CN218425108U

CN218425108U - Quick-change punch

Info

Publication number: CN218425108U
Application number: CN202222611068.6U
Authority: CN
Inventors: 叶显凤; 李国旗; 司圆圆
Original assignee: Jouder Precision Industry Kunshan Co ltd
Current assignee: Jouder Precision Industry Kunshan Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-02-03
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a quick change drift relates to stamping die technical field. The quick-change punch comprises a base, a punch body and a locking assembly. The base is provided with a fixing hole, and the side wall of the fixing hole is provided with a locking hole which penetrates through the surface of the base; a punch body, one end of which is inserted into the fixing hole from the top surface of the base; the locking assembly comprises an elastic piece, a locking pin and a locking piece, wherein the locking pin is movably arranged in the locking hole, the elastic piece is arranged in the locking hole, the elastic piece can drive the locking pin to move towards the direction away from the punch main body, and the locking piece is fixedly arranged in the locking hole and abutted to the locking pin so that the locking pin is abutted to the side wall of the punch main body. The quick-change punch has high reliability, and is convenient to operate when the punch is changed, so that the efficiency of changing the punch is improved.

Description

Quick-change punch

Technical Field

The utility model relates to a stamping die technical field especially relates to a quick change drift.

Background

A plurality of hole sites are arranged on a stamping product for meeting the requirements of wire passing or assembly and the like, and the processing of the hole sites is realized by a punching mechanism of a stamping die. When the punching operation is performed on the punched product, the punch is easily worn or even damaged, and once the punch is worn or damaged, the punched product is poor, so that the punch needs to be frequently disassembled, repaired or replaced.

In the existing quick-change punch, a side pin type quick-change punch is mostly adopted. The side pin type quick-change punch mainly utilizes the side pin to clamp the punch, and when the punch needs to be changed, only the side pin needs to be pulled out. However, the side pin is mostly driven by a spring to be inserted into the locking groove of the punch, and the side pin is separated from the locking groove due to vibration during use, so that the punch falls off. Moreover, when the punch is replaced, the operator is difficult to pull out the side pin, which reduces the efficiency of replacing the punch.

In view of the above problems, there is a need to develop a quick-change punch to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick change drift, the reliability is higher, and the operation of being convenient for when changing the drift has improved the efficiency of changing the drift.

To achieve the purpose, the utility model adopts the following technical proposal:

a quick-change punch comprising:

the base is provided with a fixing hole, and the side wall of the fixing hole is provided with a locking hole penetrating to the surface of the base;

a punch body, one end of which is inserted into the fixing hole from the top surface of the base;

the locking assembly comprises an elastic piece, a locking pin and a locking piece, wherein the locking pin is movably arranged in the locking hole, the elastic piece is arranged in the locking hole, the elastic piece can drive the locking pin to move towards the direction away from the punch main body, and the locking piece is fixedly arranged in the locking hole and abutted to the locking pin so that the locking pin is abutted to the side wall of the punch main body.

Preferably, the locking pin comprises a locking part and a driving part which are connected, the diameter of the driving part is larger than that of the locking part, a step is arranged in the locking hole, the elastic piece is sleeved on the locking part, and two ends of the elastic piece are respectively abutted against the step and the driving part.

Preferably, the inner wall of the locking hole is provided with an internal thread, and the outer surface of the locking piece is provided with an external thread matched with the internal thread.

Preferably, the side wall of the punch body is concavely provided with a locking groove, and the locking pin is inserted into the locking groove.

Preferably, one end of the locking pin inserted into the locking groove is of a ball head structure, and the inner surface of the locking groove is a spherical surface.

Preferably, the quick-change punch further comprises a support, the support is arranged in the fixing hole, and the support abuts against one end, inserted into the fixing hole, of the punch body.

Preferably, the quick-change punch further comprises a backing plate, and the backing plate is arranged on the bottom surface of the base.

Preferably, the base is provided with a mounting hole.

Preferably, the base is provided with a positioning hole.

Preferably, the elastic member is a spring.

The utility model has the advantages that:

the utility model provides a quick change drift. In this quick-change punch, the locking piece can lock the punch body in the fixing hole by abutting the locking pin against the side wall of the punch body. Moreover, the locking piece is always abutted to the locking pin, so that the locking pin cannot be separated from the punch body even if vibration exists in the stamping process, and the reliability of the quick-change punch is ensured. When the drift main part needs to be replaced, after the locking piece is removed, the elastic piece drives the locking pin to be away from the drift main part, the drift main part can be replaced, and the operation is convenient.

The quick-change punch has high reliability, is convenient to operate when the punch is replaced, and improves the efficiency of replacing the punch.

Drawings

Fig. 1 is a schematic structural view of a quick-change punch provided by the present invention;

fig. 2 is an exploded view of the quick-change punch provided by the present invention;

fig. 3 is a top view of the quick-change punch provided by the present invention;

fig. 4 isbase:Sub>A partial enlarged view taken atbase:Sub>A-base:Sub>A in fig. 3.

In the figure:

1. a base; 2. a punch body; 3. a locking assembly; 4. a support member; 5. a base plate;

11. a fixing hole; 12. a locking hole; 13. mounting holes; 14. positioning holes; 21. a locking groove; 31. an elastic member; 32. a locking pin; 33. a locking member;

321. a locking portion; 322. a drive section.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.

A plurality of hole sites are arranged on a stamping product for meeting the requirements of wiring or assembly and the like, and the hole sites are processed by a punching mechanism of a stamping die. When the punching operation is performed on the punched product, the punch is easily worn or even damaged, and once the punch is worn or damaged, the punched product is poor, so that the punch needs to be frequently disassembled, repaired or replaced.

In the existing quick-change punch, a side pin type quick-change punch is mostly adopted. The side pin type quick-change punch mainly utilizes the side pin to clamp the punch, and when the punch needs to be changed, only the side pin needs to be pulled out. However, the side pin is mostly driven by a spring to be inserted into the locking groove of the punch, and the side pin may be disengaged from the locking groove due to vibration during use, so that the punch may fall. Moreover, when the punch is replaced, the operator is difficult to pull out the side pin, which reduces the efficiency of replacing the punch.

The present embodiment provides a quick-change punch. As shown in fig. 1-4, the quick-change punch includes a base 1, a punch body 2, and a locking assembly 3. The base 1 is provided with a fixing hole 11, and the side wall of the fixing hole 11 is provided with a locking hole 12 penetrating to the surface of the base 1. One end of the punch body 2 is inserted into the fixing hole 11 from the top surface of the base 1. The locking assembly 3 comprises an elastic piece 31, a locking pin 32 and a locking piece 33, wherein the locking pin 32 is movably arranged in the locking hole 12, the elastic piece 31 is arranged in the locking hole 12, the elastic piece 31 can drive the locking pin 32 to move towards the direction far away from the punch main body 2, and the locking piece 33 is fixedly arranged in the locking hole 12 and abutted against the locking pin 32, so that the locking pin 32 is abutted against the side wall of the punch main body 2.

In this quick-change punch, the lock 33 can lock the punch body 2 in the fixing hole 11 by causing the lock pin 32 to abut against the side wall of the punch body 2. Moreover, since the lock member 33 always abuts against the lock pin 32, even if there is vibration during punching, the lock pin 32 does not come off the punch body 2, ensuring reliability of quick-change punch. When the punch main body 2 needs to be replaced, after the locking piece 33 is removed, the elastic piece 31 drives the locking pin 32 to be away from the punch main body 2, and the punch main body 2 can be replaced conveniently.

As shown in fig. 2, the locking pin 32 includes a locking portion 321 and a driving portion 322 connected to each other, a diameter of the driving portion 322 is larger than a diameter of the locking portion 321, a step is disposed in the locking hole 12, the locking portion 321 is sleeved with the elastic member 31, and two ends of the elastic member 31 respectively abut against the step and the driving portion 322.

The elastic member 31 is sleeved on the locking portion 321, so that the space requirement for installation can be reduced, and the overall size of the base 1 can be reduced. When the operator removes the locking member 33, the elastic member 31 can press the driving portion 322 to move the locking pin 32 away from the punch body 2, thereby replacing the punch body 2.

Specifically, the elastic member 31 is a spring. The spring is simple in structure, long in service life and low in cost, and can reduce the cost on the premise of meeting the requirements.

Preferably, the inner wall of the locking hole 12 is provided with an internal thread, and the outer surface of the locking piece 33 is provided with an external thread adapted to the internal thread. It will be appreciated that the locking piece 33 is threadedly coupled to the locking hole 12, enabling the locking pin 32 to compress elastically and gradually approach the punch body 2 as the locking piece 33 is gradually screwed into the locking hole 12, and eventually abut against the punch body 2 to lock it. Moreover, the elastic member 31 can always exert an elastic force on the locking member 33 by the locking pin 32, and can prevent the locking member 33 from being loosened by vibration, thereby further improving the reliability of the quick-change punch.

When it is necessary to replace the punch body 2, the operator gradually unscrews the locking piece 33 out of the locking hole 12, but does not need to disengage the locking piece 33 from the locking hole 12, and only needs to ensure that the locking pin 32 is completely retracted into the locking hole 12, and the punch body 2 can be replaced.

In other embodiments, the locking piece 33 may also be an expanding pin, and the locking pin 32 is abutted on the punch body 2 by the expanding force.

As shown in fig. 2 and 4, the side wall of the punch body 2 is concavely provided with a locking groove 21, and a locking pin 32 is inserted into the locking groove 21. The punch body 2 is locked only by pressure, the locking is not firm enough, and the locking pin 32 is inserted into the locking groove 21, so that the punch body 2 can be prevented from falling off, and the reliability of the quick-change punch is improved.

Specifically, one end of the locking pin 32 inserted into the locking groove 21 is of a ball head structure, and the inner surface of the locking groove 21 is a spherical surface. It can be understood that bulb structure and sphere can the adaptation laminating, prevent effectively that drift main part 2 from rocking in fixed orifices 11, precision when having improved the punching press operation to improve the qualification rate of punching press product. Moreover, the ball head structure has no sharp structure, so that the surface of the punch main body 2 is not damaged by pressure when the locking pin 32 is pressed against the punch main body 2 by the locking piece 33, and the service life of the punch main body 2 is prolonged.

It will be appreciated that the end of the locking pin 32 inserted into the locking groove 21 may also have other shapes, the inner surface of the locking groove 21 being adapted to the locking pin 32. If the shape of the end of the locking pin 32 is not a ball head structure, an anti-rotation structure is required to prevent the locking pin 32 from being unable to fit with the inner surface of the locking groove 21 after rotating.

As shown in fig. 2 and 4, the quick-change punch further includes a holder 4, the holder 4 is disposed in the fixing hole 11, and the holder 4 abuts against one end of the punch body 2 inserted into the fixing hole 11. It can be understood that, if the fixing hole 11 of the base 1 is a blind hole, the punch body 2 abuts against the bottom of the fixing hole 11, which causes the bottom of the fixing hole 11 to be worn or even deformed during a long-term use, resulting in a change in the height of the punch, and selecting a high-strength material will cause an increase in the cost.

And the fixed orifices 11 are through holes, the punch body 2 is abutted against the supporting piece 4, the supporting piece 4 can be abutted against the die to support the punch body 2, and the supporting piece 4 is separated from the base 1, so that the supporting piece 4 can be made of high-strength materials independently and can also be replaced, and the supporting performance of the punch body 2 is ensured.

It will be appreciated that the punch body 2 is pressed against the die by the support 4, which may also cause damage to the surface of the die. To solve this problem, the cross-sectional area of the end of the support 4 remote from the punch body 2 is larger than the cross-sectional area of the end close to the punch body 2, thereby reducing the pressure of the punch body 2 acting on the die.

Preferably, the quick-change punch further comprises a backing plate 5, and the backing plate 5 is arranged on the bottom surface of the base 1. When the punch mounting surface is machined on the die, the angle and the flatness of the mounting surface cannot completely meet the requirements, and the die is larger, so that the die needs to be positioned on the machine again in secondary machining, and the secondary machining is inconvenient. And set up backing plate 5 in the bottom surface of base 1, when the angle of drift main part 2 needs the adjustment, operating personnel only need polish backing plate 5 can, the simple operation.

As shown in fig. 1 to 3, the base 1 is provided with a mounting hole 13. The mounting screws are threaded into the mold through the mounting holes 13 to secure the base 1 to the mounting surface of the mold. Specifically, the base 1 is provided with two mounting holes 13, and the two mounting holes 13 are counter bores.

Preferably, the base 1 is provided with a positioning hole 14. Because the precision requirement of the hole of the product is high, the base 1 needs to be provided with a positioning hole 14, the mounting surface of the die is also provided with a corresponding hole, after the quick-change punch is mounted on the mounting surface of the die, a positioning pin is inserted into the positioning hole 14, and the positioning pin is inserted into the hole on the die to position the quick-change punch.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A quick-change punch, comprising:

the base (1), the base (1) is provided with a fixing hole (11), and the side wall of the fixing hole (11) is provided with a locking hole (12) penetrating through the surface of the base (1);

a punch body (2), wherein one end of the punch body (2) is inserted into the fixing hole (11) from the top surface of the base (1);

locking Assembly (3), including elastic component (31), stop pin (32) and locking piece (33), stop pin (32) activity set up in locking hole (12), elastic component (31) can drive stop pin (32) move towards the direction of keeping away from drift main part (2), locking piece (33) fixed set up in locking hole (12) and butt stop pin (32) so that stop pin (32) butt the lateral wall of drift main part (2).

2. The quick-change punch according to claim 1, characterized in that the locking pin (32) comprises a locking part (321) and a driving part (322) which are connected, the diameter of the driving part (322) is larger than that of the locking part (321), a step is arranged in the locking hole (12), the elastic piece (31) is sleeved on the locking part (321), and two ends of the elastic piece (31) are respectively abutted against the step and the driving part (322).

3. The quick-change punch according to claim 1, characterized in that the inner wall of the locking hole (12) is provided with an internal thread and the outer surface of the locking element (33) is provided with an external thread adapted to the internal thread.

4. Quick-change punch according to claim 1, characterised in that the side wall of the punch body (2) is recessed with a locking groove (21), the locking pin (32) being inserted into the locking groove (21).

5. The quick-change punch according to claim 4, characterized in that the end of the locking pin (32) inserted into the locking groove (21) is of a ball-head structure, and the inner surface of the locking groove (21) is of a spherical surface.

6. The quick-change punch according to claim 1, characterized in that it further comprises a support (4), the support (4) being arranged in the fixing hole (11), the support (4) abutting against an end of the punch body (2) inserted in the fixing hole (11).

7. The quick-change punch according to claim 1, characterized in that it further comprises a backing plate (5), the backing plate (5) being arranged on the bottom face of the base (1).

8. The quick-change punch as claimed in claim 1, characterized in that the base (1) is provided with a mounting hole (13).

9. The quick-change punch as claimed in claim 1, characterized in that the base (1) is provided with a locating hole (14).

10. The quick-change punch as claimed in claim 1, characterized in that the resilient element (31) is a spring.