Material belt unwinding device and battery production line

Abstract

The utility model provides a material belt unwinding device and a battery production line, and the material belt unwinding device comprises a rack; the first unwinding roller and the second unwinding roller are oppositely arranged on the rack; and the belt connecting assembly is arranged on the rack and comprises a pressing roller mechanism, the pressing roller mechanism is provided with a belt connecting position located between the first unwinding roller and the second unwinding roller and an avoiding position staggered with the first unwinding roller and the second unwinding roller, and the pressing roller mechanism can move between the first unwinding roller and the second unwinding roller. According to the structure, belt splicing after material belt unwinding is completed is achieved through reciprocating movement of the pressing roller mechanism, and non-stop unwinding is achieved. Meanwhile, the material belt unwinding device does not need to be provided with a turret structure, the equipment size is reduced, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a material strip unwinding device and a battery production line. Background Art

[0002] During the battery production process, the material strip needs to be unwound and transferred to the downstream for processing. The unwinding equipment is usually equipped with multiple unwinding shafts. When the material strip on a certain unwinding shaft is unwound, the unwinding equipment needs to stop unwinding, connect the material strip on another unwinding shaft, and then resume unwinding. However, the start and stop of the unwinding equipment will lose a lot of production time, affect production efficiency and reduce output.

[0003] In order to solve this problem, some unwinding devices in the prior art are provided with a turret, on which a plurality of unwinding shafts are provided. When the material strip on the unwinding shaft at the unwinding station is unwound, the turret rotates, so that the unwinding shaft rotates to the loading station, and the unwinding shaft with the material roll placed at the loading station rotates to the unwinding station. The material strip is unwound without stopping by the continuous rotation of the turret.

[0004] However, in the above structure, on the one hand, the turret needs to rotate, which makes the equipment occupy a large space; on the other hand, the unwinding shafts of the unwinding station and the loading station are both on the turret. The moment of inertia is large when changing the roll, which requires a high load capacity of the turret drive mechanism, and the safety of the turret is poor during operation. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the turret-type material strip unwinding equipment in the prior art that it occupies a large space and has high requirements on the load capacity of the driving mechanism, thereby providing a material strip unwinding device and a battery production line.

[0006] The cam-type belt conveyor as claimed in claim 1, wherein the first and second rollers are provided with a plurality of rollers, each of which is provided with a plurality of rollers, each of which is provided with a plurality of rollers, each of which is provided with a plurality of rollers, each of which is provided with a plurality of rollers.

[0007] Optionally, the tape splicing assembly also includes a cutting mechanism, which moves synchronously with the pressure roller mechanism. After the pressure roller mechanism presses the material tape on the first unwinding roller onto the tape of the material tape on the second unwinding roller, the cutting mechanism cuts off the material tape on the first unwinding roller. After the pressure roller mechanism presses the material tape on the second unwinding roller onto the tape of the material tape on the first unwinding roller, the cutting mechanism cuts off the material tape on the second unwinding roller.

[0008] Optionally, the pressing roller mechanism comprises a first pressing roller and a second pressing roller which are arranged opposite to each other, the first pressing roller is arranged toward the second unwinding roller, and the second pressing roller is arranged toward the first unwinding roller.

[0009] Optionally, the cutting mechanism is located between the first pressing roller and the second pressing roller.

[0010] Optionally, the pressure roller mechanism includes a rotating frame and a pressure roller, and the pressure roller is arranged on the rotating frame. When the material strip on the first unwinding roller is finished unwinding, the rotating frame rotates to the first position so that the pressure roller faces the second unwinding roller. When the material strip on the second unwinding roller is finished unwinding, the rotating frame rotates to the second position so that the pressure roller faces the first unwinding roller.

[0011] Optionally, the first position and the second position are respectively located on two sides of the cutting mechanism.

[0012] Optionally, the belt connecting assembly also includes: a first linear drive mechanism, which is arranged on the frame, and the driving end of the first linear drive mechanism can move along the first direction from the first unwinding roller to the second unwinding roller; a second linear drive mechanism, which is arranged on the driving end of the first linear drive mechanism, and the driving end of the second linear drive mechanism can move along the second direction perpendicular to the first direction, wherein the pressing roller mechanism and the cutting mechanism are both arranged on the driving end of the second linear drive mechanism.

[0013] Optionally, the belt connecting assembly also includes a mounting frame, which is connected to the driving end of the second linear drive mechanism, and the pressure roller mechanism and the cutting mechanism are both arranged on the mounting frame. The cutting mechanism includes a third linear drive mechanism and a cutter, and the third linear drive mechanism is arranged on the mounting frame, and the cutter is connected to the driving end of the third linear drive mechanism.

[0014] Optionally, the frame includes a mounting plate, the first unwinding roller and the second unwinding roller are arranged on the first side of the mounting plate, the first linear drive mechanism and the second linear drive mechanism are arranged on the second side of the mounting plate, and an avoidance opening is arranged on the mounting plate, and the belt connecting assembly passes through the avoidance opening.

[0015] The utility model also provides a battery production line, comprising the above-mentioned material strip unwinding device.

[0016] The utility model has the following advantages:

[0017] By using the technical solution of the utility model, the material tape unwinding device unwinds the material tape, and the tape splicing assembly is in an avoidance position during the unwinding process to prevent interference with the material tape. When the material tape on the first unwinding roller is unwound, the pressing roller mechanism moves to the tape splicing position and abuts against the material tape on the first unwinding roller, and then the pressing roller mechanism moves toward the second unwinding roller and presses the material tape on the first unwinding roller onto the adhesive tape of the material tape on the second unwinding roller. When the material tape on the second unwinding roller is unwound, the pressing roller mechanism moves to the tape splicing position and abuts against the material tape on the second unwinding roller, and then the pressing roller mechanism moves toward the first unwinding roller and presses the material tape on the second unwinding roller onto the adhesive tape of the material tape on the first unwinding roller. In the above structure, the tape splicing after the material tape unwinding is completed is realized by the reciprocating movement of the pressing roller mechanism, that is, the unwinding is realized without stopping the machine. At the same time, the material tape unwinding device does not need to be provided with a turret structure, which reduces the volume of the equipment and eliminates safety hazards. Therefore, the technical solution of the utility model solves the defects of the turret-type material unwinding equipment in the prior art that it occupies a large space and has high requirements on the load capacity of the driving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 A schematic structural diagram of a first embodiment of a material strip unwinding device of the present invention is shown;

[0020] Figure 2 Shows Figure 1 A schematic diagram of the structure of the tape splicing assembly of the middle tape unwinding device (from the bottom side);

[0021] Figure 3 Shows Figure 2 The enlarged schematic diagram at A in the middle;

[0022] Figure 4 Shows Figure 1 Schematic diagram of process 1 of the middle tape unwinding device unwinding the tape;

[0023] Figure 5 Shows Figure 1 Schematic diagram of the second process of the middle tape unwinding device unwinding the tape;

[0024] Figure 6 Shows Figure 1 Schematic diagram of process three of the middle tape unwinding device unwinding the tape;

[0025] Figure 7 Shows Figure 1 Schematic diagram of process 4 of the middle tape unwinding device unwinding the tape;

[0026] Figure 8 Shows Figure 1 Schematic diagram of process 5 of the middle tape unwinding device unwinding the tape;

[0027] Fig. 9 Shows Figure 1 Schematic diagram of process 6 of the middle tape unwinding device unwinding the tape;

[0028] Fig.10 Shows Figure 1 Schematic diagram of process seven of the middle material tape unwinding device unwinding the material tape;

[0029] Fig.11 Shows Figure 1 A schematic diagram of the process eight of the middle material tape unwinding device unwinding the material tape;

[0030] Fig.12 A schematic structural diagram of a second embodiment of a material strip unwinding device according to the present invention is shown;

[0031] Fig.13 Shows Fig.12 A schematic diagram of the structure of the tape splicing assembly of the middle tape unwinding device (from the bottom side);

[0032] Fig.14 Shows Fig.13 The enlarged schematic diagram of point B in the middle;

[0033] Description of reference numerals:

[0034] 1. Material tape; 10. Frame; 11. Escape; 20. First unwinding roller; 30. Second unwinding roller; 40. Tape splicing assembly; 41. Pressing roller mechanism; 411. First pressing roller; 412. Second pressing roller; 413. Rotating frame; 414. Pressing roller; 42. Cutting mechanism; 421. Third linear drive mechanism; 422. Cutter; 43. First linear drive mechanism; 44. Second linear drive mechanism; 45. Mounting frame. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] 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 indirectly connected through an intermediate medium, or it can be the internal communication 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.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Embodiment 1

[0040] like Figures 1 to 3 As shown, a material tape unwinding device includes a frame 10, a first unwinding roller 20, a second unwinding roller 30, and a tape splicing assembly 40. The first unwinding roller 20 and the second unwinding roller 30 are arranged on the frame 10 relative to each other. The tape splicing assembly 40 is arranged on the frame 10, and the tape splicing assembly 40 includes a pressing roller mechanism 41, which has a tape splicing position located between the first unwinding roller 20 and the second unwinding roller 30, and a evasive position misaligned with the first unwinding roller 20 and the second unwinding roller 30. And the pressing roller mechanism 41 can move between the first unwinding roller 20 and the second unwinding roller 30.

[0041] Furthermore, when the unwinding of the material tape 1 on the first unwinding roller 20 is completed, the pressure roller mechanism 41 moves to the tape connecting position and abuts against the material tape 1 on the first unwinding roller 20, and moves toward the second unwinding roller 30 to press the material tape on the first unwinding roller 20 onto the adhesive tape of the material tape 1 on the second unwinding roller 30. When the unwinding of the material tape 1 on the second unwinding roller 30 is completed, the pressure roller mechanism 41 moves to the tape connecting position and abuts against the material tape 1 on the second unwinding roller 30, and moves toward the first unwinding roller 20 to press the material tape 1 on the second unwinding roller 30 onto the adhesive tape of the material tape 1 on the first unwinding roller 20.

[0042] By using the technical solution of this embodiment, the material tape unwinding device unwinds the material tape 1, and the tape splicing assembly 40 is in an avoidance position during the unwinding process to prevent interference with the material tape 1. When the material tape 1 on the first unwinding roller 20 is unwound, the pressing roller mechanism 41 moves to the tape splicing position and abuts against the material tape 1 on the first unwinding roller 20, and then the pressing roller mechanism 41 moves toward the second unwinding roller 30, and presses the material tape 1 on the first unwinding roller 20 onto the adhesive tape of the material tape 1 on the second unwinding roller 30. When the material tape 1 on the second unwinding roller 30 is unwound, the pressing roller mechanism 41 moves to the tape splicing position and abuts against the material tape 1 on the second unwinding roller 30, and then the pressing roller mechanism 41 moves toward the first unwinding roller 20, and presses the material tape 1 on the second unwinding roller 30 onto the adhesive tape of the material tape 1 on the first unwinding roller 20. In the above structure, the tape splicing after the unwinding of the material tape 1 is completed is realized by the reciprocating movement of the pressing roller mechanism 41, that is, the unwinding without stopping is realized. At the same time, the material strip unwinding device does not need to be provided with a turret structure, which reduces the size of the device and eliminates safety hazards. Therefore, the technical solution of this embodiment solves the defects of the turret-type material strip unwinding device in the prior art that it occupies a large space and has high requirements on the load capacity of the driving mechanism.

[0043] It should be noted that the material strip unwinding device in this embodiment is used in battery production, and the material strip 1 can be a positive electrode material strip, a negative electrode material strip or a separator material strip. Of course, the material strip unwinding device in this embodiment can be used in production lines in other fields that need to unwind material strips.

[0044] like Figure 1 As shown, the function of the rack 10 is to provide a mounting position and support for other parts. The rack 10 can be a vertical plate structure, a frame structure, a box structure, etc.

[0045] like Figure 1 As shown, the first unwinding roller 20 and the second unwinding roller 30 are both arranged on the frame 10, and the two are arranged in parallel. When the first unwinding roller 20 is unwinding, the second unwinding roller 30 can load the material, that is, the material roll is sleeved on the second unwinding roller 30. When the first unwinding roller 20 is about to finish unwinding, the tape splicing component 40 sticks the material tape 1 on the first unwinding roller 20 to the tape of the material tape 1 on the second unwinding roller 30, so as to achieve tape splicing, and then the material tape 1 on the second unwinding roller 30 can be switched to unwind. When the second unwinding roller 30 is unwinding, the first unwinding roller 20 can load the material, that is, the material roll is sleeved on the first unwinding roller 20. When the second unwinding roller 30 is about to finish unwinding, the tape splicing component 40 sticks the material tape 1 on the second unwinding roller 30 to the tape of the material tape 1 on the first unwinding roller 20, so as to achieve tape splicing, and then the material tape 1 on the first unwinding roller 20 can be switched to unwind.

[0046] like Figure 2 and Figure 3As shown, the tape splicing assembly 40 includes a pressing roller mechanism 41, which can move in two directions. One direction is the connecting direction of the first unwinding roller 20 and the second unwinding roller 30, that is, Figure 1 The X direction is shown, and the other direction is perpendicular to the line connecting the first unwinding roller 20 and the second unwinding roller 30, that is, Figure 1 Y direction shown.

[0047] Furthermore, when the pressing roller mechanism 41 moves in the Y direction, it can move between the above-mentioned tape connection position and the avoidance position. Furthermore, when the pressing roller mechanism 41 is in the tape connection position, it mostly overlaps with the first unwinding roller 20 and the second unwinding roller 30 in the Y direction. Therefore, when the pressing roller mechanism 41 is in the tape connection position, it can abut against the material tape 1 and drive the material tape 1 to move when it moves toward the X direction. When the pressing roller mechanism 41 is in the avoidance position, it is misaligned with the first unwinding roller 20 and the second unwinding roller 30 in the Y direction, that is, it does not interfere with the unwinding of the material tape.

[0048] In addition, by moving the pressing roller mechanism 41 in the X and Y directions, the pressing roller mechanism can also be switched between the two sides of the material strip.

[0049] Based on the above content, the process of changing the tape roll of the tape unwinding device of this embodiment is described below:

[0050] Process 1: Figure 4 As shown, when the material strip 1 on the first unwinding roller 20 is about to be unwound, the pressing roller mechanism 41 moves to the tape connection position and is located on the side of the material strip 1 on the first unwinding roller 20 that is away from the second unwinding roller 30, and at this time, the material strip 1 is loaded on the second unwinding roller 30;

[0051] Process 2: Figure 5 As shown, the pressing roller mechanism 41 moves toward the second unwinding roller 30 and drives the material strip 1 on the first unwinding roller 20 to move toward the second unwinding roller 30;

[0052] Process 3: Figure 6 As shown, the pressing roller mechanism 41 moves to abut against the material strip 1 on the second unwinding roller 30, and the material strip 1 on the first unwinding roller 20 is attached to the adhesive tape of the material strip 1 of the second unwinding roller 30;

[0053] Process 4: Figure 7 As shown, after the material tape 1 on the first unwinding roller 20 is attached to the adhesive tape of the material tape 1 on the second unwinding roller 30, the material tape 1 on the second unwinding roller 30 is switched to be unwound until the unwinding is completed;

[0054] Process 5: Figure 8As shown, when the material strip 1 on the second unwinding roller 30 is about to be unwound, the pressing roller mechanism 41 moves to the tape connection position and is located on the side of the material strip 1 on the second unwinding roller 30 away from the first unwinding roller 20, and at this time, the material strip 1 is loaded on the first unwinding roller 20;

[0055] Process 6: Fig. 9 As shown, the pressing roller mechanism 41 moves toward the first unwinding roller 20, and drives the material strip 1 on the second unwinding roller 30 to move toward the first unwinding roller 20;

[0056] Process 7: Fig.10 As shown, the pressing roller mechanism 41 moves to abut against the material strip 1 on the first unwinding roller 20, and the material strip 1 on the second unwinding roller 30 is attached to the adhesive tape of the material strip 1 of the first unwinding roller 20;

[0057] Process 8: Fig.11 As shown, after the material strip 1 on the second unwinding roller 30 is attached to the adhesive tape of the material strip 1 on the first unwinding roller 20, the material strip 1 on the first unwinding roller 20 is switched to be unwound until the unwinding is completed.

[0058] By repeating the above steps 1 to 8 repeatedly, the roll changing of the material strip unwinding device can be realized without stopping the machine, and the roll changing process only requires horizontal movement of the pressure roller mechanism 41 to complete, without the need to set up a turret.

[0059] like Figure 2 and Figure 3 As shown, in the technical solution of this embodiment, the tape splicing assembly 40 further includes a cutting mechanism 42, and the cutting mechanism 42 moves synchronously with the pressing roller mechanism 41. After the pressing roller mechanism 41 presses the material tape 1 on the first unwinding roller 20 onto the adhesive tape of the material tape 1 on the second unwinding roller 30, the cutting mechanism 42 cuts off the material tape 1 on the first unwinding roller 20, and after the pressing roller mechanism 41 presses the material tape 1 on the second unwinding roller 30 onto the adhesive tape of the material tape 1 on the first unwinding roller 20, the cutting mechanism 42 cuts off the material tape on the second unwinding roller 30.

[0060] Specifically, the function of the cutting mechanism 42 is to cut the material strip 1 after the strip is connected. The cutting mechanism 42 has an extended position and a retracted position. When the material strip 1 needs to be cut, the cutting mechanism 42 is in the extended position, and when the material strip 1 does not need to be cut, the cutting mechanism 42 is in the retracted position.

[0061] Furthermore, in the above-mentioned process three, after the material tape 1 on the first unwinding roller 20 is attached to the adhesive tape of the material tape 1 on the second unwinding roller 30 , the cutting mechanism 42 cuts the material tape 1 on the first unwinding roller 20 .

[0062] Furthermore, in the above-mentioned process seven, after the material tape 1 on the second unwinding roller 30 is attached to the adhesive tape of the material tape 1 on the first unwinding roller 20 , the cutting mechanism 42 cuts the material tape 1 on the second unwinding roller 30 .

[0063] like Figure 2 and Figure 3 As shown, in the technical solution of this embodiment, the pressing roller mechanism 41 includes a first pressing roller 411 and a second pressing roller 412 arranged opposite to each other, the first pressing roller 411 is arranged toward the second unwinding roller 30, and the second pressing roller 412 is arranged toward the first unwinding roller 20. Specifically, the first pressing roller 411 and the second pressing roller 412 are arranged opposite to each other, and their central axes are parallel. The first pressing roller 411 and the second pressing roller 412 move synchronously.

[0064] Furthermore, in the above-mentioned process two, the first pressure roller 411 drives the material strip 1 on the first unwinding roller 20 to move toward the second unwinding roller 30 , and in the above-mentioned process three, the first pressure roller 411 moves to abut against the material strip 1 on the second unwinding roller 30 .

[0065] Furthermore, in the above-mentioned process six, the second pressure roller 412 drives the material strip 1 on the second unwinding roller 30 to move toward the first unwinding roller 20 , and in the above-mentioned process seven, the second pressure roller 412 moves to abut against the material strip 1 on the first unwinding roller 20 .

[0066] Optionally, the cutting mechanism 42 is located between the first pressing roller 411 and the second pressing roller 412. And the blade of the cutting mechanism 42 is facing downward. Figure 6 As shown, after the first pressing roller 411 tightens the material strip 1 on the first unwinding roller 20, the cutting mechanism 42 can cut the material strip 1 on the first unwinding roller 20 downward. Fig.10 As shown, after the second pressing roller 412 tensions the material strip 1 on the second unwinding roller 30 , the cutting mechanism 42 can cut the material strip 1 on the first unwinding roller 20 downward.

[0067] like Figure 1 and Figure 2 As shown, the tape splicing assembly 40 further includes a first linear drive mechanism 43 and a second linear drive mechanism 44. The first linear drive mechanism 43 is disposed on the frame 10, and the driving end of the first linear drive mechanism 43 can move along the first direction X from the first unwinding roller 20 to the second unwinding roller 30; the second linear drive mechanism 44 is disposed on the driving end of the first linear drive mechanism 43, and the driving end of the second linear drive mechanism 44 can move along the second direction Y perpendicular to the first direction X. The pressing roller mechanism 41 and the cutting mechanism 42 are both disposed on the driving end of the second linear drive mechanism 44.

[0068] Specifically, the first linear drive mechanism 43 is fixed on the frame 10, and its driving end can move between the first unwinding roller 20 and the second unwinding roller 30. Since the second linear drive mechanism 44 is arranged on the driving end of the first linear drive mechanism 43, when the driving end of the first linear drive mechanism 43 moves, it can drive the second linear drive mechanism 44 as a whole (as well as the pressing roller mechanism 41 and the cutting mechanism 42 arranged on the driving end of the second linear drive mechanism 44) to move in the first direction.

[0069] Furthermore, since the pressing roller mechanism 41 and the cutting mechanism 42 are arranged on the driving end of the second linear driving mechanism 44 , when the driving end of the second linear driving mechanism 44 moves, it can drive the pressing roller mechanism 41 and the cutting mechanism 42 to move in the second direction.

[0070] Therefore, through the first linear drive mechanism 43 and the second linear drive mechanism 44, the pressing roller mechanism 41 and the cutting mechanism 42 can be arranged on the plane formed by the first direction and the second direction (i.e. Figure 1 The device can be flexibly moved on the XY plane (shown).

[0071] Optionally, the first linear drive mechanism 43 and the second linear drive mechanism 44 may be a screw-nut mechanism, a drive cylinder, a linear guide mechanism, etc., as long as they can perform linear driving.

[0072] like Figure 2 and Figure 3 As shown, in the technical solution of this embodiment, the tape splicing assembly 40 further includes a mounting frame 45. The mounting frame 45 is connected to the driving end of the second linear drive mechanism 44, and the pressing roller mechanism 41 and the cutting mechanism 42 are both arranged on the mounting frame 45. The cutting mechanism 42 includes a third linear drive mechanism 421 and a cutter 422, the third linear drive mechanism 421 is arranged on the mounting frame 45, and the cutter 422 is connected to the driving end of the third linear drive mechanism 421.

[0073] Specifically, when the material strip 1 needs to be cut, the driving end of the third linear drive mechanism 421 extends, so that the cutter 422 extends and cuts the material strip 1. When the material strip 1 does not need to be cut, the driving end of the third linear drive mechanism 421 retracts, so that the cutter 422 retracts and is in the retracted position.

[0074] like Figure 1 As shown, in the technical solution of this embodiment, the frame 10 includes a mounting plate, the first unwinding roller 20 and the second unwinding roller 30 are arranged on the first side of the mounting plate, the first linear drive mechanism 43 and the second linear drive mechanism 44 are arranged on the second side of the mounting plate, and an avoidance opening 11 is arranged on the mounting plate, and the belt connecting assembly passes through the avoidance opening 11.

[0075] Specifically, the mounting plate is vertically mounted, the first direction X is a horizontal direction, and the first direction X is parallel to the plane where the mounting plate is located. The second direction Y is a direction perpendicular to the plane where the mounting plate is located.

[0076] Further, from Figure 1 It can also be seen that the first side of the above-mentioned mounting plate is the outer side, and the second side is the inner side. The above-mentioned avoidance opening 11 is a long strip structure, and it extends along the first direction X. The first linear drive mechanism 43 is installed on the inner side of the mounting plate and is located at the lower side of the avoidance opening 11. The second linear drive mechanism 44 is installed on the inner side of the mounting plate, and the driving end of the second linear drive mechanism 44 is opposite to the avoidance opening 11.

[0077] Combination Figure 1 and Figure 2 Those skilled in the art can understand that when the driving end of the second linear drive mechanism 44 is extended, the pressing roller mechanism 41 and the cutting mechanism 42 are located at the outer side of the mounting plate, that is, at the belt connection position. When the driving end of the second linear drive mechanism 44 is retracted, the pressing roller mechanism 41 and the cutting mechanism 42 are located at the inner side of the mounting plate, that is, at the avoidance position.

[0078] Embodiment 2

[0079] like Figure 12 to Figure 14 As shown, the difference between the second embodiment of the material tape unwinding device according to the present application and the first embodiment described above is that the structure of the cutting mechanism 42 is different. Specifically, the pressure roller mechanism 41 in the second embodiment includes a rotating frame 413 and a pressure roller 414, and the pressure roller 414 is arranged on the rotating frame 413. When the material tape 1 on the first unwinding roller 20 is unwound, the rotating frame 413 rotates to the first position so that the pressure roller 414 faces the second unwinding roller 30. When the material tape 1 on the second unwinding roller 30 is unwound, the rotating frame 413 rotates to the second position so that the pressure roller 414 faces the first unwinding roller 20.

[0080] Combination Fig.13 and Fig.14 It can be seen that the pressing roller 414 can be rotated 180° under the drive of the rotating frame 413, so that the pressing roller 414 is switched between the first position and the second position.

[0081] In the second embodiment, in the above-mentioned process one to process four, the rotating frame 413 swings to make the pressure roller 414 in the first position, that is, toward the second unwinding roller 30, at which time the pressure roller 414 can drive the material strip 1 on the first unwinding roller 20 to move and abut against the second unwinding roller 30. In the above-mentioned process five to process eight, the rotating frame 413 swings to make the pressure roller 414 in the second position, that is, toward the first unwinding roller 20, at which time the pressure roller 414 can drive the material strip 1 on the second unwinding roller 30 to move and abut against the first unwinding roller 20.

[0082] Optionally, the rotating frame 413 includes a connecting plate, and a motor can be arranged on the mounting frame 45, the motor shaft of the motor is fixedly connected to one end of the connecting plate, thereby driving the rotating frame 413 to rotate, and the other end of the connecting plate is rotatably connected to the pressure roller 414. And both ends of the pressure roller 414 are provided with connecting plates.

[0083] like Fig.14 As shown, the first position and the second position are respectively located at two horizontal sides of the cutting mechanism 42. When the pressing roller 414 switches between the first position and the second position, it crosses the cutting mechanism 42 downward.

[0084] The present application also provides a battery production line, including the above-mentioned material strip unwinding device.

[0085] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A material tape unwinding device, It is characterized in that include: Frame (10); A first unwinding roller (20) and a second unwinding roller (30) are arranged opposite to each other on the frame (10); A belt splicing assembly (40) is arranged on the frame (10), the belt splicing assembly (40) comprises a pressure roller mechanism (41), the pressure roller mechanism (41) has a belt splicing position located between the first unwinding roller (20) and the second unwinding roller (30), and an avoidance position misaligned with the first unwinding roller (20) and the second unwinding roller (30), and the pressure roller mechanism (41) is movable between the first unwinding roller (20) and the second unwinding roller (30), When the material tape (1) on the first unwinding roller (20) is unwound, the pressing roller mechanism (41) moves to the tape connection position and abuts against the material tape (1) on the first unwinding roller (20), and moves toward the second unwinding roller (30) to press the material tape on the first unwinding roller (20) onto the adhesive tape of the material tape (1) on the second unwinding roller (30); when the material tape (1) on the second unwinding roller (30) is unwound, the pressing roller mechanism (41) moves to the tape connection position and abuts against the material tape (1) on the second unwinding roller (30), and moves toward the first unwinding roller (20) to press the material tape (1) on the second unwinding roller (30) onto the adhesive tape of the material tape (1) on the first unwinding roller (20).

2. The tape unwinding device according to claim 1, It is characterized in that The tape splicing assembly (40) further comprises a cutting mechanism (42), wherein the cutting mechanism (42) moves synchronously with the pressing roller mechanism (41), wherein after the pressing roller mechanism (41) presses the material tape (1) on the first unwinding roller (20) onto the adhesive tape of the material tape (1) on the second unwinding roller (30), the cutting mechanism (42) cuts off the material tape (1) on the first unwinding roller (20), and after the pressing roller mechanism (41) presses the material tape (1) on the second unwinding roller (30) onto the adhesive tape of the material tape (1) on the first unwinding roller (20), the cutting mechanism (42) cuts off the material tape on the second unwinding roller (30).

3. The tape unwinding device according to claim 2, It is characterized in that The pressing roller mechanism (41) comprises a first pressing roller (411) and a second pressing roller (412) which are arranged opposite to each other, wherein the first pressing roller (411) is arranged toward the second unwinding roller (30), and the second pressing roller (412) is arranged toward the first unwinding roller (20).

4. The tape unwinding device according to claim 3, It is characterized in that The cutting mechanism (42) is located between the first pressing roller (411) and the second pressing roller (412).

5. The tape unwinding device according to claim 2, It is characterized in that The pressure roller mechanism (41) comprises a rotating frame (413) and a pressure roller (414); the pressure roller (414) is arranged on the rotating frame (413); when the material strip (1) on the first unwinding roller (20) is finished unwinding, the rotating frame (413) rotates to a first position so that the pressure roller (414) faces the second unwinding roller (30); when the material strip (1) on the second unwinding roller (30) is finished unwinding, the rotating frame (413) rotates to a second position so that the pressure roller (414) faces the first unwinding roller (20).

6. The tape unwinding device according to claim 5, It is characterized in that The first position and the second position are respectively located on two sides of the cutting mechanism (42).

7. The tape unwinding device according to any one of claims 2 to 6, It is characterized in that The belt splicing assembly (40) further comprises: A first linear drive mechanism (43) is arranged on the frame (10), and a driving end of the first linear drive mechanism (43) is capable of moving along a first direction (X) from the first unwinding roller (20) to the second unwinding roller (30); A second linear drive mechanism (44) is arranged on a driving end of the first linear drive mechanism (43), and the driving end of the second linear drive mechanism (44) is capable of moving in a second direction (Y) perpendicular to the first direction (X). Wherein, the pressing roller mechanism (41) and the cutting mechanism (42) are both arranged on the driving end of the second linear driving mechanism (44).

8. The tape unwinding device according to claim 7, It is characterized in that The belt splicing assembly (40) further comprises a mounting frame (45), wherein the mounting frame (45) is connected to the driving end of the second linear drive mechanism (44), the pressing roller mechanism (41) and the cutting mechanism (42) are both arranged on the mounting frame (45), and the cutting mechanism (42) comprises a third linear drive mechanism (421) and a cutter (422), wherein the third linear drive mechanism (421) is arranged on the mounting frame (45), and the cutter (422) is connected to the driving end of the third linear drive mechanism (421).

9. The tape unwinding device according to claim 7, It is characterized in that The frame (10) comprises a mounting plate, the first unwinding roller (20) and the second unwinding roller (30) are arranged on a first side of the mounting plate, the first linear drive mechanism (43) and the second linear drive mechanism (44) are arranged on a second side of the mounting plate, and an escape opening (11) is arranged on the mounting plate, and the belt splicing assembly passes through the escape opening (11).

10. A battery production line, It is characterized in that It comprises a material strip unwinding device as claimed in any one of claims 1 to 9.

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