JP2005329423A - Apparatus for manufacturing bottle can - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve production efficiency while keeping the working accuracy of a bottle can excellently in a bottle can manufacturing apparatus. <P>SOLUTION: This apparatus is provided with a work supporting disk 3 for supporting a work and a tool supporting disk 4 for supporting a plurality of working tools 6 for working the work and has a drawing tool 6A with which the working is performed by the approaching action to the work and a rotary tool 6B with which the working is performed by the rotational action to the work. The drawing tool supporting part 4A of the tool supporting disk 4 and the opposed part 3A of the drawing tool of the work supporting disk 3 are approached and separated by using a drawing tool driving system 10A and also the rotary tool supporting part 4B of the tool supporting disk 4 and the opposed part 3B of the rotary tool of the work supporting disk 3 are approached and separated by using a rotary tool driving system 10B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bottle can manufacturing apparatus for manufacturing a metal bottle can for beverages.

Conventionally, as a bottle can manufacturing apparatus for manufacturing a metal bottle can (hereinafter simply referred to as a bottle can), for example, those described in Patent Documents 1 and 2 are known. This is because the work support base that supports the bottomed cylindrical work and the tool support base that supports multiple processing tools for work processing are placed opposite to each other, and these can be moved close to and away from each other by a drive unit using a crank mechanism. And each workpiece is moved close to and away from each other and processed into a workpiece placed between them. The plurality of machining tools are arranged in the order of machining on the workpiece, and the workpiece can be moved to a machining position by the next machining tool for each stroke in which each table approaches and separates. Then, the workpiece is sequentially processed by repeating the stroke of each table and the movement of the workpiece, and a bottle can having a predetermined shape is completed when a series of processing is completed.
JP 2003-290855 A JP 2003-251424 A

By the way, in the machining tool, in addition to the drawing tool for reducing the diameter of the upper part of the work by the approaching operation in the axial direction to the work and the drawing tool for performing the ironing process, the respective tables are within a predetermined range. A rotating tool is provided that performs trimming of the tip of the workpiece, screw forming processing, and the like by a rotating operation centered on the axis of the workpiece when in the close state. This rotary tool has a narrow stroke range (predetermined range) that can be processed on the workpiece as compared with the drawing tool. Therefore, in order to keep the processing accuracy good, the time per stroke of each unit (the drive device) The angular speed of the crankshaft) is set to be long in order to secure the minimum machining time by the rotary tool. However, in order to further improve the production efficiency of bottle cans, improvement of this point is being demanded.
The present invention has been made in view of the above circumstances, and an object of the present invention is to improve production efficiency while maintaining good processing accuracy of a bottle can in a bottle can manufacturing apparatus.

  As a means for solving the above-mentioned problems, the invention described in claim 1 includes a workpiece support base that supports a bottomed cylindrical workpiece, a plurality of machining tools for machining the workpiece, the workpiece support base, and an axis of the workpiece. In a bottle can manufacturing apparatus that includes a tool support table that is arranged to face each other in the direction, and that makes each of these tables close to and away from each other in the axial direction of the workpiece and performs processing on the workpiece that is arranged between them, as the processing tool, An aperture tool for machining the workpiece by an approaching operation in the axial direction to the workpiece, and the workpiece by a rotation operation centered on the axis to the workpiece when each of the stands is close to a predetermined range. A rotary tool for processing the aperture tool, an aperture tool support portion for supporting the aperture tool of the tool support base, and an aperture tool facing the aperture tool of the work support base And a rotary tool support portion for supporting the rotary tool of the tool support base and a rotary tool facing portion of the work support base facing the rotary tool. The rotary tool drive device is used to make the proximity and separation.

  According to this configuration, when processing the workpiece with the squeezing tool and the rotary tool, the squeezing tool support part and the squeezing tool opposing part are used by using the squeezing tool driving device, and the rotary tool support part and the rotary tool are opposed to each other. Using the rotary tool drive device, the parts can be moved close to and away from each other in individual patterns.

  Here, without extending the time per stroke when the rotating tool support part and the rotating tool opposing part approach and separate from each other, only the processing time for the work by the rotating tool is extended, that is, the processing time for the work by the rotating tool. In order to reduce the time per stroke while maintaining the same as the conventional method, within the predetermined range in which the rotary tool support portion and the rotary tool facing portion can perform processing with the rotary tool during the stroke. It is sufficient to extend the time in the state of being close to each other and shorten the time in which the rotary tool support portion and the rotary tool facing portion are separated to outside the predetermined range.

At this time, the relative displacement acceleration between the rotary tool support part and the rotary tool facing part will be biased, but the weight mass of the object is small compared to the case where the entire table is relatively displaced. The burden on the equipment is small.
It should be noted that the proximity and separation between the squeezing tool support portion and the squeezing tool facing portion may be smoothly performed so that the relative displacement acceleration is not biased.

  According to the first aspect of the present invention, it is possible to reduce the time per stroke of each unit while suppressing the burden on each driving device and making the processing time of the workpiece by the rotary tool equivalent to the conventional one. It is possible to improve production efficiency while maintaining good processing accuracy of the bottle can.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as the directions in the installed state of the apparatus unless otherwise specified.

  As shown in FIGS. 1 and 2, a bottle can manufacturing apparatus 1 includes a work support disk (work support disk) 3 provided on one side of a frame 2 so as to be rotatable about a substantially horizontal rotation axis C, and the work A tool support disk (tool support disk) 4 disposed opposite to the workpiece support disk 3 is provided at a portion opposite to the frame 2 of the support disk 3.

  A number of holders 5 that can hold the bottom side of the bottomed cylindrical workpiece W are arranged on the outer periphery of the workpiece support disc 3 on the tool support disc 4 side. The workpieces W held by the holders 5 are arranged so that their axes are parallel to the axes of the disks 3 and 4 (the rotation axis C). The work support disk 3 can be rotated intermittently counterclockwise in FIG. 1 (indicated by an arrow F in FIG. 1) together with the holder 5 and the work W held by the holder 5 by a rotation driving device (not shown). is there.

  On the other hand, on the outer periphery of the tool support disk 4 on the work support disk 3 side, a large number of processing tools 6 provided to be paired with the respective holders 5 are arranged. The tool support disk 4 is configured to be able to approach and separate from the work support disk 3 in its axial direction (the axial direction of the work W held by the work support disk 3). Thus, the workpiece W arranged between them is processed.

  The respective processing tools 6 are arranged in the order of processing to the workpiece W, and the workpiece holder 5 is rotated by a predetermined amount each time each of the disks 3 and 4 approaches and separates, whereby each workpiece W is moved by the next processing tool 6. Move to machining position. Then, by repeating the stroke of each of the disks 3 and 4 and the movement of the workpiece W, the workpiece W is sequentially processed, and when a series of processing is completed, a bottle can having a predetermined shape is completed. The can is discharged from the discharge device 8 shown in FIG. 1 and supplied to the subsequent process. Reference numeral 7 denotes a supply device for supplying the workpiece W to the workpiece support disk 3.

  Here, the bottle can will be described with reference to FIG. 4. The bottle can is used to enclose a beverage, and is made of a metal plate such as an aluminum alloy. In forming this bottle can, first, a metal plate is formed into a bottomed cylindrical shape to form a workpiece W shown in FIG. 4A, and this workpiece W is supplied to the bottle can manufacturing apparatus 1 as described above. Processing to the workpiece W is performed sequentially.

  Specifically, the opening side of the workpiece W is gradually drawn and ironed to form a base part W2 having a diameter reduced with respect to the can body part W1, as shown in FIG. 4B. At this point, trimming processing is performed to align the height (length) of the base part W2. Next, the base portion W2 is once expanded in diameter to become an expanded diameter portion W3, and a screw portion W4 is formed around the expanded diameter portion W3 as shown in FIG. 4 (d).

Further, as shown in FIG. 4 (e), after the tip end of the base part W2 is folded outward to form the curled part W5, as shown in FIG. 4 (f), the curled caulking is formed by crushing the curled part W5. Part W6 is formed.
The bottle can thus completed is filled with contents such as beverages, and a cap (not shown) is screwed onto the screw portion W4 to seal the opening of the cap portion W2, thereby completing the commercialization.

  As shown in FIG. 1, the processing tools 6 that perform the above-described processing are sequentially arranged from the upstream side to the downstream side in the rotation direction of the work support disk 3 in the tool support disk 4. That is, the drawing tools 6A as a plurality of diameter reducing machines that perform drawing and ironing are sequentially arranged on the work W, and the trimmer machine that performs trimming and the base W2 are expanded in diameter on the downstream side thereof. A rotary tool 6B such as a diameter expanding machine, a screw forming machine for forming the screw part W4, a curling machine for forming the curled part W5, and a slot machine for forming the curled caulking part W6 are sequentially arranged.

  The aperture tool 6A performs processing on the workpiece W by an approaching operation in the axial direction to the workpiece W. Further, the rotary tool 6B performs processing on the workpiece W by rotating operation around the axis of the workpiece W when the disks 3 and 4 are close to each other within a predetermined range. Here, the stroke range (the predetermined range) in which the rotary tool 6B can process the workpiece W is narrower than the stroke range in which the aperture tool 6A can process the workpiece W.

  As shown in FIG. 3, a tool support disk 4 has a portion that supports the squeezing tool 6A as a squeezing tool support portion 4A, and a portion that supports the rotary tool 6B in the tool support disc 4 is a rotary tool support portion 4B. The disk 4 is divided into a squeezing tool support 4A and a rotary tool support 4B.

  Here, if the part of the work support disk 3 facing the squeezing tool 6A is the squeezing tool facing part 3A and the part of the work support disk 3 facing the rotating tool 6B is the rotating tool facing part 3B, the squeezing tool supporting part 4A The squeezing tool facing portion 3A is configured to be able to approach and separate using the squeezing tool driving device 10A, and the rotating tool support portion 4B and the rotating tool facing portion 3B can be approached to and separated from each other using the rotating tool driving device 10B. It is configured.

  The aperture tool drive device 10A has a motor 11A as a drive source, a clutch and brake 13A to which a driving force from the motor 11A is input via a belt 12A, and a constant torque output from the clutch and brake 13A. A reduction gear pair 14A for reducing the generated driving force, a crankshaft 16A connected to the output side of the reduction gear pair 14A, and a connecting shaft 18A connected to the crankshaft 16A via a connecting rod 17A. It will be.

The connecting shaft 18A is disposed on the axis of each of the disks 3 and 4, and one side thereof penetrates the frame 2 and the work support disk 3 and is supported so as to be movable in the direction of the axis. Further, the end of the connecting shaft 18A protruding from the frame 2 and the workpiece support disk 3 is integrally coupled to the center of the tool support disk 4 (the center of the aperture tool support 4A).
Then, the crank mechanism 20A composed of the crankshaft 16A, the connecting rod 17A, and the connecting shaft 18A converts the rotational motion by the motor 11A into the reciprocating linear motion of the connecting shaft 18A, and the drawing tool support portion 4A is moved to the work support disk 3. The aperture tool facing portion 3A is close to and away from the aperture tool facing portion 3A.

  On the other hand, the rotary tool drive device 10B includes a motor 11B as a drive source, a cam drum 12B connected to a drive shaft of the motor 11B, and a rotational drive from the vicinity of the cam drum 12B to the outer peripheral side of the work support disk 3. The connecting shaft 18B is connected to the rotating tool support 4B so as to extend and avoid the rotating tool 6B. The connecting shaft 18B is provided in parallel with the axis of each of the disks 3 and 4, and is supported by a support frame 2B provided on the outer peripheral side of the frame 2 so as to be movable in the axial direction.

On the outer periphery of the cam drum 12B, a flange-shaped cam 13B that forms a predetermined cam pattern is continuously provided over the entire periphery. On the other hand, a pair of cam followers 14B arranged so as to sandwich the cam 13B in the axial direction of the connecting shaft 18B is provided at a portion of the connecting shaft 18B adjacent to the cam drum 12B.
By the cam mechanism 20B composed of the cam drum 12B and the connecting shaft 18B, the rotary motion by the motor 11B is converted into the reciprocating linear motion of the connecting shaft 18B, and the rotary tool support portion 4B is moved to the rotary tool facing portion 3B of the work support disc 3. On the other hand, they come close to and away from each other.

The bottle can manufacturing apparatus 1 in the above embodiment supports a workpiece support disk 3 that supports a bottomed cylindrical workpiece W, and a plurality of processing tools 6 for processing the workpiece W, and includes the workpiece support disk 3 and the workpiece W. A tool support disk 4 arranged opposite to each other in the axial direction is provided, and each of the disks 3 and 4 is moved close to and away from each other in the axial direction of the work W to process the work W disposed therebetween.
Further, the bottle can manufacturing apparatus 1 includes, as the processing tool 6, a drawing tool 6A for processing the workpiece W by an approaching operation in the axial direction to the workpiece W, and the disks 3 and 4 within a predetermined range. A rotating tool 6B that performs processing on the workpiece W by a rotating operation centered on the axis of the workpiece W when in the close state.

  Then, the bottle can manufacturing apparatus 1 includes a squeezing tool support part 4A for supporting the squeezing tool 6A of the tool support disk 4 and a squeezing tool facing part 3A facing the squeezing tool 6A of the work support disk 3. The drawing tool drive device 10 </ b> A is used to approach and separate the rotating tool support 4 </ b> B that supports the rotating tool 6 </ b> B of the tool support disk 4 and the rotating tool that faces the rotating tool 6 </ b> B of the work support disk 3. The unit 3B is configured to approach and separate using the rotary tool drive device 10B.

  According to this configuration, when processing the workpiece W by the squeezing tool 6A and the rotating tool 6B, the squeezing tool support unit 4A and the squeezing tool opposing unit 3A are used by using the squeezing tool driving device 10A and the rotating tool. The support portion 4B and the rotary tool facing portion 3B can be brought close to and away from each other in individual patterns using the rotary tool drive device 10B.

  Specifically, the close / separation between the squeezing tool support 4A and the squeezing tool facing part 3A is performed while changing the displacement amount of the squeezing tool support 4A relative to the input rotation angle to the crankshaft 16A so as to follow the sine curve. The proximity and separation between the rotary tool support portion 4B and the rotary tool facing portion 3B can be performed while changing the displacement amount of the rotary tool support portion 4B along a desired cam pattern.

  Here, without extending the time per stroke in which the rotary tool support portion 4B and the rotary tool facing portion 3B come close to and away from each other, only the processing time for the workpiece W by the rotary tool 6B is extended, that is, by the rotary tool 6B. In order to reduce the time per stroke while making the processing time for the workpiece W equivalent to the conventional time, the rotary tool support portion 4B and the rotary tool facing portion 3B are processed by the rotary tool 6B during the stroke. So that the time in which the rotary tool support portion 4B and the rotary tool facing portion 3B are separated from each other outside the predetermined range is shortened. do it.

  At this time, the displacement acceleration of the rotary tool support 4B is biased, but the weight mass of the object is small compared to the case where the entire tool support disk 4 is displaced. The burden of is small.

  As the time per stroke is shortened, the processing time by the drawing tool 6A is slightly reduced, but the stroke range that can be processed by the drawing tool 6A is the stroke range that can be processed by the rotary tool 6B. However, the minimum processing time by the drawing tool 6A cannot be secured. Therefore, the proximity / separation between the squeezing tool support portion 4A and the squeezing tool facing portion 3A may be smoothly performed by, for example, the sine curve so that the displacement acceleration of the squeezing tool support portion 4A is not biased.

  For this reason, it is possible to improve the production efficiency while maintaining good processing accuracy of the bottle can. In particular, even if the displacement acceleration of the rotary tool support 4B is biased, the weight mass is small, so that the burden on the rotary tool drive device 10B can be suppressed, and the aperture tool support 4A can be brought close smoothly. By separating, it is possible to reduce the burden on the aperture tool drive device.

The present invention is not limited to the above-described embodiment. For example, the work support disk 3 is divided into a squeezing tool facing part 3A and a rotating tool facing part 3B. At least one of the part 3A may be configured to be close to and away from the other, and at least one of the rotary tool support part 4B and the rotary tool facing part 3B may be configured to be close to and away from the other. Similarly, at least one of the workpiece support disk 3 and the tool support disk 4 may be configured to be rotatable about the rotation axis C.
Further, each of the motors 11A and 11B may be configured as a servo motor capable of changing the angular velocity of the drive shaft.
Further, the driving force from the motor 11A of the aperture tool driving device 10A can be transmitted to the cam drum 12B of the rotating tool driving device 10B via a propeller shaft or the like, thereby eliminating the motor 10B. .
The configurations in the above embodiments are merely examples, and it goes without saying that various modifications can be made without departing from the scope of the invention.

It is a front view of the bottle can manufacturing apparatus in the Example of this invention. It is a side view of the said bottle can manufacturing apparatus. It is upper surface explanatory drawing which shows the structure of the drive device of the said bottle can manufacturing apparatus. It is explanatory drawing which shows the manufacturing process of a bottle can.

Explanation of symbols

1 Bottle can manufacturing equipment 3 Work support disk (work support stand)
3A Aperture tool facing part 3B Rotating tool facing part 4 Tool support disk (tool support base)
4A Drawing tool support section 4B Rotating tool support section 6 Processing tool 6A Drawing tool 6B Rotating tool 10A Drawing tool drive 10B Rotating tool drive W Workpiece

Claims (1)

A workpiece support table for supporting a cylindrical work with a bottom; and a tool support table for supporting a plurality of machining tools for machining the workpiece and arranged to face the workpiece support table in the axial direction of the workpiece. In a bottle can manufacturing apparatus that performs processing on a workpiece arranged between them by moving them close to and away from each other in the axial direction of the workpiece,
As the processing tool, a drawing tool that performs processing on the workpiece by an approach operation in the axial direction to the workpiece, and the axis to the workpiece when the respective stands are close to a predetermined range. A rotating tool for processing the workpiece by rotating operation,
An aperture tool support portion that supports the aperture tool of the tool support base and an aperture tool facing portion that faces the aperture tool of the work support base are brought close to and away from each other using an aperture tool drive device, and
The rotating tool support portion that supports the rotating tool of the tool support table and the rotating tool facing portion that faces the rotating tool of the work support table are moved close to and away from each other using a rotating tool driving device. Bottle can manufacturing equipment.

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