JP2019031399A - Device for clearing removal of yarn defects from yarn - Google Patents

Abstract

To provide a clear cutting device for clearing removal of yarn defects from yarn, having a measuring head that measures determinable yarn parameters, and configured to report presence of yarn defects and yarn defect type when deviating from a value range corresponding to the yarn parameter, and based on a yarn defect signal, take up the yarn defects in a winding package of a textile machine for manufacturing a winding package.SOLUTION: A memory unit 8 is arranged correspondingly to a device 18. For various kinds of yarn defect types, one yarn searching program for a suction nozzle 14 designed for searching for a yarn end of an upper yarn in a textile machine is stored in the memory unit 8 in a callable manner, and the device 18 is adapted to start the corresponding yarn searching program for catching a yarn end portion of the upper yarn wound on the winding package 3, using the suction nozzle 14, in connection with the reported yarn defect type.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for clearing and removing yarn defects categorized into a variety of yarn defect types from a yarn, a textile machine for manufacturing a winding package equipped with such a device, and a yarn defect type. The invention relates to a memory unit for storing callable at least one yarn search program and a method for capturing a yarn end wound on a winding package.

  In the textile industry, textile machines for producing various types of winding packages have been widespread for some time. In addition to the open-end rotor spinning machine, for example, a large number of winders are used.

  In the working unit of the winder, a spinning cup produced in a ring spinning machine and containing relatively little yarn material is rewound into a large volume winding package. The yarn is monitored for yarn defects during the rewinding process, at which time the yarn defects are cut off and replaced by a splicing section that is approximately equal to the original yarn.

  Therefore, in the winding unit of the winder, the upper thread that is called back from the winding package and the lower thread that comes from the feeding bobbin are always required.

  Usually, in the case of controlled clearing cutting, an automatic splicing device specific to the working unit is activated via the winding unit computer of the corresponding winding unit.

  That is, first, suction air is supplied to the suction nozzle on the surface of the winding package that rotates slowly in the direction opposite to the winding direction. After catching the upper thread end, the suction nozzle pivots to a thread insertion position where the suction nozzle opening is positioned below the splicing device. Next, the gripper pipe positioned at the lower starting position turns to the upper working position and entrains the lower thread pulled out from the feeding bobbin at this time.

  A number of work units each have one work unit computer, and each work unit computer is itself connected to the central control unit of the textile machine.

  Usually, in the central control unit of the textile machine, the response sensitivity of the yarn clearer can be adjusted, i.e. whether the irregularities are graded as yarn defects can be set in the middle. Yarn defects mean frequent and rare thread defects. Frequently occurring thread defects are also called imperfections. Also includes Nep / small aneurysm. If irregularities are recognized and graded as yarn defects, the yarn clearer triggers a clearing cut because the set tolerance limit has been exceeded.

  In DE 196 40 184 A1 (DE 19640184A1), for example, a yarn is drawn out from a feeding bobbin which is, for example, a spinning cup, and is wound into a winding package, for example a winding package. Is disclosed. The traveling yarn is guided through the measuring head of the yarn clearer and the cutting device. The yarn clearer detects a measurement that reproduces the quality of the yarn. If the thread clearer detects an unacceptable defect, i.e. the measured value deviates from the set value, the thread clearer triggers a so-called clearing cut, i.e. the cutting device is activated. As a result, the portion including the defect of the yarn can be removed. After the yarn has been cut, the yarn end having the portion containing the defect is wound up into a winding package. The yarn end is captured by a swivelable suction nozzle, and the yarn portion including the defect is sucked. The upper yarn coming from the winding package is inserted into the splicing device, and the yarn portion including the error is cut. Correspondingly, the lower thread coming from the feeding bobbin is inserted into the yarn splicer using a pivotable gripper tube and a spliced part is formed.

  A method and apparatus for grading and clearing yarns is known from European Patent Application No. 0531894 (EP 0531894A1), whereby the yarn defect is reduced to a target value for yarn thickness. Is displayed two-dimensionally over a settable yarn length based on the deviation from. Yarn defects are detected with respect to the diameter and its length using a measuring device, then evaluated and graded in the grading field of the defect matrix. For this purpose, in the grading field, the frequency of occurrence of yarn defects that meet the respective grading criteria is detected by means of a number and shown two-dimensionally. Using the display on the display, the occurrence of the defect frequency can be read by the number indicated in the respective grading field.

German Patent Application No. 19640184 European Patent Application No. 0531894

  However, what is common in the known methods and devices is that there is one thread search program for the suction nozzle that captures the upper thread, even though a wide variety of thread defect types are recognized and detected. And to be implemented. Certainly, in the context of upper thread capture, optimizing the spacing of the suction nozzle relative to the winding package, continuously adapting throughout the winding process, and if upper thread capture is unsuccessful, It is also known to increase the negative pressure that acts to capture the upper thread, however, the thread search program is implemented uniformly for all detected thread defects.

  Therefore, a first aspect of the invention relates to an apparatus for clearing and removing yarn defects categorized into a wide variety of thread defect types from a thread, wherein the apparatus measures at least one predeterminable thread parameter. Manufacture a winding package that has a head and reports the presence of a yarn defect and a yarn defect type upon deviation from the value range corresponding to the yarn parameter and based on the yarn defect signal It is adapted to cause a clearing cut to wind up yarn defects in the winding package of a textile machine.

  The proposed device has a memory unit correspondingly arranged in this device, and is designed for searching the yarn end of the upper thread of a textile machine for a variety of yarn defect types in the memory unit. A thread search program for each of the drawn suction nozzles is stored in a callable manner, and the device uses the suction nozzle to wind up the upper thread in relation to the reported thread defect type. It stands out by being adapted to start a matched yarn search program to capture the yarn end wound on the package.

  When configured in this way, one individually matched yarn search program can be implemented for one yarn defect type. Experiments have confirmed that a variety of yarn search parameters improve upper yarn capture for a variety of yarn defect types. Basically, the yarn defect type is divided into a thick part, a thin part and a nep, and at this time, it is also possible to divide individual thread defect types into further under categories.

  At this time, the yarn search parameters include, for example, the level of negative pressure for capturing the yarn end portion of the upper yarn coming from the winding package, the interval of the suction nozzle with respect to the circumferential surface of the winding package, and the suction nozzle It includes whether or not to perform a tilting motion when capturing the upper thread, and in what time interval to perform such a tilting motion. Similarly, a negative pressure can be continuously supplied to the suction nozzle, or a negative pressure can be supplied by pulsating. Basically, the thread search parameters include all parameters that are important for supplementing the upper thread.

  For example, in the case of a narrow part, it has been found that it is preferable that the suction nozzle is positioned relatively close to the peripheral surface of the winding package at a relatively high negative pressure. On the other hand, the thick part can be reliably captured by a suction nozzle that is already arranged with a relatively low negative pressure and a relatively large interval. Can be captured by the further reduced negative pressure promoted by

  Since the yarn search program is stored in the memory unit and accessible, the yarn search program corresponding to each yarn defect type can be executed according to the detected yarn defect type. That is, when a thick spot is recognized by the apparatus, for example, so-called clearing cut is triggered to clear this yarn defect from the yarn, and this yarn defect type is reported. In the memory unit arranged corresponding to the apparatus, an individual yarn search program is stored even for the yarn defect type of a thick part, so that this yarn search program uses the suction nozzle, Selected and implemented to capture the yarn end wound on the winding package. This thread search program optimized for thick spots is now different from the remaining thread search programs stored for other thread defect types in at least one parameter.

  With individually tailored thread search programs for a variety of thread defect types, the thread search capture rate is improved, thereby allowing the upper thread as a whole to be captured relatively quickly. This allows the winding process to be continued relatively quickly after the clearing cut and increases the effectiveness of the textile machine. The optimally adjusted negative pressure, which only supplies the suction nozzle with the negative pressure necessary to catch the yarn end that is occurring, ultimately has a positive effect on the energy consumption of the textile machine. .

  In a preferred configuration of the present invention, the yarn search program is automatic if the yarn search capture rate for each yarn defect type is detectable and memorable and the capture rate deviates from the limit value. Can be adapted.

  How often the yarn end of the upper yarn could not be captured by the suction nozzle is recognized and stored for each yarn defect type, and defines the number of acceptable failed yarn containment attempts. If a limit value is set in the memory unit, at least one yarn search parameter is changed when the limit value is exceeded. For example, the positioning of the suction nozzle with respect to the winding package can be made closer or further spaced, or the negative pressure in the suction nozzle is reduced or increased. Instead of a persistently negative pressure, it is possible to supply the suction nozzle with a pulsating negative pressure or to carry out a tilting movement. Within the framework of the present invention, individual or multiple yarn search parameters can be varied in combination with each other.

  Preferably, automatic adaptation of the yarn search program is performed for individually corresponding work units, for manufacturing groups or for the entire textile machine.

  The automatic adaptation of the thread search program, in which at least one thread search parameter is varied based on deviations from the limit value for the upper thread catch rate, such that this is done for a specific work unit, for example. You can choose. This may be suitable, for example, when the model package is wound up in one of the working units of the textile machine. Similarly, however, if multiple lots are produced simultaneously in a textile machine, or if all work units are not used, automatic matching is limited to one production group or one lot. It may also be preferred. Similarly, it is conceivable that an automatic adaptation of the yarn search program is carried out for the entire textile machine.

  Preferably, the memory unit is formed by a work unit control device, a central control unit, or an external memory unit.

  Within the framework of the present invention, a variety of thread search programs are stored inside and the memory unit stored so as to be callable is a work unit control device or a central control device that exists anyway. It can be a component. This is preferred because any existing devices and structures can be used without having to incorporate expensive new components. However, the memory unit can also be an external medium that can be connected to a textile machine or device, such as a USB stick or a computer, tablet, smartphone, smart watch, or the like. . Such an external medium can be, for example, a medium that can be connected to the device or textile machine via a suitable interface or can be operatively connected to the apparatus or textile machine without cables.

  A second aspect of the present invention relates to a textile machine for making a winding package that includes an apparatus for clearing and removing yarn defects categorized into a wide variety of yarn defect types from the yarn.

  A textile machine that manufactures a winding package is distinguished by the fact that at least one device is configured as in one of the embodiments described above.

  With such a textile machine, the winding process that is interrupted on the basis of the detected yarn defects and thus the associated clearing cuts can be continued again more quickly and more effectively. Upper thread capture is improved by a thread search program that is individually adapted to a wide variety of thread defect types. Overall, the efficiency of the textile machine can be increased by requiring only a few trials to successfully accommodate the yarn ends from the winding package. Overall, only a small number of trials capture the upper thread, and the negative pressure level tailored to the respective thread defect type further reduces the negative pressure consumption, and ultimately the total energy demand of the textile machine. Is optimized.

  According to a third aspect of the present invention, the yarn end of the upper yarn of the working unit of the textile machine that manufactures the winding package is wound around the winding package so as to correspond to the winding package of the textile machine. A method of capturing using a suction nozzle, the method then comprising a first step of controlled clearing cut based on notification of the yarn defect and the yarn defect type to which it belongs.

  In this method, in the second step, a yarn search program corresponding to the notified yarn defect type is called from the memory unit, and in the third step, the upper yarn wound using the suction nozzle is wound. It stands out by performing end capture according to a called thread end search program.

  For a wide variety of thread defect types, such as thick, thin or nep, if a separate thread search program exists in the memory unit and the thread defect type is reported upon recognition of the thread defect, then The upper yarn capture from the winding package that takes place is carried out according to a yarn search program with corresponding yarn search parameters that are specifically tailored to this yarn defect type. In this case, such a thread search parameter can be, for example, the spacing of the suction nozzle with respect to the winding package, or the suction nozzle can be statically positioned in front of the winding package, or dynamically with, for example, tilting motion Including positioning. Similarly, the height of the negative pressure supplied to the suction nozzle to capture the yarn end, or whether a continuous negative pressure supply or a pulsating negative pressure supply is performed, Included in the search program thread search parameters.

  The method according to the invention ensures that the upper thread can always be reliably and quickly captured by the suction nozzle after clearing cut, so that the interrupted winding process can be continued as quickly as possible. To do.

  In the preferred configuration, the yarn search program is automatically determined when the catch rate of the upper end of the yarn for each yarn defect type is obtained and stored, and the catch rate deviates from the limit value. Adapt.

  This development of the invention can further optimize the upper thread search. This is because, for each yarn defect type, how often the upper yarn could not be successfully received by the suction nozzle was individually detected and stored, and the limit for that was previously determined. This is because once the value is confirmed, the corresponding yarn search program is automatically post-adjusted if this limit value is exceeded. That is, for example, when a thick part is detected, the drive is controlled corresponding to the yarn search program to which the suction nozzle belongs, and this is recognized and stored when the upper thread is not captured by the suction nozzle. Is done. For example, if a yarn search failure for one thick spot is recorded 10 times and a limit value of 10 is defined in advance, after 10 attempts to contain the yarn, The thread search program is adapted by changing at least one thread search parameter. This may be, for example, the height of the negative pressure acting or the distance of the suction nozzle relative to the winding package. At this time, in the present invention, such a capture rate is preferably determined, for example, for each clearing cut, for each yarn defect type, or in relation to a lot.

  In particular, automatic adaptation of the yarn search program is performed for individually corresponding work units, for production groups or for the entire textile machine.

  The automatic adaptation described above the yarn search program is performed as needed, on a work unit basis, for example for a manufacturing group such as a lot, or for the entire textile machine. Can be selected and done.

  Preferably, the storage is performed in a work unit controller, a central control unit or an external memory unit.

  Depending on the production structure, the yarn search program can be stored in a wide variety of places. This may be, for example, a work unit control device provided in each individual work unit, or a central control device itself connected to the individual work unit. However, an external memory unit is also conceivable which can be connected to the device itself or to the textile machine physically or without cables.

  According to a fourth aspect of the present invention, there is provided a yarn defect for capturing a yarn end portion of an upper yarn wound around a winding package of a textile machine for manufacturing a winding package using a suction nozzle of the textile machine. The present invention relates to a memory unit that stores at least one yarn search program corresponding to a type in a callable manner.

  This memory unit is distinguished by the fact that it is provided with a thread search program for carrying out the method according to one of the embodiments described above.

  The memory unit may be formed as a component part of an existing component such as a work unit controller or a central control unit. However, the memory unit may also be formed externally, for example as a USB stick, as a computer or the like, such a memory unit being connected to the device or textile machine via an interface or without a cable. Can be connected to. Important for the present invention is that the memory unit is configured so that at least one yarn search program for a particular yarn defect type is stored and can be recalled.

  Other features and advantages of the present invention will become apparent from the following description of preferred embodiments of the invention, from the drawings and drawings showing details important to the invention, and from the claims. Individual features may be implemented individually in one preferred embodiment of the present invention, or may be implemented in any combination.

  Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is a side view which shows the winding unit of a winding machine. 3 is a flowchart illustrating a method.

  FIG. 1 schematically shows a working unit 1 of an automatic winder in a side view. Such a winder usually has a plurality of work units 1 of the same type, also called a winder unit, between both end frames (not shown).

  In these winding units, as is known, and therefore not described in detail, the spinning cup 2 manufactured in the ring spinning machine is rewound into a large volume traverse package. At this time, the spinning cup 2 is a feeding bobbin from which the yarn 4 is fed. The twill winding package forms a winding package 3 around which the yarn is wound.

  After being manufactured, the traverse package is delivered to the traverse package transport device 5 extending over the machine length using an automatically actuated service unit, preferably a traverse package changer (not shown), and , Transported to a package charge station located on the machine end side or similar.

  Such a winder further comprises a logistic device formed as a bobbin / winding tube conveying system 6. In this bobbin / winding tube transfer system 6, the spinning cup 2 or the empty tube circulates on the transfer tray 7.

  In addition, such automatic winders usually have a central control unit (not shown), which is connected to the individual winding unit computers of the individual winding units via the machine bus and It is connected to the control unit of the service unit. In this embodiment, the memory unit 8 is formed by a winding unit computer.

  Of the bobbin / winding tube transfer system 6 described above, FIG. 1 simply shows a cup supply section 9, a reversible drivable storage section 10, a lateral transfer section 11 leading to the winding unit, and a winding pipe return section 12. Only shown.

  The supplied spinning cup 2 is rewound into a large volume traversing package at a feeding point 13 located in the region of the lateral conveyance section 11 in the winding unit. At this time, the individual take-up units are simply shown for reasons known in the art, but have a variety of devices that guarantee the work as prescribed by these work units. These devices are, for example, a suction nozzle 14, a gripper tube 15 and a yarn splicing device 16.

  At this time, the yarn splicing device 16 is preferably formed as an aerodynamic splicer. The pneumatic splicer is somewhat retracted with respect to the normal yarn path and has an upper clamping and cutting device and a lower clamping and cutting device.

  Such a winding unit further comprises a thread tensioner 17, in this embodiment a device 18 according to the invention which is formed as a yarn clearer and other devices not shown in detail, for example paraffin processing devices, yarn cutting devices. And devices such as a thread tension sensor and a lower thread sensor.

  The winding device generally indicated by reference numeral 19 comprises a package frame 20, which is supported movably around a pivot shaft 21 and rotates a traverse package winding tube. It has a holding device.

  During the winding process, the traverse package is in contact with the grooved drum 22 on its surface and is driven by friction by this grooved drum 22.

  As already mentioned above, each winding unit has a suction nozzle 14 and a gripper tube 15, which extend over the machine length via a suction air connection, respectively. Connected to the suction passage 23.

  The suction nozzle 14 is supported so as to be rotatable about a shaft 24. The swivel movement of the suction nozzle 14 is performed by a swivel drive device 25 arranged in the winding unit housing 26. The drive control of the turning drive device 25 is performed by a winding unit computer. The suction nozzle 14 has a controllable connection (not shown) leading to the suction passage 23 in the region of the shaft 24. The suction nozzle 14 has a suction slit 27 for sucking or catching the yarn end portion wound or wound on the winding package. The suction nozzle 14 can position the suction slit 27 in the traverse package region using the turning drive device 25. At this time, the suction slit 27 extends substantially in parallel to the peripheral surface of the winding package. Deviations from parallelism are caused by the package shape, for example in a conical package.

  The gripper pipe 15 is supported so as to be pivotable about a rotation shaft 28, and further has a gripper pipe flap 29 at its free end that can close the gripper pipe opening.

  FIG. 1 shows the state of the winding unit in a normal winding process. The suction slit 27 of the suction nozzle 14 is positioned in the area of the traverse package and faces the direction of the traverse package. During the winding process, the diameter of the twill package increases. As a result, the distance between the suction slit 27 and the peripheral surface of the traverse package changes. To compensate for this spacing change, the suction nozzle 14 is moved about the axis 24 relative to the diameter of the trawl package. In this way, the interval between the suction slit 27 and the peripheral surface of the traverse package can be maintained within a set range.

  The gripper tube 15 is positioned at the lower position during the normal winding process. That is, the gripper tube opening is positioned below the yarn splicing device 16 and is positioned in front of the runway of the yarn 4 as viewed from the operator's line of sight.

  In this embodiment, the work sequence at the time of clearing cutting is controlled by a winding unit computer. However, it is also possible for the control to be initiated by another control device of the textile machine, for example a central control unit, or by an externally connected control unit.

  After the yarn defect is detected, clearing cutting is started. The lower thread 30 is normally held by the thread tensioner 17, while the upper thread is wound around the surface of the traverse package. In the present embodiment, the yarn defect type which is a narrow portion is also reported in the same manner.

  As soon as the yarn interruption of the winding unit is recognized, suction air is supplied to the suction nozzle 14 and the level of negative pressure is set by the selected yarn search program. At the same time, the braking operation of the traverse package is introduced, and the traversed package that has been braked is slowly rotated in the direction opposite to the winding direction. Depending on the yarn search program, the suction slit 27 of the suction nozzle 14 is positioned at a different proximity on the circumferential surface of the traverse package. The yarn search program determines whether the suction nozzle 14 stays in this position continuously during yarn end capture, or whether the suction nozzle 14 performs a tilting motion, for example during yarn end capture, Set in the same way.

  If the upper thread could not be captured by the suction nozzle 14 or could not be captured as specified, this is detected and stored separately for each thread defect type. In the winding unit computer, a limit value is determined, and in this embodiment, this limit value is 10 failed attempts of yarn detection for a narrow part. When the eleventh failure attempt to catch the upper thread is recognized, the thread search program stored in the winding unit computer is automatically adapted. That is, the distance between the suction nozzle 14 and the traverse package is reduced. This modified spacing of the suction nozzle 14 relative to the traverse package is activated during the next yarn storage after recognition of the narrow spot.

  After the suction nozzle 14 has received the upper thread, the suction nozzle 14 swivels along the broken line 31 from its starting position shown in FIG.

  While the upper thread has already been captured and conveyed in the direction of the splicing device, the lower thread 30 is called using the gripper tube 15. For this purpose, the gripper tube opening of the gripper tube 15 is swiveled to a region immediately below the thread tensioner 17 and captures the lower thread 30 there pneumatically. At this time, the control protrusion disposed on the gripper tube flap 29 slides on the lower control slider guide (not shown), and thereby the gripper tube flap 29 is opened. As soon as the gripper tube 15 catches the lower thread 30, the gripper tube 15 can be swung upwards to some extent, whereby the gripper tube flap 29 is closed and the lower thread 30 is fixed mechanically. The gripper tube 15 is swung upward along the broken line 32 to the front of the splicing device.

  As soon as the gripper tube 15 is positioned in front of the splicing device together with the lower thread 30 accommodated, the suction nozzle 14 is turned together with the accommodated upper thread to a position in front of the gripper tube 15 in the area of the splicing device. Can do.

  Next, the suction nozzle 14 and the gripper pipe 15 are further swung to their respective end positions 33 and 34, and the upper thread and the lower thread are inserted into the splicing device. At this time, the upper thread is similarly inserted into an open clamp and cutting device disposed under the yarn clearer, the cutting device, and the splicing device. In addition to being inserted into the splicing device, the lower thread 30 is inserted into an open clamp and cutting device disposed on the splicing device.

  Now, the upper thread and the lower thread are inserted into the splicing device, and the original splicing can be performed. As soon as the piecing is carried out, the gripper tube 15 again turns to the lower position where the gripper tube opening is located in front of the yarn runway.

  The suction nozzle 14 turns back to its starting position and at this time gradually releases the yarn loop with the start of the package drive so that the yarn loop is still wound at a relatively low speed. The suction slit 27 is then positioned again in the region of the traverse package. In the same way, the gripper tube 15 is controlled to turn back again.

  The method 100 illustrated by the flowchart shown in FIG. 2 relates to the capture of the yarn end wound on the winding package 3 of the upper yarn using the suction nozzle 14. In the first step 110, a yarn defect is recognized, after which a so-called controlled clearing cut is started. The yarn defect type is also detected and reported as well.

  Next, in the second step 120, the yarn search program corresponding to the notified yarn defect type is called from the memory unit 8, and finally, in the third step 130, the winding using the suction nozzle 14 is performed. The captured yarn end is captured by the yarn search parameters stored in the called yarn end search program.

DESCRIPTION OF SYMBOLS 1 Work unit 2 Spinning cup 3 Winding package 4 Yarn 5 Twill winding package transport device 6 Bobbin / winding tube transport system 7 Transport tray 8 Memory unit 9 Cup supply section 10 Storage section 11 Lateral transport section 12 Winding tube return section 13 Feeding Location 14 Suction nozzle 15 Gripper tube 16 Yarn splicing device 17 Yarn tensioner 18 Device 19 Winding device 20 Package frame 21 Rotating shaft 22 Grooved drum 23 Suction passage 24 Shaft 25 Rotating drive device 26 Winding unit housing 27 Suction slit 28 Rotating shaft 29 Gripper pipe flap 30 Lower thread 31 Line 32 Line 33 End position 34 End position 100 Method 110 First step 120 Second step 130 Third step

Claims (10)

A device (18) for clearing and removing yarn defects categorized into various yarn defect types from the yarn (4), wherein the device (18) measures at least one predeterminable yarn parameter. A winding package having a head and reporting the presence of a yarn defect and a yarn defect type upon deviation from a value range corresponding to the yarn parameter, and based on the yarn defect signal; In an apparatus (18) adapted to cause a clearing cut to wind up said yarn defect in a winding package (3) of a textile machine to be manufactured;
A memory unit (8) is correspondingly arranged in the device (18), and in the memory unit (8), for the various yarn defect types, the thread end search of the upper thread of the textile machine. A thread search program for each suction nozzle (14) designed for use is stored in a callable manner, and
The device (18) relates the thread end of the upper thread wound on the winding package (3) using the suction nozzle (14) in relation to the reported yarn defect type. Device (18), characterized in that it is adapted to start said matched thread search program for capturing. The yarn search program is automatically adaptable if the yarn search capture rate for each yarn defect type is detectable and memorable and the capture rate deviates from the limit value.
Device (18) according to claim 1. Automatic adaptation of the yarn search program is performed for individually corresponding work units (1), for production groups or for the entire textile machine,
Device (18) according to claim 1. The memory unit (8) is formed by a work unit control device, a central control unit, or an external memory unit,
Device (18) according to claim 1. A textile machine for producing a winding package comprising a device (18) for clearing and removing a yarn defect categorized into a variety of yarn defect types from a yarn (4),
A textile machine, characterized in that the device (18) is configured as claimed in any one of claims 1 to 4. The upper end of the upper thread of the working unit (1) of the textile machine that manufactures the winding package is arranged corresponding to the winding package (3) of the textile machine. A method (100) for capturing using a suction nozzle (14), wherein the method (100) is a first step of controlled clearing cutting based on notification of yarn defects and the yarn defect type to which they belong ( 110), in method (100)
In a second step (120), a yarn search program corresponding to the notified yarn defect type is called from the memory unit (8), and
In the third step (130), the yarn end wound around the upper yarn using the suction nozzle (14) is captured according to a called yarn end search program. (100). Claiming and storing the yarn end capture rate of the upper thread for each yarn defect type, and automatically adapting the yarn search program when the capture rate deviates from the limit value Item 6. The method (100) according to Item 6. Automatic adaptation of the yarn search program is performed for individually corresponding work units (1), for manufacturing groups or for the entire textile machine,
The method (100) of claim 7. The storage is performed in a work unit controller, a central control unit, or an external memory unit.
The method (100) of claim 7. A yarn defect type for capturing the yarn end of the upper yarn wound on the winding package (3) of the textile machine for manufacturing the winding package using the suction nozzle (14) of the textile machine. A memory unit (8) for storing callable at least one associated yarn search program,
Memory unit (8), characterized in that it has a yarn search program for carrying out the method (100) according to any one of claims 6 to 9.

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