CN218294042U

CN218294042U - Cylinder

Info

Publication number: CN218294042U
Application number: CN202222500285.8U
Authority: CN
Inventors: 付艺彤
Original assignee: Suzhou Huomiao Automation Technology Co ltd
Current assignee: Suzhou Huomiao Automation Technology Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-01-13
Anticipated expiration: 2032-09-21

Abstract

The utility model relates to the technical field of pneumatic elements, in particular to a cylinder, which comprises a cylinder body, wherein a hollow installation cavity is arranged on the cylinder body, and an air inlet hole communicated with the installation cavity is arranged on the cylinder body; the piston assembly is arranged in the mounting cavity, one end of the piston assembly extends out relative to the cylinder body, and the air inlet hole is positioned in the rodless cavity of the mounting cavity; the guide end cover is sleeved on the piston assembly and is connected with the cylinder body; the compression elastic piece is arranged between the piston assembly and the guide end cover; and the rotating structure is arranged between the guide end cover and the piston assembly, and the piston assembly can rotate along a set direction while moving relative to the guide end cover. The utility model discloses when can reduce the piping arrangement complexity, can keep the position of piston withdrawal.

Description

Cylinder

Technical Field

The utility model relates to a pneumatic element technical field especially relates to a cylinder.

Background

In the field of automation control, cylinders play a very important role. In the prior art, the working principle of the air cylinder is generally to control the extension or retraction of a piston rod of the air cylinder through air pressure so as to realize a specific function. In the rotary cylinder, the piston rod can rotate while performing telescopic motion relative to the cylinder body, and the existing rotary cylinder realizes the extension and retraction of the piston by controlling one path of air intake of the air passage and the other path of air return of the air passage.

Therefore, a cylinder is required to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cylinder can keep the position that the piston rod withdrawed when reducing the piping arrangement complexity.

To achieve the purpose, the utility model adopts the following technical proposal:

a cylinder, comprising:

the cylinder body is provided with a hollow mounting cavity, and the cylinder body is provided with an air inlet communicated with the mounting cavity;

the piston assembly is arranged in the mounting cavity, one end of the piston assembly extends out relative to the cylinder body, and the air inlet is positioned in the rodless cavity of the mounting cavity;

the guide end cover is sleeved on the piston assembly and is connected with the cylinder body;

the compression elastic piece is arranged between the piston assembly and the guide end cover, one end of the compression elastic piece is abutted against the guide end cover, and the other end of the compression elastic piece is abutted against the piston assembly;

the rotating structure is arranged between the guide end cover and the piston assembly, and the piston assembly can rotate along a set direction while moving relative to the guide end cover.

Further, the piston assembly comprises a piston rod and a sealing ring, the sealing ring is sleeved on the piston rod, the piston rod is arranged in the installation cavity in a penetrating mode, one end of the piston rod penetrates through the guide end cover to extend out, and the compression elastic piece is sleeved on the piston rod.

Furthermore, the piston rod is convexly provided with a first annular shaft shoulder, and one end of the compression elastic piece is abutted to the first annular shaft shoulder.

Furthermore, the piston rod epirelief is equipped with second annular shaft shoulder, second annular shaft shoulder with first annular shaft shoulder interval sets up and forms the mounting ring groove, the sealing washer sets up in the mounting ring groove, and it is relative first annular shaft shoulder and second annular shaft shoulder protrusion.

The sensor assembly is arranged between the cylinder body and the piston rod and used for acquiring signals of the action of the piston rod relative to the cylinder body.

Further, the sensor assembly comprises a magnet and a check washer, the magnet and the check washer are both arranged on the piston rod, and the check washer is used for supporting and limiting the position of the magnet on the piston rod.

Further, the rotating structure comprises a rolling pin, a first spiral groove rotating in a first rotating direction and a second spiral groove rotating in a second rotating direction opposite to the first rotating direction are formed in the piston rod, a first positioning hole opposite to the first spiral groove and a second positioning hole opposite to the second spiral groove are formed in the side surface of the guide end cover, and the rolling pin is selectively inserted into the first positioning hole or the second positioning hole.

Further, the installation structure is arranged between the guide end cover and the cylinder body and used for fixing the guide end cover on the cylinder body.

Furthermore, the mounting structure comprises a positioning bolt, a first mounting hole is formed in the end face of the guide end cover, a second mounting hole opposite to the first mounting hole is formed in the cylinder body, and the positioning bolt penetrates through the first mounting hole and is in threaded connection with the second mounting hole.

Further, mounting structure includes the jackscrew, set up threaded hole on the side of direction end cover, the jackscrew with the screw hole spiro union, and with the cylinder block butt.

The utility model has the advantages that:

the utility model provides a cylinder, piston assembly sets up in the cylinder block, and the relative cylinder block of piston assembly one end stretches out, be provided with the direction end cover on the cylinder block, be provided with revolution mechanic between direction end cover and piston assembly, it is rotatory along setting for the direction to make piston assembly, be provided with the compression elastic component between piston assembly and direction end cover, when the relative cylinder block of piston assembly stretches out, the compression elastic component is compressed and is carried out the energy storage, when the relative cylinder block of piston assembly retracts, the compression elastic component is under the effect of self restoring force, promote piston assembly and reset, and make piston assembly keep the position of withdrawal at the effect of elasticity. And through the cooperation of elastic component and compressed air, only need arrange the pipeline of admitting air all the way, need not to arrange the pipeline of returning the air, can realize that piston assembly stretches out or retracts, reduce the complexity that the pipeline was arranged.

Drawings

Fig. 1 is a front view of a cylinder according to the present invention;

fig. 2 is an exploded view of a cylinder according to the present invention;

FIG. 3 isbase:Sub>A view taken along line A-A of FIG. 1;

fig. 4 is a schematic view of a cylinder according to the present invention;

fig. 5 is a partially exploded view of a cylinder according to the present invention.

In the figure:

1. a cylinder block; 11. a mounting cavity; 12. an air inlet; 13. fixing grooves; 14. a second mounting hole; 2. a piston assembly; 21. a piston rod; 211. a first annular shoulder; 212. a second annular shoulder; 213. a first helical groove; 214. a second helical groove; 22. a seal ring; 3. a guide end cover; 31. a first positioning hole; 32. a second positioning hole; 4. compressing the elastic member; 5. a sensor assembly; 51. a lock washer; 52. a magnet; 6. rolling a pin; 7. positioning the bolt; 8. and (5) jacking the screw.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements relevant to the present invention are shown in the drawings.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection or a detachable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

When using the cylinder, in order to can reduce the piping arrangement complexity while, can keep the position that the piston rod withdrawed, as shown in fig. 1-5, the utility model provides a cylinder. The cylinder comprises a cylinder body 1, a piston assembly 2, a guide end cover 3, a compression elastic piece 4 and a rotating structure.

Wherein, the cylinder block 1 is provided with a hollow mounting cavity 11, and the cylinder block 1 is provided with an air inlet 12 communicated with the mounting cavity 11; the piston assembly 2 is arranged in the mounting cavity 11, one end of the piston assembly extends out relative to the cylinder body 1, and the air inlet 12 is positioned in a rodless cavity of the mounting cavity 11; the guide end cover 3 is sleeved on the piston assembly 2 and is connected with the cylinder body 1; the compression elastic piece 4 is arranged between the piston assembly 2 and the guide end cover 3, one end of the compression elastic piece 4 is abutted against the guide end cover 3, and the other end of the compression elastic piece 4 is abutted against the piston assembly 2; the rotating structure is arranged between the guide end cover 3 and the piston assembly 2, and the piston assembly 2 can rotate along the set direction while moving relative to the guide end cover 3.

When the piston assembly 2 extends relative to the cylinder block 1, the compression elastic piece 4 is compressed to store energy, and when the piston assembly 2 retracts relative to the cylinder block 1, the compression elastic piece 4 pushes the piston assembly 2 to reset under the action of self restoring force, and the piston assembly 2 keeps the retracted position under the action of elastic force. And through the cooperation of elastic component and compressed air, only need arrange the pipeline of an inlet air, need not to arrange the pipeline of returning the gas, can realize that piston assembly 2 stretches out or retracts, reduce the complexity that the pipeline was arranged.

Further, the piston assembly 2 includes a piston rod 21 and a sealing ring 22, the sealing ring 22 is sleeved on the piston rod 21, the piston rod 21 is inserted into the mounting cavity 11, one end of the piston rod 21 passes through the guide end cap 3 to extend out, and the compression elastic member 4 is sleeved on the piston rod 21. Specifically, in the present embodiment, the compression elastic member 4 is a compression spring, and the compression spring is sleeved on the piston rod 21 to perform a resetting function. The piston rod 21 is provided with a seal ring 22, and the seal ring 22 seals a gap between the piston rod 21 and the cylinder block 1, so that air leakage is prevented, and the piston rod 21 cannot move smoothly.

Further, a first annular shoulder 211 is projected from the piston rod 21, and one end of the compression elastic member 4 abuts against the first annular shoulder 211. By providing the first annular shoulder 211, it is convenient to install the compression elastic member 4 on the piston rod 21, and at the same time, the elastic force of the compression elastic member 4 acts on the piston rod 21, so as to reset the piston rod 21.

Further, a second annular shoulder 212 is convexly arranged on the piston rod 21, the second annular shoulder 212 and the first annular shoulder 211 are arranged at intervals to form a mounting ring groove, and the sealing ring 22 is arranged in the mounting ring groove and protrudes relative to the first annular shoulder 211 and the second annular shoulder 212. Specifically, in this embodiment, the second annular shoulder 212 is located below the first annular shoulder 211, and the mounting ring groove formed by the first annular shoulder 211 and the second annular shoulder 212 can limit the position of the sealing ring 22 on the piston rod 21, so that the position of the sealing ring 22 on the piston rod 21 is defined, and a good sealing effect can be achieved in the process of the movement of the piston rod 21.

Further, the cylinder further comprises a sensor assembly 5, and the sensor assembly 5 is disposed between the cylinder block 1 and the piston rod 21 and is used for acquiring a signal of the motion of the piston rod 21 relative to the cylinder block 1. Through setting up sensor assembly 5, can gather the motion signal of piston rod 21 to judge whether the piston rod 21 moves in place, be convenient for realize the automation.

Further, the sensor assembly 5 includes a magnet 52 and a lock washer 51, the magnet 52 and the lock washer 51 are both disposed on the piston rod 21, and the lock washer 51 is used to support and define the position of the magnet 52 on the piston rod 21. Specifically, a magnetic signal is used as the induced signal. In this embodiment, a fixing groove 13 of a magnetic switch is opened on the cylinder block 1 along the moving direction of the piston rod 21, the magnetic switch is disposed on the fixing groove 13, a signal of the magnet 52 is collected, and the collected signal is sent to the controller, so as to perform a motion detection function on the piston rod 21. To secure the position of the magnet 52 on the piston rod 21, a locking washer 51 is riveted to the piston rod 21.

Further, the rotating structure includes a roller pin 6, the piston rod 21 is provided with a first spiral groove 213 rotating in a first rotating direction and a second spiral groove 214 rotating in a second rotating direction opposite to the first rotating direction, the side surface of the guide end cap 3 is provided with a first positioning hole 31 opposite to the first spiral groove 213 and a second positioning hole 32 opposite to the second spiral groove 214, and the roller pin 6 is selectively inserted into the first positioning hole 31 or the second positioning hole 32. When the roller pin 6 is inserted into the first positioning hole 31, the roller pin 6 is engaged with the first spiral groove 213, so that the piston rod 21 rotates along the first spiral groove 213 during the movement; when the roller pin 6 is inserted into the second positioning hole 32, the roller pin 6 is matched with the second spiral groove 214, so that the piston rod 21 rotates along the second spiral groove 214 in the moving process, the effect of linear motion and rotation is achieved, and the effect of combined motion of rotation and linear motion is achieved by the aid of the cylinder at a small installation position.

Further, the cylinder further comprises a mounting structure, and the mounting structure is arranged between the guide end cover 3 and the cylinder block 1 and is used for fixing the guide end cover 3 on the cylinder block 1. Specifically, the guide end cover 3 is in threaded connection with the cylinder block 1, and then is fixed by using the mounting structure, so that the guide end cover 3 is stably connected with the cylinder block 1.

Further, the mounting structure comprises a positioning bolt 7, a first mounting hole is formed in the end face of the guide end cover 3, a second mounting hole 14 opposite to the first mounting hole is formed in the cylinder block 1, and the positioning bolt 7 penetrates through the first mounting hole and is in threaded connection with the second mounting hole 14. The guide end cap 3 is further fixed to the cylinder block 1 by means of a positioning bolt 7. In order to further improve the connection strength between the guide end cover 3 and the cylinder block 1, a plurality of first mounting holes may be formed at intervals in the circumferential direction of the end surface of the guide end cover 3, a plurality of second mounting holes 14 may be correspondingly formed in the cylinder block 1, and the guide end cover 3 and the cylinder block 1 may be connected by a plurality of positioning bolts 7.

Of course, the mounting structure may also adopt the following structure: mounting structure includes jackscrew 8, offers threaded hole on the side of direction end cover 3, jackscrew 8 and threaded hole spiro union, and with 1 butt of cylinder block. The guide end cover 3 and the cylinder block 1 are fixed by the jackscrew 8, so that the fixing effect can be achieved.

Further, the end face of the piston rod 21 at the end projecting from the cylinder block 1 may be formed in a quadrangular shape, thereby achieving a positioning effect when connected to other components.

The cylinder that this embodiment provided, the size is less, simple structure moreover, and the integrated level is high, satisfies the user demand of automatic occasion well.

It is obvious that the above embodiments of the present invention are only 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. This need not be, nor should it be 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

1. A cylinder, characterized by comprising:

the cylinder body (1) is provided with a hollow mounting cavity (11), and the cylinder body (1) is provided with an air inlet hole (12) communicated with the mounting cavity (11);

the piston assembly (2) is arranged in the mounting cavity (11), one end of the piston assembly (2) extends out relative to the cylinder body (1), and the air inlet hole (12) is located in a rodless cavity of the mounting cavity (11);

the guide end cover (3) is sleeved on the piston assembly (2) and is connected with the cylinder body (1);

the compression elastic piece (4), the compression elastic piece (4) is arranged between the piston assembly (2) and the guide end cover (3), one end of the compression elastic piece (4) is abutted against the guide end cover (3), and the other end of the compression elastic piece (4) is abutted against the piston assembly (2);

the rotating structure is arranged between the guide end cover (3) and the piston assembly (2), and the piston assembly (2) can rotate along a set direction while moving relative to the guide end cover (3).

2. The cylinder according to claim 1, wherein the piston assembly (2) comprises a piston rod (21) and a sealing ring (22), the sealing ring (22) is sleeved on the piston rod (21), the piston rod (21) is arranged in the installation cavity (11) in a penetrating manner, one end of the piston rod (21) penetrates through the guide end cover (3) to extend out, and the compression elastic member (4) is sleeved on the piston rod (21).

3. The cylinder according to claim 2, characterized in that the piston rod (21) is provided with a first annular shoulder (211) protruding thereon, and one end of the compression spring (4) abuts against the first annular shoulder (211).

4. The cylinder according to claim 3, wherein a second annular shoulder (212) is protruded from the piston rod (21), the second annular shoulder (212) is spaced apart from the first annular shoulder (211) to form a mounting groove, and the sealing ring (22) is disposed in the mounting groove and protruded relative to the first annular shoulder (211) and the second annular shoulder (212).

5. The cylinder according to claim 2, characterized by further comprising a sensor assembly (5), said sensor assembly (5) being arranged between said cylinder block (1) and said piston rod (21) for acquiring a signal of the movement of said piston rod (21) with respect to said cylinder block (1).

6. The cylinder according to claim 5, characterized in that the sensor assembly (5) comprises a magnet (52) and a check washer (51), the magnet (52) and the check washer (51) being both arranged on the piston rod (21), the check washer (51) being used to support and define the position of the magnet (52) on the piston rod (21).

7. The cylinder according to claim 2, wherein the rotating structure comprises a rolling pin (6), the piston rod (21) is provided with a first spiral groove (213) rotating in a first rotating direction and a second spiral groove (214) rotating in a second rotating direction opposite to the first rotating direction, the side surface of the guide end cover (3) is provided with a first positioning hole (31) opposite to the first spiral groove (213) and a second positioning hole (32) opposite to the second spiral groove (214), and the rolling pin (6) is selectively inserted into the first positioning hole (31) or the second positioning hole (32).

8. The cylinder according to claim 1, further comprising a mounting structure provided between the guide end cap (3) and the cylinder block (1) for fixing the guide end cap (3) to the cylinder block (1).

9. The cylinder according to claim 8, wherein the mounting structure comprises a positioning bolt (7), a first mounting hole is formed in an end face of the guide end cover (3), a second mounting hole (14) opposite to the first mounting hole is formed in the cylinder block (1), and the positioning bolt (7) penetrates through the first mounting hole and is in threaded connection with the second mounting hole (14).

10. The cylinder according to claim 8, characterized in that the mounting structure comprises a jackscrew (8), a threaded hole is opened on the side surface of the guide end cover (3), and the jackscrew (8) is in threaded connection with the threaded hole and is abutted with the cylinder block (1).