CN215266402U

CN215266402U - Lamination device

Info

Publication number: CN215266402U
Application number: CN202120663075.3U
Authority: CN
Inventors: 占义包; 刘万华; 彭煜辉; 陈木贵
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-21
Anticipated expiration: 2031-03-31

Abstract

The application provides lamination equipment which comprises an unreeling device, a roller, a tension adjusting device and a lamination device, wherein the unreeling device is used for unreeling a diaphragm; the roller is used for supporting the diaphragm; the tension adjusting device comprises a swing arm assembly and a buffer roller assembly, the swing arm assembly comprises a swing arm and a mounting seat, and the swing arm is rotatably mounted on the mounting seat; the buffer roller assembly comprises a buffer roller capable of moving up and down; the swing arm and the buffer roller assembly are used for adjusting the tension of the diaphragm; the laminating device comprises a clamping roller module and a film pressing device, the clamping roller module is used for clamping the diaphragm to move, the film pressing device is used for mutually matching with the clamping roller module to fold the diaphragm, and the roller passing and tension adjusting device is arranged between the unwinding device and the laminating device. According to the lamination equipment of this application embodiment, through the rotation of control swing arm and reciprocating of buffer memory roller, can accurate control diaphragm's tension for the diaphragm does not receive the influence that removes about the pinch roller module, keeps tension constant state all the time at lamination in-process.

Description

Lamination device

Technical Field

The application relates to the technical field of lithium battery production and manufacturing, in particular to lamination equipment.

Background

At present, the lithium battery processing technology in the lithium battery industry mainly adopts a winding technology, the production efficiency is high, but the performances of all aspects of the battery core are general; compared with a winding process, the lamination process is complex in processing process and low in production efficiency, but the battery core has good performance in all aspects, and the lamination lithium battery gradually becomes one of mainstream choices in the lithium battery industry along with the development of an automatic technology. Tension control is used as a vital technology in a lithium battery lamination process, the quality of a finished product of a battery cell is directly influenced, a diaphragm is easy to deform and even break when tension is too high, and the diaphragm is easy to wrinkle and retract when tension is too low, so that lamination deviation is caused, and the requirements on safety and performance of the battery cell cannot be met.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. To this end, the present application proposes a lamination device capable of controlling the diaphragm tension constant.

The lamination device comprises an unwinding device, a roller, a tension adjusting device and a lamination device, wherein the unwinding device is used for unwinding a diaphragm; the roller is used for supporting the diaphragm; the tension adjusting device comprises a swing arm assembly and a buffer roller assembly, the swing arm assembly comprises a swing arm and a mounting seat, and the swing arm is rotatably mounted on the mounting seat; the buffer roller assembly comprises a buffer roller capable of moving up and down; the swing arm and the buffer roller assembly are used for adjusting the tension of the diaphragm; the lamination device comprises a clamping roller module and a film pressing device, wherein the clamping roller module is used for clamping the diaphragm to move, the film pressing device is used for cooperating with the clamping roller module to fold the diaphragm, the roller is crossed, and the tension adjusting device is arranged between the unwinding device and the lamination device.

The lamination device according to the embodiment of the application has at least the following advantages: through the structure of reasonable setting lamination equipment, set up tension adjusting device in lamination equipment, tension adjusting device includes swing arm subassembly and buffer roller subassembly, at the lamination in-process, swing arm subassembly and buffer roller subassembly mutually support, through reciprocating of the rotation of control swing arm and buffer roller, can accurate control diaphragm's tension, make the diaphragm not receive the influence that removes about the pinch roller module, keep tensioning and tension constancy all the time at the lamination in-process, and then can ensure the lamination quality of lamination equipment.

According to some embodiments of the application, the unwinding device comprises a motor and an unwinding shaft, and the motor is used for driving the unwinding shaft to unwind the membrane.

According to some embodiments of the present application, the nip roller module comprises a slide rail, a slider assembly and a nip roller, the slider assembly is slidably mounted on the slide rail, the slider assembly is connected with the nip roller, and the nip roller is used for clamping the diaphragm to move.

According to some embodiments of the present application, the buffer roller assembly further comprises a driving device connected with the buffer roller (132), the driving device is used for driving the buffer roller to move upwards or downwards.

According to some embodiments of the application, the swing arm assembly further comprises a cylinder, an output end of the cylinder is connected with the swing arm, and the cylinder is used for driving the swing arm to rotate.

According to some embodiments of the application, the lamination device further comprises a tension sensing device and a control device, wherein the tension sensing device is arranged on one side of the swing arm close to the clamping roller module, and the tension sensing device is used for detecting the tension of the diaphragm; the control device is in communication connection with the tension sensing device, the driving device and the cylinder, and is used for receiving a tension signal of the diaphragm and controlling the driving device to drive the buffer memory roller to move up and down and control the cylinder to drive the swing arm to rotate so as to adjust the tension of the diaphragm, and further provide a reliable hardware basis for the automatic control of the diaphragm tension of the lamination device.

According to some embodiments of the application, the lamination device further comprises floating rollers, wherein the two adjacent sides of the floating rollers are respectively provided with a passing roller, and the passing rollers on the two sides of the floating rollers are both positioned below the floating rollers; a hollow window area is arranged in the middle of the swing arm and is used for a diaphragm to pass through; along the walking direction of diaphragm, the relative both ends of swing arm are provided with first end roller and second respectively and hold the roller, the adjacent both sides of first end roller, second end roller all are provided with the roller, and work as when the swing arm is in balanced position, the roller of crossing of the adjacent both sides of first end roller all is located the top of first end roller, and the roller of crossing of the adjacent both sides of second end roller all is located the below of second end roller.

According to some embodiments of the application, lamination equipment still includes deviation correcting device, deviation correcting device is including rectifying sensor and mobile device, rectifying sensor with the mobile device electricity is connected, rectifying sensor set up in unwinding device is close to one side of swing arm, mobile device with unwinding device connects.

According to some embodiments of the application, the moving device comprises a sliding block and a sliding rail, the sliding block is slidably mounted on the sliding rail, and the sliding block is connected with the unwinding device.

According to some embodiments of the application, press mold device sets up the below of double-layered roller module, press mold device includes first press mold mechanism and second press mold mechanism, first press mold mechanism with second press mold mechanism sets up relatively, mutually supports and is used for pressing the diaphragm.

According to some embodiments of the application, the film laminating machine further comprises a machine table and a vertical plate, wherein the vertical plate, the unreeling device and the film laminating device are arranged on the machine table, and the roller passing device, the tension adjusting device and the roller clamping module are arranged on the vertical plate.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

fig. 2 is a front view of an embodiment of the present application.

Fig. 3 is a partially enlarged view of the area a in fig. 1.

Reference numerals: the laminating device 100, the roller 110, the unreeling device 120, the motor 121, the unreeling shaft 122, the tension adjusting device 130, the swing arm 131, the first end roller 133, the second end roller 134, the buffer roller 132, the clamping roller module 140, the slide rail 141, the slider assembly 142, the clamping roller 143, the film pressing device 150, the first film pressing mechanism 151, the second film pressing mechanism 152, the tension sensing device 160, the deviation correcting device 170, the moving device 171, the diaphragm 180, the machine table 190 and the vertical plate 191.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

A lamination apparatus 100 according to an embodiment of the present application is described below with reference to fig. 1 to 2.

As shown in fig. 1, a lamination apparatus 100 according to the present application for zigzag lamination of diaphragms includes: a roll 110, an unwinding device 120, a tensioning device 130 and a lamination device. The unwinding device 120 is used for unwinding the membrane 180, and the roller 110 is used for supporting the membrane 180; the tension adjusting device 130 comprises a swing arm assembly and a buffer roller assembly, the swing arm assembly comprises a swing arm 131 and a mounting seat, and the swing arm 131 is rotatably mounted on the mounting seat; the buffer roller assembly comprises a buffer roller capable of moving up and down; the swing arm 131 and the buffer roller assembly are used for adjusting the tension of the diaphragm; the lamination device comprises a clamping roller module 140 and a film pressing device 150, wherein the clamping roller module 140 is used for clamping the diaphragm 180 to move, the film pressing device 150 is used for being matched with the clamping roller module 140 to fold the diaphragm 180, and the passing roller 110 and the tension adjusting device 130 are arranged between the unwinding device 120 and the lamination device.

Specifically, the unwinding device 120 is used for unwinding the membrane 180; the over roller 110 is used to support the diaphragm 180; the lamination device is used to fold the membrane 180; the tension adjusting device 130 includes a swing arm assembly and a buffer roller assembly, the swing arm 131 is rotatably mounted on the mounting base, and the diaphragm 180 is in a tensioned state by controlling a rotation angle of the swing arm 131 and an up/down movement of the buffer roller, thereby realizing a constant tension.

Referring to fig. 1, the unwinding device 120 includes a motor 121 and an unwinding shaft 122, wherein the motor 121 is configured to drive the unwinding shaft 122 to unwind the membrane 180. Specifically, the motor 121 is a servo motor, the diaphragm 180 is placed on the unwinding shaft 122, and the motor 121 drives the unwinding shaft 122 to unwind the diaphragm 180.

Referring to fig. 1, the nip roller module 140 includes a slide rail 141, a slider assembly 142, and nip rollers 143, the slider assembly 142 is slidably mounted on the slide rail 141, the slider assembly 142 is connected to the nip rollers 143, and the nip rollers 143 are used for nipping the diaphragm 180 to move. Specifically, the slider assembly 142 is mounted on the slide rail 141 and can drive the clamping roller 143 to move left and right, and the clamping roller 143 clamps the diaphragm 180 to move left and right and can cooperate with the film pressing device 150 to fold the diaphragm 180.

The buffer roller assembly comprises a buffer roller 132 and a driving device, wherein the buffer roller 132 is connected with the driving device, and the driving device is used for driving the buffer roller 132 to move upwards or downwards, so that the diaphragm 180 is tensioned, and the tension stability of the diaphragm is ensured.

The swing arm assembly further comprises an air cylinder, and the output end of the air cylinder is connected with the swing arm 131 and used for driving the swing arm 131 to rotate. Specifically, the air cylinder is a low-friction air cylinder, and an output end of the air cylinder is connected with the swing arm 131 and used for driving the swing arm 131 to rotate, so that the diaphragm 180 is in a tensioned state and the tension is kept constant.

Referring to fig. 2, the lamination apparatus 100 further includes a tension sensing device 160 and a control device (not shown), the tension sensing device 160 is disposed on a side of the swing arm 131 close to the nip roller module 140, and the tension sensing device 160 is used for detecting the tension of the diaphragm 180, and particularly detecting the tension of the diaphragm 180 passing through the swing arm 131. The tension sensing device 160, the driving device and the air cylinder are in communication connection with the control device, and the control device is used for receiving a tension signal of the diaphragm 180, controlling the driving device to drive the buffer roller to move up and down according to the tension signal, and controlling the air cylinder to drive the swing arm to rotate according to the tension signal, so that the diaphragm 180 is in a tensioning state, and the tension is kept constant. In this embodiment, the arrangement of the tension sensing device 160 and the control device provides a reliable hardware basis for the lamination apparatus of the present application to achieve automated control of the diaphragm tension.

Referring to fig. 1, the laminating apparatus 100 further includes a deviation correcting device 170, the deviation correcting device 170 includes a deviation correcting sensor and a moving device 171, the deviation correcting sensor is electrically connected to the moving device 171, the deviation correcting sensor is disposed on one side of the unwinding device 120 close to the swing arm 131, and the moving device 171 is connected to the unwinding device 120. Specifically, the unwinding device 120 is easy to have the deviation of the membrane 180 during the unwinding process, a deviation sensor is used to detect the membrane 180, and when the membrane 180 deviates, the moving device 171 moves the unwinding device 120 to correct the position deviation of the membrane 180 during the transmission.

Referring to fig. 1, the moving device 171 includes a slider and a slide rail 141, the slider is slidably mounted on the slide rail 141, and the slider is connected to the unwinding device 120. Specifically, the moving device 171 includes two slide rails 141 and four slide blocks, the four slide blocks are respectively connected to the unwinding device 120, and the four slide blocks are respectively slidably mounted on the two slide rails 141 two by two, so that the unwinding device 120 can move on the slide rails 141 in a direction perpendicular to the transmission direction of the diaphragm 180, and further, the position deviation of the diaphragm 180 during transmission can be corrected.

Referring to fig. 1, the film pressing device 150 is disposed below the nip roller module 140, the film pressing device 150 includes a first film pressing mechanism 151 and a second film pressing mechanism 152, and the first film pressing mechanism 151 and the second film pressing mechanism 152 are disposed opposite to each other and cooperate with each other to press the diaphragm 180. Specifically, the first film pressing mechanism 151 and the second film pressing mechanism 152 are respectively disposed on two sides of the diaphragm 180, and the nip roller 143 clamps the diaphragm 180 to move and cooperate with the first film pressing mechanism 151 and the second film pressing mechanism 152, so that the first film pressing mechanism 151 and the second film pressing mechanism 152 press the diaphragm 180 left and right to perform a lamination operation.

Referring to fig. 1, the apparatus further includes a machine table 190 and a vertical plate 191, the unwinding device 120, the film pressing device 150, and the moving device 171 of the deviation correcting device 170 are all installed on the machine table 190, and the over-roll 110, the tension adjusting device 130, and the nip-roll module 140 are all installed on the vertical plate 191. Specifically, the unwinding device 120 and the film pressing device 150 are placed on the machine table 190, so that an operator can operate the film pressing device conveniently; the vertical plate 191 is provided with the over roller 110, the tension adjusting device 130 and the nip roller module 140, and the vertical plate 191 is used for installing and supporting the over roller 110, the tension adjusting device 130 and the nip roller module 140. Specifically, the mounting of the swing arm assembly, and the drive for the buffer roller assembly are mounted on the riser 191.

A lamination apparatus 100 according to an embodiment of the present application is described in detail below in a specific embodiment with reference to fig. 1 and 2. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.

Referring to fig. 1, when the motor 121 is started, the unwinding shaft 122 unwinds the diaphragm 180; the diaphragm 180 bypasses the buffer roller 132, the swing arm 131, the over roller 110 and the clamping roller 143 and finally falls onto the film pressing device 150, a deviation correcting device 170 is arranged on one side of the unwinding device 120 close to the buffer roller 132 and can correct the position deviation of the diaphragm 180 in transmission, the clamping roller 143 clamps the diaphragm 180 to move left and right and is matched with the first film pressing mechanism 151 and the second film pressing mechanism 152, so that the first film pressing mechanism 151 and the second film pressing mechanism 152 press the diaphragm 180 left and right to perform lamination operation, in the lamination process, the tension sensor detects the tension of the diaphragm 180, when the tension is detected to be not constant, the control device controls the air cylinder to drive the swing arm 131 to rotate, and controls the driving device to drive the buffer roller 132 to move upwards or downwards to adjust the tension of the diaphragm 180, so that the diaphragm 180 is in a tensioning state and the tension of the diaphragm 180 is kept constant.

In a specific embodiment, as shown in fig. 2, the lamination apparatus 100 further includes a floating roller 132, the rollers 110 are respectively disposed at two adjacent sides of the floating roller 132, the rollers 110 at two sides of the floating roller 132 are both located below the floating roller 132, and the rollers 110 are mounted on the vertical plate and cannot move up and down. So that the membrane 180 can be tensioned when the dancer 132 moves upward; when the dancer moves down, a portion of the membrane can be released. As shown in fig. 2 and 3, a hollow window region is disposed in the middle of the swing arm 131 for the diaphragm to pass through; along the moving direction of the diaphragm, the opposite ends of the swing arm 131 are respectively provided with a first end roller 133 and a second end roller 132, the adjacent two sides of the first end roller 133 and the second end roller 134 are both provided with a roller 110, and when the swing arm is in a balance position (i.e. the swing arm is in a horizontal position), the rollers 110 of the adjacent two sides of the first end roller 133 are both located above the first end roller 133, and the rollers 110 of the adjacent two sides of the second end roller 134 are both located below the second end roller 134. Specifically, the first end roller 133 is located at the left end of the swing arm 131, and the second end roller 134 is located at the right end of the swing arm 131. So that when the swing arm 131 rotates counterclockwise, both ends of the swing arm 131 cooperate with the over-roller 110 to tighten and consume a part of the surplus diaphragm 180; when the swing arm 131 rotates clockwise, both ends of the swing arm 131 are engaged with the rollers 110 to release a portion of the diaphragm 180.

In a specific embodiment, as shown in fig. 2, when the tension sensor detects that the tension of the diaphragm 180 is too small, which indicates that the amount of the diaphragm discharged from the diaphragm unwinding device 120 is greater than the lamination consumption amount of the lamination device, that is, an excess phenomenon occurs in the diaphragm 180, the air cylinder drives the swing arm 131 to rotate counterclockwise, both ends of the swing arm 131 cooperate with the over roller 110 to tension and consume a portion of the excess diaphragm 180, and at the same time, the buffer roller 132 moves upward under the action of the driving device to tension and consume more excess diaphragm 180, thereby eliminating the excess phenomenon of the diaphragm 180 and keeping the tension of the diaphragm 180 constant. When the tension sensor detects that the tension of the diaphragm 180 is larger, it is indicated that the diaphragm amount discharged by the diaphragm unwinding device 120 is smaller than the lamination consumption amount of the lamination device, that is, the diaphragm 180 is over-tightened, at this time, the air cylinder drives the swing arm 131 to rotate clockwise, the two ends of the swing arm 131 are matched with the over-roller 110 to release a part of the diaphragm 180, and meanwhile, the buffer roller 132 moves downwards under the action of the driving device to release more diaphragms 180, so that the over-tightening phenomenon of the diaphragm 180 is eliminated, and the tension of the diaphragm 180 is kept constant.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims

1. A lamination apparatus, comprising:

the unwinding device is used for unwinding the diaphragm;

a roller for supporting the diaphragm;

the tension adjusting device comprises a swing arm assembly and a buffer roller assembly, the swing arm assembly comprises a swing arm and a mounting seat, and the swing arm is rotatably mounted on the mounting seat; the buffer roller assembly comprises a buffer roller capable of moving up and down; the swing arm and the buffer roller assembly are used for adjusting the tension of the diaphragm; and

the laminating device comprises a clamping roller module and a film pressing device, wherein the clamping roller module is used for clamping the diaphragm to move, and the film pressing device is used for matching with the clamping roller module to fold the diaphragm; the roller passing device and the tension adjusting device are arranged between the unreeling device and the laminating device.

2. The lamination apparatus according to claim 1, wherein the unwinding device comprises a motor and an unwinding shaft, the motor being configured to drive the unwinding shaft to unwind the membrane.

3. The laminating apparatus of claim 1, wherein the nip roller module comprises a slide rail on which the slide assembly is slidably mounted, a slide assembly coupled to the nip roller, and a nip roller for nipping the diaphragm for movement.

4. The laminating apparatus according to claim 1, wherein the buffer roller assembly further comprises a driving means connected to the buffer roller for driving the buffer roller to move up or down; the swing arm assembly further comprises an air cylinder, the output end of the air cylinder is connected with the swing arm, and the air cylinder is used for driving the swing arm to rotate.

5. The lamination apparatus according to claim 4, further comprising a tension sensing device and a control device, wherein the tension sensing device is disposed on a side of the swing arm close to the nip roller module, and the tension sensing device is used for detecting tension of the diaphragm; the tension sensing device, the driving device and the air cylinder are all in communication connection with the control device, and the control device is used for receiving tension signals of the diaphragm, controlling the driving device to drive the buffer roller to move up and down according to the tension signals, and controlling the air cylinder to drive the swing arm to rotate.

6. The laminating device according to claim 1, further comprising floating rollers, wherein the two adjacent sides of the floating rollers are respectively provided with a passing roller, and the passing rollers on the two sides of the floating rollers are positioned below the floating rollers; a hollow window area is arranged in the middle of the swing arm and is used for a diaphragm to pass through; along the walking direction of diaphragm, the relative both ends of swing arm are provided with first end roller and second respectively and hold the roller, the adjacent both sides of first end roller, second end roller all are provided with the roller, and work as when the swing arm is in balanced position, the roller of crossing of the adjacent both sides of first end roller all is located the top of first end roller, and the roller of crossing of the adjacent both sides of second end roller all is located the below of second end roller.

7. The laminating device of claim 1, further comprising a deviation correction device, wherein the deviation correction device comprises a deviation correction sensor and a moving device, the deviation correction sensor is electrically connected with the moving device, the deviation correction sensor is arranged on one side of the unwinding device close to the swing arm, and the moving device is connected with the unwinding device.

8. The lamination device according to claim 7, wherein the moving means comprises a slide block and a slide rail, the slide block is slidably mounted on the slide rail, and the slide block is connected to the unwinding means.

9. The lamination apparatus according to claim 1, wherein the lamination device is disposed below the nip roller module, and the lamination device includes a first lamination mechanism and a second lamination mechanism, and the first lamination mechanism and the second lamination mechanism are disposed opposite to each other and cooperate with each other for pressing the diaphragm.

10. The laminating apparatus according to claim 1, further comprising a machine table and a vertical plate, wherein the vertical plate, the unwinding device and the film pressing device are all mounted on the machine table, and the roller, the tension adjusting device and the nip roller module are all mounted on the vertical plate.