JPH0985358A - Die device for forming claw in punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forming method of an engaging claw for a plate material for positioning by which welding and grinding works for treating the surface of the plate material is unnecessary. SOLUTION: A claw forming punch 17 is composed of a guide cylinder 25 and a punch body 30 fitted to an upper fitting plate 18, a counter sink edge 41 for forming the claw hinged to the guide cylinder so as to face to the inner surface 40a of a holding member 40 fixed to the inner wall surface of the guide cylinder so as to abut on the lower end part 31 of a punched punch body and having the sliding surface 41b slidingly contacting with the lower end part 36 of the punch body and also, forming the engaging claw 55 for positioning at the upper surface of the plate material W supported as the holizontal state at the lower end part of the holding member and also, on a lower fitting plate 20 and a spring member 50 energizing the counter sink edge for forming the claw to the direction separated from the inner surface of the holding member when the punch body rises with the force of a returning spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal mold device for forming a nail in a punch press, and more particularly to a metal mold for forming a nail in a punch press used by being mounted on a punch press such as a turret punch press and a set press. Regarding the mold device.

[0002]

2. Description of the Related Art Conventionally, as a die device for a punch press (for example, a turret punch press), there is an example as shown in FIG. That is, reference numeral 70 denotes a rotatable lower mounting plate having a punched scrap hole 71 in the vertical direction.
A large-diameter fitting hole 72 communicating with the punched scrap hole 71 is formed in the upper part of the. Then, in the fitting hole 72,
For example, a die 74 having a recess 73 is fitted so as to slightly project.

On the other hand, reference numeral 75 is a rotatable upper mounting plate provided with a projection forming punch 76 which can face the die 74 on a vertical line. Thus, the protrusion forming punch 76
Is a guide cylinder 77 fixedly fitted in the through hole of the upper mounting plate 75, and a lower end portion 78 side is slidably guided by the guide cylinder 77 and an upper end protruding from the upper surface of the upper mounting plate 75. The punch head 78 on the side of the section hits the impactor 80 against the spring force of the return spring 79 and punch body 81.
It is composed of

In the turret punch press die assembly having the above construction, however, the upper mounting plate 75 descends as indicated by the phantom line, and then the impact device (not shown) operates.
The impactor 80 is a plate material W1 positioned on the die 74.
When is hit, the positioning projections 82 are formed on the lower surface of the plate material W1, while the recesses 83 are formed on the upper surface of the plate material W1 opposite to the positioning projections 82.

By the way, when the plate member W1 having the positioning projection 82 formed on one side surface and the plate member W2 having the through small hole 84 are joined to each other, first, as shown in FIG. 82, and then FIG.
As shown by 5, at appropriate positions of the plate material W1 and the plate material W2,
So-called spot welding is performed.

However, when the plate materials W1 and W2 are joined while using the nail forming die apparatus having the above-mentioned structure, the outer surface (lower surface) of one of the plate materials W1 and W2 integrally joined is Since the recessed portion 83 in a trace state still remains, there is a problem that the recessed portion 83 needs to be appropriately filled later by a welding operation and polished flat.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, the present invention has a first object to provide a plate member having engaging claws for positioning when forming a frame of an electronic device or the like. Even if the engaging claw is joined to a plate material having a small through-hole with which the engaging claw is engaged, welding and polishing operations are unnecessary because the surface side of the portion where the engaging claw is formed is aesthetically treated later. To obtain a die device for forming a nail in a punch press capable of forming a plate material. A second object is that the nail forming punch corresponding to the upper die and the die corresponding to the lower die can have a simple structure, and the engaging pawl can be easily and reliably engaged with the surface of the plate for positioning. Can be formed.

[0008]

SUMMARY OF THE INVENTION A claw forming die device in a punch press according to the present invention comprises a lower mounting plate 20 having a die 19 in a recess 23, and a vertical line to the die 19. A nail forming die device in a punch press, which comprises an upper mounting plate 18 having a facing nail forming punch 17, wherein the nail forming punch 17 is fixedly fitted in a through hole of the upper mounting plate 18. The guide tube 25 to be worn, and the lower end portion 31 side is slidably guided by the guide tube 25,
The punch body 27 on the upper end side protruding from the upper surface 18a of the upper mounting plate 18 strikes the impactor 14 against the spring force of the return spring 33, and the punch body 30 hit by the strike. A pressing member 40 fixed to the inner wall surface of the lower end portion of the guide cylinder 25 so as to come into contact with the lower end surface 34 of the lower end portion 31, and axially supported by the guide cylinder 25 so as to face the inner surface 40d of the pressing member 40, and A slide surface 41b which is in sliding contact with the taper surface 35 of the projection 36 provided on the lower end 31 of the hit punch body 30.
And a claw forming spot facing blade 41 for forming a positioning engaging claw 55 on the upper surface of the plate material W supported horizontally on the lower mounting plate 20 together with the lower end of the pressing member 40. When the punch body 30 provided on the pressing member 40 is raised by the spring force of the return spring 33,
And a spring member 50 for urging the nail-forming spot facing blade 41 in a direction away from the inner surface 40d of the pressing member 40.

In the above construction, the spot facing blade 4 for forming the nail is formed.
The spring member 50A that biases 1A in the direction away from the inner surface 40d of the pressing member 40A may be attached to the horizontal shaft 42A that pivotally supports the nail forming spot facing blade 41A.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention shown in the drawings will now be described with reference to NC control command signals.
A case where the turret punch press in which the plate material positioning device, the hitting device, etc. are controlled will be described. The use of the present invention is not limited to the use of the turret punch press, and it can be attached to, for example, a set press.

First, an example of the entire usage state of the present invention will be described with reference to FIGS. 1 is a turret punch press. The frame of the turret punch press 1 is basically composed of a lower frame 2 and an upper frame 3 integrally provided on the lower frame 2. A space 4 is formed between the lower frame 2 and the upper frame 3.

Next, 5 is a positioning device for positioning the plate material W. The plate material positioning device 5 is arranged on one end side (the right side in the figure) of the upper surface of the lower frame 2. Therefore, the plate material positioning device 5 is provided with a movable table 7 movably provided in the left-right direction (for example, the X axis) via a rail 6 provided on the upper surface of the lower frame 2, and a rail on the movable table 7. The carriage 8 is provided so as to be movable in the front-rear direction (for example, the Y axis), and a clamp 9 that is provided on the carriage 8 and holds the plate material W in a horizontal state.

Next, 11 is a striking device provided at an appropriate position on the upper frame 3, and a plurality of striking devices 11 are provided in this embodiment. The striking device 11 is built in the upper frame 11 and is driven by a drive source such as hydraulic pressure or a drive motor, and a ram 13 provided on the upper frame 11 so as to move up and down by the driving means 12.
And an impactor 14 provided on the ram 13 and hitting a claw forming punch 17 of a claw forming mold device 16 of the present invention described below.

Therefore, the nail device 16 of the present invention is formed.
Are arranged in the space 4 of the turret punch press 1, for example. For convenience, the structure of the nail forming mold device 16 is 2
When divided into two, a rotatable upper mounting plate 18 having a claw forming punch 17 as an upper mold (for positioning), and a die 1 facing the upper mounting plate 18 and serving as a lower mold.
And a rotatable lower mounting plate 20 with 9.

The upper mounting plate 18 is formed in a disk shape, and rotates in a horizontal state via an upper rotation shaft 21 that is rotated by a drive source (not shown). On the other hand, the lower mounting plate 20 also rotates in a horizontal state via a lower drive shaft 22 that is rotated by a drive source (not shown). The upper rotary shaft 21 and the lower drive shaft 22 are separate bodies, but are configured to rotate in the same direction in synchronization.

Therefore, the nail forming punch 17 as the upper die (for positioning), which is the main part of the present invention, will be described first. The claw forming punch 17 is provided on the upper mounting plate 18 in the first embodiment shown in FIG.

Reference numeral 25 denotes a guide tube which is vertically fitted in the through hole of the upper mounting plate 18. This guide tube 2
5 is fixedly provided on the upper mounting plate 18. A stopper flange portion 25a protruding from the upper surface 18a of the upper mounting plate 18 is formed at the upper end portion of the guide cylinder 25, but no flange portion or the like is formed at the lower end portion thereof.
It is substantially flush with the lower surface 18b of the upper mounting plate 18.

Next, 26 is a flange portion 25 of the guide cylinder 25.
It is a retainer collar fixedly provided on the upper surface of a. On the other hand, 27 is a cylindrical punch head which is provided above the retainer collar 26 and is hit by the impactor 14 of the impact device 11 described above. The punch head 27 has a female screw portion 28 in the axial direction.

Next, in 30, the lower end portion 31 side is slidably fitted in the guide tube 25, and the upper end portion side is the male screw portion 32.
The punch body is screwed to the female screw portion 28 of the punch head 27 via the. Therefore, punch body 30
And the punch head 27 are integrated. This punch body 3
Zero is biased upward by a return spring 33 wound between the punch head 27 and the retainer collar 26.

Therefore, the lower end portion 31 of the punch body 30 is
The lower end portion 31 is the lower end surface 3 in the horizontal state.
4 and a taper surface 35 projecting obliquely downward from the lower end surface 34. That is, the lower end portion 31 is provided with a protrusion 36 that projects from the lower end surface 34 and has a tapered surface 35 that is continuous with the lower end surface 34.

Next, 40 is a pressing member fixedly provided on the inner wall of the lower end portion 25b of the guide cylinder 25. This pressing member 40 has an upper surface 40a and a lower surface 4 based on FIG.
0b is a flat state, and the upper surface 40a can contact the lower end surface 34 of the punch body 30 that has descended, while the lower surface 40b can contact the upper surface of the positioned plate material W. Further, the outer peripheral surface 40c on the right side is appropriately formed in an arc shape with a curvature along the inner wall of the guide cylinder 25, but the side surface on the left side (hereinafter referred to as "inner surface") 40d.
Is formed in a vertical state in this embodiment, and the inner surface 40d
Can come into contact with the vertical surface 41a of the spot forming countersink blade 41. Further, on the upper part of the inner surface 40d of the pressing member 40, a slightly long upper tapered surface 4 connecting the inner surface 40d and the upper surface 40a.
0e is formed, and on the other hand, a very short claw forming tapered surface 40f connecting the inner surface 40d and the lower surface 40b is formed below the inner surface 40d.

Next, 41 is a horizontal axis 4 at the lower end 25b of the guide cylinder 25 so as to face the inner surface 40d of the pressing member 40.
It is a nail-forming counterbore blade 41 that is axially supported via 2. The horizontal shaft 42 is fixedly mounted on the guide cylinder 25. Although the pawl forming counterbore 41 has the vertical surface 41a facing the inner surface 40d of the pressing member 40 as described above, the tapered surface 35 of the lower end 31 of the punch body 30 is further provided on the upper side.
An oblique slide surface 41b is formed in sliding contact with. An outer peripheral surface 41c on the lower side connecting the vertical surface 41a and the slide surface 41b is formed in an arc shape. It should be noted that the blade portion 43 of the nail-forming counterbore blade 41 slightly projects from the lower surface 40b of the pressing member 40 when the nail is formed, as shown in FIG.

By the way, the pawl forming counterbore 41 has its vertical surface 4 formed by a spring member 50 provided at an appropriate position.
The direction in which 1a moves away from the inner surface 40d of the pressing member 40 (see FIG.
In the clockwise direction). Although the spring member 50 may be appropriately provided on the horizontal shaft 42, in the present embodiment, the spring member 50 is laterally installed in the spring accommodating portion 51 of the pressing member 40, and further, the spring member 50 and the pawl forming counterbore blade. 41 vertical surface 4
A slider 53, which moves back and forth through a guide groove 52 of the spring accommodating portion 51, is interposed between the slider 1a and 1a. It should be noted that the slider 53 is configured so as not to come off from the spring accommodating portion 51.

The above is the description of the nail forming punch 17 as the positioning upper die. Next, the die 19 as the lower die provided on the lower mounting plate 20, which is another main part of the present invention, will be described. No recesses or through holes are formed in this die 19. This is different from the conventional general die in which the point recess and the through state are formed. As shown in FIG. 2, the die 19 is fitted in a recess 23 formed in the upper portion of the lower mounting plate 20, and the upper surface 19a thereof projects somewhat from the upper surface 20a of the lower mounting plate 20.

In the above structure, the plate material W is first positioned by the plate material positioning device 5 as shown in FIG.
Also, the upper and lower mounting plates 18 of the mold device 16 for forming nails,
20 is synchronously rotated via upper and lower rotary shafts 21 and 22.

Then, as shown in FIG. 2, when the claw forming punch 17 on the upper mounting plate 18 side and the die 19 on the lower mounting plate 20 line up on the vertical line, the upper mounting plate 18 descends as shown in FIG. To do. Next, the driving means 12 of the striking device 11 is driven, and the ram 13 descends to a predetermined position. Then,
The lower end surface of the guide cylinder 25 of the claw forming punch 17 and the lower surface 40b of the pressing member 40 abut on the upper surface of the plate material W so as to press them. At this time, the pawl forming countersink blade 41 moves the spring member 5
The vertical surface 41a is pushed by 0 and the slider 53 and is in a tilted state.

Then, as shown in FIG. 4, when the impactor 14 of the striking device 11 strikes the punch head 27 of the claw forming punch 17, the punch body 30 instantly descends against the spring force of the return spring 33. To do. Then, the nail forming counterbore 41 is pushed by the protrusion 36 of the lower end 31 of the punch body 30 and rotates about the horizontal shaft 42 as a fulcrum against the spring force of the spring member 50. Thus, in this way, the nail-forming spot facing blade 41 has its vertical surface 41a counterclockwise in the inner surface 4 of the pressing member 40.
When rotated until it comes into contact with 0d, the blade portion 43 of the forming counterbore blade 41 spots the surface of the plate material W, and as a result, the blade portion 43 of the nail forming counterbore blade 41 and the lower tapered surface 40f of the pressing member 40. Together, the positioning engaging claws 55 are formed on the surface of the plate material W. The engagement claw 55 has a mountain shape as shown in FIG. 8, and the blade portion 43 of the countersunk spot facing blade 41.
It has a vertical locking surface 55a corresponding to (vertical surface 41a). When the engaging claw 55 is formed, the tapered surface 35 of the protrusion 36 of the punch body 30 is pressed against the slide surface 41b of the counterbore forming blade 41 and the lower end surface 34 of the lower end 31 of the punch body 30 is pressed down. The upper surface 40a of the member 40 is pressed against the upper surface 40a.

As soon as the engaging claws 55 are formed in this way, the punch body 30 of the claw forming punch 17 has the return spring 33.
Then, the spring force returns to the upper side, and then the upper mounting plate 18 rises to a predetermined position.

[0029]

EXAMPLES Examples of the present invention in which the positioning engaging claws 55 can be formed on the plate W will be listed below. In the description of the embodiments, the reference numerals described in the embodiments of the invention are attached to the drawings as they are, or the same reference numerals are attached,
A duplicate description will be omitted.

Here, the first embodiment described in the embodiment of the present invention will be described with reference to FIGS. 2 to 10.

The pawl forming die device in the punch press of the first embodiment is a lower mounting plate 20 having a die 19 in a recess 23, and can be opposed to the die 19 on a vertical line. And an upper mounting plate 18 having a claw forming punch 17. The lower mounting plate 20 and the upper mounting plate 18 correspond to the type of punch press, and may be a rotary type (for example, a turret punch press) or a fixed type (for example, a set press). Therefore, the mounting plate or the mounting plate on which the upper and lower molds of the present invention are mounted may be either a rotating plate or a fixed plate.

Thus, the claw forming punch 17 has a guide tube 25 fixedly fitted in the through hole of the upper mounting plate 18.
The lower end 31 side is slidably guided by the guide cylinder 25, and the punch head 27 on the upper end side protruding from the upper surface 18a of the upper mounting plate 18 resists the spring force of the return spring 33 and impacts the impactor. Punch body 30 hit by 14
And a pressing member 40 fixed to the inner wall surface of the lower end portion of the guide cylinder 25 so as to abut the lower end surface 34 of the lower end portion 31 of the punch body 30 that has been hit, and the pressing member 40.
Has a slide surface 41b which is axially supported by the guide cylinder 25 so as to face the inner surface 40d and which is slidably in contact with the tapered surface 35 of the projection 36 projecting from the lower end 31 of the hit punch body 30. Together with the pressing member 40
Together with the lower end of the lower mounting plate 20, a pawl forming counterbore 41 for forming a positioning engaging pawl 55 on the surface of the plate material W supported in a horizontal state on the lower mounting plate 20, and the pressing member 40 are provided. When the punch body 30 is lifted by the spring force of the return spring 33, the pawl forming counterbore blade 41 is pressed against the pressing member 4.
Spring member 50 for urging in a direction away from the inner surface 40d of 0.
Consisting of

Next, FIGS. 11 and 12 show a second embodiment of the present invention. In the second embodiment, the nail forming counterbore 41 is formed.
The mounting position of the spring member 50A that biases A in a direction away from the inner surface 40d of the pressing member 40A is different. That is, the spring member 50A is wound around the horizontal shaft 42A that pivotally supports the nail forming counterbore 41A, and one end 56 of the spring member 50A is pressed against the inner surface 40d of the pressing member 40A, while the other end 57 is attached to the nail forming seat. It is in pressure contact with the inner wall surface 59 created by forming the notch 58 of the boring blade 41A. Even with this structure, the same operation and effect as those of the first embodiment can be obtained.

[0034]

As is clear from the above description, the present invention has the following effects. (1) According to the inventions of claims 1 and 6, it is possible to obtain a positioning plate material which does not require welding and polishing operations for treating the surface of the plate material. That is, in the case of forming various electronic device frames and the like while joining two plate members, the plate member having the positioning engaging claws formed by the present invention and the penetrating holes for engaging the engaging claws. Even if it is joined to a plate material with small holes, no recess is formed on the front side of the part where the engaging claws of the plate material are formed, so that the recess on the surface of the plate material is aesthetically treated. No welding or polishing work is required to do so. (2) In the invention described in claims 1 and 6, the claw forming punch corresponding to the upper die and the die corresponding to the lower die can have a simple structure. Therefore,
Since it is easy to assemble and the number of constituent parts is small, it can be manufactured at low cost. (3) Further, the inventions according to claim 1 and claim 6,
It is possible to easily and reliably form the engaging claws on the surface of the positioning plate material. (4) In the invention according to claim 2, a desired engaging claw can be easily formed. (5) According to the third aspect of the invention, the plate material W having the engaging claws can be reliably pressed down together with the die 19.

[Brief description of drawings]

1 to 3 are explanatory views for explaining an embodiment of the present invention. 2 to 7 are explanatory views showing the first embodiment of the present invention. 11 and 12 are explanatory views showing a second embodiment of the present invention.

FIG. 1 is a schematic explanatory view showing an example of an embodiment of the present invention.

FIG. 2 is a schematic explanatory view before the upper mounting plate is lowered in the embodiment of the present invention.

FIG. 3 is a schematic explanatory view in which an upper mounting plate is lowered in the embodiment of the present invention.

FIG. 4 is a schematic explanatory view showing a state in which an engaging claw is formed in FIG.

FIG. 5 is a schematic cross-sectional explanatory view of the present invention (a state before forming engaging claws).

FIG. 6 is a schematic cross-sectional explanatory view showing a state in which the punch body of the claw forming punch is lowered to form the engaging claws in FIG. 5;

FIG. 7 is an enlarged explanatory view of a main part in FIG.

FIG. 8 is a perspective view showing a joining relationship between a plate member having a positioning engaging claw and a plate member having a through hole obtained according to the present invention.

9 is an explanatory view of a case where a plate member and a plate member are joined together in FIG.

10 is a schematic cross-sectional explanatory view taken along line 10-10 of FIG.

FIG. 11 is a schematic sectional view similar to FIG. 5 showing a second embodiment of the present invention.

FIG. 12 is a schematic cross-sectional explanatory view similar to FIG. 6 showing a second embodiment of the present invention.

FIG. 13 is a schematic explanatory view showing an example of a conventional punch press die device.

FIG. 14 is a perspective view showing a joining relationship between a plate material having a positioning projection and a plate material having a through hole, which is obtained by a conventional punch press die device.

FIG. 15 is an explanatory view of the case where the plate member and the plate member are joined together in FIG.

[Explanation of symbols]

2 ... Lower frame, 3 ... Upper frame, 4 ... Space part, 5
... Plate material positioning device, W ... Plate material, 11 ... Impact device, 14
... Impactor, 15 ... Inner frame, 16 ... Claw forming die device, 17, 17A ... Claw forming punch, 18, 18A ... Upper mounting plate, 19, 19A ... Die, 20, 20A ... Lower mounting plate, 23, 23A ... Recess, 25, 25A ... Guide tube, 2
7, 27A ... Punch head, 30, 30A ... Punch body, 31, 31A ... Lower end portion, 33 ... Return spring, 34 ... Lower end surface, 35 ... Tapered surface, 36 ... Projection portion, 40, 40A
... pressing member, 40a ... upper surface, 40b ... lower surface, 40d ... inner surface, 40e ... upper tapered surface, 40f ... lower tapered surface, 42, 42A ... horizontal axis, 43 ... blade portion, 50, 50A ...
Spring member, 51 ... Spring housing portion, 53 ... Slider, 55, 5
5A ... Engaging claws, 56 ... One end of the spring member, 57 ... The other end of the spring member, 59 ... Inner wall surface.

Claims (7)

[Claims] 1. A punch press comprising: a lower mounting plate 20 having a die 19 in a recess 23; and an upper mounting plate 18 having a claw forming punch 17 that can face a vertical line with respect to the die 19. The nail forming punch 17 is a punch forming die device, and the nail forming punch 17 has a guide cylinder 25 fixedly fitted into a through hole of an upper mounting plate 18, and a lower end 31 side of the guide cylinder 25 slidable. Guided and upper mounting plate 1
Punch head 2 on the upper end side protruding from the upper surface 18a of
The guide cylinder 25 is provided such that 7 abuts against the punch body 30 hitting the impactor 14 against the spring force of the return spring 33 and the lower end surface 34 of the lower end 31 of the hit punch body 30. Member 4 fixed to the inner wall surface of the lower end of the
0, and a tapered surface 35 of a projection 36 that is axially supported by the guide cylinder 25 so as to face the inner surface 40d of the pressing member 40 and that is projected on the lower end 31 of the punch body 30 that has been hit. The lower mounting plate 2 has a sliding surface 41b that is in sliding contact with the lower mounting plate 2 together with the lower end of the pressing member 40.
0 is provided on the holding member 40, and the punch body 30 is provided with the return spring 33 and the pawl forming counterbore blade 41 for forming the engaging pawl 55 for positioning on the upper surface of the plate material W supported in a horizontal state. And a spring member 50 that urges the spot forming counterblade blade 41 in a direction away from the inner surface 40d of the pressing member 40 when it is lifted by the spring force of. 2. The lower tapered surface 40f according to claim 1, wherein a lower tapered surface 40f is formed at a lower end portion of the pressing member 40 so that the engaging claw 55 can be formed in a mountain shape. Mold device for forming nails in punch press. 3. The pressing member 40 according to claim 1, wherein the upper surface 40a and the lower surface 40b are each in a flat state, and the upper surface 40a is capable of contacting the lower end surface 34 of the punch body 30 that has descended, On the other hand, the lower surface 40b is capable of contacting the upper surface of the positioned plate material W, and is a die device for forming a nail in a punch press. 4. The pressing member 40 according to claim 1, wherein the outer peripheral surface 40c on the right side is formed in an arc shape with a curvature along the inner wall of the guide cylinder 25, while the inner surface 40d on the left side is in a vertical state. A die forming die device in a punch press, characterized in that the inner surface 40d is capable of contacting with the vertical surface 41a of the nail forming spot facing blade 41. 5. The counterbore blade 4 for nail formation according to claim 1.
1 is interposed between the spring member 50 laterally installed in the spring accommodating portion 51 of the pressing member 40 and the vertical surface 41a of the nail forming counterbore 41, and A metal mold device for forming a nail in a punch press, which is urged by a slider 53 which moves back and forth through a guide groove 52 of a portion 51. 6. A lower mounting plate 20A having a die 19A in a recess 23A, and an upper mounting plate 1 having a claw forming punch 17A which can face the die 19A on a vertical line.
8A is a die device for forming a nail in a punch press, wherein the nail forming punch 17A is an upper mounting plate 18A.
A guide cylinder 25A fixedly fitted in the through hole, and a lower end 31A side of the guide cylinder 25A slidably guided to the upper end punch head protruding from the upper surface 18a of the upper mounting plate 18A. Punch body 3 in which 27A hits the impactor 14A against the spring force of the return spring 33A.
0A and the guide tube 2 so as to come into contact with the lower end surface 34A of the lower end portion 31A of the punch body 30A that has been hit.
A pressing member 40A fixed to the inner wall surface of the lower end portion of 5A, and a punch body 30A which is axially supported by a guide cylinder 25A via a horizontal shaft 42A so as to face the inner surface 40d of the pressing member 40A and which is hit. It has a slide surface 41b that is in sliding contact with the tapered surface 35A of the projection 36A protruding from the lower end 31A of the projection, and is supported horizontally on the lower mounting plate 20A in cooperation with the lower end of the pressing member 40A. When the punch forming counterbore blade 41A forming the engaging claw 55A for positioning on the upper surface of the plate material W and the horizontal shaft 42A and the punch body 30A is lifted by the spring force of the return spring 33A, the claw forming is performed. A pawl forming die device in a punch press including a counterbore blade 41A and a spring member 50A for urging the countersunk blade 41A away from the inner surface 40d of the pressing member 40A. 7. The lower taper surface 40f according to claim 6, wherein a lower tapered surface 40f is formed at a lower end portion of the pressing member 40A so that the engaging claw 55A can be formed in a mountain shape. Mold device for forming nails in punch press.