Cylindrical battery film machine

Abstract

The present invention discloses a cylindrical battery film covering machine, including a frame and a conveying device, a correction device, an insulating sheet pasting device, a film covering device and a film heat shrinking device installed on the frame. The conveying device is used to convey the cylindrical battery to each processing station. The correction device is used to correct the pole ears of the cylindrical battery conveyed by the conveying device. The insulating sheet pasting device is used to paste the insulating sheet on the cylindrical battery after the pole ears are corrected. The film covering device is used to cover the cylindrical battery with the insulating sheet pasted on it with a heat shrink film. The film heat shrinking device is used to heat the cylindrical battery with the heat shrink film, so that the heat shrink film is formed and wrapped around the cylindrical battery. The present invention can realize the automation of the whole process of the processes of correcting the pole ears of the cylindrical battery, pasting the insulating sheet, covering the heat shrink film, and heating and forming the heat shrink film covered on the cylindrical battery through the above structure, which not only improves the work efficiency, but also reduces the labor cost.

Description

Technical Field

[0001] The invention relates to the technical field of cylindrical battery casing films, and in particular to a cylindrical battery casing film machine. Background Art

[0002] As we all know, the outer shell of cylindrical batteries is mainly steel shell or aluminum shell. Therefore, in order to ensure that the metal contacts of the battery are not touched by metal and cause a short circuit, it is generally necessary to put a layer of heat shrink film on the outside of the battery to prevent the battery shell from being scratched or the battery from short circuiting.

[0003] The production process of cylindrical battery film includes the steps of straightening the tabs of the cylindrical battery, attaching the insulating sheet, attaching the heat shrink film, and heating the cylindrical battery with the heat shrink film. Most of the existing operations are to manually attach the insulating sheet and the heat shrink film to the cylindrical battery, and then put the cylindrical battery with the heat shrink film into a heating device for heating. However, this existing operation method is not only inefficient and increases labor costs, but also may fail to accurately attach the insulating sheet to the cylindrical battery due to misoperation.

[0004] Therefore, a cylindrical battery casing machine is urgently needed to solve the above problems. Summary of the invention

[0005] The present invention aims at solving the current technical deficiencies and provides a cylindrical battery film covering machine.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0007] A cylindrical battery film covering machine comprises a frame and a conveying device, a straightening device, an insulating sheet pasting device, a film covering device and a film heat shrinking device installed on the frame, wherein the straightening device, the insulating sheet pasting device, the film covering device and the film heat shrinking device are arranged in sequence along the length direction of the frame, the conveying device is used to convey the cylindrical battery to each processing station, the straightening device is used to straighten the tabs of the cylindrical battery conveyed by the conveying device, the insulating sheet pasting device is used to paste the insulating sheet on the cylindrical battery after the tabs are straightened, the film covering device is used to cover the cylindrical battery with the insulating sheet pasted with a heat shrinking film, and the film heat shrinking device is used to heat the cylindrical battery with the heat shrinking film, so that the heat shrinking film is formed and wraps the cylindrical battery.

[0008] As a further improvement, the correction device includes a mounting frame and a first roller row, a second roller row, a first linear drive device and a pressure wheel mounted on the mounting frame, the mounting frame is mounted on the frame, the conveying device is located below the mounting frame and passes through the mounting frame, the first roller row and the second roller row are arranged opposite to each other to form a correction space for correcting the pole ears of the cylindrical battery, the first linear drive device is located above the first roller row, and the pressure wheel is rotatably mounted on the output end of the first linear drive device and extends into or exits the correction space under the drive of the first linear drive device.

[0009] As a further improvement, the conveying device includes a conveyor belt, a placement table, a support rod and a fixing ring, the placement table is fixed on the conveyor belt, and the fixing ring is installed above the placement table through the support rod.

[0010] As a further improvement, a positioning platform is protruding upward on the top surface of the placement table, and a recessed portion is recessed downward on the top surface of the positioning table for pre-positioning the cylindrical battery. The recessed portion makes the direction of the pole ear end of the cylindrical battery placed therein non-vertically arranged with the direction of the correction space.

[0011] As a further improvement, the correction device also includes a positioning device installed on the frame and a clamping assembly for maintaining the correction state of the cylindrical battery, the clamping assembly is installed on the mounting frame, the clamping assembly is located behind the correction space along the conveying direction of the conveying device, there are at least two groups of the clamping assemblies, and the two groups of the clamping assemblies are arranged opposite to each other, and the positioning device is located below the clamping assembly.

[0012] As a further improvement, the insulating sheet sticking device includes a peeling mechanism for peeling off the insulating sheet and the release film and a sticking mechanism for sticking the peeled insulating sheet on the cylindrical battery. The stripping mechanism and the positioning device are arranged side by side along the width direction of the frame, and the sticking mechanism is located above the positioning device.

[0013] As a further improvement, the clamping assembly includes a second linear drive device and a clamping block, the second linear drive device is installed on the mounting frame, the clamping block includes a connecting portion for connecting to the output end of the second linear drive device and a clamping portion extending along the conveying direction of the conveying device, and the clamping portions of the two groups of the clamping assemblies are arranged opposite to each other.

[0014] As a further improvement, the film heat shrinkage device includes an inner shell, an outer shell, a rotating device, a centrifugal fan and a heating device, the outer shell and the inner shell are both installed on the frame, the inner shell and the conveyor belt together enclose a heating space for heating, the outer shell is located at the periphery of the inner shell, and a reflux space for air reflux heating is formed between the outer shell and the inner shell, an exhaust hole is provided at the top of the inner shell, an air supply hole is provided at the bottom of the side wall of the inner shell, the heating device and the centrifugal fan are both installed in the reflux space, the centrifugal fan is located above the exhaust hole, the rotating device is installed above the outer shell, and the output end of the rotating device extends into the reflux space and is connected to the centrifugal fan.

[0015] As a further improvement, the film heat shrinkage device also includes a first linear drive mechanism and a connecting plate, the outer shell and the inner shell are both installed on the connecting plate, the first linear drive mechanism is installed on the frame, and the output end of the first linear drive mechanism is connected to the connecting plate and drives the connecting plate to move along the height direction of the frame.

[0016] As a further improvement, the film heat shrinking device also includes a partition plate for dividing the reflow space into independent spaces along the conveying direction of the cylindrical battery, and the partition plate is installed in the reflow space.

[0017] Beneficial effects of the present invention: The cylindrical battery film covering machine of the present invention comprises a frame and a conveying device, a straightening device, an insulating sheet pasting device, a film covering device and a film heat shrinking device installed on the frame. The straightening device, the insulating sheet pasting device, the film covering device and the film heat shrinking device are arranged in sequence along the length direction of the frame. The conveying device is used to convey the cylindrical battery to each processing station. The straightening device is used to straighten the tabs of the cylindrical battery conveyed by the conveying device. The insulating sheet pasting device is used to paste the insulating sheet on the cylindrical battery after the tabs are straightened. The film covering device is used to cover the cylindrical battery with the insulating sheet pasted on it with a heat shrinking film. The film heat shrinking device is used to heat the cylindrical battery with the heat shrinking film so that the heat shrinking film is formed and wrapped around the cylindrical battery. The present invention can realize the automation of the whole process of straightening the tabs of the cylindrical battery, pasting the insulating sheet, covering the heat shrinking film and heating and forming the heat shrinking film covered on the cylindrical battery through the above structure, which not only improves the work efficiency but also reduces the labor cost.

[0018] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a cylindrical battery film covering machine of the present invention;

[0020] Figure 2It is a schematic diagram of the three-dimensional structure of the cylindrical battery tab correction device of the present invention;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of another angle of the cylindrical battery tab correction device of the present invention;

[0022] Figure 4 It is a schematic diagram of a three-dimensional structure of the placement table, the support rod and the fixing ring of the present invention;

[0023] Figure 5 It is a schematic diagram of a three-dimensional structure in which the anti-top-falling block, the fifth linear drive device, the elastic member, the sliding block and the fixed top-retaining member of the present invention are connected;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the insulating sheet sticking device of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the film heat shrinking device of the present invention;

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the film heat shrinking device of the present invention from another angle;

[0027] Fig. 9 It is a schematic diagram of a three-dimensional structure in which an outer shell, an inner shell, a rotating device, a centrifugal fan, a heating device and a partition plate are connected in the present invention;

[0028] Fig.10 It is a three-dimensional structural schematic diagram of the present invention in which the inner shell, the rotating device, the centrifugal fan, the heating device and the partition plate are connected and then part of the outer shell is removed.

[0029] In the figure: 100. Cylindrical battery film machine, 10. Frame, 20. Conveying device, 30. Alignment device, 31. Mounting frame, 32. First roller row, 33. Second roller row, 34. First linear drive device, 35. Pressing wheel, 30a. Alignment space, 36. Pressing assembly, 361. Second linear drive device, 362. Pressing block, 37. Third roller row, 38. Fourth roller row, 40. Positioning device, 41. First a positioning block, 42. a third linear drive device, 43. a second positioning block, 44. a fourth linear drive device, 50. an anti-falling top block, 60. a fifth linear drive device, 70. an elastic member, 80. a sliding block, 90. a fixed top member, 51. a rotating wheel, 21. a conveyor belt, 22. a placing table, 23. a supporting rod, 24. a fixing ring, 221. a positioning table, 222. a recessed portion, 3621. a connecting portion, 3622. a pressing portion , 210. Stripping mechanism, 220. Sticking mechanism, 230. Mounting seat, 240. Unwinding mechanism, 250. Rewinding mechanism, 260. Belt pulling mechanism, 270. Linear driving device, 280. Stripping plate, 261. Rotating device, 262. First rotating roller, 263. Second rotating roller, 290. Induction component, 291. First sensor, 292. Second sensor, 293. Sliding seat, 294. Third rotating roller, 200. Insulation sheet sticking device, 300. Film covering device, 400. Film heat shrinking device, 410. Inner shell, 420. Outer shell, 430. Rotating device, 440. Centrifugal fan, 450. Heating device, 460. First linear drive mechanism, 470. Connecting plate, 410a. Air extraction hole, 410b. Air delivery hole, 480. Temperature sensor, 490. Partition plate, 400a. Heating space, 400b. Reflux space. DETAILED DESCRIPTION

[0030] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0031] Please refer to Figures 1 to 10 The cylindrical battery film covering machine 100 of the present invention comprises a frame 10 and a conveying device 20, a straightening device 30, an insulating sheet pasting device 200, a film covering device 300 and a film heat shrinking device 400 installed on the frame 10. Among them, the straightening device 30, the insulating sheet pasting device 200, the film covering device 300 and the film heat shrinking device 400 are arranged in sequence along the length direction of the frame 10, the conveying device 20 is used to convey the cylindrical battery to each processing station, the straightening device 30 is used to straighten the tabs of the cylindrical battery conveyed by the conveying device 20, the insulating sheet pasting device 200 is used to paste the insulating sheet on the cylindrical battery after the tabs are straightened, the film covering device 300 is used to cover the cylindrical battery with the insulating sheet pasted with the heat shrinking film, and the film heat shrinking device 400 is used to heat the cylindrical battery with the heat shrinking film, so that the heat shrinking film is formed and wraps the cylindrical battery.

[0032] Please refer to Figures 2 to 5 The correction device 30 of the present invention includes a mounting frame 31 and a first roller row 32, a second roller row 33, a first linear drive device 34 and a clamping wheel 35 installed on the mounting frame 31. The mounting frame 31 is installed on the frame 10. The conveying device 20 is located below the mounting frame 31 and passes through the mounting frame 31. The first roller row 32 and the second roller row 33 are arranged opposite to each other to form a correction space 30a for correcting the tabs of the cylindrical battery. The first linear drive device 34 is located above the first roller row 32. The clamping wheel 35 is rotatably installed at the output end of the first linear drive device 34 and extends into or out of the correction space 30a under the drive of the first linear drive device 34.

[0033] Please continue to refer to Figures 2 to 5 The correction device 30 further includes a positioning device 40 mounted on the frame 10 and a clamping assembly 36 for maintaining the correction state of the cylindrical battery. The clamping assembly 36 is mounted on the mounting frame 31. The clamping assembly 36 is located behind the correction space 30a along the conveying direction of the conveying device 20. There are at least two groups of the clamping assembly 36, and the two groups of the clamping assembly 36 are arranged opposite to each other. The positioning device 40 is located below the clamping assembly 36. Specifically, the clamping assembly 36 includes a second linear drive device 361 and a clamping block 362. The second linear drive device 361 is mounted on the mounting frame 31. The clamping block 362 includes a connecting portion 3621 for connecting to the output end of the second linear drive device 361 and a clamping portion 3622 extending along the conveying direction of the conveying device 20. The clamping portions 3622 of the two groups of the clamping assemblies 36 are arranged opposite to each other. Therefore, in actual operation, the second linear drive device 361 drives the two clamping blocks 362 to approach each other to jointly limit the aligned cylindrical battery, thereby preventing the tabs of the cylindrical battery from shifting during the movement.

[0034] Please continue to refer to Figures 2 to 5 The alignment device 30 further includes a third roller row 37 and a fourth roller row 38 mounted on the mounting frame 31. The third roller row 37 is located below the first roller row 32, and the fourth roller row 38 is located below the second roller row 33. The third roller row 37 and the fourth roller row 38 are arranged opposite to each other. Therefore, in actual use, the third roller row 37 and the fourth roller row 38 can be used to limit the side wall of the cylindrical battery.

[0035] Please continue to refer to Figures 2 to 5The positioning device 40 includes a first positioning block 41, a third linear drive device 42, a second positioning block 43 and a fourth linear drive device 44. The third linear drive device 42 and the fourth linear drive device 44 are installed on the frame 10 in an opposite manner. The conveying device 20 is located between the third linear drive device 42 and the fourth linear drive device 44. The first positioning block 41 is installed at the output end of the third linear drive device 42, and the side of the first positioning block 41 facing the second positioning block 43 is a plane. The second positioning block 43 is installed at the output end of the fourth linear drive device 44, and the side of the second positioning block 43 facing the first positioning block 41 is V-shaped. Therefore, while the cylindrical battery after correction is limited by the clamping assembly 36, the cylindrical battery is clamped and fixed by the positioning device 40, so as to facilitate the operation of attaching the insulating sheet to the cylindrical battery at this position.

[0036] Please continue to refer to Figures 2 to 5 The correction device 30 also includes an anti-collapse block 50, a fifth linear drive device 60, an elastic member 70, a sliding block 80 and a fixed abutment 90. The fifth linear drive device 60 is installed on the frame 10, and the fixed abutment 90 is installed on the side of the fifth linear drive device 60. The sliding block 80 is installed on the top surface of the fifth linear drive device 60 and can slide along the width direction of the frame 10. The anti-collapse block 50 is installed at one end of the sliding block 80 and can slide along the length direction of the frame 10. One end of the elastic member 70 is connected to the anti-collapse block 50, and the other end of the elastic member 70 is connected to the sliding block 80 to always pull the anti-collapse block 50 toward the side away from the correction space 30a. The output end of the fifth linear drive device 60 is connected to the sliding block 80 so that one end of the anti-collapse block 50 moves toward the side close to the correction space 30a after being abutted by the fixed abutment 90. Specifically, a rotating wheel 51 for abutting against the fixed abutting member 90 is installed on one side of the anti-falling block 50 close to the fixed abutting member 90. Therefore, the fifth linear drive device 60 can drive the sliding block 80 to move in a direction away from the conveying device 20 so that the anti-falling block 50 is abutted by the fixed abutting member 90, so that the falling block moves in a direction close to the correction space 30a to abut the cylindrical battery at the positioning device 40, which can effectively prevent the cylindrical battery at the positioning device 40 from tilting forward due to being clamped and positioned.

[0037] Please continue to refer to Figures 2 to 5The conveying device 20 includes a conveyor belt 21, a placing platform 22, a support rod 23 and a fixing ring 24. The placing platform 22 is fixed on the conveyor belt 21, and the fixing ring 24 is installed above the placing platform 22 through the support rod 23. Specifically, a positioning platform 221 is convexly provided on the top surface of the placing platform 22, and a recessed portion 222 for pre-positioning of cylindrical batteries is recessed downward on the top surface of the positioning platform 221. The recessed portion 222 makes the direction of the pole ear end of the cylindrical battery placed therein non-vertically arranged with the direction of the correction space 30a. Therefore, through the setting of the positioning platform 221, the cylindrical battery has been pre-positioned when it is placed in the fixing ring 24, and then corrected by the first roller row 32 and the second roller row 33, avoiding the subsequent failure to correct due to incorrect placement of the cylindrical battery. For example, when the cylindrical battery is placed on the positioning platform 221 , the angle between the straight line where the tab of the cylindrical battery is located and the straight line where the correction space 30 a is located is between 0 degrees and 75 degrees, but not limited thereto.

[0038] Please refer to Figure 6 The insulating sheet pasting device 200 includes a peeling mechanism 210 for peeling off the insulating sheet and the release film and a pasting mechanism 220 for pasting the peeled insulating sheet on the cylindrical battery. The peeling mechanism 210 and the positioning device 40 are arranged side by side along the width direction of the frame 10, and the pasting mechanism 220 is located above the positioning device 40.

[0039] Please continue to refer to Figure 6 The stripping mechanism 210 includes a mounting seat 230 and an unwinding mechanism 240, a rewinding mechanism 250, a pulling mechanism 260, a linear driving device 270 and a stripping plate 280 mounted on the mounting seat 230. The unwinding mechanism 240 and the rewinding mechanism 250 are both rotatably mounted on the frame 10. The pulling mechanism 260 is used to pull the roll material tape on the unwinding mechanism 240. The linear driving device 270 is connected to the output end of the stripping plate 280 and drives the stripping plate 280 to approach or move away from the rewinding mechanism 250 to strip the insulating sheet and the release film. Specifically, the belt pulling mechanism 260 includes a rotating device 261, a first rotating roller 262 and a second rotating roller 263 installed on the mounting seat 230. The first rotating roller 262 and the second rotating roller 263 are both located between the unwinding mechanism 240 and the peeling plate 280. The output end of the rotating device 261 is connected to the first rotating roller 262 and drives the first rotating roller 262 to rotate; therefore, in the actual working process, the first rotating roller 262 and the second rotating roller 263 jointly clamp one end of the material belt, and then the rotating device 261 drives the first rotating roller 262 to rotate to drive the unwinding mechanism 240 to unwind the material.

[0040] Please continue to refer to Figure 6The insulating sheet attaching device 200 also includes a sensing component 290 for sensing the insulating sheet on the stripping plate 280 . The sensing component 290 is mounted on the mounting base 230 , and the sensing component 290 is located above the stripping plate 280 . The sensing component 290 is electrically connected to the linear driving device 270 . Preferably, the sensing component 290 includes a first sensor 291 for sensing the left and right sides of the insulating sheet and a second sensor 292 for sensing the front of the insulating sheet, and the first sensor 291 is located on both sides of the second sensor 292; therefore, the front edge of the insulating sheet on the stripping plate 280 can be detected by the second sensor 292, and when it is detected that the insulating sheet has moved into place, the second sensor 292 feeds back information to the linear drive device 270, and then the linear drive device 270 drives the stripping plate 280 to move a preset distance in the direction of the unwinding mechanism 240 to achieve the stripping of the insulating sheet and the release film; at the same time, the first sensor 291 can also be used to sense whether the pasting position of the insulating sheet on the release film is offset, so as to facilitate the subsequent collection of the insulating sheet that does not meet the pasting specifications and paste it on the waste board.

[0041] Please continue to refer to Figure 6 The insulating sheet sticking device 200 also includes a sliding seat 293 and a third rotating roller 294. The sliding seat 293 is slidably disposed on the mounting seat 230 and can slide freely along the height direction of the mounting seat 230. The third rotating roller 294 is rotatably mounted on the sliding seat 293. The sliding seat 293 is located between the stripping plate 280 and the winding mechanism 250 to press downward on the material strip to be wound; therefore, the third rotating roller 294 can make the sliding seat 293 always have a tendency to slide downward under the action of gravity. Therefore, when the stripping plate 280 moves toward the direction close to the unwinding mechanism 240, the sliding seat 293 will naturally move downward, thereby further driving the release film to move downward, so that the insulating sheet and the release film are peeled off.

[0042] Please refer to Figures 7 to 10The film heat shrink device 400 includes an inner shell 410, an outer shell 420, a rotating device 430, a centrifugal fan 440 and a heating device 450. The outer shell 420 and the inner shell 410 are both installed on the frame 10. The inner shell 410 and the conveyor belt 21 jointly enclose a heating space 400a for heating. The outer shell 420 is located at the periphery of the inner shell 410, and a reflow space 400b for air reflow heating is formed between the outer shell 420 and the inner shell 410. An exhaust hole 410a is opened at the top of the inner shell 410, and an air delivery hole 410b is opened at the bottom of the side wall of the inner shell 410. The heating device 450 and the centrifugal fan 440 are both installed in the reflow space 400b. The centrifugal fan 440 is located above the exhaust hole 410a. The rotating device 430 is installed above the outer shell 420, and the output end of the rotating device 430 extends into the reflow space 400b and is connected to the centrifugal fan 440. Specifically, air holes 410b are provided at the bottom of the side walls on both sides of the inner shell 410, and heating devices 450 are installed inside the side walls on both sides of the outer shell 420; therefore, uniform heating can be achieved on both sides of the cylindrical battery in the heating space 400a.

[0043] Please continue to refer to Figures 7 to 10 The film heat shrink device 400 further includes a first linear drive mechanism 460 and a connecting plate 470. The outer shell 420 and the inner shell 410 are both mounted on the connecting plate 470. The first linear drive mechanism 460 is mounted on the frame 10. The output end of the first linear drive mechanism 460 is connected to the connecting plate 470 and drives the connecting plate 470 to move along the height direction of the frame 10. Therefore, the outer shell 420 and the inner shell 410 can be driven to move in the height direction of the frame 10 at the same time by the first linear drive mechanism 460. Preferably, the film heat shrink device 400 further includes a temperature sensor 480 for detecting the temperature of the heating space 400a, but is not limited thereto.

[0044] As a further improvement, the film heat shrinking device 400 further includes a partition plate 490 for dividing the reflow space 400b into independent spaces along the conveying direction of the cylindrical battery, and the partition plate 490 is installed in the reflow space 400b; therefore, the heating space 400a can be set to a state of increasing temperature along the conveying direction of the cylindrical battery as needed, but is not limited to this.

[0045] Beneficial effects of the present invention: The cylindrical battery film covering machine 100 of the present invention includes a frame 10 and a conveying device 20, a correction device 30, an insulating sheet pasting device 200, a film covering device 300 and a film heat shrinking device 400 installed on the frame 10. The correction device 30, the insulating sheet pasting device 200, the film covering device 300 and the film heat shrinking device 400 are arranged in sequence along the length direction of the frame 10. The conveying device 20 is used to convey the cylindrical battery to each processing station. The correction device 30 is used to correct the tabs of the cylindrical battery conveyed by the conveying device 20. The insulating sheet pasting device 200 is used to paste insulating sheets on the cylindrical batteries after the tabs are corrected. The film covering device 300 is used to cover the cylindrical battery with the insulating sheet with a heat shrinking film. The film heat shrinking device 400 is used to heat the cylindrical battery with the heat shrinking film, so that the heat shrinking film is formed and wraps the cylindrical battery. The present invention can realize the automation of the whole process of the process of straightening the tabs of cylindrical batteries, attaching insulating sheets, covering heat shrink films, and heating and molding the heat shrink films covered on the cylindrical batteries through the above structure, which not only improves the work efficiency but also reduces the labor cost.

[0046] The present invention is not limited to the above-mentioned embodiments. Other cylindrical battery casing machines obtained by using the same or similar structures, devices, processes or methods as the above-mentioned embodiments of the present invention are within the protection scope of the present invention.

Claims

1. A cylindrical battery film machine, characterized in that: It comprises a frame and a conveying device, a correcting device, an insulating sheet pasting device, a film covering device and a film heat shrinking device installed on the frame, wherein the correcting device, the insulating sheet pasting device, the film covering device and the film heat shrinking device are arranged in sequence along the length direction of the frame, the conveying device is used to convey the cylindrical battery to each processing station, the correcting device is used to correct the tabs of the cylindrical battery conveyed by the conveying device, the insulating sheet pasting device is used to paste the insulating sheet on the cylindrical battery after the tabs are corrected, the film covering device is used to cover the cylindrical battery with the insulating sheet pasted with a heat shrinking film, and the film heat shrinking device is used to heat the cylindrical battery with the heat shrinking film, so that the heat shrinking film is formed and wraps the cylindrical battery; The correction device comprises a mounting frame and a first roller row, a second roller row, a first linear drive device and a clamping wheel mounted on the mounting frame, the mounting frame is mounted on the frame, the conveying device is located below the mounting frame and passes through the mounting frame, the first roller row and the second roller row are arranged opposite to each other to form a correction space for correcting the tabs of the cylindrical battery, the first linear drive device is located above the first roller row, the clamping wheel is rotatably mounted on the output end of the first linear drive device and extends into or exits the correction space under the drive of the first linear drive device; The conveying device comprises a conveyor belt, a placing table, a support rod and a fixing ring, wherein the placing table is fixed on the conveyor belt, and the fixing ring is installed above the placing table through the support rod; The top surface of the placement platform is provided with a positioning platform protruding upward, and the top surface of the positioning platform is recessed downward to form a recessed portion for pre-positioning the cylindrical battery, wherein the recessed portion allows the direction of the tab end of the cylindrical battery placed therein to be arranged non-vertically with the direction of the correction space; The correction device also includes a positioning device installed on the frame and a clamping assembly for maintaining the correction state of the cylindrical battery. The clamping assembly is installed on the mounting frame. The clamping assembly is located behind the correction space along the conveying direction of the conveying device. There are at least two groups of clamping assemblies, and the two groups of clamping assemblies are arranged opposite to each other. The positioning device is located below the clamping assembly.

2. The cylindrical battery film covering machine according to claim 1, characterized in that: The insulating sheet pasting device includes a stripping mechanism for stripping the insulating sheet and the release film and a pasting mechanism for pasting the stripped insulating sheet on the cylindrical battery. The stripping mechanism and the positioning device are arranged side by side along the width direction of the frame, and the pasting mechanism is located above the positioning device.

3. The cylindrical battery film covering machine according to claim 1, characterized in that: The clamping assembly includes a second linear drive device and a clamping block. The second linear drive device is installed on the mounting frame. The clamping block includes a connecting portion for connecting to the output end of the second linear drive device and a clamping portion extending along the conveying direction of the conveying device. The clamping portions of the two groups of the clamping assemblies are arranged opposite to each other.

4. The cylindrical battery film covering machine according to claim 3, characterized in that: The film heat shrink device includes an inner shell, an outer shell, a rotating device, a centrifugal fan and a heating device. The outer shell and the inner shell are both installed on the frame. The inner shell and the conveyor belt jointly enclose a heating space for heating. The outer shell is located at the periphery of the inner shell, and a reflow space for air reflow heating is formed between the outer shell and the inner shell. An exhaust hole is provided at the top of the inner shell, and an air supply hole is provided at the bottom of the side wall of the inner shell. The heating device and the centrifugal fan are both installed in the reflow space. The centrifugal fan is located above the exhaust hole. The rotating device is installed above the outer shell, and the output end of the rotating device extends into the reflow space and is connected to the centrifugal fan.

5. The cylindrical battery film covering machine according to claim 4, characterized in that: The film heat shrinking device also includes a first linear drive mechanism and a connecting plate. The outer shell and the inner shell are both installed on the connecting plate. The first linear drive mechanism is installed on the frame. The output end of the first linear drive mechanism is connected to the connecting plate and drives the connecting plate to move along the height direction of the frame.

6. The cylindrical battery film covering machine according to claim 4, characterized in that: The film heat shrinking device further includes a partition plate for partitioning the reflow space into independent spaces along the conveying direction of the cylindrical battery, and the partition plate is installed in the reflow space.

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