Bearing accurate grinding wheel spindle oil seal sealing structure

Abstract

The utility model discloses an oil seal sealing structure of a bearing fine grinding wheel spindle, which relates to the field of bearing processing equipment, and is characterized by comprising an oil seal main body and two sealing lips adhered on the inner side wall of the oil seal main body, and the tails of the two sealing lips are connected, so that double-layer sealing is realized. A cavity for containing lubricating oil is formed in the middle, so that the two sealing lips are in close contact with the surface of a grinding wheel shaft, namely, two sealing defense lines are arranged between the shaft and the outside, a more reliable sealing guarantee is provided for the interior of equipment, and the lubricating oil can be effectively prevented from leaking from a gap between the shaft and the oil seal main body; meanwhile, the cavity in the middle of the two sealing lips can serve as a storage space and is used for containing lubricating oil, in the operation process of equipment, the lubricating oil plays a key role in reducing friction and abrasion between a rotating shaft and the oil seal and other components, a good lubricating state is maintained, and therefore the service life of the oil seal and the related components is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing processing equipment, and more specifically, it relates to a bearing precision grinding wheel shaft oil seal sealing structure. Background Technology

[0002] In the bearing manufacturing process, the precision grinding process is crucial for ensuring the bearing's accuracy and surface quality. During precision grinding, the grinding wheel shaft, as a key component driving the grinding wheel's rotation, directly affects the operational stability of the entire precision grinding equipment and the bearing's machining quality through its sealing performance.

[0003] Currently, existing oil seal structures for precision grinding wheel shafts have some shortcomings. Firstly, the sealing effect of traditional oil seals is not ideal. During high-speed rotation of the grinding wheel shaft, the relative movement between the shaft and the oil seal easily leads to lubricant leakage. This not only wastes lubricant but may also pollute the processing environment and affect the precision grinding quality of the bearing. Secondly, the service life of oil seals is relatively short. Frequent high-speed rotation and friction cause the oil seals to wear easily, resulting in decreased sealing performance and requiring frequent replacement, increasing equipment maintenance costs and downtime.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a bearing precision grinding wheel shaft oil seal sealing structure. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a bearing precision grinding wheel shaft oil seal sealing structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bearing precision grinding wheel shaft oil seal sealing structure, including an oil seal body and a sealing lip bonded to the inner side wall of the oil seal body. The sealing lip consists of two lip pieces connected at their tails to achieve a double-layer seal, with a cavity in the middle for accommodating lubricating oil.

[0007] Preferably, the interior of the oil seal body is filled with rigid components, which extend outward from the interior of the oil seal body and are fixed to multiple connectors.

[0008] Preferably, the connector includes a connecting plate connected to a rigid component and a fixing plate fixed to the head of the connecting plate.

[0009] Preferably, the fixing plate has a through groove in the middle for the positioning pin to pass through, and multiple through holes for screws to pass through are arranged in a circumferential array on the outer part of the fixing plate at the through groove, which effectively prevents the oil seal body from axially moving during equipment operation.

[0010] Preferably, the sealing lip has a root, and an outer lip and an inner lip integrally formed with the root at the top of the root. The outer lip and the inner lip form a V-shaped structure. The two sealing lips are connected by the root fitting together, and the V-shaped structure has a certain interference fit.

[0011] Preferably, the rigid component is a stainless steel wire or a stainless steel sheet, which has low production cost and good corrosion resistance.

[0012] Preferably, the sealing lip is made of nitrile rubber and the oil seal body is made of fluororubber, which improves the performance of both.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The two sealing lips of this utility model are in close contact with the surface of the grinding wheel shaft, which is equivalent to setting up two sealing defenses between the shaft and the outside world, providing a more reliable sealing guarantee for the inside of the equipment. It can effectively prevent lubricating oil from leaking from the gap between the shaft and the oil seal body. At the same time, the cavity in the middle of the two sealing lips can serve as a storage space to hold lubricating oil. During the operation of the equipment, lubricating oil plays a key role in reducing friction and wear between the rotating shaft and components such as the oil seal, maintaining good lubrication, thereby extending the service life of the oil seal and related components. This solves the problem of easy lubricating oil leakage and the problem of easy wear of the oil seal caused by frequent high-speed rotation and friction in the background art.

[0015] 2. The interior of the oil seal body of this utility model is filled with rigid components, which can significantly enhance the overall structural strength of the oil seal body and make it more capable of resisting deformation caused by these external forces;

[0016] 3. The V-shaped structure formed between the outer lip and the inner lip of this utility model has a certain interference fit. After installation, it generates stress on the sealing working surface through its own elasticity to achieve a better sealing effect. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Another perspective on the specific structure;

[0020] Figure 3This is a schematic diagram of the specific structure of this utility model after being transversely cut along the middle.

[0021] In the diagram: 1. Oil seal body; 2. Sealing lip; 201. Root; 202. Outer lip; 203. Inner lip; 3. Cavity; 4. Connector; 401. Connecting plate; 402. Fixing plate; 403. Through groove; 404. Through hole. Detailed Implementation

[0022] like Figure 1-3 As shown, this utility model provides a bearing precision grinding wheel shaft oil seal sealing structure, including an oil seal body 1 and a sealing lip 2 bonded to the inner side wall of the oil seal body 1. There are two sealing lips 2, and their tails are connected to achieve a double-layer seal. A cavity 3 for containing lubricating oil is formed in the middle.

[0023] In use, the oil seal body 1 is first wrapped around the outer circumference of the grinding wheel shaft and fixed to the outer casing of the equipment. The two sealing lips 2 on its inner side are in close contact with the surface of the grinding wheel shaft, which is equivalent to setting up two sealing defenses between the shaft and the outside world. Even if the first sealing lip 2 develops some leakage channels due to wear, slight vibration of the shaft or other factors during long-term use, the second sealing lip 2 can still play a blocking role, greatly reducing the possibility of leakage of media such as lubricating oil, providing a more reliable sealing guarantee for the inside of the equipment, and effectively preventing lubricating oil from leaking from the gap between the shaft and the oil seal body 1. At the same time, the cavity 3 in the middle of the two sealing lips 2 can serve as a storage space to hold lubricating oil. During the operation of the equipment, lubricating oil plays a key role in reducing friction and wear between the rotating shaft and components such as the oil seal, maintaining good lubrication, and thus extending the service life of the oil seal and related components.

[0024] Furthermore, the interior of the oil seal body 1 is filled with rigid components, which significantly enhances the overall structural strength of the oil seal body 1, making it more capable of resisting deformation caused by external forces. For example, when the centrifugal force generated by the high-speed rotation of the grinding wheel shaft acts on the oil seal, the rigid material helps the oil seal body 1 maintain its original shape, preventing excessive dents or bulges, thus ensuring that the sealing performance of the oil seal body 1 is not affected. In actual use, stainless steel wire or stainless steel sheets are often used for the rigid components, which have low production costs and good corrosion resistance. The rigid components extend outward from the inside of the oil seal body 1 and are fixed to multiple connectors 4. The connectors 4 connect the oil seal body 1 to the equipment shell, thereby fixing the oil seal body 1 and ensuring a tight seal. The sealing lip 2 is made of nitrile rubber, which has good oil resistance, wear resistance, and temperature resistance. It can effectively resist the corrosion of various oils such as lubricating oil and hydraulic oil, ensuring that it maintains its sealing performance for a long time in oil contact environments. Its wear resistance makes the sealing lip 2 wear relatively slowly during frequent friction with the rotating shaft, which can effectively extend the service life of the sealing lip 2. The oil seal body 1 is made of fluororubber, which is a high-performance rubber material with excellent oil resistance, chemical corrosion resistance, and high temperature resistance. It can withstand almost all types of oils, including some highly corrosive special oils, and its performance remains stable in high-temperature environments, meeting the sealing requirements of oil seals in harsh industrial environments.

[0025] The following is the specific structure of the connector 4. The connector 4 includes a connecting plate 401 connected to the rigid component, and a fixing plate 402 fixed to the head of the connecting plate 401. The fixing plate 402 has a through groove 403 in the middle for the positioning pin to pass through. The fixing plate 402 has a plurality of through holes 404 for screws to pass through in a circular array on the outer part of the through groove 403. Correspondingly, screw holes for screw installation and positioning grooves for positioning pins to be inserted are opened on the equipment housing.

[0026] After the oil seal body 1 is wrapped around the outer circumference of the grinding wheel shaft, the positioning pin passes through the through groove 403 on the fixing plate 402 and is then inserted into the positioning groove on the equipment housing to stably position the oil seal body 1. Then, the screw passes through the through hole 404 on the fixing plate 402 and is rotated clockwise to install it into the screw hole on the equipment housing, thereby fixing the position of the oil seal body 1. This can achieve extremely precise positioning of the oil seal body 1 in the axial direction, effectively preventing axial movement of the oil seal body 1 during equipment operation, thus ensuring that the relative positional relationship between the oil seal and the rotating shaft remains accurate, which is crucial for improving the sealing effect of the oil seal.

[0027] The sealing lip 2 has a root 201, and an outer lip 202 and an inner lip 203 integrally formed with the root 201 at the top of the root 201. The outer lip 202 and the inner lip 203 form a V-shaped structure. The two sealing lips 2 are connected by fitting together through the root 201. The V-shaped structure has a certain interference. After installation, the stress generated on the sealing working surface by its own elasticity achieves a better sealing effect.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A bearing precision grinding wheel shaft oil seal sealing structure, comprising an oil seal body (1) and a sealing lip (2) bonded to the inner sidewall of the oil seal body (1), characterized in that: The sealing lip (2) consists of two parts, which are connected at their tails to achieve a double seal, and a cavity (3) for accommodating lubricating oil is formed in the middle.

2. The bearing precision grinding wheel shaft oil seal sealing structure according to claim 1, characterized in that: The interior of the oil seal body (1) is filled with rigid components, which extend outward from the inside of the oil seal body (1) and are fixed to multiple connectors (4).

3. The bearing precision grinding wheel shaft oil seal sealing structure according to claim 2, characterized in that: The connector (4) includes a connecting plate (401) connected to a rigid component, and a fixing plate (402) fixed to the head of the connecting plate (401).

4. The bearing precision grinding wheel shaft oil seal sealing structure according to claim 3, characterized in that: The fixing plate (402) has a through groove (403) in the middle for the positioning pin to pass through, and multiple through holes (404) for screws to pass through are arranged in a circular array on the outer part of the through groove (403) of the fixing plate (402).

5. The bearing precision grinding wheel shaft oil seal sealing structure according to claim 1, characterized in that: The sealing lip (2) has a root (201), and an outer lip (202) and an inner lip (203) integrally formed with the root (201) at the top of the root (201). The outer lip (202) and the inner lip (203) form a V-shaped structure. The two sealing lips (2) are connected by the root (201) fitting together.

6. The bearing precision grinding wheel shaft oil seal sealing structure according to claim 2, characterized in that: The rigid component is made of woven stainless steel wire or stainless steel sheet.

7. The bearing precision grinding wheel shaft oil seal sealing structure according to claim 1, characterized in that: The sealing lip (2) is made of nitrile rubber, and the oil seal body (1) is made of fluororubber.

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