Ear clip injection molding mold for preventing FPC (Flexible Printed Circuit) deformation damage
By using an ear clip injection mold designed to prevent FPC deformation and damage, the problems of FPC deformation and damage and unstable plastic part structure during ear clip injection molding are solved, achieving product stability and efficient production.
Patent Information
- Application Number
- CN202520586605.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-31
AI Technical Summary
In the existing technology, FPC is prone to deformation and damage during the injection molding process of ear clips, and the structure of the plastic parts is unstable, which affects the reliability and appearance of the product.
An ear clip injection molding mold designed to prevent FPC deformation and damage is used. The FPC body is fixed inside the plastic battery compartment, and a treatment agent is applied to the outer surface. Through multiple injection molding processes, the FPC is fixed and the plastic parts are supported, avoiding glue overflow and cross-contamination.
It effectively prevents FPC deformation and damage, improves product structural stability and reliability, enhances the production capacity and product quality of liquid molding machines, and meets the requirements for wearable comfort.
Smart Images
Figure CN223904402U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ear clip injection moulding technical field, concretely is ear clip injection moulding forming mould of preventing FPC deformation damage. BACKGROUND
[0002] In the manufacturing field of electronic products, especially for the production of fine parts such as ear clips, using plastic assembly combined with flexible printed circuit board (FPC) liquid silicone encapsulation molding technology has become a common and efficient manufacturing method. However, this technology faces a series of technical problems in the implementation process, especially in preventing FPC deformation damage and ensuring the structural integrity of plastic parts;
[0003] Firstly, the cavity pressure in the injection molding process is a core element, which directly affects the combination quality of plastic assembly and FPC. In the liquid silicone encapsulation molding process, due to the effect of cavity pressure, plastic assembly is prone to overflow phenomenon. This not only destroys the appearance of the product, but also may cause FPC deformation damage due to overflow penetration into the area that should not be penetrated, thereby affecting the function of the circuit. This damage not only reduces the reliability of the product, but also may cause a series of subsequent quality problems. Secondly, in the case of multiple plastic parts assembly and liquid encapsulation of thin plastic parts (especially 0.5mm thickness), the support force problem of plastic parts becomes particularly prominent. Because the glue position is thin, the plastic parts often have difficulty in obtaining sufficient support during molding, resulting in deformation or concave phenomenon. This not only affects the structural stability of the product, but also may cause inconvenience to subsequent assembly and use. In addition, the weak thickness of silicone (also 0.5mm) also brings additional challenges to the liquid encapsulation process. Due to the limited flowability of silicone, it is not easy to distribute uniformly in the mold, especially when performing secondary encapsulation molding (i.e. two-shot molding), silicone is prone to glue leakage to the one-shot molding area, which not only destroys the structural integrity of the product, but also may cause further damage to FPC. Therefore, we propose an ear clip injection molding mold to prevent FPC deformation damage to solve the above problems. SUMMARY
[0004] (I) Technical problems solved
[0005] In view of the shortcomings of the prior art, the utility model provides an ear clip injection molding mold to prevent FPC deformation damage, which solves the problems raised in the above background technology.
[0006] (II) Technical scheme
[0007] The utility model discloses a technical scheme to solve the above problems, which specifically adopts the following technical scheme:
[0008] The utility model provides an ear clip injection molding mold of preventing FPC deformation damage, including lower mould plate, the top of lower mould plate is equipped with four first clamping grooves of one side is open, the top of lower mould plate is welded with four guide rods, the top of lower mould plate is in contact with first middle plate, the bottom of first middle plate is fixedly connected with four first clamping blocks, first clamping block and corresponding first clamping groove are clamped, be equipped with injection molding groove on first middle plate, both sides of first middle plate are all communicated and are fixed with connecting pipe, the bottom inner wall of injection molding groove is equipped with injection runner, the bottom inner wall of injection molding groove is equipped with a plurality of through -hole, be equipped with plastic battery compartment in the through -hole, the inner wall of one side of plastic battery compartment is equipped with FPC body, the plastic battery compartment is equipped with shell, be equipped with protruding portion on the shell, the bottom of protruding portion and the bottom inner wall of injection molding groove are in contact with injection molding groove, the top of first middle plate is in contact with second middle plate, the top of second middle plate is in contact with upper mould plate, the guide rod and first middle plate are in contact.
[0009] Further, the top of the first middle plate is provided with a plurality of second clamping grooves with one side being open, and the second clamping grooves are clamped with second clamping blocks.
[0010] Further, the top of the second clamping block is fixedly connected with the bottom of the second middle plate.
[0011] Further, the lower mold plate is provided with an ejection mechanism.
[0012] Further, the first middle plate is provided with four guide holes, and the first middle plate is in contact with the corresponding guide rod through the guide hole.
[0013] Further, one side of the FPC body extends to the outside of the corresponding shell.
[0014] (Three) beneficial effects
[0015] Compared with the prior art, the utility model provides an ear clip injection molding mold of preventing FPC deformation damage, which has the following beneficial effects:
[0016] The utility model discloses, through the FPC body is fixed in the plastic battery compartment, the plastic battery compartment outer surface is brushed treating agent, and then the shell is fixed on the plastic battery compartment, and after assembling, it is placed into the injection moulding groove on the first middle plate, and then the second middle plate and the upper template are combined with the first middle plate and the lower template and are injected by the connecting pipe, after the first time forming, the second middle plate and the upper template are taken down, and then another middle plate is used to replace the first middle plate, after replacement, the second middle plate and the upper template are combined with the lower template and are secondly injection moulding, after forming, the upper template and the second middle plate are taken down, and the forming product is ejected through the ejection mechanism, thereby solve the liquid encapsulation integrated moulding after the assembly of multiple material pieces, can reach product function demand and wear comfort requirement, liquid forming machine platform productivity efficiency improves and quality requirement, will not cause the damage of FPC body. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;
[0018] Figure 2 It is the three-dimensional structure schematic diagram of the utility model lower template and first middle plate connection;
[0019] Figure 3 It is the three-dimensional structure schematic diagram of the utility model Figure 2 It is the three-dimensional structure schematic diagram of the utility model first middle plate taking down;
[0020] Figure 4 It is the three-dimensional structure schematic diagram of the utility model local part.
[0021] In the drawing: 1, lower template, 2, first clamping groove, 3, guide rod, 4, first middle plate, 5, first clamping block, 6, injection moulding groove, 7, connecting pipe, 8, injection moulding runner, 9, plastic battery compartment, 10, FPC body, 11, shell, 12, protruding part, 13, second middle plate, 14, upper template, 15, second clamping groove, 16, second clamping block, 17, ejection mechanism, 18, guide hole. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model protection.
[0023] EMBODIMENT
[0024] As Figures 1-4As shown, an embodiment of this utility model proposes an ear clip injection molding mold to prevent FPC deformation and damage, including a lower template 1. The top of the lower template 1 has four first slots 2 with openings on one side. Four guide rods 3 are welded to the top of the lower template 1. A first middle plate 4 is movably contacted at the top of the lower template 1. Four first locking blocks 5 are fixedly connected to the bottom of the first middle plate 4. The first locking blocks 5 engage with the corresponding first slots 2. An injection groove 6 is formed on the first middle plate 4. Both sides are connected and fixed with connecting pipes 7. An injection flow channel 8 is provided on the bottom inner wall of the injection molding tank 6. Multiple through holes are provided on the bottom inner wall of the injection molding tank 6, and plastic battery compartments 9 are located within these through holes. An FPC body 10 is provided on one inner wall of the plastic battery compartment 9. A shell 11 is fitted onto the plastic battery compartment 9, and a protrusion 12 is provided on the shell 11. The bottom of the protrusion 12 is in movable contact with the bottom inner wall of the injection molding tank 6. A second middle plate 13 is in movable contact with the top of the first middle plate 4. The second middle plate 13... The top movable contact is with the upper template 14, and the guide rod 3 is in movable contact with the first middle plate 4, fixing the FPC body 10 inside the plastic battery compartment 9. A treatment agent is applied to the outer surface of the plastic battery compartment 9, and then the outer shell 11 is fixed onto the plastic battery compartment 9. After assembly, it is placed into the injection groove 6 on the first middle plate 4. Then, the second middle plate 13 and the upper template 14 are molded together with the first middle plate 4 and the lower template 1, and glue is injected through the connecting pipe 7. After the first molding, the second middle plate 13 and the upper template 14 are removed. Next, replace the first middle plate 4 with another middle plate. After replacement, the second middle plate 13 and the upper template 14 are joined with the lower template 1 for secondary injection molding. After molding, the upper template 14 and the second middle plate 13 are removed, and the molded product is ejected by the ejection mechanism 17. This solves the problem of liquid coating integral molding after assembling multiple parts, which can meet the product's functional requirements and wearing comfort requirements, improve the production capacity efficiency and quality requirements of the liquid molding machine, and will not damage the FPC body 10.
[0025] In some embodiments, the top of the first middle plate 4 is provided with a plurality of second slots 15 with one side open, and a second block 16 is fitted on the second slot 15. The second block 16 serves to hold the plate in place.
[0026] In some embodiments, the top of the second card block 16 is fixedly connected to the bottom of the second middle plate 13.
[0027] In some embodiments, the lower template 1 is provided with an ejection mechanism 17.
[0028] In some embodiments, the first middle plate 4 is provided with four guide holes 18, and the first middle plate 4 is in contact with the corresponding guide rod 3 through the guide holes 18. The guide rod 3 is provided to play a positioning role.
[0029] In some embodiments, one side of the FPC body 10 extends out of the corresponding shell 11.
[0030] The working principle or structural principle is that, in use, the FPC body 10 is fixed in the plastic battery compartment 9, a treatment agent is brushed on the outer surface of the plastic battery compartment 9, the shell 11 is fixed on the plastic battery compartment 9, after assembly, the assembly is placed in the injection molding groove 6 on the first middle plate 4, the second middle plate 13 and the upper mold plate 14 are combined with the first middle plate 4 and the lower mold plate 1 to perform injection molding through the connecting pipe 7, after the first molding, the second middle plate 13 and the upper mold plate 14 are removed, another middle plate is used to replace the first middle plate 4, after replacement, the second middle plate 13 and the upper mold plate 14 are combined with the lower mold plate 1 to perform secondary injection molding, after molding, the upper mold plate 14 and the second middle plate 13 are removed, and the molded product is ejected through the ejection mechanism 17, thereby solving the problem that multiple material pieces are assembled and then integrally molded by liquid encapsulation, achieving the functional requirements and wearing comfort requirements of the product, improving the production efficiency of the liquid molding machine and the quality requirements, and not damaging the FPC body 10.
[0031] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An ear clip injection molding mold for preventing deformation damage of an FPC, comprising a lower mold plate (1), characterized in that: The top of the lower mold plate (1) is provided with four first clamping grooves (2) with one side being open, four guide rods (3) are welded on the top of the lower mold plate (1), the first middle plate (4) is movably contacted on the top of the lower mold plate (1), four first clamping blocks (5) are fixedly connected to the bottom of the first middle plate (4), the first clamping blocks (5) are clamped with the corresponding first clamping grooves (2), the injection molding groove (6) is arranged on the first middle plate (4), the connecting pipes (7) are communicated and fixed on the both sides of the first middle plate (4), the injection molding runner (8) is arranged on the bottom inner wall of the injection molding groove (6), a plurality of through holes are arranged on the bottom inner wall of the injection molding groove (6), the plastic battery compartment (9) is arranged in the through hole, the FPC body (10) is arranged on one side of the inner wall of the plastic battery compartment (9), the shell (11) is sleeved on the plastic battery compartment (9), the protruding part (12) is arranged on the shell (11), the bottom of the protruding part (12) is movably contacted with the bottom inner wall of the injection molding groove (6), the second middle plate (13) is movably contacted on the top of the first middle plate (4), the upper mold plate (14) is movably contacted on the top of the second middle plate (13), the guide rod (3) is movably contacted with the first middle plate (4).
2. The ear clip injection molding mold of claim 1, wherein: The top of the first middle plate (4) is provided with a plurality of second clamping grooves (15) with one side being open, and the second clamping blocks (16) are clamped on the second clamping grooves (15).
3. The ear clip injection molding mold of claim 2, wherein: The top of the second clamping block (16) is fixedly connected with the bottom of the second middle plate (13).
4. The ear clip injection molding mold of claim 3, wherein: The ejecting mechanism (17) is arranged on the lower mold plate (1).
5. The ear clip injection molding mold of claim 4, wherein: Four guide holes (18) are arranged on the first middle plate (4), and the first middle plate (4) is movably contacted with the corresponding guide rod (3) through the guide hole (18).
6. The ear clip injection molding mold of claim 5, wherein: One side of the FPC body (10) extends to the outside of the corresponding shell (11).