Tension-adjustable special paper winding device and winding method

Abstract

The invention relates to the technical field of special paper processing, in particular to a tension-adjustable special paper winding device and method. The invention discloses a tension-adjustable special paper winding device which comprises a support. The first end of the swing arm is mounted on the bracket in a swinging manner; the winding roller is rotatably mounted at the second end of the swing arm and is used for winding the specialty paper to form a paper roll; and the driving mechanism is in transmission connection with the winding roller and used for driving the winding roller to rotate, and the output torque of the driving mechanism can be adjusted. The driving mechanism comprises a rotating shaft connected with a power source; and the shaft sleeve is slidably sleeved on the rotating shaft and is in transmission connection with the rotating shaft. The periphery of the outer sleeve body is in meshed connection with the transmission wheel; and the plurality of permanent magnets are fixedly arranged on the inner peripheral wall of the outer sleeve body and are arranged in a surrounding manner in the circumferential direction of the rotating shaft. The device is simple and reliable in structure, stepless adjustment of tension of special paper can be achieved, the tension is kept stable, heat accumulation can be avoided, and the high temperature problem is prevented.

Description

Technical Field

[0001] This invention relates to the field of specialty paper processing technology, specifically to a tension-adjustable specialty paper winding device and winding method. Background Technology

[0002] In the production and post-processing of specialty paper, winding is one of the key processes determining the final roll quality. The uniformity and stability of winding tension control directly affect the roll's tightness, end-face flatness, and subsequent performance during slitting and use. Excessive tension may cause plastic deformation, coating damage, or paper breakage in the specialty paper; insufficient tension will result in loose rolls, "chrysanthemum patterns," or collapse, affecting transportation and storage, and causing problems for downstream processes.

[0003] Traditional winding devices typically use torque motors or magnetic powder clutches as the drive core, controlling the output torque by adjusting the current to achieve tension regulation. However, this approach has significant drawbacks. For example, torque motors suffer from poor torque output stability at low speeds and are prone to overheating during prolonged operation, leading to torque decay. Magnetic powder clutches, on the other hand, experience issues such as magnetic powder aging, decreased torque repeatability, and difficulty in heat dissipation, resulting in high maintenance costs. Furthermore, for multi-station synchronous or asynchronous winding requirements, traditional equipment often has a complex structure, requiring multiple independent drive and control units, which are costly and lack coordination. Summary of the Invention

[0004] In order to solve the technical problems existing in the background art, the present invention provides a special paper winding device and winding method with adjustable tension. Its structure is simple and reliable, and it can realize stepless adjustment of the force of special paper, maintain stable tension, and avoid heat accumulation and prevent high temperature problems.

[0005] The technical solution adopted by this invention to solve its technical problem is: A tension-adjustable special paper winding device, comprising: support; A swing arm, the first end of which is swayably mounted on a bracket; A take-up roller, rotatably mounted at the second end of a swing arm, is used to wind specialty paper to form a paper roll; The drive mechanism is connected to the winding roller drive and is used to drive the winding roller to rotate. The output torque of the drive mechanism can be adjusted. The tension of the winding roller when winding special paper is adjusted by regulating the output torque of the drive mechanism.

[0006] Furthermore, the first end of the swing arm is provided with a rotatable transmission wheel, which is connected to the take-up roller via a synchronous belt and to the drive mechanism via gear meshing.

[0007] Furthermore, the drive mechanism includes: The shaft is connected to a power source; A bushing is slidably fitted onto a rotating shaft and connected to the shaft for transmission.

[0008] Furthermore, the bushing includes: The outer casing is meshed with the drive wheel on its outer periphery. Multiple permanent magnets are fixedly installed on the inner circumferential wall of the outer casing and arranged around the axis of rotation.

[0009] Furthermore, several bushings are fitted on the rotating shaft, and the bushings are used to connect with the corresponding transmission wheels so that the corresponding take-up rollers can be driven to rotate independently through each transmission wheel.

[0010] Furthermore, the hinge includes: Inner core; A sleeve is fitted around the outer periphery of the inner core, and multiple permanent magnets are located on the outer periphery of the sleeve. Spiral grooves are formed on the outer periphery of the inner core, and sleeves cover the spiral grooves to form a closed flow channel.

[0011] Furthermore, a cylinder is installed between the bracket and the swing arm.

[0012] Furthermore, a gear is fixedly installed at the first end of the swing arm, and a bushing that meshes with the gear is fitted on the rotating shaft. The bushing drives the swing arm to swing through the gear.

[0013] Furthermore, the take-up roll presses against the drive roll, and the specialty paper passes between the take-up roll and the drive roll and is wound onto the take-up roll to form a paper roll.

[0014] A method for winding specialty paper with adjustable tension includes the following steps: a. The cylinder drives the swing arm to swing, and the take-up roller mounted on the swing arm presses against the drive roller; the special paper passes through the pressing area between the take-up roller and the drive roller and is wound on the take-up roller to form a paper roll. b. The rotating shaft rotates, which drives the multiple bushings on it to rotate; the bushings drive the corresponding take-up rollers to rotate through the corresponding transmission wheels, thereby enabling the take-up rollers at multiple stations to perform take-up operations independently. c. By changing the rotational speed of the shaft, the output torque of the bushing can be adjusted, thereby adjusting the winding torque transmitted from the bushing to the winding roller, and thus achieving the adjustment of the winding tension of special paper; d. Coolant is introduced into the spiral groove to cool the shaft and prevent it from overheating.

[0015] The beneficial effects of this invention are: (1) By adjusting the output torque of the drive mechanism, the winding torque of the winding roller can be indirectly controlled, thereby achieving precise and stepless control of the winding tension of special paper. This effectively prevents paper wrinkling, stretching deformation or breakage caused by improper tension, and significantly improves winding quality and yield.

[0016] (2) A single rotating shaft drives multiple bushings with permanent magnets, and each bushing independently drives the corresponding transmission wheel and winding roller, realizing the synchronous and independent operation of multiple winding stations. The torque of the winding rollers at each station can be uniformly adjusted by the rotation speed of the rotating shaft, or differentiated management can be achieved through the local design of the bushings, which improves the space utilization and production efficiency of the equipment and is suitable for large-scale, continuous production.

[0017] (3) A closed flow channel consisting of a spiral groove and a sleeve is set inside the shaft, which can actively cool the shaft by introducing coolant. It can effectively dissipate the heat generated by electromagnetic induction in the shaft, prevent problems such as magnetic attenuation and material deformation caused by overheating, and thus ensure the stability of the drive mechanism, torque transmission accuracy and service life of the equipment under long-term high load operation.

[0018] (4) The drive mechanism and the swing arm's pivot point are integrated into a single design via gears, resulting in a compact structure and reducing the need for complex components such as independent drive motors, reducers, and clutches found in traditional designs. The swing arm can be driven by a cylinder or a meshing bushing, simplifying the overall mechanical structure.

[0019] (5) The permanent magnet drive system has good buffering and overload protection capabilities, which can avoid impact damage caused by rigid connection during start-up, shutdown or paper jam. At the same time, the tension adjustment does not depend on the cylinder pressure or the wear of the friction plate, making the system more stable and reliable, with a longer maintenance cycle, and better able to meet the production needs of high tension control accuracy and possible fluctuations in working conditions during the special paper winding process. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the transmission principle of the present invention; Figure 3 This is a partial sectional view of the drive mechanism; Figure 4 This is a schematic diagram of the bushing structure; Figure 5 This is a partial sectional view of the rotating shaft; Figure 6 This is a diagram showing the usage state of the present invention.

[0022] In the picture: 1. Support frame, 2. Cylinder, 3. Drive mechanism, 4. Swing arm, 5. Take-up roll, 6. Paper roll, 7. Drive wheel, 8. Drive roller; 31. Bushing; 32. Shaft; 311. Outer shell; 312. Permanent magnet; 321. Sleeve, 322. Inner core, 323. Spiral groove. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] A tension-adjustable special paper winding device is disclosed, which is an improvement and upgrade based on existing winding devices. All related structures not described in detail are prior art.

[0025] like Figure 1 , 2 As shown, its specific structure includes a fixedly mounted bracket 1. The first end of a swing arm 4 is oscillatingly mounted on the bracket 1. A take-up roller 5 is rotatably mounted on the second end of the swing arm 4 for winding specialty paper to form a paper roll 6. The swing arm 4 is located at both ends of the take-up roller 5. A cylinder 2 is disposed between the bracket 1 and the swing arm 4, and the cylinder 2 can drive the swing arm 4 to press the take-up roller 5 against the drive roller 8. The specialty paper passes between the take-up roller 5 and the drive roller 8 and is wound onto the take-up roller 5 to form a paper roll 6.

[0026] The drive mechanism 3 is connected to the winding roller 5 for driving the winding roller 5 to rotate, and the output torque of the drive mechanism 3 is adjustable. By adjusting the output torque of the drive mechanism 3, the winding torque of the winding roller 5 can be indirectly controlled, thereby achieving precise and stepless control of the winding tension of special paper. This effectively prevents paper wrinkling, stretching deformation, or breakage caused by improper tension, significantly improving winding quality and yield.

[0027] In a specific embodiment, the first end of the swing arm 4 is provided with a rotatable transmission wheel 7. The transmission wheel 7 is connected to the take-up roller 5 via a synchronous belt and is also connected to the drive mechanism 3 via gear meshing. The drive mechanism 3 achieves a transmission connection with the take-up roller 5 through the above structure.

[0028] like Figure 3 As shown, the specific structure of the drive mechanism 3 includes a rotating shaft 32, which is connected to a power source such as a motor. A bushing 31 is slidably fitted onto the rotating shaft 32 and is connected to it in a transmission manner. The axial position of the bushing 31 on the rotating shaft 32 is adjustable. The position of the bracket 1 can also be adjusted along with the bushing 31, thereby changing the lateral position of the winding to adapt to the winding of special paper of different sizes and specifications.

[0029] like Figure 4As shown, the specific structure of the bushing 31 includes an outer sleeve 311, the outer periphery of which meshes with the drive wheel 7. Multiple permanent magnets 312 are fixedly disposed on the inner peripheral wall of the outer sleeve 311 and arranged circumferentially around the rotating shaft 32. The rotating shaft 32 can be made of non-magnetic metals such as aluminum. According to the principle of electromagnetic induction, the rotation of the rotating shaft 32 can drive the bushing 31 to rotate, and there will be a certain relative speed difference between the rotating shaft 32 and the bushing 31. The faster the rotation speed of the rotating shaft 32, that is, the greater the relative speed difference between the rotating shaft 32 and the bushing 31, the greater the torque transmitted from the rotating shaft 32 to the bushing 31, and thus the greater the tension of the take-up roller 5. Furthermore, this permanent magnet drive method has good buffering and overload protection capabilities, avoiding impact damage caused by rigid connections during start-up, shutdown, or paper jams. Meanwhile, the tension adjustment does not depend on cylinder pressure or friction plate wear, making the system more stable and reliable, with a longer maintenance cycle, and better able to adapt to the production needs of high tension control accuracy and possible fluctuations in working conditions during the winding of special paper.

[0030] like Figure 6 As shown, a number of bushings 31 are fitted on the rotating shaft 32. The bushings 31 are used to drive the corresponding transmission wheel 7 so that the corresponding take-up roller 5 can be driven to rotate independently through each transmission wheel 7.

[0031] A single rotating shaft 32 drives multiple bushings 31 with permanent magnets, and each bushing 31 independently drives its corresponding transmission wheel 7 and take-up roller 5, enabling synchronous and independent operation of multiple take-up stations. The torque of the take-up roller 5 at each station can be uniformly adjusted by the rotational speed of the rotating shaft 32, or differentiated by the local design of the bushings 31, improving the space utilization and production efficiency of the equipment, making it suitable for large-scale, continuous production.

[0032] like Figure 5 As shown, the specific structure of the rotating shaft 32 includes an inner core 322. A sleeve 321 is fitted around the outer periphery of the inner core 322, and multiple permanent magnets 312 are located around the outer periphery of the sleeve 321. A spiral groove 323 is formed around the outer periphery of the inner core 322, and the sleeve 321 covers the spiral groove 323 to form a closed flow channel. Holes communicating with the flow channel are provided at both ends of the rotating shaft 32 for connecting to a circulating chiller. The closed flow channel formed by the spiral groove 323 and the sleeve 321 inside the rotating shaft 32 allows for active cooling of the rotating shaft 32 by introducing coolant. This effectively dissipates the heat generated by electromagnetic induction in the rotating shaft 32, preventing problems such as magnetic attenuation and material deformation caused by overheating, thereby ensuring the stability, torque transmission accuracy, and service life of the drive mechanism 3 under long-term high-load operation.

[0033] In another embodiment, the cylinder 2 may not be provided between the bracket 1 and the swing arm 4. Instead, a gear can be fixedly installed at the first end of the swing arm 4, and a separate bushing 31 that meshes with the gear is fitted on the rotating shaft 32. The bushing 31 drives the swing arm 4 to swing through the gear. The bushing 31 can be designed separately so that the magnetic field strength of the bushing 31 that drives the swing arm 4 to swing is different from that of the bushing 31 that drives the transmission wheel 7 to rotate, thereby generating different torques for the two bushings 31 to meet the different functional requirements of the two bushings 31.

[0034] In another embodiment, a single rotating shaft 32 can be used as the power source to simultaneously drive the swing arm 4 to swing and the transmission wheel 7 to rotate, thus eliminating the need for the cylinder 2 between the support 1 and the swing arm 4. Specifically, a gear can be fixedly installed at the first end of the swing arm 4, and an independent bushing 31 that meshes with it can be fitted onto the rotating shaft 32. This bushing 31 meshes with the gear, converting the rotational motion of the rotating shaft 32 into the swinging motion of the swing arm 4. By customizing the bushings 31 separately, the bushings driving the swing arm 4 and the bushings driving the transmission wheel 7 can have different magnetic field strengths, thereby outputting different torques. This allows for matching torques to meet the different functional requirements of driving the swing arm 4 and driving the transmission wheel 7, thereby improving the control flexibility and adaptability of the entire system. In this way, the drive mechanism 3 and the swing fulcrum of the swing arm 4 are integrated into a single design using gears, resulting in a compact structure and reducing the complexity of components such as independent drive motors, reducers, and clutches found in traditional designs. The swing arm 4 can be driven by either the cylinder 2 or the bushing 31 it meshes with, simplifying the overall mechanical structure.

[0035] A method for winding specialty paper with adjustable tension includes the following steps: a. Cylinder 2 drives the swing arm 4 to swing, and the take-up roller 5 mounted on the swing arm 4 presses against the drive roller 8. Special paper passes through the pressing area between the take-up roller 5 and the drive roller 8 and is wound onto the take-up roller 5 to form a paper roll 6.

[0036] b. The rotating shaft 32 rotates, driving multiple bushings 31 on it to rotate. Each bushing 31 drives a corresponding take-up roller 5 to rotate via a corresponding transmission wheel 7, thus enabling the take-up rollers 5 at multiple stations to perform independent take-up operations. Since the rotational speed of the take-up rollers 5 at each station is basically the same, that is, the speed difference between the rotating shaft 32 and the bushings 31 is also basically the same, the torque transmitted from the rotating shaft 32 to the bushings 31 remains stable, thereby ensuring that each take-up roller 5 maintains a constant take-up tension during operation. Even if there are slight changes in the rotational speed of each take-up roller 5, it will not cause significant fluctuations in the take-up tension.

[0037] c. By changing the rotational speed of the shaft 32, the output torque of the bushing 31 can be adjusted, thereby adjusting the winding torque transmitted from the bushing 31 to the winding roller 5, and thus realizing the adjustment of the winding tension of the special paper.

[0038] d. Coolant is introduced into the spiral groove 323 to cool the shaft 32 and prevent the shaft 32 from overheating due to electromagnetic induction.

[0039] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A tension-adjustable special paper winding device, characterized in that, include: Support (1); A swing arm (4), the first end of which is swayably mounted on the bracket (1); A take-up roller (5) is rotatably mounted on the second end of the swing arm (4) for winding special paper to form a paper roll (6). The drive mechanism (3) is connected to the take-up roller (5) for driving the take-up roller (5) to rotate, and the output torque of the drive mechanism (3) can be adjusted. The tension of the take-up roller (5) when winding special paper is adjusted by adjusting the output torque of the drive mechanism (3).

2. The tension-adjustable special paper winding device according to claim 1, characterized in that, The first end of the swing arm (4) is provided with a rotatable transmission wheel (7), which is connected to the winding roller (5) via a synchronous belt and to the drive mechanism (3) via gear meshing.

3. The tension-adjustable special paper winding device according to claim 2, characterized in that, The drive mechanism (3) includes: The rotating shaft (32) is connected to a power source; The bushing (31) is slidably sleeved on the rotating shaft (32) and is connected to the rotating shaft (32) in a transmission manner.

4. The tension-adjustable special paper winding device according to claim 3, characterized in that, The bushing (31) includes: The outer casing (311) is engaged with the transmission wheel (7) on its outer periphery; Multiple permanent magnets (312) are fixedly disposed on the inner peripheral wall of the outer casing (311) and arranged around the circumference of the rotating shaft (32).

5. A tension-adjustable special paper winding device according to claim 4, characterized in that, The rotating shaft (32) is fitted with several bushings (31), which are used to drive the corresponding drive wheel (7) to rotate independently through each drive wheel (7).

6. A tension-adjustable special paper winding device according to claim 4, characterized in that, The rotating shaft (32) includes: Inner core (322); A sleeve (321) is fitted around the outer periphery of the inner core (322), and a plurality of permanent magnets (312) are located around the outer periphery of the sleeve (321); A spiral groove (323) is formed on the outer periphery of the inner core (322), and the sleeve (321) covers the spiral groove (323) to form a closed flow channel.

7. A tension-adjustable special paper winding device according to claim 1, characterized in that, A cylinder (2) is provided between the bracket (1) and the swing arm (4).

8. A tension-adjustable special paper winding device according to claim 4, characterized in that, A gear is fixedly provided at the first end of the swing arm (4), and a bushing (31) that meshes with the gear is sleeved on the rotating shaft (32). The bushing (31) drives the swing arm (4) to swing through the gear.

9. A tension-adjustable special paper winding device according to claim 1, characterized in that, The take-up roller (5) presses against the drive roller (8), and the special paper passes between the take-up roller (5) and the drive roller (8) and is wound on the take-up roller (5) to form a paper roll (6).

10. A tension-adjustable special paper winding method, based on the tension-adjustable special paper winding device according to any one of claims 1-9, characterized in that, Includes the following steps: a. The cylinder (2) drives the swing arm (4) to swing, and the take-up roller (5) mounted on the swing arm (4) presses against the drive roller (8); the special paper passes through the pressing area between the take-up roller (5) and the drive roller (8) and is wound on the take-up roller (5) to form a paper roll (6). b. The rotating shaft (32) rotates, and the rotating shaft (32) drives the multiple bushings (31) on it to rotate; the bushings (31) drive the corresponding winding rollers (5) to rotate through the corresponding transmission wheels (7), thereby realizing that the winding rollers (5) at multiple workstations can independently perform winding operations; c. By changing the rotation speed of the shaft (32), the output torque of the bushing (31) can be adjusted, thereby adjusting the winding torque transmitted from the bushing (31) to the winding roller (5), and thus realizing the adjustment of the winding tension of the special paper; d. Coolant is introduced into the spiral groove (323) to cool the shaft (32) and prevent it from overheating.

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