JP2015117461A - Rewinder operating method and rewinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a regulating function of a rewinder.SOLUTION: An operating method of a rewinder comprises following processes: creating a digital image of a reference cop (9A) with known yarn length; finding a parameter representing a cross section of a wound yarn (48A) of the reference cop (9A); finding a ratio between the yarn length of the reference cop (9A) and the parameter representing the cross section of the wound yarn (48A) of the reference cop (9A); creating a digital image of the cop (9) supplied to a conveyor system (3); detecting a length of yarn pulled out of the cop (9) during rewinding; connecting information on the digital image of the cop (9), the length of yarn pulled out of the cop (9), and the ratio determined for the yarn length of the reference cop (9A) and the parameter representing the cross section of the wound yarn (48A) of the reference cop (9A); and regulating the rewinder (1) depending on the connecting result.

Description

  The present invention relates to a method of operating a winder and a winder for carrying out the method.

  German Patent Application Publication DE 394 42 304 A1 discloses a measuring device for determining the thread volume of a tube thread. This measuring apparatus has an array of individual sensors, and each individual sensor is composed of a light transmitter and a light receiver opposed to the light transmitter. While the tube yarn is passed in the vicinity of the sensor, scanning is performed a plurality of times by the sensor. In this way, at least a rough two-dimensional image of the tube thread is generated despite the one-dimensional configuration of the individual sensors. The yarn volume of the tube yarn is obtained from this two-dimensional image. Based on this yarn volume, a defined control process must be derived. By comparing with the yarn volume of the reference tube yarn wound up without error, the correspondence between the tube yarn and a predetermined winding unit and / or process can be specified. Based on the obtained parameters, for example, it is possible to specify the correspondence between a plurality of different tube yarns and different yarn portions. Furthermore, it is also possible to distinguish between a fully-filled tube yarn and a tube yarn having a remaining yarn. Depending on the winding state, the winding speed and yarn tension in each winding unit must be adjusted appropriately. However, DE3942304A1 has no specific description on how to adaptively adjust the winding speed and the yarn tension during the drawing process.

  European patent application publication EP 1961687 A2 is directed to the use of a digital photographic camera to evaluate tube yarn. This determines the amount of yarn wound on the tube and, based on this information, transports the tube yarn to the tube yarn preparation station or removes the tube yarn remaining on the tube from the cleaning station. Decide whether to send to. In order to identify the winding yarn, edge filtering is performed on the digital image. German patent application DE 198 60 711 A1 likewise discloses the use of a CCD video camera to create a digital image for identifying the yarn remaining in the tube. That is, an image sensor is used in any publication.

  German patent application DE 102007058857A1 discloses a winding unit for a winder, in which a tube thread containing a relatively small volume of yarn is wound to form a large volume traversing package. . During the winding process of drawing the yarn from the top while forming a so-called yarn balloon from the tube yarn, yarn tension is applied to the yarn which limits the winding speed of the winder by limiting the yarn drawing speed. If effective countermeasures are not taken, this yarn tension may rise to several times the initial yarn tension during one tube run. In order to limit this yarn tension, so-called balloon limiters or withdrawal accelerators are known. This pull-out accelerator has a tubular member whose lower region is formed in a conical shape, and the tube yarn is always positioned in the region of the so-called winding cone of the tube yarn during the winding process. The tubular member is lowered upward. In order to ensure optimal follow-up control of the tubular member, an optical sensor is provided at the conical end of the tubular member for measuring the distance of the tube thread from the winding cone. Accurate lowering of the tubular member above the winding cone is essential for the reliable operation of the drawing accelerator. Therefore, the drawing acceleration device has a sensor for detecting the winding cone of the pipe yarn in each winding unit.

  German patent application DE 42 170 59 A1 describes a conveyor system for transporting pipe yarns traceably to a winding unit. The tube yarn is placed on a conveyor plate with a bar code attached. Thereby, each pipe thread can be identified individually. Thus, information or characteristics can be assigned to each pipe thread by a computer or a control unit. This information can be, for example, the winding degree of the pipe yarn. In this way, the winding speed can be controlled depending on the yarn amount.

  German patent application publication DE 4319173 A1 discloses a conveyor belt with an entraining part for transporting in a shape-connecting manner a conveyor plate with pipe threads or pipes of pipe threads. This entrainment part engages with the recess of the conveyor dish plate. With this conveyor system that moves the yarn at a fixed position on the conveyor belt or conveyor chain, the yarn can be tracked within the equipment. That is, it is possible to track where a specific pipe thread is in the device.

German Patent Application Publication DE3942304A1 European Patent Application Publication EP1961687A2 German Patent Application Publication DE 19836071A1 German Patent Application Publication DE102007058857A1 German patent application DE 4217059A1 German Patent Application Publication DE 4319173A1

  The object of the present invention is to improve the control of the winder.

  The object is solved according to the invention by the method features according to claim 1 and the device configuration according to claim 14. Advantageous embodiments of the invention are described in the dependent claims.

It is a figure which shows the winder of this invention. It is a figure which shows the winding unit of the winding machine of this invention. It is a figure which shows the apparatus of a winder for producing the digital image of a pipe yarn. FIG. 2 shows an apparatus for creating a digital image of a reference tube thread. It is sectional drawing of a pipe thread. It is sectional drawing of the pipe thread which has the thread | yarn length extended partially. It is sectional drawing of the pipe thread which has an error.

  In order to solve the above problems, a method of operating a winder having a large number of winding units and a conveyor system for traceably transferring a spinning bobbin to the winding station is provided. In the method of the present invention, a digital image of a reference pipe thread having a known thread length is created using an image generation sensor such as a CCD sensor or a CMOS sensor, and parameters representing the cross-section of the winding of the reference pipe thread are set. Ask. This yarn length can be ascertained from the preceding spinning process, or this yarn length is determined in order to carry out the method. In order to obtain the length of the yarn wound around the reference tube yarn, the reference tube yarn and the tube of the reference tube yarn can be measured. The yarn length can be obtained from the weight and count of the reference tube yarn. In some cases, the count can be obtained from a predetermined length of thread piece. In the present invention, the ratio between the yarn length of the reference pipe yarn and the parameter representing the cross section of the winding of the reference pipe yarn is also obtained.

  A digital image is generated from another pipe yarn supplied to the conveyor system using an image generation sensor. Advantageously, the same image generating sensor is used to generate a digital image of the reference tube yarn and a digital image of the other tube yarn. However, in principle it is also possible to use different sensors. Furthermore, it is necessary to detect the yarn length drawn from the tube yarn during winding. In the present invention, the digital image information of the tube yarn, the yarn length drawn from the tube yarn, and the ratio of the calculated length of the reference tube yarn and the parameter representing the cross section of the winding of the reference tube yarn Coupling is performed, and the winder is controlled depending on the result of the coupling.

  The method of the present invention not only detects the condition when the pipe yarn enters the conveyor system or is fed to the winder, but can also detect the condition of the pipe yarn throughout the drawing process. By knowing these states, the winder can be optimally controlled. There is no need to provide an additional sensor for each winding unit. Regardless of this, basically, the drawn-out yarn length is determined in a known manner in each winding unit.

  Advantageously, a digital image of the tube reference tube is also created using an image generating sensor.

  The parameter representing the cross section of the winding of the reference tube yarn can be obtained from information on the digital image of the reference tube yarn and information on the digital image of the reference tube. Further, by using the image of the reference tube, it is possible to easily distinguish the wound yarn from the tube.

  In an advantageous embodiment of the method according to the invention, a pixel of the digital image is associated with a winding of a reference tube, and the number of pixels is used as a parameter representing the cross section of the winding. When a digital image of the reference tube yarn is created in front of a high contrast background, the tube yarn pixels can be determined by luminance comparison or gray value comparison. Similarly, an image of the reference tube can be obtained. Advantageously, an image of the reference tube is created under the same conditions. That is, it is created with the same distance and the same resolution. Using this information, it is possible to easily distinguish the pixel of the reference tube yarn from the pixel of the tube yarn. Of course, alternatively, a known edge filter algorithm can be used to calculate the winding yarn, but the amount of calculation required for this calculation is significantly increased.

  In order to perform further processing, the pixels of each digital image can be associated with the wound yarn of the tube yarn supplied to the conveyor system in correspondence with the reference tube yarn. These images are also preferably created under the same conditions.

  From the information of the digital image of the tube yarn and the ratio of the yarn length of the reference tube yarn and the parameter representing the cross-section of the winding of the reference tube yarn, the exact yarn length of each tube yarn supplied to the conveyor system Can be requested. In order to do this, it is only necessary to multiply the number of pixels of the tubular yarn winding by the ratio of the yarn length to the number of pixels of the reference tubular yarn.

  From the information of the digital image of the tube yarn, a parameter representing the diameter of the tube yarn can advantageously be determined, depending on the longitudinal dimension of the tube yarn. This makes it possible to determine the posture and shape of the wound yarn cone of the tube yarn. Further, it is possible to detect a deviation from a normal tube yarn shape caused by an error during spinning.

  In an advantageous embodiment of the method according to the invention, the information of the digital image of the tube yarn, the yarn length drawn from the tube yarn, and the parameters representing the yarn length of the reference tube yarn and the cross-section of the winding of the reference tube yarn From the obtained ratio, the shape of the tube thread that changes during drawing is continuously obtained.

  In order to do this, it is possible to associate the pixel of the digital image with the winding yarn of the tube yarn, and sequentially remove the correspondence between the pixel and the winding yarn according to the winding pattern of the tube yarn during the drawing. it can. At the time of spinning, a yarn layer of the tube yarn is formed along the winding cone, and at the time of drawing, the tube yarn is disassembled accordingly. That is, since the disassembly is performed along the winding cone shape, the correspondence between the pixels and the winding yarn is sequentially removed along the winding cone shape.

  In the method of the present invention, the attitude of the winding cone that constantly changes during drawing can be obtained in this way. It is therefore advantageous to control the withdrawal accelerator in the winding unit in dependence on the changing shape of the tube yarn. In the present invention, this makes it possible to omit the sensor that had to be installed in the drawer acceleration device in the prior art. The control of the drawing acceleration device according to the present invention functions with high reliability even if the tube yarn shape deviates from the normal tube yarn shape due to an error during spinning.

  By knowing the changing shape of the tube yarn, the yarn tensioning device and / or the winding speed can be controlled in the winding unit. As a difference from the prior art, it is possible to easily adapt to conditions that change during withdrawal.

  In another advantageous embodiment, during drawing, the digital image information of the tube yarn, the length of the yarn drawn from the tube yarn, and the cross-section of the tube of the reference tube and the winding of the reference tube are displayed. The remaining yarn length remaining in the pipe yarn is obtained from the obtained ratio with the parameter to be expressed. As a result, the remaining yarn length currently remaining in one batch of pipe yarn can be detected.

  Advantageously, in this way, the end of the batch is controlled depending on the detected remaining yarn length. In other words, at the end of one batch, in order to wind the traverse package into a full tube state, it is possible to determine in which winding unit the remaining tube yarn of the batch is processed.

  The invention further relates to a winder for carrying out the method according to the invention, comprising a large number of winding units and a conveyor system for transporting the spun yarn to the winding units in a traceable manner. An image generation sensor for creating a digital image of the pipe yarn supplied to the conveyor system is arranged at the entrance of the system, and means for detecting the length of the yarn drawn from the pipe yarn during winding Is provided. Further, a control evaluation unit is provided. The control evaluation unit uses a digital image of the reference pipe yarn to obtain a parameter representing a cross section of the winding of the reference pipe yarn, and determines a predetermined value for the reference pipe yarn. Using the yarn length, the ratio between the yarn length of the reference pipe yarn and the parameter representing the cross-section of the winding of the reference pipe yarn is obtained, and the information of the digital image of the pipe yarn, the yarn length drawn from the pipe yarn And combining the obtained ratio of the length of the reference pipe yarn and the parameter representing the cross-section of the winding of the reference pipe yarn, and controlling the winder depending on the result of the connection Has been.

  Advantageously, the reflective background can be arranged to face the imaging sensor so that a digital image of the tube thread can be created in front of the reflective background, and the tube thread digital It is possible to provide the light source arranged so that the light source and the background are on the opposite sides of the tube thread when the image is created. The tube yarn shields the light from the light source from hitting the background, and the light hitting the background is reflected outside the tube yarn region. On the image, non-reflective or at least low-reflective tube threads appear dark and the reflective background appears bright. In this way, high contrast is generated, which allows dark pixels to be associated with tube threads without the use of cumbersome edge filtering. Advantageously, as a reflective background, a reflective film that reflects a large amount in particular is used.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  FIG. 1 shows a winder 1 having a large number of winding units 2, which are arranged between end frames 55, 56 of the winder 1. The winder includes a central control unit 50, and the central control unit 50 is connected to the winding unit controller 40 via the bus system 60. The central control unit 50 has a keyboard 52 and a display 51 for operation and display.

  FIG. 2 is a schematic side view of the winding unit 2 during the winding process. In the winding unit 2, the original package having only a relatively small amount of yarn material is wound to form a large volume traverse package 11. This is done in a known manner and will not be described in detail here. The original package is usually a spun tube 9 manufactured by a ring spinning machine. The completed traverse package 11 is then handed over to the mechanical chief traverse package conveyor device 21 using a maintenance unit 57 that automatically operates and transported to a package transfer station or the like disposed on the device end side. . The maintenance unit 57 is, for example, a twill winding package changing device.

  The winder 1 is further equipped with a logistic device in the form of a package tube conveyor system 3. In this package tube conveyor system 3, spun tube yarns 9 or empty tubes 34 circulated in a direction perpendicular to the conveyor dish plate 8 are circulated. In the figure, only the pipe yarn supply section 4, the reversible drive accumulation section 5, the lateral transport section 6 connected to the winding unit 2, and the pipe return section 7 are shown in the pipe conveyor system 3. ing. These sections have a conveyor belt with a holder device for the conveyor plate 8. This holder device is not shown in the figure. Since the movement of the conveyor belt and the position of the holder device on the conveyor belt are known, it is always possible to identify the position of a particular tube thread in the winder. As can be seen from the figure, the supplied spun yarn 9 is first positioned at the drawing position 10 in the region of the transverse transport section 6 in the winding unit 2 and then wound up.

  For this purpose, each winding unit 2 has various yarn monitoring devices and yarn processing devices. This not only ensures that the spun tube yarn 9 is wound up to form a large volume traverse package 11, but also monitors whether there is a yarn error in the yarn 30 during the winding process, If a yarn error is detected, it is also guaranteed that this will be resolved. Since this is done in a known manner, it is only illustrated schematically. Each winding unit 2 has a winding unit control unit 40, which is connected to the yarn monitoring device and the yarn processing device via a control line shown only briefly and via a bus system 60. The central control unit 50 and the control device 58 of the maintenance unit 57 are connected.

  The work unit 2 includes, for example, a winding device 24 having a winding frame 18. The winding frame 18 is supported so as to be movable about a turning shaft 19, and the winding frame 18 is provided with a package driving device 26 and a yarn traversing device 28.

  In the illustrated embodiment, the surface of the traverse package 11 is placed on the drive roller 26 during the winding process, and the traverse package 11 is interlocked with the drive roller 26 by friction engagement. In this case, a force is applied to the drive roller 26 via a drive device (not shown) that can control the rotation speed and can be reversed. The yarn 30 is traversed when it is placed on the traversing package 11 using a yarn traversing device 28. In this embodiment, the yarn traversing device 28 has a finger-shaped yarn guide 29.

  The winding unit 2 further includes a yarn coupling device, a lower yarn sensor 22, a yarn tension device 14, a yarn cleaner 15 including a yarn cutting device 17, and a waxing device 16. Said yarn joining device is advantageously a yarn twisting device 13 operating pneumatically with a cutting device 43. The winding unit 2 shown in FIG. 2 further has a yarn tension sensor 20.

  Further, the winding unit 2 is further provided with a suction nozzle 12 and a grip tube 25, both of which are configured to apply a negative pressure as prescribed. The suction nozzle 12 and the grip pipe 25 are connected to a negative pressure traverse portion 32 having a mechanical length, and the negative pressure traverse portion 32 is connected to a negative pressure source 33.

  Furthermore, in the embodiment shown in the figure, in the region of the waxing device 16, the yarn catching nozzle 23, which is arranged slightly rearward as viewed in the yarn travel path, causes the yarn 30 to be fed during the winding process. It is positioned so as to run upstream of the merging portion 42 of the 23. The yarn catching nozzle 23 is also connected to the negative pressure traverse portion 32 via the air branch 27. Here, the air branch 27 has a pipe joint 35 for the yarn catching nozzle 23 and a relatively large-capacity escape pipe joint 36, and its junction is located at the standby position P during normal winding operation. The suction nozzle 12 is hermetically sealed. When the relief pipe joint 36 is opened by turning the suction nozzle 12 to the high position, the negative pressure applied to the yarn catching nozzle 23 disappears.

  Further, the winding unit 2 is also provided with a drawing acceleration device 37. This is to reduce the yarn tension by favorably affecting the yarn balloon that is produced when the yarn is pulled from the spun tube yarn 9 during the winding process. The drawing acceleration device 37 is configured to move in the vertical direction R as prescribed so that the drawing acceleration device 37 moves downward after the drawing running of the spun tube yarn 9 through the driving device 38 during the winding process. Yes. At that time, the lower side portion of the drawing acceleration device 37 is always located at substantially the same height as the winding cone 39 of the spun yarn 9 positioned at the drawing position 10.

  The winder 1 further has an image detection device 41 arranged at the entrance of the conveyor system 3. FIG. 3 shows details of the image detection device 41. The tube yarn 9 is positioned between the image generation sensor 42 and the background portion 46 by the conveyor system 3. Further, two infrared diodes 44 and 45 for illuminating the tube yarn 9 are also provided in front of the background portion 46. In other words, the infrared diodes 44 and 45 are also arranged in the region of the image generation sensor 42 so that the tube yarn 9 comes between the infrared diodes 44 and 45 and the background portion 46. An image processing unit 47 is provided for the image generation sensor 42. The image processing unit 47 is connected to the winding unit control unit 40 and the central control unit 50 via the bus system 60 in order to control the winder. The background portion 46 is provided with a reflective film, and this reflective film is for amplifying the reflection of the light transmitted from the infrared diodes 44 and 45. Only the portion of the background 46 that is shielded by the tube yarn 9 remains dark. In this way, a strong contrast between the tube thread and the background portion is realized on the digital image. This makes it easy to grasp the pixels belonging to the tube thread.

  In order to carry out the method of the invention, a digital image of the reference tube yarn is required. This digital image can be created using the image detection device 41 of the winder. However, it is also possible to use a separate image detection device 41A, for example as shown in FIG. 4, to create a digital image of the reference tube thread. In order to be able to compare the digital image of the tube yarn 9 and the digital image of the reference tube yarn 9A without the trouble of further processing the image created as described above, the image detection device 41A is used in the winding machine. The configuration is substantially the same as that of the image detection device 41. Accordingly, the image detection device 41A includes an image generation sensor 42A for creating a digital image ahead of the background portion 46A. Accordingly, infrared diodes 44A and 45A are provided for illumination. An image processing unit 47A can be used to store a digital image of the reference tube thread. The digital image of the reference tube yarn is transferred to the winder for control of the winder. This can be done, for example, using a bus connection or a memory card not shown in the figure. In order to better distinguish both the winding yarn 48 of the tube yarn 9 and the winding yarn 48A of the reference tube yarn 9A from the tube 34 or 34A, a digital image of the reference tube 34A is advantageously created. If a separate image detection device 41A is provided, this device is advantageously used to create a digital image of the reference tube. Of course, instead of this, the image detecting device 41 of the winder 1 can be used alternatively.

  After creating the digital image described above, the pixels of the digital image can be associated with the winding yarn 48A of the reference tube yarn 9A and the winding yarn 48 of the tube yarn 9. All dark pixels belong to tube thread 9 or 9A. The pixels thus selected include the pixels of the respective tubes 34 to 34A in addition to the winding yarn 48 or the winding yarn 48A. By comparing the digital image of the reference tube 34A with the digital image of the tube 9 or the reference tube 9, the corresponding pixels in the image of the tube 34 or 34A can be identified. The dark pixels remaining in this way can be associated with the winding yarns 48 and 48A. The dark pixels remaining in this way can be associated with the winding yarns 48 and 48A. The distribution of each cross section of the wound yarn 48 and the tube 34 can be seen from FIG.

  In order to carry out the method of the invention, it is further necessary that the exact yarn length wound around the reference head is known. In order to do this, the reference tube thread 9A can be weighed, and the pipe 34A of the reference tube thread 9A can be weighed after the reference tube thread 9A is pulled out. In this way, the yarn length can be calculated using the yarn count. If necessary, the count can be obtained from a short reference yarn piece having a predetermined length.

  It is not necessary to provide a special device in the winding unit 2 in order to obtain the yarn length drawn from the tube yarn 9 in the winding unit 2. The drawn yarn length can be obtained, for example, by integrating the number of rotations of the winding drive device 26.

  From the digital image of the tube yarn 9, the transition of the diameter of the tube yarn 9 in the longitudinal direction can be obtained. Thereby, it is possible to identify both the posture and shape of the winding cone 39 of the pipe yarn 9 and the error in forming the pipe yarn.

  The information described above can advantageously be used as a basis for a number of different control processes.

  The digital image of the tube yarn 9 can be used to control the drawing acceleration device 37. The number of pixels of the winding yarn 48A of the reference tube yarn 9A is a scale representing the cross-sectional area of the winding yarn 48A. From the known yarn length of the reference tube yarn 9A, the ratio between the yarn length and the cross-sectional area can be obtained. With this ratio, the changing cross-sectional area of the wound yarn 48 can be obtained in combination with the yarn length drawn from the tube yarn 9, and as a result, the shape of the wound yarn can be obtained continuously and accurately. FIG. 6 shows the tube yarn 9 of FIG. 5 after a predetermined length of yarn has been pulled out of the tube yarn 9. The drawn yarn length corresponds to an area 49 using the above ratio. In this way, the remaining yarn winding 48B remains. Based on the winding principle of the tube yarn 9, the cross-sectional area or the wound yarn 48 is always disassembled along the winding cone 39. This makes it possible to easily identify the surface or pixel that is no longer associated with the wound yarn.

  FIG. 7 shows the tube yarn 9C having an error that the winding yarn 48C has a narrowed shape. Such a tube yarn 9C is also referred to as a “Coca-Cola” tube yarn. Even with such a tube thread, the specific shape of the tube thread can always be determined by the above-described method throughout the entire drawing process.

  In this way, the lower side portion of the drawing acceleration device 37 is always at a height substantially equal to the height of the winding cone 39 of the spun yarn 9 positioned at the drawing position 10 without adding a sensor. The drawer acceleration device 37 can be controlled or lowered.

  As is well known, even if the drawing acceleration device 37 is properly lowered, the yarn tension or yarn tension increases as the amount of yarn wound around the tube yarn decreases. Therefore, the yarn tension is adaptively adjusted by the yarn tensioning device 14 and, in some cases, by changing the winding speed. In the prior art, it has been known that the yarn tension or the yarn tension is obtained by using the yarn tension sensor 20 in each winding unit in order to guarantee the optimum adjustment. In the present invention, the yarn tension sensor 20 is not arranged in each winding unit, depending on the position of the winding cone 39 of the tube yarn 9 or, more generally, the shape of the tube yarn 9 that changes. Depending on the thread tensioning device 14 and / or the winding speed can be adjusted. However, it is advantageous to provide each winding unit 2 with a yarn tension sensor 20 to determine the reference curve.

  In the winder 1, the tube yarn 9 is processed using various yarns and partially using a plurality of different tubes 34. In this case, there will be multiple different batches. Multiple different batches can be processed simultaneously or sequentially. This is because much more yarn is wound around the twill winding package 11 than the tube yarn 9. Therefore, at the time of batch exchange or at the end of the batch, there arises a problem that the pipe yarn 9 is divided into a plurality of winding units 2 so that the traverse package 11 can be completely wound. In order to solve this problem, the yarn length wound around the tube yarn 9 is obtained based on the digital image of the tube yarn 9 and the cross-sectional area-yarn length ratio obtained from the digital image of the reference tube yarn 9A. . During drawing, the yarn length drawn from the tube yarn 9 is detected, and the remaining yarn length remaining in the tube yarn 9 is always obtained. With this information, it is always possible to determine the total yarn length of all the tube yarns 9 present in the system in one batch. At the end of the batch, based on the known yarn length of the fully wound winding package and the yarn length already wound on the current winding package, so that the winding package can be full, You can decide in which package to process this batch that you are about to terminate.

  By creating a digital image of the tube yarn 9 supplied to the conveyor system 3, the batches can also be distinguished. That is, a plurality of different pipe yarns can be associated with different batches. Furthermore, it is possible to monitor the previous spinning process by the image and determine its quality. For example, it is possible to record the frequent occurrence of a tube thread having an error.

DESCRIPTION OF SYMBOLS 1 Winding machine 2 Winding unit 3 Conveyor system 4 Pipe thread supply area 6 Lateral transport section 7 Pipe return section 9 Pipe thread 10 Pull-out position 11 Twill winding package 37 Pull-out acceleration device 40 Winding unit controller 41 Image detection device 42, 42A Image generation sensor 47, 47A Image processing unit 46, 46A Background portion 44, 45, 44A, 45A Infrared diode 50 Central control unit

Claims (16)

A method of operating a winder (1) comprising a plurality of winding units (2) and a conveyor system (3) for transporting the pipe yarn (9) to the winding unit (2) in a traceable manner,
Creating a digital image of the reference tube yarn (9A) having a known yarn length using the image generation sensor (42, 42A);
Obtaining a parameter representing a cross section of the wound yarn (48A) of the reference pipe yarn (9A);
Obtaining a ratio between a yarn length of the reference pipe yarn (9A) and a parameter representing a cross section of the wound yarn (48A) of the reference pipe yarn (9A);
Creating a digital image of the tube yarn (9) supplied to the conveyor system (3) using an image generation sensor (42);
Detecting the yarn length drawn out from the tube yarn (9) during winding;
Information on the digital image of the tube yarn (9), the yarn length drawn from the tube yarn (9), the yarn length of the reference tube yarn (9A) and the wound yarn (48A of the reference tube yarn (9A)) ) Combining the determined ratio with a parameter representing the cross-section of
And controlling the winder (1) depending on the result of the coupling. Creating a digital image of the reference tube (34, 34A) of the tube thread (9, 9A) using the image generation sensor (42, 42A);
The operation method according to claim 1. From the digital image information of the reference tube yarn (9A) and the digital image information of the reference tube (34, 34A), a parameter representing the cross section of the wound yarn (48A) of the reference tube yarn (9A) is obtained. ,
The operation method according to claim 2. Associating pixels of the digital image with the winding yarn (48A) of the reference tube yarn (9A), and using the number of pixels as a parameter representing a cross section of the winding yarn (48A),
The operation method according to any one of claims 1 to 3. Associating pixels of the digital image with the wound yarn (48) of the tube yarn (9) supplied to the conveyor system (3);
The operation method according to any one of claims 1 to 4. From the digital image information of the tube yarn (9) and the ratio obtained from the yarn length of the reference tube yarn (9A) and the parameter representing the cross section of the wound yarn (48A) of the reference tube yarn (9A). The thread length of the pipe thread (9) supplied to the conveyor system (3) is obtained.
The operation method according to any one of claims 1 to 5. From the digital image information of the tube yarn (9), depending on the longitudinal dimension of the tube yarn (9), a parameter representing the diameter of the tube yarn (9) is obtained.
The operation method according to any one of claims 1 to 6. Digital image information of the tube yarn (9), the yarn length drawn from the tube yarn, and the cross section of the yarn length of the reference tube yarn (9A) and the wound yarn (48A) of the reference tube yarn (9A) From the ratio obtained with the parameter representing, the shape of the pipe yarn (9) to be changed is obtained,
The operation method according to claim 1. Associating pixels of the digital image with the wound yarn (48) of the tube yarn (9);
In accordance with the winding pattern of the tube thread (9) during drawing, the correspondence of the pixels to the winding thread (48) is sequentially removed.
The operation method according to claim 8. In the winding unit (1), the drawing acceleration device (37) is controlled depending on the changing shape of the pipe yarn (9).
The operation method according to claim 8 or 9. Controlling the yarn tensioning device (14) and / or the winding speed in the winding unit (2) depending on the changing shape of the tube yarn,
The operation method according to any one of claims 8 to 10. Digital image information of the tube yarn (9), the yarn length drawn from the tube yarn (9), the yarn length of the reference tube yarn (9A) and the wound yarn (48A of the reference tube yarn (9A)) ) To determine the remaining yarn length of the pipe yarn (9) from the ratio to the parameter representing the cross section of
The operation method according to any one of claims 1 to 11. Detect the current remaining yarn length of one batch of pipe yarn (9),
The operation method according to claim 12. Controlling the end of the batch depending on the detected remaining yarn length,
The operation method according to claim 13. A winder (1) for carrying out the operating method according to any one of claims 1 to 14,
A plurality of winding units (2) and a conveyor system (3) for transporting the pipe yarn (9) to the winding unit (2) in a traceable manner;
An image generation sensor (42) for creating a digital image of the pipe yarn (9) supplied to the conveyor system (3) is disposed at the entrance of the conveyor system (3),
Means for detecting the yarn length drawn during winding from the pipe yarn (9), and control evaluation means (40, 47, 50) are provided;
The control evaluation means (40, 47, 50)
Using the digital image of the reference tube yarn (9A), a parameter representing the cross section of the wound yarn (48A) of the reference tube yarn (9A) is obtained,
Using a predetermined yarn length of the reference tube yarn (9A), a yarn length of the reference tube yarn (9A) and a parameter representing a cross section of the wound yarn (48A) of the reference tube yarn (9A) Find the ratio,
Information of digital image of tube yarn (9), yarn length drawn from tube tube (9), yarn length of reference tube yarn (9A) and wound yarn (48A) of reference tube yarn (9A) Combining the obtained ratio with the parameter representing the cross section of
Winder (1), characterized in that it is configured to control the winder (1) depending on the result of the coupling. The reflective background (46) faces the image generation sensor (42) so that a digital image of the tube yarn (9) can be created in front of the reflective background (46). Are located in
The light source (44, 45) is arranged so that the light source (44, 45) and the background part (46) are located on the opposite sides of the tube thread when creating the digital image of the tube thread (9). Being
The winder according to claim 15.

Images