JP2000009724A - Automatic quality deciding method and automatic deciding device for winder-finished product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically classify small reals wound up in a winder process, based on quality data detected by BM(basis weight and moisture) meters of a paper making machine. SOLUTION: For this quality automatic deciding method, when quality data of paper manufactured by a paper making machine are detected by BM meters 5, 6 and inputted into a computer 7 and a small real 8 is manufactured in a later process, namely a winder process, the quality data corresponding to the small real 8 are automatically extracted from the computer 7. Then, the plural quality data corresponding to one scan of the BM meter concerning the extracted data are processed by a prescribed computing equation to thereby obtain single scan operation values. Then, it is decided whether or not the scan operation values are out of range of the quality allowable value set up beforehand, and the number or the ratio of the scan operation values which are not of the range of the allowable quality value is obtained, and the qualities are classified by comparing the counted number or the ratio with a reference value which are set up beforehand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art In a paper mill, generally, a roll of paper (mill roll) manufactured and wound by a paper machine is stored in a warehouse or the like, and is transferred to a winder (also called a slitter or a rewinder) in the next process to form a web. The division in the flow direction and the division in the width direction of the web are performed to manufacture small-sized paper rolls that are easy to ship.

On the other hand, as quality data, before a reel part, which is a step of winding a web in a paper machine, B
An M-meter (Basis Weight & Moisture Measurement System) detector is installed to measure paper basis weight, paper moisture percentage, paper thickness, etc. Using a detector according to In the present invention, the expression "BM meter" refers to the basis weight of paper, the moisture content of paper,
It is used as a generic term for devices that measure paper thickness and the like. In addition, defects that occur on paper such as insects are important as quality data, and are detected by a defect detector or the like installed in front of the reel part. Of these, defects that occur on paper are generally removed, and individual actions can be taken when the detector is activated, but paper basis weight, paper moisture content, paper thickness For the measurement data of the BM meter such as
There are slight fluctuations, and it is not easy to determine good or defective products from these data. Furthermore, when the web (mill roll) wound up by the paper machine is divided by a winder into a small web, measurement data of a BM meter corresponding to the small web is taken out, and the quality of one small web is determined. Requires considerably complicated operations in terms of data transfer, data search, determination method, and the like, and a long time has to be spent for accurate determination.

[0003] In order to solve such a problem, our company has taken up the measurement data of a BM meter with a paper roll wound up by a paper machine.
We have developed and used a computer-based system (small winding system) that stores each (mill roll) and retrieves and retrieves the measurement data of the BM meter corresponding to the small paper roll divided by the winder. As for quality determination, there has been a problem that a method for performing accurate determination in a short time has not been established.

[0004]

SUMMARY OF THE INVENTION As described above, in a small paper roll made by a paper machine, divided by a winder and wound up, measurement data of a BM meter such as a basis weight of the paper, a moisture content of the paper, and a thickness of the paper. Therefore, it is not easy to judge a non-defective product from a non-defective product, and a method for making an accurate determination has not been established.
In the case where the quality of the paper corresponding to one small paper roll changes during the papermaking process, there may be a partial quality abnormality. In general, such a method cannot be used to determine a small web having such a quality abnormality as a defective product.

Accordingly, the present invention introduces a new judging method for judging the quality of a small paper roll when manufacturing a small paper roll in a winder process from a paper roll wound up by a paper machine, and uses a computer for complicated search and calculation. By doing
A method and apparatus for automatically determining the quality rank of each small web from the basis weight of the paper, the moisture content of the paper, the thickness of the paper, etc., which are the detection data of the BM meter corresponding to each small web. Aim.

[0006]

Means for Solving the Problems A first aspect of the present invention is to detect the quality data of a web produced by a paper machine with a BM meter installed in the paper machine, input and store it in a computer, and store the data in a subsequent winder process. When the small web is manufactured, a computer extracts quality data corresponding to the small web according to the division size of the web and performs an arithmetic process on the quality data to determine whether or not the quality of the small web is good. Is output to the winder process, and in the processing of the quality data corresponding to the extracted small web, the BM meter detection unit scans once from the end to the other end in the width direction of the small web ( (Scan) and the quality data for one scan obtained by the measurement are processed by a predetermined calculation formula to obtain a calculation value called one scan calculation value, and the scan calculation value is determined from a range of a preset quality allowable value. Come off It is determined whether or not the number of scan operation values out of the range of the quality tolerance value is counted, or the number of all scan operations of the small paper roll is counted. By calculating the ratio of the calculated value to the number, and comparing the counted number or the ratio with a preset reference number or reference ratio, the small paper roll is set to 2
This is a method for automatically determining the quality of a wonder finished product, which is characterized by making a determination based on the above-mentioned quality ranks.

[0007] A second aspect of the present invention is that the type of the quality data detected by the BM meter and input to the computer includes at least one of paper basis weight, paper moisture percentage, and paper thickness. 2. The method according to claim 1, wherein the scan calculation value is calculated for each type of quality data.

A third aspect of the present invention is that a plurality of quality data obtained by scanning and measuring once from one end to the other in the width direction of the paper by the BM meter detection unit are processed by a computer to obtain a scan calculation value. 2. The method according to claim 1, wherein the predetermined arithmetic expression includes at least one of an arithmetic expression for calculating an average value of quality data for one scan and an arithmetic expression for calculating a variation width of quality data for one scan. Or a method for automatically determining the quality of a wonder finished product according to claim 2.

A fourth aspect of the present invention is that a plurality of ranges of preset quality allowable values for determining whether or not the scan operation value is out of the allowable range are set for one type of quality. The method for automatically determining the quality of a wonder finished product according to any one of claims 1 to 3, characterized in that:

A fifth aspect of the present invention is that the quality data of the web manufactured by the paper machine is detected by a BM meter installed in the paper machine, input to a computer and stored, and the small web is wound from the web in a subsequent winder process. When manufacturing the web paper, the computer extracts quality data corresponding to the small web paper according to the division size of the web paper, performs arithmetic processing, determines whether the quality of the small web paper is good or not, and passes the determination result to the winder process. An automatic determination device for outputting, the automatic determination device includes a communication device and a computer hardware for transmitting and inputting the detection data of the BM meter to a computer for each web wound by a paper machine, and Storage means for storing input quality data as hardware of the computer; search means for searching for quality data corresponding to the small roll in the winder process; The BM meter among the data of the small roll paper extracted in the above manner is scanned once from the end to the other end in the width direction of the paper, and the quality data for one scan obtained by measurement is processed by a predetermined arithmetic expression. Means for obtaining one operation value called a scan operation value, a judgment means for judging whether or not the scan operation value is out of a range of a preset quality allowable value, and a scan operation deviating from the range of the quality allowable value. Calculating means for counting the number of values, or calculating the ratio of the counted number to the number of all scan calculated values of the small paper roll; and a reference number or a reference ratio in which the counted number or the ratio is set in advance Compared to
An automatic quality judgment device for a wonder-finished product, comprising: a judgment means for judging the small rolled paper into two or more quality ranks, and an output device.

A sixth aspect of the present invention is that the automatic determination device has an alarm device that issues an alarm when a small web is judged to have a predetermined quality rank. Automatic quality determination device.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention uses a BM meter (Basis Weight & Moisture Measurement S / M) installed on a paper machine to measure the quality data of a web (also referred to as a mill roll) manufactured by the paper machine.
ystem) to detect and input and store it in a computer before winding it, and when manufacturing a small roll from the roll (mill roll) in the next winding process, the computer extracts quality data corresponding to the small roll. And compute
An automatic judgment method and an apparatus for judging the quality of the small take-up paper and outputting the judgment result to a winder process. The present invention will be described in detail below based on embodiments. However,
The present invention is not limited to this embodiment.

[0013]

FIG. 1 shows a flow relating to an automatic determination system for a winder finished product of the present invention.
In FIG. 1, a web 3 manufactured by a paper machine 1 is wound up as a web (mill roll) 4 by a reel part 2 of the paper machine. Before being wound up, a BM meter detecting unit 5 detects the basis weight of the paper and the paper weight. Quality data such as moisture content and paper thickness are detected.

BM meter (Basis Weight & Moisture Measure)
ment system) is a BM meter detection unit 5 which is a detection unit,
The BM meter control unit 6 is a unit that fetches the detection value of the BM meter detection unit and controls the paper machine by a computer. These data fetched from the BM meter detection unit 5 Is further transmitted to a computer for controlling the winder and input. In the present invention, a computer that controls the winder includes:
This computer was used because it had a function to set the processing method of the winder corresponding to each web (mill roll) 4 wound up by the paper machine and a function to search for data corresponding to the manufactured small web. The system is called the shunt system 7.

In the present embodiment, the BM meter detecting section 5 scans (scans) the web running on the paper machine from one end to the other end, and scans the paper every scan (one-way, about 30 seconds). The data transmission from the BM meter control unit 6 to the shunting system 7 detects data such as the grammage of the paper, the moisture content of the paper, and the thickness of the paper. , The data of 60 divisions are continuously transmitted in the full width every time the BM meter scans, and the shunt system 7 stores the transmitted BM meter data for each web (mill roll) 4. Here, as the data to be transmitted from the BM meter control unit 6 to the shunt system 7, the types of data may be reduced, and for example, only two types of paper basis weight and paper moisture content may be used. It does not do. Further, when changing the frame of the paper machine (changing the type and changing the winding dimensions), the BM meter control unit 6 transmits the brand code, the mill roll winding length, the division roll data of the mill roll winder, etc. to the winding system 7.

The take-up paper (mill roll) 4 wound up by the paper machine is temporarily stored in a storage location of the take-up paper 4 and then sent to a winder process. In the winder process, the operator separates data (brand and the like) corresponding to the web 4 set on the unwind stand (unreel stand) 11 of the winder 17 using a mill roll NO or the like attached to the web 4. Selected from the input / output unit 13 of the winding system 7 and taken out. By this selection, the brand code corresponding to the web 4, the length of the web, the dimension data of the web in the winder, etc. are displayed on the screen of the input / output unit, and the cutting position of each slitter blade is displayed on the control unit 10 of the slitter device.
The signal of (slitting width) is sent to the winding control unit 9. Next, the slitter device is automatically positioned by the operation of the push button of the operator, and further, the operation is started by setting the operation speed and the like and the winding start operation, and the small winding paper 8 of the specified width and the specified winding length is wound up.
The division size of the winding paper in the winder may be set at the time when the winding paper is wound up in the paper machine as described above, but may be determined in the winding process and input from the input / output unit 13 of the winding system 7. I can do it.

The wound small paper roll 8 is kicked out by the kicking-out device 15, and at this time, the automatic quality judgment of the small rolled paper is performed by the shunting system 7.
In this embodiment, the quality ranks to be judged are three ranks, that is, non-defective products, reserved products, and waste paper. However, this ranking may be classified into any type as long as it is two or more ranks, and is particularly limited. is not.

The result of the automatic quality judgment is displayed on the screen of the input / output unit 13 of the shunt system 7. When judged to be a reserved item or a damaged sheet, the damaged sheet is red and the reserved item is yellow. An alarm device 14 with a patrol light is installed and emits an alarm sound at the same time to prevent the operator from being mistakenly recognized. Alarm device 1
The device 4 may include both the patrol light and the device that emits the alarm sound as described above, or may include either one alone.

The operator classifies the small paper roll 8 based on the result of the automatic quality judgment and sends it to the next process. If necessary, profile data (scan paper) for each scan, which is basic data for the quality judgment, is used. (For each basis weight, paper moisture value, paper thickness), 1 scan average value trend (paper basis weight,
Input / output unit of the shunt system 7 for data such as the trend of one scan fluctuation range (for each of paper basis weight, paper moisture value, and paper thickness) for each paper moisture value and paper thickness. It is also possible to make a determination again by checking on the screen shown in FIG. In addition, the operator can take a hard copy of the determination screen, the profile screen, and the trend screen from the input / output unit 13 of the shunt system 7 as necessary, thereby determining that the item is a reserved item or a waste item. In some cases, detailed investigations are possible.

The BM meter control unit 6 supplies a shunt system 7
Is transferred to the shunt system 7 or the host computer 12 connected to the shunt system until the automatic quality determination is completed. From the server (not shown) by the communication system 16 via the host computer 12 and, if necessary, a computer for searching for quality judgment data.
(Not shown).

When the web is classified by the automatic quality judgment, the operator inputs the quality judgment result from the host computer 12 and sends the data to an imprinting machine (not shown) and a labeler (not shown). After the necessary data is displayed on the small paper roll 8, the data is sent to the next step.

Next, a method for automatically determining the quality will be described in detail. The type of quality data measured by the BM meter as a reference for quality determination in the present invention is at least one of the basis weight of paper, the moisture content of paper, and the thickness of paper. A case where determination is made for all types will be described. The automatic determination is performed in the following order (1) to (7).

(1) As described above, the BM meter detection unit 5
Scans the web of the paper machine from one end to the other end, and detects data on the basis weight of the paper, the moisture content of the paper, and the thickness of the paper for each scan. Since the data is transmitted to the winding system 7 and stored, first, all the data for each scan of the BM meter corresponding to the small winding paper to be determined are converted to the basis weight of the paper, the moisture value of the paper, and the thickness of the paper. About the shunt system 7
Search from. In this search, the mill roll number already entered in the winder, the width of small paper (slitter width),
This is performed by automatically specifying data corresponding to the small paper roll to be determined based on the winding length of the small paper roll.

(2) Next, regarding the basis weight of the paper corresponding to the small web to be determined, the average value A
And the fluctuation range R are calculated. Note that the calculated value (average value A or variation range R) for each scan is referred to as a scan calculated value in the present invention. Further, in the present embodiment, as described above, since there are 60 pieces of data for one scan in the entire width of the mill roll, when the mill roll is equally divided into three in the winder, as shown in FIG. As for the small paper roll, one-third of 20 data exists for one scan, and an average value or the like of the 20 data is calculated. At this time, the scan calculation value is calculated for both the average value A and the fluctuation range R for all the scans of the small web to be determined. As shown in FIG. 2, when there are 21 scan data items for the small web to be determined, 21 scan operation values are calculated for each of the average value A and the fluctuation range R.

(3) Next, with respect to the basis weight of the paper, whether each of the average value A and the fluctuation range R, which are the above-mentioned scan calculation values, falls within a range of a preset quality allowable value. Judge. FIGS. 3 and 4 show the case of the present embodiment. FIG. 3 shows a case where the range of the allowable quality value set in advance with respect to the average value A of the basis weight of the paper which is the scan operation value is L to L. H range,
The case where there are two in the range of LL to HH is shown. Also,
FIG. 4 shows that the range of the preset quality allowable value is 0 to H with respect to the variation width R of the paper basis weight of the paper as the scan operation value.
And two ranges from 0 to HH. Note that H and HH are used as symbols for the range of the average value A and the fluctuation range R, but needless to say, they represent different numerical values.

(4) Next, (with respect to the basis weight of the paper) the number of each of the average value A and the fluctuation range R, which are the scan calculation values, are out of the range of the preset allowable quality value. . Alternatively, a ratio of the number to the total number of scans is calculated. In the case of FIG. 3, the number of scan calculation values (average value A of the basis weight of paper) out of the range of L to H is one, and the ratio of the numbers (denoted as BWAH) is 1/21. Also, LL
To HH is 0, and the ratio of the number (B
WAHH) is zero. In the case of FIG. 4, the scan operation value
The number of (the fluctuation width R of the basis weight of the paper) is out of the range of 0 to H, and the ratio (BWRH) of the number is 1/21. The number outside the range of 0 to HH is 0, and the ratio (BWRHH) of the number is 0. Note that BW is used as a symbol representing the basis weight.

(5) Next, the same operation as in the above (2) to (4) is performed on the moisture content of the paper corresponding to the small roll paper to be determined, and the following values are calculated. In addition, the following MP is used as a symbol indicating a water content. The ratio (MPAH) of the number of scan operation values (average value A of paper moisture percentage) out of the range of L to H ・ The scan operation value (average value A of paper moisture ratio) is LL to H
H (MPAHH) The ratio of the number of scans (MPRH) where the scan operation value (fluctuation range R of the paper moisture percentage) is out of the range of 0 to H (MPRH). The fluctuation range R) is 0 to HH
Of the number out of the range (MPRHH)

(6) Next, the following values are calculated by performing the same operations as in the above (2) to (4) with respect to the thickness of the paper corresponding to the small roll paper to be determined. The following CP is used as a symbol indicating the thickness. The ratio (CPAH) of the number of scan operation values (average value of paper thickness A) out of the range of L to H ・ The scan operation value (average value A of paper thickness) is LL to HH
(CPAHH) The ratio of the number of scan operations (the variation width R of the paper thickness) out of the range of 0 to H (MPRH). The scan operation value (the variation of the moisture content of the paper). Width R) is 0 to HH
(CPRHH) In the examples (2) to (6), the basis weight, the moisture content,
Although an example in which the calculation is performed in the order of the thickness has been described, the calculation order is not limited.

(7) Next, the quality rank of the small paper roll to be determined is determined according to the following criteria for determining the quality rank set in advance. <Quality Judgment Criteria>-Broken Sheet Judgment ... If at least one of the following judgment formulas is satisfied, the sheet is judged as broke. About basis weight BWAHH (ratio) ≧ BWAHH preset broke sheet determination reference value (ratio) About basis weight BWRHH (ratio) ≧ BWRHH preset broke sheet determination reference value (ratio) Moisture percentage About MPAHH (ratio) ≧ MPAHH preset broke sheet determination reference value (ratio) Moisture content MPRHH (ratio) ≧ MPAHH preset broke sheet determination reference value (ratio) Thickness CPAHH (Ratio) ≥ CPAHH preset loss paper determination reference value (ratio) About thickness CPRHH (ratio) ≥ CPRHH preset loss paper determination reference value (ratio)

[0030] Reservation judgment: If at least one of the following judgment formulas is satisfied among the items that have not been judged as waste, the item is regarded as a reservation. About basis weight BWAH (ratio) ≥ BWAH preset reference value for broke sheet (ratio) About BWH BWRH (ratio) ≥ preset waste sheet reference value (ratio) for BWRH Moisture rate For MPAH (ratio) ≥ MPAH preset bronze sheet determination reference value (ratio) Moisture content MPRH (ratio) ≥ MPRH preset broke sheet determination reference value (ratio) For thickness CPAH (Ratio) ≥ CPAH-determined reference value for waste sheet judgment (ratio) About thickness CPRH (ratio) ≥ CPRM-determined reference value for failure sheet preset (ratio)

Non-defective judgment: A non-defective item or a non-defective item is regarded as a non-defective item. In this embodiment,
As the final quality judgment criterion, judgment was made using the ratio of the number of scan operation values out of the range of the quality allowable value to the total number, but when the winding length of the small web is determined, etc.
The number of scan operation values that are out of the range of the quality allowable value may be used, and is not particularly limited.

FIG. 5 is a block diagram of the automatic quality judging device of the present invention. The automatic quality determination device of the present invention includes a communication device 27 that transmits BM meter detection quality data from the BM meter control unit 6 to a computer system that performs quality determination, an input device 21, a central processing unit 20, and an output including a display device. It has a device 22, a main memory 23 storing a control program, and other memories 24, 25, 26. The BM meter detection quality data group transmitted and input from the BM meter control unit 6 is stored in the memory 26, and the memory 24 stores the number of scan operation values out of the range of the preset quality allowable value or the ratio of the number. Is stored. Further, the memory 25 stores a criterion for judging the quality rank from the number or the ratio.

The control program in the main memory 23 and the central processing unit 20 retrieve and retrieve quality data corresponding to the small paper roll for which quality is to be determined from the memory 26. For each type of quality data, the scan operation value A, R is calculated, and it is determined whether the scan calculation value is out of the range of the quality tolerance value stored in the memory 24,
The number or ratio is calculated. The calculated number or ratio is compared with a quality rank determination criterion stored in the memory 25 to determine a quality rank. Further, the quality rank is output by the output device 22.

[0034]

The automatic quality judgment method and the automatic quality judgment apparatus according to the present invention provide a paper roll having a basis weight and paper as detection data of a BM meter for a small winding paper formed by a paper machine and divided and wound by a winder. The quality rank of non-defective products, defective products, etc. can be automatically and automatically judged by the computer from the data such as the moisture content of the paper and the thickness of the paper, so that efficient operation is possible and judgment errors are reduced. Labor can be saved. Further, it is possible to use a complicated criterion that cannot be normally performed by a human, and the accuracy of the determination is improved. Further, when the quality changes during the papermaking process of the paper corresponding to one small roll paper to be quality-determined, it is determined as an abnormal value by a general method such as calculating an average value of the entire small roll paper. However, according to the automatic quality determination method of the present invention, even when a quality defect occurs partially, the quality is calculated as an abnormal value, and the defective product can be ranked.
It is possible to perform highly accurate quality judgment according to the actual situation of market requirements.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a manufacturing process of a small paper roll and an automatic judgment method of the present invention.

FIG. 2 is a diagram showing data (profile data) for one roll of paper on the basis weight of paper detected by scanning by a BM meter detection unit.

FIG. 3 is a graph showing a scan calculation value (average value) of one small take-up paper concerning the basis weight of the paper.

FIG. 4 is a graph showing a scan calculation value (fluctuation width) of one small take-up paper with respect to the basis weight of the paper.

FIG. 5 is a block diagram of the automatic determination device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Paper machine 2 ... Reel part 3 ... Web 4 ... Web paper (mill roll) 5 ... BM meter detection part 6 ... BM meter control part 7 ... Separating system using a computer 8 ... Small paper winding 9 ... Winding control part 10 ... Slitter device control unit 11 ... Unwind stand 12 ... Host computer 13 ... Input / output unit 14 ... Alarm device 15 ... Kickout device 16 ... Communication system 17 ... Winder 20 ... Central processing unit 21 ... Input device 22 ... Output device (display device) 23 ... Main memory 24 ... Memory 25 ... Memory 26 ... Memory 27 ... Communication device A ... Average value B ... Variation range

Claims (6)

[Claims] The present invention relates to a method of manufacturing a small web from a web in a winder process in a subsequent process, wherein quality data of a web manufactured by a paper machine is detected by a BM meter installed in the paper machine, input to a computer and stored. Automatically extracting a quality data corresponding to the small web in accordance with a division size of the web by a computer, performing an arithmetic process, determining quality of the small web, and outputting a determination result to a winder process; In the processing of the quality data corresponding to the extracted small web, the BM meter detection unit scans once from the end to the other end in the width direction of the small web and measures one scan. The quality data is processed by a predetermined calculation formula to obtain a calculation value called one scan calculation value, and it is determined whether or not the scan calculation value is out of a range of a predetermined allowable quality value. It is performed on all the scan operation values of the paper sheet, counts the number of scan operation values outside the range of the quality allowable value, or calculates the ratio of the counted number to the number of all the scan operation values of the small paper roll. ,
By comparing the counted number or the ratio with a predetermined reference number or a reference ratio, the small web is classified into two or more quality ranks and determined, and the quality is automatically determined. Judgment method. 2. The type of the quality data detected by the BM meter and input to the computer includes at least one of a basis weight of paper, a moisture percentage of paper, and a thickness of paper, and a scan calculation value. 2. The method according to claim 1, wherein each of the types of the quality data is calculated. 3. The predetermined arithmetic expression for obtaining a scan operation value by processing a plurality of quality data obtained by scanning and measuring once by the BM meter detection unit from one end to the other in the width direction of the paper and obtaining a scan operation value is as follows: 3. An arithmetic expression for calculating an average value of quality data for one scan, and at least one of an arithmetic expression for calculating a variation width of quality data for one scan. A method for automatically determining the quality of the wonder-finished product described. 4. A plurality of ranges of a predetermined quality allowable value for determining whether or not the scan operation value is out of an allowable range, wherein a plurality of ranges are set for one type of quality. The method for automatically determining the quality of a wonder finished product according to any one of claims 1 to 3. 5. The quality data of a web manufactured by a paper machine is detected by a BM meter installed in the paper machine, input to a computer and stored, and used when a small web is manufactured from the web in a subsequent winder process. Automatically determining, by the computer, quality data corresponding to the small web in accordance with the division size of the web, performing arithmetic processing, determining the quality of the small web, and outputting a determination result to a winder process; The automatic determination device includes a communication device for transmitting and inputting the detection data of the BM meter to a computer for each web wound by a paper machine, and computer hardware, and the computer hardware Storage means for storing the input quality data; search means for searching for the quality data corresponding to the small roll in the winder process; 1 inner BM meter data of the small web is obtained by measuring by scanning once the end in the width direction of the paper to the other end
A calculating means for processing the quality data for the scan by a predetermined calculation formula to obtain one calculation value called a scan calculation value, and determining whether or not the scan calculation value is out of a range of a predetermined allowable quality value; Judgment means, count the number of scan operation values out of the range of the quality allowable value,
Alternatively, a calculating means for calculating the ratio of the counted number to the number of all the scan calculated values of the small paper roll, and comparing the counted number or the ratio with a preset reference number or reference ratio, An automatic quality determination device for a wonder-finished product, comprising: a determination unit that classifies and divides a web into two or more quality ranks; and an output device. 6. The automatic quality determination device for a wonder-finished product according to claim 5, wherein the automatic determination device includes an alarm device that issues an alarm when the small web is determined to have a predetermined quality rank.