EP0215195B1 - Dispositif de propulsion hydraulique pour navette - Google Patents

Dispositif de propulsion hydraulique pour navette Download PDF

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Publication number
EP0215195B1
EP0215195B1 EP86107238A EP86107238A EP0215195B1 EP 0215195 B1 EP0215195 B1 EP 0215195B1 EP 86107238 A EP86107238 A EP 86107238A EP 86107238 A EP86107238 A EP 86107238A EP 0215195 B1 EP0215195 B1 EP 0215195B1
Authority
EP
European Patent Office
Prior art keywords
control valve
piston
piston rod
cylinder
valve
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
EP86107238A
Other languages
German (de)
English (en)
Other versions
EP0215195A1 (fr
Inventor
Axel Hundertmark
Dieter Hambrock
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.)
Emil Jager & Co KG GmbH
Original Assignee
Emil Jager & Co KG 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 Emil Jager & Co KG GmbH filed Critical Emil Jager & Co KG GmbH
Publication of EP0215195A1 publication Critical patent/EP0215195A1/fr
Application granted granted Critical
Publication of EP0215195B1 publication Critical patent/EP0215195B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/24—Mechanisms for inserting shuttle in shed
    • D03D49/42—Mechanisms for inserting shuttle in shed whereby the shuttle is propelled by liquid or gas pressure

Definitions

  • the invention relates to a hydraulically operated drive device for shooters according to the preamble of the main claim.
  • EP-PS 54 844 describes a hydraulically operated drive device for weaving shooters, in which the piston rod intended for the shooter tee is brought into different positions, namely an inner end position or riser position and an extended end position, via a control block with control valves connected to the hydraulic cylinder and positions between the end position or the beginning of the acceptance position and the end of the braking between these end positions.
  • EP-A-0 152 937 [state of the art according to Art. 54 (3) EPC] also describes a hydraulically operated drive device for shooters, in which the positioning of the actual piston in its desired starting position is further improved by a connecting line leads to the tank via a positioning valve and, on the other hand, connects to the hydraulic cylinder with the interposition of a positioning cylinder, a piston being guided in the positioning cylinder, the piston rod of which is directed towards the piston of the hydraulic cylinder.
  • the piston rod is positioned much more precisely, in particular from the end of the braking position to the knock-off position.
  • the invention has for its object to improve the device described in the earlier European patent application EP-A-0 152 937 in such a way that the impact speed can be increased while maintaining the advantages of the device described above.
  • 1 denotes a hydraulic cylinder which contains a piston 5 with a piston rod 2.
  • the rodless side of the hydraulic cylinder 1 is denoted by A
  • the side of the hydraulic cylinder 1 having the piston rod 2 is denoted by B.
  • a control block not shown in the drawing, connects to this hydraulic cylinder 1 via the control lines.
  • a pressure medium supply line P leads from a pressure accumulator 11 with the interposition of a control valve PA to the rodless cylinder space of the cylinder 1.
  • the cylinder space B has a pressure medium feed line P, and connects a tank 10 with the interposition of the line 10, a control valve BT and a control valve TA.
  • the tank 10 is low compared to the entire hydraulic system and a vent valve EL is connected to the line 10.
  • the cylinder space A connects to the tank T via a line VLA with the interposition of the control valve TA and line 10.
  • a pressure medium line P 2 leads from the pressure medium line P with the interposition of the line VLA and the control valve TA and a shuttle valve WV to a positioning cylinder 6.
  • control valves PA and TA are connected to one another via the connecting line VLA, which also connects to the cylinder space A.
  • the positioning cylinder 6 connects, in which a piston 7 is guided, which can rest against the piston 5 of the hydraulic cylinder 1 with a piston rod 8.
  • the piston rod side of the piston 7 is acted upon by a compression spring 12.
  • the positioning cylinder 6 can be made smaller than the hydraulic cylinder 1.
  • the movement of the piston 7 in the direction of the hydraulic cylinder 1 is limited by a stop 9, which additionally ensures a certain position of the piston 7 and thus the piston rod 8 with the interposition of the compression spring 12.
  • the control valves PA, BT and TA are designed as hydraulic poppet valves, for example the illustration in FIG. 1 shows that the control valve PA for the line P is closed and the control valves BT and TA for the lines P and VLA are open.
  • the control valves can be controlled electrically or hydraulically.
  • Fig. 1 shows the basic position, ie the control valve PA is closed and thus closed with respect to the pressure accumulator, the control valve BT is open, as is the control valve TA.
  • the weave zen W rests on the striking side of the piston rod 2 and, like the piston rod 2, is in the position X.
  • the piston 7 is in a rest position and the piston rod 8 is not in contact with the piston 5.
  • control valve TA by closing the control valve TA, pressure medium was fed via the pressure medium supply line P 2 and the shuttle valve WV to the positioning cylinder 6 and the piston rod 8 was brought into contact with the piston 5.
  • the control valve PA is still closed and the control valve BT is open.
  • Fig. 3 shows the striking position.
  • the control valve PA has opened and thus created a connection between the pressure accumulator 11 and the cylinder space A.
  • the piston 5 has moved from the position X to the position S and the oil displaced in the cylinder space B can flow to the tank via the open control valve BT and the control valve TA, which acts as a flow valve in this position, the vent valve EL opening as soon as a suction of Air through the oil flowing in line 10 to the tank is required.
  • the positioning cylinder 6 is in the position according to FIG. 2, in which the compression spring 12 is compressed.
  • the piston 5 is moved into the acceptance position X by the control valve BT being closed and pressure continuing to act on the piston 7 via the line P 2 , so that the piston rod 8 continues to hold its position.
  • the shuttle valve WV has switched to the other position.
  • pressure is added via line P into cylinder space B.
  • the oil displaced from cylinder space A flows via line VLA and valve TA as well as line 10 to the tank, and here, too, the vent valve EL causes line 10 to be vented, see above that a quick drain of the oil is guaranteed.
  • the control valve BT has changed so that the cylinder 6 is no longer pressurized, but is opened by switching the shuttle valve WV, so that the compression spring 12 can guide the piston 7 into the end position shown in FIG. 5.
  • the weaver W has returned the piston 5 or the piston rod 2 from the position X to the position Y and the oil displaced from the cylinder space A can flow the control valve TA to the tank 10 via the line VLA.
  • control valve TA has closed again and pressure medium can act on the piston 7 and thereby guides the piston rod 2 from the Y position to the X position, i.e. the tee or basic position.
  • a shut-off valve 14 is switched into the pressure medium line P 2 , which prevents pressure from being added to the cylinder 6, but the control valve BT has closed, so that pressure medium is now led via the pressure medium line P, to the cylinder space B, and thus the piston 5 in an end position and the piston rod 2 in the position Z, in which a so-called riser box change can be carried out, since the shooter W remains in the Y position.
  • shut-off valve 14 is now open and, at the same time, the control valve BT is open and the valve TA is open.
  • the pressure medium is fed via line P 2 to the positioning piston 7, which guides the piston 5 into the position X and thus also moves the contactor W into the striking position X.
  • the oil to be expelled in cylinder chamber B flows through the valve BT, TA to the tank.
  • the oil required in room A is displaced or taken out of the positioning cylinder.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (5)

1. Dispositif d'entraînement hydraulique pour navettes, comprenant, monté sur chacun des deux côtés du battant, un vérin hydraulique (1) à double effet, et comportant un piston (5) monté pour coulisser dans ce cylindre (1) et pour chacun, un bloc de distribution muni de distributeurs et relié au cylindre hydraulique (1), dans lequel
un distributeur (PA) est intercalé dans la conduite d'arrivée de fluide de pression (P) menant à la chambre de cylindre (A) qui ne contient pas de tige de piston,
un deuxième distributeur (TA) est disposé en amont d'une bâche (T), et
il est prévu un troisième distributeur (BT), auquel est raccordée la chambre de cylindre (B) du cylindre hydraulique (1) qui contient la tige de piston (2),

dans lequel, en outre, une conduite de liaison (VLA) relie les distributeurs (PA, TA), l'une à l'autre ainsi qu'à la chambre de cylindre (A) qui ne contient pas de tige de piston,
il est prévu un troisième conduite d'arrivée de fluide de pression (P2) qui se raccorde au côté sans tige de piston (A) du cylindre hydraulique (1), et
un cylindre de positionnement (6) se raccorde au cylindre hydraulique (1) et, dans ce cylindre de positionnement (6), est guidé un piston (7) dont la tige de piston (8) est dirigée vers le piston (5) du cylindre hydraulique (1 caractérisé en ce que, dans la conduite (10) interposée entre le distributeur (TA) et la bâche (T), est intercalée une valve de sortie d'air (EL), et la bâche (T) est placée en position basse par rapport à l'ensemble du système de conduites hydrauliques.
2. Dispositif selon la revendication 1, caractérisé en ce que la conduite de liaison (VLA) relie directement uniquement le distributeur (PA) au distributeur (TA) mais le distributeur (BT) est relié au distributeur (TA).
3. Dispositif selon la revendication 1 ou 2, caractérisé par un ressort de compression (12) placé dans le cylindre de positionnement (6) pour attaquer le côté du piston (7) qui porte la tige de piston.
4. Dispositif selon une des revendications précédentes, caractérisé en ce qu'une soupape d'arrêt (14) est intercalée dans la conduite de fluide de pression (P2) en amont du cylindre de positionnement (6).
5. Dispositif selon une des revendications précédentes, caractérisé en ce que le distributeur (BT) et le distributeur (TA) sont reliés l'un à l'autre par l'intermédiaire d'une conduite de liaison dans laquelle est intercalée une valve d'inversion (WV).
EP86107238A 1985-08-16 1986-05-28 Dispositif de propulsion hydraulique pour navette Expired EP0215195B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3529288A DE3529288C1 (de) 1985-08-16 1985-08-16 Hydraulisch betriebene Antriebseinrichtung fuer Webschuetzen
DE3529288 1985-08-16

Publications (2)

Publication Number Publication Date
EP0215195A1 EP0215195A1 (fr) 1987-03-25
EP0215195B1 true EP0215195B1 (fr) 1989-01-18

Family

ID=6278592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107238A Expired EP0215195B1 (fr) 1985-08-16 1986-05-28 Dispositif de propulsion hydraulique pour navette

Country Status (2)

Country Link
EP (1) EP0215195B1 (fr)
DE (2) DE3529288C1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101417C2 (de) * 1980-12-23 1984-03-08 Emil Jäger GmbH & Co KG, 4400 Münster "Hydraulisch betriebene Antriebseinrichtung für Webschützen"
EP0054844B1 (fr) * 1980-12-23 1984-06-06 Emil Jäger KG Dispositif hydraulique pour le lancement de navettes
DE3406137C1 (de) * 1984-02-21 1985-08-29 Emil Jäger GmbH & Co KG, 4400 Münster Hydraulisch betriebene Antriebseinrichtung fuer Webschuetzen

Also Published As

Publication number Publication date
EP0215195A1 (fr) 1987-03-25
DE3529288C1 (de) 1986-12-18
DE3661848D1 (en) 1989-02-23

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