A high-precision and long-life upsetting opening and closing die

Abstract

The invention discloses a high-precision upsetting opening and closing die, wherein: a disc spring, a die middle pad, and a locking pin are respectively placed in the die shell, the die middle pad and the opening and closing die outer shell are installed with a compression spring A, the compression spring A is sleeved on the outside of the die inner sleeve, the die rear push rod, the die push rod, and the punch needle are inserted into the die inner sleeve, the opening and closing die inner cylinder is placed in the opening and closing die outer shell, the opening and closing die flap is covered, the opening and closing die cover is screwed into the opening and closing die locking screw, the punch needle passes through the opening and closing die inner cylinder, the die rear push rod is sleeved with a compression spring B, the die rear pad is covered, the die pad is screwed into the bolt to fix it, the main die core shell is placed in the main die shell, the main die locking pin is inserted into the main die core shell to fix it, the main die sleeve is installed in the main die core shell, the main die sleeve is installed in the main die sleeve, the main die rear pad is placed in the main die shell, the main die push pin and the main die push rod are respectively installed in the main die rear pad, and the main die core shell is inserted into one end of the opening and closing die cover. The present invention has low cost, short processing time, high speed and high efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of cold upsetting tools, and in particular relates to a high-precision upsetting opening and closing die. Background Art

[0002] With the deep integration of the new generation of informatization and manufacturing, all enterprises are investing a lot of energy in reducing costs and increasing efficiency. Cutting-free processing technology can reduce production costs for manufacturers, especially in the processing and manufacturing of aerospace fasteners. High-precision molds can process more refined products, reduce traditional processing methods such as turning, milling, and grinding, and reduce production costs. However, for some "I"-shaped products, the existing upsetting technology cannot achieve upsetting processing, and additional mechanical processing is required, resulting in high costs, long time, slow speed, and low efficiency. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned disadvantages and provide a high-precision upsetting opening and closing die with low cost, short processing time, high speed and high efficiency.

[0004] The purpose of the present invention and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0005] The invention discloses a high-precision upsetting opening and closing die, comprising a die pad, a die back pad, a disc spring, a die shell, a die middle pad, an opening and closing die outer sleeve, an opening and closing die inner cylinder, an opening and closing die flap, an opening and closing die cover, a die back ejector pin, a compression spring B, a die inner sleeve, a die ejector pin, a punch needle, a main die core shell, a main die back pad, a main die ejector pin, The main mold push rod, main mold core, main mold shell, and main mold sleeve, among which; the disc spring, the die middle pad, and the locking pin are inserted into the opening and closing mold outer sleeve respectively, the die middle pad and the opening and closing mold outer sleeve are installed with compression spring A, the compression spring A is sleeved on the outside of the die inner sleeve, the die rear push rod, the die push rod, and the punch needle are inserted into the die inner sleeve, the opening and closing mold inner cylinder is placed in the opening and closing mold outer sleeve, the opening and closing mold flap cover is screwed into the opening and closing mold locking screw, the punch needle passes through the opening and closing mold inner cylinder, the die rear push rod is sleeved with compression spring B, the die rear pad is covered, the die pad is screwed into the bolt to fix it, the main mold core shell is placed in the main mold shell and the locking pin is inserted to fix it, the main mold core shell is installed with the main mold sleeve, the main mold sleeve is installed with the main mold core, the main mold rear pad is placed in the main mold shell, the main mold ejector pin and the main mold push rod are respectively installed in the main mold rear pad, and the main mold core shell is inserted into one end of the opening and closing mold cover.

[0006] The opening and closing mold flaps are fan-shaped and are in plurality and can be opened and closed in the opening and closing mold cover.

[0007] The punching die rear ejector pin, the punching die ejector pin and the punching needle can move in the opening and closing die inner cylinder and the punching die inner sleeve.

[0008] The main mold ejector pin and main mold ejector rod can move in the main mold back pad and main mold core.

[0009] Compared with the prior art, the present invention has obvious beneficial effects; it can be seen from the above technical scheme: by respectively placing a disc spring, a die middle pad, and an opening and closing die outer sleeve in the die shell, a locking pin is inserted, a compression spring A is installed in the die middle pad and the opening and closing die outer sleeve, the compression spring A is sleeved on the outside of the die inner sleeve, the die rear push rod, the die push rod, and the punch needle are inserted into the die inner sleeve, the opening and closing die inner cylinder is placed in the opening and closing die outer sleeve, the opening and closing die flap cover is screwed into the opening and closing die locking screw, the punch needle passes through the opening and closing die inner cylinder, the die rear push rod is sleeved with compression spring B, the die rear pad is covered, the die die pad is screwed into the bolt to fix it, the main mold core shell is placed in the main mold shell, the main mold locking pin is inserted and fixed, the main mold core shell is installed in the main mold core shell, the main mold core is installed in the main mold sleeve, the main mold rear pad is placed in the main mold shell, the main mold push pin and the main mold push rod are respectively installed in the main mold rear pad, and the main mold core shell is inserted into one end of the opening and closing die cover. The opening and closing die flaps in the die are in contact with the opening and closing die cover, and the gap between the opening and closing die flaps is in an open state. The head rod diameter of the product is forged into the opening and closing die cavity, and the die moves toward the main die. The main die core and the main die core shell are in contact with the opening and closing die flaps. The opening and closing die flaps are compressed and move backward, and the opening and closing die inner cylinder is also compressed and moves backward. The opening and closing die inner cylinder squeezes the compression spring A, and the compression spring A undergoes elastic deformation. At this time, the opening and closing die flaps move backward along the tapered hole in the opening and closing die sleeve, and the gap between the opening and closing die flaps is eliminated and closed. The rear ejector pin of the die moves forward under the action of the forging machine, pushing the ejector pin of the die to move forward as well, and the ejector pin of the die continues to push the punch needle forward to impact. When the punch contacts the end face of the product's head rod diameter, the product is blocked by the main mold ejector and cannot move backward. At this time, the punch is still moving forward, forcing the product's head rod diameter to undergo plastic deformation, forming a convex head cap brim, completing the product's upsetting. Finally, the main mold core and main mold core shell begin to separate from the opening and closing mold flaps. The compression spring A stretches to push the opening and closing mold inner cylinder forward, and the opening and closing mold inner cylinder then pushes the opening and closing mold flaps forward until they contact the opening and closing mold cover. At this time, the opening and closing mold flaps open, and the gap between the opening and closing mold flaps is maximized. The head cap brim and head rod diameter of the upset product are pushed out by the compression spring B, completing one upsetting. Repeating the same action and continuous production achieves low cost, short processing time, high speed, and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention;

[0011] Figure 2 This is a structural diagram of the die pad, die back pad, disc spring, die shell, die middle pad, compression spring A, die opening and closing outer sleeve, die opening and closing inner cylinder, die flap, die opening and closing cover, die back ejector, compression spring B, die inner sleeve, die limit locking pin, die ejector, die opening and closing locking screw, punch needle, and locking pin of the present invention;

[0012] Figure 3It is a structural schematic diagram of the opening and closing mold flaps, the opening and closing mold cover, the opening and closing mold locking screws, and the gap between the opening and closing mold flaps of the present invention;

[0013] Figure 4 This is a structural diagram of the new opening and closing mold flaps of the present invention;

[0014] Figure 5 This is the usage state of the present invention Figure 1 ;

[0015] Figure 6 This is the usage state of the present invention Figure 2 ;

[0016] Figure 7 This is a diagram showing the use of the mold flaps, mold covers, mold locking screws, and the gap between the mold flaps;

[0017] Figure 8 This is a structural diagram of the product of the present invention, the rod diameter of the product head, and the finger ring of the product head;

[0018] Figure 9 It is a structural schematic diagram of the rolling product, the rod diameter of the product head, the finger ring of the product head, and the cap edge of the product head of the present invention.

[0019] Marking in the figure

[0020] 1. Die pad, 2. Die back pad, 3. Disc spring, 4. Die shell, 5. Die center pad, 6. Compression spring A, 7. Opening and closing mold outer sleeve, 8. Opening and closing mold inner cylinder, 9. Opening and closing mold flap, 10. Opening and closing mold cover, 11. Die rear ejector pin, 12. Compression spring B, 13. Die inner sleeve, 14. Die limit locking pin, 15. Die ejector pin, 16. Opening and closing mold locking screw, 17. Punch needle, 18. Locking pin, 19. Main mold locking pin, 20. Main mold core shell, 21. Main mold back pad, 22. Main mold ejector pin, 23. Main mold ejector pin, 24. Main mold core, 25. Main mold shell, 26. Main mold sleeve, 27. Product, 28 Product head rod diameter, 29 Product head finger ring, 30. Product head cap edge, 31. Opening and closing mold flap gap. DETAILED DESCRIPTION

[0021] The following is a detailed description of the specific implementation, structure, features and functions of the present invention in conjunction with the accompanying drawings and preferred embodiments.

[0022] A high-precision upsetting opening and closing die of the present invention comprises a die pad 1, a die back pad 2, a disc spring 3, a die shell 4, a die middle pad 5, a compression spring A6, an opening and closing die outer sleeve 7, an opening and closing die inner cylinder 8, an opening and closing die petal 9, an opening and closing die cover 10, a die rear ejector 11, a compression spring B12, a die inner sleeve 13, a die limit locking pin 14, a die ejector 15, an opening and closing die locking screw 16, a punch needle 17, a locking pin 18, a main die locking pin 19, a main die core shell 20, a main die back pad 21, a main die ejector 22, The main mold ejector 23, the main mold core 24, the main mold shell 25, and the main mold sleeve 26, wherein; one end of the die shell 4 is placed in the disc spring 3, the die middle pad 5 is inserted into the locking pin 18, and the other end is placed in the opening and closing mold jacket 7, the die middle pad 5 and the opening and closing mold jacket 7 are installed with a compression spring A6, and the compression spring A6 is sleeved on the outside of the die inner sleeve 13, one end of the die inner sleeve 13 is inserted into the die rear ejector 11, the middle part is inserted into the die ejector 15, and the other end is inserted into the punch needle 17, the opening and closing mold inner cylinder 8 is placed in the opening and closing mold jacket 7, and the opening and closing mold inner cylinder 8 One end is inserted into the opening and closing mold petal 9, the opening and closing mold cover 10 is covered, and the opening and closing mold locking screw 16 is screwed in. The punch needle 17 passes through the opening and closing mold inner tube 8, the punch die rear push rod 11 is covered with the compression spring B12, the punch die rear pad 2 is covered, and the punch die pad 1 is screwed into the bolt to fix it. The main mold core shell 20 is placed in the main mold shell 25 and the main mold locking pin 19 is inserted to fix it. The main mold core shell 20 is installed with the main mold sleeve 26, and the main mold core 24 is installed in the main mold sleeve 26. The main mold rear pad 21 is placed in the main mold shell 25, and the main mold ejector pin 22 and the main mold push rod 23 are respectively installed in the main mold rear pad 21. The main mold core shell 20 is inserted into one end of the opening and closing mold cover 10.

[0023] The opening and closing mold flaps 9 are fan-shaped and there are multiple of them, which can be opened and closed in the opening and closing mold cover 10.

[0024] The die rear ejector pin 11 , the die ejector pin 15 and the punching needle 17 can move in the opening and closing die inner cylinder 8 and the die inner sleeve 13 .

[0025] The main mold ejector pin 22 and the main mold ejector rod 23 can move within the main mold rear pad 21 and the main mold core 24.

[0026] When using: See Figure 5-6, the opening and closing die flap 9 in the die contacts the opening and closing die cover 10, and the opening and closing die flap gap 31 is in an open state. The head rod diameter 28 of the product 27 is upset and enters the opening and closing die cavity. The die moves toward the main die, and the main die core 24 and the main die core shell 20 contact the opening and closing die flap 9. The opening and closing die flap 9 is compressed and moves backward. The opening and closing die inner cylinder 8 is also compressed and moves backward. The opening and closing die inner cylinder 8 squeezes the compression spring A6, and the compression spring A6 undergoes elastic deformation. At this time, the opening and closing die flap 9 moves backward along the inner tapered hole of the opening and closing die sleeve 7, and the opening and closing die flap gap 31 is eliminated and closed. The rear push rod 11 of the die moves forward under the action of the upsetting machine, pushing the die push rod 15 to move forward as well, and the die push rod 15 continues to push the punch needle 17 impacts forward. When the punch 17 contacts the end face of the head rod diameter 28 of the product 27, the product 27 is blocked by the main mold ejector 22 in the main mold and cannot move backward. At this time, the punch 17 is still moving forward, and the head rod diameter 28 of the product 27 is forced to undergo plastic deformation, forming a bulge of the head cap brim 30, completing the product upsetting. Finally, the main mold core 24 and the main mold core shell 20 begin to classify with the opening and closing mold flap 9, and the compression spring stretches to push the opening and closing mold inner cylinder 8 forward. The opening and closing mold inner cylinder 8 then pushes the opening and closing mold flap 9 forward until it contacts the opening and closing mold cover. At this time, the opening and closing mold flap 9 is open, and the opening and closing mold flap gap 31 is the largest. The head cap brim and head rod diameter of the upset product 27 are pushed out by the compression spring B 12.

[0027] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A high-precision upsetting opening and closing die, comprising a die pad (1), a die rear pad (2), a disc spring (3), a die shell (4), a die middle pad (5), an opening and closing die outer sleeve (7), an opening and closing die inner sleeve (8), an opening and closing die flap (9), an opening and closing die cover (10), a die rear ejector pin (11), a compression spring B (12), a die inner sleeve (13), a die ejector pin (15), a punch needle (17), a main die core shell (20), a main die rear pad (21), a main die ejector pin (22), a main die ejector pin (23), a main die core (24), a main die shell (25), and a main die sleeve (26), characterized in that; The disc spring (3), the die center pad (5), and the die opening and closing outer sleeve (7) are respectively placed in the die shell (4), and the locking pin (18) is inserted. The die center pad (5) and the die opening and closing outer sleeve (7) are installed with a compression spring A (6). The compression spring A (6) is sleeved on the outside of the die inner sleeve (13). The die rear ejector (11), the die ejector (15), and the punch needle (17) are inserted into the die inner sleeve (13). The die opening and closing inner sleeve (8) and the die opening and closing petal (9) are placed in the die opening and closing outer sleeve (7). The die opening and closing cover (10) is covered and the die opening and closing locking screw ( 16), the punch needle (17) passes through the inner cylinder (8) of the opening and closing mold, the punch rear ejector (11) is covered with the compression spring B (12) and the punch rear pad (2), the punch die pad (1) is screwed into the bolt to fix, the main mold core shell (20) is placed in the main mold shell (25), the main mold locking pin (19) is inserted and fixed, the main mold core shell (20) is installed with the main mold sleeve (26), the main mold core (24) is installed in the main mold sleeve (26), the main mold shell (25) is placed in the main mold rear pad (21), the main mold ejector pin (22), The main mold ejector pin (23) and the main mold core shell (20) are inserted into one end of the opening and closing mold cover (10). The opening and closing mold flaps (9) are fan-shaped and have multiple parts, which can be opened and closed in the opening and closing mold cover (10). The die rear ejector pin (11), the die ejector pin (15), and the punch needle (17) can move in the opening and closing mold inner cylinder (8) and the die inner sleeve (13).

2. A high-precision upsetting opening and closing die according to claim 1, characterized in that; The main mold ejector pin (22) and the main mold ejector rod (23) can move within the main mold rear pad (21) and the main mold core (24).

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