EP0519991B1 - Verfahren zum schären von fäden sowie schärmaschine - Google Patents

Verfahren zum schären von fäden sowie schärmaschine Download PDF

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Publication number
EP0519991B1
EP0519991B1 EP91906190A EP91906190A EP0519991B1 EP 0519991 B1 EP0519991 B1 EP 0519991B1 EP 91906190 A EP91906190 A EP 91906190A EP 91906190 A EP91906190 A EP 91906190A EP 0519991 B1 EP0519991 B1 EP 0519991B1
Authority
EP
European Patent Office
Prior art keywords
warping
thickness
measuring
warping drum
signal
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
Application number
EP91906190A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0519991A1 (de
Inventor
Josef Lenzen
Herbert Wisniewski
Wilhelm Thier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hollingsworth GmbH
Hergeth Hollingsworth GmbH
Original Assignee
Hollingsworth GmbH
Hergeth Hollingsworth GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hollingsworth GmbH, Hergeth Hollingsworth GmbH filed Critical Hollingsworth GmbH
Publication of EP0519991A1 publication Critical patent/EP0519991A1/de
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • D02H13/12—Variable-speed driving mechanisms
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H3/00—Warping machines
    • D02H3/02—Sectional warpers

Definitions

  • the invention relates to a method for warping according to the preamble of claim 1 and a cone warping machine according to the preamble of claim 8.
  • the method for warping threads on a warping drum of a cone warping machine is known from DE-OS 37 02 293.
  • a warping mechanism is shifted depending on the increasing winding thickness relative to the warping drum, by scanning the winding circumference by a sensing element when the warping drum is at a standstill while the first band is being warmed with a given warping slide feed, and thereby adjusting its path during a measuring winding phase depending on the number of Revolutions of the warping drum is measured.
  • the advance of the warping carriage when the rest of the subsequent belts are warmed is corrected in accordance with the measured adjustment path.
  • a basic winding is warmed with a predetermined warping slide feed and the winding circumference is scanned by the feeler, the adjustment path of which is measured as a function of the number of revolutions.
  • the feeler element is then adjusted in accordance with the adjustment path measured when the base winding is warmed and a corrected feed provided for the rest of the first band is determined from the difference between the measured adjustment path in the measurement winding and the measured adjustment path in the base winding.
  • All other warping belts are warmed like the first belt with regard to the base and measuring roll with the specified feed and the remaining roll with the corrected warping carriage feed.
  • the disadvantage of the known method is that a stepped winding is created due to the three-part structure of the first warping belt.
  • a further disadvantage is that although the corrected feed value is already known, the subsequent windings must be wound in the same way, that is to say with the base and measuring windings with the initially specified warping carriage feed, in order to ensure that all subsequent warping belts have the same structure.
  • a laser light distance measurement is known in principle from DE-ZS der elektroniker (3/1989, pp.32-34 and 7/1987, pp.78.-83).
  • the invention has for its object to provide a method and an apparatus for warping threads on a warping drum, in which or in which a step winding structure is avoided and in which subsequent warp belts can be wound with the corrected warping feed once determined.
  • the application thickness measuring device without a winding support is calibrated in a specific rotational position of the warping drum by measuring the position of the warping drum without a winding support and then rotating the warping drum by exactly one revolution with a predetermined feed for the warping belt.
  • the specific rotary position of the warping drum must therefore be set in order to achieve greater accuracy when measuring the application thickness of the warping roll, in which deviations in the diameter of the warping drum are compensated for.
  • a corrected preliminary feed signal can be generated in the second step with high accuracy and reproducibility when measuring the thickness of the first winding layer, so that practically from the first layer already is sharpened at a feed rate very close to the final feed.
  • the first layer is compressed with a first relatively high surface pressure before measuring the application thickness.
  • the third step a few winding layers are prepared with the corrected feed, which are measured with regard to their application thickness when the warping drum is stopped again. A lower surface pressure is applied in the measuring area compared to the second step. The rotary position of the warping drum is the same as the first and second step, so that machine-related errors are compensated.
  • a corrected final feed signal is then generated from the resulting order thickness per number of revolutions, which is used as a basis for all subsequent winding processes.
  • the third step a maximum of five layers are prepared. In this way it is ensured that only an extremely small number of layers are sharpened with the provisionally corrected feed signal. Since the difference between the temporarily corrected feed signal and the finally corrected feed signal is small, the influence on the winding structure is negligible.
  • the surface pressure value for the third step is set depending on the number of winding layers, the material properties of the threads and / or the creel thread tension.
  • the number of winding layers results from the revolution count signal.
  • the creel thread tension can be adjusted accordingly Sensors are measured and passed on to the controller.
  • the material properties of the threads it is possible to enter them in the form of factors in a computer of the control or to enter factors in advance in the computer depending on the yarn count and quality, so that only the material parameters have to be entered.
  • the exposed threads can be compressed in the measuring range of the application thickness measurement in the entire bandwidth of the warping belt. In this way, there is a good mean value for the application thickness of the warping belt.
  • the application thickness measurement is preferably carried out indirectly as a laser light distance measurement.
  • the laser light is directed onto the back of a plate which generates the surface pressure.
  • Such an application thickness measurement can be carried out with a resolution of 1/1000 mm.
  • the plate can be pressed against the warping drum in the first step (measurement without changing table) with the same force as in the second step (measurement of the first layer). In this way, possible deformations of the plate due to the contact pressure can be compensated and a higher accuracy can be achieved when measuring the thickness of the coating.
  • the cone warping machine 1 has a warping drum 2 with a cylindrical part 3 and a cone part 4.
  • the warping drum 2 is supported in bearings 6 by a base frame 7.
  • the base frame 7 is designed as a carriage and can be moved back and forth on rails 9 by means of the running wheels 8.
  • a motor 11 with a rotary pulse generator drives the shaft 5 and thus the warping drum 2 by means of a transmission element 12 and a belt wheel 13, a brake 14 being provided for a brake disk 15. With 16 the traction motor is designated.
  • Another motor 17 drives a threaded spindle 18, from which a support 20 can be pushed back and forth along the warping drum 2 by means of a spindle nut.
  • the support 20 has a slide 21 which can be pushed back and forth on guides along the warping drum 2 by means of the spindle 18.
  • Another carriage is attached to the carriage 21 in a height-adjustable manner.
  • the further carriage carries the drive mechanism for the movement of a sliding rivet 25 transversely to the warping drum 2 and for the height adjustment of the further carriage with the other parts attached to it.
  • the sliding rivet 25 sits on a spindle which is driven by its own motor.
  • Fig. 2 shows the winding construction of the first warping band in a cone part 4 with a cone angle ⁇ to the drum axis of 15 °.
  • FIGS. 3a to 3c explain the method steps for automatically determining the feed rate applicable for the special application with the aid of an application thickness measuring device 35, essentially consisting of a pressing device 19 and a laser light distance measuring device 22.
  • the pressing device 19 for example a stamp plate
  • the laser light distance measuring device 22 is activated and this position of the contact pressure device 19 is calibrated in the form of a base value for the application thickness.
  • the laser beam 26 of the laser light distance measuring device 22 is directed towards the rear of the pressing device 19, the surface of which is parallel runs to the drum axis of the warping drum 2.
  • the distance measurement value is reduced by the constant thickness or thickness of the stamp plate. Since all measured values are reduced by the same amount, the deviation is automatically compensated.
  • the pressing device 19 consisting of the stamp plate is pressed orthogonally to the axis of the warping drum 2 against the outer surface of the cylindrical part 3 of the warping drum 2.
  • the pressing device 19 is pressed on with a defined pressing pressure and the laser light distance measuring device 22 is activated at the same time.
  • the warping drum 2 is in a certain rotational position, which is set again exactly reproducibly for each measurement.
  • the laser light distance measuring device 22 is calibrated during this first measurement, so that a difference value for the application thickness of the winding layers can be measured in the subsequent measurements.
  • the warping drum 2 is brought back exactly one revolution at a predetermined feed rate for the warping reed 25 into the same rotational position in which a second measurement according to FIG. 3b takes place.
  • the pressing device 19 is pressed against the first winding layer with a pressing pressure, which is set to a predetermined value taking into account the material properties, the warping bandwidth, the fineness of the threads, etc.
  • this contact pressure for the first measurement to calibrate the laser light distance measuring device 22.
  • the computer of the controller 23 can calculate a first preliminary feed from the formula s v h / tan ⁇ , where s v is the feed in mm / drum revolution, h is the application height per drum revolution in mm and ⁇ is the cone angle to the warping drum axis.
  • This first preliminary feed value already represents a very good approximation of the final feed value to be determined, so that the warping takes place practically from the first winding position with the required feed value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Superconductive Dynamoelectric Machines (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP91906190A 1990-03-11 1991-03-07 Verfahren zum schären von fäden sowie schärmaschine Expired - Lifetime EP0519991B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4007620A DE4007620A1 (de) 1990-03-11 1990-03-11 Verfahren zum schaeren von faeden sowie schaermaschine
DE4007620 1990-03-11
PCT/EP1991/000431 WO1991014030A1 (de) 1990-03-11 1991-03-07 Verfahren zum schären von fäden sowie schärmaschine

Publications (2)

Publication Number Publication Date
EP0519991A1 EP0519991A1 (de) 1992-12-30
EP0519991B1 true EP0519991B1 (de) 1994-06-29

Family

ID=6401874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91906190A Expired - Lifetime EP0519991B1 (de) 1990-03-11 1991-03-07 Verfahren zum schären von fäden sowie schärmaschine

Country Status (4)

Country Link
EP (1) EP0519991B1 (enrdf_load_stackoverflow)
JP (1) JP2652814B2 (enrdf_load_stackoverflow)
DE (1) DE4007620A1 (enrdf_load_stackoverflow)
WO (1) WO1991014030A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314393A1 (de) * 1993-04-30 1994-11-03 Hollingsworth Gmbh Verfahren zum Schären von Fäden sowie Schärmaschine
ES2395870T3 (es) * 2010-09-10 2013-02-15 Karl Mayer Textilmaschinenfabrik Gmbh Máquina urdidora cónica y procedimiento para el funcionamiento de una máquina urdidora cónica

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2510517C3 (de) * 1975-03-11 1979-06-13 Hacoba Textilmaschinen Gmbh & Co Kg, 5600 Wuppertal Verfahren und Vorrichtung zum Schären von Fäden
DE2631573C3 (de) * 1976-07-14 1986-07-10 Hacoba Textilmaschinen Gmbh & Co Kg, 5600 Wuppertal Verfahren und Vorrichtung zum Schären von Fäden
DE2642293C2 (de) * 1976-09-21 1986-07-17 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Steuern des Vorschubs des Schärblattsupports einer Konus-Schärmaschine
CH661061A5 (de) * 1983-10-06 1987-06-30 Benninger Ag Maschf Verfahren zum steuern des schaerschlittens einer schaermaschine und schaermaschine.
CH669409A5 (enrdf_load_stackoverflow) * 1986-02-27 1989-03-15 Benninger Ag Maschf
DE3734095C1 (en) * 1987-10-08 1989-01-05 Herbst Protechna Gmbh Method and device for contactless monitoring of a warp (weaver's) loom (beam)

Also Published As

Publication number Publication date
EP0519991A1 (de) 1992-12-30
WO1991014030A1 (de) 1991-09-19
DE4007620C2 (enrdf_load_stackoverflow) 1991-12-05
JPH05507968A (ja) 1993-11-11
DE4007620A1 (de) 1991-09-12
JP2652814B2 (ja) 1997-09-10

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