A sealed roller with automatic compensation of bearing preload for play

Abstract

The utility model is suitable for mechanical transmission field, provide a kind of automatic elimination play compensation bearing preload's roll seal roller, it includes: roll seal roller, is rotatably installed on roll seal axle by two double row angular contact bearings;Play elimination compensation pad is installed in roll seal axle shaft end by fixed bolt, and extrusion contact with double row angular contact bearing inner ring.The utility model realizes the automatic elimination of the gap between two double row angular contact bearings and baffle ring by the elasticity of play elimination compensation pad, effectively inhibits the radial runout of roll seal roller, guarantees the dimensional accuracy and sealing quality of roll seal, it can also play the buffering effect when being subjected to impact load, thereby reducing bearing wear, prolonging service life, improving equipment reliability and stability comprehensively, and reducing maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical transmission, and in particular relates to a sealing roller that automatically eliminates backlash and compensates for bearing preload. Background Technology

[0002] Roller sealing rollers, also known as sealing wheels, rollers, or rolls (derived from the English word ROLL), are key non-standard spare parts on can sealing machines. They use rolling to tightly hook the flange of the can body and the can lid together, forming a reliable sealing structure. The performance of the roller sealing rollers directly determines the sealing quality and production efficiency.

[0003] During the operation of the sealing equipment, the sealing roller, as a key component that directly contacts the can, has its internal angular contact ball bearings that significantly affect the final sealing effect of the can and lid. Traditional assembly methods have significant drawbacks: the balls of the angular contact ball bearings wear down during long-term high-speed operation, causing gaps in the inner rings, resulting in radial and axial play, which leads to radial runout of the rollers and causes problems such as poor container sealing and uneven edge rolling. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a sealing roller that automatically eliminates backlash and compensates for bearing preload. The sealing roller is mounted on a sealing shaft via two internally configured double-row angular contact bearings, and a backlash compensation pad is added to the lower double-row angular contact bearing. After assembly, the fixing bolts are tightened to a certain force, keeping the backlash compensation pad in a compressed state. The backlash compensation pad continuously compresses the inner ring of the double-row angular contact bearing, enabling the lower double-row angular contact bearing to obtain effective thrust, thereby compensating for and eliminating the gap between the inner rings of the two double-row angular contact bearings. During long-term operation of the equipment, when new gaps are generated due to wear, the backlash compensation pad can automatically push the double-row angular contact bearing upward, thereby automatically eliminating backlash. This aims to solve the problems mentioned in the background art, where the balls of angular contact ball bearings wear during long-term high-speed operation, resulting in gaps in their inner rings, radial and axial backlash, causing radial runout of the roller, and leading to problems such as poor container sealing and uneven edge rolling.

[0005] This utility model embodiment is implemented as follows: a sealing roller for automatically eliminating clearance and compensating for bearing preload includes:

[0006] The sealing rollers are rotatably mounted on the sealing shaft via two double-row angular contact bearings.

[0007] The backlash compensation pad is installed on the end of the sealing shaft by fixing bolts and makes contact with the inner ring of the double-row angular contact bearing.

[0008] As a further embodiment of this utility model: the two double-row angular contact bearings are installed back to back.

[0009] As a further embodiment of this utility model, it also includes a protective seat, which is fixedly installed on the sealing shaft and wraps around one end of the sealing roller.

[0010] As a further embodiment of this utility model, a retaining ring is fixedly installed in the gap between the inner side of the protective seat and the inner ring of the adjacent double-row angular contact bearing.

[0011] As a further embodiment of this utility model: the gap-eliminating compensation pad is configured as a butterfly-shaped structure and is made of a metal material with high elastic recovery performance.

[0012] The present invention provides an automatic clearance elimination and bearing preload compensation sealing roller, the core improvement of which is that by utilizing the elasticity of the clearance compensation pad, the clearance between the two double-row angular contact bearings and the retaining ring is automatically eliminated, effectively suppressing the radial runout of the sealing roller, ensuring the dimensional accuracy and sealing quality of the sealing, and also playing a buffering role when subjected to impact loads, thereby reducing bearing wear, extending service life, comprehensively improving equipment reliability and stability, and reducing maintenance costs. Attached Figure Description

[0013] Figure 1 A cross-sectional view of a sealing roller for automatically eliminating clearance and compensating for bearing preload, provided for an embodiment of this utility model;

[0014] Figure 2 A front view of a roll-sealing roller backlash compensation pad for automatically eliminating backlash and compensating for bearing preload, provided for an embodiment of this utility model;

[0015] Figure 3 This is a three-dimensional cross-sectional view of a roll-sealed roller backlash compensation pad for automatically eliminating backlash and compensating for bearing preload, provided as an embodiment of the present utility model.

[0016] In the attached diagram: 1. Sealing roller, 2. Double-row angular contact bearing, 3. Sealing shaft, 4. Retaining ring, 5. Protective seat, 6. Clearance compensation pad, 7. Fixing bolt. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0019] Please see Figures 1 to 3This utility model provides a sealing roller for automatically eliminating clearance and compensating for bearing preload. The sealing roller includes:

[0020] The sealing roller 1 is rotatably mounted on the sealing shaft 3 via two double-row angular contact bearings 2;

[0021] The gap-reducing pad 6 is installed on the end of the sealing shaft 3 by fixing bolts 7, and makes extrusion contact with the inner ring of the double-row angular contact bearing 2.

[0022] In practical application, the sealing roller 1 is mounted on the sealing shaft 3 via two internally installed double-row angular contact bearings 2, and a backlash compensation pad 6 is added to the lower double-row angular contact bearing 2. After assembly, the fixing bolts 7 are tightened to a certain force, keeping the backlash compensation pad 6 in a compressed state. The backlash compensation pad 6 continuously compresses the inner ring of the double-row angular contact bearing 2, enabling the lower double-row angular contact bearing 2 to obtain effective thrust, thereby compensating for and eliminating the gap between the inner rings of the two double-row angular contact bearings 2. During long-term operation of the equipment, when new gaps are generated due to wear, the backlash compensation pad 6 can automatically push the double-row angular contact bearing 2 upward, thereby automatically eliminating the backlash.

[0023] This embodiment utilizes the elasticity of the gap-eliminating compensation pad 6 to automatically eliminate the gap between the two double-row angular contact bearings 2 and the retaining ring 4, effectively suppressing the radial runout of the sealing roller 1, ensuring the dimensional accuracy and sealing quality of the sealing, and also acting as a buffer when subjected to impact loads, thereby reducing bearing wear, extending service life, comprehensively improving equipment reliability and stability, and reducing maintenance costs.

[0024] Please see Figure 1 In a preferred embodiment of this utility model, the two double-row angular contact bearings 2 are installed back to back.

[0025] In practical applications, this embodiment uses two double-row angular contact bearings 2 installed back-to-back. The load centers of the two double-row angular contact bearings 2 are far apart, forming a stable support span. This effectively resists radial and axial loads as well as overturning moments, and has outstanding resistance to deformation and overturning. It can also withstand axial loads from two directions. Furthermore, when the shaft expands and elongates due to increased operating temperature, this installation method increases the bearing clearance, thus reserving space for thermal expansion and avoiding the risk of bearing seizure due to compression.

[0026] Please see Figure 1 As another preferred embodiment of the present invention, it also includes a protective seat 5, which is fixedly installed on the sealing shaft 3 and wraps around one end of the sealing roller 1.

[0027] Furthermore, a retaining ring 4 is fixedly installed in the gap between the inner side of the protective seat 5 and the inner ring of the adjacent double-row angular contact bearing 2.

[0028] In practical application, the protective seat 5 wraps around one end of the sealing roller 1, thus protecting the end of the sealing roller 1 and the double-row angular contact bearing 2 from dust. The retaining ring 4, in conjunction with the gap-reducing compensation pad 6, compresses and limits the two double-row angular contact bearings 2, thereby achieving the positioning function of the sealing roller 1 and ensuring the normal operation of the equipment.

[0029] Please see Figures 1 to 3 In another preferred embodiment of this utility model, the gap-eliminating compensation pad 6 is configured as a butterfly structure and is made of a metal material with high elastic recovery performance.

[0030] In practical applications, this embodiment uses a butterfly spring as the backlash compensation pad 6. This butterfly spring can withstand axial static or dynamic loads at the upper inner and lower outer edges. Upon compression, it deforms until flattened, storing energy as a live load. When needed, it automatically converts into the additional compressive load required for compensation. During use, it continuously compresses the double-row angular contact bearing 2 to compensate for the gap between the two bearings.

[0031] In one embodiment, the thickness of the backlash compensation pad 6 is matched according to the specifications of the sealing roller 1, the model of the double-row angular contact bearing 2, and the actual installation conditions to ensure that the sealing roller 1 can rotate smoothly after assembly.

[0032] 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.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] 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 sealing roller for automatically eliminating clearance and compensating for bearing preload, characterized in that: include: The sealing roller (1) is rotatably mounted on the sealing shaft (3) via two double-row angular contact bearings (2); The gap-reducing pad (6) is installed on the end of the sealing shaft (3) by fixing bolts (7) and is in contact with the inner ring of the double-row angular contact bearing (2).

2. The sealing roller for automatically eliminating clearance and compensating for bearing preload according to claim 1, characterized in that: The two double-row angular contact bearings (2) are installed back to back.

3. The sealing roller for automatically eliminating clearance and compensating for bearing preload according to claim 2, characterized in that: It also includes a protective seat (5), which is fixedly installed on the sealing shaft (3) and wraps around one end of the sealing roller (1).

4. A sealing roller for automatically eliminating clearance and compensating for bearing preload according to claim 3, characterized in that: A retaining ring (4) is fixedly installed in the gap between the inner side of the protective seat (5) and the inner ring of the adjacent double-row angular contact bearing (2).

5. A sealing roller for automatically eliminating clearance and compensating for bearing preload according to claim 1, characterized in that: The gap-reducing compensation pad (6) is configured as a butterfly structure and is made of a metal material with high elastic recovery performance.

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