Injection mold for battery shell production

Abstract

The utility model provides an injection mold for battery case production, which comprises an upper mold cavity and a lower mold cavity, the upper mold cavity and the lower mold cavity are respectively provided with a mold core matched with a part to be subjected to injection molding in shape, the upper mold cavity is provided with an injection molding opening, the lower part of the lower mold cavity is provided with an ejection assembly, and the ejection assembly comprises an ejection rod arranged at the lower part of the lower mold cavity. An ejector rod is arranged in the lower mold cavity, the ejector rod penetrates through the lower mold cavity, a sealing structure is arranged between the upper portion of the ejector rod and the lower mold cavity, a force application piece is arranged on the lower portion of the ejector rod, and the force application piece can push a product subjected to injection molding and shaping to be ejected upwards. The problems that a traditional injection mold usually conducts mold stripping or mold splitting in a knocking or shaking mode after finished product production is completed, operation is inconvenient, and efficiency is low are solved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, specifically to an injection mold used in the production of battery casings. Background Technology

[0002] With the development of society and economy and the continuous improvement of people's living standards, plastic battery casings are widely used in various industries due to their advantages such as light weight, fast molding, low cost, and good acid and corrosion resistance. The outermost carrier of the battery is also made of plastic. As an important component of the outer carrier, the quality of the battery casing will directly or indirectly affect the quality of the battery.

[0003] An existing injection mold, as disclosed in Chinese invention patent application CN 102285069 A entitled "An Injection Mold," includes a panel, a sprue ejector plate, a sprue plate, an A-plate, an ejector plate, a fixed plate, a base plate, a first pull plate, guide pillars, a first fixing screw, a second pull plate, a second fixing screw, a nozzle, a sprue edge, a large pull rod, a limit screw, and a spacer screw. The panel is fixed to the fixed platen of the injection molding machine and remains stationary. The base plate is fixed to the moving platen of the injection molding machine and moves with the moving platen during mold opening and closing. The fixed plate and the base plate are fixed together by the first fixing screw, and the sprue plate and the A-plate are fixed together by the second fixing screw. Together, the limiting screw restricts the mold opening distance between the sprue push plate and the panel; the first pull plate and the sprue edge restrict the distance between the sprue push plate and the sprue plate after mold opening; the large pull rod restricts the mold opening distance for taking out the battery case, i.e., the mold opening distance between plate A and the push plate, and pulls the push plate open to push out the battery case; the second pull plate restricts the distance for pushing out the battery case, i.e., the distance between the fixed plate and the push plate; the first pull plate is fixed on the sprue push plate; the second pull plate is fixed on the fixed plate; the guide post and the sprue edge play a guiding and supporting role when each template is opened and closed; the characteristic is that the fixing screw of the first pull plate is fixed on plate A.

[0004] Using the mold described above, after injection molding, the molded product needs to be separated from the mold cavity by vibration or knocking. This operation is cumbersome, inefficient, and may even cause unnecessary damage or deformation to the product, affecting product quality. Utility Model Content

[0005] In view of this, the present invention provides an injection mold for battery casing production, which can achieve efficient and convenient demolding of the finished product after injection molding through an ejection component, making it more convenient and efficient, and greatly improving the quality of the demolded product.

[0006] To solve the above-mentioned technical problems, this utility model provides an injection mold for battery casing production, including an upper mold cavity and a lower mold cavity. The upper and lower mold cavities are each provided with a mold core adapted to the shape of the part to be injection molded. The mold core is adapted to the finished product of the injection mold. An injection port is provided on the upper mold cavity, and the injection port is connected to the discharge port of the injection molding machine via a pipe. An ejection assembly is provided at the lower part of the lower mold cavity. The ejection assembly includes an ejector rod located at the lower part of the lower mold cavity, which penetrates the lower mold cavity. A sealing structure is provided between the upper part of the ejector rod and the lower mold cavity. The sealing structure is made of fluororubber or polytetrafluoroethylene and its size is larger than the diameter of the ejector rod. A force-applying component is provided at the lower part of the ejector rod, which can push the injection-molded product upwards. This utility model can quickly and efficiently eject the injection-molded product from the lower mold cavity by the upward pushing action of the ejector rod, solving the problem that traditional injection molds usually rely on knocking or shaking to demold or separate the mold after the finished product is produced, which is inconvenient and inefficient.

[0007] The force-applying component includes a driving component, which can push the ejector rod upward. The driving component can be used by the operator with auxiliary workpieces of high hardness such as hammers or steel bars. This utility model can achieve efficient, fast and stable ejection of the ejector rod from the lower mold cavity after the product has been molded and shaped through the action of the driving component, which is more efficient and convenient.

[0008] There are at least four ejector pins, evenly distributed below the lower mold cavity. The lower mold cavity has through slots that match the ejector pins, and the number of through slots is the same as the number of ejector pins. Each through slot contains a spring, and the ejector pin has a heat insulation plate that matches the spring. The upper part of the spring is located below the heat insulation plate, and the spring is sleeved on the outside of the ejector pin. This invention can block the heat of the injection molded part during the molding process through the heat insulation plate. Moreover, through the reciprocating impact of the spring after continuous compression and its restoring elasticity, the ejector pin is driven upward to reciprocate and eject the injection molded part in the lower mold cavity, greatly improving the demolding effect and efficiency.

[0009] The driving component is a telescopic push rod, and a connecting plate is provided at the lower part of multiple push rods. The output rod end of the telescopic push rod is located at the lower part of the connecting plate. The telescopic push rod is a hydraulic push rod. This utility model can push the connecting plate and the push rod on the connecting plate upward by extending the output rod of the telescopic push rod to push the product after it has been shaped in the lower mold cavity for quick demolding, making the operation more convenient.

[0010] Multiple lifting rings are also provided on the outer sides of the upper and lower mold cavities. This utility model can facilitate the quick assembly and separation of the upper and lower mold cavities by using the lifting rings, which greatly improves the portability of assembling and disassembling the upper and lower molds.

[0011] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0012] 1. This utility model can achieve efficient ejection of the injection-molded workpiece in the lower mold cavity by the ejection component set at the bottom of the lower mold cavity moving upward under the action of the force-applying component, making the operation more convenient and efficient.

[0013] 2. This utility model can block the heat of the injection molded part during the molding process by using the heat insulation plate. Moreover, the spring can reciprocate and eject the injection molded part into the lower mold cavity by repeatedly impacting it with the ejector rod after continuous compression and its restoring elasticity. This greatly improves the demolding effect and efficiency.

[0014] 3. This utility model can conveniently and quickly combine and separate the upper and lower mold cavities using the lifting ring, greatly improving the portability of assembling and disassembling the upper and lower molds. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the injection mold used in the production of battery casings according to this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a side view of the injection mold used in the production of battery casings according to this utility model;

[0018] Figure 4 This utility model Figure 3 Sectional view at point BB.

[0019] Explanation of reference numerals in the attached drawings: 100, upper mold cavity; 200, lower mold cavity; 300, ejector assembly; 301, ejector pin; 302, force-applying component; 303, through groove; 304, spring; 400, lifting ring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1-2As shown: This embodiment provides an injection mold for battery casing production, including an upper mold cavity 100 and a lower mold cavity 200. The upper mold cavity 100 and the lower mold cavity 200 are each provided with a mold core adapted to the shape of the part to be injection molded. The mold core is adapted to the finished product of the mold. An injection port is provided on the upper mold cavity 100, and the injection port is connected to the discharge port of the injection molding machine via a pipe. An ejector assembly 300 is provided at the lower part of the lower mold cavity 200. The ejector assembly 300 includes an ejector rod 301 disposed at the lower part of the lower mold cavity 200, the ejector rod 301 penetrating the lower mold cavity 200, and the upper part of the ejector rod 301... A sealing structure is provided between the upper part and the lower mold cavity 200. The sealing structure is made of fluororubber or polytetrafluoroethylene and its size is larger than the diameter of the ejector rod 301. A force-applying element 302 is provided at the lower part of the ejector rod 301. The force-applying element 302 can push the injection-molded product upward. This utility model can quickly and efficiently eject the injection-molded product in the lower mold cavity 200 by the upward pushing action of the ejector rod 301. It solves the problem that traditional injection molds usually rely on knocking or shaking to demold or separate the mold after the finished product is produced, which is inconvenient and inefficient.

[0022] The force-applying component 302 includes a driving component, which can push the ejector rod 301 upward. The driving component can be used by the operator with auxiliary workpieces of high hardness such as hammers or steel bars. This utility model can achieve the efficient, fast and stable ejection of the ejector rod 301 from the lower mold cavity 200 after the product has been molded and shaped by injection through the action of the driving component, which is more efficient and convenient.

[0023] According to another embodiment of the present invention, such as Figure 1 and Figure 3As shown, there are at least four ejector pins 301, evenly distributed below the lower mold cavity 200. The lower mold cavity 200 has through slots 303 adapted to the ejector pins 301, the number of which is the same as the number of ejector pins 301. Each through slot 303 contains a spring 304. A heat insulation plate adapted to the spring 304 is mounted on the ejector pin 301. The upper part of the spring 304 is located below the heat insulation plate, and the spring 304 is sleeved on the outside of the ejector pin 301. A pressure cylinder is located at the lower part of the spring 304, and the ejector pin 301 is inserted into the pressure cylinder. The driving component is a telescopic push rod. A connecting plate is provided at the lower part of the multiple ejector pins 301. The output rod end of the telescopic push rod is located below the connecting plate. The telescopic push rod is a hydraulic... The lower part of the push rod and the upper part of the pressure cylinder are fixed together with the connecting plate. This utility model can block the heat of the injection molded part during the molding process through the heat insulation plate. This utility model can push the connecting plate and the ejector rod 301 on the connecting plate upward under the action of the extension of the output rod of the telescopic push rod to push the molded product in the lower mold cavity 200 for rapid demolding, which is more convenient to operate. In this process, the pressure cylinder will continuously compress the spring 304 upward under the pushing action of the connecting plate, and then, under the reciprocating impact action of its restoring elasticity, it will carry the ejector rod 301 upward to reciprocate the ejection operation of the injection molded part in the lower mold cavity 200, which greatly improves the demolding effect and efficiency.

[0024] According to another embodiment of the present invention, such as Figure 1 and Figure 4 As shown, multiple lifting rings 400 are also provided on the outer side of the upper mold cavity 100 and the lower mold cavity 200. This utility model can conveniently and quickly realize the lifting tool to quickly combine the upper mold cavity 100 and the lower mold cavity 200 and conveniently separate them through the function of the lifting rings 400, which greatly improves the portability of the upper mold and the lower mold assembly and disassembly.

[0025] How to use this utility model:

[0026] First, it needs to be clarified that the injection mold involved in this utility model is mainly used for the production of plastic workpieces, especially for injection molding of housings. This utility model takes the demolding operation of a battery casing in the injection molding process as an example to describe its usage method in detail. After injection molding is completed and the product cools and solidifies, the operator first removes the fastening bolts between the upper mold cavity 100 and the lower mold cavity 200 one by one. Then, the operator uses a crane and slings to hang the slings on the lifting ring 400 of the upper mold cavity 100. Then, the operator starts the crane to lift the upper mold cavity 100 to a safe height. Then, the operator starts the extension... The output rod of the telescopic push rod extends, and through the extension of the output rod, it can push the connecting plate and the ejector rod 301 on the connecting plate upward to push the product that has been shaped in the lower mold cavity 200 and lift it up. During this process, the spring 304 is compressed, and the compressed spring 304 pushes the heat insulation plate and the ejector rod 301 upward and reciprocates, which greatly enhances the demolding operation of the finished product shaped in the lower mold cavity 200 and makes the operation more convenient. This utility model can realize efficient and convenient demolding operation of the injection molded finished product through the ejection component 300, which is more convenient and efficient and greatly improves the quality of the demolded product.

[0027] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and 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 according to the specific circumstances.

[0028] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A injection mold for battery case production, comprising an upper mold cavity (100) and a lower mold cavity (200), the upper mold cavity (100) and the lower mold cavity (200) are respectively provided with a mold core matched with the shape of a to-be-injected part, and the upper mold cavity (100) is provided with an injection port, characterized in that: The lower part of the lower mold cavity (200) is provided with an ejection assembly (300), the ejection assembly (300) comprises a ejector rod (301) arranged at the lower part of the lower mold cavity (200), the ejector rod (301) penetrates the lower mold cavity (200), a sealing structure is arranged between the upper part of the ejector rod (301) and the lower mold cavity (200), and the lower part of the ejector rod (301) is provided with a force applying element (302), the force applying element (302) can push the product after injection molding and shaping upwards.

2. The injection mold for battery case production according to claim 1, characterized by: The force applying element (302) comprises a driving element, the driving element can push the ejector rod (301) upwards.

3. The injection mold for battery case production as claimed in claim 2, wherein: The ejector rod (301) is at least four, and is arranged below the lower mold cavity (200), the lower mold cavity (200) is provided with a through slot (303) matched with the ejector rod (301), the number of the through slot (303) is same as that of the ejector rod (301), a spring (304) is arranged in each through slot (303), the ejector rod (301) is provided with a heat insulation plate matched with the spring (304), the upper part of the spring (304) is located at the lower part of the heat insulation plate, and the spring (304) is sleeved outside the ejector rod (301).

4. The injection mold for battery case production as claimed in claim 3, wherein: The driving element is a telescopic push rod, the lower part of the plurality of ejector rods (301) is provided with a connecting plate, and the output rod end of the telescopic push rod is located at the lower part of the connecting plate.

5. The injection mold for battery case production as claimed in claim 4, wherein: The telescopic push rod is a hydraulic push rod.

6. The injection mold for battery case production as claimed in claim 5, wherein: The outer side of the upper mold cavity (100) and the lower mold cavity (200) is further provided with a plurality of lifting rings (400).

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