EP3802390A1

EP3802390A1 - Method and device for melt spinning and winding a plurality of threads

Info

Publication number: EP3802390A1
Application number: EP19711581.9A
Authority: EP
Inventors: Jörg HUTHMACHER; Sylvain HUCK; Andile DLAMINI
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2018-05-28
Filing date: 2019-03-15
Publication date: 2021-04-14
Also published as: JP7305681B2; WO2019228688A1; CN112188987A; JP2021525836A

Abstract

The invention relates to a method and a device for melt spinning and winding a plurality of threads, wherein the spun threads are guided and handled as a thread group and wherein the threads are wound in parallel to form spools (13) on the circumference of winding cores (12) which are clamped on a winding spindle (7.1) driven in a protruding manner. The completely wound spools (13) are pushed off the winding spindle (7.1) and transported away. To establish a link between the production history of the thread that is wound to form the spool (13) and the spool (13), the invention proposes coding the spools (13), wherein an RFID label (11) is created and/or written and wherein an identification code is assigned to each spool directly after it is pushed off the winding spindle (7.1). For this, a coding device (14) is assigned to the winding device (7), said coding device (14) being connected to a spool tracking system for creating and/or writing RFID labels (11).

Description

Method and device for melt spinning and winding several threads

The invention relates to a method for melt spinning and winding a plurality of threads according to the preamble of claim 1 and a device for melt spinning and winding a plurality of threads according to the preamble of claim 7.

In the production of synthetic yarns in which a plurality of very fine filament strands are extruded from a polymer melt, combined into a yarn, treated and wound into a coil at the end, it is common to detect process or product parameters which are used as a measure a yarn quality are assigned to the threads. Such quality data are of great importance, in particular for the subsequent process, in which further processing of the thread takes place.

Thus, from WO 2016/120187 A1, a generic method and a generic apparatus for melt-spinning and winding a plurality of threads are known, to which a follow-on process is assigned directly. Here, the process and product data of the thread production are assigned directly to the wound coils. The data of the coils are digitally assigned to the follow-up process or by an identification of the coil directly. The coils are marked accordingly prior to packaging, so that identification and data assignment is ensured in the subsequent process.

The known method and the known apparatus for melt spinning and winding several threads requires a high logistic effort to the determined in online operation and offline operation data at the end assign the coils and make a corresponding identification of the coils. It is known, for example, that a multiplicity of spinning positions are used for the production of synthetic threads which, parallel to one another, each produce a group of threads and thus a large number of coils. It is thus usual for the coils produced in online operation to be temporarily stored, since the determination of the data in the offline method is more time-consuming. In this case, it also does not help if an encoding is generated on the coils directly in front of the packaging instead of the data identification. The risk that coils are linked to incorrect data in the subsequent process is very high.

In addition, it is also common practice that the clearing of the completed bobbins in the melt spinning process is performed manually by operator. Insofar, an automated sequence of the removal of the bobbins from the melt spinning process to packaging is not guaranteed.

The invention therefore has the object to provide a method for melt spinning and winding a plurality of threads and a device for melt spinning and winding a plurality of threads, in which an allocation of the data is guaranteed to a wound coil at any time.

A further object of the invention is to be able to allocate as much as possible to the coil in a large amount the process and product parameters relating to the wound thread.

This object is achieved according to the invention for a method in that an encoding of the coils is provided, wherein in each case an RFID label is generated and / or described and wherein each coil immediately after the removal from the winding spindle an identification code is assigned. For the device according to the invention, the solution results from the fact that the winding device is associated with a coding device which is connected to a coil tracking system for generating and / or writing RFID labels.

Advantageous developments of the invention are defined by the features and feature combinations of the respective subclaims.

The invention has the particular advantage that each coil produced in the melt-spinning process receives an identification code immediately after its completion by the take-up device. The identification code is implemented on an RFID tag and can be read at any time to identify the spool. This makes it possible to assign the production location and the spinning position as well as the thread to the spinning position of a spool. The identification code, which allows different identifications at the coils produced in the adjacent winding stations, adheres to the coil as a distinctive feature. In that regard, the product and process parameters measured on the wound thread during the melt spinning process can be clearly assigned via the identification code of the respective coil. For coding, in this case the respective RFID label can be generated directly or, alternatively, an already existing RFID label can be described. In addition, the RFID tag offers the advantage that in addition to the pure identification code, additional data could also be included in the RFID tag.

In an advantageous development of the method according to the invention, the RFID labels are pressed directly after the removal of the bobbins from the winding spindle with the respective identification code. wrote, with the RFID tags are held by the Spulhülsen. Thus, the winding tubes can be designed with passive RFID tags that are suitable for receiving data.

In the event that the RFID labels affixed to the winding tubes already have a sleeve code or data for sleeve inspection, the method variant in which the RFID labels of the winding tubes are read out by an RFID scanner when pushed onto the winding spindle is particularly advantageous , Thus, the sleeve code or the data of the winding tubes can be taken into account in the coding of the coils.

Alternatively, however, the method variant can be executed, in which prior to the removal of the coils, the RFID labels are printed with the respective identification code and in which the RFID label are supplied by an operator to the deported coils. This method variant is particularly advantageous for manual operation and manual clearing of the coils in the spinning positions.

With the help of the identification code, a large number of data can be linked directly to the coil. In that regard, the method variant is preferably carried out in which each identification code is assigned a data set of process, machine and product data and in which the data records are stored in a data memory. In this way, the data sets relating to the thread in the reel can be called up at any time using the identification code. Depending on the size of the data set, there is also the option of saving the data record directly on the RFID tag.

Regardless of the subsequent process, whether the thread receives a finish, for example, a texturing or whether the thread directly a weaving is fed, the identification codes of the coils are read in a follow-up process and assigned a further processing of the threads.

In that regard, all machine, process and product data are available to the subsequent process in order to take appropriate measures into account in the further processing of the thread. In this case, the data record of one of the identification codes can be assigned to the relevant identification code by further data, which are obtained, for example, in an off-line operation when checking the coils.

In order to be able to carry out the coding of the coils immediately after winding, the further development of the device according to the invention is particularly advantageous, in which the coding device has a label printer and / or an RFID scanner. This allows the RFID labels to be produced directly on the take-up device with the corresponding identification code. When using a label printer, it is possible for each take-up device to associate a separate label end marker or alternatively a group of take-up devices with one of several label printers.

For writing and reading RFID labels, the RFID scanner is designed as a read / write device, with each take-up device having a separate RFID scanner assigned to it. Thus, the spools can be coded automatically by a winding spindle each time they are pushed off.

So that a corresponding identification code is present in the winding device after every bobbin change, the development of the device according to the invention is preferably carried out, in which the bobbin tracking system is provided with a machine control for the transmission of data and Control signals is connected and wherein the coil tracking system comprises a coding module for generating identification codes. Thus, there is the possibility that the coil tracking system on the one hand receives the information of the upcoming bobbin change in time and, on the other hand, after the generation of the identification code, can perform a linkage with the respective data.

For receiving and storing the plurality of data and identification codes, the coil tracking system has a data memory. Due to the large amount of data, the data memory can advantageously be realized by means of a cloud memory which has further free interfaces for data exchange.

In order to implement the identification code immediately when the coils are pushed onto the RFID tag, the development of the invention is particularly advantageous, in which the reel sleeves held on the reel spindle each have a writable and readable RFID tag.

In this case, the coding can be automated in a simple manner in that the RFID scanner is assigned to a free end of the winding spindle, wherein each of the take-up devices carries a separate RFID scanner. In that regard, a complete follow-up of the coils is possible. Alternatively, the RFID tags produced by the label end muck can be assigned manually to the reels pushed out by the reel spindle, each with an identification code. So the RFID labels can be attached directly to the coil. In order to be able to use the data associated with the coils for subsequent processes, it is further provided that the coil tracking system and / or the data memory is connected to a process controller of a follow-up process. This means that all data relevant to the production of the thread can be assigned to the follow-up process via the respective identification code.

The invention is therefore particularly suitable for using all data recorded during melt spinning of the thread for further processing of the thread. In this case, all melt spinning processes are included in the invention, in which produced threads are wound into coils. Thus, for example, POY, FDY IDY, HOY or BCF coils could be coded in this way. The erfmdungsgemäße method for melt spinning and winding a plurality of threads is described below with reference to an embodiment of the inventive device with reference to the accompanying figures. They show:

1 schematically shows a front view of an exemplary embodiment of the device according to the invention with several spinning positions FIG. 2 shows a schematic side view of the embodiment from FIG. 1 FIG. 3 schematically shows a front view of one of the spinning positions of the embodiment from FIG. 1 shortly before a bobbin change

4 schematically shows a side view of a further embodiment of the device according to the invention for melt-spinning and winding threads 5 schematically shows a front view of a further exemplary embodiment of the device according to the invention with several spinning positions. In FIGS. 1 and 2 a first exemplary embodiment of the device according to the invention for melt-spinning and winding a plurality of threads is shown in a front view and in a side view. The following description applies to both figures, insofar as no explicit reference is made to one of the figures.

The embodiment of the device according to the invention has a plurality of spinning positions 1.1 to 1.7, which are placed side by side in a row-like arrangement and form a machine longitudinal side. The number of spinning positions shown in FIG. 1 is only an example. Basically, such devices include a plurality of similar spinning positions.

The spinning positions 1.1 to 1.7 shown in FIGS. 1 and 2 are identical in their construction. Using the example of the spinning position 1.1 shown in a side view in FIG. 2, the devices will be described in more detail below.

Each of the spinning positions 1.1 to 1.7 has a spinning device 2. The spinning device 2 comprises a spinning beam 2.2, which carries a plurality of spinnerets 2.1 on its underside. The spinnerets 2.1 are coupled to a spin pump 2.3, which is preferably designed as a multiple pump and generates a separate melt stream for each spinneret 2.1. The spinning pump 2.3 is connected via a melt feed 2.4 to a melt source (not shown here), for example an extruder. Below the spinning device 2, a cooling device 3 is arranged, which is formed in this embodiment by a cooling shaft 3.1 within a blast chamber 3.3. The cooling shaft 3.1 is followed by a chute 3.2 in the thread running direction.

Below the chute 3.2, a collecting device 4 is arranged, which has a plurality of yarn guides 4.1 in order to merge the filaments extruded per spinneret 2.1 into a yarn. In this exemplary embodiment, the spinning device 2 produces four threads, which are identified by the reference symbol 8. The number of threads is exemplary. Thus, such spinning devices 2 can produce up to 32 threads per spinning position simultaneously.

The collecting device 4 is assigned a preparation device 5 through which the threads 8 are wetted. The threads are drawn off as a thread set by a godet device 6 and fed to a winding device 7. In this embodiment, the godet device 6 is formed by two driven godets 6.1. Between the godets 6.1, a swirling device 6.2 is arranged in order to swirl the threads 8 separately.

The winding device 7 has per thread 8 each a winding point 7.5. The total of four winding stations 7.5 extend along a winding spindle 7.1, which is held projectingly on a winding turret 7.2. The winding turret 7.2 carries two winding spindles 7.1, which are guided alternately into a winding area and a changing area. At the circumference of the winding spindle 7.1, one winding tube 12 is tensioned per winding point 7.5 in order to wind the threads on the circumference of the winding tubes 12 to a respective coil 13. Each of the winding stations 7.5 is assigned to the division and separation of the threads 8 each one of several Umlenkröllchen 7.6, which are the godet device 6 immediately downstream. For winding and laying the threads 8 into coils 13, each winding point 7.5 has a traversing device 7.3. The traversing device 7.3 cooperate with a pressure roller 7.4, which is arranged parallel to the winding spindles 7.1 and rests against the surface of the spools 13 during winding of the threads.

On one of the winding spindles 7.1 side facing away from a machine frame 7.7 several drives 7.8 are arranged, which are assigned to the winding spindles 7.1, the winding turret 7.2 and the traversing device 7.3. The drives 7.8 are connected to a machine control device 9.

The machine control device 9 is likewise connected to the godets 6.1 of the godet device 6 and the spinning pump 2.3 of the spinning device 2.

In order to code the coils 13 produced by the winding device 7 immediately after completion, a coil tracking system 10 is provided. The coil tracking system 10 is connected to the machine control unit 9 for the transmission of data and control signals. The bobbin tracking system 10 has a coding module 10.1, by means of which an individual identification code is generated for each finished bobbin in the respective spinning position 1.1 to 1.7. To transmit the identification code, the coding module 10.1 is connected to a coding device 14 which is associated with the winding device 7. In this embodiment, the coding device 14 is formed by an RFID scanner 14.2. The RFID scanner is designed as a read / write device for reading data from an RFID tag or writing data on an RFID tag. The RFID scanner 14.2 is associated with a projecting end of the winding spindle 7.1 and held immediately above the winding spindle 7.1 on the machine frame 7.7.

2, each of the winding tubes 12 carries an RFID label 11. The RFID labels 11 on the winding tubes 12 are passive, writable and readable. The RFID labels 11 can be attached outside or inside of the sleeve surface of the winding tube 12. In principle, integration of the RFID tag as a microchip in the jacket of the winding tube 12 would also be possible.

The bobbin tracking system 10 has a data memory 10.2 which contains at least one further interface 15 for connecting a subsequent process.

For further explanation of the coil tracking system, reference will also be made to FIG. 3 below. In Fig. 3 the spinning position 1.1 of the embodiment of FIG. 1 is shown in a front view, where is activated at the winding turret 7.2 to initiate a bobbin change.

A bobbin change is initiated in the take-up device 7 when the wound bobbins 13 have a predetermined maximum bobbin diameter or a predetermined bobbin weight. In this case, the machine tracking device 9 signals to the package tracking system 10 that a bobbin change is imminent at the takeup device 7 of the spinning position 1.1. Now, the package tracking system 10 becomes active and generates for the take-up device 7 of the spinning position 1.1 a total of four identification codes via the coding module 10.1 and transmits them to the RFID scanner 14.2 on the take-up device 7 of the spinning position 1.1. After the winding spindle 7.1 has reached its change position with the finished wound coils, the coils 13 sequentially deported from the winding spindle 7.1. In this case, the RFID scanner 14.2 of each of the RFID tags 11 on the winding tubes 12 of the wound coils 13 implements the respective transmitted identification code. Each of the RFID tags 11 on the winding tubes 12 of the threaded coils 13 is now marked with an individual identification code. This identification code is linked within the coil tracking system 10 with the product, machine and process data acquired during the winding time for the thread in question. The resulting data record is addressed via the identification code and is stored in the data memory 10.2. In that regard, a data record containing the production history of the thread is stored in the data memory 10.2 for each identification code. The data records can be retrieved from the data memory 10.2 via the identification code, so that a process control of a subsequent process can access information in accordance with it. In that regard, the data memory 10.2 is preferably designed as a virtual memory and connected via wireless connections to the subsequent processes.

Moreover, however, it is also possible to add the data in the data memory 10.2 via the identification code to the data additionally determined in the melt spinning process which were determined during a laboratory test. In that regard, the data set within the data memory 10.2 can be added to each of the coils 13. Basically, however, there is also the possibility that at least some data of the coil are assigned directly in such a way that the RFID scanner 14.2 describes the RFID tag 11 with the data. In that regard, each RFID tag could contain additional product information, eg for sorting, in addition to the identification code. As can be seen from the illustration in FIG. 1, each of the winding devices 7 of the spinning positions 1.1 to 1.7 each has a separate RFID scanner 14.2. Thus, each of the coils produced in the melt spinning process can be coded with a unique identification code.

The embodiment shown in FIGS. 1 and 2 of the device according to the invention for melt-spinning and winding threads is particularly suitable for automation. All operations can be carried out without the involvement of an operator.

In the event that the wound coils 13 have to be manually picked up by the winding spindle 7.1, an alternative embodiment of the device according to the invention is shown in FIG. FIG. 4 shows schematically the spinning position 1.1 in a side view. The embodiment of FIG. 4 here is essentially identical to the exemplary embodiment according to FIG. 2, so that only the differences are explained below and otherwise reference is made to the above-mentioned description.

In the exemplary embodiment of the device according to the invention for melt-spinning and winding threads shown, the coding device 14 is formed by a label printer 14.1, which can be controlled by the coding module 10.1 as a coil tracking system 10, to an RFID tag 11 with an identification code produce. The RFID label 11 can be removed by an operator from the label printer 14.1 and fed directly to one of the bobbins 13. Thus, the RFID tag 11 is preferably attached to the circumference of the spool 13. In this case, each of the coil 13 withdrawn from the winding spindle 7.1 is equipped with an RFID label 11 one after the other. Each of the RFID tags 11 contains an individual identification code. The linking of the identification code with the data record on the production history of the thread is identical to the aforementioned embodiment. The data record and the identification code are both stored in the data memory 10.2.

In the exemplary embodiment according to FIG. 4, each winding device 7 of the spinning positions 1.1 to 1.7 could each have a separate label printer 14.1. Preferably, however, one of a plurality of label printers 14.1 is assigned to a group of take-up devices 7. For example, the spinning positions 1.1 and 1.2 can be assigned a common label printer 14.1. Due to the manual activities, this embodiment of the invention is particularly suitable for semi-automatic systems. In this case, with the aid of the label printer 14.1, additional data or quality features on the RFID label

11 are printed. For example, quality levels of the coils can be specified directly.

The adhering to the winding tubes 12 of the coils 13 or directly to the coils 13 RFID labels 11 remain until further processing of

Filaments obtained and are used in the respective subsequent process for reading the identification code. With the aid of the read-in identification code, all production-relevant data of the thread of the coil can be retrieved and fed to the subsequent process.

FIG. 5 shows a further exemplary embodiment of the device according to the invention for melt-spinning and winding a plurality of threads in a front view. The exemplary embodiment according to FIG. 5 is essentially identical to the exemplary embodiment according to FIG. 1, so that only the differences will be explained below and otherwise reference is made to the above description.

In the illustrated embodiments according to FIG. 5, the coding devices 14 assigned to the winding devices 7 are formed by RFID antennas 14.3. Each of the spin positions 1.1 to 1.7 the take-up devices 7 associated RFID antennas 14.3 are identically designed and designed as a read / write device to read an RFID label or to describe. The RFID antennas 14.3 are wirelessly connected, for example via a radio link, to the coil tracking system 10 and to the coding module 10.1.

The functions within the spinning stations 1.1 to 1.7 for coding the coils produced in the winding device 7 are identical to the aforementioned embodiment according to FIGS. 1 and 2. Thus, for example, RFID labels already present in the winding tubes can be pushed open read out on one of the winding spindles in order to transmit any existing sleeve data and sleeve codes to the spool tracking system 10. As a result of the linkage between the machine controller 9 and the bobbin tracking system 10, each sleeve is assigned to a thread and thus to a spinneret within the respective spinning position. The process and product data ascertained per thread during the winding of the bobbins can thus be fed to the bobbin tracking system 10 via the machine control 9. In the coding module 10.1, an individual identification code is generated for each coil produced and transmitted to the RFID antennas 14.3. These can then describe the corresponding RFID labels with the identification code when the coils are pushed off. Alternatively, however, it is also possible to continue to use the previously read in sleeve code as the identification code, so in addition to the tube data, the coil data are also known in the further processing process.

The method according to the invention and the device according to the invention for melt-spinning and winding a plurality of threads is therefore particularly suitable for providing a production history of a synthetic thread in the form of a data collection. This digital information of the thread wound within the coil is therefore particularly suitable for controlling subsequent processes accordingly. In addition, this data can be supplemented with other product and process data generated during further processing. Thus, it is possible to assign the history of the thread at the end to a final product.

Claims

claims

1 . A method of melt spinning and winding a plurality of yarns, wherein the spun yarns are fed and treated as a yarn sheet in which the yarns are wound parallel to bobbins on the circumference of bobbins stretched on a coiling driven winding spindle and at which the finished wound coils are deported from the winding spindle and transported away, characterized in that an encoding of the coils is provided, wherein in each case an RFID label is generated and / or described and wherein each coil immediately after the removal from the winding spindle a Identification code is assigned.

2. Method according to claim 1, characterized in that the RFID

Labels are described in succession as the bobbins are being pushed away, with the RFID labels being held by the bobbins.

3. The method according to claim 2, characterized in that the RFID labels are successively read when pushing the bobbins.

4. The method according to claim 1, characterized in that prior to the removal of the coils, the RFID labels are printed with the respective identification code and that the RFID labels are added by an operator to the deported coils.

5. The method according to any one of claims 1 to 4, characterized in that each identification code is a record of process, ma machine and product data is assigned and that the data records are stored in a data memory.

6. The method according to any one of claims 1 to 5, characterized in that read in a follow-up process, the identification codes of the coils and assigned to a further processing of the threads.

7. Method according to claim 6, characterized in that the machine, process and product data of the follow-up process are linked to the stored data record which is associated with the identification code.

8. An apparatus for melt-spinning and winding a plurality of yarns with a spinning device (2) and with a winding device (7) having a plurality of winding points (7.5) and at least one driven Spulspin- del (7.1) for clamping a plurality of winding tubes (12), characterized GE - indicates that the winding device (7) is associated with a coding device (14) which is connected to a package tracking system (10) for generating and / or writing RFID labels (11).

9. Device according to claim 8, characterized in that the coding device (14) has a label printer (14.1) and / or an RFID scanner (14.2).

10. Device according to claim 8, characterized in that the circuiting device (14) has an RFID antenna (14.3), wherein the RFID antenna (14.3) is wirelessly connected to the coil tracking system (10).

1 1. Device according to one of claims 8 to 10, characterized in that the coil tracking system (10) with a machine control (9) for transmitting data and control signals is connected and that the coil tracking system (10) is a coding module (10.1) for generating of identification codes.

12. Device according to claim 11, characterized in that the coil tracking system (10) has a data memory (10.2) for storing data and identification codes.

13. Device according to one of claims 7 to 12, characterized in that the winding tubes (12) held on the winding spindle (7.1) each have a writable and readable RFID label (11).

14. Device according Anspmch 13, characterized in that the

RFID scanner (14.2) or the RFID antenna (14.3) is associated with a free end of the winding spindle (7.1).

15. Device according to one of claims 8 to 12, characterized in that the RFID generated by the Etikettendmcker (14.2)

Labels (11) manually from the winding spindle (7.1) deported coils (13) are assignable.

16. Device according to one of claims 7 to 15, marked thereby, that the coil tracking system (10) and / or the data memory

(10.2) is connected to a process control of a follow-up process.