EP1009870B1 - Banc d'etirage regule - Google Patents

Banc d'etirage regule Download PDF

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Publication number
EP1009870B1
EP1009870B1 EP98938866A EP98938866A EP1009870B1 EP 1009870 B1 EP1009870 B1 EP 1009870B1 EP 98938866 A EP98938866 A EP 98938866A EP 98938866 A EP98938866 A EP 98938866A EP 1009870 B1 EP1009870 B1 EP 1009870B1
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EP
European Patent Office
Prior art keywords
drafting device
drafting
sliver
speed
fibre
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.)
Expired - Lifetime
Application number
EP98938866A
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German (de)
English (en)
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EP1009870B2 (fr
EP1009870A1 (fr
Inventor
Christian Müller
Jürg Faas
Beat Näf
Christian Grieshammer
Götz Theodor GRESSER
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Priority claimed from DE1997138053 external-priority patent/DE19738053A1/de
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to DE29825170U priority Critical patent/DE29825170U1/de
Publication of EP1009870A1 publication Critical patent/EP1009870A1/fr
Publication of EP1009870B1 publication Critical patent/EP1009870B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/64—Drafting or twisting apparatus associated with doffing arrangements or with web-dividing apparatus
    • 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 a drafting system with a drive that with a Regulating device for regulating mass fluctuations of the Drafting system fed from a supply source, the Mass fluctuations of at least one assigned to the drafting system Measuring element detected and sent to a control unit
  • the card works with a constant (adjustable) delivery, i.e. the sliver runs out of the outlet at a predetermined speed.
  • the work the adjustable drafting system requires a variable (controllable) delay.
  • the Provide a large tape storage between the card spout and the Draft inlet is undesirable. It follows that the delivery speed of the Drafting system must be variable. However, this fact leads to problems in Connection with the drive for the relatively sluggish Coiler.
  • Regulating drafting device is a belt store. This is particularly the case in FIGS. 3 and 4 of the DE-OS.
  • a belt store Following the regulating drafting device is a arranged on a separate motor driven tape storage. The one from that The pair of measuring rollers in front of the regulating drafting system are also shown predetermined target values compared. The resulting signal is used for Control of the drive motor for the input roller pair of the drafting system to change the delay or to regulate thin or thick areas. simultaneously this signal is also sent to the controller for the drive of the sliver source or Card transmitted so that it can be adjusted accordingly.
  • the card however reacts much more sluggishly to such changes in speed than this is the case with the drafting system.
  • the resulting differences in the Material delivery or material take-up are carried out by the one following the card Memory balanced.
  • the memory is equipped with sensors for monitoring the Provide memory content. Based on the determined by the sensors in the tape storage Level is the drive of the sliver source (card) and the Sliver take-up device (tape storage) modified accordingly to the To keep the level of the tape storage approximately constant. This adjustment However, these two drives again produce additional differences, especially since Elements of the card (e.g. drum) in contrast to the elements of the tape storage have different inertias.
  • each card a memory is connected downstream and the card slivers delivered by the individual stores after passing through a drafting system, it is fed to a common belt deposit.
  • This object is achieved by adding at least one further to the drafting system Means is assigned that is suitable for a necessary control intervention in the Draft drive to maintain a predetermined setpoint before or during of the control intervention and to influence the basic speed of the To use the drafting system.
  • the further means is preferably suitable for differences between the Delivery speed of the source and the entry speed into the drafting system to capture.
  • the difference in speed results from the change in Speed of the regulated drafting roller.
  • the further means can also be suitable for long-term fluctuations in mass with reference to a predetermined target value (target).
  • the further means is preferably a sliver storage device, which corresponds to corresponding Monitoring elements or sensors can be equipped. So that can Differences in the conveyor speed of the sliver, which are caused by the variable and regulated take-off speed of the input roller pair of The drafting unit is based on the variable filling level of the storage be recognized and an intervention in the basic speed of the drafting system be made. A pilot control is thus carried out, which guarantees that the memory can be kept at a low level.
  • the sliver storage can be listed as a sag storage, the Sag of the sliver loop can be done continuously or discontinuously.
  • the textile processing unit can be a card, the one at the outlet of the Card mounted sensor at the same time for long-term regulation of the feeding device the card can be used.
  • the further means can also consist of a sensor device for scanning the Speed of the regulated pair of rollers of the drafting system and at least one Drafting system upstream and constantly rotating conveyor roller pair for the Fiber mass, with the long-term over the determined speed ratio Mass deviation is determined and corresponding interventions in the Basic speed of the drafting system is made.
  • the supply source consist of at least two there are cards connected in series
  • the drive of the second card via the controller tracks the drive of the first card and that of the each carded fiber material is detected by a sensor and that Mixed signal formed by both sensors to influence the base speed of the Drafting unit is used.
  • the sliver storage can advantageously be equipped with a monitoring device be provided.
  • the monitoring device of the sliver storage of the second, tracked Card can be used to override the control coupling of the Drives of both cards are used. This makes it possible for short-term Compensate for drifting in the production of the second card. That is, the The drive of the take-off roller of the second card is readjusted until the Sliver loop in the sliver storage again within predetermined Tolerance limits.
  • This override can be temporary, that is in the event of a longer deviation, it is assumed that there is an error, so that the Machines are shut down for inspection.
  • Sag sensors can be used as monitoring sensors the sag of the slivers in the storage continuously or discontinuously monitor.
  • the drafting unit be a band storage is connected downstream and the draft of the drafting unit is so high that it is ensured that the degree of fiber orientation in the sliver formed significantly increased, or the proportion of hook fibers is significantly reduced.
  • Information about stretching before laying down can be found in the book "Shortened Cotton mill - Prof. Dr. Ing. Walther Wegener - Mönchengladbach 1965 "to remove. This will be discussed in more detail below.
  • the delay is greater than 2, preferably is between 3 and 6. This should also ensure that a sliver is formed with a high quality fiber structure, which is particularly in subsequent processing stages has a positive effect.
  • the tape-forming device should preferably be one Produce sliver with a relatively low fineness (great strength), for example at least 8 ktex and preferably 10 ktex or even more (e.g. 12 ktex).
  • the is preferably used with a relatively large working width Card worked, for example larger than 1200 mm. This can be done with a machine according to our EP patent application No. 866 153. The total content the mentioned EP application is hereby an integral part of the present description called.
  • the belt fineness after the drafting system can be, for example, 3 to 5 ktex.
  • the Delivery speed at the exit of the drafting system is, for example, more than 400 m / min.
  • Such a drafting system is preferably on the belt deposit provided (cf. the specialist book "Shortened Cotton Spinning Mill, page 72 and that mentioned CS patent 98 939), so that the sliver supplied by the drafting system stored as quickly as possible (without having to go through a long transport route) can be.
  • FIG. 1 shows schematically the representation of a card 1, which passes through a feed shaft 3 and is fed with fiber material via a subsequent feed roller 2.
  • the Fiber material is taken up by the drum and in cooperation with Carding elements not shown processed.
  • the carded material is from a Pickup roller 5 removed from the reel 4 and a schematic indicated trigger device 10 transferred. from this trigger device 10 the sliver 6 formed there arrives in the conveying direction F.
  • Sag memory 14, the input roller pairs 15 and with Output roller pairs 16 is equipped.
  • the sag (sliver loop FS) is scanned by a bar sensor 20 which is arranged one above the other in a row Sensors is provided. This makes it possible to position the sliver loop FS in any position to grasp exactly.
  • the sensor signals are sent via line 21 to a control unit S delivered.
  • the sliver 6 released from the storage 14 is fed through a measuring element 70 performed, which is designed in the form of a pair of sensing rollers.
  • the measurement result of the Measuring element 70 is delivered to control unit S via line 71.
  • the sliver is drawn into the drafting unit 30 performed with the pairs of rollers 24 and 25, in which it is warped.
  • the basic drive of the drafting unit 30 takes place from the motor M2, via the Line 40 is controlled by the control unit S.
  • the motor M1 of the take-off roller 5 is used here as a guide motor (Master) to which the motor M2 is at its basic speed as a "slave" is tracked to maintain predetermined drive conditions.
  • This Base speed of motor M2 can be overridden by the signals from sensor 20 which will be discussed in more detail below.
  • the motor M2 drives a gear 32, from which a drive path 35 to the Output rollers 25 and a further drive path 36 to a regulating gear 33 (Differential) leads.
  • This control gear 33 is the drive path 37 Input roller pair 24 of the drafting unit 30 driven.
  • control interventions which are based on the evaluation of the signals of the measuring element 70 a predefined setpoint for regulating mass fluctuations (short and Long-wave) are necessary, are carried out by a control motor M3, which the line 38 is controlled by the control unit S and regulating in the Control gear 33 engages. This causes the distortion between the pairs of rollers 24 and 25 changed and mass fluctuations in the sliver compensated.
  • the pair of measuring rollers 70 are driven via the drive connection 68, which is removed from the drive path 37. This is the synchronism between the Input roller pair 24 and the measuring roller pair 70 determined.
  • the change in the speed of the input roller pair 24 counteract backwards the conveying direction F and are in the memory 14 by changing the Loop position FS caught.
  • the loop position can be scanned in Steps are taken, which means that when there is a certain amount of change Control unit S overrides the basic speed of the drive motor M2.
  • Control unit S By lowering or increasing the base speed, the effect of the Speed change through the control intervention, especially when regulating long-term fluctuations in mass compensated.
  • the memory can therefore be set to one minimal size.
  • the sag decreases the loop FS with the same delivery of the take-off roller 5. This is done by detects the sensor 20 and reduces the basic speed of the motor M2 accordingly. This reduces the speed of the input rollers while the changed one remains the same Distortion ratio in the drafting system 30 also decreases, whereby a return of the Sliver loop is done to its original location.
  • the drive is the following Tape storage 60 is firmly coupled, specifically via the drive path 42, that of the transmission 32 is removed and leads to a transmission 50.
  • the sliver is in a can via the calender rollers 47 and the funnel wheel 48 K stored in the form of a loop, the can K over during the laying process the can plate 49 is rotated.
  • a device is shown in FIG. 2, following the extraction device 10 is a pair of measuring rollers 55 is arranged, which via the line 56 with the Control unit S is connected.
  • This measuring element 55 essentially records the long-term fluctuations in mass (drifting of the number of the sliver).
  • a control signal is generated in the control device, which for Overriding the basic speed of motor M2 is used. This can to react early to a subsequent control intervention in the drafting system 30 to keep the storage at a constant level of the sliver loop.
  • the memory 14 is only provided with two sensors S1 and S2, which only then respond when the sliver loop FS is outside of a predetermined tolerance range moves. Usually there is a malfunction and the machine (system) is switched off.
  • the signal of the measuring element 55 is in addition to the regulation of the drive motor MS of the feed roller of card 1 used to regulate the drift of the number at the card.
  • the Motor MS is controlled by the control unit via line 53.
  • Fig. 3 shows a further embodiment, wherein a pair of discharge rollers 11 after the trigger device 10 is arranged. The speed of this pair of rollers is monitored by a sensor 12. Likewise, the pair of feed rollers 24 is the Drafting device 30 is assigned a speed sensor 62 which is connected via line 63 to the Control unit S is connected.
  • the execution of the memory 14 corresponds to the execution, which is already in Embodiment of Figure 2 has been described.
  • the compensation of the control interventions essentially relates to the Overriding the basic speed of the drafting system 30 only to the long-term Mass fluctuations and not on the short-term, since these fluctuations do not ins Falling weight and usually self-compensating over time.
  • FIG. 4 An embodiment is shown in FIG. 4, two cards 1 a, 1 b in parallel work side by side.
  • the cards are also provided with feed rollers 6a, 6b, Briseur 3a, 3b, drum 2a, 2b and take-off roller 4a, 4b provided.
  • the drive of the Take-off rollers 4a and 4b is indicated schematically at 75 and 46, respectively, which over a control line L8 or L9 are connected to the control unit S. Is also the Drive 20a or 20b of the feed rollers 6a or 6b via the control lines L7 'or L7 "connected to the control unit S.
  • the slivers Fa and Fb released by the respective card 1a or 1b are passed through sensors 10a and 10b, respectively, in order to sense their mass.
  • the fiber tapes Fa and Fb then each come into one Sag memory 11a and 11b. are in these memories for sampling the Level, or the sag of the sliver loops sensors O1, U1 and O2, U2 attached.
  • the sensors U1, U2 sense an upper one and the sensors U1, U2 from a lower position of the sliver loop. Between the respective top Sensor and the lower sensor is within the tolerance limit the sliver loop can move freely without triggering a control intervention. However, it would also be conceivable to provide a sensor with continuous scanning.
  • the sensors O1, U1 and, O2, U2 are connected via lines L10 and L11 to the Control unit S connected.
  • the two slivers Fa and Fb are brought together to form a single sliver FZ.
  • This sliver FZ is then passed over a sensor 17, which carries out the scanning of mass fluctuations in the sliver FZ presented.
  • the fiber sliver FZ sensed by the sensor 17 then arrives in the regulating drafting device 83.
  • the values determined by the sensor 17 are output to the control unit S via the line L3.
  • the drafting system 83 consists of three series connected Roller pairs 84, 85 and 86, the input roller pair 84 for adjustment driven by fluctuations in mass in the sliver, the speed of which can be varied becomes.
  • the delivery roller pair 86 is driven by a main motor 65 and a subsequent one Gear 26 driven at a constant speed.
  • the middle pair of rollers 85 is also included driven at a constant speed and exhibits a constant Speed ratio to the following delivery rollers 86.
  • Speed ratio is a constant warping of the sliver between the Roll pairs 85 and 86 performed.
  • the motor 85 is over a Frequency converter 84 and controlled by the control unit S via the line L6.
  • the differential 28 drive can by a control motor 29, the frequency converter, not shown and the line L5 is controlled via the control unit S, can be overridden. This override takes place on the basis of the signals emitted by the sensor 17 can be compared with an actual value stored in the control unit S.
  • a belt storage unit KA is arranged at which the sliver F1 delivered by the drafting system via a Calender roller pair 34 and a hopper wheel T is placed in a can K.
  • the Kanne K stands on a driven can plate (not shown) that the Jug K rotated during the filling process.
  • the can plate, the Calender rolls 34 and the hopper wheel T are driven by a drive path 98 Gearbox 96 driven.
  • the transmission 96 receives its drive via the schematic Shown fixed drive connection 95 of the transmission 26, which from the main motor 65th is driven. It can be seen from this that the delivery roller pair 86 with the Drive elements of the tape storage KA directly to each other via the gear 26 are coupled.
  • the signals from sensors 10a and 10b in FIG Control unit S generates a mixed signal MS, which is compared with a target value.
  • the control signal SS resulting from this comparison is used to influence the set base speed of the motor 65 used.
  • the basic speed of the Drafting unit matched to the speed of the take-off roller 4a or tracked.
  • the basic speed is only overridden when the operating speed is reached Approved.
  • the slivers Fa and Fb released by the cards 1a and 1b are detected by sensors 10a and 10b and the corresponding actual values (Ground) to the control unit, where a mixed signal MS is generated.
  • This Mixed signal is compared with a target signal "target" and a control signal generated if the actual value deviates from the setpoint.
  • This control signal goes to one Frequency converter 94, which changes the speed of the motor 65 via the line L6 and thus the basic speed of the drafting unit and also the belt reel KA.
  • the slivers Fa and Fb are in the Sag memory 11a and 11b transferred, in which it from the sensors O1, O2, or U1, U2 can be scanned.
  • the respective sliver loop is located within the area between the upper and lower sensor, so no additional control pulse executed.
  • the sensor U2 indicates that the sliver loop of the sliver Fb is too large, the direct tracking of the drive 46 of the take-off roller 4b from the drive 75, the "master" is overridden and the speed of the roller 4b is reduced.
  • the situation is similar with the monitoring in the memory 11a Dodge the sliver loop of the sliver Fa outside of the Tolerance range between the sensors U1 and O1 and over a predetermined Time the system is also switched off because a fault is assumed can.
  • the slivers leaving the respective storage are in a before subsequent measuring element 17 to a common sliver FZ merged.
  • the mass fluctuations are measured in the measuring element and via line L3 delivered to the control unit S.
  • a target-actual value comparison in the Control unit sends a corresponding signal via line L5 to the control motor 29 delivered, the speed of the input rollers 84 to the control gear 28 Adjustment of the mass fluctuation changes. This changes the delay between the roller pairs 84 and 85. The distortion between the roller pairs 85 and 86 remains constant.
  • the fiber band F1 warped in this way is delivered by the drafting unit and via the calender rolls 34 and the funnel wheel T in a can K loop-shaped stored.
  • the total distortion of the Drafting unit 83 is selected to be greater than 3, since this results in the removal process of the fiber material on the card, drag hooks created during the drafting process can be partially resolved, which is beneficial to subsequent Processing processes.
  • the Sensors 10a, 10b drift the mass m outside of a predetermined Tolerance range To determined.
  • the process would be as follows: the lower mass presented to the drafting system 83 must be the delay between the Roller pairs 84 and 85 are reduced. That is, via the control motor 29 and differential 28 increases the speed of input roller pair 84, whereby the distortion between the roller pairs 84 and 85 is simultaneously reduced is because the speed of the pair of rollers 85 remains constant.
  • the Speed of the input roller pair 84 is also the retraction speed of the delivered sliver F reduced. Since the card or the take-up roller with is operated at a constant speed.
  • the Tape storage 11 a, 11 b only need a sufficiently large recording capacity exhibit. However, these mass deviations occur in regular or irregular distances essentially in one direction, so the existing capacity of the buffer in the tape store 11a, 11b soon at the border.
  • the speed change of the roller 84 is approximately compensated for, that is to say the whole
  • the speed level of the drafting system 83 is determined by the drive link shut down evenly so that despite changing the speed ratio between the pairs of rollers 84 and 85, the now existing speed of the Input roller pair is about the same level that before There has been a regular intervention.
  • This enables the feed speed of the sliver FZ even after a control intervention and the Changes in the speed ratio remains at a constant level.
  • the sensors U1, 01, U2, 02 serve as additional monitoring aid.
  • the curve of the roller 84 was based on the representation of the Rashes caused by the short-wave adjustments are not used. These short-wave adjustments usually oscillate around the one shown Curve up or down.
  • the speed of the drive elements is also reduced the tape storage is lowered synchronously, whereby the speed ratio between the Delivery roller 86 and the calender rollers 34 is maintained.
  • This balance The long-wave drift of the sliver can be relatively gentle and slow be carried out so that the tracking of the relatively sluggish elements of the Tape storage KA poses no problems.
  • the invention is concerned with improving the Degree of fiber orientation or the reduction in the number of fiber hooks (Fiber hook) in the card sliver.
  • card sliver means here Sliver that is delivered to a sliver reel following the card.
  • JP OS 51-2 from 1976; user Fuji Seiko KK describes a drafting device on the card with a drawing performance in an extent of 1.1 to 2 times.
  • the second aspect of the invention provides a method of forming a card sliver before, after which a card web is combined into a sliver, the sliver stretched and the stretched tape is deposited, characterized in that the Sliver is subjected to such a high warping during stretching that the Degree of fiber orientation significantly increased or the proportion of hook fibers significantly is reduced.
  • This aspect of the invention provides a corresponding device with a Drafting device for use between the belt-forming device and the belt storage a card, characterized in that the drafting system has such a high delay can produce that the degree of fiber orientation in the band is increased, or the proportion of hook fibers is significantly reduced.
  • the stretching of the sliver upstream of the laying down can (e.g. by means of the drafting system mentioned) can be used to increase the percentage of Drag hooks (cf. the specialist book "Shortened spinning mill", page 90) significantly to reduce.
  • the sliver it is advisable for the sliver to have a draft of more than 2 and preferably subject to more than 3. If possible, there should be a delay of 5 to 6 be used, which is rarely between the card spout and the Subsequent sliver storage without disturbances in the running behavior of the sliver can be realized.
  • the tape-forming device should preferably be one Produce sliver with a relatively low fineness (great strength), e.g. at least 8 ktex and preferably 10 ktex or even more (e.g. 12 ktex).
  • the is preferably used with a relatively large working width Card worked, e.g. larger than 1200 mm. This can be done using a machine of our EP patent application No. 98 810 088.9 can be realized.
  • the total content of the mentioned EP application is hereby an integral part of the present description called.
  • the EP application is expected on 23.09.1998 can be published under No. 866 153.
  • the belt fineness after the drafting system can e.g. 3 to 5 ktex.
  • the Delivery speed at the exit of the drafting system is, for example, more than 400 m / min.
  • Such a drafting system is preferably on the belt deposit provided (cf. the specialist book "Shortened Cotton Spinning Mill, page 72 and that mentioned CS patent 98 939), so that the sliver supplied by the drafting system stored as quickly as possible (without having to go through a long transport route) can be.
  • the second aspect of the invention accordingly provides a method according to which Carding fleece combined into a sliver and the band with a delay of at least 2 and preferably more than 3 is stretched before depositing.
  • the invention sees a card with one in this aspect sliver-forming device, a tape storage and one between the tape-forming device and the tape storage switched on drafting system, wherein the drafting system to produce a draft higher than 2 and preferably higher than 3 is designed.
  • the drafting system can be formed as an equalization unit, i.e. it can be arranged to generate a controllably variable delay, but not is essential to the invention. Changes in default become corresponding changes the degree of orientation.
  • the card itself can therefore be conveniently as Equalization unit can be designed (e.g. according to EP-A-271 115), the subsequent drafting system is designed to increase the degree of fiber orientation.
  • a regulated drafting system preferably has a total warpage GV (between the inlet and outlet roller pairs) of more than 2 and preferably 3 to 6. If the drafting system has a draft zone, what is not essential to the invention, the average delay in the regulated (variable) Delay field e.g. 2.5, the delay in the other (fixed) Delay field e.g. be approximately 1.2.
  • the "early default" (in the first default field) can e.g. approx. 1.1 to 1.5 and the "main delay" (in the second, variable delay field) approx. 2.0 to 4.
  • the sliver thickness at the outlet of the drafting system is preferably 3 to 5 ktex, for example 3.5 ktex.
  • the drafting system is preferably directly above the Hopper wheel of a band storage arranged, for example as in DE-Gbm-296 22 923 is shown.
  • the sliver deposited in the jug can be sent directly to the OE spinning machine, for example according to EP-A-627 509.
  • the second aspect of the invention is preferably (but not necessarily) in Combination with the other features of the invention described in the introduction used.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (23)

  1. Dispositif d'étirage (30) avec un entraínement (M2), et un système de régulation (M3, M33) pour le réglage parfait de fluctuations de masses d'une masse de ressort (6) amenée au dispositif d'étirage par une source de livraison (1), caractérisé en ce qu'au dispositif d'étirage (30) est attribué au moins un moyen (14, 55, 12, 62) pour influer sur le régime de base du dispositif d'étirage.
  2. Dispositif d'étirage (30) selon la revendication 1, caractérisé en ce que le moyen (14, 55, 12, 62) est approprié pour détecter une intervention de réglage dans l'entraínement du dispositif d'étirage (33) pour le respect d'une valeur de consigne prédéfinie avant ou pendant l'intervention de réglage.
  3. Dispositif d'étirage (30) selon la revendication 1 ou 2, caractérisé en ce que le moyen (12, 62) est approprié pour détecter des différences entre la vitesse de livraison de la source (1) et la vitesse d'entrée dans le dispositif d'étirage (30).
  4. Dispositif d'étirage (30) selon la revendication 1 ou 2, caractérisé en ce que le moyen (55) est approprié pour détecter des fluctuations de masse de longue durée par rapport à une valeur prescrite (prévu) prédéfinie.
  5. Dispositif d'étirage selon la revendication 1, 2 ou 3, caractérisé en ce que le moyen est un magasin de ruban de fibres (14, 20).
  6. Dispositif d'étirage selon la revendication 5, caractérisé en ce que le magasin de ruban de fibres (14) est conçu comme un magasin courbé.
  7. Dispositif d'étirage selon la revendication 4, caractérisé en ce que le moyen est formé par un capteur (55) supplémentaire pour la détection de la masse fibreuse, qui est monté en amont du dispositif d'étirage (30).
  8. Dispositif d'étirage selon la revendication 7, caractérisé en ce que le capteur (55) est disposé à la sortie (10) d'une unité (1) traitant du matériau textile placé en amont du dispositif d'étirage (30).
  9. Dispositif d'étirage selon la revendication 8, caractérisé en ce que l'unité traitant du textile est une carde (1).
  10. Dispositif d'étirage selon la revendication 9, caractérisé en ce que le capteur (55) st utilisé en supplément pour la réglage de longue durée de l'appareil d'alimentation (2) de la carde (1).
  11. Dispositif d'étirage selon la revendication 3, caractérisé en ce que le moyen est constitué d'un dispositif capteur (62) pour le balayage du régime de la paire de rouleaux (24) régulé du dispositif d'étirage (30) et d'au moins une paire de rouleaux de transport (11) monté en amont du dispositif d'étirage pour la masse de fibre (6), l'écart de masse à long terme étant calculé par l'intermédiaire du rapport de régime calculé.
  12. Dispositif d'étirage selon la revendication 4, caractérisé en ce que la source de livraison comprend au moins deux cardes (1a, 1b) montées en parallèle, l'entraínement de la carde (46) pour la sortie (4b) de la deuxième carde (1b) étant asservi par une commande (S) à l'entraínement (75) pour la sortie (4a) de la première carde (1a) et la marchandise fibreuse (Fa, Fb) débitée par la carde respective étant détectée par respectivement un capteur (10a, 10b) et un signal mixte (MS) formé par les deux capteurs étant utilisé pour influer sur le régime de base du dispositif d'étirage (83).
  13. Dispositif d'étirage selon la revendication 12, caractérisé en ce qu'un magasin de bande de fibres (11a, 11b) est disposé entre le capteur (10a, 10b) respectif et le dispositif d'étirage (83) placé en aval avec la marchandise fibreuse (Fa, Fb) respective.
  14. Dispositif d'étirage selon la revendication 13, caractérisé en ce que le magasin de bande de fibres (11a, 11b) est pourvu d'un système de contrôle (O1, U1, O2).
  15. Dispositif d'étirage selon la revendication 14, caractérisé en ce que les systèmes de contrôle sont dotés de capteurs (O1, U1, O2, U2) pour le contrôle du fléchissement de la marchandise fibreuse (Fa, Fb) se trouvant dans le magasin (11a, 11b).
  16. Dispositif d'étirage selon l'une quelconque des revendications 12 à 15, caractérisé en ce que le couplage au niveau de la commande des entraínements (75, 46) de la première carde et de la deuxième carde peut être surmodulé par le système de contrôle (U2, O2) du magasin de bande de fibres (11b) de la deuxième carde (1b).
  17. Dispositif d'étirage selon l'une quelconque des revendications 12 à 16, caractérisé en ce que la marchandise fibreuse (Fa, Fb) est réunie avant l'entrée dans le dispositif d'étirage (83).
  18. Dispositif d'étirage par exemple un dispositif d'étirage selon l'une quelconque des revendications 1 à 17, caractérisé en ce qu'un récepteur de bande (KA) est placé en aval du dispositif d'étirage (83, 30) et la déformation de l'unité d'étirage est tellement élevée que le degré d'orientation de fibre dans la bande est ainsi sensiblement amélioré et la fraction des fibres à crochets est sensiblement réduite.
  19. Dispositif d'étirage selon la revendication 18, caractérisé en ce que le dispositif d'étirage (30, 83) peut générer une déformation globale de plus de 2, de préférence plus de 3 et par exemple de 3 à 6.
  20. Dispositif d'étirage selon l'une quelconque des revendications 18 à 19, caractérisé en ce que la source de livraison (1) est formée d'au moins une carde et que l'appareil formant des fibres est conçu pour générer une bande de fibres avec une épaisseur de bande supérieure à 8 ktex, par exemple 10 jusqu'à 12 ktex.
  21. Dispositif d'étirage selon la revendication 20, caractérisé en ce que la carde (1) présente une largeur de travail supérieure à 1200 mm, par exemple 1300 jusqu'à 1500 mm.
  22. Dispositif d'étirage selon l'une quelconque des revendications 1 à 21, caractérisé en ce que le dispositif d'étirage (30, 83) présente une vitesse de livraison supérieure à 400 m/min.
  23. Dispositif d'étirage selon l'une quelconque des revendications 1 à 22, caractérisé en ce que le dispositif d'étirage (30, 83) est prévu sur le récepteur de bande (KA).
EP98938866A 1997-09-01 1998-08-31 Banc d'etirage regule Expired - Lifetime EP1009870B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29825170U DE29825170U1 (de) 1997-09-01 1998-08-31 Reguliertes Streckwerk

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE1997138053 DE19738053A1 (de) 1997-09-01 1997-09-01 Karde mit Bandspeicher und Regulierstreckwerk
DE19738053 1997-09-01
CH271197 1997-11-24
CH271197 1997-11-24
CH156098 1998-07-23
CH156098 1998-07-23
PCT/IB1998/001357 WO1999011847A1 (fr) 1997-09-01 1998-08-31 Banc d'etirage regule

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EP1009870A1 EP1009870A1 (fr) 2000-06-21
EP1009870B1 true EP1009870B1 (fr) 2002-07-03
EP1009870B2 EP1009870B2 (fr) 2008-09-17

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EP (1) EP1009870B2 (fr)
DE (1) DE59804686D1 (fr)
TR (1) TR200000962T2 (fr)
WO (1) WO1999011847A1 (fr)

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Publication number Publication date
TR200000962T2 (tr) 2001-07-23
DE59804686D1 (de) 2002-08-08
US6286188B1 (en) 2001-09-11
EP1009870B2 (fr) 2008-09-17
WO1999011847A1 (fr) 1999-03-11
EP1009870A1 (fr) 2000-06-21

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