CN103148049B - Two-way control low-friction air cylinder - Google Patents
Two-way control low-friction air cylinder Download PDFInfo
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- CN103148049B CN103148049B CN201310093353.6A CN201310093353A CN103148049B CN 103148049 B CN103148049 B CN 103148049B CN 201310093353 A CN201310093353 A CN 201310093353A CN 103148049 B CN103148049 B CN 103148049B
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Abstract
The present invention relates to cylinder field, aim to provide a kind of two-way control low-friction air cylinder, comprise hood F and the hood R of cylinder block both sides, Tao You lower end, piston crown one end diaphragm in cylinder, a lower film air cavity is formed inside its diaphragm openings direction is fixed on cylinder block one end by lower cylinder lining, the tail portion of piston is also overlapped a upper end diaphragm, its diaphragm two ends are opening, one end open is also fixed on inside the other end of described cylinder block by upper cylinder lining, the other end opening is pressed into piston body after then being fixed by buckle A and buckle B, film air cavity on piston tail is formed, hood F and hood R is respectively equipped with exhaust port F and exhaust port R is corresponding with upper and lower film air cavity to communicate.The present invention carrys out the stroke of control piston by the pressure difference in two chambeies, and accuracy is high, and reaction velocity is fast, can work, and also can work stably under lower-speed state under the minute-pressure of 0.002MPa; Compare its better tightness of other cylinders, can save source of the gas, reduce energy consumption, working life is very long.
Description
Technical field
The present invention relates to cylinder field, specifically, is a kind of two-way control low-friction air cylinder.
Background technique
Low rubbing cylinder refers to the cylinder that piston slip resistance is very little, and wherein great majority are diaphragm type cylinder.Diaphragm type cylinder is that the final controlling element sealed made by a kind of barrier film capsule (being called for short cylinder diaphragm) that adopts, air tight, without the need to lubrication, frictional force is little, can provide promotion in various application occasions, promotes, fastening, winding, rotation and the power needed for the motion of other linear direction, therefore have good market prospects.
Low rubbing cylinder common is at present all single-lift (single cylinder diaphragm), cylinder diaphragm is the cylindrical of one end open, bottom cylindrical face contacts with the piston head of cylinder, along with the advance of piston head, cylinder diaphragm occurs in the phenomenon of piston face turnup, thus reduces the surface friction drag between piston and cylinder; The piston the other end is provided with Returnning spring, during cylinder operation, first will overcome the reaction force of spring, could move, and such cylinder ouput force is just not steady, has creeping phenomenon, when return hydraulic cylinder, is resetted by the reaction force of spring; Due to mechanical spring sensitivity and have self shortcoming working life, therefore the ouput force stability of the low rubbing cylinder of said structure and cylinder reaction sensibility are not all best.
In addition, the opening of traditional cylinder diaphragm and the joint of diaphragm height are self-assembling formation transitional surfaces, and angle value is arbitrary; But practice finds, if this angle does not have or too little, the useful area of cylinder diaphragm applied force will increase, and make impact force become large, the life-span of cylinder greatly reduces; And if this angle is too large, the useful area of cylinder diaphragm applied force will reduce, and makes the source of the gas that needs larger, make energy consumption reduce on the contrary; Therefore certain restriction must be done to this transition angle value.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of two-way control low-friction air cylinder is provided.
To achieve these goals, technological scheme of the present invention is:
A kind of two-way control low-friction air cylinder, comprise hood F and the hood R of cylinder block both sides, Tao You lower end, piston crown one end diaphragm in cylinder, its diaphragm openings direction is fixed on inside one end of cylinder block by lower cylinder lining, membrane body is attached on piston, form a lower film air cavity, the motion of piston and piston rod is promoted by the rolling of diaphragm, the tail portion of described piston is also overlapped a upper end diaphragm, its diaphragm two ends are opening, one end open is also fixed on inside the other end of described cylinder block by upper cylinder lining, the other end opening is then by the described piston body of the fixing rear press-in of buckle A and buckle B, film air cavity on piston tail defines, described hood F is provided with exhaust port F, described hood R is provided with exhaust port R, communicate with upper and lower film air cavity accordingly respectively, be used for for cylinder turnover exhaust.
As a further improvement on the present invention, described lower end diaphragm is made up of one deck base cloth outer cladding rubber; Described upper end diaphragm is made up of one deck above base cloth outer cladding rubber; Piston face all contacts with the one side of base cloth.
As a further improvement on the present invention, described Ji Bu is the flat ply ground fabric of polyester long fibre.
As a further improvement on the present invention, the diaphragm openings place of described lower end diaphragm and the angle of diaphragm height joint are between 26-30 degree.
As a further improvement on the present invention, described angle is 28 degree.
As a further improvement on the present invention, rubber sheath is adopted to seal between described hood F and piston rod.
As a further improvement on the present invention, described hood F and hood R is formed by die casting, and carries out process of spraying paint again after impregnation, oxidation.
Below to the detailed comparative descriptions of beneficial effect that the present invention obtains:
What one, traditional low rubbing cylinder adopted is single-lift (single diaphragm), adds a spring in cylinder, during return hydraulic cylinder, by reactive spring force backhaul, the stability of such ouput force and the reaction sensibility of cylinder all poor.
What the present invention adopted is that upper and lower two diaphragms are formed with two source of the gas chambeies, and carried out the stroke of control piston by the pressure difference in two chambeies, therefore accuracy is high; And cylinder diaphragm all adopts by adding Ji Bu after sulfurization technology process, base cloth is the flat ply ground fabric of polyester long fibre of thickness 0.25mm; Upper end diaphragm adopts the diaphragm of two layers of base cloth, and lower end diaphragm adopts the diaphragm of one deck base cloth, this is because cylinder upper end diaphragm mainly reaction velocity, anti-impact force is higher, therefore adopts two layers of base cloth to increase working life; Lower end diaphragm is mainly receptance and stability, less demanding to anti-impact force, and therefore adopt one deck base cloth that cylinder can be made more responsive, stability is better.
Compared to existing technology, its beneficial effect is:
1, parallel gas feed is adopted, can be faster than single-lift reaction velocity, also can reply delicately.
2, during cylinder work done, can not hysteresis phenomenon be there is, and can work under the minute-pressure of 0.002MPa.
3, cylinder is when there being pressure (exerting oneself larger than reactive spring force), also can carry out work reposefully.
Two, the sealing of traditional double dynamic air cylinder is O shape ring type, not exclusively sealing in cylinder chamber, and surface friction drag is large; Poor stability during cylinder operation and receptance are all poor;
Double-acting cylinder of the present invention adopts two diaphragms, and upper end diaphragm is pressed on piston after being riveted by buckle A and buckle B, and add on hood F and adopt rubber sheath sealing, two chambeies of such cylinder seal all completely; The work of cylinder carries out work by the pressure difference in these two chambeies; Advantage is:
1, Pneumatic Cylinder with Friction is lower, even if slightly pressure change, also can reply delicately.
2, during cylinder start, hysteresis phenomenon is not had; Can in the minute-pressure work of pressure difference 0.002MPa.
3, cylinder is under the state of low speed, also can work stably.
4, good seal performance, saves source of the gas more than other cylinder, reduces energy consumption.
5, the cylinder life-span is very long.
Three, traditional cylinder diaphragm openings place and diaphragm height joint do not have specific angles; Cylinder diaphragm of the present invention is 26 degree of-30 degree at this set angle, and wherein 28 degree is best; Advantage is:
1, cylinder diaphragm is assembled in cylinder block like this, and can reach and seal completely, the source of the gas in cylinder block does not leak, and saves source of the gas, reduces energy consumption.
2, than other cylinder, longer service life.
Four, traditional cylinder end piece adopts technique to be die casting+spray paint; Cylinder end piece of the present invention (i.e. hood F and hood R) adopts technique to be die casting+impregnation+oxidation+lacquer spraying technique, and add impregnation and oxidation two road techniques, advantage is:
1, containing soaking technology mainly: each die castings, because of processing problems, interiors of products has spilehole, is that these spileholes are entered resin filling containing soaking technology, and the source of the gas in such cylinder block just leaks less than in spilehole, saves source of the gas like this, reduces energy consumption.
2, oxidation technology mainly: increase adsorption force when spraying paint, make paint difficult drop-off.
Accompanying drawing explanation
Fig. 1 is the structure cut-away view of two-way control low-friction air cylinder of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of the lower end diaphragm in Fig. 1;
Fig. 4 is the enlarged view in R portion in Fig. 3;
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, two-way control low-friction air cylinder of the present invention, the left and right end cap of cylinder block 5 is hood F1 and hood R2; Piston 4 in cylinder, lower end diaphragm 7 is overlapped in head one end, and upper end diaphragm 8 is overlapped in afterbody one end; The opening direction of lower end diaphragm 7 is fixed on inside one end of cylinder block 5 by lower cylinder lining 6, form lower film air cavity with piston 4; Upper end diaphragm 8 two ends are opening, and one end open is also fixed on inside the other end of cylinder block 5 by upper cylinder lining 11, and the other end opening is then riveted fixing by buckle A9 and buckle B10, are then pressed into piston 4 afterwards and form film air cavity with piston 4; Air cavity exhaust port F13 and R14 is set accordingly on hood F1 and hood R2 simultaneously, communicates with upper and lower film air cavity for input and output gas respectively, the stroke moved by the pressure difference control piston of two air cavitys.
As shown in Figure 3 and Figure 4, the profile of lower end diaphragm 7 is the cylindrical of one end open, and the polyester long fibre plain weave base cloth thick by 0.25mm is made, and for sensitivity adopts single layer structure, cover rubber layer outward, the surface of piston 4 contacts with there being the one side of base cloth; At this columniform opening, namely and the angle (being expressed as A in figure 3) of diaphragm height joint be generally surely located between 26-30 degree, in this specific embodiment desirable 28 degree, substantially can reach and seal completely.
Upper end diaphragm 8 is impact resistance, adopts two layers of base cloth to increase working life, cover rubber layer outward, the one side having base cloth also with the surface contact of piston 4; Hood F1 and hood R2 makes by die casting, and after impregnation, oxidation, then carry out process of spraying paint, not easily there is obscission after painting like this; Wherein seal between hood F1 and piston rod 3 and adopt rubber sheath 12, seal completely to reach.
Finally; it should be noted that; in specific embodiment described in this specification, the title etc. of its technology contents can be different, and all equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection domain of patent of the present invention.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (1)
1. a two-way control low-friction air cylinder, comprise hood F (1) and the hood R (2) of cylinder block (5) both sides, Tao You lower end diaphragm, piston (4) head one end (7) in cylinder, its diaphragm openings direction is fixed on inside one end of cylinder block (5) by lower cylinder lining (6), membrane body is attached on piston (4), form a lower film air cavity, the motion of piston (4) and piston rod (3) is promoted by the rolling of diaphragm, the tail portion of described piston (4) is also overlapped a upper end diaphragm (8), its diaphragm two ends are opening, one end open is also fixed on inside the other end of described cylinder block (5) by upper cylinder lining (11), the other end opening is then by fixing rear press-in described piston (4) body of buckle A (9) and buckle B (10), film air cavity on piston tail defines, described hood F (1) is provided with exhaust port F (13), described hood R (2) is provided with exhaust port R (14), communicate with upper and lower film air cavity accordingly respectively, be used for for cylinder turnover exhaust, it is characterized in that, the diaphragm openings place of described lower end diaphragm (7) and the angle of diaphragm height joint are 28 degree, described lower end diaphragm (7) is made up of one deck base cloth outer cladding rubber, described upper end diaphragm (8) is made up of one deck above base cloth outer cladding rubber, piston face all contacts with the one side of base cloth, described base cloth is the flat ply ground fabric of polyester long fibre, rubber sheath (12) is adopted to seal between described hood F (1) and piston rod (3), described hood F (1) and hood R (2) are formed by die casting, and carry out process of spraying paint again after impregnation, oxidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093353.6A CN103148049B (en) | 2013-03-21 | 2013-03-21 | Two-way control low-friction air cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093353.6A CN103148049B (en) | 2013-03-21 | 2013-03-21 | Two-way control low-friction air cylinder |
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| Publication Number | Publication Date |
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| CN103148049A CN103148049A (en) | 2013-06-12 |
| CN103148049B true CN103148049B (en) | 2016-02-03 |
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| CN201310093353.6A Active CN103148049B (en) | 2013-03-21 | 2013-03-21 | Two-way control low-friction air cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105570231B (en) * | 2014-09-28 | 2018-01-23 | 重庆德盟液压机械有限公司 | Rod chamber static seal oil cylinder |
| CN109630495A (en) * | 2018-10-19 | 2019-04-16 | 中国矿业大学 | A kind of diaphragm support cylinder for large optical mirror processing |
| CN109915434A (en) * | 2019-01-17 | 2019-06-21 | 李军 | It is a kind of using oil-water media without sealing ring hydraulic cylinder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542136A (en) * | 2006-12-08 | 2009-09-23 | 藤仓橡胶工业株式会社 | Rodless cylinder device |
| CN202158033U (en) * | 2011-06-30 | 2012-03-07 | 张成斌 | Low-friction air cylinder |
| CN202228472U (en) * | 2011-10-20 | 2012-05-23 | 杭州藤仓橡胶有限公司 | One-way telescoping air cylinder |
| CN203161705U (en) * | 2013-03-21 | 2013-08-28 | 海宁新林达自动化设备有限公司 | Double-circuit-controlled low-friction air cylinder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62200006A (en) * | 1986-02-25 | 1987-09-03 | Hino Motors Ltd | Air cylinder |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542136A (en) * | 2006-12-08 | 2009-09-23 | 藤仓橡胶工业株式会社 | Rodless cylinder device |
| CN202158033U (en) * | 2011-06-30 | 2012-03-07 | 张成斌 | Low-friction air cylinder |
| CN202228472U (en) * | 2011-10-20 | 2012-05-23 | 杭州藤仓橡胶有限公司 | One-way telescoping air cylinder |
| CN203161705U (en) * | 2013-03-21 | 2013-08-28 | 海宁新林达自动化设备有限公司 | Double-circuit-controlled low-friction air cylinder |
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