JP2001105044A - Die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die to/from which a stripper plate can be easily attached/ detached. SOLUTION: In a die attachably/detachably provided with a stripper plate 11 to the lower end of a cylindrical punch guide 3 in which a punch body 5 is accommodated in a vertically movable state, an elastic member 31 provided with a locking part 31K which freely holds the stripper plate 11 by engaging with an engaging recessed part 11G formed on the outer peripheral face of the stripper 11 is arranged on the lower part of the punch guide 3. A slide member 35 provided with a deformation restricting part 37 which is abutted on the elastic member 31 freely restricts deformation toward the outward direction and allows the deformation in the outward direction corresponding to the recessed part 31C of the elastic member 31 is arranged on the lower part of the punch guide 3 so that the slide member 35 can be moved/fixed. Further, an elastic stopper 41 provided with a lock part 41K freely to engage with a lock part 35K formed on a slide member 35 is arranged on the punch guide 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold, and more particularly, to a mold used for a punch press such as a turret punch press, which has a stripper plate detachably provided. .

[0002]

2. Description of the Related Art As a mold used for a punch press such as a turret punch press, a mold 1 as shown in FIG. 4 is known, for example. The mold 1 has a configuration in which a punch body 5 having a punch blade portion 5B at a lower end portion is provided inside a cylindrical punch guide 3 so as to be vertically movable, and is integrally formed with an upper end portion of the punch body 5. A strong stripper spring 9 such as urethane rubber or a disc spring is elastically mounted between the punch head 7 attached to the punch guide 3 and the flange portion 3F on the upper part of the punch guide 3. At the lower end of the punch guide 3, a stripper plate 11 surrounding the punch blade 5B is detachably attached.

[0005] In order to prevent the stripper plate 11 from falling off from the punch guide 3, as shown in FIG. A ball 13 is provided below the punch guide 3 so as to be movable inward and outward. A slide member 19 having a ball accommodating recess 15 for allowing the ball 13 to move outward and a slope member 17 for allowing the ball 13 to move inward is provided at a lower part of the outer periphery of the punch guide 3. Are provided so as to be able to move up and down in a vertical groove 21 formed in the vertical direction.

In order to lock the vertical movement of the slide member 19, a stopper 25 is provided in the recess 23 formed in the punch guide 3 so as to be able to come and go with respect to the groove 21. A spring 27 is mounted between the bottom of the recess 23 and the spring 27. The slide member 19 is provided with a push button 29 corresponding to the stopper 25.

In the conventional configuration as described above, FIG.
When the slide member 19 is locked so as not to be moved by the stopper 25 as shown in FIG. 7 and the push button 29 is pressed against the urging force of the spring 27 and the stopper 25 is retracted from the groove 21, 1
9 is released, and can be moved downward.

Accordingly, when the slide member 19 is moved downward while the push button 29 is pressed, the ball accommodating recess 15 formed in the slide member 19 corresponds to the ball 13, and the ball 13 moves to the ball accommodating recess 15. Thus, the stripper plate 11 can be removed from the punch guide 3.

When the slide member 19 is raised from the lowered state, the inclined surface 1 formed on the slide member 19 is raised.
7, the ball 13 is moved inward, is engaged with the circumferential groove 11G of the stripper plate 11 and is fixed so that the stripper plate 11 does not fall off, and the push button 29 corresponds to the position of the stopper 25, and the spring 27 As a result, the stopper 25 is projected into the groove 21 to return to the original state, and the slide member 19 is locked again.

[0008]

The conventional structure as described above has an advantage in that the stripper plate 11 can be attached and detached without using a tool, but the contact between the ball 13 and the stripper plate 11 is pointed out. As a result, the ball 13 and / or the stripper plate 11 is likely to be damaged.
If the precision of the positional relationship is not good, the stripper plate 11 cannot be securely fixed with the ball 13, and the stripper plate 11 is apt to rattle, so that the components must be finished with high precision. There is a problem.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the invention according to claim 1 is provided at a lower end portion of a cylindrical punch guide in which a punch body is vertically movable. In a mold provided with a detachable stripper plate, an elastic member having an engaging portion which is engaged with an engagement recess formed on an outer peripheral surface of the stripper plate and is capable of holding the stripper plate is provided at a lower portion of the punch guide. Provided, a slide member provided with a deformation restricting portion that is capable of restricting outward deformation by contacting the elastic member and allowing outward deformation corresponding to the concave portion of the elastic member.
It is configured to be movable and fixed below the punch guide.

According to a second aspect of the present invention, in the mold according to the first aspect, the punch guide has an elastic stopper provided with a locking portion formed on the slide member and a locking portion which can be freely engaged and disengaged. It is.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, components having the same configuration as the above-described conventional configuration and having the same function are denoted by the same reference numerals. And a duplicate description will be omitted.

Referring to FIG. 1, in a mold according to an embodiment, a stripper plate 11 is provided at a lower end portion of a cylindrical punch guide 3 in which a punch body (not shown in FIG. 1) is vertically movable. This is a configuration provided detachably. As a configuration for holding the stripper plate 11 at the lower end of the punch guide 3, a locking portion 31K which is detachable from a peripheral groove 11G as an example of an engagement recess formed on the outer peripheral surface of the stripper plate 11 has a distal end (lower end). A leaf spring 31 as an elastic member provided for the punch guide 3 is attached to a lower portion of the vertical groove 21 formed in the punch guide 3. The engaging portion 31K of the leaf spring 31 is formed so as to protrude inward and curve so as to follow the shape of the peripheral groove 11G so as to be engaged with the peripheral groove 11G, and has a concave portion 31C formed outside. .

A slide member 35 is vertically movably mounted in the groove 21 via a mounting member 33 such as a mounting bolt. In the vicinity of the inner lower portion of the slide member 35, the leaf spring 31 is in a position corresponding to the concave portion 31 </ b> C of the leaf spring 31 so as to be able to regulate the outward deformation of the leaf spring 31 by contacting the outer surface of the leaf spring 31. A pin 3 as an example of a deformation restricting portion that allows an outward deformation when moved.
7 is attached.

A locking portion 35K is formed on the upper portion of the slide member 35. The locking portion 35K has an elastic stopper such as a leaf spring mounted on the upper portion in the groove 21 by a mounting member 39. Locking portion 41K protruded from 41
Is formed so as to be freely detachable.

With the above configuration, as shown in FIG. 1, the locking portion 35K of the slide member 35 is locked by the locking portion 41K of the elastic stopper 41, and the slide member 3
When the pin 37 as an example of the deformation restricting portion provided in the elastic member 31 is in contact with the base-side outer surface of the elastic member 31, the locking portion 31K at the distal end of the elastic member 31 moves outward (see FIG. 1).
A is restricted from being deformed to the right in FIG.
The state engaged with G is maintained.

In the above state, the elastic stopper 41 is pressed inward by a thumb or the like, and the engaging portion 41K of the elastic stopper 41 is engaged with the engaging portion 35K of the slide member 35.
When the slide member 35 is lowered, the pin 37 corresponds to the concave portion 31C of the elastic member 31.
The locking portion 31K of the elastic member 31 can be elastically deformed outward. However, due to the elasticity of the elastic member 31, the locking portion 31K is held in a state of being engaged with the engaging concave portion 11G of the stripper plate 11, thereby preventing the stripper plate 11 from being accidentally dropped from the punch guide 3 by its own weight or the like. Is what you are doing.

As described above, when the pin 37 is at a position corresponding to the recess 31C of the elastic member 31, the stripper plate 11 can be removed against the elasticity of the elastic member 31 by pulling the stripper plate 11 downward in FIG. You can do it. By performing the reverse operation, the stripper plate 11 can be attached to the punch guide 3.

As will be understood from the above, according to the above-described structure, the stripper plate 11 can be attached to and detached from the punch guide 3 without using a tool. Also, it is possible to prevent the stripper plate 11 from accidentally falling off during attachment and detachment. Further, since the locking portion 31K of the elastic member 31 is curved so as to follow the engaging concave portion 11G of the stripper plate 11, the stripper plate 11 is always pressed against the lower end surface of the punch guide 3 so that there is no play. It can be supported.

Further, the position where the pin 37 as the deformation restricting portion contacts the outer surface of the elastic member 31 on the base side and the concave portion 31C
The position corresponding to is not always required to be accurate, but the point is that the locking portion 41K of the elastic stopper 41 and the slide member 3
5 is in the engaged state, the pin 37
Is located on the base-side outer surface of the elastic member 31. When the engagement is released and the slide member 35 is lowered, the slide member 35 only needs to correspond to the recess 31C of the elastic member 31 from the pin 37. The accuracy such as the positional relationship between the locking portion 35K of the 35 and the pin 37 may be rough to some extent.
It is easy to manufacture and inexpensive.

FIG. 3 shows another embodiment. The difference from the above-mentioned embodiment is that a cover 43 for covering the elastic stopper 41 and the like is integrally provided on the upper portion of the slide member 35, and this cover is provided. The point is that the part 43 is provided with a push button 45 capable of pressing the elastic stopper 41 freely. According to this configuration, the same effects as those of the embodiment shown in FIG. 1 are obtained, the operability is improved, and the appearance is improved.

[0021]

As will be understood from the above description, according to the present invention, when the stripper plate is attached to and detached from the punch guide, the stripper plate is prevented from being accidentally dropped from the punch guide. In addition to this, it is easy to manufacture and can be provided at low cost, and the conventional problems as described above can be solved.

[Brief description of the drawings]

FIG. 1 is an operation explanatory view and a side view showing a main part of a mold according to an embodiment of the present invention.

FIG. 2 is an operation explanatory view and a side view showing a main part of a mold according to the embodiment of the present invention.

FIG. 3 is an operation explanatory view and a side view showing a main part of a mold according to another embodiment of the present invention.

FIG. 4 is a partially sectional explanatory view of a general mold.

FIG. 5 is an explanatory cross-sectional view of a configuration for attaching and detaching a conventional stripper plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die 3 Punch guide 5 Punch body 11 Stripper plate 31 Elastic member (leaf spring) 31C Depression 31K, 35K, 41K Locking part 35 Slide member 37 Deformation restricting part (pin) 41 Elastic stopper

Claims (2)

[Claims] 1. A mold provided with a detachable stripper plate at a lower end portion of a cylindrical punch guide in which a punch body is mounted so as to be movable up and down, and engages with an engagement recess formed on an outer peripheral surface of the stripper plate. An elastic member provided with a locking portion capable of holding the stripper plate is provided at a lower portion of the punch guide, and is configured to abut against the elastic member to regulate deformation in an outward direction and correspond to a concave portion of the elastic member. A mold having a slide member provided with a deformation restricting portion capable of freely deforming in the outward direction at a lower portion of the punch guide. 2. The mold according to claim 1, wherein the punch guide includes an elastic stopper having a locking portion formed on the slide member and a locking portion that is detachable. .