WO2020180137A1 - 공압 실린더 시스템 및 이를 포함하는 차단 밸브 - Google Patents
공압 실린더 시스템 및 이를 포함하는 차단 밸브 Download PDFInfo
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- WO2020180137A1 WO2020180137A1 PCT/KR2020/003140 KR2020003140W WO2020180137A1 WO 2020180137 A1 WO2020180137 A1 WO 2020180137A1 KR 2020003140 W KR2020003140 W KR 2020003140W WO 2020180137 A1 WO2020180137 A1 WO 2020180137A1
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- WIPO (PCT)
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- space
- pneumatic
- venting
- main
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
- F15B11/068—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam with valves for gradually putting pneumatic systems under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/75—Control of speed of the output member
Definitions
- the present invention relates to a pneumatic cylinder system and a shut-off valve comprising the same.
- a pneumatic cylinder is a device that performs a specific operation by air pressure.
- the pneumatic cylinder is controlled by a plurality of valves and can perform an up operation and a down operation by the pressure of supplied air.
- the pneumatic cylinder may include a pneumatic housing and a pneumatic piston mounted inside the pneumatic housing.
- the pneumatic piston separates the interior of the pneumatic housing into two independent spaces, and is movably coupled within the pneumatic housing.
- the pneumatic cylinder may perform a specific operation by moving the pneumatic piston in the other direction when air flows into the space on one side of the pneumatic housing. Conversely, when air flows into the space on the other side of the pneumatic housing, the pneumatic piston moves in one direction and may perform a specific operation.
- the pneumatic cylinder can move a specific device or component that is coupled to a pneumatic piston.
- the pneumatic cylinder may be hindered from rapidly moving in the other direction due to the pressure of air existing in the other space. That is, in the pneumatic cylinder, in order to increase the operating speed at which the pneumatic piston moves in the other direction, it is necessary to minimize the resistance caused by air existing in the space on the other side of the pneumatic housing.
- valves using pneumatic pressure are gradually expanded in use, in addition to the existing shut-off function, there are often cases that require a back-pressure shut-off function that quickly shuts off the backflow pressure or flow by increasing the shut-off speed.
- An object of the present invention is to provide a pneumatic cylinder system in which the moving speed of a pneumatic piston is increased, and a shut-off valve including the same.
- the pneumatic cylinder system of the present invention divides the pneumatic housing having a hollow inner space into a first space and a second space, and the second space by the pressure of air supplied to the first space or the second space. It includes a pneumatic piston moving in a space or a direction of the first space, and the first space or the second space positioned in a direction in which the pneumatic piston is to be moved is pre-vented.
- the pneumatic cylinder system of the present invention divides the internal space into a pneumatic housing having a hollow internal space, a first space and a second space, and the pressure of air supplied to the first space or the second space
- the shut-off valve of the present invention includes a valve body part in which a fluid path is formed in a direction in which the fluid flows, a transport body moving pneumatic cylinder for moving a transport body connected to a shield plate temporarily shielding the fluid path, and the It includes a powder inflow prevention cylinder that shields the movement path through which the conveying body is moved and opens the movement path when the conveying body is rotated, and the pneumatic cylinder for moving the conveying body or the powder inflow prevention cylinder is the pneumatic cylinder system mentioned above. It is characterized in that it is formed.
- the pneumatic cylinder system of the present invention has an effect of increasing the moving speed of the pneumatic piston by removing air pressure in the inner space of the pneumatic housing located in the direction in which the pneumatic piston is to move.
- the pneumatic cylinder system of the present invention increases the number of exhaust passages through which air in the internal space of the pneumatic housing located in the direction in which the pneumatic piston is to be moved, or increases the total cross-sectional area of the exhaust passage, thereby moving the pneumatic piston speed It has the effect of increasing.
- the pneumatic cylinder system of the present invention has an effect of reducing the initial driving pressure of the pneumatic piston by removing the air pressure in the inner space of the pneumatic housing located in the direction in which the pneumatic piston is to move.
- shut-off valve including the pneumatic cylinder system of the present invention can block the flow of fluid more quickly because the pneumatic piston of the pneumatic cylinder moves quickly.
- the powder inflow prevention ring acting as the pneumatic piston of the pneumatic cylinder system rapidly descends, so that the conveying body and the shield plate rotate quickly. There is an effect.
- shut-off valve including the pneumatic cylinder system of the present invention
- the conveying body and the shielding plate operated by the pneumatic cylinder system rapidly rotate to close the fluid passage.
- FIG. 1A is a block diagram of a pneumatic cylinder system according to an embodiment of the present invention.
- FIG. 1B is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- FIG. 2A is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- 3A is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- 3B is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- FIG. 4 is a perspective view of a shut-off valve to which a pneumatic cylinder system according to an embodiment of the present invention is applied.
- FIG. 7A is a schematic configuration diagram of a pneumatic cylinder applied to the shutoff valve of FIG. 4.
- FIG. 7B is a schematic configuration diagram according to another embodiment of a pneumatic cylinder applied to the shut-off valve of FIG. 4.
- FIG. 8 is a vertical cross-sectional view showing the operation of the shutoff valve of FIG. 4 in a normal state.
- FIG. 9 is a vertical cross-sectional view showing the operation of the shut-off valve of FIG. 4 in a state of generating back pressure.
- 1A is a block diagram of a pneumatic cylinder system according to an embodiment of the present invention.
- 1B is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- the pneumatic cylinder system may include a pneumatic cylinder 100 and a control module 200, referring to FIG. 1A.
- one direction means the x direction
- the other direction means the opposite direction.
- the pneumatic cylinder 100 may be formed in various structures that linearly reciprocate or rotate reciprocating objects using air pressure. That is, the pneumatic cylinder 100 may be formed in a structure capable of linearly moving an object from one side to the other or rotating an object at a predetermined angle.
- the pneumatic cylinder 100 may be formed as a general single acting cylinder or a double acting cylinder. Hereinafter, a case where the pneumatic cylinder 100 is formed as a double acting cylinder will be described.
- the pneumatic cylinder 100 may include a pneumatic housing 110 and a pneumatic piston 120.
- the pneumatic cylinder 100 may move the pneumatic piston 120 from the first position X1 to the second position X2, and again from the second position X2 to the first position X1.
- the first position (X1) refers to a position where the pneumatic piston 120 has moved in one direction from the inside of the pneumatic housing 110
- the second position (X2) is the pneumatic piston 120 is the pneumatic housing ( 110) may indicate a position moved in the other direction.
- the pneumatic cylinder 100 moves the pneumatic piston 120 from the second position X2 to the first position X1
- the pneumatic cylinder 100 maintains the air pressure in the internal space located at one side of the pneumatic housing 110 at atmospheric pressure. By doing so, it is possible to increase the moving speed of the pneumatic piston 120.
- the pneumatic cylinder 100 may reduce the initial driving pressure of the pneumatic piston 120.
- the pneumatic cylinder 100 may increase the moving speed of the pneumatic piston 120 by exhausting the air pressure of the internal space located in the direction in which the pneumatic piston 120 is to move relatively quickly to atmospheric pressure in advance.
- the pneumatic cylinder 100 may be formed to increase a moving speed when the pneumatic piston 120 moves from the second position X2 to the first position X1.
- a corresponding configuration may be formed to be located at a corresponding position on the other side.
- both the required configuration may be formed on one side and the other side when it is necessary to increase the moving speed.
- the pneumatic housing 110 may be formed in a hollow cylindrical shape.
- the pneumatic housing 110 may include a piston hole 111 and a first main hole 112a.
- the pneumatic housing 110 may further include a second main hole 112b.
- the pneumatic housing 110 includes a first space 110a located in a first position X1 and a second space 110b located in a second position X2 by the pneumatic piston 120. Can be separated.
- the pneumatic piston 120 is positioned at the second position. It can be quickly moved from (X2) to the first position (X1).
- the piston hole 111 is formed by penetrating from the inside to the outside in the center of the other side of the pneumatic housing 110.
- the piston hole 111 provides a path necessary for a part of the pneumatic piston 120 to reciprocate.
- the first main hole 112a may be formed by penetrating into the first space 110a of the pneumatic housing 110 from an outer peripheral surface of one side of the pneumatic housing 110.
- the first main hole 112a provides a path through which air required to operate the pneumatic piston 120 flows into or out of the first space 110a. Accordingly, the first main hole 112a may be formed to have an appropriate size in consideration of the operating pressure and operating speed of the pneumatic piston 120.
- the first main hole 112a may be formed when a speed increase is required when the pneumatic cylinder 100 moves from the second position X2 to the first position X1.
- the second main hole 112b may be formed by passing through the second space 110b of the pneumatic housing 110 from the outside of the other side of the outer peripheral surface of the pneumatic housing 110.
- the second main hole 112b provides a path through which air required to operate the pneumatic piston 120 flows into or out of the second space 110b. Accordingly, the second main hole 112b may be formed to have an appropriate size in consideration of the operating pressure and operating speed of the pneumatic piston 120.
- the second main hole 112b may be formed when a speed increase is required when the pneumatic cylinder 100 moves from the first position X1 to the second position X2.
- the pneumatic piston 120 may include a piston body 121.
- the pneumatic piston 120 may include a piston support bar 122.
- a part of the piston body 121 and the piston support bar 122 are mounted inside the pneumatic housing 110 to move from one side to the other, and reciprocate the article coupled to the piston support bar. have. Meanwhile, the pneumatic piston 120 may not include the piston support bar 122 depending on the structure as shown in FIGS. 7A and 7B.
- the piston body 121 may be formed in an approximately disk shape, and may have an outer diameter corresponding to the inner diameter of the pneumatic housing 110.
- the piston body 121 may be positioned to be movable inside the pneumatic housing 110 so that the outer circumferential surface faces the inner circumferential surface of the pneumatic housing 110.
- the piston body 121 may divide the inner space of the pneumatic housing 110 into a first space 110a and a second space 110b.
- the piston body 121 is equipped with a sealing means such as an O-ring on the outer circumferential surface, and is coupled to the inner circumferential surface of the pneumatic housing 110 and the O-ring in close contact. Accordingly, when the piston body 121 reciprocates the inside of the pneumatic housing 110, the air introduced into the first space 110a or the second space 110b is transferred to the second space 110b or the first space 110a. ) To prevent leakage.
- One side of the piston support bar 122 is coupled to the piston body 121 and the other side extends to the outside through the piston hole 111 of the pneumatic housing 110.
- the control module 200 may vent the first space 110a or the second space 110b in advance. In addition, the control module 200 may vent both the first space 110a and the second space 110b in advance.
- the control module 200 supplies air to the first space 110a of the pneumatic housing 110 to move the pneumatic piston 120 to the other side, and then communicates the first space 110a with the atmosphere. It can be converted to atmospheric pressure.
- the pneumatic piston 120 may be located at a position moved inside the pneumatic cylinder 100 by a friction force caused by an O-ring. Thereafter, the control module 200 may supply air to the second space 110b of the pneumatic housing 110 to move the pneumatic piston 120 to one side.
- the control module 200 may operate in the same manner even when air is supplied to the second space 110b.
- the control module 200 may be formed in various configurations for operating the pneumatic piston 120 as described above.
- the control module 200 includes a first main pipe 210a, a first main valve 220a, a first venting pipe 230a, a first venting valve 240a, and a second main pipe 210b. And a second main valve 220b.
- the first venting pipe 230a and the first venting valve 240a may be formed when it is necessary for the pneumatic cylinder 100 to rapidly move from the second position X2 to the first position X1.
- the control module 200 may further include a second venting pipe 230b and a second venting valve 240b.
- the second venting pipe 230b and the second venting valve 240b may be formed when it is necessary for the pneumatic cylinder 100 to rapidly move from the first position X1 to the second position X2.
- the control module 200 may have a plurality of exhaust passages for exhausting the air in the first space 110a.
- the number of exhaust passages for exhausting air from the first space 110a may be greater than the number of supply passages for supplying air to the first space 110a.
- the total cross-sectional area of the exhaust passage may be wider than the total cross-sectional area of the supply passage. For example, it will be described focusing on the case of rapidly moving the pneumatic piston 120 to the first position (X1).
- the control module 200 exhausts both the first main pipe 210a connected to the first space 110a and at least one first venting pipe 230a Use as a passage.
- the control module 200 uses only the first main pipe 210a connected to the first space 110a as a supply passage. Accordingly, the air in the first space 110a is simultaneously exhausted to the first venting pipe 230a or the second venting pipe 230b together with the first main pipe 210a, and the pneumatic piston 120 quickly Let it move. Contrary to the above case, the control module 200 may operate in the same manner even when air is supplied to the second space 110b.
- the control module 200 may be modularized into one controller.
- a first main valve 220a, a first venting valve 240a, a second main valve 220b, and a second venting valve 240b constituting the control module 200 may be installed inside one case.
- the first main pipe 210a, the first venting pipe 230a, the second main pipe 210b, and the second venting valve 240b each have a first main valve 220a and a It may be coupled to the first venting valve 240a, the second main valve 220b, and the second venting valve 240b.
- the first main valve 220a and the second main valve 220b may be integrally formed.
- the first main valve 220a and the second main valve 220b may be formed as one solenoid valve.
- the first main valve 220a and the first venting valve 240a may be integrally formed.
- the first main valve 220a and the first venting valve 240a may be formed as one solenoid valve.
- the second main valve 220b and the second venting valve 240b may be integrally formed.
- the second main valve 220b and the second venting valve 240b may be formed as one solenoid valve.
- first main valve 220a, the first venting valve 240a, the second main valve 220b, and the second venting valve 240b may be integrally formed.
- first main valve 220a, the first venting valve 240a, the second main valve 220b, and the second venting valve 240b may be formed as one solenoid valve.
- the control module 200 may include one main valve 220.
- the main valve 220 may be formed as one main valve acting as the first main valve 220a and the second main valve 220b of FIG. 1A.
- the first main pipe 210a and the second main pipe 210b may be coupled to the main valve 220.
- the main valve 220 may be connected to pipes 221, 222, and 223 necessary for supplying or exhausting air required for operation.
- the two pipes 221 and 223 are used to supply air or exhaust air to the first main pipe 210a or the second main pipe 210b, and the other pipe 222 is an additional first It may be used to exhaust air from the first space 110a or the second space 110b inside the pneumatic housing 110 together with the venting pipe 230a or the second venting pipe 230b.
- the first main pipe 210a has one end connected to the first main hole 112a of the pneumatic housing 110 and communicates with the first space 110a.
- the first main pipe 210a may be formed with a predetermined diameter so that the air flow rate required to move the pneumatic piston 120 at a required speed may be supplied.
- the first main valve 220a may open and close the first main pipe 210a so that air is supplied to the first space 110a and air is discharged from the first space 110a.
- the first main valve 220a may be formed as a double acting solenoid valve.
- the first main valve 220a is connected to the other end of the first main pipe 210a.
- the first main valve 220a is a pipe 221a necessary for supplying air to the first main pipe 210a or discharging air from the first main pipe 210a according to a connection relationship with the first main pipe 210a. , 222a) may be provided.
- the first venting pipe 230a has one end connected to the first main pipe 210a and the other end exposed to the atmosphere.
- the first venting pipe 230a may be connected between the first main hole 112a of the pneumatic housing 110 and the first main valve 220a.
- One or at least two of the first venting pipes 230a may be formed, and may be formed in plural according to the volume of the first space 110a and the diameter of the pneumatic housing 110.
- the first venting valve 240a may be coupled to the middle of the first venting pipe 230a.
- the first venting valve 240a may open and close the first venting pipe 230a to communicate the first space 110a with the atmosphere.
- the second main pipe 210b has one end connected to the second main hole 112b of the pneumatic housing 110 and communicates with the second space 110b.
- the second main pipe 210b may be formed with a predetermined diameter so that an air flow rate required to move the pneumatic piston 120 at a required speed may be supplied.
- the second main valve 220b may open and close the second main pipe 210b so that air is supplied to the second space 110b and air is discharged from the second space 110b.
- the second main valve 220b may be formed as a double acting solenoid valve.
- the second main valve 220b is connected to the other end of the second main pipe 210b.
- the second main valve 220b is a pipe 221b necessary for supplying air to the second main pipe 210b or discharging air from the second main pipe 210b according to a connection relationship with the second main pipe 210b. , 222b) may be provided.
- the second venting pipe 230b has one end connected to the second main pipe 210b and the other end exposed to the atmosphere.
- the second venting pipe 230b may be connected between the pneumatic housing 110 and the second main valve 220b.
- the second venting pipe 230b may be formed in at least one, and may be formed in plural according to the volume of the second space 110b and the diameter of the pneumatic housing 110.
- the second venting valve 240b may be coupled to the middle of the second venting pipe 230b.
- the second venting valve 240b may open and close the second venting pipe 230b to communicate the second space 110b with the atmosphere.
- the following describes a method of operating a pneumatic cylinder system according to an embodiment of the present invention.
- the pneumatic piston 120 moves from the first position X1 in one direction to the second position X2 in the other direction, and then returns to the first position X1.
- the pneumatic piston 120 moves from the first position (X1) to the second position (X2), there is no need to move quickly, and when moving back to the first position (X1), it is necessary to move quickly.
- the first main valve 220a is operated to supply air to the first space 110a through the first main pipe 210a.
- the first venting valve 240a maintains a closed state.
- the pneumatic piston 120 moves from the first position X1 to the second position X2 of the pneumatic housing 110 by the pressure of air supplied to the first space 110a.
- the second main valve 220b is operated, and air in the second space 110b is discharged to the outside through the second main pipe 210b.
- the second venting valve 240b is preferably maintained in a closed state.
- the operation of the first main valve 220a is stopped. If necessary, after the movement of the pneumatic piston 120 is stopped, when the time for stabilizing the movement of the pneumatic piston 120 elapses, the first venting valve 240a is opened and the first space 110a is brought to atmospheric pressure. do.
- the second main valve 220b is operated and the second space 110b through the second main pipe 210b. Air is supplied.
- the first venting valve 240a maintains an open state
- the second venting valve 240b maintains a closed state.
- the pneumatic piston 120 moves from the second position X2 to the first position X1 by the pressure of air supplied to the second space 110b.
- the first space (110a) is in an atmospheric pressure state, and the air located in the first space (110a) has been previously discharged to the atmosphere through the first venting valve (240a). You can move easily.
- the first main valve 220a maintains the first main pipe 210a in a closed state. Since the first main valve 220a is closed while air is supplied through the first main pipe 210a, a pressure state higher than atmospheric pressure can be maintained in the first space 110a. Accordingly, when the pneumatic piston 120 opens the first main valve 220a to move to the first position X1, the air supplied to the first space 110a is removed from the first main pipe 210a. 1 It takes time to be discharged to the outside through the main valve 220a, and movement of the pneumatic piston 120 may be delayed.
- FIG. 2A is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- a first venting hole 113a or a second venting hole 113b is formed in the pneumatic housing 110, and a first venting pipe 230a ) Or the second venting pipe 230b may be directly coupled to the first venting hole 113a or the second venting hole 113b.
- the first venting hole 113a may be formed by passing through the first space 110a from the outer circumferential surface of the pneumatic housing 110 to be connected to the first space 110a of the pneumatic housing 110.
- the second venting hole 113b may be formed by passing through the second space 110b from the outer circumferential surface of the pneumatic housing 110 to be connected to the second space 110b of the pneumatic housing 110.
- first venting hole 113a and the second venting hole 113b may be formed at positions connected to the first space 110a and the second space 110b, each having a variable size.
- first venting hole 113a may be formed at one end of the outer peripheral surface of the pneumatic housing 110 or at one side of the pneumatic housing 110.
- second venting hole 113b may be formed on the other side or the other side of the outer peripheral surface of the pneumatic housing 110.
- first venting valve 240a or the second venting valve 240b may be coupled to the first venting pipe 230a or the second venting pipe 230b. Accordingly, the first venting pipe 230a and the second venting pipe 230b are not coupled to the first main pipe 210a and the second main pipe 210b.
- the pneumatic cylinder system may have a plurality of first venting holes 113a and second venting holes 113b, respectively, and may be spaced apart along the circumferential direction of the pneumatic housing 110.
- at least two of the first venting pipe 230a and the second venting pipe 230b may be coupled to the first venting hole 113a and the second venting hole 113b, respectively.
- the first venting hole 113a and the second venting hole 113b may have the same diameter or a larger diameter as the first main hole 112a and the second main hole 112b.
- the diameters of the first venting hole 113a and the second venting hole 113b are formed to be large, the air in the first space 110a and the second space 110b may be discharged to the outside more quickly. .
- the pneumatic piston 120 when the pneumatic piston 120 moves from the second position X2 to the first position X1, the first space 110a through the first main pipe 210a and the first venting pipe 230a. ) Air can be quickly discharged to the outside. Accordingly, the pneumatic piston 120 may move to the first position X1 more quickly. That is, when the pneumatic piston 120 is moved from the second position (X2) to the first position (X1), the first venting valve (240a) is opened and the first space (110a) is maintained at atmospheric pressure. to be. Accordingly, the pneumatic piston 120 may move to the first position X1 more quickly.
- the control module 200 may include one main valve 220.
- the main valve 220 may be formed as one main valve acting as the first main valve 220a and the second main valve 220b of FIG. 2A.
- the first main pipe 210a and the second main pipe 210b may be coupled to the main valve 220.
- the main valve 220 may be connected to pipes 221, 222, and 223 required to supply or discharge air required for operation.
- the two pipes 221 and 223 are used to supply air or discharge air to the first main pipe 210a or the second main pipe 210b, and the other pipe 222 is an additional first It may be used to vent air in the first space 110a or the second space 110b inside the pneumatic housing 110 together with the venting pipe 230a or the second venting pipe 230b.
- 3A is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- 3B is a block diagram of a pneumatic cylinder system according to another embodiment of the present invention.
- a pneumatic cylinder system may be formed in a structure in which the pneumatic cylinder system according to FIG. 1A and the pneumatic cylinder system according to FIG. 2A are combined with reference to FIG. 3A. That is, in the pneumatic cylinder system, a first venting hole 113a or a second venting hole 113b is formed in the pneumatic cylinder 100, and the first venting pipe 230a or the second venting pipe 230b is the first It may be directly coupled to the venting hole 113a or the second venting hole 113b. In addition, in the pneumatic cylinder system, the first venting pipe 230a and the second venting pipe 230b may be coupled to the first main pipe 210a and the second main pipe 210b.
- the pneumatic cylinder system includes a first venting pipe 230a and a first main pipe coupled to the first venting hole 113a when the pneumatic piston 120 moves from the second position X2 to the first position X1. Air in the first space 110a may be discharged to the outside through the first venting pipe 230a coupled to the 210a. Accordingly, the pneumatic piston 120 may move to the first position X1 more quickly.
- the control module 200 may include one main valve 220.
- the main valve 220 may be formed as one main valve that acts as the first main valve 220a and the second main valve 220b of FIG. 3A.
- the first main pipe 210a and the second main pipe 210b may be coupled to the main valve 220.
- the main valve 220 may be connected to pipes 221, 222, and 223 required to supply or discharge air required for operation.
- the two pipes 221 and 223 are used to supply air or discharge air to the first main pipe 210a or the second main pipe 210b
- the other pipe 222 is additionally used as a first pipe. It may be used to vent air in the first space 110a or the second space 110b inside the pneumatic housing 110 together with the venting pipe 230a or the second venting pipe 230b.
- shut-off valve to which a pneumatic cylinder system according to an embodiment of the present invention is applied will be described.
- FIG. 4 is a perspective view of a shut-off valve to which a pneumatic cylinder system according to an embodiment of the present invention is applied.
- 5 is an exploded perspective view of the shut-off valve of FIG. 4.
- 6 is a vertical cross-sectional view of the shutoff valve of FIG. 4.
- 7A is a schematic configuration diagram of a pneumatic cylinder applied to the shut-off valve of FIG. 4.
- 7B is a schematic configuration diagram according to another embodiment of a pneumatic cylinder applied to the shut-off valve of FIG. 4.
- 8 is a vertical cross-sectional view showing the operation of the shutoff valve of FIG. 4 in a normal state.
- 9 is a vertical cross-sectional view showing the operation of the shut-off valve of FIG. 4 in a state of generating back pressure.
- shut-off valve of the present invention is not limited to the sliding back pressure shut-off valve of FIGS. 4 to 9, and is applied to the pneumatic cylinder system of FIGS. 1A to 3B to block the flow of a fluid such as gas or air flowing through the fluid flow path. It goes without saying that it can be applied to various structures of shut-off valves.
- a shut-off valve to which a pneumatic cylinder system according to an embodiment of the present invention is applied includes a valve body 10, a pneumatic cylinder 20 for moving a carrier, and a powder inflow prevention cylinder 30.
- Can include.
- the transfer body moving pneumatic cylinder 20 and the powder inflow prevention cylinder 30 differ in specific configurations, but the operating principle of the pneumatic cylinder system according to an embodiment of the present invention is applied. Therefore, the transport body moving pneumatic cylinder 20 and the powder inflow prevention cylinder 30 are the same as the reference numerals of FIG. 1A with respect to the configuration corresponding to the pneumatic cylinder system of FIG. 1A to aid understanding even though there are differences in specific configurations. Mark with a sign.
- the valve body 10 may be formed in a closed structure having a cylindrical or polygonal shape.
- the valve body part 10 includes a fluid inlet part 11, an inlet part cover 12, a coupling member 13, a side wall part 14, an outlet part cover 15, and a fluid outlet part 16.
- the valve body part 10 forms a fluid path 10a through which a fluid flows.
- the valve body 10 accommodates a pneumatic cylinder 20 for moving a conveying body and a cylinder 30 for preventing powder inflow therein.
- the valve body 10, referring to FIG. 6, is formed in a direction perpendicular to the fluid path, is closed when a fluid flows, and a moving path 10b that is opened when the conveying body 18a rotates. Can be equipped.
- the fluid inlet 11 may be formed to have a predetermined length in a direction in which the fluid is introduced.
- the inlet cover 12 may be integrated with the fluid inlet 11 to have a predetermined diameter, and may be disposed to cover the fluid inlet 11.
- the fluid outlet 16 may be formed to have a predetermined length in a direction in which the fluid flows.
- the outlet cover 15 is integrated with the fluid outlet 16 to have a predetermined diameter, and may be disposed to cover the fluid outlet 16.
- the side wall portion 14 may be disposed such that a fluid passage space portion is formed between the inlet cover 12 and the outlet cover 15.
- the side wall portion 14 may be formed in a closed structure having a cylindrical or polygonal shape.
- the upper surface of the inlet cover 12 and the side wall 14 integrated with the fluid inlet 11 may be assembled to maintain airtightness by a coupling member 13 such as a plurality of bolts.
- the lower surface of the outlet cover 15 and the sidewall portion 14 integrated with the fluid outlet 16 may also be assembled to maintain airtightness by a coupling member 13 such as a plurality of bolts.
- the valve body portion 10 of the shut-off valve has a structure that is sealed by these configurations.
- the transfer body moving pneumatic cylinder 20 may be disposed above the valve body 10.
- the transfer body moving pneumatic cylinder 20 is located outside the fluid path, and rotates the transfer body 18a on which the shield plate 18b is seated in the fluid path when back pressure occurs.
- the transfer body moving pneumatic cylinder 20 transfers the transfer body 18a, and the shield plate 18b transferred together may block the fluid path.
- the transfer body 18a may be transferred to a fluid path through a moving path.
- the transfer body moving pneumatic cylinder 20 includes a pneumatic housing 110 and a pneumatic piston 120. As shown in FIG. 7A, the pneumatic housing 110 is divided into a first space 110a and a second space 110b by a pneumatic piston 120. The pneumatic housing 110 is formed in a different shape from the pneumatic housing 110 according to the embodiment of FIG. 1A. The pneumatic housing 110 is formed in a substantially rectangular shape and an air flow path is formed in a U-shaped inside. The pneumatic housing 110 may have a rotation shaft 130 accommodated therein. The pneumatic piston 120 is formed in a different shape from the pneumatic piston 120 according to the embodiment of FIG. 1A.
- the pneumatic piston 120 may be moved to one side and the other side by air supplied to each of the first space 110a and the second space 110b of the pneumatic housing 110.
- the pneumatic piston 120 may rotate the rotation shaft 130 that is geared while moving to one side and the other side within a predetermined angle.
- the pneumatic piston 120 may be formed as one in consideration of the rotational force required to rotate the rotation shaft 130.
- the transport body moving pneumatic cylinder 20 operates by controlling the inflow of air by a control module 200 connected to the first space 110a and the second space 110b.
- the control module 200 may be formed the same as the control module 200 according to the embodiment of FIG. 1A. Accordingly, the first main pipe 210a and the second main pipe 210b of the control module 200 are respectively connected to the first space 110a and the second space 110b of the pneumatic housing 110.
- the control module 200 may be formed of the control module 200 according to FIGS. 2A and 3A. However, in this case, the first venting pipe 230a and the first venting valve 240a may be additionally formed in the pneumatic housing 110.
- the pneumatic piston 120 moves to one side and rotates the rotation shaft 130 at a predetermined angle.
- the pneumatic piston 120 may move to the other side and rotate the rotation shaft 130 at a predetermined angle.
- the rotation shaft 130 may be coupled to the transfer body 18a.
- the transfer body 18a may have a shield plate 18b mounted thereon. Accordingly, when the rotation shaft 130 rotates, the transport member 18a and the shield plate 18b seated on the transport member 18a may rotate together.
- the conveying body 18a and the shield plate 18b may be rotated by the rotation shaft 130 to block a path through which the process gas formed by the side wall portion 14 and the pneumatic housing 110 flows.
- the powder inflow prevention cylinder 30 may be disposed on the side of the valve body 10.
- the powder inflow prevention cylinder 30 includes a pneumatic housing 110 and a pneumatic piston 120. As shown in FIG. 8, the pneumatic housing 110 is separated into a first space 110a and a second space 110b by a pneumatic piston 120.
- the pneumatic housing 110 is formed in a different shape from the pneumatic housing 110 according to the embodiment of FIG. 1A.
- the pneumatic housing 110 simply receives and moves the pneumatic piston 120 and forms a path through which the process gas passes through the shut-off valve.
- the pneumatic piston 120 is formed in a different shape from the pneumatic piston 120 according to the embodiment of FIG. 1A.
- the pneumatic piston 120 may rise or fall by air supplied to the first space 110a and the second space 110b of the pneumatic housing 110, respectively.
- the powder inflow prevention cylinder 30 operates by controlling the inflow of air by a control module 200 connected to the first space 110a and the second space 110b.
- the control module 200 may be formed the same as the control module 200 according to the embodiment of FIG. 1A. Accordingly, the first main pipe 210a and the second main pipe 210b of the control module 200 are respectively connected to the first space 110a and the second space 110b of the pneumatic housing 110.
- the control module 200 may be formed of the control module 200 according to FIGS. 2A and 3A. However, in this case, the first venting pipe 230a and the first venting valve 240a may be additionally formed in the pneumatic housing 110.
- the pneumatic piston 120 When air is supplied to the first space 110a through the first main pipe 210a, the pneumatic piston 120 rises upward and shields an opening formed in the circumferential direction inside the sidewall 14.
- the shut-off valve operates normally so that the process gas flows from top to bottom. Since the pneumatic cylinder 100 shields the open portion of the side wall portion 14, the process gas does not flow out through the open portion.
- the pneumatic cylinder system of the present invention can increase the moving speed of the pneumatic piston by removing air pressure in the inner space of the pneumatic housing located in the direction in which the pneumatic piston is to move.
- shut-off valve including the pneumatic cylinder system of the present invention can block the flow of fluid more quickly because the pneumatic piston of the pneumatic cylinder moves quickly.
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Abstract
Description
도 3a는 본 발명의 다른 실시예에 따른 공압 실린더 시스템의 구성도이다.
도 3b는 본 발명의 다른 실시예에 따른 공압 실린더 시스템의 구성도이다.
도 4는 본 발명의 일 실시예에 따른 공압 실린더 시스템이 적용된 차단 밸브의 사시도이다.
도 5는 도 4의 차단 밸브에 대한 분해 사시도이다.
도 6은 도 4의 차단 밸브에 대한 수직 단면도이다.
도 7a는 도 4의 차단 밸브에 적용된 공압 실린더의 개략적인 구성도이다.
도 7b는 도 4의 차단 밸브에 적용된 공압 실린더의 다른 실시예에 따른 개략적인 구성도이다.
도 8은 도 4의 차단 밸브의 정상 상태에서의 작동을 나타내는 수직 단면도이다.
도 9는 도 4의 차단 밸브의 역압 발생 상태에서의 작동을 나타내는 수직 단면도이다.
[삭제]
도 2a는 본 발명의 다른 실시예에 따른 공압 실린더 시스템의 구성도이다.
한편, 본 발명의 다른 실시예에 따른 공압 실린더 시스템은, 제어 모듈(200)이 하나의 메인 밸브(220)를 포함할 수 있다. 예를 들면, 상기 메인 밸브(220)는 도 2a의 제 1 메인 밸브(220a)와 제 2 메인 밸브(220b)의 작용을 하는 하나의 메인 밸브로 형성될 수 있다. 또한, 상기 제 1 메인 배관(210a)과 제 2 메인 배관(210b)은 메인 밸브(220)에 결합될 수 있다. 상기 메인 밸브(220)는 작동에 필요한 공기를 공급 또는 배출하는데 필요한 배관(221, 222, 223)이 연결될 수 있다. 여기서, 2 개의 배관(221, 223)은 제 1 메인 배관(210a) 또는 제 2 메인 배관(210b)으로 공기를 공급하거나 공기를 배출하는데 사용되며, 다른 1개의 배관(222)은 추가로 제 1 벤팅 배관(230a) 또는 제 2 벤팅 배관(230b)과 함께 공압 하우징(110) 내부의 제 1 공간(110a) 또는 제 2 공간(110b)에서 공기를 벤팅하는데 사용될 수 있다.
Claims (13)
- 중공인 내부 공간을 구비하는 공압 하우징 및상기 내부 공간을 제 1 공간과 제 2 공간으로 구분하며 상기 제 1 공간 또는 제 2 공간으로 공급되는 공기의 압력에 의하여 상기 제 2 공간 또는 제 1 공간 방향으로 이동하는 공압 피스톤을 포함하며,상기 공압 피스톤이 이동하고자 하는 방향에 위치하는 상기 제 1 공간 또는 제 2 공간이 사전에 벤팅되는 것을 특징으로 하는 공압 실린더 시스템.
- 제 1 항에 있어서,상기 공압 실린더 시스템은상기 제 1 공간 또는 제 2 공간을 사전에 벤팅시키는 제어 모듈을 더 포함하는 것을 특징으로 하는 공압 실린더 모듈.
- 제 2 항에 있어서,상기 공압 하우징은상기 제 1 공간으로 관통되는 제 1 메인 홀 및 상기 제 2 공간으로 관통되는 제 2 메인 홀을 구비하며,상기 공압 피스톤은 상기 공압 하우징의 내부 공간을 상기 제 1 공간과 제 2 공간으로 분리하는 피스톤 본체를 포함하며,상기 제어 모듈은 상기 제 1 메인 홀에 연결되는 제 1 메인 배관과, 상기 제 1 메인 배관에 연결되는 제 1 메인 밸브와, 상기 제 2 메인 홀에 연결되는 제 2 메인 배관 및 상기 제 2 메인 배관에 연결되는 제 2 메인 밸브를 포함하며,상기 제 1 공간에 연결되어 상기 제 1 공간의 공기를 벤팅시키는 제 1 벤팅 배관 및 상기 제 1 벤팅 배관에 결합되는 제 1 벤팅 밸브 또는 상기 제 2 공간에 연결되어 상기 제 2 공간의 공기를 벤팅시키는 제 2 벤팅 배관과 상기 제 2 벤팅 배관에 결합되는 제 2 벤팅 밸브를 더 포함하는 것을 특징으로 하는 공압 실린더 시스템.
- 제 3 항에 있어서,상기 제 1 벤팅 배관은 상기 제 1 메인 홀과 상기 제 1 메인 밸브 사이의 상기 제 1 메인 배관에 연결되며,상기 제 2 벤팅 배관은 상기 제 2 메인 홀과 제 2 메인 밸브 사이의 제 2 메인 배관에 연결되는 것을 특징으로 하는 공압 실린더 시스템.
- 제 3 항에 있어서,상기 공압 실린더는 상기 제 1 공간으로 관통되는 제 1 벤팅 홀 또는 상기 제 2 공간으로 관통되는 제 1 벤팅 홀을 포함하며,상기 제 1 벤팅 배관은 상기 제 1 벤팅 홀에 연결되며,상기 제 2 벤팅 배관은 상기 제 2 벤팅 홀에 연결되는 것을 특징으로 하는 공압 실린더 시스템.
- 제 5 항에 있어서,상기 제 1 벤팅 홀 또는 상기 제 2 벤팅 홀은 적어도 2개로 형성되며,상기 제 1 벤팅 홀 또는 제 2 벤팅 홀은 공압 하우징의 원주면을 따라 이격되어 위치하는 것을 특징으로 하는 공압 실린더 시스템.
- 제 5 항에 있어서,상기 제 1 벤팅 배관은 상기 제 1 메인 홀과 상기 제 1 메인 밸브 사이의 상기 제 1 메인 배관에 연결되며,상기 제 2 벤팅 배관은 상기 제 2 메인 홀과 제 2 메인 밸브 사이의 제 2 메인 배관에 연결되는 것을 특징으로 하는 공압 실린더 시스템.
- 중공인 내부 공간을 구비하는 공압 하우징과,상기 내부 공간을 제 1 공간과 제 2 공간으로 구분하며 상기 제 1 공간 또는 제 2 공간으로 공급되는 공기의 압력에 의하여 상기 제 2 공간 또는 제 1 공간 방향으로 이동하는 공압 피스톤 및상기 제 1 공간 또는 제 2 공간에 대한 공기의 공급과 배기를 제어하는 제어 모듈을 포함하며,상기 제 1 공간 또는 상기 제 2 공간의 공기를 배기하는 배기 통로는 적어도 2개로 형성되는 것을 특징으로 하는 공압 실린더 시스템.
- 제 8 항에 있어서,상기 배기 통로의 개수는 상기 제 1 공간 또는 제 2 공간으로 공기를 공급하는 공급 통로의 개수보다 많으며,상기 배기 통로의 전체 단면적은 상기 공급 통로의 전체 단면적보다 더 넓은 것을 특징으로 하는 공압 실린더 시스템.
- 제 8 항에 있어서,상기 제어 모듈은 상기 제 1 공간에 연결되는 제 1 메인 배관과 상기 제 1 공간에 연결되는 적어도 1개의 제 1 벤팅 배관 및 상기 제 2 공간에 연결되는 제 2 메인 배관을 포함하며,상기 제어 모듈은 상기 제 1 공간으로 공기를 공급할 때 상기 제 1 메인 배관을 공급 통로로 사용하며,상기 제 1 공간의 공기를 배기할 때 상기 제 1 메인 배관과 제 1 벤팅 배관을 동시에 개방하여 배기 통로로 사용하는 것을 특징으로 하는 공압 실린더 시스템.
- 내부에 유체가 흐르는 방향으로 유체 경로가 형성되는 밸브 바디부와,상기 유체 경로를 일시적으로 차폐하는 차폐판이 연결된 이송체를 이동시키는 이송체 이동 공압 실린더 및상기 유체 경로에서 상기 이송체가 이동되는 이동 경로를 차폐하며, 상기 이송체가 회전될 때 상기 이동 경로를 개방하는 파우더 유입 방지 실린더를 포함하며,상기 이송체 이동 공압 실린더 또는 상기 파우더 유입 방지 실린더는 제 1 항 내지 제 10 항중 어느 하나의 항에 따른 공압 실린더 시스템으로 형성되는 것을 특징으로 하는 차단 밸브.
- 제 11 항에 있어서,상기 이송체 이동 공압 실린더는 상기 유체 경로를 차단할 때 상대적으로 이동 속도가 빠른 것을 특징으로 하는 차단 밸브.
- 제 11 항에 있어서,상기 파우더 유입 방지 실린더는 상기 이동 경로를 개방할 때 상대적으로 이동 속도가 빠른 것을 특징으로 하는 차단 밸브.
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JP2000199502A (ja) * | 1998-11-05 | 2000-07-18 | Smc Corp | アクチュエ―タ制御回路 |
JP5164047B2 (ja) * | 2008-05-02 | 2013-03-13 | 国立大学法人 筑波大学 | アクチュエータ、アクチュエータの制御方法及びアクチュエータの制御プログラム |
KR101528458B1 (ko) * | 2013-01-18 | 2015-06-18 | (주) 유앤아이솔루션 | 슬라이딩 역압 차단 밸브 |
JP6095329B2 (ja) * | 2012-11-13 | 2017-03-15 | 三基工業株式会社 | シリンダ駆動装置およびこれを具備したゲート設備 |
KR20170001940U (ko) * | 2015-11-25 | 2017-06-02 | 주식회사 서연이화 | 어퍼 슬라이드 위치제어 타입 융착 장치 |
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US6050172A (en) * | 1997-04-04 | 2000-04-18 | Emhart Glass S.A. | Pneumatically operated mechanism |
CN108413029B (zh) * | 2018-05-11 | 2020-07-07 | 湖北汽车工业学院 | 气动机械自动变速器换挡力的控制装置及方法 |
-
2019
- 2019-03-06 KR KR1020190026017A patent/KR20200107222A/ko unknown
-
2020
- 2020-03-06 CN CN202080017664.2A patent/CN113518865A/zh active Pending
- 2020-03-06 TW TW109107461A patent/TWI741520B/zh active
- 2020-03-06 WO PCT/KR2020/003140 patent/WO2020180137A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000199502A (ja) * | 1998-11-05 | 2000-07-18 | Smc Corp | アクチュエ―タ制御回路 |
JP5164047B2 (ja) * | 2008-05-02 | 2013-03-13 | 国立大学法人 筑波大学 | アクチュエータ、アクチュエータの制御方法及びアクチュエータの制御プログラム |
JP6095329B2 (ja) * | 2012-11-13 | 2017-03-15 | 三基工業株式会社 | シリンダ駆動装置およびこれを具備したゲート設備 |
KR101528458B1 (ko) * | 2013-01-18 | 2015-06-18 | (주) 유앤아이솔루션 | 슬라이딩 역압 차단 밸브 |
KR20170001940U (ko) * | 2015-11-25 | 2017-06-02 | 주식회사 서연이화 | 어퍼 슬라이드 위치제어 타입 융착 장치 |
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KR20200107222A (ko) | 2020-09-16 |
TW202033889A (zh) | 2020-09-16 |
TWI741520B (zh) | 2021-10-01 |
CN113518865A (zh) | 2021-10-19 |
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