Unwinding device and battery production system

Abstract

The utility model relates to the technical field of lithium battery coating, in particular to an unwinding device and a battery production system. The utility model provides an unwinding device. The unwinding device comprises unwinding equipment, a rack, walking equipment and lifting equipment, the number of the unwinding devices is two, the two unwinding devices are both arranged on the rack, and the two unwinding devices are arranged in the height direction of the rack in a spaced mode. The walking device can move between the coiled material warehouse and the rack and can convey coiled materials to the two unwinding devices. The lifting equipment can bear the walking equipment and enables the walking equipment to move in the height direction of the rack. Compared with the prior art, the two unwinding devices are arranged on the rack in the up-down spaced mode, the occupied space of the unwinding devices can be reduced, and arrangement of the unwinding devices is facilitated. And moreover, the walking equipment is matched with the lifting equipment to convey the coiled materials for the unwinding equipment, automatic coil changing can be achieved, the labor cost is reduced, and automatic production is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery coating, in particular to an unwinding device and a battery production system. Background Art

[0002] Lithium battery coating is a key step in the production process of lithium-ion batteries, which mainly involves evenly coating the slurry mixed with positive and negative active materials on the foil. During the coating process, the unwinding equipment is required to unwind the rolled foil to the downstream coating equipment for coating.

[0003] At present, in order to improve production efficiency, positive and negative electrode sheets are usually prepared at the same time, so two unwinding devices are needed to unwind the downstream coating equipment together. In existing coating plants, the two unwinding devices are generally placed separately, resulting in excessive space occupation and high costs. Utility Model Content

[0004] (I) The problem to be solved by the present invention is that in the existing coating plant where positive and negative electrode sheets are coated simultaneously, two unwinding devices are placed separately, which occupies a large area, is costly, and is inconvenient to arrange.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the utility model provides an unwinding device in one embodiment, including: an unwinding device, a frame, a walking device and a lifting device;

[0007] Two unwinding devices are provided, both of which are provided on the frame, and the two unwinding devices are spaced apart along the height direction of the frame;

[0008] The walking device can move between the coil storage and the frame, and can transport coils to the two unwinding devices;

[0009] The lifting device can carry the walking device and enable the walking device to move along the height direction of the frame.

[0010] Further, the unwinding device includes a supporting assembly, a turntable, a fixing assembly and a first driving assembly;

[0011] Two rotating disks are provided, and both rotating disks are rotatably arranged on the supporting assembly, and the first driving assembly is used to drive the two rotating disks to rotate synchronously;

[0012] Each of the turntables is provided with a plurality of groups of the fixing components, and all of the fixing components are arranged on the turntable at intervals around the rotation center of the turntable; the fixing components on the two turntables correspond to each other one by one, and the corresponding two groups of the fixing components are arranged relatively to fix the coiled material.

[0013] Further, the fixing assembly includes a clamp, a first connecting member and a telescopic member;

[0014] The chucks of the two corresponding groups of the fixing components are arranged opposite to each other, and the first connecting member is slidably arranged on the corresponding turntable. One end of the first connecting member is connected to the side of the chuck away from the other chuck, and the other end is connected to the telescopic member, and the telescopic member drives the first connecting member to slide.

[0015] Furthermore, the unwinding device further includes a synchronization component arranged corresponding to the fixing component;

[0016] The unwinding device also includes a synchronization component arranged corresponding to the fixing component;

[0017] The first connecting member is a connecting shaft, which is also rotatably arranged on the corresponding rotating disk, one end of the connecting shaft is fixedly connected to the chuck, and the other end of the connecting shaft rotates circumferentially with the telescopic member while being axially fixed;

[0018] The synchronization component connects the rotating disk and the corresponding connecting shaft. Under the action of the synchronization component, when the rotating disk rotates, the connecting shaft can drive the chuck to rotate synchronously with the rotating disk.

[0019] Furthermore, it also includes a cutter assembly; the cutter assembly includes a swing arm, a pressure roller, a pressure roller frame, a cutter, a cutter frame, a first driving member, a second driving member and a third driving member;

[0020] The swing arm is rotatably arranged on the support assembly, and the first driving member is used to drive the swing arm to rotate on the support assembly;

[0021] One end of the pressure roller frame is rotatably mounted on the swing arm, and the other end is provided with the pressure roller; one end of the cutting knife frame is rotatably mounted on the swing arm, and the other end is provided with the cutting knife;

[0022] The second driving member is used to drive the pressure roller frame to rotate on the swing arm; the third driving member is used to drive the cutting knife frame to rotate on the swing arm.

[0023] Further, the lifting device includes a lifting frame, a second driving assembly, a transmission assembly and a carrying platform;

[0024] The lifting frame is provided with a slide rail, and the carrying platform is slidably arranged on the slide rail;

[0025] The second driving assembly is in driving connection with the carrying platform through the transmission assembly, and drives the carrying platform to slide on the slide rail.

[0026] Furthermore, the bearing platform is in an L-shaped structure;

[0027] Two bearing platforms are provided, and the two bearing platforms are arranged opposite to each other, and each bearing platform is correspondingly provided with the second driving assembly, the transmission assembly and the slide rail.

[0028] Furthermore, the walking device is an AGV vehicle.

[0029] Furthermore, it also includes a protective cover corresponding to the unwinding device, and the two unwinding devices are both arranged in the corresponding protective cover.

[0030] Another embodiment of the present invention further provides a battery production system, comprising the unwinding device described in any of the above embodiments.

[0031] Beneficial effects of the utility model:

[0032] The unwinding device provided by the utility model comprises: an unwinding device, a frame, a walking device and a lifting device; two unwinding devices are arranged, the two unwinding devices are arranged on the frame, and the two unwinding devices are arranged at intervals along the height direction of the frame; the walking device can move between the coil storage and the frame, and can transport coils for the two unwinding devices; the lifting device can carry the walking device and make the walking device move along the height direction of the frame.

[0033] By arranging two unwinding devices on the frame at intervals, the space occupied by the unwinding device can be reduced compared with the prior art, and the layout of the unwinding device is convenient. In addition, the walking device cooperates with the lifting device to transport the coil to the unwinding device, which can realize automatic roll change, reduce labor costs, and realize automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of an unwinding device provided in an embodiment of the utility model;

[0036] Figure 2 A schematic diagram of the structure of an unwinding device provided in an embodiment of the utility model;

[0037] Figure 3A schematic diagram of the structure of a cutter assembly provided in an embodiment of the utility model;

[0038] Figure 4 A schematic structural diagram of a lifting device provided in an embodiment of the utility model.

[0039] Icon: 1- rack; 11- column; 12- support plate;

[0040] 2-unwinding device; 21-turntable; 221-chuck; 222-first connecting member; 223-telescopic member; 224-second connecting member; 23-cutter assembly; 231-swing arm; 232-pressing roller; 233-pressing roller frame; 234-cutter; 235-cutter frame; 236-first driving member; 237-second driving member; 238-third driving member; 24-support assembly; 241-bottom plate; 242-vertical plate;

[0041] 3-lifting device; 31-lifting frame; 32-second driving assembly; 331-screw rod; 34-slide rail; 35-carrying platform. DETAILED DESCRIPTION

[0042] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0043] like Figures 1 to 4 As shown, an embodiment of the utility model provides an unwinding device, including: an unwinding device 2, a frame 1, a walking device and a lifting device 3; two unwinding devices 2 are provided, and the two unwinding devices 2 are both provided on the frame 1, and the two unwinding devices 2 are spaced apart along the height direction of the frame 1; the walking device can move between the coil storage and the frame 1, and can transport coils for the two unwinding devices 2; the lifting device 3 can carry the walking device and make the walking device move along the height direction of the frame 1.

[0044] The unwinding device provided in this embodiment is used for unwinding the coil. The coil can be formed by rolling up the foil of the lithium-ion battery mentioned above; optionally, the coil can also be formed by rolling up the pole piece or the powder coating layer. The unwinding device 2 is used for unwinding the coil, and the coil can be fixed in the unwinding device 2. There are two unwinding devices 2, corresponding to the positive electrode and the negative electrode of the lithium-ion battery respectively. The frame 1 is used to support the unwinding device 2, and the two unwinding devices 2 are both installed on the frame 1 and the two unwinding devices 2 are arranged at intervals up and down. The frame 1 includes a support plate 12 and a plurality of columns 11, one end of the column 11 is connected to the lower surface of the support plate 12, and the other end is used to be placed on the ground. The length of the column 11 needs to be greater than the height of the unwinding device 2, so that the lower unwinding device 2 is placed below the support plate 12, and the upper unwinding device 2 is installed on the upper surface of the support plate 12. The walking device is used to transport the coil to the unwinding device 2 on the frame 1 so that the unwinding device 2 can continue to unwind. Furthermore, in order to improve production efficiency, multiple walking devices are preferably provided. The walking device can enter the lifting device 3 and the lifting device 3 can raise the level of the walking device, so that the walking device can convey the coil to the unwinding device 2 above; and when the unwinding device 2 below is unable to match its height due to the setting of a structure such as a platform, the walking device can also cooperate with the lifting device 3 to convey the coil to the unwinding device 2 below.

[0045] The unwinding device provided in this embodiment can reduce the space occupied by the unwinding device and facilitate the arrangement of the unwinding device by arranging two unwinding devices 2 on the frame 1 at intervals in the upper and lower parts compared with the prior art. In addition, the walking device cooperates with the lifting device 3 to transport the coiled material to the unwinding device 2, which can realize automatic roll change, reduce labor costs, and realize automated production.

[0046] The unwinding device provided in the embodiment of the utility model is as follows Figure 1 and Figure 2 As shown, the unwinding device 2 includes a supporting assembly 24, a turntable 21, a fixing assembly and a first driving assembly; two turntables 21 are provided, and the two turntables 21 are both rotatably provided on the supporting assembly 24, and the first driving assembly is used to drive the two turntables 21 to rotate synchronously; each turntable 21 is provided with a plurality of groups of fixing assemblies, and all the fixing assemblies are arranged on the turntable 21 at intervals around the rotation center of the turntable 21; the fixing assemblies on the two turntables 21 correspond one to one, and the corresponding two groups of fixing assemblies are arranged relatively to fix the coiled materials.

[0047] In this embodiment, the support assembly 24 is used to support the turntable 21 and the cutter assembly 23 mentioned below. The support assembly 24 includes a bottom plate 241 and a vertical plate 242 connected to both sides of the bottom plate 241. The two vertical plates 242 are arranged opposite to each other. Each vertical plate 242 is provided with a through hole. Preferably, the through hole is located at the center of the vertical plate 242, and the through holes on the two vertical plates 242 are coaxially arranged and have the same size. The turntable 21 is a circular plate-like structure. The two turntables 21 can be connected by a connecting rod. The two turntables 21 are respectively arranged in two through holes, and the turntable 21 is rotated at the through hole by the rotation shaft arranged on the turntable 21 and the shaft seat arranged at the through hole. The coil can be fixed between the corresponding two groups of fixed assemblies, and multiple groups of fixed assemblies are arranged on each turntable 21. The fixed assemblies on the two turntables 21 correspond to each other, that is, the number and position of the fixed assemblies are the same; the corresponding two fixed assemblies are used to fix the coil. When in use, preferably, coils are fixed between every two groups of corresponding fixed components, so that one of the coils is in the unwinding state, while the other coils are in the standby state. When the unwinding of the coil is completed, since the turntable 21 can rotate, the coil in the standby state can be moved to the position of the coil just in the unwinding state by rotating the turntable 21 to continue unwinding, thereby ensuring that production can be carried out continuously and improving production efficiency. Usually, two groups of fixed components are provided on each turntable 21 to meet production needs. The first drive component is used to drive the turntable 21 to rotate. Preferably, the two turntables 21 can be connected by a structure such as a connecting rod. In this way, the first drive component does not need to be connected to the two turntables 21 at the same time, but only needs to be connected to one of the turntables 21 to drive the two turntables 21 to rotate synchronously.

[0048] Optionally, in this embodiment, the first drive assembly may be a reduction motor, or a hydraulic motor, etc. The first drive assembly may be directly connected to the rotating shaft of the turntable 21, or may be connected to the rotating shaft of the turntable 21 by means of a transmission belt and pulley transmission, a gear transmission, or a sprocket and chain transmission, so that the first drive assembly can drive the turntable 21 to rotate.

[0049] The unwinding device provided in the embodiment of the utility model is as follows Figure 2 As shown, the fixing assembly includes a clamp 221, a first connecting member 222 and a telescopic member 223; the clamps 221 of the corresponding two groups of fixing assemblies are arranged relatively to each other, the first connecting member 222 is slidably arranged on the corresponding turntable 21, one end of the first connecting member 222 is connected to the side of the clamp 221 away from the other clamp 221, and the other end is connected to the telescopic member 223, and the telescopic member 223 drives the first connecting member 222 to slide.

[0050] In the present embodiment, the telescopic member 223 can be a pneumatic cylinder, an oil cylinder or an electric cylinder. The telescopic member 223 has a cylinder end and a piston end. One end of the first connecting member 222 is connected to a chuck 221, which can extend into the winding core of the coil to fix the coil, and the other end of the first connecting member 222 is connected to the piston end of the telescopic member 223. Further, the first connecting member 222 is also slidably mounted on the turntable 21, and the first connecting member 222 can be a structure such as a slider. When in use, the cylinder end of the telescopic member 223 is fixed, and the telescopic end of the telescopic member 223 is controlled to be telescopic by the cylinder end of the telescopic member 223, thereby driving the first connecting member 222 to move, so that the two relative chucks 221 are close to or away from each other.

[0051] When in use, take two groups of fixing components set on each turntable 21 as an example. Coils are fixed between each two groups of fixing components, and one of the coils is in the unwinding state, and the other coil is in the standby state. When the coil in the use state is unwound, the turntable 21 rotates, the positions of the two coils are swapped, and the coil in the standby state is changed to the use state. At the unwinding coil, the fixing component used to fix it moves, specifically the telescopic member 223 controls the movement of the corresponding chuck 221, and the two chucks 221 move away from each other so that the chuck 221 leaves the winding core, and then the walking device transports the new spare coil to between the two chucks 221, and the telescopic member 223 controls the movement of the corresponding chuck 221 so that the two chucks 221 are close to each other, so that the chuck 221 is extended into the winding core of the new coil to fix the coil.

[0052] Preferably, in this embodiment, the fixing assembly further includes a second connecting member 224, which is used to connect the piston end of the telescopic member 223 and the end of the first connecting member 222 away from the chuck 221. In this way, when the telescopic member 223 is arranged, the cylinder end of the telescopic member 223 can be arranged toward the chuck 221, thereby reducing the occupied space of the unwinding device 2. The second connecting member 224 can also be a connecting plate, or an "8"-shaped structure with hoops at both ends.

[0053] It can be understood that, in this embodiment, the fixing component can also be a roller, and the purpose of fixing the coil in this embodiment can also be achieved by inserting the roller into the core of the coil.

[0054] The unwinding device provided by the embodiment of the utility model, the unwinding equipment 2 also includes a synchronization component arranged corresponding to the fixed component; the first connecting member 222 is a connecting shaft, and the connecting shaft is also rotatably arranged on the corresponding turntable 21, one end of the connecting shaft is fixedly connected to the chuck 221, and the other end rotates circumferentially between the telescopic member 223 and is axially fixed at the same time; the synchronization component connects the turntable 21 and the corresponding connecting shaft, and under the action of the synchronization component, when the turntable 21 rotates, the connecting shaft can drive the chuck 221 to rotate synchronously with the turntable 21.

[0055] In this embodiment, the first connecting member 222 is preferably a connecting shaft. A shaft sleeve is mounted on the connecting shaft, and the shaft sleeve is fixed on the turntable 21. The connecting shaft and the shaft sleeve can slide and rotate relative to each other, so that the connecting shaft can slide on the turntable 21 and the connecting shaft can rotate on the turntable 21. Optionally, the connecting shaft can be installed on the turntable 21 by opening a hole or a groove on the turntable 21. When the turntable 21 rotates to replace the coil, under the action of the synchronization component, the connecting shaft of the fixed component drives the chuck 221 to rotate synchronously, so as to avoid problems in the process of replacing the coil.

[0056] Optionally, in this embodiment, a synchronous wheel can be fixed on the connecting shaft, and a synchronous wheel can be set on the rotating shaft of the rotating disk 21, and the two synchronous wheels are connected by a synchronous belt, wherein the synchronous wheel on the rotating shaft of the rotating disk 21 is fixed and does not rotate with the rotating disk 21. In this way, when the rotating disk 21 rotates, under the action of the two synchronous wheels and the synchronous belt, the connecting shaft can drive the chuck 221 connected thereto and the foil fixed by the chuck 221 to rotate. It can be understood that the above two synchronous wheels can also be replaced by gears.

[0057] In this embodiment, it is mentioned above that the connecting shaft is installed on the turntable 21 through a bushing, so the connecting shaft and the bushing can slide and rotate, and correspondingly, the connecting shaft and the second connecting member 224 can also rotate relative to each other.

[0058] The unwinding device provided in the embodiment of the utility model is as follows Figure 2 and Figure 3 As shown, the unwinding device 2 also includes a cutter assembly 23; the cutter assembly 23 includes a swing arm 231, a pressure roller 232, a pressure roller frame 233, a cutter 234, a cutter frame 235, a first driving member 236, a second driving member 237 and a third driving member 238; the swing arm 231 is rotatably arranged on the support assembly 24, and the first driving member 236 is used to drive the swing arm 231 to rotate on the support assembly 24; one end of the pressure roller frame 233 is rotatably arranged on the swing arm 231, and the other end is provided with a pressure roller 232; one end of the cutter frame 235 is rotatably arranged on the swing arm 231, and the other end is provided with a cutter 234; the second driving member 237 is used to drive the pressure roller frame 233 to rotate on the swing arm 231; the third driving member 238 is used to drive the cutter frame 235 to rotate on the swing arm 231.

[0059] In this embodiment, the unwinding device 2 further includes a cutter assembly 23, which is arranged on the support assembly 24 and is used to cut the end of the unwinding coil and connect the end of the unwinding coil and the starting end of the coil that has just switched from the standby state to the unwinding state. Specifically, the swing arm 231 is a "door" type structure, one end of which is rotatably arranged between two vertical plates 242 through an axis. The first driving member 236 is connected to the swing arm 231 and drives the swing arm 231 to rotate to adjust the position of the swing arm 231. The pressure roller frame 233 is structured as two plates arranged opposite to each other, one end of the two plates is connected through an axis, and at the same time, the axis is also rotatably arranged on the swing arm 231, and the other end of the two plates is rotatably provided with a pressure roller 232. The structure of the cutter frame 235 is similar to that of the pressure roller frame 233, and one end is also rotatably arranged on the swing arm 231 through an axis, and the other end is provided with a cutter 234. The cutter 234 and the pressure roller 232 are arranged at intervals in the upper and lower parts, and the foil can pass through the cutter 234 and the pressure roller 232. The pressure roller frame 233 is driven to rotate by the second driving member 237, and the pressure roller 232 can approach the foil to press the end of the coil that has been unwound and the starting end of the coil that has just been switched from the standby state to the unwound state. It should be noted that the starting end of the coil that has just been switched from the standby state to the unwound state is coated with adhesive. The cutter frame 235 is driven to rotate by the third driving member 238, and the cutter 234 can approach the foil to cut the end of the coil that has been unwound.

[0060] In this embodiment, the first driving member 236 can be a motor, or a telescopic cylinder such as a pneumatic cylinder or an electric cylinder. In this embodiment, a telescopic cylinder is preferably used, which has the advantages of rapid response. One end of the telescopic cylinder is rotatably connected to the vertical plate 242 of the support assembly 24, and the other end is rotatably connected to the swing arm 231. The structure and arrangement of the second driving member 237 and the third driving member 238 can refer to the first driving member 236, so it is not repeated here.

[0061] The unwinding device provided in the embodiment of the utility model is as follows Figure 1 and Figure 4 As shown, the lifting device 3 includes a lifting frame 31, a second driving component 32, a transmission component and a carrying platform 35; a slide rail 34 is provided on the lifting frame 31, and the carrying platform 35 is slidably arranged on the slide rail 34; the second driving component 32 is connected to the carrying platform 35 through the transmission component, and drives the carrying platform 35 to slide on the slide rail 34.

[0062] In this embodiment, the lifting frame 31 is arranged beside the frame 1. The bearing platform 35 is provided with a slider matched with the slide rail 34, or a slide groove matched with the slide rail 34, so that the bearing platform 35 can be slidably installed on the slide rail 34 of the lifting frame 31. The walking device can drive onto the bearing platform 35, and the second driving assembly 32 drives the bearing platform 35 to slide on the slide rail 34 through the transmission assembly, thereby driving the walking device to rise and fall.

[0063] Optionally, in this embodiment, the second drive assembly 32 is a reduction motor, and the transmission assembly is a screw 331 and a screw nut. Among them, the screw 331 is rotatably arranged on the lifting frame 31 through the screw 331 seat, and the axial direction of the screw 331 is parallel to the extension direction of the slide rail 34. The reduction motor is connected to one end of the screw 331 through a coupling. The screw nut is fixed on the bearing platform 35, and the screw 331 is also arranged in the screw nut. When in use, the reduction motor drives the screw 331 to rotate, so that the screw nut on the screw 331 can move along the axial direction of the screw 331, and the bearing platform 35 connected to the screw nut moves accordingly.

[0064] It is understandable that in this embodiment, the second drive assembly 32 can also be an electric hoist, etc. It can also achieve the purpose of driving the bearing platform 35 to slide. When the second drive assembly 32 is a reduction motor, the transmission assembly can also be a gear rack combination, etc.

[0065] The unwinding device provided in the embodiment of the utility model is as follows Figure 4 As shown, the carrying platform 35 is in an L-shaped structure; two carrying platforms 35 are provided, and the two carrying platforms 35 are arranged opposite to each other, and each carrying platform 35 is correspondingly provided with the second driving component 32 , the transmission component and the slide rail 34 .

[0066] In this embodiment, the bearing platform 35 is L-shaped, that is, it includes a horizontal side and a vertical side. The horizontal side is used to bear the wheels of the walking device, and the vertical side is used to connect with the slide rail 34. Each bearing platform 35 is equipped with a second drive assembly 32 and a transmission assembly so that the two bearing platforms 35 can move synchronously. The bearing platform 35 is set to an L-shaped structure, which is convenient for maintenance, and the vertical side can also play a certain protective role.

[0067] It can be understood that in this embodiment, the lifting device 3 can also be a lifting device 3 such as a scissor lift set on the ground. Although it is more expensive and not convenient for layout, it can also achieve the purpose of driving the walking device to lift in this embodiment.

[0068] The unwinding device provided in the embodiment of the utility model is preferably a walking device of an AGV. The AGV, namely an automatic guided vehicle (AGV for short), has a built-in control program that can control its movement between upstream equipment and downstream equipment, has strong maneuverability, low cost, and is conducive to realizing automated production.

[0069] Optionally, in the present embodiment, the walking device may also be a cart, or a ground ox, etc., which can also achieve the purpose of conveying the coiled material in the present embodiment.

[0070] The unwinding device provided in the embodiment of the utility model preferably further includes a protective cover corresponding to the unwinding device 2, and the two unwinding devices 2 are both arranged in the corresponding protective cover.

[0071] In this embodiment, each unwinding device 2 is provided with a corresponding protective cover, and the protective cover is used to protect the unwinding device 2 and increase the service life of the unwinding device 2 .

[0072] Another embodiment of the present invention further provides a battery production system, comprising the unwinding device described in any of the above embodiments.

[0073] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0074] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An unwinding device, It is characterized in that include: Unwinding equipment (2), frame (1), walking equipment and lifting equipment (3); Two unwinding devices (2) are provided, and both unwinding devices (2) are provided on the frame (1), and the two unwinding devices (2) are provided at intervals along the height direction of the frame (1); The walking device is capable of moving between the coil storage and the frame (1), and is capable of conveying coils to the two unwinding devices (2); The lifting device (3) is capable of carrying the walking device and enabling the walking device to move along the height direction of the frame (1).

2. The unwinding device according to claim 1, It is characterized in that The unwinding device (2) comprises a supporting assembly (24), a rotating disk (21), a fixing assembly and a first driving assembly; Two rotating disks (21) are provided, and both rotating disks (21) are rotatably arranged on the supporting assembly (24), and the first driving assembly is used to drive the two rotating disks (21) to rotate synchronously; Each of the turntables (21) is provided with a plurality of groups of the fixing components, and all of the fixing components are arranged on the turntable (21) at intervals around the rotation center of the turntable (21); the fixing components on the two turntables (21) correspond to each other one by one, and the corresponding two groups of the fixing components are arranged opposite to each other and fix the coiled material.

3. The unwinding device according to claim 2, It is characterized in that The fixing assembly comprises a clamp (221), a first connecting member (222) and a telescopic member (223); The corresponding two groups of clamps (221) of the fixing components are arranged opposite to each other, and the first connecting member (222) is slidably arranged on the corresponding turntable (21). One end of the first connecting member (222) is connected to a side of the clamp (221) away from the other clamp (221), and the other end is connected to the telescopic member (223). The telescopic member (223) drives the first connecting member (222) to slide.

4. The unwinding device according to claim 3, It is characterized in that The unwinding device (2) further comprises a synchronization component arranged corresponding to the fixing component; The first connecting member (222) is a connecting shaft, which is also rotatably arranged on the corresponding rotating disk (21), one end of the connecting shaft is fixedly connected to the clamping head (221), and the other end rotates circumferentially with the telescopic member (223) while being axially fixed; The synchronization component connects the rotating disk (21) and the corresponding connecting shaft. Under the action of the synchronization component, when the rotating disk (21) rotates, the connecting shaft can drive the clamp (221) to rotate synchronously with the rotating disk (21).

5. The unwinding device according to claim 4, It is characterized in that The unwinding device (2) further comprises a cutter assembly (23); the cutter assembly (23) comprises a swing arm (231), a pressure roller (232), a pressure roller frame (233), a cutter (234), a cutter frame (235), a first driving member (236), a second driving member (237) and a third driving member (238); The swing arm (231) is rotatably mounted on the support assembly (24), and the first driving member (236) is used to drive the swing arm (231) to rotate on the support assembly (24); One end of the pressure roller frame (233) is rotatably mounted on the swing arm (231), and the other end is provided with the pressure roller (232); one end of the cutting knife frame (235) is rotatably mounted on the swing arm (231), and the other end is provided with the cutting knife (234); The second driving member (237) is used to drive the pressure roller frame (233) to rotate on the swing arm (231); and the third driving member (238) is used to drive the cutting knife frame (235) to rotate on the swing arm (231).

6. The unwinding device according to claim 1, It is characterized in that The lifting device (3) comprises a lifting frame (31), a second driving assembly (32), a transmission assembly and a bearing platform (35); The lifting frame (31) is provided with a slide rail (34), and the carrying platform (35) is slidably arranged on the slide rail (34); The second driving component (32) is connected to the carrying platform (35) through the transmission component, and drives the carrying platform (35) to slide on the slide rail (34).

7. The unwinding device according to claim 6, It is characterized in that The carrying platform (35) is in an L-shaped structure; Two bearing platforms (35) are provided, and the two bearing platforms (35) are arranged opposite to each other, and each bearing platform (35) is correspondingly provided with the second driving component (32), the transmission component and the slide rail (34).

8. The unwinding device according to claim 1, It is characterized in that The walking device is an AGV trolley.

9. The unwinding device according to claim 1, It is characterized in that It also comprises a protective cover corresponding to the unwinding device (2), and the two unwinding devices (2) are both arranged in the corresponding protective cover.

10. A battery production system, It is characterized in that It comprises an unwinding device as claimed in any one of claims 1 to 9.

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