetal direction by the compression spring 32. The nail 8 is kept in a reduced state (FIG. 2,
FIG. 3). On the other hand, when the cam lever 35 moves to the dashed line position in the figure, the click ring 25 rotates clockwise, and the convex portion 25d moves toward the ball 36, the contact surface 8d of the claw 8 is pressed. Then, the projection 8e rotates about the fulcrum, and the claw 8
By retracting the front end locking portion 8a in the centrifugal direction, each claw 8 is expanded in the centrifugal direction against the compression spring 32.

The motor 26 constituting the click ring oscillating means is disposed above the outer cylinder 14, and a rotary plate 26a is connected to a shaft. This rotating plate 26a
Is provided with an eccentric position pin 26b, and the eccentric position pin 26b is formed in a guide hole 35b of the cam lever 35.
When the motor 26 is driven to rotate, the cam lever 35 swings by being guided by the eccentric position pin 26b, and swings the click ring 25 within a predetermined range. The motor 26 is synchronized with the cylinder of the punch drive unit 5. When the cylinder moves the punch 4 forward and the tip 4a of the punch 4 passes through the claw 8 in the forward direction, the eccentric position pin The click ring 25 is swung via the lever 26b and the cam lever 35 to retreat the plurality of claws 8 in the centrifugal direction.
Between the inner peripheral surface 8f and the outer peripheral surface 2b of the battery can 2. When the punch 4 retreats and its tip 4a passes through the claw 8 in the retreating direction, the click ring 25 is swung in the reverse direction to move the plurality of claws 8 in the centripetal direction. The timing is set so that the front end face 8g of the front end locking portion 8a of the claw 8 is engaged with the rear end face 2a of the battery can 2.

Next, the steps of manufacturing the battery can will be described.

First, the can base material 1 formed in a cup shape by punching out a hoop material in the can base forming part is sequentially conveyed from the guide rail 3b to the can base mounting part 10.

Then, as shown in FIG. 5, the can 1 is placed with the opening 1 a of the can base 1 facing the slide guide 11. Next, the four movable parts 5a of the punch driving part 5 are driven by a cylinder, and the tip part 4a of the punch 4 is inserted into the can of the can base material 1 and pushed into the die mechanism 6 at the time of forward movement. Then, when the punch 4 passes through the first die 20, the can base material 1 is squeezed, and the outer diameter of the can base material 1 becomes small as shown in the figure. Subsequently, when the punch 4 advances, the can base material 1
It is squeezed by the second to fifth dies 21 to 24.
Therefore, when passing through all the dies 20 to 24, the battery can 2 having a smaller diameter and a longer size than the can base material 1 is formed.

At this time, the motor 26 is rotationally driven in conjunction with the cylinder, but when the cam lever 35 moves from the chain line position in FIG. 6 to the solid line position, the click ring 25 rotates clockwise as indicated by an arrow. The ball 36 presses the contact surface 8d of the claw 8 to expand the plurality of claws 8,
As shown in FIG. 7, the inner peripheral surface 8f of the claw 8 and the outer peripheral surface 2b of the battery can 2
To create a gap between Therefore, the claw 8 does not slide on the outer peripheral surface 2b of the battery can 2 and the tip 4a of the punch 4
And the battery can 2 passes through the claw 8 part. Therefore, battery can 2
The outer peripheral surface 2b is not damaged.

When the tip 4a of the punch 4 passes through the claw 8, as shown in FIG. 1, the battery can 2 projects from the front edge 6a of the die mechanism 6, ie, from the front end 14b of the outer cylinder 14. , And the punch 4 turns back. At this time, the cam lever 35 is guided by the eccentric position pin 26b.
Moves from the chain line position to the solid line position in FIG. 4, the click ring 25 swings counterclockwise, and the compression spring 32 causes the claw 8 to move.
The front end locking portion 8a is spring-biased in the centripetal direction, and the plurality of claws 8 are reduced. Then, the inner peripheral surface 8f of the claw 8 slides on the outer peripheral surface 4c of the punch 4 and the front end surface 8g of the claw 8 engages with the rear end surface 2a of the battery can 2, so that the battery can 2 is detached from the punch 4. . At this time, the rear end portion 8b of the claw 8 comes into contact with the elastic member 34 fitted in the concave portion 29a of the annular space 29, so that the impact applied when the battery can 2 is detached from the punch 4 is absorbed and Claw 8 is protected.

The battery can 2 obtained as described above has a cylindrical shape, the outer peripheral surface 2b and the inner peripheral surface 2c are smooth surfaces, and are formed to have the same thickness. The battery can 2 is filled with, for example, a mixture, forms electrodes, and then forms an alkali-manganese dry battery or the like by caulking a sealing opening.

FIG. 8 is a longitudinal sectional view of a battery can manufacturing apparatus showing a reference example not belonging to the present invention.

The apparatus for manufacturing a battery can includes a claw expanding / contracting means 37
Is operated by high-pressure air, and the basic configuration is substantially the same as that of the above-described embodiment. Therefore, detailed description of the same portions will be omitted.

The claw expanding / contracting means 37 includes a base ring 38
The driving member 40 is accommodated in the hollow hole 39 provided at the front end of the die mechanism 6 so as to be able to advance and retreat.
The configuration is such that the individual claws 41 are operated to expand and contract. The driving member 40 has annular concave portions provided on an outer peripheral surface 40a and an inner peripheral surface 40b, and has seal rings 42 and 43 respectively mounted thereon. A plurality of recesses 40 c are formed in the longitudinal direction of the driving member 40, and a resilient spring 44 is interposed between the recess 40 c and the inner wall of the holding cylinder 46, so that the driving member 40 has a punch 4. In the same direction as the forward direction. The rear end of the driving member 40 is an annular projection 40d having a tapered surface. An annular concave space 40f is provided at the front end 40e of the driving member 40, and a closed space is formed between the concave space 40f and the front side of the hollow hole 39.

The concave space 40f has an air introduction hole 40g.
And, it communicates with the air supply pipe 45 through a communication hole 38 a provided in the base ring 38. This air supply pipe 45
Is connected to an air compressor (not shown). In this air compressor, the supply of high-pressure air is controlled by the control unit, and the high-pressure air that exceeds the spring force of the resilient spring 44 is supplied to advance the driving member 40 to the right in FIG. It expands in the centrifugal direction.

The claw 41 is provided with a claw housing 47 formed on an inner peripheral portion of a holding cylinder 46 connected to the base ring 38.
, Which are rotatable about the inner edge 47a of the claw storage portion 47 as a fulcrum. In addition, concave portions 41 a are provided on the outer peripheral surface of the claw 41, and the concave portions 41 a and the outer peripheral surface 46 a of the holding cylinder 46 are separated from the inner peripheral surface 46 a.
A compression spring 48 is inserted between the eight through-holes 46c formed toward “b” and biases the claws 41 in the centripetal direction to keep the claws 41 in a reduced state. Further, a concave groove 41b having a tapered surface is formed at a front end portion of the claw 41, and the annular convex portion 40 of the driving member 40 is formed in the concave groove 41b.
When d is fitted, the pawl 41 expands in the centrifugal direction to form a gap between the inner peripheral surface 41c of the pawl 41 and the outer peripheral surface 2b of the battery can 2.

In the battery can manufacturing apparatus described above, the operating time of the cylinder of the punch driving unit 5 and the timing of sending high-pressure air are matched. When 4a passes through the pawl 41 in the forward direction, the control unit feeds air from the air compressor to advance the drive member 40, and retracts the pawl 41 in the centrifugal direction. Thereby, the outer peripheral surface 2b of the battery can 2
Since the tip portion 4a of the punch 4 passes through the claw 41 without the claw 41 sliding on the claw 41, the outer peripheral surface 2b of the battery can 2 is not damaged. On the other hand, when the punch 4 turns backward and its tip 4a passes through the claw 41 in the backward direction,
The supply of air is stopped and the air is released. Then, while the drive member 40 is retracted by the elastic spring 44,
The plurality of claws 41 are moved in a centripetal direction by a compression spring 47. Thereby, the nail 4 is attached to the rear end face 2a of the battery can 2.
Since the front end face 41 d of the battery can 2 is engaged, the battery can 2 is detached from the punch 4.

[0034]

As described above, according to the present invention, when the tip of the punch advances and approaches the claw provided on the battery can detaching means, the plurality of claws are reliably retracted in the centrifugal direction. ,
Since the tip of the punch is allowed to pass through without contacting the nail with the outer peripheral surface of the battery can, a problem that the outer peripheral surface of the battery can is damaged can be avoided. Therefore, the aesthetic appearance when the dry battery is used without the exterior is maintained, and the problem of causing corrosion and shortening the life of the dry battery is eliminated. In particular, a battery can formed from a nickel-plated steel plate has the effect of preventing the problem that the plating layer is damaged by the scratches and causes corrosion and rust. Further, according to the present invention, when the punch is retracted, the battery can detaching means can surely move the claw in the centripetal direction of the punch, and the claw is securely engaged with the rear end face of the battery can, and this occurs at that time. Since the impact is absorbed by the elastic member, the detachment of the battery can from the punch can be made sure and smooth.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an apparatus for manufacturing a battery can according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a cross-sectional view of the nail enlarging / reducing means along the line AA in FIG. 2;

FIG. 4 is a cross-sectional view of the claw enlarging / reducing means along the line BB in FIG. 2;

FIG. 5 is an operation explanatory view showing a state of forming a battery can.

FIG. 6 is an explanatory diagram of the operation of the claw enlarging / reducing means.

FIG. 7 is an operation explanatory view showing a retracted state of the claw.

FIG. 8 is a longitudinal sectional view of a main part of a battery can manufacturing apparatus showing a reference example of the present invention.

[Description of Signs] 1 Can base material 2 Battery can 4 Punch 5 Driving means 6 Dice mechanism 7 Claw expanding / contracting means 8 Claw 20 to 24 Dice

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-180058 (JP, A) JP-A-2-165821 (JP, A) JP-A-60-82235 (JP, A) 133 (JP, B2) Jikken Sho 54-26352 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) H01M 2/02 B21D 22/28

Claims (1)

(57) [Claims] 1. A rod-shaped punch whose tip is inserted into a can of a cup-shaped can base material conveyed to a predetermined position,
Driving means for moving the punch forward and backward, and a plurality of dies whose inner diameter gradually decreases in the forward direction of the punch are connected in series. A dice mechanism that forms a long battery can with a small diameter;
An apparatus for manufacturing a battery can, comprising: a battery can detaching means for detaching the formed battery can from the punch; comprising an inner tubular part and an outer tubular part connected to each other at a rear end wall, wherein the front end of the outer tubular part is A base ring protruding forward from the inner cylindrical portion; and a plurality of claws circumferentially arranged in an annular space formed between the inner cylindrical portion and the outer cylindrical portion of the base ring. The front end locking portion protrudes forward and centripetally from the front end of the inner cylinder portion, and the projection provided on the inner peripheral surface side of the middle portion in the front-rear direction turns the outer cylinder outer peripheral surface around the contact point of the projection as a fulcrum. Movably supported, a plurality of springs interposed between the outer cylinder portion and the front end locking portion of each claw, and biasing the front end locking portion of each claw in a centripetal direction; A click provided with an inclined cam surface corresponding to each pawl on an inner peripheral surface, which is supported by a groove provided in the outer cylindrical portion and rotates. A ring, a click ring oscillating means for oscillating the click ring within a predetermined angle range, and interposed between the outer peripheral surface of the rear end of each claw and the corresponding inclined cam surface. A plurality of balls held in the provided ball holding holes, and an elastic member interposed between a rear end surface of each of the claws and a rear end wall of the base ring, constituting the battery can detaching means, When the punch passes the pawl in the forward direction, the ball is held by the inclined cam surface of the click ring, the rear end of each pawl is maintained at the centripetal position, and the front end locking portion of each pawl is attached to the battery can on the punch. When the battery can is removed by retreating to the centrifugal side position that does not contact the punch, and the battery can is released by retreating the punch, the click ring is swung, the pressing of the ball by the inclined cam surface is released, and the front end engagement of each claw is performed by the spring. Attach the stop to the rear end of the battery can on the punch. An apparatus for manufacturing a battery can, wherein the apparatus is configured to be moved to a centripetal side position where it fits.