Thermoplastic elastomer lithium battery sealing ring injection mold

Abstract

The utility model discloses a thermoplastic elastomer lithium electricity sealing ring injection mold, including mould base, the front side of mould base is equipped with connecting block, the front end of connecting block is equipped with movable mould piece no.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery sealing ring production technology, specifically to a thermoplastic elastomer lithium battery sealing ring injection mold. Background Technology

[0002] Lithium-ion battery sealing rings are crucial components in lithium-ion batteries, preventing electrolyte leakage and isolating them from external moisture and contaminants. They directly affect battery performance and safety. The materials used are often fluororubber, silicone, or ceramic, requiring high-temperature resistance and corrosion resistance. Lithium-ion battery sealing rings are primarily manufactured through injection molding. This process requires a lithium-ion battery sealing ring injection mold. Existing injection molds typically consist of two mold plates and an ejector mechanism. The mold plates have internal cooling channels to allow cooling water to flow through, accelerating the molding of the lithium-ion battery sealing ring. The ejector mechanism usually consists of an ejector pin and a drive assembly. During use, one mold plate is connected to the fixed end of the injection molding machine. Together, the mold plate on the other side is connected to the moving end of the injection molding machine. The moving end moves forward, and the two mold plates fit together. The high-temperature molten plastic enters the mold cavity through the injection port on the mold plate to form a lithium battery sealing ring. Cooling water accelerates the molding of the lithium battery sealing ring. Then the moving end moves backward, and the ejector pin ejects the formed lithium battery sealing ring from inside the mold. In traditional lithium battery sealing ring injection molds, the ejector pin is used to eject the formed lithium battery sealing ring. The area at the end of the ejector pin is small, the ejection effect is limited, and it is easy to damage the surface of the lithium battery sealing ring, resulting in poor demolding effect. Therefore, we propose a thermoplastic elastomer lithium battery sealing ring injection mold. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a thermoplastic elastomer lithium battery sealing ring injection mold with a demolding mechanism. The rapid demolding of the lithium battery sealing ring is achieved by the sequential forward movement of the mold core and the mold piece, which improves the demolding effect of the lithium battery sealing ring and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a thermoplastic elastomer lithium battery sealing ring injection mold, including a mold base, a connecting block on the front side of the mold base, a movable mold piece one at the front end of the connecting block, a movable mold piece two at the front end of the mold piece one, and a demolding mechanism. Demolding mechanism: It includes a mold core, limiting grooves, limiting posts, connecting frame and driving assembly. The connecting frame is slidably connected to the rear side of the connecting block. The mold cores are rotatably connected to the four front corners of the connecting frame. The four internal corners of the connecting block are provided with mounting grooves. The middle of the outer surface of the mold core is fitted with the inner wall of the longitudinally adjacent mounting groove. The front side of the outer surface of the mold core is slidably connected to the inner wall of the mold piece one. The limiting grooves are all opened at the four corners of the outer surface of the mold core. The limiting posts are all set at the four corners of the inner wall of the mounting groove. The outer surface of the limiting posts is slidably connected to the inner wall of the longitudinally adjacent limiting groove, providing a basis for the deflection of the mold core. The driving assembly is set at the front side of the mold base and is provided with a demolding mechanism. The rapid demolding of the lithium battery sealing ring is achieved by the sequential forward movement of the mold core and the mold piece one, which improves the demolding effect of the lithium battery sealing ring.

[0005] Furthermore, the drive assembly includes a rotating shaft, a spring, and a cam. The rotating shaft is rotatably connected to the middle of the inner front side of the mold base. A spring is provided between the middle of the rear end of the connecting block and the middle of the front side of the connecting frame. The spring is sleeved on the middle of the front side of the outer surface of the connecting frame. The cam is fixedly sleeved on the middle of the outer surface of the rotating shaft. The outer surface of the cam fits against the middle of the rear side of the connecting frame, providing a basis for the back-and-forth movement of the mold core.

[0006] Furthermore, the drive assembly also includes a sliding column, a second spring, a connecting piece, and a second cam. The sliding column is slidably connected to the four corners of the inner edge of the connecting block. The front end of each sliding column is fixedly connected to the rear end of the first mold piece. The rear end of each sliding column is threaded with a limit head. A second spring is provided between the rear end of the connecting block and the front end of the limit head. The second spring is sleeved on the rear side of the outer surface of the sliding column. The connecting pieces are respectively located at the upper and lower ends of the middle of the rear side of the connecting block. The second cam is respectively sleeved on the upper and lower ends of the outer surface of the rotating shaft. The rear end of each connecting piece is in contact with the outer surface of the longitudinally adjacent second cam, providing a basis for the forward and backward movement of the first mold piece.

[0007] Furthermore, the demolding mechanism also includes a motor, which is located at the upper front middle of the mold base. The input end of the motor is electrically connected to the output end of an external controller, and the lower end of the motor's output shaft is fixedly connected to the upper end of the rotating shaft, providing a driving effect for the demolding of the lithium battery sealing ring.

[0008] Furthermore, it also includes positioning holes and positioning posts. The positioning holes are respectively opened at the four front corners of the inner side of the first mold piece, and the positioning posts are respectively set at the four rear corners of the second mold piece. The outer surface of the positioning posts is inserted into the inner wall of the longitudinally adjacent positioning holes, providing positioning and limiting effects for the fitting of the first mold piece and the second mold piece.

[0009] Furthermore, the second mold plate has an injection hole in the middle to facilitate the entry of high-temperature molten plastic.

[0010] Furthermore, both the left and right sides of the upper end of the connecting block are threaded with lifting rings to facilitate the hoisting and movement of the mold.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This thermoplastic elastomer lithium battery sealing ring injection mold has the following advantages: The three components—mold plate one, mold plate two, and mold core—form a complete mold cavity for the injection molding of lithium battery sealing rings. During demolding, the mold core makes full contact with the surface of the lithium battery sealing ring without damaging it. The mold core is limited by the limiting pillars and limiting grooves, and it also deflects as it is ejected forward. When the mold core retracts, mold plate one is ejected forward simultaneously. Combined with the secondary ejection of the mold core, there are three actions that can act on the surface of the lithium battery sealing ring in one demolding process, which greatly avoids the situation where the lithium battery sealing ring is not demolded and improves the demolding effect of the lithium battery sealing ring. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the demolding mechanism of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the mold core of this utility model; Figure 4 This is a schematic diagram of the connecting frame of this utility model; Figure 5 This is a schematic diagram of the structure of the first module of this utility model.

[0013] In the diagram: 1 Mold base, 2 Connecting block, 3 Mold piece one, 4 Mold piece two, 5 Demolding mechanism, 51 Mold core, 52 Limiting groove, 53 Limiting post, 54 Connecting frame, 55 Drive assembly, 551 Rotating shaft, 552 Spring one, 553 Cam one, 554 Sliding column, 555 Spring two, 556 Connecting piece, 557 Cam two, 56 Motor, 6 Positioning hole, 7 Positioning post, 8 Injection hole, 9 Lifting ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5This embodiment provides a technical solution: a thermoplastic elastomer lithium battery sealing ring injection mold, including a mold base 1, a connecting block 2 on the front side of the mold base 1, a movable mold piece 3 at the front end of the connecting block 2, a groove 1 at the front end of the mold piece 3, a movable mold piece 2 4 at the front end of the mold piece 3, a groove 3 at the rear end of the mold piece 2 4, cooling channels in the inner walls of both the mold piece 3 and the mold piece 2 4, and connectors at both the upper and lower ends of both the mold piece 3 and the mold piece 2 4, which are connected to the cooling channels. An external circulating water system can be connected to the connectors through connecting pipes. The mold also includes a demolding mechanism 5. Demolding mechanism 5: It includes mold core 51, limiting groove 52, limiting post 53, connecting frame 54 and driving assembly 55. The connecting frame 54 is slidably connected to the rear side of the connecting block 2. The mold core 51 is rotatably connected to the four front corners of the connecting frame 54. The four internal corners of the connecting block 2 are provided with mounting grooves. The middle part of the outer surface of the mold core 51 is fitted with the inner wall of the longitudinally adjacent mounting groove. The mold core 51 can slide back and forth and deflect left and right inside the mounting groove. The front side of the outer surface of the mold core 51 is slidably connected to the inner wall of the mold piece 3. A second groove is provided at the edge. The first groove, the second groove, and the third groove form a complete mold cavity. The limiting grooves 52 are all opened at the four corners of the outer surface of the mold core 51. The limiting posts 53 are all set at the four corners of the inner wall of the mounting groove. The outer surface of the limiting posts 53 is slidably connected to the inner wall of the longitudinally adjacent limiting grooves 52, providing a basis for the deflection of the mold core 51. The driving component 55 is set on the front side inside the mold base 1 and is equipped with a demolding mechanism 5. The rapid demolding of the lithium battery sealing ring is achieved by the sequential forward movement of the mold core 51 and the mold piece 3, which improves the demolding effect of the lithium battery sealing ring. The drive assembly 55 includes a rotating shaft 551, a first spring 552, and a first cam 553. The rotating shaft 551 is rotatably connected to the middle of the front side inside the mold base 1. The first spring 552 is located between the middle of the rear end of the connecting block 2 and the middle of the front side of the connecting frame 54. The first spring 552 is sleeved on the middle of the front side of the outer surface of the connecting frame 54. The first spring 552 can be replaced by disassembling and assembling the connecting frame 54. The first cam 553 is fixedly sleeved on the middle of the outer surface of the rotating shaft 551. The outer surface of the first cam 553 is in contact with the middle of the rear side of the connecting frame 54. There are protrusions on both the left and right sides of the outer surface of the first cam 553 to provide a basis for the back-and-forth movement of the mold core 51. The drive assembly 55 also includes a sliding column 554, a second spring 555, a connecting piece 556, and a second cam 557. The columns 554 are slidably connected to the four corners of the inner edge of the connecting block 2. The front end of each column 554 is fixedly connected to the rear end of the first mold piece 3. The rear end of each column 554 is threaded with a limit head. A second spring 555 is provided between the rear end of the connecting block 2 and the front end of the limit head. The second spring 555 is sleeved on the rear side of the outer surface of the column 554. The second spring 555 can be replaced by disassembling and assembling the limit head. The connecting pieces 556 are respectively set at the upper and lower ends of the middle of the rear side of the connecting block 2. The second cam 557 is respectively sleeved on the upper and lower ends of the outer surface of the rotating shaft 551. The rear end of each connecting piece 556 is in contact with the outer surface of the longitudinally adjacent second cam 557. The rear side of the outer surface of the second cam 557 is provided with a second protrusion, which provides a basis for the back and forth movement of the first mold piece 3. The demolding mechanism 5 also includes a motor 56, which is located at the middle of the front side of the upper end of the mold base 1. The input end of the motor 56 is electrically connected to the output end of an external controller, and the lower end of the output shaft of the motor 56 is fixedly connected to the upper end of the rotating shaft 551 to provide a driving effect for the demolding of the lithium battery sealing ring. It also includes positioning holes 6 and positioning posts 7. The positioning holes 6 are respectively opened at the four front corners of the inner side of the first mold 3, and the positioning posts 7 are respectively set at the four rear corners of the second mold 4. The outer surface of the positioning posts 7 is inserted into the inner wall of the longitudinally adjacent positioning holes 6, providing positioning and limiting effects for the fitting of the first mold 3 and the second mold 4. The mold plate 2 4 has an injection hole 8 in the middle to facilitate the entry of high-temperature molten plastic; Both the left and right sides of the upper end of the connecting block 2 are threaded with lifting rings 9, which facilitates the hoisting and movement of the mold.

[0016] The working principle of the thermoplastic elastomer lithium battery sealing ring injection mold provided by this utility model is as follows: When using the lithium battery sealing ring injection mold, the second mold piece 4 is connected to the fixed end of the external injection molding machine. The external hoisting equipment lifts the connecting block 2, the first mold piece 3, and the mold base 1 through the lifting ring 9 and moves them to a suitable position. Then, the mold base 1 is fixedly connected to the moving end of the external injection molding machine. Then, the external circulating water system is connected to the connector, so that the circulating water can circulate inside the cooling channel, completing the installation of the lithium battery sealing ring injection mold. The moving end of the external injection molding machine moves forward, so that the front end of the first mold piece 3 fits with the rear end of the second mold piece 4. During this process, the positioning pin 7 on the rear side of the second mold piece 4 is inserted into the positioning hole 6 on the front side of the first mold piece 3, which provides a fit between the first mold piece 3 and the second mold piece 4. For positioning and limiting effects, at this time, the groove one on the front side of mold piece 3, the groove two on the front edge of mold core 51, and the groove three on the rear side of mold piece 4 form a complete mold cavity. The injection port of the external injection molding machine is inserted into the injection hole 8, and the high-temperature molten material enters the interior of the mold cavity to form a lithium battery sealing ring. Circulating water continuously cools and accelerates the molding of the lithium battery sealing ring. Then, the moving end of the external injection molding machine moves backward, and mold piece 3 separates from mold piece 4. Since the volume of the mold cavity formed by groove one and groove two is much larger than the volume of the mold cavity at groove one, the lithium battery sealing ring will adhere to the front side of mold piece 3 after mold piece 3 separates from mold piece 4. The external controller controls the motor 56 to operate, and the output shaft of the motor 56 rotates clockwise, driving the rotating shaft 551 to rotate. Cam 553 follows. As the cam 553 rotates, the protrusion on the left side of the cam 553 presses against the rear end of the connecting frame 54, causing the connecting frame 54 to move forward under force. The mold core 51 moves forward, pushing the lithium battery sealing ring out of the mold cavity. The spring 552 is compressed. At this time, as the mold core 51 moves forward, the limiting post 53 presses against the corresponding limiting groove 52. Since the limiting grooves 52 are all tilted to the right with the rear end as the center, the mold core 51 will also deflect to the right while moving forward, causing the lithium battery sealing ring to be pushed out of the mold cavity and detach. If the lithium battery sealing ring does not detach successfully, when the protrusion on the left side of the cam 553 completely passes the rear end of the connecting frame 54, the spring 552 expands backward without force, and the connecting frame 54 moves backward, causing the mold core 51 to move backward. Limited by the limiting post 53 and the limiting groove 52, the mold core 51 moves backward while also... It will deflect to the left. At the same time, as the rotating shaft 551 rotates, the second protrusion on the surface of the second cam 557 contacts and presses the rear end of the corresponding connecting piece 556. The first mold piece 3 moves forward, and the second spring 555 is compressed. At this time, the mold core 51 moves backward with the lithium battery sealing ring while the first mold piece 3 moves forward. The first mold piece 3 will generate a forward thrust on the lithium battery sealing ring, causing the lithium battery sealing ring to fall out of the mold cavity. As the rotating shaft 551 continues to rotate, the second protrusion on the surface of the second cam 557 passes the rear end of the connecting piece 556. The second spring 555 expands backward without force, driving the first mold piece 3 back to its original position. When the second protrusion on the surface of the second cam 557 passes the rear end of the connecting piece 556, in the initial state, the first protrusion on the right side of the first cam 553 rotates to the rear end of the connecting bracket 54.The rear end of the connecting frame 54 is pressed forward, and the mold core 51 slides forward and rotates again. This prevents the lithium battery sealing ring from failing to detach. A total of three actions are performed on the surface of the lithium battery sealing ring during the entire process, greatly reducing the chance of failure to detach. When the protrusion on the right side of cam 1 553 passes the rear end of the connecting frame 54, the rotating shaft 551 rotates 360 degrees, and cam 1 553 and cam 2 557 return to their initial positions. Mold piece 1 3 and mold core 51 also return to their initial state, awaiting the next cycle.

[0017] It is worth noting that the motor 56 disclosed in the above embodiments is a UIM57 motor, and the external controller controls the operation of the motor 56 using methods commonly used in the prior art.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A thermoplastic elastomer lithium battery sealing ring injection mold, comprising a mold base (1), wherein a connecting block (2) is provided on the front side of the mold base (1), a movable mold piece one (3) is provided at the front end of the connecting block (2), and a movable mold piece two (4) is provided at the front end of the mold piece one (3), characterized in that: It also includes a demolding mechanism (5); Demolding mechanism (5): It includes mold core (51), limiting groove (52), limiting post (53), connecting frame (54) and driving assembly (55). The connecting frame (54) is slidably connected to the inner rear side of the connecting block (2). The mold core (51) is rotatably connected to the four front corners of the connecting frame (54). The four inner corners of the connecting block (2) are provided with mounting grooves. The middle part of the outer surface of the mold core (51) is fitted with the inner wall of the longitudinally adjacent mounting groove. The front side of the outer surface of the mold core (51) is slidably connected to the inner wall of the mold piece (3). The limiting groove (52) is opened at the four corners of the outer surface of the mold core (51). The limiting post (53) is set at the four corners of the inner wall of the mounting groove. The outer surface of the limiting post (53) is slidably connected to the inner wall of the longitudinally adjacent limiting groove (52). The driving assembly (55) is set at the inner front side of the mold base (1).

2. The injection mold for a thermoplastic elastomer lithium battery sealing ring according to claim 1, characterized in that: The drive assembly (55) includes a rotating shaft (551), a spring (552), and a cam (553). The rotating shaft (551) is rotatably connected to the middle of the front side inside the mold base (1). The middle of the rear end of the connecting block (2) is provided with a spring (552) between the middle of the rear end of the connecting block (2) and the middle of the front side of the connecting frame (54). The spring (552) is sleeved on the middle of the front side of the outer surface of the connecting frame (54). The cam (553) is fixedly sleeved on the middle of the outer surface of the rotating shaft (551). The outer surface of the cam (553) is in contact with the middle of the rear side of the connecting frame (54).

3. The injection mold for a thermoplastic elastomer lithium battery sealing ring according to claim 2, characterized in that: The drive assembly (55) further includes a slide column (554), a second spring (555), a connecting piece (556), and a second cam (557). The slide column (554) is slidably connected to the four corners of the inner edge of the connecting block (2). The front end of the slide column (554) is fixedly connected to the rear end of the first module (3). The rear end of the outer surface of the slide column (554) is threaded with a limit head. The rear end of the connecting block (2) and the front end of the limit head are both provided with a second spring (555). The second spring (555) is sleeved on the rear side of the outer surface of the slide column (554). The connecting piece (556) is respectively set at the upper and lower ends of the middle of the rear side of the connecting block (2). The second cam (557) is respectively sleeved on the upper and lower ends of the outer surface of the rotating shaft (551). The rear end of the connecting piece (556) is in contact with the outer surface of the longitudinally adjacent second cam (557).

4. The injection mold for a thermoplastic elastomer lithium battery sealing ring according to claim 2, characterized in that: The demolding mechanism (5) also includes a motor (56), which is located at the middle of the front side of the upper end of the mold base (1). The input end of the motor (56) is electrically connected to the output end of an external controller, and the lower end of the output shaft of the motor (56) is fixedly connected to the upper end of the rotating shaft (551).

5. The injection mold for a thermoplastic elastomer lithium battery sealing ring according to claim 1, characterized in that: It also includes positioning holes (6) and positioning posts (7). The positioning holes (6) are respectively opened at the four front corners of the inner side of the first module (3), and the positioning posts (7) are respectively set at the four rear corners of the second module (4). The outer surface of the positioning posts (7) is inserted into the inner wall of the longitudinally adjacent positioning holes (6).

6. The injection mold for a thermoplastic elastomer lithium battery sealing ring according to claim 1, characterized in that: The mold plate 2 (4) has an injection hole (8) in the middle.

7. The injection mold for a thermoplastic elastomer lithium battery sealing ring according to claim 1, characterized in that: The upper left and right sides of the connecting block (2) are threaded with lifting rings (9).

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