CN103718025A - Container mouth portion inspection method and device - Google Patents
Container mouth portion inspection method and device Download PDFInfo
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- CN103718025A CN103718025A CN201180072521.2A CN201180072521A CN103718025A CN 103718025 A CN103718025 A CN 103718025A CN 201180072521 A CN201180072521 A CN 201180072521A CN 103718025 A CN103718025 A CN 103718025A
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- inspection door
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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 present invention enables accurate inspection of a defect at a start end of a screw of a glass bottle. An image of a container mouth portion is captured by a camera from above a container, a ring-shaped inspection gate is created on a ring-shaped screw image in the captured image, a dark section having a light/shade difference that exceeds a predetermined light/shade difference is searched for in the ring-shaped inspection gate, and a screw end inspection gate is created in a partial region of the ring-shaped inspection gate including the dark section. In the screw end inspection gate, a screw end image that pattern-matches a preregistered screw end registration image is searched for, and right/left portion inspection gates are created respectively in the partial regions of the ring-shaped inspection gates on both sides of the pattern-matching screw end. When a dark section having a light/shade difference and an area that exceed predetermined light/shade difference and area is detected in the right/left portion inspection gates, the dark section is determined as a defect.
Description
Technical field
The present invention relates to a kind of screw thread of the oral area that checks the containers such as vial and container finish inspection method and the device that end face has zero defect (breakage), especially relate to container finish inspection method and the device that can check the container in carrying with conveyor.
Background technology
Following patent documentation 1 discloses the device that checks the screw thread of the container in conveyor is carried.It possesses reflection from the reflection of light mirror of the outer peripheral face of container finish with to the camera of taking from the light of catoptron, by by camera to threaded top to the image of terminal that reflects with image processing apparatus, process, observe pixel in image and become the part of bright pixel or from bright pixel, become the part of dark pixel from dark pixel, the defect (breakage) by this from secretly brightening or being judged to be the top of screw thread or being formed at screw thread from the part of bright dimmed pixel.
Prior art document
Patent documentation 1: TOHKEMY 2010-151473 communique
Invent problem to be solved
Above-mentioned existing apparatus is 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 of the defect at the top that can not find 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, during the oral area of the container in carrying with conveyor checks, also can find the defect at the top of screw thread.
(technical scheme 1)
A container finish inspection method, is characterized in that comprising: the step of utilizing camera from the top of container, container finish to be taken; On the screw image of the ring-type in this photographic images, generate the step of ring-type inspection door; In this ring-type inspection door, search surpasses the step of the dark part of the deep or light difference of stipulating; At the regional area of the described ring-type inspection door that comprises this dark part, generate the step of thread end inspection door; The step of the thread end image that search is mated with the login picture pattern of the thread end of logining in advance in this thread end inspection door; At the regional area of the described ring-type inspection door of the both sides of the thread end of images match, generate the step of left and right portion inspection door; And in this left and right portion inspection door, detect the step that surpasses the deep or light difference of regulation and the dark part of area, this deep or light difference over regulation and the dark part of area are judged to be to defect.
The breakage of screw thread nearly all results from thread end (the screw thread processing initial part of threaded upper end) and the 1st screw thread, and therefore, the defect (breakage) that can carry out by the image obtaining from top shooting container finish screw thread checks.The image photographing 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, according in the container finish inspection method described in technical scheme 1, characterized by further comprising: generate with the line of radial direction the part beyond the described thread end inspection door as described ring-type inspection door is divided into a plurality of steps of cutting apart inspection door that form; With the step of respectively cutting apart inspection door at this and detect to surpass the deep or light difference of regulation and the dark part of area, this is surpassed to deep or light difference of regulation and the dark part of area is judged to be defect.
Thus, can detect accurately at the 1st screw thread the breakage of thread end general portion in addition.
(technical scheme 3)
In addition, the present invention, according in the container finish inspection method described in technical scheme 1, characterized by further comprising: generate with the line of radial direction and become a plurality of neighborings that form to detect by the step of cutting apart inspection door the Region Segmentation of the ring-type that comprises described ring-type inspection door; With outside-in, this each neighboring is detected with cutting apart the step that the position of the neighboring more than lightness that becomes regulation was searched for and detected to inspection door, in adjacent neighboring, detect with cut apart inspection door from position, neighboring till the difference of the distance at center while surpassing the threshold value of regulation, is judged to be defectiveness.
Thus, can in the 1st screw thread, detect accurately the breakage of screw thread peripheral part.
(technical scheme 4)
In addition, the present invention, according in the container finish inspection method described in technical scheme 1, characterized by further comprising: the end face inspection door and the generation that on the image of the oral area end face of the ring-type in described photographic images, generate ring-type are divided into by this end face inspection door the step that a plurality of end faces that form are cut apart inspection door with the line of radial direction; Detect with cutting apart at this each end face in inspection door the step that surpasses the deep or light difference of regulation and the dark part of area or bright part, this is surpassed to deep or light difference of regulation and the dark part of area or bright part and be judged to be defect.
Thus, can detect accurately the breakage of oral area end face.
(technical scheme 5)
In addition, the invention provides a kind of container finish testing fixture, it is characterized in that comprising: illumination, exposure cage oral area; Camera, takes container finish from top; Inspection door testing agency, described inspection door testing agency by this camera to mouth images in the screw image of ring-type on generate ring-type inspection door, in this ring-type inspection door, search surpasses the dark part of the deep or light difference of regulation, regional area at the described ring-type inspection door that comprises this dark part generates thread end inspection door, the thread end image that search is mated with the login picture pattern of the thread end of logining in advance in this thread end inspection door; And damaged testing agency of thread end left and right portion, damaged testing agency of described thread end left and right portion generates left and right portion inspection door at regional areas both sides, described ring-type inspection door of the thread end of pattern match, in this left and right portion inspection door, detect and surpass the deep or light difference of regulation and the dark part of area, this deep or light difference over regulation and the dark part of area are judged to be to defect.
Apparatus of the present invention are because the inspection direction along technical scheme 1 checks, so can detect accurately the breakage of thread end.
(technical scheme 6)
In addition, the present invention is according in the container finish testing fixture described in technical scheme 5, characterized by further comprising: damaged testing agency of the general portion of screw thread, damaged testing agency of the general portion of described screw thread generate with the line of radial direction by described ring-type inspection door be described thread end inspection door part be in addition divided into a plurality of form cut apart inspection door, at this, respectively cut apart inspection door and detect over the deep or light difference of regulation and the dark part of area, this deep or light difference over regulation and the dark part of area are judged to be to defect.
Apparatus of the present invention are because the inspection direction along technical scheme 2 checks, so can detect accurately at the 1st screw thread the breakage of thread end general portion in addition.
(technical scheme 7)
In addition, the present invention is according in the container finish testing fixture described in technical scheme 5, characterized by further comprising: the damaged testing agency of screw thread periphery, the damaged testing agency of described screw thread periphery generates with the line of radial direction and becomes a plurality of neighborings that form to detect with cutting apart inspection door the Region Segmentation of the ring-type that comprises described ring-type inspection door, outside-in detects with cutting apart the position that the neighboring more than lightness that becomes regulation was searched for and detected to inspection door this neighboring, in adjacent neighboring, detect with cut apart inspection door from position, neighboring till the difference of the distance at center while surpassing the threshold value of regulation, be judged to be defectiveness.
Apparatus of the present invention are because the inspection direction along technical scheme 3 checks, so can detect accurately at the 1st screw thread the breakage of screw thread peripheral part.
(technical scheme 8)
In addition, the present invention is according in the container finish testing fixture described in technical scheme 5, characterized by further comprising: the damaged testing agency of end face, on the image of the oral area end face of the ring-type of the damaged testing agency of described end face in described photographic images, generate the end face inspection door of ring-type, generating line with radial direction is divided into a plurality of end faces that form by this end face inspection door and cuts apart inspection door, at this end face, cut apart in inspection door and detect and surpass deep or light difference and the dark part of area or the bright part of stipulating, this is surpassed to the deep or light difference of regulation and the dark part of area or bright part and be judged to be defect.
Apparatus of the present invention are because the inspection direction along technical scheme 4 checks, so can detect accurately the breakage of oral area end face.
(technical scheme 9)
In addition, the present invention, according in the container finish testing fixture described in technical scheme 5, is characterized in that: described illumination and camera are located on the conveying mechanism of container, and camera is taken the container of being carried by conveying mechanism.
Apparatus of the present invention can check the oral area of the container with in the conveyings such as conveyor accurately.
Invention effect
Oral area inspection method of the present invention and device are owing to utilizing the simple image of taking container finish gained from top to carry out defect (breakage) inspection of screw thread, so can check accurately.In addition, by carrying out the deep or light inspection in left and right portion inspection door, can detect accurately the breakage of thread end.
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 photographic images schematic diagram of flawless container finish.
Fig. 6 is outboard profile and the photographic images schematic diagram of defective container finish.
Fig. 7 is the process flow diagram that generates inspection door.
Fig. 8 is the key diagram that detects outer peripheral skirt.
Fig. 9 is the key diagram of all rounded edge in detecting.
Figure 10 is the key diagram that generates ring-type inspection door 22.
Figure 11 is the process flow diagram that detects the breakage of thread end left and right portion.
Figure 12 is the key diagram that detects the breakage of thread end left and right portion.
Figure 13 is the process flow diagram that detects the breakage of the general portion of screw thread.
Figure 14 is the key diagram that detects the breakage of the general portion of screw thread.
Figure 15 is the process flow diagram that detects the breakage of screw thread peripheral part.
Figure 16 is the key diagram that detects the breakage of screw thread peripheral part.
Figure 17 is the process flow diagram that detects top part breakage.
Figure 18 is the key diagram that detects 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, damaged testing agency 3 of thread end left and right portion, damaged testing agency 4 of the general portion of screw thread, the damaged testing agency 5 of screw thread peripheral part, the damaged testing agency 6 of top part.Inspection door testing agency 2 consists of the ring-type inspection door 2a of testing agency and thread end position detecting device 2b.Light from illumination 12 is reflected by container finish end face, screw thread etc., by camera 11, takes this reflected light.The image photographing is stored in storer 10a.The view data of reading from storer 10a is carried 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 damaged testing agency 3 of thread end left and right portion, damaged testing agency 4 of the general portion of screw thread, the damaged testing agency 5 of screw thread peripheral part, the damaged testing agency 6 of top part and carries out every inspection.By each pick-up unit, be judged to be in underproof situation, exporting defective signal.Defective signal in being recorded in storer, can also be for the work of warning device or the work of defective container remover etc.
Storer 10a can be used the storer that is attached to personal computer (PC) or is connected with personal computer (PC).Inspection door testing agency 2, damaged testing agency 3 of thread end left and right portion, damaged testing agency 4 of the general portion of screw thread, the damaged testing agency 5 of screw thread peripheral part, the damaged testing agency 6 of top part 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 conveyor is carried.Container 7 is carried along the direction of arrow (right) on conveyor 14.The conveyor surface of conveyor 14 checks that for guaranteeing precision is preferably colored as black.On conveyor 14, be provided with the every mobile predetermined distance of conveyor surface and just send the scrambler 14a of pulse.Above conveyor 14, be fixed with the illumination of illumination 12(dome), and be fixed with camera 11 above illumination 12.In addition, under camera, be provided with the Time Pick-off Units 15 of surveying the container arriving.Symbol 10 is PC, is wherein provided with storer 10a, inspection door testing agency 2, damaged testing agency 3 of thread end left and right portion, damaged testing agency 4 of the general portion of screw thread, the damaged testing agency 5 of screw thread peripheral part and the damaged testing agency 6 of top part.Symbol 13 is for getting rid of control part.
When container 7 come camera 11 under time, Time Pick-off Units 15 is surveyed, and timing signal is sent to PC through getting rid of control part 13, presses the shutter of camera 11.The image that this is photographed is sent to PC, carries out various inspections.In inspection, be judged to be in underproof situation, defective signal is sent into and got rid of control part 13 from PC, the positive timing that eliminating control part 13 arrives valve 13a according to the pulse signal of the timing signal of Time Pick-off Units 15 and scrambler 14a with this container makes valve 13a work, blow away defective container, and it is got rid of from conveyor 14.
Secondly, the summary of the processing of container finish testing fixture 1 is described according to Fig. 4.
First carry out such judgement:
Step 101 ... does is data processing instructions ON?
YES, enters into if
Step 102 ... data processing (detecting defective),
By inspection door testing agency 2, carry out the generation of ring-type inspection door, the detection of thread end position, meanwhile, by damaged testing agency 3 of thread end left and right portion, damaged testing agency 4 of the general portion of screw thread, the damaged testing agency 5 of screw thread peripheral part, the damaged testing agency 6 of top part, check.Afterwards, carry out such judgement:
Step 103 ... defective?
YES, enters into if
Step 104 ... record defective,
In the storer of PC, record underproof information, enter into step 105.NO, directly enters into step 105 if.
From step 105 ... next data processing instructions
Turn back to step 101, for the above-mentioned processing of next line Data duplication (step 101～105).
Fig. 5 relates to the flawless oral area of container 7, and epimere represents outboard profile, hypomere represent by camera to the schematic diagram of mouth images.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 screw image 70a takes into bright ring-type, side within it, and top plane view is taken 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, hypomere represent by camera to the schematic diagram of mouth images.In the outboard profile of epimere, the breakage that breakage 72 is thread end, damaged 73 is the breakage of the general portion of screw thread, damaged 74 is the breakage of screw thread peripheral part, the breakage that breakage 76 is end face.In the mouth images of hypomere, at thread end, there is damaged in the situation that dark breakage image 72a demonstration adjacent with breakage image 72b.The breakage image 73a of the general portion of screw thread more secretly shows in the ring of screw image 70a.The breakage image 74a of screw thread peripheral part more secretly shows at the peripheral part of screw image 70a.The breakage image 76a of end face more secretly shows in as 75a in the top plane view of ring-type.
(generation inspection door)
Then, the generation based on Fig. 7～12 explanation inspection door.
By step 201 ... at screw image, partly set periphery circle scope,
In mouth images, at the epimere of Fig. 8, set the periphery circle scope 20 between inside and outside two circles that represent with thick dot-and-dash line.Centre coordinate and the radius of these two dot-and-dash line circles preset.From inside and outside Liang Geyuan center, automatically draw radially inspection line, between inside and outside two circles, check line edge detection.Using concentration from bright sharply dimmed, from the place secretly sharply brightening, as edge, detect.With detect from secretly brighten and the condition of maximum circle from cylindrical when inner circle is carried out marginal check, threaded portion periphery is detected as edge, from the point of detected threaded portion periphery, draws approx circle.So as shown in the hypomere of Fig. 8, the approximate circle detecting is consistent in fact with the periphery of screw image 70a, forms periphery rounded edge 20a.
By step 202 ... whether can detect the periphery rounded edge of screw image, 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, the in the situation that of NO, as NG, export defective signal, the in the situation that of YES,
Carry out step 203 ... take the center of periphery rounded edge is starting point, partly sets the processing of interior week circle scope at screw image.This epimere at Fig. 9 is set the round scope 21 of interior week between inside and outside two circles that represented by thick dot-and-dash line.These two center O 1 that dot-and-dash line Yuan center is periphery rounded edge 20a, radius presets.Afterwards, from inside and outside Liang Geyuan center, automatically draw radially inspection line, between inside and outside two circles, check line edge detection.With the condition that detects the maximum circle from secretly brightening from inner circle when cylindrical carries out marginal check, as shown in the hypomere of Fig. 9, less dot-and-dash line circle is consistent in fact with the interior week of screw image 70a, forms interior all rounded edge 21a.Thus, determine the position (coordinate) of screw image 70a in shooting picture.
By step 204 ... whether can detect interior all rounded edge of screw image, and calculate center?
As shown in Fig. 9 hypomere, judge whether to form interior all rounded edge 21a and calculated its center O2, the in the situation that of NO, as NG, export defective signal, the in the situation that of YES, enter into step 205.
Above step 201～step 204 is processed in the ring-type inspection door 2a of testing agency, and later step 205～step 209 is processed in thread end position detecting device 2b.
Carry out step 205 ... for detecting thread end, in screw image, set the processing of ring-type inspection door.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 than interior all rounded edge 21a and counts more in the outer part amount of pixels (for example 2～3 pixels).
In step 206 ... the dark part of deep or light difference more than regulation detected?
As shown by the arrows in Figure 10, along the circumferential direction carry out deep or light difference in ring-type inspection door 22, search is from bright dimmed edge and right from the edge that secretly brightens.Deep or light difference right interval larger and edge approaches setting, as thread end, detects.The right interval at edge pre-determines.
By step 207 ... in the part detecting, set thread end inspection door,
As shown in figure 12, with inclusion test to the mode of dark part set thread end inspection door 23.The size of thread end inspection door pre-determines.Afterwards, by
Step 208 ... in thread end inspection door, carry out pattern match with login image,
Detect the position of thread end.The symbol 77 of Figure 12 is the typical thread end image of login, carries out the pattern match of the image in thread end inspection door 23 with it.Pattern match ratio presets.Afterwards, carry out
Step 209 ... there is there the thread end image that surpasses the pattern match ratio of setting?
Judgement, the in the situation that of pattern match, judge that this image is thread end, enter damaged testing agency 3 of thread end left and right portion, in the situation that only find not exceed the image of pattern match ratio, as NG, export defective signal.
(thread end left and right portion is damaged to be detected)
Then, based on Figure 11, the damaged detection of 12 explanation thread end left and right portions.
By step 301 ... at setting left and right, the left and right of thread end portion inspection door,
Be adjacent to set left and right portion inspection door 24 with left side and the right side of the thread end detecting by pattern match.The size of left and right portion inspection door 24 pre-determines.Afterwards, by
Step 302 ... set deep or light poor, the area threshold of left and right portion inspection door,
Set the threshold value in the damaged detection of thread end left and right portion.The threshold value of deep or light difference particularly detects the pixel darker than the threshold value setting, and area threshold is the threshold number of pixels that becomes the piece of this dark pixel below deep or light difference limen value.Afterwards, by
Step 303 ... at left and right portion inspection door, have than the dark pixel of deep or light difference limen value?
In each left and right portion inspection door, judge whether the pixel below deep or light difference limen value, the in the situation that of NO, be judged to be certified products (thread end left and right portion is without breakage), the in the situation that of YES, by
Step 304 ... does inspection door have the image that has surpassed area threshold in left and right portion?
Whether the pixel count that judgement becomes the piece below deep or light difference limen value has surpassed area threshold, the in the situation that of NO, is judged to be certified products (thread end left and right portion is without breakage), and the in the situation that of YES, being judged as thread end left and right portion has breakage (defect).
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 shape of approximate login image 77, thus pattern match, but set left and right portion inspection door 24 and check owing to being adjacent, so be judged to be defectiveness by detecting breakage image 72b.In the present invention, detect like this breakage of thread end.
(the general portion of screw thread is damaged to be detected)
Next, based on Figure 13,14 damaged detections of the general portion of explanation screw thread.
By step 401 ... set the inspection door of cutting apart that line with radial direction is split to form ring-type inspection door,
As shown in figure 14, generate with the line of radial direction part ring-type inspection door 22, thread end inspection door 23(pattern match) part be in addition divided into a plurality of form cut apart inspection door 25.Cut apart inspection door by except thread end inspection door part.Afterwards, by
Step 402 ... deep or light poor, the area threshold of inspection door is cut apart in setting,
Set the threshold value in the damaged detection of the general portion of screw thread.The threshold value of deep or light difference particularly detects the pixel darker than the threshold value setting, and area threshold is the threshold number of pixels that becomes the piece of this dark pixel below deep or light difference limen value.Afterwards, by
Step 403 ... have than the dark pixel of deep or light difference limen value cutting apart inspection door?
Judge whether the pixel below deep or light difference limen value respectively cutting apart in inspection door, the in the situation that of NO, be judged to be certified products (the general portion of screw thread is without breakage), the in the situation that of YES, by
Step 304 ... there is there the image over area threshold cutting apart inspection door?
Whether the pixel count that judgement becomes the piece below deep or light difference limen value surpasses area threshold, the in the situation that of NO, is judged to be certified products (the general portion of screw thread is without breakage), and the in the situation that of YES, being judged to be the general portion of screw thread has breakage (defect).
Shown in Figure 14 is because of the breakage 73 of the general portion of screw thread, to have the example of the situation of breakage image 73a, because breakage image 73a is darker than other parts of cutting apart inspection door, so be judged to be the general portion of screw thread, has breakage (defect).
(screw thread peripheral part is damaged to be detected)
Secondly, based on Figure 15, the damaged detection of 16 explanation screw thread peripheral part.
By step 501 ... set neighboring detection that the line with radial direction is split to form the annular section that comprises ring-type inspection door with cutting apart inspection door,
In mouth images, setting neighboring detects with cutting apart inspection door 26.As shown in figure 16, in the middle of the preferred screw thread of annular section neighboring 20a now enters into.Neighboring is detected with cutting apart inspection door 26 by the part of thread end inspection door 23(pattern match) except part.
By step 502 ... in neighboring, detect with cutting apart inspection door and set the light sensitivity that detects neighboring,
As at Figure 16 hypomere with as shown in thick arrow, outside-in detects with cutting apart inspection door search neighboring, and detection becomes the position of the neighboring more than lightness of having set light sensitivity.By light sensitivity, set, can set and detect the edge that deep or light difference is high or detect the edge that deep or light difference is low.
By step 503 ... set adjacent neighboring and detect by the poor threshold value in neighboring of cutting apart inspection door,
Calculating detects by the detected distance (Figure 16 hypomere dotted arrow) from position, neighboring to centre coordinate of inspection door each neighboring.By calculate the poor of the distance calculate each other at adjacent door at periphery complete cycle, calculate the concavo-convex of periphery.The threshold value of the difference while being set with difference.Afterwards, by
Step 504 ... there is there the image over neighboring difference limen value?
If the hypomere at Figure 16 is with as shown in arrow, from each neighboring, detect with the lateral direction of cutting apart inspection door to the inside direction scan, the distance of calculating from the marginal position that detects to centre coordinate, and each adjacent neighboring is detected and asked poor with cutting apart inspection door, judge that whether this difference surpasses threshold value, the in the situation that of NO, is judged to be certified products (screw thread peripheral part is without breakage), the in the situation that of YES, being judged to be screw thread peripheral part has breakage (defect).
What Figure 16 hypomere represented is because of the breakage 74 of screw thread peripheral part, to have the situation of breakage image 74a, thus, the neighboring of this part is detected with the edge detecting of cutting apart inspection door short to this adjacent length of the Length Ratio at center, detects screw thread peripheral part damaged.
(end face is damaged to be detected)
Secondly, based on Figure 17, the damaged detection of 18 explanation screw thread peripheral part.
By step 601 ... setting is split to form mouth top part end face with the line of radial direction is cut apart the processing of inspection door,
The top plane view of the ring-type in mouth images is as the end face inspection door 27 of setting ring-type on 75a.The establishing method of end face inspection door 27 is varied, for example, have the periphery that the circle of all rounded edge 21a fractional pixels in radius ratio is made as to end face inspection door, the circle of its also little suitable pixel count of radius ratio is made as to the method in interior week.In addition, with the line of radial direction, end face inspection door 27 is cut apart, set as shown in figure 18 end face and cut apart inspection door 27a.Afterwards, by
Step 602 ... set end face and cut apart deep or light poor, the area threshold of inspection door,
Set the threshold value in the damaged detection of end face.The threshold value of deep or light difference particularly detects than the dark pixel of the threshold value setting or the pixel brighter than the threshold value setting, and area threshold is become than the dark pixel of this deep or light difference limen value or than this deep or light difference limen, be worth the threshold number of pixels of the piece of bright pixel.Afterwards, by
Step 603 ... at end face, cut apart inspection door and have the image that surpasses deep or light difference limen value?
At each end face, cut apart the pixel that judges whether to surpass deep or light difference limen value in inspection door, the in the situation that of NO, be judged to be certified products (end face is without breakage), the in the situation that of YES, by
Step 604 ... at end face, cut apart inspection door and have the image that has surpassed area threshold?
Whether the pixel count that judgement surpasses the piece of deep or light difference limen value surpasses area threshold, the in the situation that of NO, is judged to be certified products (end face is without breakage), and the in the situation that of YES, being judged to be end face has breakage (defect).
What Figure 18 represented is because of the breakage 76 of end face, to have the example of the situation of breakage image 76a, and because the other parts that breakage image 76a is cut apart inspection door than end face are bright or dark, being therefore judged to be end face has breakage (defect).
By inspection door testing agency 2, be judged to be NG, or the arbitrary pick-up unit in damaged testing agency 3 of thread end left and right portion, damaged testing agency 4 of the general portion of screw thread, the damaged testing agency 5 of screw thread peripheral part, the damaged testing agency 6 of top part is judged to be defective container and utilizes the valve 13a of Fig. 2 to get rid of.
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 interior all circle scopes
All rounded edge in 21a
22 ring-type inspection doors
23 thread end inspection doors
24 left and right portion inspection doors
25 cut apart inspection door
26 neighborings are detected with cutting apart door
27 end face inspection doors
27a end face is cut apart inspection door
Damaged testing agency of 3 thread end left and right portions
4 damaged testing agencies of the general portion of screw thread
The damaged testing agency of 5 screw thread peripheral parts
The damaged testing agency of 6 top parts
7 vials
70 screw threads
70a screw image
71 thread end
71a thread end image
72 breakages
72a breakage image
72b breakage image
73 breakages
73a breakage image
74 breakages
74a breakage image
75 end faces
75a top plane view picture
76 breakages
76a breakage image
77 login images
Claims (9)
1. a container finish inspection method, is characterized in that comprising:
The step of utilizing camera from the top of container, container finish to be taken;
On the screw image of the ring-type in this photographic images, generate the step of ring-type inspection door;
In this ring-type inspection door, search surpasses the step of the dark part of the deep or light difference of stipulating;
At the regional area of the described ring-type inspection door that comprises this dark part, generate the step of thread end inspection door;
The step of the thread end image that search is mated with the login picture pattern of the thread end of logining in advance in this thread end inspection door;
At the regional area of the described ring-type inspection door of the both sides of the thread end of images match, generate the step of left and right portion inspection door; And
In this left and right portion inspection door, detect the step that surpasses the deep or light difference of regulation and the dark part of area,
This deep or light difference over regulation and the dark part of area are judged to be to defect.
2. container finish inspection method according to claim 1, characterized by further comprising:
Generate with the line of radial direction the part beyond the described thread end inspection door as described ring-type inspection door is divided into a plurality of steps of cutting apart inspection door that form; With
At this, respectively cut apart inspection door and detect the step that surpasses the deep or light difference of regulation and the dark part of area,
This deep or light difference over regulation and the dark part of area are judged to be to defect.
3. container finish inspection method according to claim 1, characterized by further comprising:
Generating with the line of radial direction becomes a plurality of neighborings that form to detect by the step of cutting apart inspection door the Region Segmentation of the ring-type that comprises described ring-type inspection door; With
Outside-in detects with cutting apart the step that the position of the neighboring more than lightness that becomes regulation was searched for and detected to inspection door this each neighboring,
In adjacent neighboring, detect with cut apart inspection door from position, neighboring till the difference of the distance at center while surpassing the threshold value of regulation, is judged to be defectiveness.
4. container finish inspection method according to claim 1, characterized by further comprising:
On the image of the oral area end face of the ring-type in described photographic images, generate the end face inspection door of ring-type and generate, with the line of radial direction, this end face inspection door is divided into the step that a plurality of end faces that form are cut apart inspection door; With
At this each end face, cut apart in inspection door and to detect the step that surpasses the deep or light difference of regulation and the dark part of area or bright part,
This is surpassed to the deep or light difference of regulation and the dark part of area or bright part and be judged to be defect.
5. a container finish testing fixture, is characterized in that comprising:
Illumination, exposure cage oral area;
Camera, takes container finish from top;
Inspection door testing agency, described inspection door testing agency by this camera to mouth images in the screw image of ring-type on generate ring-type inspection door, in this ring-type inspection door, search surpasses the dark part of the deep or light difference of regulation, regional area at the described ring-type inspection door that comprises this dark part generates thread end inspection door, the thread end image that search is mated with the login picture pattern of the thread end of logining in advance in this thread end inspection door; And
Damaged testing agency of thread end left and right portion, damaged testing agency of described thread end left and right portion generates left and right portion inspection door at regional areas both sides, described ring-type inspection door of the thread end of pattern match, in this left and right portion inspection door, detect and surpass the deep or light difference of regulation and the dark part of area, this deep or light difference over regulation and the dark part of area are judged to be to defect.
6. container finish testing fixture according to claim 5, characterized by further comprising:
Damaged testing agency of the general portion of screw thread, damaged testing agency of the general portion of described screw thread generate with the line of radial direction by described ring-type inspection door be described thread end inspection door part be in addition divided into a plurality of form cut apart inspection door, at this, respectively cut apart inspection door and detect over the deep or light difference of regulation and the dark part of area, this deep or light difference over regulation and the dark part of area are judged to be to defect.
7. container finish testing fixture according to claim 5, characterized by further comprising:
The damaged testing agency of screw thread periphery, the damaged testing agency of described screw thread periphery generates with the line of radial direction and becomes a plurality of neighborings that form to detect with cutting apart inspection door the Region Segmentation of the ring-type that comprises described ring-type inspection door, outside-in detects with cutting apart the position that the neighboring more than lightness that becomes regulation was searched for and detected to inspection door this neighboring, in adjacent neighboring, detect with cut apart inspection door from position, neighboring till the difference of the distance at center while surpassing the threshold value of regulation, is judged to be defectiveness.
8. container finish testing fixture according to claim 5, characterized by further comprising:
The damaged testing agency of end face, on the image of the oral area end face of the ring-type of the damaged testing agency of described end face in described photographic images, generate the end face inspection door of ring-type, generating line with radial direction is divided into a plurality of end faces that form by this end face inspection door and cuts apart inspection door, at this end face, cut apart in inspection door and detect deep or light difference and the dark part of area or the bright part that surpasses regulation, this is surpassed to the deep or light difference of regulation and the dark part of area or bright part and be judged to be defect.
9. container finish testing fixture according to claim 5, is characterized in that: described illumination and camera are located on the conveying mechanism of container, and camera is taken the container of being 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 true CN103718025A (en) | 2014-04-09 |
| CN103718025B CN103718025B (en) | 2016-03-02 |
Family
ID=46678971
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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110431406A (en) * | 2017-02-28 | 2019-11-08 | 东洋玻璃株式会社 | The check device of container and the inspection method of container |
| CN116858838A (en) * | 2023-05-25 | 2023-10-10 | 苏州誉阵自动化科技有限公司 | Bottle defect detection system and method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| JP2004271205A (en) * | 2003-03-05 | 2004-09-30 | Precision:Kk | Defect inspection device of container mouth part |
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2011
- 2011-08-03 JP JP2011546515A patent/JP4986255B1/en active Active
- 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
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|---|---|---|---|---|
| US4831250A (en) * | 1986-10-13 | 1989-05-16 | Kirin Beer Kabushiki Kaisha | Apparatus for detecting defects on bottle mouth with screw thread |
| JPH01316647A (en) * | 1988-03-31 | 1989-12-21 | Fuji Electric Co Ltd | Container inspecting method |
| JPH05157707A (en) * | 1991-12-10 | 1993-06-25 | Fuji Electric Co Ltd | Appearance inspection method of bottle top |
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| CN110431406A (en) * | 2017-02-28 | 2019-11-08 | 东洋玻璃株式会社 | The check device of container and the inspection method of container |
| CN116858838A (en) * | 2023-05-25 | 2023-10-10 | 苏州誉阵自动化科技有限公司 | Bottle defect detection system and method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4986255B1 (en) | 2012-07-25 |
| WO2013018207A1 (en) | 2013-02-07 |
| JPWO2013018207A1 (en) | 2015-03-02 |
| KR20140031392A (en) | 2014-03-12 |
| KR101587982B1 (en) | 2016-01-22 |
| CN103718025B (en) | 2016-03-02 |
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