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WO2008107440A1 - Procédé de simulation d'une image affichée d'un produit fibreux formé d'une fibre multicolore ainsi que dispositif pour la mise en œuvre du procédé et procédé de fabrication d'une fibre bcf - Google Patents

Procédé de simulation d'une image affichée d'un produit fibreux formé d'une fibre multicolore ainsi que dispositif pour la mise en œuvre du procédé et procédé de fabrication d'une fibre bcf Download PDF

Info

Publication number
WO2008107440A1
WO2008107440A1 PCT/EP2008/052622 EP2008052622W WO2008107440A1 WO 2008107440 A1 WO2008107440 A1 WO 2008107440A1 EP 2008052622 W EP2008052622 W EP 2008052622W WO 2008107440 A1 WO2008107440 A1 WO 2008107440A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
image
appearance
virtual
pattern surface
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/EP2008/052622
Other languages
German (de)
English (en)
Inventor
Johannes Brauers
Björn GÖDDERZ
Til Aach
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
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 filed Critical Oerlikon Textile GmbH and Co KG
Publication of WO2008107440A1 publication Critical patent/WO2008107440A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/26—Arrangements facilitating the inspection or testing of yarns or the like in connection with spinning or twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices

Definitions

  • the invention relates to a method for simulating an appearance of a fiber product formed from a multicolored thread according to the preamble of claim 1, an apparatus for performing the method according to the preamble of claim 12 and a method for producing a BCF thread according to the preamble of claim 19 ,
  • simulation methods are known in the prior art in which an appearance of the fiber product is calculated from the parameters of the thread used.
  • Such a simulation method is evident from WO 2006/122722.
  • the known method is used as a thread parameter immediately captures the image of the thread and generated by an image analysis to a digital image data set.
  • the image data set is converted to the appearance of the fibrous product by means of simulation algorithms which, for example, simulate the knitting, weaving or tufting of the thread into the fiber product.
  • simulation algorithms which, for example, simulate the knitting, weaving or tufting of the thread into the fiber product.
  • a further object of the invention is to provide a method and a device for simulating an appearance of a fiber product with which the color structures of multifilament yarns can be reproducibly detected with high accuracy and predefined for the simulation calculation.
  • Another object of the invention is to provide a simulation method for simulating a color pattern of a carpet, which can be combined directly with a manufacturing process of a thread, so as to be able to carry out a targeted production of the colored thread.
  • the object of the invention is achieved by a method for simulating an appearance of a fiber product formed from a multicolored thread with the features of claim 1, by an apparatus for performing the method with the features of claim 12 and by a method for producing a BCF yarn the features of claim 19 solved.
  • the invention has the particular advantage that the data acquisition of the output data for the simulation calculation is performed with the highest accuracy.
  • a length of the thread with at least one wrap is previously wound on an image carrier, wherein a portion of the loop of the thread is guided on a pattern surface of the image carrier and in which the image of the pattern surface is detected with adjoining portion of the thread.
  • This allows a targeted separation of the thread to reach.
  • the environmental influences disturbing the image capture can be avoided or even predefined by the execution of the pattern surface.
  • the color spectra of the thread as well as the color structures of the thread can be precisely recorded and then transferred to digital image data by high-precision image analysis.
  • the digital image data thus contains the information that is very close to the actual appearance of the thread.
  • the detection of the image of the thread according to the invention thus ensures a highly realistic simulation result for the fiber product.
  • the development of the invention is preferably used in which a plurality of sections of the thread are spaced from each other on the pattern surface and as an image be recorded.
  • the distance between see the sections of the thread is chosen such that the emerging from the composite thread individual filament strands do not get in mutual contact.
  • the distances between the sections of the threads on the pattern surface are dimensioned such that each individual section is individually generated with respect to the pattern surface.
  • Optical data acquisition devices in the form of scanners have proven particularly useful for detecting the image of the pattern surface with the thread sections.
  • the pattern surface can be scanned in the form of a cell or segmented by the scanner and detected.
  • commercially available scanners could already be used to record the capture of the image of a pattern surface on an image carrier and store it as an image file.
  • the multifilament structure of the filaments requires a high image resolution, which should be preferably at 300 dpi, at least at a resolution of 200 dpi (dot per inch).
  • the pattern surface preferably has a gray background as the background, so that the filaments of the thread stand out clearly from the pattern surface and can be included in the analysis.
  • the gray grid is particularly color neutral, so that the thread is not affected by color and appears in its real color spectrum.
  • the gray patterning of the pattern surface is preferably produced by a laser printer, so that even with multiply looped image carriers, the pattern surface contains a uniform background appearance with high uniformity of the screening.
  • the image data set of the image obtained by the image analysis is thus outstandingly suitable for creating an appearance of a virtual thread.
  • the appearance of the virtual thread shows a very high agreement with the thread pieces held on the pattern surface.
  • the data of the appearance of the virtual thread can advantageously be stored as a graphics file, which can be called up as a basis for further arithmetic operations at any time.
  • the graphics file of the virtual thread is further processed by means of specific algorithms by means of arithmetic operations.
  • individual product and process data can be calculated from the graphic file of the virtual thread with the aid of production algorithms, which serve the production process of the thread.
  • product data for example, the masterbatches and base granules used for melt spinning could be specified for the particular coloring of the thread.
  • swirling and crimping parameters could be determined as process data in order to combine the differently colored sub-threads into the BCF thread.
  • the invention is primarily directed to simulating the appearance of a virtual fiber product.
  • the graphic data set of the virtual thread is converted by means of simulation algorithms in arithmetic operations to a graphic data set of a virtual fiber product.
  • the graphic data set of the virtual fiber product can be displayed directly on a visualization device so that a multicolored thread directly from which a fiber product produced therefrom can be assigned.
  • the inventive device for carrying out the method according to the invention is characterized in particular by an image carrier having a pattern surface on which a longitudinal portion of the thread is wound with at least one loop and in which the portion of the wrap of the thread is guided on the pattern surface of the image carrier.
  • the image carrier is assigned to the image acquisition device.
  • the image carrier is preferably formed by a plate which has the pattern surface at least on its front side.
  • the plate can also be advantageously carried out such that both the front and the back carries a pattern surface.
  • the plate preferably has a plurality of spaced-apart thread guide grooves on two opposite longitudinal sides. in each of the guide grooves of the wound around the plate thread is guided. This reproducible distances and thread layers in the wraps image carrier can be executed.
  • the plate in the end regions on one of the longitudinal sides or both longitudinal sides each have a retaining slot in which the thread is fixed with a beginning and an end.
  • the plate is preferably formed from a light cardboard, so that the front can be printed directly with a gray grid.
  • the front of the plate is covered with a foil or other pattern template.
  • the image acquisition device can preferably be formed by an optical data acquisition device in which the sample surface is scanned in a cell-shaped or segment-shaped manner.
  • an optical data acquisition device in which the sample surface is scanned in a cell-shaped or segment-shaped manner.
  • commercial scanners can be used to detect such pattern surfaces with wound-up pieces of thread and transfer them to a digital image data record.
  • the method according to the invention for producing a BCF thread which is formed from a plurality of differently colored multifilament partial threads, is characterized in that a BCF thread is provided which supplies the desired surface patterns during further processing into a carpet.
  • the simulation results are evaluated shortly after the start of the process in order to directly optimize the process parameters for spinning, drawing, curling and swirling and winding of the threads.
  • the current manufacturing process can be monitored and controlled by taking an image of the thread is compared and compared with the deposited appearance of the virtual thread. The adjustment of the process parameters can then be carried out depending on the comparison.
  • Fig. 1 shows schematically a flow chart of the inventive method for
  • FIG. 2 schematically shows an exemplary embodiment of the device according to the invention for carrying out the method according to the invention.
  • FIG. 3 schematically shows an exemplary embodiment of an image carrier for accommodating a longitudinal section of a multicolored thread
  • FIG. 4 schematically shows a cross-sectional view of the image carrier from FIG. 3
  • FIG. 5 schematically a variant of the inventive method for producing a BCF thread
  • a scheme of the method according to the invention is shown.
  • a starting point for each simulation of an appearance of a virtual fiber product is a length of a multi-colored thread, from which the fiber product is to be formed by further treatment.
  • the length of the thread is wound onto an image carrier.
  • the image carrier has a pattern surface on which at least a portion of a Looping of the thread is performed. An embodiment of such an image carrier will be explained in more detail below.
  • the pattern surface forms on the one hand the recording of the thread piece and on the other hand an optical background.
  • the background of the pattern surface is preferably formed by a pattern, for example in the form of a gray screen.
  • the image of the pattern area is detected with one or more spaced apart pieces of thread by an image acquisition device.
  • the pattern surface is preferably scanned by optical data acquisition.
  • optical data acquisition devices which are also known as scanners, perform a cell-shaped or segmental scanning of the pattern surface, and the image data digitized by the optical data acquisition are subsequently subjected to image analysis.
  • first adjustments in the local brightness ranges can be performed.
  • the background pattern on the pattern surface has the same brightness at all points of the pattern surface.
  • the pattern is identified in the background and marked. From this a mask can be generated to separate the background from the thread. Based on this mask, every position in the pattern area is detected exactly. Subsequently, the extraction of the threads of the pattern surface begins.
  • the extracted segments thus obtained can now be joined together by a computing operation, for example a transformation into a virtual thread.
  • the result of the image analysis thus leads to a graphic data set of a virtual thread.
  • the graphic data record can be stored, for example, as a file or fed directly to the further simulation calculation.
  • the Gra- The virtual thread fictional dataset contains the structure and color of the thread. In addition, background information can still be stored.
  • the graphic data record is transferred by means of stored simulation algorithms to a graphic data record of a virtual fiber product.
  • simulation algorithms is meant computations that simulate production, processing or treatment of the yarn to arrive at the fiber product.
  • tufting processes in carpet production can be represented by appropriate arithmetical operations, so that the graphic data of the virtual thread can be transferred directly into graphic data of a carpet.
  • the graphic data set of the virtual fiber product can now be displayed directly as an appearance in a visualization device.
  • a carpet designer can recognize to which color structure the multicolored thread would lead in a carpet. This allows both thread manufacturers and carpet manufacturers to examine in advance what a carpet with a particular thread would look like.
  • the graphic data set of the virtual fiber product can either be stored or printed out as an appearance, wherein the appearance of the virtual fiber product could be stored together with the image carrier to a sample catalog.
  • Such pattern catalogs could thus include a variety of multicolor threads combined with the appearances of the virtual fiber products.
  • the data generated by the image acquisition of the multicolored thread can be used for further arithmetic operations.
  • the graphic data record of the virtual thread could be combined with a further-processing rule, for example to obtain process data for producing the fiber product.
  • the graphics data of the virtual thread by means of manufacturing algorithms by computing operations to Product and process data for the production of the thread are led.
  • a color can be derived from the color and color structure of the thread so that the masterbatches and base granules used can be predetermined in their composition as product parameters.
  • the color structure of the thread is essentially achieved by texturing and swirling the multifilament sub-threads, so that process parameters for setting the texturing and swirling could be calculated from the graphic data set.
  • the method according to the invention thus offers a versatile applicability both for the manufacturer of the thread and for the manufacturer of the fiber product.
  • the flow diagram shown in FIG. 1 could thus also be used to simulate an appearance of the virtual thread.
  • FIG. 2 schematically shows a device for carrying out the method according to the invention.
  • the device essentially consists of an image acquisition device 1, an evaluation device 3 and a visualization device 4.
  • the image acquisition device 1 is assigned an image carrier 8 which holds the multicolored thread 2 in a predefined manner for image acquisition.
  • the image carrier 8 is formed by a plate 12, which has a plurality of guide grooves 15 on their longitudinal sides 16.1 and 16.2, respectively. On the longitudinal side 16.1, the guide grooves 15 in the upper region associated with a holding slot 17.1. On the opposite side on the longitudinal side 16.2, a second retaining slot 17.2 is provided in the lower region.
  • a front side 13 of the plate 12 forms a pattern surface 9.
  • the pattern surface 9 has a pattern, which in this case is formed by a gray grid.
  • the pattern of the pattern surface 9 is preferably designed such that a on the surface of the Pattern surface 9 guided mutlif ⁇ ler thread is clearly identifiable in its structure and color.
  • the gray scale of the pattern surface is applied in this case to a film which is glued to the front side 13 of the plate 12.
  • the front side 13 of the plate 12 is larger than the pattern surface 9 is formed in this embodiment, wherein outside the pattern surface 9 on the front side 13, an additional marking 18 is provided.
  • the marking 18 can contain all data relevant to the multicolored thread, such as, for example, product and process data.
  • one of the thread ends 19.1 is fixed in the retaining slot 17.1.
  • the thread 2 is then wound with a plurality of thread wraps 10 on the image carrier 8, wherein the thread 2 spans the rear side 14 and the front side 13 of the plate 12.
  • the Fadenumschlingonne 10 are guided in the guide grooves 15 of the longitudinal sides 16.1 and 16.2.
  • the guide grooves 15 on the longitudinal side 16.1 and the guide grooves 15 on the longitudinal side 16.2 are arranged at a distance from each other, so that the Fadenumschlingept 10 are guided at the front 13 at a distance from each other.
  • the thread wraps 10 thus each form two sections of the thread 2 on the pattern surface 9, which run parallel next to one another.
  • the second thread end 19.2 of the longitudinal section of the thread 2 is fixed after winding on the retaining slot 17.2 in the lower region of the image carrier 8.
  • the number of turns is only an example.
  • a large number of thread Wrap wraps on the image carrier as shown for example in Fig. 2.
  • a longitudinal section of the thread of a total of 10 m was wound.
  • the shape of the image carrier 8 is only beispie 1- adhesion.
  • the invention is essential that a clear detection and separation of the thread on a pattern surface of the image carrier is possible in subsequent image analysis.
  • the image carrier 8 is supplied to the image capture device 1 for detecting the image of the thread pieces on the pattern surface 9.
  • the image acquisition device 1 is implemented in this embodiment by an optical data acquisition device 11, so that the front side 13 of the image carrier 8 with the pattern surface 9 are detected by optical means line by line or in segments.
  • Commercially available scanners can be used as optical data acquisition devices 11 in order to obtain the image of the pattern area as a digital image data record.
  • the provided by the optical data acquisition device 11 digital image data set of the pattern surface 9 with the wound portions of the thread 2 can be directly an evaluation device 3 perform. Basically, however, it is also possible to temporarily store the image data set as a file and to feed it to an evaluation device 3 at a later time. In this case, all customary and known data transmission methods can be used, so that the image capture device 1 and the evaluation device 3 can be placed both at one location in common or at different locations.
  • the digital image data record of the image is supplied to an image analysis.
  • a graphic data set can thus be generated which represents a virtual thread.
  • the virtual thread here has the features that characterize in particular the color structure and the color spectrum of the multi-colored thread is.
  • the graphic data set of the virtual thread can be used for various simulation calculations so that, on the one hand, a fiber product made from it can be simulated directly and the appearance of the fiber product can be displayed.
  • the evaluation device 3 is connected to the visualization device 4.
  • the evaluation device 3 is connected to an output device 5, for example a printer.
  • the evaluation device 3 In order to use the process data and product data of the thread or process data of the fiber product obtained from the simulation calculation for a production process, the evaluation device 3 has a digital data output 6 with which the simulated data could be fed directly to a production process.
  • the inventive method is particularly advantageous in the production of so-called BCF threads applicable to simulate a carpet produced from the BCF thread.
  • BCF threads are preferably produced from three differently colored partial threads.
  • the method according to the invention can advantageously be combined with the device known from WO 2006/122722 for producing a BCF thread.
  • To produce a BCF thread several differently colored partial threads are first spun and drawn from polymer melts in a BCF spinning process. The multifilament yarns are crimped after stretching and combined to form the BCF yarn. The merging of the multif ⁇ len partial threads can be done by swirling or immediately by crimping.
  • FIG. 5 shows a flow diagram of a possible embodiment of the method according to the invention for producing a BCF thread.
  • a pattern BCF thread can first be produced, which is wound onto an image carrier and, after acquisition of the image, fed to an image analysis.
  • the graphic data of the virtual thread generated by the image analysis serve to simulate a virtual carpet appearance.
  • the color pattern produced in the carpet with the BCF thread can now be compared with a desired carpet pattern in an actual-target comparison. In the event that the simulated appearance of the carpet matches the desired carpet pattern, the manufacturing process is released so that the BCF yarn is produced in a predetermined manner.
  • the manufacturing process can be changed to perform patterning of a BCF yarn with at least one changed process parameter or product parameter.
  • the graphic data of the virtual thread can be used to generate possible product parameters and process parameters from arithmetic operations with the aid of production algorithms.
  • the inventive method is thus suitable both for thread manufacturers and for manufacturers of fiber products such as carpet manufacturers to account for desired color pattern in a fiber product already in the production of the thread can.
  • a carpet manufacturer can give specific specifications to the thread manufacturer to obtain a predefined BCF thread.
  • the thread manufacturer can show a carpet manufacturer based on the BCF thread the resulting color pattern of the carpet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'invention concerne un procédé et un dispositif (1, 3, 4) de simulation d'une image affichée d'un produit fibreux formé d'une fibre multicolore. A cet effet, on saisit une reproduction d'une fibre multicolore (2), on génère un ensemble de données par une analyse d'image et on la convertit en une image affichée au moyen de calculs de simulation. Pour la saisie de la reproduction de la fibre, on enroule au préalable selon l'invention une longueur de la fibre avec au moins une spire sur un support d'image (8), dans lequel on guide une portion de la spire de la fibre sur une surface modèle du support d'image et dans lequel on saisit la reproduction de la surface modèle avec la portion de fibre déposée.
PCT/EP2008/052622 2007-03-08 2008-03-04 Procédé de simulation d'une image affichée d'un produit fibreux formé d'une fibre multicolore ainsi que dispositif pour la mise en œuvre du procédé et procédé de fabrication d'une fibre bcf Ceased WO2008107440A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007011286.8 2007-03-08
DE102007011286 2007-03-08

Publications (1)

Publication Number Publication Date
WO2008107440A1 true WO2008107440A1 (fr) 2008-09-12

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ID=39495162

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/052622 Ceased WO2008107440A1 (fr) 2007-03-08 2008-03-04 Procédé de simulation d'une image affichée d'un produit fibreux formé d'une fibre multicolore ainsi que dispositif pour la mise en œuvre du procédé et procédé de fabrication d'une fibre bcf

Country Status (1)

Country Link
WO (1) WO2008107440A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113962962A (zh) * 2021-10-22 2022-01-21 常州市新创智能科技有限公司 一种玻纤的短切纱罗拉绕丝检测方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388441A (en) * 1966-01-04 1968-06-18 Commercial Carpet Corp Textile weave simulator and method
GB1413169A (en) * 1972-10-19 1975-11-05 Wira & Mather Apparatus for viewing simulated fabrics
GB2045690A (en) * 1979-03-31 1980-11-05 Boyle & Son Ltd Preparing simulated fabric
EP0199552A2 (fr) * 1985-04-18 1986-10-29 E.I. Du Pont De Nemours And Company Procédé pour la simulation par ordinateur de l'apparence d'une étoffe tricot-chaîne
US5564169A (en) * 1993-12-03 1996-10-15 Milliken Research Corporation Method and apparatus for optically simulating moire fabric
US5671061A (en) * 1992-06-18 1997-09-23 Zellweger Luwa Ag Method and apparatus for assessing the effect of yarn faults on woven or knitted fabrics
WO2006122722A1 (fr) * 2005-05-14 2006-11-23 Oerlikon Textile Gmbh & Co. Kg Procede et dispositif de simulation d'un motif de surface visuel d'un produit a base de fibres et procede et dispositif de production d'un fil bcf

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388441A (en) * 1966-01-04 1968-06-18 Commercial Carpet Corp Textile weave simulator and method
GB1413169A (en) * 1972-10-19 1975-11-05 Wira & Mather Apparatus for viewing simulated fabrics
GB2045690A (en) * 1979-03-31 1980-11-05 Boyle & Son Ltd Preparing simulated fabric
EP0199552A2 (fr) * 1985-04-18 1986-10-29 E.I. Du Pont De Nemours And Company Procédé pour la simulation par ordinateur de l'apparence d'une étoffe tricot-chaîne
US5671061A (en) * 1992-06-18 1997-09-23 Zellweger Luwa Ag Method and apparatus for assessing the effect of yarn faults on woven or knitted fabrics
US5564169A (en) * 1993-12-03 1996-10-15 Milliken Research Corporation Method and apparatus for optically simulating moire fabric
WO2006122722A1 (fr) * 2005-05-14 2006-11-23 Oerlikon Textile Gmbh & Co. Kg Procede et dispositif de simulation d'un motif de surface visuel d'un produit a base de fibres et procede et dispositif de production d'un fil bcf

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113962962A (zh) * 2021-10-22 2022-01-21 常州市新创智能科技有限公司 一种玻纤的短切纱罗拉绕丝检测方法
CN113962962B (zh) * 2021-10-22 2022-07-22 常州市新创智能科技有限公司 一种玻纤的短切纱罗拉绕丝检测方法

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