CN220216426U - Combined punching die - Google Patents

Abstract

The utility model discloses a combined punching die, which is characterized in that: comprises an upper die holder, a lower die holder and two side punching mechanisms; an upper profiling module is arranged on the upper die holder, and a vertical punch is arranged on the upper profiling module; the lower die holder is provided with a lower profiling module; the side punching mechanism comprises a driving block, a driven block, a sliding seat, a reset spring and a flat punch; the driven block is horizontally matched with the sliding seat in a sliding manner; the lower end of the driving block is provided with a first inclined plane, and the driven block is provided with a second inclined plane matched with the first inclined plane; the reset spring is arranged between the driven block and the sliding seat, and the flat punch is fixed on the driven block. The utility model can punch the side mounting holes and the top mounting holes on the left side and the right side at one time, can doubly improve the processing efficiency, reduce the processing cost and simultaneously can ensure the hole position precision.

Description

Combined punching die

Technical Field

The utility model relates to a combined punching die.

Background

In the case of the press-working, it is necessary to press-work the side mounting holes N-2 on both left and right sides of the complex work piece N (see fig. 18) in addition to the top mounting hole N-1 on the top surface thereof. Products with similar processing requirements are more common in steam fittings. The original stamping process is divided into three steps, so that three sets of stamping dies are needed. Wherein the first set of dies is used to machine the top mounting hole N-1, the second set of left side mounting holes N-2, and the third set of right side mounting holes N-2, while three punches (hydraulic or press) are required for machining, three people are operating (three stations). Therefore, the method has the problems of large investment, high energy consumption, high production cost, low efficiency and difficult control of the position precision between the hole sites (positioning errors caused by switching and processing of different dies).

Disclosure of Invention

The utility model provides a combined punching die, which aims to solve the technical problem that the existing punching die cannot realize simultaneous punching processing of a top mounting hole and side mounting holes on the left side and the right side of the top surface of a workpiece.

In order to achieve the above purpose, the scheme of the utility model is as follows: a combined punching die is characterized in that: comprises an upper die holder, a lower die holder and two side punching mechanisms; the two side punching mechanisms are distributed symmetrically left and right; an upper profiling module is arranged on the upper die holder, and a vertical punch is arranged on the upper profiling module; the lower die holder is provided with a lower profiling module; the side punching mechanism comprises a driving block, a driven block, a sliding seat, a reset spring and a flat punch; the driving block is fixedly connected with the upper die holder; the sliding seat is fixedly connected with the lower die seat; the driven block is horizontally matched with the sliding seat in a sliding manner; the lower end of the driving block is provided with a first inclined plane, and the driven block is provided with a second inclined plane matched with the first inclined plane; the return spring is arranged between the driven block and the sliding seat, and the flat punch is fixed on the driven block; and the lower profiling module is provided with a vertical punch clearance hole and a flat punch clearance hole.

Preferably, two flat punches are provided on the driven block.

Further, the flat punch is detachably and fixedly connected with the driven block.

Further, three limiting blocks used for limiting three directions of the workpiece respectively are arranged on the lower profiling module and distributed in a triangular mode.

Preferably, the upper profiling module is concave; flat punch bit avoiding grooves are formed in two side parts of the upper profiling module; the lower profiling module is convex.

Further, a blanking hole is formed in the lower profiling module; the blanking hole is communicated with the vertical punch clearance hole and the horizontal punch clearance hole; the lower die holder is connected with a drawer in a sliding way; the drawer can collect the waste materials falling from the blanking holes.

Preferably, the return spring is a nitrogen spring or a compression spring.

The utility model has the beneficial effects that:

the first, the utility model can be used for one-time processing of the top mounting hole and the side mounting holes on the left and right sides of a workpiece (such as a left bracket of a lower thrust rod or a right bracket of a lower thrust rod), the working procedure is concentrated, the production efficiency can be improved exponentially, the number of processing working procedures, dies and workers can be reduced, the production cost can be reduced, the energy consumption can be reduced, and the position precision of each hole site can be ensured.

Secondly, the lower profiling module is internally provided with a blanking hole; the blanking hole is communicated with the vertical punch clearance hole and the horizontal punch clearance hole, so that stamping scraps at different positions can be concentrated into the blanking hole, a drawer which can be pulled out horizontally in a lateral direction is slidably arranged in the lower die holder, and the drawer can collect scraps which fall off in a stamping manner at three different positions on a workpiece, so that the scraps can be taken out conveniently in a lateral direction, and the device is very convenient;

thirdly, because the reset spring is arranged between the driven block and the sliding seat, the driven block compresses the reset spring and stores energy when punching and feeding, and the driving block moves upwards to lose acting force on the driven block when retracting, and at the moment, the reset spring can be extended to push the driven block to slide horizontally away from a workpiece, so that the purposes of automatic retracting and resetting are realized;

fourth, because the workpiece is placed on the convex lower profiling module before stamping, the workpiece is stably supported, and the three limiting blocks respectively limit the left and right wing plate parts and the top plate part of the workpiece, the workpiece is precisely positioned and cannot move at will, and the workpiece cannot move, so that the hole site is ensured to be very precise after stamping.

Drawings

Fig. 1-2 are schematic structural views of a combined punching die according to an embodiment of the present utility model.

Fig. 3-4 are schematic structural views of an upper die base and upper profiling modules thereon.

Fig. 5 is a model picture corresponding to fig. 4.

Fig. 6 is an enlarged view at a in fig. 4.

Fig. 7 is a schematic diagram of the structure of two side punching mechanisms, an upper die holder and a lower profiling module thereon.

Fig. 8 is an enlarged view at B in fig. 7.

Fig. 9-11 are schematic structural views of two side punch mechanisms, an upper die holder and a lower profiling module thereon when assembled with a workpiece.

Fig. 12 is a model picture corresponding to fig. 11.

Fig. 13-14 are schematic structural views of side-punching mechanisms.

Fig. 15-17 are schematic structural views of the lower profiling module.

Fig. 18 is a comparative view of the workpiece (i.e., the lower thrust rod left bracket or the lower thrust rod right bracket) before and after stamping in the present embodiment.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

examples: referring to fig. 1-2, a combined punching die comprises an upper die holder 1, a lower die holder 2 and two side punching mechanisms 3.

Referring to fig. 1, the two side punching mechanisms 3 are disposed between the upper die holder 1 and the lower die holder 2 and are symmetrically distributed.

Referring to fig. 3-6, an upper profiling module 1-1 is fixedly arranged on the upper die holder 1, and a vertical punch 1-2 is fixedly arranged on the upper profiling module 1-1;

referring to fig. 4-6, the upper profiling module 1-1 is in a 'concave' shape; two flat punch bit avoiding grooves 1-11 are respectively formed in two side parts of the upper profiling module 1-1.

7-8, a lower profiling module 2-1 is arranged in the middle of the lower die holder 2, and the lower profiling module 2-1 is in a convex shape; three limiting blocks 5 for limiting the three directions of the workpiece respectively are fixedly arranged on the lower profiling module 2-1, and the three limiting blocks 5 are distributed in a triangular mode (see fig. 10-12).

Referring to fig. 9-12, before stamping, a workpiece N (such as a left bracket of a lower thrust rod or a right bracket of a lower thrust rod, which belongs to a steam fitting) is placed on a lower profiling module 2-1, the workpiece N is covered on the lower profiling module 2-1 and is in a shape like a Chinese character 'ji' and stably supported, three limiting blocks 5 respectively limit the left and right wing plate parts and the top plate part of the workpiece N at three places, and the workpiece N is precisely positioned and cannot move at will so as to be stamped; the workpiece is accurately positioned and cannot move at will, so that the workpiece cannot move, and the position of the hole is ensured to be very accurate after stamping.

See fig. 7-11, wherein the side punching mechanism 3 comprises a driving block 3-1, a driven block 3-2, a sliding seat 3-3, a return spring 3-4 and a flat punch 3-5.

Specifically, the upper end of the driving block 3-1 is fixedly connected with the upper die holder 1 (see fig. 1); the lower end of the sliding seat 3-3 is fixedly connected with the lower die holder 2 (see fig. 1).

Referring to fig. 13-14, specifically, the driven block 3-2 is in horizontal sliding fit with the sliding seat 3-3 (i.e. can slide relatively in the horizontal direction); the slide seat 3-3 is provided with a horizontal chute 3-31, the lower part of the driven block 3-2 is in sliding fit with the horizontal chute 3-31, and the driven block 3-2 and the slide seat 3-3 can slide relatively in the horizontal direction so as to ensure that side holes are punched horizontally and accurately.

Referring to fig. 13-14, specifically, a first inclined plane 3-11 is provided at the lower end of the driving block 3-1, and a second inclined plane 3-21 for matching with the first inclined plane 3-11 is provided on the driven block 3-2. The first inclined surface 3-11 contacts with the second inclined surface 3-21 of the driven block 3-2 when the driving block 3-1 descends and pushes the driven block 3-2 to horizontally press and feed on the slide base 3-3 for sliding.

In particular, with reference to fig. 13-14, the flat punch 3-5 is fixedly disposed on the driven block 3-2 at an end facing away from the second inclined surface 3-21.

In connection with fig. 13-14, in particular, the return spring 3-4 is arranged between the follower block 3-2 and the slide 3-3. The driven block 3-2 compresses and stores energy of the reset spring 3-4 during punching feeding, the driving block 3-1 moves upwards to lose acting force on the driven block 3-2 during tool withdrawal, and at the moment, the reset spring 3-4 can be released to stretch to push the driven block 3-2 to slide horizontally away from a workpiece, so that the purposes of automatic tool withdrawal and reset are achieved.

Preferably, the return spring 3-4 is a nitrogen spring (the specific structure thereof can be in the prior art, and the assembly can be directly purchased according to the required size and parameter requirements, so that the description is omitted) or a compression spring.

Referring to fig. 13-14, specifically, the driven block 3-2 is provided with a downward extending portion 3-11 at the lower end of the first inclined surface 3-11, the driven block 3-2 is provided with a sink groove 3-32 corresponding to the downward extending portion 3-11, the return spring 3-4 is installed in the sink groove 3-32, one end of the return spring 3-4 is abutted against or fixedly connected with the side wall of the sink groove 3-32, and the other end of the return spring 3-4 is abutted against or fixedly connected with the downward extending portion 3-11. The return spring 3-4 can be pressed and compressed by the lower extension part 3-11 of the driven block 3-2 during punching feeding, and the return spring 3-4 can push the driven block 3-2 to move away from the workpiece to realize tool withdrawal and return during tool withdrawal.

Wherein, the lower profiling module 2-1 is provided with a vertical punch bit avoidance hole 2-11 and left and right two flat punch bit avoidance holes 2-12 (four flat punch bit avoidance holes 2-12 in total). The flat punch 3-5 is normally punched by passing horizontally when punching horizontally.

Referring to fig. 11, two flat punches 3-5 are fixedly arranged on the driven block 3-2. Since the present work has two side mounting holes N-2 (see fig. 18) on the left or right side, two flat punches 3-5 are disposed on each of the two side punching mechanisms 3, so that four side mounting holes N-2 on the left and right sides can be simultaneously processed.

Referring to fig. 13, further, the flat punch 3-5 is detachably and fixedly connected with the driven block 3-2. The flat punch 3-5 is replaceable when worn.

Referring to fig. 17, further, a blanking hole 2-13 is arranged in the lower profiling module 2-1; the blanking hole 2-13 is communicated with the vertical punch clearance hole 2-11 and the flat punch clearance hole 2-12; a drawer 6 is connected in a sliding manner in the lower die holder 2; the drawer 6 is able to collect the waste material falling from the blanking holes 2-13 (see fig. 11-12).

When the stamping machine works, a workpiece N is firstly covered on the lower profiling module 2-1 and is in a shape like a Chinese character 'ji' and stably supported, three limit blocks 5 respectively limit wing plate parts and top plate parts at the left side and the right side of the workpiece N, and the workpiece N is accurately positioned and cannot move at will so as to be stamped and machined; the press die works, the upper die holder 1 moves downwards, and the lower die holder 2 is fixed. In the descending process of the upper die holder 1, a vertical punch 1-2 on the upper die holder 1 punches a top mounting hole N-1 on the top surface of a workpiece, and finally the upper profiling module 1-1 is completely pressed on the workpiece. At the same time, the driving block 3-1 of the side punching mechanism 3 descends along with the upper die holder 1, and after the first inclined surface 3-11 of the driving block 3-1 contacts with the second inclined surface 3-21 of the driven block 3-2, the driven block 3-2 (the sliding seat 3-3 is stationary) is continuously pushed to slide horizontally towards the workpiece, so that two side mounting holes N-2 on the corresponding sides (left side or right side) are punched, and at the moment, the reset spring is compressed. And because the two side punching mechanisms 3 are bilaterally symmetrical and have the same working principle, the driven blocks 3-2 of the two side punching mechanisms 3 move relatively symmetrically, so that the four side mounting holes N-2 on the left side and the right side are punched simultaneously.

In the stamping process, the four flat punches 3-5 on the left and right sides respectively pass through the four flat punch clearance grooves 1-11 on the upper profiling module 1-1 to avoid positions.

And the vertical punch 1-2 is continuously inserted into the vertical punch avoidance hole 2-11 of the lower profiling module 2-1 downwards after punching the top mounting hole N-1 on the workpiece, so that scraps enter the vertical punch avoidance hole 2-11 and then fall into the drawer 6 from the blanking hole 2-13 to be collected.

And the four flat punches 3-5 (left and right two respectively) punch the four top mounting holes N-1 (left and right two respectively) on the workpiece and then are continuously inserted downwards into the four flat punch position avoiding holes 2-12 of the lower profiling module 2-1, so that waste materials enter the four flat punch position avoiding holes 2-12 and then fall into the drawer 6 from the blanking holes 2-13 to be collected. The drawer which can be horizontally pulled out in the lateral direction is slidably arranged in the lower die holder, and can collect waste materials which fall down in the stamping mode at three parts on a workpiece, so that the waste materials can be conveniently taken out in the lateral direction, and the device is very convenient.

Therefore, the utility model is used for processing the top mounting hole and the side mounting holes on the left side and the right side of a workpiece (such as a lower thrust rod left bracket or a lower thrust rod right bracket) at one time, has concentrated working procedures, can improve the production efficiency by times, reduces the number of processing working procedures, dies and workers, can reduce the production cost and the energy consumption, and can ensure the position precision of each hole site.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (7)

1. A combined punching die is characterized in that: comprises an upper die holder (1), a lower die holder (2) and two side punching mechanisms (3); the two side punching mechanisms (3) are symmetrically distributed left and right;

an upper profiling module (1-1) is arranged on the upper die holder (1), and a vertical punch (1-2) is arranged on the upper profiling module (1-1);

the lower die holder (2) is provided with a lower profiling module (2-1);

the side punching mechanism (3) comprises a driving block (3-1), a driven block (3-2), a sliding seat (3-3), a reset spring (3-4) and a flat punch (3-5); the driving block (3-1) is fixedly connected with the upper die holder (1); the sliding seat (3-3) is fixedly connected with the lower die holder (2); the driven block (3-2) is horizontally matched with the sliding seat (3-3) in a sliding manner; the lower end of the driving block (3-1) is provided with a first inclined plane (3-11), and the driven block (3-2) is provided with a second inclined plane (3-21) matched with the first inclined plane (3-11); the reset spring (3-4) is arranged between the driven block (3-2) and the sliding seat (3-3), and the Ping Chongtou (3-5) is fixed on the driven block (3-2);

the lower profiling module (2-1) is provided with a vertical punch clearance hole (2-11) and a flat punch clearance hole (2-12).

2. A combination punch die as claimed in claim 1, wherein: two flat punches (3-5) are arranged on the driven block (3-2).

3. A combination punch as claimed in claim 1 or claim 2, wherein: the Ping Chongtou (3-5) is detachably and fixedly connected with the driven block (3-2).

4. A combination punch die as claimed in claim 1, wherein: three limiting blocks (5) used for limiting three directions of the workpiece respectively are arranged on the lower profiling module (2-1), and the three limiting blocks (5) are distributed in a triangular mode.

5. A combination punch die as claimed in claim 1, wherein: the upper profiling module (1-1) is concave; flat punch bit avoiding grooves (1-11) are formed in two side parts of the upper profiling module (1-1);

the lower profiling module (2-1) is in a convex shape.

6. A combination punch die as claimed in claim 1, wherein: a blanking hole (2-13) is formed in the lower profiling module (2-1); the blanking hole (2-13) is communicated with the vertical punch clearance hole (2-11) and the horizontal punch clearance hole (2-12);

a drawer (6) is connected in a sliding manner in the lower die holder (2); the drawer (6) can collect the waste materials falling from the blanking holes (2-13).

7. A combination punch die as claimed in claim 1, wherein: the return spring (3-4) adopts a nitrogen spring or a compression spring.