EP2037018A2

EP2037018A2 - Weaving loom for production of combined structures of the ground and gauze weave

Info

Publication number: EP2037018A2
Application number: EP08466024A
Authority: EP
Inventors: Josef Dvorak; Petr Karel; Jiri Mlynar; Zdenek Volansky; Josef Zak
Original assignee: Vyzkumny Ustav Textilnich Stroju Liberec AS; Vuts AS
Current assignee: Vuts AS
Priority date: 2007-09-11
Filing date: 2008-09-09
Publication date: 2009-03-18
Anticipated expiration: 2028-09-09
Also published as: CZ2007619A3; EP2037018B8; EP2037018B1; CZ306172B6; EP2037018A3

Abstract

The weaving loom for production of combined structures of the ground and gauze weave comprising the device for control of at least a triad of systems of warp ends and the loom reed (11) with lamellas, between which there are spaces for passage of warp ends. The warp ends are separated into at least three systems (2, 3, 4), out of which at least two are guided into basic distributing means (15) realising the motion necessary to perform the shed for weft insertion and for mutual interlacing of warp ends while at least one is through the deflecting bar (18) guided into the guiding means (13) of rotating warp ends.

Description

Technical field

The invention relates to the weaving loom for production of combined structures of the ground and gauze weave comprising the device for control of at least a triad of systems of warp ends and the loom reed with lamellas, between which there are spaces for passage of warp ends.

Background art

The woven fabrics with combination of the ground (or derived) weaves and gauze weave are of a specific mechanical properties, especially the weave strength, but they also have specific pattern-decoration possibilities. In the past, the combined structures were applied especially at production of curtains in combination of Jacquard and gauze weave. At present quite important become the technical woven fabrics with combined structure of the plain and gauze weave, that show an increased weave strength and resistance against deformations. The known devices for production of woven fabrics with combined weave utilise the heald harnesses to control the warp ends. It is common, that the harness of the ground weaves is positioned closer to the warp and the gauze harness is positioned closer to the weaver. Nevertheless utilisation of heald systems for creating of gauze weaves brings the main disadvantage in the form of a low working speed. This disadvantage still has not been solved at the machines for combined weaves. Though increasing of working speed upon creation of purely gauze weaves is known by usage of the healdless systems, e. g. according to the CZ PV 2003-2887 , but these systems are for the time being designated exclusively for weaving of non-combined purely gauze weave.
The goal of the invention is to enable usage of the healdless weaving systems for weaving of combined weaves, especially the combinations of the ground and gauze weave.

Principle of the invention

The goal of the invention has been achieved by the weaving loom for production of combined structures of the ground and gauze weave, whose principle consists in that the warp ends are divided to at least three systems, out of which at least two are guided into the basic distributing means realising the motion necessary to form the shed for weft insertion and for a mutual interlacing of warp ends and at least one is over the deflecting bar guided into the guiding means of rotating warp ends.
The preferred embodiments of invention are a subject of the dependent patent claims and they are in detail described in examples of embodiment of the invention.

Description of the drawing

The invention is schematically shown in the enclosed drawings, where the Fig. 1 shows an axonometric view to the two warp ends and 1 weft thread interlaced in the basic plain weave and whipped by one gauze thread, the Fig. 2 axonometric view to the means creating the combined structure of ground and gauze weave and the Fig. 3 a section through the weaving loom with arrangement of means for production of combination of a ground and gauze weave.

Examples of embodiment

The weaving loom 20 for production of combined structures of the ground and gauze weave comprises the warp beam 21 or several warp beams from which in a known manner are brought the warp ends which are separated into three or more systems 2, 3, 4. At least the first system 4 of warp ends, which creates so called rotating threads is fed via the deflecting bar 18 into the guiding means 13 of rotating warp ends, which comprises the needles 12 with eyes for guiding the rotating threads. The guiding means 13 with needles 12 is coupled with the drive and it carries out the horizontal motion in the z direction. Motion of the guiding means 13 in the z direction is synchronised with the motion of further described basic distributing means 15 realising the motion necessary to perform the shed for weft insertion and for mutual interlacing of warp ends.
The drive of the guiding means 13 is preferably formed of the device among the specialists called "electronic cam". From eyes of needles 12 the individual threads of the first system 4 of warp ends, i.e. the rotating threads are guided into the spaces between the dents of the loom reed 11, like this arrangement is described at the known solution for production of purely gauze weaves being comprised in the CZ PV 2003-2887 .
The system 2, 3 of the ground warp ends must have at least two subgroups, which are guided into the weaving means realising the motion necessary to create the shed for weft insertion and for mutual interlacing of the warp ends. In case of the simplest plain weave the systems 2, 3 of the basic warp ends are guided into the basic distributing means 15 with carrier beams 152 , 153 and fastened by the flat needles 14 or the half healds. The means 15 are coupled with the not represented motion mechanism, which in an interval of a certain weaving cycle of the machine, e.g. according to the speed, either leaves the respective carrier beam 152, 153 in the bottom dead centre, in which the threads being guided in it are under the level of the weft 1 , or it lifts the respective carrier beam 152, 153 into the top dead centre, in which the threads being guided in it are above the level of the weft 1 . By this distributing motion of the carrier beams 152, 153 in the direction y the ground weaves are formed; in the represented example of embodiment in the Fig. 1 the systems 2, 3 of warp ends together with the weft 1 create the plain weave.
In the not represented example of embodiment the means 15 are formed of the classic heald shafts coupled with the drive formed either by the heald machine or the Jacquard machine.
Individual threads of each system 2, 3 of warp ends are further directed into spaces between the dents of the loom reed 11 , into which the individual threads of the first system 4 of warp ends are guided, i.e. the rotating threads.
By a horizontal motion of the guiding means 13 in the z direction in a time synchronisation with beating-up of the weft 1 by the loom reed 11 and with the bottom dead centre of the system 2, 3 of warp ends each thread from the first system 4 of the warp ends, i.e. each thread from the rotating threads is whipped around the corresponding couple of warp ends from the system 2, 3 of warp ends.
Motion of the basic distributing means 15 can preferably be secured by individual electronic engines or servomotors controlled in such a way that the means 15 could interlace the warp ends of the systems 2, 3 with the weave that corresponds to the number of means 15 on the weaving loom.
After the loom reed 11 the produced woven fabric is being drawn-off by the draw-off mechanism 3 with the take-up rollers and it is wound up to the cloth roller 22.
The invention is not limited only to the expressly described or represented embodiments, but within the mere professional skill it can be modified also to other particular structural embodiments.

List of referential markings

1: weft (weft thread)
2: system of warp ends for creating of ground weave
3: system of warp ends for creating of ground weave
4: system of warp ends for creating of gauze weave
11: loom reed
12: needle
13: guiding means of rotating warp ends
14: flat needle
142: half heald
143: half heald
15: basic distributing means
152: carrier beam
153: carrier beam
18: deflecting bar
20: weaving loom for production of fabric with combined structure of the ground and gauze weave
21: warp beam
22: cloth roller
x: motion direction
y: motion direction
z: motion direction

Claims

The weaving loom for production of combined structures of the ground and gauze weave comprising the device for control of at least a triad of systems of warp ends and the loom reed with lamellas, between which there are spaces for passage of warp ends, characterised in that the warp ends are separated to at least three systems (2, 3, 4), out of which at least two are guided into the basic distributing means (15) realising the motion necessary to perform the shed for weft insertion and for mutual interlacing of warp ends while at least one is through the deflecting bar (18) guided into the guiding means (13) of rotating warp ends.
The weaving loom according to the claim 1, characterised in that the basic distributing means (15) are formed of carrier beams (152, 153) with needles and/or half healds (142, 143), while the carrier beams are coupled with individual electronically controlled drives.
The weaving loom according to the claim 1, characterised in that the basic distributing means (15) are formed of heald shafts coupled with the heald machine and/or the Jacquard machine.
The weaving loom according to any of the claims 1 to 3, characterised in that the guiding means (13) of rotating warp ends comprises the needles (12) with eyes for guiding the rotating warp ends.
The weaving loom according to any of the claims 1 to 3, characterised in that the guiding means (13) of rotating warp ends is coupled with the drive formed of the electronic cam.