EP3794169A1 - Procédé de détermination de la garniture de tambour au niveau d'une karde et karde équipée d'une commande associée - Google Patents

Procédé de détermination de la garniture de tambour au niveau d'une karde et karde équipée d'une commande associée

Info

Publication number
EP3794169A1
EP3794169A1 EP19720830.9A EP19720830A EP3794169A1 EP 3794169 A1 EP3794169 A1 EP 3794169A1 EP 19720830 A EP19720830 A EP 19720830A EP 3794169 A1 EP3794169 A1 EP 3794169A1
Authority
EP
European Patent Office
Prior art keywords
drum
fibers
card
determined
occupancy
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.)
Pending
Application number
EP19720830.9A
Other languages
German (de)
English (en)
Inventor
Martin Dovern
Thomas BALVEN
Maximilian Marx
Armin Leder
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 Group SE
Original Assignee
Truetzschler 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 Truetzschler GmbH and Co KG filed Critical Truetzschler GmbH and Co KG
Publication of EP3794169A1 publication Critical patent/EP3794169A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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 present invention relates to a method for determining the drum occupancy on a card and a card with an associated control.
  • drum assignment refers to the entire fiber mass, which is stationary and temporary on the drum or in the drum space of a card. It is known that the production, belt number, carding, rotational speeds of the rotating components, clothing selection, fiber material, fiber length and other components have an influence on the drum occupancy. In particular, in the rapid change of textile fibers due to production changes, such as cotton fibers on chemical fibers or blends of textile fibers, it is necessary to know with which caster the previous fibers are processed in the card. If, during a change of material, the new card sliver is measured after too short a start-up phase, quality losses can be ascertained whose cause lies in the drum occupancy with the previous fibers.
  • EP 1167591 A1 describes the possible influence of the transmission factor (doffer transient) on cards. This refers to the proportion of fiber mass on the drum covering that is per
  • Drum rotation passes to the customer.
  • This font suggests To determine the number of nodules and the fiber length distribution and to link them together to optimize the production. The font gives no indication as to how a control optimizes the operating parameters because of this link, since the characteristic curves described here are not further defined.
  • the transmission factor is to be qualitatively changed by adjusting the factors Nissan number, fiber length distribution and pad spacing, without revealing how the transmission factor is precisely determined. According to this prior art, the transmission factor and thus the fiber flow should be controlled during operation, in which the operating parameters are automatically adjusted.
  • the object of the invention is to provide a method by which the drum occupancy of a carding machine can be determined.
  • the invention includes the technical teaching that when determining the drum occupancy of a card, the supply of fibers in the card stopped and simultaneously the entire located in the drum chamber of the carding fibers are deducted, the band number and the delivery of the fibers (delivery) on Carding output is measured.
  • the core idea of the invention is the emptying of the entire drum space with fibers, some of which rotate around the rotating drum several times. Not only on the
  • the operation of the card must be interrupted in order to allow it to idle from the fibers and thus determine the current drum occupancy.
  • the operation or the production in a second embodiment can also be reduced in order to selectively generate a thin spot, from which the determination of the drum occupancy takes place. If the result of the measurement for drum occupancy differs from a reference value, the operator receives an indication of a faulty setting and / or a worn set and / or a change in the fiber quality.
  • An advantageous development of the method provides that the supply of fibers is interrupted in the card by the stop or the reduced promotion of a feed roller.
  • the feed roller is at the beginning of the theoretical material orbit of the fibers in the card.
  • the end of the material orbit is defined by the hopper or the metering rollers at the exit of the card, where the tape number and delivery path are measured.
  • the time that the fibers pass along the material orbit from the feed roll to the hopper or metering rolls is defined as dead time. It can be determined by the speed and wrap angle of the fibers on the rotating components for each card.
  • the temporary drum occupancy can be determined by determining the dead time and the measured tape number become. This corresponds to the smallest delivery path, where the card sliver is tightened with the same volume number at the funnel.
  • the entire fiber mass located in the drum space can be determined.
  • the cards can be adjusted in a fiber change in terms of quality assurance so that incorrect measurements are avoided.
  • Determining the drum occupancy can determine whether the card is correctly set for production at the current fiber quality. The deviation from a reference value stored in the control of the card for each fiber quality indicates to the card operator that the card is not set correctly. In this case, if necessary, the speed of the drum or the pickup deviate from an optimum, so that at a high speed, the drum occupancy decreases.
  • the controller automatically suggests the optimum setting data to the operator when determining the drum occupancy and a deviation from the reference value, which are compared with the existing setting data. This excludes the possibility that wrong setting data add up to a correct reference value, but the quality of the carding tape is poor.
  • the card according to the invention comprises a control for determining the drum occupancy, wherein the controller is adapted to compare the determined drum occupancy for each fiber quality with its own specific reference value and for deviations between the determined drum occupancy and the specific reference value to the operator hints for optimized setting of the card give.
  • a data memory is connected to the controller, in which empirically determined values for drum occupation (reference values) depending on the fiber quality are stored with optimum setting values of the card.
  • Figure 1 is a sectional view through a card
  • FIG. 2 shows an associated measurement diagram for determining the
  • Figure 3 is an associated measurement diagram for determining the
  • FIG. 1 shows a card according to the prior art, are passed through the fiber flock via a shaft to a feed roller 1, a dining table 2, via a plurality of lickerin 3a, 3b, 3c to the drum 4 or the drum.
  • the fibers of the fiber flakes are parallelized and cleaned by means of fixed and arranged on a revolving lid circulating carding 20.
  • the resulting batt is subsequently conveyed via a pickup 5, a pickup roller 6 and a plurality of squeezing rollers 7, 8, to a web guiding element 9, which converts the batt into a sliver with a funnel 10, which is conveyed via take-off rollers 11, 12 to a downstream processing machine Jug 15 is handed over.
  • a funnel 10 measuring rolls, not shown, can also transform the resulting fleece into a sliver and thereby determine the mass flow.
  • the drum assignment consists of the stationary drum assignment sTB and the temporary drum assignment tTB.
  • the temporary drum occupation tTB designates the fiber mass which is present on the active carding surface from the feed roller 1 to the pickup 5.
  • the fibers are located in the area of the material circulation path 14 on the drum 4. This amount is relatively small and can be approximately 2.0 g, for example, for a drum 4 of 1,300 mm diameter and 1,280 mm working width with a belt weight of 4.92 ktex.
  • the stationary drum assignment sTB denotes the fiber mass, which is stored, inter alia, in the sets of the drum space and is not removed from the pickup 5. This fiber mass can be circulated several times with the drum 4 and transported.
  • the amount for the stationary drum assignment sTB can be about 16 g for the same card dimensions and is thus many times greater than the temporary drum assignment tTB. Neglected in this approach, the waste, which is usually less than 5% of the amount of fiber.
  • the entire drum space is run empty in the following sequence:
  • the feed roller 1 stops in production. Since the fibers are transported, inter alia, via the drum 4 and the pickup 5, the fiber flow on the feed roller 1 breaks off. Simultaneously with the stop of the feed roller 1, a signal (CCD signal) is recorded at the funnel 10, with which the band break is detected. About recorded speeds of lickers 3a, 3b, 3c, drum 4, pickup 5 to the doffer rollers 11, 12, the dead time can be determined, within the theoretically the fibers of the Feed roller 1 are transported to the hopper 10. The dead time defines the time it takes the fibers to travel along the material circulation path 14 from the feed roll 1 to the hopper 10. It is thus the shortest or ideal fiber circulation time between the feed roller 1 and the funnel 10. The dead time results from the speed and the wrap angle of the fibers on the respective component, so for example the lickerin 3a, the drum 4 or the pickup. 5
  • FIG. 2 shows a measurement diagram in which the delivery path in meters of the card sliver or of the fibers in the card is plotted on the abscissa.
  • the band number is entered in kilotex, which is 5.49 ktex here.
  • the jagged curve is the connection of the individual measured values MW at the funnel 10.
  • the area under the curve yields the entire fiber mass FM in the system.
  • the left-hand rectangular area indicates the strip mass produced during the dead time, which runs along the material circulation path 14 as far as the funnel 10.
  • the tape number runs relatively constant in this embodiment up to 4.7 m delivery. This corresponds to the fiber mass which was produced within the dead time.
  • the drop in the measurement curve shows that the further fiber mass located in the carding chamber is removed, with the sliver becoming increasingly thinner at the funnel 10 and therefore falling in the band number.
  • the band number drops to about 1.5 ktex and ends at a delivery distance of about 14 m.
  • the entire area under the measurement curve thus shows the fiber mass FM located in the carding chamber. If the fiber mass produced in the dead time (left rectangular area) is subtracted from this fiber mass FM located in the carding chamber, this results in the stationary drum occupancy. Determining the drum occupancy after the first Embodiment can be performed at any time by a business interruption on the card.
  • the dead time can be determined, within which theoretically the fibers are transported from the feed roller 1 to the hopper 10.
  • the dead time defines the time it takes the fibers to travel along the material circulation path 14 from the feed roll 1 to the hopper 10. It is thus the shortest or ideal fiber circulation time between the feed roller 1 and the funnel 10.
  • the dead time results from the speed and the wrap angle of the fibers on the respective component, so for example the lickerin 3a, the drum 4 or the pickup. 5
  • FIG. 3 shows a measurement diagram in which the delivery path in meters of the card sliver or the fibers in the card is plotted on the abscissa.
  • the band number is entered in kilotex, which is 5.49 ktex here.
  • the jagged curve is again the connection of the individual measured values MW, which are determined at the funnel 10.
  • the area under the curve gives the entire fiber mass FM located in the system.
  • the left rectangular area indicates the dead time produced strip mass that runs along the material circulation path 14 to the hopper 10.
  • the tape number runs relatively constant in this embodiment up to 4.7 m delivery. This corresponds to the fiber mass which was produced within the dead time.
  • the drop in the measurement curve shows that the further fiber mass located in the carding chamber is removed, with the sliver becoming increasingly thinner at the funnel 10 and therefore falling in the band number.
  • the feed roller 1 is accelerated again to the normal operating value in the rotational speed, so that the curve with the measured values MW increases slowly again until the normal fed-in fiber quantity of approximately 5.49 ktex is again reached constant .
  • the sunken curve with the measured values MW is the basis at this point in time T, in order to determine a curve with simulated measured values sMW based on the values for drum occupation (exemplary embodiment 1) determined by the card manufacturer, which likewise drops to about 1.5 ktex with the belt number and ends at a delivery of about 14 m.
  • the entire area under the measurement curve thus shows the fiber mass FM located in the carding chamber.
  • the area under the simulated measurement curve sMW then shows the fiber mass FM located in the carding chamber in the event of an interruption in production. If the fiber mass produced in the dead time (left rectangular area) is subtracted from this simulated fiber mass FM present in the carding chamber, the stationary drum assignment results without the operator of the card having to interrupt production.
  • This second embodiment of determining the drum occupancy is based on the knowledge and data obtained with the determination of the drum occupancy according to the first embodiment.
  • the card also has a control in which by means of data storage reference values for the drum assignment are deposited at different fiber qualities. These reference values include predetermined setting values for the card operation, such as at least the rotational speed of the drum 4 and the pickup 5, the associated trimmings and the size of the carding nip, and the distance of the pickup 5 from the drum 4.
  • Determining the drum occupancy can determine whether the card is correctly set for production at the current fiber quality. In case of deviations from the reference value, possible causes are displayed to the operator so that he can check the setting of the card. If the reference value of the drum assignment has been reached with the recommended settings for a first measurement, but not after a second measurement after approx. One week operation, this may be due to an adjustment of the card operating parameters due to temperature change or cloth wear. Based on stored empirical data, the controller proposes a solution for the operator, for example to adjust the carding gap, to check the clothing or to control the distance from the pickup 5 to the drum 4. If the carding gap or worn garment is too large, drum usage may increase or decrease. The wrong selection of the clothing is represented by a deviation from the reference value.
  • the controller automatically suggests the optimum setting data to the operator when determining the drum occupancy and a deviation from the reference value, which are compared with the existing setting data. This excludes the possibility that wrong setting data add up to a correct reference value, but the quality of the carding tape is poor.
  • a card is set to a production of 80 kg / h cotton of quality PIMA.
  • the delivery speed of the produced card sliver is 271 m / min at 4.92 ktex.
  • the drum 4 is operated at 500 rpm, and the pickup 5 at 64 rpm.
  • the reference value of the drum assignment is 17.9 g with a total fiber mass of 36.3 g in the drum space.
  • the measurement results in a temporary drum occupancy tTB of 2 g and a stationary drum occupancy of 15.9 g, so that the total drum occupancy without deduction of waste discharge is 17.9 g.
  • this can be an indication of an enlarged carding gap and the controller proposes to the operator an adaptation of the carding gap or can independently determine this by means of sensors and set by means of actuators.

Landscapes

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

Abstract

La présente invention concerne un procédé de détermination de la garniture du tambour sur une carde. L'alimentation de la carde en fibres est arrêtée et, dans le même temps, toutes les fibres situées dans l'espace de tambour de la carde sont retirées. Le nombre de bandes et le chemin d'alimentation en fibres sont mesurés en sortie de carte. En outre, l'invention concerne une carde comportant une commande destinée à déterminer la garniture de tambour. La commande est conçue pour comparer la garniture de tambour déterminée pour chaque qualité de fibre avec sa propre valeur de référence spécifique et pour donner à l'opérateur des conseils de réglage optimisé de la carde en cas d'écarts entre la garniture de tambour déterminée et la valeur de référence spécifique et/ou le réglage optimisé est effectué de manière au moins partiellement indépendante à l'aide de capteurs et d'actionneurs.
EP19720830.9A 2018-05-18 2019-04-26 Procédé de détermination de la garniture de tambour au niveau d'une karde et karde équipée d'une commande associée Pending EP3794169A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018112053.2A DE102018112053A1 (de) 2018-05-18 2018-05-18 Verfahren zur Ermittlung der Trommelbelegung an einer Karde sowie Karde mit einer zugehörigen Steuerung
PCT/EP2019/060736 WO2019219352A1 (fr) 2018-05-18 2019-04-26 Procédé de détermination de la garniture de tambour au niveau d'une karde et karde équipée d'une commande associée

Publications (1)

Publication Number Publication Date
EP3794169A1 true EP3794169A1 (fr) 2021-03-24

Family

ID=66349524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19720830.9A Pending EP3794169A1 (fr) 2018-05-18 2019-04-26 Procédé de détermination de la garniture de tambour au niveau d'une karde et karde équipée d'une commande associée

Country Status (4)

Country Link
EP (1) EP3794169A1 (fr)
CN (1) CN112105766B (fr)
DE (1) DE102018112053A1 (fr)
WO (1) WO2019219352A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114990741B (zh) * 2022-07-01 2023-03-21 江苏迎阳无纺机械有限公司 一种非圆柱体锡林结构和控制方法

Family Cites Families (18)

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JPS5230630B2 (fr) * 1974-07-08 1977-08-09
CH627497A5 (de) * 1978-04-26 1982-01-15 Zellweger Uster Ag Vorrichtung zur gewinnung eines der dichte des auf dem tambour einer karde aufliegenden faserbelages entsprechenden regelsignals.
IN170275B (fr) * 1986-12-12 1992-03-07 Rieter Ag Maschf
CH684341A5 (de) * 1991-12-09 1994-08-31 Rieter Ag Maschf Kämmaschine.
EP0929703A1 (fr) * 1997-08-05 1999-07-21 Douglas, Patrick J. Carde jumelle
DE19847236B4 (de) * 1997-12-13 2010-08-26 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde zum Schärfen der Garnitur der Trommel
EP1167590A3 (fr) * 2000-06-23 2002-09-11 Maschinenfabrik Rieter Ag Mesure de la longeur de fibres
EP1167591A1 (fr) 2000-06-23 2002-01-02 Maschinenfabrik Rieter Ag Facteur de transfert
US6669818B2 (en) * 2000-06-28 2003-12-30 Metso Paper Karlstad Ab Shortened layout from dryer to reel in tissue machine
EP1215312A1 (fr) * 2000-12-18 2002-06-19 Maschinenfabrik Rieter Ag Techniques de mesure en ligne
DE10251574A1 (de) * 2002-11-06 2004-05-19 Trützschler GmbH & Co KG Vorrichtung an einer Spinnerei Vorbereitungsmaschine, z.B. Karde, Reiniger o. dgl., zur Messung von Abständen an Deckelgarnituren
CN101175969A (zh) * 2005-05-11 2008-05-07 里特机械公司 在纺织机上非接触式的测量方法及其装置
EP1880046B1 (fr) * 2005-05-11 2010-01-27 Maschinenfabrik Rieter Ag Machine de preparation de filature et procede de mesure sans contact
DE102006014419B4 (de) * 2006-03-27 2021-04-15 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, insbesondere Karde, Krempel o. dgl., zur Einstellung des Kardierabstandes
DE102009031979A1 (de) * 2009-07-06 2011-01-13 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde oder Krempel mit einer Trommel, Arbeitselementen und verstellbaren Halteelementen
DE102009032798A1 (de) * 2009-07-10 2011-01-13 Staedtler + Uhl Kg Kämmelement
CN202000042U (zh) * 2011-03-01 2011-10-05 陕西宝成航空精密制造股份有限公司 一种用于精梳机上可调节锡林定位的装置
CN103255508B (zh) * 2013-04-25 2015-11-18 江阴骏华纺织科技有限公司 一种胶原纤维梳理设备

Also Published As

Publication number Publication date
CN112105766A (zh) 2020-12-18
CN112105766B (zh) 2022-09-27
WO2019219352A1 (fr) 2019-11-21
DE102018112053A1 (de) 2019-11-21

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