EP0073182A2 - Sequential register for pressure fluid system - Google Patents
Sequential register for pressure fluid system Download PDFInfo
- Publication number
- EP0073182A2 EP0073182A2 EP82850169A EP82850169A EP0073182A2 EP 0073182 A2 EP0073182 A2 EP 0073182A2 EP 82850169 A EP82850169 A EP 82850169A EP 82850169 A EP82850169 A EP 82850169A EP 0073182 A2 EP0073182 A2 EP 0073182A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- valve
- order signal
- working procedure
- pressure fluid
- 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.)
- Granted
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Classifications
-
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C4/00—Circuit elements characterised by their special functions
Definitions
- the present invention relates to a sequential register for a pressure fluid system for supplying order signals for starting a number of working procedures, whereby one working procedure is started only when the next preceding working procedure has been finished.
- each working procedure is started by an order signal.
- a feed-back signal is obtained for initiating the next working procedure.
- each stage utilizes a valve and an and-element for activation of the valve when the next preceding stage delivers order signal and a feed-back signal is obtained. The valve is reset when the next proceeding stage delivers order signal.
- the present invention achieves the above mentioned function by using only one valve per stage. This is obtained by a sequential register according to the appended claim.
- each stage of the register is connected to the pressure fluid source. This means safe operation since the order signal for starting the working procedure does not have to pass through a number of register stages but is obtained directly from the pressure source.
- fig..1 shows a circuit diagram according to the invention.
- Fig. 2 shows a longitudinal section through a valve with the slide in a first position.
- Fig. 3 shows the valve with the slide in a second position.
- the shown sequential register comprises a number of stages of which three stages provided with valves 12, 13 and 14 are shown in fig. 1.
- the valves can be switched between a first position, shown for valve 12 and in fig. 2, and a second position, shown for valves 13 and 14 and in fig. 3.
- Each valve comprises a valve housing 1 provided with an end piece 2.
- a slide 5 is movable in the valve housing between a first position, fig. 2, and a second position fig. 3.
- Valve housing 1 is provided with a first inlet opening Y1 for connection to a pressure fluid source 11, normally the same pressure fluid source for all stages, a second inlet opening Y2 for receiving feed-back signal via conduit 16 when the working procedure relates to the valve has been finished, a first order signal opening Sl for delivering order signal via conduit 15 for starting the working procedure related to the valve, a second order signal opening S2 for delivering order signal via conduit 17 to a first control opening X1 in the next proceeding stage for activation of that stage, an outlet opening P for connection to a low pressure, atmospheric pressure if the fluid is air, a first control opening X1 for supply of control fluid from the second order signal opening S2 in the next preceding stage for switching slide 5 from the second position, fig.
- Slide 5 is provided with five seals 6, 7, 8, 9 and 10.
- the first seal 6 separates the first control opening X1 from the other openings.
- the fifth seal 10 separates the second control opening X2 from the other openings.
- the second seal 7 separates in the first valve position openings Y1 and 51 from outlet opening P and in the second valve position opening Y1 from opening Sl.
- the third seal 8 separates in the first valve position openings Y2 and S2 from outlet opening P and allows in the second valve position fluid to flow from openings S1 and S2 to outlet opening P.
- the fourth seal 9 has in the first valve position no function.
- In the second valve position seal 9 separates opening Y2 from opening S2.
- Seals 9 and 10 can be replaced by one considerably wider seal. However, this would be more expensive.
- the valves are furthermore provided with axial openings 3 and 4. Opening 4 can be used to put the slide in the position according to fig. 3 before starting the first working procedure. The first working procedure can then be started by supply of pressure fluid to opening 3 in the first valve of the sequential register. The same function can also be obtained through suitable pressurization of control
- Openings X2 and Xl whereby openings 3 and 4 are sealed against the surrounding atmosphere. Openings 3 and 4 can also be used for putting in pins to indicate the position of slide 5 and/or to manually move the slide.
- Valve 12 is in the first position as shown in fig. 1.
- the corresponding working procedure has been started by order signal from opening S1 via conduit 15.
- feed-back signal is obtained via conduit 16 to opening Y2.
- This signal is further conducted through valve 12 to its opening S2 and further via conduit 17 to opening X1 in valve 13.
- Valve 13 is switched to the first position.
- pressure fluid is conducted from the pressure fluid source 11 to opening Y1 in valve 13 and through this to opening S1, whereby the next working procedure is started via conduit 18.
- This signal is also conducted via conduit 19 to opening X2 in valve 12 which as a result is switched to the second position.
- valve 12 As a result openings Sl and S2 in valve 12, and consequently conduits 15 and 17, are connected to a low pressure via outlet opening P. As a result opening Xl in valve 13 is unloaded whereby valve 13 is ready forreswitching when valve 14 is activated.
Abstract
Description
- The present invention relates to a sequential register for a pressure fluid system for supplying order signals for starting a number of working procedures, whereby one working procedure is started only when the next preceding working procedure has been finished.
- In systems of the above mentioned kind each working procedure is started by an order signal. When the working procedure has been finished a feed-back signal is obtained for initiating the next working procedure. In a prior art solution each stage utilizes a valve and an and-element for activation of the valve when the next preceding stage delivers order signal and a feed-back signal is obtained. The valve is reset when the next proceeding stage delivers order signal.
- The present invention achieves the above mentioned function by using only one valve per stage. This is obtained by a sequential register according to the appended claim.
- One important characteristic of the present invention is that each stage of the register is connected to the pressure fluid source. This means safe operation since the order signal for starting the working procedure does not have to pass through a number of register stages but is obtained directly from the pressure source.
- An embodiment of the invention is described below with reference to the accompanying drawings in which fig..1 shows a circuit diagram according to the invention. Fig. 2 shows a longitudinal section through a valve with the slide in a first position. Fig. 3 shows the valve with the slide in a second position.
- The shown sequential register comprises a number of stages of which three stages provided with
valves valve 12 and in fig. 2, and a second position, shown forvalves valve housing 1 provided with anend piece 2. Aslide 5 is movable in the valve housing between a first position, fig. 2, and a second position fig. 3. Valvehousing 1 is provided with a first inlet opening Y1 for connection to apressure fluid source 11, normally the same pressure fluid source for all stages, a second inlet opening Y2 for receiving feed-back signal viaconduit 16 when the working procedure relates to the valve has been finished, a first order signal opening Sl for delivering order signal viaconduit 15 for starting the working procedure related to the valve, a second order signal opening S2 for delivering order signal viaconduit 17 to a first control opening X1 in the next proceeding stage for activation of that stage, an outlet opening P for connection to a low pressure, atmospheric pressure if the fluid is air, a first control opening X1 for supply of control fluid from the second order signal opening S2 in the next preceding stage for switchingslide 5 from the second position, fig. 3, to the first position, fig. 2,and a second control opening X2 for supplying of control fluid from the first order signal opening Sl in the next proceeding stage viaconduit 19 for switching theslide 5 from the first position, fig. 2, to the second position, fig. 3.Slide 5 is provided with fiveseals first seal 6 separates the first control opening X1 from the other openings. Thefifth seal 10 separates the second control opening X2 from the other openings. Thesecond seal 7 separates in the first valve position openings Y1 and 51 from outlet opening P and in the second valve position opening Y1 from opening Sl. Thethird seal 8 separates in the first valve position openings Y2 and S2 from outlet opening P and allows in the second valve position fluid to flow from openings S1 and S2 to outlet opening P. Thefourth seal 9 has in the first valve position no function. In the secondvalve position seal 9 separates opening Y2 from opening S2.Seals axial openings Opening 4 can be used to put the slide in the position according to fig. 3 before starting the first working procedure. The first working procedure can then be started by supply of pressure fluid to opening 3 in the first valve of the sequential register. The same function can also be obtained through suitable pressurization of control - openings X2 and Xl, whereby
openings Openings slide 5 and/or to manually move the slide. - The sequential register shown works in the following way. Valve 12 is in the first position as shown in fig. 1. The corresponding working procedure has been started by order signal from opening S1 via
conduit 15. When this working procedure has been finished feed-back signal is obtained viaconduit 16 to opening Y2. This signal is further conducted throughvalve 12 to its opening S2 and further viaconduit 17 to opening X1 invalve 13. Valve 13 is switched to the first position. As a result pressure fluid is conducted from thepressure fluid source 11 to opening Y1 invalve 13 and through this to opening S1, whereby the next working procedure is started viaconduit 18. This signal is also conducted viaconduit 19 to opening X2 invalve 12 which as a result is switched to the second position. As a result openings Sl and S2 invalve 12, and consequently conduits 15 and 17, are connected to a low pressure via outlet opening P. As a result opening Xl invalve 13 is unloaded wherebyvalve 13 is ready forreswitching whenvalve 14 is activated.
Claims (1)
- A sequential register for a pressure fluid system comprising a number of stages for successive supply of order signals for starting a number of successive working procedures, whereby one working procedure is started only when the next preceding working procedure has been finished, characterized thereby that each stage comprises a valve being switchable between a first position and a second position, that said valve comprises a first inlet opening (Yl) for connection to a pressure fluid source, a second inlet opening (Y2) for receiving a feed-back signal when the working procedure corresponding to the valve has been finished, a first order signal opening (Sl) for delivering an order signal for starting the working procedure corresponding to the valve, a second order signal opening (S2) for delivering an order signal for activation of the next proceeding stage, an outlet opening (P) for connection to a low pressure, a first control opening (Xl) for switching the valve from said second position to said first position and a second control opening (X2) for switching the valve from said first position to said second position, that said first order signal opening (Sl) is connected with the second control opening (X2) in the next preceding stage and said second order signal opening (S2) is connected with the first control opening (Xl) in the next proceeding stage, whereby the valve in said first position connects the first inlet opening (Yl) with the first order signal opening (Sl) and the second inlet opening (Y2) with the second order signal opening (S2) and in said second position both order signal openings (Sl and S2) are connected with the outlet opening (P).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8104935A SE436514B (en) | 1981-08-20 | 1981-08-20 | STEP REGISTER FOR PRESSURE FLUID SYSTEM |
SE8104935 | 1981-08-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0073182A2 true EP0073182A2 (en) | 1983-03-02 |
EP0073182A3 EP0073182A3 (en) | 1983-08-10 |
EP0073182B1 EP0073182B1 (en) | 1985-07-03 |
Family
ID=20344393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82850169A Expired EP0073182B1 (en) | 1981-08-20 | 1982-08-13 | Sequential register for pressure fluid system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0073182B1 (en) |
DE (1) | DE3264560D1 (en) |
SE (1) | SE436514B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1237061A1 (en) * | 2001-03-02 | 2002-09-04 | Thomas Dipl-Ing. Schmidt | Method and device for remote control of a plurality of actuators |
JP2020125801A (en) * | 2019-02-04 | 2020-08-20 | 国立大学法人東京工業大学 | Fluid pressure control device, fluid pressure operation valve, movable body using the same, and carrier device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1564678A (en) * | 1968-02-16 | 1969-04-25 | ||
FR2059192A5 (en) * | 1969-08-26 | 1971-05-28 | Martonair Ltd | |
FR2348523A1 (en) * | 1976-04-16 | 1977-11-10 | Telemecanique Electrique | Pneumatic shift register sequence control - has threshold gate to ensure interlock signal line pressure is below given pressure |
FR2398203A1 (en) * | 1977-07-23 | 1979-02-16 | Festo Maschf Stoll G | PNEUMATIC LOGIC ELEMENT |
GB2042231A (en) * | 1979-02-14 | 1980-09-17 | Bosch Gmbh Robert | A fluidic pulse chain for interlocking successive steps in a sequence control |
-
1981
- 1981-08-20 SE SE8104935A patent/SE436514B/en unknown
-
1982
- 1982-08-13 DE DE8282850169T patent/DE3264560D1/en not_active Expired
- 1982-08-13 EP EP82850169A patent/EP0073182B1/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1564678A (en) * | 1968-02-16 | 1969-04-25 | ||
FR2059192A5 (en) * | 1969-08-26 | 1971-05-28 | Martonair Ltd | |
FR2348523A1 (en) * | 1976-04-16 | 1977-11-10 | Telemecanique Electrique | Pneumatic shift register sequence control - has threshold gate to ensure interlock signal line pressure is below given pressure |
FR2398203A1 (en) * | 1977-07-23 | 1979-02-16 | Festo Maschf Stoll G | PNEUMATIC LOGIC ELEMENT |
GB2042231A (en) * | 1979-02-14 | 1980-09-17 | Bosch Gmbh Robert | A fluidic pulse chain for interlocking successive steps in a sequence control |
Non-Patent Citations (2)
Title |
---|
FEINWERKTECHNIK & MESSTECHNIK, vol. 84, no. 3, April 1976, pages 128-135, M}nchen (DE); * |
FLUID POWER INTERNATIONAL, vol. 34, December 1969, pages 37-39, London (GB); * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1237061A1 (en) * | 2001-03-02 | 2002-09-04 | Thomas Dipl-Ing. Schmidt | Method and device for remote control of a plurality of actuators |
JP2020125801A (en) * | 2019-02-04 | 2020-08-20 | 国立大学法人東京工業大学 | Fluid pressure control device, fluid pressure operation valve, movable body using the same, and carrier device |
Also Published As
Publication number | Publication date |
---|---|
EP0073182B1 (en) | 1985-07-03 |
EP0073182A3 (en) | 1983-08-10 |
SE8104935L (en) | 1983-02-21 |
SE436514B (en) | 1984-12-17 |
DE3264560D1 (en) | 1985-08-08 |
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