CN103822926B - Holographic shading radium-shine wrappage press quality amount detection systems and detection method - Google Patents
Holographic shading radium-shine wrappage press quality amount detection systems and detection method Download PDFInfo
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- CN103822926B CN103822926B CN201410091618.3A CN201410091618A CN103822926B CN 103822926 B CN103822926 B CN 103822926B CN 201410091618 A CN201410091618 A CN 201410091618A CN 103822926 B CN103822926 B CN 103822926B
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Abstract
A kind of holographic shading radium-shine wrappage press quality amount detection systems and detection method, for detecting the apparent mass of the not radium-shine shading printed matter of fixed position, be provided with LED light source and CCD scanning head the outside of a transhipment roller of support holographic laser shading printed sheet is asymmetric, keep away laser light driving mechanism at least can to move through check point and with the rectilinear in planes of transhipment roller axes normal and around central shaft autorotation, enable CCD scanning head collect the clear pattern of printing by the reflected light of LED light source for adjusting CCD scanning head and avoid the reflected light of radium-shine shading.The finished product that the present invention is directed to the radium-shine shading occurred with not fixed position in printed matter provides a kind of simple and effective detection scheme, to the detection that proper mass detection system can realize printing quality through the transformation of low cost on the making production line of printed matter.
Description
Technical field
The present invention relates to high quality printing system, is a kind of holographic shading radium-shine wrappage press quality amount detection systems and detection method specifically.
Background technology
In high-grade packages printing; color effect is dazzled for outstanding packaging is apparent; usual printing adopts radium-shine printable fabric; and be the antifalsification improving packaging further on this basis; asynchronous Antiforge that plate aligned transfer, that have Brand characteristic at random on radium-shine printable fabric, to improve the protection of enterprise's legitimate interests.But along with the apparent effect of material is complicated, the technology carried also needs to improve, and at present for radium-shine class material, due to the impact by its surperficial laser effect, image acquisition cannot obtain the more stable data that maybe can represent whole structure, cause quality testing in this respect to never have the comparatively effective detection means of one and technology, the printable fabric as band poster edge causes great difficulty to quality testing especially.
Printing operation due to radium-shine shading is not in the end carry out, prior art cannot be carried out the printed matter printing quality with the not radium-shine shading in fixed position in printing semi-manufacture process, end product quality final is at present due to the impact of the not radium-shine shading of fixed position, automatically cannot be completed by equipment, the final quality inspection of a large amount of high quality printing product only has and completes by sampling range estimation, if carry out shielding to radium-shine shading will destroy sample pattern in the quality testing of image contrast method, because not fixing of position appears in radium-shine shading, also the inconsistent spot in sample pattern cannot be got rid of by software.
Summary of the invention
Technical matters to be solved by this invention is at a high speed in enormous quantities with in the printed matter production run of the not radium-shine shading in fixed position or to this print product, provides a kind of holographic shading radium-shine wrappage press quality amount detection systems and detection method.
Described holographic shading radium-shine wrappage press quality amount detection systems, for detecting the apparent mass of the not radium-shine shading printed matter of fixed position, it is characterized in that: have LED light source and CCD scanning head in the arranged outside of a transhipment roller of support holographic laser shading printed sheet, described CCD scanning head is arranged on to be kept away on laser light driving mechanism, described LED light source and the asymmetric both sides being arranged at check point normal of CCD scanning head, this is kept away laser light driving mechanism and at least can to move through check point and with the rectilinear in planes of transhipment roller axes normal and around central shaft autorotation, enable CCD scanning head collect the clear pattern of printing by the reflected light of LED light source for adjusting CCD scanning head and avoid the reflected light of radium-shine shading,
In the printing surface side of the tested printed sheet in described transhipment roller front, position transducer is housed, range sensor is equipped with in the rotating shaft of described transhipment roller, for obtaining the position of sample pattern;
Described detection system is provided with controller, the drive motor driving printed sheet to transmit controls rotating speed by described controller, operating for the speed of the control drive motor when carrying out pick-up pattern to CCD scanning head and avoid the adjustment of radium-shine shading reflected light lower than half rated speed, behind the optimum position obtaining CCD scanning head and/or angle, controlling drive motor run well;
The information output of described CCD scanning head is connected respectively to the input end of comparison amplifier with master sample information after low-pass filter, and the output terminal of comparison amplifier connects alarm.
As prioritization scheme, described LED light source is arranged on one independently on multidimensional driving mechanism, what described CCD scanning head was installed keep away laser light driving mechanism can carry out position and the angular adjustment of 6 degree of freedom, for the pre-adjustment to light source irradiation position and image information collecting position; The mixed lighting light that described LED light source adopts diffused light to be combined with direct light.
As prioritization scheme, described controller is connected with storer, for storing the scanning information of described CCD scanning head and the image information after low-pass filter process.
As prioritization scheme, described detection system is provided with display, for showing the pattern after master sample pattern, sampled scan pattern and low-pass filter process.
As a kind of embodiment, described range sensor is mounted in the scrambler of transhipment roller rotating shaft, and described position transducer is the photoelectric sensor identifying printed sheet photoelectric mark.
Based on the holographic shading radium-shine wrappage press quality quantity measuring method of above-mentioned holographic shading radium-shine wrappage press quality amount detection systems, it is characterized in that: when carrying out the printing of each batch, completing the quality testing of printing printed sheet with the not radium-shine shading in fixed position according to following step:
The first step, to transhipment roller pattern direction to be measured light LED light source, to transmit tested printed matter lower than the low speed of normal speed half;
The position of second step, adjustment CCD scanning head and LED light source and angle, until the pattern that CCD scanning head gathers conforms to position with the size of standard model pattern;
3rd step, driving keep away laser light driving mechanism, make CCD scanning head through check point and with the plane of transhipment roller axes normal in do translation and to move and around the autorotation of central shaft, in contrast pick-up pattern, the effect of laser reflection light, gets the CCD scanning head position corresponding to the minimum pattern of laser reflection influence of light and angle;
4th step, startup rated speed transmit tested printed sheet;
5th step, to gathered pattern-information filtering process, compared by the pattern after filtering process with master sample information, gained deviation is greater than threshold value and then starts alert program, otherwise continues to detect next printed sheet.
Concrete, in second step, determined the initial sum end time of a width pick-up pattern by the feedback signal of position transducer and range sensor, gather test product pattern.
As prioritization scheme, in the 5th step, send display to show in master sample pattern and the pattern after gathering filtering process, be convenient to hand inspection.
In the 5th step, the pattern after the pattern after storage of collected and filtering process, puts on record as inspection.
Further, in the 5th step, preserve the deviate of the pattern-information after also statistical filtering process and master sample information, recommend rational deviation judgment threshold according to statistic algorithm.
The finished product that the present invention is directed to the radium-shine shading occurred with not fixed position in printed matter provides a kind of simple and effective detection scheme, to the detection that proper mass detection system can realize printing quality through the transformation of low cost on the making production line of printed matter.
Printing operation due to radium-shine shading is not in the end carry out, prior art cannot be completed by equipment automatically to the printed matter printing quality with the not radium-shine shading in fixed position, the final quality inspection of a large amount of high quality printing product only has and completes by sampling range estimation, if carry out shielding to radium-shine shading will destroy sample pattern in the quality testing of image contrast method, because not fixing of position appears in radium-shine shading, the inconsistent spot in sample pattern also cannot be got rid of by software.This programme make use of the difference of radium-shine shading to the diffusing characteristic diffuser of the orientation consistency of light reflection and non-radium-shine shading, by CCD scanning head and LED light source with test product aligned in position after asymmetric arrangement, and Automatic-searching avoids laser reflection point optimum position, can realize effectively getting rid of the radium-shine shading interference of not fixed position after simply transforming former pick-up unit, the process of simulation eye recognition, and detection effect efficient stable.
The present invention program requires low to LED light source, do not limit diffuse reflection light source, on the contrary, because radium-shine shading is to the reflection of orientation consistency direct light, make CCD scanning head after avoiding laser reflection light, remainder, to the diffusion of light, can reduce the pattern effect of printed matter well after process after filtering, and therefore this programme have employed the light source that direct light and diffused light combine.
Therefore, after the present invention has carried out the improvement of low cost on former printed matter detection scheme basis, solve well for the test problems with the not printed matter printing quality of the radium-shine shading in fixed position.
Accompanying drawing explanation
Fig. 1 is application state schematic diagram of the present invention,
Fig. 2 is information-processing circuit schematic diagram of the present invention,
Fig. 3 is workflow schematic diagram of the present invention.
In figure: 1-keep away laser light driving mechanism, 2-CCD scanning head, 3-LED light source, 4-transhipment roller, 5-tested printed sheet, 6-moving rail, 7-master sample information, 8-low-pass filter, 9-comparison amplifier, 10-alarm, 11-storer, 12-controller, 13-display, 14-range sensor, 15-position transducer, 16-drive motor, 17-check point, 18-multidimensional driving mechanism.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described: as Fig. 1, shown in 2, described holographic shading radium-shine wrappage press quality amount detection systems, for detecting the apparent mass of the not radium-shine shading printed matter of fixed position, LED light source 3 and CCD scanning head 2 is had in the arranged outside of a transhipment roller 4 of support holographic laser shading printed sheet, described CCD scanning head 2 is arranged on to be kept away on laser light driving mechanism 1, described LED light source 3 and the asymmetric both sides being arranged at check point 17 normal of CCD scanning head 2, this is kept away laser light driving mechanism 1 and at least can to move through check point 17 and with the rectilinear in planes of transhipment roller 4 axes normal and around central shaft autorotation, enable CCD scanning head collect the clear pattern of printing by the reflected light of LED light source for adjusting CCD scanning head 2 and avoid the reflected light of radium-shine shading.Detect and undertaken by the transhipment roller of support printed matter, sweep in conjunction with CCD line, effectively can prevent the reflection graphic patterns problem on deformation because printed matter surface out-of-flatness brings.For for the reflection avoided with the not radium-shine shading in fixed position, the adjustment that CCD scanning head only needs translation and rotates two degree of freedom can be carried out.As prioritization scheme, described LED light source 3 is arranged on one independently on multidimensional driving mechanism 18, what described CCD scanning head 2 was installed keep away laser light driving mechanism 1 can carry out position and the angular adjustment of 6 degree of freedom, for the pre-adjustment to light source irradiation position and image information collecting position.
In the printing surface side of the tested printed sheet 5 in described transhipment roller 4 front, position transducer 15 is housed, range sensor 14 is equipped with in the rotating shaft of described transhipment roller 4, for accurately obtaining the position of sample pattern; As a kind of embodiment, described range sensor 14 is mounted in the scrambler of transhipment roller 4 rotating shaft, and described position transducer 15 is the photoelectric sensors identifying printed sheet photoelectric mark.Pattern to be detected can be located in conjunction with the positioning mark on printed matter by position transducer 15 and range sensor 14 exactly, determines the sample range of CCD scanning.
Described detection system is provided with controller 12, the drive motor 16 driving printed sheet to transmit controls rotating speed by described controller, for controlling drive motor 16 when carrying out pick-up pattern to CCD scanning head 2 and avoiding the adjustment of radium-shine shading reflected light lower than rated speed half-speed operation, behind the optimum position obtaining CCD scanning head 2 and/or angle, controlling drive motor 16 run well.
The information output of described CCD scanning head 2 is connected respectively to the input end of comparison amplifier 9 with master sample information 7 after low-pass filter 8, and the output terminal of comparison amplifier 9 connects alarm 10.
Described controller 12 is connected with storer 11, for storing the scanning information of described CCD scanning head 2 and the image information after low-pass filter 8 processes.Described detection system is provided with display 13, for showing the pattern after the process of master sample pattern, sampled scan pattern and low-pass filter 8.
Based on the holographic shading radium-shine wrappage press quality quantity measuring method of above-mentioned holographic shading radium-shine wrappage press quality amount detection systems, when carrying out the printing of each batch, complete the quality testing of printing printed sheet with the not radium-shine shading in fixed position according to following step:
The first step, to transhipment roller 4 pattern direction to be measured light LED light source 3, to transmit tested printed matter lower than the low speed of normal speed half;
The position of second step, adjustment CCD scanning head 2 and LED light source 3 and angle, until the pattern that CCD scanning head 2 gathers conforms to position with the size of standard model pattern; Determined the initial sum end time of a width pick-up pattern by the feedback signal of position transducer 15 and range sensor 14, gather test product pattern.
3rd step, driving keep away laser light driving mechanism 1, make CCD scanning head 2 through check point 17 and with the plane of transhipment roller 4 axes normal in do translation and to move and around the autorotation of central shaft, in contrast pick-up pattern, the effect of laser reflection light, gets CCD scanning head 2 position corresponding to the minimum pattern of laser reflection influence of light and angle;
4th step, startup rated speed transmit tested printed sheet;
5th step, to gathered pattern-information filtering process, compared by the pattern after filtering process with master sample information, gained deviation is greater than threshold value and then starts alert program, otherwise continues to detect next printed sheet.Send display to show in master sample pattern and the pattern after gathering filtering process, be convenient to hand inspection.Pattern after pattern after storage of collected and filtering process, puts on record as inspection.Preserve the deviate of the pattern-information after also statistical filtering process and master sample information, recommend rational deviation judgment threshold according to statistic algorithm.
From above-mentioned detection scheme, the present invention is in adjustment LED light source and CCD scanning head position, and after can accurately determining the sampling of pattern, also to carry out the adjustment of the reflected light avoiding laser light, to realize the present invention is directed to the object with the not printed matter print quality inspection of the radium-shine shading in fixed position.
Claims (8)
1. a holographic shading radium-shine wrappage press quality amount detection systems, for detecting the apparent mass of the not radium-shine shading printed matter of fixed position, it is characterized in that: have LED light source (3) and CCD scanning head (2) in the arranged outside of a transhipment roller (4) of support holographic laser shading printed sheet, described CCD scanning head (2) is arranged on to be kept away on laser light driving mechanism (1), described LED light source (3) and the asymmetric both sides being arranged at check point (17) normal of CCD scanning head (2), this is kept away laser light driving mechanism (1) and at least can to move and around central shaft autorotation with the rectilinear in planes of transhipment roller (4) axes normal through check point (17), enable CCD scanning head collect the clear pattern of printing by the reflected light of LED light source for adjusting CCD scanning head (2) and avoid the reflected light of radium-shine shading,
In the printing surface side in the tested printed sheet in described transhipment roller (4) front (5), position transducer (15) is housed, range sensor (14) is equipped with in the rotating shaft of described transhipment roller (4), for obtaining the position of sample pattern;
Described detection system is provided with controller (12), the drive motor (16) driving printed sheet to transmit controls rotating speed by described controller, operate with the speed lower than half rated speed for controlling drive motor (16) when carrying out pick-up pattern to CCD scanning head (2) and avoiding the adjustment of radium-shine shading reflected light, behind the optimum position obtaining CCD scanning head (2) and/or angle, control drive motor (16) run well;
The information output of described CCD scanning head (2) is connected respectively to the input end of comparison amplifier (9) with master sample information (7) after low-pass filter (8), and the output terminal of comparison amplifier (9) connects alarm (10);
Described LED light source (3) is arranged on one independently on multidimensional driving mechanism (18), what described CCD scanning head (2) was installed keeps away position and the angular adjustment that laser light driving mechanism (1) can carry out 6 degree of freedom, for the pre-adjustment to light source irradiation position and image information collecting position; The mixed lighting light that described LED light source adopts diffused light to be combined with direct light;
Described controller (12) is connected with storer (11), for storing the scanning information of described CCD scanning head (2) and the image information after low-pass filter (8) process.
2. holographic shading according to claim 1 radium-shine wrappage press quality amount detection systems, it is characterized in that: described detection system is provided with display (13), for showing the pattern after the process of master sample pattern, sampled scan pattern and low-pass filter (8).
3. holographic shading according to claim 1 radium-shine wrappage press quality amount detection systems, it is characterized in that: described range sensor (14) is mounted in the scrambler of transhipment roller (4) rotating shaft, described position transducer (15) is the photoelectric sensor identifying printed sheet photoelectric mark.
4. the holographic shading radium-shine wrappage press quality quantity measuring method based on the press quality amount detection systems described in any one of claims 1 to 3, it is characterized in that: when carrying out the printing of each batch, completing the quality testing of printing printed sheet with the not radium-shine shading in fixed position according to following step:
The first step, to transhipment roller (4) pattern direction to be measured light LED light source (3), to transmit tested printed matter lower than the low speed of normal speed half;
Second step, the position adjusting CCD scanning head (2) and LED light source (3) and angle, until the pattern that CCD scanning head (2) gathers conforms to position with the size of standard model pattern;
3rd step, driving keep away laser light driving mechanism (1), make CCD scanning head (2) through check point (17) and with the plane of transhipment roller (4) axes normal in do translation and to move and around the autorotation of central shaft, in contrast pick-up pattern, the effect of laser reflection light, gets CCD scanning head (2) position corresponding to the minimum pattern of laser reflection influence of light and angle;
4th step, startup rated speed transmit tested printed sheet;
5th step, to gathered pattern-information filtering process, compared by the pattern after filtering process with master sample information, gained deviation is greater than threshold value and then starts alert program, otherwise continues to detect next printed sheet.
5. holographic shading according to claim 4 radium-shine wrappage press quality quantity measuring method, it is characterized in that: in second step, determined the initial sum end time of a width pick-up pattern by the feedback signal of position transducer (15) and range sensor (14), gather test product pattern.
6. holographic shading according to claim 4 radium-shine wrappage press quality quantity measuring method, is characterized in that: in the 5th step, send display to show in master sample pattern and the pattern after gathering filtering process, is convenient to hand inspection.
7. holographic shading according to claim 4 radium-shine wrappage press quality quantity measuring method, is characterized in that: in the 5th step, and the pattern after the pattern after storage of collected and filtering process, puts on record as inspection.
8. holographic shading according to claim 4 radium-shine wrappage press quality quantity measuring method, it is characterized in that: in the 5th step, preserve the deviate of the pattern-information after also statistical filtering process and master sample information, recommend rational deviation judgment threshold according to statistic algorithm.
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| CN104034424B (en) * | 2014-05-30 | 2016-07-20 | 杭州电子科技大学 | The detection of a kind of facing paper printing quality and the method for analysis |
| CN104463189B (en) * | 2014-10-28 | 2017-12-05 | 北京凌云光技术有限责任公司 | Label design detection method and detection device |
| CN105241883B (en) * | 2015-09-25 | 2018-06-22 | 华南理工大学 | A kind of method of printing machine pattern on-line checking and color segmentation |
| CN105424700A (en) * | 2015-11-30 | 2016-03-23 | 常德金德镭射科技股份有限公司 | Quality detection device for high-precision laser packaging material presswork |
| EP3455826A1 (en) * | 2016-05-13 | 2019-03-20 | Bobst Mex Sa | A method of inspecting the quality of blanks, in particular of blanks to be processed into packaging material, and quality inspection system |
| CN110039916B (en) * | 2019-04-16 | 2020-06-26 | 珠海格力电器股份有限公司 | Printing quality detection method, computer device, and computer-readable storage medium |
| CN118882748B (en) * | 2024-09-27 | 2024-11-29 | 武汉银采天纸业股份有限公司 | Equipment monitoring management method and system for intelligent holographic laser printing equipment |
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| US4951223A (en) * | 1989-03-28 | 1990-08-21 | Langdon Wales R | Web material inspection system |
| JPH07190952A (en) * | 1993-12-27 | 1995-07-28 | Canon Inc | Image evaluation method and apparatus |
| JP2001311693A (en) * | 2000-04-28 | 2001-11-09 | Nitto Kogyo Co Ltd | Inspection apparatus |
| CN101339145B (en) * | 2008-08-20 | 2012-07-18 | 北京凌云光视数字图像技术有限公司 | Laser printing quality checking system and method based on CCD image-forming |
| CN201348611Y (en) * | 2009-01-12 | 2009-11-18 | 北京大恒图像视觉有限公司 | Quality detecting system for laser printed matter |
| JP2011247805A (en) * | 2010-05-28 | 2011-12-08 | Toppan Printing Co Ltd | Foil laminating inspector |
| CN102221560A (en) * | 2011-03-28 | 2011-10-19 | 上海科拓机电科技发展有限公司 | Automatic detection equipment of laser paper and laser membranes |
| CN103018243B (en) * | 2011-09-27 | 2015-08-05 | 中钞特种防伪科技有限公司 | For shielding the device of the hologram in detected material |
| CN203758924U (en) * | 2014-03-13 | 2014-08-06 | 武汉虹之彩包装印刷有限公司 | Quality detection system for holographic laser stripe packaging material presswork |
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