Lithium battery top cover sheet injection molding mold

Abstract

The utility model discloses a kind of lithium battery top cover piece injection molding processing mould, comprising: bottom die seat and top die seat, the inside of top die seat is equipped with clamping groove, the top of top die seat is equipped with lifting seat;Lifting assembly, including driving part and locating block, the locating block output end is connected with the locating block, locking plate is set between the locating block and the lifting seat;Forming base is set to the top of bottom die seat, the bottom of forming base is evenly equipped with ejector, the inside of forming base is equipped with forming groove and the inside of forming groove is evenly penetrated and is equipped with communicating hole channel;Forming top seat.The utility model can improve the yield of product and the degree of unification of multiple groups of product forming production, can press out different modeling or sign on the surface of battery top cover piece, no longer need additional processing procedure, also can carry out simple and fast height adjustment, convenient to discharge discharge, also convenient to adjust processing according to different product parameters.

Description

Technical Field

[0001] This utility model relates to the field of battery component processing technology, and in particular to an injection molding mold for lithium battery top cover sheet. Background Technology

[0002] The top cover of a lithium battery, also commonly known as the battery top cover, cover plate, or end cap, is a crucial structural component on the top of a lithium battery.

[0003] Lithium battery top cover sheets are typically produced by injection molding plastic material into a mold using an injection molding machine, followed by ejection from the mold after molding. To improve overall production efficiency, existing lithium battery top cover sheet production often involves simultaneous injection molding of multiple sets of lithium battery top cover sheets in a larger mold. However, uneven injection of plastic often leads to varying degrees of deviation in the product. Furthermore, after molding, different shapes or markings are usually pressed onto the surface, making the production process complex. Utility Model Content

[0004] This utility model provides a lithium battery top cover injection molding mold, which can improve the yield and uniformity of products while producing multiple sets of products. Different shapes or logos can be pressed onto the surface of the battery top cover without the need for additional processing steps. It can also be easily and quickly adjusted in height, which is convenient for unloading and can also be easily adjusted according to different product parameters.

[0005] To solve the above-mentioned technical problems, this utility model provides an injection molding die for a lithium battery top cover sheet, comprising:

[0006] The bottom mold base and the top mold base are provided, wherein the top mold base is provided with a locking groove inside and a lifting seat is provided on the top of the top mold base;

[0007] The lifting assembly includes a drive component and a positioning block, wherein the output end of the positioning block is connected to the positioning block, and a locking plate is provided between the positioning block and the lifting seat;

[0008] A molding base is disposed on the top of the bottom mold base. Ejector parts are evenly provided at the bottom of the molding base. A molding groove is provided inside the molding base, and a connecting channel is evenly provided inside the molding groove.

[0009] A forming top seat has extrusion plates evenly arranged inside, and a lifting block is provided on the top of the extrusion plates. Electric push rods are evenly arranged between the lifting block and the top of the inner wall of the forming top seat.

[0010] The injection molding assembly includes an injection cavity and an injection connection port. The injection cavity is disposed inside the slot. Buffer chambers are evenly provided on the top of the injection cavity. Telescopic columns are slidably provided inside the buffer chambers.

[0011] A forming base plate is disposed inside the forming groove, and forming cavities are uniformly provided throughout the forming base plate;

[0012] A forming top plate is disposed inside the forming top seat, and the surface of the forming top plate is uniformly provided with a material passage and a connection port.

[0013] As a preferred embodiment of the above technical solution, the bottom of the bottom mold base is provided with a supporting base plate, the bottom mold base is provided with an installation plate, the surface of the installation plate is uniformly provided with positioning holes, and the ejector is provided inside the positioning holes.

[0014] As a preferred embodiment of the above technical solution, the top of the lifting seat is provided with a top plate, and the top plate and the interior of the lifting seat are uniformly provided with connecting grooves.

[0015] As a preferred embodiment of the above technical solution, the driving component is configured as an electric lead screw, one end of the bottom of the locking plate is fixedly connected to the top mold base and a detection seat is provided on one side, and an infrared sensor and a distance sensor are uniformly provided on the surface of the detection seat.

[0016] As a preferred embodiment of the above technical solution, the surface of the molding base is uniformly surrounded by locking protrusions, the surface of the molding top seat is uniformly surrounded by locking grooves, the locking grooves engage with the locking protrusions, a guide post is provided through the interior of the molding base, one end of the bottom of the guide post is set in the positioning hole on the surface of the mounting plate, and the bottom surface of the molding top seat is provided with a mounting groove that matches the guide post.

[0017] As a preferred embodiment of the above technical solution, the ejector includes an ejector cylinder and an ejector pin. The ejector cylinder is provided with an ejector pin inside, which is located inside the communicating channel. The ejector cylinder is located in the positioning hole on the surface of the mounting plate. An extension groove is uniformly provided on the outer side of the forming groove. A slider is uniformly provided on the outer side of the forming base plate. The slider is slidably connected to the extension groove.

[0018] As a preferred embodiment of the above technical solution, the top of the injection molding connection is connected to an injection molding machine, the injection cavity is uniformly provided with injection channels, the top of the injection channels is provided with a buffer cavity, one end of the top of the buffer cavity is provided with a connecting plate, a hydraulic lifting rod is provided between the telescopic column and the connecting plate, one end of the bottom of the telescopic column is provided with a push plate, one end of the bottom of the injection channel is provided with a discharge pipe, the push plate is slidably connected to the inner wall of the discharge pipe, and the injection molding connection and the connecting plate are respectively provided through the connecting groove.

[0019] As a preferred embodiment of the above technical solution, a water pipe is provided around the outside of the injection molding component. The water pipe is filled with cooling water and has a connecting pipe uniformly connected to its bottom. The connecting pipe passes through the top molding plate and the bottom molding plate and extends into the connecting channel.

[0020] As a preferred embodiment of the above technical solution, the molding cavity is provided with an injection port, the material outlet and the connection port are respectively located at the top of the molding cavity and the injection port, and the material discharge pipe extends into the connection port.

[0021] As a preferred embodiment of the above technical solution, the molding base and the molding top are uniformly provided with exhaust chambers, and the exhaust chambers are provided with exhaust valves at their ends. The exhaust valves are connected to exhaust pipes and extend into the molding base plate and the molding top plate respectively.

[0022] This utility model provides a lithium battery top cover injection molding mold, which includes a lifting assembly, a molding base, a molding top seat, an injection assembly, a molding bottom plate, and a molding top plate. The injection plastic enters the injection cavity of the injection assembly through the injection connection port and smoothly fills different injection channels. The injection plastic is then conveyed downwards through a feeding tube into the molding cavity of the molding bottom plate. A hydraulic lifting rod moves a telescopic column downwards and, through a push plate, gradually presses the material in the feeding tube downwards, allowing the material in multiple feeding tubes to be conveyed synchronously and uniformly, entering the injection port of the molding cavity through the connection port. The material is shaped between the molding bottom plate and the molding top plate, improving the yield and uniformity of multiple product molding processes simultaneously. Simultaneously, multiple electric push rods at the bottom of the molding top seat push the lifting block downwards, causing the extrusion plate to penetrate into the feeding port to limit and compact the internally molded battery top cover, improving product uniformity, expelling internal gas, preventing air bubbles, and allowing different shapes or markings to be pressed onto the surface of the battery top cover. No additional processing steps are required. During injection molding, the water pipes and connecting pipes exchange heat in the area close to the molding zone. This efficient and uniform heat exchange shortens the molding cycle. After molding, the slider can be adjusted within the extension groove to move and move away from the undercut area of ​​the product before ejecting it, improving ejection efficiency. Furthermore, the position of the mounting plate on the bottom mold base can be adjusted according to the product's size, and the height of the guide pillars can be adjusted to regulate the distance between the molding base and the molding top base. The lifting assembly's drive mechanism can also adjust the position of the lifting seat and the top mold base, allowing for simple and quick height adjustment. This facilitates material unloading and allows for easy adjustments based on different product parameters. The entire mold can produce multiple products simultaneously, improving product yield and uniformity. Different shapes or markings can be pressed onto the surface of the battery top cover, eliminating the need for additional processing steps. Simple and quick height adjustment facilitates material unloading and allows for easy adjustments based on different product parameters.

[0023] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is an exploded view of the overall structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the lifting component structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the molding base and molding top of this utility model;

[0028] Figure 5 This is an exploded view of the molding base and molding top of this utility model.

[0029] In the diagram: 1 Bottom mold base, 11 Support base plate, 12 Mounting plate, 2 Top mold base, 21 Locking slot, 3 Lifting seat, 31 Top plate, 32 Connecting slot, 4 Lifting assembly, 41 Driving component, 42 Positioning block, 43 Locking plate, 44 Detection seat, 5 Molding base, 51 Locking protrusion, 52 Ejector, 53 Molding groove, 54 Connecting channel, 55 Extension groove, 56 Guide post, 6 Molding top seat, 61 Locking groove, 62 Extrusion plate, 63 Lifting block, 7 Injection assembly, 71 Injection connection port, 72 Buffer cavity, 73 Connecting plate, 74 Telescopic column, 75 Water pipe, 76 Connecting pipe, 8 Molding base plate, 81 Molding cavity, 82 Injection port, 83 Slider, 9 Molding top plate, 91 Material inlet, 92 Connecting port, 10 Exhaust valve, 101 Exhaust pipe. Detailed Implementation

[0030] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0031] See Figure 1-5 This utility model provides an injection molding die for a lithium battery top cover sheet, comprising:

[0032] The bottom mold base 1 and the top mold base 2 are provided. The top mold base 2 is provided with a locking groove 21 and a lifting seat 3 is provided on the top of the top mold base 2.

[0033] The lifting assembly 4 includes a drive component 41 and a positioning block 42. The output end of the positioning block 42 is connected to the positioning block 42. A locking plate 43 is provided between the positioning block 42 and the lifting seat 3.

[0034] A molding base 5 is set on the top of the bottom mold base 1. Ejector parts 52 are evenly provided at the bottom of the molding base 5. A molding groove 53 is provided inside the molding base 5, and a connecting channel 54 is evenly provided inside the molding groove 53.

[0035] The forming top seat 6 has an extrusion plate 62 evenly arranged inside. A lifting block 63 is provided on the top of the extrusion plate 62. An electric push rod is evenly arranged between the lifting block 63 and the top of the inner wall of the forming top seat 6.

[0036] Injection assembly 7 includes an injection cavity and an injection connection port 71. The injection cavity is located inside the slot 21. Buffer chambers 72 are evenly provided on the top of the injection cavity. Telescopic columns 74 are slidably provided inside the buffer chambers 72.

[0037] A forming base plate 8 is disposed inside the forming groove 53, and forming cavities 81 are uniformly provided throughout the forming base plate 8;

[0038] A forming top plate 9 is set inside the forming top seat 6, and a material passage 91 and a connection port 92 are uniformly provided on the surface of the forming top plate 9.

[0039] This embodiment provides a lithium battery top cover injection molding mold, which includes a lifting assembly 4, a molding base 5, a molding top seat 6, an injection assembly 7, a molding bottom plate 8, and a molding top plate 9. The injection plastic enters the injection cavity of the injection assembly 7 through the injection connection port 71 and smoothly fills different injection channels. The injection plastic is then conveyed downwards into the molding cavity 81 of the molding bottom plate 8 via a feed tube. The hydraulic lifting rod moves the telescopic column 74 downwards and, through a push plate, gradually presses the material in the feed tubes downwards, causing the material inside the multiple feed tubes to... The material is conveyed synchronously and at a uniform speed and enters the injection port 82 of the molding cavity 81 through the connection port 92. It is shaped between the molding base plate 8 and the molding top plate 9, improving the yield and uniformity of products while producing multiple sets of products. At the same time, the operation of multiple electric push rods at the bottom of the molding top seat 6 can push the lifting block 63 downward, driving the extrusion plate 62 into the material inlet 91 to limit and compact the internally formed battery top cover sheet, improving the uniformity of the product, expelling internal gas and avoiding the formation of air bubbles. At the same time, different shapes or designs can be pressed onto the surface of the battery top cover sheet. The markings no longer require additional processing steps. During injection molding, the water pipe 75 and connecting pipe 76 exchange heat in the area close to the molding. Efficient and uniform heat exchange can shorten the molding cycle. After molding, the slider 83 can be adjusted in the extension groove 55 to move and adjust its position, disengaging from the undercut area of ​​the product, and then ejecting the product, improving ejection efficiency. In addition, the position of the mounting plate 12 on the surface of the bottom mold base 1 can be adjusted according to the different models and sizes of the products. The height of the guide column 56 can be adjusted to adjust the distance between the molding base 5 and the molding top base 6. The operation of the driving component 41 of the lifting assembly 4 can also adjust and raise the position of the lifting seat 3 and the top mold base 2, enabling simple and quick height adjustment, facilitating material discharge and unloading, and making it convenient to adjust processing according to different product parameters. The entire mold can produce multiple sets of products while improving the product yield and uniformity. Different shapes or markings can be pressed onto the surface of the battery top cover without additional processing steps. It also allows for simple and quick height adjustment, facilitating material discharge and unloading, and making it convenient to adjust processing according to different product parameters.

[0040] In a further embodiment of this invention, a support base plate 11 is provided at the bottom of the bottom mold base 1, and an installation plate 12 is provided inside the bottom mold base 1. Positioning holes are uniformly provided through the surface of the installation plate 12, and the ejector 52 is disposed inside the positioning holes.

[0041] After the support base plate 11 in this embodiment is locked and positioned, the height of the mounting plate 12 can be adjusted to provide support for the top component at different heights.

[0042] In a further embodiment of this invention, the top of the lifting seat 3 is provided with a top plate 31, and the top plate 31 and the interior of the lifting seat 3 are uniformly provided with connecting grooves 32.

[0043] In this embodiment, the top of the lifting seat 3 is connected to the injection molding machine, and the injection plastic enters the injection cavity inside the connecting groove 32 through the discharge port of the injection molding machine.

[0044] In a further embodiment of this invention, the drive component 41 is configured as an electric lead screw, one end of the bottom of the locking plate 43 is fixedly connected to the top mold base 2 and a detection seat 44 is provided on one side, and an infrared sensor and a distance sensor are uniformly provided on the surface of the detection seat 44.

[0045] In this embodiment, the drive unit 41 can also adjust the position of the lifting seat 3 and the top mold seat 2, allowing for simple and quick height adjustment. This facilitates material unloading and processing adjustments based on different product parameters. Meanwhile, the detection seat 44 can monitor the lifting height and data in real time to ensure that the parameters of different components are adjusted accordingly.

[0046] In a further embodiment of this invention, the surface of the molding base 5 is uniformly surrounded by locking protrusions 51, and the surface of the molding top seat 6 is uniformly surrounded by locking grooves 61. The locking grooves 61 engage with the locking protrusions 51. A guide post 56 is provided through the interior of the molding base 5. One end of the bottom of the guide post 56 is located in the positioning hole on the surface of the mounting plate 12. The bottom surface of the molding top seat 6 is provided with a mounting groove that matches the guide post 56.

[0047] In this embodiment, the molding base 5 and the molding top seat 6 are externally locked and positioned by the locking groove 61 and the locking protrusion 51, and are internally positioned and connected by the guide column 56. At the same time, a hydraulic lifting rod can be provided inside the guide column. A support plate is provided at the top end of the hydraulic lifting rod. When the hydraulic lifting rod is working, it can push the support plate to lift the entire molding top seat 6, which is convenient for material discharge and unloading.

[0048] In a further embodiment of this invention, the ejector 52 includes an ejector cylinder and an ejector pin. The ejector cylinder is provided with an ejector pin inside, and the ejector pin is disposed inside the communicating channel 54. The ejector cylinder is disposed in the positioning hole on the surface of the mounting plate 12. The outer side of the forming groove 53 is uniformly provided with an extension groove 55. The outer side of the forming base plate 8 is uniformly provided with a slider 83, and the slider 83 is slidably connected to the extension groove 55.

[0049] In this embodiment, the ejector pin in the ejector cylinder can eject the formed product from the molding cavity 81 through the connecting channel 54. The end of the second electric push rod can be connected to the slider 83 in the extension groove 55. When the second electric push rod is working, it pushes the slider 83 and the molding base plate 8 to move and adjust their positions, so that they are separated from the undercut area of ​​the product, and then the product is ejected, thereby improving the ejection efficiency.

[0050] In a further embodiment of this invention, the top of the injection molding connection port 71 is connected to an injection molding machine, the injection molding cavity is uniformly provided with injection molding channels, the top of the injection molding channel is provided with a buffer cavity 72, one end of the top of the buffer cavity 72 is provided with a connecting plate 73, a hydraulic lifting rod is provided between the telescopic column 74 and the connecting plate 73, one end of the bottom of the telescopic column 74 is provided with a push plate, one end of the bottom of the injection molding channel is provided with a discharge pipe, the push plate is slidably connected to the inner wall of the discharge pipe, and the injection molding connection port 71 and the connecting plate 73 are respectively provided through the connecting groove 32.

[0051] In this embodiment, the injection connection port 71 allows the injection plastic material discharged from the injection molding machine to enter the injection cavity of the injection assembly 7 and smoothly fill different injection channels. The injection plastic material can be conveyed downward into the molding cavity 81 of the molding base plate 8 through the feed pipe. The operation of the hydraulic lifting rod can drive the telescopic column 74 to move downward and gradually press the material in the feed pipe downward through the push plate, so that the material in the multiple feed pipes is conveyed synchronously and uniformly and enters the injection port 82 of the molding cavity 81 through the connection port 92, and is shaped between the molding base plate 8 and the molding top plate 9.

[0052] In a further embodiment of this invention, a water pipe 75 is provided around the outside of the injection molding component 7. The water pipe 75 is filled with cooling water and a connecting pipe 76 is uniformly connected to the bottom. The connecting pipe 76 passes through the molding top plate 9 and the molding bottom plate 8 and extends into the connecting channel 54.

[0053] In this embodiment, the water pipes 75 and connecting pipes 76 perform heat exchange operations in the area close to the molding process. The water pipes 75 and connecting pipes 76 are numerous and evenly distributed, and the efficient and uniform heat exchange can shorten the molding cycle.

[0054] In a further embodiment of this invention, the molding cavity 81 is provided with an injection port 82, a material outlet 91 and a connection port 92 are respectively provided on the top of the molding cavity 81 and the injection port 82, and the material discharge pipe extends into the connection port 92.

[0055] In this embodiment, the multiple electric push rods at the bottom of the molding top seat 6 can push the lifting block 63 downward, causing the extrusion plate 62 to penetrate into the feed inlet 91 to limit and compact the internally formed battery top cover sheet, improve the uniformity of the product, expel internal gas, avoid the generation of air bubbles, and at the same time, different shapes or marks can be pressed onto the surface of the battery top cover sheet without the need for additional processing steps.

[0056] In a further embodiment of this invention, the molding base 5 and the molding top plate 6 are uniformly provided with exhaust chambers, and the exhaust chambers are provided with exhaust valves 10 at their ends. The exhaust valves 10 are connected to exhaust pipes 101 and extend into the molding base plate 8 and the molding top plate 9 respectively.

[0057] In this embodiment, the exhaust valve 10 discharges air between the molding base plate 8 and the molding top plate 9, as well as gases generated by plastic decomposition, during the injection molding process, thereby preventing defects such as incomplete filling and air bubbles in the product and improving the yield.

[0058] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0059] 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 at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A lithium battery top cover sheet injection molding mold, characterized in that, include: Bottom mold base (1) and top mold base (2), the top mold base (2) is provided with a locking groove (21) inside, and a lifting seat (3) is provided on the top of the top mold base (2); The lifting assembly (4) includes a drive component (41) and a positioning block (42). The output end of the positioning block (42) is connected to the positioning block (42), and a locking plate (43) is provided between the positioning block (42) and the lifting seat (3). A molding base (5) is set on the top of the bottom mold base (1). The bottom of the molding base (5) is uniformly provided with ejector parts (52). The molding base (5) is provided with a molding groove (53) and a connecting channel (54) is uniformly provided inside the molding groove (53). The molding top seat (6) has an extrusion plate (62) evenly arranged inside. The top of the extrusion plate (62) is provided with a lifting block (63). An electric push rod is evenly arranged between the lifting block (63) and the top of the inner wall of the molding top seat (6). The injection molding assembly (7) includes an injection cavity and an injection connection port (71). The injection cavity is located inside the slot (21). A buffer cavity (72) is uniformly provided on the top of the injection cavity. A telescopic column (74) is slidably provided inside the buffer cavity (72). A molding base plate (8) is disposed inside the molding groove (53), and a molding cavity (81) is uniformly provided inside the molding base plate (8). A forming top plate (9) is disposed inside the forming top seat (6), and a material passage (91) and a connection port (92) are uniformly provided on the surface of the forming top plate (9).

2. The injection molding mold for a lithium battery top cover sheet according to claim 1, characterized in that, The bottom of the bottom mold base (1) is provided with a support base plate (11), and the bottom mold base (1) is provided with an installation plate (12). The surface of the installation plate (12) is uniformly provided with positioning holes, and the ejector (52) is provided inside the positioning holes.

3. The injection molding mold for a lithium battery top cover sheet according to claim 1, characterized in that, The top of the lifting seat (3) is provided with a top plate (31), and the top plate (31) and the interior of the lifting seat (3) are uniformly provided with connecting grooves (32).

4. The injection mold for a lithium battery top cover sheet according to claim 1, characterized in that, The driving component (41) is an electric lead screw. One end of the bottom of the locking plate (43) is fixedly connected to the top mold base (2) and a detection seat (44) is provided on one side. Infrared sensors and distance sensors are uniformly provided on the surface of the detection seat (44).

5. The injection molding mold for a lithium battery top cover sheet according to claim 2, characterized in that, The surface of the molding base (5) is uniformly surrounded by locking protrusions (51), and the surface of the molding top seat (6) is uniformly surrounded by locking grooves (61). The locking grooves (61) engage with the locking protrusions (51). The interior of the molding base (5) is provided with a guide post (56). One end of the bottom of the guide post (56) is located in the positioning hole on the surface of the mounting plate (12). The bottom surface of the molding top seat (6) is provided with a mounting groove that matches the guide post (56).

6. The injection mold for a lithium battery top cover sheet according to claim 2, characterized in that, The ejector (52) includes an ejector cylinder and an ejector pin. The ejector cylinder is provided with an ejector pin inside. The ejector pin is located inside the connecting channel (54). The ejector cylinder is located in the positioning hole on the surface of the mounting plate (12). The outer side of the forming groove (53) is provided with an extension groove (55). The outer side of the forming base plate (8) is provided with a slider (83). The slider (83) is slidably connected to the extension groove (55).

7. The injection mold for a lithium battery top cover sheet according to claim 3, characterized in that, The injection connection port (71) is connected to an injection molding machine at the top. The injection cavity is uniformly provided with injection channels. A buffer cavity (72) is provided at the top of the injection channel. A connecting plate (73) is provided at one end of the top of the buffer cavity (72). A hydraulic lifting rod is provided between the telescopic column (74) and the connecting plate (73). A push plate is provided at one end of the bottom of the telescopic column (74). A discharge pipe is provided at one end of the bottom of the injection channel. The push plate is slidably connected to the inner wall of the discharge pipe. The injection connection port (71) and the connecting plate (73) are respectively provided through the connecting groove (32).

8. The injection mold for a lithium battery top cover sheet according to claim 7, characterized in that, The injection molding assembly (7) is surrounded by a water pipe (75), which is filled with cooling water and has a connecting pipe (76) uniformly connected at the bottom. The connecting pipe (76) passes through the molding top plate (9) and the molding bottom plate (8) and extends into the connecting channel (54).

9. The injection mold for a lithium battery top cover sheet according to claim 7, characterized in that, The molding cavity (81) is provided with an injection port (82), the material outlet (91) and the connection port (92) are respectively located at the top of the molding cavity (81) and the injection port (82), and the material discharge pipe extends into the connection port (92).

10. The injection mold for a lithium battery top cover sheet according to claim 1, characterized in that, The molding base (5) and the molding top plate (6) are uniformly provided with exhaust chambers. An exhaust valve (10) is provided at the end of the exhaust chamber. The exhaust valve (10) is connected to an exhaust pipe (101) and extends into the molding base plate (8) and the molding top plate (9) respectively.

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