FPC secondary molding injection mold

Abstract

The utility model discloses an FPC (flexible printed circuit) secondary molding injection mold which comprises a lower mold base, a first upper mold base and a second upper mold base, the lower mold base is provided with a first molding area and a second molding area, the first molding area is provided with a first cavity, and the second molding area is provided with a second cavity; the first upper mold base is detachably arranged on the first forming area, a first mold core is arranged on the first upper mold base, and a first injection mold cavity is defined by the first mold cavity and the first mold core; the second upper mold base is detachably arranged on the second forming area, a second mold core is arranged on the second upper mold base, and a second injection mold cavity is defined by the second mold cavity and the second mold core; thus, LSR forming is sequentially conducted on the first injection mold cavity and the second injection mold cavity through the FPC to achieve secondary injection forming of the FPC, it is guaranteed that the outer portion of the FPC is evenly coated with rubber, then the forming quality of a product is improved, particularly, due to the integrated arrangement of the first injection mold cavity and the second injection mold cavity, the secondary forming efficiency of the FPC is improved, the production efficiency of the product is improved, and the product quality is improved. The application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an FPC secondary molding injection mold. Background Technology

[0002] In recent years, electronic devices have become increasingly indispensable tools in people's lives. The integration of functions in electronic devices is getting higher and higher, resulting in smaller overall sizes. As the carrier for electrical connections of electronic components in electronic devices, FPC circuit boards can simplify the manufacturing of electronic devices, reduce wiring between electronic parts, and lower costs. In large-scale electronic industrial production, some electronic components on FPC circuit boards usually need to be coated with silicone. Silicone has good electrical insulation and thermal conductivity, serving as a heat transfer medium and providing functions such as moisture protection, dust protection, corrosion protection, and shock protection.

[0003] Meanwhile, injection molding is a process in which molten raw materials are pressed, injected, cooled, and released to form a product of a certain shape. Injection-molded products are diverse and used in various industries, such as electronics and toys. In some electronic injection-molded products, a large proportion of products are FPC (Flexible Printed Circuit). The existing FPC molding process mainly completes the silicone coating of the FPC by injecting silicone into the mold. However, the existing FPC molding process is poorly designed, and uneven silicone coating is prone to occur in the injection mold cavity, resulting in poor product molding, which is not conducive to the subsequent use of the product, has poor usability, and a limited range of applications.

[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a secondary injection mold for FPC. This mold utilizes the FPC to undergo LSR molding sequentially in the first and second injection mold cavities to achieve secondary injection molding of the FPC, thereby ensuring that the FPC is uniformly coated with plastic material and improving the molding quality of the product. In particular, the integrated design of the first and second injection mold cavities is beneficial to the efficiency of secondary molding of FPC, improves the production efficiency of the product, and has a wide range of applications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A secondary molding injection mold for FPC includes a lower mold base, a first upper mold base, and a second upper mold base. The lower mold base has a first molding area and a second molding area arranged sequentially at its upper end. The first molding area has a first cavity, and the second molding area has a second cavity. The first upper mold base is detachably mounted on the first molding area of ​​the lower mold base. The lower end of the first upper mold base has a first core. The first cavity and the first core together form a first injection mold cavity for the first injection molding of a workpiece. The second upper mold base is detachably mounted on the second molding area of ​​the lower mold base. The lower end of the second upper mold base has a second core. The second cavity and the second core together form a second injection mold cavity for the second injection molding of a workpiece.

[0008] As a preferred embodiment, both the first upper mold base and the second upper mold base are provided with positioning elements for positioning the workpiece on the corresponding injection mold cavity.

[0009] As a preferred embodiment, the positioning element is movably disposed on the first upper mold base and the second upper mold base facing the workpiece. The lower mold base is provided with a positioning part for contacting and stopping the positioning element. When the first upper mold base, the second upper mold base and the lower mold base are closed, and the inner end of the positioning element contacts and positions the workpiece, the positioning part stops and contacts the outer end of the positioning element.

[0010] As a preferred embodiment, the outer end of the positioning member is provided with a first contact slope for contacting the stop of the positioning part, and the first contact slope extends obliquely downward from the outside to the inside.

[0011] As a preferred embodiment, the inner end of the positioning part is provided with a second contact slope for contacting and connecting with the first contact slope, the second contact slope extending obliquely upward from the inside out.

[0012] As a preferred embodiment, both the first upper mold base and the second upper mold base are provided with handles for the user to pick up the upper mold base.

[0013] As a preferred embodiment, the lower mold base is provided with positioning posts, and a plurality of positioning posts are provided and arranged at intervals around the upper edge of the lower mold base. The first upper mold base and the second upper mold base are both provided with positioning holes that match the positioning posts. When the first upper mold base and the second upper mold base are closed on the lower mold base, the positioning holes are matched and connected with the positioning posts.

[0014] As a preferred embodiment, the lower ends of the first upper mold base and the lower ends of the second upper mold base are each provided with movable grooves corresponding to the positioning components, and the positioning components are disposed on the movable grooves.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves secondary injection molding of FPC by designing each component and using FPC to perform LSR molding on the first injection mold cavity and the second injection mold cavity in sequence. This ensures that the FPC is uniformly covered with rubber material, thereby improving the molding quality of the product and facilitating its subsequent use. In particular, the integrated setting of the first injection mold cavity and the second injection mold cavity is beneficial to the secondary molding efficiency of FPC, thereby improving the production efficiency of the product, with good usability and wide applicability.

[0016] Furthermore, the positioning element is designed to support and position the FPC within the corresponding mold cavity, preventing the FPC from shifting and further improving the molding quality of the product. At the same time, the first and second contact slopes facilitate the stop contact between the positioning part and the positioning element, ensuring the stability of use between the positioning element and the positioning part, making it highly practical. In addition, the movable groove facilitates the movable connection of the positioning element to the corresponding upper mold base.

[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0019] Figure 2 This is a first sectional view of an embodiment of the present utility model;

[0020] Figure 3 This is a partially enlarged schematic diagram of the positioning element and positioning part according to an embodiment of the present utility model;

[0021] Figure 4 This is a second sectional view of an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 101. First molding zone; 102. Second molding zone

[0024] 103. First injection mold cavity; 104. Second injection mold cavity

[0025] 10. Lower mold base; 11. First upper mold base

[0026] 12. Second upper mold base 13. Positioning component

[0027] 131. First contact inclined surface; 132. Positioning surface

[0028] 14. Positioning part 141. Second contact slope

[0029] 15. Positioning pin; 16. Positioning hole

[0030] 17. Handle 18. Movable groove. Detailed Implementation

[0031] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0032] An FPC secondary molding injection mold includes a lower mold base 10, a first upper mold base 11, and a second upper mold base 12, wherein: the upper end of the lower mold base 10 is provided with a first molding area 101 and a second molding area 102 arranged sequentially, the first molding area 101 is provided with a first cavity, and the second molding area 102 is provided with a second cavity.

[0033] The first upper mold base 11 is detachably mounted on the first molding area 101 of the lower mold base 10. A first core is provided at the lower end of the first upper mold base 11. The first cavity and the first core together form a first injection mold cavity 103 for the first injection molding of the workpiece. The second upper mold base 12 is detachably mounted on the second molding area 102 of the lower mold base 10. A second core is provided at the lower end of the second upper mold base 12. The second cavity and the second core together form a second injection mold cavity 104 for the second injection molding of the workpiece. Thus, through the design of each component, LSR molding is performed on the first injection mold cavity and the second injection mold cavity of the FPC in sequence to realize the secondary injection molding of the FPC. This ensures that the FPC is uniformly coated with plastic material, thereby improving the molding quality of the product and facilitating its subsequent use. In particular, the integrated arrangement of the first injection mold cavity and the second injection mold cavity is beneficial to the secondary molding efficiency of the FPC, thereby improving the production efficiency of the product, its usability, and its wide applicability.

[0034] Furthermore, both the first upper mold base 11 and the second upper mold base 12 are provided with positioning elements 13 for positioning the workpiece on the corresponding injection mold cavity. Specifically, the positioning elements 13 are movably disposed on the first upper mold base 11 and the second upper mold base 12 facing the workpiece. The lower mold base 10 is provided with a positioning part 14 for contacting and stopping the positioning elements. When the first upper mold base 11, the second upper mold base 12 and the lower mold base 10 are closed, and the inner end of the positioning element 13 contacts and positions the workpiece, the positioning part 14 stops and contacts the outer end of the positioning element 13 to ensure that the positioning element contacts and positions the workpiece. In this way, the positioning elements are provided to support and position the FPC in the corresponding mold cavity, avoiding the movement of the FPC and further improving the molding quality of the product.

[0035] Preferably, the outer end of the positioning member 13 is provided with a first contact slope 131 for contacting the stop of the positioning part. The first contact slope 131 extends obliquely downward from the outside to the inside. The inner end of the positioning part 14 is provided with a second contact slope 141 for contacting and connecting with the first contact slope. The second contact slope 141 extends obliquely upward from the inside to the outside. Thus, the provision of the first contact slope and the second contact slope facilitates the stop contact between the positioning part and the positioning member, ensuring the stability of use between the positioning member and the positioning part, and making it highly practical.

[0036] Furthermore, the lower mold base 10 is provided with positioning posts 15, and the positioning posts 15 are arranged in a spaced manner around the upper edge of the lower mold base 10. The first upper mold base 11 and the second upper mold base 12 are both provided with positioning holes 16 that match the positioning posts. When the first upper mold base 11 and the second upper mold base 12 are closed on the lower mold base 10, the positioning holes 16 are matched and connected with the positioning posts 15. Preferably, the first upper mold base 11 and the second upper mold base 12 are both provided with handles 17 for users to pick up the upper mold base, which is beneficial for users to pick up and put down the FPC in the corresponding injection molding cavity.

[0037] Furthermore, the lower ends of the first upper mold base 11 and the second upper mold base 12 are each provided with movable grooves 18 corresponding to the positioning components. The upper end of the positioning component 13 is disposed on the movable groove 18, and the lower end of the positioning component 13 protrudes outside the movable groove. The lower side of the inner end of the positioning component 13 is provided with a positioning surface 132 for contacting and positioning with the workpiece. Thus, the provision of movable grooves facilitates the movable connection of the positioning components on the corresponding upper mold bases, ensuring the stability of the mold in use.

[0038] The key design feature of this invention lies in its use of FPC to sequentially perform LSR molding on the first and second injection mold cavities through the design of its components. This achieves secondary injection molding of the FPC, ensuring that the FPC is uniformly coated with plastic material, thereby improving the molding quality of the product and facilitating its subsequent use. In particular, the integrated design of the first and second injection mold cavities improves the efficiency of secondary molding of the FPC, thus increasing the production efficiency of the product. It also offers excellent usability and a wide range of applications.

[0039] Furthermore, the positioning element is designed to support and position the FPC within the corresponding mold cavity, preventing the FPC from shifting and further improving the molding quality of the product. At the same time, the first and second contact slopes facilitate the stop contact between the positioning part and the positioning element, ensuring the stability of use between the positioning element and the positioning part, making it highly practical. In addition, the movable groove facilitates the movable connection of the positioning element to the corresponding upper mold base.

[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A secondary molding injection mold for FPC, characterized in that: The device includes a lower mold base, a first upper mold base, and a second upper mold base. The lower mold base has a first molding area and a second molding area arranged sequentially at its upper end. The first molding area has a first cavity, and the second molding area has a second cavity. The first upper mold base is detachably mounted on the first molding area of ​​the lower mold base. The lower end of the first upper mold base has a first core. The first cavity and the first core together form a first injection mold cavity for the first injection molding of the workpiece. The second upper mold base is detachably mounted on the second molding area of ​​the lower mold base. The lower end of the second upper mold base has a second core. The second cavity and the second core together form a second injection mold cavity for the second injection molding of the workpiece.

2. The FPC secondary molding injection mold according to claim 1, characterized in that: Both the first upper mold base and the second upper mold base are provided with positioning elements for positioning the workpiece on the corresponding injection mold cavity.

3. The FPC secondary molding injection mold according to claim 2, characterized in that: The positioning element is movably disposed on the first upper mold base and the second upper mold base facing the workpiece. The lower mold base is provided with a positioning part for contacting the positioning element and stopping. When the first upper mold base, the second upper mold base and the lower mold base are closed, and the inner end of the positioning element contacts and positions the workpiece, the stopping part of the positioning part contacts the outer end of the positioning element.

4. The FPC secondary molding injection mold according to claim 3, characterized in that: The outer end of the positioning member is provided with a first contact slope for contacting the stop of the positioning part, and the first contact slope extends obliquely downward from the outside to the inside.

5. The FPC secondary molding injection mold according to claim 4, characterized in that: The inner end of the positioning part is provided with a second contact slope for contacting and connecting with the first contact slope, and the second contact slope extends obliquely upward from the inside to the outside.

6. The FPC secondary molding injection mold according to claim 1, characterized in that: Both the first upper mold base and the second upper mold base are provided with handles for users to pick up the upper mold base.

7. The FPC secondary molding injection mold according to claim 1, characterized in that: The lower mold base is provided with positioning posts. Several positioning posts are provided and arranged at intervals around the upper edge of the lower mold base. The first upper mold base and the second upper mold base are both provided with positioning holes that match the positioning posts. When the first upper mold base and the second upper mold base are closed on the lower mold base, the positioning holes are matched and connected with the positioning posts.

8. The FPC secondary molding injection mold according to claim 3, characterized in that: The lower ends of the first upper mold base and the lower ends of the second upper mold base are each provided with movable grooves corresponding to the positioning components, and the positioning components are disposed on the movable grooves.

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