Lithium battery cover plate injection molding device and method

Abstract

The invention relates to the technical field of lithium battery cover plate processing, and discloses a lithium battery cover plate injection molding device and method.The lithium battery cover plate injection molding device comprises a base, a sliding base is fixed to the base, a first injection molding plate is fixed to the sliding base, a second injection molding plate is movably installed on the sliding base, the second injection molding plate and the first injection molding plate are arranged in a matched mode, and an injection molding barrel is detachably installed on the sliding base; and a piston is movably mounted in the injection molding cylinder, and a rotating rod is rotationally arranged on the piston. Through the arrangement of the sliding seat, the first injection molding plate and the second injection molding plate can be conveniently mounted, so that the second injection molding plate is conveniently pushed to move, and injection molding and demolding work is achieved; water supply pipes are wound in the second injection molding plate and the first injection molding plate, so that water cooling heat dissipation is facilitated through the water supply pipes, subsequent demolding work is facilitated, and the injection molding period of the lithium battery cover plate is shortened; the injection molding barrel is arranged, the piston is arranged in the injection molding barrel, the injection molding raw materials can be pushed through movement of the piston, and pressure-equalizing injection molding is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery cover plate processing and discloses a lithium battery cover plate injection molding device and method. Background Art

[0002] Lithium battery cover is an important component of lithium battery, mainly used to protect the positive and negative electrodes of lithium battery, and prevent problems such as internal short circuit of battery caused by external factors. It can enhance the cycle life of battery, extend the service life of lithium battery, and improve the stability and reliability of battery, ensuring the long-term stable operation of lithium battery.

[0003] During the processing of lithium battery cover plates, traditional lithium battery cover plate injection molding technology mostly uses general injection molding machines to complete the injection molding process by opening and closing the mold. However, this type of method has problems such as long injection molding cycle and high product defect rate (such as shrinkage holes and flash) when dealing with battery covers with complex structures and high precision requirements. In addition, the uneven distribution of temperature and pressure in the traditional injection molding process also limits the further improvement of product quality. In order to overcome these challenges, the market urgently needs an innovative injection molding device and method that can improve production efficiency and reduce costs while ensuring product performance. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a lithium battery cover plate injection molding device and method, which can efficiently perform injection molding on the lithium battery cover plate and reduce the wear and tear of the lithium battery cover plate and the injection molding cycle.

[0005] In order to solve the above technical problems, the present invention proposes the following technical solutions:

[0006] A lithium battery cover plate injection molding device comprises a base, a slide is fixed on the base, a first injection molding plate is fixed on the slide, a second injection molding plate is movably mounted on the slide, the second injection molding plate is matched with the first injection molding plate, an injection molding cylinder is detachably mounted on the slide, the end of the injection molding cylinder is movably connected to the first injection molding plate, a piston is movably mounted inside the injection molding cylinder, and a rotating rod is rotatably arranged on the piston; water supply pipes are wound around the insides of the second injection molding plate and the first injection molding plate.

[0007] Furthermore, a feed port is connected to the side of the first injection plate, a flange is installed on the feed port, the flange is movably connected to the liquid outlet of the injection cylinder, and a feed port is opened on the injection cylinder, and a valve is installed in the feed port.

[0008] Furthermore, a first cylinder is detachably mounted on the slide seat, a push rod is connected to the telescopic end of the first cylinder, an end of the push rod is connected to the piston, a motor is mounted inside the piston, an output end of the motor is connected to the rotating rod, a sealed bearing is embedded in the end of the piston, an inner ring of the sealed bearing is used to connect the rotating rod and the output end of the motor, the rotating rod is matched with the liquid outlet of the injection molding cylinder, and the rotating rod is spirally arranged as a whole.

[0009] Furthermore, a second cylinder is fixed on the slide seat, an output end of the second cylinder is connected to the second injection molding plate, and the bottom of the second injection molding plate is slidably arranged on the slide seat.

[0010] Furthermore, the water supply pipe is arranged in a straight wave line shape inside the first injection molding plate and the second injection molding plate, and the two ends of the water supply pipe are respectively connected to the water supply port and the drainage port. A third cylinder is fixed to the side of the second injection molding plate, and the output end of the third cylinder passes through the second injection molding plate and is connected to a push block, and the push block is movably fitted to the second injection molding plate.

[0011] The present invention also includes a lithium battery cover plate injection molding method, the injection molding method comprising the following steps:

[0012] S1, prepare materials: inject the raw materials for injection molding into the injection molding cylinder through the feeding port;

[0013] S2, injection molding: control the first cylinder to start, drive the push rod to move in the injection cylinder, drive the piston to move, push the raw materials for injection molding, and realize the injection molding work;

[0014] S3, demolding: inject circulating clean water into the water supply pipe so that the water supply pipe can dissipate heat for the injection-molded lithium battery cover plate, control the second cylinder to drive the second injection molding plate to move, and synchronously control the third cylinder to drive the push block to move, thereby achieving demolding.

[0015] Furthermore, in S2, before performing the injection molding work, the piston is pushed to the rightmost end, and the injected injection molding material is pushed by the piston, and the motor is synchronously controlled to drive the rotating rod to prevent the injection molding material from accumulating and solidifying.

[0016] It can be seen from the above technical solution that the beneficial effects of the present invention are:

[0017] The present invention provides a sliding seat to facilitate the installation of the first injection molding plate and the second injection molding plate, so that the second injection molding plate can be pushed to move to realize the injection molding and demolding work; by winding a water supply pipe around the inside of the second injection molding plate and the first injection molding plate, it is convenient to carry out water cooling and heat dissipation through the water supply pipe, so as to facilitate the subsequent demolding work and reduce the injection molding cycle of the lithium battery cover plate; by providing an injection molding cylinder and a piston in the injection molding cylinder, the injection molding material can be pushed by the movement of the piston to realize equal pressure injection molding, and at the same time, the movement of the piston can also drive the rotating rotating rod to follow the movement, so as to prevent the injection molding material from solidifying into a mass, and at the same time, the injection molding material in the injection molding cylinder can be uniform, and the uneven temperature and pressure during the injection molding process can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a cross-sectional connection schematic diagram of the injection molding cylinder in the present invention;

[0021] Figure 3 It is a schematic diagram of the second injection molded plate in the present invention.

[0022] Reference numerals:

[0023] 1-base, 2-injection cylinder, 3-feeding port, 4-push rod, 5-first cylinder, 6-slide seat, 7-first injection plate, 8-second injection plate, 801-water supply pipe, 9-flange, 10-feeding pipe port, 11-piston, 12-motor, 13-rotating rod, 14-second cylinder, 15-sealed bearing, 16-third cylinder, 17-push block DETAILED DESCRIPTION

[0024] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0025] Reference Figure 1-3A lithium battery cover injection molding device comprises a base 1, a slide 6 is fixed on the base 1, a first injection molding plate 7 is fixed on the slide 6, a second injection molding plate 8 is movably mounted on the slide 6, the second injection molding plate 8 is matched with the first injection molding plate 7, an injection molding cylinder 2 is detachably mounted on the slide 6, the end of the injection molding cylinder 2 is movably connected to the first injection molding plate 7, a piston 11 is movably mounted inside the injection molding cylinder 2, and a rotating rod 13 is rotatably arranged on the piston 11; a water supply pipe 801 is wound around the inside of the second injection molding plate 8 and the first injection molding plate 7.

[0026] In actual use, by setting the slide seat 6, it is convenient to install the first injection molding plate 7 and the second injection molding plate 8, so that it is convenient to realize injection molding and demolding by pushing the second injection molding plate 8 to move; by winding the water supply pipe 801 around the inside of the second injection molding plate 8 and the first injection molding plate 7, it is convenient to carry out water cooling and heat dissipation through the water supply pipe 801, so as to facilitate the subsequent demolding work and reduce the injection molding cycle of the lithium battery cover plate; by setting the injection molding cylinder 2 and setting the piston 11 in the injection molding cylinder 2, the injection molding material can be pushed by the movement of the piston 11 to realize equal pressure injection molding. At the same time, the movement of the piston 11 can also drive the rotating rotating rod 13 to follow the movement, so as to prevent the injection molding material from solidifying into a mass. At the same time, the injection molding material in the injection molding cylinder 2 can be made uniform, and the uneven temperature and pressure during the injection molding process can be prevented, and the practicality is high.

[0027] In this embodiment, a feed nozzle 10 is connected to the side of the first injection molding plate 7, and a flange 9 is installed on the feed nozzle 10. The flange 9 is movably connected to the liquid outlet of the injection molding cylinder 2. A feeding port 3 is opened on the injection molding cylinder 2, and a valve is installed in the feeding port 3. Specifically, by setting the feed nozzle 10, it is convenient for the injection molding material in the injection molding cylinder 2 to enter the first injection molding plate 7 to realize the injection molding work. At the same time, by setting the flange 9, it is convenient to disassemble the injection molding cylinder 2 from the side of the first injection molding plate 7, thereby facilitating the subsequent maintenance work.

[0028] In this embodiment, the first cylinder 5 is detachably mounted on the slide 6, the telescopic end of the first cylinder 5 is connected to the push rod 4, the end of the push rod 4 is connected to the piston 11, the motor 12 is mounted inside the piston 11, the output end of the motor 12 is connected to the rotating rod 13, the end of the piston 11 is embedded with a sealed bearing 15, the inner ring of the sealed bearing 15 is used to connect the rotating rod 13 and the output end of the motor 12, the rotating rod 13 is matched with the liquid outlet of the injection cylinder 2, and the rotating rod 13 is spirally arranged as a whole; specifically, the push rod 4 can be driven to move by starting the first cylinder 5, thereby driving the piston 11 to move, and the injection molding raw material can be pushed forward. During the pushing process, the rotating rod 13 can be driven to rotate by starting the motor 12, thereby mixing the injection molding raw materials, preventing the temperature of the injection molding raw materials from being uneven, and preventing the injection molding discharged materials from solidifying into a mass; by matching the rotating rod 13 with the liquid outlet of the injection molding cylinder 2, the rotating rod 13 can be extended into the liquid outlet of the injection molding cylinder 2 when the piston 11 is about to be pushed.

[0029] In this embodiment, a second cylinder 14 is fixed on the slide 6, and the output end of the second cylinder 14 is connected to the second injection molding plate 8, and the bottom of the second injection molding plate 8 is slidably set on the slide 6; specifically, the second injection molding plate 8 can be driven to move by starting the second cylinder 14, so as to facilitate injection molding or demolding work according to needs.

[0030] In this embodiment, the water supply pipe 801 is arranged in a straight wave line shape inside the first injection molding plate 7 and the second injection molding plate 8, and the two ends of the water supply pipe 801 are respectively connected to a water supply port and a drain port. A third cylinder 16 is fixed to the side of the second injection molding plate 8, and the output end of the third cylinder 16 passes through the second injection molding plate 8 and is connected to a push block 17, and the push block 17 is movably fitted to the second injection molding plate 8; specifically, the setting of the water supply pipe 801 can facilitate the cooling of the inside of the first injection molding plate 7 and the second injection molding plate 8, thereby facilitating the injection molding efficiency and facilitating the subsequent demolding work.

[0031] The present invention also includes a lithium battery cover plate injection molding method, the injection molding method comprising the following steps:

[0032] S1, prepare materials: inject the raw materials for injection molding into the injection molding cylinder 2 through the feeding port 3;

[0033] S2, injection molding: control the first cylinder 5 to start, drive the push rod 4 to move in the injection cylinder 2, drive the piston 11 to move, push the raw material for injection molding, and realize the injection molding work;

[0034] S3, demolding: inject circulating clean water into the water supply pipe 801 so that the water supply pipe 801 can dissipate heat for the injection-molded lithium battery cover plate, control the second cylinder 14 to drive the second injection molding plate 8 to move, and synchronously control the third cylinder 16 to drive the push block 17 to move, thereby achieving demolding.

[0035] In this embodiment, in S2, before the injection molding work is performed, the piston 11 is pushed to the rightmost end, and the injected injection molding material is pushed by the piston 11, and the motor 12 is synchronously controlled to drive the rotating rod 13 to prevent the injection molding material from accumulating and solidifying.

[0036] Working principle: the staff injects the injection molding raw material into the injection molding cylinder 2 through the feeding port 3, and by starting the first cylinder 5, drives the push rod 4 to move, thereby driving the piston 11 to move, and pushing the injection molding raw material in the injection molding cylinder 2, so that the injection molding work can be realized through the liquid outlet and the feed outlet 10 of the injection molding cylinder 2. After the injection molding work is completed, the circulating clean water is received through the water supply pipe 801 to cool the lithium battery cover plate injection molded in the first injection molding plate 7 and the second injection molding plate 8, so as to facilitate the subsequent rapid demolding. After the cooling is completed, the third cylinder 16 is controlled to drive the push block 17 to move, so as to facilitate the ejection of the injection molded lithium battery cover plate to realize the demolding work.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A lithium battery cover plate injection molding device, comprising a base (1), a slide seat (6) being fixed on the base (1), characterized in that: A first injection molding plate (7) is fixed on the slide seat (6), a second injection molding plate (8) is movably mounted on the slide seat (6), the second injection molding plate (8) is matched with the first injection molding plate (7), an injection molding cylinder (2) is detachably mounted on the slide seat (6), the end of the injection molding cylinder (2) is movably connected to the first injection molding plate (7), a piston (11) is movably mounted inside the injection molding cylinder (2), a rotating rod (13) is rotatably mounted on the piston (11); a water supply pipe (801) is wound around the inside of the second injection molding plate (8) and the first injection molding plate (7).

2. A lithium battery cover injection molding device according to claim 1, characterized in that: The side of the first injection molding plate (7) is connected to a feed pipe opening (10), a flange (9) is installed on the feed pipe opening (10), the flange (9) is movably connected to the liquid outlet pipe opening of the injection molding cylinder (2), and the injection molding cylinder (2) is provided with a feed port (3), and a valve is installed in the feed port (3).

3. A lithium battery cover injection molding device according to claim 2, characterized in that: A first cylinder (5) is detachably mounted on the slide seat (6); a push rod (4) is connected to the telescopic end of the first cylinder (5); the end of the push rod (4) is connected to the piston (11); a motor (12) is mounted inside the piston (11); the output end of the motor (12) is connected to the rotating rod (13); a sealed bearing (15) is embedded in the end of the piston (11); the inner ring of the sealed bearing (15) is used to connect the rotating rod (13) and the output end of the motor (12); the rotating rod (13) is matched with the liquid outlet of the injection molding cylinder (2); and the rotating rod (13) is arranged in a spiral shape as a whole.

4. A lithium battery cover injection molding device according to claim 1, characterized in that: A second cylinder (14) is fixed on the slide seat (6), an output end of the second cylinder (14) is connected to a second injection molding plate (8), and the bottom of the second injection molding plate (8) is slidably arranged on the slide seat (6).

5. A lithium battery cover injection molding device according to claim 1, characterized in that: The water supply pipe (801) is arranged in a straight wave line shape inside the first injection molding plate (7) and the second injection molding plate (8), and the two ends of the water supply pipe (801) are respectively connected to a water supply port and a water discharge port. A third cylinder (16) is fixed to the side of the second injection molding plate (8), and the output end of the third cylinder (16) passes through the second injection molding plate (8) and is connected to a push block (17). The push block (17) and the second injection molding plate (8) are movably fitted.

6. A lithium battery cover plate injection molding method, comprising the lithium battery cover plate injection molding device according to any one of claims 1 to 5, characterized in that: The injection molding method comprises the following steps: S1, preparing materials: injecting raw materials for injection molding into the injection molding cylinder (2) through the feeding port (3); S2, performing injection molding: controlling the first cylinder (5) to start, driving the push rod (4) to move in the injection molding cylinder (2), driving the piston (11) to move, pushing the raw material for injection molding, and realizing the injection molding work; S3, demolding: inject circulating clean water into the water supply pipe (801) so that the water supply pipe (801) can dissipate heat for the injection-molded lithium battery cover plate, control the second cylinder (14) to drive the second injection molding plate (8) to move, and synchronously control the third cylinder (16) to drive the push block (17) to move, thereby achieving demolding.

7. A lithium battery cover injection molding method according to claim 6, characterized in that: In S2, before the injection molding operation is performed, the piston (11) is pushed to the rightmost end, and the injected injection molding material is pushed by the piston (11), and the motor (12) is synchronously controlled to drive the rotating rod (13) to prevent the injection molding material from accumulating and solidifying.

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