US 7,451,786 B2Granted

Weaving machine for weaving pile fabrics, and set of at least two spacers provided to be mounted next to one another in a weaving machine for weaving pile fabrics

AssigneeN.V. Michel Van de Wiele

InventorJohny Debaes

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Abstract

The invention relates to a weaving machine for weaving pile fabrics, and a set (100) of at least two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42), wherein the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) are provided and arranged in the weaving machine in such a manner that the pile warp yarns (18, 18′) have more space during their movement in the shed-forming zone towards the fabric line in the warp direction at their entry point in the array of lancets, so that they are hindered to a lesser degree by this array of lancets.

Claims14

Dependent claims

Weaving machine for weaving pile fabrics consisting of weft yarns, ground warp yarns and pile warp yarns, comprising:

a bottom and/or top cutting bar which is provided in order to guide at least one pile fabric;
at least one set (100) of at least two spacers(1-4, 11, 12, 21, 22, 31, 32, 41 and 42) extending next to one another which extend between the pile warp yarns (18, 18′, 18″, 18′″) and which are provided to either achieve a uniform pile height between two formed pile fabrics, or to determine the pile loop height in one or more pile fabrics which comprise looped pile, wherein these two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) extending next to one another, at their ends near the one or more cutting bars, have projections which coincide on projection in the weft direction onto a plane at right angles to the weft direction;
a yarn stock (20, 20′) of pile warp yarns;
one or more shed-forming devices which drive healds through which ground and/or pile warp yarns (18, 18′, 18″, 18′″) extend in order to position these warp yarns with regard to the weft yarns;
a supply zone of pile warp yarns (18, 18′, 18″, 18′″) which extends between said thread stock and said healds;
at least two holders (7, 8) to clamp the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) into, and which are arranged one above the other outside said supply zone;
a shed-forming zone (9) within which the pile warp yarns (18, 18′, 18″, 18′″) can move, and which is delimited by said holders (7, 8) of the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) and said shed-forming devices;
wherein the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) are provided and arranged in such a manner that the projections in the weft direction onto a plane at right angles to the weft direction of the path of at least one pile warp thread (18, 18′, 18″, 18′″) starting from the holders (7, 8) of the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) up to said cutting bars, and of said two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) extending next to one another, viewed in the direction of travel of the pile warp yarn (18, 18′, 18″, 18′″), successively relate to one another as follows:
in a first section, said projection of the path of the pile warp yarn (18, 18′, 18″, 18′″) does not overlap any of the projections of said two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42);
subsequently, said projection of the path of the pile warp yarn (18, 18′, 18″, 18′″) overlaps the projection of one of said projections of said two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) separately, and
finally, said projection of the path of the pile warp yarn (18, 18′, 18″, 18′″) overlaps the projections of both said spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) simultaneously.

8 more elements

Set (100) of at least two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) provided to be mounted next to one another in a weaving machine for weaving pile fabrics, consisting of weft yarns, ground warp yarns and pile warp yarns (18, 18′, 18″, 18′″), the weaving machine comprising

a bottom and/or top cutting bar which is provided in order to guide at least one pile fabric;
a yarn stock of pile warp yarns (18, 18′, 18″, 18′″);
one or more shed-forming devices which drive healds through which ground and/or pile warp yarns (18, 18′, 18″, 18′″) extend in order to position these warp yarns with regard to the weft yarns;
a supply zone of pile warp yarns (18, 18′, 18″, 18′″) which extends between said yarn stock (20, 20′, 20″, 20′″) and said healds (19a, 19a′, 19a″, 19a′″);
a shed-forming zone within which the pile warp yarns (18, 18′, 18″, 18′″) can move, and which is delimited by said holders (7, 8) of the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) and said shed-forming devices;
and wherein the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) are provided either to achieve a uniform pile height between two formed pile fabrics, or to determine the pile loop height in one or more pile fabrics which comprise looped pile, and are provided in order to be clamped into at least two holders (7, 8) which are arranged one above the other outside said supply zone;
wherein the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) are provided in such a manner that when they are mounted in the weaving machine, upon projection in the weft direction onto a plane at right angles to the weft direction of the path of at least one pile warp thread (18, 18′, 18″, 18′″) starting from the holders (7, 8) of the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) up to said cutting bars, together with the projections in the weft direction onto a plane at right angles to the weft direction of the spacer (1-4, 11, 12, 21, 22, 31, 32, 41 and 42), viewed in the direction of travel of the pile warp thread (18, 18′, 18″, 18′″), these spacers:
have a first section, the projection of which does not overlap the projection of the path of the pile warp thread (18, 18′, 18″, 18′″);
have a second section, the projection of one of the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) of which overlaps the projection of the path of the pile warp thread (18, 18′, 18″, 18′″) and the projection of the other adjacent spacer (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) does not overlap the projection of the pile warp thread (18, 18′, 18″, 18′″);
have a third section, the projection of which overlaps the projection of the path of the pile warp thread (18, 18′, 18″, 18′″).

7 more elements

Dependencies are inferred from the claim text.

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Abstract

Weaving machine for weaving pile fabrics consisting of weft yarns, ground warp yarns and pile warp yarns, comprising:

a bottom and/or top cutting bar which is provided in order to guide at least one pile fabric;
at least one set (100) of at least two spacers(1-4, 11, 12, 21, 22, 31, 32, 41 and 42) extending next to one another which extend between the pile warp yarns (18, 18′, 18″, 18′″) and which are provided to either achieve a uniform pile height between two formed pile fabrics, or to determine the pile loop height in one or more pile fabrics which comprise looped pile, wherein these two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) extending next to one another, at their ends near the one or more cutting bars, have projections which coincide on projection in the weft direction onto a plane at right angles to the weft direction;
a yarn stock (20, 20′) of pile warp yarns;
one or more shed-forming devices which drive healds through which ground and/or pile warp yarns (18, 18′, 18″, 18′″) extend in order to position these warp yarns with regard to the weft yarns;
a supply zone of pile warp yarns (18, 18′, 18″, 18′″) which extends between said thread stock and said healds;
at least two holders (7, 8) to clamp the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) into, and which are arranged one above the other outside said supply zone;
a shed-forming zone (9) within which the pile warp yarns (18, 18′, 18″, 18′″) can move, and which is delimited by said holders (7, 8) of the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) and said shed-forming devices;
wherein the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) are provided and arranged in such a manner that the projections in the weft direction onto a plane at right angles to the weft direction of the path of at least one pile warp thread (18, 18′, 18″, 18′″) starting from the holders (7, 8) of the spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) up to said cutting bars, and of said two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) extending next to one another, viewed in the direction of travel of the pile warp yarn (18, 18′, 18″, 18′″), successively relate to one another as follows:
in a first section, said projection of the path of the pile warp yarn (18, 18′, 18″, 18′″) does not overlap any of the projections of said two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42);
subsequently, said projection of the path of the pile warp yarn (18, 18′, 18″, 18′″) overlaps the projection of one of said projections of said two spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) separately, and
finally, said projection of the path of the pile warp yarn (18, 18′, 18″, 18′″) overlaps the projections of both said spacers (1-4, 11, 12, 21, 22, 31, 32, 41 and 42) simultaneously.

8 more elements