Die structure for correcting hardware terminal in die

Abstract

The utility model discloses a mold structure for correcting a hardware terminal in a mold, relates to the technical field of electronic component injection molding product production, and solves the problem that a U-shaped groove part on the hardware terminal is easy to deform due to high temperature in the injection molding production of a product, so that the size of a U-shaped opening is small. The bottom face of the upper mold core and the upper surface of the lower mold core are each provided with a profiled groove, the bottom face of the upper mold core protrudes downwards to form at least one positioning part, and the positioning parts are located outside the profiled grooves and can be inserted into U-shaped grooves of the hardware terminals. The upper surface of the lower die core is provided with at least one positioning groove corresponding to the positioning part, the positioning groove is located on the outer side of the profiled groove, and the part, provided with the U-shaped groove, of the hardware terminal can be embedded into the positioning groove. The positioning part and the positioning groove on the die are matched to position the inner side and the outer side of the U-shaped groove on the terminal, the size of the U-shaped opening of the U-shaped groove does not change, and the position degree does not shift.

Description

Technical Field

[0001] This utility model relates to the field of electronic component injection molding production technology, and in particular to a mold structure for in-mold straightening of metal terminals.

[0002] Background Technology

[0003] Terminal products consist of injection-molded parts and metal terminals, with the main body of the metal terminals embedded within the injection-molded part. This product is injection-molded. Specifically, the main body of the metal terminal is placed into the cavity of the mold, with the electrical contact portion of the terminal extending to the outside of the cavity. Then, the metal is injected into the cavity through the mold, ultimately forming the final product. Figure 9 As shown, a portion of the metal terminal that connects to the power supply is bent to form a U-shaped groove. In general, the dimensions of the U-shaped groove from the opening to the bottom of a standard product are consistent. However, since the metal terminal is made of relatively soft copper, which is a good conductor of heat, the U-shaped groove on the metal terminal is prone to deformation due to high temperatures during injection molding. This results in inconsistent widths of the U-shaped groove, a smaller U-shaped opening, and a positional deviation, affecting the quality of the product. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a mold structure for in-mold straightening of metal terminals, which solves the problem that the U-shaped groove part on the metal terminals is prone to deformation due to high temperature during injection molding, resulting in the U-shaped opening being too small.

[0005] To achieve the above objectives, the technical solution of this utility model is a mold structure for in-mold straightening of metal terminals, including an upper mold core and a lower mold core. The bottom surface of the upper mold core and the upper surface of the lower mold core both have grooves. The shape of the grooves is adapted to the shape of the product to be formed. The embedded portion of the metal terminal can extend into the groove, and the portion of the metal terminal with a U-shaped groove can extend out of the groove. The bottom surface of the upper mold core protrudes downward to form at least one positioning portion. The positioning portion is located outside the groove and can be inserted into the U-shaped groove of the metal terminal. The upper surface of the lower mold core has at least one positioning groove corresponding to the positioning portion. The positioning groove is located outside the groove, and the portion of the metal terminal with a U-shaped groove can be embedded into the positioning groove.

[0006] Preferably, the positioning part is integrally formed with the upper mold core.

[0007] Preferably, the upper mold core is provided with an insert piece, the insert piece is inserted and connected to the upper mold core, and the lower end of the insert piece protrudes from the lower surface of the upper mold core to form the positioning part.

[0008] Preferably, the rounded corners on both sides of the lower end of the positioning part form a first guide arc surface, and the curvature of the first guide arc surface matches the U-shaped groove of the hardware terminal.

[0009] Preferably, a pressure block is provided on the upper mold core, the pressure block is inserted and connected to the upper mold core, the bottom surface of the pressure block has a stepped surface, the lower end of the pressure block protrudes from the lower surface of the upper mold core and cooperates with the stepped surface to press the bent part of the hardware terminal.

[0010] Preferably, the upper surface of the lower mold core has an upwardly protruding positioning protrusion for positioning the portion of the hardware terminal extending outside the groove.

[0011] Preferably, the positioning protrusion is integrally formed with the lower mold core.

[0012] Preferably, the lower mold core is provided with a plurality of first positioning blocks, the first positioning blocks being interlocked with the lower mold core, and the upper end of the first positioning block protruding from the upper surface of the lower mold core to form the positioning protrusion.

[0013] Preferably, the lower mold core is provided with at least two second positioning blocks, the upper surface of the lower mold core has a groove, the two second positioning blocks are interlocked with the lower mold core, and the upper ends of the two second positioning blocks extend into the groove, forming the positioning groove between the two second positioning blocks.

[0014] Preferably, the upper rounded corners on opposite sides of the two second positioning blocks form a second guide arc surface, and the curvature of the second guide arc surface matches the bent portion of the hardware terminal.

[0015] Its advantages over existing technologies are:

[0016] This invention improves the structure of the injection mold by inserting a positioning part formed at the bottom of the upper mold core into the U-shaped groove on the metal terminal, filling the inner side of the U-shaped groove. Simultaneously, the portion of the U-shaped groove on the metal terminal is embedded into a positioning groove formed on the lower mold core. The positioning groove cooperates with the positioning part to position the inner and outer sides of the U-shaped groove, correcting the position of the U-shaped groove on the metal terminal. This ensures that the U-shaped opening size of the U-shaped groove on the metal terminal does not change during injection molding, and the position does not shift. This method can reduce the defect rate and improve product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the upper mold core and the lower mold core when they are attached together in this utility model;

[0018] Figure 2 This is a schematic diagram of the mold structure of this utility model when the upper mold core is removed;

[0019] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the mold structure of this utility model from another perspective when the upper mold core is removed;

[0021] Figure 5 yes Figure 4 Enlarged view of the structure at point B;

[0022] Figure 6 This is a schematic diagram of the structure of the insert, the second positioning block, and the pressure block in this utility model when they are combined with the hardware terminal;

[0023] Figure 7 This is a schematic diagram of the insert structure in this utility model;

[0024] Figure 8 This is a schematic diagram of the structure when the two second positioning blocks cooperate in this utility model;

[0025] Figure 9 This is a structural diagram of a hardware terminal.

[0026] In the figure, 1 is the upper mold core; 2 is the lower mold core; 3 is the insert piece; 31 is the positioning part; 311 is the first guide arc surface; 4 is the pressure block; 5 is the first positioning block; 51 is the positioning protrusion; 6 is the second positioning block; 61 is the second guide arc surface; 7 is the hardware terminal; 701 is the U-shaped groove; and 101 is the positioning groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] like Figures 1-4 As shown, a preferred embodiment of the present invention provides a mold structure for an in-mold straightening hardware terminal 7. The mold structure mainly includes two parts: an upper mold core 1 and a lower mold core 2. The upper mold core 1 is generally installed on an upper template, and the lower mold core 2 is generally installed on a lower template.

[0029] Grooves are formed on both the lower and upper surfaces of the upper mold core 1, and the shape of the grooves matches the shape of the injection molded part of the terminal product. When the upper and lower mold plates are attached together, the grooves on the upper mold core 1 and lower mold core 2 mate to form a cavity between them. By injecting molding into the cavity, an injection molded part is finally formed. During injection molding, the main body of the hardware terminal 7 extends into the cavity, and the main body of the hardware terminal 7 is ultimately embedded in the injection molded part. The portion of the hardware terminal 7 with the U-shaped groove 701 extends to the outside of the cavity and is positioned and fixed, and this portion is not affected during injection molding. The mold structure in this embodiment can simultaneously injection mold multiple products.

[0030] refer to Figure 1 , Figure 2 The upper mold core 1 has multiple through-holes, each containing a insert 3 and a pressure block 4. Each hardware terminal 7 corresponds to one insert 3 and one pressure block 4. The insert 3 and pressure block 4 are inserted and connected vertically to the mounting holes, which are located outside the mold groove. Therefore, the insert 3 and pressure block 4 do not affect the injection molding of the product. The upper ends of the insert 3 and pressure block 4 are relatively large, allowing them to be positioned in conjunction with the countersunk edge above the mounting hole. The lower end of the insert 3 protrudes from the mounting hole and extends downwards by a certain length.

[0031] like Figure 5 , Figure 7 As shown, the portion of the insert 3 that protrudes from the mounting hole forms a positioning part 31. The shape of this positioning part 31 is adapted to the shape of the U-shaped groove 701 on the hardware terminal 7. The positioning part 31 is inserted into the U-shaped groove 701 and closely adheres to the inner wall of the U-shaped groove 701, ensuring that the portion of the hardware terminal 7 with the U-shaped groove 701 will not bend or deform inward due to high temperature, thereby ensuring that the size of the U-shaped groove 701 remains unchanged from top to bottom, and preventing the U-shaped opening from being too small.

[0032] At the two edges of the positioning portion 31 at the lower end of the insert 3, two guide arc surfaces are formed by rounded corners, namely the first guide arc surface 311. The curvature of the first guide arc surface 311 matches the R-angle curvature of the bottom surface of the U-shaped groove 701. The first guide arc surface 311 can guide the U-shaped groove 701 on the hardware terminal 7, correct and adjust the position of the U-shaped groove 701 on the hardware terminal 7, and ensure that the position of the U-shaped groove 701 on the hardware terminal 7 does not shift.

[0033] like Figure 5 As shown, the lower end face of the pressure block 4 is a stepped surface. This stepped surface will cooperate with the stepped structure formed by bending on the metal terminal 7. The pressure block 4 presses this part tightly so that the metal terminal 7 will not warp during injection molding.

[0034] In this embodiment, both the insert 3 and the pressure block 4 are detachable. Depending on the product, the insert 3 and the pressure block 4 can be disassembled. The positioning part 31 is also provided on the insert 3. In other technical solutions, the positioning part 31 can also be directly provided on the bottom surface of the upper mold core 1 and integrally formed with the upper mold core 1.

[0035] like Figure 2 , Figure 3 As shown, multiple through mounting holes are also provided on the upper surface of the lower mold core 2, all located on the outer side of the groove. A first positioning block 5 and a second positioning block 6 are respectively provided in each mounting hole. The first positioning block 5 and the second positioning block 6 pass upward through the mounting hole and protrude upward by a portion, which are used to position the side edge of the hardware terminal.

[0036] Each hardware terminal 7 corresponds to two first positioning blocks 5 and two second positioning blocks 6. The first positioning blocks 5 are used to position the edge of the part of the hardware terminal 7 that protrudes from the groove, and the second positioning blocks 6 are used to position the U-shaped groove 701 on the hardware terminal 7.

[0037] like Figure 3 As shown, the upper end of the first positioning block 5 protrudes from the upper surface of the lower mold core 2 to form a positioning protrusion 51. The positioning protrusions 51 on the two first positioning blocks 5 respectively position the left and right sides of the hardware terminal 7.

[0038] The upper surface of the lower mold core 2 also has a groove. The upper ends of the two second positioning blocks 6 pass through the mounting holes and are inserted into the groove. There is a certain gap between the two second positioning blocks 6, forming a positioning groove 101 between the two second positioning blocks 6 (see...). Figure 6 The dimensions of the positioning groove 101 are consistent with the maximum width of the U-shaped groove 701 on the hardware terminal 7. The U-shaped groove 701 on the hardware terminal 7 will be embedded in the positioning groove 101. The two second positioning blocks 6 are in close contact with the outer wall of the U-shaped groove 701 for positioning. The opposite sides of the two second positioning blocks 6 are in close contact with the inner wall of the groove.

[0039] The two second positioning blocks 6 cooperate with the insert 3 to position the inner and outer sides of the U-shaped groove 701 of the hardware terminal 7, ensuring that the size of the U-shaped groove 701 does not change.

[0040] like Figure 8 As shown, at the position of the upper edge of the two second positioning blocks 6 on opposite sides, a guide arc surface is formed by rounding the corners, namely the second guide arc surface 61. The curvature of the second guide arc surface 61 is adapted to the curvature of the bending part of the U-shaped groove 701 on the hardware terminal 7. The second guide arc surface 61 can guide the movement of the hardware terminal 7, ensuring that the hardware terminal 7 is correctly placed in the accurate position on the lower mold core 2.

[0041] In this embodiment, the positioning protrusion 51 is located on the top of the first positioning block 5. In other technical solutions, the positioning protrusion 51 can also be located on the lower mold core 2 and integrally formed with the lower mold core 2. In this embodiment, the positioning groove 101 is formed by the gap between the two second positioning blocks 6. In other technical solutions, the positioning groove 101 can also be designed directly on the lower mold core 2.

[0042] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A mold structure for an in-mold straightening hardware terminal (7), comprising an upper mold core (1) and a lower mold core (2), wherein the bottom surface of the upper mold core (1) and the upper surface of the lower mold core (2) both have grooves, the shape of the grooves being adapted to the shape of the product to be formed, the embedded portion of the hardware terminal (7) being able to extend into the grooves, and the portion of the hardware terminal (7) having a U-shaped groove being able to extend outside the grooves, characterized in that, The bottom surface of the upper mold core (1) protrudes downward to form at least one positioning part (31). The positioning part (31) is located outside the groove and can be inserted into the U-shaped groove of the hardware terminal (7). The upper surface of the lower mold core (2) has at least one positioning groove (101) corresponding to the positioning part (31). The positioning groove (101) is located outside the groove. The part of the hardware terminal (7) with the U-shaped groove can be embedded into the positioning groove (101).

2. The mold structure for an in-mold straightening hardware terminal (7) according to claim 1, characterized in that, The positioning part (31) is integrally formed with the upper mold core (1).

3. The mold structure for an in-mold straightening hardware terminal (7) according to claim 1, characterized in that, An insert (3) is provided on the upper mold core (1). The insert (3) is inserted and connected to the upper mold core (1). The lower end of the insert (3) protrudes from the lower surface of the upper mold core (1) to form the positioning part (31).

4. The mold structure for an in-mold straightening hardware terminal (7) according to claim 2 or 3, characterized in that, The lower end of the positioning part (31) has rounded corners on both sides forming a first guide arc surface (311), and the curvature of the first guide arc surface (311) matches the U-shaped groove of the hardware terminal (7).

5. The mold structure for an in-mold straightening hardware terminal (7) according to claim 1, characterized in that, A pressure block (4) is provided on the upper mold core (1). The pressure block (4) is inserted and connected to the upper mold core (1). The bottom surface of the pressure block (4) has a stepped surface. The lower end of the pressure block (4) protrudes from the lower surface of the upper mold core (1) and, in conjunction with the stepped surface, can press the bent part of the hardware terminal (7).

6. The mold structure for an in-mold straightening hardware terminal (7) according to claim 1, characterized in that, The upper surface of the lower mold core (2) is raised upward to form a positioning protrusion (51) for positioning the portion of the hardware terminal (7) extending outside the groove.

7. The mold structure for an in-mold straightening hardware terminal (7) according to claim 6, characterized in that, The positioning protrusion (51) is integrally formed with the lower mold core (2).

8. The mold structure for an in-mold straightening hardware terminal (7) according to claim 6, characterized in that, The lower mold core (2) is provided with a plurality of first positioning blocks (5), the first positioning blocks (5) are inserted and connected to the lower mold core (2), and the upper end of the first positioning block (5) protrudes from the upper surface of the lower mold core (2) to form the positioning protrusion (51).

9. The mold structure for an in-mold straightening hardware terminal (7) according to claim 1, characterized in that, At least two second positioning blocks (6) are provided on the lower mold core (2). The upper surface of the lower mold core (2) has a groove. The two second positioning blocks (6) are inserted and connected to the lower mold core (2), and the upper ends of the two second positioning blocks (6) extend into the groove, forming the positioning groove (101) between the two second positioning blocks (6).

10. The mold structure for an in-mold straightening hardware terminal (7) according to claim 9, characterized in that, The upper rounded corners on opposite sides of the two second positioning blocks (6) form a second guide arc surface (61), and the curvature of the second guide arc surface (61) matches the bent part of the hardware terminal (7).

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