A green printing lithographic printing apparatus

Abstract

The application discloses a kind of green printing with lithographic press, it is related to lithographic printing technical field, several whole limit traction air cylinders are equidistantly installed in the inner side of branch printing delivery box, the one end of several whole limit traction air cylinders is clamped with paste pair sliding block, and whole limit traction roller is rotatably connected between two paste pair sliding blocks, heat exchange fixed limit roller is rotatably connected between two paste pair sliding blocks, and printing processing frame is rotatably connected to the inner side of branch printing delivery box one end, the position of paper is guided switching processing using multi-section traction limit, cooperate from top to bottom ink homogenization distribution, ink flattening control and thickness control, then using two groups of quick switching ink supply components and continuous rotation printing components, so that when different color or same color complex pattern printing, different color simple pattern printing is carried out, same equipment can be used for quick switching processing, reduce the number of required printing equipment.

Description

Technical Field

[0001] This invention relates to the field of offset printing technology, specifically to an offset printing device for green printing. Background Technology

[0002] Lithographic printing is a printing technology based on the principle of oil and water immiscibility. Its core feature is that the image and blank areas on the printing plate are almost on the same plane. It utilizes the natural repulsion between oil and water to achieve precise pattern transfer. Currently, it is one of the most widely used mainstream printing methods in commercial printing, publishing, and packaging. Lithographic printing is also a common additive manufacturing equipment.

[0003] The patent application with application number CN202220517879.7 mentions "an automatic printing device". This patent connects the printing device and the transfer device to the controller. The controller controls the printing device and the transfer device to cooperate with each other, so that the transfer device automatically transfers the carrier plate and places the carrier plate on the printing device for printing. Finally, the printed carrier plate is transported to the drying oven by the printing device for drying. The whole process is automated, which greatly increases the printing efficiency.

[0004] However, existing offset printing requires multiple identical printing presses for continuous printing of complex patterns in multiple layers of different colors. Furthermore, for simple patterns in different colors, different production lines are needed. This results in the need to increase printing equipment under different printing conditions, which greatly increases the actual production cost. Summary of the Invention

[0005] This invention provides a green offset printing equipment that can effectively solve the problem mentioned in the background art that existing offset printing requires multiple identical printing presses for continuous printing when printing complex patterns in multiple layers of different colors, and requires different production lines for printing simple patterns in different colors, resulting in the need to increase printing equipment under different printing conditions, which greatly increases the actual production cost.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a green printing offset printing device, comprising a bottom support frame, wherein a plurality of split printing boxes are equidistantly installed at the top center of the bottom support frame; The side end of the split printing box is equipped with a reciprocating double printing assembly; The reciprocating dual-print assembly includes a limit traction cylinder; Several limit traction cylinders are installed at equal intervals on the inner side of the split printing box, and one end of each limit traction cylinder is connected to a sliding block. A limiting traction roller is rotatably connected between the two said pair sliding blocks, and a heat exchange limiting roller is rotatably connected between the two said pair sliding blocks; The printing processing frame is rotatably connected to one end of the inner side of the split printing box, and the printing processing frame has an inner insertion combination slot on its side. A printing plate is inserted and installed inside the inner slot; The top inner side of the split printing box is symmetrically equipped with reciprocating electric slide rails, and the bottom end of the reciprocating electric slide rails is equipped with a reciprocating integrated frame through a slide rail seat. A transfer grinding roller is rotatably connected to the inner side of the reciprocating integration frame at the position corresponding to the printing processing frame.

[0007] According to the above technical solution, a fixed-projection matching box is symmetrically snapped into the inner side of the reciprocating integrated frame; The grinding roller is rotatably connected to the inner side of the fixed-projection matching box, and a transmission gear is engaged at one end of the transfer grinding roller. One end of the grinding and matching roller is engaged with a linkage gear, and the inner side of the reciprocating integration frame is symmetrically connected to a pressing grinding roller. An isolation dust removal box is installed on one side of the top of the bottom support frame, and traction control boxes are snapped onto both sides of the top of the bottom support frame. The traction roller and the heat exchange limiting roller are both placed inside the split printing box. The sliding block is slidably installed at one end of the split printing box. The outer end of the reciprocating integration frame is slidably attached to the inner end of the split printing box.

[0008] According to the above technical solution, a processing motor is installed at one end of the reciprocating integration frame and the split printing box through a motor mount, and a scraping and limiting frame is snapped into the top inner side of the reciprocating integration frame. The top of the reciprocating integrated frame is symmetrically connected with a feeding pipe; The inner side of the split printing box is equidistantly connected with several pressure cylinders, and one end of each pressure cylinder is equipped with a pressure scraping box. One end of each pressure scraping box is connected to a discharge limiting pipe. The top of the split printing box is symmetrically fitted with spring correction rods, and the bottom of the spring correction rods is fitted with reciprocating correction frames. A downward pressing combined roller is installed between the two reciprocating correction frames. There are two of each of the transfer grinding roller and the grinding coupling roller, and the transmission gear and the linkage gear are meshed together.

[0009] According to the above technical solution, pressure sensors are installed at the positions of the reciprocating correction frame at both ends of the split printing box; The top of the fixed-discharge box and the split-discharge box are welded with a split-discharge base, and a feeding processing box is snapped into the top of the split-discharge box at the position corresponding to the split-discharge base. An electromagnetic processing valve is embedded in one end of the feeding and processing pipe; The transfer grinding roller, grinding coupling roller, and pressing grinding roller are all rotatably mounted inside the reciprocating integration frame, and the output shaft of the processing motor is engaged with one end of the transfer grinding roller, grinding coupling roller, and pressing grinding roller.

[0010] According to the above technical solution, a drying box is snapped into the inner side of the split printing box, and UV curing units are installed at equal intervals on the inner side of the drying box. The top and bottom of the drying box are equidistantly connected by several airflow circulation pipes, and the inner side of the heat exchange limiting roller is connected by an external exhaust pipe. A double-inlet air pipe is connected through the inner side of the external exhaust pipe. A drying electric heating circulation box is installed at one end of the split printing box corresponding to the airflow circulation pipe and the double-inlet air inlet pipe. An air intake fan is embedded at one end of the airflow circulation pipe and the double-inlet air inlet pipe. The bottom end of the scraping and limiting frame is attached to the outer end of the pressing and grinding roller, and the top end of the reciprocating correction frame is attached to the bottom of the pressure sensor.

[0011] According to the above technical solution, the top end of the feeding processing pipe is installed through the bottom of the feeding processing box, and the air circulation pipe, the external exhaust pipe and the dual injection air inlet pipe are all installed through one end of the drying electric heating circulation box. The input terminals of the traction cylinder, reciprocating electric slide rail, processing motor, counter-pressure cylinder, pressure sensor, electromagnetic processing valve, UV curing unit, drying electric heating circulation box, and intake fan are all electrically connected to the output terminal of an external controller. The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0012] According to the above technical solution, a purification multi-stage assembly is provided at one end of the isolation dust removal box; The purification multi-tasking assembly includes a fixed conveyor belt; A fixed conveyor belt is installed at one end of the inner side of the isolation dust removal box, and pressure-pair electric push rods are symmetrically snapped into the inner side of the isolation dust removal box; One end of the pressing electric push rod is equipped with a pressing processing frame, and one end of the pressing processing frame is equipped with a linkage motor via a motor mount. The output shaft of the linkage motor is engaged with a cleaning alignment roller, and an electrostatic adsorption sleeve is sleeved on the side end of the cleaning alignment roller. The inner side of the pressing and processing frame is symmetrically equipped with cleaning electric slide rails, and a cleaning scraper is installed at one end of the cleaning electric slide rail through a slide rail seat. A vacuum cleaner is installed at one end of the isolation dust removal box, and a vacuum pipe is connected through the top of the pressing and processing frame. The isolation dust removal box is equipped with a liquid injection operation box at one end, and a liquid pump is installed on both sides of one end of the isolation dust removal box via a motor mount; One end of the liquid injection operation box is symmetrically connected with a liquid spraying pipe.

[0013] According to the above technical solution, a spray head is installed at one end of the spray pipe via an adapter; A separation treatment box is installed inside the isolation dust removal box at the position corresponding to the liquid spray head, and an electric heating dryer is symmetrically installed inside the separation treatment box. One of the traction control boxes has several pressing hydraulic cylinders installed at equal intervals on its inner side, and the other traction control box has several tensioning electric push rods installed at equal intervals on its inner side. The pressing and processing frame is placed inside the isolation dust removal box, and the cleaning scraper is slidably installed inside the pressing and processing frame.

[0014] According to the above technical solution, a processing fixing block is installed at one end of the pressing hydraulic cylinder and the tensioning electric push rod, and a pressure fixing rod is rotatably installed at one end of the processing fixing block; A laser detector is snapped into the inner side of the traction control box at the position corresponding to the pressing hydraulic cylinder, and a material receiving electric slide rail is installed on one side of the top of the bottom support frame. The top of the receiving electric slide rail is equipped with a receiving operation frame via a slide rail seat. One end of the receiving operation frame is equipped with a receiving motor via a motor seat. The output shaft of the receiving motor is engaged with a receiving operation rod. One end of the vacuum cleaner is connected to one end of the suction pipe via an adapter, and one end of the liquid pump is connected to one end of the liquid spray pipe via an adapter. The liquid spray pipe is installed through the top of the partitioned treatment box.

[0015] According to the above technical solution, the material receiving operation frame is slidably installed on the top of the bottom support frame; The input terminals of the fixed conveyor belt, pressure push rod, linkage motor, cleaning electric slide rail, vacuum cleaner, liquid pump, electric dryer, pressing hydraulic cylinder, tensioning electric push rod, laser detector, material receiving electric slide rail, and material receiving motor are all electrically connected to the output terminal of the external controller.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Equipped with a reciprocating dual-printing assembly, the paper is preheated through a heat exchange limiting roller and a dual-injection air inlet pipe. Ink is transferred through a transfer grinding roller, a printing processing frame, and a printing plate. The ink supply components are switched using a reciprocating electric slide rail and a reciprocating integrated frame, enabling two sets of continuous and switching printing processes. The ink is UV cured using a UV curing unit, and synchronously heated and dried using an air intake fan and an airflow circulation pipe. Different inks are fed through two sets of continuously switching inking components. Continuous rotary printing is performed using two sets of printing plates. The paper is traction-preheated by traction and preheating components, and then simultaneously UV and heat drying and curing are carried out. This allows for continuous switching processing when printing two different colors or two different patterns on a single sheet of paper. The ink is fed into multiple locations via a feeding box, feeding pipe, and fixed feeding box. A processing motor drives a transfer grinding roller, a pressing grinding roller, a transmission gear, and a linkage gear. The ink is dispersed using a scraping and limiting frame. Multi-segment counter-rotating processing continuously rolls and spreads the ink. A counter-pressure cylinder adjusts the distance between the counter-pressure scraping box, the transfer grinding roller, and the printing frame. The counter-pressure scraping box controls the thickness of the ink adhering to the surface. The ink is fed and spread through multi-segment rolling and counter-rotating components. Multi-segment scraping and thickness limiting processing simultaneously limits the flatness, spread, and thickness of the ink, thereby controlling the printing ink and improving the uniformity of printing adhesion, the uniformity of overall thickness, and the clarity of printing. By employing multiple sets of reciprocating and switching printing processes, coupled with multiple sets of ink homogenization and dispersion processes, this technology effectively solves the problem in existing technologies where different production lines are needed for printing complex multi-layered patterns or different colors of simple patterns, leading to the need for additional printing equipment and manual operation. Utilizing multi-segment traction constraints to guide and switch the paper position, combined with top-down ink homogenization distribution, ink leveling control, and thickness control, and employing two sets of rapidly switching inking components and continuously rotating printing components, it allows for rapid switching between printing complex patterns of different or the same color, and simple patterns of different colors, using the same equipment. This reduces the number of printing devices required. Furthermore, the reciprocating switching operation eliminates the need to change equipment, reducing the need for repeated loading and unloading operations by workers, effectively ensuring overall printing efficiency, while reducing actual printing costs and material waste, and alleviating the labor intensity of workers.

[0017] 2. Equipped with a multi-stage purification assembly, the paper is supported and moved by a fixed conveyor belt. A pressure-aligning electric push rod and a linkage motor drive the cleaning alignment rollers and electrostatic adsorption sleeves to adsorb residual debris and dust on the paper surface. This is combined with a cleaning scraper, vacuum cleaner, and suction pipe to adsorb air and impurities, achieving continuous cleaning of the paper surface. A liquid pump, spray pipe, spray head, and electric dryer control the humidity of the paper surface. Through two sets of cleaning and central humidity control processes, the moisture content of the paper and the paper itself is controlled, preventing ink smudging or excessive ink penetration due to surface impurities or insufficient moisture. A pressing hydraulic cylinder and a pressing fixing rod press the paper, controlling its flatness, moisture content, and surface cleanliness before printing. Through multi-stage linkage, the accuracy and uniformity of ink adhesion and alignment during printing are ensured, preventing misalignment or overall tilting that could lead to inconsistent printing color depth, thus guaranteeing the quality of the actual print. The tension of the paper is adjusted by using an electric push rod to move the fixing block and the pressure fixing rod. The take-up motor drives the take-up operating rod to take up the printed paper. The take-up electric slide rail moves the take-up operating frame back and forth. By using lifting and pulling to guide the paper and reciprocating to pull it, the straightness of the paper is controlled during take-up. This ensures the stability of continuous printing and take-up and avoids paper breakage due to excessive tension.

[0018] In summary, by employing feeding cleaning, paper surface treatment, multiple repetitive printing processes, and external traction control, offset printing operations can achieve printing of different patterns, colors, and complexities. Furthermore, bidirectional repetitive printing and rapid color switching, combined with simultaneous preheating, rapid curing, and hot drying, enable short-duration superimposed printing. This allows for quick operation when printing complex patterns and multiple different colors, reducing the required equipment and production line length, alleviating worker workload, minimizing paper loss from repeated loading and unloading, effectively reducing energy consumption, ensuring printing efficiency, and lowering printing costs. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2This is a schematic diagram of the reciprocating double printing assembly of the present invention; Figure 3 This is a schematic diagram of the installation structure of the split printing box of the present invention; Figure 4 This is a schematic diagram of the installation structure of the reciprocating integrated frame of the present invention; Figure 5 This is a schematic diagram of the installation structure of the scraping and limiting frame of the present invention; Figure 6 This is a schematic diagram of the installation structure of the inner insertion combination slot of the present invention; Figure 7 This is a schematic diagram of the installation structure of the transmission gear of the present invention; Figure 8 This is a schematic diagram of the installation structure of the UV curing device of the present invention; Figure 9 This is a schematic diagram of the structure of the purification multi-draw component of the present invention; Figure 10 This is a schematic diagram of the installation structure of the traction control box of the present invention; Figure 11 This is a schematic diagram of the installation structure of the dust removal box of the present invention; Figure 12 This is a schematic diagram of the installation structure of the cleaning scraper of the present invention; The diagram labels are: 1. Base support frame; 2. Separate printing box; 3. Isolation dust removal box; 4. Traction control box. 5. Reciprocating double printing assembly; 501. Limiting traction cylinder; 502. Adhesion sliding block; 503. Limiting traction roller; 504. Heat exchange limiting roller; 505. Printing processing rack; 506. Inner insertion combination slot; 507. Printing plate; 508. Reciprocating electric slide rail; 509. Reciprocating integrated rack; 510. Transfer grinding roller; 511. Fixed-point matching box; 512. Grinding matching roller; 513. Transmission gear; 514. Linkage gear; 515. Pressing grinding roller; 516. Processing motor; 517. Scraping limiting rack; 5 18. Feeding pipe; 519. Counterpressure cylinder; 520. Counterpressure scraper box; 521. Discharge limiting pipe; 522. Spring correction rod; 523. Reciprocating correction frame; 524. Downward pressure combined roller; 525. Pressure sensor; 526. Split base; 527. Feeding box; 528. Electromagnetic processing valve; 529. Drying box; 530. UV curing unit; 531. Air circulation pipe; 532. External exhaust pipe; 533. Dual-inlet air pipe; 534. Drying electric heating circulation box; 535. Air intake fan; 6. Purification multi-traction assembly; 601. Fixed conveyor belt; 602. Pressing electric push rod; 603. Pressing processing frame; 604. Linkage motor; 605. Cleaning alignment roller; 606. Electrostatic adsorption sleeve; 607. Cleaning electric slide rail; 608. Cleaning scraper; 609. Vacuum cleaner; 610. Vacuum suction pipe; 611. Liquid injection control box; 612. Liquid pump; 613. Liquid spray pipe; 614. Material collection control rod; 615. Liquid spray head; 616. Separation processing box; 617. Electric heating dryer; 618. Pressing hydraulic cylinder; 619. Tensioning electric push rod; 620. Processing fixing block; 621. Pressing fixing rod; 622. Laser detector; 623. Material collection electric slide rail; 624. Material collection control frame; 625. Material collection motor. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] Example: Figures 1-12 As shown, the present invention provides a technical solution, a green printing offset printing equipment, including a bottom support frame 1, a plurality of split printing boxes 2 are equidistantly installed at the top center of the bottom support frame 1, an isolation dust removal box 3 is installed on one side of the top of the bottom support frame 1, and traction control boxes 4 are snapped onto both sides of the top of the bottom support frame 1. The side end of the split printing box 2 is equipped with a reciprocating double printing component 5; The reciprocating double printing assembly 5 includes a traction cylinder 501, a sliding block 502, a traction roller 503, a heat exchange limiting roller 504, a printing processing frame 505, an inner insertion combination slot 506, a printing plate 507, a reciprocating electric slide rail 508, a reciprocating integration frame 509, a transfer grinding roller 510, a fixed-injection matching box 511, a grinding coupling roller 512, a transmission gear 513, a linkage gear 514, a pressing grinding roller 515, a processing motor 516, a leveling limiting frame 517, and an injection... Material handling pipe 518, counter-pressure cylinder 519, counter-pressure scraping box 520, discharge limiting pipe 521, spring correction rod 522, reciprocating correction frame 523, downward pressure combined roller 524, pressure sensor 525, split base 526, feeding box 527, electromagnetic processing valve 528, drying box 529, UV curing unit 530, airflow circulation pipe 531, external exhaust pipe 532, dual-inlet air inlet pipe 533, drying electric heating circulation box 534, and air intake fan 535; Several limit traction cylinders 501 are installed at equal intervals on the inner side of the split printing box 2. One end of each limit traction cylinder 501 is connected to a sliding block 502. A traction roller 503 is rotatably connected between two sliding blocks 502, and a heat exchange limiting roller 504 is rotatably connected between the two sliding blocks 502. Both the traction roller 503 and the heat exchange limiting roller 504 are placed inside the split printing box 2 to achieve alignment support and limitation of the substrate for offset printing. The sliding blocks 502 are slidably installed at one end of the split printing box 2 to achieve alignment support and limitation. A printing processing rack 505 is rotatably connected to one end of the inner side of the split printing box 2, and an inner insertion combination slot 506 is opened on the side of the printing processing rack 505. A printed circuit board 507 is inserted and installed inside the inner insertion slot 506; A reciprocating electric slide rail 508 is symmetrically installed on the top inner side of the split printing box 2. A reciprocating integrated frame 509 is installed at the bottom of the reciprocating electric slide rail 508 through the slide rail seat. The outer end of the reciprocating integrated frame 509 slides and fits against the inner end of the split printing box 2 to achieve the stability of alignment movement and positioning support. A transfer grinding roller 510 is rotatably connected to the inner side of the reciprocating integrated frame 509 at the position corresponding to the printing processing frame 505, and a fixed-projection matching box 511 is symmetrically snapped into the inner side of the reciprocating integrated frame 509. The grinding roller 512 is rotatably connected to the inner side of the fixed-projection matching box 511, and a transmission gear 513 is snapped onto one end of the transfer grinding roller 510. One end of the grinding roller 512 is engaged with a linkage gear 514. There are two transfer grinding rollers 510 and two grinding rollers 512. The transmission gear 513 and the linkage gear 514 mesh to achieve steady transmission and grinding of ink. The reciprocating frame 509 is symmetrically rotatably connected to the inner side of the reciprocating frame 509. The transfer grinding roller 510, the grinding roller 512 and the pressing grinding roller 515 are all rotatably installed inside the reciprocating frame 509. The output shaft of the processing motor 516 is engaged with one end of the transfer grinding roller 510, the grinding roller 512 and the pressing grinding roller 515 to achieve rotation, positioning and installation. Both the reciprocating integration frame 509 and the split printing box 2 have a processing motor 516 installed at one end via a motor mount. The top inner side of the reciprocating integration frame 509 is fitted with a flattening limiting frame 517. The bottom end of the flattening limiting frame 517 is attached to the outer end of the pressing and grinding roller 515 to achieve the flattening treatment of ink. The top of the reciprocating integrated frame 509 is symmetrically connected with a feeding pipe 518; Several pressure cylinders 519 are equidistantly clamped on the inner side of the split printing box 2. One end of each pressure cylinder 519 is equipped with a pressure scraping box 520, and one end of the pressure scraping box 520 is connected to a discharge limiting pipe 521. The top of the split printing box 2 is symmetrically connected with spring correction rods 522, and the bottom of the spring correction rods 522 is equipped with reciprocating correction frames 523. The two reciprocating correction frames 523 are installed between the two pressing combined rollers 524. Pressure sensors 525 are installed at both ends of the split printing box 2 at the positions corresponding to the reciprocating correction frame 523. The top of the reciprocating correction frame 523 is in contact with the bottom of the pressure sensor 525 to adjust the traction strength of the load. The top of the fixed-discharge matching box 511 and the split printing box 2 are welded with a split base 526. The top of the split printing box 2 is snapped with a feeding processing box 527 at the position corresponding to the split base 526. The top of the feeding processing pipe 518 is installed through the bottom of the feeding processing box 527 to achieve accurate positioning and feeding processing. A solenoid valve 528 is embedded at one end of the feeding pipe 518. The inner side of the split printing box 2 is fitted with a drying box 529, and UV curing units 530 are installed at equal intervals on the inner side of the drying box 529. The top and bottom of the drying box 529 are equidistantly connected by several airflow circulation pipes 531, and the heat exchange limiting roller 504 is connected to an external exhaust pipe 532. A dual-inlet air pipe 533 is connected through the inner side of the external exhaust pipe 532; A drying electric heating circulation box 534 is installed at one end of the split printing box 2, corresponding to the air circulation pipe 531 and the double injection air inlet pipe 533. The air circulation pipe 531, the external exhaust pipe 532 and the double injection air inlet pipe 533 are all installed through one end of the drying electric heating circulation box 534 to realize the drying treatment of ink and the air circulation drying treatment. An air intake fan 535 is embedded at one end of the air circulation pipe 531 and the double injection air inlet pipe 533. To ensure stable operation of the equipment, the input terminals of the traction cylinder 501, reciprocating electric slide rail 508, processing motor 516, counter-pressure cylinder 519, pressure sensor 525, electromagnetic processing valve 528, UV curing unit 530, drying electric heating circulation box 534, and air intake fan 535 are all electrically connected to the output terminal of an external controller. The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0023] One end of the isolation and dust removal box 3 is equipped with a purification multi-stage assembly 6; The purification multi-traction assembly 6 includes a fixed conveyor belt 601, a pressing electric push rod 602, a pressing processing frame 603, a linkage motor 604, a cleaning alignment roller 605, an electrostatic adsorption sleeve 606, a cleaning electric slide rail 607, a cleaning scraper 608, a vacuum cleaner 609, a vacuum pipe 610, a liquid injection control box 611, a liquid pump 612, a liquid spray pipe 613, a material collection control rod 614, a liquid spray head 615, a separation processing box 616, an electric heating dryer 617, a pressing hydraulic cylinder 618, a tensioning electric push rod 619, a processing fixing block 620, a pressing fixing rod 621, a laser detector 622, a material collection electric slide rail 623, a material collection control frame 624, and a material collection motor 625. A fixed conveyor belt 601 is installed at one end of the inner side of the dust collection box 3, and pressure-pair electric push rods 602 are symmetrically snapped into the inner side of the dust collection box 3. One end of the electric push rod 602 is equipped with a pressing processing frame 603, and one end of the pressing processing frame 603 is equipped with a linkage motor 604 via a motor mount. The output shaft of the linkage motor 604 is engaged with a cleaning alignment roller 605, and an electrostatic adsorption sleeve 606 is sleeved on the side end of the cleaning alignment roller 605. The inner side of the pressing and processing frame 603 is symmetrically equipped with cleaning electric slide rails 607. One end of the cleaning electric slide rail 607 is equipped with a cleaning scraper 608 through the slide rail seat. The pressing and processing frame 603 is placed inside the isolation dust removal box 3. The cleaning scraper 608 is slidably installed inside the pressing and processing frame 603 to achieve alignment cleaning and limit cooperation processing. A vacuum cleaner 609 is installed at one end of the isolation dust removal box 3, and a suction pipe 610 is connected through the top of the pressure processing frame 603. One end of the vacuum cleaner 609 is connected to one end of the suction pipe 610 through an adapter to achieve dust removal and slag removal. A liquid injection control box 611 is installed at one end of the isolation dust removal box 3, and a liquid pump 612 is installed on both sides of one end of the isolation dust removal box 3 via a motor mount. One end of the liquid injection control box 611 is symmetrically connected to a liquid injection pipe 613, and one end of the liquid injection pipe 613 is fitted with a liquid injection head 615 via an adapter. A separation treatment box 616 is installed inside the dust removal box 3 at the position corresponding to the spray head 615. One end of the liquid pump 612 and one end of the spray pipe 613 are connected by an adapter. The spray pipe 613 is installed through the top of the separation treatment box 616 to ensure that the dryness of the carrier is adjusted. An electric heating dryer 617 is symmetrically installed inside the separation treatment box 616. One of the traction control boxes 4 has several pressing hydraulic cylinders 618 installed at equal intervals on its inner side, and another of the traction control boxes 4 has several tensioning electric push rods 619 installed at equal intervals on its inner side. A processing fixing block 620 is installed at one end of the pressing hydraulic cylinder 618 and the tensioning electric push rod 619, and a counter-pressing fixing rod 621 is rotatably installed at one end of the processing fixing block 620. A laser detector 622 is attached to the inner side of the traction control box 4 at the position corresponding to the pressing hydraulic cylinder 618, and a material receiving electric slide rail 623 is installed on one side of the top of the bottom support frame 1. A receiving operation frame 624 is mounted on the top of the receiving electric slide rail 623 via a slide rail seat. The receiving operation frame 624 is slidably mounted on the top of the bottom support frame 1 to realize reciprocating receiving processing. A receiving motor 625 is mounted on one end of the receiving operation frame 624 via a motor seat. The output shaft of the receiving motor 625 is engaged with a receiving operation rod 614. To ensure stable operation of the equipment, the input terminals of the fixed conveyor belt 601, the pressure-pair electric push rod 602, the linkage motor 604, the cleaning electric slide rail 607, the vacuum cleaner 609, the liquid pump 612, the electric heating dryer 617, the pressing hydraulic cylinder 618, the tensioning electric push rod 619, the laser detector 622, the receiving electric slide rail 623, and the receiving motor 625 are all electrically connected to the output terminal of an external controller.

[0024] The working principle and usage process of this invention are as follows: Before printing, the staff will test the humidity of the paper to be printed and make the printing plate 507 by plate making. The printing plate 507 is inserted into the printing processing rack 505 through the inner insertion combination slot 506. The paper roll is put into the feeding equipment. The paper is driven through the isolation dust box 3, the traction control box 4 and the multi-component printing box 2 by the external traction equipment, and finally pulled to the position of the receiving operation rod 614 at the position of the receiving operation rack 624. At this time, the receiving operation rod 614 is driven by the receiving motor 625 to rotate along the receiving operation rack 624, which drives the paper to move and be wound up. While the paper is being fed, the staff adds different inks to multiple sets of feeding boxes 527 according to the required printing color. The discharge speed of the feeding pipe 518 is controlled by the electromagnetic processing valve 528. The ink flows into the inner side of the fixed feeding box 511 along the feeding pipe 518. At this time, the ink comes into contact with the grinding roller 512 and the pressing grinding roller 515. The ink is dispersed by the scraping limit frame 517. The processing motor 516 drives the transfer grinding roller 510 and the pressing grinding roller 515 to rotate. The transfer grinding roller 510 drives the transmission gear 513 to rotate. The transmission gear 513 meshes with the linkage gear 514, thereby driving the grinding roller 512 to rotate through the transfer grinding roller 510. The ink is carried out by the rotation of the grinding roller 512 and is evenly spread on the surface of the transfer grinding roller 510 through the synchronous pressing and grinding treatment of the transfer grinding roller 510 and the pressing grinding roller 515. Once the ink has adhered and the paper has been pulled, the paper continues to be fed. The bottom of the paper is supported by the fixed conveyor belt 601, which moves the paper. The pressing electric push rod 602 moves the pressing processing frame 603 downward. The linkage motor 604 drives the cleaning alignment roller 605 to move and rotate in the opposite direction to the paper. This causes the electrostatic adsorption sleeve 606 to adsorb the debris and dust remaining on the paper surface. During the adsorption process, the cleaning electric slide rail 607 moves the cleaning scraper 608 along the pressing processing frame 603, so that the bottom of the cleaning scraper 608 is in contact with the outer end of the electrostatic adsorption sleeve 606. As the electrostatic adsorption sleeve 606 continues to rotate, the impurities attached to its surface are pushed out. The vacuum cleaner 609 and the suction pipe 610 adsorb the air and impurities, thereby achieving continuous cleaning of the paper surface. After the first stage of slag removal is completed, pure water is drawn from the liquid injection operation box 611 using the liquid pump 612 and the spray pipe 613, and atomized pure water is sprayed out using the spray head 615 to humidify the paper surface. The paper is then dried in conjunction with the electric heating dryer 617 to control the humidity. The above operation is then repeated to perform a second slag removal process on the paper surface, achieving thorough cleaning of the paper surface. After the paper is cleaned, it is conveyed to the inside of the traction control box 4. The pressing hydraulic cylinder 618 drives the processing fixing block 620 and the counter-pressing fixing rod 621 to move in opposite directions. The two sets of counter-pressing fixing rods 621 are used to press the paper. The laser detector 622 detects the levelness of the paper to achieve paper flattening. After flattening, the paper moves to the position of the limit traction roller 503. The limit traction cylinder 501 drives the contact sliding block 502 and the limit traction roller 503 to move along the split printing box 2 to support the paper. The spring correction rod 522 drives the reciprocating correction frame 523 to move down, so that the side end of the lower pressure combined roller 524 is attached to the top of the paper. The pressure contact sensing between the reciprocating correction frame 523 and the pressure sensor 525 is used to detect the traction strength and straightness of the paper, thereby avoiding the occurrence of excessive traction or excessive slack of the paper. When the paper is moved along the traction roller 503 to the position of the heat exchange limiting roller 504, the processing motor 516 drives the printing processing frame 505, the heat exchange limiting roller 504, the transfer grinding roller 510, the grinding coupling roller 512, and the pressing grinding roller 515 to rotate. Then, the counter-pressure cylinder 519 drives the counter-pressure scraping box 520 to move. The counter-pressure scraping box 520 moves to the side of the transfer grinding roller 510 and the printing processing frame 505, controlling the ink thickness on the surface of the transfer grinding roller 510 and the printing plate 507 at the position of the printing processing frame 505. In offset printing, the amount of ink used and the printing thickness can be controlled. Then, the reciprocating electric slide rail 508 drives the reciprocating integrated frame 509 to move along the split printing box 2, pushing the transfer grinding roller 510 to the position of the printing processing frame 505, so that the side of the transfer grinding roller 510 is in contact with the side of the printing processing frame 505 and the printing plate 507. Through rotational contact transfer, the ink is attached to the surface of the printing plate 507. The printing processing frame 505 drives the printing plate 507 to rotate, and the paper moves. The limiting traction cylinder 501 drives the bonding sliding block 502 and the heat exchange limiting roller 504 to rise, pushing the paper to be bonded to the surface of the printing plate 507, thus realizing offset printing. During the printing process, the paper moves into the drying chamber 529, where the UV curing unit 530 performs UV curing on the ink. The air intake fan 535 drives the hot, dry air in the drying electric heating circulation chamber 534 to flow along the airflow circulation pipe 531, inputting the hot, dry air into the drying chamber 529 and outputting the humid hot air into the drying electric heating circulation chamber 534, achieving rapid drying of the ink. The dual-injection air intake pipe 533 and the air intake fan 535 extract the hot, dry air from the drying electric heating circulation chamber 534 and inject it into the heat exchange limiting roller 504. The exhaust pipe 532 outputs cold, dry air into the drying electric heating circulation chamber 534. Through contact preheating, hot drying, and UV curing, the printed ink achieves rapid curing. After the first set of printing plates 507 is printed and the ink is cured, the paper that has been initially printed is pulled back by the limit traction roller 503, and then the above operation is repeated. This allows the printing plates 507 on both sides of a single printing processing frame 505 to perform two sets of different colors on a single sheet of paper. Through multiple sets of continuous printing processes, multiple sets of overlapping planar printing processes are achieved. After printing, the paper is moved to the traction control box 4. The tensioning electric push rod 619 drives the processing fixing block 620 and the pressure fixing rod 621 to move up and down along the traction control box 4, thereby adjusting the paper's tension and looseness. In conjunction with the take-up motor 625, the take-up operating rod 614 rotates along the take-up operating frame 624 to take up the printed paper. In conjunction with the take-up electric slide rail 623, the take-up operating frame 624 moves back and forth along the bottom support frame 1 to control the paper's tension during winding, ensuring the stability of continuous printing and take-up. Through feeding cleaning, paper surface treatment, multi-group repeated printing, and external traction control, double-layer printing can be performed using two sets of printing plates 507 in a single device during offset printing. This allows for rapid coordination when different colors need to be printed on the same pattern, and rapid overlay printing when different patterns need to be printed with the same color. This effectively reduces the required production line length for complex printing, while eliminating the need to change equipment for simple different-color printing, thus improving printing stability and efficiency, reducing the amount of equipment required, and shortening the production line length.

[0025] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A green printing offset printing device, comprising a base support frame (1), characterized in that: Several separate printing boxes (2) are installed at equal intervals at the top center of the bottom support frame (1). The side end of the split printing box (2) is provided with a reciprocating double printing assembly (5); The reciprocating double-print assembly (5) includes a limit traction cylinder (501); Several limit traction cylinders (501) are installed at equal intervals on the inner side of the split printing box (2), and one end of each limit traction cylinder (501) is connected to a sliding block (502). A limiting traction roller (503) is rotatably connected between the two said pair sliding blocks (502), and a heat exchange limiting roller (504) is rotatably connected between the two said pair sliding blocks (502). The printing processing frame (505) is rotatably connected to one end of the inner side of the split printing box (2), and the printing processing frame (505) has an inner insertion combination slot (506) on its side. A printing plate (507) is inserted and installed inside the inner insertion combination slot (506). The top inner side of the split printing box (2) is symmetrically equipped with reciprocating electric slide rails (508), and the bottom end of the reciprocating electric slide rails (508) is equipped with a reciprocating integrated frame (509) through the slide rail seat. The reciprocating integration frame (509) is rotatably connected to the printing processing frame (505) on its inner side.

2. The offset printing equipment for green printing according to claim 1, characterized in that, The reciprocating integration frame (509) is symmetrically connected to the fixed-projection matching box (511) on the inner side. The grinding roller (512) is rotatably connected to the inner side of the fixed-point matching box (511), and a transmission gear (513) is snapped onto one end of the transfer grinding roller (510). One end of the grinding coupling roller (512) is engaged with a linkage gear (514), and the inner side of the reciprocating integration frame (509) is symmetrically connected to a pressing grinding roller (515). An isolation dust removal box (3) is installed on one side of the top of the bottom support frame (1), and a traction control box (4) is snapped onto both sides of the top of the bottom support frame (1). The traction roller (503) and the heat exchange limit roller (504) are both placed inside the split printing box (2). The sliding block (502) is slidably installed at one end of the split printing box (2). The outer end of the reciprocating integration frame (509) is slidably attached to the inner end of the split printing box (2).

3. The offset printing equipment for green printing according to claim 2, characterized in that, Both the reciprocating integration frame (509) and the split printing box (2) have a processing motor (516) installed at one end via a motor mount. The top of the inner side of the reciprocating integration frame (509) is fitted with a scraping limit frame (517). The top of the reciprocating integrated frame (509) is symmetrically connected with a feeding processing pipe (518). The inner side of the split printing box (2) is equidistantly connected with several pressure cylinders (519). One end of each pressure cylinder (519) is equipped with a pressure scraping box (520). One end of the pressure scraping box (520) is connected through a discharge limiting pipe (521). The top of the split printing box (2) is symmetrically fitted with spring correction rods (522), and the bottom of the spring correction rods (522) is fitted with reciprocating correction frames (523). A downward pressure combined roller (524) is installed between the two reciprocating correction frames (523). There are two of each of the transfer grinding roller (510) and the grinding coupling roller (512), and the transmission gear (513) and the linkage gear (514) are meshed together.

4. The offset printing equipment for green printing according to claim 3, characterized in that, Pressure sensors (525) are installed at both ends of the split printing box (2) at positions corresponding to the reciprocating correction frame (523). The top of the fixed-discharge matching box (511) and the split printing box (2) are welded with a split base (526), ​​and the top of the split printing box (2) is fitted with a feeding processing box (527) at the position corresponding to the split base (526). An electromagnetic processing valve (528) is embedded at one end of the feeding pipe (518). The transfer grinding roller (510), grinding coupling roller (512) and pressing grinding roller (515) are all rotatably mounted inside the reciprocating integration frame (509), and the output shaft of the processing motor (516) is engaged with one end of the transfer grinding roller (510), grinding coupling roller (512) and pressing grinding roller (515).

5. The offset printing equipment for green printing according to claim 4, characterized in that, The split printing box (2) is fitted with a drying box (529) on its inner side, and UV curing units (530) are installed at equal intervals on the inner side of the drying box (529). The drying box (529) has several airflow circulation pipes (531) that are equidistant from the top and bottom, and the heat exchange limiting roller (504) has an external exhaust pipe (532) that is connected through the inside. The inner side of the external exhaust pipe (532) is connected to a double-inlet pipe (533). The split printing box (2) is equipped with a drying electric heating circulation box (534) at one end corresponding to the airflow circulation pipe (531) and the double injection air inlet pipe (533). An air intake fan (535) is embedded at one end of the airflow circulation pipe (531) and the double injection air inlet pipe (533). The bottom end of the scraping limit frame (517) is attached to the outer end of the pressing and grinding roller (515), and the top end of the reciprocating correction frame (523) is attached to the bottom of the pressure sensor (525).

6. The offset printing equipment for green printing according to claim 5, characterized in that, The top end of the feeding processing pipe (518) is installed through the bottom of the feeding processing box (527), and the air circulation pipe (531), the external exhaust pipe (532) and the dual injection air inlet pipe (533) are all installed through one end of the drying electric heating circulation box (534); The input terminals of the limit traction cylinder (501), reciprocating electric slide rail (508), processing motor (516), counter-pressure cylinder (519), pressure sensor (525), electromagnetic processing valve (528), UV curing unit (530), drying electric heating circulation box (534) and air intake fan (535) are all electrically connected to the output terminal of the external controller. The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

7. The offset printing equipment for green printing according to claim 6, characterized in that, The isolation dust removal box (3) is equipped with a purification multi-stage assembly (6) at one end; The purification multi-traction assembly (6) includes a fixed conveyor belt (601); A fixed conveyor belt (601) is installed at one end of the inner side of the isolation dust removal box (3), and a pressure-pair electric push rod (602) is symmetrically snapped into the inner side of the isolation dust removal box (3). One end of the pressing electric push rod (602) is equipped with a pressing processing frame (603), and one end of the pressing processing frame (603) is equipped with a linkage motor (604) through a motor mount. The output shaft of the linkage motor (604) is engaged with a cleaning alignment roller (605), and an electrostatic adsorption sleeve (606) is sleeved on the side end of the cleaning alignment roller (605). The inner side of the pressing and processing frame (603) is symmetrically equipped with cleaning electric slide rails (607), and a cleaning scraper (608) is installed at one end of the cleaning electric slide rail (607) through the slide rail seat. A vacuum cleaner (609) is installed at one end of the isolation dust removal box (3), and a vacuum pipe (610) is connected through the top of the pressing and processing frame (603). The isolation dust removal box (3) is equipped with a liquid injection operation box (611) at one end, and a liquid pump (612) is installed on both sides of one end of the isolation dust removal box (3) through a motor base. One end of the liquid injection operation box (611) is symmetrically connected to a spray pipe (613).

8. The offset printing equipment for green printing according to claim 7, characterized in that, One end of the spray pipe (613) is fitted with a spray head (615) via an adapter. A separation treatment box (616) is installed inside the isolation dust removal box (3) at the position corresponding to the spray head (615), and an electric heating dryer (617) is symmetrically installed inside the separation treatment box (616). One of the traction control boxes (4) has several pressing hydraulic cylinders (618) installed at equal intervals on its inner side, and the other traction control box (4) has several tensioning electric push rods (619) installed at equal intervals on its inner side. The pressing and processing rack (603) is placed inside the isolation dust removal box (3), and the cleaning scraper (608) is slidably installed inside the pressing and processing rack (603).

9. A lithographic printing device for green printing according to claim 8, characterized in that, The pressing hydraulic cylinder (618) and the tensioning electric push rod (619) are equipped with a processing fixing block (620) at one end, and a pressure fixing rod (621) is rotatably installed at one end of the processing fixing block (620). A laser detector (622) is snapped into the inner side of the traction control box (4) at the position corresponding to the pressing hydraulic cylinder (618), and a material receiving electric slide rail (623) is installed on one side of the top of the bottom support frame (1). The top of the receiving electric slide rail (623) is equipped with a receiving operation frame (624) via a slide rail seat. One end of the receiving operation frame (624) is equipped with a receiving motor (625) via a motor seat. The output shaft of the receiving motor (625) is engaged with a receiving operation rod (614). One end of the vacuum cleaner (609) is connected to one end of the suction pipe (610) via an adapter, and one end of the liquid pump (612) is connected to one end of the spray pipe (613) via an adapter. The spray pipe (613) is installed through the top of the partitioned treatment box (616).

10. A green offset printing equipment according to claim 9, characterized in that, The receiving operation frame (624) is slidably installed on the top of the bottom support frame (1); The input ends of the fixed conveyor belt (601), the pressure push rod (602), the linkage motor (604), the cleaning electric slide rail (607), the vacuum cleaner (609), the liquid pump (612), the electric heating dryer (617), the pressing hydraulic cylinder (618), the tensioning electric push rod (619), the laser detector (622), the receiving electric slide rail (623), and the receiving motor (625) are all electrically connected to the output end of the external controller.

Images