Edge falling prevention device for edge of vacuum roller

Abstract

The utility model relates to the technical field of vacuum roller edge anti-edge-falling devices, in particular to a vacuum roller edge anti-edge-falling device which comprises a vacuum roller body, the vacuum roller body is arranged on the outer side of an inner roller in a sleeved mode, an annular cavity is formed between the vacuum roller body and the inner roller, and a convex sealing ring is arranged between the inner wall of the vacuum roller body and the outer wall of the inner roller. The convex sealing rings are arranged in the circumferential direction and are in interference fit with the vacuum roller body and the inner roller. The integral sealing performance is effectively improved through a multi-sealing structure, air leakage can be effectively prevented through interference fit of the convex sealing ring, the vacuum roller body and the inner roller, arrangement of the sealing ring on the attaching face of the flange plate and the vacuum roller body and matching of the sealing piece between the sealing end cover and the shaft, the stability of the vacuum environment in the annular cavity is guaranteed, and the service life of the vacuum roller is prolonged. And the situation that the edge material of the roller body is subjected to uneven stress due to uneven vacuum pressure is reduced, so that the occurrence probability of the phenomena of edge deformation, damage and edge falling is reduced, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum roller edge anti-fall-off device, and in particular to a vacuum roller edge anti-fall-off device. Background Technology

[0002] In fields such as papermaking and film production, vacuum rollers are a key piece of equipment. They utilize an internal vacuum environment to achieve functions such as adsorption, traction, and dehydration of materials like paper and film. However, in practical applications, the edges of vacuum rollers are prone to chipping, which can severely affect product quality and production efficiency.

[0003] The main reason for edge chipping is that during the operation of the vacuum roller, the material at the edge of the roller is subjected to uneven stress due to the internal vacuum pressure. After long-term operation, it is prone to deformation and damage, resulting in air leakage, which affects the vacuum effect and further aggravates edge wear and chipping. Based on this, a vacuum roller edge anti-chipping device is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device to prevent edge chipping on a vacuum roller. This device solves the problem that during the operation of a vacuum roller, the material at the edge of the roller is subjected to uneven stress due to the internal vacuum pressure, which can easily lead to deformation and damage after long-term operation, resulting in air leakage, affecting the vacuum effect, and further aggravating edge wear and chipping.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vacuum roller edge anti-fall-off device, comprising a vacuum roller body, wherein the vacuum roller body is sleeved on the outside of the inner roller, and an annular cavity is formed between the two. A convex sealing ring is provided between the inner wall of the vacuum roller body and the outer wall of the inner roller, wherein the convex sealing ring is arranged circumferentially and is interference-fitted with the vacuum roller body and the inner roller.

[0006] A further improvement is that the inner roller is provided with a shaft running through it along the axial direction. The shaft is interference-fitted with the inner roller, and both ends of the shaft extend to the outside of the vacuum roller body. A flange is provided at one end of the shaft, and the end face of the flange is in contact with the end face of the vacuum roller body.

[0007] A further improvement is that the flange is fixedly connected to the vacuum roller body by circumferentially distributed fasteners. A sealing ring is provided between the mating surfaces of the flange and the vacuum roller body. A locating pin is provided on the radially outer side of the flange, with one end of the locating pin inserted into the pin hole of the flange and the other end inserted into the pin hole of the vacuum roller body. A flange is provided at one end of the shaft, and the end face of the flange is in contact with the end face of the vacuum roller body. The flange is fixedly connected to the vacuum roller body by circumferentially distributed fasteners. This fixing method ensures that the connection between the flange and the vacuum roller body is firm and reliable.

[0008] A further improvement is that a bearing is provided at the connection between the shaft and the flange. The inner ring of bearing one is interference-fitted with the shaft, and the outer ring of bearing one is interference-fitted with the inner hole of the flange. A bearing two is provided at the other end of the shaft, and the inner ring of bearing two is interference-fitted with the shaft. The function of the locating pin is to ensure the accurate relative position between the flange and the vacuum roller body, and to prevent relative displacement during operation, thereby ensuring the sealing performance and the stability of the overall structure. A bearing is provided at the connection between the shaft and the flange. The inner ring of bearing one is interference-fitted with the shaft, and the outer ring of bearing one is interference-fitted with the inner hole of the flange.

[0009] A further improvement is that a washer is provided on the outer side of the second bearing, one side of which is in contact with the outer ring end face of the second bearing, and a sealing end cap is provided on the other side. The sealing end cap is fixedly connected to the vacuum roller body by fasteners evenly distributed around the circumference.

[0010] A further improvement is that a sealing element is provided between the inner hole of the sealing end cap and the shaft, the inner ring of the sealing element slides with the shaft, the outer ring of the sealing element is interference-fitted with the inner hole of the sealing end cap, and an adjustment device is provided on the outer side of the sealing end cap; a second bearing is provided at the other end of the shaft, the inner ring of the second bearing is interference-fitted with the shaft; a washer is provided on the outer side of the second bearing, one side of the washer is in contact with the end face of the outer ring of the second bearing, and the other side is provided with the sealing end cap.

[0011] A further improvement is that the adjustment device is fixedly connected to the sealing end cover by fasteners. The adjustment device includes an adjustment bolt and an adjustment nut. One end of the adjustment bolt is threaded to the sealing end cover, and the other end extends to the outside of the adjustment device and cooperates with the adjustment nut. The function of the seal is to prevent air from leaking from the connection between the sealing end cover and the shaft, thus ensuring the sealing of the vacuum environment. An adjustment device is provided on the outside of the sealing end cover, and the adjustment device is fixedly connected to the sealing end cover by fasteners.

[0012] By employing the above technical solution, this utility model provides a device for preventing edge detachment of a vacuum roller, which has at least the following beneficial effects:

[0013] 1. This utility model effectively improves the overall sealing performance through a multi-seal structure. The interference fit between the convex sealing ring and the vacuum roller body and inner roller, the setting of the sealing ring on the contact surface between the flange and the vacuum roller body, and the fit between the sealing end cover and the shaft can effectively prevent air leakage, ensure the stability of the vacuum environment in the annular cavity, and reduce the uneven stress on the edge material of the roller body caused by uneven vacuum pressure. This reduces the probability of edge deformation, breakage and edge chipping, which is conducive to improving product quality and production efficiency.

[0014] 2. The coordinated operation of the components in this utility model device enhances the stability and reliability of the overall structure. The positioning pin ensures the accurate relative position of the flange and the vacuum roller. Bearing 1 and bearing 2 provide stable support for the shaft. The adjustment device can adjust the gap between the sealing end cover and the shaft and the bearing preload, reducing the damage to the edges caused by vibration and impact during high-speed operation, extending the service life of the device, and reducing the frequency of downtime maintenance due to edge chipping, further ensuring the continuity and efficiency of production. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the present invention.

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0021] Figure 5 This is a partially enlarged structural schematic diagram of the present invention.

[0022] In the diagram: 1. Vacuum roller body; 2. Fastener; 3. Sealing ring; 4. Flange; 5. Locating pin; 6. Convex sealing ring; 7. Inner roller; 8. Shaft; 9. Bearing 1; 10. Cavity; 11. Bearing 2; 12. Washer; 13. Fastener; 14. Sealing end cap; 15. Seal; 16. Adjusting device; 17. Fastener. Detailed Implementation

[0023] 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.

[0024] During the operation of a vacuum roller, the material at the roller edge is subjected to uneven stress due to the internal vacuum pressure. After prolonged operation, this can easily lead to deformation and breakage, causing air leakage, affecting the vacuum effect, and further exacerbating edge wear and chipping. This embodiment provides a device to prevent edge chipping of a vacuum roller. Please refer to [reference needed]. Figures 1-5 An embodiment provides a vacuum roller edge anti-fall-off device, including a vacuum roller body 1, which is sleeved on the outside of an inner roller 7, forming an annular cavity 10 between them. A convex sealing ring 6 is provided between the inner wall of the vacuum roller body 1 and the outer wall of the inner roller 7. The convex sealing ring 6 is arranged circumferentially and has an interference fit with the vacuum roller body 1 and the inner roller 7. A shaft 8 is axially inserted through the inner roller 7 and has an interference fit with the inner roller 7. Both ends of the shaft 8 extend to the outside of the vacuum roller body 1. A flange 4 is provided at one end of the shaft 8, and the end face of the flange 4 is in contact with the end face of the vacuum roller body 1. The flange 4 is fixedly connected to the vacuum roller body 1 by circumferentially distributed fasteners 2. A sealing ring 3 is provided between the contact surfaces of the flange 4 and the vacuum roller body 1. A positioning pin 5 is provided on the radially outer side of the flange 4. One end of the positioning pin 5 is inserted into the pin hole of the flange 4, and the other end is inserted into the pin hole of the vacuum roller body 1. A bearing 9 is provided at the connection between the shaft 8 and the flange 4. The inner ring of bearing 11 is interference-fitted with shaft 8, and the outer ring of bearing 19 is interference-fitted with the inner hole of flange 4. Bearing 21 is provided at the other end of shaft 8, and the inner ring of bearing 21 is interference-fitted with shaft 8. A washer 12 is provided on the outer side of bearing 21, one side of which is in contact with the end face of the outer ring of bearing 21, and a sealing end cap 14 is provided on the other side. The sealing end cap 14 is fixedly connected to vacuum roller body 1 by fasteners 13 evenly distributed around the circumference. A sealing element 15 is provided between the inner hole of sealing end cap 14 and shaft 8. The inner ring of sealing element 15 is in sliding fit with shaft 8, and the outer ring of sealing element 15 is interference-fitted with the inner hole of sealing end cap 14. An adjusting device 16 is provided on the outer side of sealing end cap 14. The adjusting device 16 is fixedly connected to sealing end cap 14 by fasteners 17. The adjusting device 16 includes adjusting bolt and adjusting nut. One end of adjusting bolt is threaded to sealing end cap 14, and the other end extends to the outside of adjusting device 16 and engages with adjusting nut.

[0025] Working principle: When the vacuum roller starts working, the entire device is first driven to operate by the rotation of shaft 8. Shaft 8 is interference-fitted with inner roller 7, which is sleeved on the outside of vacuum roller body 1, forming an annular cavity 10 between them. This cavity is the key area for realizing the vacuum adsorption function. A convex sealing ring 6 is provided between the inner wall of vacuum roller body 1 and the outer wall of inner roller 7. The convex sealing ring 6 is arranged circumferentially and is interference-fitted with vacuum roller body 1 and inner roller 7. This interference fit ensures that the convex sealing ring 6 can fit tightly against vacuum roller body 1 and inner roller 7, thereby effectively preventing air leakage from both ends of the annular cavity 10 and ensuring the stability of the vacuum environment.

[0026] A flange 4 is provided at one end of the shaft 8, and the end face of the flange 4 is in contact with the end face of the vacuum roller body 1. The flange 4 is fixedly connected to the vacuum roller body 1 by fasteners 2 evenly distributed around the circumference. This fixing method ensures that the connection between the flange 4 and the vacuum roller body 1 is firm and reliable. At the same time, a sealing ring 3 is provided between the contact surfaces of the flange 4 and the vacuum roller body 1. The sealing ring 3 further enhances the sealing performance and prevents air from leaking from the connection between the flange 4 and the vacuum roller body 1.

[0027] A locating pin 5 is provided on the radially outer side of the flange 4. One end of the locating pin 5 is inserted into the pin hole of the flange 4, and the other end is inserted into the pin hole of the vacuum roller body 1. The function of the locating pin 5 is to ensure the accurate relative position between the flange 4 and the vacuum roller body 1, and to prevent relative displacement during operation, thereby ensuring sealing performance and the stability of the overall structure. A bearing 9 is provided at the connection between the shaft 8 and the flange 4. The inner ring of the bearing 9 is interference-fitted with the shaft 8, and the outer ring of the bearing 9 is interference-fitted with the inner hole of the flange 4. The function of the bearing 9 is to support the rotation of the shaft 8, reduce friction and wear between the shaft 8 and the flange 4, and improve the operating efficiency and service life of the device.

[0028] A bearing 11 is provided at the other end of the shaft 8, with its inner ring interference fit with the shaft 8. A washer 12 is provided on the outer side of the bearing 11, with one side of the washer 12 fitting against the outer ring end face of the bearing 11 and the other side having a sealing end cap 14. The sealing end cap 14 is fixedly connected to the vacuum roller body 1 by circumferentially distributed fasteners 13. The bearing 11 and washer 12 support the other end of the shaft 8, ensuring the shaft 8 remains stable during rotation. The washer 12 also helps to adjust the position and preload of the bearing 11. A sealing element 15 is provided between the inner hole of the sealing end cap 14 and the shaft 8, with the inner ring of the sealing element 15 slidingly fitting against the shaft 8 and the outer ring of the sealing element 15 interference fit against the inner hole of the sealing end cap 14. The function of the seal 15 is to prevent air leakage from the connection between the sealing end cover 14 and the shaft 8, thus ensuring the airtightness of the vacuum environment. An adjustment device 16 is provided on the outside of the sealing end cover 14. The adjustment device 16 is fixedly connected to the sealing end cover 14 by fasteners 17. The adjustment device 16 includes an adjustment bolt and an adjustment nut. One end of the adjustment bolt is threaded to the sealing end cover 14, and the other end extends to the outside of the adjustment device 16 and cooperates with the adjustment nut. The function of the adjustment device 16 is to adjust the gap between the sealing end cover 14 and the shaft 8 by cooperating with the adjustment bolt and the adjustment nut, thereby ensuring the sealing effect of the seal 15. At the same time, it can also adjust the preload of the bearing 11 to ensure the rotational accuracy and stability of the shaft 8.

[0029] In summary, this vacuum roller edge anti-fall-off device ensures the stability of the vacuum environment through the sealing effect of components such as the convex sealing ring 6, sealing ring 3, and sealing element 15; it reduces friction and wear through the supporting effect of components such as bearing 1 9 and bearing 2 11, thereby improving the operating efficiency and service life of the device; and it ensures the stability and sealing of the overall structure through the positioning and adjustment effects of components such as flange 4, positioning pin 5, and adjusting device 16. The synergistic effect of these components effectively prevents the occurrence of vacuum roller edge falling off, thereby improving product quality and production efficiency.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum roller edge anti-fall-off device, comprising a vacuum roller body (1), characterized in that: The vacuum roller body (1) is sleeved on the outside of the inner roller (7), forming an annular cavity (10) between them. A convex sealing ring (6) is provided between the inner wall of the vacuum roller body (1) and the outer wall of the inner roller (7). The convex sealing ring (6) is arranged circumferentially and is interference-fitted with the vacuum roller body (1) and the inner roller (7).

2. The vacuum roller edge anti-fall-off device according to claim 1, characterized in that: The inner roller (7) is provided with a shaft (8) through it along the axial direction. The shaft (8) is interference-fitted with the inner roller (7). Both ends of the shaft (8) extend to the outside of the vacuum roller body (1). A flange (4) is provided at one end of the shaft (8). The end face of the flange (4) is in contact with the end face of the vacuum roller body (1).

3. The vacuum roller edge anti-fall-off device according to claim 2, characterized in that: The flange (4) is fixedly connected to the vacuum roller body (1) by fasteners (2) evenly distributed around the circumference. A sealing ring (3) is provided between the mating surfaces of the flange (4) and the vacuum roller body (1). A positioning pin (5) is provided on the radial outer side of the flange (4). One end of the positioning pin (5) is inserted into the pin hole of the flange (4), and the other end is inserted into the pin hole of the vacuum roller body (1).

4. The vacuum roller edge anti-fall-off device according to claim 2, characterized in that: A bearing 1 (9) is provided at the connection between the shaft (8) and the flange (4). The inner ring of the bearing 1 (9) is interference-fitted with the shaft (8), and the outer ring of the bearing 1 (9) is interference-fitted with the inner hole of the flange (4). A bearing 2 (11) is provided at the other end of the shaft (8). The inner ring of the bearing 2 (11) is interference-fitted with the shaft (8).

5. The vacuum roller edge anti-fall-off device according to claim 4, characterized in that: A washer (12) is provided on the outer side of the bearing two (11). One side of the washer (12) is in contact with the outer ring end face of the bearing two (11), and a sealing end cap (14) is provided on the other side. The sealing end cap (14) is fixedly connected to the vacuum roller body (1) by fasteners (13) evenly distributed around the circumference.

6. The vacuum roller edge anti-fall-off device according to claim 5, characterized in that: A sealing element (15) is provided between the inner hole of the sealing end cover (14) and the shaft (8). The inner ring of the sealing element (15) is slidably fitted with the shaft (8), and the outer ring of the sealing element (15) is interference-fitted with the inner hole of the sealing end cover (14). An adjustment device (16) is provided on the outer side of the sealing end cover (14).

7. The vacuum roller edge anti-fall-off device according to claim 6, characterized in that: The adjusting device (16) is fixedly connected to the sealing end cover (14) by fasteners (17). The adjusting device (16) includes an adjusting bolt and an adjusting nut. One end of the adjusting bolt is threaded to the sealing end cover (14), and the other end extends to the outside of the adjusting device (16) and cooperates with the adjusting nut.

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