Ink jet device and ink jet printer

Abstract

The utility model relates to the technical field of ink jet machines, and discloses an ink jet device and an ink jet machine. The ink supply assembly comprises a conveying part and a first heating part, the conveying part is connected with the spray head assembly, and the first heating part is arranged on the conveying part; the nozzle mounting assembly comprises a mounting part, a second heating part, a temperature detection part and a third heating part, the mounting part is provided with a mounting position for mounting the nozzle assembly, the second heating part, the temperature detection part and the third heating part are arranged on the mounting part, and the second heating part continuously heats so that the mounting part can be in a preset temperature range; the temperature of all positions of the mounting part is detected in real time through the temperature detection part, when the local temperature of the mounting part is low, auxiliary heating can be conducted on the positions through the third heating part, all the positions of the mounting part can stably reach preset values, and then it is guaranteed that the heating condition areas of the spray head assembly are kept consistent; and accurate temperature control of each position is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet machines, in particular to an inkjet device and an inkjet machine. Background Art

[0002] UV ink is a kind of ultraviolet light curing ink. When the UV inkjet machine is working normally, it has high requirements on the working temperature of the ink. The working temperature of the ink needs to be maintained at the preset working temperature. If the working temperature of the ink is too high or too low, it will affect the printing quality.

[0003] At present, in order to keep the temperature of the ink sprayed by the inkjet machine at a preset temperature, a heating structure is usually set near the nozzle structure of the inkjet machine. Although this method can increase the temperature of the nozzle structure, the nozzle structure is relatively complex and the heating method of the heating structure is relatively single, resulting in poor temperature uniformity at various positions of the nozzle structure, causing differences in the temperature of the ink sprayed by the same nozzle structure, which in turn affects the printing quality of the inkjet machine. Utility Model Content

[0004] In view of this, the utility model provides an inkjet device and an inkjet machine to solve the problem of poor heating uniformity in the heating form of the existing nozzle structure.

[0005] In the first aspect, the utility model provides an inkjet device for spraying UV ink, comprising: a nozzle assembly; an ink supply assembly, comprising a conveying part and a first heating part, the conveying part having a conveying cavity for conveying UV ink, the conveying part being connected to the nozzle assembly, the first heating part being arranged at the conveying part to heat the UV ink in the conveying cavity; a nozzle mounting assembly, comprising a mounting part, a second heating part, a temperature detection part and a third heating part, the mounting part having a mounting position for mounting the nozzle assembly, the second heating part, the temperature detection part and the third heating part being arranged at the mounting assembly, the second heating part being suitable for continuously heating the nozzle assembly, and the third heating part being suitable for separately heating a position of the mounting part where the local temperature of the mounting part measured by the temperature detection part is relatively low.

[0006] Beneficial effect: A second heating part, a temperature detection part and a third heating part are arranged on the mounting part. The second heating part continuously heats the mounting part so that the mounting part can be within a preset temperature range. The temperature of each position of the mounting part is detected in real time by the temperature detection part. When the local temperature of the mounting part is low, the third heating part can be used to perform auxiliary heating on that position, so that each position of the mounting part can stably reach the preset value, thereby ensuring that the heating condition of the nozzle assembly remains consistent, realizing precise temperature control of each position, and effectively solving the problem of poor heating uniformity in the heating form of the existing nozzle structure.

[0007] In an optional embodiment, the delivery part includes an ink storage structure, a first delivery structure and a second delivery structure, the ink storage structure, the first delivery structure, the nozzle assembly, the second delivery structure and the ink storage structure are connected in sequence to form a circulating ink delivery path, and the first heating part includes a first heating structure, a second heating structure and a third heating structure, the first heating structure is arranged on the ink storage structure, the second heating structure is arranged on the first delivery structure, and the third heating structure is arranged on the second delivery structure.

[0008] Beneficial effect: After this type of ink supply assembly is assembled with the nozzle assembly, since each structure is provided with a corresponding heating structure, when the ink circulates in the ink supply passage, it can be ensured that each position of the ink is at a preset temperature during the circulation process.

[0009] In an optional embodiment, the first conveying structure includes a first conveying pump, a first accommodating chamber, and a first pressure regulating member; the second conveying structure includes a second accommodating chamber and a second pressure regulating member; the first accommodating chamber is connected to the ink storage structure through the first conveying pump; the input port of the nozzle assembly is connected to the first accommodating chamber; the output port of the nozzle assembly is connected to the ink storage structure through the second accommodating chamber; the first pressure regulating member is connected to the first accommodating chamber; and the second pressure regulating member is connected to the second accommodating chamber.

[0010] Beneficial effect: The pressure in the corresponding accommodating chamber is adjusted by the first pressure regulating member and the second pressure regulating member, so that a stable and controllable pressure difference is formed between the first accommodating chamber and the second accommodating chamber, thereby ensuring the stability and reliability of ink supply.

[0011] In an optional embodiment, the first conveying structure also includes a first temperature sensor arranged in the first accommodating cavity, the second conveying structure also includes a second temperature sensor arranged in the second accommodating cavity, and / or the conveying part also includes a pressure detector respectively connected to the first accommodating cavity and the second accommodating cavity.

[0012] Beneficial effects: The temperature of the ink in the corresponding accommodating cavity can be monitored in real time by the temperature sensor, thereby realizing a stable and reliable ink temperature detection process. The pressure in the first accommodating cavity and the second accommodating cavity can be detected by the pressure detector respectively, thereby accurately controlling the operation of the corresponding adjusting member.

[0013] In an optional embodiment, the first conveying structure also includes a first liquid level sensor disposed inside the first accommodating chamber, the second conveying structure also includes a second liquid level sensor disposed inside the second accommodating chamber, and / or the first conveying structure also includes a filter disposed between the first accommodating chamber and the first conveying pump.

[0014] Beneficial effect: The first liquid level sensor and the second liquid level sensor can detect the liquid level height of the ink in the corresponding containing cavity, and can realize accurate monitoring of the liquid level height of the ink.

[0015] In an optional embodiment, the mounting part includes a mounting plate and a cover plate, a mounting position is formed on the mounting plate, the second heating part includes a constant temperature water circulation structure, and the interior of the mounting plate has a mounting hole for the constant temperature water circulation structure to pass through.

[0016] Beneficial effects: The constant temperature water circulation structure can not only heat the nozzle assembly in the installation position, but also realize reverse heat transfer for the overheated nozzle assembly, and can absorb the heat of the overheated nozzle assembly, so that the nozzle assembly is in a stable preset temperature range.

[0017] In an optional embodiment, the third heating part includes a heating wire, the temperature detection part includes a plurality of third temperature sensors, the third temperature sensors are arranged at intervals on the mounting plate to detect the temperature of various positions of the mounting plate, and the heating wire is arranged on the mounting plate or the cover plate to heat a local position of the mounting plate.

[0018] Beneficial effects: The heating wire has a simple structure and is easy to install, and can quickly and efficiently heat a local position of the installation plate. The structure is simple and reliable.

[0019] In the second aspect, the utility model also provides an inkjet machine, which includes: a frame; a base body, which is liftably arranged on the frame and located on one side of a conveying platform; a plurality of the above-mentioned inkjet devices, which are arranged at intervals on the base body; a conveying platform, which is arranged on the frame, and the conveying platform has a conveying surface for conveying a substrate, and the conveying surface is arranged corresponding to the inkjet device.

[0020] In an optional embodiment, the inkjet machine also includes a preheating structure for heating the substrate, the conveying surface has an input side and an output side, the conveying surface forms a working position corresponding to each inkjet device, and each working position of the conveying platform is provided with a preheating structure on one side close to the input side.

[0021] Beneficial effect: The preheating structure can preheat the surface of the substrate so that the surface of the substrate has a certain amount of heat. When the ink is printed on the substrate, there will not be a large temperature difference between the surface of the substrate and the ink, thereby avoiding the problem that the substrate instantly absorbs the heat of the ink and causes a decrease in printing effect.

[0022] In an optional embodiment, the inkjet printer further includes a heating structure for heating the ink on the substrate, and a heating structure is provided on a side of each working position of the conveying platform close to the output side.

[0023] Beneficial effect: The printed ink is heated by the heating structure, so that the temperature of the ink on the substrate continues to rise, thereby increasing the activity of the leveling agent and photoinitiator additives inside the ink and improving the printing effect of the ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an exploded schematic diagram of a nozzle mounting assembly of an inkjet device according to an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the connection between an ink supply assembly and a nozzle assembly of an inkjet device according to an embodiment of the utility model;

[0027] Figure 3 for Figure 2 A structural schematic diagram of the connection between the ink supply assembly and the nozzle assembly shown;

[0028] Figure 4 A three-dimensional schematic diagram of an inkjet machine according to an embodiment of the utility model;

[0029] Figure 5 for Figure 4 A front view of the inkjet printer is shown.

[0030] Description of reference numerals:

[0031] 1. Nozzle assembly;

[0032] 2. Ink supply assembly; 201. Ink storage structure; 202. First delivery structure; 2021. First delivery pump; 2022. First accommodating chamber; 2023. First pressure regulating member; 2024. First temperature sensor; 2025. First liquid level sensor; 2026. Filter; 203. Second delivery structure; 2031. Second accommodating chamber; 2032. Second pressure regulating member; 2033. Second temperature sensor; 2034. Second liquid level sensor; 204. First heating structure; 205. Second heating structure; 206. Third heating structure; 207. Pressure detector; 208. Gas three-way valve; 2081. Air inlet end;

[0033] 3. Nozzle installation assembly; 301. Installation plate; 3011. Installation position; 3012. Installation hole; 3013. Installation slot; 302. Cover plate; 303. Heating wire; 304. Third temperature sensor.

[0034] 4. Frame; 5. Base; 6. Conveying platform; 601. Conveying surface; 7. Preheating structure; 8. Heating structure; 9. Curing structure. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0036] Combine the following Figures 1 to 5 , describing an embodiment of the utility model.

[0037] According to an embodiment of the utility model, on the one hand, an inkjet device is provided for spraying UV ink, the inkjet device comprising: a nozzle assembly 1, an ink supply assembly 2 and a nozzle mounting assembly 3, the ink supply assembly 2 comprising a conveying portion and a first heating portion, the conveying portion having a conveying cavity for conveying UV ink, the conveying portion being connected to the nozzle assembly 1, the first heating portion being arranged at the conveying portion to heat the UV ink in the conveying cavity; the nozzle mounting assembly 3 comprising a mounting portion, a second heating portion, a temperature detecting portion and a third heating portion, the mounting portion having a mounting position 3011 for mounting the nozzle assembly 1, the second heating portion, the temperature detecting portion and the third heating portion being arranged at the mounting assembly, the second heating portion being suitable for continuously heating the nozzle assembly 1, and the third heating portion being suitable for separately heating a position of the mounting portion where the local temperature of the mounting portion measured by the temperature detecting portion is relatively low.

[0038] The inkjet device using this embodiment is provided with a second heating part, a temperature detection part and a third heating part on the mounting part. The second heating part continuously heats the mounting part so that the mounting part can be within a preset temperature range. The temperature of each position of the mounting part is detected in real time by the temperature detection part. When the local temperature of the mounting part is low, the third heating part can be used to perform auxiliary heating on the position, so that each position of the mounting part can stably reach the preset value, thereby ensuring that the heating condition of the nozzle assembly 1 remains consistent, realizing precise temperature control of each position, and effectively solving the problem of poor heating uniformity in the heating form of the existing nozzle structure.

[0039] Specifically, the temperature detection part and the third heating part are signal connected. In order to achieve precise control of the internal temperature of the nozzle assembly 1, a dedicated temperature detection structure is usually provided inside the nozzle assembly 1. The data measured by the temperature detection part on the mounting part of this embodiment can be compared with the temperature detection structure inside the nozzle assembly 1 to determine whether the temperatures of the two are consistent. For positions where the temperatures are inconsistent, a feedback signal can be output and auxiliary heating can be performed through the third heating part.

[0040] Among them, there is no limitation on the number and structure of the nozzles in the nozzle assembly 1, and it can be one or more, which can be selected according to the needs; there is no limitation on the specific number and form of the second heating part and the third heating part, and it can be one or more, and it can be heated by heat pipe heating, constant temperature water circulation heating, and electric heating structure.

[0041] In this embodiment, the delivery part includes an ink storage structure 201, a first delivery structure 202 and a second delivery structure 203. The ink storage structure 201, the first delivery structure 202, the nozzle assembly 1, the second delivery structure 203 and the ink storage structure 201 are connected in sequence to form a circulating ink delivery path. The first heating part includes a first heating structure 204, a second heating structure 205 and a third heating structure 206. The first heating structure 204 is arranged on the ink storage structure 201, the second heating structure 205 is arranged on the first delivery structure 202, and the third heating structure 206 is arranged on the second delivery structure 203. After this form of ink supply assembly 2 is assembled with the nozzle assembly 1, since each structure is provided with a corresponding heating structure, when the ink circulates in the ink delivery path, it can be ensured that the ink is at a preset temperature at each position during the circulation process.

[0042] It can be understood that, as an alternative embodiment, the number of conveying structures is not limited to two, and can also be set to one or more than three according to needs.

[0043] Specifically, Figure 3 As shown, the first heating structure 204 and the second heating structure 205 are heating elements controlled by electricity, and the third heating structure 206 is a water bath constant temperature heating structure arranged on the side wall of the ink storage structure 201. The water bath constant temperature heating structure can keep the ink in the ink storage structure 201 stable at a preset temperature. The first heating structure 204 and the second heating structure 205 can heat the ink on the corresponding conveying structure according to demand. The overall structure is simple and reliable.

[0044] In this embodiment, the first conveying structure 202 includes a first conveying pump 2021, a first accommodating chamber 2022, and a first pressure regulating member 2023. The second conveying structure 203 includes a second accommodating chamber 2031 and a second pressure regulating member 2032. The first accommodating chamber 2022 is connected to the ink storage structure 201 through the first conveying pump 2021. The input port of the nozzle assembly 1 is connected to the first accommodating chamber 2022. The output port of the nozzle assembly 1 is connected to the ink storage structure 201 through the second accommodating chamber 2031. The first pressure regulating member 2023 is connected to the first accommodating chamber 2022. The second pressure regulating member 2032 is connected to the second accommodating chamber 2031. The pressures in the corresponding accommodating chambers are adjusted by the first pressure regulating member 2023 and the second pressure regulating member 2032, so that a stable and controllable pressure difference is formed between the first accommodating chamber 2022 and the second accommodating chamber 2031, thereby driving the ink to flow slowly through the nozzle assembly 1, thereby ensuring the stability and reliability of ink supply.

[0045] Specifically, there is no limitation on the specific types of the first pressure regulating member 2023 and the second pressure regulating member 2032. They may be structures for regulating the volume in the corresponding accommodating chamber, or they may be pump structures capable of extracting or filling gas, as long as they can change the pressure in the corresponding accommodating chamber.

[0046] Furthermore, if Figure 3 As shown, a reflux port is provided at the position where the second accommodating cavity 2031 communicates with the ink storage structure 201 , and when the ink in the second accommodating cavity 2031 reaches the height of the reflux port, it naturally flows back into the ink storage structure 201 .

[0047] In this embodiment, the first conveying structure 202 also includes a first temperature sensor 2024 arranged in the first accommodating cavity 2022, and the second conveying structure 203 also includes a second temperature sensor 2033 arranged in the second accommodating cavity 2031. The temperature sensor can monitor the temperature of the ink in the corresponding accommodating cavity in real time, thereby realizing a stable and reliable ink temperature detection process.

[0048] Specifically, Figure 3 As shown, the first temperature sensor 2024 and the second temperature sensor 2033 are arranged near the bottom of the corresponding accommodating cavity so that they can be immersed in ink.

[0049] In this embodiment, the conveying part also includes a pressure detector 207 which is connected to the first accommodating chamber 2022 and the second accommodating chamber 2031 respectively. The pressure detector 207 detects the pressure in the first accommodating chamber 2022 and the second accommodating chamber 2031 respectively, and can accurately control the operation of the corresponding adjusting parts, thereby forming a precise, stable and controllable pressure difference between the first accommodating chamber 2022 and the second accommodating chamber 2031.

[0050] Specifically, Figure 3 As shown, the first conveying structure 202 also includes a gas three-way valve 208, and the first accommodating chamber 2022 is connected to the pressure detector 207 through the gas three-way valve 208, and the gas three-way valve 208 also has an air inlet end 2081 connected to a compressed gas source. The first pressure regulating member 2023 and the second pressure regulating member 2032 are both gas pumps, which extract gas from the first accommodating chamber 2022 and the second accommodating chamber 2031 to adjust the pressure therein, and the compressed gas source can enter the first accommodating chamber 2022 through the air inlet end 2081 to replenish the gas therein, and the structure is simple and reliable.

[0051] In this embodiment, the first conveying structure 202 also includes a first liquid level sensor 2025 arranged inside the first accommodating cavity 2022, the second conveying structure 203 also includes a second liquid level sensor 2034 arranged inside the second accommodating cavity 2031, and / or the first conveying structure 202 also includes a filter 2026 arranged between the first accommodating cavity 2022 and the first conveying pump 2021. The first liquid level sensor 2025 and the second liquid level sensor 2034 can detect the liquid level of the ink in the corresponding accommodating cavity, thereby realizing accurate monitoring of the liquid level of the ink.

[0052] In this embodiment, the mounting portion includes a mounting plate 301 and a cover plate 302, and a mounting position 3011 is formed on the mounting plate 301. The second heating portion includes a constant temperature water circulation structure. The interior of the mounting plate 301 has a mounting hole 3012 for the constant temperature water circulation structure to pass through. The constant temperature water circulation structure can not only heat the nozzle assembly 1 in the mounting position 3011, but also realize reverse heat transfer for the overheated nozzle assembly 1, and can absorb the heat of the overheated nozzle assembly 1, so that the nozzle assembly 1 is in a stable preset temperature range.

[0053] It can be understood that, as an alternative embodiment, the second heating part can also be an electric heating structure.

[0054] Specifically, Figure 1 As shown, a plurality of mounting holes 3012 for the pipes of the constant temperature water circulation structure to pass through are correspondingly arranged on the mounting plate 301 along the length direction, and the overall structure is simple and reliable.

[0055] Furthermore, the channel inside the mounting hole 3012 extends along the arrangement direction of the mounting positions 3011, and the circulation pipeline of the constant temperature water circulation structure passes through each mounting position 3011. The circulation pipeline is introduced with set warm water, so that the warm water flows through the entire mounting plate 301 and then transfers the heat to the mounting plate 301, so that the warm water can fully contact the mounting plate 301 for heat exchange.

[0056] In this embodiment, the third heating part includes a heating wire 303, and the temperature detection part includes a plurality of third temperature sensors 304. The third temperature sensors 304 are arranged at intervals on the mounting plate 301 to detect the temperature of various positions of the mounting plate 301. The heating wire 303 is arranged on the mounting plate 301 or the cover plate 302 to heat a local position of the mounting plate 301. The heating wire 303 has a simple structure and is easy to install. It can quickly and efficiently heat a local position of the mounting plate 301. The structure is simple and reliable.

[0057] Specifically, Figure 1 As shown, a mounting groove 3013 for mounting the heating wire 303 is provided on the upper edge of the mounting plate 301 , and the mounting groove 3013 is bent and extends and passes through each mounting position 3011 in sequence; a plurality of third temperature sensors 304 are dispersedly arranged on the mounting plate 301 .

[0058] It can be understood that, as an alternative implementation, the third temperature sensors 304 can also be dispersedly disposed at corresponding positions of the cover plate 302 .

[0059] According to an embodiment of the utility model, on the other hand, an inkjet machine is provided, which includes: a frame 4, a base body 5, a plurality of the above-mentioned inkjet devices and a conveying platform 6, the base body 5 is liftably arranged on the frame 4 and is located on one side of the conveying platform 6; a plurality of inkjet devices are arranged at intervals on the base body 5, the conveying platform 6 is arranged on the frame 4, and the conveying platform 6 has a conveying surface 601 for conveying a substrate, and the conveying surface 601 is arranged corresponding to the inkjet device.

[0060] In this embodiment, the inkjet machine also includes a preheating structure 7 for heating the substrate. The conveying surface 601 has an input side and an output side. The conveying surface 601 forms a working position corresponding to each inkjet device. Each working position of the conveying platform 6 is provided with a preheating structure 7 on one side close to the input side. When the substrate enters the conveying platform 6, the preheating structure 7 can preheat the surface of the substrate so that the surface of the substrate has a certain amount of heat. When the ink is printed on the substrate, there will not be a large temperature difference between the surface of the substrate and the ink, thereby avoiding the problem of the substrate instantly absorbing the heat of the ink and causing a decrease in the printing effect.

[0061] The input side refers to Figure 5 The "right" side indicated by the arrow in the middle refers to the output side. Figure 5 The side pointed by the arrow in the middle in the "left" direction.

[0062] In this embodiment, the inkjet printer also includes a heating structure 8 for heating the ink on the substrate. A heating structure 8 is provided on one side of each working position of the conveying platform 6 close to the output side. After the ink is printed on the substrate, the printed ink is heated by the heating structure 8, so that the temperature of the ink on the substrate continues to rise, thereby increasing the activity of the leveling agent and photoinitiator additives inside the ink, improving the printing effect of the ink, and further improving the effect of subsequent ink curing and drying.

[0063] Specifically, the preheating structure 7 is a drying lamp, and the heating structure 8 is a heating lamp.

[0064] It can be understood that the preheating structure 7 and the heating structure 8 are not limited to the above-mentioned structural forms, and can also be a heating structure capable of blowing hot air, or a heating rod with electric heating, etc., as long as they can meet the heating requirements.

[0065] like Figure 5 As shown, the inkjet machine includes three inkjet devices arranged at intervals. In this embodiment, the inkjet machine also includes a curing structure 9 for curing and drying the ink printed on the substrate.

[0066] The preheating structure 7 and the heating structure 8 are respectively installed on the conveying platform. When the substrate enters the inkjet machine for printing production, the preheating structure 7 will first preheat the surface of the substrate, and then print the ink through the first inkjet device, and then the temperature of the ink printed on the substrate will be increased through the heating structure 8 to increase the activity of the leveling agent and photoinitiator inside the ink. At this time, the curing structure 9 is used to perform the initial UV pre-curing drying of the ink printed by the first inkjet device, and preliminarily position and pre-dry the ink; the substrate continues to be conveyed, the preheating structure 7 continues to preheat the surface of the substrate, and the ink is printed by the second inkjet device. The heating structure 8 increases the temperature of the ink printed by the second inkjet device on the substrate, and then the curing structure 9 is used to perform the initial UV pre-curing drying of the ink; the substrate continues to be conveyed, the preheating structure 7 continues to preheat the surface of the substrate, and the ink is printed by the third inkjet device. The heating structure 8 increases the temperature of the ink printed on the substrate, and finally the curing structure 9 is used to perform the final UV total curing drying of the previously printed ink.

[0067] By applying the inkjet machine of this embodiment, the inkjet device can ensure that the temperature of the ejected ink is uniform and stable, and the preheating structure 7 and the heating structure 8 can respectively increase the temperature of the substrate and the printed ink, ensuring that even at a lower ambient temperature, the ink can still maintain a good leveling effect and curing and drying effect.

[0068] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An inkjet device for spraying UV ink, characterized in that: include: Spray head assembly (1); An ink supply assembly (2) comprises a conveying portion and a first heating portion, wherein the conveying portion has a conveying cavity for conveying the UV ink, the conveying portion is connected to the nozzle assembly (1), and the first heating portion is arranged on the conveying portion to heat the UV ink in the conveying cavity; A nozzle mounting assembly (3) comprises a mounting portion, a second heating portion, a temperature detection portion and a third heating portion, wherein the mounting portion has a mounting position (3011) for mounting the nozzle assembly (1), the second heating portion, the temperature detection portion and the third heating portion are arranged on the mounting assembly, the second heating portion is suitable for continuously heating the nozzle assembly (1), and the third heating portion is suitable for separately heating a position of the mounting portion where the local temperature is relatively low as measured by the temperature detection portion.

2. The inkjet device according to claim 1, characterized in that: The conveying section includes an ink storage structure (201), a first conveying structure (202) and a second conveying structure (203); the ink storage structure (201), the first conveying structure (202), the nozzle assembly (1), the second conveying structure (203) and the ink storage structure (201) are sequentially connected to form a circulating ink supply path; the first heating section includes a first heating structure (204), a second heating structure (205) and a third heating structure (206); the first heating structure (204) is arranged on the ink storage structure (201), the second heating structure (205) is arranged on the first conveying structure (202), and the third heating structure (206) is arranged on the second conveying structure (203).

3. The inkjet device according to claim 2, characterized in that: The first conveying structure (202) comprises a first conveying pump (2021), a first accommodating chamber (2022), and a first pressure regulating member (2023); the second conveying structure (203) comprises a second accommodating chamber (2031) and a second pressure regulating member (2032); the first accommodating chamber (2022) is connected to the ink storage structure (201) via the first conveying pump (2021); the input port of the nozzle assembly (1) is connected to the first accommodating chamber (2022); the output port of the nozzle assembly (1) is connected to the ink storage structure (201) via the second accommodating chamber (2031); the first pressure regulating member (2023) is connected to the first accommodating chamber (2022); and the second pressure regulating member (2032) is connected to the second accommodating chamber (2031).

4. The inkjet device according to claim 3, characterized in that: The first conveying structure (202) further comprises a first temperature sensor (2024) disposed in the first containing cavity (2022), and the second conveying structure (203) further comprises a second temperature sensor (2033) disposed in the second containing cavity (2031). And / or, the conveying portion further includes a pressure detector (207) respectively connected to the first accommodating chamber (2022) and the second accommodating chamber (2031).

5. The inkjet device according to claim 3, characterized in that: The first conveying structure (202) further comprises a first liquid level sensor (2025) disposed inside the first containing cavity (2022), and the second conveying structure (203) further comprises a second liquid level sensor (2034) disposed inside the second containing cavity (2031). And / or, the first delivery structure (202) further includes a filter (2026) disposed between the first accommodating chamber (2022) and the first delivery pump (2021).

6. The inkjet device according to any one of claims 1 to 5, characterized in that: The mounting portion comprises a mounting plate (301) and a cover plate (302); the mounting plate (301) is formed with the mounting position (3011); the second heating portion comprises a constant temperature water circulation structure; the mounting plate (301) has a mounting hole (3012) inside for the constant temperature water circulation structure to pass through.

7. The inkjet device according to claim 6, characterized in that: The third heating part comprises a heating wire (303), the temperature detection part comprises a plurality of third temperature sensors (304), the third temperature sensors (304) are arranged at intervals on the mounting plate (301) to detect the temperature of various positions of the mounting plate (301), and the heating wire (303) is arranged on the mounting plate (301) or the cover plate (302) to heat a local position of the mounting plate (301).

8. An inkjet printer, characterized in that: include: A frame (4), a base (5), a plurality of inkjet devices according to any one of claims 1 to 7, and a conveying platform (6); The seat body (5) is liftably arranged on the frame (4) and is located on one side of the conveying platform (6); A plurality of inkjet devices are arranged at intervals on the base (5); The conveying platform (6) is arranged on the frame (4), and the conveying platform (6) has a conveying surface (601) for conveying the substrate, and the conveying surface (601) is arranged corresponding to the inkjet device.

9. The inkjet printer according to claim 8, characterized in that: The inkjet machine also includes a preheating structure (7) for heating the substrate. The conveying surface (601) has an input side and an output side. The conveying surface (601) forms a working position corresponding to each inkjet device. The preheating structure (7) is provided on a side of each working position of the conveying platform (6) close to the input side.

10. The inkjet printer according to claim 9, characterized in that: The inkjet printer further comprises a heating structure (8) for heating the ink on the substrate, and each working position of the conveying platform (6) is provided with the heating structure (8) on a side close to the output side.

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