JP2000051979A - Punch guide device and stripper plate used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punch guide device and a stripper plate used therefor to increase durability and fitting force as well at the time of attaching or detaching the stripper plate to or from a punch guide. SOLUTION: In a punch guide device 1 loading a stripper plate 21 attachablly and detachablly through a ring-like attaching tool 19 at the top end part of a cylindrical punch guide 3, the attaching tool 19 is in a ring shape where its both ends 23A, 23B are abutted on or arranged closely to each other and is made in a non-circular shape provided with plural elastic deformed parts 23 at plural positions which abut and energize so as to expand against the inner peripheral wall of the punch guide 3 and further, in a peripheral groove formed on the outer peripheral surface of a loading wall to the punch guide 3, a partially cut non circular attaching tool 19 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a punch guide device constituting a part of a punch die used for a punch press and a stripper plate used therefor.

[0002]

2. Description of the Related Art As a punching apparatus 101 conventionally used for performing a punching process on a work in cooperation with a die in a punch press such as a turret punch press, as shown in FIG. 103
Is mounted with a punch body 105. A retainer 107 is provided on the upper flange 103F of the punch guide 103.
Is installed.

A punch head 109 is screwed to the upper end of the punch body 105, and a punch head tightening means 113 is engaged with a tapered portion 111 formed on the outer periphery of the punch head 109. Moreover,
A stripper spring 117 is interposed between the retainer 107 and the punch head 109.

[0004] A stripper plate 1 is attached to the leading end (lower end) of the punch guide 103 via an O-ring 119.
21 is detachably attached.

[0005]

By the way, in the above-described conventional punching apparatus 101, since the stripper plate 121 is detachably provided to the punch guide 103 via the O-ring 119, the mounting and dismounting are repeated. However, the O-ring 119 has been peeled off, resulting in poor durability. In addition, the mounting force was weak, and there was a concern that it would fall off during use.

SUMMARY OF THE INVENTION An object of the present invention is to provide a punch guide apparatus and a stripper plate used for the same, which increase the durability when attaching and detaching the stripper plate to and from the punch guide and increase the mounting force. is there.

[0007]

According to a first aspect of the present invention, there is provided a punch guide device according to the present invention, in which a stripper plate can be attached to and detached from a distal end portion of a cylindrical punch guide via a ring-shaped fixture. In the punch guide device attached to the above, the mounting tool has a ring-like shape in which both ends are in contact with or in proximity to each other, and has an elastically deforming portion that urges and contacts the inner surface of the punch guide so as to expand. It is characterized by having a non-circular shape having a plurality of locations.

Accordingly, the stripper plate is detachably mounted on the punch guide via the mounting tool.
And, since the mounting tool is formed in a ring shape in which both ends are in contact with or approaching to each other, and includes a plurality of non-circular elastic deformation portions, when the stripper plate is mounted on the punch guide, When the elastically deforming portion is expanded and pressed against the punch guide, the durability is improved, and the mounting force is improved.

According to a second aspect of the present invention, there is provided the punch guide device according to the first aspect, wherein the mounting member is made of a round bar.

[0010] Therefore, the mounting member is made of a round bar material, so that it can be easily inserted into the punch guide.

According to a third aspect of the present invention, there is provided a stripper plate detachably mounted on a tip end portion of a punch guide, wherein a part of the stripper plate is formed in a circumferential groove formed on an outer peripheral surface of a mounting portion for the punch guide. It is characterized by comprising a cut non-circular attachment.

[0012] Therefore, a non-circular mounting tool, part of which is cut into a circumferential groove formed on the outer peripheral surface of the mounting portion to the punch guide, is inserted, and the stripper plate is mounted on the punch guide. In addition, since the mounting member has a non-circular shape, the mounting force is improved and the durability is improved.

According to a fourth aspect of the present invention, there is provided the punch guide device according to the third aspect, wherein the attachment includes a plurality of portions having different curvatures.

Therefore, by providing a plurality of portions having different curvatures in the mounting tool, the mounting tool is expanded at a plurality of locations and urges against the punch guide to further increase the mounting force.

According to a fifth aspect of the present invention, there is provided the punch guide device according to the third or fourth aspect, wherein the mounting member is made of a round bar.

[0016] Therefore, by manufacturing the mounting tool from a round bar material, the mounting tool can be easily inserted into the punch guide.

[0017]

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

Referring to FIG. 1, in a punch press such as a turret punch press, for example, a punch apparatus 1 used for performing a punching process on a work in cooperation with a die.
The punch body 5 is mounted on the punch guide 3. A retainer 7 is mounted on the upper flange 3F of the punch guide 3.

A punch head 9 is screwed onto the upper end of the punch body 5 and the punch head 9 is
The punch head tightening means 13 is engaged with a tapered portion 11 formed on the outer peripheral portion of the punch head. Moreover, a stripper spring 17 is interposed between the retainer 7 and the punch head 9.

A stripper plate 21 is detachably attached to a tip end (lower end) of the punch guide 3 via a fixture 19.

As shown in FIG. 2, the fitting 19 is made of an example of a round wire spring steel 23 as a ring-shaped round bar material in which both ends 23A and 23B are in contact with or close to each other. At the same time, elastic deformation portions 23 are provided at a plurality of places, for example, three places.
C and has a non-circular shape. In addition, as shown in FIG. 3, it is fitted into the circumferential groove 25 formed in the stripper plate 21 and is urged against the inner circumferential groove 3A of the punch guide 3 so as to expand. . That is, the round wire spring steel 23 is compressed from the outside to the outside as shown by the outer arrow portion with the inner arrow portion as a fulcrum in FIG. 2, so that a stronger force can be obtained. it can.

Further, as shown in FIG. 3, the force to return the round wire spring steel 23 is applied to the circumferential groove 3 of the punch guide 3.
A, when the round wire spring steel 23 tries to return further, the force is applied to the punch guide 3 side by the stripper plate 2.
It works to press 1.

Further, as shown in FIG. 4, since the round wire spring steel 23 is used, if the stripper plate 21 is pushed in, the round wire spring steel 23 escapes inward (arrow side). The mounting can be performed without the need for tools, and the durability can be improved.

FIG. 5 shows another embodiment instead of FIG. In FIG. 5, the round wire spring steel 23 has a square shape and elastic deformation portions 23C are provided at four places.
In this case as well, it has an action and an effect similar to those shown in FIG.

FIG. 6 shows the stripper plate 21 from the punch guide 3 and the pliers 27 for removing the punch guide 3 from the retainer 7. In FIG. 6, the pliers 27 are provided with arms 29 and 31, and a tip of the arm 29 and a tip of the arm 31 are rotatably provided by a pin 33. Moreover, grips 35 and 37 are integrally provided at the rear ends of the arms 29 and 31.

At the inner portions where the arms 29 and 31 are opposed to each other, blade portions 39A and 3A inclined inward are respectively provided.
9B; 41A and 41B are provided. Also, arm 2
The inner portions of the rear end portions of the stoppers 9 and 31 are stoppers 43 and 4 respectively.
It is 5. For example, the blade portions 39A and 41A
For a 1/4 "punch P, the blade portions 39B and 41B are for a 1/2" punch P, for example.

With the above structure, the arms 29 and 31 are pivoted about the pin 33, and when the stoppers 43 and 45 come into contact with each other as shown in FIG. I have.

When removing the stripper plate 21 from the punch guide 3 using the pliers 27, as shown in FIGS.
Since the inclined portions 21K are provided at opposing positions at the distal end of the tip 1, the blade portions 39A and 41A of the arms 29 and 31 of the pliers 27 are brought closer to the respective inclined portions 21K as shown by arrows in FIG. Then, as shown in FIG. 9, the hands are inserted into the grips 35 and 37, and the blade portions 39A and 41 are inserted.
The stripper plate 21 can be easily removed from the punch guide 3 by aligning the position A with the scissor 21K of the stripper plate 21 and raising the grips 35 and 37 of the pliers 27 upward.

Further, the retainer 7 is
When the punch guide 3 is removed from the retainer 7, as shown in FIG. 10, the inclined portions 7K are provided at opposing positions at the lower end of the retainer 7, so that each of the inclined portions 7K is provided.
As shown by the arrow in FIG. 10 to K, the blade portions 39A and 41A of the arms 29 and 31 of the pliers 27 are brought close to each other, and
As shown in FIG. 11, the grips 35 and 37 are put together with the hands, and the blades 39A and 41A are aligned, and the inclined portion 7 of the retainer 7 is
K and the grips 35 and 37 of the pliers 27 are lifted upward, so that the punch guide 3
But can be easily removed.

The present invention is not limited to the above-described embodiment of the invention, but can be embodied in other forms by making appropriate changes.

[0031]

As will be understood from the above description of the embodiments of the present invention, according to the first aspect of the present invention, the stripper plate is detachably attached to the punch guide via the attachment. . And, since the mounting tool is formed in a ring shape in which both ends are in contact with or approaching to each other, and includes a plurality of non-circular elastic deformation portions, when the stripper plate is mounted on the punch guide, Since the elastically deformable portion is expanded and pressed against the punch guide, the durability can be improved, and the mounting force can be improved.

According to the second aspect of the present invention, since the fixture is made of a round bar, it is easy to insert the fixture into the punch guide.

According to the third aspect of the present invention, a non-circular mounting tool, which is partially cut, is placed in a circumferential groove formed on the outer peripheral surface of the mounting portion to the punch guide, and the stripper plate is mounted on the punch guide. You. In addition, since the mounting member has a non-circular shape, it is possible to improve the mounting force and improve the durability.

According to the fourth aspect of the present invention, since the fitting has a plurality of portions having different curvatures, the fitting is expanded at a plurality of locations to urge against the punch guide to increase the mounting force. Can be further improved.

According to the fifth aspect of the present invention, since the mounting member is made of a round bar, it can be easily inserted into the punch guide.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a punch device embodying the present invention.

FIG. 2 is a plan view showing a main part of the present invention and a round wire spring steel as a fixture.

FIG. 3 is an enlarged view of a part viewed from an arrow III in FIG. 1;

FIG. 4 is an explanatory diagram for attaching a stripper plate to a punch guide.

FIG. 5 is a plan view showing another embodiment of the round wire spring steel replacing FIG. 2;

FIG. 6 is a plan view of the pliers.

FIG. 7 is a bottom view of the stripper plate.

FIG. 8 is an explanatory view of removing a stripper plate from a punch guide using a pliers.

FIG. 9 is an explanatory view of removing a stripper plate from a punch guide using a pliers.

FIG. 10 is an explanatory diagram of removing a punch guide from a retainer using a pliers.

FIG. 11 is an explanatory view of removing a punch guide from a retainer using a pliers.

FIG. 12 is a front sectional view of a conventional punch device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Punch device 3 Punch guide 3A Peripheral groove 5 Punch body 7 Retainer 9 Punch head 17, 21 Stripper spring 19 Attachment 23 Round wire spring steel 23A, 23B Both ends 23C Elastic deformation part 25 Peripheral groove 27 Plier

Claims (5)

[Claims] 1. A punch guide device in which a stripper plate is detachably attached to a distal end portion of a cylindrical punch guide via a ring-shaped mounting tool, wherein the mounting tool has a ring-shaped configuration in which both ends are in contact with or close to each other. A punch guide device having a non-circular shape provided with a plurality of elastically deforming portions that urge against the inner peripheral surface of the punch guide so as to expand. 2. The punch guide device according to claim 1, wherein the attachment is made of a round bar. 3. A stripper plate detachably mounted on a tip end portion of a punch guide, wherein a non-circular mounting tool partially cut is formed in a circumferential groove formed on an outer peripheral surface of a mounting portion to the punch guide. A stripper plate provided with: 4. The stripper plate according to claim 3, wherein the attachment includes a plurality of portions having different curvatures. 5. The stripper plate according to claim 3, wherein said mounting member is made of a round bar.