Printing equipment for large-size glass substrate and use method of printing equipment

Abstract

The invention relates to the field of display panel production, in particular to printing equipment for a large-size glass substrate and a use method of the printing equipment, and the printing equipment comprises a sealing cavity, an air floating platform, an alignment device, a printing device, a moving device, an ink pressing device, a wiping device, a spray inspection device and a calibration device; wherein the alignment device is used for carrying out coarse positioning and fine positioning on a glass substrate so as to capture a Mack mark of the glass substrate; the ink pressing device is used for pressing ink on the spray head after printing is completed; the wiping device is used for wiping and detecting the nozzle; the spraying detection device is used for detecting the spraying hole state of the spraying head; and the calibration device is used for correcting the position of the spray head, so that printing of a large-size glass substrate can be met, and an efficient and accurate printing effect can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of display panel production, and in particular to a printing device for a large-size glass substrate and a method of using the same. Background Art

[0002] With the advancement of technology and the increase in market demand, large-size glass substrates are increasingly used in applications such as flat panel displays, architectural decoration, etc. However, how to efficiently and accurately print patterns on large-size glass substrates has always been a technical challenge. Summary of the invention

[0003] The object of the present invention is to provide a large-size glass substrate printing device, which is intended to be able to print on a large-size glass substrate and achieve efficient and accurate printing effects.

[0004] Another object of the present invention is to provide a method for using a large-size glass substrate printing device, aiming to enable printing on a large-size glass substrate and to achieve efficient and accurate printing effects.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A printing device for a large-size glass substrate includes a sealed cavity and further includes:

[0007] An air flotation platform is disposed in the sealed cavity, wherein the upstream and downstream of the air flotation platform are non-printing areas respectively, and the midstream is a printing area;

[0008] An alignment device, when the glass substrate is transferred to the printing area, the alignment device is used to roughly and precisely position the glass substrate to capture the Mack mark of the glass substrate;

[0009] A printing device is disposed in the sealed cavity, wherein the printing device includes a multi-nozzle PACK group integrated with a plurality of nozzles, and is used for printing a pattern on a glass substrate;

[0010] A moving device, disposed in the sealed cavity, connected to the printing device and used for moving the printing device;

[0011] An ink pressing device is arranged in the sealed cavity. When the moving device drives the printing device to move directly above the ink pressing device, the ink pressing device is used to press ink on the nozzle after printing is completed.

[0012] A wiping device, disposed in the sealed cavity, for wiping and detecting the nozzle;

[0013] A spray inspection device, disposed in the sealed cavity, for detecting the state of the spray hole of the spray head;

[0014] A calibration device is arranged in the sealed cavity and is used to calibrate the position of the nozzle.

[0015] Furthermore, the alignment device comprises:

[0016] A support column assembly, used for supporting a glass substrate;

[0017] A sensor assembly for sensing a position of a glass substrate;

[0018] A lifting roller assembly, when the glass substrate is in place, the lifting roller assembly rises to lift the glass substrate;

[0019] A baffle assembly, when the glass substrate is lifted, the baffle assembly is used to push the glass substrate for alignment;

[0020] The clamp is used to fix the glass substrate after the glass substrate is aligned.

[0021] Furthermore, the printing device comprises:

[0022] A printing carriage, on which a plurality of the multi-nozzle PACK groups are arranged, for printing patterns on a glass substrate;

[0023] A control system, wherein the printing carriage is electrically connected to the control system, and the control system is used to control the movement and printing operation of the printing carriage.

[0024] Furthermore, the ink pressing device comprises:

[0025] An ink pressing assembly, used for applying pressure to the nozzle to press ink;

[0026] A waste ink barrel, used for collecting excess ink discharged from the nozzle when the ink pressing assembly presses ink;

[0027] An ink pressing support frame, wherein an adjustment plate is arranged on the top of the ink pressing support frame, the ink pressing assembly is arranged on the adjustment plate, and the waste ink barrel is arranged inside the ink pressing support frame;

[0028] A correction bolt group, wherein the four corners of the adjustment plate are respectively connected to the ink pressing support frame bolts through the correction bolt group, and the correction bolt group is used to adjust the level of the ink pressing assembly.

[0029] Furthermore, the wiping device comprises:

[0030] A wiping component, used for wiping the nozzle;

[0031] Wiping paper changing mechanism, used for changing the wiping paper;

[0032] The detection component is used to detect whether the nozzle is wiped clean.

[0033] Furthermore, the spray inspection device comprises:

[0034] Spray inspection film replacement mechanism, used to replace the spray inspection film;

[0035] The spray inspection component is used to detect whether the spray hole of the spray head is blocked.

[0036] Furthermore, the calibration device adopts an ink droplet observation instrument.

[0037] Further, the ink pressing assembly includes an ink pressing cartridge, and the ink pressing cartridge is used to store ink pressing material;

[0038] Wherein, a conical surface structure is arranged inside the ink cartridge to facilitate the discharge of waste ink, and the outlet end at the bottom of the conical surface structure is connected to the waste ink barrel.

[0039] Furthermore, the ink pressing assembly is provided in plurality, and the ink pressing assembly is provided in one-to-one correspondence with the multi-nozzle PACK group.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] In the present application, after the large-sized glass substrate is transferred to the printing area of ​​the air flotation platform, the glass substrate is precisely positioned by the alignment device, and then the printing device prints on the glass substrate. The glass substrate is fed once, and the printing device prints once until the printing is completed. After the printing is completed, in order to ensure the quality of the ink, the printing device is moved to the top of the ink pressing device by the moving device to perform the ink pressing operation. The ink pressing device can apply pressure to multiple nozzles to discharge excess ink, and then the nozzle is cleaned and wiped by the wiping device to prevent the ink at the nozzle from drying up and clogging the nozzle. Then the nozzle inspection device is used to detect whether the nozzle hole of the nozzle is blocked. Finally, the position of the nozzle is adjusted in combination with the calibration device to ensure that each printing can achieve the ideal effect and realize accurate and efficient printing of large-sized glass substrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 is an axonometric view of the printing device of the present invention;

[0044] Figure 2 It is a structural schematic diagram of the air flotation platform of the present invention;

[0045] Figure 3 It is a structural schematic diagram of the alignment device of the present invention;

[0046] Figure 4 is a top view of the deviation adjustment device of the present invention;

[0047] Figure 5 A top view of the deviation adjustment assembly of the present invention;

[0048] Figure 6 It is a structural schematic diagram of the ink pressing device of the present invention;

[0049] Figure 7 It is a schematic structural diagram of the wiping device of the present invention;

[0050] Figure 8 It is a schematic diagram of the structure of the wiping assembly of the present invention;

[0051] Fig. 9 It is a structural schematic diagram of the wiping paper changing mechanism of the present invention;

[0052] Fig.10 It is a structural schematic diagram of the spray inspection device of the present invention;

[0053] Fig.11 It is a structural schematic diagram of the spray inspection assembly of the present invention;

[0054] Fig.12 It is a structural schematic diagram of the spray inspection and material replacement mechanism of the present invention;

[0055] Fig.13 It is a structural schematic diagram of the ink droplet observation instrument of the present invention docking with a multi-nozzle PACK group.

[0056] In the figure:

[0057] 100-sealed cavity; 200-alignment device; 300-deflection adjustment device; 400-air floating platform; 500-printing device; 600-ink pressing device; 700-wiping device; 800-spray inspection device; 900-calibration device;

[0058] 201-lifting roller assembly; 202-glass sensor; 203-baffle assembly; 204-edge sensor; 205-support column assembly; 206-clamp;

[0059] 301-deflection adjustment assembly; 3011-cross roller guide rail; 302-mounting base plate; 303-intermediate rotating assembly; 304-magnetic grid assembly; 305-guide rail mounting plate;

[0060] 410-non-printing area; 420-printing area;

[0061] 501-multi-nozzle PACK group; 502-nozzle;

[0062] 601-ink pressing assembly; 602-waste ink barrel; 603-ink pressing support frame; 604-correction bolt group; 605-ink pressing cartridge; 606-adjustment plate;

[0063] 701-wiping strip assembly; 702-first cylinder; 703-wiping sensor assembly; 704-wiping moving assembly; 705-buffer assembly; 706-wiping fixed assembly; 707-detection assembly;

[0064] 801- material shaft detection component; 802- second cylinder; 803- spray inspection moving component; 804- film support rod; 805- spray inspection locking component; 806- spray inspection observation component; 807- spray inspection fixing component; 808- line scan camera component;

[0065] 901-ink tray assembly; 902-lifting assembly; 903-camera assembly. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0069] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0070] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0071] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0073] Example 1

[0074] Reference Figure 1-Figure 13 This embodiment provides a printing device for a large-size glass substrate, including a sealed cavity 100, and further comprising:

[0075] The air floating platform 400 is disposed in the sealed cavity 100, wherein the upstream and downstream of the air floating platform 400 are respectively a non-printing area 410, and the midstream is a printing area 420;

[0076] The alignment device 200 is used for roughly positioning and precisely positioning the glass substrate to capture the Mack mark of the glass substrate after the glass substrate is transferred to the printing area 420;

[0077] A deflection adjustment device 300, which is used to adjust the flatness and parallelism of the glass substrate after the alignment of the glass substrate is completed;

[0078] A printing device 500 is disposed in the sealed cavity 100, and the printing device 500 includes a multi-nozzle PACK group 501 integrated with a plurality of nozzles 502, and is used for printing patterns on a glass substrate;

[0079] A moving device is disposed in the sealed cavity 100, and is connected to the printing device 500, and is used to move the printing device 500; the moving device includes an x-axis linear module, a y-axis linear module, and a z-axis linear module connected to each other, thereby driving the printing device 500 to move; it should be noted that the structure of the moving device belongs to the prior art and will not be described in detail;

[0080] The ink pressing device 600 is disposed in the sealed cavity 100. When the moving device drives the printing device 500 to move directly above the ink pressing device 600, the ink pressing device 600 is used to press ink on the nozzle 502 after printing is completed.

[0081] A wiping device 700 is disposed in the sealed cavity 100 and is used to wipe and detect the nozzle 502;

[0082] A spray inspection device 800 is disposed in the sealed cavity 100 and is used to detect the spray hole status of the spray head 502;

[0083] The calibration device 900 is disposed in the sealed cavity 100 and is used to calibrate the position of the nozzle 502 .

[0084] Specifically, the air floating platform 400 is a special support platform, and its working principle is mainly to generate an air flow at the bottom of the platform to form an air film, so that the platform can float at a certain height. This design can significantly reduce or eliminate physical contact and friction, and is suitable for supporting large-sized glass substrates to achieve high-precision positioning and reduce vibration interference.

[0085] Combination Figure 2-Figure 3 , the alignment device 200 comprises:

[0086] The support column assembly 205 includes a plurality of support columns (or pin columns) that can be raised and lowered, and is used to support the glass substrate;

[0087] A sensor assembly for sensing a position of a glass substrate;

[0088] The lifting roller assembly 201 (Roller assembly) includes a plurality of rollers that can be lifted and lowered. When the glass substrate is in place, the plurality of rollers of the lifting roller assembly 201 rise to lift the glass substrate. Preferably, the lifting roller assembly 201 includes three rollers that can be lifted and lowered.

[0089] A baffle assembly 203 (Banker assembly), which is used to push the glass substrate to align when the glass substrate is lifted;

[0090] The clamp 206 is used to fix the glass substrate after the glass substrate is aligned.

[0091] The deviation adjustment device 300 includes a mounting base 302, an intermediate rotating component 303, an deviation adjustment component 301, a magnetic grid component 304, and a guide rail mounting plate 305. The intermediate rotating component 303 is located in the middle of the mounting base 302 as an intermediate rotating axis. The deviation adjustment components 301 are respectively arranged on both sides of the intermediate rotating component 303, and the magnetic grid components 304 are respectively arranged at both ends of the mounting base 302. The deviation adjustment component 301 includes a cross roller guide rail 3011. The deviation adjustment device 300 uses the cross roller track to tilt at a certain angle to help rotate the glass substrate to adjust the flatness and parallelism of the glass substrate.

[0092] The alignment device 200 is used in combination with the deviation adjustment device 300 to achieve accurate positioning of the glass substrate, including the following steps:

[0093] 1. Preliminary placement and sensing: First, the glass substrate is transported to the printing area 420 inside the printing device, where it falls on some small support pillars. At this time, the sensor assembly is used to confirm whether the glass substrate has arrived correctly. The sensor assembly includes two sensors, namely the edge sensor 204 (Edge sensor) and the glass sensor 202 (Glass sensor).

[0094] 2. Rough positioning: Next, three rollers will rise to gently lift the glass substrate, while the support column will descend, and then the baffle assembly 203 will push the glass substrate to move to the correct position. When the edge sensor 204 confirms the position of the glass again, it will go out, indicating that this step is completed. Finally, a clamp 206 uses vacuum to absorb the glass substrate. Then the lifting roller assembly 201 descends and the baffle assembly 203 returns to its position.

[0095] 3. Fine adjustment: In order to make the pattern printed on the glass substrate more accurately, some fine adjustments are required. A special track (cross roller guide 3011) is used here. The deflection adjustment device 300 can use the cross roller track to tilt at an angle of 3° to help rotate the glass substrate. If clockwise rotation is required, the two sets of deflection adjustment devices 300 move to the right together; otherwise, they move to the left. This ensures that the glass substrate is completely flat and parallel to the printing direction, ready for subsequent printing. After the mechanical alignment is completed, the camera can accurately capture the Mark after coarse positioning and fine positioning.

[0096] The mechanical alignment device 200 is used to ensure that the coarse positioning and fine positioning cameras accurately capture the Mark mark, and the deviation adjustment device 300 is used to ensure the flatness and parallelism of the glass substrate to achieve precise printing.

[0097] The printing device 500 comprises:

[0098] A printing carriage, on which a plurality of the multi-nozzle PACK groups 501 are arranged, is used to print patterns on a glass substrate; the printing carriage is also called an inkjet printing carriage, and its structure belongs to the prior art and will not be described in detail here;

[0099] A control system, wherein the printing carriage is electrically connected to the control system, and the control system is used to control the movement and printing operation of the printing carriage.

[0100] The ink pressing device 600 comprises:

[0101] The ink pressing assembly 601 is used to apply pressure to the nozzle 502 to press ink; the ink pressing assembly 601 and the multi-nozzle PACK group 501 are respectively provided in eight pieces and are arranged one by one; the ink pressing unit is modularly designed, and the ink pressing strip on the ink pressing unit is made of soft material and is provided with threads;

[0102] A waste ink barrel 602 is used to collect excess ink discharged from the nozzle 502 when the ink pressing assembly 601 presses ink;

[0103] An ink pressing support frame 603, wherein an adjustment plate 606 is disposed on the top of the ink pressing support frame 603, the ink pressing assembly 601 is disposed on the adjustment plate 606, and the waste ink barrel 602 is disposed in the ink pressing support frame 603;

[0104] A correction bolt group 604, wherein the four corners of the adjustment plate 606 are respectively connected to the ink pressing support frame 603 by bolts through the correction bolt group 604, and the correction bolt group 604 is used to adjust the level of the ink pressing assembly 601;

[0105] The ink pressing cartridge 605 is used to store ink pressing materials; the ink pressing cartridge 605 is provided with a conical structure for facilitating the discharge of waste ink, and the outlet end at the bottom of the conical structure is connected to the waste ink barrel 602 to facilitate the discharge of waste ink into the waste ink barrel 602.

[0106] After the glass substrate is transferred to the printing area 420, the printing carriage prints on the glass substrate. The glass substrate is fed once, and the carriage prints once until the printing is completed.

[0107] After printing is completed, the printing carriage is moved to the top of the ink pressing component 601 by the moving device to press the ink, and the nozzle 502 is cleaned and wiped by the wiping device 700, once every 100 pieces of printing. Then, the nozzle 502 nozzle hole is checked for blockage by the nozzle inspection device 800, once a day. Finally, the position of the nozzle 502 is corrected by the calibration device 900.

[0108] The ink pressing process is as follows:

[0109] When the printing carriage moves to the top of the ink pressing assembly 601, the eight ink pressing assemblies 601 respectively correspond to the eight multi-nozzle PACK groups 501 to press ink, and apply pressure to the nozzles 502 to discharge excess ink and collect it in the waste ink barrel 602. These ink pressing units adopt a modular design, which can not only effectively remove ink through the ink pressing strips made of soft materials, but also adjust their own levels through the correction bolt group 604 to ensure that each nozzle 502 can be evenly treated. In a word, sufficient ink pressing is achieved through the design of the ink pressing device 600.

[0110] The wiping device 700 comprises:

[0111] A wiping component, used for wiping the nozzle 502;

[0112] Wiping paper changing mechanism, used for changing the wiping paper;

[0113] The detection component 707 is used to detect whether the nozzle 502 is wiped clean.

[0114] Specifically, the wiping assembly includes a wiping strip assembly 701, and the detection assembly 707 uses a camera. During wiping, the moving device moves the multi-nozzle PACK group 501 from one side of the wiping strip assembly 701 to the other side to complete the wiping. Then, the multi-nozzle PACK group 501 is moved to the top of the detection assembly 707 to detect whether the nozzle 502 is wiped clean.

[0115] The wiping paper changing mechanism includes a first cylinder 702, a wiping fixed component 706, a wiping sensor component 703, a wiping moving component 704, and a buffer component 705; the first cylinder 702 is arranged on the wiping fixed component 706, and the wiping process is as follows:

[0116] When the wiping paper is out of material, the wiping sensor assembly 703 will trigger the sensor prompt alarm, and the first cylinder 702 will drive the wiping moving assembly 704 to move to the A end of the first cylinder 702 to change the material. After the material is changed, the first cylinder 702 is pushed to its B end, and the wiping moving assembly 704 is contacted and fixed with the buffer assembly 705 to prevent shaking, thereby completing the material change.

[0117] The multi-nozzle PACK group 501 moves from one side of the wiping strip assembly 701 to the other side to complete wiping, and then moves to the top of the detection assembly 707. The detection assembly 707 uses a detection camera to detect whether the nozzle 502 is wiped clean.

[0118] In order to prevent the ink from drying up and clogging the nozzle 502, the printing device is equipped with an automatic wiping device 700, which is driven by a dual motor (see Figure 8 and Fig. 9 ) can replace new wiping paper as needed, and keep the paper tight during the whole process to ensure that each wipe can completely remove the residue. In addition, there is a detection link, using a detection camera to check whether the nozzle 502 is clean to ensure the best printing effect. The wiping device 700 has a buffer area through the buffer component 705 to protect the print head, and generally realizes the complete cleaning and detection of the multi-nozzle PACK group 501.

[0119] The spray inspection device 800 includes:

[0120] Spray inspection film replacement mechanism, used to replace the spray inspection film;

[0121] The spray inspection component is used to detect whether the spray hole of the spray head 502 is blocked.

[0122] Specifically, Figure 10-12 The spray inspection film material changing mechanism includes a material shaft detection component 801, a second cylinder 802, a spray inspection moving component 803, a spray inspection fixing component 807, a film support rod 804, and a spray inspection locking component 805; the spray inspection component includes a spray inspection observation component 806 and a line scan camera component 808; the spray inspection film material changing process is as follows: when the spray inspection film is short of material, the material shaft detection component 801 will prompt an alarm, and the second cylinder 802 drives the spray inspection moving component 803 to move to the A end of the second cylinder 802 for material changing. At this time, the film support rod 804 supports the spray inspection film. After the material is changed, the second cylinder 802 is pushed to its B end, and the film support rod 804 is separated from the spray inspection film. The spray inspection locking component 805 and the spray inspection observation component 806 are locked and the material change is completed. When a single nozzle 502 is placed directly above the spray inspection observation window, the line scan camera component 808 moves to take pictures, outputs the effect picture, and judges whether the nozzle 502 is blocked according to whether there are ink dots on the effect picture.

[0123] The calibration device 900 uses an ink droplet observer, which includes an ink tray assembly 901, a lifting assembly 902, and a camera assembly 903; the ink tray assembly 901 is used to dock with the multi-nozzle PACK group 501, and the lifting assembly 902 is connected to the camera assembly 903 to adjust the height of the camera assembly 903. When the multi-nozzle PACK group 501 moves to the top of the ink tray assembly 901, the lifting assembly 902 drives the camera assembly 903 to take pictures of the nozzles 502 at different positions in the multi-nozzle PACK group 501 respectively. The camera assembly 903 uses the up and down movement of the camera to detect, which can be used to correct the position of the nozzle 502. At the same time, combined with image analysis, it can measure the ink droplet ejection speed, angle, volume of the nozzle 502, and correct the position of the nozzle 502, which can solve the problem of the nozzle 502 deviating during use.

[0124] Example 2

[0125] The method for using the printing device for a large-size glass substrate comprises the following steps:

[0126] After the large-sized glass substrate is transferred to the printing area 420 of the air floating platform 400, the glass substrate is precisely positioned by the alignment device 200 and the deviation adjustment device 300;

[0127] The printing device 500 prints on the glass substrate. The glass substrate is fed once, and the printing device 500 prints once, until the printing is completed.

[0128] After printing is completed, the printing device 500 is moved by the moving device to the top of the ink pressing device 600 to perform an ink pressing operation, and the ink pressing device 600 applies pressure to the plurality of nozzles 502 to discharge excess ink;

[0129] The multi-nozzle PACK group 501 is moved to the wiping device 700 by the moving device. The wiping device 700 cleans and wipes the nozzle 502 to prevent the ink at the nozzle 502 from drying up and clogging the nozzle 502, and detects whether the nozzle 502 is wiped clean.

[0130] Detecting whether the spray hole of the spray head 502 is blocked by the spray inspection device 800;

[0131] Finally, the position of the nozzle 502 is adjusted in combination with the calibration device 900 to ensure that the ideal printing effect can be achieved each time, thereby realizing accurate and efficient printing on large-size glass substrates.

[0132] The beneficial effects of the technical solution of the present invention are:

[0133] In the present application, after the large-sized glass substrate is transferred to the printing area 420 of the air flotation platform 400, the glass substrate is precisely positioned by the alignment device 200 and the deviation adjustment device 300, and then the printing device 500 prints on the glass substrate. The glass substrate is fed once, and the printing device 500 prints once until the printing is completed. After the printing is completed, in order to ensure the quality of the ink, the printing device 500 is moved to the top of the ink pressing device 600 by the moving device to perform the ink pressing operation. The ink pressing device 600 can apply pressure to multiple nozzles 502 to discharge excess ink, and then the nozzle 502 is cleaned and wiped by the wiping device 700 to prevent the ink at the nozzle 502 from drying up and clogging the nozzle 502, and then the nozzle 502 is detected by the spray inspection device 800 Whether the nozzle hole of the nozzle 502 is blocked, and finally the position of the nozzle 502 is adjusted in combination with the calibration device 900, so as to ensure that each printing can achieve the ideal effect, and realize accurate and efficient printing of large-sized glass substrates.

[0134] The present invention overcomes the limitations of the prior art by introducing an advanced mechanical alignment device 200, an efficient ink pressing device 600, an intelligent nozzle 502 wiping device 700 and a reliable spray inspection device 800, thereby ensuring the quality and stability of printing on large-size glass substrates.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0136] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A printing device for a large-size glass substrate, comprising a sealed cavity (100), characterized in that: Also includes: An air floating platform (400) is arranged in the sealed cavity (100), wherein the upstream and downstream of the air floating platform (400) are respectively non-printing areas (410), and the midstream is a printing area (420); A positioning device (200), when the glass substrate is transferred to the printing area (420), the positioning device (200) is used to roughly position and precisely position the glass substrate to capture the Mack mark of the glass substrate; A printing device (500) is arranged in the sealed cavity (100), wherein the printing device (500) comprises a multi-nozzle PACK group (501) integrated with a plurality of nozzles (502) and is used for printing a pattern on a glass substrate; A moving device, disposed in the sealed cavity (100), the moving device being connected to the printing device (500) and used for moving the printing device (500); An ink pressing device (600) is arranged in the sealed cavity (100), and when the moving device drives the printing device (500) to move directly above the ink pressing device (600), the ink pressing device (600) is used to press ink on the nozzle (502) after printing is completed; A wiping device (700) is disposed in the sealed cavity (100) and is used to wipe and detect the nozzle (502); A spray inspection device (800), disposed in the sealed cavity (100), and used to detect the spray hole status of the spray head (502); A calibration device (900) is disposed in the sealed cavity (100) and is used to calibrate the position of the nozzle (502).

2. The printing device for a large-size glass substrate according to claim 1, characterized in that: The alignment device (200) comprises: A support column assembly (205) for supporting a glass substrate; A sensor assembly for sensing a position of a glass substrate; A lifting roller assembly (201), when the glass substrate is in place, the lifting roller assembly (201) rises to lift the glass substrate; A baffle assembly (203), when the glass substrate is lifted, the baffle assembly (203) is used to push the glass substrate to align; The clamp (206) is used to fix the glass substrate after the glass substrate is aligned.

3. The printing device for a large-size glass substrate according to claim 1, characterized in that: The printing device (500) comprises: A printing carriage, on which a plurality of the multi-nozzle PACK groups (501) are arranged for printing patterns on a glass substrate; A control system, wherein the printing carriage is electrically connected to the control system, and the control system is used to control the movement and printing operation of the printing carriage.

4. The printing device for a large-size glass substrate according to claim 1, characterized in that: The ink pressing device (600) comprises: An ink pressing component (601), used for applying pressure to the nozzle (502) to press ink; A waste ink barrel (602) for collecting excess ink discharged from the nozzle (502) when the ink pressing assembly (601) presses ink; An ink pressing support frame (603), wherein an adjustment plate (606) is arranged on the top of the ink pressing support frame (603), the ink pressing assembly (601) is arranged on the adjustment plate (606), and the waste ink barrel (602) is arranged in the ink pressing support frame (603); A correction bolt group (604), wherein the four corners of the adjustment plate (606) are respectively connected to the ink pressure support frame (603) by bolts through the correction bolt group (604), and the correction bolt group (604) is used to adjust the level of the ink pressure assembly (601).

5. The printing device for a large-size glass substrate according to claim 1, characterized in that: The wiping device (700) comprises: A wiping assembly, used for wiping the spray head (502); Wiping paper changing mechanism, used for changing the wiping paper; The detection component (707) is used to detect whether the nozzle (502) is wiped clean.

6. The printing device for a large-size glass substrate according to claim 1, characterized in that: The spray inspection device (800) comprises: Spray inspection film replacement mechanism, used to replace the spray inspection film; The spray inspection component is used to detect whether the spray hole of the spray head (502) is blocked.

7. The printing device for a large-size glass substrate according to claim 1, characterized in that: The calibration device (900) adopts an ink droplet observation instrument.

8. The printing device for a large-size glass substrate according to claim 4, characterized in that: The ink pressing assembly (601) comprises an ink pressing cartridge (605), and the ink pressing cartridge (605) is used to store ink pressing material; The ink cartridge (605) is internally provided with a conical structure for facilitating the discharge of waste ink, and the outlet end at the bottom of the conical structure is connected to the waste ink barrel (602).

9. The printing device for a large-size glass substrate according to claim 4, characterized in that: The ink pressing components (601) are arranged in plurality, and the ink pressing components (601) are arranged in a one-to-one correspondence with the multi-nozzle PACK group (501).

10. A method for using a printing device for a large-size glass substrate according to any one of claims 1 to 9, characterized in that: The following steps are involved: After the large-sized glass substrate is transferred to the printing area (420) of the air floating platform (400), the glass substrate is accurately positioned by the alignment device (200); The printing device (500) performs printing on the glass substrate, and each time the glass substrate is fed, the printing device (500) prints once, until printing is completed; After printing is completed, the printing device (500) is moved by the moving device to the top of the ink pressing device (600) to perform an ink pressing operation, and the ink pressing device (600) applies pressure to the plurality of nozzles (502) to discharge excess ink; The multi-nozzle PACK group (501) is moved to the wiping device (700) by the moving device, and the wiping device (700) cleans and wipes the nozzle (502) to prevent the ink at the nozzle (502) from drying up and clogging the nozzle (502), and detects whether the nozzle (502) is wiped clean; Detecting whether the spray hole of the spray head (502) is clogged by the spray inspection device (800); Finally, the position of the nozzle (502) is adjusted in combination with the calibration device (900) to achieve accurate and efficient printing on a large-sized glass substrate.

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