EP3642401A1 - Verfahren und vorrichtung zum schmelzspinnen von synthetischen fäden - Google Patents
Verfahren und vorrichtung zum schmelzspinnen von synthetischen fädenInfo
- Publication number
- EP3642401A1 EP3642401A1 EP18728629.9A EP18728629A EP3642401A1 EP 3642401 A1 EP3642401 A1 EP 3642401A1 EP 18728629 A EP18728629 A EP 18728629A EP 3642401 A1 EP3642401 A1 EP 3642401A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- robot
- spinneret
- spinnerets
- spinning
- maintenance
- 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.)
- Granted
Links
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 to a device for melt-spinning a plurality of threads according to the preamble of claim 9.
- auxiliary equipment some of which handles mechanical work such as scraping the nozzle plates.
- EP 1 193 334 A1 discloses such an 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 station.
- the tools for scraping the nozzle plates can be performed automatically.
- the solution for the device for melt-spinning synthetic threads is that a spinneret robot is provided with a robot control device for the maintenance of the spinnerets, and that the robot control device is connected to the machine control device.
- the invention has the particular advantage that the regularly incurred maintenance work on the spinnerets are integrated into the process control.
- favorable operating situations such as e.g. a thread break can be used to exploit the resulting process interruption for the maintenance of one of the spinnerets.
- pending maintenance can be carried out directly.
- 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 on the basis of process parameters.
- the maintenance times can be determined by continuously monitoring at least one operating parameter of the spinnerets.
- an operating pressure as operating parameters of the spinneret could be continuously monitored and controlled. As soon as an impermissible pressure is registered, replacement of the spinneret is required to replace or clean the filter element.
- the undersides of the spinnerets are more or less loaded by deposits.
- the method variant is preferably carried out to determine the maintenance time for scraping a spinneret.
- the duration of operation may be determined by a number of operating hours and / or a number of wound coils and / or a number of thread breaks, which can be used without cleaning the lower sides of a spinneret.
- the method variant is preferably carried out, in which the control command contains a plurality of signal sequences which can be read by the spinneret robot, by which a position indication of the spinneret, an exchange of the spinneret unit and / or a nozzle plate cleaning a spinneret unit to be transmitted.
- the control command contains a plurality of signal sequences which can be read by the spinneret robot, by which a position indication of the spinneret, an exchange of the spinneret unit and / or a nozzle plate cleaning a spinneret unit to be transmitted.
- Each of the maintenance work is performed by the spinneret robot with different tools.
- the tools can be guided by several robot arms or alternately by a robot arm of the spinneret robot.
- the method variant is particularly advantageous in which of the spinner jet robots periodically pulls out of a base station and stops in one of several maintenance positions and positions itself.
- the spinneret robot is led out of the base station only in case of 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 a winding of a full bobbin and a pump stop of the multiple spinning pump.
- the respective spinning position is ready to receive the spinner robot to perform the maintenance.
- the device according to the invention for melt-spinning synthetic threads has the great advantage that the maintenance work on the spinnerets can be carried out fully automatically without the use of an operator.
- the connection between the machine control device and the robot control unit ensures a constant exchange of data both about the upcoming maintenance work and about the procedure and the end of the maintenance work.
- a signal can be generated by the robot control device when the maintenance work in the spinneret is completed.
- the control device has at least one control algorithm by which a maintenance time for the maintenance of at least one of the spinnerets can be determined and monitored.
- a direct activation command to the robot control unit can be determined by the machine control device at the time of maintenance.
- a sequence of operations is preferably determined by the machine control device or by the robot control device as a function of the shortest possible downtime.
- 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 spinning pressure of the spinnerets.
- the development of the device according to the invention is preferably carried out, in which the control device is coupled to at least one counting device, through which a number of operating hours and / or a number of wound Coils and / or a number of thread breaks can be detected.
- a yarn breakage sensor for monitoring a yarn path is connected to the machine control device in order to be able to carry out corresponding process changes.
- the thread breaks occurring within a period of operation can be determined in a simple manner, in order to obtain conclusions about possible maintenance intervals.
- the spinneret robot at least one tool for releasing one of the spinnerets from the spinning beam and / or a tool for scraping a nozzle plate of the Having spinnerets.
- a corresponding signal can be triggered via the machine control device such that the spinneret robot approaches 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 or alternatively a plurality of robot arms for guiding the tools.
- the spinneret robot is preferably guided on a monorail, which extends along a base station and a plurality of maintenance positions.
- the spinneret robot can be held during the maintenance-free time in a base station, in which the tools are controllable.
- Particularly advantageous here is the connection to a Spinndüsenetzleungs founded to make the replacement of the spinnerets fully automatic.
- the spinneret robot could give the developed spinneret at the spinneret preparation device and take over a new already preheated spinneret and use it in the corresponding spinning position.
- Fig. 1 shows schematically a front view of an embodiment of the device according to the invention for melt spinning
- Fig. 2 shows schematically a side view of the embodiment of the device according to the invention for melt spinning
- Fig. 3 shows schematically a front view of another embodiment of the device according to the invention
- a first embodiment of the device according to the invention is shown schematically in several views and several operating situations, with only the relevant components for the explanation of the invention are shown.
- Fig. 1 the embodiment is shown in a front view in a normal operating condition.
- Fig. 2 the embodiment is shown in a side view, wherein the manufacturing process for performing a maintenance is interrupted.
- the embodiment of the device according to the invention is first explained with reference to both figures as follows.
- the embodiment of the device according to the invention consists of a spinning device 1, which has a plurality of spinning stations.
- a first spinning station 1.1 is complete and an adjacent spinning station 1.2 only partially shown.
- the spinning stations 1.1 and 1.2 have several spinning positions, wherein in each spinning position, a thread is generated. In this case, six spinning positions 2.1 to 2.6 are provided per spinning station 1.1 and 1.2.
- the spinning stations 1.1 and 1.2 of Spinning device 1 are usually made identical, so that the structure is explained at the spinning station 1.1.
- the spinning station 1.1 has a spinning bar 3, which extends over all spinning positions 2.1 to 2.6.
- the spinning beam is heated and carries on a bottom several spinnerets. In this embodiment, a total of six spinnerets 4.1 to 4.6 are shown.
- the spinnerets 4.1 to 4.6 are releasably held on the spinning beam 3.
- a multiple spinning pump 5 is arranged.
- 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 On an inlet side, the multiple spinning pump 5 has a melt inlet 6. About the melt inlet 6, the multiple spinning pump 5 is connected to a melt source, not shown here, for example, an extruder.
- the multiple spinning pump 5 is connected via a distribution line system 7 with the spinnerets 4.1 to 4.6.
- the pump control device 5.2 is connected to a machine control device 12.
- a cooling device 8 is provided in the spinning station 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 blow chamber 8.2, which are separated from one another by a blowing wall 8.3.
- a cooling air flow is generated transversely to the filament bundle.
- the illustrated cooling device 8 is exemplary.
- other cooling systems can be used, for example, to allow a cooling air to act radially from outside to inside the filaments.
- each filament bundle 10 of one of the spinnerets 4.1 to 4.6 would be encased by a gas-permeable cooling cylinder.
- the cooling cylinders would be height adjustable, so that access to the spinnerets is possible.
- each of the spinnerets 4.1 to 4.6 is assigned a collection thread guide 9 in order to form a thread 11 from the filament bundles 10.
- 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 monorail 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 units 1.1 and 1.2.
- the spinneret robot 15 is guided via a chassis 17 on the monorail 16, wherein a travel drive (not shown here) is integrated with 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 which holds a plurality of tools 22.1 and 22.2.
- the Tool 22.1 a device for scraping the nozzle plates held on the undersides of the spinnerets 4.1 to 4.6 respectively and the tool 22.2 have 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, by means of a bayonet closure.
- the tools 22. 1 and 22. 2 may optionally be received 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 unit 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 on each spinneret 4.1 to 4.6 of the spinning station 1.1.
- the polymer melt is fed under pressure to the spinnerets 4.1 to 4.6 by means of the multiple spinning pump 5.
- 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 spinnerets 4.1 to 4.6 is hereby preferably determined in the machine control device 12 using control algorithms. For example, the time between two maintenance cycles operating time to be predetermined. In this case, the control device has a simple counting unit which records the number of operating hours. When the maximum operating time is reached, the maintenance time is reached.
- the flow rate extruded through the spinnerets as the benchmark for the next service.
- a number of wound coils could be detected and continuously added 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 predetermined amount of thread was generated.
- process disturbances can be used to obtain information about the surface properties of spinneret plates.
- a narrowing of the nozzle openings on the nozzle plates favors the yarn breakage rate.
- the counting unit detects a number of thread breaks in the spinning station 1.1. In FIG. 1, this is indicated by a dashed representation that a yarn breakage sensor 14 is connected to the machine control device 12.
- the control device can set different limits for the operating hours, the wound coils or yarn breaks, so that, depending on the limit, a maintenance time for scraping the spinnerets or a maintenance time for replacing the spinnerets is achieved.
- a determination of the maintenance time for replacement of the spinneret is preferably carried out by a direct monitoring of an operating parameter.
- the distribution line system 7 is assigned a pressure sensor 13.
- the pressure sensor 13 is connected to the engine controller 12.
- an operating pressure for extruding the polymer melt can be continuously monitored. Since the spinnerets 4.1 to 4.6 have a filter element, not shown here, which becomes increasingly dirty as the operating time progresses, an increase in the operating pressure is to be expected.
- the spinnerets 4.1 to 4.6 can be assigned a maximum operating pressure, which determines an exchange of the respective spinneret.
- the maintenance time for servicing the spinneret can thus be determined reliably.
- a control command to the robot controller 18 is determined via the control line 19.
- the control command preferably has a signal sequence from which the information necessary 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 transmitted to the robot control unit 18 with the control command.
- the robot control unit 18 receives the information about the upcoming maintenance work, whether an exchange of the spinneret or a nozzle plate cleaning must be performed on the spinneret. Accordingly, the robot controller 18 selects the respective tool 22.1 or 22.2. The robot arm 20 removes the relevant tool 22.1 or 22.2 from the tool station 23. Subsequently, the spinneret robot 15 moves from the base station 24 in the relevant maintenance position, the one of the spinning positions 2.1 bis 2.6 is assigned. About not shown here positioning, the spinneret robot 15 is fixed in the maintenance position and starts the maintenance process. For this purpose, a situation is shown in Fig. 2, in which the spinneret robot 15 at the spinneret 4.1 must perform a Düsenplattenreimgung.
- the robot arm 20 carries on its tool holder 21, the tool 22.1, which is used for scraping the nozzle plates.
- the spinneret robot 15 is fixed in the illustrated maintenance position, so that the robot arm 20 is guided with the tool 22.1 to the underside of the spinneret 4.1.
- the spinnerette robot 15 is capable of selectively using various tools for performing maintenance. In principle, however, it is also possible to design the spinneret robot 15 only for a maintenance activity.
- the embodiment of FIG. 3 is substantially identical to the embodiment of FIG. 1, so that at this point only the differences will be explained and otherwise reference is made to the above description.
- the spinnerette robot 15 shown in Fig. 3 has a robot arm 20.1, which has a fixed tool 22.1 at its free end.
- the spinneret robot 15 can only be used to scrape the spinnerets.
- the spinneret robot 15 has two separate robot arms 20.1 and 20.2.
- the second robot arm 20.2 is shown in dashed lines in Fig. 3 for this purpose. At each of the robot arms 20.1 and 20.2, respectively, a different tool 22.1 and
- the spinnerette robot 15 either the
- both robot arms 20.1 and 20.2 can simultaneously be used to scrape a plurality of spinnerets or to replace the spinnerets.
- the spinneret robot could also have more than two robot arms, so that several spinnerets are scraped simultaneously. This considerably reduces the times of maintenance work.
- the inventive method and apparatus for melt-spinning synthetic threads is characterized by the fact that all maintenance activities on the spinnerets can be performed automatically.
- the base station 24 is assigned directly to a spinneret preparation station.
- the spinneret robot 15 can replace it in the base station 24 with a new spinneret and fix it again on the underside of the spinneret.
- the link between the machine control device of the spinning device with the robot controller of the spinneret robot has the great advantage that even unwanted process interruptions can be used by process disturbances for the maintenance of spinnerets.
- a balance 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 manufacturing quality of the threads due to strict maintenance of maintenance intervals.
- low waste quantities and downtimes in the production of the threads can be generated due to 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)
Abstract
Description
Claims
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 true EP3642401A1 (de) | 2020-04-29 |
| EP3642401B1 EP3642401B1 (de) | 2023-08-02 |
Family
ID=62492654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18728629.9A Active EP3642401B1 (de) | 2017-06-23 | 2018-06-01 | Verfahren und vorrichtung zum schmelzspinnen von synthetischen fäden |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3642401B1 (de) |
| JP (1) | JP7374771B2 (de) |
| CN (1) | CN110914487B (de) |
| WO (1) | WO2018234009A1 (de) |
Families Citing this family (3)
| 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)
| 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 (de) | 2000-09-20 | 2002-04-03 | Murata Kikai Kabushiki Kaisha | Reinigungsvorrichtung für Metalloberflächen von Spinndüsen |
| 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 |
-
2018
- 2018-06-01 JP JP2019570908A patent/JP7374771B2/ja active Active
- 2018-06-01 EP EP18728629.9A patent/EP3642401B1/de active Active
- 2018-06-01 WO PCT/EP2018/064412 patent/WO2018234009A1/de not_active Ceased
- 2018-06-01 CN CN201880041833.9A patent/CN110914487B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110914487B (zh) | 2022-04-29 |
| JP2020524755A (ja) | 2020-08-20 |
| JP7374771B2 (ja) | 2023-11-07 |
| EP3642401B1 (de) | 2023-08-02 |
| WO2018234009A1 (de) | 2018-12-27 |
| CN110914487A (zh) | 2020-03-24 |
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