Hardware trimming die structure

Abstract

The utility model provides a hardware trimming die structure. The hardware trimming die structure comprises an upper die top plate, an installation plate fixedly installed on the bottom face of the upper die top plate, a punching cutter fixedly installed below the installation plate, a material returning plate installed below the installation plate in an elastic lifting mode and a plurality of punching needles fixedly installed on the installation plate. A punching cavity is defined by the punching cutters, the material returning plate penetrates through the punching cavity in a manner that the outline of the material returning plate is matched, and the punching needles penetrate through the material returning plate; and each punching needle is mounted on the mounting plate from the lower part through an embedding block. When the punching needle is replaced, only the material returning plate needs to be detached firstly, then the embedding block is taken out of the mounting plate, and then the punching needle is taken out of the embedding block for replacement, compared with the prior art, the punching cutter, the material returning plate and the whole mounting plate do not need to be detached, operation is simple, one person can simply complete operation, meanwhile, time consumed for replacing the punching needle is shortened, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing equipment, in particular to a hardware trimming die structure. Background Art

[0002] For the die-cast hardware parts, flash usually appears at the mold clamping line of the product corresponding to the forming mold, the edge of the hole, etc., and needs to be further processed and removed. Usually, the method adopted is to punch and cut the flash at the edge and hole edge of the hardware parts through a trimming die.

[0003] Among them, the cutter for punching the edge of the hardware part is a cutting tool, and the punch for punching the edge of the hole is a punch pin. The force-bearing area of the punch pin is small and it is easy to be damaged and often needs to be replaced. However, in the existing structure of such trimming dies, the punch pin has a T-head and is inserted into the mounting plate of the die from top to bottom, while the structures such as the cutting tool and the stripper plate are installed below the mounting plate. Therefore, when replacing the punch pin, it is necessary to remove the cutting tool, the stripper plate, and the mounting plate as a whole to take out the punch pin for replacement, which makes the replacement operation of the punch pin difficult and affects the production efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hardware trimming die structure that is easy to replace the punch pin.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A hardware trimming die structure includes an upper die top plate, a mounting plate fixedly installed on the bottom surface of the upper die top plate, a cutting tool fixedly installed below the mounting plate, a stripper plate elastically lifted and installed below the mounting plate, and a plurality of punch pins fixedly installed on the mounting plate; the cutting tool encloses a punching cavity, the contour of the stripper plate penetrates through the punching cavity in a matching manner, and each punch pin penetrates through the stripper plate; each punch pin is installed on the mounting plate from below through an inlay block.

[0007] A preferred scheme is that the mounting plate has an inlay hole for inserting the inlay block from the bottom surface. The inlay block is arranged in the inlay hole and is locked to the upper die top plate from the bottom surface upward through a first screw.

[0008] A preferred scheme is that the top of the inlay block has a sunken table surface lower than the top surface and a vertical through hole corresponding to the sunken table surface. The top end of the punch pin has a T-head, and the punch pin penetrates through the inlay block from top to bottom, and the top surface of the T-head abuts against the bottom surface of the upper die top plate.

[0009] A preferred scheme is that the stripper plate is locked and installed on an elastic device from the bottom surface upward.

[0010] In a preferred embodiment, the punching knife is integrally in the shape of a plate, and the back surface of the punching knife is fixed to the mounting plate by a plurality of separating columns.

[0011] In a preferred embodiment, multiple groups of the punching knives are arranged in parallel on the upper die top plate, and the stripping plates are respectively arranged in one-to-one correspondence.

[0012] The beneficial effect of the present utility model is that when replacing the punching needle, only the stripping plate needs to be removed first, then the inlay block is taken out from the mounting plate, and then the punching needle is taken out from the inlay block for replacement. Compared with the prior art, there is no need to remove the punching knife, the stripping plate, and the entire mounting plate. The operation is simple and can be easily completed by one person. At the same time, the time consumed for replacing the punching needle is also reduced, and the production efficiency is improved. Brief Description of the Drawings

[0013] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0014] Figure 1 It is a schematic installation structure diagram of the trimming die in the embodiment;

[0015] Figure 2 It is a schematic cross-sectional view of the installation structure of the side die in the embodiment;

[0016] Figure 3 It is a schematic installation structure diagram of the inlay block and the punching needle in the embodiment. Detailed Embodiment

[0017] The present utility model will be further described below with reference to the drawings:

[0018] It should be noted that the words indicating directions in this application document, such as the top surface, the bottom surface, the vertical direction, etc., are only for the convenience of more intuitively describing the structure in combination with the drawings, and do not limit the product structure.

[0019] Referring to Figures 1 to 3 As shown, a trimming die structure for a hardware part includes an upper die top plate 1, a mounting plate 2 fixedly installed on the bottom surface of the upper die top plate 1, a punching knife 3 fixedly installed below the mounting plate 2, a stripping plate 4 elastically lifted and installed below the mounting plate 2, and a plurality of punching needles 5 fixedly installed on the mounting plate 2; the punching knives 3 enclose a punching cavity, the contour of the stripping plate 4 penetrates through the punching cavity in a matching manner, and each punching needle 5 penetrates through the stripping plate 4; each punching needle 5 is installed on the mounting plate 2 from below through an inlay block 6

[0020] When replacing the punch pin 5, only the stripper plate 4 needs to be removed first, then the insert block 6 is taken out from the mounting plate 2, and then the punch pin 5 is taken out from the insert block 6 for replacement. Compared with the prior art, there is no need to remove the punching die 3, the stripper plate 4, and the entire mounting plate 2. The operation is simple and can be easily completed by one person. At the same time, the time consumed for replacing the punch pin 5 is also reduced, improving the production efficiency.

[0021] In a preferred solution, the mounting plate 2 of this embodiment has a mounting hole 21 for inserting the insert block 6 from the bottom surface. The insert block 6 is disposed in the mounting hole 21 and is locked to the upper die top plate 1 from the bottom surface upward by a first screw. When disassembling, the first screw is taken out from below, and the whole formed by the insert block 6 and the punch pin 5 can be taken out downward, and then the punch pin 5 can be taken out from the insert block 6 separately, which is convenient for disassembly and assembly.

[0022] In a preferred solution, the top of the insert block 6 of this embodiment has a counterbore surface 61 lower than the top surface, and a vertical through hole 62 corresponding to the counterbore surface 61. The top end of the punch pin 5 has a T-head 51, and the punch pin 5 penetrates the insert block 6 from the top downward, and the top surface of the T-head 51 abuts against the bottom surface of the upper die top plate 1. The sinking distance of the counterbore surface 61 just accommodates the T-head 51, so that after installation, the T-head 51 of the punch pin 5 directly abuts against the upper die top plate 1 without additional fixation, and the installation and disassembly are simple.

[0023] In a preferred solution, the stripper plate 4 of this embodiment is locked and installed on an elastic device from the bottom surface upward. The elastic device usually includes a spring, and the stripper plate 4 is locked from the bottom surface upward and can be directly removed from the bottom during disassembly.

[0024] In a preferred solution, the punching die 3 of this embodiment is integrally in a plate shape, and the back surface of the punching die 3 is fixed to the mounting plate 2 by a plurality of spacer columns 7. The spacer columns 7 can increase the distance between the punching die 3 and the mounting plate 2, thereby leaving a lifting space for the stripper plate 4.

[0025] In a preferred solution, a plurality of groups of the punching dies 3 are arranged side by side on the upper die top plate 1 of this embodiment, and the stripper plates 4 are respectively provided corresponding to each of them. Each group of punching dies 3 and stripper plates 4 are independently arranged, which is convenient for the disassembly and assembly of the stripper plate 4 and further convenient for replacing the punch pin 5.

[0026] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A trimming die structure for hardware parts, characterized in that: It includes an upper die top plate, a mounting plate fixedly installed on the bottom surface of the upper die top plate, a punching knife fixedly installed below the mounting plate, a stripping plate elastically lifted and installed below the mounting plate, and several punching pins fixedly installed on the mounting plate; the punching knife encloses a punching cavity, the contour of the stripping plate penetrates through the punching cavity in a matching manner, and each punching pin penetrates through the stripping plate; each punching pin is installed on the mounting plate from below through an inlay block.

2. A trimming die structure for a hardware part according to claim 1, wherein: The mounting plate has an inlay hole for inserting the inlay block from the bottom surface, the inlay block is arranged in the inlay hole, and is locked to the upper die top plate from the bottom surface upward by a first screw.

3. The structure of a hardware part trimming die according to claim 2, characterized in that: The top of the inlay block has a sunken table surface lower than the top surface, and a vertical through hole corresponding to the sunken table surface. The top end of the punching pin has a T-shaped head, and the punching pin penetrates through the inlay block from top to bottom, and the top surface of the T-shaped head abuts against the bottom surface of the upper die top plate.

4. A trimming die structure for a hardware part according to claim 1, characterized in that: The stripping plate is locked and installed on an elastic device from the bottom surface upward.

5. The structure of a hardware part trimming die according to claim 1, characterized in that: The punching knife is integrally in a plate shape, and the back surface of the punching knife is fixed to the mounting plate through several separating columns.

6. The structure of a hardware part trimming die according to claim 5, wherein: Multiple groups of the punching knives are arranged side by side on the upper die top plate, and the stripping plates are respectively arranged in one-to-one correspondence.

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