EP2169098A1 - Procédé destiné au fonctionnement d'une machine de coupe conique et machine de coupe conique - Google Patents

Procédé destiné au fonctionnement d'une machine de coupe conique et machine de coupe conique Download PDF

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Publication number
EP2169098A1
EP2169098A1 EP08105430A EP08105430A EP2169098A1 EP 2169098 A1 EP2169098 A1 EP 2169098A1 EP 08105430 A EP08105430 A EP 08105430A EP 08105430 A EP08105430 A EP 08105430A EP 2169098 A1 EP2169098 A1 EP 2169098A1
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EP
European Patent Office
Prior art keywords
warping
outer contour
warp
measuring device
winding
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.)
Ceased
Application number
EP08105430A
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German (de)
English (en)
Inventor
Erfindernennung liegt noch nicht vor Die
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.)
Benninger AG Maschinenfabrik
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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.)
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Publication date
Application filed by Benninger AG Maschinenfabrik filed Critical Benninger AG Maschinenfabrik
Priority to EP08105430A priority Critical patent/EP2169098A1/fr
Publication of EP2169098A1 publication Critical patent/EP2169098A1/fr
Ceased legal-status Critical Current

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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  • a group of threads is withdrawn from a creel in a predetermined Kettfadenrapport and wound as a warp or as Schwarzrbandsetation on the warping drum.
  • Each Shurbandsetation is wound for reasons of stability in the inclination of the truncated cone angle on the cone part, including the most accurate control of Shurschlittenvorschubs is required.
  • this carriage moves axially and, as the winding thickness increases, also radially to the longitudinal axis of the warping drum.
  • the basic principle of the KonusJrvons the expert has been known for many decades.
  • a disadvantage of the known method is, in particular, that the winding behavior of the warp strip is taken into account only insufficient.
  • the WO 01/27367 Although a method for operating a cone warping machine has already become known in which the settling behavior dependent on the compressibility of the material is taken into account. For this purpose, the winding diameter increase is calculated on the warping drum. Deviations within a warping bandwidth can not be taken into account.
  • the outer contour of a Schrbandwickels is a reliable indication of a particular winding behavior of a warp band and the quality of the resulting overall winding.
  • the control signal for influencing the Schwarzetunschubs is derived from the determined via the measuring device outer contour of a Schwarzrbandwickels relative to the longitudinal direction of the warping drum axis.
  • the determination of such a measured variable has the advantage over an application thickness measurement that not only at a specific point of the coil is a measurement taken, but to a certain extent the overall condition of the coil is determined as a function of its outer contour.
  • the outer contour can change significantly with constant tension.
  • an actual value is formed from the determined outer contour, which is compared in a comparison device with an empirically determined and dependent on specific Scharbandparametern desired value and when the control signal from the difference between the actual value and target value is formed.
  • a comparison device determines how much the determined actual value deviates from the desired value and corrects the sharpening carriage feed accordingly.
  • the values determined in each case are used to correct the setpoint values stored in the comparison device, so that a self-learning effect occurs as the operating time increases.
  • the correction takes place in that the winding is measured at the end of a section and that the operator decides whether the determined value is within a tolerance limit. If this is not true, the corresponding measured values are stored as correction values, so that the already stored desired values for different yarn qualities are permanently refined.
  • an angle relative to the warping drum surface is interpolated from the determined outer contour and if the control signal is formed as a function of this angle.
  • This can also be a coefficient that is suitable for a certain angle stands.
  • more complex parameters would be conceivable, such as a value that stands for a specific curvature of the outer contour.
  • the outer contour can also be determined only over a section of the entire Härbandbreite. In practice, the greatest deviations from a theoretical parallel to the warping drum surface on the warp wrap on the side of the conical part are determined. It is therefore sufficient to capture only this section by the measurement.
  • the Abscannterrorism must also not necessarily take place parallel to the warping drum axis. It would be conceivable in certain cases, a helical motion. It could also be measured or scanned at different locations on the circumference of the wrap.
  • the determination of the outer contour can take place permanently during the entire winding process of a warp band section.
  • the thus permanently generated control signals can also be part of a control loop with which the sharpening feed is permanently corrected in the direction of the ideal value.
  • the determination of the outer contour can also be done intermittently with standing warping drum in predetermined steps. This has the advantage that precise measurements on the standing warping drum are possible in a simpler manner. The number of measuring steps can vary depending on the yarn quality.
  • the measuring steps to be carried out can be carried out depending on the warp length and / or the processed material. Depending on the given circumstances, ten or more measurement steps may be necessary to optimize the winding structure. Basically, it is also possible that the maximum bandwidth is limited to the top so that no corrupted correction values are measured.
  • the determination of the outer contour is advantageously carried out without contact, for example by means of optical sensors, such. Laser sensors or CCD cameras.
  • the determination of the outer contour is carried out by scanning the winding surface with a laser sensor. In this case, very precise values for the formation of the control signal can be achieved.
  • the determination of the outer contour but also with a tactile sensor would be possible.
  • Corresponding precision measuring probes are known to the person skilled in the art.
  • the measured values can be further optimized if the measuring device on the warping drum or on the conical section of the warping drum is calibrated before the start of the warping process. This ensures that the measuring device always works exactly on a certain measuring plane, whereby the exact coordinates of the warping drum or the transition from the cylindrical to the conical part are known.
  • the feed values for the sharpening sled are stored and if the learning phase is copied for all further warp band sections.
  • the learning phase is copied for all further warp band sections.
  • a total winding contour is determined by means of a plurality of warp tape wraps, wherein at least a first point on the cone part, a second point on the vertex of the overall winding and a third point is measured at the end of the overall contour and when a control signal for controlling the subsequent total windings is derived from these three measuring points.
  • the ideal overall winding contour is a straight, which runs parallel to the drum surface, wherein the total winding cross section forms a parallelogram with the inclination of the cone angle.
  • the invention also relates to a working according to the inventive method cone warping machine having the features in claim 15. Individual device-related features have already been mentioned in connection with the procedure.
  • the measuring device is preferably associated with the sharpening carriage and movable in synchronism with it, but it is additionally movable independently of the sharpening carriage in three different axes.
  • the measuring device must always be in the vicinity of the casserole point of the warp band, ie in the vicinity of the warp sheet. This suggests a coupling with the sharpening, but also a completely independent storage on the frame of the warping machine would be conceivable.
  • the measuring device is arranged on a robot arm, which is movable parallel to the warping drum axis, as well as on a horizontal and on a vertical plane orthogonal to the warping drum axis.
  • FIG. 1 there is a cone warping machine 1 in a known manner from a warping drum 2, which has a cone section 3, and which is mounted rotatably drivable in a machine frame 11.
  • a sharpening slide 5 is mounted on a slide guide 12 and slidable parallel to the warping drum axis 7.
  • the sharpening blade 5 is arranged on the sharpening blade 5, on which the threads coming from the unillustrated creel for the warp band 4 ( Fig. 2, Fig. 3 ) are merged.
  • the sharpening blade 10 is also slidable in the sharpening carriage orthogonal to the warping drum axis, both on a horizontal and on a vertical plane.
  • the warping carriage is advanced during the winding process in the direction of arrow a, so that the cone slope following some Schulrbandsedictionen 6.1, 6.2, etc. are wound.
  • the measuring device is a laser light sensor, with which the outer contour 9 (FIG. Fig. 3 ) of a Schwarzrbandwickels can be scanned in the direction of the warping drum axis 7.
  • the measurement is carried out with standing warping drum 2 in individual steps, wherein the measuring device 8 is moved during the sharpening in a rest position in which it does not affect the warping process.
  • FIG. 2 shows the theoretically resulting structure during winding of a Härbands 4 at each revolution of the drum.
  • the warp band which in reality consists of a plurality of juxtaposed threads, is shown here as a rectangle with a warp band height h corresponding to the thickness of the threads and a warp width B.
  • the sharpening carriage At a cone angle ⁇ on the cone part 3 of the warping drum, the sharpening carriage must obviously be advanced by the distance Sv so that the winding structure follows the cone angle.
  • a winding structure Due to the different setting behavior of the warp strip 4 on the cylindrical and on the conical part of the warping drum surface and on the contacting layers with each other, however, a winding structure, as he greatly exaggerated in FIG. 3 is shown. It is characterized with increasing winding structure an outer contour 9 with a curvature. Depending on how the carriage feed is set, the curvature can be convex or concave relative to the warping drum surface. The outer contour 9 thus forms the basis for generating a control signal for the correction of the carriage feed.
  • FIG. 4 is shown very schematically the control of the warping machine.
  • the warping drum 2 is driven by a drive motor 15, wherein a signal generator 16 detects the drum revolutions and a computer 17 supplies.
  • the sharpening carriage 5 is driven parallel to the warping drum axis 7 with a feed motor 14.
  • the remaining drive motors for moving the warp sheet or the measuring device 8 are not shown here for reasons of clarity.
  • the computer 17 includes a comparison device 18, in which the values determined for the outer contour on the measuring device 8 are entered. Target values can be input from a yarn table 21 to the comparison device 18, which value contains empirically determined values as a function of yarn quality and yarn count.
  • the signals produced by the measuring device 8 can be read, wherein the computer 17 proposes correction values for the next winding process after each measurement process.
  • the user can accept the suggested values or optionally enter alternative values himself.
  • the desired values stored in the yarn table 21 can be corrected after each measurement process by adopting or rejecting the correction values suggested by the computer.
  • the mathematically stored yarn table 21 is thereby permanently expanded and refined, the more different yarn qualities are wound on the device.
  • a first Schwarzbandwickel 22.1 is shown in highly schematic form.
  • the cone angle ⁇ is shown here for reasons of better representability also greater than in reality.
  • the machine is stopped and the measuring device 8 begins to determine the outer contour 9.
  • the laser sensor is moved in the direction of arrow b parallel to the warping drum axis, whereby the outer contour is scanned. However, it is not measured over the entire warp width B, but only over a measuring distance m, on which, as shown, the strongest curvature of the outer contour can be determined.
  • an angle ⁇ is interpolated in the computer, which is representative of the specific outer contour. The angle can be expressed as a coefficient.
  • FIG. 7 is the spatial arrangement of the robotic arm 13 attached to the measuring device 8 can be seen.
  • the sharpening slide 5 is slidably mounted on the two slide guides 12 and 12 'in the direction X.
  • the carriage guide 12 is partially interrupted.
  • the robot arm is between the two slide guides 12 and 12 'slidably mounted on a cross rail 24.
  • FIGS. 8a and 8b illustrate the ability to determine not only the outer contour of a single Schwarzerbandwickels, but the overall winding contour of a plurality of Schwarzrbandwickel and to derive therefrom a control variable for subsequent overall winding.
  • FIG. 8a shows a total winding consisting of the individual Schwarzrbandsetationen 6 1 to 6 4th Measured is at least at a first measuring point 26 directly at the contact point on the cone part, at the second measuring point 27 corresponding to the vertex of the total winding and at the third measuring point 28 at the end facing away from the cone part end of the overall contour.
  • these three measuring points form a triangle with an effective height ⁇ h eff and with a height difference between the measuring points 26 and 27 measured at right angles to the warping drum of ⁇ h.
  • the base of the triangle corresponding to the straight line through the measuring points 26 and 28 extends at an angle to the cylindrical surface of the drum and ⁇ h eff is substantially smaller than ⁇ h.
  • Such a first chain must be optimized to avoid faulty warp threads.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP08105430A 2008-09-25 2008-09-25 Procédé destiné au fonctionnement d'une machine de coupe conique et machine de coupe conique Ceased EP2169098A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08105430A EP2169098A1 (fr) 2008-09-25 2008-09-25 Procédé destiné au fonctionnement d'une machine de coupe conique et machine de coupe conique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08105430A EP2169098A1 (fr) 2008-09-25 2008-09-25 Procédé destiné au fonctionnement d'une machine de coupe conique et machine de coupe conique

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EP2169098A1 true EP2169098A1 (fr) 2010-03-31

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EP08105430A Ceased EP2169098A1 (fr) 2008-09-25 2008-09-25 Procédé destiné au fonctionnement d'une machine de coupe conique et machine de coupe conique

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3181743A1 (fr) * 2015-12-16 2017-06-21 Karl Mayer Textilmaschinenfabrik GmbH Ourdissoir
EP3751033A1 (fr) 2019-06-12 2020-12-16 KARL MAYER STOLL R&D GmbH Ourdissoir sectionnel à cône et procédé de fonctionnement d'un ourdissoir sectionnel à cône

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410786A (en) * 1993-02-18 1995-05-02 Karl Mayer Textilmaschinenfabrik Gmbh Process and arrangement for the warping of threads onto a drum having a conical surface
EP0696332B1 (fr) 1993-04-30 1997-05-14 KARL MAYER TEXTILMASCHINENFABRIK GmbH Procede d'ourdissage de fils
WO2001027367A2 (fr) 1999-10-13 2001-04-19 Benninger Ag Procede d'utilisation d'un ourdissoir conique et ourdissoir conique
EP1460156A2 (fr) * 2003-03-18 2004-09-22 KARL MAYER TEXTILMASCHINENFABRIK GmbH Ourdissoir sectionnel et procédé de production d'une chaîne sur un ourdissoir sectionnel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410786A (en) * 1993-02-18 1995-05-02 Karl Mayer Textilmaschinenfabrik Gmbh Process and arrangement for the warping of threads onto a drum having a conical surface
EP0696332B1 (fr) 1993-04-30 1997-05-14 KARL MAYER TEXTILMASCHINENFABRIK GmbH Procede d'ourdissage de fils
EP0774537A1 (fr) * 1993-04-30 1997-05-21 KARL MAYER TEXTILMASCHINENFABRIK GmbH Ourdissoir
WO2001027367A2 (fr) 1999-10-13 2001-04-19 Benninger Ag Procede d'utilisation d'un ourdissoir conique et ourdissoir conique
EP1460156A2 (fr) * 2003-03-18 2004-09-22 KARL MAYER TEXTILMASCHINENFABRIK GmbH Ourdissoir sectionnel et procédé de production d'une chaîne sur un ourdissoir sectionnel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3181743A1 (fr) * 2015-12-16 2017-06-21 Karl Mayer Textilmaschinenfabrik GmbH Ourdissoir
EP3751033A1 (fr) 2019-06-12 2020-12-16 KARL MAYER STOLL R&D GmbH Ourdissoir sectionnel à cône et procédé de fonctionnement d'un ourdissoir sectionnel à cône

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