EP2573255A1 - Dispositif actif de correction de déformation d'une structure textile ainsi qu'un procédé correspondant - Google Patents

Dispositif actif de correction de déformation d'une structure textile ainsi qu'un procédé correspondant Download PDF

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Publication number
EP2573255A1
EP2573255A1 EP12182755A EP12182755A EP2573255A1 EP 2573255 A1 EP2573255 A1 EP 2573255A1 EP 12182755 A EP12182755 A EP 12182755A EP 12182755 A EP12182755 A EP 12182755A EP 2573255 A1 EP2573255 A1 EP 2573255A1
Authority
EP
European Patent Office
Prior art keywords
straightening
wheels
wheel
drive unit
directional
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.)
Withdrawn
Application number
EP12182755A
Other languages
German (de)
English (en)
Inventor
Bernhard Fischer
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.)
Mahlo GmbH and Co KG
Original Assignee
Mahlo GmbH and Co KG
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 Mahlo GmbH and Co KG filed Critical Mahlo GmbH and Co KG
Publication of EP2573255A1 publication Critical patent/EP2573255A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H3/00—Inspecting textile materials
    • D06H3/12—Detecting or automatically correcting errors in the position of weft threads in woven fabrics

Definitions

  • the invention relates to a straightening device for the active distortion correction of a conveyed web according to the preamble of claim 1 and an associated method according to the preamble of claim. 7
  • a textile material web consists in particular of threads crossed at right angles, which are produced during the weaving process in the loom or in the weaving machine.
  • warp longitudinal threads
  • weft transverse threads
  • skew direction of goods warp
  • bow distortion arcuate to the direction of goods running distortion
  • the textile web is guided over mechanical straightening arrangements, in which the existing distortions are compensated for by means of corresponding application of compensating forces on the moving textile material web by means of roll units arranged obliquely or arcuately to the running direction of the textile web.
  • roll-based directing arrangements are preferably used to eliminate arcuate thread and stitch distortion. Asymmetrical distortion of a web can be corrected only to a limited extent with such roller-based straightening arrangements.
  • directional arrangements are known in which the moving textile material web is tensioned at the opposite material web edges via at least two oppositely arranged rotatably mounted directional wheels, in particular needle direction wheels, transversely to the direction of travel of the textile material web.
  • directional wheels By pivoting the directional wheels about a pivot axis in a predetermined angle to the direction of travel of the textile web and with a predetermined lateral force a laterally outwardly acting transverse stress is introduced into the textile web and thereby causes a spreading of the web.
  • the web edges of the warp-knitted textile web are thus with a defined straightening force to the outside, i. acted upon in the direction of the weft of the textile web. The result is a component of force that seeks to re-shape the parallelogram structure into the original orthogonal structure.
  • straightening arrangements in particular needle straightening arrangements, by means of which, in addition to oblique and curved distortions, asymmetrical distortions can also be corrected automatically and, in addition to woven goods webs, knitwear webs can also be directed, with smallest residual distortion tolerances.
  • the present invention seeks to provide a straightening device with active distortion correction and an associated method, which allows a precise, preferably automated distortion correction, especially for very complex and complicated web structures.
  • the object is achieved on the basis of a straightening arrangement according to the preamble of claim 1 by its characterizing features.
  • the features of the method according to the invention are listed in the patent claim 8.
  • the essential aspect of the straightening arrangement according to the invention is to be seen in that the first and second directional wheels are actively driven.
  • the inventive active drive of the straightening wheels even the slightest skewed distortions can be compensated, which are no longer correctable by passive straightening.
  • the construction of transverse strains for directional purposes is less important.
  • Advantageously can thus be corrected with irregular straightening with the straightening device according to the invention also transversely elastic webs.
  • a first drive unit and for driving the second directional wheel a second drive unit is provided, wherein the first and second drive unit are independently controllable, preferably via a control unit.
  • the first and second drive units are advantageously each assigned directly to the first and second directional wheels to be driven, i. the first and second drive units are connected directly or indirectly to the first and second directional wheels.
  • the first drive unit via a first gear unit with the first directional wheel and the second drive unit via a second gear unit with the second directional wheel.
  • a method for active distortion correction of a conveyed, in particular textile web by means of a straightening arrangement comprising at least a first straightening wheel and a second straightening wheel.
  • the directional wheels are actively driven, preferably independently.
  • the first directional wheel is directly or indirectly driven via a first drive unit and the second directional wheel via a second drive unit, for example synchronously or at least briefly to compensate for skewed distortion at a differential speed.
  • FIG. 1 is shown in a front view of a leveler 1 in a simplified representation, which has a straightening arrangement 2 according to the invention for active distortion correction of a conveyed, in particular textile web W.
  • FIG. 2 shows by way of example a schematic cross section through the straightening machine 1 and the straightening arrangement 2 according to the invention received therein.
  • the web W is in this case conveyed in a web direction WL by the leveler 1 and thereby subjected to at least one straightening process.
  • the leveler 1 includes, for example, a schematically in FIG. 2 indicated machine frame 3, in which the straightening arrangement 2 according to the invention and further roller assemblies are added.
  • the machine frame 3 forms a rigid, rectangular frame.
  • the basic technical structure of such straightening machines 1 and in particular of the machine frame 3 provided for this purpose is sufficiently known from the prior art and can have very different forms of implementation.
  • the straightening arrangement 2 for active distortion correction has at least a first straightening wheel 4 and a second straightening wheel 5, which are preferably designed as needle straightening wheels.
  • Such needle-directional wheels each have from the end faces in the radial direction outwardly projecting needles, which are distributed almost uniformly along the frontal periphery of the needle direction wheels.
  • the first straightening wheel 4 is rotatable about a first pivot point DP1 and pivotable about a first pivot axis SA1 and the second straightening wheel 5 rotatable about a second pivot point DP2 and pivotable about a second pivot axis SA2 formed.
  • FIG. 1 shows the straightening wheels 4, 5 in the directional position, ie, the first and second straightening wheels 4, 5 include approximately an acute angle with the fabric running direction WL.
  • SA1, SA2 To the Pivoting of the first and second straightening wheels 4, 5 about the respective pivot axis SA1, SA2 an adjusting mechanism 6 not described in more detail is provided, via which both the adjustment of the straightening wheels 4, 5 and the distance of the straightening wheels 4, 5 can be adjusted to each other.
  • the web W is fed via an inlet roller 7 a roller conveyor 8 for conveying de web W, which may have, for example, an S-wrap.
  • a spreader roller assembly 9 for wrinkle-free feeding of the web W to the straightening device 2 and their directional wheels 4, 5.
  • the web W is removed via a take-off roller 10 from the straightening wheels 4, 5 and fed to an output side arranged Bogenrichtwalzenan Aunt 11 , can be corrected by means of the still contained in the web W minimal Bogenrestververs before the web W leaves the leveler 1.
  • the first and second straightening wheels 4, 5 are actively driven, ie, a first drive unit 12 is provided to drive the first straightening wheel 4 and a second drive unit 13 is provided to drive the second straightening wheel 5, each directly to the first and second straightening wheels 4 to be driven , 5 are assigned.
  • the first and second drive unit 12, 13 via a first and second gear unit 14, 15 directly or indirectly connected to the first and second directional wheel 4, 5.
  • the first and second drive units 12, 13 may be realized, for example, in the form of electric motors, in particular DC or stepper motors, whose speed is adjustable.
  • the first and second drive unit 12, 13 are independently controllable, and are preferably by means of an evaluation and control unit ASU.
  • the first and second drive units 12, 13 are actuated via an evaluation and control routine executed in the evaluation and control unit ASU in such a way that the first and second directional wheels 4, 5 are synchronous or at least short-term Balancing skew with a differential speed to be driven.
  • the active Drive the directional wheels 4, 5 the construction of transverse stresses for directional purposes to a lesser importance, since a balance of oblique distortions on the actively driven directional wheels 4, 5 can be realized.
  • Advantageously can thus be corrected with irregular straightening with the straightening arrangement 2 according to the invention also transversely elastic webs W.
  • a measuring unit FMC is provided, via which the current delay parameters of the web W are determined on the outlet side and they are transmitted to the connected to the measuring unit FMC evaluation and control unit ASU.
  • the evaluation and control unit ASU the evaluation of the current default parameters via the evaluation and control routine, which generates corresponding control signals for controlling the first and second drive unit 12, 13 takes place.
  • the measuring unit FMC can be embodied, for example, in the form of one or more probe units for detecting oblique distortions, bow distortions and / or asymmetrical distortions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
EP12182755A 2011-09-21 2012-09-03 Dispositif actif de correction de déformation d'une structure textile ainsi qu'un procédé correspondant Withdrawn EP2573255A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011113852A DE102011113852A1 (de) 2011-09-21 2011-09-21 Richtanordnung zur aktiven Verzugskorrektur einer geförderten Warenbahn sowie zugehöriges Verfahren

Publications (1)

Publication Number Publication Date
EP2573255A1 true EP2573255A1 (fr) 2013-03-27

Family

ID=46762946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12182755A Withdrawn EP2573255A1 (fr) 2011-09-21 2012-09-03 Dispositif actif de correction de déformation d'une structure textile ainsi qu'un procédé correspondant

Country Status (2)

Country Link
EP (1) EP2573255A1 (fr)
DE (1) DE102011113852A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11229268A (ja) * 1998-02-19 1999-08-24 Me Kaihatsu Giken:Kk 布目を矯正する方法及び布目矯正機
JP2002266231A (ja) * 2001-03-07 2002-09-18 Seiren Denshi Kk 拡布式布目矯正機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11229268A (ja) * 1998-02-19 1999-08-24 Me Kaihatsu Giken:Kk 布目を矯正する方法及び布目矯正機
JP2002266231A (ja) * 2001-03-07 2002-09-18 Seiren Denshi Kk 拡布式布目矯正機

Also Published As

Publication number Publication date
DE102011113852A1 (de) 2013-03-21

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