Injection mold for metal terminal insert encapsulation product
By setting a sandwich-type through-hole structure with positioning grooves and positioning pins in the mold, the problems of deformation and glue overflow at the L-shaped structure end are solved, and the manufacturing of high-quality metal terminal insert glue-coated products is realized.
Patent Information
- Application Number
- CN202423267028.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-30
AI Technical Summary
When using existing molds to manufacture L-shaped structure end metal terminal inserts with plastic coating, the impact force of the plastic causes the L-shaped structure end to deform, resulting in excess plastic, which affects product performance, and the metal terminals are easily damaged when the mold is closed.
The injection mold consists of a lower mold core, an upper mold core, a first slider, and a second slider. By setting positioning grooves and positioning pins in the cavity, a sandwich-like contact structure is formed to limit the L-shaped structure end. An guide C-corner is set at the edge of the slider to ensure accurate mold closing without damage.
This effectively avoids deformation and excess adhesive at the L-shaped structure end, improves product quality, and ensures accurate insertion of metal terminals during mold closing, further enhancing product performance.
Smart Images
Figure CN223657479U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mould technical field, especially relate to a kind of injection mould for metal terminal embedded part encapsulation product. BACKGROUND
[0002] Metal terminal embedded part encapsulation (IM) product is a kind of manufacturing technology that metal terminal is placed in mould in advance, then plastic is injected into mould by injection molding process, so that plastic and metal terminal are tightly combined, and metal terminal embedded part encapsulation (IM) process is widely applied in connector, sensor component.
[0003] As shown in Figure 1 When manufacturing the metal terminal embedded part encapsulation product with L-shaped structure end (L-shaped structure end is gold-plated conductive sheet, surface cannot have any glue) of the terminal by using existing mould, since plastic flows in mould cavity with certain impact force, L-shaped structure end is prone to deformation, so that glue overflow to L-shaped structure end surface, so that metal terminal embedded part encapsulation product produced will interfere with counterpart when assembling, and affect performance, thus existing mould needs to be optimized and improved. UTILITY MODEL CONTENT
[0004] The utility model discloses a kind of injection mould for metal terminal embedded part encapsulation product, can effectively solve the problem in background art.
[0005] To achieve the above object, the utility model is realized by the following technical scheme:
[0006] A kind of injection mould for metal terminal embedded part encapsulation product, including lower mould kernel, upper mould kernel, first slider and second slider, the middle part of lower mould kernel and upper mould kernel is all set with cavity groove, and the one side of cavity groove is communicated with first sliding groove, for accommodating first slider, the other side of cavity groove is communicated with second sliding groove, for accommodating second slider, the inside of first slider is set with six first positioning slot, the inside of second slider is set with six second positioning slot, the cavity groove of lower mould kernel and upper mould kernel is set with three positioning columns close to the side of first slider.
[0007] Preferably, the width of the positioning column is less than the width of the L-shaped structure end.
[0008] Preferably, the edge of the first positioning slot is provided with lead-in C angle.
[0009] Preferably, the four corners of the lower mould kernel have protrusions, and the four corners of the upper mould kernel have grooves corresponding to the protrusions.
[0010] This utility model provides an injection mold for overmolding products of metal terminal inserts, which has the following beneficial effects:
[0011] 1. After the mold is closed, the lower mold core, upper mold core, first slider and second slider form a product cavity. The outer side of the L-shaped structure end abuts against the first slider, and the inner side of the L-shaped structure end abuts against the positioning post. The first slider, L-shaped structure end and positioning post form a sandwich contact pattern, which limits the two sides of the L-shaped structure end. During injection molding, the L-shaped structure end will not deform due to the impact of plastic, avoiding the overflow of plastic on the surface of the L-shaped structure end and improving product quality.
[0012] 2. The edge of the first positioning groove is provided with an guide C-angle. When the first slider is moved to close the mold, the L-shaped structure end of the metal terminal can be quickly and accurately inserted into the first positioning groove under the guidance of the guide C-angle, avoiding the L-shaped structure end from colliding with the first slider and causing damage, thereby further improving product quality. Attached Figure Description
[0013] Figure 1 A schematic diagram of a metal terminal insert with encapsulation and the terminal itself.
[0014] Figure 2 This is a schematic diagram of the existing mold closing structure;
[0015] Figure 3 This is a partial structural diagram of the lower mold core of an existing mold;
[0016] Figure 4 This is a partial structural diagram of the upper mold core of an existing mold;
[0017] Figure 5 This is a schematic diagram of the structure of the first slider of an existing mold;
[0018] Figure 6 This is a schematic diagram of the product structure manufactured using existing molds;
[0019] Figure 7 This is a schematic diagram of the mold closing structure of this utility model;
[0020] Figure 8 for Figure 7 Enlarged view of point A in the middle;
[0021] Figure 9 This is a partial structural diagram of the lower mold core of the mold of this utility model;
[0022] Figure 10 This is a schematic diagram of the upper mold core of the mold of this utility model;
[0023] Figure 11 This is a schematic diagram of the structure of the first slider of the mold of this utility model;
[0024] Figure 12 This is a schematic diagram of the product structure manufactured using the mold of this utility model.
[0025] In the diagram: 10, plastic body; 20, metal terminal; 21, L-shaped structure end; 22, fisheye structure end; 1, lower mold core; 2, upper mold core; 3, first slider; 4, second slider; 5, cavity groove; 6, first slide groove; 7, second slide groove; 8, first positioning groove; 9, positioning post; 11, guide C corner. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element 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.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of 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.
[0030] Figure 1 The product is a metal terminal insert with a plastic coating. It includes a plastic body 10 and six metal terminals 20 embedded in the plastic body 10. The six metal terminals 20 are arranged in two layers and back to back. One end of the metal terminal 20 is an L-shaped structure end 21 (the L-shaped structure end 21 is a gold-plated conductive sheet and there must be no adhesive on the surface) and the other end is a fisheye structure end 22.
[0031] Figures 2-5 The mold currently used to manufacture this product includes a lower mold core 1, an upper mold core 2, a first slider 3, and a second slider 4. Both the lower mold core 1 and the upper mold core 2 have a cavity groove 5 in the middle. One side of the cavity groove 5 is connected to a first slide groove 6 to accommodate the first slider 3, and the other side of the cavity groove 5 is connected to a second slide groove 7 to accommodate the second slider 4. The inner side of the first slider 3 has six first positioning grooves 8 to accommodate the L-shaped structure end 21 of six metal terminals. The inner side of the second slider 4 has six second positioning grooves (not shown) to accommodate the fisheye structure end 22 of six metal terminals.
[0032] Figure 2 This is a schematic diagram of the existing mold closing structure. For ease of understanding, the upper mold core 2 is hidden in this diagram.
[0033] When manufacturing the product, the metal terminal 20 is first placed in the cavity groove 5 of the lower mold core 1, and then the mold is closed. After the mold is closed, a product cavity is formed between the lower mold core 1, the upper mold core 2, the first slider 3 and the second slider 4. The L-shaped end 21 of the metal terminal 20 is inserted into the first positioning groove 8 of the first slider 3 and abuts against the inner wall of the first positioning groove 8. The fisheye end 22 of the metal terminal 20 is inserted into the second positioning groove of the second slider 4 and abuts against the inner wall of the second positioning groove. After the existing mold is closed, the outer side of the L-shaped end 21 abuts against the first slider 3, and the inner side is in a suspended state, lacking a limit. During injection molding, the plastic flows in the mold and generates a certain impact force, which can easily cause the L-shaped end 21 to deform (deform towards the suspended side), resulting in overflow of plastic onto the surface of the L-shaped end 21. The metal terminal insert with plastic coating produced in this way will interfere with the assembly of the component and affect the performance. Therefore, the existing mold needs to be optimized and improved.
[0034] Products manufactured using existing molds, such as Figure 6 As shown.
[0035] Meanwhile, the existing mold has another problem: when the first slider 3 is moved to close the mold, the L-shaped end 21 of the metal terminal 20 collides with the first slider 3 and cannot be quickly and accurately inserted into the first positioning groove 8, resulting in damage to the L-shaped end 21.
[0036] ReferenceFigures 7-10 This utility model optimizes and improves the structure of existing molds, providing an injection mold for metal terminal insert overmolding products, including a lower mold core 1, an upper mold core 2, a first slider 3, and a second slider 4. Both the lower mold core 1 and the upper mold core 2 have a cavity groove 5 in their middle, and one side of the cavity groove 5 is connected to a first sliding groove 6 to accommodate the first slider 3. The other side of the cavity groove 5 is connected to a second sliding groove 7 to accommodate the second slider 4. The inner side of the first slider 3 has six first positioning grooves 8 to accommodate the L-shaped structural ends 21 of six metal terminals 20. The inner side of the second slider 4 has six second positioning grooves (not shown) to accommodate the fisheye structural ends 22 of six metal terminals 20. Three positioning pins 9 are provided in the cavity grooves 5 of the lower mold core 1 and the upper mold core 2 near the first slider 3.
[0037] Figure 7 This is a schematic diagram of the mold closing structure of this utility model. For ease of understanding, the upper mold core 2 is hidden in this diagram.
[0038] During product manufacturing, the metal terminal 20 is first placed in the cavity groove 5 of the lower mold core 1, with the inner side of the L-shaped end 21 abutting against the corresponding positioning post 9. Then, the mold is closed. After the mold is closed, a product cavity is formed between the lower mold core 1, the upper mold core 2, the first slider 3, and the second slider 4. The L-shaped end 21 of the metal terminal 20 is inserted into the first positioning groove 8 of the first slider 3 and abuts against the inner side wall of the first positioning groove 8. The fisheye end 22 of the metal terminal 20 is inserted into the second positioning groove 9 of the second slider 4. In the positioning groove, it abuts against the inner side wall of the second positioning groove. In this way, after the mold is closed, the outer side of the L-shaped structural end 21 abuts against the first slider 3, and the inner side of the L-shaped structural end 21 abuts against the positioning post 9. The first slider 3, the L-shaped structural end 21 and the positioning post 9 form a sandwich-like contact pattern, which limits the two sides of the L-shaped structural end 21. During injection molding, the L-shaped structural end 21 will not deform due to the impact of the plastic, avoiding the overflow of plastic on the surface of the L-shaped structural end 21 and improving product quality.
[0039] Products manufactured using the mold of this utility model, such as Figure 11 As shown.
[0040] In one specific embodiment, the width of the positioning post 9 is smaller than the width of the L-shaped structural end 21, ensuring that the plastic body 10 can support the inner side of the L-shaped structural end 21.
[0041] In one specific embodiment, the edge of the first positioning groove 8 is provided with an inlet C-corner 11 (i.e., a chamfer). When the first slider 3 is moved to close the mold, under the guidance of the inlet C-corner 11, the L-shaped end 21 of the metal terminal 20 can be quickly and accurately inserted into the first positioning groove 8, avoiding the L-shaped end 21 from colliding with the first slider 3 and being damaged, thereby further improving product quality.
[0042] In one specific embodiment, the lower mold core 1 has protrusions at its four corners, and the upper mold core 2 has grooves at its four corners corresponding to the protrusions, which facilitates mold closing and alignment.
[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. An injection mold for overmolding metal terminal inserts, characterized in that: The mold includes a lower mold core, an upper mold core, a first slider, and a second slider. Both the lower mold core and the upper mold core have a cavity groove in their middle. One side of the cavity groove is connected to a first sliding groove to accommodate the first slider, and the other side of the cavity groove is connected to a second sliding groove to accommodate the second slider. The inner side of the first slider has six first positioning grooves, and the inner side of the second slider has six second positioning grooves. Three positioning pins are provided in the cavity grooves of the lower mold core and the upper mold core near the first slider.
2. The injection mold for overmolding metal terminal inserts according to claim 1, characterized in that: The width of the positioning post is smaller than the width of the L-shaped structure end of the metal terminal.
3. The injection mold for overmolding metal terminal inserts according to claim 1, characterized in that: The edge of the first positioning groove is provided with an inlet C-angle.
4. The injection mold for overmolding metal terminal inserts according to claim 1, characterized in that: The lower mold core has protrusions at its four corners, and the upper mold core has grooves at its four corners corresponding to the protrusions.