DE1535086A1 - Method for determining the speed and length of textile threads - Google Patents
Method for determining the speed and length of textile threadsInfo
- Publication number
- DE1535086A1 DE1535086A1 DE19651535086 DE1535086A DE1535086A1 DE 1535086 A1 DE1535086 A1 DE 1535086A1 DE 19651535086 DE19651535086 DE 19651535086 DE 1535086 A DE1535086 A DE 1535086A DE 1535086 A1 DE1535086 A1 DE 1535086A1
- Authority
- DE
- Germany
- Prior art keywords
- thread
- speed
- voltage
- pair
- running time
- 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.)
- Pending
Links
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H61/00—Applications of devices for metering predetermined lengths of running material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/04—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B7/042—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
- G01B7/044—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length using capacitive means
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- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
Verfahren zur Geschwindikeits- und Längenbestimmung von Textilfäden Die Erfindung bezieht sich auf ein Verfahren und eine Einrichtung zum Messen und Regeln von Fadengeschwindigkeiten und zum Messen der Fadenlänge.Method for determining the speed and length of textile threads The invention relates to a method and a device for measuring and Regulation of thread speeds and for measuring the thread length.
Bei den gebräuchlichen Verfahren zur Geschwindigkeitsmessung von Textilfäden wird von der Drehzahl der Abzugsrollen bzw. -walzen ausgegangen, wobei die Drehzahl pro Zeiteinheit, multipliziert mit dem Umfang der Rolle, bzw. Walze die Fadengeschwindigkeit ergibt. Bei Textilmaschinen ohne Abzugsrollen wird die Umfangsgeschwindigkeit der Spulen gemessen, indem eine Rolle gegen die Spule gedrückt wird, und die Drehzahl der Rolle das Maß für die Geschwindigkeit des Fadens ist. Für eine genaue Messung darf die Rolle keinen Schlupf gegenüber der Spule haben. Ferner kann die Fadengeschwindigkeit gemessen werden, indem die Spulendrehzahl und der Spulendurchmesser gleichzeitig gemessen und entsprechend umgerechnet werden.With the usual methods for measuring the speed of textile threads is based on the speed of the take-off rollers or rollers, the speed per unit of time, multiplied by the circumference of the roll or cylinder is the thread speed results. In textile machines without take-off rollers, the peripheral speed is the Spools measured by pressing a roller against the spool and the speed the roll is the measure of the speed of the thread. For an accurate measurement the reel must not have any slippage in relation to the spool. Furthermore, the thread speed can be measured by the spool speed and the spool diameter simultaneously measured and converted accordingly.
Alle diese Verfahren sind indirekte Messungen der Geschwindigkeit. Bei dem erfindungsgemäßen Verfahren handelt es sich hingegen um eine direkt auf den Faden bezogene Messung.All of these methods are indirect measurements of speed. In contrast, the method according to the invention is a direct one measurement related to the thread.
Bei der Herstellung von Schergattern werden bekanntlich von mehreren Einzelspulen die Fäden gleichzeitig abgezogen.In the manufacture of shear lattices, it is known that several Single bobbins pulled the threads off at the same time.
Es ist erstrebenswert, daß die Einzelspulen untereinander in ihren Fadenlängen übereinstimmen, um die Fadenreste klein zu halten, die sich ergeben, wenn die Spule mit dem kürzesten Faden abgewickelt ist. Die Fadenlänge wird üblicherweise aus dem Gewicht und dem Denier-Wert des Fadens errechnet.It is desirable that the individual coils in their The thread lengths match in order to keep the thread remnants small, when the bobbin is unwound with the shortest thread. The thread length is usually calculated from the weight and denier of the thread.
Nach dem erfindungsgemäßen Verfahren läßt sich die Fadenlänge weitaus exakter bestimmen. Die Erfindung geht von der Voraussetzung aus, daß der Faden ein schlechter elektrischer Leiter ist, der impulsartig aufgebrachte elektrostatische Ladungen eine gewisse Strecke weit transportieren kann ohne daß diese Ladungen unter einen meßbaren Wert absinken Aus der Figur ist zu ersehen, daß der Faden (1) von oben kommend zunächst an einem geerdeten tallkörper (2) vorbeigleitet Er verliert dabei eventuell vorhandene elektrostatische Ladungen. Dann läuft der Faden durch zwei voneinander isolierte etallflächen (3).According to the method according to the invention, the length of the thread can be increased determine more precisely. The invention is based on the premise that the thread is a a poor electrical conductor is the impulsively applied electrostatic Can transport loads a certain distance without these loads being underneath decrease a measurable value From the figure it can be seen that the thread (1) of Coming upstairs, it first slides past a grounded tall body (2). He loses any electrostatic charges that may be present. Then the thread runs through two metal surfaces isolated from each other (3).
Zwischen diesen Flächen wird durc;h einen impulsgenerator (6) in zeitlich kurzen Abständen ein elektrisches Feld errichtet unter dessen Wirkung eine elektrostatische Ladung auf den Faden übertragen wird.A pulse generator (6) is timed between these areas At short intervals an electric field creates an electrostatic one under its effect Charge is transferred to the thread.
In eine. gewissen Abstand (S) ist ein weiteres Metallflächenpaar (4) angebracht, das ebenfalls vom Faden durchlaufen wird. Die auf dem Faden befindliche elektrostatische Ladung induziert einen Spannungsimpuls, der durch geeignete Schaltmittel (7) formiert und verstärkt wird.In a. certain distance (S) is another pair of metal surfaces (4) attached, which is also traversed by the thread. The one on the thread electrostatic charge induces a voltage pulse, which is triggered by suitable switching means (7) is formed and strengthened.
Bleibt der Abstand (S) zwischen dem Plattenpaar (3) und dem Plattenpaar (4) konstant so ist die Fadengeschwindigkeit umgekehrt proportional der Zeit, die das elektrostatisch geladene Fadenstück für die Strecke (S) braucht.This leaves the distance (S) between the pair of plates (3) and the pair of plates (4) constant so the thread speed is inversely proportional to the time it takes the electrostatically charged piece of thread needs for the distance (S).
Wird diese Laufzeit bzw. eine ihr entsprechende elektische Größe in einer geeigneten Schaltung (8) mit einem Sollwert (9) verglichen. so lassen sich aus den Differenzwerten Stellgrö#en zur Geschwindigkeitsregelung ableiten.If this running time or a corresponding electrical quantity is in a suitable circuit (8) compared with a nominal value (9). so let yourself Derive manipulated variables for speed control from the differential values.
Wird der am Plattenpaar (4) auftretende und durch die Schaltungsanordnung (7) verstärkte MelJimpuls zur Auslösung des Impulsgenerators (6) derart benutzt, daß der Generatorimpuis mit dem Me#impuls zeitlich zusammenfällt, so lä#t sich aus der Anzahl der Me#impulse die Länge des abgelaufenen Fadens mit Hilfe eines Zähler (10) direkt bestimmen. Nach Errcichen einer gewünschten Fadenlänge kann dieser Zähler (10) z.B. ein Relais (10a) betätigen, daß den Spulvorgalg unterbricht. Weiln der elektrostatisch geladene Fadenteil die Meßstrecke (S) durchlaufen hat, so sorgt ein weiterer geerdeter Metallkörper (5) für die Ableitung der nicht mehr benötigten Ladungen.Is that which occurs on the pair of plates (4) and is caused by the circuit arrangement (7) amplified MelJimpuls used to trigger the pulse generator (6) in such a way that that the generator impulse coincides in time with the measurement impulse, so it can be the number of measuring pulses the length of the thread that has run off with the aid of a counter Determine (10) directly. After reaching a desired thread length, this counter can (10) Actuate e.g. a relay (10a) that interrupts the winding feeder. Because the electrostatically charged part of the thread has passed through the measuring section (S) Another earthed metal body (5) for the discharge of the no longer required Charges.
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA0048563 | 1965-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1535086A1 true DE1535086A1 (en) | 1970-04-09 |
Family
ID=6936416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19651535086 Pending DE1535086A1 (en) | 1965-03-05 | 1965-03-05 | Method for determining the speed and length of textile threads |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1535086A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0000721A1 (en) * | 1977-07-22 | 1979-02-21 | b a r m a g Barmer Maschinenfabrik Aktiengesellschaft | Yarn winding device |
EP0639524A1 (en) * | 1993-08-17 | 1995-02-22 | W. SCHLAFHORST AG & CO. | Method for monitoring the efficiency of a winding machine for making cross-wound packages |
FR2774467A1 (en) * | 1998-02-03 | 1999-08-06 | Fil Control | Non contact sensor for measuring the length of an electrostatic charged textile fibre and measurement method. |
-
1965
- 1965-03-05 DE DE19651535086 patent/DE1535086A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0000721A1 (en) * | 1977-07-22 | 1979-02-21 | b a r m a g Barmer Maschinenfabrik Aktiengesellschaft | Yarn winding device |
EP0639524A1 (en) * | 1993-08-17 | 1995-02-22 | W. SCHLAFHORST AG & CO. | Method for monitoring the efficiency of a winding machine for making cross-wound packages |
DE4327587A1 (en) * | 1993-08-17 | 1995-02-23 | Schlafhorst & Co W | Method for determining the production output of a textile machine producing cross-wound bobbins |
FR2774467A1 (en) * | 1998-02-03 | 1999-08-06 | Fil Control | Non contact sensor for measuring the length of an electrostatic charged textile fibre and measurement method. |
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