EP0054844B1 - Dispositif hydraulique pour le lancement de navettes - Google Patents

Dispositif hydraulique pour le lancement de navettes Download PDF

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Publication number
EP0054844B1
EP0054844B1 EP81110296A EP81110296A EP0054844B1 EP 0054844 B1 EP0054844 B1 EP 0054844B1 EP 81110296 A EP81110296 A EP 81110296A EP 81110296 A EP81110296 A EP 81110296A EP 0054844 B1 EP0054844 B1 EP 0054844B1
Authority
EP
European Patent Office
Prior art keywords
piston rod
hydraulic cylinder
control valve
shooter
line
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
EP81110296A
Other languages
German (de)
English (en)
Other versions
EP0054844A1 (fr
Inventor
Axel Hundertmark
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 KG
Original Assignee
Emil Jager KG
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
Priority claimed from DE19813125820 external-priority patent/DE3125820A1/de
Application filed by Emil Jager KG filed Critical Emil Jager KG
Priority to AT81110296T priority Critical patent/ATE7803T1/de
Publication of EP0054844A1 publication Critical patent/EP0054844A1/fr
Application granted granted Critical
Publication of EP0054844B1 publication Critical patent/EP0054844B1/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

  • a hydraulically operated drive device for weaving shooters in which the return of the piston rod in the actual hydraulic cylinder by the weaving gun - at least over part of the path length of the same - takes place itself, whereby it was surprisingly found that the dynamic pressure in the lines itself is sufficient to bring about the required damping of the shooter and thus slow down the shooter.
  • the point of contact of the shooter when entering the rifle box is equipped in a manner known per se with a corresponding wear-resistant material, this connecting part between the shooter and the device causing the rifle strike being referred to as a picker.
  • riser systems In so-called riser systems, several shooters are arranged one above the other in a riser box and, depending on the desired weaving pattern and the type of thread arranged in the shooter, are placed in front of the shed, in that the shooters arranged one above the other in the riser box are lowered or raised accordingly in the working position.
  • the problem here is that when the shooter strikes the picker, for example, it is either provided from the outset or, through use, a cone-shaped, outwardly opening depression is formed in the picker, into which the shooter tip enters. If the shooters are now to perform a vertical movement, this depth of penetration of the shooter in the picker prevents this upward and downward movement of the shooters and it must therefore be ensured that the striking organ, for example the picker then coming into contact with the shooter, is around one further path is back, which ensures that the rifle tip is released.
  • the device according to the main claim is supplemented by a third pressure medium line provided with a speed control valve, which connects to the rodless side of the hydraulic cylinder.
  • the retracted weaver pushes the piston rod, which is in the so-called acceptance position, or the additional aids connected with it back into the cylinder and the oil displaced by the piston in the hydraulic cylinder flows back via a line connection, whereby it has been found that that the dynamic pressure in the lines is sufficient to brake and dampen the shooter sufficiently without it being necessary to open the valve connection to the tank.
  • the shooter hits the piston rod and the associated aids in the so-called »end of braking position «.
  • the piston rod is retracted further into the hydraulic cylinder, i. H. from the position "extended end position of the piston rod” to an “inner end position”.
  • the piston rod is independently moved back a small way by the shooter, so that the shooter tip is not obstructed by the pick opening or what other weaving aids are available here, so that the up and down movement of the shooters in the riser is easy can.
  • 1 denotes a hydraulic cylinder which contains a piston rod 2.
  • the rodless side of the hydraulic cylinder 1 is denoted by A
  • the side of the hydraulic cylinder having the piston rod 2 is denoted by B.
  • Connected to this hydraulic cylinder 1 is a control block, which has a pressure medium supply line P i with a speed control valve GV 1 , a control valve PA controlling the pressure medium supply line, the pressure line being designated P, a control valve TA controlling the backflow into a tank T and finally a control valve AB that between the cylinder space B and the tank is switched on.
  • a further pressure medium supply line P 2 opens into the line VL, into which a speed control valve GV 2 is switched on.
  • the control valves AB, PA and TA are designed as hydraulic seat valves, the illustration in FIG. 1, for example, showing that the control valve TA is closed, the control valve PA is open and the control valve AB is open.
  • the control valves can be electrically controlled.
  • Fig. 1 shows the blow position, in which the control valve PA is open so that oil can flow from the pressure medium supply line P into the cylinder space A.
  • the control valve AB is open, so that there is the possibility that the oil displaced from the cylinder space B can flow back to the cylinder space A via the line 3, 4 and the connecting line VL.
  • a backflow into the tank is excluded in that the control valve TA is closed.
  • the so-called riser box change can now take place. H. the shooters in the riser can be moved up and down without any contact with the picker or the like.
  • line P 2 is pressurized with the speed control valve GV 2 arranged in it (Fig. 4), as the arrow in Fig. 4 shows, and now the piston rod from position Z to the position X moves.
  • Fig. Shows that there is no pressure on the lines P i , P and P 2 , that the control valve PA is closed, so that the piston rod by the returning shooter from the position X (Fig. 4) to the position Y (Fig. 5) has been carried out, the piston has been pressed back into the cylinder and part of the oil flowing back can now flow back via line VL, 4 and 3 into cylinder chamber B and into tank T.
  • the resulting dynamic pressure in the lines is sufficient to dampen the shooter and, as already explained above, the shooter returns the piston rod from position X to position Y, is braked and stands still in position Y (Fig. 5 ).
  • control according to the invention thus allows any choice and sequence of the individual shooters in the bilateral risers.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Actuator (AREA)
  • Looms (AREA)

Claims (5)

1. Dispositif d'entraînement à action hydraulique pour navettes de tissage, avec un vérin hydraulique disposé de chaque côté du battant, avec un piston disposé d'une manière mobile dans le vérin hydraulique et un bloc de commande, avec vannes de commande, relié à chaque vérin hydraulique, caractérisé en ce que chaque vérin hydraulique (1) est construit à double effet, et que sont prévues trois vannes de commande, dont l'une (PA) se trouve dans la conduite (P) amenant le fluide sous pression à l'espace du vérin ne contenant pas la tige de piston , la seconde (TA) est disposée en amont de la cuve de reflux (T), et la troisième (AB) se raccorde au côté (B), contenant la tige de piston, du vérin hydraulique (1), une conduite de liaison (VL) reliant les trois vannes les unes aux autres et à l'espace du vérin ne contenant pas la tige de piston.
2. Dispositif selon la revendication 1, caractérisé en ce qu'elle contient une vanne de régulation de vitesse supplémentaire (GVI) dans une deuxième conduite d'amenée du fluide sous pression (Pi).
3. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les vannes de commande sont commandées électriquement.
4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il contient en tant que vannes de commande des vannes hydrauliques à siège.
5. Dispositif selon au moins la revendication 1, caractérisé en ce qu'il contient une troisième conduite d'amenée du fluide sous pression (P2), équipée d'une vanne de régulation de vitesse (GV2), et qui se raccorde au côté (A), ne contenant pas la tige de piston, du vérin hydraulique (1 ).
EP81110296A 1980-12-23 1981-12-10 Dispositif hydraulique pour le lancement de navettes Expired EP0054844B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81110296T ATE7803T1 (de) 1980-12-23 1981-12-10 Hydraulisch betriebene antriebseinrichtung fuer webschuetzen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3048760 1980-12-23
DE3048760 1980-12-23
DE19813125820 DE3125820A1 (de) 1981-07-01 1981-07-01 Hydraulisch betriebene antriebseinrichtung fuer webschuetzen
DE3125820 1981-07-01

Publications (2)

Publication Number Publication Date
EP0054844A1 EP0054844A1 (fr) 1982-06-30
EP0054844B1 true EP0054844B1 (fr) 1984-06-06

Family

ID=25789993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110296A Expired EP0054844B1 (fr) 1980-12-23 1981-12-10 Dispositif hydraulique pour le lancement de navettes

Country Status (2)

Country Link
EP (1) EP0054844B1 (fr)
DE (1) DE3164012D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406137C1 (de) * 1984-02-21 1985-08-29 Emil Jäger GmbH & Co KG, 4400 Münster Hydraulisch betriebene Antriebseinrichtung fuer Webschuetzen
DE3529288C1 (de) * 1985-08-16 1986-12-18 Emil Jäger GmbH & Co KG, 4400 Münster Hydraulisch betriebene Antriebseinrichtung fuer Webschuetzen
US5027865A (en) * 1989-06-07 1991-07-02 Norlin Goeran Controllable hydraulic picking device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE551722A (fr) *
DE806658C (de) * 1949-01-01 1951-06-18 Thomas Hindle Schuetzentreibervorrichtung fuer Webstuehle
FR1333104A (fr) * 1958-05-03 1963-07-26 Procédé et dispositif pour lancer et recevoir périodiquement des objets, en particulier par des moyens hydrauliques ou pneumatiques
FR1402075A (fr) * 1964-04-29 1965-06-11 Rech Etudes Prod Dispositif hydraulique de freinage et de lancement de la navette de métier à tisser
US4082118A (en) * 1976-10-20 1978-04-04 Crompton & Knowles Corporation Pneumatic picking mechanism for looms

Also Published As

Publication number Publication date
EP0054844A1 (fr) 1982-06-30
DE3164012D1 (en) 1984-07-12

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