JP2005106498A - Method of removing defect - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance a yield when removing a defect, and to efficiently remove the defect. <P>SOLUTION: When removing the defect, a full-width elimination is carried out at first while detecting spaces in a prescribed number of labels imparted onto a web (steps 250-264). A pattern of the spaces in the prescribed number of labels is collated thereafter with a pattern of spaces in the labels obtained from trouble information, and the full-width elimination or slit elimination is carried out (steps 270, 282), based on the label on the web, the trouble information and elimination setting, when conforming a trouble position of the trouble information with a position of a position (trouble) of the label on the web (steps 266, 268). A troubled recording paper-sheet is eliminated efficiently and exactly by such a manner. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a defect removal method for removing a defective portion of a web. Specifically, when producing a sheet body or a book on which the sheet body is accumulated by cutting the web, a defect for preventing the production of a sheet body or book including a defective portion generated on the web. It relates to a removal method.

  For example, various information recording sheet bodies, such as inkjet paper, produce raw materials through various processes such as a coating process, a vapor deposition process, a printing process, and a laminating process. After that, the sheet body is produced by cutting (slit) with a predetermined width while drawing the web from the original fabric, and then cutting to a predetermined length.

  The sheet bodies produced in this way are collected and packaged by a predetermined number of sheets, and further shipped after being packed.

  By the way, in a web for producing a sheet body, defects such as coating defects may occur during a production process such as a coating process, and this defect reduces the quality of the sheet body produced by processing the web. End up. For this reason, it is necessary to discard the sheet body in which the defect has occurred and to prevent the product quality of the sheet body from being deteriorated.

  From here, by inputting the defect data indicating the defect position of the web, the defect removal apparatus which makes it possible to smoothly and accurately remove the defective part of the web by stopping the defect start position at the defect removal position. (For example, refer to Patent Document 1).

  On the other hand, as a method of removing defects (failures) on the web, a color mark sensor is used to detect a label affixed to the web in advance so as to indicate the position of the defect, and the conveyance amount after the label is detected. By tracking by counting with an encoder or the like, the sheet body is discarded along the width direction of the web by operating the disposal apparatus when the defective sheet body reaches the disposal apparatus. Has become commonplace.

  However, the web has a defect that continuously (stripes) along the longitudinal direction at a predetermined position in the width direction, and if the full width is discarded for such a defect, the sheet does not include a defective portion. There is a problem that the disposal loss of the sheet body is increased because the body is discarded.

  From this point, it is preferable to eliminate the stripe-shaped defects in units of slits instead of the full width in terms of reducing the loss of the sheet body and improving the yield.

  However, the label provided on the web clarifies the defect position along the longitudinal direction of the web, but the defect position along the width direction of the web is not clear. For this reason, it is difficult to remove the sheet in units of slits using only the label provided on the web.

  On the other hand, a method of specifying a sampling method for each defect using electronic data is conceivable. By using this method, not only full width discard but also slit unit discard becomes possible.

However, the end of the longitudinal direction of the web may be extracted by sampling or the like prior to processing into the sheet body. For this reason, it is difficult to specify the defect position on the web from the electronic data with high accuracy. In order to surely remove the defective portion, it is necessary to remove the sheet body in a wide range including the defect position, and it is difficult to substantially improve the yield.
JP-A-9-29695

  SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and a defect removal method for properly discarding defective portions without deteriorating productivity when producing a sheet of a predetermined size by cutting or cutting a web. The purpose is to propose.

  In order to achieve the above object, the present invention includes a roll production process for winding a web into a roll, and a processing process for producing a sheet body of a predetermined size by cutting or cutting while pulling out the web from the roll. A defect removal method for removing a defect in a production system for a sheet body including: detecting the position of the defect along the longitudinal direction of the web together with the presence or absence of a defect on the web in the production process. A defect detection step, a marking step for assigning an index according to a position along the web longitudinal direction of the defect detected in the defect detection step, and a web longitudinal position of each defect based on the detection result of the defect detection step And a data generation step for generating defect information including: the index given to the web in the processing step And an index detecting step for detecting an interval along the longitudinal direction of each index, and a predetermined number of the index intervals and the defect information are collated to identify the position of the index detected in the index detecting step on the web A collating step; and a discarding step of removing a fault identified by the collating step from the web based on the detection result of the index detecting step or the defect information.

  According to the present invention, in the sheet body production system, a sheet body of a predetermined size is produced by pulling out the web wound in a roll shape and performing a cutting or cutting process.

  In the defect detection step, defects on the surface of the web wound up in a roll shape are detected. In the marking step, according to the detected defect position, for example, an index is given to the end of the web in the width direction. In the data generation step, defect information including at least a position along the web longitudinal direction is generated for each defect detected in the defect detection step.

  Thereby, defect information is obtained together with the web roll to which the index is given according to the defect position.

  When the sheet body is formed by cutting or cutting the roll, an index applied to the web is detected in the index detection step according to the defect position. At this time, in the collation step, the position of the index detected in the index detection step is specified from the interval between the predetermined number of indexes on the web and the interval between the predetermined number of defects obtained from the defect information.

  Defects on the web occur irregularly along the length direction of the web, and the position of the corresponding defect on the web in the longitudinal direction can be specified from the interval between a predetermined number of defects. Thus, the defect position on the web can be accurately grasped based on the index and defect information given to the web.

  In this way, by accurately grasping the position of each defect on the web, it is possible to accurately discard the sheet body in which the corresponding defect has occurred. At this time, since the position of the defect on the web can be accurately identified according to the index and the defect information, the margin can be reduced when the corresponding area is discarded, so the yield of the sheet body can be reduced. Can be improved.

  That is, when obtaining a sheet body in which no defect has occurred, if the position of the defect on the web cannot be specified with high accuracy, it is necessary to discard the sheet body or the web in a wide range with a margin.

  On the other hand, since the defect position on the web can be specified with high accuracy, it is possible to accurately dispose of only the corresponding area, so that it is possible to suppress the discarding of the sheet body in which no defect has occurred. Can do.

  The present invention also provides a roll production process for winding the web into a roll, a cutting process for cutting the web from the roll with a predetermined width, and the web cut with a predetermined width in the cutting process. A cutting process for producing a sheet body by cutting into lengths, and an accumulating process for producing a book in which the sheet bodies are accumulated for each web cut in the cutting process to accumulate a predetermined number of sheet bodies. A defect removal method for removing defects in a production system of a sheet body, wherein in the production process, a defect detection step of detecting the position of the defect along the longitudinal direction of the web together with the presence or absence of defects on the web, and Based on the marking step for giving an index according to the position of the defect detected in the defect detection step along the longitudinal direction of the web, and the detection result of the defect detection step A data generation step for generating defect information including a web longitudinal position and a width direction position of each defect, and the index given to the web on the sheet body that is cut in the cutting step and fed out integrally And an index detection step for detecting an interval along the longitudinal direction of each index, and a predetermined number of the index intervals and the defect information are collated to identify the position of the index detected in the index detection step on the web A collating step; and a discarding step of removing a fault identified by the collating step from the web based on the detection result of the index detecting step or the defect information.

  In the production system to which the present invention having the above configuration is applied, a web roll is produced, and after the roll is pulled out, the cutting process (slit process) is performed in the cutting process, and then the cutting process is performed in the cutting process. Thus, a plurality of the sheet bodies are produced along the web width direction. The sheet body is later integrally fed to the stacking process along the width direction of the web, and a predetermined number of sheets are stacked for each slit in the stacking process to form a book.

  At this time, according to the present invention, when a defect on the web is detected in the defect detection step, a position along the web width direction is detected along with the position along the web longitudinal direction of each defect. Defect information including the position in the web longitudinal direction and the position in the web width direction of the defect is generated.

  In the collation step, the defect identified by the index detected in the index detection step from the predetermined number of defect intervals along the web longitudinal direction detected in the index detection step and the same number of defect intervals based on the defect information, Check against defect information.

  Thereby, in a removal step, the sheet | seat body of a defective part can be discarded exactly.

  Further, the present invention provides the full width discarding means for discarding the sheet body integrally conveyed along the width direction of the web from the cutting process to the stacking process in the discarding step, and the stacking process. Slit disposing means for disposing of the accumulated books.

  According to the present invention, for the disposal of the sheet body, the full width discarding means for discarding the sheet body along the width direction of the web and the slit discarding means for discarding the sheet body along the longitudinal direction of the web. Provided.

  Defects generated in the web include a web dot and a streak along the longitudinal direction of the web. When discarding streak-like defects, if the sheet body along the width direction of the web is discarded, the amount of sheet body that does not have defects increases, so the length of the web is determined from the defect information. In the part where defects continue along the direction, the slit is discarded.

  At this time, since the position along the web width direction of the defect can be accurately identified from the defect information, it is possible to suppress the unnecessary elimination of the sheet body in which the defect has not occurred and improve the yield. Can do.

  In such this invention, what is necessary is just to include the setting step which sets whether the sheet body is discarded by the full width discarding means or the slit discarding means based on the defect information. .

  Further, in the present invention, in the setting step, a defect position image having individual defects as pixels is formed based on the defect information generated in the data generation step, and full width discarding or slit scraping is performed based on the defect position image. Rejection can be set.

  Further, the present invention is characterized in that, in the setting step, discarding of the sheet body by the full width discarding unit is set while the index detection unit detects the predetermined number of indexes.

  According to this invention, when the web is pulled out from the roll and detected, and the index applied to the web is detected, the web is first discarded while the full width is discarded according to the index applied to the web. After the index and the defect information are collated and after the index and the defect information are collated, the entire width or slit is discarded based on the index and the defect information.

  Thereby, accurate defect removal becomes possible.

  Further, according to the present invention, prior to the web cutting process, the setting unit assigns a processing setting index based on a setting result to the web according to the defect position, and indicates the defect position in the index detection step. The processing setting index may be read together with the index.

  Further, in the present invention, when slit disposition is indicated by the processing setting index, a defect position along the web width direction is indicated on the processing setting index, and the web width direction indicated on the processing setting index is indicated by the index detecting step. By reading the position of the defect along the line, it is sufficient if the book at the corresponding position is discarded by the slit discarding means.

  As described above, according to the present invention, an index is given according to the defect position on the web, and defect information that makes the defect position clear is generated. When a defect is removed from the web, each defect in the defect information is compared with a defect position on the web based on the index interval and defect information given to the web.

  Thereby, since the defect of a web can be removed exactly, the outstanding effect that a yield can be aimed at is acquired.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a schematic configuration of a production system 10 applied to the present embodiment. In this embodiment, the production system 10 that produces inkjet paper will be described as an example. However, the present invention is not limited to this, and photographic photosensitive materials (photosensitive materials) such as photographic paper and photographic film, and various recording papers. Can be applied to production.

  The production system 10 includes a paper making / laminating step 12 and a coating step 14. In the production system 10, a wide inkjet recording paper 16 (hereinafter referred to as “recording paper 16”) is formed by the paper making / laminating step 12 and the coating step 14. The web 20 is rolled into a roll to produce a raw fabric 20.

  Further, the production system 10 includes a cutting process 22, a cutting process 24, and a stacking process 26 which are continuously arranged, and further includes a packaging process 28 on the downstream side of the stacking process 26. 22 is loaded.

  In the cutting step 22, the web 18 is transported while being pulled out from the original fabric 20, and the web 18 is cut into a predetermined width to form a plurality of narrow webs 18 </ b> A. At this time, in the cutting step 22, the width of the web 18A is cut so as to be the width of the recording paper 16 to be produced.

  Further, in the cutting step 24, multi-row simultaneous cutting is performed on the plurality of webs 18A fed from the cutting step 22. At this time, in the cutting step 24, the web 18A is cut according to the length of the recording paper 16 to be produced. As a result, a sheet-like recording paper 16 having a predetermined size is produced.

  The stacking process 26 sequentially stacks the recording sheets 16 delivered from the cutting process 24 and forms a book 30 in which a predetermined number of recording sheets 16 are bundled. By transporting the booklet 30 to the packaging process 28, the booklet 30 is sealed in a packaging bag or the like in the packaging process 28, and a package 32 is formed.

  The packaging body 32 of the recording paper 16 produced in this way is shipped in a predetermined number of boxes in a cardboard box or the like. The production system 10 for the recording paper 16 can apply a conventionally known configuration, and detailed description thereof is omitted in the present embodiment.

  Incidentally, the production system 10 is provided with a defect removal system 40. The defect removal system 40 detects a scratch or the like generated on the web 18 in the paper making / laminating process 12 or the coating process 14 and removes the corresponding part, thereby preventing the recording paper 16 having no defect such as a scratch. Only the product can be shipped.

  The defect removal system 40 includes a defect inspection device 42, defect removal devices 44 and 46, and a controller 48. The defect inspection device 42 is provided in the coating process 14 as a surface inspection device for the web 18. The surface inspection is performed over the entire surface of the web 18 to inspect whether there is a coating abnormality, and the web 18 for coating abnormality or the like. Detect surface faults (defects).

  The defect removing apparatuses 44 and 46 are provided with the stacking process 26 interposed therebetween. The defect removing apparatus 44 removes the recording paper 16 before being stacked in the stacking process 26, and the defect removing apparatus 46 is stacked in the stacking process. 26 is removed in units of 30 books collected.

  FIG. 2 shows an example of the defect inspection apparatus 42. An inspection roll 50 is disposed downstream of the coating process 14, and the web 18 that has been subjected to the coating process is wound around the inspection roll 50, conveyed, and wound up into a roll shape, whereby the origin 20 is set. Produced. In the present embodiment, the defect inspection apparatus 42 is provided downstream of the coating process 14 to detect defects on the web 18. However, a defect inspection process is provided separately from the coating process 14. May be.

  The defect inspection apparatus 42 includes a defect detector 52 that faces the inspection roll 50. The defect detector 52 is formed by a laser irradiation unit 54 that emits laser light toward the web 18 wound around the inspection roll 50 and a laser light receiving unit 56 that receives the laser light reflected by the web 18.

  The laser irradiation unit 54 deflects the beam-shaped laser light emitted by the laser oscillator 58 with a polygon mirror 62 that rotates at high speed by the scanning motor 60, thereby causing the width direction of the web 18 that is the axial direction of the inspection roll 50 ( The entire surface of the web 18 is irradiated while scanning in the direction orthogonal to the transport direction.

  The laser receiving unit 56 receives the laser light reflected by the web 18. At this time, since the laser light is reflected according to the surface state (planar shape) of the web 18, the amount of light received by the laser light receiving unit 56 changes according to the surface state of the web 18.

  The defect detection device 42 determines a defect (hereinafter referred to as “failure”) such as a scratch or a foreign matter on the surface of the web 18 from the amount of received laser light received by the laser light receiving unit 56. At this time, for example, when the amount of light received by the laser light receiving unit 56 is less than a preset threshold value, it is determined that a failure has occurred at the irradiation position of the corresponding laser light. Further, when the laser light receiving unit 56 condenses the scattered component of the laser light irradiated on the web 18 by the photomultiplier tube and the amount of received light exceeds a preset threshold value, the laser light receiving unit 56 is placed in the corresponding position. It may be determined that a failure (surface abnormality) has occurred.

  The defect detection device 42 includes a detection control unit 64. The detection control unit 64 is connected to a laser light receiving unit 56, a laser oscillator 58, and a deflection motor 60 that rotationally drives the polygon mirror 62. The detection control unit 64 includes the intensity of the laser beam, the scanning speed, and the scanning width. The amount of light received by the laser light receiving unit 56 is detected while performing the above control.

  Thereby, in the defect detection apparatus 42, when the failure of the web 18 is detected from the amount of received laser light received by the laser light receiving unit 56, the position along the web width direction of the defect is determined from the deflection angle of the laser light. Judgment is possible.

  The inspection roll 50 is provided with a rotary encoder 66. The inspection roll 50 rotates according to the conveyance amount of the web 18, and the rotary encoder 66 has a rotating shaft 66 </ b> A that rotates integrally with the inspection roll 50 and a pulse corresponding to the rotation angle of the inspection roll 50. Is output.

  The rotary encoder 66 is connected to the detection control unit 64. When the detection control unit 64 counts the pulses output from the rotary encoder 66 and detects a failure of the web 18, the defective web 18 is detected. The position along the longitudinal direction is determined.

  That is, in the detection control unit 64, the defect detector 52 and the rotary encoder 66 detect the failure (surface failure) of the web 18, and the position of the detected failure along the web width direction and the position along the web longitudinal direction. Can be specified. The rotary encoder 66 is not provided on the inspection roll 50, but is wound around the inspection roll 50, for example, provided on a pass roll that rotates according to the conveyance of the web 18 on the upstream side or the downstream side of the inspection roll 50. If the conveyance amount of the web 18 to be measured can be accurately measured, it can be provided at an arbitrary position.

  On the other hand, the defect detection device 42 is provided with a marker 68, and this marker 68 is connected to the detection control unit 64. When detecting a failure on the web 18, the detection control unit 64 outputs a defect detection signal to the marker 68. Based on the defect detection signal, the marker 68 affixes a label 70 as an index (identification mark) indicating the failure position on the web 18 at the end in the width direction of the web 18.

  The position where the label 70 is attached along the longitudinal direction of the web 18 by the marker 68 is a preset position with respect to the position where the failure is detected on the web 18, and the longitudinal direction of the web 18 is determined from the position of the label 70. The location of the failure along the direction can be specified.

  The label 70 has a thickness of about 100 μm. Accordingly, when the web 18 is wound into a roll to form the original fabric 20, the label 70 overlaps with the width of the original fabric 20. One end side in the direction swells to prevent defects such as winding misalignment.

  Further, in the production system 10, one end side in the width direction of the web 18 is detected by a web edge detection device (not shown), and control is performed so that the end portion in the width direction passes through a certain position (web edge control). The label 70 is attached to the end opposite to the end in the width direction of the web 18 serving as a reference at this time.

  As a result, as shown in FIG. 3, a label 70 is affixed to one end side in the width direction of the web 18 wound as the original fabric 20 according to the failure position.

  Faults occurring in the web 18 include a fault that continues in a straight line along the longitudinal direction at the same position in the width direction of the web 18 (hereinafter referred to as “streaks fault 72”), and randomly throughout the width direction of the web 18. It can be roughly divided into point-like faults that occur (hereinafter referred to as “point faults 74”).

  The marker 68 attaches a label 70 each time a failure is detected by the defect detector 52. For this reason, the labels 70 are affixed to the streak failure 72 at intervals corresponding to the conveyance speed of the web 18. In addition, an error occurs in the label 70 attachment position due to variations in time from failure detection to label 70 application.

  For example, when the conveyance speed v of the web 18 is 60 m / min, the detected failure position when the time variation te from the detection of the failure to the label 70 is 0.2 sec (± 0.1 sec). On the other hand, the range of the attaching position of the label 70 is 200 mm (± 100 mm).

  From this point, when the failure is continuously detected in the marker 68, the label 70 is applied at a pitch of 200 mm, so that the label 70 is applied to the web 18 at a minimum pitch of 200 mm. In addition, it is possible to determine whether or not there is a streak failure 72 continuous in the longitudinal direction of the web 18 from the interval of the label 70.

  The defect detection device 42 is not only a defect detector 52 using laser light, but also a color streak detector, a scratch detector, a gloss that detects a color streak defect on the surface of the web 18 by a charge coupled device (CCD). A detector and a color detector may be included, and not only one surface (front surface) of the web 18 but also front and back surface defect detection may be performed.

  As shown in FIG. 1, the defect detection device 42 is connected to a controller 48, and the position along the web width direction and the web conveyance direction (longitudinal direction) of each failure detected by the defect detection device 42. Is input to the controller 48 as failure information for the web 18.

  In the production / production system 10, the original fabric 20 produced in the coating process 14 is temporarily stored, cut and cut at a predetermined timing, and a recording paper 16 having a predetermined size is produced.

  From here, the defect detection device 42 stores the failure information for each original fabric 20 as electronic data in a storage medium (not shown), and is stored together with the original fabric 20 when the original fabric 20 is cut and cut. Alternatively, it may be read into the controller 48 from a storage medium.

  As the recording medium, any conventionally known recording medium can be used as long as failure information as electronic data can be recorded and stored. Further, a hard disk drive (HDD) may be provided in the controller 48 as a recording medium, and failure information may be recorded on the HDD together with, for example, the lot number of the original fabric 20.

  The controller 48 creates a failure map for each web 18 (original fabric 20) based on the input failure information. In addition, the controller 48 is provided with an input / output unit 76 using a display device such as a CRT or a liquid crystal monitor and an input device such as a keyboard or a pointing device, so that a failure map can be displayed on the display device. ing.

  The controller 48 is connected to defect removing devices 44 and 46. The defect removing device 46 is provided for discarding the recording paper 16 along the width direction of the web 18 (full width discarding). The defect removing device 46 is a book in which a predetermined number of recording papers 16 are stacked for each slit. It is provided for discarding the recording paper 16 every 30 (slit discarding).

  Based on this failure map, the controller 48 sets whether to perform full width disposal using the defect removal device 44 or slit disposal using the defect removal device 46.

  For the setting of the disposal method, a configuration in which the failure map is displayed on the display device of the input / output unit 76 and the operator inputs the disposal method using the input device while viewing the failure map can be applied. At this time, a defect classification system for automatically classifying each fault as a streak fault 72 or a point fault 74 is used, and a recommended disposal method is displayed on the display device based on the classification result. Also good.

  The setting of the disposal method may be automatically performed by the controller 48 based on the result of classification using the defect classification system.

  On the other hand, in the defect removal system 40 applied to the present embodiment, the recording paper 16 is discarded within a range of ± 100 mm including the position indicated by the label 70 with respect to the label 70 to which the web 18 is attached. . That is, the web 18 conveyance speed v at the time of surface inspection (failure detection) is v = 200 m / min, and the variation time te is ± 0.1 sec. Therefore, the range of ± 100 mm is discarded with respect to the label 70 position. By doing so, the defective recording paper 16 can be reliably removed.

  When the disposal method is set, the controller 48 performs the defect removal apparatuses 44 and 46 based on the disposal method set while tracking the label 70 when performing the stacking process from cutting to the corresponding original fabric 20 (web 18). Is activated.

  As shown in FIG. 1, the production system 10 is provided with a marker 78 in the cutting step 22, and this marker 78 is connected to the controller 48.

  The marker 78 is attached with a label 80 (see FIG. 3) as a processing setting index for identifying a failure portion removed (discarded) by the defect removal device 44 and a failure portion removed by the defect removal device 46. In the present embodiment, as an example, a label 80 is affixed so as to instruct removal by the defect removing device 46 for streak faults 72 that are fewer than point faults 74 as faults on web 18. This label 80 is attached after the label 70 for the head position of the streak failure 72.

  The label 80 uses a different color from the recording paper 16 and the label 70 so that the difference from the label 70 becomes clear. In the present embodiment, as an example, the label 70 is red and the label 80 is blue. Such detection and identification of the labels 70 and 80 can be performed by using a sensor capable of detecting a color difference.

  In addition, the label 80 records width position information on the web 18 of the corresponding streak fault 72. The width position information may be a distance from the reference position with respect to one end portion of the web 18, and a slit number or the like indicating a slit roll when the web 18 is slit into a small-width web 18A. Can be used.

  In addition, the recording method of information (width position) on the label 80 can use an arbitrary configuration such as a one-dimensional or two-dimensional barcode. At this time, the information recorded on the label 80 is converted into an OCR function. It can be read using the sensor provided.

  On the other hand, FIG. 4 shows a schematic configuration of the defect removing apparatuses 44 and 46 used in the production system 10.

  As shown in FIG. 1, in the cutting step 24, the sheet-like recording paper 16 having a predetermined size is produced by integrally cutting the webs 18 </ b> A fed in multiple rows.

  As shown in FIG. 4, the accumulating step 26 is provided with an accumulating device 82. The accumulating device 82 accumulates a predetermined number of recording papers 16 fed in multiple rows for each slit, and collects a book 30. Form. Further, the stacking device 82 is configured to send out the booklets 30 one by one. Note that an arbitrary configuration can be applied to the integrated device 82, and detailed description thereof is omitted in the present embodiment.

  Conveyors 84 and 86 are provided between the cutting step 24 and the stacking device 82. The conveying conveyors 84 and 86 integrally hold the recording paper 16 delivered in multiple rows from the cutting step 24 between the upper conveyors 84A and 86A and the lower conveyors 84B and 86B to the stacking device 82. Transport.

  In the stacking process 26, a gate conveyor 88 that forms the defect removing device 44 is provided between the conveyors 84 and 86. The gate conveyor 88 includes an upper conveyor 88A and an oscillating conveyor 90 disposed below the conveyor 88A.

  The gate conveyor 88 conveys the recording paper 16 between the conveyor 88A and the swinging conveyor 90. Further, the swinging conveyor 90 is swingable about a roller 90A on the transport conveyor 84 side so as to be inclined at a predetermined angle with the downstream side being downward (shown by a two-dot chain line in FIG. 4).

  In a state where the swinging conveyor 90 swings in the direction away from the conveyor 88 </ b> A (downward), the recording paper 16 fed from the transport conveyor 84 to the gate conveyor 88 is integrally guided downward by the swinging conveyor 90.

  An accumulation box 92 for accumulating the recording paper 16 to be discarded is provided below the gate conveyor 88 and the transfer conveyor 86, and the swinging conveyor 90 swings downward, so that the swinging conveyor 90 The recording paper 16 conveyed by the above is fed into the collecting box 92 and integrated.

  As a result, the defect removing device 44 can discard the recording paper 16 over the entire width of the web 18.

  A mark sensor 94 is provided on the transfer conveyor 84 disposed on the upstream side of the gate conveyor 88. The mark sensor 94 is opposed to the end of the web 18 in the width direction, and detects the labels 70 and 80.

  The mark sensor 94 can detect whether the label 70 is the red label 70 or the blue label 80 from the difference in color as well as the presence or absence of the labels 70 and 80. Further, the mark sensor 94 has an OCR function, and when the label 80 is detected, the defect position information recorded on the label 80 can be read.

  The conveyor 84 is provided with an encoder (rotary encoder) 102 for detecting the rotation angle of a roller 84C provided on the lower conveyor 84B, for example. By using this encoder 102, labels 70, 80 are provided. It is possible to measure the transport amount of the recording paper 16 after detecting the above.

  The controller 48 controls the swing of the swing conveyor 86 provided on the gate conveyor 88 of the defect removal device 44 based on the detection result of the label 70 by the mark sensor 94 and the failure map (failure information). The controller 48 can track the recording paper 16 (web 18) to which the label 70 is attached using the encoder 102.

  As a result, the controller 48 moves the swing conveyor 86 when the recording paper 16 at the position where the disposal of the recording paper 16 over the entire width of the web 18 is set passes through the gate conveyor 88 of the defect removing device 44. It swings.

  On the other hand, a gate conveyor 96 that forms the defect removal device 46 is provided on the downstream side of the stacking device 78. In the gate conveyor 96, an upper conveyor 96A and a lower swing conveyor 98 facing the conveyor 96A are arranged at a predetermined interval, and the gate conveyor 96 is a booklet fed from the stacking device 82. 30 is conveyed between the conveyor 96A and the swinging conveyor 98.

  The oscillating conveyor 98 is oscillatable with the roller 98A on the upstream side (stacking device 72 side) as an axis, and the downstream side is downward (indicated by a two-dot chain line in FIG. 4). In addition, the defect removing device 46 is provided with a stacking box 100 for stacking the recording paper 16 to be discarded on the lower side of the tip of the swinging conveyor 98 that swings downward.

  When the mark sensor 94 detects the label 70 and the label 80, the controller 48 tracks the recording paper 16 based on the detection result and the output of the encoder 102, and based on the failure map, the gate conveyor 96 of the defect removal apparatus 46 is tracked. Is controlled.

  As a result, the swing conveyor 98 swings, and the booklet 30 of the recording paper 16 delivered from the stacking device 82 is conveyed toward the stacking box 100 by the swinging conveyor 98 and is put into the stacking box 100. Thus, the recording paper 16 can be discarded in units of books 30 for each slit.

  In the production system 100 provided with the defect removal system 40 configured as described above, the papermaking / laminating process is performed in the papermaking / laminating process 12, and then the coating process is performed in the coating process 14. The original fabric 20 is generated, and the generated original fabric 20 is stored.

  Further, the stored original fabric 20 is loaded into the cutting step 22 and the web 18 is pulled out. In the cutting step 22, slit processing is performed to cut the web 18 at a predetermined width while being conveyed. Thereby, a plurality of webs 18 </ b> A are generated, and the webs 18 </ b> A are integrally fed to the cutting process 24.

  In the cutting step 24, the web 18 is integrally cut at a predetermined interval along the longitudinal direction. Thereby, the multi-row recording paper 16 is continuously formed and sent out from the cutting step 24.

  In the stacking step 26, a predetermined number of sheets of recording paper 16 are stacked together with the slits to produce a book 30. The booklet 30 is sent out from the stacking process 26 one by one, and sealed in the packaging process 28 to produce a package 32 that is a product of the recording paper (inkjet recording paper) 16.

  Incidentally, the production system 10 applied to the present embodiment is provided with a defect removal system 40 for removing the recording paper 16 in which surface defects have occurred. In the defect removal system 10, when the web 18 after the coating process is wound up in a roll shape using the defect detection means such as the defect detection device 42 provided in the coating process 14, the original fabric 20 is formed. A failure such as a surface abnormality of the web 18 is detected.

  In the defect removal system 40, the recording paper 16 is removed based on the detection result by using the defect removal devices 44 and 46. At this time, the defect removal device 44 uses the width of the web 18. The defect removal device 46 performs the slit removal for each web 18A, so that the defect removal system 10 can perform reliable and efficient defect removal (fault removal). ) Is possible.

  Here, the removal of the recording paper 16 by the defect removal system 40 will be described.

  FIG. 5 shows an outline of the failure detection process using the defect detection device 42. The outline of the failure detection process in the defect removal system 40 will be described with reference to this flowchart. In the present embodiment, the failure detection on the surface of the web 18 using the defect removing device 42 will be described as an example. However, the failure detection of the web 18 is performed using a plurality of defect detection means, and each defect detection means. It may be performed in parallel.

  This flowchart is executed every time production of a new raw fabric 20 is started. In the first step 200, it is confirmed whether or not the conveyance of the web 18 has been started. Here, when the conveyance of the web 18 is started, an affirmative determination is made in step 200, the process proceeds to step 202, and counting of the conveyance amount of the web 18 using the rotary encoder 66 is started. The transport amount of the web 18 is counted so that, for example, the position where the laser beam is irradiated is wrapped around the inspection roll 50 when the leading end in the transport direction of the web 18 is the origin. The Further, the present invention is not limited to this, and it is sufficient that the irradiation position of the laser beam with respect to the origin is clear with the preset position of the tip of the web 18 as the origin.

  On the other hand, when the conveyance of the web 18 is started, the defect detector 52 performs surface inspection of the web 18 by irradiating the surface of the web 18 wound around the inspection roll 50 while scanning the laser beam.

  Accordingly, in step 204, it is confirmed whether or not a failure has been detected on the surface of the web 18 by the surface inspection.

  Here, if a failure is detected on the surface of the web 18, an affirmative determination is made in step 204 and the routine proceeds to step 206. In this step 206, the detected position along the width direction of the faulty web 18 and the position along the longitudinal direction of the web 18 are read as fault position information. At the same time, in step 208, a label 70 is affixed to the end portion in the width direction of the web 18 corresponding to the detected failure position using the marker 68.

  Thereby, every time a failure is detected, a label 70 indicating the detected failure position is affixed to the web 18 and failure position information is generated.

  In this way, when the process for one original fabric 20 (web 18) is completed and an affirmative determination is made in step 210, the process proceeds to step 212, and failure information for this original fabric 20 is stored.

  Thereby, in the defect removal system 40, the failure position on the web 18 is clearly indicated by the label 70, and the failure information is stored as electronic data.

  On the other hand, in the production system 10, the raw fabric 20 is loaded into the cutting process 22, and the web 18 </ b> A is produced by performing the cutting process in the cutting process 22, and the cutting process 24 performs the cutting process on each of the webs 18 </ b> A. As a result, a recording paper 16 having a predetermined size is produced. In the stacking step 26, the recording paper 16 is stacked in units of slits (webs 18A) to produce a book 30.

  At this time, in the defect removal system 40, first, based on the failure information stored for each original fabric 20, a method for discarding the failure location (the recording paper 16 in which the failure has occurred), that is, the defect removal device 44. It is set whether the recording paper 16 is discarded or the recording paper 16 is discarded by the defect removal device 46.

  Thereafter, the recording paper 16 is discarded based on the set disposal method (defect removing device 44 or defect removing device 46). At this time, in the defect removal system 40 (controller 48), first, the actual disposal on the web 18 is performed while performing the full width discard of the recording paper 16 (full width discard of the web 18) using the defect removal device 44. When the execution position is specified and the actual disposal execution position on the web 18 is identified, the disposal based on the disposal method set for each failure is performed while confirming the failure position. Like that.

  FIG. 6 shows an outline of setting the disposal method of the recording paper 16 in the controller 48 provided in the defect removal system 40. In the defect removal system 40, when the original fabric 20 used for processing the recording paper 16 is loaded in the cutting step 225, failure information for the original fabric 20 is input. Thereby, the controller 48 sets the disposal method.

  In this flowchart, when failure information for the original fabric 20 is read in the first step 220, a failure map based on the read failure information is created in step 222.

  Thereafter, in step 224, a binary image based on the generated failure map is generated, image processing is performed on the binary image, and a streak failure 72 from which the recording paper 16 is removed is extracted by the defect removing device 46 (step). 226).

  Here, an example of the image processing executed in step 224 and the streak failure 72 in step 226 will be described. In this image processing, for example, a binary image is generated in which a failure position based on failure information is a black pixel and a non-failure portion is a white pixel. In this image, for example, when the web 18 has a width of 4 m and a length of 2500 m, the width direction is set to 400 dots (resolution 10 mm).

  Further, the number of divisions is set in the length direction of the web 18 so that at least the minimum interval of the label 70 indicating the failure position is the resolution. In the present embodiment, as an example, the minimum interval between the labels 70 is 200 mm (resolution: 200 mm). From here, the length direction is set to 12,500 dots for the web 18 having a length of 2500 mm.

  Here, an expansion process is performed on the black pixel indicating the failure position, thereby forming an image that reliably connects the failure points that are approaching. After this, the area and first moment (image directionality) are obtained for each image (isolated island of black pixels), and each of the area and directionality (angle with respect to the width direction of the web 18) is set in advance. When the value is exceeded, it is determined that the corresponding image is a streak failure 72 on the web 18.

  When the failure information includes failure strength information in addition to the failure position for each label 70, a grayscale failure information image in which the failure strength is replaced with an image density is generated instead of binary image processing, and the grayscale failure image is displayed. Alternatively, the streak fault 72 may be extracted by performing image processing on the image.

  In this way, by extracting the streak fault 72, the streak fault 72 and the point fault 74 are sorted, and the recording paper 16 is extracted by the defect removing device 44 for each of the labels 70 affixed to the web 18. A point fault 74 for performing (discarding) and a streak fault 72 for extracting the recording paper 16 by the defect removing device 46 are set (step 228).

  The controller 48 uses the marker 78 when the streak fault 72 for discarding the recording paper 16 is set by the defect removal device 46, and uses the label 80 after the first label 70 as the start position of the corresponding fault. Affixed to the web 18 (step 230). At this time, the position and length along the web width direction of the corresponding streak fault 72 can be recorded on the label 80.

  The setting of the disposal method is not automatically performed by the controller 48, but the recommended disposal method may be displayed on the display device of the input / output unit 76 and the operator may make a final decision. .

  In the defect removal system 40, when the point failure 74 in which the recording paper 16 is discarded by the defect removal device 44 and the streak failure 72 in which the recording paper 16 is discarded by the defect removal device 46 are set in this way, the processing of the web 18 is performed. At the same time, the recording paper 16 is removed using the defect removing devices 44 and 46.

  FIG. 7 shows an outline of defect removal. This flowchart is executed by starting the processing of the original fabric 20 (production of the recording paper 16) in a state where the disposal setting is completed, and is attached to the web 18 by the mark sensor 94 in the first step 250. It is confirmed whether or not the first label 70 is detected.

  Here, when the mark sensor 94 detects the first label 70 affixed to the web 18, an affirmative determination is made at step 250 and the routine proceeds to step 252, where the recording paper 16 indicated by this label 70 is transferred to the defect removal device 44. Is set to be completely discarded. At the same time, in step 254, a counter C that counts the number of labels 70 is set (C = 1).

  As a result, the defect removing device 44 tracks the recording paper 16 (web 18) and operates the swing conveyor 90 at the timing when the recording paper 16 at the position specified by the label 70 reaches the gate conveyor 88. Thus, the entire width of the recording paper 16 is discarded.

  When the process for the first label 70 is set in this way, the process proceeds to step 256 to check whether or not the mark sensor 94 has detected the next label 70. As a result, when the mark sensor 94 detects the next label 70, an affirmative determination is made in step 256, and the process proceeds to step 258. The recording paper 16 at the position specified by the detected label 70 is abandoned by the defect removing device 44. Set to reject.

  At the same time, in step 260, the interval of the label 70 is read based on the output of the encoder 102. That is, the conveyance amount of the web 18 (recording paper 16) from the detection of the previous label 70 to the detection of the next label 70 is read.

In step 262, the counter C to count up (increment, C = C + 1) of label 70, in step 264, the value of the counter C checks whether reaches the predetermined value C ₀ which is set in advance.

When a predetermined number of labels 70 (predetermined value C ₀ , for example, C ₀ = 20) are detected in this way, an affirmative determination is made at step 264 and the routine proceeds to step 266. At this time, the number of labels 70 (predetermined value C ₀ ) is determined on the web 18 of the label 70 detected last, from the interval of the labels 70 detected by the mark sensor 94 and the interval of the labels 70 based on the failure information. Any number can be used as long as the position of the position can be specified. In addition, when the processing of the web 18 is finished before the predetermined number of labels 70 are detected due to a small number of failures, this processing may be finished as it is.

  In step 266, the interval pattern of the read label 70 is compared with the pattern of the label 70 obtained from the failure information, and in step 268, it is confirmed whether there is a matching pattern.

  For example, when the first 20 labels 70 are detected, the 19 label interval numerical value patterns at this time are used as registered patterns, and the failure interval on the failure information (electronic data) is digitized. Then, normalized correlation measurement (pattern matching) is performed. Thereby, the measurement information of the failure information (position information along the longitudinal direction of the web 18) is changed from the reference of the coating machine (the coating process 14) to the processing machine (the cutting process 24 to the stacking process 26) that does not include an error. Convert.

  Here, when the pattern of intervals of the predetermined number of labels 70 based on the failure information matches the pattern of intervals of the labels 70 detected by the mark sensor 94, the position of the web 18 facing the mark sensor 94 is determined. It can be determined that it is possible to determine that the actual failure location has been removed reliably.

  Thereby, for example, even when the length of the web 18 is changed because the tip of the web 18 is cut off for sampling or the like, the failure information for the web 18 is appropriately checked against the actual failure position. Is possible.

  Thus, if an affirmative determination is made in step 268, in step 270 it is confirmed whether or not the next label 70 has been detected by the mark sensor 94. If the next label 70 is detected, an affirmative determination is made in step 270 and the step The process shifts to 272, the interval with the previous label 70 is read, and it is determined whether this interval matches the interval based on the failure information (step 274).

  If they match, an affirmative determination is made in step 274 and the process proceeds to step 276. Next, it is confirmed whether or not the mark sensor 94 has detected the label 80 indicating the streak failure 72.

  At this time, if the mark sensor 94 does not detect the label 80 following the label 70, it is determined that the mark is a point defect 74, a negative determination is made in step 276, and the process proceeds to step 278. It sets so that it may remove by the defect removal apparatus 44. FIG.

  On the other hand, when the label 80 is detected following the label 70, an affirmative determination is made in step 276, and the process proceeds to step 280. In this step 280, since the defect is a streak defect 72, the corresponding position is set to be removed by the defect removing device 46. That is, the slit removal is set.

  At this time, the slit position and length (number of books 30) to be removed by the defect removing device 46 may be set based on the defect information, and information on the position and length recorded on the label 80 may be used. It may be read by the mark sensor 94 and set based on this information.

  In this way, when the defect removal device 46 is set to be discarded, the timing at which the book 30 on which the corresponding position is tracked and the slit (web 18 </ b> A) in which the streak failure 72 is accumulated reaches the gate conveyor 96 is reached. Then, the swing conveyor 98 is swung, and the corresponding book 30 is put into the stacking box 100.

  That is, when the line sensor 72 is detected by the mark sensor 94, a flag indicating that there is a line defect 72 is delivered to the accumulator 82 as tracking information without operating the defect removal device 44. Thereafter, when the book 30 including the recording paper 16 in which the streak failure 72 has occurred is sent out from the stacking device 82, the corresponding recording paper 16 is discarded in units of the book 30 by operating the swing conveyor 98. Reject.

  When the setting for the streak failure 72 is completed, the process proceeds to step 282 to check whether or not the last label 70 of the continuous labels 70 has been detected. If the determination in step 282 is affirmative, the process proceeds to step 270. The next label 70 (failure position) is detected.

  When the rear end of the web 18 is detected, an affirmative determination is made at step 284, and the processing for the web 18 is terminated. Furthermore, when the pattern (interval) of the label 70 of the failure information does not match the pattern (interval) of the label 70 detected by the mark sensor 94, that is, when a negative determination is made in step 268 or step 274, an appropriate failure Since there is a possibility that disposal has not been performed, error processing such as prompting the operator to confirm is executed.

  As described above, in the defect removal system 40 applied to the present embodiment, the position on the web 18 on which the processing is being performed is confirmed while the full width is abandoned at the start of the abandonment of the failure position. After the confirmation of the position is completed, it is possible to remove the defect with high accuracy by discarding the failed part while comparing the failure information with the actual failure position.

  That is, when the origin is provided on the web 18 such as the tip of the web 18 when collating the failure information with the actual failure position on the web 18, the failure information is obtained if the origin position is removed by sampling or the like. Then, it becomes difficult to collate the failure position on the web 18.

  Therefore, in order to surely discard the failure location, even the point failure 74 needs to be discarded over a wide range, for example, within 10 m.

  On the other hand, in the defect removal system 40, the origin is not provided on the web 18, but the position on the web 18 being processed is specified from the pattern of the failure position interval on the web 18 and the failure position interval in the failure information. I am doing so.

  Thereby, in the defect removal system 40, the failure information and the failure position on the web 18 can be accurately collated, and the failure can be eliminated with high accuracy. Therefore, it is possible to dispose of only the failed part accurately without a large margin.

  Further, in the defect removal system 40, the defect removal apparatus 44 that performs the full width elimination and the defect removal apparatus 46 that performs the slit elimination use the defect removal apparatus 44 or the defect removal apparatus 46 according to the failure on the web 18. Since the recording paper 16 is discarded by selection, the amount of the recording paper 16 that is unnecessarily discarded can be suppressed, and the yield can be improved.

  In the present embodiment, it has been described that the label 80 includes information on the position (position in the web width direction) and length of the streak failure 72. However, this information is not recorded on the label 80, but is recorded on the controller. The failure information stored in 48 may be used. Further, the streak fault 72 and the point fault 74 are distinguished by the presence or absence of the label 80, but the streak fault 72 and the point fault 74, that is, the fault discarded by the defect removing device 44 and the fault discarded by the defect removing device 46 are shown. The identification is not limited to the use of the label 80, and any method can be applied.

In the present embodiment, a predetermined number C ₀ of labels 70 (failure) is detected, and the failure information is compared by comparing the interval pattern of the label 70 at that time with the failure interval pattern obtained from the failure information. The positions of the labels 70 on the web 18 are collated. However, the present invention is not limited to this. For example, the interval between the first predetermined number (for example, five) of labels 70 is measured to obtain a failure interval pattern.

  At the same time, the first failure interval pattern from the first failure location to the same number of failure locations from the failure information, and the second failure interval pattern obtained from the second failure location, continue to the nth failure pattern. N failure interval patterns are created, and a failure interval pattern that is closest to the failure interval pattern obtained from the label 70 is determined.

  As an approximate pattern search method at this time, a normalization function pattern search used for matching similar images, a square error minimum method, or the like can be used. In addition, instead of the number of labels 70 (number of failures), an arrangement pattern of labels 70 (arrangement of failures) in the web 18 having a predetermined length (for example, 20 m or less, 100 m or less, etc.) may be used.

  Here, based on whether or not the failure pattern of the label 70 on the web 18 is approximate to the failure interval pattern, the first label 70 attached to the coating step 14 is determined. It can be determined whether it is 70 or not. That is, when the failure interval pattern approximates to the second failure interval pattern, the label 70 applied first in the application step 14 is removed, and the leading label 70 remaining on the web 18 is applied to the application step 14. Thus, it can be determined that the label 70 is affixed second, and the subsequent label 70 can correspond to the failure information.

  Thereby, each label 70 on the web 18 and the failure information are associated with each other, and a failure location extraction process (removal process) is performed.

  At this time, if it is determined that the label 70 is missing or omitted, the corresponding failure can be complemented with the failure information and the disposal process can be performed.

  From here, a label 70 is affixed to the failure location within a predetermined interval along the longitudinal direction of the web 18 so that the failure position on the web 18 (the position of the label 70) and failure information can be collated. Thus, in a range excluding this, the label 70 can be omitted from the web 18 and the failure can be discarded using only the failure information.

  At this time, as the failure information, there is an actual failure and the label 70 is attached at a position corresponding to the actual failure, and there is an actual failure, but there is a case where the label 70 is not attached at a corresponding position. For each actual fault, the fault length position, width position, and fault characteristic information may be included. It should be noted that the state where the label 70 is not attached even though there is an actual failure can include a case where the label 70 cannot be attached due to a switching operation of the label 70 or the like.

  Further, the failure information can include information when there is no actual failure but the label 70 is pasted to reduce the tracking error. At this time, information indicating that there is no failure and the label 70 is pasted. May be provided as information (failure information) for the corresponding label 70.

  At this time, in consideration of the thinned label 70 attached to the intermediate portion and the rear end portion (last portion) of the web 18, the thinned label arrangement pattern, the position information of each failure with respect to this arrangement pattern, and Failure status information is recorded as failure information, and failure extraction processing can be performed based on failure information, which makes it possible to perform appropriate extraction processing (disposal processing) while eliminating tracking shifts in failure locations. It can be performed.

  In addition, this Embodiment demonstrated above does not limit the structure of this invention. For example, in the present embodiment, the failure position on the web 18 is specified using the label 70, but the present invention is not limited to this, and thermal paper can be used as a label for marking on the web. Punching, laser marking, and inkjet marking may be used without using a label, and an RFID tag (Radio Frequency Identification tag) can also be used.

When using thermal paper as a label, it is possible to easily add a disposal method or the like to the label using a CO ₂ laser.

  When the RFID tag is used, a surface inspection of the web 18 is performed, and the RFID tag is attached to the end of the web 18 in the width direction instead of the label 70 every time a failure is detected. At this time, the RFID tag is recorded with a roll number for distinguishing the target roll from other rolls and a tag serial number for distinguishing it from other RFID tags within the same roll.

  At the same time, the failure information for each tag number is stored as the inspection result. At this time, the failure information includes position information along the longitudinal direction of the web 18 such as the number of pulses output from the rotary encoder 66 based on the winding start position of the web 18, and the position along the width direction of the web 18. The detected failure strength information can be included.

  The method of extracting the failure location is set from the failure map created based on this failure information. For example, when failures occur continuously in a time series at a specific position along the width direction of the web 18, a sampling method is set as a streak failure 72 to be discarded in units of the book 30. In addition, for a failure that occurs sporadically, a sampling method is set as a point failure 74 that is discarded in units of the entire width.

  That is, the sampling method is set so that the yield is superior in consideration of the distribution of faults on the web 18.

  Information is written to each RFID tag on the web 18 by counting the number of RFID tags affixed to the side of the original fabric 20 around which the web 18 is wound, and comparing the number of RFID tags in the failure information. When the numbers match, the writing antenna is brought close to the side surface of the original fabric 20, and the extraction method is written together with the failure information in accordance with the tag numbering of each RFID tag.

  If the number of RFID tags does not match, the tag serial number of each RFID tag is checked, and the extraction method is written together with the failure information.

  Further, when the recording paper 16 is discarded, an RFID tag reader is used instead of the mark sensor 94, and an extraction method is read from the detected RFID tag together with failure information while detecting the RFID tag, and the recorded extraction method is used. Based on this, the defect removal device 44 or the defect removal device 46 may be used to eliminate the failure part.

  Further, in the present embodiment, the inkjet recording paper 16 has been described as an example. However, the present invention is not limited to the inkjet recording paper, but is a web-like sheet material such as various recording papers, X-ray films, photographic films, and photographic paper. Can be applied to the production of various sheet bodies that are processed into a sheet of a predetermined size.

It is a schematic block diagram of the production system and defect removal system applied to this Embodiment. It is a schematic perspective view of the principal part which shows an example of a defect detection apparatus. It is a schematic perspective view of the web which provided the label which shows a failure position. It is a schematic block diagram which shows an example of the defect removal apparatus arrange | positioned on both sides of an integrated device. It is a flowchart which shows the outline of a failure detection. It is a flowchart which shows the outline of the discard setting based on failure information. It is a flowchart which shows the outline of a failure condition.

Explanation of symbols

10 Production system 14 Coating process (roll production process)
16 Sheet body 18 Web 18A Web 20 Original fabric (roll)
22 Cutting process (processing process)
24 Cutting process (machining process)
26 Integration process 30 volumes 40 Defect removal system 42 Defect inspection device 44 Defect removal device (full width discarding means)
46 Defect removal device (slit discarding means)
48 controller 52 defect detector 64 detection control unit 66 rotary encoder 68 marker 70 label (index)
72 Line fault 74 Point fault 78 Marker 80 Label (Processing setting index)
82 Integrated Device 94 Mark Sensor 102 Encoder

Claims (8)

A roll production process for winding the web into a roll;
A processing step of producing a sheet body of a predetermined size by cutting or cutting while pulling out the web from the roll;
A defect removal method for removing defects in a sheet body production system comprising:
In the production process, a defect detection step of detecting the position of the defect along at least the longitudinal direction of the web together with the presence or absence of a defect on the web;
A marking step for providing an index according to the position along the web longitudinal direction of the defect detected in the defect detection step;
A data generation step for generating defect information including web longitudinal positions of individual defects based on the detection result of the defect detection step;
In the processing step, an index detection step for detecting the index applied to the web and an interval along the longitudinal direction of each index;
A collation step of collating a predetermined number of the index intervals with the defect information to identify the position of the index detected in the index detection step on the web;
A removal step of removing a failure identified by the matching step from the web based on the detection result of the index detection step or the defect information;
A defect removal method comprising: A roll production process for winding the web into a roll;
A cutting step of cutting with a predetermined width while pulling out the web from the roll;
A cutting step for producing a sheet body by integrally cutting the web cut at a predetermined width in the cutting step into a predetermined length;
An accumulation step for producing a book in which a predetermined number of sheet bodies are accumulated by collecting the sheet bodies for each web cut in the cutting step;
A defect removal method for removing defects in a sheet body production system comprising:
In the production process, a defect detection step of detecting the position of the defect along at least the longitudinal direction of the web together with the presence or absence of a defect on the web;
A marking step for providing an index according to the position along the web longitudinal direction of the defect detected in the defect detection step;
A data generation step for generating defect information including the web longitudinal direction position and the width direction position of each defect based on the detection result of the defect detection step;
On the sheet body that is cut and integrally fed in the cutting step, the index detection step for detecting the index applied to the web and the interval along the longitudinal direction of each index;
A collation step of collating a predetermined number of the index intervals with the defect information to identify the position of the index detected in the index detection step on the web;
A removal step of removing the failure identified by the collating step from the web based on the detection result of the index detection step or the defect information;
A defect removal method comprising: A full width discarding means for discarding the sheet body integrally conveyed along the width direction of the web from the cutting process to the stacking process in the discarding step;
Slit discarding means for discarding the books collected in the collecting step;
The defect removal method according to claim 2, further comprising:   The defect removal according to claim 3, further comprising a setting step for setting whether the sheet body is discarded by the full width discarding unit or the slit discarding unit based on the defect information. Method.   In the setting step, a defect position image having individual defects as pixels is formed based on the defect information generated in the data generation step, and full width discard or slit discard is set based on the defect position image. The defect removal method according to claim 4, wherein:   The said setting step WHEREIN: While the said index detection means detects the said predetermined number of parameter | indexes, the discard of the said sheet | seat body by the said full width discard means is set, The Claim 4 or Claim 5 characterized by the above-mentioned. Defect removal method.   Prior to the cutting process of the web, the setting means gives a processing setting index based on a setting result to the web according to the defect position, and a processing setting index together with an index indicating the defect position in the index detection step. The defect removal method according to claim 4, wherein reading is performed.   When slit disposition is indicated by the processing setting index, the defect position along the web width direction is indicated on the processing setting index, and the defect position along the web width direction indicated on the processing setting index is read at the index detecting step. The defect removal method according to claim 7, wherein the book at the corresponding position is discarded by the slit discarding means.

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