Integrated spray head box module for digital ink-jet printer

Abstract

The utility model relates to the technical field of ink-jet printing, in particular to an integrated spray head box module for a digital ink-jet printer, which comprises an integrated spray head box, a self-circulation ink supply component arranged in the integrated spray head box, a plurality of printing spray heads, a spray head control board card and an electric control system, the printing nozzle and components for supplying ink to the printing nozzle and controlling the printing nozzle are integrally installed in the integrated nozzle box, modular design of a printing part of the ink-jet printer is achieved, one set of integrated nozzle box module can be detached from a printing trolley, and then the other set of integrated nozzle box module is installed on the printing trolley. The two sets of integrated spray head box modules can be used alternately, time and labor are saved, disassembly and assembly are convenient, and meanwhile convenience is provided for follow-up maintenance, installation and debugging of the printing spray head. In addition, the integrated spray head box is provided with five interfaces, so that the integrated spray head box can be quickly detached from an external circuit, a gas circuit and an ink circuit, and convenience is provided for quick detachment and replacement of the integrated spray head box module.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet printing, in particular to an integrated nozzle box module for a digital inkjet printer. Background Art

[0002] The inkjet printer prints images or texts by ejecting ink droplets on the printing medium through the printing nozzle. The printing nozzle is installed on the printing carriage. In addition to the printing nozzle, the printing carriage is also equipped with an ink supply assembly for supplying ink to the nozzle, an air circuit assembly for adjusting the negative pressure value in the ink circuit, and a circuit board for controlling the printing process. The ink supply assembly includes a secondary ink cartridge, which is usually arranged above the printing nozzle to maintain the stability of the ink supply. This arrangement structure causes the printing nozzle to need to be disassembled for maintenance. The secondary ink cartridge must be disassembled before the printing nozzle can be disassembled. The disassembly and replacement of the printing nozzle is time-consuming and laborious. In addition, the connection and communication of the ink supply assembly, the air circuit assembly and the circuit board require a lot of pipes and wires. Whether the connection of these pipes and wires is neat depends on the arrangement structure of each component. If the arrangement structure is not reasonable, it will cause the pipes or wires to cross and entangle with each other and be difficult to identify, making the disassembly and maintenance of the printing nozzle time-consuming and labor-intensive, causing the inkjet printer to delay production due to disassembly and maintenance. Utility Model Content

[0003] The utility model aims to provide an integrated nozzle box module for a digital inkjet printer to overcome the problems existing in the existing equipment.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an integrated nozzle box module for a digital inkjet printer, comprising an integrated nozzle box, a self-circulating ink supply component arranged in the integrated nozzle box, multiple printing nozzles, a nozzle control board and an electronic control system, the multiple printing nozzles are connected to the self-circulating ink supply component through pipelines, the nozzle control board is electrically connected to the multiple printing nozzles, and the electronic control system is electrically connected to the self-circulating ink supply component and the nozzle control board; the integrated nozzle box comprises a connected upper cover plate, a nozzle bottom plate and two side plates, the upper cover plate is provided with a high-voltage fast interface, a low-voltage fast interface, an ink path interface, an air path interface and a network interface, which are used to provide interfaces for external circuits, air paths and ink paths of the integrated nozzle box, the multiple printing nozzles are installed on the nozzle bottom plate, and a trolley mounting bracket is fixedly mounted on each side plate, and the trolley mounting bracket is used to install the integrated nozzle box on the printing trolley.

[0005] On the basis of the above technical solution, the utility model can also be improved as follows:

[0006] As a further improvement of the above technical solution, a reinforcement panel and a plurality of observation windows are provided on the front side of the integrated nozzle box. The reinforcement panel fixes the plurality of observation windows. The observation windows are made of acrylic material. An observation window bracket is provided between adjacent observation windows. The observation window bracket is made of aluminum alloy plate.

[0007] As a further improvement of the above technical solution, a back panel is provided on the rear side of the integrated nozzle box, the inner side of the back panel is close to the electronic control system and an opening is provided in the upper and middle part of the back panel, an electronic control cover is fixed to the outer side of the back panel by screws, the electronic control cover is made of galvanized sheet after bending, welding and plastic spraying, a part of the electronic control system extends into the electronic control cover, and the electronic control cover is provided with heat dissipation holes and fan air inlet holes.

[0008] As a further improvement of the above technical solution, a guide key is fixedly installed on each side panel, and the guide key is made of aluminum alloy plate.

[0009] As a further improvement of the above technical solution, the upper cover plate is provided with exhaust holes and a mainboard maintenance window, and the upper cover plate, nozzle base plate, reinforcement panel, back plate and side plates are made of aluminum alloy plates.

[0010] As a further improvement of the above technical solution, the self-circulating ink supply assembly includes an ink storage cartridge, an ink supply cartridge arranged side by side with the ink storage cartridge, a circulating pump and a degassing lung, the ink supply cartridge and the ink storage cartridge are arranged side by side, and mounting brackets are welded at both ends of the ink storage cartridge and the ink supply cartridge, and the mounting bracket is used to install the ink storage cartridge and the ink supply cartridge on the side panel of the integrated nozzle box.

[0011] As a further improvement of the above technical solution, the ink path interface is connected to the interior of the ink storage cartridge through a first ink tube, and the ink path interface is connected to an external ink pot through a pipeline, and the air path interface is connected to the interior of the ink storage cartridge through a negative pressure tube, and the air path interface is connected to an external negative pressure system through a pipeline.

[0012] As a further improvement of the above technical solution, a nozzle ink return pipe is connected between the ink storage cartridge and the ink outlet of the printing nozzle, a nozzle ink inlet pipe is connected between the ink supply cartridge and the ink inlet of the printing nozzle, and the ink supply cartridge is connected to an exhaust valve through the pipe; a second ink tube is connected between the ink storage cartridge and the ink supply cartridge, a circulating pump and a degassing lung are arranged on the second ink tube, a liquid level sensor is installed on the ink storage cartridge, and a pressure sensor is installed on the ink supply cartridge.

[0013] As a further improvement of the above technical solution, the nozzle control board is arranged above the multiple printing nozzles, including multiple nozzle plates corresponding to and electrically connected to the printing nozzles and multiple control main boards electrically connected to the nozzle plates.

[0014] As a further improvement of the above technical solution, the electronic control system includes a 15V power supply, a 24V power supply, a PLC controller, an Ethernet switch and an ink supply control system arranged in an integrated nozzle box, the PLC controller is electrically connected to the nozzle control board, the ink supply control system is electrically connected to the self-circulating ink supply component, the Ethernet switch is communicatively connected to the PLC controller and the ink supply control system, and the network interface is connected to the Ethernet switch.

[0015] The beneficial effect of the utility model is that the integrated nozzle box module provided by the utility model is to integrate the printing nozzle and the components for supplying ink and controlling the printing nozzle into the integrated nozzle box, and the integrated nozzle box can be quickly installed on the printing carriage, or quickly disassembled from the printing carriage for replacement, so as to realize the modular design of the printing part of the inkjet printer. When maintaining the printing nozzle, one group of integrated nozzle box modules can be disassembled from the printing carriage, and then another group of integrated nozzle box modules can be installed on the printing carriage, so that the two groups of integrated nozzle box modules can be used in rotation, and there is no need to disassemble the printing nozzle, ink cartridge and other components one by one, which saves time and effort, and is convenient for disassembly and assembly. It provides convenience for the subsequent maintenance and installation and commissioning of the printing nozzle, and the inkjet printer will not delay production due to disassembly and maintenance. In addition, five interfaces are provided on the integrated nozzle box to realize the rapid disassembly of the integrated nozzle box and the external circuit, air circuit, and ink circuit, which provides convenience for the rapid disassembly and replacement of the integrated nozzle box module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of an integrated nozzle box module for a digital inkjet printer provided by a preferred embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A front side view of the integrated nozzle box module;

[0019] Figure 3 is along Figure 2 Sectional view along line AA;

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure of the self-circulating ink supply component;

[0021] Figure 5 yes Figure 1 A rear side view of the integrated nozzle box module;

[0022] Figure 6 yes Figure 1 A top view of the integrated nozzle box module;

[0023] Figure 7yes Figure 1 A bottom view of the integrated nozzle box module;

[0024] Figure 8 yes Figure 1 Right side view of the integrated nozzle box module;

[0025] In the figure: 11, upper cover; 111, strong current fast interface; 112, weak current fast interface; 113, ink circuit interface; 114, gas circuit interface; 115, network interface; 116, exhaust hole; 117, mainboard maintenance window; 12, nozzle bottom plate; 13, back plate; 14, side plate; 141, trolley mounting bracket; 142, guide key; 15, strengthening panel; 16, electric control cover; 161, heat dissipation hole; 162, fan air inlet hole; 17, observation window; 1 71. Observation window bracket; 2. Self-circulating ink supply assembly; 21. Ink storage cartridge; 211. Nozzle ink return pipe; 212. First ink tube; 213. Negative pressure pipe; 22. Ink supply cartridge; 221. Nozzle ink inlet pipe; 222. Exhaust valve; 223. Second ink tube; 23. Circulation pump; 24. Degassing lung; 25. Mounting bracket; 26. Liquid level sensor; 27. Pressure sensor; 3. Printing nozzle; 41. Nozzle board; 42. Control main board; 5. Electronic control system. DETAILED DESCRIPTION

[0026] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] like Figures 1 to 8 As shown, a preferred embodiment of the utility model provides an integrated nozzle box module for a digital inkjet printer, including an integrated nozzle box, a self-circulating ink supply component 2 arranged in the integrated nozzle box, a plurality of printing nozzles 3, a nozzle control board and an electronic control system 5, wherein the self-circulating ink supply component 2 is a component for supplying ink to the printing nozzles 3, and the nozzle control board and the electronic control system 5 are components for controlling the printing nozzles 3.

[0030] The integrated nozzle box includes an upper cover plate 11, a nozzle bottom plate 12, a reinforcement panel 15, a back plate 13 and two side plates 14. The upper cover plate 11, the nozzle bottom plate 12, the reinforcement panel 15, the back plate 13 and the side plates 14 are all rectangular plates, which are made of aluminum alloy plates through CNC machine tools, and the upper cover plate 11, the nozzle bottom plate 12, the reinforcement panel 15, the back plate 13 and the two side plates 14 are assembled and connected by screws.

[0031] The upper cover plate 11 is arranged on the top of the integrated nozzle box. The upper cover plate 11 is provided with five interfaces for providing interfaces for the external circuit, gas circuit and ink circuit of the integrated nozzle box. The five interfaces are respectively a strong current fast interface 111, a weak current fast interface 112, an ink circuit interface 113, a gas circuit interface 114 and a network interface 115 (such as Figure 6 As shown in the figure), the strong current fast interface 111 provides a 220V power supply interface for the integrated nozzle box module, the weak current fast interface 112 provides a signal transmission interface for the integrated nozzle box module, the network interface 115 provides a communication interface for data transmission between the nozzle control board inside the integrated nozzle box and the computer, the air circuit interface 114 provides a negative pressure interface for the self-circulating ink supply component 2, and the ink circuit interface 113 provides an interface for ink supply of the ink storage box 21 of the self-circulating ink supply component 2. Preferably, the upper cover plate 11 is also provided with an exhaust hole 116 and a mainboard maintenance window 117. The exhaust hole 116 is used for exhausting air. By setting the mainboard maintenance window 117, it is convenient to repair the control mainboard 42 inside the integrated nozzle box.

[0032] The nozzle base plate 12 is arranged at the bottom of the integrated nozzle box. Figure 7As shown, the nozzle base plate 12 is equipped with the plurality of printing nozzles 3. As the number of printing nozzles 3 increases, the nozzle base plate 12 can be lengthened so that more printing nozzles 3 can be installed. As the number of printing nozzles 3 increases, only the length of the nozzle base plate 12 needs to be changed, which can meet the printing requirements of the printing width between 160 mm and 2560 mm. The nozzle base plate 12 can be a special base plate for installing a thermal foaming nozzle, and the printing nozzle 3 can be a thermal foaming nozzle produced by Suzhou Ruifa Printing Technology Co., Ltd. The thermal foaming nozzle has the advantages of high precision, high speed, and ink internal circulation is not easy to break ink and draw.

[0033] The front side of the integrated nozzle box is provided with the reinforcing panel 15 and a plurality of observation windows 17. The reinforcing panel 15 serves to strengthen the rigidity of the front side of the integrated nozzle box and is also used to fix the plurality of observation windows 17. The observation window 17 is made of acrylic material and is used to observe the nozzle control board, the self-circulating ink supply assembly 2 and other components in the integrated nozzle box, so as to facilitate disassembly and maintenance. An observation window bracket 171 is provided between adjacent observation windows 17. The observation window bracket 171 is a bearing bracket of the observation window 17 and is made of an aluminum alloy plate processed by a CNC machine tool.

[0034] The back plate 13 is arranged on the rear side of the integrated nozzle box and is the back connection plate of the integrated nozzle box. The inner side of the back plate 13 is close to the electronic control system 5, and an opening is provided in the upper and middle part of the back plate 13. An electronic control cover 16 is fixed to the outer side of the back plate 13 by screws. The electronic control cover 16 is made of galvanized sheet after bending, welding and spraying. A part of the electronic control system 5 extends into the electronic control cover 16. The electronic control cover 16 is used to protect the electronic control system 5 therein. The electronic control cover 16 is provided with heat dissipation holes 161 and fan air inlet holes 162.

[0035] The two side panels 14 are arranged on both sides of the integrated nozzle box and are the side connecting panels of the integrated nozzle box. A trolley mounting bracket 141 and a guide key 142 are fixedly mounted on each side panel 14. The trolley mounting bracket 141 and the guide key 142 are both made of aluminum alloy plates processed by CNC machine tools. The trolley mounting bracket 141 is used to install the integrated nozzle box on the printing trolley. When the integrated nozzle box is installed on the printing trolley, the trolley mounting bracket 141 is fixed to the printing trolley with bolts, and the integrated nozzle box is quickly installed on the printing trolley. The guide key 142 is used to guide and position the integrated nozzle box when it is installed on the printing trolley, so as to ensure the accuracy of the installation position of the integrated nozzle box, thereby ensuring the accuracy of inkjet printing.

[0036] like Figure 4As shown, the self-circulating ink supply assembly 2 is used to supply ink for the printing nozzle 3 to print, and includes an ink storage box 21, an ink supply box 22 arranged side by side with the ink storage box 21, a circulation pump 23 and a degassing lung 24. The ink storage box 21 and the ink supply box 22 are both made of 304 stainless steel, and mounting brackets 25 are welded at both ends of the ink storage box 21 and the ink supply box 22. The mounting bracket 25 is used to mount the ink storage box 21 and the ink supply box 22 on the side plate 14 of the integrated nozzle box.

[0037] The ink circuit interface 113 is connected to the interior of the ink storage cartridge 21 through the first ink tube 212, and the ink circuit interface 113 can be connected to an external ink pot through a pipeline, and the ink pot supplies ink to the ink storage cartridge 21 via the ink circuit interface 113 and the first ink tube 212; the air circuit interface 114 is connected to the interior of the ink storage cartridge 21 through the negative pressure tube 213, and the air circuit interface 114 is connected to an external negative pressure system through a pipeline, and the negative pressure system provides negative pressure to the ink storage cartridge 21 via the air circuit interface 114 and the negative pressure tube 213.

[0038] A nozzle ink return pipe 211 is connected between the ink storage cartridge 21 and the ink outlet of the printing nozzle 3, a nozzle ink inlet pipe 221 is connected between the ink supply cartridge 22 and the ink inlet of the printing nozzle 3, and the ink supply cartridge 22 is connected to an exhaust valve 222 through a pipe; a circulation pump 23 is used to supply ink from the ink storage cartridge 21 to the ink supply cartridge 22, and a degassing lung 24 is used to remove tiny bubbles in the ink; a second ink tube 223 is connected between the ink storage cartridge 21 and the ink supply cartridge 22, and the circulation pump 23 and the degassing lung 24 are arranged on the second ink tube 223, and the degassed ink of the degassing lung 24 enters the ink supply cartridge 22, so as to realize the circulating ink supply for the printing nozzle 3. Preferably, a liquid level sensor 26 is installed on the ink storage cartridge 21 for detecting the ink level in the ink storage cartridge 21; and a pressure sensor 27 is installed on the ink supply cartridge 22 for detecting the pressure in the ink supply cartridge 22.

[0039] The nozzle control board is arranged above the plurality of printing nozzles 3 and is electrically connected to the printing nozzles 3, and is used to control the printing nozzles 3 to perform printing actions. The nozzle control board includes a plurality of nozzle boards 41 corresponding to and electrically connected to the printing nozzles 3, and a plurality of control boards 42 corresponding to and electrically connected to the nozzle boards 41. The nozzle board 41 is the core control inkjet board of the printing nozzle 3, and is used to control the inkjet of the printing nozzle 3. Each nozzle board 41 controls one of the printing nozzles 3, and the number increases as the number of printing nozzles 3 increases. The control board 42 is the core data processing board, and each control board 42 can control four nozzle boards 41, and the number increases as the number of printing nozzles 3 and nozzle boards 41 increases. The operator transmits the computer-processed pictures and other files to the control board 42 through the network, and the control board 42 transmits this digital information to the nozzle board 41, and the nozzle board 41 parses it into the working data of the printing nozzle 3, and the printing nozzle 3 starts to print pictures and texts on the printing medium.

[0040] The electric control system 5 is connected to the self-circulating ink supply assembly 2 and the nozzle control board, and is an electrical control system of the integrated nozzle box module, providing data support and functional support for the operation of the printing nozzle 3. The electric control system 5 includes a 15V power supply, a 24V power supply, a PLC controller, an Ethernet switch and an ink supply control system arranged in the integrated nozzle box, the PLC controller is electrically connected to the nozzle control board, the ink supply control system is electrically connected to the self-circulating ink supply assembly 2, the Ethernet switch is communicatively connected to the PLC controller and the ink supply control system, and the network interface 115 is connected to the Ethernet switch.

[0041] The integrated nozzle box module provided by the utility model is to integrate the printing nozzle 3 and the components for supplying ink and controlling the printing nozzle 3 into the integrated nozzle box, and the integrated nozzle box can be quickly installed on the printing carriage, or quickly disassembled from the printing carriage for replacement, so as to realize the modular design of the printing part of the inkjet printer. When maintaining the printing nozzle 3, one group of integrated nozzle box modules can be disassembled from the printing carriage, and another group of integrated nozzle box modules can be installed on the printing carriage, so that the two groups of integrated nozzle box modules can be used in rotation, and there is no need to disassemble the printing nozzle 3, ink cartridges and other components one by one, which saves time and effort, and is convenient for disassembly and assembly. It provides convenience for the subsequent maintenance and installation and commissioning of the printing nozzle 3, and the inkjet printer will not delay production due to disassembly and maintenance. In addition, five interfaces are provided on the integrated nozzle box to realize the rapid disassembly of the integrated nozzle box and the external circuit, gas circuit, and ink circuit, which provides convenience for the rapid disassembly and replacement of the integrated nozzle box module.

[0042] Any details not mentioned in the above specific embodiments of the present invention belong to the known technologies in the art and can be implemented with reference to the known technologies.

[0043] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An integrated nozzle box module for a digital inkjet printer, characterized in that: It includes an integrated nozzle box, a self-circulating ink supply component arranged in the integrated nozzle box, multiple printing nozzles, a nozzle control board and an electronic control system. The multiple printing nozzles are connected to the self-circulating ink supply component through pipelines, the nozzle control board is electrically connected to the multiple printing nozzles, and the electronic control system is electrically connected to the self-circulating ink supply component and the nozzle control board; the integrated nozzle box includes a connected upper cover plate, a nozzle base plate and two side plates, the upper cover plate is provided with a high-voltage fast interface, a low-voltage fast interface, an ink circuit interface, an air circuit interface and a network interface, which are used to provide interfaces for external circuits, air circuits and ink circuits of the integrated nozzle box, the multiple printing nozzles are installed on the nozzle base plate, and a trolley mounting bracket is fixedly installed on each side plate, and the trolley mounting bracket is used to install the integrated nozzle box on the printing trolley.

2. The integrated nozzle box module for a digital inkjet printer according to claim 1, characterized in that: A reinforcement panel and a plurality of observation windows are arranged on the front side of the integrated nozzle box. The reinforcement panel fixes the plurality of observation windows. The observation windows are made of acrylic material. An observation window bracket is arranged between adjacent observation windows. The observation window bracket is made of aluminum alloy plate.

3. The integrated nozzle box module for a digital inkjet printer according to claim 2, characterized in that: A back panel is arranged on the rear side of the integrated nozzle box, the inner side of the back panel is close to the electronic control system and an opening is arranged in the middle and upper part of the back panel, an electronic control cover is fixed to the outer side of the back panel by screws, the electronic control cover is made of galvanized sheet after bending, welding and then plastic spraying, a part of the electronic control system extends into the electronic control cover, and the electronic control cover is provided with heat dissipation holes and fan air inlet holes.

4. The integrated nozzle box module for a digital inkjet printer according to claim 3, characterized in that: The electronic control system includes a 15V power supply, a 24V power supply, a PLC controller, an Ethernet switch and an ink supply control system arranged in an integrated nozzle box. The PLC controller is electrically connected to the nozzle control board, the ink supply control system is electrically connected to the self-circulating ink supply component, the Ethernet switch is communicatively connected to the PLC controller and the ink supply control system, and the network interface is connected to the Ethernet switch.

5. The integrated nozzle box module for a digital inkjet printer according to claim 3, characterized in that: A guide key is fixedly mounted on each side plate, and the guide key is made of an aluminum alloy plate.

6. The integrated nozzle box module for a digital inkjet printer according to claim 5, characterized in that: The upper cover plate is provided with an exhaust hole and a mainboard maintenance window, and the upper cover plate, the nozzle bottom plate, the reinforcement panel, the back plate and the side plates are made of aluminum alloy plates.

7. The integrated nozzle box module for a digital inkjet printer according to claim 1, characterized in that: The self-circulating ink supply assembly includes an ink storage cartridge, an ink supply cartridge arranged side by side with the ink storage cartridge, a circulating pump and a degassing lung. The ink supply cartridge and the ink storage cartridge are arranged side by side. Mounting frames are welded at both ends of the ink storage cartridge and the ink supply cartridge. The mounting frames are used to mount the ink storage cartridge and the ink supply cartridge on the side panel of the integrated nozzle box.

8. The integrated nozzle box module for a digital inkjet printer according to claim 7, characterized in that: The ink circuit interface is connected to the inside of the ink storage cartridge through a first ink tube, and is connected to an external ink pot through a pipeline. The air circuit interface is connected to the inside of the ink storage cartridge through a negative pressure tube, and is connected to an external negative pressure system through a pipeline.

9. The integrated nozzle box module for a digital inkjet printer according to claim 8, characterized in that: A nozzle ink return pipeline is connected between the ink storage cartridge and the ink outlet of the printing nozzle, a nozzle ink inlet pipeline is connected between the ink supply cartridge and the ink inlet of the printing nozzle, and the ink supply cartridge is connected to an exhaust valve through the pipeline; a second ink tube is connected between the ink storage cartridge and the ink supply cartridge, a circulating pump and a degassing lung are arranged on the second ink tube, a liquid level sensor is installed on the ink storage cartridge, and a pressure sensor is installed on the ink supply cartridge.

10. The integrated nozzle box module for a digital inkjet printer according to claim 1, characterized in that: The nozzle control board is arranged above the plurality of printing nozzles, and comprises a plurality of nozzle plates corresponding to and electrically connected to the printing nozzles one by one and a plurality of control main boards electrically connected to the nozzle plates.

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