Round hole scrap jumping prevention structure

Abstract

The utility model relates to the technical field of scrap jumping prevention structures, and discloses a round hole scrap jumping prevention structure, one end of a punch sequentially penetrates through a cushion block and a punch fixing base, a punch hanging shoulder is installed on the outer side of the punch and located in a first assembling groove, and a punch cushion block is installed on the top of the punch hanging shoulder and the top of the punch and located in the first assembling groove. A pressing block is installed on the top of the punch fixing base, and a lower die set is arranged below the punch. When the punching machine moves downwards, the punch makes contact with materials to conduct blanking and eject waste into the area of the blanking groove in the head portion of the blanking knife edge, when the punching machine moves downwards continuously, the punch completes the blanking action and ejects the waste into the position of the material clamping groove in the middle section of the blanking knife edge, and due to the fact that the diameter of the area is 0.04 mm smaller than that of the area of the blanking groove in the head portion of the blanking knife edge, the waste is ejected into the area of the blanking groove in the head portion of the blanking knife edge. The adhesive force of the area is larger than the vacuum adsorption force, so that the waste is prevented from floating upwards, the appearance quality of a product is improved, the service life of a die is prolonged, the precision of the die is improved, and the production efficiency of stamping is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-chip jumping structures, in particular to a round hole anti-chip jumping structure. Background Art

[0002] Stamping dies are special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) during cold stamping. They are called cold stamping dies (commonly known as cold stamping dies). 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 it, thereby obtaining the desired parts.

[0003] When traditional stamping dies are used in high-speed production, some simple-shaped punching blanks are affected by the blanking speed, which will cause the punch, the inner wall of the blade and the waste to form a piston, thereby causing vacuum adsorption and causing the waste to float, seriously affecting the appearance quality of the stamping products. Sometimes it will even affect the life of the working parts of the mold, thereby affecting the accuracy of the mold and greatly affecting the stamping production efficiency. For this reason, a round hole anti-chipping structure is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a round hole anti-chip jumping structure to solve the problem proposed in the above background technology that during high-speed production, some simple-shaped punching holes of traditional stamping dies are affected by the blanking speed, which will cause the punch and the inner wall of the blade and the waste material to form a piston, thereby causing vacuum adsorption and causing the waste material to float, seriously affecting the appearance quality of the stamped products, and sometimes even affecting the life of the working parts of the mold, thereby affecting the accuracy of the mold and greatly affecting the stamping production efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a round hole anti-chip jumping structure, including a punch fixing seat, a first assembly groove is arranged inside the punch fixing seat, a pad is arranged at the bottom of the first assembly groove, a punch is arranged inside the first assembly groove, one end of the punch passes through the pad and the punch fixing seat in sequence, a punch shoulder is installed on the outside of the punch located inside the first assembly groove, a punch pad is installed inside the first assembly groove at the punch shoulder and the top of the punch, a pressure block is installed on the top of the punch fixing seat, and a lower mold assembly is arranged below the punch.

[0006] Preferably, the above-mentioned lower die assembly includes a lower die blade fixing seat, a blanking blade and a blade pad, the lower die blade fixing seat is arranged below the punch, a second assembly groove is arranged inside the lower die blade fixing seat, the blanking blade is installed inside the second assembly groove, and the blade pad is installed inside the second assembly groove and is located below the blanking blade.

[0007] Preferably, a punching groove is arranged inside the above-mentioned blanking blade, a material holding groove is arranged inside the blanking blade below the punching groove, and a material discharge groove is arranged inside the blanking blade below the material holding groove.

[0008] Preferably, the height of the punching groove is 1 mm, and the height of the clamping groove is 2 mm.

[0009] Preferably, the diameter of the clamping groove is smaller than the diameter of the punching groove, and the diameter of the discharge groove is larger than the diameter of the clamping groove.

[0010] Preferably, a threaded hole is provided at the top of the punch fixing seat, a fixing bolt is threadedly connected to the inside of the threaded hole, and the pressure block is connected to the top of the punch fixing seat via the fixing bolt.

[0011] Compared with the prior art, the utility model adopts the above technical scheme and has the following technical effects: the utility model punches and contacts the material when the punch press is descending to push the waste into the area of ​​the punching groove at the head of the blanking blade; as the punch press continues to descend, the punch completes the punching action and pushes the waste into the position of the material slot in the middle section of the blanking blade; since the diameter of this area is 0.04mm smaller than the diameter of the head punching groove area, the waste will be stuck in this area, and the adhesion force of this area will be greater than the vacuum adsorption force, thereby preventing the waste from floating up, improving the appearance quality of the product, improving the service life and precision of the mold, and ensuring the production efficiency of stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the cutting edge structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the blanking blade of the utility model;

[0017] Figure 5 It is a schematic diagram of the top structure of the utility model.

[0018] Explanation of the reference numerals in the accompanying drawings: 1. Press block; 2. Punch fixing seat; 3. Punch pad; 4. Punch shoulder; 5. Pad; 6. Punch; 7. Lower die blade fixing seat; 8. Blanking blade; 9. Blade pad; 10. First assembly groove; 11. Second assembly groove; 12. Punching groove; 13. Material clamping groove; 14. Discharge groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0021] Example

[0022] In the prior art, when the stamping die is used in high-speed production, some simple-shaped punching blanks are affected by the blanking speed, which will cause the punch, the inner wall of the blade and the waste material to form a piston, thereby causing vacuum adsorption and causing the waste material to float up, seriously affecting the appearance quality of the stamped product, and sometimes even affecting the life of the working parts of the mold, thereby affecting the accuracy of the mold and greatly affecting the stamping production efficiency.

[0023] See also Figure 1-5The utility model provides a technical solution: a round hole anti-chip jumping structure, including a punch fixing seat 2, a first assembly groove 10 is arranged inside the punch fixing seat 2, a cushion block 5 is arranged at the bottom of the first assembly groove 10, a punch 6 is arranged inside the first assembly groove 10, one end of the punch 6 passes through the cushion block 5 and the punch fixing seat 2 in sequence, the outer side of the punch 6 is located inside the first assembly groove 10 and a punch shoulder 4 is installed, the inside of the first assembly groove 10 is located at the top of the punch shoulder 4 and the punch 6, a punch cushion block 3 is installed, a pressing block 1 is installed on the top of the punch fixing seat 2, and a lower die set is arranged below the punch 6; the punch shoulder 4 and the punch 6 are welded into a whole by brazing. The body part, the gasket 5 is a gasket group composed of gaskets with thicknesses of 0.1 / 0.2 / 0.3 / 0.4 / 0.5 / 1.0 / 1.5 / 2.0mm, etc. The gaskets 5 are all installed in sequence from the head of the punch 6 and are flush with the bottom of the punch shoulder 4. The assembly gap between the gasket 5 and the punch 6 is 0.1mm loose fit. The punch shoulder 4, the gasket 5 and the punch 6 are assembled in the first assembly groove 10 inside the punch fixing seat 2. The assembly gap between the punch 6 and the punch fixing seat 2 is 0.003mm slightly tight fit, and the assembly gap between the punch shoulder 4 and the gasket 5 and the punch 6 is 0.5mm, which is dropped fit. The punch gasket 3 is assembled with the inside of the punch fixing seat 2 and flush with the punch shoulder 4.

[0024] The lower die assembly includes a lower die blade fixing seat 7, a blanking blade 8 and a blade pad 9. The lower die blade fixing seat 7 is arranged below the punch 6. A second assembly groove 11 is arranged inside the lower die blade fixing seat 7. The blanking blade 8 is installed inside the second assembly groove 11. In order to ensure the processing accuracy and strength of the parts, the shape of the blanking blade 8 must be circular and concentric inside and outside. This structure is suitable for round hole punching of various stamping dies. The marking size will be changed according to different material thicknesses and round hole sizes; the blade pad 9 is installed inside the second assembly groove 11 and is located at the blanking blade Below the opening 8, a punching groove 12 is arranged inside the blanking blade 8, a clamping groove 13 is arranged inside the blanking blade 8 below the punching groove 12, and a discharge groove 14 is arranged inside the blanking blade 8 below the clamping groove 13. The height of the punching groove 12 is 1 mm, and the height of the clamping groove 13 is 2 mm. The blanking blade 8 is installed in the second assembly groove 11 inside the lower die blade fixing seat 7, and the assembly clearance is 0.002 mm, and the blade pad 9 is installed at the bottom of the blanking blade 8, and the assembly clearance with the lower die blade fixing seat 7 is 0.01 mm, and it is slip-fitted.

[0025] The diameter of the clamping groove 13 is smaller than the diameter of the punching groove 12, and the diameter of the discharge groove 14 is larger than the diameter of the clamping groove 13; the 1mm diameter of the punching groove 12 is the size required by the product plus the punching clearance, the 2mm diameter of the clamping groove 13 is 0.04mm smaller than the diameter of the punching groove 12, which is the clamping part, and the diameter of the discharge groove 14 is 0.73mm larger than the diameter of the clamping groove 13, which is the waste material discharge part;

[0026] During use, when the punch press moves downward, the punch 6 contacts the material for punching and pushes the waste into the area of ​​the head punching groove 12 of the blanking blade 8. As the punch press continues to move downward, the punch 6 completes the punching action and pushes the waste into the position of the middle material clamping groove 13 of the blanking blade 8. Since the diameter of this area is 0.04mm smaller than the diameter of the head punching groove 12 area, the waste will be stuck in this area, and the adhesion force of this area will be greater than the vacuum adsorption force, thereby preventing the waste from floating up.

[0027] A threaded hole is provided at the top of the punch fixing seat 2, and a fixing bolt is threadedly connected inside the threaded hole. The pressing block 1 is connected to the top of the punch fixing seat 2 by the fixing bolt. The punch fixing seat 2 can limit the components inside the first assembly groove 10.

[0028] Working principle or structural principle, when in use, when the punch press moves downward, the punch 6 contacts the material for punching and pushes the waste into the area of ​​the head punching groove 12 of the blanking blade 8. As the punch press continues to move downward, the punch 6 completes the punching action and pushes the waste into the position of the middle clamping groove 13 of the blanking blade 8. Since the diameter of this area is 0.04mm smaller than the diameter of the head punching groove 12 area, the waste will be stuck in this area, and the adhesion of this area will be greater than the vacuum adsorption force to prevent the waste from floating up; the punch shoulder 4 and the punch 6 are brazed as an integral component, and the pad 5 is a gasket group composed of a thickness of 0.1 / 0.2 / 0.3 / 0.4 / 0.5 / 1.0 / 1.5 / 2.0mm and other thickness gaskets, the gasket 5 is all installed from the head of the punch 6 in sequence and flush with the bottom of the punch shoulder 4, the assembly clearance between the gasket 5 and the punch 6 is 0.1mm loose, the punch shoulder 4, the gasket 5 and the punch 6 are assembled in the first assembly groove 10 inside the punch fixing seat 2, the assembly clearance between the punch 6 and the punch fixing seat 2 is 0.003mm slightly tight, the assembly clearance between the punch shoulder 4 and the gasket 5 and the punch 6 is 0.5mm, the punch gasket 3 is assembled and flush with the inside of the punch fixing seat 2 and the punch shoulder 4. The blanking blade 8 is installed in the second assembly groove 11 inside the lower die blade fixing seat 7, with an assembly clearance of 0.002mm tight, the blade gasket 9 is installed at the bottom of the blanking blade 8, and the assembly clearance with the lower die blade fixing seat 7 is 0.01mm.

[0029] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

Claims

1. A round hole anti-chip jumping structure, comprising a punch fixing seat (2), characterized in that: The punch fixing seat (2) is provided with a first assembly groove (10) inside, a cushion block (5) is provided at the bottom of the first assembly groove (10), a punch (6) is provided inside the first assembly groove (10), one end of the punch (6) passes through the cushion block (5) and the punch fixing seat (2) in sequence, a punch shoulder (4) is installed on the outside of the punch (6) and located inside the first assembly groove (10), a punch cushion block (3) is installed inside the first assembly groove (10) and located at the top of the punch shoulder (4) and the punch (6), a pressing block (1) is installed on the top of the punch fixing seat (2), and a lower die set is provided below the punch (6).

2. The round hole anti-chip structure according to claim 1, characterized in that: The lower die assembly comprises a lower die blade fixing seat (7), a blanking blade (8) and a blade cushion block (9); the lower die blade fixing seat (7) is arranged below the punch (6); a second assembly groove (11) is arranged inside the lower die blade fixing seat (7); the blanking blade (8) is installed inside the second assembly groove (11); and the blade cushion block (9) is installed inside the second assembly groove (11) and is located below the blanking blade (8).

3. The round hole anti-chip structure according to claim 2, characterized in that: The blanking blade (8) is provided with a punching groove (12) inside, a material holding groove (13) is provided inside the blanking blade (8) below the punching groove (12), and a material discharge groove (14) is provided inside the blanking blade (8) below the material holding groove (13).

4. The round hole anti-chip structure according to claim 3, characterized in that: The height of the punching groove (12) is 1 mm, and the height of the clamping groove (13) is 2 mm.

5. The round hole anti-chip structure according to claim 3, characterized in that: The diameter of the material holding groove (13) is smaller than the diameter of the punching groove (12), and the diameter of the material discharging groove (14) is larger than the diameter of the material holding groove (13).

6. The round hole anti-chip structure according to claim 1, characterized in that: A threaded hole is provided on the top of the punch fixing seat (2), a fixing bolt is threadedly connected inside the threaded hole, and the pressing block (1) is connected to the top of the punch fixing seat (2) via the fixing bolt.

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