WO2020099980A1 - Dispositif de nettoyage d'une peigneuse et procédé - Google Patents

Dispositif de nettoyage d'une peigneuse et procédé Download PDF

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Publication number
WO2020099980A1
WO2020099980A1 PCT/IB2019/059483 IB2019059483W WO2020099980A1 WO 2020099980 A1 WO2020099980 A1 WO 2020099980A1 IB 2019059483 W IB2019059483 W IB 2019059483W WO 2020099980 A1 WO2020099980 A1 WO 2020099980A1
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WIPO (PCT)
Prior art keywords
speed
brush
drive
comb
motor
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Application number
PCT/IB2019/059483
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German (de)
English (en)
Inventor
Daniel Bommer
Original Assignee
Maschinenfabrik Rieter Ag
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
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Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Publication of WO2020099980A1 publication Critical patent/WO2020099980A1/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
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/22—Arrangements for removing, or disposing of, noil or waste
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/26—Driving arrangements

Definitions

  • the present invention relates to a cleaning device of a combing machine, with a brush for cleaning a comb segment of a round comb, a first drive for driving the brush via a first gear stage, a second drive for driving the round comb via a second gear stage, and a control unit for independently controlling the first drive for setting the brush to a brush normal speed and the second drive for setting the round comb to a round comb normal speed.
  • a cotton end also called fiber beard
  • a pliers unit short pliers
  • the short fibers not pinched by the pliers unit are combed out of the fiber beard by the combing segment.
  • other components such as dirt, nits and shell parts, are combed out during this combing process.
  • the combed out components are transported down over the combing segment, where they reach an area in which bristles of a brush engage in the enveloping circle of the combing segment.
  • the direction of rotation of the brush is usually opposite to the direction of rotation of the round comb.
  • the combed components located in the combing segment are stripped off via the bristles of the brush and guided to a suction channel under the action of a suction effect.
  • the cleaning effect is achieved by the different peripheral speeds between the round comb and the brush. This means that the bristles of the brush have a higher peripheral speed than the combing segment of the round comb, which causes the fixed components to freeze.
  • the brush is provided with its own electric motor drive, which can be varied in speed to change the cleaning effect.
  • the brush gear stage and the circular comb gear stage are already pre-defined in the case of conventional combers and designed for fiber masses with a length in the short stack area. Accordingly, the brush gear stage and the round comb gear stage each limit the speed transmission from the respective electromotive drive to the brush or the round comb.
  • the gear stage in question is provided with a constantly large output-side pulley, which is connected via a belt to an exchangeable drive-side belt pulley and the respective pulley-gear ratio trains.
  • a constantly large output-side pulley which is connected via a belt to an exchangeable drive-side belt pulley and the respective pulley-gear ratio trains.
  • For the adjustment of the speed of the brush are usually four drive pulleys and for adjusting the speed of the round comb are usually seven drive pulleys interchangeable.
  • the round comb speed is to be set as a function of the fiber length, with long fibers with higher fiber mass, the round comb speed slower and with short fibers the round comb speed must be set faster in order to achieve the desired combing effect the circular comb. Accordingly, the pulley-gear ratio of the circular comb gear must be set to the appropriate fiber length by replacing the corresponding drive pulley. In this context, however, the problem arises that although the round comb speed runs slowly for higher fiber masses, i.e. long fibers, the brush speed must also be adjusted, i.e.
  • the brushing speed of the conventional comber has to be set higher than in normal operation is the situation that fibers with a higher degree of soiling have to be combed out.
  • the fiber mass is provided with liquid thaw, that this sticky fiber mass can more easily settle in the comb segment of the circular comb. Accordingly, the pulley transmission ratio of the brush gear must be set to a smaller value in this situation compared to the setting at the factory.
  • the setting of the speed of the brush during the entire operation of the combing machine is many times higher than the speed of the circular comb, in particular when combing out the higher fiber mass or with strongly bonded fiber mass, however, disadvantageously leads to wear and tear on the bristles of the brush, in that the interaction of the bristles with the clothing teeth of the comb segment of the circular comb causes mechanical abrasion, which leads to the bristles becoming such shorten so that they can no longer penetrate between the clothing teeth in order to remove the unwanted deposits from the combing segment.
  • the radial distance between a brush shaft and a round comb shaft can be adjusted using special adjustment devices, such as from DD 297 672 A5 known to be reduced.
  • a cleaning device for a comber in which a first drive for a brush and a second drive for a circular comb are provided. Between the respective drive and the brush or the round comb, a gear stage is provided in each case, which limits the corresponding drive in its speed transmission via a corresponding pulley-gear ratio.
  • the brush rotates faster than the round comb, and it is a specific cleaning of the comb segment of the round Comb provided especially during the start-up and shutdown of the combing machine, in order to have clean round combs, especially at the beginning of the combing process.
  • the circular comb motor is controlled by a relay circuit for a defined period of about 2 to 5 seconds to a cleaning speed of about 0.04 m / s to 0.07 m / s, while the brush is constantly at a maximum brush speed is driven by about 5.2 m / s. Due to this large difference in speed between the brush and the round comb, the desired higher cleaning effect is achieved when starting up and shutting down the combing machine in order to constantly maintain the mode of operation of the round comb.
  • a combing machine is known from EP 3 128 052 A1, in which a first drive for a brush and a second drive for a circular comb are controlled independently of one another via a control unit.
  • the controller is designed to control the two drives in such a way that the brush and the circular comb can be driven at a variable speed.
  • a gear stage is provided in each case, which limits the corresponding drive in its speed transmission via a corresponding pulley-transmission ratio.
  • the purpose of the cleaning device according to EP 3 128 052 A1 is in particular to eliminate the disadvantages from US Pat. No. 3,735,446, where the fleece formation due to air currents is disturbed by the specific cleaning during start-up and shutdown. In order to solve this problem, it is proposed in EP 3 128 052 to set the brush speed lower than in normal operation, in particular when starting up and shutting down the circular comb.
  • the object of the present invention is therefore to create a cleaning device for a comber and a method which enables time-optimized cleaning of the comb segments of the round combs for any type of fiber mass during the entire operation of the comber, with the risk of wear and tear on the bristles the brush is considerably minimized and the removal of round combs for manual cleaning is no longer necessary.
  • a cleaning device of a combing machine is proposed, with a brush for cleaning a comb segment of a round comb, a first drive for driving the brush via a first gear stage, a second drive for driving the round comb via a second gear stage, and a control unit for independent control of the first drive for setting the brush to a brush normal speed and the second drive for setting the round comb to a round comb normal speed.
  • At least the first gear stage during the entire operation of the comber is provided with a first maximum pulley-transmission ratio, which is designed such that the brush drives continuously from zero to the normal brush speed to an absolute via the first drive Maximum brushing speed and vice versa is adjustable.
  • a first maximum pulley / gear ratio it is meant that a constant-sized pulley on the output side is connected via a belt to a pulley on the drive side, the drive-side pulley being designed such that the first pulley ratio -The ratio of the first drive in terms of a speed transmission from a brush motor to the brush in no way limited. Accordingly, a constantly large drive-side pulley can be used because the first drive is designed to continuously drive the brush speed from zero to the normal brush speed to the absolute maximum brush speed and vice versa.
  • the first drive is designed according to the invention in such a way that the brush speed can be continuously driven continuously in the positive as well as in the negative direction of rotation, without the first gear stage limiting this.
  • the cleaning device according to the invention can thus optimally set the brush speed via the first drive and the first gear stage, regardless of the fiber mass to be combed. This situation is clearly in contrast to the known prior art, where four interchangeable drive-side pulleys must be used to set the desired speed for the brush as a function of the ever larger or sticky fiber mass to be combed out.
  • the absolute maximum brush speed is that brush speed which is controlled by the first drive via the control unit and which can be freely adjusted to a maximum by the first gear stage. In this way, it is possible to respond very precisely to changes in the speed of the round comb during the operation of the combing machine, in particular the undesirable deposits in the comb segment of the round comb being monitored very closely by the control unit and, if necessary, via the first drive and the first gear stage Brush speed sets.
  • Another advantage of the device according to the invention is the fine adjustment of the brush speed as a function of the change in the circular comb speed, as a result of which a relative speed between the brush speed and the circular comb speed remains at least approximately constant over the entire period of operation of the combing machine , with the advantageous effect that the risk of wear of the bristles of the brush is considerably minimized.
  • the wear of the bristles of the brush occurs particularly when the brush speed is many times higher than the round comb speed and, accordingly, the relative speed is higher than in normal operation ex works.
  • a monitoring device as known from EP 3 212 830 A1, can be used, sensors measuring the mass of combed components located within the combing segment and transmitting them to the control unit, so that the control unit can use them to base the brush Controls speed via the first drive and the first gear stage as well as the circular comb speed via the second drive and the second gear stage.
  • the first maximum pulley transmission ratio of the first gear stage for the absolute maximum brush speed at a nominal motor speed of 3000 rpm has a value of approximately 0.60. Due to the demanded value for the first maximum pulley transmission ratio, the control unit can continuously - without restriction - continuously control the brush speed from zero to the normal brush speed via the first drive in conjunction with the first gear Set maximum brush speed and vice versa.
  • the brush can particularly preferably be set continuously from zero above the normal brush speed at approximately 1200 rpm to the absolute maximum brush speed of approximately 2300 rpm and vice versa.
  • the control unit can easily use the first drive and the first gear stage to produce any type of fiber mass that has to be combed out of the circular comb and partially stipulates in the combing segment to clean with the appropriate brush.
  • the belt pulley ratio for a brush gear stage depending on the setting of the desired speed of the brush, between 1, 16 and 0.68 (at 50 Hz) or between 1, 39 and 0.82 (at 60 Hz) must be set to four discrete brush To be able to set speeds of 1200 rpm, 1440 rpm, 1700 rpm and 2030 rpm.
  • the constant large output pulley has a diameter of 1 10 mm.
  • the first drive according to the invention allows the desired brush speed to be set continuously, this process being independent of the mains frequency.
  • the second gear stage is preferably provided with a second maximum pulley transmission ratio, which is designed such that the circular comb continuously from zero via the circular comb normal speed to an absolute maximum circular comb speed via the second drive and vice versa is adjustable.
  • a second maximum pulley transmission ratio it is meant that an output-side, constantly large pulley is connected to a drive-side pulley by means of a belt, the drive-side pulley being designed such that the second pulley transmission ratio Ratio of the second drive in terms of a speed transmission from a circular comb motor to the circular comb is in no way limited.
  • a constantly large drive-side belt pulley can be used because the second drive is designed to continuously drive the round comb speed from zero to the round comb normal speed up to the absolute maximum round comb speed and vice versa.
  • the second drive is designed such that the circular comb speed can be driven continuously in the positive as well as in the negative direction of rotation, without the second gear stage limiting this.
  • the cleaning device according to the invention regardless of the fiber mass to be combed, optimally adjust the circular comb speed via the second drive and the second gear stage.
  • Combing machine can be changed by replacing the drive pulley, the pulley gear ratio based on the constant multi-stage gear ratio ex works.
  • the second maximum pulley / gear ratio of the second gear stage for the absolute maximum circular comb speed at a nominal engine speed of 3000 rpm has a value of approximately 0.85. Due to the claimed value for the second maximum pulley ratio, the control unit can continuously set the rotary comb speed from zero to an absolute maximum circular comb speed and vice versa via the second drive in conjunction with the second gear stage.
  • the circular comb can particularly preferably be set continuously from zero via the circular comb normal speed of approximately 400 KS / min to the absolute maximum circular comb speed of approximately 700 KS / min.
  • the control unit can easily use the second drive and the second gear stage for any type of fiber mass that has to be combed out from the circular comb with the appropriate circular comb -Process speed.
  • the number of combs of the round comb must be adapted to the stack length of the sliver, which is easily possible for the control unit via the second drive in connection with the second gear stage.
  • the number of combs is an important parameter when prioritizing quality and quantity.
  • the belt pulley transmission ratio for a circular comb gear stage depending on the setting of the desired speed or number of combs of the circular comb between 1.49 and 1.07 (at 50 Hz) or between 1, 79 and 0.29 (at 60 Hz) must be set to seven discrete brush speeds of 400 KS / min, 425 KS / min, 450 KS / min, 475 KS / min, 500 KS / min, 525 KS / min and 550 KS / min can be set.
  • the constant large output pulley has a diameter of 234 mm.
  • the second drive according to the invention allows a continuous adjustment of the desired circular comb speed, this process being independent of the mains frequency.
  • the first drive and / or the second drive are preferably each formed by a corresponding motor controller or a corresponding motor controller in connection with a corresponding drive motor.
  • the motor control as well as the motor controller are electronic components that drive the corresponding drive motor and in this way control or regulate the peripheral speed of the respective component, ie the brush or the round comb.
  • the brush and the round comb can be driven or regulated continuously, i.e. without interruption, via the corresponding drive.
  • the corresponding drive motor is further preferably a three-phase motor, preferably an asynchronous motor or a synchronous motor, and the respective motor control is a corresponding converter, in particular a frequency converter.
  • This design of a drive with a converter as motor control in connection with a three-phase motor as drive motor allows an optimal frequency and speed setting of the component in question.
  • asynchronous motors or synchronous motors which are controlled via a frequency converter, are suitable as three-phase motors.
  • the frequency converter has the significant advantage that a very large stroke between zero and the maximum speed of the brush or the round comb can be adjusted continuously or continuously. In this way, the brush speed and the circular comb speed can be controlled independently of one another and without interference using the control unit.
  • the corresponding drive motor is a servo motor and the respective motor controller is a corresponding servo amplifier.
  • This version of a drive with a servo amplifier as a motor controller in conjunction with a servo motor as a drive motor allows optimal control of the angular position as well as the speed and acceleration of the brush or the round comb. It is advantageous to monitor the rotational position of the brush shaft or the round comb shaft through the servo drive. This enables precise and reliable control of the servo motor.
  • a speed of the drive motor of the first drive for the brush and / or a speed of the drive motor of the second drive for the circular comb is particularly preferably individually and continuously adjustable via the corresponding motor control or the corresponding motor controller. This is advantageous in order to process a large area of fiber masses to be combed out with the cleaning device in the comber.
  • the maximum motor speed can be seen as an absolute measure of the speed transmission from the drive to the brush or the round comb.
  • the continuous control allows a very precise and very gentle setting of the relative speed between the brush and the round comb. Due to the continuous regulation of the brush speed depending on the change in the circular comb speed due to deposits in the comb segment, the relative speed can be kept at least approximately constant in normal operation.
  • the respective drive motor is preferably continuously adjustable up to a maximum possible motor speed via the corresponding motor controller or the corresponding motor controller.
  • the first gear stage and / or the second gear stage is in each case designed with a respective maximum pulley gear ratio, so that the maximum possible engine speed is continuously adjusted to the corresponding first drive or second drive in conjunction with the corresponding drive motor Brush or the round comb is transferable
  • a combing machine is further preferably formed with the cleaning device according to the invention. In this way, the comber can work optimally, since an exchange of drive pulleys of the brush gear or circular comb gear or cleaning of round combs in the removed condition is no longer necessary.
  • a method for cleaning a comb segment of a round comb by means of a cleaning device according to the invention of a combing machine wherein a first drive drives a brush via a first gear stage and a second drive drives a round comb via a second gear stage, and wherein a control unit drives the first drive Adjustment of the brush to a brush normal speed independently of the second drive for setting the circular comb to a circular comb normal speed controls.
  • at least the first gear stage is provided with a first maximum pulley transmission ratio, so that the brush can be continuously set from the normal brush speed to an absolute maximum brush speed and vice versa via the first drive.
  • This method has the advantage that the brush speed can be adjusted individually and continuously, regardless of the fiber mass, which means that downtimes of the comber, as is the case with conventional combers, are no longer necessary. Accordingly, it no longer matters whether a higher fiber mass has to be processed or whether the fiber mass is heavily soiled, because the brush speed can be adapted to the respective situation via the first drive in conjunction with the first gear stage using the control unit.
  • At least one interval-like cleaning or service step is provided during normal operation of the comber, the brush normal speed being continuously controlled via the control unit via the first drive and / or the circular comb normal speed being controlled via the second drive .
  • the drives according to the invention via the control unit for an interval-like and stepless adjustment of the relative speed between the brush speed and the circular comb speed over the entire Period of operation of the combing machine, it is advantageously possible to adjust the relative speed during the ascending and descending period of the round comb speed as well as in normal operation, so that an interval-like cleaning of the round combs with the bristles of the brushes over the entire period operation of the comber is guaranteed.
  • the interval-like driving of the brush and the round comb also minimizes the interaction of the respective bristles with the respective comb segments, so that the life of the bristles and the quality of the round combs is preserved over a long period of time.
  • the at least one cleaning or service step is particularly preferably carried out in a time interval of approximately 2 minutes to approximately 5 minutes. This time interval is relatively small compared to the entire operation of the comber, however, the circular comb can be cleaned more intensively in this time interval, or the comber can run more slowly for service purposes.
  • a step profile or a sawtooth profile is further preferably provided within the time interval in order to carry out intensive cleaning of the comb segment of the circular comb by the brush.
  • the step profile or the saw tooth profile allows the brush normal speed to be started up gently within the time interval, as a result of which the risk of wear on the bristles of the brush can be reduced.
  • the control unit further preferably uses the first drive to set a continuously increasing linear profile or, in sections, a step profile of the brush normal speed as a function of a change in the round comb normal speed due to signs of wear on the brush.
  • the normal brush speed can be continuously adapted to the changes in the comb speed, so that the relative speed remains approximately constant, which also significantly reduces the risk of wear and tear on the bristles of the brush.
  • the brush speed is first continuously set to the brush normal speed or higher with reference to an increasing time period of the circular comb speed via the first drive, before the setting of the circular comb normal speed takes place via the second drive and Only after the setting of the circular comb speed has been completed is the brush speed continuously set to a certain value deviating from the brush normal speed or to zero with reference to a descending period of time.
  • the control unit first sets the brush to a brush normal speed or higher with reference to the increasing period of the circular comb speed before the circular comb normal speed is set, and the control unit first sets the brush speed to a certain value deviating from the brush normal speed or to zero with reference to the descending time period of the circular comb speed after the setting of the circular comb speed has ended.
  • the bristles of the breasts can engage in their comb segment during the entire operation of the round comb and keep it free from deposits, as a result of which the quality of the round comb is maintained over a long period of time, in particular during the entire operation of the combing machine.
  • FIG. 1 shows a cross section through a comber with a cleaning device according to the invention
  • FIG. 4 speed curve of the brush speed and the circular comb speed according to FIG. 2 with a continuously increasing or a steadily decreasing linear profile of the brush speed during the increase or decrease of the circular comb speed;
  • FIG. 5 shows the speed profile of the brush speed and the circular comb speed according to FIG. 2 with a steadily increasing or a continuously decreasing sawtooth profile of the brush speed during the increase or decrease of the circular comb speed;
  • FIG. 7 shows the speed profile of the brush speed and the circular comb speed, the brush speed increasing continuously during normal operation depending on the practical profile of the circular comb speed according to FIG. 7;
  • Fig. 1 shows schematically a cross section of a combing unit of a combing machine. In practice, eight such combing units are arranged side by side.
  • the combing unit consists of a pliers unit 10 (short: pliers), which perform a back and forth movement on the front swing arms 12 and rear swing arms 14.
  • the front wings 12 (only one shown) are rotatably movable on a circular comb shaft 16 and on a front pliers shaft 18 of the pliers 10.
  • the rear rocker 14, which is rotatably mounted on a rear pliers shaft 20 of the pliers 10, is non-rotatably connected to a driven pliers shaft 22.
  • a cotton wool 26 is fed to a feed cylinder 24, which is rotatably mounted within the tongs 10.
  • the wadding 26 is unwound from a wadding roll, not shown, which rests on winding rolls, also not shown, for the rolling process.
  • the pliers 10 are open and are in a front position in which the fiber beard 28 protruding from the pliers 10 is attached to a fiber end 30 of an already formed non-woven fabric 32 and is soldered to it.
  • the nonwoven fabric 32 is held by a tear-off cylinder pair 34 which, for the soldering and tear-off process, perform a rotary movement indicated by the arrows and thus the nonwoven fabric 32, or its fiber end 30, moves in the transport direction T.
  • the fiber beard 28 protruding from the pliers 10 being combed out from a comb segment 36 or from a combing set of a rotatably mounted circular comb 38.
  • the combing segment 36 is in an upper position during the combing process.
  • the combing segment 36 is usually provided with clothing teeth which engage in the fiber beard 28 during the combing process.
  • the circular comb 38 which is rotatably mounted in the machine frame via the circular comb shaft 16, is located within a suction duct 40 which is essentially closed around and which opens into a channel 42.
  • the channel 42 is, as shown schematically, with a vacuum source 44 in connection, by means of which the separated goods are fed to a collection point, not shown.
  • the separated material is short fibers, shell parts, and other contaminants which are combed out of the fiber beard 28 by the combing segment 36 during the combing process.
  • Part of the combed out is through the negative pressure applied via the negative pressure source 44 and the air flow resulting therefrom are transferred directly to the channel 42.
  • the rest of the part, in particular the combed fibers remains in the combing segment 36, or settles between the garni tooth teeth and is conveyed downward into the position shown in FIG. 1 by the rotary movement of the circular comb 38.
  • the combing segment 36 comes into the effect area of a brush 48 which is also rotatably mounted in the suction shaft 40 via a brush shaft 46 and is equipped on its circumference with distributed bristles 50.
  • the brush 48 is driven by a first drive 52 in connection with a first gear stage 54 and has a higher speed than the speed of the circular comb 38 in order to continuously clean the circular comb 38 with the brush 48 during the entire operation of the combing machine.
  • the brush 48 is positioned such that the ends of the bristles 50 projecting outwards engage between the teeth of the combing segment 36. That is, during the rotary movement of the circular comb 38, a large number of bristles 50 come into engagement with the comb segment 36 due to the higher speed of the brush 48. In this process, the combed components still present in the comb segment 36, or between their clothing, come through the bristles 50 loosened or removed and fed downward under the action of the negative pressure applied to the channel 42 for disposal.
  • the material combed out by the combing segment 36 can be very different in part in terms of their quantity, their nature and their condition. If, for example, the material presented for combing is contaminated with honeydew, the removal of the constituents provided with sticky substances between the teeth of the combing segment 36 requires a more aggressive cleaning action than is required with other materials. Also, the degree of cleaning required to keep the comb segment 36 clean depends on the amount of material deposited between the clothing. This means that it also depends on the percentage (combed) of the combed material. The length of the combed fibers, which settle in the area of the combing segment 36 during the combing process, also has an influence on the cleaning action to be required by the brush 48. To maintain an optimal combing effect by the circular comb 38, it is necessary that the combing segment 36 is completely cleaned by the brush 48 after each combing operation.
  • the first drive 52 drives the brush 48 via the first gear stage 54 and independently of this a second drive 56 drives the circular comb 38 via a second gear stage 58.
  • a control unit 60 serves to independently control the first drive 52 for setting the brush 48 from zero to a brush normal speed 62 and the second drive 56 for setting the round comb 38 from zero to a round comb normal speed 64 , as shown in Fig. 2 each with a solid line ge.
  • the brush normal speed 62 is higher than the round comb normal speed 64 and results in a relative speed (marked as a double arrow in FIG. 2) between the breasts 48 and the round comb 38.
  • the conventional combing machines each have a drive in the form of a drive motor, which drives the brush or the round comb via a corresponding gear stage.
  • the corresponding gear stage for the brush is designed in such a way that a constantly large pulley on the output side is connected via a belt to an exchangeable drive pulley in order to transmit the speed of the corresponding drive motor to the brush or the round comb via a defined pulley transmission ratio.
  • the round comb there are usually seven interchangeable drive-side belt pulleys and four interchangeable drive-side belt pulleys can usually be used for the brush.
  • the brush normal speed and round comb normal speed can each be set to a higher or lower discrete speed, as shown in dashed lines in FIG. 3. It is crucial, however, that the drive motor, in conjunction with the drive pulley used in each case, has a defined pulley-gear ratio and thus can only be started from discrete speeds. Thus, in a disadvantageous manner, the conventional combing machine must be switched off completely in order to replace the drive-side pulleys in order to carry out the exchange.
  • the present invention solves this problem, as shown in FIG. 1, in that the first gear stage 54 is provided with a first maximum pulley-transmission ratio over the entire operation of the comber, preferably until a can change.
  • the first maximum pulley transmission ratio is designed such that the brush 48 is continuously driven from zero via the brush normal speed 62 to an absolute maximum brush speed 66 (see FIG. 3) and vice versa via the first drive 52 is adjustable.
  • the first maximum pulley gear ratio of the first gear stage 54 has a value of about 0.60 for the absolute maximum brushing speed 66 at a nominal engine speed of 3000 rpm.
  • the diameter of the output-side pulley is 110 mm and the diameter of the drive-side pulley is 182 mm (50 Hz) and 152 mm (60 Hz) for the first maximum pulley gear ratio of the first gear stage 54.
  • the absolute maximum brush speed 66 is continuously adjustable to a value of 2300 rpm.
  • the first drive 52 is designed with a first frequency converter 68 designed as a first motor controller in conjunction with a first three-phase motor 70 designed as a drive motor.
  • the first three-phase motor 70 is controlled by the first frequency converter 68 in such a way that, because of the first maximum pulley / gear ratio of the first gear stage 54, the transfer from the first three-phase motor 70 to the brush 48 can take place without hindrance.
  • a first motor controller in the form of a first servo amplifier can be used in conjunction with a first servo motor designed as a drive motor in order to achieve the desired brush speed via the first drive in conjunction with the continuously set the first gear stage.
  • the second gear stage 58 is provided with a second maximum pulley transmission ratio over the entire operation of the comber, preferably until a can change.
  • the second maximum pulley transmission ratio is designed such that, via the second drive 56, the circular comb 38 continuously from zero via the circular comb normal speed 64 to an absolute maximum circular comb speed 72 (see FIG. 3). and vice versa is adjustable.
  • the second maximum pulley-transmission ratio of the second gear stage 58 has a value of approximately 0.84 for the absolute maximum circular comb speed 72 at a nominal engine speed of 3000 rpm.
  • the diameter of the driven pulley is 234 mm (50 flz) or 281 mm (60 Hz) and the diameter of the driven pulley is at 278 mm (50 Hz and 60 Hz) for the second maximum pulley gear ratio of the second Gear stage 58.
  • the absolute maximum circular comb speed 72 can be continuously adjusted to a value of 700 rpm.
  • the second drive 56 is designed with a second frequency converter 74 designed as a second motor controller in conjunction with a second three-phase motor 76 designed as a second drive motor.
  • the second three-phase motor 76 from the second frequency converter 74 controlled such that, because of the second maximum pulley ratio of the second gear stage 58, the transfer from the second three-phase motor 76 to the circular comb 38 can take place unhindered.
  • a second motor controller in the form of a second servo amplifier can be used in conjunction with a second servo motor designed as a drive motor in order to achieve the desired circular comb speed via the second drive in conjunction with the second gear stage continuously set.
  • the combing machine can be completely stopped for the setting of the desired speeds, whereby a wide selection of fiber materials to be combed out can be processed and the circular comb 38 can be cleaned with the brush 48 without the combing machine being replaced to stop on the drive pulleys, as is the case with conventional combers.
  • sensors 80a, 80b, 80c distributed over the circumference of the circular comb 38 monitor the degree of contamination of the comb segment 36 of the circular comb 38.
  • a sensor 80a, 80b, 80c a camera system or a device for optical detection of the reflection could be used, as a result of which the density of the contamination in the comb segment of the circular comb is determined and the distance from the brush to the circular comb can be determined.
  • the sensors 80a, 80b, 80c are connected to the control unit 60 in the same way as the first drive 52 and the second drive 56.
  • the control unit 60 has a data memory with stored sensor signals which reflect the cleaned state of the round comb or the degree of contamination of the round comb.
  • the sensors 80a, 80b, 80c provide the control unit 60 with the state of the circular comb, the control unit 60 comparing the actual state with the target state on the basis of the sensor data determined and correspondingly the brush normal speed over the first Drive 52 in conjunction with the first gear stage 54 controls the appropriate new brush normal speed, if necessary, in order to achieve the desired cleaning of the round comb 38.
  • the regulation of the new brush normal speed can be carried out very closely with the cleaning device 78 according to the invention, so that any change in the degree of contamination on the circular comb 38 can be recognized and readjusted immediately.
  • control unit 60 can design the readjustment in such a way that the cleaning takes place properly, but the degree of wear of the bristles 50 of the brush 48 is kept as small as possible.
  • the cleaning device 78 according to the invention it is very efficiently possible to optimally adjust the cleaning process of the circular comb 38 with the brush 48 and the wear and tear of the bristles 50 of the brush 48, as a result of which the combing quality of the circular comb 38 during the entire operation of the combing machine until the next Can change is retained.
  • FIGS. 4 to 11 application examples for cleaning the round comb are presented, which can be carried out with the cleaning device 78 according to the invention according to FIG. 1.
  • the brush normal speed 62 and circular comb normal speed 64 are set, so that the signs of wear on the bristles of the brush are kept as small as possible.
  • a continuously increasing linear profile is provided in FIG. 4 and a saw tooth profile is provided in FIG. 5.
  • a service step is provided in a defined time interval of 2 min to 5 min during the operation of the comber, the compensated brush normal speed 62a and the practical circular comb normal speed 64a each being the same Amount are reduced so that the relative speed remains at least approximately the same.
  • the cotton wrap can be changed during this service step, while the round comb continues to be cleaned.
  • the control unit 60 first sets the brush 38 to the brush normal speed 62 or higher with reference to an increasing time segment 82a, 82b of the circular comb speed a before setting the circular comb normal speed 64, and the control unit 60 first sets the brush speed to a certain value deviating from the brush normal speed 62 or to zero with reference to a descending time period 84a, 84b the round comb speed after the round comb speed setting is finished.
  • the increasing time period or the decreasing time period means a change in the speed per unit of time, in contrast to a speed that remains constant at a time per unit of time.
  • the brush speed can increase or decrease during the constant circular comb speed.
  • FIG. 11 shows a further possibility of compensating for the practical course 64a of the circular comb normal speed 64 by means of the brush normal speed 62, the compensation depending on a sensor threshold value 86a, 86b, as in connection with FIG. 1 already described, which in the tax 60 and is compared with currently measured sensor data from the sensors 80a, 80b, 80c, on the basis of which the first drive 52 in connection with the first gear stage 54 according to FIG. 1 intermittently the correspondingly new compensated brush normal speed 62a , 62b.
  • this new, compensated brush normal speed 62a, 62b is only set when the corresponding sensor threshold value 86a, 86b has been recognized by the control unit 60.
  • FIG. 11 shows the situation between the sensor threshold values 86a, 86b and the compensated brush normal speeds 62a, 62b only in a very exemplary manner in order to better explain the method in this connection.

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

Abstract

L'invention concerne un dispositif de nettoyage (78) d'une peigneuse, comprenant une brosse (48) servant à nettoyer un segment de peigne (36) d'un peigne circulaire (38), un premier entraînement (52) servant à entraîner la brosse (48) sur une premier étage de transmission (54), un deuxième entraînement (56) servant à entraîner le peigne circulaire (38) sur un deuxième étage de transmission (58), et une unité de commande (60) servant à commander de manière indépendante le premier entraînement (52) en vue du réglage de la brosse (48) sur une vitesse normale de brosse (62) et le deuxième entraînement (56) en vue du réglage du peigne circulaire (38) sur une vitesse normale de peigne circulaire (64). Selon l'invention, au moins le premier étage de transmission (54) est pourvu, pendant la totalité du fonctionnement de la peigneuse, d'un premier rapport maximal de démultiplication de poulie, lequel est réalisé de telle manière que la brosse (48) peut être réglée par l'intermédiaire du premier entraînement (52) en continu de zéro sur une vitesse de brosse maximale (66) absolue en passant par la vitesse normale de brosse (62).
PCT/IB2019/059483 2018-11-15 2019-11-05 Dispositif de nettoyage d'une peigneuse et procédé WO2020099980A1 (fr)

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CH01414/18A CH715551A1 (de) 2018-11-15 2018-11-15 Reinigungsvorrichtung einer Kämmmaschine und ein Verfahren.
CH01414/18 2018-11-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116288826A (zh) * 2023-02-22 2023-06-23 三阳纺织有限公司 一种带式锡林系统及应用其的精梳机

Citations (7)

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Publication number Priority date Publication date Assignee Title
US3735446A (en) 1970-12-09 1973-05-29 Spinnerei Karl Marx Veb Cleaning device for circular combs on a combing machine
DD297672A5 (de) 1989-09-07 1992-01-16 N. Schlumberger Et Cie,S. A.,Fr Vorrichtung zur automatischen kompensierung des verschleisses der kreisfoermigen buerste einer geradlinigen kaemmaschine
EP1384799A1 (fr) * 2002-07-26 2004-01-28 N. Schlumberger S.A. Dispositif et procédé de pilotage et de consultation des paramètres de marche de machines textiles
CN2617788Y (zh) * 2003-05-19 2004-05-26 上海纺织机械总厂 精梳机毛刷的传动装置
CN101445976A (zh) * 2008-12-29 2009-06-03 东华大学 数字化独立单元驱动精梳机
CH710292A2 (de) 2014-10-28 2016-04-29 Rieter Ag Maschf Reinigungsvorrichtung eines Rundkammes einer Kämmmaschine.
EP3128052A1 (fr) 2015-08-04 2017-02-08 Kabushiki Kaisha Toyota Jidoshokki Peigne

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JP5609530B2 (ja) * 2010-10-22 2014-10-22 株式会社豊田自動織機 コーマのデタッチングローラ動作設定装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735446A (en) 1970-12-09 1973-05-29 Spinnerei Karl Marx Veb Cleaning device for circular combs on a combing machine
DD297672A5 (de) 1989-09-07 1992-01-16 N. Schlumberger Et Cie,S. A.,Fr Vorrichtung zur automatischen kompensierung des verschleisses der kreisfoermigen buerste einer geradlinigen kaemmaschine
EP1384799A1 (fr) * 2002-07-26 2004-01-28 N. Schlumberger S.A. Dispositif et procédé de pilotage et de consultation des paramètres de marche de machines textiles
CN2617788Y (zh) * 2003-05-19 2004-05-26 上海纺织机械总厂 精梳机毛刷的传动装置
CN101445976A (zh) * 2008-12-29 2009-06-03 东华大学 数字化独立单元驱动精梳机
CH710292A2 (de) 2014-10-28 2016-04-29 Rieter Ag Maschf Reinigungsvorrichtung eines Rundkammes einer Kämmmaschine.
EP3212830A1 (fr) 2014-10-28 2017-09-06 Maschinenfabrik Rieter AG Dispositif de nettoyage pour peigne circulaire d'une peigneuse
EP3128052A1 (fr) 2015-08-04 2017-02-08 Kabushiki Kaisha Toyota Jidoshokki Peigne

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116288826A (zh) * 2023-02-22 2023-06-23 三阳纺织有限公司 一种带式锡林系统及应用其的精梳机

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