CN109185262B

CN109185262B - single-acting cylinder device without piston

Info

Publication number: CN109185262B
Application number: CN201811185786.3A
Authority: CN
Inventors: 黄超能
Original assignee: Foshan Core Pml Precision Mechanism Ltd
Current assignee: Foshan Core Pml Precision Mechanism Ltd
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2020-01-31
Anticipated expiration: 2038-10-11
Also published as: CN109185262A

Abstract

The invention relates to a piston-free single-acting cylinder device which is characterized by comprising a limiting block, a return spring arranged on the end face of the limiting block, a rear end cover assembly arranged on the side of the return spring , a rear transition cover assembly arranged on the end face of the rear end cover assembly, a cylinder body arranged on the end face of the rear transition cover assembly, a front end cover assembly arranged on the end face of the cylinder body, a piston rod arranged in the cylinder body and a buffer gasket arranged on the piston rod, wherein the piston rod is divided into two sections, the section has a smaller diameter, and the section has a larger diameter.

Description

single-acting cylinder device without piston

Technical Field

The invention relates to the field of hydraulic pressure and pneumatics, in particular to an single-acting cylinder device without a piston.

Background

In the industrial upgrading process, the machine is required to be developed to be larger, more precise and more miniature, the parts forming the machine are required to be correspondingly upgraded when the machine is upgraded, and the manufacturing process of the parts and the basic functions of newly added parts are required to be continuously improved. In industrial automation production, the traditional accessory device is difficult to be made to be extremely fine or extremely huge, and is mainly limited by factors such as the existing processing and manufacturing equipment and related processes. The existing cylinder body devices are all that a piston with a sealing ring divides a cylinder body inner cavity into two closed cavities, and the piston is pushed by the pressure difference of the two cavities, so that the piston or the cylinder body inner cavity needs to be made to be very small, the cost is very high, and the piston or the cylinder body inner cavity needs to be made to be very large, the cost is very high.

Disclosure of Invention

The invention aims to create types of new basic motion accessories in the field of automation so as to facilitate the cylinder body device to be more precise and smaller and also facilitate the cylinder body to be larger and longer, and therefore single-action cylinder body devices without pistons are provided.

In order to achieve the purpose, the piston-free single-action cylinder device is characterized by comprising a limiting block, a return spring arranged on the end face of the limiting block, a rear end cover assembly arranged on the side of the return spring , a rear transition cover assembly arranged on the end face of the rear end cover assembly, a cylinder body arranged on the end face of the rear transition cover assembly, a front end cover assembly arranged on the end face of the cylinder body, a piston rod arranged in the cylinder body and a buffer gasket arranged on the piston rod, wherein the rear end cover assembly comprises a rear end cover, a dust ring , a guide ring and a sealing ring , the rear transition cover assembly comprises a rear transition cover and a sealing ring II arranged on the rear transition cover, an air hole is formed in the rear transition cover, and the front end cover assembly comprises a front end cover, a sealing ring III, a guide ring II and a dust ring II which are arranged.

, the piston rod is divided into two sections, with smaller diameter and with larger diameter.

, the seal is in intimate contact with both the piston rod and the rear transition cap.

, the third sealing ring is tightly contacted with the piston rod and the front end cover.

, the limiting block is arranged on the section with the smaller diameter of the piston rod.

The invention has the beneficial effects that:

the single-acting cylinder device without the piston avoids the need of processing the inner wall of the inner cavity of the cylinder body, only needs to process two ends of the cylinder body, has simple and convenient processing, and is not limited by the length of the cylinder body and the diameter of the inner cavity in the manufacturing process, so that the cylinder body can be made very long, very large and very small.

The single-acting cylinder device without the piston has the advantages that the sealing parts are arranged at the two ends of the cylinder body due to the fact that the piston is not arranged, and the cylinder device is convenient to install and maintain.

Drawings

FIG. 1 is a schematic view of the general structure of kinds of single-acting cylinder devices without pistons according to the present invention;

FIG. 2 is a cross-sectional view of type of single-acting piston-less cylinder device of the present invention;

Detailed Description

The mechanism and the working principle of the present invention will be described in detail with reference to the accompanying drawings. For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted and that like or similar reference numerals correspond to like or similar parts.

Referring to fig. 1-2, the invention provides kinds of single-acting cylinder devices without pistons, which are characterized by comprising a limiting block 1, a return spring 2 arranged on the end surface of the limiting block 1, a rear end cover assembly 3 arranged on the return spring 2 side, a rear transition cover assembly 4 arranged on the end surface of the rear end cover assembly 3, a cylinder body 5 arranged on the end surface of the rear transition cover assembly 4, a front end cover assembly 6 arranged on the end surface of the cylinder body 5, a piston rod 7 arranged in the cylinder body 5 and a buffer gasket 8 arranged on the piston rod 7, wherein the rear end cover assembly 3 comprises a rear end cover 31, a dust ring 32 arranged in the rear end cover 31, a guide ring 33 and a seal ring 34, the rear transition cover assembly 4 comprises a rear transition cover 41 and a seal ring II 42 arranged on the rear transition cover 41, an air hole 411 is arranged on the rear transition cover 41, and the front end cover assembly 6 comprises a front end cover 61, a seal ring III 62, a guide ring II 63 and a dust ring II 64.

The piston rod 7 is divided into two sections, wherein the section has a smaller diameter, the section has a larger diameter, and when the acting medium enters the cylinder body, the left direction and the right direction are not equal due to the force acting on the plug rod 7, so that the plug rod 7 moves towards the side.

The sealing ring 34 is in close contact with both the piston rod 7 and the rear transition cover 41, forming a sealed chamber condition.

The third seal ring 62 is in close contact with both the piston rod 7 and the front end cap 61, which is that forms a sealed chamber condition.

The limiting block 1 is arranged on the section with the smaller diameter of the piston rod 7, and the limiting block 1 limits the piston rod 7 to be separated from the sealing cavity.

In conclusion, the invention provides single-acting cylinder devices without pistons, provides brand-new cylinder devices, is convenient to process and maintain, and provides brand-new methods for making the cylinder devices smaller and longer.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

The piston-free single-action cylinder device comprises a limiting block (1), a return spring (2) arranged on the end face of the limiting block (1), a rear end cover assembly (3) arranged on the side of the return spring (2), a rear transition cover assembly (4) arranged on the end face of the rear end cover assembly (3), a cylinder body (5) arranged on the end face of the rear transition cover assembly (4), a front end cover assembly (6) arranged on the end face of the cylinder body (5), a piston rod (7) arranged in the cylinder body (5) and a buffer gasket (8) arranged on the piston rod (7), wherein the rear end cover assembly (3) comprises a rear end cover (31), a dust ring (32), a guide ring (33) and a seal ring (34) arranged in the rear end cover (31), the rear transition cover assembly (4) comprises a rear transition cover (41), a second seal ring (42) arranged on the rear transition cover (41), an air hole (411) is arranged on the rear transition cover (41), and the front end cover assembly (6) comprises a front end cover (61), a third seal ring (62), a second guide ring (63) and a second seal;

the piston rod (7) is divided into two sections, wherein the section is smaller in diameter, the section is larger in diameter, and the limiting block (1) is arranged on the section, which is smaller in diameter, of the piston rod (7).
2. kind of single-acting cylinder device without piston as claimed in claim 1, wherein the sealing ring (34) is in close contact with both the piston rod (7) and the rear transition cover (41).
3. kind of single-acting cylinder device without piston as claimed in claim 1, wherein the sealing ring three (62) is in close contact with both the piston rod (7) and the front end cover (61).