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CN-121972570-A - Stamping riveting die for precise sheet metal part production

CN121972570ACN 121972570 ACN121972570 ACN 121972570ACN-121972570-A

Abstract

The invention discloses a stamping riveting die for producing a precise sheet metal part, which relates to the technical field of stamping forming and comprises a lower die holder and an upper die holder, wherein a guide sleeve matched with a guide post is arranged at the lower end of the upper die holder, a main plate is arranged between the lower die plate and the upper die plate, a patch plate is arranged at the upper end of the main plate, a middle female die is fixedly arranged in the middle position of the lower die plate, an upper male die is arranged at the position corresponding to the middle female die on the upper die plate, a plurality of groups of push rod assemblies are arranged in the lower die plate, a movable female die assembly is arranged on one side of the push rod assemblies, when the die is closed, the upper die holder moves downwards and drives a push rod unit in the push rod assemblies to move through the guide sleeve and drives the movable female die unit in the movable female die assembly to move, and the movable female die unit is matched with the middle female die to form a riveting groove.

Inventors

  • ZHANG YONG

Assignees

  • 昆山市华砼精密模具有限公司

Dates

Publication Date
20260505
Application Date
20260317

Claims (10)

  1. 1. Stamping riveting die is used in production of accurate sheet metal component, characterized in that includes: The device comprises a lower die holder (1), an upper die holder (2), a lower die plate (3) arranged on the lower die holder (1) and an upper die plate (4) arranged at the lower end of the upper die holder (2), wherein a guide post (5) is fixedly arranged at the upper end of the lower die holder (1), and a guide sleeve (6) matched with the guide post (5) is arranged at the lower end of the upper die holder (2); a main board (7) is arranged between the lower template (3) and the upper template (4), and a patch board (8) is arranged at the upper end of the main board (7); An intermediate female die (9) is fixedly arranged in the middle of the lower die plate (3), and an upper male die (10) is arranged at a position corresponding to the intermediate female die (9) on the upper die plate (4); A plurality of groups of push rod assemblies (100) are arranged in the lower die plate (3), and a movable die assembly (200) is arranged on one side of the push rod assemblies (100) facing the middle die (9); when the die is assembled, the upper die holder (2) moves downwards, the guide sleeve (6) drives the push rod unit (110) in the push rod assembly (100) to move and drives the movable die unit (210) in the movable die assembly (200) to move, and the movable die unit (210) is matched with the middle die (9) to form a riveting groove.
  2. 2. The press riveting die for precision sheet metal part production of claim 1, wherein the push rod assembly (100) comprises: the push rod unit (110) is arranged in the lower template (3) in a sliding way through the supporting seat (140); a push rod seat (120) fixedly connected with the push rod unit (110); And one end of the first elastic unit (130) is fixedly connected with the push rod seat (120), and the other end of the first elastic unit is fixedly arranged in the lower die plate (3).
  3. 3. The stamping and riveting die for producing precise sheet metal parts according to claim 2, wherein one end of the push rod seat (120) is provided with an inclined surface (121); The lower end of the guide sleeve (6) is fixedly provided with a guide rod (11) at a position corresponding to the inclined plane (121).
  4. 4. The press riveting die for precision sheet metal part production of claim 2, wherein the moving die assembly (200) comprises: The movable die unit (210) is arranged in the lower die plate (3), the movable die unit (210) comprises a vertical plate (211) matched with the push rod unit (110) and a transverse plate (212) integrally formed with the vertical plate (211), and the transverse plate (212) is arranged on the upper end face of the middle die (9) in a sliding manner; And one end of the second elastic unit (220) is fixedly connected with the supporting seat (140), and the other end of the second elastic unit is fixedly arranged on the side surface of the vertical plate (211).
  5. 5. The press-riveting die for precision sheet metal part production as claimed in claim 4, wherein the side surface of the riser (211) is provided with a groove (2111) at a position corresponding to the push rod unit (110).
  6. 6. The stamping and riveting die for producing precise sheet metal parts according to claim 4, wherein after the die assembly, the inner wall of the vertical plate (211) is overlapped with the inner wall of the middle female die (9).
  7. 7. The stamping riveting die for producing precise sheet metal parts according to claim 4, wherein a lubrication assembly (300) is arranged in the transverse plate (212), the lubrication assembly (300) comprises an oil storage tank (310) arranged in the transverse plate (212), an oil outlet (320) is arranged at the lower end of the oil storage tank (310), and a sealing plug (330) is arranged at the upper end of the oil storage tank (310); The upper end face of the sealing plug (330) is flush with the upper end face of the transverse plate (212); An oil guide port (91) which is obliquely arranged is formed in the middle female die (9).
  8. 8. The stamping and riveting die for producing precise sheet metal parts according to claim 7, wherein the lower end of the oil outlet (320) is communicated with the upper end of the oil guide port (91) after the die assembly.
  9. 9. The stamping and riveting die for producing the precise sheet metal parts according to claim 2, wherein a plurality of groups of supporting rods (12) are fixedly arranged on the side surface of the supporting seat (140), and ejector rods (13) are slidably arranged in the plurality of groups of supporting rods (12); the push rod unit (110) is fixedly provided with a bump (14) at a position corresponding to the push rod (13).
  10. 10. The stamping riveting die for producing precise sheet metal parts according to claim 9, wherein after demoulding, the push rod unit (110) moves upwards under the action of the protruding block (14) and drives the main board (7) to lift upwards in the resetting process.

Description

Stamping riveting die for precise sheet metal part production Technical Field The invention relates to the technical field of stamping forming, in particular to a stamping riveting die for producing a precise sheet metal part. Background In the production process of the precise sheet metal part, stamping and riveting are two critical procedures. With the continuous improvement of production efficiency and processing precision requirements, integrating the punch forming and rivetless riveting processes into a set of dies has become an important trend of industry development, in such integrated punch riveting dies, a plate material (such as a main plate and a patch plate) sequentially or synchronously undergoes local plastic deformation and material extrusion inside the die, so that mechanical interlocking connection is realized without adding additional rivets, and in order to complete such a complex volume forming process, the die is required to provide not only a strong axial extrusion force, but also a forming cavity capable of bearing severe radial material flow needs to be constructed in a specific forming area. The patent publication No. CN108787904B discloses a stamping and riveting integrated process and a die of a patch reinforcing structure, the process comprises the following steps of 1, placing a patch plate at a preset position of a main board and fixedly connecting the patch plate with the main board, 2, placing the patch plate and the main board which are integrally connected into a whole in the die, integrating stamping and riveting functions, 3, firstly starting the stamping function of the die to stamp and shape the patch plate and the main board, then starting the riveting function of the die to rivet the patch plate on the main board, 4, carrying out subsequent treatment on the patch plate and the main board which are riveted into a whole to obtain the patch reinforcing structure, integrally forming the main board and the patch plate, reducing the input quantity of stamping dies, reducing the tooling development cost, simplifying the working procedure, combining the stamping forming and the riveting, realizing the multifunctional requirement of a single die, avoiding the defects of cold welding, coating extrusion, welding spot pulling crack and the like caused by welding, and obtaining a formed part with good rigidity and mechanical strength. However, in the practical use process, the inventor finds that after the upper male die is pressed down to mold the main board and the patch board in the punching and riveting process, as the material is subjected to plastic deformation under pressure and filled in the cavity of the female die, a larger packing force is generated between the product and the die, so that the demolding is difficult, particularly, the product is easily pulled or deformed due to overlarge demolding resistance at the riveting point, and meanwhile, due to heavy-load environment and frequent friction sliding, the kinematic pair in the die and the surface of the molding cavity are extremely easy to generate dry friction clamping stagnation and even wear failure due to lack of effective lubrication. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a stamping riveting die for producing a precise sheet metal part. In order to solve the technical problems, the invention provides the following technical scheme: the invention provides a stamping riveting die for producing a precise sheet metal part, which comprises the following components: The device comprises a lower die holder, an upper die holder, a lower die plate arranged on the lower die holder and an upper die plate arranged at the lower end of the upper die holder, wherein a guide post is fixedly arranged at the upper end of the lower die holder, and a guide sleeve matched with the guide post is arranged at the lower end of the upper die holder; A main board is arranged between the lower template and the upper template, and a patch board is arranged at the upper end of the main board; the middle position of the lower die plate is fixedly provided with a middle female die, and the upper die plate is provided with an upper male die at a position corresponding to the middle female die; A plurality of groups of push rod assemblies are arranged in the lower die plate, and a movable die assembly is arranged on one side, facing the middle die, of each push rod assembly; when the die is assembled, the upper die holder moves downwards, the guide sleeve drives the push rod unit in the push rod assembly to move and drives the movable die unit in the movable die assembly to move, and the movable die unit is matched with the middle die to form a riveting groove. As a preferred embodiment of the present invention, the push rod assembly includes: The push rod unit is arranged in the lower template in a sliding manner through the supporting seat; The push rod seat is fixedly connected with