Automatic tape splicing device

Abstract

An embodiment of the present invention provides an automatic tape splicing device, which includes a first unwinding assembly for releasing a first electrode tape; a second unwinding assembly, spaced apart from the first unwinding assembly, for releasing a second electrode tape; a tape-out structure, disposed between the first and second unwinding assemblies, wherein the tape-out structure and the first unwinding assembly, and the tape-out structure and the second unwinding assembly can move toward or away from each other, and the electrode tape is transported to a subsequent workstation via the tape-out structure; a flipping structure, disposed on the tape-out structure, for flipping the first or second electrode tape; and a cutting assembly, disposed on the tape-out structure, for severing the connection between the first electrode tape and the first unwinding assembly; or for severing the connection between the second electrode tape and the second unwinding assembly. This automatic tape splicing device can automatically complete the tape splicing process, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pole piece splicing, and in particular to an automatic splicing device. Background Art

[0002] During the battery winding process, when a roll of electrode tape is almost finished, a new roll of electrode tape needs to be connected to the nearly finished roll to ensure production progress. In existing technology, the tape splicing process is mostly automated. Although this represents a technological improvement over purely manual splicing, manual glue preparation is still required, and splicing efficiency needs to be further improved. Summary of the Invention

[0003] An embodiment of the present invention provides an automatic tape discharging structure, which can solve the problem of low efficiency of the semi-automatic tape splicing process in the prior art.

[0004] In an embodiment of the present invention, the automatic tape discharging structure includes:

[0005] A first unwinding assembly is used to place the pole piece tape roll and drive the pole piece tape roll to rotate to release the first pole piece tape;

[0006] A second unwinding assembly is provided separately from the first unwinding assembly, and is used to place the electrode tape roll and drive the electrode tape roll to rotate to release the second electrode tape;

[0007] A tape-out structure, the tape-out structure being arranged between the first unwinding assembly and the second unwinding assembly, and the tape-out structure and the first unwinding assembly being able to move closer to or farther away from each other, and the tape-out structure and the second unwinding assembly being able to move closer to or farther away from each other, and the electrode tape on the first unwinding assembly or the second unwinding assembly being transported to a subsequent workstation via the tape-out structure;

[0008] a turning structure, provided on the strip-out structure, for turning over the first pole piece strip or the second pole piece strip;

[0009] And a cutting assembly, which is arranged on the tape-out structure, is used to cut off the connection between the first electrode tape and the first unwinding assembly, so that when the second unwinding assembly and the tape-out structure are close to each other, the first electrode tape after being cut off can be turned over by the flipping structure and connected to the second electrode tape on the second unwinding assembly; or is used to cut off the connection between the second electrode tape and the second unwinding assembly, so that when the first unwinding assembly and the tape-out structure are close to each other, the second electrode tape after being cut off can be turned over by the flipping structure and connected to the first electrode tape on the first unwinding assembly.

[0010] As a further optional scheme of the automatic tape splicing device, the flipping structure includes a first flip roller, a second flip roller and a toggle shaft, the first flip roller and the second flip roller are arranged at intervals to form a flip roller group, the first pole piece belt or the second pole piece belt passes through the gap between the first flip roller and the second flip roller and is transported to a subsequent workstation; the flip roller group can be rotated under the drive of the second drive component, thereby twisting and flipping the first pole piece belt or the second pole piece belt clamped therein; the toggle shaft can be rotated around the flip roller group under the drive of the third drive component, and the toggle shaft can toggle the first pole piece belt or the second pole piece belt to flip it during the rotation process.

[0011] As a further optional solution of the automatic tape splicing device, the flip structure further includes a telescopic mechanism, which can drive the dial shaft to move axially, thereby avoiding the first pole piece tape or the second pole piece tape.

[0012] As a further optional solution of the automatic tape splicing device, the telescopic mechanism is configured as a pen-shaped cylinder, and the piston rod of the pen-shaped cylinder is fixedly connected to one end of the dial shaft.

[0013] As a further optional solution of the automatic tape splicing device, the automatic tape splicing device also includes a waste pushing component, which can push the used electrode tape roll off the unwinding component after the tape splicing is completed.

[0014] As a further optional solution for the automatic tape splicing device, the waste pushing assembly includes a pushing block and a pushing drive; the pushing block is sleeved on the unwinding shaft of the unwinding assembly, and the pushing drive can drive the pushing block to move axially along the unwinding shaft.

[0015] As a further optional solution of the automatic belt splicing device, the pushing drive member is configured as a cylinder.

[0016] As a further optional solution of the automatic tape splicing device, the tape output structure also includes guide rollers, which are arranged in pairs at intervals. The first pole piece tape or the second pole piece tape enters the subsequent workstation after passing through the interval between the guide rollers.

[0017] As a further optional solution of the automatic tape splicing device, the cutting assembly includes a single-piece cutter and a cutter driving member.

[0018] As a further optional solution for the automatic tape splicing device, the cutting assembly includes two groups; one is arranged between the tape output structure and the first unwinding assembly, for cutting the first electrode tape, and the other is arranged between the tape output structure and the second unwinding assembly, for cutting the second electrode tape.

[0019] The implementation of the present invention will have the following beneficial effects:

[0020] The tape-out structure, flipping structure, first unwinding assembly, second unwinding assembly and cutting assembly work together to complete the automatic splicing of battery electrode tapes, thereby turning the splicing work from semi-automatic to fully automatic, greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] in:

[0023] Figure 1 Schematic diagram of the overall structure of an automatic tape splicing device in one embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the specific structure of the tape output structure at a viewing angle in one embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the specific structure of the tape output structure in another perspective in one embodiment of the present invention;

[0026] Figures 4 to 13 Schematic diagram of the working process of the automatic tape splicing device in one embodiment of the present invention;

[0027] Description of main component symbols:

[0028] 10-base plate, 11-bearing, 12-slide rail;

[0029] 21-first unwinding assembly, 22-second unwinding assembly;

[0030] 30 - tape-out structure, 311 - flip roller, A - first flip roller, B - second flip roller, 312 - second drive assembly, 321 - toggle shaft, 322 - third drive assembly, 3221 - drive block, 33 - cutting assembly, 331 - single-piece cutter, 332 - cutter drive element, 34 - telescopic mechanism, 341 - pen-shaped cylinder, 342 - connecting rod, 35 - slider, 36 - connecting plate, 37 - disc, 371 - mounting seat, 38 - connecting block; 39 - first drive assembly;

[0031] 41-push block; 411-orientation axis; 42-push drive member;

[0032] 50-Guide roller. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] An embodiment of the present invention provides an automatic tape splicing device for solving the problem of low efficiency in the existing semi-automatic tape splicing process.

[0037] In the embodiments of the present invention, please refer to Figures 1 to 3 The automatic tape splicing device includes a first unwinding component 21, a second unwinding component 22, a tape output structure 30, a flipping structure and a cutting component 33; the first unwinding component 21, the second unwinding component 22, the tape output structure 30, the flipping structure and the cutting component 33 are all directly or indirectly arranged on the base plate 10.

[0038] The first unwinding assembly 21 is used to place the electrode tape roll and drive the electrode tape roll to rotate to release the first electrode tape; the second unwinding assembly 22 is separated from the first unwinding assembly 21 and is used to place the electrode tape roll and drive the electrode tape roll to rotate to release the second electrode tape; the tape output structure 30 is set between the first unwinding assembly 21 and the second unwinding assembly 22, and the tape output structure 30 and the first unwinding assembly 21 can move closer to or farther away from each other, and the tape output structure 30 and the second unwinding assembly 22 can move closer to or farther away from each other. This movement process of moving closer to or farther away from each other is controlled by the first driving assembly 39, and the electrode tape on the first unwinding assembly 21 or the second unwinding assembly 22 is output via the tape output structure Sent to the subsequent workstation; the flipping structure is arranged on the tape-out structure 30, for flipping the first electrode tape or the second electrode tape; the cutting assembly 33 is also arranged on the tape-out structure 30, for cutting off the connection between the first electrode tape and the first unwinding assembly 21, so that when the second unwinding assembly 22 and the tape-out structure 30 are close to each other, the first electrode tape after being cut off can be turned over by the flipping structure and connected to the second electrode tape on the second unwinding assembly 22; or for cutting off the connection between the second electrode tape and the second unwinding assembly 22, so that when the first unwinding assembly 21 and the tape-out structure 30 are close to each other, the second electrode tape after being cut off can be turned over by the flipping structure and connected to the first electrode tape on the first unwinding assembly 21.

[0039] In an embodiment of the present invention, the automatic splicing of the battery electrode strips is completed by using the strip output structure 30, the flipping structure, the first unwinding assembly 21, the second unwinding assembly 22 and the cutting assembly 33 to work together, thereby converting the splicing work from semi-automatic to fully automatic, greatly improving production efficiency.

[0040] In one embodiment, the flipping structure includes two flipping rollers 311 and a toggle shaft 321. The two flipping rollers 311 are respectively referred to as the first flipping roller A and the second flipping roller B for the convenience of description. The first flipping roller A and the second flipping roller B are arranged at intervals to form a flipping roller group. The first pole piece belt or the second pole piece belt passes through the gap between the first flipping roller A and the second flipping roller B and is transported to the subsequent workstation; the flipping roller group can rotate under the drive of the second driving component 312, thereby twisting and flipping the first pole piece belt or the second pole piece belt clamped therein; the toggle shaft 321 can rotate around the flipping roller group under the drive of the third driving component 322, and the toggle shaft 321 can toggle the first pole piece belt or the second pole piece belt to flip it during the rotation process.

[0041] In one operation scenario, the first unwinding assembly 21 and the second unwinding assembly 22 rotate in the same direction (both clockwise or both counterclockwise). Figures 4 to 13(Clockwise is taken as an example in the figure), the working process of the automatic tape splicing device is as follows. For the convenience of description, the following content is described with respect to the relative position relationships such as up, down, left, and right shown in the figure. It can be understood that these relative position relationships are not limitations on the scope of protection of the present invention.

[0042] In the initial state, please refer to Figure 4 The tape outlet structure 30 is located somewhere between the first unwinding assembly 21 and the second unwinding assembly 22. The electrode tape starts from the first unwinding assembly 21 and passes through the gap between the turning rollers to be sent out. When the electrode tape on the first unwinding assembly 21 is about to run out, please refer to Figure 5 The third driving assembly 322 drives the toggle shaft 321 to rotate downward around the flip roller assembly at a certain angle, thereby pulling the electrode strip to the cutting assembly 33. At this time, the electrode strip contacts the second flip roller B and the electrode strip is tensioned; please refer to Figure 6 After the cutting assembly 33 cuts off the electrode tape, the third driving assembly 322 continues to drive the toggle shaft 321 to rotate around the flip roller group at the required angle, thereby lifting the electrode tape upward around the second flip roller B, and the first driving assembly 39 drives the tape-out structure 30 or the second unwinding assembly 22 to move them close to each other until the second flip roller B is pressed against the second unwinding assembly 22. A new electrode tape has been placed on the second unwinding assembly 22 in advance, and adhesive is provided somewhere on the new electrode tape. After the second unwinding assembly 22 rotates a certain angle, the adhesive will stick the new electrode tape to the electrode tape that is about to be used up, and the tape splicing process is completed; please refer to Figure 7 At this time, the first drive component 39 drives the belt-out structure 30 or the second unwinding component 22 to reset, preparing for the next work process.

[0043] When the electrode tape on the second unwinding assembly 22 is about to run out, please refer to Figures 8 and 9 The second driving assembly 312 drives the flip roller group to rotate a certain angle, so that the second flip roller B rotates to the right side of the first flip roller A (opposite to the initial state), and the third driving assembly 322 drives the toggle shaft 321 to rotate downward by a certain angle, and the pole piece belt is tensioned; please refer to Figure 10 After the cutting assembly 33 cuts the electrode tape, the first driving assembly 39 drives the tape-out structure 30 or the first unwinding assembly 21 to move closer to each other until the second turning roller B is pressed against the first unwinding assembly 21; a new electrode tape has been placed on the first unwinding assembly 21 in advance, and adhesive is provided somewhere on the new electrode tape. After the first unwinding assembly 21 rotates a certain angle, the adhesive will stick the new electrode tape to the electrode tape that is about to be used up, and the tape splicing process is completed; thereafter, please refer to Figures 11 to 12 The first drive component 39 drives the belt delivery structure 30 or the first unwinding component 21 to reset, and the second drive component 312 drives the flip roller group to rotate a certain angle, so that the first flip roller A and the second flip roller B return to their initial positions, and a working cycle ends.

[0044] During the above-described operation, at the end of a working cycle, the first pole piece strip will block the reset path of the toggle shaft 321, requiring manual reset. Therefore, a closed loop cannot be formed between two working cycles. To enhance the automation level of the automatic strip splicing device, in a specific embodiment, the flipping structure further includes a telescopic mechanism 34 that can drive the toggle shaft 321 to move axially, thereby avoiding the first pole piece strip.

[0045] Following the above Figure 12 For the workflow in Figure 13 The telescopic mechanism 34 drives the toggle shaft 321 to extend or retract along the axial direction of the flip roller 311, thereby avoiding the pole piece tape. After the third drive assembly 322 drives the toggle shaft 321 to rotate a certain angle, the telescopic mechanism 34 drives the toggle shaft 321 to retract or extend, and the toggle shaft 321 returns to its initial position, completing its reset. The automatic tape splicing device can then enter the next working cycle.

[0046] In the process of processing and producing the electrode tape, the electrode tape wound from the first unwinding assembly 21 or the second unwinding assembly 22 enters the subsequent process after passing through the flip roller group. In the subsequent process, the electrode tape needs to be distinguished between the front and back sides. Therefore, in the process of gluing the electrode tape, the front and back sides also need to be distinguished. Therefore, in the process of splicing the tape from the second unwinding assembly 22 to the first unwinding assembly 21, the flip roller group needs to rotate a certain angle. Specifically, assuming that Figure 4 The left side of the middle pole piece tape is the positive side, and the right side is the negative side. Therefore, in the process of splicing from the first unwinding component 21 to the second unwinding component 22, the pole piece tape is glued by the negative side. Therefore, in the process of splicing from the second unwinding component 22 to the first unwinding component 21, it should also be glued by the negative side. Therefore, the pole piece tape needs to be flipped by rotating the flip roller group.

[0047] Furthermore, the production process of the electrode tape is a standard process, which determines that the way the electrode tape is wound on the electrode tape is fixed. Figures 4 to 13 In the embodiment, the pole piece belt is wound in such a way that the front side faces outward and the back side faces inward. Therefore, when the first unwinding assembly 21 and the second unwinding assembly 22 rotate in the clockwise direction, in the normal process of unwinding the pole piece belt (such as Figure 4 and Figure 7), the electrode tape can be discharged directly through the gap between the two turning rollers 311. However, if the winding method of the electrode tape remains unchanged, but the rotation directions of the two unwinding assemblies are set to different, then during the process of a certain unwinding assembly discharging the electrode tape, the electrode tape needs to be wound from the outer surface of the turning roller 311 of the unwinding assembly away from the electrode tape delivery into the gap between the two turning rollers 311, and then wound out from the outer surface of the other turning roller 311. In other words, the front and back sides of the electrode tape on a certain unwinding assembly are first turned over by the turning roller group before being delivered. In this case, the workflow also needs to be changed accordingly.

[0048] From the description of the above two paragraphs, it can be concluded that changes in factors such as the winding mode of the electrode tape and the rotation mode of the unwinding assembly will cause corresponding changes in the automatic tape splicing process. However, technical personnel in the relevant field can adaptively design different working solutions based on the design points in the above-mentioned work process, such as using the flip roller group and the toggle shaft 321 to flip the electrode tape, using the telescopic mechanism 34 to allow the toggle shaft 321 to avoid the electrode tape machine, and using the flip roller 311 to press the unwinding assembly and then rotating the unwinding assembly at a certain angle to glue the new and old electrode tapes. These solutions should also be considered to fall within the scope of protection of the present invention.

[0049] It is understandable that in the above-mentioned working process, the working time point of the first driving component 39 can be adaptively adjusted as needed, such as performing driving work while the dial shaft 321 rotates, etc., which will not be repeated here.

[0050] In one embodiment, the first unwinding assembly 21 and the second unwinding assembly 22 are fixedly connected to the base plate 10, the belt-out structure 30 is slidably connected to the base plate 10, and the first driving assembly 39 can drive the belt-out structure 30 to reciprocate between the first unwinding assembly 21 and the second unwinding assembly 22.

[0051] The advantage of adopting such an embodiment is that, compared with a solution in which the first unwinding assembly 21 or the second unwinding assembly 22 moves, a solution in which only the belt-out structure 30 moves can simplify the overall structure.

[0052] In a specific embodiment, a slide rail 12 is fixedly connected to the bottom plate 10 , and a slider 35 is fixedly connected to the belt-discharging structure 30 . The slider 35 is slidably connected to the slide rail 12 .

[0053] In a more specific embodiment, the first drive assembly 39 includes a first drive element and a synchronous belt, and the slider 35 is connected to the synchronous belt and clamps the belt body of the synchronous belt; the first drive element drives the slider 35 to reciprocate by driving the movement of the synchronous belt.

[0054] In a further specific embodiment, the first driving element is a stepping motor.

[0055] In order to enhance the degree of automation of the automatic tape splicing device, in one embodiment, the automatic tape splicing device further comprises a waste pushing assembly, which can push the used pole piece tape roll off the unwinding assembly after the tape splicing is completed.

[0056] In a specific embodiment, the waste pushing assembly includes a pushing block 41 and a pushing drive 42; the pushing block 41 is mounted on the unwinding shaft of the unwinding assembly, and the pushing drive 42 can drive the pushing block 41 to move axially along the unwinding shaft, thereby pushing off the used electrode tape roll.

[0057] In a more specific embodiment, the waste pushing assembly also includes a directional shaft 411, and a bearing 11 is correspondingly provided on the base plate 10. One end of several directional shafts 411 is fixedly connected to the pushing block 41, and the other end passes through the bearing 11; the pushing drive member 42 is configured as a cylinder, and one end of the piston rod of the cylinder is fixedly connected to the pushing block 41.

[0058] In some other specific embodiments, the waste pushing component can also be configured as a blowing device, a robotic arm, or other structures.

[0059] In one embodiment, the automatic tape splicing device further includes guide rollers 50 , which are arranged in pairs at intervals and on the delivery path of the electrode tape.

[0060] The advantage of providing the guide roller 50 is that the feeding direction of the electrode strip can be adjusted, so as to facilitate the connection with the components required for the subsequent processing flow.

[0061] In one embodiment, the cutting assembly 33 includes a single-piece cutter 331 and a cutter driving member 332 .

[0062] In a specific embodiment, the single-piece cutter 331 and the cutter drive 332 are set as two groups, one of which is set between the tape output structure and the first unwinding assembly for cutting the first electrode tape, and the other is set between the tape output structure and the second unwinding assembly for cutting the second electrode tape.

[0063] In a specific embodiment including a guide roller 50 and a single-piece cutter 331, the belt-out structure 30 further includes a connecting plate 36, which is used to be fixedly connected to the base plate 10; a mounting shaft is provided on the connecting plate 36, and the guide roller 50 is sleeved on the mounting shaft; the two flip rollers 311 are connected by a connecting block 38, and a rotating shaft is provided on the middle of the end face of the connecting block 38 facing away from the flip roller 311, and the second drive assembly 312 includes a synchronous belt and a motor, and an axial hole is also provided on the connecting plate 36, and the rotating shaft of the connecting block 38 passes through the axial hole and is connected to the motor through a synchronous belt; the flip roller group is arranged under the guide roller 50. One end of the mounting shaft extends from the guide roller 50, and the protruding part is fixedly connected to a disc 37. A mounting seat 371 is provided at the upper end of the disc 37, and a connecting column is also provided in the middle of the disc 37; the third driving assembly 322 includes a synchronous belt, a third motor and a driving block 3221, one end of the driving block 3221 is sleeved on the connecting column, and the other end is fixedly connected to the toggle shaft 321. The third driving assembly 322 drives the driving block 3221 to rotate around the connecting column through the synchronous belt, thereby controlling the rotation of the toggle shaft 321; the cutting assembly 33 is connected to the connecting plate 36 and is arranged below the flip roller group.

[0064] In a more specific embodiment, the cutter driving member 332 is configured as a cylinder, the cylinder is fixedly connected to the connecting plate 36, and the single-piece cutter 331 is fixedly connected to the piston column of the cylinder.

[0065] The advantage of setting up the connecting plate 36 is that it can make the modularity of the automatic belt-discharging structure higher. By removing the connecting plate 36, the flip roller 311, the guide roller 50, and the cutting assembly 33 can be connected to the bottom plate 10, making disassembly and assembly more convenient.

[0066] Returning to the setting scheme of the cutting assembly 33, in another embodiment, the cutting assembly 33 includes a movable blade, a stationary blade and a movable blade driving element. The movable blade driving element can drive the cutting surface of the movable blade to cooperate with the cutting surface of the stationary blade, thereby cutting the pole piece strip.

[0067] Since the solution of using a moving blade and a stationary blade to cut in coordination needs to consider the avoidance problem between the shifting shaft 321 and the moving blade or the stationary blade, as well as the setting position of the stationary blade during the design process, it may cause the overall structure to be complicated. However, practice has proved that when the pole piece strip is tensioned by the flip roller 311 and the shifting shaft 321, the single-piece cutter 331 is sufficient to produce a good cutting effect. Therefore, in practice, the solution of setting a single-piece cutter 331 is the preferred solution.

[0068] In one embodiment, the telescopic mechanism 34 is configured as a pen-shaped cylinder 341 , and a piston rod of the pen-shaped cylinder 341 is fixedly connected to one end of the dial shaft 321 .

[0069] In a more specific embodiment, the central axis of the pen-shaped cylinder 341 is arranged parallel to the central axis of the toggle shaft 321 , and one end of the piston rod of the pen-shaped cylinder 341 is fixedly connected to one end of the toggle shaft 321 by a connecting rod 342 .

[0070] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An automatic tape splicing device, characterized in that: include: A first unwinding assembly is used to place the pole piece tape roll and drive the pole piece tape roll to rotate to release the first pole piece tape; A second unwinding assembly is provided separately from the first unwinding assembly, and is used to place the electrode tape roll and drive the electrode tape roll to rotate to release the second electrode tape; A tape-out structure, the tape-out structure being arranged between the first unwinding assembly and the second unwinding assembly, and the tape-out structure and the first unwinding assembly being able to move closer to or farther away from each other, and the tape-out structure and the second unwinding assembly being able to move closer to or farther away from each other, and the electrode tape on the first unwinding assembly or the second unwinding assembly being transported to a subsequent workstation via the tape-out structure; a turning structure, provided on the strip-out structure, for turning over the first pole piece strip or the second pole piece strip; and a cutting assembly, provided on the strip-out structure, for cutting off the connection between the first electrode strip and the first unwinding assembly, so that when the second unwinding assembly and the strip-out structure are close to each other, the cut first electrode strip can be turned over by the turning structure and connected to the second electrode strip on the second unwinding assembly; or used to cut off the connection between the second electrode strip and the second unwinding assembly, so that when the first unwinding assembly and the tape outlet structure are close to each other, the cut second electrode strip can be turned over by the turning structure and connected to the first electrode strip on the first unwinding assembly; The flipping structure includes a first flipping roller, a second flipping roller and a toggle shaft. The first flipping roller and the second flipping roller are spaced apart to form a flipping roller group. The first pole piece belt or the second pole piece belt passes through the gap between the first flipping roller and the second flipping roller and is transported to a subsequent workstation. The flipping roller group can rotate under the drive of the second driving component, thereby twisting and turning the first pole piece belt or the second pole piece belt clamped therein. The toggle shaft can rotate around the flipping roller group under the drive of the third driving component. During the rotation process, the toggle shaft can toggle the first pole piece belt or the second pole piece belt to turn it over.

2. The automatic tape splicing device according to claim 1, characterized in that: The flip structure further includes a telescopic mechanism, which can drive the dial shaft to move axially, thereby avoiding the first pole piece band or the second pole piece band.

3. The automatic tape splicing device according to claim 2, characterized in that: The telescopic mechanism is configured as a pen-shaped cylinder, and a piston rod of the pen-shaped cylinder is fixedly connected to one end of the shifting shaft.

4. The automatic tape splicing device according to claim 1, characterized in that: It also includes a waste pushing assembly, which can push the used pole piece tape roll off the first unwinding assembly and the second unwinding assembly after the tape splicing is completed.

5. The automatic tape splicing device according to claim 4, characterized in that: The waste pushing assembly includes a pushing block and a pushing drive; the pushing blocks are respectively mounted on the unwinding shafts of the first unwinding assembly and the second unwinding assembly, and the pushing drive can drive the pushing block to move axially along the unwinding shaft.

6. The automatic tape splicing device according to claim 5, characterized in that: The push drive member is configured as a cylinder.

7. The automatic tape splicing device according to claim 1, characterized in that: The strip-out structure further includes guide rollers, which are arranged in pairs with intervals. The first pole piece strip or the second pole piece strip passes through the intervals between the guide rollers and enters a subsequent workstation.

8. The automatic tape splicing device according to claim 1, characterized in that: The cutting assembly includes a single-piece cutter and a cutter driving member.

9. The automatic tape splicing device according to claim 8, characterized in that: The cutting assembly includes two groups; one is arranged between the tape-out structure and the first unwinding assembly, for cutting the first electrode tape, and the other is arranged between the tape-out structure and the second unwinding assembly, for cutting the second electrode tape.

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