IJP spraying equipment suitable for large-size panels and its use method

Abstract

The present invention discloses an IJP spraying device suitable for large-size panels and a method of using the same. The device comprises a gantry, a square bracket, a PLC controller, a jig transfer assembly, a cleaning assembly, a detection assembly, a nozzle transfer assembly, and a curing assembly; the PLC controller serves as a control core for connecting various components; the jig transfer assembly comprises a rotating table and a jig assembly, and the jig assembly is mounted on the rotating table; the curing assembly is slidably mounted on the square bracket, and other components are mounted on the gantry; the cleaning assembly comprises a cleaning nozzle and a cleaning nozzle, and the detection assembly comprises a detection camera; the nozzle transfer assembly is provided with two groups, and the nozzle transfer assembly comprises an inkjet nozzle, a positioning camera, and a pre-curing lamp, and the pre-curing lamp is mounted on the outside of the inkjet nozzle; the curing assembly comprises a curing lamp, and the length of the curing lamp is greater than that of the jig assembly. The present invention has high printing accuracy and printing efficiency, and can pre-curing while printing to prevent ink diffusion in areas that were printed earlier.

Description

Technical Field

[0001] The present invention belongs to the technical field of OLED spraying, and in particular relates to an IJP spraying device suitable for large-size panels and a method for using the same. Background Art

[0002] With the development of the modern information revolution, information processing and data analysis have had a profound impact on every aspect of our lives. Large-scale display technology plays a crucial role in analyzing and processing massive amounts of data. Currently, OLED displays have become one of the mainstream display technologies. However, due to limitations in the vapor deposition process, while widely used in small smartphones and other applications, they are expensive for large-scale displays and difficult to produce three primary colors of OLED. Therefore, the current vapor deposition process is not suitable for the manufacture of large-scale panels. Inkjet printing, on the other hand, offers unique advantages in large-scale panel manufacturing, making it a better choice for the production of OLED substrates.

[0003] Although large-size panels only require inkjet printing on four sides, traditional inkjet printing equipment for large-size panels still has the following disadvantages:

[0004] 1. Since the panel size is much larger than that of ordinary panels, the equipment running distance is longer, so the equipment accuracy requirements are higher. Under the same accuracy conditions, a longer running distance will produce greater errors and lower printing accuracy;

[0005] 2. The requirements for operating efficiency have also increased. Under the same printing conditions, larger products require more printing time, resulting in lower production efficiency.

[0006] 3. If the size of ordinary inkjet spraying equipment is blindly increased, the accuracy and efficiency will not be able to meet the printing requirements; and because the panel size is large, the printing time is long. After printing a panel, the ink in the earlier printed areas will spread due to failure to solidify in time. Summary of the Invention

[0007] The purpose of the present invention is to provide an IJP spraying device suitable for large-size panels and a method for using the same, which has high printing accuracy and printing efficiency, can pre-curing while printing, and prevent ink diffusion in areas printed earlier.

[0008] To achieve the above objectives, the present invention provides a solution: an IJP spraying device suitable for large-size panels, comprising a frame, a gantry, a square bracket, a PLC controller, a jig transfer assembly, a cleaning assembly, a detection assembly, a nozzle transfer assembly, and a curing assembly;

[0009] The PLC controller serves as the control core of the spraying equipment and is connected to the fixture transfer component, cleaning component, detection component, nozzle transfer component, and curing component by signal;

[0010] The gantry and the square bracket are arranged on the frame along the y-axis direction, and the front of the gantry is provided with a first x-axis horse and the back is provided with a second x-axis horse;

[0011] The fixture transfer assembly includes a y-axis horse, a rotating table, and a fixture assembly. The y-axis horse is arranged on the base and is located below the gantry and the square bracket. The rotating table is installed on the y-axis horse, and the fixture assembly is installed on the rotating table.

[0012] The cleaning assembly includes a cleaning nozzle and a cleaning nozzle, wherein the cleaning nozzle is mounted on the first x-axis, and the cleaning nozzle is mounted on both sides of the cleaning nozzle;

[0013] The detection assembly includes a detection camera, and the detection camera is mounted on the first x-axis line;

[0014] The nozzle transfer assembly is provided with two groups, both of which are installed on the second x-axis line. The nozzle transfer assembly includes a first z-axis module, an inkjet nozzle, a positioning camera, and a pre-curing lamp. The first z-axis module is installed on the second x-axis line. The inkjet nozzle and the positioning camera are both installed on the first z-axis module. The pre-curing lamp is installed on the outside of the inkjet nozzle.

[0015] The curing assembly includes a curing lamp, the length of which is greater than that of the fixture assembly. The square bracket is provided with an x-axis module and an x-axis guide rail on both sides along the x-axis direction, and the curing lamp is slidably connected to the x-axis module and the x-axis guide rail.

[0016] Furthermore, the jig transfer assembly also includes a marble base, which is mounted on a frame, and the Y-axis motor is mounted on the marble base. A height adjustment mechanism for adjusting the levelness of the marble base is provided between the marble base and the frame; the height adjustment mechanism is an electric jack, and an electronic level is provided on the marble base. Both the electric jack and the electronic level are connected to the PLC controller signal, and the PLC controller receives the deflection information of the marble base table sent by the electronic level to control the lifting and lowering of the electric jack, thereby adjusting the levelness of the marble base table.

[0017] Furthermore, a metal plate is provided on the side of the marble base, and the frame is provided with a metal edge around the marble base. The metal plate and the metal edge are locked to fix the marble base on the frame. An adjusting screw is provided on the metal edge, and the adjusting screw abuts against the side wall of the marble base.

[0018] Furthermore, the jig assembly includes a jig base plate and a jig plate. The jig base plate is mounted on a rotating table, and the jig plate is mounted on the jig base plate. Multiple height adjustment screws are provided between the jig base plate and the jig plate, and a vacuum suction device is provided inside the jig plate.

[0019] Furthermore, the cleaning assembly further includes a second z-axis module, the second z-axis module is mounted on the first x-axis axis, and the cleaning nozzle is mounted on the second z-axis module.

[0020] Furthermore, the detection component also includes a third z-axis module, the third z-axis module is installed on the first x-axis line, and the detection camera is installed on the third z-axis module.

[0021] Furthermore, the nozzle transfer assembly further includes a rotating mechanism, the rotating mechanism is arranged on the first z-axis module, and the inkjet nozzle is arranged on the rotating mechanism.

[0022] Furthermore, the curing assembly further includes a connecting rod, the curing lamp is mounted on the connecting rod, and both ends of the connecting rod are respectively slidably connected to the x-axis module and the x-axis guide rail.

[0023] Furthermore, it also includes a waste discharge assembly, which includes a waste discharge base, a waste discharge funnel, a waste discharge nozzle and an ink cover. The waste discharge base is located on one side of the nozzle transfer assembly, the waste discharge funnel is arranged on the waste discharge base, the waste discharge nozzle is installed on the waste discharge funnel, and the ink cover is installed on the waste discharge funnel.

[0024] A method for using an IJP spraying device suitable for large-size panels includes the following steps:

[0025] S1 Loading: The large-sized panel is manually placed on the jig plate, and the vacuum suction device in the jig plate is opened to fix the panel to complete the loading;

[0026] S2 Cleaning: After loading, the jig assembly carrying the panel moves to the bottom of the cleaning nozzle via the Y-axis motor. The cleaning nozzle moves to the top of both sides of the panel in turn, and cleans both sides of the panel as the panel moves along the Y-axis motor. When the cleaning nozzle is cleaning, the suction nozzles on both sides of the cleaning nozzle absorb the substances sprayed by the cleaning nozzle on the panel. After cleaning, the panel is rotated 90 degrees via the rotating table, and the cleaning nozzle moves to the top of the other two sides of the panel to complete the cleaning of the other two sides.

[0027] S3 Positioning: After cleaning, the jig assembly carrying the panel moves to the bottom of the nozzle transfer assembly via the Y-axis motor. Two positioning cameras take pictures of the four corners of the panel for positioning. The rotating table drives the jig assembly to rotate according to the results of the pictures, thereby adjusting the angle of the panel and completing the positioning calibration.

[0028] S4 printing: After positioning is completed, the two inkjet heads are moved to the top of both sides of the panel. While the panel moves along the Y-axis, the two inkjet heads print on both sides of the panel. After printing is completed, the panel is rotated 90° on the rotating table, and the inkjet heads are moved to the top of the other two sides of the panel to complete printing on the other two sides. While the inkjet heads are printing, the pre-curing lamp pre-cures the areas printed by the inkjet heads on the panel.

[0029] S5 Curing: After printing is completed, the jig assembly carrying the panel moves to the bottom of the square bracket via the Y-axis motor. The panel remains stationary, and the curing lamp moves along the X-axis direction via the X-axis module and X-axis guide rail on the square bracket to irradiate and cure the entire panel.

[0030] S6 inspection: After curing is completed, the fixture assembly carrying the panel moves to the bottom of the inspection camera via the Y-axis motor. The inspection camera moves to the top of both sides of the panel in sequence, and scans both sides of the panel while the panel moves along the Y-axis motor to determine the spraying condition. After the scanning is completed, the panel is rotated 90° via the rotating table, and the inspection camera moves to the top of the other two sides of the panel to complete the scanning inspection of the other two sides.

[0031] S7 unloading: After the inspection panel is printed and qualified, the jig assembly carrying the panel moves back to the loading position through the Y-axis motor, the vacuum suction device in the jig plate is closed, and the panel is manually removed to complete the unloading.

[0032] After adopting the above solution, the beneficial effects of the present invention are:

[0033] 1. High printing accuracy. The present invention is equipped with two positioning cameras, which take pictures of the two corners of the panel at the same time. The rotating table adjusts the angle of the panel according to the results of the positioning camera and performs positioning calibration, so that the two inkjet nozzles can be accurately aligned with the two sides of the panel, respectively, to achieve precise printing and improve printing accuracy.

[0034] 2. High production efficiency. The present invention is equipped with two positioning cameras and two inkjet heads. The positioning camera has a large depth of field range and can also move up and down through the first z-axis module to adjust the height of the positioning camera according to the change of panel size, so that the depth of field range of the two positioning cameras can cover the four corners of the panel, and quickly take pictures and position the four corners of the panel to achieve rapid positioning; the two inkjet heads can print on both sides of the product at the same time, which greatly saves printing time and thus improves printing speed; in addition, the length of the curing lamp of the present invention is greater than the length of the jig assembly, that is, greater than the length of the panel. When the panel is moved to the bottom of the square bracket for curing, the panel does not move. The curing lamp can be moved along the x-axis above the panel through the x-axis module and the x-axis guide rail on the square bracket to complete the curing of the entire panel. The curing lamp is light in weight and moves fast, which can further improve production efficiency.

[0035] 3. To solve the problem of ink diffusion after printing, the inkjet nozzle of the present invention is provided with a pre-curing lamp. While the inkjet nozzle is printing on the panel, the pre-curing lamp is turned on to pre-cure the panel, realizing curing while printing, and preventing the ink from diffusing in the parts of the panel printed earlier due to failure to cure in time because the product is too large and the spraying time is too long. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The structure of the whole machine of the present invention is shown as follows Figure 1 ;

[0037] Figure 2 The structure of the whole machine of the present invention is shown as follows Figure 2 ;

[0038] Figure 3 The structure of the whole machine of the present invention is shown as follows Figure 3 ;

[0039] Figure 4 The structure of the whole machine of the present invention is shown as follows Figure 4 ;

[0040] Figure 5 It is a structural schematic diagram of the jig transfer assembly of the present invention;

[0041] Figure 6 for Figure 2 A partial enlarged view of the middle part;

[0042] Figure 7 This is a schematic diagram of the structure of the curing assembly of the present invention installed on a square bracket;

[0043] Figure 8 Schematic diagram of the structure of the waste discharge component and ink viewing component of the present invention;

[0044] Figure 9 for Figure 4 A partial enlarged view of point B in the middle;

[0045] Figure 10 A flowchart of adjusting the levelness of a marble base according to the present invention;

[0046] Figure 11 This is a simulation diagram of adjusting the levelness of a marble base according to the present invention.

[0047] Description of labels:

[0048] 1. Frame; 2. Gantry; 21. First x-axis motor; 22. Second x-axis motor; 3. Square bracket; 31. x-axis module; 32. x-axis guide rail; 4. Fixture transfer assembly; 41. y-axis motor; 42. Rotary table; 43. Fixture assembly; 431. Fixture base; 432. Fixture plate; 433. Height adjustment screw; 44. Marble base; 45. Electric jack; 46. Electronic level; 47. Metal plate; 48. Metal 5. Detection component; 51. Detection camera; 52. Third z-axis module; 6. Printhead transfer component; 61. First z-axis module; 62. Inkjet nozzle; 63. Positioning camera; 64. Pre-curing lamp; 7. Curing component; 71. Curing lamp; 72. Connecting rod; 8. Waste discharge component; 81. Waste discharge base; 82. Waste discharge funnel; 83. Ink cover; 9. Ink viewing component; 91. Ink viewing camera; 92. Light source; 93. Install and adjust the base. DETAILED DESCRIPTION

[0049] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] The present invention provides an IJP spraying device suitable for large-size panels, such as Figures 1 to 5 As shown, it includes a frame 1, a gantry 2, a square bracket 3, a PLC controller (not shown in the figure), a fixture transfer component 4, a cleaning component, a detection component 5, a nozzle transfer component 6, and a curing component 7.

[0051] The PLC controller serves as the control core of the spraying equipment and is connected to the jig transfer component 4, the cleaning component, the detection component 5, the nozzle transfer component 6, and the curing component 7 by signal.

[0052] The gantry 2 and the square bracket 3 are arranged on the frame 1 along the y-axis direction. The front of the gantry 2 is provided with a first x-axis line horse 21, and the back is provided with a second x-axis line horse 22. The square bracket 3 is provided with an x-axis module 31 and an x-axis guide rail 32 on both sides along the x-axis direction.

[0053] like Figure 1 and Figure 5 As shown, the jig transfer assembly 4 includes a y-axis line horse 41, a rotating table 42, and a jig assembly 43. The y-axis line horse 41 is arranged on the base and is located below the gantry 2 and the square bracket 3 and passes through the frame 1 along the y-axis direction. The rotating table 42 is installed on the y-axis line horse 41, and the jig assembly 43 is installed on the rotating table 42. The jig assembly 43 is used to carry the panel, and the rotating table 42 drives the jig assembly 43 to rotate, thereby driving the panel to rotate horizontally.

[0054] The rotating table 42 is preferably a direct drive motor, that is, a DD motor, which has a large torque and can output high torque at low speed. It does not require a reduction mechanism, that is, it does not require a reducer, gears, pulleys and other connecting mechanisms, and is directly connected to the load. Therefore, the fixture assembly 43 can be directly installed on the direct drive motor, reducing the positioning error caused by the above-mentioned connecting mechanism, and can more accurately adjust the angle of the panel to achieve precise inkjet.

[0055] The jig assembly 43 includes a jig base plate 431 and a jig plate 432. The jig base plate 431 is installed on the rotating table 42, and the jig plate 432 is installed on the jig base plate 431. A plurality of height adjustment screws 433 are provided between the jig base plate 431 and the jig plate 432. The height adjustment screws 433 can adjust the height of the panel. A vacuum suction device is provided in the jig plate 432, and the vacuum suction device is used to fix the panel on the jig plate 432.

[0056] like Figure 1 and Figure 5 As shown, the jig transfer assembly 4 also includes a marble base 44, which is mounted on the frame 1, and the y-axis motor 41 is mounted on the marble base 44. The marble base 44 has a flat surface, good stability, high strength, high hardness, no magnetic reaction, and can maintain high precision under heavy loads. Before the entire device is put into operation, the device will be transported over a long distance. During the transportation, the marble base 44 will be offset relative to the frame 1, resulting in an uneven surface of the marble base 44, which will affect the printing accuracy of the panel; and because the marble base 44 and the panel are heavy, the long-term operation of the device will cause mechanical fatigue of the frame 1, and some parts of the frame 1 will become concave, which will also affect the flatness of the surface of the marble base 44. Therefore, it is necessary to set a height adjustment mechanism between the marble base 44 and the frame 1 to adjust the flatness of the surface of the marble base 44.

[0057] like Figure 10 and Figure 11 As shown, due to the large weight of the marble base 44, a jack can be used to adjust it. The jack can be an ordinary hydraulic jack that needs to be manually adjusted, or an electronically controlled jack 45 that can be automatically adjusted. When the electronically controlled jack 45 is used for adjustment, an electronic level 46 can be set on the marble base 44. Both the electronically controlled jack 45 and the electronic level 46 are connected to the PLC controller signal. The electronically controlled jack 45 is provided with a plurality of matrix-distributed jacks between the marble base 44 and the frame 1, as shown in FIG. Figure 11As shown, taking the four electric jacks 45 in the length direction of the marble as an example, the adjustment process of the levelness of the marble base 44 is as follows: the PLC controller controls the initialization of the electric jacks 45, so that each electric jack 45 returns to the origin, and the marble base 44 is in the initial position. The electronic level 46 outputs the information of the current deflection direction and deflection angle of the marble base table to the PLC controller. If the left end of the marble base 44 is higher and the right end is lower in the length direction, and the deflection angle of the marble base 44 table is α, and the marble length direction is distributed from left to right as No. 1, Jacks No. 2, No. 3, and No. 4 are located at the far left end of the marble base 44. The PLC controller records the distance between Jack No. 1 and the other jacks as Ln. Using this highest point as a reference point, the PLC controller immobilizes Jack No. 1 and raises Jacks No. 2, No. 3, and No. 4 upward. The height of each electric jack 45 is calculated as h = tanα × Ln × K, where K is the compensation, which converts the angle measured by the electronic level 46 into the extension and contraction of the electric jack 45. When each electric jack 45 is fully extended, the PLC controller determines whether the real-time input from the electronic level 46 has leveled the marble base 44. If not, the above operation is repeated, forming a closed loop. Furthermore, the PLC controller controlling the electric jacks 45 can be the same PLC controller that controls the entire spraying equipment, or a separate PLC controller can be provided to control the electric jacks 45.

[0058] In addition to the problem of the horizontality of the marble base 44, the position of the marble base 44 in the x-axis direction may also be offset. A metal plate 47 may be set on the side of the marble base 44. The frame 1 is provided with vertical metal edges 48 around the marble base 44. The metal plate 47 is provided with a locking device and is connected to the metal edge 48 through the locking device. The metal edge 48 is provided with an adjusting screw, which abuts the side wall of the marble base 44. Rotating the adjusting screw can push the marble base 44 to move along the x-axis direction, thereby adjusting the position of the marble base 44 in the x-axis direction. After the adjustment is completed, the metal plate 47 and the metal edge 48 on the marble side are locked together to fix the marble base 44 on the frame 1.

[0059] like Figure 4 and Figure 9As shown, the inspection assembly 5 includes an inspection camera 51 and a third z-axis module 52. The third z-axis module 52 is mounted on the first x-axis axis 21. The inspection camera 51 is mounted on the third z-axis module 52. The inspection camera 51 can be moved along the x-axis via the first x-axis axis 21 to sequentially inspect the four edges of the printed panel to determine if the print is qualified. The inspection camera 51 can also adjust the distance between the inspection camera 51 and the panel via the third x-axis module 31 to meet the requirements for inspecting panels of varying thicknesses. The inspection camera 51 is preferably an AOI inspection camera, which provides fast inspection speed and high inspection accuracy.

[0060] The cleaning assembly includes a cleaning nozzle, a cleaning suction nozzle and a second z-axis module. The second z-axis module is mounted on the first x-axis horse 21. The cleaning nozzle is mounted on the second z-axis module. The cleaning suction nozzle is mounted on both sides of the cleaning nozzle. The cleaning assembly is not shown in the figure. The cleaning assembly and the detection assembly 5 are mounted side by side on the first x-axis horse. The specific installation position can refer to the detection assembly 5. The cleaning nozzle can be moved along the x-axis direction through the first x-axis horse 21 to clean the four sides of the panel in turn. The suction nozzle can absorb the dirty matter ejected by the cleaning nozzle on the panel. The cleaning nozzle can also adjust the distance between the cleaning nozzle and the panel through the second z-axis module to meet the cleaning needs of panels of different thicknesses. The cleaning nozzle is preferably a plasma nozzle, that is, a plasma cleaning nozzle, which achieves the cleaning purpose by spraying high-speed plasma to bombard the panel surface. It has the advantages of high cleaning efficiency, no need for drying after cleaning, and can clean products of any shape.

[0061] The first x-axis motor 21 is a double-moving motor, and the cleaning component and the detection component 5 are installed on different movers of the first x-axis motor 21. The two can move separately without affecting each other.

[0062] like Figure 2 and Figure 6As shown, the nozzle transfer assembly 6 is provided with two groups, both mounted on the second x-axis horse 22. The nozzle transfer assembly 6 includes a first z-axis module 61, an inkjet head 62, a positioning camera 63, and a pre-curing lamp 64. The first z-axis module 61 is mounted on the second x-axis horse 22, the inkjet head 62 and the positioning camera 63 are both mounted on the first z-axis module 61, and the pre-curing lamp 64 is mounted outside the inkjet head 62. The two positioning cameras 63 are preferably CCD cameras that can sense light. One positioning camera 63 can take pictures of two corners. The two positioning cameras 63 can take pictures of the four corners of the panel respectively and convert the pictures into digital signals to be sent to the PLC controller. The PLC controller controls the rotating stage 42 to adjust the angle of the panel based on the picture results, so that the two inkjet heads 62 are aligned with the two sides of the panel, so that the inkjet heads 62 can sequentially perform inkjet printing on the four sides of the panel, thereby improving printing accuracy. While the inkjet head 62 prints the panel, the pre-curing lamp 64 on the inkjet head 62 also pre-cures the panel, achieving simultaneous printing and curing. This prevents ink from spreading in areas of the panel printed earlier due to delayed curing caused by excessive product size and prolonged spraying time. For panels of varying thicknesses, the inkjet head 62 and positioning camera 63 can be moved up and down via the first z-axis module 61 to adjust the distance from the panel as needed, thereby improving printing accuracy. The positioning camera 63 is also equipped with a height sensor (not shown). When the product height changes, the height sensor senses the change in panel height and transmits this information to the PLC controller, which controls the up and down movement of the inkjet head 62 to adjust the distance between the inkjet head 62 and the panel.

[0063] Each nozzle transfer assembly 6 is equipped with two first z-axis modules 61. The inkjet heads 62 and positioning cameras 63 are mounted on different first z-axis modules 61, and their heights can be adjusted independently to reduce the risk of collision during z-axis movement. The nozzle transfer assembly also includes a rotation mechanism mounted on the first z-axis modules 61. The inkjet heads 62 are mounted on the rotation mechanism (not shown). The rotation mechanism drives the inkjet heads 62 to rotate, thereby adjusting the angle of the inkjet heads 62 and the inkjet width of the inkjet heads 62.

[0064] like Figure 3 and Figure 7As shown, the curing assembly 7 includes a curing lamp 71, and the square bracket 3 is provided with an x-axis module 31 and an x-axis guide rail 32 on both sides along the x-axis direction. The curing lamp 71 is slidably connected to the x-axis module 31 and the x-axis guide rail 32 on both sides of the square bracket 3, specifically through a connecting rod 72. The curing lamp 71 is installed on the connecting rod 72, and the two ends of the connecting rod 72 are slidably connected to the x-axis module 31 and the x-axis guide rail 32 respectively. The length of the curing lamp 71 is greater than the length of the jig assembly 43, that is, the length of the curing lamp 71 is greater than the length of the jig plate 432. When the panel is printed and moved to the curing station, that is, moved to the bottom of the square bracket 3, the curing lamp 71 moves above the panel along the x-axis direction through the x-axis module 31 and the x-axis guide rail 32 to cure the entire panel. The panel does not move, but the curing lamp 71 moves. The curing lamp 71 is light in weight and moves fast, which can increase the curing speed. The curing lamp 71 is preferably a UV curing lamp 71, which has a long life, can be lit instantly, has stable light output, has good uniform irradiation effect, and has high curing efficiency.

[0065] The gantry 2 is preferably a marble gantry 2, and the curing lamp 71 moves slowly along the x-axis direction through the x-axis module 31 and the x-axis guide rail 32, which will not affect the operation of the various components on the gantry 2 and has a long service life; the square bracket 3 is a bracket made of square steel, which can save materials and reduce costs.

[0066] like Figure 8 As shown, the present invention also includes a waste discharge assembly 8, which includes a waste discharge base 81, a waste discharge funnel 82, a waste discharge nozzle and an ink cover 83. The waste discharge base 81 is located on one side of the nozzle transfer assembly, the waste discharge funnel 82 is arranged on the waste discharge base 81, the waste discharge nozzle is installed on the waste discharge funnel 82, and the ink cover 83 is installed on the waste discharge funnel 82. When the inkjet head 62 is running, the ink cover 83 is usually not installed; while the inkjet head 62 is waiting to print, the inkjet head 62 can be debugged, and the inkjet head 62 can be moved to the waste funnel 82 to spray ink, and then moved to the waste suction nozzle, which sucks away the residual ink on the inkjet head 62 to complete the debugging of the inkjet head 62; when the inkjet head 62 is stopped, the ink cover 83 is installed on the waste funnel 82, and the inkjet head 62 is moved downward so that the ink port on the inkjet head 62 is covered with the ink cover 83, which can protect the inkjet head 62 and prevent the ink port of the inkjet head 62 from being blocked due to long-term contact with air.

[0067] like Figure 8As shown, the present invention also includes an ink viewing assembly 9, which includes a mounting and adjusting base 93 and an ink viewing instrument. The mounting and adjusting base 93 is rotatably mounted on the waste discharge base 81. Two mounting and adjusting bases 93 are provided. The ink viewing instrument includes an ink viewing camera 91 and a light source 92. The ink viewing camera 91 and the light source 92 are respectively mounted on two mounting and adjusting bases 93 relative to each other. The mounting and adjusting bases 93 are rotatable. The ink viewing camera 91 and the light source 92 can rotate with the mounting and adjusting bases 93 to adjust the focal length and observe the inkjet head 62 spraying ink into the waste discharge funnel 82 during standby, thereby completing the debugging. The ink viewing assembly 9 and the waste discharge assembly 8 can share a base. During ink observation, the waste liquid generated by the inkjet head 62 can drip directly into the waste discharge funnel 82. After debugging, the ink viewing assembly 9 can be quickly disassembled and placed aside, saving equipment width and space.

[0068] The present invention also includes an ink path system, which includes an ink supply system and an air circuit system. Both the ink supply system and the air circuit system are connected to the inkjet nozzle 62 to supply ink and pressure to the inkjet nozzle 62 to ensure stable ink jetting of the inkjet nozzle 62.

[0069] The present invention also provides a method for using an IJP spraying device suitable for large-size panels, comprising the following steps:

[0070] S1 Loading: The large-sized panel is manually placed on the jig plate 432. The vacuum suction device in the jig plate 432 is opened to fix the panel, completing the loading;

[0071] S2 Cleaning: After loading is completed, the jig assembly 43 carrying the panel moves to the bottom of the cleaning nozzle via the y-axis motor 41. The cleaning nozzle moves to the top of both sides of the panel in turn, and cleans both sides of the panel in coordination with the movement of the panel along the y-axis motor 41. When the cleaning nozzle is cleaning, the suction nozzles on both sides of the cleaning nozzle absorb the dirt ejected by the cleaning nozzle on the panel. After cleaning is completed, the panel is rotated 90° via the rotating table 42, and the cleaning nozzle moves to the top of the other two sides of the panel to complete the cleaning of the other two sides.

[0072] S3 Positioning: After cleaning is completed, the jig assembly 43 carrying the panel is moved to the bottom of the nozzle transfer assembly 6 via the Y-axis motor 41. Two positioning cameras 63 respectively take pictures of the four corners of the panel for positioning. The rotating stage 42 drives the jig assembly 43 to rotate according to the results of the pictures, thereby adjusting the angle of the panel and completing the positioning calibration;

[0073] S4 printing: After positioning is completed, the two inkjet heads 62 are respectively moved to the upper sides of the panel. While the panel moves along the y-axis 41, the two inkjet heads 62 respectively perform inkjet printing on the two sides of the panel. After printing is completed, the panel is rotated 90° by the rotating table 42, and the inkjet heads 62 are moved to the upper sides of the other two sides of the panel to complete printing on the other two sides. While the inkjet heads 62 are printing, the pre-curing lamp 64 pre-cures the areas printed by the inkjet heads 62 on the panel, and pre-curing is performed while printing;

[0074] S5 Curing: After printing is completed, the jig assembly 43 carrying the panel is moved to the bottom of the square bracket 3, that is, below the center of the square bracket 3, via the y-axis motor 41. The panel remains stationary, and the curing lamp 71 moves along the x-axis direction via the x-axis module 31 and the x-axis guide rail 32 on the square bracket 3 to irradiate and cure the entire panel.

[0075] S6 Inspection: After the curing is completed, the jig assembly 43 carrying the panel moves in the opposite direction via the y-axis motor 41 to the bottom of the inspection camera 51. The inspection camera 51 moves to the top of both sides of the panel in turn, and scans both sides of the panel while the panel moves along the y-axis motor 41 to determine the spraying status. After the scanning is completed, the panel is rotated 90° via the rotating table 42, and the inspection camera 51 moves to the top of the other two sides of the panel to complete the scanning inspection of the other two sides.

[0076] S7 Unloading: After the panel is tested and found to be qualified, the jig assembly 43 carrying the panel is moved back to the loading position through the Y-axis motor 41, the vacuum suction device in the jig plate 432 is closed, and the panel is manually removed to complete unloading.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. An IJP spraying device suitable for large-size panels, characterized by: Including frame, gantry, square bracket, PLC controller, fixture transfer assembly, cleaning assembly, detection assembly, nozzle transfer assembly, curing assembly; The PLC controller serves as the control core of the spraying equipment and is connected to the fixture transfer component, cleaning component, detection component, nozzle transfer component, and curing component by signal; The gantry and the square bracket are arranged on the frame along the y-axis direction, and the front of the gantry is provided with a first x-axis horse and the back is provided with a second x-axis horse; The jig transfer assembly includes a y-axis horse, a rotating table, a jig assembly and a base. The y-axis horse is arranged on the base and is located below the gantry and the square bracket. The rotating table is mounted on the y-axis horse. The jig assembly is mounted on the rotating table. The jig assembly includes a jig base plate and a jig plate. A plurality of height adjustment screws are provided between the jig base plate and the jig plate. A vacuum suction device is provided in the jig plate. An electric jack for adjusting the levelness of the base is provided between the base and the frame, and an electronic level is provided on the base. Both the electric jack and the electronic level are connected to a PLC controller signal. The PLC controller receives the deflection information of the base surface sent by the electronic level to control the lifting and lowering of the electric jack, thereby adjusting the levelness of the base surface. The cleaning assembly includes a cleaning nozzle and a cleaning nozzle, wherein the cleaning nozzle is mounted on the first x-axis, and the cleaning nozzle is mounted on both sides of the cleaning nozzle; The detection assembly includes a detection camera, and the detection camera is mounted on the first x-axis line; The nozzle transfer assembly is provided with two groups, both of which are installed on the second x-axis line. The nozzle transfer assembly includes a first z-axis module, an inkjet nozzle, a positioning camera, and a pre-curing lamp. The first z-axis module is installed on the second x-axis line. The inkjet nozzle and the positioning camera are both installed on the first z-axis module. The pre-curing lamp is installed on the outside of the inkjet nozzle. The curing assembly includes a curing lamp, the length of which is greater than that of the fixture assembly. The square bracket is provided with an x-axis module and an x-axis guide rail on both sides along the x-axis direction, and the curing lamp is slidably connected to the x-axis module and the x-axis guide rail.

2. The IJP spraying equipment suitable for large-size panels according to claim 1, characterized in that: The base is a marble base, which is mounted on a frame, and the Y-axis motor is mounted on the marble base.

3. The IJP spraying equipment suitable for large-size panels according to claim 2, characterized in that: A metal plate is provided on the side of the marble base, and the frame is provided with a metal edge around the marble base. The metal plate and the metal edge are locked to fix the marble base on the frame. An adjusting screw is provided on the metal edge, and the adjusting screw abuts against the side wall of the marble base.

4. The IJP spraying equipment suitable for large-size panels according to claim 1, characterized in that: The jig base plate is mounted on the rotating table, and the jig plate is mounted on the jig base plate.

5. The IJP spraying equipment suitable for large-size panels according to claim 1, characterized in that: The cleaning assembly further includes a second z-axis module, which is mounted on the first x-axis axis. The cleaning nozzle is mounted on the second z-axis module.

6. The IJP spraying equipment suitable for large-size panels according to claim 1, characterized in that: The detection component also includes a third z-axis module, which is mounted on the first x-axis line, and the detection camera is mounted on the third z-axis module.

7. The IJP spraying equipment suitable for large-size panels according to claim 1, characterized in that: The nozzle transfer assembly further includes a rotating mechanism, which is arranged on the first z-axis module, and the inkjet nozzle is arranged on the rotating mechanism.

8. The IJP spraying equipment suitable for large-size panels according to claim 1, characterized in that: The curing assembly further includes a connecting rod, the curing lamp is mounted on the connecting rod, and both ends of the connecting rod are respectively slidably connected to the x-axis module and the x-axis guide rail.

9. The IJP spraying equipment suitable for large-size panels according to claim 1, characterized in that: It also includes a waste discharge assembly, which includes a waste discharge base, a waste discharge funnel, a waste discharge nozzle and an ink cover. The waste discharge base is located on one side of the nozzle transfer assembly, the waste discharge funnel is arranged on the waste discharge base, the waste discharge nozzle is installed on the waste discharge funnel, and the ink cover is installed on the waste discharge funnel.

10. A method for using an IJP spraying device for large-size panels according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1 Loading: The large-sized panel is manually placed on the jig plate, and the vacuum suction device in the jig plate is opened to fix the panel to complete the loading; S2 Cleaning: After loading, the jig assembly carrying the panel moves to the bottom of the cleaning nozzle via the Y-axis motor. The cleaning nozzle moves to the top of both sides of the panel in turn, and cleans both sides of the panel as the panel moves along the Y-axis motor. When the cleaning nozzle is cleaning, the suction nozzles on both sides of the cleaning nozzle absorb the substances sprayed by the cleaning nozzle on the panel. After cleaning, the panel is rotated 90 degrees via the rotating table, and the cleaning nozzle moves to the top of the other two sides of the panel to complete the cleaning of the other two sides. S3 Positioning: After cleaning, the jig assembly carrying the panel moves to the bottom of the nozzle transfer assembly via the Y-axis motor. Two positioning cameras take pictures of the four corners of the panel for positioning. The rotating table drives the jig assembly to rotate according to the results of the pictures, thereby adjusting the angle of the panel and completing the positioning calibration. S4 printing: After positioning is completed, the two inkjet heads are moved to the top of both sides of the panel. While the panel moves along the Y-axis, the two inkjet heads print on both sides of the panel. After printing is completed, the panel is rotated 90° on the rotating table, and the inkjet heads are moved to the top of the other two sides of the panel to complete printing on the other two sides. While the inkjet heads are printing, the pre-curing lamp pre-cures the areas printed by the inkjet heads on the panel. S5 Curing: After printing is completed, the jig assembly carrying the panel moves to the bottom of the square bracket via the Y-axis motor. The panel remains stationary, and the curing lamp moves along the X-axis direction via the X-axis module and X-axis guide rail on the square bracket to irradiate and cure the entire panel. S6 inspection: After curing is completed, the fixture assembly carrying the panel moves to the bottom of the inspection camera via the Y-axis motor. The inspection camera moves to the top of both sides of the panel in sequence, and scans both sides of the panel while the panel moves along the Y-axis motor to determine the spraying condition. After the scanning is completed, the panel is rotated 90° via the rotating table, and the inspection camera moves to the top of the other two sides of the panel to complete the scanning inspection of the other two sides. S7 unloading: After the inspection panel is printed and qualified, the jig assembly carrying the panel moves back to the loading position through the Y-axis motor, the vacuum suction device in the jig plate is closed, and the panel is manually removed to complete the unloading.

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