Torsion mechanism in precise progressive die
By designing a torsion mechanism of precision continuous mold in the mold, using the synergistic effect of the above-mentioned multiple components, the problems of sliding the boundary between the material and the bumps during the mold forming process, forming instability and scratches on the surface of the material after forming are solved. , achieving more stable and efficient material torsion forming.
Patent Information
- Application Number
- CN202421246569.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
During the molding process, the torsion mechanism in the existing molds has problems such as slipping between the material and the bump, unstable forming, and scratches on the surface of the material after forming.
A torsion mechanism in a precision continuous mold is designed, using upper mold seat, lower mold seat, downward pressure block, press rod, torsional block, torsional block, floating block, floating spring, fixing table, torsional shaft , torsion groove, material discharge groove and torsion components, through the synergy of these components, the stable torsion forming of the material is achieved.
It improves the stability and reliability of material torsion molding, reduces scratches on the surface of the material after forming, and improves the effect of torsion molding.
Smart Images
Figure CN222428973U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a torsion mechanism in a precision continuous mold. Background Art
[0002] With the emergence of various connectors in automobiles, twist terminals are increasingly used in connectors, and such twist terminals are generally formed by pressing a twisting mechanism in a mold.
[0003] There is a common in-mold twisting mechanism in the related technology, which includes an upper mold base and a lower mold base, the upper mold base is vertically slidably arranged on the lower mold base, and a protrusion is fixedly arranged on each of the upper mold base and the lower mold base, and the two protrusions are offset in the vertical direction. When pressing and twisting the material, one end of the material is fixed, and the other end of the material is placed between the upper mold base and the lower mold base, and the upper mold base is driven close to the lower mold base. The protrusion of the upper mold presses against one side of the material from above the material, and the protrusion of the lower mold presses against the other side of the material from below the material, thereby applying reverse pressure to the dislocation on both sides of the material, forcing the material to twist and form.
[0004] In the process of implementing this application, it was found that there are at least the following problems in this technology: there is no pressing structure during the molding process, there is slippage between the material and the edge of the bump, which affects the stability and reliability of the molding process, and there are certain scratches on the surface of the material after molding, resulting in poor molding effect. Utility Model Content
[0005] In order to improve the stability and reliability of material torsion forming, reduce scratches on the surface of the material after forming, and improve the effect of torsion forming, the present application provides a torsion mechanism in a precision continuous mold.
[0006] The torsion mechanism in the precision continuous mold provided in the present application adopts the following technical solution:
[0007] The cam is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs.
[0008] By adopting the above technical scheme, when the material is twisted, one side of the material is placed on the floating block, and the other side extends out of the floating block and hangs in the air; the upper die seat is driven to approach the lower die seat for mold closing; during the mold closing process, the downward pressing block drives the pressing rod and the twisting connecting block to press down synchronously, the pressing rod presses against the material on the floating block, and one side of the material is clamped between the pressing rod and the floating block; then the downward pressing block continues to press down, the pressing rod and the floating block overcome the elastic force of the floating spring and drive the material downward together, and the side of the material hanging outside the floating block begins to enter the discharge trough until the floating block It moves downward to the bottom limit position; at this time, the twisting circle at the bottom of the twisting connecting block is inserted into the twisting groove, and the material is confined in the discharge groove. Finally, the twisting shaft is driven to rotate by the twisting component, and the twisting circle rotates around the twisting shaft in the twisting groove. The twisting circle forces the twisting connecting block to deflect. One side of the material is clamped between the pressing rod and the floating block, and the other side is twisted with the twisting shaft in the discharge groove, so that the material is twisted and formed. In this process, the stability and reliability of the material twisting forming are improved, the scratches on the surface of the material after forming are reduced, and the effect of twisting forming is improved.
[0009] Preferably, a limiting portion is fixedly provided at the bottom of the downward pressing block, and a side wall of the limiting portion is provided with an inclined surface, and the side wall of the torsion connecting block can abut against the inclined surface.
[0010] By adopting the above technical solution, when the torsion block deflects to abut against the inclined surface, the limit portion prevents the torsion block from continuing to deflect. At this time, the torsion round block can no longer continue to rotate in the torsion groove, thereby facilitating reliable limitation of the torsion degree of the material.
[0011] Preferably, a spring groove is formed on the side wall of the limiting portion, a thrust spring is arranged in the spring groove, one end of the thrust spring is connected to the bottom wall of the spring groove, and the other end of the thrust spring is connected to the side wall of the torsion connecting block, and the thrust spring drives the torsion connecting block away from the inclined surface.
[0012] By adopting the above technical solution, when the torsion round block is separated from the torsion groove, the thrust spring automatically stretches and recovers, and drives the torsion connecting block away from the inclined surface, thereby automatically resetting the torsion connecting block.
[0013] Preferably, the torsion assembly comprises a driving rod and a driving block, wherein the driving block is fixedly connected to the peripheral wall of the torsion shaft, the driving rod is fixedly arranged at the bottom of the upper mold base, and the driving rod can be abutted against the top of the driving block.
[0014] By adopting the above technical solution, when the torsion round block is inserted into the torsion groove, the driving rod just starts to contact with the driving block, and continues to drive the upper die base closer to the lower die base. The driving rod continues to move downward and presses against the driving block, and the driving block drives the torsion shaft to deflect, thereby realizing the rotational movement of the torsion shaft.
[0015] Preferably, a reset pin is slidably provided in the fixed platform, the top of the reset pin abuts against the bottom of the driving block, and a torsion spring is provided at the bottom of the reset pin, and the torsion spring drives the reset pin away from the lower die seat.
[0016] By adopting the above technical solution, when the driving rod is separated from the driving block, the torsion spring automatically extends and recovers, driving the reset pin to press against the bottom of the driving block and move upward, and the driving block drives the torsion shaft to rotate in the opposite direction and reset.
[0017] Preferably, the downward pressure block is slidably arranged at the bottom of the upper die seat, and a deceleration spring is arranged between the downward pressure block and the upper die seat, and the deceleration spring drives the downward pressure block away from the upper die seat.
[0018] By adopting the above technical solution, after the torsion circle is inserted into the torsion groove, the upper die seat is driven to continue to approach the lower die seat, but the downward pressure block cannot continue to move downward due to the influence of the pressure rod. At this time, the slow-action spring is deformed and compressed, thereby minimizing the obstruction of the downward pressure block to the continued downward movement of the upper die seat.
[0019] Preferably, the elastic coefficient of the slow-action spring is greater than the elastic coefficient of the floating spring.
[0020] By adopting the above technical solution, the floating material spring is more likely to deform than the slow-action spring, so that when the floating material block is pressed down to the limit position, the slow-action spring has room to continue to deform and compress.
[0021] Preferably, a return rod is slidingly provided at the bottom of the upper die seat, a return spring is provided at the top of the return rod, the return spring drives the return rod away from the upper die seat, a return portion is fixedly provided at the bottom of the return rod, a return groove is provided on the circumferential wall of the torsion shaft, and the return portion can be inserted into the return groove and resist against the return groove.
[0022] By adopting the above technical scheme, during the mold closing process, the anti-return rod is pressed down, and the anti-return part first abuts against the peripheral wall of the torsion shaft. When the torsion shaft starts to rotate, the torsion shaft prevents the anti-return rod from continuing to press down, the anti-return spring shrinks, and the anti-return part abuts against and slides on the peripheral wall of the torsion shaft. When the torsion shaft rotates to the torsion limit position, the anti-return groove rotates to the anti-return part, and the anti-return spring drives the anti-return part to insert into the anti-return groove. During the mold opening process, the driving rod moves upward with the upper mold seat to release the pressure on the driving block, and the torsion shaft has a tendency to twist back, and the slow-motion spring recovers before the floating spring, so that the material is still in the discharge groove. During the recovery process of the slow-motion spring, before the anti-return spring is fully recovered, the anti-return part prevents the torsion shaft from twisting back immediately, until the torsion round block is separated from the torsion groove, the formed material is separated from the discharge groove, and the anti-return spring and the anti-return rod bring the anti-return part out of the anti-return groove, thereby preventing the torsion shaft from driving the material to twist back, thereby improving the reliability of the torsion work.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By setting the upper die seat, lower die seat, downward pressing block, pressing rod, torsion connecting block, torsion round block, floating block, floating spring, fixed platform, torsion shaft, torsion groove, discharge groove, torsion assembly, the material is twisted and formed while pressing the two sides of the material, so as to improve the stability and reliability of the material twisting forming, reduce the scratches on the surface of the material after forming, and improve the effect of twisting forming;
[0025] 2. By setting the driving rod, driving block, reset pin and torsion spring, it is convenient to control the rotation of the torsion shaft, thereby realizing the automatic torsion and automatic reset driving of the torsion shaft;
[0026] 3. By setting the slow-motion spring, the anti-return rod, the anti-return part, the anti-return groove and the anti-return spring, the formed material is protected during the mold opening process to prevent the material from being immediately twisted back by the unloading torsion shaft, thereby improving the reliability of the torsion work. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a structural schematic diagram of a torsion mechanism in a precision continuous mold provided in an embodiment of the present application.
[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of a torsion mechanism in a precision continuous mold provided in an embodiment of the present application.
[0029] Figure 3 It is a schematic diagram of the relationship between the reaction resistance part and the resistance groove in the embodiment of the present application.
[0030] Explanation of the reference numerals in the accompanying drawings: 1. Upper die seat; 11. Downward pressure block; 111. Pressing rod; 112. Torsion connecting block; 1121. Torsion round block; 113. Limiting portion; 1131. Inclined surface; 1132. Spring groove; 1133. Thrust spring; 114. Slow-motion spring; 12. Anti-return rod; 121. Anti-return portion; 122. Anti-return spring; 2. Lower die seat; 21. Floating block; 212. Floating spring; 22. Fixed table; 221. Torsion shaft; 2211. Torsion groove; 2212. Discharge groove; 2213. Anti-return groove; 23. Reset pin; 3. Torsion assembly; 31. Drive rod; 32. Drive block. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-3 This application is described in further detail.
[0032] The present application embodiment discloses a torsion mechanism in a precision continuous mold. Figure 1 and Figure 2, which includes an upper die seat 1 and a lower die seat 2 arranged in a continuous die. A downward pressing block 11 is slidably arranged at the bottom of the upper die seat 1, and a slow-release spring 114 is arranged between the downward pressing block 11 and the upper die seat 1 for driving the downward pressing block 11 away from the upper die seat 1. A pressing rod 111 and a limiting portion 113 are fixedly arranged at the bottom of the downward pressing block 11, a torsion connecting block 112 is rotatably arranged at the bottom of the downward pressing block 11, and a torsion circular block 1121 is fixedly arranged at the bottom of the torsion block. A floating block 21 is slidably arranged on the lower die seat 2, the pressing rod 111 can abut against the floating block 21, and a floating spring 212 is arranged at the bottom of the floating block 21 for driving the floating block 21 away from the lower die seat 2, and the elastic coefficient of the slow-release spring 114 is greater than the elastic coefficient of the floating spring 212. A fixed platform 22 is fixedly arranged on the lower die seat 2, and a torsion shaft 221 that penetrates the fixed platform 22 is rotatably arranged in the fixed platform 22. A torsion groove 2211 is formed at one end of the torsion shaft 221 , and the torsion round block 1121 can be inserted into the torsion groove 2211 and twist and slide in the torsion groove 2211 . A material discharge groove 2212 is formed at the bottom of the torsion groove 2211 , and the material discharge groove 2212 is arranged at the axis center of the torsion shaft 221 .
[0033] Reference Figure 1 and Figure 2 , place the material strip on the floating material block 21, and the part of the material to be twisted extends out of the floating material block 21 and hangs in the air. Drive the upper die seat 1 downward, and the downward pressing block 11 drives the pressing rod 111 and the twisting connecting block 112 to press down synchronously, and the pressing rod 111 presses against the material strip. Then, the pressing rod 111 and the floating material block 21 clamp the material strip and move downward together until the floating material block 21 and the lower die seat 2 are tightly pressed. At this moment, the part of the material to be twisted enters the discharge groove 2212, and the twisting round block 1121 at the bottom of the twisting connecting block 112 is inserted into the twisting groove 2211, and the material is confined in the discharge groove 2212.
[0034] Reference Figure 1 and Figure 2 A torsion assembly 3 is arranged between the upper die seat 1 and the lower die seat 2. The torsion assembly 3 includes a driving rod 31 and a driving block 32. The driving block 32 is fixedly arranged on the peripheral wall of the torsion shaft 221. The driving rod 31 is fixedly arranged at the bottom of the upper die seat 1, and the driving rod 31 can abut against the top of the driving block 32. The upper die seat 1 continues to be driven downward, and the driving rod 31 abuts against the driving block 32 to move downward, and the driving block 32 drives the torsion shaft 221 to deflect. The torsion circular block 1121 rotates around the torsion shaft 221 in the torsion groove 2211, forcing the torsion connecting block 112 to deflect. One side of the material is clamped between the pressing rod 111 and the floating material block 21, and the other side is twisted with the torsion shaft 221 in the discharge groove 2212, so that the material is twisted and formed in a state where both ends are pressed, thereby improving the stability and reliability of the material torsion forming, reducing the scratches on the surface of the material after forming, and improving the effect of torsion forming.
[0035] In order to facilitate the automatic reset of the driving block 32 and the torsion connecting block 112, refer to Figure 1 and Figure 2 A reset pin 23 is slidably arranged in the fixed platform 22, and the top of the reset pin 23 abuts against the bottom of the driving block 32, and a torsion spring is arranged at the bottom of the reset pin 23 to drive the reset pin 23 away from the lower die seat 2. When the upper die seat 1 moves upward, as the driving rod 31 releases the abutment of the driving block 32, the torsion spring drives the reset pin 23 to move upward against the bottom of the driving block 32, and the driving block 32 drives the torsion shaft 221 to rotate in the opposite direction and reset. A limiting portion 113 is fixedly arranged at the bottom of the downward pressing block 11, and an inclined surface 1131 is provided on the side wall of the limiting portion 113, and the side wall of the torsion connecting block 112 can abut against the inclined surface 1131. A spring groove 1132 is provided on the side wall of the limiting portion 113, and a thrust spring 1133 is arranged in the spring groove 1132 to drive the torsion connecting block 112 away from the inclined surface 1131. After the torsion round block 1121 is separated from the torsion groove 2211 , the thrust spring 1133 drives the torsion connecting block 112 away from the inclined surface 1131 , so that the torsion connecting block 112 is automatically reset.
[0036] In order to prevent the torsion shaft 221 from causing the material to twist back during the mold opening process, refer to Figures 1 to 3 , a return rod 12 is slidably provided at the bottom of the upper die base 1, a return spring 122 is provided at the top of the return rod 12 to drive the return rod 12 away from the upper die base 1, and a return portion 121 is fixedly provided at the bottom of the return rod 12. A return groove 2213 that is adapted to the return portion 121 is provided on the peripheral wall of the torsion shaft 221, and the return portion 121 can be inserted into the return groove 2213 and abut against the return groove 2213. During the mold closing process, the return rod 12 is pressed down, the torsion shaft 221 prevents the return rod 12 from continuing to press down, and the return spring 122 retracts. When the torsion shaft 221 rotates to the limit position, the return portion 121 is inserted into the return groove 2213. During the mold opening process, the torsion shaft 221 has a tendency to twist back, and the slow-motion spring 114 recovers before the floating spring 212, so that the molding material is still in the discharge groove 2212. Before the torsion block 1121 is separated from the torsion groove 2211, the return block 121 prevents the torsion shaft 221 from twisting back immediately. After the torsion block 1121 is separated from the torsion groove 2211, the formed material is separated from the discharge groove 2212, the return spring 122 is fully restored, and the return rod 12 brings the return block 121 out of the return groove 2213, thereby preventing the torsion shaft 221 from driving the material to twist back.
[0037] The implementation principle of the torsion mechanism in a precision continuous mold of the embodiment of the present application is as follows: during the mold closing process, the upper mold base 1 is driven downward, the pressure rod 111 first presses the material strip, and the return portion 121 on the return rod 12 begins to make preliminary contact with the torsion shaft 221. The upper mold base 1 continues to move downward, and the pressure rod 111 and the floating material block 21 clamp the material strip and move downward together until the floating material block 21 is tightly pressed against the lower mold base 2. At this moment, the part of the material to be twisted enters the discharge groove 2212, the twisting round block 1121 at the bottom of the twisting connecting block 112 is inserted into the twisting groove 2211, the material is confined in the discharge groove 2212, and the driving rod 31 makes preliminary contact with the driving block 32. The upper die seat 1 continues to move downward, the driving rod 31 pushes against the driving block 32 to move downward, the torsion shaft 221 deflects, the torsion round block 1121 rotates around the torsion shaft 221 in the torsion groove 2211, forcing the torsion connecting block 112 to deflect, and the material is clamped between the pressing rod 111 and the floating material block 21 on one side, and twisted with the torsion shaft 221 in the discharge groove 2212 on the other side. When the torsion shaft 221 rotates to the limit position, the return block 121 is inserted into the return block 2213. During the mold opening process, the upper die seat 1 moves upward, and the return block 121 prevents the torsion shaft 221 from twisting back immediately, until the torsion round block 1121 is separated from the torsion groove 2211, and the molded material is separated from the discharge groove 2212, at which time the return spring 122 is fully restored. The upper die seat 1 moves upward in a rectangular shape, and the resistance part 121 is brought out from the resistance groove 2213. The return spring drives the reset pin 23 to press against the bottom of the driving block 32 and move upward, and the driving block 32 drives the torsion shaft 221 to rotate in the opposite direction and reset. In this way, the material is twisted and formed in a state where both ends are pressed tightly, which improves the stability and reliability of the material twisting forming, reduces the scratches on the surface of the material after forming, and improves the effect of twisting forming.
[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A torsion mechanism in a precision progressive die, comprising an upper die base (1) and a lower die base (2), wherein the upper die base (1) is vertically slidably arranged on the lower die base (2), characterized in that: A downward pressing block (11) is arranged below the upper die seat (1), a pressing rod (111) is fixedly arranged at the bottom of the downward pressing block (11), a torsion connecting block (112) is rotatably arranged at the bottom of the downward pressing block (11), a torsion circular block (1121) is fixedly arranged at the bottom of the torsion connecting block (112), a floating block (21) is slidably arranged on the lower die seat (2), the pressing rod (111) can abut against the floating block (21), a floating spring (212) is arranged between the bottom of the floating block (21) and the lower die seat (2), and the floating spring (212) is used to drive the floating block (21) away from the lower die seat ( 2), a fixed platform (22) is fixedly arranged on the lower die base (2), a torsion shaft (221) is rotatably arranged in the fixed platform (22), a torsion groove (2211) is provided at one end of the torsion shaft (221), a material groove (2212) is opened at the bottom of the torsion groove (2211), the material discharge groove (2212) is located at the center of the torsion shaft (221), the torsion round block (1121) can be inserted into the torsion groove (2211) and torsionally slide in the torsion groove (2211), and a torsion component (3) for driving the torsion shaft (221) to rotate is arranged between the upper die base (1) and the lower die base (2).
2. The torsion mechanism in a precision progressive mold according to claim 1, characterized in that: A limiting portion (113) is fixedly provided at the bottom of the downward pressing block (11), and a side wall of the limiting portion (113) is provided with an inclined surface (1131), and the side wall of the torsion connecting block (112) can abut against the inclined surface (1131).
3. The torsion mechanism in a precision progressive mold according to claim 2, characterized in that: A spring groove (1132) is provided on the side wall of the limiting portion (113), and a thrust spring (1133) is arranged in the spring groove (1132). One end of the thrust spring (1133) is connected to the bottom wall of the spring groove (1132), and the other end of the thrust spring (1133) is connected to the side wall of the torsion connecting block (112). The thrust spring (1133) drives the torsion connecting block (112) away from the inclined surface (1131).
4. The torsion mechanism in a precision progressive mold according to claim 1, characterized in that: The torsion assembly (3) comprises a driving rod (31) and a driving block (32); the driving block (32) is fixedly connected to the peripheral wall of the torsion shaft (221); the driving rod (31) is fixedly arranged at the bottom of the upper die seat (1); and the driving rod (31) can abut against the top of the driving block (32).
5. The torsion mechanism in a precision progressive mold according to claim 4, characterized in that: A reset pin (23) is slidably arranged inside the fixed platform (22), the top of the reset pin (23) abuts against the bottom of the driving block (32), and a torsion spring is arranged at the bottom of the reset pin (23), and the torsion spring drives the reset pin (23) away from the lower die seat (2).
6. The torsion mechanism in a precision progressive mold according to claim 1, characterized in that: The downward pressing block (11) is slidably arranged at the bottom of the upper die seat (1), and a deceleration spring (114) is arranged between the downward pressing block (11) and the upper die seat (1), and the deceleration spring (114) drives the downward pressing block (11) away from the upper die seat (1).
7. The torsion mechanism in a precision progressive mold according to claim 6, characterized in that: The elastic coefficient of the slow-motion spring (114) is greater than the elastic coefficient of the floating material spring (212).
8. The torsion mechanism in a precision progressive mold according to claim 7, characterized in that: A return rod (12) is slidably provided at the bottom of the upper die seat (1), a return spring (122) is provided at the top of the return rod (12), the return spring (122) drives the return rod (12) away from the upper die seat (1), a return portion (121) is fixedly provided at the bottom of the return rod (12), a return groove (2213) is provided on the peripheral wall of the torsion shaft (221), and the return portion (121) can be inserted into the return groove (2213) and abut against the return groove (2213).