Quick-change type die for back plate of automobile brake pad

Abstract

The invention discloses a quick-change die for an automobile brake pad back plate. The quick-change die comprises a die base body structural part, a stamping die body and a plurality of replaceable inserts, and the stamping die body is mounted at the die base body structural part through bolts; the die base body structural part is made of 45 # steel, and the stamping die body and the replaceable insert are made of Cr12Mov steel which is subjected to heat treatment until the hardness of the Cr12Mov steel is HRC 58-60. According to the quick-change die for the back plate of the automobile brake pad, high-hardness and high-wear-resistance materials are adopted to be used for the stamping die body and the replaceable insert, materials good in toughness and low in cost are selected for the structural part of the die base body, and optimization of the overall performance of the die is achieved by using the materials with different performances in a combined mode. According to the mode, the advantages of flexibility and low cost of mounting the replaceable insert to the stamping die body are kept, the service life of the die is effectively prolonged, the integrity and consistency of sample piece production are ensured, and the requirements of customers for sample quality and development efficiency are further met.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and specifically to a quick-change die for automotive brake pad backplates. Background Technology

[0002] During the product development phase, to meet customers' high requirements for sample quality and quantity, traditional manual sample making is insufficient due to its low efficiency and poor precision. The usual solution is to directly create mass production molds for sample production, but this undoubtedly increases development costs significantly.

[0003] To address this contradiction, existing technologies have developed universal mold base solutions, such as those disclosed in Chinese Patent CN202323287619.9, which utilize replaceable inserts to adapt to different products, thereby reducing development costs and shortening the cycle. However, the inserts in such solutions often suffer from insufficient structural strength or material wear resistance, resulting in a short overall mold life. These molds frequently fail before a certain number of prototypes are produced, requiring mold repair or re-molding, thus impacting the reliability and economy of prototype development.

[0004] Therefore, there is an urgent need for a sample production solution that can both control costs and ensure that the mold has a sufficient service life. Summary of the Invention

[0005] This invention addresses the problem of short lifespan of insert dies in existing general-purpose die sets by proposing a quick-change die for automotive brake pad backing plates. By optimizing the material combination of the die inserts, the service life and stability of the stamping die are significantly improved without substantially increasing costs.

[0006] To achieve the above objectives, the following solution is provided: a quick-change mold for automotive brake pad backplate, comprising a mold base structure, a stamping die body, and several replaceable inserts, wherein the stamping die body is bolted to the mold base structure. The mold base structure is made of 45 steel, and the stamping die body and replaceable inserts are made of Cr12Mov steel that has been heat-treated to a hardness of HRC 58-60.

[0007] Furthermore, the mold base structure includes a universal base plate, a universal pad plate, a universal ejector plate, a universal fixing plate, and a universal cover plate. The universal fixing plate is fixedly installed at the bottom of the universal cover plate by bolts. The universal ejector plate is slidably installed at the bottom of the universal fixing plate by movable bolts, and a buffer block is installed between the universal ejector plate and the universal fixing plate. A universal pad plate is provided at the bottom of the universal ejector plate.

[0008] Furthermore, the stamping die body includes a universal concave die and a universal convex die. The universal concave die is adapted to the universal convex die. The universal convex die is fixedly installed on the universal fixing plate by fixing bolts and passes through the universal ejector plate. The universal concave die is fixedly installed on the universal base plate by bolts.

[0009] Furthermore, the replaceable insert is located at the appropriate position of the universal base plate, universal pad plate, universal ejector plate, universal fixing plate, universal cover plate, universal concave template, and universal convex template.

[0010] The working principle and advantages of this invention are as follows: This quick-change mold for automotive brake pad backplates uses high-hardness, high-wear-resistant materials for the stamping die body and replaceable inserts, while the mold base structure uses materials with good toughness and lower cost. By combining materials with different properties, the overall performance of the mold is optimized. This approach not only maintains the flexibility and low-cost advantage of installing replaceable inserts into the stamping die body, but also effectively extends the mold life, ensures the integrity and consistency of sample production, and further meets customer requirements for sample quality and development efficiency. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the present invention.

[0012] The reference numerals in the accompanying drawings include: 1. Universal base plate, 2. Universal concave template, 3. Universal pad, 4. Universal ejector plate, 5. Universal fixing plate, 6. Universal cover plate, 7. Universal convex template, 8. Buffer block, 9. Fixing bolt, 10. Guide post, 11. Movable bolt. Detailed Implementation

[0013] The following detailed explanation illustrates the specific implementation methods: like Figure 1 As shown: A quick-change mold for automotive brake pad backplates, the core of which lies in the use of differentiated materials for the mold base structure, the stamping die body, and the replaceable inserts: the mold base structure includes a universal cover plate 6, a universal fixing plate 5, a universal ejector plate 4, a universal pad 3, and a universal base plate 1, all made of 45# steel with low cost and good processing performance, to ensure overall structural strength and economy. The universal fixing plate 5 is fixedly installed at the bottom of the universal cover plate 6 by bolts. The universal ejector plate 4 is slidably installed at the bottom of the universal fixing plate 5 by movable bolts 11, so that the universal ejector plate 4 can move up and down without detaching from the universal fixing plate 5. A buffer block 8 is installed between the universal ejector plate 4 and the universal fixing plate 5. The buffer block 8 is made of urethane rubber and has a certain elasticity, which is used for the springback reset of the universal ejector plate 4. A universal pad 3 is provided at the bottom of the universal ejector plate 4. The key working components that directly participate in the forming process and bear the main wear, such as the stamping die body and the corresponding replaceable inserts, are made of high-hardness, high-wear-resistant Cr12Mov steel and are heat-treated to achieve a hardness of HRC 58-60. The stamping die body includes a universal concave die 2 and a universal convex die 7. The universal convex die 7 is fixed to the universal fixed plate 5 by fixing bolts 9, and the universal concave die 2 is installed on the universal base plate 1 by bolts. Each replaceable insert is installed on the corresponding part of the die by bolts. The guide post 10 fixed on the universal fixed plate 5 is inserted into the guide hole of the universal concave die 2, making the die closing more precise.

[0014] By using different materials for the different parts, the mold base has obtained the necessary toughness support, while the key wear parts have excellent wear resistance, thereby optimizing the overall performance of the mold.

[0015] This quick-change mold for automotive brake pad backplates uses high-hardness, high-wear-resistant materials for the stamping die body and replaceable inserts, while the die base structure uses materials with good toughness and lower cost. By combining materials with different properties, the overall performance of the mold is optimized. This approach not only maintains the flexibility and low-cost advantage of installing replaceable inserts into the stamping die body, but also effectively extends the mold life, ensures the integrity and consistency of prototype production, and further meets customer requirements for sample quality and development efficiency.

[0016] The above description is merely an embodiment of the present invention. Commonly known structures and characteristics of the solutions are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the applicability of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A quick-change mold for automotive brake pad backing plates, characterized in that: The mold base structure, the stamping die body, and several replaceable inserts, wherein the stamping die body is bolted to the mold base structure; The mold base structure is made of 45 steel, and the stamping die body and replaceable inserts are made of Cr12Mov steel that has been heat-treated to a hardness of HRC 58-60.

2. The quick-change mold for automotive brake pad backing plate according to claim 1, characterized in that: The mold base structure includes a universal base plate, a universal pad plate, a universal ejector plate, a universal fixing plate, and a universal cover plate. The universal fixing plate is fixedly installed at the bottom of the universal cover plate by bolts. The universal ejector plate is slidably installed at the bottom of the universal fixing plate by movable bolts, and a buffer block is installed between the universal ejector plate and the universal fixing plate. A universal pad plate is provided at the bottom of the universal ejector plate.

3. The quick-change mold for automotive brake pad backing plate according to claim 2, characterized in that: The stamping die body includes a universal concave die and a universal convex die. The universal concave die is adapted to the universal convex die. The universal convex die is fixedly installed on the universal fixing plate by fixing bolts and passes through the universal ejector plate. The universal concave die is fixedly installed on the universal base plate by bolts.

4. The quick-change mold for automotive brake pad backing plate according to claim 3, characterized in that: The replaceable insert is located at the appropriate position on the universal base plate, universal pad plate, universal ejector plate, universal fixing plate, universal cover plate, universal concave template, and universal convex template.

5. The quick-change mold for automotive brake pad backing plate according to claim 3, characterized in that: A guide post is fixedly installed at the universal fixing plate, and a guide hole adapted to the guide post is provided at the universal concave template.

Images