JPWO2004110665A1 - Drilling device, punching die, punching method and positioning fixing method for punching die - Google Patents

Abstract

A punching mechanism 800 having a punching die 810 including a punching die 820 and a die die 830 for punching a sheet-like workpiece W, a punching die 820, and a die die 830 A punching device 100 provided with a means for applying tension to a sheet-like workpiece W interposed between the punching die 820 and the punching mechanism 800 comprising a punching die 820, a die die 830, Is a drilling mechanism that performs drilling in a state where the gap G between the two is larger than the thickness of the sheet-like workpiece W. For this reason, the punching apparatus 100 of the present invention can reduce the cost and simplify the mold structure, can improve the reliability in quality, and can easily speed up the drilling. It becomes a punching device.

Description

  The present invention relates to a perforation apparatus, a perforation mold, a perforation method, and a positioning and fixing method for a perforation mold suitable for use in perforating a sheet-like workpiece.

For example, in order to punch a workpiece such as a metal sheet, a printed circuit board, or a flexible substrate, the workpiece is interposed between a punch die and a die die, and the punch die is punched. This is done by fitting into the die hole of the die mold.
Conventionally, a drilling device as shown in FIG. 14 is used for drilling a workpiece of this type (see, for example, Patent Document 1).
This punching device will be described with reference to FIG. 14. The punching device 1 includes a punch die 2 and a die die 3.

  As shown in FIG. 14A, the punch die 2 has a backing plate 4, a punch plate 5, and a stripper 6, and is disposed at the lower end portion of the guide plate 7 via an attachment plate 8. . And it is comprised so that it may raise / lower with the guide plate 7 and the mounting plate 8 by the drive of a raising / lowering mechanism (not shown). The backing plate 4 is fixed to the guide plate 7 via the mounting plate 8. The punch plate 5 has a punch 5 a through which the stripper 6 can be inserted, and is fixed to the backing plate 4. The stripper 6 has a protruding portion 6 a and is disposed below the punch plate 5 so as to be able to move up and down.

  The guide plate 7 is connected to an elevating mechanism (not shown) via a guide shaft 9. The mounting plate 8 is provided with a spring accommodating hole 8 a for accommodating the compression spring 10. A stripper guide pin 11 for inserting the backing plate 4 and the punch plate 5 is attached to the lower end of the compression spring 10. A stripper 6 is attached to the tip of the stripper guide pin 11.

  On the other hand, the die mold 3 has a die plate 12 as shown in FIG. 14B and is disposed below the punch mold 2. The die plate 12 is provided with a die hole 12a into which the punch 5a can be fitted.

In order to perform drilling on a workpiece using the drilling device 1 configured as described above, after placing a workpiece (not shown) on the die plate 12 of the die 3 for die, in advance. This is performed by lowering the punching die 2 arranged at the upper standby position.
In this case, when the punch die 2 is lowered, the protruding portion 6 a of the stripper 6 comes into contact with the workpiece on the die plate 12. When the punching die 2 is further lowered from this state, the protruding portion 6a of the stripper 6 presses the workpiece onto the die plate 12. For this reason, the punch 5a protrudes downward from the die plate 12 with the stripper 6 in pressure contact with the workpiece on the die plate 12, and is fitted into the die hole 12a, so that the workpiece is punched.
When the punch die 2 is lifted, the punch 5a is removed from the workpiece die hole 12a while the stripper 6 is kept in pressure contact with the workpiece on the die plate 12. Therefore, smooth punching is performed. Operation is realized.
JP 2002-263750 A (FIG. 6)

By the way, in the above drilling apparatus, since a stripper is required to smoothly drill the workpiece, not only the number of parts is increased and the cost is increased, but also the mold structure is complicated. there were.
Moreover, since the stripper presses the workpiece against the die plate during drilling, there is a problem that the workpiece is easily damaged and the reliability in quality is lowered.
Moreover, since it is necessary to move up and down the entire punching die at the time of drilling, there is a problem that it is not easy to speed up drilling.

The present invention has been made to solve such a problem, and can reduce the cost and simplify the mold structure, improve the reliability of the quality, and further perform perforation. It is an object of the present invention to provide a drilling device, a drilling die, and a drilling method that can be easily increased in speed.
It is another object of the present invention to provide a method for positioning and fixing a punching die that can simplify the positioning operation of the punching die.

(1) A punching device according to the present invention includes a punching mechanism having a punching die for punching a sheet-shaped workpiece and a die for punching, and the punching die, A punching device comprising means for applying tension to a sheet-like workpiece interposed between the die mold and the punching mechanism comprising: a punch mold and a die mold; It is a drilling mechanism which performs a drilling in the state where the space | gap between these is larger than the thickness of a sheet-like workpiece.

For this reason, according to the punching device of the present invention, the punching operation is performed in a state where tension is applied to the workpiece interposed between the punching die and the die die. Deflection of the workpiece is effectively suppressed, and as a result, a punching operation is performed at a correct angle with respect to the workpiece, and the punch can be smoothly removed from the workpiece. For this reason, it is possible to perform perforation in a state where the gap between the punch die and the die die is larger than the thickness of the sheet-like workpiece. That is, the stripper that has been conventionally required can be eliminated. Therefore, according to the punching device of the present invention, the number of parts can be reduced, the cost can be reduced, and the mold structure can be simplified.
Further, since the drilling is performed in a state where the workpiece is in a non-pressed state, occurrence of damage to the workpiece can be surely suppressed, and reliability in quality can be improved.
These effects are obtained when the punching device is a punching device provided with a feeding mechanism for feeding a roll-like workpiece into a sheet and a winding mechanism for winding the sheet-like workpiece into a roll. , Especially large.
In addition, since the punching is performed in a state where the gap between the punching die and the die die is larger than the thickness of the sheet-like workpiece, the punching die itself does not need to be moved up and down at the time of punching. Since only the punch needs to be raised and lowered, it is easy to speed up the drilling.

(2) In the punching apparatus according to (1), the punching mechanism performs the punching in a state where the gap between the punching die and the die die is 0.10 mm to 5.0 mm. It is preferable.
Here, the reason why the gap is set to 0.10 mm or more is that if the gap is less than 0.10 mm, a relatively thick workpiece may not be drilled. From this point of view, the gap is more preferably 0.20 mm or more, and further preferably 0.30 mm or more. The reason why the gap is set to 5.0 mm or less is that if the gap exceeds 5.0 mm, it is not easy to ensure the positional accuracy between the tip of the punch and the die hole. This is because it is not easy to maintain straightness. From this point of view, the gap is more preferably 3.0 mm or less, and further preferably 2.0 mm or less.

(3) In the punching device according to (1) or (2), the punching mechanism performs punching without a guide pin interposed between the punching die and the die die. It is preferable.
By constructing in this way, it becomes possible to place a large-area workpiece between the punch mold and the die mold, so that a large-area workpiece is drilled. Will be able to.

(4) In the perforating apparatus according to any one of (1) to (3), two upper and lower roll shafts for sandwiching a sheet-like workpiece are provided on both sides of the processing area. It is preferable that
By comprising in this way, the bending of a sheet-like workpiece is suppressed more effectively.
This effect is obtained when the punching device is a punching device including a feeding mechanism for feeding a roll-like workpiece into a sheet and a winding mechanism for winding the sheet-like workpiece into a roll. As in the case of (1), it becomes particularly large.

(5) A punching device of the present invention includes a punching mechanism having a punching die including a punching die and a die for punching a sheet-like workpiece, and a punching die for the punching device. A punching device including a punching die positioning and fixing mechanism for positioning and fixing the punching die on a die attaching portion, wherein the punching die positioning and fixing mechanism is at least 2 movable in the vertical direction. There are two positioning pins, the punching die mounting portion is provided with pin positioning holes for fitting the positioning pins, and the positioning pins can be inserted into the die die. A pin insertion hole is provided, and the punching die is provided with a pin fitting hole into which the positioning pin can be fitted.

Therefore, according to the punching device of the present invention, the punching die and the die die can be positioned and the punching die mounting portion of the punching device and the die can be simply operated by simply moving the positioning pin up and down. Positioning with the mold can be performed with high accuracy.
Therefore, since the positional accuracy of the punching die mounting portion of the punching device and the punching die is increased, the accuracy of the punching position in the workpiece can be increased. In addition, since the positional accuracy between the punching die and the die die is increased, it is possible to perform clean perforation without returning the section. Also, there is an effect that the cost of the drilling device can be reduced because a dedicated drilling die position adjusting device is not required.
These effects are obtained when the punching device is a punching device provided with a feeding mechanism for feeding a roll-like workpiece into a sheet and a winding mechanism for winding the sheet-like workpiece into a roll. As in the case of (1) or (4) described above, it becomes particularly large.
Further, by adding the feature of the punching device of the present invention to the punching device described in the above (1) or (4), a further excellent punching device is obtained.

(6) A punching device of the present invention has a table moving mechanism having a table movable in two directions intersecting at right angles and a table of the table moving mechanism, and punches a sheet-like workpiece. A punching device comprising a punching die for punching and a punching mechanism having a punching die comprising a die die, and two leg portions facing each other and the two leg portions on the table A gate-type frame having a ceiling part for connecting the punches is erected, and the punching die is attached to the ceiling part of the frame.

For this reason, according to the punching device of the present invention, the rigidity of the frame to which the punching die is attached is reliably increased.
Therefore, the positional accuracy of the punch die relative to the die die can be increased, the occurrence of section return due to perforation can be prevented, and the speed of perforation can be accommodated.
These effects are obtained when the punching device is a punching device provided with a feeding mechanism for feeding a roll-like workpiece into a sheet and a winding mechanism for winding the sheet-like workpiece into a roll. As in the case of (1), (4) or (5) described above, it becomes particularly large.
Further, by adding the features of the punching device of the present invention to the punching device described in the above (1), (4) or (5), a further excellent punching device can be obtained.

(7) The punching device of the present invention includes a feeding mechanism that feeds a roll-like workpiece into a sheet, a winding mechanism that winds the sheet-like workpiece into a roll, the feeding mechanism, and the winding mechanism. A punching device including a punching die for punching a sheet-like workpiece and a punching die having a punching die composed of a die die, A pair of tension mechanisms provided between the feeding mechanism and the punching mechanism and between the punching mechanism and the winding mechanism, each having a lifting roller for relaxing and tensioning the workpiece; It is characterized by that.

For this reason, according to the punching device of the present invention, the workpiece is relaxed by the raising and lowering rollers of each tension mechanism, and the workpiece is again tensioned by the lowering of the raising and lowering rollers.
Therefore, it is possible to eliminate the meandering movement of the workpiece that occurs due to the feeding / winding operation over a long period of time, and it is possible to perform good drilling.
By adding the features of the punching device of the present invention to the punching device described in the above (1), (4), (5) or (6), a further excellent punching device is obtained.

(8) A punching device of the present invention is provided on a table moving mechanism having a table movable in two directions intersecting at right angles, and a table of the table moving mechanism, and punches a sheet-like workpiece. A punching device comprising a punching die for punching and a punching mechanism having a punching die comprising a die die, wherein either one of the punching die and the die die Is provided with a through-hole for photographing that opens on the workpiece side, and an image sensor for reading the drilling position of the workpiece is disposed on the central axis of the through-hole. And

For this reason, according to the punching apparatus of the present invention, the punching position can be read in the plane of the punching die and the die die by the imaging device.
Accordingly, it is possible to shorten the horizontal movement time from the reading of the drilling position by the image sensor to the arrival of the drilling position of the punching die, and it is possible to speed up the drilling process.
Moreover, since the reading of the drilling position by the image sensor can be performed from the direction perpendicular to the workpiece, the reading accuracy can be improved.
The above-described effect is obtained when the punching device is a punching device including a feeding mechanism for feeding a roll-like workpiece into a sheet and a winding mechanism for winding the sheet-like workpiece into a roll. , Especially large.
Further, by adding the characteristics of the punching device of the present invention to the punching device described in the above (1), (4), (5), (6) or (7), a further excellent punching device is obtained.

In the punching device described in (8) above, it is preferable that the central axis of the through hole coincides with the central axis of the one mold.
With this configuration, the horizontal distance from the through hole to each punch has the same dimension, and the horizontal movement time from the reading of the punching position by the image sensor until reaching the punching position of each punch is set to the same time. can do.
Depending on the purpose of drilling (for example, when opening a through hole), it is possible not to read the drilling position by the image sensor.

(9) In the punching apparatus according to (8), a die different from the die provided with the through hole among the punch die and the die die is provided on a central axis of the through hole. It is preferable that an accommodation hole is provided that opens to the workpiece side, and a light emitting element that illuminates the workpiece is accommodated in the accommodation hole.
With this configuration, the illumination light from the light emitting element is effectively used for illumination of the workpiece. And the reading of a drilling position is performed effectively when the light which permeate | transmitted the to-be-processed object is read by an image pick-up element.

(10) In the punching device according to any one of (1) to (9), the punch die is a plurality of punches arranged along a virtual plane including a central axis of the punch die. The die mold has a plurality of die holes corresponding to the plurality of punch insertion holes, and the punches corresponding to the punch insertion holes are moved up and down differently by rotation of the cam shaft. It is preferable to be configured to be movable in the road.
With this configuration, by changing the rotation region of the cam shaft, any one of the plurality of punches can be selected and used for drilling the workpiece.

(11) In the punching device according to (10), the punch mold further includes another plurality of punch insertion holes arranged along a virtual plane that includes the central axis and is different from the virtual plane. The die mold has a plurality of other die holes corresponding to the other plurality of punch insertion holes, and the punch die and the die die are punching molds of a punching device. It is preferable that it is detachably attached to a plurality of circumferential positions around a virtual reference line perpendicular to the upper surface of the mold attaching portion.
By configuring in this manner, by changing the mounting position in the punch mold and the die mold, a plurality of punches arranged in a desired direction can be selected and used for drilling a workpiece. .

(12) A punching die according to the present invention positions a punching die, a die die, and these punching die and die die for punching a sheet-like workpiece. A punching die having at least two positioning pins for the die, the die die is provided with a pin insertion hole through which the positioning pin can be inserted, and the punch die A pin fitting hole into which the positioning pin can be fitted is provided.

For this reason, according to the punching die of the present invention, the punching die and the die die can be positioned and the punching die mounting portion of the punching device can be easily operated by simply moving the positioning pin up and down. Positioning with the die mold can be performed with high accuracy.
Therefore, since the positional accuracy of the punching die mounting portion of the punching device and the punching die is increased, the accuracy of the punching position in the workpiece can be increased. In addition, since the positional accuracy between the punching die and the die die is increased, it is possible to perform clean perforation without returning the section. Also, there is an effect that the cost of the drilling device can be reduced because a dedicated drilling die position adjusting device is not required.

(13) The punching method of the present invention uses a punching device having a punching mechanism having a punching die and a die for punching for punching a sheet-like workpiece. A punching method for punching a workpiece in a state in which tension is applied to the sheet-like workpiece interposed between the punch die and the die die, the punch die Drilling is performed in a state where the gap between the mold and the die mold is larger than the thickness of the sheet-like workpiece.

For this reason, according to the punching method of the present invention, the punching operation is performed in a state where tension is applied to the workpiece interposed between the punching die and the die die. As a result, the punching operation is performed at a correct angle with respect to the work piece, and the punch can be smoothly removed from the work piece. For this reason, it is possible to perform perforation in a state where the gap between the punch die and the die die is larger than the thickness of the sheet-like workpiece. That is, a stripper that has been conventionally required can be eliminated. Therefore, according to the drilling method of the present invention, the number of parts of the drilling device can be reduced, the cost can be reduced, and the mold structure can be simplified.
Further, since the drilling is performed in a state where the workpiece is in a non-pressed state, occurrence of damage to the workpiece can be surely suppressed, and reliability in quality can be improved.
These effects are achieved by the punching device having a feeding mechanism in which the sheet-like workpiece feeds the roll-like workpiece into a sheet shape and a winding mechanism for winding the sheet-like workpiece in a roll shape. This is particularly large in the case of a drilling device.
In addition, since the punching is performed in a state where the gap between the punching die and the die die is larger than the thickness of the sheet-like workpiece, the punching die itself does not need to be moved up and down at the time of punching. Since only the punch needs to be raised and lowered, it is easy to speed up the drilling.

(14) A method for positioning and fixing a punching die according to the present invention includes a punching die mounting portion having a pin positioning hole and a punch with a pin fitting hole for punching a sheet-like workpiece. In a drilling device comprising a punching mechanism having a punching die composed of a die for die and a die die with a pin insertion hole, a method for positioning and fixing the punching die to the punching die mounting portion A step of fitting a positioning pin into the pin insertion hole and the pin fitting hole to form a punching die assembly, and the punching die assembly is disposed at a predetermined position in the punching mechanism. And the step of lowering the positioning pin and fitting it into the positioning hole, and then fixing the die mold to the punching mold mounting portion on the die mold side and the punching mold For punching on the mold side of the punch A step of fixing to the mold attaching portion and a step of further lowering the positioning pin to release the fitting with the pin fitting hole and disassembling the punching die assembly in this order. It is characterized by.

For this reason, according to the positioning and fixing method of the punching die of the present invention, the positioning between the punch die and the die die and the table and die die can be performed with a simple operation of moving the positioning pin up and down. Positioning with high accuracy.
Therefore, since the positional accuracy between the table and the punching die is increased, the accuracy of the punching position in the workpiece can be increased. In addition, since the positional accuracy between the punching die and the die die is increased, it is possible to perform clean perforation without returning the section. Also, there is an effect that the cost of the drilling device can be reduced because a dedicated drilling die position adjusting device is not required.
These effects are obtained when the punching device is a punching device provided with a feeding mechanism for feeding a roll-like workpiece into a sheet and a winding mechanism for winding the sheet-like workpiece into a roll. , Especially large.

(15) In the method for positioning and fixing a punching die according to (14), in the step of forming the punching die assembly, between the punching die and the die die. In the step of forming a punching die assembly by interposing a spacer having a pin insertion hole and a thickness of 0.10 mm to 5.0 mm in advance, and disassembling the punching die assembly, The spacer interposed between the punch die and the die die is removed.
With this configuration, the gap between the punch mold and the die mold is extremely high in the range of 0.10 mm to 5.0 mm by a simple method using only a predetermined spacer. It can be controlled with accuracy. Further, since it is not necessary to separate the punch mold and the die mold so as to open a predetermined gap, the parallelism between the punch mold lower surface and the die mold upper surface can be made extremely high. it can. Furthermore, this also has the effect of preventing galling between the positioning pin, the pin insertion hole, and the pin fitting hole when the positioning pin is moved up and down.
This also means that the dimensional difference between the inner diameter of the pin insertion hole and the pin fitting hole and the outer diameter of the positioning pin can be set to an extremely small dimension. As a result, the relative horizontal positional accuracy between the punch mold and the die mold can be increased, and it is effective in preventing occurrence of section return due to drilling and speeding up drilling.

FIG. 1 is a front view showing a punching device according to an embodiment.
FIG. 2 is a plan view showing a perforating apparatus according to the embodiment.
[FIG. 3] AA sectional view of FIG.
FIG. 4 is a perspective view showing a punching mechanism of the punching device according to the embodiment.
FIG. 5 is a local sectional view of FIG.
FIG. 6 is a side view showing a punching mechanism of the punching device according to the embodiment.
FIG. 7 is a plan view showing a punching mechanism of the punching apparatus according to the embodiment.
FIG. 8 is a sectional view taken along line BB in FIG.
FIG. 9 is an enlarged cross-sectional view showing a portion A in FIG.
FIG. 10 is a perspective view showing a punching die according to the embodiment.
FIG. 11 is a view showing a punching die according to the embodiment.
FIG. 12 is a flowchart shown for explaining a method for positioning and fixing a punching die according to the embodiment.
FIG. 13 is a plan view showing a spacer used for carrying out the positioning and fixing method of the punching die according to the embodiment.
FIG. 14 is a sectional view showing a conventional perforating apparatus.

  Hereinafter, a punching device, a punching die, a punching method, and a positioning and fixing method of a punching die according to the present invention will be described based on the embodiments shown in the drawings.

  First, a perforation apparatus, a perforation mold, and a perforation method according to an embodiment will be described with reference to FIGS. FIG. 1 is a front view showing a punching device according to an embodiment. FIG. 2 is a plan view illustrating the punching device according to the embodiment. FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 4 is a perspective view illustrating a punching mechanism of the punching device according to the embodiment. FIG. 5 is a local cross-sectional view of FIG. FIG. 6 is a side view showing a punching mechanism of the punching device according to the embodiment. FIG. 7 is a plan view illustrating a punching mechanism of the punching device according to the embodiment. 8 is a cross-sectional view taken along the line BB in FIG. FIG. 9 is an enlarged cross-sectional view showing a portion A of FIG. FIG. 10 is a perspective view showing a punching die according to the embodiment. FIG. 11 is a diagram illustrating a punching die according to the embodiment. 11 (a) is a plan view, and FIG. 11 (b) is a cross-sectional view taken along the line C-C of FIG. 11 (a). However, in FIG. Only the visible parts are connected and displayed.)

  In the following description, the three directions orthogonal to each other are defined as the X-axis direction (parallel to the paper surface in FIG. 1 and the left-right direction), the Y-axis direction (direction perpendicular to the paper surface in FIG. In the direction parallel to the paper surface and perpendicular to the X axis).

  As shown in FIGS. 1 to 3, the punching device 100 has a device main body 200 for mounting and fixing various mechanisms (described later), and a feed for feeding a roll-shaped workpiece W into a sheet shape. A mechanism 300, a winding mechanism 400 for winding the sheet-like workpiece W fed out from the feeding mechanism 300 after punching, and a workpiece W between the winding mechanism 400 and the feeding mechanism 300. A pair of tension mechanisms 500, 600 for tensioning / relaxing, a table moving mechanism 700 interposed between the pair of tension mechanisms 500, 600, and the workpiece W are moved by the table moving mechanism 700 to perforate the workpiece W. A punching mechanism 800 for positioning, and a punching die positioning and fixing mechanism 900 for positioning and fixing the punching die of the punching mechanism 800 on the table, It is provided.

  The apparatus main body 200 is configured by a machine base having a substantially rectangular plane. On the back side of the apparatus main body 200, a controller box 210 containing a controller (not shown) that drives and controls each mechanism and the like by a setting program is disposed. On both sides of the apparatus main body 200 in the X-axis direction (left-right direction), substantially L-shaped rising walls 220 and 230 having vertical portions 220A and 230A and horizontal portions 220B and 230B are erected. In addition, on both sides of the apparatus main body 200 in the X-axis direction, roller support bases 240 and 250 that are positioned behind the rising walls 220 and 230 are erected.

  The rising walls 220 and 230 are provided with guide surfaces 221 and 231 that have a predetermined curvature and guide the thick workpiece W. On the vertical portions 220A and 230A of the rising walls 220 and 230, a movable clamper 222 and a fixed clamper 232 that can hold the workpiece W are disposed, respectively. A fixed clamper 233 capable of gripping the workpiece W is disposed on the horizontal portion 230 </ b> B of the rising wall 230.

  As shown in FIGS. 4 to 7, two upper and lower roll shafts 742 and 744 for sandwiching the workpiece W are provided on the upstream side of the drilling mechanism 800 (the feeding mechanism 300 side). On the downstream side (winding mechanism 400 side), two upper and lower roll shafts 752 and 754 for sandwiching the workpiece W are provided. The workpiece W is set on the lower roll shafts 742 and 752, and the upper roll shafts 744 and 754 are installed on the workpiece W. As a result, the workpiece W is sandwiched between the roll shafts by the weight of the upper roll shafts 744 and 754. These four roll shafts 742, 744, 752, and 754 are rotatable by ball bearings so as not to hinder the movement of the workpiece W.

As shown in FIGS. 1 to 3, the feeding mechanism 300 includes a feeding roller 310 and guide rollers 320 and 321.
The feeding roller 310 is rotatably supported at the upper end portion of the roller support base 240. And it is comprised so that the roll-shaped to-be-processed workpiece W may be let out to a sheet form by rotation by the drive of the torque motor 330. FIG.
The guide rollers 320 and 321 are arranged side by side with a predetermined interval in the X-axis direction. The left guide roller 320 is configured to guide a thick or thin workpiece, and the right guide roller 321 is configured to guide a thin workpiece. Yes.

The winding mechanism 400 includes a winding roller 410 and guide rollers 420 and 421.
The winding roller 410 is rotatably supported at the upper end of the roller support base 250. And it is comprised so that the sheet-like workpiece W may be wound up in roll shape by rotation by the drive of the torque motor 430.
The guide rollers 420 and 421 are arranged side by side with a predetermined interval in the X-axis direction. The left guide roller 420 is configured to guide a thin workpiece, and the right guide roller 421 is configured to guide a thick or thin workpiece. Yes.

  The tension mechanism 500 on the left side of the tension mechanisms 500, 600 has a lifting roller 510, is disposed below the feeding mechanism 300, and is installed on the left side of the apparatus main body 200. In the lifting roller 510, a roller shaft 510 </ b> A is pivotally supported by a lifting guide 530 via a slider 540 so as to be rotatable and liftable. Then, the workpiece W is relaxed by the rise by driving of the cylinder 520 and is tensioned by the descent by its own weight.

  The right tension mechanism 600 has an elevating roller 610, is disposed below the winding mechanism 400, and is installed on the right side of the apparatus main body 200. In the lifting roller 610, a roller shaft 610A is pivotally supported by a lifting guide 630 via a slider 640 so as to be rotatable and liftable. Then, the workpiece W is relaxed by being lifted by driving the cylinder 620, and is tensioned by being lowered by its own weight.

As shown in FIG. 3, the table moving mechanism 700 includes a first table moving mechanism 710 and a second table moving mechanism 720.
The first table moving mechanism 710 includes a screw shaft 711 and a table 712. The screw shaft 711 extends in the horizontal lateral direction (X-axis direction), and is rotatably supported at the central portion in the upper surface width direction of the apparatus main body 200. And it is comprised so that it can rotate by the drive of the servomotor 713. FIG. The table 712 is movably held on the apparatus main body 200 and the screw shaft 711, and is configured to be able to advance and retract in the X-axis direction by the rotation of the screw shaft 711 driven by the servo motor 713.

  The second table moving mechanism 720 includes a screw shaft 721 and a table 722. The screw shaft 721 extends in the horizontal vertical direction (Y-axis direction) and is rotatably supported on the upper surface of the table 712. And it is comprised so that it can rotate by the drive of the servomotor 723 (refer FIG. 2). The table 722 has positioning holes (not shown) that fit into positioning pins (described later) of the punching die positioning and fixing mechanism 900, and can move forward and backward on the table 712 and the screw shaft 721. Is retained. And it is comprised so that it can advance / retreat to a Y-axis direction by rotation of the screw shaft 721 by the drive of the servomotor 723. FIG. A fixed clamper 730 that holds the workpiece W and supplies the workpiece W from the feeding mechanism 300 side to the winding mechanism 400 side is disposed on the winding mechanism 400 side of the table 722.

As shown in FIGS. 4 to 7, the table 722 has a gate-type (coordinate) having two legs 724A and 724B facing each other and a ceiling 724C connecting the two legs 724A and 724B, as shown in FIGS. A character-like frame 724 is erected.
The dimension between the two leg portions 724A and 724B is set to be larger than the dimension in the width direction of the workpiece W.

  Although not shown here, the punching die attaching portion has a punching die attaching portion and a die die attaching portion. The punch mold attaching portion is provided on the frame 724, and the die mold attaching portion is provided on the table 722.

The punching mechanism 800 has a punching die 810 and is disposed on the table 722 of the second table moving mechanism 720.
The punching die 810 includes a punching die 820 and a die die 830, and is configured to punch the workpiece W.

  As shown in FIG. 11, the punch die 820 has a base 821, a plate mounting block 822, and a punch plate 823, and is entirely formed of a stepped (with a flange) block body. And it is attached to the ceiling part 724C of the frame 724 via a chuck member 910 (see FIG. 5). In the center of the punching die 820, a step-shaped accommodation hole 820A that opens to the workpiece side is provided. A light emitting element 840 (illustrated in FIGS. 8 and 9) for illuminating the workpiece W is accommodated in the accommodation hole 820A. Thereby, the illumination light from the light emitting element 840 is effectively used for illumination of the workpiece W.

  In the vicinity of the center of the punching die 820, the virtual axes described above include the two first punch insertion holes 820B and 820C arranged along the virtual plane including the central axis of the receiving hole 820A and the central axis of the receiving hole 820A. Two second punch insertion holes 820D and 820E arranged along another virtual plane orthogonal to the plane are provided. A pair of punches 850 and 851 are inserted through the first punch insertion holes 820B and 820C, as shown in FIGS. Similarly to the first punch insertion holes 820B and 820C, one set of punches (not shown) is inserted through the second punch insertion holes 820D and 820E. The corners of the punch mold 820 (corners facing each other) are outer peripheral portions of the first punch insertion holes 820B and 820C and the second punch insertion holes 820D and 820E, and are equidistant from each other (180 °). Two pin fitting holes 820F and 820G are provided in parallel in the circumferential direction.

  As shown in FIGS. 8 to 10, the punches 850 and 851 are connected to a camshaft 870 rotated by a servo motor 860 via roller shafts 871 and 872. The punches 850 and 851 are configured to be movable in different hoistways by the rotation of the camshaft 870 driven by the servomotor 860. For this reason, by changing the rotation region of the camshaft 860, one of the punches 850 and 851 (in this embodiment, the punch 850) can be selected and used for drilling the workpiece W. . The servo motor 860 and the cam shaft 870 are disposed on the ceiling 724C of the frame 724.

In the case where the punches 850 and 851 have the same diameter, for example, if the punch 850 is broken during the drilling of the same diameter, the punch 851 can be used instead of the punch 850. Removal and replacement are unnecessary.
Further, when the punches 850 and 851 are punches having different diameters (for example, a punch for through-hole drilling and a punch for guide hole drilling), it is possible to perform drilling with different diameters. There is no need to attach / remove / replace punches 850 and 851 by changing the object.

As shown in FIG. 11B, the die mold 830 includes a plate mounting block 831 and a die plate 832, and is entirely formed of a stepped (with a flange) block body. And it is arrange | positioned under the metal mold | die 820 for punches, and is attached to the table 722 via the chuck | zipper member 911 (refer FIG. 5). The die mold 830 is detachably attached to two circumferential positions around the central axis a together with the punch mold 820. For this reason, by changing the mounting position in the die mold 830 and the punch mold 820, one set of punches 850 and 851 is selected from the two sets of punches and used for drilling the workpiece W. Can do.
It should be noted that three or four sets of punches can be provided for one punching die by forming the punching die and die die into hexagonal or octagonal shapes.

  At the center of the die mold 830, as shown in FIG. 11B, there is a through-hole 830A for photographing that is located on the central axis a of the accommodation hole 820A and opens to the workpiece W side. Is provided. Pin insertion holes 830B and 830C that correspond to the pin fitting holes 820F and 820G, respectively, and are arranged in parallel in the circumferential direction at equal intervals (180 °) are provided at the corners of the die mold 830.

The die mold 830 (die plate 832) is provided with die holes (not shown) corresponding to the first punch insertion holes 820B and 820C and the second punch insertion holes 820D and 820E. On the central axis a of the through hole 830A in the die mold 830, an image sensor 880 (shown in FIG. 8) for reading the drilling position of the workpiece W is disposed. As a result, the horizontal distance from the image sensor 880 (through hole 830A) to each punch 850, 851 has the same dimension. The horizontal movement time until reaching the perforation position can be set to the same time.
Further, the illumination light from the light emitting element 840 passes through the workpiece W and is read by the imaging element 880, so that the reading of the drilling position is effectively performed.

The punching die positioning and fixing mechanism 900 includes chuck members 910 and 911 and positioning pins 920 and 921 as shown in FIGS. Then, in the state of drilling with the punching die 810, a gap G having a vertical dimension larger than the thickness of the workpiece W is formed between the punching die 820 and the die die 830. The vertical dimension of the gap G is, for example, 0.40 mm when the thickness of the workpiece W is 0.10 mm. The diameters of the punches 850 and 851 vary depending on the drilling target, but are set to, for example, 0.10 mm to 5.0 mm.

  The chuck member 910 is attached to the ceiling portion 724 </ b> C of the frame 724, and the chuck member 911 is attached to the center portion in the width direction of the table 722. Then, the punch die 820 is fixed to the ceiling portion 724C of the frame 724 by the chuck member 910, and the die die 830 is fixed to the center in the width direction of the table 722 (below the punch die 820) by the chuck member 911. Is configured to do.

  As shown in FIGS. 10 and 11, the positioning pins 920 and 921 can be fitted into the pin fitting holes 820F and 820G of the punching die 820, and the pin insertion hole 830B of the die die 830. , 830 </ b> C, and a cylindrical body that fits into a positioning hole (not shown) provided in the table 722. At the lower ends of the positioning pins 920 and 921, elongated holes 920A and 921A are provided, which penetrate in the pin radial direction and through which the eccentric shafts 930A and 931A of the pin operation elements 930 and 931 are inserted, respectively. The positioning pins 920 and 921 are configured to move in the vertical direction by rotating the pin operators 930 and 931, respectively.

  In order to perform the drilling on the workpiece W using the drilling apparatus 100 configured as described above, the process is performed as follows.

  First, the workpiece W is interposed between the punch die 820 (punch plate 823) and the die die 830 (die plate 832). In this case, a gap G (shown in FIG. 11) between the punching die 820 and the die die 830 is set to a size larger than the thickness of the workpiece W by the punching die positioning and fixing mechanism 900. Is formed.

  Next, the feeding mechanism 300, the winding mechanism 400, and the table moving mechanism 700 (first table moving mechanism 710) are driven in synchronization, and the workpiece W is quantitatively supplied from the feeding side to the winding side. At this time, a gripping force by the fixed clamper 730 is applied to the workpiece W, and a gripping force by the movable clamper 222 and the fixed clampers 232 and 233 is released.

Thereafter, the movable clamper 222 moves forward from the unwinding side to the winding side, and gives a gripping force to the workpiece W at the forward movement position, and the fixed clamper 232 gives a gripping force, The gripping force by the fixed clamper 730 is released.
When the gripping force by the fixed clamper 730 is released, the movable clamper 222 moves backward from the winding side to the feeding side with the gripping force applied. As a result, tension is applied to the workpiece W by the movable clamper 222 and the fixed clamper 232. For this reason, the deflection in the sheet-like workpiece W interposed between the punch die 820 and the die die 830 is suppressed.

  At this time, since the sheet-like workpiece W is sandwiched between the upper roll shafts 744 and 754 and the lower roll shafts 742 and 752, the deflection is further effectively suppressed. Yes.

  When the image sensor 880 detects the reference mark (display mark for reading the punching position) of the workpiece W, the punching die 810 (the punching die 820 and the punching die 820 and the punching die 820) is driven by the first table moving mechanism 710. The die mold 830) is transferred to the perforation area.

Then, the punching die 810 is moved along two horizontal directions intersecting at right angles by driving the table moving mechanism 700, and the workpiece W is punched by moving the punch 850 up and down by the rotation of the camshaft 870. In this case, the punch 851 can be used for drilling the workpiece W instead of the punch 850 by changing the rotation region of the camshaft 870.
In this way, the workpiece W is drilled.

  In addition, in order to eliminate the meandering movement of the workpiece W caused by perforation (feeding / winding operation) for a long time, the lifting rollers 510 and 610 of the tension mechanisms 500 and 600 are appropriately lifted to the workpiece W. It is preferable to release the tension.

  As described above, the punching device 100, the punching die 810, and the punching method according to the embodiment can obtain the effects as shown in the following (A) to (E).

(A) Since the punching operation is performed in a state where tension is applied to the workpiece W interposed between the punch die 820 and the die die 830, the sheet-like workpiece W is bent. As a result, the punching operation is performed at a correct angle with respect to the workpiece W, so that the punch can be smoothly removed from the workpiece W. For this reason, it is possible to perform perforation in a state where the gap G between the punching die 820 and the die die 830 is larger than the thickness of the sheet-like workpiece W. That is, the stripper that has been conventionally required can be eliminated. Therefore, the number of parts can be reduced, the cost can be reduced, and the mold structure can be simplified.
Further, since the drilling is performed in a state where the workpiece W is in a non-pressed state, occurrence of damage to the workpiece W can be reliably suppressed, and reliability in quality can be improved. .
In addition, since punching is performed in a state where the gap G between the punching die 820 and the die die 830 is larger than the thickness of the sheet-like workpiece W, the punching die 820 itself is Since it is not necessary to move up and down, and only the punches 850 and 851 need to be moved up and down, it is easy to increase the speed of drilling.

(B) Since the frame 724 is a portal frame having two leg portions 724A and 724B facing each other and a ceiling portion 724C connecting the two leg portions 724A and 724B, the frame to which the punching die 820 is attached. The rigidity of 724 is reliably increased.
For this reason, the positional accuracy of the punch die 820 relative to the die die 830 can be increased, the occurrence of return of the section due to perforation can be prevented, and the speed of perforation can be accommodated.

(C) Since the pair of tension mechanisms 500 and 600 having the lifting rollers 510 and 610 for relaxing and tensioning the workpiece W are provided, the workpieces are processed by raising the lifting rollers 510 and 610 of the tension mechanisms 500 and 600. The workpiece W is relaxed, and the workpiece W is tensioned again by the lowering.
For this reason, it is possible to eliminate the meandering movement of the workpiece that occurs due to the feeding and winding operation over a long period of time, and it is possible to perform a good drilling process.

(D) Since the image sensor 880 for reading the drilling position of the workpiece W is disposed on the central axis a of the through hole 830A, the punch mold 820 and the die mold 830 are formed by the image sensor 880. The drilling position can be read in the plane.
For this reason, the horizontal movement time from the reading of the drilling position by the image sensor 880 to the drilling position of the punching die 810 can be shortened, and the speed of drilling can be increased.
Moreover, since the reading of the drilling position by the image sensor 880 can be performed from the direction perpendicular to the workpiece W, the reading accuracy can be improved.

(E) The punching die positioning and fixing mechanism 900 has two positioning pins 920 and 921 that are movable in the vertical direction, and the positioning pins 920 and 921 are fitted to the punching die mounting portion. Pin positioning holes 830B and 830C through which positioning pins 920 and 921 can be inserted are provided in the die mold 830, and the positioning pins 920 and 830C are provided in the punch mold 820. Pin fitting holes 820F and 820G into which 921 can be fitted are provided.
Therefore, the positioning of the punching die 820 and the die die 830 and the punching die mounting portion of the punching device 800 and the die die 830 can be performed with a simple operation of moving the positioning pins 920 and 921 up and down. Positioning with high accuracy.
Accordingly, since the positional accuracy between the punching die mounting portion of the punching device 800 and the punching die 810 is increased, the accuracy of the punching position in the workpiece W can be increased. In addition, since the positional accuracy between the punch mold 820 and the die mold 830 is increased, it is possible to perform clean drilling without returning the section. Also, there is an effect that the cost of the drilling device can be reduced because a dedicated drilling die position adjusting device is not required.

Next, a method for positioning and fixing a punching die according to the embodiment will be described with reference to FIGS. 5 and 10 to 13. FIG. 12 is a float chart for explaining a method for positioning and fixing a punching die according to the embodiment. FIG. 13 is a plan view showing a spacer used for carrying out the positioning and fixing method of the punching die according to the embodiment.
The method for positioning and fixing the punching die according to the embodiment includes the steps of “forming step of punching die assembly”, “placement step of punching die assembly”, “attaching punching die / die die” Since the “process” and the “disassembly process of the punching die assembly” are sequentially performed, each of these processes will be described sequentially.

  In addition, the positioning pins 920 and 921 used in the positioning and fixing method for the punching die according to the embodiment are fitted into the pin insertion holes 830B and 830C of the die die 830 before the formation of the punching die assembly. It is assumed that the upper end portion is exposed above the die mold 830.

1. First, a spacer P (see FIG. 13) having a thickness (for example, 395 μm) set in advance to a dimension slightly smaller than the vertical dimension (for example, 400 μm) of the gap G (shown in FIG. 11). 12 is interposed between the punch die 820 (punch plate 823) and the die die 830 (die plate 832) to form a punch die assembly (step S1 in FIG. 12). At this time, the positioning pins 920 and 921 are inserted into the pin insertion holes P ₁ and P ₂ , the spacer P is placed on the die plate 832, and the positioning pins 920 and 921 are further inserted into the pin fitting holes 820 F and 820 G. By fitting and placing the punching die 820 on the spacer P, a punching die assembly is formed.

2. Next, the drilling die assembly formed in the “perforation mold assembly forming step” is mounted on the upper and lower mounting positions (shown in FIG. 5) of the punching die assembly (shown in FIG. 5). They are interposed between the mounting surfaces parallel to each other (step S2 in FIG. 12).

3. Next, the positioning pins 920 and 921 are moved downward by rotating the pin operation elements 930 and 931 (shown in FIG. 10) to move the table 722. Are fitted into positioning holes (not shown). As a result, the die mold 830 can be positioned with respect to the table 722 with high accuracy. At this time, the positioning pins 920 and 921 pass through the pin insertion holes P ₁ and P ₂ of the spacer P, and remain fitted in the pin fitting holes 820F and 820G of the punch die 820.

Next, the die die 830 is attached to the lower attachment position of the punching mechanism 800 by the chuck member 911 of the punching die positioning and fixing mechanism 900. In this case, since the die mold 830 is mounted by positioning the die mold 830 with the positioning pins 920 and 921, the mounting accuracy is improved.
Next, after the punch die 820 is positioned at the upper attachment position of the punching mechanism 800, the punch die 820 is attached by the chuck member 910 of the punching die positioning and fixing mechanism 900 (step S3 in FIG. 12).

4). Disassembling process of the punching die assembly Thereafter, the pin operation elements 930 and 931 are rotated to move the positioning pins 920 and 921 further downward to engage with the pin fitting holes 820F and 820G. At the same time, the spacer P between the punch mold 820 and the die mold 830 is removed (step S4 in FIG. 12). As a result, the punching die assembly is disassembled. At this time, the upper ends of the positioning pins 920 and 921 are accommodated in the pin insertion holes 830B and 830C of the die mold 830.
When the spacer P is removed, a gap G set with high accuracy and high parallelism is formed between the punch die 820 (punch plate 823) and the die die 830 (die plate 832). The
In this way, the punching die 810 is positioned and fixed with respect to the punching mechanism 800.

As described above, according to the positioning and fixing method of the punching die according to the embodiment, the punch die 820 and the die die 830 can be easily operated by simply moving the positioning pins 920 and 921 up and down. Positioning and positioning of the table 722 and the die mold 830 can be performed with high accuracy.
For this reason, since the positional accuracy of the table 722 and the punching die 810 is increased, the accuracy of the punching position in the workpiece W can be increased. In addition, since the positional accuracy between the punch mold 820 and the die mold 830 is increased, it is possible to perform clean drilling without returning the section. Also, there is an effect that the cost of the drilling device can be reduced because a dedicated drilling die position adjusting device is not required.

In the method for positioning and fixing the punching die according to the embodiment, the pin insertion hole P _{1 is} provided between the punching die 820 and the die die 830 in the step of forming the punching die assembly. , by previously interposing the spacer P with a thickness of 0.10mm~5.0mm have P ₂ to form a perforated mold assembly, in the decomposition step of piercing die assembly, gold punch The spacer P interposed between the mold 820 and the die mold 830 is configured to be removed.

  Thereby, the size of the gap between the punching die 820 and the die die 830 can be set to a very high accuracy within a range of 0.10 mm to 5.0 mm by a simple method using only the predetermined spacer P. Can be controlled. In addition, since it is not necessary to separate the punch mold 820 and the die mold 830 so as to open a predetermined gap, the parallelism between the lower surface of the punch mold 820 and the upper surface of the die mold 830 is extremely high. Can be expensive. Further, this prevents the occurrence of galling between the positioning pins 920, 921 and the pin insertion holes 830B, 830C and the pin fitting holes 820F, 820G when the positioning pins 920, 921 are moved up and down. There is also an effect that can be done.

  This also means that the dimensional difference between the inner diameter of the pin insertion holes 830B and 830C and the pin fitting holes 820F and 820G and the outer diameter of the positioning pins 920 and 921 can be set to a very small dimension. As a result, the relative horizontal positional accuracy between the punch mold 820 and the die mold 830 can be increased, which is effective in preventing occurrence of section return due to drilling and speeding up drilling.

  As described above, the punching device, the punching die, the punching method, and the positioning and fixing method of the punching die according to the present invention have been described based on the above embodiment, but the present invention is not limited to the above embodiment. The present invention can be implemented in various modes without departing from the gist thereof, and for example, the following modifications are possible.

(1) In the above-described embodiment, the case where the present invention is applied to a punching device that punches a workpiece fed from a roll shape into a sheet shape has been described. The present invention can be similarly applied to a drilling apparatus for drilling a workpiece.

(2) In the above embodiment, the case where the present invention is applied to a punching device in which the punching die moves with respect to the workpiece has been described. However, the present invention is not limited to this, and the punching die is used. On the other hand, the present invention can be similarly applied to a drilling apparatus in which a workpiece is moved.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Punching device, 200 ... Apparatus main body, 222 ... Moving clamper, 232, 233 ... Fixed clamper, 300 ... Feeding mechanism, 400 ... Winding mechanism, 500 ... Tension mechanism, 510 ... Lifting roller, 600 ... Tension Mechanism, 610 ... Lifting roller, 700 ... Table moving mechanism, 710 ... First table moving mechanism, 720 ... Second table moving mechanism, 712, 722 ... Table, 724 ... Frame, 724A, 724B ... Leg, 724C ... Ceiling 730, fixed clamper, 742, 744, 752, 754, roll shaft, 800, punching mechanism, 810, punching die, 820, punching die, 820A, receiving hole, 820F, 820G, pin fitting Hole, 830 ... Die mold, 830A ... Through hole, 830B, 830C ... Pin insertion hole, 840 ... From Element, 850, 851 ... Punch, 870 ... Camshaft, 880 ... Image sensor, 900 ... Die positioning and fixing mechanism for punching, 910,911 ... Chuck member, 920,921 ... Pin for positioning, a ... Center axis, P ... Spacer, P ₁ , P ₂ ... Pin insertion hole, W ... Workpiece

Claims (15)

A punching mechanism comprising a punching die for punching a sheet-like workpiece and a punching die comprising a die die;
A punching device comprising means for imparting tension to a sheet-like workpiece interposed between the punch die and the die die,
The punching mechanism is a punching mechanism that performs punching in a state where a gap between a punching die and a die die is larger than a thickness of a sheet-like workpiece. The perforating apparatus according to claim 1,
The perforating device performs perforation in a state where a gap between a punch die and a die die is 0.10 mm to 5.0 mm. The perforation apparatus according to claim 1 or 2,
The perforating apparatus, wherein the perforating mechanism performs perforation without a guide pin interposed between the punching die and the die die. In the perforation apparatus in any one of Claims 1-3,
2. A perforating apparatus comprising two upper and lower roll shafts for sandwiching a sheet-like workpiece on both sides of a machining area. A punching mechanism comprising a punching die for punching a sheet-like workpiece and a punching die comprising a die die;
A punching device comprising a punching die positioning and fixing mechanism for positioning and fixing the punching die on a punching die mounting portion of the punching device,
This punching die positioning fixing mechanism has at least two positioning pins movable in the vertical direction,
The punching die mounting portion is provided with a pin positioning hole for fitting the positioning pin,
The die mold is provided with a pin insertion hole through which the positioning pin can be inserted,
The punching die is provided with a pin fitting hole into which the positioning pin can be fitted. A table moving mechanism having a table movable in two directions intersecting at right angles;
A punching device provided on a table of the table moving mechanism and provided with a punching die for punching a sheet-like workpiece and a punching die having a punching die composed of a die die. There,
On the table, a gate-shaped frame having two leg portions facing each other and a ceiling portion connecting the two leg portions is erected,
A punching device, wherein the punching die is attached to a ceiling portion of the frame. A feeding mechanism for feeding a roll-like workpiece into a sheet;
A winding mechanism for winding a sheet-like workpiece into a roll;
A punching mechanism that is disposed between the feeding mechanism and the winding mechanism and has a punching die for punching a sheet-like workpiece and a punching die composed of a die die; A drilling device comprising:
A pair of tension mechanisms provided between the feeding mechanism and the punching mechanism and between the punching mechanism and the winding mechanism, each having a lifting roller for relaxing and tensioning the workpiece; A perforating apparatus characterized by that. A table moving mechanism having a table movable in two directions intersecting at right angles;
A punching device provided on a table of the table moving mechanism and provided with a punching die for punching a sheet-like workpiece and a punching die having a punching die composed of a die die. There,
One of the punch mold and the die mold is provided with a through-hole for photographing that opens to the workpiece side,
A punching device, wherein an image sensor for reading a punching position of a workpiece is disposed on a central axis of the through hole. The perforating apparatus according to claim 8,
Among the punch mold and the die mold, the mold different from the mold provided with the through hole is located on the central axis of the through hole and accommodated to be opened on the workpiece side. A hole is provided,
A perforating apparatus characterized in that a light emitting element for illuminating a workpiece is accommodated in the accommodation hole. In the perforation apparatus in any one of Claims 1-9,
The punch mold has a plurality of punch insertion holes arranged along a virtual plane including the central axis in the punch mold,
The die mold has a plurality of die holes corresponding to the plurality of punch insertion holes,
Each punch corresponding to each said punch insertion hole is comprised so that a movement in a mutually different hoistway is possible by rotation of a cam shaft. The perforating apparatus according to claim 10,
The punch die further includes another plurality of punch insertion holes arranged along a virtual plane that includes the central axis and is different from the virtual plane,
The die mold has another plurality of die holes corresponding to the other plurality of punch insertion holes,
The punching die and the die die are detachably attached at a plurality of circumferential positions around a virtual reference line perpendicular to the upper surface of the punching die mounting portion of the punching device. Punching device to do. Punch having a punch die for punching a sheet-like workpiece, a die die, and at least two positioning pins for positioning the punch die and the die die Mold,
The die mold is provided with a pin insertion hole through which the positioning pin can be inserted,
The punching mold is provided with a pin fitting hole into which the positioning pin can be fitted. Using a punching device equipped with a punching mechanism having a punching die for punching a sheet-like workpiece and a punching die composed of a die die,
A punching method for punching a workpiece in a state in which tension is applied to the sheet-like workpiece interposed between the punch die and the die die,
A punching method, wherein the punching is performed in a state where a gap between the punching die and the die die is larger than a thickness of the sheet-like workpiece. A drilling die mounting portion having a pin positioning hole;
A punching device comprising a punching die having a pin fitting hole for punching a sheet-like workpiece and a punching die comprising a die die having a pin insertion hole. , A method of positioning and fixing the punching die to the punching die mounting portion,
A step of fitting a positioning pin to the pin insertion hole and the pin fitting hole to form a punching die assembly;
Disposing the punching die assembly at a predetermined position in the punching mechanism;
After the positioning pin is lowered and fitted into the positioning hole, the die mold is fixed to the punching mold mounting portion on the die mold side and the punch mold is fixed to the punch Fixing to the drilling die mounting part on the mold side,
A step of lowering the positioning pin further to release the fitting with the pin fitting hole and disassembling the punching die assembly in this order. Positioning and fixing method. The method for positioning and fixing a punching die according to claim 14,
In the step of forming the punching die assembly, a spacer having a pin insertion hole and a thickness of 0.10 mm to 5.0 mm is provided between the punching die and the die die. Form a die assembly for drilling by interposing in advance,
In the step of disassembling the punching die assembly, the spacer interposed between the punching die and the die die is removed, and the method for positioning and fixing the punching die is characterized in that:

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