Automatic jet printing equipment with visual identification structure and processing method of automatic jet printing equipment

Abstract

The invention relates to an automatic jet printing device with a visual identification structure and a processing method thereof, and the device comprises a frame body, the frame body is provided with a conveying assembly used for conveying a circuit board, the frame body is provided with a positioning assembly used for positioning the circuit board, the frame body is provided with a jet printing seat in a sliding manner, and the jet printing seat is provided with a jet printing machine head electrically connected to a control system. The frame body is provided with a driving assembly for driving the jet printing seat to slide, the jet printing seat is provided with a visual identification lens electrically connected to a control system, the visual identification lens is used for identifying characters printed on the circuit board, and the jet printing seat is provided with a clearing assembly used for removing the characters printed on the circuit board. The method has the effect of automatically identifying and automatically correcting the printed characters on the circuit board.

Description

Technical Field

[0001] The present application relates to the technical field of automatic printing equipment, and in particular to an automatic printing equipment with a visual recognition structure and a processing method thereof. Background Art

[0002] A jet printer is a special device that is mainly used for coding, printing, marking or identifying on printed circuit boards of electronic products. It includes two main types: ink jet printers and laser marking machines. Both are non-contact industrial marking equipment that can complete the marking of graphics, text, barcodes and other contents on circuit boards to achieve functions such as product identification and quality traceability.

[0003] A Chinese patent with announcement number CN201922643U discloses a jet printer for printing characters on each circuit board, including a carrier, a control device, a drive device, a first guide rail, a second guide rail and a printing device. The circuit board is placed on the carrier, the control device is fixed on the carrier and electrically connected to an external power supply, the first guide rail is fixedly mounted on the carrier, the second guide rail is slidably connected to the first guide rail, the printing device is movably connected to the second guide rail, the drive device is electrically connected to the control device, and the control device controls the drive device to drive the second guide rail and the printing device to move in different directions to print the circuit board.

[0004] During the use of the above technology, due to the chemical properties of the ink itself and other reasons, the characters printed on the circuit board may become unclear. The traditional solution is to use manual or dedicated detection equipment to check and then manually pick out the circuit boards with unclear characters. This process will increase the extra workload of the workers and has shortcomings. Summary of the invention

[0005] In order to improve the problem that printed characters on a circuit board are unclear and require additional subsequent processing, the present application provides an automatic printing device with a visual recognition structure and a processing method thereof.

[0006] In the first aspect, the present application provides an automatic printing device with a visual recognition structure, which adopts the following technical solution: An automatic printing device with a visual recognition structure comprises a frame, a conveying assembly for conveying a circuit board is arranged on the frame, a positioning assembly for positioning the circuit board is arranged on the frame, a printing seat is slidably arranged on the frame, a printing head electrically connected to a control system is arranged on the printing seat, a driving assembly for driving the printing seat to slide is arranged on the frame, and the driving assembly comprises a transverse slide rail, a longitudinal slide rail and a vertical slide rail with the same structure but different lengths, the transverse slide rail is arranged along the X axis, the longitudinal slide rail is arranged along the Y axis, and the vertical slide rail is arranged along the Y axis. The slide rails are arranged along the Z axis, the transverse slide rails include a frame arranged on the frame, a sliding screw is rotatably arranged on the frame, a slider is threadedly connected to the sliding screw, a sliding motor electrically connected to the control system is arranged on the frame, the sliding screw is coaxially arranged on the output shaft of the sliding motor, the frame of the longitudinal slide rail is arranged on the slider of the transverse slide rail, the frame of the vertical slide rail is arranged on the slider of the longitudinal slide rail, the printing seat is arranged on the slider of the vertical slide rail, and an electric motor is arranged on the printing seat. A visual recognition lens connected to the control system, the visual recognition lens is used to recognize characters printed on the circuit board, the printing seat is provided with a cleaning component, the cleaning component is used to remove the characters printed on the circuit board, the cleaning component includes a vertical cylinder arranged on the printing seat and electrically connected to the control system, a cleaning box is arranged on the piston rod of the vertical cylinder, the cleaning box is hollow inside and open to one side of the circuit board, a scraping wheel is rotatably arranged on the scraping wheel, a plurality of scrapers are arranged on the scraping wheel along the circumference of its axis, and an electrically connected A scraping motor of the control system, the scraping wheel is coaxially arranged on the output shaft of the scraping motor, a buffer rod is slidably arranged at the open end of the cleaning box, a buffer plate is arranged on the buffer rod, a compression spring is supported between the buffer plate and the cleaning box, the buffer plate is used to abut against the circuit board, a pressure sensor electrically connected to the control system is arranged on the cleaning box, the end of the buffer rod facing away from the buffer plate is used to abut against the sensing end of the pressure sensor, when the buffer rod triggers the pressure sensor, the scraper on the scraping wheel is attached to the surface of the circuit board.

[0007] By adopting the above technical scheme, the conveying component conveys the circuit board to the position to be processed on the frame, and is fixed by the positioning component at the same time. Then the control system starts the sliding motors on the horizontal slide rail, the longitudinal slide rail and the vertical slide rail, so that the printing seat can move freely above the circuit board, so as to facilitate the printing head on the printing seat to print characters at any position on the circuit board. At the same time, the visual recognition lens recognizes the characters printed by the printing head and compares them with the pre-stored ones in the control system in real time. When the characters printed on the circuit board do not meet the printing requirements, the control system starts the vertical cylinder, and the piston rod of the vertical cylinder drives the cleaning box close to the circuit board, and the printing seat moves freely on the circuit board. At the same time, the control system starts the scraping motor, and the output shaft of the scraping motor drives the scraping wheel to rotate. The scraper on the rotating scraping wheel scrapes the characters printed on the circuit board, so as to facilitate The subsequent printing head prints the corresponding characters on the position where the characters were removed on the circuit board again, and then the visual recognition lens recognizes and determines the re-printed characters again until the characters meet the printing requirements. This process does not require manual inspection, and at the same time reduces the subsequent screening of circuit boards that fail to print, which is beneficial to improving the printing efficiency of circuit boards. When the piston rod of the vertical cylinder drives the cleaning box to approach the circuit board, the buffer plate first approaches the circuit board until it abuts against the circuit board. As the cleaning box continues to approach the circuit board, the compression spring is compressed. At the same time, the end of the buffer rod facing away from the buffer plate gradually approaches the sensing end of the pressure sensor until the buffer rod triggers the pressure sensor. At this time, the control system stops the vertical cylinder. At this time, the scraper on the rotating scraper wheel is attached to the surface of the circuit board, so as to scrape the characters printed on the surface of the circuit board, while reducing the possibility of damage to the protective layer on the surface of the circuit board.

[0008] Optionally, the conveying assembly includes a fixed slide rail and an adjustable slide rail with the same structure, the adjustable slide rail is slidably set on the frame, and the frame is provided with a distance adjusting member for adjusting the distance between the fixed slide rail and the adjustable slide rail. A plurality of rollers are rotatably set on the fixed slide rail and the adjustable slide rail, and the plurality of rollers are arranged along the length direction of the adjustable slide rail. A driving belt is commonly wound around the plurality of rollers. A conveying motor electrically connected to a control system is provided on the adjustable slide rail, and one of the rollers is coaxially set on the output shaft of the conveying motor.

[0009] By adopting the above technical solution, workers adjust the distance between the adjustable slide rail and the fixed slide rail through the distance adjusting piece according to the width of the circuit board. Both sides of the circuit board will be placed on the driving belt, and then the control system starts the conveying motor. The output shaft of the conveying motor drives the driving belt to rotate through the roller, so that the circuit board placed on the driving belt is conveyed along the length direction of the adjusting slide rail, which is conducive to improving the accuracy of conveying the circuit board.

[0010] Optionally, the distance adjusting component includes mounting plates arranged on both sides of the adjusting slide rail in the length direction, a guide rod is arranged between the two mounting plates, and a distance adjusting screw rod parallel to the axis of the guide rod is rotatably arranged between the two mounting plates, an adjusting motor electrically connected to the control system is arranged on one of the mounting plates, the distance adjusting screw rod is coaxially arranged on the output shaft of the adjusting motor, a driving block is threadedly connected to the distance adjusting screw rod, the driving block is detachably arranged on the adjusting slide rail, and the fixed slide rail is arranged on one of the mounting plates.

[0011] By adopting the above technical solution, workers start the adjusting motor through the control system according to the size of the circuit board. The output shaft of the adjusting motor drives the pitch adjusting screw to rotate. Under the restriction and guidance of the guide rod, the driving block drives the adjusting slide rail to move along the length direction of the pitch adjusting screw to adapt to circuit boards of different sizes.

[0012] Optionally, the positioning assembly includes a pressure plate arranged on the adjusting slide rail and the fixed slide rail, the pressure plate is located above the driving belt, a lifting cylinder electrically connected to the control system is arranged on the frame, a positioning block is arranged on the piston rod of the lifting cylinder, and the positioning block is used to press the circuit board onto the pressure plate.

[0013] By adopting the above technical solution, when the driving belt drives the circuit board to move to the processing position, the control system starts the lifting cylinder, and the piston rod of the lifting cylinder drives the positioning block to rise, thereby lifting the circuit board off the driving belt and pressing it against the pressure plate, thereby reducing the possibility of movement of the circuit board during the printing process.

[0014] Optionally, the frame is provided with an exhaust fan electrically connected to a control system, the exhaust fan is connected to the interior of the cleaning box via a hose, and the hose is connected to a storage box.

[0015] By adopting the above technical solution, when the control system starts the scraping motor, the control system also starts the exhaust fan, and the exhaust fan draws the scraped character waste on the circuit board into the storage box through the hose, thereby reducing the impact of the scraped character waste on the cleanliness of the circuit board surface, which is beneficial to reducing the impact on the subsequent processing of the circuit board.

[0016] In the second aspect, the present application provides a method for processing an automatic printing device with a visual recognition structure, which adopts the following technical solution: A processing method of an automatic printing device with a visual recognition structure comprises the following steps: S1, the conveying component conveys the circuit board to the rack, and the positioning component fixes the position of the circuit board; S2, the driving assembly drives the printing seat to move freely above the circuit board, and the printing head prints ink on the circuit board; S3, the visual recognition lens recognizes characters printed on the circuit board; S4. When the characters printed on the circuit board are unclear, the clearing component clears the characters printed on the circuit board and re-prints the corresponding characters at the cleared positions on the circuit board.

[0017] By adopting the above technical solution, the pass rate of characters printed on the circuit board can be tested in real time, and characters that do not meet the requirements can be removed in time. At the same time, the corresponding characters pre-stored in the control system can be re-printed, which is conducive to reducing the difficulty and difficulty of subsequent manual inspection and improving the efficiency and pass rate of circuit board printing.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: The conveying component conveys the circuit board to the position to be processed on the frame, and is fixed by the positioning component at the same time. Then the driving component drives the printing seat to move freely above the circuit board, so that the printing head prints characters on the circuit board. At the same time, the visual recognition lens recognizes the characters printed by the printing head and compares them with the pre-stored ones in the control system in real time. When the characters printed on the circuit board do not meet the printing requirements, the cleaning component removes the characters printed on the circuit board, and then the printing head prints the corresponding characters on the position where the characters are removed on the circuit board again. Then the visual recognition lens recognizes and determines the re-printed characters again until the characters meet the printing requirements. This process does not require manual inspection, and reduces the subsequent screening of circuit boards that fail to print, which is conducive to improving the printing efficiency of circuit boards. When the visual recognition lens recognizes that the characters printed on the circuit board do not meet the requirements, the control system starts the vertical cylinder, the piston rod of the vertical cylinder drives the cleaning box close to the circuit board, and the printing seat moves freely on the circuit board, and the control system starts the scraping motor at the same time, the output shaft of the scraping motor drives the scraping wheel to rotate, and the scraper on the rotating scraping wheel scrapes the characters printed on the circuit board, so as to facilitate the subsequent re-printing of characters; When the piston rod of the vertical cylinder drives the cleaning box to approach the circuit board, the buffer plate first approaches the circuit board until it abuts against the circuit board. As the cleaning box continues to approach the circuit board, the compression spring is compressed. At the same time, the end of the buffer rod facing away from the buffer plate gradually approaches the sensing end of the pressure sensor until the buffer rod triggers the pressure sensor. At this time, the control system stops the vertical cylinder. At this time, the scraper on the rotating scraping wheel is attached to the surface of the circuit board, thereby scraping off the characters printed on the surface of the circuit board, while reducing the possibility of damaging the protective layer on the surface of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0020] Figure 2 It is a cross-sectional view used to illustrate the positional relationship among the printing head, the cleaning box and the lifting cylinder in the embodiment of the present application.

[0021] Figure 3 It is a structural schematic diagram of the positional relationship among the cleaning box, the buffer plate and the pressure sensor in the embodiment of the present application.

[0022] Description of reference numerals: 1, circuit board; 2, frame; 3, conveying assembly; 31, fixed slide rail; 32, adjustable slide rail; 33, distance adjusting member; 331, mounting plate; 332, guide rod; 333, distance adjusting screw rod; 334, adjusting motor; 335, driving block; 34, roller; 35, driving belt; 36, conveying motor; 4, positioning assembly; 41, pressing plate; 42, lifting cylinder; 43, positioning block; 5, printing seat; 6, printing head; 7, driving assembly; 71 , horizontal slide rail; 711, frame; 712, sliding screw; 713, slider; 714, sliding motor; 72, longitudinal slide rail; 73, vertical slide rail; 8, visual recognition lens; 9, cleaning component; 91, vertical cylinder; 92, cleaning box; 93, scraper wheel; 94, scraper; 95, scraper motor; 10, exhaust fan; 11, hose; 12, storage box; 13, buffer rod; 14, buffer plate; 15, compression spring; 16, pressure sensor; 17, baffle. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-Figure 3 This application is described in further detail. Example

[0024] The embodiment of the present application discloses an automatic printing device with a visual recognition structure.

[0025] Reference Figure 1 An automatic printing device with a visual recognition structure includes a frame 2, on which a conveying assembly 3 for conveying a circuit board 1 is arranged, and the conveying assembly 3 includes a fixed slide rail 31 and an adjusting slide rail 32 with the same structure, and the adjusting slide rail 32 is slidably arranged on the frame 2, and a distance adjusting member 33 for adjusting the distance between the fixed slide rail 31 and the adjusting slide rail 32 is arranged on the frame 2.

[0026] Reference Figure 1 , Figure 2 and Figure 3 The distance adjusting member 33 includes mounting plates 331 bolted to both sides of the length direction of the adjusting slide rail 32, a horizontal guide rod 332 is arranged between the two mounting plates 331, a distance adjusting screw rod 333 parallel to the axis of the guide rod 332 is rotatably connected between the two mounting plates 331, an adjusting motor 334 electrically connected to the control system is bolted to one of the mounting plates 331, and the distance adjusting screw rod 333 is coaxially bolted to the output shaft of the adjusting motor 334.

[0027] Reference Figure 1 , Figure 2 and Figure 3 A driving block 335 is threadedly connected to the pitch adjusting screw rod 333, and the driving block 335 is bolted to the adjusting slide rail 32. The fixed slide rail 31 is welded to one of the mounting plates 331. A plurality of rollers 34 are rotatably connected to the fixed slide rail 31 and the adjusting slide rail 32. The plurality of rollers 34 are arranged along the length direction of the adjusting slide rail 32, and a driving belt 35 is commonly wound around the plurality of rollers 34. A conveying motor 36 electrically connected to the control system is bolted to the adjusting slide rail 32, and one of the rollers 34 is coaxially bolted to the output shaft of the conveying motor 36.

[0028] Reference Figure 1 , Figure 2 and Figure 3 A positioning assembly 4 for positioning the circuit board 1 is arranged on the frame 2. The positioning assembly 4 includes a pressure plate 41 bolted to the adjusting slide rail 32 and the fixed slide rail 31. The pressure plate 41 is located above the driving belt 35. A lifting cylinder 42 electrically connected to the control system is bolted to the frame 2. A positioning block 43 is welded on the piston rod of the lifting cylinder 42. The positioning block 43 is used to press the circuit board 1 onto the pressure plate 41.

[0029] The worker starts the adjusting motor 334 through the control system according to the size of the circuit board 1. The output shaft of the adjusting motor 334 drives the distance adjusting screw 333 to rotate. Under the guiding and limiting action of the guide rod 332, the driving block 335 drives the adjusting slide rail 32 to slide along the axial direction of the guide rod 332 until the distance between the fixed slide rail 31 and the adjusting slide rail 32 meets the size requirements of the circuit board 1.

[0030] The loading device places the circuit board 1 on the driving belt 35 on the fixed slide rail 31 and the adjusting slide rail 32, and then the control system starts the conveying motor 36 on the fixed slide rail 31 and the adjusting slide rail 32 at the same time. The conveying motor 36 drives the driving belt 35 to rotate through the roller 34, so as to convey the circuit board 1 to the processing position on the frame 2, and then the control system starts the lifting cylinder 42. The piston rod of the lifting cylinder 42 extends out and presses the circuit board 1 onto the pressure plate 41 through the positioning block 43. At this time, the circuit board 1 is separated from the driving belt 35.

[0031] Reference Figure 1 , Figure 2 and Figure 3 A printing seat 5 is slidably arranged on the frame 2, a printing head 6 electrically connected to the control system is bolted to the printing seat 5, a visual recognition lens 8 electrically connected to the control system is bolted to the printing seat 5, the visual recognition lens 8 is used to recognize the characters printed on the circuit board 1, and a driving component 7 for driving the printing seat 5 to slide is arranged on the frame 2.

[0032] Reference Figure 1 , Figure 2 and Figure 3 The driving assembly 7 includes a transverse slide rail 71, a longitudinal slide rail 72 and a vertical slide rail 73 with the same structure but different lengths. The transverse slide rail 71 is arranged along the X-axis direction, the longitudinal slide rail 72 is arranged along the Y-axis direction, and the vertical slide rail 73 is arranged along the Z-axis direction. The transverse slide rail 71, the longitudinal slide rail 72 and the vertical slide rail 73 are all above the pressure plate 41.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The transverse slide rail 71 includes a frame 711 bolted to the frame body 2, a horizontal sliding screw 712 is rotatably connected to the frame 711, a slider 713 is threadedly connected to the sliding screw 712, a sliding motor 714 electrically connected to the control system is bolted to the frame 711, the sliding screw 712 is coaxially bolted to the output shaft of the sliding motor 714, the frame 711 of the longitudinal slide rail 72 is bolted to the slider 713 of the transverse slide rail 71, the frame 711 of the vertical slide rail 73 is bolted to the slider 713 of the longitudinal slide rail 72, and the printing seat 5 is bolted to the slider 713 of the vertical slide rail 73.

[0034] The control system starts the sliding motor 714 on the transverse slide rail 71, the longitudinal slide rail 72 and the vertical slide rail 73, and drives the sliding screw 712 to rotate through the sliding motor 714, so that the slider 713 slides along the axial direction of the sliding screw 712, so that the printing seat 5 can move freely above the circuit board 1, and then the printing seat 5 drives the printing head 6 to print characters on the upper surface of the circuit board 1. At the same time, the visual recognition lens 8 feeds back the characters printed on the circuit board 1 to the control system, and the control system determines whether the printed characters are qualified through the character style pre-stored at the printing position.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A cleaning component 9 is arranged on the printing seat 5. The cleaning component 9 is used to remove the characters printed on the circuit board 1. The cleaning component 9 includes a vertical cylinder 91 bolted to the printing seat 5 and electrically connected to the control system. A cleaning box 92 is bolted to the piston rod of the vertical cylinder 91. The cleaning box 92 is hollow inside and open to one side of the circuit board 1. A scraping wheel 93 is rotatably connected to the cleaning box 92. A plurality of scrapers 94 are bolted to the scraping wheel 93 evenly along the circumference of its axis.

[0036] Reference Figure 1 , Figure 2 and Figure 3A scraper motor 95 electrically connected to the control system is bolted to the cleaning box 92, and a scraper wheel 93 is coaxially bolted to the output shaft of the scraper motor 95. A baffle 17 is welded to the cleaning box 92, and a buffer rod 13 is vertically slidably connected to the baffle 17. A buffer plate 14 is welded to the buffer rod 13. The buffer plate 14 is located at the open end of the cleaning box 92, and a compression spring 15 is supported between the buffer plate 14 and the baffle 17. The buffer plate 14 is used to abut the circuit board 1.

[0037] Reference Figure 1 , Figure 2 and Figure 3 A pressure sensor 16 electrically connected to the control system is bolted to the cleaning box 92. The end of the buffer rod 13 facing away from the buffer plate 14 is used to abut against the sensing end of the pressure sensor 16. When the buffer rod 13 triggers the pressure sensor 16, the scraper 94 on the rotating scraping wheel 93 is attached to the upper surface of the circuit board 1. An exhaust fan 10 electrically connected to the control system is arranged on the frame 2. The exhaust fan 10 is connected to the internal cavity of the cleaning box 92 by a hose 11, and the hose 11 is connected to the storage box 12.

[0038] When the characters printed on the circuit board 1 do not meet the requirements, the control system starts the vertical cylinder 91, and the piston rod of the vertical cylinder 91 extends to make the cleaning box 92 close to the circuit board 1 until the buffer plate 14 abuts against the upper surface of the circuit board 1. As the cleaning box 92 continues to approach the circuit board 1, the compression spring 15 is deformed, and the end of the buffer rod 13 facing away from the buffer plate 14 continues to approach the sensing end of the pressure sensor 16 until the buffer rod 13 triggers the pressure sensor 16.

[0039] At this time, the control system stops the vertical cylinder 91, and starts the scraping motor 95 and the exhaust fan 10 at the same time. The output shaft of the scraping motor 95 drives the scraping wheel 93 to rotate, and the scraper 94 on the rotating scraping wheel 93 scrapes the characters printed on the circuit board 1, and the scraped character waste is sucked into the storage box 12 by the exhaust fan 10 through the hose 11. At the same time, the control system will start the sliding motor 714 on the horizontal slide rail 71 and the longitudinal slide rail 72 to completely scrape off the printed characters.

[0040] Afterwards, the control system controls the printing seat 5 to move again, so that the printing seat 5 drives the printing head 6 to repeat printing the corresponding characters on the circuit board 1 at the position where the characters were scraped off, and then the visual recognition lens 8 feeds back the characters printed again on the circuit board 1 to the control system until the fedback character information meets the character style requirements pre-stored in the control system.

[0041] The implementation principle of Example 1 is as follows: a worker starts the adjusting motor 334 through the control system according to the size of the circuit board 1, and the output shaft of the adjusting motor 334 drives the distance adjusting screw 333 to rotate. Under the guiding and limiting action of the guide rod 332, the driving block 335 drives the adjusting slide rail 32 to slide along the axial direction of the guide rod 332 until the distance between the fixed slide rail 31 and the adjusting slide rail 32 meets the size requirements of the circuit board 1.

[0042] The loading device places the circuit board 1 on the driving belt 35 on the fixed slide rail 31 and the adjusting slide rail 32, and then the control system starts the conveying motor 36 on the fixed slide rail 31 and the adjusting slide rail 32 at the same time. The conveying motor 36 drives the driving belt 35 to rotate through the roller 34, so as to convey the circuit board 1 to the processing position on the frame 2, and then the control system starts the lifting cylinder 42. The piston rod of the lifting cylinder 42 extends out and presses the circuit board 1 onto the pressure plate 41 through the positioning block 43. At this time, the circuit board 1 is separated from the driving belt 35.

[0043] The control system starts the sliding motor 714 on the transverse slide rail 71, the longitudinal slide rail 72 and the vertical slide rail 73, and drives the sliding screw 712 to rotate through the sliding motor 714, so that the slider 713 slides along the axial direction of the sliding screw 712, so that the printing seat 5 can move freely above the circuit board 1, and then the printing seat 5 drives the printing head 6 to print characters on the upper surface of the circuit board 1. At the same time, the visual recognition lens 8 feeds back the characters printed on the circuit board 1 to the control system, and the control system determines whether the printed characters are qualified through the character style pre-stored at the printing position.

[0044] When the characters printed on the circuit board 1 do not meet the requirements, the control system starts the vertical cylinder 91, and the piston rod of the vertical cylinder 91 extends to make the cleaning box 92 close to the circuit board 1 until the buffer plate 14 abuts against the upper surface of the circuit board 1. As the cleaning box 92 continues to approach the circuit board 1, the compression spring 15 is deformed, and the end of the buffer rod 13 facing away from the buffer plate 14 continues to approach the sensing end of the pressure sensor 16 until the buffer rod 13 triggers the pressure sensor 16.

[0045] At this time, the control system stops the vertical cylinder 91, and starts the scraping motor 95 and the exhaust fan 10 at the same time. The output shaft of the scraping motor 95 drives the scraping wheel 93 to rotate, and the scraper 94 on the rotating scraping wheel 93 scrapes the characters printed on the circuit board 1, and the scraped character waste is sucked into the storage box 12 by the exhaust fan 10 through the hose 11. At the same time, the control system will start the sliding motor 714 on the horizontal slide rail 71 and the longitudinal slide rail 72 to completely scrape off the printed characters.

[0046] Afterwards, the control system controls the printing seat 5 to move again, so that the printing seat 5 drives the printing head 6 to repeat printing the corresponding characters on the circuit board 1 at the position where the characters were scraped off, and then the visual recognition lens 8 feeds back the characters printed again on the circuit board 1 to the control system until the fedback character information meets the character style requirements pre-stored in the control system. Example

[0047] Embodiment 2 of the present application discloses a method for processing an automatic printing device with a visual recognition structure, comprising the following steps: S1. The worker starts the adjustment motor 334 according to the size of the circuit board 1 and through the control system. The adjustment motor 334 drives the distance adjustment screw 333 to rotate, and the driving block 335 drives the adjustment slide rail 32 to slide along the axis direction of the guide rod 332, so as to adjust the distance between the fixed slide rail 31 and the adjustment slide rail 32; S2, the circuit board 1 is placed on the driving belt 35 on the fixed slide rail 31 and the adjustable slide rail 32, and the control system simultaneously starts the conveying motor 36 on the fixed slide rail 31 and the adjustable slide rail 32, and the conveying motor 36 drives the driving belt 35 to rotate through the roller 34, so as to convey the circuit board 1 to the processing position on the frame 2; S3, the control system starts the lifting cylinder 42, the piston rod of the lifting cylinder 42 extends and presses and fixes the circuit board 1 on the pressing plate 41 through the positioning block 43; S4, the control system starts the sliding motor 714 on the horizontal slide rail 71, the longitudinal slide rail 72 and the vertical slide rail 73, so that the printing seat 5 drives the printing head 6 to move freely above the circuit board 1, and prints characters on the surface of the circuit board 1 at the same time; S5, the visual recognition lens 8 feeds back the characters printed on the circuit board 1 to the control system, and compares them with the character patterns pre-stored at the printing position in the control system; S6, when the character pattern is qualified, the printing seat 5 drives the printing head 6 to move to the next printing position on the circuit board 1; S7, when the character style is unqualified, the control system starts the vertical cylinder 91, and the piston rod of the vertical cylinder 91 drives the cleaning box 92 to approach the circuit board 1 until the pressure sensor 16 is triggered, at which time the vertical cylinder 91 stops working; S8, the control system starts the scraping motor 95 and the exhaust fan 10 at the same time, the output shaft of the scraping motor 95 drives the scraping wheel 93 to rotate, and the scraper 94 on the rotating scraping wheel 93 scrapes the characters printed on the circuit board 1, and at the same time, the scraped character waste residue is sucked into the storage box 12 by the exhaust fan 10 through the hose 11, and the control system controls the printing seat 5 to move again until the printed characters are completely scraped off; S9, the control system controls the printing seat 5 to move again, and the printing seat 5 drives the printing head 6 to print the character scraping position on the circuit board 1 again. At the same time, the visual recognition lens 8 feeds back the character style printed again to the control system until it meets the requirements of the printed characters. The printing seat 5 drives the printing head 6 to move to the next printing position on the circuit board 1.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic printing device with a visual recognition structure, characterized in that: The invention comprises a frame (2), wherein the frame (2) is provided with a conveying assembly (3) for conveying a circuit board (1), the frame (2) is provided with a positioning assembly (4) for positioning the circuit board (1), the frame (2) is provided with a printing seat (5) for sliding, the printing seat (5) is provided with a printing head (6) electrically connected to a control system, the frame (2) is provided with a driving assembly (7) for driving the printing seat (5) to slide, the driving assembly (7) comprises a transverse slide rail (71), a longitudinal slide rail (72) and a vertical slide rail (73) of the same structure but different lengths, the transverse slide rail (71) is arranged along the X axis, the longitudinal slide rail (72) is arranged along the Y axis, and the vertical slide rail (73) is arranged along the Y axis. ) are arranged along the Z axis, the transverse slide rail (71) comprises a frame (711) arranged on the frame body (2), a sliding screw (712) is rotatably arranged on the frame (711), a slider (713) is threadedly connected to the sliding screw (712), a sliding motor (714) electrically connected to a control system is arranged on the frame (711), the sliding screw (712) is coaxially arranged on the output shaft of the sliding motor (714), the frame (711) of the longitudinal slide rail (72) is arranged on the slider (713) of the transverse slide rail (71), and the frame (711) of the vertical slide rail (73) is arranged on the slider (713) of the longitudinal slide rail (72). 13), the printing seat (5) is arranged on the slider (713) of the vertical slide rail (73), the printing seat (5) is provided with a visual recognition lens (8) electrically connected to the control system, the visual recognition lens (8) is used to recognize the characters printed on the circuit board (1), the printing seat (5) is provided with a cleaning component (9), the cleaning component (9) is used to remove the characters printed on the circuit board (1), the cleaning component (9) includes a vertical cylinder (91) arranged on the printing seat (5) and electrically connected to the control system, a cleaning box (92) is provided on the piston rod of the vertical cylinder (91), the cleaning box (92) is hollow inside and open toward one side of the circuit board (1), The cleaning box (92) is rotatably provided with a scraping wheel (93), and the scraping wheel (93) is provided with a plurality of scrapers (94) along the circumference of its axis. The cleaning box (92) is provided with a scraping motor (95) electrically connected to the control system, and the scraping wheel (93) is coaxially arranged on the output shaft of the scraping motor (95). A buffer rod (13) is slidably provided at the open end of the cleaning box (92), and a buffer plate (14) is provided on the buffer rod (13). A compression spring (15) is supported between the buffer plate (14) and the cleaning box (92), and the buffer plate (14) is used to abut against the circuit board (1). The cleaning box (92) is provided with a pressure sensor (16) electrically connected to the control system.One end of the buffer rod (13) facing away from the buffer plate (14) is used to abut against the sensing end of the pressure sensor (16); when the buffer rod (13) triggers the pressure sensor (16), the scraper (94) on the scraping wheel (93) is attached to the surface of the circuit board (1).

2. The automatic printing device with a visual recognition structure according to claim 1, characterized in that: The conveying assembly (3) comprises a fixed slide rail (31) and an adjusting slide rail (32) of the same structure. The adjusting slide rail (32) is slidably arranged on the frame (2). The frame (2) is provided with a distance adjusting member (33) for adjusting the distance between the fixed slide rail (31) and the adjusting slide rail (32). A plurality of rollers (34) are rotatably arranged on both the fixed slide rail (31) and the adjusting slide rail (32). The plurality of rollers (34) are arranged along the length direction of the adjusting slide rail (32). A driving belt (35) is commonly wound around the plurality of rollers (34). A conveying motor (36) electrically connected to a control system is arranged on the adjusting slide rail (32), and one of the rollers (34) is coaxially arranged on an output shaft of the conveying motor (36).

3. The automatic printing device with a visual recognition structure according to claim 2 is characterized in that: The distance adjusting member (33) comprises mounting plates (331) arranged on both sides of the length direction of the adjusting slide rail (32); a guide rod (332) is arranged between the two mounting plates (331); a distance adjusting screw rod (333) parallel to the axis of the guide rod (332) is rotatably arranged between the two mounting plates (331); an adjusting motor (334) electrically connected to a control system is arranged on one of the mounting plates (331); the distance adjusting screw rod (333) is coaxially arranged on the output shaft of the adjusting motor (334); a driving block (335) is threadedly connected to the distance adjusting screw rod (333); the driving block (335) is detachably arranged on the adjusting slide rail (32); and the fixed slide rail (31) is arranged on one of the mounting plates (331).

4. The automatic printing device with a visual recognition structure according to claim 3 is characterized in that: The positioning assembly (4) comprises a pressure plate (41) arranged on the adjusting slide rail (32) and the fixed slide rail (31), the pressure plate (41) being located above the driving belt (35), the frame (2) being provided with a lifting cylinder (42) electrically connected to a control system, the piston rod of the lifting cylinder (42) being provided with a positioning block (43), the positioning block (43) being used to press the circuit board (1) onto the pressure plate (41).

5. The automatic printing device with a visual recognition structure according to claim 1, characterized in that: The frame (2) is provided with an exhaust fan (10) electrically connected to a control system. The exhaust fan (10) is connected to the inside of the cleaning box (92) via a hose (11), and the hose (11) is connected to a storage box (12).

6. A method for processing an automatic printing device with a visual recognition structure according to any one of claims 1 to 5, characterized in that: The steps include: S1, the conveying component (3) conveys the circuit board (1) to the frame (2), and the circuit board is fixed in position by the positioning component (4); S2, the driving component (7) drives the printing seat (5) to move freely above the circuit board (1), and at the same time the printing head (6) prints ink on the circuit board (1); S3, the visual recognition lens (8) recognizes characters printed on the circuit board (1); S4. When the characters printed on the circuit board (1) are unclear, the clearing component (9) clears the characters printed on the circuit board (1) and reprints the corresponding characters at the cleared position on the circuit board (1).

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