Pressure balance structure of multi-station die

Abstract

The utility model relates to the technical field of stamping dies, and particularly discloses a pressure balancing structure of a multi-station die, which comprises a support frame body, a lower die holder fixedly connected to the upper surface of the support frame body, a lower die fixedly mounted on the upper surface of the lower die holder, and an upper support plate fixedly connected to the upper surface of the support frame body, a transmission air cylinder is fixedly connected to the upper surface of the upper supporting plate, and the output end of the transmission air cylinder penetrates through the upper surface of the upper supporting plate and is fixedly connected with an upper die base. According to the pressure balance structure of the multi-station die, the positions of the lower insert block and the upper insert block can be flexibly adjusted by adjusting the limiting mechanism, the layout of the insert blocks is changed and the stamping acting point is adjusted according to the offset condition of the die pressure center, so that the die pressure center tends to be consistent with the center of a punching machine, the unbalance loading of the die is reduced, the service life of the die is prolonged, and the precision of stamped parts is improved; and the defects of deviation, distortion and the like caused by non-uniform stress of the workpiece are avoided.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a pressure balance structure for a multi-station die. Background Technology

[0002] Aligning the pressure center with the press center is the "golden rule" of stamping. Its essence is to achieve synergistic optimization of equipment, mold, and product through mechanical balance. Ignoring this principle will lead to soaring costs and safety risks. If the pressure center does not coincide with the center line of the press slide, the mold will be subjected to unbalanced load, resulting in accelerated local wear of the mold guide mechanism and working parts, reducing the service life of the mold. If the pressure center is not in a proper position, the workpiece will be subjected to uneven force during stamping, resulting in deformation such as offset and twisting, affecting the dimensional accuracy and form and position tolerances of the workpiece. When the pressure center is aligned with the center of the press slide, the press will be subjected to uniform force, avoiding accelerated wear of components such as the slide and guide rail due to unbalanced load, reducing the occurrence of press failures, and extending the service life of the press.

[0003] In the existing stamping process, since the forming characteristics of the product are mainly concentrated in the front half of the die, the pressure center of the die is too far forward, causing the center of the punch press to be located behind the pressure center. This results in a significant misalignment between the two, making it difficult to align the pressure center with the center of the punch press. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure balance structure for a multi-station mold, so as to solve the problem mentioned in the background art that the forming characteristics of the product are mainly concentrated in the front half of the mold, resulting in the pressure center of the mold being too far forward, while the center of the punch press is located behind the pressure center, making it difficult to achieve alignment between the pressure center and the center of the punch press.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure balancing structure for a multi-station mold, comprising a support frame, a lower mold base fixedly connected to its upper surface, a lower mold fixedly mounted on the upper surface of the lower mold base, an upper support plate fixedly connected to the upper surface of the support frame, a transmission cylinder fixedly connected to the upper surface of the upper support plate, the output end of the transmission cylinder penetrating the upper surface of the upper support plate and fixedly connected to the upper mold base, an upper mold fixedly connected to the lower surface of the upper mold base, and a waste collection device penetrating the surface of the lower mold base. The lower and upper molds are provided with adjustment slots on their side surfaces. The inner wall of the adjustment slot is provided with an installation cavity. The inner wall of the installation cavity is provided with a transmission gear. A linkage cylinder is fixedly connected between the two transmission gears. An adjustment shaft is fixedly connected to the shaft of one of the transmission gears. An adjustment limiting mechanism is provided between the adjustment slot and the installation cavity. The adjustment limiting mechanism drives the two transmission gears to rotate through the adjustment shaft and the linkage cylinder, thereby driving the limiting gear and the limiting screw to rotate and controlling the support cylinder and the locking clamp to limit the lower and upper inserts.

[0006] Preferably, the upper mold base and the support frame are slidably connected, the waste collection trough is bucket-shaped, and the waste collection trough is connected to the lower mold.

[0007] The above technical solution features a hopper-shaped waste collection trough connected to the lower mold. The hopper-shaped design facilitates the natural sliding and collection of waste, while the connected structure allows the waste generated during stamping to fall directly into the collection trough, preventing waste from accumulating inside the mold and affecting stamping operations and mold lifespan. This reduces the frequency of cleaning mold waste and improves production efficiency.

[0008] Preferably, the adjustment slot is a strip design, the lower mounting cavity penetrates the lower surface of the lower mold, and the lower mounting cavity is connected to the waste collection trough.

[0009] The above technical solution is adopted, with the lower installation cavity penetrating the lower surface of the mold and connected to the waste collection tank. On the one hand, it facilitates the installation and maintenance of components such as transmission gears in the installation cavity, and on the other hand, it ensures that waste can smoothly enter the waste collection tank from the installation cavity.

[0010] Preferably, the transmission gears are rotatably connected to the mounting cavity, and the two transmission gears are symmetrically arranged. The linkage cylinder is coaxial with the transmission gears, and one end of each of the two adjustment shafts passes through the front surface of the lower mold and the upper mold, respectively.

[0011] With the above technical solution, one end of each of the two adjusting shafts passes through the front surface of the lower mold and the upper mold, respectively, which allows the operator to rotate and adjust the shafts from outside the mold, thereby controlling the rotation of the transmission gears and realizing convenient operation of the internal adjustment and limiting mechanism of the mold.

[0012] Preferably, the adjustment limiting mechanism includes a limiting gear, which is disposed above the transmission gear. One end of the rotating shaft of the limiting gear is fixedly connected to a limiting screw. A supporting cylinder is installed on the outer surface of the limiting screw. One end of the supporting cylinder is fixedly connected to a locking clamp. A lower insert is provided in the lower adjustment slot, and an upper insert is provided in the upper adjustment slot.

[0013] By adopting the above technical solution, the transmission gear drives the limit gear to rotate, and the limit gear drives the limit screw to rotate, so that the support cylinder and the locking clamping plate can move, thereby realizing the limiting and fixing or adjusting position of the lower and upper inserts, providing a key adjustment means for balancing the pressure center of the mold.

[0014] Preferably, the limiting gear is rotatably connected to the mounting cavity, and the limiting gear is meshing with the transmission gear.

[0015] By adopting the above technical solution, the limiting gear and the transmission gear form a meshing connection, so that the rotation of the transmission gear can be stably transmitted to the limiting gear, ensuring the accuracy of the power transmission of the adjusting limiting mechanism, thereby precisely controlling the limiting action of the locking clamp on the insert and improving the accuracy of mold adjustment.

[0016] Preferably, the limiting screw and the supporting cylinder are threaded together, the locking clamp and the mounting cavity are slidably connected, the locking clamp penetrates the inner wall of the adjusting slot, the surface of the lower insert is provided with a slot, and the lower surface of the upper insert is provided with a protrusion corresponding to the lower insert.

[0017] Using the above technical solution, the limiting screw and the supporting cylinder form a threaded connection. The rotation of the limiting screw is converted into the linear movement of the supporting cylinder through threaded transmission, thereby achieving precise adjustment of the position of the locking plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the pressure balance structure of the multi-station mold:

[0019] 1. By adjusting the limiting mechanism, the positions of the lower and upper inserts can be flexibly adjusted. According to the offset of the mold pressure center, the layout of the inserts can be changed to adjust the stamping force point, so that the mold pressure center and the press center are more consistent, reducing mold off-center load, extending mold service life, improving the accuracy of stamped parts, and avoiding defects such as offset and twisting of workpieces due to uneven force.

[0020] 2. The adjusting shaft passes through the front surfaces of the lower mold and the upper mold. The operator can directly rotate the adjusting shaft outside the mold. The linkage cylinder drives the transmission gear to rotate, which in turn drives the limit gear and the limit screw to adjust the locking clamp. The operation is simple, saves adjustment time, and improves work efficiency.

[0021] 3. The transmission gears are rotatably connected to the mounting cavity. The two transmission gears are symmetrically arranged and coaxially connected by a linkage cylinder to ensure stable power transmission. The limit gears are meshed with the transmission gears, the limit screws are threadedly connected to the support cylinders, and the locking clamps are slidably connected to the mounting cavity. These structures work together to make the adjustment process precise and reliable, ensuring accurate limit and position adjustment of the inserts and improving the overall performance of the mold. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the connection between the support frame and the lower mold base of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the connection between the lower mold base and the lower mold of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the connection between the lower mold and the adjusting slot of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the connection between the lower mold base and the waste collection trough of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the connection between the transmission gear and the linkage cylinder of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the connection between the limiting gear and the limiting screw of this utility model.

[0028] In the diagram: 1. Support frame; 2. Lower mold base; 3. Lower mold; 4. Upper support plate; 5. Transmission cylinder; 6. Upper mold base; 7. Upper mold; 8. Waste collection trough; 9. Adjustment slot; 10. Installation cavity; 11. Transmission gear; 12. Linkage cylinder; 13. Adjustment shaft; 14. Limit gear; 15. Limit screw; 16. Support cylinder; 17. Locking clamp; 18. Lower insert; 19. Upper insert. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-6This utility model provides a technical solution: a pressure balancing structure for a multi-station mold, including a support frame 1, a lower mold base 2, a lower mold 3, an upper support plate 4, a transmission cylinder 5, an upper mold base 6, an upper mold 7, a waste collection trough 8, an adjustment slot 9, an installation cavity 10, a transmission gear 11, a linkage cylinder 12, an adjustment shaft 13, a limit gear 14, a limit screw 15, a support cylinder 16, a locking clamping plate 17, a lower insert 18, and an upper insert 19. The support frame 1 has the lower mold base 2 fixedly connected to its upper surface. The lower mold 3 is fixedly installed on the upper surface of the mold base 2. The upper mold base 6 and the support frame 1 are slidably connected. The waste collection trough 8 is designed in the shape of a bucket and is connected to the lower mold 3. When working, the transmission cylinder 5 is started. When the output end extends, it pushes the upper mold base 6 connected to it to move downward. Because the upper mold base 6 is slidably connected to the support frame 1, it can ensure that it moves downward smoothly, driving the upper mold 7 to approach the lower mold 3 and complete the mold closing action. When the output end retracts, the upper mold base 6 moves upward and the upper mold 7 moves away from the lower mold 3, realizing the mold opening.

[0031] An upper support plate 4 is fixedly connected to the upper surface of the support frame 1. A transmission cylinder 5 is fixedly connected to the upper surface of the upper support plate 4. The output end of the transmission cylinder 5 passes through the upper surface of the upper support plate 4 and is fixedly connected to an upper mold base 6. An upper mold 7 is fixedly connected to the lower surface of the upper mold base 6. A waste collection groove 8 is installed through the surface of the lower mold base 2. The adjusting slot 9 is a strip design. The lower mounting cavity 10 passes through the lower surface of the lower mold 3 and is connected to the waste collection groove 8. The transmission gear 11 is rotatably connected to the mounting cavity 10, and the two transmission gears 11 are symmetrically arranged. The linkage cylinder 12 is coaxially arranged with the transmission gear 11. One end of each of the two adjusting shafts 13 passes through the front surface of the lower mold 3 and the upper mold 7, respectively.

[0032] Both the lower mold 3 and the upper mold 7 have adjustment slots 9 on their side surfaces. The inner wall of the adjustment slot 9 has an installation cavity 10. A transmission gear 11 is installed on the inner wall of the installation cavity 10. A linkage cylinder 12 is fixedly connected between the two transmission gears 11. An adjustment shaft 13 is fixedly connected to the shaft of one transmission gear 11. The adjustment limiting mechanism includes a limiting gear 14, which is positioned above the transmission gear 11. A limiting screw 15 is fixedly connected to one end of the shaft of the limiting gear 14. A support cylinder 16 is installed on the outer surface of the limiting screw 15. A locking clamp 17 is fixedly connected to one end of the support cylinder 16. The lower adjustment... The section slot 9 is provided with a lower insert 18, and the upper adjustment slot 9 is provided with an upper insert 19. When it is necessary to adjust the mold pressure center, the adjustment shaft 13 is rotated. The adjustment shaft 13 is fixedly connected to the shaft of the transmission gear 11 on one side. Therefore, the rotation of the adjustment shaft 13 will drive the transmission gear 11 to rotate. The two transmission gears 11 are fixedly connected by the linkage cylinder 12 and are symmetrically arranged, so that the two transmission gears 11 rotate synchronously through the linkage cylinder 12. When the transmission gear 11 rotates, it drives the limit gear 14 to rotate. One end of the shaft of the limit gear 14 is fixedly connected to the limit screw 15. The rotation of the limit gear 14 will cause the limit screw 15 to rotate.

[0033] An adjustment limiting mechanism is provided between the adjustment slot 9 and the mounting cavity 10. This mechanism, through the adjustment shaft 13 and the linkage cylinder 12, drives two transmission gears 11 to rotate, thereby driving the limiting gear 14 and the limiting screw 15 to rotate. This controls the support cylinder 16 and the locking clamp 17 to limit the lower insert 18 and the upper insert 19. The limiting gear 14 is rotatably connected to the mounting cavity 10 and meshing with the transmission gears 11. The limiting screw 15 is threadedly connected to the support cylinder 16. The locking clamp 17 is slidably connected to the mounting cavity 10 and penetrates the inner wall of the adjustment slot 9. The lower insert 18 has a slot on its surface, and the upper insert 19 has a protrusion on its lower surface corresponding to the lower insert 18. The limiting screw 15 is threadedly connected to the supporting cylinder 16. When the limiting screw 15 rotates, the supporting cylinder 16 will move linearly on the limiting screw 15. The linear movement of the supporting cylinder 16 drives the locking clamp 17 to slide in the adjusting slot 9. The upper and lower locking clamps 17 limit the lower insert 18 and the upper insert 19 respectively. By changing the position of the lower insert 18 and the upper insert 19, the stress on each part during die stamping is adjusted, thereby adjusting the pressure center of the die and aligning it with the center of the punch press.

[0034] Working principle: When using the pressure balance structure of this multi-station mold, the transmission cylinder 5 drives the upper mold base 6 to slide along the support frame 1. The upper mold 7 approaches the lower mold 3 to complete the mold closing and stamping action. When the output end retracts, the upper mold base 6 moves upward to open the mold. Rotating the adjustment shaft 13 drives the two transmission gears 11 to rotate. The transmission gears 11 drive the limit gear 14 to rotate. The limit gear 14 rotates through the limit screw 15, causing the support cylinder 16 and the locking clamp 17 to slide in the adjustment slot 9. This allows the locking clamp 17 to limit the lower insert 18 and the upper insert 19, increasing the overall practicality.

[0035] 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 pressure balancing structure for a multi-station mold, comprising a support frame (1), on the upper surface of which a lower mold base (2) is fixedly connected, wherein a lower mold (3) is fixedly mounted on the upper surface of the lower mold base (2), characterized in that: An upper support plate (4) is fixedly connected to the upper surface of the support frame (1). A transmission cylinder (5) is fixedly connected to the upper surface of the upper support plate (4). The output end of the transmission cylinder (5) passes through the upper surface of the upper support plate (4), and an upper mold base (6) is fixedly connected to the output end of the transmission cylinder (5). An upper mold (7) is fixedly connected to the lower surface of the upper mold base (6). A waste collection groove (8) is installed through the surface of the lower mold base (2). Adjustment slots (9) are provided on the side surfaces of both the lower mold (3) and the upper mold (7). An installation cavity (10) is provided on the inner wall of the adjustment slot (9). The inner wall of the cavity (10) is provided with a transmission gear (11), and a linkage cylinder (12) is fixedly connected between the two transmission gears (11). An adjustment shaft (13) is fixedly connected to the shaft of one of the transmission gears (11). An adjustment limiting mechanism is provided between the adjustment slot (9) and the cavity (10). The adjustment shaft (13) and the linkage cylinder (12) drive the two transmission gears (11) to rotate, thereby driving the limiting gear (14) and the limiting screw (15) to rotate. The supporting cylinder (16) and the locking clamp (17) limit the lower insert (18) and the upper insert (19).

2. The pressure balancing structure for a multi-station mold according to claim 1, characterized in that: The upper mold base (6) and the support frame (1) are slidably connected. The waste collection trough (8) is designed in the shape of a bucket and is connected to the lower mold (3).

3. The pressure balancing structure for a multi-station mold according to claim 1, characterized in that: The adjustment slot (9) is a strip design, and the mounting cavity (10) below penetrates the lower surface of the lower mold (3), and the mounting cavity (10) below is connected to the waste collection trough (8).

4. The pressure balancing structure for a multi-station mold according to claim 1, characterized in that: The transmission gear (11) is rotatably connected to the mounting cavity (10), and the two transmission gears (11) are symmetrically arranged. The linkage cylinder (12) is coaxially arranged with the transmission gear (11), and one end of the two adjustment shafts (13) passes through the front surface of the lower mold (3) and the upper mold (7) respectively.

5. The pressure balancing structure for a multi-station mold according to claim 1, characterized in that: The adjustment limiting mechanism includes a limiting gear (14), which is located above the transmission gear (11). One end of the shaft of the limiting gear (14) is fixedly connected to a limiting screw (15). A supporting cylinder (16) is installed on the outer surface of the limiting screw (15). One end of the supporting cylinder (16) is fixedly connected to a locking clamp (17). A lower insert (18) is provided in the lower adjustment slot (9), and an upper insert (19) is provided in the upper adjustment slot (9).

6. The pressure balancing structure for a multi-station mold according to claim 5, characterized in that: The limiting gear (14) is rotatably connected to the mounting cavity (10), and the limiting gear (14) is meshed with the transmission gear (11).

7. The pressure balancing structure for a multi-station mold according to claim 5, characterized in that: The limiting screw (15) and the supporting cylinder (16) are connected by a thread, the locking clamp (17) and the mounting cavity (10) are connected by a sliding connection, the locking clamp (17) penetrates the inner wall of the adjusting slot (9), the surface of the lower insert (18) is provided with a slot, and the lower surface of the upper insert (19) is provided with a protrusion corresponding to the lower insert (18).

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