Automatic roll changing and belt connecting device and lithium battery production system

Abstract

The embodiment of the utility model provides an automatic roll changing and belt connecting device and a lithium battery production system, and relates to the field of battery cell manufacturing. The automatic roll changing and tape splicing device comprises a first material roller, a second material roller, a tape tearing mechanism, a tape pulling mechanism and a tape splicing and gluing mechanism, the first material roller and the second material roller are arranged in a spaced mode, the adhesive tearing mechanism, the tape pulling mechanism and the tape connecting and adhering mechanism are all arranged between the first material roller and the second material roller, the first material roller and the second material roller are used for conveying a material tape, and the adhesive tearing mechanism is used for being close to the first material roller or the second material roller to conduct adhesive tearing operation. The belt pulling mechanism is used for pulling the material belt to be close to the belt connecting mechanism, and the belt connecting and gluing mechanism is used for conducting belt connecting and gluing operation on the material belt. During operation, when the material belts on the two material rollers need to be connected, the adhesive tearing mechanism, the belt pulling mechanism and the belt connecting and gluing mechanism can sequentially carry out adhesive tearing operation, belt pulling operation and belt connecting and gluing operation, existing manual roll changing is replaced, the labor intensity is reduced, and meanwhile the labor efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery cell manufacturing, and more particularly to an automatic roll changing and tape connecting device and a lithium battery production system. Background Art

[0002] During the production process of lithium batteries, it is usually necessary to change the roll of the tape to ensure that the tape has sufficient elongation. In the prior art, most of the operations are manual, which leads to the problems of high labor intensity and low labor efficiency. Summary of the Utility Model

[0003] The utility model provides an automatic roll changing and tape connecting device and a lithium battery production system, which can reduce the labor intensity during the roll changing operation and improve the labor efficiency.

[0004] Embodiments of the utility model can be implemented as follows:

[0005] Embodiments of the utility model provide an automatic roll changing and tape connecting device, which includes:

[0006] A first material roll, a second material roll, a tape tearing mechanism, a tape pulling mechanism, and a tape connecting and gluing mechanism;

[0007] Wherein, the first material roll and the second material roll are arranged at intervals, the tape tearing mechanism, the tape pulling mechanism, and the tape connecting and gluing mechanism are all arranged between the first material roll and the second material roll, the first material roll and the second material roll are respectively used for transporting the tape, the tape tearing mechanism is used for performing tape tearing operation close to the first material roll or the second material roll, the tape pulling mechanism is used for pulling the tape close to the tape connecting mechanism, and the tape connecting and gluing mechanism is used for performing tape connecting and gluing operation on the tape.

[0008] Optionally, the tape tearing mechanism includes a tape tearing support, a moving bracket, and a tape tearing suction cup, the moving bracket is slidably arranged on the tape tearing support to be close to the first material roll or the second material roll, and the tape tearing suction cup is arranged on the moving bracket and used for abutting against and attracting the tape.

[0009] Optionally, the tape tearing mechanism further includes a first buffer member, and the first buffer member is connected between the tape tearing suction cup and the moving bracket.

[0010] Optionally, the tape tearing mechanism further includes a tape guiding swing rod, the tape guiding swing rod is movably arranged on the moving bracket, and the end of the tape guiding swing rod is used for supporting the tape.

[0011] Optionally, the tape tearing mechanism further includes a tape tearing sensor, and the tape tearing sensor is rotatably arranged on the moving bracket.

[0012] Optionally, the tape pulling mechanism includes a tape pulling support, a first tape pulling slider, a second tape pulling slider, and a tape pulling suction cup. The first tape pulling slider is slidably disposed on the tape pulling support along a first direction. The second tape pulling slider is slidably disposed on the first tape pulling slider along a second direction. The tape pulling suction cup is rotatably disposed on the second tape pulling slider, and the tape pulling suction cup is used to abut and attract the tape.

[0013] Optionally, the tape connecting and gluing mechanism includes a first operation module and a second operation module which are oppositely arranged;

[0014] The first operation module includes a first mounting plate and a first tape receiving plate. The first tape receiving plate is movably connected to the first mounting plate, and at least two first tape suction ports are arranged on the first tape receiving plate;

[0015] The second operation module includes a second mounting plate, a second tape receiving plate, a pressing block, and a first cutter. The second tape receiving plate is movably connected to the second mounting plate. The pressing block and the first cutter are both connected to the same side of the second tape receiving plate, and a second tape suction port is arranged on the other side of the second tape receiving plate.

[0016] Optionally, the tape connecting and gluing mechanism further includes two glue preparation modules. The glue preparation module includes a glue preparation disk, a tape wrapping device, and a second cutter. The glue preparation disk is used to support the tape. The tape wrapping device is used to pull the tape. The second cutter is used to cut off the tape.

[0017] Optionally, the automatic roll changing and tape connecting device further includes a waste box, and the waste box is arranged below the tape tearing mechanism, the tape pulling mechanism, and the tape connecting and gluing mechanism.

[0018] An embodiment of the present invention further provides a lithium battery production system, including an automatic roll changing and tape connecting device.

[0019] The beneficial effects of the automatic roll changing and tape connecting device and the lithium battery production system according to the embodiments of the present invention include, for example:

[0020] The automatic roll changing and tape splicing device includes a first material roll, a second material roll, a glue tearing mechanism, a tape pulling mechanism, and a tape splicing and gluing mechanism. Among them, the first material roll and the second material roll are arranged at intervals. The glue tearing mechanism, the tape pulling mechanism, and the tape splicing and gluing mechanism are all arranged between the first material roll and the second material roll. The first material roll and the second material roll are respectively used for transporting the tape. The glue tearing mechanism is used to perform glue tearing operations near the first material roll or the second material roll. The tape pulling mechanism is used to pull the tape close to the splicing mechanism. The tape splicing and gluing mechanism is used to perform tape splicing and gluing operations on the tape. During the operation, when it is necessary to splice the tapes on the two material rolls, the glue tearing mechanism, the tape pulling mechanism, and the tape splicing and gluing mechanism can perform glue tearing operations, tape pulling operations, and tape splicing and gluing operations in sequence, replacing the existing manual roll changing, reducing the labor intensity and improving the labor efficiency at the same time.

[0021] The lithium battery production system includes an automatic roll changing and tape splicing device, which has all the functions of the automatic roll changing and tape splicing device. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the automatic roll changing and tape splicing device provided in the embodiments of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the glue tearing mechanism provided in the embodiments of the present invention from the first perspective;

[0025] Figure 3 It is a schematic structural diagram of the glue tearing mechanism provided in the embodiments of the present invention from the second perspective;

[0026] Figure 4 It is a schematic structural diagram of the tape pulling mechanism provided in the embodiments of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the first operation module provided in the embodiments of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the second operation module provided in the embodiments of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the glue preparation module provided in the embodiments of the present invention;

[0030] Figure 8 The working schematic diagram of the automatic roll changing and tape splicing device provided in the embodiment of the present utility model Figure 1 ;

[0031] Figure 9 The working schematic diagram of the automatic roll changing and tape splicing device provided in the embodiment of the present utility model Figure 2 ;

[0032] Figure 10 The working schematic diagram of the automatic roll changing and tape splicing device provided in the embodiment of the present utility model Figure 3 ;

[0033] Figure 11 The working schematic diagram of the automatic roll changing and tape splicing device provided in the embodiment of the present utility model Figure 4 ;

[0034] Figure 12 The working schematic diagram of the automatic roll changing and tape splicing device provided in the embodiment of the present utility model Figure 5 .

[0035] Icon: 100 - Automatic roll changing and tape splicing device; 110 - First material roll; 120 - Second material roll; 130 - Glue tearing mechanism; 131 - Glue tearing support; 132 - Moving bracket; 133 - Glue tearing suction cup; 134 - First buffer; 135 - Tape guiding swing rod; 136 - Glue tearing sensor; 140 - Tape pulling mechanism; 141 - Tape pulling support; 142 - First tape pulling slide; 143 - Second tape pulling slide; 144 - Tape pulling suction cup; 150 - Tape splicing and gluing mechanism; 151 - First operation module; 1511 - First mounting plate; 1512 - First material receiving plate; 1513 - First material suction port; 152 - Second operation module; 1521 - Second mounting plate; 1522 - Second material receiving plate; 1523 - Second material suction port; 1524 - Pressing block; 1525 - First cutting knife; 1526 - Second buffer; 155 - Glue preparation module; 156 - Glue preparation tray; 157 - Tape wrapping device; 158 - Second cutting knife; 160 - Waste box; 170 - Detection sensor. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0037] Accordingly, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0038] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, it is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0040] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0042] Unless otherwise clearly defined and limited, terms such as "arranged", "connected", etc. shall be understood in a broad sense. For example, "connected" 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 an indirect connection through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0044] Please refer to Figure 1The automatic roll-changing and tape-splicing device 100 and the lithium battery production system provided in the embodiment of the utility model can solve the above-mentioned problems, which will be described in detail below.

[0045] The automatic roll-changing and tape-splicing device 100 includes a first material roller 110, a second material roller 120, a glue-tearing mechanism 130, a tape-pulling mechanism 140, and a tape-splicing gluing mechanism 150; wherein the first material roller 110 and the second material roller 120 are spaced apart, the glue-tearing mechanism 130, the tape-pulling mechanism 140, and the tape-splicing gluing mechanism 150 are all arranged between the first material roller 110 and the second material roller 120, the first material roller 110 and the second material roller 120 are respectively used to transmit the material tape, the glue-tearing mechanism 130 is used to approach the first material roller 110 or the second material roller 120 for glue-tearing operations, the tape-pulling mechanism 140 is used to pull the material tape close to the tape-splicing mechanism, and the tape-splicing gluing mechanism 150 is used to perform tape-splicing and gluing operations on the material tape.

[0046] During the operation, when it is necessary to splice the material tapes on the two material rollers, the glue tearing mechanism 130, the tape pulling mechanism 140 and the tape splicing and gluing mechanism 150 can perform the glue tearing operation, the tape pulling operation and the tape splicing and gluing operation in sequence, replacing the existing manual roll changing, reducing labor intensity and improving labor efficiency.

[0047] It is worth noting that detection sensors 170 are respectively provided on the upper sides of the two material rollers for real-time detection of the number of material rolls on the material rollers.

[0048] refer to Figure 2 and Figure 3 The glue peeling mechanism 130 includes a glue peeling support 131, a movable bracket 132 and a glue peeling suction cup 133. The movable bracket 132 can be slidably disposed on the glue peeling support 131 to approach the first material roller 110 or the second material roller 120. The glue peeling suction cup 133 is disposed on the movable bracket 132 and is used to resist and attract the material strip.

[0049] In the working state, the position of the glue tearing support 131 is fixed relative to the first material roller 110 and the second material roller 120, and the movable bracket 132 is used to drive the glue tearing suction cup 133 to approach the first material roller 110 or the second material roller 120. The glue tearing suction cup 133 can be close to the material strip for adsorption and drive the material strip to separate from the corresponding material roller.

[0050] Furthermore, in order to increase the contact elasticity between the glue peeling suction cup 133 and the material tape and the pulling mechanism 140, the glue peeling mechanism 130 may further include a first buffer 134, which is connected between the glue peeling suction cup 133 and the movable bracket 132, and the first buffer 134 may specifically be a spring.

[0051] refer to Figure 2 and Figure 3, the glue tearing mechanism 130 further includes a tape guiding swing rod 135 which is movably arranged on the moving support 132, and the end of the tape guiding swing rod 135 is used to support the tape.

[0052] When the tape moves with the glue tearing suction cup 133, since the tape itself does not have a tensioning structure, the tape can be in a relatively tensioned state by contacting with the tape guiding swing rod 135. And at different positions, the relative deflection angle of the tape guiding swing rod 135 can be adjusted to realize the tensioning and guiding of different tapes, so as to avoid the tape from wrinkling.

[0053] In addition, in order to quickly pair the glue tearing suction cup 133 with the head of the tape, the glue tearing mechanism 130 may further include a glue tearing sensor 136 which is rotatably arranged on the moving support 132 and is used to detect the head position of the tape, so that the glue tearing suction cup 133 can move to a suitable position.

[0054] It should be noted that the glue tearing suction cup 133, the glue tearing sensor 136 and the moving support 132 are all movably arranged. Corresponding driving parts can be set for the three of them. The driving parts can drive the driven objects to do linear motion in multiple directions or rotate around a certain axis, and a guiding mechanism is provided for guiding. Regarding the specific motion modes of the three, they can be set according to actual needs.

[0055] Reference Figure 4 , the tape pulling mechanism 140 includes a tape pulling support 141, a first tape pulling sliding seat 142, a second tape pulling sliding seat 143 and a tape pulling suction cup 144. The first tape pulling sliding seat 142 is slidably arranged on the tape pulling support 141 along a first direction, the second tape pulling sliding seat 143 is slidably arranged on the first tape pulling sliding seat 142 along a second direction, and the tape pulling suction cup 144 is rotatably arranged on the second tape pulling sliding seat 143. The tape pulling suction cup 144 is used to abut against and attract the tape.

[0056] In the above technical solution, the tape pulling suction cup 144 can move in multiple directions relative to the tape pulling support 141, and the tape pulling suction cup 144 can also rotate, so as to better perform the tape pulling operation. The tape pulling mechanism 140 ensures a suitable contact position with the tape through the rotation of the tape pulling suction cup 144, and drives the tape to move from the side close to the glue tearing mechanism 130 to the side close to the tape connecting and gluing mechanism 150.

[0057] It should be noted that the first direction refers to the direction between the glue tearing mechanism 130 and the tape connecting and gluing mechanism 150, the second direction refers to the extending direction of the first tape pulling sliding seat 142, and the second direction is perpendicular to the first direction and the extending direction between the two tape rollers.

[0058] Reference Figure 5 andFigure 6 The tape - attaching adhesive mechanism 150 includes a first working module 151 and a second working module 152 which are oppositely arranged. The first working module 151 includes a first mounting plate 1511 and a first material - receiving plate 1512. The first material - receiving plate 1512 is movably connected to the first mounting plate 1511, and at least two first material - sucking ports 1513 are arranged on the first material - receiving plate 1512.

[0059] The second working module 152 includes a second mounting plate 1521, a second material - receiving plate 1522, a pressing block 1524, and a first cutting knife 1525. The second material - receiving plate 1522 is movably connected to the second mounting plate 1521. The pressing block 1524 and the first cutting knife 1525 are both connected to the same side of the second material - receiving plate 1522, and a second material - sucking port 1523 is arranged on the other side of the second material - receiving plate 1522.

[0060] It should be noted that by setting the first working module 151 and the second working module 152, during the operation process, the two material - receiving plates can be made to approach each other, so that the pressing block 1524 abuts against the first material - receiving plate 1512, and the first cutting knife 1525 is used to cut the tape. At the same time, in order to change the relative positions of the pressing block 1524 and the first cutting knife 1525, a second buffer member 1526 can be arranged between the pressing block 1524 and the second material - receiving plate 1522. When the second buffer member 1526 is compressed and contracted, the end of the first cutting knife 1525 can protrude from the pressing block 1524, thereby realizing the cutting of the tape. Specifically, the second buffer member 1526 can be a spring. In the normal state of the second buffer member 1526, the end of the first cutting knife 1525 does not protrude from the pressing block 1524 to avoid accidental injury.

[0061] Moreover, the number of the pressing blocks 1524 and the second buffer members 1526 is two groups, and the first cutting knife 1525 is arranged between the two groups of pressing blocks 1524 and second buffer members 1526.

[0062] In this embodiment, the number of the first material - sucking ports 1513 on the first material - receiving plate 1512 is three. One is used to adsorb the first tape, the second is used to adsorb the second tape, and the third is used to adsorb the tape for bonding the two tapes. Moreover, in addition to linearly moving relative to the first mounting plate 1511, the first material - receiving plate 1512 can also rotate relatively. When the material - receiving ports are arranged on different sides of the first material - receiving plate 1512, the position of the first material - sucking port 1513 can be adjusted by the rotation of the first material - receiving plate 1512. The number of the second material - sucking ports 1523 on the second material - receiving plate 1522 is one, and by rotating the second material - receiving plate 1522, the second material - sucking port 1523 can be made to face the first material - receiving plate 1512.

[0063] ReferenceFigure 7 The tape - attaching and gluing mechanism 150 further includes two glue - preparing modules 155. Each glue - preparing module 155 includes a glue - preparing tray 156, a tape - wrapping device 157, and a second cutter 158. The glue - preparing tray 156 is used to support the tape, the tape - wrapping device 157 is used to pull the tape, and the second cutter 158 is used to cut the tape.

[0064] Specifically, the two glue - preparing modules 155 respectively correspond to the two working modules. The glue - preparing tray 156 can be used to support the film roll and fix the end of the tape on the film roll. The tape - wrapping device 157 is used to attract the end of the tape. The tape - wrapping device 157 can move relative to the glue - preparing tray 156 to drive the tape to elongate. The tape - wrapping device 157 can rotate itself to wind the tape. During the process of pulling the tape, a brake can be set to hold the tape - wrapping device 157 to prevent the tape - wrapping device 157 from rotating by itself and causing the tape to be wound. The second cutter 158 is used to cut the pulled tape. The tape - wrapping device 157 is used to drive the cut tape close to one of the first suction ports 1513 on the first receiving plate 1512, so that the tape is sucked tightly by the first suction port 1513, and then move close to the two tapes to be bonded. Through the abutting and extrusion between the receiving plates, the tape is bonded to the two tapes simultaneously, thus completing the tape - attaching operation.

[0065] Reference Figure 1 The automatic roll - changing and tape - attaching device 100 further includes a waste bin 160. The waste bin 160 is arranged below the tape - tearing mechanism 130, the tape - pulling mechanism 140, and the tape - attaching and gluing mechanism 150.

[0066] In the working state, there may be some scraps of the tape and the film falling. The waste bin 160 is used to receive the fallen scraps to avoid having a negative impact on the overall production environment.

[0067] It should be noted that the above - mentioned components with adsorption functions can all be provided with switches. When the switch is turned on, negative pressure is provided to attract the tape or the film. When the switch is turned off, the adsorption force disappears, and the tape or the film can fall off under its own gravity.

[0068] Reference Figures 8 - 12 During the working process, when the tape on the first material roller 110 is completely transmitted, the tape - tearing mechanism 130 can perform the tape - tearing operation on the tape on the second material roller 120, then adsorb the head of the tape, and the tape - pulling mechanism 140 drives the head of the tape to move towards the working module. The working module can perform cutting and gluing operations on the tape to connect the tail end of the previous tape and the head end of the next tape. Before the gluing operation, the glue - preparing module 155 provides the tape for the working module, so that there is no need to prepare glue separately during the gluing operation, thereby improving the operation efficiency.

[0069] An embodiment of the present utility model further provides a lithium battery production system, including an automatic roll changing and tape connecting device 100, and further including a driving device. The driving device is used to provide a driving force, which can, on the one hand, make the tape move continuously, and on the other hand, supply energy to the components in the automatic roll changing and tape connecting device 100 to ensure the normal progress of the work.

[0070] In summary, the automatic roll changing and tape connecting device 100 and the lithium battery production system provided by the embodiment of the present utility model at least have the following advantages:

[0071] (1) The glue tearing mechanism 130, the tape pulling mechanism 140, and the tape connecting and gluing mechanism 150 can sequentially perform glue tearing operation, tape pulling operation, and tape connecting and gluing operation to replace the existing manual roll changing, reducing the labor intensity and improving the labor efficiency at the same time.

[0072] (2) By providing a guide tape swing rod 135 for supporting and guiding the tape, the tape can maintain the transfer stability in different states.

[0073] (3) By providing a plurality of first suction ports 1513 on the same first material receiving plate 1512, the tape to be bonded and the tape for bonding can be adsorbed simultaneously, reducing the setting of adsorption components and lowering the manufacturing cost.

[0074] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An automatic tape-changing and splicing device, characterized in that: include: A first material roller (110), a second material roller (120), a glue tearing mechanism (130), a tape pulling mechanism (140), and a tape splicing and gluing mechanism (150); The first material roller (110) and the second material roller (120) are arranged at intervals, the glue tearing mechanism (130), the tape pulling mechanism (140) and the tape splicing gluing mechanism (150) are all arranged between the first material roller (110) and the second material roller (120), the first material roller (110) and the second material roller (120) are respectively used to transmit the material tape, the glue tearing mechanism (130) is used to approach the first material roller (110) or the second material roller (120) to perform glue tearing operation, the tape pulling mechanism (140) is used to pull the material tape close to the tape splicing gluing mechanism (150), and the tape splicing gluing mechanism (150) is used to perform tape splicing gluing operation on the material tape.

2. The automatic tape-changing and splicing device according to claim 1, characterized in that: The glue peeling mechanism (130) comprises a glue peeling support (131), a movable bracket (132) and a glue peeling suction cup (133); the movable bracket (132) is slidably arranged on the glue peeling support (131) to approach the first material roller (110) or the second material roller (120); the glue peeling suction cup (133) is arranged on the movable bracket (132) and is used to resist and attract the material strip.

3. The automatic tape-changing and splicing device according to claim 2, characterized in that: The glue-tearing mechanism (130) further comprises a first buffer member (134), wherein the first buffer member (134) is connected between the glue-tearing suction cup (133) and the movable bracket (132).

4. The automatic tape-changing and splicing device according to claim 2, characterized in that: The adhesive peeling mechanism (130) further comprises a tape guide swing rod (135), wherein the tape guide swing rod (135) is movably arranged on the movable bracket (132), and an end portion of the tape guide swing rod (135) is used to support the material tape.

5. The automatic tape-changing and splicing device according to claim 2, characterized in that: The glue-tearing mechanism (130) further comprises a glue-tearing sensor (136), and the glue-tearing sensor (136) is rotatably disposed on the movable bracket (132).

6. The automatic tape-changing and splicing device according to any one of claims 1 to 5, characterized in that: The strap mechanism (140) includes a strap support (141), a first strap slide (142), a second strap slide (143) and a strap suction cup (144); the first strap slide (142) is slidably disposed on the strap support (141) along a first direction; the second strap slide (143) is slidably disposed on the first strap slide (142) along a second direction; the strap suction cup (144) is rotatably disposed on the second strap slide (143); and the strap suction cup (144) is used to resist and attract the material tape.

7. The automatic tape-changing and splicing device according to any one of claims 1 to 5, characterized in that: The tape splicing and gluing mechanism (150) comprises a first operating module (151) and a second operating module (152) which are arranged opposite to each other; The first operation module (151) comprises a first mounting plate (1511) and a first material receiving plate (1512), wherein the first material receiving plate (1512) is movably connected to the first mounting plate (1511), and the first material receiving plate (1512) is provided with at least two first material suction ports (1513); The second operating module (152) includes a second mounting plate (1521), a second material receiving plate (1522), a clamping block (1524) and a first cutter (1525); the second material receiving plate (1522) is movably connected to the second mounting plate (1521); the clamping block (1524) and the first cutter (1525) are both connected to the same side of the second material receiving plate (1522); and a second material suction port (1523) is provided on the other side of the second material receiving plate (1522).

8. The automatic tape-changing and splicing device according to claim 7, characterized in that: The tape splicing and gluing mechanism (150) further comprises two glue preparation modules (155), wherein the glue preparation module (155) comprises a glue preparation disk (156), a glue wrapper (157) and a second cutter (158), wherein the glue preparation disk (156) is used to support the adhesive tape, the glue wrapper (157) is used to pull the adhesive tape, and the second cutter (158) is used to cut the adhesive tape.

9. The automatic roll-changing and tape-splicing device according to any one of claims 1 to 5, characterized in that: The automatic roll-changing and tape-splicing device further comprises a waste box (160), and the waste box (160) is arranged at the lower side of the glue-tearing mechanism (130), the tape-pulling mechanism (140) and the tape-splicing and gluing mechanism (150).

10. A lithium battery production system, characterized in that: It comprises the automatic roll-changing and tape-splicing device as described in any one of claims 1 to 9.

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