EP3260584A1 - Method for optimizing the production of a rotor spinning machine - Google Patents
Method for optimizing the production of a rotor spinning machine Download PDFInfo
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- EP3260584A1 EP3260584A1 EP17173866.9A EP17173866A EP3260584A1 EP 3260584 A1 EP3260584 A1 EP 3260584A1 EP 17173866 A EP17173866 A EP 17173866A EP 3260584 A1 EP3260584 A1 EP 3260584A1
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- Prior art keywords
- spinning
- rotor
- delivery speed
- current
- spinning machine
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 107
- 238000007383 open-end spinning Methods 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009987 spinning Methods 0.000 claims abstract description 167
- 238000005265 energy consumption Methods 0.000 claims abstract description 44
- 230000001105 regulatory effect Effects 0.000 claims abstract description 30
- 238000012423 maintenance Methods 0.000 claims description 48
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 description 5
- 239000002657 fibrous material Substances 0.000 description 5
- 238000012806 monitoring device Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 241000239290 Araneae Species 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/42—Control of driving or stopping
- D01H4/44—Control of driving or stopping in rotor spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
- D01H4/12—Rotor bearings; Arrangements for driving or stopping
Definitions
- the present invention relates to a method for optimizing the production of a rotor spinning machine with a plurality of similar, each having a spinning rotor spinning stations.
- the spinning rotors are driven by at least one rotor drive and each revolve at a rotor speed, the spinning stations each providing a yarn at a delivery speed.
- the invention relates to a corresponding rotor spinning machine.
- the DE 10 2011 112 364 A1 Therefore, before to detect the number of thread breaks on the rotor spinning machine and automatically adjust the speed of the spinning rotors depending on the respectively determined yarn breakage rate.
- the yarn break rate should always be within a predetermined target range and below a maximum yarn break rate.
- the maximum acceptable yarn breakage rate results from the quality requirements of each produced yarn and from the capacity of the rotor spinning machine to fix yarn breaks. This can produce a high quality yarn with good productivity of the rotor spinning machine. Since the rotational speed of the spinning rotors is always reduced when the maximum permissible yarn breakage rate is exceeded, thus limiting production, the yarn production capacity of the rotor spinning machine can not be optimally utilized.
- Object of the present invention is therefore to propose a method for operating a rotor spinning machine, with which the production of the rotor spinning machine can be further improved. Furthermore, a corresponding rotor spinning machine to be proposed.
- the spinning rotors are driven by at least one rotor drive during operation of the rotor spinning machine and each run at a rotor speed.
- the spinning stations each provide a yarn at a delivery speed.
- a corresponding rotor spinning machine has a plurality of similar, each having a spinning rotor spinning stations and at least one rotor drive, by means of which the spinning rotors are driven during operation of the rotor spinning machine with a variable rotor speed.
- the rotor spinning machine has a take-off device on, by means of which a produced yarn with a delivery speed from the spinning stations is removable.
- a permissible range with a minimum delivery speed and a maximum delivery speed is set for the delivery speed of the spinning stations and that the spinning stations are put into operation with a starting delivery speed within the permissible range. Furthermore, a current production capacity of the spinning stations and / or the spinning machine is continuously calculated and the current delivery speed in response to the current production performance tracked so that always a maximum production capacity is achieved. Means are provided on the rotor spinning machine for this purpose, by means of which the current production output of the spinning stations and / or the spinning machine can be continuously calculated.
- a control and / or regulating unit is provided by means of which the delivery speed of the spinning stations within an allowable range with a minimum delivery speed and a maximum delivery speed is automatically controlled so that always a maximum production capacity is achieved.
- the production output can be recorded individually for each spinning station, for groups of spinning stations or even for the entire spinning machine.
- the production output of a spinning station or a rotor spinning machine is understood to be the total production of yarn in kilograms per hour or in units of length or mass per unit time.
- the speed of delivery of a spinning station is understood to mean the speed in meters per minute, by means of which the yarn is withdrawn from the spinning station.
- the yarn production in kilograms per hour or unit of time is calculated continuously, it is possible to track the delivery speed during operation and always set so that a maximum production capacity is achieved. It is therefore not necessary as in the prior art to set a maximum allowable yarn breakage rate, but the delivery speed can be increased even further, despite a high yarn breakage rate. Only when a decrease in the production output is determined with increasing delivery speed, the delivery speed is slightly reduced, so that the machine can then be operated with this value until a drop in production capacity requires a re-adjustment of the delivery speed.
- a current energy consumption of the spinning stations and / or the rotor spinning machine is calculated continuously.
- the delivery speed of the spinning stations becomes an allowable range with a minimum delivery speed and a maximum delivery speed and the spinning stations are put into operation with a starting delivery speed within the permissible range.
- the current delivery speed is tracked depending on the current energy consumption so that always a minimum energy consumption is achieved.
- At the spinning station or on the rotor spinning machine for this purpose means are provided by means of which the current energy consumption of the spinning machine is continuously calculated.
- a control and / or regulating unit is again provided by means of which the delivery speed of the spinning stations within the permissible range with a minimum delivery speed and a maximum delivery speed is automatically controlled so that always a minimum energy consumption is achieved.
- the energy consumption for each spinning station can be detected individually, for groups of spinning units or for the entire spinning machine and the delivery speed for each spinning station individually, for groups of spinning units or for the entire spinning machine are controlled together.
- the energy consumption of a rotor spinning machine is understood as the energy consumption in kWh per kilogram of yarn produced or also per meter of yarn produced. It is thus necessary, in addition to the actual current power consumption, to determine the associated, current mass in kg or quantity in m of yarn produced.
- the energy consumption in kilowatt-hours per kilogram of yarn By continuously calculating the energy consumption in kilowatt-hours per kilogram of yarn according to the present invention, it is possible to produce a certain amount of yarn with a minimum of energy, but nevertheless of good quality. This is particularly advantageous if due to local conditions only a limited amount of energy is available or the energy consumption must be reduced for cost reasons.
- the delivery speed is in turn lowered starting from a starting delivery speed until a minimum energy requirement is reached and only when the minimum delivery speed has been reached or increased by an increase in energy consumption, for example, by increased disturbances at low delivery speed again.
- the spinning stations and / or the rotor spinning machine is operated either with either the maximum production capacity or with the minimum energy consumption / are.
- the current production output and / or the current energy consumption are continuously calculated.
- Means are provided at the spinning stations and / or on the rotor spinning machine, by means of which the current production output and / or the current energy consumption can be continuously calculated, and the spinning station and / or the rotor spinning machine can be freely selected with the maximum by means of the control and / or regulating unit Production output or operated with the minimum energy consumption.
- This allows the machine to be used flexibly depending on local or temporary conditions and restrictions.
- the machine can be operated with the maximum production line, if energy is available in sufficient quantities and at low prices.
- the machine can also be operated with the minimum energy requirement, if, for example, at certain times increased electricity prices must be paid.
- the current production output and the current energy consumption are displayed. An operator can thus easily decide which of the two sizes, production output or energy consumption, the rotor spinning machine is to be operated.
- the machine can be operated according to a mixed optimization target or with a weighted part optimum from the maximum production output and the minimum energy consumption.
- the respective weighting is preferably selectable.
- the machine can basically be operated with a minimum of energy consumption, but at the same time a minimum production capacity to be set, which should not be undercut, otherwise the production would be too uneconomical overall.
- it may make sense to operate the machine generally with a maximum production capacity, but to specify a maximum energy consumption, from which no further increase in the delivery speed and thus the production capacity should be more.
- the current delivery speed and the current rotor speed of the spinning rotors are set such that yarn properties, in particular a yarn twist, of the yarn provided remain largely the same.
- the yarn properties always remain within predefined, permissible limits when tracking the delivery speed. It can thus be a yarn with a particularly high, uniform quality produced at all spinning positions of the rotor spinning machine.
- At least one current thread break rate, a current cleaner cut rate and a current service intervention rate and / or a current maintenance capacity are used.
- all interventions on the spinning stations, which are carried out at a spinning station such as rotor cleaning, bobbin change and the like.
- the maintenance capacity is understood to mean the ability to process a certain number of maintenance requests at the same time.
- the maintenance capacity is depending on the number of operators and / or the number of maintenance facilities, the supply of negative pressure and other factors. If a high maintenance capacity is available, even with a comparatively high delivery speed and a correspondingly high maintenance intervention rate, a good production output can still be achieved. Conversely, if many maintenance operations are required with low maintenance capacity, the production output will decrease, so that by reducing the delivery speed, the production output can be improved again.
- means are preferably provided on the rotor spinning machine by means of which a yarn breakage rate and / or a cleaner cut rate can be determined.
- a maintenance intervention rate can be determined. This can be provided within a control and / or regulating unit of a movable maintenance device or within a spinning unit's own control and / or regulating unit.
- a state of wear of the spinning rotors and / or downtimes of the spinning stations are used to calculate the current production output.
- means are preferably provided on the rotor spinning machine by means of which a state of wear of the spinning rotors can be determined.
- the means may include a device for detecting the operating time of the respective spinning rotor, from which it is possible to conclude the state of wear of the spinning rotor.
- the rotor spinning machine means for detecting downtime of the individual Spinning stations be present, which are then also used to calculate the current production capacity.
- Such downtime can arise, for example, due to excessive waiting times for maintenance operations or occur in defective spinning stations.
- the current delivery speed and the current rotor speed are automatically set and set by the rotor spinning machine. Achieving the optimum production output is thereby always ensured.
- the rotor spinning machine on the basis of the current production capacity, which is continuously calculated according to the described criteria, proposes values for the delivery speed and the rotor speed, which then still have to be confirmed by the operator. It is thereby possible to take into account other factors which affect the production performance, but can not be detected automatically by the rotor spinning machine, such as climatic conditions of the spinning environment or properties of the fiber material.
- the permissible range of the delivery speed is determined as a function of the maximum permissible rotor speed and / or the respective application and / or the respectively desired quality requirements and / or the climatic conditions of the spinning environment. These can be deposited, for example, at the start of spinning by an operator on the rotor spinning machine. Since the permissible range of the delivery speed is set in this way from the outset to a favorable range, the delivery speed may only have to be tracked by a small amount and it can be produced from the beginning as close as possible to the maximum possible production capacity of the rotor spinning machine.
- the delivery speed and the rotor speed are set separately for each rotor drive of the rotor spinning machine and be adjusted.
- the delivery speed and the rotor speed can be provided per machine side, a rotor drive and a drive for the trigger devices, so that the adjustment of the delivery speed and the rotor speed for each side of the machine. It is thereby possible to achieve a maximum of yarn production individually for each batch even with a multi-lot occupancy.
- each spinning station It is also advantageous if the delivery speed and the rotor speed are set separately for each spinning station.
- a rotor drive designed as a single drive as well as a drive designed as a single drive for the draw-off devices are provided at the individual spinning stations.
- individual conditions of each individual spinning station such as thermal conditions, tendency to fouling, wear state of the spinning rotor and the like can be taken into account, so that each spinning station is operated with an optimized delivery speed and an optimized rotor speed. This in turn optimizes the production capacity of the entire rotor spinning machine.
- the rotor spinning machine advantageously comprises display means, by means of which the production performance and / or the energy consumption related adjustment options can be displayed. Furthermore, the rotor spinning machine comprises input means, by means of which one or more of the displayed setting options can be selected and / or by means of which setting variables of the setting options can be set. In the simplest case, these configuration options can include the selection between the optimization criteria "maximum production output" and "minimum energy consumption”. Furthermore, the setting options may include the optimization criterion "weighted sub-optimum", wherein preferably the weighting of the two aforementioned optimization criteria can be set as the setting variable via the input means.
- the setting options may include the selection of the size to be tracked (delivery speed and / or rotor speed). From the setting options displayed, the operator can again select the desired option via the input device.
- the desired upper and lower energy consumption limits and / or the desired upper and lower production output limits can be set within which an optimization is to take place in each case.
- FIG. 1 shows a rotor spinning machine 1 with a plurality of juxtaposed spinning units 2, which each have a spinning rotor 3 as a spinning element.
- the spinning units 2 is in the usual way by means of a feed device 8, a fiber material 16 (see FIG. 2 ), which is dissolved in a dissolving device 9 in individual fibers and the spinning rotor 3 is supplied.
- the yarn 15 produced in the spinning rotor 3 is then drawn off via a drawing-off device 10 at a delivery speed and fed via a yarn monitoring device 6 to a winding device 11, where it is wound onto a bobbin 17.
- a central rotor drive 4 is provided, which drives the spinning rotors 3 of several spinning stations 2 in groups by means of a tangential belt 18.
- a single rotor drive 4 can be provided for all spinning stations 2 of the spinning machine 1, a separate rotor drive 4 for each side of the rotor spinning machine 1, or the spinning stations 2 of the rotor spinning machine 1 can also be subdivided into groups, which in turn each have its own rotor drive 4 assigned.
- the rotor spinning machine 1 a drive 14 for the discharge devices 10, which may be provided as well as the rotor drive 4 as a central drive for all spinning units 2 of the rotor spinning machine or for a group of spinning units 2 of the rotor spinning machine 1.
- one or more movable on a rail 13 maintenance facilities 12 are provided on the rotor spinning machine 1, which at the spinning stations 2 maintenance operations such as the correction of thread breaks, the yarn preparation after cleaning cuts, the bobbin change, the rotor cleaning and the like.
- the rotor spinning machine 1 has a control and / or regulating unit 5, which controls the one or more rotor drives 4 and the one or more drives 14 of the trigger devices 10 and other drives, which are not named here.
- the control and / or regulating unit 5 is connected to the maintenance device 12 for controlling or regulating organs of the maintenance device 12, as indicated by the dotted line.
- the control and / or regulating unit 5 is provided as the central control and / or regulating unit 5 of the rotor spinning machine 1 and is connected to a further control and / or regulating unit 5 of the service unit 12.
- the maintenance device 12 could also be controlled by the central control and / or regulating unit 5 of the rotor spinning machine 1.
- the individual spinning stations 2 can each have a corresponding control and / or regulating unit 5 which communicates with the control and / or regulating unit 5 of the rotor spinning machine 1 and / or the maintenance equipment 12 cooperates.
- rotor spinning machine 1 is therefore provided not to operate the spinning units 2 with a predetermined, constant delivery speed, but always to adjust the current delivery speed depending on the current production performance such that a maximum production capacity is achieved.
- means 22 are provided by means of which the current production output during operation can be continuously calculated.
- a corresponding formula is stored in the rotor spinning machine 1, which the current yarn production constantly based on the respective current delivery speed, the current yarn breakage rate, a current cleaner cut rate and a current maintenance capacity or calculated at a current service intervention rate.
- the delivery speed is then always adjusted within a previously defined, permissible range starting from a starting delivery speed in such a way that a maximum production output is achieved.
- 6 means 19 are provided on the rotor spinning machine 1 in the area of the yarn monitoring device, with which the yarn breakage rate of the respective spinning station 2 can be determined. If the yarn monitoring device 6 is additionally equipped with a yarn cleaning device, the means 19 are furthermore designed to detect a cleanser cut rate. Likewise, means 21 are provided in the maintenance device 12, by means of which a maintenance intervention rate on the rotor spinning machine 1 can be determined. The maintenance intervention rate can be determined as a total maintenance intervention rate for the entire rotor spinning machine 1 or separately for each individual spinning station 2.
- the maintenance capacity can be stored in the control and / or regulating unit 5 of the rotor spinning machine 1 and, if necessary, also be detected in the event of changes such as, for example, the removal of a maintenance device 12 or pauses of the personnel.
- the control and / or regulating unit 5 of the rotor spinning machine 1 further has means 21 which, based on the above-mentioned data and the values of the means 18 for determining the yarn break rate and / or the cleaner cut rate and the means 20 for determining the maintenance intervention rate, the current production capacity of the rotor spinning machine 1 calculated continuously using the stored formula.
- the control and / or regulating unit 5 then adjusts the current delivery speed via the drive 14 in such a way that a maximum of production output is achieved. This can mean that the delivery speed is increased if the current production output has fallen compared to an already determined production output. However, this can also mean that the current delivery speed is reduced If, after an increase in the delivery speed, the production output nevertheless drops.
- the actual yarn break rate, the current cleaner cut rate, the current service intervention rate and the maintenance capacity were used to calculate the current production output. But it is of course also possible to use other factors to calculate the current production performance, such as a state of wear of the spinning rotors and downtime, for which then appropriate means for detecting the state of wear 19 (see FIG. 2 ) and means for recording downtimes are provided.
- a state of wear of the spinning rotors and downtime for which then appropriate means for detecting the state of wear 19 (see FIG. 2 ) and means for recording downtimes are provided.
- the control and / or regulating unit 5 is able to drive the drive 14 of the draw-off devices 10 and the rotor drive 4 at a variable rotational speed.
- FIG. 2 shows a spinning station 2 another embodiment of a rotor spinning machine 1, in which the spinning rotors 3 as well as the trigger devices 10 are not driven by central drives, but by means of individual drives.
- the spinning station 2 of the FIG. 2 are provided with the same reference numerals as in the FIG. 1 , so that in the following only on the differences to the execution of the FIG. 1 will be received.
- the spinning rotors 3 are the FIG. 2 in each case by means of a arranged at the spinning station 2, driven as a single drive rotor drive 4 driven.
- the take-off devices 10 are driven by means of a single-drive drive 14.
- the means 19 for determining a yarn breakage rate and / or a cleaning cutter rate are shown.
- the individual spinning units 2 each provided with a spinning mill own maintenance device 12, which is at least able to fix thread breaks or re-spit after cleaner cuts.
- the spider's own maintenance device 12 preferably also includes its own device for rotor cleaning and possibly also its own device for changing bobbins.
- the maintenance device 12 furthermore contains means 21 for determining the maintenance intervention rate in the respective spinning station 2.
- means 20 for determining a state of wear of the spinning rotor 3 are arranged at the spinning station 2 shown.
- a rotor spinning machine 1 it is possible to detect the actual production output for each spinning station 2 individually and to optimize it individually at each spinning station 2 by a corresponding tracking of the delivery speed.
- the said means 19, 20, 21 are in turn connected to a control and / or regulating unit 5, which is advantageously provided at each individual spinning station.
- the control and / or regulating unit 5 in turn has means 21 for calculating the production output and is able to control the rotor drive 4 and the drive 14 of the extraction device 10 in such a way that a maximum production output is always achieved.
- the control of the drives 4, 14 and the calculation of the production output can also take place in a central control and / or regulating unit 5 of the rotor spinning machine 1.
- the maintenance capacity of the spinning machine 1 can also be stored here in a central control and / or regulating unit 5 and, if applicable, currently detected.
- the spinning machine 1 comprises display means and input means so that the various available setting options can be displayed to the operator and he can select them.
- the display means and input means may be provided, for example, within the control unit 5.
- the invention is not limited to the illustrated embodiments.
- rotor drives 4 may be provided as individual drives, as in Fig. 2 shown, however, the maintenance as in Fig. 1 be made by mobile maintenance facilities 12. Further modifications and combinations within the scope of the claims also fall under the invention.
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Abstract
Bei einem Verfahren zum Optimieren der Produktion einer Rotorspinnmaschine (1) werden im Betrieb der Rotorspinnmaschine (1) die Spinnrotoren (3) durch wenigstens einen Rotorantrieb (4) angetrieben. Die Spinnrotoren (3) laufen jeweils mit einer Rotordrehzahl um, wobei die Spinnstellen (2) jeweils ein Garn (15) mit einer Liefergeschwindigkeit bereitstellen. Für die Liefergeschwindigkeit wird ein zulässiger Bereich mit einer Mindestliefergeschwindigkeit und einer Höchstliefergeschwindigkeit festgelegt. Die Spinnstellen (2) werden mit einer innerhalb des zulässigen Bereichs liegenden Startliefergeschwindigkeit in Betrieb gesetzt, eine aktuelle Produktionsleistung der Spinnstellen und/oder der Rotorspinnmaschine (1) wird laufend berechnet und die aktuelle Liefergeschwindigkeit wird in Abhängigkeit von der aktuellen Produktionsleistung derart nachgeführt, dass eine maximale Produktionsleistung erreicht wird. Zusätzlich oder alternativ wird ein aktueller Energieverbrauch laufend berechnet und die aktuelle Liefergeschwindigkeit derart nachgeführt, dass ein minimaler Energieverbrauch erreicht wird. Bei einer entsprechenden Rotorspinnmaschine (1) sind Mittel (21) vorgesehen, mittels welcher eine aktuelle Produktionsleistung und/oder ein aktueller Energieverbrauch laufend berechenbar ist, sowie eine Steuer- und/oder Regelungseinheit (5), mittels welcher die Liefergeschwindigkeit der Spinnstellen (2) derart automatisch regelbar ist, dass eine maximale Produktionsleistung und/oder ein minimaler Energieverbrauch erreicht wird.In a method for optimizing the production of a rotor spinning machine (1), the spinning rotors (3) are driven by at least one rotor drive (4) during operation of the rotor spinning machine (1). The spinning rotors (3) each revolve at a rotor speed, the spinning stations (2) each providing a yarn (15) at a delivery speed. The delivery speed is set to a permissible range with a minimum delivery speed and a maximum delivery speed. The spinning stations (2) are put into operation with a starting delivery speed within the permissible range, a current production output of the spinning stations and / or the rotor spinning machine (1) is calculated continuously and the current delivery speed is adjusted in dependence on the current production output such that a maximum production capacity is achieved. Additionally or alternatively, a current energy consumption is calculated continuously and the current delivery speed adjusted so that a minimum energy consumption is achieved. In a corresponding rotor spinning machine (1) means (21) are provided, by means of which a current production performance and / or a current energy consumption is continuously calculated, and a control and / or regulating unit (5), by means of which the delivery speed of the spinning units (2) is automatically controlled so that a maximum production capacity and / or a minimum energy consumption is achieved.
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Optimieren der Produktion einer Rotorspinnmaschine mit einer Vielzahl von gleichartigen, jeweils einen Spinnrotor aufweisenden Spinnstellen. Im Betrieb der Rotorspinnmaschine werden die Spinnrotoren durch wenigstens einen Rotorantrieb angetrieben und laufen jeweils mit einer Rotordrehzahl um, wobei die Spinnstellen jeweils ein Garn mit einer Liefergeschwindigkeit bereitstellen. Weiterhin betrifft die Erfindung eine entsprechende Rotorspinnmaschine.The present invention relates to a method for optimizing the production of a rotor spinning machine with a plurality of similar, each having a spinning rotor spinning stations. During operation of the rotor spinning machine, the spinning rotors are driven by at least one rotor drive and each revolve at a rotor speed, the spinning stations each providing a yarn at a delivery speed. Furthermore, the invention relates to a corresponding rotor spinning machine.
In modernen Rotorspinnmaschinen besteht stets die Anforderung nach einer möglichst hohen Produktionsleistung, um die Spinnmaschine optimal ausnutzen und wirtschaftlich betreiben zu können. Es wurden daher im Stand der Technik Bemühungen unternommen, um die Rotordrehzahl und damit die Liefergeschwindigkeit steigern zu können und somit eine höhere Produktion zu erreichen. Einer solchen Produktionssteigerung durch Erhöhung der Liefergeschwindigkeit sind jedoch Grenzen gesetzt, da mit einer Erhöhung der Liefergeschwindigkeit stets auch eine Verringerung des Maschinennutzeffekts einhergeht, was die Produktionsleistung dann wiederum verringert. Beispielsweise kommt es bei einer höheren Liefergeschwindigkeit auch zu einem Ansteigen der Fadenbruchhäufigkeit und somit einem vorübergehenden Ausfall der Spinnstelle. Bei bekannten Spinnmaschinen wurde daher die Liefergeschwindigkeit aufgrund bisheriger Erfahrungen manuell derart eingestellt, dass sich ein vernünftiger Maschinennutzeffekt ergab. Ob durch die manuelle Auswahl der Liefergeschwindigkeit tatsächlich eine gute Produktion erreicht werden kann, hängt dabei sowohl von der Erfahrung des Bedieners als auch von einer Vielzahl weiterer, zum Teil nicht immer vorhersehbarer Einflüsse ab.In modern rotor spinning machines there is always the demand for the highest possible production capacity in order to be able to optimally utilize the spinning machine and to be able to operate it economically. Efforts have therefore been made in the prior art to be able to increase the rotor speed and thus the delivery speed and thus to achieve a higher production. However, there are limits to such an increase in production by increasing the delivery speed since an increase in the delivery speed is always accompanied by a reduction in the machine efficiency, which in turn reduces the production output. For example, it comes at a higher delivery speed also to an increase in the thread breakage frequency and thus a temporary failure of the spinning station. In known spinning machines, therefore, the delivery speed has been adjusted manually based on previous experience that resulted in a reasonable machine use effect. Whether the manual selection of the delivery speed actually achieves good production depends on the experience of the operator as well as on a large number of other factors, some of which are not always predictable.
Um die Produktionsleistung einer Offenendrotorspinnmaschine zu erhöhen, schlägt die
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren zum Betreiben eine Rotorspinnmaschine vorzuschlagen, mit welchem die Produktion der Rotorspinnmaschine weiter verbessert werden kann. Weiterhin soll eine entsprechende Rotorspinnmaschine vorgeschlagen werden.Object of the present invention is therefore to propose a method for operating a rotor spinning machine, with which the production of the rotor spinning machine can be further improved. Furthermore, a corresponding rotor spinning machine to be proposed.
Die Aufgabe wird gelöst mit den Merkmalen der unabhängigen Ansprüche.The object is solved with the features of the independent claims.
Bei einem Verfahren zum Optimieren der Produktion einer Rotorspinnmaschine mit einer Vielzahl von gleichartigen, jeweils einen Spinnrotor aufweisenden Spinnstellen werden im Betrieb der Rotorspinnmaschine die Spinnrotoren durch wenigstens einen Rotorantrieb angetrieben und laufen jeweils mit einer Rotordrehzahl um. Dabei stellen die Spinnstellen jeweils ein Garn mit einer Liefergeschwindigkeit bereit. Eine entsprechende Rotorspinnmaschine weist eine Vielzahl von gleichartigen, jeweils einen Spinnrotor aufweisenden Spinnstellen auf sowie wenigstens einen Rotorantrieb, mittels welchem die Spinnrotoren im Betrieb der Rotorspinnmaschine mit einer variablen Rotordrehzahl antreibbar sind. Weiterhin weist die Rotorspinnmaschine eine Abzugsvorrichtung auf, mittels welcher ein produziertes Garn mit einer Liefergeschwindigkeit aus den Spinnstellen abziehbar ist.In a method for optimizing the production of a rotor spinning machine having a multiplicity of identical spinning stations each having a spinning rotor, the spinning rotors are driven by at least one rotor drive during operation of the rotor spinning machine and each run at a rotor speed. The spinning stations each provide a yarn at a delivery speed. A corresponding rotor spinning machine has a plurality of similar, each having a spinning rotor spinning stations and at least one rotor drive, by means of which the spinning rotors are driven during operation of the rotor spinning machine with a variable rotor speed. Furthermore, the rotor spinning machine has a take-off device on, by means of which a produced yarn with a delivery speed from the spinning stations is removable.
Es ist nun vorgesehen, dass für die Liefergeschwindigkeit der Spinnstellen ein zulässiger Bereich mit einer Mindestliefergeschwindigkeit und einer Höchstliefergeschwindigkeit festgelegt wird und dass die Spinnstellen mit einer innerhalb des zulässigen Bereichs liegenden Startliefergeschwindigkeit im Betrieb gesetzt werden. Weiterhin wird eine aktuelle Produktionsleistung der Spinnstellen und/oder der Spinnmaschine laufend berechnet und die aktuelle Liefergeschwindigkeit in Abhängigkeit von der aktuellen Produktionsleistung derart nachgeführt, dass stets eine maximale Produktionsleistung erreicht wird. An der Rotorspinnmaschine sind hierzu Mittel vorgesehen, mittels welcher die aktuelle Produktionsleistung der Spinnstellen und/oder der Spinnmaschine laufend berechenbar ist. Weiterhin ist eine Steuer und oder Regelungseinheit vorgesehen, mittels welcher die Liefergeschwindigkeit der Spinnstellen innerhalb eines zulässigen Bereichs mit einer Mindestliefergeschwindigkeit und einer Höchstliefergeschwindigkeit derart automatisch regelbar ist, dass stets eine maximale Produktionsleistung erreicht wird. Die Produktionsleistung kann dabei für jede Spinnstelle einzeln, für Gruppen von Spinnstellen oder auch für die gesamte Spinnmaschine erfasst werden. Ebenso kann, unter anderem auch abhängig von der Bauart der Spinnmaschine, die Regelung der Liefergeschwindigkeit für jede Spinnstelle einzeln, für Gruppen von Spinnstellen oder auch für die gesamte Spinnmaschine gemeinsam erfolgen.It is now envisaged that a permissible range with a minimum delivery speed and a maximum delivery speed is set for the delivery speed of the spinning stations and that the spinning stations are put into operation with a starting delivery speed within the permissible range. Furthermore, a current production capacity of the spinning stations and / or the spinning machine is continuously calculated and the current delivery speed in response to the current production performance tracked so that always a maximum production capacity is achieved. Means are provided on the rotor spinning machine for this purpose, by means of which the current production output of the spinning stations and / or the spinning machine can be continuously calculated. Furthermore, a control and / or regulating unit is provided by means of which the delivery speed of the spinning stations within an allowable range with a minimum delivery speed and a maximum delivery speed is automatically controlled so that always a maximum production capacity is achieved. The production output can be recorded individually for each spinning station, for groups of spinning stations or even for the entire spinning machine. Likewise, among other things, depending on the design of the spinning machine, the regulation of the delivery speed for each spinning station individually, for groups of spinning stations or for the entire spinning machine done together.
Unter der Produktionsleistung einer Spinnstelle oder einer Rotorspinnmaschine wird dabei die Gesamtproduktion an Garn in Kilogramm pro Stunde bzw. in Längen- oder Masseneinheit je Zeiteinheit verstanden. Unter der Liefergeschwindigkeit einer Spinnstelle wird die Geschwindigkeit in Meter pro Minute verstanden, mittels welcher das Garn aus der Spinnstelle abgezogen wird.The production output of a spinning station or a rotor spinning machine is understood to be the total production of yarn in kilograms per hour or in units of length or mass per unit time. The speed of delivery of a spinning station is understood to mean the speed in meters per minute, by means of which the yarn is withdrawn from the spinning station.
Dadurch, dass gemäß der vorliegenden Erfindung die Garnproduktion in Kilogramm pro Stunde bzw. Zeiteinheit laufend berechnet wird, ist es möglich, die Liefergeschwindigkeit im laufenden Betrieb nachzuführen und dabei stets so einzustellen, dass eine maximale Produktionsleistung erreicht wird. Es ist daher nicht wie im Stand der Technik erforderlich, eine maximal zulässige Fadenbruchrate festzulegen, sondern die Liefergeschwindigkeit kann trotz einer hohen Fadenbruchrate noch weiter erhöht werden. Erst wenn bei steigender Liefergeschwindigkeit ein Absinken der Produktionsleistung festgestellt wird, wird die Liefergeschwindigkeit geringfügig reduziert, so dass die Maschine dann mit diesem Wert betrieben werden kann, bis ein Absinken der Produktionsleistung ein erneute Anpassung der Liefergeschwindigkeit erfordert.Characterized in that according to the present invention, the yarn production in kilograms per hour or unit of time is calculated continuously, it is possible to track the delivery speed during operation and always set so that a maximum production capacity is achieved. It is therefore not necessary as in the prior art to set a maximum allowable yarn breakage rate, but the delivery speed can be increased even further, despite a high yarn breakage rate. Only when a decrease in the production output is determined with increasing delivery speed, the delivery speed is slightly reduced, so that the machine can then be operated with this value until a drop in production capacity requires a re-adjustment of the delivery speed.
Da durch die laufende Berechnung der Produktionsleistung nicht nur die Fadenbruchrate, sondern eine Vielzahl weiterer Faktoren, welche den Maschinennutzeffekt beeinflussen, wie beispielsweise Wartungshäufigkeit u. ä. bei der Einstellung einer optimalen Liefergeschwindigkeit berücksichtigt werden können, ist es somit möglich, die einzelne Spinnstelle bzw. die Rotorspinnmaschine stets nahe an ihrem theoretisch möglichen, optimalen Wirkungsgrad zu betreiben. Besonders vorteilhaft ist es dabei, dass nicht nur Faktoren der Spinnmaschine selbst, sondern auch Einflüsse wie die klimatische Umgebung bzw. die Spinnbedingungen sowie Einflüsse des zu verspinnenden Fasermaterials berücksichtigt werden können. Probleme, die sonst mit einer Erhöhung der Liefergeschwindigkeit einhergehen wie eine erhöhte Wartungsbedürftigkeit, erhöhte Fadenbruchraten und dgl. können dabei dennoch vermieden werden.As a result of the ongoing calculation of the production output not only the yarn breakage rate, but a large number of other factors which influence the machine efficiency, such as maintenance frequency u. Ä. When setting an optimal delivery speed can be considered, it is thus possible to operate the individual spinning station or the rotor spinning machine always close to its theoretically possible, optimal efficiency. It is particularly advantageous that not only factors of the spinning machine itself, but also influences such as the climatic environment or the spinning conditions and influences of the fiber material to be spinned can be taken into account. Problems that would otherwise be associated with an increase in the delivery speed, such as an increased need for maintenance, increased yarn breakage rates and the like, can nevertheless be avoided.
Nach einer alternativen Ausführung der Erfindung wird hingegen nicht die aktuelle Produktionsleistung, sondern ein aktueller Energieverbrauch der Spinnstellen und/oder der Rotorspinnmaschine laufend berechnet. Dabei wird wiederum für die Liefergeschwindigkeit der Spinnstellen ein zulässiger Bereich mit einer Mindestliefergeschwindigkeit und einer Höchstliefergeschwindigkeit festgelegt und die Spinnstellen werden mit einer innerhalb des zulässigen Bereichs liegenden Startliefergeschwindigkeit in Betrieb gesetzt. Die aktuelle Liefergeschwindigkeit wird dabei in Abhängigkeit von dem aktuellen Energieverbrauch derart nachgeführt, dass stets ein minimaler Energieverbrauch erreicht wird. An der Spinnstelle oder an der Rotorspinnmaschine sind hierzu Mittel vorgesehen, mittels welcher der aktuelle Energieverbrauch der Spinnmaschine laufend berechenbar ist. Weiterhin ist wieder eine Steuer und/oder Regelungseinheit vorgesehen, mittels welcher die Liefergeschwindigkeit der Spinnstellen innerhalb des zulässigen Bereichs mit einer Mindestliefergeschwindigkeit und einer Höchstliefergeschwindigkeit derart automatisch regelbar ist, dass stets ein minimaler Energieverbrauch erreicht wird. Auch hier kann der Energieverbrauch für jede Spinnstelle einzeln, für Gruppen von Spinnstellen oder auch für die gesamte Spinnmaschine erfasst werden und die Liefergeschwindigkeit für jede Spinnstelle einzeln, für Gruppen von Spinnstellen oder auch für die gesamte Spinnmaschine gemeinsam geregelt werden.According to an alternative embodiment of the invention, however, not the current production capacity, but a current energy consumption of the spinning stations and / or the rotor spinning machine is calculated continuously. In turn, the delivery speed of the spinning stations becomes an allowable range with a minimum delivery speed and a maximum delivery speed and the spinning stations are put into operation with a starting delivery speed within the permissible range. The current delivery speed is tracked depending on the current energy consumption so that always a minimum energy consumption is achieved. At the spinning station or on the rotor spinning machine for this purpose means are provided by means of which the current energy consumption of the spinning machine is continuously calculated. Furthermore, a control and / or regulating unit is again provided by means of which the delivery speed of the spinning stations within the permissible range with a minimum delivery speed and a maximum delivery speed is automatically controlled so that always a minimum energy consumption is achieved. Again, the energy consumption for each spinning station can be detected individually, for groups of spinning units or for the entire spinning machine and the delivery speed for each spinning station individually, for groups of spinning units or for the entire spinning machine are controlled together.
Unter dem Energieverbrauch einer Rotorspinnmaschine wird dabei der Energieverbrauch in kWh je produziertem Kilogramm Garn oder auch je produzierten Meter Garn verstanden. Es ist somit erforderlich, neben der eigentlichen, aktuellen Leistungsaufnahme auch die zugehörige, aktuelle Masse in kg oder Menge in m an produziertem Garn zu ermitteln.The energy consumption of a rotor spinning machine is understood as the energy consumption in kWh per kilogram of yarn produced or also per meter of yarn produced. It is thus necessary, in addition to the actual current power consumption, to determine the associated, current mass in kg or quantity in m of yarn produced.
Dadurch, dass gemäß der vorliegenden Erfindung der Energieverbrauch in Kilowattstunden pro Kilogramm Garn laufend berechnet wird, ist es möglich, eine bestimmte Garnmenge mit einem minimalen Energieaufwand, aber dennoch guter Qualität zu produzieren. Dies ist insbesondere vorteilhaft, wenn aufgrund örtlicher Gegebenheiten nur eine begrenzte Energiemenge zu Verfügung steht oder der Energieverbrauch aus Kostengründen reduziert werden muss. Die Liefergeschwindigkeit wird dabei wiederum ausgehend von einer Startliefergeschwindigkeit solange abgesenkt, bis ein minimaler Energiebedarf erreicht wird und erst bei Erreichen der Mindestliefergeschwindigkeit oder bei einer Erhöhung des Energieverbrauchs bspw. durch vermehrte Störungen bei niedriger Liefergeschwindigkeit wieder erhöht.By continuously calculating the energy consumption in kilowatt-hours per kilogram of yarn according to the present invention, it is possible to produce a certain amount of yarn with a minimum of energy, but nevertheless of good quality. This is particularly advantageous if due to local conditions only a limited amount of energy is available or the energy consumption must be reduced for cost reasons. The delivery speed is in turn lowered starting from a starting delivery speed until a minimum energy requirement is reached and only when the minimum delivery speed has been reached or increased by an increase in energy consumption, for example, by increased disturbances at low delivery speed again.
Besonders vorteilhaft ist es dabei, wenn die Spinnstellen und/oder die Rotorspinnmaschine wahlweise entweder mit der maximalen Produktionsleistung oder mit dem minimalen Energieverbrauch betrieben wird/werden. Hierzu werden die aktuelle Produktionsleistung und/oder der aktuelle Energieverbrauch laufend berechnet. An den Spinnstellen und/oder an der Rotorspinnmaschine sind dazu Mittel vorgesehen, mittels welcher die aktuelle Produktionsleistung und/oder der aktuelle Energieverbrauch laufend berechenbar sind und die Spinnstelle und/oder die Rotorspinnmaschine ist mittels der Steuer- und/oder Regelungseinheit frei wählbar mit der maximalen Produktionsleistung oder mit dem minimalen Energieverbrauch betreibbar. Hierdurch kann die Maschine flexibel je nach örtlichen oder temporären Gegebenheiten und Einschränkungen eingesetzt werden. So kann die Maschine mit der maximalen Produktionsleitung betrieben werden, wenn Energie in ausreichendem Maß und zu günstigen Preisen verfügbar ist. Ebenso kann die Maschine jedoch auch mit dem minimalen Energiebedarf betrieben werden, wenn bspw. zu bestimmten Zeiten erhöhte Strompreise bezahlt werden müssen. Vorzugsweise werden dabei die aktuelle Produktionsleistung und der aktuelle Energieverbrauch angezeigt. Ein Bediener kann hierdurch einfach entscheiden, nach welcher der beiden Größen, Produktionsleistung oder Energieverbrauch, die Rotorspinnmaschine betrieben werden soll.It is particularly advantageous if the spinning stations and / or the rotor spinning machine is operated either with either the maximum production capacity or with the minimum energy consumption / are. For this, the current production output and / or the current energy consumption are continuously calculated. Means are provided at the spinning stations and / or on the rotor spinning machine, by means of which the current production output and / or the current energy consumption can be continuously calculated, and the spinning station and / or the rotor spinning machine can be freely selected with the maximum by means of the control and / or regulating unit Production output or operated with the minimum energy consumption. This allows the machine to be used flexibly depending on local or temporary conditions and restrictions. Thus, the machine can be operated with the maximum production line, if energy is available in sufficient quantities and at low prices. However, the machine can also be operated with the minimum energy requirement, if, for example, at certain times increased electricity prices must be paid. Preferably, the current production output and the current energy consumption are displayed. An operator can thus easily decide which of the two sizes, production output or energy consumption, the rotor spinning machine is to be operated.
Ebenso kann die Maschine nach einem gemischten Optimierungsziel bzw. mit einem gewichteten Teiloptimum aus der maximalen Produktionsleistung und dem minimalen Energieverbrauch betrieben werden. Dabei ist vorzugsweise die jeweilige Gewichtung wählbar. Mittels eines solchen Betriebs mit einem gewichteten Teiloptimum kann für jede Situation der jeweils beste Kompromiss aus hoher Produktionsleistung und niedrigem Energieverbrauch erreicht werden.Likewise, the machine can be operated according to a mixed optimization target or with a weighted part optimum from the maximum production output and the minimum energy consumption. In this case, the respective weighting is preferably selectable. By means of such operation with a weighted partial optimum, the best compromise of high production output and low energy consumption can be achieved for each situation.
So kann beispielsweise die Maschine zwar grundsätzlich mit einem minimalen Energieverbrauch betrieben werden, jedoch zugleich eine minimale Produktionsleistung vorgegeben werden, die nicht unterschritten werden soll, da andernfalls die Produktion insgesamt zu unwirtschaftlich würde. Ebenso kann es sinnvoll sein, die Maschine generell mit einer maximalen Produktionsleistung zu betreiben, dabei jedoch einen maximalen Energieverbrauch vorzugeben, ab welchem keine weitere Steigerung der Liefergeschwindigkeit und damit der Produktionsleistung mehr erfolgen soll.For example, while the machine can basically be operated with a minimum of energy consumption, but at the same time a minimum production capacity to be set, which should not be undercut, otherwise the production would be too uneconomical overall. Likewise, it may make sense to operate the machine generally with a maximum production capacity, but to specify a maximum energy consumption, from which no further increase in the delivery speed and thus the production capacity should be more.
Vorteilhaft ist es dabei, wenn bei der Nachführung der aktuellen Liefergeschwindigkeit der Spinnstellen die aktuelle Liefergeschwindigkeit und die aktuelle Rotordrehzahl der Spinnrotoren derart eingestellt werden, dass Garneigenschaften, insbesondere eine Garndrehung, des bereitgestellten Garns weitgehend gleich bleiben. Unter weitgehend gleich wird dabei verstanden, dass die Garneigenschaften bei der Nachführung der Liefergeschwindigkeit stets innerhalb vorgegebener, zulässiger Grenzen bleiben. Es kann somit ein Garn mit einer besonders hohen, gleichmäßigen Qualität an allen Spinnstellen der Rotorspinnmaschine erzeugt werden.It is advantageous if, when tracking the current delivery speed of the spinning stations, the current delivery speed and the current rotor speed of the spinning rotors are set such that yarn properties, in particular a yarn twist, of the yarn provided remain largely the same. For the most part, it is understood that the yarn properties always remain within predefined, permissible limits when tracking the delivery speed. It can thus be a yarn with a particularly high, uniform quality produced at all spinning positions of the rotor spinning machine.
Zur Berechnung der aktuellen Produktionsleistung ist es vorteilhaft, wenn neben der aktuellen Liefergeschwindigkeit zumindest eine aktuelle Fadenbruchrate, eine aktuelle Reinigerschnittrate sowie eine aktuelle Wartungseingriffsrate und/oder eine aktuelle Wartungskapazität herangezogen werden. Unter Wartungseingriffen werden im Rahmen der vorliegenden Anmeldung sämtliche Eingriffe an den Spinnstellen verstanden, welche bei stehender Spinnstelle durchgeführt werden, wie beispielsweise Rotorreinigung, Spulenwechsel und dgl. So kann beispielsweise bei Applikationen, bei welchen ein häufiger Spulenwechsel erforderlich ist, die Produktionsleistung durch häufige Spulenwechsel herabgesetzt werden, so dass eine etwas geringere Liefergeschwindigkeit eingestellt wird und umgekehrt. Unter der Wartungskapazität wird hingegen die Fähigkeit verstanden, eine bestimmte Anzahl von Wartungsanforderungen gleichzeitig abzuarbeiten. Die Wartungskapazität ist abhängig von der Anzahl der Bediener und/oder der Anzahl der Wartungseinrichtungen, der Versorgung mit Unterdruck und weiteren Einflussgrößen. Ist eine hohe Wartungskapazität vorhanden, so kann auch bei einer vergleichsweise hohen Liefergeschwindigkeit und einer entsprechend hohen Wartungseingriffsrate noch eine gute Produktionsleistung erzielt werden. Umgekehrt sinkt die Produktionsleistung, wenn viele Wartungseingriffe bei niedriger Wartungskapazität erforderlich sind, so dass dann durch eine Reduzierung der Liefergeschwindigkeit die Produktionsleistung wieder verbessert werden kann.To calculate the current production output, it is advantageous if, in addition to the current delivery speed, at least one current thread break rate, a current cleaner cut rate and a current service intervention rate and / or a current maintenance capacity are used. Under maintenance operations are understood in the present application, all interventions on the spinning stations, which are carried out at a spinning station, such as rotor cleaning, bobbin change and the like. Thus, for example, in applications where a frequent bobbin change is required, reduced production through frequent bobbin change be set so that a slightly lower delivery speed and vice versa. On the other hand, the maintenance capacity is understood to mean the ability to process a certain number of maintenance requests at the same time. The maintenance capacity is depending on the number of operators and / or the number of maintenance facilities, the supply of negative pressure and other factors. If a high maintenance capacity is available, even with a comparatively high delivery speed and a correspondingly high maintenance intervention rate, a good production output can still be achieved. Conversely, if many maintenance operations are required with low maintenance capacity, the production output will decrease, so that by reducing the delivery speed, the production output can be improved again.
An der Rotorspinnmaschine sind hierzu vorzugsweise Mittel vorgesehen, mittels welcher eine Fadenbruch- und/oder eine Reinigerschnittrate ermittelbar ist.For this purpose, means are preferably provided on the rotor spinning machine by means of which a yarn breakage rate and / or a cleaner cut rate can be determined.
Ebenso ist es vorteilhaft, wenn Mittel vorgesehen sind, mittels welcher eine Wartungseingriffsrate ermittelbar ist. Diese kann innerhalb einer Steuer-und/oder Regelungseinheit einer verfahrbaren Wartungseinrichtung oder innerhalb einer spinnstelleneigenen Steuer- und/oder Regelungseinheit vorgesehen sein.Likewise, it is advantageous if means are provided by means of which a maintenance intervention rate can be determined. This can be provided within a control and / or regulating unit of a movable maintenance device or within a spinning unit's own control and / or regulating unit.
Weiterhin ist es vorteilhaft, wenn zur Berechnung der aktuellen Produktionsleistung weiterhin ein Verschleißzustand der Spinnrotoren und/oder Stillstandszeiten der Spinnstellen herangezogen werden. So ist es beispielsweise möglich, bei wenig verschlissenen Spinnrotoren die Liefergeschwindigkeit zu erhöhen, um die Produktionsleistung weiterhin zu optimieren, ohne dabei jedoch eine erhöhte Wartungsanfälligkeit der Spinnstellen hervorzurufen. An der Rotorspinnmaschine sind hierzu vorzugsweise Mittel vorgesehen, mittels welcher ein Verschleißzustand der Spinnrotoren ermittelbar ist. Beispielsweise können die Mittel eine Einrichtung zum Erfassen der Betriebsdauer des jeweiligen Spinnrotors beinhalten, aus welcher auf den Verschleißzustand des Spinnrotors geschlossen werden kann. In derselben Weise können an der Rotorspinnmaschine Mittel zur Erfassung von Stillstandszeiten der einzelnen Spinnstellen vorhanden sein, welche dann ebenfalls zur Berechnung der aktuellen Produktionsleistung mit herangezogen werden. Derartige Stillstandszeiten können beispielsweise durch überlange Wartezeiten auf Wartungsvorgänge entstehen oder aber bei defekten Spinnstellen auftreten.Furthermore, it is advantageous if, furthermore, a state of wear of the spinning rotors and / or downtimes of the spinning stations are used to calculate the current production output. Thus, it is possible, for example, to increase the delivery speed with little worn spinning rotors in order to further optimize the production output, without, however, causing an increased maintenance susceptibility of the spinning stations. For this purpose, means are preferably provided on the rotor spinning machine by means of which a state of wear of the spinning rotors can be determined. For example, the means may include a device for detecting the operating time of the respective spinning rotor, from which it is possible to conclude the state of wear of the spinning rotor. In the same way can on the rotor spinning machine means for detecting downtime of the individual Spinning stations be present, which are then also used to calculate the current production capacity. Such downtime can arise, for example, due to excessive waiting times for maintenance operations or occur in defective spinning stations.
Nach einer besonders vorteilhaften Ausführung der Erfindung werden die aktuelle Liefergeschwindigkeit und die aktuelle Rotordrehzahl automatisch durch die Rotorspinnmaschine festgelegt und eingestellt. Das Erreichen des Produktionsleistungsoptimums ist hierdurch stets sichergestellt. Es ist jedoch ebenso denkbar, dass die Rotorspinnmaschine auf Basis der aktuellen Produktionsleistung, welche nach den beschriebenen Kriterien laufend berechnet wird, Werte für die Liefergeschwindigkeit und die Rotordrehzahl vorschlägt, welche dann vom Bediener noch bestätigt werden müssen. Es ist hierdurch möglich, noch weitere Faktoren zu berücksichtigen, welche die Produktionsleistung beeinflussen, aber durch die Rotorspinnmaschine nicht automatisch erfasst werden können, wie beispielsweise klimatische Bedingungen der Spinnumgebung oder Eigenschaften des Fasermaterials.According to a particularly advantageous embodiment of the invention, the current delivery speed and the current rotor speed are automatically set and set by the rotor spinning machine. Achieving the optimum production output is thereby always ensured. However, it is also conceivable that the rotor spinning machine on the basis of the current production capacity, which is continuously calculated according to the described criteria, proposes values for the delivery speed and the rotor speed, which then still have to be confirmed by the operator. It is thereby possible to take into account other factors which affect the production performance, but can not be detected automatically by the rotor spinning machine, such as climatic conditions of the spinning environment or properties of the fiber material.
Es ist daher auch vorteilhaft, wenn der zulässige Bereich der Liefergeschwindigkeit in Abhängigkeit von der maximal zulässigen Rotordrehzahl und/oder der jeweiligen Applikation und/oder der jeweils gewünschten Qualitätsanforderungen und/oder der klimatischen Bedingungen der Spinnumgebung festgelegt wird. Diese können beispielsweise zu Spinnbeginn von einem Bediener an der Rotorspinnmaschine hinterlegt werden. Da der zulässige Bereich der Liefergeschwindigkeit auf diese Weise von vornherein auf einen günstigen Bereich festgelegt wird, muss die Liefergeschwindigkeit unter Umständen nur um einen geringen Betrag nachgeführt werden und es kann von Anfang an möglichst nahe an der maximal möglichen Produktionskapazität der Rotorspinnmaschine produziert werden.It is therefore also advantageous if the permissible range of the delivery speed is determined as a function of the maximum permissible rotor speed and / or the respective application and / or the respectively desired quality requirements and / or the climatic conditions of the spinning environment. These can be deposited, for example, at the start of spinning by an operator on the rotor spinning machine. Since the permissible range of the delivery speed is set in this way from the outset to a favorable range, the delivery speed may only have to be tracked by a small amount and it can be produced from the beginning as close as possible to the maximum possible production capacity of the rotor spinning machine.
Besonders vorteilhaft ist es weiterhin, wenn die Liefergeschwindigkeit und die Rotordrehzahl für jeden Rotorantrieb der Rotorspinnmaschine separat festgelegt und eingestellt werden. Beispielsweise kann je Maschinenseite ein Rotorantrieb sowie ein Antrieb für die Abzugsvorrichtungen vorgesehen sein, so dass die Einstellung der Liefergeschwindigkeit und der Rotordrehzahl für jeweils eine Maschinenseite erfolgt. Es ist hierdurch möglich, auch bei einer Mehrpartienbelegung stets für jede Partie einzeln ein Maximum an Garnproduktion zu erreichen.It is furthermore particularly advantageous if the delivery speed and the rotor speed are set separately for each rotor drive of the rotor spinning machine and be adjusted. For example, can be provided per machine side, a rotor drive and a drive for the trigger devices, so that the adjustment of the delivery speed and the rotor speed for each side of the machine. It is thereby possible to achieve a maximum of yarn production individually for each batch even with a multi-lot occupancy.
Ebenso ist es vorteilhaft, wenn die Liefergeschwindigkeit und die Rotordrehzahl für jede Spinnstelle separat eingestellt werden. An den einzelnen Spinnstellen ist hierzu jeweils ein als Einzelantrieb ausgeführter Rotorantrieb sowie ein als Einzelantrieb ausgeführter Antrieb für die Abzugsvorrichtungen vorhanden. Somit können auch individuelle Gegebenheiten jeder einzelnen Spinnstelle wie thermische Bedingungen, Verschmutzungsneigung, Verschleißzustand des Spinnrotors und dergleichen berücksichtigt werden, so dass jede Spinnstelle mit einer optimierten Liefergeschwindigkeit und einer optimierten Rotordrehzahl betrieben wird. Hierdurch wird wiederum die Produktionsleistung der gesamten Rotorspinnmaschine optimiert.It is also advantageous if the delivery speed and the rotor speed are set separately for each spinning station. For this purpose, a rotor drive designed as a single drive as well as a drive designed as a single drive for the draw-off devices are provided at the individual spinning stations. Thus, individual conditions of each individual spinning station such as thermal conditions, tendency to fouling, wear state of the spinning rotor and the like can be taken into account, so that each spinning station is operated with an optimized delivery speed and an optimized rotor speed. This in turn optimizes the production capacity of the entire rotor spinning machine.
Die Rotorspinnmaschine umfasst vorteilhafterweise Anzeigemittel, mittels welcher die Produktionsleistung und/oder den Energieverbrauch betreffende Einstelloptionen anzeigbar sind. Weiterhin umfasst die Rotorspinnmaschine Eingabemittel, mittels welcher eine oder mehrere der angezeigten Einstelloptionen auswählbar sind und/oder mittels welcher Einstellgrößen der Einstelloptionen eingestellt werden können. Diese Einstelloptionen können im einfachsten Fall die Auswahl zwischen den Optimierungskriterien "maximale Produktionsleistung" und "minimaler Energieverbrauch" umfassen. Weiterhin können die Einstelloptionen das Optimierungskriterium "gewichtetes Teiloptimum" umfassen, wobei vorzugsweise die Gewichtung der beiden vorgenannten Optimierungskriterien als Einstellgröße über die Eingabemittel einstellbar ist.The rotor spinning machine advantageously comprises display means, by means of which the production performance and / or the energy consumption related adjustment options can be displayed. Furthermore, the rotor spinning machine comprises input means, by means of which one or more of the displayed setting options can be selected and / or by means of which setting variables of the setting options can be set. In the simplest case, these configuration options can include the selection between the optimization criteria "maximum production output" and "minimum energy consumption". Furthermore, the setting options may include the optimization criterion "weighted sub-optimum", wherein preferably the weighting of the two aforementioned optimization criteria can be set as the setting variable via the input means.
Denkbar ist es weiterhin, verschiedene Kriterien zur Berechnung der aktuellen Produktionsleistung, beispielsweise Fadenbruchrate, Reinigerschnittrate, Wartungseingriffsrate, Wartungskapazität, Verschleißzustand der Spinnrotoren oder Stillstandszeiten, als wählbare Einstelloptionen anzuzeigen. Weiterhin können die Einstelloptionen die Auswahl der nachzuführenden Größe (Liefergeschwindigkeit und/oder Rotordrehzahl) beinhalten. Aus den angezeigten Einstelloptionen kann der Bediener wiederum über die Eingabevorrichtung die jeweils gewünschte Option auswählen.It is also conceivable to display various criteria for calculating the current production output, such as yarn breakage rate, cleaning cut rate, service intervention rate, maintenance capacity, state of wear of the spinning rotors or downtimes, as selectable setting options. Furthermore, the setting options may include the selection of the size to be tracked (delivery speed and / or rotor speed). From the setting options displayed, the operator can again select the desired option via the input device.
Als weitere Einstellgrößen können nach einer vorteilhaften Ausführung der Erfindung die gewünschte obere und untere Energieverbrauchsgrenze und/oder die gewünschte obere und untere Produktionsleistungsgrenze eingestellt werden, innerhalb derer jeweils eine Optimierung stattfinden soll.As further adjustment variables, according to an advantageous embodiment of the invention, the desired upper and lower energy consumption limits and / or the desired upper and lower production output limits can be set within which an optimization is to take place in each case.
Weitere Vorteile werden anhand der nachfolgend dargestellten Ausführungsbeispiele beschrieben. Es zeigen:
- Figur 1
- eine Rotorspinnmaschine nach einer ersten Ausführung in einer schematischen Übersichtsdarstellung, sowie
- Figur 2
- eine schematische Schnittdarstellung einer Spinnstelle einer Rotorspinnmaschine gemäß einer zweiten Ausführung.
- FIG. 1
- a rotor spinning machine according to a first embodiment in a schematic overview, and
- FIG. 2
- a schematic sectional view of a spinning station of a rotor spinning machine according to a second embodiment.
Zum Antrieb der Spinnrotoren 3 ist gemäß der Ausführung der
Die Rotorspinnmaschine 1 verfügt über eine Steuer- und/oder Regelungseinheit 5, welche den oder die Rotorantriebe 4 sowie den oder die Antriebe 14 der Abzugsvorrichtungen 10 sowie weitere Antriebe, welche hier nicht benannt sind, ansteuert. Die Steuer- und/oder Regelungseinheit 5 ist mit der Wartungseinrichtung 12 zur Steuerung bzw. Regelung von Organen der Wartungseinrichtung 12 verbunden, wie durch die strichpunktierte Linie angedeutet. Die Steuer- und/oder Regelungseinheit 5 ist vorliegend als zentrale Steuer- und/oder Regelungseinheit 5 der Rotorspinnmaschine 1 vorgesehen und steht mit einer weiteren Steuer- und/oder Regelungseinheit 5 der Wartungseinrichtung 12 in Verbindung. Ebenso könnte jedoch auch die Wartungseinrichtung 12 durch die zentrale Steuer- und/oder Regelungseinheit 5 der Rotorspinnmaschine 1 angesteuert werden. Weiterhin können auch die die einzelnen Spinnstellen 2 jeweils eine entsprechende Steuer- und/oder Regelungseinheit 5 aufweisen, welche mit der Steuer- und/oder Regelungseinheit 5 der Rotorspinnmaschine 1 und/oder der Wartungseinrichtungen 12 zusammenwirkt.The rotor spinning machine 1 has a control and / or regulating unit 5, which controls the one or more rotor drives 4 and the one or more drives 14 of the trigger devices 10 and other drives, which are not named here. The control and / or regulating unit 5 is connected to the maintenance device 12 for controlling or regulating organs of the maintenance device 12, as indicated by the dotted line. In the present case, the control and / or regulating unit 5 is provided as the central control and / or regulating unit 5 of the rotor spinning machine 1 and is connected to a further control and / or regulating unit 5 of the service unit 12. Likewise, however, the maintenance device 12 could also be controlled by the central control and / or regulating unit 5 of the rotor spinning machine 1. Furthermore, the individual spinning stations 2 can each have a corresponding control and / or regulating unit 5 which communicates with the control and / or regulating unit 5 of the rotor spinning machine 1 and / or the maintenance equipment 12 cooperates.
Kommt es im Betrieb der Rotorspinnmaschine 1 zu einem Fadenbruch, so wird dies durch die Garnüberwachungseinrichtung 6 registriert, die weitere Zuführung des Fasermaterials 16 an die betreffende Spinnstelle 2 gestoppt und die Behebung des Fadenbruchs durch die Wartungseinrichtung 12 veranlasst. Da die betreffende Spinnstelle 2 bis zur Behebung des Fadenbruchs kein weiteres Garn 15 produziert, verringert sich hierdurch die Produktionsleistung der Spinnmaschine 1. Dasselbe Problem tritt auf, wenn durch die Garnüberwachungseinrichtung 6 Qualitätsprobleme des produzierten Garns 15 festgestellt werden und daraufhin ein Reinigerschnitt veranlasst wird. Ebenso kommt es durch weitere Wartungstätigkeiten der Wartungseinrichtung 12 wie Spulenwechsel, Rotorreinigung und dgl. zu Stillstandszeiten von Spinnstellen 2, welche sich negativ auf die Produktionsleistung auswirken. Das Problem der verringerten Produktionsleistung verschärft sich noch, wenn nur wenige Wartungseinrichtungen 12 vorhanden sind, oder wenn viele Wartungsanforderungen gleichzeitig bestehen und dadurch hohe Wartezeiten an den einzelnen Spinnstellen 2 entstehen. Zudem können nicht alle Wartungsanforderungen durch die Wartungseinrichtungen 12 behoben werden, sondern es ist oftmals auch ein Eingreifen eines Bedieners erforderlich.If there is a yarn breakage during operation of the rotor spinning machine 1, this is registered by the yarn monitoring device 6, the further feeding of the fiber material 16 to the respective spinning station 2 is stopped and the remedy of the yarn breakage caused by the service device 12. Since the respective spinning station 2 produces no further yarn 15 until the yarn breakage is eliminated, this reduces the production capacity of the spinning machine 1. The same problem occurs when quality problems of the yarn 15 produced are determined by the yarn monitoring device 6 and then a cleaner cut is initiated. Likewise, it comes through further maintenance activities of the maintenance device 12 such as bobbin change, rotor cleaning and the like. At downtime of spinning units 2, which have a negative effect on the production capacity. The problem of reduced production efficiency is exacerbated when only a few maintenance facilities 12 are present, or when many maintenance requirements exist simultaneously and thus high waiting times at the individual spinning stations 2 arise. In addition, not all maintenance requirements can be remedied by the maintenance facilities 12, but often an intervention of an operator is required.
Bei der vorliegenden Rotorspinnmaschine 1 ist daher vorgesehen, die Spinnstellen 2 nicht mit einer vorgegebenen, konstanten Liefergeschwindigkeit zu betreiben, sondern die aktuelle Liefergeschwindigkeit in Abhängigkeit von der aktuellen Produktionsleistung stets derart einzustellen, dass eine maximale Produktionsleistung erreicht wird. Es sind hierzu Mittel 22 vorgesehen, mittels welcher die aktuelle Produktionsleistung im Betrieb laufend berechnet werden kann. Hierzu ist in der Rotorspinnmaschine 1 eine entsprechende Formel hinterlegt, welche die aktuelle Garnproduktion ständig auf Basis der jeweils aktuellen Liefergeschwindigkeit, der aktuellen Fadenbruchrate, einer aktuellen Reinigerschnittrate sowie einer aktuellen Wartungskapazität bzw. einer aktuellen Wartungseingriffsrate berechnet. Die Liefergeschwindigkeit wird dann innerhalb eines zuvor definierten, zulässigen Bereichs ausgehend von einer Startliefergeschwindigkeit stets derart nachgeführt, dass eine maximale Produktionsleistung erreicht wird.In the present rotor spinning machine 1 is therefore provided not to operate the spinning units 2 with a predetermined, constant delivery speed, but always to adjust the current delivery speed depending on the current production performance such that a maximum production capacity is achieved. For this purpose, means 22 are provided by means of which the current production output during operation can be continuously calculated. For this purpose, a corresponding formula is stored in the rotor spinning machine 1, which the current yarn production constantly based on the respective current delivery speed, the current yarn breakage rate, a current cleaner cut rate and a current maintenance capacity or calculated at a current service intervention rate. The delivery speed is then always adjusted within a previously defined, permissible range starting from a starting delivery speed in such a way that a maximum production output is achieved.
Um die aktuelle Produktionsleistung anhand der angegebenen Faktoren berechnen zu können, sind an der Rotorspinnmaschine 1 im Bereich der Garnüberwachungseinrichtung 6 Mittel 19 vorgesehen, mit welcher die Fadenbruchrate der betreffenden Spinnstelle 2 ermittelt werden kann. Ist die Garnüberwachungseinrichtung 6 zusätzlich mit einer Garnreinigungseinrichtung ausgestattet, so sind die Mittel 19 weiterhin dazu ausgebildet, eine Reinigerschnittrate zu erfassen. Ebenso sind in der Wartungseinrichtung 12 Mittel 21 vorgesehen, mittels welcher eine Wartungseingriffsrate an der Rotorspinnmaschine 1 ermittelt werden kann. Die Wartungseingriffsrate kann dabei als Gesamtwartungseingriffsrate für die gesamte Rotorspinnmaschine 1 oder auch separat für jede einzelne Spinnstelle 2 ermittelt werden. Weiterhin kann in der Steuer- und/oder Regelungseinheit 5 der Rotorspinnmaschine 1 die Wartungskapazität hinterlegt und ggf. auch bei Änderungen wie beispielsweise bei Herausnahme einer Wartungseinrichtung 12 oder Pausen des Personals aktuell erfasst werden. Die Steuer- und/oder Regelungseinheit 5 der Rotorspinnmaschine 1 verfügt weiterhin über Mittel 21, welche anhand der vorbenannten Daten sowie der Werte der Mittel 18 zur Ermittlung der Fadenbruchrate und/oder der Reinigerschnittrate sowie der Mittel 20 zur Ermittlung der Wartungseingriffsrate die aktuelle Produktionsleistung der Rotorspinnmaschine 1 anhand der hinterlegten Formel laufend errechnet.In order to be able to calculate the current production output on the basis of the stated factors, 6 means 19 are provided on the rotor spinning machine 1 in the area of the yarn monitoring device, with which the yarn breakage rate of the respective spinning station 2 can be determined. If the yarn monitoring device 6 is additionally equipped with a yarn cleaning device, the means 19 are furthermore designed to detect a cleanser cut rate. Likewise, means 21 are provided in the maintenance device 12, by means of which a maintenance intervention rate on the rotor spinning machine 1 can be determined. The maintenance intervention rate can be determined as a total maintenance intervention rate for the entire rotor spinning machine 1 or separately for each individual spinning station 2. Furthermore, the maintenance capacity can be stored in the control and / or regulating unit 5 of the rotor spinning machine 1 and, if necessary, also be detected in the event of changes such as, for example, the removal of a maintenance device 12 or pauses of the personnel. The control and / or regulating unit 5 of the rotor spinning machine 1 further has means 21 which, based on the above-mentioned data and the values of the means 18 for determining the yarn break rate and / or the cleaner cut rate and the means 20 for determining the maintenance intervention rate, the current production capacity of the rotor spinning machine 1 calculated continuously using the stored formula.
Die Steuer- und/oder Regelungseinheit 5 regelt daraufhin die aktuelle Liefergeschwindigkeit über den Antrieb 14 derart nach, dass ein Maximum an Produktionsleistung erreicht wird. Dies kann bedeuten, dass die Liefergeschwindigkeit erhöht wird, wenn die aktuelle Produktionsleistung gegenüber einer bereits ermittelten Produktionsleistung abgesunken ist. Ebenso kann dies jedoch auch bedeuten, dass die aktuelle Liefergeschwindigkeit verringert wird, wenn es nach einer Erhöhung der Liefergeschwindigkeit dennoch zu einem Absinken der Produktionsleistung gekommen ist.The control and / or regulating unit 5 then adjusts the current delivery speed via the drive 14 in such a way that a maximum of production output is achieved. This can mean that the delivery speed is increased if the current production output has fallen compared to an already determined production output. However, this can also mean that the current delivery speed is reduced If, after an increase in the delivery speed, the production output nevertheless drops.
Nach vorliegendem Beispiel wurden zur Berechnung der aktuellen Produktionsleistung die aktuelle Fadenbruchrate, die aktuelle Reinigerschnittrate, die aktuelle Wartungseingriffsrate sowie die Wartungskapazität herangezogen. Es ist aber natürlich auch möglich, noch weitere Faktoren zur Berechnung der aktuellen Produktionsleistung, wie beispielsweise einen Verschleißzustand der Spinnrotoren sowie Stillstandszeiten heranzuziehen, wofür dann entsprechende Mittel zur Erfassung des Verschleißzustands 19 (siehe
Im Unterschied zu der Rotorspinnmaschine 1 der
Bei einer derartigen Rotorspinnmaschine 1 ist es möglich, die aktuelle Produktionsleistung für jede Spinnstelle 2 einzeln zu erfassen und an jeder Spinnstelle 2 einzeln durch eine entsprechende Nachführung der Liefergeschwindigkeit zu optimieren. Die genannten Mittel 19, 20, 21 sind hierzu wiederum mit einer Steuer- und/oder Regelungseinheit 5 verbunden, welche vorteilhafterweise an jeder einzelnen Spinnstelle vorgesehen ist. Die Steuerungs- und/oder Regelungseinheit 5 verfügt wiederum über Mittel 21 zur Berechnung der Produktionsleistung und ist in der Lage, den Rotorantrieb 4 sowie den Antrieb 14 der Abzugsvorrichtung 10 derart anzusteuern, dass stets eine maximale Produktionsleistung erreicht wird. Anstelle der hier gezeigten, spinnstelleneigenen Steuer- und/oder Regelungseinheit 5 kann die Steuerung der Antriebe 4, 14 sowie die Berechnung der Produktionsleistung aber natürlich auch in einer zentralen Steuer- und/oder Regelungseinheit 5 der Rotorspinnmaschine 1 erfolgen. Weiterhin kann auch hier in einer zentralen Steuer- und/oder Regelungseinheit 5 die Wartungskapazität der Spinnmaschine 1 hinterlegt sein und ggf. aktuell erfasst werden. Natürlich wäre es dabei auch denkbar, die aktuelle Produktionsleistung bzw. den aktuellen Energieverbrauch jeweils gruppenweise für mehrere Spinnstellen 2 zu erfassen und die Antriebe der Spinnmaschine 1 dabei vorzugsweise auch gruppenweise anzusteuern bzw. Gruppenantriebe vorzusehen.In such a rotor spinning machine 1, it is possible to detect the actual production output for each spinning station 2 individually and to optimize it individually at each spinning station 2 by a corresponding tracking of the delivery speed. The said means 19, 20, 21 are in turn connected to a control and / or regulating unit 5, which is advantageously provided at each individual spinning station. The control and / or regulating unit 5 in turn has means 21 for calculating the production output and is able to control the rotor drive 4 and the drive 14 of the extraction device 10 in such a way that a maximum production output is always achieved. Instead of the spinning-point-specific control and / or regulating unit 5 shown here, the control of the drives 4, 14 and the calculation of the production output, of course, can also take place in a central control and / or regulating unit 5 of the rotor spinning machine 1. Furthermore, the maintenance capacity of the spinning machine 1 can also be stored here in a central control and / or regulating unit 5 and, if applicable, currently detected. Of course, it would also be conceivable to record the current production output or the current energy consumption in groups in each case for several spinning stations 2 and to drive the drives of the spinning machine 1 preferably also in groups or to provide group drives.
Bei jeder der beschriebenen Ausführungen ist es vorteilhaft, wenn die Spinnmaschine 1 Anzeigemittel und Eingabemittel umfasst, so dass die verschiedenen zur Verfügung stehenden Einstelloptionen dem Bediener angezeigt werden können und er diese auswählen kann. Die Anzeigemittel und Eingabemittel können beispielsweise innerhalb der Steuereinheit 5 vorgesehen sein.In each of the embodiments described, it is advantageous if the spinning machine 1 comprises display means and input means so that the various available setting options can be displayed to the operator and he can select them. The display means and input means may be provided, for example, within the control unit 5.
Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt. Insbesondere sind beispielsweise auch Mischformen der in den
- 11
- RotorspinnmaschineRotor spinning machine
- 22
- Spinnstellenspinning units
- 33
- Spinnrotorspinning rotor
- 44
- Rotorantriebrotor drive
- 55
- Steuer- und/oder RegelungseinheitControl and / or regulating unit
- 66
- GarnüberwachungseinrichtungGarnüberwachungseinrichtung
- 77
- Gestellframe
- 88th
- Speisevorrichtungfeeder
- 99
- Auflösevorrichtungdissolver
- 1010
- Abzugsvorrichtungoff device
- 1111
- Spulvorrichtungspooling device
- 1212
- Wartungseinrichtungmaintenance facility
- 1313
- Schienerail
- 1414
- Antrieb der AbzugsvorrichtungenDrive of the extraction devices
- 1515
- Garnyarn
- 1616
- Fasermaterialfiber material
- 1717
- SpuleKitchen sink
- 1818
- Tangentialriementangential
- 1919
- Mittel zur Ermittlung der Fadenbruch- und/oder ReinigerschnittrateMeans for determining the thread break and / or cleaning cut rate
- 2020
- Mittel zur Ermittlung des Verschleißzustands des SpinnrotorsMeans for determining the state of wear of the spinning rotor
- 2121
- Mittel zur Ermittlung der WartungseingriffsrateMeans for determining the service intervention rate
- 2222
- Mittel zur Berechnung der aktuellen ProduktionsleistungMeans of calculating the current production output
Claims (18)
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DE102016116727 | 2016-09-07 |
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US (2) | US10519574B2 (en) |
EP (1) | EP3260584B1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
US20200131674A1 (en) | 2020-04-30 |
US10519574B2 (en) | 2019-12-31 |
CN114164526A (en) | 2022-03-11 |
US20170362746A1 (en) | 2017-12-21 |
CN107523906B (en) | 2021-11-16 |
EP3260584B1 (en) | 2021-10-27 |
DE102017112080A1 (en) | 2017-12-21 |
CN114164526B (en) | 2023-08-18 |
CN107523906A (en) | 2017-12-29 |
US11280029B2 (en) | 2022-03-22 |
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