Search

CN-224214493-U - Sealing structure of air cylinder

CN224214493UCN 224214493 UCN224214493 UCN 224214493UCN-224214493-U

Abstract

The utility model relates to the technical field of cylinder accessories, in particular to a sealing structure of a cylinder, which comprises a cylinder body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively sleeved at two ends of the cylinder body, the front end cover is connected with a metal positioning sleeve through a connecting disc and a fixing bolt, a sealing gasket is arranged between the connecting disc and the front end cover, a sealing guide sleeve is sleeved in the metal positioning sleeve, a piston rod is arranged in the cylinder body, one end of the piston rod penetrates through the sealing guide sleeve, a piston is sleeved at the other end of the piston rod, a sealing sleeve piece is sleeved and adhered to the outer side of the piston, sealing rings are embedded at two ends of the sealing sleeve piece through annular grooves, and the sealing structure of the cylinder improves the sealing performance between the connecting disc and the front end cover, improves the sealing performance between the piston rod and the metal positioning sleeve, and has remarkable effect.

Inventors

  • YUAN BAOXING
  • ZANG JUN

Assignees

  • 无锡奇能焊接系统有限公司

Dates

Publication Date
20260508
Application Date
20250614

Claims (6)

  1. 1. The sealing structure of the air cylinder is characterized by comprising an air cylinder body (2), a front end cover (4) and a rear end cover (18), wherein the front end cover (4) and the rear end cover (18) are respectively sleeved at two ends of the air cylinder body (2), the front end cover (4) is connected with a metal positioning sleeve (7) through a connecting disc (6) and a fixing bolt (10), a sealing gasket (13) is arranged between the connecting disc (6) and the front end cover (4), and a sealing guide sleeve (8) is sleeved in the metal positioning sleeve (7); The cylinder is characterized in that a piston rod (9) is arranged in the cylinder body (2), one end of the piston rod (9) penetrates through the sealing guide sleeve (8), the other end of the piston rod (9) is sleeved with a piston (15), a sealing sleeve piece (16) is sleeved and bonded on the outer side of the piston (15), and sealing rings (17) are embedded at the outer side of the piston (15) and located at the two ends of the sealing sleeve piece (16) through annular grooves.
  2. 2. The sealing structure of the cylinder according to claim 1, wherein perforated fixing blocks (5) are welded on the outer sides of the front end cover (4) and the rear end cover (18) at equal distances, and the perforated fixing blocks (5) of the front end cover (4) and the rear end cover (18) are fastened and fixed through a pull rod (3) and a locking nut (1).
  3. 3. The sealing structure of a cylinder according to claim 1, wherein the front end cover (4) is provided with an exhaust port (11) in communication with one side, and the rear end cover (18) is provided with an intake port (12) in communication with one side.
  4. 4. The sealing structure of the cylinder according to claim 1, wherein the top periphery of the front end cover (4) and the sealing gasket (13) are provided with butt joint screw holes (14) corresponding to the fixing bolts (10).
  5. 5. A sealing arrangement for a cylinder according to claim 1, characterized in that the sealing guide sleeve (8) and the sealing gasket (13) are both made of butyl rubber material.
  6. 6. A sealing arrangement for a cylinder according to claim 1, characterized in that the sealing sleeve piece (16) and the sealing ring (17) are both made of silicone rubber material.

Description

Sealing structure of air cylinder Technical Field The utility model relates to the technical field of air cylinder accessories, in particular to a sealing structure of an air cylinder. Background The cylinder is used as a core executing element of the pneumatic system, and the cylinder can drive the machine to realize linear, swinging, rotating and other movements by converting the pressure energy of the compressed air into mechanical energy, so that the cylinder has an irreplaceable function in industrial automation. The cylinder forms a closed cavity through the cylinder barrel, the end cover, the piston rod and the sealing piece, compressed air enters the rodless cavity from the air inlet to push the piston to move, and the piston moves reversely when the air outlet is opened. The electromagnetic valve controls the switching of the air passage to realize the reciprocating or rotating motion of the piston rod. The sealing structure of the existing cylinder is inconvenient to improve the sealing performance between the connecting disc and the front end cover, inconvenient to improve the sealing performance between the piston rod and the metal positioning sleeve, and has an unobvious effect. Disclosure of utility model Aiming at the problems in the prior art, the utility model provides a sealing structure of an air cylinder, which improves the sealing property between a connecting disc and a front end cover, improves the sealing property between a piston rod and a metal positioning sleeve and has remarkable effect. The technical scheme adopted by the utility model for solving the technical problems is that the sealing structure of the air cylinder comprises an air cylinder body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively sleeved at two ends of the air cylinder body, the front end cover is connected with a metal positioning sleeve through a connecting disc and a fixing bolt, a sealing gasket is arranged between the connecting disc and the front end cover, and a sealing guide sleeve is sleeved in the metal positioning sleeve; The cylinder barrel is internally provided with a piston rod, one end of the piston rod penetrates through the sealing guide sleeve, the other end of the piston rod is sleeved with a piston, the outer side of the piston is sleeved with a sealing sleeve piece in a bonding mode, and sealing rings are embedded into the outer side of the piston and the two ends of the sealing sleeve piece through annular grooves. By adopting the technical scheme, the sealing structure of the air cylinder improves the sealing property between the connecting disc and the front end cover, improves the sealing property between the piston rod and the metal positioning sleeve, and has remarkable effect. Specifically, the equal distance welding in front end housing and rear end housing outside has foraminiferous fixed block, taut fixed through pull rod and lock nut between foraminiferous fixed block of front end housing and rear end housing. By adopting the technical scheme, the front end cover and the rear end cover are convenient to be tensioned and fixed by using the perforated fixing block, the pull rod and the locking nut. Specifically, the front end cover is provided with an exhaust port in a side communication manner, and the rear end cover is provided with an air inlet in a side communication manner. Through adopting above-mentioned technical scheme, the exhaust pipe is convenient for connect by the gas vent, and the intake pipe is convenient for connect by the air inlet, is connected to two five-way single-control solenoid valve with exhaust pipe and intake pipe respectively and carries out the air current switching. Specifically, the top periphery of the front end cover and the sealing gasket are provided with butt joint screw holes corresponding to the fixing bolts. Specifically, the sealing guide sleeve and the sealing gasket are made of butyl rubber materials. Specifically, the sealing sleeve piece and the sealing ring are made of silicone rubber materials. The utility model has the beneficial effects that: According to the sealing structure of the air cylinder, the front end cover and the rear end cover are convenient to be tensioned and fixed by the aid of the fixing blocks with holes, the pull rod and the locking nut, the exhaust pipe is convenient to be connected by the aid of the exhaust port, the air inlet pipe is convenient to be connected by the aid of the air inlet, the exhaust pipe and the air inlet pipe are respectively connected to the two-position five-way single-control electromagnetic valve to conduct air flow switching, the expansion and the contraction of the piston rod are achieved, the sealing performance between the connecting disc and the front end cover is improved by the aid of the sealing gasket, and air leakage at the joint of the connecting disc and the front end cover is effectively prevented. According to the s