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WO2007059914A1 - Procede et dispositif pour filer a chaud et refroidir un brin multifilaire avec mesure de la temperature de l'air de refroidissement a l'interieur du faisceau de filaments - Google Patents

Procede et dispositif pour filer a chaud et refroidir un brin multifilaire avec mesure de la temperature de l'air de refroidissement a l'interieur du faisceau de filaments Download PDF

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Publication number
WO2007059914A1
WO2007059914A1 PCT/EP2006/011130 EP2006011130W WO2007059914A1 WO 2007059914 A1 WO2007059914 A1 WO 2007059914A1 EP 2006011130 W EP2006011130 W EP 2006011130W WO 2007059914 A1 WO2007059914 A1 WO 2007059914A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling air
temperature
cooling
filaments
filament bundle
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.)
Ceased
Application number
PCT/EP2006/011130
Other languages
German (de)
English (en)
Inventor
Detlev Schulz
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
Original Assignee
Oerlikon Textile GmbH and Co KG
Saurer GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oerlikon Textile GmbH and Co KG, Saurer GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Priority to DE502006003037T priority Critical patent/DE502006003037D1/de
Priority to EP06829081A priority patent/EP1951936B1/fr
Priority to CN2006800437426A priority patent/CN101313090B/zh
Publication of WO2007059914A1 publication Critical patent/WO2007059914A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • 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
    • D01D13/00—Complete machines for producing artificial threads
    • D01D13/02—Elements of machines in combination

Definitions

  • the invention relates to a method for melt spinning and cooling of a multifilen yarn according to the preamble of claim 1 and an apparatus for performing the method according to claim 11.
  • the filament is formed from a multiplicity of fine filamentary filaments.
  • each of the filaments is extruded from the polymer melt through a nozzle bore of a spinneret. After extrusion, the filaments guided at a distance from one another within a bundle are cooled and then brought together after solidification to the thread. During the transition of the filament
  • certain physical properties of the subsequent filament can be determined by certain cooling conditions.
  • compliance with the uniformity of the cooling conditions for the production of high-quality threads is of particular importance.
  • DE 100 31 106 A1 discloses a method and a device in which the temperature of a cooling air occurring during the cooling of the filaments is measured and monitored.
  • the cooling air is measured when entering a cooling shaft and exiting a cooling shaft.
  • Another object of the invention is to provide a method and an apparatus for melt-spinning and cooling a thread with which threads with predetermined and uniform cooling history can be wound into coils.
  • the invention is based on the finding that, depending on the number of filaments and the leadership of the filaments, in particular the distances the filaments to each other during cooling, the cooling results are significantly influenced by the thread.
  • the problem arises of uniformly guiding the cooling air through the filter bundle.
  • temperature measurements of the cooling air at various measuring points within the cooling zone revealed large differences.
  • the cooling history assigned to the individual filaments must be evaluated differently.
  • the invention now represents a solution in which approximately the effective cooling effect on the thread can be detected by simple temperature measurements of the cooling air. For this purpose, the temperature of the cooling air is measured in at least one measuring point within the filament bundle.
  • the temperatures of the cooling air within the filament bundle are well above the temperatures measured outside the filament bundle.
  • the measurement of the temperature of the cooling air within the filament bundle gives a good measure to determine the instantaneous solidification state in the filaments.
  • the uniformity of the cooling of the individual filaments within the filament bundle can be predetermined and specifically altered by intervention in the cooling process.
  • the external influences of the cooling such as soiling on the blowing wall, spinneret errors, etc., can be detected and stopped at an early stage.
  • the method variant is particularly advantageous in which the filaments spread during cooling by an outer leading edge of a shaped body and out become. This makes it possible to produce larger filament spacings, in which a temperature measurement of the cooling air emerging in the back of the filament bundle is advantageously possible.
  • the shaped body is preferably used for preparing the filaments. In this case, the leading edge is wetted with a spin finish.
  • a high uniformity of the cooling is achieved by an annular or disc-shaped molded body, on which the filaments of the filament bundle are guided.
  • the method variant is preferably used in which the temperature of the cooling air are measured simultaneously at several measuring points within the filament bundle or outside the filament bundle or preferably within and simultaneously outside the filament bundle.
  • temperature gradients can be detected over the cross-sections of a filament bundle, so that an even greater uniformity to the solidification of the single filament can be adjusted and so that the Abkühlhistorie the FIIa • elements with even greater accuracy detected and monitored is.
  • the measurements of the temperatures of the cooling air can be carried out both at vertical or horizontal side by side aligned measuring points.
  • the vertical orientation of the measurement points allows the transition from the molten state of the filament material to the solidified material within the cooling zone z ⁇ detect.
  • the measured temperature of the cooling air is particularly suitable for performing quality monitoring on the thread. Maintaining the most uniform possible cooling conditions on the thread essentially requires predetermined physical properties of the thread.
  • the method variant is particularly advantageous, in which at least one temperature measurement or a plurality of time-sequential temperature measured values of the cooling air are stored and compared with a desired value or a limit value range. From this it is possible to conclude directly on the constancy of the yarn quality produced.
  • the production process can be monitored particularly advantageously by the variant of the method in which the chronologically successive temperature measured values of the cooling air are converted to a statistical average or a plurality of statistical mean values and the mean value or mean values of the temperature measured values are compared with a desired value or a limit value range.
  • the setpoint values and also the limit value ranges for the mean value of the cooling air temperature can be determined, for example, by empirical tests in which the physical properties ascertained on the thread were related to the cooling of the filaments. Thus, for example, by monitoring the mean temperature measured value of the cooling air temperature within a tolerance band with an upper limit value and a lower limit value, the course of the process for producing the thread can be monitored.
  • the limit value overshoots that occur can represent additional monitoring and evaluation parameters that are important for documentation of • thread quality or for intervention in the process.
  • a quality value of the thread from the deviations of the measured temperature measured values or the average temperature measured values from the setpoint value or the limit value range of the cooling air temperature.
  • the quality value can be directly related to a predetermined product parameter, so that, for example, the thread can receive a quality mark after production.
  • the method variant in which the quality value is used to determine a product parameter, has the particular advantage that a product parameter determined by the cooling can be directly assigned to the yarn produced. This allows defining a product parameter that represents a measure of the internal uniformity of the thread. In particular, with a high uniform crystallinity of the yarn, a uniform ink absorption is made possible, so that an assessment, for example of the dyeing ability, is already given immediately upon production of the yarn. The case by the Quality value derived product parameters could thus be characterized in terms of their probable dyeability.
  • Cooling air streams are cooled and that for each thread a temperature reading of the cooling air is detected and used to monitor the quality of the respective thread. This makes it possible to compare the qualities of the threads already during production with each other in order to then make the following quality classifications.
  • the coils produced on a winding spindle could already have threads of different quality levels, so that sorting based on the quality values would be possible in good time.
  • the method variant is particularly advantageous, in which at least one momentary measured value of the temperature of the cooling air is adjusted to a desired value of the temperature and a difference signal is generated and converted to a control signal for intervention in the manufacturing process.
  • the control signal can be used to change a process parameter or a process sequence that determines the production of the thread.
  • the process parameters for changing the cooling of the filaments can be influenced such that a previously determined difference between the measured cooling air temperature and the predetermined setpoint temperature is as small as possible and compensated.
  • the process sequence for producing the thread could be influenced so that, for example, a premature bobbin change during winding of the thread is performed.
  • the inventive method thus allows early intervention in the manufacturing process of a synthetic thread, in particular to analyze the orientation and crystallinity of the filament material by cooling targeted and influence or to eliminate quickly eliminate external influences on the cooling disturbances, so that the setting of predetermined tex- tylphysikalischen properties or certain staining behavior or behavior are possible.
  • the process according to the invention can be carried out independently of the further treatment of the melt-spun yarn.
  • textile threads can be partially stretched or fully stretched and technical yarns, carpet yarns or staple fibers produced.
  • the device according to the invention has at least one temperature sensor within the filament bundle arranged between a spinneret and one of the spinning nozzles.
  • a measuring point within the filament bundle can be realized in the area of cooling.
  • the temperature sensor is associated with a guide means by which the filament strands are spread in the yarn path between the spinneret and the yarn guide, is a preferred embodiment to place the temperature sensor within the filament bundle. The danger of unwanted contacts between the temperature sensors and the filaments can thus be avoided.
  • the spreading of the filaments can be preferably carried out by a shaped body with an outer leading edge, which is held substantially concentric to the spinneret and the filaments leads to the leading edge.
  • the temperature sensor is preferably held centric to the shaped body within the filament bundle.
  • the development of the device according to the invention is preferably used, in which the shaped body is formed by a preparation device, in which the peripheral leading edge carries a wetting agent.
  • the formation of the shaped body by a circular disk or a circular ring allows guidance of the filament bundle, in which a cooling air directed from the outside onto the filament bundle can penetrate the filament bundle as uniformly as possible.
  • the device according to the invention can also be developed in such a way that the sensor means is formed by a plurality of temperature sensors which are arranged horizontally or vertically next to one another inside or outside or inside and outside the filament bundle.
  • the sensor means is formed by a plurality of temperature sensors which are arranged horizontally or vertically next to one another inside or outside or inside and outside the filament bundle.
  • a device variant is provided in which temperature profiles in relation to the cross section of the filament bundle or at which temperature profiles along the thread run could be detected.
  • Each temperature sensor represents a measuring point in which the temperature of the cooling air is detected.
  • the sensor means is advantageously coupled to a control device which has electronic means for measuring value evaluation, means for data storage and means for signal generation. With the aid of the control device, a measured value evaluation in the sense of the method according to the invention and a targeted control intervention in the production process can be made possible.
  • control device is coupled to at least one or more control devices that influence individual process units or process sequences.
  • At least one of the control units is connected to a cooling air source of the cooling device, then in that a blowing wall connected to the cooling air source can generate a predetermined cooling air flow for cooling the filament bundle.
  • control device it is also possible to couple the control device to an output device, so that the measured value analysis or the quality values of the thread resulting from the measured value analysis can be directly observed and documented.
  • the arithmetic operations known for the statistical evaluation can be carried out.
  • microprocessors with appropriate software equipment.
  • the design of the device is preferably used, in which at least one of the temperature sensors is arranged in an upper third of the cooling section extending between the spinneret and the yarn guide.
  • the device variant provides a particular advantage, in which at least one of the temperature sensors is held by a height-adjustable holding carrier.
  • the measuring point within the filament bundle can be realized at different heights and thus different temperature levels.
  • the device according to the invention extends essentially to all known cooling devices which generate a cooling air flow for cooling the filaments.
  • the cooling device can preferably be formed by a side blowing wall, which is connected via the blow chamber with the cooling air source. This produces a one-sided directed to the filament bundle cooling air.
  • Fig. 2 shows schematically different views of a first embodiment of the device according to the invention for carrying out the method according to the invention
  • Fig. 3 shows schematically a cross-sectional view of another embodiment of the device according to the invention
  • Fig. 4 shows schematically a further embodiment of the device according to the invention
  • Fig. 5 shows schematically a further embodiment of the device according to the invention
  • FIGS. 1 and 2 show a first embodiment of the device according to the invention for carrying out the method according to the invention for melt-spinning and cooling a multifilament yarn.
  • 1 shows the device schematically in a cross-sectional view and FIG. 2 in a side view. Unless an explicit reference is made to one of the figures, the following description applies to both figures.
  • the spinneret 2 has on the underside of the spinner 1 a plurality of nozzle bores (not shown here) which are connected to a melt feed 4. Via the melt feed 4, the spinning head 1 is connected to a melt source, for example to an extruder. Within the spinning head 1 2 further facilities for distribution and management of the given over the melt supply 4 polymer melt to the spinneret 2 such as spinning pumps and distribution lines may be arranged. The spinning head 1 is formed heated.
  • the cooling device 6 is designed as a cross-flow blowing for generating a cooling air flow.
  • the cooling device 6 has a blowing wall 7, which extends below the spinning head 1 via a cooling path laterally adjacent to the spinneret 2, so that the extruded through the spinneret 2 filaments 3 are guided directly adjacent to the blowing wall 7.
  • the blowing wall 7 is coupled via a blow chamber 8 with a blower 9.
  • the blowing wall 7 is gas-permeable, so that a cooling air generated by the blower 9 exits the blow chamber 8 through the blowing wall 7 as a cooling air flow and acts substantially transversely from the outside on the extruded through the spinneret 2 filaments 3.
  • the plurality of filaments extruded through the spinneret 2 are guided as a filament bundle 5 through the cooling path extending parallel to the blast wall 7.
  • a yarn guide 11 is provided below the blowing wall 7, to bring together the filaments 3 of the filament bundle 5, so that a multifilament yarn 16 is formed.
  • the yarn guide 11 thus represents the convergence point associated with the spinneret 2, in which all the filaments 3 are bundled together to form the yarn 16.
  • the yarn guide 16 is coupled to a preparation device (not shown here) in order to improve the cohesion of the filament strands 3 by a spin finish.
  • the sensor means 10 has a temperature sensor 12, which is arranged within the filament bundle 5.
  • the temperature sensor 12 is coupled via a signal line with a control device 17 arranged outside.
  • the sensor means 10 is associated with a guide means 13, which is characterized by a concentra- is formed trically to the spinneret 2 held molding 14.
  • the molded body 14 is upstream of the yarn guide 11 in the yarn path, wherein the shaped body 14 has a circumferential leading edge 15 which causes a deflection to the natural convergence of the filaments, so that the filament bundle 5 is spread by the molding 14 after deduction of the spinneret 2.
  • the leading edge 15 of the molded body 14 preferably has an envelope diameter which is equal to or greater than the enveloping contour formed by the nozzle bores of the spinneret 2.
  • a free space formed essentially centrally with respect to the filament bundle is formed, in which the temperature sensor 12 is held.
  • the temperature sensor 12 is held at the free end of a rod-shaped sensor carrier 26, which is connected to its opposite end with the shaped body 14.
  • the spreading of the filament bundle 5 through the shaped body 14 has the particular advantage that the distances between the filaments 3 change as the movement of the filaments progresses depending on the size of the shaped body 14.
  • the outer filaments 3 can be largely parallel to each other with substantially the same size between the shaped body 14 and the spinneret 2.
  • the shaped body 14 for spreading the filament bundle 5 is larger than the arrangement of the nozzle bores in the spinneret 2, can be in the outer filaments with continuous guidance, the distances between the filaments even increase.
  • the device according to the invention has a control device 17 coupled to the sensor means.
  • the control device 17 has electrical and electronic means which carry out signal evaluation, signal and data storage and signal generation allow for control.
  • the control device 17 is coupled to a control unit 18.1, which is assigned directly to the blower 9 acting as a cooling air source.
  • a plurality of filaments 3 are continuously extruded from a pressurized polymer melt via the spinneret 2.
  • the filaments 3 are guided together as a filament bundle 5 along the cooling path laterally to the blast wall 7 and deflected at the leading edge 15 of the shaped body 14 to be merged by den- yarn guide 11 to a thread 16.
  • the cooling device 6 In order for the filament material in the filaments 3 to solidify in a predetermined manner, the cooling device 6 generates a cooling air flow oriented essentially transversely to the direction of yarn travel from the outside and blows it through the blowing wall 7 against the filament bundle 5.
  • the cooling air of the cooling air flow penetrates the filament bundle 5 and causes the molten filament material after extrusion to solidify as the agitation progresses to obtain a crystalline structure of the filamentary material as defined by the deduction of the filaments 3 and cooling air condition.
  • the method according to the invention starts by measuring the cooling air occurring inside the filament bundle 5 with respect to its temperature.
  • the temperature value of the cooling air detected by the temperature sensor 12 in the measuring point within the filament bundle 5 is supplied to the control device 17 via a signal line.
  • the current temperature reading of the cooling air could for example be st Ti.
  • control device 17 can advantageously be specified for compliance predetermined target temperature of the cooling air as Ts o ii deposit so in that a nominal / actual comparison of the cooling air temperatures indicates compliance or deviation of the predetermined cooling by the means contained in the control device 17.
  • a control signal S is generated in the control device 17 from the difference signal, which is used directly to the control unit 18.1 for controlling the cooling air source in this case of the blower 9.
  • a higher cooling air flow rate can be generated so that, for example, an internal air temperature that is too high Ti st is lowered and thus improved cooling is achieved.
  • the difference signal is additionally or alternatively converted into an alarm signal that leads to a visual or acoustic display or is directed to a higher-order control unit.
  • Li Fig. 3 is a further embodiment of the device according to the invention is shown schematically in a cross-sectional view.
  • the sensor means 10 is formed by a plurality of temperature sensors 12.1 and 12.4 for realizing a plurality of measuring points within the filament bundle and outside the filament bundle.
  • the temperature sensors 12.1 and 12.2 are held at a distance from each other on a rod-shaped sensor carrier 26.1, which is coupled to a conical shaped body 14.
  • a first measuring point within the filament bundle 5 is defined by the temperature sensor 12.
  • the temperature sensors 12.3 and 12.4 represent two further measuring points outside the filament bundle, which are formed in particular on the side of the filament bundle 5 facing away from the blowing wall 7. In this case, the inner and outer measuring points for detecting the cooling air temperature are each at the same height of the cooling section.
  • the temperature sensors 12.3 and 12.4 are held on a second sensor carrier 26.2, which is fixed directly to a support rod 23.
  • the support rod 23 protrudes with a free end into the filament bundle 5 and carries the molded body 14.
  • the molded body 14 is formed conically, wherein the pointed cone end of the spinneret 12 faces and the sensor carrier 26.1 holds. At the blunt cone end, a leading edge 15 is formed, on which the extruded from the nozzle bores of the spinneret 2 filament 3 are guided.
  • the free end of the support rod 23 is externally coupled to a cross member 24, which is guided in a vertical guide 25.
  • the cross member 24 is adjustable in the guide 25, so that the position of the molded body 14 and thus the degree of spreading within the cooling section and the measurement points formed by the temperature sensors 12.1 to 12.4 are selectable and changeable.
  • the temperature sensors 12.1 to 12.4 are coupled to the control device 17 via signal lines.
  • the control device 17 is connected to the control unit 18.1 for influencing a process parameter and to an output device 19 for displaying and outputting a quality value.
  • connection of an output device 19 makes it possible to directly display a quality value derived by the temperature measurement, so that the manufacturing quality of the thread 13 can be monitored continuously at the output device 19.
  • the output device 19 can be formed by a monitor 20 and a printer 21.
  • the output device 19 is linked to the control device 17 via a microprocessor.
  • a temperature gradient within the cooling section can be detected directly in relation to the cooling of the filaments 3 for carrying out the method according to the invention by the temperature sensors 12.1 to 12.4. Furthermore, by means of the measuring points arranged at a height of the cooling section, temperature measurements over the profile of the filament bundle 5 are possible, which allow immediate information about the uniformity of the cooling. In this way, very precise measurements can be made of the actual cooling behavior of the filaments 3, so that orientations and crystallinities of the filament material during cooling can be influenced in a targeted manner. The production of threads with predetermined textilphysikalsichen properties or certain staining behavior or specific behavior is thus possible. By directly engaging in the cooling process, the highest thread qualities can be produced.
  • the measured value analyzes which are contained in the control device 17 for evaluating the temperature measured values, the means for data storage and the means for signal generation, depending on the given software configuration, can be carried out in different ways.
  • the deviation between the target value and the temperature measurement value is detected as a difference value and can be immediately displayed as a quality value on the monitor 20.
  • the temperature measured value curves with regard to a setpoint value overshoot can be displayed so that the course of the process and thus the yarn quality, in particular the uniformity of the yarn quality, becomes visible.
  • measured value fluctuations and blurring of the measurements are first compensated for by converting the temporally consecutive temperature values of the cooling air to a statistical mean value.
  • the mean values are formed in specific time segments, so that a course of the mean value also sets over time.
  • the mean value curve of the measured cooling air temperature can be assigned directly to a desired value or to a limit value range, preferably with an upper limit value and a lower limit value.
  • the difference values determined between the mean of the temperature measured values and the desired value or the limit value range likewise represent a measure of the quality of the thread or a measure of the uniformity of the cooling of the filaments. The difference values thus obtained can advantageously be displayed directly as a quality value.
  • the uniformity of the cooling of the filaments has a positive effect on uniform crystallinity and thus uniform dyeability of the filament.
  • the staining behavior of the thread can be defined by the quality values.
  • value ranges of the quality value can be defined which determine a permissible uniformity or an unacceptable uniformity of the dyeability of the thread.
  • quality ratings can be made already during the production of the thread.
  • the threads produced with a high quality value can be classified as A quality and, moreover, lower qualities can be classified as B or C qualities. From this it is possible, in particular for the further processing of the threads, to make advantageous classifications of the wound coils.
  • a measuring point is directly assigned to the spinning head, through which, for example, the polymer melt temperature control or else directly the Melting temperature of the polymer melt is detected.
  • a temperature sensor 12.5 is shown in dashed lines on the spinning head 1.
  • the temperature sensor 12.5 is likewise coupled to the control device 17 via a signal line. This makes it possible to perform additional evaluations and analyzes to determine the cooling behavior of the filaments 3.
  • FIGS. 1 and 2 a further embodiment of the device according to the invention for carrying out the method according to the invention is shown, which is formed substantially identical to the embodiment of FIGS. 1 and 2. In so far, reference is made to the above description and explained at this point only the differences.
  • the devices used for further treatment of the melt-spun thread are also shown by way of example.
  • the Discharge members are formed by godets or godet units that pull the thread 16 from the cooling section and from the spinneret 2.
  • the structure of the treatment device 27 is dependent on the thread type to be produced. Thus, fully drawn or partially drawn threads can be produced.
  • additional units such as turbulators, or tempering or KL syndromesel boots may be provided to perform individual treatment steps on the thread can.
  • a winding device 29 is provided.
  • the winding device 29 is preferably formed by a Spulrevolver having two held on a turntable spindles, which are used alternately for winding the thread. In that regard, a continuous process for the production of • yarn 16 is possible.
  • the winding device 29 is assigned a control device 18. 2, which is coupled to the control device 17.
  • another method variant of the invention can be carried out, in which the monitoring of the cooling air temperature inside the filament bundle is used to control the process.
  • the difference between the measured cooling air temperature T ⁇ and the required cooling air temperature Ts 0U is too large and thus an impermissible limit value is exceeded in an actual-target comparison between a temperature reading and a target value within the control device 17 , there is the possibility to generate from the difference signal, a further control signal for controlling the winding device 29.
  • the controller 18.1 for controlling the blower 9 and the control unit 18.2 to control the take-up device 29 can be controlled via the control device 17.
  • the control of the blower 9 causes a correction of the cooling of the filaments 3 in the required manner, so that an approximation is achieved between the measured cooling air temperature and the required cooling air temperature.
  • the takeup device 29 is controlled via the control device 18. 2 in such a way that a coil Change is performed.
  • the thread produced with a non-optimized cooling can be classified in a targeted manner by means of defined winding processes, so that during the further processing process the original bobbins can be provided in a defined manner according to specific criteria.
  • the embodiment shown in Fig. 4 is particularly suitable for the production of textile threads.
  • FIG. 5 shows a further exemplary embodiment of the device according to the invention for carrying out the method according to the invention.
  • the embodiment is substantially identical to the embodiment of FIG. 3, wherein the embodiment shown in Fig. 5 is shown in a side view. With reference to the description of FIG. 3, only the differences to the embodiment of FIG. 5 are explained. The components of the same function have been given identical reference numerals.
  • a plurality of multifilament threads 16 spun parallel to one another are produced at the same time.
  • the apparatus has a total of four spinning stations 33.1 to 33.4.
  • the spinning stations 33.1 to 33.4 is associated with a beam-shaped spinning head 1, which is connected via a melt feed 4 with a melt source, not shown here.
  • the spinning head 1 has a spinneret 2 for each spinning station 33.1 to 33.4. In that regard, a total of four spinnerets 2 are held side by side on the spinner 1.
  • the cooling device 6 is arranged with a blowing wall 7, which extends over the entire width of the spinning stations 33.1 to 33.4, so that the extruded in the spinning stations 33.1 to 33.4 filament strands 3 are guided at a distance to the blowing wall 7.
  • the blowing wall 7 is connected to a blower via a blowing chamber (see FIG. 3).
  • each spinneret 2 in the spinning stations 33.1 to 33.4 is assigned one of the preparation device 30 in each case.
  • the preparation device 30 has within the spinning stations 33.1 to 33.4 each have a conical shaped body 14.
  • a guide edge 15 wetted by a spin finish is formed, on which the filament strands 3 extruded from the nozzle bores of the spinneret 2 are guided.
  • the molded body 14 has for this purpose in the back distribution lines and liquid chambers, which are connected via a supply line 31 with a preparation pump 32. As a result, a continuous supply of a lubricant to the moldings 14 for wetting the leading edge 15 is ensured.
  • the fluid at the periphery of the leading edge 15 of the molded body 14 is continuously absorbed by the filament strands 3, so that a uniform preparation takes place.
  • Temperature sensors are respectively arranged at the pointed cone end of the molded body 14, wherein the temperature sensor 12.1 of the spinning station 33.1, the temperature sensor 12.2 of the spinning station 33.2, etc. are assigned.
  • the temperature sensors 12.1 to 12.4 are coupled to the control device 17 via signal lines.
  • the spinning units 33.1 to 33.4 associated with the preparation device 30 is held together with the moldings 14 and the temperature sensors 12.1 to 12.4 on a height-adjustable cross member 24.
  • the cross member 24 is formed height adjustable via a guide 25. The position of the molded bodies 14 and thus the degree of spreading within the cooling section and the height position of the temperature sensors 12.1 to 12.4 can thereby be selected and changed.
  • each thread guide 11 are provided in the spinning stations 33.1 to 33.4, which merge the filament strands 3 to a respective thread 16.
  • the control device 17, which is connected via parallel signal lines with the temperature sensors 12.1 to 12.4 in the spinning units 33.1 to 33.4, essentially has one or more means for evaluating the measured values by statistical methods, which are brought to an output device 9 for display and output.
  • the control device 17 is connected via a control line with a control device or a higher-level control device (not shown here).
  • the cooling air flow for cooling the filaments is formed by a cooling device which, as cross-flow blowing, generates a cooling air flow directed unidirectionally transversely. In principle, however, it is also possible to use a radially outwardly inwardly directed cooling air generation in order to cool the filament bundle.
  • the shaping of the guide means for spreading the filament bundles is exemplary, preferably circular or annular shaped bodies are used.
  • oval or oblong forms are also possible for spreading filament bundles.
  • both round, annular or rectangular arrangements of nozzle bores in a spinneret can be used.
  • the sensor means are also advantageous to place without additional guide means within the filament bundle
  • the apparatus and method of the present invention are suitable for making any multifilament yarns of synthetic materials with high uniformity in physical properties. This can be used to create textile, technical or carpet yarns.
  • the invention extends to the methods and apparatus in which a plurality of frusto-fibrous fiber strands are cooled from a polymeric material after being extruded by a cooling air or gas stream.
  • the invention is also suitable for monitoring a staple fiber melt spinning process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne un procédé de filage à chaud et de refroidissement d'un brin multifilaire, ainsi qu'un dispositif pour réaliser ce procédé. Selon l'invention, une pluralité de filaments est extrudée d'un polymère fondu, ces filaments étant regroupés en faisceau traversant un flux d'air de refroidissement orienté de manière transversale par rapport au faisceau de filaments. La température de l'air de refroidissement sortant lors du refroidissement des filaments est mesurée et surveillée. L'invention vise à saisir l'état de refroidissement des filaments et la propriété du fil en découlant. A cet effet, la température de l'air de refroidissement est mesurée en au moins un point de mesure à l'intérieur du faisceau de filaments. Pour cela, un capteur de température est disposé entre la filière et un guide-fil associé à la filière à l'intérieur du faisceau de filaments.
PCT/EP2006/011130 2005-11-24 2006-11-21 Procede et dispositif pour filer a chaud et refroidir un brin multifilaire avec mesure de la temperature de l'air de refroidissement a l'interieur du faisceau de filaments Ceased WO2007059914A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502006003037T DE502006003037D1 (de) 2005-11-24 2006-11-21 Verfahren und vorrichtung zum schmelzspinnen und abkühlen eines multifilen fadens mit kühllufttemperaturmessung innerhalb des filamentbündels
EP06829081A EP1951936B1 (fr) 2005-11-24 2006-11-21 Procede et dispositif pour filer a chaud et refroidir un brin multifilaire avec mesure de la temperature de l'air de refroidissement a l'interieur du faisceau de filaments
CN2006800437426A CN101313090B (zh) 2005-11-24 2006-11-21 用于熔纺和冷却复丝的方法和设备

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DE102005056041.5 2005-11-24
DE102005056041 2005-11-24

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EP2550381A2 (fr) * 2010-03-24 2013-01-30 Oerlikon Textile GmbH & Co. KG Procédé et dispositif pour le filage par fusion et le refroidissement d'une pluralité de fils synthétiques
CN102926011A (zh) * 2012-10-31 2013-02-13 张家港锦亿化纤有限公司 侧吹风装置中的保温板
WO2013076017A1 (fr) * 2011-11-26 2013-05-30 Oerlikon Textile Gmbh & Co. Kg Dispositif de fabrication d'un câble de filature
CN103307431A (zh) * 2013-06-24 2013-09-18 苏州锦凯纺织有限公司 带有滑轮的油剂泵
US9179469B2 (en) 2006-10-24 2015-11-03 Qualcomm Incorporated Enabling resource partitioning for wireless communication systems
WO2016110536A1 (fr) * 2015-01-09 2016-07-14 Oerlikon Textile Gmbh & Co. Kg Procédé et dispositif de surveillance de la qualité d'une pluralité de brins de fibre filés à l'état fondu d'un câble à fibres

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CN114855287A (zh) * 2022-04-07 2022-08-05 桐昆集团浙江恒盛化纤有限公司 仿羊绒纤维的生产工艺及其生产设备
DE102022002694A1 (de) 2022-07-25 2024-01-25 Oerlikon Textile Gmbh & Co. Kg Fadenführervorrichtung zum Führen von synthetischen Filamenten
CN117822139B (zh) * 2024-03-01 2024-07-09 常州市盛杰合力化纤有限公司 一种涤纶生产用长丝卷绕防断设备

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US3361859A (en) * 1960-04-29 1968-01-02 Du Pont Melt-spinning process
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DE10031106A1 (de) * 1999-07-02 2001-01-04 Barmag Barmer Maschf Schmelzspinnverfahren und Vorrichtung zum Schmelzspinnen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9179469B2 (en) 2006-10-24 2015-11-03 Qualcomm Incorporated Enabling resource partitioning for wireless communication systems
EP2550381A2 (fr) * 2010-03-24 2013-01-30 Oerlikon Textile GmbH & Co. KG Procédé et dispositif pour le filage par fusion et le refroidissement d'une pluralité de fils synthétiques
WO2013076017A1 (fr) * 2011-11-26 2013-05-30 Oerlikon Textile Gmbh & Co. Kg Dispositif de fabrication d'un câble de filature
CN102926011A (zh) * 2012-10-31 2013-02-13 张家港锦亿化纤有限公司 侧吹风装置中的保温板
CN103307431A (zh) * 2013-06-24 2013-09-18 苏州锦凯纺织有限公司 带有滑轮的油剂泵
WO2016110536A1 (fr) * 2015-01-09 2016-07-14 Oerlikon Textile Gmbh & Co. Kg Procédé et dispositif de surveillance de la qualité d'une pluralité de brins de fibre filés à l'état fondu d'un câble à fibres

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CN101313090B (zh) 2010-12-08
CN101313090A (zh) 2008-11-26
EP1951936A1 (fr) 2008-08-06
EP1951936B1 (fr) 2009-03-04
DE502006003037D1 (de) 2009-04-16

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