CN213451112U

CN213451112U - Single-acting cylinder

Info

Publication number: CN213451112U
Application number: CN202022495350.3U
Authority: CN
Inventors: 蒋建勇
Original assignee: Ningbo City Airtop Pneumatic & Hydraulic Co ltd
Current assignee: Ningbo City Airtop Pneumatic & Hydraulic Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-06-15
Anticipated expiration: 2030-11-03

Abstract

The utility model discloses a single-acting cylinder, which comprises a cylinder barrel, a piston rod, a front cover and a rear cover, wherein, the two ends of the cylinder barrel are respectively provided with a convex edge along the circumferential direction, the convex edge extends along the axis direction close to the cylinder barrel, the front cover is connected with one end of the cylinder barrel and is provided with a first ring groove matched with the convex edge, and the rear cover is connected with the other end of the cylinder barrel and is provided with a second ring groove matched with the convex edge; the cylinder barrel, the front cover and the rear cover are matched together to form a piston cavity, the piston is arranged in the piston cavity in a sliding and sealing mode, the piston divides the piston cavity into a rod cavity and a rodless cavity, the front cover is provided with an air inlet communicated with the rod cavity, and the rear cover is provided with an exhaust hole communicated with the rodless cavity; one end of the piston rod is connected to the piston, the other end of the piston rod penetrates through the front cover and is exposed out of the front cover, the piston rod is in sliding sealing fit with the front cover, and a spring is arranged between the rear cover and the piston in a propping mode. The utility model discloses simple structure, leakproofness height, simple to operate and advantage with low costs have been possessed.

Description

Single-acting cylinder

Technical Field

The utility model relates to a cylinder technical field, in particular to single-action cylinder.

Background

Single-acting cylinders are one of the common cylinders, which are mainly driven by compressed gas, but are reset by a spring. Along with the development of science and technology, the progress of times, people are to realizing that industrial automation's enthusiasm rises gradually, and at present, old-fashioned single-action cylinder has the structure comparatively complicated and bulky, and manufacturing cost is higher, installs trouble and leakproofness relatively poor scheduling problem relatively, for faster realization industrial automation, above problem need solve urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, leakproofness height, simple to operate and with low costs single-action cylinder to prior art's defect and not enough.

The utility model provides a technical scheme that its technical problem adopted is: a single-acting air cylinder comprises a cylinder barrel, a piston rod, a front cover and a rear cover, wherein two ends of the cylinder barrel are respectively provided with a convex edge along the circumferential direction, the convex edges extend along the axial direction close to the cylinder barrel, the front cover is connected to one end of the cylinder barrel and is provided with a first annular groove matched with the convex edges, and the rear cover is connected to the other end of the cylinder barrel and is provided with a second annular groove matched with the convex edges; the cylinder barrel, the front cover and the rear cover are matched together to form a piston cavity, the piston is arranged in the piston cavity in a sliding and sealing mode, the piston divides the piston cavity into a rod cavity and a rodless cavity, an air inlet communicated with the rod cavity is formed in the front cover, and an exhaust hole communicated with the rodless cavity is formed in the rear cover; one end of the piston rod is connected to the piston, the other end of the piston rod penetrates through the front cover and is exposed out of the front cover, the piston rod is in sliding sealing fit with the front cover, a spring is arranged between the rear cover and the piston in a supporting mode, and the spring always tends to enable the piston to be close to the front cover.

Furthermore, a boss is arranged on one side face of the piston, a groove is arranged on the inner side of the rear cover, one end of the spring is sleeved on the boss, and the other end of the spring is arranged in the groove; the spring is firmly connected.

Further, a Y-shaped ring which is in sealing fit with the inner side wall of the cylinder barrel is sleeved on the piston, and an opening of the Y-shaped ring faces the front cover; the sealing performance is improved.

Furthermore, a dustproof ring and a guide sleeve are sequentially arranged in the front cover, the dustproof ring is sleeved with the piston rod and is in sliding sealing fit, and the guide sleeve is sleeved with the piston rod and is in sliding sealing fit; the sealing performance is improved.

Furthermore, a first O-shaped ring which is in sealing fit with the inner side wall of the cylinder barrel is embedded in the front cover; the sealing performance is improved.

Furthermore, a connecting lug is arranged on the outer side of the rear cover, and a threaded connecting part is arranged at the outer side end of the piston rod; the cylinder is convenient to install to a working position and convenient to connect.

Further, a joint is hermetically arranged on the air inlet, and a second O-shaped ring is arranged between the air inlet and the joint; the sealing performance is improved.

The utility model has the advantages that: the two ends of the cylinder barrel are respectively provided with the convex edges along the circumferential direction, the convex edges extend along the axis direction close to the cylinder barrel, the front cover is connected to one end of the cylinder barrel and is provided with the first annular groove matched with the convex edges, the rear cover is connected to the other end of the cylinder barrel and is provided with the second annular groove matched with the convex edges, the front cover and the rear cover are conveniently connected to the two ends of the cylinder barrel through a rolling technology, and a structure which is matched and connected through a screw and a sealing ring in the conventional technology is omitted, so that the structure is simpler, the installation is convenient, the sealing performance is improved, a redundant structure is omitted, and the cost is saved; generally speaking, the utility model discloses simple structure, leakproofness height, simple to operate and advantage with low costs have been possessed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Shown in the figure: 1-a cylinder barrel; 1.1-convex edge; 2-a piston; 2.1-boss; 3-a piston rod; 3.1-threaded connection; 4-front cover; 4.1-a first ring groove; 4.2-gas inlet; 5-rear cover; 5.1-a second ring groove; 5.2-exhaust hole; 5.3-grooves; 5.4-connecting lugs; 6-a spring; 7-Y-shaped ring; 8-a dustproof ring; 9-guide sleeve; 10-a first O-ring; 11-a linker; 12-second O-ring.

Detailed Description

For a more intuitive and complete understanding of the technical solution of the present invention, the following non-limiting characteristic description is now performed by combining the drawings of the present invention:

as shown in fig. 1, a single-acting cylinder comprises a cylinder barrel 1, a piston 2, a piston rod 3, a front cover 4 and a rear cover 5, wherein two ends of the cylinder barrel 1 are respectively provided with a convex edge 1.1 along the circumferential direction, the convex edges 1.1 extend along the axial direction close to the cylinder barrel 1, the front cover 4 is connected to one end of the cylinder barrel 1 and is provided with a first annular groove 4.1 matched with the convex edge 1.1, and the rear cover 5 is connected to the other end of the cylinder barrel 1 and is provided with a second annular groove 5.1 matched with the convex edge 1.1; the cylinder barrel 1, the front cover 4 and the rear cover 5 are matched together to form a piston cavity, the piston 2 is arranged in the piston cavity in a sliding and sealing mode, the piston cavity is divided into a rod cavity and a rodless cavity by the piston 2, an air inlet 4.2 communicated with the rod cavity is formed in the front cover 4, and an exhaust hole 5.2 communicated with the rodless cavity is formed in the rear cover 5; one end of the piston rod 3 is connected to the piston 2, the other end of the piston rod 3 penetrates through the front cover 4 and is exposed out of the front cover 4, the piston rod 3 is in sliding sealing fit with the front cover 4, a spring 6 is arranged between the rear cover 5 and the piston 2 in a supporting mode, and the spring 6 always tends to enable the piston 2 to be close to the front cover 4.

Specifically, before connecting protecgulum 4 and back lid 5 on cylinder 1, the protruding edge 1.1 of both sides has not been moulded yet, cup joints protecgulum 4 and back lid 5 respectively at the both ends of cylinder 1 earlier, then through the roll extrusion technique, extrudees cylinder 1 under the pressure effect for correspond and form protruding edge 1.1 respectively in first annular 4.1 and second annular 5.1 punishment, thereby with the both ends at cylinder 1 of the firm and sealed connection of protecgulum 4 and back lid 5.

A boss 2.1 is arranged on one side surface of the piston 2, a groove 5.3 is arranged on the inner side of the rear cover 5, one end of the spring 6 is sleeved on the boss 2.1, and the other end of the spring 6 is arranged in the groove 5.3; the piston 2 is sleeved with a Y-shaped ring 7 which is in sealing fit with the inner side wall of the cylinder barrel 1, and the opening of the Y-shaped ring 7 faces the front cover 4.

A dustproof ring 8 and a guide sleeve 9 are sequentially arranged in the front cover 4, the dustproof ring 8 is sleeved with the piston rod 3 and is in sliding sealing fit, and the guide sleeve 9 is sleeved with the piston rod 3 and is in sliding sealing fit; the front cover 4 is embedded with a first O-shaped ring 10 which is in sealing fit with the inner side wall of the cylinder barrel 1.

The outside of the rear cover 5 is provided with a connecting lug 5.4, and the outside end of the piston rod 3 is provided with a threaded connecting part 3.1.

The air inlet 4.2 is hermetically provided with a joint 11, and a second O-shaped ring 12 is arranged between the air inlet 4.2 and the joint 11.

The utility model discloses a concrete theory of operation as follows: the cylinder is arranged on a working position in advance, and the connecting lug 5.4 and the threaded connecting part 3.1 are correspondingly arranged; when the air compressor works, compressed air is input from the joint 11, enters the rod cavity through the air inlet 4.2, pushes the piston 2 and overcomes the acting force of the spring 6, so that the piston 2 moves towards the direction close to the rear cover 5, and meanwhile, the air in the rod-free cavity is exhausted out of the atmosphere through the exhaust hole 5.2, so that the normal movement of the piston 2 is ensured; on the contrary, the joint 11 is removed to input compressed gas, the piston 2 moves towards the direction close to the front cover 4 under the action of the elastic force of the spring 6, and the gas in the rod cavity is exhausted through the joint 11, so that the piston rod 3 is restored to the original position.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a single-action cylinder, includes cylinder (1), piston (2), piston rod (3), protecgulum (4) and hou gai (5), its characterized in that: the two ends of the cylinder barrel (1) are respectively provided with a convex edge (1.1) along the circumferential direction, the convex edges (1.1) extend along the axis direction close to the cylinder barrel (1), the front cover (4) is connected to one end of the cylinder barrel (1) and is provided with a first annular groove (4.1) matched with the convex edges (1.1), and the rear cover (5) is connected to the other end of the cylinder barrel (1) and is provided with a second annular groove (5.1) matched with the convex edges (1.1); the cylinder barrel (1), the front cover (4) and the rear cover (5) are matched together to form a piston cavity, the piston (2) is arranged in the piston cavity in a sliding and sealing mode, the piston (2) divides the piston cavity into a rod cavity and a rodless cavity, an air inlet (4.2) communicated with the rod cavity is formed in the front cover (4), and an exhaust hole (5.2) communicated with the rodless cavity is formed in the rear cover (5); one end of the piston rod (3) is connected to the piston (2), the other end of the piston rod (3) penetrates through the front cover (4) and is exposed out of the front cover (4), the piston rod (3) is in sliding sealing fit with the front cover (4), a spring (6) is arranged between the rear cover (5) and the piston (2) in a supporting mode, and the spring (6) always tends to enable the piston (2) to be close to the front cover (4).

2. The single-acting cylinder according to claim 1, wherein a boss (2.1) is arranged on one side surface of the piston (2), a groove (5.3) is arranged on the inner side of the rear cover (5), one end of the spring (6) is sleeved on the boss (2.1), and the other end of the spring (6) is arranged in the groove (5.3).

3. The single-acting cylinder according to claim 2, characterized in that a Y-shaped ring (7) which is in sealing fit with the inner side wall of the cylinder barrel (1) is sleeved on the piston (2), and the opening of the Y-shaped ring (7) faces the front cover (4).

4. The single-acting cylinder according to claim 1, wherein a dust ring (8) and a guide sleeve (9) are sequentially arranged in the front cover (4), the dust ring (8) is sleeved with the piston rod (3) and is in sliding sealing fit, and the guide sleeve (9) is sleeved with the piston rod (3) and is in sliding sealing fit.

5. A single-acting cylinder as claimed in claim 4, characterized in that said front cover (4) is fitted with a first O-ring (10) which is in sealing engagement with the inner side wall of said cylinder (1).

6. A single-acting cylinder as claimed in claim 1, characterized in that the rear cover (5) is provided on its outer side with a connecting lug (5.4) and the piston rod (3) is provided at its outer end with a threaded connection (3.1).

7. A single-acting cylinder as claimed in claim 1, wherein the inlet (4.2) is sealingly provided with a joint (11), and a second O-ring (12) is provided between the inlet (4.2) and the joint (11).