US 2026/0022502 A1Published application

Weaving machine and method for manufacturing pile fabrics with knotted pile yarns

AssigneeMovint

InventorFrancois T'SAS

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Abstract

The present invention relates to a method and a weaving machine for weaving pile fabrics with knotted pile yarns, configured so that, for sequences (I), (II), (III) of two warp yarn systems, the order of the warp yarn systems in the weft insertion mechanism (X) is changed and a pile yarn (P1)-(P4) is brought between the warp yarn systems, at least one warp yarn (1) of the first warp yarn system and at least one warp yarn (2) of the second warp yarn system are brought back into the original order on either side of a gap (T3), and finally an end part (L1a)-(L4a) of the pile yarn (P1)-(P4) is brought through this gap (T3) from the one edge (20) to the other edge (30) of the warp yarns (1), (2), so that a knot (PK1), (PK2), (PK3), (JK1), (JK2) is formed.

Claims26

Dependent claims

Weaving machine for weaving pile fabrics, comprising means for providing a row of warp yarns running next to each other (1), (2), a shedding device for forming a shed between the warp yarns in each case in several weft insertion cycles (1), (2), a weft insertion mechanism for inserting, in the weft insertion cycles, in each case at least one weft yarn (3), (4) in the shed in a weft direction (X) in order to weave a ground fabric, and means for binding pile yarns (P1)-(P4) to the ground fabric to form the pile, characterized in that the weaving machine is configured so that, in several pile forming cycles, for several sequences (I), (II), (III) of a first and of a second warp yarn system each comprising at least one warp yarn (1), (2) and located in an original order seen in the weft direction (X) on either side of a first gap (T1),

the warp yarns (1), (2) of at least one of the warp yarn systems in the weft insertion mechanism (X) are moved until the warp yarn systems are located, at least over a portion of their length, in a reversed order on either side of a second gap (T2),
a pile yarn (P1)-(P4) is brought into a pull-through position wherein it extends through the second gap (T2) between the first and the second warp yarn system and projects with respective end parts (L1a, L1b), (L2a, L2b), (L3a, L3b), (L4a, L4b) on both edges (20), (30) of the warp yarns,
then the warp yarns of at least one of the warp yarn systems are moved in the weft direction (X) until at least one warp yarn (1) of the first warp yarn system and at least one warp yarn (2) of the second warp yarn system are back again in the original order on either side of a third gap (T3), and
the end part (L1a), (L2a), (L3a), (L4a) of the pile yarn (P1)-(P4) located on the one edge (20) of the warp yarns is pulled through the third gap (T3) so that this end part of the pile yarn (P1)-(P4) extends via the third gap (T3) up to the other edge (30) of the warp yarns (1), (2) and projects on the other edge (30) of the warp yarns.

1 more element

Weaving machine according to one of the preceding claims, characterized in that the weaving machine comprises a cutting device (16), (58) that is configured for cutting off, in several pile forming cycles, each pile yarn to be bound to the ground fabric (P1), (P4) from a pile yarn supply.

Weaving machine according to one of the preceding claims, characterized in that the weaving machine comprises at least one set of a pile yarn feeder (14) and an associated pile yarn receiver (15), wherein the pile yarn feeder (14) is configured so that, in several pile forming cycles, a pile yarn (P1)-(P4) is held in a first feed position on the one side (20) of the warp yarns (1), (2), and wherein the pile yarn receiver (15) is configured so that, in several pile forming cycles, the pile yarn held in the first feed position (P1)-(P4) on the other side (30) of the warp yarns (1), (2) is pulled through a respective second gap (T2) between two warp yarn systems in reversed order and is brought into said pull-through position, and then, after at least one warp yarn (1) of the first warp yarn system and at least one warp yarn (2) of the second warp yarn system are put back again in the original order, the end part (L1a), (L2a), (L3a), (L4a) of the pile yarn (P1)-(P4) located on the one edge (20) of the warp yarns (1), (2) is brought through the first gap (T1) so that this end part (L1a), (L2a), (L3a), (L4a) extends via the third gap (T3) up to the other edge (30) of the warp yarns (1), (2) and projects on the other edge (B), and so that each pile yarn (P1)-(P4) is joined by the formation of a knot (PK1), (PK2), (PK3), (JK1), (JK2) to the warp yarns (1), (2) and comprises two pile legs projecting on the other edge (30) of the warp yarns.

Weaving machine according to one or more of the preceding claims, characterized in that it comprises a row of warp yarns running next to each other (1), (2) which extend mainly in a warp yarn plane (K), and comprise several sequences (I), (II), (III) of a first and second warp yarn system, wherein each warp yarn system comprises at least one warp yarn (1), (2), and wherein the warp yarn systems are located in an original order, seen in the weft direction (X), on either side of a first gap (T1).

Method for manufacturing pile fabrics, wherein a number of warp yarns running next to each other (1), (2) is provided, and wherein in several weft insertion cycles in each case a shed is formed between the warp yarns (1), (2), and at least one weft yarn (3), (4) is brought into the shed in a weft direction (X) so that a ground fabric is woven, and pile yarns (P1)-(P4) are bound to the ground fabric to form the pile on the ground fabric, characterized in that, in several pile forming cycles, for several sequences (I), (II), (III) of a first and of a second warp yarn system each comprising at least one warp yarn (1), (2) and located in an original order seen in the weft direction (X) on either side of a first gap (T1),

a) the warp yarns of at least one of the warp yarn systems are moved in the weft direction (X) until the warp yarn systems are located in a reversed order on either side of a second gap (T2),
b) a pile yarn (P1)-(P4) is brought into a pull-through position wherein it extends through the second gap (T2) between the first (1) and the second warp yarn system (2) and projects with the two end parts (L1a, L1b), (L2a, L2b), (L3a, L3b), (L4a, L4b) on a respective edge (20), (30) of the warp yarns,
c) then the warp yarns of at least one of the warp yarn systems are moved in the weft direction (X) until at least one warp yarn (1) of the first warp yarn system and at least one warp yarn (2) of the second warp yarn system are back again in the original order on either side of a third gap (T3), and
d) an end part (L1a), (L2a), (L3a), (L4a) of the pile yarn (P1)-(P4) located on the one edge (20) of the warp yarns is pulled through the third gap (T3) between the first and the second warp yarn system so that the end part (L1a), (L2a), (L3a), (L4a) of the pile yarn (P1)-(P4) extends via the third gap (T3) up to the other edge (30) of the warp yarns (1), (2) and projects on the other edge (30).

1 more element

Dependencies are inferred from the claim text.