Stable conveying device for lithium battery diaphragm offcut

Abstract

The utility model discloses a lithium battery diaphragm offcut stable conveying device which comprises a device body, an edge cutting assembly arranged on the device body and used for cutting diaphragm offcuts and a winding machine used for winding the offcuts, the device body is further provided with a roller assembly for the offcuts to penetrate through, and the roller assembly comprises a steel roller for stabilizing the tension of the offcuts. The device body is provided with a compression roller assembly attached to the surface of the steel roller, and the device body is provided with a motor connected with the steel roller. The rim charge conveying device is simple in structure, under the action of the pressing roller assembly and the steel roller, it is guaranteed that the rim charge conveying process is stable and is not affected by manual roll changing operation errors or winding machine abnormity, when the rim charge winding machine is abnormal, a bag or a barrel can be directly used for receiving rim charges, and the motor connected with the steel roller controls the motor roller speed through tension data fed back by the tension roller; therefore, the tension is stabilized to prevent the rim charge from being torn or rewound, the rim charge conveying device and the edge cutting device are not affected by the rim charge winding machine, and production abnormity caused by manual roll changing or winding machine abnormity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery diaphragm preparation, in particular to a device for stably conveying lithium battery diaphragm edge material. Background Art

[0002] Lithium battery separator is a film with a microporous structure made of PE or PP powder by dry or wet process. It has the function of separating the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting and allowing electrolyte ions to pass through. During the production process, the lithium battery separator is clamped by chain clamps and stretched horizontally to give it a certain microporous structure. The separator is thick because the clamping parts on both sides of the chain clamps cannot be stretched, so the thick edge materials on both sides need to be cut off. Because the production line is in continuous production, special equipment is required for online trimming, conveying, and winding and recycling of thick edge materials. The thickness of the edge materials is uneven and the tension may fluctuate, which makes it easy to tear during the online cutting process, which has a certain impact on the production continuity of the production line, so the equipment stability requirements are relatively high.

[0003] Most of the existing lithium battery diaphragm edge trimming and winding equipment have a simple structure and a single function. The edge needs to be replaced continuously during the production process. Most of the equipment needs to manually pull the edge to change the roll after the edge is full, which requires the cooperation of multiple people and is extremely unstable and easy to be pulled and torn. A small number of equipment can realize automatic roll change, but the tension fluctuates greatly during the replacement process, and when there is an abnormality in the automatic roll changing equipment, it will directly cause tearing. The equipment is wound by a single motor on the edge winding machine. When the motor on the edge winding machine does not rotate abnormally, the edge tension will disappear instantly, the edge loosens and directly causes tearing, and there is no reaction time. Therefore, a stable conveying device for lithium battery diaphragm edge is proposed. Utility Model Content

[0004] The utility model aims to provide a device for stably conveying lithium battery separator edge materials to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stable conveying device for lithium battery diaphragm edge materials, comprising a device main body and a trimming assembly arranged on the device main body for cutting the diaphragm edge materials and a winding machine for winding the edge materials, the device main body is also equipped with a roller assembly for the edge materials to pass through, the roller assembly includes a steel roller for stabilizing the tension of the edge materials, the device main body is equipped with a pressure roller assembly that fits the surface of the steel roller, and the device main body is provided with a motor connected to the steel roller.

[0006] As a further solution of the utility model: the roller assembly includes a first roller, a second roller, a tension roller and a third roller which are sequentially connected to the device body, the first roller, the second roller and the tension roller are all located between the trimming assembly and the steel roller, and the third roller is located between the winder and the steel roller.

[0007] As a further solution of the utility model: the tension roller has a wrap angle of >120° with the first passing roller and the second passing roller separated therefrom.

[0008] As a further solution of the utility model: a motor is installed at the end of the steel roller, and the motor is connected to the tension roller through a controller.

[0009] As a further solution of the utility model: the pressure roller assembly includes a rotating shaft installed on the device body, the outer circumference of the rotating shaft is connected to a connecting rod, and the end of the connecting rod away from the rotating shaft is equipped with a pressure roller body in contact with the outer circumference of the steel roller.

[0010] As a further solution of the utility model: a positioning block is installed on the device body, and the positioning block is connected to the connecting rod through a tension spring. If the tension spring is in an initial state, the surface of the pressure roller body contacts the outer surface of the steel roller.

[0011] As a further solution of the utility model: a plurality of small cones are evenly distributed on the outer circumference of the steel roller, and the plurality of small cones are arranged in a regular triangle.

[0012] As a further solution of the utility model: a plurality of small circular holes are evenly distributed on the outer circumference of the steel roller.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Under the action of the pressure roller assembly and the steel roller, the present application ensures that the edge material conveying process is stable and is not affected by manual roll changing operation errors or winder abnormalities. When the edge material winder is abnormal, the edge material can be directly connected to a bag or a barrel, and the motor connected to the steel roller controls the motor roller speed through tension roller feedback tension data, thereby stabilizing the tension to prevent the edge material from tearing or rewinding, and the edge material conveying and trimming device are not affected by the edge material winder, reducing production abnormalities caused by manual roll changing or winder abnormalities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a lithium battery separator edge material stable conveying device of the utility model;

[0016] Figure 2 It is a schematic diagram of the steel roller of the utility model;

[0017] Figure 3 This is a schematic diagram of another embodiment of the steel roller of the utility model;

[0018] In the figure: 1. Device body; 2. Trimming assembly; 3. Winding machine; 4. First roller; 5. Second roller; 6. Tension roller; 7. Steel roller; 8. Third roller; 9. Rotating shaft; 10. Connecting rod; 11. Pressure roller body; 12. Tension spring. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-3 In an embodiment of the utility model, a stable conveying device for lithium battery diaphragm edge material includes a device body 1 and a trimming assembly 2 for cutting the diaphragm edge material and a winding machine 3 for winding the edge material, which is arranged on the device body 1. A roller assembly for the edge material to pass through is also installed on the device body 1. The roller assembly includes a steel roller 7 for stabilizing the tension of the edge material. A pressure roller assembly is installed on the device body 1 and is in contact with the surface of the steel roller 7. The device body 1 is provided with a motor connected to the steel roller 7.

[0021] Specifically, the device body 1 serves as the foundation of the entire device and provides support points for other components to ensure the stability of other components during operation. The diaphragm edge material is initially cut after passing through the trimming assembly 2. The cut edge material enters the pressure roller assembly and the steel roller 7, and is finally wound onto the winder 3 to ensure the stability of the diaphragm edge material during transportation.

[0022] See also Figure 1 In one embodiment, in this embodiment, preferably, the roller assembly includes a first roller 4, a second roller 5, a tension roller 6 and a third roller 8 which are sequentially connected to the device body 1, the first roller 4, the second roller 5 and the tension roller 6 are all located between the trimming assembly 2 and the steel roller 7, the third roller 8 is located between the winder 3 and the steel roller 7, further, the cut edge material goes from the first roller 4, the second roller 5, to the tension roller 6 and then passes through the steel roller 7 by the tension roller 6, and then is wound on the winder 3 through the third roller 8, thereby completing the conveying and winding of the edge material.

[0023] See also Figure 1 In one embodiment, in this embodiment, preferably, the tension roller 6 has a wrap angle of >120° with the first roller 4 and the second roller 5. Furthermore, in the process of the diaphragm edge material from the first roller 4 to the second roller 5 and then to the tension roller 6, the angle formed is greater than 120°, which means that when the material moves around these rollers, it covers a partial surface area of ​​the tension roller 6 of more than 120, which can prevent the edge material from slipping and causing unstable tension.

[0024] See also Figure 1In one embodiment, in this embodiment, preferably, a motor is installed at the end of the steel roller 7, and the motor is connected to the tension roller 6 through a controller. Furthermore, the tension of the cut edge material is detected by the first passing roller 4, the second passing roller 5 and the tension roller 6, and then the motor speed is adjusted through the tension feedback of the tension roller 6, thereby achieving the effect of stabilizing the tension.

[0025] See also Figure 1-2 In one embodiment, in this embodiment, preferably, the pressure roller assembly includes a rotating shaft 9 installed on the device body 1, the outer peripheral surface of the rotating shaft 9 is connected to a connecting rod 10, and the end of the connecting rod 10 away from the rotating shaft 9 is installed with a pressure roller body 11 that contacts the outer peripheral surface of the steel roller 7, and a positioning block 13 is installed on the device body 1, and the positioning block 13 is connected to the connecting rod 10 through a tension spring 12. If the tension spring 12 is in the initial state, the surface of the pressure roller body 11 contacts the outer surface of the steel roller 7.

[0026] Specifically, the pressure roller body 11 is made of rubber, and a plurality of small cones are evenly distributed on the outer circumference of the steel roller 7, and the plurality of small cones are arranged in an equilateral triangle, so that the steel roller 7 with the small cone sharp angles can fit more tightly, making the edge material less likely to slip and the transportation more stable. When the edge material is threaded, the pressure roller body 11 can be manually controlled to press the edge material, and the operation is convenient. After the edge material is stably conveyed by the steel roller 7 and the pressure roller body 11, it is wound up through the third roller 8 and the winder 3. The steel roller 7 and the pressure roller body 11 with small cone sharp angles evenly distributed on the roller surface cooperate with each other to prevent the edge material from slipping and falling off during the conveying process, and the steel roller 7 is equipped with a motor, which can stably convey the edge material, and the motor can control the motor roller speed through the tension roller 6 to feedback the tension data, thereby stabilizing the tension to prevent the edge material from tearing or rewinding, and the edge material conveying and trimming device are not affected by the edge material winder, reducing production abnormalities caused by manual roll changing or winder abnormalities.

[0027] See also Figure 3 In another embodiment, in this embodiment, preferably, a plurality of small circular holes are evenly distributed on the outer circumference of the steel roller 7. Further, the edge material is adsorbed by a vacuum suction device to fix the edge material and prevent it from slipping and falling off.

[0028] The working principle and use process of the utility model are as follows: after the diaphragm edge material comes out of the trimming assembly 2, it passes through the first roller 4, the second roller 5, the tension roller 6, the steel roller 7, the third roller 8 in sequence and is finally wound on the winding machine 3. By pulling the handle on the connecting rod 10, the pressure roller body 11 and the steel roller 7 are separated, which facilitates the edge material to pass through the steel roller 7 and the pressure roller body 11.

[0029] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0030] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A lithium battery separator edge material stable conveying device, comprising a device body (1), a trimming assembly (2) arranged on the device body (1) for cutting separator edge material, and a winding machine (3) for winding edge material, characterized in that: The device body (1) is also provided with a roller assembly for the edge material to pass through, the roller assembly comprising a steel roller (7) for stabilizing the tension of the edge material, the device body (1) is provided with a pressure roller assembly in contact with the surface of the steel roller (7), and the device body (1) is provided with a motor connected to the steel roller (7).

2. The lithium battery separator edge material stable conveying device according to claim 1, characterized in that: The roller assembly comprises a first roller (4), a second roller (5), a tension roller (6) and a third roller (8) which are sequentially connected to the device body (1); the first roller (4), the second roller (5) and the tension roller (6) are all located between the trimming assembly (2) and the steel roller (7); and the third roller (8) is located between the winding machine (3) and the steel roller (7).

3. The lithium battery separator edge material stable conveying device according to claim 2, characterized in that: The tension roller (6) has a wrap angle of >120° with the first passing roller (4) and the second passing roller (5) separated from each other.

4. The lithium battery separator edge material stable conveying device according to claim 2, characterized in that: A motor is installed at the end of the steel roller (7), and the motor is connected to the tension roller (6) via a controller.

5. The lithium battery separator edge material stable conveying device according to claim 1, characterized in that: The pressure roller assembly comprises a rotating shaft (9) mounted on a device body (1); the outer peripheral surface of the rotating shaft (9) is connected to a connecting rod (10); and the end of the connecting rod (10) away from the rotating shaft (9) is equipped with a pressure roller body (11) in contact with the outer peripheral surface of a steel roller (7).

6. The lithium battery separator edge material stable conveying device according to claim 5, characterized in that: A positioning block (13) is installed on the device body (1), and the positioning block (13) is connected to the connecting rod (10) via a tension spring (12). If the tension spring (12) is in an initial state, the surface of the pressure roller body (11) contacts the outer surface of the steel roller (7).

7. The lithium battery separator edge material stable conveying device according to claim 1, characterized in that: A plurality of small cones are evenly distributed on the outer peripheral surface of the steel roller (7), and the plurality of small cones are arranged in a regular triangle.

8. The lithium battery separator edge material stable conveying device according to claim 1, characterized in that: A plurality of small circular holes are evenly distributed on the outer peripheral surface of the steel roller (7).

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