EP1708947A1 - Vorrichtung zum erkennen eines fadens - Google Patents
Vorrichtung zum erkennen eines fadensInfo
- Publication number
- EP1708947A1 EP1708947A1 EP04804371A EP04804371A EP1708947A1 EP 1708947 A1 EP1708947 A1 EP 1708947A1 EP 04804371 A EP04804371 A EP 04804371A EP 04804371 A EP04804371 A EP 04804371A EP 1708947 A1 EP1708947 A1 EP 1708947A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- measuring field
- suction pipe
- recess
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
- B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
- B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
- B65H63/036—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the combination of the detecting or sensing elements with other devices, e.g. stopping devices for material advancing or winding mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/08—Automatic end-finding and material-interconnecting arrangements
- B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
- B65H67/085—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement end-finding at the take-up package, e.g. by suction and reverse package rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the invention relates to a device for recognizing a thread in the detection of thread ends in an air-flowed intake manifold with a sensor device comprising a transmitter and a receiver for detecting a thread with the features of the preamble of claim 1.
- Such suction tubes are equipped, for example, with devices for recognizing a thread in order to detect the detection of the winding spool end or the winding spool end that is to be fed to a thread connecting device at a winding point.
- Suction tubes are also equipped with such a device, which are used on bobbin preparation devices in order to determine whether the thread which is then to be placed at a suitable location for later detection in the winding position could be detected. Depending on this test result, further steps are then initiated, depending on the type of preparation device.
- a device for recognizing a thread in an air-flow channel is known.
- the channel is part of a suction device for detecting the thread on the winding package at a winding point.
- On a pipe elbow mutually opposite, mutually aligned openings for receiving a sensor arrangement formed from a radiation source and a receiver are present in the pipe wall.
- This sensor arrangement forms a light barrier crossing the channel, the interruption of which by the Thread is detectable.
- the facing optics in the form of lenses become dirty depending on the load on the thread with impurities after a certain period of use, as a result of which the reliability of the measurement deteriorates. This pollution is even stronger on one pipe elbow than on the other duct parts due to the air flow.
- the generic DE 43 08 058 AI also describes a device in particular for use on bobbin preparation devices or feeders to a thread connecting device, the channel cross section being monitored with the aid of a sensor device.
- the transmitter and the receiver of the sensor arrangement are arranged outside aligned openings of a channel. There is an air gap between the exit of the openings and the radiation source or the receiver.
- the external sensor system prevents contact with the thread or with the suction air flow surrounding it in the duct. Dirt carried along by the thread, in particular finishing, no longer reaches the sensors, but the breakthroughs through the wall of the suction channel and the associated edges can lead to disturbances in the air flow in the suction channel and the formation of dirt accumulations, for example the formation of fluff piles, entail.
- the distance between the transmitter and receiver is at least as large as the channel diameter. This makes it more complex Sensor device required if you do not want to compromise on thread detection.
- the thread is guided in such a way that it moves at a distance from the wall of the suction tube in the measuring field and can be positioned well in the measuring field.
- the thread can be recognized particularly easily and reliably due to its "fluttering movement" transverse to its direction of travel.
- the transmitter and receiver are arranged in such a way that the recess runs between them. This makes it possible to achieve a distance between the transmitter and receiver that is significantly smaller than the diameter This enables the transmitter and receiver to be used in a simple, inexpensive design, with reliable thread detection being ensured.
- the measuring field lies essentially outside the curvature of the suction tube, a distance between the thread and the base of the suction tube can be easily achieved within the measuring field located in the region of the depression. Even if it is possible within the scope of the invention that the measuring field between the transmitter and receiver runs through mutually aligned bores which break through the wall of the suction pipe, it is advantageous to so the suction pipe in the area of the sensor device to train that there are no disturbances due to openings in the wall of the suction pipe, on which deposits can also form.
- the suction pipe is transparent. A cost-effective design of a transparent suction pipe is made possible by the use of polypropylene as a transparent material.
- the recess is narrow, not only can a small distance be set between the transmitter and receiver, but the wall of the suction pipe is cleaned by the movement of the thread and thus counteracts the deposition of dirt.
- FIG. 1 is a simplified illustration of a winding unit with a suction nozzle positioned in front of the package
- FIG. 2 shows a section through an intake pipe through which air flows, in the area of an intake pipe bend with sensor device and recess,
- FIG. 3 shows a cross section AA through the intake manifold of FIG. 2.
- FIG. 1 shows a winding station of a textile machine producing cross-wound bobbins.
- FIG. 1 shows a situation at the winding unit 1 in which the thread run has been interrupted after a thread cut due to a thread defect and measures for removing the thread defect, a so-called cleaning, have been initiated.
- the thread path during the operation of the winding unit 1 is indicated by the dashed line 2.
- the thread is drawn off from a thread source, not shown.
- the thread source can be a pay-off spool or a spinning device.
- the thread is wound on a package 3 serving as a package.
- the defective piece of thread which has run onto the cheese 3, must be completely unwound from it so that when the thread is cut, the thread defect is in the cut thread part.
- the cheese 3 has already been lowered back onto the winding roller 4 in the illustration in FIG. 1.
- the cross-wound bobbin 3 is held by a bobbin holder 5 which is mounted in a rotary joint 6 in the machine frame 7, which is only indicated here.
- the actuation of the drive of the coil holder 5, not shown here, is controlled by the control device 8 via the line 9.
- the winding roller 4 is driven by a drive, not shown here, which is also connected to the control device 8 via the line 10.
- the winding roller 4 In order to unwind the defective thread piece, the winding roller 4 is driven counter to the winding direction, corresponding to the arrow 11, and drives the cross-wound bobbin 3 with its peripheral surface 12 in the unwinding direction 13.
- a suction nozzle 14 with its mouth 15 has been positioned in front of the peripheral surface 12 of the cheese 3.
- the suction nozzle 14 is mounted in the swivel joint 16 in the machine frame 7, the connection to the central suction duct 18 of the vacuum supply of the textile machine being made in the swivel joint 16 via a suction pipe 17.
- the swiveling movement of the suction nozzle 14 is carried out by a drive, not shown here, which is connected to the control device 8 via a line 19.
- the control device 8 also controls a valve (not shown here), as a result of which the suction pipe 17 is subjected to a vacuum from the suction channel 18.
- a valve not shown here
- the thread end 21 has reached a sensor device 22 arranged in the suction pipe 17.
- the presence of the thread end 21 in the suction pipe 17 is detected by the sensor device 22 and reported to the control device 8 via the line 23.
- the thread end 21 is checked whether the thread end 21 has already been unwound from the package so far at this point in time that the error detected by the cleaner 24 has already been unwound by the cheese 3. If this is the case, the unwinding and suctioning of the thread end 21 is stopped.
- the thread end 21 is held in the suction nozzle 14 by the negative pressure.
- FIG. 2 shows a curvature 25 of the suction pipe 17 with the sensor device 22.
- the measuring field 26 of the sensor device 22 is arranged in the vicinity of the smaller radius of the curvature 25 of the suction pipe 17.
- the suction pipe 17 has a recess 27 oriented in the running direction.
- the thread end 21 is detected by the air flow flowing in the direction of arrow 28 and tightened in the region of the recess 27.
- the thread end 21 lies against the part of the wall 29 of the suction pipe 17 which is located at the smaller radius, while in the tightened state it is spaced from the base 30 of the depression 27.
- the recess 27 begins in
- FIG 3 shows the suction pipe 17 and the sensor device 22 in the view AA of Figure 2.
- the sensor device 22 has a transmitter 31 and a receiver 32 and two holding arms 33.
- the transmitter 31 is the light source and the Receiver 32 designed as a photo sensor.
- the holding arms 33 are at least partially elastic. Such an embodiment of the sensor device 22 can be quickly positioned by simply plugging it onto the suction pipe 17.
- the sensor device 22 is positioned such that the depression 27 is located in the measuring field 26 between the transmitter 31 and the receiver 32.
- the thread end 21 runs in the recess 27.
- the distance between the transmitter 31 and the receiver 32 is substantially smaller than the diameter of the suction tube 17. The proximity of the transmitter 31 and receiver 32 always ensures reliable detection of the thread end.
- the air flow can move the thread end 21 transversely to the running direction. This movement makes use of an alternative embodiment of the sensor device 22, in which the sensor device 22 is designed as a motion detector.
- the thread end 21 can graze the side walls of the recess 27 by its movements transversely to the running direction or come so close to them that the surface of the suction pipe 17 is cleaned in this area. This counteracts soiling of the surface in the measuring field 26.
- the suction pipe 17 can, for example, be designed such that it has an outer diameter of 50 mm and a wall thickness of 2 mm, the distance between the side walls of the depression 27 being 6 mm.
- the suction pipe 17 according to the invention can be produced from transparent polypropylene in a particularly cost-effective manner.
- the suction pipe 17 can also be designed such that the cross section of the suction pipe 17 in the pipe section which has the depression 27 is kept largely the same as that of the pipe sections with a circular cross section. If, in the course of the air flow in the intake manifold 17, there is a point with a smaller or the narrowest cross section downstream of the measuring field 26, the thread end 21 in the measuring field 26 is subjected to thread tension particularly well.
- the recess 27 can begin well before the measuring field 26 in the suction pipe 17 and end far after the measuring field 26 in order to facilitate a very gradual change in the cross-sectional shape of the suction pipe 17. With a gradual change in the cross-sectional shape, the air flow is not or hardly disturbed.
- the detection of the thread end 21 is improved by means of the device according to the invention. This contributes to a higher productivity of the textile machine, because the faster and more reliably the detection of the thread end 21 can take place, the sooner the phases of the process following, for example, a piecing process can be started and the less the risk of having to repeat the entire piecing process , because the thread end 21 was not or only insufficiently detected by the suction nozzle 14.
- thread end encompasses the section of the thread which has been pulled off the cheese 3.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Quality & Reliability (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Looms (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004003174A DE102004003174A1 (de) | 2004-01-22 | 2004-01-22 | Vorrichtung zum Erkennen eines Fadens |
| PCT/EP2004/014785 WO2005070800A1 (de) | 2004-01-22 | 2004-12-29 | Vorrichtung zum erkennen eines fadens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1708947A1 true EP1708947A1 (de) | 2006-10-11 |
| EP1708947B1 EP1708947B1 (de) | 2007-11-14 |
Family
ID=34744976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04804371A Expired - Lifetime EP1708947B1 (de) | 2004-01-22 | 2004-12-29 | Vorrichtung zum erkennen eines fadens |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7504617B2 (de) |
| EP (1) | EP1708947B1 (de) |
| CN (1) | CN100542924C (de) |
| DE (2) | DE102004003174A1 (de) |
| WO (1) | WO2005070800A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012005988A1 (de) | 2012-03-23 | 2013-09-26 | Oerlikon Textile Gmbh & Co. Kg | Verfahren zum Betreiben einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine |
| WO2015029275A1 (ja) * | 2013-08-29 | 2015-03-05 | 村田機械株式会社 | 糸引出装置、糸巻取装置及び糸継方法 |
| JP2015148035A (ja) * | 2014-02-10 | 2015-08-20 | 村田機械株式会社 | 糸捕捉装置、及び、糸巻取機 |
| DE102014009203A1 (de) * | 2014-06-20 | 2015-12-24 | Saurer Germany Gmbh & Co. Kg | Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine |
| DE102014012419A1 (de) * | 2014-08-21 | 2016-02-25 | Saurer Germany Gmbh & Co. Kg | Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine |
| JP2017141106A (ja) * | 2016-02-12 | 2017-08-17 | 村田機械株式会社 | 糸監視装置 |
| JP2017141107A (ja) * | 2016-02-12 | 2017-08-17 | 村田機械株式会社 | 糸監視装置 |
| DE102016112641A1 (de) | 2016-07-11 | 2018-01-11 | Rieter Ingolstadt Gmbh | Spulstelle mit einer bewegbaren Deckeinheit |
| DE102016115731A1 (de) * | 2016-08-24 | 2018-03-01 | Saurer Germany Gmbh & Co. Kg | Saugvorrichtung zum Einsaugen eines Fadenendes eines auf einer Auflaufspule aufgespulten Fadens und Verfahren zum sensorischen Überwachen eines Saugkanalabschnitts der Saugvorrichtung |
| DE102017122851A1 (de) * | 2017-10-02 | 2019-04-04 | Maschinenfabrik Rieter Ag | Vorrichtung zum Ansetzen eines Fadens an einer Arbeitsstelle einer Textilmaschine mit einer Saugdüse und mit einem Zubringerorgan |
| DE102018125327A1 (de) * | 2018-10-12 | 2020-04-16 | Saurer Spinning Solutions Gmbh & Co. Kg | Fadenrohr für eine Auflaufspulen herstellende Textilmaschine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1147156B (de) * | 1959-05-15 | 1963-04-11 | Schweiter Ag Maschf | Saugduese zum Aufsuchen und Erfassen von Fadenenden an einer Spulmaschine |
| DE1276523B (de) | 1961-12-11 | 1968-08-29 | Reiners Walter Dr Ing | Pneumatische Vorrichtung zum Aufsuchen und Abziehen des Fadenanfanges einer Textilspule |
| US3728550A (en) | 1971-10-20 | 1973-04-17 | Maremont Corp | Device and method for detecting and withdrawing a predetermined length of yarn |
| DE2531044C2 (de) | 1975-07-11 | 1986-04-30 | W. Schlafhorst & Co, 4050 Mönchengladbach | Vorrichtung zum Suchen eines Fadenendes auf einer Spule |
| DE3833258A1 (de) * | 1988-09-30 | 1990-04-05 | Schlafhorst & Co W | Verfahren und vorrichtung zum vorbereiten von kopsen fuer eine spulmaschine |
| DE4308058A1 (de) * | 1993-03-13 | 1994-09-15 | Schlafhorst & Co W | Vorrichtung zum Erkennen eines Fadens in einem luftdurchströmten Kanal |
| DE4424462A1 (de) * | 1994-07-12 | 1996-01-18 | Schlafhorst & Co W | Vorrichtung zum Bereitlegen des Fadenendes an Spinnkopsen für den nachfolgenden Abspulprozeß an einer Spulmaschine |
| DE19640184B4 (de) * | 1996-09-30 | 2005-10-13 | Saurer Gmbh & Co. Kg | Verfahren zum Ausreinigen von Garnfehlern an einer Spulstelle einer Spulmaschine |
| JP4756411B2 (ja) * | 1998-03-25 | 2011-08-24 | ウステル・テヒノロジーズ・アクチエンゲゼルシヤフト | 長手方向に運動するテスト品の特性を測定する装置 |
| DE10123834A1 (de) * | 2001-05-16 | 2002-11-21 | Schlafhorst & Co W | Vorrichtung zum Aufwickeln eines laufenden Fadens auf eine Auflaufspule an einer Arbeitsstelle einer Textilmaschine |
-
2004
- 2004-01-22 DE DE102004003174A patent/DE102004003174A1/de not_active Withdrawn
- 2004-12-29 US US10/585,800 patent/US7504617B2/en not_active Expired - Fee Related
- 2004-12-29 CN CNB2004800392515A patent/CN100542924C/zh not_active Expired - Fee Related
- 2004-12-29 EP EP04804371A patent/EP1708947B1/de not_active Expired - Lifetime
- 2004-12-29 WO PCT/EP2004/014785 patent/WO2005070800A1/de not_active Ceased
- 2004-12-29 DE DE502004005542T patent/DE502004005542D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005070800A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100542924C (zh) | 2009-09-23 |
| US7504617B2 (en) | 2009-03-17 |
| DE502004005542D1 (de) | 2007-12-27 |
| US20080217462A1 (en) | 2008-09-11 |
| EP1708947B1 (de) | 2007-11-14 |
| WO2005070800A1 (de) | 2005-08-04 |
| CN1902115A (zh) | 2007-01-24 |
| DE102004003174A1 (de) | 2005-08-11 |
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