CN111923620A - High-speed gravure printing method - Google Patents
High-speed gravure printing method Download PDFInfo
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- CN111923620A CN111923620A CN202010732225.1A CN202010732225A CN111923620A CN 111923620 A CN111923620 A CN 111923620A CN 202010732225 A CN202010732225 A CN 202010732225A CN 111923620 A CN111923620 A CN 111923620A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000007646 gravure printing Methods 0.000 title claims abstract description 27
- 238000007639 printing Methods 0.000 claims abstract description 115
- 230000005540 biological transmission Effects 0.000 claims abstract description 90
- 238000001035 drying Methods 0.000 claims abstract description 74
- 238000007599 discharging Methods 0.000 claims abstract description 58
- 239000000758 substrate Substances 0.000 claims abstract description 51
- 238000012360 testing method Methods 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000001680 brushing effect Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 15
- 239000013307 optical fiber Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 24
- 230000009471 action Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010020 roller printing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/008—Mechanical features of drives, e.g. gears, clutches
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- 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
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
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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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention belongs to the technical field of printing machines, and particularly relates to a high-speed gravure printing method which comprises the following steps: s1, unreeling and feeding, wherein the automatic unreeling machine carries out feeding at a set speed; s2, testing the tension of the first discharging, detecting the tension of the printing substrate in real time, and adjusting the feeding speed of the discharging traction mechanism according to the comparison result of the real-time tension and the preset tension value; s3, improving the feeding speed and the transmission stability according to the tension test structure, wherein the speed of the first power roller conveyor is 260-300 m/min; s4, printing, namely, brushing ink on the surface of the ink stick by adjusting the angle of the doctor blade, and printing after the ink stick is aligned with the printing mark of the printing substrate; s5, drying the printed substrate passing through S4 through a drying box at the temperature of 300-400 ℃; the invention has scientific and reasonable structural design, wherein the steps S2-S10 are circularly carried out more than two times according to the requirements of finished patterns, thereby realizing the use method of the gravure printing machine for high-speed multi-time printing.
Description
Technical Field
The invention relates to the technical field of printing machines, in particular to a high-speed gravure printing method.
Background
The high-speed intaglio press is a printing machine, its main characteristic is quick, high efficiency, and can reduce a large amount of time in the course of printing, and is a high-efficiency printing equipment. The main transmission drives the unit plate rollers to synchronously rotate through gears to finish printing action, then the printing plate rollers are quickly dried through the heating drying box and the natural drying box, finally the printing plate rollers are taken out through the winding device, and the whole process is controlled by an industrial computer and automatically regulated.
The existing intaglio printing machine cannot increase the rotating speed again under the influence of roller printing in the operation process, so that the production speed of the intaglio printing machine is low, and therefore a high-speed intaglio printing method is provided.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems occurring in the prior art high speed gravure printing method.
Therefore, the invention aims to provide a high-speed gravure printing method, which can solve the problem that the conventional gravure printing machine cannot increase the rotating speed again due to the influence of roller printing in the operation process, so that the production speed of the gravure printing machine is lower.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a high-speed gravure printing process, comprising: the method comprises the following steps:
s1, unreeling and feeding, wherein the automatic unreeling machine carries out feeding at a set speed;
s2, testing the tension of the first discharging, detecting the tension of the printing substrate in real time, and adjusting the feeding speed of the discharging traction mechanism according to the comparison result of the real-time tension and the preset tension value;
s3, improving the feeding speed and the transmission stability according to the tension test structure, wherein the speed of the first power roller conveyor is 260-300 m/min;
s4, printing, namely, brushing ink on the surface of the ink stick by adjusting the angle of the doctor blade, and printing after the ink stick is aligned with the printing mark of the printing substrate;
s5, drying the printed substrate passing through S4 through a drying box at the temperature of 300-400 ℃;
s6 detecting the tension of the second discharging, wherein the second discharging tension detecting mechanism detects the tension of the printing base material processed by the step S5;
s7, positioning and detecting, namely, positioning and detecting the printing base material in the step S6 by adopting an optical fiber positioner;
s8, second printing, namely, carrying out secondary printing on the printing substrate through an ink stick to deepen the printing color depth;
s9, drying, namely drying the printed substrate passing through S8 through a drying box, wherein the temperature inside the drying box is 400-500 degrees;
s10, a second power roller conveyor, wherein the power roller conveyor improves the feeding speed and the transmission stability, and the speed of the second power roller conveyor is 260-300 m/min;
s11, cooling, and cooling the printing substrate by a cooling roller;
s12 coiling and receiving material, wherein the receiving material traction mechanism is used for coiling the printed printing base material and cutting the printing base material to obtain a finished product, and before the coiling and receiving step S12, the steps S2-S10 are carried out for more than two times in a circulating mode according to the requirements of patterns of the finished product;
and S1, unreeling and feeding, wherein the rotation speeds of the first power roller conveyor in the step S3 and the second power roller conveyor in the step S10 are the same, the current traction tension is detected in real time through the first discharging tension test in the step S2 and the second discharging tension test in the step S6, and the adjustment is realized through adjusting a tension mechanism according to the tension feedback condition of the traction tension sensing roller, so that the synchronism in the transmission process is realized.
As a preferable aspect of the high-speed gravure printing method of the present invention, wherein: the tension test of the first discharging in the step S2 includes a paper feeding roller, a brake roller, a tension detection roller and a paper outlet roller I, a first high-speed power transmission roller is arranged at the right end of the paper outlet roller I, the printing base material is adjusted in tension through the paper feeding roller, the brake roller and the tension detection roller in sequence, and the adjusted printing base material is transmitted into the first high-speed power transmission roller from the paper outlet roller I.
As a preferable aspect of the high-speed gravure printing method of the present invention, wherein: the first high-speed power driving roller of step S3 includes exit roller two, servo motor one, motor support and bearing one, first high-speed power driving roller both ends are fixed on the support of first blowing tension test through bearing one, first high-speed power driving roller left end fixed mounting is on servo motor one output, servo motor one bottom fixed mounting motor support, first high-speed power driving roller bottom is equipped with exit roller two, motor support with exit roller two fixed mounting be in on the support of first blowing tension test.
As a preferable aspect of the high-speed gravure printing method of the present invention, wherein: the first drying box of step S5 includes drive fan, heating pipe, transmission shaft and temperature sensor, first drying box both ends fixed mounting the drive fan, first drying incasement wall both sides fixed mounting heating pipe, fixed mounting transmission shaft in the middle of the first drying incasement wall, first drying box both ends fixed mounting temperature sensor, temperature sensor electric connection drive fan and heating pipe.
As a preferable aspect of the high-speed gravure printing method of the present invention, wherein: step S9 high-speed power driving roller of second stoving case output installation, the high-speed power driving roller of second includes support, servo motor two and bearing two, the high-speed power driving roller of second stoving case output fixed mounting second, the high-speed power driving roller both ends of second pass through bearing two fixed mounting on the support, the high-speed power driving roller one end fixed mounting of second is on servo motor two output, servo motor two is equipped with two sets ofly altogether, the top servo motor two counter-clockwise turning, the bottom servo motor two clockwise turning.
Compared with the prior art: the high-speed gravure printing method comprises the steps of adding a first high-speed power transmission roller after a first discharging tension test step, improving the transmission speed of a printing base material according to the tension test result and stability, adding positioning detection before second printing, positioning the second printing of the printing base material to clearly display during multiple times of printing, adding a second high-speed power transmission roller after a second drying step to improve the feeding speed and the transmission stability, and preventing the non-dried printing base material from directly contacting the second high-speed power transmission roller to cause a fuzzy phenomenon, wherein the steps S2-S10 are circularly carried out for more than two times according to the requirement of a finished product pattern, so that the use method of the gravure printing machine for high-speed multiple times of printing is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a flow chart of the operation of the present invention;
FIG. 2 is a view of the internal structure of the first discharge tension test of the present invention;
FIG. 3 is a front view of a first discharge tension test of the present invention;
FIG. 4 is a schematic view of the internal structure of the first drying box according to the present invention;
FIG. 5 is a schematic view of a first high-speed power transmission roller mounting structure of the present invention;
FIG. 6 is a schematic view of a second high-speed power transmission roller according to the present invention;
fig. 7 is a schematic view of the mounting structure of the second high-speed power transmission roller according to the present invention.
In the drawing, a first discharging tension test 100, a paper feeding roller 110, a brake roller 120, a tension detection roller 130, a paper discharging roller I140, a first high-speed power transmission roller 200, a paper discharging roller II 210, a servo motor I220, a motor bracket 221, a bearing I230, a first drying box 300, a driving fan 310, a heating pipe 320, a transmission shaft 330, a temperature sensor 340, a second drying box 400, a second high-speed power transmission roller 500, a bracket 510, a servo motor II 520 and a bearing II 530 are arranged.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1:
the present invention provides a high-speed gravure printing method, which has the advantages of increased rotation speed and clear printing, and referring to fig. 1-7, the method comprises the following steps:
s1, unreeling and feeding, wherein the automatic unreeling machine carries out feeding at a set speed;
s2, testing the tension of the first discharging, detecting the tension of the printing substrate in real time, and adjusting the feeding speed of the discharging traction mechanism according to the comparison result of the real-time tension and the preset tension value;
s3, according to the structure of the tension test, the first power roller conveyor improves the feeding speed and the transmission stability, and the speed of the first power roller conveyor is 260 m/min;
s4, printing, namely, brushing ink on the surface of the ink stick by adjusting the angle of the doctor blade, and printing after the ink stick is aligned with the printing mark of the printing substrate;
s5, drying the printed substrate passing through S4 through a drying box at the temperature of 300 degrees;
s6 detecting the tension of the second discharging, wherein the second discharging tension detecting mechanism detects the tension of the printing base material processed by the step S5;
s7, positioning and detecting, namely, positioning and detecting the printing base material in the step S6 by adopting an optical fiber positioner;
s8, second printing, namely, carrying out secondary printing on the printing substrate through an ink stick to deepen the printing color depth;
s9, drying, namely drying the printed base material passing through S8 through a drying box, wherein the temperature inside the drying box is 400 degrees;
s10, a second power roller conveyor, wherein the power roller conveyor improves the feeding speed and the transmission stability, and the speed of the second power roller conveyor is 260/min;
s11, cooling, and cooling the printing substrate by a cooling roller;
s12, coiling to collect materials, and collecting and drawing the printed printing base materials by a material collecting and drawing mechanism and cutting to obtain a finished product; before the coil receiving step S12, the steps S2-S10 are carried out more than twice according to the requirement of the finished product pattern;
s1, carrying out unreeling and feeding, wherein the rotation speeds of the first power roller conveyor in the step S3 and the second power roller conveyor in the step S10 are the same, the current traction tension is detected in real time in the step S2 first discharging tension test and the step S6 second discharging tension test, and the adjustment is realized by adjusting a tension mechanism according to the tension feedback condition of the traction tension sensing roller, so that the synchronism in the transmission process is realized;
further, the first discharging tension test in step S2 includes a paper feeding roller 110, a brake roller 120, a tension detection roller 130, and a first paper discharging roller 140, the right end of the first paper discharging roller 140 is provided with a first high-speed power transmission roller 200, the printing substrate passes through the paper feeding roller 110, the brake roller 120, and the tension detection roller 130 in sequence to perform tension adjustment, the adjusted printing substrate is transmitted from the first paper discharging roller 140 to the first high-speed power transmission roller 200, the paper feeding roller 110, the brake roller 120, the tension detection roller 130, and the first paper discharging roller 140 are externally connected with an adjuster to form a full-automatic tension controller, which can receive signals transmitted by the tension sensor, then output signals after intelligent PID no-overshoot algorithm operation processing by an internal device, adjust an execution mechanism to control the tension to adapt to the change of the roll diameter, and in addition, a high-precision D/a converter is adopted, the output precision is up to 0.1%, so that the tension control is, the first discharge tension test has a tension test effect on the printed substrate.
Further, in step S3, the first high-speed power transmission roller 200 includes a second paper output roller 210, a first servo motor 220, a motor bracket 221 and a first bearing 221, two ends of the first high-speed power transmission roller 200 are fixed on the bracket for the first material placing tension test through a first bearing 230, the left end of the first high-speed power transmission roller 200 is fixedly mounted on the output end of the first servo motor 220, the motor bracket 221 is fixedly mounted at the bottom of the first servo motor 220, the second paper output roller 210 is arranged at the bottom of the first high-speed power transmission roller 200, the motor bracket 221 and the second paper output roller 210 are fixedly mounted on the bracket for the first material placing tension test, the second paper output roller 210 has an output effect on the printing base material, the first servo motor 220 provides a power effect for the rotation of the first high-speed power transmission roller 200, the motor bracket 221 has a fixing effect on the first servo motor 220, and the first bearing 221 has a positioning effect on the first high-speed power transmission roller, the first high-speed power transmission roller 200 has improved feeding speed and conveying stability for the printing substrate.
Further, the first drying box 300 of step S5 includes a driving fan 310, a heating pipe 320, a transmission shaft 330 and a temperature sensor 340, the driving fan 310 is fixedly installed at two ends of the first drying box 300, the heating pipes 320 are fixedly installed at two sides of the inner wall of the first drying box 400, the transmission shaft 330 is fixedly installed in the middle of the inner wall of the first drying box 300, the temperature sensors 340 are fixedly installed at two ends of the first drying box 300, the temperature sensors 340 are electrically connected to the driving fan 310 and the heating pipe 320, the driving fan 310 and the heating pipe 320 are used in cooperation to dry the printing substrate, and the transmission shaft 330 has a transmission effect on the printing substrate.
Further, the output end of the second drying box 400 of the step S9 is provided with a second high-speed power driving roller 500, the second high-speed power transmission roller 500 includes a bracket 510, a second servo motor 520 and a second bearing 530, the output end of the second drying box 400 is fixedly provided with a second high-speed power driving roller 500, two ends of the second high-speed power driving roller 500 are fixedly arranged on a bracket 510 through a second bearing 530, one end of the second high-speed power transmission roller 500 is fixedly installed on the output end of the second servo motor 520, two sets of servo motor two 520 are equipped with altogether, and the top servo motor two 520 anticlockwise rotation, the bottom servo motor two 520 clockwise turning, support 510 has the installation effect to bearing two 530, and bearing two 530 has the positioning action to second high-speed power driving roller 500, and servo motor two 520 provides the power effect to the rotation of second high-speed power driving roller 500.
Example 2:
the invention provides a high-speed gravure printing method, which has the advantages of high rotating speed and clear printing, and referring to fig. 1, the method comprises the following steps:
s1, unreeling and feeding, wherein the automatic unreeling machine carries out feeding at a set speed;
s2, testing the tension of the first discharging, detecting the tension of the printing substrate in real time, and adjusting the feeding speed of the discharging traction mechanism according to the comparison result of the real-time tension and the preset tension value;
s3, according to the structure of the tension test, the first power roller conveyor improves the feeding speed and the transmission stability, and the speed of the first power roller conveyor is 280 m/min;
s4, printing, namely, brushing ink on the surface of the ink stick by adjusting the angle of the doctor blade, and printing after the ink stick is aligned with the printing mark of the printing substrate;
s5, drying the printed substrate passing through S4 through a drying box, wherein the temperature inside the drying box is 350 degrees;
s6 detecting the tension of the second discharging, wherein the second discharging tension detecting mechanism detects the tension of the printing base material processed by the step S5;
s7, positioning and detecting, namely, positioning and detecting the printing base material in the step S6 by adopting an optical fiber positioner;
s8, second printing, namely, carrying out secondary printing on the printing substrate through an ink stick to deepen the printing color depth;
s9, drying, namely drying the printed substrate passing through S8 through a drying box, wherein the temperature inside the drying box is 450 degrees;
s10, a second power roller conveyor, wherein the power roller conveyor improves the feeding speed and the transmission stability, and the speed of the second power roller conveyor is 280 m/min;
s11, cooling, and cooling the printing substrate by a cooling roller;
s12, coiling to collect materials, and collecting and drawing the printed printing base materials by a material collecting and drawing mechanism and cutting to obtain a finished product; before the coil receiving step S12, the steps S2-S10 are carried out more than twice according to the requirement of the finished product pattern;
s1, carrying out unreeling and feeding, wherein the rotation speeds of the first power roller conveyor in the step S3 and the second power roller conveyor in the step S10 are the same, the current traction tension is detected in real time in the step S2 first discharging tension test and the step S6 second discharging tension test, and the adjustment is realized by adjusting a tension mechanism according to the tension feedback condition of the traction tension sensing roller, so that the synchronism in the transmission process is realized;
further, the first discharging tension test in step S2 includes a paper feeding roller 110, a brake roller 120, a tension detection roller 130, and a first paper discharging roller 140, the right end of the first paper discharging roller 140 is provided with a first high-speed power transmission roller 200, the printing substrate passes through the paper feeding roller 110, the brake roller 120, and the tension detection roller 130 in sequence to perform tension adjustment, the adjusted printing substrate is transmitted from the first paper discharging roller 140 to the first high-speed power transmission roller 200, the paper feeding roller 110, the brake roller 120, the tension detection roller 130, and the first paper discharging roller 140 are externally connected with an adjuster to form a full-automatic tension controller, which can receive signals transmitted by the tension sensor, then output signals after intelligent PID no-overshoot algorithm operation processing by an internal device, adjust an execution mechanism to control the tension to adapt to the change of the roll diameter, and in addition, a high-precision D/a converter is adopted, the output precision is up to 0.1%, so that the tension control is, the first discharge tension test has a tension test effect on the printed substrate.
Further, in step S3, the first high-speed power transmission roller 200 includes a second paper output roller 210, a first servo motor 220, a motor bracket 221 and a first bearing 221, two ends of the first high-speed power transmission roller 200 are fixed on the bracket for the first material placing tension test through a first bearing 230, the left end of the first high-speed power transmission roller 200 is fixedly mounted on the output end of the first servo motor 220, the motor bracket 221 is fixedly mounted at the bottom of the first servo motor 220, the second paper output roller 210 is arranged at the bottom of the first high-speed power transmission roller 200, the motor bracket 221 and the second paper output roller 210 are fixedly mounted on the bracket for the first material placing tension test, the second paper output roller 210 has an output effect on the printing base material, the first servo motor 220 provides a power effect for the rotation of the first high-speed power transmission roller 200, the motor bracket 221 has a fixing effect on the first servo motor 220, and the first bearing 221 has a positioning effect on the first high-speed power transmission roller, the first high-speed power transmission roller 200 has improved feeding speed and conveying stability for the printing substrate.
Further, the first drying box 300 of step S5 includes a driving fan 310, a heating pipe 320, a transmission shaft 330 and a temperature sensor 340, the driving fan 310 is fixedly installed at two ends of the first drying box 300, the heating pipes 320 are fixedly installed at two sides of the inner wall of the first drying box 400, the transmission shaft 330 is fixedly installed in the middle of the inner wall of the first drying box 300, the temperature sensors 340 are fixedly installed at two ends of the first drying box 300, the temperature sensors 340 are electrically connected to the driving fan 310 and the heating pipe 320, the driving fan 310 and the heating pipe 320 are used in cooperation to dry the printing substrate, and the transmission shaft 330 has a transmission effect on the printing substrate.
Further, the output end of the second drying box 400 of the step S9 is provided with a second high-speed power driving roller 500, the second high-speed power transmission roller 500 includes a bracket 510, a second servo motor 520 and a second bearing 530, the output end of the second drying box 400 is fixedly provided with a second high-speed power driving roller 500, two ends of the second high-speed power driving roller 500 are fixedly arranged on a bracket 510 through a second bearing 530, one end of the second high-speed power transmission roller 500 is fixedly installed on the output end of the second servo motor 520, two sets of servo motor two 520 are equipped with altogether, and the top servo motor two 520 anticlockwise rotation, the bottom servo motor two 520 clockwise turning, support 510 has the installation effect to bearing two 530, and bearing two 530 has the positioning action to second high-speed power driving roller 500, and servo motor two 520 provides the power effect to the rotation of second high-speed power driving roller 500.
Example 3:
the invention provides a high-speed gravure printing method, which has the advantages of high rotating speed and clear printing, and referring to fig. 1, the method comprises the following steps:
s1, unreeling and feeding, wherein the automatic unreeling machine carries out feeding at a set speed;
s2, testing the tension of the first discharging, detecting the tension of the printing substrate in real time, and adjusting the feeding speed of the discharging traction mechanism according to the comparison result of the real-time tension and the preset tension value;
s3, according to the structure of the tension test, the first power roller conveyor improves the feeding speed and the transmission stability, and the speed of the first power roller conveyor is 300 m/min;
s4, printing, namely, brushing ink on the surface of the ink stick by adjusting the angle of the doctor blade, and printing after the ink stick is aligned with the printing mark of the printing substrate;
s5 first drying, drying the printed base material passing S4 by a drying box, wherein the temperature in the drying box is 400 DEG
S6 detecting the tension of the second discharging, wherein the second discharging tension detecting mechanism detects the tension of the printing base material processed by the step S5;
s7, positioning and detecting, namely, positioning and detecting the printing base material in the step S6 by adopting an optical fiber positioner;
s8, second printing, namely, carrying out secondary printing on the printing substrate through an ink stick to deepen the printing color depth;
s9 second drying, drying the printed substrate passing S8 by a drying box, wherein the temperature in the drying box is 500 degrees
S10, a second power roller conveyor, wherein the power roller conveyor improves the feeding speed and the transmission stability, and the speed of the second power roller conveyor is 300 m/min;
s11, cooling, and cooling the printing substrate by a cooling roller;
s12, coiling to collect materials, and collecting and drawing the printed printing base materials by a material collecting and drawing mechanism and cutting to obtain a finished product; before the coil receiving step S12, the steps S2-S10 are carried out more than twice according to the requirement of the finished product pattern;
s1, carrying out unreeling and feeding, wherein the rotation speeds of the first power roller conveyor in the step S3 and the second power roller conveyor in the step S10 are the same, the current traction tension is detected in real time in the step S2 first discharging tension test and the step S6 second discharging tension test, and the adjustment is realized by adjusting a tension mechanism according to the tension feedback condition of the traction tension sensing roller, so that the synchronism in the transmission process is realized;
further, the first discharging tension test in step S2 includes a paper feeding roller 110, a brake roller 120, a tension detection roller 130, and a first paper discharging roller 140, the right end of the first paper discharging roller 140 is provided with a first high-speed power transmission roller 200, the printing substrate passes through the paper feeding roller 110, the brake roller 120, and the tension detection roller 130 in sequence to perform tension adjustment, the adjusted printing substrate is transmitted from the first paper discharging roller 140 to the first high-speed power transmission roller 200, the paper feeding roller 110, the brake roller 120, the tension detection roller 130, and the first paper discharging roller 140 are externally connected with an adjuster to form a full-automatic tension controller, which can receive signals transmitted by the tension sensor, then output signals after intelligent PID no-overshoot algorithm operation processing by an internal device, adjust an execution mechanism to control the tension to adapt to the change of the roll diameter, and in addition, a high-precision D/a converter is adopted, the output precision is up to 0.1%, so that the tension control is, the first discharge tension test has a tension test effect on the printed substrate.
Further, in step S3, the first high-speed power transmission roller 200 includes a second paper output roller 210, a first servo motor 220, a motor bracket 221 and a first bearing 221, two ends of the first high-speed power transmission roller 200 are fixed on the bracket for the first material placing tension test through a first bearing 230, the left end of the first high-speed power transmission roller 200 is fixedly mounted on the output end of the first servo motor 220, the motor bracket 221 is fixedly mounted at the bottom of the first servo motor 220, the second paper output roller 210 is arranged at the bottom of the first high-speed power transmission roller 200, the motor bracket 221 and the second paper output roller 210 are fixedly mounted on the bracket for the first material placing tension test, the second paper output roller 210 has an output effect on the printing base material, the first servo motor 220 provides a power effect for the rotation of the first high-speed power transmission roller 200, the motor bracket 221 has a fixing effect on the first servo motor 220, and the first bearing 221 has a positioning effect on the first high-speed power transmission roller, the first high-speed power transmission roller 200 has improved feeding speed and conveying stability for the printing substrate.
Further, the first drying box 300 of step S5 includes a driving fan 310, a heating pipe 320, a transmission shaft 330 and a temperature sensor 340, the driving fan 310 is fixedly installed at two ends of the first drying box 300, the heating pipes 320 are fixedly installed at two sides of the inner wall of the first drying box 400, the transmission shaft 330 is fixedly installed in the middle of the inner wall of the first drying box 300, the temperature sensors 340 are fixedly installed at two ends of the first drying box 300, the temperature sensors 340 are electrically connected to the driving fan 310 and the heating pipe 320, the driving fan 310 and the heating pipe 320 are used in cooperation to dry the printing substrate, and the transmission shaft 330 has a transmission effect on the printing substrate.
Further, the output end of the second drying box 400 of the step S9 is provided with a second high-speed power driving roller 500, the second high-speed power transmission roller 500 includes a bracket 510, a second servo motor 520 and a second bearing 530, the output end of the second drying box 400 is fixedly provided with a second high-speed power driving roller 500, two ends of the second high-speed power driving roller 500 are fixedly arranged on a bracket 510 through a second bearing 530, one end of the second high-speed power transmission roller 500 is fixedly installed on the output end of the second servo motor 520, two sets of servo motor two 520 are equipped with altogether, and the top servo motor two 520 anticlockwise rotation, the bottom servo motor two 520 clockwise turning, support 510 has the installation effect to bearing two 530, and bearing two 530 has the positioning action to second high-speed power driving roller 500, and servo motor two 520 provides the power effect to the rotation of second high-speed power driving roller 500.
The gravure printing methods of examples 1 to 3 above were put into practical tests, and the following data were obtained regarding the speed and stability of a high-speed gravure printing method in the practical tests:
| detecting items | Example 1 | Example 2 | Example 3 |
| Rotational speed | 260m/min | 280m/min | 300m/min |
| Definition of | Is preferably used | Is preferably used | Is poor |
As can be seen from the above table, the gravure printing method in example 2 has higher rotation and stability in practical use.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A high-speed gravure printing method, characterized by: the method comprises the following steps:
s1, unreeling and feeding, wherein the automatic unreeling machine carries out feeding at a set speed;
s2, testing the tension of the first discharging, detecting the tension of the printing substrate in real time, and adjusting the feeding speed of the discharging traction mechanism according to the comparison result of the real-time tension and the preset tension value;
s3, improving the feeding speed and the transmission stability according to the tension test structure, wherein the speed of the first power roller conveyor is 260-300 m/min;
s4, printing, namely, brushing ink on the surface of the ink stick by adjusting the angle of the doctor blade, and printing after the ink stick is aligned with the printing mark of the printing substrate;
s5, drying the printed substrate passing through S4 through a drying box at the temperature of 300-400 ℃;
s6 detecting the tension of the second discharging, wherein the second discharging tension detecting mechanism detects the tension of the printing base material processed by the step S5;
s7, positioning and detecting, namely, positioning and detecting the printing base material in the step S6 by adopting an optical fiber positioner;
s8, second printing, namely, carrying out secondary printing on the printing substrate through an ink stick to deepen the printing color depth;
s9, drying, namely drying the printed substrate passing through S8 through a drying box, wherein the temperature inside the drying box is 400-500 degrees;
s10, a second power roller conveyor, wherein the power roller conveyor improves the feeding speed and the transmission stability, and the speed of the second power roller conveyor is 260-300 m/min;
s11, cooling, and cooling the printing substrate by a cooling roller;
s12, coiling to collect materials, and collecting and drawing the printed printing base materials by a material collecting and drawing mechanism and cutting to obtain a finished product; before the coil receiving step S12, the steps S2-S10 are carried out more than twice according to the requirement of the finished product pattern;
and S1, unreeling and feeding, wherein the rotation speeds of the first power roller conveyor in the step S3 and the second power roller conveyor in the step S10 are the same, the current traction tension is detected in real time through the first discharging tension test in the step S2 and the second discharging tension test in the step S6, and the adjustment is realized through adjusting a tension mechanism according to the tension feedback condition of the traction tension sensing roller, so that the synchronism in the transmission process is realized.
2. The high-speed gravure printing method according to claim 1, wherein the first discharging tension test of step S2 includes a first paper feeding roller, a first brake roller, a first tension detection roller and a first paper discharging roller, a first high-speed power transmission roller is disposed at a right end of the first paper discharging roller, the printing substrate is subjected to tension adjustment sequentially through the first paper feeding roller, the first brake roller and the first tension detection roller, and the adjusted printing substrate is transferred from the first paper discharging roller to the first high-speed power transmission roller.
3. The high-speed gravure printing method according to claim 1, wherein the first high-speed power transmission roller of step S3 includes a second paper output roller, a first servo motor, a motor bracket, and a first bearing, two ends of the first high-speed power transmission roller are fixed on the bracket for the first discharging tension test through the first bearing, a left end of the first high-speed power transmission roller is fixedly installed on an output end of the servo motor, the motor bracket is fixedly installed at a bottom of the first servo motor, the second paper output roller is installed at a bottom of the first high-speed power transmission roller, and the motor bracket and the second paper output roller are fixedly installed on the bracket for the first discharging tension test.
4. The high-speed gravure printing method according to claim 1, wherein the first drying box of step S5 includes a driving fan, heating pipes, a transmission shaft, and temperature sensors, the driving fan is fixedly installed at two ends of the first drying box, the heating pipes are fixedly installed at two sides of the inner wall of the first drying box, the transmission shaft is fixedly installed in the middle of the inner wall of the first drying box, the temperature sensors are fixedly installed at two ends of the first drying box, and the temperature sensors are electrically connected to the driving fan and the heating pipes.
5. The high-speed gravure printing method according to claim 1, wherein in step S9, a second high-speed power transmission roller is installed at the output end of the second drying box, the second high-speed power transmission roller includes a bracket, a second servo motor and a second bearing, the output end of the second drying box is fixedly installed with the second high-speed power transmission roller, two ends of the second high-speed power transmission roller are fixedly installed on the bracket through the second bearing, one end of the second high-speed power transmission roller is fixedly installed on the output end of the second servo motor, the second servo motor is provided with two sets, the top servo motor rotates counterclockwise, and the bottom servo motor rotates clockwise.
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