JP2000108091A - Manual punch retainer device for press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily exchange a cam plate and to miniaturize a product by threadably forming a male screw part into an inserting screw hole. SOLUTION: On a supporting plate 3, an inserting screw hole 3a is punched at the center and supporting plate connecting pores 3 communicating with supporting plate connecting holes are formed at four corners. In a cam tool 4, a cam plate 4b provided with an oblique surface 4b1 whose tip lower part is formed in a downward and inclined shaped on an upper part is provided at a tip of a slide shaft 4a inserted into the inserting screw hole 3a of the supporting plate 3 and an arm piece 4c mounted with a screw 4b2 is rotatably provided by flanges 4a1, 4a1. In the rear part of the slide shaft 4a, a male screw part 4a2 and a rotating handle 4c are provided. In the inserting screw hole 3a, the male screw part 4a2 is formed so as to be insertable into the inserting screw hole 3a. Plate thickness of the cam plate 4b is set according to required stroke. An upper plate 5 is provided on an upper surface of a retainer block 1 and upper plate connecting pores communicating with upper plate connecting holes are provided at four portions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual press machine for punching or not punching a workpiece which is continuously fed on a press machine and pressing the workpiece. The present invention relates to a punch retainer device.

[0002]

2. Description of the Related Art As a conventional manual punch retainer for presses, the Company holds the right to use the actual punch retainer 2-220.
No. 89, the punch protrudes from the lower portion of the retainer block by the amount of the cam lift when the cam plate advances, and the punch retracts by the amount of the cam lift into the retainer block when the cam plate retreats. In a punch retainer device for a press, an operating rod is rotatably inserted into and supported by a hanging arm piece at a rear end of a cam plate, a handle is fixed to a rear end of the operating rod, and a retaining member is provided at a front portion of the operating rod. A manual punch retainer device for a press, characterized in that a screw portion is provided at the front end of the operation rod, and a screw hole for screwing the screw portion of the operation rod is provided in the retainer block. I have.

[0003]

In the above embodiment, when the cam plate protrudes from the retainer block, the cam plate is liable to be deformed when it is accidentally dropped, and the threaded portion at the tip is also exposed. The screw may be damaged and cannot be used. Furthermore, since the cam plate is fixed to the arm piece with a bolt, it takes time to replace the cam plate. Furthermore, since the compression springs are provided at four locations, there is a problem that the cost is increased and the retainer block is inevitably large. Since the thickness of the cam plate is constant, only a constant stroke can be used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and uses a standardized commercially available punch to reliably protect a cam plate and the like against a drop impact and to easily replace the cam plate. It is intended to provide a manual punch retainer device for a press capable of reducing the size of a product.

[0005]

In order to achieve the above object, as a means for achieving the above object, when the cam plate advances, the punch projects from the lower surface of the retainer block by a stroke, and when the cam plate retreats, the punch moves inside the retainer block. In a manual manual punch retainer device for a press configured to draw in the stroke, a support plate having an insertion screw hole is provided at the rear end of the retainer block, and a top end of a slide shaft inserted into the insertion screw hole is provided with an upper portion. An arm piece having a cam plate attached thereto is rotatably provided, a male screw portion is provided at a rear portion of the slide shaft, and a cam tool is formed so that the male screw portion can be screwed into the insertion screw hole. Become. Further, two compression springs are protrudingly provided behind the punch set block and behind the punch, and the arrangement of the punches and the compression springs is arranged in a plane triangular shape. Further, a fitting portion is formed on the bottom of the cam plate and on the upper portion of the arm to detachably attach the cam to the arm from above. Furthermore, various commercially available punches with a collar can be used,
The thickness of the cam plate can be changed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A retainer block 1 has a through hole 1b for punches and two mounting holes 1c for springs formed in a plane isosceles triangular shape at the bottom of a deep groove 1a formed below the front upper surface. And forming a slide groove 1d downward from the upper surface from the center to the rear,
Above it, a step portion 1d1 for supporting a cam plate described later is provided.
The upper plate has four upper plate connection holes 1d2, and the rear surface has four support plate connection holes 1d3. 2
Is a punch set block, which moves up and down in the deep groove 1a. The punch set block has a stepped punch hole 2a for mounting a punch, which will be described later, in the center slightly forward, and an oblique shape for guiding the cam plate to the rear end upper surface. The guide surface 2b is formed. The shape of the stepped punch hole 2a is adapted to the shape of the flange of various punches with a flange. 3 is a support plate,
An insertion screw hole 3a is formed at the center, and a support plate connection hole 3b communicating with the support plate connection hole 1d3 is formed at four corners. In addition, a configuration in which a through hole is formed in the center of the support plate 3 and a nut is fixed at the same position may be used. Reference numeral 4 denotes a cam, which is a screw 4b2 which is a cam plate 4b having a slope 4b1 having a lower end formed in a downwardly inclined shape at the upper end of the slide shaft 4a inserted into the insertion screw hole 3a of the support plate 3. The attached arm piece 4c is rotatably provided by the flanges 4a1 and 4a1, and a male screw part 4a2 is provided at the rear of the slide shaft 4a.
And a turning handle 4c, and the male screw portion 4a2 is formed so as to be able to be screwed into the insertion screw hole 3a. The thickness of the cam plate 4b may be set according to the required stroke. Reference numeral 5 denotes an upper plate provided on the upper surface of the retainer block 1, and four upper plate connecting holes 5a communicating with the upper plate connecting holes 1d2 are provided. Reference numeral 6 denotes a compression spring for pushing the punch set block 2 upward, and is mounted in the spring mounting hole 1c. 7 is the upper plate connection hole 1
It is a fixing screw screwed into d2. 8 is a support plate connection hole 1d
3 is a support screw that is screwed into 3. Reference numeral 9 denotes a commercially available punch with a collar. In the embodiment of the present invention, the number of the compression springs 6 is not necessarily two.

An example of use of the manual punch retainer device for a press constructed as described above will be described below. When punching is not performed, the turning handle 4c is rotated counterclockwise to remove the male screw portion 4a2 from the insertion screw hole 3a of the support plate 3,
Move the slide shaft 4a backward, and pull the cam plate 4b1 backward from the punch set block 2. At this time, the punch set block 2 is pushed upward by the compression spring 6, and at the same time, the flanged punch 9 is also raised.

Next, when performing the punching process, the cam plate 4b is pushed by grasping the rotating handle 4c and pushing it forward.
Of the punch set block 2 and the upper plate 5
When the punch set block 2 is lowered by lowering the punch set block 2 and the punch 9 is also lowered, the turning handle 4c is finally rotated clockwise to screw the male screw portion 4a into the insertion screw hole 3a of the support plate 3. The punch with a collar 9 (punch set block 2) is supported and fixed, and punching is performed.

Next, another embodiment will be described. This cam tool 24 has a rotatable arm piece 24c having a convex fitting portion 24c1 formed on the top of a slide shaft 24a similar to the above.
A cam plate 24 having a concave fitting portion 24b1 formed at a lower rear portion so as to be detachably engaged with the convex fitting portion 24c1 from above.
b.

The cam 24 allows the cam plate 24b to be easily attached and detached from above, thereby facilitating assembly and replacement.

Further, as another embodiment, in a punch with a flange to be attached to a punch set block, the punch with a flange 9 of the first embodiment has a flat bottom surface, but has a tapered bottom surface. The stepped punch holes 2a are changed so that various types of punches with a brim, such as those having a thick brim, can be used. Further, the stroke length can be adjusted by changing the thickness of the cam plate, and at this time, it can be used by processing such as positioning the step portion of the retainer block downward.

The flanged punch in the above-described embodiment can be any commercially available punch having a diameter of each type. A screw is screwed into a punch set block and various punches are fixed from the side. May be used. Further, the shape of each fitting portion of the cam plate may be another shape as long as it has a similar function. Further, as a method of attaching to the press machine, a vertical hole is provided in the upper plate and the retainer block and fixed with a bolt or the like.

[0013]

The cam plate does not come out of the retainer block even though it is a manual type, and it is not deformed by an impact when dropped. 2. By providing an external thread at the rear of the slide shaft,
There is no damage to the floor when falling. 3. By forming the punch and the compression spring in a triangular shape in a plane, the punch can be moved up and down smoothly, and since four compression springs are not required unlike the conventional product, the retainer block can be downsized. 4. The cam plate can be easily attached to and detached from the arm piece, which is effective during assembly and replacement. 5. Various punches with a collar can be used. 6. The stroke length can be changed by changing the thickness of the cam plate.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal front view of a manual punch retainer device for a press according to a first embodiment of the present invention, in which a cam tool is moved rearward.

FIG. 2 is a partially longitudinal front view of the manual punch retainer device for a press according to the first embodiment of the present invention, in which a cam tool is moved forward;

FIG. 3 is a plan view of a retainer block and a support plate of the manual punch retainer device for a press according to the first embodiment of the present invention.

FIG. 4 is a plan view of an upper plate of a manual punch retainer device for a press showing the first embodiment of the present invention.

FIG. 5 is a plan view of a punch set block of the manual punch retainer device for a press showing the first embodiment of the present invention.

FIG. 6 is a front view of a cam device of a manual punch retainer device for presses according to a second embodiment of the present invention.

FIG. 7 is a plan view of a cam tool of a manual punch retainer device for presses according to a second embodiment of the present invention.

[Description of Signs] 1 ---- Retainer Block 1a- Deep Groove 1b- Through Hole for Punch 1c- Mounting Hole for Spring 2 ---- Punch Set Block 2a- Punch Hole with Step 2b- Guide Surface 3- --- Support plate 3a --- Penetration screw hole 3b --- Support plate connection hole 4-- Cam component 4a --- Slide body 4b-Cam plate 4c --- Rotating handle 5-- Retainer block 5a --- Upper plate Connection hole 6 ---- Compression spring 7 ---- Fixed screw 8 ---- Support screw

Claims (5)

[Claims] 1. A manual punch retainer device for a press, wherein the punch projects from the lower surface of the retainer block by a stroke when the cam plate advances, and the punch is retracted into the retainer block by the stroke when the cam plate retreats. At the rear end of the retainer block is provided a support plate having a through-screw hole, and at the tip of a slide shaft inserted into the through-screw hole, an arm piece having a cam plate mounted thereon is rotatably provided, A manual punch retainer device for a press, comprising: a male screw portion provided at a rear portion of a slide shaft; and a cam member formed so that the male screw portion can be screwed into the insertion screw hole. 2. The apparatus according to claim 1, wherein two compression springs are protrudingly provided behind the punch set block and behind the punch, and the arrangement of the punch and the compression spring is arranged in a plane triangular shape. Item 2. A manual punch retainer device for a press according to Item 1. 3. A fitting portion is formed on a bottom portion of the cam plate and on an upper portion of the arm so that the cam plate can be detachably attached to the arm from above. A manual punch retainer device for press as described in the above. 4. The manual punch retainer according to claim 1, wherein the punch attached to the punch set block is a punch with various flanges. 5. The manual punch retainer according to claim 1, wherein the stroke length can be adjusted by changing the thickness of the cam plate.