Automobile plate spring punching die
By designing a general automotive leaf spring punching mold, using the cooperation of components such as lower mold seat, slider seat, limit block, etc., automatic limit and high-precision punching are achieved, solving the problems of frequent mold replacement and limited manufacturing accuracy in the prior art, and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202421770963.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Most of the existing automotive leaf spring manufacturing tool molds are special molds, which leads to the need to replace the mold when replacing products, which wastes time and increases production costs, and is limited in manufacturing accuracy.
A general automotive leaf spring punching mold is designed, including a lower die seat, a slider seat, a lower module, a limiting block, a coil spring, a double-head screw, a punching lower die, a lateral positioning plate, a guide column, an upper die seat, a guide sleeve, an upper module and an upper punch. Automatic limiting and high-precision punching are achieved through the cooperation of these components.
The mold is simple in structure and easy to operate, and can quickly complete variety switching, improve punching work efficiency, reduce production costs, and improve product manufacturing accuracy.
Smart Images
Figure CN222842952U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile leaf spring manufacturing and punching, in particular to an automobile leaf spring punching die. Background Art
[0002] Automobile leaf spring is an important component of automobile suspension system. It is a spring system composed of multiple curved metal plates. It is usually used to support the weight of the car and provide shock absorption and stability of the vehicle. When manufacturing leaf springs, some holes need to be punched out of the steel plate to make the leaf spring have better elasticity and adaptability.
[0003] The manufacturing precision of automobile leaf springs is often limited by tooling and dies. At present, most manufacturers use special dies to ensure manufacturing precision, which is only suitable for a single product. In this way, when changing products, it is necessary to change the dies, which wastes time and has high production costs. At this time, a good universal tooling die is needed, which can not only reduce the labor intensity of workers and improve work efficiency, but also improve the manufacturing precision of products. After the manufacturing precision of products is improved, the service life of products can be effectively extended. Summary of the invention
[0004] The technical problem to be solved by the utility model is to provide a stable and universal punching tooling die for automobile leaf spring production, which can improve product manufacturing accuracy while reducing the number of tooling die types, shorten the time for changing dies and reduce labor intensity, thereby saving production costs and improving labor efficiency.
[0005] The utility model adopts the following technical solutions to solve the above technical problems.
[0006] A punching die for an automobile leaf spring, comprising a lower die seat, a slider seat, a lower die block, a limit block, a spiral spring, a double-headed screw, a punching lower die body, a lateral positioning plate, a guide column, an upper die seat, a guide sleeve, an upper die block, and an upper punch. The punching lower die body is fixedly arranged at the center of the lower die seat for placing a workpiece, and a hole is provided on the punching lower die body for punching;
[0007] The slider seat is arranged on the left side of the punching lower die body and fixed on the lower die seat. The slider seat is arranged in an L-shape as a whole. A through hole is arranged on one side of the slider seat perpendicular to the lower die seat, and a dovetail slide groove is arranged on one side of the slider seat parallel to the lower die seat. The lower die block is composed of a trapezoidal push block and a dovetail slider. A through hole is also arranged on the trapezoidal push block. The through hole on the trapezoidal push block and the through hole on the slider seat are located on the same horizontal line. The trapezoidal push block is fixedly connected to the dovetail slider, and the dovetail slider is movably connected to the dovetail slide groove on the slider seat.
[0008] The limit block is fixedly connected to the lower die block; one end of the double-headed screw passes through the slider seat and the through hole on the trapezoidal push block and is fixedly connected to the limit block, and the other end is fixedly connected to one end of the coil spring, and the other end of the coil spring is fixedly connected to the slider seat; the lateral positioning plate is arranged on the right side of the punching lower die body and is fixed to the lower die seat by bolts;
[0009] The guide column is vertically arranged and the bottom ends are fixed on both sides of the lower die base. The guide sleeve is movably connected to the guide column for guiding; the two sides of the upper die base are respectively fixedly connected to the top of the guide sleeve, the top of the upper module is fixedly connected to the upper die base, and the upper module is located above the lower module. The upper module is arranged in an inverted trapezoidal shape, and a vertically distributed U-shaped through groove is provided on the center line position of the cross section of the upper module; the upper punch is fixedly arranged at the center position of the upper die base.
[0010] Furthermore, two trapezoidal side panels are provided on one side of the slider seat parallel to the lower die seat, and the two trapezoidal side panels form a dovetail slide groove; the dovetail slider of the lower die block is arranged horizontally and the cone angle of the dovetail slider is set at 60°, which matches the size of the dovetail slide groove on the slider seat.
[0011] Furthermore, the limit block is fixed on the dovetail slider of the lower module and can slide on the slider seat together with the lower module; a front end top block is also provided on the side of the limit block close to the workpiece, the main view section of the limit block is L-shaped, and the top view section of the limit block is T-shaped.
[0012] Furthermore, the number of the guide pillars and guide sleeves is greater than or equal to two groups.
[0013] Furthermore, the upper punch is fixed at the center position of the upper die seat through a punch fixing base, and the position of the upper punch corresponds to the punching position of the workpiece.
[0014] Furthermore, the trapezoidal inclined surface of the upper module and the trapezoidal inclined surface of the lower module have the same inclination angle, and the two inclined surfaces are arranged opposite to each other.
[0015] Furthermore, a stripper plate is fixedly arranged on the lower die base, and the height of the stripper plate is higher than the height of the lateral positioning plate; the stripper plate consists of a left stripper plate and a right stripper plate, and the main view sections of the left stripper plate and the right stripper plate are both L-shaped, and the left stripper plate and the right stripper plate are respectively located on both sides of the lateral positioning plate, and the front ends of the left stripper plate and the right stripper plate extend above the workpiece, so as to separate the workpiece from the upper punch after punching is completed.
[0016] Furthermore, a longitudinal positioning frame is provided on one side of the lower die base, and the longitudinal positioning frame is distributed on the extension line of the center line of the lower die base, corresponding to the position of the punching lower die body. The longitudinal positioning frame is provided with a positioning ring, and the positioning ring cooperates with the positioning bolt to fix one end of the workpiece on the longitudinal positioning frame.
[0017] Furthermore, a limit plate and a limit bolt are provided on the right side of the lateral positioning plate. The limit plate is fixed on the lower mold base and a distance is left between the limit plate and the lateral positioning plate. The limit bolt is threadedly connected to the limit plate. The fixed position of the lateral positioning plate can be adjusted by adjusting the limit bolt; the main view section of the lateral positioning plate is L-shaped.
[0018] On the other hand, the automobile leaf spring punching die can also eliminate the lateral positioning plate, limit plate and limit bolt based on the above structure, and replace the lateral positioning plate on the right side of the lower die base with a set of slider seats, lower modules, limit blocks, coil springs, and double-headed screws symmetrically arranged on the left side, and an upper module symmetrical to the left side is also arranged on the right side of the upper die base.
[0019] Compared with the prior art, the automobile leaf spring punching die tooling of the utility model has the following advantages:
[0020] The automobile leaf spring punching die tooling has a simple structure and is easy to operate. It can quickly complete product switching and high-precision punching to ensure product quality. Through the cooperation of the upper module, lower module, spiral spring, limit block, lateral positioning plate and other limit components, the workpiece can be automatically limited during the punching preparation stroke without manual adjustment. The degree of automation is high, which improves the punching efficiency; and the workpiece can be kept in the center position of the punching machine, ensuring the punching quality and efficiency. A stripping plate is provided, which can automatically unload the material after punching is completed, so that the workpiece is separated from the upper punch, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model automobile leaf spring punching die;
[0022] Figure 2 It is a side sectional structural schematic diagram of the automobile leaf spring punching die of the utility model;
[0023] Figure 3 It is a schematic diagram of the top cross-sectional structure of the lower die seat of the automobile leaf spring punching die of the utility model;
[0024] Figure 4 It is a structural schematic diagram of a slider seat of a punching die for a leaf spring of an automobile of the utility model;
[0025] Figure 5 It is a structural schematic diagram of the lower module of the automobile leaf spring punching die of the utility model;
[0026] Figure 6 It is a structural schematic diagram of the limit block of the automobile leaf spring punching die of the utility model;
[0027] Figure 7 This is a structural schematic diagram of the punching lower die body of the utility model automobile leaf spring punching die
[0028] Figure 8 This is a structural schematic diagram of the stripping plate of the utility model automobile leaf spring punching die
[0029] Fig. 9 The utility model is a structural schematic diagram of an upper module of a punching die for an automobile leaf spring.
[0030] In the figure: 1-lower die seat, 2-slider seat, 201-trapezoidal side plate, 3-lower module, 301-trapezoidal push block, 302-dovetail slider, 4-limit block, 401-front end top block, 5-helical spring, 6-double-headed screw, 7-punching lower die body, 701-longitudinal positioning frame, 702-positioning ring, 703-hole, 704-blind hole, 8-stripping plate, 801-left stripping plate, 802-right stripping plate, 9-lateral positioning plate, 901-limiting bolt, 902-limiting plate, 10-guide column, 11-upper die seat, 12-upper module, 13-punch fixing base, 14-upper punch, 15-guide sleeve, 16-workpiece. DETAILED DESCRIPTION
[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and therefore, the utility model is not limited to the limitations of the specific embodiments disclosed below.
[0032] like Figure 1 to Figure 9 The punching die for automobile leaf spring shown in the figure comprises a lower die base 1, a slider base 2, a lower die block 3, a limit block 4, a spiral spring 5, a double-headed screw 6, a punching lower die body 7, a lateral positioning plate 9, a guide column 10, an upper die base 11, a guide sleeve 15, an upper die block 12, a punch fixing base 13, and an upper punch 14. The punching lower die body 7 is fixedly arranged at the center of the lower die base 1. When in use, the punching position of the workpiece 16 is placed above the punching lower die body 7. A hole 703 is arranged in the middle of the punching lower die body 7. The hole 703 is used to cooperate with the upper punch 14 for punching. A blind hole 704 is also arranged on both sides of the hole 703. The blind hole 704 is a process hole of the product and is used to position the automobile leaf spring product, i.e., the workpiece 16, before punching to facilitate alignment of the punching position.
[0033] The slider seat 2 is arranged on the left side of the punching lower die body 7 and is fixed on the lower die seat 1. Figure 4 As shown, the slider seat 2 is L-shaped as a whole, a through hole is provided on one side of the slider seat 2 perpendicular to the lower die seat 1, and two trapezoidal side plates 201 are provided on one side of the slider seat 2 parallel to the lower die seat 1, and the two trapezoidal side plates 201 form a dovetail slide.
[0034] The lower module 3 is composed of a trapezoidal push block 301 and a dovetail slider 302. Figure 5 As shown, the trapezoidal push block 301 is vertically arranged, and a through hole is also provided on the trapezoidal push block 301. The through hole on the trapezoidal push block 301 and the through hole on the slider seat 2 are located on the same horizontal line, and the angle between the inclined surface of the trapezoidal push block 301 and the upper horizontal plane is set at 109°; the dovetail slider 302 is horizontally arranged and the taper angle of the dovetail slider 302 is set at 60°, which matches the size of the dovetail slot on the slider seat 2. The dovetail slider 302 is movably connected to the dovetail slot on the slider seat 2, and the trapezoidal push block 301 and the dovetail slider 302 can be split and fixedly connected or integrally formed.
[0035] The limit block 4 is fixedly connected to the lower module 3. In this embodiment, the limit block 4 is fixed on the dovetail slider 302 of the lower module 3 and can slide on the slider seat 2 together with the lower module 3. The thickness of the limit block 4 is greater than the thickness of the punching lower die 7 and is used to limit the lateral displacement of the workpiece 16. Figure 6 As shown, the limit block 4 is also provided with a front end top block 401 on the side close to the workpiece 16, and the main view section of the limit block 4 as a whole (i.e. the limit block body + the front end top block 401) is L-shaped, and the top view section of the limit block 4 as a whole (i.e. the limit block body + the front end top block 401) is T-shaped, that is, the thickness of the front end top block 401 is less than the thickness of the limit block body, and the width of the front end top block 401 is greater than the width of the limit block body; the L-shaped setting of the main view section ensures that the limit block 4 will not be blocked by the punching lower die 7 when it is close to the workpiece 16, thereby avoiding the situation that the limit block 4 cannot contact the workpiece 16 when the workpiece 16 is small in size, and ensuring that the limit block 4 can play a role of lateral limiting; the T-shaped setting of the top view section increases the contact width between the limit block 4 and the workpiece 16, and enhances the limiting strength of the limit block 4.
[0036] like Figure 1 As shown, the coil spring 5 is sleeved on the double-headed screw 6, one end of the double-headed screw 6 passes through the through hole on the slider seat 2 and the through hole on the trapezoidal push block 301 and is fixedly connected to the limit block 4, and the other end is fixedly connected to one end of the coil spring 5, and the other end of the coil spring 5 is fixedly connected to the slider seat 2.
[0037] The lateral positioning plate 9 is arranged on the right side of the punching lower die body 7 and is fixed to the lower die base 1 by bolts. The thickness of the lateral positioning plate 9 is greater than the thickness of the punching lower die body 7 and is used to limit the lateral displacement of the workpiece 16. A limiting plate 902 and a limiting bolt 901 are arranged on the right side of the lateral positioning plate 9. The limiting plate 902 is fixed to the lower die base 1 and has a certain distance from the lateral positioning plate 9. The limiting bolt 901 is threadedly connected to the limiting plate 902. The limiting plate 902 and the limiting bolt 901 are used to strengthen the lateral limiting of the lateral positioning plate 9 on the workpiece 16, and the fixing position of the lateral positioning plate 9 can be adjusted by adjusting the limiting bolt 901. Figure 1As shown, the front cross-section of the lateral positioning plate 9 is also L-shaped, and its design principle and function are the same as those of the limit block 4.
[0038] The guide pillars 10 are arranged vertically and the bottom ends are fixed on both sides of the lower die base 1 for guiding; the guide sleeves 15 are also arranged vertically, and the guide sleeves 15 are sleeved on the guide pillars 10, and are movably connected with the guide pillars 10 to cooperate with the guide pillars 10 for guiding. In this embodiment, two groups of guide pillars 10 and guide sleeves 15 are arranged; in other embodiments, in order to enhance stability, three or four groups of guide pillars 10 and guide sleeves 15 can also be arranged, and the guide pillars 10 are respectively on the four corners of the lower die base 1, and the guide sleeves 15 are respectively fixed on the corresponding positions of the upper die base 11.
[0039] The two sides of the upper die base 11 are respectively fixedly connected to the top of the guide sleeve 15, the punch fixing base 13 is fixedly set at the center of the upper die base 11, and the upper punch 14 is fixed on the punch fixing base 13. The position of the upper punch 14 corresponds to the punching position of the workpiece 16, that is, the position of the hole 703 on the punching lower die body 7; the top of the upper module 12 is fixedly connected to the upper die base 11 and is located above the lower module 3. The upper module 12 is set in an inverted trapezoidal shape, and the trapezoidal inclined surface of the upper module 12 has the same inclination angle as the trapezoidal inclined surface of the lower module 3, and the two inclined surfaces are arranged opposite to each other; Fig. 9 As shown, a vertically distributed U-shaped through groove is provided at the center line position of the cross section of the upper module 12, and the opening of the U-shaped through groove faces downward.
[0040] In this embodiment, a stripping plate 8 is also fixedly provided on the lower die base 1. Figure 8 As shown, the stripping plate 8 is composed of a left stripping plate 801 and a right stripping plate 802. The main view sections of the left stripping plate 801 and the right stripping plate 802 are both L-shaped, and the height of the stripping plate 8 is higher than the height of the lateral positioning plate 9. The left stripping plate 801 and the right stripping plate 802 are respectively located on both sides of the lateral positioning plate 9, and the front ends of the left stripping plate 801 and the right stripping plate 802 extend above the workpiece 16, so as to separate the workpiece 16 from the upper punch 14 after punching is completed.
[0041] Among them, Figure 3 As shown, a longitudinal positioning frame 701 is also provided on one side of the lower die base 1 close to the guide column 10 and guide sleeve 15. The longitudinal positioning frame 701 is distributed on the extension line of the center line of the lower die base 1, which corresponds to the position of the punching lower die body 7. The longitudinal positioning frame 701 is provided with a positioning ring 702. The positioning ring 702 cooperates with the positioning bolt to fix one end of the workpiece 16 on the longitudinal positioning frame 701.
[0042] In other embodiments, the automobile leaf spring punching die tooling can also cancel the lateral positioning plate 9, the limit plate 902 and the limit bolt 901 on the right side, and replace them with a group of slider seat 2, lower module 3, limit block 4, coil spring 5, double-headed screw 6 on the right side of the lower die base 1, and a corresponding upper module 12 is also set on the right side of the upper die base 11, so that the limit components on the punching die tooling are symmetrically designed, which is convenient for automatically limiting the workpiece 16, so that the workpiece 16 remains in the center position of the punching machine, and also does not affect the unloading work of the stripping plate 8.
[0043] The specific implementation process of the automobile leaf spring punching die tooling is: first connect the punch press with the upper die base 11, place the workpiece 16 to be punched on the punching lower die body 7 in the center of the lower die base 1, start the punch press to drive the upper die base 11 to move downward along the guide column 10, and the upper module 12 and the upper punch 14 are also driven to move downward. Since the upper module 12 has a larger size in the height direction, the upper module 12 contacts and pushes the lower module 3 to move to the side of the workpiece 16 before the lower module 3, and then the limit block 4 moves horizontally to push the workpiece 16, so that the workpiece 16 remains in the center position of the punch press. At this time, the coil spring 5 is in a compressed state. When the upper die base 11 moves downward to the lower dead center position, the upper punch 14 works on the workpiece 16 to complete the punching. When the upper die base 11 is driven by the punch press to return upward, the upper module 12 also moves upward and returns to its initial position. At this time, the limit block 4 and the lower module 3 are not restricted by the upper module 12. Through the restoring force of the coil spring 5, the double-headed screw 6 pulls the limit block 4 and the lower module 3 to slide to the left and return to their initial position, waiting for the next work.
Claims
1. A punching die for automobile leaf springs, characterized in that: It includes a lower die base, a slider base, a lower die block, a limit block, a spiral spring, a double-headed screw, a punching lower die body, a lateral positioning plate, a guide column, an upper die base, a guide sleeve, an upper die block, and an upper punch. The punching lower die body is fixedly arranged at the center of the lower die base for placing the workpiece. The punching lower die body is provided with holes for punching; The slider seat is arranged on the left side of the punching lower die body and fixed on the lower die seat. The slider seat is arranged in an L-shape as a whole. A through hole is arranged on one side of the slider seat perpendicular to the lower die seat, and a dovetail slide groove is arranged on one side of the slider seat parallel to the lower die seat. The lower die block is composed of a trapezoidal push block and a dovetail slider. A through hole is also arranged on the trapezoidal push block. The through hole on the trapezoidal push block and the through hole on the slider seat are located on the same horizontal line. The trapezoidal push block is fixedly connected to the dovetail slider, and the dovetail slider is movably connected to the dovetail slide groove on the slider seat. The limit block is fixedly connected to the lower die block; one end of the double-headed screw passes through the slider seat and the through hole on the trapezoidal push block and is fixedly connected to the limit block, and the other end is fixedly connected to one end of the coil spring, and the other end of the coil spring is fixedly connected to the slider seat; the lateral positioning plate is arranged on the right side of the punching lower die body and is fixed to the lower die seat by bolts; The guide column is vertically arranged and the bottom ends are fixed on both sides of the lower die base. The guide sleeve is movably connected to the guide column for guiding; the two sides of the upper die base are respectively fixedly connected to the top of the guide sleeve, the top of the upper module is fixedly connected to the upper die base, and the upper module is located above the lower module. The upper module is arranged in an inverted trapezoidal shape, and a vertically distributed U-shaped through groove is provided on the center line position of the cross section of the upper module; the upper punch is fixedly arranged at the center position of the upper die base.
2. The automobile leaf spring punching die according to claim 1, characterized in that: The slider seat is provided with two trapezoidal side plates on one side parallel to the lower die seat, and the two trapezoidal side plates form a dovetail slide groove; the dovetail slider of the lower die block is arranged horizontally and the cone angle of the dovetail slider is set at 60°, which matches the size of the dovetail slide groove on the slider seat.
3. The automobile leaf spring punching die according to claim 2, characterized in that: The limit block is fixed on the dovetail slider of the lower module and can slide on the slider seat together with the lower module; a front end top block is also provided on the side of the limit block close to the workpiece, the main view section of the limit block is L-shaped, and the top view section of the limit block is T-shaped.
4. The automobile leaf spring punching die according to claim 1, characterized in that: The number of the guide pins and guide sleeves is greater than or equal to two groups.
5. The automobile leaf spring punching die according to claim 1, characterized in that: The upper punch is fixed at the center of the upper die seat through a punch fixing base, and the position of the upper punch corresponds to the punching position of the workpiece.
6. The automobile leaf spring punching die according to claim 1, characterized in that: The trapezoidal inclined surface of the upper module and the trapezoidal inclined surface of the lower module have the same inclination angle, and the two inclined surfaces are arranged opposite to each other.
7. The automobile leaf spring punching die according to claim 1, characterized in that: A stripping plate is also fixedly arranged on the lower die base, and the height of the stripping plate is higher than the height of the lateral positioning plate; the stripping plate consists of a left stripping plate and a right stripping plate, and the main viewing sections of the left stripping plate and the right stripping plate are both L-shaped, and the left stripping plate and the right stripping plate are respectively located on both sides of the lateral positioning plate, and the front ends of the left stripping plate and the right stripping plate are extended above the workpiece, so as to separate the workpiece from the upper punch after punching is completed.
8. The automobile leaf spring punching die according to claim 7, characterized in that: A longitudinal positioning frame is also provided on one side of the lower die base. The longitudinal positioning frame is distributed on the extension line of the center line of the lower die base and corresponds to the position of the punching lower die body. The longitudinal positioning frame is provided with a positioning ring. The positioning ring cooperates with the positioning bolt to fix one end of the workpiece on the longitudinal positioning frame.
9. The automobile leaf spring punching die according to claim 3, characterized in that: A limit plate and a limit bolt are provided on the right side of the lateral positioning plate. The limit plate is fixed on the lower die base and a distance is left between the limit plate and the lateral positioning plate. The limit bolt is threadedly connected to the limit plate. The main view section of the lateral positioning plate is L-shaped.
10. The automobile leaf spring punching die according to any one of claims 1 to 8, characterized in that: The lateral positioning plate on the right side of the lower die base is replaced with a set of slider seats, lower modules, limit blocks, coil springs, and double-headed screws that are symmetrically arranged on the left side, and an upper module that is symmetrical to the left side is also arranged on the right side of the upper die base.