CN201090727Y - Framework cover plastic piston - Google Patents
Framework cover plastic piston Download PDFInfo
- Publication number
- CN201090727Y CN201090727Y CNU2007200924185U CN200720092418U CN201090727Y CN 201090727 Y CN201090727 Y CN 201090727Y CN U2007200924185 U CNU2007200924185 U CN U2007200924185U CN 200720092418 U CN200720092418 U CN 200720092418U CN 201090727 Y CN201090727 Y CN 201090727Y
- Authority
- CN
- China
- Prior art keywords
- piston
- framework
- skeleton
- cylinder
- covers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Disclosed is a wear-resistant and airproof piston with a framework covered with plastic, which is characterized in that a piston framework and a plastic covering piece are sintered to a whole; the plastic covering piece firmly covers the outer surface of the piston framework. The outer diameter of the piston and the inner diameter of the cylinder are matched in tolerance fit under standard clearance sealing. The piston framework is made of metal and is used as a support piece. Taking the advantages of the properties of small resistance and self lubricity of the plastic resin, the piston framework achieves wear resistance and durability when the piston makes to-and-fro movement in the cylinder, thus reducing breakdown maintenance and improving the efficiency of the equipment.
Description
Affiliated technical field
The skeleton that the utility model relates to a kind of pneumatic cylinder covers moulds piston, and especially selflubricating does not have leakage, skeleton wear-resistant, durable use covers and moulds piston.
Background technique
At present, known pneumatic cylinder piston structure is to be combined by piston body, O type circle, opening seal ring, O type circle and seal ring hoop be embedded in the piston body radial groove make elastic packing, piston is reciprocating in cylinder body, and O type circle and opening seal ring are compressed in the cylinder wall inboard and carry out fricting movement simultaneously.Because rubber material friction factor is big, and under the gas pressure operating mode, rubber seal is not wear-resistant, it is fast to be worn away speed, and operating life is short, may wear to a certain degree to make the cylinder leakage cause equipment frequent shutdown replacing workpiece to be safeguarded.
Summary of the invention
Not wear-resistant in order to overcome existing cylinder piston because of seal ring; not durable use and the deficiency that causes frequent shutdown to safeguard; the utility model provides a kind of skeleton to cover and moulds piston; this skeleton covers to be moulded piston and not only wears away little; have self-lubricating function, and the sealing state that when long-term reciprocating friction work, remains intact, make it reach wear-resisting; durable, the long-lived effect of using.
The technological scheme that its technical problem that solves the utility model adopts is: the piston skeleton is with to cover plastomer sintering integrated, the piston skeleton is that the metallic material car is made type, skin employing at the piston skeleton has high wear resistance, self lubricity, the resin material that intensity is big to wait high comprehensive performance sintering process plasticizing routinely covers and moulds, plastic resin has the characteristic of plasticizing aftershrinkage, make that covering plastomer firmly is coated on piston skeleton skin, because the piston skeleton adopts metal material, in piston element, play stable supporting effect, covering plastomer external diameter specification does to cooperate by the clearance seal standard of tolerance with the cylinder bore diameter specification, it is little that the resin that covers plastomer has a friction factor, can produce selflubricating, smooth surface, comprehensive functions such as surface friction drag is little make skeleton cover the motion freely in cylinder body of plastomer piston.Thereby significantly reduce the abrasion of piston when moving repeatedly in cylinder, the wear resistance, durability, the sealing that reach piston element are intact, reduce the purpose of equipment downtime maintenance frequency.
The beneficial effects of the utility model are: skeleton is covered mould piston in the wear resistance applications, to ensure motion freely again in cylinder, seal intact effect, whole parts are made into integration, and are simple in structure, easy to process.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Diagram is the utility model sectional structural map
Among the figure 1, piston skeleton, 2, cover plastomer.
Embodiment
In the drawings, piston skeleton (1), cover plastomer (2) sintering plasticizing and be one, in shaping die, piston skeleton (1) is embedded in the resin that covers plastomer (2), adopt conventional molding sintering mode to plastify and form.
Claims (3)
1. a skeleton covers and moulds piston, at piston skeleton skin, covers plastomer and its and is one.It is characterized in that: will cover plastomer sintering plasticizing and be coated on piston skeleton skin and become an one-piece element.
2. skeleton according to claim 1 covers moulds piston, and it is characterized in that: the piston skeleton is selected metallic material for use.
3. skeleton according to claim 1 covers moulds piston, it is characterized in that: cover plastomer and select plastic resin material for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200924185U CN201090727Y (en) | 2007-10-29 | 2007-10-29 | Framework cover plastic piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200924185U CN201090727Y (en) | 2007-10-29 | 2007-10-29 | Framework cover plastic piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090727Y true CN201090727Y (en) | 2008-07-23 |
Family
ID=39862488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200924185U Expired - Fee Related CN201090727Y (en) | 2007-10-29 | 2007-10-29 | Framework cover plastic piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090727Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011023145A1 (en) * | 2009-08-31 | 2011-03-03 | 湖南三一智能控制设备有限公司 | Concrete pumping equipment and piston body thereof |
| CN104454438A (en) * | 2014-11-28 | 2015-03-25 | 广西大学 | Inflator |
| CN105864426A (en) * | 2016-05-31 | 2016-08-17 | 佛山市海斯特密封技术有限公司 | Piston |
-
2007
- 2007-10-29 CN CNU2007200924185U patent/CN201090727Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011023145A1 (en) * | 2009-08-31 | 2011-03-03 | 湖南三一智能控制设备有限公司 | Concrete pumping equipment and piston body thereof |
| CN104454438A (en) * | 2014-11-28 | 2015-03-25 | 广西大学 | Inflator |
| CN105864426A (en) * | 2016-05-31 | 2016-08-17 | 佛山市海斯特密封技术有限公司 | Piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20091130 |