Winding mechanism and diaphragm slitting machine including the same

Abstract

A winding mechanism and a diaphragm slitting machine including the winding mechanism, the winding mechanism including a guide roller, a winding shaft for receiving a plurality of diaphragm strips conveyed by the guide roller, a supporting roller assembly and a driving assembly, a plurality of the diaphragm strips are wound on the winding shaft to form a plurality of groups of diaphragm rolls, each group of the supporting roller assembly corresponds to each group of the diaphragm rolls one by one, the supporting roller assembly has a supporting roller for abutting against the corresponding diaphragm roll, so that each group of diaphragm rolls has a separate pressure control, thereby preventing the diaphragm rolls from loosening, and smoothing the surface of the diaphragm rolls, thereby improving the winding quality.

Description

Technical Field

[0001] The invention relates to the technology of battery automation equipment, and in particular to a winding mechanism for winding up slit diaphragm strips and a diaphragm slitting machine comprising the winding mechanism. Background Art

[0002] When making battery cells, a diaphragm is needed to separate the positive and negative electrodes to prevent electrodes of different polarities from contacting each other and causing a short circuit. Depending on the specifications of the battery cells, the diaphragm substrate needs to be cut to the required width as needed, and then the cut diaphragm strips are rolled into coils to facilitate the later preparation of the battery cells.

[0003] In the prior art, the diaphragm strips produced after the diaphragm substrate is slit are respectively wound around the upper and lower branch rollers and introduced into the upper guide roller or the lower guide roller. In order to facilitate the winding of the diaphragm strips by the winding shaft, generally, a material barrel is sleeved on the winding shaft. At the beginning, the material barrel is attached to the guide roller, and the diaphragm strip is introduced into the material barrel by the guide roller, and finally wound up by the rotating winding shaft. As the diaphragm strip is wound longer and longer, the diaphragm material roll gradually becomes thicker, and the winding shaft gradually moves away from the guide roller, so that the outer circumference of the material roll is in contact with the roller surface of the guide roller, which is convenient for winding.

[0004] Due to the uneven thickness of the coating on the diaphragm substrate, and at the same time, multiple groups of slit diaphragm strips are being wound on a winding shaft. As the wound diaphragm roll becomes thicker, the thickness difference caused by the uneven thickness of the diaphragm substrate becomes larger and larger. When the winding shaft retreats, some of the strips may stick to the guide roller while others may not, affecting the winding quality.

[0005] Of course, in order to solve the problem of thickness difference, some manufacturers have adopted a mechanism with multiple groups of winding shafts for winding separately. Independent winding shafts are used to wind up each group of cut diaphragm strips separately. However, this mechanism has a complex structure, high cost, poor winding uniformity, and affects the final winding quality. Summary of the invention

[0006] The object of the present invention is to provide a winding mechanism with improved winding quality and a diaphragm slitting machine including the winding mechanism.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a winding mechanism, which includes a guide roller and a winding shaft for receiving and winding up the diaphragm strip conveyed by the guide roller, the diaphragm strip is wound on the winding shaft to form multiple groups of diaphragm material rolls, the winding mechanism also includes multiple groups of supporting roller assemblies and drive assemblies, each group of the supporting roller assemblies corresponds one-to-one to each group of the diaphragm material rolls, the supporting roller assembly has a supporting roller for abutting against the corresponding diaphragm material roll, and the driving assembly can drive the winding shaft to drive the diaphragm material roll to gradually move away from the guide roller during the winding process.

[0008] As a further improved technical solution of the present invention, it also includes a support roller driving device connected to and driving the support roller to rotate.

[0009] As a further improved technical solution of the present invention, the support roller assembly includes a support roller seat, a swing arm and a supporting cylinder. The support roller is rotatably arranged on the support roller seat through the swing arm. The output end of the supporting cylinder is connected to the swing arm for driving the swing arm to press the support roller toward the winding shaft.

[0010] As a further improved technical solution of the present invention, it also includes a winding drive member that drives the winding shaft to rotate, and the winding drive member is plug-fitted with the winding shaft.

[0011] As a further improved technical solution of the present invention, the driving end of the winding drive member is provided with a clamping bearing seat opening outward, and the winding shaft is provided with a bearing on the side close to the winding drive member, and the bearing is arranged in the clamping bearing seat; a notch is provided on the clamping bearing seat, and a clamping cylinder is provided above the notch, and a limiting rod is provided at the output end of the clamping cylinder, and the limiting rod passes through the notch and presses against the bearing to clamp the bearing in the clamping bearing seat.

[0012] As a further improved technical solution of the present invention, a rotating connecting component is provided on the side of the winding shaft away from the winding drive member, and the rotating connecting component includes a rotating shaft and a first bearing seat. The first bearing seat is arranged on the frame, one end of the rotating shaft is rotatably connected to the first bearing seat, and the other end is connected to the winding shaft, so that the winding shaft can swing relative to the frame.

[0013] As a further improved technical solution of the present invention, the driving component includes a driving member and a guide member, the guide member is arranged toward the guide roller, the winding shaft is arranged on a connecting plate, the connecting plate is slidingly connected to the guide member, and the driving component can drive the connecting plate to move along the guide member to realize the winding shaft approaching or moving away from the guide roller.

[0014] As a further improved technical solution of the present invention, the driving member includes a motor, a transmission shaft and a screw, one end of the transmission shaft is connected to the output end of the motor; the transmission shaft is transmission-connected to the screw, and when the motor drives the transmission shaft to rotate, the screw is driven to rotate; the connecting plate is threadedly connected to the screw, and the screw is arranged parallel to the guide member. When the screw rotates, it can drive the connecting plate and the winding shaft along the guide member to approach or move away from the guide roller.

[0015] As a further improved technical solution of the present invention, it also includes a detection device for detecting the thickness of the diaphragm material roll, and the driving member can adjust the moving speed of the winding shaft according to the detection information of the detection device.

[0016] The present invention can also adopt the following technical solutions:

[0017] A diaphragm slitting machine, comprising:

[0018] Unwinding mechanism;

[0019] The winding mechanism as claimed in any one of the claims; and

[0020] The slitting mechanism is located between the unwinding mechanism and the rewinding mechanism. The slitting mechanism is provided with a cutter for cutting the diaphragm substrate released by the unwinding mechanism into diaphragm strips. The diaphragm strips are conveyed to the rewinding mechanism and then rewound into diaphragm material rolls.

[0021] Compared with the prior art, the present invention includes multiple groups of supporting roller assemblies and driving assemblies, each group of supporting roller assemblies corresponds to each group of diaphragm rolls one by one, the supporting roller assemblies have supporting rollers for abutting against the corresponding diaphragm rolls, and when the diaphragm rolls are wound, each group of diaphragm rolls is abutted by the corresponding supporting rollers, so that each group of diaphragm rolls has independent pressure control, prevents the diaphragm rolls from loosening, and smoothes the surface of the diaphragm rolls, thereby improving the winding quality; at the same time, the driving assembly can drive the winding shaft to drive the diaphragm roll to gradually move away from the guide roller during the winding process, reserving space for the winding of the diaphragm roll, which is beneficial to the forming of the diaphragm roll; in addition, the winding mechanism has a simple structure and a clever design, and the various mechanisms are compactly coordinated, which is conducive to improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the tape transport of the diaphragm slitting machine of the present invention.

[0023] Figure 2 It is a front view of the winding mechanism of the present invention.

[0024] Figure 3 It is a top view of the winding drive assembly of the winding mechanism of the present invention. DETAILED DESCRIPTION

[0025] See also Figures 1 to 3 As shown, the present invention discloses a winding mechanism 300 and a membrane slitting machine including the winding mechanism 300, wherein the membrane slitting machine includes an unwinding mechanism 100, a slitting mechanism 200 and a winding mechanism 300. The slitting mechanism 200 is located between the unwinding mechanism 100 and the winding mechanism 300. After the membrane substrate 700 is unwound from the unwinding mechanism 100, it is cut into a plurality of membrane strips 710 of a desired width by the slitting mechanism 200. The plurality of membrane strips 710 are rolled into a plurality of membrane rolls 720 by the winding mechanism 300 for later use.

[0026] The unwinding mechanism 100 unwinds the material in a rotating manner, and the slitting mechanism 200 is provided with an upper cutter 210 and a lower cutter 220 for cutting the diaphragm substrate 700 into diaphragm strips 710 .

[0027] In order to ensure the winding stability, the winding mechanism 300 is provided with two upper and lower parts. A part of the diaphragm strip 710 after slitting enters the upper winding mechanism, and the other part of the diaphragm strip 710 enters the lower winding mechanism, so as to prevent the diaphragm material roll 720 from interfering with each other due to being close to each other during winding. The winding mechanism 300 includes a guide roller 310, a winding shaft 320, a winding driving member 321 for driving the winding shaft 320 to rotate, a plurality of roller assemblies 330, a driving assembly 340 and a detection device 350. The slitting diaphragm strip 710 is transported to the winding shaft 320 by the guide roller 310. The guide roller 310 is provided as an active roller. A motor (not shown) for driving the guide roller 310 to rotate is provided at one end of the guide roller 310. When the slitting diaphragm strip 710 passes through the guide roller 310, the rotating guide roller 310 has a traction effect on the diaphragm strip 310, which is conducive to guiding the diaphragm strip 710 to move toward the winding shaft 320. The roller of the guide roller 310 is coated with soft material, which can increase the friction with the diaphragm strip 710 and better pull the diaphragm strip 710.

[0028] The diaphragm strip 710 is pulled by the guide roller 310 and enters the reel 320. The reel 320 is covered with multiple groups of barrels 800 to receive and reel the diaphragm strip 710. After the diaphragm strip 710 is reeled on the reel 320, a diaphragm roll 720 is formed. The roller 331 of the roller assembly 330 always abuts against the diaphragm roll 720. In order to facilitate the forming and unloading of the diaphragm roll 720, preferably, the reel 320 adopts a slip shaft, which can provide the reeling tension and fix the barrel 800 during reeling. When the reeling is completed and the material needs to be unloaded, each barrel 800 is released. It should be noted that the slip shaft can adopt the existing technology, which will not be elaborated in detail here.

[0029] Generally, multiple groups of diaphragm strips 710 will be rolled up on a winding shaft 320 at the same time to form multiple groups of diaphragm material rolls 720. In order to ensure the winding quality of each group of diaphragm material rolls 720, multiple groups of roller assemblies 330 are provided accordingly. Each group of roller assemblies 330 corresponds to each group of diaphragm material rolls 720 one by one. One group of rolled-up diaphragm material rolls 720 corresponds to one group of roller assemblies 330, so that each group of diaphragm material rolls 720 is supported by the roller 331 of the corresponding roller assembly 330, thereby improving the uniformity and stability of winding.

[0030] Specifically, the roller assembly 330 includes a roller 331, a roller seat 332, a swing arm 333 and a holding cylinder 334. The roller 331 is rotatably arranged on the roller seat 332 through the swing arm 333. Specifically, one end of the swing arm 333 is rotatably connected to the roller seat 332, and the other end is connected to the roller 331, so that the roller 331 can "press" the diaphragm roll 720 when it abuts against the diaphragm roll 720. Therefore, no matter how thick the diaphragm roll 720 wound on the winding shaft 320 is, the roller 331 can "press" the corresponding diaphragm roll 720. The holding cylinder 334 is arranged on the side of the roller seat 332 away from the winding shaft 320, and the output end of the holding cylinder 334 is connected to the swing arm 333, which is used to drive the swing arm 333 to press the roller 331 against the winding shaft 320 and press the corresponding diaphragm roll 720. In order to facilitate the winding shaft 320 to be away from the guide roller 310 , the support roller 331 is interposed between the winding shaft 320 and the guide roller 310 , and the diaphragm strip 710 is wound around the support roller 331 and then wound by the winding shaft 320 .

[0031] Specifically, the number of the supporting roller assemblies 330 corresponds to the number of the membrane rolls 720 wound on the winding shaft 320, so as to ensure that each membrane roll 720 can be accurately pressed against when winding. When the winding drive 321 drives the winding shaft 320 to rotate and wind, the supporting cylinder 334 drives the supporting roller 331 to always press against the corresponding membrane roll 720, so that the supporting roller 331 can not only press the membrane roll 720, but also smooth the surface of the membrane roll 720, thereby further improving the molding quality of the membrane roll 720. At this time, if the supporting roller 331 is a driven roller, the roller surface is close to the membrane roll 720 and rotates along with the rotation of the membrane roll 720. Due to the speed difference, resistance will be generated on the membrane strip 710, so that the winding speed of the membrane roll 720 on the winding shaft 320 does not correspond to the guiding speed of the guide roller 310, and finally the membrane strip 710 is broken or cannot be wound up in time, affecting the winding effect. In summary, the supporting roller 331 is set as the active roller. When the winding shaft 320 rotates and the membrane strip 710 is wound up to form the membrane roll 720, the supporting roller 331 rotates close to the outer circumference of the membrane roll 720 to assist in guiding the winding of the membrane strip 710.

[0032] In order to drive the roller 331 to rotate, the winding mechanism 300 further includes a roller driving device 335, which is connected to and drives the roller 331 to rotate. In one embodiment, each roller assembly 330 can be provided with a group of independent roller driving devices 335 to be driven separately. Specifically, the roller driving device 335 includes a motor, and the output end of the motor is connected to the roller 331 to drive the roller 331 to rotate. Since multiple groups of diaphragm rolls 720 are wound on a winding shaft 320, the winding speed of each group of diaphragm rolls 720 is consistent. In order to reduce costs and improve the uniformity of winding, in another embodiment, a group of roller driving devices 335 can be used to synchronously drive multiple groups of roller assemblies 330 to rotate. Specifically, the roller driving device 335 includes a roller driving member 3351 and a spline shaft 3352. The roller driving member 3351 is set as a motor, and the spline shaft 3352 has a transmission and guiding function. Each group of supporting rollers 331 is connected in series to the spline shaft 3352 through a synchronous belt assembly. The synchronous belt assembly includes a driving wheel arranged on the spline shaft 3352, a driven wheel arranged on the supporting roller 331, and a synchronous belt connecting the driving wheel and the driven wheel. The supporting roller driving member 3351 drives the spline shaft 3352 to drive the driving wheel to rotate, and the synchronous belt drives the driven wheel to follow the rotation, and finally drives the supporting roller 331 to rotate. Of course, in addition to the synchronous belt assembly, gear transmission and other methods can also be used.

[0033] In order to facilitate the unloading of the winding shaft 320, one end of the winding shaft 320 connected to the winding drive member 321 is detachable. The winding drive member 321 is plugged into and matched with the winding shaft 320. After the winding is completed, the winding shaft 320 can be removed from the winding drive member 321. Specifically, an active clutch 322 is provided at the output end of the winding drive member 321, and the active clutch 322 is driven to drive the winding shaft 320 to rotate and rewind the material. A driven clutch 323 is provided on the side of the winding shaft 320 close to the winding drive member 321, which is plugged into and matched with the active clutch 322. Of course, in addition to using a matching clutch to achieve a detachable connection between the winding drive member 321 and the winding shaft 320, a coupling or other connecting member can also be used.

[0034] The winding drive member 321 adopts a motor. In order to facilitate maintenance and installation, the motor is usually arranged outside the frame 1. For this reason, the output end of the motor needs to pass through the frame 1 and connect to the winding shaft 320. Specifically, a clamping bearing seat 324 opening outward is provided at the output end of the winding drive member 321, and the winding drive member 321 is connected to the frame 1 through the clamping bearing seat 324. Correspondingly, a bearing 3204 is provided on the winding shaft 320, and the bearing 3204 is movably arranged in the clamping bearing seat 324. In order to lock the bearing 3204 to fix the connection between the winding shaft 320 and the winding drive member 321, a notch is opened on the clamping bearing seat 324, and a clamping cylinder 325 is provided above the notch. A limit rod is provided at the output end of the clamping cylinder 325, and the limit rod passes through the notch to resist the bearing 3204, so that the bearing 3204 is pressed in the clamping bearing seat 324. The connection between the winding drive member 321 and the winding shaft 320 is achieved through the matching connection between the bearing 3204 and the clamping bearing seat 324, and the linkage connection between the active clutch 322 and the driven clutch 323, so that the winding shaft 320 can rotate stably relative to the frame 1 under the drive of the winding drive member 321.

[0035] Furthermore, in order to facilitate the unloading of the winding shaft 320, a rotating connection member is provided at the other end of the winding shaft 320 away from the winding drive member 321, and the rotating connection member includes a rotating shaft and a first bearing seat; the first bearing seat is arranged on the frame 1, and one end of the rotating shaft is rotatably connected to the first bearing seat, and the other end is connected to the winding shaft, so that the winding shaft 321 can swing relative to the frame 1. In order to facilitate the installation of the winding shaft 320, the other end of the winding shaft 320 away from the winding drive member 321 is connected to the frame 1 through the second bearing seat. The winding shaft 320 is rotatably arranged in the second bearing seat, and the other end of the rotating shaft is fixed on the second bearing seat. Since the second bearing seat passes through the frame 1, when the winding shaft 320 swings, the second bearing seat may interfere with the frame 1. For this reason, a avoidance notch 12 is opened on the frame 1 for the second bearing seat to move.

[0036] When unloading or changing the roll, the pressing cylinder 325 releases the limit rod so that it does not press against the bearing 3204. The bearing 3204 is movable in the clamping bearing seat 324. By pulling the reel 320 outward, the driven clutch 323 is disengaged from the active clutch 322, and the reel 320, the bearing 3204, and the driven clutch 323 can be pulled out of the clamping bearing seat 324. When one end of the reel 320 is separated from the reel drive member 321 and swings outward, the other end swings in the opposite direction. Since the other end is connected to the frame 1 through a rotating connecting member, when the reel 320 swings, the second bearing seat swings accordingly, driving the rotating shaft to rotate in the first bearing seat, so that the reel 320 is separated from the reel drive member 321.

[0037] When the membrane strip 710 is rolled up on the winding shaft 320, as the membrane roll 720 becomes thicker, the driving assembly 340 will drive the winding shaft 320 to gradually move away from the guide roller 310 according to the winding speed and the theoretically ideal thickness of the membrane roll 720 at the speed, so as to leave space for winding the membrane strip 710, and to stably wind the membrane strip 710 in cooperation with the roller assembly 330. Since the winding shaft 320 is a long axis, in order to stably drive the winding shaft 320 away from the guide roller 310, traction is provided at both ends of the winding shaft 320. Specifically, the driving assembly 340 includes a driving member 341 and a guide member 342. The guide member 342 is a guide rail arranged on the frame 1 facing the guide roller 310. The guide member 342 has two sets. The two ends of the winding shaft 320 are slidably connected with the guide member 342 through a connecting plate 343 respectively. The winding shaft 320 is arranged on the connecting plate 343, and the connecting plate 343 is slidably connected with the guide member 342; the driving member 341 includes a motor 3411, a transmission shaft 3412, a gear assembly 3413 (a driving wheel and a driven wheel of meshing transmission) and a screw rod 3414. One end of the transmission shaft 3412 is connected to the motor 3411, and the motor 3411 drives the transmission shaft 3412 to rotate; a driving wheel is provided on the transmission shaft 3412, and a driven wheel is provided at one end of the screw rod 3414. The driving wheel meshes with the driven wheel, and the motor 34 When the transmission shaft 3412 is driven to rotate, the driving wheel, the driven wheel and the screw rod 3414 are driven to rotate; the connecting plate 343 is connected to the screw rod 3414 through a nut thread; the two ends of the winding shaft 320 are respectively connected to the screw rod 3414 through the connecting plate 343, for this purpose, two sets of screw rod 3414 and gear assembly 3413 are correspondingly arranged, and the motor 3411 synchronously drives the two sets of gear assemblies 3413 through the transmission shaft 3412 to drive the screw rod 3414 to rotate; the screw rod 3414 is arranged parallel to the guide member 342; when the screw rod 3414 rotates, it drives the connecting plate 343 and the winding shaft 320 to move closer to or away from the guide roller 310 along the guide member 342. Since a group of motors 3411 are used to synchronously drive the two ends of the winding shaft 320 to move, the movement uniformity of the winding shaft 320 is better, thereby ensuring the winding quality.

[0038] More specifically, the clamping bearing seat 324 is fixedly provided on the connecting plate 343, and the winding drive member 321 is connected to the winding shaft 320 via the clamping bearing seat 324. When the winding shaft 320 moves, the winding drive member 321 follows the movement of the winding shaft 320 while stably driving the winding shaft 320 to rotate. At the other end, the first bearing seat is also fixedly provided on the corresponding connecting plate 343, and the second bearing seat is rotatably connected to the first bearing seat via a rotating shaft, thereby ensuring the stable movement of the winding shaft 320 and facilitating unloading after winding is completed. When the diaphragm strip 710 is wound on the winding shaft 320, the motor 3411 controls the transmission shaft 3412, which is transmitted through the gear assembly 3413 to drive the screw rod 3414 to rotate, so that the connecting plate 343 threadedly connected to the screw rod 3414 is stably moved away from the guide roller 310 along the guide member 342. Under ideal conditions, the thickness of the diaphragm roll 720 when wound is consistent with the distance between the winding shaft 320 and the guide roller 310. At this time, the supporting roller 331 always stays in place and presses against the outer periphery of the diaphragm roll 720, and the swing arm 333 does not swing. The force output by the supporting cylinder 334 is continuous, stable and accurate, thereby improving the winding quality of the diaphragm roll 720.

[0039] Of course, in actual use, it cannot be ensured that the winding thickness of the membrane roll 720 is always consistent with the preset thickness. If the winding shaft 320 is always gradually away from the guide roller 310 at a preset speed, the reserved distance may not match the actual required winding space. In order to improve the winding accuracy, a detection device 350 is provided above or below the winding shaft 320. The detection device 350 uses a laser thickness sensor to detect the thickness of the membrane roll 720 and transmit the detected information to the control system, and finally the system feeds back the information to the driving member 341, and the system regulates the speed of the winding shaft 320 away from the guide roller 310.

[0040] Since the winding mechanism 300 of the present invention is provided with multiple groups of supporting roller assemblies 330 corresponding to the multiple groups of diaphragm rolls 720 one by one, when the winding shaft 320 drives the diaphragm roll 720 away from the guide roller 310, the supporting roller 331 of the supporting roller assembly 330 abuts against the corresponding diaphragm roll 720, so that each group of diaphragm rolls 720 has pressure control separately, thereby preventing the diaphragm rolls 720 from loosening, smoothing the diaphragm rolls 720, and improving the winding quality. In addition, the winding mechanism 300 has a simple structure and a clever design, and the various mechanisms are compactly coordinated, which is conducive to improving production efficiency and reducing production costs.

[0041] The above embodiments are only used to illustrate the present invention but not to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technicians in the relevant technical field. For example, the directional descriptions such as "front", "back", "left", "right", "up", and "down" are described in detail in this specification with reference to the above embodiments. However, ordinary technicians in this field should understand that technicians in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A winding mechanism, comprising a guide roller and a winding shaft for receiving and winding up the membrane strip conveyed by the guide roller, wherein the membrane strip is wound on the winding shaft to form a plurality of membrane rolls, characterized in that: It also includes a plurality of groups of supporting roller assemblies and a driving assembly, each group of the supporting roller assemblies corresponds to each group of the diaphragm rolls, the supporting roller assemblies have supporting rollers for abutting against the corresponding diaphragm rolls, and the driving assembly can drive the winding shaft to drive the diaphragm rolls to gradually move away from the guide rollers during the winding process; Each of the plurality of groups of roller assemblies is provided with a supporting cylinder; Each group of supporting roller assemblies is provided with a group of independent supporting roller driving devices to independently drive the supporting rollers to rotate.

2. The winding mechanism according to claim 1, characterized in that: It also includes a supporting roller driving device which is connected to and drives the supporting roller to rotate.

3. The winding mechanism according to claim 1, characterized in that: The supporting roller assembly includes a supporting roller seat, a swing arm and a supporting cylinder. The supporting roller is rotatably arranged on the supporting roller seat through the swing arm. The output end of the supporting cylinder is connected to the swing arm for driving the swing arm to press the supporting roller toward the winding shaft.

4. The winding mechanism according to claim 1, characterized in that: It also includes a winding drive component for driving the winding shaft to rotate, and the winding drive component is plug-fitted with the winding shaft.

5. The winding mechanism according to claim 4, characterized in that: The driving end of the winding drive member is provided with a clamping bearing seat which is open outward, and a bearing is provided on the side of the winding shaft close to the winding drive member, and the bearing is arranged in the clamping bearing seat; a notch is provided on the clamping bearing seat, and a clamping cylinder is provided above the notch, and a limiting rod is provided at the output end of the clamping cylinder, and the limiting rod passes through the notch and presses against the bearing to clamp the bearing in the clamping bearing seat.

6. The winding mechanism according to claim 5, characterized in that: A rotating connection component is provided on the side of the winding shaft away from the winding drive component, and the rotating connection component includes a rotating shaft and a first bearing seat. The first bearing seat is arranged on the frame, one end of the rotating shaft is rotatably connected to the first bearing seat, and the other end is connected to the winding shaft, so that the winding shaft can swing relative to the frame.

7. The winding mechanism according to claim 1, characterized in that: The driving assembly includes a driving member and a guide member, the guide member is arranged toward the guide roller, the winding shaft is arranged on a connecting plate, the connecting plate is slidingly connected to the guide member, and the driving assembly can drive the connecting plate to move along the guide member to realize the winding shaft approaching or moving away from the guide roller.

8. The winding mechanism according to claim 7, characterized in that: The driving member includes a motor, a transmission shaft and a screw, one end of the transmission shaft is connected to the output end of the motor; the transmission shaft is connected to the screw, and when the motor drives the transmission shaft to rotate, the screw is driven to rotate; the connecting plate is threadedly connected to the screw, and the screw is arranged parallel to the guide member. When the screw rotates, it can drive the connecting plate and the winding shaft along the guide member to approach or move away from the guide roller.

9. The winding mechanism according to claim 7, characterized in that: It also includes a detection device for detecting the thickness of the diaphragm material roll, and the driving member can adjust the moving speed of the winding shaft according to the detection information of the detection device.

10. A diaphragm slitting machine, characterized in that: It includes: Unwinding mechanism; The winding mechanism according to any one of claims 1 to 9; as well as The slitting mechanism is located between the unwinding mechanism and the rewinding mechanism. The slitting mechanism is provided with a cutter for cutting the diaphragm substrate released by the unwinding mechanism into diaphragm strips. The diaphragm strips are conveyed to the rewinding mechanism and then rewound into diaphragm material rolls.

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