DE102007005807A1 - Ribbon weaving method for producing textiles, involves bringing loose yarn sections into shed by air jet, fixing loose yarn sections with weft thread, cutting loose yarn sections by cutting device and supplying yarn section to reservoir - Google Patents

Abstract

The method involves bringing loose yarn sections (10) into a shed (4) by air jet. The loose yarn sections are fixed with a weft thread. The yarn sections are cut by a cutting device (7). The yarn sections are supplied to a reservoir (8) by a pneumatic suction device. Weight of the loose yarn sections is in the range of 100 decitex to 1000 decitex and weight of the weft thread is in the range between 20 decitex and 100 decitex. A distance between the yarn sections is changed in a warp direction by an electronic device. An independent claim is also included for a device for bringing yarn sections into a shed in a ribbon loom.

Description

The The present invention relates to a method of weaving ribbons a ribbon loom and a device for a ribbon loom, the the implementation the method according to the invention allows.

The Weaving is one of the oldest Process of humanity to produce textiles. Characteristic for the Weaving is at least two squares crossed at right angles. If the thread systems run at an angle not equal to 90 °, ie more diagonally, one speaks of the lichens. One of the thread systems, called the Chain, consisting of the warp threads, is biased during weaving. For this purpose, successively so-called weft threads are introduced, by being drawn in a particular pattern or uni, across the warp threads become. This gradually creates a coherent textile. The smallest Completed unit of a pattern is called rapport.

The first, vertical thread system is called chain (warp thread), the second one passed through, horizontal is called a shot (weft thread). At the machine (Loom) there must be a device that enables it alternately a part of the warp threads is raised while the other part is lowered, creating a so-called shed, through which the shooter can be guided with the wound shot. The specialized education occurs in the hand loom by kicks, with which moves the shafts or a footstep that opens the shackle on the loom. or jacquard device actuated. The shooter is done by hand or the speed shooter by a beater through the drawer of a rifle case thrown to another or beaten. The shooter boxes can be found on the right and left of the ark, which can be moved back and forth, so that the Riet (the Weberkamm or Webkamm) the just geschossenenen Thread firmly on the previously finished fabric can strike.

mechanical Machines work on the same principle, whereby the work processes mechanized are. The control of the warp thread can this by eccentric, Pens, punch cards, electronic controls, etc., the shooter is done by a Schützenschlagvorrichtung driven by the trade, in modern machines by grippers, compressed air etc. In modern weaving machines and projectiles (the no Carry more yarn spool, but pull the shot behind him) and grippers used in place of the shuttle. Also be air or liquids through the warp threads blown through, which take along the weft.

at Band weaving produces textile ribbons with the help of band looms, earlier mostly hat bands, now often bereavement or on the band woven badges, z. For example Fire departments. Especially with decorative ribbons such as gift ribbons, flower ribbons or Mourning florets there is a need for optical differentiation, to provide new, attractive products that will win the favor of Gain consumer.

Of the Present invention was based on the object, a method and a device for carrying out to provide this method by simple means enable, completely novel woven ribbons which is highly visible from known tapes take off.

It it has now been found that a thread cut in a controlled manner lets and These thread sections can be fed to the shed, creating tapes with be obtained visually new appearance.

object The present invention is in a first embodiment a method for weaving a tape on a ribbon loom at the loose thread sections introduced into the shed and there with the weft threads be fixed.

As already mentioned above, is weaving alternately a part of the warp threads is raised while the other part is lowered, creating a so-called shed, through which the weft thread can be passed. In this Shed becomes a loose according to the invention Thread section introduced. When changing the raised and lowered warp threads the loose thread section is quasi clamped by the warp threads and means the following weft threads finally fixed in the tape.

The Introducing the loose thread sections in the shed can mechanically done, for example, by grippers. But it is also possible and preferred, non-contact Procedure for to insert the loose thread sections. As part of In accordance with the present invention, injection has been preferred Variant exposed so that preferred inventive method characterized in that the introduction of the loose thread sections done by air jet.

The thread sections introduced into the shed may vary in their thickness and in their length. However, it has been found preferable to choose the length of the loose thread sections so that it corresponds at most to the width of the web to be woven. Particularly preferred methods according to the invention are characterized in that the length of the loose Fadenab sections 1 to 100%, preferably 2.5 to 50%, more preferably 5 to 25% and in particular 8 to 15% of the bandwidth.

The Yarn count, yarn size or the denier of a yarn, a fiber or a filament as length-related Mass indicated. A high yarn count means a smaller, a high titer a greater mass / length ratio. It will the yarn count internationally measured in Tex (tex), this unit has the old units denier (den), metric number (Nm) (still in use) and English number (Ne) replaced.

there equals 1 tex to a yarn that weighs 1 gram per 1000 m, a decitex (1 dtex) equals 1 gram per 10,000 m.

It is in the context of the method according to the invention preferred to introduce loose thread sections of threads in the shed, which have a yarn count of 22 dtex and above. From optical and procedural reasons is an upper limit of 20000 dtex (2000 tex) is recommended. Therefore are preferred methods of the invention characterized in that the weight of the loose thread sections between dtex 22 and dtex 20000, preferably between dtex 50 and dtex 15000 and in particular between dtex 100 and dtex 10000.

• – Samenfasern wie Baumwolle, Kapok, Pappelflaum,
• – Bastfasern wie Bambusfaser, Brennessel, Hanf, Jute, Leinen, Ramin,
• – Hartfasern wie Sisal, Manila,
• – Fruchtfasern wie Kokos,
• – Wollen und feine Tierhaare wie Schurwolle, Alpaka, Lama, Vikunja, Guanako, Angora, Kaschmir, Kamelhaar, Mohair,
• – Grobe Tierhaare wie Ziegenhaar, Rinderhaar, Rosshaar,
• – Seiden wie Maulbeerseide, Tussahseide, Muschelseide usw.

As a material for the thread from which the loose thread sections are made, basically all fibers come into consideration, for example

• - seed fibers such as cotton, kapok, poplar fluff,
• - bast fibers such as bamboo fiber, stinging nettle, hemp, jute, linen, ramin,
• - hard fibers like sisal, manila,
• - fruit fibers such as coconut,
• - wool and fine pet hair such as new wool, alpaca, llama, vicuña, guanaco, angora, cashmere, camel hair, mohair,
• - coarse animal hair such as goat hair, cattle hair, horsehair,
• - silks like mulberry silk, tussah silk, shell silk, etc.

• – zellulosische Fasern wie Viskose, Modal, Lyocell, Cupro, Acetat, Triacetat, Papierfasern, Bambusfasern, Cellulon,
• – Gummifasern,
• – Pflanzeneiweißfasern,
• – Tiereiweißfasern wie Lanital, Tiolan, Aralac,
• – Polykondensationsfasern:
• – Polyester,
• – Polyamid,
• – Aramid,
• – Polymerisationsfasern
• – Polyacrylnitril,
• – Polytetrafluorethylen,
• – Polyethylen,
• – Polypropylen,
• – Polyvinylchlorid,
• – Polyadditionsfasern
• – Polyurethan

Particularly preferred is the use of synthetic fibers. Both fibers of natural polymers and those of synthetic polymers can be used according to the invention:

• Cellulosic fibers such as viscose, modal, lyocell, cupro, acetate, triacetate, paper fibers, bamboo fibers, cellulon,
• - rubber fibers,
• - vegetable protein fibers,
• - animal protein fibers such as Lanital, Tiolan, Aralac,
• - polycondensation fibers:
• - polyester,
• - polyamide,
• - Aramid,
• - Polymerization fibers
• - polyacrylonitrile,
• Polytetrafluoroethylene,
• - polyethylene,
• - polypropylene,
• - polyvinyl chloride,
• - polyaddition fibers
• - Polyurethane

The threads their sections are introduced into the shed, monofilament or multifilament. Monofilament threads are "single-ended" like a wire, so not spun. Multifilament threads are on the other hand "multi-fiber", ie of several spun thinner threads. According to the invention preferred do not become single-fiber threads introduced in the form of their sections in the shed, but multifilament Threads, preferably Knitted fabrics made of several threads, which in turn have thread structure. Chenille threads have as particularly preferred. Chenille refers to a fabric or Knitted fabric with a velvety surface made of chenille yarn becomes. The chenille thread has a lot of laterally protruding hair, the so-called pile, which should remind of a hairy caterpillar. The Inner (the so-called soul) of chenille thread consists of at least two threads, the while twisting (twisting) the production of chenille yarn become. While this twisting fall between the cut pile threads the inner threads that so-called soul threads.

This is according to the invention Introduction of chenille threads of acrylic with a yarn count of dtex 500 to 20,000, preferably from dtex 5000 to 9000 and in particular from dtex 7000 to 8000 are preferred.

Similar to in the thread sections to be introduced can also be for the preferred denier the warp and weft threads Provide information.

It is in the context of the method according to the invention preferred, weft threads to be used, which have a yarn count of 10 dtex and above. For optical and procedural reasons, an upper limit of 1000 dtex recommended. Accordingly, preferred are methods according to the invention characterized in that the weight of the weft threads between dtex 10 and dtex 1000, preferably between dtex 15 and dtex 500 and especially between dtex 20 and dtex 100. As a material for the weft threads especially polyester proven.

It has proved to be advantageous according to the invention, the warp threads similar, preferably iden to choose a table like the weft threads. Accordingly, preferred processes according to the invention are characterized in that the weight of the warp yarns is between dtex 10 and dtex 1000, preferably between dtex 15 and dtex 500 and in particular between dtex 20 and dtex 100.

The Chain and weft threads can be both "monofilament" or "multifilament". Monofilament threads are "single-ended" like a wire, so not spun. Multifilament threads are on the other hand "multi-fiber", ie of several thinner Threads spun.

It It is further preferred to weave an edge to optically tape to upgrade and beyond to stabilize. Preferred methods according to the invention are characterized that the weight of the edge threads between dtex 100 and dtex 2500, preferably between dtex 120 and dtex 1500 and especially between dtex 150 and dtex 1000.

The Number of edge threads is freely selectable, preferably 4 to 25, more preferably 5 to 20 and in particular per page 6 to 10 edged threads woven. As edged threads have threads with protective rotation proved to be particularly suitable.

Farther can be an edge reinforcement be woven to the tape later to design better. Here is galvanized steel wire, preferably with a thickness from 0.1 to 0.5 mm, in particular of 0.2 mm, proven.

The Introducing the loose thread sections in the shed can in any intervals respectively. In preferred according to the invention Method can be the distance between the introduced thread sections be changed arbitrarily in the warp direction by an electronic device.

ever after tact time can the loose thread sections more or less closely follow each other. Especially proven have optical reasons distances between the woven loose thread sections from 10 to 1000 Weft threads, preferably from 12 to 500 weft threads, particularly preferably from 15 to 250 weft threads and in particular from 20 up to 100 weft threads.

Preferably become the opening and closing times the pneumatic valves for sucking, blowing and cutting the thread sections by means of proximity switches from the shedding device of the ribbon loom contactless scanned, sent to an evaluation electronics, edited and as eletrischer pulse the pneumatic valves for opening and Shut down fed.

• – mindestens eine Vorratsspule,
• – mindestens eine Transportvorrichtung,
• – mindestens eine Schneidvorrichtung,
• – mindestens einen Vorratsbehälter,
• – mindestens eine elektronische Steuerung sowie
• – mindestens eine pneumatische Einrichtung.

Another object of the present invention is a device for introducing loose thread sections into the shed of a ribbon loom comprising

• At least one supply reel,
• At least one transport device,
• At least one cutting device,
• At least one storage container,
• - at least one electronic control as well
• - At least one pneumatic device.

The inventive device comprises a supply reel, of which a thread by means of a transport device fed to a cutting device becomes. This cutting device lengthens The thread from and produces loose thread sections that are fed to a reservoir. From there, the loose thread sections enter the shed, wherein it by means of a pneumatic device, by an electronic Control is controlled to be injected.

In preferred embodiments The present invention comprises the device according to the invention a pneumatic device controlled by control valves both as a pneumatic suction device as well as a pneumatic blowing device can act.

By the interaction of the electronic control and the pneumatic Device may be the pneumatic device as a pneumatic suction device act and cut to length by the cutter loose Transfer thread sections by vacuum into the storage container. in the Connection can be the pneumatic device as a pneumatic blowing device act and the loose thread sections electronically controlled in inject the shed.

Preferably The pneumatic device is also used to the cutting device actuate. It can the opening and closing times the pneumatic valves for sucking, blowing and cutting the thread sections by means of proximity switches from the shedding device of the ribbon loom contactless scanned, sent to an evaluation electronics, edited and as eletrischer pulse the pneumatic valves for opening and Shut down supplied become. The preferred blowing pressure is 1 to 20 bar, preferably 2.5 to 10 bar and in particular 6 bar.

In dependence from the tact time and the blowing pressure can be the place where the loose Thread section is woven into the band to be determined.

Preferably, a nozzle is used, the loose thread sections targeted in the shed contribute. Inventive devices which comprise a nozzle from which the thread sections can be blown into the open shed by means of the pneumatic device are preferred according to the invention.

• – mindestens ein Faden von mindestens einer Vorratsspule
• – über mindestens eine Transportvorrichtung
• – mindestens einer Schneidvorrichtung zugeführt wird, die lose Fadenabschnitte schneidet,
• – welche mittels mindestens einer pneumatischen Saugeinrichtung
• – mindestens einem Vorratsbehälter zugeführt werden, aus dem sie
• – mittels mindestens einer pneumatischen Blaseinrichtung
• – in das geöffnete Webfach geblasen werden.

Another object of the present invention is a weaving method using the device according to the invention, more particularly a method for introducing loose thread sections in the open shed of a ribbon loom using a device according to the invention, wherein

• - At least one thread of at least one supply spool
• - About at least one transport device
• At least one cutting device is fed, which cuts loose thread sections,
• - Which by means of at least one pneumatic suction device
• - Are fed to at least one reservoir from which they
• - By means of at least one pneumatic blowing device
• - be blown into the open shed.

The inventive method is based on the 1 explained in more detail.

On a commercially available ribbon loom, not shown, warp threads 1 and 2 with weft threads not shown to a band 3 woven. It forms between the raised warp threads 1 and the lowered chain threads 2 the shed 4 out.

From a supply reel 5 is a thread over a transport device 6 a cutting device 7 supplied, the loose thread sections cuts. These are by gravity or by means of a not dargstellten pneumatic suction device a reservoir 8th fed. From the storage container 8th The loose thread sections by means of a non-dargstellten pneumatic blowing device via a nozzle 9 in the open shed 4 blown. The injected loose thread section 10 is due to the lifting or lowering chain threads 1 . 2 "Trapped" and with the weft threads not shown to be woven thread sections 10 ' fixed.

The not shown pneumatic suction device and not shown pneumatic blowing device are preferably a single pneumatic Device, by control valves both as well as pneumatic can act. This is by the electronic, not shown Control controlled.

1

raised warp

2

lowered warp

3

woven tape

4

shed

5

supply spool

6

transport device

7

cutter

8th

reservoir

9

jet

10

loose section of thread

10 '

woven loose thread section

Claims (10)

A method of weaving a tape on a ribbon loom, characterized in that loose thread sections are introduced into the shed and fixed there with the weft threads. Method according to claim 1, characterized in that that the introduction of the loose thread sections by means of air jet he follows. Method according to one of claims 1 or 2, characterized that the length the loose thread sections 1 to 100%, preferably 2.5 to 50%, particularly preferably 5 to 25% and in particular 8 to 15% of the bandwidth is. Method according to one of claims 1 to 3, characterized that the weight of loose thread sections between dtex 22 and dtex 20000, preferably between dtex 50 and dtex 15000 and in particular between dtex 100 and dtex 10000. Method according to one of claims 1 to 4, characterized that the weight of the weft threads between dtex 10 and dtex 1000, preferably between dtex 15 and dtex 500 and in particular between dtex 20 and dtex 100. Method according to one of claims 1 to 5, characterized that the distance between the introduced thread sections in Kettrichtung be changed by an electronic device as desired can. Device for introducing loose thread sections into the opened shed 4 a ribbon loom, comprising - at least one supply reel 5 , - at least one transport device 6 , - at least one cutting device 7 , - at least one storage container 8th , - at least one electronic control and - at least one pneumatic device. Device according to claim 7, characterized that it comprises a pneumatic device, by control valves both as a pneumatic suction device and as a pneumatic Blowing device can act. Device according to one of claims 7 or 8, characterized in that it comprises a nozzle 9 comprises, from the thread sections by means of the pneumatic device in the open shed 4 can be blown. Method for introducing loose thread sections into the opened shed 4 a ribbon loom using a device according to one of claims 7 to 9, characterized in that - at least one thread of at least one supply reel 5 - About at least one transport device 6 - At least one cutting device 7 is supplied, the loose thread sections intersects - which by means of at least one pneumatic suction device - at least one reservoir 8th are fed from which they - by means of at least one pneumatic blowing device - in the open shed 4 be blown.