CN105910777B - A kind of sealing propertytest system of aluminium foil blister packaging - Google Patents

A kind of sealing propertytest system of aluminium foil blister packaging Download PDF

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Publication number
CN105910777B
CN105910777B CN201610506623.5A CN201610506623A CN105910777B CN 105910777 B CN105910777 B CN 105910777B CN 201610506623 A CN201610506623 A CN 201610506623A CN 105910777 B CN105910777 B CN 105910777B
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image
seal cavity
light source
aluminum
blister
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CN105910777A (en
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师占群
李思畅
方顺亭
甄冬
梁月
张敬浩
王军事
秦超
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Tianjin Hebei University Of Technology Science Park Development Co ltd
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Hebei University of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/36Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested

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  • General Physics & Mathematics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A kind of sealing propertytest system of aluminium foil blister packaging, it is made of vacuum air-channel system, optical measuring system and data acquisition processing system, vacuum air-channel system includes seal cavity, vacuum pump, relief valve, reversal valve and pressure sensor, the reversal valve passes through pipeline respectively and is connected with seal cavity, vacuum pump and relief valve, pressure sensor is also mounted on the pipeline being directly connected to seal cavity, seal cavity inner bottom surface has the window using transparent material sealing for placing aluminum-plastic blister to be detected, the top surface of seal cavity;Optical measuring system includes light source, light source controller, imaging sensor and bracket, light source and imaging sensor are mounted on that seal cavity is ipsilateral by bracket, and the angle of the direction of illumination of light source and the shooting direction of imaging sensor and seal cavity inner bottom surface is 45-60 °;Light source controller is connected with light source and controls the brightness of light source;Data processing system includes the computer connecting with imaging sensor.

Description

A kind of sealing propertytest system of aluminium foil blister packaging
Technical field
The invention patent relates to package encapsulation detection field, the sealing propertytest system of specifically a kind of aluminium foil blister packaging System, including algorithm and its hardware corollary apparatus.
Background technique
It is a kind of mass defect for being difficult to be observed directly with eye that aluminum-plastic blister, which seals Air Leakage Defect, and this defect can make to wrap The shelf effect of dress product substantially reduces, and leakproofness will directly affect the quality of product, or even due to product packaging improper failure Influence the health of user.This requires carrying out gas leakage detection to aluminium-plastic bubble plate packing, but existing aluminium foil blister packs gas leakage Defect detecting technique will cause waste, implement time-consuming work consuming, and the degree of automation is low, is no longer satisfied growth requirement.For This, research is lossless, efficient aluminium foil blister leakproofness intelligent detecting method is imperative.
Traditional leak hunting method is that the blister package product that will be inspected by random samples immerses in coloured special liquid, is then imposed negative Pressure judges gas leakage situation whether infiltration by observation colored liquid.It hunts leak in this way, first has to drip liquid Capable person can judge whether there is Air Leakage Defect, and such time is longer, in addition itself the biggest problems are that examined product whether gas leakage It will all discard, to cause very big waste.More advanced leak detector is to be placed in examined product in one closed container to add It presses or vacuumizes, to determine whether there are gas leakage whether deformation by the aluminium foil surface of eye-observation blister package, this method is deposited Deficiency be that human error is affected, and it is not intuitive as the result is shown.Therefore a kind of lossless, quick aluminium foil bubble is provided The sealing propertytest system of cover packaging becomes urgent problem to be solved in the prior art.
Summary of the invention
A kind of sealing propertytest system of aluminium foil blister packaging, it is characterized in that the detection system by vacuum air-channel system, Optical measuring system and data acquisition processing system composition,
The vacuum air-channel system includes seal cavity, vacuum pump, and relief valve, reversal valve and pressure sensor are described to change Pass through pipeline respectively to valve to be connected with seal cavity, vacuum pump and relief valve, pressure sensor is also mounted at and seal cavity On the pipeline being directly connected to, the seal cavity inner bottom surface is for placing aluminum-plastic blister to be detected, the top surface tool of seal cavity There is the window using transparent material sealing,
The optical measuring system includes light source, light source controller, imaging sensor and bracket, and the light source and image pass Sensor is mounted on that seal cavity is ipsilateral by bracket, the direction of illumination of light source and the shooting direction of imaging sensor and seal cavity The angle of inner bottom surface is 45-60 °;The light source controller is connected with light source and controls the brightness of light source;At the data Reason system includes the computer connecting with imaging sensor.
The sealing propertytest system of a kind of aluminium foil blister packaging, it is characterized in that described image sensor is cmos image Sensor.
The sealing propertytest system of a kind of aluminium foil blister packaging, it is characterized in that described image sensor includes CCD phase Machine and image pick-up card, described image capture card are connected to a computer.
The sealing propertytest system of a kind of aluminium foil blister packaging, it is characterized in that aluminium-plastic bubble plate packing sealing propertytest system The operation of system includes the following steps
1) Image Acquisition
Aluminum-plastic blister to be detected is lain on seal cavity bottom surface, makes aluminum-plastic blister upward;Start vacuum pump, adjusting is changed To valve
It is connected to vacuum pump with seal cavity, after chamber vacuum degree to be sealed reaches requirement, makes imaging sensor pickup light Source irradiation
Under aluminum-plastic blister image to be detected after be transmitted to computer;
2) image procossing specifically includes following steps
A) enhancing is handled
Collected aluminum-plastic blister image --- hereinafter referred to as image --- to be detected is subjected to greyscale transformation, and to enhancing The contrast of image by greyscale transformation increases the difference of retroreflective regions and non-reflective region;
B) binary conversion treatment
Binary conversion treatment will be carried out by the image of enhancing processing, converts white for the pixel of retroreflective regions, it will not be anti- The pixel in light region is converted into black;
C) piecemeal is handled
I. the image Jing Guo binary conversion treatment is subjected to piecemeal processing, making each image block only includes 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 separately in side to light image as in the white pixel proportion of retroreflective regions and shady face image be used as retroreflective regions White pixel proportion,
Iii. by side to light image white pixel proportion and reflective surface image in white pixel proportion into Row compares, and when the two difference is more than setting value, then determines that the aluminum-plastic blister is air tight;
3) after the completion of detecting, vacuum pump is closed, opens relief valve, adjustable change valve is connected to seal cavity with relief valve.
A kind of aluminium-plastic bubble plate packing sealing propertytest system provided by the invention.It is former using differential air leak detection Reason vacuumizes the airtight cavity for placing aluminum-plastic blister to be detected.Since aluminium-plastic bubble plate packing is to encapsulate under normal pressure, institute To be in vacuum environment when aluminium foil blister packaging, the aluminium foil surface of intact blister package is encapsulated due to there are inside and outside differential pressure It significantly heaves, and has almost no change there are the blister package aluminium foil surface of Air Leakage Defect, be maintained as state slightly concave downwards. When aluminium-plastic bubble plate packing is in vacuum environment, gas leakage packaging is different with air tight surface of package deformation quantity, makees to the reflection of light With difference.When light shines aluminium-plastic bubble plate packing surface with preferred 45-60 degree angle, the gastight work for being packaged in negative pressure Under, surface is convex, and side to light has a large amount of light reflections, and therefore the retroreflective regions size of side to light and shady face is deposited In significant difference;And the aluminium foil surface of gas leakage is remained stationary, the retroreflective regions difference in size of side to light and shady face is smaller.Benefit With image processing techniques, collected vacuum aluminium-plastic bubble plate packing image is handled.Image procossing includes image enhancement, figure As binaryzation and image block can side to light to each aluminum-plastic blister image and shady face image be compared to automatic Determine its whether gas leakage.The efficiency and accuracy for substantially increasing aluminum-plastic blister detection, realize the differentiation of aluminium-plastic bubble plate packing Automation, there is the features such as non-contact, high-precision, manufacturing cost is cheap and long service life, be suitable for practical application popularization.
Detailed description of the invention
Fig. 1 is a kind of embodiment general structure schematic diagram of aluminium-plastic bubble plate packing sealing propertytest system of the present invention;
1, vacuum pump in figure, 2, image pick-up card, 3, reversal valve, 4, relief valve, 6, pressure sensor, 8, pressure gauge, 9, Power switch, 10, power supply indicator, 11, seal cavity, 12, light source, 13, CCD camera, 14, bracket, 15, cabinet, 16, light source Controller, 17, computer, 18, station
Specific embodiment
This patent is described in detail below with reference to embodiment and its attached drawing.Embodiment is before being with technical solution described in this patent The specific implementation for proposing progress gives detailed embodiment and process.But claims hereof protection scope is not limited to Following embodiment descriptions.
Aluminium-plastic bubble plate packing sealing propertytest system provided by the invention, it is characterized in that the detection system is by vacuum air-channel System, optical measuring system and data acquisition processing system composition,
The vacuum air-channel system includes seal cavity 11, vacuum pump 1, relief valve 4, reversal valve 3 and pressure sensor 6, The reversal valve passes through pipeline respectively and is connected with seal cavity, vacuum pump and relief valve, pressure sensor be also mounted at it is close On the pipeline that envelope cavity is directly connected to, the seal cavity inner bottom surface is used to place aluminum-plastic blister to be detected, seal cavity Top surface has the window using transparent material sealing,
The optical measuring system includes light source 12, light source controller 16, imaging sensor and bracket 14, the light source and Imaging sensor is mounted on that seal cavity is ipsilateral by bracket, the shooting direction of the direction of illumination of light source and imaging sensor with it is close The angle for sealing inside cavity bottom surface is 45-60 °;The light source controller is connected with light source and controls the brightness of light source;
The data processing system includes the computer 17 connecting with imaging sensor.
The operation of the aluminium-plastic bubble plate packing sealing propertytest system, includes the following steps
1) Image Acquisition
Aluminum-plastic blister to be detected is lain on seal cavity bottom surface, makes aluminum-plastic blister upward;Start vacuum pump, adjusting is changed Vacuum pump is connected to seal cavity to valve, after chamber vacuum degree to be sealed reaches requirement, shines imaging sensor photographic light sources Computer is transmitted to after aluminum-plastic blister image to be detected under penetrating;
2) image procossing specifically includes following steps
A) enhancing is handled
Collected aluminum-plastic blister image (hereinafter referred to as image) to be detected is subjected to greyscale transformation, and to enhancing by ash The contrast of the image of transformation is spent, the difference of retroreflective regions and non-reflective region is increased;
B) binary conversion treatment
Binary conversion treatment will be carried out by the image of enhancing processing, converts white for the pixel of retroreflective regions, it will not be anti- The pixel in light region is converted into black;
C) piecemeal is handled
I. the image Jing Guo binary conversion treatment is subjected to piecemeal processing, making each image block only includes 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 separately in side to light image as in the white pixel proportion of retroreflective regions and shady face image be used as retroreflective regions White pixel proportion,
Iii. by side to light image white pixel proportion and reflective surface image in white pixel proportion into Row compares, and when the two difference is more than setting value, then determines that the aluminum-plastic blister is air tight.
3) after the completion of detecting, vacuum pump is closed, opens relief valve, adjustable change valve is connected to seal cavity with relief valve.
Embodiment
In the present embodiment, described image sensor includes image pick-up card 2 and CCD camera 13, image pick-up card and is calculated Machine is connected by USB data line, and the transparent material is glass.By image pick-up card, vacuum pump 1 in vacuum air-channel system, Relief valve 4, reversal valve 3 and pressure sensor 6 and pipeline are mounted in cabinet 15, and seal cavity is mounted on cabinet upper surface, The pressure gauge 8 of surface installation display pressure sensor pressure data and power switch 9 and power supply indicator 10 outside the enclosure;By light Source controller and computer are arranged close on the station 18 of cabinet.The present embodiment provides aluminium-plastic bubble plate packing sealing propertytest systems The general structure schematic diagram of system is as shown in Figure 1.
Using technical solution or those skilled in the art described in the invention patent in the invention patent technical solution Under inspiration, similar technical solution is designed, and reaches above-mentioned technical effect, is the protection model for falling into the invention patent It encloses.

Claims (4)

1. a kind of sealing propertytest system of aluminium foil blister packaging, it is characterized in that the detection system is by vacuum air-channel system, light Measuring system and data acquisition processing system composition are learned,
The vacuum air-channel system includes seal cavity, vacuum pump, relief valve, reversal valve and pressure sensor, the reversal valve It is connected respectively by pipeline with seal cavity, vacuum pump and relief valve, pressure sensor is also mounted at direct with seal cavity On the pipeline of connection, for placing aluminum-plastic blister to be detected, the top surface of seal cavity has adopts the seal cavity inner bottom surface The window sealed with transparent material;
The optical measuring system includes light source, light source controller, imaging sensor and bracket, the light source and imaging sensor It is mounted on that seal cavity is ipsilateral by bracket, inside the direction of illumination of light source and the shooting direction of imaging sensor and seal cavity The angle of bottom surface is 45-60 °;The light source controller is connected with light source and controls the brightness of light source;At the data acquisition Reason system includes the computer connecting with imaging sensor.
2. a kind of sealing propertytest system of aluminium foil blister packaging as described in claim 1, it is characterized in that described image sensor For cmos image sensor.
3. a kind of sealing propertytest system of aluminium foil blister packaging as described in claim 1, it is characterized in that described image sensor Including CCD camera and image pick-up card, described image capture card is connected to a computer.
4. the sealing propertytest system that a kind of aluminium foil blister as described in claims 1 to 3 is any is packed, it is characterized in that plastic-aluminum steeps The operation of cover package encapsulation detection system the following steps are included:
1) Image Acquisition
Aluminum-plastic blister to be detected is lain on seal cavity bottom surface, makes aluminum-plastic blister upward;Start vacuum pump, adjustable change valve It is connected to vacuum pump with seal cavity, after chamber vacuum degree to be sealed reaches requirement, under irradiating imaging sensor photographic light sources Aluminum-plastic blister image to be detected after be transmitted to computer;
2) image procossing specifically includes following steps
A) enhancing is handled
Collected aluminum-plastic blister image --- hereinafter referred to as image --- to be detected is subjected to greyscale transformation, and enhancing is passed through The contrast of the image of greyscale transformation increases the difference of retroreflective regions and non-reflective region;
B) binary conversion treatment
Binary conversion treatment will be carried out by the image of enhancing processing, white is converted by the pixel of retroreflective regions, by non-reflective area The pixel in domain is converted into black;
C) piecemeal is handled
I. the image Jing Guo binary conversion treatment is subjected to piecemeal processing, makes each image block only and include the figure of an aluminum-plastic blister Picture;
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, respectively Calculate side to light image in as in the white pixel proportion and shady face image of retroreflective regions as the white of retroreflective regions Color pixel proportion,
Iii. by side to light image white pixel proportion and reflective surface image in white pixel proportion compare Compared with, when the two difference be more than setting value when, then determine the aluminum-plastic blister be it is air tight;
After the completion of detection, vacuum pump is closed, opens relief valve, adjustable change valve is connected to seal cavity with relief valve.
CN201610506623.5A 2016-06-30 2016-06-30 A kind of sealing propertytest system of aluminium foil blister packaging Active CN105910777B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107796570B (en) * 2017-10-27 2019-06-28 沈阳建筑大学 A kind of product part special-shaped surfaces air tightness detection system and application
CN109211496B (en) * 2018-09-30 2020-11-20 山东瑞谱检测技术有限公司 Portable vacuum leak detector and detection method thereof
CN109580099B (en) * 2018-12-24 2020-10-02 浙江科技学院 Vacuum package air leakage detection method based on optical coherence tomography image
WO2020252788A1 (en) * 2019-06-21 2020-12-24 深圳市大疆创新科技有限公司 Air tightness detection device, air tightness detection system and air tightness 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
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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CN202267584U (en) * 2011-10-19 2012-06-06 天津市群惠科技有限公司 Automatic identification leak detector
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Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
CN201397217Y (en) * 2009-04-14 2010-02-03 深圳市吉阳自动化科技有限公司 Capacitor leakage detection device
CN201569547U (en) * 2009-10-20 2010-09-01 重庆市特种设备质量安全检测中心 Vacuum adsorption leak detecting device
CN201688951U (en) * 2009-10-20 2010-12-29 重庆市特种设备质量安全检测中心 Welding seam leakage detecting box
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Effective date of registration: 20230421

Address after: 300130 No. 8, glorious road, Hongqiao District, Tianjin

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