Modular intelligent printing robot

Abstract

The modular intelligent printing robot comprises a printing robot body and a plugging part, the plugging part comprises a plurality of sealing parts, the sealing parts slide in an ink jet port to plug the ink jet port and occupy the space of the bottom of the ink jet port, and the outlet direction of a spiral hole faces the inner wall of the ink jet port; when the printing robot body heats the ink in the printing robot body, the ink is sprayed out through the spiral hole, and the ink in the ink-jet nozzle rolls up sediment in a spiral shape and circularly flows with the ink in the printing robot body. And when the sealing part leaves the ink-jet port, a space is reserved for ink, so that the ink is prevented from dripping due to pressure. By means of the special design of the spiral holes, when ink is sprayed out, rotating force is formed, the ink in the ink-jet opening is driven to be in a spiral shape to form vortex, sediment is rolled up and circularly flows with the ink in the printing robot body, adhesion of ink particles is effectively avoided, the conditions that the ink-jet amount is reduced and printing spots exist in printing are prevented, and the printing quality is improved.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology, and in particular to a modular intelligent printing robot. Background Technology

[0002] Inkjet printing, as an advanced printing technology, possesses the significant characteristics of being contactless, pressureless, and plate-free. Relying on the powerful information storage and processing capabilities of computers, it allows for rapid initiation of the printing process simply by accurately inputting the image and text information stored in the computer into the inkjet printer. Compared to traditional printing methods, inkjet printing eliminates the need for cumbersome plate-making processes and complex color registration, yet produces higher-quality printed products. Furthermore, this technology is easy to operate, the equipment is stable and reliable, and the printing accuracy is extremely high, demonstrating unique advantages and broad application prospects in numerous printing fields.

[0003] Currently, most inkjet printers on the market employ a specific inkjet mechanism. Their inkjet nozzles are designed with a conical structure. This ingenious design creates a negative pressure environment inside the ink cartridge, effectively preventing ink from dripping freely when not in use, ensuring a clean and orderly printing process. Simultaneously, the ink cartridge is equipped with a heating resistor. When energized, the resistor generates a high temperature instantly, causing the surrounding ink to rapidly expand and propel it through the inkjet nozzle, achieving precise inkjet printing.

[0004] However, existing inkjet automatic printing equipment still faces some pressing problems in practical applications. Especially when the equipment is idle for extended periods, the ink at the nozzles dries very easily. The dried ink particles gradually adhere to the inner wall of the printhead, accumulating over time. This not only hinders ink ejection from the nozzles, affecting the smoothness and continuity of printing, but also significantly reduces the ink volume, resulting in inconsistent color depth, blurred patterns, and ultimately, defects such as speckles on the printed product. This severely impacts print quality, reduces product yield, and causes economic losses for related companies.

[0005] To address this issue, this application proposes a modular intelligent printing robot to solve the problem of poor ink ejection from the nozzles in existing inkjet automatic printing equipment after prolonged periods of disuse. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned technical problems by proposing a modular intelligent printing robot.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A modular intelligent printing robot includes a printing robot body, a paper feeding port at the top of the printing robot body, a paper output port at the front, a mounting block movably disposed within the printing robot body, an inkjet cartridge fixed on the mounting block, an inkjet nozzle at the bottom of the inkjet cartridge, and further includes;

[0009] The sealing section includes multiple sealing parts that slide within the inkjet nozzle to seal it and occupy the space at the bottom of the nozzle. A spiral hole is provided through each sealing part, with the outlet of the spiral hole facing the inner wall of the inkjet nozzle. When the printing robot body heats the ink inside, the ink is ejected through the spiral hole and flows into the inkjet nozzle, causing the ink to spiral and roll up any sediment, circulating with the ink within the printing robot body. When the sealing part leaves the inkjet nozzle, space is left for the ink, preventing it from dripping due to pressure.

[0010] Preferably, it also includes a drive unit, which includes two electric push rods installed in the body of the printing robot. The output end of the electric push rod is fixed with a hollow plate, and the sealing part is installed on the hollow plate. When the inkjet cartridge is in the initial position, the sealing part is positioned opposite to the inkjet nozzle.

[0011] Preferably, it also includes an ink storage mechanism, which includes an ink tank. The ink tank delivers ink to the spiral hole via a conveying device. A flexible tube is connected to the ink cartridge and is connected to the ink tank.

[0012] Preferably, the conveying device includes a rotatable circular plate, on which a connecting rod is eccentrically hinged. A piston cylinder is installed inside the printing robot body, and a movable piston that is slidably connected to the connecting rod is hinged inside the piston cylinder. The piston cylinder is connected to the ink storage tank through an inlet pipe, and a first electromagnetic check valve is provided on the inlet pipe.

[0013] Preferably, the piston cylinder is equipped with a liquid outlet pipe, and the liquid outlet pipe is equipped with a liquid outlet check valve. The liquid outlet pipe is installed through the hollow plate and is connected to the spiral hole through a connecting pipe.

[0014] Preferably, the mixing mechanism for mixing ink in an ink reservoir has an upper cover installed on the ink reservoir, a rotating stirring shaft passing through the upper cover, and multiple stirring rods fixed on the stirring shaft to stir the ink to make it uniform.

[0015] Preferably, the device further includes a drive device, which includes a mounting plate mounted on the top cover, a motor mounted on the mounting plate, a power shaft fixed to the output end of the motor, a first bevel gear fixed on the power shaft, a second bevel gear fixed on the stirring shaft, the first bevel gear meshing with the second bevel gear, and the circular plate coaxially fixed on the power shaft.

[0016] Preferably, it also includes a cleaning mechanism for cleaning ink inside the spiral port, the cleaning mechanism including an air inlet pipe mounted on the piston cylinder, and a second electromagnetic check valve installed on the air inlet pipe.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows:

[0018] 1. Prevent ink drying and clogging at the nozzle: By setting a sealing part, when the ink cartridge is in the initial position, the sealing part is inserted into the ink nozzle. The rubber conical sealing part effectively seals the ink nozzle with good elasticity and sealing performance, preventing ink from drying when not in use for a long time, reducing ink particles adhering to the inner wall of the printhead, and preventing poor ink ejection at the nozzle.

[0019] 2. Avoid reduced ink volume and printing spots: The special design of the spiral hole creates a rotational force when the ink is ejected, driving the ink in the ink nozzle to form a spiral vortex. This vortex rolls up the sediment and circulates with the ink in the printing robot body, effectively preventing ink particles from adhering, preventing reduced ink volume and printing spots, and improving printing quality.

[0020] 3. Cleaning residual ink in the spiral hole: After the ink is heated to a uniform temperature, the first electromagnetic check valve closes and the second electromagnetic check valve opens. When the moving piston moves up and down, air enters the piston cylinder through the air inlet pipe and is delivered to the spiral hole to be sprayed out, cleaning the residual ink in the spiral hole and preventing ink accumulation and blockage.

[0021] 4. Prevent ink dripping: The electric push rod drives the hollow plate and the sealing part to move slowly downwards. When the sealing part leaves the ink nozzle, because the sealing part occupies the bottom space of the ink nozzle, the ink in the ink nozzle moves downwards due to gravity but will not leave the ink nozzle, thus preventing ink dripping and ensuring a clean and tidy printing process.

[0022] In summary, the special design of the spiral hole in this invention creates a rotational force when the ink is ejected, driving the ink in the inkjet nozzle to form a spiral vortex. This vortex rolls up the sediment and circulates with the ink in the printing robot body, effectively preventing ink particles from adhering, preventing a decrease in ink volume and the presence of smudges in the printing, and improving printing quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a modular intelligent printing robot proposed in this invention;

[0024] Figure 2 This is an internal schematic diagram of a modular intelligent printing robot proposed in this invention;

[0025] Figure 3 This is a schematic diagram of the circular plate in a modular intelligent printing robot proposed in this invention;

[0026] Figure 4 This is a schematic diagram of the inkjet nozzle structure in a modular intelligent printing robot proposed in this invention;

[0027] Figure 5 This is a schematic diagram of the hollow board structure in a modular intelligent printing robot proposed in this invention;

[0028] Figure 6 This is a schematic diagram of the sealing part in a modular intelligent printing robot proposed in this invention;

[0029] Figure 7 This is a schematic diagram of the stirring rod in a modular intelligent printing robot proposed in this invention;

[0030] Figure 8 This is a schematic diagram of the air intake pipe in a modular intelligent printing robot proposed in this invention.

[0031] In the diagram: 1. Printing robot body, 2. Paper feed port, 3. Paper output port, 4. Printing platform, 5. Moving parts, 6. Mounting block, 7. Inkjet cartridge, 8. Hose, 9. Circular plate, 10. Piston cylinder, 11. Connecting rod, 12. Moving piston, 13. Mounting plate, 14. Motor, 15. First bevel gear, 16. Power shaft, 17. Electric push rod, 18. Liquid outlet pipe, 19. Liquid inlet pipe, 20. Liquid outlet check valve, 21. First electromagnetic check valve, 22. Second bevel gear, 23. Inkjet nozzle, 24. Hollow plate, 25. Sealing part, 26. Spiral hole, 27. Ink reservoir, 28. Top cover, 29. Stirring shaft, 30. Stirring rod, 31. Air inlet pipe, 32. Second electromagnetic check valve. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Reference Figures 1-8 A modular intelligent printing robot includes a printing robot body 1, which serves as the supporting frame for the entire device, providing a mounting base for all components. The printing robot body 1 has a paper inlet 2 at its upper end for placing the paper to be printed into the device; and a paper outlet 3 at its front for outputting the printed paper. Inside the printing robot body 1 is a printing platform 4 with a smooth, flat surface for stably placing the paper, ensuring that the paper does not move during printing and guaranteeing print quality.

[0034] The printing robot body 1 is equipped with a movable component 5, which includes an X-axis drive mechanism and a Y-axis drive mechanism. The Y-axis drive mechanism is movably mounted on the movable end of the X-axis drive mechanism. A mounting block 6 is mounted on the movable end of the Y-axis drive mechanism, and the inkjet cartridge 7 is fixed on the mounting block 6.

[0035] Both the X-axis and Y-axis drive mechanisms employ high-precision stepper motors paired with lead screw drives. Stepper motors offer precise positioning and easy control, while lead screw drives convert the motor's rotary motion into linear motion, providing smooth transmission and high precision. By controlling the X-axis and Y-axis stepper motors separately through the control system, the positions of the mounting block 6 and the inkjet cartridge 7 in the horizontal plane can be precisely adjusted to meet the needs of different paper sizes and printing positions. For example, when printing large-format posters, the inkjet cartridge 7 can be moved to the appropriate position using the movable part 5 to achieve full-coverage printing.

[0036] The sealing section includes multiple sealing parts 25, each of which is a conical shape made of rubber. This material has good elasticity and sealing properties, and the conical shape facilitates the insertion of the sealing part 25 into the inkjet nozzle 23 while ensuring a good seal for the inkjet nozzle 23. The sealing part 25 is slidably disposed within the inkjet nozzle 23, occupying space at the bottom of the inkjet nozzle 23.

[0037] A spiral hole 26 is provided through the sealing part 25, with the outlet direction of the spiral hole 26 facing the inner wall of the inkjet nozzle 23. When the printing robot body 1 heats the ink inside, the ink is ejected through the spiral hole 26. Due to the special design of the spiral hole 26, the ink generates a certain rotational force when ejected, which drives the ink in the inkjet nozzle 23 to form a spiral shape, creating a vortex. This vortex can roll up the sediment and circulate it with the ink in the printing robot body 1, effectively preventing ink particles from adhering to the inner wall of the printhead, preventing poor ink ejection at the nozzle, reduced ink volume, and the presence of speckles in the print. After the sealing part 25 leaves the inkjet nozzle 23, sufficient ejection space is left for the ink, preventing ink from dripping due to pressure and ensuring a clean and neat printing process.

[0038] The drive unit includes two electric push rods 17 installed inside the printing robot body 1. The electric push rods 17 are high-precision linear electric push rods, characterized by stable thrust and precise stroke control. A hollow plate 24 is fixed to the output end of the electric push rod 17, and a sealing part 25 is installed on the hollow plate 24.

[0039] When the inkjet cartridge 7 is in its initial position, the sealing part 25 is positioned opposite the inkjet nozzle 23. The control system extends the electric push rod 17, driving the hollow plate 24 and the sealing part 25 upwards, causing the sealing part 25 to insert into the inkjet nozzle 23, thus sealing the nozzle. When printing is required, the control system retracts the electric push rod 17, disengaging the sealing part 25 from the inkjet nozzle 23, preparing for ink ejection.

[0040] The ink storage mechanism includes an ink reservoir 27, which is installed inside the printing robot body 1 and is made of high-strength, corrosion-resistant materials to ensure safe ink storage. The ink reservoir 27 delivers the ink inside to the spiral hole 26 via a conveying device.

[0041] A flexible tube 8 is connected to the inkjet cartridge 7. The flexible tube 8 is made of a material with good flexibility and chemical corrosion resistance, such as polytetrafluoroethylene (PTFE) tubing. The flexible tube 8 is connected to the ink reservoir 27, which facilitates the normal movement of the inkjet cartridge 7 under the action of the moving part 5, and also allows the ink in the inkjet cartridge 7 to flow to the ink reservoir 27, realizing ink circulation.

[0042] The circular plate 9 of the conveying device is rotatable, and a connecting rod 11 is eccentrically hinged to the circular plate 9. A piston cylinder 10 is installed inside the printing robot body 1, and a movable piston 12, which is hinged to the connecting rod 11, is slidably connected inside the piston cylinder 10.

[0043] The piston cylinder 10 is connected to the ink reservoir 27 via an inlet pipe 19, which is equipped with a first electromagnetic check valve 21. The first electromagnetic check valve 21 includes a one-way control valve and a solenoid valve, allowing ink to enter the piston cylinder 10 only through the inlet pipe 19 to prevent backflow. An outlet pipe 18 is installed on the piston cylinder 10, and an outlet check valve 20 is installed on the outlet pipe 18, allowing ink to flow only through the piston cylinder 10 into the outlet pipe 18. The outlet pipe 18 passes through the hollow plate 24 and is connected to the spiral hole 26 via a connecting pipe.

[0044] Working principle:

[0045] During use, the operator puts the paper to be printed into the paper inlet 2. The paper inlet 2 is equipped with a paper conveying structure that can transport the paper to the printing platform 4. After printing is completed, the paper is output from the paper outlet 3.

[0046] Because the printing robot body 1 is equipped with movable parts 5, the positions of the mounting block 6 and the inkjet cartridge 7 can be precisely adjusted through the coordinated work of the X-axis drive mechanism and the Y-axis drive mechanism to meet the needs of different printing positions.

[0047] To ensure uniform ink distribution, when motor 14 is operating, the first bevel gear 15 on the drive shaft 16 rotates, driving the second bevel gear 22 on the meshing stirring shaft 29 to rotate. This, in turn, causes the stirring shaft 29 to drive the stirring rod 30 to stir the ink in the ink reservoir 27, ensuring uniform mixing. Furthermore, a heating wire is installed inside the ink reservoir 27 to heat the ink, maintaining its fluidity for subsequent printing operations.

[0048] The ink reservoir 27 in the ink storage mechanism is installed inside the printing robot body 1, and the ink inside is transported to the inkjet nozzle 23 of the inkjet cartridge 7 by a conveying device. When the conveying device is working, the motor 14 drives the power shaft 16 to rotate, and the circular plate 9, which is coaxially fixed on the power shaft 16, rotates accordingly. A connecting rod 11 is eccentrically hinged to the circular plate 9, and the connecting rod 11 is hinged to a movable piston 12 that slides inside the piston cylinder 10. The rotation of the circular plate 9 drives the connecting rod 11 to move, which in turn causes the movable piston 12 to slide back and forth inside the piston cylinder 10. When the movable piston 12 slides away from the inlet pipe 19, a negative pressure is formed inside the piston cylinder 10, the first electromagnetic check valve 21 opens, and the ink enters the piston cylinder 10 through the inlet pipe 19; when the movable piston 12 slides closer to the outlet pipe 18, the pressure inside the piston cylinder 10 increases, the outlet check valve 20 opens, and the ink flows through the outlet pipe 18 to the connecting pipe, and is finally delivered to the spiral hole 26.

[0049] As the ink in the ink reservoir 27 is conveyed to the spiral hole 26 and ejected through the conveying device, and since the outlet direction of the spiral hole 26 faces the inner wall of the inkjet nozzle 23, the ink ejected drives the ink in the inkjet nozzle 23 to form a spiral shape, creating a vortex. This vortex can roll up the sediment and circulate it with the ink in the printing robot body 1, preventing ink particles from adhering to the inner wall of the printhead, and preventing poor ink ejection at the nozzle, reduced ink volume, and the presence of speckles in the printing.

[0050] It should be noted that both the inkjet nozzle 23 and the sealing part 25 are conical with corresponding conical ends. Therefore, when the sealing part 25 blocks the inkjet nozzle 23, the sealing part 25 will not abut against the inner wall of the inkjet nozzle 23, and the two form an angle, that is, a dead angle. When the ink is ejected through the inkjet nozzle 23, it will not impact this part (the part below the upper end of the sealing part 25 and above the bottom of the inkjet nozzle 23). The vortex formed above can drive the ink flow and can clean this dead angle.

[0051] Since the inkjet cartridge 7 is connected to the ink reservoir 27 via the hose 8, it ensures the normal movement of the inkjet cartridge 7 while also allowing excess ink in the inkjet cartridge 7 to flow back to the ink reservoir 27, thus achieving a circulation between the inkjet cartridge 7 and the heated ink.

[0052] Once the ink is heated to a uniform temperature, the first electromagnetic check valve 21 closes and the second electromagnetic check valve 32 opens. When the moving piston 12 moves up and down again, air enters the piston cylinder 10 through the air inlet pipe 33 and is delivered to the spiral hole 26 for ejection. This cleans the ink residue inside the spiral hole 26.

[0053] Next, the electric push rod 17 drives the hollow plate 24 and the sealing part 25 to move slowly downward. Since the sealing part 25 extends into the inkjet nozzle 23 and occupies a certain space, when the sealing part 25 leaves the inkjet nozzle 23, the ink in the inkjet nozzle 23 will move downward due to gravity but will not leave the inkjet nozzle 23, thereby avoiding ink dripping and waste.

[0054] As mentioned above, this effectively avoids the accumulation and clogging of inkjet nozzle 23.

[0055] When the inkjet cartridge 7 is in the initial position, the sealing part 25 is positioned opposite to the inkjet nozzle 23. The electric push rod 17 drives the hollow plate 24 and the sealing part 25 to move upward. The sealing part 25 is inserted into the inkjet nozzle 23, occupying the space at the bottom of the inkjet nozzle 23, thereby sealing the inkjet nozzle 23.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A modular intelligent printing robot, comprising a printing robot body (1), wherein the printing robot body (1) has a paper feeding port (2) at its upper end and a paper output port (3) at its front side, a mounting block (6) is movably disposed inside the printing robot body (1), an inkjet cartridge (7) is fixed on the mounting block (6), and an inkjet nozzle (23) is provided at the bottom of the inkjet cartridge (7), characterized in that, Also includes; The sealing part includes multiple sealing parts (25). The sealing parts (25) slide inside the inkjet nozzle (23) to seal it and occupy the space at the bottom of the inkjet nozzle (23). A spiral hole (26) is provided through the sealing part (25). The outlet direction of the spiral hole (26) faces the inner wall of the inkjet nozzle (23). When the printing robot body (1) heats the ink inside, the ink is sprayed out through the spiral hole (26) and enters the inkjet nozzle (23), and the ink is spiraled to roll up the sediment and circulate with the ink in the printing robot body (1). When the sealing part (25) leaves the inkjet nozzle (23), space is left for the ink to avoid the ink dripping due to pressure.

2. The modular intelligent printing robot according to claim 1, characterized in that, It also includes a drive unit, which includes two electric push rods (17) installed inside the printing robot body (1). The output end of the electric push rod (17) is fixed with a hollow plate (24). The sealing part (25) is installed on the hollow plate (24). When the inkjet cartridge (7) is in the initial position, the sealing part (25) is positioned opposite to the inkjet nozzle (23).

3. The modular intelligent printing robot according to claim 1, characterized in that, It also includes an ink storage mechanism, which includes an ink tank (27). The ink tank (27) delivers the ink inside to the spiral hole (26) through a conveying device. A hose (8) is connected to the ink cartridge (7), and the hose (8) is connected to the ink tank (27).

4. A modular intelligent printing robot according to claim 3, characterized in that, The conveying device includes a rotatable circular plate (9), on which a connecting rod (11) is eccentrically hinged. A piston cylinder (10) is installed inside the printing robot body (1). A movable piston (12) is slidably connected inside the piston cylinder (10) and hinged to the connecting rod (11). The piston cylinder (10) is connected to the ink reservoir (27) through an inlet pipe (19), and a first electromagnetic check valve (21) is provided on the inlet pipe (19).

5. A modular intelligent printing robot according to claim 4, characterized in that, The piston cylinder (10) is equipped with a liquid outlet pipe (18), and a liquid outlet check valve (20) is installed on the liquid outlet pipe (18). The liquid outlet pipe (18) passes through the hollow plate (24) and is connected to the spiral hole (26) through a connecting pipe.

6. A modular intelligent printing robot according to claim 3, characterized in that, A mixing mechanism for mixing ink in an ink reservoir (27) is provided. An upper cover (28) is installed on the ink reservoir (27). A rotating stirring shaft (29) is provided through the upper cover (28). Multiple stirring rods (30) are fixed on the stirring shaft (29) to stir the ink and make it uniform.

7. A modular intelligent printing robot according to claim 6, characterized in that, It also includes a drive device, which includes a mounting plate (13) mounted on the top cover (28), a motor (14) mounted on the mounting plate (13), a power shaft (16) fixed to the output end of the motor (14), a first bevel gear (15) fixed on the power shaft (16), a second bevel gear (22) fixed on the stirring shaft (29), the first bevel gear (15) meshing with the second bevel gear (22), and the circular plate (9) coaxially fixed on the power shaft (16).

8. A modular intelligent printing robot according to claim 1, characterized in that, It also includes a cleaning mechanism for cleaning ink inside the spiral hole (26), the cleaning mechanism including an air inlet pipe (31) mounted on the piston cylinder (10), and a second electromagnetic check valve (32) mounted on the air inlet pipe (31).

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