EP0077699B1 - Völlig pneumatischer Generator für zeitgesteuerte Gasimpulse - Google Patents

Völlig pneumatischer Generator für zeitgesteuerte Gasimpulse Download PDF

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Publication number
EP0077699B1
EP0077699B1 EP82401726A EP82401726A EP0077699B1 EP 0077699 B1 EP0077699 B1 EP 0077699B1 EP 82401726 A EP82401726 A EP 82401726A EP 82401726 A EP82401726 A EP 82401726A EP 0077699 B1 EP0077699 B1 EP 0077699B1
Authority
EP
European Patent Office
Prior art keywords
gas
timer
supplied
controlled
cell
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.)
Expired
Application number
EP82401726A
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English (en)
French (fr)
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EP0077699A1 (de
Inventor
Pierre Cognard
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT82401726T priority Critical patent/ATE14917T1/de
Publication of EP0077699A1 publication Critical patent/EP0077699A1/de
Application granted granted Critical
Publication of EP0077699B1 publication Critical patent/EP0077699B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/22—Oscillators

Definitions

  • the invention relates to a fully pneumatic device, generator of timed gas pulses.
  • electro-pneumatic or electronic devices to carry out repetitive operations for dosing liquid or pasty products such as glues, resins, oils, greases, solvents, various reagents, or even pastes for solder or solder. These products must generally be delivered in a determined quantity from a tank.
  • applicators are used which, by means of a lever or a control pedal, ensure the metering while allowing the operator to have his hands free.
  • These devices generally use electricity. For certain specific situations, it may be necessary to avoid the use of electricity, as a safety measure.
  • the subject of the invention is a fully pneumatic device, generator of timed gas pulses, supplied by a gas source at a determined pressure, of the type comprising a regulator supplied with gas from the gas source, preset to an adequate value. and delivering a gas flow rate via a leakage pipe capable of being closed off by an operable control member, characterized in that it comprises: an amplifier relay supplied with gas from the gas source and controlled by the pressure of the gas coming from the regulator in the leakage pipe; an adjustable duration timer controlled by the amplifier relay; and a three-way cell controlled by the timer, supplied with gas from the gas source, and capable of delivering gas pulses whose duration is determined by the timer.
  • the pneumatic device according to the invention is supplied with gas under pressure by an external source 14.
  • a filter 1 to 5 or 20 microns for example, with incorporated regulator, delivers a fixed pressure comprised by example between 4 and 7 bar.
  • a miniature on-off valve 2 makes it possible to activate or deactivate the entire device.
  • the output of the filter 1 supplies a regulator 4 and a pressure gauge 5.
  • the regulator 4 is adjustable in the following ranges of values, for example: 0 to 1.3 bar, 0.1 to 4.5 bar, or 0 , 1 to 8 bar, depending on the desired applications.
  • a miniature pressure regulator 6 is preset to an adequate value allowing correct operation on the one hand of an amplifier relay 7 and on the other hand of a vacuum generator 9 via a miniature flow regulator 10.
  • the vacuum generator 9 operates correctly even under 0.5 bar.
  • the regulator 6 permanently supplies a leakage pipe 16, including a bypass piloting the amplifier relay 7, supplied by the valve 2.
  • This relay has a response time of 10 ms, and it supplies a pneumatic timer 3 delivering durations of 0 0.05 s over several minutes, gradually continuously, with good linearity up to several seconds.
  • Timer 3 controls a memory cell 3 with 3 channels, which is supplied with pressure by the regulator 4 and with depression by the depression generator 9. This cell delivers a signal usable at 15, that is to say either pressure, or depression. Furthermore, the timer 3 controls a pressure indicator 11, of the optical index type, having a response time of approximately 10 ms. On the leakage pipe 16, a cell 13 can be provided, controlled by the timer 3, and which ensures that the leakage pipe is shut off for the entire duration of the timeout imposed in 3, from a shutter fugitive from the leak line 16.
  • the leakage pipe 16 is closed at 12 by a maneuverable control, that is to say for example by a manual control, by a pedal, by a proximity sensor or by any other equivalent means.
  • the outlet of the vacuum generator 9 is directly connected to the outlet 15 for use of the cell 8.
  • the depression prevents dripping.
  • the timer 3 is provided with a maneuverable tachometer to display the desired duration of the gas pressure signal intended for controlling the cell 8.
  • the amplifier relay 7 applies to timer 3 the output pressure of the filter 1.
  • Timer 3 transmits this pressure to the optical pressure indicator 11 and to cell 8 for the preset duration displayed by the tachometer.
  • the cell 8 then switches to the active position and delivers at the outlet 15 the pressure established by the regulator 4 to control the application of the product.
  • the cell 8 switches back to its rest position, applying again to the output 15 the vacuum coming from the generator 9.
  • the device is brought back to the initial state and can again be put into operation.
  • the response time of the entire device is calculated in milliseconds; it is therefore of the same order of magnitude as that of a solenoid valve.
  • the device object of the invention is intended to deliver pulses of air or neutral gas such as nitrogen for example.
  • pulses of duration adjustable by the timer 3 act on a product dispenser constituted by syringes of various capacities, from 1 to 35 cm 3 for example, by cartridges from 75 to 360 cm 3 for example, or by tanks in metal or plastic.
  • the pulses can also be used for controlling pneumatic product valves, of the valve or diaphragm type for example. They can also, more generally, control any pneumatic system for a predetermined and repetitive time.
  • the device according to the invention has the qualities of existing devices using electronics. Since it does not use electric current, this device can be used in explosive atmospheres safely.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Vacuum Packaging (AREA)
  • Magnetically Actuated Valves (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Organic Insulating Materials (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Claims (6)

1. Vollständig pneumatische Vorrichtung zur Erzeugung von zeitverzögerten Gasstössen, wobei das Gas mit einem bestimmten Druck durch eine Gasversorgungseinheit (14) eingespeist wird, mit einem Druckregler (6), der von der Gasversorgungseinheit (14) her mit Gas versorgt wird, auf einen geeigneten Wert vorgeregelt ist und eine Gasströmung durch das Verbindungselement einer Ausströmleitungsanlage freigibt, die mittels eines betätigbaren Steuerelements abgedichtet werden kann, dadurch gekennzeichnet, dass die Vorrichtung einen Verstärker (7), der von der Gasversorgungseinheit (14) her mit Gas versorgt und durch den Gasdruck gesteuert wird, der durch den Druckregler (6) in der Ausströmleitungsanlage (16) eingestellt wird, eine Regelzeitvorgabeeinheit (3), die durch den Verstärker (7) gesteuert wird, und eine Dreiwegeschaltzelle (8) aufweist, die durch die Regelzeitvorgabeeinheit (3) gesteuert und von der Gasversorgungseinheit (14) her mit Gas versorgt wird und Gasstösse aussenden kann, deren Zeitdauer durch die Regelzeitvorgabeeinheit (3) bestimmt ist.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass stromab der Regelzeitvorgabeeinheit (3) eine optische Druckanzeigevorrichtung (11) angeordnet ist, um den Steuergasstrom der Dreiwegeschaltzelle (8) darzustellen.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie einen Unterdruckerzeuger (9) aufweist, um durch die Dreiwegeschaltzelle (8) einen Unterdruck während der Zeitperioden zu erzeugen, während denen die Steuergasströmung die Dreiwegeschaltzelle (8) beaufschlagt.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass stromab des Verstärkers (7) in der Ausströmleitungsanlage (16) eine Zelle (13) angeordnet ist, die durch die Regelzeitvorgabeeinheit (3) gesteuert wird, um die Steuerung des Verstärkers bei dem Signal einer unbeständigen Abdichtung der Ausströmleitungsanlage (16) sicherzustellen.
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Ausströmleitungsanlage (16) stromauf ihres Abzweigs zum Verstärker (3) mit einer Abdichtung (18) ausgerüstet ist, die durch ein Kapillarrohr (17) durchstossen wird, das sich über die Abzweigung hinaus erstreckt.
EP82401726A 1981-09-23 1982-09-23 Völlig pneumatischer Generator für zeitgesteuerte Gasimpulse Expired EP0077699B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401726T ATE14917T1 (de) 1981-09-23 1982-09-23 Voellig pneumatischer generator fuer zeitgesteuerte gasimpulse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8117919 1981-09-23
FR8117919A FR2513327A1 (fr) 1981-09-23 1981-09-23 Dispositif entierement pneumatique, generateur d'impulsions temporisees de gaz

Publications (2)

Publication Number Publication Date
EP0077699A1 EP0077699A1 (de) 1983-04-27
EP0077699B1 true EP0077699B1 (de) 1985-08-14

Family

ID=9262387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401726A Expired EP0077699B1 (de) 1981-09-23 1982-09-23 Völlig pneumatischer Generator für zeitgesteuerte Gasimpulse

Country Status (4)

Country Link
EP (1) EP0077699B1 (de)
AT (1) ATE14917T1 (de)
DE (1) DE3265436D1 (de)
FR (1) FR2513327A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528129A1 (fr) * 1982-06-04 1983-12-09 Cognard Pierre Dispositif electro-pneumatique, generateur d'impulsions temporisees de gaz
CN114893138B (zh) * 2022-05-10 2023-11-17 佰思迪(天津)科技有限公司 一种脉冲式负压吸附设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433617A (fr) * 1965-02-26 1966-04-01 Inst Werkzeugmaschinen Dispositif pour la commande sans contact pour la production d'impulsions pneumatiques
DE2504698A1 (de) * 1975-02-05 1976-08-19 Kuhnke Gmbh Kg H Vorrichtung zur erzeugung von druckluftstoessen in form von kurzimpulsen

Also Published As

Publication number Publication date
FR2513327B1 (de) 1985-04-19
DE3265436D1 (en) 1985-09-19
EP0077699A1 (de) 1983-04-27
FR2513327A1 (fr) 1983-03-25
ATE14917T1 (de) 1985-08-15

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