EP1220959A2 - Procede d'utilisation d'un ourdissoir conique et ourdissoir conique - Google Patents

Procede d'utilisation d'un ourdissoir conique et ourdissoir conique

Info

Publication number
EP1220959A2
EP1220959A2 EP00963847A EP00963847A EP1220959A2 EP 1220959 A2 EP1220959 A2 EP 1220959A2 EP 00963847 A EP00963847 A EP 00963847A EP 00963847 A EP00963847 A EP 00963847A EP 1220959 A2 EP1220959 A2 EP 1220959A2
Authority
EP
European Patent Office
Prior art keywords
warping
winding
drum
roller
warping drum
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.)
Granted
Application number
EP00963847A
Other languages
German (de)
English (en)
Other versions
EP1220959B1 (fr
Inventor
Manfred Bollen
Horst Ulbrich
Hans-Peter Zeller
Stefan Häne
Riccardo Marchi
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.)
Karl Mayer Textilmaschinen AG
Original Assignee
Benninger AG Maschinenfabrik
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 Benninger AG Maschinenfabrik filed Critical Benninger AG Maschinenfabrik
Publication of EP1220959A2 publication Critical patent/EP1220959A2/fr
Application granted granted Critical
Publication of EP1220959B1 publication Critical patent/EP1220959B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 operating a cone warping machine according to the preamble of claim 1.
  • a group of threads is drawn off from a creel in a predetermined warp thread repeat and wound up as a warping belt or section onto the warping drum with a constant pitch tension.
  • the warping drum has a cylindrical section and a truncated cone-shaped section, with each warp band winding being wound in the inclination of the truncated cone angle for reasons of stability.
  • the warping belt is guided over a rotating guide roller, which is arranged on a warping carriage. This carriage performs a movement axially and radially to the longitudinal axis of the warping drum during the winding process.
  • a generic cone warping machine and a warping process are described for example in CH A 679 935.
  • the winding diameter increase must be determined and accordingly, the warping carriage feed can be specified axially and radially.
  • the use of precision probes requires the warping process and thus the production to be stopped with every measuring process.
  • a press roller touching the winding as a measuring device leads to considerable borrow measurement errors.
  • Such measurement errors can also occur when using laser measuring devices, for example because the hairiness of a yarn suggests an incorrect yarn size or because the color of the yarn or the optical environment of the operating site influence the measurement result. Since the laser device is mounted on the warping slide, the optical measurement errors mentioned accumulate with those that are caused by the warping slide movement or by unavoidable manufacturing tolerances.
  • the effective diameter of the winding after each warping drum revolution can be continuously determined with maximum precision and without interrupting the winding process. Since the winding diameter increase at all times depends on the ratio of the revolutions of the deflection roller and the warping drum is known, the axial feed of the warping carriage can be controlled in such a way that the winding follows the cone angle exactly regardless of any changes in diameter.
  • the ratio of the revolutions of the warping drum and the deflection roller is determined in a particularly simple manner with a programmable computer using a first measuring sensor assigned to the warping drum and with a second measuring sensor assigned to the deflection roller.
  • a correction factor for the length measurement values is determined from the ratio of the known basic circumference of the warping drum and the winding length measured via the deflecting roller.
  • the computer serves as a comparison device and as a memory for the winding lengths and the calculated winding diameter.
  • the leveling roller leads to a more even winding build-up, with different disturbance variables such as different thread volumes, changes in air humidity and so on can be compensated.
  • the winding structure in this start phase can run differently.
  • the starting position (effective distance) of the leveling roller is calculated in advance from the compression behavior of the previous windings (behavior of the winding structure) by means of a correlation.
  • the behavior of the winding diameter increase (winding structure) can be recorded again after the leveling roller has been switched on in order to correlate a new value for the skiving carriage feed and the effective distance of the leveling roller.
  • the rotation-related data of the winding diameters are stored for the first warping belt wound on the warping drum and if the rotation-related winding diameters of the subsequent belts are transferred to those of the first warping belt based on the stored data, possibly by changing the effective distance of the leveling roller, especially with larger material-specific volume changes can be adjusted. This means that the winding diameter can be kept constant across the entire warping width will hold without changing the warp tension.
  • the warping carriage feed which was recorded for the first warping belt, is copied for the following warping belts.
  • the invention also relates to a cone warping machine which operates according to the method according to the invention and which is characterized by the features in claim 13. Further constructive configurations result from claims 14 to 16.
  • FIG. 1 shows a schematic side view of a warping machine radially to the longitudinal axis of the warping drum
  • FIG. 2 shows a schematic side view of the warping machine according to FIG. 1 axially to the longitudinal axis of the warping drum
  • FIG. 3 shows a partial longitudinal section through a deflection roller
  • FIG. 4 shows a simplified block diagram for the control
  • 5a are schematic representations of the winding behavior in the case of up to 5c consecutive warping drum revolutions in the case of non-compressible and compressible material
  • Figure 6 is a diagram with the winding diameter increase in
  • the cone warping machine has a warping drum 3 with a cylindrical section 31 and a frustoconical section 30 designed as a shoulder, which adjoins the cylindrical section at its smallest diameter.
  • the warping drum is rotated by an electric motor 32, which is only symbolically shown in FIG. 4, at a predetermined winding speed about the longitudinal axis a-a.
  • a warping band M consisting of several threads is wound onto the warping drum as a warp wrap, w, x, y, and z, the winding being deposited at the cone angle of the frustoconical section.
  • the individual threads of a warping belt are drawn off from a single thread spool by a schematically illustrated creel C, the threads being applied with a braking force by means of thread brakes FF.
  • the warping belt is guided over a deflection roller 1, which is freely rotatable.
  • the deflection roller is thus set in rotation by the warping belt as a result of the wrap friction, the speed of rotation obviously being dependent on the winding speed, which is usually kept constant over the entire warping chain.
  • the surface of the deflection roller is made of hard anodized, high-strength aluminum, for example.
  • the deflection roller 1 is mounted on a warping carriage 11 and can be rotated about a longitudinal axis b-b, which extends axially to the longitudinal axis a-a of the warping drum.
  • the warping carriage in turn can be moved axially and radially to the longitudinal axis a-a.
  • the axial displacement takes place with a longitudinal motor 12 via a threaded spindle 120 and a spindle nut 121.
  • the radial displacement takes place via a transverse motor 13 and a threaded spindle 130.
  • the warping drum 3 is provided with a first transducer 4, which is capable of delivering at least one pulse with each revolution of the warping drum.
  • the deflection roller 1 is connected to a second sensor 2, which can also generate rotation-dependent pulses, for example a predetermined number of pulses of 20,000 for each full rotation of the deflection roller.
  • the first and second transducers, as well as the drive motor 32 for the warping drum already mentioned, are operatively connected to a programmable computer UE (FIG. 4).
  • a programmable computer UE FIG. 4
  • Figure 2 is a leveling roller below the deflection roller 1
  • the leveling roller 14 arranged, which can be pressed against the warping drum 3 or against the winding being built up.
  • the leveling roller 14 is acted upon by a pressing device 15, the effective distance of the leveling roller exerting a corresponding pressing force on the warping roll.
  • the effective distance of the leveling roller 14 can be controlled by various means. For example, it can be a pressure medium cylinder or an electromagnetic linear drive. Since the leveling roller 14 must also carry out the axial displacement of the winding structure, it is assigned to the warping carriage 11.
  • FIG. 3 shows further design details of the deflection roller 1. This is mounted on a shaft 10, which is mounted in end bearings 5,5 '. These are preferably roller bearings.
  • the final bearing 5 acts on at least one force sensor 6, by means of which the warping band tension acting on the deflection roller 1 can be determined.
  • the force sensor 6 is also connected to the programmable computer UE, where the ascertained actual tension value of the strip tension is comparable to a predetermined tension setpoint of the strip tension. If the actual value deviates from the target value, the electromechanical thread brakes FF are actuated, that is, each time either debited or debited according to the sign of the deviation.
  • a magnetic brake 7 or similar means which can be controlled via the programmable computer UE and which is activated, for example, in the event of a sudden deceleration of the winding speed on the warping drum 3 or at a stop.
  • the second encoder 2 is fixedly arranged on the warping carriage 11 and is preferably connected to the shaft 10 via a coupling 8. However, it would also be conceivable for the encoder 2 to be operatively connected to the shaft 10, for example via an optical incremental encoder or the like.
  • FIG. 1 shows the geometric relationships of a warping belt to the warping drum.
  • the frustoconical section 30 has a shoulder height A and a length B with respect to the cylindrical section 31.
  • the two masses determine the cone ratio or the cone angle ⁇ .
  • the individual windings w, x, y, and z are placed one after the other at the same angle on the warping drum 3.
  • the layer thickness U of an individual warping belt M determines which Dimension S must be offset relative to the underlying layer in order to maintain the cone angle ⁇ .
  • the cone mass A to B behave like the winding layer mass U to S.
  • the second measuring sensor 2 determines the number of pulses which are emitted in the interval between two successive pulses of the first measuring sensor 4.
  • a correction factor df for the length measurement values is determined from the ratio of the known basic circumference of the warping drum and the winding length measured via the deflection roller.
  • the formula is: 25 • d kor • Pi, where d kor represents the corrected diameter of the deflection roller.
  • Slip errors in the acceleration and deceleration phase are calculated in accordance with EP-B-609 172 and evaluated accordingly, and calculation of the winding length and the winding diameter increase taken into account.
  • the layer thickness U of the warping roll shown in FIG. 1 obviously corresponds to half the difference between the inside diameter and the outside diameter of a layer. Since the lengths of the successive layers are known from the above-mentioned calculation, the diameter difference can be deduced from the length difference between two layers by division by the number Pi.
  • the above-mentioned calculations are carried out continuously in the area of the computer UE.
  • each winding wound on the warping drum has a conical shape in its entirety Side surface whose angle inclination corresponds exactly to the cone angle ⁇ .
  • the warping carriage 11 is retracted radially to the longitudinal axis a-a by a measure that corresponds to the layer thickness U each time the warping drum rotates.
  • FIGS. 5a to 5c and FIG. 6 show that the winding diameter increase occurs at least in the starting phase does not behave linearly. This depends on the yarn quality or the compressibility of the material.
  • FIG. 5a shows a first warping tape roll W, which lies against the cone section 30 of the warping drum. A total of five hypothetical layers S1 to S5 made of non-compressible material are shown with the reference symbol 18. The winding diameter increase would behave linearly according to curve 16 in FIG. B if the material were steel wire.
  • the hatched material with the reference symbol 19 according to FIG. 5b symbolizes a compressible textile material. Three layers of this material are shown in this figure. It can be seen that the real diameter Dr in the third layer S3 is already smaller than the hypothetical diameter Dh. The layers of yarn are pressed into one another, the behavior evidently changing with increasing distance from the hard cylindrical section 31.
  • the difference between Dh and Dr in the fifth layer S5 almost corresponds to an entire layer thickness.
  • Warping drum revolutions the hypothetical winding diameter with incompressible material would be 1006 mm, while in real 1004.5 mm.
  • the measurements, for example, after the first three warp drum revolutions allow a prediction of the curve by correlation and thus a predetermination after how many warp drum revolutions the winding diameter increase will behave approximately linearly. This means that the skiving carriage feed can be determined in advance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Warping, Beaming, Or Leasing (AREA)
  • Gas Separation By Absorption (AREA)
  • Water Treatment By Sorption (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Forging (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
  • Cable Accessories (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

Selon l'invention, un cantre (C) enroule des fils en tant que section d'ourdissage (M) sur un tambour d'ourdissage (3) au moyen d'un cylindre déflecteur (1) avec une tension d'enroulement constante. L'augmentation du diamètre d'enroulement est de préférence déterminée à partir du rapport entre la rotation du cylindre déflecteur et du tambour d'ourdissage. En fonction des valeurs mesurées de l'augmentation du diamètre d'enroulement, l'avancement du chariot d'ourdissage est déterminé après le premier tour du tambour d'ourdissage selon le rapport conique, c.-à-d. commandé ou régulé de manière continue. Les valeurs de mesure correspondantes sont inscrites et stockées dans un tableau. Ainsi, il est possible de travailler sans entrée de données concernant l'avancement. Pour la compensation de propriétés spécifiques aux matériaux, ont peut employer ou non un cylindre d'égalisation.
EP00963847A 1999-10-13 2000-10-09 Procede d'utilisation d'un ourdissoir conique et ourdissoir conique Expired - Lifetime EP1220959B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITFI990206 1999-10-13
IT1999FI000206A IT1307802B1 (it) 1999-10-13 1999-10-13 Metodo ed apparecchiatura per la formazione dell'ordito su orditoisezionali.
PCT/CH2000/000548 WO2001027367A2 (fr) 1999-10-13 2000-10-09 Procede d'utilisation d'un ourdissoir conique et ourdissoir conique

Publications (2)

Publication Number Publication Date
EP1220959A2 true EP1220959A2 (fr) 2002-07-10
EP1220959B1 EP1220959B1 (fr) 2009-01-07

Family

ID=11353084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00963847A Expired - Lifetime EP1220959B1 (fr) 1999-10-13 2000-10-09 Procede d'utilisation d'un ourdissoir conique et ourdissoir conique

Country Status (6)

Country Link
EP (1) EP1220959B1 (fr)
AT (1) ATE420229T1 (fr)
DE (1) DE50015520D1 (fr)
ES (1) ES2319612T3 (fr)
IT (1) IT1307802B1 (fr)
WO (1) WO2001027367A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033524A1 (de) * 2005-06-22 2006-12-28 H.K.O. Isolier- Und Textiltechnik Gmbh Bandscheranlage und Verfahren zur Kettbaumherstellung
EP2169098A1 (fr) 2008-09-25 2010-03-31 Benninger AG Procédé destiné au fonctionnement d'une machine de coupe conique et machine de coupe conique
EP3178978A1 (fr) * 2015-12-09 2017-06-14 Karl Mayer Textilmaschinenfabrik GmbH Ourdissoirs et procédé de production d'une chaîne

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301196A1 (de) * 1983-01-15 1984-07-26 W. Schlafhorst & Co, 4050 Mönchengladbach Konusschaermaschine
DE3301195A1 (de) * 1983-01-15 1984-07-26 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum schaeren eines schaerbandes auf einer konusschaermaschine
CH669409A5 (fr) * 1986-02-27 1989-03-15 Benninger Ag Maschf
CH675598A5 (fr) * 1986-04-02 1990-10-15 Benninger Ag Maschf
CH679935A5 (fr) * 1989-10-09 1992-05-15 Benninger Ag Maschf

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0127367A3 *

Also Published As

Publication number Publication date
WO2001027367A3 (fr) 2001-10-18
ATE420229T1 (de) 2009-01-15
DE50015520D1 (de) 2009-02-26
ES2319612T3 (es) 2009-05-11
EP1220959B1 (fr) 2009-01-07
WO2001027367A2 (fr) 2001-04-19
IT1307802B1 (it) 2001-11-19
ITFI990206A1 (it) 2001-04-13
ITFI990206A0 (it) 1999-10-13

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