CN215315035U - One-time plastic step type chamfer via hole die - Google Patents

Abstract

The utility model belongs to the technical field of dies, and particularly relates to a one-time plastic step type chamfer via hole die. The utility model provides a one-time plastic step type chamfer via hole die aiming at the problems that the stamping process is complex and at least two sets of different stamping dies are needed to realize in the prior art, the one-time plastic step type chamfer via hole die comprises a lower die plate and an upper die plate, a punching channel is arranged in the lower die plate, a punching needle is arranged on the upper die plate, one end of the punching needle can extend into the punching channel by moving the upper die plate, a chamfer forming pressing plate for chamfer forming is further arranged between the lower die plate and the upper die plate, one end of the punching needle extends into the chamfer forming pressing plate, and a gap is formed between the chamfer forming pressing plate and the upper die plate. The utility model can punch the countersunk hole with the step chamfer at one time, has simple operation, can realize the punching process on one set of punching die, has low requirement on equipment and saves a large amount of labor cost.

Description

One-time plastic step type chamfer via hole die

Technical Field

The utility model belongs to the technical field of dies, and particularly relates to a one-time plastic step type chamfer through hole die.

Background

The stamping die is a special process device for processing materials into parts in cold stamping processing, and is called a cold stamping die and commonly called a cold stamping die. Stamping is a press working method in which a die mounted on a press is used to apply pressure to a material at room temperature to cause separation or plastic deformation of the material, thereby obtaining a desired part.

In the prior art, a stamping process adopted when stamping a counter sink with a step type chamfer on a large thin sheet metal part mostly comprises the following three steps: punching a bottom hole, punching and sinking an inclined hole containing a step, namely a step chamfer and a secondary fine punching round hole. Such a stamping process is complex and needs to be carried out by at least two different sets of stamping dies.

For example, chinese utility model patent discloses a punching press mould [ application number: 201220572416.7], the utility model comprises a male die, a female die and a blank pressing device, wherein guide posts are arranged on two sides of the male die, corresponding guide post holes are arranged on two sides of the female die, and characters on the protruded surface are arranged on the lower side surface of the blank pressing device.

The utility model discloses a have the advantage that can improve work efficiency greatly, but it still does not solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides a step type chamfer hole passing die which can simply and conveniently punch a primary plasticity with a step chamfer.

In order to achieve the purpose, the utility model adopts the following technical scheme:

one plasticity's step chamfer via hole mould, including lower bolster and cope match-plate pattern, the passageway that punches a hole has in the lower bolster, be equipped with the needle of punching a hole on the cope match-plate pattern, remove the cope match-plate pattern and can make the needle one end that punches a hole extend to in the passageway that punches a hole, still be equipped with between lower bolster and the cope match-plate pattern and be used for the fashioned chamfer shaping clamp plate of chamfer, punch a hole in needle one end extends to chamfer shaping clamp plate, the clearance has between chamfer shaping clamp plate and the cope match-plate pattern.

In the one-time plastic step type chamfer via hole die, a blank pressing insert is connected in the chamfer forming pressing plate, a needle passing channel is arranged in the blank pressing insert, one end of a punching needle extends into the needle passing channel, and the end part of the blank pressing insert is closer to the lower die plate than the end part of the punching needle.

In the one-step plastic stepped chamfer via hole die, the lower die plate is internally connected with the forming insert, the punching channel penetrates through the forming insert, the end part of the forming insert is provided with a chamfer forming boss around the edge of the punching channel, and the chamfer forming pressing plate is moved to enable the edge pressing insert to be pressed on the forming insert and the chamfer forming boss to extend into the needle passing channel.

In the one-step plastic step-type chamfer via hole die, the chamfer forming boss protrudes out of the surface of the lower die plate, and the outer diameter of the chamfer forming boss is gradually reduced from one end close to the forming insert to one end far away from the forming insert.

In the step type chamfer via hole die with one-step plasticity, a positioning groove forming boss is further arranged on the outer side of the chamfer forming boss and fixedly connected to the forming insert.

In the step type chamfering through hole die with one-step plasticity, the die further comprises a plate positioned between the lower die plate and the chamfering forming pressing plate, one side surface of the plate is attached to the chamfering forming boss, and the plate completely covers the punching channel.

In the one-time plastic step type chamfer via hole die, the edge pressing insert is movably connected with the chamfer forming pressing plate, and the forming insert is movably connected with the lower die plate.

In the one-time plastic step type chamfer via hole die, the axial lead of the punching channel, the axial lead of the needle passing channel and the axial lead of the punching needle are mutually overlapped.

In the one-time plastic step type chamfer via hole die, an elastic piece is arranged between the upper die plate and the chamfer forming pressing plate, the chamfer forming pressing plate is elastically connected with the upper die plate through the elastic piece, one end of the elastic piece is fixedly connected on the upper die plate, and the other end of the elastic piece penetrates through the gap and is pressed on the chamfer forming pressing plate;

or one end of the elastic piece is fixedly connected to the chamfer forming pressing plate, and the other end of the elastic piece penetrates through the gap and is pressed on the upper template.

In the above one-time plastic step-chamfer via-hole die, the elastic member includes a nitrogen spring.

Compared with the prior art, the utility model has the advantages that:

1. the utility model can punch the countersunk hole with the step chamfer at one time, has simple operation, can realize the punching process on one set of punching die, has low requirement on equipment and saves a large amount of labor cost.

2. The nitrogen spring is used as the elastic part, so that the design and the manufacture of the die are simplified, the die is convenient to mount and adjust, the service life of the die is prolonged, and the stability of the product quality is ensured.

Drawings

FIG. 1 is a schematic view of the lower and upper die plates of the present invention in a separated configuration;

FIG. 2 is a schematic structural view of the chamfer forming press plate of the present invention when stamping a sheet;

FIG. 3 is a schematic view of the punching pin of the present invention punching a sheet;

FIG. 4 is a schematic view of the stamped sheet;

in the figure: the device comprises a lower template 1, an upper template 2, a punching channel 3, a punching needle 4, a chamfer forming pressing plate 5, a gap 6, a blank pressing insert 7, a needle passing channel 8, a forming insert 9, a chamfer forming boss 10, a positioning groove forming boss 11, an elastic part 12, a plate 100, a stepped chamfer 200 and a bottom hole 300.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Combine fig. 1 and fig. 4 to show, a step chamfer via hole mould of plasticity once, including lower bolster 1 and cope match-plate pattern 2, passageway 3 that punches a hole has in the lower bolster 1, be equipped with punching pin 4 on the cope match-plate pattern 2, remove cope match-plate pattern 2 and can make 4 one end of punching pin extend to in the passageway 3 that punches a hole, still be equipped with between lower bolster 1 and the cope match-plate pattern 2 and be used for chamfer fashioned chamfer shaping clamp plate 5, 4 one end of punching pin extend to in chamfer shaping clamp plate 5, clearance 6 has between chamfer shaping clamp plate 5 and the cope match-plate pattern 2.

When the device is used, a plate 100 is placed on the surface of a lower template 1, an upper template 2 and a chamfer forming pressing plate 5 move downwards, the chamfer forming pressing plate 5 is firstly pressed on the plate 100, and because a gap 6 exists between the chamfer forming pressing plate 5 and the upper template 2, only the chamfer forming pressing plate 5 is pressed on the plate 100, and the lower template 1 is matched with the plate 100 to form a stepped chamfer 200. The upper die plate 2 continues to move downwards for the width of a gap 6, at the moment, the upper die plate 2 is pressed on the chamfer forming press plate 5, and the punching needle 4 punches on the plate 100 to form a bottom hole 300 communicated with the stepped chamfer 200. Therefore, the utility model can punch the counter sink with the step type chamfer 200 at one time, has simple operation, can realize the punching process on one set of punching die, has low requirement on equipment and saves a large amount of labor cost.

As shown in fig. 1, a blank holder insert 7 is connected in the chamfer forming pressing plate 5, a needle passing channel 8 is arranged in the blank holder insert 7, one end of the punching needle 4 extends into the needle passing channel 8, and the end of the blank holder insert 7 is closer to the lower die plate 1 than the end of the punching needle 4. The lower template 1 is internally connected with a forming insert 9, the punching channel 3 penetrates through the forming insert 9, the end part of the forming insert 9 is provided with a chamfer forming boss 10 around the edge of the punching channel 3, and the chamfer forming press plate 5 is moved to enable the edge pressing insert 7 to be pressed on the forming insert 9 and the chamfer forming boss 10 to extend into the needle passing channel 8. Here the extension of the chamfer forming boss 10 into the needle passage 8 is a condition which is accessible when no sheet material 100 is placed. When the sheet material 100 is placed for stamping, the edge pressing insert 7 and the chamfer forming boss 10 are matched with each other and respectively pressed on two sides of the sheet material 100 to form a step chamfer 200.

Preferably, the edge pressing insert 7 is movably connected with the chamfer forming pressing plate 5, and the forming insert 9 is movably connected with the lower template 1. The movable connection is convenient for installation and disassembly.

Preferably, the axial line of the punching channel 3, the axial line of the needle passing channel 8 and the axial line of the punching needle 4 coincide with each other. This improves the stability of the stamping process.

Referring to fig. 1 and 2, the chamfer forming boss 10 protrudes out of the surface of the lower template 1, and the outer diameter of the chamfer forming boss 10 gradually decreases from one end close to the forming insert 9 to one end far away from the forming insert 9.

Referring to fig. 2-4, a positioning groove forming boss 11 is further disposed on the outer side of the chamfer forming boss 10, and the positioning groove forming boss 11 is fixedly connected to the forming insert 9.

As shown in fig. 1, the punching die further comprises a plate 100 located between the lower template 1 and the chamfer forming pressing plate 5, wherein one side surface of the plate 100 is attached to the chamfer forming boss 10, and the plate 100 completely covers the punching channel 3.

As shown in fig. 2 and 3, an elastic member 12 is further disposed between the upper mold plate 2 and the chamfer forming press plate 5, the chamfer forming press plate 5 is elastically connected to the upper mold plate 2 through the elastic member 12, one end of the elastic member 12 is fixedly connected to the upper mold plate 2, and the other end of the elastic member 12 penetrates through the gap 6 and is pressed on the chamfer forming press plate 5; or one end of the elastic element 12 is fixedly connected to the chamfer forming pressure plate 5, and the other end penetrates through the gap 6 and is pressed on the upper template 2. When the sheet material 100 is not punched, the gap 6 is maintained conveniently by using the elastic force provided by the elastic part 12, so that the two-stage punching of the sheet material 100 by the chamfer forming pressing plate 5 and the upper die plate 2 in the punching process is realized.

Preferably, the elastic member 12 includes a nitrogen spring. The nitrogen spring is a novel elastic component using high-pressure nitrogen as a working medium, has small volume, large elasticity, long stroke, stable work, precise manufacture, long service life, gentle elasticity curve, no need of pre-tightening and the like, has the work which is difficult to finish by conventional elastic components such as metal springs, rubber, air cushions and the like, simplifies the design and manufacture of the die, facilitates the installation and adjustment of the die, prolongs the service life of the die, ensures the stability of the product quality, can also be designed into a nitrogen spring system to participate in the work as a part of the die, can conveniently realize the constant pressure and delayed action in the system, and is a new generation of optimal elastic component with flexible performance.

The working principle of the utility model is as follows: during the use, sheet material 100 is placed on 1 surface of lower bolster, and cope match-plate pattern 2 and chamfer shaping clamp plate 5 descend, because cope match-plate pattern 2 and chamfer shaping clamp plate 5 pass through elastic component 12 elastic connection, so there is clearance 6 between chamfer shaping clamp plate 5 and the cope match-plate pattern 2 at this moment. When the first section of stamping is carried out, only the edge pressing insert 7 in the chamfer forming pressing plate 5 is pressed on the plate 100, the other surface of the plate 100 is pressed on the chamfer forming boss 10 and the positioning groove forming boss 11, and the edge pressing insert 7 and the chamfer forming boss 10 are matched with each other to form a stepped chamfer 200 on the plate 100. The elastic member 12 is compressed to make the upper die plate 2 go down a width of the gap 6, at this time, the upper die plate 2 is pressed on the chamfer forming press plate 5, the punching needle 4 penetrates through the needle passage 8, and a bottom hole 300 communicated with the stepped chamfer 200 is formed on the plate 100 by punching. Therefore, the utility model can punch the counter sink with the step type chamfer 200 at one time, has simple operation, can realize the punching process on one set of punching die, has low requirement on equipment and saves a large amount of labor cost.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms lower die plate 1, upper die plate 2, punch channel 3, punch pin 4, chamfer forming platen 5, gap 6, hold-down insert 7, needle passage 8, forming insert 9, chamfer forming boss 10, detent forming boss 11, spring 12, blank 100, stepped chamfer 200, bottom hole 300, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (10)

1. The utility model provides a step chamfer via hole mould of plasticity once, includes lower bolster (1) and cope match-plate pattern (2), passageway (3) punch a hole have in lower bolster (1), be equipped with punching needle (4) on cope match-plate pattern (2), remove cope match-plate pattern (2) and can make punching needle (4) one end extend to in passageway (3) punch a hole, its characterized in that: still be equipped with between lower bolster (1) and cope match-plate pattern (2) and be used for chamfer fashioned chamfer shaping clamp plate (5), in punching pin (4) one end extended to chamfer shaping clamp plate (5), clearance (6) have between chamfer shaping clamp plate (5) and cope match-plate pattern (2).

2. The one-shot plastic stepped chamfer via die of claim 1, wherein: chamfer shaping clamp plate (5) in-connection have blank pressing mold insert (7), needle passageway (8) have been crossed in blank pressing mold insert (7), towards in needle passageway (8) is extended to punching needle (4) one end, blank pressing mold insert (7) tip is closer to lower bolster (1) than towards punching needle (4) tip.

3. The one-shot plastic stepped chamfer via die of claim 2, wherein: the lower die plate (1) is internally connected with a forming insert (9), the punching channel (3) penetrates through the forming insert (9), the end part of the forming insert (9) is provided with a chamfer forming boss (10) around the edge of the punching channel (3), and the chamfer forming pressing plate (5) is moved to enable the edge pressing insert (7) to be pressed on the forming insert (9) and enable the chamfer forming boss (10) to extend into the needle passing channel (8).

4. The one-shot plastic stepped chamfer via die of claim 3, wherein: the chamfer forming boss (10) protrudes out of the surface of the lower template (1), and the outer diameter of the chamfer forming boss (10) is gradually reduced from one end close to the forming insert (9) to one end far away from the forming insert (9).

5. The one-shot plastic stepped chamfer via die of claim 4, wherein: and a positioning groove forming boss (11) is further arranged on the outer side of the chamfer forming boss (10), and the positioning groove forming boss (11) is fixedly connected to the forming insert (9).

6. The one-shot plastic stepped chamfer via die of claim 3, wherein: the punching die is characterized by further comprising a plate (100) located between the lower die plate (1) and the chamfer forming pressing plate (5), wherein the surface of one side of the plate (100) is attached to the chamfer forming boss (10), and the plate (100) completely covers the punching channel (3).

7. The one-shot plastic stepped chamfer via die of claim 3, wherein: the edge pressing insert (7) is movably connected with the chamfer forming pressing plate (5), and the forming insert (9) is movably connected with the lower template (1).

8. The one-shot plastic stepped chamfer via die of claim 2, wherein: the axial lead of the punching channel (3), the axial lead of the needle passing channel (8) and the axial lead of the punching needle (4) are mutually overlapped.

9. The one-shot plastic stepped chamfer via die of claim 1, wherein: an elastic piece (12) is further arranged between the upper template (2) and the chamfer forming pressing plate (5), the chamfer forming pressing plate (5) is elastically connected with the upper template (2) through the elastic piece (12), one end of the elastic piece (12) is fixedly connected to the upper template (2), and the other end of the elastic piece (12) penetrates through the gap (6) and is pressed on the chamfer forming pressing plate (5);

or one end of the elastic piece (12) is fixedly connected on the chamfer forming pressing plate (5), and the other end penetrates through the gap (6) and is pressed on the upper template (2).

10. The one-shot plastic stepped chamfer via die of claim 9, wherein: the elastic member (12) includes a nitrogen spring.

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