Coil unwinding mechanism and laser die-cutting and slitting machine

Abstract

The embodiment of the present invention provides a coil unwinding mechanism and a laser die-cutting and slitting integrated machine, which relates to the field of lithium battery manufacturing technology. The coil unwinding mechanism includes an unwinding shaft, a mounting frame, a magnetic powder clutch and a driving member. The driving member is connected to the input shaft of the magnetic powder clutch by transmission. The output shaft of the magnetic powder clutch is rotatably assembled on the mounting frame. The unwinding shaft is connected to the output shaft of the magnetic powder clutch by transmission and is used to carry the pole piece material strip. The rotation direction of the input shaft of the magnetic powder clutch is opposite to the rotation direction of the unwinding shaft. The magnetic powder clutch is used to adjust the tension of the unwinding shaft. Compared with the prior art, the coil unwinding mechanism provided by the present invention can avoid the motor directly driving the unwinding shaft to rotate, so that the tension control of the unwinding shaft is more stable, the control process is simplified, and the problem of excessive tension fluctuations during start-stopping, which easily leads to the breakage of the pole piece material strip, is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery manufacturing, and in particular to a coil unwinding mechanism and a laser die-cutting and slitting integrated machine. Background Art

[0002] In the field of lithium battery manufacturing, the unwinding mechanism is one of the indispensable equipment for pole piece processing. Conventional unwinding mechanisms usually use motors to drive the unwinding shaft. When the unwinding shaft is working, the rotation direction of the motor output to the magnetic powder clutch and the unwinding direction rotate in the same direction, that is, the motor directly drives the unwinding shaft to rotate. The power transmitted by the motor to the magnetic powder clutch will continuously modify the motor output parameters according to the different tensions and the diameters of the coils. The program control is also complicated and difficult to control, which makes the tension control of the pole piece strip unstable and affects the pole piece processing. In addition, since the motor directly drives the unwinding shaft to rotate, during the unwinding process, due to the fluctuations in the winding and intermediate traction forces, the motor output parameters need to be continuously optimized, and the tension fluctuations are too large when the equipment starts and stops, which can easily cause the pole piece strip to break. After the strip breaks, it needs to be manually reconnected, which results in a waste of labor costs and pole piece strips. Summary of the invention

[0003] The objects of the present invention include, for example, providing a coil unwinding mechanism and a laser die-cutting and slitting machine, which can avoid the motor directly driving the unwinding shaft to rotate, so that the tension control of the unwinding shaft is more stable, simplifying the control process, and avoiding the problem of excessive tension fluctuations during starting and stopping, which may easily lead to the breakage of the pole piece material.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a coil unwinding mechanism, comprising an unwinding shaft, a mounting bracket, a magnetic powder clutch and a driving member, wherein the driving member is drivingly connected to the input shaft of the magnetic powder clutch, the output shaft of the magnetic powder clutch is rotatably mounted on the mounting bracket, the unwinding shaft is drivingly connected to the output shaft of the magnetic powder clutch, and is used to carry a pole piece strip, the rotation direction of the input shaft of the magnetic powder clutch is opposite to the rotation direction of the unwinding shaft, and the magnetic powder clutch is used to adjust the tension of the unwinding shaft.

[0006] In an optional embodiment, a first transmission gear is provided on the output shaft of the driving member, and a second transmission gear is provided on the input shaft of the magnetic powder clutch. The first transmission gear and the second transmission gear are meshed with each other, and the driving member is used to drive the input shaft of the magnetic powder clutch to rotate.

[0007] In an optional embodiment, the first transmission gear and the second transmission gear are both spur gears, and the output shaft of the driving member rotates in the opposite direction to the input shaft of the magnetic powder clutch.

[0008] In an alternative embodiment, the driving member includes a servo motor and a speed reducer. The servo motor is drivingly connected to the input shaft of the speed reducer, and the first transmission gear is disposed on the output shaft of the speed reducer.

[0009] In an alternative embodiment, the diameter of the first transmission gear is smaller than that of the second transmission gear.

[0010] In an alternative embodiment, a coupling is disposed at the end of the output shaft of the magnetic powder clutch. The coupling is connected to the unwinding shaft, and the axis directions of the unwinding shaft and the output shaft of the magnetic powder clutch are the same.

[0011] In an alternative embodiment, the mounting bracket includes a first mounting plate, a second mounting plate, and a plurality of connecting rods. The first mounting plate and the second mounting plate are disposed opposite to each other. The output shaft of the magnetic powder clutch is rotatably assembled on the second mounting plate and the first mounting plate in sequence. The plurality of connecting rods are disposed between the first mounting plate and the second mounting plate, and two ends of each connecting rod are respectively connected to the first mounting plate and the second mounting plate.

[0012] In an alternative embodiment, the input shaft of the magnetic powder clutch is a hollow shaft and is sleeved on the output shaft of the magnetic powder clutch through a bearing.

[0013] In an alternative embodiment, the coil unwinding mechanism further includes a tension sensor. The tension sensor is connected to the magnetic powder clutch and is used for detecting the tension value of the pole piece strip. The magnetic powder clutch is used for adjusting the output force of the unwinding shaft according to the tension value.

[0014] In a second aspect, the present invention provides a laser die-cutting and slitting integrated machine, including a mounting frame, a coil winding mechanism, a slitting mechanism, and the coil unwinding mechanism according to any one of the foregoing embodiments. The coil unwinding mechanism, the slitting mechanism, and the coil winding mechanism are sequentially disposed on the mounting frame.

[0015] The beneficial effects of the embodiments of the present invention include, for example:

[0016] The coil unwinding mechanism provided by the present invention has a driving member connected to the input shaft of the magnetic powder clutch, the output shaft of the magnetic powder clutch is assembled on the mounting frame, the unwinding shaft is connected to the output shaft of the magnetic powder clutch, and is used to carry the pole piece strip, wherein the magnetic powder clutch is used to adjust the tension of the unwinding shaft, the output direction of the motor, that is, the rotation direction of the input shaft of the magnetic powder clutch is opposite to the rotation direction of the unwinding shaft, the motor does not play the role of driving the unwinding shaft to rotate, but provides tension to the unwinding shaft through the magnetic powder clutch, so that the tension on the pole piece strip remains stable, and the output of the driving member is more stable, the control is simpler, and there is no need to adjust according to the pole piece strip. Compared with the prior art, the coil unwinding mechanism provided by the present invention can avoid the motor directly driving the unwinding shaft to rotate, so that the tension control of the unwinding shaft is more stable, the control process is simplified, and the problem of excessive tension fluctuations during start and stop that easily leads to the breakage of the pole piece strip is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic structural diagram of a coil unwinding mechanism provided in a first embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the assembly structure of the coil unwinding mechanism provided by the first embodiment of the present invention at a first viewing angle;

[0020] Figure 3 A schematic diagram of the assembly structure of the coil unwinding mechanism provided by the first embodiment of the present invention at a second viewing angle;

[0021] Figure 4 A schematic diagram of the partial structure of a coil unwinding mechanism provided in the first embodiment of the present invention.

[0022] Icons: 100-roll unwinding mechanism; 110-unwinding shaft; 111-coupling; 130-mounting bracket; 131-first mounting plate; 133-second mounting plate; 135-connecting rod; 150-magnetic powder clutch; 151-second transmission gear; 170-driving member; 171-first transmission gear; 173-servo motor; 175-reducer; 190-tension sensor; 200-pole sheet strip. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0024] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it will not be necessary to further define and explain it in subsequent figures.

[0026] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the inventive product is customarily placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0027] In addition, terms such as "first", "second", etc. are used only for descriptive distinction and should not be construed as indicating or implying relative importance.

[0028] As disclosed in the background art, in the prior art, a motor is usually used to drive the unwinding shaft to rotate. The motor mainly provides driving force and also adjusts the output force according to the tension on the pole piece strip. Specifically, when the existing unwinding shaft is working, the rotation direction of the motor output to the magnetic powder clutch and the unwinding direction rotate in the same direction. The power transmitted to the magnetic powder clutch by the motor will continuously modify the motor output parameters according to the different tensions and the diameters of the coils, and a large torque will be generated when the machine is stopped and started, which may cause excessive fluctuations in the tension on the pole piece material belt, resulting in the problem of the pole piece material belt breaking. The motor and the magnetic powder clutch must use high-precision helical gears with small backlash, requiring high precision of parts heightening; at the same time, the existing unwinding mechanism uses a set of helical gears installed on the magnetic powder clutch, and the helical gears are installed on the magnetic powder clutch. Since axial and radial forces are generated during the helical gear transmission, a set of angular contact ball bearings needs to be added separately to prevent damage to the magnetic powder clutch, and the structure is complicated; and the servo motors selected for the existing unwinding mechanism all need to calculate the weight, speed, acceleration torque, and rotational inertia of the pole piece material belt, and the speed of the motor must be greater than the maximum operating speed of the pole piece material belt. According to the diameter of 700mm and the weight of 600KG, a 5KW motor needs to be selected, and the motor power is large and the energy consumption is high.

[0029] In order to solve the above problems, the present invention provides a novel coil unwinding mechanism. It should be noted that the features in the embodiments of the present invention can be combined with each other without conflict.

[0030] First embodiment

[0031] Please refer to Figures 1 to 4 The present embodiment provides a coil unwinding mechanism 100, which can prevent the motor from directly driving the unwinding shaft 110 to rotate, so that the tension control of the unwinding shaft 110 is more stable, simplifying the control process, and avoiding the problem of excessive tension fluctuations during starting and stopping, which may easily lead to the breakage of the pole piece strip 200.

[0032] The coil unwinding mechanism 100 provided in this embodiment includes an unwinding shaft 110, a mounting bracket 130, a magnetic powder clutch 150 and a driving member 170. The driving member 170 is transmission-connected to the input shaft of the magnetic powder clutch 150. The output shaft of the magnetic powder clutch 150 is rotatably assembled on the mounting bracket. The unwinding shaft 110 is transmission-connected to the output shaft of the magnetic powder clutch 150 and is used to carry the pole piece strip 200. The rotation direction of the input shaft of the magnetic powder clutch 150 is opposite to that of the unwinding shaft 110. The magnetic powder clutch 150 is used to adjust the tension of the unwinding shaft 110.

[0033] In this embodiment, the coil uncoiling mechanism 100 is used to be arranged on a laser cutting and uncoiling integrated machine. An electrode strip 200 is wound around an uncoiling shaft 110. The electrode strip 200 maintains tension under the pulling force at the winding end and in the middle. The uncoiling shaft 110 rotates driven by the electrode strip 200. A driving member 170 provides a reverse rated torque and speed to a magnetic powder clutch 150, and the magnetic powder clutch 150 is used to adjust the tension of the uncoiling shaft 110. When the pulling force at the winding end and in the middle is large, resulting in the acceleration of the transportation of the electrode strip 200, the magnetic powder clutch 150 appropriately increases the tension of the uncoiling shaft 110 so that the tension on the electrode strip 200 remains stable. When the electrode strip 200 works at a constant speed, the driving member 170 will not be affected by the size and weight of the coil diameter. Its output speed and torque remain rated. At the same time, the magnetic powder clutch 150 will not continuously correct the output force due to the fluctuations of the output speed and torque of the driving member 170, maintaining the tension of the electrode strip 200. The magnetic powder clutch 150 only needs to output a stable force to maintain the tension. When the electrode strip 200 starts or stops, the magnetic powder clutch 150 also outputs a stable force to maintain the tension. This embodiment solves the problem that the conventional uncoiling clutch needs to receive the control force, speed of the motor and the tension feedback from the electrode strip 200 to control the output force, and the clutch control fluctuates greatly. This embodiment only needs to receive the tension of the electrode strip 200 to modify the output force of the magnetic powder clutch. The tension control is stable and there will be no large fluctuations in tension. It is also easy to maintain the current tension when the uncoiling shaft 110 starts or stops.

[0034] It should be noted that in this embodiment, the input shaft direction of the magnetic powder clutch 150 refers to the input direction of the driving member 170, which ensures that the driving member 170 provides a reverse resistance, so that the output shaft of the magnetic powder clutch 150 receives a certain damping effect, and further adjusts the tension of the uncoiling shaft 110.

[0035] Furthermore, the coil uncoiling mechanism 100 further includes a tension sensor 190. The tension sensor 190 is connected to the magnetic powder clutch 150 and is used to detect the tension value of the electrode strip 200. The magnetic powder clutch 150 is used to adjust the output force of the uncoiling shaft 110 according to the tension value. Specifically, the tension sensor 190 is arranged on an external frame and can measure the tension value on the electrode strip 200 and feedback the tension value to the magnetic powder clutch 150. The magnetic powder clutch 150 can adjust the torque and resistance of the output shaft, so as to realize the adjustment of the tension of the uncoiling shaft 110.

[0036] In this embodiment, a first transmission gear 171 is provided on the output shaft of the driving member 170, and a second transmission gear 151 is provided on the input shaft of the magnetic powder clutch 150. The first transmission gear 171 and the second transmission gear 151 are meshed with each other, and the driving member 170 is used to drive the input shaft of the magnetic powder clutch 150 to rotate. Specifically, the transmission is carried out through gears, which is stable and efficient, and the power transmission efficiency is high. Of course, other types of transmission structures can also be used between the driving member 170 and the magnetic powder clutch 150, such as belts or chains for transmission, which are not specifically limited here.

[0037] Specifically, the first transmission gear 171 and the second transmission gear 151 are both spur gears, and the output shaft of the driving member 170 rotates in the opposite direction to the input shaft of the magnetic powder clutch 150. Since the connection between the driving member 170 and the magnetic powder clutch 150 is stable in the present application, and the output speed and torque of the driving member 170 are kept rated, the precision requirement between the first transmission gear 171 and the second transmission gear 151 is not high, so spur gears can be directly used for transmission, and high-precision helical gears are not required. In addition, a set of angular contact ball bearings is removed, and the spur gears can be directly installed on the magnetic powder clutch 150, which simplifies the structure and reduces the cost. Of course, in other preferred embodiments, the first transmission gear 171 and the second transmission gear 151 can also be driven by other types of gears such as bevel gears or worm gears.

[0038] In this embodiment, the input shaft of the magnetic powder clutch 150 is a hollow shaft, and is mounted on the output shaft of the magnetic powder clutch 150 through a bearing sleeve. Specifically, the first transmission gear 171 is fixedly mounted on the hollow shaft, and the input shaft and the output shaft of the magnetic powder clutch 150 can maintain a relative rotation state through the bearing. The resistance between the input shaft and the output shaft is adjusted by the magnetic powder clutch 150, and the specific reference can be made to the existing magnetic powder clutch 150.

[0039] In this embodiment, the driving member 170 includes a servo motor 173 and a reducer 175, the servo motor 173 is in driving connection with the input shaft of the reducer 175, and the first transmission gear 171 is disposed on the output shaft of the reducer 175. In this embodiment, the rotation direction of the second transmission gear 151 is opposite to the rotation direction of the unwinding shaft 110, and the rotation direction of the first transmission gear 171 is the same as the rotation direction of the unwinding shaft 110.

[0040] In this embodiment, the diameter of the first transmission gear 171 is smaller than that of the second transmission gear 151. Specifically, the diameter of the first transmission gear 171 is half of the diameter of the second transmission gear 151, so that the transmission ratio is larger, and thus a servo motor 173 with a smaller rated power can be selected compared with the prior art. Preferably, in this embodiment, calculated according to the diameter of the pole piece strip 200 being 700 mm, the weight being 600 KG, the running speed being 80 r / min, and the tension being 150 N, the servo motor selection in the prior art requires a 5KW + speed reducer, the tension is within ±5 N during uniform motion, and within ±15 N during equipment start-up acceleration and stop deceleration, and the parameters of the servo motor 173 also need to be continuously optimized according to different coil diameters. In the embodiment of the present invention, only a 0.75KW servo motor 173 + a speed reducer with the same ratio are required, directly saving 85% of energy and reducing consumption, the tension is maintained within ±0.2 N during uniform motion, and within ±2 N during equipment start-up acceleration and stop deceleration.

[0041] In this embodiment, a coupling 111 is provided at the end of the output shaft of the magnetic powder clutch 150. The coupling 111 is connected to the unwinding shaft 110, and the axis directions of the unwinding shaft 110 and the output shaft of the magnetic powder clutch 150 are the same. Specifically, in other preferred embodiments, the output shaft of the magnetic powder clutch 150 can also be directly integrally provided with the unwinding shaft 110, and only a good synchronous rotation effect needs to be ensured between the two.

[0042] In this embodiment, the mounting bracket 130 includes a first mounting plate 131, a second mounting plate 133, and a plurality of connecting rods 135. The first mounting plate 131 and the second mounting plate 133 are arranged opposite to each other. The output shaft of the magnetic powder clutch 150 is sequentially rotationally assembled on the second mounting plate 133 and the first mounting plate 131. The plurality of connecting rods 135 are arranged between the first mounting plate 131 and the second mounting plate 133, and both ends of each connecting rod 135 are respectively connected to the first mounting plate 131 and the second mounting plate 133.

[0043] A roll material unwinding mechanism 100 provided in this embodiment operates as follows: In the initial state, the servo motor 173 rotates uniformly in the reverse direction, and drives the rotation of the input shaft of the electromagnetic powder clutch 150 through the transmission structure between the first transmission gear 171 and the second transmission gear 151. At this time, the pole piece strip 200 starts to rotate, and the winding end and the intermediate traction force pull the pole piece strip 200 to start rotating. The electromagnetic powder clutch 150 adjusts the excitation current according to the tension value feedback by the tension sensor 190, and further adjusts the output torque of the output shaft of the electromagnetic powder clutch 150. Moreover, the tension of the pole piece strip 200 can approach the set tension value both when the diameter of the material roll changes and when the material roll accelerates or decelerates, so that the tension value on the pole piece strip 200 remains stable. When the equipment needs to pause, the pole piece strip 200 needs to maintain the current tension. The servo motor 173 rotates uniformly in the reverse direction, so that the electromagnetic powder clutch 150 can have a reverse pulling force to hold the pole piece strip 200 and maintain the current tension.

[0044] In summary, for the roll material unwinding mechanism 100 provided in this embodiment, the reverse rotation of the servo motor 173 drives the rotation of the input shaft of the electromagnetic powder clutch 150 through spur gears, and adjusts the tension on the unwinding shaft 110 through the electromagnetic powder clutch 150, thereby realizing the stable control of the tension on the pole piece strip 200. And the servo motor 173 only needs to rotate uniformly in the reverse direction, without real-time adjustment, and only needs to be adjusted through the electromagnetic powder clutch 150, which simplifies the control process. At the same time, it can realize the smooth control of the tension such as acceleration when the pole piece strip 200 starts, uniform tape running, deceleration when pausing, and tension maintaining when pausing. In addition, since the transmission accuracy requirement between the driving member 170 and the electromagnetic powder clutch 150 is not high, spur gears can be used for transmission, the mechanical structure is simple, and the cost is saved. In the embodiment of the present invention, the reverse rotation of the motor drives the electromagnetic powder clutch 150 through spur gears to control the stable tension of the pole material strip, the tension control is stable, not affected by the roll diameter and weight, the program control is simple, the mechanical structure is simple, the motor power is small, the response speed of the electromagnetic powder clutch 150 is improved, thereby improving the production efficiency, improving the product quality, and reducing the equipment cost.

[0045] Second Embodiment

[0046] This embodiment provides a laser die-cutting and slitting integrated machine, including a mounting frame, a roll material winding mechanism, a slitting mechanism, and a roll material unwinding mechanism 100. The basic structure, principle, and technical effects generated by the roll material unwinding mechanism 100 are the same as those in the first embodiment. For a brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding content in the first embodiment.

[0047] In this embodiment, the laser die-cutting and slitting integrated machine includes a mounting frame, a coil rewinding mechanism, a slitting mechanism, and a coil unwinding mechanism 100. The coil unwinding mechanism 100, the slitting mechanism, and the coil rewinding mechanism are sequentially arranged on the mounting frame. The coil unwinding mechanism 100 includes an unwinding shaft 110, a mounting frame, a magnetic powder clutch 150, and a driving member 170. The driving member 170 is in transmission connection with the input shaft of the magnetic powder clutch 150. The output shaft of the magnetic powder clutch 150 is rotatably assembled on the mounting frame. The unwinding shaft 110 is in transmission connection with the output shaft of the magnetic powder clutch 150 and is used for carrying the pole piece strip 200. The rotation direction of the input shaft of the magnetic powder clutch 150 is opposite to the rotation direction of the unwinding shaft 110. The magnetic powder clutch 150 is used to adjust the tension of the unwinding shaft 110.

[0048] As described above, the above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A coiled material unwinding mechanism, characterized in that, It includes a pay-off reel, a mounting bracket, a magnetic powder clutch and a driving member. The driving member is in transmission connection with the input shaft of the magnetic powder clutch. The output shaft of the magnetic powder clutch is rotatably assembled on the mounting bracket. The pay-off reel is in transmission connection with the output shaft of the magnetic powder clutch. The pay-off reel is used to carry the pole piece strip. The rotation direction of the input shaft of the magnetic powder clutch is opposite to that of the pay-off reel. The magnetic powder clutch is used to adjust the tension of the pay-off reel; A first transmission gear is arranged on the output shaft of the driving member, a second transmission gear is arranged on the input shaft of the magnetic powder clutch, the first transmission gear and the second transmission gear are meshed with each other, and the driving member is used to drive the input shaft of the magnetic powder clutch to rotate; The diameter of the first transmission gear is half of the diameter of the second transmission gear; The mounting bracket includes a first mounting plate, a second mounting plate and a plurality of connecting rods. The first mounting plate and the second mounting plate are arranged oppositely. The output shaft of the magnetic powder clutch is rotatably assembled on the second mounting plate and the first mounting plate in sequence. The plurality of connecting rods are arranged between the first mounting plate and the second mounting plate, and two ends of each connecting rod are respectively connected with the first mounting plate and the second mounting plate; The first transmission gear and the second transmission gear are both spur gears, and the rotation direction of the output shaft of the driving member is opposite to that of the input shaft of the magnetic powder clutch; the input shaft of the magnetic powder clutch is a hollow shaft and is sleeved on the output shaft of the magnetic powder clutch through a bearing. The coil pay-off mechanism further includes a tension sensor. The tension sensor is connected with the magnetic powder clutch and is used to detect the tension value of the pole piece strip. The magnetic powder clutch is used to adjust the output force of the pay-off reel according to the tension value; Wherein, the rotation direction of the second transmission gear is opposite to that of the pay-off reel, and the rotation direction of the first transmission gear is the same as that of the pay-off reel.

2. The coiled material unwinding mechanism according to claim 1, characterized in that, The driving member includes a servo motor and a reducer. The servo motor is in transmission connection with the input shaft of the reducer, and the first transmission gear is arranged on the output shaft of the reducer.

3. The coiled material unwinding mechanism according to claim 1, characterized in that, A coupling is arranged at the end of the output shaft of the magnetic powder clutch. The coupling is connected with the pay-off reel, and the axis directions of the pay-off reel and the output shaft of the magnetic powder clutch are the same.

4. A laser die-cutting and slitting integrated machine, characterized in that, It includes a mounting frame, a coil rewinding mechanism, a slitting mechanism and the coil pay-off mechanism according to any one of claims 1-3. The coil pay-off mechanism, the slitting mechanism and the coil rewinding mechanism are arranged on the mounting frame in sequence.

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