Die of high-strength steel anti-back-jacking structure

Abstract

The utility model belongs to the technical field of die manufacturing and production, and particularly relates to a die of a high-strength steel back-jacking-preventing structure, which comprises an upper die holder and a lower die holder. An upper mold core is arranged on the upper mold base; the upper mold core is arranged in the center of the upper mold base; a lower mold core, a blank holder and a first limiting block are arranged on the lower mold base; the lower mold core is arranged in the center of the lower mold base; the blank holder is arranged on the lower die base and located on the outer side of the lower die base. The first limiting block is arranged on the lower die base and located on one side of the blank holder. Two sets of symmetrically-distributed back-jacking-preventing mechanisms are arranged between the upper die base and the lower die base. Each back-jacking-preventing mechanism comprises an abutting assembly and a limiting assembly. The abutting assembly is arranged on one side of the upper mold core, and a second limiting block corresponding to the first limiting block is arranged on the abutting assembly; the limiting assembly is arranged on the lower die base and located on one side of the blank holder, and a clamping block is arranged on the limiting assembly. The abutting assembly can abut against the limiting assembly so as to drive the clamping block to extend outwards, and the clamping block is clamped in the blank holder so as to delay the blank holder to move upwards when the upper die base is away from the lower die base.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold manufacturing and production, and particularly relates to a mold with a high-strength steel anti-return top structure. Background Art

[0002] Stamping dies are special process equipment used to process materials into parts during cold stamping. Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform the material, thereby obtaining the desired parts.

[0003] At present, when the stamping die is stamping, the upper die seat is close to the lower die seat, the upper die seat drives the pre-pressing block to press the material onto the lower die core, and the upper die core presses the material onto the pressure ring, and then the upper die core and the lower die core are closed to form the material. However, when the existing mold is opened, the upper die seat and the lower die seat are separated from each other. At this time, the pressure ring drives the product to quickly reset upward, which may cause the product to collide with the upper die core, causing the product to return to the top and deform, and may even damage the molding surface of the upper die core, reducing work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a mold with a high-strength steel anti-return top structure, aiming to solve the technical problem in the prior art that when the existing mold is opened, the pressure ring drives the product to quickly return upward, which may cause the product to collide with the upper mold core, causing the product to return to the top and deform, and may even damage the molding surface of the upper mold core.

[0005] To achieve the above-mentioned purpose, the embodiment of the utility model provides a mold of a high-strength steel anti-return top structure, comprising an upper mold base and a lower mold base; the upper mold base is provided with an upper mold core; the upper mold core is arranged in the center of the upper mold base; the lower mold base is provided with a lower mold core, a pressure ring and a first limit block; the lower mold core is arranged in the center of the lower mold base; the pressure ring is arranged on the lower mold base and is located on the outer side of the lower mold base; the first limit block is arranged on the lower mold base and is located on one side of the pressure ring;

[0006] Two groups of symmetrically distributed anti-return mechanisms are arranged between the upper die base and the lower die base, and the anti-return mechanism includes an abutment assembly and a limit assembly; the abutment assembly is arranged on one side of the upper die core, and the abutment assembly is provided with a second limit block corresponding to the first limit block; the limit assembly is arranged on the lower die base and is located on one side of the pressure ring, and the limit assembly has a clamping block; the abutment assembly can abut against the limit assembly to drive the clamping block to extend outward, and the clamping block is clamped in the pressure ring to delay the upward movement of the pressure ring when the upper die base is away from the lower die base.

[0007] Preferably, the abutment assembly includes a first mounting seat; the first mounting seat is arranged on the upper mold seat, and a plurality of groups of telescopic rods are arranged between the first mounting seat and the upper mold seat, and a first spring is sleeved on the telescopic rod; the first mounting seat is provided with a clamping rod at one end close to the limiting assembly, and the clamping rod can enter or detach from the limiting assembly.

[0008] Preferably, the clamping rod has a first inclined surface at one end close to the limiting assembly, and the first inclined surface is inclined.

[0009] Preferably, the limit assembly includes a second mounting seat and a limit rod; a sliding cavity is provided in the second mounting seat; the limit rod is slidably connected in the sliding cavity, and a second spring is provided between the limit rod and the sliding cavity; one end of the limit rod passes through the second mounting seat and is connected to the locking block.

[0010] Preferably, the limiting rod has a second inclined surface corresponding to the first inclined surface at one end away from the agglomeration block, and the second inclined surface is inclined; the abutment component enters the limiting component, and the first inclined surface abuts against the second inclined surface.

[0011] Preferably, a pre-pressing block is provided in the upper die core, and the pre-pressing block is used to press the material onto the lower die core; a third spring is provided between the pre-pressing block and the upper die seat.

[0012] Preferably, a through hole is provided in the center of the pressure ring, and the lower die core is located in the through hole; the lower die core is slidably connected to the through hole; and a fourth spring is provided between the pressure ring and the lower die seat.

[0013] Preferably, two groups of positioning pins for quick installation and positioning are provided between the lower die core and the lower die base.

[0014] The above one or more technical solutions in the mold of the high-strength steel anti-return-top structure provided by the embodiment of the utility model have at least one of the following technical effects: by setting the anti-return-top mechanism, when the upper mold base and the lower mold base are opened, under the action of the abutment component, the clamping block in the limiting component is clamped in the pressure ring until the abutment component is disengaged from the limiting component under the action of the upper mold base, and then the clamping block is disengaged from the pressure ring. At this time, the pressure ring starts to move up, thereby delaying the upward movement of the pressure ring, avoiding the pressure ring from moving up in advance when opening the mold, causing the product to return to the top and deform, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A schematic diagram of the overall structure of a mold of a high-strength steel anti-return structure provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the internal structure of a mold of a high-strength steel anti-return structure provided by an embodiment of the utility model;

[0018] Figure 3 for Figure 2 A is an enlarged schematic diagram.

[0019] Among them, the reference numerals in the figure are:

[0020] 10. Upper die seat; 11. Upper die core; 12. Pre-pressing block; 13. Third spring; 20. Lower die seat; 21. Lower die core; 22. Pressure ring; 222. Fourth spring; 23. First limit block; 24. Positioning pin; 31. Abutment assembly; 311. Second limit block; 312. First mounting seat; 313. Telescopic rod; 313a. First spring; 314. Clamping rod; 314a. First inclined surface; 32. Limiting assembly; 321. Clamping block; 322. Second mounting seat; 322a. Sliding cavity; 323. Limiting rod; 323a. Second spring; 323b. Second inclined surface. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] In one embodiment of the present invention, Figures 1 to 3 As shown, a mold of a high-strength steel anti-return top structure is provided, including an upper mold base 10 and a lower mold base 20. An upper mold core 11 is provided on the upper mold base 10. The upper mold core 11 is arranged in the center of the upper mold base 10. A lower mold core 21, a pressure ring 22 and a first limit block 23 are provided on the lower mold base 20. The lower mold core 21 is arranged in the center of the lower mold base 20. The pressure ring 22 is arranged on the lower mold base 20 and is located on the outer side of the lower mold base 20. The first limit block 23 is arranged on the lower mold base 20 and is located on one side of the pressure ring 22.

[0026] Two sets of symmetrically distributed anti-return mechanisms are provided between the upper die base 10 and the lower die base 20, and the anti-return mechanisms include an abutment component 31 and a limit component 32. The abutment component 31 is provided on one side of the upper die core 11, and a second limit block 311 corresponding to the first limit block 23 is provided on the abutment component 31. The limit component 32 is provided on the lower die base 20 and is located on one side of the blank holder 22, and a clamping block 321 is provided on the limit component 32. The abutment component 31 can abut against the limit component 32 to drive the clamping block 321 to extend outward, and the clamping block 321 is clamped in the blank holder 22 to delay the upward movement of the blank holder 22 when the upper die base 10 is away from the lower die base 20.

[0027] When the upper mold base 10 and the lower mold base 20 are opening the mold, under the action of the abutment component 31, the clamping block in the limiting component 32 is clamped in the pressure ring 22 until the abutment component 31 is disengaged from the limiting component 32 under the action of the upper mold base 10, and then the clamping block is disengaged from the pressure ring 22. At this time, the pressure ring 22 starts to move upward, thereby delaying the upward movement of the pressure ring 22, thereby avoiding the pressure ring 22 moving up in advance when the mold is opened, causing the product to return to the top and deform, thereby improving work efficiency.

[0028] Further, the abutment assembly 31 includes a first mounting seat 312. The first mounting seat 312 is disposed on the upper die seat 10, and a plurality of telescopic rods 313 are disposed between the first mounting seat 312 and the upper die seat 10, and a first spring 313a is sleeved on the telescopic rod 313. A clamping rod 314 is disposed at one end of the first mounting seat 312 close to the limit assembly 32, and the clamping rod 314 can enter or leave the limit assembly 32. The clamping rod 314 has a first inclined surface 314a at one end close to the limit assembly 32, and the first inclined surface 314a is disposed in an inclined manner. When the upper mold base 10 and the lower mold base 20 are in a closed mold state, the first inclined surface 314a of the clamping rod 314 conflicts with the limit assembly 32, and as the upper mold base 10 moves downward, the limit block in the limit assembly 32 also extends outward, thereby locking the pressure ring 22; when the upper mold base 10 and the lower mold base 20 are in an open mold state, under the action of the first spring 313a and the telescopic rod 313, the clamping rod 314 on the first mounting seat 312 is always clamped with the limit assembly 32, so that the limit block in the limit assembly 32 always locks the pressure ring 22 until the pulling force of the upper mold base 10 is greater than the elastic force of the first spring 313a. At this time, the limit block also slowly disengages from the pressure ring 22, thereby realizing the delayed upward movement of the pressure ring 22, avoiding the product from returning to the top and deforming, and improving the service life of the mold.

[0029] Furthermore, the limiting assembly 32 includes a second mounting seat 322 and a limiting rod 323. A sliding cavity 322a is provided in the second mounting seat 322. The limiting rod 323 is slidably connected in the sliding cavity 322a, and a second spring 323a is provided between the limiting rod 323 and the sliding cavity 322a. One end of the limiting rod 323 passes through the second mounting seat 322 and is connected to the agglutination block 321. The limiting rod 323 has a second inclined surface 323b corresponding to the first inclined surface 314a at one end away from the agglutination block 321, and the second inclined surface 323b is inclined. The abutting assembly 31 enters the limiting assembly 32, the first inclined surface 314a abuts against the second inclined surface 323b, and the first inclined surface 314a and the second inclined surface 323b are vertically arranged. When the pulling force of the upper mold base 10 is greater than the elastic force of the second spring 323a, the first inclined surface 314a slowly detaches from the second inclined surface 323b, and the limiting rod 323 is reset accordingly under the elastic action of the second spring 323a, so that the limiting block detaches from the pressure ring 22, thereby delaying the upward movement of the pressure ring 22, avoiding deformation of the product due to returning to the top, and increasing the service life of the mold.

[0030] Furthermore, a pre-pressing block 12 is provided in the upper die core 11, and the pre-pressing block 12 is used to press the material onto the lower die core 21. A third spring 13 is provided between the pre-pressing block 12 and the upper die base 10. A through hole is provided in the center of the pressure ring 22, and the lower die core 21 is located in the through hole. The lower die core 21 is slidably connected to the through hole. A fourth spring 222 is provided between the pressure ring 22 and the lower die base 20. When the upper die base 10 and the lower die base 20 are closed, the upper die base 10 drives the pre-pressing block 12 to approach the material, and under the action of the third spring 13, the material is pressed onto the lower die core 21, and then the material is pressed onto the pressure ring 22, thereby completing the compaction of the material.

[0031] Furthermore, two sets of positioning pins 24 for quick installation and positioning are provided between the lower mold core 21 and the lower mold base 20. By providing the positioning pins 24, the lower mold core 21 and the lower mold base 20 can be quickly installed, simplifying the installation steps of the mold.

[0032] By setting up an anti-return mechanism, when the upper mold base 10 and the lower mold base 20 are opened, under the action of the abutment component 31, the clamping block in the limit component 32 is clamped in the pressure ring 22 until the abutment component 31 is disengaged from the limit component 32 under the action of the upper mold base 10, and then the clamping block is disengaged from the pressure ring 22. At this time, the pressure ring 22 starts to move up, thereby delaying the upward movement of the pressure ring 22, thereby avoiding the pressure ring 22 moving up in advance when the mold is opened, causing the product to return to the top and deform, thereby improving work efficiency.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold with a high-strength steel anti-return structure, characterized in that: It comprises an upper die seat and a lower die seat; the upper die seat is provided with an upper die core; the upper die core is arranged at the center of the upper die seat; the lower die seat is provided with a lower die core, a pressure ring and a first limit block; the lower die core is arranged at the center of the lower die seat; the pressure ring is arranged on the lower die seat and is located at the outer side of the lower die seat; the first limit block is arranged on the lower die seat and is located at one side of the pressure ring; Two groups of symmetrically distributed anti-return mechanisms are arranged between the upper die base and the lower die base, and the anti-return mechanism includes an abutment assembly and a limit assembly; the abutment assembly is arranged on one side of the upper die core, and the abutment assembly is provided with a second limit block corresponding to the first limit block; the limit assembly is arranged on the lower die base and is located on one side of the pressure ring, and the limit assembly has a clamping block; the abutment assembly can abut against the limit assembly to drive the clamping block to extend outward, and the clamping block is clamped in the pressure ring to delay the upward movement of the pressure ring when the upper die base is away from the lower die base.

2. The mold of the high-strength steel anti-return structure according to claim 1 is characterized in that: The abutment assembly includes a first mounting seat; the first mounting seat is arranged on the upper mold seat, and a plurality of telescopic rods are arranged between the first mounting seat and the upper mold seat, and a first spring is sleeved on the telescopic rod; the first mounting seat is provided with a clamping rod at one end close to the limit assembly, and the clamping rod can enter or detach from the limit assembly.

3. The mold of the high-strength steel anti-return structure according to claim 2 is characterized in that: The clamping rod has a first inclined surface at one end close to the limiting assembly, and the first inclined surface is inclined.

4. The mold of the high-strength steel anti-return structure according to claim 3 is characterized in that: The limiting assembly includes a second mounting seat and a limiting rod; a sliding cavity is provided in the second mounting seat; the limiting rod is slidably connected in the sliding cavity, and a second spring is provided between the limiting rod and the sliding cavity; one end of the limiting rod passes through the second mounting seat and is connected to the locking block.

5. The mold of the high-strength steel anti-return structure according to claim 4 is characterized in that: The end of the limiting rod away from the agglomeration block has a second inclined surface corresponding to the first inclined surface, and the second inclined surface is inclined; the abutment component enters the limiting component, and the first inclined surface abuts against the second inclined surface.

6. The mold of the high-strength steel anti-return structure according to any one of claims 1 to 5, characterized in that: A pre-pressing block is arranged in the upper die core, and the pre-pressing block is used to press the material onto the lower die core; a third spring is arranged between the pre-pressing block and the upper die seat.

7. The mold of the high-strength steel anti-return structure according to claim 6, characterized in that: A through hole is provided in the center of the pressure ring, and the lower die core is located in the through hole; the lower die core is slidably connected to the through hole; a fourth spring is provided between the pressure ring and the lower die seat.

8. The mold of the high-strength steel anti-return structure according to claim 7, characterized in that: Two groups of positioning pins for quick installation and positioning are arranged between the lower die core and the lower die base.

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