Anti-impact bending lower die
By introducing a buffer seat and buffer spring structure into the mold, the vibration and impact problems of the mold during stamping and bending processes are solved, improving the quality and precision of the workpiece and extending the mold life.
Patent Information
- Application Number
- CN202520329210.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing molds generate significant vibration and impact during stamping and bending processes, affecting the surface quality and dimensional accuracy of workpieces and shortening the mold's service life.
An impact-resistant bending die was designed, which adopts a buffer seat, buffer spring and guide post structure. The guide post connected by the buffer seat and the buffer spring form a dynamic bending sleeve to achieve buffering and expansion, reduce vibration and impact, and relieve stress on the parts by combining with a long stroke buffer spring.
It significantly improves the surface quality and dimensional accuracy of workpieces, extends the service life of molds, and avoids bending angle deviations and part deformation.
Smart Images
Figure CN223862661U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bending die technology, and in particular to an impact-resistant bending lower die. Background Technology
[0002] Stamping and bending die technology is mainly used in the field of metal processing, especially in industries such as automobiles, aerospace and home appliances manufacturing.
[0003] Existing molds often generate significant vibration and impact during stamping and bending processes, affecting the surface quality and dimensional accuracy of the workpiece, and also impacting the service life of the mold. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0005] An impact-resistant bending die includes a lower die base, which includes a bottom plate and a top plate. Several reinforcing ribs are provided between the bottom plate and the top plate. Several shock-absorbing sleeves are symmetrically arranged on the left and right sides of the central reinforcing rib. A bending die is connected above the top plate. The bending die includes a front fixed plate, a rear fixed plate, and a fixed bottom plate. A dynamic bending die is provided on each of the left and right sides between the front and rear fixed plates. The dynamic bending die includes a buffer seat. Several guide pillars are connected to the buffer seat in parallel. A buffer spring is connected between the bottom of each guide pillar and the buffer seat. The tops of all guide pillars are fixedly connected to a dynamic bending sleeve perpendicular to them. The dynamic bending sleeve is fitted onto a movable shaft. The front and rear ends of the movable shaft are respectively placed in a movable limiting hole. A stripper plate is provided between two dynamic bending dies.
[0006] The buffer seat has a connecting lug on each of its front and rear sides, and the connecting lugs are fixedly connected to the front fixing plate and the rear fixing plate respectively by bolts.
[0007] Furthermore, the buffer seat is fixedly connected to the base, and the base is fixedly connected to the fixed base plate.
[0008] Furthermore, the movable limiting hole is a waist hole.
[0009] Furthermore, a number of guide posts are connected between the unloading plate and the top plate, and a number of buffer springs are connected between the unloading plate and the bottom plate.
[0010] Furthermore, the lower part of the second buffer spring is placed inside the shock-absorbing sleeve, and the top part is placed inside the buffer hole opened at the bottom of the unloading plate.
[0011] Furthermore, the buffer spring is located inside the buffer seat.
[0012] Furthermore, when the dynamic bending sleeve on the left moves to the far right and the dynamic bending sleeve on the right moves to the far left, the left and right sides of the unloading plate respectively contact the surface of the dynamic bending sleeve.
[0013] Compared with the prior art, the beneficial effects of this utility model are: when the impact-resistant bending lower die of this utility model is used, the buffer spring not only drives the dynamic bending sleeve to extend and retract, but also has a buffering effect, which makes the bending effect better and avoids excessive bending angle deviation.
[0014] A buffer spring with a sufficiently long stroke is provided to alleviate excess stress on the parts as much as possible, thereby avoiding unnecessary deformation of the parts and improving machining accuracy.
[0015] This invention can significantly improve the surface quality and dimensional accuracy of workpieces by reducing the vibration and impact of the mold during stamping and bending processes, while also extending the service life of the mold. Attached Figure Description
[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0018] Figure 2 This is a top view of the structure of this utility model;
[0019] Figure 3 From Figure 2 Schematic diagram of the cross-section at point AA;
[0020] Figure 4 This is a three-dimensional structural diagram of the present invention without the front fixing plate;
[0021] Figure 5 This is a three-dimensional structural diagram of the dynamic bending mold of this utility model;
[0022] Figure 6 This is a top view schematic diagram of the dynamic bending die of this utility model;
[0023] Figure 7 This is a three-dimensional structural diagram of the connection between the guide post and the buffer spring of this utility model. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
[0025] An impact-resistant bending die includes a lower die base 1, which includes a base plate 101 and a top plate 102. A plurality of reinforcing ribs 103 are provided between the base plate 101 and the top plate 102. A plurality of shock-absorbing sleeves 104 are symmetrically arranged on the left and right sides of each of the reinforcing ribs 103 located in the middle. A bending die 2 is connected above the top plate 102. The bending die 2 includes a front fixed plate 21, a rear fixed plate 22, and a fixed base plate 23. A plurality of shock-absorbing sleeves 104 are provided on the left and right sides between the front fixed plate 21 and the rear fixed plate 22. The dynamic bending die 3 includes a buffer seat 31, which is connected to a plurality of parallel guide posts 32. A buffer spring 33 is connected between the bottom of the guide posts 32 and the buffer seat 31. The top of all the guide posts 32 is fixedly connected to a dynamic bending sleeve 34 perpendicular to them. The dynamic bending sleeve 34 is fitted on a movable shaft 35. The front and rear ends of the movable shaft 35 are respectively placed in a movable limiting hole 36. A stripper plate 4 is provided between the two dynamic bending dies 3.
[0026] The buffer seat 31 has a connecting ear 38 on each of its front and rear sides, and the connecting ear 38 is fixedly connected to the front fixing plate 21 and the rear fixing plate 22 respectively by bolts 39.
[0027] Furthermore, the buffer seat 31 is fixedly connected to the base 37, and the base 37 is fixedly connected to the fixed base plate 23.
[0028] Furthermore, the movable limiting hole 36 is a waist hole.
[0029] Furthermore, a number of guide posts 5 are connected between the unloading plate 4 and the top plate 102, and a number of buffer springs 6 are connected between the unloading plate 4 and the bottom plate 101.
[0030] Furthermore, the lower part of the second buffer spring 6 is placed inside the shock-absorbing sleeve 104, and the top part is placed inside the buffer hole 41 opened at the bottom of the unloading plate 4.
[0031] Furthermore, the buffer spring 33 is disposed inside the buffer seat 31.
[0032] Furthermore, when the dynamic bending sleeve 34 on the left moves to the far right and the dynamic bending sleeve 34 on the right moves to the far left, the left and right sides of the unloading plate 4 respectively come into contact with the surface of the dynamic bending sleeve 34.
[0033] When using this impact-resistant bending lower die, the part is placed on the top surface of the stripper plate 4, and the upper bending die used in conjunction with it is pressed down. During the pressing down process of the upper bending die, it will push the dynamic bending sleeves 34 on both sides. The movable shaft 35 connected to the dynamic bending sleeve 34 moves to both sides along the movable limiting hole 36. During this process, the buffer spring 33 not only drives the dynamic bending sleeve 34 to extend and retract, but also has a buffering effect, which makes the bending effect good and avoids excessive bending angle deviation.
[0034] Several buffer springs 6 are connected between the unloading plate 4 and the base plate 101. The lower part of the buffer spring 6 is placed inside the damping sleeve 104, and the top is placed inside the buffer hole 41 opened at the bottom of the unloading plate 4. The stroke of the buffer spring 6 is long enough to relieve the excess stress on the parts as much as possible, thereby avoiding unnecessary deformation of the parts and improving the machining accuracy.
[0035] After processing, the upper bending die used in conjunction with it is reset. Under the action of buffer spring 33, the two dynamic bending sleeves 34 are reset. Under the action of the rebound force of buffer spring 6, the unloading plate 4 moves up to push out the processed part.
[0036] The specific implementation of this utility model has been described in detail above, but it is only an example. This utility model is not limited to the specific implementation cases described above, and equivalent modifications to this utility model are also within the protection scope of this utility model.
Claims
1. An impact-resistant bending die, characterized in that, The system includes a lower mold base (1), which includes a base plate (101) and a top plate (102). A plurality of reinforcing ribs (103) are provided between the base plate (101) and the top plate (102). A plurality of shock-absorbing sleeves (104) are symmetrically provided on the left and right sides of the reinforcing ribs (103) placed in the middle. A bending die (2) is connected above the top plate (102). The bending die (2) includes a front fixed plate (21), a rear fixed plate (22), and a fixed base plate (23). A dynamic bending device is provided on the left and right sides between the front fixed plate (21) and the rear fixed plate (22). The dynamic bending die (3) includes a buffer seat (31), which is connected to a plurality of guide pillars (32) arranged in parallel. A buffer spring (33) is connected between the bottom of the guide pillars (32) and the buffer seat (31). The top of all the guide pillars (32) is fixedly connected to a dynamic bending sleeve (34) perpendicular to it. The dynamic bending sleeve (34) is sleeved on a movable shaft (35). The front and rear ends of the movable shaft (35) are respectively placed in a movable limiting hole (36). A stripper plate (4) is provided between the two dynamic bending dies (3). The buffer seat (31) has a connecting ear (38) on each of its front and rear sides. The connecting ear (38) is fixedly connected to the front fixing plate (21) and the rear fixing plate (22) respectively by bolts (39).
2. The impact-resistant bending die according to claim 1, characterized in that, The buffer seat (31) is fixedly connected to the base (37), and the base (37) is fixedly connected to the fixed base plate (23).
3. The impact-resistant bending die according to claim 1, characterized in that, The movable limiting hole (36) is a waist hole.
4. The impact-resistant bending die according to claim 1, characterized in that, A number of guide posts (5) are connected between the unloading plate (4) and the top plate (102), and a number of buffer springs (6) are connected between the unloading plate (4) and the bottom plate (101).
5. The impact-resistant bending die according to claim 4, characterized in that, The lower part of the second buffer spring (6) is placed inside the shock-absorbing sleeve (104), and the top part is placed inside the buffer hole (41) opened at the bottom of the unloading plate (4).
6. The impact-resistant bending die according to claim 1, characterized in that, The buffer spring (33) is located inside the buffer seat (31).
7. The impact-resistant bending die according to claim 1, characterized in that, When the dynamic bending sleeve (34) on the left moves to the rightmost side and the dynamic bending sleeve (34) on the right moves to the leftmost side, the unloading plate (4) on the left and right sides respectively contacts the surface of the dynamic bending sleeve (34).