WO2014139247A1 - 一种集辊涂印刷和丝网印刷为一体的图码钢板的生产方法 - Google Patents

一种集辊涂印刷和丝网印刷为一体的图码钢板的生产方法 Download PDF

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Publication number
WO2014139247A1
WO2014139247A1 PCT/CN2013/078398 CN2013078398W WO2014139247A1 WO 2014139247 A1 WO2014139247 A1 WO 2014139247A1 CN 2013078398 W CN2013078398 W CN 2013078398W WO 2014139247 A1 WO2014139247 A1 WO 2014139247A1
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WO
WIPO (PCT)
Prior art keywords
roller
printing
steel strip
roll
roll coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/078398
Other languages
English (en)
French (fr)
Inventor
唐月平
周建平
伍良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIAONING CHAOSHUO TOMA TECHNOLOGY STEEL PLATE PRINTING Co Ltd
Original Assignee
LIAONING CHAOSHUO TOMA TECHNOLOGY STEEL PLATE PRINTING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LIAONING CHAOSHUO TOMA TECHNOLOGY STEEL PLATE PRINTING Co Ltd filed Critical LIAONING CHAOSHUO TOMA TECHNOLOGY STEEL PLATE PRINTING Co Ltd
Priority to EP13878019.2A priority Critical patent/EP2974864B1/en
Priority to KR1020157028694A priority patent/KR101766572B1/ko
Priority to US14/774,837 priority patent/US9446579B2/en
Publication of WO2014139247A1 publication Critical patent/WO2014139247A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/20—Supports for workpieces with suction-operated elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/24—Supports for workpieces for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/26—Supports for workpieces for articles with flat surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/001—Apparatus or machines for carrying out printing operations combined with other operations with means for coating or laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/063—Using inking rollers
    • 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
    • B41M1/10—Intaglio printing ; Gravure printing
    • 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
    • B41M1/12—Stencil printing; Silk-screen printing
    • 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
    • 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
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/28—Printing on other surfaces than ordinary paper on metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/50—Screen printing machines for particular purposes

Definitions

  • the present invention relates to a method for producing a pattern steel plate integrating roll coating printing and screen printing.
  • Screen printing together with lithographic printing, embossing printing, and gravure printing, is referred to as four printing methods.
  • Screen printing requires screen printing components.
  • the screen printing equipment components are mainly composed of five major elements: screen printing plates, squeegees, inks, printing tables and substrates, in which screen printing plates are provided with graphics and text.
  • screen printing plates are mainly composed of five major elements: screen printing plates, squeegees, inks, printing tables and substrates, in which screen printing plates are provided with graphics and text.
  • Part of the mesh and non-texture part of the mesh the mesh of the image part can pass the ink, the mesh of the non-image part can not penetrate the ink.
  • the basic process of printing by using a screen printing device component is: when printing, pouring ink on one side of the screen printing plate, applying a certain pressure on the ink portion of the screen printing plate with a squeegee, so that the ink is directed toward The other side of the screen printing plate moves, and the ink is squeezed from the mesh portion of the image onto the substrate by the squeegee blade during the movement, and the ink is fixed within a certain range due to the viscous action of the ink, thereby forming and The picture is partially the same as the mesh.
  • a prior art roll coating apparatus assembly for achieving roll coating comprising a feeding device for providing a coating; a suction roller having a circumferential surface connected to the feeding device, the circumferential surface having the said Forming a plurality of depressions in the image area when the paint is filled; a rubber coating roller having a circumferential surface connected to the suction roller for receiving an image area formed by the coating on the coating roller, and transferring the image region onto a steel sheet to form a desired Colorful pattern.
  • the speed is inconsistent with the linear speed of the roll surface of each roller, which often results in the failure to roll-coat the steel sheet according to the predetermined position; in addition, in order to print the multi-color pattern, several sets of roll coating equipment components are often required to cooperate, and the prior art
  • the above-mentioned roll coating apparatus assembly lacks a control system for continuously producing adjacent roller coating equipment components, that is, it is required for the worker to observe whether the first roller coating equipment component has been coated with a color by the human eye, and is determined.
  • the adjacent roller coating equipment assembly is manually activated to make the adjacent roller coating Continuous production cannot be achieved between the spare parts; at the same time, due to the lack of a control system that adjusts the rotational speed of the suction roller and the coating roller, it is impossible to correct the misalignment when the pattern printed by the adjacent roller coating device components is misaligned.
  • the technical problem to be solved by the present invention is to provide a method capable of combining screen printing and roll coating printing, and capable of adjusting the line speed of each roller of the roll coating apparatus assembly and making it and the process.
  • the present invention provides a method for producing a pattern steel plate integrating roll coating printing and screen printing, and at least includes the following process steps:
  • the steel strip is subjected to secondary roll coating transfer by a second roll coating unit, and the secondary roll coating transfer together with the primary roll coating transfer forms a specific shape of the steel strip to be printed.
  • the first roller coating unit is controlled by using a servo control system, and the control process of the servo control system is:
  • the servo control module receives a theoretical roll surface linear velocity signal from each roller of the PLC control module, and drives each roller according to the theoretical roll surface linear velocity signal;
  • the encoder collects an actual roll surface linear velocity of each roller, and outputs an actual roll surface linear velocity signal of each roller to the PLC control module;
  • the PLC control module adjusts the current frequency of the motor driving each roller according to the received actual roller surface linear velocity signal of each roller and the theoretical roller surface linear velocity signal, and further corrects the actual roller surface linear velocity of each roller to When the theoretical roll surface speeds are the same, the roll coating transfer of the first roll coating unit is completed.
  • the PLC control module further inputs distance data between the first roller coating unit and the second roller coating unit, and the PLC control module according to the process
  • the speed and the distance data calculate a specific time for starting the second roll coating unit, and start the second roll coating unit according to the specific time to complete the roll coating transfer of the second roll coating unit.
  • the printed pattern is collected by the password recognition module, and the offset of the color is determined by the computer identification, thereby correcting the process speed of the corresponding roller coating unit.
  • the bottom of the printing table is provided with a leveling device, and before the screen printing of the step D is performed, the surface of the steel strip is leveled before printing by the leveling device.
  • the printing table is made of a ferromagnetic material, and an electromagnetic coil is disposed at a position corresponding to a position where the steel strip is placed at a lower portion of the printing table, and the electromagnetic coil is connected to the energization control device.
  • the energization control device is controlled to energize the electromagnetic coil, thereby magnetizing the printing table, and the magnetized printing table attracts the steel strip to level the steel strip.
  • a plurality of through holes are disposed on the printing table at a position corresponding to the position where the steel strip is placed, and a fan is disposed at a bottom of the printing table, and the fan passes through the fan when the leveling is performed
  • the through hole absorbs air to form a negative pressure in the gap space formed by the steel strip and the printing table, thereby pressing the steel strip against the printing table to achieve leveling of the steel strip.
  • an electrostatic precipitating treatment step performed on the steel strip after the corona treatment step and before the primary roll coating transfer step.
  • the steel coil is unwound and trimmed by an uncoiler, and the unwound steel strip is stitched by a sewing machine.
  • the pre-processing step comprises: degreasing treatment, cleaning treatment, Drying treatment, passivation treatment and drying treatment.
  • the method for producing a multicolor pattern color steel plate provided by the present invention has the following advantages:
  • the invention provides a method for producing a pattern steel plate which integrates roll coating printing and screen printing, and combines screen printing and roll coating printing to obtain a more accurate ground pattern and obtain a thicker one. And a printing layer with strong stereoscopic effect.
  • a servo control system for controlling the rotational speed and starting time of each roller in the roller coating device assembly is added to the roller coating section.
  • PLC The control system calculates the theoretical roller surface linear velocity of each roller in the roller coating unit by collecting the process speed and the rotation speed of each roller in the roller coating unit, and makes the theoretical roller surface linear velocity consistent with the process rotation speed; on the other hand, through servo control
  • the module collects the actual roll surface linear velocity of each roller in the roller coating unit, and inputs the actual roller surface linear velocity signal to the PLC control system, thereby enabling the PLC control system to compare with the actual roll surface linear velocity and the theoretical roll surface linear velocity. And adjust the current frequency until the actual roll surface speed is consistent with the theoretical roll surface speed.
  • the above control method adjusts the actual roll surface linear velocity to be consistent with the theoretical roll surface linear velocity, and the theoretical roll surface linear velocity is consistent with the process speed, thereby ensuring that the actual roll surface linear velocity is consistent with the process rotational speed, and thus is not in the production process. Need to stop the line adjustment, improve production efficiency.
  • the invention provides a method for producing a pattern steel plate integrating roll coating printing and screen printing, and a servo control system is added, and the first roller coating unit and the second are also input into the PLC control system.
  • the distance data between the roller coating units, and the time to start the second roller coating unit can be calculated based on the process speed and the distance data.
  • the invention provides a method for producing a pattern steel plate which integrates roll coating printing and screen printing, and adds a servo control system, wherein the servo control system further comprises a code recognition module, and the code recognition module
  • the servo control system further comprises a code recognition module, and the code recognition module
  • the printed pattern is collected, and the dislocation distance of the color is determined by computer identification, thereby correcting the process speed of the corresponding roller coating unit.
  • the printed pattern is collected by the password recognition module, and the dislocation distance of the color is determined by computer identification, so that the rotation speed of each roller is corrected according to the dislocation distance of the color, so that the dislocation of the color is obtained. Correction, the above process can be cycled to ensure that the printed pattern is complete and realistic.
  • the addition of the code recognition module greatly increases the length of the printed pattern.
  • the invention provides a method for producing a pattern steel plate which integrates roll coating printing and screen printing, and the printing table
  • the bottom portion is provided with a leveling device, and before the screen printing of the step D is performed, the flattening device is used to level the surface of the steel strip before printing, so that the screen can be scraped in the screen printing section.
  • the ink transfer under the action of uniform force reduces the printing difficulty, thereby making it possible to apply screen printing to the production of image steel sheets.
  • Two levels of leveling are specifically provided: Method 1:
  • the printing table is a ferromagnetic material printing table, and a lower portion of the printing table is provided with an electromagnetic coil at a position corresponding to the holding position of the steel strip.
  • the electromagnetic coil is connected to the energization control device.
  • the electromagnetic coil is energized by the energization control device, and the electromagnetic coil generates a magnetic field after being energized, so that the printing table is magnetized,
  • the magnetized printing table functions as an electromagnet, and the steel strip is flatly adsorbed onto the printing table, thereby achieving leveling of the steel strip; and second, the printing table and the steel strip are placed at a position a plurality of through holes are disposed at corresponding positions, and a fan is disposed at a bottom of the printing table, and the fan can absorb air through the through hole, and is leveled by the flattening method, because the printing table a plurality of through holes are disposed thereon, and when the steel strip is not flat, a gap is formed between the printing table and the printing table, and the wind can be blown through the through hole to flow the wind through the through hole The fan, thereby creating a negative pressure zone at the gap between the steel strip and
  • the method for producing a pattern steel plate integrating roll coating printing and screen printing provided by the present invention, further comprising a corona treatment step of the steel strip before the primary roll coating transfer step Corona treatment forms a number of small pits on the surface of the steel strip to improve the surface roughness of the surface of the steel strip, thereby improving the adhesion of the surface of the steel strip to the ink, making the pattern layer less prone to "painting off” and improving Formability of the steel strip.
  • the invention provides a method for producing a pattern steel plate integrating roll coating printing and screen printing, further comprising: after the corona treatment step and before the primary roll coating transfer step The step of electrostatic precipitating treatment performed by the steel strip.
  • the corona-treated steel strip is subjected to electrostatic dust removal treatment to remove the "steel scraps" generated during the corona treatment of the steel strip surface, thereby improving the surface cleanliness.
  • Figure 1 is a flow chart showing a method of producing a multicolor pattern color steel plate of the present invention
  • Figure 2 is a schematic structural view of a roll coating unit of the present invention
  • Figure 3 is a flow chart showing the operation of the servo control system provided by the present invention.
  • the embodiment provides a method for producing a two-color pattern color steel plate, which includes the following steps:
  • the steel strip is subjected to secondary roll coating transfer by a second roll coating unit, and the secondary roll coating transfer together with the primary roll coating transfer forms a specific shape of the steel strip to be printed.
  • the first roller coating unit is controlled by a servo control system, and the control process of the servo control system is as shown in FIG. 3:
  • the theoretical roll surface linear velocity signals of the respective rollers are respectively output to a servo control module having an encoder;
  • the servo control module receives a theoretical roll surface linear velocity signal from each roller of the PLC control module, and drives each roller according to the theoretical roll surface linear velocity signal;
  • the encoder collects the actual roll surface linear velocity of each roller, and outputs the actual roll surface linear velocity signal of each roller to the PLC control module;
  • the PLC control module adjusts the current frequency of the motor driving each roller according to the received actual roller surface linear velocity signal of each roller and the theoretical roller surface linear velocity signal, and further corrects the actual roller surface linear velocity of each roller to When the theoretical roll surface speeds are the same, the roll coating transfer of the first roll coating unit is completed.
  • the PLC control module in order to achieve continuous online operation of the adjacent roller coating unit, in the step S1, the PLC control module further inputs a first roller coating unit and a second roller coating unit.
  • the distance control data the PLC control module calculates the time for starting the second roller coating unit according to the process speed and the distance data, and starts the second roller coating unit according to the startup time to complete the printing of the second roller coating unit.
  • the printed pattern is collected by the password recognition module, and passed.
  • Computer identification system determines color misplacement The distance, thereby correcting the process speed of the corresponding roller coating unit, the specific correction process is: if the color of the rear roller coating in the pattern collected by the password recognition module is relative to the color of the first roller coating and the predetermined roller coating position
  • the misalignment distance for example, 10 mm ahead of the predetermined roll position, indicates that the actual process speed of the roller carrying the steel strip (indicated by VI) is faster than the process speed (indicated by V2) that should be run in unit time.
  • the printed pattern is captured by the digital camera in the password recognition module.
  • the leveling device in order to reduce the difficulty of screen printing, since the flattening device is disposed at the bottom of the printing table, the leveling device can be subjected to cold rolling and/or hot rolling processing and shear forming.
  • the steel strip is leveled, so that in the screen printing section, the squeegee can perform ink transfer under the action of uniform force, which reduces the printing difficulty, and the bottom of the printing table is provided with a leveling device,
  • the flattening device is used to level the surface of the steel strip before printing.
  • the specific leveling manner is as follows: the printing station is made of ferromagnetic material.
  • the electromagnetic coil being connected to an energization control device, and controlling the energization control device when performing the leveling
  • the electromagnetic coil is energized to magnetize the printing station, and the magnetized printing table attracts the steel strip to level the steel strip.
  • the step of performing pre-transfer processing on the steel strip to be printed is further included.
  • the steps of the pre-treatment include: degreasing treatment, degreasing with an alkali solution having a concentration of 1% and a temperature of 50-65 degrees to remove oil stains and dust on the surface of the steel strip, and the ratio of the total alkali to the free base is less than 2.5; Washing treatment, the surface of the stripped steel strip is washed with 50-65 degrees of desalted water to remove residual lye on the surface of the strip.
  • the pH of the rinse water is less than 7.8; drying treatment, using hot air of 75-85 degrees Drying the residual moisture on the surface of the strip after washing, the hot air is heated by the steam heat exchanger; passivation treatment, passivating the surface of the cleaned strip with a treatment liquid having a chromium point of 22-32, In order to increase the adhesion and anti-corrosion performance of the strip and the primer; drying treatment, drying the surface after passivation with an electric heating oven to enhance the passivation effect, the baking temperature of the board surface is 72-85 degrees, at the beginning Bottom
  • the lacquer treatment uses a first roller coating unit to apply a backing and primer to the surface of the steel strip.
  • the color and properties of the primer are determined according to the color of the printing; baking curing treatment and cooling treatment, coating primer and back coating
  • the strip is baked to fully cure the primer and the backing, the curing temperature is 214-232 degrees, and then the baked strip is cooled by water mist and water flow to further stabilize the applied primer and topcoat. performance.
  • the steel strip is post-treated, and the post-treatment includes finishing the lacquer on the surface of the steel strip, in the fine coating After the bright lacquer, it is dried again, After the drying treatment again, the cooling treatment is performed again.
  • the steel strip is taken up by a coiler.
  • the step of intermediate processing is further included after the secondary roll coating transfer after the primary roll coating transfer, and the intermediate processing step is the drying and cooling process, and it is noted that the intermediate process is increased.
  • the time of the intermediate processing step is considered, thereby starting the second roll coating unit. Make corrections.
  • step B and the step C need to be implemented by using a roll coating unit, but for the structure of a specific roll coating unit. No restrictions.
  • the present embodiment provides a method for producing a two-color pattern color steel plate, and the required roll coating transfer unit is two groups, and those skilled in the art can follow the production method disclosed in the embodiment.
  • the adjustment speed in the servo control system, the start time of the second roll coating unit, and the code recognition technology are modified on the basis of the present embodiment to produce three-color, four-color, five-color or more color pattern steel plates.
  • the embodiment provides a method for producing a pattern steel plate which integrates roll coating printing and screen printing, and the production method is a modification based on the production method provided in the embodiment 1, which is different from the first embodiment.
  • the difference is that the manner in which the steel strip is leveled is different.
  • the specific manner of leveling the steel strip is: a plurality of through holes are disposed on the printing table at a position corresponding to the position where the steel strip is placed, and the bottom of the printing station is set. a fan, wherein the fan blows through the through hole to form a negative pressure in a gap space formed by the steel strip and the printing table, thereby pressing the steel strip toward the The printing table realizes the leveling of the steel strip.
  • the roller coating transfer unit includes the feeding device 1 Providing a coating; a suction roll 2 having a circumferential surface connected to the feeding device 1, the circumferential surface having a plurality of depressions forming an image area when filled with the coating; a rubber coating roller 3, a circumference thereof a surface connected to the suction roller 2 for receiving an image area formed on the coating roller 3 by the coating material, and transferring the image area onto the steel sheet; further comprising a first scraper 4, mounted on a first doctor blade holder is in contact with the suction roller 2 at a specific angle for scraping off the paint outside the image area of the suction roller 2; the second blade 5 is mounted on the second blade holder Contacting the application roller 2 at a specific angle for scraping off the paint outside the image area on the rubber application roller 3.
  • the working process of the roller coating unit is: the suction roller 2 moves, the feeding device 1 sucks The coating roller 2 is supplied with a coating material, a part of the coating material entering a recess in the suction roller 2 for forming an image area, and a portion is located outside the recess on the suction roller 2; scraping with the first scraper 4 After the coating material on the area other than the recess of the suction roll 2, the suction roll 2 rotates to transfer the paint in the recess onto the rubber coating roll 3 to form an image area, using the second The doctor blade scrapes off the paint outside the image area on the rubber coating roller 3; when the rubber coating roller 3 rotates, the image area is further transferred onto the steel strip to be printed to form a color steel plate, and the support roller 7 is used for Supporting the steel strip to be printed provides a supporting force for coating of the rubber coating roller.
  • the method for producing a pattern steel plate by using the roll coating unit provided by the present embodiment is:
  • the steel strip is subjected to secondary roll coating transfer by a second roll coating unit, and the secondary roll coating transfer together with the primary roll coating transfer forms a specific shape of the steel strip to be printed.
  • the first roller coating unit is controlled by a servo control system, and the control process of the servo control system is:
  • the PLC control module inputting the suction roller 2 of the first roller coating unit, the roller diameter of the coating roller 3, and the process speed into the PLC control module, the PLC control module according to the process speed and the suction roller 2 and the The roll diameter of the coating roll 3 calculates the theoretical roll surface linear velocity of the suction roll 2 and the application roll 3 such that the theoretical roll surface linear velocity of the suction roll 2 and the application roll 3 is The process speed is uniform, and the calculated theoretical roll surface linear velocity signals of the suction roller 2 and the coating roller 3 are respectively output to a first servo control module having a first encoder, and have a second a second servo control module of the encoder;
  • the first servo control module receives a theoretical roll surface linear velocity signal from the suction roller 2 of the PLC control module, and drives the suction roller 2 according to the theoretical roll surface linear velocity signal.
  • the second servo control module receives the theoretical roll surface linear velocity signal from the coating roller 3 of the PLC control module, and drives the coating roller 3 according to the theoretical roll surface linear velocity signal;
  • the first encoder collects an actual roll surface linear velocity of the suction roller 2, and outputs an actual roll surface linear velocity signal of the suction roller 2 to the PLC control module, the second encoder collection center The actual roll surface linear velocity of the coating roller 3, and output the actual roll surface linear velocity signal of the coating roller 3 to the PLC control module;
  • the PLC control module adjusts the current frequency of the actual roll surface linear velocity signal and the theoretical roll surface linear velocity signal of the suction roller 2 and the coating roller 3, and further the suction roller 2 And the actual roll surface speed of the coating roller 3
  • the printing of the first roll coating unit is completed up to coincide with the theoretical roll surface speed.
  • the coating roller 3 of the roller coating unit provided by the embodiment is made of rubber, and the structural design is such that the coating roller is in flexible contact with the suction roller 2 and the steel plate to be printed, thereby ensuring contact. "Strict seam” can not only transfer the pattern area on the suction roller 2 to the rubber coating roller 3 completely, but also transfer the image area on the rubber coating roller 3 to the steel plate to be printed. Forming a complete pattern area; in addition, the gravure printing machine provided in this embodiment includes a first scraper 4 and a second scraper 5 (in FIG.
  • the first scraper 4 and the second scraper 5 are respectively coated with the suction roller 2 and the rubber a schematic view of the first scraper 4 for scraping off paint other than the recess for forming an image area on the suction roller 2, the second scraper 5 for using the rubber
  • the coating material outside the image area on the coating roller 3 is removed, thereby avoiding the manual clearing of the above-mentioned paint to cause a defect of low labor efficiency, thereby improving labor productivity; in addition, the first scraper 4 and the second scraper 4 respectively
  • the life of the given angle with the suction roller 2 and in contact with the rubber coated roller 3, can be guaranteed better scraping effect and help to improve the blade.
  • the material of the coating roller provided in this embodiment may be other materials capable of ensuring normal coating and being in flexible contact with the suction roller and the steel plate to be printed, for example, A silicone product that satisfies both elasticity, hardness, and transfer performance at the time of coating.
  • the first scraper blade 4 is in contact with the suction roller 2 at an angle of less than 30 degrees; the second scraper blade 5 is in contact with the coating roller 3 at an angle greater than 30 degrees. .
  • the scraping position of the paint is different at the same time, the first scraper 4 and the second scraper 5 are set at different angles, and the scraping of the suction roller 2 and the coating roller 3 can be ensured at the same time. except.
  • the first scraper 4 is a titanium steel plate; and the second scraper 5 is a titanium steel plate.
  • the thickness of the blade of the first blade 4 is 0.3 mm, and the thickness of the blade of the second blade 5 is 0.3 mm.
  • a cleaning device 6 for cleaning the paint on the second blade 5 and the rubber application roller 3 is added.
  • the cleaning device 6 includes a liquid supply tank 61, a cleaning liquid delivery pump 62 for pumping the liquid supply tank 61, a cleaning liquid delivery conduit 63 communicating with the cleaning liquid delivery pump 62, and the cleaning liquid.
  • a spray pipe 64 communicating with the transfer pipe, the spray pipe 64 being disposed above the axial direction of the rubber coating roller 3, the spray pipe 64 having a plurality of spray holes 65; the cleaning device 6 further a cleaning liquid recovery tank 66 disposed under the coating roller 3; the cleaning liquid recovery tank 66 is connected to a recovery pipeline 67, the recovery conduit 67 leading to the liquid supply tank 61; the recovery pipeline 67 and A filter 68 is disposed between the liquid supply tanks 61.
  • the working process of the cleaning device 6 provided in this embodiment is:
  • the cleaning liquid in the liquid supply tank 61 is pumped into the shower pipe 64 by the transfer pump 62 to be sprayed through the shower hole 65, and then the cleaning liquid is returned from the rubber coating roller 3 to the cleaning liquid recovery. Inside the trough 66, and through the recovery pipeline 67 and The filter 68 is filtered and finally returned to the liquid supply tank 61 for recycling.
  • the feeding device 1 is a tray having a groove.

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Abstract

本发明提供的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法，将丝网印刷与辊涂印刷相结合，不但能够获得较为精确的底色花纹并且能够获得较为厚实的且立体感较强的印刷层，同时，在辊涂段中加入了对所述辊涂设备组件中各辊的转速以及启动时间进行控制的伺服控制系统，从而确保了实际辊面线速度与工艺转速一致，进而在生产过程中不需要停线调整，提高了生产效率。

Description

说 明 书
一种集辊涂印刷和丝网印刷为一体的图码钢板的生产方法 技术领域
[0001] 本发明涉及一种集辊涂印刷与丝网印刷为一体的图码钢板的生产方法，
属于图码钢板生产制造领域。
背景技术
[0002] 丝网印刷与平印印刷、 凸印印刷、 凹印印刷一起被称为四大印刷方法。 丝网印刷需 要丝网印刷组件来完成， 丝网印刷设备组件主要由五大要素构成： 丝网印版、 刮刮板、 油墨、 印刷台以及承印物， 其中， 丝网印版上设置有图文部分网孔和非图文部分网孔， 图文部分的 网孔能够透过油墨， 非图文部分的网孔不能透过油墨。
[0003] 利用丝网印刷设备组件进行印刷的基本过程是： 印刷时， 在丝网印版一侧倒入油墨， 用刮刮板在丝网印版上的油墨部位施加一定压力， 使得油墨朝丝网印版另一侧移动， 油墨在 移动中被刮印刮板从图文部分网孔中挤压到承印物上， 由于油墨的粘性作用而使印迹固着在 一定范围之内， 进而形成与图文部分网孔一样的图文。 当刮板刮过整个版面后抬起， 同时丝 网印版也抬起， 并将油墨刮回初始位置， 至此为一个印刷行程， 完成一种颜色或单色图案或 花纹的印制。
[0004] 在丝网印刷过程中， 由于丝网印版与承印物之间保持一定的间隙， 使得印刷时的丝 网印版通过自身的张力而产生对刮板的反作用力， 这个反作用力称为回弹力， 由于回弹力的 作用， 使丝网印版与承印物呈移动式线接触， 而丝网印版其它部分与承印物为脱离状态， 进 而使油墨与丝网印版发生断裂运动， 因此， 丝网印刷具有较高的尺寸精度。 另外， 丝网印刷 通过刮板的挤压， 使油墨通过图文部分网孔转移到承印物上， 形成与原稿一样的图文， 其设 备简单、 操作方便且成本低廉。 目前丝网印刷已经被广泛地应用于纸张的印刷中， 常见的丝 网印刷产品有： 彩色油画、 招贴画、 名片、 装帧封面、 商品标牌以及印染纺织品等。
[0005] 目前， 丝网印刷技术已经被成功的转应用于钢板上， 以在钢板上形成较为厚实且立 体感较强的印刷层。 然而， 丝网印刷的印刷精度相对于凹版印刷技术较低， 为了获得精度较 高的印刷图码或者条纹， 且保证装饰面具有厚实的且立体感较强的印刷层， 现有很多生产厂 家试图将丝网印刷与凹版印刷结合起来， 在丝网印刷之前， 采用凹版印刷设备进行底色花纹 的辊涂， 并在辊涂之后采用丝网印刷技术实现厚实的印刷层。
[0006] 现有的实现辊涂的辊涂设备组件， 包括供料设备， 用于提供涂料； 吸料辊， 其圆周 面与所述供料设备连接， 所述圆周面上具有在用所述涂料填充时形成图像区域的多个凹陷； 橡胶涂覆辊， 其圆周面与所述吸料辊连接， 用于承接所述涂料在所述涂覆辊上形成的图像区 域， 并将所述图像区域转印到钢板上以形成所需要的彩色花纹。
[0007] 然而， 申请人在使用上述辊涂设备组件过程中发现， 所述涂覆辊、 吸料辊的辊面线 速度经常与整个生产线的工艺速度不一致， 而整个生产线缺少对所述吸料辊和涂覆辊的转速 进行线上调整的控制系统， 从而导致在整个生产线运行一段时间后经常需要停线调整， 进而 影响了整个生产线的效率； 而若不停线调整就会导致运送钢板的速度与各辊的辊面线速度不 一致， 进而经常导致不能按照预定的位置对钢板进行辊涂转印； 另外， 为了印刷多色花纹， 往往需要几组辊涂设备组件协同运作， 而现有技术中的上述辊涂设备组件缺少一种使得相邻 辊涂设备组件连续生产的控制系统， 即， 需要工作人员通过人眼观察第一个辊涂设备组件是 否已经将一种颜色涂覆完成， 确定涂覆完成之后， 再通过人工启动相邻辊涂设备组件， 从而 使得相邻辊涂设备组件之间无法实现连续生产； 同时， 由于缺少对吸料辊和涂覆辊的转速进 行调整的控制系统， 从而无法在相邻辊涂设备组件印制的花纹错位时进行纠错。
[0008] 综上所述， 在丝网印刷生产线中引入辊涂设备组件进行底漆的多色辊涂时， 如何对 辊涂设备组件中的各辊的辊面线速度进行调整并使各辊的辊面线速度与工艺转速一致， 进而 提高生产效率是现有技术中还没有解决的技术难题。
发明内容
[0009] 因此， 本发明要解决的技术问题在于提供一种能够将丝网印刷与辊涂印刷结合起来， 并能够对辊涂设备组件的各辊的辊面线速度进行调整并使其与工艺转速一致从而提高生产效 率的图码钢板的生产方法。
[0010] 为此， 本发明提供一种集辊涂印刷与丝网印刷为一体的图码钢板的生产方法， 至少 包括如下依次设置的工艺步骤：
A.准备待印钢带；
B.采用第一辊涂机组对所述待印钢带进行一次辊涂转印；
C.特定时间后采用第二辊涂机组对所述钢带进行二次辊涂转印， 所述二次辊涂转印与所述一 次辊涂转印一同形成所述待印钢带的特定底色花纹；
D.将形成底色花纹的所述钢带放置在印刷台上进行丝网印刷， 以在具有特定底色花纹的钢带 上形成特定形状的图码；
其中， 在所述步骤 B 中采用伺服控制系统对所述第一辊涂机组进行控制， 所述伺服控制系 统的控制过程为：
S1 , 将第一辊涂机组中各辊的辊径以及工艺速度输入到 PLC控制模块中， 所述 PLC控制 模块根据工艺速度以及各辊的辊径计算出各辊的理论辊面线速度， 使得各辊的理论辊面线速 度与所述工艺速度一致， 并将计算出的各辊的理论辊面线速度信号分别输出到带有编码器的 伺服控制模块；
S2, 所述伺服控制模块接收来自所述 PLC 控制模块的各辊的理论辊面线速度信号， 并根据 所述理论辊面线速度信号驱动各辊；
S3， 所述编码器采集各辊的实际辊面线速度， 并向所述 PLC 控制模块输出各辊的实际辊面 线速度信号；
S4, 所述 PLC 控制模块根据接收到的各辊的实际辊面线速度信号和理论辊面线速度信号调 整驱动各辊的电机的电流频率， 进而将各辊的实际辊面线速度修正至与所述理论辊面线速度 一致时， 完成第一辊涂机组的辊涂转印。
[0011] 在所述步骤 B 的 S1 步骤中， 所述 PLC控制模块中还输入有所述第一辊涂机组和所 述第二辊涂机组之间的距离数据， 所述 PLC控制模块根据工艺速度和所述距离数据计算出 启动第二辊涂机组的特定时间， 并按照所述特定时间启动第二辊涂机组， 完成第二辊涂机组 的辊涂转印。
[0012] 在所述步骤 B的 S4步骤后， 通过暗码识别模块采集印刷后的花纹， 并通过电脑识别 确定花色错位距离， 从而对对应辊涂机组的工艺速度进行修正。
[0013] 所述印刷台的底部设置有整平装置， 在进行所述步骤 D 的丝网印刷之前， 采用所述 整平装置对所述钢带的表面进行印刷之前的整平。
[0014] 所述印刷台采用铁磁性材料制成， 在所述印刷台的下部与所述钢带的放置位置对应 的位置处设置有电磁线圈， 所述电磁线圈与通电控制装置相连接， 在进行所述整平时， 控制 所述通电控制装置使所述电磁线圈通电， 进而磁化所述印刷台， 被磁化的所述印刷台吸引所 述钢带进而将所述钢带整平。
[0015] 所述印刷台上与所述钢带的放置位置相对应的位置处设置有若干个通孔， 所述印刷 台的底部设置有风机， 在进行整平时， 所述风机透过所述通孔吸风， 从而在所述钢带与所述 印刷台形成的间隙空间内形成负压， 进而将所述钢带压向所述印刷台， 实现所述钢带的整平。
[0016] 还包括在所述一次辊涂转印步骤前对所述钢带进行的电晕处理步骤。
[0017] 还包括在所述电晕处理步骤之后且在所述一次辊涂转印步骤之前对所述钢带进行的 静电除尘处理步骤。
[0018] 在所述步骤 A 中， 采用开卷机对钢卷进行开卷且进行修边处理， 并采用缝合机将开 卷后的钢带进行缝合处理。 [0019] 在所述步骤 A和所述电晕处理步骤之间， 还包括对所述待印钢带进行转印前处理的 步骤， 所述前处理的步骤依次包括： 脱脂处理、 清洗处理、 烘干处理、 钝化处理以及烘干处 理。
[0020] 本发明提供的多色花纹彩钢板的生产方法具有以下优点：
1.本发明提供的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 将丝网印刷与辊涂印 刷相结合， 不但能够获得较为精确的底色花纹并且能够获得较为厚实的且立体感较强的印刷 层， 同时， 在辊涂段中加入了对所述辊涂设备组件中各辊的转速以及启动时间进行控制的伺 服控制系统， 对于一次印刷来说， 一方面， PLC控制系统通过采集工艺速度以及辊涂机组中 各辊子的转速， 计算出辊涂机组中各辊子的理论辊面线速度， 并使得理论辊面线速度与工艺 转速一致； 另一方面， 通过伺服控制模块采集辊涂机组中各辊子的实际辊面线速度， 并将实 际辊面线速度信号输入到 PLC控制系统， 从而使得 PLC控制系统能够与实际辊面线速度和 理论辊面线速度进行比较， 并调整电流频率， 直至实际辊面线速度与理论辊面线速度相一致。 上述控制方法将实际辊面线速度调整为与理论辊面线速度相一致， 而理论辊面线速度与工艺 速度一致， 从而确保了实际辊面线速度与工艺转速一致， 进而在生产过程中不需要停线调整， 提高了生产效率。
[0021] 2. 本发明提供的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 加入了伺服 控制系统， 所述 PLC 控制系统中还输入有第一辊涂机组和第二辊涂机组之间的距离数据， 并能够根据工艺速度和所述距离数据计算出启动第二辊涂机组的时间。 由于生产线一旦确定， 相邻机组之间的距离就确定， 事先将所述数据数据输入到 PLC控制系统中， 所述 PLC控制 系统 根据工艺速度以及距离数据， 计算出下一辊涂生产线启动的时间， 从而将时间进行事 先设定， 从而使得下一辊涂生产线在预定时间内启动， 进而实现了相邻辊涂机组的连续作业， 进一步提高了生产效率。
[0022] 3. 本发明提供的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 加入了伺服 控制系统， 所述伺服控制系统中还包括暗码识别模块， 所述暗码识别模块采集印刷后的花纹， 并通过电脑识别确定花色错位距离， 从而对对应辊涂机组的工艺速度进行修正。 在下一辊涂 生产线启动并完成二次印刷后， 通过暗码识别模块采集印刷后的花纹， 并通过电脑识别确定 花色错位距离， 从而根据花色错位距离对各辊的转速进行修正， 使得花色错位情况得到修正， 上述过程可以循环进行， 从而保证了印制出的花纹完整而逼真， 另外， 暗码识别模块的加入 使得印刷出的花纹的长度大大增大。
[0023] 4.本发明提供的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 所述印刷台的 底部设置有整平装置， 在进行所述步骤 D 的丝网印刷之前， 采用所述整平装置对所述钢带 的表面进行印刷之前的整平， 从而使得丝网印刷段中， 刮板可以在均匀力的作用下进行油墨 转印， 降低了印刷难度， 从而使丝网印刷应用于图码钢板的生产中成为可能。 本发明中， 具 体提供两种整平方式： 方式一、 所述印刷台为铁磁性材料印刷台， 所述印刷台的下部与所述 钢带的盛放位置对应的位置处设置有电磁线圈， 所述电磁线圈与通电控制装置相连接， 利用 该种整平方式进行整平时， 通过通电控制装置使得电磁线圈通电， 所述电磁线圈通电后将产 生磁场， 从而使得所述印刷台被磁化， 被磁化后的印刷台起到电磁铁的作用， 将钢带平整地 吸附到印刷台上， 从而实现了对钢带的整平； 方式二、 所述印刷台上与所述钢带的盛放位置 相对应的位置处设置有若干个通孔， 所述印刷台的底部设置有风机， 所述风机能够透过所述 通孔吸风， 利用该种整平方式进行整平时， 由于所述印刷台上设置有若干个通孔， 而钢带在 不平时， 将与所述印刷台之间产生间隙， 通过所述风机吸风， 风就能透过所述通孔流向所述 风机， 从而在所述钢带和印刷台之间的间隙处产生负压区， 从而将所述钢带吸附在印刷台上， 进而实现整平。 上述两种整平装置结构简单， 便于操作。
[0024] 5. 本发明提供的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 还包括在所 述一次辊涂转印步骤前对所述钢带进行的电晕处理步骤， 电晕处理在钢带表面形成若干个小 凹坑， 提高钢带表面的表面粗糙度， 从而提高了钢带表面与油墨的附着力， 使得图案层不容 易出现 "掉漆"现象， 提高了钢带的成型性。
[0025] 6. 本发明提供的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 还包括在所 述电晕处理步骤之后且在所述一次辊涂转印步骤之前对所述钢带进行的静电除尘处理步骤。 对经过电晕处理的钢带进行静电除尘处理， 去除钢带表面在电晕处理过程中产生的 "钢屑"， 提高了表面洁净度。
附图说明
[0026] 为了使本发明的内容更容易被清楚的理解， 下面根据本发明的具体实施例并结合附 图， 对本发明作进一步详细的说明， 其中
图 1是本发明的多色花纹彩钢板的生产方法的流程图；
图 2是本发明辊涂机组的结构示意图；
图 3本发明提供的伺服控制系统的工作流程图；
图中附图标记表示为：
1-供料设备； 2-吸料辊； 3-橡胶涂覆辊； 4-第一刮刀； 5-第二刮刀； 6-清洗装置； 61-供液箱; 62-传送泵； 63-传送管道； 64-喷淋管； 65-喷淋孔； 67-回收槽； 68-过滤器； 7-支撑辊。 具体实施方式
[0027] 实施例 1
如图 1所示， 本实施例提供一种两色花纹彩钢板的生产方法， 包括如下步骤：
A. 准备待印钢带，在该步骤中采用开卷机对钢卷进行开卷且进行修边处理以及采用缝合机将 开卷后的钢带进行缝合处理；
B.采用第一辊涂机组对所述待印钢带进行一次辊涂转印；
C.特定时间后采用第二辊涂机组对所述钢带进行二次辊涂转印， 所述二次辊涂转印与所述一 次辊涂转印一同形成所述待印钢带的特定底色花纹；
D.将形成底色花纹的所述钢带放置在印刷台上进行丝网印刷， 以在具有特定底色花纹的钢带 上形成特定形状的图码；
其中， 在所述步骤 B 中采用伺服控制系统对所述第一辊涂机组进行控制， 所述伺服控制系 统的控制过程为， 见图 3:
51 , 将第一辊涂机组中各辊的辊径以及工艺速度输入到 PLC控制模块中， 所述 PLC控制模 块根据工艺速度以及各辊的辊径计算出各辊的理论辊面线速度 （具体的计算方法为： 理论转 速=工艺速度 /兀 *辊直径， 理论辊面线速度=理论转速 *辊直径 *兀）， 使得各辊的理论辊面线 速度与所述工艺速度一致， 并将计算出的各辊的理论辊面线速度信号分别输出到具有编码器 的伺服控制模块；
52, 所述伺服控制模块接收来自所述 PLC 控制模块的各辊的理论辊面线速度信号， 并根据 所述理论辊面线速度信号驱动各辊；
53,所述编码器采集各辊的实际辊面线速度， 并向所述 PLC 控制模块输出各辊的实际辊面线 速度信号；
54,所述 PLC 控制模块根据接收到的各辊的实际辊面线速度信号和理论辊面线速度信号调整 驱动各辊的电机的电流频率， 进而将各辊的实际辊面线速度修正至与所述理论辊面线速度一 致时， 完成第一辊涂机组的辊涂转印。
[0028] 在本实施例中， 为了实现相邻辊涂机组的线上连续作业， 在所述步骤 S1 中， 所述 PLC控制模块中还输入有第一辊涂机组和第二辊涂机组之间的距离数据， 所述 PLC控制模 块根据工艺速度和所述距离数据计算出启动第二辊涂机组的时间， 并按照启动时间启动第二 辊涂机组， 完成第二辊涂机组的印刷。
[0029] 在本实施例中， 为了印制不规则的长幅花纹的需要， 在完成第二辊涂机组的印刷后， 即在 S4 步骤后， 通过暗码识别模块采集印刷后的花纹， 并通过电脑识别系统确定花色错位 距离， 从而对对应辊涂机组的工艺速度进行修正， 具体的修正过程为： 如果通过暗码识别模 块采集到的花纹中后辊涂的颜色相对于先辊涂上的颜色与预定辊涂位置产生一个错位距离， 例如， 相对于预定辊涂位置靠前了 10mm， 这说明运送钢带的辊子的实际工艺速度 （用 VI 表示） 相对于应该运行的工艺速度 (用 V2表示)在单位时间内快了 10mm， 此时， V2=V1-10， 计算出 V2之后， 将 V2转化为应该运行的辊子的转速 (用 N表示)， N= V2/兀 *辊直径径， 从 而根据转速 N 调整对应电机的电流频率， 从而对对应辊子的转速进行调整， 进而调整工艺 速度， 最终将花色的错位精度控制在 ± 0.6 毫米以内， 这是一个动态反复的调节过程。 在此， 通过暗码识别模块中的数码摄像机采集印刷后的花纹。
[0030] 本实施例中， 为了降低丝网印刷的难度， 由于在所述印刷台的底部设置有整平装置， 所述整平装置能够将经过冷轧和 /或热轧处理且剪切成型的钢带进行整平， 从而使得丝网印 刷段中， 刮板可以在均匀力的作用下进行油墨转印， 降低了印刷难度， 所述印刷台的底部设 置有整平装置， 在进行所述步骤 D 的丝网印刷之前， 采用所述整平装置对所述钢带的表面 进行印刷之前的整平， 本实施例中， 具体的整平方式为： 所述印刷台采用铁磁性材料制成， 在所述印刷台的下部与所述钢带的放置位置对应的位置处设置有电磁线圈， 所述电磁线圈与 通电控制装置相连接， 在进行所述整平时， 控制所述通电控制装置使所述电磁线圈通电， 进 而磁化所述印刷台， 被磁化的所述印刷台吸引所述钢带进而将所述钢带整平。
[0031] 在本实施例中， 为了提高印刷后钢带的成型性， 在所述步骤 A和所述步骤 B之间， 还包括对所述待印钢带进行转印前处理的步骤， 所述前处理的步骤依次包括： 脱脂处理， 采 用浓度为 1%， 温度 50-65 度的碱液进行脱脂， 以去除带钢表面的油污及粉尘， 碱液总碱与 游离碱的比例小于 2.5; 清洗处理， 采用 50-65 度的脱盐水对脱脂后的带钢表面进行冲洗， 以去除带钢表面的残余碱液， 冲洗水的 PH值小于 7.8; 烘干处理， 采用 75~85度的热风对 清洗后的带钢表面残余的水分进行干燥， 热风通过蒸汽换热器进行加热； 钝化处理， 采用铬 点为 22-32之间的处理液对清洁后的带钢表面进行钝化处理， 以增加带钢与底漆的附着力及 防腐性能； 烘干处理， 采用电加热烘箱对钝化处理后的表面进行干燥处理， 以强化钝化效果， 板面烘烤温度 72-85度、 初涂底漆处理采用第一辊涂机组对带钢表面涂覆背漆及底漆， 底漆 的颜色及性能根据所印花色来确定； 烘烤固化处理以及冷却处理， 对涂覆底漆和背漆的带钢 进行烘烤， 使底漆及背漆充分固化， 固化温度 214-232度， 然后通过水雾及水流对烘烤固化 后的带钢进行冷却， 进一步稳定所涂覆底漆及面漆的性能。
[0032] 在本实施例中， 为了提高底色花纹的亮度及保护， 在所述步骤 C之后， 对钢带进行 后处理， 所述后处理包括在钢带表面精涂光亮漆， 在精涂光亮漆之后进行再次烘干处理， 在 再次烘干处理之后进行再次冷却处理。
[0033] 在本实施例中， 为了使得生产出的钢带便于运输和储藏， 在完成所有辊涂转印后， 采用卷取机对钢带进行卷取处理。
[0034] 在本实施例中， 在一次辊涂转印之后二次辊涂转印之后还包括中间处理的步骤， 所 述中间处理步骤为烘干冷却处理， 值得注意的是， 在增加中间处理步骤之后， 需要保证中间 处理步骤在第二辊涂机组启动时间之前完成， 或者， 在计算第二辊涂机组的启动时间时， 考 虑中间处理步骤的时间， 从而对第二辊涂机组的启动时间进行修正。
[0035] 需要说明的是， 对于本发明的上述多色花纹彩钢板的生产方法来说， 所述步骤 B 和 所述步骤 C需要采用辊涂机组来实现， 但是对于具体的辊涂机组的结构不做限制。
[0036] 值得注意的是， 本实施例提供的是两色花纹彩钢板的生产方法， 所需要的辊涂转印 机组为两组， 而本领域技术人员可以按照本实施例公开的生产方法， 尤其是伺服控制系统中 的调整转速、 第二辊涂机组启动时间以及暗码识别技术在本实施例基础上进行改造， 进行三 色、 四色、 五色或者更多色花纹彩钢板的生产。
[0037] 实施例 2
本实施例提供一种集辊涂印刷与丝网印刷为一体的图码钢板的生产方法， 该种生产方法是在 实施例 1提供的生产方法基础上的变形， 其与实施例 1唯一的不同之处在于： 对所述钢带进 行整平的方式不同。 本实施例中， 对所述钢带进行整平的具体方式为： 所述印刷台上与所述 钢带的放置位置相对应的位置处设置有若干个通孔， 所述印刷台的底部设置有风机， 在进行 整平时， 所述风机透过所述通孔吸风， 从而在所述钢带与所述印刷台形成的间隙空间内形成 负压， 进而将所述钢带压向所述印刷台， 实现所述钢带的整平。
[0038] 实施例 3
本实施例中提供一种用于实施例 1和实施例 2中的步骤 B和步骤 C的辊涂转印机组的结 构， 具体结构见图 2， 所述辊涂机组包括供料设备 1， 用于提供涂料； 吸料辊 2， 其圆周面 与所述供料设备 1连接， 所述圆周面上具有在用所述涂料填充时形成图像区域的多个凹陷； 橡胶涂覆辊 3， 其圆周面与所述吸料辊 2连接， 用于承接所述涂料在所述涂覆辊 3上形成的 图像区域， 并将所述图像区域转印到钢板上； 还包括第一刮刀 4， 安装在第一刮刀支架上， 以特定角度与所述吸料辊 2接触， 用于刮除所述吸料辊 2的所述图像区域之外的涂料； 第二 刮刀 5， 安装在第二刮刀支架上， 以特定角度与所述涂覆辊 2接触， 用于刮除所述橡胶涂覆 辊 3上的所述图像区域之外的涂料。
[0039] 本实施例提供的辊涂机组的工作过程为： 所述吸料辊 2运动， 所述供料设备 1 向吸 料辊 2上供应涂料， 所述涂料一部分进入所述吸料辊 2上的用于形成图像区域的凹陷内， 一 部分位于所述吸料辊 2上的凹陷以外的区域； 用第一刮刀 4刮除所述吸料辊 2的凹陷以外的 区域上的涂料后， 所述吸料辊 2转动将所述凹陷内的涂料转印上所述橡胶涂覆辊 3上， 形成 图像区域， 用第二刮刀刮除所述橡胶涂覆辊 3上的图像区域以外的涂料； 所述橡胶涂覆辊 3 转动时进一步将所述图像区域转印到待印钢带上形成彩钢板， 支撑辊 7用于支撑所述待印钢 带， 为所述橡胶涂覆辊的涂覆提供支撑力。
[0040] 采用本实施提供的辊涂机组来生产图码钢板的方法为：
A. 准备待印钢带，在该步骤中采用开卷机对钢卷进行开卷且进行修边处理以及采用缝合机将 开卷后的钢带进行缝合处理；
B.采用第一辊涂机组对所述待印钢带进行一次辊涂转印；
C.特定时间后采用第二辊涂机组对所述钢带进行二次辊涂转印， 所述二次辊涂转印与所述一 次辊涂转印一同形成所述待印钢带的特定底色花纹；
D.将形成底色花纹的所述钢带放置在印刷台上进行丝网印刷， 以在具有特定底色花纹的钢带 上形成特定形状的图码；
在所述步骤 B 中采用伺服控制系统对所述第一辊涂机组进行控制， 所述伺服控制系统的控 制过程为：
51,将第一辊涂机组中的吸料辊 2、 涂覆辊 3 的辊径以及工艺速度输入到 PLC控制模块中， 所述 PLC控制模块根据工艺速度以及所述吸料辊 2和所述涂覆辊 3的辊径计算出所述吸料 辊 2和所述涂覆辊 3的理论辊面线速度， 使得所述吸料辊 2和所述涂覆辊 3的理论辊面线速 度与所述工艺速度一致， 并将计算出的所述吸料辊 2和所述涂覆辊 3的理论辊面线速度信号 分别输出到具有第一编码器的第一伺服控制模块， 和具有第二编码器的第二伺服控制模块；
52,所述第一伺服控制模块接收来自所述 PLC控制模块的所述吸料辊 2的理论辊面线速度信 号， 并根据所述理论辊面线速度信号驱动所述吸料辊 2， 所述第二伺服控制模块接收来自所 述 PLC控制模块的所述涂覆辊 3 的理论辊面线速度信号， 并根据所述理论辊面线速度信号 驱动所述涂覆辊 3;
53,所述第一编码器采集所述吸料辊 2的实际辊面线速度， 并向所述 PLC控制模块输出吸料 辊 2的实际辊面线速度信号， 所述第二编码器采集所述涂覆辊 3的实际辊面线速度， 并向所 述 PLC控制模块输出涂覆辊 3的实际辊面线速度信号；
54,所述 PLC控制模块将接收到的所述吸料辊 2和所述涂覆辊 3的实际辊面线速度信号和理 论辊面线速度信号调整电流频率， 进而将所述吸料辊 2和所述涂覆辊 3的实际辊面线速度修 正至与所述理论辊面线速度一致时， 完成第一辊涂机组的印刷。
[0041] 本实施例提供的辊涂机组的涂敷辊 3 采用橡胶制成， 这样的结构设计使得涂敷辊分 别与吸料辊 2 以及待印钢板之间进行柔性接触， 从而保证了接触的 "严丝合缝"， 不但能够 将吸料辊 2上的图案区域完整的转印到橡胶涂覆辊 3上， 也能够将橡胶涂覆辊 3上的图像区 域完整的转印到待印钢板上， 从而形成完整的图案区域； 另外， 本实施例提供的凹版印刷机 包括第一刮刀 4和第二刮刀 5(图 1中是第一刮刀 4和第二刮刀 5分别与吸料辊 2和橡胶涂覆 辊 3接触时的示意)， 所述第一刮刀 4用于将所述吸料辊 2上的用于形成图像区域的凹陷以 外的涂料刮除， 所述第二刮刀 5用于将所述橡胶涂覆辊 3上图像区域以外的涂料去除， 避免 了人工清楚上述涂料造成了劳动效率较低的缺陷， 从而提高了劳动生产率； 另外， 所述第一 刮刀 4和所述第二刮刀 4分别以特定角度与所述吸料辊 2和所述橡胶涂覆辊 3接触， 能够保 证较好的刮除效果， 并有利于提高刮刀的使用寿命。
[0042] 需要说明的是， 本实施例提供的涂覆辊的材料除了采用橡胶之外， 还可以采用能够 保证正常涂覆且能与吸料辊和待印钢板柔性接触的其他材料， 例如， 能够同时满足弹性、 硬 度以及涂覆时转印性能的硅胶制品。
[0043] 在本实施例中， 所述第一刮刀 4以小于 30度的角度与所述吸料辊 2接触； 所述第二 刮刀 5 以大于 30度的角度与所述涂覆辊 3接触。 在凹版印刷过程中， 同一时刻对于涂料的 刮除位置不同， 所述第一刮刀 4和所述第二刮刀 5设置为不同的角度， 可以同时保证对吸料 辊 2和涂覆辊 3的刮除。
[0044] 在本实施例中， 所述第一刮刀 4 为钛钢板； 所述第二刮刀 5 为钛钢板。 所述第一刮 刀 4的刀刃的厚度为 0.3mm， 所述第二刮刀 5的刀刃的厚度为 0.3mm。
[0045] 在本实施例中， 为了改进辊涂机组的性能， 加装了清洗装置 6, 用于对所述第二刮刀 5以及所述橡胶涂覆辊 3上的涂料进行清洗。 所述清洗装置 6包括供液箱 61、 用于泵送所述 供液箱 61内的清洗液传送泵 62、 与所述清洗液传送泵 62连通的清洗液传送管道 63以及与 所述清洗液传送管道连通的喷淋管 64， 所述喷淋管 64设置在所述橡胶涂覆辊 3的轴向上方， 所述喷淋管 64上具有若干个喷淋孔 65; 所述清洗装置 6还包括设置在所述涂覆辊 3下方的 清洗液回收槽 66; 所述清洗液回收槽 66连接一个回收管道 67， 所述回收管道 67通向所述 供液箱 61 ; 所述回收管道 67和所述供液箱 61之间设置一个过滤器 68。
[0046] 本实施例提供的清洗装置 6的工作过程为：
在工作时， 通过传送泵 62将供液箱 61内的清洗液泵送到喷淋管 64内通过喷淋孔 65进行喷 淋， 之后清洗液从所述橡胶涂覆辊 3回流到清洗液回收槽 66内， 并通过回收管道 67以及过 滤器 68过滤后最后回到供液箱 61内， 供循环使用。
[0047] 在本实施例中， 所述供料设备 1为一个具有凹槽的料盘。
[0048] 显然， 上述实施例仅仅是为清楚地说明所作的举例， 而并非对实施方式的限定。 对 于所属领域的普通技术人员来说， 在上述说明的基础上还可以做出其它不同形式的变化或变 动。 这里无需也无法对所有的实施方式予以穷举。 而由此所引伸出的显而易见的变化或变动 仍处于本发明的保护范围之内。

Claims

权利要求书
1. 一种集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 至少包括
如下依次设置的工艺步骤：
准备待印钢带；
B.采用第一辊涂机组对所述待印钢带进行一次辊涂转印；
C.特定时间后采用第二辊涂机组对所述钢带进行二次辊涂转印， 所述二次辊涂转印与所述一 次辊涂转印一同形成所述待印钢带的特定底色花纹；
D.将形成底色花纹的所述钢带放置在印刷台上进行丝网印刷， 以在具有特定底色花纹的钢带 上形成特定形状的图码；
其特征在于：
在所述步骤 B 中采用伺服控制系统对所述第一辊涂机组进行控制， 所述伺服控制系统的控 制过程为：
51 , 将第一辊涂机组中各辊的辊径以及工艺速度输入到 PLC控制模块中， 所述 PLC控制模 块根据工艺速度以及各辊的辊径计算出各辊的理论辊面线速度， 使得各辊的理论辊面线速度 与所述工艺速度一致， 并将计算出的各辊的理论辊面线速度信号分别输出到带有编码器的伺 服控制模块；
52, 所述伺服控制模块接收来自所述 PLC 控制模块的各辊的理论辊面线速度信号， 并根据 所述理论辊面线速度信号驱动各辊；
53,所述编码器采集各辊的实际辊面线速度， 并向所述 PLC 控制模块输出各辊的实际辊面线 速度信号；
54,所述 PLC 控制模块根据接收到的各辊的实际辊面线速度信号和理论辊面线速度信号调整 驱动各辊的电机的电流频率， 进而将各辊的实际辊面线速度修正至与所述理论辊面线速度一 致时， 完成第一辊涂机组的辊涂转印。
2. 根据权利要求 1 所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在 于：
在所述步骤 B的 S1步骤中， 所述 PLC控制模块中还输入有所述第一辊涂机组和所述第二辊 涂机组之间的距离数据， 所述 PLC 控制模块根据工艺速度和所述距离数据计算出启动第二 辊涂机组的特定时间， 并按照所述特定时间启动第二辊涂机组， 完成第二辊涂机组的辊涂转 印。
3. 根据权利要求 2所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在 于： 在所述步骤 B的 S4步骤后， 通过暗码识别模块采集印刷后的花纹， 并通过电脑识别确 定花色错位距离， 从而对对应辊涂机组的工艺速度进行修正。
4. 根据权利要求 1-3中任一项所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在于： 所述印刷台的底部设置有整平装置， 在进行所述步骤 D 的丝网印刷之前， 采 用所述整平装置对所述钢带的表面进行印刷之前的整平。
5. 根据权利要求 4所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在 于： 所述印刷台采用铁磁性材料制成， 在所述印刷台的下部与所述钢带的放置位置对应的位 置处设置有电磁线圈， 所述电磁线圈与通电控制装置相连接， 在进行所述整平时， 控制所述 通电控制装置使所述电磁线圈通电， 进而磁化所述印刷台， 被磁化的所述印刷台吸引所述钢 带进而将所述钢带整平。
6. 根据权利要求 4所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在 于： 所述印刷台上与所述钢带的放置位置相对应的位置处设置有若干个通孔， 所述印刷台的 底部设置有风机， 在进行整平时， 所述风机透过所述通孔吸风， 从而在所述钢带与所述印刷 台形成的间隙空间内形成负压， 进而将所述钢带压向所述印刷台， 实现所述钢带的整平。
7. 根据权利要求 1-6中任一项所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在于： 还包括在所述一次辊涂转印步骤前对所述钢带进行的电晕处理步骤。
8. 根据权利要求 7 所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在 于： 还包括在所述电晕处理步骤之后且在所述一次辊涂转印步骤之前对所述钢带进行的静电 除尘处理步骤。
9. 根据权利要求 1-8中任一项所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在于： 在所述步骤 A 中， 采用开卷机对钢卷进行开卷且进行修边处理， 并采用缝合 机将开卷后的钢带进行缝合处理。
10. 根据权利要求 1-9 中任一项所述的集辊涂印刷和丝网印刷为一体的图码钢板的生产方法， 其特征在于： 在所述步骤 A和所述电晕处理步骤之间， 还包括对所述待印钢带进行转印前 处理的步骤， 所述前处理的步骤依次包括： 脱脂处理、 清洗处理、 烘干处理、 钝化处理以及 烘干处理。
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