CN114263651A

CN114263651A - Double-acting cylinder

Info

Publication number: CN114263651A
Application number: CN202111661558.0A
Authority: CN
Inventors: 张长林; 严涛; 程明华
Original assignee: Jiangsu Hualin Pneumatic Hydraulic Whole Set Equipment Co ltd
Current assignee: Jiangsu Hualin Pneumatic Hydraulic Whole Set Equipment Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-04-01

Abstract

The invention provides a double-acting cylinder which comprises a cylinder barrel, wherein a primary piston is arranged in the cylinder barrel, the primary piston is of a cavity structure, a secondary piston is arranged in a cavity, a primary piston rod connected with the primary piston is arranged on a front cylinder cover of the cylinder barrel in a penetrating mode, and a secondary piston rod connected with the secondary piston is arranged on a rear cylinder cover of the cylinder barrel in a penetrating mode. According to the double-acting cylinder provided by the invention, the primary piston is used as the cylinder barrel of the secondary piston, so that the volume of the cylinder can be reduced, the mass of the cylinder is reduced, and the double-acting cylinder is suitable for popularization.

Description

Double-acting cylinder

Technical Field

The invention relates to the field of cylinders, in particular to a double-acting cylinder.

Background

The cylinder is a very common pneumatic element, and uses compressed air to push the piston, so that the piston rod moves to drive the mechanical parts to operate. In the practical application process, in order to complete the processing technology of one working procedure, continuous actions of a plurality of cylinders are often needed to complete the processing; because each of the plurality of cylinders can only complete a single action, the working efficiency is low, the 'collision' image is easily generated due to the incongruity of the work of the cylinders, and the installation of the plurality of cylinders can cause the assembly of tool parts to be inconvenient and the processing precision of workpieces to be reduced. Therefore, the invention is expected to invent a cylinder product with a plurality of actions, so as to overcome the defect and the defect of single function of the conventional common cylinder element and meet the application requirement of multi-process machining or multi-control process.

Therefore, in order to overcome the disadvantages of the prior art, it is necessary to design a double acting cylinder to solve the above problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a double-acting cylinder.

In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: the double-acting cylinder comprises a cylinder barrel, wherein a first-stage piston is arranged in the cylinder barrel, the first-stage piston is of a cavity structure, a second-stage piston is arranged in a cavity, a first-stage piston rod connected with the first-stage piston is arranged on a front cylinder cover of the cylinder barrel in a penetrating mode, and a second-stage piston rod connected with the second-stage piston is arranged on a rear cylinder cover of the cylinder barrel in a penetrating mode.

The preferable technical scheme is as follows: the cylinder barrel is divided into a first-stage front side cavity and a first-stage rear side cavity by the first-stage piston, a first air path communicated with the first-stage front side cavity is arranged on the front end cover, and a second air path communicated with the first-stage rear side cavity is arranged on the rear end cover.

The preferable technical scheme is as follows: the secondary piston divides the interior of the primary piston into a secondary front cavity and a secondary rear cavity, a third air passage and a fourth air passage are arranged in the primary piston rod, the third air passage is communicated with the secondary front cavity, and the fourth air passage is communicated with the secondary rear cavity.

The preferable technical scheme is as follows: the first-stage piston comprises a main body part and a cover part, the cover part is provided with a through hole through which the second-stage piston rod penetrates, and the main body part is provided with a fifth gas path communicated with the fourth gas path and the second-stage rear-side cavity.

Due to the application of the technical scheme, the invention has the beneficial effects that:

according to the double-acting cylinder provided by the invention, the primary piston is used as the cylinder barrel of the secondary piston, so that the volume of the cylinder can be reduced, the mass of the cylinder is reduced, and the double-acting cylinder is suitable for popularization.

Drawings

FIG. 1 is a schematic view of the present invention.

In the above drawings, 1, a cylinder barrel; 2. a primary piston; 21. a main body portion; 22. a cover portion; 3. a secondary piston; 4. a primary piston rod; 5. a secondary piston rod; 6. a first gas path; 7. a second gas path; 8. a third gas path; 9. a fourth gas path; 10. and a fifth gas path.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is usually placed in when used, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1, the double-acting cylinder proposed for the present invention comprises a cylinder tube 1. Be equipped with one-level piston 2 in the cylinder 1, one-level piston 2 is cavity structure and is equipped with second grade piston 3 wherein, wears to be equipped with the one-level piston rod 4 of connecting one-level piston 2 on the preceding cylinder cap of cylinder 1, wears to be equipped with the second grade piston rod 5 of connecting second grade piston 3 on the back cylinder cap of cylinder 1.

The cylinder barrel 1 is internally divided into a first-stage front side cavity and a first-stage rear side cavity by the first-stage piston 2, a first air passage 6 communicated with the first-stage front side cavity is formed in the front end cover, and a second air passage 7 communicated with the first-stage rear side cavity is formed in the rear end cover. The expansion and contraction of the primary piston rod 4 can be controlled by controlling the air inlet and outlet of the first air path 6 and the second air path 7.

The second-stage piston 3 divides the interior of the first-stage piston 2 into a second-stage front-side cavity and a second-stage rear-side cavity, a third air passage 8 and a fourth air passage 9 are arranged in the first-stage piston rod 4, the third air passage 8 is communicated with the second-stage front-side cavity, and the fourth air passage 9 is communicated with the second-stage rear-side cavity. The expansion and contraction of the secondary piston rod 5 can be controlled by controlling the air inlet and outlet of the third air path 8 and the fourth air path 9.

Specifically, the primary piston 2 includes a main body 21 and a cover 22, a through hole for the secondary piston rod 5 to penetrate is formed in the cover 22, and a fifth air passage 10 for communicating the fourth air passage 9 with the secondary rear cavity is formed in the main body 21.

Therefore, the invention has the following advantages:

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a double acting cylinder, includes the cylinder, be equipped with one-level piston in the cylinder, its characterized in that: the piston cylinder is characterized in that the first-stage piston is of a cavity structure, a second-stage piston is arranged in the cavity, a first-stage piston rod connected with the first-stage piston penetrates through the front cylinder cover of the cylinder, and a second-stage piston rod connected with the second-stage piston penetrates through the rear cylinder cover of the cylinder.

2. A double-acting cylinder according to claim 1, characterized in that: the cylinder barrel is divided into a first-stage front side cavity and a first-stage rear side cavity by the first-stage piston, a first air path communicated with the first-stage front side cavity is arranged on the front end cover, and a second air path communicated with the first-stage rear side cavity is arranged on the rear end cover.

3. A double-acting cylinder according to claim 1, characterized in that: the secondary piston divides the interior of the primary piston into a secondary front cavity and a secondary rear cavity, a third air passage and a fourth air passage are arranged in the primary piston rod, the third air passage is communicated with the secondary front cavity, and the fourth air passage is communicated with the secondary rear cavity.

4. A double-acting cylinder according to claim 3, characterized in that: the first-stage piston comprises a main body part and a cover part, the cover part is provided with a through hole through which the second-stage piston rod penetrates, and the main body part is provided with a fifth gas path communicated with the fourth gas path and the second-stage rear-side cavity.