Lithium battery diaphragm extension device

Abstract

The utility model belongs to the technical field of lithium battery diaphragm processing, and discloses a lithium battery diaphragm extension device. Comprising a machining table, supporting columns are fixedly connected to the bottom of the machining table, sliding plates are slidably connected to the top end of the machining table, and a first motor is fixedly connected to one side of each sliding plate. Then, a second motor can be started to drive a first two-way lead screw to rotate, and two groups of symmetrical moving plates on the outer wall of the first two-way lead screw are driven to move in opposite directions until the distance between two groups of first limiting plates and second limiting plates is consistent with the set width; the space between the two sets of stretching rollers is limited, the first limiting plate and the second limiting plate can prevent the lithium battery diaphragm from deviating towards the two sides when the lithium battery diaphragm is stretched, and the problem that the two sides of the lithium battery diaphragm are prone to deviating when the lithium battery diaphragm is stretched is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery diaphragm processing, and more specifically, to a lithium battery diaphragm extending device. Background Art

[0002] The lithium battery separator is one of the key inner components of the lithium battery. It is located between the positive and negative electrodes. Its main function is to prevent the two electrodes from contacting and short-circuiting, and to allow electrolyte ions to pass through to form a charge and discharge circuit. The lithium battery separator material generally adopts a high-strength thin-film polyolefin porous membrane, which can have sufficient mechanical properties, chemical stability and thermal stability to meet the working requirements of lithium batteries. When the lithium battery separator is processed, an extension device is required to stretch the lithium battery separator to an appropriate length.

[0003] A lithium battery diaphragm stretching device is a device used to stretch lithium battery diaphragms. Its main purpose is to stretch the diaphragm during the lithium battery manufacturing process to increase its size and area to meet the needs of battery manufacturing. The lithium battery diaphragm stretching device will include a processing table, a feeding unit and a length stretching mechanism. When working, the feeding unit is responsible for feeding the lithium battery diaphragm into the device, and the length stretching mechanism is responsible for stretching the length of the diaphragm until the lithium battery diaphragm is stretched to an appropriate length.

[0004] In the prior art, when the length of a lithium battery separator needs to be stretched separately, since there is no corresponding limiting structure on both sides of the stretching device, when the length of the lithium battery separator is stretched, the lithium battery separator is easily irregularly offset to both sides, thereby easily causing the two sides of the lithium battery separator to deform due to the offset during stretching. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model proposes a lithium battery diaphragm extension device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery diaphragm stretching device, comprising a processing table, the bottom of the processing table is fixedly connected to a pillar, the top of the processing table is slidably connected to a slide, one side of the slide is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a stretching roller, the stretching roller is rotatably arranged on the inner wall of the slide, the slide, the stretching roller and the first motor are each provided in two groups and are distributed in parallel at the top of the processing table, the top of the processing table is provided with an adjustment component for adjusting the position of the two groups of slides, one group of the slides A side plate is fixedly connected to one side of the side plate, a second motor is fixedly connected to one side of the side plate, a first bidirectional screw is fixedly connected to the output end of the second motor, a movable plate is slidably connected to the outer wall of the first bidirectional screw, a first limit plate is fixedly connected to one side of the movable plate, the first limit plate is slidably set on the outer wall of a group of stretching rollers, the inner wall of the first limit plate is slidably connected to the second limit plate, the second limit plate is slidably connected to the outer wall of another group of stretching rollers, the movable plate, the first limit plate and the second limit plate are each provided in two groups, and are symmetrically distributed on the outer wall of the first bidirectional screw.

[0007] Furthermore, the adjustment component includes a third motor, the third motor is fixedly connected to one side of the processing table, a slide groove is provided at the top of the processing table, the output end of the third motor is fixedly connected to a second bidirectional screw rod, the second bidirectional screw rod is rotatably arranged on the inner wall of the slide groove, a slider is fixedly connected to the bottom of the slide plate, and the inner wall of the slider is slidably connected to the outer wall of the second bidirectional screw rod.

[0008] Furthermore, the inner wall of the first limiting plate is rotatably connected to a round rod, the outer wall of the round rod is fixedly connected to a spiral spring sheet, one side of the spiral spring sheet is fixedly connected to an isolation belt, and one side of the isolation belt is fixedly connected to one side of the second limiting plate.

[0009] Furthermore, the bottom of the slider is slidably connected to a pulley, and the bottom of the slider is slidably connected to the inner wall of the slide groove through the pulley.

[0010] Furthermore, a gasket is fixedly connected to the bottom of the pillar, the material of the gasket is rubber, and four groups of the gaskets are arranged and symmetrically distributed at the bottom of the four groups of pillars.

[0011] The technical effects and advantages of the lithium battery diaphragm extension device of the utility model are as follows:

[0012] (1) The position between the two groups of slide plates, the stretching rollers and the first motor is adjusted by an adjustment device, so that the two groups of stretching rollers can be easily adjusted according to the length of the lithium battery diaphragm. Then, the second motor can be started to drive the first bidirectional screw to rotate, which can drive the two groups of movable plates symmetrically arranged on its outer wall to move in opposite directions until the distance between the two groups of first limit plates is consistent with the set width. When the first limit plate moves, the second limit plate will also slide on the other group of stretching rollers with the first limit plate, so that the space between the two groups of stretching rollers is limited. When the lithium battery diaphragm is stretched, the two groups of first motors can be started to rotate the two groups of stretching rollers outward, so that the length of the lithium battery diaphragm can be stretched. The first limit plate and the second limit plate can limit the two sides of the lithium battery diaphragm to prevent the lithium battery diaphragm from shifting to the two sides when the length is stretched, thereby solving the problem that the two sides of the lithium battery diaphragm are easily offset when the length is stretched.

[0013] (2) By starting the third motor, the second bidirectional screw can be driven to rotate, and the second bidirectional screw drives the two groups of sliders arranged on its outer wall to move in opposite directions. Since the slider is arranged at the bottom of the slide, when the slider moves, it can drive the slide, stretching roller and the first motor arranged on the top to move together, so that the distance between the two groups of slides, stretching roller and the first motor can be adjusted. When the slider slides inside the slide groove, the moving trajectory of the slide can be limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0016] Figure 3 for Figure 2 A is an enlarged structural diagram of FIG.

[0017] Figure 4 It is a structural schematic diagram of the first limiting plate in the utility model.

[0018] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the first limiting plate in the utility model.

[0019] In the figure:

[0020] 1. Processing table; 2. Support column; 3. Slide plate; 4. First motor; 5. Stretch roller; 6. Side plate; 7. Second motor; 8. First bidirectional screw rod; 9. Moving plate; 10. First limit plate; 11. Second limit plate; 12. Round rod; 13. Isolation belt; 14. Third motor; 15. Second bidirectional screw rod; 16. Slider; 17. Slide groove; 18. Pulley; 19. Gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] Reference Figure 1-5 A lithium battery diaphragm stretching device comprises a processing table 1, a support 2 is fixedly connected to the bottom of the processing table 1, a slide plate 3 is slidably connected to the top of the processing table 1, a first motor 4 is fixedly connected to one side of the slide plate 3, a stretching roller 5 is fixedly connected to the output end of the first motor 4, and the stretching roller 5 is rotatably arranged on the inner wall of the slide plate 3, the slide plate 3, the stretching roller 5 and the first motor 4 are each provided with two groups and are parallelly distributed at the top of the processing table 1, and an adjustment component for adjusting the positions of the two groups of slide plates 3 is provided at the top of the processing table 1, one side of the slide plate 3 is fixedly connected to a side plate 6, and the side plate 6 A second motor 7 is fixedly connected to one side of the machine, a first bidirectional screw 8 is fixedly connected to the output end of the second motor 7, a movable plate 9 is slidably connected to the outer wall of the first bidirectional screw 8, a first limit plate 10 is fixedly connected to one side of the movable plate 9, the first limit plate 10 is slidably set on the outer wall of a group of stretching rollers 5, the inner wall of the first limit plate 10 is slidably connected to the second limit plate 11, the second limit plate 11 is slidably connected to the outer wall of another group of stretching rollers 5, the movable plate 9, the first limit plate 10 and the second limit plate 11 are each provided in two groups, and are symmetrically distributed on the outer wall of the first bidirectional screw 8.

[0024] In order to solve the problem that the two sides of the lithium battery diaphragm are easily offset when the length of the lithium battery diaphragm is stretched, when the length of the lithium battery diaphragm needs to be stretched, the two ends of the lithium battery diaphragm can be fixed on two groups of stretching rollers 5 respectively, and the positions between the two groups of slide plates 3, the stretching rollers 5 and the first motor 4 can be adjusted by an adjustment device, so that the two groups of stretching rollers 5 can be easily adjusted according to the length of the lithium battery diaphragm. Then, the second motor 7 can be started to drive the first bidirectional screw rod 8 to rotate. When the first bidirectional screw rod 8 rotates, it will drive the two groups of moving plates 9 symmetrical on its outer wall to move in opposite directions. When the two groups of moving plates 9 move, they will drive the two groups of first limit The plate 10 slides on the outer wall of a group of stretching rollers 5 until the distance between the two groups of first limit plates 10 is consistent with the set width, and when the first limit plate 10 moves, the second limit plate 11 will also slide on the other group of stretching rollers 5 with the first limit plate 10, so that the space between the two groups of stretching rollers 5 is limited, and when the lithium battery diaphragm is stretched, the two groups of first motors 4 can be started to rotate the two groups of stretching rollers 5 outward, so as to stretch the length of the lithium battery diaphragm, and the first limit plate 10 and the second limit plate 11 can limit the two sides of the lithium battery diaphragm to prevent the lithium battery diaphragm from shifting to both sides when the length is stretched.

[0025] Reference Figure 1-3 The adjustment component includes a third motor 14, which is fixedly connected to one side of the processing table 1. A slide groove 17 is provided at the top of the processing table 1. A second bidirectional screw rod 15 is fixedly connected to the output end of the third motor 14. The second bidirectional screw rod 15 is rotatably arranged on the inner wall of the slide groove 17. A slider 16 is fixedly connected to the bottom of the slide plate 3. The inner wall of the slider 16 is slidably connected to the outer wall of the second bidirectional screw rod 15.

[0026] When it is necessary to adjust the distance between the two groups of skateboards 3, the stretching roller 5 and the first motor 4, the third motor 14 can be started, and the second bidirectional screw rod 15 on one side can be driven to rotate by the third motor 14. When the second bidirectional screw rod 15 rotates, the two groups of sliders 16 arranged on its outer wall can be driven to move in opposite directions. Since the slider 16 is arranged at the bottom of the skateboard 3, when the slider 16 moves, the skateboard 3, the stretching roller 5 and the first motor 4 arranged on the top can be driven to move together, so that the distance between the two groups of skateboards 3, the stretching roller 5 and the first motor 4 can be adjusted. When the slider 16 slides inside the slide groove 17, the moving trajectory of the skateboard 3 can be limited.

[0027] Reference Figure 5 The inner wall of the first limiting plate 10 is rotatably connected to a round rod 12, the outer wall of the round rod 12 is fixedly connected to a spiral spring sheet, one side of the spiral spring sheet is fixedly connected to an isolation belt 13, and one side of the isolation belt 13 is fixedly connected to one side of the second limiting plate 11.

[0028] When the second limiting plate 11 moves to one side, it will pull the isolation belt 13, and when the isolation belt 13 moves to one side, it will generate tension on the spiral spring piece. By setting the isolation belt 13 on one side of the second limiting plate 11, the gap between the second limiting plate 11 and the first limiting plate 10 can be filled, so that the two sides of the lithium battery diaphragm remain limited, and when the second limiting plate 11 moves toward the inner wall of the first limiting plate 10, the spiral spring piece will shrink, thereby wrapping the isolation belt 13 around the outer wall of the round rod 12.

[0029] Reference Figure 3 The bottom of the slider 16 is slidably connected to a pulley 18 , and the bottom of the slider 16 is slidably connected to the inner wall of the slide groove 17 through the pulley 18 .

[0030] By arranging the pulley 18 at the bottom of the slider 16 , when the slider 16 slides, two sets of pulleys 18 can provide smooth contact between the slider 16 and the slide groove 17 , thereby facilitating the sliding of the slider 16 .

[0031] Reference Figure 1 A gasket 19 is fixedly connected to the bottom of the pillar 2 . The gasket 19 is made of rubber. Four groups of gaskets 19 are arranged and are symmetrically distributed at the bottom of the four groups of pillars 2 .

[0032] By arranging a rubber gasket 19 at the bottom of the pillar 2, the gasket 19 can be used to provide stable support for the bottom of the pillar 2 when the lithium battery diaphragm is stretched.

[0033] Working principle: In order to solve the problem that the two sides of the lithium battery diaphragm are easily offset when the length of the lithium battery diaphragm needs to be stretched, when the length of the lithium battery diaphragm needs to be stretched, the two ends of the lithium battery diaphragm can be fixed on the two sets of stretching rollers 5 respectively. When it is necessary to adjust the distance between the two sets of slide plates 3, the stretching rollers 5 and the first motor 4, the third motor 14 can be started, and the second bidirectional screw rod 15 on one side can be driven to rotate by the third motor 14. When the second bidirectional screw rod 15 rotates, it can drive the two sets of sliders 16 set on its outer wall to move in opposite directions. When the slider 16 slides, two sets of pulleys 18 are used to provide smooth contact between the slider 16 and the slide groove 17, so that The slider 16 is convenient for sliding. Since the slider 16 is arranged at the bottom of the slider 3, when the slider 16 moves, the slider 3, the stretching roller 5 and the first motor 4 arranged at the top can be driven to move together, so that the distance between the two groups of sliders 3, the stretching roller 5 and the first motor 4 can be adjusted. When the slider 16 slides inside the slide groove 17, the moving track of the slider 3 can be limited, so that the two groups of stretching rollers 5 can be easily adjusted according to the length of the lithium battery diaphragm. Then the second motor 7 can be started to drive the first bidirectional screw 8 to rotate. When the first bidirectional screw 8 rotates, it will drive the two groups of moving plates 9 symmetrical on its outer wall to move in opposite directions. When the two groups of movable plates 9 move, the two groups of first limiting plates 10 will be driven to slide on the outer wall of one group of stretching rollers 5 until the distance between the two groups of first limiting plates 10 is consistent with the set width, and when the first limiting plate 10 moves, the second limiting plate 11 will also slide on the other group of stretching rollers 5 with the first limiting plate 10, so that the space between the two groups of stretching rollers 5 is limited, and when the second limiting plate 11 moves to one side, it will pull the isolation belt 13, and when the isolation belt 13 moves to one side, it will generate tension on the spiral spring sheet, and by arranging the isolation belt 13 on one side of the second limiting plate 11, the second limiting plate 11 can be The gap between the second limiting plate 11 and the first limiting plate 10 is filled to keep the two sides of the lithium battery diaphragm limited, and when the second limiting plate 11 moves toward the inner wall of the first limiting plate 10, the spiral spring piece will shrink, so that the isolation belt 13 is wrapped around the outer wall of the round rod 12, which is convenient for the storage of the isolation belt 13. When the lithium battery diaphragm is stretched, the two groups of first motors 4 can be started to rotate the two groups of stretching rollers 5 outward, so as to stretch the length of the lithium battery diaphragm. The first limiting plate 10 and the second limiting plate 11 can limit the two sides of the lithium battery diaphragm to prevent the lithium battery diaphragm from shifting to both sides when the length is stretched.

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A lithium battery diaphragm extension device, characterized in that: The invention comprises a processing table (1), the bottom of the processing table (1) is fixedly connected to a support (2), the top of the processing table (1) is slidably connected to a slide plate (3), one side of the slide plate (3) is fixedly connected to a first motor (4), the output end of the first motor (4) is fixedly connected to a stretching roller (5), the stretching roller (5) is rotatably arranged on the inner wall of the slide plate (3), the slide plate (3), the stretching roller (5) and the first motor (4) are each arranged in two groups and are distributed in parallel at the top of the processing table (1), the top of the processing table (1) is provided with an adjustment component for adjusting the position of the two groups of slide plates (3), one side of one group of the slide plates (3) is fixedly connected to a side plate (6), one side of the side plate (6) A second motor (7) is fixedly connected, and the output end of the second motor (7) is fixedly connected to a first bidirectional screw (8); the outer wall of the first bidirectional screw (8) is slidably connected to a movable plate (9); one side of the movable plate (9) is fixedly connected to a first limit plate (10); the first limit plate (10) is slidably arranged on the outer wall of a group of stretching rollers (5); the inner wall of the first limit plate (10) is slidably connected to a second limit plate (11); the second limit plate (11) is slidably connected to the outer wall of another group of stretching rollers (5); the movable plate (9), the first limit plate (10) and the second limit plate (11) are each provided in two groups and are symmetrically distributed on the outer wall of the first bidirectional screw (8).

2. A lithium battery diaphragm stretching device according to claim 1, characterized in that: The adjustment assembly comprises a third motor (14), the third motor (14) is fixedly connected to one side of the processing table (1), a slide groove (17) is provided at the top of the processing table (1), the output end of the third motor (14) is fixedly connected to a second bidirectional screw rod (15), the second bidirectional screw rod (15) is rotatably arranged on the inner wall of the slide groove (17), the bottom of the slide plate (3) is fixedly connected to a slider (16), the inner wall of the slider (16) is slidably connected to the outer wall of the second bidirectional screw rod (15).

3. A lithium battery diaphragm extension device according to claim 2, characterized in that: The inner wall of the first limiting plate (10) is rotatably connected to a round rod (12), the outer wall of the round rod (12) is fixedly connected to a spiral spring sheet, one side of the spiral spring sheet is fixedly connected to an isolation belt (13), and one side of the isolation belt (13) is fixedly connected to one side of the second limiting plate (11).

4. A lithium battery diaphragm stretching device according to claim 3, characterized in that: The bottom of the slider (16) is slidably connected to a pulley (18), and the bottom of the slider (16) is slidably connected to the inner wall of the slide groove (17) through the pulley (18).

5. A lithium battery diaphragm stretching device according to claim 4, characterized in that: A gasket (19) is fixedly connected to the bottom of the pillar (2). The gasket (19) is made of rubber. Four groups of gaskets (19) are provided and are symmetrically distributed at the bottom of the four groups of pillars (2).

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