CN221365550U - Exposed framework type oil seal die - Google Patents
Exposed framework type oil seal die Download PDFInfo
- Publication number
- CN221365550U CN221365550U CN202323340723.XU CN202323340723U CN221365550U CN 221365550 U CN221365550 U CN 221365550U CN 202323340723 U CN202323340723 U CN 202323340723U CN 221365550 U CN221365550 U CN 221365550U
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- China
- Prior art keywords
- die
- oil seal
- mold
- frame body
- framework
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- 239000000463 material Substances 0.000 claims abstract description 48
- 239000003292 glue Substances 0.000 claims abstract description 46
- 238000002347 injection Methods 0.000 claims abstract description 46
- 239000007924 injection Substances 0.000 claims abstract description 46
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses an exposed framework type oil seal die which is used for producing an oil seal and comprises an upper die, a middle die, a lower die, a die core body and a die core head; the oil seal comprises a framework, an axial frame body and a radial frame body are arranged in the framework, the mold core body is arranged in the lower mold, the mold core head is arranged at the upper end part of the mold core body, the framework is arranged in the lower mold and positioned at the outer side of the mold core head, and the mold core body is provided with a material supporting part which is used for propping against the lower end surface of the radial frame body so as to support the framework; when the middle die and the lower die are combined, the middle die downwards presses the upper end part of the axial frame body and presses the lower end surface of the radial frame body on the material supporting part, so that the axial frame body, the radial frame body, the die core head and the middle die are surrounded to form a glue injection annular cavity. The utility model can produce the oil seal with exposed framework, and can expose the framework in the oil seal to the outside so as to improve the assembly strength of the oil seal.
Description
Technical Field
The utility model relates to an exposed framework type oil seal die.
Background
At present, the oil seal is provided with an exposed framework oil seal with an exposed framework, and the exposed framework oil seal is assembled and installed through the framework, so that the oil seal has higher assembly strength and is not easy to fall off, and is often applied to occasions with high rotating speed and high vibration. However, in the existing oil seal mold, for example, an oil seal mold disclosed in chinese patent publication No. CN202540721U, the skeleton in the produced oil seal is completely embedded in the rubber body, so that the skeleton cannot be exposed, and the produced oil seal has low assembly strength and cannot be used in occasions with high rotation speed and high vibration.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide an exposed framework type oil seal die which can produce an oil seal with exposed framework and can expose the framework in the oil seal to further improve the assembly strength of the oil seal.
In order to solve the technical problems, the technical scheme of the utility model is as follows: an exposed framework type oil seal mold is used for producing an oil seal and comprises an upper mold, a middle mold, a lower mold, a mold core body and a mold core head;
The oil seal comprises a framework, wherein the framework is provided with an axial frame body and a radial frame body, and the outer peripheral part of the radial frame body is connected to the lower end part of the axial frame body;
The mold core body is arranged in the lower mold, and the mold core head is arranged at the upper end part of the mold core body;
The framework is used for being placed in the lower die and positioned outside the die core head;
The mold core body is provided with a material supporting part which is used for propping against the lower end face of the radial frame body so as to support the framework;
The upper die is positioned above the middle die, the middle die is positioned above the lower die, and when the middle die and the lower die are clamped, the middle die downwards presses the upper end part of the axial frame body and presses the lower end surface of the radial frame body on the material supporting part, so that the axial frame body, the radial frame body, the die core head and the middle die are surrounded to form a glue injection ring cavity positioned at the inner side of the framework;
And the middle die is provided with a glue injection hole, and the lower end part of the glue injection hole is communicated with the glue injection annular cavity.
Further, the material supporting part is used for supporting the inner peripheral part of the radial frame body, and the lower die is provided with a step part used for supporting the outer peripheral part of the radial frame body and a ring wall part used for being matched with the outer side wall of the axial frame body to position the framework.
Further, a conical part with a large upper part and a small lower part is arranged on the middle die, and when the middle die and the lower die are clamped, the conical part downwards presses the upper end part of the axial frame body so as to tightly press the lower end surface of the radial frame body on the material supporting part and the step part.
Further provided is a concrete structure of the glue injection annular cavity, which comprises a lip cavity part positioned between the mold core body and the mold core head.
The oil seal further comprises a tetrafluoro lip piece, wherein a central hole is formed in the center of the tetrafluoro lip piece, and the tetrafluoro lip piece is used for being placed on the mold core head;
A positioning column which is used for being inserted into the central hole to position the tetrafluoro lip is arranged in the mold core head;
and a bearing part which surrounds the outer side of the positioning column and is used for bearing the inner peripheral part of the tetrafluorolip piece is also arranged in the mold core head.
Further, in order to compress the tetrafluorolip, the middle die is provided with a compressing part for compressing the tetrafluorolip on the supporting part when the middle die and the lower die are clamped.
Further, the middle die is provided with a containing cavity which is matched with the positioning column and used for containing the positioning column.
The upper end of the middle die is provided with a material cavity with an upward opening, the material cavity is positioned above the glue injection hole, and the bottom of the material cavity is communicated with the upper end of the glue injection hole;
The lower end part of the upper die is provided with a pressing block, and when the upper die and the middle die are combined, the pressing block stretches into the material cavity so as to press and inject materials in the material cavity into the glue injection ring cavity from the glue injection hole.
Further, at least two glue injection holes are uniformly distributed along the circumferential direction.
Further provided is a mounting structure of the mold core body, wherein the mold core body is mounted in the lower mold in a sliding manner along the up-down direction.
After the technical scheme is adopted, materials are injected into the glue injection annular cavity through the glue injection holes, the materials are molded in the glue injection annular cavity to obtain a rubber body, the glue injection annular cavity is positioned at the inner side of the framework, the middle die presses the upper end part of the axial frame body, the lower end face of the radial frame body is pressed on the material supporting part, so that the materials in the glue injection annular cavity can be sealed to prevent the materials from leaking to the outer side wall of the framework, and then the materials are only connected to the inner side wall of the framework after the rubber body is molded, the outer side wall of the framework is exposed, the oil seal with the exposed framework is produced, the outer side wall of the framework in the oil seal is exposed, the assembly strength of the oil seal can be improved through the assembly of the framework, and the oil seal can be applied to occasions with high rotating speed and high vibration and is not easy to fall off.
Drawings
FIG. 1 is a schematic diagram of the structure of an exposed framework type oil seal mold in mold separation;
FIG. 2 is a schematic diagram of the structure of the exposed framework type oil seal mold in the mold closing process;
FIG. 3 is a schematic diagram of the structure shown at A in FIG. 2;
FIG. 4 is a schematic diagram of the structure at B in FIG. 3;
Fig. 5 is a schematic structural diagram of an oil seal produced by the exposed framework type oil seal mold of the present utility model.
Detailed Description
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in fig. 1 to 5, an exposed framework type oil seal mold is used for producing an oil seal and comprises an upper mold 1, a middle mold 2, a lower mold 3, a mold core body 4 and a mold core head 5;
The oil seal comprises a framework 6, wherein the framework 6 is provided with an axial frame body 7 and a radial frame body 8, and the outer periphery of the radial frame body 8 is connected to the lower end part of the axial frame body 7;
the mold core body 4 is arranged in the lower mold 3, and the mold core head 5 is arranged at the upper end part of the mold core body 4;
the framework 6 is used for being placed in the lower die 3 and is positioned outside the die core head 5;
The mold core body 4 is provided with a material supporting part 9 which is used for propping against the lower end surface of the radial frame body 8 so as to support the framework 6;
the upper die 1 is located above the middle die 2, the middle die 2 is located above the lower die 3, when the middle die 2 and the lower die 3 are clamped, the middle die 2 presses down the upper end part of the axial frame body 7 and presses the lower end surface of the radial frame body 8 on the material supporting part 9, so that the axial frame body 7, the radial frame body 8, the die core body 4, the die core head 5 and the middle die 2 are surrounded to form a glue injection annular cavity 10 located inside the framework 6;
A glue injection hole 11 is formed in the middle die 2, and the lower end part of the glue injection hole 11 is communicated with the glue injection annular cavity 10; specifically, the material is injected into the glue injection annular cavity 10 through the glue injection hole 11, the rubber body 12 is obtained after the material is molded in the glue injection annular cavity 10, because the glue injection annular cavity 10 is positioned at the inner side of the framework 6, the middle die 2 presses the upper end part of the axial frame body 7, the lower end surface of the radial frame body 8 is pressed on the material supporting part 9, so that the material in the glue injection annular cavity 10 can be sealed to prevent the material from leaking to the outer side wall of the framework 6, and then the rubber body 12 is only connected to the inner side wall of the framework 6 after being molded, and the outer side wall of the framework 6 is exposed, so that an oil seal with the exposed framework 6 is produced, the outer side wall of the framework 6 in the oil seal is exposed, the assembly strength of the oil seal can be improved through the assembly of the framework 6, and the oil seal can be applied to occasions with high rotation speed and high vibration, and the oil seal is not easy to fall off.
As shown in fig. 3 and 4, the material supporting portion 9 is configured to support an inner peripheral portion of the radial frame 8, and the lower die 3 is provided with a step portion 13 configured to support an outer peripheral portion of the radial frame 8, and a ring wall portion 14 configured to cooperate with an outer side wall of the axial frame 7 to position the skeleton 6.
As shown in fig. 3 and 4, the middle mold 2 is provided with a tapered portion 15 with a large top and a small bottom, and when the middle mold 2 and the lower mold 3 are closed, the tapered portion 15 presses down the upper end portion of the axial frame 7, so as to press the lower end surface of the radial frame 8 against the material supporting portion 9 and the step portion 13.
As shown in fig. 3 and 4, the glue injection ring cavity 10 includes a lip cavity portion 16 located between the mold core body 4 and the mold core head 5, and a sealing lip in an oil seal can be formed in the lip cavity portion 16.
As shown in fig. 1 to 5, the oil seal may further include a tetrafluoro lip 17, a center hole is provided in the center of the tetrafluoro lip 17, and the tetrafluoro lip 17 is used for being placed on the mold core 5;
A positioning column 18 for being inserted into the central hole to position the tetrafluorolip 17 is arranged in the mold core head 5;
The die core head 5 is also provided with a supporting part 19 which surrounds the outer side of the positioning column 18 and is used for supporting the inner peripheral part of the tetrafluorolip 17; the tetrafluorolip 17 is a sheet made of polytetrafluoroethylene.
As shown in fig. 3 and 4, the middle mold 2 is provided with a pressing portion 20 for pressing the tetrafluorolip 17 against the support portion 19 when the middle mold 2 and the lower mold 3 are clamped.
As shown in fig. 1 and 3, the middle mold 2 is provided with a containing cavity 21 which is matched with the positioning column 18 and is used for containing the positioning column 18; in this embodiment, the pressing portion 20 surrounds the outer side of the accommodating chamber 21.
As shown in fig. 1 to 4, the upper end of the middle mold 2 is provided with a material cavity 22 with an upward opening, the material cavity 22 is positioned above the glue injection hole 11, and the bottom of the material cavity 22 is communicated with the upper end of the glue injection hole 11;
The lower end part of the upper die 1 is provided with a pressing block 23, and when the upper die 1 and the middle die 2 are closed, the pressing block 23 stretches into the material cavity 22 to press and inject materials in the material cavity 22 into the glue injection annular cavity 10 from the glue injection hole 11.
Specifically, at least two glue injection holes 11 are uniformly distributed along the circumferential direction, and the mold core body 4 is mounted in the lower mold 3 in a sliding manner along the up-down direction.
In summary, the material is injected into the glue injection annular cavity 10 through the glue injection hole 11, the rubber body 12 is obtained after the material is molded in the glue injection annular cavity 10, because the glue injection annular cavity 10 is located at the inner side of the framework 6, the middle die 2 presses the upper end part of the axial frame body 7, and the lower end surface of the radial frame body 8 is pressed on the material supporting part 9, so that the material in the glue injection annular cavity 10 can be sealed to prevent the material from leaking to the outer side wall of the framework 6, and then the rubber body 12 is only connected to the inner side wall of the framework 6 after being molded, and the outer side wall of the framework 6 is exposed, so that an oil seal with the exposed framework 6 is produced, the assembly strength of the oil seal can be improved through the assembly of the framework 6, and the oil seal can be applied to occasions with high rotation speed and high vibration, and is not easy to fall off.
The technical problems, technical solutions and advantageous effects solved by the present utility model have been further described in detail in the above-described embodiments, and it should be understood that the above-described embodiments are only illustrative of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the scope of protection of the present utility model.
Claims (10)
1. The exposed framework type oil seal die is characterized by being used for producing an oil seal and comprising an upper die (1), a middle die (2), a lower die (3), a die core body (4) and a die core head (5);
The oil seal comprises a framework (6), wherein the framework (6) is internally provided with an axial frame body (7) and a radial frame body (8), and the outer periphery of the radial frame body (8) is connected to the lower end part of the axial frame body (7);
The mold core body (4) is arranged in the lower mold (3), and the mold core head (5) is arranged at the upper end part of the mold core body (4);
The framework (6) is used for being placed in the lower die (3) and is positioned outside the die core head (5);
The mold core body (4) is provided with a material supporting part (9) which is used for propping against the lower end surface of the radial frame body (8) so as to support the framework (6);
The upper die (1) is located above the middle die (2), the middle die (2) is located above the lower die (3), when the middle die (2) and the lower die (3) are clamped, the middle die (2) presses down the upper end part of the axial frame body (7) and presses the lower end face of the radial frame body (8) on the material supporting part (9), so that the axial frame body (7), the radial frame body (8), the die core body (4), the die core head (5) and the middle die (2) are surrounded to form a glue injection annular cavity (10) located inside the framework (6);
The middle die (2) is internally provided with a glue injection hole (11), and the lower end part of the glue injection hole (11) is communicated with the glue injection annular cavity (10).
2. The exposed framework type oil seal mold according to claim 1, wherein the material supporting portion (9) is used for supporting the inner peripheral portion of the radial frame body (8), and the lower mold (3) is provided with a step portion (13) for supporting the outer peripheral portion of the radial frame body (8) and a ring wall portion (14) for being matched with the outer side wall of the axial frame body (7) to position the framework (6).
3. The exposed framework type oil seal die according to claim 2, wherein the middle die (2) is provided with a conical part (15) with a large upper part and a small lower part, and the conical part (15) presses down the upper end part of the axial frame body (7) when the middle die (2) and the lower die (3) are clamped, so that the lower end surface of the radial frame body (8) is pressed on the material supporting part (9) and the step part (13).
4. The exposed framework type oil seal mold according to claim 1, characterized in that the glue injection ring cavity (10) comprises a lip cavity portion (16) located between the mold core body (4) and the mold core head (5).
5. The exposed framework type oil seal mold according to claim 1, wherein the oil seal further comprises a tetrafluorolip (17), a center hole is arranged in the center of the tetrafluorolip (17), and the tetrafluorolip (17) is used for being placed on the mold core head (5);
A positioning post (18) for being inserted into the central hole to position the tetrafluorolip (17) is arranged in the mold core head (5);
The mold core (5) is also provided with a bearing part (19) which surrounds the outer side of the positioning column (18) and is used for bearing the inner peripheral part of the tetrafluoro lip (17).
6. The exposed framework type oil seal mold according to claim 5, wherein the middle mold (2) is provided with a pressing portion (20) for pressing the tetrafluorolip (17) against the supporting portion (19) when the middle mold (2) and the lower mold (3) are clamped.
7. The exposed framework type oil seal mold according to claim 5, wherein the middle mold (2) is provided with a containing cavity (21) which is matched with the positioning column (18) and is used for containing the positioning column (18).
8. The exposed framework type oil seal mold according to claim 1, wherein,
The upper end part of the middle die (2) is provided with a material cavity (22) with an upward opening, the material cavity (22) is positioned above the glue injection hole (11), and the bottom of the material cavity (22) is communicated with the upper end part of the glue injection hole (11);
the lower end part of the upper die (1) is provided with a pressing block (23), and when the upper die (1) and the middle die (2) are clamped, the pressing block (23) stretches into the material cavity (22) so as to press and inject materials in the material cavity (22) into the glue injection annular cavity (10) from the glue injection hole (11).
9. The exposed framework type oil seal mold according to claim 8, wherein at least two glue injection holes (11) are uniformly distributed along the circumferential direction.
10. The exposed framework type oil seal mold according to claim 1, wherein the mold core body (4) is slidably mounted in the lower mold (3) in the up-down direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323340723.XU CN221365550U (en) | 2023-12-08 | 2023-12-08 | Exposed framework type oil seal die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323340723.XU CN221365550U (en) | 2023-12-08 | 2023-12-08 | Exposed framework type oil seal die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221365550U true CN221365550U (en) | 2024-07-19 |
Family
ID=91866860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323340723.XU Active CN221365550U (en) | 2023-12-08 | 2023-12-08 | Exposed framework type oil seal die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221365550U (en) |
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2023
- 2023-12-08 CN CN202323340723.XU patent/CN221365550U/en active Active
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