EP3642401B1 - Method and device for melt-spinning synthetic threads - Google Patents
Method and device for melt-spinning synthetic threads Download PDFInfo
- Publication number
- EP3642401B1 EP3642401B1 EP18728629.9A EP18728629A EP3642401B1 EP 3642401 B1 EP3642401 B1 EP 3642401B1 EP 18728629 A EP18728629 A EP 18728629A EP 3642401 B1 EP3642401 B1 EP 3642401B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spinning
- robot
- spinneret
- nozzle
- nozzles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/04—Cleaning spinnerettes or other parts of the spinnerette packs
Definitions
- the invention relates to a method for melt-spinning synthetic threads according to the preamble of claim 1 and a device for melt-spinning a plurality of threads according to the preamble of claim 9.
- auxiliary equipment that partially takes over the mechanical work such as scraping the nozzle plates.
- auxiliary device for scraping spinnerets.
- the known auxiliary device can be moved and can thus be fed to one of several spinnerets of a spinning position.
- the tools for scraping the nozzle plates can also be guided automatically.
- a method for treating spinnerets is from JP S60 39404 A known.
- a further object of the invention is to provide a method and a device for melt-spinning synthetic threads in which the process changes to be carried out to carry out maintenance can be carried out automatically.
- this object is achieved for a method in that at least one maintenance time for servicing at least one of the spinnerets is predetermined or determined by a machine control device and that when it is reached of the maintenance time by the machine control device, a control command for activating a spinneret robot is generated, which at least initiates the maintenance of the spinneret.
- the solution for the apparatus for melt-spinning synthetic filaments is that a spinneret robot is provided with a robot controller for maintaining the spinnerets, and that the robot controller is connected to the machine controller.
- the invention has the particular advantage that the regularly occurring maintenance work on the spinneret is integrated into the process control. For example, favorable operating situations such as a yarn breakage can be used to use the resulting process interruption to maintain one of the spinnerets. Due to the combination according to the invention between the machine control device and a robot control device, pending maintenance can be carried out immediately. Thus, when the maintenance time is reached, a control command for activating a spinneret robot is generated, which at least initiates the maintenance of the spinnerets. The maintenance time for servicing one of the spinnerets is predetermined within the process control or determined using process parameters.
- the maintenance times can be determined by continuously monitoring at least one operating parameter of the spinnerets. It is known that the filter elements in the spinning nozzles become increasingly dirty as the operating time progresses. In this respect, for example, an operating pressure could be continuously monitored and controlled as an operating parameter of the spinneret. As soon as an impermissible increase in pressure is registered, a spinneret replacement is required to change or clean the filter element.
- the underside of the spinneret is more or less burdened by deposits.
- the variant of the method is preferably designed to determine the maintenance time for scraping a spinneret.
- the operating time can be determined by a number of operating hours and/or a number of wound bobbins and/or a number of thread breaks that a spinneret can be used without cleaning the underside.
- the method variant is preferably carried out in which the control command contains several signal sequences that can be read by the spinneret robot, through which a position of the spinneret, a replacement of the spinneret unit and / or a nozzle plate cleaning of a spinneret unit are transmitted . It is therefore possible for the spinneret robot to scrape or exchange the spinnerets in a targeted manner with the desired tools.
- Each of the maintenance work is carried out by the spinneret robot with different tools.
- the tools can be guided through a number of robot arms or alternately through a robot arm of the spinneret robot.
- the variant of the method is particularly advantageous which the spinneret robot repeatedly moves out of a base station and stops and positions itself in one of several maintenance positions.
- the spinneret robot is only taken out of the base station for maintenance work. Otherwise the spinneret robot remains in its base station.
- the method variant is used in which the control command simultaneously triggers a thread cut of the thread after winding a full bobbin and a pump stop of the multiple spinning pump. In this respect, the respective spinning position is ready to receive the spinneret robot to carry out the maintenance work.
- the device according to the invention for melt-spinning synthetic threads has the great advantage that the maintenance work on the spinning nozzles can be carried out fully automatically without the use of an operator.
- the connection between the machine control device and the robot control device ensures a constant exchange of data both on the upcoming maintenance work and on the procedure and the end of the maintenance work.
- the robot control unit can generate a signal when maintenance work in the spinneret is complete.
- the control device has at least one control algorithm, by means of which a maintenance time for maintenance of at least one of the spinnerets can be determined and monitored. In this way, a direct activation command to the robot control device can be determined by the machine control device at the time of maintenance.
- a work sequence is defined by the machine control device or by the robot control device, preferably depending on the shortest possible downtimes.
- the development of the device according to the invention can be used advantageously, in which the control device is connected to a sensor for monitoring an operating parameter of one of the spinnerets.
- a pressure sensor could be used to monitor a spin pressure of the spinnerets.
- the development of the device according to the invention is preferably implemented, in which the control device is coupled to at least one counting device, by which a number of operating hours and / or a number of wound coils and/or a number of thread breaks can be detected. So it is usual that a thread breakage sensor for monitoring a thread run is connected to the machine control device in order to be able to carry out appropriate process changes. Thus, the thread breaks occurring within a period of operation can be determined in a simple manner in order to draw conclusions about possible maintenance intervals.
- the spinneret robot has at least one tool for detaching one of the spinnerets from the spinning beam and/or a tool for scraping a nozzle plate of one of the Has spinnerets.
- a corresponding signal can be triggered via the machine control device that the spinneret robot moves to the respective spinning position with the corresponding tool.
- the spinneret robot preferably has a robot arm with a change holder for alternately receiving one of the tools for guiding the tools, or alternatively several robot arms.
- the spinneret robot is preferably guided in a self-propelled manner on a monorail, which extends along a base station and several maintenance positions.
- a monorail which extends along a base station and several maintenance positions.
- the spinneret robot can be kept in a base station during the maintenance-free time, in which the tools can be checked.
- the connection to a spinneret processing device is also particularly advantageous here, in order to make the exchange of the spinnerets fully automatic.
- the spinneret robot could give the removed spinneret to the spinneret preparation device and take over a new, already preheated spinneret and use it in the appropriate spinning position.
- a first exemplary embodiment of the device according to the invention is shown schematically in several views and several operating situations, with only the components relevant for explaining the invention being shown.
- the embodiment is shown in a front view in a normal operating state.
- the exemplary embodiment is shown in a side view, with the manufacturing process being interrupted in order to carry out maintenance.
- the embodiment of the device according to the invention consists of a spinning device 1, which has a plurality of spinning positions.
- a first spinning position 1.1 is shown in its entirety and an adjacent spinning position 1.2 is only partially shown.
- the spinning positions 1.1 and 1.2 have several spinning positions, with a thread being produced in each spinning position. In this case, six spinning positions 2.1 to 2.6 are provided per spinning position 1.1 and 1.2.
- the spinning positions 1.1 and 1.2 of Spinning device 1 are usually identical, so that the structure of the spinning station 1.1 is explained.
- the spinning station 1.1 has a spinning beam 3 which extends over all spinning positions 2.1 to 2.6.
- the spinning beam is heated and has several spinnerets on its underside. In this embodiment, a total of six spinnerets 4.1 to 4.6 are shown.
- the spinning nozzles 4.1 to 4.6 are detachably held on the spinning beam 3.
- a multiple spinning pump 5 is arranged on the upper side of the spinning beam 3 .
- the multiple spinning pump 5 is driven by a pump drive 5.1 and controlled by the pump control unit 5.2.
- the multiple spinning pump 5 has a melt inlet 6 on an inlet side.
- the multiple spinning pump 5 is connected to a melt source, not shown here, for example an extruder, via the melt inlet 6 .
- the multiple spinning pump 5 is connected to the spinning nozzles 4.1 to 4.6 via a distribution line system 7.
- the pump control device 5.2 is connected to a machine control device 12.
- a cooling device 8 is provided below the spinning beam 3 in the spinning position 1.1 in order to cool a filament bundle extruded through the spinning nozzles 4.1 to 4.6.
- the cooling device 8 has a cooling shaft 8.1 and a laterally arranged blowing chamber 8.2, which are separated from one another by a blowing wall 8.3. In that regard, a flow of cooling air is generated transversely to the filament sheet.
- cooling device 8 shown is an example.
- other cooling systems can also be used, for example to allow cooling air to act on the filaments radially from the outside to the inside.
- each filament bundle 10 of one of the spinnerets 4.1 to 4.6 would be encased by a gas-permeable cooling cylinder.
- the height of the cooling cylinders would be adjustable so that access to the spinnerets is possible.
- each of the spinnerets 4.1 to 4.6 is assigned a collecting thread guide 9 in order to form a thread 11 from the filament bundles 10 in each case.
- a base station 24 of a spinneret robot 15 is formed laterally next to the spinning station 1.1.
- the spinneret robot 15 is guided on a suspension track 16, which runs parallel to a machine front side of the spinning positions 2.1 to 2.6.
- the monorail 16 extends within the spinning device 1 over all spinning stations 1.1 and 1.2.
- the spinneret robot 15 is guided via a chassis 17 on the monorail 16, with a travel drive not shown here being integrated into the spinneret robot 15.
- the spinneret robot 15 has a robot arm 20 in this exemplary embodiment.
- the robot arm 20 has a tool holder 21 at its free end.
- the spinneret robot 15 is assigned a tool station 23 that holds several tools 22.1 and 22.2.
- the Tool 22.1 has a device for scraping the nozzle plates held on the undersides of the spinnerets 4.1 to 4.6
- tool 22.2 has a device for releasing one of the spinnerets 4.1 to 4.6 from the spinning beam 3.
- the spinnerets 4.1 to 4.6 are fixed to the spinning beam 3, for example, via a bayonet lock.
- the tools 22.1 and 22.2 can optionally be picked up by the robot arm 20 on the tool holder 21.
- a robot control device 18 is provided for controlling the spinneret robot 15 .
- the robot control device 18 is connected to the machine control device 12 via a control line, preferably a wireless radio link 19 .
- a receiver 19.1 is indicated on the robot control device 18 and a transmitter 19.2 on the machine control device 12.
- the spinning device 1 is shown in an operating state in which a polymer melt is extruded into a plurality of filaments 10 at each spinneret 4.1 to 4.6 of the spinning station 1.1.
- the polymer melt is fed under pressure by means of the multiple spinning pump 5 to the spinning nozzles 4.1 to 4.6.
- the undersides of the spinnerets 4.1 to 4.6 are each formed by a nozzle plate (not shown here), which must be cleaned in certain maintenance cycles.
- the maintenance time for scraping the spinning nozzles 4.1 to 4.6 is preferably determined in the machine control device 12 using control algorithms. For example, the time between two maintenance cycles could be replaced by an operating time be predetermined. In this case, the control device has a simple counting unit that records the number of operating hours. When the maximum operating time is reached, the time for maintenance has been reached.
- the flow rate extruded through the spinneret as a benchmark for the next maintenance.
- a number of wound coils could be recorded and continuously added up by a counting unit.
- the amount of thread weight gives direct information about the flow rate when extruding the polymer melt.
- the maintenance time is reached when a maximum specified amount of thread has been produced.
- process disturbances can also be used to obtain information about the surface properties of the spinneret plates. It is known that a narrowing of the nozzle openings on the nozzle plates favors the yarn breakage rate. In this respect, there is also the possibility that the counting unit records a number of yarn breaks in the spinning position 1.1. In the 1 For this purpose, it is indicated by a dashed representation that a yarn breakage sensor 14 is connected to the machine control device 12 .
- control device can be given different limit values for the operating hours, the wound bobbins or yarn breaks, so that depending on the limit value, a maintenance time for scraping the spinnerets or a maintenance time for replacing the spinnerets is reached.
- a determination of the maintenance time for replacing the spinneret is preferably carried out by directly monitoring an operating parameter.
- the distribution line system 7 is assigned a pressure sensor 13 .
- the pressure sensor 13 is connected to the machine control device 12 .
- An operating pressure for extruding the polymer melt can thus be continuously monitored.
- the spinnerets 4.1 to 4.6 have a filter element, not shown here, which becomes increasingly soiled as the operating time progresses, an increase in the operating pressure is to be expected.
- a maximum operating pressure can be assigned to the spinnerets 4.1 to 4.6, which determines an exchange of the respective spinneret.
- a control command to the robot control unit 18 is determined via the control line 19.
- the control command preferably has a signal sequence from which the information required for the use of the spinneret robot 15 is contained.
- the exact spinning position of one of the spinning positions 2.1 to 2.6 is thus transmitted to the robot control device 18 with the control command.
- the robot control device 18 receives the information about the pending maintenance work, whether the spinneret needs to be replaced or the spinneret needs to be cleaned. Accordingly, the robot control unit 18 selects the relevant tool 22.1 or 22.2.
- the robot arm 20 removes the relevant tool 22.1 or 22.2 from the tool station 23. Then the spinneret robot 15 moves from the base station 24 to the relevant maintenance position, which is one of the spinning positions 2.1 to 2.1 2.6 is assigned. The spinneret robot 15 fixes itself in the maintenance position and starts the maintenance process via positioning means that are not shown in detail here.
- the spinneret robot 15 has to carry out a nozzle plate cleaning on the spinneret 4.1.
- the robot arm 20 carries the tool 22.1 on its tool holder 21, which is used for scraping the nozzle plates.
- the spinneret robot 15 is fixed in the maintenance position shown, so that the robot arm 20 with the tool 22.1 is guided to the underside of the spinneret 4.1.
- spinneret 4.1 After the spinneret 4.1 has been cleaned, all adjacent spinnerets 4.2 to 4.6 of the spinning station 1.1 are cleaned one after the other. However, there is also the possibility that only individual spinnerets of a spinning position 1.1 or 1.2 are cleaned. Since the spinnerets 4.1 to 4.6 of one of the spinning positions 1.1 and 1.2 are supplied by a spinning pump 5, all spinnerets 4.1 to 4.6 are inevitably shut down during maintenance, so that all spinnerets would be ready for maintenance.
- the end of maintenance is signaled by the robot control device 18 so that the machine control device 12 can start the process again.
- the spinneret robot 15 is returned to its base station 24 .
- the spinneret robot 15 is able to selectively use different tools to perform maintenance work. In principle, however, there is also the possibility of designing the spinneret robot 15 only for one maintenance activity.
- the spinneret robot 15 for this is in 3 another embodiment of an inventive Apparatus for melt spinning multiple filaments shown. The embodiment after 3 is essentially identical to the embodiment according to FIG 1 , so that at this point only the differences are explained and otherwise reference is made to the above description.
- the difference is in the design of the spinneret robot 15.
- the in 3 Spinneret robot 15 shown has a robot arm 20.1, which has a permanently installed tool 22.1 at its free end.
- the tool 22.1 is provided for cleaning the undersides of the spinnerets.
- the spinneret robot 15 can only be used for scraping the spinnerets.
- the spinneret robot 15 has two separate robot arms 20.1 and 20.2.
- the second robot arm 20.2 is in 3 shown dashed.
- a different tool 22.1 and 22.2 is carried on each of the robot arms 20.1 and 20.2.
- the spinneret robot 15 can use either the robot arm 20.1 to scrape an underside of a spinneret or the robot arm 20.2 to change the spinneret on the spinning beam.
- both robot arms 20.1 and 20.2 can also be used simultaneously to scrape several spinnerets or to change the spinnerets.
- the spinneret robot could also have more than two robot arms, so that several spinnerets are scraped at the same time. As a result, maintenance work times can be significantly reduced.
- the method according to the invention and the device according to the invention for melt-spinning synthetic threads are characterized in that all maintenance activities on the spinning nozzles can be carried out automatically.
- the base station 24 is directly assigned a spinneret processing station.
- the spinneret robot 15 can exchange it for a new spinneret in the base station 24 and fix it again on the underside of the spinning beam.
- the link between the machine control device of the spinning device and the robot control device of the spinneret robot has the great advantage that undesired process interruptions due to process disruptions can also be used to maintain the spinnerets.
- a comparison between the maintenance times and the process control takes place within the machine control device.
- the method according to the invention and the device according to the invention for melt-spinning synthetic threads ensure a uniform production quality of the threads due to strict compliance with maintenance intervals.
- small amounts of waste and downtimes can be generated in the production of the threads due to the automated execution of the maintenance work by the spinneret robot.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Schmelzspinnen von synthetischen Fäden gemäß dem Oberbegriff des Anspruchs 1 sowie eine Vorrichtung zum Schmelzspinnen mehrerer Fäden gemäß dem Oberbegriff des Anspruchs 9.The invention relates to a method for melt-spinning synthetic threads according to the preamble of
Bei der Herstellung von synthetischen Fäden ist es üblich, dass ein zuvor aufgeschmolzenes Polymer mittels einer Spinnpumpe unter hohem Druck mehreren Spinndüsen zugeführt wird. Die Spinndüsen weisen jeweils an ihren Unterseiten eine Düsenplatte mit einer Mehrzahl von Düsenöffnungen auf, so dass die Polymerschmelze in feinste Filamentstränge extrudiert wird. Die Filamente werden dann nach dem Extrudieren und nach einer Abkühlung jeweils zu einem Faden zusammengefasst. In Abhängigkeit von dem jeweiligen Herstellungsverfahren werden die Fäden gemeinsam durch Galetten abgezogen, verstreckt und am Ende des Prozesses zu Spulen aufgewickelt. Der Herstellungsprozess wird überwacht und derart gesteuert, dass die Fäden möglichst kontinuierlich herstellbar sind.In the production of synthetic threads, it is common for a previously melted polymer to be fed to a number of spinnerets under high pressure by means of a spinning pump. The spinnerets each have a nozzle plate with a plurality of nozzle openings on their undersides, so that the polymer melt is extruded into extremely fine filament strands. The filaments are then combined into a thread after extrusion and after cooling. Depending on the respective manufacturing process, the threads are drawn off together through godets, stretched and wound up into spools at the end of the process. The manufacturing process is monitored and controlled in such a way that the threads can be produced as continuously as possible.
In der Praxis werden derartige Herstellungsprozesse zum Schmelzspinnen mehrerer Fäden jedoch regelmäßig durch Wartungsarbeiten an den Spinndüsen unterbrochen. So gehört das sogenannte Schaben der Düsenplatten einer Spinndüse zu einer wiederkehrenden Wartung, die in regelmäßigen Zeitabständen durchzuführen ist. Hierbei wird die Unterseite der Spinndüse von Materialablagerungen befreit, damit die Düsenöffnungen frei bleiben. Desweiteren sind die innerhalb von Spinndüsen angeordneten Filterelemente nicht unendlich einsetzbar, so dass ein regelmäßiger Austausch der Spinndüsen erfolgen muss. Diese Wartungsarbeiten werden üblicherweise durch einen Operator durchgeführt, der diese nach Bedarf ausführt.In practice, however, such manufacturing processes for melt-spinning multiple filaments are regularly interrupted by maintenance work on the spinnerets. So-called scraping of the nozzle plates of a spinneret is part of recurring maintenance that has to be carried out at regular intervals. Here, the underside of the spinneret is freed from material deposits so that the nozzle openings remain free. Furthermore, the filter elements arranged within spinnerets cannot be used indefinitely, so that regular replacement of the Spinnerets must be done. This maintenance work is usually carried out by an operator who carries it out as required.
Zur Unterstützung der Wartungsarbeiten setzt der Operator Hilfseinrichtungen ein, die teilweise die mechanischen Arbeiten wie beispielsweise das Schaben der Düsenplatten, übernehmen.To support the maintenance work, the operator uses auxiliary equipment that partially takes over the mechanical work such as scraping the nozzle plates.
So ist beispielsweise aus der
Ein Verfahren zum Behandeln von Spinndüsen ist aus der
Es ist nun Aufgabe der Erfindung, ein Verfahren und eine Vorrichtung zum Schmelzspinnen synthetischer Fäden dahingehend zu verbessern, dass die anstehenden Wartungsarbeiten an den Spinndüsen möglichst schnell und gezielt ausführbar sind.It is now the object of the invention to improve a method and a device for melt-spinning synthetic threads in such a way that the pending maintenance work on the spinning nozzles can be carried out as quickly and specifically as possible.
Ein weiteres Ziel der Erfindung liegt darin, ein Verfahren und eine Vorrichtung zum Schmelzspinnen synthetischer Fäden bereitzustellen, dass die zur Ausführung einer Wartung vorzunehmenden Prozessänderungen automatisiert durchführbar sind.A further object of the invention is to provide a method and a device for melt-spinning synthetic threads in which the process changes to be carried out to carry out maintenance can be carried out automatically.
Diese Aufgabe wird erfindungsgemäß für ein Verfahren dadurch gelöst, dass durch eine Maschinensteuereinrichtung zumindest ein Wartungszeitpunkt zum Warten zumindest einer der Spinndüsen vorbestimmt oder ermittelt wird und dass bei einem Erreichen des Wartungszeitpunktes durch die Maschinensteuereinrichtung ein Steuerbefehl zur Aktivierung eines Spinndüsenroboters generiert wird, der die Wartung der Spinndüsen zumindest einleitet.According to the invention, this object is achieved for a method in that at least one maintenance time for servicing at least one of the spinnerets is predetermined or determined by a machine control device and that when it is reached of the maintenance time by the machine control device, a control command for activating a spinneret robot is generated, which at least initiates the maintenance of the spinneret.
Die Lösung für die Vorrichtung zum Schmelzspinnen von synthetischen Fäden liegt erfindungsgemäß darin, dass ein Spinndüsenroboter mit einem Robotersteuergerät zur Wartung der Spinndüsen vorgesehen ist und dass das Robotersteuergerät mit der Maschinensteuereinrichtung verbunden ist.According to the invention, the solution for the apparatus for melt-spinning synthetic filaments is that a spinneret robot is provided with a robot controller for maintaining the spinnerets, and that the robot controller is connected to the machine controller.
Vorteilhafte Weiterbildungen der Erfindung sind durch die Merkmale und Merkmalskombinationen der jeweiligen Unteransprüche definiert.Advantageous developments of the invention are defined by the features and feature combinations of the respective dependent claims.
Die Erfindung besitzt den besonderen Vorteil, dass die regelmäßig anfallenden Wartungsarbeiten an den Spinndüsen in die Prozesssteuerung eingebunden sind. So können beispielsweise günstige Betriebssituationen wie z.B. ein Fadenbruch genutzt werden, um die daraus resultierende Prozessunterbrechung zur Wartung einer der Spinndüsen zu nutzen. Durch die erfindungsgemäße Kombination zwischen der Maschinensteuereinrichtung und einem Robotersteuergerät lassen sich anstehende Wartungen unmittelbar ausführen. So wird bei Erreichen des Wartungszeitpunktes ein Steuerbefehl zur Aktivierung eines Spinndüsenroboters generiert, der die Wartung der Spinndüsen zumindest einleitet. Der Wartungszeitpunkt zum Warten einer der Spinndüsen wird innerhalb der Prozesssteuerung vorbestimmt oder anhand von Prozessparametern ermittelt.The invention has the particular advantage that the regularly occurring maintenance work on the spinneret is integrated into the process control. For example, favorable operating situations such as a yarn breakage can be used to use the resulting process interruption to maintain one of the spinnerets. Due to the combination according to the invention between the machine control device and a robot control device, pending maintenance can be carried out immediately. Thus, when the maintenance time is reached, a control command for activating a spinneret robot is generated, which at least initiates the maintenance of the spinnerets. The maintenance time for servicing one of the spinnerets is predetermined within the process control or determined using process parameters.
So lassen sich insbesondere die Wartungszeitpunkte durch eine kontinuierliche Überwachung zumindest eines Betriebsparameters der Spinndüsen ermitteln. Mit fortlaufender Betriebsdauer ist eine zunehmende Verschmutzung der Filterelemente in den Spinndüsen bekannt. Insoweit könnte beispielsweise ein Betriebsdruck als Betriebsparameter der Spinndüse kontinuierlich überwacht und kontrolliert werden. Sobald ein unzulässiger Druckanstieg registriert wird, ist ein Austausch der Spinndüse erforderlich, um das Filterelement auszuwechseln oder zu reinigen.In particular, the maintenance times can be determined by continuously monitoring at least one operating parameter of the spinnerets. It is known that the filter elements in the spinning nozzles become increasingly dirty as the operating time progresses. In this respect, for example, an operating pressure could be continuously monitored and controlled as an operating parameter of the spinneret. As soon as an impermissible increase in pressure is registered, a spinneret replacement is required to change or clean the filter element.
Grundsätzlich ist es auch bekannt, dass in Abhängigkeit von dem Polymertyp die Unterseiten der Spinndüsen mehr oder weniger durch Ablagerungen belastet sind. Insoweit ist die Verfahrensvariante bevorzugt ausgeführt, um den Wartungszeitpunkt zum Schaben einer Spinndüse zu bestimmen. So kann die Betriebsdauer durch eine Anzahl von Betriebsstunden und / oder einer Anzahl von gewickelten Spulen und / oder einer Anzahl von Fadenbrüchen bestimmt sein, die eine Spinndüse ohne Reinigung der Unterseiten einsetzbar ist.Basically, it is also known that, depending on the type of polymer, the underside of the spinneret is more or less burdened by deposits. In this respect, the variant of the method is preferably designed to determine the maintenance time for scraping a spinneret. The operating time can be determined by a number of operating hours and/or a number of wound bobbins and/or a number of thread breaks that a spinneret can be used without cleaning the underside.
Damit die anstehende Wartungsarbeit durch den Spinndüsenroboter zielgerichtet ausgeführt werden kann, ist die Verfahrensvariante bevorzugt ausgeführt, bei welcher der Steuerbefehl mehrere von dem Spinndüsenroboter einlesbare Signalfolgen enthält, durch welche eine Positionsangabe der Spinndüse, ein Austausch der Spinndüseneinheit und / oder eine Düsenplattenreinigung einer Spinndüseneinheit übermittelt werden. Damit besteht die Möglichkeit, dass der Spinndüsenroboter zielgerichtet mit den gewünschten Werkzeugen ein Schaben oder ein Austausch der Spinndüsen vornimmt.So that the upcoming maintenance work can be carried out in a targeted manner by the spinneret robot, the method variant is preferably carried out in which the control command contains several signal sequences that can be read by the spinneret robot, through which a position of the spinneret, a replacement of the spinneret unit and / or a nozzle plate cleaning of a spinneret unit are transmitted . It is therefore possible for the spinneret robot to scrape or exchange the spinnerets in a targeted manner with the desired tools.
Dabei wird jede der Wartungsarbeiten durch den Spinndüsenroboter mit unterschiedlichen Werkzeugen ausgeführt.Each of the maintenance work is carried out by the spinneret robot with different tools.
Die Werkzeuge können dabei durch mehrere Roboterarme oder abwechselnd durch einen Roboterarm des Spinndüsenroboters geführt werden.The tools can be guided through a number of robot arms or alternately through a robot arm of the spinneret robot.
Um insbesondere die Werkzeuge des Spinndüsenroboters durch einen Operator prüfen zu können, ist die Verfahrensvariante besonders vorteilhaft, bei welcher der Spinndüsenroboter wiederkehrend aus einer Basisstation herausfährt und in einer von mehreren Wartungspositionen anhält und sich positioniert. So wird der Spinndüsenroboter nur im Fall einer Wartungsarbeit aus der Basisstation herausgeführt. Ansonsten verbleibt der Spinndüsenroboter in seiner Basisstation.In order to be able to check the tools of the spinneret robot in particular by an operator, the variant of the method is particularly advantageous which the spinneret robot repeatedly moves out of a base station and stops and positions itself in one of several maintenance positions. The spinneret robot is only taken out of the base station for maintenance work. Otherwise the spinneret robot remains in its base station.
Für den Fall, dass der Wartungszeitpunkt nicht mittels einer anstehenden Prozessstörung kombiniert werden kann, wird die Verfahrensvariante genutzt, bei welcher der Steuerbefehl gleichzeitig einen Fadenschnitt des Fadens nach einem Wickel einer Vollspule und einen Pumpenstopp der Mehrfachspinnpumpe auslöst. Insoweit ist die jeweilige Spinnposition bereit, um den Spinndüsenroboter zur Ausführung der Wartungsarbeiten zu empfangen.In the event that the maintenance time cannot be combined by means of a pending process fault, the method variant is used in which the control command simultaneously triggers a thread cut of the thread after winding a full bobbin and a pump stop of the multiple spinning pump. In this respect, the respective spinning position is ready to receive the spinneret robot to carry out the maintenance work.
Die erfindungsgemäße Vorrichtung zum Schmelzspinnen von synthetischen Fäden besitzt den großen Vorteil, dass die Wartungsarbeiten an den Spinndüsen vollautomatisiert ohne Einsatz eines Operators durchführbar sind. Durch die Verbindung zwischen der Maschinensteuereinrichtung und dem Robotersteuergerät ist ein ständiger Datenaustausch sowohl über die anstehenden Wartungsarbeiten als auch über den Ablauf und über das Ende der Wartungsarbeit gewährleistet. So lässt sich durch das Robotersteuergerät ein Signal erzeugen, wenn die Wartungsarbeiten in der Spinndüse beendet sind.The device according to the invention for melt-spinning synthetic threads has the great advantage that the maintenance work on the spinning nozzles can be carried out fully automatically without the use of an operator. The connection between the machine control device and the robot control device ensures a constant exchange of data both on the upcoming maintenance work and on the procedure and the end of the maintenance work. The robot control unit can generate a signal when maintenance work in the spinneret is complete.
Die Steuereinrichtung weist dabei zumindest einen Steueralgorithmus auf, durch welchen ein Wartungszeitpunkt zur Wartung zumindest einer der Spinndüsen bestimmbar und überwachbar ist. So lässt sich zum Wartungszeitpunkt durch die Maschinensteuereinrichtung ein direkter Aktivierungsbefehl an das Robotersteuergerät ermitteln.The control device has at least one control algorithm, by means of which a maintenance time for maintenance of at least one of the spinnerets can be determined and monitored. In this way, a direct activation command to the robot control device can be determined by the machine control device at the time of maintenance.
Für den Fall, dass mehrere Wartungsarbeiten durch den Spinndüsenroboter auszuführen sind, wird durch die Maschinensteuereinrichtung oder durch das Robotersteuergerät eine Arbeitsfolge vorzugsweise in Abhängigkeit möglichst kurzer Ausfallzeiten festgelegt.In the event that several maintenance jobs have to be carried out by the spinneret robot, a work sequence is defined by the machine control device or by the robot control device, preferably depending on the shortest possible downtimes.
Um den Wartungszeitpunkt der Spinndüsen oder einer Gruppe von Spinndüsen zu ermitteln, ist die Weiterbildung der erfindungsgemäßen Vorrichtung vorteilhaft einsetzbar, bei welcher die Steuereinrichtung mit einem Sensor zur Überwachung eines Betriebsparameters einer der Spinndüsen verbunden ist. So könnte beispielsweise ein Drucksensor genutzt werden, um einen Spinndruck der Spinndüsen zu überwachen.In order to determine the maintenance time of the spinnerets or a group of spinnerets, the development of the device according to the invention can be used advantageously, in which the control device is connected to a sensor for monitoring an operating parameter of one of the spinnerets. For example, a pressure sensor could be used to monitor a spin pressure of the spinnerets.
Für den Fall, dass der wiederkehrende Wartungszeitpunkt im wesentlichen von der Betriebsdauer bestimmt ist, ist die Weiterbildung der erfindungsgemäßen Vorrichtung bevorzugt ausgeführt, bei welcher die Steuereinrichtung mit zumindest einer Zähleinrichtung gekoppelt ist, durch welche eine Anzahl von Betriebsstunden und / oder eine Anzahl von gewickelten Spulen und / oder eine Anzahl von Fadenbrüchen erfassbar ist. So ist es üblich, dass ein Fadenbruchsensor zur Überwachung eines Fadenlaufs mit der Maschinensteuereinrichtung verbunden ist, um entsprechende Prozessänderungen ausführen zu können. Somit lassen sich die innerhalb einer Betriebsdauer auftretenden Fadenbrüche in einfacher Art und Weise ermitteln, um daraus Rückschlüsse über mögliche Wartungsintervalle zu erhalten.In the event that the recurring maintenance time is essentially determined by the operating time, the development of the device according to the invention is preferably implemented, in which the control device is coupled to at least one counting device, by which a number of operating hours and / or a number of wound coils and/or a number of thread breaks can be detected. So it is usual that a thread breakage sensor for monitoring a thread run is connected to the machine control device in order to be able to carry out appropriate process changes. Thus, the thread breaks occurring within a period of operation can be determined in a simple manner in order to draw conclusions about possible maintenance intervals.
Damit die Wartungsarbeiten zielgerichtet an den Spinndüsen ausgeführt werden können, ist des Weiteren vorgesehen, dass der Spinndüsenroboter zumindest ein Werkzeug zum Lösen einer der Spinndüsen aus dem Spinnbalken und / oder ein Werkzeug zum Schaben einer Düsenplatte eines der Spinndüsen aufweist. So lässt sich bereits bei der Aktivierung des Spinndüsenroboters über die Maschinensteuereinrichtung eine entsprechende Signalgebung auslösen, dass der Spinndüsenroboter mit dem entsprechenden Werkzeug die jeweilige Spinnposition anfährt.So that the maintenance work can be carried out on the spinnerets in a targeted manner, it is also provided that the spinneret robot has at least one tool for detaching one of the spinnerets from the spinning beam and/or a tool for scraping a nozzle plate of one of the Has spinnerets. Thus, when the spinneret robot is activated, a corresponding signal can be triggered via the machine control device that the spinneret robot moves to the respective spinning position with the corresponding tool.
Hierbei weist der Spinndüsenroboter vorzugsweise zur Führung der Werkzeuge einen Roboterarm mit einem Wechselhalter zur abwechselnden Aufnahme einer der Werkzeuge oder alternativ mehrere Roboterarme auf.In this case, the spinneret robot preferably has a robot arm with a change holder for alternately receiving one of the tools for guiding the tools, or alternatively several robot arms.
Zur Vermeidung von Kollisionen wird der Spinndüsenroboter vorzugsweise selbstfahrend an einer Hängebahn geführt, die sich entlang einer Basisstation und mehreren Wartungspositionen erstreckt. Insoweit besteht die Möglichkeit, dass der Spinndüsenroboter während der wartungsfreien Zeit in einer Basisstation gehalten werden kann, in welcher die Werkzeuge kontrollierbar sind. Besonders vorteilhaft ist hierbei auch die Anbindung an eine Spinndüsenaufbereitungseinrichtung, um den Austausch der Spinndüsen voll automatisch zu gestalten. So könnte beispielsweise der Spinndüsenroboter die ausgebaute Spinndüse an der Spinndüsenaufbereitungseinrichtung geben und eine neue bereits vorgewärmte Spinndüse übernehmen und in der entsprechenden Spinnposition einsetzen.In order to avoid collisions, the spinneret robot is preferably guided in a self-propelled manner on a monorail, which extends along a base station and several maintenance positions. In this respect, there is the possibility that the spinneret robot can be kept in a base station during the maintenance-free time, in which the tools can be checked. The connection to a spinneret processing device is also particularly advantageous here, in order to make the exchange of the spinnerets fully automatic. For example, the spinneret robot could give the removed spinneret to the spinneret preparation device and take over a new, already preheated spinneret and use it in the appropriate spinning position.
Das erfindungsgemäße Verfahren zum Schmelzspinnen von synthetischen Fäden sowie die erfindungsgemäße Vorrichtung zum Schmelzspinnen von synthetischen Fäden werden nachfolgend anhand einiger Ausführungsbeispiele der erfindungsgemäßen Vorrichtung näher erläutert.The method according to the invention for melt-spinning synthetic threads and the device according to the invention for melt-spinning synthetic threads are explained in more detail below with reference to some exemplary embodiments of the device according to the invention.
Es stellen dar:
- Fig. 1
- schematisch eine Vorderansicht eines Ausführungsbeispiels der erfindungsgemäßen Vorrichtung zum Schmelzspinnen
- Fig. 2
- schematisch eine Seitenansicht des Ausführungsbeispiels der erfindungsgemäßen Vorrichtung zum Schmelzspinnen
- Fig. 3
- schematisch eine Vorderansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung
- 1
- schematically shows a front view of an embodiment of the device for melt spinning according to the invention
- 2
- schematically a side view of the embodiment of the device according to the invention for melt spinning
- 3
- schematically a front view of a further embodiment of the device according to the invention
In den
Das Ausführungsbeispiel der erfindungsgemäßen Vorrichtung wird zunächst anhand beider Figuren wie folgt erläutert.The exemplary embodiment of the device according to the invention is initially explained as follows with reference to both figures.
Das Ausführungsbeispiel der erfindungsgemäßen Vorrichtung besteht aus einer Spinneinrichtung 1, die eine Mehrzahl von Spinnstellen aufweist. In diesem Ausführungsbeispiel ist eine erste Spinnstelle 1.1 komplett und eine benachbarte Spinnstelle 1.2 nur teilweise gezeigt. Die Spinnstellen 1.1 und 1.2 weisen mehrere Spinnpositionen auf, wobei in jeder Spinnposition ein Faden erzeugt wird. In diesem Fall sind sechs Spinnpositionen 2.1 bis 2.6 pro Spinnstelle 1.1 und 1.2 vorgesehen. Die Spinnstellen 1.1 und 1.2 der Spinneinrichtung 1 sind üblicherweise identisch ausgeführt, so dass der Aufbau an der Spinnstelle 1.1 erläutert wird.The embodiment of the device according to the invention consists of a
Die Spinnstelle 1.1 weist einen Spinnbalken 3 auf, der sich über alle Spinnpositionen 2.1 bis 2.6 erstreckt. Der Spinnbalken ist beheizt ausgeführt und trägt an einer Unterseite mehrere Spinndüsen. In diesem Ausführungsbeispiel sind insgesamt sechs Spinndüsen 4.1 bis 4.6 dargestellt. Die Spinndüsen 4.1 bis 4.6 sind lösbar an dem Spinnbalken 3 gehalten.The spinning station 1.1 has a
An der Oberseite des Spinnbalkens 3 ist eine Mehrfachspinnpumpe 5 angeordnet. Die Mehrfachspinnpumpe 5 wird über einen Pumpenantrieb 5.1 angetrieben und über das Pumpensteuergerät 5.2 gesteuert. Auf einer Einlaufseite weist die Mehrfachspinnpumpe 5 einen Schmelzezulauf 6 auf. Über den Schmelzezulauf 6 ist die Mehrfachspinnpumpe 5 mit einer hier nicht dargestellten Schmelzequelle beispielsweise einem Extruder verbunden. Auf der Auslassseite ist die Mehrfachspinnpumpe 5 über ein Verteilleitungssystem 7 mit den Spinndüsen 4.1 bis 4.6 verbunden.A
Zur Steuerung der Mehrfachspinnpumpe 5 ist das Pumpensteuergerät 5.2 mit einer Maschinensteuereinrichtung 12 verbunden.In order to control the
Unterhalb des Spinnbalkens 3 ist in der Spinnstelle 1.1 eine Abkühleinrichtung 8 vorgesehen, um eine durch die Spinndüsen 4.1 bis 4.6 extrudierte Filamentschar abzukühlen.A
Wie insbesondere aus der Darstellung in
Die dargestellte Abkühleinrichtung 8 ist jedoch beispielhaft. Grundsätzlich können auch andere Kühlsysteme genutzt werden, um beispielsweise eine Kühlluft radial von außen nach innen auf die Filamente einwirken zu lassen. In diesem Fall würde jedes Filamentbündel 10 einer der Spinndüsen 4.1 bis 4.6 durch einen gasdurchlässigen Kühlzylinder ummantelt. Die Kühlzylinder wären höhenverstellbar, so dass ein Zugang zu den Spinndüsen möglich ist.However, the
Wie aus den Darstellungen in
Wie aus der Darstellung in
Der Spinndüsenroboter 15 weist in diesem Ausführungsbeispiel einen Roboterarm 20 auf. Der Roboterarm 20 weist an seinem freien Ende einen Werkzeughalter 21 auf.The
In der Basisstation 24 ist dem Spinndüsenroboter 15 eine Werkzeugstation 23 zugeordnet, die mehrere Werkzeuge 22.1 und 22.2 vorhält. In diesem Ausführungsbeispiel sind nur zwei Werkzeuge vorgesehen, wobei das Werkzeug 22.1 eine Einrichtung zum Schaben der an den Unterseiten der Spinndüsen 4.1 bis 4.6 jeweils gehaltenen Düsenplatten und das Werkzeug 22.2 eine Einrichtung zum Lösen einer der Spinndüsen 4.1 bis 4.6 aus dem Spinnbalken 3 aufweisen. Hierzu sind die Spinndüsen 4.1 bis 4.6 beispielsweise über ein Bajonettverschluss an dem Spinnbalken 3 fixiert.In the
Die Werkzeuge 22.1 und 22.2 können wahlweise von dem Roboterarm 20 an dem Werkzeughalter 21 aufgenommen werden.The tools 22.1 and 22.2 can optionally be picked up by the
Zur Steuerung des Spinndüsenroboters 15 ist ein Robotersteuergerät 18 vorgesehen. Das Robotersteuergerät 18 ist über eine Steuerleitung vorzugsweise eine drahtlose Funkverbindung 19 mit der Maschinensteuereinrichtung 12 verbunden. Hierzu ist an dem Robotersteuergerät 18 ein Empfänger 19.1 und an der Maschinensteuereinrichtung 12 ein Sender 19.2 angedeutet.A
In der
Alternativ besteht auch die Möglichkeit, die durch die Spinndüsen extrudierte Durchflussmenge als Maßstab für die nächste Wartung zu nehmen. In diesem Fall könnte beispielsweise eine Anzahl von gewickelten Spulen erfasst und kontinuierlich durch eine Zähleinheit aufaddiert werden. Die Menge an Fadengewicht gibt direkt Auskunft über die Durchflussmenge beim Extrudieren der Polymerschmelze. So ist der Wartungszeitpunkt erreicht, wenn eine maximal vorgegebene Fadenmenge erzeugt wurde.Alternatively, it is also possible to use the flow rate extruded through the spinneret as a benchmark for the next maintenance. In this case, for example, a number of wound coils could be recorded and continuously added up by a counting unit. The amount of thread weight gives direct information about the flow rate when extruding the polymer melt. The maintenance time is reached when a maximum specified amount of thread has been produced.
Alternativ können auch Prozessstörungen genutzt werden, um Informationen über die Oberflächeneigenschaft der Spinndüsenplatten zu erhalten. So ist bekannt, dass eine Verengung der Düsenöffnungen an den Düsenplatten die Fadenbruchrate begünstigt. Insoweit besteht auch die Möglichkeit, dass die Zähleinheit eine Anzahl von Fadenbrüchen in der Spinnstelle 1.1 erfasst. In der
Hierbei können der Steuereinrichtung unterschiedliche Grenzwerte der Betriebsstunden, der gewickelten Spulen oder Fadenbrüche vorgegeben werden, so dass je nach Grenzwert ein Wartungszeitpunkt zum Schaben der Spinndüsen oder ein Wartungszeitpunkt zum Auswechseln der Spinndüsen erreicht ist.Here, the control device can be given different limit values for the operating hours, the wound bobbins or yarn breaks, so that depending on the limit value, a maintenance time for scraping the spinnerets or a maintenance time for replacing the spinnerets is reached.
Insbesondere eine Ermittlung des Wartungszeitpunktes zum Austausch der Spinndüse wird bevorzugt durch eine direkte Überwachung eines Betriebsparameters ausgeführt. So ist in
Für den Fall, dass innerhalb der Maschinensteuereinrichtung 12 ein Wartungszeitpunkt für zumindest eine der Spinndüsen 4.1 bis 4.6 an der Spinnstelle 1.1 ermittelt wurde, wird über die Steuerleitung 19 ein Steuerbefehl an das Robotersteuergerät 18 ermittelt. Der Steuerbefehl weist dabei vorzugsweise eine Signalfolge auf, aus denen die für den Einsatz des Spinndüsenroboters 15 notwendigen Informationen enthalten sind. So wird mit dem Steuerbefehl dem Robotersteuergerät 18 die exakte Spinnposition einer der Spinnpositionen 2.1 bis 2.6 übermittelt. Des Weiteren erhält das Robotersteuergerät 18 die Information über die anstehende Wartungsarbeit, ob ein Austausch der Spinndüse oder eine Düsenplattenreinigung an der Spinndüse ausgeführt werden muss. Dementsprechend wählt das Robotersteuergerät 18 das betreffende Werkzeug 22.1 oder 22.2 aus. Der Roboterarm 20 entnimmt das betreffende Werkzeug 22.1 oder 22.2 aus der Werkzeugstation 23. Anschließend verfährt der Spinndüsenroboter 15 aus der Basisstation 24 in die betreffende Wartungsposition, die einer der Spinnpositionen 2.1 bis 2.6 zugeordnet ist. Über hier nicht näher dargestellte Positioniermittel fixiert sich der Spinndüsenroboter 15 in der Wartungsposition und startet den Wartungsvorgang.In the event that a maintenance time for at least one of the spinnerets 4.1 to 4.6 at the spinning position 1.1 has been determined within the
Hierzu ist in
Nach erfolgter Reinigung der Spinndüse 4.1 werden nacheinander alle benachbarten Spinndüsen 4.2 bis 4.6 der Spinnstelle 1.1 gereinigt. Es besteht jedoch auch die Möglichkeit, dass nur einzelne Spinndüsen einer Spinnstelle 1.1 oder 1.2 gereinigt werden. Da die Spinndüsen 4.1 bis 4.6 einer der Spinnstellen 1.1 und 1.2 durch eine Spinnpumpe 5 versorgt werden, werden bei einer Wartung zwangsläufig alle Spinndüsen 4.1 bis 4.6 außer Betrieb genommen, so dass alle Spinndüsen für eine Wartung bereit wären.After the spinneret 4.1 has been cleaned, all adjacent spinnerets 4.2 to 4.6 of the spinning station 1.1 are cleaned one after the other. However, there is also the possibility that only individual spinnerets of a spinning position 1.1 or 1.2 are cleaned. Since the spinnerets 4.1 to 4.6 of one of the spinning positions 1.1 and 1.2 are supplied by a
Nach Abschluss der Wartungsarbeiten wird durch das Robotersteuergerät 18 ein Wartungsende signalisiert, so dass die Maschinensteuereinrichtung 12 den Prozess erneut starten kann. Der Spinndüsenroboter 15 wird in seine Basisstation 24 zurückgeführt.After completion of the maintenance work, the end of maintenance is signaled by the
Bei dem in
Bei dem in
Alternativ besteht jedoch auch die Möglichkeit, dass der Spinndüsenroboter 15 zwei separate Roboterarme 20.1 und 20.2 aufweist. Der zweite Roboterarm 20.2 ist hierzu in
Das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung zum Schmelzspinnen von synthetischen Fäden zeichnet sich dadurch aus, dass alle Wartungstätigkeiten an den Spinndüsen automatisiert ausgeführt werden können. Hierbei besteht auch die Möglichkeit, dass der Basisstation 24 unmittelbar eine Spinndüsenaufbereitungsstation zugeordnet ist. So kann der Spinndüsenroboter 15 nach Ausbau einer der Spinndüsen diese in der Basisstation 24 gegen eine neue Spinndüse eintauschen und erneut an der Unterseite des Spinnbalkens fixieren. Darüber hinaus besitzt die Verknüpfung zwischen der Maschinensteuereinrichtung der Spinneinrichtung mit dem Robotersteuergerät des Spinndüsenroboters den großen Vorteil, dass auch unerwünschte Prozessunterbrechungen durch Prozessstörungen zur Wartung der Spinndüsen genutzt werden können. Hier findet innerhalb der Maschinensteuereinrichtung jeweils ein Abgleich zwischen den Wartungszeitpunkten und der Prozessführung statt.The method according to the invention and the device according to the invention for melt-spinning synthetic threads are characterized in that all maintenance activities on the spinning nozzles can be carried out automatically. There is also the possibility that the
Das erfindungsgemäße Verfahren sowie die erfindungsgemäße Vorrichtung zum Schmelzspinnen von synthetischen Fäden gewährleisten eine gleichmäßige Herstellungsqualität der Fäden aufgrund strikter Einhaltung von Wartungsintervallen. Zudem lassen sich geringe Abfallmengen und Ausfallzeiten bei der Herstellung der Fäden generieren aufgrund einer automatisierten Ausführung der Wartungsarbeiten durch den Spinndüsenroboter.The method according to the invention and the device according to the invention for melt-spinning synthetic threads ensure a uniform production quality of the threads due to strict compliance with maintenance intervals. In addition, small amounts of waste and downtimes can be generated in the production of the threads due to the automated execution of the maintenance work by the spinneret robot.
Claims (14)
- Method for melt-spinning synthetic threads, in which a polymer melt is conveyed through a multiple spinning pump and fed to a plurality of spinning nozzles at an operating pressure, in which the spinning nozzles extrude the polymer melt respectively into a multiplicity of filaments and in which the spinning nozzles are regularly serviced, characterized in that at least one service due time for servicing at least one of the spinning nozzles is predetermined or determined by a machine control device, and in that, once the service due time is reached, a control command for activating a spinning nozzle robot is generated by the machine control device, which control command at least initiates the servicing of the spinning nozzles.
- Method according to Claim 1, characterized in that at least one operating parameter of the spinning nozzle for determining the service due time is continuously monitored.
- Method according to Claim 1 or 2, characterized in that the service due time is determined by a number of operating hours and/or a number of wound packages and/or a number of thread breakages.
- Method according to one of Claims 1 to 3, characterized in that the control command contains a plurality of signal sequences, which are readable by the spinning nozzle robot and by which a position indication of the spinning nozzle, an exchange of the spinning nozzles and/or a nozzle plate cleaning are transmitted to the spinning nozzle.
- Method according to one of Claims 1 to 4, characterized in that the spinning nozzle robot executes with different tools a release of the spinning nozzle from a spinning beam, and/or a scraping of the nozzle plate on the spinning nozzle.
- Method according to Claim 5, characterized in that the tools are guided by a plurality of robot arms, or alternatingly by one robot arm of the spinning nozzle robot.
- Method according to one of Claims 1 to 6, characterized in that the spinning nozzle robot moves recurringly out of a base station and stops and takes up position in one of a plurality of servicing positions.
- Method according to one of Claims 1 to 7, characterized in that the control signal triggers a thread cut of the thread after winding of a full package, and a pump stoppage of the multiple spinning pump.
- Apparatus for melt-spinning a plurality of threads with a spinning device (1), which has at least one multiple spinning pump (5) and a plurality of spinning nozzles (4.1 - 4.6), comprising a spinning beam (3) for receiving the detachably held spinning nozzles (4.1 - 4.6) and comprising a machine control device (12), which is connected at least to a control unit (5.2) of the multiple spinning pump (5), characterized in that a spinning nozzle robot (15) for the servicing of the spinning nozzles (4.1 - 4.6), having a robot control unit (18), is provided, and in that the robot control unit (18) is connected to the machine control device (12) of the spinning device (1).
- Apparatus according to Claim 9, characterized in that the machine control device (12) is connected to a sensor (13) for monitoring an operating parameter of one of the spinning nozzles (4.1 - 4.6).
- Apparatus according to Claim 9 or 10, characterized in that the machine control device (12) is coupled with at least one counting unit, by which a number of operating hours and/or a number of wound packages and/or a number of thread breakages can be registered.
- Apparatus according to one of Claims 9 to 11, characterized in that the spinning nozzle robot (15) has at least one tool (22.1, 22.2) for releasing one of the spinning nozzles (4.1 - 4.6) from the spinning beam (3) and/or a tool (22.1, 22.2) for scraping a nozzle plate of one of the spinning nozzles (4.1 - 4.6).
- Apparatus according to Claim 12, characterized in that the spinning nozzle robot (15) has, for the guidance of the tools (22.1, 22.2), a robot arm (20) having a tool holder (21) for the alternating reception of the tools (22.1, 22.2), or a plurality of robot arms (20.1, 20.2).
- Apparatus according to one of Claims 9 to 13, characterized in that the spinning nozzle robot (15) is configured in a self-propelled manner on an overhead track (16) which extends along a base station (24) and a plurality of servicing positions
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017005988 | 2017-06-23 | ||
| PCT/EP2018/064412 WO2018234009A1 (en) | 2017-06-23 | 2018-06-01 | METHOD AND DEVICE FOR FUSION WIRE THROUGH SYNTHETIC WIRES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3642401A1 EP3642401A1 (en) | 2020-04-29 |
| EP3642401B1 true EP3642401B1 (en) | 2023-08-02 |
Family
ID=62492654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18728629.9A Active EP3642401B1 (en) | 2017-06-23 | 2018-06-01 | Method and device for melt-spinning synthetic threads |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3642401B1 (en) |
| JP (1) | JP7374771B2 (en) |
| CN (1) | CN110914487B (en) |
| WO (1) | WO2018234009A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020000804A1 (en) | 2020-02-07 | 2021-08-12 | Oerlikon Textile Gmbh & Co. Kg | Process for replacing a spinneret pack and a spinneret pack |
| CN113737291B (en) * | 2020-05-29 | 2023-12-19 | 欧瑞康纺织有限及两合公司 | Melt spinning apparatus |
| DE102021005365A1 (en) | 2021-10-28 | 2023-05-04 | Oerlikon Textile Gmbh & Co. Kg | Cleaning device and method for cleaning a nozzle plate |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6039404A (en) * | 1983-08-12 | 1985-03-01 | Nippon Ester Co Ltd | Correction of face of spinneret in melt spinning |
| US6126102A (en) * | 1998-11-10 | 2000-10-03 | E. I. Du Pont De Nemours And Company | Apparatus for high speed beaming of elastomeric yarns |
| EP1193334A1 (en) | 2000-09-20 | 2002-04-03 | Murata Kikai Kabushiki Kaisha | Cleaning device for the metal frame surface of the spinning nozzle |
| JP4625682B2 (en) * | 2004-11-19 | 2011-02-02 | ダイセル化学工業株式会社 | Analysis program |
| DE102007003949A1 (en) * | 2006-02-10 | 2007-08-23 | Saurer Gmbh & Co. Kg | Producing melt-spun tow by gathering filament bundles together and depositing the resulting tow in the cans of a can creel comprises conveying the tow to a separate waste can during process startup or interruption |
| JP4966766B2 (en) * | 2007-07-05 | 2012-07-04 | 三菱レイヨン株式会社 | Optical fiber spinning apparatus and optical fiber manufacturing method |
| CN201390809Y (en) * | 2009-02-04 | 2010-01-27 | 江苏申久化纤有限公司 | Spinning equipment used for producing porous fine denier POY (polyester pre-oriented yarn) yarn |
| DE102009012550A1 (en) * | 2009-03-10 | 2010-09-16 | Oerlikon Textile Gmbh & Co. Kg | Open-end spinning device has spinning rotor, whose rotor cup is run with high driving speed in rotor housing, which is negatively pressurized during spinning process |
| CN104178824B (en) * | 2013-05-20 | 2016-05-11 | 中国石油天然气股份有限公司 | Cleaning system and method for dry-jet wet spinning spinneret for preparing polyacrylonitrile precursor |
| CN104032397A (en) * | 2014-06-30 | 2014-09-10 | 苏州大学 | Device for producing polyamide 6POY/FDY composite fiber according to high-speed spinning and confounding one-step method |
-
2018
- 2018-06-01 EP EP18728629.9A patent/EP3642401B1/en active Active
- 2018-06-01 WO PCT/EP2018/064412 patent/WO2018234009A1/en not_active Ceased
- 2018-06-01 CN CN201880041833.9A patent/CN110914487B/en active Active
- 2018-06-01 JP JP2019570908A patent/JP7374771B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110914487B (en) | 2022-04-29 |
| CN110914487A (en) | 2020-03-24 |
| JP7374771B2 (en) | 2023-11-07 |
| WO2018234009A1 (en) | 2018-12-27 |
| EP3642401A1 (en) | 2020-04-29 |
| JP2020524755A (en) | 2020-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3642401B1 (en) | Method and device for melt-spinning synthetic threads | |
| DE3446159A1 (en) | DEVICE FOR AUTOMATICALLY REMOVING THE YARN WRAP FROM SPINNING MACHINES | |
| DE102016014976A1 (en) | Method and apparatus for melt spinning a thread | |
| EP0090911A2 (en) | Method and apparatus to optimize a work occurrence at each working station of a textile machine | |
| WO2018197359A1 (en) | Method and device for spreading a plurality of spun yarns | |
| DE10137056B4 (en) | Method for the maintenance of a textile machine | |
| DE102004052669A1 (en) | Process and assembly to monitor the productivity and operating efficiency of a number of textile spinning stations | |
| DE102017110572A1 (en) | Method for monitoring and operating a plurality of melt spinning stations and a melt spinning plant with multiple melt spinning stations | |
| DE102015012214A1 (en) | A method of adjusting a factory design of an open end rotor spinning machine that concerns a yarn lot production | |
| WO2019001948A1 (en) | MELT SPINNING DEVICE | |
| WO2018146012A1 (en) | Method and apparatus for operating a plurality of spinning positions of a melt spinning plant | |
| DE102015118987A1 (en) | Method for operating a spinning machine with a fully automatic piecing device and spinning machine with a fully automatic piecing device | |
| EP0731195A1 (en) | Device and procedure for maintenance of spinning devices | |
| EP1247883A2 (en) | Apparatus and method for melt spinning and depositing several tows | |
| WO2018153739A1 (en) | Melt-spinning device | |
| EP3710619A1 (en) | Melt spinning device | |
| DE102018113087A1 (en) | Method for monitoring a spinneret pack in a spinning station and a device for melt-spinning filaments | |
| WO2007020022A1 (en) | Process and device for winding a plurality of synthetic threads | |
| DE2546436C3 (en) | Maintenance device movable along at least one spinning machine | |
| DE102017104337A1 (en) | Method for servicing workstations of a textile machine | |
| WO2019243125A1 (en) | Method for the production and further processing of synthetic threads | |
| WO2019228688A1 (en) | Method and device for melt spinning and winding a plurality of threads | |
| EP4215655A1 (en) | Method for operating a spinning station of a rotor spinning machine and rotor spinning machine | |
| WO2020074321A1 (en) | Method for operating a melt-spinning device and melt-spinning device | |
| DE102017000607A1 (en) | Apparatus for stripping, drawing and winding a synthetic yarn sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20200117 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20230405 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502018012864 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230831 |
|
| REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20230802 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231103 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231202 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231204 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231102 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231202 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231103 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502018012864 Country of ref document: DE |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20240503 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502018012864 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230802 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240601 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20240601 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20250101 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240601 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240630 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240630 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240601 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240601 |
|
| REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20240630 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1594840 Country of ref document: AT Kind code of ref document: T Effective date: 20240601 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20180601 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20240601 |