Rearview mirror key assembly injection mold

Abstract

The utility model discloses a rearview mirror key assembly injection mold, which comprises a first upper mold assembly, a second upper mold assembly and two groups of lower mold assemblies with the same structure, each lower mold assembly comprises a movable mold plate, a convex mold, a forming insert and an ejection mechanism, and the forming insert is embedded in the convex mold and is matched with a bottom cover in shape; a plurality of inclined grooves are formed in the peripheral wall of the forming insert in the contour direction and penetrate through the forming insert in the mold opening and closing direction, a plurality of guide blocks corresponding to the push rods in position are arranged at the bottom of the movable mold plate, inclined holes are formed in the guide blocks, the push rods are slidably installed in the inclined holes, and the lower ends of the push rods are connected to the push plate; according to the mold, the push rods are distributed in the contour direction of the forming insert, the push rods act on the edge of an inner cavity of a bottom cover during parting, stress is uniform, demolding can be achieved easily, and product damage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an injection mold for a rearview mirror button assembly. Background Technology

[0002] Injection molds are tools used to produce plastic products. Specifically, they involve injecting molten plastic into a mold cavity under high pressure using an injection molding machine, where it cools and solidifies to obtain a product with a specific shape. However, most existing injection molds are single-color molds, meaning the product uses only one material. For special products made with two types of plastic materials, two-color molds are required.

[0003] like Figure 10 The rearview mirror button assembly shown includes a bottom cover a and a transparent button b. During production, the bottom cover a part of the first color is first injection molded. The lower mold of the first color is then moved to the lower mold of the second color for injection molding of the transparent button b. Finally, the finished product is ejected by the ejection mechanism of the lower mold. However, in the existing ejection method, the ejector pins are all positioned in the middle area of ​​the bottom of the finished product. Some finished products are stuck to the lower mold and are difficult to eject. Forcing the product out with the ejector pins can easily damage the finished product. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide an injection mold for a rearview mirror button assembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rearview mirror button assembly injection mold, comprising a first upper mold assembly, a second upper mold assembly, and two sets of identical lower mold assemblies. The two sets of lower mold assemblies are respectively adapted to the first upper mold assembly and the second upper mold assembly to form two mold sets. The mold set composed of the first upper mold assembly and the lower mold assembly is used for injection molding the bottom cover, and the mold set composed of the second upper mold assembly and the lower mold assembly with the bottom cover is used for injection molding transparent buttons on the bottom cover. The lower mold assembly includes a moving template, a punch, a forming insert, and an ejection mechanism. The forming insert is embedded in the punch and the shape of the forming insert is adapted to the bottom cover. The ejection mechanism includes a push plate and a push rod. The outer peripheral wall of the forming insert is provided with several inclined grooves along the contour direction. The inclined grooves penetrate the forming insert along the opening and closing direction of the mold. The bottom of the moving template is provided with several guide blocks corresponding to the position of the push rod. The guide blocks are provided with inclined holes. The inclined grooves and inclined holes are inclined in the same direction. The push rod is slidably installed in the inclined hole. The lower end of the push rod is connected to the push plate. The part of the push rod that passes through the moving template and the punch and is located above the inclined hole is slidably installed in the inclined groove.

[0006] As a preferred technical solution of this utility model, the bottom of the moving template is provided with several positioning grooves, and the guide block is embedded in the positioning grooves and connected by fasteners.

[0007] As a preferred technical solution of this utility model, the push plate is provided with a plurality of fixing blocks corresponding to the push rod, and the fixing blocks are provided with slots through them with the slot openings facing upwards. The lower end of the push rod has an insert block that is mounted on the side in the slot.

[0008] As a preferred technical solution of this utility model, both the first upper mold assembly and the second upper mold assembly include a fixed mold plate and a concave mold. In the mold-closed state, the punch and the concave mold cooperate and form a molding cavity for injection molding the rearview mirror button assembly.

[0009] As a preferred technical solution of this utility model, a forming groove is provided in the cavity of the first upper mold assembly, and a plurality of inserts adapted to the shape of the transparent button are provided in the cavity. The plurality of inserts extend at least partially into the forming groove and the outer end faces of the portion of the plurality of inserts extending into the forming groove are flush.

[0010] As a preferred technical solution of this utility model, a forming groove is provided in the cavity of the second upper mold assembly, and a plurality of inserts adapted to the shape of the transparent button are provided in the cavity, with the ends of the plurality of inserts being flush with the bottom wall of the forming groove.

[0011] As a preferred technical solution of this utility model, the concave mold is provided with a plurality of assembly holes corresponding to the insert on the side away from the forming groove, and the assembly holes are interference fit with the insert.

[0012] As a preferred embodiment of the present invention, the second upper mold assembly includes a dispensing frame corresponding to the concave mold, the dispensing frame being provided with a dispensing port, and the dispensing frame including a plurality of dispensing tubes corresponding to each insert, the lower end of the dispensing tubes being flush with the lower end surface of the insert.

[0013] In summary, the beneficial effects of this utility model are as follows: the push rods are distributed along the contour direction of the molding insert, and when the mold is separated, the push rods act on the edge of the inner cavity of the bottom cover, so the force is uniform, which can achieve easy demolding and avoid product damage. The push rods are installed at an angle on the guide block, and when the push rods are ejected, they are ejected upward along the inclined groove of the molding insert, so the transmission is stable and reliable and avoids shaking. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the punch and die in this utility model.

[0016] Figure 3 This is a schematic diagram of the punch structure in this utility model;

[0017] Figure 4 This is a schematic diagram of the concave mold structure of the first upper mold assembly in this utility model;

[0018] Figure 5 This is a schematic diagram of the concave mold of the first upper mold assembly in this utility model from another perspective.

[0019] Figure 6 This is a schematic diagram of the ejection mechanism in this utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the moving template in this utility model;

[0021] Figure 8 This is a schematic diagram of the concave mold structure of the second upper mold assembly in this utility model;

[0022] Figure 9 This is a schematic diagram of the concave mold structure of the second upper mold assembly in this utility model;

[0023] Figure 10 This is a schematic diagram of the rearview mirror button assembly in the background art.

[0024] Reference numerals: 1. First upper mold assembly; 2. Second upper mold assembly; 3. Lower mold assembly; 4. Moving template; 5. Punch; 6. Forming insert; 7. Ejection mechanism; 8. Push plate; 9. Push rod; 10. Inclined groove; 11. Guide block; 12. Inclined hole; 13. Positioning groove; 14. Fixing block; 15. Slot; 16. Insert block; 17. Fixed template; 18. Die; 19. Forming groove; 20. Insert; 21. Assembly hole; 22. Dispensing frame; 23. Injection port; 24. Dispensing tube. Detailed Implementation

[0025] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0027] like Figures 1 to 10The rearview mirror button assembly injection mold shown includes a first upper mold assembly 1, a second upper mold assembly 2, and two sets of identical lower mold assemblies 3. The two sets of lower mold assemblies 3 are respectively adapted to the first upper mold assembly 1 and the second upper mold assembly 2 to form two mold sets. The mold set composed of the first upper mold assembly 1 and the lower mold assembly 3 is used for injection molding the bottom cover. The mold set composed of the second upper mold assembly 2 and the lower mold assembly 3 with the bottom cover is used for injection molding transparent buttons on the bottom cover. The lower mold assembly 3 includes a moving template 4, a punch 5, a molding insert 6, and an ejection mechanism 7. The punch 5 is embedded in the moving template 4, and the molding insert 6 is embedded in the punch 5 and the shape of the molding insert 6 is adapted to the bottom cover. The ejection mechanism 7 includes a push plate 8 and a push rod 9. The outer peripheral wall of the molding insert 6 is provided with several inclined grooves 10 along the contour direction. The inclined grooves 10 penetrate the molding insert 6 along the mold opening and closing direction. The bottom of the moving template 4 is provided with several guide blocks 11 corresponding to the position of the push rod 9. The guide blocks 11 are provided with inclined holes 12. The inclined grooves 10 and the inclined holes 12 are inclined in the same direction. The push rod 9 is slidably installed in the inclined holes 12. The lower end of the push rod 9 is connected to the push plate 8. The part of the push rod 9 that passes through the moving template 4 and the punch 5 and is located above the inclined holes 12 is slidably installed in the inclined grooves 10. This embodiment is an injection mold. Its basic functions and principles are known to the public. Not all structures will be described in detail.

[0028] The push rod 9 is distributed along the contour direction of the molding insert 6. During parting, the push rod 9 acts on the edge of the inner cavity of the bottom cover, and the force is even, which can achieve easy demolding and avoid product damage. The push rod 9 is installed at an angle on the guide block 11. When the push rod 9 is ejected, it is ejected upward along the inclined groove 10 of the molding insert 6. The transmission is stable and reliable, and shaking is avoided.

[0029] The bottom of the moving template 4 is provided with several positioning grooves 13. The guide block 11 is embedded in the positioning groove 13 and connected by fasteners such as screws and bolts. The push plate 8 is provided with several fixing blocks 14 corresponding to the push rod 9. The fixing block 14 is provided with a slot 15 through it and the slot 15 opening is facing upward. The lower end of the push rod 9 has a plug 16 that is side-mounted in the slot 15. Since the push rod 9 is tilted at a small angle, the traditional method of drilling holes in the push plate 8 is not convenient for installing the tilted push rod 9. In this embodiment, the push rod 9 is side-mounted at the lower end, which can be directly inserted into the fixing block 14 and can be finely adjusted to ensure the installation position of the push rod 9.

[0030] Both the first upper mold assembly 1 and the second upper mold assembly 2 include a fixed mold plate 17 and a cavity mold 18. In the closed state, the punch 5 and the cavity mold 18 cooperate to form a molding cavity for injection molding the rearview mirror button assembly. In this embodiment, only the fixed mold plate 17 and the cavity mold 18 are described in the upper mold assembly. Other structures of the upper mold assembly are existing technologies and therefore are not described in detail. The product is injected into the molding cavity formed by the cavity mold 18 and the punch 5. The cavity mold 18 is provided with a dispensing hole that communicates with the molding cavity.

[0031] The first upper mold assembly 1 has a molding groove 19 in the cavity mold 18 and a plurality of inserts 20 adapted to the shape of the transparent button in the cavity mold 18. The plurality of inserts 20 extend at least partially into the molding groove 19 and the outer end face of the portion of the plurality of inserts 20 extending into the molding groove 19 is flush with the portion of the molding groove 19, so as to form the hole position of the transparent button during the injection molding of the bottom cover.

[0032] The second upper mold assembly 2 has a forming groove 19 in the cavity 18 and a number of inserts 20 adapted to the shape of the transparent button in the cavity 18. The ends of the inserts 20 are flush with the bottom wall of the forming groove 19. The formed bottom cover is placed on the forming insert 6. During injection molding, the second upper mold assembly 2 is replaced. When the punch 5 and the cavity 18 are engaged, each insert 20 is located above the transparent button and flush with the upper surface of the bottom cover.

[0033] The second upper mold assembly 2 includes a dispensing frame 22 corresponding to the cavity mold 18. The dispensing frame 22 is provided with a glue injection port 23. The dispensing frame 22 includes a plurality of dispensing tubes 24 corresponding to each insert 20. The cavity mold 18 is provided with a plurality of assembly holes 21 corresponding to the inserts 20 on the side away from the molding groove 19. The assembly holes 21 are interference-fitted with the inserts 20. Each insert 20 is injection molded through the dispensing frame 22. In this embodiment, each insert 20 is provided with an injection channel. The dispensing tubes 24 are inserted into the injection channel and the lower end of the dispensing tubes 24 is flush with the lower end face of the insert 20. How the dispensing frame 22 is installed in this embodiment is prior art and is not the focus of this application, so it is not described in detail.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A rearview mirror button assembly injection mold, comprising a first upper mold assembly (1), a second upper mold assembly (2), and two sets of identical lower mold assemblies (3), wherein the two sets of lower mold assemblies (3) are respectively adapted to the first upper mold assembly (1) and the second upper mold assembly (2) to form two mold sets, characterized in that: The mold assembly consisting of the first upper mold assembly (1) and the lower mold assembly (3) is used for injection molding the bottom cover. The mold assembly consisting of the second upper mold assembly (2) and the lower mold assembly (3) with the bottom cover is used for injection molding transparent buttons on the bottom cover. The lower mold assembly (3) includes a moving template (4), a punch (5), a molding insert (6), and an ejection mechanism (7). The molding insert (6) is embedded in the punch (5) and the molding insert (6) is adapted to the shape of the bottom cover. The ejection mechanism (7) includes a push plate (8) and a push rod (9). The outer peripheral wall of the molding insert (6) is provided with several inclined grooves along the contour direction. 10), the inclined groove (10) passes through the forming insert (6) along the mold opening and closing direction, the bottom of the moving template (4) is provided with a number of guide blocks (11) corresponding to the position of the push rod (9), the guide block (11) is provided with an inclined hole (12), the inclined groove (10) and the inclined hole (12) are inclined in the same direction, the push rod (9) is slidably installed in the inclined hole (12), the lower end of the push rod (9) is connected to the push plate (8), the push rod (9) passes through the moving template (4) and the punch (5) and the part of the push rod (9) located above the inclined hole (12) is slidably installed in the inclined groove (10).

2. The injection mold for the rearview mirror button assembly according to claim 1, characterized in that: The bottom of the moving template (4) is provided with several positioning grooves (13), and the guide block (11) is embedded in the positioning grooves (13) and connected by fasteners.

3. The injection mold for the rearview mirror button assembly according to claim 2, characterized in that: The push plate (8) is provided with a plurality of fixing blocks (14) corresponding to the push rod (9). The fixing block (14) is provided with a slot (15) through it and the slot (15) opening is facing upward. The lower end of the push rod (9) has an insert (16) that is mounted on the side in the slot (15).

4. The injection mold for the rearview mirror button assembly according to claim 3, characterized in that: The first upper mold assembly (1) and the second upper mold assembly (2) both include a fixed mold plate (17) and a cavity mold (18). In the mold closed state, the punch (5) and the cavity mold (18) cooperate and form a molding cavity for injection molding the rearview mirror button assembly.

5. The injection mold for the rearview mirror button assembly according to claim 4, characterized in that: The first upper mold assembly (1) has a forming groove (19) in the cavity (18), and a plurality of inserts (20) adapted to the shape of the transparent button are provided in the cavity (18). The plurality of inserts (20) extend at least partially into the forming groove (19) and the outer end faces of the plurality of inserts (20) extending into the forming groove (19) are flush.

6. The injection mold for the rearview mirror button assembly according to claim 4, characterized in that: The second upper mold assembly (2) has a forming groove (19) in the cavity (18), and a plurality of inserts (20) adapted to the shape of the transparent button are provided in the cavity (18), with the ends of the inserts (20) flush with the bottom wall of the forming groove (19).

7. The injection mold for the rearview mirror button assembly according to claim 5 or 6, characterized in that: The die (18) is provided with a plurality of assembly holes (21) corresponding to the insert (20) on the side away from the forming groove (19), and the assembly holes (21) are interference fit with the insert (20).

8. The injection mold for the rearview mirror button assembly according to claim 6, characterized in that: The second upper mold assembly (2) includes a dispensing frame (22) corresponding to the cavity mold (18). The dispensing frame (22) is provided with a glue injection port (23). The dispensing frame (22) includes a plurality of dispensing tubes (24) corresponding one-to-one with each insert (20). The lower end of the dispensing tube (24) is flush with the lower end face of the insert (20).

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