EP0906459B1 - False twist texturizing machine - Google Patents

Abstract

The present invention concerns a false twist texturizing machine as well as a method for texturizing synthetic threads to be implemented at the spots for treatment, comprising inside a false twisting area a twist stopping device, a heating device, a cooling device and a false twisting mechanism. The thread is drawn from the false twisting area using a delivery unit. The inventive twist stopping device may be driven by a conveying roller around which the thread is partially wound so that its delivery can be either throttled or loosened, thereby enabling adjustment of the thread tension inside the false twisting area.

Description

The invention relates to a false twist texturing machine for texturing of synthetic threads according to the preamble of claim 1 and a Texturing method according to the preamble of claim 51.

False twist texturing machines of this type have a large number of processing points - usually up to 216 processing points - which in Machine side are arranged side by side. Here, each of the Processing sites on a first delivery plant and a second delivery plant. The first supplier pulls the thread from a supply spool and conveys it him in a false twist zone. The second supplier pulls the thread from the False twist zone and promotes it to a winding device, the Thread speed and the stretching of the thread by the speed ratio is determined between the second and first supplier.

When texturing synthetic threads, thread speeds are common, which is both a correspondingly long heating zone and a corresponding one require a long cooling zone. In the false twist process, the quality of the achieved Ripple in particular due to the in the individual areas within the false twist zone prevailing thread tension. For example known that a low, not yet endangered the stable thread running Thread tension in the heating zone for achieving a good crimp is desired. On the other hand, it was also observed that with the increase the thread tension, for example in the area of the cooling rail, improves the result accompanied. So it would be desirable to have a thread tension in set the false twist zone, both during the heat treatment and also gives good results during cooling.

A false twist texturing machine is known from EP 0 638 675, which a swirl stop device designed as a rotatable conveyor roller within the false twist zone. This does indeed mean that the friction force exerted on the thread by the twist stop device only too a slight change in thread tension, but the absolute value is the Thread tension in the false twist zone essentially from that between the stretching ratio set in the first and second delivery plants. Thus, a change in the thread tension in the false twist zone would only be achievable by changing the thread speed.

The object according to the invention is then to prepare options adjust to the effective tension in the false twist zone essentially to influence or to be independent of the thread speed Taxes.

Another object of the invention is that one especially the thread gentle application, gentle thread processing and thus higher texturing speeds can be achieved. It is also the goal of the invention to provide a false twist texturing machine in which each Processing point independent of the neighboring processing points is easy to use.

The object is achieved by the features of claim 1 and solved by the features of claim 51.

The false twist texturing machine according to the invention and the inventive Process for texturing is particularly characterized in that the thread tension within the false twist zone regardless of the between downstream of the fume cupboard and the false twist zone Supplied stretch ratio is changeable. Here the runs in false twist generated as far back as to generate the Ripple in the thread is required. Thus, the swirl stop device arranged immediately in front of the heating device. The thread tension in the thread is determined by the friction between the running thread and the Circumferential surface of the driven conveyor roller is affected. The conveyor role can are driven such that the peripheral speed of the conveyor roller is less than the thread speed. The thread would become with a sliding friction component over the circumferential surface of the conveyor roller guided. This will increase the thread tension in the false twist zone reached.

In the event that the peripheral speed of the conveyor roller is equal to Thread speed, there is an essentially neutral thread tension Deflection of the thread by the twist stop device. In the false twist zone acts the thread tension, which results from between the take-off delivery unit and the speed ratio set in the second delivery unit.

To create a low thread tension level in the false twist zone, it is necessary to drive the conveyor roller so that the peripheral speed the peripheral surface is greater than the thread speed. This creates between the thread and the peripheral surface of the conveyor roller a slip, which leads to a reduction in thread tension. This process variant would also be suitable to switch between the trigger delivery plant and the Twist stop device to generate a pre-stretching in the thread.

In order to be able to absorb the twist moment of the thread, the A swirl stop device can generate a corresponding counter torque. This is achieved particularly advantageously in that the thread in the looping area the conveyor roller zigzag on the circumferential surface of the Conveyor role is performed. Thereby arises in each deflection point between the thread and the conveyor roller a friction that is essentially only the Counteracts transverse forces of the thread.

The zigzag-shaped thread running track on the peripheral surface of the conveyor roller can be particularly advantageous by individual on the circumference of the conveyor roller Realize arranged thread guide elements. This makes it possible for everyone to realize any form of thread deflection transverse to the thread running direction. The maximum deflection of the thread is due to the covering opposite leading edges determined. The number of redirections is determined by the distance between the thread guide elements certainly.

In a preferred development, the thread guides are rings trained, the driven conveyor roller carrying it from both end faces are postponed. You can keep the thread track between you form or be shaped so that the thread track by appropriate, Extensions that extend radially from the inner surfaces of the ring and are attached to the side is formed.

In a further preferred embodiment, the conveyor roller is off two discs formed, which protrude laterally on their outer edges Have thread guide elements and one another in such a way Drive shaft are arranged that there is a zigzag thread track on a circumferential surface formed by the thread guide elements.

To wrap the thread on the thread guide edges of the thread guide elements to influence, it is particularly favorable if the thread guide elements are adjustable. With this, even at low Wrapping the peripheral surface of the conveyor roller in the thread a high Frictional moment to absorb the twist moment of the thread are generated.

The thread can be attached to the conveyor roller by a movable thread deflection device be put on particularly gently, directly in the thread run is arranged in front of or behind the conveyor roller such that the wrap angle changeable on the conveyor roller by the deflection device is. Here, the wrap angle on the conveyor roller in the area can be set between 0 and 360 degrees. The is preferred Thread is first applied to the conveyor roller with very little wrap. Then the wrap can by the movement of the thread deflecting device on the conveyor role are steadily increased until those for funding required wrapping or the wrapping required for the thread running is set.

It has proven to be particularly favorable if the thread guide edges the thread guide elements have a radius of curvature of at least 1.5 mm exhibit. This is a thread-saving deflection for realizing the zigzag-shaped thread run guaranteed.

The zigzag described by the thread track should follow one one or the other end of the conveyor roller open angle of include at least 100 ° C.

In the event that the peripheral surface of the conveyor roller by thread guide elements is formed, at a constant drive speed of the conveyor roller achieved that the peripheral speed of the peripheral surface can be changed is. Likewise, the wrap angle on the peripheral surface can the conveyor roller are influenced to a small extent.

The dimensions of the swirl stop roller according to the invention can be relative wide range vary. To absorb the twist moment of the thread However, it has been shown that a diameter of the peripheral surface of the A conveyor roller of at least 40 mm must be observed.

In order to increase the effect of the conveyor roller, it is particularly favorable if the conveyor roller on the periphery of several parallel zigzag-shaped Has thread traces. Here the change from one Thread running track to the next thread running track through an axis parallel to the conveyor roller arranged second support roller ensures.

In general, it has proven advantageous to use the thread running track, i.e. with areas of the conveyor roller which are in contact with the thread and the deflection points the thread guide elements with a low-wear coating provided or the thread guides from a suitable abrasion arm, for example manufacture ceramic material.

In the case of the threads, the twist can also be sufficiently achieved using a godet brake. Here it is necessary that the godet has a leading edge has in order to absorb the transverse force of the thread.

In operation, more or more occur on all surfaces in contact with the thread less wear and tear. These signs of wear result but also that the thread tension of the thread changes. Moreover unstable thread courses can occur. Therefore it is special advantageous if the texturing machine according to the invention with a control device is executed with a thread tension sensor and with the Drive of the conveyor roller is connected. Thus, depending on Control the drive of the conveyor roller directly from the measured thread tension. If the control device is given a target value for the thread tension, then the thread tension in the thread can be permanently adjusted using the conveyor roller become.

It is recommended to arrange the thread tension sensor in front of the heating device, so that the position of the developing point in the heater in remains essentially stable. In addition, the lowest possible thread tension level be driven in the false twist zone.

Since the thread tension is generally higher in the cooling phase than in the Heating phase and should also not fall below a certain level, is the false twist texturing machine according to the invention with an intermediate the heating device and the cooling device arranged thread tension sensor preferably used, especially in cases where the cooling device and the heating device in a straight line running in succession are arranged so that an increase in thread tension by deflecting thread guide not possible.

In a particularly advantageous development of the invention Texturing machine is provided that the thread from a supply spool is pulled off directly by the conveyor roller. In addition to the thread tension also the thread speed through the conveyor roller and that downstream delivery plant determined.

The conveyor roller is advantageous here by means of an electric motor driven. This means that each processing point is independent of the neighboring ones Machining points adjustable. It can be used in every processing point an essentially equally high thread quality can be generated. It is however possible to cross a group of adjacent conveyor rollers together to drive a drive. Here are the conveyor rollers through a continuous Drive shaft connected together by means of a motor is driven.

It is known for example from DE 33 24 243 that the supplying plants the processing points are driven by a drive motor, wherein the first supply plants and the second supply plants are geared to each other are coupled. The supplying plants of neighboring processing centers will here formed by continuous drive shafts.

With such an arrangement, the yarn can be broken if the yarn breaks Winder formation occurring at supplying plants either only by switching off the entire machine or only extremely difficult with the drive shafts running be removed. Furthermore, when creating a new one Thread in a processing point the problem is that the thread to delivery plants must be created, the high required for processing Have conveyor speed.

In air texturing machines for the production of loop yarn, it is common to drive the delivery plants by individual drives, as from DE 36 23 370 is known. Such machines have no false twist zone, so that a relatively short thread path between the supply spool and the winding device can be realized. The supplying plants become too modules arranged within easy reach of the operator with one or several drives combined. The godets used or Strappy delivery plants, however, also have the disadvantage that a broken one Thread leads to a winder formation that is difficult to remove.

The particularly preferred development of the invention according to claim 20 or 21 creates a false twist texturing machine, which is characterized by that the first delivery plant is formed by a conveyor roller. in this connection the required transport speed on the thread is caused by frictional forces transfer. For this purpose, the thread loops around the conveyor roller in the circumferential direction partially, with the thread back and forth across its direction is deflected so that a zigzag-shaped thread track on Sets the scope of the conveyor roller. Through this zigzag-shaped thread running track the friction forces on the thread are increased so far that the Sliding of the thread on the peripheral surface is prevented. Also leads the zigzag-shaped thread running track means that only one tensioned thread on the peripheral surface of the conveyor roller because the sliding resistance on the Deflection point of the thread track must be overcome. With a broken one Therefore, there will be no tight winding on the peripheral surface of the thread Form conveyor role. The thread will extend around the circumference outside the thread track wind up and can be easily removed.

The conveyor rollers are each independently driven, so that each Processing point can be controlled individually. This can the so-called sympathy thread breaks are particularly advantageously avoided become. A sympathy thread break exists if the thread break on one Processing point one or more thread breaks of adjacent processing points has the consequence. With the texturing machine according to the invention thus a high level of process reliability and minimal thread scrap achieved.

Even when setting up a false twist texturing machine according to the invention misalignments on the floor do not affect the Delivery mechanisms.

In a preferred embodiment, the conveyor rollers can be coupled and / or releasably connected to the respective drives. So with one Winder formation the conveyor roller in a simple manner from the processing point to remove and replace with a new conveyor roller. In order to downtimes are significantly reduced.

The drives of the conveyor rollers are preferably designed as electric motors, which can be controlled by individual inverters or group inverters.

In a development of the invention, the conveyor rollers are each through a drive unit combined with an eddy current brake. Such an arrangement can reduce the control effort of the drive be reduced.

In a further particularly advantageous embodiment of the invention Texturing machine is the conveyor roller by means of an application device operable. This allows short thread runs in the machine will be realized. The conveyor rollers can be placed in the machine be placed that can only be reached by the operator with auxiliary devices is. Another advantage is that the thread with as few deflections can be performed, so that a gentle Thread treatment with few friction points is possible.

A false twist texturing machine is known from EP 0 641 877 A2 composed of a winding frame, a process frame and a gate frame is. Is between the winding frame and the process frame an operating aisle is formed to free-run each thread by hand to the delivery plants and create other treatment facilities. This structure leads to a complicated thread run with several deflection points in the Thread run between the creel frame and the process frame.

The particularly advantageous embodiment of the invention according to claim 26 or 27 provides a false twist texturing machine, which immediately before the first delivery plant and which the Has arranged heater and the cooling device in one plane. Through the Arrangement is achieved that the thread when passing through the heater and the cooling rail is exposed to very little friction. By means of the The delivery plant is given a defined transport speed to the fadem. The arrangement according to the invention could also be used additional swirl stop device in front of the heater. The one in Thread run behind the cooling rail caused by the false twist would only progress to the first supplier. In the delivery plant then due to a frictional torque or Clamping on the thread dissolves the twist. The swirl stop roller limits thus the false twist zone. The false twist texturing machine according to the invention is particularly characterized by a low overall height, since the Level in which the heater and the cooling device are arranged, runs horizontally or with a slight inclination to the horizontal.

According to the invention, the first delivery plant is equipped with a placement device served. This ensures that the thread by a Operator can be created safely or this when winding can be removed. It is particularly advantageous if the Application device is to be operated from the operating aisle. So that is ensures that at the start of the process the thread is fed into the supplying plants and the individual treatment facilities by an operator can be done by hand.

The application device can also consist of two sections, wherein in the first section, the application device is vertically movable in order to for example, the thread from the operating position to one for threading bring required working height. In the second section is the application device horizontally movable, so that, for example, the thread in a Above the spool gate arranged pulley can be inserted and then the thread is fed to the conveyor roller.

An advantageous development of the false twist texturing machine according to Claim 29 has the advantage that the operating aisle and the Doffgang to The texturing bobbins are cleared apart. This will achieved that the finished spools cleared at any time by a clearing device can be used without disturbing the operating personnel. The Thread is also directly from the creel frame directly led to the heater input. Here, the thread is advantageously only guided over a pulley.

A particularly advantageous embodiment according to claim 31 sees before that the first delivery plant with a height-adjustable feed arm Application device is firmly connected. So the first delivery plant can be adjust between an operating position and an operating position. In the operating position that can be reached by the operator the thread is manually applied to the first delivery plant. Then the delivery plant through the feed arm into that required for the texturing operation Brought operating position. The application device could be advantageous here at the same time apply the thread to the first heater, such as for example from DE 25 30 125 (Bag. 949) is known.

In an advantageous development of the false twist texturing machine according to the invention the conveyor roller is fixed with a height adjustable Arm of the application device connected and is adjustable by means of the height Arm between an operating position and an operating position adjusted. This ensures that the thread at the start of the process by a Operator can be created, which increases the security. Furthermore is an exchange of the winder formation on the conveyor roller Conveyor roller or removing the thread remnants in the operating position without Aid can be carried out by the operator.

A particularly preferred development of the invention according to claim 36 leads to a high flexibility of the respective processing point. In order to the supplying plants of a processing point can be set individually. In addition, the thread break in front of the winding device Winder can be easily removed from the delivery plant.

The drives of the conveyor rollers are interconnected via a control device connected, so that the conveying speeds of the delivery plants one Processing point to the speed ratio required for drawing the thread remains set. This also allows any Realize the speed ratio between the supplying plants.

The control device is according to claim 15 with a thread tension sensor connected, which is arranged within the false twist zone. This leaves the thread tension required for the process by means of the conveyor rollers influence. This is particularly advantageous if after a long period of operation due to signs of wear on the thread-guiding parts the thread tension required for the process has risen to an impermissible level is. It can also be used to process very low levels the thread tension are driven. In case of a thread break, this can be done there is also an advantageous shutdown of the conveyor roller.

A further development of the invention provides that the control devices a processing point is connected to a machine control unit. In order to there is the possibility of a initiated via the machine control unit carry out collective changes in the speed of the delivery plants. This Arrangement is advantageous if, for example, in the processing point Thread speed should be raised. This is done with the machine control a collective adjustment of the processing point made. However, there is also the possibility, for example, of switching the Supplying plants from a mooring speed to an operating speed, that the machine control of the control device specifies a time function. The time function controls the switching of the speeds of the delivery plants so that no impermissible tension peaks occur.

In a particularly preferred development of the invention, the control device a processing point connected to an energy buffer that in the event of a power failure, controlled braking of the drives within the Processing point enabled. This can prevent that Power failure leads to an uncontrolled termination of the process caused a thread break.

In order to avoid any thread tension peak in the thread starting at the beginning of the process To produce thread, it is particularly advantageous if the conveyor rollers one Processing point when creating essentially the same conveyor speed exhibit. This ensures a safe threading.

The thread guide on the conveyor roller can be designed such that the wrap angle greater than 180 ° can be realized on the conveyor roller without that a substantial increase in thread tension arises in the thread. The string can be largely neutral to thread tension by such conveyor rollers redirect. This is particularly advantageous for compact machine structures to realize. This makes it possible to separate machine components Combine modules.

A particularly advantageous development of the invention is according to the second delivery plant with a second heater and one as a conveyor roller trained third delivery plant. This is the false twist texturing machine especially suitable for texturing polyester yarn. The thread is then heat-treated in the second Heater, where the thread tension depends on the speed ratio of the conveyor rollers hangs in front of and behind the heater.

Here, the set heater is behind the second supplier in the process frame arranged. A third delivery plant that conveys the thread for winding, is arranged on the winding frame.

Another preferred embodiment of the false twist texturing machine has individual drives for each unit in a processing point. In order to is a high degree of flexibility with regard to yarn processing and machine arrangement reached. In the winding device the traversing and the friction roller each via individual drives, preferably converter-controlled electric motors, driven. Likewise, the false twister with one electric single drive.

In the design of the individual drives of the winding device Embodiment in which the drive of the friction roller axially in the friction roller integrated is particularly advantageous. This makes it particularly compact Create rewinder.

Usually, the thread is carried with before it is taken up a preparation order. Such projection devices are preferably carried out as roller preparation devices. Here is the Projection means from a bath conveyed to the thread by means of a roller. In order to increase the flexibility of the processing point, it is particularly of Advantage if this roller is driven by a roller motor. The The roller motor is independent of the neighboring one Machining point driven.

In a particularly preferred embodiment of the invention A thread brake is arranged in front of the feed roller. The thread brake can be adjusted such that a defined preload is produced. The thread brake can be advantageous by several Realize thread guides partially wrapped around the thread, one of the thread guides is adjustable to change the wrap.

The false twist texturing machine according to the invention and the inventive Processes are characterized in particular by the high flexibility in the production of textured yarn. They are both polyamide yarns with fine titer as well as polyester yarns with very large titer appropriate setting of the thread tension in the false twist zone to edit.

The method according to claim 56 is particularly suitable for the thread to be applied at high thread speeds. To avoid high Thread tension peaks there is the possibility of the threading speed align the supplying plants. So that the first delivery plant as well the second supplier works at the same speed.

Switching the supplying plants from the docking speed to the Operating speed is advantageously based on a predetermined time function. Here, a collective adjustment of the delivery plants can be carried out. However, the aim is to control the time function To specify delivery systems in such a way that this is due to the speed difference Defined stretching ratio of neighboring supplying plants only when reached the operating speed. Thus, inadmissible Thread tension peaks when starting the machine after the thread in every unit is inserted avoided.

The false twist texturing machine according to the invention is also preferred as run a double machine. Here, the two machine halves placed in such a way that the process racks are directly opposite each other. This ensures that the electrical drive components for the false twisters as well as for the second delivery plant in a common one Drive cabinet can be summarized.

The machine according to the invention enables a particularly gentle thread Texturing at high texturing speeds. Because of the between the gate frame and the process frame essentially straight Course of the thread, the thread spanning the take-up frame realized a low height of the machine. Despite this low overall height is the false twist texturing machine with a heating and cooling section equipped for high speeds of even coarse polyester yarns suitable is.

Some embodiments are given below with reference to the accompanying ones Drawings described in more detail.

Fig. 1 und 2

das Schema einer erfindungsgemäßen Falschdrall-Texturiermaschine mit Fadenzugkraftregelung in der Falschdrallzone;

Fig. 2

das Schema eines weiteren Ausführungsbeispiels einer Falschdrall-Texturiermaschine;

Fig. 4 bis 6

eine als Förderrolle ausgeführte Drallstopeinrichtung;

Fig. 7 und 8

weitere Ausführungsbeispiele einer Drallstoprolle;

Fig. 9

eine schematische Ansicht eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Falschdralltexturiermaschine;

Fig. 10

eine schematische Ansicht einer Doppelmaschine;

Fig. 11

eine schematische Ansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Falschdrall-Texturiermaschine;

Fig. 12 und 13

weitere Ausführungsbeispiele der erfindungsgemäßen Falschdrall-Texturiermaschine mit Einzelantrieben;

Fig. 14

ein weiteres Ausführungsbeispiel einer Maschinensteue rung einer Texturiermaschine aus Figur 11;

Fig. 15

ein Lieferwerk mit Fadenumlenkeinrichtung;

Fig. 16

ein weiteres Ausführungsbeispiel eines Antriebes für ein Lieferwerk;

Fig. 17

ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Falschdralltexturiermaschine

They represent:

1 and 2

the scheme of a false twist texturing machine according to the invention with thread tension control in the false twist zone;

Fig. 2

the diagram of another embodiment of a false twist texturing machine;

4 to 6

a swirl stop device designed as a conveyor roller;

7 and 8

further embodiments of a swirl stop roll;

Fig. 9

a schematic view of another embodiment of a false twist texturing machine according to the invention;

Fig. 10

a schematic view of a double machine;

Fig. 11

a schematic view of another embodiment of the false twist texturing machine according to the invention;

12 and 13

further exemplary embodiments of the false twist texturing machine according to the invention with individual drives;

Fig. 14

a further embodiment of a machine control of a texturing machine from FIG. 11;

Fig. 15

a delivery plant with thread deflection device;

Fig. 16

a further embodiment of a drive for a delivery plant;

Fig. 17

a further embodiment of a false twist texturing machine according to the invention

In the following exemplary embodiments of the false twist texturing machine according to the invention are the components of the same function with identical Reference numerals named.

The following applies to the false twist texturing machine according to FIGS. 1 to 3 Description. Insofar as there are differences, this will be described in the description especially mentioned.

The false twist texturing machine points in the longitudinal direction - in the figures the drawing plane is the same as the transverse plane - a multitude of processing points , with one thread being processed per processing point becomes. Because the rewinder is three processing points wide take, are three winding points on the machine frame 9 in one Column arranged one above the other. Accordingly, there are also three each Supply coils 7 arranged one above the other on a creel 1.

Each processing point has a supply spool 7 on which a thermoplastic Thread 4 is wound. The thread 4 is over a head thread guide 12 under a certain tension by the first delivery mechanism 13 deducted.

The thread 4 is then through a deflection roller 11 to the twist stop device 65 deflected and passes through an elongated heating device 18. Here, the thread is heated to a certain temperature. The heater is designed as a high-temperature heater, in which the heating surface temperature is above 300 ° C. Such a heater is for example from the EP 0 412 429 (Bag. 1720). In this respect, reference is made to this publication taken.

A cooling device 19 is located behind the heating device 18 Cooling device 19 is designed as an elongated cooling rail. Between the heating device 18 and the cooling device 19, the thread over a pulley 11 passed so that the heater 18 and the cooling device 19 V-shaped are arranged to each other.

However, the texturing machine according to the invention is not limited to such an arrangement, but also allows any other assignment between the heating device and the cooling device, for example around to realize a straight thread run, as described later.

Behind the cooling device 19 is a schematically shown False twister 20. This false twister 20 can be used as a friction disc unit be carried out, as for example in EP 0 744 480 (Bag. 2322) is described.

Following the false twister 20, a second further delivery unit is used 21 to the thread 4 via both the heater 18 and the Cooling device 19 to pull. In the thread running direction behind the second Delivery unit 21 is a set heater 22. This set heater 22 can be designed as a curved heating tube, which from a heating jacket is surrounded, the heating tube from the outside with steam to a certain Temperature is heated. However, the set heater 22 could also be like that first heating device 18 can be designed as a high-temperature heater.

The thread 4 is here made by means of a further third delivery mechanism 23 pulled the set heater and conveyed to a winding device 9. In the winding device 9, the thread 4 is on a winding spool 25, which is driven by a friction roller 24, wound. Before the friction roller 24 is a traversing device, by means of which the thread on the Winding spool 25 back and forth and on this as a cross winding is wound up.

The supply plants 13, 21 and 23 are separate and the Process requirements accordingly with different, among themselves in a fixed ratio driven conveyor speeds. This drive can in a known manner with the help of continuous drive shafts happen, then the drive shafts of the three supplier groups 13, 21 and 23 with each other - for example through a change gear - are firmly coupled.

The swirl stop devices are in the exemplary embodiments relating to FIGS. 1 to 3 65 each designed as a conveyor roller 30, which is partially wrapped around by the thread 4 become. The thread 4 is in a zigzag-shaped thread running track guided on the circumferential surface of the conveyor roller 30 - as more precisely later described. The conveyor roller 30 is coupled to a drive 46.

In the exemplary embodiment in FIG. 1, the drive 46 is the swirl stop roller 30 connected to a control device 49. Between the twist stop roller 30 and the heating device 18 is a thread tension sensor 63 in the thread path arranged. The thread tension sensor 63 is connected to the control device 49 connected. In the embodiment shown in Fig. 1, the thread 4 withdrawn from the supply spool 7 with the delivery mechanism 13 and into the False twist zone promoted. The false twist is the thread 4 through that False twist unit 20 introduced. The false twist generated in this way runs counter to it the thread running direction back to the twist stop roller 30 the thread in the false twist state by the heater 18 and Cooling device 19 out. The thread is twisted in the Heater 18 stretches and fixes, resulting in a strong impression of the twist and thus leads to a good crimp result in the thread. By means of the thread tension sensor 63, the thread tension is immediately before Input to the heater 18 measured. This measured value is sent to the control device 49 abandoned when a discrepancy between controls the drive motor 46 of the swirl stop roller in accordance with a desired value, so that the desired thread tension is set. With this Arrangement processes can be run at extremely low Thread tension expire. The thread is pulled by means of the second delivery mechanism 21 pulled out of the false twist zone and then into a post-treatment zone e.g. led to the set heater 22 for shrinkage treatment of the thread. Here it could also be advantageous that before the input of the set heater an additional supplier is switched, so that a setting the conveyor speeds (lag) in the post-treatment zone possible, which is independent of the conveyor speed setting of the delivery plants in the false twist zone. Between the second delivery plant and the additional delivery plant in front of the set heater can advantageously be a Tangel nozzle can be arranged in the thread run to open the filaments to achieve better shrinkage treatment. After heat treatment the thread is wound up into a cheese 25 of the winding device 9.

The embodiment of the texturing machine according to the invention from Fig. 2 represents a further possibility compared to the exemplary embodiment from FIG. 1 the thread tension measurement in the false twist zone. Here is the Thread tension sensor 63 between the heater device 18 and the cooling device 19 placed. This variant is particularly advantageous if a predetermined thread tension can be set to cool the thread should.

3 shows a preferred embodiment, in which the twist stop roller 30 takes the thread 4 directly from the supply spool 7 subtracts. Here, the swirl stop device acts as the first delivery mechanism 13. The thread speed in the false twist zone is determined by the conveying speed the conveyor roller 30 and the second delivery mechanism 21 set. At a certain initial force to generate the frictional forces on the To get conveyor roller 30 could between the head thread guide 12 and the feed roller 30 a thread brake 50 may be arranged. This embodiment is characterized by a particularly simple structure and process flow out.

4 to 6 is a first embodiment of a swirl stop roller or Conveyor roller shown, for example in the embodiments of False twist texturing machine according to the invention of FIGS. 1 to 3 used could be. The swirl stop device consists of a conveyor roller 30, which has a zigzag-shaped thread running track 31 on its circumference. The zigzag-shaped thread running track 31 is formed in that on the Circumferential surface 36 of the conveyor roller alternately several thread guides 37 and 38 placed in the circumferential direction at equal distances from each other are (see Fig. 5). The thread guides 37 are with their guide edges 39 assigned to the end face 40 of the conveyor roller 15. The thread guides 38 are assigned with their guide edges 45 to the opposite end face 41. The leading edges 39 and 45 of adjacent thread guides are offset aligned to the center plane 43 overlapping, so that a thread that the Wraps around guide edges 39 and 45, a zigzag thread run on the circumference of the conveyor roller 15. As can be seen in FIG. 5, are the guide edges 39 and 45 of the adjacent thread guides formed that a notch 44 is formed in which the incoming thread 4 is caught and on the respective guide edges 39 or 45 on the Circumferential surface 36 can slide. Due to the multiple wrapping the thread guides 37 and 38 thus generate a frictional force that Takes up twist moment of the thread. The conveyor roller 30 is with a drive shaft 29 firmly coupled by a drive (not shown here) is driven. The thread tension in the thread is determined by the sliding or Stiction between the thread 4 and the peripheral surface 36 as well the sliding or static friction between the thread 4 and the thread guide elements 37 and 38 influenced. As a further parameter for influencing The thread tension can be the wrap angle between the thread inlet and the thread outlet on the conveyor roller 30 are predetermined. The Thread guide elements 37 and 38 are preferably made of ceramic materials.

The conveyor roller is attached to the end of a drive shaft 42. Here, the conveyor roller 30 is firmly coupled to the drive shaft 42 via a form-fitting plug connection. The plug connection between the conveyor roller 30 and the drive shaft 42 is secured by means of a locking ring 47. This makes it possible to replace the conveyor roller 30 with little effort.
It should be pointed out at this point that the frictional force required for conveying could also be generated in the delivery mechanism according to the invention by clamping the thread.

It is also possible the mutual arrangement of the thread guide elements 37 and 38 run unevenly, so that, for example, the wrap in partial areas of the conveyor roller by two successive arranged guide elements of a disc halved per guide element becomes.

The design of the conveyor rollers 30 is such that the thread tensile forces must be applied in one process stage, be transferred safely and slippage between thread 4 and conveyor roller 30 is avoided in order same delivery conditions from processing point to processing point as To create the prerequisite for a good product result. This will be particularly also achieved in that the thread track 31 on a geometrically unambiguously defined diameter and thus of Delivery plant to delivery plant exactly reproducible speed and Draw ratios are present. The roll diameter, the number and thus the division of the thread guides on the Roll circumference, roll width and also by the selected material the guide surfaces and the arrangement of the conveyor rollers in the thread run the wrap angle between thread inlet and thread outlet changed become. Leave regardless of the thread material (titer, residual stretching) the yarn delivery speeds and the yarn input tensions set individually at each processing point. This setting option is especially advantageous at the start of the process for threading Avoid thread tension peaks in the thread.

Another example of a swirl stop roller is shown in FIG. Here will the swirl stop roller by two coaxially to one another on a drive shaft 71 attached discs 72 and 73 formed. The discs have on the the thread guide elements 37 on the outer edge facing each other and 38. The thread guide elements 37 each have a guide edge 39, which in a circumferentially extending guide surface 69 ends. The offset opposite thread guide elements 38 have the thread guide edges 45, which are also in a circumferential direction extending guide surface 75 ends. The guide surfaces 69 and 75 are on one diameter and thus form a circumferential Contact surface for the thread. The thread guide elements 37 are over a Guide 28 coupled to the disc 72. The thread guide elements 38 are also coupled to the disk 73 via a guide 74. By radial adjustment of the thread guide elements, it is thus possible Diameter of the contact surface formed by the guide surfaces 69 and 75 to change the thread. Furthermore, the disks 72 and 73 slidable to each other so that the thread guide edges 39 and 45 cover more or less. This will increase the Thread wrapping reached on the thread guide elements 37 and 38. In addition to the variable speed of rotation, there are thus further parameters available for the twist stop device to the thread tension of the To influence thread.

A further exemplary embodiment of a swirl stop roller is shown in FIG. Here, the thread guide elements 37 are rotated with one another Ring connected. The thread guide elements 38 are also over a circumferential ring coupled together. The two ring-shaped Thread guide elements are here with the projecting guide edges 39 and 45 offset from each other so that they interlock. As a result, a notch 44 is formed, into which a tapering thread slides. Due to the deflection by means of the guide edges 39 and 45 the thread is then forced into a zigzag thread track. The Thread lies on the circumferential guide surface 69. The The thread can be wrapped around the guide edges 39 and 45 by axially displacing the thread guide elements 38 by an adjusting device 68 take place. The thread guide elements 38 are here a guide 67 connected to the conveyor roller 30. The conveyor roller 30 is again plugged onto a drive shaft 71. To secure the connection is between the conveyor roller 30 and the drive shaft 71 Circlip 47 is attached to the shaft end of the drive shaft 71.

For the embodiments of the false twist texturing machine according to the Figures 9 and 10 apply the following description.

The false twist texturing machine consists of a frame 2, one Process frame 3 and a winding frame 1. Between the process frame 3 and the winding frame 1, an operating aisle 5 is formed. On the for Operating aisle 5 opposite side of the winding frame 1 is the gate frame 2 arranged at a distance from the winding frame 1. Between the winding frame 1 and the gate frame 2 a doffgang 6 is thus formed.

The false twist texturing machine points in the longitudinal direction - in the figures the drawing plane is the same as the transverse plane - a multitude of processing points for one thread per processing point. The rewinder occupy a width of three processing points. Therefore are three winding devices 9 - this will be discussed later - Arranged one above the other in the winding frame 1.

Each processing point has a supply spool 7 on which a thermoplastic Thread 4 is wound. The thread 4 is over a head thread guide 12 and a guide roller 11 or a thread guide under one certain voltage deducted by the first delivery mechanism 13. By doing Embodiment according to Figures 9 and 10, the thread between the gate frame 2 and the first delivery mechanism 13 without pipe routing. However, pipe guides can also be used in this case of transporting the thread from the supply spool to the operating aisle be used.

A thread cutter 14 is in the thread path in front of the first delivery mechanism 13 arranged. The thread can be cut by the thread cutter 14, if in the course of the process between the first delivery plant 13 and the winding Disturbances occur.

The first delivery unit is designed here as a conveyor roller 30, which is on has a zigzag-shaped thread running groove 31 around its circumference, as follows is described in the description of Figures 3 to 6. in this connection the conveyor roller 30 is used at the same time as a twist stop to the by False twist 20 stop twist generated in the thread. Every processing point a conveyor roller 30 is assigned to each. The conveyor roller 30 is driven by an electric single drive (not shown here). The conveyor roller 30 and the drive are connected to a bracket 15 connected to a feed arm 16. There is also a on the feed arm arranged in the thread path in front of the conveyor roller 30 thread cutter 14. The feed arm 16 is connected to a carriage 32. The sled 32 is by a linear drive along the guide 33 between a - 9 - operating position 34 and an operating position 35 emotional. Thus, the thread can be used by an operator at the start of the process manually applied to the conveyor roller 30. Then the Conveyor roller 30 into its operating position 34 by means of the application device 17 method.

However, there is also the possibility that the drive, for example drives a group of conveyor rollers, stationary on the machine frame is attached. The conveyor rollers would then be in their respective operating positions can be coupled to the drive.

However, it is also possible for the first delivery plant to be stationary in the machine is arranged and for example over one for several processing points effective central drive is driven. At the start of the process is thus by means of a thread guide movable on the application device the thread from the operating position to the delivery plant. After that is done an application of the thread to the delivery plant.

It should be expressly mentioned that the first supplier works by others thread-promoting agents, e.g. Delivery waves or godets can.

In the thread running direction behind the first delivery mechanism 13 there is a first, elongated heater 18 through which the thread 4 runs, whereby the thread is heated to a certain temperature. The heater could be listed as a high temperature heater at which the heating surface temperature is above 300 ° C.

Behind the heater 18 is a cooling rail 19. Here are the Heater 18 and the cooling rail 19 in a plane one behind the other arranged that a substantially straight thread run occurs. Behind the cooling rail 19 is a schematically illustrated false twister 20th

Following the false twister 20, a second, further delivery unit is used 21, the thread 4 both over the heater 18 and the cooling rail 19 pull. In the thread running direction behind the second feed mechanism 21 there is a second heater 22 (set heater). This set heater can be used as curved heating tube, which is formed by a heating jacket is surrounded, the heating tube from the outside with steam to a certain Temperature is heated. The set heater 19 could be like the first heater 18 can also be designed as a high-temperature heater.

A compensating tube is connected to the second heater 22 in the thread running direction 29 seamlessly, as is known from EP 0 595 086 (Bag. 2045). This ensures that the thread 4 in the atmosphere of the heater 22 in the compensating tube 29 transported. In the kink between the heater 22 and the compensating tube 29 is the thread guide 28.

Another third is located at the outlet end of the compensating tube 29 Delivery plant 23. In front of or behind there is a preparation device (not shown), the thread 4 before entering a winding 9th repaired. In the winding device 9, the thread is on a winding spool 25, which is driven by a friction roller 24 on the circumference. In front of the friction roller 24 there is a traversing device 26, by means of which the thread 4 is guided back and forth on the take-up spool 25 and is wound on this as a cross winding.

In the false twist texturing machines according to the invention, one can below of the second heater 22 instead of the compensating tube 29 first instead of the Arrange the thread guide 28, the third delivery mechanism 23 and then a tangle nozzle and then provide another delivery facility. This makes it possible the treated thread with adjustable thread tension in the tangle nozzle by swirling air and swirling the filaments together to mix.

There is a platform 27 above the compensating tube 29, which serves as an operating aisle 5 serves. The operating aisle 5 is between the process frame 3 and the winding frame 1 formed. The cooling rail is above the aisle 5 19 arranged, which are essentially on the process frame 3rd supported. In the process frame are the false twist according to the thread course 20, the second delivery unit 21 and the second heater 22 are arranged. The process rack is characterized by the fact that it only such machine parts are located, which are used for thread treatment.

On the winding frame 1 is in the upper area on the 5 facing away from the first delivery plant 13 immediately before the entrance of the arranged first heater 18. The first heater 18 is again based from the take-up frame 1. According to the thread course is at the bottom At the end of the winding frame, the third delivery mechanism 23 in the winding frame 1 attached. Otherwise, the winding devices 9 are in the winding frame 3 arranged.

The winding device 9 has a coil store 8, which for The full bobbin is used when a full take-up reel 25 has been generated. To remove the full spool 25 the spindle carrier is pivoted and the full spool onto a unwinding track stored. The unwind path is part of the coil store 8. On the The full reel 25 waits for the unwind path until it is removed. That's why it is Unwind path of the coil store 8 arranged on the side of the winding frame 1, which are adjacent to the Doffgang 6 and from the operating aisle 5 turned away. Doffgang 6 extends along the winding frame 1 and is formed between the gate frame 2 and the winding frame 1. He serves to remove the full bobbins waiting on the bobbin storage 8. Furthermore, each winding device 9 is assigned a tube feed device 10, which is no longer described in detail. It is a matter of a sleeve memory on which several empty tubes are temporarily stored become. If a winding device 9 a full on the spindle carrier Coil generated and the full coil has been stored on the coil memory is, an empty sleeve is fed to the spindle carrier and thereon attached.

The arrangement of the frame parts lies in the false twist texturing machine according to the invention such that the thread from the supply spool to Winding device describes a 6-shaped path. The Threads from the frame frame in a straight run in one level over the winding frame 1 led to process rack 3. Here, the first delivery plant is 13 so involved in the thread course that the thread without essential Deflection from the deflection roller 11 on the frame 2 to the false twist unit 20 is performed on the process frame 3. Through this very thread-friendly Thread guidance can texturing speeds of greater than 1,200 m / min are driven.

The between the first delivery mechanism 13 and the top thread guides 12 Arranged pulley 11 can also be replaced by a thread guide become.

A particular advantage of the false twist texturing machine is that the process frame 3 is arranged on an outside of the machine. Thereby can - as shown in Fig. 10 - advantageously a double machine form. The process frames of the machine halves are immediate arranged side by side so that the electrical drive components for the false twister and the delivery plants centrally in one on the process frame arranged control cabinet are integrated. The second half of the machine is thus placed in mirror image on the first half of the machine.

The false twist texturing machine according to FIG. 11 is the structure of the False twist texturing machine according to FIG. 9 very similar, so that on the Description to FIG. 9 is referred to at this point.

In the false twist texturing machine according to FIG. 11, the delivery mechanisms 13 are 21 and 23 designed as a conveyor roller 30 each having a circumference has zigzag-shaped thread running groove 31, as previously in the description 4 to 6 is described. They are one processing point Assigned conveyor rollers 30.1, 30.2 and 30.3. The conveyor rollers 30 are each driven by an electric single drive 46.

The conveyor roller 30.1 and the drive 46.1 are via a bracket 15 connected to a feed arm 16. This is also on the feed arm a thread cutter 14 arranged in the thread path in front of the conveyor roller 30.1 attached. The feed arm 16 is connected to a carriage 32. The Carriage 32 is interposed by a linear drive along the guide 33 one - as shown in Fig. 11 - operating position 34 and one Operating position 35 moves. Thus, the thread can start from one Operator to be manually placed on the conveyor roller 30.1. Subsequently the conveyor roller 30.1 is in its operating position by means of the application device 17 34 procedure.

However, there is also the possibility that the drive 46.1 is stationary is attached to the machine frame. The conveyor rollers 30.1 would then be in theirs each operating position can be coupled to the drive.

To further increase flexibility in the processing point, both the winding device 9 and the false twist unit 20 independently are driven by the neighboring processing points. The winding device 9 has two drives for this purpose. The first drive serves to drive the friction roller 24. This drive is advantageous by a Axle motor formed, which is integrated in the axis of the friction roller. the second Drive is used to drive the traverse 26. This drive Could be a stepper motor, the a thread guide by means of a belt drive drives back and forth. This arrangement allows the individual Setting options of the supplying plants used to be different Making yarns within a texturing machine.

The cross section of a further exemplary embodiment is shown schematically in FIG the false twist texturing machine according to the invention shown. in this connection are the individual components of the machine to that shown in Fig. 11 Machine identical. To this extent, it will refer to the description of the exemplary embodiment 11 referenced. The arrangement of the components 12 leads to a kinking Thread course between the heater 18 and the cooling rail 19. The thread is transported through the machine by the delivery mechanisms 13, 21 and 23. Here, the thread 4 by the first delivery mechanism 13 of the Supply spool 7 subtracted. Between the supply spool 7 and the first Delivery mechanism 13 has a thread brake 50 in order to have a minimum thread tension build.

The delivery plants 13, 21 and 23 are in turn each by a conveyor role with a zigzag thread track on the circumference of the roll educated. Here are 30 deflection rollers in front of and / or behind the conveyor roller 11 arranged to fix the degree of wrap on the conveyor roller. Each of the conveyor rollers 30 is driven by an electric motor 46. The electric motors 46 of a processing point are included connected to a control device 49. Through the control device 49 the drives 46 the respective desired conveying speeds of the rollers 30 given up. The stretching ratio set between the conveyor roller 30.1 and 30.2 is thus kept essentially constant.

In addition to the thread speed, there is also the option of To control conveyor rollers 30 depending on the thread tension. For this a thread tension sensor could be arranged in or behind the false twist zone his who gives his signals to the control device 49.

A preparation device is arranged in front of the third delivery unit 23 , The preparation device consists of a preparation roller 51. The preparation roller 51 is driven by the roller motor 52. The Preparation roller 51 is arranged such that the thread 4 has its surface affected. A tub 53 is attached below the preparation roller 51 is filled with the preparation. By rotating the preparation roller 51 is thus preparation on the surface of the roller from the tub 53 carried away and brought into contact with the thread 4. This arrangement has the advantage that the threads of the processing point are individually prepared can be without the threads in the adjacent processing point be influenced.

13 shows a further exemplary embodiment of a false twist texturing machine shown. The arrangement of the frame parts and components corresponds essentially to the embodiment variant according to FIG. 11 refer to the description of FIG. 11.

In the embodiment of the false twist texturing machine according to FIG. 13 are the second heater 22 and the first heater 18 to a heater module summarized. For this purpose, the thread 4 after passing the false twist unit deflected at the delivery unit 21 by 360 °. Here the Thread 4 from an additional delivery unit 48 from the second delivery unit 21 deducted and promoted to the second heater 22. The one for post heat treatment Required thread tension is between the delivery 48th and the third delivery mechanism 23 set. The thread 3 then runs from into the winding device 9 at the top.

The delivery mechanisms 13, 21, 48 and 23 are through the conveyor rollers 30.1 to 30.4 formed. Each of the conveyor rollers 30.1 to 30.4 has a drive 46.1 to 46.4 connected. The motors 46 are actuated again via a central control device (not shown here).

FIG. 14 shows a further exemplary embodiment of a control concept a false twist texturing machine shown in Figure 11. With this arrangement are the first supplying plants adjacent in the long side of the machine 13.1, 13.2 and 13.3 shown per processing point. The delivery plants 13.1, 13.2 and 13.3 are each driven by a drive 46. Each Drive 46 is assigned to a control device 49. So that exists Possibility to control each of the delivery plants individually. The control devices 49.1, 49.2 and 49.3 are with a central machine control unit 54 connected. The machine control unit 54 can thus be used for individual control of the suppliers 13.1, 13.2 and 13.3 intervene directly. So that is collective adjustment of the delivery plants possible. Such an arrangement is also particularly suited to a controlled in the event of a power failure Brake the supplying plants. This is done with the machine control device 54 coupled energy buffers to each yarn feeder activated so that controlled braking is possible. The The energy buffer is provided with the control device 49 assigned to the delivery plant connected.

In order to feed the feed plants from a threading speed after threading to switch to the required operating speed, the Control devices predefined time functions with which each of the supplying plants is controlled. In particular, the speed ratio between the first delivery plant and the second delivery plant, which is the drawing of the thread in the false twist zone determined only shortly before reaching the final operating speed within the processing point set. The time function can be a ramp-like, progressive one or cause a degressive change in the rotational speed.

In the exemplary embodiment of a control concept shown in FIG. 14 The false control texturing machine can be the individual control devices 49.1, 49.2 and 49.3 also combine into a single control device. Such an arrangement is used in particular when only a collective adjustment of the delivery plants is required.

This is particularly the case with the false twist texturing machine according to FIG. 11 To be able to carry out a careful thread application for example, as shown in FIG 55 assigned. The thread transfer device 55 can be made from consist of a pivot arm 56 which is pivotable on a pivot axis 58 is stored. The pivot axis 58 is in the machine frame of the texturing machine attached. At the opposite free end of the swivel arm 56 a thread guide 57 is attached. The thread guide 57 can by Pivotal movement of the swivel arm 56 penetrate the thread plane. Here, depending on the position of the swivel arm 56, the thread 4 on the Thread guide 57 folded so that one depending on the position of the swivel arm, the wrap angle is set on the roller 30 sets. Because the wrap angle on the roller 30 increases the height of the transmitted pressure forces can be influenced with the thread deflecting device also affect the thread tension in thread 4. The Swivel arm 56 could be connected to a drive that with a control device and a thread tension meter in a control loop is switched. With such a regulation, each can be used for the process required thread tension directly through the size of the wrap angle adjust on the roller 30.

In Figure 16, another exemplary embodiment is a drive of a conveyor roller 30 shown. For this purpose, the conveyor roller 30 is attached to a shaft 60. The shaft 60 is at a free end in a bearing 62 on the machine frame stored. At the opposite free end is the shaft 60 coupled to a drive 59. The drive 59 could here by a pneumatically operated turbine are formed. In the section of the shaft 60 between the conveyor roller 30 and the drive unit 59 engages Eddy current brake 61 on shaft 60. Thus, in a simple way the peripheral speed of the conveyor roller can be controlled. The drive unit 59 drives shaft 60 with a constant drive torque on. The peripheral speed of the conveyor roller is now by more or less severe braking of the drive shaft 60 controlled.

17 is a further embodiment of an inventive False twist texturing machine shown. One machine half is one semi-automatic false twist texturing machine shown. Because both machine halves are placed in mirror image to each other, only half of the Double machine shown and described in Fig. 17.

As already described for FIG. 9, the machine has a gate frame 2, a winding frame 1 and a process frame 3. In the gate frame 2, a plurality of supply coils 7 are arranged one above the other in tiers. Between the gate frame 2 and the winding frame 1 there is an operating / opening 5 formed. These are on one level above the machine frames first delivery unit 13, the heating device 18 and the cooling device 19 arranged. A false twister 20 and a second delivery mechanism 21 are supported on the process rack 3. The process frame 3 is on the gate frame arranged opposite side of the winding frame. winding frame 1 and process frame 3 are joined together directly. In the process rack a second heater 22 is arranged below the second delivery unit 21. The winding frame 1 serves to accommodate the winding device 9. Here, in turn, several winding devices are on the floor arranged one above the other. The thread is in each of the winding devices wound into a bobbin 25. The thread spool 25 is on a spindle arranged, which is driven by a friction roller 24. In front of the thread spool a traversing device 26 is inserted in the thread path.

In this arrangement, the first delivery mechanism 13 is provided by a conveyor roller 30 educated. The conveyor roller 30 is on with a drive (not shown here) attached to a height-adjustable slide 32. The carriage 32 can along the guide 33 between an operating position 35 and the operating position 34 are moved.

In this arrangement, the thread 4 is in the straight course of the thread Head thread guides 12 of the creel frame 2 guided to the conveyor roller 30 and from there enters the false twist zone of the machine. The false twist zone is limited by the false twist unit 20 and the conveyor roller 30. The heating device 18 and the cooling device are within the false twist zone 19 arranged in one plane. At the exit of the cooling device 19 the wrongly twisted thread arrives via a deflection roller 11 False twist unit 20. The second delivery unit 21 leads the thread from the False twist zone in the downstream second heater 22. From there the thread via a third delivery mechanism 23 to the winding device 9. In the winding device 9 then turns the thread into a thread spool 25 wound. After the coils 25 are completely wound, by means of a Doffers the bobbin change carried out on the false twist texturing machine. For this purpose, several handling devices are arranged on the doffer, which are preferably operated pneumatically. When changing bobbins the doffer in the operating / doffgang 5 so that by means of the handling devices the spool change in each winding device 9 simultaneously is carried out. To do this, the threads first become a bundle merged, cut and vacuumed. The full coils are unlocked and taken. An empty tube is then placed in each winding device inserted. The threads are inserted for winding. Any activity is carried out by the handling equipment of the doffer. The new winding process in the rewinder can begin.

This semi-automatic false twist texturing machine can also be used realize particularly gentle yarn processing. By arranging the first delivery plant immediately before the heater entrance of the heating device 18 and above the creel 2 is a thread run with few deflections realized.

LIST OF REFERENCE NUMBERS

1

winding frame

2

creel frame

3

process frame

4

thread

5

service aisle

6

Doffergang

7

supply bobbin

8th

coil storage

9

takeup

10

Sleeve feeder

11

idler pulley

12

Yarn guide

13

first delivery plant

14

thread cutter

15

bracket

16

Anlegearm

17

applier

18

first heater, heating device

19

Cooling rails, cooling device

20

false twister

21

second delivery plant

22

second heater, set heater

23

third delivery plant

24

friction roller

25

up reel

26

Traversing device

27

platform

28

thread guides

29

balance pipe

30

Conveyor roller, swirl stop roller

31

Yarn track

32

carriage

33

guide

34

operating position

35

operating position

36

peripheral surface

37

thread guides

38

thread guides

39

leading edge

40

front

41

front

42

drive shaft

43

midplane

44

notch

45

leading edge

46

Drive, motor

47

circlip

48

delivery mechanism

49

control device

50

thread brake

51

applicator roll

52

roller motor

53

tub

54

machine control

55

yarn deflection device

56

swivel arm

57

thread guides

58

swiveling axes

59

drive unit

60

wave

61

Eddy current brake

62

camp

63

Yarn tension sensor

65

Twist stop device

66

Spulhebel

67

guide

68

adjustment

69

guide surface

70

guide

71

drive shaft

72

disc

73

disc

74

guide

75

guide surface

Claims (59)

1. False twist texturing machine for texturing synthetic threads with a plurality of processing stations, each of which has a twist stop device (65), a heating device (18), a cooling device (19) and a false twist unit (20) in a processing station inside a false twist zone, the false twist returning inside the false twist zone in the thread (4) being braked by means of the twist stop device (65), and the thread (4) being taken-off from the false twist zone by means of a feed unit (21) and being guided to a winding device (9), characterised in that the twist stop device (65) is a rotatable conveying roller (30) which is at least partially looped by the thread (4) in the peripheral direction and which can be driven by a drive (46) in such a way that the thread (4) is braked or conveyed.
2. False twist texturing machine according to claim 1, characterised in that the conveying roller (30) has at the periphery at least a peripheral zigzag-shaped thread running track (31), so the thread in the looped region of the conveying roller (30) is guided in a zigzag-shape on the peripheral face (36) of the conveying roller (30).
3. False twist texturing machine according to claim 2, characterised in that the conveying roller (30) has at the periphery a plurality of thread guide elements (37, 38) forming the thread running track (31) which with their guide edges (39, 45) contact the thread (4) in the deflection points of the thread running track (31).
4. False twist texturing machine according to claim 3, characterised in that the thread guide elements (37, 38) are rings which are pushed onto the conveying roller (30) from the two end-face sides (40, 41) of the conveying roller (30) and between them form the thread running track (31).
5. False twist texturing machine according claim 2, characterised in that the conveying roller (30), consists of two discs (30, 32), in that the discs (30, 32) at the outer edge have laterally projecting thread guide elements (37, 38) and in that the discs (30, 31) are fixed to one another in such a way that the thread running track (31) is formed.
6. False twist texturing machine according to claim 3 to 5, characterised in that the thread guide elements (37, 38) can be adjusted in such a way that the diameter of the thread running track (31) and/or the peripheral looping of the thread (4) on the conveying roller (30) changes.
7. False twist texturing machine according to any one of claims 3 to 6, characterised in that the thread guide elements (37, 38) can be adjusted in such a way that the looping of the thread (4) at the thread guide edges (39, 45) changes.
8. False twist texturing machine according to any one of claims 1 to 7, characterised in that a moveable thread deflection device (55) in the thread course is arranged directly upstream or downstream of the conveying roller (30) in such a way that the looping angle on the conveying roller (3) can be changed by the thread deflection device (55).
9. False twist texturing machine according to claim 6, characterised in that the looping of the thread (4) on the thread guide edges (39, 45) has a radius of curvature of at least 1.5 mm.
10. False twist texturing machine according to any one of claims 2 to 9, characterised in that the (course?) described by the thread running course (31) alternating in a zigzag manner to the one or other end-face side (40, 41) of the conveying roller (30) has an identical angle of at least 100°.
11. False twist texturing machine according to any one of claims 1 to 10, characterised in that the peripheral face (36) of the conveying roller (30) guiding the thread has a diameter of at least 40 mm.
12. False twist texturing machine according to any one of claims 1 to 11, characterised in that the conveying roller (30) has on the periphery a plurality of zigzag-shaped thread running tracks arranged next to one another in parallel.
13. False twist texturing machine according to any one of claims 1 to 12, characterised in that the regions of the conveying roller (30) and the thread guide elements (37;38) contacted by the thread (4) have an abrasion-resistant coating against wear.
14. False twist texturing machine according to claim 1, characterised in that the conveying roller is designed as a galette which has an approach edge laterally supporting the looped thread.
15. False twist texturing machine according to any one of claims 1 to 13, characterised in that the drive (46) is connected to a control device (49) which is enclosed in a control circuit with a thread tensile force sensor (63) and controls the drive (46) as a function of the output signal of the thread tensile force sensor (63).
16. False twist texturing machine according to claim 15, characterised in that the thread tensile force sensor (63) is arranged inside the false twist zone, in particular upstream from the heating device (18).
17. False twist texturing machine according to claim 16, characterised in that the thread tensile force sensor (63) is arranged between the heating device (18) and the cooling device (19).
18. False twist texturing machine according to any one of claims 1 to 13, characterised in that the conveying roller (30) takes off the thread (4) directly from the take-off spool (7), the thread rate and the drawing ratio in the false twist zone being adjusted between the conveying roller (30) and the feed unit (21) connected downstream from the false twist zone.
19. False twist texturing machine according to claim 18, characterised in that the drive (46) drives a plurality of conveying rollers of a plurality of processing stations combined into a group.
20. False twist texturing machine according to claim 18, characterised in that the drive (46) is connected to a conveying roller (30) and in that each conveying roller (30) of a processing station can be driven independently of adjacent conveying rollers (30) of the processing station and independently of adjacent conveying rollers of adjacent processing stations.
21. False twist texturing machine according to any one of the preceding claims for texturing thermoplastic threads with a plurality of processing stations which each comprise a take-off spool (7), a first feed unit (13), an elongated first heater (18), an elongated cooling rail (19), a false twister (20), a second feed unit (21) and a winding device (9), characterised in that the first feed unit (13) is formed by a conveying roller (30) which has been partially looped by the thread (4) in the peripheral direction with at least one zigzag-shaped thread running track (31) at the periphery, in that the conveying roller (30) is connected to a drive (46) and in that each conveying roller (30) of a processing station can be driven independently of the second feed unit (21) of the processing station and independently of adjacent conveying rollers of adjacent processing stations.
22. False twist texturing machine according to claim 20 or 21, characterised in that the conveying roller (30) is connected to the drive (46) so as to be capable of coupling and/or detaching.
23. False twist texturing machine according to any one of claims 20 to 22, characterised in that the drive is designed as an electric motor (46).
24. False twist texturing machine according to claim 20 or 22, characterised in that the drive consists of an eddy current brake (61) with a drive unit (59).
25. False twist texturing machine according to any one of claims 18 to 24, characterised in that the conveying roller (30) in the processing station can be operated by means of a height-adjustable, feed device (17) in such a way that the thread (4) can be inserted at the start of the process onto the conveying roller (30) by the feed device (17).
26. False twist texturing machine according to claim 25, characterised in that the conveying roller (30) designed as the first feed unit, the heating device (18) and the cooling rail (19) are arranged one behind the other in one plane to produce straight thread course and in that the conveying roller (30) is arranged at the side of a winding frame (1) of the machine remote from an operating passage (5) and can be operated by means of the feed device (17).
27. False twist texturing machine according to any one of the preceding claims, for texturing a plurality of thermoplastic threads in a respective processing station which comprises a take-off spool (7), a first feed unit (13), an elongated first heater (18), an elongated cooling rail (19), a false twister (20), a second feed unit (21), and a winding device (9), wherein the false twist texturing machine is composed of a creel frame (2), a winding frame (1) and a processing frame (3) in such a way that a plurality of take-off spools are arranged one above the other in the creel frame (2) and that a plurality of winding devices (9) are arranged one above the other in the winding frame (1), the first feed unit (13) and the first heater (18) being supported on the winding frame (1) and the cooling rail (19) being arranged above an operating passage (5) formed between the winding frame (1) and the processing frame (3), characterised in that the first feed unit (13), the first heater (18) and the cooling rail (19) are arranged one behind the other in one plane to produce a straight thread run and in that the first feed unit (13) is arranged at the side of the winding frame (1) remote from the operating passage (5) and can be operated by means of a feed device (17).
28. False twist texturing machine according to any one of claims 25 to 27, characterised in that the feed device (17) can be operated from the operating passage (5).
29. False twist texturing machine according to any claim 27 or 28, characterised in that the creel frame (2) is arranged opposite the winding frame (1) on the side of the first feed unit (13), a doffing passage (6) being formed between the creel frame (2) and the winding frame (1).
30. False twist texturing machine according to claim 29, characterised in that the first feed unit (13) takes off the thread (4) from the take-off spool (7) via a deflecting roller (11) and conveys it to the first heater (18) without deflection.
31. False twist texturing machine according to any one of claims 26 to 30, characterised in that the first feed unit (13) is fastened in a holder (15) which is rigidly connected to a height-adjustable feed arm (16) of the feed device (17) and in that the first feed unit (13) can be adjusted between an operating position (35) and an operating position (34) by means of the height-adjustable feed arm (16).
32. False twist texturing machine according to claim 31, characterised in that the drive (46) of the conveying roller (30) is rigidly connected to the height-adjustable feed arm (16) of the feed device (17).
33. False twist texturing machine according to any one of claims 26 to 32, characterised in that a thread cutter (14) is arranged in the thread course upstream from the first feed unit (13).
34. False twist texturing machine according to any one of claims 31 to 33, characterised in that the thread cutter (14) is rigidly connected to the height-adjustable feed arm (16) of the feed device (17).
35. False twist texturing machine according to any one of claims 27 to 34, characterised in that the first feed unit (13) in each processing station can be driven by means of an individual drive.
36. False twist texturing machine according to any one of the preceding claims, characterised in that the second feed unit (21) is formed by a conveying roller (30.2) partially looped by the thread (4) in the peripheral direction, with at least one zigzag-shaped thread running track (31) at the periphery, in that the conveying rollers (30.1;30.2) are connected to a respective drive (46.1;46.2) and in that each conveying roller (30.1;30.2) of a processing station can be driven independently of the adjacent conveying rollers of the processing station and independently of adjacent conveying rollers of adjacent processing stations.
37. False twist texturing machine according to any one of claims 20 to 26, characterised in that the drives (46) of a processing station are connected to a control device (49) and can be driven independently of one another by the control device (49).
38. False twist texturing machine according to claim 37, characterised in that the control device (49) of a processing station is connected to a machine control unit.
39. False twist texturing machine according to either of claims 37 or 38, characterised in that the control device (49) of a processing station is connected to an energy buffer which allows controlled deceleration of the drives (46) in the event of power loss.
40. False twist texturing machine according to any one of claims 36 to 39, characterised in that the conveying rollers (30) of a processing station are driven at substantially the same rate when the thread is fed in (4).
41. False twist texturing machine according to any one of claims 36 to 40, characterised in that at least one of the conveying rollers (30) of a processing station is looped by the thread (4) at a looping angle greater than/equal to 180°.
42. False twist texturing machine according to any one of claims 1 to 41, characterised in that each processing station downstream from the second feed unit (21) has a second heater (22) and a third feed unit (23) designed as a conveying roller (30.3).
43. False twist texturing machine according to claim 42, characterised in that the second heater (22) is supported on the processing frame (3) and the third feed unit (23) on the winding frame (1).
44. False twist texturing machine according to claim 42 or 43, characterised in that a further feed unit (48) designed as a conveying roller (30) is arranged between the second feed unit (21) and the second heater (22).
45. False twist texturing machine according to any one of claims 1 to 44, characterised in that the winding device (9) and the false twister (20) of a processing station are driven by individual drives.
46. False twist texturing machine according to claim 45, characterised in that the friction roller (24) of the winding device (9) can be driven by a drive arranged axially in the friction roller (24).
47. False twist texturing machine according to claim 45 or 46, characterised in that the jig motion device (26) of the winding device (9) is driven by a stepping motor.
48. False twist texturing machine according to any one of claims 1 to 47, characterised in that a roller preparation device (51) is arranged upstream from the winding (9) and is driven by means of a roller motor (52).
49. False twist texturing machine according to any one of claims 1 to 48, characterised in that the conveying roller (30) has at the periphery a plurality of thread guide elements (37, 38) forming the thread running track (31) which with their guide edges (39, 45) contact the thread (4) in the deflection points of the thread running track (31).
50. False twist texturing machine according to any one of claims 1 to 49, characterised in that a thread brake (50) is arranged in the thread course upstream from the conveying roller (30) and in that the thread brake (50) is adjustable in design to change the thread tension.
51. Method for texturing a synthetic thread, in which the thread is taken off from a take-off spool, heat-treated in a first heater and cooled in a cooling device, in which the thread runs through a false twist unit after cooling, the false twist in the thread returning inside a false twist zone up to a twist stop device, and in which the thread is taken off the false twist zone by means of a feed unit and conveyed to a winding device, characterised in that the thread tensile force inside the false twist zone can be adjusted by means of the twist stop device inside the false twist zone.
52. Method according to claim 51, characterised in that the thread tensile force of the thread is greater, equal or smaller in the false twist zone than the thread tensile force upstream from the false twist zone.
53. Method according to claim 51 or 52, characterised in that the thread tensile force can be controlled by means of a driven conveying roller.
54. Method according to claim 53, characterised in that the drive of the conveying roller is connected to a drive control which drives the drive as a function of the output signal of a thread tensile force sensor in such a way that the thread tensile force remains substantially constant inside the false twist zone.
55. Method according to claim 53 or 54, characterised in that the thread rate in the false twist zone is determined by the driven conveying roller and the feed unit connected downstream from the false twist zone.
56. Method for feeding a thread in a processing station of a false twist texturing machine, characterised in that the feed units of the processing station are controlled by respective individual drives and in that the thread is inserted into the processing station at a feed rate of the feed unit.
57. Method according to claim 56, characterised in that the feed rate of the first feed unit is equal to the feed rate of the second feed unit.
58. Method according to claim 56 or 57, characterised in that a changeover takes place from the feed rate to an operating rate according to a predetermined time function.
59. Method according to claim 58, characterised in that the time function for controlling the feed unit is predetermined in such a way that the draw ratio defined by the rate difference of adjacent feed units is only adjusted upon reaching the operating rate.

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