A rotating speed synchronous guide roller device for tension control of a coating machine

Abstract

This utility model discloses a speed synchronization guide roller device for tension control of a coating machine, used for the synchronous rotation of the paper web at both edges and the center. It includes a first bearing seat, a second bearing seat, a cylindrical guide roller, and a central rotating shaft. The guide roller is a cylindrical structure with semi-circular ribs on its inner wall, and is coaxially mounted on the central rotating shaft. The two ends of the central rotating shaft are rotatably mounted on the first and second bearing seats via two symmetrically arranged bearings. The surface of the guide roller has two symmetrically arranged spiral grooves centered on the centerline of the roller and along its axial cross-section. The guide roller is integrally made of aluminum alloy, reducing the weight of the entire roller by more than half, effectively reducing weight resistance during operation, effectively solving the problem of asynchronous rotation between the paper and the guide roller, effectively preventing material accumulation and inability to rotate at the edges of the guide roller, and effectively improving coating production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tension control technology for paper web of coating machines, and in particular to a speed synchronization guide roller device for tension control of coating machines. Background Technology

[0002] Tension control is a crucial step in the coating process, as it directly affects the quality of the coating material, the uniformity of the coating, and the stability of the production process.

[0003] In existing technologies, the paper web tension control on both sides of the guide rollers of a coating machine is mainly achieved through sensor detection and automatic adjustment. During operation, tension sensors monitor the paper web tension on both sides of the guide rollers in real time. The PLC or control system compares the detected signals with preset values ​​and automatically adjusts the servo motor or frequency converter to achieve dynamic adjustment. When the automatic system cannot meet specific requirements, operators can manually fine-tune the system by adjusting the position and angle of components such as the guide rollers and tension rollers.

[0004] In addition, during the transmission of coated paper web through guide rollers, the design of the transmission device and guide rollers can reduce frictional resistance and tension fluctuations. This is because papermaking guide rollers are mainly used in papermaking machinery to guide and stabilize the transmission of the paper web, ensuring stable tension to guarantee production efficiency and paper quality. In practice, the guide rollers are supported by bearings to rotate. Under the friction of the paper's movement, the roller body can rotate freely. When the rotation speed reaches a certain speed, it can also help to stretch the paper and prevent wrinkling. The normal tension setting of the guide rollers is 100 N / m, which can achieve synchronous rotation between the guide rollers and the paper web. However, in the existing technology, because the guide rollers themselves have no transmission and are heavy, the paper and guide roller transmission cannot be synchronized. During use, this leads to material accumulation on both sides of the guide rollers and failure to stretch, resulting in wrinkling on both sides of the paper web. This, in turn, causes paper breakage and damage, resulting in low production efficiency and affecting the quality of the paper being processed.

[0005] Therefore, it is urgent to optimize the existing guide roller structure to effectively reduce the flatness tolerance of the paper web end face and avoid wrinkling problems on both sides of the paper web caused by slow rotation speed. Utility Model Content

[0006] This utility model provides a speed synchronization guide roller device for tension control of a coating machine. The guide roller in contact with the paper is made of aluminum alloy in a hollow ribbed cylindrical structure, which reduces the weight of the entire roller by more than half, effectively reducing the weight resistance during operation, effectively solving the problem of asynchronous speed between the paper and the guide roller, realizing stable tension during coating operation, effectively avoiding the problems of material accumulation on both sides of the guide roller and failure to spread, and effectively improving the production efficiency of coating.

[0007] The technical solution adopted by this utility model to solve its technical problem is: A speed synchronization guide roller device for tension control of a coating machine is used for the simultaneous stretching of the two sides of the paper web and the synchronous rotation of the center. It includes a first bearing seat, a second bearing seat, a cylindrical guide roller and a central rotating shaft. The guide roller is a cylindrical structure with semi-circular arc ribs on the inner wall. The guide roller is coaxially mounted on the central rotating shaft. The central rotating shaft is rotatably mounted on the first bearing seat and the second bearing seat through two symmetrically arranged bearings at both ends. The friction force of the paper on the coating machine drives the guide roller and the central rotating shaft to rotate synchronously between the first bearing seat and the second bearing seat. The surface of the guide roller is engraved with two extended thread grooves that are symmetrically arranged along the axial cross-section of the guide roller with the center line of the guide roller as the center of symmetry. The line width of the extended thread grooves is 1 to 5 mm and the depth is 0.5 to 1.2 mm.

[0008] Preferably, the included angle between the two symmetrically arranged extended thread grooves is 10°~15°.

[0009] Preferably, the included angle between the two symmetrically arranged extended threaded grooves is 11°.

[0010] Preferably, the pitch of the extended thread groove is 48 and the lead is 96.

[0011] Preferably, the width of the extended threaded groove is 3 mm and the depth is 1 mm.

[0012] Preferably, the guide roller is a cylindrical roller structure with hollow ribs, integrally made of aluminum alloy material.

[0013] Preferably, the central rotating shaft is integrally manufactured from 45# steel after heat treatment, and has a rotating shaft structure with symmetrical double shoulders on both sides. The two ends of the central rotating shaft are respectively connected to each bearing assembly through locking sleeves. A thrust ring for axially limiting the bearing is also provided between the first bearing housing, the second bearing housing and the bearing.

[0014] The beneficial effects of this utility model are: Two symmetrically arranged spiral grooves are engraved on the smooth surface of the guide roller, with the center line of the guide roller as the center of symmetry and along the axial cross-section of the guide roller. This can effectively increase the friction between the surface of the guide roller and the paper, so that the rotation speed of the entire roller is consistent with the running speed of the coated paper. At the same time, the two symmetrically arranged spiral grooves can make the paper web spread out to both sides, which also overcomes the paper wrinkling phenomenon, effectively avoids the problem of material accumulation and inability to spread out on both sides of the guide roller, effectively improves the quality and output of the product, and increases the product qualification rate.

[0015] In addition, in this invention, the guide roller is made of aluminum alloy in one piece and has a hollow ribbed cylindrical roller structure while keeping the size unchanged. This reduces the weight of the entire roller by more than half. While expanding the threaded groove to increase friction, it effectively reduces the weight resistance during operation, further solves the problem of asynchronous rotation speed between the paper and the guide roller, achieves stable tension during coating operation, and effectively improves the production efficiency of coating.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the assembly structure of the guide roller and the central rotating shaft in this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Terms such as "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, if the terms "first" and "second" are used only to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0021] Furthermore, in the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be reasonably determined in conjunction with the specific content of the technical solution.

[0022] A speed-synchronizing guide roller device for tension control of a coating machine, such as Figures 1 to 3 As shown, the device, used for the stretching of the two edges and synchronous rotation of the center of the paper web in a coating machine, includes a first bearing seat 1, a second bearing seat 2, a cylindrical guide roller 3, and a central rotating shaft 4. The guide roller 3 is a cylindrical structure with semi-circular ribs on its inner wall. The guide roller 3 is coaxially mounted on the central rotating shaft 4. In a specific implementation, the guide roller 3 is a cylindrical roller structure made of aluminum alloy with hollow ribs. The two ends of the central rotating shaft 4 are rotatably mounted on the first bearing seat 1 and the second bearing seat 2 through two symmetrically arranged bearings 5. The central rotating shaft 4 is a rotating shaft structure made of 45# steel after heat treatment and has symmetrical double shoulders on both sides. The two ends of the central rotating shaft 4 are respectively connected to each bearing 5 through locking sleeves. The first bearing seat 1, the second bearing seat 2, and the bearings 5 ​​are connected to each other. A thrust ring is also provided to axially limit the bearing. Two spreading thread grooves 6 are engraved on the surface of the guide roller 3, with the center line of the guide roller 3 as the center of symmetry and symmetrically arranged along the axial cross-section of the guide roller 3. The two symmetrically arranged spreading thread grooves 6 can effectively improve the friction between the surface of the guide roller 3 and the paper. The friction of the paper on the coating machine drives the guide roller 3 and the central rotating shaft 4 to rotate synchronously between the first bearing seat 1 and the second bearing seat 2, so that the rotation speed of the entire roller is consistent with the running speed of the coated paper. At the same time, the two symmetrically arranged spreading thread grooves 6 can make the paper web spread out to both sides, effectively overcome the paper wrinkling phenomenon, effectively avoid the problem of material accumulation and inability to spread on both sides of the guide roller, effectively improve the quality and output of the product, and improve the product qualification rate.

[0023] like Figure 1 and Figure 2 As shown, in this embodiment, the width of the extended thread groove 6 is 1-5 mm and the depth is 0.5-1.2 mm, preferably the width of the extended thread groove 6 is 3 mm and the depth is 1 mm; the included angle between two symmetrically arranged extended thread grooves 6 is preferably 11°, and the pitch of the extended thread groove 6 is preferably 48 and the lead is 96.

[0024] In this embodiment, the guide roller 3, while maintaining the same size, is integrally made of aluminum alloy with a hollow cylindrical roller structure, reducing the weight of the entire roller by more than half. While increasing friction by widening the threaded grooves 6, it effectively reduces weight resistance during operation, further solving the problem of asynchronous rotation speed between the paper and the guide roller. After the coating machine is started, the tension is stabilized during coating operation, improving the success rate of start-up and effectively avoiding the quality problem of back roller imprint caused by accumulated material falling into the back roller. At the same time, the improved guide roller 3 only needs to be wiped and cleaned once every 5 minutes to ensure normal operation, effectively reducing the workload of production operators and improving coating production efficiency.

[0025] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. All equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A speed-synchronizing guide roller device for tension control of a coating machine, used for the synchronous rotation of the paper web's two side edges and center, characterized in that, It includes a first bearing seat, a second bearing seat, a cylindrical guide roller, and a central rotating shaft. The guide roller is a cylindrical structure with semi-circular arc ribs on its inner wall, and the guide roller is coaxially mounted on the central rotating shaft. The central rotating shaft is rotatably mounted on the first bearing seat and the second bearing seat through two symmetrically arranged bearings at both ends. The friction force of the paper on the coating machine drives the guide roller and the central rotating shaft to rotate synchronously between the first bearing seat and the second bearing seat. The surface of the guide roller is engraved with two extended thread grooves that are symmetrically arranged along the axial cross-section of the guide roller with the center line of the guide roller as the center of symmetry. The line width of the extended thread grooves is 1 to 5 mm and the depth is 0.5 to 1.2 mm.

2. The speed synchronization guide roller device for tension control of a coating machine according to claim 1, characterized in that: The included angle between the two symmetrically arranged extended threaded grooves is 10°~15°.

3. The speed synchronization guide roller device for tension control of a coating machine according to claim 1, characterized in that: The included angle between the two symmetrically arranged extended threaded grooves is 11°.

4. The speed synchronization guide roller device for tension control of a coating machine according to claim 1, characterized in that: The pitch of the extended thread groove is 48, and the lead is 96.

5. A speed synchronization guide roller device for tension control of a coating machine according to claim 1, characterized in that: The width of the extended threaded groove is 3 mm and the depth is 1 mm.

6. The speed synchronization guide roller device for tension control of a coating machine according to claim 1, characterized in that: The guide roller is a cylindrical roller structure with hollow ribs, integrally made of aluminum alloy.

7. The speed synchronization guide roller device for tension control of a coating machine according to claim 1, characterized in that: The central rotating shaft is made of 45# steel after quenching and tempering, and has a rotating shaft structure with symmetrical double shoulders on both sides. The two ends of the central rotating shaft are respectively connected to each bearing assembly through locking sleeves. Thrust rings for axial limiting of the bearings are also provided between the first bearing housing, the second bearing housing and the bearing.

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