EP1144295A3

EP1144295A3 - Method for continuously unwinding a thread

Info

Publication number: EP1144295A3
Application number: EP99947449A
Authority: EP
Inventors: Manfred Stüttem
Original assignee: Barmag AG; Barmag Barmer Maschinenfabrik AG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 1998-10-09
Filing date: 1999-10-01
Publication date: 2002-08-28
Anticipated expiration: 2019-10-01
Also published as: JP2003526584A; JP4651817B2; US6536087B2; CN1328524A; KR100690214B1; KR20010080062A; CN1239365C; TW440616B; DE59911886D1; WO2000021866A8; WO2000021866A3; TR200100962T2; US20010037545A1; EP1144295A2; EP1144295B1; WO2000021866A2

Abstract

A thread (1) is unwound from a supply bobbin (2). The end (6) of the thread of the supply bobbin (2) is joined to the start (7) of the thread of a reserve bobbin (3) by a knot-type joint (5), in order to ensure that the line is continuous for working or processing. A sensor (4) is provided and detects the passing over of the thread from the supply bobbin (2) to the reserve bobbin (3) after the supply bobbin (2) has run out and indicates this accordingly.

Description

Process for continuously pulling a thread

The invention relates to a method and an apparatus for continuously withdrawing a thread from a supply spool, as well as a method and a texturing machine for texturing a synthetic multifilament thread

The method and the device for pulling off a thread are known and are used in textile machines in which a thread placed in front is worked or processed. Here, the thread is drawn off continuously from a supply spool and fed to the subsequent process. To ensure a continuous process sequence, the thread end is the supply spool is knotted with the start of the thread of a second supply spool, which is referred to here as the reserve spool, after the supply spool has expired there is an automatic overflow to the reserve spool, the end of the thread in turn being knotted at a thread start of another spool, so that the process runs continuously the knot-like bindings during the subsequent processing or processing of the thread represent problem areas which can lead to defects in the finished product. In extreme cases, the binding can become loose, so that a thread breakage occurs

When texturing a thread, the thread is treated intensively in the machining process. In this method, a crimped thread is produced from a plain thread. For this purpose - as is known, for example, from EP 0 641 877 - the thread is twisted and thermally treated for fixing in the twisted state between a thread end of a supply spool and a thread start of a second supply spool (reserve spool) Twist distribution, which results in an uneven crimp. Such imperfections can lead to color defects, for example, in the further processing of the crimped yarn

Accordingly, it is an object of the invention to provide a method and an apparatus of the type mentioned at the outset for continuously withdrawing a thread, which ensure that a thread of uniform quality is fed to the subsequent process

Another object of the invention is to provide a method and a texturing machine for texturing a synthetic thread in order to produce certain packages with crimped yarn which can be assigned to the supply spool and are made from predetermined supply spools with a smooth yarn

According to the invention, this object is achieved by a method having the features according to claim 1 and a method having the features according to claim 14, and by a device having the features according to claim 21 and a texturing machine according to claim 26

The invention is characterized in that a signal appears after subtracting the complete supply spool. This indicates, for example, to an operator that a change in the yarn being prepared is imminent in the machining or processing process. This provides an association between the finished or end product and the supply spool The operator can take measures to avoid possible fault events due to the knot-like binding in the thread. To detect the transition from the supply spool to the reserve spool, a sensor is used that signals the thread transition from the supply spool to the reserve spool (yarn change)

In principle, three different method variants according to the invention can be used here. In a first method variant According to claim 2, the thread is continuously passed through the sensor. The sensor is designed such that when the knot-shaped binding, which represents the thread end of the supply spool and the thread start of the reserve spool, a signal is generated by the sensor. This method variant has the advantage that the thread can be sensed anywhere at any point in the machine. It is also possible to use a device of the subsequent process that detects a process parameter, for example a thread tension. Here, the discontinuity of the signal of the device is evaluated in order to indicate the passage of the binding

A further advantageous method variant is given by claim 3 Here, only a partial piece of the thread, which consists of a piece of thread at the thread end of the supply spool and a thread piece at the beginning of the thread of the reserve spool, is guided by the sensor. For this purpose, the sensor is arranged between the supply spool and the reserve spool Da When the supply spool is withdrawn, the thread end of the supply spool and the thread start of the reserve spool lie loosely in a loop between the two bobbins, this method variant offers a possibility of sensing the thread only immediately before changing the thread. This minimizes the influence of the sensation on the thread

A particularly simple and effective embodiment of the invention is given by the method variant according to claim 4. Since the thread end of the supply spool and the thread start of the reserve spool stand still during the withdrawal of the supply spool, the movement of a piece of thread in the area can already be used to signal the yarn change This variant of the method is characterized in particular by the fact that simple device parts are required for implementation. For this purpose, the thread piece can, for example, be inserted into a sensor which generates a signal as soon as the thread piece is no longer present At this point it should be mentioned that the method can be carried out independently of the design of the sensor. For example, mechanical, optical or capacitive sensors can be used which generate an electrical, mechanical or pneumatic signal

To perceive the signal by an operator, it is further proposed that the signal activate a signal generator in order to be displayed optically or acoustically

In a particularly advantageous development of the invention according to claim 7, the signal of a control of the process is given in order to prepare or initiate an intervention in the process. This method variant is particularly advantageous in the case of automatic processes. This can be achieved, for example, by the empty supply spool being replaced by a new bobbin is replaced, the beginning of the thread is knotted to the end of the reserve bobbin. It is also possible to document the yarn overflow, for example, the position and the time are recorded and saved. This data can form the basis for a further evaluation in quality management

The process variant according to claim 8 is particularly advantageous in processes in which the binding leads to faulty events or in which an assignment between the original yarn and the finished or end product has to be maintained. In the case of a pending signal, the process is interrupted for a period of time, for example with a In the process, a textured smooth yarn is textured and then wound as a crimped yarn on a spool. In such machines, several end spools are wound with crimped yarn from a supply spool. It is necessary for the spool to be changed in the winding discharged as waste in a suction device. It is now due to the method variant according to the invention possible to initiate a bobbin change in the reel in such machines. The particular advantage here is that the part of the thread that contains the binding can thus be removed as waste

A further advantageous development of the invention provides that a monitoring mechanism is initiated in the subsequent process which detects certain quality parameters in order to maintain a uniform quality. In the event of an inadmissible deviation of the quality parameter, for example the thread tension, a process change or a process interruption can be initiated. Process parameters can be initiated as quality parameters such as thread speed, thread tension or product parameters such as thread temperature

In order to ensure an association between the yarn of the supply bobbin and the respective product, the method variant according to claims 1 1 and 12 is particularly advantageous

Signal a change of the supply spool and a registration of the new one

Supply spool causes For this purpose, for example, a changing device can be activated, which selects a supply spool with a specific yarn and changes to the empty position of the withdrawn supply spool

Possibility to relate the material-specific events in the process to the respective preliminary product in addition to the assignment between the submitted yarn and the end product.However, the registration of the new supply spool can also be done via manual input of labels of the respective supply spool.The registration remains advantageously stored within the control unit until the thread has passed the replaced supply spool is removed

The invention is preferably used in processes in which a thread is processed, which is subsequently led to a final product in a further processing process. This is a method for texturing a multifilament synthetic thread is possible, in which the winding produced can be precisely specified with regard to its raw material with respect to the supply spool. The method according to the invention is thus characterized in particular by the fact that windings with crimped yarn can be produced which have a thread from start to finish with a uniform high If the monitoring of a quality parameter does not result in an inadmissible deviation of the quality parameter caused by the binding, the winding is produced without interruption.If the quality parameter is exceeded or, in general, if the thread overflow signal is present, the curled can be wound up Thread can be interrupted, for example, by an automatic change of the winding

When texturing synthetic thread, machines are used in which numerous processing points are arranged next to one another on levels. When using such machines, the method variant according to claim 15 can be used particularly advantageously to texturize the thread continuously. Each winding device is assigned two feed points, in which the supply spool and the reserve spool are arranged. The registrations of the supply spool and the reserve spool are linked to the respective reference locations and stored in the control system, so that the generated winding can be specified precisely with regard to the raw material based on the currently active reference location

The method variant according to claim 16 is particularly advantageous for sorting the windings. Thus, the binding in the thread can be specified by a winding time and a thread length, which, for example, can be attached to the winding as a data printout

In the event that several windings are produced from one supply spool, the method variant according to claim 17 is preferably used Every winding that has arisen from a supply spool, a marking The marking is changed when the yarn change is signaled for the following windings, since these are produced from a different submitted thread. With this, the crimped thread can be used up to the spinning process in which the plain yarn is produced was traced

A further sorting of the reels produced can be achieved in that the reel containing the yarn change and thus the binding in the thread is given additional identification. Such a sorting is particularly advantageous, for example in order to distinguish between warp and weft bobbins during weaving

Labeling can be done easily by numbering, which is restarted after each thread overflow

A device with the features according to claim 21 or a texturing machine with the features according to claim 26 is used to carry out the method according to the invention. The device according to the invention according to claim 21 is characterized in that different yarns can be processed in succession in one process without major interruption a sensor is provided which detects and signals the thread transition from the yarn of the supply spool to the yarn of the reserve spool

In order to arrange the sensor for sensing the thread in the device, two different design variants of the device according to the invention, depending on the sensor type, are possible in principle. In the case of a sensor that continuously scans the thread, the design of the device according to claim 22 is particularly preferred Arrange claim 23 the sensor between the supply spool and the reserve spool. This is the thread piece that consists of the thread end of the supply spool and the beginning of the thread of the reserve spool is formed and remains in a loop between the bobbins, scanned in a simple manner by detecting the movement of the thread piece by the sensor

So that appropriate measures can be initiated when changing yarn, the sensor is connected to a signal transmitter according to the development according to claim 24

In the case of automatically running processes, it is preferable to design the device according to claim 25

Another solution to the underlying problem is also given by a texturing machine with the features according to claim 26. Since the refining of the thread in the texturing process is only possible through a considerable intervention in the structure of the thread, irregularities in the thread, such as caused by a knot-like binding, are particularly common , to be treated separately The texturing machine according to the invention provides the possibility of texturing, winding and winding up a thread continuously with uniform quality regardless of a thread transition during the withdrawal from the supply spool to a reserve spool

The design of the texturing machine according to the invention is preferably used here, since the design and arrangement of the sensor is possible in a simple manner. Continuous sensing of the thread is not necessary. Only in the case of thread transition is the thread piece located between the two bobbins with the Binding removed The movement of the thread piece is detected and signaled by the sensor

Such sensors are preferably designed as thread monitors, in which the thread piece is held in a rest position and in which

Movement of the thread piece of the thread monitor is guided into a signal position and generates a signal This signaling can be generated in a simple manner with a contact switch.

When using sensors that optically or mechanically sense the thread, the design of the texturing machine according to the invention can be advantageously used

It is proposed, among other things, that the sensor is designed as a thread tension meter, which detects the thread tension from the running thread and which generates a signal when a limit value of the thread tension is exceeded.This is based on the assumption that when the thread passes from the supply spool to the reserve spool, the withdrawal behavior of the The thread changes briefly and thus leads to a thread tension fluctuation.This development of the texturing machine is preferably used in processes in which the actual weave has no significant influence on the further processing of the crimped yarn

For an optical or acoustic perception of the signal by an operator, the sensor is connected to a signal transmitter according to the development according to claim 32. The signal transmitter can be designed as a lamp or siren

In order to be able to carry out the interventions in the process automatically, the texturing machine according to the invention is preferably designed according to claim 33

Here, the control device has means for detecting, evaluating and outputting quality parameters and means for linking the quality parameters to the signals dependent on the thread transition

Texturing machine is therefore suitable for continuous quality monitoring from the supply spool to the winding, in order to provide a high quality thread for further processing

In the following, the methods and devices are described in more detail using some exemplary embodiments of a textile machine

It represent

1 schematically shows an embodiment of a false twist texturing machine with the device according to the invention,

2 schematically shows a cross section of a texturing machine according to the invention,

3 schematically shows a plan view of a gate frame with supply coils,

4 schematically shows an exemplary embodiment of a thread monitor

A false twist texturing machine is shown in FIG. 1. A feed spool 2 is plugged into a feed point 8 designed as a mandrel. A thread 1 is drawn from the feed spool 2 by a first delivery mechanism 11

For this purpose, the thread 1 from the supply spool 2 through the head

Thread guide 10 guided The feed mechanism 11 requests the thread into one

False twist texturing zone The false twist texturing zone has a heating device 12, a cooling device 13 following in the course of the thread and a false twist unit

15 on The thread 1 is from a

False twist texturing zone subtracted and in a second for post-treatment

Heating device 17 guided At the exit of the second heating device 17, a further delivery mechanism is provided, which pulls the thread out of the heating device 17 and leads to a subsequent winding device

The winding device has a winding spindle 21 on which a winding 20 The winding 20 is driven by an adjacent drive roller 22. A traversing device 23 is arranged in front of the reel 20 in the thread run. The traversing device 23 has an oscillating thread guide, which moves the thread back and forth transversely to the direction of travel, so that a package is wound

To the side of the supply spool 2, a second supply spool, which is referred to as a reserve spool 3 for distinction, is placed on a mandrel in a second feed position 9. The feed spool 2 and the reserve spool 3 can be arranged, for example, in a feed gate, in which a plurality of feed spools The thread end 6 of the supply spool 2 is knotted together with the thread start 7 of the reserve spool 3, so that a binding 5 is created in the thread. The partial piece of thread with the binding 5 between the supply spool 2 and the reserve spool 3 is guided in a sensor 4. The sensor 4 has a signal line 26, through which the sensor 4 is connected to a control device 24. The control device 24 has a plurality of outputs 25 in order to control the process of the texturing machine

In the textile machine shown in FIG. 1, the thread 1 is continuously withdrawn from the supply spool 2 and textured in the false twist texturing zone. The thread 1 is given a false twist by the false twist unit 15, which is fixed in the heating device 12 and the cooling device 13. The delivery mechanisms 11 and 16 are operated with a speed difference, so that drawing in the false twist texturing zone takes place at the same time. After a shrinking treatment in the heating device 17, the thread 1 is then wound into the winding 20 in the winding device For this purpose, a coil change is initiated in the winding device in each case after the final diameter of the winding has been reached via the control device 24, while the winding 20 against a new one If empty bobbins are exchanged, the continuously delivered thread 1 passes through a suction device into a waste container until the winding process is continued

The thread 1 is continuously requested by the delivery mechanism 11. Therefore, after the yarn has been drawn off from the supply spool 1, a change is made to the thread of the reserve spool 3. For this purpose, the thread end or supply spool 2 and the beginning of the thread 7 of the reserve spool 3 are knotted together in a binding 5 from the supply spool 2 to the reserve spool 3, the part of the thread is now also drawn off from the delivery mechanism 11. Since the part of the thread is sensed in the sensor 4, the sensor 4 detects the thread transition from the supply spool 2 to the reserve spool 3 be that the thread end 6 and the thread start 7 are guided by the sensor 4, so that the passage of the binding 5 is registered by the sensor 4 and converted into a signal. However, it is also possible to design the sensor such that only the movement of a Thread piece at the thread end 6 or at the beginning of the thread 7 is sensed. The signal generated by the sensor 4 is via di e Signal line 26 of the control device 24 specified in order to initiate a change of the winding via the control device 24 This can advantageously be avoided that the part of the thread with the binding 5 is wound onto a winding. Furthermore, the assignment between the supply spool 2 and the derive completed windings from the yarn of the supply spool 2 For this purpose, for example, labeling on the last winding can be done by labeling, a binding bead or a simple visible marking

However, it is also possible to wind up the part of the thread with the binding 5 onto the winding. The winding containing the binding can then also be labeled so that the winding can be sorted for the finishing, for example in warp and weft material The control device 24 can also advantageously activate a monitoring system in order to pay particular attention to fault events which are caused in the process due to the binding 5. Likewise, the quality parameters, such as thread tension, thread breakage, which have occurred in the period of time, can also be monitored evaluate which yarn of the pre-spool 2 has been processed. This enables the quality of the yarn of the pre-spool to be determined

Furthermore, the equipment of the feed gate can be controlled via the control device 24. For this purpose, a new feed spool is plugged onto the mandrel 8 in order to tie the beginning of the thread of the new feed spool to the end of the reserve spool

The method according to the invention is exemplarily explained in FIG. 1 with the aid of a texturing machine. The method according to the invention can, however, be applied to all known textile machines in which a thread from a supply spool is continuously fed to a treatment or processing process. FIG. 2 shows an embodiment of a texturing machine according to the invention is a half of a machine cross section of a false twist texturing machine shown in Fig. 2 In the following description, the components with the same function were identified by identical reference numerals.

The texturing machine comprises a gate frame 28, a process frame 29 and a winding frame 27 A service aisle 30 is provided between the winding frame 27 and the process frame 29. On the side of the winding frame 27 opposite the service aisle 30, the gate frame 28 is arranged at a distance from the winding frame 27 between the winding frame 27 and the gate frame 28 there is provided an exit 31 for a doffer (not shown). The texturing machine has a large number of processing stations, in each of which a thread 1 is processed. The processing stations are trained parallel to each other. The winding devices 32 occupy a width of three processing stations. Thus, three winding devices 32 1, 32 2 and 32 3 are arranged one above the other in the winding frame 27 in the form of a tier

Each take-up device 32 is assigned two feed points in the frame 28, which are formed by the mandrels 8 and 9. The feed spools 2 and 3 are plugged onto the spikes 8 and 9. The spools 2 1 and 3 1 are the take-up device 32 1, the spools 2 2 and 3 2 are the winding device 32 2 and the bobbins 2 3 and 3 3 are assigned to the winding device 32 3. The thread travel is described below using a processing station. The thread end of the supply spool 2, from which the thread 1 is being drawn off, is 7 at the beginning of the thread the reserve coil 9 connected by a knot-shaped binding 5

In each processing station, the thread 1 is drawn off from the supply spool 2 via a head thread guide 10 and a thread guide 14 1 by a first delivery mechanism 11. A sensor 4 for continuously sensing the thread 1 is arranged in front of the delivery mechanism 11. The sensor 4 is also connected via the signal line 26 connected to the control device 24 viewed in the thread running direction, a first heating device 12, a cooling device 13, a false twist unit 15 and a second delivery unit 16 are arranged behind the first delivery mechanism 11. A thread tension sensor 35 is provided in the thread path between the false twist unit 15 and the second delivery mechanism 16, whereby the thread in the inlet and outlet is guided in each case by a thread guide 36 1 and 36 2. The thread tension meter 35 is connected to a control device 24

A second heating device 17, a thread guide 14 3 and a third supply mechanism 18 are arranged between the winding device 32 and the second supply mechanism 16. The thread 1 is between the supply spool 2 and the Winding device 32 guided by several thread guides 14.1, 14.2 and 14.3. These thread guides are preferably designed as deflection rollers.

The thread is wound into a winding 20 in the winding device 32. The winding 20 is driven by a drive roller 22. A traversing device 23 is arranged in front of the drive roller 22. The traversing device 23 moves the thread 1 back and forth on the winding 20 and in this way winds it up as a cross winding.

The winding device 32 has a winding storage 34, which serves to hold the full winding 20. To remove the full reel 20, the winding spindle is pivoted by means of a bobbin and the full reel is placed on a roll. The unwinding path is part of the winding store 34. The full winding 20 waits on the unwinding path until it is transported away. To simplify the removal, the rolling track is inclined toward the exit 31. Furthermore, each winding device 32 has a tube feed device 33.

Each winding device 32 can be controlled via a winding control 37. The winding controls 37.1, 37.2 and 37.3 are connected to the control device 24.

An input unit 38, which is coupled to the control device 24, is provided on the gate frame 28 for each processing station.

In the situation of the texturing machine shown in FIG. 2, the thread 1 is drawn off from the supply spool 2 in each of the individual processing stations, textured in the false twist zone, relaxed in the second heating device and then wound up into a winding 20. For quality monitoring, the thread tension is continuously measured by the Thread tension sensor 35 The measured values are each given to the control device 24 for evaluation and process control

After the supply spool 2 has been drawn off to the end, a thread transition to the second supply spool 3 takes place. As soon as the binding 5 in the thread 1 passes the sensor 4, a signal is given via the signal line 26 to the control device 24. The control device 24 can now initiate various control measures

One possibility is to act via the take-up control 37 in the respective take-up device 32 of the processing stations concerned in such a way that a take-up change takes place. In this case, the take-up process is interrupted. The thread is cut via an auxiliary device, not shown here, and discharged via a suction device replaced in the take-up device 32 by a new sleeve. During the change of the take-up thread, the thread piece with the binding 5 runs into the suction device to a waste container (not shown here). With new take-up, the first take-up roll is thus produced from the yarn of the supply spool 3 The winding control 37 continuously identifies the windings produced, which are created from the yarn of the supply spool 3. The processing station, continuous numbering and the characteristics of the supply spool can be identified le included The characteristic data or the registration of the supply spool 2 or the supply spool 3 is carried out manually via the input unit 38. When the supply spool is changed, the characteristics of the supply spool are registered by an operator using the input unit 38 and the control device 24 is thus assigned to each processing station Information on which supply spool or which thread is to be placed and processed Another possibility to intervene in the process is that the control device 24 acts on the processing station via the take-up control 37 in such a way that the roll containing the binding is identified separately. Since several rolls are formed from one supply spool, one can thus be formed targeted sorting can be made

Furthermore, the control device can contain means which, when the sensor 4 signals, monitor and evaluate the continuously supplied quality parameters, such as the thread tension, for example. That is, a winding change is initiated only when a predetermined limit value is exceeded to eliminate deviations caused by the binding 5, which is particularly advantageous in the case of long-term thread break monitoring

In the arrangement shown in FIG. 2, the sensor 4 is arranged, for example, in front of the first delivery mechanism 11. The sensor 4, which contains optical or mechanical means for detecting the binding 5, can also be arranged elsewhere in the thread path

The texturing device of the machine according to FIG. 2, which comprises the false twist unit, the heater and the cooling device, is designed as an example. Texturing of the thread can also be carried out by other means, for example intermingling nozzles. The invention also covers such machines

FIG. 3 shows a further exemplary embodiment of a gate frame, as would be usable, for example, in a machine according to FIG. 1 or FIG. 2. The gate frame consists of a rotatable axis 42 on which three T-shaped carriers 41 1, 41 2 are distributed uniformly around the circumference and 41 3 are arranged on the free ends of the TT rager the mandrels 8 and 9 are arranged for receiving a supply spool each. The mandrels 8 and 9 can be advantageous here be pivotally connected to the carrier 41. Each carrier 41 contains a supply spool 2 and a reserve spool 3 for a work station, the adjacent supply spools of the adjacent T-carriers belonging to a processing station.The threads 1 are here from the respective supply spools 2 1, 2 2 and 2 3 drawn off via a head thread guide 10 lying in the axis A thread monitor 39 acting as a sensor is arranged between the supply spool 2 and the reserve spool 3. A thread piece, which is formed from the beginning of the thread of the reserve spool and the thread end of the supply spool, is inserted in the thread monitor 39 The thread monitor 39 is connected to a signal transmitter 40. The signal transmitter 40 is designed here as a lamp. The thread monitor 39 is also coupled to a control device 24

The arrangement shown in FIG. 3 leads to the thread monitor 39 being activated after the supply spool 2 has been removed, as will be described in more detail below. The signal generator 40 is thus activated. The operator can now immediately see at which processing station a thread change is pending or which one Processing station a new supply spool must be replaced in the gate. By connecting to the control device 24, automatically running measures can be implemented immediately in the subsequent process

FIG. 4 shows an exemplary embodiment of a thread monitor as it could be used, for example, in the creel from FIG. 3

4 1 shows a side view and FIG. 4 2 shows a top view of the thread monitor. The following description therefore applies to both figures. The thread monitor consists of a holder 52 and a movable thread guide 43. The holder has a groove 47 Thread guide 43 is pivotably mounted on a swivel axis 44. The thread guide can be between a rest position 49 and a signal position 50 move In the rest position 49 the thread guide 43 designed as a rod is placed in an upright position against a stop 51. In this rest position 49 the thread guide 43 penetrates a guide notch 48 made in the holder 52 on both sides of the groove 47. The thread 1 is guided in the guide notch 48 and simultaneously deflected and fixed by the thread guide 4. By pivoting, the thread guide 43 can move from the rest position 49 into a signal position 50. In the signal position 50 a contact switch 45 is arranged which can be activated by the thread guide 43 being in contact. The contact switch 45 is via a signal line 46 connected to a signal generator, not shown here

In the position of the thread monitor shown in FIGS. 4 1 and 4 2, the thread 1 is clamped in. The piece of thread between the supply spool and the reserve spool is at rest. If the thread transition from the supply spool to the reserve spool occurs, the thread 1 is pulled out of the thread monitor As a result, the thread guide 43 is moved away from the stop 51 and falls into the signal position. This activates the contact switch 45 so that a signal is generated. The thread monitor described is to be seen here as an example. The invention is not limited to individual versions of sensors but basically covers all of them Embodiments familiar to those skilled in the art which make it possible to recognize a knot-like bond in the thread and then to generate a signal

Reference list

thread

Supply spool

Reserve spool

sensor

binding

Thread end

Thread start

Dorn, submission office

Head thread guide

Delivery plant

Heater

Cooler

Thread guide

False twist unit

Delivery plant

Heater

Delivery plant

Thread guide

reel

spindle

Drive roller

Traversing device

Control device

Exits

Signal line

Changing frame

gate

Process rack Service gear

Doffgang

Take-up device

Sleeve feeder

Winding storage

Thread tension sensor

Thread guide

Take-up control

Input unit

Thread monitor

Signal generator

carrier

axis

Thread guide

Swivel axis

Contact switch

Signal line

groove

Leadership notch

Resting position

Signaling

attack

holder

Claims

claims

A method for continuously withdrawing a thread from a supply bobbin, in which the thread is drawn off from the supply bobbin by a conveying means and is fed to a processing and / or processing of the thread and in which the loose thread end of the yarn of the supply bobbin with a loose thread start one Yarns of a reserve spool are knotted together, characterized in that the

Thread transition from the yarn of the supply spool to the yarn of the reserve spool is detected by a sensor and signaled by a signal

A method according to claim 1, characterized in that the thread is passed continuously through the sensor, the sensor detecting and signaling the bond between the thread end of the supply spool and the thread start of the reserve spool

Method according to claim 1, characterized in that a partial piece of the thread consisting of a piece of thread at the end of the thread of the supply spool and a piece of thread at the start of the reserve spool is passed through the sensor, the sensor detecting the bond between the end of the supply spool and the beginning of the reserve spool and signals

Method according to Claim 1, characterized in that a piece of thread of the thread is sensed by the sensor from the end of the thread of the supply spool or from the beginning of the thread of the reserve spool, the sensor detecting and signaling the movement of the piece of thread A method according to claim 4, characterized in that the thread piece is formed by the bond between the thread end of the supply spool and the thread start of the reserve spool

Method according to one of the preceding claims, characterized in that the signal activates an optical or acoustic signal generator in order to trigger a change in the process and / or a change in the supply spool

Method according to one of the preceding claims, characterized in that the signal of a control device of the process is given in order to trigger a change in the process and / or a change in the supply spool

Method according to claim 7, characterized in that the control device interrupts the process for a period of time when a signal is present

Method according to claim 7, characterized in that the control device monitors a time of at least one

Quality parameter causes, and that in the event of impermissible deviations in the quality parameter, a process change or process interruption takes place

Method according to claim 9, characterized in that the quality parameter characterizes the thread produced

Product parameters and / or a process parameter characterizing the process course

Method according to one of claims 7 to 10, characterized in that the control device a change of the supply spool and a

Registration of the new supply spool causes A method according to claim 11, characterized in that the registration of the new supply spool is stored by the control device and is assigned to the subsequent process in the case of a signal indicating the thread transition to the supply spool

Method according to one of claims 1 to 12, characterized in that the thread is placed on the supply spool as a smooth yarn, textured in the subsequent process and wound up as a crimped yarn to form a winding

A method of texturing a multifilament synthetic thread, in which the thread is drawn off from a supply spool as a smooth thread, textured and wound as a crimped thread into a winding, the thread being continuously drawn off by the method according to one of Claims 1 to 12

Method according to claim 13 or 14, characterized in that the windings are produced in a winding device which has a feed point with the feed spool and a feed point with the

Reserve spool is assigned, and that the registration of the supply spool and the reserve spool is linked and stored with the respective reference point

Method according to one of Claims 13 to 15, characterized in that when the thread transition from the supply spool to the reserve spool is signaled, the winding produced during the thread transition receives an identification

Method according to one of claims 13 to 15, characterized in that the supply spool contains a thread length which is used to wind up several windings is sufficient, the windings being identified in relation to the supply spool

Method according to claim 17, characterized in that when the thread transition is signaled from the supply spool to one

Reserve spool the label for the following reels is changed

Method according to claim 17 or 18, characterized in that the winding produced during the thread transition from the supply spool to the reserve spool receives an additional identification

Method according to one of claims 17 to 19, characterized in that the identification is carried out by means of a numbering related to the supply spool

Device for the continuous removal of a thread (1), with at least two feed points (8, 9) and a conveying means (11), one of the feed points (8) a feed spool (2) and the other feed point (9) a reserve spool (3) bears, the thread (1) being drawn off by the conveying means (11) from the supply spool (2) and from the reserve spool (3) and wherein the thread end (6) of the yarn of the supply spool (2) with the thread start (7) of the Yarns of the reserve spool (3) are knotted together by a binding (5), characterized in that a sensor (4) is provided which detects and signals the thread transition from the yarn of the supply spool (2) to the yarn of the reserve spool (3)

Device according to claim 21, characterized in that the sensor (4) is arranged in the thread run in front of the conveying means (11) and behind the feed points (8,9), so that the running thread (1) can be continuously sensed

23. The apparatus according to claim 21, characterized in that the sensor (4) between the two presentation points (8, 9) is arranged so that the thread piece from the thread end (6) of the supply spool (2) and the thread start (7) of the Reserve spool (3) is sensible.

24. Device according to one of claims 21 to 23, characterized in that the sensor (4) is connected to a signal generator (40).

25. Device according to one of claims 21 to 24, characterized in that the sensor (4) is connected to a control device (24) which controls a thread (1) working or processing process.

26. Texturing machine for texturing and winding up a thread (1), with at least two feed points (8, 9) for receiving two feed spools (2, 3), with a plurality of delivery mechanisms (11, 16, 18) arranged one behind the other in the thread path, with one Texturing device (12, 13, 15) and with a winding device (32), the thread (1) being alternately drawn off from the feed points (8, 9) by a first delivery mechanism (11) and with a thread end (6) of one of the feed spools (2) with a thread start (8) of the other supply spool (3) (reserve spool) is knotted, characterized in that a sensor (4) is provided which detects the thread transition from the supply spool (2) to the reserve spool (3) and signals.

27. Texturing machine according to claim 26, characterized in that the sensor (4) is arranged between the two feed points (8, 9), so that the thread piece from the thread end (6) of the feed spool and the thread start (7) of the reserve spool (3rd ) is sensible.

28. Texturing machine according to claim 27, characterized in that the sensor (4) is designed as a thread monitor (39) which in one In the rest position (49) a piece of thread stops and which moves into a signal position (50) by movement of the thread piece and generates a signal in the signal position (50)

Texturing machine according to claim 28, characterized in that the thread monitor (39) has a movable thread guide (43) and a contact switch (45), the contact switch (45) for generating a signal by the movement of the thread guide (43) from the rest position ( 49) is actuated in the signal position (50)

Texturing machine according to claim 26, characterized in that the sensor (4) is arranged in the thread run behind the feed points (8, 9) and in front of or behind the first delivery mechanism (11), so that the running thread (1) can be continuously sensed

Texturing machine according to claim 30, characterized in that the sensor (4) is designed as a thread tension meter (35) which detects the thread tension from the running thread (1) and which generates a signal when a limit value of the thread tension is exceeded

Texturing machine according to one of claims 26 to 31, characterized in that the sensor (4) is connected to a signal transmitter (40)

Texturing machine according to one of claims 26 to 32, characterized in that the sensor (4) is connected to a control device (24) which controls the devices of the texturing machine

Texturing machine according to claim 33, characterized in that the control device means for detecting, evaluating and outputting Has quality parameters and means for linking the quality parameters with the signals dependent on the thread transition.