EP0054844A1 - Dispositif hydraulique pour le lancement de navettes - Google Patents

Dispositif hydraulique pour le lancement de navettes Download PDF

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Publication number
EP0054844A1
EP0054844A1 EP81110296A EP81110296A EP0054844A1 EP 0054844 A1 EP0054844 A1 EP 0054844A1 EP 81110296 A EP81110296 A EP 81110296A EP 81110296 A EP81110296 A EP 81110296A EP 0054844 A1 EP0054844 A1 EP 0054844A1
Authority
EP
European Patent Office
Prior art keywords
piston rod
hydraulic
cylinder
valves
control 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.)
Granted
Application number
EP81110296A
Other languages
German (de)
English (en)
Other versions
EP0054844B1 (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

  • the invention relates to a hydraulically operated drive means for shuttle with one disposed on each side of the sley hydraulic cylinder, in this slidable on g-e associated piston and a cylinder connected to the hydraulic control block.
  • the invention has for its object to provide a fully hydraulic drive and return device.
  • a hydraulically operated drive device for shooters as described in the claims in which the return of the piston rod in the actual hydraulic cylinder by the shooter - at least over part of the path length the same - is done itself, and it was surprisingly found that the dynamic pressure in the lines themselves is sufficient to bring about the required damping of the shooter and thus slow down the shooter.
  • the impingement of the shooter is provided to arrive in the shuttle box in a conventional manner with a corresponding wear-resistant material, said connecting part between the contactors and the shooter blow b e - din g organization is called a picker.
  • drop box systems multiple shooters are arranged above one another in a drop box and be placed according to the desired weave pattern and arranged in the protecting of thread before the shed, namely the fact that the one above the other in the drop box of g e-arranged protecting controlled accordingly lowered to the working position or be raised.
  • the problem here is that when the shooter strikes the picker, for example, it is either provided from the outset or, through use, a conical recess opening into the picker is provided, 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, by 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 shuttle shooter pushes the piston rod in the so-called acceptance position or the associated auxiliary tool back into the cylinder and the oil displaced by the piston in the hydraulic cylinder flows back via a line connection, which has been found to that the dynamic pressure in the lines is sufficient to brake and dampen the shooter sufficiently without having to open the valve connection to the tank.
  • the piston rod or the associated auxiliary means reaches the so-called "end of the brake position".
  • the piston rod is retracted further into the hydraulic cylinder, i.e. from the "extended piston rod end position" to an “inner end position”.
  • the rifle bar is independently moved back a short 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 designates a hydraulic clutch which contains a piston rod 2.
  • the rodless side of the hydrauLikzyLinder 1 is denoted by A
  • the side of the hydrauLik 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 1 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, which is switched between the cylinder space B and the tank.
  • the speed control valve GV 1 lies in the line P 1 , to which a line 3 connects, which opens into the cylinder space B and also has a branch line 4, which is connected to the control valve AB.
  • control valves AB, PA and TA are connected to one another via a connecting line VL, and a junction g VLA this Verbindun sLei- device VL is connected to the cylinder space A at the same time.
  • a further pressure medium supply line P 2 opens into the line VL and a speed control valve GV 2 is switched on.
  • the control valves AB, PA and TA are designed as hydraulic seat valves, for example the illustration in FIG. 1 showing that the control valve TA is closed, the control valve PA is open and the control valve AB is open.
  • Fig. 1 shows the stroke 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 lines 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, i.e. the shooters in the riser can be moved up and down without any contact with the picker or the like.
  • Fig. 5 shows that there is no pressure on the lines P 1 , P and P 2 , that the control valve PA is closed, so that the piston rod by the returning shooter from position X (Fig. 4) to 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 1 , 4 and 3 into cylinder 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 enables any choice and sequence of the individual shooters in the bilateral risers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Actuator (AREA)
  • Looms (AREA)
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 true EP0054844A1 (fr) 1982-06-30
EP0054844B1 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)

Cited By (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

Citations (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
FR2368562A1 (fr) * 1976-10-20 1978-05-19 Crompton & Knowles Corp Mecanisme pneumatique de chasse pour metier a tisser

Patent Citations (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
FR2368562A1 (fr) * 1976-10-20 1978-05-19 Crompton & Knowles Corp Mecanisme pneumatique de chasse pour metier a tisser

Cited By (5)

* 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
EP0152937A3 (en) * 1984-02-21 1985-09-25 Emil Jager Gmbh & Co. Kg Hydraulic drive element for weaving shuttles
DE3529288C1 (de) * 1985-08-16 1986-12-18 Emil Jäger GmbH & Co KG, 4400 Münster Hydraulisch betriebene Antriebseinrichtung fuer Webschuetzen
EP0215195A1 (fr) * 1985-08-16 1987-03-25 Emil Jäger GmbH & Co. KG Dispositif de propulsion hydraulique pour navette
US5027865A (en) * 1989-06-07 1991-07-02 Norlin Goeran Controllable hydraulic picking device

Also Published As

Publication number Publication date
EP0054844B1 (fr) 1984-06-06
DE3164012D1 (en) 1984-07-12

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