Method for removing defective portions of a sheet body capable of coping with defective portions caused by a plurality of processes, and winding device

Abstract

To provide a method for removing a defective part of a sheet body that improves accuracy of sheet body stop control by temporarily stopping second and subsequent defective labels on the basis of a distance between adjacent defective labels in the identical previous steps.SOLUTION: A method for removing a defective part of a sheet body includes: a plurality of previous steps 30; an inter-label distance calculation step S12 of imparting a defective label 60 to each of the defective parts due to each of the previous steps 30, out of the defective labels 60 imparted in the identical previous steps 30, setting a defective label 60 nearest to a winding upper end of a sheet body 40 as a first label, setting a second nearest defective label 60 as a second label and calculating a distance between the first defective label SL1, DL1 and the second defective label SL2, DL2 as inter-label distances X1-2, Y1-2; and a stop control step S13 of stopping the sheet body 40 on the basis of the inter-label distances X1-2, Y1-2 calculated in the inter-label distance calculation step S12.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a defective portion removing process for removing a defective portion from a roll-shaped sheet body (hereinafter also referred to as "original web") while winding it up, and once stopping the winding at the defective portion to remove the defective portion from the original web, and relates to a technique for removing a defective portion from a roll-shaped sheet body based on the position information of the defective portion obtained in the previous process.

Background Art

[0002] The defective portion removing process for removing a defective portion from a roll-shaped sheet body such as a packaging film original web is performed using, for example, a machine called a slitter device. The slitter device executes the operation process of winding up the roll-shaped sheet body, detects a defective portion in the sheet body during the winding, and temporarily stops the winding operation process. During the temporary stop, an operator cuts the portions before and after the defective portion including the defective portion from the sheet body to remove the defective portion from the sheet body, and rejoins the sheet body at the cutting position. When the rejoining process of the sheet body is completed, the operator resumes the above-mentioned winding process. By repeating this, a plurality of defective portions existing in the original web are removed.

[0003] Generally, in the previous process of the defective portion removing process (slitter process) using a slitter device, a label (such as a tape) is attached to the defective position existing in the sheet body (see Patent Document 1). In the defective portion removing process, the winding is stopped at the defective portion based on the detection of the label. The previous process is, for example, a printing process for printing on the sheet body, and the defect is, for example, a printing mistake or a flaw in the sheet body itself. The labeling of the position of the defective portion (hereinafter also referred to as "defective position") is executed, for example, by detecting a defect such as a printing defect by image processing or the like after winding up the original web and before rewinding it after the printing process is performed, and automatically attaching a label to the detected defective portion.

[0004] In addition, in the previous process, the defect position information of the defective positions with labels attached is also acquired. The position information of the defective parts is obtained by measuring, with a measuring unit (such as an encoder), the winding length of rewinding up to each defective position, as in Patent Document 1. Thus, the defective position of each defective part is defined by the winding length from the start of measurement on the core side of the roll winding up to the defective position. In Patent Document 1, each piece of defect position information obtained in the previous process is converted into the length up to each defect position based on the position on the starting side (outer side of the roll) of winding in the base material during the defective part removal process. According to each piece of defect position information after conversion, rewinding is performed by an amount corresponding to the winding amount up to each defect position from the start of winding. Each time the corresponding label is checked, winding is stopped, and during that stop, the operator executes the removal process and the reconnection process of the defective part.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] As described above, in the defective part removal process, during the winding of the base material, based on the label attached to the sheet body, the position of the defective part is detected and winding is stopped. Here, the operation of winding the base material in the slitter device is executed with high-speed rotation operation for work efficiency. Therefore, in order to surely stop winding at the next defective position (label position), the winding speed at high speed is decelerated and switched to a slow running operation before the defective position, and during that slow running operation, by checking the label, it is possible to surely stop winding at the defective part.

[0007] At this time, if the reference position for starting winding is shifted, the accuracy of each defective position information deteriorates. Therefore, in Patent Document 1, the winding quantity (length to the defective position) from the reference position set on the outer side of the original roll to each defective portion is used to sequentially estimate the defective portion position, so that the winding can be temporarily stopped at the defective portion. Here, if the winding is stopped at the position detected as a defective portion in the previous process, the operator cuts the front and back including the defective portion with the cutter of the slitter device and performs a re-bonding process. Due to the defective portion removal process, the position information of the subsequent defective portions contains errors in the defective position information obtained in the previous process, and the errors accumulate as the defective portion removal process is repeated. That is, the accumulation of errors increases as the number of defective portion removals increases.

[0008] For this reason, in order to prevent undetected defective portions (passage of defective positions) due to label detection omission, conventionally, the operation was switched to a slow operation, for example, 100 m before the planned next stop position based on the defective position information. And there was a problem that the longer the period of this slow operation, the longer the time required for the processing of the defective portion removal process. Also, for example, the operation is switched to a slow operation 100 m before. Conventionally, in order to reduce the speed reduction loss due to the slow operation, the operator visually monitors the conveyed sheet body or label and manually temporarily increases the conveyance speed during the slow operation as appropriate. However, the operator's burden increases when the operator visually monitors and works on a sheet body as long as 100 m.

[0009] The present invention has been made paying attention to the above points, and an object thereof is to reduce the speed reduction loss in the defective portion removal process while suppressing the operator's burden.

Means for Solving the Problem

[0010] A method for removing defective portions according to one aspect of the present invention is a method for removing defective portions that winds up a roll-shaped sheet body and temporarily stops winding before each defective portion based on the position information of the defective portions in the sheet body obtained in the previous process, and removes a portion including the defective portion in the sheet body from the sheet body. The previous process includes a plurality of steps, and a defective label is assigned to each defective portion caused by each previous process. A label detection device that detects the defective label, among the defective labels assigned in the same previous process, the defective label closest to the upper winding end of the sheet body is the first one, and the next closest defective label is the second one, and a label distance calculation step that calculates the distance between the first defective label and the second defective label as the label distance, and a stop control step that stops the sheet body based on the label distance calculated in the label distance calculation step. It is characterized by comprising.

[0011] Further, a method for removing defective portions according to one aspect of the present invention includes a creep control step of causing the sheet body to run at a creep speed based on the label distance calculated in the label distance calculation step, and a creep / stop selection step capable of selecting the stop control step or the creep control step. It is characterized by comprising. A method for removing defective portions according to one aspect of the present invention is characterized in that the position information of the defective portions includes the removal distance of the defective portions continuous with the defective label, and includes a removal distance subtraction step of subtracting the removal distance from the label distance calculated in the label distance calculation step.

[0012] A method for removing defective portions according to one aspect of the present invention is characterized by including a creep / stop pre-distance calculation step of calculating the creep / stop pre-distance Z(m) until the second and subsequent defective labels are creeped / stopped based on the label distance Y(m) calculated in the label distance calculation step using the following formula (1), by presetting an error correction coefficient a(%) with respect to the label distance Y(m) and a minimum stop distance b(m) of the sheet body. Z = aY + b ··· Formula (1) -10 ≦ a ≦ 10 0 ≦ b ≦ 99

[0013] A method for removing defective portions according to an aspect of the present invention is characterized in that, in the previous process, position information of the defective portions is converted into barcodes, the converted barcodes are displayed on a sorting card and attached to the sheet body, and after the previous process is completed, in the process of removing the defective portions, a code reading step of reading the barcodes displayed on the sorting card is provided.

[0014] A winding device according to an aspect of the present invention is a winding device that winds a roll-shaped sheet body and can temporarily stop winding before each defective portion based on the position information of the defective portions in the sheet body acquired in the previous process. There are a plurality of the previous processes, and a defective label is attached to each defective portion caused by each previous process. In a temporarily stopped state of the sheet body by the winding device, a portion of the sheet body including the defective portion can be removed from the sheet body. The winding device includes a label detection device for detecting the defective label, and among the defective labels attached in the same previous process, the defective label closest to the upper end of the wound sheet body is regarded as the first one, and the next closest defective label is regarded as the second one. A label distance calculation unit that calculates the distance between the first defective label and the second defective label as the label distance, and a stop control unit that stops the sheet body based on the label distance calculated by the label distance calculation unit.

[0015] A winding device according to an aspect of the present invention is characterized in that the winding device includes a creep control unit that causes the sheet body to run at a creep speed based on the label distance calculated by the label distance calculation unit, and a creep / stop selection unit that can select the stop control unit or the creep control unit. A winding device according to an aspect of the present invention includes a removal distance subtraction unit that subtracts the removal distance of the defective portion continuous with the defective label from the label distance calculated by the label distance calculation unit in the position information of the defective portion.

[0016] A winding device according to an aspect of the present invention includes a storage unit capable of presetting and storing an error correction coefficient a (%) with respect to the label interval distance Y (m) and the minimum stop distance b (m) of the sheet body in the winding device, and reading the error correction coefficient a and the minimum stop distance b stored in the storage unit, and based on the label interval distance Y calculated by a stop-before distance calculation unit, a pre-slowing / stopping distance Z (m) until the subsequent defective labels are gradually slowed down and stopped is calculated using the following formula (2). The winding device is characterized by comprising a pre-slowing / stopping distance calculation unit. Z = aY + b ··· Formula (2) -10 ≦ a ≦ 10 0 ≦ b ≦ 99

Effect of the Invention

[0017] According to an aspect of the present invention, the accuracy of stop control of the sheet body can be improved by temporarily stopping the subsequent defective labels based on the distance between adjacent defective labels in the same previous process.

Brief Description of the Drawings

[0018]

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Embodiments for Carrying Out the Invention

[0019] (Features of Embodiments According to the Present Invention) The first point of the embodiment according to the present invention is that, as shown in FIGS. 24 and 25, the distances X1-2 and Y1-2 between the labels are used for the temporary stop of the defective labels 60 after the second sheet. The second point is that, as shown in FIG. 12, the position information of the defective portion sent from the previous process 30 includes the removal distance of the defective portion continuous with the defective label 60. However, after the removal of the defective portion, the removal distance is subtracted from the distances X1-2 and Y1-2 between the labels. The third point is that, as shown in FIG. 12, the distances X1-2 and Y1-2 between the labels are corrected using the error correction coefficient a and the minimum stop distance b of the sheet body 40. According to the first point, by using the distances X1-2 and Y1-2 between the labels, as shown in FIG. 1, the influence of the winding-up removal in the previous process 30 can be reduced. According to the second point, by subtracting the removal distance from the distances X1-2 and Y1-2 between the labels, the position accuracy of the stop control and the creep control can be improved. According to the third point, by correcting the distances X1-2 and Y1-2 between the labels using the error correction coefficient a and the minimum stop distance b, the influence of measurement errors such as an encoder in the previous process 30 can be reduced, and the position accuracy of the stop control and the creep control can be improved.

[0020] (Description of Embodiments of the Present Invention) Next, embodiments of the present invention will be described with reference to the drawings. In this embodiment, as shown in FIGS. 3, 5, and 7, for the raw material roll 41 formed by rolling up the long sheet body 40, as shown in FIG. 2, generally speaking, taking the case of executing each process of the previous process 30 and the defective part removing process 20 in this order as an example, an explanation will be given. The previous process 30 will be described by taking as an example the case of executing each process of (1) the first previous process 31 and (2) the second previous process 32 in this order. Note that the first previous process 31 is also called the "SL process" or the "printing process", and the second previous process 32 is also called the "DL process" or the "lamination process".

[0021] (The first previous process 31 (SL process, printing process)) As shown in FIG. 3, the first previous process 31 winds up the roll-shaped sheet body 40, continuously performs printing on the sheet body 40 being conveyed by the printing device 200, and winds up the printed sheet body 40 with the first winder 250 to make it into the roll-shaped raw material roll 41 again.

[0022] (Regarding defective position information and labeling process) In the first previous process 31, as shown in FIG. 3, between the printing device 200 and the first winder 250, along the sheet body 40, a defective detection device 210, a first labeler 220, and a first defective processing controller 230 are provided. The defective detection device 210, the first labeler 220, and the first defective processing controller 230 continuously perform a defective detection process on the sheet body 40 to be wound up, attach a label to the position of the detected defective part, and execute a process of obtaining the defective position information of the defective part and storing it in the first storage unit 240. Here, as shown in FIG. 6, the labels are marked with the symbols LV1, LV2, SL1 to SL4. LV1 and LV2 are also called "reference labels", and SL1 to SL4 are also called "defective labels 60" as shown in FIG. 1.

[0023] (The defective detection device 210) As shown in FIG. 4, the defect detection device 210 includes an image processing unit 211A and a second conveyance amount measurement unit 211B that measures the conveyance amount of the sheet body 40. (Image processing unit 211A) As shown in FIG. 4, the image processing unit 211A includes an imaging unit 211Aa that images the surface of the conveyed sheet body 40 at a predetermined sampling period, and a defect detection unit 211Ab that performs image processing on the image captured by the imaging unit 211Aa to determine whether there are any defects in the captured image by image processing. The defect detection unit 211Ab outputs the detected defect detection signal to the first defect processing controller 230.

[0024] (Second conveyance amount measurement unit 211B) As shown in FIG. 4, the second conveyance amount measurement unit 211B measures the length of the conveyed sheet body 40 at a predetermined sampling period and outputs the measurement information to the first defect processing controller 230. Note that the second conveyance amount measurement unit 211B is also referred to as an "encoder". (First defect processing controller 230) As shown in FIG. 4, based on the measurement information from the second conveyance amount measurement unit 211B and the defect detection signal from the image processing unit 211A, the first defect processing controller 230 outputs defect position information, which is information from the measurement start position to the defect position, to the first storage unit 240, and performs tracking of each defect position. Synchronously with each defect position reaching the first labeler 220, a labeling signal is supplied to the first labeler 220.

[0025] (First labeler 220) When the first labeler 220 receives a labeling signal from the first defect processing controller 230, as shown in FIG. 6, it performs a process of attaching labels LV1, LV2 (reference labels) and labels SL1 to SL4 (defect labels 60 shown in FIG. 1(a)) to one end side in the width direction of the sheet body 40. (Second pre-process 32 (DL process, lamination process) As shown in FIG. 5, in the second pre-process 32, the laminated roll-shaped sheet body 40 is continuously subjected to a lamination material bonding process with respect to the sheet body 40 being unwound and conveyed by a laminating device 300. The sheet body 40 after the lamination process is wound by a second winder 350 and is processed again into a roll-shaped original fabric 41.

[0026] (Regarding defective position information and labeling process) Also in the second pre-process 32, similar to the first pre-process 31, as shown in FIG. 5, between the laminating device 300 and the second winder 350, along the sheet body 40, a defect detection device 310, a second labeler 320, and a second defect processing controller 330 are provided. Labels DL1 and DL2 (defect labels 60 shown in FIGS. 1(b) and 1(c)) are attached to defective portions such as lamination defects, and defect position information consisting of the length from the measurement start position to the defective portion is calculated and sequentially stored in the second storage unit 340. Here, as shown in FIGS. 1(b) and 1(c), the labels DL1 and DL2 are also hereinafter referred to as "defect labels 60". The defect detection device 310, the second labeler 320, and the second defect processing controller 330 in the second pre-process 32 have the same configuration as those provided in the first pre-process 31. However, the defect detection device 310 also detects the labels SL1 to SL4 attached in the first pre-process 31. When the defect detection device 310 does not detect the labels SL1 to SL4, the first label detection device 360 detects the labels SL1 to SL4 attached in the first pre-process 31. The first label detection device 360 is arranged between the defect detection device 310 and the second labeler 320. The second defect processing controller 330 also executes a process of recalculating the label defect position information detected by the defect detection device 310 or the first label detection device 360 and updating the information in the second storage unit 340.

[0027] (Reference label processing unit 330A) As shown in FIG. 5, the second defect processing controller 330 is provided with a reference label processing unit 330A. The reference label processing unit 330A applies a reference label (not shown), which is a label for measuring end and for removing defects, to the outer winding side (outer winding) of the sheet body 40, and outputs the position information of the label application position of the reference label to the second storage unit 340.

[0028] (Defect removal process 20) After the end of the second pre-process 32, as shown in FIG. 2, the process proceeds to the defect removal process 20. The defect removal process 20 is also referred to as the "ST process" hereinafter. As shown in FIG. 7, the defect removal process 20 is configured around the defect removal system 10.

[0029] (Defect removal system 10) As shown in FIG. 7, the defect removal system 10 winds up the roll-shaped sheet body 40 on which the lamination material is laminated, and based on the position information of the defective portions in the sheet body 40 obtained in the previous process 30, temporarily stops winding before each defective portion, and removes the portion including the defective portions in the sheet body 40 from the sheet body 40. The defect removal system 10 includes (1) a winding device 100, (2) a conveyance path 110, (3) a working position 120, (4) a second label detection device 130, and (5) a second conveyance amount measurement unit 150. Note that (1) to (5) will be described later.

[0030] (Winding device 100) As shown in FIG. 7, the winding device 100 is located on the winding side of the raw roll 41 and winds up the sheet body 40 set on the conveyance path 110.

[0031] (Conveyance path 110) As shown in FIG. 7, the following positions are preset in the conveyance path 110. Note that the following (1) to (3) will be described later. (1) The reference point P1 of the working position 120 (2) The stop position P2 (3) The slow start position P3

[0032] (Working position 120) As shown in FIG. 7, the working position 120 is arranged in the middle of the conveying path 110 and performs an operation of removing a portion including a defective portion of the sheet body 40 conveyed on the conveying path 110.

[0033] (Second label detection device 130) As shown in FIG. 7, the second label detection device 130 is arranged along the conveying path 110 and detects a defective label 60 attached to the sheet body 40 conveyed on the conveying path 110. As shown in FIG. 8, there are a plurality of second label detection devices 130, which are composed of a first sensor 131 and a second sensor 132. The first sensor 131 is arranged on the right side as shown in FIG. 8 and detects SL1, SL2, and SL3 among the defective labels 60. The second sensor 132 is arranged on the left side as shown in the figure and detects DL1 and DL2 among the defective labels 60.

[0034] (Second conveyance amount measurement unit 150) The second conveyance amount measurement unit 150 is for measuring the conveyance amount of the sheet body 40 conveyed on the conveying path 110, and is composed of, for example, a yard meter or the like. Note that the second conveyance amount measurement unit 150 is also referred to as an "encoder".

[0035] (Base point P1 of the working position 120) As shown in FIG. 7, the base point P1 is set at the starting point of the working position 120. (Stop position P2) As shown in FIG. 7, the stop position P2 is set a predetermined distance L1 (for example, 2 m) in front of the base point P1 of the working position 120. The stop position P2 refers to a position where the conveyance of the sheet body 40 is stopped when the defective label 60 is located there.

[0036] (Slow start position P3) As shown in FIG. 7, the slow start position P3 is located a predetermined distance (not shown) in front of the working position P1, that is, further in front of the stop position P2. As shown in FIG. 18, the slow start position P3 refers to a position where, when the defective label 60 is located at the Z position, the sheet body 40 is slowly driven at a speed lower than the normal conveyance speed.

[0037] (Control device 140) As shown in FIG. 17, the defective portion removing system 10 includes a control device 140. Although not shown, the control device 140 is configured around a CPU and is composed of a microcomputer including a ROM, a RAM, an I / O port, etc. By reading various programs and data stored in the ROM, HDD, etc., the CPU functions as each of the units 400 to 470. As shown in FIG. 17, the control device 140 includes (1) a third storage unit 400, (2) a label interval calculation unit 410, (3) a stop control unit 420, (4) a slow travel control unit 430, (5) a slow travel / stop selection unit 440, (6) a removal distance subtraction unit 450, (7) a slow travel / stop pre-distance calculation unit 460, and (8) a code decoding unit 470. Note that (1) to (8) will be described later.

[0038] As shown in FIG. 17, at the input stage of the control device 140, (1) a second conveyance amount measurement unit 150, (2) a second label detection device 130, (3) an input unit 160, and (4) a code reader 170 are respectively connected. Note that (3) and (4) will be described later. Also, at the output stage of the control device 140, (5) a winding device 100, (6) a slitter device 180, and (7) a display device 190 are respectively connected. Note that (6) and (7) will be described later.

[0039] (Input unit 160) The input unit 160 is composed of, for example, a keyboard or a mouse, and inputs various commands and data to the control device 140.

[0040] (Code reader 170) The code reader 170 is for reading the barcode 51 displayed on the sorting card 50 (see Fig. 9).

[0041] (Slitter device 180) The slitter device 180 cuts the sheet body 40 in the width direction with its cutter at the working position 120. Note that the slitter device 180 may include a roll processing machine that not only cuts the defective parts but also cuts (slits) the sheet body 40 in the longitudinal direction with an arbitrary width and then winds it up again into a roll shape.

[0042] (Display device 190) The display device 190 is, for example, a display, and displays a control screen on its display surface, for example, as shown in Fig. 16.

[0043] (Third storage unit 400) As shown in Fig. 17, the third storage unit 400 can store various information input via the input unit 160 and the code reader 170 connected to the control device 140. Among the various information, it includes the transmission information from the previous process 30 (including the position information of the defective parts). In addition, the third storage unit 400 includes an error correction coefficient a (%) for the label - to - label distance (m) and a minimum stop distance b (m) of the sheet body 40, which are preset through the input unit 160. (Label - to - label distance calculation unit 410) Among the defective labels 60 given in the same previous process 30, the label - to - label distance calculation unit 410 takes the defective label 60 closest to the upper end of the roll of the sheet body 40 as the first one, the next - closest defective label 60 as the second one, and calculates the distances between the first defective label SL1, DL1 and the second defective label SL2, DL2 as the label - to - label distances X1 - 2, Y1 - 2.

[0044] (Stop control unit 420) The stop control unit 420 is for stopping the sheet body 40 based on the label - to - label distances X1 - 2 and Y1 - 2 calculated by the label - to - label distance calculation unit 410. As shown in FIG. 17, the stop control unit 420 executes the stop control of the sheet body 40 by controlling the drive of the take - up device 100 connected to the control device 140. Basically, when the label - to - label distances X1 - 2 and Y1 - 2 become "0" m, the stop control unit 420 stops the drive of the take - up device 100 and stops the sheet body 40.

[0045] (Creeping control unit 430) The creeping control unit 430 is for causing the sheet body 40 to perform a creeping operation based on the label - to - label distances X1 - 2 and Y1 - 2 calculated by the label - to - label distance calculation unit 410. Similar to the stop control unit 420, the creeping control unit 430 controls the drive of the take - up device 100 to cause the sheet body 40 to perform a creeping operation as shown in FIG. 18.

[0046] (Creeping / stop selection unit 440) The creeping / stop selection unit 440 can select the stop control unit 420 or the creeping control unit 430. As shown in FIG. 17, the creeping / stop selection unit 440 executes the selection by an operation from the input unit 160 connected to the control device 140. Specifically, the selection is executed by the switch operation of "creeping" and "stop" shown in FIG. 16.

[0047] (Removal distance subtraction unit 450) The removal distance subtraction unit 450 subtracts the removal distance from the label - to - label distances X1 - 2 and Y1 - 2 calculated by the label - to - label distance calculation unit 410.

[0048] (Pre - creeping / stop distance calculation unit 460) The pre - creeping / stop distance calculation unit 460 calculates the pre - creeping / stop distance Z (m) until the second and subsequent defective labels SL2 and DL2 are creeped / stopped using the following formula (1). Z = aY + b ··· Formula (1) "Y" means the "label - to - label distance" and is calculated by the label - to - label distance calculation unit 410. "a" represents the "error correction coefficient" with respect to the label distance and is expressed, for example, using "%" The error correction coefficient a is preset, stored in the third storage unit 400, and read from the third storage unit 400. The error correction coefficient a is set within the following range and can take a "positive" value as well as a "negative" value. -10 ≦ a ≦ 10 "b" represents the "minimum stop distance" of the sheet body 40 and is expressed, for example, using "m". The minimum stop distance b is preset, stored in the third storage unit 400, and read from the third storage unit 400. The minimum stop distance b is set within the following range. 0 ≦ b ≦ 99 The error correction coefficient a and the minimum stop distance b are obtained after grasping the tendency of the encoder error between the previous process 30 and the defective part removal process 20.

[0049] (Code decoding unit 470) As shown in FIG. 17, the code decoding unit 470 decodes the barcode read via the code reader 170 connected to the control device 140. After decoding, the code decoding unit 470 extracts the transmission information from the previous process 30 (including the position information of the defective part) and stores it in the third storage unit 400.

[0050] (Explanation of the distance to the defective label 60 shown in FIGS. 10 to 15) The distance to the defective label 60 will be described with reference to FIGS. 10 to 15. (Before input shown in FIG. 10) FIG. 10 shows the state before input. In the upper row, columns for "total winding length", "first sheet (m)", "second sheet a = (%)", and "second sheet b = (m)" are arranged. "Total winding length" means the "total winding length" of the raw roll 41. "First sheet (m)" means the minimum stop distance applied to the defective labels SL1 and DL1 of the "first sheet". "Second sheet a = (%)" means the error correction coefficient a applied to the defective labels SL2 and DL2 after the "second sheet". "Second sheet b = (m)" means the minimum stop distance b applied to the defective labels SL2 and DL2 after the "second sheet". The following is in tabular form, with columns for "No.", "Removal Completed", "Label Position (m)", "Process No.", "Removal Distance (m)", "Distance to Label (m)", and "Distance Before Stop (Set Value)". Here, the "Removal Distance" means the distance of consecutive defective parts following the defective label 60. Note that the "Removal Distance" may also be displayed as, for example, "Removal Quantity" or "Removal Amount". It is also referred to as the "Removal Distance". In the rows of the "No." column, numbers from "1 to 10" are entered. The numbers represent the "quantity" of defective labels 60.

[0051] (Shown in Figure 11, after input (at the time of setting)) In Figure 11, the input values at the time of setting are entered. The input values are input to the control device 140 by the input unit 160 or the code reader 170 in Figure 17 and stored in the third storage unit 400. If the input values are already stored in the third storage unit 400, they are read from the third storage unit 400 and input. In the upper row, "8000" m is entered for "Total Winding Length", "50" m for "First Sheet", "0.2" % for "Second Sheet a=", and "20" m for "Second Sheet b=". In the lower row, for the "Label Position" in the column, "7000" m, "5000" m, "3000" m, and "1000" m are entered in order from "1" (first sheet) to "4" (fourth sheet) of the "No." in the row. The "7000" m in the row of "No." "1" (first sheet) means it is located 1000 m away from "Winding Up" as shown in the developed view in the lower row.

[0052] In the column of "Process No", similarly, "1", "2", "2", "1" are entered in order. "1" means the "First Pre-Process 31" of the previous process 30, and "2" means the "Second Pre-Process 32". In the column of "Removal Distance", all are entered as "10" m. For the "Distance to Label" of "No.1", "1000" m is input. Since the "Total Winding Length" is "8000" m and the "Label Position" of "No.1" is "7000" m, "8000" m minus "7000" m is subtracted. The subtraction is executed by the control device 140 in FIG. 7. For "No.3" and "No.4", the "Distance to Label" remains blank. Similarly, for the "Distance to Label" of "No.2", "3000" m is input. For the "Distance before Stop (Set Value)" of "No.1", the set value of "50" m for the "first sheet" is input. Similarly, for the "Distance before Stop (Set Value)" of "No.2", "50" m is input. For "No.3" and "No.4", the "Distance before Stop (Set Value)" remains blank.

[0053] (When removing the defective part of "No.1" shown in FIG. 12) FIG. 12 shows when advancing "1000 m" and removing the defective part of "No.1". Since the traveling distance is "1000 m", the "Distance to Label" of "No.1" is subtracted by "1000 m" and changes to "0 m". The subtraction is executed by the control device 140 in FIG. 7. When "○" is input to the "Removal Completed" of "No.1", the "Distance to Label" of "No.2" is subtracted by the traveling distance "1000 m" and the "Removal Distance" of "10 m" from "3000 m" and changes to "1990 m". The subtraction of the "10 m" of the "Removal Distance" is executed by the removal distance subtraction unit 450 in FIG. 7. At this time, "5990" m is input to the "Distance to Label" of "No.4". The "Distance to Label" of "No.4" is "7000" m, but the traveling distance "1000 m" and the "Removal Distance" of "10 m" are subtracted. "32" m is input to the "Distance before Stop (Set Value)" of "No.4". The "Distance before Stop" is calculated by the creep / stop before distance calculation unit 460 in FIG. 7. At this time, for the "error correction coefficient a", "0.2" % of "a = on the second sheet" is used, and for the "minimum stopping distance b", "20" m of "b = on the second sheet" is used respectively.

[0054] (When removing the defective part of "No.2" shown in Fig. 13) Fig. 12 shows the situation when advancing 2000 m and removing the defective part of "No.2". Since the advancing distance is 2000 m, the "distance to the label" of "No.2" changes from 1990 m to 0 m after being subtracted. When "○" is input for the "removal completion" of "No.2", "1980 m" is input for the "distance to the label" of "No.3". Since the "distance to the label" of "No.3" is 5000 m, the first advancing distance of 1000 m, the second advancing distance of 2000 m, and the "removal distances" of 10 m and 10 m for "No.1" and "No.2" (total 3020 m) are subtracted. "24 m" is input for the "distance before stop (set value)" of "No.3". It is calculated by the creep / stop distance calculation unit 460 in Fig. 7 of "No.3". The "distance to the label" of "No.4" changes from 5990 m to 3980 m. The "distance to the label" of "No.4" is subtracted by the advancing distance of 2000 m and the "removal distance" of 10 m for "No.2" (total 2010 m) from 5990 m.

[0055] (When removing the defective part of "No.3" shown in Fig. 14) Fig. 14 shows the situation when advancing 2000 m and removing the defective part of "No.3". The "distance to the label" of "No.3" changes from 1980 m to 0 m after being subtracted. When "○" is input for the "removal completion" of "No.3", the "distance to the label" of "No.4" changes from 3980 m to 1970 m. The "distance to the label" of "No.4" is subtracted by the advancing distance of 2000 m and the "removal distance" of 10 m for "No.3" (total 2010 m) from 3980 m.

[0056] (Shown in Fig. 15, when the removal of the defective part of "No. 3" is completed) Fig. 15 shows the situation when moving forward 2000 m and removing the defective part of "No. 4". The "distance to label" of "No. 4" changes from "1970 m" to "0 m" after subtraction. After removing the defective part of "No. 4" and inputting "○" in the "removal completed" input field of "No. 4", the "distance to label (m)" of "No. 1 - 4" all becomes "0", and the defective part removal process 20 is completed.

[0057] (Explanation of the display screen of the display device 190 shown in Fig. 16) Fig. 16 is an example of the display screen of the display device 190, which is controlled by the control device 140 in Fig. 17. On the left side of the screen in Fig. 16, there is an arrangement similar to the table arranged in the lower part described above with reference to Figs. 10 - 15. In the upper right part of the screen, there is an arrangement similar to the table arranged in the upper part described above with reference to Figs. 10 - 15. In the lower right part of the screen, various operation icons are arranged. Regarding the reference label (not shown), icons for "yes" and "no" are arranged so that they can be selectively selected. Next to the right, regarding "control at label arrival", icons for "slow down" and "stop" are arranged so that they can be selectively selected. Below, an icon for "label position input all clear" is arranged.

[0058] (Explanation of the chart shown in Fig. 19) Fig. 19 is an example of a table for explaining the relationship between the distance between labels (m) and the distance Z (m) before slow down / stop. In the table, "n" is located in the row, indicating the number of defective labels 60. In the column, Y (m) and Z (m) are located. The error correction coefficient a (%) in formula (1) is calculated using 0.2% and the minimum stop distance b (m, b = 15 m). (Explanation of the graph shown in Fig. 20) Figure 20 is an example of graphing the table shown in Figure 19.

[0059] (Explanation of the graphs shown in Figures 21 and 22) Figures 21 and 22 each show a graph explaining the relationship between the distance X1-2, Y1-2 (m) between labels and the error from the actual distance at stop. In the graph shown in Figure 21, the diamond points indicate the "conventional specification". The conventional specification is a specification for stopping the defective label 60 based on the distance from the hoisting. The square points indicate the "new specification", that is, an example of the embodiment of the present invention. The new specification is a specification for stopping the defective label 60 based on the distance between adjacent defective labels 60 in the same previous process 30. The error from the actual distance at stop of the new specification is "average 2.8 m" per piece. Figure 22 is another example of a graph, and the error from the actual distance at stop is "average 13.7 m" per piece.

[0060] (Explanation of the developed view of the sheet body 40 in each process shown in Figure 1) Figure 1 is a developed view of the sheet body 40 in each process. In the same figure, (a) is the SL process, (b) is the DL process, and (c) is the ST process. For each process, the raw roll unwinding removal is being carried out. The total amount of raw roll unwinding removal for each process increases cumulatively as the process progresses. Therefore, generally, the total amount of raw roll unwinding removal increases as the number of previous processes 30 increases.

[0061] (Explanation of the graph shown in Figure 23(a)) Figure 23(a) is a graph for explaining an example of the error between SL-DL labels. The error between SL-DL labels is affected by the raw roll unwinding removal and is dispersed into "positive" and "negative" values.

[0062] (Explanation of the chart shown in Figure 23(b)) Figure 23(b) is a chart explaining the average error and variation between SL-DL labels. The number N is the number of defective labels 60, which is "10" pieces, the average error (m) is "1.5 m", and the variation (σ) is "23.6". (Explanation of the developed view of the sheet body in the ST process shown in FIG. 24) FIG. 24 is a developed view of the sheet body in the ST process. "X" indicates the positional relationship of the defective label 60 in the ST process, and "Y" indicates the positional relationship of the defective label 60 in the second previous process 32.

[0063] (Explanation of the chart shown in FIG. 25) FIG. 25 is a chart explaining the accuracy of the forwarding position information to the ST process. The position information is as shown by the symbols in FIG. 24. (1) The position information T1 is the distance from the winding-up to the core. (2) The position information X1 is the distance from the end of the winding-up to the first SL1 (midpoint). The defective label 60 marked with "SL" is the one applied in the ST process. In the ST process, as shown in FIG. 1, the first raw roll winding-up removal is carried out. (3) The position information X1 is the distance from the end of the winding-up to the second SL2 (midpoint). (4) The position information X1-2 is the distance from the first SL1 to the second SL2 (each midpoint).

[0064] (5) The position information Y1 is the distance from the end of the winding-up to the first DL1 (midpoint). The defective label 60 marked with "DL" is the one applied in the DL process. In the DL process, as shown in FIG. 1, the second raw roll winding-up removal is carried out. (6) The position information Y1 is the distance from the end of the winding-up to the second DL2 (midpoint). (7) The position information Y1-2 is the distance from the first DL1 to the second DL2 (each midpoint).

[0065] (8) The position information Z1 is the distance from the end of the winding-up to the first DL1 (end on the core side). (9) The position information Z2 is the distance from the first DL1 to the second DL2 (each end on the core side). (10) The position information Z3 is the distance from the second DL2 to the third DL3 (each end on the core side). (11) The position information Z4 is the distance from the third DL3 to the fourth DL4 (each end on the core side).

[0066] (Explanation of the process in Fig. 26) The defective part removal method includes, as shown in Fig. 26, (1) a code reading process S10, (2) a slow travel / stop selection process S11, (3) a label interval distance calculation process S12, (4) a stop control process S13, (5) a slow travel control process S14, (6) a removal distance subtraction process S15, and (7) a slow travel / stop pre-distance calculation process S16. Note that (1) to (7) will be described below. (Code reading process S10) The code reading process S10 is a process of converting the position information of the defective part into a barcode 51 in the previous process 30, displaying the converted barcode 51 on the sorting card 50 and attaching it to the sheet body 40, and reading the barcode 51 displayed on the sorting card 50 in the process of removing the defective part (for example, the defective part removal process 20) after the previous process 30 ends. Specifically, as shown in Fig. 7, the code reading process S10 is executed by the code decoding unit 470.

[0067] (Slow travel / stop selection process S11) The slow travel / stop selection process S11 is a process that can select the stop control process S13 or the slow travel control process S14. Specifically, as shown in Fig. 7, the slow travel / stop selection process S11 is executed by the slow travel / stop selection unit 440. (Label interval distance calculation process S12) The label - to - label distance calculation step S12 calculates the distances between the first defective label SL1, DL1 and the second defective label SL2, DL2, where the first defective label SL1, DL1 is the one closest to the upper winding end of the sheet body 40 among the defective labels 60 given in the same previous step 30, and the second defective label SL2, DL2 is the next closest one, and these distances are defined as the label - to - label distances X1 - 2, Y1 - 2. Specifically, as shown in FIG. 7, the label - to - label distance calculation step S12 is executed by the label - to - label distance calculation unit 410.

[0068] (Stop control step S13) The stop control step S13 is a step of stopping the sheet body 40 based on the label - to - label distances X1 - 2, Y1 - 2 calculated in the label - to - label distance calculation step S12. Specifically, as shown in FIG. 7, the stop control step S13 is executed by the stop control unit 420. (Slow - down control step S14) The slow - down control step S14 is a step of causing the sheet body 40 to perform a slow - down operation based on the label - to - label distances X1 - 2, Y1 - 2 calculated in the label - to - label distance calculation step S12. Specifically, as shown in FIG. 7, the slow - down control step S14 is executed by the slow - down control unit 430.

[0069] (Removal distance subtraction step S15) The removal distance subtraction step S15 is a step of subtracting the removal distance from the label - to - label distances X1 - 2, Y1 - 2 calculated in the label - to - label distance calculation step S12, where the position information of the defective part includes the removal distance of the defective part continuous with the defective label 60. Specifically, as shown in FIG. 7, the removal distance subtraction step S15 is executed by the removal distance subtraction unit 450. (Slow - down / stop pre - distance calculation step S16) In the slow - down / stop pre - distance calculation step S16, an error correction coefficient a (%) for the label - to - label distance (m) and the minimum stop distance b (m) of the sheet body 40 are set in advance. Based on the label - to - label distances X1 - 2, Y1 - 2 calculated in the label - to - label distance calculation step S12, the slow - down / stop pre - distance Z (m) until the second and subsequent defective labels SL2, DL2 are slow - down / stopped is calculated using the following formula (1) in step S16. Z = aY + b ··· Formula (1) -10 ≤ a ≤ 10 0 ≤ b ≤ 99 Specifically, as shown in FIG. 7, the creeping / stop pre-distance calculation step S16 is executed by the creeping / stop pre-distance calculation unit 460.

[0070] (Features and Effects of Embodiments According to the Present Invention) The features of the embodiments according to the present invention are as follows. (First Feature Point) The first feature point is a method for removing defective portions of the sheet body 40 that can handle defective portions caused by a plurality of previous steps. The roll-shaped sheet body 40 is wound up, and based on the position information of the defective portions in the sheet body 40 obtained in the previous step 30, the winding is temporarily stopped in front of each defective portion, and a method for removing the portion including the defective portion in the sheet body 40 from the sheet body 40. The previous step 30 has a plurality of steps, and each defective portion caused by each previous step 30 is respectively provided with a defective label 60. A second label detection device 130 for detecting the defective label 60, and among the defective labels 60 given in the same previous step 30, the defective label 60 closest to the upper winding end of the sheet body 40 is regarded as the first one, and the next closest defective label 60 is regarded as the second one. A label distance calculation step S12 for calculating the distance between the first defective label SL1, DL1 and the second defective label SL2, DL2 as the label distance X1-2, Y1-2, and a stop control step S13 for stopping the sheet body 40 based on the label distances X1-2, Y1-2 calculated by the label distance calculation step S12.

[0071] (Effect of the First Feature Point) According to the first feature point, the accuracy of the stop control of the sheet body 40 can be improved by temporarily stopping the second and subsequent defective labels SL2, DL2 based on the distance between adjacent defective labels 60 in the same previous step 30. (Second Feature Point) The second characteristic point is a defective part removal method, and includes a creep control step S14 of causing the sheet body 40 to run at a slow speed based on the inter-label distances X1-2 and Y1-2 calculated in the inter-label distance calculation step S12, and a creep / stop selection step S11 that can select the stop control step S13 or the creep control step S14. (Effect of the second characteristic point) According to the second characteristic point, stop control and creep control can be selected.

[0072] (The third characteristic point) The third characteristic point is a defective part removal method, includes the position information of the defective part including the removal distance of the defective part continuous with the defective label 60, and a removal distance subtraction step of subtracting the removal distance from the inter-label distances X1-2 and Y1-2 calculated in the inter-label distance calculation step S12. (Effect of the third characteristic point) According to the third characteristic point, by subtracting the removal distance from the inter-label distances X1-2 and Y1-2, the position accuracy of stop control and creep control can be improved.

[0073] (The fourth characteristic point) The fourth characteristic point is a defective part removal method, in which an error correction coefficient a (%) with respect to the inter-label distance (m) and a minimum stop distance b (m) of the sheet body 40 are preset in advance, and based on the inter-label distances X1-2 and Y1-2 calculated by the inter-label distance calculation step S12, a pre-creep / stop distance Z (m) until the second and subsequent defective labels SL2 and DL2 are caused to creep / stop is calculated using the following formula (1) in a pre-creep / stop distance calculation step S16. Z = aY + b ··· Formula (1) -10 ≦ a ≦ 10 0 ≦ b ≦ 99 (Effect of the fourth characteristic point) According to the fourth characteristic point, by correcting the inter-label distances X1-2 and Y1-2 using the error correction coefficient a and the minimum stop distance b, the influence of measurement errors such as an encoder (for example, the second conveyance amount measurement unit 211B shown in FIG. 4) in the previous step 30 can be reduced, and the position accuracy of stop control and creep control can be improved.

[0074] (Fifth feature point) The fifth feature point is a defective part removal method. In the previous step 30, the position information of the defective part is converted into a barcode 51, and the converted barcode 51 is displayed on the sorting card 50 and attached to the sheet body 40. After the previous step 30 is completed, in the step of removing the defective part (for example, the defective part removal step 20), it includes a code reading step S10 of reading the barcode 51 displayed on the sorting card 50. (Effect of the fifth feature point) According to the fifth feature point, by using the barcode 51, the defective position information sent from the previous step 30 can be quickly and accurately captured in the step of removing the defective part (for example, the defective part removal step 20).

[0075] (Sixth feature point) The sixth feature point is a winding device 100, which winds up the roll-shaped sheet body 40 and can temporarily stop winding before each defective part based on the position information of the defective part on the sheet body 40 obtained in the previous step 30. There are multiple previous steps 30, and each defective part caused by each previous step 30 is respectively provided with a defective label 60. In the temporarily stopped state of the sheet body 40 by the winding device 100, the part including the defective part on the sheet body 40 can be removed from the sheet body 40. The winding device 100 includes a second label detection device 130 for detecting the defective label 60, and among the defective labels 60 given in the same previous step 30, taking the defective label 60 closest to the upper winding end of the sheet body 40 as the first one, the next closest defective label 60 as the second one, and calculating the distance between the first defective label SL1, DL1 and the second defective label SL2, DL2 as the label-to-label distance X1-2, Y1-2, and a stop control unit 420 for stopping the sheet body 40 based on the label-to-label distances X1-2, Y1-2 calculated by the label-to-label distance calculation unit 410. (Effect of the sixth feature point) According to the sixth feature point, based on the distance between adjacent defective labels 60 in the same previous step 30, by temporarily stopping the second and subsequent defective labels SL2, DL2, the accuracy of the stop control of the sheet body 40 can be improved.

[0076] (The 7th feature point) The 7th feature point is the winding device 100, and the winding device 100 is provided with a creep control unit 430 for slowly driving the sheet body 40 based on the label interval distances X1-2 and Y1-2 calculated by the label interval distance calculation unit 410, and a creep / stop selection unit 440 capable of selecting the stop control unit 420 or the creep control unit 430. (Effect of the 7th feature point) According to the 7th feature point, stop control and creep control can be selected.

[0077] (The 8th feature point) The 8th feature point is the winding device 100, and the position information of the defective part includes the removal distance of the defective part continuous with the defective label 60. The winding device 100 is provided with a removal distance subtraction unit 450 for subtracting the removal distance from the label interval distances X1-2 and Y1-2 calculated by the label interval distance calculation unit 410. (Effect of the 8th feature point) According to the 8th feature point, by subtracting the removal distance from the label interval distances X1-2 and Y1-2, the position accuracy of stop control and creep control can be improved.

[0078] (The 9th feature point) The 9th feature point is the winding device 100, and the winding device 100 is provided with a third storage unit 400 capable of presetting and storing an error correction coefficient a (%) with respect to the label interval distance (m) and a minimum stop distance b (m) of the sheet body 40, and a creep / stop before distance calculation unit that reads out the error correction coefficient a stored in the third storage unit 400 and the minimum stop distance b of the sheet body 40, and calculates the creep / stop before distance Z (m) until the second and subsequent defective labels SL2 and DL2 are slowly driven / stopped based on the label interval distances X1-2 and Y1-2Y calculated by the stop before distance calculation unit using the following formula (2). Z = aY + b ··· Formula (2) -10 ≦ a ≦ 10 0 ≦ b ≦ 99

[0079] (Effect of the 9th feature point) According to the ninth feature point, by correcting the label-to-label distances X1-2 and Y1-2 using the error correction coefficient and the minimum stop distance, the influence of measurement errors in the previous process 30, such as those of an encoder (for example, the second conveyance amount measurement unit 211B shown in FIG. 4), can be reduced, and the position accuracy of stop control and creep control can be improved.

Explanation of Signs

[0080] 10 Defect removal system 20 Defect removal process 30 Previous process 31 First previous process 32 Second previous process 40 Sheet body 41 Original web 50 Sorting card 51 Barcode 60 Defective label SL1 First defective label SL2 Second defective label SL3 Third defective label SL4 Fourth defective label DL1 First defective label DL2 Second defective label 100 Rewinding device 110 Conveyor path 120 Working position 130 Second label detection device 131 First sensor 132 Second sensor 140 Control device 150 Second conveyance amount measurement unit 160 Input unit 170 Code reader 180 Slitter device 190 Display device 200 Printing device 210 Defect detection device 211A Image processing unit 211Aa Imaging unit 211Ab Defect detection unit 211B Second conveyance amount measurement unit 220 First labeller 230 First defect processing controller 240 First storage unit 250 First take-up machine 300 Laminating device 310 Defect detection device 320 Second labeller 330 Second defect processing controller 330A Reference label processing unit 340 Second storage unit 350 Second take-up machine 360 First label detection device 400 Third storage unit 410 Label interval calculation unit 420 Stop control unit 430 Creeping control unit 440 Creeping / stop selection unit 450 Removal distance subtraction unit 460 Creeping / stop pre-distance calculation unit 470 Code decoding unit S10 Code reading step S11 Creeping / stop selection step S12 Label interval calculation step S13 Stop control step S14 Creeping control step S15 Removal distance subtraction step S16 Creeping / stop pre-distance calculation P1 Starting point of working position P2 Stop position P3 Creeping start position L1 Predetermined distance T1 Acceleration period T2 Normal period T3 Principle period T4 Creeping period T5 Pre-creeping deceleration period T10 Pre-stop deceleration period X1-2 Label interval Y1-2 Label interval

Claims

1. A method for removing defective portions, which winds a roll-shaped sheet body, temporarily stops winding before each defective portion based on the position information of the defective portions in the sheet body obtained in the previous process, and removes the portion including the defective portion in the sheet body from the sheet body, wherein there are a plurality of the previous processes, and a defective label is respectively assigned to each defective portion caused by each previous process, a label detection device for detecting the defective label, among the defective labels assigned in the same previous process, the defective label closest to the upper end of the wound sheet body is regarded as the first one, the next closest defective label is regarded as the second one, and a label distance calculation step of calculating the distance between the first defective label and the second defective label as the label distance, a stop control step of stopping the sheet body based on the label distance calculated in the label distance calculation step, A method for removing defective portions of a sheet body capable of coping with defective portions caused by a plurality of previous processes, characterized by comprising the above.

2. A creep control step of causing the sheet body to creep based on the label distance calculated in the label distance calculation step, a creep / stop selection step capable of selecting the stop control step or the creep control step, A method for removing defective portions of a sheet body capable of coping with defective portions caused by a plurality of previous processes according to claim 1, characterized by comprising the above.

3. The position information of the defective portion includes the removal distance of the defective portion continuous with the defective label, A method for removing defective portions of a sheet body capable of coping with defective portions caused by a plurality of previous processes according to claim 1 or claim 2, characterized by comprising a removal distance subtraction step of subtracting the removal distance from the label distance calculated in the label distance calculation step.

4. An error correction coefficient a (%) with respect to the label distance Y (m) and a minimum stop distance b (m) of the sheet body are preset in advance, A method for removing defective portions of a sheet body capable of coping with defective portions caused by a plurality of previous processes according to claim 2, characterized by comprising a pre-creep / stop distance calculation step of calculating a pre-creep / stop distance Z (m) until the second and subsequent defective labels are creeped / stopped based on the label distance Y (m) calculated in the label distance calculation step using the following formula (1). Z = aY + b... Formula (1) -10 ≤ a ≤ 10 0 ≤ b ≤ 99

5. In the previous process, the position information of the defective part is converted into a barcode, and the converted barcode is displayed on a sorting card and attached to the sheet body. After the completion of the previous process, in the process of removing the defective part, it is characterized by comprising a code reading process of reading the barcode displayed on the sorting card, which is a method for removing defective parts of a sheet body capable of coping with defective parts caused by a plurality of previous processes according to any one of claims 1 to 4.

6. A winding device that winds up a roll-shaped sheet body and can temporarily stop winding before each defective part based on the position information of the defective parts in the sheet body obtained in the previous process. There are a plurality of the previous processes, and each defective part caused by each previous process is respectively provided with a defective label. In the temporarily stopped state of the sheet body by the winding device, the part including the defective part in the sheet body can be removed from the sheet body. The winding device includes A label detection device for detecting the defective label, Among the defective labels given in the same previous process, the defective label closest to the upper end of the winding of the sheet body is regarded as the first one, the next closest defective label is regarded as the second one, and the distance between the first defective label and the second defective label is calculated as the label interval distance. A stop control unit for stopping the sheet body based on the label interval distance calculated by the label interval distance calculation unit. A winding device characterized by comprising.

7. The winding device includes A creep control unit for causing the sheet body to run at a creep based on the label interval distance calculated by the label interval distance calculation unit, A creep / stop selection unit capable of selecting the stop control unit or the creep control unit. The winding device according to claim 6, characterized by comprising.

8. The position information of the defective part includes the removal distance of the defective part continuous with the defective label. The winding device includes A removal distance subtraction unit for subtracting the removal distance from the label interval distance calculated by the label interval distance calculation unit, which is a winding device according to claim 6 or claim 7, characterized by comprising.

9. The winding device includes A storage unit capable of presetting and storing an error correction coefficient a (%) with respect to the label interval distance Y (m) and a minimum stop distance b (m) of the sheet body. Read out the error correction coefficient a and the minimum stop distance b stored in the memory unit, and based on the label-to-label distance Y calculated by the pre-stop distance calculation unit, calculate the pre-creeping / stopping distance Z (m) until the defective labels from the second sheet onwards are made to creep and stop using the following formula (2): a pre-creeping / stopping distance calculation unit, The take-up device according to claim 7, characterized by comprising Z = aY + b... Formula (2) -10 ≤ a ≤ 10 0 ≤ b ≤ 99

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