Pneumatic actuator with 180-degree rotating angle and double-piston structure

Abstract

The utility model discloses a pneumatic actuator of a double-piston structure with a 180-degree rotating angle, which belongs to the technical field of pneumatic actuators and comprises a cylinder body, a valve body, a protection component, an adjusting component and a rotating component, the valve body is connected onto the cylinder body, a sliding block is arranged on the cylinder body, the protection component comprises a protection box, a first bolt, a sliding rail and a protection box cover, and the adjusting component is arranged on the protection box cover. A sliding rail is arranged on the protection box, the protection box is in sliding connection with the cylinder body through the sliding rail and the sliding block, the protection box cover is arranged at the top end of the protection box, the first bolt penetrates through the protection box cover to be connected with the cylinder body, and the adjusting assembly is used for adjusting the rotating angle of the valve body. The rotating assembly is used for rotating the valve body, the connecting structure of the protection box and the cylinder body is stable, the pneumatic actuator can be isolated and protected, internal mechanisms are prevented from being exposed, and the probability that the pneumatic actuator is polluted in a complex environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic actuators, and more specifically to a pneumatic actuator with a double-piston structure and a 180-degree rotation angle. Background Art

[0002] A pneumatic actuator is a device that uses compressed air as a power source to drive the movement of mechanical parts. It is usually composed of components such as a cylinder, a piston, a piston rod, and a valve. The working principle of a pneumatic actuator is to control the entry and exit of compressed air to make the piston in the cylinder produce reciprocating motion, thereby driving the movement of components such as the piston rod and valve. Pneumatic actuators have the advantages of simple structure, fast action, high reliability, and easy maintenance. They are widely used in automated production lines, robots, machine tools, printing machinery, packaging machinery and other fields.

[0003] Chinese patent announcement number CN219827903U discloses a pneumatic actuator with a limited valve, including a valve cover, one end of a gas rod inserted into the interior of a gas cylinder, and a second spring fixed to the other end of the gas rod, a second pressure sensor installed on the inner wall of the valve cover at a position corresponding to the second spring, a first spring sleeved on the outer periphery of the middle part of the gas rod, a first pressure sensor installed at the end of the cylinder close to the gas rod, and an air inlet and outlet assembly installed at a position corresponding to the end of the cylinder away from the second pressure sensor. When the cylinder is inhaled, the utility model has a second spring installed at the end of the gas rod away from the gas, and a second pressure sensor that withstands the pressure of the second spring, a first spring installed at the position of the gas rod close to the end of the cylinder, and a first pressure sensor that withstands the pressure of the first spring installed at the end of the cylinder. When the air intake and exhaust volume reaches 90 degrees when the sphere rotates in the opposite direction, the pressure sensor can control the air inlet and outlet assembly to stop exhausting through a controller, without using rigid resistance, to avoid damage to parts.

[0004] However, the above-mentioned existing technical solutions have the following defects: the cylinder of the pneumatic actuator has no protective structure, which may cause damage to the materials and components of the pneumatic actuator in extreme temperature, humidity, corrosive environment, etc., causing aging of the mechanical mechanism in the pneumatic actuator and affecting work efficiency.

[0005] Therefore, it is necessary to provide a pneumatic actuator with a double-piston structure with a 180° rotation angle to solve the above problems. Utility Model Content

[0006] The utility model provides a pneumatic actuator with a double-piston structure with a 180° rotation angle, which can improve the problem in the related art that the pneumatic actuator is easily contaminated by the external environment.

[0007] An embodiment of the present application provides a pneumatic actuator with a double-piston structure with a 180° rotation angle, including a cylinder body, a valve body, a protective assembly, an adjustment assembly and a rotation assembly. The valve body is connected to the cylinder body, and a slider is provided on the cylinder body. The protective assembly includes a protective box, a first bolt, a slide rail and a protective box cover. The protective box is provided with a slide rail, and the protective box is slidably connected to the cylinder body through the slide rail and the slider. The protective box cover is provided on the top of the protective box, and the first bolt passes through the protective box cover and is connected to the cylinder body. The adjusting assembly is used to adjust the rotation angle of the valve body, and the rotation assembly is used to rotate the valve body.

[0008] The above-mentioned technical solution in the embodiment of the present application has at least the following technical effects: when using the pneumatic actuator, the staff uses the slider provided on the pneumatic actuator to slide the pneumatic actuator into the protective box through the slide rail on the protective box, and the valve body is connected to the pneumatic actuator through the bottom of the protective box, and then the protective box cover is covered on the pneumatic actuator. The staff uses the first bolt to thread the pneumatic actuator to fix the protective box cover to the protective box and the pneumatic actuator. Then the staff can adjust the opening angle of the valve body by adjusting the assembly.

[0009] The embodiment of the present application provides a pneumatic actuator with a dual-piston structure with a 180° rotation angle. The protective box, the slide rail, the slider, the protective box cover and the first bolt are arranged. With this arrangement, the connection structure between the protective box and the cylinder body is stable, the pneumatic actuator can be isolated and protected, the internal mechanism is prevented from being exposed, the probability of the pneumatic actuator being contaminated in a complex environment is reduced, and the service life of the pneumatic actuator is increased.

[0010] In some embodiments, a first through hole and a second through hole are formed on the protective box, an air inlet and an air outlet are formed on the cylinder body, and the first through hole is connected to the air inlet and the air outlet.

[0011] In some embodiments, side shells are provided on both ends of the cylinder body, and the side shells are threadedly connected to the cylinder body through a second bolt. A return spring is provided on the side shell, one end of the return spring abuts against the side shell, and the other end of the return spring is connected to a piston and abuts against the piston. A first sealing ring and a piston bearing are provided on the piston, and a piston tooth is provided on the side of the piston away from the return spring.

[0012] In some embodiments, an output shaft is rotatably connected to the cylinder body, a convex tooth is provided on the output shaft, the convex tooth is engaged with the piston teeth, and a second sealing ring is provided on the output shaft.

[0013] In some embodiments, an adjusting screw hole is further provided on the cylinder body, and the adjusting screw hole is connected to the second through hole. The adjusting assembly includes an adjusting screw, a nut and an adjusting block. The adjusting block is fixedly connected to the output shaft, and one end of the adjusting screw passes through the adjusting screw hole and abuts against the adjusting block, and the nut is threadedly connected to the adjusting screw.

[0014] In some embodiments, a protective shell is provided on the cylinder body, and the rotating assembly includes a driven turbine, a driving worm, a rotating wheel and a handle. The driven turbine is provided on the output shaft, one end of the driving worm is rotatably connected to the protective shell, the other end of the driving worm is connected to the rotating wheel, and the driving worm is transmission-connected to the driven turbine, and a handle is provided on the rotating wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the pneumatic actuator with a double-piston structure with a 180° rotation angle of the present invention;

[0017] Figure 2 This is a longitudinal sectional view of the protective housing of the pneumatic actuator with a double-piston structure having a 180° rotation angle according to the present invention;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a transverse cross-sectional view of the protective housing of the pneumatic actuator with a double-piston structure having a 180° rotation angle according to the present invention;

[0020] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0021] Figure 6 This is a schematic diagram of the cylinder structure of a pneumatic actuator with a double-piston structure with a 180° rotation angle of the present invention.

[0022] Description of the numbers in the figure:

[0023] 1. Cylinder body; 2. Valve body; 3. Protection assembly; 31. Protection box; 32. First bolt; 33. Slide rail; 34. Protection box cover; 4. Side shell; 5. Second bolt; 6. Slider; 7. Return spring; 8. Piston; 9. Piston latch; 10. First sealing ring; 11. Piston bearing; 12. Output shaft; 13. Protruding tooth; 14. Second sealing ring; 15. Adjustment assembly; 151. Adjustment screw; 152. Nut; 153. Adjustment block; 16. Adjustment screw hole; 17. Air inlet; 18. Air outlet; 19. Rotation assembly; 191. Driven turbine; 192. Drive worm; 193. Rotor; 194. Handle; 20. Protection shell; 21. First through hole; 22. Second through hole. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.

[0026] The cylinder of the pneumatic actuator has no protective structure, which may damage the materials and components of the pneumatic actuator in extreme temperature, humidity, corrosive environment, etc., causing aging of the mechanical structure in the pneumatic actuator and affecting work efficiency.

[0027] Based on this, in order to improve the problem that pneumatic actuators in related technologies are easily contaminated by the external environment.

[0028] See also Figure 1 and Figure 6 A pneumatic actuator with a double-piston structure and a 180° rotation angle includes a cylinder body 1, a valve body 2, a protective component 3, an adjustment component 15 and a rotating component 19. The valve body 2 is connected to the cylinder body 1, and a slider 6 is provided on the cylinder body 1.

[0029] Optionally, in some embodiments, see Figure 1-Figure 4The protection component 3 includes a protection box 31, a first bolt 32, a slide rail 33 and a protection box cover 34. The protection box 31 is provided with a slide rail 33, and the protection box 31 is slidably connected to the cylinder body 1 through the slide rail 33 and the slider 6. The protection box cover 34 is provided on the top of the protection box 31. The first bolt 32 passes through the protection box cover 34 and is connected to the cylinder body 1. The adjustment component 15 is used to adjust the rotation angle of the valve body 2. The rotation component 19 is used to rotate the valve body 2. A first through hole 21 and a second through hole 22 are provided on the protection box 31. An air inlet 17 and an air outlet 18 are provided on the cylinder body 1. The first through hole 21 is connected to the air inlet 17 and the air outlet 18.

[0030] With such an arrangement, when the staff uses the pneumatic actuator, they align the slider 6 on the pneumatic actuator with the slide rail 33 on the protective box 31, and the pneumatic actuator is fixed in the protective box 31 along the slide rail 33. After the pneumatic actuator is completely fixed in the protective box 31, the staff covers the protective box cover 34 on the protective box 31 to seal the pneumatic actuator in the protective box 31. The staff then threadably connects the first bolt 32 to the cylinder body 1 through the reserved through hole on the protective box cover 34, so that the protective box cover 34 is fixed to the protective box 31, thereby improving the sealing of the protective box 31. With such an arrangement, the connection structure between the protective box 31 and the cylinder body 1 is stable, and the pneumatic actuator can be isolated and protected to avoid exposure of the internal mechanism, reduce the probability of the pneumatic actuator being contaminated in a complex environment, and increase the service life of the pneumatic actuator.

[0031] Optionally, in some embodiments, see Figure 2 and Figure 5 , side shells 4 are provided on both ends of the cylinder body 1, and the side shells 4 are threadedly connected to the cylinder body 1 through second bolts 5. A return spring 7 is provided on the side shell 4, and one end of the return spring 7 abuts against the side shell 4. The other end of the return spring 7 is connected to a piston 8 and abuts against the piston 8. A first sealing ring 10 and a piston bearing 11 are provided on the piston 8. A piston tooth 9 is provided on the side of the piston 8 away from the return spring 7. An output shaft 12 is rotatably connected to the cylinder body 1, and a convex tooth 13 is provided on the output shaft 12. The convex teeth 13 are engaged with the piston teeth 9, a second sealing ring 14 is provided on the output shaft 12, and an adjusting screw thread hole 16 is also provided on the cylinder body 1, and the adjusting screw thread hole 16 is communicated with the second through hole 22. The adjusting assembly 15 includes an adjusting screw 151, a nut 152 and an adjusting block 153, and the adjusting block 153 is fixedly connected to the output shaft 12, and one end of the adjusting screw 151 passes through the adjusting screw thread hole 16 and abuts against the adjusting block 153, and the nut 152 is threadedly connected to the adjusting screw 151.

[0032] With such a configuration, when the staff needs to use the pneumatic actuator with a double-piston 8 structure with a 180° rotation angle, the staff can inject gas into the cylinder 1 through the external air supply equipment and then through the first through hole 21 opened on the protective box 31 to connect with the air inlet 17. The gas pushes the piston 8 to move slowly to both sides of the cylinder 1, and the piston 8 compresses the return spring 7. The movement of the piston 8 drives the piston tooth 9 to move with the piston 8. Because the piston tooth 9 is engaged with the convex tooth 13 provided on the output shaft 12, the movement of the piston tooth 9 drives the output shaft 12 to rotate, and the valve body 2 connected to the output shaft 12 rotates with the rotation of the output shaft 12. In this way, the valve body 2 can be rotated. When the staff needs to adjust the rotation angle of the valve body 2 When the valve body 2 rotates 180 degrees, for example, the valve body 2 needs to be rotated 180 degrees, the nut 152 on the left adjusting screw 151 can be rotated to push the adjusting screw 151 deeper into the cylinder body 1 from the adjusting screw screw hole 16. When the output shaft 12 rotates, the adjusting block 153 rotates accordingly. When the valve body 2 rotates 180 degrees, the adjusting block 153 abuts against the adjusting screw 151 on the left, limiting the rotation of the output shaft 12 and completing the set rotation of the valve body 2. When the valve body 2 needs to be reset, the gas inside the cylinder body 1 is discharged through the air outlet 18 provided on the cylinder body 1. In this way, the piston 8 is pushed to move by the return spring 7 without the force of the gas, driving the piston tooth 9 to move, rotating the output shaft 12, and also driving the valve body 2 to return to its initial position.

[0033] Optionally, in some embodiments, see Figure 1 and Figure 3 A protective shell 20 is provided on the cylinder body 1, and the rotating assembly 19 includes a driven turbine 191, a driving worm 192, a wheel 193 and a handle 194. The driven turbine 191 is provided on the output shaft 12, one end of the driving worm 192 is rotatably connected to the protective shell 20, the other end of the driving worm 192 is connected to the wheel 193, and the driving worm 192 is transmission-connected to the driven turbine 191, and a handle 194 is provided on the wheel 193.

[0034] With such arrangement, when the staff uses the pneumatic actuator, in the event of a fault or power outage, the external air supply equipment cannot inject air into the cylinder 1, resulting in the output shaft 12 being unable to rotate. At this time, the staff needs to rotate it manually. There are small arc-shaped notches on the protective box 31 and the protective box cover 34, which allow the driving worm 192 to pass through the small arc-shaped notch. The staff can drive the wheel 193 connected to the worm 192 by means of the handle 194. The wheel 193 drives the driving worm 192 to rotate, and the driving worm 192 drives the driven turbine 191 to rotate, and the driven turbine 191 drives the output shaft 12 to rotate, thereby driving the valve body 2 to rotate, achieving the effect of manually controlling the rotation of the valve body 2. It can be used for emergency operation without relying on the air source. When the air source fails, the actuator can be manually operated for emergency stop or start, thereby ensuring the safety of production and operation.

[0035] Working principle: When using the pneumatic actuator, the staff aligns the slider 6 on the pneumatic actuator with the slide rail 33 on the protective box 31, and the pneumatic actuator is fixed in the protective box 31 along the slide rail 33. After the pneumatic actuator is completely fixed in the protective box 31, the staff covers the protective box cover 34 on the protective box 31 to seal the pneumatic actuator in the protective box 31. The staff then threads the first bolt 32 through the reserved through-hole on the protective box cover 34 and connects it to the cylinder body 1. The first through-hole 21 opened on the protective box 31 is connected to the air inlet 17 through the external air supply equipment, and the gas can be injected into the cylinder body 1. The valve body pushes the piston 8 to move slowly to both sides of the cylinder body 1, and the piston 8 compresses the return spring 7. The movement of the piston 8 drives the piston tooth 9 to move with the piston 8. Because the piston tooth 9 is engaged with the convex tooth 13 provided on the output shaft 12, the movement of the piston tooth 9 drives the output shaft 12 to rotate, and the valve body 2 connected to the output shaft 12 rotates with the rotation of the output shaft 12, so that the valve body 2 can be rotated. When the staff needs to adjust the rotation angle of the valve body 2, for example, if the valve body 2 needs to be rotated 180 degrees, the nut 152 on the left side adjusting screw 151 can be rotated to remove the adjusting screw 151 from the adjusting screw screw hole 1 6 goes deeper into the cylinder body 1. When the output shaft 12 rotates, the adjusting block 153 rotates with it. When the valve body 2 rotates 180 degrees, the adjusting block 153 abuts against the adjusting screw 151 on the left, limiting the rotation of the output shaft 12 and completing the set rotation of the valve body 2. When the valve body 2 needs to be reset, the gas inside the cylinder body 1 is discharged through the gas outlet 18 provided on the cylinder body 1. In this way, the piston 8 is pushed to move by the reset spring 7 without the force of the gas, driving the piston tooth 9 to move, rotating the output shaft 12, and also driving the valve body 2 to return to its initial position. In the event of a fault or power outage, the external gas supply equipment cannot be used. Injecting air into the cylinder 1 causes the output shaft 12 to be unable to rotate. At this time, the staff needs to rotate it manually. There are small arc-shaped notches on the protective box 31 and the protective box cover 34, which allow the driving worm 192 to pass through the small arc-shaped notch. The staff can drive the handle 194 on the wheel 193 connected to the worm 192 to rotate the wheel 193. The wheel 193 drives the driving worm 192 to rotate, and the driving worm 192 drives the driven turbine 191 to rotate. The driven turbine 191 drives the output shaft 12 to rotate, thereby driving the valve body 2 to rotate, achieving the effect of manually controlling the rotation of the valve body 2, which can be used for emergency operations.

[0036] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. 180° dual-piston pneumatic actuator, characterized by: The invention comprises a cylinder body (1), a valve body (2), a protection assembly (3), an adjustment assembly (15) and a rotation assembly (19), wherein the valve body (2) is connected to the cylinder body (1), a slider (6) is provided on the cylinder body (1), the protection assembly (3) comprises a protection box (31), a first bolt (32), a slide rail (33) and a protection box cover (34), the protection box (31) is provided with a slide rail (33), and the cylinder body (1) is slidably connected to the protection box (31) through the slide rail (33) and the slider (6), the protection box cover (34) is provided on the top end of the protection box (31), the first bolt (32) passes through the protection box cover (34) and is connected to the cylinder body (1), the adjustment assembly (15) is used to adjust the rotation angle of the valve body (2), and the rotation assembly (19) is used to rotate the valve body (2).

2. The pneumatic actuator with a 180° rotation angle and a dual-piston structure according to claim 1, characterized in that: The protective box (31) is provided with a first through hole (21) and a second through hole (22), the cylinder body (1) is provided with an air inlet (17) and an air outlet (18), and the first through hole (21) is in communication with the air inlet (17) and the air outlet (18).

3. The pneumatic actuator with a 180° rotation angle and a dual-piston structure according to claim 2, characterized in that: Side shells (4) are provided at both ends of the cylinder body (1), and the side shells (4) are threadedly connected to the cylinder body (1) through second bolts (5). A return spring (7) is provided on the side shell (4), and one end of the return spring (7) abuts against the side shell (4). The other end of the return spring (7) is connected to a piston (8) and abuts against the piston (8). A first sealing ring (10) and a piston bearing (11) are provided on the piston (8), and a piston tooth (9) is provided on the side of the piston (8) away from the return spring (7).

4. The pneumatic actuator with a 180° rotation angle and a dual-piston structure according to claim 3, characterized in that: An output shaft (12) is rotatably connected to the cylinder body (1), and a convex tooth (13) is provided on the output shaft (12). The convex tooth (13) is meshed and connected with the piston tooth (9), and a second sealing ring (14) is provided on the output shaft (12).

5. The pneumatic actuator with a 180° rotation angle and a dual-piston structure according to claim 4, characterized in that: The cylinder body (1) is further provided with an adjusting screw thread hole (16), the adjusting screw thread hole (16) being in communication with the second through hole (22), the adjusting assembly (15) comprising an adjusting screw (151), a nut (152) and an adjusting block (153), the adjusting block (153) being fixedly connected to the output shaft (12), one end of the adjusting screw (151) passing through the adjusting screw thread hole (16) and abutting against the adjusting block (153), and the nut (152) being threadedly connected to the adjusting screw (151).

6. The pneumatic actuator with a 180° rotation angle and a dual-piston structure according to claim 5, characterized in that: The cylinder body (1) is provided with a protective housing (20), and the rotating assembly (19) comprises a driven turbine (191), a driving worm (192), a rotating wheel (193) and a handle (194). The driven turbine (191) is provided on the output shaft (12), one end of the driving worm (192) is rotationally connected to the protective housing (20), the other end of the driving worm (192) is connected to the rotating wheel (193), and the driving worm (192) is transmission-connected to the driven turbine (191). The rotating wheel (193) is provided with a handle (194).

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