Long-acting lubricating mechanism for rewinding follow-up roller

Abstract

The utility model discloses a rewinding follow-up roller long-acting lubricating mechanism which comprises a follow-up roller, end shafts at the two ends of the follow-up roller are arranged on a lubricating assembly, the lubricating assembly comprises a lubricating body, an oil cavity is formed in one end of the lubricating body, an oil injection hole communicated with the oil cavity is formed in the side wall of the upper portion of the lubricating body, and a bearing is arranged in a cavity body of the oil cavity in a sleeved mode. An end shaft of the follow-up roller is fixed to a bearing inner ring, a sealing cover is arranged on the portion, located on one side of the oil cavity, of the lubricating body through bolt connection, and a sealing ring is arranged between the sealing cover and the lubricating body. The long-acting lubricating mechanism for the rewinding follow-up roller stores lubricating oil through the oil cavity, is matched with the oil injection hole to conveniently supplement oil, and is combined with the sealing cover and the sealing ring to form a reliable sealing structure, so that the leakage of the lubricating oil can be effectively reduced, the lubricating period is prolonged, and the maintenance frequency is reduced; meanwhile, the stable assembly structure of the bearing and the end shaft can improve the running stability and prolong the service life of the follow-up roller.

Description

Technical Field

[0001] This utility model belongs to the technical field of follower roller installation structure, and in particular relates to a long-term lubrication mechanism for rewinding follower rollers. Background Technology

[0002] During the rewinding process of a slitting machine, the rewinding follower roller is a key component to ensure the smooth rewinding of film materials. Its rotational flexibility directly affects the rewinding quality and production efficiency of film materials. Currently, most existing slitting machines use a structure in which the rewinding follower roller is directly installed on the main body of the equipment through a bearing seat. Since the bearing seat is directly exposed to the external environment and lacks an effective sealing and lubrication guarantee mechanism, the bearing is in a semi-open state for a long time.

[0003] This installation method has significant drawbacks: Firstly, the exposed bearing housing makes the lubricating oil susceptible to contamination from dust and moisture in the environment. Simultaneously, the lubricating oil evaporates and leaks rapidly, requiring frequent and regular lubrication to maintain normal bearing operation. This not only increases workload but may also lead to untimely lubrication replenishment due to improper maintenance cycle control or oversight. Secondly, when the lubricating oil is insufficient, the bearing rotation resistance increases sharply, resulting in poor rotational performance. This, in turn, reduces the rotational effect of the rewinding follower roller, making it unable to synchronize with the rewinding speed of the film material. This can easily cause problems such as tearing, wrinkling, or even breakage in the film material produced by the slitting machine, seriously affecting product quality and production continuity. Therefore, industry professionals have designed a long-term lubrication mechanism for the rewinding follower roller. Utility Model Content

[0004] The purpose of this utility model is to provide a long-lasting lubrication mechanism for the rewinding follower roller, which addresses the problems of exposed bearing housings in existing slitting machines, leading to easy contamination of lubricating oil, rapid evaporation and leakage requiring frequent replenishment, and poor roller rotation due to insufficient lubrication.

[0005] The present invention achieves the above objectives through the following technical solution: a long-term lubrication mechanism for a rewinding follower roller, comprising a follower roller, wherein the end shafts at both ends of the follower roller are disposed on a lubrication assembly;

[0006] The lubrication assembly includes a lubrication body, an oil cavity at one end of the lubrication body, an oil injection hole communicating with the oil cavity on the upper side wall of the lubrication body, a bearing sleeved inside the oil cavity, the end shaft of the follower roller fixed to the inner ring of the bearing, and a sealing cover bolted to the lubrication body located on one side of the oil cavity, with a sealing ring between the sealing cover and the lubrication body.

[0007] Furthermore, a key connection structure is provided between the end shaft of the follower roller and the inner ring of the bearing. The key connection structure includes a keyway formed on the outer wall of the end shaft and a flat key adapted to be embedded in the keyway. A keyway adapted to the flat key is formed on the inner ring of the bearing.

[0008] Furthermore, a number of bolt holes are evenly distributed along the circumferential direction on one side wall of the lubrication body.

[0009] Furthermore, a removable sealing plug is provided inside the oil injection hole. The sealing plug is made of rubber and has a protrusion at its end.

[0010] Furthermore, the inner wall of the oil injection hole is provided with a limiting platform that abuts against the bearing, and a groove is provided on the other side of the bearing relative to the limiting platform, and a retaining ring that abuts against the bearing is provided in the groove.

[0011] Furthermore, the sealing cap is provided with a countersunk hole to accommodate the end of a bolt.

[0012] Beneficial effects: This utility model has a reasonable design, simple and stable structure, and strong practicality, and has the following beneficial effects:

[0013] 1. Improve sealing performance and reduce lubricating oil consumption: The sealing ring between the sealing cover and the lubrication body, as well as the rubber sealing plug in the oil injection hole, can effectively prevent the lubricating oil in the oil cavity from being contaminated by external dust and water vapor, while reducing the evaporation and leakage of lubricating oil and extending the effective working time of lubricating oil.

[0014] 2. Ensure stable bearing operation and improve follower roller rotation effect: The oil chamber provides a continuous lubrication environment for the bearing. Combined with the limit table and retaining ring to fix the bearing, it can ensure that the bearing is always in a good lubrication state, reduce bearing rotation resistance, ensure flexible rotation of the follower roller, and avoid film material pulling problems caused by poor bearing rotation.

[0015] 3. Enhance connection reliability and improve structural stability: The key connection structure between the follower roller end shaft and the bearing inner ring, as well as the evenly distributed threaded holes on the lubrication body and the countersunk hole design on the sealing cover, can enhance the connection between the components, reduce loosening during operation, and improve the structural stability of the entire lubrication mechanism.

[0016] 4. Facilitates lubrication replenishment and maintenance: The oil filling hole facilitates the regular replenishment of lubricating oil to the oil chamber, and the protrusion at the end of the sealing plug facilitates disassembly. At the same time, the bearing is fixed by the limiting platform and the retaining ring, and the sealing cover is connected by bolts, making the installation, disassembly and maintenance of the bearing and the entire lubrication mechanism more convenient. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the present invention;

[0018] Figure 2 This is a partial cross-sectional structural diagram of the present invention.

[0019] In the diagram: 1-Follower roller, 2-Lubrication assembly;

[0020] 201-Lubrication body, 202-Oil cavity, 203-Oil injection hole, 204-Bearing, 205-Sealing cover, 206-Sealing ring, 207-Bolt hole, 208-Sealing plug, 209-Limiting platform, 2010-Snap ring, 2011-Counterhole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1:

[0023] Combination Figure 1-2 The rewinding follower roller long-term lubrication mechanism shown includes a follower roller 1 for assisting in the rewinding operation of film material, which is mounted on a lubrication assembly 2 by means of end shafts at both ends, and continuous lubrication is achieved during the rotation process by means of the lubrication assembly 2.

[0024] The core supporting component of the lubrication assembly 2 is the lubrication body 201. One end of the lubrication body 201 is recessed inward to form an oil cavity 202 for storing lubricating oil. The cavity space of the oil cavity 202 is adapted to the shape of the bearing 204, providing a closed lubrication environment for the bearing 204. To facilitate convenient replenishment of lubricating oil, an oil injection hole 203 is provided through the upper side wall of the lubrication body 201, communicating with the interior of the oil cavity 202. The diameter of the oil injection hole 203 meets the insertion requirements of conventional oil injection tools. Lubricating oil can be directly injected into the oil cavity 202 through this oil injection hole 203, ensuring that the oil cavity 202 always maintains sufficient lubricating medium. A bearing 204 is tightly fitted inside the oil cavity 202, and the outer ring of the bearing 204 fits against the inner wall of the oil cavity 202. The end shaft of the follower roller 1 is fixed to the inner ring of the bearing 204 by interference fit. This assembly method allows the follower roller 1 to significantly reduce rotational resistance through the rolling friction of the bearing 204 when rotating, while the lubricating oil in the oil cavity 202 can directly act on the bearing. The rolling elements and raceways of 204 form a continuous lubricating film, reducing wear. On the lubrication body 201 located on one side of the opening of the oil cavity 202, a sealing cover 205 is connected by circumferentially distributed bolts. The cover size of the sealing cover 205 is larger than the opening of the oil cavity 202. After the bolts are tightened, the oil cavity 202 can be sealed to prevent lubricating oil leakage and external impurities from entering. To further improve the sealing performance, a sealing ring 206 is provided between the contact surface of the sealing cover 205 and the lubrication body 201. The sealing ring 206 undergoes elastic deformation under the preload of the bolts, tightly filling the gap between the two to form a double sealing structure. Combined with the closed space of the oil cavity 202, it achieves long-term retention of lubricating oil and ensures long-term stable operation of the follower roller 1.

[0025] In this embodiment, a keyed connection structure is provided between the end shaft of the follower roller 1 and the inner ring of the bearing 204. This structure achieves synchronous rotation transmission between the two through mechanical engagement. Specifically, a keyway parallel to the axis of the end shaft is formed on the outer wall of the end shaft of the follower roller 1. The cross-section of the keyway is rectangular, and a flat key is fitted into this keyway. At the same time, a keyway fitted to the flat key is also formed on the inner wall of the inner ring of the bearing 204, corresponding to the keyway of the end shaft of the follower roller 1. When the end shaft of the follower roller 1 is installed into the inner ring of the bearing 204, part of the flat key is embedded in the keyway of the end shaft, and the other part is embedded in the keyway of the inner ring of the bearing 204. This ensures that the inner ring of the bearing 204 can rotate synchronously when the follower roller 1 rotates, avoiding wear caused by relative sliding, and improving the stability and reliability of power transmission.

[0026] In this embodiment, a plurality of bolt holes 207 are evenly distributed along the circumferential direction on one side wall of the lubrication body 201, which facilitates the subsequent fixing of the lubrication body 201 to the body of the slitting machine, so as to achieve a reliable connection and ensure stable operation in the future.

[0027] In this embodiment, a removable sealing plug 208 is provided inside the oil filling hole 203. The sealing plug 208 is cylindrical in shape, and its outer diameter is adapted to the inner diameter of the oil filling hole 203, so that it can be tightly embedded in the oil filling hole 203. The sealing plug 208 is made of rubber material. Rubber has good elasticity and sealing performance. When the sealing plug 208 is inserted into the oil filling hole 203, it will fit tightly against the inner wall of the oil filling hole 203 under its own elasticity, thereby blocking the passage between the oil filling hole 203 and the outside world, preventing the lubricating oil in the oil cavity 202 from being affected by external dust, water vapor and other impurities. In addition, the end of the sealing plug 208 is provided with a protrusion. The operator can easily pull the sealing plug 208 out of the oil filling hole 203 by pinching the protrusion.

[0028] In this embodiment, the inner wall of the oil injection hole 203 is provided with a limiting platform 209 that abuts against the bearing 204. The limiting platform 209 is an annular protrusion structure formed by extending the inner wall of the oil injection hole 203 towards the central axis. Its end face is tightly fitted with one end face of the bearing 204. During the installation of the bearing 204, when the bearing 204 is inserted into the oil cavity 202 from one side of the oil injection hole 203, the limiting platform 209 will axially limit the bearing 204, preventing the bearing 204 from moving excessively towards the oil injection hole 203, ensuring that the bearing 204 is in the preset installation position in the oil cavity 202. On the other side of the bearing 204 opposite to the limiting platform 209, an annular groove is formed on the inner wall of the oil cavity 202. A retaining ring 2010 that abuts against the bearing 204 is provided in the groove. One end face of the retaining ring 2010 will tightly abut against the other end face of the bearing 204, thereby forming a retaining platform 209. The bidirectional axial limiting mechanism, through the combined action of the limiting platform 209 and the retaining ring 2010, firmly restricts the bearing 204 to a fixed position within the oil cavity 202, preventing the bearing 204 from shifting due to axial force during the rotation of the follower roller 1, thereby ensuring the smooth rotation of the follower roller 1. At the same time, the detachable design of the retaining ring 2010 also facilitates the subsequent maintenance and replacement of the bearing 204. Simply removing the retaining ring 2010 from the groove can release the limiting effect on the bearing 204, making it easy to disassemble the bearing 204.

[0029] In this embodiment, the sealing cover 205 is provided with a countersunk hole 2011 to accommodate the bolt end. During the process of connecting the sealing cover 20 to the lubrication body 201 by bolts, when the bolt passes through the countersunk hole 2011 and is screwed into the threaded hole of the lubrication body 201, the bolt end will be completely embedded in the large diameter section of the countersunk hole 2011 and will not protrude from the outer surface of the sealing cover 205. This fit can avoid the problem of bumping and scratching caused by the bolt end being exposed.

[0030] 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.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style 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 long-term lubrication mechanism for a rewinding follower roller, comprising a follower roller (1), characterized in that: The end shafts at both ends of the follower roller (1) are mounted on the lubrication assembly (2); The lubrication assembly (2) includes a lubrication body (201), an oil cavity (202) is provided at one end of the lubrication body (201), an oil injection hole (203) communicating with the oil cavity (202) is provided on the upper side wall of the lubrication body (201), a bearing (204) is sleeved in the oil cavity (202), the end shaft of the follower roller (1) is fixed on the inner ring of the bearing (204), and a sealing cover (205) is provided on the lubrication body (201) located on one side of the oil cavity (202) by bolt connection, and a sealing ring (206) is provided between the sealing cover (205) and the lubrication body (201).

2. The long-term lubrication mechanism for a rewinding follower roller according to claim 1, characterized in that: A key connection structure is provided between the end shaft of the follower roller (1) and the inner ring of the bearing (204). The key connection structure includes a keyway opened on the outer wall of the end shaft and a flat key adapted to be embedded in the keyway. A keyway adapted to the flat key is opened on the inner ring of the bearing (204).

3. The long-term lubrication mechanism for a rewinding follower roller according to claim 2, characterized in that: The lubrication body (201) has several bolt holes (207) evenly distributed along the circumferential direction on one side wall.

4. The long-term lubrication mechanism for a rewinding follower roller according to claim 3, characterized in that: The oil injection hole (203) is provided with a removable sealing plug (208), which is made of rubber and has a protrusion at the end.

5. The long-term lubrication mechanism for a rewinding follower roller according to claim 4, characterized in that: The inner wall of the oil injection hole (203) is provided with a limiting platform (209) that abuts against the bearing (204). A groove is provided on the other side of the bearing (204) relative to the limiting platform (209), and a retaining ring (2010) that abuts against the bearing (204) is provided in the groove.

6. The long-term lubrication mechanism for a rewinding follower roller according to claim 5, characterized in that: The sealing cap (205) is provided with a countersunk hole (2011) for accommodating the end of a bolt.

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