CN101817214B - Rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold - Google Patents
Rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold Download PDFInfo
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- CN101817214B CN101817214B CN201010156592.8A CN201010156592A CN101817214B CN 101817214 B CN101817214 B CN 101817214B CN 201010156592 A CN201010156592 A CN 201010156592A CN 101817214 B CN101817214 B CN 101817214B
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Abstract
The invention relates to a rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold composed of a lower mold plate, a lower mold core, an upper mold core and a mold sleeve, wherein the lower mold core is fixedly arranged on the lower mold plate; the mold sleeve is fixedly arranged on the lower mold plate; the upper mold core is positioned above the lower mold core and the mold sleeve; the upper mold core is matched with the mold sleeve through a positioning spigot; the upper end face of the upper mold core is evenly provided with 3-6 rubber injection holes on the same circumference; and the outer cylindrical surface of the lower mold core is circumferentially and evenly provided with a containing groove. The framework deviation-resisting compacting mold can overcome the defect of metal framework deviation of the framework oil seal in the compacting process, and enhances the working accuracy and the service life of the framework oil seal.
Description
Technical field:
The present invention relates to a kind of rubber seal compacting tool set, particularly relate to axle outside framework oil seal compacting tool set.
Background technology:
Skeleton axle oil envelope is a kind of use potted component extremely widely, and it can be isolated between the parts needing in drive disk assembly to lubricate and power output shaft, does not allow oil seepage out.
Existing axle backbone sealing ring as shown in Figure 1, it is made up of sizing material outer ring 1, metallic framework 2, pressuring spring 3, sizing material connection shoulder 4, sizing material inner ring 5, the cross sectional shape of metallic framework 2 is anti-" 7 " shape, metallic framework 2 is embedded in sizing material outer ring 1 and is connected with sizing material in shoulder 4, connects sizing material inner ring 5; Be provided with secondary lip seal band 6, secondary lip distortion cavity volume 7 in the upper end of sizing material inner ring 5, be provided with main lip seal band 8 and main lip distortion cavity volume 9 in the lower end of sizing material inner ring 5, pressuring spring 3 is arranged on main lip seal band 8.The axle backbone sealing ring of this structure all must use compacting tool set in process of production, the molding of existing skeleton oil pressure is made up of lower bolster 11, lower mold core 12, upper mold core 13 and die sleeve 14, lower mold core 12 is fixedly mounted on lower bolster 11, die sleeve 14 is fixedly mounted on lower bolster 11, upper mold core 13 is positioned at the top of lower mold core 12 and die sleeve 14, upper mold core 13 is coordinated with die sleeve 14 by positioning spigot, guarantee the correctness of lower mold core 12, upper mold core 13 and die sleeve 14 relative position, form the oil sealing die cavity 15 identical with outside framework oil seal cross sectional shape to be pressed.
In production pressing process, first metallic framework 2 must accurately be put into oil sealing die cavity 15, then from the hole for injecting glue 16 upper mold core 13, inject sizing material compacting, obtain the semi-finished product of outside framework oil seal, by follow-up scarfing, prune operation the finished product of outside framework oil seal.In the pressing process of outside framework oil seal, the precision of metallic framework 2 putting position in oil sealing die cavity 15 is very large on the impact of outside framework oil seal finished product accuracy, at present, metallic framework 2 and lower mold core 12 excircle orientation mode are determined the putting position of metallic framework 2 in oil sealing die cavity 15 by usual employing, because metallic framework 2 and lower mold core 12 cylindrical unavoidably exist mismachining tolerance adding man-hour, and must fit clearance be left between metallic framework 2 and lower mold core 12 cylindrical, according to existing injecting glue mode, sizing material is when from the hole for injecting glue 16 upper mold core 13, monolateral pressurization is injected, will inevitably oppress metallic framework 2 to while skew, if fit clearance is excessive between metallic framework 2 and lower mold core 12 cylindrical, then can change metallic framework 2 position in oil sealing die cavity 15, metallic framework 2 is made to produce skew in oil sealing die cavity 15.Due to outside framework oil seal scarfing after pressing, pruning operation is all locate with the external diameter of oil sealing, most sizes of outside framework oil seal are all relevant with the outer-diameter accuracy of oil sealing, when amount of bias is excessive in oil sealing for metallic framework, the circularity of oil-seal outer and cylindricity all can be overproof, cause the secondary lip seal band 6 of oil sealing inner ring, main lip seal band 8 and oil sealing external diameter disalignment, lose the outside framework oil seal of circle when assembling, secondary lip seal band 6 can be caused and between main lip seal band 8 and rotating shaft magnitude of interference side little, opposite side is large, the contact width of the side sealing lip that the magnitude of interference is little and axle increases, contact and frictional force increase, result causes lip wear and tear and burn because of the run-up of frictional heat, cause serious leak.The main cause producing above-mentioned defect is the compacting tool set unreasonable structure of outside framework oil seal, can not effectively solve metallic framework offset problem in pressing process.
Summary of the invention:
The object of this invention is to provide a kind of rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold, it can eliminate outside framework oil seal metallic framework skew defect in pressing process, thus improve the machining accuracy of outside framework oil seal, the external diameter that significantly can reduce outside framework oil seal loses circle, external diameter and internal diameter disalignment defect.
The technical scheme that the present invention takes is as follows:
A kind of rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold, by lower bolster, lower mold core, upper mold core and die sleeve composition, lower mold core is fixedly mounted on lower bolster, die sleeve is fixedly mounted on lower bolster, upper mold core is positioned at the top of lower mold core and die sleeve, upper mold core is coordinated with die sleeve by positioning spigot, guarantee lower mold core, the correctness of upper mold core and die sleeve relative position, form the oil sealing die cavity identical with outside framework oil seal cross sectional shape to be pressed, it is characterized in that, 3 ~ 6 hole for injecting glue are circumferentially provided with equably the same of the upper surface of upper mold core, all hole for injecting glue and oil sealing die cavity interlink.
Further, the outer cylinder surface of lower mold core circumferentially offers containing groove equably.
Because the same of the upper surface in upper mold core is circumferentially provided with 3 ~ 6 hole for injecting glue equably, all hole for injecting glue and oil sealing die cavity interlink, all hole for injecting glue are all connected with band moulding source, making a concerted effort of the external force that metallic framework just can be made like this when pressure injection sizing material to be subject to is zero, can stop the skew defect of metallic framework in pressing process; The outer cylinder surface of lower mold core circumferentially offers many pieces equably and contains groove, can on the medial surface of metallic framework the rubber strip of coated some evaginations equably, after so just reducing outside framework oil seal compacting, cause the distortion of outside framework oil seal because there is pressure differential inside and outside metallic framework.Had this skeleton resisting compacting mold, just can produce high accuracy lip backbone sealing ring, it is specially adapted to the sealing of rotating shaft, and long service life.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of lip outside framework oil seal;
Fig. 2 is the structural representation of existing mold for pressing;
Fig. 3 is that in Fig. 2, in upper mold core, hole for injecting glue offers position view;
Fig. 4 is that in the upper mold core in the present invention, hole for injecting glue offers position view;
Fig. 5 contains the distribution schematic diagram of groove on the outer cylinder surface of lower mold core.
In figure, 1-sizing material outer ring; 2-metallic framework; 3-pressuring spring; 4-sizing material connects shoulder; 5-sizing material inner ring; The secondary lip seal band of 6-; 7-secondary lip distortion cavity volume; The main lip seal band of 8-; 9-main lip distortion cavity volume; 11-lower bolster; 12-lower mold core; 13-upper mold core; 14-die sleeve; 15-oil sealing die cavity; 16-hole for injecting glue; 17-contains groove.
Detailed description of the invention:
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:
A kind of rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold, by lower bolster 11, lower mold core 12, upper mold core 13 and die sleeve 14 form, lower mold core 12 fixedly mounts on lower bolster 11, die sleeve 14 is positioningly fixedly mounted on lower bolster 11, upper mold core 13 is positioned at the top of lower mold core 12 and die sleeve 14, upper mold core 13 is coordinated with die sleeve 14 by positioning spigot, guarantee lower mold core 12, the correctness of upper mold core 13 and die sleeve 14 relative position, form the oil sealing die cavity 15 identical with outside framework oil seal cross sectional shape to be pressed, three hole for injecting glue 16 are circumferentially provided with equably the same of the upper surface of upper mold core 13, three hole for injecting glue 16 all interlink with oil sealing die cavity 15, the outer cylinder surface of lower mold core 12 circumferentially offers the six roots of sensation equably and contains groove 17.
Claims (2)
1. a rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold, it is by lower bolster (11), lower mold core (12), upper mold core (13) and die sleeve (14) composition, lower mold core (12) is fixedly mounted on lower bolster (11), die sleeve (14) is fixedly mounted on lower bolster (11), upper mold core (13) is positioned at the top of lower mold core (12) and die sleeve (14), upper mold core (13) is coordinated with die sleeve (14) by positioning spigot, guarantee lower mold core (12), the correctness of upper mold core (13) and die sleeve (14) relative position, form the oil sealing die cavity (15) identical with outside framework oil seal cross sectional shape to be pressed, it is characterized in that: be circumferentially provided with 3 ~ 6 hole for injecting glue (16) equably the same of the upper surface of upper mold core (13), all hole for injecting glue (16) and oil sealing die cavity (15) interlink.
2. rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold according to claim 1, is characterized in that: circumferentially offer equably on the outer cylinder surface of lower mold core (12) and contain groove (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010156592.8A CN101817214B (en) | 2010-04-27 | 2010-04-27 | Rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010156592.8A CN101817214B (en) | 2010-04-27 | 2010-04-27 | Rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold |
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| Publication Number | Publication Date |
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| CN101817214A CN101817214A (en) | 2010-09-01 |
| CN101817214B true CN101817214B (en) | 2015-04-08 |
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| CN201010156592.8A Active CN101817214B (en) | 2010-04-27 | 2010-04-27 | Rotating-shaft lip-shaped seal ring framework deviation-resisting compacting mold |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102173023A (en) * | 2011-01-08 | 2011-09-07 | 山东莱阳市昌誉密封产品有限公司 | One-time compression molding method of modified polytetrafluoroethylene oil seal and special mold thereof |
| CN109723820B (en) * | 2019-01-22 | 2024-03-29 | 石家庄贝克密封科技股份有限公司 | Skeleton rubber sealing ring and production die thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201685397U (en) * | 2010-04-27 | 2010-12-29 | 常州朗博汽车零部件有限公司 | Framework deviation-preventing pressing die for rotary shaft lip-shaped sealing rings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4830711B2 (en) * | 2006-08-11 | 2011-12-07 | パナソニック電工株式会社 | Multi-cavity insert molding equipment |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201685397U (en) * | 2010-04-27 | 2010-12-29 | 常州朗博汽车零部件有限公司 | Framework deviation-preventing pressing die for rotary shaft lip-shaped sealing rings |
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Address after: 213200 Jiangsu Province, Changzhou city Jintan District Yao Tang Jie Dao Jin Bo Road, No. 1 Patentee after: Changzhou Langbo Auto Parts Co.,Ltd. Address before: 213200 No. 216, Hua Cheng Road, Jintan, Jiangsu Patentee before: Changzhou Longbo Auto Parts Co., Ltd. |