Winding system, rolling equipment and battery production system

Abstract

The present application provides a winding system, rolling equipment and battery production system, which belongs to the field of battery manufacturing. The winding system includes a roll-changing mechanism and an upper winding drum and a lower winding drum that can rotate around their own axis and are arranged opposite to each other and spaced apart in the vertical direction. The roll-changing mechanism includes a roller, a cutting device and a movable pressure roller that are arranged in sequence along the conveying direction of the strip; the movable pressure roller is located between the upper winding drum and the lower winding drum and can move relative to the roller so that the strip is wound on one of the upper winding drum and the lower winding drum; the roll wound on one of the upper winding drum and the lower winding drum reaches a preset roll diameter, the cutting device cuts the strip, and the movable pressure roller is used to drive the strip to be wound on the other of the upper winding drum and the lower winding drum; when the strip is cut, the movable pressure roller remains tangent to the roll. When the winding system of the present invention cuts the strip during operation, the movable pressure roller presses the strip, so that the wrinkling phenomenon of the overhanging section produced after cutting the strip can be reduced or even eliminated, which can improve the reliability of the roll-changing and winding operation.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a winding system, rolling equipment and a battery production system. Background Art

[0002] The current battery production process typically includes slurry preparation, coating, roll pressing, die-cutting, winding or lamination, shell insertion, and liquid injection. During the coating, rolling, and die-cutting processes, the battery film material is supplied in roll form. After each process is completed, the roll is rewound to facilitate transfer to the next process.

[0003] To improve production efficiency, the upper reel winds the strip to a full roll, then cuts it and moves it to the lower reel for rewinding. This allows for continuous rewinding without stopping the machine. Improving the reliability of the reel-changing and rewinding operations is a concern. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the background art. To this end, one object of the present application is to provide a winding system, a rolling device and a battery production system that can effectively improve the reliability of the roll changing and winding operations.

[0005] The embodiment of the first aspect of the present application provides a winding system for winding a strip material, comprising: a roll-changing mechanism and an upper winding drum and a lower winding drum that can rotate around their own axes and are arranged opposite to each other and spaced apart in the vertical direction; the roll-changing mechanism comprises a passing roller, a cutting device and a movable pressure roller that are arranged in sequence along the conveying direction of the strip material; the movable pressure roller is located between the upper winding drum and the lower winding drum; the movable pressure roller is configured to be able to move relative to the passing roller so as to press the head end of the strip material against the upper winding drum and the lower winding drum from one side of the strip material The strip is wound around one of the upper and lower winding drums; the cutting device is configured to cut the strip when the roll wound by one of the upper and lower winding drums reaches a preset roll diameter, and the movable pressure roller then moves to the other side of the strip to drive the strip to be wound around the other of the upper and lower winding drums; and in the process of the upper and lower winding drums rotating to wind the strip into a roll and the cutting device cutting the strip, the movable pressure roller remains tangent to the roll.

[0006] In the technical solution of the embodiment of the present application, by introducing a movable pressure roller, the movable pressure roller can move from one side of the strip to the other side of the strip, so as to drive the strip to be alternately wound on the upper winding drum and the lower winding drum to achieve continuous winding. In addition, when the strip is cut, the movable pressure roller remains against the outer peripheral surface of the roll. In this way, the non-free end of the overhanging section generated when the strip is cut is pressed by the movable pressure roller. This not only slows down the speed at which the overhanging section droops, but also reduces the possibility of uneven tension distribution caused by sudden changes in tension in the overhanging section due to sudden drooping, and the tendency of the non-free end to droop downward is blocked, thereby reducing or even eliminating the wrinkling phenomenon of the overhanging section. This can effectively improve the position accuracy of the tail end of the roll, so as to facilitate the subsequent accurate identification of the tail end and smooth gluing operations, thereby improving the reliability of the roll changing and winding operations.

[0007] In some embodiments, the roll-changing mechanism is configured to be able to be raised and lowered, and the roll-changing mechanism has an upper winding station, a lower winding station and an intermediate station, and the intermediate station is located between the upper winding station and the lower winding station; at the upper winding station, the vertical distance between the over-roller and the upper winding drum in the vertical direction is smaller than the vertical distance between the over-roller and the lower winding drum in the vertical direction, and the movable pressure roller is used to drive the strip to be wound on the upper winding drum; at the lower winding station, the vertical distance between the over-roller and the upper winding drum in the vertical direction is larger than the vertical distance between the over-roller and the lower winding drum in the vertical direction, and the movable pressure roller is used to drive the strip to be wound on the lower winding drum.

[0008] In this embodiment, the lifting of the roll changing mechanism can drive the movable pressure roller to approach the upper material receiving drum or the lower material receiving drum, so the movement stroke of the movable pressure roller can be effectively shortened and the working space can be reduced, which is conducive to improving the movement accuracy of the movable pressure roller.

[0009] In some embodiments, the roll-changing mechanism further includes a frame and a first actuator, wherein the first actuator, the feed roller, the cutting device, and the movable pressure roller are all disposed on the frame; the first actuator is connected to the frame via a first transmission mechanism for driving the frame to rise and fall; wherein the first transmission mechanism includes a first fixed rack and a first rotating gear; the first fixed rack extends in a vertical direction; the first rotating gear is connected to the frame and can rotate about its own axis relative to the frame under the drive of the first actuator; the first fixed rack and the first rotating gear mesh with each other to transmit power, allowing the first rotating gear to roll in a vertical direction relative to the first fixed rack. The first rotating gear requires less space for movement, which facilitates a compact roll-changing mechanism.

[0010] In some embodiments, the winding system also includes a first linear rail assembly, the first linear rail assembly includes a first fixed guide rail and a first slider, the first fixed guide rail extends in a vertical direction, the first slider is connected to the frame, and the first slider is slidably connected to the first fixed guide rail.

[0011] This embodiment enables the first linear rail assembly to provide a stable movement path for the roll-changing mechanism to rise and fall, thereby reducing the possibility of shaking or deviation during the rise and fall of the roll-changing mechanism, making the roll-changing mechanism move more smoothly.

[0012] In some embodiments, the cutting device is configured so that the cut surface formed by cutting the strip is a plane, and the cut surface is perpendicular to two surfaces of the strip that are arranged opposite to each other along its thickness direction.

[0013] Compared with cutters with irregular shapes such as sawtooth shapes, this embodiment enables the cutting device to cut the strip to form a flat cutting end, which has a positive effect on the image recognition unit to accurately identify the cutting point (i.e. the tail end), and thus has a favorable effect on improving the reliability of the roll changing and winding operations.

[0014] In some embodiments, the cutting device includes a second actuator, a flat cutter and a second linear rail assembly. The thickness direction of the flat cutter and the thickness direction of the strip are perpendicular to the axial direction of the roller. The second actuator is connected to the flat cutter through a second transmission mechanism to drive the flat cutter to move back and forth along the axial direction of the roller. The second linear rail assembly includes a second fixed guide rail and a second slider that slides with the second fixed guide rail. The extension direction of the second fixed guide rail is parallel to the axial direction of the roller, and the second slider is connected to the flat cutter.

[0015] The strip is cut using a flat cutter, which, as a mechanical cutting tool, has lower manufacturing and maintenance costs compared to wire cutting equipment and laser cutting equipment.

[0016] In some embodiments, the second transmission mechanism is a belt transmission mechanism, which includes a driving wheel, a driven wheel and a conveyor belt, and the conveyor belt is tensioned on the driving wheel and the driven wheel; the axial direction of the driving wheel is perpendicular to the extension direction of the second fixed guide rail, and the conveyor belt is arranged on the outer periphery of the second linear rail assembly; the flat cutter and the second slider are both connected to the conveyor belt, and the second slider and the flat cutter are located on the same side of the second fixed guide rail.

[0017] With the help of the guiding function and supporting function of the second linear rail assembly, the movement stability of the conveyor belt can be improved, which in turn can help to make the movement of the flat cutter smooth and stable, so that the cutting quality can be effectively guaranteed.

[0018] In some embodiments, when the material roll wound by one of the upper winding drum and the lower winding drum reaches a preset roll diameter, the vertical distance between the center of the movable pressure roller and the cutting device along the conveying direction of the strip is greater than or equal to 180 mm and less than or equal to 220 mm.

[0019] This embodiment reduces the vertical distance between the cutting station and the center of the movable pressure roller against the material roll of the preset roll diameter, so that the length of the overhanging section produced can be as small as possible, and the weight of the overhanging section will also be reduced accordingly, which can have a positive effect on reducing the wrinkling phenomenon of the overhanging section.

[0020] In some embodiments, the roll-changing mechanism also includes a rocker arm, one end of which is arranged on the central axis and the other end is connected to the movable pressure roller. The rocker arm can rotate forward or reverse with the central axis; the movable pressure roller is arranged to adaptively adjust its position relative to the material roll during the strip winding process, and can drive the rocker arm to rotate adaptively.

[0021] The structure of the mechanism for realizing the swinging motion of the movable pressure roller is relatively compact, and the required motion range space is smaller.

[0022] In some embodiments, the roll changing mechanism also includes a clamping roller that can be raised and lowered relative to the passing roller, the clamping roller is arranged opposite and parallel to the passing roller, and the clamping roller and the passing roller are respectively located on both sides of the strip; the clamping roller is configured to move vertically to rest against the strip when the material roll wound by one of the upper winding drum and the lower winding drum reaches a preset winding diameter; the cutting device is configured to cut the strip when the material roll wound by one of the upper winding drum and the lower winding drum reaches a preset winding diameter and the clamping roller and the passing roller jointly clamp the strip.

[0023] By designing a liftable clamping roller, the strip tension can be controlled by adjusting the position of the clamping roller, which is conducive to flexibly adjusting the position of the clamping roller according to the winding process. When the material coil has not reached the preset coil diameter, the clamping roller does not contact the strip, and the risk of strip wear is reduced. When the material coil reaches the preset coil diameter, the clamping roller and the passing roller jointly clamp the strip before cutting the strip, which is conducive to improving cutting accuracy and cutting effect.

[0024] In some embodiments, the clamping roller is configured to rotate forward or reverse around its own axis; when the cutting device cuts the strip, the clamping roller rotates to drive the strip to be transported in the opposite direction of the conveying direction, so that the head end of the strip can be retreated between the clamping roller and the passing roller.

[0025] This embodiment enables the clamping roller to rotate forward or reverse. After cutting the strip, the clamping roller can be used to drive the head end of the strip back to between the clamping roller and the passing roller to prepare for the next roll change and rewinding.

[0026] In some embodiments, the roll-changing mechanism also includes a traction mechanism, which is located downstream of the cutting device along the conveying direction of the strip; the traction mechanism can move back and forth along a preset horizontal direction, and the preset horizontal direction is perpendicular to the axial direction of the roller; when the cutting device cuts the strip, the movable pressure roller moves to the other side of the strip, and the traction mechanism moves along the preset horizontal direction to pull the head end of the strip between the upper winding drum and the lower winding drum.

[0027] The traction mechanism is used to provide traction for the strip after it is cut, so that the strip can continue to be transported and wound. Compared with the technical method of manually pulling the strip between the upper winding drum and the lower winding drum, this embodiment can reduce manual intervention.

[0028] In some embodiments, the traction mechanism includes a parallel clamp and a flexible clamp connected to each other, and the two clamping fingers of the parallel clamp can be opened and closed in the vertical direction, so that the flexible clamp can clamp the head end of the strip or release the head end of the strip.

[0029] In this embodiment, the traction mechanism adopts a flexible clamp to clamp the strip. Thanks to the flexible nature of the flexible clamp, this helps to reduce the risk of strip wear.

[0030] In some embodiments, the roll changing mechanism also includes a frame and a third linear rail assembly, the third linear rail assembly includes a third fixed guide rail and a third slider slidingly engaged with the third fixed guide rail, the third fixed guide rail extends along a preset horizontal direction and is fixedly arranged on the frame, and the traction mechanism is connected to the third slider.

[0031] This embodiment enables the third linear rail assembly to provide a stable motion path for the reciprocating translation of the traction mechanism, thereby reducing the possibility of shaking or offsetting during the translation of the traction mechanism, making the traction mechanism move more smoothly.

[0032] In some embodiments, the roll-changing mechanism also includes a sliding rod, which is parallel to the roller; the number of upper winding drums, lower winding drums and traction mechanisms is the same and there are multiple of them; multiple upper winding drums are coaxially arranged and spaced apart along the extension direction of their own axes, and multiple lower winding drums are coaxially arranged and spaced apart along the extension direction of their own axes; multiple traction mechanisms are all arranged on the sliding rod, and the traction mechanisms can slide along the sliding rod.

[0033] This embodiment provides multiple upper and lower winding drums, and multiple upper winding drums can reel at the same time. After the material rolls reeled by each upper winding drum reach the preset roll diameter, they can be switched to multiple lower winding drums for reeling at the same time, which can greatly improve the reeling efficiency and production efficiency.

[0034] An embodiment of the second aspect of the present application provides a rolling device, which includes two oppositely arranged rollers and the winding system in the above embodiment.

[0035] An embodiment of the third aspect of the present application provides a battery production system, which includes the winding system in the above embodiment, or includes the rolling equipment in the above embodiment.

[0036] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0038] Figure 1 Schematic diagram of the principles of some roll changing mechanisms in related technologies;

[0039] Figure 2 This is a schematic structural diagram of a roll changing mechanism in some embodiments of the present application;

[0040] Figure 3 Schematic diagram of the process of the upper winding drum of the winding system of some embodiments of the present application winding the strip;

[0041] Figure 4 Schematic diagram of the process of the lower winding drum of the winding system of some embodiments of the present application winding the strip;

[0042] Figure 5 This is a schematic structural diagram of the winding system of some embodiments of the present application when the material roll on the upper winding drum reaches a preset roll diameter;

[0043] Figure 6 This is a schematic structural diagram of a winding system in some embodiments of the present application, in which the head end of the strip is pulled above the lower winding drum;

[0044] Figure 7 This is a schematic structural diagram of a winding system in some embodiments of the present application where a movable pressure roller presses a strip material onto a lower winding drum;

[0045] Figure 8 This is a schematic structural diagram of the winding system of some embodiments of the present application when the roll of the lower winding drum reaches a preset roll diameter;

[0046] Figure 9 This is a schematic structural diagram of a cutting device of a winding system according to some embodiments of the present application;

[0047] Figure 10 for Figure 9 A partial enlarged schematic diagram of point E in the middle;

[0048] Figure 11 This is a schematic diagram of the cooperation between the traction mechanism and the strip of the winding system in some embodiments of the present application.

[0049] Description of reference numerals:

[0050] Strip 1000, coil 1100;

[0051] Roll changing mechanism 100, roller 110, cutting device 120, second actuator 121, flat cutter 122, second linear rail assembly 123, second fixed guide rail 1231, second slider 1232, conveyor belt 124, mounting seat 125, movable pressure roller 130, rocker 131, driver 132, central axis 133, third transmission mechanism 134, frame 140, slider 141, first transmission mechanism 142, first fixed rack 142 1, first rotating gear 1422, second fixed rack 143, optical axis 144, mounting plate 145, first actuator 150, first linear rail assembly 160, first fixed guide rail 161, first slider 162, third linear rail assembly 170, third fixed guide rail 171, third slider 172, clamping roller 180, traction mechanism 190, parallel clamp 191, flexible clamp 192, third actuator 193, sliding mounting block 194;

[0052] Upper take-up reel 200;

[0053] Lower take-up drum 300;

[0054] Image recognition unit 400. DETAILED DESCRIPTION

[0055] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0056] 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 application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0057] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0058] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0059] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0060] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0061] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply 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 a limitation on the embodiments of the present application.

[0062] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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; it can be the internal connection of two elements or the interaction relationship between two elements.

[0063] In this application, the term "parallel" includes not only the absolutely parallel case, but also the generally parallel case as commonly understood in engineering. Meanwhile, "perpendicular" also includes not only the absolutely perpendicular case, but also the generally perpendicular case as commonly understood in engineering. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0064] Currently, during the battery production process, when the strip 1000 is fully wound, manual intervention is generally required to complete the winding and rewinding. That is, the winding process and rewinding operations of the strip 1000 are semi-automated. Specifically, the operator stops the equipment, manually triggers the cutting device to cut the strip 1000, and then operates the roll to continue rotating in the winding direction so that the tail end of the roll is wound. The operator then performs a taping operation to apply tape to the tail end of the fully wound roll (i.e., the cut point) to secure the tail end, completing the complete winding operation. The operator then operates the strip 1000 to switch to an empty reel for winding, and then begins a new winding process, and then unloads the fully wound roll.

[0065] In order to further improve the winding efficiency and production efficiency, the winding process of the strip 1000 and the roll changing and winding operation can be designed to be fully automated. Specifically, when the strip 1000 is wound to a full roll, Figure 1 As shown, the cutting device automatically cuts the strip 1000, and the roll continues to rotate along the winding direction to roll the tail end into the roll. Then, when the image recognition unit recognizes the tail end of the roll, the gluing mechanism is controlled to automatically glue the tail end to complete the winding, and then the automatic roll changing and winding operation is performed.

[0066] With this design, Figure 1 As shown, if two winding drums are arranged in an upper and lower direction, during actual production, when the roll 1100 being wound on the lower of the two winding drums is nearing full capacity, the cutting device 120 subsequently cuts the tape, creating an overhanging section. The overhanging section refers to the portion of the tape 1000 that has not yet been wound and is naturally drooping under the influence of gravity (i.e., the portion between point A, where the tape 1000 intersects the outer surface of the finished roll 1100, and point B, where the tape is cut). The overhanging section consists of a free end and a non-free end, respectively. The free end is the cut point. After cutting, when the roll 1100 continues to wind, the non-free end is rewound before the free end. As the overhanging section naturally droops under the influence of gravity, the portion near the bottom experiences greater vertical tension, while the portion near the top experiences less tension. This tension differential results in uneven tension distribution during the drooping process, causing tension in the middle of the overhanging section and slack at the edges, which can easily lead to wrinkles. Wrinkling of the overhanging section will cause the position of the tail end of the material roll 1100 to be inaccurate, which will easily cause the image recognition unit 400 to be unable to detect and identify the tail end, resulting in the subsequent gluing operation being unable to proceed smoothly, the winding being unable to be completed, and seriously affecting the roll changing and winding operations.

[0067] Furthermore, it is also understood that the overhanging section (i.e., section AB) droops with considerable randomness; it may fall toward the side of the roll 1100 closer to the cutting device 120 or toward the side of the roll 1100 facing away from the cutting device 120. If the overhanging section falls to a different side of the roll 1100 from the side where the image recognition unit 400 is located, the image recognition unit 400 will be unable to detect and identify the tail end during the rewinding of the overhanging section. This can lead to failed gluing, incomplete rewinding, and serious disruption to the rewinding and roll-changing operations.

[0068] Based on the above considerations, and to improve the reliability of the roll-changing and rewinding operations, a rewinding system was designed that incorporates a movable pressure roller. The movable pressure roller is designed to move from one side of the strip 1000 to the other side of the strip 1000, driving the strip 1000 to be alternately rewound around the upper and lower reel drums to achieve continuous rewinding. The movable pressure roller remains in contact with the outer circumference of the roll when the roll reaches a preset diameter. In this rewinding system, the strip 1000 is cut after the rolls wound by the upper and lower reel drums reach the preset diameter. The non-free end of the resulting overhang is compressed by the movable pressure roller, which reduces or even eliminates wrinkles in the overhang caused by sagging. This effectively improves the positional accuracy of the roll's tail end, facilitating subsequent accurate identification of the tail end and smooth glue application, thereby improving the reliability of the roll-changing and rewinding operations.

[0069] The winding system involved in the embodiment of the present application can be applied to various processes that require winding the strip 1000, such as a coating process, a rolling process, a die-cutting process, etc. In other words, the winding system involved in the embodiment of the present application can be used as a coating device for implementing a coating process, and accordingly, the strip 1000 wound by the winding system is a pole piece, which includes a current collector and an active material disposed on at least one surface; or, the winding system involved in the embodiment of the present application can also be used as a rolling device for implementing a rolling process, and accordingly, the strip 1000 wound by the winding system is a pole piece after rolling, and the rolling device also includes two rollers disposed oppositely; or, the winding system involved in the embodiment of the present application can also be used as a die-cutting device for implementing a die-cutting process, and accordingly, the strip 1000 wound by the winding system is a pole piece after die-cutting.

[0070] In other scenarios, a battery production system can also be formed using the winding system, coating equipment, rolling equipment, die-cutting equipment, etc. involved in this application. For the sake of clarity, the following embodiments are all described using the winding system applied to the rolling equipment as an example.

[0071] See also Figure 2 and Figure 3The present invention provides a winding system for winding a strip 1000, comprising an upper winding drum 200, a lower winding drum 300, and a roll-changing mechanism 100. The upper winding drum 200 and the lower winding drum 300 are arranged vertically opposite each other and spaced apart. Both the upper winding drum 200 and the lower winding drum 300 are rotatable about their respective axes. The roll-changing mechanism 100 comprises a roller 110, a cutting device 120, and a movable pressure roller 130, which are sequentially arranged along the conveying direction of the strip 1000. The movable pressure roller 130 is located between the upper winding drum 200 and the lower winding drum 300.

[0072] The movable pressure roller 130 is configured to be able to move relative to the passing roller 110 so as to press the head end of the strip 1000 against one of the upper winding drum 200 and the lower winding drum 300 from one side of the strip 1000, so that the strip 1000 is wound on one of the upper winding drum 200 and the lower winding drum 300; the cutting device 120 is configured to cut the strip 1000 when the roll 1100 wound on one of the upper winding drum 200 and the lower winding drum 300 reaches a preset winding diameter, and the movable pressure roller 130 then moves to the other side of the strip 1000 to drive the strip 1000 to be wound on the other of the upper winding drum 200 and the lower winding drum 300. Furthermore, during the process in which the upper winding drum 200 or the lower winding drum 300 rotates to wind the strip 1000 into the roll 1100 and the cutting device 120 cuts the strip 1000 , the movable pressing roller 130 remains tangential to the roll 1100 .

[0073] Among them, the strip 1000 is different according to the different processes used in the winding system. For example, it can be a pole piece that has been coated in the coating process, a pole piece that has been cold-pressed in the rolling process, or a pole piece that has been die-cut in the die-cutting process.

[0074] The upper winding drum 200 and the lower winding drum 300 are both mounted on a rotating shaft. The rotating shaft, the over-roller 110, and the movable pressure roller 130 are all parallel and extend horizontally. The rotating shaft is configured to rotate, allowing the upper winding drum 200 and the lower winding drum 300 to rotate about their respective axes. The rotating shaft can be implemented as either a slip shaft or an air shaft, which is not limited in this embodiment. Along the transport path, the strip 1000 passes over the roller 110, which can specifically be a rubber roller.

[0075] Under the premise that no interference or conflict occurs, the preset roll diameter is set as the maximum allowable roll diameter, and when the material roll 1100 reaches the preset roll diameter, it can be determined to be in a full roll state.

[0076] Assuming that the upper winding drum 200 and the lower winding drum 300 are both empty drums in the initial state of the winding system, an exemplary working process of the winding system of this embodiment is as follows:

[0077] The upper winding drum 200 is wound. S11, as Figure 3As shown in the middle A, the movable pressure roller 130 is controlled to move to a position closer to the lower winding drum 300 than the roller 110, and the leading end of the strip 1000 is pulled between the upper winding drum 200 and the lower winding drum 300. The leading end of the strip 1000 is located above the movable pressure roller 130, that is, the movable pressure roller 130 is located on the lower side of the strip 1000. S12, the movable pressure roller 130 moves to approach the upper winding drum 200 until the movable pressure roller 130 abuts against the strip 1000 from the lower side of the strip 1000; the movable pressure roller 130 continues to move, driving the strip 1000 to move, until the leading end of the strip 1000 abuts against the upper winding drum 200, as shown in FIG. Figure 3 As shown in B. S13, the upper winding drum 200 rotates to wind the strip 1000 into a roll 1100; as the upper winding drum 200 winds, the roll diameter of the roll 1100 gradually increases. During this process, the movable pressure roller 130 moves as the upper winding drum 200 rotates. The movable pressure roller 130 always abuts against the outer peripheral surface of the roll 1100 to maintain tangency with the roll 1100, as shown in FIG. Figure 3 As shown in C; until the material roll 1100 reaches the preset roll diameter, it means that the material roll 1100 reaches the full roll state, as shown in FIG. Figure 3 Middle D and Figure 5 As shown. S14, the cutting device 120 cuts the strip 1000. S15, the upper winding drum 200 continues to rotate so that the resulting overhanging section (in Figure 3 The material roll 1100 is wound on the upper winding drum 200. S16, the tail end of the material roll 1100 is glued; and a new empty roll is used to replace the full roll of the upper winding drum 200.

[0078] The lower winding drum 300 is wound. S21, as Figure 4 Middle B and Figure 6 As shown, the movable pressure roller 130 is controlled to move to a position closer to the upper winding drum 200 than the roller 110, so that the movable pressure roller 130 switches to the upper side of the strip 1000, and then pulls the head end of the strip 1000 between the upper winding drum 200 and the lower winding drum 300. S22, the movable pressure roller 130 moves to approach the lower winding drum 300 until the movable pressure roller 130 abuts against the strip 1000 from the upper side of the strip 1000; the movable pressure roller 130 continues to move to drive the strip 1000 to move until the head end of the strip 1000 abuts against the lower winding drum 300, as shown in FIG. Figure 4 Middle C and Figure 7 As shown in S23, the lower winding drum 300 rotates to wind the strip 1000 into a roll 1100; as the lower winding drum 300 winds, the roll 1100 gradually increases in diameter. During this process, the movable pressure roller 130 moves along with the rotation of the lower winding drum 300. The movable pressure roller 130 always abuts against the outer circumference of the roll 1100 to maintain tangency with the roll 1100, as shown in FIG. Figure 4As shown in D; until the material roll 1100 reaches the preset roll diameter, it means that the material roll 1100 is full, as shown in FIG. Figure 8 S24, the cutting device 120 cuts the strip 1000. S25, the lower winding drum 300 continues to rotate a certain angle so that the resulting overhanging section is wound onto the upper winding drum 200. S26, the tail end of the roll 1100 is then glued.

[0079] Return to the winding step of the upper winding drum 200, so that the upper winding drum 200 and the lower winding drum 300 are wound in turn.

[0080] The winding system of this embodiment introduces a movable pressure roller 130, and designs the movable pressure roller 130 to be able to move from one side of the strip 1000 to the other side of the strip 1000, so as to drive the strip 1000 to be alternately wound on the upper winding drum 200 and the lower winding drum 300 to achieve continuous winding, thereby improving the roll changing efficiency during the winding process.

[0081] Furthermore, as the upper and lower winding drums 200 and 300 rotate to wind the strip 1100, the movable pressure roller 130 can move accordingly, maintaining tangency with the strip 1100 until the strip 1100 reaches a predetermined diameter. This allows the movable pressure roller 130 to remain tangential to the strip 1100, allowing the cutting device 120 to cut the strip 1000. In other words, the movable pressure roller 130 remains in contact with the outer circumference of the strip 1100 during cutting. This can reduce or even eliminate wrinkling in the overhanging section. This is because the non-free end of the overhanging section is compressed by the movable pressure roller 130, which not only slows down the overhanging section's drooping, reducing the potential for uneven tension distribution caused by sudden drooping and sudden changes in tension, but also because the non-free end is compressed, its tendency to droop downward is inhibited, minimizing the extent of the overhanging section's droop and reducing or even eliminating wrinkles in the overhanging section due to gravity. In this way, the position accuracy of the tail end of the material roll 1100 can be effectively improved, so as to facilitate the subsequent accurate identification of the tail end and smooth gluing operation, thereby improving the reliability of the roll changing and winding operation.

[0082] Moreover, compared with Figure 1 In the related art shown, in this embodiment, the movable pressure roller 130 presses against the strip 1000 when the strip 1000 is cut. Under the blocking action of the movable pressure roller 130, the overhanging section can accurately fall toward the side of the roll 1100 near the cutting device 120, reducing the randomness of the overhanging section's falling direction. In other words, the overhanging section's falling direction is determined, allowing the image recognition unit to effectively identify the tail end, thereby facilitating the subsequent gluing operation. The strip 1000 can then be smoothly rewound, further improving the reliability of the roll-changing and rewinding operations.

[0083] According to some optional embodiments of the present application, the roll-changing mechanism 100 is configured to be liftable and includes an upper winding station, a lower winding station, and an intermediate station, with the intermediate station being located between the upper and lower winding stations. At the upper winding station, the vertical distance between the roller 110 and the upper winding drum 200 is smaller than the vertical distance between the roller 110 and the lower winding drum 300, and the movable pressure roller 130 is used to drive the strip 1000 to be wound around the upper winding drum 200. At the lower winding station, the vertical distance between the roller 110 and the upper winding drum 200 is larger than the vertical distance between the roller 110 and the lower winding drum 300, and the movable pressure roller 130 is used to drive the strip 1000 to be wound around the lower winding drum 300.

[0084] Set the winding system to the middle position in the initial state, please continue to refer to Figure 2 and Figure 3 In the working process of the winding system in this example, when executing the winding step of the upper winding drum 200, step S10 can be executed before step S11; and step S17 can be executed after step S16.

[0085] S10, switching the winding system from the middle station to the upper winding station. S17, switching the winding system from the upper winding station to the middle station.

[0086] At the same time, when the winding step of the lower winding drum 300 is executed, step S20 may be executed before step S21 ; and step S27 may be executed after step S26 .

[0087] S20, switching the winding system from the middle station to the lower winding station. S27, switching the winding system from the lower winding station to the middle station.

[0088] Among them, the middle station is equivalent to the reset position of the roll changing system. When the upper winding drum 200 or the lower winding drum 300 is full, the winding system can return to the reset position to prepare for the next winding.

[0089] This embodiment enables the roll-changing mechanism 100 to be raised and lowered to switch between the upper winding station, the middle station, and the lower winding station. As a result, the movement stroke of the movable pressure roller 130, which drives the strip 1000 from the lower side to abut against the upper winding drum 200, can be shortened at the upper winding station. Similarly, the movement stroke of the movable pressure roller 130, which drives the strip 1000 from the upper side to abut against the lower winding drum 300, can also be shortened at the lower winding station. In general, the lifting and lowering of the roll-changing mechanism 100 can drive the movable pressure roller 130 to approach the upper winding drum or the lower winding drum, thereby effectively shortening the movement stroke of the movable pressure roller 130 and reducing the working space, which is conducive to improving the movement accuracy of the movable pressure roller 130.

[0090] It should be noted that when the winding system operates for extended periods, the position of the roll-changing mechanism 100 may experience minor errors due to mechanical wear, drift, and other factors. This embodiment allows the roll-changing mechanism 100 to return to an intermediate position for reset after completing a single rewinding operation on the upper reel 200 or the lower reel 300. This facilitates recalibration and prevents cumulative errors. Furthermore, this design helps reduce the complexity of the winding system's control program, thereby enhancing the winding system's operational stability.

[0091] In order to enable the roll changing mechanism 100 to be able to move up and down, Figure 2 、 Figures 5 to 8 As shown, the roll changing mechanism 100 may further be designed to specifically include a frame 140 and a first actuator 150. The first actuator 150, the feed roller 110, the cutting device 120, and the movable pressure roller 130 are all disposed on the frame 140. The frame 140 provides a mounting base for the first actuator 150, the feed roller 110, the cutting device 120, and the movable pressure roller 130. The first actuator 150 is in transmission connection with the frame 140 via a first transmission mechanism 142, so as to drive the frame 140 to rise and fall, thereby causing the feed roller 110, the cutting device 120, and the movable pressure roller 130 disposed on the frame 140 to rise and fall accordingly.

[0092] The frame 140 may specifically include two base plates that are parallel to each other and spaced apart along the axial direction of the passing roller 110 , and the passing roller 110 and the movable pressing roller 130 are disposed between the two base plates.

[0093] The first actuator 150 can be a linear actuator, such as a linear motor, a pneumatic cylinder, or a hydraulic cylinder. Alternatively, the first actuator 150 can be a rotary actuator, such as a stepper motor or a servo motor. In this example, the first transmission mechanism 142 can be used to convert the rotary power provided by the rotary actuator into linear power. The first transmission mechanism 142 can be implemented using any of a worm gear mechanism, a screw-nut mechanism, a rack-and-pinion mechanism, a chain drive mechanism, and a belt drive mechanism.

[0094] According to some embodiments of the present application, in the solution where the first actuator 150 is a rotary actuator, please continue to refer to Figure 2 、 Figure 5 、 Figure 6 and Figure 8 The first transmission mechanism 142 may specifically include a first fixed rack 1421 and a first rotating gear 1422. The first fixed rack 1421 extends vertically, and the first rotating gear 1422 is connected to the frame 140 and can rotate about its own axis relative to the frame 140 under the drive of the first actuator 150. The first fixed rack 1421 and the first rotating gear 1422 are meshed and transmitted, allowing the first rotating gear 1422 to roll vertically relative to the first fixed rack 1421.

[0095] Since the first rotating gear 1422 is mounted on the frame 140 , the first rotating gear 1422 can be regarded as a component unit of the roll changing mechanism 100 .

[0096] When the winding system of this example is working, the first actuator 150 drives the first rotating gear 1422 to rotate. Since the first fixed rack 1421 is fixed, the first rotating gear 1422 engaged with the first fixed rack 1421 can also move, thereby causing the first rotating gear 1422 to roll in the vertical direction, thereby driving the frame 140 and the first actuator 150, the roller 110, the cutting device 120 and the movable pressure roller 130 arranged on the frame 140 to move in the vertical direction.

[0097] This embodiment uses a rack and pinion mechanism as the first transmission mechanism 142, which has the advantages of high motion precision and a wide range of travel. Furthermore, by making the first fixed rack 1421 stationary and the first rotating gear 1422 both rotatable and movable, the space required for the first rotating gear 1422 is smaller than that required for the movable rack. This facilitates a more compact roll-changing mechanism 100 and facilitates travel control.

[0098] According to some embodiments of this application, please continue to refer to Figure 2 、 Figure 5 、 Figure 6 and Figure 8 The winding system may further include a first linear rail assembly 160 . The first linear rail assembly 160 includes a first fixed guide rail 161 and a first slider 162 . The first fixed guide rail 161 extends in a vertical direction. The first slider 162 is connected to the frame 140 . The first slider 162 is slidably connected to the first fixed guide rail 161 .

[0099] Among them, Figure 2 In the embodiment, two first linear rail assemblies 160 are provided. Two first sliders 162 belonging to different first linear rail assemblies 160 are fixedly connected to the two base plates, respectively. Two first fixed guide rails 161 belonging to different first linear rail assemblies 160 are arranged parallel to each other and spaced apart. The two base plates are located between the two first fixed guide rails 161. Of course, in other embodiments, the number of first linear rail assemblies 160 can also be one, three, or more.

[0100] It can be understood that since the first slider 162 is installed on the frame 140, the first slider 162 can be regarded as a component unit of the roll changing mechanism 100, that is, the first slider 162 can move in the up and down directions along with the frame 140 and also slide along the first fixed guide rail 161.

[0101] In this embodiment, the first linear rail assembly 160 provides a stable motion path for the roll-changing mechanism 100 to ascend and descend, thereby reducing the possibility of shaking or deflection of the roll-changing mechanism 100 during elevation, making the roll-changing mechanism 100 move more smoothly. This also reduces the risk of localized wear caused by deflection of the roll-changing mechanism 100. The first linear rail assembly 160 can also share some of the pressure, thereby helping to reduce wear of the roll-changing mechanism 100.

[0102] According to some embodiments of the present application, the cutting device 120 may be configured to make the cut surface formed by cutting the strip 1000 a plane, and the cut surface is perpendicular to two surfaces of the strip 1000 that are arranged opposite to each other along its thickness direction.

[0103] That is, the cutting device 120 of this example cuts the strip 1000 along a straight direction parallel to the axial direction of the roller 110. The cutting device 120 can be implemented by using wire cutting technology, laser cutting technology, etc.

[0104] Compared with cutters with irregular shapes such as sawtooth shapes, this embodiment enables the cutting device 120 to cut the strip 1000 to form a flat cut end, that is, the cut end is flat, which has a positive effect on the image recognition unit accurately identifying the cut end (that is, the tail end), and thus has a favorable effect on improving the reliability of the roll changing and winding operations.

[0105] According to some embodiments of this application, please refer to Figure 2 、 Figures 5 to 10 The cutting device 120 may specifically include a second actuator 121, a flat cutter 122, and a second linear rail assembly 123. The thickness direction of the flat cutter 122 and the thickness direction of the strip 1000 are perpendicular to the axial direction of the roller 110. The second actuator 121 is connected to the flat cutter 122 via a second transmission mechanism to drive the flat cutter 122 to reciprocate along the axial direction of the roller 110. Figure 9 and Figure 10 As shown, the second linear rail assembly 123 includes a second fixed guide rail 1231 and a second slider 1232 that slides with the second fixed guide rail 1231. The extension direction of the second fixed guide rail 1231 is parallel to the axial direction of the roller 110, and the second slider 1232 is connected to the flat cutter 122.

[0106] For ease of understanding, in the various drawings of the present application, the axial direction of the roller 110 and the thickness direction of the flat cutter 122 are respectively shown as the X axis and the Y axis, and the X axis and the Y axis are perpendicular to each other.

[0107] In the initial state of the winding system of this embodiment, the flat cutter 122 may be located near one of the substrates, that is, the flat cutter 122 is away from the transport path of the strip 1000. During the execution of S14 and S24, the flat cutter 122 is controlled by the second actuator 121 to move closer to the strip 1000 to cut the strip 1000. After the execution of S14 and S24, the flat cutter 122 may be located at the initial state or may be moved to a position closer to the other substrate under the control of the second actuator 121.

[0108] The cutting device 120 is designed to include a flat cutter 122, which is used to cut the strip 1000. As a mechanical cutting tool, the flat cutter 122 has lower manufacturing and maintenance costs compared to wire cutting equipment and laser cutting equipment. Moreover, in this embodiment, the second linear rail assembly 123 provides a stable motion path for the flat cutter 122 to reciprocate along the axial direction of the roller 110, thereby reducing the possibility of shaking or deviation of the flat cutter 122 during movement. This ensures smoother movement of the flat cutter 122, enabling reliable cutting of the strip 1000 and effectively ensuring cutting quality.

[0109] Similar to the first actuator 150, the second actuator 121 can be a rotary actuator. In this example, the second transmission mechanism can be used to convert the rotary power provided by the rotary actuator into linear power. The second transmission mechanism can be a 90° steering reducer, and can be implemented using any of a worm gear mechanism, a screw-nut mechanism, a rack-and-pinion mechanism, a chain drive mechanism, a belt drive mechanism, etc. Alternatively, the second actuator 121 can also be a linear actuator.

[0110] According to some embodiments of the present application, the second transmission mechanism can be implemented by a belt transmission mechanism. Figure 2 、 Figures 5 to 10 In this example, the second transmission mechanism includes a driving wheel, a driven wheel, and a conveyor belt 124, which is tensioned between the driving and driven wheels. The driving wheel's axial direction is perpendicular to the extension direction of the second fixed guide rail 1231, and the conveyor belt 124 is looped around the outer circumference of the second linear rail assembly 123. The flat cutter 122 and the second slider 1232 are both connected to the conveyor belt 124, and the second slider 1232 and the flat cutter 122 are located on the same side of the second fixed guide rail 1231.

[0111] The material of the conveyor belt 124 can be a flexible material such as rubber, polyvinyl chloride, or a metal material such as steel. The axis of the driving wheel is parallel to the axis of the driven wheel, such as Figures 5 to 8As shown, the axes of the driving wheel and the driven wheel can be perpendicular to the X-axis and the Y-axis, that is, the axes of the driving wheel and the driven wheel extend in the vertical direction. Accordingly, the flat cutter 122 is disposed on the conveyor belt 124 and is located on one side of the second fixed guide rail 1231 along the Y-axis. In other embodiments not shown in the figures, the axes of the driving wheel and the driven wheel can also be parallel to the Y-axis. Accordingly, the flat cutter 122 is disposed on the conveyor belt 124 and is located on one side of the second fixed guide rail 1231 along the Z-axis, that is, the flat cutter 122 can be located on the lower side of the second fixed guide rail 1231.

[0112] The gravity of the horizontal cutter 122 connected to the conveyor belt 124 acts on the conveyor belt 124, which can easily cause the conveyor belt 124 to tip over or fall. In this embodiment, the conveyor belt 124 is also connected to the second slider 1232 of the second linear rail assembly 123. On the one hand, the second slider 1232 can provide support for the conveyor belt 124, reducing the risk of the conveyor belt 124 falling. On the other hand, the second slider 1232 can provide guidance for the conveyor belt 124, guiding the conveyor belt 124 to move along a predetermined trajectory, reducing the possibility of the conveyor belt 124 tipping over, twisting, or flipping. In general, the guiding and supporting functions of the second linear rail assembly 123 can improve the movement stability of the conveyor belt 124, which in turn can help ensure the smooth and stable movement of the horizontal cutter 122, thereby effectively ensuring the cutting quality.

[0113] According to some embodiments of the present application, the roll changing mechanism 100 may be further configured such that a vertical distance L between the cutting device 120 and the center of the movable pressing roller 130 abutting against the material roll 1100 of a preset roll diameter satisfies: 180 mm ≤ L ≤ 220 mm.

[0114] That is to say, when the winding system of this embodiment is in operation, if the material roll 1100 reaches the preset winding diameter during the winding process of the upper winding drum 200, such as Figure 3 Middle D and Figure 5 As shown, the vertical distance L between the center of the flat cutter 122 and the movable pressure roller 130 is greater than or equal to 180 mm and less than or equal to 220 mm. Figure 8 As shown, the vertical distance L between the flat cutter 122 and the center of the movable pressing roller 130 is also greater than or equal to 180 mm and less than or equal to 220 mm.

[0115] The value of L can be any one of 180 mm, 190 mm, 200 mm, 210 mm and 220 mm.

[0116] This embodiment makes the vertical distance between the cutting station and the center of the movable pressure roller 130 against the material roll 1100 of the preset roll diameter smaller. In this way, the length between the cutting point (i.e., the tail end of the material roll 1100) and the length between the movable pressure roller 130 and the material roll 1100 is smaller, that is, the length of the tail end is smaller. In this way, the length of the overhanging section generated can be made as small as possible, and the weight of the overhanging section will also be reduced accordingly, which can have a positive effect on reducing the wrinkling phenomenon of the overhanging section.

[0117] In the winding system disclosed herein, the movable pressing roller 130 can be configured to move in the vertical direction to switch between the upper side of the strip 1000 and the lower side of the strip 1000, that is, to switch between driving the strip 1000 to be wound on the upper winding drum 200 and to be wound on the lower winding drum 300. Alternatively, please refer to Figure 2 、 Figures 5 to 8 The movable pressing roller 130 can also be configured to swing to switch between driving the strip 1000 to be wound on the upper winding drum 200 and to be wound on the lower winding drum 300.

[0118] According to some embodiments of the present application, in embodiments in which the movable pressure roller 130 swings, the roll-changing mechanism 100 may further include a swing rod 131, one end of which is disposed on a central shaft 133 and the other end is connected to the movable pressure roller 130. The swing rod 131 can rotate forward or backward along with the central shaft 133. The movable pressure roller 130 is configured to adaptively adjust its position relative to the coil 1100 as the strip 1000 is wound, and can drive the swing rod 131 to adaptively rotate.

[0119] Among them, the winding system may also include a driver 132, which is connected to the central shaft 133 through a third transmission mechanism 134, so as to drive the central shaft 133 to rotate forward or reverse, thereby driving the rocker arm 131 and the movable pressure roller 130 connected to the rocker arm 131 to swing back and forth. Forward rotation refers to the clockwise rotation of the central shaft 133 around its own center, and conversely, reverse rotation refers to the counterclockwise rotation of the central shaft 133 around its own center. The driver 132 can be implemented as a stepper motor, a servo motor, etc. The driver 132 is used to provide rotational power, and the third transmission mechanism 134 can use a gear transmission mechanism, a chain transmission mechanism, etc. Among them, the chain transmission mechanism can be suitable for power transmission over longer distances. When a chain transmission mechanism is used as the third transmission mechanism 134, such as Figure 5 As shown, the driver 132 can be disposed close to the first fixed rack 1421 to facilitate compactness.

[0120] exist Figure 3 In the process of winding the strip 1000, the upper winding drum 200 rotates counterclockwise, and as the diameter of the roll 1100 increases, the movable pressure roller 130 moves accordingly, and the rocker 131 rotates forward to adjust the self-adaptively. Figure 4In the process of winding the strip 1000, the lower winding drum 300 rotates clockwise. As the diameter of the coil 1100 increases, the movable pressure roller 130 moves accordingly, and the rocker 131 rotates in the opposite direction for adaptive adjustment.

[0121] Compared to the vertical movement of the movable pressure roller 130, the mechanism for achieving the swinging motion of the movable pressure roller 130 is relatively compact and requires a smaller range of motion. Furthermore, by designing the movable pressure roller 130 to adaptively adjust its position and drive the swing rod 131 to adaptively rotate during the winding process of the strip 1000, the movable pressure roller 130 is ensured to maintain contact with the outer circumference of the coil 1100 during the winding process of the strip 1000. This allows the movable pressure roller 130 to provide stable and uniform pressure on the coil 1100 during the winding process of the strip 1000, reducing the possibility of uneven pressure on the coil 1100 due to changes in the coil diameter. This prevents the coil 1100 from being too loose or too tight, helps improve the quality of the coil 1100, and reduces the problem of intermittent winding caused by uneven pressure, which is conducive to improving winding efficiency.

[0122] According to some embodiments of this application, please continue to refer to Figure 3 and Figure 4 The roll-changing mechanism 100 may further include a clamping roller 180 that can be raised and lowered relative to the feed roller 110. The clamping roller 180 is disposed opposite and parallel to the feed roller 110, and the clamping roller 180 and the feed roller 110 are respectively located on either side of the strip 1000. The clamping roller 180 is configured to move vertically until it abuts against the strip 1000 when the roll 1100 wound by one of the upper winding drum 200 and the lower winding drum 300 reaches a predetermined roll diameter. Furthermore, the cutting device 120 is configured to cut the strip 1000 when the roll 1100 wound by one of the upper winding drum 200 and the lower winding drum 300 reaches a predetermined roll diameter and the clamping roller 180 and the feed roller 110 jointly clamp the strip 1000.

[0123] The two ends of the clamping roller 180 are connected to the two substrates respectively. That is, the clamping roller 180 is installed on the frame 140. Therefore, the clamping roller 180 can be regarded as a component unit of the roll changing mechanism 100, so that it can be raised and lowered with the frame 140. The clamping roller 180 can also move up and down independently relative to the substrates.

[0124] During the operation of the winding system of this embodiment, the clamping roller 180 is not in contact with the strip 1000 in the initial state. When the upper winding drum 200 is performing the winding step, step S18 can also be performed after S13 and before S14.

[0125] S18 , controlling the clamping roller 180 to move to abut against the strip 1000 , so that the clamping roller 180 and the passing roller 110 clamp the strip 1000 together.

[0126] When executing the winding step of the lower winding drum 300, before S22, the clamping roller 180 can also be controlled to return to a position where it does not contact the strip 1000. After S23 and before S24, step S28 can also be executed.

[0127] S28 , controlling the clamping roller 180 to move to abut against the strip 1000 , so that the clamping roller 180 and the passing roller 110 clamp the strip 1000 together.

[0128] By designing a liftable clamping roller 180, the tension of the strip 1000 can be controlled by adjusting the position of the clamping roller 180. Specifically, during the winding process of the strip 1000, if the coil 1100 has not reached the preset coil diameter, the clamping roller 180 and the strip 1000 are not in contact, that is, the clamping roller 180 and the roller 110 do not clamp the strip 1000 together. In this way, the tension on the strip 1000 during the winding process is reduced, and friction is generated between the strip 1000 and the pressure roller during this process, which reduces the risk of wear of the strip 1000 and allows the strip 1000 to be smoothly wound onto the upper winding drum 200 or the lower winding drum 300. When the material roll 1100 reaches the preset winding diameter, the clamping roller 180 can be moved to clamp the strip 1000 together with the passing roller 110 before cutting the strip 1000. This not only allows the strip 1000 to remain tensioned when being cut, which is beneficial to improving the cutting accuracy and cutting effect, but also allows the strip 1000 to be clamped after being cut, reducing the possibility of the material head end formed after cutting naturally falling, so that the material head end can be smoothly pulled again between the upper winding drum 200 and the lower winding drum 300 for rewinding.

[0129] According to some embodiments of the present application, the clamping roller 180 may be further configured to be able to rotate forward or reverse around its own axis.

[0130] That is, in this example, the clamping roller 180 can not only move up and down independently relative to the substrate, but can also rotate independently relative to the substrate. During the operation of the winding system of this embodiment, step S18 can be executed after S13 and before S14; and after S14, step S19 can also be executed.

[0131] S19, controlling the clamping roller 180 to rotate around its own axis to drive the strip 1000 to be transported in the opposite direction of the conveying direction, so that the head end of the strip 1000 can be withdrawn to between the clamping roller 180 and the passing roller 110.

[0132] exist Figure 4 As shown in A, the pinch roller can rotate in the reverse direction so that the head end of the strip 1000 retreats to between the clamping roller 180 and the passing roller 110 to prepare for reel change and winding.

[0133] The specific implementation process of S21 can be as follows: control the movable pressure roller 130 to move to a position closer to the upper winding drum 200 than the roller 110, so that the movable pressure roller 130 switches to the upper side of the strip 1000; then control the clamping roller 180 to rotate around its own axis to drive the strip 1000 to be transported in the conveying direction; then pull the head end of the strip 1000 between the upper winding drum 200 and the lower winding drum 300. Figure 4 As shown in center A, the pinch roller 180 can rotate in the forward direction to convey the strip 1000 forward.

[0134] This embodiment enables the clamping roller 180 to rotate forward or reverse. After cutting the strip 1000, the clamping roller 180 can be used to drive the head end of the strip 1000 back to between the clamping roller 180 and the passing roller 110 to prepare for the next roll change and winding, and the clamping roller 180 can be used to drive the head end of the strip 1000 to be transported forward.

[0135] According to some embodiments of this application, please combine Figures 2 to 8 ,as well as Figure 11 The reel-changing mechanism 100 may further include a traction mechanism 190, located downstream of the cutting device 120 along the conveying direction of the strip 1000. The traction mechanism 190 can reciprocate along a predetermined horizontal direction, which is perpendicular to the axial direction of the roller 110 and is the Y-axis. When the cutting device 120 cuts the strip 1000, the movable pressure roller 130 moves to the other side of the strip 1000, and the traction mechanism 190 then moves along the predetermined horizontal direction to pull the leading end of the strip 1000 between the upper and lower winding drums 200 and 300.

[0136] The traction mechanism 190 can also be regarded as a component unit of the roll changing mechanism 100 , that is, the traction mechanism 190 can move in the up and down directions along with the random frame 140 .

[0137] When the winding system of this embodiment is in operation, the specific implementation process of the above-mentioned step S21 may be: controlling the movable pressure roller 130 to move to a position closer to the upper winding drum 200 than the passing roller 110, so that the movable pressure roller 130 switches to the upper side of the strip 1000; then controlling the traction mechanism 190 to translate along the conveying direction of the strip 1000 to approach the passing roller 110, until it reaches the material head end position of the strip 1000 and clamps the material head end of the strip 1000; then controlling the traction mechanism 190 to translate along the conveying direction of the strip 1000 to move away from the passing roller 110, and pulling the material head end of the strip 1000 to between the upper winding drum 200 and the lower winding drum 300.

[0138] After the strip 1000 is cut, a traction mechanism 190 is used to provide traction to the strip 1000, allowing it to continue to be transported and wound. Compared to the manual pulling of the strip 1000 between the upper winding drum 200 and the lower winding drum 300, this embodiment reduces manual intervention, improves production efficiency, and increases the degree of automation of the winding process.

[0139] The traction mechanism 190 can be implemented in various ways. For example, the traction mechanism 190 can include two traction rollers disposed vertically opposite each other, the two traction rollers being able to move closer to each other to clamp the end of the material head or farther away from each other to release the end of the material head, and the two traction rollers being able to rotate about their own axes to drive the strip 1000 to move.

[0140] According to some embodiments of this application, please combine Figures 5 to 8 ,as well as Figure 11 The traction mechanism 190 can also be specifically configured to include a connected parallel clamp 191 and a flexible clamp 192. The two clamping fingers of the parallel clamp 191 can be opened and closed in the vertical direction, so that the flexible clamp 192 can clamp the head end of the strip 1000 or release the head end of the strip 1000.

[0141] Depending on the power source, the parallel gripper 191 can be any of a pneumatic parallel gripper, an electric parallel gripper, or a hydraulic parallel gripper. The flexible chuck 192 can specifically include two opposing flexible plates, each connected to the two gripping fingers of the parallel gripper 191 in a one-to-one correspondence, so that the two gripping fingers move closer or further away from each other. The flexible chuck 192 can be made of any one or more materials, including rubber, polyimide (PI), and polyethylene terephthalate (PET).

[0142] In this embodiment, the traction mechanism 190 uses a flexible clamp 192 to clamp the strip 1000. Thanks to the flexible nature of the flexible clamp 192, the friction between the traction mechanism 190 and the strip 1000 is reduced when the traction mechanism 190 pulls the strip 1000, which helps to reduce the risk of wear of the strip 1000.

[0143] As an alternative example, please refer to Figure 2 、 Figures 5 to 8 The reel-changing mechanism 100 may also be configured to include a slide bar 141, which is parallel to the roller 110. The traction mechanism 190 is disposed on the slide bar 141 and is capable of sliding along the slide bar 141. In this way, the slide bar 141 not only provides mounting and support for the traction mechanism 190, but also enables the traction mechanism 190 to move along the X-axis. Based on this, when the reeling system of this embodiment is in operation, the position of the traction mechanism 190 can be adjusted by sliding the traction mechanism 190 along the slide bar 141, allowing the traction mechanism 190 to accurately and reliably clamp the leading end of the strip 1000.

[0144] Among them, the traction mechanism 190 can also include a sliding mounting block 194, which is sleeved on the slide rod 141 and can slide along the slide rod 141. The end of the parallel clamp 191 away from the flexible clamp 192 is fixedly connected to the sliding mounting block 194 so that it can slide with the sliding mounting block 194.

[0145] The number of the slide bars 141 may be, but is not limited to, 1, and may also be 2, 3, etc., that is, there may be multiple slide bars 141. Figures 5 to 8 As shown, there are two slide bars 141, the two slide bars 141 are parallel to each other, and the sliding mounting block 194 is simultaneously sleeved on the two slide bars 141. It can be understood that the two slide bars 141 can be arranged at intervals along the up and down directions, or can be arranged at intervals along the Y-axis direction.

[0146] According to some embodiments of the present application, the upper winding drum 200, the lower winding drum 300, and the traction mechanism 190 are of equal number and may be multiple. The multiple upper winding drums 200 are coaxially arranged and spaced apart along the direction in which their axes extend. The multiple lower winding drums 300 are coaxially arranged and spaced apart along the direction in which their axes extend. The multiple traction mechanisms 190 are all disposed on the slide bar 141.

[0147] exist Figure 2 、 Figures 5 to 8 In the embodiment, there are two traction mechanisms 190, namely, two upper winding drums 200 and two lower winding drums 300. Each traction mechanism 190 can pull a strip 1000 between one upper winding drum 200 and one lower winding drum 300. In an embodiment not shown in the figure, the number of traction mechanisms 190 can also be three, four, or more.

[0148] This embodiment utilizes multiple upper winding drums 200 and lower winding drums 300. This allows multiple upper winding drums 200 to wind simultaneously. Once the roll 1100 wound on each upper winding drum 200 reaches a preset diameter, the rolls can be switched to the multiple lower winding drums 300 for simultaneous winding. This significantly improves winding efficiency and production efficiency. Furthermore, multiple traction mechanisms 190 are designed to ensure that the strip 1000 can be positioned between each upper winding drum 200 and the corresponding lower winding drum 300.

[0149] In order to enable the traction mechanism 190 to move along the preset horizontal direction Y axis, the traction mechanism 190 can also include two mounting plates 145, and the two ends of the sliding rod 141 are respectively connected to the two mounting plates 145, and the two mounting plates 145 are respectively movably connected to the two base plates of the frame 140.

[0150] There are various ways to implement the mounting plate 145 to move relative to the frame 140 along the Y-axis direction. Figure 2 、 Figures 5 to 8 As shown, the traction mechanism 190 may further include an optical axis 144 and a third actuator 193. The ends of the optical axis 144 are respectively connected to two mounting plates 145. The third actuator 193 is fixed to the optical axis 144 and is in transmission connection with the mounting plates 145 via a fourth transmission mechanism, thereby driving the mounting plates 145 to move. The fourth transmission mechanism may be implemented as a second fixed rack 143 and a second rotating gear (not shown). The second fixed rack 143 extends along the Y-axis and is fixedly mounted on the base plate. The first rotating gear 1422 is connected to the mounting plates 145 and can rotate relative to the mounting plates 145 under the drive of the third actuator 193. The second fixed rack 143 and the second rotating gear mesh in a transmission manner, allowing the second rotating gear to roll relative to the second fixed rack 143 along the Y-axis. In this embodiment, the second rotating gear requires less space for movement, which facilitates a compact roll-changing mechanism 100 and facilitates stroke control. Furthermore, in this example, the third actuator 193 can move along the Y-axis direction accordingly.

[0151] Of course, in other embodiments of the present application, the third actuator 193 can also be set as any one of a linear motor, a cylinder, and a hydraulic cylinder, and the third actuator 193 is fixedly installed on the frame 140 to drive the traction mechanism 190 to move.

[0152] According to some embodiments of this application, please continue to refer to Figure 2 、 Figures 5 to 8 The roll changing mechanism 100 can also be configured to include a frame 140 and a third linear rail assembly 170. The third linear rail assembly 170 includes a third fixed guide rail 171 and a third slider 172 that slides with the third fixed guide rail 171. The third fixed guide rail 171 extends along a preset horizontal direction Y-axis and is fixedly arranged on the frame 140. The traction mechanism 190 is connected to the third slider 172.

[0153] The number of the third linear rail assembly 170 may be, but is not limited to, 1, 2, 3, etc. The third slider 172 may be connected to the mounting plate 145 .

[0154] This embodiment enables the third linear rail assembly 170 to provide a stable motion path for the reciprocating translation of the traction mechanism 190, so as to reduce the possibility of shaking or offsetting of the traction mechanism 190 during translation, making the traction mechanism 190 move more smoothly, and also reducing the risk of local wear caused by the offset of the traction mechanism 190.

[0155] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0156] In a specific embodiment of the present application, Figure 2 、 Figures 5 to 11 As shown, the present application proposes a winding system for winding a strip material 1000 , which includes an upper winding drum 200 and a lower winding drum 300 rotatable around their own axes, and a roll changing mechanism 100 .

[0157] There are two upper take-up drums 200 and two lower take-up drums 300. The two upper take-up drums 200 are coaxial and spaced apart along the X-axis, while the two lower take-up drums 300 are coaxial and spaced apart along the X-axis. Each upper take-up drum 200 and each lower take-up drum 300 are vertically opposed and spaced apart. The axes of the upper take-up drums 200 and the lower take-up drums 300 extend horizontally, with the extension direction shown as the X-axis.

[0158] The roll-changing mechanism 100 includes a frame 140, and mounted thereon are a feed roller 110, a clamping roller 180, a cutting device 120, a swing arm 131, a movable pressure roller 130, and a traction mechanism 190. The frame 140 comprises two parallel base plates spaced apart along the X-axis of the feed roller 110. The feed roller 110, the cutting device 120, and the movable pressure roller 130 are arranged sequentially along the conveying direction of the strip 1000.

[0159] A first actuator 150 is installed on the frame 140, and the frame 140 is also provided with a first rotating gear 1422. The first rotating gear 1422 can rotate around its own axis relative to the frame 140 under the driving action of the first actuator 150. The first rotating gear 1422 is engaged with a first fixed rack 1421 for transmission, so that the first rotating gear 1422 can roll in the vertical direction relative to the first fixed rack 1421, thereby making the roll changing mechanism 100 have an upper winding station, a lower winding station and an intermediate station, and the intermediate station is between the upper winding station and the lower winding station.

[0160] The cutting device 120 includes two mounting blocks 125, a second actuator 121, a flat cutter 122, and a belt drive mechanism. The driving and driven pulleys of the belt drive mechanism are mounted on the two mounting blocks 125, respectively. The two mounting blocks 125 are connected to the two base plates, respectively. The axes of the driving and driven pulleys are perpendicular to the X and Y axes. The second actuator 121 is used to drive the driving pulleys to rotate. A conveyor belt 124 is tensioned around the driving and driven pulleys. The flat cutter 122 is connected to the conveyor belt 124.

[0161] One end of the swing arm 131 is attached to a central shaft 133, and the other end is connected to the movable pressure roller 130. The central shaft 133 is parallel to the roller 110 and is connected to a driver 132 via a chain drive mechanism. Driver 132 is used to drive the central shaft 133 in forward or reverse rotation, thereby driving the swing arm 131 and the movable pressure roller 130 connected to the swing arm 131 to swing back and forth. Driver 132 is also fixed to the base plate. The movable pressure roller 130 adaptively adjusts its position relative to the coil 1100 as the strip 1000 is wound, driving the swing arm 131 to adaptively rotate.

[0162] The clamping roller 180 is located below the passing roller 110 and is parallel to the passing roller 110. The clamping roller 180 and the passing roller 110 are respectively located on both sides of the strip 1000. The clamping roller 180 is mounted on the frame 140 and can move up and down independently relative to the frame 140 and can rotate independently relative to the frame 140.

[0163] The traction mechanism 190 includes a sliding mounting block 194, a parallel clamp 191 fixedly connected to the sliding mounting block 194, and a flexible clamp 192 connected to the parallel clamp 191. The two clamping fingers of the parallel clamp 191 can open and close vertically to drive the flexible clamp 192 to clamp or release the starting end of the strip 1000. The sliding mounting block 194 is slidably mounted on two slide rods 141. The ends of the slide rods 141 are respectively connected to two mounting plates 145. The two mounting plates 145 are respectively connected to the two base plates of the frame 140 and can move relative to the frame 140 along the Y-axis. The traction mechanism 190 is provided with two. A second fixed rack 143 is fixedly mounted on each of the two base plates, extending along the Y-axis. Each of the two mounting plates 145 is equipped with a second rotating gear. Driven by a third actuator 193, the second rotating gear can rotate about its own axis relative to the mounting plate 145. The second rotating gear meshes with the second fixed rack 143, allowing the second rotating gear to roll relative to the second fixed rack 143 along the Y-axis. The third actuator 193 is a pneumatic cylinder fixed to an optical axis 144 extending along the X-axis. The ends of the optical axis 144 are connected to the two mounting plates 145, respectively. The cylinder is connected to the second rotating gear via a 90° reduction gear.

[0164] Furthermore, the winding system also includes a first linear rail assembly 160, which includes a first fixed guide rail 161 and a first slider 162. The first fixed guide rail 161 extends in a vertical direction, the first slider 162 is fixedly connected to the base plate, and the first slider 162 is slidably connected to the first fixed guide rail 161.

[0165] Furthermore, the cutting device 120 also includes a second linear rail assembly 123, the second linear rail assembly 123 includes a second fixed guide rail 1231 and a second slider 1232 that slides with the second fixed guide rail 1231, the second fixed guide rail 1231 extends along the X-axis direction, the two ends of the second fixed guide rail 1231 are respectively connected to the two mounting seats 125, the second slider 1232 is connected to the conveyor belt 124, and the second slider 1232 and the flat cutter 122 are located on the same side of the second fixed guide rail 1231.

[0166] Furthermore, the roll changing mechanism 100 also includes two third linear rail assemblies 170, the third linear rail assembly 170 includes a third fixed guide rail 171 and a third slider 172 that slides with the third fixed guide rail 171, the third fixed guide rails 171 of the two third linear rail assemblies 170 are fixedly connected to the two substrates in a one-to-one correspondence, the third fixed guide rail 171 extends along the Y-axis direction, and the third sliders 172 of the two third linear rail assemblies 170 are fixedly connected to the two mounting plates 145 in a one-to-one correspondence.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A winding system for winding strip material, characterized in that: The winding system comprises: The upper winding drum and the lower winding drum are arranged opposite to each other and spaced apart in the vertical direction and can rotate around their own axes; The reel-changing mechanism comprises a clamping roller, a passing roller, a cutting device, a movable pressure roller and a traction mechanism which are sequentially arranged along the conveying direction of the strip; the clamping roller is arranged opposite to and parallel to the passing roller, the clamping roller and the passing roller are respectively located on both sides of the strip, the clamping roller can be raised and lowered relative to the passing roller, the clamping roller is configured to vertically move to abut against the strip when the roll wound by one of the upper winding drum and the lower winding drum reaches a preset roll diameter, and the clamping roller is configured to be able to rotate forward or reversely around its own axis; the movable pressure roller is located between the upper winding drum and the lower winding drum; the traction mechanism can reciprocate along a preset horizontal direction, and the preset horizontal direction is perpendicular to the axial direction of the passing roller; The traction mechanism further moves along the preset horizontal direction to be used for pulling the material end of the strip between the upper take-up drum and the lower take-up drum, and the movable pressure roller is used to drive the strip to be wound around the other of the upper take-up drum and the lower take-up drum; Furthermore, during the process in which the upper winding drum and the lower winding drum rotate to wind the strip into the material roll, and the cutting device cuts the strip, the movable pressing roller remains tangent to the material roll.

2. The winding system according to claim 1, characterized in that: The roll changing mechanism is configured to be liftable, and the roll changing mechanism has an upper winding station, a lower winding station and an intermediate station, and the intermediate station is located between the upper winding station and the lower winding station; At the upper winding station, the vertical distance between the passing roller and the upper winding drum is smaller than the vertical distance between the passing roller and the lower winding drum, and the movable pressure roller is used to drive the strip to be wound on the upper winding drum; At the lower winding station, the vertical distance between the passing roller and the upper winding drum is greater than the vertical distance between the passing roller and the lower winding drum, and the movable pressure roller is used to drive the strip to be wound on the lower winding drum.

3. The winding system according to claim 2, characterized in that: The roll-changing mechanism further includes a frame and a first actuator, wherein the first actuator, the roller, the cutting device and the movable pressing roller are all arranged on the frame; the first actuator is connected to the frame via a first transmission mechanism to drive the frame to rise and fall; Among them, the first transmission mechanism includes a first fixed rack and a first rotating gear; the first fixed rack extends in the vertical direction; the first rotating gear is connected to the frame and can rotate around its own axis relative to the frame under the driving action of the first actuator; the first fixed rack and the first rotating gear are engaged in transmission, so that the first rotating gear can roll in the vertical direction relative to the first fixed rack.

4. The winding system according to claim 3, characterized in that: It also includes a first linear rail assembly, which includes a first fixed guide rail and a first slider. The first fixed guide rail extends in a vertical direction, the first slider is connected to the frame, and the first slider is slidably connected to the first fixed guide rail.

5. The winding system according to claim 1, wherein: The cutting device is configured to cut the strip to form a plane cut surface, and the cut surface is perpendicular to two surfaces of the strip that are arranged opposite to each other along its thickness direction.

6. The winding system according to claim 5, characterized in that: The cutting device includes a second actuator, a flat cutter, and a second linear rail assembly. The thickness direction of the flat cutter and the thickness direction of the strip are perpendicular to the axial direction of the roller. The second actuator is connected to the flat cutter through a second transmission mechanism to drive the flat cutter to reciprocate along the axial direction of the roller. The second linear rail assembly includes a second fixed guide rail and a second slider that slides with the second fixed guide rail. The extension direction of the second fixed guide rail is parallel to the axial direction of the roller. The second slider is connected to the horizontal cutter.

7. The winding system according to claim 6, characterized in that: The second transmission mechanism is a belt transmission mechanism, comprising a driving wheel, a driven wheel and a conveyor belt, wherein the conveyor belt is tensioned on the driving wheel and the driven wheel; The axial direction of the driving wheel is perpendicular to the extension direction of the second fixed guide rail, and the conveyor belt is arranged on the outer periphery of the second linear rail assembly; the horizontal cutter and the second slider are both connected to the conveyor belt, and the second slider and the horizontal cutter are located on the same side of the second fixed guide rail.

8. The winding system according to claim 5, wherein: When the material roll wound by one of the upper winding drum and the lower winding drum reaches the preset roll diameter, the vertical distance between the center of the movable pressure roller and the cutting device along the conveying direction of the strip is greater than or equal to 180 mm and less than or equal to 220 mm.

9. The winding system according to any one of claims 1 to 8, characterized in that: The roll changing mechanism further comprises a swing rod, one end of which is arranged on the central axis and the other end is connected to the movable pressure roller, and the swing rod can rotate forward or reverse along with the central axis; The movable pressing roller is configured to adaptively adjust its position relative to the material coil as the strip is wound, and can drive the swing rod to adaptively rotate.

10. The winding system according to any one of claims 1 to 8, characterized in that: The traction mechanism includes a parallel clamp and a flexible clamp connected to each other. The two clamping fingers of the parallel clamp can be opened and closed in the vertical direction, so that the flexible clamp can clamp the head end of the strip or release the head end of the strip.

11. The winding system according to any one of claims 1 to 8, characterized in that: The roll changing mechanism also includes a frame and a third linear rail assembly, the third linear rail assembly includes a third fixed guide rail and a third slider slidingly engaged with the third fixed guide rail, the third fixed guide rail extends along the preset horizontal direction and is fixedly arranged on the frame, and the traction mechanism is connected to the third slider.

12. The winding system according to any one of claims 1 to 8, characterized in that: The roll changing mechanism further comprises a slide bar, and the slide bar is parallel to the roller; The upper winding drum, the lower winding drum and the traction mechanism are of the same number and are all multiple; the multiple upper winding drums are coaxially arranged and spaced apart along the extension direction of their own axes, and the multiple lower winding drums are coaxially arranged and spaced apart along the extension direction of their own axes; The plurality of traction mechanisms are all arranged on the slide bar, and the traction mechanisms can slide along the slide bar.

13. A rolling device, characterized in that: The invention comprises two rollers arranged opposite to each other and a winding system as claimed in any one of claims 1 to 12.

14. A battery production system, characterized in that: The battery production system includes the winding system according to any one of claims 1 to 12, or the battery production system includes the rolling device according to claim 13.

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