Grease injection tool for long auxiliary lip of oil seal

Abstract

The utility model relates to an oil seal long auxiliary lip grease injection tool, which comprises a shell with a cavity structure, an oil nozzle disc and a limit disc, the shell is provided with a first opening and a second opening which are communicated with an inner cavity of the shell, the first opening is connected with a grease cylinder, the oil nozzle disc is connected to the second opening, and the limit disc is connected to the oil seal long auxiliary lip. The oil nozzle disc is provided with a groove, an oil port communicated with an inner cavity of the shell is formed in the inner wall of the groove, the limiting disc is connected into the groove in a floating mode, the limiting disc is provided with a step face, and the limiting disc can slide to enable the step face to be located above the oil port or below the oil port. According to the grease injection tool for the long auxiliary lip of the oil seal, the uniformity of grease injection can be guaranteed.

Description

Technical Field

[0001] The utility model relates to an oil seal grease injection tool, in particular to an oil seal long auxiliary lip grease injection tool. Background Art

[0002] Domestic oil seals have the characteristics of low price and excellent sealing performance, so their usage is increasing and they have a high market share. In order to ensure the performance of the oil seal, it is necessary to inject lubricating grease into the long auxiliary lip of the oil seal. The traditional method of injecting lubricating grease is through manual application, which is time-consuming and labor-intensive. To this end, the Chinese utility model patent with announcement number CN219796863U discloses a grease injection tooling for complex structure sealing rings of wheel hub bearings to solve the shortcomings of uneven manual application and low efficiency. However, the use of the tooling disclosed in the patent will also have corresponding disadvantages, specifically the inability to control the amount of application. Although the evenly distributed grease injection holes can ensure the uniform amount of grease in a single sealing ring, there will be differences in the amount of grease injected between different sealing rings.

[0003] Based on this, it is necessary to improve the existing tooling. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a grease injection tool for a long auxiliary lip of an oil seal.

[0005] Technical solution: To achieve the above purpose, the utility model discloses a grease injection tool for a long auxiliary lip of an oil seal, comprising:

[0006] A shell having a cavity structure, wherein the shell is provided with a first opening and a second opening communicating with the inner cavity thereof, wherein the first opening is connected to a grease cylinder;

[0007] An oil nozzle plate, the oil nozzle plate is connected to the second opening, the oil nozzle plate is provided with a groove, and an oil port communicating with the inner cavity of the housing is provided on the inner wall of the groove;

[0008] The limiting plate is floatingly connected to the groove, and the limiting plate is provided with a step surface. The limiting plate can slide to make the step surface above the oil port or below the oil port.

[0009] Furthermore, it also includes a guide column, the bottom of which is connected to the nozzle plate, and the guide column extends upward through the nozzle plate and the limit plate. A spring is arranged between the nozzle plate and the limit plate, and the spring sleeve is connected to the guide column.

[0010] Furthermore, it also includes a pressure plate, which passes through the guide pillar, and the lower surface of the pressure plate is in contact with the upper surface of the limiting plate.

[0011] Furthermore, the housing comprises an oil injection base and an oil injection outer sleeve which are connected to each other, the first opening is arranged on the oil injection base, and the second opening is arranged on the oil injection outer sleeve.

[0012] Furthermore, an internal thread is provided on the inner wall of the first opening.

[0013] Furthermore, the inner wall of the groove is interference fit with the long auxiliary lip of the sealing ring to be injected with grease.

[0014] The utility model discloses a grease injection tool for a long auxiliary lip of an oil seal, which has the following technical effects:

[0015] A limit plate is added. When grease is injected, the limit plate, sealing ring and pressure plate form a chamber with fixed volume, which can ensure that each sealing ring is evenly coated with grease during grease injection. At the same time, the oil ports arranged in an array can ensure that different parts of the same sealing ring can be evenly coated with grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure, 1. housing; 2. first opening; 3. second opening; 4. nozzle plate; 5. groove; 6. oil port; 7. limit plate; 8. guide column; 9. spring; 10. pressure plate; 11. oil filling base; 12. oil filling jacket; 13. sealing ring. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0019] A grease injection tool for a long auxiliary lip of an oil seal comprises a housing 1, a nozzle plate 4, a limit plate 7, a guide column 8 and a pressure plate 10.

[0020] The housing 1 has a cavity structure, and is provided with a first opening 2 and a second opening 3 communicating with the inner cavity thereof. An internal thread is provided on the inner wall of the first opening 2, and the first opening 2 is detachably connected to the grease barrel through the internal thread, and the second opening 3 is connected to the oil nozzle plate 4, and the cavity in the housing 1 is communicated with the grease barrel. Specifically, the housing 1 includes an oil injection base 11 and an oil injection jacket 12 connected to each other, the first opening 2 is provided on the oil injection base 11, and the second opening 3 is provided on the oil injection jacket 12.

[0021] A downward groove 5 is provided at the center of the nozzle plate 4, and an oil port 6 communicating with the inner cavity of the housing 1 is provided on the inner wall of the groove 5. The grease entering the housing 1 overflows through the oil port 6. There are multiple oil ports 6, and the multiple oil ports 6 are arranged in a circumferential array. The bottom of the guide column 8 is connected to the nozzle plate 4, and extends upward after passing through the nozzle plate 4.

[0022] The limit plate 7 is connected to the groove 5 in a floating manner. Specifically, a spring 9 is provided between the nozzle plate 4 and the limit plate 7, and the spring 9 is sleeved and connected to the guide post 8. In the absence of external force, the limit plate 7 has a tendency to move away from the nozzle plate 4 due to the action of the spring 9. The guide post 8 passes through the limit plate 7 upward. The upper surface of the limit plate 7 is a step surface, and the limit plate 7 can slide to make the step surface above the oil port 6, or below the oil port 6.

[0023] The pressure plate 10 is arranged above the limiting plate 7, the bottom surface of the pressure plate 10 is closely connected with the top surface of the limiting plate 7, and the pressure plate 10 passes through the guide pillar 8. The sealing ring 13 to be injected with grease is arranged between the pressure plate 10 and the limiting plate 7, wherein the long auxiliary lip of the sealing ring 13 to be injected with grease extends into the groove 5, and the inner wall of the groove 5 is interference fit with the long auxiliary lip of the sealing ring 13 to be injected with grease.

[0024] The steps for using the oil seal long auxiliary lip grease injection tooling disclosed in this scheme for the first time are:

[0025] (S1) The oil filling base 11 is screwed to the grease cylinder.

[0026] (S2) The oil nozzle plate 4, the guide column 8 and the oil filling sleeve 12 which are interference fit together are screwed onto the oil filling base 11.

[0027] (S3) The guide post 8 is sleeved with the spring 9, and the limit plate 7 is lowered along the guide post 8.

[0028] (S4) Turn on the oil injection vacuum pump switch, press the limit plate 7 downward until its step surface is below the oil port 6, and the grease enters the groove 5 from the cavity of the housing 1.

[0029] (S5) The sealing ring 13 to be injected with grease is slid down along the guide post 8 until its long auxiliary lip extends into the groove 5, and finally the pressure plate 10 is slid down along the guide post 8 and pressed.

[0030] (S6) The pressure plate 10 and the sealing ring 13 which have been injected with grease are removed in sequence, and the injection of grease is completed.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grease injection tool for a long auxiliary lip of an oil seal, characterized in that: include: A housing (1) having a cavity structure, wherein the housing (1) is provided with a first opening (2) and a second opening (3) communicating with its inner cavity, wherein the first opening (2) is connected to a grease cylinder; An oil nozzle plate (4), the oil nozzle plate (4) being connected to the second opening (3), the oil nozzle plate (4) being provided with a groove (5), and an oil port (6) communicating with the inner cavity of the housing (1) being provided on the inner wall of the groove (5); A limit plate (7), wherein the limit plate (7) is floatingly connected to the groove (5), and the limit plate (7) is provided with a step surface, and the limit plate (7) can slide to make the step surface above the oil port (6) or below the oil port (6).

2. The oil seal long auxiliary lip grease injection tooling according to claim 1, characterized in that: It also includes a guide column (8), the bottom of which is connected to the nozzle plate (4), and the guide column (8) extends upward through the nozzle plate (4) and the limit plate (7). A spring (9) is provided between the nozzle plate (4) and the limit plate (7), and the spring (9) is sleeved and connected to the guide column (8).

3. The oil seal long auxiliary lip grease injection tooling according to claim 2, characterized in that: It also includes a pressure plate (10), which passes through the guide column (8), and the lower surface of the pressure plate (10) is in contact with the upper surface of the limiting plate (7).

4. The oil seal long auxiliary lip grease injection tooling according to claim 1, characterized in that: The housing (1) comprises an oil injection base (11) and an oil injection jacket (12) which are connected to each other; the first opening (2) is arranged on the oil injection base (11) and the second opening (3) is arranged on the oil injection jacket (12).

5. The oil seal long auxiliary lip grease injection tooling according to claim 4, characterized in that: An internal thread is provided on the inner wall of the first opening (2).

6. The oil seal long auxiliary lip grease injection tooling according to claim 1, characterized in that: The inner wall of the groove (5) is interference fit with the long auxiliary lip of the sealing ring (13) to be injected with grease.

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