EP2545213A1 - Procédé et dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande - Google Patents

Procédé et dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande

Info

Publication number
EP2545213A1
EP2545213A1 EP11714922A EP11714922A EP2545213A1 EP 2545213 A1 EP2545213 A1 EP 2545213A1 EP 11714922 A EP11714922 A EP 11714922A EP 11714922 A EP11714922 A EP 11714922A EP 2545213 A1 EP2545213 A1 EP 2545213A1
Authority
EP
European Patent Office
Prior art keywords
fiber material
conveyor belt
weight
measuring
marked
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
EP11714922A
Other languages
German (de)
English (en)
Other versions
EP2545213B1 (fr
Inventor
Reinhold Döring
Bernhard RÜBENACH
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.)
Truetzschler Nonwovens GmbH
Original Assignee
Truetzschler Nonwovens GmbH
Erko Truetzschler 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 Truetzschler Nonwovens GmbH, Erko Truetzschler GmbH filed Critical Truetzschler Nonwovens GmbH
Priority to EP20110714922 priority Critical patent/EP2545213B1/fr
Publication of EP2545213A1 publication Critical patent/EP2545213A1/fr
Application granted granted Critical
Publication of EP2545213B1 publication Critical patent/EP2545213B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D01G23/04—Hoppers; Delivery shoots with means for controlling the feed
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G21/00—Combinations of machines, apparatus, or processes, e.g. for continuous processing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/06—Arrangements in which a machine or apparatus is regulated in response to changes in the volume or weight of fibres fed, e.g. piano motions
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/006—On-line measurement and recording of process and product parameters

Definitions

  • the invention relates to methods for measuring the weight of an endless stream of web-shaped fiber material and to an apparatus for carrying out the method according to the preamble of the method or device claim.
  • a device for transporting a fiber layer to a carding machine is known.
  • the transport route begins at a Rütischachtspeiser, which deposits fibers on a first conveyor belt.
  • the fiber layer passes to the circulating conveyor belt of a belt scale via a further driven conveyor belt and from there to the insertion of a carding machine.
  • sensors In the belt scale via there mounted measuring devices, sensors, the determination of the weight of the located on the band of the belt scale fiber layer signals.
  • the signals are fed to a controller, which processes these in conjunction with speed signals of the carding machine, such that the carding forms a uniform, uniform nonwoven fabric.
  • the fiber layer to be analyzed by the belt weigher with respect to its weight is transferred from a conveyor belt in the previous transport conveyor belt scale, and then from the belt weigher to another, downstream conveyor belt, which serves to feed a card.
  • the guide rollers of the corresponding conveyor belts are parallel to each other.
  • the fiber layer of the one on the following de transport conveyor unsupported.
  • distortions occur in the transfer areas which, due to the resulting stresses, lead to a falsification of the measurement result of the belt scale.
  • a device for feeding fibers to a textile machine is known from DE 10 2008 022 817 A1, in which fibers are deposited via a shaft on a take-off device designed as a circulating transport belt. Below the shaft, the weight of the fibers deposited thereon is measured with a first measuring device and controlled according to the transport speed of the conveyor belt. Thus, for example, a downstream opening unit, a constant fiber mass per unit time can be supplied.
  • This known device has, in addition to the first measuring device in the conveying direction of the fibers behind the shaft, a second measuring device. Due to the nature of the fibers caused by the behavior of the fibers within the shaft or in the filing of the fibers on the conveyor belt can not be determined by the first measuring device, the correct weight. Due to the second measuring device in a region in which the fibers have left the shaft, the actual belt located on the belt is measured quantity. This primary and secondary measurement results in a differentiated control of the fiber flow.
  • the present invention is therefore based on a method for measuring the weight of an endless stream of web-shaped fiber material, which is conveyed on a revolving conveyor belt, wherein formed by means of an associated measuring system corresponding to the weight of the fiber material located on the conveyor belt signal and this particular for controlling a the fiber material processing machine is used.
  • the object of the present invention is to improve such a method and a corresponding device. This object is achieved by the features of the method or device claim. Advantageous developments of the invention will become apparent from the respective dependent claims.
  • a signal corresponding to the weight per unit area of the material is determined in the transport direction, which signal is taken into account in the evaluation of the weight signal detected in the region of the revolving conveyor belt.
  • the signal corresponding to the basis weight of the material signal is determined at the outset of a fiber material processing machine, which is arranged downstream of the conveyor belt.
  • the machine processing the fiber material is preferably a carding machine and / or a stacker.
  • the area weight value of the fleece produced by the carding machine and / or the crosslapper is used in the region of the circulating conveyor belt.
  • the basis weight, the basis weight is determined by a radiometric measuring principle. Known measuring principles for determining the basis weight use isotope radiation sources such as promethium, krypton or strontium.
  • the radiation passing through the material or radiated back from the material is detected, wherein the basis weight of the nonwoven can be determined from the intensity of the respective radiation.
  • optical measuring methods can also be used.
  • the basis weight is also the width of the web of the fiber material, the fleece and the speed of the web determined. From the basis weight, the width of the fiber or nonwoven web and the speed of the mass flow rate can be calculated, ie the mass of fiber or nonwoven material per unit time.
  • the device for carrying out the method consists of an endlessly circulating conveyor belt, on which fiber material is transported, wherein the conveyor belt forms a belt scale with an associated measuring system, and an evaluation device which is in signal communication with the measuring system, for determining the weight of fiber material.
  • the evaluation device additionally receives a signal from a measuring device for determining the basis weight of the basis weight of the fiber material, the measuring device being arranged downstream of the conveyor belt in the transport direction.
  • the following measures are planned:
  • the measuring device for determining the basis weight is arranged starting from a fiber material processing machine, which is arranged downstream of the conveyor belt.
  • the evaluation is connected to the control of the fiber material processing machine and thus is part of a control system through which the control and in particular the control of the speed of the fiber material processing machine takes place.
  • the machine processing the fiber material is a card and / or a stacker.
  • the measuring device for determining the basis weight is a transversely to the conveying direction of the fiber material movably suspended measuring head.
  • the measuring device for determining the basis weight is a radiometric measuring device.
  • the web-shaped fiber material is a fiber layer, which is deposited by a feeder (Rüttelschachtspeiser, Krempelspeiser) on a first conveyor belt. This fiber layer is then transferred to a second circulating conveyor belt, which forms a belt scale with an associated weight measuring system. Subsequently, a further transfer of the fiber layer to the collection of a card.
  • the pile formed by the carding is laid by a cross-lapper to a fleece of intended thickness.
  • the output of the cross-stacker is a surface mass, the basis weight of the nonwoven determining measuring device arranged, which operates on a radiometric principle of action.
  • the measuring system is suspended on a transverse to the direction of movement of the nonwoven web traverse and performs during the measurement periodic reciprocating movements across the width of the nonwoven web.
  • the homogeneity of the nonwoven web as well as density fluctuations can be recognized.
  • the width of the nonwoven web can be determined.
  • the signals of the area measuring system and the speed signal output of the cross stacker are used to correct the results of the weight measuring system of the belt scale at the beginning of the carding.
  • the time average of the mass flow (mass per unit time) output of the Wienlegers equal to the time average of the mass flow at the beginning of the carding (mass flow over belt scale).
  • the ratio of the mentioned mass flows is equal to one.
  • the mass flow output of the crosslapper results from the product basis weight, product width and production speed.
  • the web width is hereby continuously determined by the area measuring system itself, by detecting the signal jumps which occur when the edges of the nonwoven web are passed over and with the . Position signals of the measuring head are processed.
  • the production speed is known and is present as a corresponding signal of the control of the card / the crosslapper or is detected with a separate speed sensor.
  • a correction factor can be determined by the method according to the invention, which indicates how much the weight value of the fibrous layer in the area of the belt weigher is actually higher or lower than the measured value determined merely by means of a belt weigher.
  • Fig. 1 shows a schematic diagram of the solution according to the invention.
  • 2 shows a top view of the conveyor line according to FIG. 1.
  • a feedstock RSS feed generates a web-shaped fiber layer F on a first conveyor belt T1.
  • This first conveyor belt T1 is guided around a deflection roller U1 and, in this area, forwards the fiber layer F to a conveyor belt TBW which runs around deflection rollers UA, UB under tension in the direction of the arrow.
  • Parallel to the guide roller UB there is a further guide roller U2, which clamps a further conveyor belt T2.
  • the fiber layer F is transferred from the conveyor belt TBW to the further conveyor belt T2.
  • This conveyor belt T2 is coupled to a in the drawing only indicated carding KR and feeds them.
  • the web V has output of the cross-stacker KL at a speed v, which is determined by means of a speed sensor SV.
  • the speed sensor SV is For example, to a standing with the web V in contact measuring roller, which is connected to an incremental encoder.
  • the nonwoven web V extends TraverseT, which carries a measuring head M, by means of which the basis weight of the web V is determined.
  • the measuring head M and the speed sensor SV are in signal communication with an evaluation device A, which has the electronics for evaluating the signals.
  • the electronics of the evaluation device A is also supplied with a signal of the movement control of the measuring head M, so that the movement of the measuring head M detected and in connection with the measurement signals, the width of the nonwoven web V can be determined.
  • the signal of the movement control of the measuring head M of the traverse T which has corresponding drive means, is taken.
  • the evaluation device A determines from the signal of the measuring head M, the basis weight q of the web V, for example in the unit [kg / m 2 ]. Also, by evaluating the motion signal of the measuring head M, the width b of the nonwoven web V is determined - unit [m]. Finally, the speed sensor SV delivers a speed signal which can be converted into a speed value v - unit [m / h].
  • the mass flow rate Am / At in the region of the measuring head M can be determined, that is to say how much mass Am is conveyed to the nonwoven V per unit time At output of the cross-stacker KL. Calculated results thus:
  • the tensioned around the guide rollers UA and UB conveyor belt TBW cooperates with a weight sensor GS, such that the conveyor belt TBW forms a belt scale.
  • a weight sensor GS By the weight sensor GS, the load of between the guide rollers UA, UB stretched portion of the conveyor belt TBW is detected - for example, the slack of the tape.
  • the deflection rollers UA, UB can also be coupled with force-measuring devices and thus form the measuring system for loading the conveyor belt TBW of the belt scale.
  • the representation of the weight sensor GS is thus purely a matter of principle.
  • the weight sensor GS is connected to the evaluation device A, in which the mass of the fiber layer F located on the belt scale is determined from the signal thereof. For reasons already explained, this value, which is recorded exclusively via the belt scale, is subject to errors.
  • the evaluation device A detects the mass value of the fiber layer F determined by means of the belt weigher over time and forms the mass flow Am / At which passes through the belt weigher in the direction of carding K, crosslapper KL, i. the mass of fibers per unit of time at unit [kg / h].
  • the actual mass value of the fiber layer F can be determined from the current measured value determined by means of the sensor system GS of the belt weigher, which is supplied to the controller ST of the drive for the carding machine KR and used for speed control.
  • the evaluation device A is connected to the controller ST of the carding machine KR.
  • the mass determined in this way value can also be displayed on a display of a machine terminal, not shown, via which the values provided for production are set.
  • Figure 2 is a representation of the conveyor line of Figure 1 in a schematic representation of the top.
  • UA guide roller (conveyor belt belt scale)
  • UB guide roller (conveyor belt belt scale)
  • measuring head M measuring device, measuring head

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

L'invention concerne un procédé et un dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande qui est transporté sur une bande transporteuse sans fin. Au moyen d'un système de mesure associé, un signal correspondant au poids du matériau fibreux se trouvant sur la bande transporteuse est formé et est utilisé en particulier pour la commande d'une machine traitant le matériau fibreux. Selon l'invention, on détermine, dans la direction du transport, en aval du système de mesure (GS, TBW) de la bande transporteuse (TBW), un signal correspondant à la masse surfacique, au poids par unité de surface du matériau ; ce signal est pris en compte pour l'évaluation du signal de poids saisi dans la zone de la bande transporteuse (BW) sans fin. Un dispositif d'évaluation (A) reçoit en plus un signal d'un dispositif de mesure (M) pour la détermination de la masse surfacique, du poids par unité de surface du matériau fibreux (F, V), le dispositif de mesure (M) étant disposé en aval de la bande transporteuse (TBW) dans le sens du transport.
EP20110714922 2010-03-08 2011-02-11 Procédé et dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande Active EP2545213B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20110714922 EP2545213B1 (fr) 2010-03-08 2011-02-11 Procédé et dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10002347 2010-03-08
PCT/DE2011/000133 WO2011110145A1 (fr) 2010-03-08 2011-02-11 Procédé et dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande
EP20110714922 EP2545213B1 (fr) 2010-03-08 2011-02-11 Procédé et dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande

Publications (2)

Publication Number Publication Date
EP2545213A1 true EP2545213A1 (fr) 2013-01-16
EP2545213B1 EP2545213B1 (fr) 2015-05-06

Family

ID=43927802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110714922 Active EP2545213B1 (fr) 2010-03-08 2011-02-11 Procédé et dispositif servant à mesurer le poids d'un flux sans fin d'un matériau fibreux en bande

Country Status (4)

Country Link
EP (1) EP2545213B1 (fr)
CN (1) CN102884231B (fr)
DE (1) DE112011100828A5 (fr)
WO (1) WO2011110145A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012008931B4 (de) * 2012-05-04 2014-08-21 Trützschler GmbH & Co Kommanditgesellschaft Verfahren und Vorrichtung zur Einstellung der Faserorientierung an Krempelanlagen
EP2695982A1 (fr) * 2012-08-06 2014-02-12 Oskar Dilo Maschinenfabrik KG Dispositif et méthode pour égaliser ou obtenir un profil donné à un matelas de flocons de fibres
CN102995172A (zh) * 2012-11-26 2013-03-27 无锡市灵特电子仪器设备有限公司 一种称重式导棉槽
DE102017126753A1 (de) * 2017-11-14 2019-05-29 Autefa Solutions Germany Gmbh Überwachungstechnik für Vliesfabrikationsanlagen
CN108823787A (zh) * 2018-06-07 2018-11-16 苏州宏久航空防热材料科技有限公司 一种全自动棉毡生产容量调节系统
CN110629329B (zh) * 2019-10-18 2024-06-21 盐城金大纺织机械制造有限公司 一种多品种混纺自动控制系统

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CH576633A5 (fr) * 1974-03-08 1976-06-15 Rieter Ag Maschf
FR2641290B1 (fr) * 1988-09-22 1991-03-08 Alexandre Antoine Sarl Anc Ets Chargeuse-peseuse
EP0635589A1 (fr) * 1993-07-21 1995-01-25 Hergeth Hollingsworth Gmbh Procédé et appareil pour le réglage du poids de la nappe ou de la mèche d'un produit final d'une machine travaillant des fibres
GB9422889D0 (en) * 1994-11-12 1995-01-04 Garnett Controls Ltd Fibre metering arrangement
DE29909016U1 (de) * 1999-05-26 2000-10-05 Autefa Maschinenfabrik GmbH, 86316 Friedberg Vliesanlage
FR2794475B1 (fr) * 1999-06-01 2001-08-17 Asselin Procede pour reguler le profil d'une nappe non-tissee et installation de production s'y rapportant
CN1281914A (zh) * 2000-05-12 2001-01-31 韩江鹏 一种控制梳棉胎重量的方法
DE10252203A1 (de) * 2002-11-09 2004-05-27 Hergeth, Hubert A., Dipl.-Ing. Dipl.-Wirtsch.-Ing. Verfahren zur Breitenverteilung
DE102007014694B4 (de) 2007-03-27 2012-01-26 Oskar Dilo Maschinenfabrik Kg Vorrichtung zum geführten Transport einer Faserflockenmatte
EP2014813B1 (fr) * 2007-07-09 2010-12-22 Oskar Dilo Maschinenfabrik KG Procédé de fabrication d'un non tissée consolidé
DE102008022817A1 (de) 2008-05-08 2009-11-12 ERKO Trützschler GmbH Kontinuierliche Verwiegung von Faserflocken

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Also Published As

Publication number Publication date
CN102884231A (zh) 2013-01-16
WO2011110145A1 (fr) 2011-09-15
EP2545213B1 (fr) 2015-05-06
CN102884231B (zh) 2016-02-24
DE112011100828A5 (de) 2012-12-27

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