EP0740639B1 - Verfahren und vorrichtung zur erkennung einer fadenaufspulung auf einer rotierenden walze - Google Patents
Verfahren und vorrichtung zur erkennung einer fadenaufspulung auf einer rotierenden walze Download PDFInfo
- Publication number
- EP0740639B1 EP0740639B1 EP95940113A EP95940113A EP0740639B1 EP 0740639 B1 EP0740639 B1 EP 0740639B1 EP 95940113 A EP95940113 A EP 95940113A EP 95940113 A EP95940113 A EP 95940113A EP 0740639 B1 EP0740639 B1 EP 0740639B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- roller
- monitoring region
- yarn
- light source
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004804 winding Methods 0.000 title abstract description 42
- 230000008569 process Effects 0.000 title abstract description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 36
- 238000009987 spinning Methods 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000011156 evaluation Methods 0.000 abstract description 13
- 230000004044 response Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000007257 malfunction Effects 0.000 description 4
- 239000000700 radioactive tracer Substances 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- B65H63/003—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to winding of yarns around rotating cylinders
-
- 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 method for recognizing a Thread winding on a rotating roller according to the generic term of claim 1 and a device for Execution of this procedure.
- the coil diameter of a winding body in particular a spool of a synthetic thread to determine a pivotally arranged sensing roller.
- the feeler roller lies on the winding body and rotates with it this. If there is a thread malfunction in the area of the feeler roller, so the thread can be wound on the feeler roller will.
- Such an unwanted thread winding leads to a malfunction.
- the malfunction can also in a traversing device upstream of the winding head lead to a disturbance and in a short time by itself rapidly increasing volume of thread winding on the Tracer roller considerable damage to the thread winding device cause.
- the present invention is therefore based on the object a method for early detection of an unwanted Winding up anywhere in the monitored area a rotating roller in a thread processing or to specify thread winding device which is safe and works reliably.
- a device is also to be specified by means of which the detection of a winding thread on a roller of such a device with high functional reliability and a short response time.
- the method according to the invention opens a new path to Detection of thread winding on a rotating, partial walked on by the thread wound roller. It is proposed to do this by a light source Beams of light at an angle of incidence a to a surface line to project the roller onto the roller in such a way that this over the entire length of the surveillance area
- the roller extends as a strip of light and this from the thread winding reflected scattered light by means of a sensor device to detect and trigger an alarm signal, if at least a thread wrap in the monitoring area of the roller has been determined.
- the position of the light sensor results themselves from the claims.
- the evaluation device with respect to the monitoring area of the Radial vibrations of the roller have no influence on the detection of the thread. This may result in already found a single thread wrap on the roller will.
- an arrangement of the light sensor is also possible in other areas.
- the measure, the roller with a grinding incidental, parallel or yourself Irradiating widening light beam offers in particular the advantage that the entire surveillance area between two normal planes at a distance from each other Roller is set with a single light source and associated imaging optics is illuminated when the angle of attack a is correctly set to the roll surface. This depends on the amplitude of the vibrations of the Roll in winding operation, the manufacturing tolerances at Manufacture of the roller and the height of any existing Thrust rings on the roller.
- This angle of attack ⁇ lies in Range between 3 ° and 10 °, preferably at 5 ° and in individual cases on the basis of the structural conditions Attempt found.
- a winder is detected therefore simultaneously throughout the surveillance area in the state of the art only a selective detection by successive measurements was possible.
- the finding of the thread then takes place in that the thread, which from a plurality of filaments, light reflects and as it were on the roller of the thread winding device flashes. This flashing is from the evaluation device recognized as scattered light and then triggered a signal.
- Irradiation of the sensing roller over the entire surveillance area with a grinding light beam therefore make sure that the thread flashes, even if there are one or a few turns, there the roller itself emits little light towards the light sensor reflects and therefore the incident stray light as a deviation from any existing basic radiation is recognized.
- the light is preferably monochrome.
- the roller can e.g. B. be irradiated by means of a laser light source. This is not necessary, but it has the advantage of possibly required lens systems of imaging optics easier to be able to interpret, because the monochrome light a uniform Has wavelength and corrections to the lenses only for this uniform wavelength must be taken into account. Also can be disturbed by external influences of the day or Ambient light can be switched off more easily with filters.
- a laser light source is preferably an inexpensive one Possibility of a sharply defined light beam monochrome To provide light. Electronic laser light sources that working in near-infrared wavelength ranges are for preferred the present invention.
- the roller is the thread delivery or thread take-off roller (godet) of a filament spinning machine can be.
- it is preferably the contact or Tracer roller of a thread winding device in such a Spinning machine for synthetic filament threads, the basic one Structure, for example, from US-A-5,029,762 is known.
- an optoelectric device (light sensor) has, which in a preferred embodiment in essentially in the middle of the surveillance area and with Distance is arranged on the side of the roller that is not is wrapped in the thread, as well as an evaluation device, which triggers a signal.
- the optoelectric device is preferably electrical with the evaluation device connected.
- Thread winding on the rotating roller reflected light is detected and fed into an evaluation device preferably standing electrical signal converted, the evaluation device when exceeded a tolerance limit triggers another signal at which it is an alarm signal or a thread cutting signal can act.
- the device comprises an outside of the surveillance area arranged light source, the one Beams of light in the longitudinal direction of the roller and under one small angle of attack to the roller aimed at this.
- the Light source preferably emits monochrome light, for example the light of a laser light source.
- it can a rectangular in cross section or a Monitoring area adapted, expanded with suitable optics Be a bundle of light.
- the optoelectric device preferably comprises one Imaging optics with one arranged behind a converging lens Light sensor.
- the light sensor can be a CCD array or a photodiode.
- a sensor in the form of a CCD array the advantage that this is read out according to the clock signal can be.
- a sensing roller Thread take-up device can measure the measured values of the light sensor (Interference reflections) from this area easily with digital logic be hidden.
- the electronics enable one quick response to errors in the millisecond range can lie.
- the feeler roller 1 is at a distance from the feeler roller by means of two and arranged opposite to each other, in one Radial plane lying light sources 3, 4 irradiated. Of the Angle of attack a, under which the beam of light or rays 5 occurs on the feeler roller 1, is chosen so pointed that each area of the optoelectric device (light sensor) 6 - 8 facing side of the surveillance area the roller 1 is illuminated.
- the light sources 3, 4 emit a light beam 5 with a rectangular cross section a width of about 10 mm and a depth of a few mm, preferably 1 mm. This is done with, for example achieved collimator optics, not shown, the includes cylindrical lenses.
- the light beam 5 is in each case in the monitoring area of roller 1 as a line or as in The circumferential direction of the roller is very narrow, along a surface line running light band 50 projected onto the roller. To cover the entire monitoring area 20 between two in the Spaced normal planes of the roller 1 is formed, To illuminate, the light sources 3, 4 are on the side outside of the monitoring area 20.
- an optoelectric device (Light sensor) 6 - 8 essentially in the center the monitoring area 20 of the roller 1.
- the facility comprises a converging lens 7, behind which a light sensor 8 is arranged.
- the light sensor 8 is made of photodiodes built up the striking light into a photo stream 15 convert.
- a mask 9 is arranged in front of the light sensor 8, which hides the area of the thrust rings 2.
- the light sensor 8 is equipped with an evaluation device 10 and these are electrically connected to an alarm display device 11.
- the present invention eliminates the undesirable Winding a thread on a feeler roller 1 over the early detection of the entire length of the monitoring area 20, especially after one or a few loops, so that a thread cut can be triggered before consequential damage arise on the winding machine.
- the response times of both possible sensors are clear less than 2 milliseconds. This response time is sufficient at winding speeds of 8000 m / min and at one Tracer roller diameter of 85 mm for consequential damage to the to avoid endangered components of the winding device.
- FIG. 1 shows a modified device for winder monitoring according to Fig. 1.
- Fig. 1 There is the image from the Perspective of the incident light beam 5, which from the Light source 3 via an optical system which comprises the lenses 16, 17 on the feeler roller 1, not shown here is projected.
- the reflected light 13 is through deflected the convex surface of the lens 17 and on the opto-electrical evaluation device (light sensor) 7 - 8 depicted in the beam path of the reflected light rays 13 is arranged, this detected and in a photo stream 15 converts.
- the difference signal is in the Evaluation device 10 then amplified and can be exceeded an alarm device of a predefinable threshold value 11 or the like.
- the advantage of the arrangement according to FIG. 2 is that no components of the monitoring device in the immediate vicinity Must be attached close to the feeler roller 1 to be monitored, so that the designer has greater freedom in terms of housing, assembly and maintenance of the light source 3 (Transmitter) and the light sensor 7, 8 (receiving part) and the has an intermediate look.
- FIG. 3 finally shows a schematic arrangement in FIG a radial plane of the roller 1, which in the present case has no thrust rings, for example the location of the Light source 3 with respect to the roller 1, namely outside of Monitoring area 20 of this roller. It also shows that Assignment of the light sensor 6-8 to detect the at an im Monitoring area 20 possible thread winding 12 generated Flare. This stray light is created by reflection, Diffraction and refraction of the incident light beam 5 to the fine filament threads (capillary threads) of the thread winding, the are predominantly opaque.
- the light sensor 6-8 is arranged on the side of the roller 1 be above the roller 1, d. H. above the tangential plane the roller 1, in which the light band 50 lies.
- the light sensor 6-8 can be arranged anywhere be. It only has to be guaranteed that the light sensor 6-8 that arises on a thread or a thread winding Scattered light and not that reflected by the roller 1 itself Beam of light measures and as a deviation of a photo stream clear differences in light intensity can be determined.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Quality & Reliability (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
- Fig. 1
- eine schematische Anordnung der Tastwalze eines Spulkopfes mit einer Einrichtung zur Wicklerüberwachung;
- Fig. 2
- eine modifizierte Einrichtung gemäß Fig. 1 mit einer anderen Anordnung des Lichtsensors;
- Fig. 3
- das von der Lichtquelle auf eine Mantelline der Walze und das von der Walze reflektierte Lichtbündel in einer Radialebene der Walze.
Claims (20)
- Verfahren zur Erkennung einer Fadenaufspulung (12) (= Wickler) auf einer rotierenden Walze (1), die von einem Faden teilweise umschlungen ist, bei dem das Lichtbündel einer Lichtquelle (3, 4) auf einen Überwachungsbereich der Walze (1) gerichtet wird, indem die Lichtquelle (3,4) außerhalb des Überwachungsbereichs angeordnet und schräg auf den Überwachungsbereich gerichtet ist,dadurch gekennzeichnet, daßund bei dem das aus dem Überwachungsbereich reflektierte Licht durch einen Lichtsensor (6-8) erfaßt wird,und die Lichtquelle (3, 4) und der Lichtsensor (6-8) auf der Seite der Walze (1) liegen, die nicht von dem Faden umschlungen ist,das Lichtbündel (5) derart auf die Walze (1) gerichtet wird, daß es sich als Lichtband (50) auf einer Mantellinie der Walze (1) abbildet und den Überwachungsbereich abdeckt,und daß der Lichtsensor (6-8) außerhalb des von der Lichtquelle (3, 4) auf den Überwachungsbereich (20) gerichteten und außerhalb des von der Walze (1) reflektierten Lichtbündels (5) angeordnet ist.
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daßdas Lichtband (50) eine Breite von weniger als 5 mm, vorzugsweise weniger als 2 mm aufweist. - Verfahren nach Anspruch 1 bis 2,
dadurch gekennzeichnet, daßdas Lichtbündel (5) unter einem Anstellwinkel a zwischen 3 und 8°, vorzugsweise etwa 5° auf die Walze (1) gerichtet ist. - Verfahren nach Anspruch 1 bis 3,
dadurch gekennzeichnet, daßdie Welle (1) mit monochromem Licht bestrahlt wird. - Verfahren nach Anspruch 4,
dadurch gekennzeichnet, daßdie Lichtstrahlen (5) das Licht einer Laserlichtquelle sind. - Verfahren nach Anspruch 1 bis 5,
dadurch gekennzeichnet daßdie Walze (1) durch zwei Lichtquellen (3, 4), die sich gegenüberliegen, mit jeweils einem Lichtbündel (5) derart bestrahlt wird, daß auf der Walze (1) im Überwachungsbereich (20) ein im wesentlichen gemeinsames Lichtband (50) abgebildet wird, und daß der Lichtsensor (6-8) außerhalb der von den Lichtquellen (3, 4) auf den Überwachungsbereich (20) der Walze (1) gerichteten und der von der Walze (1) reflektierten Lichtbündel (5) angeordnet ist. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daßdie Walze (1) die Tastwalze einer Fadenaufspulvorrichtung für synthetische Endlosfäden ist. - Verfahren nach Anspruch 1 bis 7,
dadurch gekennzeichnet, daßder Lichtsensor 6-8) zur Erfassung des von einer Fadenaufspulung (12) reflektierten Lichtes im wesentlichen mittig über dem Überwachungsbereich der Walze (1) angeordnet ist. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daßder Lichtsensor (6 -8) zur Erfassung des von einer Fadenaufspulung (12) reflektierten Lichtes im Strahlengang parallel zu der die Lichtstrahlen (5) emittierenden Lichtquelle (3) angeordnet ist. - Verfahren nach Anspruch 9,
dadurch gekennzeichnet, daßdas von dem Lichtsensor (6 - 8) empfangene Licht als elektrischen Signals (15) erfaßt und dessen Änderung zur Auslösung eines Alarmsignals verstärkt wird. - Vorrichtung zur Erkennung einer Fadenaufspulung (12) (Wickler) auf einer rotierenden Walze (1) einer Fadenbearbeitungs- oder Fadenaufspulvorrichtung zur Ausübung des Verfahrens nach den Ansprüchen 1 bis 10, mit einer Lichtquelle (3, 4) zur Bestrahlung der Walze (1) in einem Überwachungsbereich und einem Lichtsensor (6-8) zur Erfassung des aus dem Überwachungsbereich reflektierten Lichtes,
dadurch gekennzeichnet, daßdie Lichtquelle (3, 4) unter einem solchen Anstellwinkel α auf den Überwachungsbereich (20) der Walze (1) gerichtet ist, daß im Überwachungsbereich ein Lichtband (50) auf einer Mantellinie der Walze (1) abgebildet wird, das die Länge des Überwachungsbereichs abdeckt, und daß der Lichtsensor (6-8) außerhalb des von der Lichtquelle (3, 4) auf den Überwachungsbereich (20) der Walze (1) gerichteten und außerhalb des von der Walze (1) reflektierten Lichtbündels (5) angeordnet ist. - Vorrichtung nach Anspruch 11,
dadurch gekennzeichnet, daßder Anstellwinkel (α) der Lichtquelle (3) zur Drehachse der Walze (1) zwischen 3 und 10°, insbesondere bei 5°, liegt. - Vorrichtung nach Anspruch 11 oder 12,
dadurch gekennzeichnet, daßdie Walze (1) von der Lichtquelle (3) mit monochromem Licht bestrahlt wird, das vorzugsweise von einer Laserlichtquelle emittiert wird. - Vorrichtung nach Anspruch 11 bis 13,
dadurch gekennzeichnet, daßzwei Lichtquellen (3, 4) unter einem solchen Anstellwinkel α auf den Überwachungsbereich (20) der Walze (1) gerichtet sind, daß im Überwachungsbereich (20) der Walze (1) ein im wesentlichen gemeinsames Lichtband (50) abgebildet wird,das die Länge des Überwachungsbereichs (20) abdeckt, und daß der Lichtsensor (6-8) außerhalb der von den beiden Lichtquellen (3, 4) im Überwachungsbereich (20) auf die Walze (1) gerichteten und der von der Walze (1) reflektierten Lichtbündel (5) angeordnet ist. - Vorrichtung nach Anspruch 11 bis 14,
dadurch gekennzeichnet, daßder Lichtsensor (6-8) eine im Strahlengang des von der Fadenaufspulung (12) reflektierten Lichtbündels (5) angeordnete Sammellinse (7) aufweist. - Vorrichtung nach Anspruch 11 bis 15,
dadurch gekennzeichnet, daßder Lichtsensor (8) ein CCD-Array aufweist. - Vorrichtung nach Anspruch 11 bis 15,
dadurch gekennzeichnet, daßder Lichtsensor (8) eine Fotodiode aufweist. - Vorrichtung nach mindestens einem der Ansprüchen 11 bis 17, bei der die Walze (1) mehrere in axialem Abstand ausgebildete Anlaufringe (2) aufweist,
dadurch gekennzeichnet, daßim Strahlengang zwischen der Sammellinse (7) und dem Lichtsensor (8) eine Maske (9) angeordnet ist. - Vorrichtung nach einem der Ansprüche 11 bis 18,
dadurch gekennzeichnet, daßdie Walze (1) die Tastwalze (1) einer Fadenaufspulvorrichtung oder eine Fadenfördergalette einer Spinnmaschine für synthetische Fäden ist. - Vorrichtung nach Anspruch 11,
dadurch qekennzeichnet, daßder Lichtsensor (6-8) in einer Ebene angeordnet ist, die parallel zu der Ebene ist, in der die Lichtquelle (3) liegt, die das Lichtbündel (5) auf die Walze (1) richtet.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4441736 | 1994-11-23 | ||
| DE4441736 | 1994-11-23 | ||
| PCT/DE1995/001625 WO1996015969A1 (de) | 1994-11-23 | 1995-11-22 | Verfahren und vorrichtung zur erkennung einer fadenaufspulung auf einer rotierenden walze |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0740639A1 EP0740639A1 (de) | 1996-11-06 |
| EP0740639B1 true EP0740639B1 (de) | 1998-08-26 |
Family
ID=6533979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95940113A Expired - Lifetime EP0740639B1 (de) | 1994-11-23 | 1995-11-22 | Verfahren und vorrichtung zur erkennung einer fadenaufspulung auf einer rotierenden walze |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5767963A (de) |
| EP (1) | EP0740639B1 (de) |
| CN (1) | CN1069602C (de) |
| DE (2) | DE19543118A1 (de) |
| WO (1) | WO1996015969A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964391A (en) * | 1997-10-24 | 1999-10-12 | E. I. Du Pont De Nemours And Company | Wrap detection device |
| DE19941722A1 (de) * | 1999-09-02 | 2001-03-08 | Schlafhorst & Co W | Vorrichtung zum Überwachen einer unerwünschten Fadenwickelbildung auf einer Walze einer Textilmaschine |
| DE10057170A1 (de) * | 2000-11-16 | 2002-05-23 | Rieter Ag Maschf | Ermittlung von Störstellen |
| ITMI20042528A1 (it) * | 2004-01-10 | 2005-03-28 | Saurer Gmbh & Co Kg | Metodo e dispositivo per rilevare l'avvolgimento di una fibra nonche'macchina per il taglio di fibre |
| DE102007062631B4 (de) | 2007-12-22 | 2018-07-26 | Saurer Germany Gmbh & Co. Kg | Vorrichtung zur Überwachung einer unerwünschten Fadenwickelbildung in einer Textilmaschine |
| US7590314B1 (en) * | 2008-09-04 | 2009-09-15 | Spirit Aerosystems, Inc. | Fiber optic sensor for tow wrap |
| US9333548B2 (en) * | 2013-08-12 | 2016-05-10 | Victaulic Company | Method and device for forming grooves in pipe elements |
| DE102014011937A1 (de) * | 2014-08-12 | 2016-02-18 | Saurer Germany Gmbh & Co. Kg | Vorrichtung zum Detektieren einer unerwünschten Fadenwickelbildung |
| FR3033322B1 (fr) * | 2015-03-06 | 2019-09-13 | Saurer Germany Gmbh & Co. Kg | Procede et dispositif de detection de la fin de devidage d'un element filiforme |
| JP7119970B2 (ja) * | 2018-12-12 | 2022-08-17 | トヨタ自動車株式会社 | 位置検出方法及び位置検出装置 |
| EP4149870B1 (de) * | 2020-05-12 | 2024-04-24 | Thema 2 S.R.L. | Vorrichtung und verfahren zur automatischen überprüfung der qualität einer fadenspule für gewebe |
| WO2022067756A1 (zh) * | 2020-09-30 | 2022-04-07 | 深圳烯湾科技有限公司 | 一种纤维缠绕并固化的控制方法、光固化式纤维缠绕装置 |
| CN112408099B (zh) * | 2020-11-26 | 2022-09-13 | 重庆市齐垚机电设备有限公司 | 一种管子收卷监测系统、管子收卷装置及管子收卷方法 |
| DE102023116979A1 (de) | 2023-06-28 | 2025-01-02 | Maschinenfabrik Rieter Ag | Verfahren zur Überwachung wenigstens einer Walze eines Streckwerks einer Textilmaschine, Textilmaschine sowie Verwendung einer Überwachungseinheit |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE885908C (de) * | 1950-12-08 | 1953-08-10 | Bobingen Ag Fuer Textil Faser | Wickelschutz fuer Walzenanordnungen |
| US3712743A (en) * | 1971-01-05 | 1973-01-23 | Eastman Kodak Co | Apparatus for detecting and measuring yarn defects and irregularities |
| US4108708A (en) * | 1975-01-09 | 1978-08-22 | Milliken Research Corporation | Scrim machine |
| GB1557167A (en) * | 1975-06-30 | 1979-12-05 | Ici Ltd | Method and apparatus for detecting yarn on rods and severing the yarn |
| US4188545A (en) * | 1975-06-30 | 1980-02-12 | Imperial Chemical Industries Limited | Yarn processing, method and apparatus |
| NL7508287A (nl) * | 1975-07-11 | 1977-01-13 | Philips Nv | Werkwijze en inrichting voor het in vorm trek- ken van een schaduwmasker en schaduwmasker ge- trokken volgens deze werkwijze of met deze in- richting. |
| DE3133494C2 (de) * | 1981-08-25 | 1984-11-22 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Opto-elektronische Überwachungsvorrichtung |
| JPS6262937A (ja) * | 1985-09-10 | 1987-03-19 | Murata Mach Ltd | 巻糸パツケ−ジの巻形検査装置 |
| DE3805068A1 (de) * | 1988-02-18 | 1989-08-31 | Gebhard Birkle | Verfahren und vorrichtung zum optischen abtasten einer objektebene zwecks erkennung sich aendernder ueberhoehungen auf dieser ebene |
| DE8916288U1 (de) * | 1988-12-22 | 1997-05-22 | Barmag Ag, 42897 Remscheid | Aufspulmaschine |
| DE4131664A1 (de) * | 1991-09-23 | 1993-03-25 | Rieter Ingolstadt Spinnerei | Verfahren und vorrichtung zum erfassen von garnfehlern |
| SE511091C2 (sv) * | 1993-04-21 | 1999-08-02 | Sipra Patent Beteiligung | Garnmatare för textilmaskiner |
-
1995
- 1995-11-18 DE DE19543118A patent/DE19543118A1/de not_active Withdrawn
- 1995-11-22 EP EP95940113A patent/EP0740639B1/de not_active Expired - Lifetime
- 1995-11-22 US US08/682,583 patent/US5767963A/en not_active Expired - Fee Related
- 1995-11-22 WO PCT/DE1995/001625 patent/WO1996015969A1/de not_active Ceased
- 1995-11-22 DE DE59503337T patent/DE59503337D1/de not_active Expired - Fee Related
- 1995-11-22 CN CN95191320A patent/CN1069602C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1139412A (zh) | 1997-01-01 |
| DE59503337D1 (de) | 1998-10-01 |
| WO1996015969A1 (de) | 1996-05-30 |
| EP0740639A1 (de) | 1996-11-06 |
| DE19543118A1 (de) | 1996-05-30 |
| US5767963A (en) | 1998-06-16 |
| CN1069602C (zh) | 2001-08-15 |
Similar Documents
| Publication | Publication Date | Title |
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