CN110525015B - Sleeve engraving method combining printing plate-making laser engraving and electronic engraving - Google Patents
Sleeve engraving method combining printing plate-making laser engraving and electronic engraving Download PDFInfo
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- CN110525015B CN110525015B CN201910701405.0A CN201910701405A CN110525015B CN 110525015 B CN110525015 B CN 110525015B CN 201910701405 A CN201910701405 A CN 201910701405A CN 110525015 B CN110525015 B CN 110525015B
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- carving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/02—Engraving; Heads therefor
- B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
- B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/14—Forme preparation for stencil-printing or silk-screen printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/14—Forme preparation for stencil-printing or silk-screen printing
- B41C1/145—Forme preparation for stencil-printing or silk-screen printing by perforation using an energetic radiation beam, e.g. a laser
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
The invention discloses a sleeve carving method combining laser carving and electronic carving for printing plate making, which is characterized in that a laser carving technology is carried out on a printing plate roller page, after a laser sleeve carving marking pattern is carved in a printing plate roller trial carving area, the laser sleeve carving marking pattern and the starting point of electronic carving trial carving are butted under a high-power microscope, the electronic carving trial carving is started, trial carving deviation is adjusted, and electronic carving is carried out on the printing plate roller page to form a sleeve carving pattern. The method solves the problems that the combination of the laser engraving technology and the electronic engraving technology is difficult, the sleeve engraving precision is unsatisfactory, the sleeve engraving time is long, the printing quality of the combined engraving plate roller is reduced after the sleeve engraving and the like due to the difference of the shapes of the lattice points, the sleeve engraving precision of the printing plate roller is improved, a sleeve engraving worker of the printing plate making process can complete the sleeve engraving and plate making process quickly while ensuring the sleeve engraving precision of the printing plate roller according to the method provided by the invention, the working efficiency of the sleeve engraving and plate making process is improved, and the quality risk of the sleeve engraving and plate making process is reduced.
Description
Technical Field
The invention belongs to the technical field of engraving plate making, and particularly relates to a sleeve engraving method combining laser engraving and electronic engraving for printing plate making.
Background
The electronic engraving plate-making is developed in China only in the early 90 th of the last century, is widely applied to the printing industry, and has the advantages of clear image hierarchy, high fineness and easy realization of seamless connection plate-making.
The laser engraving is mainly based on the numerical control technology, the laser is used as a processing medium, the electromechanical transmission is used as power, and the processing material instantaneously changes and gasifies the surface of the material in a thermal way under the action of laser beams, so that the laser engraving achieves the purpose of processing. Along with the rapid development of photoelectronic technology, the application range of laser engraving technology is more and more extensive, and because the laser engraving technology is non-contact processing, a processing object is not influenced by the hardness of materials, the surface of a processed object can be better protected from deformation, the processing precision is high, and the processing speed is high.
With the market demand and ever-changing product characteristics, a single engraving technology can not meet the requirements of customers, and one printing roller can be used for enabling printed product lines to be clearer and patterns to be more gorgeous only by adopting various engraving technologies. Most typically, the electronic engraving technology and the laser engraving technology are combined to manufacture the plate, but the two engraving technologies are combined, because the shapes of the screen dots are different, the required engraving precision is higher, the time spent by the engraving is longer, the engraving difficulty is easily caused, the printing quality of the combined engraving plate roller after the engraving is reduced, even the engraving is lost, the production efficiency of the printing plate is reduced, and the cost of the printing process is increased.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present invention provides a method for sleeve engraving combining laser engraving and electronic engraving for printing plate making.
The purpose of the invention is realized by the following technical scheme:
the invention provides a sleeve carving method combining printing plate-making laser carving and electronic carving, which comprises the following steps:
s1, after the layout of the printing plate roller is engraved by laser, arranging a laser sleeve engraving marking pattern in an engraving trial area at the end part of the printing plate roller, wherein the laser sleeve engraving marking pattern is two vertically crossed line segments;
s2, magnifying the dots of the laser sleeve carving mark pattern through a high-power microscope, and taking the intersection point of the laser sleeve carving mark pattern as the starting point of the electronic carving trial carving;
s3, after the intersection point of the laser sleeve carving marking pattern and the starting point of electronic carving are butted, performing trial carving of electronic carving in a trial carving area of the printing plate roller to form an electronic trial carving block pattern;
s4, detecting a sleeve carving deviation value between the laser sleeve carving mark pattern and the electronic trial carving block pattern, when the sleeve carving deviation value is within a preset interval, turning to the next step, and when the sleeve carving deviation value is larger than the preset interval, adjusting the initial coordinate of the electronic carving trial carving to enable the sleeve carving deviation value to be within the preset interval;
and S5, electronically engraving the plate surface of the printing plate roller to form the sleeve engraving pattern.
As a further improvement, the preset range of the engraving deviation value of the laser engraving mark pattern and the electronic trial engraving block pattern is 5-15 nanometers.
As a further improvement, in step S2, the intersection points of the laser sleeve-engraved marking pattern are the transverse starting dots and the longitudinal starting dots of the laser sleeve-engraved marking pattern.
As a further improvement, in step S3, the electronically engraved rectangular coordinate system is adjusted such that the horizontal coordinate axis and the vertical coordinate axis of the rectangular coordinate system are respectively parallel to the two line segments of the laser sleeve engraving mark pattern; in the horizontal direction of the rectangular coordinate system, the starting mesh point of the electronic carving trial carving is flush with the starting mesh point of the laser sleeve carving mark pattern, and in the vertical direction of the rectangular coordinate system, the center of the starting mesh point of the electronic carving trial carving is flush with one third of the starting mesh point of the laser sleeve carving mark pattern.
As a further improvement, according to step S2, the high power microscope is a 10 times high definition microscope, and the dots of the laser sleeve carving mark pattern are enlarged to nanometer units.
As a further improvement, in step S1, at least two laser sleeve engraving mark patterns are provided in the printing plate roller end trial engraving area.
The invention provides a sleeve carving method combining printing plate-making laser carving and electronic carving, which comprises the following steps: s1, after the layout of the printing plate roller is engraved by laser, a laser sleeve engraving marking pattern is arranged in an engraving trial area at the end part of the printing plate roller, and the laser sleeve engraving marking pattern is two vertically crossed line segments; s2, magnifying the dots of the laser sleeve carving mark pattern through a high-power microscope, and taking the intersection of the laser sleeve carving mark pattern as the starting point of the electronic carving trial carving; s3, after the intersection point of the laser sleeve carving marking pattern and the starting point of the electronic carving are butted, the electronic carving trial is carried out in the trial carving area of the printing plate roller to form an electronic trial carving block pattern; s4, detecting a sleeve carving deviation value between the laser sleeve carving mark pattern and the electronic trial carving block pattern, when the sleeve carving deviation value is within a preset interval, turning to the next step, and when the sleeve carving deviation value is larger than the preset interval, adjusting the initial coordinate of the electronic carving trial carving to enable the sleeve carving deviation value to be within the preset interval; and S5, electronically engraving the plate surface of the printing plate roller to form a sleeve engraving pattern. The laser engraving method comprises the steps of firstly completing laser engraving on the surface of a printing plate roller, then performing laser engraving in an engraving trial area to form a laser sleeve engraving marking pattern, butting the laser sleeve engraving marking pattern and the starting point of electronic engraving trial engraving under a high-power microscope, then starting electronic engraving trial engraving, adjusting and controlling trial engraving deviation, and finally performing electronic engraving on the surface of the printing plate roller to form the sleeve engraving pattern. The method solves the problems that the laser engraving technology and the electronic engraving technology are different in mesh point shape, so that the combination of the two engraving technologies is difficult to complete, the sleeve engraving precision is difficult to meet the expected requirement, the sleeve engraving time is long, the printing quality of the combined engraving roller after sleeve engraving is reduced and the like, improves the sleeve engraving precision of the printing roller, and enables a sleeve engraving worker in the printing plate making process to complete the sleeve engraving plate making process quickly while ensuring the sleeve engraving precision of the printing roller according to the method provided by the invention, improves the working efficiency of the sleeve engraving plate making process, and reduces the quality risk of the sleeve engraving plate making process.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail by the following specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
The embodiment of the invention provides a sleeve carving method combining printing plate-making laser carving and electronic carving, which comprises the following steps:
s1, carving the plate surface of the printing plate roller by adopting a laser carving process, and carving in a trial carving area at the end part of the printing plate roller to form a laser sleeve carving mark pattern which can be
Bar codes, etc., but not limited thereto, may be selectively used according to the actual application, and the laser sleeve carving mark pattern of the present example is
Two vertically crossing line segments are formed;
and S2, amplifying the dots of the laser sleeve carving mark pattern through a high-power microscope, wherein the dots are basic units of the printed product for representing the layout level and the tone gradation. The high-power microscope of the embodiment is a 10-time high-definition microscope, the 10-time high-definition microscope is suitable for observing, researching and analyzing tiny targets in a specific range on the surface of a printing plate roller, a lens of the 10-time high-definition microscope is aligned to a laser sleeve carving marking pattern, a dot of the laser sleeve carving marking pattern is amplified to a nanometer unit, a cross point of the laser sleeve carving marking pattern is a transverse starting dot and a longitudinal starting dot of the laser sleeve carving marking pattern, and the cross point of the laser sleeve carving marking pattern is used as a starting point of trial carving of electronic carving.
S3, butting the intersection point of the laser sleeve carving marking pattern and the starting point of the electronic carving, and specifically adjusting an electronic carving rectangular coordinate system to enable the horizontal coordinate axis and the vertical coordinate axis of the rectangular coordinate system to be respectively parallel to two line segments of the laser sleeve carving marking pattern; in the horizontal direction of the rectangular coordinate system, the initial mesh point of the electronic carving trial carving is flush with the initial mesh point of the laser sleeve carving mark pattern, in the vertical direction of the rectangular coordinate system, the center of the initial mesh point of the electronic carving trial carving is flush with one third of the initial mesh point of the laser sleeve carving mark pattern, in the embodiment, the electronic carving trial carving is carried out in the trial carving area of the printing plate roller at the moment, and the electronic trial carving block pattern is formed
Continuing to butt the intersection point of the laser sleeve carving marking pattern and the starting point of the electronic carving, wherein in the vertical direction of the rectangular coordinate system, the starting mesh point of the electronic carving trial carving is flush with the starting mesh point of the laser sleeve carving marking pattern, and in the horizontal direction of the rectangular coordinate system, the center of the starting mesh point of the electronic carving trial carving is flush with one third of the starting mesh point of the laser sleeve carving marking pattern
S4, detecting a jacket carving deviation value between the laser jacket carving mark pattern and the electronic test carving block pattern, wherein the preset range of the jacket carving deviation value between the laser jacket carving mark pattern and the electronic test carving block pattern is 5-15 nanometers, the actual jacket carving deviation value of the embodiment is 10 nanometers, the jacket carving deviation value of the embodiment is in the preset range, the next step is carried out, and when the jacket carving deviation value is larger than the preset range, the initial coordinates of the mesh points of the electronic carving test carving are readjusted by referring to the step S3 to enable the jacket carving deviation value between the laser jacket carving mark pattern and the electronic test carving block pattern to be in the preset range;
and S5, electronically engraving the layout of the printing plate roller to form a sleeve engraving pattern, wherein knife entering burrs in the knife entering effect of electronic engraving can reflect whether the position of a scraper is proper, too many or too few burrs cannot be used, and the mesh points in the knife entering effect are uniform and gradually large, because the mesh points determine the color, the level and the image contour of a printing finished product, the original color can be faithfully reproduced only when the mesh points are accurate in size during plate making, and the ideal effect of the printing process is ensured. The more the neutralization value of positive and negative currents in the current control of electronic engraving is close to a '0' bit, the more balanced the positive and negative currents are, the more the neutralization value is controlled within positive and negative 0.5, and the possibility of reducing the mesh point change is favorably reduced. The requirements of electronic engraving on the net shape are that the color plate requires that the engraving needle has no obvious defect and burr, the highlight reduction is complete, and the net shape is uniform and neat.
As a further preferred embodiment, at least two laser sleeve carving mark patterns are arranged in the printing plate roller end trial carving area in step S1, and when the sleeve carving deviation value is larger than the predetermined interval in step S4, the steps S3 and S4 are repeated for another laser sleeve carving mark pattern, so that the sleeve carving deviation value between the laser sleeve carving mark pattern and the electronic trial carving block pattern can be better detected.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore should not be construed as limiting the scope of the present invention.
In conclusion, although the present invention has been described with reference to the preferred embodiments, it should be noted that various changes and modifications can be made by those skilled in the art, and they should be included in the scope of the present invention unless they depart from the scope of the present invention.
Claims (6)
1. A sleeve carving method combining printing plate-making laser carving and electronic carving is characterized by comprising the following steps:
s1, after the layout of the printing plate roller is engraved by laser, a laser sleeve engraving marking pattern is arranged in an engraving trial area at the end part of the printing plate roller, and the laser sleeve engraving marking pattern is two vertically crossed line segments;
s2, magnifying the dots of the laser sleeve carving mark pattern through a high-power microscope, and taking the intersection point of the laser sleeve carving mark pattern as the starting point of the electronic carving trial carving;
s3, after the intersection point of the laser sleeve carving marking pattern and the starting point of electronic carving are butted, performing trial carving of electronic carving in a trial carving area of the printing plate roller to form an electronic trial carving block pattern;
s4, detecting a sleeve carving deviation value between the laser sleeve carving mark pattern and the electronic test carving block pattern, when the sleeve carving deviation value is within a preset interval, turning to the next step, and when the sleeve carving deviation value is larger than the preset interval, adjusting the initial coordinate of the electronic carving test carving to enable the sleeve carving deviation value to be within the preset interval;
and S5, electronically engraving the plate surface of the printing plate roller to form the sleeve engraving pattern.
2. The method of claim 1, wherein the predetermined range of the engraving deviation values of the laser engraving mark pattern and the electronic trial block pattern is 5-15 nm.
3. The overprint method of claim 2, wherein in step S2, the intersection points of the laser overprint mark pattern are the transverse and longitudinal starting dots of the laser overprint mark pattern.
4. The engraving method of claim 3, wherein in step S3, the rectangular coordinate system of the electronic engraving is adjusted such that the horizontal coordinate axis and the vertical coordinate axis of the rectangular coordinate system are respectively parallel to the two line segments of the laser engraving mark pattern; in the horizontal direction of the rectangular coordinate system, the starting mesh point of the electronic carving trial carving is flush with the starting mesh point of the laser sleeve carving mark pattern, and in the vertical direction of the rectangular coordinate system, the center of the starting mesh point of the electronic carving trial carving is flush with one third of the starting mesh point of the laser sleeve carving mark pattern.
5. The overprinting method combining laser engraving and electronic engraving of claim 2, 3 or 4, wherein according to step S2, the high power microscope is a 10-power high-definition microscope, and the dots of the laser overprint mark pattern are magnified to nanometer units.
6. The method of claim 5, wherein at least two laser engraving mark patterns are provided in the trial engraving area at the end of the printing plate roll in step S1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701405.0A CN110525015B (en) | 2019-07-31 | 2019-07-31 | Sleeve engraving method combining printing plate-making laser engraving and electronic engraving |
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| CN201910701405.0A CN110525015B (en) | 2019-07-31 | 2019-07-31 | Sleeve engraving method combining printing plate-making laser engraving and electronic engraving |
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| CN110525015A CN110525015A (en) | 2019-12-03 |
| CN110525015B true CN110525015B (en) | 2021-06-22 |
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| CN111907189A (en) * | 2020-06-19 | 2020-11-10 | 固高科技(深圳)有限公司 | Calibration method, calibration device, electronic carving control system and computer-readable storage medium |
| CN112440609B (en) * | 2020-11-24 | 2022-06-10 | 北京航星机器制造有限公司 | Method and equipment for instantly manufacturing souvenir badge |
| CN116882165B (en) * | 2023-07-07 | 2024-03-29 | 清远南方制版科技有限公司 | Plate roller net point engraving method |
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| EP1968795A1 (en) * | 2005-12-23 | 2008-09-17 | Commonwealth Scientific and Industrial Research Organisation | Manufacture of printing cylinders |
| CN102081184A (en) * | 2010-11-23 | 2011-06-01 | 吴明番 | Light guide body covered with optical membrane |
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| CN110525015A (en) | 2019-12-03 |
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