CN201689059U

CN201689059U - Device for detecting character-printing quality on PET bottles

Info

Publication number: CN201689059U
Application number: CN2010201945922U
Authority: CN
Inventors: 张树君; 姜辉; 王立伟; 国磊; 李涵
Original assignee: Shandong Mingjia Package Inspection Technology Co Ltd
Current assignee: Shandong Mingjia Package Inspection Technology Co Ltd
Priority date: 2010-05-19
Filing date: 2010-05-19
Publication date: 2010-12-29
Anticipated expiration: 2020-05-19

Abstract

The utility model discloses a device for detecting the character-printing quality on PET bottles, which comprises cameras, an image processor, a sensor, a display, an industrial personal computer, a detection light source and a motion control system, wherein the cameras are respectively arranged at the positions of printed characters at the bottle neck and the bottle cap of a PET bottle, the cameras are connected with the image processor, and the image processor is connected with the industrial personal computer and the motion control system. The utility model detects the laser printing character or ink printing character of the PET bottle, can substitute for manual detection, greatly reduces the labor intensity of manual work, and improves the online detection accuracy and production efficiency.

Description

A kind of device that detects coding character quality on the PET bottle

Technical field:

The utility model belongs to production line Automatic Measurement Technique field, especially relates to the device of coding character quality on a kind of PET of detection bottle.

Background technology:

Along with the continuous development of national economy, people's consumption idea constantly changes, and people also more and more pay attention to healthy consumption, especially the date of manufacture of being careful commodity and shelf-life when buying commodity.Yet all kinds of disputes that cause owing to the quality of product disappearance were of common occurrence in recent years, when substandard product comes into the market when causing dispute, how the consumer judges whether the own product of having been bought is " problem " product, what producer inform the consumer by when recalling this batch product, this a succession of problem is all summed up in the point that in the coding of product.Often have important informations such as date of manufacture, shelf-life, production batch, the production place of production in the coding, slight coding once was considered to a footy production link, when the food safety and sanitation problem becomes focus, seemed particularly important.

At present Soft Drinks Plant uses two kinds of printing ink coding and laser codings to product usually.But higher and inkiness is arranged because of printing ink coding cost, so the laser coding has the trend that replaces the printing ink coding.Though laser coding cost and maintenance cost are lower,, increased the difficulty of artificial identification virtually because of coding itself is a Transparent color.The traditional detection coding of beverage industry at present is all by manually finishing, running up of production line, every bottle of time that a few tens of milliseconds is only arranged is because the human factors such as visual fatigue of human eye, be easy to cause omission and flase drop, for food security hides some dangers for to laser coding or printing ink coding.

Summary of the invention:

The purpose of this utility model is: the device that coding character quality on the high a kind of PET of the detection bottle of online accuracy of detection and production efficiency is provided.

The technical solution of the utility model is: comprise camera, image processor, sensor, display, industrial computer, detection light source and kinetic control system, bottleneck at the PET bottle, the coding character position place at bottle cap place is provided with camera, camera links to each other with image processor, image processor connects industrial computer and kinetic control system, detection light source is by each the container polishing to passing through of stroboscopic signal, camera is taken pictures, the picture that image processor photographs is a black and white, effect according to image acquisition is set an area-of-interest, and the image in this zone handled, all characters in the zone are highlighted, and with system in the correct coding character information set compare.Coding is adopted bias light polishing mode during the detection laser coding when the bottleneck position, adopt prospect light polishing mode when detecting the printing ink coding, and coding is adopted prospect light polishing mode when the bottle cap position.

The beneficial effects of the utility model are: detection light source is the PET bottle polishing through it by obtaining the stroboscopic signal, behind the camera picked up signal bottle is taken pictures, from the uneven picture of background, analyze then and determine area-of-interest, from this zone, extract useful information then, exercise equipment is remembered character then, correct information with default compares then, determines whether coding is qualified.Because the utility model is positioned at after the ink jet numbering machine, and as close as possible ink jet numbering machine, laser coding or printing ink coding to the PET bottle detect, main detection coding has or not or coding is discerned, on the beverage packaging production line, use the utility model, can replace manual detection, reduce low hand labor intensity greatly, improve online accuracy of detection and production efficiency.If certain a collection of product generation quality problems, we can notify the consumer in the very first time, and substandard product is in time recalled, and make consumer's loss be reduced to minimum, reduce the generation of security incident.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Embodiment:

The utility model partly is made up of

camera

5,3, image processor, sensor, display, industrial computer, detection light source 1 and kinetic control system etc.From structural representation of the present utility model shown in Figure 1 as can be seen, in the bottleneck 4 of PET bottle, the coding position at bottle cap 2 places

smart camera

5,3 is set respectively,

smart camera

5,3 links to each other with image processor.Image processor connects industrial computer and kinetic control system, and detection light source 1 is by each the container polishing to passing through of stroboscopic signal, and

camera

5,3 is taken pictures, and adopts different light sources 1, different light path design at different coding types.Different coding types generally on bottleneck 4 or bottle cap 2, can be detected by adjusting the polishing mode in the coding position of most beverage producers at present.Coding during the detection laser coding, is adopted bias light polishing mode when bottleneck 4 positions, the coding part is white in color in image, and background is black; When detecting the printing ink coding, adopt prospect light polishing mode, make the coding part be black in image, background parts is white in color.Coding is when bottle cap 2 positions, because bottle cap is lighttight and coloured, adopts prospect light polishing mode, according to the color and the surface structure of lid, carries out the parameter setting of

light.Camera

5,3 can be smart camera, and

camera

5,3 and image processor also can be the system of camera and image pick-up card and industrial computer composition.

In image acquisition, can run into following collection difficult point: be printed on striped on the PET bottle, owing to adopt these stripeds of dark ground illumination mode to produce black shade at image; Because of the fringe position of each bottle differs, if striped just then makes the background of image inhomogeneous near coding place; The liquid level of bottle height also can influence the bright dark degree of image, because of the whole rectangular area of containing the coding character.Image processor is set the position of rectangle area-of-interest according to the physical location of coding in image, makes it comprise character zone.Utilization filtering, threshold value and erosion algorithm are to character parts of images processing processing, increase the contrast of character and background, thereby character is come out from the regional saliency of perception, the utilization character recognition algorithm is trained to template to designated character, and at template matching algorithm, program can be read all characters in the perception zone automatically by area-of-interest, with the character read and given correct character relatively, if correctly then be qualified bottle, otherwise, defective.Because the height difference of bottle, thus when Machine Design, to make equipment accomplish adjustable height, thus increase the versatility of equipment.

The utility model comprises the detailed process of each width of cloth treatment of picture in the sequence image of gathering: collect image; Image is carried out cutting apart of area-of-interest; Area-of-interest is carried out the image pre-service; Image after handling is carried out graphical analysis, information extraction; Set the defective criterion as required, judge whether the information of extracting reaches defective and judge requirement, promptly outputs signal to PLC if reach this standard, carry out by PLC and reject action.

The utility model can be checked the coding quality on all packing container things, for example: the detection of the relevant coding quality of the coding at the bottom of the coding of beer bottle bottle cap, the pop can jar, the coding on the glass containers, the coding on the carton or the like.

Claims

1. device that detects coding character quality on the PET bottle, comprise camera, image processor, sensor, display, industrial computer, detection light source and kinetic control system, it is characterized in that: at the bottleneck (4) of PET bottle, the coding character position place that bottle cap (2) is located is provided with camera (5,3), camera (5,3) link to each other with image processor, image processor connects industrial computer and kinetic control system, detection light source (1) is by each the container polishing to passing through of stroboscopic signal, camera (5,3) take pictures, the picture that described image processor photographs is a black and white, effect according to image acquisition is set an area-of-interest, and the image in this zone handled, all characters in the zone are highlighted, and with system in the correct coding character information set compare.

2. the device of coding character quality on the detection PET bottle according to claim 1, it is characterized in that: coding is when bottleneck (4) position, adopt bias light polishing mode during the detection laser coding, adopt prospect light polishing mode when detecting the printing ink coding, coding is adopted prospect light polishing mode when bottle cap (2) position.

3. the device of coding character quality on the detection PET bottle according to claim 1 and 2, it is characterized in that: described camera (5,3) is a smart camera.

4. the device of coding character quality on the detection PET bottle according to claim 1 and 2 is characterized in that: described camera (5,3) and image processor are the system of camera and image pick-up card and industrial computer composition.