CN218063600U - Compact pneumatic actuator - Google Patents

Abstract

The utility model relates to a pneumatic actuator field discloses a compact pneumatic actuator, including cylinder body and last cylinder cap and the lower cylinder cap of setting at the cylinder body both ends, the lower cylinder cap internal rotation is provided with the dwang, is provided with the promotion subassembly that is used for driving the dwang along the reciprocal slide of cylinder body axis direction in the cylinder body, the guide way has been seted up to the spiral on the dwang, the cylinder body internal fixation is provided with the spacer pin, and the spacer pin keep away from the one end setting of cylinder body inside wall in the guide way and with guide way sliding fit. The sliding fit that this application has and can pass through spiral guide way and spacer pin for compact pneumatic actuator can provide rotary motion like angle stroke pneumatic actuator, can occupy less horizontal space like straight stroke pneumatic actuator again, reaches to improve the great effect of angle stroke pneumatic actuator occupation horizontal space.

Description

Compact pneumatic actuator

Technical Field

The present application relates to the field of pneumatic actuators, and more particularly, to a compact pneumatic actuator.

Background

Pneumatic actuators, including straight-stroke pneumatic actuators and angular-stroke pneumatic actuators, are of paramount importance in modern industry. The straight stroke pneumatic actuating mechanism pushes the piston or the film to drive the push rod to do linear motion through gas, and the angular stroke pneumatic actuating mechanism pushes the piston or the film to drive the shifting fork to do rotary motion through gas.

At present, the commonly used pneumatic actuating mechanisms are limited to the two types, and the width of the straight-stroke pneumatic actuating mechanism is smaller than that of the pneumatic actuating mechanism with the same cylinder diameter and angle stroke under the common condition. The angular stroke actuator generally requires a large horizontal space, which is disadvantageous in environments where horizontal space is limited, and therefore it is desirable to provide a compact actuator that can provide both rotational motion as a linear stroke pneumatic actuator and occupy a small horizontal space as a linear stroke pneumatic actuator.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the horizontal space occupied by the angular travel pneumatic actuator is large, the application provides a compact pneumatic actuator.

The application provides a compact pneumatic actuator adopts following technical scheme:

the utility model provides a compact pneumatic actuator, includes the cylinder body and sets up last cylinder cap and lower cylinder cap at cylinder body both ends, the cylinder cap internal rotation is provided with the dwang down, be provided with in the cylinder body and be used for driving the dwang along the reciprocal promotion subassembly that slides of cylinder body axis direction, the guide way has been seted up to the spiral on the dwang, the cylinder body internal fixation is provided with the spacer pin, just the one end setting that the cylinder body inside wall was kept away from to the spacer pin is in the guide way and with guide way sliding fit.

Through adopting above-mentioned technical scheme, at pneumatic actuator at the operation in-process, promote subassembly drive dwang and carry out reciprocating motion along cylinder body axis direction, the dwang is at the sliding fit who removes the in-process through spiral guide way and spacer pin for the dwang carries out reciprocating motion when reciprocating motion. So set up for compact pneumatic actuator can provide rotary motion like angle stroke pneumatic actuator, can occupy less horizontal space like the pneumatic actuator of straight stroke again.

Preferably, promote the subassembly including impel piston, push rod, inlet port and elasticity piece that resets, impel the piston to slide along cylinder body axial direction and set up in the cylinder body, the inlet port is seted up in last cylinder cap and is used for being connected in order to promote to impel the piston to move with outside air feeder, the push rod sets up the one end of keeping away from the inlet port at impel the piston, just the dwang rotates and sets up on the push rod, elasticity resets and sets up on lower cylinder cap and is used for the drive dwang to reset.

By adopting the technical scheme, the external gas supply equipment fills gas into the cylinder body through the gas inlet hole, the gas filled into the cylinder body pushes the propelling piston to move, and the propelling piston pushes the rotating rod to move towards the outside of the cylinder body through the push rod; outside air supply equipment stops to aerifing, and the elasticity piece that resets acts on the dwang this moment for the dwang removes and resets, thereby realizes the reciprocating motion of dwang.

Preferably, the rotating rod is provided with a push disc, one end of the elastic reset piece is abutted against the lower cylinder cover, and the other end of the elastic reset piece is abutted against the push disc.

Through adopting above-mentioned technical scheme, when impelling the piston and driving the dwang and remove outside the cylinder body, the dwang drives and pushes away the dish and remove, pushes away the dish and removes and cooperate lower cylinder cap and reset the piece to elasticity and extrude, when impelling the piston and driving the dwang and remove in the cylinder body, elasticity resets and kick-backs and release elastic potential energy and promote the dwang through pushing away the dish and remove to the dwang of being convenient for resets and removes.

Preferably, the lower cylinder cover is provided with a limiting groove, and the elastic reset piece is arranged in the limiting groove.

Through adopting above-mentioned technical scheme, set up the spacing groove and reset the piece to elasticity and carry on spacingly for elasticity resets and is more stable when the piece takes place deformation receiving the extrusion.

Preferably, the both ends of dwang are provided with first rotation piece and second respectively and rotate the piece, first rotation piece sets up in the lower cylinder cap, the second rotates the piece setting on the push rod.

Through adopting above-mentioned technical scheme, first rotation piece and second rotate the piece and have reduced the frictional force that the dwang received at the rotation in-process to make the dwang be convenient for more rotate, first rotation piece plays the guide effect again simultaneously, carries on spacingly to the rotation of dwang reciprocating motion.

Preferably, the push rod wears to establish and impels the piston, the one end that the dwang was kept away from to the push rod is provided with the retaining member, just the retaining member butt is on impel the lateral wall that the support ring was kept away from to the piston.

Through adopting above-mentioned technical scheme, use the retaining member to fix the propulsion piston on the push rod, be favorable to reducing the circumstances of removal in-process push rod and propulsion piston slippage to it is more stable when making the promotion subassembly use.

Preferably, all be provided with first sealing washer in advancing piston's the inside wall and the lateral wall, two first sealing washer respectively with cylinder body inside wall and push rod lateral wall looks butt, be provided with the second sealing washer in the upper cylinder cap, the second sealing washer is with cylinder body inside wall looks butt.

Through adopting above-mentioned technical scheme, first sealing washer has increased the leakproofness between propulsion piston and cylinder body and the push rod, and the second sealing washer has increased the leakproofness between upper cylinder cap and the cylinder body, is favorable to reducing the condition of gas leakage in the cylinder body to further improve the stability that promotes the subassembly.

Preferably, the guide groove and the limit pin are both provided with two, and two the guide groove and the limit pin are respectively located on two opposite sides of the rotating rod in the axial direction.

Through adopting above-mentioned technical scheme, when the dwang was along cylinder body axial direction reciprocating motion, two spacer pins butt respectively in the both sides of dwang to make the dwang more stable when rotating.

Preferably, the limit pin is detachably and fixedly arranged in the cylinder body, and a fixing piece for fixing the limit pin is arranged on the cylinder body.

Through adopting above-mentioned technical scheme, the wearing and tearing condition can appear after the spacer pin is used for a long time, takes off the mounting this moment, can follow the spacer pin and take out in the cylinder body to be convenient for overhaul the change to the spacer pin.

In summary, the present application includes at least one of the following beneficial technical effects:

by adopting the sliding fit of the spiral guide groove and the limiting pin, the compact pneumatic actuating mechanism not only can provide rotary motion like an angular stroke pneumatic actuating mechanism, but also can occupy smaller horizontal space like a straight stroke pneumatic actuating mechanism;

by adopting the elastic reset piece, when the push piston drives the rotating rod to move towards the cylinder body, the elastic reset piece rebounds and releases elastic potential energy and pushes the rotating rod to move through the push disc, so that the rotating rod can conveniently reset and move;

through adopting first sealing washer and second sealing washer, increased the gas tightness in the cylinder body to be favorable to reducing the condition of gas leakage in the cylinder body.

Drawings

FIG. 1 is a schematic view of the overall construction of the compact pneumatic actuator of the present application;

FIG. 2 is a cross-sectional view of the compact pneumatic actuator of the present application;

FIG. 3 is an enlarged schematic view of FIG. 2 of the present application at A;

FIG. 4 is an enlarged schematic view of FIG. 2 of the present application at B;

fig. 5 is an enlarged schematic view of fig. 2 of the present application at C.

Description of reference numerals: 1. a cylinder body; 2. an upper cylinder cover; 3. a lower cylinder cover; 4. rotating the rod; 5. a pushing assembly; 51. a pusher piston; 52. a push rod; 53. an air inlet; 54. an elastic reset member; 6. a guide groove; 7. a spacing pin; 8. pushing the disc; 9. a limiting groove; 10. a first rotating member; 11. a second rotating member; 12. a locking member; 13. a first seal ring; 14. a second seal ring; 15. a fixing member; 16. and (3) supporting the ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a compact pneumatic actuator.

Referring to fig. 1 and 2, a compact pneumatic actuator includes cylinder body 1, upper cylinder cover 2 and lower cylinder cover 3, and cylinder body 1 is the rectangle, and the cavity has been seted up to the inside of cylinder body 1, and the both ends opening setting of cylinder body 1 cavity, and upper cylinder cover 2 and lower cylinder cover 3 pass through bolt fixed mounting respectively at the both ends of cylinder body 1.

Referring to fig. 2, the middle part of the lower cylinder cover 3 is rotatably provided with a rotating rod 4 along the axis direction of the cylinder body 1, one end of the rotating rod 4 is positioned outside the cylinder body 1, the other end of the rotating rod 4 is positioned in the cylinder body 1, a pushing assembly 5 is arranged in the cavity of the cylinder body 1, and the pushing assembly 5 is fixedly connected with the rotating rod 4 in a rotating manner. Two limiting pins 7 are fixedly mounted on two opposite side walls in the middle of the cavity of the cylinder body 1 along the axis direction of the vertical cylinder body 1, guide grooves 6 are formed in the rotating rod 4 along two opposite sides of the axis direction of the rotating rod 4, and the guide grooves 6 are spirally formed in the axis direction of the rotating rod 4. The end part of the limiting pin 7 close to the rotating rod 4 is hemispherical, the section of the guide groove 6 is hemispherical, and the limiting groove 9 is slidably arranged in the guide groove 6. The pushing assembly 5 drives the rotating rod 4 to slide in a reciprocating mode along the axis direction of the pushing assembly, and the rotating rod 4 rotates in the sliding process through the matching of the guide groove 6 and the limiting pin 7, so that the compact pneumatic actuating mechanism can provide rotary motion like an angular stroke pneumatic actuating mechanism and can occupy a small horizontal space like a straight stroke pneumatic actuating mechanism.

Referring to fig. 4, the two limit pins 7 are detachably and fixedly installed in the cylinder body 1, the two opposite side walls of the cylinder body 1 are provided with installation holes, the limit pins 7 are slidably installed in the installation holes, the cylinder body 1 is provided with fixing pieces 15 at the installation holes, and the fixing pieces 15 abut against and fix the end portions of the limit pins 7. In the present application, the fixing member 15 may be selected from a bolt and a washer. The rotating bolt fixes the gasket, the gasket abuts against the end part of the limiting pin 7 to fix the limiting pin 7, and the fixing part 15 is disassembled to slide and take out the limiting pin 7, so that the limiting pin 7 is convenient to overhaul and replace.

Referring to fig. 2, the pushing assembly 5 includes a pushing piston 51, a push rod 52, an air inlet 53 and an elastic restoring member 54, the pushing piston 51 is slidably mounted in the cylinder body 1 along the axial direction of the cylinder body 1, the outer side wall of the pushing piston 51 abuts against the inner side wall of the cylinder body 1, the push rod 52 is inserted into and fixedly mounted in the pushing piston 51, one end of the push rod 52 close to the rotating rod 4 is rotatably mounted in the rotating rod 4, and the air inlet 53 is opened in the upper cylinder cover 2. The external air supply device inflates air into the cylinder body 1 through the air inlet hole 53, the air pushes the push piston 51 to move, and the push piston 51 drives the rotating rod 4 to move towards the outside of the cylinder body 1 through the push rod 52.

Referring to fig. 2 and 5, a second sealing ring 14 is mounted on the outer side wall of the upper cylinder cover 2 abutting against the cylinder body 1, and the second sealing ring 14 abuts against the inner side wall of the cylinder body 1. The outer side wall and the inner side wall of the propelling piston 51 are both provided with a first sealing ring 13, the first sealing ring 13 on the outer side wall of the propelling piston 51 is abutted against the inner side wall of the cylinder body 1, and the first sealing ring 13 on the inner side wall of the propelling piston 51 is abutted against the outer side wall of the push rod 52. In this application, first sealing washer 13 and second sealing washer 14 all can be selected for use to be the rubber circle, and the cross-section of rubber circle is circular for the sealed effect of making is better. The first sealing ring 13 and the second sealing ring 14 are used, so that the sealing performance in the cavity of the cylinder body 1 is improved, the gas filled in the cylinder body 1 is not easy to leak, and the stability of the pushing assembly 5 is improved.

Referring to fig. 2 and 3, two second rotating parts 11 are installed in the end portion of the rotating rod 4 close to the push rod 52, the second rotating parts 11 are sleeved on the push rod 52, the support ring 16 is sleeved on the push rod 52, one end of the support ring 16 abuts against the second rotating part 11, the other end abuts against the pushing piston 51, a locking part 12 is installed on one end of the push rod 52 far away from the support ring 16 in a threaded manner, and the locking part 12 abuts against the side wall of the pushing piston 51 far away from the support ring 16. In this application, the second rotating member 11 may be selected as a bearing, and the locking member 12 may be selected as a nut. By rotating the lock piece 12 and engaging the support ring 16, the push rod 52 is fixed to the push piston 51, and the second rotating piece 11 reduces the rotational friction between the push rod 52 and the rotating lever 4, thereby further facilitating the rotation of the rotating lever 4.

Referring to fig. 2, a push plate 8 is sleeved on the rotating rod 4 between the limit pin 7 and the lower cylinder cover 3, one end of the rotating rod 4 close to the lower cylinder cover 3 has a smaller diameter than the other end, the push plate 8 and the elastic reset piece 54 are sleeved on one end of the rotating rod 4 having a smaller diameter, and two ends of the elastic reset piece 54 are respectively abutted to the lower cylinder cover 3 and the push plate 8. In the present application, the elastic restoring member 54 may be selected as a spring. Dwang 4 removes the in-process and drives the pushing tray 8 and removes, and pushing tray 8 removes and extrudes elasticity piece 54 that resets and makes it take place deformation, and when air supply equipment stopped the air feed, elasticity piece 54 that resets kick-backs and drives dwang 4 through pushing tray 8 and resets.

Referring to fig. 2, a limiting groove 9 is formed in a side wall, close to the elastic reset piece 54, of the lower cylinder cover 3, the elastic reset piece 54 is located in the limiting groove 9, the limiting groove 9 limits the elastic reset piece 54, and the elastic reset piece 54 is more stable when being deformed by extrusion. The lower cylinder cover 3 is internally provided with a first rotating piece 10, and the first rotating piece 10 is sleeved on the rotating rod 4. In the present application, the first rotating member 10 may be selected as a shaft sleeve. The first rotating member 10 reduces the rotating friction force between the push rod 52 and the lower cylinder head 3, so that the rotating lever 4 is more convenient to rotate, and the first rotating member 10 guides the movement of the rotating lever 4.

The implementation principle of the embodiment of the application is as follows: outside air feeder aerifys towards cylinder body 1 in through inlet port 53, gaseous promotion impels piston 51 to move towards lower cylinder cap 3 department, impel piston 51 to drive push rod 52 and move, push rod 52 drives dwang 4 and moves, dwang 4 rotates through spiral guide way 6 and spacer pin 7's cooperation at the in-process that moves, and dwang 4 drives push away the dish 8 and moves when moving, push away dish 8 and move extrusion elasticity reset piece 54 and make it take place deformation, air feeder stops the air feed when dwang 4 removes the back, elasticity reset piece 54 kick-backs and drives dwang 4 through push away dish 8 and reset this moment, and dwang 4 resets and moves the in-process and also rotates through spiral guide way 6 and spacer pin 7's cooperation. By adopting the sliding fit of the spiral guide groove 6 and the limiting pin 7, the compact pneumatic actuator can provide rotary motion like an angular stroke pneumatic actuator and occupy smaller horizontal space like a straight stroke pneumatic actuator.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a compact pneumatic actuator, includes cylinder body (1) and sets up upper cylinder cap (2) and lower cylinder cap (3) at cylinder body (1) both ends, its characterized in that: the utility model discloses a cylinder body, including lower cylinder cap (3) internal rotation, be provided with in cylinder body (1) and be used for driving dwang (4) along reciprocal promotion subassembly (5) that slide of cylinder body (1) axis direction, guide way (6) have been seted up to the spiral on dwang (4), cylinder body (1) internal fixation is provided with spacer pin (7), just one end setting that cylinder body (1) inside wall was kept away from in spacer pin (7) in guide way (6) and with guide way (6) sliding fit.

2. A compact pneumatic actuator according to claim 1, wherein: promote subassembly (5) including propelling piston (51), push rod (52), inlet port (53) and elasticity piece (54) that resets, propelling piston (51) slide along cylinder body (1) axial direction and set up in cylinder body (1), inlet port (53) are seted up in last cylinder cap (2) and are used for being connected in order to promote propelling piston (51) to move with outside air supply equipment, push rod (52) set up the one end of keeping away from inlet port (53) in propelling piston (51), just dwang (4) rotate and set up on push rod (52), elasticity piece (54) that resets sets up on cylinder cap (3) down and is used for driving dwang (4) to reset.

3. A compact pneumatic actuator according to claim 2, wherein: the rotating rod (4) is provided with a push disc (8), one end of the elastic reset piece (54) is abutted against the lower cylinder cover (3), and the other end of the elastic reset piece is abutted against the push disc (8).

4. A compact pneumatic actuator according to claim 3, wherein: the lower cylinder cover (3) is provided with a limiting groove (9), and the elastic reset piece (54) is arranged in the limiting groove (9).

5. A compact pneumatic actuator according to claim 2, wherein: the two ends of the rotating rod (4) are respectively provided with a first rotating piece (10) and a second rotating piece (11), the first rotating piece (10) is arranged in the lower cylinder cover (3), and the second rotating piece (11) is arranged on the push rod (52).

6. A compact pneumatic actuator according to claim 5, wherein: the push rod (52) penetrates through the push piston (51), one end, far away from the rotating rod (4), of the push rod (52) is provided with a locking piece (12), and the locking piece (12) abuts against the side wall, far away from the support ring, of the push piston (51).

7. A compact pneumatic actuator according to claim 6, wherein: all be provided with first sealing washer (13), two in the inside wall and the lateral wall of propulsion piston (51) first sealing washer (13) respectively with cylinder body (1) inside wall and push rod (52) lateral wall looks butt, be provided with second sealing washer (14) in going up cylinder cap (2), second sealing washer (14) and cylinder body (1) inside wall looks butt.

8. A compact pneumatic actuator according to claim 1, wherein: guide way (6) all are provided with two, just two with spacer pin (7) guide way (6) and spacer pin (7) are located the relative both sides of dwang (4) axis direction respectively.

9. A compact pneumatic actuator according to claim 8, wherein: the limiting pin (7) is detachably and fixedly arranged in the cylinder body (1), and a fixing piece (15) used for fixing the limiting pin (7) is arranged on the cylinder body (1).

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