JPH0679367A - Punching die - Google Patents

Abstract

PURPOSE:To provide a punching die where a punch bite can be simply and easily regulated at one touch without using a tool at the time of regulating the punch bite. CONSTITUTION:A punch driver 7 freely movable in the axial direction is attached inside a punch guide 3, and a punch head 9 freely rotatable is provided on the upper part of this punch driver 7, a slide member 41 being able to slide and return to the axial direction is provided on the outer circumference of the punch driver 7, a positioning member 51 extending to the axial direction is provided on the slide member 41, and plural numbers of positioning and fixing members 53 where the positioning member 51 is positioned and fixed are provided by proper interval in the circumferential direction of the punch head 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching die for punching a work such as punching and forming.

[0002]

2. Description of the Related Art Conventionally, as a punching die, a punch driver is provided in a punch guide so as to be movable in the axial direction. A punch head is screwed onto the punch driver. Moreover, the punch head is composed of an upper punch head and a lower punch head, and the upper punch head and the lower punch head are fixed by scissoring the screw portion of the punch driver by tightening a plurality of bolts.

[0003]

By the way, when the punching die is used and the tip of the punch driver is abraded and the tip of the punch blade is abraded, the punch head is cut and shortened. The punch height adjustment is performed when the original punch length is maintained and when the molding process (drawing process) is performed to adjust the height of the molded product.

When performing the punch height adjustment, in the above-described conventional punching die structure, a tool is required for the adjustment, which is very troublesome, and since there is no standard, accurate adjustment can be performed. could not. Moreover, there is a problem that the upper surface of the punch head is inclined unless the bolts are tightened uniformly.

In order to solve the above problems, an object of the present invention is to provide a punching die which can be easily and easily performed with one touch without using a tool when adjusting the punch height. Especially.

[0006]

In order to achieve the above object, the present invention mounts a punch driver movable in the axial direction in a punch guide, and a rotatable punch head on the upper part of the punch driver. A punching head is provided with a slide member that is slidable in the axial direction and is capable of returning to the outer circumference of the punch driver, a positioning member that extends in the axial direction is provided on the slide member, and a positioning fixing member that positions and fixes the positioning member. A plurality of punching dies were formed at appropriate intervals in the circumferential direction.

[0007]

By adopting the punching die of the present invention, when the punch height is adjusted, the operator holds the slide member by hand and when the operator pulls it down, the positioning member is a positioning fixing member provided on the punch head. Get out of and leave. When the punch head moves in the axial direction by rotating the punch head in this state to reach an arbitrary size, when the hand is released from the slide member, the slide member returns to its original state and the positioning member is fitted to the positioning fixing member. The punch height can be adjusted easily and easily with one touch.

[0008]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Referring to FIG. 1, the punching die 1 is provided with a punch guide 3. The punch guide 3 is provided in a mounting hole provided at an appropriate position on the circumference of the upper turret in a turret punch press, for example. It is mounted so that it can move up and down. A vertically movable punch body 5 is mounted in the punch guide 3 so as to be vertically movable.

A punch driver 7 extending vertically is integrally provided on the upper part of the punch body 5.
A rotatable punch head 9 is screwed onto the upper portion of the punch driver 7.

A spring cover 11 is provided between the punch head 9 and the flange portion 3F of the punch guide 3, and a spring 13 is interposed in the spring cover 11. A key groove 15 is vertically formed on the right side of the punch guide 3 in FIG. 1, and a key 17 provided on the punch body 5 is engaged with the key groove 15. The tip of the punch body 5 is integrated with a punch tip 19 which is a cutting edge portion.

In the lower portion of the punch guide 3, as shown in FIGS. 2 and 3, for example, a U-shaped groove 21.
1 and 3, the groove 21 is formed with a concave groove 23 in the vertical direction. Further, on the lower surface of the punch guide 3, there are correspondingly corresponding positioning pins 25 and ball plungers 27 (retaining members).
Is provided.

A stripper plate 29 is slidably fitted in a U-shaped groove 21 formed at the tip of the punch guide 3 from the horizontal direction. That is, the stripper plate 29 is detachably replaced with respect to the punch guide 3.

Around the stripper plate 29, an engaging convex portion 31 that engages with the groove 23 is formed. Further, the positioning pin 25 is provided on the stripper plate 29.
An engaging groove 33 that engages with is provided.

With the above structure, the stripper plate 29
3 is attached to the front end of the punch guide 3, the stripper plate 29 is slid with a finger from the horizontal direction as shown by an arrow in FIG. 3, and the engaging convex portion 31 is fitted into the engaging groove 23 to be engaged. By aligning the groove 33 with the positioning pin 25 and pressing the ball of the ball plunger 27 until the ball is visible, the stripper plate 29 is attached to the tip of the punch guide 3 without using a tool or the like.
Then, the punch body 5 is mounted in the punch guide 3.

The stripper plate 29 is attached to the punch guide 3
When removing the punch body 5 from the punch guide 3 and sliding the stripper plate 29 from the side of the punch guide 3, the engaging groove 33 is disengaged from the positioning pin 25 and the engaging convex portion 31 is engaged. Ditch 23
By removing the stripper plate 29 from the punch guide 3, the stripper plate 29 can be easily removed from the punch guide 3.

The stripper plate 29 is prevented from coming off by a double structure in which the punch tip 19 (blade edge portion) of the punch body 5 is contained in the stripper plate 29 and the function of the ball plunger 27. is there.

As described above, the replacement of the stripper plate 29 with respect to the punch guide 3 does not require a tool as in the prior art, a very troublesome work is eliminated, and it can be easily performed.

The upper part of the punch driver 7 is shown in FIG.
As shown in FIG. 4, FIG. 5, FIG. 6, FIG. 7 and FIG.
It is fixed at 7. The fixing collar 35 is formed with a through hole 39 penetrating in the axial direction (vertical direction in FIGS. 1, 4, and 5).

A slide collar 41 as a slide member is provided on the outer periphery of the punch driver 7 below the fixed collar 35 so as to be slidable in the axial direction. A plurality of stripper bolts 43 facing each other are attached to the slide collar 41 so that the slide bolts 43
The front end (upper end in FIGS. 1, 4 and 5) of is attached to the fixed collar 39.

A groove 45 is formed in the slide collar 41 to which the stripper bolt 43 is mounted, and a spring 47 is interposed between the groove 45 and the head 43T of the stripper bolt 43. The slide collar 41 is constantly urged upward by the urging force of the spring 47, and the upper surface of the slide collar 41 is in contact with the lower surface of the fixed collar 35 as shown in FIG.

A hole 49 is formed in the slide collar 41 at a position facing the through hole 39 formed in the fixed collar 35.
Are formed. Positioning pins 51 as positioning members extending in the axial direction (vertical direction in FIG. 1) are attached to the through holes 39 and 49.

A plurality of positioning holes 53 as positioning fixing members are provided at appropriate intervals in the lower circumferential direction of the punch head 9, and the positioning holes 5 are provided.
3, the positioning pin 51 is fitted in as shown in FIG. 4 or pulled out as shown in FIG.

With the above structure, when the operator pulls down the slide collar 41 when adjusting the punch height, the positioning pin 51 driven into the slide collar 41 causes the positioning pin 51 to be positioned in the punch head 9. 53
The punch head 9 can freely rotate because it comes out of the above state and becomes the state shown in FIG. By rotating the punch head 9, the punch head 9 is screwed into the punch driver 7, so that the punch head 9 is moved up and down.

Then, when the punch head 9 is rotated by an arbitrary size, the slide collar 41 is lifted by the urging force of the spring 47 when the hand is released from the slide collar 41, and at the same time, as shown in FIG. Then, the positioning pin 51 is also pushed up and fitted into the positioning hole 53 of the punch head 9. Since the positioning pin 51 passes through the through hole 39 of the fixing collar 35 fixed to the punch driver 7 by the bolt 37, the punch head 9 is fixed so that it cannot rotate.

Therefore, the punch height can be easily and easily adjusted with one touch without using a tool. Moreover, the through hole 39 is provided in the fixed collar 35, and the positioning pin 51 is passed through to form a rotation stopping mechanism for stopping the rotation of the punch head 9, thereby making the punch head 9 simple and durable. In addition, the punch head 9
The space underneath (around the punch driver 7) is effectively used.

A plurality of the positioning holes 53 are provided at appropriate intervals in the circumferential direction of the punch head 9, and the positioning holes 53 have an arbitrary pitch. The height amount of the punch tip 19 can be finely adjusted by this pitch.

The present invention is not limited to the above-described embodiments, and can be implemented in other modes without making appropriate changes.

[0029]

As can be understood from the above description of the embodiments, according to the present invention, since the structure is as described in the claims, a tool should be used when adjusting the punch height. Instead, it can be done easily and easily with one touch.

[Brief description of drawings]

FIG. 1 is a front sectional view of an example punching die according to the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is an explanatory view of the action of attaching and detaching the stripper plate to and from the punch guide.

FIG. 4 is an enlarged view of an IV arrow portion in FIG.

FIG. 5 is an operation explanatory view for explaining the operation of this embodiment.

6 is a cross-sectional view taken along line VI-VI in FIG.

7 is a cross-sectional view taken along the line VII-VII in FIG.

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

[Explanation of symbols] 1 punching die 3 punch guide 5 punch body 7 punch driver 9 punch head 19 punch tip 35 fixed collar 39 through hole 41 slide collar (slide member) 43 stripper bolt 47 spring 49 hole 51 positioning pin (positioning member) ) 53 Positioning hole (positioning fixing member)

Claims (1)

[Claims] 1. A punch driver, which is movable in the axial direction, is mounted in a punch guide, and a rotatable punch head is provided on the upper part of the punch driver, so that the punch driver is slidable in the axial direction and can be returned. A slide member is provided, a positioning member extending in the axial direction is provided on the slide member, and a plurality of positioning fixing members for positioning and fixing the positioning member are provided at appropriate intervals in the circumferential direction of the punch head. Punching die to be.