CN103718025B - Container mouth portion inspection method and device - Google Patents
Container mouth portion inspection method and device Download PDFInfo
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- CN103718025B CN103718025B CN201180072521.2A CN201180072521A CN103718025B CN 103718025 B CN103718025 B CN 103718025B CN 201180072521 A CN201180072521 A CN 201180072521A CN 103718025 B CN103718025 B CN 103718025B
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- 238000007689 inspection Methods 0.000 title claims abstract description 180
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000007547 defect Effects 0.000 claims abstract description 24
- 230000011218 segmentation Effects 0.000 claims description 50
- 230000007246 mechanism Effects 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 23
- 238000005286 illumination Methods 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 19
- 230000002950 deficient Effects 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 4
- 206010034960 Photophobia Diseases 0.000 description 3
- 208000013469 light sensitivity Diseases 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 238000003708 edge detection Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
Classifications
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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
- G01N21/9054—Inspection of sealing surface and container finish
Abstract
The invention discloses a kind of container mouth portion inspection method and device, aim to provide a kind of container mouth portion inspection method and the device that can check the defect at the top of the screw thread of vial accurately.Technical essential of the present invention is, with the top shooting container finish of camera from container, the screw image of the ring-type in this shooting image generates ring-type inspection door, in this ring-type inspection door, search exceedes the dark part of the deep or light difference of regulation, generates thread end inspection door at the regional area of the described ring-type inspection door comprising this dark part.In this thread end inspection door, search for the thread end image that mates with the login picture pattern of the thread end logged in advance, the both sides of the thread end of pattern match, the regional area generation left and right portion inspection door of ring-type inspection door.When the part exceeding the deep or light difference of regulation and the dark of area being detected in this left and right portion inspection door, the part that this is dark is judged to be defect.
Description
Technical field
The present invention relates to a kind of check the oral area of the containers such as vial screw thread and end face have container mouth portion inspection method and the device of zero defect (breakage), especially relate to the container mouth portion inspection method and device that can check with the container in conveyor conveying.
Background technology
Following patent documentation 1 discloses the device of the screw thread checking the container in being carried by conveyor.It possesses reflection from the catoptron of the light of the outer peripheral face of container finish and the camera taken the light from catoptron, threaded top to the image image processing apparatus of terminal that reflects photographed by camera is processed, the pixel of observing in image becomes the part of bright pixel from dark pixel or becomes the part of dark pixel from bright pixel, by this from secretly brightening or being judged to be the top of screw thread from the part of bright dimmed pixel or being formed at the defect (breakage) of screw thread.
Prior art document
Patent documentation 1: Japanese Unexamined Patent Publication 2010-151473 publication
Invent problem to be solved
Above-mentioned existing apparatus due to by from secretly brightening or being judged to be top or the defect of screw thread from bright dimmed part, so there is the problem that can not find the defect at the top of screw thread.And the defect of screw thread often betides the top of screw thread.
Summary of the invention
Problem of the present invention is, in checking with the oral area of the container in conveyor conveying, also can find the defect at the top of screw thread.
(technical scheme 1)
A kind of container mouth portion inspection method, is characterized in that comprising: utilize the step that camera is taken from the top of container container finish; The screw image of the ring-type in this shooting image generates the step of ring-type inspection door; In this ring-type inspection door search exceed the edge of the deep or light difference of regulation between the step of dark part; The step of thread end inspection door is generated at the regional area of the described ring-type inspection door comprising this dark part; The step of the thread end image mated with the login picture pattern of the thread end logged in advance is searched in this thread end inspection door; The regional area of the described ring-type inspection door in the both sides of the thread end of pattern match generates the step of left and right portion inspection door; And the dark part of threshold value detected in this left and right portion inspection door than regulation and exceed the step of this dark part of the area of regulation, the part darker than the threshold value of regulation by this and the dark part exceeding the area of regulation is judged to be defect.
The breakage of screw thread nearly all results from thread end (the screw thread process initial part of threaded upper end) and the 1st article of screw thread, and therefore, the defect (breakage) can being carried out screw thread by the image obtained from top shooting container finish is checked.The image photographed from top is simple image, so check that precision is high.
As described later, when thread end has breakage, the part dark with the image of common thread end is adjacent to produce dark part, therefore, by carrying out deep or light inspection at left and right portion inspection door, can measure the breakage of thread end.
(technical scheme 2)
In addition, the present invention, in the container mouth portion inspection method according to technical scheme 1, characterized by further comprising: the line of generation radial direction will be divided into the step of multiple segmentation inspection doors as the part beyond the described thread end inspection door of described ring-type inspection door; With detect the part darker than the threshold value of regulation at each this segmentation inspection door and exceed the step of this dark part of the area of regulation, the part darker than the threshold value of regulation by this and the dark part exceeding the area of regulation is judged to be defect.
Thus, the breakage in the general portion beyond thread end can be detected accurately at the 1st article of screw thread.
(technical scheme 3)
In addition, the present invention, in the container mouth portion inspection method according to technical scheme 1, characterized by further comprising: the region segmentation of the ring-type comprising described ring-type inspection door is become the step of multiple neighboring detection segmentation inspection doors by the line of generation radial direction; With outside-in each this neighboring detection segmentation inspection door searched for and the step of the position of neighboring more than detecting the lightness becoming regulation, when the difference of the distance from position, neighboring to center of adjacent neighboring detection segmentation inspection door exceedes the threshold value of regulation, be judged to be defectiveness.
Thus, in the 1st article of screw thread, the breakage in thread periphery portion can be detected accurately.
(technical scheme 4)
In addition, the invention provides a kind of container finish testing fixture, it is characterized in that comprising: illumination, exposure cage oral area; Camera, from top shooting container finish; Inspection door testing agency, the screw image of the ring-type of described inspection door testing agency in the mouth images photographed by this camera generates ring-type inspection door, in this ring-type inspection door search exceed the edge of the deep or light difference of regulation between dark part, generate thread end inspection door at the regional area of the described ring-type inspection door comprising this dark part, in this thread end inspection door, search for the thread end image mated with the login picture pattern of the thread end logged in advance; And damage testing mechanism of thread end left and right portion, damage testing mechanism of described thread end left and right portion generates left and right portion inspection door at the regional area of the both sides of the thread end of pattern match, described ring-type inspection door, in this left and right portion inspection door, detect the dark part of threshold value than regulation and exceed this dark part of the area of regulation, the part darker than the threshold value of regulation by this and the dark part exceeding the area of regulation is judged to be defect.
Apparatus of the present invention check, so can detect the breakage of thread end accurately due to the inspection direction along technical scheme 1.
(technical scheme 5)
In addition, the present invention is in the container finish testing fixture according to technical scheme 4, characterized by further comprising: damage testing mechanism of screw thread general portion, the line of damage testing mechanism of described screw thread general portion generation radial direction is divided into multiple segmentation inspection doors using as the part beyond the described thread end inspection door of described ring-type inspection door, detect the part darker than the threshold value of regulation at each this segmentation inspection door and exceed this dark part of the area of regulation, the part darker than the threshold value of regulation by this and the dark part exceeding the area of regulation is judged to be defect.
Apparatus of the present invention check, so can detect the breakage in the general portion beyond thread end accurately at the 1st article of screw thread due to the inspection direction along technical scheme 2.
(technical scheme 6)
In addition, the present invention is in the container finish testing fixture according to technical scheme 4, characterized by further comprising: thread periphery damage testing mechanism, the region segmentation of the ring-type comprising described ring-type inspection door is become multiple neighboring detection segmentation inspection doors by the line of described thread periphery damage testing mechanism generation radial direction, outside-in is searched for this neighboring detection segmentation inspection door and the position of neighboring more than detecting the lightness becoming regulation, when the difference of the distance from position, neighboring to center of adjacent neighboring detection segmentation inspection door exceedes the threshold value of regulation, be judged to be defectiveness.
Apparatus of the present invention check, so can detect the breakage in thread periphery portion accurately at the 1st article of screw thread due to the inspection direction along technical scheme 3.
(technical scheme 7)
In addition, the present invention, in the container finish testing fixture according to technical scheme 4, is characterized in that: described illumination and camera are located on the conveying mechanism of container, and camera is taken the container carried by conveying mechanism.
Apparatus of the present invention can check with the oral area of the container in the conveyings such as conveyor accurately.
Invention effect
Oral area inspection method of the present invention and defect (breakage) inspection of device owing to utilizing the simple image taking container finish gained from top to carry out screw thread, so can check accurately.In addition, by carrying out the deep or light inspection in left and right portion inspection door, the breakage of thread end can be detected accurately.
Accompanying drawing explanation
Fig. 1 is the block diagram of the container finish testing fixture 1 of embodiment.
Fig. 2 is the key diagram of embodiment of the present invention.
Fig. 3 is the sectional view of dome illumination.
Fig. 4 is the process flow diagram of container finish testing fixture 1.
Fig. 5 is outboard profile and the shooting image schematic diagram of flawless container finish.
Fig. 6 is outboard profile and the shooting image schematic diagram of defective container finish.
Fig. 7 is the process flow diagram generating inspection door.
Fig. 8 is the key diagram detecting outer peripheral skirt.
Fig. 9 is the key diagram detecting inner circumferential rounded edge.
Figure 10 is the key diagram generating ring-type inspection door 22.
Figure 11 is the process flow diagram detecting the portion's breakage of thread end left and right.
Figure 12 is the key diagram detecting the portion's breakage of thread end left and right.
Figure 13 is the process flow diagram detecting screw thread general portion breakage.
Figure 14 is the key diagram detecting screw thread general portion breakage.
Figure 15 is the process flow diagram detecting the breakage of thread periphery portion.
Figure 16 is the key diagram detecting the breakage of thread periphery portion.
Figure 17 is the process flow diagram detecting top part breakage.
Figure 18 is the key diagram detecting top part breakage.
Embodiment
As shown in Figure 1, the container finish testing fixture 1 of embodiment has camera 11, illumination 12, storer 10a, inspection door testing agency 2, damage testing mechanism of thread end left and right portion 3, damage testing mechanism of screw thread general portion 4, damage testing mechanism of thread periphery portion 5, top part damage testing mechanism 6.Inspection door testing agency 2 is made up of ring-type inspection door testing agency 2a and thread end position detecting device 2b.Light from illumination 12 is reflected by container finish end face, screw thread etc., takes this reflected light by camera 11.The image photographed is stored in storer 10a.The view data read from storer 10a carries out the generation of ring-type inspection door, the detection of thread end position by inspection door testing agency 2.In addition, view data is fed to damage testing mechanism of thread end left and right portion 3, damage testing mechanism of screw thread general portion 4, damage testing mechanism of thread periphery portion 5, top part damage testing mechanism 6 carry out every inspection.Under being judged to be underproof situation by each pick-up unit, export defective signal.Defective signal, except being recorded in except in storer, can also be used for the work of warning device or the work etc. of defective container remover.
Camera 11 such as can use commercially available high regime sensor camera.As long as illumination can to container finish without irradiating light unevenly, then can be any illumination, such as the illumination of red LED dome is very applicable.Fig. 3 is the sectional view of red dome illumination.At formation hole, the top 12b of dome reflecting body, arrange multiple red LED 12a in inner peripheral portion lower end, the red light of red LED 12a is reflected by dome reflecting body, irradiates downwards.
Storer 10a can use the storer being attached to personal computer (PC) or being connected with personal computer (PC).Inspection door testing agency 2, damage testing mechanism of thread end left and right portion 3, damage testing mechanism of screw thread general portion 4, damage testing mechanism of thread periphery portion 5, top part damage testing mechanism 6 carry out work by software in PC or connected I/O circuit.
As shown in Figure 2, oral area inspection of the present invention can be carried out the container in being carried by conveyor.Container 7 is (right direction) conveying in the direction of the arrow on conveyor 14.The conveyor surface of conveyor 14 is for guaranteeing that inspection precision is preferably colored as black.Conveyor 14 is provided with conveyor surface and often moves the scrambler 14a that predetermined distance just sends pulse.Above conveyor 14, be fixed with illumination 12 (dome illumination), and be fixed with camera 11 above illumination 12.In addition, immediately below camera, be provided with the Time Pick-off Units 15 of the container that detection arrives.Symbol 10 is PC, is wherein provided with storer 10a, inspection door testing agency 2, damage testing mechanism of thread end left and right portion 3, damage testing mechanism of screw thread general portion 4, damage testing mechanism of thread periphery portion 5 and top part damage testing mechanism 6.Symbol 13 is for getting rid of control part.
When container 7 is come immediately below camera 11, Time Pick-off Units 15 detects, and timing signal being sent to PC through getting rid of control part 13, pressing the shutter of camera 11.The image this photographed is sent to PC, carries out various inspection.Be judged to be underproof situation in inspection under, defective signal is sent into from PC and gets rid of control part 13, getting rid of control part 13 makes valve 13a work according to the pulse signal of the timing signal of Time Pick-off Units 15 and scrambler 14a with the timing in the front of this container arrival valve 13a, blow away defective container, and it is got rid of from conveyor 14.
Secondly, the summary of the process of container finish testing fixture 1 is described according to Fig. 4.
First such judgement is carried out:
Does is step 101...... data processing instructions ON?
If be YES, then enter into
Step 102...... data processing (detecting defective),
The generation of ring-type inspection door, the detection of thread end position is carried out by inspection door testing agency 2, meanwhile, checked by damage testing mechanism of thread end left and right portion 3, damage testing mechanism of screw thread general portion 4, damage testing mechanism of thread periphery portion 5, top part damage testing mechanism 6.Afterwards, such judgement is carried out:
Does is step 103...... defective?
If be YES, then enter into
Step 104...... records defective,
In the storer of PC, record underproof information, enter into step 105.If be NO, then directly enter into step 105.
From the next data processing instructions of step 105......
Turn back to step 101, for the above-mentioned process of next line Data duplication (step 101 ~ 105).
Fig. 5 relates to the flawless oral area of container 7, and epimere represents outboard profile, and hypomere represents the schematic diagram of the mouth images photographed by camera.In the outboard profile of epimere, symbol 70 is screw thread, and 71 is thread end, and 75 is end face.In the mouth images of hypomere, the 1st article of screw image 70a takes into bright ring-type, and within it, top plane view takes into slightly dark ring-type as 75a, and the outside of screw image 70a and top plane view are taken secretly as the inner side of 75a.In bright screw image 70a, 71a is darker for thread end image.
Fig. 6 relates to the defective oral area of container 7, and epimere represents outboard profile, and hypomere represents the schematic diagram of the mouth images photographed by camera.In the outboard profile of epimere, damaged 72 is the breakage of thread end, and breakage 73 is the breakage in the general portion of screw thread, and breakage 74 is the breakage in thread periphery portion, and damaged 76 is the breakage of end face.In the mouth images of hypomere, when thread end has damaged, dark breakage image 72a display adjacent with breakage image 72b.The breakage image 73a in the general portion of screw thread more secretly shows in the ring of screw image 70a.The breakage image 74a in thread periphery portion more secretly shows at the peripheral part of screw image 70a.The breakage image 76a of end face more secretly shows in the top plane view of ring-type is as 75a.
(generation inspection door)
Then, the generation of inspection door is described based on Fig. 7 ~ 12.
By step 201...... in screw image section sets periphery circle scope,
In mouth images, set the periphery circle scope 20 between inside and outside two circles represented with thick dot-and-dash line at the epimere of Fig. 8.Centre coordinate and the radius of these two dot-and-dash line circles preset.Automatically draw radially from the center of inside and outside two circles and check line, between inside and outside two circles, carry out inspection line edge detection.Using concentration from bright sharply dimmed, detect from the place secretly sharply brightened as edge.With detect from secretly brighten and the condition of maximum circle to carry out marginal check from cylindrical towards inner circle time, periphery, threaded portion is detected as edge, draws circle approx from the point of the periphery, threaded portion detected.So as shown in the hypomere of Fig. 8, the approximate circle detected is consistent in fact with the periphery of screw image 70a, forms periphery rounded edge 20a.
Whether can be detected the periphery rounded edge of screw image by step 202......, and calculate center?
As shown in Fig. 8 hypomere, judge whether to be formed with periphery rounded edge 20a and whether calculated its center O1, when NO, exporting defective signal as NG, when YES,
Carry out step 203...... with the center of periphery rounded edge for starting point, in the process of screw image section sets inner circumferential circle scope.This epimere at Fig. 9 sets the inner circumferential circle scope 21 between inside and outside two circles of being represented by thick dot-and-dash line.The center of these two dot-and-dash line circles is the center O1 of periphery rounded edge 20a, and radius presets.Afterwards, automatically draw radially from the center of inside and outside two circles and check line, between inside and outside two circles, carry out inspection line edge detection.When carrying out marginal check to detect from inner circle towards cylindrical from the condition of the maximum circle secretly brightened, as shown in the hypomere of Fig. 9, less dot-and-dash line circle is consistent in fact with the inner circumferential of screw image 70a, formation inner circumferential rounded edge 21a.Thus, the position of screw image 70a in shooting picture (coordinate) is determined.
Whether can be detected the inner circumferential rounded edge of screw image by step 204......, and calculate center?
As shown in Fig. 9 hypomere, judge whether form inner circumferential rounded edge 21a and calculated its center O2, when NO, export defective signal as NG, when YES, enter into step 205.
Above step 201 ~ step 204 processes in ring-type inspection door testing agency 2a, and later step 205 ~ step 209 processes in thread end position detecting device 2b.
Carrying out step 205...... is the process detecting thread end and set ring-type inspection door in screw image.Figure 10 is the example of ring-type inspection door 22.Like this, in order to be harmonious with periphery rounded edge 20a, ring-type inspection door 22 is preferably set to several amount of pixels (such as 2 ~ 3 pixels) more more outward than inner circumferential rounded edge 21a.
The dark part of the deep or light difference of more than regulation is detected in step 206......?
As shown by the arrows in Figure 10, in ring-type inspection door 22, along the circumferential direction carry out deep or light difference, search for from bright dimmed edge and right from the edge secretly brightened.Larger and the right interval at edge of deep or light difference, close to setting, is detected as thread end.The right interval at edge pre-determines.
By the section sets thread end inspection door that step 207...... is detecting,
As shown in figure 12, thread end inspection door 23 is set in the mode comprising the dark part detected.The size of thread end inspection door pre-determines.Afterwards, pass through
Step 208...... carries out pattern match with login image in thread end inspection door,
Detect the position of thread end.The symbol 77 of Figure 12 is the typical thread end image logged in, and carries out the pattern match of the image in thread end inspection door 23 with it.Pattern match ratio presets.Afterwards, carry out
Does step 209...... have the thread end image of the pattern match ratio exceeding setting?
Judgement, when pattern match, judging that this image is thread end, enter damage testing mechanism of thread end left and right portion 3, when only finding the image not exceeding pattern match ratio, exporting defective signal as NG.
(thread end left and right portion damage testing)
Then, based on Figure 11,12, thread end left and right portion damage testing is described.
By the left and right setting left and right portion inspection door of step 301...... at thread end,
Be adjacent to set left and right portion inspection door 24 with the left side of the thread end detected by pattern match and right side.The size of left and right portion inspection door 24 pre-determines.Afterwards, pass through
Step 302...... sets deep or light difference, the area threshold of left and right portion inspection door,
Threshold value in setting thread end left and right portion damage testing.Deep or light difference limen value specifically detects the pixel darker than set threshold value, and area threshold is the threshold number of pixels of the block of the dark pixel becoming below this deep or light difference limen value.Afterwards, pass through
Does step 303...... have the pixel darker than deep or light difference limen value at left and right portion inspection door?
In each left and right portion inspection door, judge whether the pixel of below deep or light difference limen value, when NO, be judged to be certified products (thread end left and right portion is without breakage), when YES, pass through
Does step 304...... have at left and right portion inspection door the image having exceeded area threshold?
Judge whether the pixel count becoming the block of below deep or light difference limen value has exceeded area threshold, when NO, be judged to be certified products (thread end left and right portion is without breakage), when YES, be judged as that there is breakage (defect) in thread end left and right portion.
Figure 12 is the example that thread end has damaged situation, and in ring-type inspection door 22, breakage image 72a, 72b are dimmed.Breakage image 72a is the approximate shape logging in image 77, therefore pattern match, but owing to setting left and right portion inspection door 24 with being adjacent and checking, so be judged to be defectiveness by detecting breakage image 72b.In the present invention, the breakage of thread end is detected like this.
(screw thread general portion damage testing)
Next, based on Figure 13,14, screw thread general portion damage testing is described.
By the segmentation inspection door that ring-type inspection door is split to form by the line of step 401...... setting radial direction,
As shown in figure 14, generation radial direction line by ring-type inspection door 22, part beyond thread end inspection door 23 (part of pattern match) is divided into multiple segmentation inspection doors 25.Segmentation inspection door is by except thread end inspection door part.Afterwards, pass through
Deep or light difference, the area threshold of step 402...... setting segmentation inspection door,
Threshold value in setting screw thread general portion damage testing.Deep or light difference limen value specifically detects the pixel darker than set threshold value, and area threshold is the threshold number of pixels of the block of the dark pixel becoming below this deep or light difference limen value.Afterwards, pass through
Does step 403...... have the pixel darker than deep or light difference limen value at segmentation inspection door?
In each segmentation inspection door, judge whether the pixel of below deep or light difference limen value, when NO, be judged to be certified products (the general portion of screw thread is without breakage), when YES, pass through
Does step 404...... have at segmentation inspection door the image exceeding area threshold?
Judge whether the pixel count becoming the block of below deep or light difference limen value exceedes area threshold, when NO, is judged to be certified products (the general portion of screw thread is without breakage), when YES, is judged to be that there is breakage (defect) in the general portion of screw thread.
Shown in Figure 14 is the example having the situation of breakage image 73a because of the breakage 73 in the general portion of screw thread, because breakage image 73a is darker than other parts of segmentation inspection door, so be judged to be that there is breakage (defect) in the general portion of screw thread.
(thread periphery portion damage testing)
Secondly, based on Figure 15,16, thread periphery portion damage testing is described.
The neighboring detection segmentation inspection door annular section comprising ring-type inspection door is split to form by the line of step 501...... setting radial direction,
Neighboring detection segmentation inspection door 26 is set in mouth images.As shown in figure 16, annular section preferred thread periphery edge 20a now enters into centre.Neighboring is detected except thread end inspection door 23 (part of pattern match) part with segmentation inspection door 26.
Detected the light sensitivity detecting neighboring with the setting of segmentation inspection door in neighboring by step 502......,
As at Figure 16 hypomere with shown in thick arrow, outside-in is searched for neighboring detection segmentation inspection door, and detects and become the position of the neighboring of more than the lightness setting light sensitivity.Set by light sensitivity, can set and detect the high edge of deep or light difference or detect the low edge of deep or light difference.
The threshold value of the neighboring difference of adjacent neighboring detection segmentation inspection door is set by step 503......,
Calculate the distance (Figure 16 hypomere dotted arrow) from position, neighboring to centre coordinate that each neighboring detection inspection door is detected.By calculating the difference of the distance calculated each other at adjacent door at periphery complete cycle, calculate the concavo-convex of periphery.The threshold value of difference when being set with difference.Afterwards, pass through
Does step 504...... have the image exceeding neighboring difference limen value?
As shown with arrows in the hypomere at Figure 16, the lateral direction of inspection door is split to inward side to scanning from the detection of each neighboring, calculate the distance from the marginal position detected to centre coordinate, and adjacent each neighboring detection segmentation inspection door is asked poor, judge whether this difference exceedes threshold value, when NO, be judged to be certified products (thread periphery portion is without breakage), when YES, be judged to be that there is breakage (defect) in thread periphery portion.
What Figure 16 hypomere represented is the situation having breakage image 74a because of the breakage 74 in thread periphery portion, thus, the edge detected of the neighboring detection segmentation inspection door of this part is shorter than this adjacent length to the length at center, detects that thread periphery portion is damaged.
(end face damage testing)
Secondly, based on Figure 17,18, top part damage testing is described.
The process of end face segmentation inspection door mouth top part is split to form with the line of radial direction by step 601...... setting,
The top plane view of the ring-type in mouth images is as the end face inspection door 27 setting ring-type on 75a.The establishing method of end face inspection door 27 is varied, such as, have the periphery circle of radius ratio inner circumferential rounded edge 21a fractional pixel being set to end face inspection door, the circle of its also little suitable pixel count of radius ratio is set to the method for inner circumferential.In addition, with the line of radial direction, end face inspection door 27 is split, set end face segmentation inspection door 27a as shown in figure 18.Afterwards, pass through
Step 602...... sets deep or light difference, the area threshold of end face segmentation inspection door,
Threshold value in setting end face damage testing.Deep or light difference limen value specifically detects the pixel darker than set threshold value or the pixel brighter than set threshold value, and area threshold is the threshold number of pixels becoming the pixel darker than this deep or light difference limen value or be worth the block of bright pixel than this deep or light difference limen.Afterwards, pass through
Does step 603...... have at end face segmentation inspection door the image exceeding deep or light difference limen value?
In each end face segmentation inspection door, judge whether the pixel exceeding deep or light difference limen value, when NO, be judged to be certified products (end face is without breakage), when YES, pass through
Does step 604...... have at end face segmentation inspection door the image having exceeded area threshold?
Judge whether the pixel count exceeding the block of deep or light difference limen value exceedes area threshold, when NO, is judged to be certified products (end face is without breakage), when YES, is judged to be that end face has breakage (defect).
What Figure 18 represented is the example having the situation of breakage image 76a because of the breakage 76 of end face, because breakage image 76a is darker than the other parts of end face segmentation inspection door, is therefore judged to be that end face has breakage (defect).
Be judged to be NG by inspection door testing agency 2, or be judged to be that defective container utilizes the valve 13a of Fig. 2 to get rid of by the arbitrary pick-up unit in damage testing mechanism of thread end left and right portion 3, damage testing mechanism of screw thread general portion 4, damage testing mechanism of thread periphery portion 5, top part damage testing mechanism 6.
Symbol description
1 oral area testing fixture
10 personal computers
10a storer
11 cameras
12 dome illuminations
13 get rid of control part
13a valve
14 conveyors
14a scrambler
15 Time Pick-off Units
2 inspection door testing agencies
2a ring-type inspection door testing agency
2b thread end position detecting device
20 periphery circle scopes
20a periphery rounded edge
21 inner circumferential circle scopes
21a inner circumferential rounded edge
22 ring-type inspection doors
23 thread end inspection doors
About 24 inspection doors
25 segmentation inspection doors
26 neighborings are detected with segmentation door
27 end face inspection doors
27a end face segmentation inspection door
3 thread end left and right portion damage testing mechanisms
4 damage testing mechanisms of screw thread general portion
5 damage testing mechanisms of thread periphery portion
6 top part damage testing mechanisms
7 vials
70 screw threads
70a screw image
71 thread end
71a thread end image
72 is damaged
72a breakage image
72b breakage image
73 is damaged
73a breakage image
74 is damaged
74a breakage image
75 end faces
75a top plane view picture
76 is damaged
76a breakage image
77 log in image
Claims (7)
1. a container mouth portion inspection method, is characterized in that comprising:
Utilize the step that camera is taken from the top of container container finish;
The screw image of the ring-type in this shooting image generates the step of ring-type inspection door;
In this ring-type inspection door search exceed the edge of the deep or light difference of regulation between the step of dark part;
The step of thread end inspection door is generated at the regional area of the described ring-type inspection door comprising this dark part;
The step of the thread end image mated with the login picture pattern of the thread end logged in advance is searched in this thread end inspection door;
The regional area of the described ring-type inspection door in the both sides of the thread end of pattern match generates the step of left and right portion inspection door; And
In this left and right portion inspection door, detect the dark part of threshold value than regulation and exceed the step of this dark part of the area of regulation,
By this than the dark part of threshold value of regulation and the dark part exceeding the area of regulation is judged to be defect.
2. container mouth portion inspection method according to claim 1, characterized by further comprising:
The line of generation radial direction will be divided into the step of multiple segmentation inspection doors as the part beyond the described thread end inspection door of described ring-type inspection door; With
Detect the part darker than the threshold value of regulation at each this segmentation inspection door and exceed the step of this dark part of the area of regulation,
By this than the dark part of threshold value of regulation and the dark part exceeding the area of regulation is judged to be defect.
3. container mouth portion inspection method according to claim 1, characterized by further comprising:
The region segmentation of the ring-type comprising described ring-type inspection door is become the step of multiple neighboring detection segmentation inspection doors by the line of generation radial direction; With
Outside-in is searched for each this neighboring detection segmentation inspection door and the step of the position of neighboring more than detecting the lightness becoming regulation,
When the difference of the distance from position, neighboring to center of adjacent neighboring detection segmentation inspection door exceedes the threshold value of regulation, be judged to be defectiveness.
4. a container finish testing fixture, is characterized in that comprising:
Illumination, exposure cage oral area;
Camera, from top shooting container finish;
Inspection door testing agency, the screw image of the ring-type of described inspection door testing agency in the mouth images photographed by this camera generates ring-type inspection door, in this ring-type inspection door search exceed the edge of the deep or light difference of regulation between dark part, generate thread end inspection door at the regional area of the described ring-type inspection door comprising this dark part, in this thread end inspection door, search for the thread end image mated with the login picture pattern of the thread end logged in advance; And
Damage testing mechanism of thread end left and right portion, damage testing mechanism of described thread end left and right portion generates left and right portion inspection door at the regional area of the both sides of the thread end of pattern match, described ring-type inspection door, in this left and right portion inspection door, detect the dark part of threshold value than regulation and exceed this dark part of the area of regulation, the part darker than the threshold value of regulation by this and the dark part exceeding the area of regulation is judged to be defect.
5. container finish testing fixture according to claim 4, characterized by further comprising:
Damage testing mechanism of screw thread general portion, the line of damage testing mechanism of described screw thread general portion generation radial direction is divided into multiple segmentation inspection doors using as the part beyond the described thread end inspection door of described ring-type inspection door, detect the part darker than the threshold value of regulation at each this segmentation inspection door and exceed this dark part of the area of regulation, the part darker than the threshold value of regulation by this and the dark part exceeding the area of regulation is judged to be defect.
6. container finish testing fixture according to claim 4, characterized by further comprising:
Thread periphery damage testing mechanism, the region segmentation of the ring-type comprising described ring-type inspection door is become multiple neighboring detection segmentation inspection doors by the line of described thread periphery damage testing mechanism generation radial direction, outside-in is searched for this neighboring detection segmentation inspection door and the position of neighboring more than detecting the lightness becoming regulation, when the difference of the distance from position, neighboring to center of adjacent neighboring detection segmentation inspection door exceedes the threshold value of regulation, be judged to be defectiveness.
7. container finish testing fixture according to claim 4, is characterized in that: described illumination and camera are located on the conveying mechanism of container, and camera is taken the container carried by conveying mechanism.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2011/067742 WO2013018207A1 (en) | 2011-08-03 | 2011-08-03 | Container mouth portion inspection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103718025A CN103718025A (en) | 2014-04-09 |
| CN103718025B true CN103718025B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180072521.2A Expired - Fee Related CN103718025B (en) | 2011-08-03 | 2011-08-03 | Container mouth portion inspection method and device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4986255B1 (en) |
| KR (1) | KR101587982B1 (en) |
| CN (1) | CN103718025B (en) |
| WO (1) | WO2013018207A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018158824A1 (en) * | 2017-02-28 | 2018-09-07 | 東洋ガラス株式会社 | Container inspection device and container inspection method |
| JP6983604B2 (en) * | 2017-09-28 | 2021-12-17 | 東洋ガラス株式会社 | Container mouth inspection device and container mouth inspection method |
| CN112700440B (en) * | 2021-01-18 | 2022-11-04 | 上海闻泰信息技术有限公司 | Object defect detection method and device, computer equipment and storage medium |
| JP2023094962A (en) * | 2021-12-24 | 2023-07-06 | 東レエンジニアリング株式会社 | Wafer external appearance inspecting device |
| CN116858838B (en) * | 2023-05-25 | 2024-03-19 | 苏州誉阵自动化科技有限公司 | Bottle defect detection system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4831250A (en) * | 1986-10-13 | 1989-05-16 | Kirin Beer Kabushiki Kaisha | Apparatus for detecting defects on bottle mouth with screw thread |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316647A (en) * | 1988-03-31 | 1989-12-21 | Fuji Electric Co Ltd | Container inspecting method |
| JP2973663B2 (en) * | 1991-12-10 | 1999-11-08 | 富士電機株式会社 | Bottle mouth appearance inspection method |
| CA2228381A1 (en) * | 1995-08-04 | 1997-02-20 | Image Processing Systems, Inc. | Bottle thread inspection system and method of operating same |
| JPH0968504A (en) * | 1995-08-31 | 1997-03-11 | Toshiba Eng Co Ltd | Method and device for inspection of appearance of bottle mouth |
| JP4321696B2 (en) * | 2000-04-27 | 2009-08-26 | キリンテクノシステム株式会社 | Inspection area setting method for container inspection |
| JP2004271205A (en) * | 2003-03-05 | 2004-09-30 | Precision:Kk | Defect inspection device of container mouth part |
| JP2010151473A (en) | 2008-12-24 | 2010-07-08 | Kirin Techno-System Co Ltd | Apparatus for inspecting screw-top bottle |
-
2011
- 2011-08-03 WO PCT/JP2011/067742 patent/WO2013018207A1/en active Application Filing
- 2011-08-03 CN CN201180072521.2A patent/CN103718025B/en not_active Expired - Fee Related
- 2011-08-03 KR KR1020147002786A patent/KR101587982B1/en active IP Right Grant
- 2011-08-03 JP JP2011546515A patent/JP4986255B1/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4831250A (en) * | 1986-10-13 | 1989-05-16 | Kirin Beer Kabushiki Kaisha | Apparatus for detecting defects on bottle mouth with screw thread |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4986255B1 (en) | 2012-07-25 |
| KR101587982B1 (en) | 2016-01-22 |
| JPWO2013018207A1 (en) | 2015-03-02 |
| CN103718025A (en) | 2014-04-09 |
| KR20140031392A (en) | 2014-03-12 |
| WO2013018207A1 (en) | 2013-02-07 |
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