CN104685347B - Thread inspection method, thread inspection device, thread production method, thread package and thread module - Google Patents
Thread inspection method, thread inspection device, thread production method, thread package and thread module Download PDFInfo
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- CN104685347B CN104685347B CN201380051780.6A CN201380051780A CN104685347B CN 104685347 B CN104685347 B CN 104685347B CN 201380051780 A CN201380051780 A CN 201380051780A CN 104685347 B CN104685347 B CN 104685347B
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- silk thread
- line width
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H3/00—Inspecting textile materials
- D06H3/08—Inspecting textile materials by photo-electric or television means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/952—Inspecting the exterior surface of cylindrical bodies or wires
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Textile Engineering (AREA)
- Materials Engineering (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Treatment Of Fiber Materials (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Provided is a thread inspection method, wherein in a thread production process for producing a thread traveling continuously in a longitudinal direction, an image of the traveling thread is captured, and the total length of the traveling thread is inspected at high speed from obtained image data to thereby obtain information relating to a thread defect without falsely recognizing a case where the thread is merely shaking or a case where the thread is merely traveling obliquely as a thread defect. This thread inspection method is characterized in that an image of a traveling thread is captured by an image capturing means, and image data obtained by the image capturing means is subjected to data processing by a data processing means, the data processing comprising: (a) a step for calculating a plurality of thread widths in a predetermined section in a traveling direction from the image data relating to the traveling thread; (b) a step for calculating a variation in thread width from the plurality of thread widths; and (c) a step for comparing the variation in thread width with a first threshold value.
Description
Technical field
The present invention relates to manufacture silk thread line procedures processed in for being continuously traveling along long dimensional directions in silk thread pass through
Data to being obtained using optical method are processed to the state for being held in the presence or absence of defect for producing in silk thread or defect
（For example, section, centre attenuate）Silk thread inspection method.
Background technology
Past, in various fields and purposes using, apply flexibly silk with fiber or fibre, hollow-fibre membrane as representative
Line.
In the past, in the production of these silk threads, it is desirable to can produce in a large number, at high speed or cost is reduced.On the other hand,
Requirement to quality is not strong.But, in recent years, along with science and technology development, also with it is final with silk thread as member of formation
The multifunction of product, combined using the expansion in the field of these silk threads, in order to improve the quality of final products, to silk thread
Become requirement high-quality.I.e., now, except such problems since the past such as a large amount of, high-speed production, low cost production it
Outward, the silk thread high-qualityization of itself also becomes problem.
Here, the silk thread as H.D product is used for and by attracting attention, can enumerate：It is used for automobile or aircraft
Construct the carbon fiber of component, the optical fiber that support information communicating agent understands, be also used for profiled fibre of high function dress material etc..
Similarly, as the silk thread for being required high-quality management, can also enumerate for sewage disposal, water treatment, sea water desalination
Pre-treatment purposes hollow-fibre membrane.These are entirely the shortcoming produced in silk thread（Shape is bad（Damage by pressure, it is flat,
Section, centre attenuate, heave, concavo-convex etc.）, thickness it is bad（Fine rule, thick line etc.）, a part defect, rupture, be mixed into foreign body, rise
Hair, damage, unedged etc.）The silk thread that directly quality of final products can be impacted.Therefore, it is necessary to as strict control
The quality of silk thread.
More specifically, for example hollow-fibre membrane is manufactured generally with macromolecule as raw material, but, have during manufacture
The thinning or thickening on the contrary situation of film.Additionally, also there is the situation in film surface attachment foreign body.When these shortcomings are produced, have right
The strainability of hollow-fibre membrane causes the probability of bad influence.Therefore, in order to not make to generate the hollow-fibre membrane stream of shortcoming
Go out to market, and need to check hollow-fibre membrane surface.
But, generally, with regard to hollow-fibre membrane, after raw material is formed as hollow shape by metal mouth, implement each
Plant and process, produced finally by the mode being wound using up- coiler, therefore, always it is continuously traveling aborning.
Additionally, in order to realize a large amount of, high-speed production, low cost production, generally manufacture many doughnuts side by side simultaneously
Film.
In such manufacture, while many in advancing side by side are H.D with hollow-fibre membrane as representative
Silk thread checked and according to each silk thread detection defect holding the information of the defect of each silk thread in silk thread itself and
It is important in terms of silk thread package after being wound to manufactured silk thread, the qualitative control of the silk thread module for being incorporated into silk thread
's.
Now, in order to the quality of silk thread is completely secured, it is important that examine in the case where the gait of march of silk thread is not slower than
Look into the total length of silk thread.
Always, as monitoring often the state of silk thread the method that detects the defect produced in silk thread, it is proposed that below
Traveling in silk thread inspection method（With reference to patent documentation 1）：Lighting unit and shooting unit are arranged to the running face of silk thread, is used
The reflected light of running face in silk thread of the shooting unit to being produced by lighting unit shoots, 1. according to the picture number for obtaining
According to, will be included in advance in silk thread defect as extraction unit data extract, 2. according to the extraction unit data for obtaining come to extraction
The profile portion data in portion are extracted, and are 3. removed the line segment parallel with the direct of travel of silk thread from the profile portion data for obtaining and are come
As remaining portion's data, 4. by the remaining portion's data for obtaining and threshold value set in advance to be compared to judge defect
Whether there is.Further it is proposed that the inspection method of following silk thread（Patent documentation 2）：To by so as to hang down with the direct of travel of silk thread
The straight direction mode shooting unit that configure consistent with axle is shot, the illumination unit on the surface for light shining silk thread and bat
The image procossing of the view data enforcement regulation that unit is obtained is taken the photograph, the boundary rectangle image of view data and view data are carried out
Relatively judging the presence or absence of defect.
But, in these methods, only it is that line occurs in the normal silk thread of the external factor such as the vibration due to equipment
Situation about rocking is in addition in the case where normal silk thread is only diagonal etc., although these are normal silk threads, but sometimes
It is mistakenly identified as line width local and becomes " centre attenuates " defect that big " saving " defect or line width local diminish.For example, when to Fig. 5
During inspection method described in view data application patent documentation 2 of shown several, with regard to silk thread YT6, sometimes silk thread be only
Diagonal, but boundary rectangle width becomes big and is judged as defect.Additionally, with regard to YT7, only it is that line occurs to rock sometimes, but outward
Connect rectangle width to become big and be judged as defect.
Additionally, by calculating line width according to direct of travel per 1 pixel according to view data for whole silk threads, from
And can differentiate that normal silk thread occurs line and rocks or diagonal or " saving " defect or " centre attenuates " defect, but,
There is data processing time to spend the high performance of the worry that must grow and produce in terms of reflection inspection result delay, data processing to use
Cost increase become problem.
Prior art literature
Patent documentation
Patent documentation 1：2012 No. 092477 publications of Japanese Laid-Open；
Patent documentation 2：International Publication No. 2012/039298.
The content of the invention
Invention problem to be solved
It is an object of the invention to provide a kind of inspection method of silk thread, the inspection method of the silk thread is in manufacture along long chi
In the line procedures processed of the silk thread that very little direction is continuously traveling, the silk thread in traveling is shot, according to the view data for obtaining come
Check the total length of the silk thread in advancing at high speed, by silk thread be not only there is line situation about rocking or silk thread be only diagonal feelings
The information of the defect of silk thread in the case that condition is mistakenly identified as the defect of silk thread, is obtained, thus, silk thread, silk thread package and silk is carried out
The qualitative control of wire module.
For solving the scheme of problem
To achieve these goals, the present invention adopts following method.
That is, the present invention is, a kind of inspection method of silk thread, the silk thread in traveling is shot using shooting unit and
Data processing is carried out to the view data obtained by the shooting unit using data processing unit, the feature of methods described exists
In the data processing includes：
（a）The multiple live widths in the interval of the regulation of direct of travel are calculated according to the view data of silk thread in the traveling
The process of degree；
（b）The process of the deviation of line width is calculated according to the plurality of line width；And
（c）The process that the deviation of the line width is compared with first threshold.
The deviation of the line width can be according to the survey in the interval of the regulation by specified by predetermined segmentation number
The multiple line widths determined at fixed point are calculating.
Additionally, in the inspection method of the silk thread of the present invention, preferably, the data processing is except described（a）、（b）With
（c）Outside, also include：
（d）In the traveling in the interval of the regulation for calculating the direct of travel boundary rectangle width of silk thread and/or
The process of rectangle width is connect inside；
（e）The process of the representative value of line width is calculated according to the plurality of line width；And
（f）By the representative value of the line width and the boundary rectangle width and/or it is described in connect what rectangle width compared
Process.
Additionally, in the inspection method of the silk thread of the present invention, preferably, the data processing is except described（a）、（b）、
（c）、（d）、（e）With（f）Outside, also include：
（g）The process that the difference of the representative value of the line width and the boundary rectangle width is compared with Second Threshold
And/or
（h）The process that the representative value of the line width and the interior difference for connecing rectangle width are compared with the 3rd threshold value.
Additionally, in the inspection method of the silk thread of the present invention, the representative value of the line width can be made to be the traveling in
The meansigma methodss of the line width of the view data of silk thread or intermediate value or maximum or minima or by line width by rising
The line width of the precedence that sequence sorts and preassigned.
Additionally, in the inspection method of the silk thread of the present invention, preferably, data processing is except described（a）、（b）With（c）It
Outward, also include：
（d）The boundary rectangle width of the silk thread in the interval of the regulation for calculating direct of travel and/or interior connect rectangle width
The process of degree；And
（i）By the line width being pre-designed and the boundary rectangle width and/or it is described in connect the mistake that rectangle width compares
Journey.
Additionally, in the inspection method of the silk thread of the present invention, preferably, the data processing is except described（a）、（b）、
（c）、（d）With（i）Outside, also include：
（j）The process that the difference of the line width being pre-designed and the boundary rectangle width is compared with the 4th threshold value
And/or
（k）The process that the line width being pre-designed and the interior difference for connecing rectangle width are compared with the 5th threshold value.
Additionally, in the inspection method of the silk thread of the present invention, preferably, the data processing is except described（a）、（b）With
（c）Outside, also include：
（e）The process of the representative value of line width is calculated according to the plurality of line width；And
（l）The mistake that the difference of the line width being pre-designed and the representative value of the line width is compared with the 6th threshold value
Journey.
Additionally, the check device of the silk thread of the present invention possesses：Shooting unit, shoots to the silk thread in traveling；And
Data processing unit, the view data to being obtained using the shooting unit carry out data processing, also, the check device energy
Enough using the silk thread inspection method any one come check advance in silk thread.
Additionally, the manufacture method of the silk thread of the present invention has：Inspection operation, wherein, using the reviewing party of the silk thread
Any one of method come check advance in silk thread.Further, preferably comprise following operating process：Based in above-mentioned inspection operation
The inspection result for obtaining is come the condition that determines the exception produced in manufacturing process and change manufacturing process.
Invention effect
In accordance with the invention it is possible in the line procedures processed of the silk thread product that manufacture is continuously traveling along long dimensional directions, to row
Silk thread in entering is shot, and recognizes the defect of silk thread according to the total length of the silk thread in the view data inspection traveling for obtaining,
Furthermore it is possible to suppress to be identified as normal silk thread but due to the line in traveling rocks or diagonal and be misidentified as lacking
Sunken situation.Additionally, the information of the defect by obtaining each silk thread such that it is able to find the works such as the variation for the treatment of conditions in advance
Sequence improves yield rate extremely, furthermore it is possible to carry out silk thread, silk thread package and the qualitative control of silk thread module.
Additionally, the inspection method of silk thread of the invention, especially, due to being not in direct of travel according to view data
All fronts calculate line width, but regulation interval only be sampled to calculate line width to multiple, it is possible in short-term
The interior inspection for carrying out silk thread.Therefore, though under the speed for example more than 50m per minute that silk thread is advanced at a high speed, even if
The device used in the data processing unit processed by the view data to shooting is made to be cheap data processing equipment example
Such as in the case of the personal computer of universal product, it is also possible in the case where gait of march is not slower than while checking multi-filament line
Total length, so as to online the state for being held in the presence or absence of defect or defect in each silk thread.
Further, by using the inspection method of the silk thread of the present invention such that it is able to implement suitably and promptly to utilize same
When manufacture multi-filament line silk thread line procedures processed and the silk thread qualitative control of each that manufactures.
Description of the drawings
Fig. 1 is the outline side of an example of the check device of the enforcement of the inspection method for illustrating the silk thread for the present invention
Face figure.
Fig. 2 is that the outline of an example of the check device of the enforcement of the inspection method for illustrating the silk thread for the present invention is bowed
View.
Fig. 3 is entering to view data after view data is obtained for the enforcement of the inspection method of the silk thread for the present invention
The skeleton diagram of the data processing unit that row is processed.
Fig. 4 is the schematic diagram of the view data of the multi-filament line in the traveling obtained exemplified with shooting（It is all normal
Silk thread）.
Fig. 5 is the schematic diagram of another view data of the multi-filament line in the traveling obtained exemplified with shooting（Including being recognized
For abnormal silk thread）.
Fig. 6 be shown for Fig. 5 view data calculate each silk thread multiple line widths process figure.
Fig. 7 be shown for Fig. 5 view data calculate each silk thread boundary rectangle width process figure.
Fig. 8 be shown for Fig. 5 view data calculate each silk thread in connect rectangle width process figure.
Specific embodiment
In the inspection method of the silk thread of the present invention, as the silk thread for becoming check object, as long as hollow-fibre membrane, clothing
The silk thread product of material fiber, carbon fiber, optical fiber, steel wire, catheter tube for medical treatment etc. substantially construction with cylindric or tubulose,
Then can be using any silk thread all as check object.Additionally, the silk thread applied by the inspection method of the silk thread of the present invention both may be used
Being ultimate fibre groups many as ultimate fibre as hollow-fibre membrane, or carbon fiber.
As the hollow-fibre membrane applied by the inspection method of the silk thread of the present invention, for example, can enumerate with Merlon, gather
Alkene, polyamide-based, polyimide, cellulose family, polysulfones, polyether sulfone, polymethacrylic acid, polyacrylonitrile, poly- inclined two
Ceramics such as organic family macromolecule and aluminium oxide, zirconium oxide, titanium dioxide, carborundum such as fluorothene, polyethers ketone etc. are material
Hollow-fibre membrane.
Additionally, the inspection method of the present invention is can also apply to as ultrafilter membrane, micro-filtration membrane, gas separation membrane, infiltration vapour
Change film, dialyzer etc. and the inspection of any one of adopted hollow-fibre membrane.These hollow fiber membrane modules are used at water
Reason, artificial kidney.
For the inspection method of the silk thread of the present invention enforcement check device with shooting to the silk thread in traveling
Shooting unit and the view data to being obtained using the shooting unit carry out the data processing unit of data processing.
Shooting unit arranges the capturing element for carrying out light-receiving to light with referring to point-blank or 2 dimensions（Pixel）Such as CCD,
CMOS and the bright dark data of each pixel light-receiving are configured to the sensor of image.
Additionally, shooting unit can be in traveling silk thread total length according to the regulation being described below each is interval
L obtains view data.That is, by captured view data is engaged, so as in the case where not producing repetition or lacking
The view data of the total length of the silk thread in being advanced.Therefore, the timing of captured image data can be based on the traveling of silk thread speed
The length of degree and the interval L for specifying is suitably adjusting.
In the case where multi-filament line is advanced side by side, the inspection area needed due to the radical according to the silk thread in traveling
Width length, so in order to be shot to which with high-resolution, more preferably linear array light receiving element
Line sensor camera.It is more than the pixel count of line sensor camera preferably 2000 pixels.For meeting above-mentioned line sensor
Video camera, can use Japan ELECTRO SENSORY DEVICES（Share）, system machine in bamboo（Share）, Basler it is public
Manufacturer's products such as department, DALSA companies.
In the case where line sensor camera is used as shooting unit, it is preferred that by taking for shooting image every 1 frame
Obtain the interval of the regulation of the silk thread that line number is set as in traveling.Additionally, by the area sensor of planar alignment light receiving element
In the case that video camera is used for shooting unit, the size of 1 frame of image according to using type determining.Therefore, in shooting image
Size be unsuitable for advance in silk thread regulation interval in the case of, the present invention data processing before, it is also possible to it is right
Shooting image split or carried out and shooting image in front and back combination.
As the lighting unit of the present invention, as long as can be to silk thread parallel with the running face of silk thread and relative to silk thread
Direct of travel is equably illuminated on direction at a right angle.In the case where multi-filament line is advanced side by side, as long as also energy
It is enough that in the direction of the width each silk thread is equably illuminated.The light quantity difference of the illumination on width is preferably set to 20%
Within.As long as additionally, the illumination of lighting unit is the sufficient reflection light quantity for being able to ensure that the defect from silk thread and silk thread
Illumination, then the intensity of illumination light, wavelength are all not limited.
In the present invention, " running face of silk thread " as described below.That is, 1 silk thread respectively be arranged in parallel
2 silk thread conveying rollers contiguously advance in the case of, the silk thread and face parallel with the axle of silk thread conveying roller is set to silk will be included
The running face of line.Additionally, in the case of the parallel traveling of silk thread more than 2, also it is, in the same manner as the situation of 1, to close with silk thread
In the running face of silk thread, formation includes the running face of the silk thread of these multi-filament lines, and the line procedures processed of silk thread are advanced.
In the present invention, lighting unit both can be arranged on and shooting unit phase homonymy relative to the running face of silk thread
Position, it is also possible to be arranged on the position of not homonymy.In the situation for being arranged on " position with above-mentioned shooting unit phase homonymy "
Under, above-mentioned shooting unit carries out light-receiving to the light after the silk thread reflection or scattering illuminated by above-mentioned lighting unit.At this
In the case of, shoot wire section as highlights, shoot background parts as dark portion.Additionally, being arranged on " with above-mentioned bat
Take the photograph the position of unit not homonymy " in the case of, shooting unit carries out light-receiving to the light for transmiting the gap of silk thread, in the situation
Under, shoot wire section as dark portion, shoot background parts as highlights, therefore, as long as considering that this point is carried out at image
Reason.
Additionally, as lighting unit, can using irradiation portion be divided into wire high frequency points lamp-based fluorescent lamp or LED line shine
It is bright etc..It is further possible to using with by multiple optic fiber configureings into wire photoconduction to light such as halogen tungsten lamp, metal halide lamp, LED
Lighting unit that the light in source guides to illuminate, in the lighting unit that is illuminated to light of end face of columned rod lens
Or be provided with the lighting unit of cylindrical lenses in front surface etc..In terms of the viewpoint of cost or maintenance, preferred high-frequency lighting
The fluorescent lamp of formula.But, need gait of march it is fast for example with the speed more than 50m per minute come in the case of being detected,
Preferably, using the lighting unit of the high brightness such as LED, metal halide lamp.
<The first embodiment of the present invention>
The first embodiment of the present invention is illustrated.
In the inspection method of the silk thread of the present invention, the silk thread in traveling is shot using shooting unit, using number
Data processing is carried out to the view data for obtaining according to processing unit.The data processing includes：（a）According to the figure of the silk thread in traveling
Multiple line widths in the interval of the regulation for calculating direct of travel as data（Hereinafter, sometimes referred to as " line width data set ".）
Process（It is below process A）、（b）The process of the deviation of line width is calculated according to the line width data set for obtaining（Hereinafter make
For process B）, and（c）The process that the deviation of the line width is compared with first threshold（It is following as process C）.
The background parts for having wire section and silk thread periphery are shot in the view data obtained using shooting unit, it is first
First, the wire section in the interval of the regulation for extracting direct of travel.For example, by by the brightness value of each pixel included by image
Compare with the threshold value that certain is fixed and apply binary conversion treatment such that it is able to which wire section is entered with the background parts around silk thread
Row is separated.Additionally, in the case where view data includes picture noise, it is preferred that the extraction process stated on the implementation it
Before, implement the Filtering Processing such as equalization filtering, gaussian filtering, medium filtering to reduce picture noise.In process A, according to picture
The wire section of view data obtained from do so is repeatedly measuring the line of each silk thread in the interval of the regulation of direct of travel
Width, and using its result as line width data set.In the measurement of line width, it is preferred that by according to predetermined
The several intervals to specifying of segmentation carry out segmentation to specify measuring point, and the line width at these multiple measuring points is calculated,
Thus, form the line width data set of each silk thread.
In process B, line width is calculated according to each silk thread according to the line width data set calculated in said process A
Deviation.With regard to representing the index of deviation, using standard deviation, variance, the scope from minima to maximum（Maximum with most
The difference of little value）Deng whichever will do.
In process C, by the deviation of the line width data set calculated in said process B and the first threshold set in advance
Value compares.First threshold is suitably set according to the index of the deviation for representing line width.
If the deviation ratio first threshold set in advance of the line width data set of certain silk thread is big, it is judged as in the silk
It is defective in line.
Here, " line width " is as described below.Namely it is preferred that with the silk thread in the view data that obtains
The width relative to the vertical direction of direct of travel is set on the basis of direct of travel.In addition it is also possible to will be relative to traveling side
Width to pre-determined arbitrary direction is set to line width.
Additionally, the length of " interval of regulation " equivalent to the direct of travel of the silk thread checked in the process of 1 secondary data, and
And, it is considered to there is the situation of defect（Size or frequency etc.）Suitably to set.Due in the present invention by the line before and after defect
The deviation of width is used as index, it is therefore desirable to the interval for making the regulation is bigger than the coverage of defect, specifically preferably
It is 1 ~ 10 times of the coverage for being set as defect or so.
Hereinafter, referring to the drawings, while illustrating to the inspection method of the silk thread of the present invention.
Fig. 1 is the acquirement view data of the enforcement of the inspection method of the silk thread for the present invention the inspection processed to which
Look into the summary lateral view that device i.e. view data obtains processing meanss ID.Additionally, the view data that Fig. 2 is Fig. 1 is obtained and processes dress
Put the approximate vertical view of ID.
In fig. 1 and 2, view data obtain processing meanss ID have it is parallel to each other and across 2 silks of positioned at intervals
Line conveying roller R1, R2.Multi-filament line YT1–YTnWith interval B2–BnGround is arranged side by side and contacts with silk thread conveying roller R1, R2, Xiang Jian
Advance in direction shown in head YCD.Additionally, by the multi-filament line YT in traveling1–YTnForm the running face YCP of silk thread（Use dotted line
Diagram）.Each silk thread is located on the running face YCP of the silk thread.
Across the running face YCP of silk thread, lighting unit 2 and shooting unit 1 are set in the first side P1.Shooting unit 1 is set
Put to illuminating silk thread by lighting unit 2 and the scattered reflection light that produces of running face in silk thread carries out the position of light-receiving.
The view data shot by shooting unit 1 is imported in data processing unit 3, is judged by data processing unit 3
The presence or absence of defect of silk thread or state in traveling.
Fig. 3 is entering to view data after view data is obtained for the enforcement of the inspection method of the silk thread for the present invention
The skeleton diagram of the data processing unit that row is processed.
In figure 3, in data processing unit 3, for the view data for obtaining, according to silk in each traveling in process A
The view data of line calculates the line width data set in the interval of the regulation of direct of travel according to each silk thread.Then, in mistake
In journey B, according to the line width data set for calculating according to each silk thread calculating the deviation of line width.Then, in process C,
The quality of silk thread is judged by the deviation of the line width for calculating is compared with first threshold set in advance.If certain silk
The deviation ratio first threshold of the line width in line is big, then be judged as the defect for having in quality in the silk thread.Additionally, in silk thread
Zero defect and be only line situation about rocking occurs or in the case that silk thread is only diagonal, due to the deviation of line width it is little, so
It is prevented from misjudged breaking as the defect having in quality.
Additionally, Fig. 4 is the schematic diagram exemplified with the view data obtained using shooting unit 1.In the diagram, along arrow YCD
Direction advance multi-filament line（YT1、YT2、…YTn）And background parts B between adjacent silk thread and two ends1、B2、…
Bn、Bn+1It is binarized.The silk thread of Fig. 4（YT1、YT2、…YTn）Show a case that each silk thread is normal silk thread.In manufacture
In operation, need to check that each silk thread is normal silk thread at high speed.
Fig. 5 is exemplified with the multi-filament line advanced in the direction along arrow YCD（YT1、YT2、…YTn）Include in each
Plant the schematic diagram of the view data of the silk thread for being considered as abnormal such situation.
In Figure 5, the direct of travel of silk thread is illustrated with arrow YCD, for each silk thread（Line width is designed for example
1.5mm）By the interval L of regulation（Such as 1 frame of 60mm/ images）Calculate multiple line widths of each silk thread（Process A）.Here, such as Fig. 6
It is shown, with predetermined segmentation number（It is 5 in the case of fig. 6）Equally spaced split interval L, also, shown in broken lines
Measuring point calculate 5 each silk threads line width（With regard to the two ends of interval L, it is contemplated that the repetition with image in front and back, starting point is used
Or either one calculating of terminal）.According to the line width that this calculates, No. 5 meters of line width are further calculated for each silk thread
The deviation of calculation value（Here, adopting standard deviation）（Process B）.By the deviation of the line width and first threshold set in advance（Example
Such as 15 μm）Relatively（Process C）.If the deviation ratio first threshold of the line width for calculating is big, in terms of being judged as quality, have one
It is a little abnormal.
Additionally, in silk thread YT as shown in Figure 67Silk thread is occurred in the case that line rocks or in such as silk thread YT like that6That
In the case that sample silk thread is only diagonal, the deviation ratio first threshold of line width is little and is not judged as the defect for having in quality.With this
Relatively, in silk thread YT as shown in Figure 64Silk thread has " saving " or such as silk thread YT like that5Silk thread has " centre attenuates " like that
In the case of, the deviation ratio first threshold of line width is judged as the defect for having in quality greatly.
Here, by interval L60mm（That is, the length of the silk thread for checking in the process of 1 secondary data）In silk thread line width
Calculation times be set to 5 times, but it is possible in view of the size of defect envisioned, the gait of march of silk thread, data processing speed and
The performance of data processing equipment is suitably setting.
<Second embodiment of the present invention>
In the second embodiment of the inspection method of the present invention, except the first embodiment based on the above-mentioned present invention
The presence or absence of silk thread defect inspection outside, additionally it is possible to check the situation of silk thread defect.In this second embodiment, except above-mentioned
Data processing outside, data processing also includes：Above-mentioned traveling in the interval of the regulation of the direct of travel of silk thread in traveling
The boundary rectangle width of middle silk thread and/or interior connect the process calculated by rectangle width（It is below process D）And/or according to live width
Degrees of data group calculates the process of the representative value of line width（It is below process E）, it is and the representative value of line width is external with described
Rectangle width and/or interior connect the process that rectangle width compares（It is below process F）.
In process D, describe the silk thread with view data on the basis of the direct of travel YCD of silk thread（YT1、YT2、…
YTn）External 2 imaginary parallel lines, using the interval of the imaginary parallel lines as boundary rectangle width calculating.Similarly, retouch
Paint the silk thread with view data（YT1、YT2、…YTn）Inside connect 2 imaginary parallel lines, using the interval of the imaginary parallel lines as
Inside connect rectangle width to calculate.In addition it is also possible to using pre-determined arbitrary direction in the same manner as above-mentioned " line width "
Width.
In process E, in the generation of line width, is calculated according to the line width data set of each silk thread obtained from view data
Tabular value.
In process F, carry out the representative value of the representative value of line width and the comparison of boundary rectangle width and/or line width with
The comparison of rectangle width is connect inside.
Then, can by the difference of the boundary rectangle width of silk thread in above-mentioned traveling and the representative value of above-mentioned line width with it is advance
The Second Threshold of setting compares（Process G）And/or rectangle width and above-mentioned line width can will be connect in silk thread in above-mentioned traveling
The difference of representative value compare with the 3rd threshold value set in advance（Process H）.
Here, with regard to the representative value of line width, arbitrarily can be set as the meansigma methodss of line width data set, intermediate value,
Or minima or maximum or the line width of precedence that line width data set is sorted in ascending order and has been preassigned etc..
If the difference of the representative value of boundary rectangle width and line width is bigger than Second Threshold, for example, it is judged as in the silk thread
In have defect as " saving ".Additionally, if the difference of the interior representative value for connecing rectangle width and line width were bigger than the 3rd threshold value, example
The defect as being judged as having " centre attenuates " in the silk thread.
For the view data of the silk thread shown in Fig. 5, in the same manner as first embodiment, each silk thread is calculated by interval L
Multiple line widths, the representative value of line width is calculated according to the value of the multiple line widths for calculating.For example, meansigma methodss are being made
In the case of for representative value, for example as shown in Figure 6, for each silk thread, according to the line for calculating 5 times between interval L
The value of width is calculating the meansigma methodss of line width（Process E）.
Additionally, for the view data shown in Fig. 5, with regard to the boundary rectangle width of each silk thread, as shown in Figure 7,
By with interval L in view data each silk thread（YT1、YT2、…YTn）Partial circumscription it is parallel with the direct of travel YCD of silk thread
2 imaginary parallel lines（Illustrated with the dotted line of profile）Interval be set to boundary rectangle width（Process D）.
Similarly, for the view data shown in Fig. 5, with regard to connecing rectangle width in each silk thread, as shown in Figure 8 that
Sample, by with interval L in view data each silk thread（YT1、YT2、…YTn）It is connecing in part to put down with silk thread direct of travel YCD
Capable imaginary parallel lines（Illustrated with dotted line）Interval be set in connect rectangle width（Process D）.
By the representative value of the line width of each silk thread for doing like this and calculating（Here is meansigma methodss）With boundary rectangle
Width and/or the interior rectangle width that connects compare（Process F）.If for example such as the silk thread YT of Fig. 74As shown in boundary rectangle width and
The representative value of line width（Here is meansigma methodss）Difference compare Second Threshold（Such as 150 μm）Greatly, then can interpolate that to be in the silk thread
In have for example line width local become big " saving " defect.If additionally, for example such as the silk thread YT of Fig. 85As shown in line width
Representative value（Here is meansigma methodss）With the interior difference for connecing rectangle width than the 3rd threshold value（Such as 150 μm）Greatly, then can interpolate that be
There is the defect of such as " centre attenuates " that line width local diminishes in the silk thread.
<Third embodiment of the present invention>
In third embodiment of the present invention, in addition to the first embodiment of the above-mentioned present invention, data processing
Also include：In above-mentioned traveling in the interval of the regulation of the direct of travel of silk thread in traveling the boundary rectangle width of silk thread and/
Or interior connect the process calculated by rectangle width（Process D）, and by the line width being pre-designed and above-mentioned boundary rectangle width
And/or it is above-mentioned in connect the process that rectangle width compares（Process I）.
As described above, in process D, on the basis of the direct of travel YCD of the silk thread in the view data for obtaining with
2 imaginary parallel lines that the wire section of view data is external are described, using the width of the imaginary line as boundary rectangle width
Spend to calculate.Additionally, similarly, the imaginary parallel lines of 2 connect in the wire section with view data are described, by the imaginary line
Width connects rectangle width to calculate as interior.
In process I, the line width that is pre-designed and boundary rectangle width and/or the interior comparison for connecing rectangle width.
Then, the difference of the line width being pre-designed and above-mentioned boundary rectangle width is compared with the 4th threshold value（It was below
Journey J）And/or the line width being pre-designed and the above-mentioned interior difference for connecing rectangle width are compared with the 5th threshold value（It is below process K）.
If the difference of the line width being pre-designed and boundary rectangle width is than the 4th threshold value（Such as 150 μm）Greatly, then judge
For for example having defect as " saving " in the silk thread.If additionally, the line width being pre-designed and the interior difference for connecing rectangle width
Than the 5th threshold value（Such as 150 μm）Greatly, then it is judged as example thering is defect as " centre attenuates " in the silk thread.
In any one above-mentioned embodiment, and then, by adding the generation of the line width and line width that will be pre-designed
Tabular value（Here is meansigma methodss）The process that compares with the 6th threshold value of difference（It is below process L）Such that it is able to whether confirm silk thread
Manufactured with designed line width.If the difference of the representative value of the line width being pre-designed and line width is than the 6th threshold value（Example
Such as 50 μm）It is little, then can interpolate that and manufactured with designed line width for the silk thread.
Additionally, include the silk thread of the check device of the inspection method of the silk thread for being incorporated into the present invention in inspection operation
In manufacture method, it is also possible to including following operating process：Number, position according to the defect detected in inspection operation is come really
Determine the exception of manufacturing process and change the condition of manufacturing process.
In the manufacturing process of silk thread, when the silk thread roller advanced, the guide roller being adjusted to the advanced positions of silk thread
Surface damage and silk thread when contacting with injury region, in the trend of the defective increase of the silk thread.Therefore, when in time per unit example
The quantity of the defect detected the inspection method of the silk thread using the present invention by each silk thread in traveling such as per 1 hour is made
When being counted for Temporal changes, also occurs distinctive increase trend in the Temporal changes of defects count.According to
Each position of silk thread monitors the Temporal changes of defect number in inspection operation, for example, in the defect of time per unit
When number is more than the threshold value for specifying, abnormal alarm of giving notice in manufacturing process, so as to operator can be to the manufacture of silk thread
Operation is checked and is repaired exception.Thereby, it is possible to removing the producing cause of defect in advance, for the manufacturing process of silk thread
Working time, the few silk thread of zero defect or defect can be more manufactured compared with before enforcement.It is preferred, therefore, that checking
During operation includes the manufacture method of the silk thread of the inspection method of the silk thread of the present invention, come really including on the basis of the number of defect
It is scheduled on the exception for occurring in manufacturing process and the operating process of the condition that changes manufacturing process.
With regard to using with silk thread package obtained from the silk thread manufactured by such method or silk thread module, using the present invention
Silk thread inspection method, can hold in advance defect included by the silk thread in package or in silk thread module number or relative to
The positional information of the defect of total length.Thus, for example, in the case that to unreel, energy
Enough silk threads for only using flawless quality is good.In such manner, it is possible to after possibly preventing from always producing due to defect
Operation problem, also, with using the present invention silk thread inspection method before compared with, improve can yield rate.
Additionally, so-called in the present invention " silk thread package " refers to the state after the silk thread after line processed is brought together.
Silk thread package after 1 or multi-filament line are wound into bobbin or spool for example, is consolidated to folding or being cut to silk thread
The silk thread package tied up by silk thread after measured length, but, it is not limited to this mode.
Additionally, " silk thread module " refers to the product of the silk thread package for being incorporated into above-mentioned.For example, silk thread be hollow-fibre membrane
In the case of, the dialyser for hemodialysis, the filter cylinder for water purification etc. can be enumerated.Or, in the situation that silk thread is optical fiber
Under, the endoscope of the optical cable for information communication, the various uses for including medical application can be enumerated, but, do not limit
In this mode.
Embodiment
Hereinafter, based on embodiment, the present invention is specifically illustrated.
Processing meanss ID are obtained in the view data below based on Fig. 1 or Fig. 2 to illustrate in the traveling used in embodiment
The structure of the check device of silk thread.
Lighting unit：LED strip type is illuminated（Output 100W, length 200mm, Xing electric corporation LS II200）
Shooting unit：Line sensor camera（4096 pixels, Basler company system Spl4096 20km）
The gait of march of silk thread：10m/ minutes
Using above-mentioned structure, to the hollow-fibre membrane advanced with the speed of 10m/ minutes in the same face side by side（If
Meter line width 1.5mm）5 silk threads are shot, and change the data processing content of the view data for obtaining come silk in being advanced
The inspection of line.Data processing unit as used herein adopts following structure, specification.
For the arithmetic unit of data processing unit：Personal computer 1
CPU：Intel（Registered trade mark）Core i7–950
Memorizer：6GB
OS：Windows（Registered trade mark）7 professional versions
Image procossing library software：HALCON（Ver.9.0, MVTec company system）
For the size of each of the view data of test：4096 × 3000 pixels.
[embodiment 1]
Silk thread is made to advance 30 minutes, during this period, according to each interval L（60mm）Obtain view data.Then, by interval
L（60mm）In the calculation times of line width of each silk thread be set to 20 times and calculate the standard deviation of this line width of 20 times.Will
The value and first threshold of standard deviation（15μm）Relatively, if standard deviation is less than threshold value, without the exception in quality.
[embodiment 2]
For image data set same as Example 1, in addition to the data processing of embodiment 1, always according to 20 times
The value of calculation of line width calculating the meansigma methodss of line width, and as the representative value of line width.Additionally, according to view data
To calculate the boundary rectangle width of each silk thread and interior connect rectangle width.In external rectangle width and the representative value of line width（Averagely
Value）Difference compare Second Threshold（150μm）In the case of big, " saving " defect is set to, the average of rectangle width and line width is connect interior
The difference of value is than the 3rd threshold value（150μm）In the case of big, " centre attenuates " defect is set to.
[comparative example]
As described in patent documentation 2, by the image of acquirement and according to the imagery exploitation image procossing for obtaining
The boundary rectangle image for obtaining and the interior comparison for connecing rectangular image are come the inspection of silk thread in being advanced.
In embodiment 1,2 and comparative example more than, the silk thread to detecting as quality abnormal is individually analyzed
The quantity of actually quality abnormal therein in table 1 is shown as quality abnormal and correctly detects number by view data, additionally,
The quantity of actually not quality abnormal is shown as into quality abnormal error detection number.
[table 1]
According to the result of table 1, it is known that：Embodiment 1 and embodiment 2 compared with comparative example, quality abnormal error detection number
Reduce.When being individually analyzed to view data, among the quality abnormal error detection number of comparative example, substantially only
It is that line occurs to rock and be detected as the silk thread of quality abnormal or be only diagonal and be detected as the silk thread of quality abnormal.
Additionally, understanding：In embodiment 1, but flase drop measures the standard deviation of line width and exceedes first threshold external square
The difference of shape width or the interior meansigma methodss for connecing rectangle width and line width is little and can not be said to be the slight exception of defect, but,
In embodiment 2, compare the difference of the meansigma methodss of boundary rectangle width and line width with Second Threshold and with the 3rd threshold value comparing
The difference of the meansigma methodss of rectangle width and line width is inside connect, the error detection of quality abnormal thus, is further reduced.
Result according to table 1, it is obvious that though in the silk thread in On line inspection is advanced at a high speed, with
Past inspection method is compared, cheap with the inspection method of the silk thread of the present invention and be prevented from as line rocks or diagonal is caused
Error detection, and then accurately can be detected.
Further, silk thread can be managed using the qualitative data of each silk thread for obtaining, wound the silk thread package of silk thread
With the quality of silk thread module.Additionally, managing the manufacturing process of silk thread by using qualitative data such that it is able to high finished product rate ground
Carry out the manufacture of silk thread.
Industrial applicability
According to the present invention, check the silk thread in advancing online simultaneously, accurately carry out the detection of defect, obtain each
The information of the defect of silk thread, thereby, it is possible to carry out silk thread, silk thread package and the qualitative control of silk thread module.Therefore, the present invention is suitable
Preferably it is used for the manufacturing process of silk thread and the process of silk thread, manufacturing procedure, but, its range of application not limited to this.
The explanation of reference
1：Shooting unit
2：Lighting unit
3：Data processing unit
B{B1~Bn+1}：The background parts that between silk thread and two ends are formed in traveling
ID：View data obtains processing meanss
L：The interval of regulation
P1：First side
P2：Second side
R1、R2：Silk thread conveying roller
YCD：The direct of travel of silk thread
YCP：The running face of silk thread
YT{YT1~YTn}：Silk thread.
Claims (16)
1. a kind of inspection method of silk thread, is shot to the silk thread in traveling using shooting unit and using data processing list
Unit carries out data processing to the view data obtained by the shooting unit, and methods described is characterised by, the data processing
Including：
（a）Multiple line widths in the interval of the regulation of direct of travel are calculated according to the view data of silk thread in the traveling
Process；
（b）The process of the deviation of line width is calculated according to the plurality of line width；
（c）The process that the deviation of the line width is compared with first threshold；
（d）The boundary rectangle width of silk thread and/or interior connect in the traveling in the interval of the regulation for calculating the direct of travel
The process of rectangle width；
（e）The process of the representative value of line width is calculated according to the plurality of line width；And
（f）By the representative value of the line width and the boundary rectangle width and/or it is described in connect the process that rectangle width compares.
2. the inspection method of silk thread according to claim 1, it is characterised in that the deviation of the line width is according to described
The interval of regulation is calculated by multiple line widths of the predetermined measuring point measure split specified by number.
3. the inspection method of silk thread according to claim 1, it is characterised in that the data processing also includes：
（g）The process that the difference of the representative value of the line width and the boundary rectangle width is compared with Second Threshold.
4. the inspection method of silk thread according to claim 1, it is characterised in that the data processing also includes：
（h）The process that the representative value of the line width and the interior difference for connecing rectangle width are compared with the 3rd threshold value.
5. the inspection method of silk thread according to claim 1, it is characterised in that the representative value of the line width is described
The meansigma methodss of multiple line widths that measuring point of the interval of regulation specified by predetermined segmentation number is determined.
6. the inspection method of silk thread according to claim 1, it is characterised in that the representative value of the line width is described
The intermediate value of multiple line widths that measuring point of the interval of regulation specified by predetermined segmentation number is determined.
7. the inspection method of silk thread according to claim 1, it is characterised in that the representative value of the line width is described
The minima of multiple line widths that measuring point of the interval of regulation specified by predetermined segmentation number is determined or maximum.
8. the inspection method of silk thread according to claim 1, it is characterised in that the representative value of the line width is by institute
State multiple line widths that the measuring point of the interval of regulation specified by predetermined segmentation number determines to be sorted in ascending order and pre-
The line width of the precedence for first specifying.
9. the inspection method of silk thread according to claim 1 and 2, it is characterised in that the data processing also includes：
（i）By the line width being pre-designed and the boundary rectangle width and/or it is described in connect the process that rectangle width compares.
10. the inspection method of silk thread according to claim 9, it is characterised in that the data processing also includes：
（j）The process that the difference of the line width being pre-designed and the boundary rectangle width is compared with the 4th threshold value.
The inspection method of 11. silk threads according to claim 9, it is characterised in that the data processing also includes：
（k）The process that the line width being pre-designed and the interior difference for connecing rectangle width are compared with the 5th threshold value.
The inspection method of 12. silk threads according to claim 9, it is characterised in that the data processing also includes：
（l）The process that the difference of the line width being pre-designed and the representative value of the line width is compared with the 6th threshold value.
A kind of 13. check devices of silk thread, wherein, possess：
Shooting unit, shoots to the silk thread in traveling；And
Data processing unit, the view data to being obtained using the shooting unit carry out data processing,
The check device usage right requires the inspection method of the silk thread described in 1 to 12 any one to check the silk in advancing
Line.
A kind of 14. manufacture methods of silk thread, wherein, have：Inspection operation, wherein, usage right requires 1 to 12 any one
The inspection method of described silk thread come check advance in silk thread.
A kind of 15. silk thread packages, wherein, are made up of the silk thread manufactured by the method described in claim 14.
A kind of 16. silk thread modules, wherein, are made up of the silk thread manufactured by the method described in claim 14.
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| JP2012-221880 | 2012-10-04 | ||
| PCT/JP2013/076253 WO2014054528A1 (en) | 2012-10-04 | 2013-09-27 | Thread inspection method, thread inspection device, thread production method, thread package and thread module |
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| CN109804222B (en) * | 2016-12-06 | 2021-12-10 | 日本电气硝子株式会社 | Method for inspecting quality of belt-like glass film |
| CN110857919A (en) * | 2018-08-24 | 2020-03-03 | 东华大学 | Tail yarn defect detection method for package filament |
| JP7425980B2 (en) * | 2020-04-06 | 2024-02-01 | 村田機械株式会社 | Yarn monitoring device, yarn monitoring method, yarn winding machine and yarn monitoring system |
| KR102478600B1 (en) * | 2021-12-27 | 2022-12-15 | 재단법인 한국섬유기계융합연구원 | Fiber arrangement uniformity measurement system of spread carbon fiber using eddy current sensor and method terefor |
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| CN1174607A (en) * | 1993-11-10 | 1998-02-25 | 劳森－赫菲尔公司 | System and method for electronically displaying yarn qualities |
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| JP2556127B2 (en) * | 1989-02-17 | 1996-11-20 | 村田機械株式会社 | Spinning machine management device |
| CH678172A5 (en) * | 1989-06-07 | 1991-08-15 | Zellweger Uster Ag | |
| JPH03229106A (en) * | 1990-02-05 | 1991-10-11 | Yokohama Norin Kikaku Kensashiyochiyou | Yarn irregularity inspecting method |
| US5541734A (en) * | 1992-09-24 | 1996-07-30 | Lawson-Hemphill, Inc. | System for electronically grading yarn |
| US6737102B1 (en) * | 2002-10-31 | 2004-05-18 | Nordson Corporation | Apparatus and methods for applying viscous material in a pattern onto one or more moving strands |
| JP2005299037A (en) * | 2004-04-14 | 2005-10-27 | Murata Mach Ltd | Spun yarn monitoring method and textile machinery |
| JP5220522B2 (en) * | 2008-09-09 | 2013-06-26 | 昭和電工株式会社 | Light emitting device, light emitting module |
| CN101393139B (en) * | 2008-10-22 | 2011-02-16 | 北京中棉机械成套设备有限公司 | Isomerism fibre detection and measurement method and device in lint |
| JP5349494B2 (en) * | 2008-12-11 | 2013-11-20 | 株式会社島精機製作所 | Yarn property measuring apparatus and measuring method |
| JP2011053173A (en) * | 2009-09-04 | 2011-03-17 | Toray Ind Inc | Defect detection method and defect detection device of thread |
| WO2012039298A1 (en) | 2010-09-21 | 2012-03-29 | 東レ株式会社 | Inspection device and inspection method for thread-like product |
| JP5696582B2 (en) | 2010-10-01 | 2015-04-08 | 東レ株式会社 | Running yarn inspection method and yarn manufacturing method |
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| CN1174607A (en) * | 1993-11-10 | 1998-02-25 | 劳森－赫菲尔公司 | System and method for electronically displaying yarn qualities |
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| WO2014054528A1 (en) | 2014-04-10 |
| KR20150063435A (en) | 2015-06-09 |
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| JPWO2014054528A1 (en) | 2016-08-25 |
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