EP0476406B1 - Dispositif pour le filage d'un fil avec torsion réelle par une broche et une cloche, et procédé de filage avec un tel dispositif - Google Patents
Dispositif pour le filage d'un fil avec torsion réelle par une broche et une cloche, et procédé de filage avec un tel dispositif Download PDFInfo
- Publication number
- EP0476406B1 EP0476406B1 EP19910114722 EP91114722A EP0476406B1 EP 0476406 B1 EP0476406 B1 EP 0476406B1 EP 19910114722 EP19910114722 EP 19910114722 EP 91114722 A EP91114722 A EP 91114722A EP 0476406 B1 EP0476406 B1 EP 0476406B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spindle
- spinning
- speed
- bell
- cap
- 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
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/06—Spinning or twisting machines in which the product is wound-up continuously cap type
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/20—Driving or stopping arrangements
- D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
- D01H1/244—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles each spindle driven by an electric motor
Definitions
- the invention relates to a device for spinning a real twisted yarn by means of a spindle and a bell according to the preamble of claim 1.
- An adjustable resistor and an adjustable coil can be switched on by means of a switching element, so that the torque characteristic of the individual motor of the bell can be changed slightly.
- the drives are provided in order to be able to spin particularly fine and less tensile threads with the bell spinning device. Furthermore, when spinning yarns with sufficient tensile strength, it is provided with this device to brake the bell when the spinning ends so that the thread tension does not drop too much.
- the device according to the invention has the great advantage that almost any point in the first quadrant of the coordinate system torque-speed can be reached. This applies to both the speed of the bell and the speed of the spindle. Almost any drive torque of these two speeds can thus be set. This possibility of almost any adjustability of the speeds, for example via the stator field in an asynchronous motor, allows the thread tension to be kept constant for a certain thread number within very narrow limits. By taking the stroke movement of the spindle into account, even the differences in thread tension caused by the different winding diameters of the cop can be largely compensated for. These advantages can be achieved with a suitable height measuring device and associated measuring transducer. Above all, those with a capacitive or inductive sensor have proven themselves as height measuring devices. However, digital sensors, for example with light-emitting diodes and photocells, can also be used.
- a bell spinning device is shown, with a spindle 1, which carries a cop 2.
- This cop 2 is surrounded by a bell 3 and is supplied in the known type of delivery rollers 4 with a thread with the delivery speed V, see for example EP-A 0 225 660.
- the spindle 1 is driven by a single motor 5, and the bell 3 with a single motor 6.
- the individual motors 5 and 6 are connected to frequency converters 7 and 8, each of which form a different frequency f 1 or f 2 due to a direct current signal transmitted by a programmable control unit 9, as a result of which the individual motors are driven at different speeds.
- Asynchronous motors in particular have proven themselves for this type of frequency control.
- a lifting mechanism 10 is connected to the single motor of the spindle, which ensures the stroke required for spinning.
- the respective height of the lifting mechanism 10 is measured with a height measuring device 11.
- This measuring device 11 is symbolically represented by a measuring staff 12 and a measuring transducer 13.
- inductive or capacitive displacement measurement has proven itself, as is known, for example, from the book “Dubbel - Taschenbuch für Maschinenbau", 16th edition, page V24.
- incremental encoders can be used, for example are based on light emitting diodes and photocells.
- the slip constant C depends on the TYPE of the individual motor 6 and is in the range from 1.005 to 1.025.
- the slip constant C depends on the TYPE of the individual motor 6 and is in the range from 1.005 to 1.025.
- the asynchromotor type EV 40-20 from KaVo Elektrotechnisches Werk GmbH D-7970 Leutkirch in the Allgäu with a maximum output of 100 watts, it is approximately 1.01. The smaller fluctuations can be compensated for using the prescribed height measuring device.
- the characteristic curves of the single motor shown in FIG. 2 for the bell m 1, m 2 and m 3 can be set via the parameter K, ie via the frequencies f 1 and f 2.
- the effective speed n G of the bell is given by the formula determined and is by the factor C caused by the slip lower than the speed n G 'of the stator field.
- the slip for the spindle is at most about 1 to 2% and is therefore of minor importance for the considerations made, ie n S ⁇ n S '.
- the delivery speed V depends on the thread number in tex and on the spindle speed n S.
- the load characteristics 1 1, 1 2 or 1 3 then result for a specific thread tension.
- the speed of the bell is the same for the torque characteristics and the load characteristics shown.
- the thread tension of the yarn formed can be set as desired for each yarn number.
- the DC voltage signals delivered to the frequency converters 7 and 8 are now predetermined by the programmed control unit according to a specific program.
- the lifting mechanism 10 is generally provided as a spindle bench in the type known in ring spinning machines. Using the above-described height measurement, the respective wind-up diameter d of the cop 2 can be determined, and the programmable control unit 9 can be used to largely compensate for the remaining periodic changes in the thread tension, which are caused by the lifting movement. However, the lifting mechanism 10 can also be assigned to the bells 3 of the spinning machine, the spindle 1 then remaining stationary with the spinning machine.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Claims (5)
- Dispositif servant à filer un fil à torsion réelle, à l'aide d'une broche (1) et d'une cloche (3) qui sont entraînées chacune par un moteur individuel (5, 6) et peuvent être modulées dans leur vitesse de rotation par un convertisseur tension-fréquence,
caractérisé par le fait
qu'un convertisseur de fréquence (7, 8) est adjoint à chaque moteur individuel (5) de broche et à chaque moteur individuel (6) de cloche, et les deux convertisseurs de fréquence (7, 8) sont reliés avec une unité d'asservissement (9) commune et programmable, de sorte que, pour le réglage de la tension désirée de fil, le nombre de tours de la broche (1) et le nombre de tours de la cloche (3) sont réglables indépendamment l'un de l'autre, et dans une fonction quelconque du temps. - Dispositif selon revendication 1,
caractérisé par le fait que
les moteurs individuels sont des moteurs asynchrones, et la constante de glissement C se situe entre 1,005 et 1,025, et est de préférence autour de 1,01. - Dispositif selon revendication 1 ou 2,
caractérisé par le fait
qu'un appareil de mesure de hauteur (11) est adjoint à la broche (1), qui enregistre le mouvement de course de la broche (1), et livre un signal a l'unité d'asservissement commune (9) via un convertisseur de mesure (13), par quoi la vitesse de rotation du moteur individuel (5) peut être dirigée en fonction de la course du mécanisme de course (10). - Dispositif selon revendication 3,
caractérisé par le fait que
l'appareil de mesure de hauteur (11) est pourvu d'un transmetteur de mesures inductif ou capacitif. - Dispositif selon revendication 3,
caractérisé par le fait que
l'appareil de mesure de hauteur (11) est pourvu d'un transmetteur de mesures incrémentiel.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH302190A CH681988A5 (fr) | 1990-09-18 | 1990-09-18 | |
CH3021/90 | 1990-09-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0476406A1 EP0476406A1 (fr) | 1992-03-25 |
EP0476406B1 true EP0476406B1 (fr) | 1995-01-04 |
Family
ID=4246856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910114722 Expired - Lifetime EP0476406B1 (fr) | 1990-09-18 | 1991-09-02 | Dispositif pour le filage d'un fil avec torsion réelle par une broche et une cloche, et procédé de filage avec un tel dispositif |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0476406B1 (fr) |
JP (1) | JPH04245930A (fr) |
CH (1) | CH681988A5 (fr) |
DE (1) | DE59104135D1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ278771B6 (en) * | 1991-01-24 | 1994-06-15 | Vyzk Ustav Bavlnarsky A S | Apparatus for continuous spinning of textile yarns |
WO1999031307A1 (fr) * | 1997-12-15 | 1999-06-24 | Temco Textilmaschinenkomponenten Gmbh | Element de machine textiles a moteur individuel avec convertisseur |
DE102005035259A1 (de) * | 2004-07-29 | 2006-03-23 | Maschinenfabrik Rieter Ag | Verfahren zum Betrieb einer Textilmaschine für das Erzeugen und/oder Veredeln, sowie Aufspulen eines Fadens und Textilmaschine |
CH697668B1 (de) * | 2004-09-23 | 2009-01-15 | Rieter Ag Maschf | Spindel mit Abschirmelement. |
DE102005057013A1 (de) * | 2005-11-30 | 2007-05-31 | Maschinenfabrik Rieter Ag | Textilmaschine und Verfahren zum Betreiben derselben |
DE102008022672A1 (de) | 2008-05-07 | 2009-11-12 | Maschinenfabrik Rieter Ag | Spinnmaschine mit einer Steuerung der Fadenspannung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE627345A (fr) * | 1962-01-25 | |||
DE3741430A1 (de) * | 1987-12-08 | 1989-06-22 | Zinser Textilmaschinen Gmbh | Spinnvorrichtung |
-
1990
- 1990-09-18 CH CH302190A patent/CH681988A5/de not_active IP Right Cessation
-
1991
- 1991-09-02 DE DE59104135T patent/DE59104135D1/de not_active Expired - Fee Related
- 1991-09-02 EP EP19910114722 patent/EP0476406B1/fr not_active Expired - Lifetime
- 1991-09-12 JP JP23345291A patent/JPH04245930A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CH681988A5 (fr) | 1993-06-30 |
JPH04245930A (ja) | 1992-09-02 |
EP0476406A1 (fr) | 1992-03-25 |
DE59104135D1 (de) | 1995-02-16 |
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