Forming die of coated waterproof vibrating needle structure

Abstract

The invention relates to the technical field of waterproof vibrating needle processing, in particular to a forming die of a coated waterproof vibrating needle structure, which comprises a first die and a second die, the first die is provided with a first forming cavity for forming a first forming part; the second mold is provided with a second forming cavity for forming a second forming part; a first forming part is formed through a first mold, and after the formed first forming part wraps a part of the elastic needle, a first forming piece is obtained; forming by adopting a second mold to obtain a second forming part; the second forming part wraps the first forming part to obtain a waterproof vibrating needle product; according to the forming mold of the coated waterproof vibrating needle structure, the injection molding machining procedure is optimized, step-by-step forming of key parts of a product is achieved, the integrally-formed coated waterproof vibrating needle structure is obtained, the production cost is reduced, the production efficiency and the sealing reliability of the waterproof vibrating needle product are improved, and batch production is facilitated.

Description

Technical Field

[0001] This invention relates to the field of waterproof spring needle processing technology, specifically a molding die for an encapsulated waterproof spring needle structure. Background Technology

[0002] In the production of spring-loaded products, existing methods generally involve first molding a plastic body, and then using a hot-melt method to assemble the waterproof spring-loaded needle to the plastic body, that is, pressing a heated metal needle (such as a copper needle) into the plastic body. The spring-loaded needle structure assembled using this method has poor reliability, with risks of not being waterproof or even detaching. Furthermore, when there are many spring-loaded needles to be assembled, or when the assembly angles are complex, such as side assembly, specialized equipment and tooling are required for complex and irregular spring-loaded needle structures, resulting in high production costs, low efficiency, and poor reliability. Therefore, there is an urgent need to provide a solution to overcome these technical problems. Summary of the Invention

[0003] The purpose of this invention is to provide a molding die for a waterproof spring needle structure, which is made by multiple injection molding using a split mold. This not only reduces production costs but also improves production efficiency and the reliability of the waterproof spring needle product, resulting in good consistency in the quality of the spring needle product and facilitating mass production.

[0004] To achieve the above objectives, the present invention provides the following technical solution;

[0005] A molding die for a waterproof spring needle structure includes a first die and a second die. The first die is provided with a first molding cavity for molding a first molding part, and the second die is provided with a second molding cavity for molding a second molding part.

[0006] When forming the waterproof spring needle structure, the spring needle is placed in the first forming cavity of the first mold, and the first forming part is formed using the first mold. After forming, the first forming part covers a portion of the spring needle to obtain the first molded part. The first molded part is placed in the second forming cavity of the second mold, and the second mold is used to form the second forming part. The second forming part covers the first molded part to obtain the waterproof spring needle product.

[0007] Furthermore, the spring needle and the first molding part, the first molding part and the second molding part, and the spring needle and the second molding part are all connected by injection molding. The first molding part and the second molding part respectively cover a part of the spring needle, and the first molding part and the second molding part are integrally molded structures.

[0008] Furthermore, the first mold includes a first lower mold and a first upper mold. The first lower mold has a first lower mold cavity for forming the lower part of the first forming part, and the spring pin is placed in the first lower mold cavity. The first upper mold has a first upper mold cavity for forming the upper part of the first forming part. During forming, the first upper mold and the first lower mold in which the spring pin is placed are closed, and the first lower mold cavity and the first upper mold cavity form a first forming cavity to form a complete first forming part. The first forming part covers a part of the spring pin to form a first forming part.

[0009] Furthermore, the first lower mold cavity is provided with a spring pin covering groove, and the spring pin covering groove is also provided with a spring pin positioning groove; when the mold is closed, the spring pin is placed in the spring pin positioning groove, and the spring pin covering groove is connected to the first molding cavity; after molding, the part of the spring pin located in the covering groove is covered by the first molding part.

[0010] Furthermore, the first upper mold cavity is also provided with a first needle tip positioning groove; when the mold is closed, one end of the spring needle extends into the first needle tip positioning groove, and the rest of the spring needle is located in the first upper mold cavity; after molding, the part of the spring needle located in the first upper mold cavity is covered by the first molding part.

[0011] Furthermore, the first upper mold cavity is also provided with a first needle tip positioning groove. When the mold is closed, one end of the spring needle extends into the first needle tip positioning groove; after molding, the part of the spring needle that extends into the first needle tip positioning groove is not covered by the first molding part.

[0012] Furthermore, the second mold includes a second upper mold, a second lower mold, and a second side mold; the second lower mold is provided with a second lower mold cavity, the second upper mold is provided with a second upper mold cavity, and the second side mold is provided with a second side mold cavity; during molding, the first molding part is placed in the second lower mold cavity, the second upper mold, the second lower mold, and the second side mold are closed, and the second lower mold cavity, the second upper mold cavity, and the second side mold cavity together form a second molding cavity to form a second molding part; the second molding part is integrally formed with the first molding part, and the second molding part covers a portion of the spring needle to form a waterproof spring needle product.

[0013] Furthermore, the second lower mold cavity is provided with a component positioning platform and a second needle tip positioning groove; during molding, the first molded part is placed in the second lower mold cavity, the component positioning platform extends into the first molding part, one end of the spring needle extends into the second needle tip positioning groove, and the remaining part of the spring needle and the first molding part are located in the second lower mold cavity; after molding, the spring needle part and the first molding part in the second lower mold cavity are covered by the second molding part.

[0014] Furthermore, after the mold is closed, the second upper mold cavity abuts against the end face of one end of the spring pin in the second molding cavity. After molding, the end face of one end of the spring pin is not covered by the second molding part.

[0015] The present invention also provides a covered waterproof spring needle structure, which is formed by molding with a molding die for a covered waterproof spring needle structure as described in any one of the claims. The waterproof spring needle structure includes a spring needle, a first molding part and a second molding part; the first molding part and the second molding part respectively cover a part of the spring needle, and the first molding part and the second molding part are integrally formed.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] This encapsulated waterproof spring pin structure molding die uses a first mold and a second mold to form an integrated molding structure. The first and second molding parts can be arbitrarily matched in color, achieving diverse color options. The first mold directly injection molds the first molding part to the spring pin, partially encapsulating it to form the first molded part. This separates the processing of key product components from the overall product, preventing defects in some parts from affecting the final overall product quality and improving the consistency of key product components. Direct injection molding between the first molding part and the spring pin ensures a tighter contact. Compared to the traditional hot-pressing method that presses the spring pin into the molded product, this reduces the development costs of related equipment and tooling fixtures, avoids bending the spring pin and damaging the injection-molded product during pressing, lowers overall production costs, and is beneficial for mass production injection molding. The second mold performs a second molding of the first molding part with the spring pin, and can be used to mold second molding parts with different properties, allowing the spring pin to be applied to products with different structures, characteristics, and scenarios, improving overall product performance and overall production efficiency.

[0018] The molding die for this encapsulated waterproof spring needle structure eliminates the need for additional equipment for pressing and assembling the spring needles, optimizes the injection molding process, and enables step-by-step molding of key product components. Compared to existing melting and assembly methods that require equipment and tooling, this method achieves an integrated encapsulated waterproof spring needle structure, which not only reduces production costs but also improves production efficiency and the sealing reliability of the waterproof spring needle products, and is also conducive to mass production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the molding process of the present invention;

[0020] Figure 2 This is an exploded view of the structure of the first mold in the invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the first lower mold and the first forming part of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the first upper mold and the first forming part of the present invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the second lower mold and the second forming part of the present invention;

[0024] Figure 6 This is a three-dimensional structural diagram of the second upper mold and the second forming part of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of the second mold after it is closed and the first molding part is placed. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] refer to Figure 1-7 As shown, the present invention provides a molding die for a waterproof spring needle structure, including a first mold 30 and a second mold 20. The first mold 30 is provided with a first molding cavity for molding a first molding part 40; the second mold 20 is provided with a second molding cavity for molding a second molding part 50.

[0028] When the waterproof spring needle structure is formed, the spring needle 30 is placed in the first molding cavity of the first mold 10, and the first molding part 40 is formed by the first mold 10. After the first molding part 40 is formed, it covers part of the spring needle 30 to obtain the first molded part. The first molded part is placed in the second molding cavity of the second mold 20, and the second molding part 50 is formed by the second mold. The second molding part 50 covers the first molded part to obtain the waterproof spring needle product.

[0029] Specifically, the material of the spring needle 30 can be selected according to functional requirements, ensuring a certain degree of heat resistance, so as to avoid the first molding part 40 and the second molding part 50 affecting the spring needle 30 during the injection molding process.

[0030] This encapsulated waterproof spring pin structure molding die uses a first mold 10 and a second mold 20 to form an integrated molding structure, allowing for arbitrary color matching of the first molding part 40 and the second molding part 50 to achieve color diversity. The first mold 10 directly injection molds the first molding part 40 and the spring pin 30 to form a first molded part, separating the key parts of the product from the overall product, avoiding the impact of defects in some parts on the final overall product quality, and improving the consistency of key parts of the product. The direct injection molding of the first molding part 40 and the spring pin 30 results in a tighter contact. Compared with the traditional hot-pressing method that presses the spring pin into the molded product, it can reduce the development costs of related equipment and tooling fixtures, avoid bending the spring pin and damaging the injection molded product during pressing, reduce the overall production and processing costs, and is beneficial for mass production injection molding. The second mold 20 performs a second molding of the first molding part 40 with the spring pin 30, and can be used to mold a second molding part 50 with different properties, so that the spring pin 30 can be applied to products with different structures, characteristics and scenarios, improving the overall product performance and improving the overall production efficiency.

[0031] The molding die for this encapsulated waterproof spring needle structure eliminates the need for additional equipment for pressing and assembling the spring needles, optimizes the injection molding process, and enables step-by-step molding of key product components. Compared to existing melting and assembly methods that require equipment and tooling, this method achieves an integrated encapsulated waterproof spring needle structure, which not only reduces production costs but also improves production efficiency and the sealing reliability of the waterproof spring needle products, and is also conducive to mass production.

[0032] After the first molded part is processed, the molding die of this encapsulated waterproof spring needle structure can conduct relevant tests and data collection on the first molded part 40 with spring needle 30, including waterproof performance, structural strength, dimensional data, and corrosion resistance. This ensures the quality of key components of the product before subsequent encapsulation injection molding. During the R&D and trial production stage, it can further reduce the economic and R&D costs of directly molding complete products. During the production and capacity ramp-up stage, it can improve product consistency and increase product yield.

[0033] In this embodiment, the spring pin 30 is connected to the first molding part 40, the first molding part 40 is connected to the second molding part 50, and the spring pin 30 is connected to the second molding part 50 by injection molding. The first molding part 40 and the second molding part 50 respectively cover a portion of the spring pin 30, and the first molding part 40 and the second molding part 50 are integrally molded structures.

[0034] In this embodiment, the first mold 10 includes a first lower mold 11 and a first upper mold 12. The first lower mold 11 is provided with a first lower mold cavity 111 for forming the lower end portion of the first forming part 40, and the spring pin 30 is placed in the first lower mold cavity 111. The first upper mold 12 is provided with a first upper mold cavity 121 for forming the upper end portion of the first forming part 40. During forming, the first upper mold 12 and the first lower mold 11 in which the spring pin 30 is placed are closed. The first lower mold cavity 111 and the first upper mold cavity 121 are closed to form a first forming cavity to form a complete first forming part 40. The first forming part 40 covers a part of the spring pin 30 to form a first molded part.

[0035] Specifically, the spring pin 30 is first placed in the first molding cavity so that the first molding part 40 can cover the spring pin 30 and injection mold it to form the first molded part. This enables the separation of key product components and direct injection molding connection, thereby improving the connection strength between the spring pin 30 and the first molding part 40, reducing the risk of spring pin loosening, and improving the overall product quality and performance.

[0036] In this embodiment, the first lower mold cavity 111 is provided with a spring pin covering groove 1111, and the spring pin covering groove 1111 is also provided with a spring pin positioning groove 1112; when the mold is closed, the spring pin 30 is placed in the spring pin positioning groove 1112, and the spring pin covering groove 1111 is connected to the first molding cavity; after molding, the part of the spring pin 30 located in the covering groove 1111 is covered by the first molding part 40.

[0037] Specifically, when the gap between the spring pins 30 is small, the spring pin covering groove 1111 can be connected to form a long strip groove. When the gap between the spring pins 30 is large, the spring pin covering groove 1111 can be set as an independent groove. The spring pin 30 extends into the spring pin positioning groove 1112 and is in close contact with the spring pin positioning groove 1112. This part is not covered by the first forming part 40. By setting and adjusting the position and size of the spring pin covering groove 1111, the part that does not need to be covered can be formed as needed, thus broadening the installation scenarios and application fields of the spring pin structure.

[0038] In this embodiment, the first upper mold cavity 121 is further provided with a first needle tip positioning groove 1211. When the mold is closed, one end of the spring needle 30 extends into the first needle tip positioning groove 1211; the remaining part of the spring needle 30 is located inside the first upper mold cavity 121. After molding, the part of the spring needle 30 located inside the first upper mold cavity 121 is covered by the first molding part 40. Specifically, the spring needle 30 extends into the first needle tip positioning groove 1211 and is in close contact with the first needle tip positioning groove 1211, and this part is not covered by the first molding part 40.

[0039] In this embodiment, the second mold 20 includes a second upper mold 22, a second lower mold 21, and a second side mold 23; the second lower mold 21 is provided with a second lower mold cavity 211, the second upper mold 22 is provided with a second upper mold cavity 221, and the second side mold 23 is provided with a second side mold cavity 231;

[0040] During molding, the first molded part is placed in the second lower mold cavity 211, and the second upper mold 22, the second lower mold 21, and the second side mold 23 are closed. The second lower mold cavity 211, the second upper mold cavity 221, and the second side mold cavity 231 surround the second molding cavity to form the second molding part 50. The second molding part 50 is integrally molded with the first molded part, and the second molding part 50 covers a part of the spring needle 30 to form a waterproof spring needle product.

[0041] Specifically, the shape of the second molding part 50 formed by the second mold 20 is not fixed and can be adjusted according to the specific product. The structure shown in this plan and drawings is only a partial structure. The second molding cavity of the second mold 20 will carry the first molding part for a second integral molding. The second molding part 50 and the first molding part 40 are injection molded together to form an integral molding structure, which improves the overall structural strength of the product. The multi-stage molding also provides more choices in materials and colors. The second molding part 50 covers a part of the spring needle 30, further stabilizing the connection between the spring needle 30 and the product, improving waterproof performance and structural strength, and improving the overall product quality.

[0042] In this embodiment, the second lower mold cavity 211 is provided with a component positioning platform 2112 and a second needle tip positioning groove 2111. During molding, the first molded part is placed in the second lower mold cavity 211, the component positioning platform 2112 extends into the first molding part 40, one end of the spring needle 30 extends into the second needle tip positioning groove 2111, and the remaining part of the spring needle 30 and the first molding part 40 are located in the second lower mold cavity 211. After molding, a portion of the spring needle 30 and the first molding part 40 in the second lower mold cavity 211 are covered by the second molding part 50.

[0043] Specifically, the component positioning table 2112 can position the first molded part placed in the second lower mold cavity 211 to ensure the quality of the second molding. In addition, the second needle tip positioning groove 2111 can not only play a positioning role, but also reserve the working part of the spring needle 30 again, thereby improving the overall injection molding quality and efficiency.

[0044] In this embodiment, after the mold is closed, the second upper mold cavity 221 abuts against the end face of one end of the spring pin 30 within the second molding cavity. After molding, the end face of one end of the spring pin 30 is not covered by the second molding part 50. Specifically, the abutment between the second upper mold cavity 221 and the spring pin 30 ensures that the abutment surface is not covered by the second molding part 50, thus reserving another working area for the spring pin 30.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined by the spirit of the invention.

Claims

1. A molding die for a waterproof, encapsulated spring needle structure, characterized in that, It includes a first mold (30) and a second mold (20), wherein the first mold (30) is provided with a first molding cavity for molding a first molding part (40); and the second mold (20) is provided with a second molding cavity for molding a second molding part (50). When the waterproof spring needle structure is formed, the spring needle (30) is placed in the first molding cavity of the first mold (10), and the first molding part (40) is formed by the first mold (10). After the first molding part (40) is formed, it covers a part of the spring needle (30) to obtain the first molded part. The first molded part is placed in the second molding cavity of the second mold (20), and the second molding part (50) is formed by the second mold. The second molding part (50) covers the first molded part to obtain the waterproof spring needle product.

2. The molding die for a waterproof spring needle structure according to claim 1, characterized in that, The spring needle (30) is connected to the first molding part (40), the first molding part (40) is connected to the second molding part (50), and the spring needle (30) is connected to the second molding part (50) by injection molding. The first molding part (40) and the second molding part (50) respectively cover a part of the spring needle (30). The first molding part (40) and the second molding part (50) are integrally molded structures.

3. The molding die for a covered waterproof spring needle structure according to claim 1, characterized in that, The first mold (10) includes a first lower mold (11) and a first upper mold (12). The first lower mold (11) is provided with a first lower mold cavity (111) for forming the lower part of the first forming part (40), and the spring pin (30) is placed in the first lower mold cavity (111). The first upper mold (12) is provided with a first upper mold cavity (121) for forming the upper part of the first forming part (40). During molding, the first upper mold (12) and the first lower mold (11) on which the spring needle (30) is placed are closed, and the first lower mold cavity (111) and the first upper mold cavity (121) are enclosed to form a first molding cavity to form a complete first molding part (40). The first molding part (40) covers a part of the spring needle (30) to form a first molded part.

4. The molding die for a covered waterproof spring needle structure according to claim 3, characterized in that, The first lower mold cavity (111) is provided with a spring needle covering groove (1111), and the spring needle covering groove (1111) is also provided with a spring needle positioning groove (1112). When the mold is closed, the spring pin (30) is placed in the spring pin positioning groove (1112), and the spring pin covering groove (1111) is connected to the first molding cavity; after molding, the part of the spring pin (30) located in the covering groove (1111) is covered by the first molding part (40).

5. The molding die for a waterproof spring needle structure according to claim 3, characterized in that, The first upper mold cavity (121) is also provided with a first needle tip positioning groove (1211); When the mold is closed, one end of the spring needle (30) extends into the first needle tip positioning groove (1211), and the rest of the spring needle (30) is located in the first upper mold cavity (121); after molding, the part of the spring needle (30) located in the first upper mold cavity (121) is covered by the first molding part (40).

6. The molding die for a waterproof spring needle structure according to claim 1, characterized in that, The second mold (20) includes a second upper mold (22), a second lower mold (21), and a second side mold (23); the second lower mold (21) is provided with a second lower mold cavity (211), the second upper mold (22) is provided with a second upper mold cavity (221), and the second side mold (23) is provided with a second side mold cavity (231). During molding, the first molded part is placed in the second lower mold cavity (211), and the second upper mold (22), the second lower mold (21), and the second side mold (23) are closed. The second lower mold cavity (211), the second upper mold cavity (221), and the second side mold cavity (231) surround the second molding cavity to form the second molding part (50). The second molding part (50) is integrally formed with the first molded part, and the second molding part (50) covers a part of the spring needle (30) to form a waterproof spring needle product.

7. The molding die for a waterproof spring needle structure according to claim 6, characterized in that, The second lower mold cavity (211) is provided with a component positioning platform (2112) and a second needle tip positioning groove (2111). During molding, the first molded part is placed in the second lower mold cavity (211), the component positioning platform (2112) extends into the first molding part (40), one end of the spring needle (30) extends into the second needle tip positioning groove (2111), and the rest of the spring needle (30) and the first molding part (40) are located in the second lower mold cavity (211); after molding, the spring needle (30) in the second lower mold cavity (211) and the first molding part (40) are partially covered by the second molding part (50).

8. The molding die for a waterproof spring needle structure according to claim 6, characterized in that, After the mold is closed, the second upper mold cavity (221) abuts against the end face of one end of the spring pin (30) in the second molding cavity. After molding, the end face of one end of the spring pin (30) is not covered by the second molding part (50).

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