Pneumatic control device using combined control valve to realize the action of multiple actuators

Abstract

The present invention discloses a pneumatic control device for realizing the action of multiple actuators by using a combination control valve, comprising: a mounting plate, M first control valves arranged on a first side surface of the mounting plate, and N second control valves arranged on a second side surface of the mounting plate, wherein the mounting plate is provided with M·N mounting holes in an array, and an actuator is movably mounted in each mounting hole, and the first control valve is used to control the actuator in the corresponding M mounting holes. i One end of each of the N mounting holes in the row is connected to the compressed gas or the outside atmosphere, and the second control valve is used to control the corresponding N j The other end of each of the M mounting holes on the row is connected to the compressed gas or the outside atmosphere to control the M i Column and N j The present invention realizes the independent control of M·N number of actuators by combining M+N number of control valves, thereby saving costs and reducing volume.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic control, and in particular to a pneumatic control device which utilizes a combined control valve to realize the actions of multiple actuators. Background Art

[0002] Currently, independent control of pneumatic components in the market typically involves one pneumatic control valve controlling one pneumatic actuator. This approach is suitable for applications with a small number of pneumatic actuators. However, as the number of actuators increases, the number of corresponding pneumatic control valves will need to increase, significantly increasing operating costs. It also increases the size of the pneumatic control device, making it unsuitable for applications with a large number of pneumatic actuators and tight space requirements. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a pneumatic control device that uses a combination control valve to realize the operation of multiple actuators. By combining M+N control valves, M·N actuators can be independently controlled, which greatly saves costs and reduces volume.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a pneumatic control device that uses a combination control valve to realize the action of multiple actuators, comprising: a mounting plate, M first control valves arranged along the X-axis on the first side of the mounting plate, and N second control valves arranged along the Y-axis on the second side of the mounting plate, wherein the mounting plate is provided with M·N mounting holes arranged in an array along the Z-axis, and an actuator is movably mounted in each mounting hole, and the first control valve is used to control the actuator in the corresponding M i One end of each of the N mounting holes in the row is connected to the compressed gas or the outside atmosphere, and the second control valve is used to control the corresponding N j The other end of each of the M mounting holes in the row is connected to the compressed gas or the outside atmosphere, so as to control the M i Column and N j One of the execution elements on the row node acts; wherein M and N are both natural numbers greater than or equal to 2.

[0005] As a further improvement of the present invention, a lower cover is installed at the bottom of the mounting plate, and M first grooves are arranged along the X-axis on the lower cover. The first grooves extend along the Y-axis and the corresponding M grooves are arranged along the X-axis. i The lower ends of the N mounting holes in the row are connected; the top of the mounting plate is installed with an upper cover plate, and the upper cover plate is provided with N second grooves arranged along the Y axis, and the second grooves are extended along the X axis, and the corresponding N j The upper ends of the M mounting holes in a row are connected.

[0006] As a further improvement of the present invention, a first valve plate is mounted on the first side surface, the first valve plate being provided with M first air holes, second air holes, and third air holes, the M second air holes being connected to the M first grooves in a one-to-one correspondence; a first exhaust joint and a first vent joint are mounted on the first valve plate, the M first air holes being connected to the first exhaust joint, and the M third air holes being connected to the first vent joint;

[0007] M first control valves are mounted on the first valve plate, each of the first control valves having a first port A, a first port P, and a first port B, the first port A being connected to the first air holes in a one-to-one correspondence, the first port P being connected to the second air holes in a one-to-one correspondence, and the first port B being connected to the third air holes in a one-to-one correspondence;

[0008] When the first control valve is in operation, the first P port thereon is communicated with the first B port; when the first control valve is not in operation, the first P port thereon is communicated with the first A port.

[0009] As a further improvement of the present invention, M first gas channels are provided on the mounting plate, and one end of each of the M first gas channels is located on the first side surface and is connected to the M second air holes in a one-to-one correspondence; the other end of each of the M first gas channels is located at the bottom of the mounting plate and is connected to the M first grooves in a one-to-one correspondence.

[0010] As a further improvement of the present invention, a second valve plate is mounted on the second side surface, and the second valve plate is provided with N fourth air holes, N fifth air holes, and N sixth air holes, each of which is connected to the N second grooves in a one-to-one correspondence; a second exhaust joint and a second vent joint are mounted on the second valve plate, and the N fourth air holes are all connected to the second exhaust joint, and the N sixth air holes are all connected to the second vent joint;

[0011] N second control valves are mounted on the second valve plate, each second control valve having a second A port, a second P port, and a second B port, the second A port being connected to the fourth air hole in a one-to-one correspondence, the second P port being connected to the fifth air hole in a one-to-one correspondence, and the second B port being connected to the sixth air hole in a one-to-one correspondence;

[0012] When the second control valve is in operation, the second P port thereon is communicated with the second B port; when the second control valve is not in operation, the second P port thereon is communicated with the second A port.

[0013] As a further improvement of the present invention, N second gas channels are provided on the mounting plate, and one end of each of the N second gas channels is located on the second side surface, and is respectively connected to the N fifth air holes in a one-to-one correspondence; the other end of each of the N second gas channels is located at the top of the mounting plate, and is respectively connected to the N second grooves in a one-to-one correspondence.

[0014] As a further improvement of the present invention, it also includes a base plate installed at the bottom of the lower cover plate, the lower end of the actuator is inserted into the base plate, and the actuator is equipped with a sealing ring, which is limited between the lower cover plate and the base plate.

[0015] As a further improvement of the present invention, the actuator is provided with a piston portion, and the upper end surface and the lower end surface of the piston portion have the same area.

[0016] The beneficial effects of the present invention are as follows: 1) The present invention provides a pneumatic control device that utilizes a combination control valve to realize the action of multiple actuators, and independently controls M·N actuators by combining M+N control valves, which greatly reduces the number of control valves used, thereby significantly reducing the cost of use; 2) The overall structure adopts a modular design, which saves a lot of space and reduces the volume, and can achieve a smaller spatial layout while meeting the control conditions, which is beneficial for use in some occasions where there are many pneumatic actuators and high space requirements; 3) Each actuator of the pneumatic control device is distributed at the intersection nodes of rows and columns in an array manner, which can realize a layout of any number M·N and can be independently controlled by combined signals, with strong scalability and the ability to meet different usage requirements; 4) The control is simple and reliable, and the control of the actuator at a specified position can be completed by sending different combined instructions to the standard pneumatic control valve; 5) It has the characteristics of fast response, high speed, and stable and reliable, and is particularly suitable for replacing a small standard three-axis mechanism to realize fixed-position grabbing and lifting actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 An exploded view of the present invention;

[0019] Figure 3 A half-section view of the present invention;

[0020] Figure 4 A perspective view of the mounting plate of the present invention;

[0021] Figure 5 A half-section view of the mounting plate of the present invention;

[0022] Figure 6A perspective view of the first control valve installed on the first valve plate in the present invention;

[0023] Figure 7 A perspective view of the second control valve installed on the second valve plate in the present invention;

[0024] Figure 8 is a three-dimensional diagram of the lower cover plate of the present invention;

[0025] Figure 9 It is a three-dimensional diagram of the upper cover plate in the present invention.

[0026] The following description is made with reference to the accompanying drawings:

[0027] 1. Mounting plate; 101. Mounting hole; 102. First gas channel; 103. Second gas channel; 2. First control valve; 3. Second control valve; 4. Actuator; 401. Piston; 5. Lower cover plate; 501. First groove; 6. Upper cover plate; 601. Second groove; 7. First valve plate; 701. First air hole; 702. Second air hole; 703. Third air hole; 8. First exhaust connector; 9. First ventilation connector; 10. Second valve plate; 1001. Fourth air hole; 1002. Fifth air hole; 1003. Sixth air hole; 11. Second exhaust connector; 12. Second ventilation connector; 13. Bottom plate; 14. Sealing ring. DETAILED DESCRIPTION

[0028] A preferred embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0029] See Figures 1 to 9 The present invention provides a pneumatic control device for realizing the operation of multiple actuators using a combination control valve, comprising: a mounting plate 1, M first control valves 2, N second control valves 3, M·N actuators 4, a lower cover plate 5, an upper cover plate 6, a first valve plate 7, a second valve plate 10, and a base plate 13. M and N are both natural numbers greater than or equal to 2, and the specific number of M first control valves 2 and N second control valves 3 can be configured according to actual usage requirements.

[0030] For ease of understanding, the direction of the long side of the mounting plate 1 is defined as the X-axis direction, the direction of the wide side is defined as the Y-axis direction, and the direction of the high side is defined as the Z-axis direction. Figure 1 and Figure 2 The X, Y, and Z coordinate systems shown in .

[0031] See Figures 1 to 4The mounting plate 1 has a first side surface and a second side surface adjacent to each other. Both the first side surface and the second side surface are vertical surfaces. The first side surface is distributed along the X-axis direction, and the second side surface is distributed along the Y-axis direction. M first control valves 2 are arranged along the X-axis direction on the first side surface of the mounting plate 1, and N second control valves 3 are arranged along the Y-axis direction on the second side surface of the mounting plate 1. The mounting plate 1 is provided with M·N mounting holes 101 arranged along the Z-axis direction, which pass through the upper and lower sides thereof. An actuator 4 is movably installed in each mounting hole 101. Any first control valve 2 is used to control the corresponding M i(i＝1,2,3……M) The lower ends of the N mounting holes 101 on the row are connected to the compressed gas or the outside atmosphere, and any second control valve 3 is used to control the N corresponding j(j＝1,2,3……N) The upper ends of the M mounting holes 101 in the row are connected to the compressed gas or the outside atmosphere, so that the M mounting holes 101 are connected to the compressed gas or the outside atmosphere. i Column and N j A pressure differential exists between the upper and lower ends of an actuator 4 at a row node (or intersection), thereby controlling the movement of the actuator 4. The present invention achieves independent control of M·N actuators 4 by combining M+N control valves, significantly saving costs, presenting an overall modular design, and reducing volume.

[0032] Understandably, M i The columns from left to right are M1 column, M2 column, M3 column...M M The mounting holes 101 in each row are arranged along the Y axis. The Nj rows are N1, N2, N3, and Nj from the front to the back. N There are M mounting holes 101 in each row, and each row has M mounting holes 101 arranged along the X-axis.

[0033] Furthermore, the lower cover plate 5 is arranged at the bottom of the mounting plate 1, and the bottom plate 13 is arranged at the bottom of the lower cover plate 5. The bottom plate 13 is fixed to the mounting plate 1 by a plurality of bolts and presses the lower cover plate 5. The top of the lower cover plate 5 is provided with M first grooves 501 (such as Figure 8 As shown), the first grooves 501 are all extended along the Y axis, and the first grooves 501 are located below the mounting holes 101, so that any one of the first grooves 501 can be connected to the corresponding M i The lower ends of the N mounting holes 101 in the row are connected.

[0034] The upper cover plate 6 is fixedly mounted on the top of the mounting plate 1 by a number of bolts. The upper cover plate 6 is provided with N second grooves 601 arranged along the Y axis (such as Figure 9 As shown), the second grooves 601 are all extended along the X axis, and the second grooves 601 are above the mounting hole 101, so that any second groove 601 will be connected to the corresponding N jThe upper ends of the M mounting holes 101 in a row are connected.

[0035] See Figure 4 and Figure 5 The mounting plate 1 is provided with M mutually unconnected first gas channels 102. Each of the M first gas channels 102 has one end located on the first side surface, and the other end of each of the M first gas channels 102 is located at the bottom of the mounting plate 1. Each of these channels is connected in a one-to-one correspondence with the M first grooves 501. Furthermore, the mounting plate 1 is provided with N mutually unconnected second gas channels 103. Each of the N second gas channels 103 has one end located on the second side surface, and the other end of each of the N second gas channels 103 is located at the top of the mounting plate 1. Each of these channels is connected in a one-to-one correspondence with the N second grooves 601.

[0036] See Figure 3 and Figure 6 The first valve plate 7 is fixedly mounted on the first side surface by a number of bolts. The first valve plate 7 is provided with M first air holes 701, second air holes 702, and third air holes 703 arranged in an X-axis direction. The M second air holes 702 are respectively opposite and connected to one end of the M first gas channels 102. Furthermore, the M second air holes 702 are respectively connected to the M first grooves 501 through the M first gas channels 102. A first exhaust connector 8 and a first vent connector 9 are installed at one end of the first valve plate 7. The first exhaust connector 8 is connected to the outside atmosphere, and the first vent connector 9 is connected to the compressed gas supply equipment. A third groove and a fourth groove are provided along the X-axis direction on the side of the first valve plate 7 facing the mounting plate 1. The third groove connects the M first air holes 701 and is connected to the first exhaust connector 8; the fourth groove connects the M third air holes 703 and is connected to the first vent connector 9.

[0037] M first control valves 2 are mounted on the first valve plate 7 along the X-axis. Each first control valve 2 has a first port A, a first port P, and a first port B. The first port A is connected to the first air hole 701 in a one-to-one correspondence, the first port P is connected to the second air hole 702 in a one-to-one correspondence, and the first port B is connected to the third air hole 703 in a one-to-one correspondence. When the first control valve 2 is operating, the first port P is connected to the first port B; when the first control valve 2 is not operating, the first port P is connected to the first port A.

[0038] See Figure 3 and Figure 7The second valve plate 10 is fixed to the second side surface via a plurality of bolts. The second valve plate 10 is provided with N fourth air holes 1001, fifth air holes 1002, and sixth air holes 1003, spaced along the X-axis. The N fifth air holes 1002 correspond to and communicate with one end of each of the N second gas channels 103. Furthermore, the N fifth air holes 1002 are connected to the N second grooves 601 via the N second gas channels 103. A second exhaust connector 11 and a second vent connector 12 are mounted on one end of the second valve plate 10. The second exhaust connector 11 is also connected to the outside atmosphere, and the second vent connector 12 is also connected to the compressed gas supply. A fifth groove and a sixth groove are provided along the Y-axis on the side of the second valve plate 10 facing the mounting plate 1. The fifth groove connects the N fourth air holes 1001 and communicates with the second exhaust connector 11. The sixth groove connects the N sixth air holes 1003 and communicates with the second vent connector 12.

[0039] N second control valves 3 are mounted on the second valve plate 10 along the Y-axis. Each second control valve 3 has a second port A, a second port P, and a second port B. The second port A is connected to the fourth air hole 1001 in a one-to-one correspondence, the second port P is connected to the fifth air hole 1002 in a one-to-one correspondence, and the second port B is connected to the sixth air hole 1003 in a one-to-one correspondence. When the second control valve 3 is operating, the second port P is connected to the second port B. When the second control valve 3 is not operating, the second port P is connected to the second port A.

[0040] In this embodiment, the first control valve 2 and the second control valve 3 are both five-port two-position solenoid valves, and the two R ports are blocked.

[0041] Specifically, the actuator 4 is a piston rod, which is provided with a rod portion and a piston portion 401 located at the upper end of the rod portion. The piston portion 401 divides the mounting hole 101 into an upper cavity and a lower cavity, and the upper end surface and the lower end surface of the piston portion 401 have the same area, ensuring that in both the upper cavity and the lower cavity are not ventilated and both are ventilated, the forces acting on the two ends of the actuator 4 are consistent, so that the actuator 4 under this condition is in a stationary state.

[0042] See Figure 3 The lower end of the actuator 4 passes through the lower cover 5 and the bottom plate 13 and can be used as the output terminal. Each actuator 4 is fitted with a sealing ring 14, which is compressed and positioned between the lower cover 5 and the bottom plate 13 to effectively prevent gas leakage between the actuator 4 and the bottom plate 13.

[0043] In addition, the present invention has sealing gaskets installed between the lower cover plate 5, the upper cover plate 6, the first valve plate 7, the second valve plate 10 and the mounting plate 1, and the sealing gaskets are respectively provided with through holes corresponding to the channel openings on the corresponding sides of the mounting plate 1, which not only prevents air leakage, but also ensures that the air paths of each channel are independent and not connected.

[0044] The working process of this embodiment is as follows:

[0045] Control all M first control valves 2 to be energized, and the first P port on each first control valve 2 is connected to the first B port, so that the compressed gas enters the lower cavity of the mounting hole 101 in sequence through the first ventilation joint 9, and all the third air holes 703, the first B port, the first P port, the second air hole 702, the first gas channel 102 and the first groove 501; at the same time, control all N second control valves 3 to be de-energized, and the second P port on each second control valve 3 is connected to the second A port, so that the outside atmosphere is connected to the upper cavity of the mounting hole 101 in sequence through the second exhaust joint 11, and all the fourth air holes 1001, the second A port, the second P port, the fifth air hole 1002, the second gas channel 103, and the second groove 601; in the initial state, the piston part 401 of the actuator 4 is subjected to the force of the compressed gas in the lower cavity and is located in the upper part of the mounting hole 101.

[0046] When a certain node position such as the piston rod at coordinate (i, j) needs to move, control the Mth i The first control valve 2 loses power, and the first P port of the first control valve 2 is connected to the first A port, so that the outside air is connected to the M in sequence through the first exhaust joint 8, a corresponding first air hole 701, the first A port of the first control valve 2, the first P port of the first control valve 2, a corresponding second air hole 702, a corresponding first gas channel 102, and a corresponding first groove 501. i At the same time, control the Nth j The second control valve 3 is energized, and the second P port of the second control valve 3 is connected to the second B port, so that the compressed gas sequentially passes through the second vent connector 12, a corresponding sixth air hole 1003, the second B port of the second control valve 3, the second P port of the second control valve 3, a corresponding fifth air hole 1002, a corresponding second air channel 103, and a corresponding second groove 601 into the N j The upper cavity of all the mounting holes 101 in a row.

[0047] Through the above M i The first control valve 2 and the Nth j The action of the second control valve 3, the actuator 4 located at the coordinate (i, j) will move downward under the action of the compressed gas, and the actuator 4 at the coordinate Mi The actuators 4 in the rest of the mounting holes 101 on the same row remain in their original state and do not move because no compressed gas is introduced into their upper and lower sides. j The actuators 4 in the remaining mounting holes 101 in the row also maintain their original state and do not move because compressed gas is introduced into the upper and lower sides thereof.

[0048] It can be seen that the present invention utilizes a combination control valve to realize the pneumatic control device of multiple actuators, and realizes the independent control of M·N actuators 4 by combining M+N control valves, which greatly reduces the number of control valves used, thereby significantly reducing the cost of use; the overall structure adopts a modular design, which saves a lot of space and reduces the volume, and can realize a smaller spatial layout while meeting the control conditions, which is beneficial for use in some occasions with a large number of actuators 4 and high space requirements; each actuator 4 of the pneumatic control device is distributed at the intersection nodes of rows and columns in an array manner, which can realize a layout of any number M·N, and can be independently controlled by combined signals, with strong scalability to meet different usage requirements; the control of the present invention is simple and reliable, and only different combination instructions need to be sent to the standard pneumatic control valve to complete the control of the actuator 4 at the specified position; in addition, the pneumatic control device of the present invention has the characteristics of fast response, high speed, and stability and reliability, and is particularly suitable for replacing a small standard three-axis mechanism to realize fixed-position grasping and lifting actions.

[0049] In the above description, many specific details are set forth in order to fully understand the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A pneumatic control device that uses a combination control valve to realize the action of multiple actuators, characterized in that: include: A mounting plate (1), M first control valves (2) arranged along the X-axis on a first side surface of the mounting plate (1), and N second control valves (3) arranged along the Y-axis on a second side surface of the mounting plate (1), wherein the mounting plate (1) is provided with M·N mounting holes (101) arranged in an array along the Z-axis, and an actuator (4) is movably installed in each mounting hole (101), and the first control valve (2) is used to control the corresponding M i One end of each of the N mounting holes (101) in the row is connected to the compressed gas or the outside atmosphere, and the second control valve (3) is used to control the corresponding N j The other end of each of the M mounting holes (101) on the row is connected to the compressed gas or the outside atmosphere, so as to control the M i Column and N j One of the execution elements (4) on the row node acts; wherein M and N are both natural numbers greater than or equal to 2; A lower cover plate (5) is installed at the bottom of the mounting plate (1), and M first grooves (501) are arranged along the X-axis on the lower cover plate (5). The first grooves (501) all extend along the Y-axis and correspond to the M i The lower ends of the N mounting holes (101) in the row are connected; an upper cover plate (6) is installed on the top of the mounting plate (1), and N second grooves (601) are arranged along the Y axis on the upper cover plate (6), and the second grooves (601) are all extended along the X axis and correspond to the N j The upper ends of the M mounting holes (101) in a row are connected; A first valve plate (7) is mounted on the first side surface, and M first control valves (2) are all mounted on the first valve plate (7); a second valve plate (10) is mounted on the second side surface, and N second control valves (3) are all mounted on the second valve plate (10); a first exhaust connector (8) and a first vent connector (9) are mounted on the first valve plate (7), and a second exhaust connector (11) and a second vent connector (12) are mounted on the second valve plate (10), the first exhaust connector (8) and the second exhaust connector (11) are connected to the outside atmosphere, and the first vent connector (9) and the second vent connector (12) are connected to a compressed gas supply device.

2. The pneumatic control device for realizing the operation of multiple actuators by using a combined control valve according to claim 1, characterized in that: The first valve plate (7) is provided with M first air holes (701), second air holes (702) and third air holes (703), each of which is in a one-to-one correspondence with the M first grooves (501); the M first air holes (701) are all in communication with the first exhaust connector (8), and the M third air holes (703) are all in communication with the first ventilation connector (9); Each of the first control valves (2) has a first A port, a first P port, and a first B port, wherein the first A port is connected to the first air hole (701) in a one-to-one correspondence, the first P port is connected to the second air hole (702) in a one-to-one correspondence, and the first B port is connected to the third air hole (703) in a one-to-one correspondence; When the first control valve (2) is in operation, the first P port thereon is communicated with the first B port; when the first control valve (2) is not in operation, the first P port thereon is communicated with the first A port.

3. The pneumatic control device for realizing the operation of multiple actuators by using a combined control valve according to claim 2, characterized in that: M first gas channels (102) are provided on the mounting plate (1), one end of each of the M first gas channels (102) is located on the first side surface, and is connected to the M second air holes (702) in a one-to-one correspondence; the other end of each of the M first gas channels (102) is located at the bottom of the mounting plate (1), and is connected to the M first grooves (501) in a one-to-one correspondence.

4. The pneumatic control device for realizing the operation of multiple actuators by using a combined control valve according to claim 1, characterized in that: The second valve plate (10) is provided with N fourth air holes (1001), fifth air holes (1002) and sixth air holes (1003), each of which is in a one-to-one correspondence with the N second grooves (601); the N fourth air holes (1001) are all in communication with the second exhaust connector (11), and the N sixth air holes (1003) are all in communication with the second ventilation connector (12); Each of the second control valves (3) has a second A port, a second P port, and a second B port, wherein the second A port is connected to the fourth air hole (1001) in a one-to-one correspondence, the second P port is connected to the fifth air hole (1002) in a one-to-one correspondence, and the second B port is connected to the sixth air hole (1003) in a one-to-one correspondence; When the second control valve (3) is in operation, the second P port thereon is communicated with the second B port; when the second control valve (3) is not in operation, the second P port thereon is communicated with the second A port.

5. The pneumatic control device for realizing the operation of multiple actuators by using a combined control valve according to claim 4, characterized in that: N second gas channels (103) are provided on the mounting plate (1), and one end of each of the N second gas channels (103) is located on the second side surface and is connected to the N fifth air holes (1002) in a one-to-one correspondence; the other end of each of the N second gas channels (103) is located on the top of the mounting plate (1) and is connected to the N second grooves (601) in a one-to-one correspondence.

6. The pneumatic control device for realizing the operation of multiple actuators by using a combination control valve according to claim 1, characterized in that: It also includes a bottom plate (13) installed at the bottom of the lower cover plate (5), the lower end of the actuator (4) is inserted into the bottom plate (13), and the actuator (4) is provided with a sealing ring (14), which is limited between the lower cover plate (5) and the bottom plate (13).

7. The pneumatic control device for realizing the operation of multiple actuators by using a combination control valve according to claim 1, characterized in that: The actuator (4) is provided with a piston portion (401), and the upper end surface and the lower end surface of the piston portion (401) have the same area.

Images