CN108481891B - Gravure plate roller detection equipment, gravure plate roller detection system and gravure plate roller detection method - Google Patents
Gravure plate roller detection equipment, gravure plate roller detection system and gravure plate roller detection method Download PDFInfo
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- CN108481891B CN108481891B CN201810388224.2A CN201810388224A CN108481891B CN 108481891 B CN108481891 B CN 108481891B CN 201810388224 A CN201810388224 A CN 201810388224A CN 108481891 B CN108481891 B CN 108481891B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Mechanical Engineering (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention provides gravure plate roller detection equipment, a gravure plate roller detection system and a gravure plate roller detection method. The gravure roll detection system comprises gravure roll detection equipment and a net hole detection device, wherein the gravure roll detection equipment is used for acquiring a three-dimensional image of a net hole of a gravure roll to be detected and sending the three-dimensional image to the net hole detection device; the net hole detection device is used for amplifying the three-dimensional image, calculating the ink carrying quantity of the detection area and the net hole volume of each net hole in the three-dimensional image, and outputting an alarm signal when the ink carrying quantity is lower than a preset volume value. The invention can enable a technician to recognize the reticulate pattern information of the gravure roller, amplify reticulate pattern and generate an image, so that the reticulate pattern quality condition of the gravure roller is intuitively presented to the technician, and simultaneously, a three-dimensional image can be synthesized, so that the three-dimensional image is more concise and visual, if unqualified units and/or areas are detected, the unqualified units and/or areas are marked on the image, and if the network hole capacity of the units and/or the areas is lower than a preset limit value, an alarm signal is automatically sent to prompt the technician to pay attention.
Description
Technical Field
The invention relates to the field of printing, in particular to gravure plate roller detection equipment, a gravure plate roller detection system and a gravure plate roller detection method.
Background
The intaglio printing is to coat the whole surface of the printing plate with ink, then to remove the ink in the blank part by a doctor blade, to make the ink remain in the net holes of the image-text part, and to transfer the ink to the surface of the printing stock under the action of pressure, thus obtaining the printed matter. Intaglio printing belongs to direct printing. The image-text part of the printing plate is concave, the concave degree is different with the level of the image, and the blank part of the printing plate is convex and is on the same plane. The ink-carrying capacity of the gravure roll cells determines how much ink is transferred during printing. In the production process, the gravure plate roller can gradually generate abrasion under the pressure of the doctor blade to influence the ink carrying quantity, and meanwhile, partial ink is deposited and solidified at the bottom of the net hole in the production process, so that the quantity of transferred ink is reduced, and the quality of a product is further influenced.
During the production and printing process, if workers find that the printing quality is wrong, such as color is reduced, the ink may be too shallow, the ink may be dried at the bottom of the printing plate mesh, or a doctor blade may wear the printing plate mesh, and the like. The staff often cannot accurately judge the problem occurrence part, so that the inspection and maintenance cost is increased, and the smooth proceeding of normal production is affected. At present, most printing plate rollers which are not inspected and have problems adopt a disposal mode, and the printing plate rollers of the blocking plates can be used continuously after being cleaned, if the printing plate rollers are directly discarded, the generation cost is increased, and the reasonable utilization of resources is not facilitated.
There is thus a need for improvements and improvements in the art.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide an intaglio roller detection apparatus, detection system and detection method thereof, which assist the technician in quality control of the intaglio roller.
In order to solve the technical problems, the invention adopts the following technical scheme:
The gravure roller detection system comprises gravure roller detection equipment and a net hole detection device, wherein the gravure roller detection equipment is connected with the net hole detection device through an interface module;
The gravure roll detection equipment is used for acquiring a three-dimensional image of a net pit of the gravure roll to be detected and sending the three-dimensional image to the net pit detection device;
the network point detection device is used for amplifying the three-dimensional image, calculating the ink carrying quantity of the detection area and the network point volume of each network point in the three-dimensional image, and outputting an alarm signal when the ink carrying quantity is lower than a preset volume value;
Wherein: the gravure roll detection equipment comprises a machine base, a bracket for enabling the gravure roll detection equipment to be stably placed on a gravure roll to be detected, a camera component for acquiring three-dimensional images of net holes of the gravure roll to be detected with a supporting plate and an interface module for transmitting image information, wherein the interface module is positioned on one side of the machine base, the camera component is slidably arranged on the other side of the machine base, and the machine base is fixed on the bracket;
The camera shooting assembly comprises a lens and an adjusting part for adjusting the magnification and the height of the lens, the lens is arranged on one side of the lower part of the adjusting part, the focal length of the camera shooting assembly is adjusted by adjusting the height of the camera shooting assembly relative to the machine seat, so that the camera shooting assembly can acquire clear images, the supporting plate is arranged below the adjusting part, and a through hole for taking images by the lens is formed in the supporting plate; the upper part of the adjusting part is provided with a handle, one end of the handle is also provided with a spherical handle, the handle is used for a user to carry the gravure printing roller detection equipment, and the spherical handle is used for locking the adjusting part on the machine base; a sliding rail is arranged on one side of the adjusting component connected with the base and is matched with the sliding groove of the base so as to enable the adjusting component to automatically and vertically lift when the magnification factor is changed;
The support comprises a pair of support rods which are arranged in parallel, and rubber sleeves are arranged at two ends of the support rods;
The middle of the handle is provided with an intermediate lock rod, a corresponding position on the base is provided with a threaded hole, one end of the intermediate lock rod is connected with a spherical handle, and the other end of the intermediate lock rod is provided with threads and is matched with the threaded hole on the base to form locking;
the network point detection device comprises:
The image setting module is used for setting the magnification of the three-dimensional image, the display angle, the gray scale, the color, the brightness and/or the contrast of the three-dimensional image;
the image cutting module is used for cutting image fragments in the three-dimensional image;
and the curve generating module is used for generating a curve of the longitudinal section shape of each net pit according to the shape of each net pit.
In a preferred embodiment, the mesh point detection device is further configured to mark an unqualified mesh point in the three-dimensional image, and generate a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned.
In a preferred embodiment, the network point detection device further comprises:
The camera control module is used for adjusting the focal length of a camera of the gravure roll detection device and controlling the camera to scan layer by layer from the top to the bottom of the net hole;
the image amplifying module is used for amplifying the three-dimensional image acquired by the gravure roll detecting equipment;
the image synthesis module is used for synthesizing the images obtained by scanning the cameras layer by layer into three-dimensional images;
the calculation module is used for calculating the ink carrying quantity of the detection area and the net hole volume of each net hole in the three-dimensional image;
And the alarm module is used for outputting an alarm signal when the ink carrying quantity is lower than a preset capacity value.
In a preferred embodiment, the mesh point detection device further comprises:
And the report generation module is used for marking the unqualified area on the three-dimensional image and indicating the opening degree, the depth and/or the volume of the unqualified net pit.
The detection method of the gravure plate roller detection system comprises the following steps:
acquiring a three-dimensional image of a net pit of the gravure roll to be detected by gravure roll detection equipment, and sending the three-dimensional image to a net pit detection device;
Amplifying the three-dimensional image by the network point detection device, calculating the ink carrying quantity of the detection area and the network point volume of each network point in the three-dimensional image, and outputting an alarm signal when the ink carrying quantity is lower than a preset volume value;
the three-dimensional image is amplified by the net point detection device, the ink carrying quantity of the detection area and the net point volume of each net point in the three-dimensional image are calculated, and when the ink carrying quantity is lower than a preset volume value, the step of outputting an alarm signal comprises the following steps:
Setting the magnification of the three-dimensional image, the display angle, gray scale, color, brightness and/or contrast of the three-dimensional image, and displaying the three-dimensional image in real time according to the setting parameters;
receiving a cutting instruction, and cutting an image fragment in the three-dimensional image;
and generating a curve of the longitudinal section shape of each net pit according to the shape of each net pit.
In a preferred embodiment, the method further comprises the steps of amplifying the three-dimensional image by the ink-receiving device, calculating the ink-receiving volume of the detection area and the cell volume of each cell in the three-dimensional image, and outputting an alarm signal when the ink-receiving volume is lower than a preset volume value:
Marking out-of-fit network holes in the three-dimensional image, and generating a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned.
In a preferred embodiment, the three-dimensional image is amplified by the ink-receiving device, and the ink-receiving volume of the detection area and the cell volume of each cell in the three-dimensional image are calculated, and the step of outputting the alarm signal when the ink-receiving volume is lower than the preset volume value comprises:
Adjusting the focal length of a camera of gravure roller detection equipment, and controlling the camera to scan layer by layer from the top to the bottom of the net hole;
synthesizing the images obtained by scanning the cameras layer by layer into three-dimensional images, and amplifying the three-dimensional images;
calculating the ink carrying quantity of the detection area and the cell volume of each cell;
And outputting an alarm signal when the ink carrying quantity is lower than a preset capacity value.
Further, the step of amplifying the three-dimensional image by the network point detection device, calculating the ink carrying amount of the detection area and the network point volume of each network point in the three-dimensional image, and outputting an alarm signal when the ink carrying amount is lower than a preset volume value further comprises:
Marking out-of-fit network holes in the three-dimensional image, and generating a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned.
In a preferred embodiment, the method includes marking the non-fit cells in the three-dimensional image and generating a detection result; the detection result comprises: the steps of the net pit abrasion to be scrapped and the net pit blockage to be cleaned include:
Marking unqualified areas on the three-dimensional image, and marking the opening degree, the depth and/or the volume of the net holes of the unqualified net holes;
When the opening degree of each net point is smaller than a preset value, marking that the net point is worn and scrapped; when the opening degree of each net point is normal and the depth of the net point is smaller than a preset value, the net point blockage needs to be cleaned.
Compared with the prior art, the invention provides the gravure roller detection equipment, the detection system and the detection method thereof, which help technicians to recognize and acquire the reticulate pattern information of the gravure roller, enlarge reticulate patterns and generate images, so that the reticulate pattern quality condition of the gravure roller is intuitively presented to the technicians, simultaneously, three-dimensional images can be synthesized, the three-dimensional images are more concise and intuitive, if unqualified units and/or areas are detected, the unqualified units and/or areas are marked on the images, and if the reticulate pattern capacity of the units and/or the areas is lower than a preset limit value, alarm signals can be automatically sent to prompt the technicians to pay attention. In addition, the invention can calculate the performance data such as the arrangement angle, the line number, the ink carrying amount, the wall thickness, the depth of the net pit, the opening degree of the net pit and the like of the net pit of the detection area, and generate a quality report, thereby being beneficial to technical management. The invention provides a simple, professional and scientific quality control means for the gravure roller for technicians, reduces unnecessary maintenance cost and ensures the smooth performance of normal production.
Drawings
Fig. 1 is a schematic view showing a structure of an intaglio roller detecting apparatus according to the present invention.
Fig. 2 is a block diagram of a pit detection device of the gravure roll detection system according to the present invention.
FIG. 3 is a flow chart of a detection method of the gravure roll detection system provided by the present invention.
Fig. 4 is a flowchart of step S200 in the inspection method of the gravure roll inspection system according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It is noted that when an element is referred to as being "mounted," "secured," or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
It should be noted that, in the embodiments of the present invention, terms such as left, right, up, and down are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.
As shown in fig. 1, the present invention provides an intaglio roller detecting apparatus, comprising a stand 10, a support 20 for stably placing the intaglio roller detecting apparatus on an intaglio roller to be detected, an image pickup assembly 30 for obtaining a three-dimensional image of a net hole of the intaglio roller to be detected, and an interface module 40 for transmitting image information, wherein the interface module 40 is located at one side of the stand 10, the image pickup assembly 30 is slidably installed at the other side of the stand 10, and the stand 10 is fixed on the support 20.
The invention mainly acquires the surface reticulate pattern information of the gravure roller through the gravure roller detection equipment, and has the main functions of imaging and amplifying reticulate pattern of a detection area and scanning the detection area so as to facilitate subsequent observation and calculation processing.
Further, the support 20 includes a pair of support rods 21 arranged in parallel so that the gravure roll inspection apparatus is stably seated on the gravure roll to ensure stable and efficient operation of the gravure roll inspection apparatus.
Preferably, rubber sleeves 22 are further arranged at two ends of the supporting rod 21 to further ensure the stability of the gravure roller detection device, and the rubber sleeves 22 can be silica gel sleeves so as to prevent the gravure roller from being damaged when the gravure roller detection device detects.
Specifically, a sliding groove (not shown) is provided on a side wall of the other side of the stand 10, and a sliding rail (not shown) that mates with the sliding groove is correspondingly provided on the camera assembly 30. In this embodiment, the image capturing assembly 30 includes a lens 32 and an adjusting component 31 for adjusting the magnification and the height of the lens 32, wherein the lens 32 is mounted at one side of the lower portion of the adjusting component 31, and the focal length of the image capturing assembly is adjusted by adjusting the height of the image capturing assembly 30 relative to the stand 10, so that the image capturing assembly can obtain a clear image.
Further, the camera assembly 30 further includes a support plate 33, the support plate 33 is disposed below the adjusting member 31, and a through hole 331 for capturing an image of the lens 32 is provided on the support plate 33. The adjusting component 31 includes an optical device (not shown) for adjusting the magnification and a mechanical assembly (not shown) for lifting, and the optical device for microscopic magnification and the mechanical means for simple lifting are both of the prior art, which are not described herein.
Specifically, a slide rail is disposed on one side of the adjusting component 31 connected to the base 10, and is matched with a slide slot of the base 10, so that the adjusting component 31 can automatically and vertically lift when changing the magnification factor, so as to ensure the imaging definition.
Preferably, the upper part of the adjusting part 31 is further provided with a handle 34, one end of the handle 34 is further provided with a spherical handle 35, the handle 34 is used for a user to carry the gravure roll detection device, and the spherical handle 35 is used for locking the adjusting part 31 on the stand 10, so that the adjusting part 31 is prevented from sliding up and down when the user carries the gravure roll detection device, and the precise optical devices inside the gravure roll detection device are prevented from being damaged or shifted. The locking mode may be that an intermediate lock rod (not numbered in the figure) is arranged in the middle of the handle 34, a threaded hole (not shown in the figure) is arranged at a corresponding position on the stand 10, one end of the intermediate lock rod is connected with the spherical handle 35, and the other end of the intermediate lock rod is provided with threads and is matched with the threaded hole on the stand 10 to form locking. The optional locking modes are simple and various, and are not described in detail herein.
Based on the gravure roll detection equipment, the invention also provides a gravure roll detection system which comprises the gravure roll detection equipment and the net hole detection device, wherein the gravure roll detection equipment is connected with the net hole detection device through an interface module.
The gravure roll detection equipment is used for acquiring a three-dimensional image of a net pit of the gravure roll to be detected and sending the three-dimensional image to the net pit detection device; the net point detection device is used for amplifying the three-dimensional image, calculating the ink carrying quantity of the detection area and the net point volume of each net point in the three-dimensional image, and outputting an alarm signal when the ink carrying quantity is lower than a preset volume value.
In the embodiment of the invention, the gravure plate roller detection equipment is used for information acquisition, and the net hole detection device is used for information processing, data output and presentation. The technical staff can control the gravure plate roller detection equipment to scan, (focus) image and zoom the reticulate pattern of the detection area through the reticulate pattern detection device, and visual and clear image display and performance parameter giving are obtained, so that the quality condition of the detected gravure plate roller can be comprehensively, scientifically and accurately known. In addition, for the gravure plate roller detection of same or same type, the technician sets up the default capacity value, net cave detection device automated inspection is fast to be compared, if there is the problem, sends alarm signal prompt technician promptly, is favorable to reducing judgement process, shortens judgement time.
Preferably, the mesh point detection device is further used for marking an unqualified mesh point in the three-dimensional image and generating a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned. The invention helps technicians to quickly notice the problem areas by marking the non-fit net holes; the detection result can be generated, the technician is directly helped to obtain the solution of the problem, and due to the fact that the judging process is omitted, even non-professional technicians can obtain a more accurate solution, a new person can easily get on hand, popularization is facilitated, and production labor cost, time cost and training cost are reduced.
Preferably, referring to fig. 2, the network point detection device includes: a camera control module 51, an image magnification module 52, an image synthesis module 53, a calculation module 54, and an alarm module 55.
The camera control module is used for adjusting the focal length of a camera of the gravure roll detection device and controlling the camera to scan layer by layer from the top to the bottom of the net hole;
the image amplifying module is used for amplifying the three-dimensional image acquired by the gravure roll detecting equipment;
the image synthesis module is used for synthesizing the images obtained by scanning the cameras layer by layer into three-dimensional images;
the calculation module is used for calculating the ink carrying quantity of the detection area and the net hole volume of each net hole in the three-dimensional image;
And the alarm module is used for outputting an alarm signal when the ink carrying quantity is lower than a preset capacity value.
Preferably, the mesh point detection device further comprises:
the image setting module 56 is configured to set a magnification of the three-dimensional image, a display angle of the three-dimensional image, a gray scale, a color, a brightness, and/or a contrast.
The invention can make various problems and defects of the gravure roller more clear and obvious through color processing on the image. If cracks (especially ceramic plate rollers) appear on the reticulate patterns due to collision, the cracks can be quite obvious by adjusting the gray level; but the reticulation conditions of reticulation with different depth layers are represented by a plurality of colors, so that the conditions of abrasion of the reticulation wall or existence of dry ink at the bottom of the reticulation pit can be highlighted. The invention increases the visibility of defects of the gravure roller problem and is beneficial to the visual understanding of technicians.
Further, the mesh point detection device further includes: an image cutting module 57 and a curve generating module 58, wherein the image cutting module 57 is used for cutting out image fragments in a three-dimensional image; a curve generating module 58, configured to generate a curve of the longitudinal cross-sectional shape of each cell according to the shape of each cell.
According to the gravure roll detection system, a technician can cut and select on the image to obtain a section of net hole shape curve of the cut and select area, and a foundation (such as comparison among different types of gravure rolls) is provided for the intensive study of the technician.
Preferably, the mesh point detection device further comprises: and the report generation module is used for marking the disqualified area on the three-dimensional image and indicating the opening degree (namely the opening size of the net pit), the net pit depth and/or the net pit volume of the disqualified net pit.
In addition, the generated report also comprises performance parameters such as the net pit arrangement angle, the line number, the net pit opening degree, the net pit depth, the net wall width, the ink carrying amount and the like of the detected gravure plate roller. Besides the feedback problem, the report generation can also embody the performance condition of the gravure roller, is beneficial to archiving technical data, is beneficial to technical management, and provides guarantee for quality control of production development.
Based on the above gravure roll detection system, the present invention also provides a detection method of the gravure roll detection system, referring to fig. 3, the detection method includes the following steps:
S100, acquiring a three-dimensional image of a net hole of a gravure roll to be detected by gravure roll detection equipment, and sending the three-dimensional image to a net hole detection device;
And S200, amplifying the three-dimensional image by the network point detection device, calculating the ink carrying quantity of the detection area and the network point volume of each network point in the three-dimensional image, and outputting an alarm signal when the ink carrying quantity is lower than a preset volume value.
Wherein, the step S200 further includes: marking out-of-fit network holes in the three-dimensional image, and generating a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned.
Further, referring to fig. 4, the step S200 further includes:
S201, adjusting the focal length of a camera of gravure roll detection equipment, and controlling the camera to scan layer by layer from the top to the bottom of a net hole;
S202, synthesizing an image obtained by scanning the camera layer by layer into a three-dimensional image, and amplifying the three-dimensional image;
S203, calculating the ink carrying quantity of the detection area and the cell volume of each cell;
S204, outputting an alarm signal when the ink carrying quantity is lower than a preset capacity value.
Further, the step S200 further includes: marking out-of-fit network holes in the three-dimensional image, and generating a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned.
Further, the step S200 further includes: setting the magnification of the three-dimensional image, the display angle, gray scale, color, brightness and/or contrast of the three-dimensional image, and displaying the three-dimensional image in real time according to the setting parameters.
Further, the step S200 further includes:
receiving a cutting instruction, and cutting an image fragment in the three-dimensional image;
and generating a curve of the longitudinal section shape of each net pit according to the shape of each net pit.
Further, marking an unsuitable net hole in the three-dimensional image, and generating a detection result; the detection result comprises: the steps of the net pit abrasion to be scrapped and the net pit blockage to be cleaned include:
Marking unqualified areas on the three-dimensional image, and marking the opening degree, the depth and/or the volume of the net holes of the unqualified net holes;
When the opening degree of each net point is smaller than a preset value, marking that the net point is worn and scrapped; when the opening degree of each net point is normal and the depth of the net point is smaller than a preset value, the net point blockage needs to be cleaned.
In summary, the invention mainly acquires the surface reticulate pattern information of the gravure roller through the gravure roller detection equipment, and has the main functions of imaging and amplifying reticulate patterns of a detection area and scanning the reticulate patterns so as to facilitate subsequent observation and calculation processing. Then, the technician controls the gravure roller detection equipment to scan, (focus) image and zoom the reticulate pattern of the detection area through the reticulate pattern detection device, and visual and clear image display and performance parameter giving are obtained, so that the quality condition of the detected gravure roller is comprehensively, scientifically and accurately known. In addition, for the gravure plate roller detection of same or same type, the technician sets up the default capacity value, net cave detection device automated inspection is fast to be compared, if there is the problem, sends alarm signal prompt technician promptly, is favorable to reducing judgement process, shortens judgement time.
Meanwhile, the mesh point detection device can also mark an unqualified mesh point in the three-dimensional image and generate a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned. Marking out-of-fit cells, helping technicians to quickly notice problem areas; the detection result can be generated, the technician is directly helped to obtain the solution of the problem, and even non-professional technicians can obtain a more accurate solution because the judgment process is omitted, so that the method is easy to operate, convenient to popularize and beneficial to reducing the labor cost, time cost and training cost of production.
Moreover, the invention can make various defects of the gravure plate roller more clear and obvious through color processing on the image. If cracks (especially ceramic plate rollers) appear on the reticulate patterns due to collision, the cracks can be quite obvious by adjusting the gray level; but the reticulation conditions of reticulation with different depth layers are represented by a plurality of colors, so that the conditions of abrasion of the reticulation wall or existence of dry ink at the bottom of the reticulation pit can be highlighted. The invention increases the visibility of defects of the gravure roller problem and is beneficial to the visual understanding of technicians.
Moreover, the technicians can cut and select on the image to obtain a section of net hole shape curve of the cut and select area, so as to provide a foundation for the intensive study of the technicians (such as the comparison between different types of gravure printing plate rollers).
In addition, the invention can also generate technical reports, mark unqualified areas on the three-dimensional image and indicate the opening degree, the depth and/or the volume of the unqualified net holes. And the generated report also comprises performance parameters such as the net pit arrangement angle, the line number, the net pit opening degree, the net pit depth, the net wall width, the ink carrying amount and the like of the detected gravure plate roller. Besides the feedback problem, the report generation can also embody the performance condition of the gravure roller, is beneficial to archiving technical data, is beneficial to technical management, and provides guarantee for quality control of production development.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present invention and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the following claims.
Claims (5)
1. The gravure roller detection system is characterized by comprising gravure roller detection equipment and a net pit detection device, wherein the gravure roller detection equipment is connected with the net pit detection device through an interface module;
The gravure roll detection equipment is used for acquiring a three-dimensional image of a net pit of the gravure roll to be detected and sending the three-dimensional image to the net pit detection device;
the network point detection device is used for amplifying the three-dimensional image, calculating the ink carrying quantity of the detection area and the network point volume of each network point in the three-dimensional image, and outputting an alarm signal when the ink carrying quantity is lower than a preset volume value;
Wherein:
The gravure roll detection equipment comprises a machine base, a bracket for enabling the gravure roll detection equipment to be stably placed on a gravure roll to be detected, a camera component for acquiring a three-dimensional image of a net hole of the gravure roll to be detected and an interface module for transmitting image information, wherein the interface module is positioned on one side of the machine base, the camera component is slidably arranged on the other side of the machine base, and the machine base is fixed on the bracket;
the camera shooting assembly comprises a lens, an adjusting part for adjusting the magnification and the height of the lens and a supporting plate, wherein the lens is arranged on one side of the lower part of the adjusting part, the focal length of the camera shooting assembly is adjusted by adjusting the height of the camera shooting assembly relative to the machine seat, so that the camera shooting assembly can acquire clear images, the supporting plate is arranged below the adjusting part, and a through hole for taking images by the lens is formed in the supporting plate; the upper part of the adjusting part is provided with a handle, one end of the handle is also provided with a spherical handle, the handle is used for a user to carry the gravure printing roller detection equipment, and the spherical handle is used for locking the adjusting part on the machine base; a sliding rail is arranged on one side of the adjusting component connected with the base and is matched with the sliding groove of the base so as to enable the adjusting component to automatically and vertically lift when the magnification factor is changed;
The support comprises a pair of support rods which are arranged in parallel, and rubber sleeves are arranged at two ends of the support rods;
The middle of the handle is provided with an intermediate lock rod, a corresponding position on the base is provided with a threaded hole, one end of the intermediate lock rod is connected with a spherical handle, and the other end of the intermediate lock rod is provided with threads and is matched with the threaded hole on the base to form locking;
the network point detection device comprises:
The image setting module is used for setting the magnification of the three-dimensional image, the display angle, the gray scale, the color, the brightness and/or the contrast of the three-dimensional image;
the image cutting module is used for cutting image fragments in the three-dimensional image;
The curve generating module is used for generating a curve of the longitudinal section shape of each net pit according to the shape of each net pit;
The network point detection device is also used for marking the non-qualified network points in the three-dimensional image and generating a detection result; the detection result comprises: the net hole is worn out and scrapped, and the net hole is blocked and needs to be cleaned;
the step of the net pit abrasion to be scrapped and the net pit blockage to be cleaned comprises the following steps:
Marking unqualified areas on the three-dimensional image, and marking the opening degree, the depth and/or the volume of the net holes of the unqualified net holes;
when the opening degree of each net point is smaller than a preset value, marking that the net point is worn and scrapped; when the opening degree of each net point is normal and the depth of the net point is smaller than a preset value, the net point blockage needs to be cleaned;
The mesh point detection device further includes:
The camera control module is used for adjusting the focal length of a camera of the gravure roll detection device and controlling the camera to scan layer by layer from the top to the bottom of the net hole;
the image amplifying module is used for amplifying the three-dimensional image acquired by the gravure roll detecting equipment;
the image synthesis module is used for synthesizing the images obtained by scanning the cameras layer by layer into three-dimensional images;
the calculation module is used for calculating the ink carrying quantity of the detection area and the net hole volume of each net hole in the three-dimensional image;
And the alarm module is used for outputting an alarm signal when the ink carrying quantity is lower than a preset capacity value.
2. A method of detecting an intaglio roller detecting system according to claim 1, comprising the steps of:
acquiring a three-dimensional image of a net pit of the gravure roll to be detected by gravure roll detection equipment, and sending the three-dimensional image to a net pit detection device;
Amplifying the three-dimensional image by the network point detection device, calculating the ink carrying quantity of the detection area and the network point volume of each network point in the three-dimensional image, and outputting an alarm signal when the ink carrying quantity is lower than a preset volume value;
the three-dimensional image is amplified by the net point detection device, the ink carrying quantity of the detection area and the net point volume of each net point in the three-dimensional image are calculated, and when the ink carrying quantity is lower than a preset volume value, the step of outputting an alarm signal comprises the following steps:
Setting the magnification of the three-dimensional image, the display angle, gray scale, color, brightness and/or contrast of the three-dimensional image, and displaying the three-dimensional image in real time according to the setting parameters;
receiving a cutting instruction, and cutting an image fragment in the three-dimensional image;
and generating a curve of the longitudinal section shape of each net pit according to the shape of each net pit.
3. The method according to claim 2, wherein the step of amplifying the three-dimensional image by the cell detection device and calculating the ink loading of the detection area and the cell volume of each cell in the three-dimensional image, and outputting an alarm signal when the ink loading is lower than a preset volume value, further comprises:
Marking out-of-fit network holes in the three-dimensional image, and generating a detection result; the detection result comprises: the net pit is worn out and scrapped, and the net pit is blocked and needs to be cleaned.
4. The method according to claim 2, wherein the step of amplifying the three-dimensional image by the cell detection device and calculating the ink loading of the detection area and the cell volume of each cell in the three-dimensional image, and outputting an alarm signal when the ink loading is lower than a preset volume value comprises:
Adjusting the focal length of a camera of gravure roller detection equipment, and controlling the camera to scan layer by layer from the top to the bottom of the net hole;
synthesizing the images obtained by scanning the cameras layer by layer into three-dimensional images, and amplifying the three-dimensional images;
calculating the ink carrying quantity of the detection area and the cell volume of each cell;
And outputting an alarm signal when the ink carrying quantity is lower than a preset capacity value.
5. The method according to claim 3, wherein the step of marking the non-fit cells in the three-dimensional image and generating a detection result; the detection result comprises: the steps of the net pit abrasion to be scrapped and the net pit blockage to be cleaned include:
Marking unqualified areas on the three-dimensional image, and marking the opening degree, the depth and/or the volume of the net holes of the unqualified net holes;
When the opening degree of each net point is smaller than a preset value, marking that the net point is worn and scrapped; when the opening degree of each net point is normal and the depth of the net point is smaller than a preset value, the net point blockage needs to be cleaned.
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