EP0100249B1 - Elektropneumatische Einrichtung; verzögerter Gasimpulserzeuger - Google Patents

Elektropneumatische Einrichtung; verzögerter Gasimpulserzeuger Download PDF

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Publication number
EP0100249B1
EP0100249B1 EP83401133A EP83401133A EP0100249B1 EP 0100249 B1 EP0100249 B1 EP 0100249B1 EP 83401133 A EP83401133 A EP 83401133A EP 83401133 A EP83401133 A EP 83401133A EP 0100249 B1 EP0100249 B1 EP 0100249B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pneumatic
gas
negative
timer
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
EP83401133A
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English (en)
French (fr)
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EP0100249A1 (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 AT83401133T priority Critical patent/ATE19293T1/de
Publication of EP0100249A1 publication Critical patent/EP0100249A1/de
Application granted granted Critical
Publication of EP0100249B1 publication Critical patent/EP0100249B1/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
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/12—Fluid oscillators or pulse generators

Definitions

  • the invention relates to an electro-pneumatic device, generator of timed gas pulses.
  • electro-pneumatic or electronic devices to ensure repetitive operations for dosing liquid or pasty products, such as glues, resins, oils, greases, solvents, various reagents, or even pastes. to be welded or soldered. 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 solenoid valves ensuring the total flow of air pulses.
  • One of the aims of the invention is to provide for the elimination of these sources of problems, that is to say to obtain an electro-pneumatic device which is energy efficient and which does not heat the air of the successive pulses, will provide doses of product with better repeatability.
  • the subject of the invention is an electro-pneumatic device generating timed gas pulses, supplied by a source of gas at a determined pressure, characterized in that it comprises: a pneumatic circuit with three branches, comprising respectively a regulator, a vacuum generator and a solenoid valve, for applying respectively to a pneumatic memory cell, a pressure, a vacuum, and a gas pressure signal, for controlling the cell; and an electrical circuit comprising a timer and a maneuverable contact ensuring the supply of the solenoid valve via a diode bridge.
  • the pneumatic memory cell delivers at its output the pressure from the pressure reducer or the vacuum from the vacuum generator depending on whether the solenoid valve is supplied or not.
  • the timer has several time ranges and has a tachometer button to display the durations.
  • the electro-pneumatic device according to the invention is supplied with gas under pressure by an external source 14.
  • the output of the filter 1 feeds 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 bars, depending on the desired applications.
  • a pressure regulator 6, supplied by the filter 1, is preset to an adequate value allowing proper operation of a vacuum generator 9 via a miniature flow regulator 10.
  • the vacuum generator 9 operates correctly even under 0.5 bar.
  • This cell delivers a signal usable in 15, that is to say either a pressure or a depression.
  • the solenoid valve 7 When the solenoid valve 7 is closed, the output of the vacuum generator 9 is directly connected to the output 15 of use of the cell 8.
  • the vacuum prevents dripping.
  • an alternating current supply 22 supplies the primary of a transformer 20 by means of a fuse 23, under the control of a general switch 24, provided with an indicator light supplied by the secondary in "push" position, that is to say in the on position of the switch.
  • a switch 25 is provided in the secondary to select the operating mode: continuous or by cycle.
  • a timer 3 and an operable contact 19 each supply a diode bridge 18 in a phase. This diode bridge ensures the rectified current supply of the solenoid valve 7.
  • An indicator light 11 displays the supply of the solenoid valve 7.
  • the contact 19 is for example a pedal or hand contact, but it can accept any automated form of closure, such as a relay, proximity or limit switch, or the like.
  • Switch 25 is fitted with an indicator light supplied in the "push” position. In this position, the diode bridge 18 is supplied directly by the switch 25, the timer 3 being off: this is therefore the continuous operating mode. When the switch 25 is in the "pull" position, the diode bridge is powered by timer 3 and the switch LED is off: this is the cycle operating mode.
  • the timer has several time ranges 17. It can be constituted by a timed static switch whose time ranges extend from 60 ms to 160 ms for example. Its immunity to micro-cuts is greater than 20 ms and its electrical life is greater than 100 M cycles. This timer is equipped with a high-quality linear potentiometer 16 and a rev counter button 21 used for the arbitrary identification of the durations.
  • the diode bridge 18 supplies the solenoid valve 7 which is of very small dimensions and which consumes for example between 20 and 30 mA.
  • the timer 3 allows, by its button 21, to display the desired duration of the gas pressure signal intended for controlling the cell 8.
  • the cell 8 then switches to the active position and delivers to the output 15 the pressure established by the regulator 4 to control the application of the product.
  • the solenoid valve 7 is no longer supplied and the cell 8 switches back to its rest position, applying again to the output 15 the vacuum coming from the generator 9.
  • 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 to control 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 advantages provided by the device according to the invention are essentially linked to the very low consumption of the solenoid valve 7 which controls the pneumatic cell 8 and thus controls very large gas flow rates.
  • the device distributes products placed in containers connected to the outlet, with great flexibility of adjustment and great reliability.
  • the entire device can be housed in a box of approximately 2 dm 3 , which allows it to be inserted into automatic systems without posing any problem of space.
  • the power in cycle consumed by the solenoid valve 7 is less than 1 w.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Magnetically Actuated Valves (AREA)
  • Vacuum Packaging (AREA)
  • Catching Or Destruction (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Plasma Technology (AREA)

Claims (3)

1. Elektropneumatische Einrichtung als Erzeuger für verzögerte Gasimpulse, gespeist durch eine Quelle (14) für unter bestimmtem Druck stehendes Gas, dadurch gekennzeichnet, daß sie aus einem pneumatischen Kreis mit drei Zweigen besteht, die ein Druckminderventil (4) bzw. einen Unterdruckerzeuger (9) bzw. ein Magnetventil (7) enthalten, welche einer pneumatischen Speicherzelle (8) einen Druck bzw. einen Unterdruck bzw. ein Gasdrucksignal zum Steuern der Zelle (8) zuführen, und einem elektrischen Kreis mit einem Verzögerungsglied (3) und einem Schaltkontakt (19), der die Speisung des Magnetventils (7) über eine Diodenbrücke (18) herbeiführt.
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die pneumatische Speicherzelle (8) an ihrem Ausgang (15) den von dem Druckminderventil (4) herrührenden Druck oder den von dem Unterdruckerzeuger (9) herrührenden Unterdruck abgibt, je nachdem, ob das Magnetventil (7) gespeist wird oder nicht.
3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Verzögerungsglied (3) mehrere Zeitbereiche (17) besitzt und einen Drehzählerknopf (21) aufweist, um die Zeitdauern sichtbar zu machen.
EP83401133A 1982-06-04 1983-06-03 Elektropneumatische Einrichtung; verzögerter Gasimpulserzeuger Expired EP0100249B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401133T ATE19293T1 (de) 1982-06-04 1983-06-03 Elektropneumatische einrichtung; verzoegerter gasimpulserzeuger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8209727 1982-06-04
FR8209727A FR2528129A1 (fr) 1982-06-04 1982-06-04 Dispositif electro-pneumatique, generateur d'impulsions temporisees de gaz

Publications (2)

Publication Number Publication Date
EP0100249A1 EP0100249A1 (de) 1984-02-08
EP0100249B1 true EP0100249B1 (de) 1986-04-16

Family

ID=9274624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401133A Expired EP0100249B1 (de) 1982-06-04 1983-06-03 Elektropneumatische Einrichtung; verzögerter Gasimpulserzeuger

Country Status (4)

Country Link
EP (1) EP0100249B1 (de)
AT (1) ATE19293T1 (de)
DE (1) DE3363040D1 (de)
FR (1) FR2528129A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2553272B1 (es) * 2014-06-06 2016-09-20 Fundación Para La Promoción De La Innovación, Investigación Y Desarrollo Tecnológico En La Industria De Automoción De Galicia Generador programable de pulsos para ensayos neumáticos y eléctricos de fatiga
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365624A (en) * 1966-08-10 1968-01-23 Automatic Valve Corp Valve control system
DE2049309A1 (de) * 1970-10-07 1972-04-13 Knorr Bremse Gmbh Elektro fluidischer Impulsgeber
FR2513327A1 (fr) * 1981-09-23 1983-03-25 Cognard Pierre Dispositif entierement pneumatique, generateur d'impulsions temporisees de gaz

Also Published As

Publication number Publication date
EP0100249A1 (de) 1984-02-08
FR2528129B1 (de) 1985-03-29
FR2528129A1 (fr) 1983-12-09
DE3363040D1 (en) 1986-05-22
ATE19293T1 (de) 1986-05-15

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