Air cylinder for pneumatic guns

Abstract

An air cylinder for pneumatic guns including a cylinder body. The cylinder body includes a side wall, a tubular air storage chamber, a piston capable of axially sliding along the side wall, an air charging hole, and an elastic member. The piston divides the air storage chamber into a first cavity and a second cavity. The air charging hole communicates with the first cavity. The elastic member is disposed in the second cavity and is capable of continuously pushing the piston towards the first cavity.

Claims

1. An air cylinder for pneumatic guns, comprising a cylinder body; the cylinder body comprising: a side wall; an air storage chamber; a piston capable of axially sliding along the side wall; an air charging hole; and an elastic member; wherein: the piston is disposed in the air storage chamber and divides the air storage chamber into a first cavity and a second cavity; the air charging hole communicates with the first cavity, and the elastic member is disposed in the second cavity and the elastic member is capable of continuously pushing the piston towards the first cavity; the cylinder body is a seamless steel tube, a front connecting shaft and a rear connecting shaft are respectively arranged in two end tube openings of the cylinder body; an O-shaped seal ring is arranged between the rear connecting shaft and the side wall of the cylinder body; the piston, the side wall of the cylinder body, the rear connecting shaft, and the O-shaped seal ring collectively define the first cavity; the air charging hole is formed in the rear connecting shaft; the front connecting shaft is plugged in the cylinder body; and the front connecting shaft, the piston, and the side wall of the cylinder body collectively define the second cavity.

2. The air cylinder of claim 1, wherein the elastic member is compressed air, and the compressed air is sealed in the second cavity.

3. The air cylinder of claim 1, wherein the elastic member is a compression spring, one end of the compression spring abuts against a bottom wall of the cylinder body, and the other end of the compression spring abuts against the piston.

4. The air cylinder of claim 1, wherein the elastic member is an air spring, one end of the air spring abuts against a bottom wall of the cylinder body, and the other end of the air spring abuts against the piston.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a sectional view of an air cylinder in accordance with Example 1 of the present disclosure;

(2) FIG. 2 is a sectional view of an air cylinder in accordance with Example 2 of the present disclosure; and

(3) FIG. 3 is a sectional view of an air cylinder in accordance with Example 3 of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(4) For further illustrating the invention, experiments detailing an air cylinder for pneumatic guns are described below. It should be noted that the following examples are intended to describe and not to limit the invention.

(5) As shown in FIG. 1, FIG. 2 and FIG. 3, an air cylinder for pneumatic guns is mounted on one side of a pneumatic gun barrel in parallel and comprises a cylinder body 1. The cylinder body 1 comprises a tubular air storage chamber, and a piston 2 is disposed in the air storage chamber and capable of axially sliding along the side wall of the air storage chamber. The piston 2 divides the air storage chamber into two independent cavities, that is, a first cavity 11 and a second cavity 12. An air charging hole 13 communicating with the first cavity 11 is formed in the upper end part of the cylinder body 1. The air charging hole 13 is used for injecting compressed air into a compressed air chamber of a pneumatic gun to fire bullets, and an elastic member is disposed in the second cavity 12 and is capable of continuously pushing the piston towards the first cavity.

(6) In the present disclosure, the cylinder body 1 is a seamless steel tube, and a front connecting shaft 4 and a rear connecting shaft 5 are respectively arranged in two end tube openings of the cylinder body 1. An O-shaped seal ring 14 is arranged between the rear connecting shaft 5 and the side wall of the cylinder body 1. The piston 2, the cylinder body 1, the rear connecting shaft 5 and the O-shaped seal ring 14 collectively define the first cavity 11. The air charging hole 13 is disposed in the rear connecting shaft 5, the front connecting shaft 4 is tightly plugged in the cylinder body 1, and the front connecting shaft 4, the piston 2 and the cylinder body 1 collectively define the second cavity 12.

(7) Example 1 as shown in FIG. 1: the elastic member is an air spring 6, one end of the air spring 6 abuts against the inner side of the front connecting shaft 4 at the bottom wall of the cylinder body 12, and the other end of the air spring 6 abuts against the piston 2.

(8) Example 2 as shown in FIG. 2: the elastic member is a compression spring 7, one end of the compression spring 7 abuts against the inner side of the front connecting shaft 4 at the bottom wall of the cylinder body 12, and the other end of the compression spring 7 abuts against the piston 2.

(9) Example 3 as shown in FIG. 3: the elastic member is compressed air 8, and the compressed air 8 is sealed in the second cavity 12.

(10) A manufacturing procedure for the air cylinder for pneumatic guns, provided by the present disclosure, is as follows:

(11) 1. first designing a cylinder body (an air cylinder) made of a seamless steel tube;

(12) 2. designing a rear connecting shaft at the back of the seamless steel tube (the air cylinder), and designing an air charging hole (which is used for injecting air into the air cylinder);

(13) 3. designing a piston capable of sealing air at the middle part of the seamless steel tube (the air cylinder) to divide the air cylinder into two cavities capable of sealing the air;

(14) 4. designing a front connecting shaft at the front of the seamless steel tube (the air cylinder); and

(15) 5. designing a normal compression spring with a certain tension or injecting compressed air with a certain pressure or designing a standard air spring with a certain pressure between the piston and the front connecting shaft in the air cylinder, so that the piston can be pushed to lean against the inner side of the rear connecting shaft of the air cylinder, and thus a certain pre-pressure is formed.

(16) Working Procedure:

(17) 1. at a natural state, the volume of the air cylinder between the rear connecting shaft and the piston is 0; when air is injected through the air charging hole in the rear connecting shaft of the air cylinder and the pressure reaches 80 bar (a preset value) and exceeds the pressure of the piston, the piston moves forwards; when the pressure is gradually increased, the piston moves forwards further to form a relatively larger air storage space, and at this time, the air can be exhausted to fire a bullet without needing of much more air injection; and

(18) 2. when continuous bullet firing is required, it only needs to continuously inject air through the air charging hole till a set maximum pressure is achieved, and at this time, and the piston will continuously move forwards to form a relatively larger air storage space, thereby achieving an effect of continuously firing the bullets for multiple time.

(19) Due to the foregoing design, the saved energy of the compressed air in the air cylinder can be up to 20-30%, so that the practical efficiency of the compressed air in the air cylinder is largely improved.

(20) Unless otherwise indicated, the numerical ranges involved in the invention include the end values. While particular embodiments of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of the invention.