CN219655004U

CN219655004U - Cylinder

Info

Publication number: CN219655004U
Application number: CN202320361748.9U
Authority: CN
Inventors: 胡甜甜; 赛红帅
Original assignee: Chuzhou Best Intelligent Equipment Co ltd
Current assignee: Chuzhou Best Intelligent Equipment Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-09-08
Anticipated expiration: 2033-02-27

Abstract

The utility model discloses a cylinder. The cylinder comprises a cylinder body, a pneumatic control device and an executing device; wherein the execution device is at least partially arranged in the chamber in a sliding way so that the execution device can slide relative to the cylinder body along the stroke direction; only one piston slides in each chamber, and the piston is used for isolating the pressure gas in the chamber; the pneumatic control device is triggered by the piston to change the pressure gas to enter the air passage of the chamber, so that the executing device can perform reversing movement; the pneumatic control device comprises a first reversing valve and a second reversing valve; the first reversing valve is connected with the second reversing valve through an air passage; the first reversing valve delivers pressurized gas to the chamber and the second reversing valve is triggered by the piston such that the first reversing valve changes the flow of pressurized gas into the gas path of the chamber. The utility model solves the technical problem of low efficiency in the automatic reciprocation process of the air cylinder in the prior art.

Description

Cylinder

Technical Field

The utility model relates to the technical field of air cylinders, in particular to an air cylinder.

Background

In cylinder technology, a cylinder is an actuator that converts pressure energy in compressed air into mechanical energy.

For example, chinese patent document (CN 1289901A) describes a cylinder in which a piston is automatically reciprocated by a two-position five-way pilot operated directional valve in cooperation with a lever and a spring. However, the cylinder faces a remarkable problem, and the principle is that the piston is contacted with the spring to enable the deflector rod to change the air inlet direction of the pneumatic reversing valve, so that the piston is reversed, the reversing speed of the cylinder can not meet the working requirement in the use process, and meanwhile, the spring is easy to face the problem of fatigue damage, so that the service life of the cylinder is not high.

Therefore, in view of the above, there is a need for further improvements to the existing solutions to ensure the working efficiency of the cylinders.

Disclosure of Invention

The utility model mainly aims to provide a cylinder to solve the problem of low reversing efficiency of the cylinder in an automatic reciprocating process.

To achieve the above object, according to some embodiments of the present utility model, there is provided a cylinder including: a cylinder body forming a plurality of chambers and air passages; a pneumatic control device fixed to the cylinder for delivering pressurized gas into the chamber through the air passage; the actuating device comprises a piston rod and a plurality of pistons, and the pistons are sleeved on the piston rod; wherein the execution device is at least partially arranged in the chamber in a sliding way so that the execution device can slide relative to the cylinder body along the stroke direction; only one piston slides in each chamber, and the piston is used for isolating the pressure gas in the chamber; the pneumatic control device is triggered by the piston to change the pressure gas to enter the air passage of the chamber, so that the executing device can perform reversing movement; the pneumatic control device comprises a first reversing valve and a second reversing valve; the first reversing valve is connected with the second reversing valve through an air passage; the first reversing valve delivers pressurized gas to the chamber and the second reversing valve is triggered by the piston such that the first reversing valve changes the flow of pressurized gas into the gas path of the chamber.

Further, the cylinder includes: the middle seat is used for fixing the pneumatic control device and is provided with a first through hole for the piston rod to penetrate; a forming body forming a cylindrical passage for guiding the actuator to slide in the passage in the stroke direction; the end cover is used for preventing the pressure gas in the cylinder from leaking transversely, and a second through hole is formed to enable the piston rod to penetrate; wherein, the middle seat and the end cover are used for sealing the forming body to form a cavity; air passages are arranged in the middle seat, the forming body and the end cover so that pressure gas among different chambers can circulate mutually.

Further, at least a part of the actuator is configured as a revolution body having a central axis as a revolution axis, a plane passing through the revolution axis is defined as a first bisector, and the actuator is disposed symmetrically with respect to the first bisector.

Further, the cylinder body forms two chambers, and the piston rod is fixed with two pistons.

Further, the piston is sleeved with a sealing ring.

Further, the middle seat is provided with an air inlet for delivering the pressurized air to the first reversing valve.

Further, a second reversing valve is disposed between the two pistons.

Further, a groove is formed in the hole wall portion of the second through hole and used for installing the second-class sealing ring.

Further, the piston rod includes a first rod and a second rod formed with mounting grooves for fixing the piston; the mounting groove is sleeved with three types of sealing rings.

Further, the contact surface of the piston and the second reversing valve is defined as a reinforcing surface, and at least part of the reinforcing surface is made of stainless steel.

The utility model has the advantages that: a high efficiency self-commutating cylinder is provided.

More specifically, some embodiments of the present utility model may have the following specific benefits:

the first reversing valve is connected with the second reversing valve through an air passage; the first reversing valve conveys pressure gas to the chamber of the cylinder body, and the second reversing valve is triggered by the piston so that the first reversing valve changes the pressure gas to enter the air passage of the chamber of the cylinder body; the first reversing valve is driven by pressure gas to reverse to input gas into the cavity of the cylinder body, so that the mechanical loss is reduced, and the reversing efficiency is improved;

defining the contact surface of the piston and the second reversing valve as a strengthening surface, wherein at least part of the strengthening surface is made of stainless steel; by adopting the structure, when the piston is in contact with the second reversing valve, damage to the surface of the piston caused by impact is avoided;

the hole wall part of the second through hole is provided with a groove for installing a second type sealing ring, and the second type sealing ring is used for avoiding air leakage caused by the piston rod in the moving process of the second through hole, so that the stability of the air pressure in the cylinder is further ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the utility model and are not to be construed as unduly limiting the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of a cylinder according to an embodiment of the present utility model;

FIG. 2 is a schematic overall sectional structure of a cylinder according to an embodiment of the present utility model;

FIG. 3 is another cross-sectional structural schematic of a cylinder according to one embodiment of the present utility model;

FIG. 4 is a schematic view showing the overall structure of a middle seat of a cylinder according to an embodiment of the present utility model;

FIG. 5 is a schematic view of another view of the middle seat of the cylinder according to one embodiment of the present utility model;

FIG. 6 is a schematic view of the overall structure of a cylinder formed according to one embodiment of the present utility model;

FIG. 7 is a schematic view of the overall structure of an end cover of a cylinder according to one embodiment of the utility model;

FIG. 8 is a schematic view of a partial cross-sectional configuration of an end cap of a cylinder in cooperation with an actuator according to one embodiment of the utility model;

FIG. 9 is a schematic cross-sectional view of an actuator of a cylinder according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a cylinder in partial cross-section according to one embodiment of the utility model;

FIG. 11 is a schematic cross-sectional structural view of a mid-seat and pneumatic control device of a cylinder according to one embodiment of the present utility model;

FIG. 12 is a schematic view of another cross-sectional view of a mid-seat and pneumatic control device of a cylinder according to one embodiment of the present utility model;

reference numerals:

100. a cylinder;

200. a cylinder; 210. a chamber; 220. an airway;

230. a middle seat; 231. a first through hole; 232. an air inlet; 233. an exhaust port; 234. a first groove; 235. a seal ring;

240. forming a body; 241. a channel;

250. an end cap; 251. a second through hole; 252. a second groove; 253. a second type sealing ring;

300. a pneumatic control device; 310. a first reversing valve; 310a, a first valve core; 320. a second reversing valve; 320a, a second valve core;

400. an execution device; 410. a piston; 420. four types of sealing rings; 430. a piston rod; 430a, a first lever; 430b, a second rod; 440. a mounting groove; 450. three types of sealing rings; 400a, travel direction; 400b, central axis; 400c, vertical lines; 460. strengthening the surface.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

As shown in fig. 1 to 12, the cylinder 100 in the present embodiment includes a cylinder body 200, a pneumatic control device 300, and an actuator 400.

Wherein, referring to the structure of fig. 2 and 3, the cylinder 200 forms a plurality of chambers 210 and air passages 220; the air passage 220 is used for transmitting pressure air, and the pressure air can drive the actuator 400 to reciprocate in the chamber 210 and can also be used as driving force of the pneumatic control device 300. The cylinder 200 includes a middle seat 230, a plurality of forming bodies 240, and an end cap 250, the number of forming bodies 240 being equal to the number of chambers. Referring to fig. 4 to 5, the middle seat 230 is used to fix the air control device 300, and is formed with a first through hole 231 to allow the piston rod 430 to penetrate; the hole wall part of the first through hole 231 is provided with a first groove 234 for installing a sealing ring 235 of a type; the middle seat 230 is provided with an air inlet 232 for delivering pressure air to the first reversing valve 310, and two air outlets 233 for discharging the pressure air in the cylinder 100; specifically, the middle seat 230 is configured as a rectangular body, and is fixedly connected to the forming body 240 in a threaded manner. As shown in fig. 6, the forming body 240 is formed with a cylindrical passage 241, the passage 241 being substantially a revolution body, and the forming body 240 is for guiding the actuator 400 to slide in the stroke direction 400a in the passage 241. As shown in fig. 7 to 8, the end cap 250 is for preventing the lateral leakage of the pressure gas in the cylinder 100, and is formed with a second through hole 251 for the penetration of the piston rod 430, and a wall portion of the second through hole 251 is provided with a second groove 252 for mounting a second type seal ring 253.

Specifically, the center 230 and the end cap 250 are used to enclose the formation 240 to form the chamber 210. Only one piston 410 slides in each chamber 210, the piston 410 being used to block the pressure gas in the chamber 210; the middle seat 230, the forming body 240 and the end cover 250 are provided with air passages 220 therein to allow pressure gas between the different chambers 210 to flow through each other.

As shown in fig. 9 to 10, the actuator 400 includes a piston rod 430 and a plurality of pistons 410. Piston 410 is nested to piston rod 430; the pressure gas reciprocates the piston rod 430 in the stroke direction 400a by pushing the piston 410. The piston 410 is sleeved with four types of sealing rings 420. The piston rod 430 includes a first rod 430a and a second rod 430b, the first rod 430a and the second rod 430b being formed with a mounting groove 440 for fixing the piston 410; the mounting groove 440 is sleeved with three types of sealing rings 450. At least a part of the actuator 400 is configured as a revolution body with the central axis 400b as a revolution axis, a plane passing through the revolution axis is defined as a first bisector, and the actuator 400 is symmetrically disposed with respect to the first bisector; a line perpendicular to the central axis 400b is defined as a vertical line 400c, a plane passing through the vertical line 400c is defined as a second bisecting plane, and the actuator 400 is disposed symmetrically with respect to the second bisecting plane.

Specifically, the cylinder 200 of the present embodiment forms two chambers 210, and thus includes two forming bodies 240 respectively fixed to both sides of the middle seat 230, and the piston rod 430 is fixed with two pistons 410, and this structure increases the contact area between the pressurized gas and the pistons, so that the pistons can output double force.

Wherein the pneumatic control device 300 is fixed to the cylinder 200 for delivering pressurized gas into the chamber 210 through the gas passage 220.

The actuator 400 is at least partially slidably disposed in the chamber 210 such that the actuator 400 can slide along the stroke direction 400a relative to the cylinder 200; the pneumatic control device 300 is triggered by the piston 410 to change the pressure gas into the air passage 220 of the chamber 210, reversing the movement of the actuator 400.

In order to improve the operation efficiency of the cylinder 100, as shown in fig. 10 to 12, the pneumatic control device 300 includes a first direction valve 310 and a second direction valve 320; the first direction valve 310 is connected with the second direction valve 320 through the air passage 220; the first directional valve 310 delivers pressurized gas to the chamber 210 and the second directional valve 320 is triggered by the piston 410 such that the first directional valve 310 changes the pressurized gas into the gas passage 220 of the chamber 210. The first reversing valve 310 is driven by the pressure gas to reverse to input gas into the chamber 210, so that the mechanical loss is reduced, and the reversing efficiency is improved; the second directional valve 320 is disposed between the two pistons 410.

Specifically, the first directional valve 310 includes a first spool 310a, and the second directional valve 320 includes a second spool 320a. The second valve core 320a can reciprocate linearly under the action of the piston 410 as a contact member with the piston 410, and the second valve core 320a can make the compressed air in the valve core change the air passage 220 into the first reversing valve 310 and change the movement direction of the first valve core 310a by moving, so that the compressed air is changed into the air passage 220 of the chamber 210. The first reversing valve 310 and the second reversing valve 320 in the utility model are two-position five-way air control reversing valves.

The contact surface between the piston 410 and the second reversing valve 320 is defined as a strengthening surface 460, and at least part of the strengthening surface 460 is made of stainless steel. Since the piston 410 is in direct contact with the second valve element 320a during movement, abrasion is easily generated, and the service life of the piston 410 is affected, the reinforced surface 460 is made of stainless steel, so that damage to the surface of the piston 410 due to impact can be avoided.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A cylinder, comprising:

a cylinder body forming a plurality of chambers and air passages;

a pneumatic control device fixed to the cylinder body and delivering pressure gas into the chamber through the air passage;

the actuating device comprises a piston rod and a plurality of pistons, wherein the pistons are sleeved on the piston rod;

wherein the actuating device is at least partially arranged in the chamber in a sliding way so that the actuating device can slide relative to the cylinder body along the stroke direction; only one of the pistons slides in each chamber, and the pistons are used for isolating pressure gas in the chambers; the pneumatic control device is triggered by the piston to change the pressure gas to enter the air passage of the cavity so as to enable the executing device to perform reversing movement;

the method is characterized in that:

the pneumatic control device comprises a first reversing valve and a second reversing valve;

the first reversing valve is connected with the second reversing valve through an air passage; the first reversing valve delivers pressurized gas to the chamber and the second reversing valve is triggered by the piston to cause the first reversing valve to change the pressurized gas into the gas path of the chamber.

2. The cylinder according to claim 1, wherein:

the cylinder includes:

the middle seat is used for fixing the pneumatic control device and is provided with a first through hole for the piston rod to penetrate;

a forming body forming a cylindrical passage for guiding the actuator to slide in a stroke direction within the passage;

the end cover is used for preventing the pressure gas in the cylinder from leaking transversely, and a second through hole is formed to enable the piston rod to penetrate;

wherein, the middle seat and the end cover are used for sealing the forming body to form a cavity; and air passages are arranged in the middle seat, the forming body and the end cover so that pressure gas among different chambers can circulate mutually.

3. The cylinder according to claim 2, characterized in that:

at least a part of the actuator is configured as a revolution body with the central axis as a revolution axis, a plane passing through the revolution axis is defined as a first bisector, and the actuator is symmetrically arranged relative to the first bisector.

4. A cylinder according to claim 2 or 3, characterized in that:

the cylinder body forms two chambers, and the piston rod is fixed with two pistons.

5. The cylinder as set forth in claim 4, wherein:

the piston rod comprises a first rod and a second rod, and the first rod and the second rod are provided with mounting grooves for fixing the piston; the mounting groove is sleeved with three types of sealing rings.

6. The cylinder according to claim 5, wherein:

the middle seat is provided with an air inlet for conveying pressure gas to the first reversing valve.

7. The cylinder as set forth in claim 6, wherein:

the second reversing valve is arranged between the two pistons.

8. The cylinder as set forth in claim 7, wherein:

and a groove is formed in the hole wall part of the second through hole and used for installing the second type sealing ring.

9. The cylinder as set forth in claim 8, wherein:

the piston is sleeved with a sealing ring.

10. The cylinder as set forth in claim 9, wherein:

the contact surface of the piston and the second reversing valve is defined as a strengthening surface, and at least part of the strengthening surface is made of stainless steel.