EP0101573A1 - Mécanisme de commande pour dispositifs de manipulation - Google Patents

Mécanisme de commande pour dispositifs de manipulation Download PDF

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Publication number
EP0101573A1
EP0101573A1 EP83107357A EP83107357A EP0101573A1 EP 0101573 A1 EP0101573 A1 EP 0101573A1 EP 83107357 A EP83107357 A EP 83107357A EP 83107357 A EP83107357 A EP 83107357A EP 0101573 A1 EP0101573 A1 EP 0101573A1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
control
adjusting piston
compressed air
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
Application number
EP83107357A
Other languages
German (de)
English (en)
Other versions
EP0101573B1 (fr
Inventor
Josef Nutt
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.)
Wagner International AG
Original Assignee
Wagner International AG
J Wagner AG
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 Wagner International AG, J Wagner AG filed Critical Wagner International AG
Priority to AT83107357T priority Critical patent/ATE17390T1/de
Publication of EP0101573A1 publication Critical patent/EP0101573A1/fr
Application granted granted Critical
Publication of EP0101573B1 publication Critical patent/EP0101573B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area

Definitions

  • the invention relates to a drive device for a uniaxial handling device with an adjusting piston which can be acted upon on both sides by compressed air and which is displaceably inserted in a pressure cylinder, by means of which a height-adjustable tool, for example a spray gun, is directly connected via or via intermediate links.
  • the perpendicularly directed force caused by the mass of the tool should be without influence on the adjustment movements and thus be balanced.
  • this is achieved in that the two pressure chambers assigned to the adjusting piston are constantly pressurized with compressed air of different pressure to compensate for the weight force acting on them, that the two pressure chambers can be alternately vented via preferably adjustable throttles that can be connected by means of control valves, and that for accelerated outflow of the Compressed air from the pressure chamber vented when the tool is lifted is connected to a vent valve that is open for an adjustable period of time.
  • both pressure medium supply lines can also be provided with a pressure regulator, or the pressure line leading to the higher pressure chamber can be branched off between two pressure regulators so that the pressures required in each case can be set exactly.
  • branch lines which are adjustable by limit switches which can be actuated directly by the adjusting piston or via intermediate elements, such that the valve interacting with the limit switch assigned to the lower operating position of the workpiece lowers the pressure chamber Pressure associated vent valve and via the valve cooperating with the limit switch associated with the upper operating position of the workpiece, a changeover valve can be connected via the branch lines to the pressure medium supply line of low pressure or can be switched over by the pressure prevailing in the latter.
  • a switching valve to the low-pressure pressure line, which is connected via control lines to the changeover valve and an OR valve, that the changeover valve is connected via control lines to the control valves assigned to the pressure chambers of the pressure cylinder and through the OR -Valve and control valve supplied to the pressure switch associated with the lower pressure limit switch cooperating control pulses is switchable. This ensures that an upward stroke is always carried out when the drive device is started up.
  • the opening time of the vent valve can be set in a simple manner by means of a control cam which interacts with the adjusting piston, by means of a time switch relay or the like. It is also appropriate to arrange the height of the limit switches to adjust the adjusting path of the adjusting piston.
  • the drive device designed according to the invention is not only economical to manufacture without great construction costs, since commercially available components can be used to a large extent, but it also enables the function of a tool, the height of which can be changed by means of an adjusting piston, to be very cheap influence. If the two pressure chambers of the pressure cylinder are constantly pressurized with pressure medium of different pressure, the weight force acting on the adjusting piston is balanced and the adjusting movements are carried out only by venting one or the other pressure chamber. And if a vent valve that can be opened for a certain period of time is connected to the pressure chamber vented when the workpiece is lifted, the compressed air can flow out of this pressure chamber quickly.
  • the adjusting piston can thus be accelerated to the preselected adjusting speed in a short time, since the counterforce is low when the vent valve is open.
  • the additional outflow of air ensures that the force required to accelerate the mass and to overcome gravity is reached in a short time due to the pressure difference in the two pressure chambers.
  • the deceleration and fogging characteristics are therefore almost the same for the upper and lower reversal point, so that the tool can be used over a large adjustment range of the adjustment piston under constant conditions.
  • the adjustment speeds to z. B. apply a layer of varnish of different thickness to a workpiece without difficulty adaptable to the respective conditions.
  • the drive device shown in FIGS. 1 and 2 and designated 11 is assigned to a handling device 1 which has a pressure cylinder 2, an adjusting piston 3 slidably inserted therein and a schematically illustrated workpiece 4, e.g. B. has a paint spray gun.
  • the pressure chambers 5 and 6 of the pneumatic pressure cylinder 2 are connected to a pressure medium source 12 via pressure medium supply lines 13 and 14, so that a pressure medium pressure can be built up in this.
  • the weight of the horizontally adjustable workpiece 4, which is indicated by the arrow 8, is balanced in the drive device 11, the adjusting piston 3 is thus clamped by different pressures prevailing in the pressure chambers 5 and 6, and its adjustment movement is only achieved by venting the pressure chambers 5 or 6 accomplished.
  • a pressure regulator 16 is inserted into the pressure medium supply line 14 after the pressure medium supply line 13 has branched off, by means of which the pressure can be reduced.
  • the upstream pressure regulator 15 only serves to eliminate pressure fluctuations in the pressure medium flowing in from the pressure source 12.
  • Valves 18 and 20 are inserted into the pressure medium supply lines 13 and 14, via which the pressure chambers 5 and 6 are to be connected to the atmosphere via adjustable throttles 19 and 21. Furthermore, a switching valve 17 is connected to the pressure medium supply line 14 and is connected via control lines 29 and 3o to an OR valve 28 and a changeover valve 27 which can also be influenced by this.
  • the height-adjustable limit switches 23 and 25 are provided by the adjustment piston 3 via a control cam 7 which is attached to the control cam 7 and can thus be actuated by the valves 24 and 26 depending on the operating position of the adjustment piston 3.
  • the valves 24 and 26 are connected via branch lines 33 and 34 to the pressure medium supply line 14 and via control lines 35 and 36 to the vent valve 22 and the changeover valve 27, respectively, so that switching pulses are supplied to them in a specific operating position of the valves 24 and 26 can be.
  • the vent valve 22 is connected directly to the valve 2o, so that the pressure chamber 6 in one of the two operating positions of the valve 2o can also be vented quickly via the throttle 21 and also via the vent valve 22.
  • the valves 18 and 2o receive the switching pulses via control lines 31 and 32 from the changeover valve 27, which is also connected to the OR valve 28 via a control line 37.
  • a control pulse from the control line 35 can also be fed to the latter via a further control line 38.
  • both pressure chambers 5 and 6 are under pressure.
  • the pressure in the pressure chamber 6 is reduced by means of the pressure regulator 16 and is therefore smaller than the pressure prevailing in the pressure chamber 5, in such a way that the weight 8 of the tool 4 is kept in balance due to the differential pressure.
  • the adjusting piston 3 can only be adjusted upwards.
  • the switching valve 17 brought into the position shown in Fig. 2.
  • the valve 26 is adjusted so that the changeover valve 27 receives a control pulse via the branch line 34 and the control line 36.
  • the control line 31 is connected to the control line 30 connected to the pressure medium supply line 14, the valve 18 is also adjusted as a result thereof, so that the pressure chamber 5 is thus vented via the throttle 19.
  • the adjusting movement of the adjusting piston 3 is automatically reversed in this way.
  • the rate of descent is adjustable by means of the throttle 19.
  • the adjusting movements of the adjusting piston can be interrupted at any time by actuating the switching valve 17, but when starting up again an upward movement is always carried out again.
  • the branch line 33 connected to the pressure medium supply line 14 is connected to the control line 35 via the valve 24, the vent valve 23 thus receives a control pulse.
  • the OR valve 28 is also influenced and controlled via the control line 38 switched so that the control valve 27 is actuated via the control line 37.
  • the control line 32 is connected to the pressure medium supply line 14 via the control line 3o, the valve 2o is switched over and the pressure chamber 6 is thus additionally vented.
  • the venting takes place very quickly, namely the vent valve 22 is opened as long as the valve 24 via the limit switch 23 and by the control cam 7 or an equivalent means remains actuated. If the limit switch 23 assumes the position shown in FIG. 1, the valve 24 and also the vent valve 22 connected to it drop off immediately, the pressure medium located in the pressure chamber 6 can then only be delayed via the throttle 21 flow out, with which the adjustment speed can be adjusted.
  • the adjusting piston 3 can thus be quickly accelerated over a short distance to the predetermined adjusting speed by additionally reducing the pressure prevailing in the pressure chamber 6 for an adjustable period of time.
  • the acceleration and deceleration characteristics can therefore be made the same in the upper and lower reversal point, since the force required to accelerate the workpiece 4 and to overcome gravity is achieved in a short time due to the additional outflow of air from the pressure chamber 6.
  • the reversing valve 27 is always brought into such a switching position by means of the OR valve 28 that only a vertical movement of the workpiece 4 can be carried out when starting up again, a high level of operational reliability is also provided.

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Nozzles (AREA)
EP83107357A 1982-08-21 1983-07-27 Mécanisme de commande pour dispositifs de manipulation Expired EP0101573B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107357T ATE17390T1 (de) 1982-08-21 1983-07-27 Antriebseinrichtung fuer handhabungsgeraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3231209 1982-08-21
DE19823231209 DE3231209A1 (de) 1982-08-21 1982-08-21 Antriebseinrichtung fuer handhabungsgeraete

Publications (2)

Publication Number Publication Date
EP0101573A1 true EP0101573A1 (fr) 1984-02-29
EP0101573B1 EP0101573B1 (fr) 1986-01-08

Family

ID=6171446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107357A Expired EP0101573B1 (fr) 1982-08-21 1983-07-27 Mécanisme de commande pour dispositifs de manipulation

Country Status (3)

Country Link
EP (1) EP0101573B1 (fr)
AT (1) ATE17390T1 (fr)
DE (1) DE3231209A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6205336B1 (en) 1998-08-14 2001-03-20 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for improving network resource utilization in a cellular communication system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG11201600850XA (en) * 2013-08-21 2016-03-30 Daewoo Shipbuilding & Marine Pneumatic pressure device for laying power lines and method for controlling same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH369637A (de) * 1957-04-27 1963-05-31 Klopp Friedrich Hydraulischer Antrieb für geradlinig hin und her gehende Teile von Arbeitsmaschinen, insbesondere Werkzeugmaschinen
AT305472B (de) * 1969-06-06 1973-02-26 Erich Henke Hubvorrichtung, insbesondere für Farbspritzanlagen
US3850082A (en) * 1971-11-30 1974-11-26 Adeola Ag Fluid flow control elements
DE2843543A1 (de) * 1978-10-05 1980-04-10 Siemens Ag Anordnung zur regelung der geschwindigkeit eines pneumatischen zylinders und zur differenzdruckabhaengigen steuerung der aufsetzkraft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH369637A (de) * 1957-04-27 1963-05-31 Klopp Friedrich Hydraulischer Antrieb für geradlinig hin und her gehende Teile von Arbeitsmaschinen, insbesondere Werkzeugmaschinen
AT305472B (de) * 1969-06-06 1973-02-26 Erich Henke Hubvorrichtung, insbesondere für Farbspritzanlagen
US3850082A (en) * 1971-11-30 1974-11-26 Adeola Ag Fluid flow control elements
DE2843543A1 (de) * 1978-10-05 1980-04-10 Siemens Ag Anordnung zur regelung der geschwindigkeit eines pneumatischen zylinders und zur differenzdruckabhaengigen steuerung der aufsetzkraft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6205336B1 (en) 1998-08-14 2001-03-20 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for improving network resource utilization in a cellular communication system

Also Published As

Publication number Publication date
EP0101573B1 (fr) 1986-01-08
ATE17390T1 (de) 1986-01-15
DE3231209A1 (de) 1984-02-23

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