CN102107494A - Double-rubber combined oil seal forming die and forming method thereof - Google Patents
Double-rubber combined oil seal forming die and forming method thereof Download PDFInfo
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- CN102107494A CN102107494A CN2010105809349A CN201010580934A CN102107494A CN 102107494 A CN102107494 A CN 102107494A CN 2010105809349 A CN2010105809349 A CN 2010105809349A CN 201010580934 A CN201010580934 A CN 201010580934A CN 102107494 A CN102107494 A CN 102107494A
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Abstract
The invention relates to a double rubber combined oil seal forming die and a forming method thereof. The double rubber combined oil seal forming die comprises an upper die, a middle die, a lower die, a die core and a rubber pressurized die, wherein, the lower die, the upper die and the middle die are combined so as to form a first rubber cavity in an encircling manner, and the upper die and the die core supported by the lower die are combined so as to form a second rubber cavity in an encircling manner; an oil seal support framework arranged in the first rubber cavity is connected with a rubber sealign rib of the lower die in a supporting manner; the second rubber cavity is shaped in advance and then is arranged inside the second rubber cavity formed on the upper inclined surface of the die core; and after first rubbers are filled in a rubber injection cavity of the upper die the first rubbers are injected to the first rubber cavity by the rubber pressurized die through the rubber injection cavity, a first rubber body is processed through vulcanization shaping and secondary vulcanization according to a conventional rubber vulcanization shaping method. The combined oil seal forming die with the double rubbers and the forming method thereof have the advantages as follows: the operation of the die forming technology is simple, the finished product ratio is high, the oil seal structure that is formed in an injection compressing manner is more compact, and the service life of the oil seal can be prolonged.
Description
Technical field
The present invention relates to a kind of sealing oil sealing mould and forming method thereof, specifically, relate to a kind of pair of building rubber compound oil sealing mould and forming method thereof.
Background technology
Traditional sealing oil sealing is that rubber oil sea only uses a kind of rubber, its mould-forming process is simple relatively, but along with automobile develops to high speed and the strong contour aspect of performance of bearing capacity, sealing property to oil sealing requires higher, require the oil sealing price all to want the range of price decrease more than 15% every year simultaneously, and the elastomeric material price constantly raises, and faces market price competition.High-speed oil seal must have and bears day by day harsh high speed, hot environment, and will adapt to service conditions such as automobile overload, transportation environment be abominable.In order to improve the competitiveness in oil sealing market, sealing reliability, reduce slip, improve service life, have only high-speed oil seal mould and the forming method of considering two kinds of different elastomeric materials, the place adopts better encapsulant at the main lip of sealing, use lower but do not influence the another kind of elastomeric material of sealing property than seal lip elastomeric material price at other position, so, be necessary applying working condition according to automobile reality, primary study combines the structural design of two kinds of rubber process and mould, has further promoted product quality, reduces cost, make its more reliable performance, adaptive capacity is stronger, and service life is higher, the mould and the forming method of the sealing oil sealing that expense is lower after sale.
Summary of the invention
The objective of the invention is at above-mentioned existing problems, the oil enveloping structure of provide that a kind of mould-forming process is simple to operate, yield rate is high, annotating the moulding of pressure mode is more closely knit, help prolonging the two building rubber compound oil sealing moulds and the forming method thereof in the service life of oil sealing.
The mould of the realization of purpose of the present invention, comprise patrix, middle mould, counterdie, core rod and moulding mould, patrix is provided with glue injection cavities, the moulding mould is arranged at the glue injection cavities upside, counterdie is provided with the sealing muscle, gone along with sb. to guard him by matched moulds between counterdie, patrix and the middle mould and to constitute the first rubber die cavity, the oil sealing support frame that installs at the first rubber die cavity is by the sealing muscle support and connection of counterdie, and core rod of being established by the counterdie support and Ccope closing machine are gone along with sb. to guard him and constituted the second rubber die cavity; The second rubber die cavity has the main lip die cavity that the lower surface matched moulds of the inclined-plane, upper end of core rod and counterdie is gone along with sb. to guard him formation, and the second rubber die cavity has the secondary lip die cavity that the side inclined-plane matched moulds of the upper surface of counterdie and core rod is gone along with sb. to guard him formation.
It is that 0.02 ~ 0.15mm, spiral angle are the return wires of 15 ~ 30 degree that mould of the present invention, the inclined-plane, upper end of core rod are provided with the degree of depth, and the structure of return wire is linearly constituted by waveform, wedge angle waveform, spirality or splayed are one kind of.
The forming method of the realization of purpose of the present invention comprises:
1), the oil sealing support frame is arranged in the first rubber die cavity, is arranged in after second rubber bodies is finalized the design in advance in the second rubber die cavity on the inclined-plane, upper end of core rod, counterdie closes matched moulds;
2), after the glue injection cavities of patrix inserts first rubber, by glue injection cavities first rubber is injected the first rubber die cavity by the moulding mould, vulcanization of rubber method for shaping vulcanizes typing and post-cure to first rubber bodies of injecting routinely.
Forming method of the present invention, second rubber bodies are the hydrogenated nitrile-butadiene rubber body, and first rubber bodies is the acrylonitrile-butadiene rubber body that is coated on the external cylindrical surface of oil sealing support frame.
Two building rubber compound oil sealings of mould moulding of the present invention:
1), based on hydrogenated nitrile-butadiene rubber HNBR material, filled polytetrafluoroethylene PTFE and carbon fiber CF material in rubber, by the optimization of C technology, make and to have that coefficient of friction is lower, anti-wear performance is stronger, the enhancement mode hydrogenated nitrile-butadiene rubber that tear resistance is higher;
2), the sealing of oil sealing cylindrical is adopted as acrylonitrile-butadiene rubber and coats skeleton as the O-ring cylinder;
3), utilize aerodynamics and fluid dynamic pump to inhale principle, adopt the oil-recovery tank structure to keep sealing effectiveness.
Two building rubber compound oil sealings of mould moulding of the present invention have following advantage:
1), improve Assembling Production efficient 20%, originally main engine plants adopt and expose outside framework oil seal, need before press-fiting beat to seal glue;
2), two building rubber compound oil sealing cylindrical supporting surface is rubber-coated, the leakage that produces when reducing the vibration of automobilism;
3), oil sealing installs easily, reduce to expose the outside framework oil seal cylindrical and scratch and leak;
4), existing cold-resistant advantage, resistant to elevated temperatures characteristics are arranged again, can satisfy the weather requirement of different regions, country variant, the product adaptation ability and the sealing supportability stronger;
5), reduce the coefficient of friction of hydrogenated nitrile-butadiene rubber, improve the tear-resistant performance of hydrogenated nitrile-butadiene rubber under hot conditions, strengthen the reliability of oil sealing sealing, improve service life;
6), annotate anti-wear performance and media-resistant grade that the pressure mode improves hydrogenated nitrile-butadiene rubber, thereby the service life of improving oil sealing.
The present invention, owing to adopt two building rubber compound oil sealing moulds, can either strengthen the original good seal performance of oil sealing, also can reduce production costs, the oil sealing cylindrical of the external seal end of using under high speed situation simultaneously need not played close glue, reduce main engine plants' assembly process, can eliminate the influence to oil seal lip work such as vibration again; Also reduce oil sealing the influence of tilting may cause oil sealing to leak is installed.Service life of the present invention is considerably beyond previously used various oil sealing, is to improve the automobile oil seal sealing property at present, prolong oil sealing a kind of better products in service life.
The present invention, the method for two building rubber compound oil sealing mould moulding oil sealings, technological operation is simple, the yield rate height, it annotates the moulding of pressure mode, common relatively press moulding mode moulding, its oil enveloping structure is more closely knit, helps prolonging the service life of oil sealing.
The present invention, the oil enveloping structure of have that mould-forming process is simple to operate, yield rate is high, annotating the moulding of pressure mode is more closely knit, help prolonging the advantage in the service life of oil sealing.
The present invention is further illustrated in conjunction with the accompanying drawings for following embodiment.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the present of invention;
Fig. 2 is the structural representation of two building rubber compound oil sealings of the mould moulding of Fig. 1 embodiment.
Among the figure, 1, patrix; 2, middle mould; 3, counterdie; 4, core rod; 5, moulding mould; 6, glue injection cavities; 7, sealing muscle; 8, the first rubber die cavity; 9, oil sealing support frame; 10, the second rubber die cavity; 11, main lip die cavity; 12, secondary lip die cavity; 13, hydrogenated nitrile-butadiene rubber body; 14, acrylonitrile-butadiene rubber body; 15, return wire.
The specific embodiment
A kind of pair of building rubber compound oil sealing mould, with reference to Fig. 1, comprise patrix 1, middle mould 2, counterdie 3, core rod 4 and moulding mould 5, patrix is provided with glue injection cavities 6, the moulding mould is arranged at the glue injection cavities upside, and counterdie is provided with sealing muscle 7, is gone along with sb. to guard him by matched moulds between counterdie, patrix and the middle mould to constitute the first rubber die cavity 8, the oil sealing support frame 9 that installs at the first rubber die cavity is by the sealing muscle support and connection of counterdie, and core rod of being established by the counterdie support and Ccope closing machine are gone along with sb. to guard him and constituted the second rubber die cavity 10; Main lip die cavity 11, the second rubber die cavities that the lower surface matched moulds that the second rubber die cavity has the inclined-plane, upper end of core rod and a counterdie is gone along with sb. to guard him formation have the secondary lip die cavity 12 that the side inclined-plane matched moulds of the upper surface of counterdie and core rod is gone along with sb. to guard him formation; It is that 0.02 ~ 0.15mm, spiral angle are the return wires 15 of 15 ~ 30 degree that the inclined-plane, upper end of core rod is provided with the degree of depth, and the structure of return wire is linearly constituted by waveform, wedge angle waveform, spirality or splayed are one kind of.
The forming method of the two building rubber compound oil sealings of a kind of pair of building rubber compound oil sealing mould moulding, with reference to Fig. 1, comprise that patrix 1, middle mould 2, counterdie 3, core rod 4 and moulding mould 5 constitute two building rubber compound oil sealing moulds, patrix is provided with glue injection cavities 6, the moulding mould is arranged at the glue injection cavities upside, counterdie is provided with sealing muscle 7, go along with sb. to guard him by matched moulds between counterdie, patrix and the middle mould and to constitute the first rubber die cavity 8, the oil sealing support frame 9 that installs at the first rubber die cavity is by the sealing muscle support and connection of counterdie, and core rod of being established by the counterdie support and Ccope closing machine are gone along with sb. to guard him and constituted the second rubber die cavity 10; Main lip die cavity 11, the second rubber die cavities that the lower surface matched moulds that the second rubber die cavity has the inclined-plane, upper end of core rod and a counterdie is gone along with sb. to guard him formation have the secondary lip die cavity 12 that the side inclined-plane matched moulds of the upper surface of counterdie and core rod is gone along with sb. to guard him formation; It is that 0.02 ~ 0.15mm, spiral angle are the return wires 15 of 15 ~ 30 degree that the inclined-plane, upper end of core rod is provided with the degree of depth, and the structure of return wire is linearly constituted by waveform, wedge angle waveform, spirality or splayed are one kind of.
During moulding, oil sealing support frame 9 is arranged in the first rubber die cavity 8, and second rubber bodies is that counterdie 3 closes matched moulds in the second rubber die cavity 10 that is arranged in after hydrogenated nitrile-butadiene rubber body 13 is finalized the design in advance on the inclined-plane, upper end of core rod; After the glue injection cavities 6 of patrix is inserted first rubber, by glue injection cavities 6 first rubber is injected the first rubber die cavity 8 by moulding mould 5, vulcanization of rubber method for shaping is that acrylonitrile-butadiene rubber body 14 vulcanizes typing and post-cure to first rubber bodies of injecting routinely; Finally obtain the shaped article of Fig. 2.
Claims (4)
1. two building rubber compound oil sealing mould, it is characterized in that: comprise patrix (1), middle mould (2), counterdie (3), core rod (4) and moulding mould (5), described patrix is provided with glue injection cavities (6), described moulding mould is arranged at the glue injection cavities upside, described counterdie is provided with sealing muscle (7), by counterdie, matched moulds is gone along with sb. to guard him and is constituted the first rubber die cavity (8) between patrix and the middle mould, the oil sealing support frame (9) that installs at the first rubber die cavity is by the sealing muscle support and connection of described counterdie, and core rod of being established by the counterdie support and described Ccope closing machine are gone along with sb. to guard him and constituted the second rubber die cavity (10); The described second rubber die cavity has the main lip die cavity (11) that the lower surface matched moulds of the inclined-plane, upper end of core rod and counterdie is gone along with sb. to guard him formation, and the described second rubber die cavity has the secondary lip die cavity (12) that the side inclined-plane matched moulds of the upper surface of counterdie and core rod is gone along with sb. to guard him formation.
2. according to claim 1 pair of building rubber compound oil sealing mould, it is characterized in that: it is that 0.02 ~ 0.15mm, spiral angle are the return wires (15) of 15 ~ 30 degree that the inclined-plane, upper end of described core rod is provided with the degree of depth, and the structure of described return wire is linearly constituted by waveform, wedge angle waveform, spirality or splayed are one kind of.
3. the forming method of the two building rubber compound oil sealings of the mould moulding of adopting claim 1 or 2 is characterized in that:
1), oil sealing support frame (9) is arranged in the first rubber die cavity (8), is arranged in after second rubber bodies is finalized the design in advance in the second rubber die cavity (10) on the inclined-plane, upper end of core rod, counterdie (3) closes matched moulds;
2) after, the glue injection cavities of patrix (6) is inserted first rubber, by glue injection cavities (6) first rubber is injected the first rubber die cavity (8) by moulding mould (5), vulcanization of rubber method for shaping vulcanizes typing and post-cure to first rubber bodies of injecting routinely.
4. the forming method of according to claim 3 pair of building rubber compound oil sealing, it is characterized in that: described second rubber bodies is hydrogenated nitrile-butadiene rubber body (13), and described first rubber bodies is the acrylonitrile-butadiene rubber body (14) that is coated on the external cylindrical surface of oil sealing support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105809349A CN102107494A (en) | 2010-12-09 | 2010-12-09 | Double-rubber combined oil seal forming die and forming method thereof |
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| CN2010105809349A CN102107494A (en) | 2010-12-09 | 2010-12-09 | Double-rubber combined oil seal forming die and forming method thereof |
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| CN102107494A true CN102107494A (en) | 2011-06-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357956A (en) * | 2011-10-27 | 2012-02-22 | 揭阳市天诚密封件有限公司 | Vulcanizing method of multifunctional hub oil seal |
| CN104786436A (en) * | 2015-04-30 | 2015-07-22 | 南京金三力橡塑有限公司 | Processing mold and method of stainless combined washer |
| CN105729723A (en) * | 2016-04-08 | 2016-07-06 | 泰德兴精密电子（昆山）有限公司 | Silica gel sealing process for liquid silica gel injection mold |
| CN105922487A (en) * | 2016-05-13 | 2016-09-07 | 青岛开世密封工业有限公司 | Mold for forming two kinds of rubber simultaneously and using method thereof |
| CN108973030A (en) * | 2018-09-28 | 2018-12-11 | 安徽宁国中鼎模具制造有限公司 | A kind of modified oil sealing class mold |
| CN110128725A (en) * | 2019-04-24 | 2019-08-16 | 四川新为橡塑有限公司 | The rubber compounding and its production mould and manufacturing method of a kind of rotary rubber core |
| CN112092269A (en) * | 2020-08-06 | 2020-12-18 | 广东亿达汽车密封件股份有限公司 | Double-color rubber oil seal mold |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357956A (en) * | 2011-10-27 | 2012-02-22 | 揭阳市天诚密封件有限公司 | Vulcanizing method of multifunctional hub oil seal |
| CN102357956B (en) * | 2011-10-27 | 2013-09-04 | 揭阳市天诚密封件有限公司 | Vulcanizing method of multifunctional hub oil seal |
| CN104786436A (en) * | 2015-04-30 | 2015-07-22 | 南京金三力橡塑有限公司 | Processing mold and method of stainless combined washer |
| CN105729723A (en) * | 2016-04-08 | 2016-07-06 | 泰德兴精密电子（昆山）有限公司 | Silica gel sealing process for liquid silica gel injection mold |
| CN105922487A (en) * | 2016-05-13 | 2016-09-07 | 青岛开世密封工业有限公司 | Mold for forming two kinds of rubber simultaneously and using method thereof |
| CN108973030A (en) * | 2018-09-28 | 2018-12-11 | 安徽宁国中鼎模具制造有限公司 | A kind of modified oil sealing class mold |
| CN108973030B (en) * | 2018-09-28 | 2023-09-15 | 安徽宁国中鼎模具制造有限公司 | Improved oil seal mold |
| CN110128725A (en) * | 2019-04-24 | 2019-08-16 | 四川新为橡塑有限公司 | The rubber compounding and its production mould and manufacturing method of a kind of rotary rubber core |
| CN112092269A (en) * | 2020-08-06 | 2020-12-18 | 广东亿达汽车密封件股份有限公司 | Double-color rubber oil seal mold |
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Application publication date: 20110629 |