EP1860328A1 - Control device for a double-acting pneumatic actuator - Google Patents

Control device for a double-acting pneumatic actuator Download PDF

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Publication number
EP1860328A1
EP1860328A1 EP06010906A EP06010906A EP1860328A1 EP 1860328 A1 EP1860328 A1 EP 1860328A1 EP 06010906 A EP06010906 A EP 06010906A EP 06010906 A EP06010906 A EP 06010906A EP 1860328 A1 EP1860328 A1 EP 1860328A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
valve
pressure
chambers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06010906A
Other languages
German (de)
French (fr)
Inventor
Felix Ams
Reiner Ritter
Harald Steinle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asco Numatics GmbH
Original Assignee
Asco Numatics GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asco Numatics GmbH filed Critical Asco Numatics GmbH
Priority to EP06010906A priority Critical patent/EP1860328A1/en
Publication of EP1860328A1 publication Critical patent/EP1860328A1/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149Fluid interconnections, e.g. fluid connectors, passages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01Locking-valves or other detent i.e. load-holding devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/10Special arrangements for operating the actuated device with or without using fluid pressure, e.g. for emergency use
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/202Externally-operated valves mounted in or on the actuator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/26Locking mechanisms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/28Means for indicating the position, e.g. end of stroke
    • F15B15/2815Position sensing, i.e. means for continuous measurement of position, e.g. LVDT

Abstract

The invention relates to a device (10) for controlling a pneumatic, in particular double-acting, cylinder (11) with a housing (12) in whose closed interior (18) a piston (19) is displaceably guided, on which one from the housing (12) engages out guided piston rod (27), wherein in the interior (18) on both sides of the piston (19) each have a cylinder chamber (33, 34) is formed, each of which via associated channels (36, 38) and terminals (35, 37 ) is connected to compressed air outputs of a control valve (50), in particular a 4/3 servo valve. The device (10) has at least one means (60) for shutting off both cylinder chambers (33, 34) and blocking the piston (19) in order to prevent inadvertent piston movement when the supply voltage fails, and at least one means (70) for Back ventilation of both cylinder chambers (33, 34) in case of failure of the pressure supply and at least one means (80) for ventilation of both cylinder chambers (33, 34) to keep the piston (19) movable in the pressureless state (Fig. 1).

Description

  • The invention relates to a device for controlling a pneumatic, in particular double-acting, cylinder having the features in the preamble of claim 1.
  • For single-acting or double-acting cylinders in the form of adjusting cylinders and / or power and working cylinders a compact and cost-effective design is sought, this also applies to the means for controlling and / or control of such cylinders, which are to serve the reliable operation and handling ,
  • For this purpose, the invention provides in a device for controlling a pneumatic cylinder, in particular a double-acting cylinder, with the features of the preamble of claim 1, that at least one means for shutting off both cylinder chambers and blocking the piston is provided in case of failure of the supply voltage prevent unintended piston movement, that further comprises at least one means for Back ventilation of both cylinder chambers is provided in case of failure of the pressure supply and that at least one means for ventilating both cylinder chambers is provided to keep the piston in the pressureless state movable. In this way, such a cylinder is reliable and safe to handle. The maintenance and disassembly is facilitated and can be performed safer. Another advantage is that the cylinder can be operated in a variety of ways and can be easily adjusted. Furthermore, the conditions are created to fix the piston with piston rod in any position and predetermine by regulation any desired position of the piston with piston rod exactly and reproducibly. The same applies, in addition to the regulation of the position, also for the control of the cylinder force, which is also possible in a simple manner. The components required for this purpose are integrated in the cylinder, which thus also represents a functional component with regard to such a regulation. The cylinder can be made small and compact and easy and inexpensive. The assembly of the cylinder and thus any maintenance, repair and disassembly can be done easily and quickly and therefore cost.
  • Other special features of the invention and embodiments of the above-mentioned cylinder with control device are contained in the subclaims.
  • Further details and advantages of the invention will become apparent from the following description.
  • The full text of the claims is not reproduced above solely to avoid unnecessary repetition, but instead referred to merely by reference to the claims, however, whereby all of these claims have to be considered as explicit and essential to the invention at this point. All are in the The features mentioned above and following description, as well as the features which can be taken from the drawings alone, constitute further constituents of the invention, even if they are not particularly emphasized and, in particular, are not mentioned in the claims.
  • The invention is explained in more detail with reference to embodiments shown in the drawings. Show it:
  • Fig. 1
    a schematic longitudinal section of a pneumatic cylinder,
    Fig. 2
    1 is a schematic block diagram of a control device of the cylinder in FIG. 1,
    Fig. 3
    a schematic block diagram of a blocking means of the cylinder according to a first embodiment,
    Fig. 4
    a schematic block diagram of a blocking means of the cylinder according to a second embodiment,
    Fig. 5
    3 shows a schematic longitudinal section of an exemplary embodiment of a 2/2 valve in FIG. 3,
    Fig. 6
    a schematic longitudinal section of an embodiment of a check valve of the cylinder.
  • In the drawings there is schematically shown a device 10 which serves to control a pneumatic cylinder 11, the cylinder 11 preferably being double-acting, but this is not mandatory. The cylinder 11 shown in detail in Fig. 1 has a one-piece or, as shown, a multi-part Housing 12, which is formed here of a cylinder tube 13 and two cover parts 14 and 15, which are fixedly and tightly connected to the cylinder tube 13. By means of the cylinder tube 13 and the two cover parts 14, 15, an interior space 18 is closed, in which a piston 19 is guided displaceably. The piston 19 is approximately disc-shaped and carries on the circumference a guide band 20 and on both sides of this seal serving sealing rings 21 and 22. Further carries the piston 19 at both axial piston surfaces 23 and 24 in grooves recessed rings 25 and 26, z. B. O-rings, which serve for the axial stop of the piston 19 on the respective cover part 14 or 15 for damping the stop.
  • On the piston 19 engages a piston rod 27, which is fixedly connected to the piston 19 and extending in Fig. 1 from the piston 19, starting to the right and through the local cover part 15 therethrough and is led out of the housing 12. Between the cover part 15 and the piston rod 27, a guide sleeve 28 is arranged, which serves to support and guide the piston rod 27. In addition to the guide sleeve 28, a scraper ring 29 is held in the cover part 15, with which the piston rod 27 is in contact. The piston rod 27 is hollow inside, z. B. is provided with a coaxial longitudinal bore 30 which extends from the piston 19, starting within the piston rod 27 up to the region of the piston rod 27, which is located within the cover part 15. The longitudinal bore 30 serves together with the piston 19 to receive a part of a schematically indicated displacement sensor 31 which is contained in the cover part 14 and fixedly arranged. Part of the encoder 31 is also a ring magnet 32 in the piston 19, which is an integral part of the piston 19 with piston rod 27 and is moved during the movement of the piston 19 with piston rod 27 relative to the rest, fixed to the housing part of the encoder 31.
  • In the interior 18, a cylinder chamber 33 and 34 is formed on both sides of the piston 19, of which the cylinder chamber 33 through the cover part 14 and the one piston surface 23 and the other cylinder chamber 34 through the cover member 15 and the other piston surface 24 and each bounded by the corresponding portion of the cylinder tube 13. The lid portion 14 includes a schematically indicated pressure port 35 and associated inner channels 36 communicating with the cylinder chamber 33. The pressure port 35 serves the compressed air supply P2. In an analogous manner, the other cover part 15 also includes a pressure port 37 and associated therewith inner channels 38 which communicate with the cylinder chamber 34. The pressure port 37 is used for compressed air supply P4.
  • In each cover part 14, 15 is connected to the channels 36, 38 in communication pressure sensor 39 and 40 included, which may be connected via corresponding lines with a single common or each with an associated electrical connector 41 and 42, the z. B. is attached. The cylinder 11 also has z. B. the cover part 15, a pressure port 43 (P1), which serves the supply with supply pressure or the back vent.
  • The device 10 is provided for controlling the cylinder 11 with a schematically indicated control valve 50, which consists in particular of a 4/3 servo valve. The control valve 50 is connected to the cylinder 11 via lines which are connected to the pressure port 43 (P1) for the supply pressure and the back venting, and to the pressure port 35 or 37 of the cylinder 11 for the supply with P2 and P4, respectively. The control device 10 also has a schematically indicated regulator 51, which is provided for position and force control of the cylinder 11. From the regulator 51, a line 52 leads to the control input 53 of the control valve 50, via which the respective control signal of the regulator 51 is supplied to the control valve 50 of the cylinder 11 for its control. From the encoder 31 of the cylinder 11, a line 54 leads to the controller 51, via which a respective signal, which is a measure of the respective position of the piston 19, as the actual value of the controller 51 is supplied to control the position of the piston 19 with piston rod 27th The respective, a cylinder chamber 33 and 34 associated pressure sensor 39th or 40 detects the pressure prevailing in the cylinder chamber 33 and 34, respectively, and outputs an output signal as a respective measure of the force generated and acting on the piston rod 27. The pressure sensors 39, 40 are connected via lines 55 and 56 to the controller 51, via which the respective output signal is fed as an actual value to the controller 51 for controlling the cylinder force. The controller 51 also has a control output 57 which is connected via a line 58 with an emergency stop pilot valve 59, which will be explained later in more detail. The control valve 50 is as well as the emergency stop pilot valve 59 is electromagnetically controlled and closed in the normal position. If the controller 51 via the line 52, a control signal to the control input 53, so the control valve 50 z. B. reversed in one direction such that at the pressure port 35, the pressure P2 is present and the piston 19 is moved from the position shown in FIG. 1 to the right. The cylinder chamber 34 is vented via the inner channels 38 and the pressure port 37. If the activated control valve 50 is adjusted in the other direction, then the pressure P4 is applied to the pressure port 37, so that the piston 19 is acted upon by the pressure in the cylinder chamber 34 on the piston surface 24 and moves to the left in FIG. The other cylinder chamber 33 is vented via the inner channels 36 and the pressure port 35. On the cylinder 11, the supply pressure P1 is also supplied via the pressure port 43.
  • The device 10 has at least one means 60 for shutting off both cylinder chambers 33 and 34 and for blocking the piston 19 in the respective position in order to prevent inadvertent movement of the piston 19 with piston rod 27 in the event of failure of the supply voltage. 3 and 4 show respective embodiments of such means 60. In the example according to FIG. 3, the means 60 for closing off is formed by two valves 61, 62, of which the valve 61 with the cylinder chamber 33 and the valve 62 with the cylinder chamber 34 in FIG Connection stands and the respective barrier of the associated cylinder chamber 33 and 34 is used. Each valve 61, 62 is normally closed and back pressure safe. The valve 61 is within the Cover member 14 and the valve 62 disposed within the lid member 15, resulting in a simple, compact design. Each valve 61, 62 consists of a 2/2-valve, which is pneumatically controlled according to FIG. 3 via the supply pressure P1, but instead may be driven electromagnetically in another embodiment. For the pneumatic control of each cylinder chamber 33, 34 provided two 2/2-valves 61, 62, the emergency stop pilot valve 59 is provided, which is closed in the normal position and consists of a 3/2-way valve, which is controlled electromagnetically. This emergency stop pilot valve 59 takes energized its open position, not shown, and is adjusted in case of failure of the supply voltage by spring pressure in the illustrated closed position in which both valves 61, 62 are vented and thereby transferred via spring pressure in the closed position shown. Then, the pressures in the cylinder chambers 33 and 34 are locked, and the piston 19 comes to a standstill. The force acting on the respective piston surface 23 and 24 pressure in the cylinder chamber 33 and 34 causes a blocking of the piston 19 in the respective position. An unintentional movement of the piston 19 with piston rod 27 is thus prevented in case of failure of the supply voltage.
  • 4, a second embodiment of a means 60 for shutting off both cylinder chambers 33 and 34 is shown. This means 60 is formed of a single 4/2-slide valve 63 which is closed in the normal position and here pneumatically controlled, in another embodiment, not shown, but instead may also be controlled electromagnetically. One pressure outlet of the 4/2 spool valve 63 is connected to the cylinder chamber 33 and the other pressure outlet is connected to the cylinder chamber 34. In case of failure of the supply voltage of the energized in the open position emergency stop pilot valve 59 this goes into the closed position shown, so that the control pressure P1 at the 4/2-slide valve drops and this is moved by spring pressure in its closed position shown, in which the pressure P2 in the cylinder chamber 33 and the pressure P4 in the cylinder chamber 34th is shut off and thus the piston 19 is blocked with piston rod 27 in the instantaneous position against displacement.
  • As can be seen, the emergency stop pilot valve 59 is closed in the normal position shown and open when the supply voltage is applied. It consists of a 3/2-way valve, which is electromagnetically controlled. The described means 60 for blocking are arranged in a space-saving design in the respective cover part 14 and 15. Depending on the circumstances and the emergency stop pilot valve 59 may be attached to the cylinder 11 or integrated in this. In the embodiment shown, this is located on a schematically indicated distributor plate 64, in which a channel 65 is contained, which connects the two valves 61 and 62 together and can be under supply pressure P1. Instead of the distributor plate 64 with channel 65, a connecting line connecting both valves 61, 62 may also be provided. The passage 65 is connected to the emergency stop pilot valve 59 which is connected to the pressure port 43.
  • The device 10 further has at least one means 70 for venting back both cylinder chambers 33, 34 in the event of failure of the pressure supply. By this back venting means 70, a venting of both cylinder chambers 33 and 34 is possible, so that it is ensured that upon disassembly of the cylinder 11 in the cylinder chambers 33, 34 no pressure prevails. In a simple manner, in the illustrated embodiment, this at least one means 70 for venting both cylinder chambers 33, 34 from each cylinder chamber 33, 34 a check valve 71, 72 is formed, which is acted upon by the supply pressure and locks in pending supply pressure. A respective check valve 71, 72 of this type is shown in Fig. 1, which is also integrated in the respective cover part 14, 15 in a space-saving manner. An example of such a check valve 71, 72, Fig. 6. This check valve 71, 72 has a housing 73 in which a valve body 74, z. As a ball is included, by means of a spring 75 and is pressed by the supply pressure P1 to a valve seat 76 in the closed position. Acts on the valve body 74 no supply pressure P1, which ensures the closed position, the respective check valve 71, 72 is opened in the direction of arrow 77 by the pressure in the cylinder chambers 33, 34, whereby the respective cylinder chamber 33, 34 is vented back. Both check valves 71, 72 are connected to each other via a channel 78 in the distributor plate 64, which is connected to the pressure port 43, wherein also here instead of the channel 78, a connecting line may be provided.
  • In another embodiment, not shown, the at least one means 70 for venting back both cylinder chambers 33, 34 may also be formed from a 4/2-slide valve controlled by the supply pressure analogous to the slide valve 63 in FIG.
  • The device 10 also has at least one means 80 for ventilating both cylinder chambers 33, 34 in order to make the piston 19 movable in the unpressurized state. This at least one means 80 for ventilating both cylinder chambers 33, 34 may be analogous to the means 70 for venting from each cylinder chamber 33, 34 a check valve 81, 82 formed, which is indicated schematically in Fig. 1 and disposed within the cover member 14 and 15 respectively wherein each check valve 81, 82 communicates with the atmosphere and opens upon the occurrence of a triggered by piston movement in the respective cylinder chamber 33, 34 negative pressure. These open to the atmosphere contained in the cover parts 14, 15 outputs each have a filter 83 and 84, which avoids a Schmutzansaugung into the interior of the cylinder 11. The structural design of each check valve 81, 82 may correspond to that of FIG. 6.
  • In another embodiment, not shown, this also at least one means for ventilation 80 of both cylinder chambers 33, 34 from a 4/2-slide valve controlled via the supply pressure corresponding to that 63 in FIG. 4.
  • In Fig. 5, an example of the structural design of one of the valves 61, 62 of the means 60 for blocking is shown. The valve 61, 62 has a control port 66, at which the supply pressure P1 can be present. Within a housing 67, a valve member 68 is displaceable against the action of a spring 69 between a closed position shown and an open position. The valve member 68 is urged to move into the open position by a clamped in the housing 67 membrane 86 which is curved or folded down under the effective supply pressure in Fig. 5 and a relatively large area a head portion 87 of the valve member 68 touches and the latter against the spring 69th from the closed position in the open position, not shown, moves according to arrow 88. In this open position, the working pressure is fed to the control channel 90 via the control channel 89, which is connected to a corresponding cylinder chamber, for. B. the cylinder chamber 33 at the valve 61, is in communication.
  • As can be seen, the described control device 10 and the cylinder 11 are simple and in particular extremely compact, which is achieved in particular by the integration of the at least one means for blocking 60, for back ventilation 70 and for ventilation 80 in the respective cover part 14, 15. The cylinder 11 offers various functions, namely the blocking of the piston in case of failure of the supply voltage, further the venting of both cylinder chambers 33, 34 in case of failure of the pressure supply, so that upon disassembly of the cylinder 11 no pressure in the cylinder chambers 33, 34 more prevails, as well the possibility of ventilation of both cylinder chambers 33, 34 to keep the piston 19 in the pressureless state movable.

Claims (21)

  1. Device for controlling a pneumatic, in particular double-acting, cylinder (11), with a housing (12) in whose closed interior (18) a piston (19) is displaceably guided, on which a piston rod (27) led out of the housing (12) is displaceably guided engages, wherein in the interior (18) on both sides of the piston (19) each have a cylinder chamber (33, 34) is formed, each of which via associated channels (36, 38) and connections (35, 37) with compressed air outputs of a control valve (50 ), in particular a 4/3 servovalve,
    characterized,
    in that at least one means (60) for shutting off both cylinder chambers (33, 34) and blocking the piston (19) is provided in order to prevent inadvertent piston movement when the supply voltage fails, and at least one means (70) for bleeding back both cylinder chambers (33, 34) is provided in case of failure of the pressure supply and that at least one means (80) for ventilating both cylinder chambers (33, 34) is provided to keep the piston (19) movable in the unpressurized state.
  2. Device according to claim 1,
    characterized,
    in that the at least one shut-off means (60) is formed by a 4/2 slide valve (63) whose pressure outputs are connected to the cylinder chambers (33, 34) and which is closed in normal position.
  3. Device according to claim 2,
    characterized,
    that the 4/2-gate valve (63) is controlled electromagnetically.
  4. Device according to claim 2,
    characterized,
    that the 4/2-gate valve (63) is pneumatically controlled.
  5. Device according to claim 1,
    characterized,
    in that the at least one means (60) for closing off each cylinder chamber (33, 34) is formed by a 2/2 valve (61, 62) which is each back pressure-proof and is actuated either electromagnetically or pneumatically, whereby the 2/2 Valve (61, 62) is closed in normal position.
  6. Device according to claim 4 or 5, characterized
    characterized,
    in that an emergency stop pilot valve (59) is provided for the pneumatic actuation of the one 4/2 slide valve (63) or the two 2/2 valves (61, 62) provided for each cylinder chamber (33, 34).
  7. Device according to claim 6,
    characterized,
    that the emergency stop pilot valve (59) is formed of a 3/2-way valve that is closed in the normal position.
  8. Device according to claim 6 or 7,
    characterized,
    that the emergency stop pilot valve (59) is electromagnetically controlled.
  9. Device according to claim 1,
    characterized,
    in that the at least one means (70) for venting both cylinder chambers (33, 34) and / or the at least one means (80) for ventilating both cylinder chambers (33, 34) is formed by a 4/2-slide valve controlled by the supply pressure, whose pressure outputs are connected to the cylinder chambers (33, 34).
  10. Device according to claim 1,
    characterized,
    in that the at least one means (70) for venting both cylinder chambers (33, 34) out of each cylinder chamber (33, 34) is formed by a check valve (71, 72), which is acted upon by the supply pressure and blocks when there is a supply pressure.
  11. Device according to claim 1,
    characterized,
    in that the at least one means (80) for ventilating both cylinder chambers (33, 34) of a cylinder chamber (33, 34) is formed by a non-return valve (81, 82) which communicates with the atmosphere in each case and in the event of piston movement in the cylinder each cylinder chamber (33, 34) triggered negative pressure opens.
  12. Device according to one of claims 1 to 11,
    characterized,
    in that a regulator (51) is provided for regulating the position and force of the cylinder (11), whose control signal is supplied to the control valve (50) of the cylinder (11) for its control.
  13. Device according to one of claims 1 to 12,
    characterized,
    in that the cylinder (11) per cylinder chamber (33, 34) has a pressure sensor (39, 40) detecting the pressure therefrom, the respective output signal of which a measure of the generated force is supplied to the regulator (51) for controlling the cylinder force.
  14. Device according to one of claims 1 to 13,
    characterized,
    in that the cylinder (11) has a displacement sensor (31) which detects the respective position of the piston (19) with piston rod (27) and whose respective output signal representing the respective piston position is fed to the regulator (51) for controlling the position of the piston (19) with piston rod (27).
  15. Device according to one of claims 7 to 14,
    characterized,
    that the controller (51) has an emergency stop with the pilot valve (59), in particular a 3/2-way valve, connected to the control output (57) through which the emergency stop pilot valve (52) is driven.
  16. Device according to one of claims 1 to 15,
    characterized,
    in that the means (60) for blocking and / or the means (70) for venting and / or the means (80) for ventilation are contained in the housing (12) of the cylinder (11).
  17. Device according to one of claims 1 to 16,
    characterized,
    in that the housing (12) has a cylinder tube (13) which is tightly closed at both ends by means of cover parts (14, 15), the piston rod (27) being guided in and guided out of a cover part (15).
  18. Device according to claim 17,
    characterized,
    in that each cover part (14, 15) contains a pressure connection (35, 37) and inner channels (36, 38) connected to the pressure connection (35, 37) and to the means (60) and / or back ventilation (70) and / or ventilation (80) and contain these.
  19. Device according to one of Claims 16 to 18,
    characterized,
    in that the means for blocking (60) and for venting (70) a cover part (14) to those of the other cover part (15) via respective connecting lines, eg channels (65, 78) of a distributor plate (64) in communication.
  20. Device according to claim 19,
    characterized,
    in that the connecting lines are connected to an emergency stop pilot valve (59), in particular a 3/2 valve.
  21. Device according to one of claims 1 to 20,
    characterized,
    in that the openings of the means (80) for ventilation, which are open to the atmosphere in the cover parts (14, 15), each have a filter (83, 84) for preventing dirt suction.
EP06010906A 2006-05-27 2006-05-27 Control device for a double-acting pneumatic actuator Withdrawn EP1860328A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06010906A EP1860328A1 (en) 2006-05-27 2006-05-27 Control device for a double-acting pneumatic actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06010906A EP1860328A1 (en) 2006-05-27 2006-05-27 Control device for a double-acting pneumatic actuator

Publications (1)

Publication Number Publication Date
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EP06010906A Withdrawn EP1860328A1 (en) 2006-05-27 2006-05-27 Control device for a double-acting pneumatic actuator

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CN107654442A (en) * 2017-08-14 2018-02-02 芜湖慧盈自动化设备有限公司 A kind of cylinder assembly that gas can be transmitted on industrial robot end
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