EP3794169A1 - Verfahren zur ermittlung der trommelbelegung an einer karde sowie karde mit einer zugehörigen steuerung - Google Patents
Verfahren zur ermittlung der trommelbelegung an einer karde sowie karde mit einer zugehörigen steuerungInfo
- 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
Links
- 238000009960 carding Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 92
- 239000000463 material Substances 0.000 claims description 14
- 238000005259 measurement Methods 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 241000364051 Pima Species 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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
Description
Claims
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 (de) | 2018-05-18 | 2019-04-26 | Verfahren zur ermittlung der trommelbelegung an einer karde sowie karde mit einer zugehörigen steuerung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3794169A1 true EP3794169A1 (de) | 2021-03-24 |
Family
ID=66349524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19720830.9A Pending EP3794169A1 (de) | 2018-05-18 | 2019-04-26 | Verfahren zur ermittlung der trommelbelegung an einer karde sowie karde mit einer zugehörigen steuerung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3794169A1 (de) |
CN (1) | CN112105766B (de) |
DE (1) | DE102018112053A1 (de) |
WO (1) | WO2019219352A1 (de) |
Families Citing this family (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5230630B2 (de) * | 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 (de) * | 1986-12-12 | 1992-03-07 | Rieter Ag Maschf | |
CH684341A5 (de) * | 1991-12-09 | 1994-08-31 | Rieter Ag Maschf | Kämmaschine. |
TR199900740T1 (xx) * | 1997-08-05 | 1999-11-22 | Carding Specialists (Canada) Limited | İkili tarama makinesi. |
DE19847236B4 (de) * | 1997-12-13 | 2010-08-26 | TRüTZSCHLER GMBH & CO. KG | Vorrichtung an einer Karde zum Schärfen der Garnitur der Trommel |
EP1167590A3 (de) * | 2000-06-23 | 2002-09-11 | Maschinenfabrik Rieter Ag | Faserlängenmessung |
EP1167591A1 (de) | 2000-06-23 | 2002-01-02 | Maschinenfabrik Rieter Ag | Übertragungsfaktor |
US6669818B2 (en) * | 2000-06-28 | 2003-12-30 | Metso Paper Karlstad Ab | Shortened layout from dryer to reel in tissue machine |
EP1215312A1 (de) * | 2000-12-18 | 2002-06-19 | Maschinenfabrik Rieter Ag | Online Messtechnik |
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 |
EP1880046B1 (de) * | 2005-05-11 | 2010-01-27 | Maschinenfabrik Rieter Ag | Spinnereivorbereitungsmaschine sowie berührungsloses messverfahren |
WO2006119655A1 (de) * | 2005-05-11 | 2006-11-16 | Maschinenfabrik Rieter Ag | Berührungsloses messverfahren sowie vorrichtung an einer textilmaschine |
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 |
-
2018
- 2018-05-18 DE DE102018112053.2A patent/DE102018112053A1/de active Pending
-
2019
- 2019-04-26 WO PCT/EP2019/060736 patent/WO2019219352A1/de active Application Filing
- 2019-04-26 CN CN201980030421.XA patent/CN112105766B/zh active Active
- 2019-04-26 EP EP19720830.9A patent/EP3794169A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
CN112105766B (zh) | 2022-09-27 |
CN112105766A (zh) | 2020-12-18 |
WO2019219352A1 (de) | 2019-11-21 |
DE102018112053A1 (de) | 2019-11-21 |
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