Winding and unwinding device and battery cell manufacturing equipment

Abstract

The utility model discloses a winding and unwinding device and battery cell manufacturing equipment, and the winding and unwinding device comprises a winding part used for unwinding or winding a material roll; the supporting assembly is used for supporting the winding part; the position control assembly is movably connected with the supporting assembly and used for controlling the position of the winding part during working; the rotation driving assembly is used for driving the winding part to rotate; wherein the winding part is movably arranged on the supporting assembly. By applying the scheme, an integrated structure of the winding and unwinding device can be realized, the cost is saved, convenience and rapidness are realized, the production efficiency is greatly improved, and potential safety risks are eliminated.

Description

Technical Field

[0001] The utility model relates to the field of material roll reeling and unreeling, in particular to a reeling and unreeling device and battery core manufacturing equipment. Background Art

[0002] Many manufacturing processes involve the winding and unwinding of coils. For example, in lithium battery manufacturing, the electrode coils need to be wound and unwound. However, typical manual / semi-automatic reel-changing devices inflate an air shaft, causing the outer surface of the shaft, aluminum tiles, and rubber to evenly expand and secure the outer surface reel. The motor then rotates the air shaft to retract and unwind the electrode coils. The air shaft is primarily powered by high-pressure gas, controlling the raised surface of the shaft through inflation and deflation, thereby controlling the surface tension of the shaft.

[0003] Manual or semi-automatic reel-changing devices using air shafts require the shaft to be removed when changing the top coil, a relatively cumbersome process. Furthermore, manual lifting of the shaft is required for manual reel-changing devices, which poses a quality risk of damage to the top coil and a safety risk of injury from falling air shafts. Therefore, mitigating potential risks in the manufacturing process is a critical issue that needs to be addressed in the reeling and unreeling process. Utility Model Content

[0004] To this end, the present invention provides a winding and unwinding device and a battery cell manufacturing device, in an effort to solve or at least alleviate at least one of the above problems.

[0005] According to one aspect of the utility model, a winding and unwinding device is provided, comprising: a winding portion for releasing or retracting a material roll; a support assembly for supporting the winding portion; a position control assembly movably connected to the support assembly for controlling the position of the winding portion during operation; and a rotation drive assembly for driving the winding portion to rotate; wherein the winding portion is movably arranged on the support assembly.

[0006] Optionally, the support assembly includes a first support portion and a second support portion, the first support portion is used to support the first end of the winding portion, and the second support portion is used to support the second end of the winding portion.

[0007] Optionally, the rotation drive assembly includes a first rotation drive unit and a second rotation drive unit, the first rotation drive unit is arranged on the first support unit and connected to the first end of the winding unit, and the second rotation drive unit is arranged on the second support unit and connected to the second end of the winding unit.

[0008] Optionally, the position control assembly includes a first position control portion and a second position control portion, the first position control portion is movably connected to the first support portion, and the second position control portion is movably connected to the second support portion.

[0009] Optionally, the first end of the position control component is movably connected to the support component via a first fixing component, and the second end of the position control component is movably connected to the support component via a second fixing component; optionally, the first fixing component is a rotating shaft fixing structure, and the second fixing component is a snap-fit fixing structure.

[0010] Optionally, the rotation drive assembly also includes a third rotation drive unit and a fourth rotation drive unit, the first support unit is also connected to the first end of the winding unit through the third rotation drive unit, and the second support unit is also connected to the second end of the winding unit through the fourth rotation drive unit, and the winding unit rotates under the joint control of the first rotation drive unit, the second rotation drive unit, the third rotation drive unit and the fourth rotation drive unit.

[0011] Optionally, each of the first position control unit and the second position control unit includes a main body and a passive rotating unit. When in operation, the main body is connected to the winding unit through the passive rotating unit. The passive rotating unit is used to control the position of the winding unit during operation and rotate under the drive of the winding unit.

[0012] Optionally, each of the first supporting portion and the second supporting portion includes an accommodating space for accommodating at least a portion of the winding portion and the rotation drive assembly.

[0013] Optionally, the rewinding and unwinding device further includes a base and a drive control assembly, the support assembly is arranged on the base, and the drive control assembly is connected to the rotation drive assembly for controlling the rotation drive assembly to drive the winding portion to rotate.

[0014] According to another aspect of the present invention, a battery cell manufacturing device is provided, comprising a conveying device and the above-mentioned reeling and unreeling device, wherein the reeling and unreeling device is used to release or retract the material roll conveyed by the conveying device.

[0015] The present invention provides a reeling and unwinding device comprising: a winding portion for releasing or retracting a roll; a support assembly for supporting the winding portion; a position control assembly movably connected to the support assembly for controlling the position of the winding portion during operation; and a rotation drive assembly for rotating the winding portion; wherein the winding portion is movably mounted on the support assembly. This reeling and unwinding device eliminates the use of an inflatable shaft, achieving an integrated structure, saving costs, providing convenience and speed, significantly improving production efficiency, and eliminating potential safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic structural diagram of a reeling and unreeling device according to an embodiment of the present invention is shown;

[0018] Figure 2 A top view of a reeling and unreeling device according to an embodiment of the present invention is shown;

[0019] Figure 3 Shown is a diagram according to an embodiment of the present invention. Figure 2 The cross-sectional structural diagram of the rewinding and unwinding device at AA' is shown;

[0020] Figure 4 A partial structural diagram of a reeling and unreeling device according to an embodiment of the present invention is shown;

[0021] Figure 5 Shows a left side view of a reeling and unreeling device according to one embodiment of the present utility model;

[0022] Figure 6 A right side view of a reeling and unreeling device according to an embodiment of the present invention is shown.

[0023] The accompanying drawings are as follows:

[0024] 10. Rewinding and unwinding device; 11. Winding part; 12. Support assembly; 121. First supporting part; 122. Second supporting part; 1210. First side wall; 1211. Second side wall; 13. Position control assembly; 131. First position control part; 132. Second position control part; 1301. Main body; 1302. Passive rotating part; 141. First rotation driving part; 142. Second rotation driving part; 143. Third rotation driving part; 144. Fourth rotation driving part; 15. Base; 161. First drive control part; 162. First drive control fixing part; 171. First fixing part; 172. Second fixing part; 173. Third fixing part; 174. Fourth fixing part; 1811. First gear of the first gear group; 1812. Second gear of the first gear group; 1821. First gear of the third gear group; 1822. Second gear of the third gear group. DETAILED DESCRIPTION

[0025] The following describes exemplary embodiments of the present application in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0026] like Figure 1As shown, an embodiment of the present invention provides a winding and unwinding device 10, comprising: a winding portion 11 for releasing or retracting a material roll; a support assembly 12 for supporting the winding portion 11; a position control assembly 13 movably connected to the support assembly 12 for controlling the position of the winding portion 11 during operation; and a rotation drive assembly for driving the winding portion 11 to rotate; wherein the winding portion 11 is movably arranged on the support assembly 12. The winding and unwinding device 10 of the present invention embodiment eliminates the use of an inflatable shaft, and supports and fixes the winding portion 11 through the support assembly 12 and the position control assembly 13, and achieves stable winding and unwinding under the action of the rotation drive assembly, thereby realizing an integrated structure, saving costs, being convenient and quick, greatly improving production efficiency, and eliminating potential safety risks.

[0027] In manufacturing, winding and unwinding primarily involves taking up continuous products such as films, strips, monofilaments, hoses, and coated wires, and applying them to a reel. In lithium battery manufacturing, this reel can include a pole reel. Specifically, the winding unit can be a reel.

[0028] In the embodiment of the present utility model, Figure 1 As shown, the support assembly 12 includes a first support portion 121 and a second support portion 122, wherein the first support portion 121 is used to support the first end of the winding portion 11, and the second support portion 122 is used to support the second end of the winding portion 11. Specifically, each of the first support portion 121 and the second support portion 122 includes a storage space, and the storage space is used to accommodate at least a portion of the winding portion 11 and the rotation drive assembly. Each of the first support portion 121 and the second support portion 122 also includes a recessed portion, and the two recessed portions are respectively used to place the two ends of the winding portion. Since the two ends of the winding portion also rotate during operation, in order to reduce the impact on the rotation, the two ends of the winding portion do not contact the two recessed portions.

[0029] In the embodiment of the present utility model, Figure 2 As shown, the rotation drive assembly includes a first rotation drive unit 141 and a second rotation drive unit 142. The first rotation drive unit 141 is arranged on the first support unit 121 and connected to the first end of the winding unit 11, and the second rotation drive unit 142 is arranged on the second support unit 122 and connected to the second end of the winding unit 11. In this way, when the winding unit 11 is in operation, it is in direct contact with the first rotation drive unit 141 and the second rotation drive unit 142. The winding unit 11 rotates under the drive of the first rotation drive unit 141 and the second rotation drive unit 142, thereby realizing winding and unwinding. Specifically, the first rotation drive unit 141 and the second rotation drive unit 142 are respectively arranged in the accommodation space of the first support unit 121 and the second support unit 122, so that the two rotation drive units can be protected.

[0030] The first rotation driving portion 141 and the second rotation driving portion 142 can specifically be driving wheels. The first support portion 121 and the second support portion 122 each include two opposing side walls. Corresponding placement openings are provided on the two opposing side walls of the same support portion. The ends of the driving wheel's rotational axis are respectively disposed in the corresponding placement openings. The rotation of the driving wheel is achieved by rotation of the rotational axis. To ensure stable rotation of the winding portion 11, the first rotation driving portion 141 and the second rotation driving portion 142 have the same rotational speed and direction during operation.

[0031] like Figure 1 As shown, the rewinding and unwinding device 10 also includes a base 15 and a drive control assembly. The support assembly 12 is disposed on the base 15. The drive control assembly is connected to the rotation drive assembly and is used to control the rotation drive assembly to drive the winding portion 11 to rotate. Specifically, the first support portion 121 and the second support portion 122 are disposed on the base 15 and are maintained at a certain distance. The distance between the first support portion 121 and the second support portion 122 can be determined based on the size of the winding portion 11.

[0032] In the embodiment of the present utility model, the drive control component can be specifically arranged on the base 15. Figure 1-2 As shown, the drive control component includes a first drive control unit 161 and a second drive control unit (not shown in the figure). The first drive control unit 161 is connected to the first rotation drive unit 141 and is used to control the first rotation drive unit 141 to rotate. The second drive control unit is connected to the second rotation drive unit 142 and is used to control the second rotation drive unit 142 to rotate. Specifically, the first drive control unit 161 is connected to the rotation shaft of the first rotation drive unit 141 through a first gear set. The second drive control unit is connected to the rotation shaft of the second rotation drive unit 142 through a second gear set. Figure 1-2 As shown, the drive control component also includes a first drive control fixing part 162 and a second drive control fixing part (not shown in the figure), the first drive control fixing part 162 is used to fix the first drive control part 161 on the base 15, and the second drive control fixing part is used to fix the second drive control part on the base 15.

[0033] like Figure 1 As shown, the position control assembly 13 includes a first position control portion 131 and a second position control portion 132. The first position control portion 131 is movably connected to the first support portion 121, and the second position control portion 132 is movably connected to the second support portion 122. Specifically, the first end of the position control assembly 13 is movably connected to the support assembly 12 via the first fixing assembly, and the second end of the position control assembly 13 is movably connected to the support assembly 12 via the second fixing assembly. Figure 1-3As shown, the first fixing assembly includes a first fixing portion 171 and a second fixing portion 172 , and the second fixing assembly includes a third fixing portion 173 and a fourth fixing portion 174 .

[0034] like Figure 1-3 As shown, the first end of the first position control portion 131 is movably connected to the first side wall 1210 of the first support portion 121 via the first fixing portion 171, and the second end of the first position control portion 131 is movably connected to the second side wall 1211 of the first support portion 121 via the third fixing portion 173. The first side wall 1210 and the second side wall 1211 of the first support portion 121 are opposite side walls. The first end of the second position control portion 132 is movably connected to the first side wall of the second support portion 122 via the second fixing portion 172, and the second end of the second position control portion 132 is movably connected to the second side wall of the second support portion 122 via the fourth fixing portion 174. The first side wall and the second side wall of the second support portion 122 are opposite side walls.

[0035] In the embodiment of the present invention, the first fixing component is a rotating shaft fixing structure, and the second fixing component is a clamping fixing structure. Figure 1-3 As shown, the first fixing portion 171 and the second fixing portion 172 are both rotating shaft fixing structures, and the third fixing portion 173 and the fourth fixing portion 174 are both snap-fit fixing structures. Of the two objects connected by the rotating shaft fixing structure, one object is fixed in position, and the other object can rotate around the rotating shaft. The two objects connected by the snap-fit fixing structure are fixedly connected by snapping or snapping. It should be noted that the position control component 13 and the support component 12 can be a detachable connection method, that is, the position control component 13 can be removed from the support component 12 when not working. Specifically, the first fixing component and the second fixing component can both be snap-fit fixing structures.

[0036] like Figure 2-3 As shown, the rotation drive assembly further includes a third rotation drive unit 143 and a fourth rotation drive unit 144. The third rotation drive unit 143 is also disposed on the first support portion 121 and connected to the first end of the winding portion 11. The fourth rotation drive unit 144 is also disposed on the second support portion 122 and connected to the second end of the winding portion 11. The winding portion 11 rotates under the joint control of the first rotation drive unit 141, the second rotation drive unit 142, the third rotation drive unit 143, and the fourth rotation drive unit 144. To achieve stable rotation of the winding portion 11, the first rotation drive unit 141, the second rotation drive unit 142, the third rotation drive unit 143, and the fourth rotation drive unit 144 all have the same rotation speed and direction during operation.

[0037] The drive control assembly also includes a third drive control unit and a fourth drive control unit. The third drive control unit is connected to the third rotation drive unit 143 and is used to control the rotation of the third rotation drive unit 143. The fourth drive control unit is connected to the fourth rotation drive unit 144 and is used to control the rotation of the fourth rotation drive unit 144. Specifically, the third drive control unit is connected to the rotation shaft of the third rotation drive unit 143 via a third gear set. The fourth drive control unit is connected to the rotation shaft of the fourth rotation drive unit 144 via a fourth gear set. The third drive control unit and the first drive control unit can be the same, jointly controlling the rotation of the first rotation drive unit 141 and the third rotation drive unit 143. The fourth drive control unit and the second drive control unit can be the same, jointly controlling the rotation of the second rotation drive unit 142 and the fourth rotation drive unit 144.

[0038] In an embodiment of the present invention, at least one of the first gear set, the second gear set, the third gear set, and the fourth gear set includes a first gear, a second gear, and a gear connecting portion connecting the two gears, through which the first gear can drive the second gear to rotate. Figure 1-6 As shown, the first gear 1811 of the first gear group is connected to the first rotation driving unit 141, and the second gear 1812 of the first gear group is connected to the first drive control unit 161. The first gear of the second gear group is connected to the second rotation driving unit 142, and the second gear of the second gear group is connected to the second drive control unit. Figure 1-6 As shown, the first gear 1821 of the third gear group is connected to the third rotation driving unit 143, and the second gear 1822 of the third gear group is connected to the third drive control unit. The first gear of the fourth gear group is connected to the fourth rotation driving unit 144, and the second gear of the fourth gear group is connected to the fourth drive control unit.

[0039] Specifically, when the first drive control unit and the third drive control unit are the same (for example, Figure 1-6 When the first drive control unit 161 is in the middle, the first gear 1811 of the first gear group and the first gear 1821 of the third gear group are driven by the same drive control unit (for example, one of the first drive control unit and the third drive control unit), the second gear 1812 of the first gear group and the second gear 1822 of the third gear group are connected to the first gear 1811 of the first gear group and the first gear 1821 of the third gear group through different gear connecting parts, and rotate under the drive of their respective corresponding gear connecting parts, as shown in FIG. Figure 1-6 As shown, the first rotation driving part 141 and the third rotation driving part 143 can move synchronously to achieve the same rotation speed and rotation direction during operation, and the synchronous movement of the second rotation driving part 142 and the fourth rotation driving part 144 is similar and will not be described in detail here.

[0040] like Figure 3As shown, each of the first position control unit 131 and the second position control unit 132 includes a main body 1301 and a passive rotating unit 1302. During operation, the main body 1301 is connected to the winding unit 11 via the passive rotating unit 1302. The passive rotating unit 1302 is used to control the position of the winding unit 11 during operation and rotate under the drive of the winding unit 11. Specifically, the main body 1301 includes an opening portion, and the passive rotating unit 1302 is arranged at the opening portion. The two ends of the rotating shaft of the passive rotating unit 1302 are respectively connected to the two opposite inner walls of the opening portion. Furthermore, the opening portion can be a frame structure, and the passive rotating unit 1302 is a roller structure. When the roller is housed in the frame, it partially protrudes out of the frame in a direction perpendicular to the rotating shaft, so that it can be close to the reel and roll with the reel, not only achieving the position limit of the winding unit 11, but also ensuring the stability of the winding unit 11 during rolling.

[0041] The following combination Figure 1-6 , the method for performing the unwinding and winding operation of the unwinding and winding device 10 in the embodiment of the utility model is described in detail: when the unwinding and winding device 10 is not working, the second fixing component connecting the position control component and the support component is open, so that the winding portion 11 can be removed from the unwinding and winding device 10. When the unwinding and winding device 10 is to work, the second fixing component connecting the position control component 13 and the support component 12 can be opened, and then the winding portion 11 can be supported by the support component 12. Specifically, the winding portion 11 is placed on the first rotating drive portion 141, the second rotating drive portion 142, the third rotating drive portion 143 and the fourth rotating drive portion 144 connected to the support component 12. This is convenient to operate, and replacing the winding portion (for example, a reel containing a pole roll) is simpler and faster, and potential safety risks are eliminated. Thereafter, one end of the position control component 13 is fixedly connected to the support component 12 through the second fixing component. See Figure 1-3 The other end of the position control assembly 13 can be permanently fixed to the support assembly 12 via the first fixing assembly, but the rest of the position control assembly 13 can rotate about the first fixing assembly. Once fixed, the passive rotating portion 1302 of the position control assembly 13 is in direct contact with the winding portion 11. This allows the passive rotating portion 1302 to rotate during operation, driven by the winding portion 11, further securing the winding portion 11 and ensuring its stability during operation.

[0042] In addition to being provided on the support assembly 12 , the rotation drive assembly may also be provided on the position control assembly 131 , or the rotation drive assembly may be provided on both the support assembly 12 and the position control assembly 131 . Figure 1-6In the embodiment, the two ends of the winding portion 11 are respectively driven by two rotation driving portions to rotate the winding portion 11; in addition to this case, the two ends of the winding portion 11 can also be driven by only one rotation driving portion to rotate the winding portion 11. At this time, in addition to each having a rotation driving portion, the first support portion 121 and the second support portion 122 are each provided with a passive rotation portion. The two passive rotation portions are respectively connected to the two ends of the winding portion 11. The two passive rotation portions can rotate under the drive of the winding portion 11 and maintain the stability of the winding portion 11 during rotation.

[0043] The embodiment of the present invention further provides a battery cell manufacturing device, comprising a conveying device and a reeling and unreeling device 10 of the embodiment of the present application, the reeling and unreeling device 10 being used to release or retract a material roll conveyed by the conveying device.

[0044] In the description of the embodiments of the present application, it should be understood that the orientations or positional relationships indicated by “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 present application.

[0045] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components, or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0046] In addition, in the embodiments of the present application, the expression "and / or" includes any and all combinations of the associated listed words. For example, the expression "A and / or B" may include A, may include B, or may include both A and B.

[0047] In the embodiments of the present application, expressions including ordinal numbers such as "first" and "second" may modify various elements. However, such elements are not limited by the above expressions. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used to distinguish one element from other elements.

[0048] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0049] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more.

[0050] In the description of the embodiments of the present application, when a component is referred to as being "connected" or "accessible" to other components, it should be understood that: the component is not only directly connected to or accessed to other components, but also another component may exist between the component and the other components. On the other hand, when a component is referred to as being "directly connected" or "directly accessed" to other components, it should be understood that there is no component between them. When a component is referred to as being "movably connected" to other components, it means that the positional relationship between the component and the other components is changeable, such as the relationship between a slide rail and a slider, the slider can slide on the slide rail, and the slide rail and the track are movably connected. When a component is referred to as being "fixedly connected" to other components, it means that the positional relationship between the component and the other components after being assembled together is relatively fixed.

[0051] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features and not other features included in other embodiments, the combination of features from different embodiments is meant to be within the scope of this application and to form different embodiments.

[0052] The above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technology can easily think of changes or replacements within the technical scope disclosed in the present application, which should be included in the scope of protection of the present application. Although the present application is described based on a limited number of embodiments, with the benefit of the above description, a person skilled in the art will understand that other embodiments can be envisioned within the scope of the present application described thereby. In addition, it should be noted that the language used in the specification of the present application is mainly selected for the purpose of readability and teaching, rather than for the purpose of explaining or limiting the subject matter of the present application. Therefore, without departing from the scope and spirit of the appended claims, many modifications and changes are obvious to a person of ordinary skill in the art. With respect to the scope of the present application, the disclosure made in the present application is illustrative and not restrictive, and the scope of protection of the present application shall be based on the scope of protection of the claims.

Claims

1. A reeling and unreeling device, characterized in that: include: The winding section is used to release or retract the material roll; a supporting assembly, configured to support the winding portion; a position control assembly, movably connected to the support assembly, and configured to control the position of the winding portion during operation; A rotation drive assembly, used for driving the winding portion to rotate; Wherein, the winding portion is movably arranged on the supporting assembly.

2. The rewinding and unwinding device according to claim 1, characterized in that: The support assembly includes a first support portion and a second support portion, wherein the first support portion is used to support the first end of the winding portion, and the second support portion is used to support the second end of the winding portion.

3. The rewinding and unwinding device according to claim 2, characterized in that: The rotation drive assembly includes a first rotation drive part and a second rotation drive part, the first rotation drive part is arranged on the first support part and connected to the first end of the winding part, and the second rotation drive part is arranged on the second support part and connected to the second end of the winding part.

4. The rewinding and unwinding device according to claim 2, characterized in that: The position control assembly includes a first position control portion and a second position control portion. The first position control portion is movably connected to the first support portion, and the second position control portion is movably connected to the second support portion.

5. The rewinding and unwinding device according to claim 1, characterized in that: The first end of the position control component is movably connected to the support component via a first fixing component, and the second end of the position control component is movably connected to the support component via a second fixing component; optionally, the first fixing component is a rotating shaft fixing structure, and the second fixing component is a snap-fit fixing structure.

6. The reeling and unreeling device according to claim 3, characterized in that: The rotation drive assembly also includes a third rotation drive unit and a fourth rotation drive unit. The first support unit is also connected to the first end of the winding unit through the third rotation drive unit, and the second support unit is also connected to the second end of the winding unit through the fourth rotation drive unit. The winding unit rotates under the joint control of the first rotation drive unit, the second rotation drive unit, the third rotation drive unit and the fourth rotation drive unit.

7. The rewinding and unwinding device according to claim 4, characterized in that: Each of the first position control part and the second position control part includes a main body and a passive rotating part. When working, the main body is connected to the winding part through the passive rotating part. The passive rotating part is used to control the position of the winding part during work and rotate under the drive of the winding part.

8. The rewinding and unwinding device according to claim 2, characterized in that: Each of the first supporting portion and the second supporting portion includes an accommodation space for accommodating at least a portion of the winding portion and the rotation drive assembly.

9. The reeling and unreeling device according to claim 1, wherein: It also includes a base and a drive control component. The support component is arranged on the base. The drive control component is connected to the rotation drive component and is used to control the rotation drive component to drive the winding part to rotate.

10. A battery cell manufacturing device, characterized in that: It comprises a conveying device and a reeling and winding device as described in any one of claims 1 to 9, wherein the reeling and winding device is used to release or retract the material roll conveyed by the conveying device.

Images