CN201100410Y - An oil jar sealing structure for coiling canister clamp hole of stainless cold rolling mill - Google Patents
An oil jar sealing structure for coiling canister clamp hole of stainless cold rolling mill Download PDFInfo
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- CN201100410Y CN201100410Y CNU2007201098638U CN200720109863U CN201100410Y CN 201100410 Y CN201100410 Y CN 201100410Y CN U2007201098638 U CNU2007201098638 U CN U2007201098638U CN 200720109863 U CN200720109863 U CN 200720109863U CN 201100410 Y CN201100410 Y CN 201100410Y
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- sealing
- ring
- lip
- oil
- cylinder
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Abstract
The utility model relates to a sealing structure of a vice jaw oil cylinder of a reel of a stainless steel cold calendar, comprising a cylinder body of the oil cylinder and a piston which is arranged inside the cylinder body, wherein a sealing component is disposed between the piston and the cylinder body. The sealing structure is characterized in that the sealing component is a sealing component which is combined by employing a blocking ring and a lip-type sealing component, wherein the lip-type sealing component is made of polyether polyether ester composite material, and the blocking ring is a uninterrupted circular ring and lined on the lip-type sealing component. The sealing structure can enhance the stability of sealing and utilizing properties of the oil cylinder, prolong sealing and utilizing life, thereby the stopping fault induced by oil leaking can be effectively controlled, and guaranteeing the quality of the production and stabilizing the product.
Description
Technical field
The utility model relates to a kind of stainless steel cold rolling mill reel jaw cylinder seal structure.
Background technique
Company's stainless steel cold rolling mill is 20 roller Senjimier single chassis stainless steel reversible cold-rolling units of the French DMS of introduction company, unit is by coil of strip dolly, sleeve mounting-and-dismounting device, cut-off machine, left and right sides coiling machine, memorial archway body, left and right sides wrapping machine, volume packing paper machine, plat control system, equipment such as roll change buggy are formed, and band steel maximum tension can reach respectively when different mill speeds: 500KN (480M/MIN); 295KN (800M/MIN).Milling train is each side established a pull reel, every coiling machine is by reel, gear-box, rotating hydraulic cylinder, compositions such as main motor, reel is made up of a rectangular pyramid mandrel and four sectors, and wherein to be provided with and to take the lead clamp device be jaw for sector, and reel is installed on the gear reduction box, gearbox input shaft links to each other with main motor with gear coupling by a transmission shaft, and reel is driven by rotating hydraulic cylinder and realizes spreading and contractive action.See Figure 1, number in the figure are 1 for rotating hydraulic cylinder; 2 is reduction gear box; 3 is reel; 4 are band steel clamp device (jaw).During reel harmomegathus, be installed on a jaw clamp bar on the sector and move simultaneously, its opening degree is changed realize clamping the function of being with steel toe portion, reach and batch purpose.This action is driven by hydraulic power, and in order to realize the driving of hydraulic power, DMS company adopts 8 small oil tanks to drive the action of jaw clamp bar in design, and former oil cylinder design is illustrated in fig. 2 shown below, and label is among Fig. 2, and 4 are band steel clamp device (jaw); 5 is the jaw oil cylinder; 6 is jaw oil cylinder piston Sealing; 7 is jaw cylinder block Sealing; 8 is jaw oil cylinder piston bar; 9 is the jaw clamp bar; 10 are band steel toe portion; Red arrow is depicted as oil-feed direction on the pressure side.Make piston rod action (red arrow is depicted as the oil-feed direction) by the oil-feed of single cavity pressure side, promote the band steel clamping action that the jaw clamp bar realizes that opening degree changes by piston rod.Single oil cylinder barrel dliameter is 40MM, stroke 12.5MM, and the cylinder body static seal adopts the lip seal form, and original material is VITON (fluorine rubber), and specification is 50 * 44.4 * 4.7; The piston seal form is similarly lip seal, and material also is VITON (fluorine rubber), and specification is 30 * 40 * 5.Find following problem through long-term practice:
Reel is as the milling train keypoint part; coiling tension is bigger; and the nip part bit motion is frequent, and temperature is higher again when rolling, so cause jaw cylinder seal senile abrasion extremely easily; oil leakage fault is taken place frequently; and being in can't slave mode, is difficult to hold inaction interval, and not only causing to shut down influences ordinary production; and the hydraulic oil that leaks also might make belt steel surface produce mass defect, and this major hidden danger is perplexing production and plant maintenance personnel always.The double faults of 4 reel jaw oil cylinders leakage of oil appear in year June in March, 2006 to 2006 continuously, and accumulative total was shut down leakage of oil 832L 22.5 hours.For this reason, collect and do labor relatively by the data that each fault is taken place, and the research of will each cylinder seal that damages in various degree sampling, draw the subject matter point that this fault takes place frequently: 1. the oil cylinder piston seal form designs bad; 2. the material capability of cylinder seal remains to be improved and improves usability with this.
The model utility content
Technical problem to be solved in the utility model provides a kind of stainless steel cold rolling mill reel jaw cylinder seal structure; it can improve the stability of cylinder seal usability; prolong and seal working life; the disorderly closedown that causes because of leakage of oil is effectively controlled, guarantees quality of product and steady production.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of stainless steel cold rolling mill reel jaw cylinder seal structure, it includes cylinder block and is installed in the interior piston of cylinder body, between piston and the cylinder body Sealing is arranged, it is characterized in that described Sealing is to adopt back-up ring to add the Sealing that lip packing combines, wherein lip packing is that polyethers polyamine fat composite is made, and back-up ring is to be continual annulus, and lining is on lip packing.
Described back-up ring is that lining is on lip packing root outer peripheral surface.
Described back-up ring is coated with grease.
Compared with prior art; advantage of the present utility model is: easy for installation; prolong the working life of lip-type seal spare, reduce cost, make lip-type seal obtain more performance; improve lubricated; high pressure resistant, can improve the stability of cylinder seal usability in a word, prolong sealing working life; the disorderly closedown that causes because of leakage of oil is effectively controlled, guarantees quality of product and steady production.
Description of drawings
Fig. 1 coiling machine structure sectional view;
Fig. 2 jaw cylinder structure sectional view;
The former sealing configuration sectional view of Fig. 3;
Fig. 4 improves back novel sealing structure sectional view.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As Fig. 1-4 signal, stainless steel cold rolling mill reel jaw cylinder seal structure, it includes cylinder block and is installed in the interior piston of cylinder body, between piston and the cylinder body Sealing is arranged, Sealing adopts sealing material to be used for the manufacturing of lip-type seal, improves sealing effect and performance:
After analysis is discussed, decision adopts a kind of novel high temperature polyethers polyamine fat composite to replace original fluorine rubber material, it is a kind of cerise high-efficiency polymer, adopt the PDI modified technique, solved traditional polyamine ester material effectively in the problem that can't use more than 85 ℃, its heatproof water resistance is the top grade in the similar polyamine ester material, reduces by 8 times than traditional NBR material friction coefficient.Its detailed technology parameter such as following table 1:
Table 1
| Temperature | -50——125℃ |
| Hardness | 95 shoreA |
| The material pressure grade | 630 kg/cm |
| |
3 meter per seconds |
| Applicable media | Oil, water or oil water mixture only have anti-retardant polyester or 50% above ethylene glycol not to use |
| Friction factor | 0.18, be 12% of traditional NBR |
It is synthetic that this novel polyether polyamine fat material adopts imported raw material to process, and has superior sealability.Compare the little wear-resisting property height of its friction factor, outstanding chemical-resistance with traditional fluorine rubber; Its serviceability temperature is wider, and instantaneous heatproof is higher than fluorine rubber; Its heat resistance and hydrolytic resistance are better, and compressive strain is littler than traditional fluorine rubber.The superiority of comparing with all the other tradition by following table 2 visible these materials.
Table 2
| Project | Novel polyether polyamine fat | The tradition fluorine rubber | Canvas filler rubber | Nitrile butadiene rubber | |
| Compression set | Minimum | Greatly | Greatly | Bigger | |
| Shape memory | Fabulous | Difference | Difference | Relatively poor | |
| Elasticity | High | Low | Low | In | |
| Hardness | High | High | Low | Low | |
| | Tradition | 10 times of polyamine ester | Difference | Difference | In |
| Withstand voltage properties | Fabulous | In | In | Difference | |
| Oil resistance | Good | In | In | Good | |
| Wear resistance | Fabulous | In | Difference | Difference | |
| Mould proof performance | Good | Difference | Difference | Good |
Improve the piston seal form, use back-up ring 11 to add the combination seal of lip-type seal spare 6
By to the labor and the comparison of oil leakage fault several times, can determine that the main source of damage still appears in the motive sealing of oil cylinder piston, each wearing and tearing that all can have in various degree, therefore improve in proper order the wear resistance except on material, doing improvement, also will add lip packing 6 combinations from the back-up ring 11 of making an issue of-adopt of Sealing in form.
See Fig. 4, be exactly Sealing be to adopt back-up ring 11 to add the Sealing that lip packing 6 combines, wherein lip packing 6 is that polyethers polyamine fat composite is made, and back-up ring 11 is to be continual annulus, lining is on lip packing 6.And back-up ring 11 is that lining is on lip packing 6 root outer peripheral surfaces.Last back-up ring 11 is coated with grease.
Its working principle is, back-up ring is replenishing of pressure seal (as O type circle), itself is not Sealing, and using the main cause of back-up ring is in order to reduce the gap of O type circle and similar Sealing low voltage side.Much bigger pressure when the structure that Sealing adds back-up ring will be born than independent use Sealing.Back-up ring is molded into a continual annulus with the high durometer rubber material, it is neither spiral, neither notch-cut type, so can not cause the local damage of O type circle and similar Sealing, by using back-up ring can enlarge the range of working pressure that Sealing bears, can also strengthen the gap between metal and the movement of metallic parts, help to overcome the overproof difficulty that causes of aperture and diameter of axle fit tolerance.
Design the suitable mutually combination seal of oil cylinder piston therewith through Lectotype and calculation and with reference to related data.See Fig. 3,4 relatively.The advantage that this combination seal uses is summarized as follows:
Easy for installation, when design, press the close tolerance designing for manufacturing, better elastic of back-up ring own and stretchability make it easy to install, and can not come off after packing into, both sides back-up ring structure is identical, dress instead can not have problems yet, and can smear a spot of lubricant grease when mounted between lip-type seal and back-up ring simultaneously, can play better to increase lubricated effect;
Prolong the working life of lip-type seal spare, because back-up ring adopts closed annulus in design, this just means can be as notch-cut type or other discontinuous constructions, make Sealing produce backfin, be out of shape or sting bad extruding, reduced owing to Sealing misaligns the chance that causes accidental damage, thereby prolonged the operating life of Sealing itself more reliably;
Reduce cost, in general, Sealing can both carry out effective seal in certain clearance limit scope, and after having used back-up ring, enlarged the gap limit, allow the loose fit of moving element, this has just remedied manufacturing tolerances, and has saved time and money in processing and design, obtain the working life of this lip-type seal simultaneously prolonging, replacement cycle has also prolonged, and also can further reduce the spare part expense, reduces cost;
Make lip-type seal obtain more performance, even the profile design of this back-up ring makes lip-type seal also can keep former sealing shape when high pressure, utilize suitable groove structure, back-up ring can not be extruded distortion, can not extrude in the inflow gap yet, thereby guarantee the perfect of performance;
Improve and lubricate, because the material and the configuration of back-up ring, and carry out grease when mounted and smear, can provide suitable lubricating to lip-type seal, can prevent the rapid wear of Sealing equally;
High pressure resistant, this kind back-up ring is to make with special rubber materials, the special higher pressure (90 kilograms of this oil cylinder working pressures) of ability, and long service life, and can improve sealability.
The material of back-up ring is a kind of enhancing tetrafluoro prescription of uniqueness, hardness is Shao Shi D60 °, optimized the performance of traditional teflon, carried out repeatedly the check of theory and practice by selecting multiple material for use, selected at last this kind is as final material, its temperature range is wide, operating temperature range is between-200 ℃ to+260 ℃, and hardness is moderate, long service life, have good creep-resistant property and anticorrosion withstand voltage properties, compatiblely with medium widely comprise nearly all hydraulic oil.
Claims (3)
1. stainless steel cold rolling mill reel jaw cylinder seal structure, it includes cylinder block and is installed in the interior piston of cylinder body, between piston and the cylinder body Sealing is arranged, it is characterized in that described Sealing is to adopt back-up ring to add the Sealing that lip packing combines, wherein lip packing is that polyethers polyamine fat composite is made, and back-up ring is to be continual annulus, and lining is on lip packing.
2. sealing configuration according to claim 1 is characterized in that described back-up ring is that lining is on lip packing root outer peripheral surface.
3. sealing configuration according to claim 2 is characterized in that described back-up ring is coated with grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201098638U CN201100410Y (en) | 2007-05-25 | 2007-05-25 | An oil jar sealing structure for coiling canister clamp hole of stainless cold rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201098638U CN201100410Y (en) | 2007-05-25 | 2007-05-25 | An oil jar sealing structure for coiling canister clamp hole of stainless cold rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201100410Y true CN201100410Y (en) | 2008-08-13 |
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ID=39936945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201098638U Expired - Lifetime CN201100410Y (en) | 2007-05-25 | 2007-05-25 | An oil jar sealing structure for coiling canister clamp hole of stainless cold rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201100410Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051167A (en) * | 2015-02-25 | 2016-10-26 | 斯凯孚公司 | Seal and method of manufacturing and/or using same |
| CN112555424A (en) * | 2020-11-11 | 2021-03-26 | 杭州电子科技大学 | Large-size internal and external type double-track structure flexible sealing device and working method thereof |
| CN112648375A (en) * | 2020-12-16 | 2021-04-13 | 天津包博特密封科技有限公司 | Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber |
-
2007
- 2007-05-25 CN CNU2007201098638U patent/CN201100410Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051167A (en) * | 2015-02-25 | 2016-10-26 | 斯凯孚公司 | Seal and method of manufacturing and/or using same |
| CN112555424A (en) * | 2020-11-11 | 2021-03-26 | 杭州电子科技大学 | Large-size internal and external type double-track structure flexible sealing device and working method thereof |
| CN112555424B (en) * | 2020-11-11 | 2022-09-20 | 杭州电子科技大学 | Large-size internal and external type double-track structure flexible sealing device and working method thereof |
| CN112648375A (en) * | 2020-12-16 | 2021-04-13 | 天津包博特密封科技有限公司 | Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080813 |
|
| CX01 | Expiry of patent term |