EP3347512A1

EP3347512A1 - Loom for producing woven material, having incorporated knitting threads or cover threads

Info

Publication number: EP3347512A1
Application number: EP16769869.5A
Authority: EP
Inventors: Silvan Borer; Bernhard Engesser
Original assignee: Textilma AG
Current assignee: Textilma AG
Priority date: 2015-09-10
Filing date: 2016-08-18
Publication date: 2018-07-18
Anticipated expiration: 2036-08-18
Also published as: US10597802B2; CN108699736A; EP3347512B1; HK1256910A1; KR20180084741A; WO2017042015A1; EP3141642A1; CN108699736B; US20180363170A1

Abstract

In order to create a loom having incorporated knitting threads, the corresponding device for incorporating knitting threads comprises a feeding mechanism for each knitting thread and, also for each knitting thread, a dipping guide needle (4) which includes a thread guiding eye and can dip between warp threads (2, 3) into the shed, all the way below the weft insertion path of the weft thread insertion mechanism (7). Each of the dipping guide needles (4) is arranged so as to be able to move transversely to the direction of the warp threads, thus being able to move across the width of the material to be woven. Furthermore, a combing shaft (10) is provided that has a plurality of teeth with intermediate spaces for guiding the knitting threads. The combing shaft (10) is arranged transversely to the direction of the warp threads, behind the stop position of the reed, can move transversely to the direction of the warp threads, and can rotate about an axis in the direction of the bar. The teeth of the combing shaft have protrusions which are designed in such a way that the teeth can retain the knitting threads in at least one rotational position of the combing shaft.

Description

Weaving machine for the production of Webqut with incorporated knitted or threaded threads Technical area

The invention relates to a weaving machine for the production of woven fabric with incorporated knit or pile threads.

State of the art

A loom of the type mentioned is known from CH 490 541. There fastening threads are arranged by means of feeding needles during the weaving of a band. There are no indications to find how the needle loom could advantageously perform the incorporation of knitting or Legefäden. A similar technology has been independently disclosed in US 3,796,234A.

From WO 2007/071077 A1 it is known to incorporate a conductor thread in various ways by arranging the feed needle on a shaft aligned transversely to the warp direction, which is provided with a first drive device for carrying out a pivoting movement of the shaft and furthermore with a second drive device for Method is connected in the axial direction. The engraver dives by pivoting in the shed on and off. As a result, the engraver can be moved across the width of the woven goods, in the case of WO 2007/071077 A1 of a band.

From JP 2005/015954 A, a loom for weaving an effect thread is known, which can be incorporated into the base fabric. The weaving machine of JP 2005/015954 A is equipped with a shedding-thread shedding device which makes it possible to select individual warp threads. The effect thread is a selected, additional warp thread. Both the effect thread and additional warp threads are guided within the shed. This has the consequence that the effect threads of the warp, which is supplied from above the additional warp threads and the selected effect thread, are tied off from these warp threads during a transverse movement of the effect threads. This means that the Ef not be attached above the base fabric, but be part of the basic tissue and thus change the structure.

From EP 2 395 140 A1 a loom is known, which by means of a Kettlege- device, which is laterally about one or more warp threads of the base fabric movable and thus able to bind additional threads, there called Legefäden on the ground fabric. The weaving machine of EP 2 395 140 A1 is certainly suitable for certain applications, in particular in the applications mentioned in EP 2 395 140 A1. However, in certain applications it appears necessary on the one hand to take measures to relieve the additional threads, that is to say the pile threads of EP 2 395 140 A1, and on the other hand to achieve a higher flexibility of the weaving machine, especially with several additional threads, in order to ensure a clean effect or laying the additional threads to allow. In EP 2 395 140 A1 a retaining hook - originally also engraver is called, but has nothing to do with the engraver here and in the further mentioned, since he lacks the connection to the additional thread - proposed, but because of its low Flexibility is only suitable for one additional thread (laying thread). From WO 2013/107571 A2, a loom with a device for forming additional shot effects is known, which has turned out to be disadvantageous and the disadvantages of which overcome the object of the invention. In the WO

In fact, it is proposed that slidable guide needles be arranged between reed and shed forming device in the vertical direction and in the weft direction, which can bring effect threads into the lower shed so that the weft insertion element can move through the effect thread loop formed thereby. A first fundamental disadvantage of this device is that the effect thread loops are getting smaller, the larger the shift strokes of the guide needles in the weft direction. The weft insertion element can then no longer reliably or not at all move through the effect yarn loops. A second fundamental disadvantage is that the reed is open at the top and the upper frame of the reed is missing. The reed As a result, teeth can bend in the weft direction even with a small force, which leads to warp density differences in the fabric.

Presentation of the invention

The object of the invention is to provide a loom, which is suitable for the production of woven fabric with incorporated knitting or Legefäden.

The object is achieved by the machine according to claim 1 in the loom mentioned above. The measures of the invention initially have the consequence that several threads - in the following they are called knitting threads - in the weft direction - can be tied off. Furthermore, the setting on the fabric side of the tape fabric is not or hardly visible. In this case, the machine - in contrast to the weaving machine of JP 2005/015954 A - is able to incorporate a thread without noticeably altering the weaving material. By the measure of the invention it is possible that the additional threads do not become part of the basic fabric. This avoids the major disadvantage of JP 2005/015954 A.

Compared with the weaving machine of EP 2 395 140 A1 - also with retaining hooks - the loom according to the present invention has the advantage of greater flexibility. Due to the interaction of the engraver with a Fadenführungsöse, so between the warp threads from above dipping hole needle, with the comb shaft with a plurality of teeth with intervening spaces just a much greater flexibility is achieved as in the weaving machine of EP 2 395 140 A1. In addition, can be dispensed with by the measures of the invention on the Kettlegevorrichtung the loom of EP 2 395 140 A1, since the additional threads are not covered by means of additional warp threads, but introduced by means of the engraver with a Fadenführungsöse, so acted. It will be obvious to a person skilled in the art that the measures of the invention achieve their advantage, in particular, in that the comb shaft with a plurality of teeth with intermediate spaces is not only rotatable about its own axis as in EP 2 395 140 A1, but also laterally displaceable and additional borrowed means, preferably at the teeth has projections which are formed so that the teeth can hold the knitting threads in at least one position of Kammwellendrehung, but in another position of Kammwellendrehung release. Thus, in particular the disadvantages of WO 2013/107571 A2 can be overcome. It should be apparent to those skilled in the art that the interaction of the comb shaft with the defined in claim 1 movement or mobility of Lochnadelstecher means of the above means, in particular the projections on the comb shaft enable it practically practical, the teeth are the knitting threads in to be able to hold at least one position of the comb shaft, but release in another axial position. Essential to the invention, but at least fiction-promoting is just the embodiment of the comb shaft: The incorporated threads are kept in a rotational position of the comb until the weft insertion member has reliably moved through the knitting loop. The knitting thread would jump down there from the teeth of the comb shaft if protrusions or noses on the tooth tip would not hold it back. The knitting thread would then suddenly come to lie diagonally across the chain and the knitting needle loop formed by the needle would be so small that the weft insertion can not move through reliable.

Advantageous embodiments of the loom are described in the dependent claims.

It is advantageous in the sense of a simple embodiment if the teeth of the device are arranged next to one another for incorporation in a fixed, preferably the same distance. In this case, two or more Lochnadelstecher can be arranged side by side, so that two or more knitting threads, which must - at more than two by no means have the same distance - can be acted almost coherent. But it is also possible, two or more Lochnadelstecher one behind the other, so that two or more knitting threads can be acted completely independently of each other. These two measures can be linked together become. By both side by side and in succession Lochnadelstecher be arranged.

Of course, the invention can also be used so that only one Lochle- delstecher is activated, so his eyelet is so charged with a thread.

The abovementioned embodiments initially relate to ribbon looms, for example with a weft needle. On wider weaving machines, the technique according to the invention can advantageously be used by providing a weft or, quite conventionally, a shuttle as weft insertion means.

The above-mentioned, as well as the claimed and described in the following embodiments described elements to be used according to the invention in their size, shape design, material usage and their technical conception no special conditions of exception, so that the well-known in the respective field of application selection criteria can apply without restriction. Brief description of the drawings

Embodiments of the weaving machine are described in more detail below with reference to the drawings, in which:

Figure 1 shows a weaving machine in perspective view, according to a first

Embodiment of the present invention, quasi in rest position;

Figure 2 The weaving machine according to Figure 1, wherein the comb shaft and the

Lochnadelstecher compared to Figure 1 is already moved; FIG. 3 shows the weaving machine according to FIG. 1, wherein a lower shed and a upper shed are formed and the piercing needle punch is moved towards the comb shaft; FIG. 4 shows the weaving machine according to FIG. 1, the reed being removed from the stop, the pierce needle piercer is ready to dip in and the comb shaft is rotated by about 80 ° about its axis; the weft needle is already approximated to the area between the upper compartment and the lower compartment; FIG. 5 The loom according to FIG. 1, with the reed further away from the stop, the pierce needle piercer already immersed;

FIG. 6 shows the weaving machine according to FIG. 1, wherein the reed is further removed from the stop, the pierce needle piercer is already immersed below the level of the weft needle;

FIG. 7 shows the weaving machine according to FIG. 1, wherein the weft thread has reached the knitting needle for setting the selvedge; FIG. 8 shows the weaving machine according to FIG. 1, wherein the reed moves back towards the stop, the knitting needle holds the weft thread for setting the selvedge, the weft needle moves out of the shed and the pierce needle punch raises again; Figure 9 The weaving machine according to Figure 1, wherein the reed continues to the

Stop moved, the knitting needle for setting the selvedge has set the weft, the weft needle has moved out of the shed and the Lochnadelstecher is again above the shed;

Figure 10 belonging to the weaving machine according to the figures 1 to 9

Comb wave with the teeth upwards; to the weaving machine according to Figures 1 to 9 associated comb shaft with the teeth backwards;

A loom, similar to the loom in Figure 1 to 9, in a perspective view, wherein four successively arranged engraver are shown with eyelet, in the idle state, shown with an additional knitting thread;

The loom according to Figure 12, wherein a Lochnadelstecher with trained shed is ready for immersion;

The loom according to Figure 12, wherein a Lochnadelstecher is immersed in the shed and introduces the knitting thread;

The loom according to Figure 12, at rest, in a schematic representation of the side;

The loom according to Figure 14, wherein a piercer is immersed in the shed and introduces the knitting thread, in a schematic representation of the side;

A weaving machine according to another embodiment of the present invention, wherein two laying bars are shown for weaving two adjacent ribbons, each of the laying bars having a triple stitcher associated with each comb shaft so as to act on each of the three fixedly spaced applications ; Figure 18 is a typical application made with a loom according to Figure 17; Figure 19 is a representation of the function of the comb shaft, from the side and

Figure 20 is a view of Figure 19, from above. Ways to carry out the invention

In Figures 1 to 9, the operation of the device is described by way of example, in this example, only a Lochnadelstecher is activated, so their eyelet is thus loaded with a thread. The loom shown in Figures 1 to 9 is a needle loom, but it does not depend on the type of weft insertion. The needle loom has warp threads, which can form a lower shed and a upper shed, a weft needle with a weft thread, a Lochnadelstecher with a knitting or laying thread, a knitting needle for setting the selvedge and especially a comb shaft with projections for holding the knitting or load and a guide rail, wherein the comb shaft both laterally displaceable and - in the embodiment by 70 ° to 100 °, preferably about 70 ° - 80 ° is rotatable about its axis. Figure 1 shows the loom quasi in rest position. This is indicated by the fact that no shed is formed. In Figure 2, the comb shaft and the Lochle- dellecher compared to Figure 1 is already moved. In Fig. 3, a lower compartment and a upper compartment are formed, and the pierce needle piercer has been moved toward the comb shaft. In Figure 4, the reed has moved away from the stop, the Lochnadelstecher is ready to dip and the comb shaft is rotated by about 80 ° about its axis. The weft needle is already approximated to the area between the upper compartment and the lower compartment. In FIG. 5, the reed is further away from the stop and the perforated needle piercing is already submerged. In Figure 6, the reed is even further removed from the stop and the Lochnadelstecher is immersed under the level of the weft needle. In Figure 7, the weft has reached the knitting needle for setting the selvedge. In Figure 8, the reed moves back to the stop, the knitting needle for setting the selvedge holds the weft, while the weft needle again moves out of the shed and the Lochnadelstecher lifts again. With the state in Figure 9, the weft insertion, so a weaving process, completed. The reed moves towards the stop, the knitting needle for setting the selvedge has tied off the weft, the weft needle is moved out of the shed again and the Lochnadelstecher is again above the shed. It should be pointed out that the representation according to FIGS. 1 to 9 is a simplified representation, in which - for better understanding - only one piercing needle piercer is shown. The rotatable comb shaft can be seen in two different rotational positions in FIGS. 10 and 11.

A weaving machine, in which 4 successive Lochnadelstecher 4 are shown, is shown in Figure 12 and will be described below. In Figure 12, this weaving machine is shown quasi at rest. In FIG. 13, the weaving machine is then ready to introduce the knitted or laying thread 6. The weft needle is still outside the already formed shed and the reed 1 in the starting position. The simplicity is shown here threaded only one of the Lochnadelstecher 4 with an active or Legefaden 6. In actual operation can - but need not - the other Lochnadelstecher 4 also be provided with a respective Wirkoder Legefaden 6. The comb shaft 10 is in a position in which it is ready to take the knitting or laying yarn 6 to take along. In FIG. 13, the weaving machine according to FIG. 12 is shown at the time when the piercing needle is immersed in the shed and introduces the knitting thread. The weft needle is passed through the shed. FIG. 15 shows the weaving machine from the side with the piercing needle piercer 4 immersed, while FIG. 16 shows it in the condition in which the reed 1 is struck, the piercing needle piercer 4 is again in the upper position and the comb shaft 10 is twisted in such a way that or Legefaden 6 in a transverse movement of the guide rail holds. In the figures 15 and 16, the embodiment of the guide rail is shown, which is arranged on a holder 14 and is rotatable about the Legeschienenachse 15 by means of a guide rail guide 1.

FIG. 16 shows a weaving machine according to a further exemplary embodiment of the present invention, in which two guide rails for weaving two adjacent belts are shown, each of the guide rails having a triple shank associated with a respective comb shaft to act on each of the three three fixed spaced applications. FIG. 18 shows a typical application 17 that was produced with such a weaving machine. FIG. 19 shows the function of the comb shaft 10. The comb shaft 10 is located on the side close to the stop line of the reed and is able to hold the knitting thread 6 by means of the projections 1 1 or - just by a rotation - release. The incorporated threads are held in a rotational position of the comb until the weft insertion member has reliably moved through the knitting thread loop. The knitting thread would - without the projections 1 1 jump there from the teeth of the comb shaft down if the projections 1 1 at the tooth tip would not hold him back. The knitting thread would then suddenly come diagonally over the chain and the knitting needle loop formed by the needle would become so small that the weft insertion organ can no longer move reliably or even no longer. This arrangement ensures process reliability and, in particular, spares the knitting thread, which should not be exposed to great loads, for example as an antenna thread. In Figure 20, this relationship is again shown from above.

LIST OF REFERENCES

1 reed

2 warp threads lower compartment

3 warp threads upper compartment

4 hole needle punch

5 weft

6 active or dry thread

7 weft needle

8 Woven tape with incorporated effects

9 knitting needle for setting the selvage

10 comb shaft

1 1 protrusions on the comb shaft guide bar

Comb shaft axis

holder

Laying rail axis

Laying rail guide

Web product with triple application

Claims

claims

1 . Weaving machine for producing woven goods with incorporated knitting threads

(6), with

a shedding device for forming a shed of warp threads (2, 3) with at least a top shed and a shed,

a weft insertion device (7) for entering

Weft threads (5),

a reed (1) for striking registered

Weft threads (5),

a device for incorporating at least two knitting threads (6), wherein the device for incorporating knitting threads for each knitting thread (6) comprises:

a feeding device for the knitting thread (6),

- For each knitting thread (6) between a warp threads (2, 3) in the shed until below the entry path of the weft insertion device (7) submersible Lochnadelstecher (4) with a thread guide eye for the knitting thread (6),

- Each of the Lochnadelstecher (4) is arranged transversely to the warp direction, whereby each of the Lochnadelstecher (4) can be moved across the width of the Webgutes away,

marked by

- A comb shaft (I O) having a plurality of teeth with intermediate spaces for guiding the knitting threads (6), wherein the comb shaft (10) is arranged with a plurality of teeth transverse to the warp behind the stop position of the reed (1),

a device for moving the comb shaft (10) transversely to the warp direction,

further comprising means for rotating the comb shaft (10) about an axis in the direction of the comb shaft (10), wherein the teeth of the comb shaft (10) means, preferably projections (1 1) which are formed so that the teeth can hold the knitting threads (6) in at least one rotational position of the comb shaft (10).

Loom according to claim 1, characterized in that the teeth of the comb shaft (10) in a fixed, preferably the same distance are arranged side by side.

Loom according to claim 1 or 2, characterized in that at least two Lochnadelstecher (4) are arranged in the weft direction next to each other.

Loom according to claim 3, characterized in that the at least two Lochnadelstecher (4) are arranged at a fixed distance next to each other.

Weaving machine according to one of claims 1 to 4, characterized in that at least two Lochnadelstecher (4) are arranged in the weft direction one behind the other, wherein the successively arranged Lochnadelstecher (4) are independently transversely to the warp direction movable.

Loom according to one of claims 1 to 5, characterized in that the movement of the Lochnadelstechers in the weft direction is provided mechanically, pneumatically or electromechanically.

Loom according to one of claims 1 to 6, characterized in that the plunging movement of the Lochnadelstechers is provided mechanically, pneumatically or electromechanically. Weaving machine according to one of claims 1 to 7, characterized in that the movement of the comb shaft in the weft direction is provided mechanically, pneumatically or electromechanically.

Weaving machine according to one of claims 1 to 8, characterized in that the rotary movement of the comb shaft is provided mechanically, pneumatically or electromechanically.