Injection molding die with punching function

Abstract

The utility model relates to an injection molding die with a punching function, which comprises an upper die and a lower die, an upper die core is arranged in the upper die, a lower die core is arranged in the lower die, an injection molding cavity is arranged between the upper die core and the lower die core, and the lower die core is provided with a copper pin guide block and a copper pin positioning column in the injection molding cavity. The lower mold core is provided with a copper contact pin punching and cutting socket at the bottom of the injection molding cavity, and the upper mold core is provided with a punching pin used for being inserted into the copper contact pin punching and cutting socket. Guiding, positioning and punching and cutting functions of the copper contact pin are integrated into the injection molding mold, so that the production process flow is simplified, the production efficiency is improved, and the production cost is reduced. The position accuracy of the copper contact pin in the mold is ensured, errors are avoided, and the product quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an injection molding mold with a punching function. Background Technology

[0002] As modern electronic products trend towards miniaturization and multifunctionality, the demand for components with complex internal structures and high precision requirements is increasing. For example, toggle switches have many tiny copper pins, each representing a different circuit path. Since these tiny pins need to be injection molded and fixed to a plastic housing, it's inconvenient to handle them manually, let alone quickly and accurately place them into the designated positions. Therefore, it's necessary to simplify the design by integrating these numerous tiny copper pins into a single unit. In traditional manufacturing processes, the entire copper pin assembly is placed in a mold, and a plastic housing is manufactured through injection molding, fixing the pins to the housing. The product is then removed, and a separate stamping machine is used to punch holes and remove excess material connecting the pins to ensure electrical isolation. This separate production method leads to low production efficiency, and because it's a step-by-step operation, positional deviations can occur during each process change, affecting the final product quality. Utility Model Content

[0003] This invention proposes an injection mold with a punching function, which eliminates the need for external punching and removal, greatly reducing the manufacturing cycle and improving production efficiency. It solves the aforementioned problems existing in the prior art.

[0004] The technical solution of this utility model is implemented as follows: an injection molding mold with punching function includes an upper mold and a lower mold. The upper mold is provided with an upper mold core, and the lower mold is provided with a lower mold core. An injection cavity is provided between the upper mold core and the lower mold core. The lower mold core is provided with a copper pin guide block and a copper pin positioning post in the injection cavity. The lower mold core has a copper pin punching and cutting insertion port at the bottom of the injection cavity. The upper mold core is provided with a punch for inserting the copper pin punching and cutting insertion port.

[0005] Preferably, the lower die core has a blanking port on the lower side of the copper pin punching and cutting insertion port, the diameter of the blanking port is larger than the copper pin punching and cutting insertion port, and the lower die has a waste groove on the lower side of the blanking port.

[0006] Preferably, a horizontal box is detachably connected to the lower side of the lower mold core, and the horizontal box has a horizontal slot that communicates with the waste trough.

[0007] Preferably, an air inlet is provided on one side of the lower mold core, and an inclined blowing groove is provided on one end of the air inlet, which is inclined downward and connects to the waste trough. An air nozzle is connected to the air inlet, and the horizontal groove extends through one side of the horizontal box.

[0008] Preferably, a punch holder is fixedly connected between the upper mold core and the upper mold, the upper end of the punch is fixed between the punch holder and the upper mold, the lower end of the punch penetrates downward through the upper mold core, and the upper mold core is provided with a pressure block extending to the injection cavity.

[0009] Preferably, the upper die core has a sliding opening on the lower side of the punch fixing seat, the pressure block is movably fitted in the sliding opening, the pressure block has an integrally formed limit block, the upper die core has a limiting opening for the limit block to be movably set in, the punch fixing seat has a supporting opening facing the pressure block, the supporting opening has a spring block for supporting the pressure block, and the pressure block has a through opening for the punch to pass through.

[0010] Preferably, the injection molding cavity has two cavities.

[0011] In summary, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model places a copper busbar (including multiple connected copper pins) into the injection molding cavity of the lower mold core, and positions it using copper pin guide blocks and copper pin positioning posts. Then, the upper mold and upper mold core are closed with the lower mold and lower mold core. During the mold closing process, punches are inserted between the copper pins to punch and remove excess material. The punches are inserted into the punching and cutting slots of the copper pins, carrying the punched material into the punching and cutting slots. Finally, injection molding is performed. This utility model integrates the guiding, positioning, and punching and cutting functions of the copper pins into the injection molding mold, simplifying the production process, ensuring the accuracy of the copper pins' position in the mold, avoiding errors, and guaranteeing product quality.

[0013] 2. The design of the discharge port allows the punched waste material to fall smoothly into the waste trough, preventing waste residue from affecting subsequent production. The design of the air inlet and inclined air trough utilizes compressed air to automatically blow the waste material out of the horizontal trough, maintaining a clean working environment.

[0014] 3. The setting of the pressure block ensures the stability of the copper pin throughout the entire processing, effectively resisting the tensile force during punching and the pressure of molten plastic during injection molding. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the copper busbar structure;

[0017] Figure 2 This is a schematic diagram of the structure of the copper busbar after it has been injection-molded into a plastic shell according to this utility model.

[0018] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 4 This is a top view of the present invention;

[0020] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure along the BB direction;

[0022] Figure 7 This is a schematic diagram of the lower mold portion of this utility model;

[0023] Figure 8 A schematic diagram showing the structure of copper being inserted into the injection cavity of the lower mold core;

[0024] Figure 9 This is a structural diagram of the present invention after punching and removing excess material from the copper pin and completing injection molding;

[0025] Figure 10 This is a schematic diagram of the structure of this utility model with the upper mold portion removed;

[0026] Figure 11 This is a schematic diagram of the structure of the present invention with the upper mold and upper mold core removed;

[0027] Figure 12 For the present utility model in Figure 11 Based on the above, a structural diagram showing the removal of the punch holder and pressure block is provided.

[0028] Figure 13 for Figure 7 A schematic diagram of the structure when observed from below;

[0029] Figure 14 This is a schematic diagram of the upper mold part in this utility model.

[0030] In the diagram: 1. Upper mold; 11. Upper mold core; 111. Sliding port; 112. Limiting port; 2. Lower mold; 21. Waste slot; 22. Horizontal box; 221. Horizontal slot opening; 3. Lower mold core; 31. Copper pin guide block; 32. Copper pin positioning post; 33. Copper pin punching and cutting insertion port; 34. Blanking port; 35. Air blowing port; 36. Angled blowing groove; 37. Air nozzle; 4. Injection cavity; 5. Punch; 6. Punch fixing seat; 61. Holding port; 62. Elastic block; 7. Pressure block; 71. Limiting block; 72. Through hole; 8. Copper busbar; 81. Excess material segment. Detailed Implementation

[0031] The following will refer to the appendix in the embodiments of this utility model. Figure 1-14 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0032] Example:

[0033] like Figures 3 to 14 As shown, this utility model discloses an injection molding die with a punching function. In this embodiment, this utility model is used to... Figure 1 The copper busbar 8 (containing multiple copper pins connected together) is injection molded onto a plastic housing to form a shape. Figure 2 ,in Figure 1 The excess material segment 81 of the copper busbar 8 (including multiple interconnected copper pins) is the area that needs to be punched and removed before injection molding in this invention. Specifically, this invention includes an upper mold 1 and a lower mold 2. An upper mold core 11 is provided in the upper mold 1, and a lower mold core 3 is provided in the lower mold 2. An injection cavity 4 is provided between the upper mold core 11 and the lower mold core 3. Figure 7 As shown, the lower mold core 3 is provided with a copper pin guide block 31 and a copper pin positioning post 32 in the injection cavity 4, as follows: Figure 8 The diagram shows the copper busbar 8 placed inside the injection molding cavity 4 and positioned by the copper pin guide block 31 and the copper pin positioning post 32. Figure 9 This is a structural diagram of the present invention after the excess material segment 81 on the copper pin has been punched and removed, and injection molding has been completed. The lower mold core 3 has a copper pin punching and cutting insertion port 33 at the bottom of the injection cavity 4. The excess material segment 81 on the copper pin is located directly above the copper pin punching and cutting insertion port 33. Figure 12 and Figure 14 As shown, the upper mold core 11 is provided with a punch 5 for inserting a copper pin punching hole cutting socket 33.

[0034] During production, this invention places the copper busbar 8 into the injection cavity 4 of the lower mold core 3 and positions it using the copper pin guide block 31 and the copper pin positioning post 32. Then, the upper mold 1 and the upper mold core 11 are closed with the lower mold 2 and the lower mold core 3. During the mold closing process, the punch 5 is inserted between each copper pin to punch and remove excess material segments 81. The punch 5 is inserted into the copper pin punching and cutting socket 33 to carry the punched material into the punching and cutting socket. Finally, injection molding is performed. This invention integrates the guiding, positioning, punching and cutting functions of the copper pin into the injection molding mold, realizing the simultaneous punching process in the injection mold, simplifying the production process, ensuring the accuracy of the position of the copper pin in the mold, avoiding errors, and ensuring product quality.

[0035] like Figure 5 As shown, the lower die core 3 has a discharge port 34 below the copper pin punching and cutting insertion port 33. The diameter of the discharge port 34 is larger than that of the copper pin punching and cutting insertion port 33, thus facilitating the passage of the punched material. The lower die 2 has a waste groove 21 below the discharge port 34, which allows the punched material to continue falling downwards. In addition, a horizontal box 22 is detachably connected to the lower die core 3 via a screw. The horizontal box 22 has a horizontal slot 221 that communicates with the waste groove 21. The material falling downwards from the waste groove 21 will enter the horizontal slot 221. Furthermore, an air inlet 35 is provided on one side of the lower mold core 3, and an inclined blowing groove 36 is provided on one end of the air inlet 35, which is inclined downward and connected to the waste tank 21. An air nozzle 37 is connected to the air inlet 35. A horizontal groove 221 extends through one side of the horizontal box 22. The air nozzle 37 is used to connect pressurized air. Under the timing control of the solenoid valve, the pressurized air is released. The gas enters the waste tank 21 from the inclined blowing groove 36 and then leaves from the horizontal groove 221. During this process, the broken material will be blown out of the lower mold 2 from the horizontal groove 221 and fall into the placed waste bin, thereby keeping the working environment clean.

[0036] like Figure 5 , Figure 6 , Figure 10 as well as Figure 11As shown, a punch holder 6 is fixedly connected between the upper mold core 11 and the upper mold 1. The upper end of the punch 5 is fixed between the punch holder 6 and the upper mold 1, while the lower end of the punch 5 penetrates downward through the upper mold core 11. In addition, a pressure block 7 extending to the injection cavity 4 is provided on the upper mold core 11. Furthermore, a sliding opening 111 is opened on the lower side of the punch holder 6 on the upper mold core 11, and the pressure block 7 is movably fitted in the sliding opening 111. A limiting block 71 is integrally formed on the pressure block 7. A limiting opening 112 is provided on the upper mold core 11 for the limiting block 71 to be movably set therein. The limiting block 71 is used to limit the range of motion of the pressure block 7. An opening facing the upper mold core 11 is provided on the punch holder 6. The pressure block 7 has a support opening 61, which is provided with a spring block 62 for supporting the pressure block 7. The pressure block 7 has a through opening 72 for the punch 5 to pass through. The spring block 62 is used to push the pressure block 7 downward, so that the pressure block 7 can protrude downward from the lower mold core 3. When the upper mold 1 and upper mold core 11 are closed with the lower mold 2 and lower mold core 3, the pressure block 7 contacts the copper busbar in advance, pressing the copper pin on the copper busbar. Then the punch 5 contacts the excess material segment 81 between the copper pin and punches off the excess material segment 81. The setting of the pressure block 7 ensures the stability of the copper pin in the whole process and effectively resists the tensile force during punching and the pressure of molten plastic during injection molding.

[0037] It should also be noted that the injection molding cavity 4 of this utility model is provided with two, so two products can be produced at the same time.

[0038] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection molding die with a punching function, comprising an upper die and a lower die, wherein the upper die contains an upper die core, the lower die contains a lower die core, and an injection cavity is provided between the upper die core and the lower die core, characterized in that: The lower mold core is provided with a copper pin guide block and a copper pin positioning post in the injection cavity. The lower mold core has a copper pin punch cut-out socket at the bottom of the injection cavity. The upper mold core is provided with a punch for inserting the copper pin punch cut-out socket.

2. The injection mold with punching function according to claim 1, characterized in that: The lower die core has a blanking port on the lower side of the copper pin punching and cutting insertion port. The diameter of the blanking port is larger than that of the copper pin punching and cutting insertion port. The lower die has a waste groove on the lower side of the blanking port.

3. The injection molding die with punching function according to claim 2, characterized in that: A horizontal box is detachably connected to the lower side of the lower mold core, and the horizontal box has a horizontal slot that communicates with the waste trough.

4. The injection molding die with punching function according to claim 3, characterized in that: An air inlet is provided on one side of the lower mold core. An inclined blowing groove is provided on one end of the air inlet, which is inclined downward and connects to the waste trough. An air nozzle is connected to the air inlet. The horizontal groove extends through one side of the horizontal box.

5. An injection molding die with punching function according to claim 1, characterized in that: A punch holder is fixedly connected between the upper mold core and the upper mold. The upper end of the punch is fixed between the punch holder and the upper mold, and the lower end of the punch penetrates downward through the upper mold core. A pressure block extending to the injection cavity is provided on the upper mold core.

6. The injection molding die with punching function according to claim 5, characterized in that: The upper die core has a sliding opening on the lower side of the punch fixing seat. The pressure block is movably fitted in the sliding opening. A limit block is integrally formed on the pressure block. The upper die core has a limiting opening for the limit block to be movably set inside. The punch fixing seat has a supporting opening facing the pressure block. A spring block for supporting the pressure block is provided in the supporting opening. The pressure block has a through opening for the punch to pass through.

7. The injection mold with punching function according to claim 1, characterized in that: The injection molding cavity has two parts.

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