Double-piston long-stroke standard linear cylinder

Abstract

The utility model discloses a standard linear cylinder with double pistons and long stroke, which relates to the technical field of cylinders and comprises an outer cylinder body, an outer integrated piston cylinder rod and an inner integrated piston rod, a front cylinder cover and a rear cylinder cover are respectively fixed at the front end and the rear end of the outer cylinder body, and a second air inlet and outlet end is arranged outside the front cylinder cover and communicated with the inside of the outer cylinder body. The outer integrated piston air cylinder rod penetrates through the rear air cylinder cover to enter the outer cylinder body, and a second dustproof ring and a fourth guide ring are connected to the front and the back of the end face, making contact with the outer integrated piston air cylinder rod, of the inner wall of the rear air cylinder cover in a sleeved mode respectively. According to the device, the outer cylinder body, the outer integrated piston cylinder rod and the inner integrated piston rod form a multi-section telescopic cylinder, compared with a standard cylinder, the cylinder of the device is shorter and can be conveniently installed in a smaller space, the execution stroke of the cylinder is long, compared with the execution length of the standard cylinder, the execution length of the cylinder is twice that of the standard cylinder, and the length requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cylinder, especially to a double-piston long-stroke standard linear cylinder. BACKGROUND

[0002] Linear cylinder is a device that converts gas compression into linear motion. This cylinder is usually driven by gas, hydraulic pressure or motor, and is a commonly used power element in mechanical equipment, widely used in various machinery and industrial equipment, such as automated production lines, assembly lines, conveying systems, robots, etc.

[0003] The existing linear cylinder is composed of a cylinder body, a piston and a piston rod. When gas enters the cylinder body, the piston will move forward or backward, thereby realizing linear transmission. Linear cylinder realizes the linear reciprocating motion of the piston by the in-out of compressed air, thereby converting pneumatic energy into mechanical energy to drive the equipment to work.

[0004] The existing linear cylinder has a relatively large length in the direction of the cylinder under the condition of a relatively long stroke, and requires a relatively large space around the site. If the space around the site is limited, the installation and use of the cylinder may be restricted.

[0005] Therefore, it is necessary to design a double-piston long-stroke standard linear cylinder with a relatively short size and a length that meets the requirements to solve the above problems. SUMMARY

[0006] The utility model provides a double-piston long-stroke standard linear cylinder, which solves the above technical problems.

[0007] To solve the above technical problems, the utility model provides a kind of double-piston long-stroke standard linear cylinder, including outer cylinder body, outer integrated piston cylinder rod and inner integrated piston rod, the outer cylinder body front and rear end is respectively fixed with front cylinder cover and rear cylinder cover, wherein the front cylinder cover outside is equipped with inlet-outlet end two and outer cylinder body inside intercommunication, rear cylinder cover top is equipped with inlet-outlet end three and outer cylinder body inside intercommunication, the outer integrated piston cylinder rod passes through rear cylinder cover and enters into the inside of outer cylinder body, rear cylinder cover inner wall and outer integrated piston cylinder rod contact end face front and rear are respectively sleeved with dustproof ring two and guide ring four, the inside of rear cylinder cover is equipped with gas delivery channel two and outer cylinder body inside intercommunication, the outside of outer integrated piston cylinder rod piston portion both sides is sleeved with O ring one, two O ring one is sleeved with guide ring one, the inside of front cylinder cover is equipped with gas delivery channel one and inlet-outlet end two and outer integrated piston cylinder rod inside intercommunication, the front of outer integrated piston cylinder rod is equipped with inlet-outlet end one and inside intercommunication, and inlet-outlet end one is also communicated with gas delivery channel two, the inside of outer integrated piston cylinder rod is inserted with inner integrated piston rod, the outside of inner integrated piston rod piston portion both sides is sleeved with O ring two, two the O ring two is sleeved with guide ring three, the rear of outer integrated piston cylinder rod is fixed with snap spring and inner integrated piston rod piston portion contact, the front of outer integrated piston cylinder rod is sleeved with dustproof ring one with inner integrated piston rod contact end, guide ring two is sleeved with dustproof ring one position.

[0008] Preferably, the inlet-outlet end two and the inlet-outlet end three are connected with the external air pump through a hose.

[0009] Preferably, the outer cylinder body, the outer integrated piston cylinder rod and the inner integrated piston rod form a telescopic cylinder.

[0010] Compared with the related art, the utility model provides a kind of double-piston long-stroke standard linear cylinder with the following beneficial effects:

[0011] The utility model provides, and the device is composed of outer cylinder body, outer integrated piston cylinder rod and inner integrated piston rod, and the device cylinder is shorter than standard cylinder length, is installed in smaller space, and cylinder execution stroke is long, compared with the execution length of standard cylinder, the execution length of the cylinder is twice, satisfies length demand.

[0012] The utility model provides, cylinder action is reliable, and the piston of linear motion is equipped with guide ring, guarantees the stability of movement.

[0013] The utility model provides, and two pistons are equipped with dustproof ring, prevent dust from going into cylinder and clean the dirt of inner integrated piston rod and outer integrated piston cylinder rod simultaneously. ACCURACY OF DRAWINGS

[0014] Figure 1 is a sectional view of the double-piston long-stroke standard linear cylinder according to the present application;

[0015] Figure 2 is a partially extended view of the double-piston long-stroke standard linear cylinder according to the present application;

[0016] Figure 3 is a fully extended view of the double-piston long-stroke standard linear cylinder according to the present application;

[0017] Figure 4 is a partially retracted view of the double-piston long-stroke standard linear cylinder according to the present application;

[0018] Figure 5 is a fully retracted view of the double-piston long-stroke standard linear cylinder according to the present application.

[0019] In the figure, 1 is an outer cylinder body, 2 is an outer integrated piston cylinder rod, 21 is an O-ring 1, 22 is a guide ring 1, 23 is an air inlet / outlet end 1, 24 is a dustproof ring 1, 25 is a guide ring 2, 3 is an inner integrated piston rod, 31 is a clasp spring, 32 is an O-ring 2, 33 is a guide ring 3, 4 is a front cylinder cover, 41 is an air inlet / outlet end 2, 42 is a gas conveying channel 1, 5 is a rear cylinder cover, 51 is an air inlet / outlet end 3, 52 is a guide ring 4, 53 is a dustproof ring 2, and 54 is a gas conveying channel 2. DETAILED DESCRIPTION

[0020] Example 1, which comprises a double-piston long-stroke standard linear cylinder according to the present application, Figures 1-5The utility model provides a kind of double-piston long-stroke standard linear cylinder, including outer cylinder body 1, outer integrated piston cylinder rod 2 and inner integrated piston rod 3, outer cylinder body 1 front and rear end is respectively fixed with front cylinder cover 4 and rear cylinder cover 5, wherein front cylinder cover 4 outside is set with inlet and outlet air end two 41 with the inside of outer cylinder body 1 communication, rear cylinder cover 5 top is set with inlet and outlet air end three 51 with the inside of outer cylinder body 1 communication, outer integrated piston cylinder rod 2 penetrates rear cylinder cover 5 and enters the inside of outer cylinder body 1, rear cylinder cover 5 inner wall and outer integrated piston cylinder rod 2 contact end face are respectively sleeved with dustproof ring two 53 and guide ring four 52, rear cylinder cover 5 inside is set with gas delivery channel two 54 with the inside of outer cylinder body 1 communication, outer integrated piston cylinder rod 2 piston part outside both sides are sleeved with O ring one 21, two O ring one 21 are sleeved with guide ring one 22, front cylinder cover 4 inside is set with gas delivery channel one 42 with inlet and outlet air end two 41 and outer integrated piston cylinder rod 2 inside communication, outer integrated piston cylinder rod 2 front is set with inlet and outlet air end one 23 with inside communication, and inlet and outlet air end one 23 also with gas delivery channel two 54 cooperation communication, outer integrated piston cylinder rod 2 inside is inserted with inner integrated piston rod 3, and inner integrated piston rod 3 piston part outside both sides are sleeved with O ring two 32, two O ring two 32 are sleeved with guide ring three 33, outer integrated piston cylinder rod 2 inner rear portion is fixed with snap spring 31 and inner integrated piston rod 3 piston part contact, outer integrated piston cylinder rod 2 front portion and inner integrated piston rod 3 contact inner end are sleeved with dustproof ring one 24, and dustproof ring one 24 position is sleeved with guide ring two 25.

[0021] In the embodiment, the inlet and outlet air end two 41 and the inlet and outlet air end three 51 are connected with the external air pump through a hose.

[0022] In the embodiment, the outer cylinder body 1, the outer integrated piston cylinder rod 2 and the inner integrated piston rod 3 constitute a telescopic cylinder.

[0023] Working principle:

[0024] When working, the compressed gas is filled and discharged by controlling the external air pump;

[0025] Opening step (cylinder rod is completely stretched out):

[0026] The inlet and outlet air end two 41 is connected with the compressed air to the inside of the outer cylinder body 1, and the outer integrated piston cylinder rod 2 moves to the left, and at the same time, the inlet and outlet air end three 51 discharges the compressed air remaining in the inside of the outer cylinder body 1 on the left side, until the piston of the outer integrated piston cylinder rod 2 collides with the wall of the left outer cylinder body 1; next, the inlet and outlet air end two 41 continues to connect with the compressed air, the compressed air enters the inside of the outer integrated piston cylinder rod 2, and drives the inner integrated piston rod 3 to move to the left, and at the same time, the inlet and outlet air end one 23 discharges the compressed air remaining in the outer integrated piston cylinder rod 2, until the piston of the inner integrated piston rod 3 collides with the wall of the outer integrated piston cylinder rod 2, and thus the cylinder is completely opened.

[0027] Close step (cylinder rod fully extended):

[0028] The third air inlet and outlet end 51 is connected to compressed air, and the outer integrated piston cylinder rod 2 moves to the right. At the same time, the second air inlet and outlet end 41 discharges the compressed air retained in the right side of the outer cylinder body 1, until the piston of the outer integrated piston cylinder rod 2 hits the left wall of the outer cylinder body 1. The third air inlet and outlet end 51 continues to be connected to compressed air, and the compressed air is input to the first air inlet and outlet end 23 through the gas channel 54, thereby being connected to the inside of the outer integrated piston cylinder rod, pushing the inner integrated piston rod 3 to move to the right, and at the same time, the second air inlet and outlet end 41 discharges the compressed air retained in the outer integrated piston cylinder rod 2, until the piston of the inner integrated piston rod 3 hits the snap spring 31 of the outer integrated piston cylinder rod 2, and the cylinder is completely closed.

Claims

1. A double-piston long-stroke standard straight cylinder comprising an outer cylinder (1), an outer integrated piston cylinder rod (2) and an inner integrated piston rod (3), characterized in that: The outer cylinder body (1) is respectively fixed with front cylinder cover (4) and rear cylinder cover (5) at front and rear ends, wherein the outer cylinder cover (4) is provided with inlet and outlet end two (41) on the outside and communicated with the inside of the outer cylinder body (1), the top of the rear cylinder cover (5) is provided with inlet and outlet end three (51) and communicated with the inside of the outer cylinder body (1), the outer integrated piston cylinder rod (2) penetrates the rear cylinder cover (5) and enters the inside of the outer cylinder body (1), the inner wall of the rear cylinder cover (5) is respectively sleeved with dustproof ring two (53) and guide ring four (52) at the front and rear of the contact end surface of the outer integrated piston cylinder rod (2), the inside of the rear cylinder cover (5) is provided with gas conveying channel two (54) and communicated with the inside of the outer cylinder body (1), the outside of the piston part of the outer integrated piston cylinder rod (2) is sleeved with O-shaped ring one (21) at both sides, guide ring one (22) is sleeved between the two O-shaped ring one (21), the inside of the front cylinder cover (4) is provided with gas conveying channel one (42) and communicated with inlet and outlet end two (41) and the inside of the outer integrated piston cylinder rod (2), the front part of the outer integrated piston cylinder rod (2) is provided with inlet and outlet end one (23) and communicated with the inside, and inlet and outlet end one (23) is also communicated with gas conveying channel two (54), the inside of the outer integrated piston cylinder rod (2) is inserted with inner integrated piston rod (3), the outside of the piston part of the inner integrated piston rod (3) is sleeved with O-shaped ring two (32) at both sides, guide ring three (33) is sleeved between the two O-shaped ring two (32), the inner rear part of the outer integrated piston cylinder rod (2) is fixed with clamp spring (31) and contacted with the piston part of the inner integrated piston rod (3), the front part of the outer integrated piston cylinder rod (2) is sleeved with dustproof ring one (24) at the contact inner end of the inner integrated piston rod (3), guide ring two (25) is sleeved near the position of dustproof ring one (24).

2. A dual piston long stroke standard linear cylinder according to claim 1, characterized in that, The inlet and outlet end two (41) and the inlet and outlet end three (51) are connected with the external air pump through the hose.

3. A dual piston long stroke standard linear cylinder according to claim 1, wherein, The outer cylinder body (1), the outer integrated piston cylinder rod (2) and the inner integrated piston rod (3) constitute a multi-section telescopic cylinder.

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