JP4598209B2 - Mold - Google Patents

Description

[0001]
BACKGROUND 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, and to a mold provided with a stripper plate in a detachable manner.
[0002]
[Prior art]
As a mold used for a punch press such as a turret punch press, for example, a mold 1 as shown in FIG. 4 is known. The mold 1 has a configuration in which a punch body 5 having a punch blade portion 5B at the lower end portion is mounted in a cylindrical punch guide 3 so as to be movable up and down, and is integrated with the upper end portion of the punch body 5. A strong stripper spring 9 such as a urethane rubber or a disc spring is mounted between the punch head 7 attached to the upper portion of the punch guide 3 and the flange portion 3F above the punch guide 3. A stripper plate 11 surrounding the punch blade 5B is detachably attached to the lower end of the punch guide 3.
[0003]
In order to prevent the stripper plate 11 from falling off from the punch guide 3, as shown in FIG. 5, as shown in FIG. 5, a ball 13 detachably engageable in a circumferential groove 11 </ b> G as an engagement recess formed on the outer peripheral surface of the stripper plate 11. The punch guide 3 is provided at the bottom of the punch guide 3 so as to be movable inward and outward. A slide member 19 having a ball receiving recess 15 that allows the ball 13 to move outward and an inclined surface 17 for moving the ball 13 inward is provided at the lower outer periphery of the punch guide 3. It is provided in the vertical groove 21 formed so as to be movable up and down.
[0004]
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. The stopper 25 can be moved in and out of the groove 21. A spring 27 is mounted between the bottom portion. A push button 29 is provided on the slide member 19 corresponding to the stopper 25.
[0005]
In the conventional configuration as described above, when the slide member 19 is locked so as not to move by the stopper 25 as shown in FIG. 5, the push button 29 is pushed against the urging force of the spring 27, and the stopper When 25 is immersed from the groove 21, the lock of the slide member 19 is released, and it becomes possible to move downward.
[0006]
Therefore, when the slide member 19 is moved downward with the push button 29 pressed, the ball receiving recess 15 formed in the slide member 19 corresponds to the ball 13 and the ball 13 moves to the ball receiving recess 15. The stripper plate 11 can be removed from the punch guide 3.
[0007]
When the slide member 19 is raised from the lowered state, the ball 13 is moved inward by the inclined surface 17 formed on the slide member 19, and engages with the circumferential groove 11G of the stripper plate 11 so that the stripper plate 11 does not fall off. The push button 29 corresponds to the position of the stopper 25, and the stopper 25 protrudes into the groove 21 by the action of the spring 27 so that the slide member 19 is locked again. It is.
[0008]
[Problems to be solved by the invention]
In the conventional configuration as described above, there is 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 becomes a point contact, and the ball 13 and / or the stripper. If the position of the inclined surface 17 formed on the slide member 19 and the positional relationship between the inclination angle and the push button 29 are not accurate, the stripper plate 11 is securely fixed by the ball 13. However, the stripper plate 11 is likely to be loose, and there is a problem that the components must be finished with high accuracy.
[0009]
[Means for Solving the Problems]
The present invention has been made in view of the above-described problems. The invention according to claim 1 is a gold plate having a stripper plate detachably attached to a lower end portion of a cylindrical punch guide in which a punch body is vertically movable. In the mold, an elastic member provided at a lower end portion of the punch guide with an engaging portion that engages with an engaging recess formed on an outer peripheral surface of the stripper plate and can hold the stripper plate is provided at a lower portion of the punch guide, It is possible to regulate deformation in the outward direction by abutting on the outer surface above the latching portion and to allow deformation in the outer direction corresponding to the concave portion formed outside the latching portion in the elastic member . A slide member having a deformation restricting portion is provided below the punch guide so as to be movable and fixed in the vertical direction.
[0010]
Further, in the mold, when the deformation restricting portion provided in the slide member is in contact with the outer side surface of the elastic member, it is possible to engage and disengage with the engaging portion formed on the slide member. and it is characterized in that it comprises an elastic stopper provided with a stop portion on the punch guide.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Components that are the same as the above-described conventional configuration and have the same functions are denoted by the same reference numerals, and redundant description is omitted. .
[0012]
Referring to FIG. 1, the mold according to the embodiment is configured such that a stripper plate 11 can be attached to and detached from a lower end portion of a cylindrical punch guide 3 in which a punch body (not shown in FIG. 1) is mounted so as to move up and down. This is a configuration provided. As a configuration in which the stripper plate 11 is held at the lower end portion of the punch guide 3, an engaging portion 31 </ b> K that is detachably engageable with a circumferential groove 11 </ b> G as an example of an engaging recess formed on the outer peripheral surface of the stripper plate 11. A leaf spring 31 as an elastic member provided in the part) is attached to the lower part of the vertical groove 21 formed in the punch guide 3. The engagement portion 31K of the leaf spring 31 is curved so as to protrude inward and follow the shape of the circumferential groove 11G so as to be engaged with the circumferential groove 11G, and a recess 31C is formed on the outside. .
[0013]
A slide member 35 is mounted in the groove 21 so as to be movable up and down via a mounting tool 33 such as a mounting bolt. Near the inner lower portion of the slide member 35, the outer surface of the leaf spring 31 is brought into contact with the outer surface of the base spring 31 so that the deformation of the leaf spring 31 in the outward direction can be regulated and corresponds to the recess 31 </ b> C of the leaf spring 31. A pin 37 is attached as an example of a deformation restricting portion that permits deformation in the outward direction when moved.
[0014]
A locking portion 35K is formed on the slide member 35. The locking portion 35K protrudes from an elastic stopper 41 such as a leaf spring mounted on the upper portion of the groove 21 by a mounting tool 39. The formed locking portion 41K is detachably formed.
[0015]
As an example of the deformation restricting portion provided in the slide member 35 with the above configuration, as shown in FIG. 1, the lock portion 35K of the slide member 35 is locked to the lock portion 41K of the elastic stopper 41. When the pin 37 is in contact with the outer surface on the base side of the elastic member 31, the locking portion 31K at the distal end of the elastic member 31 is restricted from being deformed outward (rightward in FIG. 1A). The locking portion 31K is kept engaged with the engaging recess 11G of the stripper plate 11.
[0016]
When the elastic stopper 41 is pressed inward with a thumb or the like in the state as described above, the locking portion 41K of the elastic stopper 41 is detached from the locking portion 35K of the slide member 35, and the slide member 35 is lowered. Since 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, the locking portion 31K is held in an engaged state with the engaging recess 11G of the stripper plate 11 due to the elasticity of the elastic member 31, and the stripper plate 11 is prevented from inadvertently falling off the punch guide 3 due to its own weight or the like. It is what you are doing.
[0017]
As described above, when the pin 37 is in 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. is there. Further, the stripper plate 11 can be attached to the punch guide 3 by performing the reverse operation.
[0018]
As already understood, according to the configuration as described above, the stripper plate 11 can be attached to and detached from the punch guide 3 without using a tool. It is possible to prevent the stripper plate 11 from being accidentally dropped. Further, since the engaging portion 31K of the elastic member 31 is bent so as to follow the engaging recess 11G in 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 backlash. It can be supported.
[0019]
Further, the position where the pin 37 as the deformation restricting portion abuts against the outer surface on the base side of the elastic member 31 and the position corresponding to the concave portion 31C are not necessarily accurate. When the locking portion 35K of the member 35 is engaged, the pin 37 is positioned on the outer surface on the base side of the elastic member 31. When the slide member 35 is lowered by releasing the engagement, the pin 37 is elastic. Since it is only necessary to correspond to the recess 31C of the member 31, for example, the positional relationship between the locking portion 35K of the slide member 35 and the pin 37 may be somewhat rough, and manufacturing is easy and inexpensive. It can be done.
[0020]
FIG. 3 shows another embodiment. The difference from the above-described embodiment is that a cover portion 43 covering the elastic stopper 41 and the like is integrally provided on the upper portion of the slide member 35, and the cover portion 43 is provided with this cover portion 43. This is the point that a push button 45 that can press the elastic stopper 41 is provided. 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]
【The invention's effect】
As can 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 can be prevented from being inadvertently dropped from the punch guide. It is easy to manufacture and can be provided at low cost, and can solve the conventional problems as described above.
[Brief description of the drawings]
FIG. 1 is an operation explanatory view and a side view showing main parts of a mold according to an embodiment of the present invention.
FIGS. 2A and 2B are an operation explanatory view and a side view showing main parts of a mold according to an embodiment of the present invention. FIGS.
FIGS. 3A and 3B are an operation explanatory view and a side view showing a main part of a mold according to another embodiment of the present invention. FIGS.
FIG. 4 is an explanatory view showing a partial cross section of a general mold;
FIG. 5 is a cross-sectional explanatory diagram of a configuration in which a conventional stripper plate is attached and detached.
[Explanation of symbols]
1 Mold 3 Punch guide 5 Punch body 11 Stripper plate 31 Elastic member (leaf spring)
31C Concave portions 31K, 35K, 41K Locking portion 35 Slide member 37 Deformation restricting portion (pin)
41 Elastic stopper

Claims (2)

In a die having a stripper plate detachably attached to a lower end portion of a cylindrical punch guide in which a punch body is movably moved up and down, the stripper plate engages with an engagement recess formed on an outer peripheral surface of the stripper plate. An elastic member having a locking portion that can hold the lower end of the punch guide is provided at a lower portion of the punch guide, and the elastic member abuts on the outer surface above the locking portion to freely restrict deformation in the outward direction. A slide member provided with a deformation restricting portion that is allowed to be deformed in an outward direction corresponding to a concave portion formed on the outer side of the engaging portion in the elastic member can be moved and fixed in the vertical direction below the punch guide. A mold characterized by providing. 2. The mold according to claim 1, wherein when the deformation restricting portion provided in the slide member is in contact with the outer side surface of the elastic member, the engagement portion formed on the slide member is disengaged. mold, characterized in that the elastic stopper with the engagement portion of the universal includes the punch guide.

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