EP3642401B1 - Verfahren und vorrichtung zum schmelzspinnen von synthetischen fäden - Google Patents

Verfahren und vorrichtung zum schmelzspinnen von synthetischen fäden Download PDF

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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
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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
Application number
EP18728629.9A
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German (de)
English (en)
French (fr)
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EP3642401A1 (de
Inventor
Marc-André HERRNDORF
Martin Fischer
Jörg SCHIPPEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
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Oerlikon Textile GmbH and Co KG
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Publication of EP3642401A1 publication Critical patent/EP3642401A1/de
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Publication of EP3642401B1 publication Critical patent/EP3642401B1/de
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    • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP18728629.9A 2017-06-23 2018-06-01 Verfahren und vorrichtung zum schmelzspinnen von synthetischen fäden Active EP3642401B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017005988 2017-06-23
PCT/EP2018/064412 WO2018234009A1 (de) 2017-06-23 2018-06-01 Verfahren und vorrichtung zum schmelzspinnen von synthetischen fäden

Publications (2)

Publication Number Publication Date
EP3642401A1 EP3642401A1 (de) 2020-04-29
EP3642401B1 true EP3642401B1 (de) 2023-08-02

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EP18728629.9A Active EP3642401B1 (de) 2017-06-23 2018-06-01 Verfahren und vorrichtung zum schmelzspinnen von synthetischen fäden

Country Status (4)

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EP (1) EP3642401B1 (zh)
JP (1) JP7374771B2 (zh)
CN (1) CN110914487B (zh)
WO (1) WO2018234009A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020000804A1 (de) 2020-02-07 2021-08-12 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Auswechseln eines Spinndüsenpaketes sowie ein Spinndüsenpaket
CN113737291B (zh) * 2020-05-29 2023-12-19 欧瑞康纺织有限及两合公司 熔纺设备
DE102021005365A1 (de) 2021-10-28 2023-05-04 Oerlikon Textile Gmbh & Co. Kg Reinigungsvorrichtung und Verfahren zum Reinigen einer Düsenplatte

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039404A (ja) * 1983-08-12 1985-03-01 Nippon Ester Co Ltd 溶融紡糸における紡糸口金面清掃方法
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 (ja) * 2004-11-19 2011-02-02 ダイセル化学工業株式会社 解析プログラム
DE102007003949A1 (de) * 2006-02-10 2007-08-23 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung und Ablage eines Spinnkabels
JP4966766B2 (ja) * 2007-07-05 2012-07-04 三菱レイヨン株式会社 光ファイバの紡糸装置および光ファイバの製造方法
CN201390809Y (zh) * 2009-02-04 2010-01-27 江苏申久化纤有限公司 一种用于生产多孔细旦poy丝的纺丝设备
DE102009012550A1 (de) * 2009-03-10 2010-09-16 Oerlikon Textile Gmbh & Co. Kg Offenend-Spinnvorrichtung
CN104178824B (zh) * 2013-05-20 2016-05-11 中国石油天然气股份有限公司 制备聚丙烯腈原丝用干喷湿纺喷丝板的清洗系统及方法
CN104032397A (zh) * 2014-06-30 2014-09-10 苏州大学 高速纺丝交络一步法生产聚酰胺6poy/fdy复合纤维的设备

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Publication number Publication date
JP7374771B2 (ja) 2023-11-07
WO2018234009A1 (de) 2018-12-27
EP3642401A1 (de) 2020-04-29
JP2020524755A (ja) 2020-08-20
CN110914487A (zh) 2020-03-24
CN110914487B (zh) 2022-04-29

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