Fixing structure of upper die punching male die

Abstract

The utility model relates to the technical field of stamping metal processing, in particular to a fixing structure of an upper die punching male die. According to the fixing structure of the upper die punching male die, in the rising process of punching equipment, the male die is fixed through a bolt, a transverse pin is stressed together, the deformation breaking strength of the transverse pin is far larger than the strength generated after punching of the male die and friction generated between a punching sheet and the upper die male die, it is guaranteed that the male die and the punching sheet are normally separated, and breakage is avoided; and normal production is ensured. Compared with the prior art, after high-strength punching of the die, in the ascending process of an upper die of stamping equipment, the male die is fixed through the bolt, the transverse pin assists in stress, and the bolt and the transverse pin are stressed together, so that it is guaranteed that the male die bolt has high enough stress strength, the male die cannot fall off due to damage, normal separation of the male die and a punching sheet is guaranteed, and the production efficiency is improved. And normal production is ensured.

Description

Technical Field

[0001] This utility model relates to the field of stamping metal processing technology, specifically a fixing structure for an upper die punching punch. Background Technology

[0002] Punching is a common metal processing technology involving stamping. During punching, die blocks are used to cut the middle part of the workpiece to achieve the required shape and dimensional accuracy. To complete the punching process, a set of cutting mechanisms is required, which consists of a punching punch assembly and a punching die. The common structure usually uses the movement direction between the upper and lower dies to achieve the punching of the part. The upper die punching punch assembly is generally fixed by bolts, consisting of a positioning base plate and a fixing plate from bottom to top. The bolt diameter is usually m8~m10. Normally, there are no problems with punching. However, when punching high-strength sheet metal such as automotive rocker arms, the connecting bolts often break during production. The upper die punching punch is carried down by the sheet metal. If technicians do not detect this in time, or if it is on an automated production line, the punch will be punched to the next stage of extrusion along with the sheet metal, which will cause damage to the die. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides a fixing structure for the upper die punching punch. During the upward process of the stamping equipment, in addition to being fixed by bolts, the punch is also subjected to force by a horizontal pin. The deformation and fracture strength of the horizontal pin is much greater than the strength generated after the punch is punched. The friction generated between the punch and the upper die punch ensures that the punch and punch are separated normally and will not break, thus ensuring normal production.

[0004] To achieve the above objectives, a fixing structure for an upper die punching punch is designed, including a fixing plate, a positioning base plate is provided below the fixing plate, a positioning plate groove is provided on the surface of the positioning base plate, a punching punch is inserted through the positioning base plate, and a transverse pin is inserted through the punching punch laterally.

[0005] The fixing plate is provided with bolt fixing holes, and there are two bolt fixing holes in total.

[0006] The punching punch is provided with a punch threaded hole on its upper part. The punch threaded hole and the bolt fixing hole can cooperate to realize the threaded connection between the punching punch and the fixing plate.

[0007] The punching punch has a punch transverse hole on one side for the transverse pin to pass through.

[0008] There are two horizontal pins and four grooves in the positioning plate. The horizontal pins cooperate with the grooves in the positioning plate.

[0009] Compared with the prior art, this utility model, after the high-strength punching of the mold, during the rising process of the die on the stamping equipment, in addition to the bolt fixing, the punch also has a cross pin for auxiliary force. The bolt and the cross pin are combined to bear the force, thereby ensuring that the punch bolt has sufficient strength to prevent damage and the punch from falling off, ensuring that the punch and the punch sheet are separated normally, and ensuring normal production. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the punch structure of this utility model.

[0011] Figure 2 This is an exploded view of the present invention.

[0012] See Figure 1 and Figure 2 101 is a fixing plate, 102 is a bolt fixing hole, 201 is a positioning base plate, 202 is a positioning plate groove, 3 is a punching punch, 301 is a punch horizontal hole, 302 is a punch threaded hole, and 4 is a horizontal pin. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figure 1 As shown, a positioning base plate 201 is provided below the fixing plate 101. A positioning plate groove 202 is provided on the surface of the positioning base plate 201. A punching punch 3 is provided in the positioning base plate 201. A transverse pin 4 is passed through the punching punch 3 laterally.

[0015] The fixing plate 101 is provided with bolt fixing holes 102. There are two bolt fixing holes 102. The punching punch 3 is provided with a punch thread hole 302 above it. The bolt is screwed into the punch thread hole 302 from above the bolt fixing hole 102. Tightening the bolt can fix the punching punch 3 to the fixing plate 101.

[0016] The punching punch 3 has a punch transverse hole 301 on one side for the transverse pin 4 to pass through.

[0017] There are two horizontal pins 4 and four grooves in the positioning plate groove 202. The horizontal pins 4 cooperate with the positioning plate groove 202. The horizontal pins 4 are inserted into the punching punch 3 through the punch horizontal hole 301 on the side of the punching punch 3. The horizontal pins 4 are snapped into the positioning base plate 201, which can fix the punching punch 3.

[0018] This invention features a punch horizontal hole 301 on the side of the original punching punch. The punching punch 3 is pushed into the through hole inside the positioning base plate 201, and the horizontal pin 4 is inserted into the punch horizontal hole 301. The horizontal pin 4 is then secured in the positioning plate groove 202. The bolt fixing hole 102 and the punch thread hole 302 are aligned, and the bolt is inserted and tightened to fix the fixing plate 101 to the punching punch 3. After the die has finished punching, the stamping equipment rises, and the fixing plate 101 drives the punching punch 3 to rise. At this time, in addition to the bolt connecting the fixing plate 101 and the punching punch 3, the horizontal pin 4 is fixed in the positioning plate groove 202. The horizontal pin 4 is also subjected to a downward force, which helps to share the weight of the bolt, so that the upper die punching punch 3 will no longer be pulled down due to bolt breakage. This invention is simple and effective, and can effectively solve the problem of insufficient bolt strength for punch fixing.

Claims

1. A fixing structure for an upper die punching punch, comprising a fixing plate, characterized in that: The fixed plate (101) is provided with a positioning base plate (201) below it. The positioning base plate (201) has a positioning plate groove (202) on its surface. A punching punch (3) is provided in the positioning base plate (201), and a transverse pin (4) is provided in the punching punch (3).

2. The fixing structure of the upper die punching punch according to claim 1, characterized in that: The fixing plate (101) is provided with bolt fixing holes (102), and there are two bolt fixing holes (102).

3. The fixing structure of the upper die punching punch according to claim 1, characterized in that: The punching punch (3) is provided with a punch thread hole (302) on the top. The punch thread hole (302) and the bolt fixing hole (102) can cooperate to realize the threaded connection between the punching punch (3) and the fixing plate (101).

4. The fixing structure of the upper die punching punch according to claim 1, characterized in that: The punching punch (3) has a punch transverse hole (301) on one side for the transverse pin (4) to pass through.

5. The fixing structure of the upper die punching punch according to claim 1, characterized in that: There are two horizontal pins (4) and four grooves in the positioning plate groove (202). The horizontal pins (4) cooperate with the positioning plate groove (202).

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