An injection mold for a battery separator

Abstract

An injection mold for a battery separator includes a fixed mold and a moving mold. The fixed mold includes a fixed template, a fixed mold core, a fixed mold panel, a hot runner template, a manifold, and several hot nozzles. The manifold is installed between the hot runner template and the fixed mold panel. Each hot nozzle has one end connected to the manifold and the other end passing through the hot runner template, the fixed template, and the fixed mold core to connect to the injection cavity. Each hot nozzle is divided into at least four rows, with each row of hot nozzles spaced apart along the width of the injection cavity. Each row of hot nozzles includes multiple hot nozzles spaced apart along the length of the injection cavity. The two outer rows of hot nozzles are open-type hot nozzles, and the two inner rows of hot nozzles are needle valve type hot nozzles. Therefore, the inner hot nozzles are needle valve type, allowing for faster and more accurate injection; while the outer hot nozzles are open-type, ensuring the injection speed meets the needs of both sides of the separator, and reducing cost. By balancing cost and injection speed, burr generation can be reduced, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of molds, and in particular to an injection mold for a battery separator plate. Background Technology

[0002] With the development of the new energy industry, battery modules have found various applications in different fields and environments, such as passenger cars, buses, sanitation vehicles, and energy storage power stations. A battery module consists of multiple battery cells, which are connected in series and / or parallel via wiring harnesses and isolation plate assemblies. Figure 1 The existing partition plate 10 shown is usually rectangular sheet, and its production process usually adopts injection molding. However, after the partition plate 10 is demolded by injection molding, it still needs to undergo a lot of rough edge grinding, which is a complicated process and has low production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide an injection mold for a battery separator, which has the advantage of improving production efficiency.

[0004] To achieve the above objectives, the solution of this utility model is: An injection mold for a battery separator includes a fixed mold and a moving mold; the fixed mold and the moving mold are movably fitted together to form an injection cavity; the fixed mold includes a fixed template, a fixed mold core, a fixed mold panel, a hot runner template, a manifold, and a plurality of hot nozzles; the fixed mold core is disposed between the fixed template and the moving mold; the hot runner template is disposed on the side of the fixed template away from the moving mold; the fixed mold panel is installed on the side of the hot runner template away from the fixed template; the manifold is installed between the hot runner template and the fixed mold panel; one end of each hot nozzle is connected to the manifold, and the other end passes through the hot runner template, the fixed template, and the fixed mold core and then communicates with the injection cavity; each hot nozzle is divided into at least four rows, and each row of hot nozzles is spaced apart along the width direction of the injection cavity, each row of hot nozzles includes a plurality of hot nozzles spaced apart along the length direction of the injection cavity, and the outer two rows of hot nozzles are open hot nozzles, and the inner two rows of hot nozzles are needle valve type hot nozzles.

[0005] Furthermore, the hot nozzles in each row are staggered along the length direction, and adjacent hot nozzles are staggered along the width direction.

[0006] Furthermore, there are 5 hot nozzles in each row.

[0007] Furthermore, the moving mold includes a moving template and a moving mold core; the fixed template and the moving template are movably fitted together, and the fixed mold core and the moving mold core are respectively housed between them, forming the injection molding cavity between the fixed mold core and the moving mold core.

[0008] Furthermore, the fixed mold plate and the moving mold plate have recessed mold cavities on their respective sides that are close to each other. A fixed mold core is installed in the fixed mold cavity, and a moving mold core is installed in the moving mold cavity. The hot runner mold plate has a recessed flow distribution cavity on its side that is close to the fixed mold panel. The flow distribution cavity has several channels that connect to the fixed mold plate and the fixed mold cavity. Each channel has a hot nozzle installed in it.

[0009] Furthermore, the moving mold also includes mold feet, an ejector mechanism, and a moving mold panel; the mold feet and ejector mechanism are provided on the side of the moving mold away from the fixed mold plate, the ejector mechanism is used to eject the product, and the moving mold panel is provided on the other side of the mold feet and ejector mechanism.

[0010] Furthermore, the fixed mold panel has a main channel connected to the flow divider plate in the flow divider cavity at the center of the side away from the hot runner template.

[0011] Furthermore, heat insulation plates are respectively provided on the opposite sides of the moving mold and the fixed mold of the injection mold.

[0012] By adopting the above technical solution, and by setting multiple hot nozzles and controlling the injection through a manifold, the overall injection efficiency of the mold is high. The inner and outer nozzles are needle valve type and open type, respectively. The inner nozzle is a needle valve type, which allows for control of the material flow through the needle valve, resulting in a fast injection speed that meets the needs of the larger material volume in the middle of the partition plate. It also offers more precise control, resulting in no burr residue on the inner side of the product after injection, eliminating the need for secondary grinding. The outer nozzle is an open type, allowing for a faster injection speed to meet the needs of the smaller material volume on both sides of the partition plate, ensuring injection efficiency and lower cost, thus reducing mold costs. Even if burrs are present, they are located at the product edge and are easy to grind. This approach reduces mold development costs while meeting injection speed requirements and minimizes burr generation, thereby improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the isolation panel product; Figure 2 This is a front view of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the product and the hot nozzle according to an embodiment of the present utility model.

[0014] Labeling Explanation: 10. Isolation Plate, 1. Fixed Mold, 11. Fixed Platen, 111. Fixed Mold Cavity, 12. Fixed Mold Core, 13. Fixed Mold Panel, 131. Main Runner, 14. Hot Runner Platen, 141. Channel, 142. Manifold, 15. Hot Nozzle, 16. Open Hot Nozzle, 161. Needle Valve Hot Nozzle, 162. Moving Mold, 2. Moving Platen, 21. Moving Mold Cavity, 211. Moving Mold Core, 22. Mold Foot, 23. Ejector Mechanism, 24. Moving Mold Panel, 25. Injection Cavity, 3. Heat Insulation Plate, 4. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] like Figures 2 to 4 As shown, an injection mold for a battery separator in this embodiment includes a fixed mold 1 and a moving mold 2.

[0017] The fixed mold 1 and the moving mold 2 are movably fitted together. The fixed mold 1 includes a fixed template 11 and a fixed mold core 12, and the moving mold 2 includes a moving template 21 and a moving mold core 22. The fixed template 11 and the moving template 21 are movably fitted together and respectively accommodate the fixed mold core 12 and the moving mold core 22. An injection cavity 3 is formed between the fixed mold core 12 and the moving mold core 22.

[0018] The fixed mold 1 also includes a fixed mold panel 13 and a hot runner system. The hot runner system includes a hot runner template 14, a manifold 15, and a plurality of hot nozzles 16. The hot runner template 14 is disposed on the side of the fixed mold 11 away from the moving mold 21. The fixed mold panel 13 is installed on the side of the hot runner template 14 away from the fixed mold 11. The manifold 15 is installed between the hot runner template 14 and the fixed mold panel 13. One end of each hot nozzle 16 is connected to the manifold 15, and the other end passes through the hot runner template 14, the fixed mold 11, and the fixed mold core 12 and is connected to the injection cavity 3.

[0019] Each hot nozzle 16 can be divided into at least four rows. Each row of hot nozzles 16 can be spaced apart along the width direction of the injection cavity 3. Each row of hot nozzles 16 can include multiple hot nozzles spaced apart along the length direction of the injection cavity 3. The two outer rows of hot nozzles 16 are open hot nozzles 161, and the two inner rows of hot nozzles 16 are needle valve type hot nozzles 162.

[0020] Therefore, in this embodiment, the injection mold, by setting the inner hot nozzle 16 as a needle valve type hot nozzle 162, can control the opening and closing of the material flow through the needle valve, resulting in a fast injection speed that can meet the needs of the large amount of glue in the middle of the partition plate, and the controllability is more accurate. There are no burr residues after the inner side of the product is injected, and there is no need to perform secondary grinding on the inner side. On the other hand, the outer hot nozzle 16 is set as an open hot nozzle 161, which can meet the needs of the small amount of glue on both sides of the partition plate, and the cost is low, which can facilitate the reduction of mold cost. At the same time, after the product is molded and demolded, even if burrs are generated on the outer side of the product due to the stringing of the open hot nozzle 161, the burrs are only distributed on the edge of the product and can be quickly removed by grinding, which is simple and efficient.

[0021] That is, by setting multiple hot nozzles 16 and controlling the injection by the manifold 15, the injection mold of this embodiment has high overall injection efficiency. The inner and outer parts are needle valve type hot nozzles 162 and open hot nozzles 161, which can reduce mold development costs while meeting the injection speed requirements and reduce the generation of burrs, thereby improving production efficiency.

[0022] In this embodiment, the number of hot nozzles 16 in each row can be 5. The specific number can be adapted to the structure and shape of the partition plate and the fluidity of the plastic material. Furthermore, the hot nozzles 16 in each row can be staggered along the length direction and staggered in the width direction. Thus, each hot nozzle 16 can evenly cover the injection cavity 3, which facilitates uniform and rapid pouring into the injection cavity 3 and improves injection efficiency.

[0023] In this embodiment, the fixed mold plate 11 and the moving mold plate 21 are recessed on their respective sides, with the fixed mold cavity 111 and the moving mold cavity 211 recessed. The fixed mold core 12 is installed in the fixed mold cavity 111, and the moving mold core 22 is installed in the moving mold cavity 211. The hot runner mold plate 14 is recessed on the side near the fixed mold panel 13, with the flow divider plate 15 installed in the flow divider plate 141. The flow divider plate 15 is used to distribute and divide the material flow. The flow divider plate 141 has several channels 142 that connect to the fixed mold cavity 111 of the fixed mold plate 11. Each channel 142 is used to install each hot nozzle 16.

[0024] In this embodiment, the fixed mold panel 13 is provided with a main channel 131 connected to the flow divider plate 15 in the middle of the side away from the hot runner template 14, so as to guide the material flow into the flow divider plate 15 in the flow divider cavity 141.

[0025] In this embodiment, the moving mold 2 further includes a mold foot 23, an ejector mechanism 24, and a moving mold panel 25; the moving mold plate 21 is provided with the mold foot 23 and the ejector mechanism 24 on the side away from the fixed mold plate 11, the ejector mechanism 24 is used to eject the product, and the moving mold panel 25 is provided on the other side of the mold foot 23 and the ejector mechanism 24.

[0026] In this embodiment, heat insulation plates 4 are respectively provided on the opposite sides of the moving mold 2 and the fixed mold 1 of the injection mold to reduce heat loss and extend the service life of the equipment.

[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.

[0028] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. An injection mold for a battery separator, comprising a fixed mold and a moving mold; the fixed mold and the moving mold are movably fitted together, forming an injection cavity between them; the fixed mold includes a fixed template, a fixed mold core, a fixed mold panel, a hot runner template, a manifold, and a plurality of hot runner nozzles; the fixed mold core is disposed between the fixed template and the moving mold; the hot runner template is disposed on the side of the fixed template away from the moving mold; the fixed mold panel is mounted on the side of the hot runner template away from the fixed template; the manifold is mounted between the hot runner template and the fixed mold panel; characterized in that: Each hot nozzle has one end connected to the manifold, and the other end passes through the hot runner template, the fixed template and the fixed mold core to connect to the injection cavity. Each hot nozzle is divided into at least four rows, with each row of hot nozzles spaced apart along the width of the injection cavity. Each row of hot nozzles includes multiple hot nozzles spaced apart along the length of the injection cavity. The two outer rows of hot nozzles are open hot nozzles, and the two inner rows of hot nozzles are needle valve type hot nozzles.

2. The injection mold for a battery separator according to claim 1, characterized in that: The hot nozzles in each row are staggered along the length direction, and adjacent hot nozzles are staggered along the width direction.

3. The injection mold for a battery separator according to claim 1, characterized in that: There are 5 hot nozzles in each row.

4. The injection mold for a battery separator according to claim 1, characterized in that: The moving mold includes a moving template and a moving mold core; the fixed template and the moving template are movably fitted together, and the fixed mold core and the moving mold core are respectively housed between them, forming the injection cavity between the fixed mold core and the moving mold core.

5. The injection mold for a battery separator according to claim 4, characterized in that: The fixed mold plate and the moving mold plate are recessed on their respective sides, with a fixed mold core installed in the fixed mold cavity and a moving mold core installed in the moving mold cavity. The hot runner mold plate has a recessed flow distribution cavity on its side near the fixed mold panel, and the flow distribution plate is installed in the flow distribution cavity. The flow distribution cavity has several channels that connect to the fixed mold plate and the fixed mold cavity, and each channel is equipped with a hot nozzle.

6. The injection mold for a battery separator according to claim 4, characterized in that: The moving mold also includes mold feet, an ejector mechanism, and a moving mold panel; the mold feet and ejector mechanism are provided on the side of the moving mold away from the fixed mold plate, the ejector mechanism is used to eject the product, and the moving mold panel is provided on the other side of the mold feet and ejector mechanism.

7. The injection mold for a battery separator according to claim 1, characterized in that: The fixed mold panel has a main channel connected to the flow divider plate in the flow divider cavity at the middle of the side away from the hot runner template.

8. The injection mold for a battery separator according to claim 1, characterized in that: The moving mold and the fixed mold of the injection mold are also provided with heat insulation plates on opposite sides.

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