An inkjet printing system

Abstract

The application belongs to the field of inkjet printing and mainly relates to an inkjet printing system, which comprises a base, a substrate driving mechanism for driving a substrate to a printing position, an array printing mechanism, the array printing mechanism comprising a first mounting plate, an array nozzle module and a first observation camera, the array nozzle module being detachably mounted on the first mounting plate, the first observation camera being used for observing the printing effect of the substrate, a defect repairing mechanism comprising a single-nozzle nozzle module, a positioning camera and a second observation camera, the positioning camera being used for positioning to a corresponding defect coordinate position in the printing effect, the single-nozzle nozzle module being arranged at an angle with a third plane and being used for repairing processing on the defect coordinate position, the second observation camera being arranged in parallel with the third plane and being located directly above the single-nozzle nozzle module and being used for observing the repairing track of the single-nozzle nozzle module so as to adjust the repairing path of the defect repairing mechanism. The precision of inkjet printing is improved.

Description

Technical Field

[0001] This application relates to the field of inkjet printing, and particularly to inkjet printing systems. Background Technology

[0002] Currently, inkjet printing technology is widely used in the fabrication of OLED (Organic Light-Emitting Diode) devices. Some functional layer materials are already manufactured using inkjet printing. As a form of inkjet printing, functional material ink is injected into a substrate through an inkjet printhead, and then a film-forming process is used to create the corresponding functional layer from the ink in the substrate.

[0003] In inkjet printing, the condition of the ink film is a crucial indicator of the printing effect, and the printhead's control over the ink is one of the key factors affecting the film. Therefore, printhead control is a critical aspect of inkjet printing. In related technologies, a pre-planned printing algorithm for the printhead is used to eject ink from the cartridge onto the substrate. However, if deviations from the expected printing process occur, such as a nozzle clogging during printing, the ink on the substrate will be incomplete, leading to an unsatisfactory ink film. Summary of the Invention

[0004] This application provides an inkjet printing system to solve the problems of incomplete ink and unsatisfactory film layer in related technologies, thereby improving the accuracy of inkjet printing.

[0005] To achieve the above objectives, this application provides an inkjet printing system, comprising: a base 100, with a crossbeam 101 disposed above the base 100; a substrate driving mechanism 200 disposed on the base 100, the substrate driving mechanism 200 being parallel to a first plane on which the base 100 is located, for driving the substrate to a printing position; and an array printing mechanism 300 disposed on the crossbeam 101, the array printing mechanism 300 including a first mounting plate 301, an array printhead module 302, and a first observation camera 303; the array printhead module 302 being detachably mounted on the first mounting plate 301; and the first observation camera 303 being mounted on the first mounting plate 301 and positioned parallel to a second plane on which the crossbeam 101 is located. The first, second, and third planes are arranged parallel to each other for observing the printing effect of the substrate. A defect repair mechanism 400 is mounted on the crossbeam 101. The defect repair mechanism 400 includes a single-jet nozzle module 401, a positioning camera 402, and a second observation camera 403. The positioning camera 402 is used to locate the corresponding defect coordinate position in the printing effect. The single-jet nozzle module 401 is angled to the third plane and used to repair the defect coordinate position. The second observation camera 403 is parallel to the third plane and located directly above the single-jet nozzle module 401, used to observe the repair trajectory of the single-jet nozzle module 401 to adjust the repair path of the defect repair mechanism 400. The second, first, and third planes are perpendicular to each other.

[0006] In some embodiments, the array printhead module 302 includes a housing 304, an array printhead 305, a first voltage control component 306, a first air pressure control component 307, and a first ink bottle 308. The housing 304 is detachably connected to the first mounting plate 301. The first air pressure control component 307 is connected to the first ink bottle 308, and the first ink bottle 308 is connected to the array printhead 305. The first air pressure control component 307 can control the flow rate of the first ink bottle 308 to control the amount of ink ejected from the array printhead 305. The first voltage control component 306 is connected to the array printhead 305 and is used to control the ejection state of the array printhead 305. The number of array printheads 305 can be one or more. When the number of array printheads 305 is multiple, the array printheads 305 are staggered along the length of the crossbeam, and the ends of adjacent array printheads 305 overlap.

[0007] In some embodiments, the single-jet printhead module 401 includes a single-jet printhead 4011, a second air pressure control component 4012, a second voltage control component 4013, and a second ink bottle; wherein, the second voltage control component 4013 is connected to the single-jet printhead 4011 and is used to control the ejection state of the single-jet printhead 4011; the second air pressure control component 4012 is connected to the second ink bottle, and the second ink bottle is connected to the single-jet printhead 4011, and the second air pressure control component 4012 is used to control the flow rate of the second ink bottle, so as to control the amount of ink ejected from the single-jet printhead 4011.

[0008] In some embodiments, the defect repair mechanism 400 further includes a first curing lamp 4014 and a second adjusting member 4020. One end of the second adjusting member 4020 is fixedly connected to the first curing lamp 4014, and the other end is rotatably connected to the second mounting plate 4015. The first curing lamp 4014 is used to cure the ink sprayed by the single-jet nozzle 4011. It can be rotated according to the position of the single-jet nozzle 4011 to adjust the position of the first curing lamp 4014, ensuring that the adjusted first curing lamp 4014 is as close to the single-jet nozzle 4011 as possible without directly shining on it.

[0009] In some embodiments, the defect repair mechanism 400 includes a second mounting plate 4015 and a first adjusting assembly; the second mounting plate 4015 is fixedly connected to the crossbeam 101, and the single spray nozzle 4011 is connected to the second mounting plate 4015 via the first adjusting assembly; the first adjusting assembly includes a first fixing block 4016, a first adjusting block 4017, a second fixing block 4018, and a second adjusting block 4019; the first fixing block 4016 is fixedly connected to the second mounting plate 4015, and the first adjusting block 4017 is fixedly connected to the first fixing block 4018. The fixed block 4016 is slidably connected, the second fixed block 4018 is fixedly connected to the first adjusting block 4017, the second adjusting block 4019 is slidably connected to the second fixed block 4018, and the second adjusting block 4019 is fixedly connected to the single spray nozzle 4011; wherein, the first adjusting block 4017 and the second adjusting block 4019 are set at an angle, and both are set at an angle to the third plane, and the cooperation of the first adjusting block 4017 and the second adjusting block 4019 enables the single spray nozzle 4011 to move along the conveying direction of the substrate.

[0010] In some embodiments, the inkjet printing system further includes an ink droplet observation mechanism 500, which is disposed on the base 100 and parallel to the first plane. The ink droplet observation mechanism 500 includes an ink droplet observation component 501 and a waste liquid container 502. The ink droplet observation component 501 is used to observe the shape of the ink droplets when the array printhead module 302 prints to the waste liquid container 502, so as to adjust the ink flow rate in the array printhead module 302.

[0011] In some embodiments, the ink droplet observation assembly 501 includes a fourth observation camera 5011 and a fifth observation camera 5012, which are arranged side by side on one side of the substrate driving mechanism 200; wherein, the fourth observation camera 5011 is used to observe the cone jet diameter of the ink droplet, and the fifth observation camera 5012 is used to observe the atomization cone angle of the ink droplet.

[0012] In some embodiments, the substrate driving mechanism 200 includes a support member 201, a heat insulation member 202, a rotating assembly 203, and a lifting assembly 204. The heat insulation member 202 is disposed between the support member 201 and the rotating assembly 203 and is fixedly connected to the support member 201 and the rotating assembly 203. The support member 201 includes a heating plate 2011 and a ceramic plate 2012, which are stacked. The heating plate 2011 is disposed below the ceramic plate 2012 and is used to heat the ceramic plate 2012, which is used to heat and cure the substrate. The rotating assembly 203 is fixedly connected to the heat insulation member 202 and is used to adjust the angle of the substrate. The lifting assembly 204 is disposed below the support member 201 and is slidably connected to the support member 201, and is used to adjust the height of the substrate.

[0013] In some embodiments, the inkjet printing system further includes a waste liquid collection assembly 600, which includes a collection tank 601, a first liquid level sensor 602, a waste liquid tank 603, a second liquid level sensor 604, and a leakage detection sensor 605. The collection tank 601 is connected to the array printhead module 302 via a first pipeline and is used to collect the waste liquid discharged by the array printhead module 302. The waste liquid tank 603 is connected to the collection tank 601 via a second pipeline, and the first liquid level sensor... 602 is used to measure the liquid level in the collection tank 601. When the liquid level in the collection tank 601 reaches a first threshold, it can control the collection tank 601 to discharge waste liquid into the waste liquid bucket 603. The second liquid level measuring sensor 604 is used to measure the liquid level in the waste liquid bucket 603. When the liquid level in the waste liquid bucket 603 reaches a second threshold, it can display an alarm message to prompt the object to clean the waste liquid bucket 603. The leakage detection sensor 605 is set on the same plane as the waste liquid bucket 603 and is used to detect whether the waste liquid is leaking.

[0014] In some embodiments, the inkjet printing system further includes a curing mechanism 700, which includes a column 701, a horizontal column 702, a first drive assembly 703, and a second curing lamp 704. The column 701 is disposed on the base 100, the horizontal column 702 is connected to the column 701 and is parallel to the first plane, and the second curing lamp 704 is fixedly connected to the first drive assembly 703. The first drive assembly 703 is disposed on the horizontal column 702 and can drive the second curing lamp 704 to move along the driving direction of the first drive assembly 703.

[0015] The beneficial effects of the technical solution provided in this application include:

[0016] This application provides an inkjet printing system, which includes at least an array printing mechanism and a defect repair mechanism. After the array printing mechanism prints on a substrate, the printing effect on the substrate can be observed by a first observation camera on the array printing mechanism to obtain the coordinate positions of defects. Then, the defect repair mechanism repairs the defect coordinate positions, thereby solving the problem of incomplete ink printing on the substrate, which leads to an unsatisfactory film layer and improving the accuracy of inkjet printing. Moreover, the single-jet printhead module in the defect repair mechanism is set at an angle to the third plane, which is more conducive to the second observation camera in the defect repair mechanism observing its repair trajectory and adjusting the repair path. In addition, the array printhead module on the array printing mechanism can be detachably installed to meet various printing needs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the inkjet printing system provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the array printing mechanism 300 provided in the embodiments of this application;

[0020] Figure 3 This is a schematic diagram of the defect repair mechanism 400 provided in the embodiments of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the array nozzle module 302 provided in the embodiments of this application;

[0022] Figure 5 A schematic diagram of the substrate driving mechanism 200 and the ink droplet observation mechanism 500 provided in the embodiments of this application;

[0023] Figure 6 This is a schematic diagram of the structure of the waste liquid collection assembly 600 provided in the embodiments of this application;

[0024] Figure 7 This is a schematic diagram of the curing mechanism 700 provided in an embodiment of this application. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In related technologies, inkjet printing systems pre-plan the printing algorithm for the printhead, which then ejects ink from the cartridge onto the substrate according to the planned algorithm. However, if deviations from the expected printing process occur, such as a nozzle clogging during printing, the ink printed on the substrate will be incomplete, leading to an unsatisfactory film layer.

[0027] Therefore, this application provides an inkjet printing system, which includes at least an array printing mechanism 300 and a defect repair mechanism 400. The array printing mechanism 300 prints on a substrate according to a pre-planned printing algorithm. Then, a first observation camera 303 on the array printing mechanism 300 observes the printing effect on the substrate to obtain the coordinate positions of defects on the substrate. Subsequently, the defect repair mechanism 400 repairs the defect coordinate positions. This solves the problem of incomplete ink printing on the substrate, leading to an unsatisfactory film layer, improving the accuracy of inkjet printing, and saving inkjet printing costs.

[0028] See Figure 1-3 The inkjet printing system in this embodiment includes a base 100, a substrate driving mechanism 200, an array printing mechanism 300, and a defect repair mechanism 400.

[0029] In some embodiments, a crossbeam 101 is provided above the base 100. A substrate driving mechanism 200 is disposed on the base 100, and the substrate driving mechanism 200 is parallel to a first plane on which the base 100 is located, for driving the substrate to the printing position. An array printing mechanism 300 is disposed on the crossbeam 101, and the array printing mechanism 300 includes a first mounting plate 301, an array nozzle module 302, and a first observation camera 303; the array nozzle module 302 is detachably mounted on the first mounting plate 301; the first observation camera 303 is mounted on the first mounting plate 301 and is disposed parallel to a second plane on which the crossbeam 101 is located, for observing the printing effect of the substrate. A defect repair mechanism 400 is disposed on the crossbeam 101. The defect repair mechanism 400 includes a single-jet nozzle module 401, a positioning camera 402, and a second observation camera 403. The positioning camera 402 is used to locate the corresponding defect coordinate position in the printing effect. The single-jet nozzle module 401 is set at an angle to the third plane and is used to repair the defect coordinate position. The second observation camera 403 is set parallel to the third plane and located directly above the single-jet nozzle module 401 and is used to observe the repair trajectory of the single-jet nozzle module 401 to adjust the repair path of the defect repair mechanism 400. The second plane, the first plane, and the third plane are perpendicular to each other.

[0030] The printing position refers to the position corresponding to the array printing mechanism 300 or the position corresponding to the defect repair mechanism 400. The substrate driving mechanism 200 has two driving axes, X and Y, enabling the substrate to achieve two degrees of freedom (X and Y axes) in the substrate. Therefore, the substrate driving mechanism 200 can drive the substrate not only to the printing position but also to any position on the second plane, such as the curing position. For example, when the array nozzle module 302 is equipped with a dot-jet array nozzle, the defect coordinate position here includes at least the coordinates of the missing pixel. Then, the single-jet nozzle module 401 performs repair processing; that is, when a pixel is missing after the dot-jet array nozzle has finished printing, the single-jet nozzle module 401 locates the pixel position and prints it for repair. The nozzle of the single-jet nozzle module 401 is detachable and can be selected from either a dot-jet or atomizing nozzles according to actual needs. Dot-jet nozzles are more suitable for repairing fixed-point defects, while atomizing nozzles are more suitable for repairing film uniformity. When the array printhead module 302 is equipped with an atomizing array printhead, the defect coordinate position here includes at least the coordinate position of the area with uneven film thickness at the edge. Then, the single printhead module 401 performs the repair process. That is, after the atomizing array printhead finishes printing, the film edge may form a slope due to the lack of force control, resulting in an area with uneven film thickness. The single printhead module 401 locates the corresponding film edge area according to the area with uneven thickness and continuously prints a linear ink in the film edge area to form a barrier at the film edge, ensuring the consistency of film edge thickness, thereby repairing the uneven area of ​​the substrate.

[0031] In this embodiment, after the substrate is printed by the array printing mechanism 300, the printing effect of the substrate can be observed by the first observation camera 303 on the array printing mechanism 300 to obtain the defect coordinate positions. Then, the defect coordinate positions are repaired by the defect repair mechanism 400, which solves the problem of incomplete ink printing on the substrate, resulting in an unsatisfactory film layer, improves the accuracy of inkjet printing, and saves inkjet printing costs. Moreover, the single-jet printhead module 401 in the defect repair mechanism 400 is set at an angle to the third plane, which is more conducive to the second observation camera 403 in the defect repair mechanism 400 observing its repair trajectory and adjusting the repair path. In addition, the detachable installation of the array printhead module 302 on the array printing mechanism 300 can meet various printing needs.

[0032] See in some examples Figure 4The array printhead module 302 includes a housing 304, an array printhead 305, a first voltage control component 306, a first air pressure control component 307, and a first ink bottle 308. The housing 304 is detachably connected to the first mounting plate 301. The first air pressure control component 307 is connected to the first ink bottle 308, and the first ink bottle 308 is connected to the array printhead 305. The first air pressure control component 307 can control the flow rate of the first ink bottle 308 to control the amount of ink ejected from the array printhead 305. The first voltage control component 306 is connected to the array printhead 305 and is used to control the ejection state of the array printhead 305. The number of array printheads 305 can be one or more. When there are multiple array printheads 305, in the length direction of the crossbeam, the array printheads 305 are staggered, and the ends of adjacent array printheads 305 overlap.

[0033] It is worth noting that the housing 304 is detachably connected to the first mounting plate 301. That is, in practical applications, multiple housings 304 can be set up, and different array nozzles 305 are set inside different housings 304, such as piezoelectric array nozzles, or electromagnetic array nozzles, array atomizing nozzle modules, array point spray nozzles, etc., and the appropriate nozzle module is used according to actual needs. Furthermore, the housing 304 is provided with a handle for easy replacement of the housing. In addition, different first voltage control components 306 and air pressure control components 307 can also be set inside different housings 304 to adapt to various application scenarios. In order to facilitate the disassembly of the housing 304, the first mounting plate 301 can be provided with at least one opening. Specifically, the first mounting plate 301 can be set to have two openings, the space provided on the first side is used to control the housing 304 through the handle, and the space provided on the other side is used for disassembly of the housing 304. In other examples, the first mounting plate 301 may be configured to have an opening on one side, and the size of the first mounting plate 301 is larger than the size of the housing 304. The housing 304 can be unlocked on one side and moved toward the side closer to that side.

[0034] In some examples, the first voltage control component 306 can be controlled by a piezoelectric module or by electrohydrodynamic control. Specifically, when voltage control is achieved through electrohydrodynamic control, the first voltage control component 306 includes a power supply and a voltage driver; when voltage control is achieved through a piezoelectric module, the first voltage control component 306 includes a piezoelectric ceramic and a power supply. The first voltage control component 306 can control the ejection state of the array nozzles 305 in real time, ensuring ink stability.

[0035] In some examples, the first air pressure control component 307 includes an air source device, a proportional valve, and a two-way valve. The first air pressure control component 307 consists of at least two parallel branches, each equipped with an air source device, a two-way valve, and a proportional valve. The air source device provides compressed air, the two-way valve controls the on / off state of its branch, and the proportional valve controls the air flow rate of its branch. The first air pressure control component 307 controls the air flow rate of the first ink bottle 308 to control the amount of ink ejected from the array printhead 305, thereby ensuring the accuracy of ink ejection. The flow rate adjustment ranges of the two proportional valves are inconsistent.

[0036] In other examples, the array nozzle 305 is connected to the waste liquid collection assembly 600 via a third conduit. The third conduit includes at least one solenoid valve for controlling the opening and closing of the third conduit. One end of the solenoid valve is connected to the array nozzle 305, and the other end extends into two branches. One branch is connected to the waste liquid collection assembly 600, and the other branch is connected to the first ink bottle 308 for ink recovery, thereby realizing ink recycling.

[0037] As an example, the array printing mechanism 300 also includes a third observation camera 309 and a distance sensor 310; the third observation camera 309 and the distance sensor 310 are mounted on the first mounting plate 301 and arranged side by side with the first observation camera 303; wherein, the third observation camera 309 is used to determine the position of the array printing mechanism 300, and the distance sensor 310 is used to measure the distance between the array printing mechanism 300 and the substrate.

[0038] As an example, the first ink bottle 308 is equipped with a fourth liquid level sensor, a fifth liquid level sensor, and a sixth liquid level sensor, which are used to detect the upper limit, middle limit, and lower limit of the liquid level in the first ink bottle 308, respectively.

[0039] In this embodiment, the housing 304 is detachably connected to the first mounting plate 301, making it suitable for various application scenarios. Furthermore, in a testing environment, the printing effects of different array printheads 305 can be compared, allowing for the selection of the most suitable array printhead 305 in practical applications and reducing testing costs. The first voltage control component 306 can control the ejection state of the array printheads in real time, ensuring ink stability. The first air pressure control component 307 can control the airflow of the first ink bottle 308 to control the amount of ink ejected from the array printheads 305, thereby ensuring ink ejection accuracy. The array printheads 305 are staggered, with adjacent array printheads 305 having overlapping ends, which improves printing efficiency.

[0040] In some embodiments, see Figure 3The single-jet printhead module 401 includes a single-jet printhead 4011, a second air pressure control component 4012, a second voltage control component 4013, and a second ink bottle; wherein, the second voltage control component 4013 is connected to the single-jet printhead 4011 and is used to control the ejection state of the single-jet printhead 4011; the second air pressure control component 4012 is connected to the second ink bottle, and the second ink bottle is connected to the single-jet printhead 4011, and the second air pressure control component 4012 is used to control the flow rate of the second ink bottle, so as to control the amount of ink ejected from the single-jet printhead 4011.

[0041] The single-jet printhead 4011 refers to a single printhead, which can be a dot-jet printhead. Compared to atomizing printheads, dot-jet printheads have a smaller spray range, allowing for precise control of the ink droplet landing point. The second voltage control component 4013 can be controlled by a piezoelectric module or by electro-hydraulic power. Specifically, when voltage control is achieved through electro-hydraulic power, the second voltage control component 4013 includes a power supply and a voltage driver; when voltage control is achieved through a piezoelectric module, the second voltage control component 4013 includes piezoelectric ceramics and a power supply. The first voltage control component can control the spraying state of the single-jet printhead 4011 in real time, ensuring ink stability. The second air pressure control component 4012 includes an air source device, a proportional valve, and a two-way valve; the air source device provides compressed air, the proportional valve controls the air flow rate, and the two-way valve controls the on / off state.

[0042] It should be noted that the angled setting of the single-jet printhead 4011 with the third plane is more conducive to the observation of the repair trajectory of the single-jet printhead by the second observation camera 403 in the defect repair mechanism 400, allowing for adjustment of the repair path of the single-jet printhead 4011. The angled setting of the single-jet printhead 4011 with the third plane allows the second observation camera 403 to be positioned directly above the single-jet printhead 4011, enabling the determination of the print trajectory, i.e., the repair trajectory, of the single-jet printhead 4011 without any calculations. Furthermore, the second observation camera 403 can also observe information such as the volume of ink droplets ejected from the single-jet printhead 4011, whether there is ink accumulation in the nozzle, and the consistency of the nozzle tip, thereby enabling repair measures. For example, based on the ink droplet volume, feedback can be sent to the second air pressure control component 4012 to adjust the appropriate flow rate in real time.

[0043] In this embodiment, the single-jet printhead 4011 employs a dot-jet method, enabling precise control of the ink droplet placement and ensuring the accuracy of defect repair. The second voltage control component 4013 can control the jetting state of the single-jet printhead 4011 in real time, ensuring ink stability. The second air pressure control component 4012 can control the airflow of the second ink bottle, thereby controlling the amount of ink ejected from the single-jet printhead 4011 and ensuring the accuracy of ink ejection.

[0044] In some embodiments, the defect repair mechanism 400 further includes a first curing lamp 4014 and a second adjusting member 4020. One end of the second adjusting member 4020 is fixedly connected to the first curing lamp 4014, and the other end is rotatably connected to the second mounting plate 4015. The first curing lamp 4014 is used to cure the ink ejected by the single-jet nozzle 4011. It can rotate according to the position of the single-jet nozzle 4011 to adjust the position of the first curing lamp 4014, ensuring that the adjusted first curing lamp 4014 is as close to the single-jet nozzle 4011 as possible without directly shining on it. The adjustment strategy of the second adjusting member 4020 (ensuring that the adjusted first curing lamp 4014 is as close to the single-jet nozzle 4011 as possible without directly shining on it) can be implemented manually or intelligently in conjunction with the second observation camera 403.

[0045] In this embodiment, the first curing lamp 4014 is configured to cure the ink ejected by the single-jet nozzle 4011, thus accelerating the repair of substrate defects. By providing the second adjusting member 4020, the first curing lamp 4014 can rotate according to the position of the single-jet nozzle 4011, ensuring that the adjusted first curing lamp 4014 is as close to the single-jet nozzle 4011 as possible without directly shining it on it. Being as close to the single-jet nozzle 4011 maximizes the speed of substrate defect repair, while avoiding direct exposure prevents nozzle clogging. Therefore, the adjustment strategy of the second adjusting member 4020 maximizes the speed of defect repair while ensuring the nozzle does not clog.

[0046] In some examples, the defect repair mechanism 400 includes a second mounting plate 4015 and a first adjustment assembly; the second mounting plate 4015 is fixedly connected to the crossbeam 101, and the single spray nozzle 4011 is connected to the second mounting plate 4015 via the first adjustment assembly; the first adjustment assembly includes a first fixing block 4016, a first adjustment block 4017, a second fixing block 4018, and a second adjustment block 4019; the first fixing block 4016 is fixedly connected to the second mounting plate 4015, and the first adjustment block 4017 is fixedly connected to the first fixing block 4018. The fixed block 4016 is slidably connected, the second fixed block 4018 is fixedly connected to the first adjusting block 4017, the second adjusting block 4019 is slidably connected to the second fixed block 4018, and the second adjusting block 4019 is fixedly connected to the single spray nozzle 4011. The first adjusting block 4017 and the second adjusting block 4019 are angled together, and both are angled to the third plane. The cooperation of the first adjusting block 4017 and the second adjusting block 4019 allows the single spray nozzle 4011 to move along the conveying direction of the substrate. Preferably, the first adjusting block 4017 and the second adjusting block 4019 are at an acute angle, or both are at an acute angle to the third plane. The conveying direction of the substrate includes at least two directions, namely, the two degrees of freedom of the substrate driving mechanism 200.

[0047] In this embodiment, the single nozzle 4011 is angled to the third plane, which creates adjustment space for the first adjustment component. The cooperation of the first adjustment block 4017 and the second adjustment block 4019 enables the single nozzle 4011 to be adjusted arbitrarily in two directions (X-axis and Y-axis).

[0048] See Figure 5 In some embodiments, the inkjet printing system further includes an ink droplet observation mechanism 500, which is disposed on the base 100 and parallel to the first plane. The ink droplet observation mechanism 500 includes an ink droplet observation component 501 and a waste liquid container 502. The ink droplet observation component 501 is used to observe the shape of the ink droplets when the array printhead module 302 prints to the waste liquid container 502, so as to adjust the ink flow rate in the array printhead module 302.

[0049] In some examples, the ink droplet observation assembly 501 includes a fourth observation camera 5011 and a fifth observation camera 5012, which are arranged side-by-side on one side of the substrate driving mechanism 200. The fourth observation camera 5011 is used to observe the cone jet diameter of the ink droplet, and the fifth observation camera 5012 is used to observe the atomization cone angle of the ink droplet. As an example, the ink droplet observation assembly 501 also includes a light source with a reflector, such as a 45-degree reflector. This allows the light source to be positioned perpendicular to the first plane on the substrate, saving space in the ink droplet observation assembly 501 and enabling the fourth and fifth observation cameras 5011 to be closer to the ink droplet, resulting in more accurate observations.

[0050] In this embodiment, the ink droplet observation component 501 can observe the results of the trial printing of the array printing mechanism 300 before printing. Specifically, it observes the cone jet diameter and atomization cone angle of the ink droplets and feeds the observation results back to the array printing mechanism 300. The array printing mechanism 300 can adjust the flow rate of the first ink bottle 308 before printing.

[0051] In some embodiments, the substrate driving mechanism 200 includes a support member 201, a heat insulation member 202, a rotating assembly 203, and a lifting assembly 204. The heat insulation member 202 is disposed between the support member 201 and the rotating assembly 203 and is fixedly connected to the support member 201 and the rotating assembly 203. The support member 201 includes a heating plate 2011 and a ceramic plate 2012, which are stacked. The heating plate 2011 is disposed below the ceramic plate 2012 and is used to heat the ceramic plate 2012, which is used to heat and cure the substrate. The rotating assembly 203 is fixedly connected to the heat insulation member 202 and is used to adjust the angle of the substrate. The lifting assembly 204 is disposed below the support member 201 and is slidably connected to the support member 201, and is used to adjust the height of the substrate.

[0052] In some examples, the substrate driving mechanism 200 also includes a temperature sensor for measuring the temperature of the ceramic plate 2012 in order to precisely adjust the temperature of the ceramic plate 2012 and achieve temperature controllability of substrate heating.

[0053] In this embodiment, the stacked arrangement of the ceramic plate 2012 and the heating plate 2011 ensures uniform heating of the substrate. Furthermore, a temperature sensor is provided to enable controllable heating temperature of the substrate. Adjusting the substrate angle using the rotating assembly 203 and adjusting the substrate height using the lifting assembly 204 allows for the fulfillment of various process requirements.

[0054] See Figure 6 In some embodiments, the inkjet printing system further includes a waste liquid collection assembly 600, which includes a collection tank 601, a first liquid level sensor 602, a waste liquid tank 603, a second liquid level sensor 604, and a leakage detection sensor 605. The collection tank 601 is connected to the array printhead module 302 via a first pipeline and is used to collect the waste liquid discharged by the array printhead module 302. The waste liquid tank 603 is connected to the collection tank 601 via a second pipeline, and the first liquid level sensor... Device 602 is used to measure the liquid level in the collection tank 601. When the liquid level in the collection tank 601 reaches a first threshold, it can control the collection tank 601 to discharge waste liquid into the waste liquid bucket 603. The second liquid level measuring sensor 604 is used to measure the liquid level in the waste liquid bucket 603. When the liquid level in the waste liquid bucket 603 reaches a second threshold, it can display an alarm message to prompt the user to clean the waste liquid bucket 603. The leakage detection sensor 605, which is disposed on the same plane as the waste liquid bucket 603, is used to detect whether waste liquid is leaking. The first threshold is the value corresponding to the upper limit of the liquid level in the collection tank 601; the second threshold is the value corresponding to the upper limit of the liquid level in the waste liquid bucket 603. In some other examples, the inkjet printing system also includes a display panel on which the alarm message can be displayed. In some examples, the waste liquid collection assembly 600 also includes a third liquid level sensor, which is used to detect the lower limit of the liquid level in the waste liquid bucket 603.

[0055] In this embodiment, the waste liquid generated in the array printhead 305 is collected by the waste liquid collection component 600, thereby optimizing the inkjet printing environment.

[0056] See Figure 7 In some embodiments, the inkjet printing system further includes a curing mechanism 700, which includes a column 701, a horizontal column 702, a first drive assembly 703, and a second curing lamp 704. The column 701 is disposed on the base 100, the horizontal column 702 is connected to the column 701 and is disposed parallel to the first plane, and the second curing lamp 704 is fixedly connected to the first drive assembly 703. The first drive assembly 703 is disposed on the horizontal column 702 and can drive the second curing lamp 704 to move along the driving direction of the first drive assembly 703.

[0057] It should be noted that the aforementioned substrate driving mechanism 200 can drive the substrate to the position for curing, that is, the curing position corresponding to the curing mechanism 700. The driving direction of the first driving component 703 is... Figure 1 The Z-axis direction in the equation.

[0058] In the description of this application, it should be understood that, in the accompanying drawings, the positive direction of "X" represents the right, and correspondingly, the negative direction of "X" represents the left; the positive direction of "Y" represents the front, and correspondingly, the negative direction of "Y" represents the rear; the positive direction of "Z" represents the top, and correspondingly, the negative direction of "Z" represents the bottom. The terms "X," "Y," "Z," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0059] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0060] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An inkjet printing system, characterized in that, The inkjet printing system includes: A base (100), on which a crossbeam (101) is provided; A substrate driving mechanism (200) is disposed on the base (100), and the substrate driving mechanism (200) is parallel to the first plane on which the base (100) is located, for driving the substrate to the printing position; An array printing mechanism (300) is disposed on the crossbeam (101). The array printing mechanism (300) includes a first mounting plate (301), an array nozzle module (302), and a first observation camera (303). The array nozzle module (302) is detachably mounted on the first mounting plate (301). The first observation camera (303) is mounted on the first mounting plate (301) and is arranged parallel to the second plane where the crossbeam (101) is located, for observing the printing effect of the substrate. A defect repair mechanism (400) is disposed on the crossbeam (101). The defect repair mechanism (400) includes a single-nozzle module (401), a positioning camera (402), and a second observation camera (403). The positioning camera (402) is used to locate the corresponding defect coordinate position in the printing effect. The single-nozzle module (401) is set at an angle to the third plane and is used to repair the defect coordinate position. The single-nozzle module (401) includes a single-nozzle (4011) and a second air pressure control component. (4012), a second voltage control component (4013), and a second ink bottle; wherein, the second voltage control component (4013) is connected to the single-jet printhead (4011) and is used to control the ejection state of the single-jet printhead (4011); the second air pressure control component (4012) is connected to the second ink bottle, the second ink bottle is connected to the single-jet printhead (4011), and the second air pressure control component (4012) is used to control the flow rate of the second ink bottle to control the amount of ink ejected from the single-jet printhead (4011); The second observation camera (403) is arranged parallel to the third plane and located directly above the single-jet nozzle module (401). It is used to observe the repair trajectory of the single-jet nozzle module (401) to adjust the repair path of the defect repair mechanism (400), and to observe the ink droplet volume information ejected by the single-jet nozzle module (401). Based on the ink droplet volume, it can feed back to the second air pressure control component (4012) to adjust the appropriate flow rate in real time. The first plane, the second plane, and the third plane are perpendicular to each other. The printing position refers to the position corresponding to the array printing mechanism (300) or the position corresponding to the defect repair mechanism (400).

2. The inkjet printing system as described in claim 1, characterized in that, The array printhead module (302) includes a housing (304), an array printhead (305), a first voltage control component (306), a first air pressure control component (307), and a first ink bottle (308). The housing (304) is detachably connected to the first mounting plate (301). The first air pressure control component (307) is connected to the first ink bottle (308), and the first ink bottle (308) is connected to the array printhead (305). The first air pressure control component (307) can control the flow rate of the first ink bottle (308) to control the amount of ink ejected from the array printhead (305). The first voltage control component (306) is connected to the array printhead (305) and is used to control the ejection state of the array printhead (305). The number of array nozzles (305) can be one or more; when the number of array nozzles (305) is multiple, the array nozzles (305) are staggered in the length direction of the crossbeam (101) and the ends of adjacent array nozzles (305) overlap.

3. The inkjet printing system as described in claim 1, characterized in that, The defect repair mechanism (400) includes a second mounting plate (4015) and a first adjustment assembly; the second mounting plate (4015) is fixedly connected to the crossbeam (101), and the single spray nozzle (4011) is connected to the second mounting plate (4015) through the first adjustment assembly; the first adjustment assembly includes a first fixing block (4016), a first adjustment block (4017), a second fixing block (4018), and a second adjustment block (4019); the first fixing block (4016) is fixedly connected to the second mounting plate (4015), and the first adjustment block (4017) is fixedly connected to the first fixing block (4019). 4016) Sliding connection, the second fixing block (4018) is fixedly connected to the first adjusting block (4017), the second adjusting block (4019) is slidably connected to the second fixing block (4018), and the second adjusting block (4019) is fixedly connected to the single spray nozzle (4011); wherein, the first adjusting block (4017) and the second adjusting block (4019) are set at an angle, and both are set at an angle to the third plane, and the single spray nozzle (4011) can move along the conveying direction of the substrate through the cooperation of the first adjusting block (4017) and the second adjusting block (4019).

4. The inkjet printing system as described in claim 3, characterized in that, The defect repair mechanism (400) further includes a first curing lamp (4014) and a second adjusting member (4020). One end of the second adjusting member (4020) is fixedly connected to the first curing lamp (4014), and the other end is rotatably connected to the second mounting plate (4015). The first curing lamp (4014) is used to cure the ink sprayed by the single-jet nozzle (4011). It can be rotated according to the position of the single-jet nozzle (4011) to adjust the position of the first curing lamp (4014) and ensure that the adjusted first curing lamp (4014) is as close to the single-jet nozzle (4011) as possible without directly shining on it.

5. The inkjet printing system as described in claim 1, characterized in that, The inkjet printing system further includes an ink droplet observation mechanism (500), which is disposed on the base (100) and parallel to the first plane. The ink droplet observation mechanism (500) includes an ink droplet observation component (501) and a waste liquid container (502). The ink droplet observation component (501) is used to observe the shape of the ink droplets when the array printhead module (302) prints to the waste liquid container (502) in order to adjust the flow rate of ink in the array printhead module (302).

6. The inkjet printing system as described in claim 5, characterized in that, The ink droplet observation assembly (501) includes a fourth observation camera (5011) and a fifth observation camera (5012), which are arranged side by side on one side of the substrate driving mechanism (200); wherein, the fourth observation camera (5011) is used to observe the cone jet diameter of the ink droplet, and the fifth observation camera (5012) is used to observe the atomization cone angle of the ink droplet.

7. The inkjet printing system as described in claim 1, characterized in that, The substrate driving mechanism (200) includes a support member (201), a heat insulation member (202), a rotating assembly (203), and a lifting assembly (204). The heat insulation member (202) is disposed between the support member (201) and the rotating assembly (203) and is fixedly connected to the support member (201) and the rotating assembly (203). The support member (201) includes a heating plate (2011) and a ceramic plate (2012). The substrate is arranged in a stacked configuration; wherein, the heating plate (2011) is disposed below the ceramic plate (2012) for heating the ceramic plate (2012), and the ceramic plate (2012) is used for heating and curing the substrate; the rotating assembly (203) is fixedly connected to the heat insulation member (202) for adjusting the angle of the substrate; the lifting assembly (204) is disposed below the support member (201) and slidably connected to the support member (201) for adjusting the height of the substrate.

8. The inkjet printing system as described in claim 1, characterized in that, The inkjet printing system further includes a waste liquid collection assembly (600), which includes a collection tank (601), a first liquid level sensor (602), a waste liquid tank (603), a second liquid level sensor (604), and a leakage detection sensor (605). The collection tank (601) is connected to the array printhead module (302) via a first pipeline and is used to collect the waste liquid discharged by the array printhead module (302). The waste liquid tank (603) is connected to the collection tank (601) via a second pipeline, and the first liquid level sensor (604) is connected to the collection tank (605). 02) Used to measure the liquid level in the collection tank (601), and when the liquid level in the collection tank (601) reaches the first threshold, it can control the collection tank (601) to discharge waste liquid into the waste liquid bucket (603); the second liquid level measuring sensor (604) is used to measure the liquid level in the waste liquid bucket (603), and when the liquid level in the waste liquid bucket (603) reaches the second threshold, it can display an alarm message to prompt the object to clean the waste liquid bucket (603); the leakage detection sensor (605) is set on the same plane as the waste liquid bucket (603) and is used to detect whether the waste liquid is leaking.

9. The inkjet printing system as described in claim 1, characterized in that, The inkjet printing system further includes a curing mechanism (700), which includes a column (701), a horizontal column (702), a first drive assembly (703), and a second curing lamp (704). The column (701) is disposed on the base (100), the horizontal column (702) is connected to the column (701), the horizontal column (702) is disposed parallel to the first plane, and the second curing lamp (704) is fixedly connected to the first drive assembly (703). The first drive assembly (703) is disposed on the horizontal column (702) and can drive the second curing lamp (704) to move along the driving direction of the first drive assembly (703).

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