EP0932711B1 - Verfahren und vorrichtung zur beurteilung der garnqualität - Google Patents
Verfahren und vorrichtung zur beurteilung der garnqualität Download PDFInfo
- Publication number
- EP0932711B1 EP0932711B1 EP97941781A EP97941781A EP0932711B1 EP 0932711 B1 EP0932711 B1 EP 0932711B1 EP 97941781 A EP97941781 A EP 97941781A EP 97941781 A EP97941781 A EP 97941781A EP 0932711 B1 EP0932711 B1 EP 0932711B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measured values
- yarn
- yam
- friction
- measured
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/26—Arrangements facilitating the inspection or testing of yarns or the like in connection with spinning or twisting
Definitions
- the invention relates to a method and a device for assessing a yarn in terms of its quality.
- a first option is to fluctuate the mass of the yarn over its length seen to measure and count and deviate from an average rate.
- the yarn can be applied through an electric field or through a light beam be scanned.
- a second possibility is to increase the tensile strength of a yarn in a tensile test measure up.
- the behavior of the yarn in this tensile test in turn provides information about the Quality of the yarn.
- a third possibility is hairiness, i.e. the length, number or frequency of Measure the package of protruding fibers of the yarn.
- the one property concerns, e.g. the mass fluctuation, the Appearance of the yarn or the textile fabric made with it.
- Another Property e.g. the tensile strength is more concerned with physical properties or behavior in further processing
- Another property e.g. the hairiness is more concerned with that Touching the textile fabric produced with it, the feeling that arises in humans, that comes from the yarn etc.
- a disadvantage of the methods and devices known today for assessing the quality of a yarn is that the quality cannot be fully recorded with it.
- There are still aspects of the quality of a yarn by the known methods and Devices are not recognized.
- yarns that meet certain criteria and Properties have to be described as good because, for example, they are very even and are strong, yet problems with processing, e.g. when winding, weaving, etc. cause that limit the performance of the corresponding processing level.
- DE 3732513 describes a method and a device for measuring and Testing of staple fiber threads is known, with the yarn thickness in a first measuring process is sensed over a piece length of a piece of yarn. Then the yarn piece freed from its yarn twists and then the yarn diameter over the Piece length recorded. Both measured values are compared with each other and from the result is concluded on the character of the yarn. But this can only be the rotation of one Checked yarns and any properties associated with them are examined.
- DE 4411203 describes a device for measuring the torsional uniformity Twist, thread thickness, production speed and the length of threads known in which all these sizes in one pass of the thread through several sensors can be recorded. However, this only makes known aspects of the quality of one Yarns such as uniformity and twist in connection with influencing factors of the Performance determined.
- the invention as characterized in the claims, now solves the problem To create methods and an apparatus with which further aspects of the quality of a Yarns can be taken into account and presented by measured values, so that the quality of a yarn as a whole can be grasped further.
- the object is achieved in that for assessing a yarn with regard to its Quality, first measured values for at least one parameter of the yarn on one continuously moving yarn are detected, which previously exposed to friction is that second measurement of the at least one parameter of the yarn on that yarn are detected if the yarn is not previously subjected to friction and that the first and second measured values processed together to form a derived signal which is a measure of the quality of the yarn.
- a device for performing The method accordingly has at least one measuring head for detecting the first and second measured values for a parameter of the yarn, a friction element and a unit for processing the measured values from the measuring head according to claim 6 connected to this.
- Fig. 1 shows a device in the yarn 1 in the direction of the arrow in known and is therefore moved in a manner not shown here.
- the following are arranged along the yarn 1: a first measuring head 2, a friction element 3, a second measuring head 4 and a speedometer 5.
- a first measuring head 2 and 4 Via a line or a bus 6 and 7, the measuring heads 2 and 4 with one each Evaluation unit 8, 9 connected.
- These are in turn via lines 10, 11 or a bus connected to a unit 12 for signal processing, which has an output 13.
- the speedometer 5 is also connected to the unit 12 via a line 14. It is but it is quite possible to integrate the evaluation units 8 and 9 in the measuring heads 2 and 4. The same applies to the speedometer 5. In this somewhat more detailed Arrangement, however, the functions of the elements are easier to illustrate.
- the measuring heads 2, 4 with the evaluation units 8, 9 are known elements that are commercially available Gamprüf mar are known ago. As an example of such a game tester, see below the name USTER TESTER known devices or yarn cleaners from the company Called Zellweger Uster.
- the unit 12 for signal processing can, for example, as Be designed computer that a program for processing the measured values from the Lines 10 and 11 has.
- the speedometer 5 is an element, as in Textile engineering is also known.
- FIG. 2 shows another device with a measuring head 15 for a first yarn 16 and one second measuring head 17 for a second yarn 18.
- a friction element 19 is only the measuring head 17 upstream.
- Both measuring heads 15, 17 are in turn connected to evaluation units via lines 6, 7 8, 9 connected. Lines 10, 11 in turn connect them to a unit 12 Signal processing.
- FIG 3 shows a further device with a measuring head 20 and a friction element 21, one Evaluation unit 22 and a unit 23 for processing measured values.
- the friction element 21 is connected to the unit 23 via a line 24.
- FIG. 4 shows schematically and in simplified form a friction element that acts as a fixed drum 25 is formed, which is looped by the yarn 26.
- This preferably has a surface a non-textile material.
- FIG. 5 shows a rotatable drum 27, which has a braking device 28 via an axis of rotation is mechanically connected.
- Fig. 6 shows as a rubbing device a fixed bolt 29, of the yarn 30 only partially is entwined.
- Fig. 7 shows as a friction element two rollers 31, 32 which pinch the yarn 33 and stand still or only partially, against resistance, with the yarn 33 running along.
- Fig. 8 shows as a friction element two jaws 34, 35 which clamp the yarn 36.
- One of the cheeks 35 is supported by a spring and exerts a compressive force on the yarn 36 and the jaw 34 out. The effects of the friction elements from FIGS. 7 and 8 can thus be adjusted or controlled educated.
- the mode of action is as follows: While the yarn 1 (FIG. 1) is moved in its longitudinal direction, the measuring head 2 measures second measured values for a parameter of the yarn 1 that is not exposed to any particular friction. In the friction element 3, the yarn 1 is subjected to friction and the measuring head 4 measures first measured values for the parameter after the yarn 1 was exposed to friction. In the evaluation units 8, 9, the first and the second measured values are subjected to a first evaluation, which can mean, for example, that an average value of the parameter is calculated which is output together with the current measured value or that only a difference value to the average value is output. Such values are supplied via lines 10, 11 to unit 12, which generates a derived signal or third values from the supplied measured values from evaluation units 8 and 9. These are output via output 13.
- the unit 12 can calculate the signals from one another from the fixed distance a and the current speed of the yarn 1 as it is transmitted via line 14 in such a way that the signals from lines 10 and 11 respectively can be assigned to a specific section of the game.
- a yarn 16 can first reach the measuring head 15, then the measuring head 17, or yarn 16 can be a reference thread while yarn 18 is a yarn currently being measured.
- the yarn can be switched on and off periodically Friction element 21 are measured.
- the first measured values are switched on, the second Measured values measured with the friction element 21 switched off.
- the unit receives via line 24 23 the information when the friction element is switched off and when it is switched on, or it can even are controlled by the unit 23.
- the unit 23 then calculates the measured values consecutive yarn sections with each other to third values that the quality of the Specify yarn.
- the friction generated on the friction elements has a greater or lesser degree Change in the yarn. This change manifests itself in third measured values, the are output by the unit 23.
- the friction can also be more or less regardless of the current speed of the yarn, what with a 5 or 7 can succeed particularly when the drums 27th or rollers 31, 32 controllable, depending on the yarn speed can. 1, the friction element 3 can also be connected to the speedometer via a line 37 5 be connected.
- Certain yarns have an unstable surface structure. They are hairy and the hair are not firmly anchored in the surface. In the event of friction or deflection, the hair will come on postponed the friction point and lead to local thickening, which the character of Have nits and are counted as such by game testers like USTER TESTER become. To measure real nits, therefore, the friction and the number of deflections be kept to a minimum. However, sensitive yarns are judged too positively because the next processing step creates further nits.
- the number is preferably suitable as parameters that can be measured on the yarn Nits per yarn length or the number of diameter deviations that a set size exceed. Therefore, the speedometer 5 is preferably designed so that it can also output a signal to the unit 12 which indicates the detected thread length.
- the 3rd values show that by subtracting the 2nd Measured values from the 1st measured values arose that there were deviations between the 2nd Measured values, i.e. values that are measured on yarn without friction and 1.
- Measured values values that are measured on yarn with the influence of friction exist and one Provide information about the quality of the yarn. You can get similar results if you do Carries out measurements with other parameters not listed here.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
Während das Garn 1 (Fig. 1) in seiner Längsrichtung bewegt wird, misst der Messkopf 2 zweite Messwerte für einen Parameter des Garns 1, das keiner besonderen Reibung ausgesetzt ist. Im Reibelement 3 wird das Garn 1 einer Reibung ausgesetzt und der Messkopf 4 misst erste Messwerte für den Parameter nachdem das Garn 1 einer Reibung ausgesetzt war. In den Auswerteeinheiten 8, 9 werden die ersten und die zweiten Messwerte einer ersten Auswertung unterzogen, was beispielsweise bedeuten kann, dass ein Mittelwert des Parameters errechnet wird, der zusammen mit dem aktuellen Messwert ausgegeben wird oder dass nur ein Differenzwert zum Mittelwert ausgegeben wird. Solche Werte werden über die Leitungen 10, 11 der Einheit 12 zugeführt, die ein abgeleitetes Signal oder dritte Werte aus den zugeführten Messwerten aus den Auswerteeinheiten 8 und 9 erstellt. Diese werden über den Ausgang 13 ausgegeben. Da die beiden Messköpfe 2 und 4 räumlich auseinanderliegen, kann die Einheit 12 aus dem festen Abstand a und der aktuellen Geschwindigkeit des Garnes 1 wie sie über Leitung 14 übermittelt wird, die Signale so miteinander verrechnen, dass die Signale aus den Leitungen 10 und 11 jeweils einem bestimmten Gamabschnitt zugeordnet werden können.
1. Messwerte | 2. Messwerte | 3 Werte | |
8.48 | 7.8 | 0.68 | |
8.29 | 7.61 | 0.68 | |
8.4 | 7.55 | 0.85 | |
8.41 | 7.7 | 0.71 | |
8.46 | 7.58 | 0.88 | |
8.42 | 7.52 | 0.9 | |
8.44 | 7.41 | 1.03 | |
8.38 | 7.3 | 1.08 | |
8.28 | 6.8 | 1.48 | |
8.34 | 6.93 | 1.41 | |
Mittelwert: | 8.39 | 7.42 | 0.97 |
1. Messwerte | 2. Messwerte | 3. Werte | ||||
Dünn | Dick | Dünn | Dick | Dünn | Dick | |
76 | 60 | 31 | 11 | 45 | 49 | |
58 | 63 | 29 | 7 | 29 | 56 | |
53 | 59 | 36 | 13 | 17 | 46 | |
73 | 53 | 29 | 3 | 44 | 50 | |
61 | 54 | 32 | 9 | 29 | 45 | |
71 | 58 | 19 | 8 | 52 | 50 | |
59 | 74 | 23 | 5 | 36 | 69 | |
61 | 67 | 15 | 7 | 46 | 60 | |
46 | 55 | 7 | 3 | 39 | 52 | |
57 | 50 | 11 | 1 | 46 | 49 | |
Mittelwerte: | 154/km | 58/km | 96/km | |||
148/km | 17/km | 131/km |
1. Messwert | 2. Messwert | 3. Werte | |
187 | 9 | 178 | |
209 | 4 | 205 | |
230 | 7 | 223 | |
222 | 1 | 221 | |
214 | 8 | 206 | |
202 | 2 | 200 | |
196 | 2 | 194 | |
218 | 7 | 211 | |
215 | 5 | 210 | |
189 | 1 | 188 | |
Mittelwert: | 520/km | 12/km | 508/km |
1. Messwert | 2. Messwert | 3. Werte | |
4.43 | 4.18 | 0.25 | |
4.38 | 4.18 | 0.2 | |
4.37 | 4.14 | 0.23 | |
4.39 | 4.16 | 0.23 | |
4.42 | 4.14 | 0.28 | |
4.44 | 4.15 | 0.29 | |
4.43 | 4.1 | 0.33 | |
4.38 | 4.06 | 0.32 | |
4.34 | 4.02 | 0.32 | |
4.34 | 4.0 | 0.34 | |
Mittelwert: | 4.39 | 4.11 | 0.28 |
Claims (10)
- Verfahren zur Beurteilung eines Garnes hinsichtlich seiner Qualität, wobei erste und zweite Messwerte für mindestens einen Parameter des Garnes erfasst werden und die ersten und die zweiten Messwerte zusammen zu einem abgeleiteten Signal verarbeitet werden, das ein Mass für eine Qualität des Garnes bildet, dadurch gekennzeichnet, dass die ersten und zweiten Messwerte an einem kontinuierlich bewegten Garn (1) erfasst werden und dass das Garn bei der Erfassung der ersten Meßwerte vorausgehend einer Reibung ausgesetzt wird und bei der Erfassung der zweiten Messwerte keiner Reibung ausgesetzt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass erste und zweite Messwerte am selben Stück Gam in Serie erfasst werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass erste und zweite Messwerte am Garn (16, 18) parallel erfasst werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Messwerte die Anzahl kurzwelliger Masseabweichungen gemessen werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Reibung durch Reibung des Garns an einem Reibelement (25) aus nicht textilem Material erzeugt wird.
- Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, mit mindestens einem Messkopf (2, 4, 15, 17, 20) zur Erfassung von ersten und/oder zweiten Messwerten für einen Parameter des Garns, gekennzeichnet durch ein Reibelement (3, 18, 21), welches das Garn zwischen der Erfassung des ersten Meßwertes einer Reibung aussetzt, und durch einen Meßkopf (4, 17, 20) zur Erfassung zweiter Meßwerte, wenn das Garn keiner Reibung ausgesetzt wird, und durch eine Einheit (12, 22, 23), die zur Verarbeitung der Messwerte aus dem mindestens einen Messkopf in ein ans den ersten und zweiten Meßwerten abgeleiteles Signal an diesen angeschlossen ist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Einheit (23) zur Verarbeitung von Messwerten zu deren Ansteuerung mit dem Reibelement (21) verbunden ist.
- Vorrichtung nach Anspruch 6, gekennzeichnet durch zwei Messköpfe (2, 4), die beide mit der Einheit (12) für die Verarbeitung von Messwerten verbunden sind.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Reibelement mindestens teilweise durch das Garn umschlungen ist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Reibelement (27, 35) in seiner Wirkung einstellbar ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH251496 | 1996-10-15 | ||
CH251496 | 1996-10-15 | ||
PCT/CH1997/000381 WO1998016673A1 (de) | 1996-10-15 | 1997-10-08 | Verfahren und vorrichtung zur beurteilung der garnqualität |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0932711A1 EP0932711A1 (de) | 1999-08-04 |
EP0932711B1 true EP0932711B1 (de) | 2003-04-09 |
Family
ID=4235505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97941781A Expired - Lifetime EP0932711B1 (de) | 1996-10-15 | 1997-10-08 | Verfahren und vorrichtung zur beurteilung der garnqualität |
Country Status (6)
Country | Link |
---|---|
US (1) | US6430995B1 (de) |
EP (1) | EP0932711B1 (de) |
JP (1) | JP3890609B2 (de) |
CN (1) | CN1082576C (de) |
DE (1) | DE59709801D1 (de) |
WO (1) | WO1998016673A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7175136B2 (en) | 2003-04-16 | 2007-02-13 | The Boeing Company | Method and apparatus for detecting conditions conducive to ice formation |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1404761A (en) | 1970-05-26 | 1975-09-03 | Toyoda Automatic Loom Works | Method of controllig a spinning operation |
US4758968A (en) * | 1985-05-16 | 1988-07-19 | North Carolina State University | Method and apparatus for continuously measuring the variability of textile strands |
IT1198230B (it) * | 1986-12-23 | 1988-12-21 | Savio Spa | Procedimento per individuare la velocita' e i paramenti operativi ottimali di roccatura per ogni tipo di filato |
CH671973A5 (de) * | 1987-03-19 | 1989-10-13 | Zellweger Uster Ag | |
US4766647A (en) * | 1987-04-10 | 1988-08-30 | Spinlab Partners, Ltd. | Apparatus and method for measuring a property of a continuous strand of fibrous materials |
DE3732513C2 (de) | 1987-09-26 | 1996-07-18 | Schlafhorst & Co W | Verfahren und Vorrichtung zum Messen und Prüfen von Stapelfasergarn |
DE4124626C2 (de) | 1991-07-25 | 1994-06-30 | Kugelfischer G Schaefer & Co | Vorrichtung zur Messung der Windungszahl und/oder der Knoten bzw. Fadendicken von textilen Fäden |
DE4411203A1 (de) | 1994-03-31 | 1995-10-05 | Temco Textilmaschkomponent | Vorrichtung zur Messung des Verwindungsgleichmaßes, der Drehungen/m, Fadendicken, der Produktionsgeschwindigkeit sowie der Lauflängen von Fäden |
-
1997
- 1997-10-08 US US09/269,932 patent/US6430995B1/en not_active Expired - Fee Related
- 1997-10-08 WO PCT/CH1997/000381 patent/WO1998016673A1/de active IP Right Grant
- 1997-10-08 CN CN97198179A patent/CN1082576C/zh not_active Expired - Fee Related
- 1997-10-08 JP JP51787398A patent/JP3890609B2/ja not_active Expired - Fee Related
- 1997-10-08 EP EP97941781A patent/EP0932711B1/de not_active Expired - Lifetime
- 1997-10-08 DE DE59709801T patent/DE59709801D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1231707A (zh) | 1999-10-13 |
CN1082576C (zh) | 2002-04-10 |
JP2001502018A (ja) | 2001-02-13 |
WO1998016673A1 (de) | 1998-04-23 |
JP3890609B2 (ja) | 2007-03-07 |
EP0932711A1 (de) | 1999-08-04 |
DE59709801D1 (de) | 2003-05-15 |
US6430995B1 (en) | 2002-08-13 |
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