CN110614840A - Microstructure copying line intaglio printing press and copying line intaglio printing method thereof - Google Patents
Microstructure copying line intaglio printing press and copying line intaglio printing method thereof Download PDFInfo
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- CN110614840A CN110614840A CN201910996617.6A CN201910996617A CN110614840A CN 110614840 A CN110614840 A CN 110614840A CN 201910996617 A CN201910996617 A CN 201910996617A CN 110614840 A CN110614840 A CN 110614840A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/02—Rotary intaglio printing presses for multicolour printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
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Abstract
The invention discloses a microstructure replication connecting line gravure printing machine which comprises an unreeling system, a nano optical microstructure replication system, a fixed length control system, at least two groups of gravure printing systems and a reeling system which are sequentially arranged along a material conveying direction, wherein the nano optical microstructure replication system is provided with a nano optical microstructure replication roller, each group of gravure printing systems is provided with a gravure printing roller for gravure printing an image on a film material with an imprinted image, and the fixed length control system is used for adjusting the length of the film material between the nano optical microstructure replication system and the gravure printing system adjacent to the nano optical microstructure replication system; a microstructure replication link production method is also disclosed. The invention can obtain the nano microstructure texture images and the gravure printing images with stable spacing, has more accurate positioning, can carry out on-line and real-time tracking, adjustment and alignment, can continue more gravure printing color groups by analogy and has wider application.
Description
Technical Field
The invention relates to the technical field of optical structure color packaging and packaging printing anti-counterfeiting, in particular to a microstructure copying line intaglio printing machine and a copying line intaglio printing method thereof.
Background
The nano optical microstructure texture is introduced to China from abroad in the early 80 th century, the research is mainly carried out by various colleges and universities in China at the beginning, and the nano optical microstructure texture is converted into commercial texture in the late 80 th century. The nano optical texture has been widely used in the field of optical anti-counterfeiting and packaging printing for more than 20 years, gradually participates in the expression of printing image-text colors, reduces the ink consumption, and even replaces ink printing, so that the nano optical texture becomes a novel ink-free printing packaging product.
At present, the printing of the nano optical micro-texture structure is realized by an off-line printing mode, and the main printing modes comprise offset printing, intaglio printing, relief printing and the like. The nanometer optical texture image needs to be imprinted on the film material in advance in a hot embossing mode, after the imprinting is finished, the imprinted film material needs to be placed on the unreeling system mechanism again, and then the nanometer optical microstructure image and the printed image are combined through off-line printing.
Disclosure of Invention
The invention aims to provide a microstructure replication line gravure printing machine and a replication line gravure printing method, which aim to solve the problems of the existing equipment and process for printing a nano optical micro texture structure.
The invention provides a micro-structure copying connection line gravure printing machine which comprises an unreeling system, a nano-optical micro-structure copying system, a fixed-length control system, at least two groups of gravure printing systems and a reeling system which are sequentially arranged along a material conveying direction, wherein the nano-optical micro-structure copying system is provided with a nano-optical micro-structure copying roller for heating and imprinting nano-optical texture images on a film material, each group of gravure printing systems is provided with a gravure printing roller for gravure printing the image on the film material after being imprinted, and the fixed-length control system is used for adjusting the length of the film material between the nano-optical micro-structure copying system and the gravure printing system adjacent to the nano-optical micro-structure copying system.
As a further improvement, the unreeling system comprises an unreeling air expansion shaft, a constant tension control shaft and a plurality of guide rollers, the unreeling air expansion shaft is used for placing the thin film materials, the unreeling air expansion shaft and the constant tension control shaft are provided with the plurality of guide rollers, and the constant tension control shaft controls the tension of the conveyed thin film materials and keeps the tension of the thin film materials constant.
The nano optical microstructure replication system comprises a replication traction system, a nano microstructure replication roller, a silicon rubber roller, a cooling roller and a plurality of guide rollers, wherein the replication traction system comprises a preheating traction roller and a cooling traction roller, a nano microstructure texture nickel plate is installed on the nano microstructure replication roller, a nano microstructure metal nickel plate is coated on the nano microstructure replication roller in a hanging plate mode, the nano microstructure replication roller is used for hot-pressing replication of a film material, and the preheating traction roller is arranged at the front end of the nano microstructure replication roller.
As a further improvement, the microstructure replication roller is provided with at least one mark point formed on the film for calibration, and the mark point is arranged along the circumferential direction of the microstructure replication roller; at least one detection light source and at least one detection light source receiving device corresponding to the detection light source are arranged between the microstructure replication system and the first group of intaglio printing systems; the detection light source receiving device comprises a color code sensor and a computer system; the color code sensor is in data connection with a computer system; the fixed-length control driving device is in data connection with a computer system; the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the mark point and received by the color mark sensor; then the color mark sensor generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for controlling the working state of the fixed-length control driving device and controlling the movement of the moving part of the fixed-length control driving device.
As a further improvement, the gravure printing system comprises a guide roller, a material basin, a gravure printing roller, a hot air drying box and a printing cooling roller, the film transfers the corresponding gravure printing ink to the film under the action of the gravure printing roller, and the film enters the hot air drying box through the guide roller after leaving the gravure printing roller.
As a further improvement, the gravure roll is provided with at least one gravure mark point formed on the film for calibration, the gravure mark point being arranged in the circumferential direction of the gravure roll.
As a further improvement, detection light source receiving devices are arranged at the rear ends of the second gravure printing roller and the subsequent gravure printing roller which are arranged along the material conveying direction, and each detection light source receiving device comprises a color code sensor and a computer system; the color code sensor is in data connection with a computer system; the color register control driving device is in data connection with a computer system, and the color mark sensor generates a signal after comparing and calculating the distance between adjacent gravure printing mark points and transmits the signal to the computer system.
As a further improvement, the fixed-length adjusting system comprises a fixed-length control traction roller and a fixed-length control driving device; the fixed-length control driving device is provided with a moving part which is positioned in front of the gravure printing system and can control the forward and backward movement of the film material; the fixed-length control traction roller is arranged on the moving part.
As a further refinement, the pitch control system is located between the nano-optical microstructure replication system and the gravure printing system adjacent to the nano-optical microstructure replication system.
As a further improvement, a color register control system for performing color register control on images printed by the intaglio printing systems aiming at microstructure images generated by the nano-optical microstructure replication system is arranged between the adjacent intaglio printing systems, and the color register control system comprises a color register control driving device; and the color register control driving device is provided with a photoelectric sensor for calculating and comparing the distance between the Mark points after gravure printing.
As a further improvement, the winding system comprises a winding shaft, and a winding traction motion system is arranged between the second group of gravure printing rollers and the winding shaft; the rolling traction movement system comprises a rolling traction roller and a traction movement device.
Another objective of the present invention is to provide a method for producing a microstructure replication link, comprising the following steps:
according to the nano microstructure texture images, the nano microstructure copy plate and the gravure printing plate are sequentially and respectively arranged on the nano microstructure copy roller and the gravure printing roller according to the printing color sequence, the number of the gravure printing plates is at least two, and the positions of the images on the nano microstructure copy plate and the gravure printing plate are corresponding and the directions of the images are consistent;
the film material enters a nano optical microstructure copying system under the condition of keeping a stable tension state, and enters a nano microstructure copying roller after being preheated, a nano microstructure texture image on a nano microstructure metal nickel plate is impressed on the film material, and the film is calibrated by a mark point on the nano microstructure copying roller; cooling and shaping the imprinted film to obtain a nano microstructure texture image with stable spacing;
the film material enters a first printing position, the distance between the nano microstructure texture images on the film material is calculated according to the detected nano microstructure mark points on the film material, tracking nesting is carried out, and the film material enters a gravure printing system in the same length after fixed length control; a gravure printing roller in the gravure printing system transfers gravure printing ink into a film material and prints mark points on the film, then the film material is dried and solidified, and then is cooled to obtain gravure printing images with stable spacing;
and (3) the film material enters the next printing position, a gravure printing roller in the next gravure printing system transfers gravure printing ink into the film material and prints mark points on the film, the distance between two adjacent mark points is detected and calculated after the film material leaves the printing position, color register control is carried out, the gravure printing roller is fed back and driven to keep the distance between the two mark points constant, then the film material is dried and solidified, and then the film material is cooled to obtain a gravure printing image with stable distance.
As a further improvement, when the film material is preheated, heat conducting oil is respectively introduced into a first group of nano-microstructure replication rollers and a preheating traction roller to heat, so that the temperature of the traction preheating roller is kept within the range of 100-120 ℃, the temperature of a nano-microstructure metal nickel plate on the nano-microstructure replication roller is kept within the range of 150-180 ℃, and when the imprinted film is cooled and shaped, cooling liquid is introduced into the cooling roller and the cooling traction roller to carry out refrigeration and cooling, so that the temperatures of the cooling roller and the cooling traction roller are controlled within the range of 15-20 ℃.
As a further improvement, when the film material with the transferred ink is dried and cured, the film material is sent into a hot air drying box, and the gravure printing ink transferred on the film material is quickly dried and cured under the temperature and air convection action of the hot air drying box.
As a further improvement, after the last gravure printing image is finished, the film material enters a rolling system to be rolled, and the whole production process is finished.
As a further improvement, the tracking register mode in the first printing position is as follows: the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the mark point and received by the color mark sensor; then the color mark sensor generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for controlling the working state of the fixed-length control driving device and controlling the movement of the moving part of the fixed-length control driving device.
As a further improvement, the color register control comprises the following steps: after the color mark sensors detect gravure printing mark points of two adjacent groups of gravure printing systems, two detected mark point signals are simultaneously transmitted to the computer system, and after the computer system calculates the distance between the two mark points, the computer system drives the third group of gravure printing rollers to keep the distance error between the two mark points within +/-0.1 mm.
The technical scheme of the invention has the beneficial effects that: by implementing the method, the stable plate distance can be formed by the materials between the nano optical microstructure copying system and the gravure printing system, the nano microstructure texture images and the gravure printing images with stable space distance are obtained, the positioning is more accurate, the online and real-time tracking, adjustment and alignment can be carried out, the color register and positioning of the images are accurate, the deformation of the film in the production process is small, the flatness is good, the produced film material can meet the high-quality requirement, and the method can continue more gravure printing color groups, and the application is wider.
Drawings
FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a detection light source and a detection light source receiving device according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-unwinding an inflatable shaft; 2-guide roller 3-constant tension control shaft; 4-preheating a traction roller; 5-drawing the rubber-pressing roller; 6-a nano-microstructure replication roller; 7-a silicone rubber roller; 8-a cooling roll; 9-cooling the traction roller; 10-a glue pressing roller;
11-a guide roller; 12-a guide roller; 13-a glue pressing roller; 14-fixed length drawing roller; 15-guide rollers; 16-a color patch sensor; 17-printing rubber rollers; 18-a gravure roll; 19-a material basin; 20-guide rollers; 21-hot air drying oven; 22-guide rollers; 23-a chill roll; 24-a guide roller;
25-a guide roller; 26-a guide roller; 27-printing rubber roller; 28-gravure roll; 29-a bowl; 30-a guide roller; 31-a color patch sensor; 32-hot air drying oven; 33-guide rollers; 34-a chill roll;
35-guide rollers; 36-a guide roller; 37-a glue roller; 38-a pulling roll; 39 guide rollers; 40-constant tension control; 41-guide rollers; 42-guide rollers; 43-rolling the air expansion shaft; 44-mark point; 45-mark point.
Detailed Description
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Example one
As shown in fig. 1, a first embodiment of the present invention provides a micro-structure replication line gravure printing machine, which can be used for performing a two-color gravure printing operation, and includes an unwinding system, a nano-optical micro-structure replication system, a fixed-length control system, a first group of gravure printing systems, a second group of gravure printing systems, and a winding system, which are sequentially arranged along a material conveying direction, wherein the nano-optical micro-structure replication system is provided with a nano-optical micro-structure replication roller for heating and imprinting a nano-optical texture image on a thermoplastic film, the first group of gravure printing systems and the second group of gravure printing systems are both gravure printing systems, the first group of gravure printing systems is provided with a first gravure printing roller for gravure printing an image on a film material with an imprinted image, the second group of gravure printing systems is provided with a second gravure printing roller for gravure printing an image on a film with an imprinted image and printed with a single color, the fixed-length control system is used to adjust the length of the film material between the nano-optical microstructure replication system and the first set of gravure printing systems. The continuity of micro-nano structure combined printing is completed through the nano optical microstructure copying system, the first group of intaglio printing systems and the second group of intaglio printing systems which are sequentially arranged on the production line, so that the accuracy of positioning and overprinting of the nano optical microstructure texture line intaglio printing is effectively improved, and the production efficiency is greatly improved.
In the above embodiment, the unwinding system comprises an unwinding air expansion shaft, a constant tension control shaft and a plurality of guide rollers, the unwinding air expansion shaft is used for placing the film material, the plurality of guide rollers are arranged between the unwinding air expansion shaft and the constant tension control shaft, and the constant tension control shaft controls the tension of the conveyed film material and keeps the tension constant, so that the reduction of the subsequent printing precision is avoided;
the nano optical microstructure replication system comprises a replication traction system, a nano microstructure replication roller, a silicon rubber roller, a cooling roller and a plurality of guide rollers, wherein the replication traction system comprises a preheating traction roller and a cooling traction roller, the nano microstructure replication roller is provided with a nano microstructure texture nickel plate, the nano microstructure metal nickel plate is coated on the nano microstructure replication roller in a hanging plate mode, the nano microstructure replication roller is used for hot-pressing replication of a thin film material, the nano microstructure replication roller is provided with one or more mark points formed on the thin film material for calibration, the mark points are arranged along the circumference direction of the nano microstructure replication roller, the preheating traction roller is arranged at the front end of the nano microstructure replication roller and is used for preheating the thin film material, a traction pressure rubber roller is arranged at the lower end of the preheating traction roller, and the cooling traction roller can be used for cooling and shaping the thin film material, therefore, the film material forms a stable plate distance, the subsequent printing accuracy is improved, the copying glue pressing roller is arranged at the upper end of the cooling traction roller, and the film material can be better subjected to traction operation by matching the traction glue pressing roller with the preheating traction roller and matching the copying glue pressing roller with the cooling traction roller.
The fixed-length adjusting system comprises a fixed-length control traction roller and a fixed-length control driving device; the fixed-length control driving device is provided with a moving part which is positioned in front of the gravure printing system and can control the forward and backward movement of the film material; the fixed-length control traction roller is arranged on the moving part;
a fixed-length control system for adjusting the length of the film material between the nano optical microstructure copying system and the intaglio printing system is also arranged between the nano optical microstructure copying system and the first group of intaglio printing systems; the second group of intaglio printing systems are also provided with a color register control system for performing color register control on the first group of intaglio printing images and the second group of intaglio printing images aiming at the microstructure images generated by the nano-optical microstructure copying system; the color register control system comprises a color register control driving device; the color register control driving device is provided with a photoelectric sensor for calculating and comparing the distance between the Mark points after gravure printing;
the microstructure replication roller is provided with one or more mark points which are formed on the film and used for calibration, the mark points are arranged along the circumferential direction of the microstructure replication roller, and at least one detection light source receiving device corresponding to the detection light source are arranged between the microstructure replication system and the first group of intaglio printing systems; the detection light source receiving device comprises a color code sensor and a computer system; the color code sensor is in data connection with a computer system; the fixed-length control driving device is in data connection with a computer system; the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the mark point and received by the color mark sensor; then the color mark sensor generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for controlling the working state of the fixed-length control driving device and controlling the movement of the moving part of the fixed-length control driving device.
The first group of gravure printing systems and the second group of gravure printing systems comprise guide rollers, material basins, gravure printing rollers, hot air drying boxes and printing cooling rollers, the films transfer printing ink corresponding to the films onto the films under the acting force of the gravure printing rollers, and the films enter the hot air drying boxes through the guide rollers after leaving the gravure printing rubber rollers;
the first group of gravure printing rollers are provided with a plurality of gravure printing mark points which are formed on the film and used for calibrating points, and the gravure printing mark points are arranged along the circumferential direction of the first group of gravure printing rollers; the second group of gravure printing rollers are provided with a plurality of gravure printing mark points formed on the film for calibrating points, and the gravure printing mark points are arranged along the circumferential direction of the second group of gravure printing rollers; the rear end of the second group of gravure printing rollers is also provided with a detection light source receiving device; the detection light source receiving device comprises a color code sensor and a computer system; the color code sensor is in data connection with a computer system; the color register control driving device is in data connection with a computer system; the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the first group of intaglio printing mark points and the second group of intaglio printing mark points and is received by the color mark sensor; then the color mark sensor compares the distance between the first group of intaglio printing mark points and the second group of intaglio printing mark points to calculate, generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for the working state of the intaglio printing driving device and controls the movement of a moving part of the intaglio printing driving device;
the winding system comprises a winding shaft, and a winding traction motion system is arranged between the second group of gravure printing rollers and the winding shaft; the rolling traction movement system comprises a rolling traction roller and a traction movement device, the film enters the rolling system for rolling through a guide roller after coming out of the second group of intaglio printing systems, and the whole production process is finished.
Example two
As shown in fig. 1, a first embodiment of the present invention provides a micro-structure replication line intaglio printing press, which may be used to perform a two-color intaglio printing operation, and includes an unwinding system, a nano-optical micro-structure replication system, a fixed-length control system, a first group of intaglio printing systems, a second group of intaglio printing systems, a third group of intaglio printing systems, and a winding system, which are sequentially arranged along a material conveying direction, wherein the nano-optical micro-structure replication system is provided with a nano-optical micro-structure replication roller for heating and imprinting a nano-optical texture image on a thermoplastic film, and the first, second, and third groups of intaglio printing systems are all intaglio printing systems, the first group of intaglio printing system is provided with a first intaglio printing roller for intaglio printing an image on a film material with an imprinted image, and the second group of intaglio printing system is provided with a second intaglio printing roller for intaglio printing an image on a film with an imprinted image and printed with a single color The third group of gravure printing systems are provided with a third gravure printing roller for gravure printing images on films which are used for impressing the images and printed with two colors, and the fixed-length control system is used for adjusting the length of the film material between the nano optical microstructure copying system and the first group of gravure printing systems. The continuity of micro-nano structure combined printing is completed through the nano optical microstructure copying system, the first group of intaglio printing systems, the second group of intaglio printing systems and the third group of intaglio printing systems which are sequentially arranged on the production line, so that the positioning and overprinting accuracy of the nano optical microstructure texture connection line intaglio printing is effectively improved, and the production efficiency is greatly improved.
In the above embodiment, the unwinding system comprises an unwinding air expansion shaft, a constant tension control shaft and a plurality of guide rollers, the unwinding air expansion shaft is used for placing the film material, the plurality of guide rollers are arranged between the unwinding air expansion shaft and the constant tension control shaft, and the constant tension control shaft controls the tension of the conveyed film material and keeps the tension constant, so that the reduction of the subsequent printing precision is avoided;
the nano optical microstructure replication system comprises a replication traction system, a nano microstructure replication roller, a silicon rubber roller, a cooling roller and a plurality of guide rollers, wherein the replication traction system comprises a preheating traction roller and a cooling traction roller, the nano microstructure replication roller is provided with a nano microstructure texture nickel plate, the nano microstructure metal nickel plate is coated on the nano microstructure replication roller in a hanging plate mode, the nano microstructure replication roller is used for hot-pressing replication of a thin film material, the nano microstructure replication roller is provided with one or more mark points formed on the thin film material for calibration, the mark points are arranged along the circumference direction of the nano microstructure replication roller, the preheating traction roller is arranged at the front end of the nano microstructure replication roller and is used for preheating the thin film material, a traction pressure rubber roller is arranged at the lower end of the preheating traction roller, and the cooling traction roller can be used for cooling and shaping the thin film material, therefore, the film material forms a stable plate distance, the subsequent printing accuracy is improved, the copying glue pressing roller is arranged at the upper end of the cooling traction roller, and the film material can be better subjected to traction operation by matching the traction glue pressing roller with the preheating traction roller and matching the copying glue pressing roller with the cooling traction roller.
The fixed-length adjusting system comprises a fixed-length control traction roller and a fixed-length control driving device; the fixed-length control driving device is provided with a moving part which is positioned in front of the gravure printing system and can control the forward and backward movement of the film material; the fixed-length control traction roller is arranged on the moving part;
a fixed-length control system for adjusting the length of the film material between the nano optical microstructure copying system and the intaglio printing system is also arranged between the nano optical microstructure copying system and the first group of intaglio printing systems; the second group of intaglio printing systems are also provided with a color register control system for performing color register control on the first group of intaglio printing images and the second group of intaglio printing images aiming at the microstructure images generated by the nano-optical microstructure copying system; the color register control system comprises a color register control driving device; the color register control driving device is provided with a photoelectric sensor for calculating and comparing the distance between the Mark points after gravure printing;
the microstructure replication roller is provided with one or more mark points which are formed on the film and used for calibration, the mark points are arranged along the circumferential direction of the microstructure replication roller, and at least one detection light source receiving device corresponding to the detection light source are arranged between the microstructure replication system and the first group of intaglio printing systems; the detection light source receiving device comprises a color code sensor and a computer system; the color code sensor is in data connection with a computer system; the fixed-length control driving device is in data connection with a computer system; the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the mark point and received by the color mark sensor; then the color mark sensor generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for controlling the working state of the fixed-length control driving device and controlling the movement of the moving part of the fixed-length control driving device.
The first group of gravure printing systems, the second group of gravure printing systems and the third group of gravure printing systems comprise guide rollers, material basins, gravure printing rollers, hot air drying boxes and printing cooling rollers, the films transfer printing ink corresponding to the films onto the films under the acting force of the gravure printing rollers, and the films enter the hot air drying boxes through the guide rollers after leaving the gravure printing rollers;
the first group of gravure printing rollers are provided with a mark point formed on the film for calibration, and the mark point is arranged along the circumferential direction of the first group of gravure printing rollers; the second group of gravure printing rollers are provided with mark points formed on the film for calibration, and the mark points are arranged along the circumferential direction of the second group of gravure printing rollers; the third group of gravure printing rollers are provided with mark points formed on the film for calibration, and the mark points are arranged along the circumferential direction of the third group of gravure printing rollers; a detection light source receiving device is also arranged behind the third group of gravure printing rollers; the detection light source receiving device comprises a color code sensor and a computer system; the color code sensor is in data connection with a computer system; the color register control driving device is in data connection with a computer system; the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the first group of intaglio printing mark points and the second group of intaglio printing mark points and is received by the color mark sensor; then the color mark sensor compares the distance between the first group of intaglio printing mark points and the second group of intaglio printing mark points to calculate, generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for the working state of the intaglio printing driving device and controls the movement of a moving part of the intaglio printing driving device;
the winding system comprises a winding shaft, and a winding traction motion system is arranged between the third group of gravure printing rollers and the winding shaft; the rolling traction movement system comprises a rolling traction roller and a traction movement device, the film enters the rolling system for rolling through a guide roller after coming out of the third group of intaglio printing systems, and the whole production process is finished.
As another embodiment, the difference from the second embodiment is that a fourth, fifth or more groups of intaglio printing systems may be inserted before the winding system after the third group of intaglio printing systems, and the entire intaglio line printing system is incorporated following the tracking register mode of the second and third groups of intaglio printing systems, so as to complete the printing operation with more color numbers and different color sequences.
The embodiment of the invention also provides a microstructure copying and connecting line printing method based on the microstructure copying and connecting line gravure printing machine, which takes the nano microstructure copying and two-color gravure printing of a PET base film as an example, and the method can refer to the following process steps:
a preparation stage:
before the PET base film enters the nano microstructure connection line gravure printing machine, the nano optical microstructure copying system, the second group of gravure printing systems and the third group of gravure printing systems are ready to be prepared, the nano microstructure metal nickel plate is coated on the nano microstructure copying roller 6 in a hanging plate mode, the pre-processed two-color gravure printing plates are sequentially and respectively arranged on the second group of gravure printing rollers 18 and the third group of gravure printing rollers 28 according to printing color sequences, and the positions of images on the nano microstructure metal nickel plate, the second group of gravure printing plates and the third group of gravure printing plates are corresponding and the directions are consistent. The heat conducting oil is respectively introduced into the first group of the nano-microstructure replication rollers 6 and the preheating traction roller 5 for heating, so that the temperature of the traction preheating roller 5 is kept within the range of 100-120 ℃, and the temperature of the nano-microstructure metal nickel plate on the nano-microstructure replication rollers 6 is kept within the range of 150-180 ℃. Cooling liquid is introduced into the cooling roller 8 and the cooling traction roller 9 for refrigeration cooling, so that the temperature of the two rollers is controlled within the range of 15-20 ℃. The ink to be subjected to gravure printing is poured into the material trays 19/29 of the second group of gravure printing systems and the third group of gravure printing systems respectively according to the color requirement of the product, and the gravure printing scraper is adjusted to scrape off the excess gravure printing ink so that the gravure printing ink is uniformly distributed in the cells of the gravure printing plate.
The production stage comprises:
according to the parameters of the size and the space of the nano microstructure texture image on the nano microstructure metal nickel plate, a PET base film with proper thickness is selected, the PET base film is placed on the unreeling air expansion shaft 1, and the PET base film stably enters the nano optical microstructure copying system through the unreeling system under the condition of keeping stable tension. The PET base film enters a preheating drawing roller 5 through a plurality of guide rollers 2 in sequence in a nano optical microstructure copying system, the PET base film enters a nano microstructure copying roller 6 after being preheated through the preheating drawing roller 5, then a silicon rubber roller 7 and a cooling roller 8 are driven by a hydraulic device to be close to the nano microstructure copying roller 6, the PET base film is pressed on the nano microstructure copying roller, at the moment, nano microstructure texture images on a nano microstructure metal nickel plate are impressed on the PET base film, then the PET base film leaves the nano microstructure copying roller and enters a cooling drawing roller 9, and the cooling drawing roller 9 rapidly cools and shapes the PET base film to enable the PET base film to obtain nano microstructure texture images with stable intervals.
The PET base film passes through a guide roller 11 and a guide roller 12 in sequence after coming out of the cooling traction roller 9 and enters a fixed length control system. A patch sensor 16 in the definite length control system is located intermediate the definite length control pull roll 14 and the second set of gravure rolls 18. After entering the fixed-length control traction roller, the PET base film is pressed close to the fixed-length control traction roller 14 by the glue pressing roller 13 under the action of the air cylinder, so that the PET base film is pressed with the fixed-length control traction roller 14, the PET base film leaves the fixed-length control traction roller 14 and then enters the color mark sensor 16 through the guide roller 15, the color mark sensor 16 sends a signal to the computer system after detecting a nano microstructure mark point 44 on the PET base film, the computer system receives the signal sent by the color mark sensor 16 and then calculates the distance of nano microstructure texture images on the PET base film according to the received signal, and drives the fixed-length control traction roller 14, so that the PET base film enters a second group of gravure printing systems at;
the PET base film is discharged from the fixed-length control traction roller and then enters the second group of gravure printing rollers 18 through the guide roller 15, and the printing rubber roller 17 is driven by the cylinder to be close to the second group of gravure printing rollers 18, so that the PET base film is pressed with the second group of gravure printing rollers 18. The PET base film transfers the gravure ink on the second set of gravure rolls 18 to the PET base film under the force of the print blanket roll 17. After leaving the second group of gravure printing rollers 18, the PET base film enters a hot air drying box 21 through a guide roller 20, gravure printing ink transferred on the PET base film is dried and cured quickly under the action of the temperature and quick air convection of the hot air drying box 21, after leaving the hot air drying box 21, the PET base film enters a cooling roller 23 through a guide roller 22, and the cooling roller 23 is used for cooling and shaping the PET base film quickly, so that the PET base film obtains gravure printing images with stable intervals;
the PET base film leaves the chill roll 23 and passes through guide roll 24 and guide roll 25 in sequence into the third gravure printing system. The color patch sensors 31 in the third set of gravure printing systems are behind the third set of gravure rollers 28. After the PET base film enters the third group of gravure printing rollers 28, the printing rubber roller 27 is driven by the cylinder to be close to the third group of gravure printing rollers 28, so that the PET base film and the third group of gravure printing rollers are pressed together. The PET base film transfers the gravure ink on the third set of gravure rollers 28 to the PET base film under the force of the print blanket roller 27. The PET base film passes through the color mark sensor 31 after leaving the third group of gravure rolls, and after the color mark sensor 31 detects the second group of gravure mark points 44 and the third group of gravure mark points 45, simultaneously, the detected signals of the two mark points are transmitted to a computer system, after the computer system calculates the distance between the two mark points, the computer system drives the third group of gravure printing rollers to enable the distance between the two mark points to be kept within 20mm +/-0.1 mm, the PET base film leaves the color mark sensor 31 and enters the hot air drying box 32 through the guide roller 30, gravure printing ink transferred on the PET base film is dried and cured quickly under the action of the temperature and air convection of the hot air drying box 32, the PET base film leaves the hot air drying box 32 and then enters the cooling roller 34 through the guide roller 33, and the cooling roller 34 cools and shapes the PET base film quickly to enable the PET base film to obtain gravure printing images with stable distance. And after the third group of intaglio printing systems, the paper enters a rolling system for rolling through a guide roller 35 and a guide roller 36, and the whole production process is finished.
Similarly, the microstructure replication inline printing method of the present invention is not limited to the above embodiments, and for the printing production with more color register requirements, according to this method, more gravure printing color sets can be continued by analogy, a fourth, fifth or more gravure printing systems can be inserted after the third gravure printing system before the winding shaft, and the whole gravure inline printing system can be incorporated following the tracking register pattern of the second and third gravure printing systems, and still the production can be precisely positioned and rapidly completed.
The image color register printed by the printing method of the embodiment of the invention is accurate in positioning, the deformation of the film is small in the production process, the flatness is good, and the produced film material can meet the high-quality requirement.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (17)
1. The micro-structure copying and connecting line photogravure press is characterized by comprising an unreeling system, a nano-optical micro-structure copying system, a fixed-length control system, at least two groups of photogravure printing systems and a reeling system which are sequentially arranged along a material conveying direction, wherein the nano-optical micro-structure copying system is provided with a nano-optical micro-structure copying roller for heating and imprinting nano-optical texture images on a film material, each group of photogravure printing systems is provided with a photogravure printing roller for photogravure printing the film material with the imprinted images, and the fixed-length control system is used for adjusting the length of the film material between the nano-optical micro-structure copying system and the photogravure printing system adjacent to the nano-optical micro-structure copying system.
2. A microstructured replication line gravure printing press according to claim 1, wherein: the unreeling system comprises an unreeling air expansion shaft, a constant tension control shaft and a plurality of guide rollers, the unreeling air expansion shaft is used for placing the thin film materials, the unreeling air expansion shaft and the constant tension control shaft are provided with the guide rollers, and the constant tension control shaft controls the tension of the conveyed thin film materials and keeps the tension of the thin film materials constant.
3. A microstructured replication line intaglio printing press according to claim 2, characterized in that: the nano optical microstructure replication system comprises a replication traction system, a nano microstructure replication roller, a silicon rubber roller, a cooling roller and a plurality of guide rollers, wherein the replication traction system comprises a preheating traction roller and a cooling traction roller, a nano microstructure texture nickel plate is installed on the nano microstructure replication roller, the nano microstructure metal nickel plate is coated on the nano microstructure replication roller in a hanging plate mode, the nano microstructure replication roller is used for hot-pressing replication of a film material, and the preheating traction roller is arranged at the front end of the nano microstructure replication roller.
4. A microstructured replication line intaglio printing press according to claim 3, characterized in that: the microstructure replication roller is provided with at least one mark point formed on the film for calibration, and the mark points are arranged along the circumferential direction of the microstructure replication roller; at least one detection light source and at least one detection light source receiving device corresponding to the detection light source are arranged between the microstructure replication system and the first group of intaglio printing systems; the detection light source receiving device comprises a color code sensor and a computer system; the color code sensor is in data connection with a computer system; the fixed-length control driving device is in data connection with a computer system; the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the mark point and received by the color mark sensor; then the color mark sensor generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for controlling the working state of the fixed-length control driving device and controlling the movement of the moving part of the fixed-length control driving device.
5. The micro-structured replication line gravure printing press according to claim 4, wherein: the gravure printing system comprises a guide roller, a material basin, a gravure printing roller, a hot air drying box and a printing cooling roller, wherein the film transfers corresponding gravure printing ink to the film under the acting force of the gravure printing roller, and the film enters the hot air drying box through the guide roller after leaving the gravure printing roller.
6. The micro-structured replication line gravure printing press according to claim 5, wherein: the gravure roll is provided with at least one gravure mark point formed on the film for calibration, the gravure mark point being arranged in a circumferential direction of the gravure roll.
7. The micro-structured replication line gravure printing press according to claim 6, wherein: the rear ends of a second gravure printing roller and the rear gravure printing roller which are arranged along the material conveying direction are provided with detection light source receiving devices, and the detection light source receiving devices comprise color code sensors and a computer system; the color code sensor is in data connection with a computer system; the color register control driving device is in data connection with a computer system, and the color mark sensor generates a signal after comparing and calculating the distance between adjacent gravure printing mark points and transmits the signal to the computer system.
8. A microstructured replication wiring intaglio printing press according to any of the claims from 1 to 7, characterized in that: the fixed-length adjusting system comprises a fixed-length control traction roller and a fixed-length control driving device; the fixed-length control driving device is provided with a moving part which is positioned in front of the gravure printing system and can control the forward and backward movement of the film material; the fixed-length control traction roller is arranged on the moving part.
9. The micro-structured replication line gravure printing press according to claim 8, wherein: the fixed-length control system is positioned between the nano-optical microstructure replication system and the gravure printing system adjacent to the nano-optical microstructure replication system.
10. A microstructured replication line gravure printing press according to claim 9, wherein: a color register control system for performing color register control on images printed by the intaglio printing system aiming at the microstructure images generated by the nano optical microstructure replication system is arranged between the adjacent intaglio printing systems, and the color register control system comprises a color register control driving device; and the color register control driving device is provided with a photoelectric sensor for calculating and comparing the distance between the Mark points after gravure printing.
11. A microstructured replication line gravure printing press according to claim 10, wherein: the winding system comprises a winding shaft, and a winding traction motion system is arranged between the second group of gravure printing rollers and the winding shaft; the rolling traction movement system comprises a rolling traction roller and a traction movement device.
12. A microstructure replication wiring printing method based on the microstructure replication wiring intaglio printing press according to claims 1 to 11, characterized by comprising the steps of:
according to the nano microstructure texture images, the nano microstructure copy plate and the gravure printing plate are sequentially and respectively arranged on the nano microstructure copy roller and the gravure printing roller according to the printing color sequence, the number of the gravure printing plates is at least two, and the positions of the images on the nano microstructure copy plate and the gravure printing plate are corresponding and the directions of the images are consistent;
the film material enters a nano optical microstructure copying system under the condition of keeping a stable tension state, and enters a nano microstructure copying roller after being preheated, a nano microstructure texture image on a nano microstructure metal nickel plate is impressed on the film material, and the film is calibrated by a mark point on the nano microstructure copying roller; cooling and shaping the imprinted film to obtain a nano microstructure texture image with stable spacing;
the film material enters a first printing position, the distance between the nano microstructure texture images on the film material is calculated according to the detected nano microstructure mark points on the film material, tracking nesting is carried out, and the film material enters a gravure printing system in the same length after fixed length control; a gravure printing roller in the gravure printing system transfers gravure printing ink into a film material and prints mark points on the film, then the film material is dried and solidified, and then is cooled to obtain gravure printing images with stable spacing;
and (3) the film material enters the next printing position, a gravure printing roller in the next gravure printing system transfers gravure printing ink into the film material and prints mark points on the film, the distance between two adjacent mark points is detected and calculated after the film material leaves the printing position, color register control is carried out, the gravure printing roller is fed back and driven to keep the distance between the two mark points constant, then the film material is dried and solidified, and then the film material is cooled to obtain a gravure printing image with stable distance.
13. A microstructure replication wiring printing method based on the microstructure replication wiring intaglio printing press according to claim 12, characterized in that: when the film material is preheated, heat conducting oil is respectively introduced into the first group of nano-microstructure replication rollers and the preheating traction roller to heat, so that the temperature of the traction preheating roller is kept within the range of 100-120 ℃, the temperature of a nano-microstructure metal nickel plate on the nano-microstructure replication rollers is kept within the range of 150-180 ℃, and when the imprinted film is cooled and shaped, cooling liquid is introduced into the cooling rollers and the cooling traction roller to carry out refrigeration and cooling, so that the temperatures of the cooling rollers and the cooling traction roller are controlled within the range of 15-20 ℃.
14. A microstructure replication wiring printing method based on the microstructure replication wiring intaglio printing press according to claim 12, characterized in that: when the film material with the transferred printing ink is dried and cured, the film material is sent into a hot air drying box, and the gravure printing ink transferred on the film material is quickly dried and cured under the action of the temperature and air convection of the hot air drying box.
15. A microstructure replication wiring printing method based on the microstructure replication wiring intaglio printing press according to claim 12, characterized in that: and after the last gravure printing image is finished, the film material enters a rolling system to be rolled, and the whole production process is finished.
16. A microstructure replication wiring printing method based on the microstructure replication wiring intaglio printing press as claimed in claim 12, wherein the tracking register manner in the first printing position is: the light beam emitted by the detection light source irradiates on the film, and the light beam is radiated to the color mark sensor through the mark point and received by the color mark sensor; then the color mark sensor generates a signal and transmits the signal to the computer system, and the computer system processes the signal to generate a control signal for controlling the working state of the fixed-length control driving device and controlling the movement of the moving part of the fixed-length control driving device.
17. A microstructure replication wiring printing method based on the microstructure replication wiring intaglio printing press as claimed in claim 12, wherein the color register control step is: after the color mark sensors detect gravure printing mark points of two adjacent groups of gravure printing systems, two detected mark point signals are simultaneously transmitted to the computer system, and after the computer system calculates the distance between the two mark points, the computer system drives the third group of gravure printing rollers to keep the distance error between the two mark points within +/-0.1 mm.
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| CN201910996617.6A CN110614840A (en) | 2019-10-19 | 2019-10-19 | Microstructure copying line intaglio printing press and copying line intaglio printing method thereof |
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| CN201910996617.6A CN110614840A (en) | 2019-10-19 | 2019-10-19 | Microstructure copying line intaglio printing press and copying line intaglio printing method thereof |
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Cited By (1)
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