Bending mechanism of stamping die
By installing a nitrogen spring under the lower molding sway block of the stamping mold, the bending angle adjustment of the high-bending structure is achieved, and the problem of difficulty in adjusting the bending angle of the high-bending structure in the prior art is solved, and the formation of the negative angle high-bending structure and the simplification of the process is achieved.
Patent Information
- Application Number
- CN202421631854.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-10
AI Technical Summary
In metal sheet processing, it is difficult for the prior art to effectively adjust the bending angle of the high-bending structure, especially when forming a negative angle high-bending structure.
A bending mechanism for stamping molds is designed, including an upper die and a lower die. By providing a second nitrogen spring below the lower die forming sway block, the lower die forming sway block is pushed upwards and rotated around the axis of the notched circular hole. When closing the mold, the lower die forming sway block rotates downwards, and the bending angle of the high bending structure is adjusted in conjunction with the forming slope.
The bending angle adjustment of the high-bending structure is realized, and a negative angle high-bending structure can be formed, which simplifies the process and reduces costs.
Smart Images
Figure CN222885777U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stamping dies, and particularly relates to a bending mechanism of a stamping die. Background Art
[0002] Most metal products with complex structures are formed by using continuous stamping dies. The continuous stamping die can complete multiple processes at one time, thereby improving production efficiency. In actual production, when processing some metal plates with high bending structures having negative angles, after the forming process of the high bending structure is completed first, the bending angle of the high bending structure needs to be adjusted subsequently, so as to finally form a high bending structure with a bending angle less than 90 degrees, that is, a high bending structure with a negative angle. Therefore, there is an urgent need to provide a bending mechanism that can adjust the bending angle of the high bending structure of metal plates. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a bending mechanism of a stamping die, which can adjust the bending angle of the high bending structure of metal plates.
[0004] To solve the above technical problem, the utility model adopts the following technical solutions:
[0005] A bending mechanism of a stamping die, the stamping die includes an upper die and a lower die, and includes: a punch, which includes an upper die forming block and an upper die forming slider. The upper die forming block is detachably fixed on the upper die. The upper die forming slider is embedded in the side wall of the upper die forming block. The upper die forming slider is in transmission connection with a first nitrogen spring arranged on the upper die and can slide on the upper die forming block under its drive. A forming inclined surface is arranged on the outer side wall of the upper die forming slider; a lower die fixing block, which is fixed on the lower die. A notch circular hole is penetrated through the top of the lower die fixing block along the Y-axis direction; a lower die forming swing block, which is located below the punch. A circular rotating head rotatably connected with the notch circular hole is arranged at one end of the lower die forming swing block far away from the punch. A V-shaped opening is arranged at the top of one end of the lower die forming swing block close to the punch. The bottom is in transmission connection with a second nitrogen spring arranged on the lower die fixing block. The second nitrogen spring is used to drive the lower die forming swing block to rotate in the X-Z plane around the axis of the notch circular hole. When the dies are closed, the punch moves downward and pushes the lower die forming swing block to rotate downward. The forming surface of the V-shaped opening is close to the forming inclined surface, so as to perform negative angle bending on the high bending structure of the product.
[0006] As a further elaboration of the above technical solution:
[0007] In the above technical solution, limiting gaskets are arranged at both ends of the notch circular hole, and the limiting gaskets are located outside both ends of the circular rotating head, and are used to limit the circular rotating head.
[0008] In the above technical solution, the limiting gasket is fixed on the side wall of the lower die fixing block through a connecting screw.
[0009] In the above technical solution, the side wall of the upper mold forming block is provided with an inclined chute, and the upper mold forming slider is fitted and embedded on the chute and can slide along the chute. A first limiting plate is provided on the top of the upper mold forming slider, and the first limiting plate is located above the chute, which is used to limit the stroke of the upper mold forming slider.
[0010] In the above technical solution, the chute includes a dovetail groove and a clamping groove; the upper mold forming slider is provided with a dovetail convex block and a clamping block adapted to the dovetail groove and the clamping groove.
[0011] In the above technical solution, a lower mold fixing seat installed on the lower mold is provided below the lower mold fixing block, and the lower mold fixing block is installed on the lower mold fixing seat; the lower mold fixing block and the lower mold fixing seat are provided with mounting holes for installing the second nitrogen spring.
[0012] Compared with the prior art, the present utility model at least achieves the following beneficial effects:
[0013] In the present utility model, since a second nitrogen spring is provided below the lower mold forming swing block, before mold closing, the second nitrogen spring jacks up the lower mold forming swing block, and the lower mold forming swing block rotates upward around the axis of the notch circular hole; during mold closing, the product is located above the lower mold forming swing block, the upper mold drives the punch to press on the surface of the product from above, and the punch continues to press down to push the lower mold forming swing block to rotate downward around the axis of the notch circular hole. At this time, the V-shaped notch at the top of the lower mold forming swing block moves close to the forming inclined surface of the upper mold forming slider, so as to bend the high bending structure located between the V-shaped notch and the forming inclined surface inward. With the angle set by the forming inclined surface, the bending angle of the high bending structure can be adjusted to complete the negative angle bending of the high bending structure; during mold opening, the upper mold drives the punch to move upward and away from the surface of the product. Due to the elastic force of the second nitrogen spring, the lower mold forming swing block rotates upward at the same time until the punch is far away from the lower mold forming swing block, and the product can fall from the top of the lower mold forming swing block. The structure of the present utility model is simple, the cost is reduced, and the process is simplified. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Now, one or more embodiments of the present utility model will be described only by way of example with reference to the accompanying drawings, in which:
[0015] Figure 1 is a schematic structural diagram of an embodiment of the present application;
[0016] Figure 2 is an exploded view of an embodiment of the present application;
[0017] Figure 3 is a schematic structural diagram of the punch of an embodiment of the present application.
[0018] The reference numerals in the figure are: 1, punch; 11, upper die forming block; 12, upper die forming slider; 121, forming inclined surface; 122, dovetail convex block; 123, clamping block; 2, lower die fixing block; 21, notched round hole; 3, lower die forming swing block; 31, round rotating head; 32, V-shaped opening; 4, limit gasket; 5, connecting screw; 6, chute; 61, dovetail groove; 62, clamping groove; 7, first limit plate; 8, lower die fixing seat; 9, mounting hole; 10, product; 101, high bending structure. Specific implementation mode
[0019] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. It should be understood, however, that the present application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.
[0020] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "several" and "multiple" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and defined, terms such as "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0021] As Figures 1 to 3 shown, in an embodiment of the present utility model, the bending mechanism of the stamping die is installed on the stamping die. The stamping die includes an upper die and a lower die. The bending mechanism includes a punch 1, a lower die fixing block 2, and a lower die forming swing block 3, wherein:
[0022] The punch 1 includes an upper die forming block 11 and an upper die forming slider 12. The upper die forming block 11 is detachably fixed on the upper die. The upper die forming slider 12 is embedded in the side wall of the upper die forming block 11. The upper die forming slider 12 is drivingly connected to a first nitrogen spring provided on the upper die. The upper die forming slider 12 can be driven by the first nitrogen spring to slide on the upper die forming block 11 according to the processing requirements, so as to adjust the position of the upper die forming block 11. An forming inclined surface 121 is provided on the outer side wall of the upper die forming slider 12. Optionally, the forming inclined surface 121 can be set to different inclination angles according to the angle that the product 10 needs to be bent, so as to meet the processing requirements of different bending angles.
[0023] The lower die fixing block 2 is fixed on the lower die. A notch round hole 21 runs through the top of the lower die fixing block 2 along the Y-axis direction.
[0024] The lower die forming swing block 3 is located below the punch 1. A circular rotating head 31 rotatably connected to the notch round hole 21 is provided at one end of the lower die forming swing block 3 away from the punch 1. A V-shaped opening 32 is provided at the top of the end of the lower die forming swing block 3 close to the punch 1. The bottom is drivingly connected to a second nitrogen spring provided on the lower die fixing block 2. The second nitrogen spring is used to drive the lower die forming swing block 3 to rotate in the X-Z plane around the axis of the notch round hole 21. When the die is closed, the punch 1 moves downward and pushes the lower die forming swing block 3 to rotate downward. The forming surface of the V-shaped opening 32 is close to the forming inclined surface 121, so as to perform a negative angle bending on the high bending structure 101 of the product 10. Optionally, the forming surface of the V-shaped opening 32 can be set to different inclination angles according to the angle that the product 10 needs to be bent.
[0025] Specifically, limiting gaskets 4 are provided at both ends of the notch round hole 21. The limiting gaskets 4 are located outside both ends of the circular rotating head 31. The limiting gaskets 4 block both ends of the circular rotating head 31 and are used to limit the movement of the circular rotating head 31 along the Y-axis direction. It is used to limit the circular rotating head 31. Optionally, the limiting gaskets 4 are fixed to the side wall of the lower die fixing block 2 by a connecting screw 5.
[0026] Specifically, an inclined chute 6 is provided on the side wall of the upper die forming block 11. The upper die forming slider 12 is fitted and embedded on the chute 6 and can slide along the chute 6. A first limiting plate 7 is provided at the top of the upper die forming slider 12. The first limiting plate 7 is located above the chute 6 and is used to limit the stroke of the upper die forming slider 12. Optionally, the chute 6 includes a dovetail groove 61 and a clamping groove 62; the upper die forming slider 12 is provided with a dovetail convex block 122 and a clamping block 123 adapted to the dovetail groove 61 and the clamping groove 62.
[0027] Specifically, a lower die fixing seat 8 installed on the lower die is provided below the lower die fixing block 2. The lower die fixing block 2 is installed on the lower die fixing seat 8; mounting holes 9 for installing the second nitrogen spring are provided on the lower die fixing block 2 and the lower die fixing seat 8.
[0028] The working principle of the present utility model is as follows:
[0029] Since a second nitrogen spring is provided below the lower die forming swing block 3, before mold closing, the second nitrogen spring jacks up the lower die forming swing block 3 upward, and the lower die forming swing block 3 rotates upward around the axis of the notch round hole 21 to be in an inclined state; during mold closing, the product 10 is located above the lower die forming swing block 3, the upper die drives the punch 1 to press on the surface of the product 10 from above, and the punch 1 continues to press down to push the lower die forming swing block 3 to rotate downward around the axis of the notch round hole 21. At this time, the V-shaped notch at the top of the lower die forming swing block 3 moves close to the forming inclined surface 121 of the upper die forming slider 12, so as to bend the high bending structure 101 located between the V-shaped notch and the forming inclined surface 121 inward. Matching the angle set by the forming inclined surface 121, the bending angle of the high bending structure 101 can be adjusted to complete the negative angle bending of the high bending structure 101;
[0030] During mold opening, the upper die drives the punch 1 to move upward and leave the surface of the product 10, and due to the elastic force of the second nitrogen spring, the lower die forming swing block 3 rotates upward at the same time until the punch 1 is far away from the lower die forming swing block 3, and the product 10 can fall from the top of the lower die forming swing block 3.
[0031] The structure of the present utility model is simple and the cost is reduced.
[0032] It should be understood that all the above embodiments are exemplary rather than restrictive. Under the concept of the present utility model, any modification, equivalent change and modification made to the above-described specific embodiments by those skilled in the art still fall within the scope of the technical solution of the present utility model.
Claims
1. A bending mechanism of a stamping die, the stamping die comprising an upper die and a lower die, characterized in that: include: A punch (1) comprises an upper die forming block (11) and an upper die forming slider (12), wherein the upper die forming block (11) is detachably fixed on the upper die, the upper die forming slider (12) is embedded in the side wall of the upper die forming block (11), the upper die forming slider (12) is transmission-connected to a first nitrogen spring provided on the upper die, and can slide on the upper die forming block (11) under the drive of the first nitrogen spring, and the outer side wall of the upper die forming slider (12) is provided with a forming inclined surface (121); The lower die fixing block (2) is fixed on the lower die, and the top of the lower die fixing block (2) is penetrated along the Y-axis direction. lack Round hole (twenty one); A lower die forming pendulum block (3) is located below the punch (1); a circular rotating head (31) is provided at one end of the lower die forming pendulum block (3) away from the punch (1) and is rotatably connected to the notched circular hole (21); a V-shaped opening (32) is provided at the top of one end of the lower die forming pendulum block (3) close to the punch (1); and a second nitrogen spring is provided at the bottom for transmission connection with the second nitrogen spring provided on the lower die fixed block (2); the second nitrogen spring is used to drive the lower die forming pendulum block (3) to rotate around the axis of the notched circular hole (21) in the XZ plane; when the mold is closed, the punch (1) moves downward and pushes the lower die forming pendulum block (3) to rotate downward; the forming surface of the V-shaped opening (32) is close to the forming inclined surface (121), thereby performing negative angle bending on the high bending structure (101) of the product (10).
2. The bending mechanism of the stamping die according to claim 1, characterized in that: Limiting gaskets (4) are provided at both ends of the notched circular hole (21). The limiting gaskets (4) are located outside both ends of the circular rotating head (31) and are used to limit the circular rotating head (31).
3. The bending mechanism of the stamping die according to claim 2, characterized in that: The limiting gasket (4) is fixed to the side wall of the lower mold fixing block (2) via a connecting screw (5).
4. The bending mechanism of the stamping die according to claim 1, characterized in that: The side wall of the upper mold forming block (11) is provided with an inclined slide groove (6), the upper mold forming slider (12) is matched and embedded in the slide groove (6) and can slide along the slide groove (6), and the top of the upper mold forming slider (12) is provided with a first limit plate (7), and the first limit plate (7) is located above the slide groove (6) and is used to limit the stroke of the upper mold forming slider (12).
5. The bending mechanism of the stamping die according to claim 4, characterized in that: The slide groove (6) comprises a dovetail groove (61) and a clamping groove (62); the upper die forming slide block (12) is provided with a dovetail protrusion (122) and a clamping block (123) which are matched with the dovetail groove (61) and the clamping groove (62).
6. The bending mechanism of the stamping die according to claim 1, characterized in that: A lower die fixing seat (8) mounted on the lower die is provided below the lower die fixing block (2), and the lower die fixing block (2) is mounted on the lower die fixing seat (8); and mounting holes (9) for mounting a second nitrogen spring are provided on the lower die fixing block (2) and the lower die fixing seat (8).