CN102563080A - Y-shaped rubber dynamic sealing ring with long and short lips for unilateral sealing and sectional vulcanization process for sealing ring - Google Patents
Y-shaped rubber dynamic sealing ring with long and short lips for unilateral sealing and sectional vulcanization process for sealing ring Download PDFInfo
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- CN102563080A CN102563080A CN2012100016227A CN201210001622A CN102563080A CN 102563080 A CN102563080 A CN 102563080A CN 2012100016227 A CN2012100016227 A CN 2012100016227A CN 201210001622 A CN201210001622 A CN 201210001622A CN 102563080 A CN102563080 A CN 102563080A
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Abstract
The invention relates to a Y-shaped rubber dynamic sealing ring with long and short lips for unilateral sealing and a sectional vulcanization process for the sealing ring. A V-shaped groove is formed between an inner sealing lip and an outer sealing lip, the inner sealing lip is shorter than the outer sealing lip, the height difference between the inner sealing lip and the outer sealing lip ranges from 1.5mm to 3.5mm, the outer sealing lip functions in sealing while the inner sealing lip does not function in sealing under the action of deformation pressing force, unilateral sealing is realized, and the inner sealing lip functions in storing lubricating greases. The process includes the steps: extruding mixed rubber into a straight-bar rubber blank through a rubber extruder, setting a vulcanization starting point and a vulcanization finishing point for sectional vulcanization on a machining section according to the widths of vulcanization moulds and a hot press table top during vulcanization by using the two vulcanization moulds and a rubber plate vulcanization hot press matched with the table top, wherein Y-shaped sections of mould cavities of the vulcanization moulds are the same in shape and different in length; ensuring non-defective link and transition of rubber, semi-vulcanized rubber and vulcanized rubber in previous mould stripping, next mould feeding and mould closing during vulcanization; and performing vulcanization after ensuring the rubber to enter the moulds at end connection ring positions, and ensuring the strength and the appearance of a joint to be no different from other positions.
Description
Technical field
The present invention relates to a kind of dynamic seal ring, relate in particular to the Y type rubber movable seal ring and the step up cure technology thereof of the monolateral sealing of a kind of length lip.
Background technique
Y type rubber seal is adopted in the motive sealing of general bearing more, the Y type rubber seal of present Chang Shiyong, and its inside and outside sealing lip structure is identical; Under the effect of distortion impacting force; Seal ring tightly holds bearing surface, produces the gas vacuum suction in the chamber of double density edge sealing, and frictional force receives the influence of vacuum adsorption force will be far longer than the effect of distortion impacting force; The bearing operation damping is excessive, and kinetic force of friction also can increase.Seal ring is not long working life, damages easily to cause seal failure, and when therefore in long-term operation, using the y-type seal ring of this structure, seal ring is very easy to wearing and tearing, and sealing effect is poor, and needs periodic replacement, also increases the user cost of seal ring.
Existing technology to the rubber seal sulfuration to be adopted not sulfuration rubber seal ring with extruding and moulding to be enclosed within on the core to finalize the design, and will not vulcanize seal ring then and places together with core and carry out whole vulcanizing treatment in the hot vulcanization groove.This traditional vulcanization process technology is simple; High working efficiency; But the rubber seal of heavy caliber complicated shape is carried out the integral body sulfuration not only increased cost of production widely; This is because need corresponding major diameter core and external mold, has increased core and external mold consumable quantity and processing charges and difficulty of processing.The complex-shaped seal ring of pair cross-section simultaneously, its dimension precision requirement is high, must hot-press vulcanization moulding in the mould of precision, traditional sulfuration process is difficult to meet the demands, and is unfavorable for reducing cost.
Summary of the invention
The objective of the invention is to overcome the double-sealing lockjaw that has the existence of Y type rubber movable seal ring now and tightly hold bearing surface; Produce the gas vacuum suction in the chamber; Kinetic force of friction and the defective that the running damping increases provide the Y type rubber movable seal ring of the monolateral sealing of the improved length lip of a kind of structure, not only realize the reliable hermetic seal protection to bearing; Avoid salt spray corrosion, corrosive wear, seawater immersion, toxic and harmful to penetrate bearing inside; Keep bearing operation flexible simultaneously, reduce the wearing and tearing with bearing, prolonged the working life of seal ring.To the complicated rubber seal of above-mentioned heavy caliber, sectional shape carry out that vulcanizing treatment needs that corresponding major diameter core and external mold, processing charges are high, big this is not enough and a kind of technology of step up cure Y type rubber seal is provided for difficulty.
For achieving the above object, the present invention takes following technical proposals to realize:
Y type rubber seal is used in a kind of motive sealing, and the seal ring cross section is a Y shape, form v-depression between inside and outside two sealing lips, and the length of interior sealing lip is shorter than outer seal lip, and inner and outer sealing lip height difference is: 1.5mm～3.5mm.
Among the present invention, under the effect of distortion impacting force, outer seal lip seals, and interior sealing lip does not then seal, and realizes monolateral sealing, and simultaneously interior sealing lip works the ester effect of hiding.
The step up cure technology of the Y type rubber movable seal ring of the monolateral sealing of above-mentioned length lip is following:
Elastomeric compound is extruded the vertical bar shaped rubber base of (Y type) through Rubber Extruder; The vulcanization die that utilizes two cover die cavity Y type sectional shape is identical, length is different and the rubber plate vulcanization hotpress of supporting table top; According to the width of vulcanization die and hotpress table top, starting point and the terminal point of on processing sections, setting out sulfuration carry out step up cure in sulfidation.
Based on mould machining technique feasibility, confirm to take the whole machined earlier of two molds, block into two molds different in size again, use respectively.So not only guarantee the conformity of both sectional shape sizes, add man-hour, can not cause the variation of goods sectional shape size when same seal ring is used alternatingly this two molds sulfuration.Preceding depanning in the sulfidation, a back progressive die and matched moulds all will guarantee rubber, semi-cure and the zero defect linking and the transition of vulcanizate.Termination lopping position guarantees to vulcanize after rubber is gone into the mould butt joint again, guarantees joint strength, outward appearance and other position indifference.This kind step up cure technology is applicable to that bore is: the Y type rubber seal of Φ 600mm～10000mm prepares, and vulcanizes long die length and is: 1000mm～17000mm, short die length is: 800mm～1500mm.
Concrete step up cure technological operation step is: (the bore scope is: Φ 600mm～10000mm) designs a mould to the Y type rubber movable seal ring bore of processing as requested; Whole machining earlier; Block into two molds different in size again; The length range of long mould is: 1000mm～17000mm, the length range of short mould is: 800mm～1500mm.Adopt unified sulfuration process parameter in the step up cure process, the Y type rubber material base that extruder is extruded is put in the mould, places on the rubber plate vulcanization machine, and cure time is 3～60 minutes, and sulfurize temperature is 150～180 ℃.Initial first cure adopts long Mould Machining; One section from rubber base band begins sulfuration; The rubber base of 150mm～500mm is reserved in the port, and long mould is positioned at the outer part of heat of vulcanization platen table top, and (length range is: 200mm～600mm) adopt water cooling plant to cool off.After first section sulfuration accomplished, occur rubber, semi-cure transition zone, complete cure district, semi-cure transition zone, the such join domain of rubber on the rubber base band, semi-cure length of transition zone scope is: 50mm～200mm.In back to back second section sulfidation; Rubber base band left end semi-cure transition zone position turned left from the right side move into press table top 500mm～1600mm (moving into length range confirms according to the length of semi-cure transition zone the actual production); Make the complete cure district of post-cure cover the semi-cure transition zone of last time fully; Guarantee rubber, semi-cure and the zero defect linking and the transition (specifically illustrating as shown in Figure 2) of vulcanizate, carry out second section sulfuration.With the method, progressively staged operation, up to unsintered tape residue 150mm～500mm, sulfuration process at last is terminated.Short mould is adopted in the termination sulfuration, guarantees that end interface is that rubber links rubber, could guarantee the quality of end interface like this, sulfuration back and other part indifferences.As shown in Figure 2, the length of short mould is vulcanized than the also long 200mm～700mm of summation in two ends rubber part and semi-cure zone again, thereby guarantees joint strength, outward appearance and other position indifference.
The present invention program's beneficial effect is: under the effect of distortion impacting force; Monolateral sealing not only realizes the reliable hermetic seal protection to bearing, avoids salt spray corrosion, corrosive wear, seawater immersion, toxic and harmful to penetrate bearing inside, avoids seal ring tightly to hold bearing surface simultaneously; Produce the gas vacuum suction in the chamber of double density edge sealing; Thereby reduce the increase of kinetic force of friction and running damping, keep bearing operation flexible, reduce the wearing and tearing of seal ring and bearing; Prolong seal ring working life, reduce and change number of times and user cost.Interior sealing lip works the ester effect of hiding, and lubricating grease is excessive in the prevention double-sealing lip chamber.Adopting the straight line type mould that above-mentioned heavy caliber, the complicated rubber seal of sectional shape are carried out step up cure handles; Not only solve heavy caliber seal ring vulcanizing treatment and needed corresponding this deficiency of major diameter core; Practiced thrift cost, and this method is applicable to the vulcanizing treatment of the more complicated rubber seal of sectional shape, Stamping Steel Ribbon fully.
Description of drawings
Fig. 1 is the structural representation of the Y type rubber movable seal ring of the monolateral sealing of length lip of the present invention.
Fig. 2 is a Y type rubber movable seal ring step up cure technological operation schematic representation of the present invention.
Embodiment
The preferred embodiments of the present invention accompanying drawings is following:
Embodiment one:
Referring to Fig. 1; The Y type rubber movable seal ring of the monolateral sealing of this length lip is characterized in that: the seal ring cross section is a Y shape, forms v-depression between inside and outside two sealing lips; And the length of interior sealing lip is shorter than outer seal lip, and inner and outer sealing lip height difference is: 1.5mm～3.5mm; Under the effect of distortion impacting force, outer seal lip seals, and interior sealing lip does not then seal, and realizes monolateral sealing, and simultaneously interior sealing lip plays storage lubricating grease.
Embodiment two:
Referring to Fig. 2; The step up cure technology of the Y type rubber movable seal ring of the monolateral sealing of this length lip; It is characterized in that technological process is: elastomeric compound is extruded into vertical bar shaped rubber base through Rubber Extruder; The vulcanization die that utilizes two cover die cavity Y type sectional shape is identical, length is different and the rubber plate vulcanization hotpress of supporting table top, according to the width of vulcanization die and hotpress table top, starting point and the terminal point of on processing sections, setting out sulfuration carry out step up cure in sulfidation; Preceding depanning in the sulfidation, a back progressive die and matched moulds all will guarantee rubber, semi-cure and the zero defect linking and the transition of vulcanizate; Termination lopping position guarantees to vulcanize after rubber is gone into the mould butt joint again, guarantees joint strength, outward appearance and other position indifference.
Embodiment three:
Referring to Fig. 2; The step up cure technology specific operation step of the Y type rubber movable seal ring of the monolateral sealing of this length lip is following: (bore is the Y type rubber movable seal ring bore of processing: Φ 1000mm) design a mould as requested; Whole machining earlier; Block into two molds different in size again, the length range of long mould is: 1200mm, the length range of short mould is: 1000mm.Adopt unified sulfuration process parameter in the step up cure process, the Y type rubber material base that extruder is extruded is put in the mould, places on the rubber plate vulcanization machine, and cure time is 10 minutes, and sulfurize temperature is 150 ℃.Initial first cure adopts long Mould Machining, begins sulfuration from a section of rubber base band, and the rubber base of 150mm is reserved in the port, and long mould is positioned at the outer part of heat of vulcanization platen table top, and (length is: 200mm) adopt water cooling plant to cool off.After first section sulfuration accomplished, occur rubber, semi-cure transition zone, complete cure district, semi-cure transition zone, the such join domain of rubber on the rubber base band, the semi-cure length of transition zone is 50mm.In back to back second section sulfidation; Rubber base band left end semi-cure transition zone position turned left from the right side move into press table top 500mm; Make the complete cure district of post-cure cover the semi-cure transition zone of last time fully; Guarantee rubber, semi-cure and the zero defect linking and the transition (specifically illustrating as shown in Figure 2) of vulcanizate, carry out second section sulfuration.With the method, progressively staged operation, up to unsintered tape residue 150mm, sulfuration process at last is terminated.Short mould is adopted in the termination sulfuration, guarantees that end interface is that rubber links rubber, could guarantee the quality of end interface like this, sulfuration back and other part indifferences.As shown in Figure 2, the length of short mould is vulcanized than the also long 200mm of summation in two ends rubber part and semi-cure zone again, thereby guarantees joint strength, outward appearance and other position indifference.
Embodiment four:
Making diameter is that Φ 600mm, outer seal lip height are that 20.5mm, interior sealing lip height are that 18.5mm, bearing seal gap are that 19.3mm, sealing strip compressive strain design load are the Y type rubber movable seal ring of 1.2mm; Adopt the long vulcanization die of 1000mm earlier; On 750 tons of oil hydraulic presses of rubber plate vulcanization of 600mm bench top, high pressure steam heating; 3 step up cures, the 4th adopt the sulfuration lopping that is terminated of the hotpress of long vulcanization die of 800mm and 1200mm long table face.
Embodiment five:
Making diameter is that Φ 2000mm, outer seal lip height are that 20.5mm, interior sealing lip height are that 18.5mm, bearing seal gap are that 19.3mm, sealing strip compressive strain design load are the Y type rubber movable seal ring of 1.2mm; Adopt the long vulcanization die of 3m earlier; On 750 tons of oil hydraulic presses of rubber plate vulcanization of 2000mm bench top, high pressure steam heating; 3 step up cures, the 4th adopt the sulfuration lopping that is terminated of the hotpress of long vulcanization die of 1000mm and 1200mm long table face.
Embodiment six:
Be fabricated to Φ 10000mm, the outer seal lip height is that 20.5mm, interior sealing lip height are that 18.5mm, bearing seal gap are that 19.3mm, sealing strip compressive strain design load are the Y type rubber movable seal ring of 1.2mm; Adopt earlier the 17000mm vulcanization die of looking; On 750 tons of oil hydraulic presses of rubber plate vulcanization of 18200mm bench top, high pressure steam heating; 2 step up cures adopt the sulfuration lopping that is terminated of the hotpress of long vulcanization die of 800mm and 1200mm long table face for the 3rd time.
Claims (4)
1. the Y type rubber movable seal ring of the monolateral sealing of a length lip; It is characterized in that: the seal ring cross section is a Y shape; Form v-depression between inside and outside two sealing lips, and the length of interior sealing lip is shorter than outer seal lip, inner and outer sealing lip height difference is: 1.5mm～3.5mm; Under the effect of distortion impacting force, outer seal lip seals, and interior sealing lip does not then seal, and realizes monolateral sealing, and simultaneously interior sealing lip plays storage lubricating grease.
2. the step up cure technology of the close moving seal of Y type rubber of the monolateral sealing of a length lip according to claim 1; It is characterized in that technological process is: elastomeric compound is extruded into vertical bar shaped rubber base through Rubber Extruder; The vulcanization die that utilizes two cover die cavity Y type sectional shape is identical, length is different and the rubber plate vulcanization hotpress of supporting table top; According to the width of vulcanization die and hotpress table top, starting point and the terminal point of on processing sections, setting out sulfuration carry out step up cure in sulfidation; Preceding depanning in the sulfidation, a back progressive die and matched moulds all will guarantee rubber, semi-cure and the zero defect linking and the transition of vulcanizate; Termination lopping position guarantees to vulcanize after rubber is gone into the mould butt joint again, guarantees joint strength, outward appearance and other position indifference.
3. the step up cure technology of the Y type rubber movable seal ring of the monolateral sealing of length lip according to claim 2; It is characterized in that Y type rubber movable seal ring prepares bore and is: Φ 600mm～10000mm; Vulcanizing long die length is: 1000mm～17000mm, short die length is: 800mm～1500mm.
4. the step up cure technology of the Y type rubber movable seal ring of the monolateral sealing of length lip according to claim 3; It is characterized in that the specific operation step is following: (the bore scope is: Φ 600mm～10000mm) designs a mould to the Y type rubber movable seal ring bore of processing as requested; Whole machining earlier; Block into two molds different in size again, the length range of long mould is: 1000mm～17000mm, and the length range of short mould is: 800mm～1500mm;
Adopt unified sulfuration process parameter in the step up cure process, the Y type rubber material base that extruder is extruded is put in the mould, places on the rubber plate vulcanization machine, and cure time is 3～60 minutes, and sulfurize temperature is 150～180 ℃;
Initial first cure adopts long Mould Machining; One section from rubber base band begins sulfuration; The rubber base of 150mm～500mm is reserved in the port, and long mould is positioned at the outer part of heat of vulcanization platen table top, and (length range is: 200mm～600mm) adopt water cooling plant to cool off;
After first section sulfuration accomplished, occur rubber, semi-cure transition zone, complete cure district, semi-cure transition zone, the such join domain of rubber on the rubber base band, semi-cure length of transition zone scope is: 50mm～200mm;
In back to back second section sulfidation; Rubber base band left end semi-cure transition zone position turned left from the right side move into press table top 500mm～1600mm (moving into length range confirms according to the length of semi-cure transition zone the actual production); Make the complete cure district of post-cure cover the semi-cure transition zone of last time fully; Guarantee rubber, semi-cure and the zero defect linking and the transition (specifically illustrating as shown in Figure 2) of vulcanizate, carry out second section sulfuration;
With the method, progressively staged operation, up to unsintered tape residue 150mm～500mm, sulfuration process at last is terminated;
Short mould is adopted in the termination sulfuration, guarantees that end interface is that rubber links rubber, could guarantee the quality of end interface like this, sulfuration back and other part indifferences;
As shown in Figure 2, the length of short mould is vulcanized than the also long 200mm～700mm of summation in two ends rubber part and semi-cure zone again, thereby guarantees joint strength, outward appearance and other position indifference.
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| CN2012100016227A CN102563080A (en) | 2012-01-05 | 2012-01-05 | Y-shaped rubber dynamic sealing ring with long and short lips for unilateral sealing and sectional vulcanization process for sealing ring |
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| CN2012100016227A CN102563080A (en) | 2012-01-05 | 2012-01-05 | Y-shaped rubber dynamic sealing ring with long and short lips for unilateral sealing and sectional vulcanization process for sealing ring |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074887A (en) * | 2014-07-08 | 2014-10-01 | 陈斌 | Clutch booster high in sealing performance |
| CN104260249A (en) * | 2014-09-25 | 2015-01-07 | 马鞍山宏力橡胶制品有限公司 | Production process and cooler of special ultralarge-diameter rubber sealing ring for PCCP (Prestressed Concrete Cylinder Pipe) |
| CN108291648A (en) * | 2015-11-19 | 2018-07-17 | 日本华尔卡工业株式会社 | Containment member |
| CN108953613A (en) * | 2018-09-18 | 2018-12-07 | 三橡股份有限公司 | A kind of y-type seal ring and preparation method thereof |
| CN112172187A (en) * | 2020-08-31 | 2021-01-05 | 江苏浚荣升新材料科技有限公司 | Complete set of connection process for rubber sealing rings |
| CN112483652A (en) * | 2020-10-29 | 2021-03-12 | 一重集团(黑龙江)专项装备科技有限公司 | Wedge compensation type every single move sealing device |
| CN113389900A (en) * | 2021-06-22 | 2021-09-14 | 成都飞机工业（集团）有限责任公司 | Special-shaped sealing ring for vacuum milling fixture of skin parts and use method thereof |
| CN113478858A (en) * | 2021-07-27 | 2021-10-08 | 上海熹贾精密技术有限公司 | Segmented vulcanization compression molding method for large-inner-diameter rubber O-shaped sealing ring |
| CN113561394A (en) * | 2021-08-12 | 2021-10-29 | 西北橡胶塑料研究设计院有限公司 | Main drive rubber sealing element of shield tunneling machine and forming method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074887A (en) * | 2014-07-08 | 2014-10-01 | 陈斌 | Clutch booster high in sealing performance |
| CN104260249A (en) * | 2014-09-25 | 2015-01-07 | 马鞍山宏力橡胶制品有限公司 | Production process and cooler of special ultralarge-diameter rubber sealing ring for PCCP (Prestressed Concrete Cylinder Pipe) |
| CN104260249B (en) * | 2014-09-25 | 2017-06-30 | 马鞍山宏力橡胶制品有限公司 | The production technology and cooler of a kind of special super large caliber rubber seal of PCCP |
| CN108291648A (en) * | 2015-11-19 | 2018-07-17 | 日本华尔卡工业株式会社 | Containment member |
| CN108953613A (en) * | 2018-09-18 | 2018-12-07 | 三橡股份有限公司 | A kind of y-type seal ring and preparation method thereof |
| CN112172187A (en) * | 2020-08-31 | 2021-01-05 | 江苏浚荣升新材料科技有限公司 | Complete set of connection process for rubber sealing rings |
| CN112483652A (en) * | 2020-10-29 | 2021-03-12 | 一重集团(黑龙江)专项装备科技有限公司 | Wedge compensation type every single move sealing device |
| CN112483652B (en) * | 2020-10-29 | 2023-01-31 | 一重集团(黑龙江)专项装备科技有限公司 | Wedge compensation type every single move sealing device |
| CN113389900A (en) * | 2021-06-22 | 2021-09-14 | 成都飞机工业（集团）有限责任公司 | Special-shaped sealing ring for vacuum milling fixture of skin parts and use method thereof |
| CN113478858A (en) * | 2021-07-27 | 2021-10-08 | 上海熹贾精密技术有限公司 | Segmented vulcanization compression molding method for large-inner-diameter rubber O-shaped sealing ring |
| CN113561394A (en) * | 2021-08-12 | 2021-10-29 | 西北橡胶塑料研究设计院有限公司 | Main drive rubber sealing element of shield tunneling machine and forming method thereof |
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Application publication date: 20120711 |