An inkjet machine

Abstract

The present invention discloses an inkjet machine, comprising: a machine, a loading mechanism arranged at the head end of the machine, a conveying mechanism arranged on the machine, a printing table arranged on the conveying mechanism, a lifting mechanism arranged on the conveying mechanism and located below the printing table, a printing carriage mechanism arranged above the printing table, an ink supply mechanism arranged in the machine, and a unloading mechanism arranged at the tail end of the machine. The present invention pushes the LED panels in the first material box onto the conveying mechanism one by one through the loading mechanism, the conveying mechanism transports the LED panels to the bottom of the printing carriage mechanism, the printing carriage mechanism prints the LED panels, and then pushes the printed LED panels into the second material box through the unloading mechanism. The present invention realizes automatic loading of LED panels, automatic printing and automatic unloading, and has a high degree of automation.

Description

Technical Field

[0001] The invention relates to the field of LED light-emitting panel manufacturing, and in particular to an inkjet machine. Background Art

[0002] With the continuous development of liquid crystal display technology, the application field of liquid crystal displays is also constantly expanding. Driven by the market of liquid crystal displays, the backlight industry is booming. The LED light-emitting panel in the backlight source is composed of a circuit board and an LED light array and a driving circuit respectively arranged on the front and back sides of the circuit board. Generally, a concave hole array is formed on the front side. The bottom of each concave hole is provided with a plurality of immersion gold pads for fixing the LED light-emitting chip and electrode connection. Then, the LED light-emitting chip and the welding wire in each concave hole are encapsulated and protected by epoxy resin through dispensing to form a light-transmitting mirror. In order to evenly convert each LED point light source into a surface light source and better control the uniformity of the screen brightness, in addition to working hard on the backlight control circuit and panel quality, it is also necessary to cover the metal exposed pad area outside each LED light source with a specific coating so that no scattered reflection will occur when the LED lamp is lit. With the rise of digital inkjet printing technology, the LED liquid crystal display industry is gradually trying to apply digital inkjet printing technology to the LED display process, including the above-mentioned coating inkjet printing and other identification applications of LED processes, such as text characters, NG logos, material traceability barcodes, QR codes, immersion gold protection, packaging, etc. However, there is currently a lack of equipment to automatically inkjet print on LED light-emitting panels. Summary of the invention

[0003] The purpose of the present invention is to provide an inkjet machine which can automatically load, inkjet print and unload LED panels.

[0004] The technical solution of the present invention is as follows: an inkjet machine is provided, comprising: a machine platform, a loading mechanism arranged at the head end of the machine platform, a conveying mechanism arranged on the machine platform, a printing table arranged on the conveying mechanism, a lifting mechanism arranged on the conveying mechanism and located below the printing table, a printing carriage mechanism arranged above the printing table, an ink supply mechanism arranged in the machine platform, and a unloading mechanism arranged at the tail end of the machine platform.

[0005] Furthermore, the loading mechanism includes: a loading frame, a first Z-axis linear module arranged on the loading frame, a plurality of first material box carriers arranged on the first Z-axis linear module, a first material box arranged on the first material box carrier, a plate feed push rod arranged next to the first material box, and a first driving component for pushing the plate feed push rod to move.

[0006] Furthermore, the head end of the conveying mechanism is docked with the loading mechanism, and the tail end of the conveying mechanism is docked with the unloading mechanism, which includes: a front conveying belt arranged on the machine platform, a rear conveying belt parallel to the front conveying belt, a pulley driving the front conveying belt and the rear conveying belt to rotate, a driving device driving the pulley to rotate, a front guide rail parallel to the front conveying belt, and a rear guide rail parallel to the rear conveying belt, and the printing table is arranged on the front guide rail and the rear guide rail.

[0007] Furthermore, the printing carriage mechanism includes: a left gantry bracket arranged on the machine platform, a right gantry bracket arranged on the opposite side of the left gantry bracket, a first linear motor module arranged on the left gantry bracket, a second linear motor module arranged on the right gantry bracket, a crossbeam arranged on the first linear motor module and the second linear motor module, a third linear motor module arranged on the crossbeam, and a printing carriage arranged on the third linear motor module.

[0008] Furthermore, the printing carriage includes: a nozzle, a CCD camera and a UV lamp.

[0009] Furthermore, the ink supply mechanism is connected to the nozzle, and includes: a main ink barrel, a secondary ink cartridge, an ink pump, a filter, a negative pressure tank, a vacuum pump, and an ink tube.

[0010] Furthermore, the ink supply mechanism is a multi-ink path mechanism.

[0011] Furthermore, the unloading mechanism includes: a unloading frame, a second Z-axis linear module arranged on the unloading frame, a plurality of second material box carriers arranged on the second Z-axis linear module, a second material box arranged on the second material box carrier, a plate ejection push rod arranged next to the second material box, and a second driving component for pushing the plate ejection push rod to move.

[0012] Furthermore, the inkjet printer also includes a nozzle cleaning device arranged beside the printing carriage mechanism.

[0013] Furthermore, the inkjet printer also includes a table height measuring device which is arranged on both sides of the conveying mechanism in a facing manner.

[0014] By adopting the above scheme, the present invention pushes the LED panels in the first material box one by one onto the conveying mechanism through the feeding mechanism, the conveying mechanism transports the LED panels to the bottom of the printing carriage mechanism, the printing carriage mechanism prints the LED panels, and then pushes the printed LED panels into the second material box through the unloading mechanism. The present invention realizes automatic feeding of LED panels, automatic printing and automatic unloading, and has a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0017] Figure 3 for Figure 1 Schematic diagram of the enlarged portion B. DETAILED DESCRIPTION

[0018] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] See also Figures 1 to 3 The present invention provides an inkjet machine, comprising: a machine platform 1, a loading mechanism 2 arranged at the head end of the machine platform 1, a conveying mechanism 3 arranged on the machine platform 1, a printing table 4 arranged on the conveying mechanism 3, a lifting mechanism arranged on the conveying mechanism 3 and located below the printing table 4, a printing carriage mechanism 5 arranged above the printing table 4, an ink supply mechanism 6 arranged in the machine platform 1, and a unloading mechanism 7 arranged at the tail end of the machine platform 1.

[0020] The loading mechanism 2 includes: a loading frame 21, a first Z-axis linear module arranged on the loading frame 21, a plurality of first material box carriers 22 arranged on the first Z-axis linear module, a first material box 23 arranged on the first material box carrier 22, a plate feed push rod 24 arranged next to the first material box 23, and a first driving component for pushing the plate feed push rod 24 to move.

[0021] The first material box 23 is used to place the LED panels 100 to be printed. The inner wall of the first material box 23 is provided with several layers of saw teeth 231 from top to bottom. Each saw tooth 231 corresponds to a layer of LED panel 100, so that the LED panels 100 are stored in the first material box 23 layer by layer, ensuring that they do not contact each other. A first material box 23 is placed on each set of first material box carriers 22. In order to improve work efficiency, the number of first material box carriers 22 is not less than two sets, ensuring that there are spare first material boxes 23, so that when the LED panel 100 in one of the first material boxes 23 is loaded, another first material box 23 can be loaded immediately, ensuring that there is no waiting gap time, thereby improving work efficiency. At the same time, the first material box 23 from the upstream process line is loaded onto the empty first material box carrier 22. In this embodiment, two sets of first material box carriers 22 are provided in the loading mechanism 2. The first driving assembly is used to push the panel push rod 24, which pushes the LED panels 100 one by one to the head end of the conveying mechanism 3. The first driving assembly can be a cylinder. The first Z-axis linear module can drive the first material box carrier 22 to move up and down, thereby adjusting the coordinates of the LED panel 100 on the Z-axis, so that the LED panel 100 to be pushed is flush with the conveying mechanism 3, ensuring that the LED panel 100 is pushed onto the conveying mechanism 3 smoothly.

[0022] The head end of the conveying mechanism 3 is docked with the loading mechanism 2, and the tail end of the conveying mechanism 3 is docked with the unloading mechanism 7. The conveying mechanism 3 includes: a front conveying belt 31 arranged on the machine 1, a rear conveying belt 32 parallel to the front conveying belt 31, a pulley 33 driving the front conveying belt 31 and the rear conveying belt 32 to rotate, a driving device driving the pulley 33 to rotate, a front guide rail parallel to the front conveying belt 31, and a rear guide rail parallel to the rear conveying belt 32, and the driving device can be a motor. The printing table 4 is arranged on the front guide rail and the rear guide rail, and the printing table 4 can move on the front guide rail and the rear guide rail.

[0023] The printing carriage mechanism 5 includes: a left gantry support 51 provided on the machine platform 1, a right gantry support 52 provided on the opposite side of the left gantry support 51, a first linear motor module 53 provided on the left gantry support 51, a second linear motor module 54 provided on the right gantry support 52, a crossbeam 55 provided on the first linear motor module 53 and the second linear motor module 54, a third linear motor module 56 provided on the crossbeam 55, and a printing carriage 57 provided on the third linear motor module 56. Under the joint action of the first linear motor module 53, the second linear motor module 54 and the third linear motor module 56, the printing carriage 57 can move forward, backward, left and right.

[0024] The inkjet printer further comprises a table height measuring device 8 disposed on both sides of the conveying mechanism 3 in a facing manner, and the table height measuring device 8 can be a laser sensor.

[0025] The lifting mechanism under the printing table 4 lifts the LED panel 100 being conveyed, so that it is separated from the front conveying belt 31 and the rear conveying belt 32, and the lifting mechanism and the printing table 4 above form a clamping state for the LED panel 100, only clamping the edge of the LED panel 100, and the area to be printed of the LED panel 100 is exposed. Then the printing table 4 and the lifting mechanism carry the clamped LED panel 100 to the printing area of ​​the equipment. During the operation, the table height measuring device 8 detects the LED panel 100 for warping and alarms, preventing the LED panel from interfering with the movement of the printing carriage, preventing the expensive print head from being damaged, and preventing the LED panel 100 from being scratched and scrapped.

[0026] The printing carriage 57 includes: a nozzle 571, a CCD camera 572 and a UV lamp 573. The CCD camera 572 sequentially takes pictures of 3 to 4 targets on the LED panel 100 and aligns them, and then the nozzle 571 scans and prints specific ink on the LED panel 100 according to the designed graphics to form the required coating or graphics and text. The UV lamp 573 instantly solidifies the ink sprayed on the LED panel 100, and then the lifting mechanism descends, and the printed LED panel 100 falls onto the conveying mechanism 3, and then the conveying mechanism 3 transports the LED panel 100 to the unloading mechanism 7.

[0027] The unloading mechanism 7 includes: an unloading frame 71, a second Z-axis linear module arranged on the unloading frame 71, a plurality of second material box carriers 72 arranged on the second Z-axis linear module, a second material box 73 arranged on the second material box carrier 72, a plate ejection push rod arranged beside the second material box 73, and a second driving assembly for pushing the plate ejection push rod to move, and the second driving assembly can be a cylinder. The second material box 73 is used to collect the printed LED panels 100, and the second driving assembly drives the plate ejection push rod to move, and pushes the LED panels 100 located on the conveying mechanism 3 into the second material box 73 one by one. In this embodiment, two sets of the second material box carriers 72 are also provided.

[0028] The inkjet printer also includes a nozzle cleaning device 9 disposed beside the printing carriage mechanism 5. The nozzle cleaning device 9 is an existing device on the market, and its structure is not described in detail here. The nozzle cleaning device 9 is installed beside the right gantry bracket 54. During the printing process, after a period of time, as needed, the nozzle 571 moves to the top of the nozzle cleaning device 9, and the nozzle cleaning device 9 is vertically lifted close to the nozzle 571 to suck and clean the ink remaining on the nozzle 571, thereby ensuring the quality and accuracy of the graphics or coating printed by the LED panel 100.

[0029] The ink supply mechanism 6 is connected to the nozzle 571, and includes: a main ink barrel, a secondary ink cartridge, an ink pump, a filter, a negative pressure tank, a vacuum pump, and an ink tube, and is used to provide ink to the nozzle 571. In this embodiment, the ink supply mechanism 6 is a multi-ink path mechanism, which can supply a variety of different inks at the same time to meet the production process requirements of LED panels for coatings or graphics of different colors.

[0030] The present invention pushes the LED panels in the first material box one by one onto the conveying mechanism through the feeding mechanism, the conveying mechanism transports the LED panels to the bottom of the printing carriage mechanism, the printing carriage mechanism prints the LED panels, and then the unloading mechanism pushes the printed LED panels into the second material box. The present invention realizes automatic feeding of LED panels, automatic printing and automatic unloading, and has a high degree of automation.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inkjet printer, characterized in that: include: A machine platform, a loading mechanism disposed at the head end of the machine platform, a conveying mechanism disposed on the machine platform, a printing platform disposed on the conveying mechanism, a lifting mechanism disposed on the conveying mechanism and located below the printing platform, a printing carriage mechanism disposed above the printing platform, an ink supply mechanism disposed in the machine platform, and a unloading mechanism disposed at the tail end of the machine platform; The head end of the conveying mechanism is connected to the loading mechanism, and the tail end of the conveying mechanism is connected to the unloading mechanism. The conveying mechanism includes: a front conveying belt arranged on the machine platform, a rear conveying belt parallel to the front conveying belt, a pulley driving the front conveying belt and the rear conveying belt to rotate, a driving device driving the pulley to rotate, a front guide rail parallel to the front conveying belt, and a rear guide rail parallel to the rear conveying belt. The printing table is arranged on the front guide rail and the rear guide rail. The lifting mechanism under the printing table lifts the LED panel to separate it from the front conveyor belt and the rear conveyor belt. The lifting mechanism and the printing table above clamp the LED panel, only clamping the edge of the LED panel, exposing the area to be printed on the LED panel. Then the printing table and the lifting mechanism carry the clamped LED panel to the printing area of ​​the equipment. The printing carriage mechanism includes: a left gantry bracket arranged on the machine platform, a right gantry bracket arranged on the opposite side of the left gantry bracket, a first linear motor module arranged on the left gantry bracket, a second linear motor module arranged on the right gantry bracket, a crossbeam arranged on the first linear motor module and the second linear motor module, a third linear motor module arranged on the crossbeam, and a printing carriage arranged on the third linear motor module; The printing carriage includes: a print head, a CCD camera and a UV lamp; The ink supply mechanism is a multi-ink path mechanism; It also includes a nozzle cleaning device arranged beside the printing carriage mechanism; It also includes table height measuring devices which are arranged on both sides of the conveying mechanism in a counter-radiation manner.

2. The inkjet printer according to claim 1, characterized in that: The loading mechanism includes: a loading frame, a first Z-axis linear module arranged on the loading frame, a plurality of first material box carriers arranged on the first Z-axis linear module, a first material box arranged on the first material box carrier, a plate feed push rod arranged next to the first material box, and a first driving component for pushing the plate feed push rod to move.

3. The inkjet printer according to claim 1, characterized in that: The ink supply mechanism is connected to the nozzle, and comprises: a main ink barrel, a secondary ink cartridge, an ink pump, a filter, a negative pressure tank, a vacuum pump, and an ink tube.

4. The inkjet printer according to claim 1, characterized in that: The unloading mechanism includes: an unloading frame, a second Z-axis linear module arranged on the unloading frame, a plurality of second material box carriers arranged on the second Z-axis linear module, a second material box arranged on the second material box carrier, a plate ejection push rod arranged next to the second material box, and a second driving component for pushing the plate ejection push rod to move.

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