CN105910777A - Detecting system for sealing property of aluminum foil blister package - Google Patents
Detecting system for sealing property of aluminum foil blister package Download PDFInfo
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- CN105910777A CN105910777A CN201610506623.5A CN201610506623A CN105910777A CN 105910777 A CN105910777 A CN 105910777A CN 201610506623 A CN201610506623 A CN 201610506623A CN 105910777 A CN105910777 A CN 105910777A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/36—Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested
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Abstract
The invention relates to a detecting system for sealing property of an aluminum foil blister package. The detecting system comprises a vacuum air path system, an optical measuring system and a data collecting processing system, wherein the vacuum air path system comprises a sealing cavity, a vacuum pump, a pressure-relieving valve, a reversing valve and a pressure sensor; the reversing valve is respectively connected with the sealing cavity, the vacuum pump and the pressure-relieving valve through the pipelines; the pressure sensor is also mounted on a pipeline which is directly communicated with the sealing cavity; the bottom in the sealing cavity is used for loading a to-be-detected aluminum plastic bubble cap; the top surface of the sealing cavity is provided with a window sealed with a transparent material; the optical measuring system comprises a light source, a light source controller, an image sensor and a bracket; the light source and the image sensor are mounted on the same side of the sealing cavity through the bracket; included angles between the irradiating direction of the light source as well as the shooting direction of the image sensor and the inner bottom of the sealing cavity are 45-60 degrees; the light source controller is connected with the light source and is used for controlling the luminance of the light source; a data processing system comprises a computer connected with the image sensor.
Description
Technical field
Patent of the present invention relates to package encapsulation detection field, the sealing propertytest system of a kind of aluminium foil blister packaging, bag
Include algorithm and its hardware corollary apparatus.
Background technology
It is a kind of mass defect being difficult to and observing directly with eye that aluminum-plastic blister seals Air Leakage Defect, and this defect can make packaging product
Preservation and effect be substantially reduced, sealing will directly affect the quality of product, even affect use because product packs improper inefficacy
The health of person.This just requires aluminium-plastic bubble plate packing carries out gas leakage detection, but existing aluminium foil blister packaging Air Leakage Defect detection skill
Art can cause waste, implements time-consuming work consuming, and automaticity is low, can not meet growth requirement.To this end, research nothing
Damage, efficient aluminium foil blister sealing intelligent detecting method are imperative.
Traditional leak hunting method is to be immersed in coloured special liquid by the blister package product of sampling observation, then imposes negative pressure, logical
Cross observation colored liquid whether to penetrate into and judge gas leakage situation.Make to hunt leak in this way, first have to drain liquid ability
Judging whether Air Leakage Defect, such time is longer, and additionally its maximum has a problem in that whether examined product leaks gas all will be discarded,
Thus cause the biggest waste.More advanced leak detector is that examined product is placed in an airtight container pressurization or evacuation,
Whether being deformed by the aluminium foil surface of eye-observation blister package and judge whether gas leakage, the deficiency that this method exists is artificial
Error impact is relatively big, and result shows the most directly perceived.Therefore the sealing that a kind of aluminium foil blister lossless, quick is packed is provided
Detecting system becomes problem demanding prompt solution in prior art.
Summary of the invention
The sealing propertytest system of a kind of aluminium foil blister packaging, is characterized in that described detecting system is surveyed by vacuum air-channel system, optics
Amount system and data acquisition processing system composition,
Described vacuum air-channel system includes sealing cavity, vacuum pump, relief valve, reversal valve and pressure transducer, described reversal valve
Respectively by pipeline with seal cavity, vacuum pump and relief valve are connected, pressure transducer is also mounted at and seals cavity and directly connect
On logical pipeline, described sealing inside cavity bottom surface is used for placing aluminum-plastic blister to be detected, and the end face sealing cavity has employing thoroughly
The window of bright material seal,
Described optical measuring system includes light source, light source controller, imageing sensor and support, described light source and imageing sensor
It is arranged on sealing cavity homonymy, the direction of illumination of light source and the shooting direction of imageing sensor by support and seals at the bottom of inside cavity
The angle in face is 45-60 °；Described light source controller is connected with light source and controls the brightness of light source；Described data handling system bag
Include the computer being connected with imageing sensor.
The sealing propertytest system of described a kind of aluminium foil blister packaging, is characterized in that described imageing sensor is cmos image sensing
Device.
The sealing propertytest system of described a kind of aluminium foil blister packaging, is characterized in that described imageing sensor includes CCD camera and figure
As capture card, described image pick-up card is connected with computer.
The sealing propertytest system of described a kind of aluminium foil blister packaging, is characterized in that the fortune of aluminium-plastic bubble plate packing sealing propertytest system
Row comprises the following steps
1) image acquisition
Aluminum-plastic blister to be detected is lain on sealing cavity bottom surface, make aluminum-plastic blister upward；Start vacuum pump, adjustable change valve
Make vacuum pump connect with sealing cavity, after chamber vacuum degree to be sealed reaches requirement, make imageing sensor photographic light sources irradiate
Under aluminum-plastic blister image to be detected after transmit to computer；
2) image procossing, specifically includes following steps
A) enhancement process
The aluminum-plastic blister image hereinafter referred to as image to be detected collected is carried out greyscale transformation, and to strengthening warp
Cross the contrast of the image of greyscale transformation, increase retroreflective regions and the difference in non-reflective region；
B) binary conversion treatment
Image through enhancement process is carried out binary conversion treatment, the pixel of retroreflective regions is converted into white, by non-reflective
The pixel in region is converted into black；
C) piecemeal processes
I. the image through binary conversion treatment is carried out piecemeal process, make each image block only include an aluminum-plastic blister
Image；
Ii. the image of the aluminum-plastic blister in each image block is divided into side to light image and shady face image two parts,
Calculate respectively in side to light image as in the white pixel proportion of retroreflective regions and shady face image as reflective
The white pixel proportion in region,
Iii. white pixel proportion in the white pixel proportion in side to light image and reflective surface image is carried out
Relatively, when the two difference exceedes setting value, then judge that this aluminum-plastic blister is as air tight；
3) after having detected, closing vacuum pump, open relief valve, adjustable change valve makes sealing cavity connect with relief valve.
A kind of aluminium-plastic bubble plate packing sealing propertytest system that the present invention provides.Utilize differential air leak detection principle, to putting
The airtight cavity putting aluminum-plastic blister to be detected carries out evacuation.Owing to aluminium-plastic bubble plate packing is to encapsulate at ambient pressure, so working as aluminium foil
Blister package is in vacuum environment, and the aluminium foil surface encapsulating intact blister package can be heaved significantly owing to there is inside and outside differential pressure,
And the blister package aluminium foil surface that there is Air Leakage Defect has almost no change, it is maintained as the most slightly concave state.When aluminum-plastic blister bag
When dress is in vacuum environment, gas leakage packaging is different with air tight surface of package deformation quantity, different to the reflection of light.Work as light
When shining aluminium-plastic bubble plate packing surface with preferred 45-60 degree angle, under the gastight effect being packaged in negative pressure, surface is convex
Playing shape, its side to light has the retroreflective regions size existence of a large amount of light line reflection therefore side to light and shady face and is clearly distinguished from；And leak
The aluminium foil surface of gas is remained stationary, and the retroreflective regions size difference of its side to light and shady face is less.Utilize image processing techniques,
The vacuum aluminium-plastic bubble plate packing image collected is processed.Image procossing includes that image enhaucament, image binaryzation and image divide
The side to light of each aluminum-plastic blister image and shady face image can be compared thus automatically be judged whether it leaks gas by block.Significantly
Improve efficiency and the accuracy of aluminum-plastic blister detection, it is achieved that the automatization of the differentiation of aluminium-plastic bubble plate packing, there is noncontact,
In high precision, cheap for manufacturing cost and service life, the feature such as length, was suitable to actual application.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment population structure schematic diagram of aluminium-plastic bubble plate packing sealing propertytest system of the present invention；
In figure 1, vacuum pump, 2, image pick-up card, 3, reversal valve, 4, relief valve, 6, pressure transducer, 8, Pressure gauge, 9,
On and off switch, 10, power supply indicator, 11, seal cavity, 12, light source, 13, CCD camera, 14, support, 15, case
Body, 16, light source controller, 17, computer, 18, operating board
Detailed description of the invention
This patent is described in detail below in conjunction with embodiment and accompanying drawing thereof.Embodiment is to carry out premised on technical scheme described in this patent
Be embodied as, give detailed embodiment and process.But claims hereof protection domain is not limited to following reality
Execute example to describe.
The present invention provide aluminium-plastic bubble plate packing sealing propertytest system, it is characterized in that described detecting system by vacuum air-channel system,
Optical measuring system and data acquisition processing system composition,
Described vacuum air-channel system includes sealing cavity 11, vacuum pump 1, relief valve 4, reversal valve 3 and pressure transducer 6, institute
Stating reversal valve to be connected with sealing cavity, vacuum pump and relief valve by pipeline respectively, pressure transducer is also mounted at and annular seal space
On the pipeline that body directly connects, described sealing inside cavity bottom surface is used for placing aluminum-plastic blister to be detected, seals the end face tool of cavity
There is the window using transparent material to seal,
Described optical measuring system includes light source 12, light source controller 16, imageing sensor and support 14, described light source and figure
As sensor is arranged on sealing cavity homonymy, the direction of illumination of light source and the shooting direction of imageing sensor and annular seal space by support
The angle of body inner bottom surface is 45-60 °；Described light source controller is connected with light source and controls the brightness of light source；
Described data handling system includes the computer 17 being connected with imageing sensor.
The operation of described aluminium-plastic bubble plate packing sealing propertytest system, comprises the following steps
1) image acquisition
Aluminum-plastic blister to be detected is lain on sealing cavity bottom surface, make aluminum-plastic blister upward；Start vacuum pump, regulation commutation
Valve makes vacuum pump connect with sealing cavity, after chamber vacuum degree to be sealed reaches requirement, makes imageing sensor photographic light sources shine
Transmit to computer after aluminum-plastic blister image to be detected under penetrating；
2) image procossing, specifically includes following steps
A) enhancement process
The aluminum-plastic blister image to be detected (hereinafter referred to as image) collected is carried out greyscale transformation, and becomes through gray scale strengthening
The contrast of the image changed, increases retroreflective regions and the difference in non-reflective region；
B) binary conversion treatment
Image through enhancement process is carried out binary conversion treatment, the pixel of retroreflective regions is converted into white, by non-reflective region
Pixel be converted into black；
C) piecemeal processes
I. the image through binary conversion treatment is carried out piecemeal process, make each image block only include an aluminum-plastic blister
Image；
Ii. the image of the aluminum-plastic blister in each image block is divided into side to light image and shady face image two parts,
Calculate respectively in side to light image as in the white pixel proportion of retroreflective regions and shady face image as reflective
The white pixel proportion in region,
Iii. white pixel proportion in the white pixel proportion in side to light image and reflective surface image is carried out
Relatively, when the two difference exceedes setting value, then judge that this aluminum-plastic blister is as air tight.
3) after having detected, closing vacuum pump, open relief valve, adjustable change valve makes sealing cavity connect with relief valve.
Embodiment
In the present embodiment, described imageing sensor includes image pick-up card 2 and CCD camera 13, image pick-up card and computer
Being connected by USB data line, described transparent material is glass.By image pick-up card, the vacuum pump 1 in vacuum air-channel system,
Relief valve 4, reversal valve 3 and pressure transducer 6 and pipeline are arranged in casing 15, and sealing cavity is arranged on casing upper surface,
At box outer surface, the display Pressure gauge 8 of pressure transducer pressure data and on and off switch 9 and power supply indicator 10 are installed；By light
Source controller and computer are arranged close on the operating board 18 of casing.The present embodiment provides aluminium-plastic bubble plate packing sealing propertytest system
Population structure schematic diagram as shown in Figure 1.
Utilize the technical scheme described in patent of the present invention, or those skilled in the art be under the inspiration of art solutions of the present invention,
Design similar technical scheme, and reach above-mentioned technique effect, all fall into the protection domain of patent of the present invention.
Claims (4)
1. a sealing propertytest system for aluminium foil blister packaging, is characterized in that described detecting system is by vacuum air-channel system, optics
Measurement system and data acquisition processing system composition,
Described vacuum air-channel system includes sealing cavity, vacuum pump, relief valve, reversal valve and pressure transducer, described reversal valve
Respectively by pipeline with seal cavity, vacuum pump and relief valve are connected, pressure transducer is also mounted at and seals cavity and directly connect
On logical pipeline, described sealing inside cavity bottom surface is used for placing aluminum-plastic blister to be detected, and the end face sealing cavity has employing thoroughly
The window of bright material seal；
Described optical measuring system includes light source, light source controller, imageing sensor and support, described light source and imageing sensor
It is arranged on sealing cavity homonymy, the direction of illumination of light source and the shooting direction of imageing sensor by support and seals at the bottom of inside cavity
The angle in face is 45-60 °；Described light source controller is connected with light source and controls the brightness of light source；Described data handling system bag
Include the computer being connected with imageing sensor.
The sealing propertytest system of a kind of aluminium foil blister the most as claimed in claim 1 packaging, is characterized in that described imageing sensor is
For cmos image sensor.
The sealing propertytest system of a kind of aluminium foil blister the most as claimed in claim 1 packaging, is characterized in that described imageing sensor bag
Including CCD camera and image pick-up card, described image pick-up card is connected with computer.
4. the sealing propertytest system of a kind of aluminium foil blister packaging as described in claims 1 to 3 is arbitrary, is characterized in that aluminum-plastic blister
The operation of package encapsulation detecting system comprises the following steps:
1) image acquisition
Aluminum-plastic blister to be detected is lain on sealing cavity bottom surface, make aluminum-plastic blister upward；Start vacuum pump, adjustable change valve
Make vacuum pump connect with sealing cavity, after chamber vacuum degree to be sealed reaches requirement, make imageing sensor photographic light sources irradiate
Under aluminum-plastic blister image to be detected after transmit to computer；
2) image procossing, specifically includes following steps
A) enhancement process
The aluminum-plastic blister image hereinafter referred to as image to be detected collected is carried out greyscale transformation, and to strengthening warp
Cross the contrast of the image of greyscale transformation, increase retroreflective regions and the difference in non-reflective region；
B) binary conversion treatment
Image through enhancement process is carried out binary conversion treatment, the pixel of retroreflective regions is converted into white, by non-reflective
The pixel in region is converted into black；
C) piecemeal processes
I. the image through binary conversion treatment is carried out piecemeal process, make each image block only include an aluminum-plastic blister
Image；
Ii. the image of the aluminum-plastic blister in each image block is divided into side to light image and shady face image two parts,
Calculate respectively in side to light image as in the white pixel proportion of retroreflective regions and shady face image as reflective
The white pixel proportion in region,
Iii. white pixel proportion in the white pixel proportion in side to light image and reflective surface image is carried out
Relatively, when the two difference exceedes setting value, then judge that this aluminum-plastic blister is as air tight；
After having detected, closing vacuum pump, open relief valve, adjustable change valve makes sealing cavity connect with relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610506623.5A CN105910777B (en) | 2016-06-30 | 2016-06-30 | A kind of sealing propertytest system of aluminium foil blister packaging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610506623.5A CN105910777B (en) | 2016-06-30 | 2016-06-30 | A kind of sealing propertytest system of aluminium foil blister packaging |
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| CN105910777A true CN105910777A (en) | 2016-08-31 |
| CN105910777B CN105910777B (en) | 2019-03-12 |
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| CN201610506623.5A Active CN105910777B (en) | 2016-06-30 | 2016-06-30 | A kind of sealing propertytest system of aluminium foil blister packaging |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107796570A (en) * | 2017-10-27 | 2018-03-13 | 沈阳建筑大学 | A kind of product part special-shaped surfaces air tightness detection system and application |
| CN109211496A (en) * | 2018-09-30 | 2019-01-15 | 苏州市铭将意电子科技有限公司 | A kind of vacuum leak detector and its detection method |
| CN109580099A (en) * | 2018-12-24 | 2019-04-05 | 浙江科技学院 | A kind of vacuum packaging leak detection method based on optical coherence tomographic image |
| CN111699372A (en) * | 2019-06-21 | 2020-09-22 | 深圳市大疆创新科技有限公司 | Air tightness detection device, detection system and detection method |
| CN112268663A (en) * | 2020-09-10 | 2021-01-26 | 杭州电子科技大学 | Machine vision soap bubble method air tightness inspection method |
| CN115057025A (en) * | 2022-07-14 | 2022-09-16 | 达尔嘉(广州)标识设备有限公司 | Bubble cap machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107796570A (en) * | 2017-10-27 | 2018-03-13 | 沈阳建筑大学 | A kind of product part special-shaped surfaces air tightness detection system and application |
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| CN115057025B (en) * | 2022-07-14 | 2023-08-22 | 达尔嘉(广州)标识设备有限公司 | Bubble cap machine |
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