Green Digital Printing System and Application Methods

Abstract

This invention discloses a green digital printing system and application method, including a worktable, a feeding unit and an output unit disposed at both ends of the worktable, and further including: a cleaning unit disposed on the worktable for cleaning and / or drying the surface of the material to be printed; a green inkjet assembly disposed on the worktable for printing operations on the surface of the material to be printed; and a control terminal communicatively connected to the green inkjet assembly and the cleaning unit; wherein the cleaning unit and the green inkjet assembly both reciprocate in the extension direction of the worktable surface through a displacement unit to complete the corresponding cleaning and / or drying and printing operations; a camera assembly is disposed on the displacement unit. This invention provides a green digital printing system and application method that can perform cleaning / drying operations on the surface of the material to be printed before / after the green inkjet assembly operates, to ensure that the printing effect and accuracy meet the requirements.

Description

Technical Field

[0001] This invention relates to the field of digital printing. More specifically, this invention relates to a green digital printing system and its application method. Background Technology

[0002] Inkjet green digital printing equipment is a modern printing device that combines computer, digital image processing, electronics, mechanics, and optics technologies. It features plateless printing, on-demand printing, personalized printing, and variable data printing, meeting the needs of various short, medium, and long-run printing. It not only achieves high-definition, high-resolution printing results but also prints on various substrates, such as paper, fabric, and plastic. Because it uses water-based inks, this printing press is more environmentally friendly and produces no pollution.

[0003] However, in existing printing systems, due to transmission or storage reasons, some dust or other impurities may adhere to the surface of the material to be printed. These dust or other impurities can affect the subsequent printing effect. That is, water-based ink may act directly on the dust or other impurities instead of on the surface of the material to be printed. This makes it impossible for the printing accuracy of the surface of the material to meet the actual requirements after the dust or other impurities are removed. At the same time, due to its structural layout, the existing printing system does not have a corresponding anti-duplicate printing judgment mechanism, which may lead to duplicate printing, wasting ink and affecting the yield rate. Summary of the Invention

[0004] One object of the present invention is to solve at least the above-mentioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages of the present invention, a green digital printing system is provided, including a worktable, a feeding unit and a discharging unit disposed at both ends of the worktable, and further comprising: A blowing unit set on a workbench for cleaning and / or drying the surface of the material to be printed; A green inkjet unit set on a worktable for printing on the surface of the material to be printed; A control terminal that communicates with the green inkjet assembly and the purge unit; The blowing unit and the green inkjet assembly reciprocate in the extension direction of the worktable through the displacement unit to complete the corresponding blowing and / or drying and printing operations. The displacement unit is equipped with a camera component; The control terminal is communicatively connected to the camera assembly and the displacement unit, respectively.

[0006] Preferably, the worktable is provided with multiple conveyor rollers; Multiple recessed windows, aligned with the layout direction of the conveyor rollers, are provided between adjacent conveyor rollers. The sunken window is provided with a suction component and / or a suction cup component below it.

[0007] Preferably, the feeding unit has an irregularly shaped limiting rod on the side that cooperates with the worktable; A limit plate is slidably installed along the length of the worktable, and an electric push plate for positioning and shaping the material is installed opposite the limit plate.

[0008] Preferably, the displacement unit comprises: Cable trays are positioned opposite each other on the left and right sides of the workbench surface; Two load-bearing beams are installed on the cable tray; Movable component I and movable component II are installed on the load-bearing beam and are used to drive the green inkjet assembly and the purging unit to move back and forth along the width of the worktable, respectively. The purging unit is located at the front end and / or rear end of the green inkjet assembly.

[0009] Preferably, the purging unit includes: A cleaning roller and / or blower module I located at the front end of the green inkjet assembly; Blower module II is located at the rear end of the green inkjet assembly; Each blower module includes: at least one air duct and a fan connected to the air duct; Each air duct is equipped with at least one air duct that matches its length direction, and each air duct edge is provided with an inclined part that matches its air outlet direction.

[0010] Preferably, the front end of the blower module I is further provided with a blower module III that spatially matches the width direction of the workbench; The blower module I includes: a blower duct I that is spatially parallel to the width direction of the workbench; Air duct II is parallel to the length of the workbench in space.

[0011] Preferably, the green inkjet assembly includes: a housing and a plurality of ink cartridges disposed within the housing, and an inkjet mechanism communicating with the ink cartridges; The outer casing is provided with multiple quick connectors that communicate with the interior of each ink cartridge. Each ink cartridge is equipped with an ink level sensing mechanism that communicates with the control module.

[0012] An application method for a green digital printing system includes: Step 1: Preparation stage before printing; Step two, the transportation stage of the material to be printed, includes: the sensors on the workbench detect in real time whether the material to be printed has reached the designated position and send the data to the control terminal. When the control terminal detects that the material has reached the designated position, it controls the conveyor roller to be in a non-working state and the material to be printed to be in a stationary state. The control terminal uses an electric push rod to push the material to be printed toward the position of the limit plate, so as to fix the position of the material to be printed. Step three, the pattern printing stage, includes: S30: The camera component acquires a real-time image of the surface of the material to be printed and sends it back to the control terminal. The recognition software inside the control terminal determines whether the material to be printed has been printed. At the same time, the control terminal displays the real-time image and synchronizes it with the operation center. S31. If the material to be printed is not printed, the motor of the moving component II is turned on by the control terminal. The moving component II moves laterally and reciprocates along the load-bearing beam, so that the blowing unit moves back and forth above the material to be printed. While moving, the control terminal puts the blowing module I or the cleaning roller into working state to remove the adhering substances on the surface of the material to be printed. S32. After the purging unit completes the purging operation for the predetermined time, the motor of the moving component I is turned on through the control terminal. The moving component I moves laterally and reciprocates along the load-bearing beam, so that the green inkjet component moves back and forth above the material to be printed, and the printing operation is started. The green inkjet unit controls the inkjet mechanism connected to different ink cartridges to spray green and environmentally friendly water-based ink onto the surface of the material to be printed, based on the data parameters set in the control terminal, to complete the pattern printing. S33. After the pre-approval time for the printing operation is completed, the control terminal puts the air blowing module II into working state to air dry the surface of the material to be printed.

[0013] The present invention has at least the following beneficial effects: by setting a matching blow-off unit at the front end of the green inkjet assembly, the surface of the material to be printed can be cleaned before the green inkjet assembly starts working, so as to ensure that the printing effect meets the requirements. At the same time, by setting a matching blow-off unit at the rear end of the green inkjet assembly, the surface of the material to be printed can be dried after the green inkjet assembly starts working, so as to ensure that the subsequent operations will not affect the printing effect. The cooperation between the camera assembly and the control terminal can prevent duplicate printing.

[0014] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the components on the workbench of the green digital printing system of the present invention; Figure 2 This is a schematic diagram of the structure of the green inkjet assembly and the moving assembly I of the present invention. Figure 3 This is a side view of the bottom structure of the air duct of the present invention; Figure 4 This is a schematic diagram of the structure of the air duct of the present invention from the front view; Figure 5 This is a schematic diagram of the structure of the workbench (excluding the green inkjet assembly, the purging unit, and the displacement unit) and the feeding unit of the present invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0017] A green digital printing system, such as Figure 1-2 As shown, it includes a workbench 1, a feeding unit 2 and a discharging unit (not shown) disposed at both ends of the workbench 1, and also includes: A cleaning unit 3 is installed on the workbench 1 to clean and / or dry the surface of the material to be printed; A green inkjet unit 4 is set on the worktable 1 to perform printing operations on the surface of the material to be printed; A control terminal (not shown) that is communicatively connected to the green inkjet assembly 4 and the purge unit 3; The blowing unit 3 and the green inkjet assembly 4 reciprocate in the extension direction of the worktable 1 through the displacement unit 5 to complete the corresponding blowing and / or drying and printing operations. The displacement unit 5 is equipped with a camera component 6; The control terminal is communicatively connected to the camera assembly 6 and the displacement unit 5. This solution uses the control terminal to precisely control each automated module in the equipment. Simultaneously, corresponding sensors can be installed on the worktable to acquire the material's position in real time, switching the working states of the blowing unit 3 and the green inkjet assembly 4. The camera assembly 6 collects information about the surface of the material to be printed before printing, allowing the control terminal to determine whether printing is necessary. It can also compare the printed effect with a preset pattern on the computer after printing to determine if the effect meets requirements. Compared to existing technologies, this solution, by setting a corresponding blowing unit 3 at the front end of the green inkjet assembly 4, cleans the surface of the material before printing, ensuring the printing effect meets requirements. Simultaneously, by setting a corresponding blowing unit 3 at the rear end of the green inkjet assembly 4, it dries the surface of the material after printing, ensuring that subsequent operations do not affect the printing effect. The cooperation between the camera assembly 6 and the control terminal prevents duplicate printing.

[0018] In another embodiment, such as Figure 1 , Figure 5 As shown, the workbench 1 is provided with a plurality of conveying rollers 10, the conveying surface of each conveying roller 10 is flush with the surface of the workbench 1, and the workbench 1 is provided with a window 15 for display. Multiple sunken windows 11 are provided between adjacent conveyor rollers 10, with the layout direction of the conveyor rollers 10 being consistent. The recessed window 11 is equipped with a suction assembly (not shown) and / or a suction cup assembly 12. In this design, the conveyor roller 10 is used to transfer the material to be printed on the worktable 1. The suction assembly (not shown) and / or the suction cup assembly 12 in the recessed window 11 are used to limit the position of the material to be printed by suction or suction force when the material to be printed is kept stationary during printing, preventing positional changes during the printing process that would result in secondary printing or re-printing on the surface of the material, thus affecting the product yield.

[0019] In another embodiment, such as Figure 5 As shown, the feeding unit has an irregularly shaped limiting rod 20 on the side that cooperates with the worktable 1. A limiting plate 13 is slidably installed along the length of the workbench 1. Opposite the limiting plate is an electric push plate 14 for shaping the material. In practical applications, the material is shaped and output sequentially (single row, single) by the action of the irregularly shaped limiting rods to adapt to the conveying needs of different materials. The two irregularly shaped limiting rods are respectively hinged on both sides of the feeding unit. Their free ends are connected to the fixed plates on both sides of the feeding unit through elastic elements. In actual use, the width can be adjusted according to different needs. After compressing the elastic element to the predetermined position, the position of the irregularly shaped limiting rod is limited by the matching fixing mechanism (bolts, pins). The limiting plate can be directly set on the workbench or telescopically set on the workbench. When it is necessary to limit the position, the limiting plate is raised. The control module pushes the material to the position of the limiting plate through the electric push rod to complete the position limitation of the material. After the position limitation is completed, the limiting plate can remain in the original position or sink to be flush with the workbench as needed.

[0020] In another embodiment, such as Figure 1 , Figure 2 As shown, the displacement unit 5 includes: The cable trays 50, which are set on the left and right sides of the workbench 1, are used to raise the green inkjet assembly 4 and the blow-blow unit 3 to a predetermined position in space. Two load-bearing beams 51 are installed on the cable tray 50 to support the moving component I 52, moving component II, etc. The moving components I and II (not shown) are mounted on the load-bearing beam 51 and are used to drive the green inkjet assembly 4 and the blowing unit 3 to reciprocate along the width of the worktable 1. The structure of the moving component II can adopt other reciprocating mechanisms, and can directly apply a structure similar to that of the moving component I. In actual use, different moving components can be connected to the support beam 51 through the cooperating crossbeam 53. The connection method can be a sliding connection, that is, a cooperating wedge-shaped groove 54 is set on the support beam 51, and a slider (not shown) that cooperates with the wedge-shaped groove 54 is set at the bottom of the crossbeam 53. Each crossbeam 53 can be connected into an integrated structure through the connector 55. The linkage control is achieved through the cooperation of the motor and lead screw (or hydraulic cylinder) of the cooperating telescopic component 56. Alternatively, each crossbeam can be connected to a different power mechanism for separate control. The blowing unit 3 is located at the front end and / or rear end of the green inkjet assembly 4. In this design, by setting the blowing unit 3 at the front end of the green inkjet assembly 4, the dust on the surface of the material to be printed can be removed before printing. The blowing unit 3 is located at the rear end of the green inkjet assembly 4, which is used to directly air dry the ink on the surface of the material to be printed after printing, so as to ensure that ink bleeding will not occur in subsequent printing or stacking operations.

[0021] In another embodiment, such as Figures 1-4 As shown, the purging unit 3 includes: Cleaning roller and / or blowing module I located at the front end of green inkjet assembly 4; The blower module II 31 is located at the rear end of the green inkjet assembly 4; Each blower module includes: at least one air duct 32 and a blower (not shown) connected to the air duct. Each air duct is equipped with at least one air trough 33 that matches its length direction, and each air trough edge is provided with an inclined portion (not shown) that matches its air outlet direction. In this scheme, a fan is used to remove dust to prevent the material to be printed from flying up when printing film products. Compared with the existing large-area air outlet, this device adopts a linear blowing with an air trough structure. During the blowing process, it has greater force and smaller range. At the same time, during the blowing process, it can exert a surface pressing effect on the surface of the material to be printed to prevent it from flying up. The dust overflow range during the blowing process is more controllable, and the inclined structure design makes its air outlet direction and speed more controllable.

[0022] In another embodiment, the front end of the blower module I is further provided with a blower module III that spatially matches the width direction of the workbench 1; The blower module I includes: a blower duct I that is spatially parallel to the width direction of the workbench 1; Air duct II is parallel to the length of worktable 1 in space. In this scheme, by setting up air blowing module III (i.e., its air duct I is roughly the same width as worktable 1) to match the width of worktable 1, the dust on the surface of the material to be printed is initially swept over a large area, so that the floating dust on the surface can be removed. Then, the shorter air duct I (which is used to reverse the dust blown out by the front air blowing module III to prevent it from overflowing and affecting the printing effect) and air duct II (which is used to match the working direction of the green inkjet assembly. In actual application, it can maintain a small distance from the green inkjet assembly, that is, the front is swept and the back begins printing, to prevent the secondary adhesion of floating dust in the air from affecting the printing) are used to sweep the attached dust at a predetermined distance in front of the green inkjet assembly, so as to make the adhesion effect during printing better. In application, a cleaning roller can be set up to remove fine dust at a predetermined distance in front of the green inkjet assembly, thereby ensuring that the removal effect meets the usage requirements.

[0023] In another embodiment, such as Figure 2 As shown, the green inkjet assembly 4 includes: a housing 40 and a plurality of ink cartridges (not shown) disposed within the housing, and an inkjet mechanism (not shown) communicating with the ink cartridges. The outer casing is provided with multiple quick connectors 41 that communicate with the interior of each ink cartridge; Each ink cartridge is equipped with an ink level sensing mechanism (not shown) that communicates with the control module. The ink level sensing mechanism can be a liquid level gauge or a weight sensor located below the ink cartridge.

[0024] In this solution, the number of ink cartridges can be set according to the printing needs of the printing press. In actual application, when it is necessary to replace the ink in the monochrome ink cartridge or after printing is completed, the quick connector on each ink cartridge is connected to the rinsing unit. The rinsing liquid in the rinsing unit is used to rinse the residual ink in the monochrome ink cartridge. Then the pipeline of the drying module is connected to the quick connector to complete the drying process of the monochrome ink cartridge. During secondary printing or when ink is insufficient, the four primary color ink cartridges of CMYK are connected to the corresponding pipelines and quick connectors, and the primary color inks are drawn into the single color ink cartridges in different proportions. The primary color inks in the single color ink cartridges are then fully mixed by an electromagnetic stirrer. The color information of the ink in the corresponding monochrome ink cartridge is collected by the color sensor set in each ink cartridge and sent to the control module. If a primary color ink needs to be added, the working status of the solenoid valve and / or peristaltic pump at the bottom of the corresponding primary color ink cartridge is controlled to deliver the primary color ink into the ink cartridge, so as to complete the color regulation and adapt to the needs of different printing precision and color.

[0025] An application method for a green digital printing system includes: I. Preparation stage before printing S10. First, select the appropriate material to be printed according to the actual usage requirements, and transport the material to be printed to the worktable through the feeding unit, and transfer the material to be printed through the conveyor rollers on the worktable. S11. Next, the pattern data to be printed is transmitted to the control terminal via a data cable through the operation center. II. Transportation Stage of Materials to be Printed The sensors on the workbench detect in real time whether the material to be printed has reached the designated position and send the data to the control terminal. When the control terminal detects that the material has reached the designated position, it controls the conveyor roller to be in a non-working state, and the material to be printed is in a stationary state. The control terminal uses an electric push rod to push the material to be printed toward the position of the limit plate, so as to fix the position of the material to be printed. Once the position of the material to be printed is fixed, the control terminal puts the suction component and / or suction cup component into working state to adsorb the material to be printed, ensuring that its working position does not change during the printing process. This method is suitable for printing processes where the green inkjet component and the blowing unit move along the length of the worktable to complete the printing, and is suitable for thicker block materials. III. Pattern Printing Stage S30: The camera component acquires a real-time image of the surface of the material to be printed and sends it back to the control terminal. The recognition software inside the control terminal determines whether the material to be printed has been printed. At the same time, the control terminal displays the real-time image and synchronizes it with the operation center. S31. If the material to be printed is not printed, the motor of the moving component II is turned on by the control terminal. The moving component II moves laterally and reciprocates along the load-bearing beam, so that the blowing unit moves back and forth above the material to be printed. While moving, the control terminal puts the blowing module I or the cleaning roller into working state to remove the adhering substances on the surface of the material to be printed. S32. After the purging unit completes the purging operation for the predetermined time, the motor of the moving component I is turned on through the control terminal. The moving component I moves laterally and reciprocates along the load-bearing beam, so that the green inkjet component moves back and forth above the material to be printed, and the printing operation is started. The green inkjet unit controls the inkjet mechanism connected to different ink cartridges to spray green and environmentally friendly water-based ink onto the surface of the material to be printed, based on the data parameters set in the control terminal, to complete the pattern printing. S33. After the pre-approval time for the printing operation is completed, the control terminal puts the air blowing module II into working state to air dry the surface of the material to be printed. During the pattern printing stage, when the green inkjet unit is working, it can move along the length of the worktable by means of the corresponding telescopic components (motor and lead screw cooperation, hydraulic cylinder) and the mounting beam, so as to complete the printing of different positions on the surface of the material to be printed. After printing is completed, the green inkjet unit and the blowing unit return to the initial position. Alternatively, the position of the material to be printed and the green inkjet component can be changed by adjusting the working state of the conveyor roller (or switching the working state according to time or the working position of the green inkjet component) to complete the printing of different positions on the surface of the material to be printed. This method is suitable for printing on belt materials.

[0026] The above solution is merely an illustration of a preferred example and is not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0027] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. A green digital printing system, comprising a worktable, a feeding unit and a discharging unit disposed at both ends of the worktable, characterized in that, Also includes: A blowing unit set on a workbench for cleaning and / or drying the surface of the material to be printed; A green inkjet unit set on a worktable for printing on the surface of the material to be printed; A control terminal that communicates with the green inkjet assembly and the purge unit; The blowing unit and the green inkjet assembly reciprocate in the extension direction of the worktable through the displacement unit to complete the corresponding blowing and / or drying and printing operations. The displacement unit is equipped with a camera component; The control terminal is communicatively connected to the camera component and the displacement unit. The camera component acquires real-time images of the surface of the material to be printed and transmits them back to the control terminal so that the recognition software inside the control terminal can determine whether the material to be printed has been printed. The displacement unit includes: Cable trays are positioned opposite each other on the left and right sides of the workbench surface; Two load-bearing beams are installed on the cable tray; Movable component I and movable component II are installed on the load-bearing beam and are used to drive the green inkjet assembly and the purging unit to move back and forth along the width of the worktable, respectively. The purging unit is located at the front end and / or rear end of the green inkjet assembly; The purging unit includes: A cleaning roller and / or blower module I located at the front end of the green inkjet assembly; Blower module II is located at the rear end of the green inkjet assembly; Each blower module includes: at least one air duct and a fan connected to the air duct; Each air duct is provided with at least one air groove that matches its length direction, and each air groove has an inclined part on its edge that matches its air outlet direction. The front end of the blower module I is also provided with a blower module III that spatially matches the width direction of the workbench; The blower module I includes: a blower duct I that is spatially parallel to the width direction of the workbench; Air duct II is parallel to the length of the workbench in space; The blowing module III performs a large-area initial cleaning of dust on the surface of the material to be printed, while the air duct I is used to reverse and limit the dust blown out by the blowing module III.

2. The green digital printing system as described in claim 1, characterized in that, The workbench is equipped with multiple conveyor rollers; Multiple recessed windows, aligned with the layout direction of the conveyor rollers, are provided between adjacent conveyor rollers. The sunken window is provided with a suction component and / or a suction cup component below it.

3. The green digital printing system as described in claim 1, characterized in that, The feeding unit has an irregularly shaped limiting rod on the side that cooperates with the worktable; A limit plate is slidably installed along the length of the worktable, and an electric push plate for positioning and shaping the material is installed opposite the limit plate.

4. The green digital printing system as described in claim 1, characterized in that, The green inkjet assembly includes: a housing and multiple ink cartridges disposed within the housing, and an inkjet mechanism communicating with the ink cartridges; The outer casing is provided with multiple quick connectors that communicate with the interior of each ink cartridge. Each ink cartridge is equipped with an ink level sensing mechanism that communicates with the control module.

5. An application method of the green digital printing system as described in any one of claims 1-4, characterized in that, include: Step 1: Preparation stage before printing; Step two, the transportation stage of the material to be printed, includes: the sensors on the workbench detect in real time whether the material to be printed has reached the designated position and send the data to the control terminal. When the control terminal detects that the material has reached the designated position, it controls the conveyor roller to be in a non-working state and the material to be printed to be in a stationary state. The control terminal uses an electric push rod to push the material to be printed toward the position of the limit plate, so as to fix the position of the material to be printed. Step three, the pattern printing stage, includes: S30: The camera component acquires a real-time image of the surface of the material to be printed and sends it back to the control terminal. The recognition software inside the control terminal determines whether the material to be printed has been printed. At the same time, the control terminal displays the real-time image and synchronizes it with the operation center. S31. If the material to be printed is not printed, the motor of the moving component II is turned on by the control terminal. The moving component II moves laterally and reciprocates along the load-bearing beam, so that the blowing unit moves back and forth above the material to be printed. While moving, the control terminal puts the blowing module I or the cleaning roller into working state to remove the adhering substances on the surface of the material to be printed. S32. After the purging unit completes the purging operation for the predetermined time, the motor of the moving component I is turned on through the control terminal. The moving component I moves laterally and reciprocates along the load-bearing beam, so that the green inkjet component moves back and forth above the material to be printed, and the printing operation is started. The green inkjet unit controls the inkjet mechanism connected to different ink cartridges to spray green and environmentally friendly water-based ink onto the surface of the material to be printed, based on the data parameters set in the control terminal, to complete the pattern printing. S33. After the pre-approval time for the printing operation is completed, the control terminal puts the air blowing module II into working state to air dry the surface of the material to be printed.

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