CN116653461B - Multiple positioning printing method for paperboard color printing - Google Patents
Multiple positioning printing method for paperboard color printing Download PDFInfo
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- CN116653461B CN116653461B CN202310671563.2A CN202310671563A CN116653461B CN 116653461 B CN116653461 B CN 116653461B CN 202310671563 A CN202310671563 A CN 202310671563A CN 116653461 B CN116653461 B CN 116653461B
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- 239000011087 paperboard Substances 0.000 title claims abstract description 176
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000002093 peripheral effect Effects 0.000 claims description 44
- 230000008569 process Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000011111 cardboard Substances 0.000 description 7
- 238000004806 packaging method and process Methods 0.000 description 7
- 239000003086 colorant Substances 0.000 description 5
- 239000000976 ink Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/14—Multicolour printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/74—Auxiliary operations
- B31B50/88—Printing; Embossing
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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- Printing Methods (AREA)
Abstract
The invention discloses a multiple positioning printing method for paperboard color printing, which particularly relates to the technical field of paperboard printing. According to the printing position and the color printing size of the target paperboard, the invention realizes the effect of multiple positioning printing on a plurality of execution paperboards, and realizes the copy and paste effect of the execution paperboards taking the target paperboard as a reference, thereby ensuring that the color printing image and the size of each paperboard are in the same position, improving the color printing effect and the color printing efficiency of the paperboards, adjusting the position of a printing plate according to the error of the color printing positions among the paperboards, and reducing the phenomenon of double image caused by the gradual increase of the error on the printing of the last paperboard.
Description
Technical Field
The invention relates to the technical field of paperboard printing, in particular to a multi-positioning printing method for paperboard color printing.
Background
At present, products sold in the market need to be packaged through a packaging box, on the one hand, for the aesthetic property after packaging, on the other hand, the products can be reduced to be damaged, the packaging box is mainly formed by assembling paperboards, and in order to achieve the aesthetic property of the packaging box, the paperboards used for the packaging box are required to be subjected to color printing treatment, and different images are printed on the surfaces of the paperboards through printing technology so as to highlight the aesthetic property of the packaging box.
In the existing cardboard printing, the spot color printing is a printing process of reproducing primary colors with inks of colors other than yellow, magenta, blue and black, and in the packaging printing, the spot color printing process is often used for printing a large area of ground color, while the four color printing is a printing of a color picture by three subtractive primary colors and black, the primary color images used for printing must be separated into respective color separators, and black color separators are added to correct the blue, magenta and yellow inks so as to improve the blackness of the printed image, however, whichever printing mode is adopted needs to position and print the cardboard.
The positioning printing popular is that the printing pictures and the printing positions of a plurality of paperboards are the same, so that the copying and pasting of a plurality of paperboards color printing images are realized.
At present, when the positioning printing is performed on the paper board, a color printing target needs to be found as a reference, and because only a single reference point is arranged on the paper, each layer is repeatedly printed according to the position of the last printed layer during printing, so that certain errors can be accumulated after each printing, when the printing is performed on the last paper board, the errors of the printing are accumulated greatly, the phenomenon of double image and blurring can occur at the edge of the printed pattern on the finally obtained paper board, and under the condition of large color printing quantity, the workload of staff is huge, and the accurate color printing effect cannot be realized.
Aiming at the situation, the invention provides a multi-positioning printing method for paperboard color printing.
Disclosure of Invention
The technical scheme of the invention aims at the technical problem that the prior art is too single, provides a solution which is obviously different from the prior art, and provides a multi-positioning printing method for color printing of paperboards in order to overcome the defects of the prior art, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the multi-positioning printing method for the paperboard color printing specifically comprises the following steps:
firstly, before printing, numbering a specific color block on a printing plate of a printing machine, wherein the numbering specifically comprises a central numbering and a peripheral numbering, the shape of the peripheral numbering is a rectangular structure, different printing plates are specifically selected according to the color printing condition, the central numbering is positioned at the very center of the peripheral numbering, and the peripheral numbering is preferably quadrilateral;
in the printing system, firstly, an executing mechanism in the system drives a printing plate to carry out numbering printing treatment on the surface of one of the paperboards, at the moment, the surface of one of the paperboards is marked with a peripheral number and a central number, the peripheral number and the central number are used as the standard of multi-positioning printing, the paperboards printed with the numbers are used as target printing paperboards, and the paperboards which are not printed are used as executing paperboards;
collecting the paperboards printed with the central numbers and the peripheral numbers through a camera, inputting the central numbers and the peripheral numbers into a printing system for identification, automatically calculating the printing position of the surface of each paperboard according to the conveying position and the size of each paperboard by the system, and carrying out printing treatment on the paperboard by combining the target paperboard;
and step four, when the paperboard printed with the color printing is in the process of printing and conveying, the camera collects and transmits the number information to the printing system, and the execution structure adjusts the position of the printing plate, so that the position of the color printing printed on the next paperboard is at the same position of the last paperboard when the next paperboard is printed.
Preferably, the central number and the peripheral number are the same in identification mode, the CCD camera is used for collecting data of the target paperboard printed with the numbers, and a light source is arranged on the surface of the CCD camera.
Preferably, in the printing identification, if the printed paper board with the number is marked as N, the next printed paper board takes the printing position of the N paper board as a reference, and the same position of the next paper board is adjusted and printed according to the printing position of the last paper board, and the printing operation in a complete printing cycle is as follows: n-n+1-n+1+1-n+1+1+1.
Preferably, after completing one printing cycle, the system automatically calculates the error between the target paper board and the execution paper board, and selects the error which is the smallest with the target paper board as the target color printing execution;
in one period, the error between N and N+1 is 50 μm, the error between N+1 and N+1+1 is 80 μm, the error between N+1 and N+1+1+1 is 60 μm, the system takes the error of 50 μm as a printing standard, and so on.
Preferably, the printing cycle is a cycle of printing on a target paper board and executing color on the paper board, 12 paper boards need to be printed in a printing system, and then the 12 paper boards are printed to form a complete printing cycle.
Preferably, in the process of coding identification, the system firstly identifies the peripheral number, and if the peripheral number identification is wrong, the central number is used as a reference.
The invention has the technical effects and advantages that:
through numbering specific color blocks on a printing plate in a printing system, after one paperboard is subjected to color printing treatment, the surface of the paperboard is provided with numbered color printing, the paperboard is taken as a target paperboard N, when the next paperboard is subjected to color printing, a CCD camera shoots and identifies the numbering information of the target paperboard N, the color printing position and the size of the target paperboard N are identified, identification data are transmitted to the printing system, the system controls the position of the printing plate through an executing mechanism, and the next paperboard is subjected to color printing treatment, and is marked as N+1, and the mode can realize that the color printing positions and the sizes of a plurality of paperboards are the same, so that the copy and paste effect of the color printing of the plurality of paperboards is realized;
after the paperboard color printing of a complete period is completed, the error of the color printing positions of every two adjacent paperboards is automatically calculated, the minimum error is taken as the color printing reference, the phenomenon that double images and blurring occur in the color printing of the last paperboard surface due to slow accumulation of errors in the color printing process of a plurality of paperboards can be reduced, in addition, the accuracy of the color printing of the paperboards can be improved by adopting two numbering positioning printing modes, the phenomena of number failure and recognition errors are avoided, the color printing efficiency of the paperboards is improved, and the workload of workers is reduced.
Drawings
Fig. 1 is an overall flow chart of the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
The multi-positioning printing method for the paperboard color printing specifically comprises the following steps:
firstly, before printing, numbering a specific color block on a printing plate of a printing machine, wherein the numbering specifically comprises a central numbering and a peripheral numbering, the peripheral numbering has quadrilateral, rectangular and special-shaped structures, different printing plates are specifically selected according to color printing conditions, and the central numbering is positioned at the very center of the peripheral numbering;
in the printing system, firstly, an executing mechanism in the system drives a printing plate to carry out numbering printing treatment on the surface of one of the paperboards, at the moment, the surface of one of the paperboards is marked with a peripheral number and a central number, the peripheral number and the central number are used as the standard of multi-positioning printing, the paperboards printed with the numbers are used as target printing paperboards, and the paperboards which are not printed are used as executing paperboards;
collecting the paperboards printed with the central numbers and the peripheral numbers through a camera, inputting the central numbers and the peripheral numbers into a printing system for identification, automatically calculating the printing position of the surface of each paperboard according to the conveying position and the size of each paperboard by the system, and carrying out printing treatment on the paperboard by combining the target paperboard;
and step four, when the paperboard printed with the color printing is in the process of printing and conveying, the camera collects and transmits the number information to the printing system, and the execution structure adjusts the position of the printing plate, so that the position of the color printing printed on the next paperboard is at the same position of the last paperboard when the next paperboard is printed.
Specifically, the central number and the peripheral number are the same in identification mode, a CCD camera is used for collecting data of the target paperboard printed with the numbers, and a light source is arranged on the surface of the CCD camera.
When printing identification, if the printed paper board with the number is marked as N, the next printed paper board takes the printing position of the N paper board as a reference, and the same position of the next paper board is adjusted and printed according to the printing position of the last paper board, the mark is N+1, and the printing operation in a complete printing period is as follows: n-n+1-n+1+1-n+1+1+1.
After finishing one printing cycle, the system automatically calculates the error between the target paper board and the execution paper board, and selects the smallest error with the target paper board as the target color printing execution, wherein in one cycle, the error between N and N+1 is 50 mu m, the error between N+1 and N+1+1 is 80 mu m, the error between N+1 and N+1+1 is 60 mu m, the system takes the error of 50 mu m as a printing reference, and the like.
The primary printing period is a period of printing colors on a target paper board and a paper board, wherein 12 paper boards need to be printed in a printing system, and the 12 paper boards are printed to form a complete printing period.
When the number is identified, the system firstly identifies the peripheral number, and if the peripheral number is identified to have errors, the central number is used as a reference.
The specific application scene of the embodiment is that before printing, a plurality of paperboards are numbered on specific color blocks on a printing plate in a printing system, specifically, peripheral numbers are arranged at the peripheral edges of the color blocks, the central part of each color block is a central number, and the peripheral numbers and the central numbers can be shot and identified by a CCD camera with a light source;
one of the paperboards is firstly subjected to color printing treatment, the surface of the paperboard is provided with numbered color printing, the paperboard is used as a target paperboard N, when the next paperboard is subjected to color printing, a CCD camera on the target paperboard N firstly shoots and identifies the number information of the target paperboard N, then the color printing position and the size of the target paperboard N are identified, identification data are transmitted to a printing system, the system controls the position of a printing plate through an actuating mechanism, the next paperboard is subjected to color printing treatment, the color printing treatment is marked as N+1, the CCD camera on the paperboard N+1 shoots and collects the number information of the paperboard N+1, and so on, one period of color printing is completed, and then a plurality of paperboards are subjected to copy and paste of the previous color printing paperboard in the color printing process, so that the multi-positioning printing operation of a plurality of paperboards is realized.
Examples
The multi-positioning printing method for the paperboard color printing specifically comprises the following steps:
firstly, before printing, numbering a specific color block on a printing plate of a printing machine, wherein the numbering specifically comprises a central numbering and a peripheral numbering, the peripheral numbering has quadrilateral, rectangular and special-shaped structures, different printing plates are specifically selected according to color printing conditions, and the central numbering is positioned at the very center of the peripheral numbering;
in the printing system, firstly, an executing mechanism in the system drives a printing plate to carry out numbering printing treatment on the surface of one of the paperboards, at the moment, the surface of one of the paperboards is marked with a peripheral number and a central number, the peripheral number and the central number are used as the standard of multi-positioning printing, the paperboards printed with the numbers are used as target printing paperboards, and the paperboards which are not printed are used as executing paperboards;
collecting the paperboards printed with the central numbers and the peripheral numbers through a camera, inputting the central numbers and the peripheral numbers into a printing system for identification, automatically calculating the printing position of the surface of each paperboard according to the conveying position and the size of each paperboard by the system, and carrying out printing treatment on the paperboard by combining the target paperboard;
and step four, when the paperboard printed with the color printing is in the process of printing and conveying, the camera collects and transmits the number information to the printing system, and the execution structure adjusts the position of the printing plate, so that the position of the color printing printed on the next paperboard is at the same position of the last paperboard when the next paperboard is printed.
Specifically, the central number and the peripheral number are the same in identification mode, a CCD camera is used for collecting data of the target paperboard printed with the numbers, and a light source is arranged on the surface of the CCD camera.
When printing identification, if the printed paper board with the number is marked as N, the next printed paper board takes the printing position of the N paper board as a reference, and the same position of the next paper board is adjusted and printed according to the printing position of the last paper board, the mark is N+1, and the printing operation in a complete printing period is as follows: n-n+1-n+1+1-n+1+1+1.
After finishing one printing cycle, the system automatically calculates the error between the target paper board and the execution paper board, and selects the smallest error with the target paper board as the target color printing execution, wherein in one cycle, the error between N and N+1 is 50 mu m, the error between N+1 and N+1+1 is 80 mu m, the error between N+1 and N+1+1 is 60 mu m, the system takes the error of 50 mu m as a printing reference, and the like.
The primary printing period is a period of printing colors on a target paper board and a paper board, wherein 12 paper boards need to be printed in a printing system, and the 12 paper boards are printed to form a complete printing period.
When the number is identified, the system firstly identifies the peripheral number, and if the peripheral number is identified to have errors, the central number is used as a reference.
In the application scenario of this embodiment, in the process of performing a cardboard color printing of one cycle, if the error between the target cardboard N and the execution cardboard n+1 is 50 μm, the error between n+1 and n+1+1 is 80 μm, and the error between n+1+1 and n+1+1+1 is 60 μm, the system uses the error of 50 μm as the printing standard, and so on, and further adjusts according to the color printing error between each adjacent cardboard after printing, so as to avoid the phenomenon that the color printing images overlap or double images occur due to overlarge error when the last cardboard is printed.
The foregoing is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (8)
1. A multiple positioning printing method for paperboard color printing is characterized in that: the method specifically comprises the following steps:
firstly, before printing, numbering a specific color block on a printing plate of a printing machine, wherein the numbering specifically comprises a center number and a peripheral number, different printing plates are specifically selected according to color printing conditions, and the center number is positioned at the very center position of the peripheral number;
in the printing system, firstly, an executing mechanism in the system drives a printing plate to carry out numbering printing treatment on the surface of one of the paperboards, at the moment, the surface of one of the paperboards is marked with a peripheral number and a central number, the peripheral number and the central number are used as the standard of multi-positioning printing, the paperboards printed with the numbers are used as target printing paperboards, and the paperboards which are not printed are used as executing paperboards; when printing identification, if the printed paper board with the number is marked as N, the next printed paper board takes the printing position of the N paper board as a reference, and the same position of the next paper board is adjusted and printed according to the printing position of the last paper board, the mark is N+1, and the printing operation in a complete printing period is as follows: n-n+1-n+1+1-n+1+1+1.
Collecting the paperboards printed with the central numbers and the peripheral numbers through a camera, inputting the central numbers and the peripheral numbers into a printing system for identification, automatically calculating the printing position of the surface of each paperboard according to the conveying position and the size of each paperboard by the system, and carrying out printing treatment on the paperboard by combining the target paperboard;
and step four, when the paperboard printed with the color printing is in the process of printing and conveying, the camera collects and transmits the number information to the printing system, and the execution structure adjusts the position of the printing plate, so that the position of the color printing printed on the next paperboard is at the same position of the last paperboard when the next paperboard is printed.
2. The multiple positioning printing method of paperboard color printing according to claim 1, wherein: the central number and the peripheral number are the same in identification mode, a CCD camera is used for collecting data of the target paperboard printed with the numbers, and a light source is arranged on the surface of the CCD camera.
3. The multiple positioning printing method of paperboard color printing according to claim 1, wherein: after completing one printing cycle, the system automatically calculates the error between the target paper board and the execution paper board, and selects the smallest error with the target paper board as the target color printing execution.
4. A multiple positioning printing method for color printing on paperboard according to claim 3, wherein: in one period, the error between N and N+1 is 50 μm, the error between N+1 and N+1+1 is 80 μm, the error between N+1 and N+1+1+1 is 60 μm, the system takes the error of 50 μm as a printing standard, and so on.
5. A multiple positioning printing method for color printing on paperboard according to claim 3, wherein: the primary printing cycle is the cycle of the target board and executing the printing on the board.
6. The multiple positioning printing method of paperboard color printing according to claim 1, wherein: in the printing system, 12 paperboards need to be printed, and then the 12 paperboards are printed for a complete printing cycle.
7. The multiple positioning printing method of paperboard color printing according to claim 1, wherein: when the number is identified, the system firstly identifies the peripheral number, and if the peripheral number is identified to have errors, the central number is used as a reference.
8. The multiple positioning printing method of paperboard color printing according to claim 1, wherein: the shape of the peripheral number is a rectangle structure.
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| CN202310671563.2A CN116653461B (en) | 2023-06-07 | 2023-06-07 | Multiple positioning printing method for paperboard color printing |
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