WO1998044177A1

WO1998044177A1 - Arrangement with at least two texturing devices, specially for producing folded yarns

Info

Publication number: WO1998044177A1
Application number: PCT/EP1998/001806
Authority: WO
Inventors: Wolfgang RÄDER; Hans-Dieter Scherpf
Original assignee: Temco Textilmaschinenkomponenten Gmbh & Co. Kg
Priority date: 1997-03-27
Filing date: 1998-03-26
Publication date: 1998-10-08
Also published as: DE19880395C1; AU7427698A; DE19713023A1

Abstract

The invention relates to an arrangement specially designed to produce folded yarn, comprising at least two texturing devices, each having three or more rotationally arranged shafts which support at least one torsion sensor. The longitudinal axis of said shafts all form the corner of a polygon when seen axially from above. Said shafts are also provided with thread guides which are assigned to a weft exit area of each texturing device. Both polygons are positioned in relation to each other in such a way that at least two bisecting angle lines of the polygons intersect. When seen axially or parallel to the axis from above, the thread guides lie inside a respective field which is defined by the sides flanking the bisecting lines of the respective angles of the polygon.

Description

Arrangement with at least two texturing devices, in particular for producing folded threads.

The invention relates to an arrangement suitable in particular for producing folded threads with at least two texturing devices, each having three or more rotatably mounted shafts, each carrying at least one swirl generator, the longitudinal axes of which in the axial plan view each form the corner points of a polygon; thread guides are also provided, each of which is assigned to a thread outlet area of the texturing devices.

The texturing process is generally known for giving bulk to the multifilament yarn. When texturing, the yarn is given twists in the S or Z direction of rotation, and it is wound up as S or Z yarn. The most common texturing devices today are friction texturing units. These mainly consist of three shafts with friction discs on them. The centers of the waves form the corner points of an equilateral triangle.

Furthermore, the folding of two yarns, which are textured with different directions of rotation (S or Z), is generally known. Folding textured S-yarn with Z-yarn (SZ-yarn) achieves the following advantages: the yarn has a high bulk; in the case of a thick final titer, production can be carried out at higher speeds, since only half the final titer per texturing unit is textured (coarse titers are difficult to texture and at low speed); the twists in the yarn are neutralized by the combination of S and Z yarns, which leads to better processability.

When piling with known arrangements of friction disc units, there are also disadvantages: Due to the wide construction of two texturing units, only every second winding part can be used, the thread or the yarn having to be deflected strongly during piling. In order to create a clear, compact and easy-to-use arrangement for false twisting of threads by means of a double friction disc unit, which takes up little space, it is proposed in patent specification DE 34 19 448 C2 to offset the two unit heads one behind the other in the direction of the drive belt for a drive whorl to arrange a plate. The advantage of this is that the width of this texturing unit with the two aggregate heads roughly corresponds to the width of an individual texturing unit. This means that double the production output can be achieved with the entire texturing arrangement. Due to the staggered arrangement of the aggregate heads, there is also the disadvantage that after the aggregates different thread angles arise from each other, and therefore a separate specialist device is to be provided with which the threads can be summarized. These additional functional components reduce operational reliability, and experience has shown that there are malfunctions in the thread path and thread breaks. Furthermore, the maintainability and availability is reduced, in particular because one of the staggered unit heads is arranged to be difficult to access. Its operation and handling is therefore also cumbersome.

In the DE 24 01 776 a tandem arrangement of two false twist devices is described. It is proposed to provide thread guides both on the inlet side and on the outlet side. The thread guides of the two devices should be coupled to one another and at the same time adjustable, so that only the thread guide or the thread guide pair of one device then has to be actuated, and the thread guide or the thread guide pair of the other device is automatically moved as well.

The two known false twist devices (patent specification DE 34 19 484 C2, layout specification DE 24 01 776) have in common that the use of false twist devices is proposed in each case with three rotatably mounted spindles, each provided with at least one friction disk. In the axial top view, these form the corner points of an equilateral triangle. In the double unit or tandem arrangement, the sides of the different triangles parallel to each other. This parallel position leads above all to the disadvantage that the threads to be combined can only converge at an angle that is relatively large. This has an unfavorable effect on the tension and running behavior and thus on the texturing quality.

The invention has for its object to provide an arrangement and design of texturing units which is particularly suitable for folding two or more threads and in which a broad design, unfavorable accessibility and difficult handling are avoided while avoiding the disadvantages mentioned above. When using the subject, the number of necessary functional components should be reduced and the tension and running behavior and thus the texturing quality should be influenced favorably. Above all, the angle at which the threads can come out of the outlet areas of adjacent texturing devices should be kept as small as possible.

To solve this complex of problems, it is proposed according to the invention in a texturing arrangement with the features mentioned at the outset that the multiple corner formed by the swirling shafts in the axial or axially parallel top view are placed relative to one another in such a way that at least two bisectors of the multiple corners intersect, the thread guides lie in an axial or axially parallel top view within the respective field, which is delimited by the legs of the respective polygon corner angles which flank the bisectors. If the bisectors of the angles from the adjacent multiple corners converge, and the thread guides are congruent with the fields that are covered by the angles of different multiple corners, care is taken to ensure that threads running out of the adjacent texturing devices already converge in converging directions. This minimizes the angle at which two threads already twisted in the two texturing devices can converge. From this point of view there is an advantageous one Embodiment of the invention in that the thread guides are congruent to one of the bisectors in the axial or axially parallel top view.

The requirements for a compact design and the smallest possible angle, which include two threads emerging from different texturing devices, are taken into account on the basis of the invention in that the thread guides face the sides of different polygons, in particular triangles, in an axial or axially parallel top view, which in the the closest corner points of the adjacent polygon end. If the sides of different polygons are then selected so that they lie diagonally opposite each other and limit an obtuse or acute angle with their imaginary extensions, the thread guides can lie within the field delimited by the polygonal sides as an angle leg. This further promotes the aim according to the invention of letting the threads of different texturing devices run towards one another at the smallest possible angle.

The method according to the above-mentioned patent prior publications, to arrange the polygons or triangles formed by the twister shafts in plan view with their respective sides parallel to one another, is left with the invention: the polygons of adjacent texturing devices are compared to a (taught in the prior art ) Starting position, in which the sides of different polygons are parallel to each other, as it were twisted against each other. This results in a design and / or position of the two polygons in relation to one another such that the extension lines of all polygons intersect or enclose a larger angle than the zero angle (α = 0 °). It is expedient to select the longitudinal axis of a swirl shaft of the respective texturing device or the corresponding corner point of the polygon or triangle as the reference axis for the rotation of one or both polygons. It is particularly advantageous to use swirl sensor shafts or corner points defined by them which are at the greatest distance from one another as pivot points or axes for the laying or pivoting of the polygon in their position relative to one another. As a result, the sides of different polygons closest to each other can be compared even closer. The field defined between these pages then identifies the most favorable area in which the thread guides are arranged, particularly for threading, in order to achieve a narrow thread feed angle.

According to an embodiment according to the invention, the possibility is provided of arranging a feed mechanism in the middle of the thread guides of the texturing devices, without involving special technical means. With this, the threads running out of the texturing devices can then be combined or fanned. For this purpose, in systems with more than two texturing devices, it is expedient to assign two texturing devices to each other in pairs. The idea of the paired arrangement can also be applied to the unfolding and collapsing of the twister shafts for the purpose of introducing the yarn to be processed into the texturing center: after a special training, the paired texturing devices for moving the twister shafts apart and together are in each case provided with adjusting means which are coupled to one another for the simultaneous movement of the waves.

A further embodiment of the invention corresponds to the point of view of achieving and monitoring a favorable tension and running behavior for the threads that may need to be shed and the texturing quality, according to which one, several or all texturing devices of the arrangement are each provided with a sensor for measuring the thread tension.

Further features, details, advantages and effects on the basis of the invention result from the following description of a preferred embodiment of the invention and from the drawings. These show in:

Fig. 1 shows an arrangement with two texturing devices in plan view, and Fig. 2 is a front view of the device of FIG. 1, showing the thread course.

1, four texturing devices with their aggregate heads 1 are each assigned to one another in pairs. In each of the four aggregate heads 1, three shafts 2 are accommodated, each of which is surrounded by a plurality of friction disks 3 and set them in rotation. The aggregate heads 1 of two mutually adjacent and paired texturing devices are fastened on a common base plate 4. There are also electric motors 5 mounted, which serve the individual drive of the respective text er device. Alternatively, the drive can also be carried out using a drive whorl and tangent drive belt.

According to FIG. 1, the central axes of the shafts 2 (running perpendicular to the plane of the drawing) form the corner points of equilateral triangles 13a, 13b. One is highlighted in bold lines on the left of the four texturing devices in FIG. 1. Compared to an imaginary starting position, in which the wave triangles of two adjacent texturing devices would have sides parallel to one another, in the exemplary embodiment according to the invention the triangles 13a, 13b are positioned obliquely or rotated relative to one another. It is thereby achieved that the two sides 15 of the respective triangles 13a, 13b, which the thread outlet areas or outlet thread guide 7 are directly opposite, face one another at an angle. The bisectors 10 of the respective triangles passing through these sides 15 intersect due to the rotated positioning and do not run at a zero angle to one another, as in the case of a parallel relative position of the triangles. If the thread guides 7 are in the outlet area of the respective texturing device in a congruent position with the bisectors 10, a reduced distance B is achieved for them. This is largely due to the fact that the bisectors 10 of the shaft triangles 13a, 13b are at an angle to one another which is greater than 0 °. With parallel adjustment (zero angle or α = 0 °), as can be seen, the distance between the thread guides 7 would be greater than that with distance B achieved according to the invention. The distance of the text unit from one another is identified by A.

1, the unit head 1 is shown with adjusting means for opening and closing the friction disks 3. The closed state 9 is illustrated by solid lines, and the opened state 9 'is illustrated by broken lines. This opening and closing mechanism for shaft 2 and friction disks 3 is used for thread insertion.

2 shows the four texturing devices in two arrangements, each with a pair of texturing devices for folding. Four threads 6 are fed to one of the four texturing devices via thread guides 17 on the inlet side. There they are textured in opposite directions of rotation (S and Z) and reach the outlet area via the lower thread guides 7 of each texturing device. A supply unit 12 is arranged downstream of each of the two pairs of texturing devices, namely in a position approximately in the middle with respect to the two pairs, each with two outlet guides 7. There they can be combined or fused into a thread 8. Due to the inclination of the two aggregate heads 1 of each pair of texturing devices, which inclination corresponds to the above-described relative position of the triangles formed in front view of the waves, there is a small distance B for the outlet thread guides 7 of each pair. This allows the merging angle ß, under which keep the two already textured threads or yarns 6 together or fold them very low. This has a favorable effect on the tension and running behavior of the threads and thus also on the preceding texturing quality. In particular, the small distance between the two outlet thread guides per pair of texturing devices makes it possible to fold the two threads 6 without an additional specialist device. Thus, a smaller design is still possible, especially since the clear width, which determines the possible size, by the pivoted or rotated positioning of the bisector 10 or aggregate heads 1 is reduced. This has the advantage that more text units can be installed in the same machine space, in contrast to the conventional design in which the aggregate heads are parallel to each other.

Another advantageous embodiment of the invention is to make the aggregate head foldable for inserting the thread. The opening and closing of the two heads 1 can optionally take place simultaneously or in succession.

The two adjacent aggregate heads 1 of two texturing devices assigned to each other can be attached to the common base plate 4. This results in the advantage of a compact design of a double or tandem unit, as well as a uniform tool in series production. A thread tension or tension sensor 11 can be integrated at the lower end of an aggregate holder, which registers the thread tension fluctuations and forwards them to an evaluation unit.

The drive is preferably designed in a single-motor design. Then the direction of rotation of the Textuheraggregate can be chosen without changing the position or other changes to the drive.

Reference list

1 - aggregate head

2 - wave

3 - friction disc

4 - base plate

5 - motor 6 - thread

7 - outlet thread guide

8 - fold yarn 9. closed state of the foldable shaft

9 '- unfolded state of the foldable shaft

10 - bisector

11 - Thread tension sensor

12 - delivery plant

13a, 13b - triangles

14 - thighs

15 - pages

16 - Extension line

17 - Inlet thread guide α - angle between bisector ß - angle

A - Gap distance

B _ distance of the lower thread guides

Claims

claims

1. Arrangement, in particular for the production of folded yarns (8) with at least two texturing devices, each of which has three or more rotatably mounted shafts (2) each carrying at least one twist generator (3), the longitudinal axes of which, in axial plan view, each have the corner points of a polygon (13a, 13b), and with thread guides (7), each of which is assigned to a thread outlet area of one of the texturing devices, characterized by a position of the two polygons (13a, 13b) relative to one another in such a way that at least two bisectors (10) cut from the polygons (13a, 13b), the thread guides (7) lying in an axial or axially parallel top view within the respective field, which is delimited by the flanking legs (14) flanking the respective corner angles of the polygons.

2. Arrangement according to claim 1, characterized in that the thread guides (7) in axial or axially parallel top view are congruent with one of the bisectors (10).

3. Arrangement according to claim 1 or 2, characterized in that in axial or axially parallel top view, the thread guides (7) opposite the polygons (13a, 13b) on one of their sides (15), which are from the closest corner points of the polygons (13a, 13b).

4. Arrangement for the production of folded threads (8) with at least two texturing devices, each having three or more rotatably mounted shafts (2) each carrying at least one swirl generator (3), the longitudinal axes of which in an axial plan view each have the corner points of a polygon (13a, 13b), and with thread guides (7), each of which is assigned to an outlet area of the two texturing devices, in particular according to one of the preceding claims, characterized by a design and / or position of the two polygons (13a, 13b) relative to one another in such a way that imaginary extension lines (16) of all polygon sides intersect, the thread guides (7) lying in an axial or axially parallel top view within a field which is delimited and / or defined by two diagonally opposite sides (15) of different polygon corners (13a, 13b).

5. Arrangement for the production of folded threads (8) with at least two texturing devices, each having three or more rotatably mounted shafts (2) each carrying at least one swirl generator (3), the longitudinal axes of which in an axial top view show the corner points of a geometrically matching polygon (13a, 13b), and with thread guides (7), each of which is assigned to an outlet area of the two texturing devices, in particular according to one of the preceding claims, characterized in that the two polygons (13a, 13b) compared to an imaginary starting position in which the sides are different The polygons are parallel to one another and are arranged rotated relative to one another, the thread guides (7) being arranged within an axially or axially parallel top view

Fields that are defined and / or delimited by two diagonally opposite sides (15) of different polygons (13a, 13b).

6. Arrangement according to claim 5, characterized in that the one or both axes about which the one or more polygons (13a, 13b) are rotated against each other, each through a shaft (2) or a corner point.

7. Arrangement according to claim 5 or 6, characterized in that the two polygons (13a, 13b) are rotated relative to one another about respective axes which run through the shafts (2) or corner points which are at the greatest distance from one another.

8. Arrangement according to one of the preceding claims, wherein the waves (2) of the texturing devices are each accommodated in aggregate heads (1), characterized in that the aggregate heads (1) in their relative position corresponding to the relative position of the respective waves (2 ) formed polygon (13a, 13b) are placed and / or set.

9. Arrangement according to claim 8, characterized in that the thread guide

(7) is mounted on each unit head (1), preferably its side facing away from the shaft ends.

10. Arrangement according to one of the preceding claims, characterized in that the thread guides (7) is arranged downstream of a delivery mechanism (12).

11. Arrangement according to one of the preceding claims, with more than two

Texturing devices, characterized in that the texturing devices are assigned to one another in pairs to fold.

12. The arrangement according to claim 12, characterized in that the mutually assigned texturing devices are optionally arranged via their aggregate heads (1) on a common base chassis (4).

13. Arrangement according to claim 11 or 12, characterized in that the texturing devices assigned to one another in pairs for moving apart and together (9.9 ^" ) of their shafts (2) are each provided with adjusting means. hen, which are coupled to move the waves (2) of the different texturing devices simultaneously.

14. Arrangement according to one of the preceding claims, characterized in that one, several or all texturing devices are each provided with a sensor (11) for measuring the thread tension.