Novel internal high-pressure synchronous punching structure

Abstract

The utility model provides a novel internal high pressure synchronous punching structure which comprises two die bases and two die bodies, the two die bases cover each other, the die bodies are embedded in the covering faces of the die bases, forming cavities are formed in the die bodies, second sliding open grooves are formed in the die bases, and the second sliding open grooves are formed in the die bases. A second limiting block and a punching oil cylinder are fixedly arranged in the second sliding open groove, two first inclined faces are arranged on the face, close to the punching oil cylinder, of the second limiting block, third sliding grooves are formed in the first inclined faces, and the punching oil cylinder is fixedly connected with a driving sliding block. The second inclined plane of the driving sliding block and the first inclined plane of the second limiting block form a rigid meshing track to force the two punch assemblies to achieve completely consistent displacement tracks along the third sliding groove, so that the ends of the double punches achieve high-synchronization punching, and the phenomenon that the punches making contact with materials firstly pull and twist the materials due to the fact that the punches are not synchronous is eliminated. The problems of hole shape distortion and pipe body warping are solved, and the purpose of improving the hole position precision is achieved.

Description

Technical Field

[0001] This utility model relates to the field of punching equipment technology, specifically a novel internal high-pressure synchronous punching structure. Background Technology

[0002] In the field of high-pressure forming of pipe fittings, the following technical bottlenecks have long existed in the processing of terminal holes:

[0003] Asynchronous stamping leads to uncontrolled deformation: In traditional multi-punch independent drive schemes, due to differences in mechanical tolerances and hydraulic response, there is a millisecond-level deviation in the timing of punch contact with the pipe. The punch that contacts the material first generates a strong shear force on the pipe body, causing plastic distortion in the unstamped area, resulting in problems such as subsequent hole position displacement and hole edge collapse.

[0004] Process discretization restricts efficiency: asynchronous punching requires step-by-step positioning and processing, and repeated positioning and clamping adjustments with pipe fittings, resulting in low production efficiency.

[0005] Uneven load conditions accelerate equipment failure: Asymmetrical punching force causes the first-acting punch to bear overload stress, which leads to stress concentration at the root of the punch and causes microcracks, resulting in a sharp reduction in die life and a surge in maintenance costs.

[0006] In summary, there is an urgent need for a rigid mechanical synchronization architecture to eliminate timing deviations at the source and achieve high-precision, zero-deformation, and highly reliable processing of pipe punching. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] In view of the shortcomings of the prior art, this utility model provides a novel internal high-pressure synchronous punching structure, which solves the problems mentioned in the background art.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel internal high-pressure synchronous punching structure, characterized in that: it includes two mold bases and two mold bodies, the two mold bases are fitted together, the mold body is embedded in the fitting surface of the mold base, a forming cavity is formed in the mold body, a second sliding groove is formed on the mold base, a second limiting block and a punching cylinder are fixedly arranged in the second sliding groove, two first inclined surfaces are formed on the side of the second limiting block near the punching cylinder, a third sliding groove is formed on the first inclined surface, a driving slider is fixedly connected to the punching cylinder, two punch assemblies are fixedly arranged on the driving slider, and the punch assemblies are slidably connected to the third sliding groove.

[0011] Preferably, the driving slider has two second inclined surfaces on the side near the second limiting block, and the two punch assemblies are respectively fixedly connected to the second inclined surfaces, and the second inclined surfaces are adapted to the first inclined surfaces.

[0012] Preferably, the punch assembly includes a fourth limiting block, a punch body, and a punch end. One end of the punch body is fixedly connected to the fourth limiting block, and the other end of the punch body is fixedly connected to the punch end. The fourth limiting block is fixedly connected to the second inclined surface, and a return spring is sleeved on the outer circular surface of the punch body.

[0013] Preferably, the punching cylinder has a fourth sliding groove, a piston rod is slidably disposed in the fourth sliding groove, one end of the piston rod is fixedly connected to a driving slider, and a third limiting block is fixedly sleeved on the outer circumference of the end of the piston rod near the driving slider.

[0014] Preferably, the mold base cover surface is provided with a first limiting slot at both ends of the mold body, and a first limiting block is detachably connected in the first limiting slot, and the first limiting block is fixedly connected to the mold body.

[0015] Preferably, a limiting guide rail is provided on the side of the mold base away from the second limiting block, and a cover screw assembly is fixedly provided on the side of the mold base close to the second limiting block.

[0016] (III) Beneficial Effects

[0017] This utility model provides a novel internal high-pressure synchronous punching structure. It has the following beneficial effects:

[0018] 1. By using the second inclined surface of the drive slider and the first inclined surface of the second limiting block to form a rigid meshing track, the two punch assemblies are forced to achieve a completely consistent displacement trajectory along the third sliding groove, so that the ends of the two punches achieve high synchronous punching. This eliminates the problems of hole shape distortion and tube warping caused by the punch that contacts the material first due to asynchronous punches pulling and twisting the material. While improving production efficiency, it also achieves the goal of improving hole position accuracy.

[0019] 2. The punch pressure is evenly distributed to the second inclined surface through the fourth limiting block. The inclined surface meshing structure symmetrically transmits the load to the second limiting block base, so that the two punches are subjected to balanced force, thereby reducing the eccentric wear of a single punch. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a top view of the structure of this utility model;

[0022] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0023] Figure 4 This is an exploded structural diagram of the punch assembly and drive slider in this utility model.

[0024] In the diagram: 11. Mold base; 12. Mold body; 13. Molding cavity; 14. First limiting slot; 15. First limiting block; 16. Second sliding slot; 17. Second limiting block; 18. First inclined surface; 19. Third sliding groove; 20. Punching cylinder; 21. Drive slider; 22. Fourth sliding groove; 23. Piston rod; 24. Third limiting block; 25. Second inclined surface; 26. Fourth limiting block; 27. Punch body; 28. Punch end; 29. ​​Return spring; 30. Cover screw assembly; 31. Limiting guide rail. Detailed Implementation

[0025] This utility model embodiment provides a novel internal high-pressure synchronous punching structure, such as... Figure 1-4 As shown, it includes a mold base 11, a mold body 12, a forming cavity 13, a first limiting slot 14, a first limiting block 15, a second sliding slot 16, a second limiting block 17, a first inclined surface 18, a third sliding groove 19, a punching cylinder 20, a driving slider 21, a fourth sliding groove 22, a piston rod 23, a third limiting block 24, a second inclined surface 25, a fourth limiting block 26, a punch body 27, a punch end 28, a return spring 29, a cover screw assembly 30, and a limiting guide rail 31.

[0026] like Figure 1-4 As shown, two mold bases 11 are fitted together, and the mold body 12 is embedded in the fitting surface of the mold base 11. A forming cavity 13 is provided in the mold body 12. A second sliding groove 16 is provided on the mold base 11. A second limiting block 17 and a punching cylinder 20 are fixedly installed in the second sliding groove 16. Two first inclined surfaces 18 are provided on the side of the second limiting block 17 near the punching cylinder 20. A third sliding groove 19 is provided on the first inclined surface 18. A driving slider 21 is fixedly connected to the punching cylinder 20. Two punch assemblies are fixedly installed on the driving slider 21. The punch assemblies are slidably connected to the third sliding groove 19.

[0027] Two second inclined surfaces 25 are provided on the side of the drive slider 21 near the second limiting block 17. The two punch assemblies are fixedly connected to the second inclined surfaces 25 respectively. The second inclined surfaces 25 are adapted to the first inclined surfaces 18. The mold base 11 has first limiting slots 14 at both ends of the mold body 12 on the mating surface. A first limiting block 15 is detachably connected in the first limiting slot 14. The first limiting block 15 is fixedly connected to the mold body 12.

[0028] The punch assembly includes a fourth limiting block 26, a punch body 27, and a punch end 28. One end of the punch body 27 is fixedly connected to the fourth limiting block 26, and the other end of the punch body 27 is fixedly connected to the punch end 28. The fourth limiting block 26 is fixedly connected to the second inclined surface 25, and a return spring 29 is sleeved on the outer circular surface of the punch body 27.

[0029] The punching cylinder 20 has a fourth sliding groove 22, and a piston rod 23 is slidably arranged in the fourth sliding groove 22. One end of the piston rod 23 is fixedly connected to a drive slider 21. A third limiting block 24 is fixedly sleeved on the outer circumference of the end of the piston rod 23 near the drive slider 21. A limiting guide rail 31 is provided on the side of the mold base 11 away from the second limiting block 17. A cover screw assembly 30 is fixedly arranged on the side of the mold base 11 near the second limiting block 17. The cover screw assembly 30 is prior art. The limiting guide rail 31 is used to fix the mold base 11 to the worktable.

[0030] When performing internal high-pressure synchronous punching, the mold base 11 is first fixed to the workbench clamping assembly through the forming cavity 13. The first limiting block 15 is embedded in the first limiting slot 14. The mold body 12 is fixedly embedded in the cover surface of the mold base 11 through the first limiting block 15. The forming cavity 13 on one side is filled with casting liquid. The two mold bases 11 are covered by the clamping assembly. The two mold bases 11 are fixed by the cover screw assembly 30.

[0031] Then, inert gas is filled into the casting liquid in the molding cavity 13 at the end of the first limiting block 15 away from the mold body 12. The inert gas increases the pressure inside the molding cavity 13, forcing the casting liquid to adhere tightly to the outer wall of the molding cavity 13, and causing the casting liquid in the molding cavity 13 to undergo internal high-pressure molding.

[0032] Finally, when the temperature inside the forming cavity 13 drops to the point where the casting liquid cools and forms, the punching cylinder 20 is activated. The piston rod 23 inside the punching cylinder 20 pushes the drive slider 21 to move rapidly toward the second limit block 17. The drive slider 21 drives the two punch bodies 27 to slide relative to the third sliding groove 19 through the fourth limit block 26. The two punch bodies 27 drive the two punch ends 28 to punch the tube body that has cooled and formed inside the mold body 12 simultaneously. The punch bodies 27 compress the return spring 29, and the elastic potential energy of the return spring 29 increases. After punching is completed, the punching cylinder 20 is closed, and the elastic potential energy of the return spring 29 is released. The return spring 29 pushes the punch body 27 to slide away from the second limit block 17 and reset.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel internal high-pressure synchronous punching structure, characterized in that: The device includes two mold bases (11) and two mold bodies (12). The two mold bases (11) are fitted together, and the mold bodies (12) are embedded in the fitting surfaces of the mold bases (11). A forming cavity (13) is provided inside the mold body (12). A second sliding groove (16) is provided on the mold base (11). A second limiting block (17) and a punching cylinder (20) are fixedly installed in the second sliding groove (16). Two first inclined surfaces (18) are provided on the side of the second limiting block (17) near the punching cylinder (20). A third sliding groove (19) is provided on the first inclined surface (18). A driving slider (21) is fixedly connected to the punching cylinder (20). Two punch assemblies are fixedly installed on the driving slider (21). The punch assemblies are slidably connected to the third sliding groove (19).

2. The novel internal high-pressure synchronous punching structure according to claim 1, characterized in that: The drive slider (21) has two second inclined surfaces (25) on the side near the second limiting block (17), and the two punch assemblies are respectively fixedly connected to the second inclined surfaces (25). The second inclined surfaces (25) are adapted to the first inclined surface (18).

3. The novel internal high-pressure synchronous punching structure according to claim 2, characterized in that: The punch assembly includes a fourth limiting block (26), a punch body (27), and a punch end (28). One end of the punch body (27) is fixedly connected to the fourth limiting block (26), and the other end of the punch body (27) is fixedly connected to the punch end (28). The fourth limiting block (26) is fixedly connected to the second inclined surface (25). A return spring (29) is sleeved on the outer circular surface of the punch body (27).

4. The novel internal high-pressure synchronous punching structure according to claim 2, characterized in that: The punching cylinder (20) has a fourth sliding groove (22) inside, and a piston rod (23) is slidably arranged in the fourth sliding groove (22). One end of the piston rod (23) is fixedly connected to a driving slider (21), and a third limiting block (24) is fixedly sleeved on the outer circular surface of the end of the piston rod (23) near the driving slider (21).

5. A novel internal high-pressure synchronous punching structure according to claim 1, characterized in that: The mold base (11) has a first limiting slot (14) at both ends of the mold body (12) on its mating surface. A first limiting block (15) is detachably connected in the first limiting slot (14) and is fixedly connected to the mold body (12).

6. The novel internal high-pressure synchronous punching structure according to claim 1, characterized in that: The mold base (11) has a limit guide rail (31) on the side away from the second limit block (17), and a cover screw assembly (30) is fixedly provided on the side of the mold base (11) close to the second limit block (17).

Images