A continuous twist forming die
By using a gear-driven punch rotation system in a continuous torsion forming die, the high cost and large space occupation of existing dies for forming complex angles are solved, enabling precise forming and stable production of products with complex angles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RIHAN PRECISION MASCH (KUNSHAN) CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-16
AI Technical Summary
Existing stamping technology requires an additional side forming process when dealing with products with an angle of less than 90° and a distorted shape. This results in high mold costs, design difficulties, large space requirements, and inconvenient debugging.
The continuous torsion forming mold is adopted, and the punch is driven by gear to rotate in the die insert to achieve torsion forming, which can adapt to complex angle requirements. It is integrated into a mold, reducing costs and space occupation.
It enables precise molding of products with various complex angles, reduces mold costs, simplifies the design and debugging process, and improves production stability.
Smart Images
Figure CN224359254U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping technology, specifically a continuous torsion forming die. Background Technology
[0002] In modern stamping technology, the forming die mainly consists of several parts, including the upper forming block, pressure plate, spring, lower forming block, and ejector pin. The stamping method is typically vertical stamping. However, this structure and stamping method have significant limitations, only applicable to products with no negative angles and angles greater than or equal to 90°. When encountering products with angles less than 90° and more distorted shapes, vertical stamping often fails to meet the forming requirements. To achieve the forming of such complex angles and distorted shapes, a side forming process or additional side shaping process is usually required. This involves converting the downward force of the press into a left-right pushing force, using a slide block to achieve the distorted shape and required angle of the product.
[0003] However, adding a side forming process not only significantly increases mold costs but also increases the difficulty of design and debugging. Especially when the product space is limited, the side pushing mechanism is difficult to meet actual needs. In addition, the side pushing mechanism also has problems in terms of structure, such as large space occupation, high cost, high processing difficulty, and inconvenient debugging. Utility Model Content
[0004] To address the problems mentioned in the background art, this utility model provides a continuous torsion forming mold, including an upper mold base and a lower mold base. The lower end of the upper mold base is provided with an upper pad plate, and the lower end of the upper pad plate is provided with an upper mold clamping plate. The lower end of the upper mold clamping plate is provided with a stop plate, and the lower end of the stop plate is provided with a stripper plate, a pressure block, and an upper mold forming block. The upper end of the lower mold base is provided with a lower pad plate, and the upper end of the lower pad plate is provided with a lower template, a lower mold insert, and a lower mold forming block. A positioning pin is provided inside the stripper plate, and a positioning hole that mates with the positioning pin is provided inside the lower pad plate. A support plate is provided on one side of the lower pad plate, and a fixed seat is provided on the support plate. A transmission pull tooth is provided inside the fixed seat, and one end of the transmission pull tooth is connected to the output shaft of a cylinder. One side is provided with a second fixed plate, the lower end of which is connected to the lower mold base. The fixed base has two through holes. The drive shaft is located in one of the through holes of the fixed base. The drive shaft is fitted with a large gear, a first fixed shim, a drive gear, and a second fixed shim in sequence. The other through hole of the fixed base is provided with a fixed sleeve, and a small gear is provided in the fixed sleeve. The output shaft of the second cylinder is located in one end of the small gear. The end of the second cylinder is connected to the first fixed plate. One side of the first fixed plate is connected to one side of the support plate. The other end of the small gear is connected to one end of the torsion punch. The other end of the torsion punch is located in the lower mold insert. The drive gear and the drive pull gear are meshed with each other. The small gear and the large gear are meshed with each other.
[0005] The upper end of the upper mold base is connected to the mold handle via a fixing component.
[0006] The lower end of the upper mold base is fixed with several guide pillars, and the upper end of the lower mold base is provided with several guide pillar fixing blocks with corresponding structures at the corresponding positions of the guide pillars.
[0007] The lower end of the lower mold base is connected to several lower pads.
[0008] The lower end of the upper mold forming block and the upper end of the lower mold forming block are provided with semi-circular arc-shaped rotating die inserts.
[0009] Compared with the prior art, this utility model uses a structure in which a punch rotates in a die insert via a gear to twist and bend the material. The rotation angle can be adjusted according to the actual product requirements to meet the forming needs of products with various complex angles. It ensures the precise movement of the twisting punch, avoids unstable forming, and integrates twisting forming into a single mold. This results in low cost, fewer processes, less space occupation, flexibility, practicality, easy debugging, and stable mass production. Attached Figure Description
[0010] Figure 1 A schematic diagram of the cross-sectional structure of a torsion forming mold;
[0011] Figure 2 This is a three-dimensional view of the mounting bracket.
[0012] Figure 3 This is a cross-sectional structural diagram of the fixed base section;
[0013] Figure 4 This is an exploded view of the mounting bracket section;
[0014] See Figures 1 to 4 1. Mold handle, 2. Guide post, 3. Guide sleeve, 4. Upper mold base, 5. Upper pad, 6. Upper mold clamping plate, 7. Stop plate, 8. Stripper plate, 9. Lower mold plate, 10. Lower pad, 11. Lower mold base, 12. Guide post fixing block, 13. Lower pad foot, 14. Positioning pin, 15. Pressure block, 16. Lower mold forming block, 17. Upper mold forming block, 18. Lower mold insert, 19. Torque punch, 20. Material, 21. Fixed base, 22. Transmission pull gear, 23. Large gear, 24. Small gear, 25. Cylinder 1, 26. Fixed plate 1, 27. Support plate, 28. Cylinder 2, 29. Fixed plate 2, 30. Transmission gear, 31. Fixed shim 1, 32. Transmission shaft, 33. Fixed sleeve, 34. Fixed shim 2. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] like Figure 1A continuous torsion forming die includes an upper die base 4 and a lower die base 11. The lower end of the upper die base 4 is provided with an upper pad 5, and the lower end of the upper pad 5 is provided with an upper die clamping plate 6. The lower end of the upper die clamping plate 6 is provided with a stop plate 7, and the lower end of the stop plate 7 is provided with a stripper plate 8, a pressure block 15, and an upper die forming block 17. The upper end of the lower die base 11 is provided with a lower pad 10, and the upper end of the lower pad 10 is provided with a lower template 9, a lower die insert 18, and a lower die forming block 16. The stripper plate 8 is provided with a positioning pin 14, and the lower pad 10 is provided with a positioning hole that mates with the positioning pin 14. A support plate 27 is provided on one side of the lower pad 10, and a fixed seat 21 is provided on the support plate 27. A transmission pull tooth 22 is provided inside the fixed seat 21, and one end of the transmission pull tooth 22 is connected to the output shaft of a cylinder 25. A fixed plate 29 is provided on one side of the cylinder 25. The lower end of 29 is connected to the lower mold base 11. The fixed base 21 has two through holes. The transmission shaft 32 is located in one of the through holes of the fixed base 21. The transmission shaft 32 is fitted with a large gear 23, a first fixed shim 31, a transmission gear 30 and a second fixed shim 34 in sequence. The other through hole of the fixed base 21 is provided with a fixed sleeve 33. The fixed sleeve 33 is provided with a small gear 24. One end of the small gear 24 is provided with the output shaft of the second cylinder 28. The end of the second cylinder 28 is connected to a first fixed plate 26. One side of the first fixed plate 26 is connected to one side of the support plate 27. The other end of the small gear 24 is connected to one end of the torsion punch 19. The other end of the torsion punch 19 is located in the lower mold insert 18. The transmission gear 30 and the transmission pull gear 22 are meshed with each other. The small gear 24 and the large gear 23 are meshed with each other.
[0017] The upper end of the upper mold base 4 is connected to the mold handle 1 through a fixing component.
[0018] The lower end of the upper mold base 4 is fixed with several guide pillars 2, and the upper end of the lower mold base 11 is provided with several guide pillar fixing blocks 12 with corresponding structures at the corresponding positions of the guide pillars 2.
[0019] Several lower pads 13 are connected to the lower end of the lower mold base 11.
[0020] The lower end of the upper mold forming block 17 and the upper end of the lower mold forming block 16 are provided with semi-circular arc-shaped rotating die inserts. The material 20 rotates in the semi-circular arc-shaped forming block cavity, and torsion forming is achieved by the torsion punch 19.
[0021] In use, the positioning pin 14 first guides the product process strip, and then the pressure block 15 applies pressure to the material 20. At this time, while cylinder 1 25 pulls backward, cylinder 2 28 pushes forward, and the twisting punch 19 is driven by the large gear 23 and the small gear 24 to rotate in the direction of cylinder 1 25, thereby clamping the material 20 and twisting it to the right for shaping. The twisting angle can be adjusted according to the springback of the product shape. Cylinder 1 25 and cylinder 2 28 move in opposite directions to achieve automatic unloading and avoid mold damage.
Claims
1. A continuous torsion forming die, comprising an upper die base (4) and a lower die base (11), characterized in that: The upper mold base (4) is provided with an upper pad plate (5) at its lower end, and an upper mold clamping plate (6) is provided at the lower end of the upper pad plate (5). A stop plate (7) is provided at the lower end of the upper mold clamping plate (6). A stripper plate (8), a pressure block (15), and an upper mold forming block (17) are provided at the lower end of the stop plate (7). The lower mold base (11) is provided with a lower pad plate (10) at its upper end, and a lower template plate (9), a lower mold insert (18), and a lower mold forming block (16) are provided at the upper end of the lower pad plate (10). The stripper plate (8) is located inside the stripper plate (8). A positioning pin (14) is provided, and a positioning hole that mates with the positioning pin (14) is provided in the lower pad (10). A support plate (27) is provided on one side of the lower pad (10), and a fixed seat (21) is provided on the support plate (27). A transmission pull tooth (22) is provided in the fixed seat (21). One end of the transmission pull tooth (22) is connected to the output shaft of cylinder one (25). A fixed plate two (29) is provided on one side of cylinder one (25). The lower end of the fixed plate two (29) is connected to the lower mold base. (11) Connection, the fixed seat (21) has two through holes. The drive shaft (32) is located in one of the through holes of the fixed seat (21). The drive shaft (32) is fitted with a large gear (23), a first fixed shim (31), a drive gear (30) and a second fixed shim (34) in sequence. The other through hole of the fixed seat (21) is fitted with a fixed sleeve (33). The fixed sleeve (33) is fitted with a small gear (24). One end of the small gear (24) is fitted with the output shaft of the second cylinder (28). The end of the second cylinder (28) is connected to the first fixed plate (26). One side of the first fixed plate (26) is connected to one side of the support plate (27). The other end of the small gear (24) is connected to one end of the torsion punch (19). The other end of the torsion punch (19) is located in the lower die insert (18). The drive gear (30) and the drive pull tooth (22) mesh with each other. The small gear (24) and the large gear (23) mesh with each other.
2. The continuous torsion forming die according to claim 1, characterized in that: The upper end of the upper mold base (4) is connected to the mold handle (1) through a fixing member.
3. The continuous torsion forming die according to claim 1, characterized in that: The lower end of the upper mold base (4) is fixed with several guide pillars (2), and the upper end of the lower mold base (11) is provided with several guide pillar fixing blocks (12) with matching structures at the corresponding positions of the guide pillars (2).
4. The continuous torsion forming die according to claim 1, characterized in that: The lower end of the lower mold base (11) is connected to several lower pads (13).
5. A continuous torsion forming die according to claim 1, characterized in that: The lower end of the upper mold forming block (17) and the upper end of the lower mold forming block (16) are provided with a semi-circular arc-shaped rotating die insert.