CN217421695U

CN217421695U - Cylinder structure

Info

Publication number: CN217421695U
Application number: CN202220819645.8U
Authority: CN
Inventors: 李培严
Original assignee: Shanghai Qishen Intelligent Technology Co ltd
Current assignee: Shanghai Qishen Intelligent Technology Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-09-13
Anticipated expiration: 2032-04-11

Abstract

The utility model discloses a cylinder structure, which comprises a cylinder body, the inside of the cylinder body is hollow to form an air cavity, a piston is arranged in the air cavity in a sliding manner, one end of the piston is connected with a piston rod, a first guide part is nested outside the extending end of the piston rod, a second guide part is nested outside the piston, the piston rod is limited by a self-lubricating bearing in a sliding manner, a first guide structure is realized, the contact area between a second sealing ring and the inner wall of the air cavity of the cylinder body is increased by the joint of a convex strip on the inner wall of the air cavity of the cylinder body and a surface groove of a guide belt, the guide effect is further improved, a second guide structure is formed, the motion of the piston is smoother, meanwhile, the convex strip on the inner wall of the air cavity of the cylinder body is used for extruding a second sealing ring, the sealing performance is further improved, the piston is more easily subjected to reciprocating motion under the action of air pressure, thereby avoiding the abrasion of the cylinder body and the damage to the sealing ring after the piston rod is inclined, the service life of the cylinder is prolonged.

Description

Cylinder structure

Technical Field

The utility model belongs to the technical field of the automatic correlation of mill, concretely relates to cylinder structure.

Background

The industrial automation industry uses a great deal of cylinders, so the stability of the cylinders is very important and is related to the efficiency of the whole automatic production line. The existing cylinder piston rod in the market directly reciprocates in the cylinder body, and the direction only depends on a small section of guide belt on the piston, and the guidance quality is relatively poor, can often appear the cylinder body wearing and tearing phenomenon, and the long-term accumulation can make the piston rod crooked to damage the sealing washer of piston department, produce and leak gas, lead to this automation line can not normal operating, bring huge loss for the mill.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cylinder structure to the guidance quality that provides is poor, easy jamming, cylinder body and the crooked problem of piston rod contact area easy wearing and tearing messenger cylinder pole among the solution above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an air cylinder structure, includes the cylinder body, the inside cavity of cylinder body forms the air cavity, and slides in the air cavity and be provided with the piston, the one end of piston is connected with the piston rod, the outside and the threaded connection that the one end of piston rod extends to the cylinder body has the nut, the cylinder body is located the fixed nested first guide that has of end that stretches out of piston rod, the head has been clogged to the other end of cylinder body, the outside of head is equipped with the retaining ring, the fixed nested inboard that is used for carrying on spacingly to the head of retaining ring at the cylinder body, the external fixation of piston is nested has the second guide, be equipped with on the air cavity inner wall of cylinder body a plurality of annular distributions and with second guide sliding fit's sand grip.

Preferably, the first guide part comprises a self-lubricating bearing, the self-lubricating bearing is sleeved on the outer side of the piston rod, and the piston rod is connected with the self-lubricating bearing in a sliding mode.

Preferably, a piston rod sealing dustproof ring fixedly embedded in the cylinder body is arranged on one side of the self-lubricating bearing, and the piston rod is connected with the piston rod sealing dustproof ring in a sliding mode.

Preferably, the piston rod is in threaded connection with the piston, a second cushion pad is fixedly nested outside the piston rod, the second cushion pad is attached to the side face of the piston, and a first cushion pad is fixedly nested outside one end of the piston, which faces away from the piston rod.

Preferably, the second guide piece comprises a guide belt, a plurality of wedge-shaped convex blocks distributed at equal intervals are arranged on the outer annular wall of the guide belt, and a groove corresponding to the convex strip is formed between every two adjacent wedge-shaped convex blocks.

Preferably, the first sealing ring is fixedly nested outside the end socket.

Preferably, a second sealing ring is fixedly nested outside one end of the piston close to the piston rod.

Preferably, the outer walls of the two sides of the cylinder body are provided with a first air inlet and a second air inlet which are both communicated with the air cavity, and the first air inlet and the second air inlet are respectively positioned on the two sides of the piston.

Compared with the prior art of cylinder structure, the utility model provides a cylinder structure possesses following beneficial effect:

1. the utility model fixes the first guide part outside the extending end of the piston rod, the piston rod is connected with the self-lubricating bearing in a sliding way, the piston rod is limited by the self-lubricating bearing in a sliding way, and the first guide structure is realized, so that the motion of the piston rod is more stable and smooth;

2. the utility model discloses an at the outside fixed nested second guide of piston, through the laminating of sand grip on the cylinder body air cavity inner wall and direction area surface recess, further improve the direction effect, form the second and say guide structure, make the motion of piston more level and smooth, simultaneously through the sand grip on the cylinder body air cavity inner wall under to the extrusion of second sealing washer, make the area of contact between second sealing washer and the cylinder body air cavity inner wall increase, and then improve the leakproofness, make the piston change and receive reciprocating motion under the atmospheric pressure effect, thereby the wearing and tearing of cylinder body and the crooked back of piston rod to the damage of sealing washer have been avoided, the life of cylinder has been prolonged.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of a cylinder structure according to the present invention;

fig. 2 is a schematic view of a front cross-sectional structure of a cylinder structure according to the present invention;

FIG. 3 is a schematic side sectional view of the cylinder body according to the present invention;

fig. 4 is an enlarged schematic structural diagram of a point a in fig. 3 according to the present invention.

In the figure: 1. a cylinder body; 2. a piston; 3. a piston rod; 4. a second cushion pad; 5. a first cushion pad; 6. a guide belt; 61. a wedge-shaped projection; 62. a groove; 7. a second seal ring; 8. a self-lubricating bearing; 9. the piston rod seals the dust ring; 10. sealing the end; 11. a first seal ring; 12. a retainer ring; 13. a nut; 14. a convex strip; 15. a first air inlet; 16. a second air inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a cylinder structure, including cylinder body 1, the inside cavity of cylinder body 1 forms the air cavity, and slide in the air cavity and be provided with piston 2, the one end of piston 2 is connected with piston rod 3, the one end of piston rod 3 extends to the outside and threaded connection of cylinder body 1 has nut 13, cylinder body 1 is located the fixed nested first guide that has of end that stretches out of piston rod 3, first guide includes self-lubricating bearing 8, self-lubricating bearing 8 cover is established in the outside of piston rod 3, piston rod 3 and self-lubricating bearing 8 sliding connection, it is spacing to slide piston rod 3 through self-lubricating bearing 8, play first guide structure, make the motion of piston rod 3 more steady smooth and easy.

Further, one side of the self-lubricating bearing 8 is provided with a piston rod sealing dustproof ring 9 fixedly embedded in the cylinder body 1, the piston rod 3 is connected with the piston rod sealing dustproof ring 9 in a sliding mode, the piston rod 3 is tightly attached to the piston rod 3 through the piston rod sealing dustproof ring 9, a dustproof effect is achieved, external dust is prevented from entering an air cavity from a gap between the piston rod 3 and the cylinder body 1, and meanwhile the dust is prevented from being attached to the outer surface of the piston rod 3 and then sliding into the air cavity.

It should be noted that,

piston rod

3 and 2 threaded connection of piston, the external fixation nestification of piston rod 3 has second blotter 4, and second blotter 4 pastes tightly in the side of piston 2, and piston 2 is fixed nestification with first blotter 5 in the one end external fixation that is dorsad piston rod 3, reduces the impact when piston 2 slides to air cavity both sides tip, protection piston 2 and cylinder body 1, noise when reducing piston 2 and moving simultaneously.

It is worth to be noted that the other end of the cylinder 1 is filled with the end socket 10, the outer side of the end socket 10 is provided with a retainer ring 12, the retainer ring 12 is fixedly nested at the inner side of the cylinder 1 for limiting the end socket 10, the outer part of the piston 2 is fixedly nested with a second guide member, the second guide member comprises a guide belt 6, the outer annular wall of the guide belt 6 is provided with a plurality of wedge-shaped protrusions 61 which are distributed at equal intervals, a groove 62 corresponding to the raised strip 14 is formed between two adjacent wedge-shaped protrusions 61, the inner wall of the air cavity of the cylinder 1 is provided with a plurality of raised strips 14 which are distributed annularly and are in sliding fit with the second guide member, the raised strip 14 on the inner wall of the air cavity of the cylinder 1 is attached to the groove 62 on the surface of the guide belt 6, so as to further improve the guiding effect and form a second guiding structure, the movement of the piston 2 is smoother, meanwhile, the outer part of the end socket 10 is fixedly nested with a first seal ring 11, the outer part of the end of the piston 2 close to the piston rod 3 is fixedly nested with a second seal ring 7, under the extrusion of sand grip 14 on the inner wall of the air cavity of the cylinder body 1 to the second sealing ring 7, the contact area between the second sealing ring 7 and the inner wall of the air cavity of the cylinder body 1 is increased, and then the sealing performance is improved, so that the piston 2 is easier to reciprocate under the action of air pressure.

It should be noted that, the outer walls of the two sides of the cylinder body 1 are provided with a first air inlet 15 and a second air inlet 16 which are both communicated with the air cavity, the first air inlet 15 and the second air inlet 16 are respectively positioned at the two sides of the piston 2, when the first air inlet 15 is communicated with pressure air, the piston 2 can drive the piston rod 3 to extend out, and when the second air inlet 16 is communicated with pressure air, the piston 2 can drive the piston rod 3 to shrink.

The utility model discloses a theory of operation and use flow: when the air compressor is used, the first air inlet 15 is increased to introduce pressure gas, the piston 2 can drive the piston rod 3 to extend, and when the second air inlet 16 is introduced with the pressure gas, the piston 2 can drive the piston rod 3 to contract;

and slide spacing to piston rod 3 through self-lubricating bearing 8 in above-mentioned motion process, play first guide structure, make the motion of piston rod 3 more steady smooth and easy, laminating through sand grip 14 on the inner wall of the air cavity of cylinder body 1 and guide belt 6 surface groove 62, further improve the direction effect, form second guide structure, make the motion of piston 2 more level and smooth, simultaneously through the sand grip 14 on the inner wall of the air cavity of cylinder body 1 to the extrusion of second sealing washer 7, make the area of contact between second sealing washer 7 and the inner wall of the air cavity of cylinder body 1 increase, and then improve the leakproofness, make piston 2 more easily receive reciprocating motion under the atmospheric pressure effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cylinder structure, includes cylinder body (1), the inside cavity of cylinder body (1) forms the air cavity, and slides in the air cavity and be provided with piston (2), the one end of piston (2) is connected with piston rod (3), the one end of piston rod (3) extends to the outside of cylinder body (1) and threaded connection has nut (13), its characterized in that: the cylinder body (1) is located the fixed nested first guide that has of the end that stretches out of piston rod (3), the other end of cylinder body (1) is filled up and is had head (10), the outside of head (10) is equipped with retaining ring (12), the fixed nested inboard that is used for carrying on spacingly to head (10) in cylinder body (1) of retaining ring (12), the fixed nested second guide that has of outside of piston (2), be equipped with on the air cavity inner wall of cylinder body (1) a plurality of annular distribution and with second guide sliding fit's sand grip (14).

2. A cylinder structure according to claim 1, wherein: the first guide piece comprises a self-lubricating bearing (8), the self-lubricating bearing (8) is sleeved on the outer side of the piston rod (3), and the piston rod (3) is connected with the self-lubricating bearing (8) in a sliding mode.

3. A cylinder structure according to claim 2, wherein: a piston rod sealing dustproof ring (9) fixedly embedded in the cylinder body (1) is arranged on one side of the self-lubricating bearing (8), and the piston rod (3) is connected with the piston rod sealing dustproof ring (9) in a sliding mode.

4. A cylinder structure according to claim 1, wherein: piston rod (3) and piston (2) threaded connection, the outside fixed nestification of piston rod (3) has second blotter (4), second blotter (4) paste the side in piston (2), the one end outside fixed nestification of piston (2) dorsad piston rod (3) has first blotter (5).

5. A cylinder structure according to claim 1, wherein: the second guide piece comprises a guide belt (6), a plurality of wedge-shaped convex blocks (61) distributed at equal intervals are arranged on the outer annular wall of the guide belt (6), and a groove (62) corresponding to the convex strip (14) is formed between every two adjacent wedge-shaped convex blocks (61).

6. A cylinder structure according to claim 1, wherein: and a first sealing ring (11) is fixedly nested outside the end socket (10).

7. A cylinder structure according to claim 1, wherein: and a second sealing ring (7) is fixedly nested outside one end of the piston (2) close to the piston rod (3).

8. A cylinder structure according to claim 1, wherein: the air cylinder is characterized in that the outer walls of two sides of the cylinder body (1) are provided with a first air inlet (15) and a second air inlet (16) which are communicated with the air cavity, and the first air inlet (15) and the second air inlet (16) are respectively positioned on two sides of the piston (2).