EP3293295B1 - Messsystem für eine maschine zur verarbeitung eines fasertextilmaterials - Google Patents

Messsystem für eine maschine zur verarbeitung eines fasertextilmaterials Download PDF

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Publication number
EP3293295B1
EP3293295B1 EP17190938.5A EP17190938A EP3293295B1 EP 3293295 B1 EP3293295 B1 EP 3293295B1 EP 17190938 A EP17190938 A EP 17190938A EP 3293295 B1 EP3293295 B1 EP 3293295B1
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EP
European Patent Office
Prior art keywords
sensor
quality
spinning machine
spinning
parameter
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English (en)
French (fr)
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EP3293295A1 (de
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Srinivasan Varadarajan
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Premier Evolvics Pvt Ltd
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Premier Evolvics Pvt Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/26—Arrangements facilitating the inspection or testing of yarns or the like in connection with spinning or twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices

Definitions

  • the invention relates to the field of textile machines processing strand like materials and in particular to a measurement system for a machine that processes a continuous strand like textile material as described in the preamble of the corresponding independent claim.
  • Spinning machines can be equipped with sensors that allow to determine production parameters, such as
  • a ring spinning machine has plurality of spinning positions or spinning stations where the yarns are running. This is called “running status" of the yarn.
  • a yarn can stop running either due to a “machine stop” where all the spinning positions stop running. Alternatively, when a yarn breaks in a spinning position, that position alone will stop running. The second case is called a “yarn break”.
  • the machine running status and a position running status together are "measured parameters” and from these two, one can calculate many "derived parameters” like idle spindles, mending time, rogue spindles, worst spinning positions, volume of production etc.
  • Speed of yarn i.e. rotational speed of the yarn and the delivery speed of the yarn are “measured” parameters too and these can be used to determine “derived parameters”.
  • startup breaks refers to breaks which happen immediately when the machine starts running with a new package loaded.
  • Idle spindles refers to the spindles having a break time that exceeds a given time limit. For example, spinning positions where the break time is greater than 30 minutes are treated as idle spindles.
  • production parameters are related to a quantity of a production process and/or to a status of a production machine.
  • Winding stations or separate testing machines can be equipped with yarn quality sensors that allow to determine quality parameters, such as
  • a winding machine can have a quality measuring head to monitor, measure and cut faults in the yarn.
  • faults are classified as neps, short thick places, long thick places and long thin places.
  • other parameters like evenness, hairiness, imperfections, the presence of foreign materials and vegetable matters etc. can be monitored.
  • Parameters like thick, thin, neps, evenness, and other faults can be derived from a signal given by a mass sensor, which can be a capacitive or an optical sensor. Hairiness, foreign materials, vegetable matters are usually determined by optical sensors in a winding machine.
  • a winding machine is the final stage of a spinning process, where the above faults, when exceeding given deviations from reference values, should not be allowed. Hence whenever a deviation that is classified as a fault occurs (it can be thick, thin, nep, evenness, hairiness etc.), a cut will be initiated, thereby stopping production, and the winding machine will remove the fault, piece the yarn together automatically and continue production.
  • quality parameters are related to a quality of a product, that is of a yarn, or more generally, of a strand like textile material.
  • Production parameters and quality parameters can be measured at various places in a spinning mill: As an example, US 5,517,404 describes a process control system for a spinning mill, having ring spinning positions each with a sensor for ascertaining whether it is in operation or not, and winding stations having winding positions each with a yarn tester for monitoring yarn quality parameters.
  • off-line testers such as evenness testers are used in which samples taken from out of the production process are analysed in a laboratory and then discarded. Only a small sample of the produced yarn is tested.
  • US 6,112,508 discloses an apparatus for monitoring yarns on spinning machines, with a sensor travelling along a track in front of the spinning positions of a spinning machine to be such that mavericks and other forms of unevenness in the yarn can be located.
  • the sensor is an optical sensor that detects the diameter of the yarn rotating around the spindle, i.e. in the yarn balloon, according to light reflected from the rotating yarn.
  • EP 0 375 012 discloses a photoelectric or capacitive or piezoelectric transducer positioned under the last pair of drafting rollers. They are mounted one at each spinning spindle, to check the quality of yarn.
  • EP 1 574 607 discloses a system and method in which online quality data and results from an offline testing system are involved. This is for the specific purpose of replacing measurements made in an offline testing machine by the online quality measurement.
  • EP 3 009 388 discloses an integrated sensing, control and resurrection system for yarn breakage.
  • JP S62 57956 discloses a display unit for a yarn monitoring device.
  • At least one of these objects is achieved by a ring spinning machine according to claim 1.
  • the measurement system for a machine that processes a continuous strand like textile material wherein the machine is a ring spinning machine according to claim 1 comprising a plurality of spinning positions, the measurement system comprising
  • Arranging for such on-line yarn quality testing in a ring spinning machine according to claim 1 allows for at least one of the following benefits:
  • each of the plurality of spinning positions is associated with an individual quality measurement unit.
  • the measurement system comprises only one quality measurement unit in only one spinning position for only one strand.
  • the at least one quality measurement unit comprises a first sensor that is capable of determining at least one first sensor signal from which the quality parameter can be determined, and a first signal processing unit for determining the quality parameter from the first sensor signal.
  • the first sensor comprises at least one quality sensor element arranged to measure the at least one quality parameter at one spinning position of the spinning machine.
  • the first sensor can comprise a plurality of sensor elements/multiple quality sensors elements.
  • the first sensor is arranged to generate a single first sensor signal
  • the first signal processing unit is arranged to determine one or more quality parameters from one or more first sensor signals from a single spinning position.
  • the first signal processing unit is arranged to determine one or more quality parameters from one or more first sensor signals from a plurality of spinning positions.
  • the measurement system comprises
  • E xamples for the running status can correspond to the following: “Running” or “stopped”. Parameters associated with “Running” can comprise one or more of
  • Parameters associated with "Stopped” can comprise one or more of
  • the at least one production measurement unit comprises a second sensor that is capable of determining at least one second sensor signal from which the production parameter can be determined, and a second signal processing unit for determining the production parameter from the second sensor signal.
  • the second sensor comprises at least one production sensor element arranged to measure the at least one production parameter at one spinning position of the spinning machine.
  • the second sensor is arranged to generate a single second sensor signal
  • the second signal processing unit is arranged to determine one or more production parameters from one or more second sensor signals from a single spinning position.
  • the second signal processing unit is arranged to determine one or more production parameters from one or more second sensor signals from a plurality of spinning positions.
  • a first sensor (as part of a quality measurement assembly) and a second sensor (as part of a production measurement assembly) are arranged to observe the same strand of the strand like textile material being continuously transported within the spinning machine.
  • the quality measurement assembly can comprises a housing in which the first sensor is arranged, and mounting elements for attachment to the spinning machine, e.g. above a lappet hook.
  • the production measurement assembly can comprises a housing in which the second sensor is arranged, and mounting elements for attachment to the spinning machine, e.g. below a lappet hook.
  • the measurement system is configured such that the strand of the strand like textile material being continuously transported within the spinning machine passes through the first sensor, a lappet hook and the second sensor (3b).
  • the measurement system is configured such that the strand of the strand like textile material being continuously transported within the spinning machine passes through a quality measurement assembly, the lappet hook and a production measurement assembly.
  • the strand passes through the lappet hook after passing through the first sensor.
  • the strand passes through the second sensor after passing through the lappet hook.
  • the strand first passes through the first sensor, then passes through the lappet hook and afterwards passes through the second sensor.
  • the sensor is arranged to observe the strand of the strand like textile material being continuously transported within the spinning machine as it passes along the spinning path.
  • the portion of the path of the stand extending between the delivery rollers and the lappet hook is called the spinning path.
  • the sensor is arranged to determine one or more sensor signals which in turn allow to determine production parameters and/or quality parameters of the strand.
  • the first sensor and the second sensor are arranged on a common carrier structure.
  • the first sensor as part of a quality measurement assembly and the second sensor as part of the production measurement assembly are arranged on a common carrier structure.
  • the common carrier structure is a physical structure that comprises the first and the second sensor, and that can be transported, handled, mounted to and dismounted from the machine as a single structure.
  • the common carrier structure is arranged such that the first sensor is located above the lappet hook and the second sensor is located below the lappet hook.
  • the at least one quality parameter is derived from a measurement at least one of the following properties of the strand like textile material:
  • the at least one quality parameter describes at least one of
  • the at least one production parameter is derived from a measurement at least one of the following:
  • the rotational speed is the speed with which the traveller and the yarn rotate around the cop.
  • the at least one production parameter describes at least one of
  • each sensor and an associated signal processing unit are physically arranged in a common carrier unit.
  • each sensor and an associated signal processing unit are physically arranged in separate carrier units.
  • the measurement system comprises a plurality of sensors, each associated with a spinning position, these sensors being mounted on non-moving parts of the spinning machine.
  • At least one sensor associated with a spinning position is mounted on non-moving parts of the spinning machine
  • the measurement system comprises a plurality of sensors, each associated with a spinning position, these sensors being mounted on moving parts of the spinning machine.
  • At least one sensor associated with a spinning position is mounted on moving parts of the spinning machine
  • Such moving parts can be at least one of a ring rail, a lappet hook (pigtail hook) and a balloon control ring.
  • the sensors are arranged between front rollers of a drafting system and a ring of a spinning position of the spinning machine.
  • the sensors are arranged to measure yarn quality parameters between front rollers of a drafting system and a lappet hook (or yarn guide eyelet) of the spinning position.
  • the at least one quality measurement unit comprises a visual indicator of at least one quality parameter and/or production parameter or a deviation of such a parameter (from a reference value), and in particular wherein the visual indicator comprises at least one of
  • the measurement system comprises a common display unit that is configured to display at least one of
  • Communication between the display unit and the quality measurement units can be wire-based or wireless.
  • the display unit can be implemented by a user interface of the measurement system itself or by a third-party handheld device such as a smart device interface like a smartphone or PDA or (tablet) computer.
  • the measurement system comprises a stopper arranged to perform at least one of holding and cutting the strand like textile material.
  • the measurement system is configured to actuate the stopper automatically or manually, in particular by means of a user interface of the measurement system itself or by a smart device interface that is in wireless communication with the measurement system.
  • the measurement system comprises or is connected to a monitoring unit that is configured to
  • the monitoring unit can be a dedicated hardware unit, or it can be implemented as a software function. Such a software function can be executed in the signal processing unit and/or in the processed signal handling and communication system.
  • a signal - typically optical or acoustical - to an operator can be generated, and/or an error logfile can be updated with information about the malfunction.
  • the monitoring unit is configured to detect thin places, and to identify a malfunction of feeding bobbins when too many thin places occur.
  • the monitoring unit is configured to monitor a first and a second of two adjacent spinning positions, with a first quality parameter measured at the first spinning position and a second quality parameter measured at the second spinning position, and to identify a malfunction of drafting rollers for the two spinning positions when the first and the second quality parameter deviate in the same way.
  • the monitoring unit is configured to detect when the thickness of a yarn deviates from a reference thickness for a time that is longer than a time limit, and to identify a malfunction of the drafting system if this is detected.
  • the monitoring unit is configured to monitor one or more quality parameters and to identify a deviation of the yarn count on the basis of these quality parameters.
  • the monitoring unit can be arranged to operate as in the following embodiments: When a plurality, and in particular each and every spindle of a spinning machine, is monitored through the online quality monitoring system, then the reason for deviation in quality parameters can be determined immediately as the spinning takes place. For example, machinery part defects in each spinning position will be identified easily by observing a quality parameter deviation.
  • One example is identifying the reason for high thin places (that is, unacceptably thin places) in yarn:
  • the reason for high thin places may be due to improper and irregular feeding of roving material. More particular, the reason can be an obstruction of the free rotation of a roving bobbin, which causes the feed package to produce thin places.
  • the obstructing feeding bobbins can be identified.
  • a further quality parameter is hairiness, determined by a measurement of the fibres protruding over the textile material.
  • One cause of deviations of hairiness are deviations in preparatory processes which cause more short fibres in the textile strand that enters the ring spinning machine, which in turn creates more hairiness of the yarn produced.
  • hairiness monitoring in the spinning machine can alert an operator, indicating deviations of hairiness exceeding a given limit.
  • a possible case of improper drafting is when two yarns combine with each other at delivery and get delivered as a single thick yarn.
  • One or more quality properties of that thick yarn are of course quite different compared to other normal yarns.
  • Such cases generally occur in ring frames, and such deviated yarns can be detected with online quality monitoring.
  • Figure 1 shows elements of a ring spinning machine and associated measurement and control systems.
  • a number of spinning positions (which can also be called spinning stations), each with a spindle 7 carrying a spool on which a yarn 2 is wound on a bobbin or cop 4 by means of a traveller 6 spinning on a ring 5.
  • the yarn 2 is delivered from a drafting system, of which only drafting rollers or delivery rollers 1 are shown in the figure.
  • Other elements of a spinning position not shown, are a lappet hook (or yarn guide eyelet or pigtail), balloon control ring (or balloon checking ring), ring rail, roller beam etc.
  • the portion of yarn 2 between the delivery rollers 1 and the lappet hook is called the spinning path.
  • a sensor 3 in each of the spinning positions, a sensor 3 is arranged to observe the yarn 2 as it passes along the spinning path.
  • To "observe” means that the sensor 3 is arranged to determine one or more sensor signals 17 which in turn allow to determine production parameters 18 and/or quality parameters 19 of the yarn.
  • These parameters referred to collectively as " processed signals " are determined from the sensor signal or signals 17 by one or more signal processing units 8.
  • the processed signals from - typically a plurality of - signal processing units 8 are collected by a data collection unit 25 and further received by a processed signal handling and communication system 9 and can further be transmitted to an information system 10.
  • the processed signals can be collected and stored by a data collection unit 25.
  • Production parameters 18 are indicative of the quantity of yarn 2 that is produced. They typically describe whether a yarn 2 is present at all - if not, then production at the respective spinning position is interrupted and does not take place - or the speed of production, e.g. the speed of the yarn 2.
  • Production parameters 18 are, for example, a breaking of the strand like textile material, the time of breakage, associated time loss, repeated breaks, long duration breaks, breaks due to sudden movement of machine parts, delivery speed of the strand like textile material, rotational speed of the traveller of a spinning machine, efficiency, etc.
  • Quality parameters 19 are indicative of the quality of the yarn 2 as it passes by the sensor 3 when production takes place. They typically are based on optical or electrical properties of the yarn 2 and describe e.g. mass or thickness or reflectivity and further parameters and statistical values derived therefrom.
  • Quality parameters 19 are, for example, evenness, coefficient of variation, deviation rate, deviations from reference values, impurities like thick places, thin places, neps, hair properties, diameter, linear density, presence of foreign materials and vegetable matters etc.
  • a sensor 3 that determines quality parameters 19 can often also be used to detect the presence or absence of the yarn 2. It can therefore also provide information that allows to determine production parameters 18. Absence of the yarn typically indicates breakage of the yarn.
  • Figure 2 shows sections of three adjacent spinning positions, with in each case the yarn 2 passing through a quality measurement assembly 28, a lappet hook 23 and a production measurement assembly 27.
  • a sensor 3 together with an associated signal processing unit 8 forms a quality measurement unit 21 or a production measurement unit 20 or a common measurement unit 22.
  • sensors 3 and signal processing units 8 When referring to sensors 3 and signal processing units 8, it is understood that these can stand, respectively, for such first, second and common sensors and such first, second and common signal processing units.
  • Figure 8 shows a sensor 3, which can be a first, a second or a common sensor, wherein the common sensor embodiment does not fall within the scope of the claims, as shown in Figures 3-7 , with one sensor element 31 (left) and with two or more sensor elements 31 (middle and right).
  • the sensor elements 31 are quality sensor elements, production sensor elements or common sensor elements.
  • Figures 9-12 show arrangements of sensors 3 and associated signal processing units 8.
  • the sensors are shown as pairs of first sensors 3a (as part of quality measurement assemblies 28) and second sensors 3b (as part of production measurement assemblies 27) arranged to observe the same yarn 2.
  • These first and second sensors 3a, 3b can have their signals processed by separate first and second signal processing units 8a, 8b or by a common signal processing unit 8c, which will be referred to collectively as signal processing units 8.
  • Figure 9 shows sensors 3 and signal processing units 8 arranged pairwise, for each spinning position on a common carrier unit 26 or even in a common housing, e.g. within a quality measurement assembly 28 or a production measurement assembly 27.
  • Figure 10 shows sensors 3 and signal processing units 8 being arranged pairwise, for each spinning position in a separate housing or on a separate carrier unit 26.
  • Figure 11 shows a single signal processing unit 8 that is common to a plurality of sensors 3, i.e., that processes the sensor signals from this plurality of sensors 3. This plurality of sensors 3 and the signal processing unit 8 are arranged on the same carrier unit 26 or in the same housing.
  • Figure 12 also shows a single signal processing unit 8 that is common to a plurality of sensors, but with the signal processing unit 8 arranged in a housing or on a carrier unit 26 that is separate from the plurality of sensors 3.
  • a carrier unit 26 is a physical unit that comprises one or more units, such as sensors 3 or assemblies and/or signal processing units 8, and that can be transported, handled, mounted to and dismounted from the machine as a single unit.
  • Signal processing units 8, one or more data collection units 25, and associated processed signal handling and communication systems 9 can be arranged in different ways, for example:
  • Communication between the different units or systems can be by wire-bound or wireless communication technologies.
  • the processed signal handling and communication system 9 and information system 10 can be arranged on common or separate carriers or housings, and can communicate with by wire-bound or wireless communication technologies. Furthermore, the processed signal handling and communication system 9 and information system 10 can be arranged on the same carrier or in the same housing together with one or more signal processing units 8.
  • the processed signal handling and communication system 9 is programmed and configured to handle processed signals from a plurality of signal processing units 8 of one or more spinning machines. These signal processing units 8 are part of production measurement units 20 and/or quality measurement units 21.
  • the processed signal handling and communication system 9 stores the processed signals, and in particular the production parameters 18 and the quality parameters 19, obtained from the signal processing units 8.
  • the processed signals can be stored in compressed format, for example by storing only information regarding a total or an average number of faults for a unit of production, rather than parameters of each fault.
  • the information system 10 is used for compiling, processing, displaying and printing information obtained from the processed signal handling and communication system 9.
  • the information system can generate reports with accumulated data on production parameters 18 and quality parameters 19. Reports can comprise live on-line information or stored information past periods of time.
  • the information system can store a large amount of historical data for viewing the history of quality and production parameters of multiple ring frames for each spindle position.
  • the information system 10 can be used for an operator to input data and/or commands for controlling the system, that is, the spinning machine and/or the processed signal handling and communication system 9 and/or the signal processing units 8. This can be done by the information system 10 communicating with the signal processing units 8 (of production measurement units 20 and/or quality measurement units 21 and/or common measurement units 22) through the processed signal handling and communication system 9.
  • Commands for controlling the system can include requirements input by an operator, such as control parameters, set points for detecting faults, generating alerts etc.
  • the information system 10 can also be arranged to inform and alert an operator or other user about the production and quality parameters, deviations noticed etc. through one or more of various communication tools like emails, SMS and internet based messaging and social networking tools.
  • a plurality of sensors, production measurement units 20 or quality measurement units 21 are arranged at adjacent spinning positions. This can be done by mounting them on separate carriers for each spinning position. Alternatively, this can be done by mounting them on a common carrier that spans a plurality of spinning positions. The same variations are possible when they comprise signal processing units 8.
  • Figures 13-14 show different ways for mounting sensors 3 on the spinning machine, that is, on moveable parts or on fixed, i.e. non-moveable parts.
  • Figure 13 shows a sensor 3 attached to and moving with a lappet hook 23 of a spinning position.
  • Figure 14 shows a sensor 3 attached to a roller beam 24, which is a non-moveable part.
  • the same mounting options - i.e., moveable or fixed - are possible with combinations of sensors 3 and signal processing units 8 instead of just sensors 3.
  • Figure 15 shows a display of quality parameters and/or production parameters in or near a sensor 3 and/or its associated signal processing unit 8.
  • Each sensor can be equipped with a light emitting element such as a lamp 14 or LED which can be lit at least in one colour.
  • the lamp 14 indicates, e.g., deviations from set limits or reference values of the strand like textile material for different quality parameters in single and multiple colours.
  • values and/or deviations of a quality parameter 19 and/or a production parameter 18 can be indicated by operating the lamp 14 in different ways. Such different ways can be: lighting the lamp in different colours, lighting the lamp permanently or flashing the lamp; flashing the lamp at different frequencies, and combinations thereof.
  • Figure 16 show a display of quality parameters and/or production parameters for a single sensor or a plurality of sensors by means of a display unit 12 arranged on or near a sensor 3 and/or its associated signal processing unit 8.
  • a button 13 or touch sensitive area or other input element can be used to select individual quality parameters and/or parameter values derived therefrom, such as statistical values, to be displayed.
  • such an input element can be used to select individual sensors 3 or groups of sensors 3 to which the displayed values relate.
  • Figure 17 show a display of the quality parameters and/or production parameters and other values mentioned in Figure 16 , for a single sensor or a plurality of sensors, but on a display unit 12 that is separated from the sensors 3.
  • the display unit 12 can communicate with the signal processing units 8 directly or through the processed signal handling and communication system 9 or the information system 10, by means of wire bound or wireless communication technologies.
  • Figure 18 show a configuration as in Figure 17 , wherein the display unit 12 is a commercially available smart device interface, a smart device interface 16 being typically a handheld device such as PDA or smartphone or mobile phone or tablet computer, and typically communicating by wireless means.
  • a smart device interface 16 being typically a handheld device such as PDA or smartphone or mobile phone or tablet computer, and typically communicating by wireless means.
  • Figure 19 shows a sensor 3 with an associated stopper 11.
  • a stopper 11 is used to stop the production of the strand like textile material when there is a deviation of a quality parameter 19 that crosses a predetermined limit, that is, becomes larger than the limit or smaller than the limit, depending on whether it is an upper or a lower limit.
  • a deviation of a parameter can be processed in the following manner in order to detect a fault or more generally an event.
  • a fault or event can influence a derived parameter, such as a fault count, statistical measures, etc., and/or generate a signal to the operator and/or trigger a stopper, etc.
  • An event can be detected when the parameter exceeds an upper limit, or - what is mathematically equivalent - the deviation of the parameter from a reference value in the positive direction is larger than an upper deviation limit.
  • an event can be detected when the parameter falls below a lower limit, or - what is mathematically equivalent - the deviation of the parameter from a reference value in the negative direction is larger than a lower deviation limit.
  • Such limits for parameters or for deviations can be set by an operator, or be based on statistical analysis using measurements from a plurality of spinning positions of a spinning machine, or be based on statistical analysis using measurements from a plurality of spinning machines. For example, for a particular parameter a long term (e.g. over several minutes or hours or more of a production run with nominally the same parameters) average value is determined from such measurements. The limits can be derived from this average value manually or automatically, e.g. by multiplying the long term average with a tolerance factor. Depending on whether the limit is an upper or a lower limit, the tolerance factor is larger or smaller than one.
  • the stopper 11 can be a cutter which cuts the strand like textile material, or a gripper arranged to hold the strand like textile material.
  • a decision for stopping the strand like textile material can be taken automatically, for example by the signal processing unit 8 or the processed signal handling and communication system 9. Alternatively, a command for stopping can be manually triggered by an operator by means of a display unit 12 or smart device interface 16 as described herein.
  • Figures 20-21 show sensors with associated user interface devices, these devices being a dedicated user interface 15 or a commercially available smart device interface 16. These user interface devices can communicate directly with a sensor 3 or its associated signal processing unit 8, or via a processed signal handling and communication system 9 or an information system 10.
  • corresponding display elements or devices as described in relation with Figures 15 to 21 that is, lamps 14 with one or more colours, display units 12, user interfaces 15 and smart device interfaces 16, can be configured to indicate information relative to parameters determined from measurements of the sensors 3 that are present.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (15)

  1. Ringspinnmaschine, die ein Messsystem enthält, wobei die Ringspinnmaschine mehrere Spinnpositionen aufweist, wobei das Messsystem Folgendes umfasst:
    • mehrere Qualitätsmesseinheiten (21), die jeweils konfiguriert sind, mindestens einen Qualitätsparameter (19) von mindestens einem Faden des fadenartigen Textilmaterials, das in der Spinnmaschine kontinuierlich transportiert wird, kontinuierlich zu messen,
    wobei jede der mehreren Qualitätsmesseinheiten (21) einen ersten Sensor (3a), der mindestens ein erstes Sensorsignal (17a) bestimmen kann, aus dem der Qualitätsparameter (19) bestimmt werden kann, und eine erste Signalverarbeitungseinheit (8a) zum Bestimmen des Qualitätsparameters (19) aus dem Sensorsignal (17a) umfasst,
    wobei das Messsystem Folgendes umfasst
    • mindestens eine Produktionsmesseinheit (20), die jeweils konfiguriert ist, mindestens einen Produktionsparameter (18), der einen Laufstatus des mindestens einen Fadens des kontinuierlich transportierten fadenartigen Textilmaterials bezeichnet,
    wobei jede der mehreren Spinnpositionen einer individuellen Produktionsmesseinheit (20) zugeordnet ist,
    wobei die mindestens eine Produktionsmesseinheit (20) einen zweiten Sensor (3b), der mindestens ein zweites Sensorsignal (17b) bestimmen kann, aus dem der Produktionsparameter (18) bestimmt werden kann, und eine zweite Signalverarbeitungseinheit (8b) zum Bestimmen des Produktionsparameters (18) aus dem zweiten Sensorsignal (17b) umfasst,
    wobei der erste Sensor (3a) und der zweite Sensor (3b) ausgelegt sind, denselben Faden des fadenartigen Textilmaterials, das in der Spinnmaschine kontinuierlich transportiert wird, zu beobachten,
    dadurch gekennzeichnet, dass das Messsystem derart konfiguriert ist, dass der Faden des fadenartigen Textilmaterials, das in der Spinnmaschine kontinuierlich transportiert wird, den ersten Sensor (3a), einen Leitösen-Haken (23) und den zweiten Sensor (3b) durchläuft,
    wobei der Faden den ersten Sensor durchläuft, bevor er den Leitösen-Haken durchläuft,
    wobei der Faden den zweiten Sensor durchläuft, nachdem er den Leitösen-Haken durchlaufen hat,
    wobei der erste Sensor (3a) und der zweite Sensor (3b) auf einer gemeinsamen Trägerstruktur angeordnet sind.
  2. Ringspinnmaschine nach Anspruch 1, wobei jede der mehreren Spinnpositionen einer individuellen Qualitätsmesseinheit (21) zugeordnet ist.
  3. Ringspinnmaschine nach einem der vorhergehenden Ansprüche,
    wobei der erste Sensor (3a) mindestens ein Qualitätssensorelement umfasst, das ausgelegt ist, den mindestens einen Qualitätsparameter (19) an einer Spinnposition der Spinnmaschine zu messen,
    wobei der erste Sensor (3a) insbesondere ausgelegt ist, ein einzelnes erstes Sensorsignal (17a) zu erzeugen
    • aus Ablesungen eines einzelnen des mindestens einen Qualitätssensorelements oder
    • aus Ablesungen von zwei oder mehr des mindestens einen Qualitätssensorelements.
  4. Ringspinnmaschine nach Anspruch 3, wobei die erste Signalverarbeitungseinheit (8a) ausgelegt ist, einen oder mehrere Qualitätsparameter (19) aus einem oder mehreren ersten Sensorsignalen (17a) aus einer einzelnen Spinnposition und/oder aus mehreren Spinnpositionen zu bestimmen.
  5. Ringspinnmaschine nach Anspruch 1 bis 4,
    wobei der zweite Sensor (3b) angeordnet ist, ein einzelnes zweites Sensorsignal (17b) zu erzeugen
    • aus Ablesungen eines einzelnen des mindestens einen Produktionssensorelements oder
    • aus Ablesungen von zwei oder mehr des mindestens einen Produktionssensorelements.
  6. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, wobei der mindestens eine Qualitätsparameter (19) aus einer Messung mindestens einer der folgenden Eigenschaften des fadenartigen Textilmaterials abgeleitet wird:
    • Dicke;
    • Reflektivität oder Absorption von Licht im sichtbaren und/oder infraroten und/oder ultravioletten Spektrum; und
    • Masse pro Längeneinheit oder lineare Dichte.
  7. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, wobei der mindestens eine Produktionsparameter (18) aus einer Messung mindestens einer der folgenden Eigenschaften abgeleitet wird:
    • Anwesenheit des fadenartigen Textilmaterials; und
    • Umlaufgeschwindigkeit des fadenartigen Textilmaterials.
  8. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, wobei jeder Sensor (3) des ersten und zweiten Sensors und eine zugeordnete Signalverarbeitungseinheit (8) in einer gemeinsamen Trägereinheit (26) oder getrennten Trägereinheiten (26) physikalisch angeordnet sind.
  9. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, wobei mehrere Sensoren (3) des ersten und zweiten Sensors und eine einzelne zugeordnete Signalverarbeitungseinheit (8) in einer gemeinsamen Trägereinheit (26) oder in getrennten Trägereinheiten (26) für die Sensoren physikalisch angeordnet sind.
  10. Ringspinnmaschine nach einem der Ansprüche 1 bis 9, die mehrere erste und zweite Sensoren (3) umfasst, die jeweils einer Spinnposition zugeordnet sind, wobei diese Sensoren (3) auf nicht beweglichen Teilen der Spinnmaschine montiert sind.
  11. Ringspinnmaschine nach einem der Ansprüche 1 bis 9, die mehrere Sensoren (3) umfasst, die jeweils einer Spinnposition zugeordnet sind, wobei diese Sensoren (3) auf beweglichen Teilen der Spinnmaschine montiert sind.
  12. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, wobei die ersten Sensoren (3) ausgelegt sind, um zwischen vorderen Walzen eines Strecksystems und einem Leitösen-Haken der Spinnposition Garnqualitätsparameter zu messen.
  13. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, wobei die mindestens eine Qualitätsmesseinheit (21) eine visuelle Anzeige mindestens eines Qualitätsparameters (19) und/oder Produktionsparameters (18) oder einer Abweichung eines solchen Parameters umfasst, und wobei die visuelle Anzeige insbesondere mindestens eine der folgenden Elemente umfasst:
    • eine Lampe (14), die betrieben werden kann, um in einer oder mehreren Farben beleuchtet zu werden, die einen oder mehrere Werte des Parameters oder der Abweichung anzeigen; oder
    • eine Lampe (14), die betrieben werden kann, um permanent oder blinkend beleuchtet zu werden, wobei dies einen oder mehrere Werte des Parameters oder der Abweichung anzeigt; oder
    • eine Lampe (14), die betrieben werden kann, um mit unterschiedlichen Frequenzen zu blinken, die einen oder mehrere Werte des Parameters oder der Abweichung anzeigen; oder
    • eine Anzeigeeinheit (12), die konfiguriert ist, einen oder mehrere Werte des Qualitätsparameters (19) anzuzeigen.
  14. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, die eine gemeinsame Anzeigeeinheit (12) umfasst, die konfiguriert ist, mindestens einen der folgenden Werte anzuzeigen:
    • einen oder mehrere Werte von Qualitätsparametern (19) aus den mehreren Qualitätsmesseinheiten (21); und
    • einen oder mehrere kombinierte Werte, die aus den Werten der Qualitätsparameter (19) aus mehreren Qualitätsmesseinheiten (21) berechnet worden sind, wobei derartige kombinierte Werte eine Gesamtqualität kennzeichnen, die die mehreren Qualitätsmesseinheiten (21) darstellt, und beispielsweise durch Addieren dieser Werte der Qualitätsparameter (19) und/oder durch Berechnen von statistischen Maßen aus diesen Werten berechnet wird.
  15. Ringspinnmaschine nach einem der vorhergehenden Ansprüche, die eine Überwachungseinheit umfasst, die konfiguriert ist,
    • mindestens einen Qualitätsparameter (19) eines kontinuierlich transportierten Garns (2) in mindestens einer Spinnposition der Spinnmaschine kontinuierlich zu überwachen;
    • basierend auf einer Online-Analyse des überwachten mindestens einen Qualitätsparameter (19), eine Fehlfunktion der mindestens einen Spinnposition oder eine unterdurchschnittliche Qualität des Vorgarnmaterials, das der Spinnposition zugeführt wird, zu identifizieren,
    wobei die Überwachungseinheit insbesondere konfiguriert ist,
    - dünne Stellen zu detektieren, und eine Fehlfunktion von Zuführspulen zu identifizieren, wenn zu viele dünne Stellen auftreten,
    - eine erste und eine zweite von zwei benachbarten Spinnpositionen mit einem ersten Qualitätsparameter, der an der ersten Spinnposition gemessen worden ist, und einem zweiten Qualitätsparameter, der an der zweiten Spinnposition gemessen worden ist, zu überwachen und eine Fehlfunktion von Streckwalzen für die zwei Spinnpositionen zu identifizieren, wenn der erste und der zweite Qualitätsparameter in der gleichen Weise abweichen;
    - zu detektieren, wenn die Dicke eines Garns (2) für eine Zeitdauer, die länger ist als eine zeitliche Begrenzung, von einer Referenzdicke abweicht, und eine Fehlfunktion des Strecksystems zu identifizieren, wenn dies detektiert worden ist; und/oder
    - einen oder mehrere Qualitätsparameter (19) zu überwachen und eine Abweichung des Titers auf der Grundlage dieser Qualitätsparameter (19) zu identifizieren.
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JP7316303B2 (ja) 2018-05-28 2023-07-27 ウステル・テヒノロジーズ・アクチエンゲゼルシヤフト リング精紡設備及びリング精紡設備を運転する方法
DE102018125368A1 (de) * 2018-10-12 2020-04-16 TRüTZSCHLER GMBH & CO. KG Textilmaschine mit einem Streckwerk
CN109295571A (zh) * 2018-11-20 2019-02-01 宁夏如意科技时尚产业有限公司 罗拉速度监控报警系统
DE102019116627A1 (de) * 2019-06-19 2020-12-24 Saurer Spinning Solutions Gmbh & Co. Kg Textilmaschine mit mehreren Arbeitsstellen sowie Verfahren zur Überwachung einer Textilmaschine mit mehreren Arbeitsstellen
CN113073408A (zh) * 2021-05-14 2021-07-06 江苏圣蓝科技有限公司 在线检测和判定转杯纺纱机纺纱部件故障的方法、装置和系统

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