A kind of offline inspection equipment of print product
Technical field
The utility model relates to the printing checking technical field, relates in particular to a kind of offline inspection equipment of the print product based on image acquisition.
Background technology
Along with the development of printing industry, people more and more pay attention to the product printing quality of typography.The making of a printed matter, often just can complete (especially chromatograp) through ten several operations.In said process, due to reasons such as typography, operating personnel's control criterion and mechanical precisions, printed matter often there will be such or such defect, causes scrapping the appearance of substandard products.How detecting these waste products is important requirements in printing-flow.A lot of printing enterprises rely on the quality inspection employees sampling observation product quality of patrolling.Due to employee quality difference and working experience difference, widely different to product quality assurance, cause printing enterprise's product quality often to go wrong.Simultaneously, along with the automaticity of printing is more and more higher, speed is more and more faster, to corresponding detection technique, requires also more and more higher.
The printed matter of prior art detects the general online measuring technique that adopts, and its detection comprises that product defects detects and colorimetric detection.Wherein, the colorimetric detection method is that printing product colourity is measured by means of instrument (as color difference meter), and utilizes correlation theory to data analysis and processing, is estimated out the quality of printing.Product defects detects principle: by the CCD pick-up lens, gather the zero defect product as standard picture, and then collection image to be detected on printing production line, each frame image transmitting to be detected collected is compared with standard picture to on-the-spot, find out and problematicly think, thereby find the quality problems of the corresponding printed matter of this two field picture, realize the On-line Control of product quality.
It is easier more fast in the online measuring technique operational process, to have realized, detection speed greatly improves.Yet still there is certain deficiency in it:
For the packages printing industry, the precision of quality detecting system is most critical, although online measuring technique, constantly perfect, still can't be accomplished 100% detection for the part quality problems in recent years.In addition, line mass detection system cost will all be arranged on every equipment of printing enterprise too high, be not that every printing enterprise can power bears every equipment and installs on-line detecting system additional, and most of on-line detecting system can only mark waste product position, can not waste product removing; Moreover, as the tobacco bale printing, often adopt kinds of processes to be combined, also be difficult to only have in large 10 versions of product of reply in time the situation of 1 waste product with the on-line detecting system of goods rejection function.
In view of this, prior art haves much room for improvement and improves.
The utility model content
In view of the deficiencies in the prior art, the utility model purpose is to provide a kind of offline inspection equipment of print product.Be intended to solve low precision, the high in cost of production problem of the online detection instrument existence that has print product now.
The technical solution of the utility model is as follows:
A kind of offline inspection equipment of print product, wherein, comprise: the offline inspection apparatus body is provided with processor, the area array cameras for detection of the product bar code, multi-color cord array camera, black and white line array camera, light source and for detection of the aberration detection camera of product aberration on described offline inspection apparatus body;
Wherein, described processor difference joint face array camera, multi-color cord array camera, black and white line array camera, LED light source and aberration detection camera.
The offline inspection equipment of described print product, wherein, the resolution of described multi-color cord array camera is 4k, and it detects pixels across long is 0.08mm, and vertically pixel is long is 0.08mm; The number of described multi-color cord array camera is one or more.
The offline inspection equipment of described print product, wherein, the resolution of described multi-color cord array camera is more than 4k.The number of described multi-color cord array camera is one or more.
The offline inspection equipment of described print product, wherein, the resolution of described black and white line array camera is 8k.
The offline inspection equipment of described print product, wherein, described black and white line array camera resolution is 8k, and it detects pixels across long is 0.04mm, and vertically pixel is long is 0.04mm
The offline inspection equipment of described print product, wherein, described light source is LED light source.
The offline inspection equipment of described print product, wherein, also comprise a display device, and described display device connects described processor.
The offline inspection equipment of described print product, wherein, on described display device, be provided with touch-screen, described touch-screen is for receiving user's instruction, call and need the production code member detected, realize a plurality of products of equipment Inspection and/or open corresponding measuring ability.
The offline inspection equipment of described print product, wherein, include one for placing the workbench of print product to be detected on described offline inspection apparatus body, be provided with one on described workbench for adsorbing the air intake device of fixing printing product.
The offline inspection equipment of described print product, wherein, also be provided with on described workbench for the guide rail of camera is installed, and described camera slides on guide rail, realizes the scanning to product.
Beneficial effect:
The offline inspection equipment of the application's print product, by area array cameras, multi-color cord array camera, black and white line array camera, light source and the aberration detection camera off-line arranged, print product is carried out to Quality Detection on described offline inspection apparatus body, it is detected under fixing precision conditions, can not reduce detection efficiency because print quality requires high, guarantee the quality testing that can carry out print product, can ensure the quality of the product that dispatches from the factory; Simultaneously, save testing cost, strengthened the competitive power of enterprise.
The accompanying drawing explanation
The structured flowchart of the offline inspection equipment that Fig. 1 is print product of the present utility model.
Embodiment
The utility model provides a kind of offline inspection equipment of print product, clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, the structured flowchart of the offline inspection equipment that it is print product of the present utility model.As shown in the figure, the offline inspection equipment of described print product comprises: offline inspection apparatus body 100 is provided with processor 110, area array cameras 120, multi-color cord array camera 130, black and white line array camera 140, light source 150 and aberration detection camera 160 on described offline inspection apparatus body 100; Wherein, described processor 110 difference joint face array cameras 120, multi-color cord array camera 130, black and white line array camera 140 and aberration detection camera 160.
Specifically, described offline inspection equipment is not merely for a certain product or a certain production line setting, and it can be used for carrying out the quality testing of various types of print products, and, unlike online detection instrument, needs on each production line to be provided with; Thereby greatly reduce the cost that printed matter detects.So described offline inspection apparatus body 100 is not arranged on a certain production line, it is placed separately, can for the product to each model (product that different production lines are produced), be detected simultaneously.
Be provided with area array cameras 120 on described offline inspection apparatus body 100, described area array cameras 120 is for detection of the bar code of print product (under referred to as printing) or it is as his Quick Response Code etc.; The advantage of area array cameras is to obtain two-dimensional image information, and measurement image is directly perceived.
The print quality checkout equipment is that the gray scale difference value by each pixel changes to distinguish defect.Its accuracy of detection is determined by two aspects: the one, by spatial resolution; The 2nd, the equipment colour resolution.Therefore, " 4k high-speed color CCD camera " becomes standard configuration.The sweep velocity of high speed camera is 14000 row/second, and when ensureing accuracy of detection, detection speed greatly improves.Certainly, also need the software algorithm corresponding with described camera and optical processing system to carry out acting in conjunction.Described multi-color cord array camera 130 is for detection of the defect of paper.Described multi-color cord array camera is simple in structure, and cost is lower.Can store a line TV signal simultaneously. because the number of its single photosensitive unit can be done a lot, under the prerequisite of equal measuring accuracy, it is larger that its measurement range can be done, and due to line-scan digital camera real-time Transmission light-to-current inversion signal with self-scanning speed is fast, frequency response is high, can realize kinetic measurement, and can under low-light (level), work, so line-scan digital camera is widely used in the fields such as product size measurement.In embodiment of the present utility model, the resolution of described multi-color cord array camera 4k(as described in the resolution of multi-color cord array camera be 8k) more than.In the present embodiment, described black and white line array camera 140 resolution are 8k, and it detects pixels across long is 0.04mm, and vertically pixel is long for 0.04mm, mainly for detection of the printed matter light areas, as glazing defective workmanship and concavo-convex defect etc.Much more no longer described aberration detection camera 160 is detected for the aberration of printing product, and it is prior art, just to do and repeated here.
The effect of above-mentioned four cameras is respectively used to the bar code of printing product, the quality of paper and the aspects such as color of printing and is detected.The storage software corresponding with described camera in described processor 110, the image information that above-mentioned area array cameras 120, multi-color cord array camera 130, black and white line array camera 140 and aberration detection camera 160 are sent is carried out respective handling, and exports corresponding result.It can, referring to prior art, not do too much description here yet.
Further, described light source 150 is used to above-mentioned four cameras that light source is provided, and in the present embodiment, described light source 150 can adopt LED light source.
Further, the number of described multi-color cord array camera can be set according to the needs of institute's testing product: can increase by 2 or a plurality of according to product requirement, to improve accuracy of detection; And the angle of described a plurality of multi-color cord array cameras is adjustable, for the various defects to product, precisely detect.
Further, for convenient, with the user, carry out man-machine interaction, the offline inspection equipment of described print product also comprises a display device, and described display device connects described processor.The user can call and need the production code member detected by display device, and the product that needs are detected is placed on locating table, by camera scanning, completes the testing to printed matter.And can realize a plurality of products of equipment Inspection by recalling the different product numbering, see corresponding testing result simultaneously.In addition, can also be provided with touch-screen on described display device.Facilitate the user to input corresponding instruction by touch-screen, open corresponding measuring ability.Can also pass through analysis detecting data, to printing process, provide quality control to instruct, be convenient to improve the quality of products and reduce consumption.
Illustrate below by a specific embodiment how above-mentioned printing offline inspection equipment works, in the present embodiment, include one on described offline inspection apparatus body for placing the workbench of print product to be detected, be provided with one on described workbench for adsorbing the air intake device of fixing printing product, in addition, on described workbench, also be provided with for the guide rail of above-mentioned four cameras is installed, described camera slides on guide rail again, realizes the scanning to product.
After being placed on workbench, air intake device adsorbs printing and fixes, guide rail is under the driving of corresponding motor, driving described camera printing product is scanned, and four detected image that collect are transferred in processor and compare with standard picture, determine whether described printing exists corresponding mass defect (corresponding warning device can also be set), and its detectability and reliability are considerably beyond online detection instrument.
In sum, the offline inspection equipment of print product of the present utility model, by area array cameras, multi-color cord array camera, black and white line array camera, light source and the aberration detection camera off-line arranged, print product is carried out to Quality Detection on described offline inspection apparatus body, it is detected under fixing precision conditions, can not reduce detection efficiency because print quality requires high, guaranteed to carry out 100% quality testing to the print product of sampling observation, can ensure the quality of the product that dispatches from the factory; Simultaneously, save testing cost, strengthened the competitive power of enterprise.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or convert, all these improvement and conversion all should belong to the protection domain of the utility model claims.