EP0916757B1 - Vorrichtung zum Einstellen des Gelenkkopfs der Antriebsverbindung für die Schäfte von Webmaschinen - Google Patents

Vorrichtung zum Einstellen des Gelenkkopfs der Antriebsverbindung für die Schäfte von Webmaschinen Download PDF

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Publication number
EP0916757B1
EP0916757B1 EP98120891A EP98120891A EP0916757B1 EP 0916757 B1 EP0916757 B1 EP 0916757B1 EP 98120891 A EP98120891 A EP 98120891A EP 98120891 A EP98120891 A EP 98120891A EP 0916757 B1 EP0916757 B1 EP 0916757B1
Authority
EP
European Patent Office
Prior art keywords
drawer
guide
wedge
elements
articulated head
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 - Lifetime
Application number
EP98120891A
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English (en)
French (fr)
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EP0916757A3 (de
EP0916757A2 (de
Inventor
Gian Luigi Cremonesi
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FIMTEXTILE SpA
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FIMTEXTILE SpA
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Publication date
Application filed by FIMTEXTILE SpA filed Critical FIMTEXTILE SpA
Publication of EP0916757A2 publication Critical patent/EP0916757A2/de
Publication of EP0916757A3 publication Critical patent/EP0916757A3/de
Application granted granted Critical
Publication of EP0916757B1 publication Critical patent/EP0916757B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/144—Features common to dobbies of different types linking to the heald frame

Definitions

  • the present invention concerns a device to adjust the articulated head of the control linkage for the heald frames of looms and, particularly, a device to adjust and lock the linkage head on the control lever of the weave machine.
  • the heald frames are controlled by the shedding weave machine through linkages, the articulated head of which is connected to a control rocking lever mounted directly on the weave machine.
  • the articulated head allows to carry out a double adjustment: a first one along its own length, and a second one along the control lever. It is thus possible to shift the articulation point of the linkage head, thereby adjusting the stroke of the corresponding heald frame (by moving the head along the control lever), or the position of the dead points of said frame (by varying the length of the head in a longitudinal sense).
  • the locking of the articulated head on the control lever is substantially obtained thanks to the action of members positioned only on one side of said head, in respect of the control lever: in particular, for easiness of access, on the side opposite to that carrying the articulation hinge.
  • the lever side which simply bears against the corresponding abutting surface does not ensure a positive locking especially lengthwise to the coupling plane. It is hence necessary for the control lever to be firmly locked on both of its sides to the articulated head, so as to obtain a direct and positive locking thereof.
  • the EP-744482 discloses an articulated head, which comprises two guide means apt to engage with corresponding wedge-shaped elements acting on the two opposite sides of the control lever. However, this solution is not fully satisfactory.
  • the guide means are inevitably stout, so as to ensure the required structural resistance to the outward pressure force imparted thereon by the wedge-shaped elements. This involves considerable distributed masses, which create vibration problems tied to the oscillations proper to the system.
  • the object of the present invention is to thus supply an articulated adjustment head apt to solve the aforementioned drawbacks and, in particular, an articulated head apt to be adjusted and locked on both sides of the control lever, but simultaneously involving a light structure, a simple construction and small transversal dimensions.
  • an articulated head of the control linkage for the heald frames of looms according to claim 1, operating on the control lever of a shedding machine to carry out the adjustment both of the heald frame stroke and of the starting position of said stroke, of the type comprising:
  • a shedding weave machine 1 causes a control lever 2 to oscillate by a fixed angle ⁇ .
  • a linkage 3 transmits to the heald frame 4 the controls of the lever 2, to which there is fixedly connected an adjustable articulated head 5, hinged in 6 to the connecting rod 7 of the linkage 3.
  • the articulated head 5 comprises a stiff long guide 8 and a drawer 9 longitudinally sliding into said guide 8.
  • the control lever 2 is inserted across the guide 8and the drawer 9.
  • control lever 2 is positively locked merely in correspondence of its outward side S1, far from the articulation point or hinge 6 - by means of first wedge-shaped elements 19 - while its inward side S, adjacent to the hinge 6, is simply forced to about against the bottom of the drawer 9 by the opposing action of the locking means 19.
  • positive locking means - centrally positioned - are provided also in correspondence of the inward side S2 of the control lever 2.
  • the bottom of the drawer 9 comprises a block 100 with double chocks engaging with two hammer elements 101.
  • Each hammer element 101 has a head 102 wider than the width of the slot 11 (fig. 3) formed into the drawer 9, and a wedge-shaped shank 103, sufficiently thin to be housed in the drawer 9 and cross the longitudinal slots 10 and 11 formed, respectively, into the guide 8 and into the drawer 9.
  • the shanks 103 have inner surfaces 103a, engaging with the inward side S2 of of the control lever 2, and outer surfaces 103b, formed with an opposite inclination, like a wedge, and cooperating with the doublechock block 100.
  • the inclination of the outer surfaces 103b is such that a pressure imparted thereon by the ends of the double-chock block 100 causes the approach of the two hammer elements 101, which thus snap onto the lateral sides of the guide 8.
  • the two shanks 103 are preferably connected together by an elastic member 104, such as a helical spring, which keeps them joined and thus inserted into the drawer 9 also when no pressure is imparted by the block 100, that is, in the absence of the control lever 2, or when the locking has not yet been performed and the lever 2 is loose inside the drawer 9.
  • an elastic member 104 such as a helical spring
  • This last operation forces the lever 2 to press, with its inward side S2, onto the hammer elements 101, which in turn press onto the block 100 with double chocks, positioned onto the bottom of the drawer 9.
  • the reaction of the block 100 onto the hammer elements 101 thanks to the wedgeshaped surfaces, is converted into a transversal pressure imparted on the hammer elements 101, in an inward direction, namely towards the longitudinal axis a-a' of the articulated head 5; this leads the heads 102 of the hammer elements 101 to forcedly bear against the lateral surfaces of the guide 8.
  • the lateral surfaces of the guide 8 have rims 105 bent at 90. towards the inside of the drawer 9, said rims being apt to retain and precisely guide said drawer.
  • the two hammer elements 101 snap onto the lateral sides of the guide 8, under the reaction of the block 100 determined by the pressure of the lever 2, the heads 102 of said hammer elements are forced to abut against the lateral surfaces of the guide 8 and, in particular, against the rims 105, thereby ensuring a first retaining and locking effect.
  • the pressure of the heads 102 causes a local deformation of the rims 105, which clamp the edges of the drawer 9, thereby ensuring a further retaining action and locking of said drawer onto the guide 8, close to the hinge 6.
  • the peripheral positive locking system no longer has - as in EP-A-705926 -a double locking element, but merely comprises the first wedge-shaped elements 19 operated by the screw 20.
  • the solid portion 12 of the drawer 9 has a protuberance 106 which engages with the wedge-shaped element 21 by way of a surface 21A inclined in respect of the longitudinal sliding axis of the drawer 9.
  • a further intermediate wedge-shaped element 107 is interposed between the first wedge-shaped elements 19, the solid portion 12 and the second wedge-shaped element 21.
  • this second embodiment allows to obtain the positive locking of both sides S1 and S2 of the control lever 2, by means of a device easy to operate, of reduced dimensions, light, and of simple construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Claims (7)

  1. Gelenkkopf des Steuergestänges über den Webschaft von Webstühlen, der aus dem Steuerhebel einer Fachbildemaschine einwirkt, um sowohl den Hub des Webschafts als auch die Position der Totpunkte des genannten Schafts einzustellen, in der Bauart umfassend:
    eine starre lange Führung (8);
    einen Auszug (9), der darin mit Präzision in Längsrichtung verschieblich ist, wobei ein Abschnitt des Steuerhebels (2) die Führung (8) und den Auszug (9) kreuzt; und
    zumindest eine erste und zweite Zwangsverriegelungseinrichtung, die gegenüberliegend der beiden Seiten (S1, S2) des genannten Hebels (2) angeordnet sind und auf diese einwirken,
    wobei die erste Zwangsverriegelungseinrichtung zentral zwischen dem Gelenkpunkt (6) des Gelenkkopfs (5) und dem Steuerhebel (2) angeordnet ist und keilförmige Elemente (100, 101) umfaßt, die dazu bestimmt sind, einen unmittelbaren Druck im wesentlichen quer zu der Führung (8) aufzubringen, unter der Wirkung der benachbarten Seite (S2) des genannten Steuerhebels (2), der auf die keilförmigen Elemente (100, 101) durch die Wirkung der zweiten Zwangsverriegelungseinrichtung gepreßt wird,
    dadurch gekennzeichnet, daß die erste Zwangsverriegelungseinrichtung aus zwei Hammerelementen (101) besteht, die durch die keilförmigen Elemente (100, 101) in Richtung auf die Längsachse (a, a') der starren Stangenführung (8) gedrückt werden und die auf die Seiten der genannten Führung (8) wirken.
  2. Gelenkkopf nach Anspruch 1, dadurch gekennzeichnet, daß die Hammerelemente (101) auf einer Seite mit der nach innen weisenden Seite (S2) des Steuerhebels (2) zusammenwirken und auf der anderen Seite mit dem Boden des genannten Aufzugs (9), durch einen Block (100) mit doppelten Klötzen, mit entsprechenden geneigten Flächen (103b) der beiden Hammerelemente (101) in Kontakt kommen.
  3. Gelenkkopf nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Hammerelemente (101) einen Kopf (102) aufweisen, der breiter ist als die Breite von Schlitzen (10, 11), die in den seitlichen Seiten der genannten Führung (8) und des Aufzugs (9) ausgebildet sind, und einen Schaft (103), der weniger weg ist als die Breite der genannten Schlitze (10, 11) und auf dem die genannten geneigten Flächen (103b) ausgebildet sind.
  4. Gelenkkopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Hammerelemente (101) durch ein elastisches Element (104) miteinander verbunden sind.
  5. Gelenkkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Führung (8) in Entsprechung mit den genannten Schlitzen (10, 11) verformbare, umgebogene Ränder (105) aufweist, die in Richtung auf die Innenseite des Auszugs (9) umgebogen sind, wobei die umgebogenen Ränder (105) die seitlichen Seiten des Auszugs (9) unter dem Druck der Köpfe (102) der Hammerelemente (101) festklemmen.
  6. Gelenkkopf nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die zweite Zwangsverriegelungseinrichtung umfaßt:
    ein Paar von ersten keilförmigen Verriegelungselementen (19), die teilweise in die Schlitze (10, 11) der Führung (8) und des Auszugs (9) eingeschoben sind und durch Schraubmittel (20) verbunden sind, wobei die Verriegelungselemente (19) zwischen einer benachbarten Seite (S1) des Steuerhebels (2) und einem festen Abschnitt (12) des Auszugs (9) wirken; und
    zumindest ein weiteres keilförmiges Element (21), das zwischen dem festen Bereich (12) des Auszugs (9) und der Führung (8) wirkt, wobei das genannte Element (21) durch eine Schraube (22) betätigt wird, die mit dem genannten festen Abschnitt verbunden ist und dazu bestimmt ist, den festen Abschnitt (12) des Auszugs (9) in der Führung (8) zu blokkieren.
  7. Gelenkkopf nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die zweite Zwangsverriegelungseinrichtung umfaßt:
    ein Paar von ersten keilförmigen Verriegelungselementen (19), die teilweise in die Schlitze (10, 11) der Führung (8) und des Auszugs (9) eingeschoben sind und durch Schraubmittel (20) verbunden sind, wobei die Verriegelungselemente (19) zwischen einer benachbarten Seite (S1) des Steuerhebels (2) und einem festen Abschnitt (12) des Auszugs (9) wirken;
    zumindest ein zweites keilförmiges Element (21), das zwischen dem festen Abschnitt (12) des Auszugs (9) und der Führung (8) wirkt; und
    zumindest ein drittes keilförmiges Element (107), das zwischen dem festen Abschnitt (12) des Auszugs (9), dem zweiten keilförmigen Element (21) und dem Paar von ersten keilförmigen Verriegelungselementen (19) wirkt;
    wobei das zweite Element (21) und das dritte Element (107) dazu bestimmt sind, den genannten festen Abschnitt (12) des Auszugs (9) in der Führung (8) allein aufgrund der Wirkung des Schraubmittels (20) zu verriegeln.
EP98120891A 1997-10-23 1998-10-22 Vorrichtung zum Einstellen des Gelenkkopfs der Antriebsverbindung für die Schäfte von Webmaschinen Expired - Lifetime EP0916757B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI972389 1997-10-23
IT97MI002389A IT1295386B1 (it) 1997-10-23 1997-10-23 Dispositivo di regolazione della testa della tiranteria di comando dei quadri dei licci in un telaio tessile

Publications (3)

Publication Number Publication Date
EP0916757A2 EP0916757A2 (de) 1999-05-19
EP0916757A3 EP0916757A3 (de) 1999-07-07
EP0916757B1 true EP0916757B1 (de) 2003-11-12

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Application Number Title Priority Date Filing Date
EP98120891A Expired - Lifetime EP0916757B1 (de) 1997-10-23 1998-10-22 Vorrichtung zum Einstellen des Gelenkkopfs der Antriebsverbindung für die Schäfte von Webmaschinen

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EP (1) EP0916757B1 (de)
DE (1) DE69819661T2 (de)
IT (1) IT1295386B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006040474A1 (de) * 2006-08-29 2008-03-20 Schneider & Ozga Antriebsvorrichtung für die Schaftrahmen einer Breitwebmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3668921D1 (de) * 1986-07-09 1990-03-15 Kaiser Gmbh & Co Kg Vorrichtung zum verbinden eines schwingarmes einer schaftmaschine mit einem schaft einer webmaschine.
EP0633335A1 (de) * 1993-07-05 1995-01-11 Stäubli AG (Stäubli SA) (Stäubli Ltd.) Justiereinrichtung im Verbindungsweg zwischen dem Schwingarm einer Schaftmaschine und einem Schaft einer Webmaschine
IT1271244B (it) * 1994-10-05 1997-05-27 Fimtextile Spa Testa della tiranteria di comdando dei quadri dei licci per effettuare in modo indipendente le due regolazioni rispetto alla leva di comando della macchina per la formazione del passo
FR2734610B1 (fr) * 1995-05-24 1997-07-04 Staubli Sa Ets Agrafe reglable pour l'assemblage pivotant des bras oscillants d'une mecanique d'armure avec les bielles d'attaque du systeme de tirage

Also Published As

Publication number Publication date
IT1295386B1 (it) 1999-05-12
ITMI972389A1 (it) 1999-04-23
EP0916757A3 (de) 1999-07-07
DE69819661T2 (de) 2004-10-14
DE69819661D1 (de) 2003-12-18
EP0916757A2 (de) 1999-05-19

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