Rubber oil seal oil injection structure

Abstract

A rubber oil seal oil injection structure comprises a first grease injection tool, a second grease injection tool and injection holes, the first grease injection tool is fixedly arranged above the second grease injection tool, the injection holes are formed in the lower ends of the interiors of the first grease injection tool and the second grease injection tool, and a grease injection amount limiting structure is arranged in the first grease injection tool. According to the oil injection structure for the rubber oil seal, after the first grease injection tool and the second grease injection tool are precisely and carefully combined and installed, the injection hole is formed in the lower end of the second grease injection tool and used for injecting lubricating grease of the oil seal, the two tools are machined and combined together, the lubricating grease is injected into the upper lubricating grease cavity from the injection hole, and therefore the oil seal is formed. Grease injection in the early stage is uniform, the grease injection amount is consistent, the quality is stable, lubricating grease injection equipment is not changed, the equipment debugging time of workers is shortened, the working efficiency is improved, and the sealing reliability of the oil seal is improved.

Description

Technical Field

[0001] This utility model relates to the field of rubber oil seal technology, and in particular to a rubber oil seal oil injection structure. Background Technology

[0002] Oil seal is a common term for general sealing components. Simply put, it is a seal for lubricating oil. It is a mechanical component used to seal grease. Oil is the most common liquid substance in transmission systems. It isolates the lubricated parts from the output parts in the transmission components to prevent lubricating oil leakage. Static seals and dynamic seals are called oil seals.

[0003] For example, an oil seal injection tool with authorization announcement number CN202501177U is made into tooling of different sizes according to different oil seal specifications. The number and size of its injection holes can be designed and manufactured according to user requirements or operating conditions, achieving the requirements of balanced oil injection volume and uniformity of injection position. It has the advantages of reasonable and beautiful structure and improved production efficiency.

[0004] However, there are still some problems with the use of the oil seal lubrication tool mentioned above. For example, the oil injection point of the existing lubrication tool is sometimes large and sometimes small, and the amount of grease injected is inconsistent. Stable steam pressure and manual adjustment equipment are required to ensure this. Summary of the Invention

[0005] This invention aims to solve the problems existing in the prior art by providing a rubber oil seal injection structure that can achieve uniform grease injection at the lip of the oil seal and consistent grease volume through a special and precise mold tooling design.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A rubber oil seal injection structure is designed, including a first grease injection fixture, a second grease injection fixture, and an injection hole. The first grease injection fixture is fixedly disposed above the second grease injection fixture. An injection hole is provided at the lower end of the interior of the first grease injection fixture and the second grease injection fixture. The interior of the first grease injection fixture is provided with a grease volume limiting structure.

[0008] Further improvements include a grease injection volume limiting structure comprising a mating surface and a first grease injection hole. The mating surface is fixedly connected to the lower front end of the first grease injection fixture. The first grease injection hole is fixedly opened on the upper inner side of the mating surface, and the second grease injection hole is opened on the lower inner side of the mating surface.

[0009] Further improvements include a grease cavity fixedly connected to the top of the injection hole, and the top of the injection hole being perpendicular to the inner side of the first grease injection fixture.

[0010] To further improve the design, a delivery channel is fixedly connected to one side of the grease cavity.

[0011] Further improvements include connecting the end of the delivery channel to the first grease injection hole and connecting the lower end of the delivery channel to the second grease injection hole.

[0012] The beneficial effects of this utility model are as follows: After the first and second grease injection fixtures are precisely assembled, an injection hole is opened at the lower end of the second grease injection fixture for injecting grease into the oil seal. The two fixtures are processed and combined together. The grease is injected into the upper grease cavity through the injection hole and then evenly injected into the lip of the oil seal through the injection hole. The grease injection is uniform in the early stage, and the amount of grease injected is consistent, resulting in stable quality. The grease injection equipment remains unchanged, reducing the time for workers to adjust the equipment, improving work efficiency, and improving the sealing reliability of the oil seal. Attached Figure Description

[0013] Figure 1 This is a front sectional view of the present invention;

[0014] Figure 2 for Figure 1 Enlarged sectional view of section A in the middle;

[0015] Figure 3 for Figure 1 Enlarged sectional view of section B;

[0016] Figure 4 This is a cross-sectional view of a conventional technical solution.

[0017] Explanation of reference numerals in the attached figures: 1. First grease injection fixture, 2. Second grease injection fixture, 3. Injection hole, 4. Grease cavity, 5. First grease injection hole, 6. Second grease injection hole, 7. Delivery channel, 8. Mating surface, 9. Grease volume limiting structure. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Example 1:

[0020] See attached document Figure 1-4 In this embodiment, a rubber oil seal injection structure includes a first grease injection fixture 1, a second grease injection fixture 2, and an injection hole 3. The first grease injection fixture 1 is fixedly disposed above the second grease injection fixture 2. An injection hole 3 is provided at the lower end of the interior of the first grease injection fixture 1 and the second grease injection fixture 2. After the first grease injection fixture 1 and the second grease injection fixture 2 are precisely assembled and installed, an injection hole 3 is provided at the lower end of the second grease injection fixture 2 for injecting grease into the oil seal.

[0021] The first grease injection fixture 1 has a grease volume limiting structure 9 inside. Two fixtures are processed and combined together. The grease is injected into the upper grease cavity through the injection hole and then evenly injected into the oil seal lip through the grease injection hole. The grease injection is uniform in the early stage, and the grease volume is consistent, resulting in stable quality. The grease injection equipment remains unchanged, reducing the time for workers to adjust the equipment, improving work efficiency, and improving the reliability of the oil seal.

[0022] The grease injection volume limiting structure 9 includes a mating surface 8 and a first grease injection hole 5. The mating surface 8 is fixedly connected to the lower front end of the first grease injection fixture 1. The mating surface 8 is used to contact the oil seal structure on the outside of the two grease injection holes. The first grease injection hole 5 is fixedly opened on the upper inner side of the mating surface 8, and the second grease injection hole 6 is opened on the lower inner side of the mating surface 8. The top end of the injection hole 3 is fixedly connected to the grease cavity 4. The top end of the injection hole 3 is perpendicular to the inner side of the first grease injection fixture 1.

[0023] One side of the grease cavity 4 is fixedly connected to the delivery channel 7. The grease injected into the injection hole 3 will flow into the inner grease cavity 4. Then the grease in the grease cavity 4 will be injected into the two injection holes simultaneously along the delivery channel 7. The end of the delivery channel 7 is connected to the first injection hole 5, and the lower end of the delivery channel 7 is connected to the second injection hole 6.

[0024] Working principle:

[0025] The rubber oil seal injection structure adopts a special and precise mold tooling design, which enables uniform grease injection into the oil seal lip and consistent grease volume.

[0026] After the first grease injection fixture 1 and the second grease injection fixture 2 are precisely assembled and installed, an injection hole 3 is opened at the lower end of the second grease injection fixture 2 for injecting the grease for the oil seal.

[0027] The grease injected into injection hole 3 will flow into the inner grease cavity 4, and then the grease in the grease cavity 4 will be injected into both injection holes simultaneously along the delivery channel 7.

[0028] By machining two tooling pieces and combining them together, grease is injected into the upper grease cavity through the injection hole, and then evenly injected into the oil seal lip through the grease injection hole. The initial grease injection is uniform and the amount of grease injected is consistent, resulting in stable quality. The grease injection equipment remains unchanged, reducing the time workers spend debugging the equipment, improving work efficiency, and enhancing the reliability of the oil seal.

[0029] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A rubber oil seal filling structure, comprising a first grease injection fixture (1), a second grease injection fixture (2), and an injection hole (3), wherein the first grease injection fixture (1) is fixedly disposed above the second grease injection fixture (2), characterized in that: The lower end of the first grease injection fixture (1) and the second grease injection fixture (2) is provided with an injection hole (3), and the interior of the first grease injection fixture (1) is provided with a grease injection volume limiting structure (9).

2. The rubber oil sealing structure according to claim 1, characterized in that: The grease injection volume limiting structure (9) includes a mating surface (8) and a first grease injection hole (5). The mating surface (8) is fixedly connected to the lower front end of the first grease injection fixture (1). The first grease injection hole (5) is fixedly opened on the upper inner side of the mating surface (8), and the second grease injection hole (6) is opened on the lower inner side of the mating surface (8).

3. The rubber oil sealing structure according to claim 1, characterized in that: The top end of the injection hole (3) is fixedly connected to the grease cavity (4), and the top end of the injection hole (3) is perpendicular to the inner side of the first grease injection fixture (1).

4. The rubber oil sealing structure according to claim 3, characterized in that: The grease cavity (4) is fixedly connected to a delivery channel (7) on one side.

5. The rubber oil sealing structure according to claim 4, characterized in that: The end of the delivery channel (7) is connected to the first grease injection hole (5), and the lower end of the delivery channel (7) is connected to the second grease injection hole (6).

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