EP1585850A1

EP1585850A1 - Device and method for texturing a number of synthetic mixed threads

Info

Publication number: EP1585850A1
Application number: EP04704221A
Authority: EP
Inventors: Hans-Jürgen JAHNS; Bernd Kirchhoff
Original assignee: Saurer GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2003-01-24
Filing date: 2004-01-22
Publication date: 2005-10-19
Also published as: US20060010667A1; CN1742123A; WO2004065674A1; US7086130B2

Abstract

The invention relates to a device and method for texturing synthetic mixed threads. To this end, the mixed threads are parallelly formed from a number of partial threads. The partial threads are drawn off and drafted by a drawing-off means, whereby a guiding means is assigned to the drawing means and serves to guide the partial threads to the mixed threads. The mixed threads are separately textured by a texturing means. In order to obtain a bringing together of the partial threads that is as identical as possible for each of the mixed threads, the partial threads are divided into groups and, independent of one another, are laid in a to-and-fro manner by a number of traversing thread guides assigned to the partial threads. The groups of partial threads are guided independent of one another when being laid, and one of the partial threads per group of partial threads is assigned to the mixed threads at a time. To this end, the guiding means is formed by a number of groups of traversing thread guides that can be driven independent of one another in an oscillatory manner.

Description

Device and method for texturing several synthetic mixed threads

The invention relates to a device for texturing a plurality of synthetic mixed threads according to the preamble of claim 1 and to a method for texturing a plurality of synthetic mixed threads according to the preamble of claim 10.

A generic device and a generic method are known from DE 197 46 878 AI.

In the known device and the known method, the mixed threads are formed by merging several individual partial threads and then textured. Here, there is a desire that each of the mixed threads formed from individual part threads shows properties that are as identical as possible and an appearance that is as identical as possible after production. In the known device, the arrangement of the take-off means, the guide means and the texturing means results in different guides of the part threads to the individual mixed threads, so that the production of identical mixed threads requires special measures.

In order to form a single mixed thread from several partial threads, several different devices and methods are known in the prior art. For example, EP 0 485 871 A1 shows a variant in which the partial threads are swirled separately from one another by additional means before being combined to form a mixed thread.

Another method is known from DE 42 02 896 A1, in which a false twist is generated in the partial threads before being combined to form the mixed thread. In the device and method known from EP 0 133 198, the partial threads are constantly changed in their relative position in relation to one another, in order thus to obtain a mixture into a mixed thread again before entering the texturing agent. For this purpose, some of the partial threads assigned to the mixing thread are moved back and forth with small strokes.

EP 0 557 765 A1 also proposes a method and a device in which the partial threads are guided to the mixed thread ∑rusarnmen by changing their relative positions before entering the texturing agent.

All devices and methods for producing a mixed thread known from the prior art have in common that by moving the partial threads together, a certain appearance and appearance of the mixed thread is to be achieved after texturing. However, this does not solve the problems of producing several mixing threads in parallel. A multiplication of the device parts based on the known solutions for a mixed thread only leads to complex control and technical equipment in order to keep the relevant parameters for the individual production in the production of several of the mixed threads within at least narrow limits.

Accordingly, the object of the invention is to develop a device and a method of the generic type in such a way that a high degree of uniformity in the physical and visual properties of the mixed threads is achieved in the parallel production of several synthetic mixed threads.

This object is achieved by a device with the features according to claim 1 and by a method with the features according to claim 10.

Advantageous developments of the invention are defined by the features and combinations of features of the respective subclaims. The invention is characterized in that the guidance of the partial threads is completely identical for each of the mixed threads formed thereby. This prevents different mixing when the partial threads are brought together. For this purpose, the device according to the invention has a guide means with several groups of traversing thread guides. Each group of traversing thread guides can be driven to oscillate independently of neighboring groups of traversing thread guides. Each of the part threads is assigned to one of the traversing thread guides, one of the part threads being assigned to the mixed threads per group of traversing thread guides. The partial threads assigned to a group are thus laid synchronously, the groups of partial threads being guided independently of one another during the laying. Since one of the partial threads is assigned to each of the mixed threads per group of partial threads, the result is an essentially identical laying and merging of the partial threads to the mixed threads.

When using multi-colored partial threads, the development of the invention according to claim 2 and claim 11 is particularly advantageous. In this way, the same mixed colors can be produced in the individual blended threads, which result in a streak-free appearance, particularly when further processed into flat structures such as carpets.

In order to be able to set different mixed colors by changing the laying, the developments of the invention according to claims 3 and 4 are preferably used. Each group of traversing thread guides is assigned a separate linear drive which moves the group of traversing thread guides synchronously. The linear drives assigned to the groups of traversing thread guides can be controlled independently of one another. For this purpose, the linear drives are connected to a control device which has an input unit for specifying setpoint settings relating to speed, distance and time. In this way, the stroke lengths or the strokes per unit of time or interference impulses can be specified individually for each group of Chierierführer Taxes. This results in a high degree of flexibility in the production of certain blended threads.

A synchronous drive of the traversing thread guides of a group can be achieved in a simple manner in that all traversing thread guides are fastened to a guide rod at a substantially constant distance from one another. The guide rod is assigned to the linear drive and is moved back and forth with the attached traversing thread guides.

The guide means with the groups of traversing thread guides is usually arranged upstream of the withdrawal means, the withdrawal means preferably being formed from a plurality of godets. This advantageously shortens the length of occupancy of the godets and, on the other hand, it enables uniform stretching of all the mixed threads.

For this purpose, in particular the groups of traversing thread guides are arranged one behind the other in the thread running direction at short intervals such that the free length of the partial threads formed between the traversing thread guides and the godets are the same. In this way, a mutual influence on the laying when approaching the circumference of the godet can be avoided.

A particularly advantageous development of the invention provides that the traversing thread guides of at least one group of traversing thread guides are replaced by several intermingling nozzles, so that additional effects can be achieved in a simple manner in the production of mixed threads.

For texturing the mixing threads, the texturing agent preferably consists of a plurality of delivery nozzles with interacting stuffer boxes, each of the mixing threads being textured by one of the delivery nozzles and stuffer boxes. The device according to the invention and the method according to the invention are described below on the basis of a few exemplary embodiments with reference to the accompanying drawings:

They represent:

Fig. 1 shows schematically a first embodiment of the device according to the invention

FIG. 2 schematically shows a side view of a section of the exemplary embodiment from FIG. 1

Fig. 3 shows schematically a section of a further embodiment of the device according to the invention

1 schematically shows a first exemplary embodiment of the device according to the invention for producing a plurality of mixed threads. The exemplary embodiment consists of a pull-off means 1, a guide means 8 arranged upstream of the pull-off means in the thread path and a texturing means 15 arranged downstream of the pull-off means 1 Peripheral speed are driven. The take-off godet 2 is assigned the overflow roller 3 and the stretching godet 5 the overflow roller 6. The take-off godet 2 is arranged upstream of the guide means 8 in the thread running direction. The guide means 8 consists of three groups of traversing thread guides, which are identified by the reference numerals 9.1, 9.2 and 9.3. The traversing thread guides of the first group 9.1 are fastened together on a guide rod 10.1. The traversing thread guides of group 9.2 are arranged on a further guide rod 10.2 and the traversing thread guides of group 9.3 on the third guide rod 10.3. A linear drive 11.1, 11.2 and 11.3 is assigned to each of the guide rods 10.1, 10.2 and 10.3, through which the guide rods 10.1, 10.2 and 10.3 are driven back and forth in small strokes in the direction transverse to the thread run. A control device 12 is provided for controlling the linear drives 11.1, 11.2 and 11.3. The control device 12 contains a control device 13 and an input unit 14 connected to the control device 13.

The texturing agent 15 is arranged downstream of the removal means 1. The texturing means 15 comprises a total of three texturing nozzles 16.1, 16.2 and 16.3, which interact directly with a stuffer box 17.1, 17.2 and 17.3. A cooling device 18 is arranged downstream of the stuffer boxes 17.1, 17.2 and 17.3. The cooling device 18 is formed, for example, by a rotating cooling drum or a running cooling belt.

The exemplary embodiment shown in FIG. 1 is thus suitable for producing three mixed threads in parallel next to one another. The number of mixing threads is exemplary. The number of partial threads that form the respective mixing thread is also exemplary. As shown in Fig. 1, a total of nine threads 19.1 to 19.9 are drawn off in parallel from the take-off godet 2 from a template, not shown here. The template could be formed, for example, by a spinning device, in which the part threads are extruded from a plurality of filament strands and brought together. However, it is also possible for the template to be determined by a creel in which the part threads are held by the supply bobbins.

Before entering the take-off godet 2, the partial threads 19.1 to 19.9 are guided through the guide means 8. For this purpose, each traversing thread 19.1 to 19.9 is assigned a traversing thread guide of the traversing thread guides divided into groups 9.1, 9.2 and 9.3. Thus, the partial threads 19.1, 19.4 and 19.7 are guided by the traversing thread guides of the first group 9.1. The partial threads 19.2, 19.5 and 19.8 are guided by the traversing thread guides of group 9.2 and the partial threads 19.3, 19.6 and 19.9 are guided by the traversing thread guides of group 9.3. The partial threads 19.1, 19.4 and 19.7 thus represent a group of partial threads. Likewise, the partial threads 19.2, 19.5 and 19.8 form another Group of partial threads and the partial threads 19.3, 19.6 and 19.9 a further group of partial threads. In the production of multicolored mixed threads, the groups of the partial threads are preferably formed by the partial threads of the same color. For example, red-colored partial threads can be guided through the first group of traversing thread guides 9.1. Accordingly, the further groups of partial threads could have a different color or no color, for example. The partial threads 19.1 to 19.9 are then moved back and forth linearly in small strokes by the linear drives 11.1, 11.2 and 11.3 to the thread running direction. Here, a laying algorithm is specified by the control device 12 for each group of partial threads or for each group of traversing thread guides 9.1, 9.2 and 9.3. For example, the input unit 14 can be used to enter the respective setpoint values which are given to the linear drives 11.1, 11.2 and 11.3 via the control unit 13. The groups of partial threads can be moved with different parameters, such as the length of the stroke, the number of the stroke per minute and interference pulses. The control unit 13, which can be formed, for example, by a PLC, achieves a synchronous movement sequence from group to group.

By laying the partial threads 19.1 to 19.9, three mixed threads 20.1, 0.2 and 20.3 are formed next to each other when they run onto the take-off godet 2. A partial thread of a group of traversing thread guides 9.1, 9.2 and 9.3 is thus assigned to each of the mixed threads 20.1, 20.2 and 20.3. The mixed thread 20.1 is formed from the partial threads 19.1, 19.2 and 19.3. The mixed thread 20.2 is formed from the partial threads 19.4, 19.5 and 19.6, etc.

The mixed threads 20.1, 20.2 and 20.3 are guided in several loops over the take-off godet 2 and the overflow roller 3 to the stretch godet 5 with the overflow roller 6. The take-off godet 2 and the draw godet 5 are driven by the associated godet drives 4 and 7 at different peripheral speeds, so that a stretching of the mixed threads 20.1, 20.2 and 20.3 between the take-off godet 2 and the Stretching godet 5 takes place. After stretching, the mixed threads 20.1, 20.2 and 20.3 are swaged through the texturing nozzle 16.1, 16.2 and 16.3 into a stuffer box 17.1, 17.2 and 17.3 to form a thread plug 21.1, 21.2 and 21.3. For this purpose, the mixing thread 20.1 is drawn in through the texturing nozzle 16.1 by means of a conveying medium in a thread channel and conveyed into the subsequent stuffer box 17.1. Accordingly, the mixed threads 20.2 and 20.3 are guided through the assigned texturing nozzles 16.2 and 16.3. In this case, hot conveying media such as hot air are preferably used, so that the filaments of the mixed threads 20.1, 20.2 and 20.3 each lay in loops and arcs so that crimping occurs. To stabilize and fix the crimp, the pent-up thread plugs 21.1, 21.2 and 21.3 are guided in parallel over a cooling device 18 and cooled. After cooling, the thread plugs 21.1, 21.2 and 21.3 are each dissolved into a textured mixed thread 22.1, 22.2 and 22.3. The textured mixed threads 22.1, 22.2 and 22.3 thus produced are then preferably wound up into bobbins. However, it is also possible to carry out further treatments, such as, for example, stretching, tempering and / or intermingling, before winding on the textured mixed threads.

FIG. 2 schematically shows a section from the first exemplary embodiment according to FIG. 1, in which a particularly advantageous arrangement of the guide means 8 and the trigger means 1 is provided. The groups of traversing thread guides 9.1, 9.2 and 9.3 and the take-off godet 2 with the overflow roller 3 are shown in a side view. The groups of traversing thread guides 9.1, 9.2 and 9.3 are arranged one behind the other in the thread running direction such that a free thread length L forming between the respective traversing thread guides and the run-up points on the circumference of the take-off godet 2 is of the same size for each of the groups of traversing thread guides 9.1, 9.2 and 9.3. The run-on points of the partial threads of a mixed thread lie at different angular ranges of the run-off godet 2, so that advantageous ones Obstacles in the laying of the partial threads to the mixed threads can be avoided.

3 shows a further exemplary embodiment of the device according to the invention in a detail. Here, the guide means 8 and part of the trigger 1 is shown. The design of the trigger 1 is identical to the embodiment of FIG. 1, so that reference is made to the preceding description. The guide means 8 is essentially identical to the previous exemplary embodiment according to FIG. 1, so that only the differences are explained in more detail here and otherwise reference is made to the previous description.

In the guide means 8 shown in FIG. 3, the traversing thread guides are replaced by individual swirling nozzles 23.1 to 23.9. The swirling nozzles 23.1 to 23.9 are divided into groups and attached to the guide rods 10.1, 10.2 and 10.3. The swirling nozzles 23.1 to 23.9 are each connected to a compressed air source (not shown here). In this embodiment, the laying of the partial threads is combined with a swirling of the partial threads. This enables special mixing effects to be achieved, for example to obtain intensive mixing. In particular, the visual properties of the mixed threads can be influenced in this way.

Despite the great flexibility with regard to the adjustability of certain mixing ratios, the device according to the invention and the method according to the invention are distinguished by a very high degree of uniformity in the production of parallel mixing threads. Due to the synchronous laying of all part threads, in addition to the high uniformity, good reproducibility is given in order to produce certain mixed color effects with a large number of mixed threads. The number of mixed threads can be easily expanded by extending the guide means to, for example, six or new threads. LIST OF REFERENCE NUMBERS

1 trigger

2 deduction godets

3 overflow roller

4 godet drive

5 stretch godet

6 overflow roller

7 godet drive

8 guide means

9.1, 9.2, 9.3 Group of traversing thread guides

10.1, 10.2, 10.3 guide rod

11.1, 11.2, 11.3 linear drive

12 control device

13 control unit

14 input unit

15 texturing agents

16.1, 16.2, 16.3 texturing nozzle

17.1, 17.2, 17.3 sting chamber

18 cooling device

19.1 ... 19.9 partial threads

20.1, 20.2, 20.3 mixed thread

21.1, 21.2, 21.3 thread plug

22.1, 22.2, 22.3 textured mixed thread

23.1 ... 23.9 Swirl nozzle

Claims

Patent claims

1. Apparatus for texturing a plurality of synthetic mixed threads with a pull-off means (1) for pulling off and stretching a plurality of partial threads (19.1 - 19.9), with a guide means (8) assigned to the pull-off means (1), through which the partial threads (19.1 - 19.9) lead to Mixing threads (20.1 - 20.3) are guided, and with a texturing agent (15) for separately texturing the mixing threads (22.1 - 22.3), characterized in that the

Guide means (8) has several groups of traversing thread guides (9.1, 9.2, 9.3) that each group of traversing thread guides (9.1, 9.2, 9.3) can be driven in an oscillating manner independently of adjacent groups of traversing thread guides (9.1, 9.2, 9.3), so that each of the part threads (19.1 - 19.9) one of the guiding thread guides is assigned and that the mixed threads (20.1 -

20.3) for each group of traversing thread guides (9.1 - 9.3) one of the partial threads (19.1 - 19.9) is assigned.

2. Device according spoke 1, characterized in that each group of traversing thread guides (9.1, 9.2, 9.3) a group of partial threads (19.1,

19.2, 19.3) with preferably the same properties.

3. Apparatus according to claim 1 or 2, characterized in that each group of traversing thread guides (9.1, 9.2, 9.3) is assigned a separate linear drive (11.1, H-2, 11.3) and that the groups of

Traversing thread guides (9.1, 9., 9.3) associated linear drives (11.1, 11.2, 11.3) can be controlled independently of one another.

4. The device according to claim 3, characterized in that the linear drives (11.1, 11.2, 11.3) are connected to a control device (12) which has an input unit (14) for specifying setpoint settings relating to speed, distance and time.

5. Apparatus according spoke 3 or 4, characterized in that the traversing thread guide of a group (5.1) are attached to a guide rod (10.1) at a substantially constant distance from one another and that the guide rod (10.1) is assigned to one of the linear drives (11.1).

6. Device according to one of claims Ibis 5, characterized in that the withdrawal means (1) is formed by a plurality of godets (2, 4), the guide means (8) of the first godet (2) being arranged directly in the thread path.

7. The device according to claim 6, characterized in that the groups of traversing thread guides (9.1, 9.2, 9.3) are arranged in succession in the thread running direction at short intervals such that the between the traversing thread guides (9.1, 9.2, 9.3) and the godet (2) educated free

Lengths of the partial threads are the same.

8. Device according to one of claims 1 to 7, characterized in that the traversing thread guide at least one group of traversing thread guides (9.1, 9.2, 9.3) through a plurality of intermingling nozzles

(23.1 - 23.9) are replaced.

9. Device according to one of claims 1 to 8, characterized in that the texturing agent (15) per mixing thread (20) through a conveying nozzle (16) and a stuffer box interacting with the conveying nozzle (26)

(17) is formed.

10. A method for texturing a plurality of mixed threads, in which the mixed threads are formed in parallel from several partial threads, the partial threads being guided to form one of the mixed threads in a predetermined manner, and in which the mixed threads are separately textured, characterized in that the partial threads are divided into groups and independent are moved back and forth from one another by a plurality of traversing thread guides assigned to the partial threads, the groups of partial threads being guided independently of one another during the laying, and that one of the partial threads is assigned to the mixed threads per group of partial threads.

11. The method according to claim 10, characterized in that the partial threads with the same properties are each detected to one of the groups of partial threads.