A new type of injection mold for automotive parts

Abstract

This utility model discloses a novel injection mold for automotive parts, including a base plate. A pin plate is disposed on the upper surface of the base plate. Protective shells are symmetrically disposed on both sides of the pin plate on the upper surface of the base plate. Mold corners are disposed on all four sides of the pin plate on the upper surface of the base plate. Several slots are formed on one side of the rear mold corner. A moving mold is disposed on the upper surface of the pin plate. A fixed mold is disposed on the upper surface of the moving mold. Two sets of runner plates are symmetrically disposed on the upper surface of the fixed mold. A top plate is disposed on the upper surface of the runner plates. A closing groove is formed inside the moving mold. This utility model effectively reduces direct friction between the mold cavity and the closing groove by installing wear-resistant plates in the inclined groove on the outer wall of the mold cavity. During the mold closing process, the wear-resistant plates contact the inner wall of the closing groove, thus improving the service life of the mold. Because the wear-resistant plates are made of special steel, they have good wear resistance and hardness, and can withstand greater friction and pressure.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts injection mold technology, and in particular relates to a novel automotive parts injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product. In the processing of automotive parts, injection molds are required to process automotive parts.

[0003] In existing molds, during the mold closing process between the moving and fixed molds, the outer wall (sloping surface) of the mold cavity directly contacts and rubs against the inner wall of the mold groove. This direct friction leads to rapid wear, scratches, and even deformation of the contact surfaces. This results in a rapid decrease in mold precision, a shortened service life, and the need for frequent repairs or replacement of core components, leading to high maintenance costs. Therefore, a novel injection mold for automotive parts is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a new type of injection mold for automotive parts to solve existing problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a novel injection mold for automotive parts, comprising a base plate, a needle plate on the upper surface of the base plate, protective shells symmetrically arranged on both sides of the needle plate on the upper surface of the base plate, mold corners on all four sides of the needle plate on the upper surface of the base plate, a plurality of slots on one side of the rear mold corner, a moving mold on the upper surface of the needle plate, a fixed mold on the upper surface of the moving mold, two sets of runner plates symmetrically arranged on the upper surface of the fixed mold, a top plate on the upper surface of the runner plates, a fitting groove inside the moving mold, a contour block inside the fitting groove, mounting holes at all four corners of the upper surface of the moving mold, positioning pins inside the mounting holes, a contour cavity on the upper surface of the fixed mold, mounting grooves on all four sides of the outer wall of the contour cavity, wear-resistant plates inside the mounting grooves, and positioning holes at all four corners of the upper surface of the fixed mold.

[0007] Furthermore, the protective shell is provided at the protruding positions on both sides of the needle plate and protects the protruding positions on both sides of the needle plate. The position of the positioning post is adapted to the position of the positioning hole, the shape and size of the positioning hole are adapted to the positioning post, and the positioning post is set in the positioning hole.

[0008] Furthermore, the four sides of the outer wall of the contour cavity are inclined, the wear-resistant sheet is made of special steel, the surface of the wear-resistant sheet is in contact with the inner wall of the groove, and the shape and size of the contour cavity are adapted to the contour block.

[0009] This utility model has the following beneficial effects:

[0010] This invention utilizes a wear-resistant plate installed in a groove on the inclined surface of the outer wall of the mold cavity. During mold closing, the wear-resistant plate contacts the inner wall of the groove, effectively reducing direct friction between the mold cavity and the groove, thus extending the mold's lifespan. The wear-resistant plate, made of special steel, possesses excellent wear resistance and hardness, capable of withstanding significant friction and pressure. Even under frequent friction and impact during long-term mold closing and opening, the wear-resistant plate maintains good performance and is not easily damaged. Furthermore, the surface of the wear-resistant plate adheres closely to the inner wall of the groove, ensuring a tighter and more stable mold closing process between the moving and fixed molds. This close fit design ensures mold precision, reduces plastic leakage during injection molding, and improves the molding quality of automotive parts. Additionally, the protective shell, positioned at protruding points on both sides of the needle plate, effectively prevents damage from external impacts, providing protection. The runner plate employs a split structure, facilitating processing and preventing deformation during manufacturing. The split runner plate also facilitates later maintenance and replacement. When a part of the flow channel plate is damaged, only the corresponding component needs to be replaced, instead of replacing the entire flow channel plate. This effectively reduces maintenance costs and time.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of the overall structure of a novel injection mold for automotive parts;

[0014] Figure 2 An exploded view of an injection mold for a novel automotive part;

[0015] Figure 3 This is a schematic diagram of the overall structure of the fixed mold in this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the moving mold in this utility model.

[0017] The components represented by each number in the attached diagram are listed below: 1. Base plate; 10. Mold corner; 101. Needle plate; 102. Protective shell; 103. Moving mold; 1030. Mounting hole; 104. Positioning pin; 105. Grinding groove; 106. Empty groove; 107. Copying block; 21. Fixed mold; 210. Copying cavity; 211. Mounting groove; 212. Positioning hole; 201. Flow channel plate; 2. Top plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figures 1-4 As shown, this utility model is a novel injection mold for automotive parts, including a base plate 1, a needle plate 101 disposed on the upper surface of the base plate 1, protective shells 102 symmetrically disposed on both sides of the needle plate 101 on the upper surface of the base plate 1, mold corners 10 disposed on all four sides of the needle plate 101 on the upper surface of the base plate 1, and a plurality of slots 106 opened on one side of the rear mold corner 10, a moving mold 103 disposed on the upper surface of the needle plate 101, a fixed mold 21 disposed on the upper surface of the moving mold 103, two sets of runner plates 201 symmetrically disposed on the upper surface of the fixed mold 21, and a top plate 2 disposed on the upper surface of the runner plates 201.

[0022] Furthermore, the moving mold 103 has a groove 105, and a contour block 107 is provided in the groove 105. The moving mold 103 has mounting holes 1030 at each of the four corners of its upper surface, and positioning pins 104 are provided in the mounting holes 1030. The fixed mold 21 has a contour cavity 210 on its upper surface, and mounting grooves 211 are provided on each of the four sides of the outer wall of the contour cavity 210. Wear-resistant plates are provided in each of the mounting grooves 211. The fixed mold 21 has positioning holes 212 at each of the four corners of its upper surface.

[0023] Furthermore, the protective shell 102 is set at the protruding positions on both sides of the needle plate 101 and protects the protruding positions on both sides of the needle plate 101. The position of the positioning post 104 is adapted to the position of the positioning hole 212. The shape and size of the positioning hole 212 are adapted to the positioning post 104. The positioning post 104 is set in the positioning hole 212. The four sides of the outer wall of the contour cavity 210 are inclined. The wear-resistant plate is made of special steel material. The surface of the wear-resistant plate is in contact with the inner wall of the groove 105. The shape and size of the contour cavity 210 are adapted to the contour block 107.

[0024] It should be noted that this invention, by installing a wear-resistant plate within the inclined mounting groove 211 on the outer wall of the contour cavity 210, allows the wear-resistant plate to contact the inner wall of the groove 105 during mold closing, effectively reducing direct friction between the contour cavity 210 and the groove 105 and improving the mold's service life. Because the wear-resistant plate is made of special steel, it possesses excellent wear resistance and hardness, capable of withstanding significant friction and pressure. Even under frequent friction and impact during long-term mold closing and opening, the wear-resistant plate maintains good performance and is not easily damaged. Simultaneously, the wear-resistant plate's surface adheres closely to the inner wall of the groove 105, making the mold closing of the moving mold 103 and the fixed mold 21 more compact and stable. This close fit design ensures mold precision, reduces plastic leakage during injection molding, and thus improves the molding quality of automotive parts. Meanwhile, the protective shell 102, positioned at protruding locations on both sides of the needle plate 101, effectively prevents damage to the needle plate 101 from external impacts, thus providing protection. The flow channel plate 201 employs a split structure, which facilitates processing and avoids deformation during manufacturing. The split design of the flow channel plate 201 also facilitates later maintenance and replacement. When a portion of the flow channel plate 201 is damaged, only the corresponding split component needs to be replaced, rather than replacing the entire flow channel plate 201, effectively reducing maintenance costs and time.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel injection mold for automotive parts, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is provided with a needle plate (101). The upper surface of the base plate (1) is symmetrically provided with protective shells (102) on both sides of the needle plate (101). The upper surface of the base plate (1) is provided with mold corners (10) on all four sides of the needle plate (101). Several slots (106) are opened on one side of the rear mold corner (10). The upper surface of the needle plate (101) is provided with a moving mold (103). The upper surface of the moving mold (103) is provided with a fixed mold (21). The upper surface of the fixed mold (21) is symmetrically provided with two sets of flow channel plates (201). The upper surface of the flow channel plate (201) is provided with a top plate (2).

2. The novel injection mold for automotive parts according to claim 1, characterized in that, The moving mold (103) has a groove (105) inside, and a contour block (107) is provided in the groove (105). The moving mold (103) has mounting holes (1030) at the four corners of its upper surface, and a positioning post (104) is provided in the mounting hole (1030).

3. A novel injection mold for automotive parts according to claim 2, characterized in that, The upper surface of the fixed mold (21) is provided with a contour cavity (210), and the four sides of the outer wall of the contour cavity (210) are provided with mounting grooves (211). Wear-resistant plates are provided in the mounting grooves (211), and positioning holes (212) are provided at the four corners of the upper surface of the fixed mold (21).

4. The novel injection mold for automotive parts according to claim 1, characterized in that, The protective shell (102) is located on the protruding positions on both sides of the needle plate (101) and protects the protruding positions on both sides of the needle plate (101).

5. A novel injection mold for automotive parts according to claim 3, characterized in that, The position of the positioning post (104) is adapted to the position of the positioning hole (212), the shape and size of the positioning hole (212) are adapted to the positioning post (104), and the positioning post (104) is set inside the positioning hole (212).

6. A novel injection mold for automotive parts according to claim 3, characterized in that, The outer wall of the contour cavity (210) has four inclined surfaces, the wear-resistant sheet is made of special steel, the surface of the wear-resistant sheet is in contact with the inner wall of the groove (105), and the shape and size of the contour cavity (210) are adapted to the contour block (107).

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