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

Definitions

• Method and device for simulating a visual surface pattern of a fiber product and method and device for producing a
• the invention relates to a method for simulating a visual surface pattern of a fiber product according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 14, and to a method for producing a BCF yarn according to the preamble of claim 18 and a device for carrying out the method according to the preamble of claim 22.
• a strand-shaped fiber or fiber bundle is produced in a separate upstream process as a precursor.
• the flat fiber product can then be produced by further processing of the fibers and fiber bundles by knitting, weaving, laying, etc. in a downstream process.
• the quality in particular the visual appearance of the sheet-like fiber product is influenced substantially by the nature of the fiber and its manufacturing process.
• a BCF yarn is used as a fiber bundle, which is formed from several differently colored multifilament yarns.
• different color patterns result in the carpet fabric, for example in order to avoid the appearance of individual colors, intensive mixing of all threads in the BCF yarn is required.
• a further object of the invention is to provide a method and a device for simulating a visual surface pattern of a fiber product, which can be integrated directly in a manufacturing process of a fiber bundle in order to be able to perform process parameter settings defined before or during the production process.
• the object of the invention is a method for simulating a visual surface pattern of a fiber product with the features of claim 1, by an apparatus for performing the method with the features of claim 14, by a method for producing a BCF yarn with the features of claim 18 and an apparatus for performing the method according to claim 22 solved.
• the invention is based on the recognition that the appearance of a flat fiber product, for example a carpet, is essentially shaped by the appearance of the fiber.
• the production methods of the flat fiber products produce a more or less predefined and regular filing and linking of short lengths of the fiber bundle, which contribute to the appearance of the surface of the fiber product.
• a connection exists between an image of a longitudinal section of the fiber bundle and a visual surface pattern of the fiber bundle processed in a planar manner into a fiber product.
• the visual surface pattern can be predicted from an image of a longitudinal section of the fiber bundle.
• the optical appearance of the strand-like fiber bundle is thus used.
• a detailed recording of several parameters of the fiber bundle can thus be completely eliminated.
• the image of the fiber bundle can be detected automatically without the assistance of an operator and, given given analysis algorithm rhythms, leads quickly and precisely to a preview of the final fiber product.
• any information means that stores the optical nature of a fiber strand in particular the color spectrum of the fiber strand.
• the development of the method according to the invention in which a running thread is sensed, is particularly advantageous in order to be able to make an online determination of the carpet quality in a production process of a fiber strand of, for example, a BCF thread composed of a plurality of colored individual threads.
• the developments of the method according to the invention according to claims 3 and 4 are particularly advantageous.
• the longitudinal sections of the fiber bundle are placed in several juxtaposed layers of thread to capture a partial image of the thread layers as an image.
• the longitudinal sections of the fiber bundle can also be wound into a coil, so that the image of at least one partial section of the coil is detected.
• the image is advantageously recorded by one or more photocells, so that the signals of the photocells can be fed directly to an image analysis.
• the light signals can be converted by the photocells directly into electrical charges.
• the digital data is fed to an image analysis unit, which extract the required billing data with corresponding image analysis algorithms and forward it to the evaluation electronics for calculating the visual surface patterns.
• the image is stored in each case as a digital pattern and the data of a plurality of digital patterns are fed to the image analysis unit.
• the process according to the invention is particularly effective in the production of multicolor yarns which are suitable for producing a color pattern in a fiber sample. serve.
• the process variants according to claim 9 and 10 are preferably used.
• the integration in a manufacturing process of the fiber bundle according to claims 12 and 13 is particularly advantageous because the simulation results can be used directly for setting and changing process parameters in the manufacturing process of the fiber bundle.
• the process parameters of the manufacturing process of the fiber bundle can be influenced by a downstream process for producing a predetermined fiber product.
• the changes of one or more process parameters can be generated in such a way that the simulated surface pattern is compared with a stored desired-default surface pattern.
• the analysis of an image or a comparison of the image with a stored pattern image is already used to generate changes of one or more process parameters.
• the method according to the invention for simulating visual surface patterns of a fiber product thus enables completely new methods for producing fiber bundles.
• the inventive method for producing a BCF yarn consisting of several differently colored multifilament yarns in a BCF spinning process is characterized in that a BCF yarn is provided which provides the desired surface pattern in the further processing to a carpet.
• the simulation results can be evaluated before the start of the process in order to directly define the process parameters for spinning, drawing, curling, swirling and winding up the threads.
• it is also possible, despite a selected process parameter setting during the process to carry out an ongoing simulation in order to: change the setting of at least one of the process parameters depending on a simulation result.
• the current production process can be monitored and controlled by detecting an image of a longitudinal section of the BCF yarn and comparing it with a stored pattern image. The setting of the parameter can then be changed depending on the comparison.
• the device according to the invention according to claim 14 is characterized by a simple and flexible arrangement.
• the image capture device for sensing image of a longitudinal section of the fiber bundle can advantageously also be used in a manufacturing process of the fiber bundle.
• the image acquisition device can detect the length of the fiber bundle at any positions within the process.
• the image acquisition device is advantageously associated with a package handling device or the winding machine of the production process.
• the image acquisition device is preferably equipped with one or more photocells, which are arranged to form a surface sensor or a line sensor.
• CCD sensors are particularly suitable for maximum resolution and
• the image capture device can do this
• the image acquisition device is connected to an image analysis device associated with the evaluation device.
• the evaluation electronics directly has an interface to a control device, by means of which the production process can be controlled.
• direct data can be exchanged and parameter changes of the process parameters can be initiated without delay.
• classifications of the coils produced can thus also be advantageously carried out so that a high uniformity of the original product can be achieved when processing the coils into a carpet fabric.
• the inventive device according to claim 22 is particularly suitable for producing a composite thread of a plurality of visually different individual threads according to predetermined pattern images in order to obtain a uniform quality of the composite thread for a later surface product.
• a high uniformity of the visual properties can be achieved by the device according to the invention.
• an image acquisition device is provided in order to be able to make an actual target comparison between images, for example of the color spectra, directly by coupling with an evaluation unit.
• the development of the device according to the invention is particularly advantageous, in which the image acquisition device is assigned to a coil created by the take-up.
• the image acquisition device is assigned to a coil created by the take-up.
• the evaluation device is coupled to a control device, by means of which at least one process parameter can be changed. This allows possible deviations in the visual appearance of the fiber strand to be converted directly into process changes.
• Fig. 1 shows schematically a first embodiment of the device according to the invention for carrying out the method according to the invention
• Fig. 2 shows schematically a further embodiment of the invention
• FIG. 3 shows schematically an image of a longitudinal section of a fiber bundle
• FIG. 4 shows schematically an image of a partial section of a coil
• FIG. 5 shows schematically a visual surface pattern of a fiber product
• FIG. 6 shows schematically an apparatus according to the invention for carrying out the production method according to the invention for the production of a BCF yarn
• Fig. 1 shows a first embodiment of a device according to the invention for carrying out the method according to the invention for simulating a visual Surface pattern of a fiber product shown schematically.
• the device has a sensor device 2, which is arranged in the vicinity of a fiber bundle 1.
• the sensor device 2 is designed as an image acquisition device 3, by means of which an image of a longitudinal section of the fiber bundle 1 is detected.
• the fiber bundle 1 can be sensed as a stationarily clamped fiber sample or in a running process by the sensor device 2.
• the sensor device 2 is coupled to an image analysis device 4, which is assigned to an evaluation device 5.
• the evaluation device 5 is coupled to a visualization device 6, by means of which a display of results is possible.
• the image acquisition device 3 preferably has CCD sensors, by means of which the light signals can be converted directly into charges.
• the sensor signals are supplied to the image analysis device 4, in which an image analysis unit performs processing and analysis of the data by means of appropriate algorithms and determines extracted calculation data.
• the extracted calculation data are assigned to the evaluation device 5, which consists of evaluation electronics with corresponding calculation software in order to calculate a visual surface pattern of a fiber product by simulation.
• the visual area pattern can then be displayed via the visualization device 6.
• a visualization device 6 a monitor is preferably used.
• Method can be improved in the capture of the image so that the
• Image acquisition device 3 associated with a light source to amplify the outgoing of the fiber bundle light signals.
• a light source could, for example a laser can be used.
• optics can be used to allow bundling of the light beams to produce the image.
• FIG. 2 schematically shows a further exemplary embodiment of a device according to the invention for carrying out the method according to the invention.
• the design of the device is essentially identical to the exemplary embodiment according to FIG. 1, so that reference is made to the aforementioned description and only the differences will be explained at this point.
• the longitudinal section of the fiber bundle is wound up into a coil 8.
• a partial section of the front side 9 of the coil 8 is received by the image acquisition device 3.
• the image can in this case extend only over a partial section or over the entire end face 9 of the coil 8.
• the image acquisition device can be guided in such a way that, for example, the front side is completely detected by a line sensor.
• the image acquisition device 3 is coupled to the image analysis device 4 and the evaluation device 5.
• the evaluation device 5 has an additional interface to a control device 7, which is assigned, for example, to the manufacturing process of the fiber bundle. In that regard, an immediate data connection between the evaluation device 5 and the control device 7 is given in order to make possible from the simulation results possible parameter changes of the manufacturing process.
• the evaluation device 5 is coupled to the visualization device 6 in order to be able to display the simulated surface patterns.
• the apparatus shown in Fig. 2 can be used both in a station for inspection to the coils to make, for example, a coil sorting and classification can. However, it is also possible to use the directly in the manufacturing process of the fiber bundle to be able to intervene in an online circuit simultaneously in the process.
• FIGS. 1 and 2 for carrying out the method according to the invention are essentially based on image processing.
• an image of the fiber bundle 1 is generated by the image capturing apparatus.
• FIG. 3 an illustration of a multicolor fiber bundle is shown in FIG.
• the illustration in Fig. 3 is black and white, so that the color differences in different shades of gray reflects.
• the fiber bundle here represents a BCF yarn, which is formed from a total of three differently colored individual threads. The monofilaments are in turn formed by a multiplicity of filaments.
• FIG. 1 an illustration of the fiber bundle 1 is generated by the image capturing apparatus.
• FIG. 3 an illustration of a multicolor fiber bundle is shown in FIG.
• the illustration in Fig. 3 is black and white, so that the color differences in different shades of gray reflects.
• the fiber bundle here represents a BCF yarn, which is formed from a total of three differently colored individual threads.
• the monofilaments are in turn formed by a multiplicity of filaments.
• the inventive method can be used to generate information from the image, which information is converted into a theoretical surface pattern with the aid of analysis algorithms.
• the simulated area pattern thus allows a preview of the final fiber product.
• certain surface patterns in the fiber product - in this case a carpet - can now be changed in the manufacturing process of the BCF yarn, for example, in the mixing of the monofilament in the BCF yarn.
• a predetermined surface pattern of the fiber product can already be adhered to during the production of the fiber bundle.
• An image is hereby an analogue or digital information means with which the visual characteristic property of the fiber strand can be specified.
• the Forming an image by a color spectrum which specifies the composition of the individual colors in the longitudinal section of the fiber strand.
• FIG. 4 shows an image of a partial view of a coil.
• the image shows a plurality of thread layers, wherein the sections of the fiber bundles are arranged side by side and one above the other.
• the figure already shows a surface pattern formed by winding the fiber bundle.
• FIG. 5 An example of a simulated area pattern is shown in FIG. This is a multi-colored surface pattern of a carpet, which appears in the black and white image through different shades of gray.
• the surface pattern illustrated in FIG. 5 could, for example, have been calculated from the image of the fiber bundle shown in FIG. 3 or from the image of the coil shown in FIG.
• FIG. 6 shows an exemplary embodiment of a device according to the invention of a BCF spinning process in order to carry out the method according to the invention for producing a BCF yarn.
• the device has a spinning device 12, in which a plurality of spinnerets are arranged side by side for extruding a plurality of filament bundles.
• three spinnerets 13.1, 13.2 and 13.3 are arranged side by side.
• Each of the spinnerets 13.1 to 13.3 is supplied with a colored polymer melt, wherein a different colored polymer melt is extruded in each of the spinnerets.
• three differently colored filament bundles can be extruded simultaneously.
• a cooling device 16 for cooling the filament bundles is provided, which is provided by a preparation ration device 15 are summarized in each case a thread 14.1, 14.2 and 14.3.
• the threads 14.1, 14.2 and 14.3 are brought together in parallel in several treatment stages and crimped by means of a crimping device 19 to form a BCF yarn 21.
• the treatment stages in this case include a predispersing device 17 for separately feeding the threads 14.1 to 14.3, a withdrawal device 18 for drawing off and drawing the threads.
• the crimping device 19 is in this case designed as a Stauchk Hursel Surprise, through which the threads are 14.1 to 14.3 textured to a yarn plug.
• the yarn plug is then cooled by a cooling drum 20 and withdrawn to the BCF yarn 21.
• re-swirling takes place through the post-swirling device 22.
• the BCF yarn 21 is wound into a bobbin 8.
• the coil 8 is associated with an image acquisition device 3, through which an image of a partial section of the coil 8 is detected.
• the image capture device 3 is coupled to an image analysis device 4 by which the data of the image are analyzed and extracted. From the extracted calculation data, an analysis is carried out by means of the evaluation device 5.
• the evaluation device 5 is coupled to a control device 7, which controls the entire BCF spinning process.
• a pattern image of a desired coil view could be stored in the evaluation device 5, which is compared with the actual image of the coil 8.
• the generation of a control command which is given directly to the control device 7, takes place.
• one or more parameters could be generated based on the control command. Changes in the process parameters are determined and initiated.
• the nature of the monofilaments and the mixing of the filaments with the BCF yarn can be influenced in such a way that a desired appearance of the coils 8 is achieved.
• This variant of the method can also be used advantageously with a modified device for online monitoring of a BCF yarn.
• the image acquisition device 3 is arranged in the region between the post-swirling device 22 and the winding device 23. This situation is shown in dashed lines in FIG.
• the image acquisition device 3 is directly associated with the running thread 21, so that there is a continuous acquisition of an actual image of a defined length of the BCF yarn 21.
• the actual image can be compared via the evaluation device 5 with a stored pattern image, for example a predefined color spectrum of the BCF yarn.
• a stored pattern image for example a predefined color spectrum of the BCF yarn.
• By coupling the evaluation device 5 with the control device 7 undesired deviations between the actual image and the pattern image can be generated in corresponding control signals in order to change one or more settings of process parameters.
• a simulation calculation is carried out in the evaluation device 5 from the calculation data of the image in order to determine the visual surface pattern of a carpet.
• the calculated surface pattern is compared with a stored desired-default surface pattern, m depending on the comparison analysis via the controller 7, the desired parameter adjustments.
• the method variant can be advantageously carried out with both device variants, so that both the sensed coil and the sensed thread can be used for an online simulation.
• the method according to the invention and the device according to the invention thus enable completely new ways in the production of fiber products, which are processed in a further processing process by knitting, weaving or laying to a surface pattern of a fiber product. Simulations can be used to create new surface patterns of the fiber product.
• the invention enables production targeted to the final product in fiber production.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=36609591

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (7)

• 2006
  • 2006-05-12 WO PCT/EP2006/004490 patent/WO2006122722A1/de active Application Filing
  • 2006-05-12 EP EP06742902A patent/EP1883903A1/de not_active Withdrawn
  • 2006-05-12 CN CNA2006800165991A patent/CN101223554A/zh active Pending
• 2007
  • 2007-11-13 US US11/939,221 patent/US20080126039A1/en not_active Abandoned

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events