JP2023038809A - Method for removing defective part of sheet body capable of addressing defective part due to plural processes and winding device - Google Patents

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

The present invention relates to a defective portion removing process for winding a roll-shaped sheet body (hereinafter also referred to as "original fabric"), temporarily stopping winding at a defective portion, and removing the defective portion from the original roll. The present invention relates to a technique for removing a defective portion from a roll-shaped sheet based on positional information of the defective portion obtained in a previous process.

2. Description of the Related Art A defective portion removing process for removing defective portions from a roll-shaped sheet body such as a raw film for packaging is performed using, for example, a machine called a slitter device. The slitter device executes an operation process for winding a roll-shaped sheet, detects a defective portion in the sheet during winding, and suspends the operation process for winding. During the temporary stop, the operator cuts the front and rear portions including the defective portion from the sheet body to remove the defective portion from the sheet body, and rejoins the sheet members at the cutting position. After the rejoining process of the sheet body is completed, the winding process is restarted by the operation of the operator. By repeating this, a plurality of defective spots existing on the original fabric are removed.

In general, a label (tape or the like) is attached to a defective position existing on a sheet body in a process prior to a defective portion removing process (slitter process) using a slitter (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 pre-process is, for example, a printing process for printing on the sheet, and the defect is, for example, a printing mistake or a flaw in the sheet itself.
Labeling to the position of the defective portion (hereinafter also referred to as “defective position”) is performed by, for example, winding up the raw material, performing the printing process, and before re-winding it. Such defects are detected, and labels are automatically attached to the detected defects.

In addition, the defect position information of the defect positions labeled in the previous process is also acquired. The positional information of the defective portion is obtained by measuring the rewinding length up to each defective position with a measuring unit (such as an encoder), as in Patent Document 1. In this way, the defective position of each defective portion is defined by the winding length from the start of measurement on the core side of roll winding to the defective position.
In Patent Document 1, each defect position information acquired in the previous process is converted into a length up to each defect position with reference to the position on the winding start side (winding outside) of the original roll in the defect point removal process. Then, according to each defective position information after conversion, it is rewound by the amount corresponding to the winding amount from the winding start to each defective position. In the meantime, the operator has performed removal processing and rejoining processing of the defective portion.

JP-A-3-45345

As described above, in the defective portion removing step, the position of the defective portion is detected based on the label attached to the sheet body during winding of the raw material, and the winding is stopped.
Here, the winding operation of the raw material in the slitter device is performed at high speed rotation operation from the viewpoint of work efficiency. Therefore, in order to reliably stop winding at the next defective position (label position), it is necessary to reduce the winding speed at high speed before the defective position, switch to slow operation, and during slow operation, By checking the label, it is possible to reliably stop winding at a defective portion.

At this time, if the reference position for starting winding is deviated, the accuracy of each defect position information is deteriorated. By sequentially estimating the position of the defective portion using the length to the position), it is possible to temporarily stop at the defective portion.
Here, when the winding is stopped at the position where the defective portion was detected in the previous process, the operator cuts the front and back including the defective portion with the cutter of the slitter device, and performs the rejoining process. As a result of the defective portion removing process, errors are included in the defective position information acquired in the preceding process for the positions of the subsequent defective portions, and the errors accumulate as the defective portion removing processing is repeated. In other words, the accumulation of errors increases as the number of defective portion removals increases.

For this reason, in order to prevent detection omission of a defective portion (passage of a defective position) due to omission of label detection, conventionally, the operation is switched to slow driving from, for example, 100 m before the next stop position scheduled based on the defective position information. Then, there is a problem that the longer the slow-running period is, the longer the time required for the defective portion removing process is.
For example, the operation is switched to slow-moving from 100m before. Temporarily speeding up the conveying speed manually is also executed as appropriate. However, the operator's work while visually monitoring the sheet body of 100 m leads to an increase in the burden on the operator.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the speed reduction loss in the defective portion removing process while suppressing the burden on the operator.

A defective portion removing method according to an aspect of the present invention includes winding a roll-shaped sheet body, and temporarily stopping the winding before each defective portion based on the positional information of the defective portion in the sheet body obtained in the previous step. and removing a portion of the sheet including the defective portion from the sheet, wherein there are a plurality of the preceding steps, and a defective label is attached to each defective portion caused by each preceding step. A label detection device for detecting the defective labels respectively applied, and among the defective labels applied in the same previous process, the defective label closest to the winding end of the sheet body is taken as the first sheet, and then an inter-label distance calculation step of calculating the distance between the first and second defective labels as the inter-label distance, and calculating the inter-label distance and a stop control step of stopping the sheet based on the inter-label distance calculated in the step.

Further, the method for removing a defective portion according to an aspect of the present invention includes a slow control step of slowing the sheet body based on the inter-label distance calculated in the inter-label distance calculation step, and the stop control step or the slow and a slow/stop selection step in which a control step can be selected.
In the defective portion removing method according to an aspect of the present invention, the positional information of the defective portion includes the removal distance of the defective portion that is continuous with the defective label, and the inter-label distance calculated in the inter-label distance calculating step. and a removal distance subtracting step of subtracting the removal distance from .

A method for removing a defective portion according to an aspect of the present invention presets an error correction coefficient a (%) with respect to the inter-label distance Y (m) and the minimum stopping distance b (m) of the sheet body, Based on the label-to-label distance Y (m) calculated in the label-to-label distance calculation step, the following formula (1 ) to calculate the distance before slowing down and stopping.
Z = aY + b Expression (1)
-10 ≤ a ≤ 10
0 ≤ b ≤ 99

In the method for removing a defective portion according to an aspect of the present invention, in the preceding step, the positional information of the defective portion is converted into a barcode, and the converted barcode is displayed on an arrangement card and attached to the sheet body. and, after the pre-process is completed, the step of removing the defective portion includes a code reading step of reading the bar code displayed on the sorting card.

A winding device according to an aspect of the present invention can wind a roll-shaped sheet and temporarily stop winding before each defective portion based on the positional information of the defective portion of the sheet obtained in the previous process. In the winding device, there are a plurality of the pre-processes, a defective label is attached to each defective portion caused by each pre-process, and the sheet is The part including the defective part in the sheet can be removed from the sheet body, and the winding device includes a label detection device for detecting the defective label and the defective label applied in the same previous process. Among them, the defective label closest to the winding top end of the sheet body is designated as the first sheet, and the next defective label is designated as the second sheet, and between the first defective label and the second defective label. as the inter-label distance, and a stop control unit that stops the sheet based on the inter-label distance calculated by the inter-label distance calculation unit. .

A winding device according to an aspect of the present invention includes a slow control unit that causes the winding device to slowly drive the sheet based on the inter-label distance calculated by the inter-label distance calculation unit, and the stop control unit. or a slow/stop selection unit that can select the slow control unit.
In the winding device according to an aspect of the present invention, the location information of the defective portion includes the removal distance of the defective portion that is continuous with the defective label, and the winding device includes the label-to-label distance calculation unit. and a removal distance subtracting unit for subtracting the removal distance from the inter-label distance.

In the winding device according to an aspect of the present invention, the winding device is provided with an error correction coefficient a (%) for the inter-label distance Y (m) and the minimum stopping distance b (m) of the sheet body in advance. A storage unit that can be set and stored, and the error correction coefficient a and the minimum stopping distance b stored in the storage unit are read, and based on the inter-label distance Y calculated by the pre-stop distance calculation unit, two labels are printed. and a distance-before-slow-and-stop calculating unit that calculates a distance before slow/stop Z (m) until the defective label after the second is slowed/stopped using the following equation (2). .
Z = aY + b Expression (2)
-10 ≤ a ≤ 10
0 ≤ b ≤ 99

According to one aspect of the present invention, by temporarily stopping the second and subsequent defective labels based on the distance between the adjacent defective labels in the same previous process, it is possible to improve the accuracy of sheet body stop control.

FIG. 4 is a developed view showing the relationship between a sheet body and a defective label in each process according to an embodiment based on the present invention, in which (a) is the SL process, (b) is the DL process, and (c) is the ST process. be. It is an explanatory view explaining the flow of a process concerning an embodiment based on the present invention. It is a schematic diagram explaining a 1st pre-process concerning embodiment based on this invention. FIG. 4 is a block diagram around a defect processing controller in a first pre-process according to an embodiment of the present invention; It is a schematic diagram explaining a 2nd pre-process concerning embodiment based on this invention. FIG. 4 is a developed view showing the relationship between the sheet body and the label according to the embodiment based on the present invention; FIG. 4 is a schematic diagram for explaining a defective portion removing process according to an embodiment based on the present invention; FIG. 4 is a developed view showing the relationship between a sheet body and a defective label according to an embodiment based on the present invention; It is a top view explaining a sort-out card concerning an embodiment based on the present invention. 4 is a chart showing the relationship between label position and distance to the label, according to an embodiment of the present invention; FIG. 11 is a table following FIG. 10 with a developed view showing the relationship between the sheet body and the defective label. FIG. 11 is a diagram following FIG. 11 at the time of removing the defective portion of the first sheet. FIG. 12 is a diagram following FIG. 12 at the time of removing defective portions on the second sheet. FIG. 13 is a diagram following FIG. 13 at the time of removing the defective portion on the third sheet. FIG. 14 is a diagram following FIG. 14 at the time of removing the defective portion on the fourth sheet. FIG. 4 is an explanatory diagram of an example of a display screen of a display device according to an embodiment based on the present invention; FIG. 2 is a block diagram illustrating a control device of the defective portion elimination system according to an embodiment of the present invention; It is an explanatory diagram for explaining the relationship between the winding length and the conveying speed according to the embodiment based on the present invention. It is a chart explaining the relation between the distance between labels and the distance before slowing down/stopping according to the embodiment based on the present invention. 20 is a graph corresponding to FIG. 19; It is a graph for explaining an example of the relationship between the conventional specification and the new specification according to the embodiment based on the present invention. FIG. 22 is a graph of another example corresponding to FIG. 21; FIG. 1(a) is a graph showing the error between SL-DL labels, and FIG. 1(b) is a chart explaining the average error and variation between SL-DL labels, according to an embodiment of the present invention. FIG. 4 is a developed view showing the relationship between the sheet body and the label in the ST process according to the embodiment based on the present invention; FIG. 25 is a chart for explaining FIG. 24; FIG. FIG. 4 is an explanatory diagram illustrating the flow of steps of a method for removing a defective portion according to an embodiment of the present invention;

(Characteristic points of embodiments based on the present invention)
The first point of the embodiment based on the present invention is that, as shown in FIGS. 24 and 25, the inter-label distances X1-2 and Y1-2 are used for temporarily stopping the second and subsequent defective labels 60. be.
The second point is that, as shown in FIG. 12, the positional information of the defective portion sent from the previous process 30 includes the removal distance of the defective portion continuous to the defective label 60, but after the defective portion is removed, the distance between the labels This is the point obtained by subtracting the removal distance from the distances X1-2 and Y1-2.
The third point is that the inter-label distances X1-2 and Y1-2 are corrected using the error correction coefficient a and the minimum stopping distance b of the sheet 40, as shown in FIG.
According to the first point, by using the inter-label distances X1-2 and Y1-2, as shown in FIG.
According to the second point, by subtracting the removal distance from the inter-label distances X1-2 and Y1-2, it is possible to improve the positional accuracy of stop control and slow control.
According to the third point, by correcting the inter-label distances X1-2 and Y1-2 using the error correction coefficient a and the minimum stopping distance b, the influence of measurement errors such as encoders in the previous process 30 can be reduced. It is possible to improve the positional accuracy of stop control and slow control.

(Description of an embodiment 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, a raw material 41 formed by rolling a long sheet 40 is roughly divided into pre-processes 30, as shown in FIG. A case in which each process of the defective part removing process 20 is executed in this order will be described as an example.
The pre-process 30 will be described by taking as an example a case where (1) a first pre-process 31 and (2) a second pre-process 32 are executed in this order.
The first pre-process 31 is also called "SL process" or "printing process", and the second pre-process 32 is also called "DL process" or "lamination process".

(First pre-process 31 (SL process, printing process))
In the first pre-process 31, as shown in FIG. 3, the roll-shaped sheet 40 is wound, the sheet 40 being conveyed is continuously printed by the printer 200, and the printed sheet is 40 is wound up by the first winder 250 to be made into a rolled material 41 again.

(Defect location information and labeling process)
In the first pre-process 31, as shown in FIG. , and a first defect handling controller 230 .
The defect detection device 210, the first labeler 220, and the first defect processing controller 230 continuously perform defect detection processing on the wound sheet 40, and label the position of the detected defect portion. In addition to obtaining the defect position information of the defect location, the process of storing it in the first storage unit 240 is executed.
Here, the labels are given LV1, LV2, and SL1 to SL4 as shown in FIG. LV1 and LV2 are also called "reference labels", and SL1 to SL4 are also called "defective labels 60" as shown in FIG.

(Defect detection device 210)
The defect detection device 210 includes an image processing section 211A and a second conveying amount measuring section 211B for measuring the conveying amount of the sheet member 40, as shown in FIG.
(Image processing unit 211A)
As shown in FIG. 4, the image processing unit 211A performs image processing on the image captured by the image capturing unit 211Aa, which captures images of the surface of the conveyed sheet 40 at predetermined sampling intervals, and and a defect detection unit 211Ab that determines by image processing whether or not there is a defect in the captured image. The defect detection section 211Ab outputs the detected defect detection signal to the first defect processing controller 230 .

(Second Conveyance Amount Measuring Unit 211B)
As shown in FIG. 4, the second conveying amount measuring section 211B measures the length of the conveyed sheet 40 at predetermined sampling intervals, and outputs measurement information to the first defect processing controller 230 . The second transport amount measurement unit 211B is also called an "encoder".
(First defect handling controller 230)
As shown in FIG. 4, the first defect processing controller 230 measures the distance from the measurement start position to the defect position based on the measurement information from the second conveying distance measurement unit 211B and the defect detection signal from the image processing unit 211A. In addition to outputting defect position information, which is information, to the first storage unit 240, each defect position is tracked, and each defect position reaches the first labeler 220 in synchronization with the first labeler. A labeling signal is provided to labeler 220 .

(first labeler 220)
When the first labeler 220 receives the labeling signal from the first defect processing controller 230, as shown in FIG. ˜SL4 (defective label 60 shown in FIG. 1A) is pasted.
(Second pre-process 32 (DL process, lamination process)
In the second pre-process 32, as shown in FIG. 5, the printed roll-shaped sheet 40 is continuously laminated on the unwound sheet 40 being transported by the laminating device 300. Execute the bonding process of the material. After the lamination process, the sheet body 40 is wound up by the second winder 350 to form the roll-shaped material 41 again.

(Defect location information and labeling process)
Also in the second pre-process 32, as in the first pre-process 31, as shown in FIG. 310, a second labeler 320, and a second defect handling controller 330 are provided. Labels DL1 and DL2 (defect label 60 shown in FIGS. 1(b) and 1(c)) are assigned to defective locations such as lamination defects, and defective position information consisting of the length from the measurement start position to the defective location. are calculated and sequentially stored in the second storage unit 340 .
Here, the labels DL1 and DL2 are hereinafter also referred to as "defective labels 60" as shown in FIGS. 1(b) and 1(c).
The defect detector 310 , the second labeler 320 , and the second defect processing controller 330 in the second pre-process 32 are the same as those provided in the first pre-process 31 .
However, the defect detector 310 also detects the labels SL1 to SL4 attached in the first pre-process 31. FIG. Further, 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 pasted in the first pre-process 31 . The first label detection device 360 is positioned between the defect detection device 310 and the second labeler 320 .
The second defect processing controller 330 also recalculates the label defect position information detected by the defect detection device 310 or the first label detection device 360 to update the information in the second storage unit 340 .

(Reference label processor 330A)
The second defect processing controller 330 includes a reference label processing section 330A, as shown in FIG.
The reference label processing unit 330A applies a reference label (not shown), which is a label for ending measurement and a label for removing defects, to the winding outer side (rolling outer side) of the sheet body 40, and Position information of the labeling position of the reference label is output to the second storage unit 340 .

(Defective part removal step 20)
After completion of the second pre-process 32, as shown in FIG. In addition, the defective part removal process 20 is also called "ST process" hereafter.
As shown in FIG. 7, the defect removal process 20 is mainly composed of the defect removal system 10. As shown in FIG.

(Defective part removing system 10)
As shown in FIG. 7, the defective part removal system 10 winds up a roll-shaped sheet body 40 that has undergone lamination processing, and uses the position information of the defective part in the sheet body 40 acquired in the previous process 30. Based on this, the winding is temporarily stopped before each defective portion, and the portion of the sheet body 40 including the defective portion is removed from the sheet body 40 .
The defective part removing system 10 includes (1) a winding device 100, (2) a conveying path 110, (3) a working position 120, (4) a second label detecting device 130, and (5) a second conveying amount measuring section. 150.
(1) to (5) will be described later.

(Winding device 100)
As shown in FIG. 7, the winding device 100 is positioned on the winding side of the original fabric 41 and winds up the sheet 40 set on the conveying path 110 .

(Conveyance path 110)
As shown in FIG. 7, the following positions are set in advance on the transport path 110 .
The following (1) to (3) will be described later.
(1) Base point P1 of working position 120
(2) Stop position P2
(3) Slow start position P3

(work position 120)
As shown in FIG. 7, the working position 120 is arranged in the middle of the conveying path 110 and performs the work of removing the portion including the defective portion of the sheet 40 conveyed along the conveying path 110 .

(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 the defective label 60 attached to the sheet 40 conveyed along the conveying path 110 .
As shown in FIG. 8, there are a plurality of second label detection devices 130, each of which consists of a first sensor 131 and a second sensor 132. As shown in FIG.
The first sensor 131 is arranged on the right side in FIG.
The second sensor 132 is arranged on the left side of the figure, and detects DL1 and DL2 among the defective labels 60 .

(Second Conveyance Amount Measuring Unit 150)
The second conveying amount measuring unit 150 is for measuring the conveying amount of the sheet 40 conveyed on the conveying path 110, and is composed of, for example, a yard meter. Note that the second transport amount measuring unit 150 is also called an "encoder".

(Base point P1 of working position 120)
The base point P1 is set at the starting point of the working position 120, as shown in FIG.
(Stop position P2)
As shown in FIG. 7, the stop position P2 is set a predetermined distance L1 (for example, 2 m) ahead of the base point P1 of the working position 120 . The stop position P2 is a position at which the conveyance of the sheet 40 is stopped when the defective label 60 is positioned there.

(Slow starting position P3)
As shown in FIG. 7, the slow start position P3 is located a predetermined distance (not shown) from the work position P1, that is, further before the stop position P2. As shown in FIG. 18, the slow start position P3 is a position where the slow operation is performed at a slow speed lower than the normal conveying speed of the sheet 40 when the defective label 60 is positioned at the Z position.

(control device 140)
The defect removal system 10 includes a controller 140 as shown in FIG.
Although not shown, the control device 140 is configured mainly by a CPU, and is configured by a microcomputer equipped with a ROM, a RAM, an I/O port, and the like. The CPU functions as each of the units 400 to 470 by reading various programs and data stored in the ROM, HDD, or the like.
As shown in FIG. 17, the control device 140 includes (1) a third storage unit 400, (2) an inter-label distance calculation unit 410, (3) a stop control unit 420, (4) a slow control unit 430, ( 5) a slow/stop selecting unit 440; (6) a removal distance subtracting unit 450; (7) a slow/stop distance computing unit 460; (1) to (8) will be described later.

As shown in FIG. 17, the control device 140 includes (1) a second conveying amount measuring section 150, (2) a second label detecting device 130, (3) an input section 160, and (4) at the input stage. A code reader 170 is connected to each.
(3) and (4) will be described later.
Further, (5) the winding device 100, (6) the slitter device 180, and (7) the display device 190 are connected to the output stage of the control device 140, respectively.
(6) and (7) will be described later.

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

(Code reader 170)
The code reader 170 is for reading the bar code 51 displayed on the sorting card 50 (see FIG. 9).

(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 is not limited to cutting defective portions, and may include a roll processing machine that cuts (slits) the sheet body 40 in an arbitrary width in the longitudinal direction and at the same time rewinds it into a roll.

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

(Third storage unit 400)
As shown in FIG. 17, the third storage section 400 can store various types of information input via the input section 160 and code reader 170 connected to the control device 140 .
One of the various types of information includes information submitted from the previous process 30 (including location information of the defective portion).
In addition, the third storage unit 400 includes the error correction coefficient a (%) for the inter-label distance (m) and the minimum stopping distance b (m) of the sheet body 40 preset through the input unit 160. .
(Inter-label distance calculator 410)
Among the defective labels 60 applied in the same pre-process 30, the inter-label distance calculating unit 410 regards the defective label 60 closest to the winding end of the sheet body 40 as the first sheet, and the next closest defective label 60. The distances between the first defective labels SL1 and DL1 and the second defective labels SL2 and DL2 are calculated as the inter-label distances X1-2 and Y1-2.

(Stop control unit 420)
The stop controller 420 is for stopping the sheet 40 based on the inter-label distances X1-2 and Y1-2 calculated by the inter-label distance calculator 410. FIG. As shown in FIG. 17 , the stop control unit 420 controls the driving of the winding device 100 connected to the control device 140 to control the stop of the sheet 40 . The stop control unit 420 basically stops driving the winding device 100 and stops the sheet body 40 when the inter-label distances X1-2 and Y1-2 become "0" m.

(Slow control unit 430)
The slow control section 430 is for slowly driving the sheet body 40 based on the inter-label distances X1-2 and Y1-2 calculated by the inter-label distance calculation section 410. FIG. Similar to the stop control unit 420 , the slow control unit 430 controls driving of the winding device 100 to cause the sheet body 40 to operate slowly as shown in FIG. 18 .

(Slow down/stop selection unit 440)
The slow/stop selection unit 440 can select the stop control unit 420 or the slow control unit 430 . As shown in FIG. 17 , the slow/stop selection unit 440 executes selection by operation from the input unit 160 connected to the control device 140 . Specifically, the selection is made by operating the switches "slow" and "stop" shown in FIG.

(Removal distance subtraction unit 450)
The removal distance subtracting section 450 subtracts the removal distance from the inter-label distances X1-2 and Y1-2 calculated by the inter-label distance calculating section 410. FIG.

(Slow down/pre-stop distance calculation unit 460)
The slow/pre-stop distance calculation unit 460 calculates the slow/pre-stop distance Z (m) until the second and subsequent defective labels SL2 and DL2 are slowed/stopped using the following equation (1). is.
Z = aY + b Expression (1)
“Y” means “inter-label distance” and is calculated by the inter-label distance calculator 410 .
"a" means an "error correction coefficient" for the distance between labels, and is displayed using "%", for example. The error correction coefficient a is set in advance, 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 may take a "positive" value as well as a "negative" value.
-10 ≤ a ≤ 10
"b" means the "minimum stopping distance" of the seat body 40, and is displayed using, for example, "m". The minimum stopping distance b is set in advance, stored in the third storage unit 400 and read from the third storage unit 400 . The minimum stopping distance b is set within the following range.
0 ≤ b ≤ 99
The error correction coefficient a and the minimum stopping distance b can be obtained by grasping the tendency of the encoder error between the previous process 30 and the defect removal process 20 .

(Code decoding unit 470)
The code decoding section 470 decodes the bar code read via the code reader 170 connected to the control device 140, as shown in FIG. After decoding, the code decoding section 470 extracts the report information (including the position information of the defective portion) from the previous process 30 and stores it in the third storage section 400 .

(Description 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. FIG.
(Before the input shown in FIG. 10)
FIG. 10 shows the state before input.
In the upper row, columns of "total winding length", "1st sheet (m)", "2nd sheet a=(%)", and "2nd sheet b=(m)" are arranged. The “total winding length” means the “total winding length” of the raw fabric 41 . "1st sheet (m)" means the minimum stopping distance applied to the "1st sheet" of defective labels SL1 and DL1. "Second sheet a=(%)" means the error correction coefficient a applied to the defective labels SL2 and DL2 on and after the "second sheet.""2nd sheet b=(m)" means the minimum stopping distance b applied to the defective labels SL2, DL2 after the "2nd sheet".
The lower part is a table format, "No.", "Removal completed", "Label position (m)", "Process No.", "Removal distance (m)", "Distance to label (m)", " Each column of "distance before stopping (set value)" is arranged.
Here, the “removal distance” means the distance of the defect location that continues from the defect label 60 . The "removal distance" may be displayed as, for example, the "removal number" or the "removal amount".
Also called "removal distance".
Numbers from "1 to 10" are written in the rows of the "No." column. The number means the “number of sheets” of the defective label 60 .

(Shown in Fig. 11, after input (at the time of setting))
Input values at the time of setting are input to FIG. Input values are input to the control device 140 by the input unit 160 or the code reader 170 in FIG. 17 and stored in the third storage unit 400 . If the input value is already stored in the third storage unit 400, it is read out from the third storage unit 400 and input.
In the upper row, "8000" m for "total winding length", "50" m for "1st sheet", "0.2"% for "2nd sheet a =", "2nd sheet b =" for "20"m is entered.
In the lower part, in the "label position" of the column, "7000" m, "5000" m, "1" (first sheet) to "4" (fourth sheet) of "No.""3000" m and "1000" m are input in order.
"7000" m in the row of "1" (first sheet) of "No." means that it is located "1000" m away from "winding up" as shown in the development view at the bottom.

Similarly, "1", "2", "2", and "1" are entered in order in the column "Process No".
"1" means the "first pre-process 31" of the pre-process 30, and "2" means the "second pre-process 32".
The columns "removal distance" are all entered as "10" m.
"1000" m is entered in the "distance to label" of "No. 1". Since the "total winding length" is "8000" m and the "label position" of "No. 1" is "7000" m, "7000" m is subtracted from "8000" m. The subtraction is performed by controller 140 of FIG.
"Distance to label" of "No. 3" and "No. 4" remain blank.
Similarly, "3000" m is entered in the "distance to label" of "No. 2".
In the "distance before stopping (set value)" of "No. 1", "50" m, which is the set value of the "first sheet", is input.
Similarly, "50" m is input to the "distance before stopping (set value)" of "No. 2".
"Distance before stop (set value)" of "No. 3" and "No. 4" remains blank.

(When removing the defective part of "No. 1" shown in FIG. 12)
FIG. 12 shows the case when the robot moves forward "1000 m" and the defective portion "No. 1" is removed.
Since the traveling distance is "1000 m", the "distance to the label" of "No. 1" is subtracted from "1000 m" and changed to "0 m". The subtraction is performed by controller 140 of FIG.
When "○" is entered in "Removal completion" of "No. 1", "Distance to label" of "No. 2" changes from "3000 m" to "1000 m" and "10 m" of "removal distance" ” is subtracted to change to “1990m”. The subtraction of “10 m” from the “removal distance” is performed by the removal distance subtracting section 450 in FIG.
At this time, "5990 m" is entered in "Distance to label" of "No. 4". The "distance to the label" of "No. 4" is "7000 m", but the travel distance "1000 m" and the "removal distance""10m" are subtracted.
"32 m" is input to the "distance before stopping (set value)" of "No. 4". The "distance before stopping" is calculated by the slow/pre-stop distance calculating section 460 in FIG.
At this time, "0.2"% of "2nd sheet a=" is used as "error correction coefficient a", and "20" m of "2nd sheet b=" is used as "minimum stop distance b". be.

(When removing the defective part of "No. 2" shown in Fig. 13)
FIG. 12 shows the time when the robot moves forward by "2000 m" and the defective portion of "No. 2" is removed.
Since the traveling distance is "2000 m", the "distance to the label" of "No. 2" is subtracted from "1990 m" and changed to "0 m".
If "o" is entered in "removal completion" of "No. 2", "1980 m" is entered in "distance to label" of "No. 3". Since the “distance to the label” of “No. 3” is “5000 m”, the first travel distance “1000 m”, the second travel distance “2000 m”, "10 m" and "10 m" (3020 m in total) of the "removal distance" with .2" are subtracted.
"24 m" is input to the "distance before stopping (set value)" of "No. 3". It is calculated by the "No. 3" slow/pre-stop distance calculating section 460 in FIG.
The "distance to label" of "No. 4" changes from "5990 m" to "3980 m". The "distance to the label" of "No. 4" is obtained by subtracting from "5990 m" the traveling distance of "2000 m" and the "removal distance" of "10 m" (total of 2010 m) of "No. 2".

(When removing the defective part of "No. 3" shown in FIG. 14)
FIG. 14 shows the case when the robot moves forward 2000 m and removes the "No. 3" defective portion.
The "distance to label" of "No. 3" is subtracted from "1980 m" and changed to "0 m".
When "o" is entered in "removal completion" of "No. 3", "distance to label" of "No. 4" changes from "3980 m" to "1970 m". The "distance to the label" of "No. 4" is obtained by subtracting from "3980 m" the traveling distance of "2000 m" and the "removal distance" of "10 m" (total of 2010 m) of "No. 3".

(Removal of the defective part of "No. 3" shown in Fig. 15, at the time of completion)
FIG. 15 shows the state when the robot moves forward 2000 m and removes the "No. 4" defective portion.
The "distance to label" of "No. 4" is subtracted from "1970 m" and changed to "0 m".
Remove the defective part of "No. 4", enter "○" in the input column of "Removal completed" of "No. 4", and "Distance to label (m)" of "No. 1 to 4" are all "0", and the defect removing step 20 is completed.

(Description of the display screen of the display device 190 shown in FIG. 16)
FIG. 16 shows an example of the display screen of the display device 190, which is controlled by the control device 140 of FIG.
On the left side of the screen in FIG. 16, the same table as the table arranged in the lower row described above with reference to FIGS. 10 to 15 is arranged.
On the upper right side of the screen, the same table as the upper table described above with reference to FIGS. 10 to 15 is arranged.
Various icons for operation are arranged on the lower right side of the screen.
Regarding the reference label (not shown), icons of "present" and "not present" are arranged so that they can be selected alternatively.
On the right side, icons of "slow down" and "stop" are arranged so as to be alternatively selectable in relation to "label arrival time control".
On the lower side, an icon of "label position input clear all" is arranged.

(Explanation of chart shown in FIG. 19)
FIG. 19 is an example of a table for explaining the relationship between the label-to-label distance (m) and the slow/before-stop distance Z (m).
The table shows the number of bad labels 60 with "n" located in the row. Y(m) and Z(m) are located in the columns. The error correction coefficient a (%) in Equation (1) is calculated using 0.2% and the minimum stopping distance b (m, b=15 m).
(Description of the graph shown in FIG. 20)
FIG. 20 is an example graph of the table shown in FIG.

(Description of graphs shown in FIGS. 21 and 22)
21 and 22 respectively show graphs for explaining the error relationship between the distances X1-2 and Y1-2 (m) between labels and the actual distance (m) at the time of stop.
In the graph shown in FIG. 21, diamond-shaped points indicate "conventional specifications." The conventional specification is a specification for stopping the defective label 60 based on the distance from the winding.
The square points indicate the "new specification", that is, an embodiment of the present invention. The new specification stops defective labels 60 in the same pre-process 30 and based on the distance between adjacent defective labels 60. It is a specification to
The error from the actual distance at the time of stop of the new specification is "average 2.8m" per piece.
FIG. 22 is another example of the graph, and the error from the actual distance at the time of stopping is "average 13.7 m" per piece.

(Description of the developed view of the sheet body 40 in each step shown in FIG. 1)
FIG. 1 is a developed view of the sheet body 40 in each step.
In the figure, (a) is the SL process, (b) is the DL process, and (c) is the ST process. The roll-up removal is performed for each process. The total amount of the raw material roll-up removal amount for each process increases cumulatively as the process progresses. For this reason, generally, the more the number of pre-processes 30 increases, the more the total amount of raw material wound up and removed increases.

(Description of the graph shown in FIG. 23(a))
FIG. 23(a) is a graph for explaining an example of the SL-DL inter-label error.
The SL-DL inter-label error is affected by roll-up removal, and is distributed between "positive" and "negative" values.

(Description of the chart shown in FIG. 23(b))
FIG. 23(b) is a chart for explaining average errors and variations between SL-DL labels.
The number N is the number of defective labels 60, which is "10", the average error (m) is "1.5 m", and the variation (σ) is "23.6".
(Description 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 labels 60 in the ST process, and “Y” indicates the positional relationship of the defective labels 60 in the second pre-process 32 .

(Explanation of chart shown in FIG. 25)
FIG. 25 is a chart for explaining the accuracy of positional information transferred to the ST process.
The position information is as indicated by the symbols shown in FIG.
(1) The position information T1 is the distance from the winding to the winding core.
(2) The position information X1 is the distance from the winding end to the SL1 (midpoint) of the first sheet.
The defect label 60 with "SL" written thereon is given in the ST process. In the ST process, as shown in FIG. 1, the first roll-up removal is performed.
(3) The position information X1 is the distance from the winding end to the SL2 (midpoint) of the second sheet.
(4) The position information X1-2 is the distance from the first sheet SL1 to the second sheet SL2 (each intermediate point).

(5) Position information Y1 is the distance from the winding end to DL1 (midpoint) of the first sheet.
The defect label 60 with "DL" written thereon is given in the DL process. In the DL process, as shown in FIG. 1, the second roll-up removal is performed.
(6) The position information Y1 is the distance from the winding end to the DL2 (midpoint) of the second sheet.
(7) Position information Y1-2 is the distance from DL1 of the first sheet to DL2 of the second sheet (each intermediate point).

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

(Description of the process in FIG. 26)
As shown in FIG. 26, the method for removing the defective portion includes (1) a code reading step S10, (2) a slow/stop selecting step S11, (3) an inter-label distance calculating step S12, (4) a stop control step S13, ( 5) slow control step S14, (6) removal distance subtraction step S15, and (7) slow/pre-stop distance calculation step S16. (1) to (7) will be described below.
(Code reading step S10)
In the code reading step S10, in the preceding process 30, the positional information of the defective portion 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 completion, in the step of removing the defective portion (for example, the defective portion removing step 20), it is a step of reading the bar code 51 displayed on the sorting card 50. FIG.
Specifically, the code reading step S10 is executed by the code decoding section 470 as shown in FIG.

(Slow/stop selection step S11)
The slow/stop selection step S11 is a step in which the stop control step S13 or the slow control step S14 can be selected. Specifically, the slow/stop selecting step S11 is executed by the slow/stop selecting unit 440 as shown in FIG.
(Inter-label distance calculation step S12)
In the inter-label distance calculation step S12, among the defective labels 60 applied in the same pre-process 30, the defective label 60 closest to the winding end of the sheet body 40 is set as the first sheet, and the next closest defective label 60 is selected. In this step, the distances between the first defective labels SL1 and DL1 and the second defective labels SL2 and DL2 are calculated as the inter-label distances X1-2 and Y1-2. Specifically, the inter-label distance calculation step S12 is executed by the inter-label distance calculation unit 410 as shown in FIG.

(Stop control step S13)
The stop control step S13 is a step of stopping the sheet 40 based on the inter-label distances X1-2 and Y1-2 calculated in the inter-label distance calculation step S12. Specifically, the stop control step S13 is executed by the stop control section 420 as shown in FIG.
(Slow control step S14)
The slow control step S14 is a step of slowly driving the sheet member 40 based on the inter-label distances X1-2 and Y1-2 calculated in the inter-label distance calculation step S12. Specifically, the slow control step S14 is executed by the slow control unit 430 as shown in FIG.

(Removal distance subtraction step S15)
In the removal distance subtraction step S15, the position information of the defect location includes the removal distance of the defect location contiguous to the defective label 60, and the removal distance is calculated from the inter-label distances X1-2 and Y1-2 calculated in the inter-label distance calculation step S12. is a step of subtracting Specifically, the removal distance subtraction step S15 is performed by the removal distance subtraction unit 450 as shown in FIG.
(Slow/pre-stop distance calculation step S16)
In the slow/pre-stop distance calculation step S16, the error correction coefficient a (%) for the inter-label distance (m) and the minimum stopping distance b (m) of the sheet body 40 are set in advance, and the inter-label distance calculation step is performed. Based on the inter-label distances X1-2 and Y1-2Y calculated in S12, the following equation (1 ) is step S16.
Z = aY + b Expression (1)
-10 ≤ a ≤ 10
0 ≤ b ≤ 99
Specifically, as shown in FIG. 7, the slow/pre-stop distance calculation step S16 is executed by the slow/pre-stop distance calculation unit 460 .

(Characteristic points and effects according to the embodiment based on the present invention)
Aspects of embodiments in accordance with the present invention are as follows.
(First feature point)
The first characteristic point is a method for removing defective portions of the sheet 40 that can deal with defective portions caused by a plurality of previous processes. A defective portion removing method for removing a portion of a sheet body 40 including the defective portion from the sheet body 40 by temporarily stopping winding before each defective portion based on the position information of the portion, wherein the pre-process 30 includes: A second label detection device 130 for attaching a defective label 60 to each defective portion caused by each pre-process 30, and detecting the defective label 60, and a defect attached in the same pre-process 30. Among the labels 60, the defective label 60 closest to the winding end of the sheet body 40 is designated as the first sheet, and the next defective label 60 is designated as the second sheet. The first defective labels SL1 and DL1 and the second defective label A label-to-label distance calculation step S12 for calculating the distances between the labels SL2 and DL2 as the label-to-label distances X1-2 and Y1-2, and the label-to-label distances X1-2 and Y1-2 calculated by the label-to-label distance calculation step S12 and a stop control step S13 for stopping the seat body 40 based on.

(Effect of first feature point)
According to the first characteristic point, the stop control of the sheet body 40 is performed by temporarily stopping the second and subsequent defective labels SL2 and DL2 based on the distance between the adjacent defective labels 60 in the same pre-process 30. can improve the accuracy of
(Second feature point)
A second characteristic point is a method of removing a defective portion. Based on the label-to-label distances X1-2 and Y1-2 calculated in the label-to-label distance calculation step S12, the sheet body 40 is slowly operated in a slow control step S14, and stopped. and a slow/stop selection step S11 in which the control step S13 or the slow control step S14 can be selected.
(Effect of second feature point)
According to the second characteristic point, stop control and slow control can be selected.

(Third feature point)
The third characteristic point is the method of removing the defective portion, the positional information of the defective portion includes the removal distance of the defective portion continuous to the defective label 60, and the inter-label distance X1-2 calculated in the inter-label distance calculating step S12. , Y1-2.
(Effect of the third feature point)
According to the third characteristic point, by subtracting the removal distance from the inter-label distances X1-2 and Y1-2, it is possible to improve the positional accuracy of stop control and slow control.

(Fourth feature point)
A fourth characteristic point is a method of removing defective portions, in which an error correction coefficient a (%) for the inter-label distance (m) and a minimum stopping distance b (m) of the sheet body 40 are set in advance, and the label Based on the inter-label distances X1-2 and Y1-2Y calculated in the inter-distance calculating step S12, the slow/stop distance Z (m) until the second and subsequent defective labels SL2 and DL2 are slowed/stopped is calculated as follows. It is provided with a slow/pre-stop distance calculation step S16 that calculates using the following equation (1).
Z = aY + b Expression (1)
-10 ≤ a ≤ 10
0 ≤ b ≤ 99
(Effect of fourth feature 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 stopping distance b, the encoder in the previous step 30 (for example, It is possible to reduce the influence of the measurement error of the second conveying amount measuring unit 211B) shown in FIG.

(Fifth feature point)
A fifth characteristic point is a method for removing a defective portion. 40, and after completing the pre-process 30, a code reading step S10 of reading the bar code 51 displayed on the sorting card 50 is provided in the step of removing the defective portion (for example, the defective portion removing step 20).
(Effect of fifth feature point)
According to the fifth characteristic point, by using the bar code 51, the defect position information sent from the previous process 30 can be quickly and accurately obtained in the process of removing the defect point (for example, the defect point removal process 20). can be taken in.

(Sixth feature point)
A sixth characteristic point is the winding device 100, which winds up the roll-shaped sheet 40 and winds it before each defective portion based on the position information of the defective portion in the sheet 40 obtained in the previous step 30. The winding device 100 has a plurality of pre-processes 30, and a defective label 60 is attached to each defective portion caused by each pre-process 30, and the winding device 100 In the temporary stop state, the portion of the sheet body 40 including the defective portion can be removed from the sheet body 40. 30, the closest defective label 60 to the winding end of the sheet body 40 is designated as the first sheet, the next closest defective label 60 is designated as the second sheet, and the first defective label SL1. , DL1 and the second defective label SL2, DL2 as the inter-label distances X1-2, Y1-2; and a stop control unit 420 for stopping the seat body 40 based on the distances X1-2 and Y1-2.
(Effect of sixth feature point)
According to the sixth characteristic point, the stop control of the sheet body 40 is performed by temporarily stopping the second and subsequent defective labels SL2 and DL2 based on the distance between the adjacent defective labels 60 in the same pre-process 30. can improve the accuracy of

(Seventh feature point)
A seventh characteristic point is the winding device 100. The winding device 100 causes the sheet body 40 to be slowly driven based on the inter-label distances X1-2 and Y1-2 calculated by the inter-label distance calculation unit 410. A control unit 430 and a slow/stop selection unit 440 capable of selecting the stop control unit 420 or the slow control unit 430 are provided.
(Effect of seventh feature point)
According to the seventh characteristic point, stop control and slow control can be selected.

(Eighth feature point)
The eighth characteristic point is the winding device 100. The location information of the defective portion includes the removal distance of the defective portion that is continuous with the defective label 60. A removal distance subtracting unit 450 for subtracting the removal distance from the inter-label distances X1-2 and Y1-2 is provided.
(Effect of eighth feature point)
According to the eighth characteristic point, by subtracting the removal distance from the inter-label distances X1-2 and Y1-2, it is possible to improve the positional accuracy of stop control and slow control.

(Ninth feature point)
A ninth characteristic point is the winding device 100, in which the error correction coefficient a (%) for the inter-label distance (m) and the minimum stopping distance b (m) of the sheet body 40 are preset in the winding device 100. A third storage unit 400 that can be set and stored, and the error correction coefficient a and the minimum stopping distance b of the sheet body 40 stored in the third storage unit 400 are read out, and the label calculated by the pre-stop distance calculating unit Based on the distances X1-2 and Y1-2Y, the slow/stop distance Z (m) until the second and subsequent defective labels SL2 and DL2 are slowed/stopped is calculated using the following equation (2). and a distance calculation unit before slowing down and stopping.
Z = aY + b Expression (2)
-10 ≤ a ≤ 10
0 ≤ b ≤ 99

(Effect of the ninth feature point)
According to the ninth characteristic point, by correcting the inter-label distances X1-2 and Y1-2 using the error correction coefficient and the minimum stopping distance, the encoder in the previous step 30 (for example, the third 2 conveying amount measuring unit 211B), etc., and the positional accuracy of stop control and slow-moving control can be improved.

REFERENCE SIGNS LIST 10 defect removal system 20 defect removal process 30 pre-process 31 first pre-process 32 second pre-process 40 sheet body 41 original 50 sorting card 51 bar code 60 defective label SL1 1st defective label SL2 2nd sheet Defective label SL3 Third defective label SL4 Fourth defective label DL1 First defective label DL2 Second defective label 100 Winding device 110 Conveyance path 120 Working position 130 Second label detection device 131 First Sensor 132 Second sensor 140 Control device 150 Second transport amount measurement unit 160 Input unit 170 Code reader 180 Slitter device 190 Display device 200 Printer 210 Defect detection device 211A Image processing unit 211Aa Imaging unit 211Ab Defect detection unit 211B Second Conveyance amount measurement unit 220 First labeler 230 First defect processing controller 240 First storage unit 250 First winder 300 Laminating device 310 Defect detection device 320 Second labeler 330 Second defect processing controller 330A Reference Label processing unit 340 Second storage unit 350 Second winder 360 First label detection device 400 Third storage unit 410 Inter-label distance calculation unit 420 Stop control unit 430 Slow control unit 440 Slow/stop selection unit 450 Removal distance subtraction unit 460 Slow/pre-stop distance calculation unit 470 Code decoding unit S10 Code reading step S11 Slow/stop selection step S12 Inter-label distance calculation step S13 Stop control step S14 Slow control step S15 Removal distance subtraction step S16 Slow/stop Previous distance calculation P1 Start point of work position P2 Stop position P3 Slow start position L1 Predetermined distance T1 Acceleration period T2 Normal period T3 Principle period T4 Slow period T5 Deceleration period before slow down T10 Deceleration period before stop X1-2 Distance between labels Y1-2 Distance between labels

Claims (9)

A roll-shaped sheet is wound up, and based on the positional information of the defective parts in the sheet obtained in the previous process, the winding is temporarily stopped before each defective part, and the part of the sheet containing the defective parts is obtained. is removed from the sheet body,
There are a plurality of the pre-processes, and a defect label is attached to each defect location caused by each pre-process,
a label detection device that detects the defective label;
Among the defective labels applied in the same previous process, the defective label closest to the winding end of the sheet body is designated as the first sheet, and the defective label next closest to the winding end is designated as the second sheet. a label-to-label distance calculation step of calculating the distance between the defective label and the second defective label as the label-to-label distance;
a stop control step of stopping the sheet based on the inter-label distance calculated by the inter-label distance calculating step;
A defective portion removing method for a sheet body capable of dealing with defective portions caused by a plurality of previous processes, comprising: a slow control step of slowly driving the sheet based on the inter-label distance calculated in the inter-label distance calculating step;
a slow/stop selection step capable of selecting the stop control step or the slow control step;
2. The method for removing a defective portion of a sheet body according to claim 1, which is capable of coping with a defective portion caused by a plurality of preceding processes. The position information of the defective portion includes a removal distance of the defective portion that is continuous with the defective label,
3. The method according to claim 1 or 2, further comprising a removal distance subtraction step of subtracting the removal distance from the inter-label distance calculated in the inter-label distance calculation step. A method for removing defective portions of a possible sheet body. The error correction coefficient a (%) for the inter-label distance Y (m) and the minimum stopping distance b (m) of the sheet are set in advance,
Based on the label-to-label distance Y (m) calculated in the label-to-label distance calculation step, the following formula (1 3. The 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, further comprising a step of calculating the distance before slowing down and stopping using the ).
Z = aY + b Expression (1)
-10 ≤ a ≤ 10
0 ≤ b ≤ 99 In the preceding step, converting the position information of the defective portion into a barcode, displaying the converted barcode on an arrangement card and attaching it to the sheet body,
5. The method according to any one of claims 1 to 4, wherein after the pre-process is finished, the step of removing the defective portion includes a code reading step of reading the bar code displayed on the sorting card. A method for removing defective portions of a sheet body that can deal with defective portions caused by a plurality of preceding processes. A winding device capable of winding a roll-shaped sheet and temporarily stopping winding before each defective portion based on the positional information of the defective portion of the sheet obtained in the previous process,
There are a plurality of the pre-processes, and a defect label is attached to each defect location caused by each pre-process,
A portion of the sheet body including the defective portion can be removed from the sheet body in a state where the sheet body is temporarily stopped by the winding device,
The winding device includes
a label detection device that detects the defective label;
Among the defective labels applied in the same previous process, the defective label closest to the winding end of the sheet body is designated as the first sheet, and the defective label next closest to the winding end is designated as the second sheet. a label-to-label distance calculator that calculates the distance between the defective label and the second defective label as the label-to-label distance;
a stop control unit that stops the sheet based on the inter-label distance calculated by the inter-label distance calculation unit;
A winding device comprising: The winding device includes
a slow control unit for slowly driving the sheet based on the inter-label distance calculated by the inter-label distance calculation unit;
a slow/stop selection unit that can select the stop control unit or the slow control unit;
7. The winding device according to claim 6, comprising: The position information of the defective portion includes a removal distance of the defective portion that is continuous with the defective label,
The winding device includes
8. The winding device according to claim 6, further comprising a removal distance subtraction section for subtracting the removal distance from the inter-label distance calculated by the inter-label distance calculation section. The winding device includes
a storage unit capable of presetting and storing an error correction coefficient a (%) for the inter-label distance Y (m) and a minimum stopping distance b (m) of the sheet body;
Read out the error correction coefficient a and the minimum stopping distance b stored in the storage unit, and slow down and stop the second and subsequent defective labels based on the inter-label distance Y calculated by the pre-stop distance calculating unit. A slow/pre-stop distance calculation unit that calculates the slow/pre-stop distance Z (m) to using the following formula (2);
8. The winding device according to claim 7, comprising:
Z = aY + b Expression (2)
-10 ≤ a ≤ 10
0 ≤ b ≤ 99

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