Unwinding device and winding equipment
By designing an unwinding device including a bracket, a rotatable unwinding shaft, a fixedly connected material roll and a first drive member, the problems of unwinding accuracy error and tension control response lag in the prior art are solved, and higher unwinding and tension control accuracy and stability are achieved, and the yield of the battery cell is improved.
Patent Information
- Application Number
- CN202421641802.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-11
AI Technical Summary
During the unwinding process, the existing unwinding device has unstable tension control due to gear backlash or belt tension problems, and the unwinding accuracy and tension control response are lagging, which affects the yield of the battery cell.
An unwinding device is designed, including a bracket, a rotatable unwinding shaft, a fixedly connected material roll and a first drive member. The first driving member directly drives the reel and the material roll to rotate, and realizes the unwinding function, avoiding accuracy errors and tension control response lag caused by gear transmission or belt transmission.
The accuracy and stability of unwinding and tension control are improved, the yield of the battery cell is enhanced, and the problems of unwinding accuracy error and tension control response lag in the prior art are solved.
Smart Images
Figure CN222989326U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of unwinding devices, and in particular, to an unwinding device and a winding device. Background Art
[0002] In the production and manufacturing process of batteries, it is necessary to unwind the cathode and anode sheets and the separator web by an unwinding device. Among them, the unwinding accuracy of the unwinding device is particularly important. The unwinding accuracy forms a closed loop with the tension control. A high-precision unwinding device ensures high-precision tension control, thereby ensuring the tightness and uniformity of each turn of the winding of the battery cell and improving the yield of the battery cell.
[0003] The unwinding function of the existing unwinding device is usually realized by gear transmission or belt transmission. If gear transmission is used, due to the need for the unwinding device to frequently accelerate, decelerate, rotate forward and backward for tension control, and because the gear backlash cannot be eliminated, the tension control will be unstable. If belt transmission is used, there is also the problem of belt tension resulting in unstable unwinding tension control, and the transmission accuracy is worse than that of gear transmission. Utility Model Content
[0004] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and provide an unwinding device.
[0005] To solve the above technical problems, the present application provides:
[0006] An unwinding device, comprising:
[0007] A bracket;
[0008] An unwinding shaft rotatably arranged on the bracket;
[0009] A web roll fixedly connected to the unwinding shaft;
[0010] A first driving member arranged on the bracket, the output shaft of the first driving member being connected to the unwinding shaft for driving the unwinding shaft to rotate so as to drive the web roll to rotate.
[0011] In addition, according to the unwinding device of the present application, the following additional technical features may also be provided:
[0012] In some embodiments of the present application, the web roll is sleeved on the unwinding shaft and is located at an end of the unwinding shaft away from the first driving member. The unwinding shaft has a cavity, a first ventilation hole is formed in the circumferential wall of the end of the unwinding shaft close to the first driving member, a second ventilation hole is formed in the circumferential wall of the end of the unwinding shaft close to the web roll, and the cavity is respectively communicated with the first ventilation hole and the second ventilation hole.
[0013] In some embodiments of the present application, the unwinding device further includes a ventilation member, which is fixedly connected to the bracket and located on the outer circumference of the unwinding shaft. The ventilation member is provided with a third ventilation hole communicating with the first ventilation hole.
[0014] In some embodiments of the present application, a plurality of second ventilation holes are provided, and the plurality of second ventilation holes are arranged at intervals along the circumferential direction of the unwinding shaft.
[0015] In some embodiments of the present application, the unwinding device further includes a first coupling, and the first coupling is respectively connected to the output shaft of the first driving member and the unwinding shaft.
[0016] In some embodiments of the present application, two unwinding shafts, two material rolls, and two first driving members are provided. The two unwinding shafts, two material rolls, and two first driving members are arranged at intervals along a direction perpendicular to the axis of the unwinding shaft.
[0017] In some embodiments of the present application, the unwinding device further includes a mounting frame, and the bracket is arranged on the mounting frame and is slidably connected to the mounting frame.
[0018] In some embodiments of the present application, the unwinding device further includes a second driving member, a transmission mechanism, and a second coupling. The second driving member is arranged on the mounting frame. The transmission mechanism includes a lead screw shaft and a moving member. The lead screw shaft is rotatably arranged on the mounting frame. The moving member is sleeved on the lead screw shaft and is fixedly connected to the bracket. The output shaft of the second driving member is connected to the lead screw shaft through the second coupling.
[0019] In some embodiments of the present application, a first guiding member is arranged on the mounting frame, and a second guiding member is arranged on the bracket. The first guiding member is provided with a guiding hole adapted to the second guiding member, and the second guiding member is slidably connected to the hole wall of the guiding hole.
[0020] In a second aspect, the present application further provides a winding device, including the unwinding device described in any of the above embodiments.
[0021] Compared with the prior art, the beneficial effects of the present application are:
[0022] The present application provides an unwinding device, which includes a bracket, an unwinding shaft, a material roll, and a first driving member. By fixedly connecting the material roll to the unwinding shaft, the material roll can rotate stably synchronously with the unwinding shaft. At the same time, by rotatably arranging the unwinding shaft on the bracket, arranging the first driving member on the bracket, and connecting the output shaft of the first driving member to the unwinding shaft to drive the unwinding shaft to rotate automatically, thereby driving the material roll to rotate automatically and synchronously, the unwinding function of the unwinding device is realized. In this way, by directly driving the unwinding shaft and the material roll to rotate by the first driving member, the accuracy and stability of unwinding and tension control are effectively improved, thereby improving the yield rate of the battery cells. It avoids the technical problems of unwinding accuracy error and lag in unwinding tension control response caused by gear backlash or belt tension when using gear transmission or belt transmission for unwinding in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0024] Figure 1 Shows a three-dimensional schematic diagram of the unwinding device in some embodiments of the present application Figure 1 ;
[0025] Figure 2 Shows a three-dimensional schematic diagram of the unwinding device in some embodiments of the present application Figure 2 ;
[0026] Figure 3 Shows a three-dimensional schematic diagram of the unwinding shaft, the ventilation member, and the bracket in some embodiments of the present application;
[0027] Figure 4 Shows a three-dimensional schematic diagram of the unwinding shaft in some embodiments of the present application.
[0028] MAIN ELEMENT SYMBOL DESCRIPTION:
[0029] 100 - unwinding device; 110 - bracket; 111 - second guiding member; 120 - unwinding shaft; 121 - second ventilation hole; 130 - material roll; 140 - first driving member; 150 - ventilation member; 151 - third ventilation hole; 161 - first coupling; 162 - second coupling; 170 - mounting bracket; 171 - first guiding member; 1711 - guiding hole; 180 - second driving member; 190 - transmission mechanism; 191 - lead screw shaft; 192 - moving member. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.
[0031] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.
[0033] In the present application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0034] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0035] Such as Figure 1 and Figure 2As shown in the figure, an embodiment of the present application provides an unwinding device 100, which is mainly applied to winding equipment. The unwinding device 100 includes a bracket 110, an unwinding shaft 120, a material roll 130, and a first driving member 140.
[0036] Wherein, the unwinding shaft 120 is rotatably arranged on the bracket 110, and the material roll 130 is fixedly connected to the unwinding shaft 120. The first driving member 140 is arranged on the bracket 110, and the output shaft of the first driving member 140 is connected to the unwinding shaft 120 for driving the unwinding shaft 120 to rotate so as to drive the material roll 130 to rotate.
[0037] For the unwinding device 100 provided by the embodiment of the present application, by fixedly connecting the material roll 130 to the unwinding shaft 120, the material roll 130 can stably rotate synchronously with the unwinding shaft 120. At the same time, by rotatably arranging the unwinding shaft 120 on the bracket 110, arranging the first driving member 140 on the bracket 110, and connecting the output shaft of the first driving member 140 to the unwinding shaft 120 to drive the unwinding shaft 120 to rotate automatically, thereby driving the material roll 130 to rotate automatically and synchronously, the unwinding function of the unwinding device 100 is realized.
[0038] In this way, by directly driving the unwinding shaft 120 and the material roll 130 to rotate by the first driving member 140, the accuracy and stability of unwinding and tension control are effectively improved, thereby improving the yield of the battery cells. It avoids the technical problems of unwinding precision error and lag in unwinding tension control response caused by gear backlash or belt tension when using gear transmission or belt transmission for unwinding in the prior art.
[0039] Exemplarily, the first driving member 140 can be a driving motor.
[0040] As Figure 1 and Figure 3 shown, in an embodiment of the present application, optionally, the material roll 130 is sleeved on the unwinding shaft 120 and is located at an end of the unwinding shaft 120 away from the first driving member 140. The unwinding shaft 120 has a cavity. A first ventilation hole is opened on the circumferential wall of the end of the unwinding shaft 120 close to the first driving member 140, and a second ventilation hole 121 is opened on the circumferential wall of the end of the unwinding shaft 120 close to the material roll 130. The cavity is respectively communicated with the first ventilation hole and the second ventilation hole 121.
[0041] In this embodiment, by opening a first ventilation hole communicating with the cavity of the unwinding shaft 120 on the circumferential wall of the end of the unwinding shaft 120 close to the first driving member 140, and opening a second ventilation hole 121 communicating with the cavity of the unwinding shaft 120 on the circumferential wall of the end of the unwinding shaft 120 close to the material roll 130.
[0042] In this way, when unrolling is required, the compressed air in the air compressor can enter the cavity through the first vent hole and be discharged through the second vent hole 121, so that the unrolling shaft 120 is tightened to fix the material roll 130, ensuring the stability of the synchronous rotation of the material roll 130 following the unrolling shaft 120.
[0043] When the material roll 130 needs to be replaced after unrolling is completed, the connection between the air compressor and the first vent hole is disconnected, so that the operator can remove the material roll 130 from the unrolling shaft 120 and place a new material roll 130 on the unrolling shaft 120.
[0044] As Figure 1 and Figure 3 shown, in the above-mentioned embodiment of the present application, optionally, the unrolling device 100 further includes a vent member 150, the vent member 150 is fixedly connected to the bracket 110 and is located on the outer circumference of the unrolling shaft 120, and the vent member 150 is provided with a third vent hole 151 communicating with the first vent hole.
[0045] In this embodiment, by providing the third vent hole 151 communicating with the first vent hole on the vent member 150, when unrolling is required, the compressed air in the air compressor can enter the cavity successively through the third vent hole 151 and the first vent hole and be discharged through the second vent hole 121, so that the unrolling shaft 120 is tightened to fix the material roll 130, ensuring the stability of the synchronous rotation of the material roll 130 following the unrolling shaft 120. When the material roll 130 needs to be replaced after unrolling is completed, the connection between the air compressor and the third vent hole 151 and the first vent hole is disconnected, so that the operator can remove the material roll 130 from the unrolling shaft 120 and place a new material roll 130 on the unrolling shaft 120.
[0046] At the same time, by fixedly connecting the vent member 150 to the bracket 110 and being located on the outer circumference of the unrolling shaft 120, on the one hand, the third vent hole 151 of the vent member 150 can communicate with the first vent hole of the unrolling shaft 120, and on the other hand, the vent member 150 does not rotate with the unrolling shaft 120, thus avoiding the technical problem of the air pipe on the vent member 150 being wound due to the rotation of the vent member 150.
[0047] As Figure 4 shown, in the above-mentioned embodiment of the present application, optionally, a plurality of the second vent holes 121 are provided, and the plurality of the second vent holes 121 are arranged at intervals along the circumferential direction of the unrolling shaft 120.
[0048] In this embodiment, by setting the number of the second vent holes 121 to be multiple and arranging the multiple second vent holes 121 at intervals along the circumferential direction of the unwind shaft 120, when the second vent holes 121 are ventilated, the stability and reliability of the connection between the coil 130 and the unwind shaft 120 can be further improved, and the smoothness of the coil 130 following the unwind shaft 120 to rotate synchronously is further enhanced.
[0049] As Figure 1 and Figure 2 shown, in an embodiment of the present application, optionally, the unwind device 100 further includes a first coupling 161, and the first coupling 161 is respectively connected to the output shaft of the first driving member 140 and the unwind shaft 120.
[0050] In this embodiment, by setting the first coupling 161 respectively connected to the output shaft of the first driving member 140 and the unwind shaft 120, the function of the unwind shaft 120 following the output shaft of the first driving member 140 to rotate synchronously and stably is realized, so that the unwind shaft 120 and the coil 130 are directly driven by the first driving member 140 to rotate, effectively improving the accuracy and stability of unwind and tension control, and improving the yield of the battery cells.
[0051] As Figure 1 and Figure 2 shown, in an embodiment of the present application, optionally, there are two unwind shafts 120, two coils 130 and two first driving members 140, and the two unwind shafts 120, the two coils 130 and the two first driving members 140 are all arranged at intervals along the direction perpendicular to the axis of the unwind shaft 120.
[0052] In this embodiment, by setting the numbers of the unwind shaft 120, the coil 130 and the first driving member 140 to be two, and arranging the two unwind shafts 120, the two coils 130 and the two first driving members 140 at intervals along the direction perpendicular to the axis of the unwind shaft 120, the unwind device 100 can unwind two coils 130 simultaneously, effectively improving the production efficiency.
[0053] As Figure 1 and Figure 2 shown, in any one of the above embodiments of the present application, optionally, the unwind device 100 further includes a mounting frame 170, and the bracket 110 is arranged on the mounting frame 170 and is slidably connected to the mounting frame 170.
[0054] In this embodiment, by mounting the bracket 110 on the mounting frame 170 and slidably connecting it to the mounting frame 170, the bracket 110 can move relative to the mounting frame 170, thereby driving the entire unwinding reel 120, the material roll 130, and the first driving member 140 to move synchronously with the bracket 110, and further adjusting the relative position between the material roll 130 and the mounting frame 170 to achieve the deviation correction function of the unwinding device 100.
[0055] As Figure 1 and Figure 2 shown, in the above embodiment of the present application, optionally, the unwinding device 100 further includes a second driving member 180, a transmission mechanism 190, and a second coupling 162. The second driving member 180 is disposed on the mounting frame 170. The transmission mechanism 190 includes a lead screw shaft 191 and a moving member 192. The lead screw shaft 191 is rotatably disposed on the mounting frame 170. The moving member 192 is sleeved on the lead screw shaft 191 and fixedly connected to the bracket 110. The output shaft of the second driving member 180 is connected to the lead screw shaft 191 through the second coupling 162.
[0056] In this embodiment, by rotatably disposing the lead screw shaft 191 on the mounting frame 170, sleeving the moving member 192 on the lead screw shaft 191, and connecting the output shaft of the second driving member 180 to the lead screw shaft 191 through the second coupling 162 to drive the lead screw shaft 191 to rotate, thereby driving the moving member 192 to reciprocate automatically on the lead screw shaft 191. At the same time, by fixedly connecting the moving member 192 to the bracket 110, the bracket 110 is driven to reciprocate automatically along the axis direction of the lead screw shaft 191, and further realizing the function of automatically adjusting the relative position between the material roll 130 and the mounting frame 170.
[0057] In this way, when the tape of the material roll 130 is offset during unwinding, the second driving member 180 can automatically drive the bracket 110 to move along the axis direction of the lead screw shaft 191 to automatically adjust the relative position between the material roll 130 and the mounting frame 170, thereby realizing the function of correcting the offset of the tape and further ensuring the alignment of the feeding.
[0058] Exemplarily, the second driving member 180 can be a driving motor. The lead screw shaft 191 is provided with an external thread, and the inner circumferential wall of the moving member 192 is provided with an internal thread that matches the external thread.
[0059] As Figure 1 and Figure 2As shown, in the above embodiments of the present application, optionally, a first guiding member 171 is provided on the mounting bracket 170, and a second guiding member 111 is provided on the bracket 110. The first guiding member 171 is provided with a guiding hole 1711 adapted to the second guiding member 111, and the second guiding member 111 is slidably connected to the hole wall of the guiding hole 1711.
[0060] In this embodiment, by respectively providing the first guiding member 171 and the second guiding member 111 on the mounting bracket 170 and the bracket 110, a guiding hole 1711 adapted to the second guiding member 111 is provided on the first guiding member 171, and the second guiding member 111 is slidably connected to the hole wall of the guiding hole 1711, so that under the action of the first guiding member 171 and the second guiding member 111, the bracket 110 is slidably connected to the mounting bracket 170, and functions of guiding and reducing friction are achieved, effectively improving the smoothness and fluency of the sliding between the bracket 110 and the mounting bracket 170.
[0061] The embodiment of the present application further provides a winding device, including the unwinding device 100 in the above embodiments.
[0062] This winding device has the unwinding device 100 in any of the above embodiments, and thus has all the beneficial effects of the unwinding device 100, which will not be elaborated here one by one.
[0063] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0064] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.
Claims
1. A reeling device, characterized in that: include: Bracket; An unwinding shaft is rotatably disposed on the bracket; A material roll, fixedly connected to the unwinding shaft; The first driving member is arranged on the bracket, and the output shaft of the first driving member is connected with the unwinding shaft, and is used for driving the unwinding shaft to rotate, so as to drive the material roll to rotate.
2. The unwinding device according to claim 1, characterized in that: The material roll is sleeved on the unwinding shaft and is located at the end of the unwinding shaft away from the first driving member. The unwinding shaft has a cavity. The circumferential wall of the unwinding shaft at one end close to the first driving member is provided with a first vent hole. The circumferential wall of the unwinding shaft at one end close to the material roll is provided with a second vent hole. The cavity is respectively connected to the first vent hole and the second vent hole.
3. The unwinding device according to claim 2, characterized in that: The unwinding device further comprises a ventilator, which is fixedly connected to the bracket and located on the outer circumference of the unwinding shaft. The ventilator is provided with a third ventilator hole connected with the first ventilator hole.
4. The unwinding device according to claim 2, characterized in that: A plurality of the second vent holes are provided, and the plurality of the second vent holes are arranged at intervals along the circumferential direction of the unwinding shaft.
5. The unwinding device according to claim 1, characterized in that: The unwinding device further comprises a first coupling, which is respectively connected to the output shaft of the first driving member and the unwinding shaft.
6. The unwinding device according to claim 1, characterized in that: The unwinding shaft, the material roll and the first driving member are all provided in two, and the two unwinding shafts, the two material rolls and the two first driving members are all arranged at intervals along an axial direction perpendicular to the unwinding shaft.
7. The unwinding device according to any one of claims 1 to 6, characterized in that: The unwinding device also includes a mounting frame, and the bracket is arranged on the mounting frame and is slidably connected to the mounting frame.
8. The unwinding device according to claim 7, characterized in that: The unwinding device also includes a second driving member, a transmission mechanism and a second coupling. The second driving member is arranged on the mounting frame. The transmission mechanism includes a screw shaft and a moving member. The screw shaft is rotatably arranged on the mounting frame. The moving member is sleeved on the screw shaft and fixedly connected to the bracket. The output shaft of the second driving member is connected to the screw shaft through the second coupling.
9. The unwinding device according to claim 7, characterized in that: The mounting frame is provided with a first guide member, the bracket is provided with a second guide member, the first guide member is provided with a guide hole matched with the second guide member, and the second guide member is slidably connected with the hole wall of the guide hole.
10. A winding device, characterized in that: The unwinding device comprises the unwinding device according to any one of claims 1 to 9.