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1. WO2020065685 - WEFT THREAD CUTTING DEVICE FOR LOOMS WITHOUT SHUTTLES

Publication Number WO/2020/065685
Publication Date 02.04.2020
International Application No. PCT/IT2019/050202
International Filing Date 12.09.2019
IPC
D03D 49/70 2006.01
DTEXTILES; PAPER
03WEAVING
DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
49Details or constructional features not peculiar to looms of a particular type
70Devices for cutting weft threads
D03D 47/12 2006.01
DTEXTILES; PAPER
03WEAVING
DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
47Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
12wherein single picks of weft thread are inserted, i.e. with shedding between each pick
CPC
D03D 47/125
DTEXTILES; PAPER
03WEAVING
DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
47Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
12wherein single picks of weft thread are inserted, i.e. with shedding between each pick
125Weft holding devices
D03D 49/70
DTEXTILES; PAPER
03WEAVING
DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
49Details or constructional features not peculiar to looms of a particular type
70Devices for cutting weft threads
Applicants
  • SANTEX RIMAR GROUP S.R.L. [IT]/[IT]
Inventors
  • CORAIN, Luciano
Agents
  • MITOLA Marco
  • DE FILIPPIS, Sara
  • SANTI, Filippo
  • TIBURZI, Andrea
  • BANCHETTI, Marina
  • GITTO, Serena
  • BALZANO, Francesca
  • MULAS, Chiara
  • FERRIERO, Paolo
  • BIONDINI, Daniele
  • CATALDI, Silvia
Priority Data
10201800000898027.09.2018IT
Publication Language English (EN)
Filing Language Italian (IT)
Designated States
Title
(EN) WEFT THREAD CUTTING DEVICE FOR LOOMS WITHOUT SHUTTLES
(FR) DISPOSITIF DE COUPE DE FIL DE TRAME POUR MÉTIERS À TISSER SANS NAVETTES
Abstract
(EN)
A weft thread cutting device for shuttle-less looms, said device being placed between a fabric edge (1 ), a comb (2) and a warp mouth, on one side, and a weft thread selector, on the other side; the weft threads, coming from a plurality of eyelets (5, 6, 7, 8, 9, 10, 11, 12), join at a vertex (T) located at the fabric edge (1 ) and at the beating line of the comb (2) where the formation of the fabric occurs. In particular, the cutting device is composed of a rotating disk (19) with a cutting edge, which is configured to cut the weft threads by means of a motor (18) which keeps it in rotation, and by means of a step control motor (25), which, through a rotating shaft (17) provided with an eccentric (17'), controls the motion of a hinged lever (15) which is configured to swing with respect to a longitudinal axis (26) of the step control motor (25). The lever (15) is shaped, at one end, in the form of two arms (13, 14), which rest respectively on the surfaces of two elastic plates (20, 21), and is also connected, at the other end, to the eccentric (17').
(FR)
L'invention concerne un dispositif de coupe de fil de trame pour métiers à tisser sans navette, ledit dispositif étant placé entre un bord de tissu (1), un peigne (2) et une embouchure de chaîne, d'un côté, et un sélecteur de fil de trame, de l'autre côté ; les fils de trame provenant d'une pluralité d'œillets (5, 6, 7, 8, 9, 10, 11, 12), se rejoignent en un sommet (T) situé au bord de tissu et au niveau de la ligne de battement du peigne (2) là où se forme le tissu. En particulier, le dispositif de coupe est composé d'un disque rotatif (19) avec un bord de coupe, qui est conçu pour couper les fils de trame au moyen d'un moteur (18) qui le maintient en rotation, et au moyen d'un moteur de commande de pas (25), qui, par l'intermédiaire d'un arbre rotatif (17) pourvu d'un excentrique (17'), commande le mouvement d'un levier articulé (15) qui est conçu pour osciller par rapport à un axe longitudinal (26) du moteur de commande de pas (25). Le levier (15), à une extrémité, a la forme de deux bras (13, 14), qui reposent respectivement sur les surfaces de deux plaques élastiques (20, 21), et est également relié, à l'autre extrémité, à l'excentrique (17').
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