Automobile plate spring bending forming die

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By designing the automotive leaf spring press-bending mold, the combination of the press-bending mold, the press-bending mold, the roller bracket and the press-hook mould, the problem of the existing mold being unable to adjust and the accuracy is solved, and the difference is achieved Efficient machining and precise bending of model leaf springs.

CN222343862UActive Publication Date: 2025-01-14HENAN HAZCHIN AUTO LEAF SPRINGS CO LTD

View PDF 0 Cites 0 Cited by

Patent Information

Application Number: CN202420847109.8
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-04-23
Publication Date: 2025-01-14
Estimated Expiration: 2034-04-23

AI Technical Summary

Technical Problem

The leaf spring bending molds on the market cannot be adjusted according to different specifications of leaf springs, and single-shaped leaf springs are processed, and the position is offset due to huge impact forces during the pressing and bending process, which has low accuracy and poor stability.

Method used

A car leaf spring press-bending mold is designed, including a press-bending mold on the press-bending mold, a press-bending mould, a roller bracket and a press-hook mould. Through the cooperation of the press-spring, the roller and the guide sleeve, 360° rotation is achieved. It can be bent according to different models of leaf springs and improve the bending accuracy through bevel design.

Benefits of technology

It realizes the simple structure and easy to use of the mold, can adapt to the processing of different types of leaf springs, improves the bending accuracy, prevents the leaf springs from sliding, and enhances the machining stability.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN222343862U_ABST

Patent Text Reader

Abstract

The utility model discloses an automobile plate spring bending forming die which comprises a forming die body, a bending die upper die plate is arranged on the upper portion of the forming die body, a compression spring is arranged at the lower end of the middle of the bending die upper die plate, a compression male die is arranged at the lower end of the compression spring, and a compression male die end positioning plate is arranged at the left end of the compression male die. A fixing screw on the pressing male die end positioning plate is fixedly connected with the bottom of the pressing die upper die plate, a roller support is arranged at the right end of the pressing male die, a roller is arranged at the bottom of the roller support in a connected mode, a guide sleeve is arranged at the right end of the roller support, and a bending die lower die plate is arranged below the bending die upper die plate. In general, the plate spring bending machine has the advantages of being simple in structure, convenient to use and capable of being suitable for bending machining of plate springs of different models.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile leaf spring processing, in particular to an automobile leaf spring bending forming die. Background Art

[0002] Leaf springs are made of at least one sheet of compression spring steel stacked together. Leaf springs are commonly used in wheeled vehicle suspensions. Originally called laminated or cradle springs, sometimes called semi-elliptical springs or trolley springs, they are one of the oldest forms of compression springs. Leaf springs are long circular arcs of rectangular cross-section. In the most common configuration, the center of the arc provides the location of the axis, while the loops formed at either end attach to the vehicle chassis. For very heavy vehicles, leaf springs can be made from multiple leaves stacked together, usually with gradually shorter leaves.

[0003] The leaf spring bending dies currently on the market are very troublesome to use. They cannot be adjusted according to leaf springs of different specifications and can only process leaf springs of a single shape, which has certain limitations. At the same time, the leaf spring will be displaced due to the huge impact force during the bending process, and the precision and stability are low. Therefore, it is of great application significance to develop an automobile leaf spring bending forming die with a simple structure, easy use, and adaptable to leaf springs of different models. Summary of the invention

[0004] The utility model aims to provide a automobile leaf spring bending forming die to solve the problems that the leaf spring bending dies currently on the market are very troublesome in use, cannot be adjusted according to leaf springs of different specifications, can only process leaf springs of a single shape, have certain limitations, and at the same time, the leaf spring will be positionally offset due to the huge impact force during the bending process, and have low precision and poor stability. Therefore, it is of great application significance to develop an automobile leaf spring bending forming die with a simple structure, easy use, and adaptable to leaf springs of different models.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] A bending forming die for automobile leaf springs, comprising a forming die body, an upper bending die template is arranged on the upper part of the forming die body, a compression spring is arranged at the lower end of the middle part of the upper bending die template, a pressing punch is arranged at the lower end of the compression spring, a pressing punch end positioning plate is arranged at the left end of the pressing punch, a fixing screw on the pressing punch end positioning plate is fixedly connected to the bottom of the upper die template, a roller bracket is arranged at the right end of the pressing punch, a roller is connected to the bottom of the roller bracket, a guide sleeve is arranged at the right end of the roller bracket, and a lower bending die template is arranged below the upper bending die template;

[0007] A pressing hook punch is arranged at the upper middle end of the lower mold plate of the pressing and bending die, a supporting plate is arranged at the left end of the pressing hook punch, a pressing and bending groove is arranged at the right end of the pressing and bending groove, and a guide column is arranged on the right side of the pressing and bending groove;

[0008] Beneficial effect: The utility model arranges a compression spring below the middle of the upper template of the bending die, a compression punch is connected below the compression spring, the compression punch is matched and connected with the upper template of the bending die through a compression punch end positioning plate and a compression punch side positioning plate, the bottom wall of the compression punch is an inclined surface, a roller bracket is arranged on the right side of the compression punch, a roller is arranged at the bottom of the roller bracket, the roller is matched and connected with the roller bracket through a bearing, the roller can rotate 360 degrees, a bending die lower template is arranged below the bending die upper template, a pressing hook punch is arranged in the middle of the bending die lower template, the top wall of the pressing hook punch is an inclined surface, the pressing hook punch is fixedly connected with the bending die lower template by bolts, and the left side of the pressing hook punch is fixedly arranged There is a support plate, and a locating pin is arranged on the left end of the support plate. During use, the leaf spring can be placed on the support plate and the locating hole on the leaf spring is concentric with the locating pin to complete the positioning of the leaf spring. Subsequently, the upper template of the bending die is pressed down by the die handle. The upper template of the bending die is pressed down and the pressing punch, roller bracket and roller are pressed down at the same time. The pressing punch can exert a certain pressure on the leaf spring under the action of the compression spring to prevent the leaf spring from sliding. At the same time, the roller bracket and roller are pressed down to complete the bending of the leaf spring. During use, the pressing hook punch can be replaced according to the bending angle of the leaf spring to adapt to different types of leaf spring compression springs. In addition, the leaf spring can prevent sliding during the bending process under the action of the pressing punch, which improves the bending accuracy.

[0009] Furthermore, the roller is connected to the roller bracket through a bearing; by arranging a roller at the lower end of the roller bracket, the roller can rotate 360°. During use, the leaf spring is located below the roller bracket and the roller. During the pressing process, the rotation of the roller can facilitate the pressing of the roller bracket and the roller and help to bend the leaf spring.

[0010] Furthermore, the roller bracket and the upper template of the bending die are an integrated structure.

[0011] Furthermore, a locating pin fixing plate is provided at the left end of the support plate, and the locating pin fixing plate is fixedly connected to the support plate by fixing screws, and a locating pin is fixedly provided at the middle upper end of the locating pin fixing plate; by providing the locating pin fixing plate at the left end of the support plate, a locating pin is provided at the middle upper end of the locating pin fixing plate, the locating pin and the locating pin fixing plate are an integrated structure, and the locating pin fixing plate is fixedly connected to the support plate by fixing screws and fixing nuts. During use, the leaf spring is placed above the support plate and the locating hole opened on the leaf spring is concentric with the locating pin to complete the positioning of the leaf spring. After the leaf spring is positioned, the bending accuracy of the leaf spring can be improved.

[0012] Furthermore, the top surface of the pressing hook punch is an inclined surface; by setting the top surface of the pressing hook punch to an inclined surface, the angle of the inclined surface is the required bending angle of the leaf spring, and the pressing hook punch is fixedly connected to the lower template of the bending mold by bolts. During use, a suitable pressing hook punch can be selected according to the requirements of different bending angles of leaf springs and fixedly connected to the lower template of the bending mold; in general: the utility model has the advantages of simple structure, easy use, and adaptability to bending processing of leaf springs of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a left-side cross-sectional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 3 It is a left-side cross-sectional structural schematic diagram of the left end portion of the support plate of the utility model.

[0016] Figure numerals: 0, forming mold body 1, mold handle 2, upper mold plate of bending mold 3, guide sleeve 4, clamping punch 5, compression spring 6, clamping punch end positioning plate 7, roller bracket 8, bending mold lower mold plate 9, pressing hook punch 10, guide column 11, support plate 110, fixing screw 111, positioning pin 112, positioning pin fixing plate 113, fixing nut 12, clamping punch side positioning plate 13, roller 14, pin shaft 15, bending groove. DETAILED DESCRIPTION

[0017] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] The specific implementation of the utility model is as follows Figure 1 , Figure 2 , Figure 3 As shown, the utility model provides a bending forming die for automobile leaf springs, comprising a forming die body 0, characterized in that: a bending die upper template 2 is arranged on the upper part of the forming die body 0, a compression spring 5 is arranged at the lower end of the middle part of the bending die upper template 2, a pressing punch 4 is arranged at the lower end of the compression spring 5, a pressing punch end positioning plate 6 is arranged at the left end of the pressing punch 4, a fixing screw on the pressing punch end positioning plate 6 is fixedly connected to the bottom of the pressing die upper template 2, a roller bracket 7 is arranged at the right end of the pressing punch 4, a roller 13 is connected to the bottom of the roller bracket 7, a guide sleeve 3 is arranged at the right end of the roller bracket 7, and a bending die lower template 8 is arranged below the bending die upper template 2;

[0019] A pressing hook punch 9 is arranged at the middle upper end of the lower mold plate 8 of the pressing and bending die, a support plate 11 is arranged at the left end of the pressing hook punch 9, a pressing and bending groove 15 is arranged at the right end of the pressing and bending groove 15, and a guide column 10 is arranged on the right side of the pressing and bending groove 15;

[0020] A compression spring 5 is arranged below the middle of the upper template 2 of the bending die, and a clamping punch 4 is connected below the compression spring 5. The clamping punch 4 is connected to the upper template 2 of the bending die through a clamping punch end positioning plate 6 and a clamping punch side positioning plate 12. The bottom wall of the clamping punch 4 is an inclined surface. A roller bracket 7 is arranged on the right side of the clamping punch 4. A roller 13 is arranged at the bottom of the roller bracket 7. The roller 13 is connected to the roller bracket 7 through a bearing. The roller 13 can rotate 360 degrees. A bending die lower template 8 is arranged below the bending die upper template 2. A pressing hook punch 9 is arranged in the 8th part of the bending die lower template. The top wall of the pressing hook punch 9 is an inclined surface. The pressing hook punch 9 is fixedly connected to the bending die lower template 8 through bolts. A support plate 11 is fixedly arranged on the left side of the pressing hook punch 9. A locating pin 111 is provided at the left end of the support plate 11. During use, the leaf spring can be placed above the support plate 11 and the locating hole on the leaf spring is concentric with the locating pin 111 to complete the positioning of the leaf spring. Subsequently, the upper template 2 of the bending die is pressed down by the die handle 1. The upper template 2 of the bending die is pressed down and the pressing punch 4, the roller bracket 7 and the roller 13 are pressed down at the same time. The pressing punch 4 can apply a certain pressure to the leaf spring under the action of the compression spring 5 to prevent the leaf spring from sliding. At the same time, the roller bracket 7 and the roller 13 are pressed down to complete the bending of the leaf spring. During use, the pressing hook punch 9 can be replaced according to the bending angle of the leaf spring to adapt to the bending of different types of leaf springs. In addition, the leaf spring can be prevented from sliding during the bending process under the action of the pressing punch 4, which improves the bending accuracy.

[0021] like Figure 1 As shown, the roller 13 is connected to the roller bracket 7 through a bearing; by arranging the roller 13 at the lower end of the roller bracket 7, the roller 13 can rotate 360°, and the leaf spring is located below the roller bracket 7 and the roller 13 during use. During the pressing process, the rotation of the roller 13 can facilitate the pressing of the roller bracket 7 and the roller 13 and help the bending of the leaf spring.

[0022] like Figure 1 The roller bracket and the upper template of the bending die are an integrated structure.

[0023] like Figure 3As shown, a locating pin fixing plate 112 is provided at the left end of the support plate 11, and the locating pin fixing plate 112 is fixedly connected to the support plate 11 by a fixing screw 110, and a locating pin 111 is fixedly provided at the middle upper end of the locating pin fixing plate 112; by arranging the locating pin fixing plate 112 at the left end of the support plate 11, a locating pin 111 is provided at the middle upper end of the locating pin fixing plate 112, the locating pin 111 and the locating pin fixing plate 112 are an integrated structure, and the locating pin fixing plate 112 is fixedly connected to the support plate 11 by the fixing screw 110 and the fixing nut 113. During use, the leaf spring is placed above the support plate 11 and the locating hole opened on the leaf spring is concentric with the locating pin 111 to complete the positioning of the leaf spring. After the leaf spring is positioned, the bending accuracy of the leaf spring can be improved.

[0024] like Figure 1 , the top surface of the pressing hook punch 9 is an inclined surface; by setting the top surface of the pressing hook punch 9 to an inclined surface, the inclined surface angle is the required bending angle of the leaf spring, and the pressing hook punch 9 is fixedly connected to the lower template 8 of the bending mold by bolts. During use, a suitable pressing hook punch 9 can be selected according to the requirements of different bending angles of leaf springs and fixedly connected to the lower template 8 of the bending mold.

[0025] When the utility model is implemented: first, it is necessary to select a suitable pressing hook punch 9 according to the bending angle of the leaf spring, then the pressing hook punch 9 is fixedly connected to the lower template 8 of the pressing and bending mold by fixing bolts, and a suitable support plate 11 is selected according to the length of the leaf spring and the position of the positioning hole, and the leaf spring is placed on the support plate 11. At the same time, the positioning hole opened on the leaf spring is concentric with the positioning pin 111 to complete the positioning of the leaf spring, and then the upper template 2 of the pressing and bending mold is pressed down by the mold handle 1, and the upper template 2 of the pressing and bending mold is pressed down, and at the same time, the pressing punch 4, the roller bracket 7 and the roller 13 are pressed down, and the pressing punch 4 Under the action of the compression spring 5, a certain pressure can be applied to the leaf spring to prevent it from sliding. At the same time, the roller bracket 7 and the roller 13 press down to complete the bending of the leaf spring. During the pressing process of the roller 13, the roller rotates 360° due to the friction between the roller 13 and the leaf spring. During the bending process of the leaf spring, the bent portion can be located in the bending groove 15. After the bending of the leaf spring is completed, the mold handle 1 is lifted to touch the upper template 2 and the leaf spring is taken out from the positioning pin 111. In general, the utility model has the advantages of simple structure, easy use, and adaptability to the bending processing of leaf springs of different models.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A bending forming die for an automobile leaf spring, comprising a forming die body (0), characterized in that: The upper part of the molding die body (0) is provided with a bending die upper template (2), the lower end of the middle part of the bending die upper template (2) is provided with a compression spring (5), the lower end of the compression spring (5) is provided with a pressing punch (4), the left end of the pressing punch (4) is provided with a pressing punch end positioning plate (6), the upper fixing screw of the pressing punch end positioning plate (6) is fixedly connected to the bottom of the bending die upper template (2), the right end of the pressing punch (4) is provided with a roller bracket (7), the bottom of the roller bracket (7) is connected with a roller (13), the right end of the roller bracket (7) is provided with a guide sleeve (3), and the lower end of the bending die upper template (2) is provided with a bending die lower template (8); A pressing hook punch (9) is arranged at the middle upper end of the lower mold plate (8) of the pressing and bending die, a support plate (11) is arranged at the left end of the pressing and bending punch (9), a pressing and bending groove (15) is arranged at the right end of the pressing and bending groove (15), and a guide column (10) is arranged on the right side of the pressing and bending groove (15).

2. The automobile leaf spring bending forming die according to claim 1, characterized in that: The roller (13) is connected to the roller support (7) via a bearing.

3. The automobile leaf spring bending forming die according to claim 2, characterized in that: The roller bracket (7) and the upper mold plate (2) of the bending mold are an integrated structure.

4. The automobile leaf spring bending forming die according to claim 1, characterized in that: A positioning pin fixing plate (112) is provided at the left end of the support plate (11), the positioning pin fixing plate (112) is fixedly connected to the support plate (11) via fixing screws (110), and a positioning pin (111) is fixedly provided at the middle upper end of the positioning pin fixing plate (112).

5. The automobile leaf spring bending forming die according to claim 1, characterized in that: The top surface of the hook pressing punch (9) is an inclined surface.