KR100770476B1 - Device and method of punching - Google Patents

Abstract

A punching mechanism 800 having a punching die 820 for punching the sheet-shaped workpiece W, and a punching die 810 consisting of a die die 830, and a punching die 820 And a punching device 100 having means for imparting a tension force to the sheet-shaped workpiece W interposed between the die 830 and the die die 830, and the punching mechanism 800 is different from the punching die 820. It is a punching mechanism which drills in the state in which the space | gap G between the utilization metal molds 830 is larger than the thickness of the sheet-like workpiece W. For this reason, the punching device 100 of the present invention can reduce the cost and simplify the mold structure, increase the reliability of the quality, or become a punching device that is easy to speed up the drilling.

Punching die, die die, punching die, work piece, punching device, drilling tool

Description

Drilling device and drilling method {DEVICE AND METHOD OF PUNCHING}

TECHNICAL FIELD The present invention relates to a punching device, a punching die, a punching method, and a positioning fixing method of a punching die, which are suitable for use when punching a sheet-shaped workpiece.

For example, in order to puncture a workpiece such as a metal sheet, a printed board, or a flexible substrate, punching of the punching die is performed by interposing the workpiece between the punching die and the die die. By fitting into the

Conventionally, the punching apparatus as shown in FIG. 14 is used for the drilling of the workpiece of this kind (for example, refer patent document 1 (Unexamined-Japanese-Patent No. 2002-263750)).

This punching device will be described with reference to FIG. 14. The punching device 1 includes a punching die 2 and a die die 3.

The punching die 2 has a backing plate 4, a punching plate 5 and a stripper 6, as shown in Fig. 14A, and a plate 8 for attachment to the lower end of the guide plate 7; ) And it is comprised so that it may raise and lower with the guide plate 7 and the attachment plate 8 by the drive of a lifting mechanism (not shown). The backing plate 4 is fixed to the guide plate 7 via the attachment plate 8. The punching plate 5 has a punching 5a inserted into the stripper 6 and passed therethrough, and is fixed to the backing plate 4. The stripper 6 has the protrusion part 6a, and is arrange | positioned below the punching plate 5 so that lifting and lowering is possible.

The guide plate 7 is connected to a lifting mechanism (not shown) via the guide shaft 9. The attachment plate 8 is provided with a spring receiving hole 8a for accommodating the compression spring 10. The lower end of the compression spring 10 is attached with a stripper guide pin 11 inserted into the backing plate 4 and the punching plate 5. The stripper 6 is attached to the front end of the stripper guide pin 11.

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

In order to puncture the workpiece by using the punching device 1 configured as described above, the workpiece (not shown) is loaded on the die plate 12 of the die die 3, and then the upper standby position in advance. It performs by lowering the punching die 2 arrange | positioned at.

In this case, when the punching die 2 descends, the projecting portion 6a of the stripper 6 contacts the workpiece on the die plate 12. When the punching die 2 further descends from this state, the projecting portion 6a of the stripper 6 press-contacts the workpiece on the die plate 12. For this reason, the punching 5a protrudes downwardly from the die plate 12 in the state where the stripper 6 press-contacts the workpiece on the die plate 12, fits into the die hole 12a, and perforates the workpiece. Is carried out.

When the punching die 2 rises, the punching 5a exits from the die hole 12a of the workpiece in the state in which the stripper 6 presses the workpiece on the die plate 12. Smooth drilling operation is realized.

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-263750 (Fig. 6)

By the way, in the above-mentioned punching apparatus, since a stripper is required in order to perform the perforation | work of a to-be-processed object smoothly, there existed a subject that the number of parts became large and cost increased, and the mold structure became complicated.

In addition, since the stripper press-fits the workpiece to the die plate at the time of drilling, there is a problem that the workpiece is liable to be damaged and the reliability in quality is lowered.

Moreover, since the whole punching die needs to elevate at the time of punching, there also existed a subject that it was not easy to speed up punching.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is possible to reduce the cost and simplify the mold structure, increase the reliability of the quality, and further facilitate the punching apparatus, the punching die, and the like. It is an object to provide a drilling method.

Moreover, an object of this invention is to provide the positioning fixing method of the drilling die which can aim at the simplification of the positioning work of the drilling die.

(1) The punching device of the present invention includes a punching mechanism having a punching die made of a punching die and a die for punching a sheet-shaped workpiece, and interposed between the punching die and the die die. A punching device comprising means for imparting a tension force to a sheet-shaped workpiece, wherein the punching mechanism performs punching in a state where the gap between the punching die and the die mold is larger than the thickness of the sheet-shaped workpiece. It is characterized by being a drilling tool.

For this reason, according to the punching apparatus of this invention, since a punching operation | movement is performed in the state to which the workpiece | work interposed between the punching die and the die die is provided, the curvature of a sheet-shaped workpiece can be suppressed effectively, As a result, the punching operation is performed at the correct angle with respect to the workpiece, and punching is smoothly released from the workpiece. For this reason, it becomes possible to perforate in the state in which the space | gap between a punching die and a die die is larger than the thickness of a sheet-like workpiece. That is, the stripper which is conventionally required can be made unnecessary. Therefore, according to the punching device of the present invention, the number of parts can be reduced, so that the cost can be reduced and the mold structure can be simplified.

Further, since the drilling is performed in a state in which the workpiece is in a non-pressed state, damage to the workpiece can be reliably suppressed and the reliability in quality can also be improved.

This effect is particularly large when the punching device is a punching device having a feeding mechanism for feeding a roll-shaped workpiece into a sheet shape and a winding mechanism for winding the sheet-shaped workpiece in a roll shape.

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 lifted at the time of drilling, and only the punching is lifted. Therefore, it becomes easy to speed up the perforation.

(2) In the punching apparatus as described in said (1), it is preferable that the said punching mechanism performs punching in the state in which the space | gap between a punching die and a die die is 0.10 mm-5.0 mm.

Here, the space | gap made 0.10 mm or more is because when a space | gap is made less than 0.10 mm, it becomes impossible to perforate a comparatively thick workpiece. From this point of view, the void is more preferably 0.20 mm or more, and more preferably 0.30 mm or more. The void is 5.0 mm or less because when the void exceeds 5.0 mm, it is not easy to secure the positional accuracy between the leading end of the punching and the die hole, and it is not easy to maintain the straightness of the punching during drilling. Because it does not. From this point of view, the void is more preferably 3.0 mm or less, and more preferably 2.0 mm or less.

(3) In the punching apparatus as described in said (1) or (2), it is preferable that the said punching mechanism performs drilling in the state in which the guide pin is not interposed between the said punching die and the said die die.

By configuring in this way, it becomes possible to load a large-area workpiece between a punching die and a die die, and to perforate a large-area workpiece.

(4) In the punching apparatus in any one of said (1)-(3), it is preferable to provide two upper and lower roll shafts in both sides of a to-be-processed area, for fitting a sheet-shaped workpiece.

By configuring in this way, the curvature of the sheet-like workpiece is suppressed more effectively.

Moreover, this effect is the above-mentioned (1) when a punching apparatus is a punching apparatus provided with the feeding mechanism which feeds a roll-shaped workpiece to a sheet form, and the winding mechanism which winds up a sheet-shaped workpiece to roll form, As is the case, it is particularly large.

(5) The punching device of the present invention is a punching mechanism having a punching die made of a punching die and a die for punching a sheet-shaped workpiece, and the punching die attachment portion of the punching device. A perforation device having a perforation mold positioning fixing mechanism for positioning and fixing a mold, wherein the perforating mold positioning fixing mechanism has at least two positioning pins movable in an up and down direction, and is attached to the perforating mold. A part is provided with a pin positioning hole for fitting the positioning pin, and the die die is provided with a pin insertion hole capable of inserting and passing the positioning pin, and the punching die has the position. The pin fitting hole which can fit the crystal pin is provided, It is characterized by the above-mentioned.

For this reason, according to the punching device of the present invention, the punching die and the die die are positioned and the punching die attaching part of the punching die and the die die are made by simply operating the pins for positioning. Positioning can be performed with high precision.

Therefore, since the positional accuracy of the punching die attachment part of a drilling apparatus and a drilling die becomes high, the precision of the drilling position in a to-be-processed object can be improved. In addition, since the positional accuracy of the punching die and the die die increases, it is possible to perform clean drilling without burr of the protruding member. Moreover, there is also an effect that a dedicated punching die position adjusting device is not necessary and the cost of the punching device can be reduced.

Moreover, such an effect is the above-mentioned (1) or when the punching apparatus is a punching apparatus provided with the feeding mechanism which feeds a roll-shaped workpiece to a sheet form, and the winding mechanism which winds up a sheet-shaped workpiece to roll form, or As in the case of (4), it becomes especially large.

In addition, by adding the features of the drilling device of the present invention to the drilling device described in the above (1) or (4), a more excellent drilling device is obtained.

(6) The punching device of the present invention is for punching for punching a table moving mechanism having a table movable in two directions crossing at right angles and a table of the table moving mechanism and punching a sheet-shaped workpiece. A perforation device having a perforation mechanism having a perforating die made of a die and a die for die, wherein a frame in the form of a door having two legs facing each other and a ceiling part connecting the two legs is installed upright. And the punching die is attached to the ceiling of this frame.

For this reason, according to the drilling device of this invention, the rigidity of the frame which sticks a punching metal mold | die is raised reliably.

Therefore, the positional accuracy of the punching die with respect to the die die can be improved, and the occurrence of burrs of the protruding members due to the drilling can be prevented, and the punching speed can be coped with.

In addition, when the punching device is a punching device having a feeding mechanism for feeding a roll-shaped workpiece into a sheet shape and a winding mechanism for winding the sheet-shaped workpiece in a roll shape, the above-mentioned (1), As in the case of (4) or (5), it becomes especially large.

In addition, by adding the features of the drilling device of the present invention to the drilling device described in the above (1), (4) or (5), a more excellent drilling device is obtained.

(7) The punching device of the present invention is arranged between a feeding mechanism for feeding a roll-shaped workpiece in a sheet shape, a winding mechanism for winding a sheet-shaped workpiece in a roll shape, and between the feeding mechanism and the winding mechanism. And a punching mechanism having a punching die for punching a sheet-shaped workpiece, and a punching die comprising a die die, wherein the punching mechanism and the punching mechanism and between the punching mechanism and the winding A pair of tension mechanisms, which are arranged between the mechanisms and have lifting rollers for relaxing and tensioning the workpiece, are further provided.

For this reason, according to the punching apparatus of this invention, a to-be-processed object is loosened by the raise of the lifting roller of each tension mechanism, and a to-be-worked object is tensioned again by the falling of the lifting roller.

Therefore, the meandering movement of the workpiece caused by the feeding / winding operation that takes a long time can be eliminated, and favorable drilling can be performed.

By adding the features of the drilling device of the present invention to the drilling device described in the above (1), (4), (5) or (6), a more excellent drilling device is obtained.

(8) The punching device of the present invention is a table moving mechanism having a table movable in two directions crossing at right angles, and a punching for drilling a sheet-shaped workpiece disposed on a table of the table moving mechanism. A perforation device comprising a perforation mechanism having a perforation die comprising a die for die and a die for die, wherein either one of the punching die and the die die is provided with a through hole for photographing to be opened on the work side. An imaging device for reading the punched position of the workpiece is arranged on the central axis of the through hole.

For this reason, according to the punching device of this invention, reading of a punching position is possible in the plane of a punching die and a die die by an imaging element.

Therefore, the horizontal movement time from the reading of the punching position by the imaging element to the punching position of the punching die can be shortened, and the punching speed can be increased.

In addition, since the reading of the puncturing position by the imaging device can be performed from the direction perpendicular to the workpiece, the reading accuracy can be improved.

Moreover, the said effect becomes especially large when a punching apparatus is a punching apparatus provided with the feeding mechanism which feeds a roll-shaped workpiece to a sheet form, and the winding mechanism which winds up a sheet-shaped workpiece to roll form.

In addition, by adding the features of the drilling device of the present invention to the drilling device described in the above (1), (4), (5), (6) or (7), a more excellent drilling device is obtained.

In the punching device as described in said (8), it is preferable that the center axis | shaft of the said through-hole coincides with the center axis | shaft of either said metal mold | die.

With this arrangement, the horizontal distance from the through hole to each punching becomes the same dimension, and the horizontal movement time from reading of the punching position by the imaging element to reaching the punching position of each punching can be set at the same time.

In addition, depending on the purpose of drilling (for example, when the through-hole is opened), the reading of the drilling position by the imaging element may not be performed.

(9) The punching device according to (8), wherein the punching die and the die die, which are different from the die provided with the through hole, are located on the central axis of the through hole and on the workpiece side. It is preferable that an accommodation hole for opening is provided, and the accommodation hole accommodates a light emitting element for illuminating the workpiece.

By such a configuration, the illumination light from the light emitting element is effectively used for illumination of the workpiece. And the light which permeate | transmitted a to-be-processed object is read by an imaging element, and reading of a punching position is performed effectively.

(10) In the drilling device described in any one of (1) to (9), the punching die has a plurality of punching insertion holes arranged along an imaginary plane including a central axis of the punching die. The die for die has a plurality of die holes corresponding to the plurality of punching insertion holes, and each punching corresponding to each of the punching insertion holes is configured to be movable in a different hoistway by rotation of a cam shaft. desirable.

In such a configuration, by changing the rotation region of the camshaft, any punching among a plurality of punchings can be selected and used for drilling the workpiece.

(11) In the drilling device described in (10), the punching die further includes a plurality of separate punching insertion holes including the central axis and arranged along a virtual plane different from the virtual plane, and for the die. The mold has a plurality of separate die holes corresponding to the plurality of separate punching insertion holes, and the punching die and the die die are around a virtual reference line perpendicular to the upper surface of the punching die attachment portion of the punching device. It is preferable to be detachably attached to the some circumferential direction position of the.

In this configuration, a plurality of punches arranged in a desired direction can be selected and used for drilling the workpiece by changing the attachment positions in the punching die and the die die.

(12) The punching die of the present invention is a punching die for punching a sheet-shaped workpiece, a die for die, and at least two positioning for positioning the punching die and the die die. A die for drilling having a pin for forming, The die die is provided with a pin insertion hole capable of inserting and passing the positioning pin, and the punching die is fitted with a pin for fitting the positioning pin. A hole is provided.

For this reason, according to the drilling die of the present invention, the punching die and the die die attaching part and the punching die attaching part of the punching device and the die die are carried out by a simple operation as much as up and down the positioning pin. Can be performed with high accuracy.

Therefore, since the positional accuracy of the punching die attachment part of a drilling apparatus and a drilling die becomes high, the precision of the drilling position in a to-be-processed object can be improved. In addition, since the positional accuracy of the punching die and the die die increases, it is possible to perform clean drilling without burr of the protruding member. Moreover, there is also an effect that a dedicated punching die position adjusting device is not necessary and the cost of the punching device can be reduced.

(13) The punching method of the present invention uses a punching device having a punching mechanism having a punching die for punching a sheet-shaped workpiece and a punching die comprising a die mold, and the punching die and It is a punching method of punching a to-be-processed object in the state which provided the sheet-shaped workpiece interposed between the said die dies, and the space | gap between the said punching die and the die die is a sheet-shaped workpiece The punching is performed in a state larger than the thickness.

For this reason, according to the punching method of this invention, since the punching operation | movement is performed in the state which applied the tension force to the workpiece interposed between the punching die and die die, the curvature of the sheet-shaped workpiece is suppressed effectively, Result The punching operation is performed at the correct angle with respect to the workpiece, so that punching is smoothly removed from the workpiece. For this reason, it becomes possible to perforate in the state in which the space | gap between a punching die and a die die is larger than the thickness of a sheet-like workpiece. That is, the stripper which is conventionally required can be made unnecessary. Therefore, according to the punching method of the present invention, the number of parts of the punching device can be reduced, so that the cost can be reduced and the mold structure can be simplified.

In addition, since drilling is performed in a state in which the workpiece is in a non-pressing state, damage to the workpiece can be reliably suppressed, and quality reliability can be improved.

Moreover, such an effect is that when the punching device is a punching device provided with a feeding mechanism for feeding the sheet-shaped workpiece into a sheet-like workpiece and a winding mechanism for winding the sheet-shaped workpiece in a roll shape, It is 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 lifted at the time of drilling, and only the punching is lifted. Therefore, it becomes easy to speed up the perforation.

(14) The positioning fixing method of the punching die of the present invention includes a punching die attaching portion having a pin positioning hole, and a die die with a pin fitting hole for punching into a sheet-shaped workpiece. A perforation device having a perforation mechanism having a perforation die, wherein the perforation die is a method of positioning and fixing the perforation die to the perforation die attaching part, the positioning pin being the pin insertion hole and the pin fitting hole. Forming a punching die assembly by fitting into the step, placing the drilling die assembly at a predetermined position in the drilling mechanism, and lowering the positioning pin to fit into the positioning hole. And fixing the die die to the punching die attach portion on the die die side, and simultaneously punching the punch die into the punch die. And having the steps of fixing to the perforation die attaching part on the side, and step of lowering the positioning pin further, releasing the fitting with the pin fitting hole to disassemble the perforation mold assembly. It features.

For this reason, according to the positioning fixing method of the drilling die of the present invention, the positioning of the punching die and the die die and the position of the table die and the die are carried out by a simple operation as much as up and down the positioning pin. The crystal can be performed with high precision.

Therefore, since the positional accuracy of a table and a punching die becomes high, the precision of the punching position in a to-be-processed object can be improved. In addition, since the positional accuracy of the punching die and the die die increases, it is possible to perform clean drilling without burr of the protruding member. Moreover, there is also an effect that a dedicated punching die position adjusting device is not necessary and the cost of the punching device can be reduced.

This effect is particularly large when the punching device is a punching device including a feeding mechanism for feeding a roll-shaped workpiece into a sheet shape and a winding mechanism for winding the sheet-shaped workpiece in a roll shape.

(15) In the method for positioning and fixing the punching die according to (14), in the step of forming the punching die assembly, the pin has a pin insertion hole between the punching die and the die die, and is 0.10. Forming a punching die assembly by interposing a spacer having a thickness of ㎜ to 5.0 mm in advance, and in the step of disassembling the punching die assembly, removing the spacer interposed between the punching die and the die die. It features.

By such a configuration, the size of the gap between the punching die and the die die can be controlled with very high accuracy in the range of 0.10 mm to 5.0 mm by a simple method as much as using a predetermined spacer. In addition, since the punching die and the die die are not required to be separated so that a predetermined gap is opened, the parallelism between the bottom surface of the punching die and the top surface of the die can be made very high. This also has the effect of preventing scuffing from occurring between the positioning pin, the pin insertion hole and the pin fitting hole when the positioning pin is moved up and down.

In addition, this means that the dimension 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 a very small dimension. As a result, the positional accuracy in the horizontal direction relative to the punching die and the die die can be increased, which is effective in preventing the occurrence of the projection member burrs caused by the drilling and speeding up the drilling.

1 is a front view showing a punching device according to an embodiment.

2 is a plan view showing a punching device according to the embodiment.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a perspective view showing a punching mechanism of the punching device according to the embodiment.

5 is a local cross-sectional view of FIG. 4.

6 is a side view showing a drilling mechanism of the drilling device according to the embodiment.

7 is a plan view illustrating a drilling mechanism of the drilling device according to the embodiment.

8 is a cross-sectional view taken along line B-B in FIG.

FIG. 9 is an enlarged cross-sectional view of part A of FIG. 8.

Fig. 10 is a perspective view showing a drilling die according to an embodiment.

11 is a diagram showing a drilling die according to the embodiment.

12 is a flowchart for explaining a positioning fixing method of a punching die according to the embodiment.

Fig. 13 is a plan view showing a spacer used for carrying out the positioning fixing method of the punching die according to the embodiment.

Fig. 14 is a sectional view showing a conventional drilling device.

<Explanation of symbols for main parts of the drawings>

100: perforation device

200: device body

222: movable 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: Heavenly Government

730: fixed clamper

742, 744, 752, 754: Roll Shaft

800: perforation apparatus

810: Die for drilling

820: Punching Mold

820A: receiving hole

820F, 820G: Pin Fitting Holes

830: Die Mold

830A: Through Hole

830B, 830C: Pin Insertion Holes

840: light emitting element

850, 851: Punching

870: Cam Shaft

880: imaging device

900: punching die positioning fixing mechanism

910, 911: check member

920, 921: Positioning pin

a: central axis

P: spacer

P ₁ , P ₂ : pin insertion hole

W: Workpiece

EMBODIMENT OF THE INVENTION Hereinafter, the punching device, the punching die, the drilling method, and the positioning fixing method of the drilling die of this invention are demonstrated according to embodiment shown in drawing.

First, the punching apparatus, the punching die, and the punching method which concern on embodiment are demonstrated using FIGS. 1 is a front view showing a punching device according to an embodiment. 2 is a plan view showing a punching device according to the embodiment. 3 is a cross-sectional view taken along the line A-A of FIG.

4 is a perspective view showing a punching mechanism of the punching device according to the embodiment. 5 is a local cross-sectional view of FIG. 4. 6 is a side view showing a drilling mechanism of the drilling device according to the embodiment. 7 is a plan view illustrating a drilling mechanism of the drilling device according to the embodiment. 8 is a cross-sectional view taken along line B-B in FIG. FIG. 9 is an enlarged cross-sectional view of part A of FIG. 8. Fig. 10 is a perspective view showing a drilling die according to an embodiment. 11 is a diagram showing a drilling die according to the embodiment. FIG. 11A is a plan view, and FIG. 11B is a cross-sectional view taken along the line CC of FIG. 11A (but in FIG. Is displayed].

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

As shown in Figs. 1 to 3, the drilling apparatus 100 draws out the apparatus main body 200 for mounting and fixing various mechanisms (to be described later) and the workpiece W in the shape of a roll in a sheet form. A winding mechanism 400 for winding up, a winding mechanism 400 for winding up the sheet-shaped workpiece W extracted from the feeding mechanism 300 after drilling, and the winding mechanism 400 and the feeding mechanism 300 And a pair of tension mechanisms 500 and 600 for tensioning and relaxing the workpiece W between the pairs), and a table moving mechanism 700 interposed between the pair of tension mechanisms 500 and 600, and Drilling mechanism 800 for moving by the table moving mechanism 700 and drilling the workpiece W, and punching die for positioning and fixing the punching die of the drilling mechanism 800 on the table. The positioning fixing mechanism 900 is provided.

The apparatus main body 200 is comprised by the machine die of planar substantially rectangular shape. On the back side of the apparatus main body 200, a controller box 210 incorporating a controller (not shown) for driving control of each mechanism or the like by a setting program is disposed. On both sides of the X-axis direction (left and right directions) of the apparatus main body 200, a substantially L-shaped vertical rising wall 220, 230 having vertical portions 220A, 230A and horizontal portions 220B, 230B is installed. It is. Moreover, the roller supporters 240 and 250 located in the back of each vertical rise wall 220 and 230 are provided in the X-axis direction both sides of the apparatus main body 200, respectively.

The vertical rising walls 220 and 230 are provided with guide surfaces 221 and 231 having a predetermined curvature and for guiding the thick workpiece W. The movable clamper 222 and the fixed clamper 232 which can hold | maintain the workpiece | work W are arrange | positioned in the vertical part 220A, 230A of the vertical rise walls 220 and 230, respectively. In the horizontal portion 230B of the vertical rising wall 230, a fixed clamper 233 capable of holding the workpiece W is disposed.

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

The feeding mechanism 300 has a feeding roller 310 and guide rollers 320 and 321 as shown in FIGS.

The feeding roller 310 is rotatably supported by the upper end of the roller support 240. The roll-shaped workpiece W is fed into a sheet by rotation by the drive of the torque motor 330.

The guide rollers 320 and 321 are arranged side by side at predetermined intervals in the X-axis direction. The guide roller 320 on the left side is configured to guide the thick or thin workpiece, and the guide roller 321 on the right side is configured to guide the thin workpiece.

The winding mechanism 400 has a winding roller 410 and guide rollers 420 and 421. The winding roller 410 is rotatably supported by the upper end part of the roller support 250. Then, the sheet-shaped workpiece W is wound in a roll by rotation by the drive of the torque motor 430.

The guide rollers 420 and 421 are arranged at predetermined intervals in the X-axis direction. The guide roller 420 on the left side is configured to guide a thin workpiece, and the guide roller 421 on the right side is configured to guide a thick or thin workpiece.

The tension mechanism 500 on the left side of the tension mechanisms 500 and 600 has a lifting roller 510, is disposed below the feeding mechanism 300, and is provided on the left side of the apparatus main body 200. As for the lifting roller 510, the roller shaft 510A is pivotally supported by the lifting guide 530 via the slider 540 for free rotation and lifting. The workpiece W is relaxed by the driving caused by the driving of the cylinder 520, and is configured to be tensioned by the falling by the own weight.

The right tension mechanism 600 has a lifting roller 610, is disposed below the winding mechanism 400, and is provided on the right side of the apparatus main body 200. As for the lifting roller 610, the roller shaft 610A is pivotally supported by the lifting guide 630 via the slider 640 for free rotation and lifting. Then, the workpiece W is relaxed by the lift caused by the driving of the cylinder 620, and is configured to be tensioned by the fall due to 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 has a screw shaft 711 and a table 712. The screw shaft 711 extends in the horizontal and horizontal direction (X-axis direction), and is pivotally supported by the center part of the surface width direction of the apparatus main body 200 rotatably. And it is comprised so that rotation by the drive of the servomotor 713 is possible. The table 712 is freely held on the apparatus main body 200 and on the screw shaft 711, and moves forward and backward in the X-axis direction by the rotation of the screw shaft 711 by the driving of the servo motor 713. It is configured to be possible.

The second table moving mechanism 720 has a screw shaft 721 and a table 722. The screw shaft 721 extends in the horizontal and vertical direction (Y-axis direction), and is pivotally supported on the surface of the table 712 by rotation. The servo motor 723 (see Fig. 2) is configured to be rotatable. The table 722 has a positioning hole (not shown) to be fitted to the positioning pin (described later) of the drilling die positioning fixing mechanism 900, and on the table 712 and the screw shaft 721. It is held freely in the phase. And it is comprised so that it may advance and retreat to a Y-axis direction by rotation of the screw shaft 721 by the drive of the servomotor 723. FIG. On the winding mechanism 400 side of the table 722, the fixed clamper 730 which grips the to-be-processed object W and supplies it to the winding mechanism 400 side from the feeding mechanism 300 side is arrange | positioned.

As shown in Figs. 4 to 7, two leg portions 724A and 724B facing each other and a ceiling portion 724C connecting these two leg portions 724A and 724B are provided in the central portion of the upper surface of the table 722. As shown in Figs. The frame 724 of the door form (co-shape) which has is installed upright.

Moreover, the dimension between two leg parts 724A and 724B is set to the dimension larger than the width direction dimension of the to-be-processed object W. As shown in FIG.

Although not shown here, the punching die attaching portion has a punching die attaching portion and a die attaching portion for dies. The punching die attaching portion is provided in the frame 724, and the die attaching portion for the die is provided in the table 722.

The drilling tool 800 has a drilling die 810 and is disposed on the table 722 of the second table moving mechanism 720.

The punching die 810 is made up of a punching die 820 and a die die 830, and is configured to punch the workpiece W. FIG.

The punching die 820 has a base 821, a plate attaching block 822, and a punching plate 823, as shown in Fig. 11, and is formed of a block body having an end shape (with a flange portion) in its entirety. It is. And it is attached to the ceiling part 724C of the frame 724 via the check member 910 (refer FIG. 5). In the center part of the punching metal mold | die 820, the step-shaped accommodating hole 820A opened to the to-be-processed object side is provided. The light receiving element 840 (shown 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 to-be-processed object W. FIG.

In the vicinity of the central portion of the punching die 820 includes two first punching insertion holes 820B, 820C and a central axis of the receiving hole 820A, which are arranged along a virtual plane including the central axis of the receiving hole 820A. Two second punching insertion holes 820D and 820E are provided which are arranged along separate virtual planes orthogonal to one virtual plane. As shown in Figs. 9 and 10, one set of punching holes 850 and 851 is inserted and passed through the first punching insertion holes 820B and 820C. In addition, similarly to the 1st punching insertion hole 820B, 820C, the 1st punching insertion hole 820D, 820E is inserted and passed through 2nd punching insertion hole 820D, 820E. In the corners (corner portions facing each other) of the punching die 820, the outer peripheral portions of the first punching insertion holes 820B and 820C and the second punching insertion holes 820D and 820E are equally spaced apart from each other (180 °). The two pin fitting holes 820F and 820G which are parallel in the circumferential direction are provided.

Punching 850, 851 is connected with the camshaft 870 which rotates by the servo motor 860 via roller shafts 871, 872 etc. as shown to FIG. 8-10. The punchings 850 and 851 are configured to be movable in different lifting paths by the rotation of the cam shaft 870 by the drive of the servo motor 860. For this reason, by changing the rotation area | region of the camshaft 860, any punching (punching 850 in this embodiment) among the punchings 850 and 851 can be selected and used for the drilling of the to-be-processed object W. FIG. The servo motor 860 and the camshaft 870 are arranged on the ceiling 724C of the frame 724.

In the case where the punches 850 and 851 are punches of the same diameter, for example, if the punching 850 is broken during the punching of the same diameter, the punching 851 may be used instead of the punching 850. Attachment, removal and replacement of the punching 850 becomes unnecessary.

In addition, when the punches 850 and 851 are punching of different diameters (for example, punching for through-hole punching and punching for guide-hole punching), punching of different diameters can be performed, The attachment and removal of the punches 850 and 851 due to the change are unnecessary.

The die die 830 has a plate attachment black 831 and a die plate 832, as shown in Fig. 11B, and are entirely formed by a block body having a step shape (with a flange portion). have. And it is arrange | positioned under the punching die 820, and is attached to the table 722 via the check member 911 (refer FIG. 5). In addition, similarly to the punching die 820, the die die 830 is detachably attached to two circumferential positions around the central axis a. For this reason, by changing the attachment position in the die die 830 and the punching die 820, one set of punchings 850 and 851 is selected among the two sets of punchings, and the punching of the workpiece W is performed. Can be used.

Moreover, it is also possible to provide three sets or four sets of punchings with respect to one punching die by making the shape of a punching die and die die into hexagonal or octagonal shapes.

In the center portion of the die die 830, as shown in Fig. 11B, the through-hole for photographing is located on the central axis a of the receiving hole 820A and is opened to the workpiece W side. 830A is provided. Pin insertion holes 830B and 830C which correspond to pin fitting holes 820F and 820G, and which are equally spaced (180 °) and parallel in the circumferential direction are respectively provided at the corners of the die die 830. .

The die die 830 (die plate 832) is provided with die holes (not shown) corresponding to the first punching insertion holes 820B and 820C and the second punching insertion holes 820D and 820E. On the central axis a of the through hole 830A in the die die 830, an imaging device 880 (shown in FIG. 8) for reading the punched position of the workpiece W is arranged. . As a result, the horizontal distances from the imaging element 880 (through hole 830A) to the respective punchings 850 and 851 have the same dimensions, so that each punching 850 is read from the reading of the punching position by the imaging element 880. 851) The horizontal movement time until reaching the punching position of the punching die 810 can be set to the same time.

In addition, when the illumination light by the light emitting element 840 passes through the workpiece W and reads it into the imaging element 880, the reading of the puncturing position is performed effectively.

The drilling die positioning fixing mechanism 900 has the check members 910 and 911 and the positioning pins 920 and 921 as shown to FIG. 5, FIG. 10, and FIG. And in the punching implementation state by the drilling die 810, the space | gap G which has an up-down dimension larger than the thickness of the to-be-processed object W between the punching die 820 and the die die 830 is formed. It is configured to form.

In addition, the vertical dimension of the space | gap G is 0.40 mm, for example, when the thickness of the to-be-processed object W is 0.10 mm. In addition, although the diameters of the punchings 850 and 851 differ also with a drilling target, it is 0.10 mm-5.0 mm, for example.

The check member 910 is attached to the ceiling 724C of the frame 724, and the check member 911 is attached to the widthwise center portion of the table 722. Then, the punching die 820 is fixed to the ceiling portion 724C of the frame 724 by the check member 910, and the die die 830 is fixed by the check member 911 in the width direction of the table 722. It is comprised so that it may be fixed to the center part (below the punching die 820).

The positioning pins 920 and 921 can be fitted to the pin fitting holes 820F and 820G of the punching die 820 as shown in Figs. 10 and 11, and the die die 830 can be fitted. It is formed by a cylindrical body which can be inserted into the pin insertion holes 830B and 830C of the through hole or fitted into a positioning hole (not shown) provided in the table 722. Long holes 920A and 921A are provided at the lower ends of the positioning pins 920 and 921 and penetrate in the pin radial direction, and eccentric shafts 930A and 931A of the pin operators 930 and 931 are inserted therethrough. have. And the positioning pins 920 and 921 are comprised so that it may move to an up-down direction by the rotation operation of the pin operators 930 and 931, respectively.

In order to puncture the workpiece | work W using the punching apparatus 100 comprised in this way, it carries out as shown below.

First, the workpiece W is interposed between the punching die 820 (the punching plate 823 and the die die 830 (the die plate 832). In this case, the punching die 820 is different from the punching die 820. The space | gap G (shown in FIG. 11) set to the dimension larger than the thickness of the to-be-processed object W is formed by the metal mold | die positioning fixing mechanism 900 for drilling.

Subsequently, the feeding mechanism 300, the winding mechanism 400, and the table moving mechanism 700 (the first table moving mechanism 710) are driven in synchronization, and the workpiece W is fixedly fed from the feeding side to the winding side. do. At this time, the workpiece W is given a holding force by the fixed clamper 730, and the holding force by the movable clamper 222 and the fixed clampers 232 and 233 is released.

After that, the movable clamper 222 reciprocates from the feeding side to the winding side, and the clamping force 232 is applied to the workpiece W at this reciprocating position, and the clamping member 232 is fixed to the clamping force. Releases the gripping force by the clamper 730.

When the gripping force by the fixed clamper 730 is released, the movable clamper 222 reciprocates from the winding side to the feeding side with the gripping force applied. Thereby, the to-be-processed object W is given the tension force by the movable clamper 222 and the fixed clamper 232. As shown in FIG. For this reason, the curvature in the sheet-shaped workpiece W interposed between the punching die 820 and the die die 830 is suppressed.

At this time, since the sheet-shaped workpiece W is sandwiched between the upper roll shafts 744 and 754 and the lower roll shafts 742 and 752, the bending is more effectively suppressed.

And when the reference mark (display mark for reading a puncturing position) of the to-be-processed object W is detected by the imaging element 880, the drilling metal mold 810 by the drive of the 1st table moving mechanism 710 [ Punching die 820 and die die 830] are transferred to the perforation region.

Then, the punching die 810 is moved along two horizontal directions crossing at right angles by the drive of the table moving mechanism 700, and the lifting and lowering of the punching 850 by the rotation of the cam shaft 870 is performed. The workpiece W is punched. In this case, by changing the rotational area of the camshaft 870, the punching 851 can be used for the drilling of the workpiece W instead of the punching 850.

In this way, the workpiece W is punched.

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

As described above, the drilling device 100, the drilling die 810, and the drilling 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 punching die 820 and the die die 830, the bending of the workpiece W in the sheet shape is reduced. It is effectively suppressed, and as a result, the punching operation is performed at the correct angle with respect to the workpiece W, and punching is smoothly released from the workpiece W. FIG. For this reason, it becomes possible to perforate in the state in which the space | gap G between the punching metal mold 820 and the die metal mold 830 is larger than the thickness of the workpiece | work W of sheet form. That is, the stripper which is conventionally required can be made unnecessary. Therefore, the number of parts can be reduced, and the cost can be reduced and the mold structure can be simplified.

In addition, since the drilling is performed in a state in which the workpiece W is placed in a non-pressing state, damage to the workpiece W can be reliably suppressed, thereby improving the reliability of the quality.

In addition, since the air gap G between the punching die 820 and the die die 830 is punched in a state larger than the thickness of the sheet-shaped workpiece W, the punching die 820 is used during the drilling. ) Itself does not need to be raised and lowered, and only punchings 850 and 851 are sufficient to raise and lower, so that it is easy to speed up the drilling.

(B) Since the frame 724 is a door-shaped frame having two leg portions 724A and 724B facing each other and a ceiling portion 724C connecting these two leg portions 724A and 724B, a punching die The rigidity of the frame 724 to which the 820 is attached is surely increased.

For this reason, the positional precision of the punching die 820 with respect to the die die 830 can be improved, the occurrence of the burr of the protruding member due to drilling can be prevented, and the punching speed can be coped with.

(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 lifting rollers 510 of the respective tension mechanisms 500 and 600 are provided. The workpiece W is relaxed by the rise of 610, and the workpiece W is again tensioned by the fall.

For this reason, meandering of the to-be-processed object which arises by the feed-out and the winding operation which take a long time can be eliminated, and favorable punching process can be performed.

(D) Since the imaging device 880 for reading the punched position of the workpiece W is disposed on the central axis a of the through hole 830A, the punching die ( 820 and the perforation position can be read in the plane of die die 830.

For this reason, the horizontal movement time from the reading of the punching position by the imaging element 880 to reaching the punching position of the punching die 810 can be shortened, and the punching speed can be increased.

In addition, since the reading of the puncturing position by the imaging element 880 can be performed from the direction perpendicular to the workpiece W, the reading accuracy can be improved.

(E) The drilling die positioning fixing mechanism 900 has two positioning pins 920 and 921 which are movable in the vertical direction, and the positioning pins 920 and 921 are inserted into the drilling die attaching portion. A pin positioning hole to be aligned is provided, and the die die 830 is provided with pin insertion holes 830B and 830C that allow insertion and passing of the positioning pins 920 and 921, and a punching die 820. ) Is provided with pin fitting holes 820F and 820G that allow insertion of the positioning pins 920 and 921 through.

For this reason, the positioning of the punching die 820 and the die die 830 and the punching die attaching part of the punching device 800 are performed by the simple operation of moving the positioning pins 920 and 921 up and down. And positioning with the die die 830 can be performed with high accuracy.

Therefore, since the positional accuracy of the drilling die attaching part of the drilling device 800 and the drilling die 810 becomes high, the precision of the drilling position in the to-be-processed object W can be improved. Moreover, since the positional accuracy of the punching die 820 and the die die 830 becomes high, clean drilling which does not produce the burr of a projection member can be performed. Moreover, there is also an effect that a dedicated punching die position adjusting device is not necessary and the cost of the punching device can be reduced.

Next, the positioning fixing method of the drilling die which concerns on embodiment is demonstrated using FIG. 5 and FIG. 12 is a flowchart for explaining a positioning fixing method of a punching die according to the embodiment. Fig. 13 is a plan view of a spacer used for carrying out the positioning fixing method of the punching die according to the embodiment.

The positioning and fixing method of the drilling die according to the embodiment includes the "forming process for forming the drilling die assembly", "the arrangement process of the drilling die assembly", "the attachment process of the punching die and die die", and the "punching die." Since the disassembly process of granules "is performed sequentially, each of these processes is demonstrated one by one.

Moreover, the positioning pins 920 and 921 used for the positioning fixing method of the punching die which concerns on embodiment are formed in the pin insertion hole 830B, 830C of the die 830 before the formation of the drilling die assembly. It is assumed that the upper end is exposed above the die die 830.

1. Formation process of punching mold assembly

First, the spacer P (shown in FIG. 13) having a thickness (for example, 395 µm) set to a dimension slightly smaller than the vertical dimension (for example, 400 µm) of the void G (shown in FIG. 11). Is formed between the punching die 820 (punching plate 823) and the die die 830 (die plate 832) to form a punching 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 to pass the spacers P on the die plate 832, and the positioning pins 920 , 921 is fitted into the pin fitting holes 820F and 820G to load the punching die 820 on the spacer P, thereby forming a punching die assembly.

2. Placement process of drilling mold assembly

Next, the drilling die assembly formed by "the formation process of the drilling die assembly" is interposed between the upper and lower attachment positions (an attachment surface parallel to each other) in the drilling mechanism 800 (shown in FIG. 5) ( Step S2 of Fig. 12).

3. Attaching process of punching die and die die

Next, by rotating the pin operators 930 and 931 (shown in FIG. 10), the positioning pins 920 and 921 are moved downward to position the holes for positioning the table 722 (not shown). Fit in. Thereby, positioning with respect to the table 722 of the die 830 can be performed with high precision. At this time, the positioning pins 920 and 921 are inserted through the pin insertion holes P ₁ and P ₂ of the spacer P, and pass through the pin fitting holes 820F and 820G of the punching die 820. It is in the state fitted.

Next, the die die 830 is attached to the downward attachment position of the punching mechanism 800 by the check member 911 of the punching die positioning fixing mechanism 900. In this case, since the attachment die 830 is performed by positioning the die die 830 by the positioning pins 920 and 921, the positioning accuracy is increased.

Next, after the punching die 820 is positioned at the upper attachment position of the punching mechanism 800, the punching die 820 is moved by the check member 910 of the punching die positioning fixing mechanism 900. (Step S3 in Fig. 12).

4. Disassembling process of die assembly for drilling

Thereafter, by rotating the pin operators 930 and 931, the positioning pins 920 and 921 are further moved downward to release the fitting with the pin fitting holes 820F and 820G, and at the same time, the punching dies. The spacer P between the 820 and the die die 830 is removed (step S4 in FIG. 12). As a result, the drilling die assembly is disassembled. At this time, the upper ends of the positioning pins 920 and 921 are in a state accommodated in the pin insertion holes 830B and 830C of the die die 830.

When the spacer P is removed, a gap G set between a punching die 820 (punching plate 823) and a die die 830 (die plate 832) with high precision and high parallelism is formed. Is formed.

In this way, the drilling die 810 is positioned and fixed with respect to the drilling tool 800.

As described above, according to the positioning fixing method of the punching die according to the embodiment, the punching die 820 and the die die 830 are as simple as the vertical pins 920 and 921 are moved up and down. And positioning of the table 722 and the die die 830 can be performed with high accuracy.

For this reason, since the positional accuracy of the table 722 and the punching die 810 becomes high, the precision of the punching position in the to-be-processed object W can be improved. Moreover, since the positional precision of the punching metal mold 820 and the die metal mold 830 becomes high, clean drilling which does not produce the burr of a projection member can be performed. Moreover, there is also an effect that a dedicated punching die position adjusting device is not necessary and the cost of the punching device can be reduced.

Furthermore, in the cloth positioning fixation of the common mold method according to the embodiment, the cloth in the step of forming the common mold assembly, between it and the die 820 for punching using a mold 830, the pin insertion holes (P _1, P ₂ ) and a punching die assembly is formed by interposing a spacer P having a thickness of 0.10 mm to 5.0 mm in advance, and the punching die 820 and the die die 830 in the disassembly process of the drilling die assembly. It is comprised so that the spacer P which may interpose between () may be removed.

As a result, the size of the gap between the punching die 820 and the die die 830 can be controlled with a very high accuracy in a range of 0.10 mm to 5.0 mm in a simple manner as much as using a predetermined spacer P. Can be. In addition, since there is no need to separate the punching die 820 and the die die 830 so that a predetermined gap is opened, the degree of parallelism between the lower surface of the punching die 820 and the surface of the die die 830. Can be made very high. As a result, when the positioning pins 920 and 921 are moved up and down, scuffing is performed between the positioning pins 920 and 921, the pin insertion holes 830B and 830C, and the pin fitting holes 820F and 820G. There is also an effect that can be prevented from occurring.

In addition, this 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 positional accuracy in the horizontal direction relative to the punching die 820 and the die die 830 can be increased, which is effective in preventing the occurrence of the projection member bur by the drilling and speeding up the drilling.

As mentioned above, although the punching apparatus, the punching die, the punching method, and the positioning fixing method of the punching die of this invention were demonstrated in accordance with said embodiment, this invention is not limited to said embodiment, The summary It is possible to implement in various forms in the range which does not deviate, for example, the following modification is also possible.

(1) In the above embodiment, a case where the present invention is applied to a punching device for punching out a workpiece drawn from a roll shape into a sheet shape has been described. However, the present invention is not limited to this, and the workpiece has a single shape. The same can be applied to a punching device for punching with respect to.

(2) In the above embodiment, the case where the workpiece is applied to the punching device in which the punching die is moved with respect to the workpiece is described. However, the present invention is not limited thereto, and the workpiece is moved with respect to the punching die. The same applies to the punching device of the system.

Claims (16)

A table moving mechanism having a table movable in two directions crossing at right angles, A punching mechanism disposed on the table, the punching mechanism having a punching die for punching the sheet-shaped workpiece and a die for punching; It is a punching device provided with a means for providing a tension force to the sheet-shaped workpiece interposed between the said punching die and the said die die, In the punching mechanism, the gap between the punching die and the die die is larger than the thickness of the sheet-like workpiece, and the guide pin is not interposed between the punching die and the die die. And a punching mechanism for punching the sheet-shaped workpiece in a state where only the punch of the punching die is lifting and lowering. delete delete The punching device according to claim 1, wherein two upper and lower roll shafts for fitting the sheet-shaped workpiece are provided on both sides of the workpiece region. delete The door-shaped frame according to claim 1 or 4, having two legs facing each other and a ceiling portion connecting the two legs, is installed upright on the table. The die is attached to the table, The punching device, characterized in that the punching die is attached to the ceiling portion of the frame. The feeding mechanism according to claim 1 or 4, wherein the feeding mechanism for feeding out the roll-shaped workpiece into a sheet shape; A winding mechanism for winding a sheet-shaped workpiece in a roll shape; And a pair of tensioning mechanisms disposed between the feeding mechanism and the drilling mechanism and between the drilling mechanism and the winding mechanism, respectively, and having a lifting roller for relaxing and stretching the workpiece. delete delete delete delete delete A drilling mechanism having a table moving mechanism having a table movable in two directions crossing at right angles, and a punching die formed of the punching die and the die die, which are disposed on the table to punch the sheet-shaped workpiece. Using a drilling device provided with In a state where tension is applied to the sheet-shaped workpiece interposed between the punching die and the die mold, in a state where the gap between the punching die and the die die is larger than the thickness of the sheet-shaped workpiece, Perforation is performed to the sheet-shaped workpiece in a state where no guide pin is interposed between the punching die and the die die, and only the punch of the punching die is lifting and lowering. Perforation method. delete delete delete

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