Oil seal assembling device capable of preventing rubber lip from being overturned

Abstract

The utility model discloses an oil seal assembling device capable of preventing a rubber lip from being overturned reversely, which is characterized in that the section of a tool base is U-shaped, a vertical arm of a T-shaped oil seal expanding shaft penetrates through the bottom edge of the base and can move up and down on the base, and a groove for accommodating an inner ring of a dust cover is formed in the upper surface of a cross arm of the T-shaped oil seal expanding shaft; the oil seal fixing tool is placed above the tool base, the section of the oil seal fixing tool is in an inverted U shape, an oil seal fixing groove is formed in an opening of the lower end of the oil seal fixing tool, the press-fitting tool is installed in the oil seal fixing tool, and the section of the press-fitting tool is in an inverted T shape. A vertical arm of the inverted-T-shaped press fitting tool penetrates through the bottom edge of the oil seal fixing tool and can move up and down in the oil seal fixing tool. A limiting groove is formed in an upper opening of the tool base. The oil seal assembling machine has the advantages of being capable of achieving automatic assembling of the oil seal and the dustproof cover of the oil seal, and preventing the lip of the oil seal from being reversely turned over in the reverse direction and preventing the oil seal from being damaged during manual operation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil seal packaging equipment technical field, especially, relate to a kind of oil seal assembly device for preventing rubber lip from being reversed when oil seal mounting dust cover. BACKGROUND

[0002] In the production process of oil seal, part kinds of oil seal need to be assembled dust cover after production to protect oil seal, refer to Figure 1 ; In order to ensure performance, the lip of oil seal needs to be closely combined with dust cover, which requires the inner diameter of the lip of oil seal to be less than the diameter of dust cover, and currently dust cover is assembled manually, the sharp corner of dust cover can scratch the rubber lip of oil seal when manually pressing dust cover into oil seal, refer to Figure 2 、 Figure 3 , and even push the lip of oil seal out of oil seal. Therefore, when manually assembling oil seal and dust cover, it is not only difficult to operate, but also can damage oil seal product. INVENTION CONTENTS

[0003] The utility model aims at improving the deficiencies of prior art and providing an oil seal assembly device for preventing rubber lip from being reversed, which can realize automatic assembly of oil seal and dust cover, avoid the lip of oil seal from being reversed in the opposite direction and avoid damage to oil seal during manual operation.

[0004] The utility model aims at improving the deficiencies of prior art and providing an oil seal assembly device for preventing rubber lip from being reversed, which can realize automatic assembly of oil seal and dust cover, avoid the lip of oil seal from being reversed in the opposite direction and avoid damage to oil seal during manual operation.

[0005] In order to further realize the purpose of the utility model, the lower surface of the T-shaped horizontal arm of the press-fitting tool can be provided with a boss in the middle, and the diameter of the boss is not greater than the diameter of the inner hole of the dust cover.

[0006] Compared with existing technologies, this utility model has the following significant features and positive effects: This utility model employs a method where a dust cover is fitted simultaneously with the expansion of the oil seal shaft to be assembled. The diameter of the lip of the expanded oil seal is not less than the inner diameter of the dust cover. The dust cover is placed in the dust cover groove on the top surface of the expansion shaft. An external power source drives the pressing fixture to press down. When pressed to a certain position, the oil seal to be assembled cannot descend further due to the limiting groove of the fixing fixture. The dust cover is then installed on the oil seal, the expansion shaft descends away from the oil seal, and the oil seal lip is released and safely contacts the inner ring of the dust cover. This achieves automatic installation of the dust cover on the oil seal, improving production efficiency and avoiding product damage. Furthermore, the assembly is uniform, with no abnormal phenomena such as lip flipping. The boss in the middle of the lower surface of the T-shaped cross arm of the pressing fixture has a diameter not greater than the diameter of the inner hole of the dust cover, ensuring that the inner ring of the dust cover can be completely inserted into the lip of the oil seal, thus completing the assembly work effectively. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of the oil seal and dust cover to be assembled.

[0008] Figure 2 This is a schematic diagram of the manual assembly process.

[0009] Figure 3 A schematic diagram of the completed assembly of the oil seal and dust cover.

[0010] Figure 4 This is a schematic diagram of one structure of the present utility model.

[0011] Figure 5 This is a schematic diagram of one assembled structure of the present utility model.

[0012] In the diagram: 1. Dust cover, 2. Oil seal to be assembled, 3. Tooling base, 4. Oil seal fixing tool, 5. Oil seal expansion shaft, 6. Press fitting tool, 7. Limiting groove, 8. Groove, 9. Boss. Detailed Implementation

[0013] An oil seal assembly device for preventing the rubber lip from flipping over, as described in the following figure. Figure 4, including tool base 3, the tool base 3 cross-section is U-shaped, T-shaped oil seal expanding shaft 5 vertical arm through the tool base 3 bottom edge installed in the tool base 3 cavity, and can be in the tool base 3 cavity up and down action, T-shaped oil seal expanding shaft 5 horizontal arm upper surface is provided with a groove 8 for accommodating the inner ring of dust cover 1, the diameter of dust cover 1 is greater than the diameter of T-shaped horizontal arm of oil seal expanding shaft 5, oil seal fixing tool 4 is placed above the tool base 3, the cross-section of the oil seal fixing tool 4 is inverted U-shaped, the lower end opening is provided with an oil seal fixing groove suitable for assembling oil seal 2, the pressing tool 6 is installed in the oil seal fixing tool 4, the cross-section of the pressing tool 6 is inverted T-shaped, the vertical arm of the inverted T-shaped pressing tool 6 passes through the bottom edge of the oil seal fixing tool 4 and can move up and down in the oil seal fixing tool 4, the upper opening of the tool base 3 is provided with a limiting groove 7, the limiting groove 7 is used to block the oil seal fixing tool 4 and the oil seal 2 to be assembled; the lower surface of the T-shaped horizontal arm of the pressing tool 6 is provided with a boss 9, the diameter of the boss 9 is not greater than the diameter of the inner hole of the dust cover 1, and the inner cavity diameter of the oil seal fixing tool 4 is not less than the diameter of the dust cover 1.

[0014] When using the new type, the oil seal 2 to be assembled and the dust cover 1 are as shown in Figure 1 , the oil seal expanding shaft 5 is in the ejection position, the oil seal 2 to be assembled is sleeved on the oil seal expanding shaft 5, since the diameter of the T-shaped horizontal arm of the oil seal expanding shaft 5 is greater than the diameter of the oil seal lip, at this time the lip of the oil seal 2 to be assembled has been expanded, the dust cover 1 is placed on the top surface of the oil seal expanding shaft 5, the inner ring of the dust cover 1 is located in the dust cover groove 8 on the top of the oil seal expanding shaft 5, at this time the diameter of the oil seal lip of the oil seal 2 to be assembled is greater than the oil seal lip contact surface of the dust cover 1, that is, the diameter of the inner ring of the dust cover 1, the oil seal fixing tool 4 is assembled, so that the oil seal 2 to be assembled is positioned and limited in the groove of the oil seal fixing tool 4 by the oil seal fixing tool 4 and the limiting groove 7 of the tool base 3.

[0015] When assembling, the external power drives the pressing tool 6 to press down, the tool base 3, the oil seal fixing tool 4 and the oil seal 2 to be assembled are stationary, the pressing tool 6 can be pressed down, the pressing tool 6 pushes against the oil seal expanding shaft 5 and moves downward, when the oil seal expanding shaft 5 retreats downward to the appropriate position, as shown in Figure 5 , the dust cover 1 is installed on the oil seal 2 to be assembled, as shown in Figure 3 , the oil seal expanding shaft 5 continues to move downward, the oil seal of the assembled dust cover 1 falls off from the oil seal expanding shaft 5, that is, the assembly is completed.

Claims

1. An oil seal assembly device for preventing the rubber lip from flipping over, comprising a tooling base, characterized in that: The tooling base has a U-shaped cross-section. The vertical arm of the T-shaped oil seal expansion shaft passes through the bottom edge of the base and can move up and down within the base. The upper surface of the horizontal arm of the T-shaped oil seal expansion shaft has a groove for accommodating the inner ring of the dust cover. The oil seal fixing fixture is placed above the tooling base. The oil seal fixing fixture has an inverted U-shaped cross-section and an oil seal fixing groove at the lower opening. The press-fit fixture is installed inside the oil seal fixing fixture. The press-fit fixture has an inverted T-shaped cross-section. The vertical arm of the inverted T-shaped press-fit fixture passes through the bottom edge of the oil seal fixing fixture and can move up and down within the oil seal fixing fixture. The upper opening of the tooling base has a limiting groove, which is used to block and limit the oil seal fixing fixture and the oil seal to be assembled.

2. The oil seal assembly device for preventing the rubber lip from flipping over according to claim 1, characterized in that: The lower surface of the T-shaped cross arm of the press-fitting fixture is provided with a boss, the diameter of which is not greater than the diameter of the inner hole of the dust cover.

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