EP1154057A2 - Terry loom - Google Patents

Abstract

At the loom for weaving terry fabrics, the band of pile warp yarns (15) is led over a deflection (26) to form a pile warp reserve in front of the intersection point with the band of ground warps (1), in the direction of travel. The pile yarn deflection compensates for the yarn length on forming the pile loops and/or as the shed changes. The terry fabric loom has a deflector (22) for the pile warps at the opposite side of the ground warps to the pile warp feed (16,17), as at least one rotating deflection linkage rod with a number of support mountings across the loom width, with spring pliability and adjustment. The band of pile warps form an obtuse angle (29) with the ground warps where they intersect, in the direction of travel. Or they can meet at an acute angle The bands of pile warps and ground warps have separate warp monitors (18,30) on separate planes, accessible freely from the side of the loom. At least the pile warp monitor is on a horizontal plane (34). The pile warp reserve length is formed by at least one sprung deflection shaft or deflection plate. The deflector can be on an axial shaft, with a keyed support lever (24). The shaft has a drive to give a freely programmed setting movement using a reversible electromotor, or a rotating cam disk acting on a cam follower (38).

Description

The invention relates to a terry weaving machine with a first device for Delivery of a basic warp thread sheet and a second device for delivery at least a pile of warp threads, with fabric threading agents and with compartment-forming elements for the Warp threads.

The technical elements are weft insertion means and weft attachment means assigned to the weft threads initially at a predetermined distance Enter from the web line or the edge of the goods (partial stop) and then the registered weft threads in groups at the stop edge, i.e. the edge of the goods (Full or group stop). When executing this group attack, the The warp thread tension is lowered and the warp thread is released, so that the warp threads are closed Loops are set up while the weft threads are held between the tensioned Basic warp threads slide until they are attached to the goods edge.

The terry weave, which is only outlined in its basic features, is a well-known one Weaving technology, which is described, for example, in the book "WEBEREI Verfahren und Maschinen für die Fabric production "by Dipl.-Ing. J. Schneider, Springer-Verlag Berlin / Göttingen / Heidelberg 1961, pages 17, 277.

A typical example of a terry weaving machine is known from DE-PS 2225604, which also illustrates the basic structure of such a terry weaving machine. The basic warp threads are let down from a basic thread warp beam and over one spring-loaded spanning tree redirected to the horizontal weaving plane in which it is connected to the The pile warp threads are united by one arranged above the weaving plane The pile thread warp beam is lowered. The pile warp threads are spring-loaded by their own Spanning tree led, which is arranged above the basic warp thread sheet, over the Weaving width extends and the pile warp threads from above, essentially tangentially, into the Basic warp thread family initiates. The basic warp threads and the pile warp threads run in the Warp thread guards arranged at the weaving level, behind which they jointly form technical training elements run through in the form of healds, from there through the reed or reed itself to extend to the fabric edge that forms the so-called stop edge. That of the Healds have a loom that is patterned with the tip of its front compartment the stop edge and ends with the tip of its rear compartment in the range of Support rods of the warp thread monitor common for the basic and pile warp thread coulters. That with the weft insertion means, for example in the form of no further illustrated drapery interacting reed performs a back and forth Weft stroke movement of constant amplitude, which in the shed registered weft threads first in the partial stop position at a distance from the The stop edge brings and then the partially wound wefts in groups to the Stop edge strikes. This is controlled by a so-called terry toweling eccentric Breastpiece moves towards the reed, so that the reed is the full or group stop of the Can weft threads to the stop edge. During this movement of the breast tree the warp thread coulter is held taut by the spring-loaded tension boom. Since that Whole tissue is moved, one speaks of a "tissue control" for loop formation the pile threads.

When merging the pile warp sheet with the base warp sheet can Problems arise in that adjacent pile warp threads when lowering the Hang the pile warp beam together or partially wrap around each other, which in turn it is favored that the pile warp thread tension for loop formation at the group stop must be lowered. There are types of yarn due to their nature, structure and the fiber material they contain has a particularly strong tendency to Have "cling". However, interrelated pile warp threads get into one with the basic warp threads common warp thread monitor device or even up to the rear compartment and on the healds, there is a risk of warp thread breaks or at least Web errors occur. The correction of warp thread breaks in the area of the back pocket is difficult because of the warp thread monitors and the one between them and the tension roller for the warp thread area lying the warp thread area are difficult to access on the warp beam side because it through the practically to the weaving level, acting like a "curtain" The pile warp threads are covered. The operator must remove a Reach through the warp thread break between the pile warp threads and the one another Warp thread ends to be tied by means of a wire hook or another suitable Search tool. Since the warp thread monitors are in an area of the rear compartment, in which the pile of warp threads at a small acute angle to the weaving plane into the When the basic warp thread coulter comes in, there is a relatively strong back and forth in the technical training Movement of the pile warp threads in the areas of the pile warp guard, which at sensitive pile warp threads is undesirable. Because of this arrangement of the Warp stop motion directly in front of the area of the rear compartment, also affect Warp thread movements strongly affect the pile warp guard slats at the group stop, with the result that forces occur in the pile warp threads that affect the loop formation process counteract.

While in the terry weaving machine known from DE-PS 2 225 604 Group stop for tissue control only the chest tree is moved while the Warp thread tension of the base warp thread coulter by the spring-loaded assigned to it Spanning tree is maintained, for example from EP 0 768 407 A1 Terrycloth weaving machine is known in which the match tree for tissue control Basic warp thread coulter and the fabric feed roller inevitably via a linkage are coupled to one another so that together they form the looping necessary Execute relative movement to the stop position of the reed. By a controlled one Interfering with this coupling, the pile height can be changed according to the pattern, like this EP 0 979 891 A1 is known. This also works with these terry weaving machines The pile warp sheet is above the weaving plane and the base warp sheet arranged, spring-loaded dancer shaft at a small acute angle from above the basic warp thread coulter, the pile warp threads only in the area of the rear compartment penetrate between the base warp threads.

At the pile warp thread length required for loop formation at the group stop To provide is a terry weaving machine known from DE 196 26 417 A1 Deflection rod provided for the pile warp threads, which with a pile warp tensioning element in Shape of a tension roller is coupled and this in the thread running direction Polkettfadenspannorgan is arranged in such a way that a substantially the axis of rotation of the Deflector facing deflection point for the pile warp threads is formed. This will help the the looping tension of the pile warp threads compensated. This one too Terrycloth weaving machines run the pile warp threads from above under a small, pointed one Angle to the weaving plane, coming directly from and on the pile warp tensioning element then almost parallel to the weaving plane, only in the back compartment between the Basic warp threads. In another terry weaving machine known from EP 0 257 857 the pile thread warp beam is arranged at the bottom, while the base thread warp beam is at a distance is stored above the web level. However, this does not change the basic principles above-described conditions of known terry weaving machines. The pile warp threads run in the area of the rear compartment between the base warp threads, the warp thread monitors for both warp thread systems are arranged on the rear compartment and of pile and basic warp threads run through together. The basic thread warp beam and the fabric are at this terry loom is driven at constant speed during the Basic warp thread discharge is controlled depending on the warp thread tension.

While the previously described weaving machines, as explained, with the so-called Fabric control when looping work, there are also terry looms, too which the loop or pile formation takes place by means of the so-called web shop control, such as this, for example, in EP 0 298 454 B1 and in the aforementioned specialist book "WEBEREI", ok P. 277. The same applies to these terry weaving machines The above.

Starting from this prior art, the invention is based on the object to create a terry weaving machine that is characterized by higher operational safety and better Operability distinguishes, so that the downtimes are reduced and thus the Goods output will be increased.

To achieve this object, the terry loom according to the invention has the Features of patent claims 1 and 16.

The fact that the pile warp thread sheet outside of the rear compartment through the When the base warp thread is carried out, a crosshair is created, which ensures reliable separation the individual pile warp threads or pile warp thread groups from each other. Dependent the weaving pattern either makes the individual healds impeccable individual pile warp threads separated from each other or groups in repetition (from maximum usually 2 threads), whereby the threads are also one above the other in such a group can. Because of the crosshairs formed, a warp thread break in the area of the Easy mastery of the rear compartment and no warp beam side or fabric take-off side Resolve difficulties.

The terry loom expediently has deflection means for the Pile warp threads on that of the delivery device for the pile warp yarn sheet opposite side of the base warp yarn sheet are arranged. This deflecting means may at least have a deflecting rod over which the pile of warp threads is guided. The deflecting rod can be designed as an articulated rod, which extends several times over the weaving width is stored and supported. The deflection rod can be used to keep the frictional forces low be rotatably mounted, as may also be expedient, the deflecting rod resilient to store and arrange adjustable if necessary.

Depending on the spatial conditions and the structure of the weaving machine the arrangement can be made such that the pile warp and the Basic warp thread coulter at the crossing point, seen in the thread running direction, a blunt or enclose an acute angle with each other, the two warp thread groups can also cross at an angle of about 90 °.

This warp thread guide with the formation of a cross hair between the The pile warp and the basic warp threads allow the pile warp threads and the To assign a separate warp thread monitor to the pile warp thread group, which by at least one machine side, i.e. freely accessible on the warp beam side or fabric side are arranged. The warp thread monitors for the basic warp thread coulter and the Warp thread monitors for the pile of warp threads are arranged on two different levels accessibility, which generally improves accessibility even further. In particular can at least the pile warp thread in the area of the pile warp guard in a Be essentially horizontal level. Just by the arrangement of the pole and The basic warp thread monitor is designed in two different levels Warp thread breakage removal very easy to use. Because of the between the pile warp threads and the basic warp threads formed crosshairs can namely a warp thread break in Easy control of the rear compartment area and simple by the operating personnel remedy. At the same time by the existing at the crosshair deflection The pile warp threads achieved a strong reciprocation of the pile warp threads in the area of the warp thread monitor is avoided. The pile of warp threads is conveniently in an area in the thread running direction before the crossing point with the Basic warp thread array lies over a device for forming a pile warp thread reserve passed, the a pile warp length compensation in the loop formation and / or in the Change of subject causes. This device for forming a pile warp thread reserve can at least one resiliently mounted, partially from the pile warp threads have wrapped thread length compensation element, for example a is resiliently mounted deflection rod or a resiliently designed and / or mounted Has thread deflection plate.

The described guiding of the warp threads allows the resulting pile warp thread length for loop formation in terry weaving with fabric control or terry weaving with store control in such a way that the pile warp tension before Group stop is lowered and the spring-loaded deflection rod or that Spring plate-like deflection plate partially absorb the pile warp thread length. This will achieved that the group stop on the Polkettwächterlamellen is no longer so strong acts so that thread tensile forces, which counteract the loop formation process, be minimized.

According to independent claim 16, the object is achieved in that the deflecting rod connected to the levers is pivotally driven about the horizontal axis by at least one controlled drive means during the partial displacement of the terry goods.
Thus, while the subject of the invention according to claims 1 to 15 assumes, among other things, to arrange the deflecting rod in a resiliently pivotable manner about an axis, that is to say to realize an uncontrolled tension compensation in the pile warp thread array with the deflection bar, the invention provides according to claim 16 for tension compensation during the Realize moving of the fabric in a controlled manner, namely controlled and freely programmable.
To this end, an embodiment of the invention provides that the horizontal axis is a rotating shaft with which at least one electromotive drive, which is reversible in its direction of rotation, is operatively connected.

This drive sets the deflection bar in a controlled pivoting movement via the support levers connected to the horizontally aligned shaft. The controlled pivoting movement of the deflecting rod keeps the pile warp thread tension at a desired level during the partial shifting of the goods after the so-called group stop.
As a result, the pile loops formed are not pulled out of the fabric at all and not partially.

In a further embodiment of the invention, the controlled pivoting movement is provided of the deflecting rod by realizing that the horizontally aligned shaft suitable means is operatively connected to a rotary driven cam. The drive the cam can be derived from the main drive shaft of the loom or be an electromotive drive that is independent of the main drive of the weaving machine.

Fig. 1

eine Frottierwebmaschine gemäß der Erfindung im axialen Schnitt in einer Seitenansicht,

Fig. 2

eine Jacquard-Frottierwebmaschine gemäß der Erfindung in einer Darstellung entsprechend Fig. 1,

Fig. 3

die Jacquard-Frottierwebmaschine nach Fig. 2 in einer abgewandelten Ausführungsform und in einer Darstellung entsprechend Fig. 1,

Fig. 4

die Frottierwebmaschine nach Fig. 1 in einer abgewandelten Ausführungsform und in einer Darstellung entsprechend Fig. 1,

Fig. 5

einen Ausschnitt aus der Frottierwebmaschine nach Fig. 4 in vergrößerter Darstellung ähnlich Fig. 4, unter Veranschaulichung der Kettfadenkreuzungsstelle,

Fig. 6

den Frottierexzentermechanismus der Frottierwebmaschine nach Fig. 4, unter Veranschaulichung der wesentlichen Teile, im Ausschnitt und in einer Seitenansicht,

Fig. 7

eine Frottierwebmaschine gemäß der Erfindung in einer Ausführungsform ähnlich Fig. 1, jedoch mit Webladensteuerung, in einer Darstellung ähnlich Fig. 1,

Fig. 8

den Webladensteuerungsmechanismus der Frottierwebmaschine nach Fig. 7 in einer Einzeldarstellung, im Ausschnitt, unter Veranschaulichung der wesentlichen Teile und in einer Seitenansicht sowie in einem anderen Maßstab,

Fig. 9

ein Diagramm zur Veranschaulichung der Warenbewegung und des Polkettfadenablasses bei der Gewebesteuerung der Frottierwebmaschine nach Fig. 1,

Fig. 10

eine Frottierwebmaschine im axialen Schnitt in der Seitenansicht mit einem ersten Ausführungsbeispiel der Erfindung gem. Anspruch 16 und

Fig. 11

eine Frottierwebmaschine im axialen Schnitt in der Seitenansicht mit einem zweiten Ausführungsbeispiel der Erfindung gem. Anspruch 16..

Exemplary embodiments of the subject matter of the invention are shown in the drawing. Each shows in a schematic representation:

Fig. 1

a terry loom according to the invention in axial section in a side view,

Fig. 2

2 shows a jacquard terry loom according to the invention in a representation corresponding to FIG. 1,

Fig. 3

2 in a modified embodiment and in a representation corresponding to FIG. 1, the jacquard terry weaving machine according to FIG. 2,

Fig. 4

1 in a modified embodiment and in a representation corresponding to FIG. 1,

Fig. 5

4 an enlarged view similar to FIG. 4, illustrating the warp thread crossing point,

Fig. 6

the terry eccentric mechanism of the terry loom according to FIG. 4, illustrating the essential parts, in a detail and in a side view,

Fig. 7

1 a terry loom according to the invention in an embodiment similar to FIG. 1, but with a shop control, in a representation similar to FIG. 1,

Fig. 8

7 in a single representation, in a detail, illustrating the essential parts and in a side view and on a different scale,

Fig. 9

1 shows a diagram to illustrate the movement of goods and the draping of the warp threads in the fabric control of the terry loom according to FIG. 1,

Fig. 10

a terry loom in axial section in side view with a first embodiment of the invention acc. Claim 16 and

Fig. 11

a terry loom in axial section in side view with a second embodiment of the invention acc. Claim 16 ..

Of those shown in the drawing in several embodiments Terrycloth looms are only the essential elements in FIGS. 1 to 8 shown. Each of these terry weaving machines has a first device for delivering one Basic warp thread sheet 1 with a basic thread warp beam 2, from which the Basic warp thread family 1 about a fixed axis 3 against the action of Spring means 4 pivotally mounted tension roller and a match tree 6 is guided the warp thread sheet 1 in the essentially horizontal working or weaving plane above of the basic thread warp beam 2. Between the match tree 6 and one at 7 breast tree shown are compartment-forming elements in the form of shafts 8 with healds 9 arranged by a known mechanism not shown for Specialist education can be moved up and down. The shafts 8 are not shown Assigned weft insertion means which, depending on the design of the terry loom In the form of compressed air nozzles, of grippers, as a boat, etc. can. The weft threads entered in the shed shown at 10 are from Weft thread sling means in the form of a reed or reed 11 each in groups of the type common in terry weaving to the stop edge 12 of the one shown at 13 Chipped fabric. The tissue 13 is then after the breast tree 7 via a Spiked roller trained feed roller 14, from which it in a known manner a goods tree, not shown, arrives on which it is wound up. The advice 11, which is rigidly attached to a sley 57 (Fig. 8), leads a back and forth Movement between a rear position seen in the direction of the thread and a front position Stop position. In the terry looms shown in Figures 1 to 6 is the stroke of this reciprocating movement of the reed 11 is constant.

At a distance above the basic thread warp beam 2 and the working or weaving plane is a second device for supplying a pile warp thread sheet 15 with a pile thread warp beam 16 arranged, from which the pile warp yarn sheet 15 is lowered controlled. At In the embodiment according to FIG. 1, the pile warp thread sheet 15 is taken from the pile thread warp beam 16 coming first through a rotatably mounted deflection roller 17 into a Substantially horizontal redirected level, in which the tuft threads a pile warp stop 18 pass through, the warp thread guard slats spreading on the pile warp threads with 19 are designated. The pile warp guard 18 is of a known type and, for example in the book "WEBEREI" processes and machines for fabric production, Springer-Verlag 1961 ok P.421 ff. The guard slats 19 are on both sides The pile warp yarn sheet 15 is supported on bars 20, 21 which are continuous over the weaving width, from to which the rod 21 adjacent to the shafts 8 has the pile warp thread 15 guided over it deflected about 90 °. A deflection of more or less than 90 ° is conceivable.

Below the basic warp thread sheet 1 running in the working or weaving plane is a deflecting element extending across the weaving width in the form of a deflecting element across the weaving width supported and rotatably mounted deflecting rod 22 which the by the rod 21st coming pile warp yarn sheet 15 in the working or weaving level and in the back compartment 23 of the Webfachs 10 deflected.

The deflecting rod 22 is positioned in such a way that it the base warp thread sheet 1 supports so that the compartment tip of the rear compartment 23 for both the base warp threads as well for the pile warp threads at the deflecting rod 22. The deflecting rod 22 is, as mentioned, rotatably mounted, but in principle it can also be held non-rotatably and / or by a plurality of deflecting rods and / or rollers wrapped around by the pile of warp threads 15 are replaced his.

The deflecting rod 22 is about a horizontal axis 25 a of the shaft 25 via lever 24 pivoted against the action of spring means, not shown, the the aim is to keep the pile of warp threads 15 taut. The spring-loaded deflecting rod 22 causes a warp thread length compensation for during the weaving process Change of subject and changes in the processed loop poling Pile warp thread lengths.

Alternatively or additionally, the thread path between the rod 21 of the Polkettfadenwächters 18 and the deflecting rod 22 a spring-loaded dancer shaft 26th be arranged, which is partially wrapped by the pile warp threads and also to do so serves to include a warp thread length compensation for the pile warp thread lengths, which, how mentioned during the weaving process in the loop formation and when changing the subject occurs. The dancer shaft 26 can also be rotated by a stationary shaft or a Deflection rod to be replaced. In its place or in addition, the rod 21 in the Thread path of the pile of warp yarns 15 downstream, continuous over the weaving width, spring plate-like thread deflecting plate 28 occur, as is illustrated in FIG. 5. This acting as a spring element thread deflecting plate 28 acts just like the spring-loaded Dancer shaft 26 according to FIG. 1 in the sense of calming the warp thread guard slats 19.

Finally, it should also be mentioned that the 1 arranged deflecting rod 22 can also be adjusted about the axis 25 by means of its bearing lever 24 can be stored such that the deflection point of the pile warp sheet 15 and thus their Intersection with the base warp thread sheet 1 in the direction of the shafts 8 to or from this way is adjustable.

The pile warp yarn sheet 15 is such by the shaft 26 and the deflecting rod 22 led that they at the intersection with the basic warp thread sheet 1, in the thread running direction seen includes an obtuse angle 29 of about 130 °. By adjusting the shaft 26 and / or the deflecting rod 22, the size of this angle 29 can be changed as required and adjusted accordingly.

The basic warp thread sheet 1 is on the thread path between the Match tree 6 and the deflecting rod 22, i.e. the compartment tip of the rear compartment 23, by a Warp thread monitor 30 monitors for warp thread breakage, its warp thread monitor slats 33 spread the warp threads, which are guided essentially horizontally over two rods 31, 32. The The warp thread monitor 30 is basically of the same design as the warp thread monitor 18 for the Pile of warp threads 15.

As can be easily understood from FIG. 1, the warp thread monitor 30 is the Basic warp thread sheet 1 from the warp beam side (Fig. 1, left) easily accessible because it is too this machine side is exposed and is not covered by the pile warp sheet 15.

The warp thread monitor 18 for the pile warp thread sheet 15 is open, as shown in FIG. 1 one separated from the warp thread monitor 30, indicated by a dot-dash line at 34, horizontal plane, which is spaced above the working or weaving plane and thus at a distance from the basic warp thread sheet 1 passing through the warp thread monitor 30 lies. The warp thread monitor 18 for the pile warp thread sheet 15 is therefore of the Fabric withdrawal side (in Fig. 1 right) of the machine freely accessible, so that too Broken warp threads can be repaired easily and without hindrance.

Overall, the concept described results in the arrangement of the Warp thread monitor 18, 30 for the pile warp thread sheet 15 or the base warp thread sheet 1 separate levels and the crossing of the basic warp thread sheet 1 implementation of Pile warp sheet 15 by the base warp sheet 1 a very user-friendly, Ergonomically favorable, compact and simple construction of the entire terry weaving machine.

Those shown schematically in Fig. 1 and in the following figures Further components of the terry weaving machine need only be briefly explained in order to to facilitate the overall understanding of the machine. The match tree 6 is on both sides around a horizontal axis pivotally mounted rocker 36 which is rotatably supported by a Coupling linkage 37 with the fabric feed roller 14 and with a double arm Adjusting lever 38 for the tissue control is coupled. The spring-loaded adjusting lever 38 which is designed in the form of an angle lever, is shown by one in FIG Toweling eccentric 39 back and forth about a fixed axis 40 according to arrow 41 in FIG. 1 pivoted here, so that the tissue stop edge 12 for the group stop of the Bring weft threads closer to the reed 11 and then for the partial stop of the Moving weft threads again by a predetermined distance from reed 11. This tissue control is known per se and in one embodiment with Pile height adjustment is described, for example, in EP 0 979 891 A1 and 0 768 407 A1.

The warp beam 2 of the basic warp thread family 1, the warp beam 16 of the The pile warp yarn sheet 15 and the fabric drawing roller 14 are assigned by their own, individually Drive motors 42, 43, 44 driven, the warp let of the base warp and the Control pile warp threads and the withdrawal of the fabric 13. There is a machine control unit for this (CPU) 45 are provided, each of which is a representative number of basic warp threads or warp thread tension monitoring warp thread tension sensor 46 or 47 coming processed electrical signals and also from one with the deflection roller 17th coupled sensor 48 information about the used warp thread lengths and from one supplied by the machine main shaft, incremental encoder wheel 49 Information about the movement sequences derived from the machine main shaft at Fachbildung and the movement of the reed 11 receives. In short, it will Basic warp thread coulter 1 in this terry machine with a match / breast tree system Warp length compensation performed by springs 4 and with positive control. The Warp thread tension sensors 46, 47 are in front of the thread running direction Warp thread monitor 30 or 18 arranged, i.e. in an area with a quiet thread course.

The basic function of the fabric control in terry weaving with the Terry loom is illustrated in Fig. 9, where the top representation a) the Shows the eccentric stroke of the terry cam 39 (FIG. 6) as a function of its angle of rotation, while the lower illustration shows that controlled by the drive motor 43 Play warp thread. Starting from the rear position of the stop edge, in the previous group weft stop took place, the stop edge 12 in transferred the front position in which the stop edge is further away from the reed 11 stands. During this displacement of the stop edge, the required The pile warp thread length is lowered so that the pile warp thread tension is kept approximately constant. Then a first and a second weft thread in the base and Pole warp threads formed compartment 10 introduced and from the reed 11 in one Partial stop position struck at a distance from the stop edge 12. Then moved the terry cam 39 of the stop edge 12 again in the rear position. During this The process becomes a third weft thread when producing a three-weft terry registered. By moving the stop edge to the rear position, the Chain tension from. The dancer shaft 26 increases while maintaining the chain tension the resulting elongation (reserve) of the pile thread chain. After the change of subject are the three weft threads entered by the reed 11 to the Stop edge 12 struck (group stop). At the group attack, that of the elongation (reserve) recorded by the dancer shaft is used up. This process takes place similar to the manufacture of four-, five- and six-shot terry goods.

In Fig. 2 a jacquard terry weaving machine is shown, in its basic structure of the terry loom according to Fig. 1 corresponds. The same parts are therefore designated by the same reference numerals and not explained further.

The machine has a harness indicated at 50, the cords of which are closed the healds 9 run and the warp guard 18 for the pile warp sheets 15 and 30 for the base warp thread sheet 1 covers the fabric feed side. The warp thread monitor 18 for the pile warp yarn sheet 15 is therefore compared to the conditions at 1 more towards the warp beam side, so that it from the Warp beam side is easily accessible for the operator. The deflection roller 17 is moved closer to the fabric feed roller 14 and almost directs the pile warp yarn sheet 15 360 ° around. In the area of the pile warp monitor 18, the pile warp sheet 15 is again in Mainly performed in the horizontal plane 34. It is through the rod 21 by about 90 ° deflected and penetrates the basic warp thread sheet 11 in the working or weaving plane below an acute angle 29 ', the size of which can be close to 90 °.

Basically, however, the pile warp thread guide in such a jacquard terry weaving machine also be designed similarly to the terry loom according to FIG. 1, if the structural conditions of the machine make this seem expedient. Such a variant of a jacquard terry weaving machine is illustrated in FIG. 3. In In this case, the pile warp threads cross the base warp threads at the point of intersection at the Deflecting rod 22 e.g. at the obtuse angle 29 of FIG. 1. In principle, however, it is also conceivably the warp thread monitor 18 of the pile warp thread sheet 15 further to the warp beam side (in Fig. 3 left) if this seems appropriate in individual cases. The pile warp threads and the warp thread guard slats 19 remain in any case from the warp beam side of the Weaving machine from easily accessible, while the warp guard 30 of the base warp sheet 1 is easy to operate anyway on the warp beam side.

The terry loom shown in Fig. 4 is largely the same as that of Fig. 1 constructed. The difference is that instead of pivoting on the rocker 36 stored match tree 6 of the machine of FIG. 1 the match tree 6 'of 4 is rotatably mounted and one at a point on its circumference axially parallel, radially projecting cams 51 that extend across the weaving width, against which the base warp yarn sheet 1 can be supported. In the direction of the thread opposite movement of the stop edge 12 to the group stop of the weft threads in The framework of the tissue control is the match tree 6 ', starting from the position Fig. 4, together with the fabric feed roller 14 through the terry cam 39 (Fig. 5) in Twisted counterclockwise. As a result, the basic warp thread family 1 together with the Tissue 13, based on Fig. 4, moved to the left. After the group attack of the The match tree 6 'is turned back into the position according to FIG. 4, with which the fabric 13 and the base warp yarn sheet 1 again for the partial stop of the Take the weft position. One advantage of this construction is one compared to the embodiment of FIG. 1 somewhat simplified construction because the Swing 36 for storing the match tree 6 according to FIG. 1 now by only one single crank lever 36 'are replaced, the match tree 6', controlled by the Terry eccentric 39 (Fig. 6), rotated accordingly. Since the the pile warp thread 15 in the Rear compartment 23 tangentially inserting deflecting rod 22 below the base warp thread sheet 1 is arranged, is the rotation of the match tree 6 'between its aforementioned Brief increase in the basic warp thread family 1 occurring in both angular positions the supply of the pile warp thread 15 to the rear compartment 23 is not hindered. The Pole warp threads simply slide briefly on the deflecting rod 22 from above tapering pile warp threads along until they rest on the deflecting bar 22.

Fig. 7 shows the application of the invention to a Terrycloth weaving machine with so-called shop control. The illustrated Terrycloth loom basically corresponds to the terry loom according to FIG. 1, whereby in particular the guidance of the pile warp sheet 15 and the base warp sheet 1 in are formed in the same way. The warp thread monitors 18 and 30 for the The pile warp sheet 15 and the base warp sheet 1 are arranged as in FIG. 1.

The sley 57 shown in FIG. 8 is about a horizontal axis 52 pivoted. It is through one with the main shaft of the loom coupled, at 53 schematically illustrated eccentric drive with constant stroke moved. On the sley 57, the reed (reed) 11 is about a to the pivot axis 52 parallel axis 54 pivotally mounted. An eccentric drive assigned to the sley 57 55, the reed 11 can pivot controlled with respect to the sley 57, as by a Double arrow 56 is indicated.

The eccentric drive 53 controls the reciprocating movement of the sley 57 to the partial weft of the weft threads at a distance from the weft edge 12. The reed 11 rigidly connected to the sley 57. To carry out the group attack the eccentric drive 55 pivots the reed 11 to the required extent with respect to the Weaving drawer 57 so that the weft group entered enters the stop edge 12 is struck. The movements of the eccentric drives 53, 55 are of the main shaft Machine derived.

Of the terry weaving machine shown in FIGS. 10 and 11, with the exception of FIG. only the essential elements are shown.

In FIG. 10, each terry loom has a first device for delivering one Basic warp thread sheet 1 with a basic thread warp beam 2, from which the Basic warp thread family 1 about a fixed axis 3 against the action of Spring means 4 pivotally mounted tension roller 5 and a match tree 6 is guided the warp thread sheet 1 in the essentially horizontal working or weaving plane above of the basic thread warp beam 2. Between the match tree 6 and one at 7 breast tree shown are compartment-forming elements in the form of shafts 8 with healds 9 arranged by a known mechanism not shown for Specialist education can be moved up and down. The shafts 8 are not shown Assigned weft insertion means which, depending on the design of the terry loom Form compressed air pressurized nozzles, of grippers, as a boat, etc. can. The weft threads entered in the shed shown at 10 are from Weft thread attachment means in the form of a reed or reed 11 each in groups in the usual manner in terry weaving to the stop edge 12 of the one shown at 13 Chipped fabric. The tissue 13 is then after the breast tree 7 over a designed as a needle roller feed roller 14, from which it in a known manner a goods tree, not shown, arrives on which it is wound up. The advice 11, which is rigidly connected to a sley, not shown, leads one back and forth movement between a rear position seen in the direction of the thread and a front stop position. In those shown in Figures 10 and 11 Terrycloth looms are the stroke of this reciprocating movement of reed 11 constant.

At a distance above the basic thread warp beam 2 and the working or weaving plane, a second device for delivering a pile warp thread sheet 15 with a pile thread warp beam 16 is arranged, from which the pile warp thread sheet 15 is released in a controlled manner. In the embodiment according to FIG. 10, the pile of warp threads 15 coming from the pile warp beam 16 is first diverted by a rotatably mounted deflection roller 17 into a substantially horizontal plane, in which the pile warp threads pass through a pile warp thread monitor 18, the warp thread monitor slats of which are drawn onto the pile warp threads are designated by 19 . The pile warp monitor 18 is of a known type.
On both sides of the guard slats 19, the pile warp thread sheet 15 is supported on the rods 20, 21 which are continuous over the weaving width, of which the bar 21 adjacent to the shafts 8 deflects the pile warp thread sheet 15 guided over it by approximately 90 °. A deflection of more or less than 90 ° is conceivable.

Below the basic warp thread sheet 1 running in the working or weaving plane is an over the weaving width-reaching deflection element is arranged in the form of a deflection rod 22 which the pile warp thread sheet 15 coming from the rod 21 into the working or weaving plane and in deflects the rear compartment 23 of the shed 10.

The deflecting rod 22 is positioned such that it supports the base warp thread sheet 1, so that the compartment tip of the rear compartment 23 both for the basic warp threads and for the The pile warp threads are located at the deflecting rod 22.

The deflecting rod 22 is fixedly connected via a lever 24 to a shaft 25 which is rotatably mounted about the horizontally oriented longitudinal center axis 25a. The shaft 25 is operatively connected to an electric motor drive 27, which is connected to the machine control 45 in a signal-transmitting manner via the control line 45a.
The electric motor drive 27, through its control on the part of the machine control 45, compensates for the length of the pile warp threads for the changes in the pile of pile warp threads that occur during the weaving process in the formation of pile loops. In other words, the electric motor drive 27 is during a partial displacement of the tissue 13, namely after the striking. a weft group controlled by the reed 11 in such a freely programmable manner that the deflecting rod 22 moves in the directions of the double arrow 24a, corresponding to the partial tissue displacement, about the longitudinal center axis 25a. This movement should be such that less than 3/4, preferably 1/3 to 1/2 of the suggested size of the warp thread length is compensated.
The controlled movement of the deflecting rod 22 keeps the pile warp thread tension in the pile warp thread sheet 15 at a low level during the partial fabric displacement after the weft group stop.
This procedure ensures that the loops formed in the fabric 13 are not pulled out of the fabric 13 against the weaving direction.
After the loop formation, the deflecting rod is moved back in a controlled manner, so that it is in its original position before the partial displacement of the tissue again.

In an embodiment shown in FIG 11, a one-armed lever 38 is rotatably connected to the rotatably mounted shaft 25. At the free end of the lever arm 38 engages a tension spring 58 which is held in a machine-fixed manner. Between the free end and its non-rotatable connection, the lever arm 38 has a scanning roller 38a, which is connected to the outer circumference of a rotationally driven cam 39 in a scanning connection.
The cam plate 39 has such a circumferential contour in order to implement the described movement sequence of the exemplary embodiment shown in FIG. The drive of the cam plate 39 itself can be a drive derived from the main drive shaft of the weaving machine or else an inexpensive electromotive drive without expensive control electronics.

Alternatively or additionally, as shown in FIGS. 10 and 11, the Thread travel between the rod 21 of the pile warp thread monitor 18 and the deflection rod 22 a spring-loaded dancer shaft 26 may be arranged, partially from the pile warp threads is entwined.

With the controlled influencing of the pile warp thread tension it has become possible to realize uniform loop formation in the terry fabric, which the fabric gives a visually excellent appearance.

DRAWING LEGEND

1

Basic warp thread family

2nd

Basic warp thread tree

3rd

axis

4th

Spring means

5

Tension roller

6

Matchstick

6 '

Matchstick

7

Breast tree

8th

shaft

9

Heald

10th

Shed

11

Reed

12th

Stop edge

13

tissue

14

Feed roller

15

Pile of warp threads

16

Polkettfadenbaum

17th

Deflection roller

18th

Pile warp stop

19th

Guard slats

20th

Rod

21

Rod

22

Deflecting rod

23

Back compartment

24th

lever

24a

Double arrow

25th

wave

25a

Center axis

26

Dancer wave

27

Drive motor

28

Thread deflector

29

angle

29 '

angle

30th

Warp thread monitor

31

Rod

32

Rod

33

Warp guard slat

34

level

35 36

Swingarm

36 '

Crank lever

37

Coupling linkage

38

Adjustment lever

38a

Scanning roll

39

Terry eccentric

40

axis

41

Double arrow

42

Drive motor

43

Drive motor

44

Drive motor

45

Machine control

45a

Control line

46

Warp tension sensor

47

Warp tension sensor

48

sensor

49

Encoder wheel

50

Harness

51

Cam

52

axis

53

Eccentric drive

54

axis

55

Eccentric drive

56

Double arrow

57

Drawer

58

feather

Claims (19)

Terrycloth weaving machine with a first device for supplying a basic warp thread sheet, with a second device for supplying a pile warp thread sheet, with fabric pull-in means, with at least one warp thread monitor, with deflecting means for the pile warp threads and with shed-forming elements for the warp thread sheets, to which weft thread insertion means and weft thread attachment means are assigned, of which the weft thread stop means can be moved back and forth between a rear position and at least one front stop position and can be attacked in groups by the weft threads inserted at a predetermined distance from the stop edge, forming pile thread loops, against the stop edge of the fabric, the pile warp thread family (15) being the base warp thread family (1) is passed through it in an area that crosses between the rear compartment (23) of the warp threads formed by the compartment-forming elements (8) and the delivery device (2,5,6 ) of the base warp thread array, characterized in that the pile warp thread array (15) is guided in a region which lies in the direction of the thread running before the point of intersection with the base warp thread array (1) via a device (26; 28) for forming a pile warp thread reserve, and that Device (26; 28) causes a pile warp length compensation in the loop formation and / or in the change of subject. Terrycloth weaving machine according to claim 1, characterized in that the deflection means (22) for the pile warp threads are arranged on the side of the base warp thread sheet (1) opposite the delivery device (16, 17) for the pile warp thread sheet (15). Terrycloth weaving machine according to claim 2, characterized in that the deflecting means have at least one deflecting rod (22) over which the pile warp yarn sheet (15) is guided. Terrycloth loom according to claim 3, characterized in that the deflecting rod (22) is designed as an articulated rod which is supported and supported several times over the weaving width. Terrycloth weaving machine according to claim 3 or 4, characterized in that the deflecting rod (22) is rotatably mounted. Terrycloth loom according to one of claims 3 to 5, characterized in that the deflecting rod (22) is resiliently mounted. Terrycloth loom according to one of claims 3 to 6, characterized in that the deflecting rod (22) is arranged to be adjustable. Terrycloth weaving machine according to one of the preceding claims, characterized in that the pile warp yarn sheet (15) and the base warp yarn sheet (1) form an obtuse angle (29) with one another at the crossing point, seen in the yarn delivery direction. Terrycloth loom according to one of claims 1 to 7, characterized in that the pile warp sheets (15) and the base warp sheets (1) form an acute angle (29 ') with one another at the crossing point, viewed in the direction of yarn travel. Terrycloth weaving machine according to claim 1, characterized in that the basic warp thread family (1) and the pile warp thread family (15) are assigned their own, separate warp thread monitors (30, 18), which are freely accessible from at least one machine side. Terrycloth loom according to claim 10, characterized in that the warp thread monitor (30) for the base warp thread array (1) is arranged in a first level and the warp thread monitor (18) for the pile warp thread array (15) is arranged in a second level. Terrycloth weaving machine according to claim 10 or 11, characterized in that at least the pile warp thread sheet (15) is guided in the region of the pile warp thread monitor (18) in a preferably horizontal plane (34). Terrycloth weaving machine according to claim 1, characterized in that the device for forming a pile warp thread reserve has at least one resiliently mounted thread length compensation element (26, 28) which is partially wrapped by the pile warp threads. Terrycloth loom according to claim 13, characterized in that the thread length compensation element is a resiliently mounted deflection shaft (26). Terrycloth loom according to claim 13, characterized in that the thread length compensation element has a resiliently designed and / or mounted thread deflection plate (28). Terrycloth weaving machine with a first device for delivering a base warp sheet, with a second device for delivering a pile warp sheet, with fabric insertion means and with compartment-forming elements for the warp sheets, to which weft insertion means and weft attachment means are assigned, which can be moved back and forth between a rear position and at least one front stop position are and can be attached in groups to the stop edge of the fabric by the weft threads inserted at a predetermined distance from the stop edge to form pile thread loops, the pile warp thread assembly crossing the base warp thread assembly in an area that passes between the rear compartment of the compartment-forming elements of the Warp threads and the delivery device of the base warp thread sheet is furthermore provided with at least one deflecting means for the pile warp threads, the deflecting means on that of the delivery device for the pile warp thread sheet is arranged on the opposite side of the base warp thread sheet, and wherein the deflection means forms at least one deflection bar, which, aligned over the weaving width and connected to support elements, is arranged so as to be pivotable about a horizontal axis, characterized in that the axis is an axially aligned shaft (25) with which the support levers (24) are connected in a rotationally fixed manner and that the shaft (25) is operatively connected to at least one drive (27; 39) for the controlled and freely programmed actuating movement. Terrycloth loom according to Claim 16, characterized in that the drive (27) is an electromotive drive which is reversible in its direction of rotation. Terrycloth loom according to claim 16, characterized in that the drive (39) is a rotary driven cam. Terrycloth loom according to claim 18, characterized in that the shaft (25) is operatively connected to the cam disc (39) by suitable means (38, 38a, 58).

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