Printing machine ink jet system and ink jet printing machine

Abstract

The invention provides a printing machine ink jet system and an ink jet printing machine, and relates to the technical field of printing equipment, and the printing machine ink jet system is applied to the ink jet printing machine and comprises a nozzle assembly, a positive pressure ink injection assembly and a negative pressure ink suction assembly; the nozzle assembly is provided with an ink cavity and a nozzle, the ink cavity is used for storing ink, and the nozzle is communicated with the ink cavity and used for spraying out the ink; the positive pressure ink injection assembly is communicated with one end of the ink cavity, and the negative pressure ink suction assembly is communicated with the other end of the ink cavity. The negative pressure ink suction assembly sucks residual ink out of the ink cavity after the spray head assembly performs ink jetting, recycling is achieved, waste is prevented, meanwhile, the phenomenon that the spray head assembly is blocked after the residual ink is dried up can be avoided, in addition, in the ink jetting production process of the ink jetting assembly, the production efficiency is improved, and the production cost is reduced. A small amount of ink in the ink cavity can be sucked out through the negative pressure ink suction assembly to control the pressure in the ink cavity, and pressure stabilization control over the ink cavity is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of inkjet printing equipment, and in particular to an inkjet system of a printing machine and an inkjet printing machine. Background Art

[0002] Inkjet printing machine is a device that uses inkjet printing technology to print on textiles or other materials. It is widely used in clothing, household goods, advertising materials and other fields, with the advantages of high efficiency, flexibility and environmental protection.

[0003] Inkjet printers use a nozzle to spray ink onto a substrate in the form of tiny droplets. The nozzle is usually composed of multiple nozzles, each of which can accurately control the amount and position of ink spray. The substrate (such as cloth, paper, etc.) is moved inside the machine by a conveyor belt or roller system to ensure that the ink is evenly distributed in the desired position.

[0004] After inkjet printing, the substrate usually needs to be dried and cured to ensure that the ink is firmly attached to the substrate. This can be achieved by hot air drying, infrared heating or ultraviolet curing. In the prior art, the nozzle is connected to the ink cartridge, and the ink cartridge is used to fill the nozzle with ink and pressurize it so that the pigment and ink can be sprayed from the nozzle to the substrate. However, it is easy for residual pigment and ink to remain in the nozzle, which is relatively wasteful and easy to clog the nozzle after being left alone. Summary of the invention

[0005] The object of the present invention is to provide an inkjet system for a printing machine, so as to alleviate the technical problems in the prior art that residual pigment and ink are easily left in the nozzle, which is relatively wasteful and the nozzle is easily blocked after being left alone.

[0006] The present invention provides an inkjet system for a printing machine, which is applied to an inkjet printing machine and comprises: a nozzle assembly, a positive pressure ink injection assembly, and a negative pressure ink suction assembly; the nozzle assembly comprises an ink cavity and a nozzle, the ink cavity is used to store ink, and the nozzle is connected with the ink cavity and is used to eject ink; the positive pressure ink injection assembly is connected with one end of the ink cavity, and is used to generate pressure to inject ink into the ink cavity; the negative pressure ink suction assembly is connected with the other end of the ink cavity, and is used to generate negative pressure to suck the ink in the ink cavity.

[0007] Furthermore, the nozzle assembly includes multiple nozzles; the multiple nozzles are arranged in the same direction to form a nozzle group, and the multiple nozzle groups are arranged in parallel to form an inkjet area; the inkjet area is connected to the positive pressure ink injection assembly and the negative pressure ink absorption assembly in a one-to-one correspondence.

[0008] Furthermore, the positive-pressure ink filling assembly includes an ink filling box, and the negative-pressure ink suction assembly includes an ink return box; the ink filling box and the ink return box are used to store ink.

[0009] Furthermore, the ink supply system of the inkjet printing machine also includes a shunt pipe and a control valve; the liquid inlet end of the shunt pipe is a single-tube structure, and the liquid outlet end of the shunt pipe is a multi-tube structure; the control valve is connected to the liquid inlet end of the shunt pipe to form a liquid supply pipe; there are multiple liquid supply pipes, and the ink filling box and the inkjet area, and the ink return box and the inkjet area are connected through the liquid supply pipe, and the pipe mouth of the multi-tube structure is connected one-to-one with the multiple parallelly arranged nozzles.

[0010] Furthermore, the number of the nozzle groups and the number of the tube bodies of the multi-tube structure are both two; the two tube bodies are connected to the nozzles arranged in parallel in the two nozzle groups in a one-to-one correspondence.

[0011] Furthermore, the inkjet area, the positive pressure ink injection assembly and the negative pressure ink absorption assembly are connected one by one to form an inkjet mechanism; multiple inkjet areas, multiple positive pressure ink injection assemblies, multiple negative pressure ink absorption assemblies and multiple ink storage assemblies are connected one by one to form multiple inkjet mechanisms.

[0012] Furthermore, the plurality of ink refill boxes respectively store inks of different colors.

[0013] Furthermore, the control valve is a solenoid valve.

[0014] The present invention also aims to provide an inkjet printing machine, including the provided inkjet system.

[0015] Beneficial effects:

[0016] The printing machine inkjet system provided by the present invention is applied to the inkjet printing machine, and comprises: a nozzle assembly, a positive pressure ink injection assembly, and a negative pressure ink suction assembly; the nozzle assembly has an ink cavity and a nozzle, the ink cavity is used to store ink, and the nozzle is connected with the ink cavity and is used to eject ink; the positive pressure ink injection assembly is connected with one end of the ink cavity, and the positive pressure ink injection assembly is used to generate pressure to inject ink into the ink cavity; the negative pressure ink suction assembly is connected with the other end of the ink cavity, and the negative pressure ink suction assembly is used to generate negative pressure to suck the ink in the ink cavity.

[0017] Specifically, the two ends of the ink chamber of the nozzle assembly in the present invention are respectively connected to the positive pressure ink injection assembly and the negative pressure ink suction assembly. The negative pressure ink suction assembly sucks the residual ink out of the ink chamber after the nozzle assembly sprays ink, thereby realizing recycling and reuse. While preventing waste, it can also avoid the nozzle assembly from being blocked by the residual ink after drying. In addition, during the inkjet production process of the inkjet assembly, a small amount of ink in the ink chamber can be sucked out by the negative pressure ink suction assembly to control the pressure in the ink chamber, thereby realizing pressure stabilization control of the ink chamber.

[0018] The inkjet printing machine provided by the present invention includes the inkjet system of the printing machine provided above. Compared with the prior art, the inkjet printing system has the above advantages, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of the inkjet system of a printing machine provided in an embodiment of the present invention Figure 1 ;

[0021] Figure 2 A schematic diagram of the structure of the inkjet system of a printing machine provided in an embodiment of the present invention Figure 2 ;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0023] icon:

[0024] 100 - nozzle assembly; 200 - positive pressure ink filling assembly; 210 - ink filling cartridge; 300 - negative pressure ink suction assembly; 310 - ink return cartridge; 400 - shunt pipe; 500 - control valve; 600 - ink circulation assembly; 610 - liquid guide tube; 620 - liquid suction pump. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0032] See also Figures 1 to 3 The printing machine inkjet system provided in this embodiment is applied to an inkjet printing machine, and specifically includes a nozzle assembly 100, a positive pressure ink injection assembly 200, and a negative pressure ink absorption assembly 300.

[0033] The nozzle assembly 100 has an ink chamber and a nozzle, wherein the ink chamber is used to store ink, and the nozzle is connected to the ink chamber and used to eject ink. The positive pressure ink injection assembly 200 is connected to one end of the ink chamber, and is used to generate pressure to inject ink into the ink chamber. The negative pressure ink suction assembly 300 is connected to the other end of the ink chamber, and is used to generate negative pressure to suck the ink in the ink chamber.

[0034] Specifically, the two ends of the ink cavity of the nozzle assembly 100 in this embodiment are respectively connected to the positive pressure ink injection assembly 200 and the negative pressure ink absorption assembly 300. The negative pressure ink absorption assembly 300 sucks the residual ink out of the ink cavity after the nozzle assembly 100 sprays ink, thereby realizing recycling and reuse, preventing waste and avoiding clogging of the nozzle assembly 100 after the residual ink dries up.

[0035] In addition, during the inkjet production process of the inkjet assembly, negative pressure can be generated by the negative pressure ink absorption assembly 300 to control and balance the pressure in the ink chamber, thereby achieving stable pressure control of the ink chamber.

[0036] In this embodiment, the nozzle assembly 100 includes a plurality of nozzles. The plurality of nozzles are arranged in the same direction to form a nozzle group, and the plurality of nozzle groups are arranged in parallel to form an inkjet area. The inkjet area is connected to the positive pressure ink injection assembly 200 and the negative pressure ink absorption assembly 300 in a one-to-one correspondence.

[0037] In this embodiment, the ink sprayed by all the nozzles in each inkjet area is the same color. The colors sprayed by the multiple nozzle groups arranged in parallel are the same, and the arrangement direction of the multiple nozzle groups arranged in parallel is the same as the moving direction of the inkjet printing device. Therefore, multiple nozzles arranged in parallel can achieve multiple spraying of the same position, thereby enhancing the printing effect and avoiding poor printing effect in the corresponding area when a nozzle is damaged during the spraying process.

[0038] Moreover, in this embodiment, the inkjet area is connected to the positive pressure ink filling assembly 200 and the negative pressure ink suction assembly 300 in a one-to-one correspondence, which can realize the ink filling control of the ink chambers of all nozzles in the inkjet area, thereby realizing the synchronous control of multiple nozzles.

[0039] In this embodiment, the positive pressure ink filling assembly 200 includes an ink filling box 210, and the negative pressure ink suction assembly 300 includes an ink return box 310. The ink filling box 210 and the ink return box 310 are both used to store ink.

[0040] For details, please refer again to Figure 1 In this embodiment, the ink filling box 210 and the ink return box 310 are both rectangular and used to store ink for inkjet printing. The ink filling box 210 and the ink return box 310 are arranged in the same direction and are arranged side by side.

[0041] Multiple nozzles are arranged at intervals along the length direction of the ink filling cartridge 210 and the ink return cartridge 310, and the two ends of the ink chamber of each nozzle are respectively connected to the ink filling cartridge 210 and the ink return cartridge 310. All nozzles in an inkjet area are connected to the same ink filling cartridge 210 and the ink return cartridge 310, so that the color sprayed by all nozzles in an inkjet area is the same color.

[0042] Under this structure, the ink filling and ink absorption control of all the nozzles in the same inkjet area can be achieved through the ink filling box 210 and the ink return box 310.

[0043] Combination Figure 3 In this embodiment, the ink supply system of the inkjet printer further includes a shunt pipe 400 and a control valve 500. The liquid inlet end of the shunt pipe 400 is a single-tube structure, and the liquid outlet end of the shunt pipe 400 is a multi-tube structure. The control valve 500 is connected to the liquid inlet end of the shunt pipe 400 to form a liquid supply pipe. There are multiple liquid supply pipes, and the ink injection box 210 and the inkjet area, and the ink return box 310 and the inkjet area are connected through the liquid supply pipe, and the nozzles of the multi-tube structure are connected to multiple parallel nozzles one by one.

[0044] It should be noted that, in this embodiment, the connection structure between the ink filling cartridge 210 and the nozzle is the same as the connection structure between the ink return cartridge 310 and the nozzle, and both are connected via the shunt pipe 400 and the control valve 500 .

[0045] Specifically, in this embodiment, one end of the shunt tube 400 is connected to the ink cartridge of the ink storage assembly, and the control valve 500 is arranged at the connection between the shunt tube 400 and the ink cartridge, so as to realize the control of ink injection or ink absorption. The multi-tube structure at the other end of the shunt tube 400 is respectively connected to the ink chambers of multiple nozzles arranged in parallel, so as to realize the simultaneous ink injection or ink absorption action of multiple nozzles through a single shunt tube 400.

[0046] Furthermore, in this embodiment, the number of tube openings of the multi-tube structure of the liquid supply tube is the same as the number of nozzle groups in one inkjet area, and the number of liquid supply tubes connected to each ink injection box 210 and ink return box 310 is the same as the number of nozzles in one nozzle group. Under this structure, multiple liquid supply tubes are arranged at intervals along the length direction of the ink injection box 210 and the ink return box 310 and are all connected to the ink cartridge, so that the ink injection box 210 and the ink return box 310 can be connected to the corresponding ones of all nozzles in the inkjet area.

[0047] In addition, in this embodiment, the positive pressure ink filling assembly 200 also includes an injection pump, which is arranged on the ink filling cartridge 210 and is connected to the ink filling cartridge 210. The injection pump can generate pressure to inject the ink in the ink filling cartridge 210 into the ink chambers of all nozzles in the same inkjet area through the liquid supply tube to realize inkjet of the ink filling cartridge 210.

[0048] The negative pressure ink suction assembly 300 further includes a negative pressure pump, which is disposed on the ink return box 310 to generate negative pressure in the ink return box 310, so that the ink return box 310 can form suction and suck the ink in the ink cavity through the liquid supply pipe. After the inkjet printing is completed, the negative pressure pump can generate negative pressure to suck the residual ink in the ink cavity into the ink return box 310.

[0049] It should be noted here that during the inkjet printing process, the injection pump generates positive pressure and transports it to the ink chamber through the liquid supply tube, so that the ink in the ink chamber is sprayed onto the substrate. At this time, if the pressure in the ink chamber is too high, a negative pressure pump can be used to generate negative pressure to balance the pressure in the ink chamber, so that the inkjet pressure is within a pressure range suitable for the current substrate.

[0050] In this embodiment, in order to accurately detect the pressure in the ink cavity, the printing machine inkjet system provided in this embodiment also includes multiple pressure sensors. Multiple pressure sensors are arranged in the ink cavities of multiple nozzles in a one-to-one correspondence to measure the pressure in the ink cavity of the current nozzle. The negative pressure pump can be controlled to run or shut down according to the measurement results of the pressure sensor, so as to achieve precise control of the pressure in the ink cavity and realize voltage stabilization operation, so that the pressure in the ink cavity is within a suitable range, thereby further improving the effect of inkjet printing.

[0051] In addition, in this embodiment, the inkjet system of the printing machine further includes an ink circulation assembly 600. The ink circulation assembly 600 includes a liquid guide tube 610 and a liquid suction pump 620. One end of the liquid guide tube 610 is connected to the ink filling cartridge 210, and the other end is connected to the return ink cartridge 310. The liquid suction pump 620 is disposed on the liquid guide tube 610 to suck the ink in the return ink cartridge 310 into the ink filling cartridge 210.

[0052] Specifically, after the amount of ink in the ink return cartridge 310 reaches a certain amount, the ink in the ink return cartridge 310 can be sucked out and injected into the injection pump through the suction pump 620 and the liquid guide tube 610. There is no need to manually transfer the ink in the ink return cartridge 310 to the ink injection cartridge 210, thereby achieving the reuse of ink and avoiding waste.

[0053] In this embodiment, the number of the nozzle groups and the number of the tube bodies of the multi-tube structure are both two. The two tube bodies are connected to the nozzles arranged in parallel in the two nozzle groups in a one-to-one correspondence.

[0054] Specifically, in this embodiment, there are two nozzle groups in each inkjet area, and the two nozzle groups arranged in parallel are connected to an ink cartridge through a liquid supply tube to achieve the corresponding connection between the inkjet area and the ink cartridge, and the parallel arrangement of the two nozzle groups can achieve two printings on the same position, thereby ensuring the printing effect.

[0055] In this embodiment, the inkjet area, the positive pressure ink injection assembly 200 and the negative pressure ink suction assembly 300 are connected one by one to form an inkjet mechanism. Multiple inkjet areas, multiple positive pressure ink injection assemblies 200 and multiple negative pressure ink suction assemblies 300 are connected one by one to form multiple inkjet mechanisms.

[0056] Specifically, in this embodiment, multiple inkjet areas, multiple positive pressure ink injection components 200, multiple negative pressure ink absorption components 300 and multiple ink storage components are connected one by one to form multiple inkjet mechanisms, and the multiple inkjet mechanisms are arranged at intervals along the same direction, and the arrangement direction is the same as the arrangement direction of the two inkjet groups in the same inkjet area.

[0057] In this embodiment, the multiple ink cartridges 210 respectively store inks of different colors.

[0058] The multiple ink cartridges 210 contain inks of different colors to achieve multi-color spraying of the substrate.

[0059] Furthermore, in this embodiment, there are four inkjet mechanisms. The four inkjet mechanisms are arranged in the same direction. Each inkjet mechanism is provided with an ink injection cartridge 210, an ink return cartridge 310, a plurality of nozzles and a liquid supply pipe. The ink injection cartridge 210 generates positive pressure to inject ink into the ink chambers of the plurality of nozzles through the liquid supply pipes and print, and the ink return cartridge 310 generates negative pressure to extract the residual ink in the ink chamber to avoid ink remaining in the ink chamber or nozzle.

[0060] In this embodiment, the control valve 500 is a solenoid valve.

[0061] The solenoid valve is a valve that uses electromagnetic principles to control the flow of fluids, and has the characteristics of fast response, high reliability and high precision. Specifically, all the solenoid valves in this embodiment are connected to the control system, which can realize the synchronous control of all the solenoid valves in a single inkjet mechanism to ensure the printing effect.

[0062] In this embodiment, the ink cartridge 210 is connected to the shunt pipe 400 through a solenoid valve. The ink in the ink cartridge 210 enters the shunt pipe 400 after passing through the solenoid valve, and is shunted in the shunt pipe 400 to be transported to each ink cavity. Similarly, the ink return cartridge 310 is also connected to the shunt pipe 400 through a solenoid valve. The solenoid valve can realize auxiliary control of negative pressure ink injection of the positive pressure ink cartridge 210. When the injection pump or the negative pressure pump is mistakenly turned on, the solenoid valve can avoid erroneous operation.

[0063] The inkjet printing machine provided in this embodiment includes an inkjet system.

[0064] The two ends of the ink cavity of the nozzle assembly 100 in the inkjet system are respectively connected to the positive pressure ink injection assembly 200 and the negative pressure ink suction assembly 300. The negative pressure ink suction assembly 300 sucks the residual ink out of the ink cavity after the nozzle assembly 100 sprays ink, so as to realize recycling and reuse, prevent waste, and prevent the residual ink from drying up and clogging the nozzle assembly 100. In addition, during the process of the inkjet assembly spraying ink, the negative pressure can be generated by the negative pressure ink suction assembly 300 to balance the pressure in the ink cavity, so as to realize the pressure stabilization control of the ink cavity.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A printing machine inkjet system, characterized in that: Applicable to inkjet printing machines, including: A nozzle assembly (100), a positive pressure ink injection assembly (200), and a negative pressure ink absorption assembly (300); The nozzle assembly (100) comprises an ink cavity and a nozzle, wherein the ink cavity is used to store ink, and the nozzle is connected to the ink cavity and is used to eject ink; The positive pressure ink injection assembly (200) is connected to one end of the ink cavity, and the positive pressure ink injection assembly (200) is used to generate pressure to inject ink into the ink cavity; The negative pressure ink suction component (300) is connected to the other end of the ink chamber, and the negative pressure ink suction component (300) is used to generate negative pressure to suck the ink in the ink chamber.

2. The inkjet system of a printing machine according to claim 1, characterized in that: The nozzle assembly (100) comprises a plurality of nozzles; The plurality of nozzles are arranged in the same direction to form a nozzle group, and the plurality of nozzle groups are arranged in parallel to form an inkjet area; The ink jetting area is connected to the positive pressure ink injection assembly (200) and the negative pressure ink absorption assembly (300) in a one-to-one correspondence.

3. The inkjet system of a printing machine according to claim 2, characterized in that: The positive pressure ink injection assembly (200) comprises an ink injection box (210), and the negative pressure ink absorption assembly (300) comprises an ink return box (310); The ink filling box (210) and the ink return box (310) are both used for storing ink.

4. The inkjet system of a printing machine according to claim 3, characterized in that: The ink supply system of the inkjet printer also includes a shunt pipe (400) and a control valve (500); The liquid inlet end of the diverter tube (400) is a single-tube structure, and the liquid outlet end of the diverter tube (400) is a multi-tube structure; The control valve (500) is connected to the liquid inlet end of the diverter pipe (400) to form a liquid supply pipe; There are multiple liquid supply pipes, and the ink filling box (210) and the inkjet area, and the ink return box (310) and the inkjet area are connected through the liquid supply pipes. The pipe openings of the multi-tube structure are connected one-to-one with the multiple parallel nozzles.

5. The inkjet system of a printing machine according to claim 4, characterized in that: The printing machine inkjet system further comprises an ink circulation component (600), wherein the ink circulation component (600) comprises a liquid guide tube (610) and a liquid suction pump (620); One end of the liquid guide tube (610) is connected to the ink injection box (210), and the other end is connected to the ink return box (310); The liquid suction pump (620) is arranged on the liquid guiding tube (610) to suck the ink in the ink return box (310) into the ink filling box (210).

6. The inkjet system of a printing machine according to claim 4, characterized in that: The number of the nozzle group and the number of the tube bodies of the multi-tube structure are both two; The two tube bodies are connected to the spray heads arranged in parallel in the two spray head groups in a one-to-one correspondence.

7. The inkjet system of a printing machine according to claim 3, characterized in that: The plurality of ink filling boxes (210) respectively store inks of different colors.

8. The inkjet system of a printing machine according to claim 2, characterized in that: The inkjet area, the positive pressure ink injection assembly (200) and the negative pressure ink absorption assembly (300) are connected in a one-to-one correspondence to form an inkjet mechanism; A plurality of the inkjet areas, a plurality of the positive pressure ink injection components (200) and a plurality of the negative pressure ink suction components (300) are connected in a one-to-one correspondence to form a plurality of the inkjet mechanisms.

9. The inkjet system of a printing machine according to claim 4, characterized in that: The control valve (500) is a solenoid valve.

10. An inkjet printing machine, characterized in that: Comprising the inkjet system as claimed in any one of claims 1 to 9.

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