CN110431406A - The check device of container and the inspection method of container - Google Patents
The check device of container and the inspection method of container Download PDFInfo
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- CN110431406A CN110431406A CN201780087468.0A CN201780087468A CN110431406A CN 110431406 A CN110431406 A CN 110431406A CN 201780087468 A CN201780087468 A CN 201780087468A CN 110431406 A CN110431406 A CN 110431406A
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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
- G01N21/8806—Specially adapted optical and illumination features
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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
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
Abstract
Check device (1) includes: illumination region (20), with light-emitting surface (22)；Shoot part (40) is configured to opposite across container (10) and illumination region (20)；Determination unit (52), determines whether defect；And the 1st smooth limiting unit (24), it configures in container (10) side of illumination region (20).1st smooth limiting unit (24) includes the light transmission department (244) extended on light-emitting surface (22) in the horizontal direction X and dim light portion (242).Light transmission department (244) and dim light portion (242) are alternately arranged by the 1st smooth limiting unit (24) in the vertical direction y.
Description
Technical field
The present invention relates to the inspection methods of the check device of container and container.
Background technique
As the method for the thin bubble that detection is rarely generated in the inner surface pole of container, particularly vial, has this Shen
The inspection method (patent document 1) proposed before applicant please.
It is thin to steep the inner surface for resulting from vial, by the extremely shallow recess relative to inner surface and cover the thin of the recess
Glass-film is formed.In the inspection method, in order to detect thin bubble, using on impermeable isotropic disk by multiple horizontally long slits with fixation
Interval is vertically set as multistage striped filter device, and light transmission mistake is only made at slit, is taken the photograph using the photo-beat that have passed through thin bubble
The width of light and shade compressed picture in the longitudinal direction out.
Although can also detect thin bubble by this method, it is difficult to differentiate the shade as caused by thin bubble and the wall by vial
Light and shade caused by thick unevenness or the light and shade as caused by the seam (in the step that is formed of seam crossing of mold) of vial etc..Institute
With, even the vial of qualified product, it is also often determined as rejected product, and wish to reduce qualified product elimination factor.
In addition, present applicant proposes using light control film the inspection dress of the defects of fold for detecting vial
Set (patent document 2).Pass through the check device, it is difficult to detect the thin bubble of the extremely shallow recess of inner surface.
Existing technical literature
Patent document
Patent document 1: fairness 7-11490 bulletin
Patent document 2: special open 2013-134185 bulletin
Summary of the invention
Problems to be solved by the invention
The inspection of the container for the defects of capable of checking for profile unsharp thin bubble the object of the present invention is to provide one kind
Look into device and inspection method.
The solution to the problem
The present invention is at least part to solve the above-mentioned problems and completes, and as aspect below or can be answered
Use-case is realized.
[application examples 1]
The check device of the container of the application example is characterized in that, includes:
Illumination region has the light-emitting surface to container irradiation light；
Shoot part is configured to opposite with above-mentioned illumination region across container；
Determination unit determines whether defect based on the image of the container shot by above-mentioned shoot part；And
Light limiting unit is configured in the container side of above-mentioned illumination region,
Above-mentioned smooth limiting unit includes the light transmission department extended in the horizontal direction along above-mentioned light-emitting surface and dim light portion,
Above-mentioned light transmission department is alternately arranged in the vertical direction with above-mentioned dim light portion,
Above-mentioned light transmission department makes to transmit from the light that above-mentioned illumination region is emitted to container side,
Above-mentioned dim light portion has multiple shutters extended in above-mentioned horizontal direction on above-mentioned vertical direction, to from upper
The incident angle for stating the light relative to above-mentioned vertical direction in the light of illumination region outgoing is limited.
According to the application example, can utilize bright on the vertical direction of the vessel surface as caused by light transmission department and dim light portion
The variation of degree, the defects of checking for profile unsharp thin bubble.
[application examples 2]
In the check device of the container of the application example, it can be,
Above-mentioned dim light portion configuration is on the light-emitting surface of above-mentioned illumination region, the height from above-mentioned light-emitting surface in above-mentioned dim light portion
For 0mm~100mm.
According to the application example, the shade of seam can be inhibited in the image of shooting and emphasize the unsharp thin bubble of profile
The defects of shade.
[application examples 3]
In the check device of the container of the application example, it can be,
The width of the above-mentioned vertical direction of above-mentioned light transmission department is 3mm~6mm.
According to the application example, can contour identification unsharp thin bubble the defects of profile shade.
[application examples 4]
In the check device of the container of the application example, it can be,
Above-mentioned dim light portion is to be overlapped multiple light control films and formed.
According to the application example, the power of the light on vertical direction by emphasizing vessel surface can emphasize that profile is unclear
The profile of the defects of clear thin bubble.
[application examples 5]
In the check device of the container of the application example, it can be,
Above-mentioned smooth limiting unit is disposed on and the specified altitude position of the above-mentioned vertical direction of ratio of container region on the lower
1st smooth limiting unit of corresponding position,
In the position corresponding with the region more against the top than above-mentioned specified altitude position of the container side of above-mentioned illumination region, also wrap
The 2nd smooth limiting unit containing the transmission amount reduction for making the light being emitted from above-mentioned illumination region,
Above-mentioned 2nd smooth limiting unit is configured to have specified interval in above-mentioned horizontal direction.
According to the application example, by checking the defects of being easy to produce profile unsharp thin bubble with different optical systems
Container lower section region and the top for being not likely to produce such defect region, the shadow of wall unevenness, seam can be eliminated
The profile for the defects of ringing, making thin bubble is easy to show, and is able to suppress the load of image procossing.
[application examples 6]
In the check device of the container of the application example, it can be,
Above-mentioned determination unit identifies that at least one detects body from captured image, is included in the detection body that will identify that
Interior defined range is arranged in the vertical inspection area extended on above-mentioned vertical direction and extends in above-mentioned horizontal direction
Horizon check region, when the feelings for the detection body in above-mentioned vertical inspection area and above-mentioned horizon check region including 2 or more
Under condition, it is determined as defect.
It can be that detection bodies that are multiple and being identified also are determined as defect by contours segmentation according to the application example.
[application examples 7]
In the check device of the container of the application example, it can be,
Above-mentioned determination unit identifies that at least one detects body from captured image, is being the shape of the detection body identified
For be linked to be cricoid detection body or be arcuation detection body in the case where, be judged to lacking based on to the relevant area of detection body
It falls into.
According to the application example, the detection body of the detection body with cricoid profile or the profile with arcuation can also be sentenced
It is set to defect.
[application examples 8]
In the check device of the container of the application example, it can be,
Above-mentioned determination unit identifies that at least one detects body from captured image, is included in the detection body that will identify that
In the case where part comprising brightness more than defined threshold in interior defined range, it is judged as defect.
According to the application example, the detection body of the dark part in the part and profile become clear comprising profile can be also judged to lacking
It falls into.
[application examples 9]
The inspection method of the container of the application example is characterized in that,
Make the light being emitted from illumination region and have passed through using the shutter extended in the horizontal direction to from above-mentioned luminous
Light behind the dim light portion that the light in portion is limited relative to the incident angle of the vertical direction alternately court on above-mentioned vertical direction
It is irradiated to container,
Using being configured to shoot the image of container across the container shoot part opposite with above-mentioned illumination region,
The bubble of inner surface in container is determined as defect.
According to the application example, can utilize bright on the vertical direction of the vessel surface as caused by light transmission department and dim light portion
The variation of degree, the defects of checking for profile unsharp thin bubble.
Invention effect
The present invention is capable of providing the check device and inspection of the container of the defects of checking for profile unsharp thin bubble a kind of
Checking method.
Detailed description of the invention
Fig. 1 is the side view of the check device of container.
Fig. 2 is the main view of illumination region, the 1st smooth limiting unit and the 2nd smooth limiting unit.
Fig. 3 is the figure for being shown side by side container and its image.
Fig. 4 is the amplification sectional view of thin bubble.
Fig. 5 is the enlarged drawing of the A of Fig. 1.
Fig. 6 is the figure for illustrating the form of profile of the thin bubble in captured image.
Fig. 7 is the figure for illustrating the checking mode in determination unit.
Fig. 8 is the flow chart of the inspection method of container.
Specific embodiment
Hereinafter, using the attached drawing preferred embodiment that the present invention will be described in detail.In addition, embodiment party described below
Formula is not intended to improperly limit the contents of the present invention documented by claims.In addition, institute described below
Composition might not all be required constituent element of the invention.
The check device of the container of present embodiment is characterized in that, includes: illumination region, is had to container irradiation light
Light-emitting surface；Shoot part is configured to opposite with above-mentioned illumination region across container；Determination unit is based on being shot by above-mentioned shoot part
The image of container determine whether defect；And light limiting unit, configuration is in the container side of above-mentioned illumination region, above-mentioned light limitation
Portion includes the light transmission department extended in the horizontal direction along above-mentioned light-emitting surface and dim light portion, above-mentioned light transmission department and above-mentioned dim light
Portion is alternately arranged in the vertical direction, and above-mentioned light transmission department makes to transmit from the light that above-mentioned illumination region is emitted to container side, above-mentioned to subtract
Light portion has multiple shutters extended in above-mentioned horizontal direction on above-mentioned vertical direction, to what is be emitted from above-mentioned illumination region
The incident angle of the light relative to above-mentioned vertical direction in light is limited.
1. the summary of the check device of container
Illustrate the summary of the check device 1 of container 10 using FIG. 1 to FIG. 3.Fig. 1 is that the check device 1 of container 10 is (following
Referred to as " check device 1 ") side view, Fig. 2 is the main view of illumination region 20, the 1st smooth limiting unit 26 of smooth limiting unit 24 and the 2nd,
Fig. 3 is the figure for being shown side by side container and its image.
As shown in FIG. 1 to 3, check device 1 includes: illumination region 20, has the light-emitting surface 22 to 10 irradiation light of container；
Shoot part 40 is configured to opposite across container 10 and illumination region 20；Determination unit 52, based on the container shot by shoot part 40
10 image 80 (Fig. 3) determines whether defect；And the 1st smooth limiting unit 24, it configures in 10 side of container of illumination region 20.
1st smooth limiting unit 24 configuration and container 10 the specified altitude position H1 (Fig. 3) than vertical direction Y on the lower
The corresponding position region 13a.Check device 1 can also include the 2nd smooth limiting unit 26.The 2nd smooth configuration of limiting unit 26 is in illumination region
The position corresponding with the region 13b more against the top than specified altitude position H1 of 20 10 side of container.By with different optical systems
System (the 1st smooth limiting unit 26 of smooth limiting unit 24 and the 2nd) checks the container of the defects of being easy to produce profile unsharp thin bubble
The region 13b of the region 13a of lower section and the top for being not likely to produce such defect, can eliminate the influence of wall unevenness, seam,
The profile for the defects of making thin bubble is easy to show, and is able to suppress the load of image procossing.Therefore, as long as the load of control unit 50 will not
It, then can also be by the 1st smooth configuration corresponding with whole container 10 of limiting unit 24 as problem.In addition, defect will be explained below.
Here, as shown in Figure 1, container 10 is checked with the state of the Y along vertical direction of upright state, that is, axis 12.It is perpendicular
Histogram is the direction of gravity to Y, and horizontal direction X is the direction orthogonal with vertical direction Y.
Check device 1 includes: rotary supporting part 30, is directed at container 10 while rotating container 10 around axis 12 and carries out
Support；And side roller 32, container 10 is rotated while with the contact of the side of container 10.Side roller 32 is illustrated as in Fig. 1
Between container 10 and shoot part 40, but this is that side roller 32, the configuration of side roller 32 will not become shoot part for ease of description
The position of the obstacle of the shooting of 40 pairs of containers 10.
Container 10 is vial, is transparent or semitransparent.It is so-called translucent, refer to can using transmitted through container 10 come
The light of self-luminescent part 20 determines the bright degree of the degree of the defect of the inner surface 15 of container 10.The cross section of container 10 is, for example,
It is round.The cross-sectional shape of container 10 is also possible to polygon.
Specified altitude position H1 is different according to the type of container 10, state of forming etc..Specified altitude position H1 can be with
As so-called first blow line (settle line).First blow line be blown by flutterring of being shaped for oral area (settle blow) with
The changed part of wall thickness formed on the part of mold contact and the portion boundary not contacted with mold.First blow line can be with
It is formed in the horizontal direction X of container 10.Specified altitude position H1 can be set as being easy to produce the lower section of the container 10 of thin bubble 18
Region 13a be not likely to produce it is thin bubble 18 container 10 top region 13b boundary.
Check device 1 is the check device 1 of light transmission mode, is held using the light transmitted through container 10 with 40 Duis of shoot part
The stem portion 13 of device 10 is shot, using part dark than around in captured image 80 (Fig. 3) as in container 10
Body is detected to be detected.
2. defect
Illustrate the defect for wanting to detect by check device 1 using Fig. 3 and Fig. 4.Fig. 4 is the amplification section of thin bubble 18
Figure.In Fig. 4, the transmission amount of light is indicated with the thickness of arrow.
As shown in figure 3, image 80 can be obtained when having carried out shooting with stem portion 13 of the shoot part 40 to container 10.In
In image 80, such as seam 16, thin bubble 18 and wall unevenness 19 are able to confirm that as detection body.Seam 16 is not scarce
The step of the seam for the mold for falling into, but container 10 being formed appears in image 80 as the concealed wire of Y along vertical direction
In.Thin bubble 18 is the defect rarely generated in the position on the lower ratio specified altitude position H1 of container 10.Wall unevenness 19
Not instead of defect, due to the wall thickness of the stem portion 13 of container 10 variation and the dark part that occurs.In addition, there are also burn marks etc.
Defect.
Thin bubble 18 results from the inner surface 15 of container 10 in the ratio specified altitude position H1 of container 10 sometimes on the lower.Thin bubble
18 be to stretch the difference of easness caused by the temperature difference of the parison (parison) in the forming process due to container 10 and generate
's.Thin bubble 18 is that have big with the hollow bubble of extremely shallow recess portion (such as from inner surface 15 be 100 μm of depth below)
Cause circular profile.So in image 80, the profile of thin bubble 18 although show as it is slightly darker than surrounding, but due to be usually with
The brightness of seam 16,19 same degree of wall unevenness, therefore, it is difficult to differentiate.Check device 1 allows for differentiating thin bubble 18 and connecing
Seam 16, wall unevenness 19 etc. and non-defective part.
However, to only detect thin bubble 18 with the filter as existing patent document 1, it is likely that detect
It is thin to steep 18 and seam 16 is determined as defect, the original container 10 for qualified product is excluded as rejected product.Patent document 2
Method similarly can be such.This is because thin bubble 18 is small with the variation of the brightness of surrounding, thin bubble 18 and and non-defective seam
16 etc. luminance difference is less big.
3. illumination region
Illustrate illumination region 20 using Fig. 1 and Fig. 2.
As depicted in figs. 1 and 2, illumination region 20 is the light source for illuminating container 10.Illumination region 20 is that have in 10 side of container
Light-emitting surface 22, the area source that can be illuminated container 10 from the opposite side of shoot part 40.Illumination region 20 is set as to make a reservation for
The size that the entirety of the maximum container 10 checked by check device 1 illuminates.
As shown in Fig. 2, the light-emitting surface 22 of 10 side of container of illumination region 20 is rectangular shape, substantially entire surface is carried out
It shines.Illumination region 20 is configured to face container 10 and shoot part 40, so that the light transmitted through container 10 can reach shoot part 40.
As the light source of illumination region 20, be able to use such as LED, organic EL well known to light source.Illumination region 20 is diffusion
Working flare (light-emitting surface 22) can irradiate uniformly container 10 using diffuser plate using LED before light source
Light.Diffuser plate be able to use spread light from light sources such as LED and to the well known diffuser plate of external exit.Pass through utilization
Diffuser plate spreads light, can reduce in the case where having used many light sources and there is no the unevenness between the part of light source.
Light limiting unit is provided on light-emitting surface 22.
4. smooth limiting unit
Fig. 1, Fig. 2 and Fig. 5 are used to illustrate the 1st smooth limiting unit 26 of smooth limiting unit 24 and the 2nd as light limiting unit.Scheming
In 2, container 10 shown in dotted line is the positional relationship for illustrating the 1st smooth limiting unit 26 of smooth limiting unit 24 and the 2nd.Fig. 5
It is the A enlarged drawing of Fig. 1.
The smooth limiting unit of 4-1. the 1st
As shown in Figure 1, Figure 2 and shown in Fig. 5, the 1st smooth limiting unit 24 configure and container 10 ratio vertical direction specified altitude
The corresponding position region 13a of position H1 (Fig. 3) on the lower.This is to reliably detect and have generation to incline in the lower section of container 10
To thin bubble 18.1st smooth limiting unit 24 includes the light transmission department 244 and dim light extended on light-emitting surface 22 in the horizontal direction X
Portion 242.Light transmission department 244 and dim light portion 242 are alternately arranged by the 1st smooth limiting unit 24 in the vertical direction y.This is to pass through
1st smooth limiting unit 24 makes the light transmission mistake being emitted in a manner of diffusion on from light-emitting surface 22 towards container 10 in the horizontal direction X,
And limit the light being emitted in a manner of diffusion in the vertical direction y.
Light transmission department 244 makes the light transmission mistake being emitted from illumination region 20.Light transmission department 244 is slit.In light transmission department 244
There is no the objects for blocking the light of light-emitting surface 22.In order to eliminate the shade of seam 16, and can be with transmitted through light transmission department 244
The light of sufficient horizontal direction illuminates container 10.
As shown in figure 5, dim light portion 242 has the shutter 243 extended on multiple X in the horizontal direction in the vertical direction y,
It limits from the incident angle of the light relative to vertical direction Y in the light that illumination region 20 is emitted.Shutter 243 is to subtract
The mode extended on the horizontal direction X and thickness direction in light portion 242 is formed.Dim light portion 242 makes in the diffusion light of light-emitting surface 22
Along shutter 243 light preferentially transmitted through.So the diffusion light of light-emitting surface 22 is by 242 constriction of dim light portion, and especially to
The transmission of the light of vertical direction Y diffusion is restricted.Shutter 243 is for example upwardly extended in the side orthogonal with light-emitting surface 22.Cause
This, dim light portion 242 make from light-emitting surface 22 be emitted horizontal direction X light preferentially transmitted through.
In this way, as shown in the image 80 of Fig. 3, the inner surface 15 of the container 10 caused by light transmission department 244 and dim light portion 242
Vertical direction Y on the variation of brightness show as the candy strip of the brightness change for having gentle.Further, it is possible to perpendicular using this
Profile unsharp thin the defects of steeping 18, is confirmed in the variation of brightness of the histogram on Y in image 80, can be in check device
Zero defect has been determined in 1.
In addition, expanding due to the light transmission department 244 and dim light portion 242 being alternately arranged in the vertical direction y to horizontal direction X
Scattered light can substantially arrive at container 10, therefore, the step due to horizontal direction is less prone in image 80 and is generated dark
Seam 16 (variation of brightness becomes smaller).The wall unevenness 19 of the variation performance of wall thickness as horizontal direction is also not easy as dark
Part appears in image 80 (variation of brightness becomes smaller).
Dim light portion 242 configures on the light-emitting surface 22 of illumination region 20, and the height from light-emitting surface 22 in dim light portion 242 is
0mm~100mm.Since dim light portion 242 has defined thickness, the shade of seam 16 can be inhibited in the image 80 of shooting,
And emphasize the shade of profile unsharp thin the defects of steeping 18.The height from light-emitting surface 22 in dim light portion 242 can also be
0mm~100mm.
Dim light portion 242 is to be overlapped multiple light control films and formed.By emphasize container 10 inner surface 15 it is vertical
The power of light on the Y of direction can emphasize the profile of profile unsharp thin the defects of steeping 18.It is shown in FIG. 52 thickness
Degree is the example that the light control film of 0.5mm is overlapped and is bonded in a thickness direction.Light control film is able to use commercially available photocontrol
Film.For example, can be using " the LIGHT CON FILM 60DEG 12 × 11 " etc. of 3M company manufacture.
The width of the vertical direction Y of light transmission department 244 can be 3mm~6mm.Through the present inventor etc. to various each
The shade of the profile for the defects of sample of the thin bubble 18 of sample checked, the width unsharp for contour identification thin bubble 18 and
Speech is appropriate width.
By carrying out water to the part corresponding with the region 13a of lower section of image 80 in aftermentioned image processing part 53
It, can be by the item caused by dim light portion 242 and light transmission department 244 square to the difference processing of X and the difference processing of vertical direction Y
The dark part of line pattern, seam 16 and wall unevenness 19 removes, and retains the shade of the profile of thin bubble 18.
As shown in Fig. 2, between the 1st smooth limiting unit 24 is by being spaced apart regulation on the thin slice made of being bonded 2 light control films
Dim light portion 242 and light transmission department 244 are arranged alternately every being arranged multiple (in Fig. 2 be 3) slits.1st smooth limiting unit 24 exists
The both ends of its width direction (horizontal direction X) are provided with the long hole 246 extended in the vertical direction y, and are fixed to by bolt 28
Illumination region 20.1st smooth limiting unit 24 can move in the vertical direction y along long hole 246, match the height of container 10 to adjust position
It sets.
The smooth limiting unit of 4-2. the 2nd
As shown in Fig. 2, the 2nd smooth limiting unit 26 is in position corresponding with the region 13b more against the top than specified altitude position H1
On be spaced apart specified interval configured with 2.This is because the region 13b of top is not that the generation as the region 13a of lower section is non-
The region of often shallow thin bubble 18.As long as the 2nd smooth limiting unit 26 is defined with the light transmission for carrying out self-luminescent part 20 can be made to cross
Interval can be 2 and be connected, is also possible to be formed as one.
2 the 2nd smooth limiting units 26 reduce the transmission amount for the light being emitted from illumination region 20.2 the 2nd smooth limiting units 26 configure
To have specified interval on X in the horizontal direction.The bubble for the inner surface 15 that region 13b above is generated is not extremely shallow thin bubble
18, therefore can also be detected by the structure of the 2nd smooth limiting unit 26.Top of the specified interval of horizontal direction X than stem portion 13
The width of the horizontal direction X of region 13b is narrow.By in aftermentioned image processing part 53, to the region with top of image 80
The corresponding part 13b carries out the difference processing of vertical direction Y, can remove the dark part of seam 16 and wall unevenness 19.
2nd smooth limiting unit 26 is able to use barn door.As barn door, it is able to use thin metal plate, such as iron plate.
2nd smooth limiting unit 26 is fixed to illumination region 20 by bolt 28 in the end of the horizontal direction X of illumination region 20.2nd
Light limiting unit 26 has 2 long holes 264 up and down, can be moved in the vertical direction y by unclamping bolt 28, can match appearance
The height of device 10 carrys out adjusting position.
5. rotary supporting part
As shown in Figure 1, rotary supporting part 30 and side roller 32 rotate container 10 around axis 12.The support of rotary supporting part 30 is held
The bottom 14 of device 10.Axis 12 is the imaginary line of the Pivot axle rotated as container 10.
Rotary supporting part 30 be also possible in the state of support container 10 by container 10 to shown in Fig. 1 and Fig. 2
The component carried of the specified position check.In this case, container 10 is from rotary supporting part 30 to being checked
Specified position successively intermittently carry, rotate container 10 centered on axis 12.
The driving force of motor 60 is transmitted to 30 He of rotary supporting part via band 35 etc. according to the instruction of rotation control unit 62
Side roller 32, rotary supporting part 30 are rotated.Rotary supporting part 30 is when container 10 is carried to the position checked to advise
The rotation of constant speed degree progress specified amount.The rotation of specified amount is the amount for being enough to shoot the complete cycle of container 10.In order to 1
Image data grasps entire detection body, it is specified that the rotation of amount is set as 1.2 circles or more.The rotation amount of rotary supporting part 30 is by controlling
Portion 50 is calculated according to the output of rotation detection portion 54.Rotation detection portion 54 can be the rotation for being directly or indirectly assemblied in motor 60
Turn encoder.
6. shoot part
As shown in Figure 1, shoot part 40 be configured to it is opposite across container 10 and illumination region 20.Shoot part 40 is configured to axis
The surface of container 10 on 12 is shot.Shoot part 40 is configured at least check object part of shooting container 10, In
This is configured so that the entirety of the vertical direction Y of the stem portion 13 of container 10 enters in the visual field of shoot part 40.
Shoot part 40 can utilize the photo-beat transmitted through the illumination region 20 of container 10 to take the photograph comprising detection body (comprising thin bubble 18)
Image.Shoot part 40 is for example able to use well known line sensor camera.Shoot part 4 is according to the output of rotation detection portion 54
The rotation speed of matching rotation support portion 30 is shot, thus, even if rotation speed changes for some reason,
Will not have an impact to image 80.
Shoot part 40 shoots the complete cycle of stem portion 13, its data is sent to the image processing part 53 of control unit 50,
Defined processing is implemented to image 80.As shown in figure 3, in image 80 before image procossing, in the lower section with stem portion 13
There is the candy strip extended on X in the horizontal direction in the corresponding part region 13a.This is Fig. 1 and the 1st light shown in Fig. 2 limit
The dim light portion 242 in portion 24 processed and the influence of light transmission department 244.
In the part corresponding with the region 13a of lower section of image 80, due to making to level by the 1st smooth limiting unit 24
Direction X diffusion it is wide be irradiated to stem portion 13, and limit to the illumination that vertical direction Y is spread to the lower section of stem portion 13
Region 13a, therefore, the shade of seam 16 hardly appears in image 80.With do not have as the 1st smooth limiting unit 24
Structure the 2nd corresponding top of smooth limiting unit 26 region 13b in seam 16 and wall unevenness 19 appear in image 80.
Image processing part 53 can implement the well known grey level transition processing of vertical direction Y to image 80 to eliminate by the
Candy strip caused by 1 smooth limiting unit 24 eliminates the well known grey level transition processing of 80 carrying out horizontal direction X of image
The seam 16 of the region 13b of side and the shade of wall unevenness 19.As grey level transition processing, such as shadow correction can be used
Processing, processing, dynamic thresholding method (Dynamic Binarization processing) that grey level transition is carried out based on the difference with benchmark image etc..
As grey level transition processing, such as the real-time deep or light correction of Keyemce (Keyence) company can be used.Real-time deep or light correction
Be to according to illumination condition of container 10 as check object etc. and the background luminance of issuable image data change into
Row correction.For example, when producing dark such brightness compared with stem portion 13 not in the part for being equivalent to bottom 14 of image 80
In the case where, the same brightness is averagely become by deep or light in real time be corrected on the whole.
Therefore, thin bubble 18 and seam 16, wall unevenness 19 can either be accurately distinguished, and can more accurately be detected the presence of
Thin bubble 18.
7. determination unit
As shown in Figure 1, determination unit 52 is a part of control unit 50.Therefore, control unit 50 is according to the judgement of determination unit 52
As a result the processing after the container 10 checked out is indicated.Determination unit 52 is also possible to independently of the setting of control unit 50.In
In this case, by the judgement result notice of determination unit 52 to control unit 50.
Determination unit 52 is further described using Fig. 6 and Fig. 7.Fig. 6 is the thin bubble 18 illustrated in captured image
The figure of the form of profile 18a~18d, Fig. 7 are the figures for illustrating the checking mode in determination unit 52.Fig. 6 and Fig. 7 is by image
Reason portion 53 image 80 of Fig. 3 is implemented the profile 18a of the thin bubble 18 after the difference processing of vertical direction Y and horizontal direction X~
18d。
Many containers 10 are checked, as a result confirmed that there are 4 kinds of profile 18a~18d.Fig. 6 is schematically shown
Cricoid profile 18a, the profile 18b separated, arcuation profile 18c and bright part 18d.Determination unit 52, which has, to be used
In the inspection gimmick that 4 kinds of profile 18a~18d are identified as to defect (thin bubble 18).
Determination unit 52 is based on the image data after image procossing, according to the deep or light by the part darker than around of such as brightness
It is identified as detection body, all determination processings below are carried out to each detection body.Then, it is determined that portion 52 is determined as defective appearance
Device 10 is judged as rejected product, and control unit 50 guides the container 10 to discharge production line.
The cricoid profile of 7-1.
The cricoid profile 18a of upper left in Fig. 6 is that the shape of the detection body identified is to be linked to be cricoid detection body.
As shown in fig. 7, determination unit 52 identification at least one can detect body from captured image 80 (Fig. 3), it is being the inspection identified
The shape for surveying body is that can be determined as defect based on area relevant to detection body in the case where being linked to be cricoid detection body.
Determined in this way, the detection body with cricoid profile 18a can be determined as defect, will have defective container 10
It is determined as rejected product.
In the case where detecting body has cricoid profile 18a, the inspection including completely including cricoid profile 18a is set
Region 81 is looked into, in the area for the cricoid profile 18a that will be in the inside of inspection area 81 and by cricoid profile 18a encirclement
In the case that area obtained from the area of range is added is defined threshold or more, which is determined as defect,
Container 10 is determined as rejected product.Do so is due to if only determining whether defect with the area of cricoid profile 18a
(thin bubble), even if then sometimes even can will be because of the still equal facet of remaining wall unevenness 19 after having carried out image procossing
Long-pending detection body is also determined as defect, therefore to prevent such case.
The profile that 7-2. is separated
The profile 18b that 2 kinds of middle section in Fig. 6 separate be the shape of the detection body identified be divided into it is multiple and
The detection body identified.The profile 18b separated in left side is divided into 2, and the profile 18b separated on right side is divided into
4.It can not be identified as cricoid profile 18a if being divided like this, it is therefore desirable to carry out the place different from above-mentioned 7-1
Reason.
As shown in fig. 7, determination unit 52 identification at least one detection body (can be separated from captured image 80 (Fig. 3)
Profile 18b), set in the defined range that the detection body that will identify that is included extend in the vertical direction y it is perpendicular
Straight inspection area 82 and the horizon check region 84 extended on X in the horizontal direction, when in vertical inspection area 82 and horizon check
In the case where the interior detection body (the profile 18b separated) comprising 2 or more in region 84, it is determined as defect.It can be by profile quilt
It is divided into detection body that is multiple and identifying and is also determined as defect.
For example, the width of the horizontal direction X of vertical inspection area 82 matches the horizontal direction X of 1 profile 18b separated
Width set, the matched of the vertical direction Y of vertical inspection area 82 arranges the profile 18b that 3 separate
Height set.
The matched 1 profile 18b separated of the vertical direction Y in horizon check region 84 is set, horizon check
The width matching of the horizontal direction X in region 84 sets width made of profile 18b that 3 separate arrangement.
The profile of 7-3. arcuation
The profile 18c of arcuation on the left of lower section in Fig. 6 is that the shape of the detection body identified is the detection body of arcuation.
For the profile 18c of this arcuation, need to carry out the processing different from above-mentioned 7-1 and above-mentioned 7-2.
As shown in fig. 7, determination unit 52 identification at least one can detect body from captured image 80 (Fig. 3), it is being to know
Not Chu detection body shape be arcuation detection body in the case where, can based on to detection body (the profile 18c of arcuation) it is related
Area be determined as defect.Determined in this way, the detection body of the profile 18c with arcuation can be judged to lacking
It falls into, can will have defective container 10 and be determined as rejected product.
In the case where detecting body has the profile 18c of arcuation, the setting external test zone external with the profile 18c of arcuation
Domain 85, the area ratio between the area of the profile 18c of arcuation and the area of external inspection area 85 are defined threshold or more
In the case of, the profile 18c of the arcuation is determined as defect, container 10 is determined as rejected product.Do so be due to, if only with
The area of the profile 18c of arcuation determines whether defect (thin bubble), even if then sometimes even can will be because of carrying out at image
The detection body for the small area that still remaining wall unevenness 19 waits after reason is also determined as defect, therefore to prevent such case.
7-4. bright part
Bright part 18d on the right side of lower section in Fig. 6 is that have near detection body (such as cricoid profile 18a)
There is the part of the brightness of defined threshold or more.
As shown in fig. 7, determination unit 52 can from the captured image 80 (Fig. 3) identification at least one detection body (such as ring
The profile 18a of shape), brightness more than defined threshold is included in the defined range that the detection body that will identify that is included
Part (bright part 18d) in the case where, container 10 is determined as defect.It can be by the part become clear comprising profile and wheel
The detection body of wide dark part is also determined as defect.Although this is because, the part that dirt etc. is only dark, such as thin bubble 18 that
In the case where the shape of sample, there is bright part 18d sometimes, therefore, even if the profile of thin bubble 18 is small, can also be identified as
Thin bubble 18.
The type of detection body can be the profile 18b separated, be also possible to the profile 18c of arcuation.
8. inspection method
The inspection method of the container 10 of present embodiment is characterized in that, is made the light being emitted from illumination region 20 and be have passed through benefit
The light for carrying out self-luminescent part 20 is carried out relative to the incident angle of vertical direction Y with the shutter 243 extended on X in the horizontal direction
Light behind the dim light portion 242 of limitation is alternately irradiated towards container 10 in the vertical direction y, using be configured to across container 10 with
The opposite shoot part 40 of illumination region 20 shoots the image 80 of container 10, and the bubble of the inner surface 15 in container 10 is judged to lacking
It falls into.
According to the inspection method of container 10, the vertical side of the vessel surface caused by light transmission department and dim light portion can be utilized
The variation of upward brightness checks for the unsharp thin bubble 18 of profile and waits detection body.
Illustrate the inspection method using check device 1 using FIG. 1 to FIG. 8.Fig. 8 is the stream of the inspection method of container 10
Cheng Tu.
S10: control unit 50 issues an instruction to drive motor 60 to rotation control unit 62, makes rotary supporting part 30 and side roller 32
It is rotated with fixing speed.Due to the rotation of rotary supporting part 30 and side roller 32, the container 10 for checking position is moved to axis
Start to rotate centered on 12.
S20: control unit 50 issues the instruction for starting shooting to shoot part 40.Shoot part 40 according to control unit 50 instruction,
The rotation angle that container 10 is calculated based on the output from rotation detection portion 54, shoots the complete cycle of stem portion 13.
S30: control unit 50 issues the instruction that image 80 is stored to storage unit (not shown) to image processing part 53.Image
The image 80 of the storage of processing unit 53 at least 1 week (such as 1.5 weeks) of container 10.
S40: control unit 50 makes determination unit 52 determine that whether there is or not detection bodies in stored image 80.In judgement the result is that figure
In the case where in 80 without detection body, processing terminate for determination unit 52, carries container 10 to next process as qualified product.
In addition, executing 4 inspections algorithm below the result is that in the case where having detection body in image 80 in judgement.
S50 (the 1st inspection algorithm): determination unit 52 identifies that at least one detects body from captured image 80, is being identification
The shape of detection body out is in the case where being linked to be cricoid detection body (cricoid profile 18a), based on relevant to detection body
Area will test body and be determined as defect.The detailed content of inspection is omitted as illustrated by above-mentioned 7-1.
S60 (the 2nd inspection algorithm): determination unit 52 identifies that at least one detection body (is separated from captured image 80
Profile 18b), set in the defined range that the detection body that will identify that is included extend in the vertical direction y it is vertical
The horizon check region 84 extended on inspection area 82 and in the horizontal direction X, when in vertical inspection area 82 and horizon check area
In the case where the interior detection body (the profile 18b separated) comprising 2 or more in domain 84, it will test body and be determined as defect.It checks
Detailed content is omitted as illustrated by above-mentioned 7-2.
S70 (the 3rd checks algorithm): the identification at least one from captured image 80 (Fig. 3) of determination unit 52 detects body, In
In the case where being detection body of the shape of the detection body identified for arcuation, based on related to detection body (the profile 18c of arcuation)
Area, will test body and be determined as defect.The detailed content of inspection is omitted as illustrated by above-mentioned 7-3.
S80 (the 4th inspection algorithm): determination unit 52 identify at least one detection body (such as ring-type from captured image 80
Profile 18a), when in the defined range that the detection body that will identify that is included include defined threshold more than brightness
Part (bright part 18d) in the case where, will test body and be determined as defect.The detailed content of inspection is as described in above-mentioned 7-4
As bright, therefore omit.
S90: body will test by any one algorithm in the 1st inspection algorithm~the 4th inspection algorithm in determination unit 52 and sentence
In the case where being set to defect, executing discharge processing (S100) makes determination unit in the case where will test body to be determined as is not defect
52 processing terminate, and control unit 50 carries container 10 to next process.
S100: control unit 50 by determination unit 52 be determined as the container 10 of defective rejected product from go to next work
The different discharge unit (not shown) discharge of the transport path of sequence.
The present invention is not limited to above-mentioned embodiments, can further progress various modifications.For example, the present invention includes and implementation
Substantially the same composition of the composition illustrated in mode is (for example, function, method and the identical composition of result or purpose and effect
Identical composition).In addition, the present invention includes that the nonessential part in the composition illustrated in embodiment has been carried out displacement
It constitutes.In addition, the present invention includes to serve the same role the composition of effect with the composition illustrated in embodiment or can reach
To the composition of identical purpose.In addition, the present invention includes that attached the composition of well-known technique to the composition illustrated in embodiment.
Description of symbols
1 ... check device, 10 ... containers, 11 ... oral areas, 12 ... axis, 13 ... stem portions, the region of the lower section 13a ...,
The region of the top 13b ..., 14 ... bottoms, 15 ... inner surfaces, 16 ... seams, 18 ... thin bubbles, the cricoid profile of 18a ..., 18b ... points
The profile cut open, the profile of 18c ... arcuation, 18d ... bright part, 19 ... wall unevennesses, 20 ... illumination regions, 22 ... shine
Face, 24 ... the 1st smooth limiting units, 242 ... dim light portions, 243 ... shutters, 244 ... light transmission departments, 246 ... long holes, 26 ... the 2nd light
Limiting unit, 264 ... long holes, 28 ... bolts, 30 ... rotary supporting parts, 32 ... side rollers, 35 ... bands, 40 ... shoot parts, 50 ... controls
Portion, 52 ... determination units, 53 ... image processing parts, 54 ... rotation detection portions, 60 ... motors, 62 ... rotation control units, 80 ... images,
81 ... inspection areas, 82 ... vertical inspection areas, 84 ... horizon check regions, 85 ... external inspection areas, H1 ... specified altitude
Position, H2 ... height, W ... width.
Claims (9)
1. a kind of check device of container, characterized by comprising:
Illumination region has the light-emitting surface to container irradiation light；
Shoot part is configured to opposite with above-mentioned illumination region across container；
Determination unit determines whether defect based on the image of the container shot by above-mentioned shoot part；And
Light limiting unit is configured in the container side of above-mentioned illumination region,
Above-mentioned smooth limiting unit includes the light transmission department extended in the horizontal direction along above-mentioned light-emitting surface and dim light portion,
Above-mentioned light transmission department is alternately arranged in the vertical direction with above-mentioned dim light portion,
Above-mentioned light transmission department makes to transmit from the light that above-mentioned illumination region is emitted to container side,
Above-mentioned dim light portion has multiple shutters extended in above-mentioned horizontal direction on above-mentioned vertical direction, to from above-mentioned hair
The incident angle of the light relative to above-mentioned vertical direction in the light of light portion outgoing is limited.
2. the check device of container according to claim 1, which is characterized in that
On the light-emitting surface of above-mentioned illumination region, the height from above-mentioned light-emitting surface in above-mentioned dim light portion is for above-mentioned dim light portion configuration
0mm~100mm.
3. the check device of container according to claim 1 or 2, which is characterized in that
The width of the above-mentioned vertical direction of above-mentioned light transmission department is 3mm~6mm.
4. according to claim 1 to the check device of container described in any one in 3, which is characterized in that
Above-mentioned dim light portion is to be overlapped multiple light control films and formed.
5. according to claim 1 to the check device of container described in any one in 4, which is characterized in that
Above-mentioned smooth limiting unit is disposed on corresponding with the region of the specified altitude position of the above-mentioned vertical direction of ratio of container on the lower
Position the 1st smooth limiting unit,
In the position corresponding with the region more against the top than above-mentioned specified altitude position of the container side of above-mentioned illumination region, also comprising making
The 2nd smooth limiting unit that the transmission amount for the light being emitted from above-mentioned illumination region is reduced,
2 above-mentioned 2nd smooth limiting units are configured to have specified interval in above-mentioned horizontal direction.
6. according to claim 1 to the check device of container described in any one in 5, which is characterized in that
Above-mentioned determination unit identifies that at least one detects body from captured image, is included in the detection body that will identify that
The vertical inspection area extended on above-mentioned vertical direction and the water extended in above-mentioned horizontal direction are set in defined range
Flat inspection area, when include 2 or more detection bodies in above-mentioned vertical inspection area and above-mentioned horizon check region the case where
Under, it is determined as defect.
7. according to claim 1 to the check device of container described in any one in 6, which is characterized in that
Above-mentioned determination unit identifies that at least one detects body from captured image, is company being the shape for detecting body identified
In the case where detection body circlewise or the detection body for arcuation, defect is determined as based on area relevant to detection body.
8. according to claim 1 to the check device of container described in any one in 7, which is characterized in that
Above-mentioned determination unit identifies that at least one detects body from captured image, is included in the detection body that will identify that
In the case where part comprising brightness more than defined threshold in defined range, it is judged as defect.
9. a kind of inspection method of container, which is characterized in that
Make the light being emitted from illumination region and have passed through using the shutter extended in the horizontal direction to from above-mentioned illumination region
Light behind the dim light portion that light is limited relative to the incident angle of vertical direction is on above-mentioned vertical direction alternately towards appearance
Device irradiation,
Using being configured to shoot the image of container across the container shoot part opposite with above-mentioned illumination region,
The bubble of inner surface in container is determined as defect.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/007814 WO2018158824A1 (en) | 2017-02-28 | 2017-02-28 | Container inspection device and container inspection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110431406A true CN110431406A (en) | 2019-11-08 |
| CN110431406B CN110431406B (en) | 2022-04-01 |
Family
ID=63371115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780087468.0A Active CN110431406B (en) | 2017-02-28 | 2017-02-28 | Container inspection device and container inspection method |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6796704B2 (en) |
| KR (1) | KR102205582B1 (en) |
| CN (1) | CN110431406B (en) |
| PH (1) | PH12019501668A1 (en) |
| WO (1) | WO2018158824A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7312448B2 (en) * | 2019-05-17 | 2023-07-21 | シンクロア株式会社 | Visual aid device |
| JP7220128B2 (en) * | 2019-06-21 | 2023-02-09 | 東洋ガラス株式会社 | Glass bottle inspection method and glass bottle manufacturing method |
| EP3855174A1 (en) * | 2020-01-23 | 2021-07-28 | SCHOTT Schweiz AG | Detection and characterization of defects in pharmaceutical cylindrical containers |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6796704B2 (en) | 2020-12-09 |
| WO2018158824A1 (en) | 2018-09-07 |
| CN110431406B (en) | 2022-04-01 |
| KR102205582B1 (en) | 2021-01-21 |
| KR20190117604A (en) | 2019-10-16 |
| PH12019501668A1 (en) | 2020-03-02 |
| JPWO2018158824A1 (en) | 2019-12-26 |
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