Rewinding machine workstation for improving bamboo joint indentation paper defect

Abstract

The utility model discloses a rewinding machine workstation for improving bamboo joint indentation paper defects, which comprises side plates positioned on two sides of a paper roll, the side plates are provided with rotating shafts for driving the paper roll to rotate, the rotating shafts are driven by a driving mechanism to rotate, and the orientation of the rotating shafts is the same as that of a central drum of a rewinding machine. Each side plate is connected with different pushing mechanisms, the pushing mechanisms are used for pushing the side plates to move in the direction close to or away from the center drum, line pressure sensors are arranged at the joints of the pushing mechanisms and the side plates, the line pressure sensors are in signal connection with a controller, and the controller is in signal connection with the pushing mechanisms. The utility model aims to provide the rewinder workstation for improving bamboo joint indentation paper defects, so that the problems of dead lines or bamboo joint indentation paper defects and the like on the inner layer of a small roll are solved, and the appearance quality and the physical performance of paper products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rewinding machine workstations, in particular to a rewinding machine workstation for improving bamboo node indentation paper defects. Background Art

[0002] In the papermaking industry, rewinders are key equipment in the paper processing process, used to rewind wide paper rolls into narrower rolls for subsequent cutting, printing, and packaging. During operation, rewinders often experience vibrations in the rewinding station, leading to problems such as dead lines or slub marks on the inner layer of the rewinder's small rolls. For example, the German VOITH Vari-plus single-roller rewinder utilizes a pneumatic cylinder as the driving mechanism of its workstation. The cylinders on the two side plates extend and retract synchronously. However, over time, variations in paper thickness increase, and high-speed machine vibrations, coupled with instrumentation and electrical control deviations, can lead to problems such as dead lines or slub marks on the inner layer of the rewinder's small rolls, seriously affecting the appearance quality and physical properties of the paper products. Utility Model Content

[0003] In response to the above-mentioned existing technology, the utility model provides a rewinding machine workstation for improving bamboo knot indentation paper defects, thereby improving problems such as dead lines or bamboo knot indentation paper defects in the inner layer of small rolls, and improving the appearance quality and physical properties of paper products.

[0004] To achieve the above-mentioned purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0005] A workstation for a rewinder to improve bamboo node indentation paper defects includes side panels located on both sides of a paper roll, the side panels being provided with a rotating shaft for driving the paper roll to rotate, the rotating shaft rotating under the drive of a driving mechanism, the direction of the rotating shaft being the same as the direction of a center drum of the rewinder, each of the side panels being connected to a pushing mechanism respectively, the pushing mechanism being used to push the side panels to move toward and away from the center drum, a linear pressure sensor being provided at the connection between the pushing mechanism and the side panels, the linear pressure sensor being connected to a controller signal, and the controller being connected to the pushing mechanism signal.

[0006] Furthermore, the driving mechanism is an electric motor, a pneumatic motor or a hydraulic motor, and the electric motor, pneumatic motor or hydraulic motor is connected to the controller signal.

[0007] Furthermore, the pushing mechanism is an electric push rod, a telescopic cylinder or a hydraulic push rod, one side of the side panel is hinged to the rewinder, and the upper and lower ends of the pushing mechanism are provided with pins, the pin at the upper end of the pushing mechanism is rotatably connected to the side panel, and the pin at the lower end of the pushing mechanism is rotatably connected to the rewinder.

[0008] Furthermore, it also includes a base, which is fixed to the rewinding machine or fixed to the ground, and the base is rotatably connected to the side plates and the lower end of the pushing mechanism.

[0009] Furthermore, the line pressure sensor is provided at the connection point of the pin shaft.

[0010] Furthermore, the output shaft of the driving mechanism is connected to the rotating shaft via a coupling, and the coupling is an encoding coupling, and the encoding coupling is connected to the controller.

[0011] Furthermore, the controller is connected to an alarm signal.

[0012] The beneficial effects of the present invention are as follows: the line pressure sensor can monitor the pressure during operation and detect vibration during operation. When the line pressure deviation or fluctuation on both sides of the side plates is too large, the controller controls the driving mechanism to move the side plates on both sides of the paper roll, respectively, and fine-tune the inclination angle between the paper roll and the center drum until the line pressure deviation and fluctuation on both sides of the side plates return to the preset range, thereby avoiding the serious bamboo knot indentation in the middle of the rewound small paper roll, ensuring that the quality of the rewound small paper roll must be able to withstand post-processing such as cutting and printing, and improving the paper quality caused by the rewinding machine startup. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a rewinding machine workstation for improving slub indentation paper defects in an embodiment of the present application;

[0014] Figure 2 This is a structural diagram of the base, moving mechanism and side panels of a rewinding machine workstation for improving slub indentation paper defects according to an embodiment of the present application;

[0015] Figure 3 This is a structural diagram of a rewinding machine workstation for improving bamboo node indentation paper defects according to an embodiment of the present application;

[0016] Description of Figure Numbers:

[0017] 1. Paper roll; 2. Side panels; 3. Rotating shaft; 4. Pushing mechanism; 5. Linear pressure sensor; 6. Driving mechanism; 7. Pin shaft; 8. Coupling; 9. Alarm; 10. Center drum; 11. Base; 12. Paper web. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. In the following description, reference is made to "some embodiments", which describes a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0019] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0020] Example 1

[0021] Please refer to the attached Figures 1-3 The present application provides a workstation for a rewinding machine for improving bamboo node indentation paper defects, comprising side panels 2 located on both sides of a paper roll 1, the side panels 2 being provided with a rotating shaft 3 for driving the paper roll 1 to rotate, the rotating shaft 3 being driven by a driving mechanism 6 to rotate, the direction of the rotating shaft 3 being the same as the direction of the center drum 10 of the rewinding machine, each of the side panels 2 being connected to a pushing mechanism 4, that is, the side panel 2 on the left is connected to one pushing mechanism 4, and the side panel 2 on the right is connected to another pushing mechanism 4, the pushing mechanism 4 being used to push the side panel 2 to move toward and away from the center drum 10, a linear pressure sensor 5 being provided at the connection between the pushing mechanism 4 and the side panel 2, the linear pressure sensor 5 being connected to a controller signal, and the controller being connected to the pushing mechanism 4 signal.

[0022] In the rewinder, paper web 12 passes through center drum 10 and is wound onto paper roll 1, which is then rotated by shaft 3. Shaft 3 is rotatably connected to side plates 2 and driven by drive mechanism 6 to rewind paper web 12. Shaft 3 is oriented in the same direction as the rewinder's center drum 10. During the rewinding process, a linear pressure sensor 5 detects the force exerted by the push mechanism 4 on the side plates 2 and transmits the detected signal to a controller. This linear pressure sensor 5 monitors pressure during operation and detects vibrations. When the linear pressure deviation on both sides of the side plates 2 is too large or the fluctuation is too large, the controller controls the pushing mechanism 4 to move, and the pushing mechanism 4 can push the side plates 2 on both sides of the paper roll 1 to move respectively, and fine-tune the inclination angle of the paper roll 1 and the center drum 10 until the linear pressure deviation and fluctuation on both sides of the side plates 2 return to the preset range, thereby avoiding serious bamboo node indentation paper defects in the middle of the rewound small paper roll 1, ensuring that the quality of the rewound small paper roll 1 must withstand post-processing such as cutting and printing, and improving the paper product grade caused during the rewinding start-up.

[0023] Specifically, the drive mechanism 6 is an electric motor, a pneumatic motor, or a hydraulic motor. Optionally, the electric motor, pneumatic motor, or hydraulic motor is connected to a controller signal. The electric motor, pneumatic motor, or hydraulic motor is used to drive the rotating shaft 3 to rotate. It is understandable that the electric motor, pneumatic motor, or hydraulic motor can directly drive the rotating shaft 3 to rotate, or drive the rotating shaft 3 to rotate through any one of gear transmission, chain transmission, and belt rotation, or a combination of multiple methods. The controller controls the operation of the drive mechanism 6 by controlling the current of the electric motor and the fluid pressure of the pneumatic motor or hydraulic motor.

[0024] Specifically, the pushing mechanism 4 is an electric push rod, a telescopic cylinder, or a hydraulic push rod. The controller can control the current of the electric push rod, control the hydraulic switch of the telescopic cylinder or hydraulic push rod, and thus control the movement of the pushing mechanism 4. The telescopic cylinders or hydraulic push rods on both sides are controlled by separate control valves, that is, two control valves control two telescopic cylinders or hydraulic push rods. One side of the side panel 2 is hinged to the rewinder, and the upper and lower ends of the pushing mechanism 4 are both provided with pins 7. The pin 7 at the upper end of the pushing mechanism 4 is rotatably connected to the side panel 2, and the pin 7 at the lower end of the pushing mechanism 4 is rotatably connected to the rewinder. When the pushing mechanism 4 extends or shortens, it drives the side panel 2 to rotate, thereby driving the rotating shaft 3 toward or away from the center drum 10. By rotating the pin shaft 7 with the side plate 2 and the rewinder, the inclination angle of the paper roll 1 relative to the center drum 10 can be stably fine-tuned, thereby avoiding serious bamboo indentation in the middle of the rewound small paper roll 1, ensuring that the quality of the rewound small paper roll 1 must be able to withstand subsequent processing such as cutting and printing, and improving the paper quality caused during the rewinding process.

[0025] Specifically, it also includes a base 11, which is fixed to the rewinding machine or to the ground. When the rewinding machine is fixed to the ground, the base 11 is fixed to the rewinding machine or to the ground. The base 11 is fixed relative to the rewinding machine. The base 11 is rotatably connected to the side panel 2 and the lower end of the pushing mechanism 4, and the pushing mechanism 4 can be more conveniently installed on the base 11 and the side panel 2.

[0026] Specifically, the linear pressure sensor 5 is provided at the connection of the pin shaft 7. The force of the paper roll 1 on the side plate 2 will act on the connection of the pin shaft 7. The linear pressure sensor 5 at the connection of the pin shaft 7 can detect the force on both sides of the paper roll 1, providing accurate data for controlling the action of the pushing mechanism 4.

[0027] Example 2

[0028] Please refer to the attached Figures 1-3 This embodiment differs from Example 1 in that the output shaft of the drive mechanism 6 is connected to the rotating shaft 3 via a coupling 8, facilitating the drive mechanism 6 to drive the rotating shaft 3 in rotation. The coupling 8 is an encoder coupling 8, which is connected to the controller. The encoder coupling 8 can collect rotational speed data of the rotating shaft 3, thereby enabling speed differential monitoring of the paper roll 1, detecting speed fluctuations of the paper roll 1, and transmitting the collected data to the controller. When speed fluctuations are significant, an early warning is issued, allowing personnel to reduce the speed or inspect components such as the drive mechanism 6, thereby improving the paper quality caused during the rewinding process.

[0029] Specifically, the controller is connected to the alarm signal, and an alarm signal can be sent out through the alarm.

[0030] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A rewinding machine workstation for improving bamboo node indentation paper defects, characterized in that: It includes side plates located on both sides of the paper roll, and the side plates are provided with a rotating shaft for driving the paper roll to rotate. The rotating shaft rotates under the drive of the driving mechanism, and the direction of the rotating shaft is the same as the direction of the center drum of the rewinder. Each of the side plates is connected to a pushing mechanism, and the pushing mechanism is used to push the side plate to move toward and away from the center drum. A linear pressure sensor is provided at the connection between the pushing mechanism and the side plate. The linear pressure sensor is connected to the controller signal, and the controller is connected to the pushing mechanism signal.

2. The rewinding machine workstation for improving slub indentation paper according to claim 1, characterized in that: The driving mechanism is an electric motor, a pneumatic motor or a hydraulic motor, and the electric motor, pneumatic motor or hydraulic motor is connected to the controller signal.

3. The rewinding machine workstation for improving slub indentation paper according to claim 1, characterized in that: The pushing mechanism is an electric push rod, a telescopic cylinder or a hydraulic push rod. One side of the side plate is hinged to the rewinder. The upper and lower ends of the pushing mechanism are provided with pins. The pin at the upper end of the pushing mechanism is rotatably connected to the side plate, and the pin at the lower end of the pushing mechanism is rotatably connected to the rewinder.

4. The rewinding machine workstation for improving slub indentation paper defects according to claim 3, characterized in that: It also includes a base, which is fixed to the rewinding machine or to the ground, and is rotatably connected to the side plates and the lower end of the pushing mechanism.

5. A rewinding machine workstation for improving slub indentation paper according to claim 3 or 4, characterized in that: The line pressure sensor is provided at the connection of the pin shaft.

6. The rewinding machine workstation for improving slub indentation paper defects according to claim 1, characterized in that: The output shaft of the driving mechanism is connected to the rotating shaft via a coupling. The coupling is an encoding coupling, and the encoding coupling is connected to the controller.

7. A rewinding machine workstation for improving slub indentation paper according to any one of claims 1 to 4 or 6, characterized in that: The controller is connected to the alarm signal.

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