Manual control device

Abstract

The manual control device comprises a first valve and a second valve, the first valve comprises a first air inlet and a first air outlet, an air supply source is connected into the first air inlet, and the air supply source is led out of the first air outlet. The first valve is provided with a first button, and the first button blocks the first air inlet and the first air outlet before being started and communicates the first air inlet and the first air outlet after being started. The second valve comprises a second air inlet, a first working port, a second working port, a second air outlet and a third air outlet, the second air inlet is communicated with the first air outlet, the first working port is communicated with the rodless cavity, and the second working port is communicated with the rod cavity. The second valve is provided with a first switch, the first switch is communicated with the second air inlet, the first working opening and the rodless cavity and is communicated with the rod cavity, the second working opening and the third air outlet after being started, and the first switch and the first button are started at the same time. The manual control device needs two hands to control the first switch and the first button to be started simultaneously, so that potential safety hazards are reduced.

Description

Technical Field

[0001] This application relates to the field of pneumatic control technology, and particularly to a manual control device. Background Art

[0002] During the production and processing process, many steps such as loading and unloading, positioning, and ejecting materials rely on cylinders as actuators. A cylinder has a rodless chamber and a rod chamber separated by a reciprocating piston rod. When the volume of the rodless chamber increases and the volume of the rod chamber decreases, the piston rod extends; when the volume of the rodless chamber decreases and the volume of the rod chamber increases, the piston rod extends. In the prior art, operators use one hand to operate the valve to supply air or exhaust air to the rodless chamber and the rod chamber to control the extension or retraction of the piston rod, and use the other hand to operate the material to complete the corresponding steps. However, such a method easily causes the distraction of the operator's attention. When it is desired to extend the piston rod but the piston rod is miscontrolled to retract, or when it is desired to retract the piston rod but the piston rod is miscontrolled to extend, safety accidents are likely to occur. Utility Model Content

[0003] In view of this, this application provides a manual control device, which is beneficial to reducing potential safety hazards.

[0004] An embodiment of this application provides a manual control device for controlling a cylinder. The cylinder has a rodless chamber and a rod chamber, and the rodless chamber and the rod chamber are separated by a reciprocating piston rod. The manual control device includes a first valve and a second valve. The first valve includes a first air inlet and a first air outlet. The first air inlet is connected to a gas supply source, and the first air outlet leads out the gas supply source. The first valve is provided with a first button, and the first button is configured to block the connection between the first air inlet and the first air outlet before startup and connect the first air inlet and the first air outlet after startup. The second valve includes a second air inlet, a first working port, a second working port, a second air outlet, and a third air outlet. The second air inlet is connected to the first air outlet. The first working port is connected to the rodless chamber, and the second working port is connected to the rod chamber. The second valve is provided with a first switch, and the first switch is configured to connect the second air inlet, the first working port, and the rodless chamber, and connect the rod chamber, the second working port, and the third air outlet after startup, and the first switch and the first button are started simultaneously.

[0005] When controlling the piston rod of the cylinder to extend through the manual control device, the operator needs to start the first button to connect the first air inlet and the first air outlet, and also needs to start the first switch to connect the second air inlet, the first working port, and the rodless chamber, and connect the rod chamber, the second working port, and the third air outlet. Thus, the gas supply source can enter the rodless chamber and make the air pressure in the rodless chamber greater than that in the rod chamber to control the extension of the piston rod of the cylinder. The process of controlling the extension of the piston rod requires the operator to use both hands to start the first switch and the first button simultaneously, which is beneficial to concentrating the operator's attention and thus beneficial to reducing potential safety hazards.

[0006] In some embodiments, the first button is connected to the first valve by a first elastic member. The first button includes a gas passage, and the first elastic member is in a compressed state. Before activating the first button, the first elastic member acts on the first button to move the gas passage away from the first air inlet and the first air outlet; after activating the first button, the gas passage connects the first air inlet and the first air outlet.

[0007] In the manual control device of the above embodiments, due to the elastic action of the first elastic member, when it is necessary to activate the first button to connect the first air inlet and the first air outlet, the operator needs to continuously apply force to the first button to maintain the connection state between the first air inlet and the first air outlet, which is conducive to further concentrating the operator's attention. At the same time, after releasing the first button, the elastic action of the first elastic member is conducive to timely blocking the first air inlet and the first air outlet, which is conducive to further reducing potential safety hazards.

[0008] In some embodiments, the second valve is provided with a second switch, and the second switch is configured to connect the rodless chamber, the first working port, and the second air outlet, and connect the second air inlet, the second working port, and the rod chamber after activation, and the second switch is activated simultaneously with the first button.

[0009] In the manual control device of the above embodiments, when controlling the piston rod of the cylinder to retract through the manual control device, the operator needs to activate the first button to connect the first air inlet and the first air outlet, and also needs to activate the second switch to connect the rodless chamber, the first working port, and the second air outlet, and connect the second air inlet, the second working port, and the rod chamber. Thus, the air supply source can enter the rod chamber and make the air pressure in the rod chamber greater than the air pressure in the rodless chamber to control the piston rod of the cylinder to retract. This process of controlling the piston rod to retract requires the operator to use both hands to activate the second switch and the first button simultaneously, which is conducive to concentrating the operator's attention and thus conducive to reducing potential safety hazards.

[0010] In some embodiments, the manual control device further includes a pressure regulating valve, which is connected to the air supply source and the first air inlet, and the pressure regulating valve regulates the air pressure of the air supply source entering the first air inlet.

[0011] In the manual control device of the above embodiments, regulating the air pressure of the air supply source entering the rodless chamber through the pressure regulating valve is conducive to adjusting the extending speed of the piston rod, which is conducive to further reducing potential safety hazards.

[0012] In some embodiments, the number of second valves is multiple, the first air outlet is connected to the second air inlets of the multiple second valves, and each second valve is connected to a separate cylinder.

[0013] In the manual control device of the above embodiment, by simultaneously activating the first button and the first switch of different second valves, the piston rod of the corresponding cylinder can be extended, which is beneficial to improving the convenience of controlling multiple cylinders through the manual control device on the premise of reducing potential safety hazards.

[0014] In some embodiments, the manual control device further includes a housing, which includes a bottom plate and side plates. The bottom plate and the side plates enclose a receiving space, and the first valve and the second valve are disposed in the receiving space and fixed to the bottom plate.

[0015] In the manual control device of the above embodiment, the bottom plate plays a role in fixing and supporting the first valve and the second valve, which is beneficial to keeping the manual control device stable, and thus beneficial to improving the convenience of simultaneously activating the first button and the first switch.

[0016] In some embodiments, the housing further includes a cover plate that covers the receiving space. The cover plate is provided with a second button, and the second button is connected to the first switch. The first button and the second button are partially disposed in the receiving space and protrude from the cover plate.

[0017] In the manual control device of the above embodiment, the cover plate covering the receiving space is beneficial to protecting the first valve and the second valve disposed in the receiving space and the components connecting the first valve and the second valve, thus being beneficial to the long-term use of the manual control device. The first button and the second button protruding from the cover plate are beneficial to attracting and further concentrating the attention of the operator, thus being beneficial to further reducing potential safety hazards. Moreover, by applying force to the protruding parts of the first button and the second button, the communication of the first valve and the second valve can be conveniently controlled.

[0018] In some embodiments, the second button includes a main body member, a movable member, and a second elastic member. The main body member is fixed to the cover plate, the movable member is movably disposed in the main body member and connected to the first switch, and the second elastic member is in a compressed state and abuts against the main body member and the movable member respectively.

[0019] In the manual control device of the above embodiment, since the second valve is disposed in the receiving space, the first switch can be conveniently activated by pressing the movable member. And after releasing the movable member, the elastic action of the second elastic member is beneficial to promptly stopping the first switch, thus being beneficial to further reducing potential safety hazards.

[0020] In some embodiments, the movable member includes a working end and an operating end that are oppositely disposed. The working end is the end close to the second valve, the operating end is the end far from the second valve, the working end is connected to the first switch, and the operating end does not protrude beyond the main body member.

[0021] In the manual control device of the above embodiment, the operation end not exceeding the main body member is beneficial to reducing the occurrence of accidental contact with the movable member. Moreover, when the operator needs to activate the first switch, it is necessary to make the operation end concave relative to the main body member, which is beneficial to further concentrating the operator's attention, and thus beneficial to further reducing potential safety hazards.

[0022] In some embodiments, the second button further includes a limiting member, which is arranged at one end of the movable member close to the second valve and abuts against one end of the main body member close to the second valve.

[0023] In the manual control device of the above embodiment, after pressing and releasing the movable member, the limiting member and the main body member can form a locking, which is beneficial to reducing the possibility of the movable member disengaging from the main body member under the elastic action of the second elastic member. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The gas circuit connection diagram of the manual control device provided by an embodiment of the present application.

[0025] Figure 2 The cross-sectional view of the first valve and the first button provided by an embodiment of the present application.

[0026] Figure 3 The structural schematic diagram of the second valve provided by an embodiment of the present application.

[0027] Figure 4 The gas circuit connection diagram for controlling the piston rod to extend provided by an embodiment of the present application.

[0028] Figure 5 The gas circuit connection diagram for controlling the piston rod to retract provided by an embodiment of the present application.

[0029] Figure 6 The structural schematic diagram of the manual control device provided by an embodiment of the present application.

[0030] Figure 7 The cross-sectional view of the second button provided by an embodiment of the present application.

[0031] DESCRIPTION OF THE MAIN ELEMENT SYMBOLS

[0032] Manual control device 10

[0033] First elastic member 101

[0034] First valve 11

[0035] First air inlet 111

[0036] First air outlet 112

[0037] First button 12

[0038] Gas passage 121

[0039] Second valve 13

[0040] Second air inlet 131

[0041] First working port 132

[0042] Second working port 133

[0043] Second air outlet 134

[0044] Third air outlet 135

[0045] First switch 136

[0046] Second switch 137

[0047] Adjusting rod 138

[0048] Stopper 139

[0049] Pressure regulating valve 14

[0050] Three-way joint 15

[0051] Check valve 16

[0052] Housing 17

[0053] Bottom plate 171

[0054] Side plate 172

[0055] Cover plate 173

[0056] Handle 18

[0057] Second button 19

[0058] Main body part 191

[0059] Movable part 192

[0060] Acting end 1921

[0061] Operating end 1922

[0062] Second elastic member 193

[0063] Recess 194

[0064] Limiting member 195

[0065] Cylinder 20

[0066] Rodless cavity 201

[0067] Rod cavity 202

[0068] Piston rod 203

[0069] Gas supply source 30

[0070] Vacuum generator 40 Specific implementation manner

[0071] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0072] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "provided on" another component, it can be directly provided on the other component or there may be an intermediate component at the same time.

[0073] Unless otherwise specified, the term "plural" used herein refers to two or more.

[0074] The terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments, and are not intended to limit this application.

[0076] An embodiment of the present application discloses a manual control device for controlling a cylinder. The cylinder has a rodless chamber and a rod chamber, and the rodless chamber and the rod chamber are separated by a reciprocating piston rod. The manual control device includes a first valve and a second valve. The first valve includes a first air inlet and a first air outlet. The first air inlet is connected to a gas supply source, and the first air outlet leads out the gas supply source. The first valve is provided with a first button, and the first button is configured to block the first air inlet and the first air outlet before startup and connect the first air inlet and the first air outlet after startup. The second valve includes a second air inlet, a first working port, a second working port, a second air outlet, and a third air outlet. The second air inlet is connected to the first air outlet. The first working port is connected to the rodless chamber, and the second working port is connected to the rod chamber. The second valve is provided with a first switch, and the first switch is configured to connect the second air inlet, the first working port and the rodless chamber, and connect the rod chamber, the second working port and the third air outlet after startup, and the first switch and the first button are started at the same time.

[0077] When controlling the piston rod of the air cylinder to extend through the manual control device, the operator needs to activate the first button to connect the first air inlet and the first air outlet, and also needs to activate the first switch to connect the second air inlet, the first working port and the rodless cavity, and to connect the rod cavity, the second working port and the third air outlet. Thus, the air supply source can enter the rodless cavity and make the air pressure in the rodless cavity greater than that in the rod cavity to control the piston rod of the air cylinder to extend. The process of controlling the piston rod to extend requires the operator to use both hands to activate the first switch and the first button simultaneously, which is beneficial to concentrating the operator's attention and thus reducing potential safety hazards.

[0078] The following will describe some embodiments of the present application in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0079] Please refer to Figure 1 , the manual control device 10 includes a first valve 11. The first valve 11 includes a first air inlet 111 and a first air outlet 112. The first air inlet 111 is connected to the air supply source 30, and the first air outlet 112 leads out the air supply source 30.

[0080] Please refer to Figure 1 and Figure 2 , the first valve 11 is provided with a first button 12. The first button 12 is configured to block the connection between the first air inlet 111 and the first air outlet 112 before activation, and to connect the first air inlet 111 and the first air outlet 112 after activation.

[0081] Please refer to Figure 1 and Figure 3 , the manual control device 10 further includes a second valve 13. The second valve 13 includes a second air inlet 131, a first working port 132, a second working port 133, a second air outlet 134, and a third air outlet 135. The second air inlet 131 is connected to the first air outlet 112. The first working port 132 is connected to the rodless cavity 201, and the second working port 133 is connected to the rod cavity 202. The second valve 13 is provided with a first switch 136. The first switch 136 is configured to connect the second air inlet 131, the first working port 132 and the rodless cavity 201, and to connect the rod cavity 202, the second working port 133 and the third air outlet 135 after activation (see Figure 4 ). And, the first switch 136 and the first button 12 are activated simultaneously.

[0082] When the piston rod 203 of the air cylinder 20 is extended by manually controlling the device 10, the operator needs to activate the first button 12 to connect the first air inlet 111 and the first air outlet 112, and also needs to activate the first switch 136 to connect the second air inlet 131, the first working port 132 and the rodless cavity 201, and to connect the rod cavity 202, the second working port 133 and the third air outlet 135. Thus, the air supply source 30 can enter the rodless cavity 201 and make the air pressure in the rodless cavity 201 greater than the air pressure in the rod cavity 202 to control the extension of the piston rod 203 of the air cylinder 20. The process of controlling the extension of the piston rod 203 requires the operator to use both hands to activate the first switch 136 and the first button 12 simultaneously, which is beneficial to concentrating the operator's attention and thus reducing potential safety hazards.

[0083] In some embodiments, referring to Figure 2 , the first button 12 and the first valve 11 are connected by a first elastic member 101. The first button 12 includes a gas passage 121, and the first elastic member 101 is in a compressed state. Before activating the first button 12, the first elastic member 101 acts on the first button 12 to move the gas passage 121 away from the first air inlet 111 and the first air outlet 112. After activating the first button 12, the gas passage 121 connects the first air inlet 111 and the first air outlet 112. In this case, due to the elastic action of the first elastic member 101, when it is necessary to activate the first button 12 to connect the first air inlet 111 and the first air outlet 112, the operator needs to continuously apply force to the first button 12 to maintain the connection state between the first air inlet 111 and the first air outlet 112, which is beneficial to further concentrating the operator's attention. At the same time, after releasing the first button 12, the elastic action of the first elastic member 101 is beneficial to promptly blocking the first air inlet 111 and the first air outlet 112, thus further reducing potential safety hazards.

[0084] In some embodiments, the first valve 11 is a normally closed push-button manual valve. In some embodiments, the first valve 11 can also be other types of valves.

[0085] In some embodiments, referring to Figure 3 , the second valve 13 is provided with a second switch 137, and the second switch 137 is configured to connect the rodless cavity 201, the first working port 132 and the second air outlet 134, and to connect the second air inlet 131, the second working port 133 and the rod cavity 202 (see Figure 5 ) after activation. And, the second switch 137 and the first button 12 are activated simultaneously.

[0086] When controlling the retraction of the piston rod 203 of the air cylinder 20 through the manual control device 10, the operator needs to activate the first button 12 to connect the first air inlet 111 and the first air outlet 112, and also needs to activate the second switch 137 to connect the rodless cavity 201, the first working port 132 and the second air outlet 134, and to connect the second air inlet 131, the second working port 133 and the rod cavity 202. Thus, the air supply source 30 can enter the rod cavity 202 and can make the air pressure in the rod cavity 202 greater than the air pressure in the rodless cavity 201 to control the retraction of the piston rod 203 of the air cylinder 20. The process of controlling the retraction of the piston rod 203 requires the operator to control the second switch 137 and the first button 12 to be activated simultaneously with both hands, which is beneficial to concentrating the operator's attention and thus beneficial to reducing potential safety hazards.

[0087] In some embodiments, referring to Figure 4 and Figure 5 , the second valve 13 further includes an adjusting rod 138, and the adjusting rod 138 is provided with a plurality of stoppers 139.

[0088] In some embodiments, when the first switch 136 is activated, the adjusting rod 138 moves and drives the stopper 139 to block the first working port 132 and the second air outlet 134 (see Figure 4 ). In some embodiments, when the second switch 137 is activated, the adjusting rod 138 moves and drives the stopper 139 to block the second working port 133 and the third air outlet 135 (see Figure 5 ).

[0089] In some embodiments, the second valve 13 is a three-position five-way solenoid valve. In some embodiments, the second valve 13 is a two-position five-way solenoid valve. In some embodiments, the second valve 13 can also be other types of valves.

[0090] In some embodiments, referring to Figure 1 , the manual control device 10 further includes a pressure regulating valve 14. The pressure regulating valve 14 is connected to the air supply source 30 and the first air inlet 111, and the pressure regulating valve 14 regulates the air pressure of the air supply source 30 entering the first air inlet 111. By regulating the air pressure of the air supply source 30 entering the rodless cavity 201 through the pressure regulating valve 14, it is beneficial to regulating the extending speed of the piston rod 203, and thus beneficial to further reducing potential safety hazards.

[0091] In some embodiments, when the second working port 133 is connected to the rod cavity 202 and the second air inlet 131, the regulating valve regulates the air pressure of the air supply source 30 entering the rod cavity 202 to regulate the retracting speed of the piston rod 203.

[0092] In some embodiments, referring to Figure 1 , the number of the second valves 13 is multiple. For example, the number of the second valves 13 is 2, 3, 4, 5 or more.

[0093] In some embodiments, the first air outlet 112 communicates with the second air inlets 131 of a plurality of second valves 13, and each second valve 13 is connected to a separate cylinder 20. In this case, by simultaneously activating the first button 12 and the first switches 136 of different second valves 13, the piston rods 203 of the corresponding cylinders 20 can be controlled to extend, which is beneficial to improving the convenience of controlling a plurality of cylinders 20 by the manual control device 10 while reducing potential safety hazards.

[0094] In some embodiments, the first air outlet 112 communicates with the second air inlets 131 of a corresponding number of second valves 13 through a multi-way joint.

[0095] In some embodiments, please refer to Figure 1 , the first air outlet 112 first communicates with the second air inlet 131 of the first second valve 13 and the second three-way joint 15 through the first three-way joint 15, and then communicates with the second air inlet 131 of the second second valve 13 and the third three-way joint 15 through the second three-way joint 15, and so on to communicate with the second air inlets 131 of a plurality of second valves 13.

[0096] In some embodiments, please refer to Figure 1 , the manual control device 10 is further configured to control a vacuum generator 40, and the vacuum generator 40 is connected to a gas supply source 30 and provides an adsorption force.

[0097] In some embodiments, a pressure regulating valve 14 is connected between the vacuum generator 40 and the gas supply source 30.

[0098] In some embodiments, a one-way valve 16 is connected between the vacuum generator 40 and the pressure regulating valve 14. In this way, it is beneficial to control the one-way flow of the gas supply source 30 to the vacuum generator 40.

[0099] In some embodiments, please refer to Figure 6 , the manual control device 10 further includes a housing 17, and the housing 17 includes a bottom plate 171 and side plates 172. The bottom plate 171 and the side plates 172 enclose a receiving space (not shown in the figure), and the first valve 11 and the second valves 13 are disposed in the receiving space and fixed to the bottom plate 171. The bottom plate 171 plays a role in fixing and supporting the first valve 11 and the second valves 13, which is beneficial to keeping the manual control device 10 stable, and thus beneficial to improving the convenience of simultaneously activating the first button 12 and the first switches 136.

[0100] In some embodiments, please refer to Figure 6 , the manual control device 10 further includes a handle 18, and the handle 18 is disposed on the housing 17 to facilitate grasping the manual control device 10. In some embodiments, the handle 18 is disposed on the side plate 172.

[0101] In some embodiments, referring to Figure 6 , the housing 17 further includes a cover plate 173 which covers the receiving space. In this way, it is beneficial to protect the first valve 11 and the second valve 13 disposed in the receiving space and the components connecting the first valve 11 and the second valve 13, thus facilitating the long-term use of the manual control device 10.

[0102] In some embodiments, referring to Figure 6 , the cover plate 173 is provided with a second button 19 which is connected to the first switch 136. The first button 12 and the second button 19 are partially disposed in the receiving space and protrude from the cover plate 173. The protrusion of the first button 12 and the second button 19 from the cover plate 173 is beneficial to attracting and further concentrating the attention of the operator, thus facilitating the further reduction of potential safety hazards. Moreover, by applying force to the protruding parts of the first button 12 and the second button 19, the connection of the first valve 11 and the second valve 13 can be conveniently controlled.

[0103] In some embodiments, the second switch 137 is also connected to the second button 19.

[0104] In some embodiments, referring to Figure 7 , the second button 19 includes a main body member 191, a movable member 192 and a second elastic member 193. The main body member 191 is fixed to the cover plate 173, the movable member 192 is movably disposed in the main body member 191 and is connected to the first switch 136, and the second elastic member 193 is in a compressed state and abuts against the main body member 191 and the movable member 192 respectively. Since the second valve 13 is disposed in the receiving space, the first switch 136 can be conveniently activated by pressing the movable member 192. Moreover, after releasing the movable member 192, the elastic action of the second elastic member 193 is beneficial to promptly stopping the first switch 136, thus facilitating the further reduction of potential safety hazards.

[0105] In some embodiments, the main body member 191 is provided with a recess 194 which engages with the cover plate 173. In this way, it is beneficial to improve the stability of the main body member 191 fixed to the cover plate 173.

[0106] In some embodiments, referring to Figure 7, the movable member 192 includes an acting end 1921 and an operating end 1922 which are oppositely arranged. The acting end 1921 is the end close to the second valve 13, and the operating end 1922 is the end far from the second valve 13. The acting end 1921 is connected to the first switch 136, and the operating end 1922 does not extend beyond the main body member 191. In this case, the fact that the operating end 1922 does not extend beyond the main body member 191 is beneficial to reducing the occurrence of accidental contact with the movable member 192. Moreover, when an operator needs to activate the first switch 136, it is necessary to make the operating end 1922 concave relative to the main body member 191, which is beneficial to further concentrating the operator's attention and thus beneficial to further reducing potential safety hazards.

[0107] In some embodiments, please refer to Figure 7 , the second button 19 further includes a limiting member 195. The limiting member 195 is arranged at the end of the movable member 192 close to the second valve 13 and abuts against the end of the main body member 191 close to the second valve 13. After pressing and releasing the movable member 192, the limiting member 195 and the main body member 191 can form a locking, which is beneficial to reducing the possibility that the movable member 192 disengages from the main body member 191 under the elastic action of the second elastic member 193.

[0108] In some embodiments, the limiting member 195 is arranged at the acting end 1921.

[0109] The process of controlling the piston rod 203 of the cylinder 20 to extend by the manual control device 10 of the present application is as follows: The first air inlet 111 is connected to the air supply source 30; the first button 12 is activated to connect the first air inlet 111 and the first air outlet 112 of the first valve 11; the first switch 136 is activated to connect the first working port 132 of the second valve 13 to the rodless cavity 201 of the cylinder 20 and the second air inlet 131 of the second valve 13, and connect the second working port 133 of the second valve 13 to the rod cavity 202 of the cylinder 20 and the third air outlet 135 of the second valve 13. Thus, the air supply source 30 can enter the rodless cavity 201 of the cylinder 20 and make the air pressure in the rodless cavity 201 greater than the air pressure in the rod cavity 202, thereby controlling the piston rod 203 of the cylinder 20 to extend.

[0110] In addition, those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present application and are not used to limit the present application. As long as it is within the substantial scope of the present application, appropriate changes and variations made to the above embodiments fall within the scope disclosed by the present application.

Claims

1. A manual control device for controlling a cylinder, the cylinder having a rodless chamber and a rod chamber, the rodless chamber and the rod chamber being separated by a reciprocating piston rod, characterized in that, The manual control device includes: A first valve, including a first air inlet and a first air outlet. The first air inlet is connected to a gas supply source, and the first air outlet leads out the gas supply source. The first valve is provided with a first button, and the first button is configured to block the connection between the first air inlet and the first air outlet before startup and connect the first air inlet and the first air outlet after startup. A second valve, including a second air inlet, a first working port, a second working port, a second air outlet, and a third air outlet. The second air inlet is connected to the first air outlet. The first working port is connected to the rodless cavity, and the second working port is connected to the rod cavity. The second valve is provided with a first switch, and the first switch is configured to connect the second air inlet, the first working port, and the rodless cavity, and connect the rod cavity, the second working port, and the third air outlet after startup. And the first switch is started simultaneously with the first button.

2. The manual control device according to claim 1, characterized in that, The first button and the first valve are connected by a first elastic member. The first button includes a gas channel, and the first elastic member is in a compressed state. Before starting the first button, the first elastic member acts on the first button to move the gas channel away from the first air inlet and the first air outlet. After starting the first button, the gas channel connects the first air inlet and the first air outlet.

3. The manual control device according to claim 1, wherein The second valve is provided with a second switch, and the second switch is configured to connect the rodless cavity, the first working port, and the second air outlet, and connect the second air inlet, the second working port, and the rod cavity after startup. And the second switch is started simultaneously with the first button.

4. The manual control device according to claim 1, characterized in that The manual control device further includes a pressure regulating valve. The pressure regulating valve is connected between the gas supply source and the first air inlet, and the pressure regulating valve adjusts the air pressure of the gas supply source entering the first air inlet.

5. The manual control device according to claim 1, characterized in that, The number of the second valves is multiple. The first air outlet is connected to the second air inlets of multiple second valves, and each second valve is connected to a separate cylinder.

6. The manual control device according to claim 1, characterized in that, The manual control device further includes a housing. The housing includes a bottom plate and side plates. The bottom plate and the side plates enclose a receiving space. The first valve and the second valve are disposed in the receiving space and fixed to the bottom plate.

7. The manual control device according to claim 6, characterized in that, The housing further includes a cover plate. The cover plate covers the receiving space. The cover plate is provided with a second button. The second button is connected to the first switch. The first button and the second button are partially disposed in the receiving space and protrude from the cover plate.

8. The manual control device according to claim 7, characterized in that, The second button includes a main body member, a movable member, and a second elastic member. The main body member is fixed to the cover plate. The movable member is movably disposed in the main body member and connected to the first switch. The second elastic member is in a compressed state and abuts against the main body member and the movable member respectively.

9. The manual control device according to claim 8, characterized in that, The movable member includes an acting end and an operating end which are oppositely arranged. The acting end is the end close to the second valve, and the operating end is the end far from the second valve. The acting end is connected to the first switch, and the operating end does not protrude beyond the main body member.

10. The manual control device according to claim 8, wherein, The second button further includes a limiting member, the limiting member being disposed at one end of the movable member close to the second valve and abutting against one end of the main body member close to the second valve.

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