EP1375715A1 - Method and double-plush loom for making patterned pile fabric - Google Patents

Abstract

In a double-web loom weaving process for patterned pile fabrics, two webs are linked by two types of yarn loops (226). The two webs are then separated by a knife (41) as it slices through the loop peaks on a path between and parallel to the webs (22a, 22b), creating upper and lower woven piles (2a, 2b). The threads forming the loops (225, 225b) are tautened between a base weft (221, 222) and a supplementary weft (231a, 231b) inserted by a lancet. The lancets form an elongated slit into which the supplementary weft (231a, 231b) is inserted. The supplementary weft threads are bound and tautened by strips on both sides of the twin pile weave (2) in the slit plane. After withdrawal of the lancets the supplementary weft threads (231a, 231b) and their strips are moved by guides away from the knife which then cuts the pile loop. Also claimed is a double-web weaving loom.

Description

The invention relates to a method for producing patterned pile fabric on a double-pile weaving machine, with a double-pile fabric with two Gundgewebe connected by Florhenkel by separating the Florhenkel with a knife that can be moved parallel to the basic goods, an upper and a lower pile fabric is produced, which has pile loops and pile legs, the pile loops forming pile threads between a base weft and one guided by lancets at a distance from the respective base tissue Auxiliary shot are spanned, the auxiliary shots in an alley between the lancet groups assigned to the two basic tissues and removed after completion of the double pile fabric.

The invention also relates to a double pile weaving machine for the production of Double pile fabrics with areas of pile handles arranged according to the pattern and areas made of pole loops, with at least two that can be activated simultaneously weft insertion planes assigned to a web zone, with means for separating the Florhenkel between the two base fabrics of the double pile fabric and with at least one jacquard machine for pattern-based control of choir patterned pile threads per warp course.

A weaving method of this type is known from DE 199 18 171 A1. On a double-protective double carpet weaving machine, two flat fabrics are produced, both of which serve as the base fabric of a pile or carpet fabric. Both Basic fabrics are combined with each other by means of pile handles of different colors connected. In both base fabrics there are non-patterning pile threads, so-called dead poles, mostly stretched between the back and inner shots.

The jacquard machine can select these pile threads and either for binding as a dead pole on the base fabric or for the formation of pole handles in Connection with the opposite base fabric for subject formation move. A so-called double pile fabric or double pile fabric is created. By the pole handles are separated in the middle between the two basic goods two pile fabrics or carpets. Both pile fabrics have in the pile layer both pile areas and areas with exclusively closed pile loops on.

The pole loops formed in this way - called the wrong bouclé - extend usually only over a slightly thicker weft thread of the base fabric and therefore have only small dimensions. They are regularly significantly flatter than the pile legs in the pile areas. This fake bouclé is called also as a pattern on the bottom.

If you want to enlarge the pole loops with thicker shots, they are shot in the direction of the shot Adjacent pile handles are spread out in the warp direction. They form in Weft direction a cord-like pile surface. It is unsatisfactory. It can not pile fabric with reasonable kick properties and more uniform Pole height are generated. The pile loops and pile legs cannot roughly a uniform plane can be positioned anywhere on the pole surface.

EP 1 081 260 A1 is used for the production of a pile fabric Pole loops and pile legs use a kind of rod weaving machine proposed. The single-action rod weaving machine carries in everyone third tour on the pole side a thicker shot, over the per warp course a selected pile thread forms a larger loop. In the same Tour becomes a cutting rod (pole form element) in an overlying shed registered, via which - controlled by a jacquard machine - according to the sample Pile threads can be guided. These larger ones formed Pole loops are separated and formed when the cutting rod is pulled out upright pile legs anchored in the base fabric. These pile legs are significantly longer than the pole loops formed on the goods base.

A major disadvantage is that the pole loops spread Spread the pile legs in the pile row with thick weft threads so that the Pile areas in the weft direction get a rib or cord structure.

Another disadvantage of this method is the low productivity. The rod weaving machine works one-tier and requires for incorporating a number of Pile loops or pile loops a total of three weaving machine tours. Because of the large mass of the cutting rod to be entered in a tour can Only operate the loom at low speed.

Another element that limits the working speed of the weaving machine is the cutting rod during its cutting function. Warm the cutting rods during the cutting process such that when a Melt the ends of the pile legs at a certain temperature. That affects the quality of the pile fabric produced. For this reason, one is a further reduction in the working speed of the weaving machine is usually unavoidable.

The height of the pole loops can also be determined using the method mentioned here do not adjust to the greater height of the pile legs if pile loops and The pile legs are positioned side by side in the weft direction. The cross-section of the rod determines the height difference between the pile leg and Pile loops.

The walking comfort can only be ensured if the surface areas of the carpet with pole loops are very small. If the pole loop structure is to prevail, then the pile heights are to be reduced by a shear process. The low and hard pole loops then determine the pedaling comfort at a low level.

DE 43 12 235 A1 describes a method and a device for loop pile fabrics has been proposed on a weaving machine in connection auxiliary weft threads are inserted with known lancets. (To compare See also Hans Osswald: "The carpet industry", Melliand textile reports, 1965, page 123.) The pile threads selected for the pile weave are over this Auxiliary shots led and form larger pole loops.

The lancet groups arranged in one plane are articulated Guide boards equipped that can be involved in technical training. These controllable guide boards ensure that the auxiliary shots alternately to spread the respective pile loops the pile fabric be assigned to the upper fabric or the pile fabric of the lower fabric. After the weaving process is finished, both pile fabrics come off without Cutting process from each other.

Removing the auxiliary weft threads is optional. They can remain in the tissue while supporting the pole loops. But you can also look sideways the pile fabric can be removed so that the pile loops themselves are comfortable to walk on determine.

With such a double-pole weaving machine and such a method However, only those pile fabrics can be produced on their surface only pole loops are present. The alternating pattern Arrangement of pile legs, the fiber ends of which are directed towards the pole surface, and closed pole loops cannot be realized with this method.

US Pat. No. 3,289,706 describes a method and a double pile weaving machine has become known with which the pile is produced in extreme height by the fact that the pile handles before they change into the opposite basic goods Auxiliary shots on both sides of a lancet, which is assigned to a basic product, be stretched zigzag. This large pile leg length becomes free, when the lancet groups release the auxiliary shots. A pile thread pattern is not possible with this procedure. It is the same with this procedure impossible, patterned pile loops with pile legs about the same height to change.

We can state that there is no known method in the prior art that it enables pile legs and pile loops to be of the same and structurally variable Height can be arranged according to the pattern, without any of the pole types regarding its quality or variability is adversely affected.

DE 175 757 further describes a process for the production of double pile fabrics known, in the pile warp threads both pile loops and pile handles form. Pole loops and pile loops are always adjacent to each other and form together a sample point. The pile handles are separated in the usual way. Two pile fabrics are created. The pole rings are made using auxiliary shots stretched out by means of wires that extend into the area of the breast tree extend out at a distance from the base fabric.

One such procedure is for the manufacture of patterned pile fabrics that have larger areas without pole loops, not feasible. The auxiliary shots allow trouble-free separation of the pile handles in areas without loops not to. The wires leading up to the area of the breast tree cause a compression of the tissue and hinder trouble-free tissue withdrawal. The process, which has been known for a very long time, has therefore not even changed Approach approach.

• bei dem die Polschlingen und die Florschenkel eine ausreichende und annähernd gleiche Höhe bei optimaler Ausrichtung zur Poloberfläche besitzen
• bei dem das Trennen der Florhenkel in allen Bereichen zuverlässig gewährleistet werden kann und
• das bei zwei- oder mehrschütziger Arbeitsweise zweitourig, ohne zusätzliche Drehzahlbegrenzung realisierbar ist.

The object of the present invention is therefore to provide a method for producing a pile fabric with pile loops and pile legs arranged in any pattern according to the double-pile weaving method,

• in which the pile loops and the pile legs have a sufficient and approximately the same height with optimal alignment to the pile surface
• in which the separation of the pile handles can be reliably guaranteed in all areas and
• that can be implemented with two or more contactors, two-speed, without additional speed limitation.

This object is achieved by the method according to claim 1 solved. The pile legs and the pile loops are arbitrary on the pile surface can be arranged according to the pattern without the separation process of the pile handles of the Double pile fabric is hindered in some way. It is excluded, that the means for spreading the pile loops also spread the pile legs. The size of the pole loops is due to the choice of the dimensions of the lancets can be varied within the usual limits. For securing the almost uniform The height of the pile legs and the pile loops are in addition to the usual, balancing ones Shearing processes no additional operations required. It will Using the double pile weaving process, two of the same and high quality at the same time Pile fabric is produced, thus ensuring a high output of the weaving machine.

During the cutting process of the pile handles, both the auxiliary shots and also the vertex of the pile loops in terms of their position exactly outside of Movement range of the knife positioned so that the loop structure and the removal of the auxiliary shots is not affected by faulty disconnection processes becomes.

The method can be modified using conventional double carpet or Double pile weaving machines with a lancet arrangement without limitation of the usual working speed can be realized.

The implementation of the procedure with single-shot entry is in principle possible but for economic reasons (would be for a pile bond repeat at least four tours required) regularly not desired. The described In principle, the method also enables the combination with a sample Pile thread pattern on the base fabric and / or with a weft pattern.

With the fixation and tensioning of the auxiliary wefts by groin warp threads and the Removing the auxiliary shots from the tissues - according to claim 2 or in Art according to claim 3 - can with an optimized weaving process a uniform pile loop height across the entire width of the double pile fabric regardless of the pattern can be guaranteed.

The removal of the auxiliary weft threads according to claim 4 is simple can be reliably and automatically implemented.

Additional securing of the position of the auxiliary wefts in the area of the double pile fabric at a distance from the path of movement of the knife allow the Process steps according to claims 5 and 6. In the case of claim 5 can the leading warp threads after the separation process and after the Remove the auxiliary shots easily from the separated pile legs. This solution has particular advantages if there are patterns on the bottom or Firing patterns significantly determine the character of the pattern. The procedure according to claim 6 is recommended if larger pile areas in the pile fabric are provided.

An additional safety distance for the auxiliary weft threads is given by the guide guaranteed according to claim 7.

The use of the compartment-forming binding warp threads to guide the adjacent ones Weft insertion elements according to claim 8 prevents the weft insertion elements the adjacent guide sections or guide boards grind with sharp edges.

The modification of the method according to claims 9 and 10 can be done in the usual way Double-pile looms with limited modifications to some components realize.

At high working speeds, the design of the bindings follows Claim 11 high quality pile fabrics.

The implementation of the method according to claims 11, 12 and 13 ensures high productivity, good stability and alignment of the pile or pile elements in a wide pole density range.

The advantage of the method according to claim 14 is in addition to the high Productivity above all in additional design options for pile fabrics. So this modification also allows the production of patterns on the bottom (wrong Bouclé or shot pattern) in larger areas. Possibly. provided auxiliary shot slings and / or warp threads binding auxiliary shots alone be arranged on the bottom using pole loops. Do these auxiliary shot slings pass made of water-soluble fibers or very thin filaments at least in a subsequent, easily realizable work step the visible side through water or by means of controlled flames (scorching) be eliminated.

The double pile weaving machines according to claims 15 to 18 are special Suitable for carrying out the method according to the invention.

The arrangement of the strip trigger device according to claim 19 is suitable especially when larger pile loop-free areas are provided in a pile fabric and if large pole loops are part of the pattern.

The embodiment according to claim 20 in particular offers greater reliability in pile fabrics with a relatively low pile loop height.

Fig. 1

einen schematischen Querschnitt der Webzone entlang der Arbeitsrichtung einer Doppelflor-Webmaschine mit drei Schusseintragsebenen,

Fig. 2

einen Querschnitt durch ein Doppelflorgewebe, welches auf einer Doppelflor-Webmaschine gemäß Fig. 1 hergestellt wurde, im Bereich unmittelbar hinter der Anschlagebene,

Fig. 2a

eine Darstellung von Florhenkeln,

Fig. 2b

eine Darstellung von Florschenkeln,

Fig. 2c

eine Darstellung von Polschlingen,

Fig. 3

einen Querschnitt durch eine Webzone analog Fig. 1 für eine doppelschützige Doppelflor-Webmaschine,

Fig. 4

ein auf der doppelschützigen Doppelflor-Webmaschine gemäß Fig. 3 hergestelltes Doppelflorgewebe entsprechend Fig. 2

Fig. 5

einen Querschnitt durch die Webzone einer vierschützigen Doppelflor-Webmaschine in einer Darstellung gemäß Fig. 1,

Fig. 6

einen Querschnitt durch ein Doppelflorgewebe, hergestellt auf einer Doppelflor-Webmaschine gemäß Fig. 5,

Fig. 7

einen Querschnitt durch ein Doppelflorgewebe analog zu Fig. 2 und

Fig. 8

eine schematische Draufsicht auf die Webzone einer Doppelflor-Webmaschine mit mehreren Schusseintragsebenen, mit einer Schneidanordnung und mit einer Vorrichtung zum Entfernen der Leisten und Hilfsschussfäden nach der Schneidanordnung,

Fig. 9

einen Gewebequerschnitt analog zu Fig. 2 mit Kettfäden zum Abbinden und Führen der oberen Hilfsschussfäden über das Messer,

Fig. 10

ein Doppelflorgewebe nach Fig. 6 mit einem Kettfaden zwischen den oberen und den unteren Hilfsschüssen für das Führen der oberen Hilfsschüsse über das Messer und

Fig. 11

eine schematische Ansicht der Fachbildeelemente in Verbindung mit dem Hilfsschussabzug zwischen der Gewebeanschlagkante und dem Bewegungsbereich des Messers.

The invention will be explained in more detail below using exemplary embodiments. In the accompanying drawings:

Fig. 1

2 shows a schematic cross section of the weaving zone along the working direction of a double-pile weaving machine with three weft insertion levels,

Fig. 2

2 shows a cross section through a double pile fabric, which was produced on a double pile weaving machine according to FIG. 1, in the area immediately behind the stop plane,

Fig. 2a

a representation of pile handles,

Fig. 2b

a representation of pile legs,

Fig. 2c

a representation of pole loops,

Fig. 3

2 shows a cross section through a weaving zone analogous to FIG. 1 for a double-protection double-pile weaving machine,

Fig. 4

2 on the double-protective double-pile weaving machine shown in FIG. 3 according to FIG. 2

Fig. 5

2 shows a cross section through the weaving zone of a four-pronged double-pile weaving machine in a representation according to FIG. 1,

Fig. 6

5 shows a cross section through a double pile fabric, produced on a double pile weaving machine according to FIG. 5,

Fig. 7

a cross section through a double pile fabric analogous to Fig. 2 and

Fig. 8

1 shows a schematic top view of the weaving zone of a double-pile weaving machine with several weft insertion levels, with a cutting arrangement and with a device for removing the lasts and auxiliary weft threads after the cutting arrangement,

Fig. 9

2 shows a fabric cross section analogous to FIG. 2 with warp threads for tying and guiding the upper auxiliary weft threads over the knife,

Fig. 10

a double pile fabric according to FIG. 6 with a warp thread between the upper and lower auxiliary wefts for guiding the upper auxiliary wefts over the knife and

Fig. 11

is a schematic view of the compartment elements in connection with the auxiliary shot deduction between the fabric stop edge and the range of motion of the knife.

The basic principle of the present invention should first be based on the example of a three-guard double pile weaving machine according to FIG. 1 are explained. The three-armed Double-pile loom is equipped with shedding devices, the threads individually or in groups in a manner known per se in four can distribute superimposed levels.

The upper compartment level O and the upper middle compartment level Ma are in terms of Binding warp threads 223a and the filling chain 224a the upper base fabric 22a assigned. The lower subject level or sub-subject U and the lower middle subject level Mb are with regard to the binding warp threads 223b and the filling chain 224 assigned to the lower base fabric 22b.

The patterned pile threads alternate between the upper compartment O and the lower compartment U, if they form pile handles 226. Shall the pattern poles loop loops 225a, 225b, they change regularly between an outer compartment O or U and the respective middle level Mb or Ma.

The back wefts 221a and the inner wefts are in the weft insertion plane 15 222a of the upper basic goods 22a entered. The weft threads - namely the back shots 221b and inner shots 222b of the lower base fabric 22b - are entered through the weft insertion level 17.

Identical to the filling chain 224a, 224b, each basic product 22a, 22b several non-patterning pile threads - so-called dead poles - as dead pole strand TPa and TPb be involved. The pile threads of these dead pole strands TPa and TPb can are exchanged in the usual way for each of the patterning pile threads.

The middle weft insertion plane 16 is flanked by the top and bottom Lancet groups 14a, 14b. The lancet groups 14a, 14b are part of the lancet unit 14 mounted on the frame. Grip around the guide sections 145 the path of the weft insertion means 16, which are usually designed as gripper bars are.

The lancet groups 14a, 14b keep an alley 140 clear, which extends into the finished double pile fabric 2 extends. In the middle weft insertion level 16 thin auxiliary weft threads 231a and 231b are inserted which refer to the Support the inner edges of the lancets 14a, 14b and the pole loops 225a, 225b Form in the area of the tissue stop plane or edge A.

To ensure sufficient tension of the auxiliary weft threads, these are on both sides of the double pile fabric 2 in the plane of the alley 140 together with the last warp threads 232, 232 '; 232a, 232a '; 232b, 232b 'in strips 23, 23'; 23a, 23a '; 23b, 23b 'involved.

These strips 23, 23 'receive the tension of the auxiliary shots 231 across the Area of tissue stop edge A upright. (From here onwards Simplification in the description of general functions only the basic reference signs used.)

Slide behind the fabric stop edge A at a reasonable distance these auxiliary shots 231a, 231b over the free ends of the lancets 14a, 14b down. A sufficiently large, loose pole loop 225a, 225b is formed of the auxiliary weft threads 231a, 231b easily at a later time can be pulled out.

This pulling out of the auxiliary shots 231a, 231b from the pole loops 225a, 225b can and should begin immediately at the end of the lancets 14a, 14b when all auxiliary shots 231a, 231b in a common bar 23, 23 ' are tied until the knife 41 of the knife carriage 4 is reached be completed (see Fig. 11).

As a rule, however, the distance between the Tissue stop edge A and the one effective between the base fabrics Knife 41 of the knife carriage 4 is so small that it is not pulled out regularly and ended reliably until the path of the knife 41 is reached can be. Because of this, one has to remove these auxiliary shots 231a, 231b onto a working section behind the movement path of the knife 41 embarrassed.

So that the auxiliary weft threads 231a of the upper base fabric 22a in this case but not due to their gravity in the range of movement of the knife 41 arrive, it is necessary to use the auxiliary shots of the upper pile tissue 2a and lower pile fabric 2b in different slats 23a, 23a 'made of sliver warp threads 232a or strips 23b, 23b 'of strip warp threads 232b.

These strips 23a, 23a '; 23b, 23b 'hold their respective auxiliary weft threads 231a, 231b stretched across the entire width of the fabric. You secure in the presence a sufficiently large and distributed number of patterning pile loops the fabric width that the auxiliary shots are not in the range of motion of the Knife 41 arrive. Otherwise, accidents cannot be ruled out.

If there are not enough patterned pile loops in pattern areas made of pile legs, in pattern areas with patterns on the bottom or with weft patterns so-called auxiliary shot holding slings 225c are available in a reasonable manner To fix the distance below the upper base product 22a. These auxiliary shot slings 225c as well as patterning pole loops 225a, 225b bound. However, they consist of a very thin and / or in terms of Color and structure of neutral thread.

If you want to have a regular structure of pile fabrics 2a, 2b Auxiliary shot holding slings 225c can be dispensed with, especially for that Guide the auxiliary weft threads 231a to provide warp threads 229 or 228 that are exclusive tie with or between auxiliary weft threads (Fig. 9 or Fig. 10).

In the case of FIG. 9, the warp threads 229 are only with upper auxiliary weft threads bound. The warp threads 229 of a group can be made up of several Warp courses are distributed. This way you can save material and that It is easier to pull out the auxiliary weft threads 231. On the other hand, it is enough sufficiently tensioned auxiliary weft threads 231 when a support is on a section of one or more centimeters is done only once.

10 shows a second variant of the use of leading warp threads 228. Here, the warp threads 228 are individually between the upper and lower auxiliary shots 231a and 231b. In front of the area of the knife 41, these warp threads 228 are guided upwards over the guide means 33a Area of the knife 41 out. The auxiliary shots 231a (also 231b) slide over wire-shaped bars 331 also from the area of the knife 41 without hinder the cutting process. The last warp threads 232 become a shed formation with the help of special groin stems LSa, LSb; LSa 'LSb' (see Fig. 11) with a specialist representative 2321, 2321 ', 2321 "(Fig. 1, 3, 5).

In this context it should also be mentioned that the auxiliary weft threads 231a, 231b, which are subsequently removed from the pole loops 225a, 225b, 225c the base fabric 22a, 22b pulls out again, preferably of thin synthetic material.

Fig. 2 shows an example of a fabric that is on a three-protection double pile weaving machine 1 was produced. In each tour there is one Base shot 221a, 222a and 221b, 222b of the upper and lower goods and an auxiliary shot 231a, 231b entered.

The basic shots 221a, 222a and 221b, 222b are in one tour in a base fabric 22a, 22b once as a back weft 221a or 221b and in the other base fabric 22b, 22a integrated as an inner weft 222b, 222a. The auxiliary weft 231b, 231a of a base fabric is always simultaneously with one Inner weft 222b, 222a of the same basic fabric 22b, 22a entered.

The auxiliary shot holding slings 225c do not need in every warp course and in every tour. Depending on the division in the weft direction Such auxiliary shot holding slings 225c can only be used in every third or even only plan in every tenth warp course. It is possible in successive Weft insertion cycles per basic product these auxiliary weft holding slings 225c in different warp courses, so that a streaky effect if necessary can be avoided and all auxiliary weft threads 231a away from the knife 41 being held.

The separation of the two basic goods 22a, 22b by the knife 41 of the knife carriage 4 takes place in the area between the tops of the relaxed pole loops 225a, 225b of the upper and lower base fabrics 22a, 22b. The Knife 41 separates the tavern! the pile handle 226 according to FIG. 2a and forms Pile leg 2261 according to FIG. 2b, which, for. B. according to the pattern between the The apices of the pole loops 225b are positioned in FIG. 2c. To secure a sufficient distance of the auxiliary shots 231a from the knife 41 Last raised by means of guide means 33. The lower auxiliary shots 231b lower due to their gravity. You can do this also support by guide means 33 and 33b.

The leadership of the binding chain 223 in the training can be more common and proven Shape. It is important that over a certain section in the direction of the shot all basic shots 221 ... and 222 ... sufficient at the respective Basic goods 22a, 22b are held and the pile handles 226 and the pile loops 225a, 225b are aligned with weft threads in such a way that they essentially protrude perpendicularly from the respective basic goods 22a, 22b. The type of basic bond is essentially freely selectable.

One should especially guide the binding chains 223 during the formation of the subject if there is no filling chain 224a, 224b for guiding the weft insertion means 16 is available, position it so that e.g. B. the gripper bars at a distance from any existing guide edges on the lancet unit 14 being able to lead.

3 shows a weaving unit with two weft insertion levels 11, 12. That of the gripper bars in the weft insertion plane 11 and the weft insertion plane 12 registered shots are countered with the help of the sley 13 the fabric stop edge A.

The warp threads are in the usual manner in the upper compartment level O ', in the lower compartment level U 'and positioned in a middle compartment level M.

The two weft insertion levels 11, 12 alternately stand for the Entry of a base shot 221a ', 222a' or 222b ', 221b' into a first base fabric and for the insertion of an auxiliary shot 231b, 231a for the opposite one Base fabric available. That is, it becomes a basic shot 222b ', 221b' e.g. B. entered in the lower basic product 22b ', then receives the upper base article 22a 'its auxiliary shot 231a' and can loop loops 225a ' form. In contrast, the upper base fabric 22a 'receives a base shot 221a ', 222a' then the auxiliary shot 231b is assigned to the lower base product 22b '. The upper and lower weft insertion levels 11, 12 are therefore to assign a respective weft changing device (not shown).

It is also necessary that the lancet groups 14a ', 14b' each have guide boards 141, 142 are assigned to either the shot of the top Weft insertion plane 11 or through the lower weft insertion plane 12 registered auxiliary weft thread 231a, 231b by means of representative 1411 or specialist representative 1421 into the alley 140 between the lancet groups 14a 'and 14b' to lead.

The last warp threads 232a, 232b lead a specialist representative 2321 'or 2321 "in this way from that they each together with the auxiliary shots 231a, the upper Basic fabrics 22a are assigned or together with the auxiliary wefts 231b, which are assigned to the lower base fabric 22b, a strip 23a or 23b form.

The double pile fabric 2 ′ resulting from this mode of operation is shown in FIG. 4 shown. To ensure a corresponding fabric density with an appealing Productivity becomes the patterning pile handles 226 'or pile loops 225a', 225b 'in each basic commodity alternately a back shot 221a', 221b 'and then assigned to an inner shot 222a ', 222b'. Even with this arrangement the pile handles 226 'between the two levels of auxiliary shots 231a and 231b separately. So that the auxiliary shots 231a in the area of the upper base fabric 22a are not destroyed before being removed from the pole loops 225a, it is also necessary here, so-called auxiliary weft holding slings made of thinner threads 225c.

A double pile weaving machine with four weft insertion levels one above the other 15, 16, 161, 17 for carrying out the method according to the invention 5 shows the warp threads in such a double pile weaving machine due to the well-known subject elements on five subject levels O ", U", Ma ", Mb "and Z distributed.

The entry of the auxiliary weft threads 231a and 231b ensures the middle ones Weft insertion levels 16, 161. For guiding the respective auxiliary weft threads 231a, 231b into the alley 140 between the two lancet groups 14a "and 14b "ensure the two guide boards 143, 144, which have separate Fachbildeelemten, z. B. traction means 1410 and 1420 (see. Fig. 3), subject-forming in the required positions can be spent.

The existing weft insertion levels 15, 16, 161, 17 ensure that in each tour a back shot 221a "and 221a" 'for tying pile handles 226 "and / or pole loops 225a", 225b "is available. It is possible to be symmetrical Binding with high pile density in the pile area and also in the pile loop area to design.

Another possibility of patterning in this production variant is in the formation of patterns at the bottom. Here the colored pole loops 227a ", 227b "inside over the respective inner sections 222a", 222b ", so that on a patterned structure of goods in a lower area of the pattern can be guaranteed.

In the areas of this pattern on the bottom it is of course just as in the Areas where pile loops are formed are necessary for the top basic fabric 22a "associated auxiliary shots 231a reliably above the knife 41 lead and thus prevent these auxiliary shots 231a from being destroyed before they are pulled out sideways.

With the four-guard version of the weaving machine, it is also possible to choose between the auxiliary shots 231b of the lower fabric 22b "and the auxiliary shots 231a of the upper fabric 22a "to insert an additional, stretched warp thread 228 - cf. FIG. 10 - the one in the range of motion of the knife 41 together with the upper one Pile fabric 2a or better with additional means 33, 33a, 331 separately is pulled away at the top. This additional warp thread 228 is alternately in to the middle specialist levels Ma "and Mb" and leads a specialist representative 2281.

In all variants of FIGS. 2, 4, 6 and 10, the auxiliary shots 231a, 231b on both sides laterally outside the double pile fabric 2, 2 ', 2 "with the help of Last warp threads 232a, 232b (see FIG. 7) in two mutually independent Strips 23a, 23a 'and 23b, 23b' tied. This last warp threads 232 ensure within the double pile fabric 2, 2 ', 2 "the necessary tension the auxiliary weft threads 231a, 231b.

After the upper 22a has been separated from the lower basic product 22b, is on two pile fabrics 2a and 2b, which are continued after the separation process, initially a bar 23a 'or 23b' separated (see FIG. 8). The other bar 23a, 23b laterally, together with the auxiliary weft threads 231a, 231b pulled out respective pile fabric.

The manner of this process is described below with reference to FIG. 8 for the lower pile fabric 2b described. The double pile fabric 2, 2 ', 2 "- hereinafter only referred to as double pile fabric 2 - is initially horizontal up to the take-off rollers 31 and 32 are filled with needles. For the leadership of associated strips 23b, 23b 'is on both sides of the lower take-off roller 32 a collar 320, 320 'is provided. Pressure rollers 321, 321 'can the strips 23b, 23b 'on the collar 320 non-positively. With one of these pressure rollers 321 ' For example, a separating knife 5 can be connected to separate the auxiliary weft threads 231 from the Strip 23b 'separates.

The knife carriage 4 is - as is usual with double-pile weaving machines - in one certain arrangement to the two take-off rollers 31, 32 guided and moved moving parallel to them at high speed in changing directions Draw-off rollers 31, 32. This conventional unit does not require any special description.

The strips 23b, 23b 'and the auxiliary shots 321 are removed by means of Last deduction 6 - right - and with last auxiliary firing deduction 7 - left. The of the pressure rollers 321, 321 'clamped to the respective collar 320, 320' Strips 23b 'are on one side (here on the right) of the base fabric 22 from the Auxiliary shots 231 separated by knife 5 and the bar 23b 'over the corresponding one Strip trigger 6 fed to a waste container.

The bar 23b (left), on which the auxiliary weft threads 231b remain, is by means of Last pull-off rollers 71 pulled away laterally from the pile fabric 2b. The auxiliary weft threads 231b follow them to the same extent. To reduce the overall width the weaving machine, however, is useful after a certain draw length the auxiliary weft threads 231b with the aid of special auxiliary weft take-off rollers 72 to be pulled out of the pile fabric 2b and fed to a waste container.

Another variant of the tension of the auxiliary weft threads 231a and 231b is shown in FIG Fig. 7 shown. Here the auxiliary weft threads 231a and 231b bind with last warp threads 232 together a bar. This procedure can be implemented if the auxiliary weft threads 231a, 231b before reaching the trajectory of the knife 41 can already be removed from the double pile fabric 2.

This process is u. a. shown schematically in FIG. This figure shows one Top view of the web arrangement. The middle section is all for manufacturing of the double pile fabric necessary warp threads, namely the binding warp threads 224, the fill warp threads 224, the dead poles TPa of the upper base fabric 22a, the dead poles TPb of the lower base fabric 22b and also the warp threads 228 fed. These warp threads are grouped in the usual way by means of shafts SM or individually by means of strands of a jacquard machine JM a controlled Subject subject that leads to the production of the double pile fabric 2. in The lancet groups 14a, 14b are also arranged in this central region.

There are separate ones in the area of the auxiliary warp threads 232, 232a, 232, or 232 ', 232a', 232b ' Shed formation facilities arranged this auxiliary warp threads in the can move as necessary. This is what special "strip machines" can do, special lasts LS, LS 'or LSa, LSb or LSa' LSB 'or can also be individual strands moved by the JM jacquard machine.

After completion of the double pile fabric (2) on the fabric stop edge A, the right bar 23 'is separated by means of knife 5 and by means of a bar deduction 6 'conveyed into the waste container. At the same time the left bar 23 is by means of Last auxiliary shot trigger 7 'pulled away to the side. The way of working corresponds to Description of Fig. 7. The removal of the auxiliary shots 231 is complete, before the double pile fabric 2 reaches the path of the knife 41.

LIST OF REFERENCE NUMBERS

1

Webzone

11

Weft insertion means

12

Weft insertion means

13

batten

14

Lancet unit

14a, 14b

Lancets / lancet groups (three-pronged)

14a ', 14b'

Lancets / lancet groups (double protection)

14a ", 14b"

Lancets / lancet groups (four-pronged)

140

alley

141, 142

routing boards

1410, 1420

traction means

1411, 1421

Fachvertritt

14a ", 14b"

Lancets, groups of lancets

143, 144

routing boards

1431, 1441

Fachvertritt

15

Weft insertion means

16

Weft insertion means

161

Weft insertion means

17

Weft insertion means

2, 2 ', 2 "

double-pile

2a, 2a ', 2a "

Pile fabric (outer fabric)

2b, 2b ', 2b "

Pile fabric (bottom fabric)

22a, 22a ', 22a "

base fabric

22b, 22b ', 22b "

base fabric

221a, 221a ', 221a "

Back shots, ground shot

221b, 221b ', 221b "

Back shots, ground shot

222a, 222a ', 222a "

Indoor shot, ground shot

222b, 222b ', 222b "

Indoor shot, ground shot

223a, 223a ', 223a "

Binding warp threads (upper goods)

223b, 223b ', 223b "

Binding warp threads (bottom fabric)

224a, 224a ', 224a "

Filling chain (upper goods)

224b, 224b ', 224b "

Filling chain (underware)

225a, 225a ', 225a "

Pole loops (upper goods)

225b, 225b ', 225b "

Pole loops (bottom fabric)

225c

Auxiliary income-retaining loop

226, 226 ', 226 "

Florhenkel

2261, 2261a, 2261b

Florschenkel

227a ", 227b"

Sample pole at the bottom

228

warp

229

warp

23, 23 '

Groin, groin fabric

23a, 23a '

Groin, groin fabric

23b, 23b '

Groin, groin fabric

231a, 231b

auxiliary income

232, 232a, 232b (')

Leistenkettfäden

2321, 2321 '

Fachvertritt

3

tissue deduction

31

off roll

32

off roll

320, 320 '

Federation

321, 321 '

pressure roller

33, 33a, 33b, 331

guide means

4

blade slide

41

knife

5

knife

6, 6 '

afford deduction

7, 7 '

Make auxiliary income deduction

71

Strips off rolls

72

Auxiliary shot-off rolls

TPa, TPa ', TPa "

Dead poles, dead pole strand

TPb, TPb ', TPb "

Dead poles, dead pole strand

M, Ma, Mb, Ma ", Mb"

Middle subject (level)

Z

Central subject (level)

O, O ', O "

Upper compartment (level)

U, U ', U "

Sub-subject (level)

A

stop edge

JM

Jacquard

SM

dobby

LSa, LSb; LSa ', LSb'

Leistenschäfte

Claims (20)

Process for the production of patterned pile fabric on a double-pile weaving machine,
whereby a pile pile fabric is produced from a double pile fabric with two base fabrics connected by pile loops by separating the pile loops (226) with a knife (41) that can be moved parallel to the base fabrics (22a, 22b), the pile loop (225a, 225b) and pole leg (2261),
the pile loops (225a, 225b) forming the pile threads between a base weft (221; 222) and an auxiliary weft (231a, 231b) guided by lancets (14a, 14b) at a distance from the respective base fabric (22a, 22b),
the auxiliary wefts (231a, 231b) are struck in a lane (140) between the lancet groups (14a, 14b) assigned to the two base fabrics (22a, 22b) and removed after the double pile fabric (2) has been completed,
characterized in that the auxiliary wefts (231a, 231b on both sides of the double pile fabric (2) in the plane of the alley (140) are integrated into strips (23, 23 '; 23a, 23a'; 23b, 23b ') and are tensioned between them and
that the auxiliary shots (231a, 231b) and their strips (23, 23 '; 23a, 23a'; 23b, 23b ') after sliding off the lancets (14a, 14b) by means of separate guide elements (33, 33a / b, 331, 7 ') outside the range of movement of the knife (41). A method according to claim 1, characterized in that the auxiliary weft threads (231a, 231b) on the side of the double pile fabric (2) are woven exclusively with last warp threads (232a, 231b) to form lasts (23, 23 ') and
that the auxiliary weft threads (231a, 231b) are removed from the double pile fabric (2) before the range of movement of the knife (41) is reached. A method according to claim 1, characterized in that the auxiliary weft threads (231a, 231b) of the upper pile fabric (2a) and the lower pile fabric (2b) by means of last warp threads (232a, 232a '; 232b, 232b') each separately, laterally on both sides of the double pile fabric ( 2) woven into strips (23a, 23a '; 23b, 23b') and
that the auxiliary shots (231a, 231b) of both pile fabrics (2a, 2b) are removed after passing through the range of motion of the knife (41). Method according to one of claims 1 to 3, characterized in that the auxiliary wefts (231a, 231b) for the purpose of their removal from the double pile fabric (2) or from one of the two pile fabrics (2a, 2b) between one of the strips (23 ', 23a ', 23b') and the double pile fabric (2) or one of the pile fabrics (2a, 2b) separately and together with the respective other strip (23, 23a, 23b) are pulled laterally out of the pile loops (225a, 225b, 225c). A method according to claim 1, characterized in that at least in areas of the double pile fabric (2) free from patterning pile loops (225a) during the manufacture of the upper base fabric (22a) either tie individual warp threads (229) alternately from choir to choir or at greater intervals exclusively with the auxiliary wefts (231a) or between the auxiliary weft threads (231a) of the upper pile fabric (2a) and the auxiliary weft threads (231b) of the lower pile fabric (2b) an extended warp thread (228) is guided and that the warp threads (229, 228) are guided together with the auxiliary weft threads (231a) at a distance above the range of movement of the knife (41). A method according to claim 1, characterized in that at least in areas free of patterning pile loops (225a, 225b) during the manufacture of the upper base fabric (22a) auxiliary weft holding loops (225c) from threads of neutral color and / or of a small thickness in the manner of patterning pile loops be formed. Method according to Claim 1, 3 or 5, characterized in that at least the strips (23a, 23b) of the upper pile fabric (2a) and / or the warp threads (228, 229) while maintaining their tension by means of guide elements (33, 33a, 331) at a distance from the path of movement of the knife (41). A method according to claim 1, characterized in that the binding warp threads (223a, 223b) of the two base fabrics (22a, 22b) for shed formation are assigned to a middle shed (M; Ma; Mb; Ma ";Mb"; Z) and are positioned in such a way that they touch the path of a weft insertion member of the weft insertion planes (11, 12; 15, 16, 161, 17). A method according to claim 1, characterized in that the double pile weaving machine is equipped with a three-position jacquard machine and has two superimposed, simultaneously activated weft insertion elements in three weft insertion levels (15, 16, 17) and
that in the two weft insertion levels (11, 12) in each tour one back or inner weft (221a ';222a'; 221b ', 221a') for one of the base fabrics (22a ', 22b') and an auxiliary shot (231b; 231a) of the respective other base fabric (22b ';22a') is entered. Method according to Claim 1, characterized in that the double-pile weaving machine is equipped with a three-position jacquard machine and has two weft insertion planes (11, 12) which are arranged one above the other and can be activated at the same time and
that in the two weft insertion levels (11, 12) in each tour one back or inner weft (221a ';222a'; 221b ', 221a') for one of the base fabrics (22a ', 22b') and an auxiliary shot (231b; 231a) of the respective other base fabric (22b ';22a') is entered and that the registered auxiliary shots (231a, 231b) are guided into the alley (140) between the lancet groups (14a ', 14b') by means of guide plates (141, 142) flexibly articulated on the lancets (14a ', 14b'). Method according to claim 9 or 10, characterized in that the pile loops (226 ') and pile loops (225a', 225b ') per base fabric (22a'; 22b ') alternate from tour to tour, first on a back weft (221a, 221b) and then bound to an inner weft (222a ';222b'). Method according to claim 1, characterized in that the double-pile weaving machine is equipped with a four-position jacquard machine and has three weft insertion levels (15, 16, 17) which are arranged one above the other and can be activated at the same time,
that in each of the outer weft insertion levels (15, 17) in each tour one back or inner weft (221a, 221b, 222a, 222b) for each of the base fabrics (22a, 22b) and An auxiliary shot (231a, 231b) is always entered in the middle weft insertion plane (16), that the auxiliary shots (231a, 231b) are guided into the alley (140) between the lancet groups (14a, 14b) by means of guide sections (145) which are fastened to the lancets (14a, 14b) and which grip around the middle weft insertion plane (16). A method according to claim 12, characterized in that the pile loops (226) and pile loops (225a; 225b) in each grunge weave (22a, 22b) in each tour tie over a back weft (221a, 221b). A method according to claim 1, characterized in that the double-pile loom is equipped with a five-position jacquard machine and has four weft insertion levels (15, 16, 161, 17) which are arranged one above the other and can be activated at the same time,
that in the two outer weft insertion planes (15, 17) in each tour a back weft (221a, 221b) is entered in each of the base fabrics (22a ", 22b"),
that in the two middle weft insertion planes (16, 161) an inner weft (222a, 222b) for one of the base fabrics (22a ", 22b") and an auxiliary weft (231a, 231b) for this same base fabric are inserted alternately and
that the registered auxiliary shots (231a, 231b) of the middle two weft insertion planes (16, 161) by means of guide plates (143, 144) flexibly articulated on the lancets (14a ", 14b") into the alley between the lancet groups (14a ", 14b") be performed. Double pile weaving machine
for the production of double pile fabrics (2) with areas of pile handles (226) and areas of pile loops arranged according to the pattern,
with at least two weft insertion levels (11, 12; 15, 16, 17) that can be activated at the same time and can be assigned to a weaving zone (1),
with knife (s) (41) for separating the pile handles (226) between the two base fabrics (22a, 22b) of the double pile fabric 2 and
with at least one jacquard machine (JM) for pattern-based control of choirs of patterning threads per warp course,
characterized in that lancet groups (14a, 14b) are arranged in the weaving zone (1) which slide with their outer guide surfaces on the weft threads (222a; 222b) of the respectively adjacent base fabrics (22a, 22b) and an open one in the working direction between them Limit alley (140),
that the lancet groups (14a, 14b) are assigned guide elements (guide boards 141, 142; 143, 144; guide sections 145) for guiding auxiliary weft threads to be attached by means of the drawer (13) into the alleys (140),
that laterally, on both sides of the shed formation zone for the double pile fabric (2) shed formation elements (e.g. inguinal shafts LSa, LSa '; LSb, LSb') for inguinal warp threads (232, 232a, 232b) are arranged, which alternate above or below auxiliary weft threads ( 231; 231a, 231b) can be positioned, and
that means (last trigger 6, last auxiliary weft trigger 7) for removing the lasts and the auxiliary weft threads (231; 231a, 231b) connected to the last warp threads (232; 232a, 232b) from the double pile fabric (2) or from the pile fabrics (2a, 2b ) are provided. Double pile weaving machine according to claim 15, characterized in that it is equipped with two weft insertion levels (11, 12) and
that the lancet groups (14a ', 14b') are provided with articulated guide plates (141, 142) which can be moved to form a compartment over at least one weft insertion plane (11; 12). Double pile weaving machine according to claim 15, characterized in that it is equipped with three weft insertion levels (15, 16, 17) and
that the lancet groups (14a, 14b) are provided with guide sections (145) with which they can be positioned fixed to the frame on both sides of the middle weft insertion plane (16) in the area of the shed. Double pile weaving machine according to claim 15, characterized in that it is equipped with four weft insertion levels (15, 16, 161, 17) and
that the lancet groups (14a ", 14b") are provided with articulated guide plates (143, 144) which can be moved to form a compartment over at least one weft insertion plane (16; 161). Double pile weaving machine according to claim 15, characterized in that a shedding device (e.g. a pair of last heald frames LS) for last warp threads (232) of both pile fabrics (2a, 2b) is arranged on either side of the shed formation zone for the double pile fabric (2) and
that the means (last trigger 6, last auxiliary weft trigger 7) for removing the last (23, 23 ') and the auxiliary weft threads (231; 231a, 231b) from the double pile fabric (2) between the fabric stop edge (A) and the path of the Knife (41) are arranged. Double pile weaving machine according to claim 15, characterized in that to the side, on both sides of the shed formation zone for the double pile fabric (2) shed formation devices (e.g. two pairs of fillet shafts LSa, LSa ', LSb, LSb') each for fillet warp threads (232a) of the pile fabric ( 2a) and for last warp threads (232b) of the pile fabric (2b) are arranged and
that the means (last deduction 6, last auxiliary weft deduction 7) for removing the last (23, 23 ') and the auxiliary weft threads (231; 231a, 231b) on the one hand from the pile fabric (2a) and on the other hand from the pile fabric (2b) in Working direction according to the path of movement of the knife (41) are arranged.

Images