High-stability sealing roller for metal rolling
By employing a multi-layer sealing structure and a spring-driven automatic adjustment of the sealing gap, the leakage problem of traditional roll seals under harsh working conditions has been solved, achieving high stability and high precision in the rolling of thin metal sheets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU CHUANGHONG MACHINERY CO LTD
- Filing Date
- 2025-03-18
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional roll sealing methods are prone to failure under high-speed rotation, high temperature and high pressure, leading to lubricating oil leakage and the entry of external impurities, which affects the stability of the roll and the precision of metal rolling.
It adopts a multi-layer sealing structure, including roller neck, sealing ring, sealing sleeve, spring and static ring, etc. The sealing gap is automatically adjusted by the spring to ensure the sealing surface fits, and the multi-layer sealing ring prevents the leakage of the medium.
It improves the stability and sealing performance of the rolls, ensuring the stability of the rolling process and the product quality of high-precision metal sheets.
Smart Images
Figure CN224208789U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of sealed roll technology, and more specifically to a highly stable sealed roll for metal rolling. Background Technology
[0002] With the rapid development of modern industry, the demand for metal products is increasing, and the requirements for their quality and precision are also becoming more stringent. Metal rolling, as a crucial process for producing metal sheets, pipes, and profiles, occupies a vital position in industries such as steel and non-ferrous metals. To improve production efficiency and reduce costs, the metal rolling industry is continuously developing towards higher speeds, larger scales, and greater automation. This places higher demands on the key components of rolling equipment—the rolls—especially in terms of sealing performance and stability.
[0003] During metal rolling, rolls need to operate under high-speed rotation, high temperature, high pressure, and harsh working conditions. Traditional roll sealing methods, such as packing seals and lip seals, often struggle to maintain good sealing performance under such complex conditions, easily leading to seal failure. This results in lubricating oil leakage and the entry of external impurities into the roll, affecting its normal operation and service life.
[0004] Traditional rolling mill roll sealing structures lack stability when exposed to vibrations and impacts during the rolling process, making them prone to wear and deformation of the sealing components. This not only leads to decreased sealing performance but also causes instability in the roll's operation, consequently affecting the precision of metal rolling and product quality, such as causing uneven sheet thickness and surface defects. Utility Model Content
[0005] The purpose of this invention is to provide a highly stable sealing roll for metal rolling, which significantly improves the sealing performance of the sealing roll by installing the roll shaft and the roll cylinder, thereby solving the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] High-stability sealed rolls for metal rolling, including
[0008] A roller shaft on which a roller is mounted;
[0009] The roller shaft includes a central shaft with roller necks symmetrically arranged at both ends. A first sealing ring is connected to the roller neck. A sealing plate is provided in the fixing groove at the bottom of the first sealing ring. A sealing sleeve is installed at the upper end of the first sealing ring, and a second sealing ring is provided on the inner side of the sealing sleeve.
[0010] As a further technical solution of this utility model, the upper end of the sealing sleeve is provided with a connecting ring, and multiple springs are installed on the connecting ring, with the upper end of the springs connected to the top ring.
[0011] As a further technical solution of this utility model, the top ring is connected to the connecting ring by multiple clamping nuts, and the side surface of the top ring is also provided with multiple limiting nuts. The roller neck is connected and fixed by multiple limiting nuts, and the end of the roller neck is provided with a fixing nut.
[0012] As a further technical solution of this utility model, a static ring is rotatably connected to the bottom of the first sealing ring and the sealing sheet, and the static ring is fixed to the central shaft by a fixing bolt.
[0013] As a further technical solution of this utility model, the static ring is provided at one end of the baffle, the baffle is provided at both ends of the outer cylinder and is sealed and connected, the inner side of the outer cylinder is also symmetrically provided with inner sealing rings, and the inner sealing ring is located at the other end of the baffle. The other end of the inner sealing ring is equipped with an inner connecting ring, which is also connected to the inner side of the outer cylinder. The baffle, the inner sealing ring and the inner connecting ring are all connected to the central shaft.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In use, the roller necks at both ends are first installed on the installation station. A connecting ring and a top ring are installed on the roller neck. A spring is provided between the connecting ring and the top ring. When the sealing gap between the sealing surfaces of the connecting ring and the top ring changes due to wear, shaft movement, thermal expansion, etc., the spring will automatically extend and retract according to the force, pushing the top ring to move along the roller neck, so that the sealing surfaces always maintain a good fit, compensate for the change in sealing gap, maintain sealing performance, and improve the stability of the roll.
[0016] This invention features a sealing sheet between the sealing ring and the static ring, a sealing ring between the sealing sleeve and the connecting ring, and a static ring and baffle tightly connected to the central shaft. The central shaft also contains an inner sealing ring and an inner connecting ring. This multi-layered sealing effectively prevents leakage of liquids, gases, and other media. For high-stability sealing rolls, especially in rolling processes with extremely high sealing requirements and where no leakage is permissible, such as high-precision metal sheet rolling, multi-layered sealing can effectively meet sealing needs, ensuring the stability of the rolling process and product quality. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0018] Figure 2 This utility model Figure 1 A bottom view.
[0019] Figure 3 This utility model Figure 1 Front view.
[0020] Figure 4 This utility model Figure 3 AA sectional view.
[0021] Figure 5 This utility model Figure 4 A magnified view of a portion of the image.
[0022] Figure 6 This utility model Figure 2 Enlarged schematic diagram of a part
[0023] In the diagram: 1-roller shaft, 2-roller cylinder;
[0024] 11-Roll neck, 12-First sealing ring, 13-Sealing plate, 14-Sealing sleeve, 15-Second sealing ring, 16-Connecting ring, 17-Spring, 18-Top ring, 19-Limit nut, 110-Clamping nut, 111-Central shaft, 112-Fixing nut;
[0025] 21-Outer cylinder, 22-Baffle, 23-Fixing bolt, 24-Inner sealing ring, 25-Inner connecting ring, 26-Static ring. Detailed Implementation
[0026] 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.
[0027] Please see Figure 1-5 In this embodiment of the present invention, a high-stability sealed roll for metal rolling includes a roll shaft 1 on which a roll 2 is mounted;
[0028] The roller 1 includes a central shaft 111, with roller necks 11 symmetrically arranged at both ends of the central shaft 111. A first sealing ring 12 is connected to the roller neck 11. A sealing sheet 13 is provided in the fixing groove at the bottom of the first sealing ring 12. A sealing sleeve 14 is installed at the upper end of the first sealing ring 12. A second sealing ring 15 is provided on the inner side of the sealing sleeve 14.
[0029] The upper end of the sealing sleeve 14 is provided with a connecting ring 16, and a plurality of springs 17 are installed on the connecting ring 16. The upper end of the springs 17 is connected to the top ring 18.
[0030] The top ring 18 is connected to the connecting ring 16 by multiple clamping nuts 110, and the side surface of the top ring 18 is also provided with multiple limiting nuts 19. The roller neck 11 is connected and fixed by multiple limiting nuts 19, and the end of the roller neck 11 is provided with a fixing nut 112.
[0031] By adopting the above technical solution, during use, the roll necks 11 at both ends are first installed on the installation station. A connecting ring 16 and a top ring 18 are installed on the roll neck 11. A spring 17 is provided between the connecting ring 16 and the top ring 18. When the sealing gap between the sealing surfaces of the connecting ring 16 and the top ring 18 changes due to wear, shaft movement, thermal expansion, etc., the spring 17 will automatically extend and retract according to the force, pushing the top ring 18 to move along the roll neck 11, so that the sealing surfaces always maintain a good fit, compensate for the change in the sealing gap, maintain the sealing performance, and improve the stability of the roll.
[0032] In this embodiment, the top ring 18 is connected to the connecting ring 16 by a plurality of clamping nuts 110, and the side surface of the top ring 18 is also provided with a plurality of limiting nuts 19, which are used to connect and fix the roller neck 11. The end of the roller neck 11 is provided with a fixing nut 112.
[0033] The bottom of the first sealing ring 12 and the sealing sheet 13 are rotatably connected to a static ring 26, which is fixed to the central shaft 111 by a fixing bolt 23.
[0034] By adopting the above technical solution, a sealing sheet 13 is provided between the first sealing ring 12 and the static ring 26, and a second sealing ring 15 is provided between the sealing sleeve 14 and the connecting ring 16. The static ring 26 and the baffle 22 are tightly connected to the central shaft 111. The central shaft 111 is also connected with an inner sealing ring 24 and an inner connecting ring 25. The multi-layer seal can effectively block the leakage of liquid, gas and other media. For high-stability sealing rolls, especially in some rolling processes with extremely high sealing requirements and no leakage allowed, such as high-precision metal sheet rolling, the multi-layer seal can well meet the sealing requirements and ensure the stability of the rolling process and product quality.
[0035] The working principle of this utility model is as follows: When in use, the roller necks 11 at both ends are first installed on the installation position. A connecting ring 16 and a top ring 18 are installed on the roller neck 11. A spring 17 is provided between the connecting ring 16 and the top ring 18. When the sealing gap between the sealing surfaces of the connecting ring 16 and the top ring 18 changes due to wear, shaft movement, thermal expansion, etc., the spring 17 will automatically extend and retract according to the force, pushing the top ring 18 to move along the roller neck 11, so that the sealing surfaces always maintain a good fit, compensate for the change in the sealing gap, maintain the sealing performance, and improve the stability of the roll.
[0036] A sealing sheet 13 is provided between the first sealing ring 12 and the static ring 26, and a second sealing ring 15 is provided between the sealing sleeve 14 and the connecting ring 16. The static ring 26 and the baffle 22 are tightly connected to the central shaft 111. The central shaft 111 is also connected to an inner sealing ring 24 and an inner connecting ring 25. The multi-layer seal can effectively prevent the leakage of liquid, gas and other media. For high-stability sealing rolls, especially in some rolling processes with extremely high sealing requirements and no leakage allowed, such as high-precision metal sheet rolling, the multi-layer seal can well meet the sealing requirements and ensure the stability of the rolling process and product quality.
[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A high-stability sealed roll for metal rolling, characterized in that: include Roller (1), on which a roller (2) is mounted; The roller (1) includes a central shaft (111), with roller necks (11) symmetrically arranged at both ends of the central shaft (111). A first sealing ring (12) is connected to the roller neck (11), and a sealing plate (13) is provided in the fixing groove at the bottom of the first sealing ring (12). A sealing sleeve (14) is installed at the upper end of the first sealing ring (12), and a second sealing ring (15) is provided on the inner side of the sealing sleeve (14).
2. The high-stability sealed roll for metal rolling according to claim 1, characterized in that: The upper end of the sealing sleeve (14) is provided with a connecting ring (16), and multiple springs (17) are installed on the connecting ring (16). The upper end of the springs (17) is connected to the top ring (18).
3. The high-stability sealed roll for metal rolling according to claim 2, characterized in that: The top ring (18) is connected to the connecting ring (16) by multiple clamping nuts (110), and the side surface of the top ring (18) is also provided with multiple limiting nuts (19). The roller neck (11) is connected and fixed by multiple limiting nuts (19), and the end of the roller neck (11) is provided with a fixing nut (112).
4. The high-stability sealed roll for metal rolling according to claim 3, characterized in that: The bottom of the first sealing ring (12) and the sealing sheet (13) are rotatably connected to a static ring (26), which is fixed to the central shaft (111) by a fixing bolt (23).
5. The high-stability sealed roll for metal rolling according to claim 4, characterized in that: The static ring (26) is located at one end of the baffle (22), the baffle (22) is located at both ends of the outer cylinder (21) and is sealed together. The inner side of the outer cylinder (21) is also symmetrically provided with an inner sealing ring (24), and the inner sealing ring (24) is located at the other end of the baffle (22). The other end of the inner sealing ring (24) is equipped with an inner connecting ring (25), which is also connected to the inner side of the outer cylinder (21). The baffle (22), the inner sealing ring (24) and the inner connecting ring (25) are all connected to the central shaft (111).