CN110732840A - Plate roller manufacturing process and laser plate roller - Google Patents
Plate roller manufacturing process and laser plate roller Download PDFInfo
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- CN110732840A CN110732840A CN201910992696.3A CN201910992696A CN110732840A CN 110732840 A CN110732840 A CN 110732840A CN 201910992696 A CN201910992696 A CN 201910992696A CN 110732840 A CN110732840 A CN 110732840A
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- laser
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- plate roller
- mirror surface
- roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/10—Forme cylinders
- B41F13/11—Gravure cylinders
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a plate roller manufacturing process and a laser printing plate roller, wherein the plate roller manufacturing process comprises the following steps of S10 turning a stainless steel pipe to form a roller surface, S20 grinding and polishing the roller surface to form a mirror surface, and S30 carving laser patterns on the mirror surface, wherein the mirror surface is smooth and flat, high-precision fine carving can be realized through laser carving, the mirror surface can have gorgeous color effects through carving on the mirror surface by adopting a laser carving technology, the laser printing plate roller can be manufactured without adopting an electroplating mode, the manufacturing process is simplified, the manufacturing efficiency is higher, the manufacturing cost is reduced, the laser patterns can be printed on packaging materials, special paper and other materials by utilizing the printing plate roller, the printing effect is obvious, the printing quality is stable, and the printing plate roller is durable and reliable.
Description
Technical Field
The invention relates to the technical field of plate roller printing, in particular to a manufacturing process of plate rollers and a laser plate roller manufactured by the same.
Background
Laser printing belongs to of gravure technique, and is applied to the printing of high-end laser packing widely, and this kind of printing technology has that the impression of coating is thin, the pattern is meticulous, printing plate press resistance is high, the printed matter stable quality, printing speed advantage such as fast, and the printed product has gorgeous laser effect, and is liked by the consumer.
The existing laser printing plate roller is usually manufactured by adopting an electroplating process, the process comprises the process steps of copper plating, rubber coating, laser engraving, corrosion, degumming, chromium plating and the like, the process is complex, the manufacturing period is longer, the defects of low efficiency and high cost exist, and the electroplating process has high energy consumption and is not beneficial to energy conservation and environmental protection.
Disclosure of Invention
The invention aims to at least solve technical problems in the prior art, provides a plate roller manufacturing process, can realize the manufacturing of a laser printing plate roller without electroplating, effectively improves the manufacturing efficiency and reduces the cost.
The invention also provides laser printing plate rollers manufactured by the plate roller manufacturing process.
The type plate roller manufacturing process disclosed by the embodiment of the aspect of the invention comprises the following steps of:
step S10: turning the stainless steel pipe to form a roll surface;
step S20: grinding and polishing the roller surface to form a mirror surface;
step S30: laser patterns are carved on the mirror surface through laser.
The manufacturing process of the plate roller provided by the embodiment of the invention at least has the following beneficial effects: the surface of the stainless steel pipe is turned to form a roller surface, then the roller surface is ground and polished to form a mirror surface, the mirror surface is smooth and flat, high-precision fine carving can be achieved through laser carving, the mirror surface is carved through a laser carving technology, the mirror surface has gorgeous color effect, laser patterns are formed, a laser printing roller can be manufactured without an electroplating mode, the manufacturing process is simplified, manufacturing efficiency is high, and manufacturing cost is reduced.
According to embodiments of the present invention, in step S20, a diamond grinding wheel is used for grinding.
According to embodiments of the invention, in step S20, the polishing process includes the following steps:
step S21: polishing by using a diamond grindstone;
step S22: polishing by using a diamond abrasive belt;
step S23: and finally, polishing by adopting a pure cotton polishing wheel and rare earth polishing powder until the surface of the roller achieves the mirror surface effect.
According to embodiments of the present invention, in step S22, the roughness of the diamond abrasive belt is 30-0.1um, and the roller surface is polished for multiple times by using diamond abrasive belts with different roughness.
According to embodiments of the present invention, the polishing process is performed for no less than 10 passes.
According to examples of the present invention, in step S10, the surface of the stainless steel tube is turned by a diamond tool.
According to embodiments of the present invention, in step S30, the ultrafast laser generates a spot and acts on the mirror surface to deform the micro-folds of the mirror surface to form the laser pattern.
According to the laser printing plate rollers, the plate roller is a stainless steel tube, the surface of the plate roller is a mirror surface formed by polishing, and the mirror surface is engraved with a laser pattern.
According to embodiments of the present invention, the stainless steel tube contains less than or equal to 0.08% of carbon, less than or equal to 1.0% of silicon, less than or equal to 2.0% of manganese, less than or equal to 0.03% of sulfur, less than or equal to 0.035% of phosphorus, 16.0% -18.5% of chromium, 10.0% -14.0% of nickel, 2.0% -3.0% of molybdenum, and the balance of iron.
According to examples of the present invention, the plate roll had a diameter of 0.3m and a length of 3 m.
The laser printing plate roller provided by the embodiment of the invention at least has the following beneficial effects: the surface of the stainless steel pipe is polished to form a mirror surface through a corresponding process, the mirror surface is carved to have gorgeous color effect, a laser pattern is formed, the laser printing plate roller can be used for printing the laser pattern on materials such as packaging materials, special paper and the like, the printing effect is obvious, the printing quality is stable, and the stainless steel pipe is durable and reliable.
Drawings
The invention is further illustrated in connection with the figures and examples;
FIG. 1 is a flow chart of a plate roll manufacturing process according to an embodiment of the present invention;
FIG. 2 is a flow chart of a polishing process in an embodiment of the invention;
FIG. 3 is a flow chart of the embodiment of the present invention in which a belt polishing is used;
fig. 4 is a schematic structural diagram of a laser printing plate roller according to an embodiment of the present invention;
FIG. 5 is a schematic side view of a laser engraving machine according to an embodiment of the present invention;
fig. 6 is a schematic diagram of the working principle of the laser device according to the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
, the second is only used for distinguishing technical features, but not for indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless otherwise specifically limited, terms such as set, mounted, connected and the like should be understood as meaning, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the details of the technical solutions.
Referring to fig. 1, the plate roller manufacturing process according to the embodiment of the present invention is a process for manufacturing a plate roller 100 for printing a laser pattern by using a stainless steel pipe as a processing object, and includes the following specific steps:
step S10: turning the stainless steel pipe, wherein in the turning process, the grinding and polishing equipment is used for processing the axle and the roll surface of the steel pipe, so that the surface of the steel pipe forms a roll surface;
step S20: and then grinding the roll surface, and polishing the roll surface after the grinding, wherein the grinding belongs to fine processing, the polishing belongs to ultra-fine processing, and the roll surface is more convenient to be processed by a polishing process after the grinding, and the polishing process adopts a plurality of different polishing procedures, so that the polishing purpose enables the roll surface to achieve a mirror surface effect.
Step S30: after the mirror surface 110 is manufactured, the laser carving machine 200 is used for carving the laser pattern 120 on the mirror surface 110, the laser carving machine 200 adopts the high-precision laser 310 to generate hyperfine light spots, and the laser 310 is controlled by a computer to move on the roller surface, so that the hyperfine light spots act on the mirror surface 110, the mirror surface 110 deforms, the gorgeous color effect is achieved, and the laser pattern 120 is formed.
Referring to fig. 2, in the embodiment, the steps of the roll making process include:
step S10: turning the stainless steel pipe to form a roll surface on the surface of the steel pipe;
step S20: grinding the roller surface by using a grinding wheel;
step S21: carrying out primary polishing by using a diamond grindstone;
step S22: carrying out secondary polishing by using a diamond abrasive belt;
step S23: and finally, polishing by adopting a pure cotton polishing wheel and rare earth polishing powder until the surface of the roller achieves the mirror surface effect. The rare earth polishing powder has the advantages of high polishing speed, high smoothness and long service life, does not pollute the environment, is easy to remove from adhered objects and the like compared with the traditional polishing powder, and the polished mirror surface has better effect. In the embodiment, the main component of the rare earth polishing powder is CeO2 (cerium oxide), the rare earth polishing powder is suitable for high-precision polishing, and the roller surface is processed through multiple polishing procedures, so that the roller surface is flat and smooth, and a mirror surface effect is presented.
In the embodiment, the adopted diamond grindstone has the characteristics of good processing flatness, high grinding efficiency and the like, and the diamond abrasive belt is a coating abrasive tool for adhering artificial diamond abrasive grains to a flexible and bendable base material by using a binder and is suitable for fine grinding and polishing. Aiming at the material characteristics of the stainless steel pipe, a special diamond grindstone and a diamond abrasive belt are adopted on the grinding and polishing equipment to polish the stainless steel pipe.
Step S30: after the mirror surface 110 is manufactured, the laser engraving machine 200 is used to engrave the laser pattern 120 on the mirror surface 110.
In , in step S20, a diamond grinding wheel is used for grinding, the diamond grinding wheel is a circular consolidated grinding tool with a through hole in the center, which is made of diamond abrasive as a raw material and metal powder, resin powder, ceramic and electroplated metal as binding agents, the diamond has high abrasion resistance, the abrasion of the grinding wheel is small, the service life is longer, and the change of the size, shape and appearance of diamond abrasive particles is small in grinding, so that the diamond grinding wheel is more suitable for high-precision processing and has high production efficiency.
In step S22, the roughness of the diamond abrasive belt is 30-0.1um, and the diamond abrasive belts with different roughness are used to polish the roller surface for multiple times, wherein the polishing process is not less than 10 times, so that the polishing effect is better, and the super mirror effect is realized. Referring to fig. 3, the embodiment specifically includes the steps of:
step S221: selecting diamond abrasive belts with the roughness of 30um, 10um and 1um for polishing in sequence;
step S222: and selecting a diamond abrasive belt with the roughness less than 1um for polishing for multiple times.
In step S10, the surface of the stainless steel pipe is turned with a diamond tool.
In step S30, the ultrafast laser 310 generates a spot and acts on the mirror surface 110 to deform the microscopic wrinkles of the mirror surface 110 to form the laser pattern 120.
Referring to fig. 4, according to the laser printing plate roller 100 of the embodiment of the present invention, the plate roller 100 is a stainless steel pipe, the surface of the plate roller 100 is a mirror surface 110 formed by polishing, and the mirror surface 110 is engraved with a laser pattern 120.
In the embodiment, the stainless steel tube has the components of carbon less than or equal to 0.08%, silicon less than or equal to 1.0%, manganese less than or equal to 2.0%, sulfur less than or equal to 0.03%, phosphorus less than or equal to 0.035%, chromium 16.0% -18.5%, nickel 10.0% -14.0%, molybdenum 2.0% -3.0%, and the balance of iron, the diameter of the printing roller 100 is 0.3m, and the length of the printing roller 100 is 3 m.
Referring to fig. 5, the embodiment further provides types of laser engravers 200 suitable for the plate roller manufacturing process, specifically, the laser engraver 200 includes a laser device 300, a rotation driving device 210 and a movement driving device 220, the rotation driving device 210 is used for driving the plate roller 100 to be engraved to rotate, and the movement driving device 220 is used for driving the laser device 300 to move axially along the plate roller 100, wherein the rotation driving device 210 includes a front end rotating head 211, a tail end rotating head 212 and a rotation driving motor, the front end rotating head 211 and the tail end rotating head 212 are symmetrically arranged on the machine tool 230 and are used for cooperatively clamping two ends of the plate roller 100 to be engraved, the movement driving device 220 includes a moving table 221 and a movement driving motor, the moving table 221 is arranged on the side of the position of the plate roller 100 to be engraved and can move back and forth between the front end rotating head 211 and the tail end rotating head 212, and the laser device 300 is mounted on the moving table.
In order to make the moving position of the moving stage 221 more accurate and stable, a guide rail matched with the moving stage 221 is provided on the machine tool 230. The moving driving motor drives the moving platform 221 to move along the guide rail, so that the moving platform 221 drives the laser device 300 to move along the axial direction of the plate roller 100, and the laser device 300 emits a laser beam to engrave the plate roller 100 while moving, which is beneficial to improving the engraving accuracy.
During operation, the plate roller 100 to be engraved is fixed and clamped between the front end rotating head 211 and the tail end rotating head 212, and the front end rotating head 211 and the tail end rotating head 212 are driven to rotate by the rotating driving motor, so that the plate roller 100 to be engraved is driven to rotate. At this time, the laser device 300 is started, the laser device 300 generates a light spot, and the light spot is projected onto the surface of the plate roller 100 to be engraved. Laser beams generated by the laser device 300 are expanded and focused to form light spots, the light spots are in Gaussian distribution, the intermediate energy is high, the edge energy is low, the light spots formed on the surface of the plate roller 100 can reach the micron level, and therefore ultra-fine patterns can be carved. And the microscopic wrinkle deformation is generated on the surface of the spot ablation material through the control of the engraving parameters, such as power, action time and other factors, thereby showing gorgeous color effect, forming the laser pattern 120 and being used for high-precision laser printing.
Referring to fig. 5, the laser apparatus 300 includes a laser 310, an absorber 320, and an optical assembly, where the optical assembly includes a collimating lens 330, a focusing lens 350, and a beam expander set 340, the collimating lens 330 is located at an exit port of the laser 310, an entrance port of the absorber 320 corresponds to an exit port of the collimating lens 330, and the beam expander set 340 and the focusing lens 350 are arranged at an exit port of the absorber 320.
The collimating mirror 330 is a transmissive collimating mirror, the collimator is fixed on the exit port of the laser 310, the laser beam generated by the laser 310 is collimated by the collimating mirror 330 and then emitted, the collimation property of the laser beam can be ensured, and the collimating aperture emitted by the collimating mirror 330 is equivalent to the aperture of the entrance port of the absorber 320, so that the collimated laser beam can enter the absorber 320. Of course, the collimating aperture of the collimating mirror 330 may be smaller than the entrance aperture of the absorber 320. Since switching of the laser beam cannot be controlled by means of the switching laser 310, an absorber 320 is added to the optical path, and the absorber 320 functions to controllably block the emission of the laser beam. In a normal working state, the laser beam directly passes through the absorber 320 without generating a blocking effect; when the laser beam does not need to be emitted, the absorber 320 blocks the emission of the laser beam, that is, the laser beam reaches the absorber 320 and is cut off, so that the laser device 300 cannot generate a light spot, and the absorber 320 works stably and reliably.
The beam expander set 340 and the focusing lens 350 are sequentially arranged along an optical path and located on the side of an exit port of the absorber 320, after the laser beam is expanded by the beam expander set 340, the divergence angle of the laser beam is reduced, and the laser beam is focused by the focusing lens 350, so that the laser beam can be focused to be smaller to form a fine light spot, the number of the beam expander lenses and the beam expansion ratio in the beam expander set 340 are set according to actual requirements, the beam expander can be matched with the focusing lens 350 to meet the requirement of generating the light spot with a small enough size, the theoretical light spot can be 2-3 microns, and the laser pattern carving device is suitable for carving fine.
In , the beam expander set 340 includes a th beam expander 341 and a second beam expander 342, the laser beam emitted from the absorber 320 sequentially passes through a th beam expander 341 and the second beam expander 342 to perform two-stage beam expansion, wherein the th beam expander 341 employs an electric adjustable beam expander, also called an electric variable-magnification beam expander, whose beam expansion magnification is 2-8 times, the th beam expander 341 expands the beam diameter and adjusts the divergence through electric control, and integrated control is employed, the electric adjustable beam expander of this embodiment is continuously adjustable in beam expansion magnification, for example, the diameter of the output beam can be set to 4 times that of the input beam, the laser beam becomes a beam with the beam diameter expanded by 4 times after passing through the th beam expander 341, the beam expander of which beam expansion magnification is 2.5 times is employed for the second beam expander 342, with the case of setting 4 times of beam expansion by the th beam expander 341, the beam diameter of the laser beam after passing through the th beam expander 341 and the second beam expander 342 is 4.5 times that of the beam expander, the beam expander is reduced to 10 times, the beam expander is also reduced in the beam expander surface energy, and the laser beam is reduced to obtain a high spot focusing power, which is smaller than a high spot focusing power, and a high spot focusing power, thus the high spot focusing power is reduced by a high focusing power, and a high focusing power which is smaller than a high focusing power, and a high.
It is understood that the beam expander 341 and the second beam expander 342 are not limited to the above embodiments, and the absorber 320 may be disposed between the beam expander 341 and the second beam expander 342, and certainly not limited to two beam expanders, in addition, a diaphragm 360 may be disposed between the beam expander 340 and the focusing mirror 350, and the diaphragm 360 may further define the beam diameter of the laser beam, so as to generate a laser spot with a stable size, and the diaphragm 360 adopts a conventional optical shape diaphragm 360, and will not be described herein again.
In , the absorber 320 includes an absorption light box 322 and an optical path deflector 321, the absorption light box 322 is a light trap for absorbing the laser beam, and the optical path deflector 321 can change the direction of the laser beam to make the laser beam strike the absorption light box 322, so as to block the laser beam.
Specifically, the optical path deflector 321 mechanically rotates the reflecting mirror 323 to change the incident angle of the laser beam, so as to achieve the purpose of deflecting the optical path, the laser beam is incident into the absorption light box 322 after being deflected, and the energy of the laser beam is absorbed by the absorption light box 322, so that the laser beam cannot be emitted out of the absorber 320. Among them, the reflecting mirror 323 is driven by a high-speed motor, and the response is rapid. In normal operation, the laser beam passes through the optical path deflector 321 without deflection, i.e., the laser beam is directly emitted without passing through the absorption light box 322. When the laser engraving device is applied to laser engraving, the laser 310 continuously emits laser beams, and the light path deflector 321 controls light path deflection to block the emission of the laser beams at positions where engraving is not needed, so that accurate engraving patterns are realized. Other structures and operations of the absorber 320 according to the embodiment are known to those of ordinary skill in the art and will not be described herein.
The laser 310 adopted by the embodiment is a 50W picosecond pulse laser, the laser pulse width of the laser 310 is less than 10ps, the laser is suitable for a micro-fine processing technology, a laser beam is emitted by the 50W picosecond pulse laser 310, and the laser beam is collimated, expanded and focused to obtain an ultrafine spot. Because the ultra-narrow pulse width acts on the surface of the material for a short time, the high peak energy and the ultra-fine light spots are combined, and the high-precision fine carving can be realized.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1, kinds of version roller preparation technology, characterized by including the following steps:
step S10: turning the stainless steel pipe to form a roll surface;
step S20: grinding and polishing the roller surface to form a mirror surface;
step S30: laser patterns are carved on the mirror surface through laser.
2. The printing roll manufacturing process according to claim 1, characterized in that: in step S20, a diamond grinding wheel is used to perform grinding.
3. The printing roll manufacturing process according to claim 1 or 2, characterized in that: in the step S20, the polishing process includes the following steps:
step S21: polishing by using a diamond grindstone;
step S22: polishing by using a diamond abrasive belt;
step S23: and finally, polishing by adopting a pure cotton polishing wheel and rare earth polishing powder until the surface of the roller achieves the mirror surface effect.
4. The printing roll manufacturing process according to claim 3, characterized in that: in the step S22, the roughness range of the diamond abrasive belt is 30-0.1um, and the diamond abrasive belts with different roughness are used for polishing the roller surface for multiple times.
5. The printing roll manufacturing process according to claim 4, characterized in that: the polishing process has no less than 10 steps.
6. The printing roll manufacturing process according to claim 1, characterized in that: in step S10, the surface of the stainless steel pipe is turned by a diamond tool.
7. The printing roll manufacturing process according to claim 1, characterized in that: in step S30, the ultrafast laser generates a spot and acts on the mirror surface to deform the mirror surface into micro-folds and form a laser pattern.
8, laser printing plate rollers, which is characterized in that the plate roller is a stainless steel tube, the surface of the plate roller is a mirror surface formed by polishing, and laser patterns are engraved on the mirror surface.
9. The laser printing plate roller according to claim 8, characterized in that: the stainless steel pipe comprises less than or equal to 0.08 percent of carbon, less than or equal to 1.0 percent of silicon, less than or equal to 2.0 percent of manganese, less than or equal to 0.03 percent of sulfur, less than or equal to 0.035 percent of phosphorus, 16.0 to 18.5 percent of chromium, 10.0 to 14.0 percent of nickel, 2.0 to 3.0 percent of molybdenum and the balance of iron.
10. The laser printing plate roller of claim 9, wherein: the diameter of the plate roller is 0.3m, and the length of the plate roller is 3 m.
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| CN201910992696.3A CN110732840A (en) | 2019-10-18 | 2019-10-18 | Plate roller manufacturing process and laser plate roller |
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| CN201910992696.3A CN110732840A (en) | 2019-10-18 | 2019-10-18 | Plate roller manufacturing process and laser plate roller |
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| CN111673382A (en) * | 2020-06-01 | 2020-09-18 | 肇庆宏旺金属实业有限公司 | Preparation method of ultra-8K stainless steel coil |
| CN112172108A (en) * | 2020-08-26 | 2021-01-05 | 江苏大亚新型包装材料有限公司 | Method for manufacturing seamless laser film |
| CN112719617A (en) * | 2020-12-24 | 2021-04-30 | 鹤山市精工制版有限公司 | Laser engraving laser holographic pattern production process |
| CN112894013A (en) * | 2020-12-31 | 2021-06-04 | 佛山市三简包装有限公司 | Processing method of pre-compensation type mould pressing plate roller |
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