Punching die for middle way of booster rear housing
Patent Information
- Application Number
- CN202522652373.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-12-15
AI Technical Summary
但是由于经多道冲压加工，各道冲压的误差累积后使得成品上表面的零件平面度达不到设定要求
由于压料下成型块外沿对应于工件上平面与上部斜面的交接处；上成型块中部设有避让中部成型块的中部通孔，上成型块的成型面包括成型工件上部斜面的斜面部以及成型工件侧面的外周部；冲压加工时以斜面进行整体压料，此工序整圈无其它形面，降低了成型面的加工难度，可以有效确保成型的精度，且压料下成型块底面两侧分别设有L形的限位导向钩，限位导向钩的外沿超出压料下成型块外侧面，限位导向钩与导向槽相配合，下模座在两个导向槽旁分别设有一个倒L形的与限位导向钩外沿相配合的限位块，可以在极小的空间中实现可靠导向，进一步保证加工精度的同时，降低了加工制造成本。
Smart Images
Figure CN224879130U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to stamping dies, specifically to a middle stamping die for the rear housing of a power booster. Background Technology
[0002] The booster's rear housing requires the sheet metal to be initially formed by progressively stamping it through multiple dies. Then, the middle stamping die shapes the upper slope and sides of the housing. Finally, several dies perform surface platform forming, punching, and trimming to obtain the finished product. However, due to the multiple stamping processes, the accumulated errors from each stamping stage cause the flatness of the finished product's upper surface to fail to meet the set requirements. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a middle stamping mold for the rear shell of a booster with good finished product quality.
[0004] To solve the above technical problems, the technical solution adopted by this utility model is as follows: a middle stamping forming mold for the rear housing of the booster, including an upper mold and a lower mold. The upper mold includes an upper mold base, and the lower mold includes a lower mold base. An annular seat is provided on the lower mold base, and a mounting seat is provided in the annular seat. A punch seat is provided in the middle of the mounting seat, and a punching punch is provided on the punch seat. The mounting base has a pair of symmetrical guide grooves, and the lower mold base has a pair of nitrogen springs extending out of the mounting base. The nitrogen springs are connected to the pressure material forming block movably mounted on the mounting base. The bottom surface of the pressure material forming block has L-shaped limiting guide hooks on both sides, with the outer edge of the limiting guide hooks extending beyond the outer surface of the pressure material forming block. The limiting guide hooks cooperate with the guide grooves. The lower mold base has an inverted L-shaped limiting block next to each of the two guide grooves, which cooperates with the outer edge of the limiting guide hook. The upper mold base is provided with an upper mold mounting plate, the upper mold mounting plate is provided with a central forming block, the central forming block is provided with a punching die button, the upper forming block is movably mounted on the upper mold base, and the upper mold base is provided with several upper nitrogen springs that push against the upper forming block; the outer edge of the lower forming block corresponds to the intersection of the upper plane and the upper inclined plane of the workpiece; the middle of the upper forming block is provided with a central through hole to avoid the central forming block, and the forming surface of the upper forming block includes the inclined part of the upper inclined plane of the workpiece and the outer periphery of the side of the workpiece.
[0005] As a preferred embodiment, the lower mold base has four lower mold closing limit posts evenly distributed around the annular seat; the upper mold base has four upper mold closing limit posts that cooperate with the lower mold closing limit posts.
[0006] As a preferred embodiment, the limiting guide hook is provided with a through mounting hole, and the mounting base is provided with a connecting threaded hole, through which the locking screw passes and connects.
[0007] As a preferred embodiment, the upper mold base is movably provided with at least two movable guide limit rods, the ends of which are connected to the upper forming block.
[0008] As a preferred embodiment, each of the four corners of the lower mold base is provided with a mold closing guide seat, and each of the four corners of the upper mold base is provided with a mold closing guide post that cooperates with the mold closing guide seat.
[0009] The beneficial effects of this utility model are: Because the outer edge of the lower forming block corresponds to the intersection of the upper plane and the upper inclined plane of the workpiece; the middle of the upper forming block is provided with a through hole to avoid the middle forming block; the forming surface of the upper forming block includes the inclined part of the upper inclined plane of the workpiece and the outer periphery of the side of the workpiece; the entire material is pressed by the inclined plane during stamping. There are no other shaped surfaces in this process, which reduces the processing difficulty of the forming surface and can effectively ensure the forming accuracy. In addition, L-shaped limiting guide hooks are provided on both sides of the bottom surface of the lower forming block. The outer edge of the limiting guide hook extends beyond the outer side of the lower forming block. The limiting guide hook cooperates with the guide groove. The lower die base is provided with an inverted L-shaped limiting block that cooperates with the outer edge of the limiting guide hook next to the two guide grooves. Reliable guidance can be achieved in a very small space, which further ensures the processing accuracy while reducing the processing and manufacturing cost.
[0010] Because the lower mold base has four mold closing lower limit posts evenly distributed around the annular seat; and the upper mold base has four mold closing upper limit posts that cooperate with the mold closing lower limit posts, the reliability of product processing quality is further ensured by ensuring the accuracy of mold closing.
[0011] Because at least two movable guide rods are movably arranged in the upper mold base, and the ends of the guide rods are connected to the upper forming block, the movement of the upper forming block is more stable.
[0012] Since each of the four corners of the lower mold base is provided with a mold closing guide seat, and each of the four corners of the upper mold base is provided with a mold closing guide post that cooperates with the mold closing guide seat, the accuracy of mold closing is further guaranteed, and the reliability of product processing quality is further ensured. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the lower mold structure.
[0014] Figure 2 This is a schematic diagram of the upper mold structure.
[0015] In the diagram: 1 Upper mold base, 2 Lower mold base, 3 Ring seat, 4 Mounting seat, 5 Punch seat, 6 Punching punch, 7 Guide groove, 8 Nitrogen spring, 9 Pressing material lower forming block, 10 Limiting guide hook, 11 Limiting block, 12 Upper mold mounting plate, 13 Middle forming block, 14 Punching die button, 15 Upper forming block, 16 Upper nitrogen spring, 17 Middle through hole, 18 Locking screw, 19 Limiting guide rod, 20 Lower mold closing limit post, 21 Upper mold closing limit post, 22 Mold closing guide seat, 23 Mold closing guide post. Detailed Implementation
[0016] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.
[0017] like Figure 1-2 As shown, the middle stamping die for the rear housing of the booster includes an upper die and a lower die. The upper die includes an upper die base 1, and the lower die includes a lower die base 2. The lower die base 2 is provided with an annular seat 3, and the annular seat 3 is provided with a mounting seat 4. The mounting seat 4 is provided with a punch seat 5 in the middle, and the punch seat 5 is provided with a punching punch 6.
[0018] The mounting base 4 has a pair of symmetrical guide grooves 7, and the lower mold base 2 has a pair of nitrogen springs 8 that extend out of the mounting base 4. The nitrogen springs 8 are connected to the pressure material forming block 9 that is movably mounted on the mounting base 4. The pressure material forming block 9 has L-shaped limiting guide hooks 10 on both sides of its bottom surface. The outer edge of the limiting guide hook 10 extends beyond the outer side of the pressure material forming block 9. The limiting guide hook 10 cooperates with the guide grooves 7. The lower mold base 2 has an inverted L-shaped limiting block 11 next to each of the two guide grooves 7, which cooperates with the outer edge of the limiting guide hook 10. The limiting guide hook 10 has a through mounting hole, and the mounting base 4 has a connecting threaded hole. The locking screw 18 passes through the mounting hole and connects to the connecting threaded hole.
[0019] The upper mold base 1 is provided with an upper mold mounting plate 12, and the upper mold mounting plate is provided with a central forming block 13. The central forming block 13 is provided with a punching die button 14. The upper mold base 1 is movably provided with an upper forming block 15, and the upper mold base 1 is provided with several upper nitrogen springs 16 that push against the upper forming block 15. The outer edge of the lower forming block 9 corresponds to the junction of the upper plane and the upper inclined plane of the workpiece. The upper forming block 15 is provided with a central through hole 17 to avoid the central forming block 13. The forming surface of the upper forming block 15 includes the inclined part of the upper inclined plane of the workpiece and the outer periphery of the side of the workpiece.
[0020] Four movable guide rods 19 are movably arranged in the lower mold base 2, and the ends of the guide rods 19 are connected to the upper forming block 15. Four lower mold closing limit posts 20 are evenly distributed around the annular seat 3 on the lower mold base 2; the upper mold base 1 is provided with four upper mold closing limit posts 21 that cooperate with the lower mold closing limit posts 20. A mold closing guide seat 22 is provided at each of the four corners of the lower mold base 2, and a mold closing guide post 23 that cooperates with the mold closing guide seat 22 is provided at each of the four corners of the upper mold base 1.
[0021] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the protection scope of the present invention.
Claims
1. A middle stamping die for the rear housing of a power booster, comprising an upper die and a lower die, the upper die comprising an upper die base (1) and the lower die comprising a lower die base (2), characterized in that: The mold base is provided with an annular seat (3), the annular seat (3) is provided with a mounting seat (4), the mounting seat (4) is provided with a punch seat (5) in the middle, and the punch seat (5) is provided with a punching punch (6); A pair of guide grooves (7) are symmetrically provided on the mounting base (4), and a pair of nitrogen springs (8) that pass through the mounting base (4) are provided on the lower mold base (2). The nitrogen springs (8) are connected to the pressing material forming block (9) that is movably set on the mounting base (4). L-shaped limiting guide hooks (10) are provided on both sides of the bottom surface of the pressing material forming block (9). The outer edge of the limiting guide hook (10) extends beyond the outer side of the pressing material forming block (9). The limiting guide hook (10) cooperates with the guide groove (7). The lower mold base (2) is provided with an inverted L-shaped limiting block (11) that cooperates with the outer edge of the limiting guide hook (10) next to the two guide grooves (7). The upper mold base (1) is provided with an upper mold mounting plate (12), the upper mold mounting plate is provided with a middle forming block (13), the middle forming block (13) is provided with a punching die button (14), the upper mold base (1) is movably provided with an upper forming block (15), the upper mold base (1) is provided with several upper nitrogen springs (16) that push against the upper forming block (15); the outer edge of the lower forming block (9) corresponds to the junction of the upper plane and the upper inclined plane of the workpiece; the middle part of the upper forming block (15) is provided with a middle through hole (17) to avoid the middle forming block (13), and the forming surface of the upper forming block (15) includes the inclined part of the upper inclined plane of the forming workpiece and the outer periphery of the side of the forming workpiece.
2. The middle stamping die for the rear housing of a booster as described in claim 1, characterized in that: The lower mold base (2) has four mold closing lower limit posts (20) evenly distributed around the annular seat (3); the upper mold base (1) has four mold closing upper limit posts (21) that cooperate with the mold closing lower limit posts (20).
3. The middle stamping die for the rear housing of a booster as described in claim 1, characterized in that: The limiting guide hook (10) is provided with an installation hole that runs vertically through it, and the mounting base (4) is provided with a connecting threaded hole. The locking screw (18) passes through the installation hole and connects to the connecting threaded hole.
4. The middle stamping die for the rear housing of a booster as described in claim 1, characterized in that: At least two movable guide rods are movably provided in the upper mold base (1), and the ends of the guide rods (19) are connected to the upper forming block (15).
5. The middle stamping die for the rear housing of a booster as described in claim 1, characterized in that: Each of the four corners of the lower mold base (2) is provided with a mold closing guide seat (22), and each of the four corners of the upper mold base (1) is provided with a mold closing guide post (23) that cooperates with the mold closing guide seat (22).