JPH09276955A - Die device and punch press using pie device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of change work of a punch and die. SOLUTION: For positioning the punch and die, plural positioning holes 47 are arranged in either one of a punch block 41 or die block 45, further, a positioning engaging member 49 is arranged in either one of the die block 45 or punch block 41, a locking means holds a positioning/engaging member 49 at the state protruding by a prescribed quantity for a pass line. A pressing device 85 butts a butting member 71 arranged to the die block 45 on the butting member 71 arranged to a die block frame 25 so as to be positioned. A bench block is fixed to the punch block frame by a fixing device for punch block, the die block is fixed to the die block frame by a fixing device for die block.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die apparatus for punching a work located between a vertically opposed punch and a die, and a punch press using the die apparatus, and more particularly to a punch. The present invention relates to a die device in which a punch block for holding and a die block for holding a die are respectively configured to be movable in a horizontal direction, and a punch press using the die device.

[0002]

2. Description of the Related Art A conventional punch press will be briefly described below.

A punch block frame is provided in the upper part of the main body frame so as to be movable in the horizontal direction, and a die block frame vertically opposed to the punch block frame is provided in the lower part of the main body frame so as to be movable in the horizontal direction. Has been. A punch block holding a plurality of punches is detachably provided on the lower side of the punch block frame, and a die block holding a plurality of dies is detachably provided on the upper side of the die block frame. .

Therefore, by moving the punch block frame and the die block frame in the horizontal direction,
A predetermined punch and a predetermined die are positioned at a processing position. Further, the work is moved in the horizontal direction to position the portion to be processed on the work at the processing position. Then, a predetermined punch and a predetermined die are made to cooperate with each other to perform punching processing on a portion to be processed in the work.

[0005]

By the way, when the punch and the die are exchanged, the punch block is placed in the punch block frame and the die block is placed in the die block frame while the punch and the die are aligned with each other. It is not easy to mount each of them, and there is a problem that the work of exchanging the punch and the die becomes complicated.

[0006]

In order to achieve the above object, a die apparatus of the invention according to claim 1 comprises a punch block having a plurality of punches and a plurality of dies corresponding to the punches. And a die block, wherein a positioning hole is provided in any one of the punch block and the die block, and a positioning engaging member that can be engaged with and disengaged from the positioning hole is provided in the other block. It is characterized in that it is provided so that it can appear in and out of the pass line.

Therefore, when the punch block and the die block are respectively separated from the punch block frame and the die block frame, the positioning engagement member provided on the punch block or the die block is projected to the pass line. , The corresponding positioning holes provided in the die block or punch block, respectively. As a result, the punch block and the die block are integrated to separate the punch block from the punch block frame. When mounting the integrated punch block and die block to the punch block frame and die block frame, respectively,
The integrated die block is attached to the die block frame, the punch block is lifted and mounted on the punch block frame, and then the positioning engagement member is immersed in the pass line. This makes it possible to punch the work.

According to a second aspect of the present invention, there is provided a die apparatus in which a punch block and a die block each having a small diameter are arranged near the center of the punch block and the die block, respectively, and the punch block and the die block have peripheral portions. Each has a large diameter punch,
It is characterized by arranging dies.

Therefore, the large-diameter punches and dies which require a large impact force in the punching process are arranged on the periphery of the punch block and the die block, and the small-diameter punches having a low impact force, the die block and the central portion of the die block. Since it is arranged in the above position, the amount of bending of the punch block and the die block due to the load during punching becomes small.

In the punch press of the invention according to claim 3, a punch block frame is provided on the upper part of the main body frame so as to be horizontally movable, and a die block frame is provided on the lower part of the main body frame so as to be horizontally movable. A punch press in which a punch block for holding a punch is detachably provided in a frame, and a die block for holding a die is detachably provided in the die block frame, wherein the punch is used for positioning the punch and the die. A positioning hole is provided in either one of the block and die block, and a plurality of positioning engaging members that can be engaged with and disengaged from the positioning hole are provided in the other block, and each positioning engaging member appears and disappears from the pass line. It is characterized by being provided freely.

Therefore, when the punch block and the die block are taken out from the punch press, for example, the positioning engagement member of the die block is engaged with the positioning hole of the punch block to disengage the predetermined punch block from the punch block frame. The die block integrated with the punch block is removed from the die block frame. When the punch block is mounted on the punch block frame and the die block is mounted on the die block frame, first, the plurality of positioning engagement members in each die block are projected to the pass line outside the punch press. Then, the corresponding punch block and die block are integrated by engaging with the corresponding positioning holes respectively. Alternatively, a punch block and a die block stored in such a manner that the punch and the die are aligned with each other are used.

Next, when a predetermined punch block is mounted on the punch block frame and a predetermined die block is mounted on the die block frame, respectively, the predetermined punch and the predetermined die are aligned with each other. , A predetermined die block integrated with a predetermined punch block is transferred to the upper side of the die block frame. By further projecting the plurality of positioning engagement members in the predetermined die block with respect to the pass line, the punch block is pushed up and the upper side is brought into contact with the mounting surface (lower side surface) of the punch block frame from below.

When punching a workpiece using the punch block and die block thus mounted, the positioning engagement members of the die block are first immersed in the path lines. Thereby, the interference between the work and the positioning engagement member can be avoided. Next, by moving the punch block frame and the die block frame in the horizontal direction, the predetermined punch and the predetermined die are positioned at the processing position. or,
The work is moved in the horizontal direction to position the work part of the work at the processing position. Then, a predetermined punch and a predetermined die are made to cooperate with each other to perform punching processing on a portion to be processed in the work.

According to a fourth aspect of the present invention, in the punch press of the third aspect, before the punch block according to the third aspect is mounted on the punch block frame, a vertical gap between the upper side of the punch block and the lower side of the die block is set to the punch block frame. In order to maintain a predetermined distance smaller than the vertical clearance between the mounting surface of the die block frame and the mounting surface of the die block frame,
Locking means for holding each of the positioning engagement members in a state of protruding by a predetermined amount with respect to the pass line are provided.

Therefore, when the punch block is to be disengaged from the punch block frame, the plurality of positioning engaging members are moved in the direction in which they are retracted with respect to the pass line, and the locking means causes only a predetermined amount with respect to the pass line. A plurality of positioning engagement members are held so as to be in a protruding state. As a result, the total height of the punch block and the die block is smaller than the clearance between the punch block frame and the die block frame. Also, when mounting the punch block and the die block, similarly, the vertical height of the lower side of the punch block and the die block is vertically determined by the locking means between the mounting surface of the punch block frame and the mounting surface of the die block frame in the vertical direction. It is transferred to the die block frame while being kept at a predetermined interval smaller than.

According to a fifth aspect of the present invention, there is provided a punch press, wherein the die block according to the third or fourth aspect is provided with an abutting member, the die block frame is provided with a positioning member, and the die block is mounted on the die block frame. Prior to this, a pressing device for pressing the other side of the die block in one direction is provided in order to abut the abutting member against the positioning member.

Therefore, before pushing up the predetermined die block, the other side of the predetermined die block is pushed in one direction by the operation of the pressing device to push the abutting member against the positioning member. This makes it possible to mount a predetermined punch block on the punch block frame at a predetermined position and a predetermined die block at a predetermined position of the die block frame.

A punch press according to a sixth aspect of the present invention pushes each of the positioning engagement members in order to bring the upper side of the punch block of the third, fourth or fifth aspect into contact with the mounting surface of the punch block frame from below. It is characterized in that a lifting device for lifting is provided.

Therefore, a plurality of positioning engaging members are pushed up by the operation of the pushing device to raise the punch block,
The upper side of the punch block is brought into contact with the mounting surface of the punch block frame.

The punch press of the invention according to claim 7 is provided with a punch block fixing device for fixing the punch block according to claims 3 to 6 to the punch block frame, and the die block is fixed to the die block frame. It is characterized in that it is provided with a die block fixing device which can be fixed by pressing.

Therefore, the predetermined punch block is fixed to the punch block frame by the operation of the punch block fixing device, and the predetermined die block is fixed to the die block frame by the operation of the die block fixing device. . Alternatively, the punch block fixing device is operated to release the fixed state of the predetermined punch block from the punch block frame to separate the predetermined punch block from the punch block frame, and the die block fixing device is operated to operate the die block frame. The fixed state of the predetermined die block with respect to is released, and the predetermined die block integrated with the predetermined punch block is separated from the die block frame.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIGS. 7 and 8, the punch press 1 according to the embodiment of the present invention is based on a gate-shaped main body frame 3, which is vertically (upper and lower in FIG. 7). , Front and back facing the paper in FIG. 8)
And an upper frame 5 and a lower frame 7 facing each other. Support frames 9 are provided in front of and behind the lower frame 7 (front and back in FIG. 7, facing up and down in FIG. 7, and up and down in FIG. 8), and a plate-like work W is provided in each support frame 9 in the front-back direction (X-axis). Work tables 11 are provided so as to be movable in each direction.

Each support frame 9 is provided with a work positioning device 13 for moving and positioning the work W in the X-axis direction. That is, a carriage base 15 extending in the left-right direction (Y-axis direction, left-right direction in FIGS. 7 and 8) is provided on each support frame 9 so as to be movable in the X-axis direction.
Each carriage base 15 is provided with a pair of carriages 19 each having a plurality of work clamps 17 for clamping the right end portion or the left end portion of the work W.

A mold moving body 21 is provided on the main body frame 3 so as to be movable in the Y-axis direction.
The punch block frame 23, the die block frame 25, and the punch block frame 23
And an upper and lower connecting member 27 having, for example, a C shape, the upper end of which is integrally connected to the base of the die block frame and the lower end of which is connected to the base of the die block frame 25.

The upper frame 5 is provided with a pair of upper guide rails 29 for movably supporting the punch block frame 23 in the Y-axis direction and extending in the Y-axis direction, and the lower frame 7 is provided with a die block frame. 25 for Y
A pair of lower guide rails 3 movably supported in the axial direction
1 is provided substantially parallel to the upper guide rail 29.

To move the mold moving body 21 in the Y-axis direction to an appropriate position of the main body frame 3, the mold moving body servo motor 33 and the mold moving body Y which can be rotated by the driving of the servo motor 33. The axial ball screw 35 is provided so as to extend in the Y-axis direction, and the punch block frame 2 is provided.
A nut member 37 screwed into the Y-axis ball screw 35 is provided at an appropriate position of 3.

Referring to FIGS. 1 to 4, a plurality of punches 39 are provided on the lower side of the punch block frame 23 (lower side in FIGS. 1 to 4) in the X-axis direction (in FIGS. 1 and 3). 2 and FIG. 4) and the Y-axis direction (left and right in FIGS. 1 and 4 and front and back toward the paper in FIGS. 2 and 3) at appropriate intervals. A die block 45 (details of which will be described later) that holds a plurality of dies 43 at appropriate intervals in the X-axis direction and the Y-axis direction is provided on the upper side of the die block frame 25. It is detachably installed.

Here, as shown in FIG. 3, the die block 45 is provided with a work support plate 45a on the upper side, and work support tables 46L, 46L are provided on the left and right sides of the work support plate 45a in the die block frame 25, respectively.
46R is provided.

In order to position the dies 43 corresponding to the plurality of punches 39, respectively, as shown in FIGS. 1 and 2, a plurality of positioning holes (positioning bushes) 47 are provided below the punch block 41. In addition, the die block 45 has positioning pins 4 as a plurality of positioning engaging members that can engage with the positioning holes 47.
9 are provided. Each positioning pin 49
The die block 45 is supported by a support hole 51 provided so as to be able to move up and down, and is configured to be capable of appearing and retracting with respect to the pass line. A spring 53 that can bias the positioning pin 49 upward is provided in the support hole 51.

Before mounting the punch block 41 on the punch block frame 23, the vertical gap between the upper side of the punch block 41 and the lower side of the die block 45 is set to the mounting surface (upper side surface) of the punch block frame 23 and the die block frame. In order to maintain a predetermined interval smaller than the vertical clearance of the mounting surface (lower side surface) of No. 25, as shown in FIG. 2, each positioning pin 49 is projected by a predetermined amount with respect to the supporting height position of the die 43. Locking means 55 for holding the state
Are provided respectively.

That is, a lock cylinder (pneumatically driven) 59 having a lock pin 57 is provided at a position close to each support hole 51 in the die block 45, and the lock pin 57 has an inclination formed on the positioning pin 49. The engagement portion 61 can be engaged. Here, after the lock pin 57 and the inclined engagement portion 61 are engaged with each other, the engagement state between the lock pin 57 and the inclined engagement portion 61 is released by raising the positioning pin 49. After projecting the positioning pin 49 further than a predetermined amount, the positioning pin 4
The lock pin 57 and the inclined engaging portion 61 are configured to engage with each other when 9 is lowered.

As shown in FIGS. 1 and 2, the die block frame 25 has a pair of support members 63 extending in the Y-axis direction.
Is provided, and each support member 63 is attached to the die block 45.
Is provided with a plurality of support rollers 65 for movably supporting the lower surface thereof in the Y-axis direction. Each support member 63 is supported by a lift guide 67 provided on the die block 45 so as to be able to move up and down, and is moved up and down by the operation of a support member lift cylinder 69 provided at an appropriate position on the die block 45.

Referring to FIG. 5, in order to position the die block 45 at a predetermined position in the die block frame 25, a flat plate-shaped first abutting member 71 and a V-shaped member are provided on the left side of the die block 45 in FIG. The second butting member 73 is provided, and the first positioning member 75 and the second butting member 73 that can be abutted by the first abutting member 71 can be abutted at appropriate positions of the die block frame 25. A second positioning member 77 is provided.

Before mounting the die block 45 on the die block frame 25, the first abutting member 71 is moved to the first position.
Since the second abutment member 73 is abutted against the positioning member 75 and the second abutment member 77, respectively, as shown in FIG. 1, the right side of the die block 45 is pressed leftward at an appropriate position on the right side of the die block frame 25. Pressing device 7
9 are provided.

The pressing device 79 includes a pressing roller 81.
1 and a swing link 83 provided on the right side of the die block frame 25 so as to swing in the left-right direction in FIG. 1, and a right side of the die block frame 25 in FIG. 1 for swinging the swing link 83. The pressing cylinder 85 is provided so as to be swingable in the Y-axis direction.

Here, in order to detect that the first butting member 71 hits the first positioning member 75 and the second butting member 73 hits the second positioning member 77, the die block frame 25 in FIG. 5 is detected. Die block 4 at the left appropriate position
5 is provided with an abutment detection sensor 87 capable of abutting (see FIG. 5), and the detection of the abutment detection sensor 87 causes the support member 63 to die block through the control device (not shown). The supporting member elevating cylinder 69 is controlled so as to be immersed in the mounting surface of the frame 25.

Further, in order to bring the upper side of the punch block 41 into contact with the mounting surface of the punch block frame 25, as shown in FIG. 2, the die block frame 25 has a push-up cylinder for pushing up the corresponding positioning pins 49. 89 are provided respectively. Here, when the abutting member 71 (73) is abutted against the positioning member 75 (77), the cylinder body 91 of each push-up cylinder 89 is configured to be positioned below the corresponding support hole 51. is there.

Referring to FIG. 1, the die block frame 25 is provided with a plurality of die block Y-axis guides 93 for movably supporting the front and rear sides of the die block 45 in the Y-axis direction. The punch block frame 23 is provided with a plurality of Y-axis guides 95 for punch blocks, each of which supports the front side and the rear side of the punch block 41 so as to be movable in the Y-axis direction. Further, since the die block 45 is fixed to the die block frame 25, the die block 4 is attached to the die block frame 25.
5, a plurality of die block fixing clamps 97 for clamping the step portions formed on the front side and the rear side of the punch block 5 are provided, and a plurality of punch blocks for clamping the step portions formed on the front side and the rear side of the punch block 41, respectively. Fixed clamp 99 is provided.

Referring to FIGS. 3 and 4, a striker 101 for pressing a predetermined punch 39 from above is provided above the punch 39.
1 is movable in the V-axis and U-axis directions parallel to the Y-axis direction and the X-axis direction. More specifically, the cylinder carriage 103 is provided in the concave portion 23a of the punch block frame 23.
03 is movable in the V-axis direction by the operation of the striker V-axis ball screw 105 and the V-axis servomotor 107. The cylinder carriage 103 is supported by the upper guide rail 29 so as to be movable in the V-axis direction.

A hydraulic cylinder 109 having a striker 101 connected to the cylinder carriage 103.
The hydraulic cylinder 109 is provided with a striker U-axis ball screw 111 and a U-axis servo motor 113.
Can be moved in the X-axis direction.

On the other hand, the punch block 41 is shown in FIG.
The arrangement of the punch 39 in FIG. 6 is shown in FIG.
The die block 4 corresponding to the punch block 41.
The layout of die 43 at 5 is shown. That is,
The large-diameter punch 39A and the die 43A are arranged at the peripheral portions of the punch block 41 and the die block 45, respectively, and the small-diameter punch 39B and the die 43B are concentrated in the central portion.

Therefore, the punch block 4 has a large diameter punch 39A which requires a large impact force during punching.
1. A small diameter punch 39B for punching with a small striking force in the center of the punch block 41 at the peripheral edge of the punch block 41.
Therefore, the amount of bending of the punch block 41 and the die block 45 due to the striking force can be suppressed.

The operation of the embodiment of the present invention will be described based on the above-mentioned configuration.

When the punch block 41 is attached to the punch block frame 23 and the die block 45 is attached to the die block frame 25, a plurality of positioning pins 49 in each die block 45 are attached to the pass line outside the punch press 1. By making each of them protrude, the corresponding positioning holes 47 are engaged.
As a result, the punch blocks 41 and the die blocks 45 corresponding to each other are integrated, and the punch blocks 41 and the die blocks 45 are combined under the condition that the punches 39 and the corresponding dies 43 are aligned with each other. Can be stored.

Here, each locking means 55 holds the corresponding positioning pin 49 in a state of protruding by a predetermined amount with respect to the pass line. This allows the punch block 4
The height from the upper side of 1 to the lower side of the die block 45 can be maintained at a predetermined height smaller than the vertical clearance between the mounting surface of the punch block frame 23 and the mounting surface of the die block frame 25.

When the predetermined punch block 41 is mounted on the punch block frame 23 and the predetermined die block 45 is mounted on the die block frame 25, the supporting member 63 is lifted by operating the supporting member elevating cylinder 69. The frame 25 is projected to the mounting surface.

Next, the die 4 corresponding to the plurality of punches 39 is formed.
Under a state where the cores of 3 are aligned, the predetermined die block 45 integrated with the predetermined punch block 41 is transferred onto the supporting member 63 from the right direction. Then, by operating the pressing cylinder 85 to swing the swing link 83 to the left, the predetermined die block 45 is moved to the left (one direction in the Y-axis direction) to move the first butting member 71. To the first positioning member 75 and the second butting member 73
Are abutted against the second positioning members 77, respectively.

The abutment on the positioning members 75 and 77 is detected by the abutment detection sensor 87, and the detection is used to control the supporting member elevating cylinder 69 to lower the supporting member 63 to the mounting surface of the die block frame 25. Immerse yourself in. As a result, the predetermined die block 45 is supported at a predetermined position on the mounting surface of the die block frame 25.

After the predetermined die block 45 is supported on the mounting surface of the die block frame 25, the corresponding positioning pins 41 are pushed up by the operation of the push-up cylinders 89 to push up the predetermined punch block 41, and the predetermined punch. Punch block frame 2 above block 41
Make contact with the mounting surface of 3.

A plurality of die block fixing clamps 97 clamp a predetermined step of the die block 45, and a plurality of punch block fixing clamps 99.
The predetermined step portion of the punch block 41 is clamped by.

When punching a plate-like work W, the pushing-up state is released by the operation of each pushing-up cylinder 89, so that the urging force of the spring 53 works together with a predetermined action. The positioning pins 49 of the die block 45 are immersed in the pass line.
Thereby, the interference between the work W and the positioning pin 49 can be avoided.

Then, move the mold moving body 21 to the servo motor 33.
By moving the punch block frame 23 and the die block frame 25 in the Y-axis direction by driving
A predetermined punch 39 and a predetermined die 43 are positioned at the processing position. Further, while the workpiece W is clamped by the plurality of workpiece clamps 17, the carriage base 15 is moved in the X-axis direction to position the workpiece portion of the workpiece W at the machining position.

After the positioning of the punch 39 and the die 43 and the positioning of the work W are completed, the striker V-axis servomotor 107 drives the cylinder carriage 103 in the V-axis direction and the striker U-axis servo. The hydraulic cylinder 10 is driven by driving the motor 113.
9 is moved in the U-axis direction.

As a result, the striker 101 can be positioned vertically above the predetermined punch 39. Then, the striker 101 is lowered by the operation of the hydraulic cylinder 109, and the predetermined punch 39 is pressed from above, whereby the predetermined punch 39 and the die 43 cooperate with each other to punch the workpiece W to be processed. Perform processing.

When the predetermined punch block 41 is to be removed from the punch block frame 23 and the predetermined die block 45 is to be removed from the die block frame 25, the positioning of the predetermined die block 45 is performed by the operation of each lifting cylinder 89. The pins 49 are respectively projected with respect to the pass lines so as to be engaged with the corresponding positioning holes 47, respectively. As a result, the predetermined punch block 41 and the predetermined die block 45 are integrated again.

Next, the clamped state of the plurality of punch block fixing clamps 99 is released, and the positioning pins 47 of a predetermined die block 45 are moved downward by the action of the weight of the predetermined punch block 41 to a predetermined position. The punch block 41 of No. 1 is detached from the punch block frame 21. At this time, the respective locking means 55 hold the respective positioning pins 49 in a state of protruding by a predetermined amount with respect to the supporting height position of the die 43.

After the predetermined punch block 41 is removed from the punch block frame 23, the clamp state of the plurality of die block fixing clamps 97 is released, and the supporting member 63 is lifted by the operation of the supporting member elevating cylinder 69. Then, the die block frame 25 is caused to protrude from the mounting surface. Then, the predetermined die block integrated with the predetermined punch block 41 is moved rightward (the other direction of the Y-axis direction) on the support member 63. As a result, the predetermined die block 45 can be separated from the die block frame 25.

According to the embodiment of the present invention, each of the positioning pins 49 of the die block 45 is engaged with the corresponding positioning hole 47, so that the punch 39 and the die 4 can be made.
The punch block 41 and the die block 45 can be easily mounted on the punch block frame 23 and the die block frame 25, respectively, under the condition that the cores of the punches 3 are aligned, and the efficiency of the replacement work of the punch 39 and the die 43 is improved. improves.

The present invention is not limited to the above-described embodiment, but can be embodied in other forms by making appropriate changes. That is, in the above-described embodiment, the punch block 41 is provided with the positioning hole 47, and the die block 45 is provided with the positioning pin 4.
9 is provided, conversely, the punch block 41 is provided with the positioning pin 49 and the die block 45 is provided with the positioning hole 4
Even if 7 is provided, the same action and effect can be obtained.

[0061]

As described above, in the die apparatus according to the invention of claim 1, the positioning engagement member provided on the punch block or the die block is made to project with respect to the pass line to allow the die block or the punch. The punch block and the die block can be integrated by engaging with the corresponding positioning holes provided in the block. As a result, the mold device can be easily attached and detached, transported, stored, and the like, and accurate alignment can always be performed. Further, by immersing the positioning engaging member in the pass line during punching, it is possible to avoid interference with the work and perform punching.

In the die apparatus according to the second aspect of the present invention, the large-diameter punch and die that require a large impact force in punching are arranged at the peripheral portions of the punch block and the die block, and the small-diameter punch and die have a low impact force. Since was placed in the center of the punch block and die block,
The amount of bending of the punch block and die block during punching can be suppressed.

In the punch press according to the invention of claim 3,
The punch block and the die block can be easily integrated by engaging the positioning engagement member of the die block with the positioning hole of the punch block. As a result, the punch block can be easily attached to and detached from the punch block frame, and the die block can be easily attached to and detached from the die block frame, so that the efficiency of the punch and die replacement work is improved. In addition, transfer and storage are easily performed. On the other hand, when performing punching, it is possible to avoid the interference between the work and the positioning engaging member by immersing the positioning engaging member of the die block in the path line.

In the punch press according to the invention of claim 4,
By moving the positioning engagement member in the direction to be retracted with respect to the pass line and holding the positioning engagement member by the locking means so that the positioning engagement member protrudes by a predetermined amount from the pass line, the punch block and The overall height of the die block can be kept smaller than the clearance between the punch block frame and the die block frame. This facilitates the attachment / detachment of the punch block and the die block.

In the punch press according to the invention of claim 5,
The pressing device presses the die block in a predetermined direction to bring the abutting member into contact with the positioning member, whereby the predetermined punch block can be positioned at a predetermined position of the punch block frame. As a result, the punch block and the die block can be accurately mounted at predetermined positions.

In the punch press according to the invention of claim 6,
Since the push-up device pushes up the positioning engagement member to raise the punch block, the upper side of the punch block can be brought into contact with the mounting surface of the punch block frame, so that the punch block can be easily attached and detached.

In the punch press according to the invention of claim 7,
The punch block fixing device can fix the punch block to the punch block frame, and the die block fixing device can fix the die block to the die block frame.

[Brief description of drawings]

FIG. 1 is a sectional view showing a mold device according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a cross-sectional view showing a mold device applied to a punch press.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

5 is a view taken along line VV in FIG. 1. FIG.

FIG. 6 is a plan view showing a punch block and a die block.

FIG. 7 is a cross-sectional view showing a punch press.

FIG. 8 is a plan view of the punch press seen from the direction VIII in FIG.

[Explanation of symbols]

3 body frame 23 punch block frame 25 die block frame 39 punch 39A large diameter punch 39B small diameter punch 41 punch block 43 die 43A large diameter die 43B small diameter die 45 die block 47 positioning hole 49 positioning pin (positioning engaging member) ) 55 locking means 71, 73 butt member 75, 77 positioning member 85 pressing cylinder (pressing device) 89 lifting cylinder (pressing device) 97 die block fixing clamp (die block fixing device) 99 punch block fixing clamp (Fixing device for punch block)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area B21D 37/14 B21D 37/14 H

Claims (7)

[Claims] 1. A die apparatus comprising a punch block having a plurality of punches and a die block having a plurality of dies corresponding to the respective punches, wherein either the punch block or the die block is provided. A mold apparatus, wherein one block is provided with a positioning hole, and the other block is provided with a positioning engagement member which can be engaged with and disengaged from the positioning hole so as to be retractable from a path line. 2. A punch having a small diameter and a die are arranged near the center of each of the punch block and the die block, and a punch and a die having a large diameter are arranged at the peripheral portions of the punch block and the die block, respectively. The mold apparatus according to claim 1, wherein: 3. A punch block in which a punch block frame is provided in the upper part of the main body frame so as to be movable in the horizontal direction, and a die block frame is provided in the lower part of the main body frame in the horizontal direction, and which holds a punch in the punch block frame. And a die block which holds the die on the die block frame in a detachable manner, wherein either the punch block or the die block is used for positioning the punch and the die. The block is provided with a positioning hole, the other block is provided with a plurality of positioning engaging members which can be engaged with and disengaged from the positioning hole, and each positioning engaging member is provided so as to be retractable from the pass line. Characteristic punch press. 4. Before mounting the punch block on the punch block frame, a vertical gap between the upper side of the punch block and the lower side of the die block is set between the mounting surface of the punch block frame and the mounting surface of the die block frame. In order to maintain a predetermined interval smaller than the vertical clearance, lock means for holding each of the positioning engagement members in a state of protruding by a predetermined amount with respect to the pass line is provided. The punch press according to item 3. 5. A butting member is provided on one side of the die block, a positioning member is provided at the die block frame, and the butting member is butted against the positioning member before the die block is mounted on the die block frame. Therefore, the punch press according to claim 3 or 4, further comprising a pressing device that presses the other side of the die block in one direction. 6. A push-up device that pushes up each of the positioning engagement members in order to bring the upper side of the punch block into contact with the mounting surface of the punch block frame from the lower side. The punch press according to 4 or 5. 7. A punch block fixing device for fixing the punch block to the punch block frame, and a die block fixing device for fixing the die block to the die block frame. The punch press according to claim 3, 4, 5, or 6.