CN209109932U - A die structure for fixed-length punching - Google Patents

Abstract

The utility model discloses a die structure for fixed-length punching of upper bars, which comprises a lower die base and an upper die base, wherein the lower die base is arranged with a profiling placing block and a side pressing block, and the lower end surface of the upper die base is arranged with a The upper cutting knife and the punching block that drives the side pressing block to be close to or away from the profiling placing block, the lower cutting knife is arranged on the profiling placing block, and a side preventing block is respectively arranged on the front side of the profiling placing block and the side pressing block, A passage for the upper cutter to pass through is formed between the two anti-side blocks, and the lower end of the upper cutter is provided with a first oblique knife edge, a second oblique knife edge and a third oblique knife edge. The utility model adopts the punching method, the sound of the punching die is very small, and the problem of large sawing noise is solved; no iron scraps are generated, which solves the problem of sawing iron scraps, which are easy to remain and cause abnormality of the door; the rhythm can reach 200PCS/H, and the rhythm Huge improvements.

Description

A die structure for fixed-length punching

technical field

The utility model relates to a mold structure in the research field of auto parts production, in particular to a mold structure for die-cutting with fixed lengths.

Background technique

The front door and window frame of a car is generally composed of four parts: A-pillar sub-assembly, B-pillar sub-assembly, reinforcing plate, and winding; the front door winding is obtained by rolling and bending to obtain semi-finished products, and then punching and sawing. The end is finished, and finally it is welded with the B-pillar and C-pillar of the rear door.

The existing production methods are as follows:

1) The upper strip of the front door is close to the A-pillar side, called the A-pillar end, and close to the B-pillar side, called the B-pillar end;

2) The winding strip is rolled out to be a straight strip, and the length is the length of the winding strip on the left front door + the length of the winding strip on the right front door + the reserved amount;

3) Put the semi-finished product of the straight strip on the bending die. The A-pillar ends of the left and right front door winders will be clamped by the left and right end clamps of the bending die, which will cause serious deformation; After coming out, the middle of the last winder will be cut off and divided into left and right front door winders. Since the winder has pockets, the B-pillar ends of the left and right front door winders will be punched and deformed after cutting;

4) It can be seen from the product section that the conventional punching and cutting head will be severely deformed, and the A and B column ends of the left and right front door upper strips need to be sawed to cut off the excess deformation positions at both ends;

5) The end of the B-pillar on the front door and the B-pillar are spliced and welded at the back angle, so the end of the B-pillar end is beveled after sawing, and the angle accuracy is very high; the end of the A-pillar on the front door only needs to ensure that the line profile is within the tolerance range Inside, the ends are also flat.

The existing production methods have the following disadvantages:

1) The noise of sawing is very loud, which can easily lead to employee injury;

2) The sawing station needs to invest in a sawing machine, a sawing jig, and a saw blade, among which the saw blade is a consumable item, and the cost is high;

3) Iron filings are produced by sawing, which are easy to remain in the upper pocket, and are prone to abnormal noise;

4) The rhythm of sawing is low, and the rhythm of sawing is 80PCS/H.

Utility model content

The purpose of the present utility model is to provide a die structure for die-cutting with fixed-length windings, which can replace the original sawing by punching and reduce the noise of the working environment.

The solution of the utility model to solve the technical problem is as follows: a die structure for fixed-length punching of upper strips, comprising a lower die base and an upper die base, wherein the lower die base is arranged with a profiling placing block and a side pressing block, and the upper die base is The lower end face of the die base is arranged with an upper cutter and a punching block that drives the side pressing block to be close to or away from the profiling placing block, the profiling placing block is arranged with a lower cutting knife, the front sides of the profiling placing block and the side pressing block are respectively A side preventing block is arranged, a passage for the upper cutter to pass through is formed between the two side preventing blocks, and the lower end of the upper cutter is arranged with a first oblique knife edge, a second oblique knife edge and a third oblique knife edge.

As a further improvement of the above technical solution, the first oblique knife edge is located above the lower cutter, and the second oblique knife edge and the third oblique knife edge are located on the side of the upper knife close to the side pressure block.

As a further improvement of the above technical solution, a first profiling placing cavity and a second profiling placing cavity located below the first profiling placing cavity are arranged on the profiling placing block, the first profiling placing cavity and the second profiling placing cavity One end of the placement cavity close to the side pressure block is open, and the lower cutter is arranged on the side wall of the first profile placement cavity away from the side pressure block.

As a further improvement of the above technical solution, the junction of the first oblique knife edge and the second oblique knife edge is close to the anti-side block, and the junction of the second oblique knife edge and the third oblique knife edge is far away from the anti-side block.

As a further improvement of the above technical solution, a sliding block is arranged between the side pressure block and the lower die base, the side pressure block is fixed on the sliding block, and a guide block is respectively arranged on both sides of the sliding block. A guide tooth structure is arranged between the guide blocks.

As a further improvement of the above technical solution, a backstop block is also included, and the backstop block is arranged on the outer side of one end of the side pressing block that is far away from the profiling placing block.

As a further improvement of the above technical solution, a first connection block is installed on the lower die base, a second connection block is arranged on the first connection block, a positioning block is installed on the second connection block, and the second connection block is installed on the second connection block. The block and the first connection block are arranged in an L shape.

The beneficial effects of the utility model are: the utility model arranges the first oblique knife edge, the second oblique knife edge and the third oblique knife edge at the lower end of the upper cutter, and after placing one end of the workpiece in the copying placing block, the upper die seat Down, the block drives the side pressure block close to the copying block and then presses the workpiece. The first oblique knife edge and the lower knife trim the pocket edge on the left side of the workpiece, and then pass the second oblique knife edge and the upper end of the side pressure block. The right pocket edge of the workpiece is trimmed, and finally the reinforcing rib in the workpiece is punched through the second oblique knife edge and the third oblique knife edge. The utility model adopts the punching method, the sound of the punching die is very small, and the problem of large sawing noise is solved; no iron filings are produced, which solves the problem of sawing iron filings, which are easy to remain and lead to abnormality of the door; Huge improvements.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly describes the accompanying drawings that are used in the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, but not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings according to these drawings without creative work.

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the state schematic diagram one of punching of the present utility model;

Fig. 3 is the state schematic diagram two of punching of the present utility model;

FIG. 4 is a schematic diagram 3 of the punching state of the present utility model.

Detailed ways

The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, those skilled in the art can obtain other embodiments without creative work, All belong to the scope of protection of the present invention. In addition, all the coupling/connection relationships mentioned in the text do not mean that the components are directly connected, but refer to a better coupling structure by adding or reducing coupling accessories according to specific implementation conditions.

Referring to FIGS. 1 to 4 , a die structure for die-cutting of upper strips to a fixed length includes a lower die base 1 and an upper die base 13 . The lower end face of the seat 13 is arranged with an upper cutter and a punching block 8 that drives the side pressing block 7 to be close to or away from the profiling placing block, on which the lower cutting knife 3, the profiling placing block and the side pressing block 7 are arranged. A piece of anti-side block 2 is arranged on the front side of the machine, and a channel for the passage of the upper cutter is formed between the two anti-side blocks 2. The lower end of the upper cutter is arranged with a first oblique knife edge 4, a second oblique knife edge 5 and The third oblique knife edge 6 . The upper cutter is mounted on the upper die holder 13 through the cutter holder 14 . The deformation of pocket-shaped products cut by a conventional cutter will be very serious. In order to solve the deformation problem, the top surface of the pocket is punctured, and the top surface area is small. The puncture deformation can be controlled in a small range, and the facade is obliquely cut, which can be very In order to solve the problem of punching deformation, a first oblique knife edge 4, a second oblique knife edge 5 and a third oblique knife edge 6 are arranged at the lower end of the upper cutter.

The side pressure block 7 has three main functions: a. The side pressure block 7 and the slider are a whole. After the block 8 is knocked down, the side pressure block 7 is directly driven to move to the left, and the guide teeth provide guidance; b. function, the product is pressed and pressed; c. The function of the cutter, the upper end face of the side pressing block 7 and the upper end face of the lower cutter 3 are flush and are knife edge materials.

By arranging the first oblique knife edge 4, the second oblique knife edge 5 and the third oblique knife edge 6 at the lower end of the upper cutter, after placing one end of the workpiece into the copying placing block, the upper die seat 13 goes down, and the punching block 8 drives the side After the pressing block 7 is close to the profiling block, the workpiece is pressed. The first oblique knife edge 4 and the lower knife 3 trim the pocket edge on the left side of the workpiece, and then pass the second oblique knife edge 5 and the upper end of the side pressing block 7 to the workpiece. The right side of the pocket is trimmed, and the left and right sides of the pocket have forces to the left and right during the punching process. Press the left side of the pocket on the lower cutter 3, and press the right side of the pocket on the side pressing plate. On the left and right sides of the pocket, the left and right sides of the pocket will not move downward, so as to control the deformation of the punching process. Finally, the reinforcement ribs in the workpiece are punched through the second oblique knife edge 5 and the third oblique knife edge 6. First, the cutting edge force will be reached. The smallest, the least resistance; the second is to ensure the least amount of punching and the least resistance during the trimming process; the third is that the two oblique knives are punched at the same time to ensure that the product is evenly stressed.

The pressure on the side edge of the upper cutter during the punching process is relatively large, and the lateral force must be offset. Otherwise, after a long time of punching, the upper cutter will be pulled, displaced, and punching deformation occurs. Means to solve the lateral force: 1) The cutter fixing seat 14 can properly offset the lateral force; 2) Before punching the upper cutter, the left and right sides of the upper cutter have entered the anti-side block 25mm, which can effectively offset the punching Lateral force in the process.

As a further preferred embodiment, the first oblique knife edge 4 is located above the lower cutting knife 3 , and the second oblique knife edge 5 and the third oblique knife edge 6 are located on the side of the upper cutting knife close to the side pressure block 7 .

Further as a preferred embodiment, a first profiling placing cavity and a second profiling placing cavity located below the first profiling placing cavity are arranged on the profiling placing block, the first profiling placing cavity and the second profiling placing cavity One end of the cavity close to the side pressing block 7 is open, and the lower cutter 3 is arranged on the side wall far from the side pressing block 7 in the first profiling placement cavity.

Further as a preferred embodiment, the junction of the first oblique knife edge 4 and the second oblique knife edge 5 is close to the anti-side block 2, and the junction of the second oblique knife edge 5 and the third oblique knife edge 6 is far away from the anti-side block 2. .

Further as a preferred embodiment, a sliding block is arranged between the side pressing block 7 and the lower die base 1, the side pressing block 7 is fixed on the sliding block, and a guide block is respectively arranged on both sides of the sliding block, and the sliding block is arranged on both sides of the sliding block. A guide tooth structure is arranged between the block and the guide block to improve the smoothness of the horizontal movement of the slider and the side pressure block 7 .

Further as a preferred embodiment, it also includes a backstop block 9, and the backstop block 9 is arranged on the outer side of one end of the side pressing block 7 away from the contoured placing block. Of course, a return spring is also installed between the side pressing block 7 and the backstop block 9 to ensure that after the punching block 8 is reset, the side pressing block 7 is also reset, so as to make room for placing the workpiece.

Further as a preferred embodiment, a first connection block 11 is installed on the lower die base 1 , a second connection block 12 is arranged on the first connection block 11 , and a positioning block is installed on the second connection block 12 10. The second connecting block 12 and the first connecting block 11 are arranged in an L shape. A positioning pin is also installed on the positioning block 10 .

The following are embodiments of the present utility model when working:

1. Put one end of the workpiece into the copy placement block, and the other end of the workpiece is positioned by the positioning pin on the positioning block 10;

2. Start the punching machine, the upper die base 13 moves downward, the upper cutter begins to enter the anti-side block 2, and at the same time, the punching block 8 drives the side pressing block 7 to move to the left until it is pressed and pressed against the workpiece;

3. When the upper cutter enters the anti-side block 2 and the anti-side block 2 is in place, the upper die base 13 moves downward again, and the first oblique edge 4 of the upper cutter starts to pierce and punch the top surface of the pocket;

4. When the top surface of the punching and punching is completed, the left and right sides of the pocket are beveled. The first beveled edge 4 and the lower incision are trimmed on the left side of the pocket; the second beveled edge 5 and the edge of the side pressing plate Side pockets are trimmed;

5. When the pocket punching is completed, the upper die base 13 continues to move downward, and the second oblique knife edge 5, the third oblique knife edge 6 and the lower knife 3 will punch the upper double-layer material part;

6. After the punching of the upper double-layer material part is completed, the mold moves to the bottom dead center, and then the upper mold base 13 starts to move upward until it reaches the top dead center, and the side pressure block 7 is reset under the action of the reset spring, take out Workpiece, complete a punching.

The preferred embodiments of the present utility model have been described above in detail, but the invention is not limited to the embodiments, and those skilled in the art can also make various equivalent modifications without departing from the spirit of the present utility model. Or alternatives, these equivalent modifications or alternatives are included within the scope defined by the claims of the present application.

Claims (7)

1. A die structure for fixed-length punching of an upper strip, characterized in that: comprising a lower die base and an upper die base, the lower die base is arranged with a copying placing block and a side pressing block, and the lower end face of the upper die base is arranged There is an upper cutter and a punching block that drives the side pressing block to be close to or away from the profiling placing block, the profiling placing block is arranged with a lower cutting knife, and an anti-side block is arranged on the front side of the profiling placing block and the side pressing block respectively. A channel for the upper cutter to pass through is formed between the two anti-side blocks, and the lower end of the upper cutter is arranged with a first oblique knife edge, a second oblique knife edge and a third oblique knife edge. 2. The die structure for fixed-length punching of upper strips according to claim 1, characterized in that: the first oblique knife edge is located above the lower knife, and the second oblique knife edge and the third oblique knife edge are located in the upper knife Close to the side of the side clamp. 3. The die structure for die-cutting of upper strips according to claim 1, characterized in that: a first profiling placement cavity and a second profiling placement cavity below the first profiling placement cavity are arranged on the profiling placing block. One end of the first and second profiling cavities close to the side pressure block is open, and the lower cutter is arranged on the side wall of the first profiling placing cavity away from the side pressure block. 4. The die structure for fixed-length punching of the upper strip according to claim 1, characterized in that: the junction of the first oblique knife edge and the second oblique knife edge is close to the anti-side block, and the second oblique knife edge and the first oblique knife edge are close to the side preventing block. The junction of the three beveled edges is far from the anti-side block. 5. The die structure for upper strip fixed-length punching according to claim 1, wherein a slider is arranged between the side pressure block and the lower die base, the side pressure block is fixed on the slider, and the slider A guide block is arranged on both sides of the slider, and a guide tooth structure is arranged between the slider and the guide block. 6. The die structure for fixed-length punching of the upper strip according to claim 1 or 5, characterized in that: it further comprises a backstop block, and the backstop block is arranged on the outer side of one end of the side pressing block that is far away from the profiling placing block . 7 . The die structure for upper strip fixed-length punching according to claim 1 , wherein a first connecting block is installed on the lower die base, and a second connecting block is arranged on the first connecting block, 8 . A positioning block is installed on the second connecting block, and the second connecting block and the first connecting block are arranged in an L shape.