High-definition digital net-hanging flexographic printing machine

Abstract

The utility model discloses a high-definition digital screen-hanging flexographic printing machine which comprises twelve printing units and a winding unit, four guide rods are installed on the inner wall of each printing unit, an ink dyeing roller is installed on the guide rod on the left side, a printing plate roller is arranged on each of the two guide rods in the middle, and an extrusion roller is installed on the guide rod on the right side. A light box is installed on the inner wall of the printing unit, a rotating disc is arranged in the winding unit, two guide rollers and two winding rollers are arranged on the rotating disc, a second air cylinder is installed on the inner wall of the right side of the winding unit and connected with a cutter, the first air cylinder lifts the two forme rollers respectively, the positions of the two forme rollers are replaced, and double-face printing is achieved. The ultraviolet lamp tube and the reflective mirror in the lamp box focus ultraviolet rays on printed printing materials, printing ink is rapidly cured, the printing quality is improved, the second air cylinder pushes the cutter to rapidly cut off the printing materials on one winding roller, the other winding roller conducts winding, automatic roll changing is achieved without shutdown, and the printing efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of printing technology, and in particular to a high-definition digital screen flexographic printing machine. Background Art

[0002] A flexographic printing machine is a printing device, usually used for printing packaging, labels, paper and other materials. A digital screen flexographic printing machine combines the advantages of digital technology and flexographic printing to achieve high-quality printing. It usually uses digital technology to make drawings, then converts the image file into digital data that can be used for printing, and then uses the screen technology to transfer the information in the image file to the printing plate. In this process, a high-precision printing head is used to transfer the information of the image file to the printing plate. This printing head usually consists of multiple nozzles. The image file is transferred to the printing plate and then printed by a flexographic printing machine. At present, during the printing process, a flexographic printing machine generally installs a plate roller for single-sided printing, and uses manual replacement of the plate roller for double-sided printing. The replacement process wastes human resources and takes time, reducing the printing rate; and after each printing unit prints the substrate, it directly enters the next printing unit to continue printing, without curing the ink printed on the substrate, and the printing quality and durability are poor; and when the winding roller rewinds the substrate, when one roller is completed, it is generally stopped or slowed down, and then the winding roller is replaced manually, which affects the printing efficiency. Utility Model Content

[0003] The present application provides a high-definition digital screen flexographic printing machine, which is provided with a support frame, on which two printing plate rollers are installed, and the two printing plate rollers are respectively raised and lowered by cylinder 1, and the positions of the two printing plate rollers are directly changed to realize double-sided printing, saving human resources and time resources; the printing machine is provided with a light box in each printing unit, and the ultraviolet rays are focused and irradiated onto the printed printing material through the ultraviolet lamp tube and reflector in the light box, so that the ink thereon is quickly solidified, thereby improving the printing quality and durability; the flexographic printing machine is provided with two winding rollers in the winding unit, and the printing material on one winding roller is quickly cut off by a cutter pushed by cylinder 2, and then the printing material is wound by the other winding roller, so that automatic roll changing without stopping the machine is realized, thereby saving time and improving printing efficiency.

[0004] The present application provides a high-definition digital hanging screen flexographic printing machine, comprising: a printing unit and a winding unit, the printing unit comprises twelve, the twelve printing units are connected in sequence, four guide rods are installed on the inner wall of each printing unit, an ink roller is installed on the left guide rod, an ink box is arranged below the ink roller, an ink scraper is arranged on the periphery of the ink roller, a plate roller is arranged on each of the two middle guide rods, a printing plate roller is wrapped on each printing plate roller, the printing plate is sprayed by multiple nozzles to form a plurality of convex blocks, the two printing plate rollers are installed on a support frame, the support frame is fixed on the inner wall of the printing unit, a telescopic rod is connected to each end of the guide rod of each printing plate roller, each telescopic rod is connected to a cylinder 1, each cylinder 1 is fixed on the inner wall of the printing unit, an extrusion roller is installed on the right guide rod, the extrusion roller is close to the printing plate roller, the ink roller, the printing plate roller and the extrusion roller are connected to the same variable speed motor, a light box is installed on the inner wall of the printing unit opposite to the extrusion roller, an ultraviolet lamp is installed in the light box, and a reflector is installed in the light box;

[0005] A turntable is arranged in the winding unit, a rotating cylinder is installed in the turntable, two guide rollers and two rotating shafts are arranged on the turntable, the two guide rollers and the two rotating shafts are cross-distributed, a winding roller is installed on each rotating shaft, and the two winding rollers are respectively connected to a servo motor. A cylinder 2 is installed on the inner wall on the right side of the winding unit, and the cylinder 2 is connected to a cutting knife;

[0006] The printing unit and the winding unit are electrically connected to a PLC controller, and the variable speed motor, the servo motor, the cylinder one, the cylinder two and the rotary cylinder are electrically connected to the PLC controller.

[0007] Furthermore, two iron rods are arranged at both ends of the guide rod of the inking roller, one end of the two iron rods supports the same ink scraper, and the ink scraper is close to the inking roller.

[0008] Furthermore, the support frame is in a "Y" shape, and the two printing plate rollers move to the branches of the support frame accordingly.

[0009] Furthermore, the same transmission device is used between the inking roller, the printing plate roller and the squeezing roller. The transmission device is connected to a variable speed motor. A gear 1 is provided at the output end of the variable speed motor. A gear 2 is provided at one end of the inking roller, the printing plate roller and the squeezing roller. Gear 1 is connected to each gear 2 by a toothed chain.

[0010] Furthermore, the rotating cylinder can adjust the rotation angle of the turntable.

[0011] Furthermore, the PLC controller is provided with a display screen and a plurality of operation buttons.

[0012] It can be seen from the above technical scheme that the present application provides a high-definition digital screen flexographic printing machine, including: a printing unit and a winding unit, the printing unit includes twelve, the twelve printing units are connected in sequence, four guide rods are installed on the inner wall of each printing unit, an ink roller is installed on the left guide rod, an ink box is arranged under the ink roller, an ink scraper is arranged outside the ink roller, a printing plate roller is arranged on each of the two middle guide rods, each printing plate roller is wrapped with a printing plate, and the printing plate is sprayed by multiple nozzles to form a number of bumps, the two printing plate rollers are installed on a support frame, the support frame is fixed on the inner wall of the printing unit, each plate roller The guide rod of each plate roller is connected to a telescopic rod at both ends, each telescopic rod is connected to a cylinder, and each cylinder is fixed on the inner wall of the printing unit. A squeezing roller is installed on the rod, the squeezing roller is close to the plate roller, the ink dyeing roller, the plate roller and the squeezing roller are connected to the same variable speed motor, a light box is installed on the inner wall of the printing unit opposite to the squeezing roller, an ultraviolet lamp is installed in the light box, a reflector is installed in the light box, a turntable is arranged in the winding unit, a rotating cylinder is installed in the turntable, two guide rollers and two rotating shafts are arranged on the turntable, the two guide rollers and the two rotating shafts are cross-distributed, a winding roller is installed on each rotating shaft, the two winding rollers are respectively connected to a servo motor, a cylinder 2 is installed on the right inner wall of the winding unit, the cylinder 2 is connected to a cutting knife, the printing unit and the winding unit are electrically connected to a PLC controller, and the variable speed motor, the servo motor, the cylinder 1, the cylinder 2 and the rotating cylinder are electrically connected to the PLC controller;Digital technology is used to produce images for printing, and then the image files are converted into digital data that can be used for printing. The information in the image files is then transferred to the printing plate using the screen hanging technology. The twelve printing units of the flexographic printing machine are then used to print in sequence. Each printing unit prints a single color. The number of printing units is selected according to demand. Before the printing plate roller is wrapped around the printing plate, the nozzle of the inkjet system is used to spray the printing plate to form the convex blocks that need to be printed. The printing plate is then wrapped around the printing plate roller for easy printing. During the printing process, the ink roller rotates and is stained with ink in the ink tank. The excess ink on the ink roller is then scraped off using the ink scraper, and the ink on the ink roller is evenly distributed. The ink roller rotates in the same direction as the printing plate roller. During the rotation, the ink on the ink roller is transferred to the printing plate roller. The PLC controller controls the cylinder to push each telescopic rod to make the two printing plate rollers rise or fall respectively, thereby directly changing the positions of the two printing plate rollers to achieve double-sided printing, saving human resources and time resources. The PLC controller controls and adjusts the speed of the variable speed motor to achieve printing on the flexographic printing machine. The speed changes, the variable speed motor drives the ink roller, the plate roller and the squeeze roller to rotate at the same speed, the printing material passes through the middle of the plate roller and the squeeze roller, and the plate roller and the squeeze roller rotate in opposite directions to squeeze each other, so that the ink information on the convex block is printed on the printing material. During the printing process of the plate roller, the ultraviolet light is focused and irradiated on the printed printing material through the ultraviolet lamp and the reflector in the light box, so that the ink on it is quickly solidified, and the printing quality and durability are improved. The PLC controller controls the rotary cylinder and the servo motor to open, and the rotary cylinder drives the turntable to rotate a certain angle, adjusts the position of the guide roller and the shaft on the turntable, and the servo motor drives the corresponding winding roller to rotate, and the printing material after printing is wound. When the winding of one winding roller is completed, the PLC controller controls the second cylinder to push the cutter forward, and the printing material on the winding roller is quickly cut, and then the printing material is wound by another winding roller, so as to realize automatic roll change without stopping the machine, thereby saving time and improving printing efficiency. The PLC controller controls the working status of each motor and each cylinder, and then performs printing work. ;

[0013] In summary, the beneficial effects produced by this application are as follows:

[0014] 1. The flexographic printing machine is provided with a support frame, on which two printing plate rollers are installed. The two printing plate rollers are raised and lowered respectively by using a cylinder 1, and the positions of the two printing plate rollers are directly changed to realize double-sided printing, saving human resources and time resources.

[0015] 2. The printing machine is equipped with a light box in each printing unit. Through the ultraviolet lamp and reflector in the light box, the ultraviolet rays are focused and irradiated onto the printed substrate, which quickly solidifies the ink on it and improves the printing quality and durability.

[0016] 3. The flexographic printing machine is equipped with two winding rollers in the winding unit. The cutter is pushed by cylinder 2 to quickly cut the printing material on one winding roller, and then the printing material is wound by the other winding roller, realizing automatic roll changing without stopping the machine, thereby saving time and improving printing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of this application.

[0019] Figure 2 This is the general structure of the application work.

[0020] Figure 3 This is a schematic diagram of the transmission structure of this application.

[0021] Figure 4 This is a schematic diagram of the printed version of this application.

[0022] Figure 5 This is a schematic diagram of the PLC controller structure for this application.

[0023] Illustration Description:

[0024] Among them, 1-printing unit, 2-winding unit, 3-inking roller, 4-plate roller, 41-bump, 42-printing plate, 5-squeezing roller, 6-ink box, 7-scraper, 8-support frame, 9-cylinder one, 10-telescopic rod, 11-speed motor, 12-light box, 13-reflector, 14-lamp tube, 15-turntable, 16-rotating cylinder, 17-winding roller, 18-guide roller, 19-cylinder two, 20-servo motor, 21-printing material, 22-PLC controller, 23-transmission device, 231-gear one, 232-gear two, 233-tooth chain, 24-nozzle. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] See the above technical solution for Figure 1-Figure 5 .

[0027] Embodiment 1:

[0028] A high-definition digital screen flexographic printing machine comprises: a printing unit 1 and a winding unit 2, wherein the printing unit 1 comprises twelve, the twelve printing units 1 are connected in sequence, digital technology is used to produce an image for printing, and then the image file is converted into digital data that can be used for printing, and then the information in the image file is transferred to a printing plate 42 by using the screen technology, and then the twelve printing units 1 of the flexographic printing machine are used to print in sequence, each printing unit 1 prints a single color, and the number of printing units 1 is selected according to demand, four guide rods are installed on the inner wall of each printing unit 1, an ink roller 3 is installed on the left guide rod, an ink tank 6 is arranged below the ink roller 3, the ink roller 3 is close to the printing plate roller 4, an ink scraper 7 is arranged on the periphery of the ink roller 3, and the ink roller 3 rotates The ink in the ink box 6 is moved, and then the excess ink on the ink roller 3 is scraped off by the scraper 7, and the ink on the ink roller 3 is evenly distributed. The ink roller 3 rotates in the same direction as the plate roller 4, and the ink on the ink roller 3 is transferred to the plate roller 4 during the rotation. A plate roller 4 is provided on each of the two middle guide rods, and each plate roller 4 is wrapped with a printing plate 42. The printing plate 42 is sprayed by multiple nozzles 24 to form a plurality of convex blocks 41. Before the plate roller 4 is wrapped with the printing plate 42, the nozzle 24 of the spraying system sprays the printing plate 42 to form the convex blocks 41 to be printed, and then the printing plate 42 is wrapped on the plate roller 4 for convenient printing. The two plate rollers 4 are installed on a support frame 8, and the support frame 8 is fixed in the printing unit 1. On the wall, each of the two ends of the guide rod of each printing plate roller 4 is connected to a telescopic rod 10, each telescopic rod 10 is connected to a cylinder 9, each cylinder 9 is fixed to the inner wall of the printing unit 1, and the cylinder 9 is controlled by the PLC controller 22 to push each telescopic rod 10, so that the two printing plate rollers 4 rise or fall respectively, and then directly change the positions of the two printing plate rollers 4, so as to realize double-sided printing, save human resources and time resources, and a squeezing roller 5 is installed on the right guide rod, and the squeezing roller 5 and the printing plate roller 4 rotate in the opposite direction to squeeze each other, so that the ink on the protrusion 41 is printed on the printing material 21, and the squeezing roller 5 is close to the printing plate roller 4, and the ink dyeing roller 3, the printing plate roller 4 and the squeezing roller 5 are connected to the same variable speed motor 11, and the variable speed motor 1 is controlled and adjusted by the PLC controller 22. 1, thereby realizing the change of the printing speed of the flexographic printing machine, the variable speed motor 11 drives the inking roller 3, the plate roller 4 and the squeezing roller 5 to rotate at the same speed, the printing material 21 passes through the middle of the plate roller 4 and the squeezing roller 5, and the plate roller 4 and the squeezing roller 5 rotate in opposite directions to squeeze each other, so that the ink on the protrusion 41 is printed on the printing material 21, and a light box 12 is installed on the inner wall of the printing unit 1 opposite to the squeezing roller 5, and an ultraviolet lamp 14 is installed in the light box 12, and a reflector 13 is installed in the light box 12. During the printing process of the plate roller 4, the ultraviolet rays are focused and irradiated onto the printed printing material 21 through the ultraviolet lamp 14 and the reflector 13 in the light box 12, so that the ink on the printing material 21 is quickly cured, thereby improving the printing quality and durability;

[0029] A turntable 15 is arranged in the winding unit 2, and a rotating cylinder 16 is installed in the turntable 15. The rotation angle of the rotating cylinder 16 is adjusted by the PLC controller 22, thereby driving the turntable 15 to rotate. Two guide rollers 18 and two rotating shafts are arranged on the turntable 15. The two guide rollers 18 and the two rotating shafts are cross-distributed. The turntable 15 rotates a certain angle to adjust the position of the guide rollers 18 and the rotating shafts on the turntable 15. A winding roller 17 is installed on each rotating shaft. Each winding roller 17 is stained with glue to facilitate the rapid winding of the printing material 21 on the winding roller 17 after being cut. The two winding rollers 17 are each connected to a servo motor 20, and the PLC controller 22 controls the rotation of the rotating cylinder 16. The controller 22 controls the servo motor 20 to turn on, and the servo motor 20 drives the corresponding winding roller 17 to rotate, and the printing material 21 after printing is wound up. The guide roller 18 assists the winding roller 17 to support the printing material 21 and assists in winding up. The right inner wall of the winding unit 2 is installed with a cylinder 2 19, and the cylinder 2 19 is connected to a cutter. When one winding roller 17 is wound up, the PLC controller 22 controls the cylinder 2 19 to push the cutter forward, and the printing material 21 on the winding roller 17 is quickly cut off, and then the printing material 21 is wound up by another winding roller 17, so as to realize automatic roll change without stopping the machine, thereby saving time and improving printing efficiency.

[0030] The printing unit 1 and the winding unit 2 are electrically connected to a PLC controller 22, and the variable speed motor 11, the servo motor 20, the cylinder 1 9, the cylinder 2 19 and the rotary cylinder 16 are electrically connected to the PLC controller 22. The PLC controller 22 controls the working status of each motor and each cylinder to perform printing.

[0031] As a preferred embodiment, two iron rods are arranged at both ends of the guide rod of the ink roller 3, and one end of the two iron rods supports the same scraper plate 7. The scraper plate 7 is close to the ink roller 3, and the scraper plate 7 is used to scrape off the excess ink on the ink roller 3 and make the ink on the ink roller 3 evenly distributed.

[0032] As a preferred embodiment, the support frame 8 is in a "Y" shape, and the two plate rollers 4 move to the branches of the support frame 8 accordingly, one plate roller 4 moves to the upper branch of the support frame 8, and the other plate roller 4 moves to the lower branch of the support frame 8. The two plate rollers 4 are raised and lowered respectively by using a cylinder 9, and the positions of the two plate rollers 4 are directly changed to achieve double-sided printing.

[0033] As a preferred embodiment, the same transmission device 23 is used between the ink roller 3, the plate roller 4 and the squeeze roller 5. The transmission device 23 is connected to a variable speed motor 11. A gear 1 231 is provided at the output end of the variable speed motor 11. A gear 2 232 is provided at one end of the ink roller 3, the plate roller 4 and the squeeze roller 5. The gear 1 231 is connected to each gear 2 232 by a tooth chain 233. The PLC controller 22 controls the variable speed motor 11 to turn on, and the gear 1 231 at the output end of the variable speed motor 11 rotates, and the gear 2 232 is driven to rotate by the tooth chains 233 connected to the gear 1 231, thereby making the ink roller 3, the plate roller 4 and the squeeze roller 5 rotate synchronously.

[0034] As a preferred embodiment, the rotating cylinder 16 can adjust the rotation angle of the turntable 15. The rotation of the rotating cylinder 16 drives the turntable 15 to rotate, so that the turntable 15 rotates a certain angle, and then adjusts the position of the guide roller 18 and the rotating shaft on the turntable 15, so that the winding roller 17 on the rotating shaft can wind up the printing material 21 after printing.

[0035] As a preferred embodiment, the PLC controller 22 is provided with a display screen and a plurality of operation buttons. The display screen displays the printing color source of each printing unit 1 for easy viewing, and each operation button controls the working state of each motor and each cylinder respectively.

[0036] In the description of the present invention, it should be understood that the terms "left side", "right side", "middle", "top", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0037] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.

[0038] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A high-definition digital screen flexographic printing machine, characterized in that: include: A printing unit (1) and a winding unit (2), wherein the printing units (1) include twelve, the twelve printing units (1) are connected in sequence, four guide rods are installed on the inner wall of each printing unit (1), an ink roller (3) is installed on the left guide rod, an ink tank (6) is arranged below the ink roller (3), an ink scraper (7) is arranged on the periphery of the ink roller (3), a printing plate roller (4) is arranged on each of the two middle guide rods, each printing plate roller (4) is wrapped with a printing plate (42), the printing plate (42) is sprayed by multiple nozzles (24) to form a plurality of protrusions (41), the two printing plate rollers (4) are installed on a support frame (8), and the support frame (8) is fixed on the printing plate roller (4). On the inner wall of the brush unit (1), each of the two ends of the guide rod of the printing plate roller (4) is connected to a telescopic rod (10), each of the telescopic rods (10) is connected to a cylinder (9), each of the cylinders (9) is fixed to the inner wall of the printing unit (1), a squeezing roller (5) is installed on the right guide rod, the squeezing roller (5) is close to the printing plate roller (4), the ink dyeing roller (3), the printing plate roller (4) and the squeezing roller (5) are connected to the same variable speed motor (11), a light box (12) is installed on the inner wall of the printing unit (1) opposite to the squeezing roller (5), an ultraviolet lamp (14) is installed in the light box (12), and a reflector (13) is installed in the light box (12); A turntable (15) is arranged in the reeling unit (2), a rotating cylinder (16) is installed in the turntable (15), two guide rollers (18) and two rotating shafts are arranged on the turntable (15), the two guide rollers (18) and the two rotating shafts are cross-distributed, a reeling roller (17) is installed on each rotating shaft, the two reeling rollers (17) are respectively connected to a servo motor (20), a cylinder 2 (19) is installed on the right inner wall of the reeling unit (2), and the cylinder 2 (19) is connected to a cutting knife; The printing unit (1) and the winding unit (2) are electrically connected to a PLC controller (22); the variable speed motor (11), the servo motor (20), the cylinder one (9), the cylinder two (19) and the rotary cylinder (16) are electrically connected to the PLC controller (22).

2. The high-definition digital screen flexographic printing machine according to claim 1, characterized in that: Two iron rods are arranged at both ends of the guide rod of the ink dyeing roller (3), and one end of the two iron rods supports the same ink scraping plate (7), and the ink scraping plate (7) is close to the ink dyeing roller (3).

3. The high-definition digital screen flexographic printing machine according to claim 1, characterized in that: The support frame (8) is in a "Y" shape, and the two printing plate rollers (4) move to branches of the support frame (8) accordingly.

4. The high-definition digital screen flexographic printing machine according to claim 1, characterized in that: The same transmission device (23) is used between the ink dyeing roller (3), the printing plate roller (4) and the squeezing roller (5); the transmission device (23) is connected to the variable speed motor (11); a gear 1 (231) is provided at the output end of the variable speed motor (11); a gear 2 (232) is provided at one end of each of the ink dyeing roller (3), the printing plate roller (4) and the squeezing roller (5); and the gear 1 (231) and each of the gears 2 (232) are connected by a toothed chain (233).

5. The high-definition digital screen flexographic printing machine according to claim 1, characterized in that: The rotating cylinder (16) can adjust the rotation angle of the rotating disk (15).

6. The high-definition digital screen flexographic printing machine according to claim 1, characterized in that: The PLC controller (22) is provided with a display screen and a plurality of operation buttons.

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