Visual printing machine with steel mesh cleaning function

Abstract

The utility model discloses a visual printing machine with a steel mesh cleaning function, which is applied to the field of PCB solder paste printing. Solder paste printing positioning is more accurate by arranging the correcting mechanism, the steel mesh cleaning mechanism is arranged to clean the steel mesh, so that the steel mesh is cleaned in time, defective products such as tin connection short circuit and pseudo soldering are reduced, the workload is reduced, the working efficiency is improved, and therefore the purposes of printing precision, printing efficiency and high percent of pass are achieved. By rotating a rotating head, the rotating head rotates to drive a rotating shaft to rotate, the rotating shaft rotates to drive a gear to rotate, the gear rotates to drive a toothed bar to move, and the toothed bar moves to drive a clamping rod to move, so that the clamping rod is separated from a clamping hole, and the cutter head is taken down for replacement; the clamping rod is clamped with the clamping hole under the action of the spring, and the purpose of conveniently replacing the tool bit can be achieved in a mode of fixing the tool bit, so that the workload is reduced, and the replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of PCB solder paste printing, in particular to a visual printer with a steel mesh cleaning function. Background Art

[0002] After searching for Chinese patents, the publication number is: CN219960966U, a PCB automatic solder paste printing device, including a device body, the top surface of the device body is respectively provided with a first fixed frame and a second fixed frame, and the first fixed frame and the second fixed frame are provided with a first extrusion plate inside. In the utility model, by setting the first extrusion plate, the first extrusion spring, the first support plate, the second extrusion plate, the second extrusion spring, the second support plate, the limit plate and the pull rod for coordinated use, it is convenient to fix the PCB, so that during operation, the staff pulls the first extrusion plate through the pull rod, and then the first extrusion plate compresses the first extrusion spring, and then the distance between the first extrusion plate and the second extrusion plate is expanded, and then the staff puts one end of the PCB on the second support plate, and then slowly releases the pull rod, and then under the elasticity of the first extrusion spring, the first extrusion plate and the first support plate cooperate to fix the other end of the PCB, thereby completing the fixation of the PCB.

[0003] The existing printers without vision printers have insufficient precision in the solder paste printing area positioning, and the pads are not fully covered with solder paste during printing, resulting in subsequent defective products such as misalignment, cold soldering or tin short circuits in patch components; at the same time, after printing solder paste multiple times, residual solder paste gradually appears at the bottom of the steel mesh, causing subsequent brushing of densely packed component PCBs to easily cause solder paste adhesion, and solder paste appears in non-pad areas, which in turn leads to defective products such as short circuits. In order to solve the above problems, we propose a visual printer with steel mesh cleaning. Utility Model Content

[0004] The utility model aims to provide a visual printing machine with a steel screen cleaning function, which has the advantages of high printing accuracy, efficiency and qualified rate.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a steel screen cleaning visual printing machine, comprising a shell, characterized in that: a machine table is bolted to the inner wall of the shell, a computer system is installed on the surface of the machine table, a platform lifting mechanism is installed on the top of the machine table, a feeding plate and guide rail adjustment mechanism is installed on the top of the platform lifting mechanism, a correction mechanism is installed on the top of the machine table, and the correction mechanism is located at the bottom of the platform lifting mechanism, a back plate lifting mechanism is installed on the top of the machine table, a cleaning liquid spraying mechanism is installed on the top of the machine table, a steel screen cleaning mechanism is installed on the surface of the cleaning liquid spraying mechanism, and a The camera shooting mechanism comprises a steel mesh fixing mechanism installed on the surface of the back plate lifting mechanism, a scraper mechanism installed on the surface of the back plate lifting mechanism, and the scraper mechanism is located at the top of the steel mesh fixing mechanism, a fixing seat is bolted to the bottom of the scraper mechanism, a cutter head is slidably sleeved inside the fixing seat, a rotating shaft is rotatably connected to the inner wall of the fixing seat, a gear is fixedly sleeved on the surface of the rotating shaft, a gear is meshed on the surface of the gear, a clamping rod is bolted to one end of the gear rod, a clamping hole is provided on the surface of the cutter head, and one end of the clamping rod is clamped to the clamping hole, a spring is provided between the clamping rod and the inner wall of the fixing seat, and a rotating head is bolted to one end of the rotating shaft.

[0006] By adopting the above technical scheme, the solder paste printing positioning is more accurate by setting a correction mechanism, and the steel mesh cleaning mechanism is set to clean the steel mesh, so that the steel mesh can be cleaned in time, and the production of defective products such as tin short circuit and cold solder joint is reduced, the workload is reduced, and the work efficiency is improved, so as to achieve the purpose of high printing accuracy, efficiency and qualified rate, and improve the printing efficiency. By rotating the rotating head, the rotation of the rotating head drives the rotation of the rotating shaft, the rotation of the rotating shaft drives the rotation of the gear, the rotation of the gear drives the gear rod to move, and the movement of the gear rod drives the clamping rod to move, so that the clamping rod and the clamping hole are disengaged, and the cutter head is removed and replaced. After replacement, the clamping rod is clamped with the clamping hole under the action of the spring, and the cutter head is fixed in a way that can achieve the purpose of facilitating the replacement of the cutter head, reduce the workload, and improve the efficiency of replacement.

[0007] The utility model is further configured as follows: the platform lifting mechanism includes a fixed plate, the fixed plate is installed on the surface of the machine platform, a telescopic rod is installed on the top of the fixed plate, a fixed platform is bolted to the top of the telescopic rod, a top pin is installed on the top of the fixed platform, a first screw rod is installed on the bottom of the fixed platform, a platform lifting motor is installed on the bottom of the first screw rod, and the platform lifting motor is bolted to the bottom of the fixed plate.

[0008] By adopting the above technical solution, the platform can be raised and lowered by setting a platform lifting mechanism, which is convenient for use.

[0009] The utility model is further configured as follows: the plate feeding and guide rail adjustment mechanism includes a fixed frame, a second screw rod is installed between the inner walls of the fixed frame, a width adjustment motor is installed on the surface of the fixed frame, a profile guide rail is installed on the top of the fixed frame, a plate feeding motor is installed on the bottom of the profile guide rail, a belt is installed on the surface of the guide rail, and a clamping edge is installed on the top of the guide rail.

[0010] By adopting the above technical solution, a plate feeding and guide rail adjustment mechanism is provided, so that the plate feeding and guide rail adjustment are convenient and easy to use.

[0011] The utility model is further configured as follows: the correction mechanism includes a correction platform, the bottom of the correction platform is installed on the top of the machine table, and the correction platform is installed on the surface of the fixed platform, a correction Y-axis screw is installed at the bottom of the correction platform, one end of the correction Y-axis screw is installed with a Y-axis correction motor, and a correction X-axis screw is installed at the bottom of the correction platform, and one end of the correction X-axis screw is installed with an X-axis correction motor.

[0012] By adopting the above technical solution and setting a correction mechanism, the steel screen is corrected to improve the printing accuracy.

[0013] The utility model is further configured as follows: the back plate lifting mechanism includes a column, the column is installed on the top of the machine, a fixed back plate is installed on the surface of the column, a scraper moving conveyor belt is installed on the surface of the fixed back plate, a scraper guide rail is installed on the surface of the fixed back plate, a scraper moving motor is installed on the back of the fixed back plate, a scraper lifting motor is installed on the top of the machine, a third screw rod is installed on the output end of the scraper lifting motor, and the other end of the third screw rod is installed on the bottom of the fixed back plate.

[0014] By adopting the above technical solution, a backboard lifting mechanism is provided to adjust the lifting of the fixed backboard, which is convenient for use.

[0015] The utility model is further configured as follows: the cleaning liquid spraying mechanism includes a support plate, the support plate is installed on the top of the machine, a spraying moving motor is installed on the top of the support plate, a synchronous belt is installed on the bottom of the support plate, a spray head is installed on the surface of the synchronous belt, a connecting pipe is installed on the surface of the spray head, and a cleaning liquid storage pot is installed on the other end of the connecting pipe.

[0016] By adopting the above technical solution and providing a cleaning liquid spraying mechanism, it is convenient to spray the cleaning liquid.

[0017] The utility model is further configured as follows: the steel mesh cleaning mechanism includes a support frame, the support frame is installed on the top of the support plate, a cleaning cloth is installed on the surface of the support frame, an adjusting cylinder is installed on the surface of the support frame, a speed measuring rod is installed on the surface of the support frame, a recovery motor is installed on one side of the support frame, a speed measuring grid plate and a speed measuring sensor are installed on one side of the support frame, a buffer rubber is installed on the top of the support frame, and the buffer rubber is located at the bottom of the cleaning cloth.

[0018] By adopting the above technical solution and providing a steel mesh cleaning mechanism, it is convenient to clean the steel mesh.

[0019] The utility model is further configured as follows: the camera shooting mechanism includes a camera guide rail, the camera guide rail is installed on the top of the machine platform, a moving frame is installed on the top of the camera guide rail, a blocking cylinder is installed on the surface of the moving frame, a visual camera is installed on the surface of the moving frame, a camera moving Y-axis motor is installed on the surface of the moving frame, and a camera moving X-axis motor is installed on the surface of the camera guide rail.

[0020] By adopting the above technical solution and setting a camera photographing mechanism, the printing quality can be tested to ensure the printing quality.

[0021] The utility model is further configured as follows: the steel mesh fixing mechanism includes a width adjustment groove, the width adjustment groove is installed on the surface of the fixed back plate, a clamping cylinder is installed on the surface of the width adjustment groove, a fixing screw is installed between the clamping cylinder and the width adjustment groove, and the steel mesh plate is clamped between the clamping cylinders.

[0022] By adopting the above technical solution and setting a steel mesh fixing mechanism, it is easy to fix and disassemble the steel mesh plate, which is convenient for use.

[0023] The utility model is further configured as follows: the scraper mechanism includes a scraper mounting frame, the scraper mounting frame is mounted on the surface of the scraper moving guide rail, and the bottom of the scraper mounting frame is bolted to the top of the fixing seat, a right scraper adjustment motor and a left scraper adjustment motor are mounted on the surface of the scraper mounting frame, a fourth screw rod is mounted on the output ends of the right scraper adjustment motor and the left scraper adjustment motor, and a locking screw is mounted on the surface of the scraper mounting frame.

[0024] The above technical solution is adopted and a scraper mechanism is provided, which makes it easy to use.

[0025] In summary, the utility model has the following beneficial effects:

[0026] 1. The utility model provides a correction mechanism to make the solder paste printing positioning more accurate, and provides a steel mesh cleaning mechanism to clean the steel mesh, so that the steel mesh can be cleaned in time, reducing the production of defective products such as tin short circuit and cold solder joint, reducing the workload and improving the work efficiency, thereby achieving the purpose of high printing accuracy, efficiency and qualified rate, and improving the printing efficiency;

[0027] 2. The utility model rotates the rotating head, the rotation of the rotating head drives the rotating shaft to rotate, the rotation of the rotating shaft drives the gear to rotate, the rotation of the gear drives the gear rod to move, the movement of the gear rod drives the clamping rod to move, so that the clamping rod and the clamping hole are disengaged, and the cutter head is removed and replaced. After replacement, the clamping rod is clamped with the clamping hole under the action of the spring, and the cutter head is fixed in this way, which can achieve the purpose of facilitating the replacement of the cutter head, reduce the workload, and improve the efficiency of replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0029] Figure 2 It is the internal structure distribution diagram of the utility model;

[0030] Figure 3 This is a three-dimensional diagram of the platform lifting mechanism of the utility model;

[0031] Figure 4 This is a three-dimensional diagram of the feeding plate and guide rail adjustment mechanism of the utility model;

[0032] Figure 5 This is a three-dimensional diagram of the feeding plate and guide rail adjustment mechanism of the utility model;

[0033] Figure 6 This is a three-dimensional diagram of the back plate lifting mechanism of the utility model;

[0034] Figure 7 It is a three-dimensional diagram of the cleaning liquid spraying mechanism of the utility model;

[0035] Figure 8 This is a three-dimensional diagram of the steel mesh cleaning mechanism of the utility model;

[0036] Fig. 9 It is a stereogram of the photographing mechanism of the camera of the utility model;

[0037] Fig.10 This is a three-dimensional diagram of the steel mesh fixing mechanism of the utility model;

[0038] Fig.11 This is a three-dimensional diagram of the scraper mechanism of the utility model;

[0039] Fig.12 It is a partial structural sectional view of the utility model.

[0040] Reference numerals: 1, housing; 2, machine; 3, computer system; 4, platform lifting mechanism; 5, plate feeding and guide rail adjustment mechanism; 6, correction mechanism; 7, back plate lifting mechanism; 8, cleaning liquid spraying mechanism; 9, steel mesh cleaning mechanism; 10, camera shooting mechanism; 11, steel mesh fixing mechanism; 12, scraper mechanism; 13, fixing seat; 14, cutter head; 15, rotating shaft; 16, gear; 17, gear rod; 18, clamping rod; 19, clamping hole; 20 , spring; 21, rotating head; 22, fixed plate; 23, telescopic rod; 24, fixed platform; 25, ejector; 26, first screw rod; 27, platform lifting motor; 28, fixed frame; 29, second screw rod; 30, width adjustment motor; 31, profile guide rail; 32, plate feeding motor; 33, belt; 34, clamping edge; 35, correction platform; 36, correction Y-axis screw rod; 37, Y-axis correction motor; 38, correction X-axis screw rod; 39, X-axis correction motor machine; 40, column; 41, fixed back plate; 42, scraper moving conveyor belt; 43, scraper guide rail; 44, scraper moving motor; 45, scraper lifting motor; 46, third screw rod; 47, support plate; 48, spraying moving motor; 49, synchronous belt; 50, nozzle; 51, connecting pipe; 52, cleaning liquid storage pot; 53, support frame; 54, cleaning cloth; 55, adjusting cylinder; 56, speed measuring rod; 57, recovery motor; 58, speed measuring grid Grid; 59. Speed ​​sensor; 60. Buffer rubber; 61. Camera guide rail; 62. Moving frame; 63. Blocking cylinder; 64. Visual camera; 65. Camera moving Y-axis motor; 66. Camera moving X-axis motor; 67. Width adjustment slot; 68. Clamping cylinder; 69. Fixing screw; 70. Steel mesh plate; 71. Scraper mounting frame; 72. Right scraper adjustment motor; 73. Left scraper adjustment motor; 74. Fourth screw; 75. Locking screw. DETAILED DESCRIPTION

[0041] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0042] refer to Figure 1 , Figure 2 and Fig.12The invention discloses a steel screen cleaning visual printing machine, comprising a shell 1, a machine table 2 is bolted to the inner wall of the shell 1, a computer system 3 is installed on the surface of the machine table 2, a platform lifting mechanism 4 is installed on the top of the machine table 2, a feeding plate and guide rail adjustment mechanism 5 is installed on the top of the platform lifting mechanism 4, a correction mechanism 6 is installed on the top of the machine table 2, and the correction mechanism 6 is located at the bottom of the platform lifting mechanism 4, a back plate lifting mechanism 7 is installed on the top of the machine table 2, a cleaning liquid spraying mechanism 8 is installed on the top of the machine table 2, and a steel screen cleaning mechanism 9 is installed on the surface of the cleaning liquid spraying mechanism 8, and the machine A camera shooting mechanism 10 is installed on the top of the platform 2, a steel mesh fixing mechanism 11 is installed on the surface of the back plate lifting mechanism 7, a scraper mechanism 12 is installed on the surface of the back plate lifting mechanism 7, and the scraper mechanism 12 is located on the top of the steel mesh fixing mechanism 11, a fixing seat 13 is bolted to the bottom of the scraper mechanism 12, a cutter head 14 is slidably sleeved inside the fixing seat 13, a rotating shaft 15 is rotatably connected to the inner wall of the fixing seat 13, a gear 16 is fixedly sleeved on the surface of the rotating shaft 15, a gear rod 17 is meshed on the surface of the gear 16, and a clamping rod is bolted to one end of the gear rod 17 18, a clamping hole 19 is provided on the surface of the cutter head 14, and one end of the clamping rod 18 is clamped with the clamping hole 19, a spring 20 is provided between the clamping rod 18 and the inner wall of the fixing seat 13, and a rotating head 21 is bolted to one end of the rotating shaft 15. By setting the correction mechanism 6, the solder paste printing positioning is more accurate, and the steel mesh cleaning mechanism 9 is set to clean the steel mesh so that the steel mesh can be cleaned in time, reducing the generation of defective products such as tin short circuit and cold soldering, reducing the workload, and improving the work efficiency, so as to achieve the purpose of high printing accuracy, efficiency and qualified rate. The printing efficiency is improved. By rotating the rotating head 21, the rotating head 21 drives the rotating shaft 15 to rotate, the rotating shaft 15 drives the gear 16 to rotate, the gear 16 drives the gear rod 17 to move, the gear rod 17 moves and drives the clamping rod 18 to move, so that the clamping rod 18 and the clamping hole 19 are disengaged, and the cutter head 14 is removed and replaced. After replacement, the clamping rod 18 is clamped with the clamping hole 19 under the action of the spring 20. The cutter head 14 is fixed in this way, which can achieve the purpose of facilitating the replacement of the cutter head 14, reduce the workload, and improve the efficiency of replacement.

[0043] refer to Figure 2 and Figure 3 The platform lifting mechanism 4 includes a fixed plate 22, which is installed on the surface of the machine platform 2. A telescopic rod 23 is installed on the top of the fixed plate 22. A fixed platform 24 is bolted to the top of the telescopic rod 23. A top bolt of the fixed platform 24 is installed with a top pin 25. A first screw rod 26 is installed at the bottom of the fixed platform 24. A platform lifting motor 27 is installed at the bottom of the first screw rod 26. The platform lifting motor 27 is bolted to the bottom of the fixed plate 22. By setting the platform lifting mechanism 4, the platform can be lifted and lowered for easy use.

[0044] refer to Figure 2 and Figure 4The plate feeding and guide rail adjusting mechanism 5 includes a fixed frame 28, a second screw rod 29 is installed between the inner walls of the fixed frame 28, a width adjustment motor 30 is installed on the surface of the fixed frame 28, a profile guide rail 31 is installed on the top of the fixed frame 28, a plate feeding motor 32 is installed on the bottom of the profile guide rail 31, a belt 33 is installed on the surface of the guide rail, and a clamping edge 34 is installed on the top of the guide rail. By setting the plate feeding and guide rail adjusting mechanism 5, it is convenient to feed the plate and adjust the guide rail, and it is convenient to use.

[0045] refer to Figure 2 and Figure 5 The correction mechanism 6 includes a correction platform 35, the bottom of which is installed on the top of the machine table 2, and the correction platform 35 is installed on the surface of the fixed platform 24. A correction Y-axis screw rod 36 is installed at the bottom of the correction platform 35, and a Y-axis correction motor 37 is installed at one end of the correction Y-axis screw rod 36. A correction X-axis screw rod 38 is installed at the bottom of the correction platform 35, and an X-axis correction motor 39 is installed at one end of the correction X-axis screw rod 38. By setting the correction mechanism 6, the steel screen is corrected to improve the printing accuracy.

[0046] refer to Figure 2 and Figure 6 The back plate lifting mechanism 7 includes a column 40, which is installed on the top of the machine platform 2. A fixed back plate 41 is installed on the surface of the column 40, a scraper moving conveyor belt 42 is installed on the surface of the fixed back plate 41, a scraper guide rail 43 is installed on the surface of the fixed back plate 41, a scraper moving motor 44 is installed on the back of the fixed back plate 41, a scraper lifting motor 45 is installed on the top of the machine platform 2, a third screw rod 46 is installed on the output end of the scraper lifting motor 45, and the other end of the third screw rod 46 is installed on the bottom of the fixed back plate 41. By setting the back plate lifting mechanism 7, the fixed back plate 41 can be lifted and adjusted for easy use.

[0047] refer to Figure 2 and Figure 7 The cleaning liquid spraying mechanism 8 includes a support plate 47, which is installed on the top of the machine 2. A spraying moving motor 48 is installed on the top of the support plate 47, a synchronous belt 49 is installed on the bottom of the support plate 47, a spray head 50 is installed on the surface of the synchronous belt 49, a connecting pipe 51 is installed on the surface of the spray head 50, and a cleaning liquid storage pot 52 is installed on the other end of the connecting pipe 51. By setting the cleaning liquid spraying mechanism 8, it is convenient to spray the cleaning liquid.

[0048] refer to Figure 2 and Figure 8The steel mesh cleaning mechanism 9 includes a support frame 53, the support frame 53 is installed on the top of the support plate 47, a cleaning cloth 54 is installed on the surface of the support frame 53, an adjusting cylinder 55 is installed on the surface of the support frame 53, a speed measuring rod 56 is installed on the surface of the support frame 53, a recovery motor 57 is installed on one side of the support frame 53, a speed measuring grid plate 58 and a speed measuring sensor 59 are installed on one side of the support frame 53, a buffer rubber 60 is installed on the top of the support frame 53, and the buffer rubber 60 is located at the bottom of the cleaning cloth 54. By setting the steel mesh cleaning mechanism 9, it is convenient to clean the steel mesh.

[0049] refer to Figure 2 and Fig. 9 The camera shooting mechanism 10 includes a camera guide rail 61, which is installed on the top of the machine platform 2. A moving frame 62 is installed on the top of the camera guide rail 61. A blocking cylinder 63 is installed on the surface of the moving frame 62. A visual camera 64 is installed on the surface of the moving frame 62. A camera moving Y-axis motor 65 is installed on the surface of the moving frame 62. A camera moving X-axis motor 66 is installed on the surface of the camera guide rail 61. By setting the camera shooting mechanism 10, the quality of printing is detected to ensure the quality of printing.

[0050] refer to Figure 2 and Fig.10 The steel mesh fixing mechanism 11 includes a width adjustment groove 67, and the width adjustment groove 67 is installed on the surface of the fixed back plate 41. A clamping cylinder 68 is installed on the surface of the width adjustment groove 67. A fixing screw 69 is installed between the clamping cylinder 68 and the width adjustment groove 67. The steel mesh plate 70 is clamped between the clamping cylinders 68. By setting the steel mesh fixing mechanism 11, it is convenient to fix and disassemble the steel mesh plate 70, and it is convenient to use.

[0051] refer to Figure 2 and Fig.11 The scraper mechanism 12 includes a scraper mounting frame 71, which is mounted on the surface of the scraper moving guide rail, and the bottom of the scraper mounting frame 71 is bolted to the top of the fixed seat 13, and a right scraper adjustment motor 72 and a left scraper adjustment motor 73 are mounted on the surface of the scraper mounting frame 71. The output ends of the right scraper adjustment motor 72 and the left scraper adjustment motor 73 are mounted with a fourth screw rod 74, and a locking screw 75 is mounted on the surface of the scraper mounting frame 71. By setting the scraper mechanism 12, it is easy to use.

[0052] Brief description of the use process: After the equipment is ready for self-test, set the parameters according to the user manual, click the start button, and the control system enters the PCB solder paste brushing program. The operation process of the PCB solder paste brushing program is as follows: the camera X-axis motor and Y-axis motor rotate rapidly. After the camera moves to the preset position, the blocking cylinder 63 extends out to rotate the board feeding motor 32 to drive the belt 33 to rotate, and the PCB board at the entrance is sent into the equipment. When the PCB is stopped by the blocking cylinder 63, the in-place sensor senses the PCB, and the signal is transmitted back to the system. The board feeding motor 32 stops, the width adjustment motor 30 rotates, and the guide rail is driven to move in the shrinking direction through the screw rod. After the guide rail is reduced to the preset position, the width adjustment motor 30 stops rotating. At this time, the guide rail clamps the PCB, the blocking cylinder 63 retracts, and the platform lifting motor 27 rotates, and the printing platform is driven to rise through the screw rod. At this time, the ejector 25 on the platform lifts the PCB board to be flush with the top surface of the clamping edge 34, and the platform lifting motor 27 stops rotating. The camera moves to the first positioning point and the second positioning point in turn according to the preset parameters to take pictures. When the picture is transmitted back to the system, the camera returns to the origin position. The system analyzes the PCB pad position based on the image to see if there is any offset. If there is any offset, after calculating the offset, the system controls the rotation of the X-axis motor and the Y-axis motor to drive the entire printing platform to rotate, so that the PCB pad and the steel mesh pad are aligned. The back plate lifting motor rotates, and the back plate is driven down to the preset position through the screw rod. At this time, the bottom of the steel mesh is just close to the PCB surface.

[0053] The scraper lifting motor 45 rotates, and drives the scraper to descend to the preset position through the screw rod. The scraper lifting motor 45 stops rotating. At this time, the scraper is close to the steel mesh. The tin scraping motor rotates, driving the scraper from left to right. When the scraper is on the right, it moves from right to left. During the movement of the scraper, the scraper blade pushes the solder paste to fill the solder pad holes of the steel mesh. After moving into position, the right side of the scraper is in place. The sensor receives a signal. When it moves from right to left, the left side is in place. The scraper lifting motor 45 reverses to lift the scraper to the origin position. The back plate lifting motor rotates, and the back plate is raised to the origin position.

[0054] The platform lifting motor 27 rotates to lower the platform to the origin position. The guide rail width adjustment motor 30 rotates to open the guide rail to the preset position. The PCB falls back onto the belt 33. The board feeding motor 32 rotates, and the belt 33 sends the PCB to the equipment exit position. The steel mesh cleaning function can be enabled or disabled according to the PCB printing situation. It is recommended to enable the steel mesh cleaning function for PCB boards with dense components. If the steel mesh cleaning function needs to be enabled, the parameters must be set in the system to enable the steel mesh cleaning function, and the frequency of steel mesh cleaning can be achieved through the preset parameters. After the previous PCB is printed, the system will clean the steel mesh according to the system before the next PCB is fed. The preset parameters enable the steel mesh cleaning program, and the operation process is as follows: according to the preset parameters, the steel mesh cleaning liquid is usually industrial alcohol when sprayed / not sprayed. When the spray cleaning liquid is set to be enabled, the cleaning motor rotates, and the nozzle 50 is driven to move above the cleaning cloth 54 through the synchronous belt 49. At the same time, the cleaning liquid air valve is opened to spray the cleaning liquid on the cleaning cloth 54. After reaching the preset distance, the cleaning motor reverses to bring the nozzle 50 back to the original position, and the camera moves the Y-axis motor 65 to rotate, and the steel wiping structure is moved to the edge of the steel mesh through the synchronous belt 49. The back plate lifting motor rotates to lower the steel mesh to the preset position. The steel mesh cleaning cylinder extends out, driving the buffer rubber 60 and the cleaning cloth 54 to rise. At this time, the cleaning cloth 54 is close to the bottom of the steel mesh. The camera moves the Y-axis motor 65 and rotates, carrying the cleaning cloth 54 to move under the steel mesh. At the same time, the cleaning cloth 54 recovery motor 57 rotates to recover the cleaning cloth 54 that has wiped the steel mesh. When the cleaning cloth 54 moves to a preset distance, the camera Y-axis motor stops rotating, and the back plate lifting motor rotates to lift the steel mesh to a predetermined height. At the same time, the camera Y-axis quickly returns to the cleaning starting position, and the above process is repeated for a second cleaning. After the two cleanings are completed, the back plate is raised to The stencil cleaning procedure is completed, and the PCB solder paste brushing procedure begins; the rotating head 21 is rotated, and the rotating head 21 drives the rotating shaft 15 to rotate, and the rotating shaft 15 drives the gear 16 to rotate, and the gear 16 drives the gear rod 17 to move, and the gear rod 17 drives the clamping rod 18 to move, so that the clamping rod 18 is disengaged from the clamping hole 19, and the cutter head 14 is removed and replaced. After replacement, the clamping rod 18 is clamped with the clamping hole 19 under the action of the spring 20 to fix the cutter head 14, so as to achieve the purpose of facilitating the replacement of the cutter head 14.

[0055] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A machine for printing a steel screen with a cleaning vision, comprising a housing (1), characterized in that: The inner wall of the shell (1) is bolted to a machine (2), a computer system (3) is installed on the surface of the machine (2), a platform lifting mechanism (4) is installed on the top of the machine (2), a plate feeding and guide rail adjustment mechanism (5) is installed on the top of the platform lifting mechanism (4), a correction mechanism (6) is installed on the top of the machine (2), and the correction mechanism (6) is located at the bottom of the platform lifting mechanism (4), a back plate lifting mechanism (7) is installed on the top of the machine (2), a cleaning liquid spraying mechanism (8) is installed on the top of the machine (2), a steel mesh cleaning mechanism (9) is installed on the surface of the cleaning liquid spraying mechanism (8), a camera shooting mechanism (10) is installed on the top of the machine (2), a steel mesh fixing mechanism (11) is installed on the surface of the back plate lifting mechanism (7), and the back plate lifting mechanism (7) is installed on the bottom of the back plate lifting mechanism (7). A scraper mechanism (12) is installed on the surface, and the scraper mechanism (12) is located on the top of the steel mesh fixing mechanism (11); a fixing seat (13) is bolted to the bottom of the scraper mechanism (12); a cutter head (14) is slidably sleeved inside the fixing seat (13); a rotating shaft (15) is rotatably connected to the inner wall of the fixing seat (13); a gear (16) is fixedly sleeved on the surface of the rotating shaft (15); a toothed rod (17) is meshed on the surface of the gear (16); a clamping rod (18) is bolted to one end of the toothed rod (17); a clamping hole (19) is provided on the surface of the cutter head (14); one end of the clamping rod (18) is clamped to the clamping hole (19); a spring (20) is provided between the clamping rod (18) and the inner wall of the fixing seat (13); and a rotating head (21) is bolted to one end of the rotating shaft (15).

2. The strip steel screen cleaning visual printing machine according to claim 1, characterized in that: The platform lifting mechanism (4) comprises a fixed plate (22), the fixed plate (22) being mounted on the surface of the machine platform (2), a telescopic rod (23) being mounted on the top of the fixed plate (22), a fixed platform (24) being bolted to the top of the telescopic rod (23), a top pin (25) being mounted on the top of the fixed platform (24), a first screw rod (26) being mounted on the bottom of the fixed platform (24), a platform lifting motor (27) being mounted on the bottom of the first screw rod (26), and the platform lifting motor (27) being bolted to the bottom of the fixed plate (22).

3. The strip steel screen cleaning visual printing machine according to claim 1, characterized in that: The plate feeding and guide rail adjustment mechanism (5) comprises a fixed frame (28), a second screw rod (29) is installed between the inner walls of the fixed frame (28), a width adjustment motor (30) is installed on the surface of the fixed frame (28), a profile guide rail (31) is installed on the top of the fixed frame (28), a plate feeding motor (32) is installed on the bottom of the profile guide rail (31), a belt (33) is installed on the surface of the guide rail, and a clamping edge (34) is installed on the top of the guide rail.

4. The strip steel screen cleaning visual printing machine according to claim 2, characterized in that: The correction mechanism (6) comprises a correction platform (35), the bottom of the correction platform (35) being mounted on the top of the machine platform (2), and the correction platform (35) being mounted on the surface of the fixed platform (24), a correction Y-axis lead screw (36) being mounted on the bottom of the correction platform (35), a Y-axis correction motor (37) being mounted on one end of the correction Y-axis lead screw (36), and a correction X-axis lead screw (38) being mounted on the bottom of the correction platform (35), and an X-axis correction motor (39) being mounted on one end of the correction X-axis lead screw (38).

5. The steel screen cleaning visual printer according to claim 1, characterized in that: The back plate lifting mechanism (7) comprises a column (40), the column (40) being mounted on the top of the machine platform (2), a fixed back plate (41) being mounted on the surface of the column (40), a scraper moving conveyor belt (42) being mounted on the surface of the fixed back plate (41), a scraper guide rail (43) being mounted on the surface of the fixed back plate (41), a scraper moving motor (44) being mounted on the back of the fixed back plate (41), a scraper lifting motor (45) being mounted on the top of the machine platform (2), a third screw rod (46) being mounted on the output end of the scraper lifting motor (45), and the other end of the third screw rod (46) being mounted on the bottom of the fixed back plate (41).

6. The strip steel screen cleaning visual printing machine according to claim 1, characterized in that: The cleaning liquid spraying mechanism (8) comprises a support plate (47), the support plate (47) being mounted on the top of the machine platform (2), a spraying moving motor (48) being mounted on the top of the support plate (47), a synchronous belt (49) being mounted on the bottom of the support plate (47), a spray head (50) being mounted on the surface of the synchronous belt (49), a connecting pipe (51) being mounted on the surface of the spray head (50), and a cleaning liquid storage pot (52) being mounted on the other end of the connecting pipe (51).

7. The steel screen cleaning visual printing machine according to claim 6, characterized in that: The steel mesh cleaning mechanism (9) comprises a support frame (53), the support frame (53) being mounted on the top of a support plate (47), a cleaning cloth (54) being mounted on the surface of the support frame (53), an adjusting cylinder (55) being mounted on the surface of the support frame (53), a speed measuring rod (56) being mounted on the surface of the support frame (53), a recovery motor (57) being mounted on one side of the support frame (53), a speed measuring grid plate (58) and a speed measuring sensor (59) being mounted on one side of the support frame (53), a buffer rubber (60) being mounted on the top of the support frame (53), and the buffer rubber (60) being located at the bottom of the cleaning cloth (54).

8. The strip steel screen cleaning visual printing machine according to claim 1, characterized in that: The camera shooting mechanism (10) comprises a camera rail (61), wherein the camera rail (61) is mounted on the top of the machine platform (2), a movable frame (62) is mounted on the top of the camera rail (61), a blocking cylinder (63) is mounted on the surface of the movable frame (62), a visual camera (64) is mounted on the surface of the movable frame (62), a camera moving Y-axis motor (65) is mounted on the surface of the movable frame (62), and a camera moving X-axis motor (66) is mounted on the surface of the camera rail (61).

9. The steel screen cleaning visual printer according to claim 5, characterized in that: The steel mesh fixing mechanism (11) comprises a width adjustment groove (67), wherein the width adjustment groove (67) is installed on the surface of the fixed back plate (41), a clamping cylinder (68) is installed on the surface of the width adjustment groove (67), a fixing screw (69) is installed between the clamping cylinder (68) and the width adjustment groove (67), and a steel mesh plate (70) is clamped between the clamping cylinders (68).

10. The strip steel screen cleaning visual printing machine according to claim 5, characterized in that: The scraper mechanism (12) comprises a scraper mounting frame (71), the scraper mounting frame (71) is mounted on the surface of the scraper moving guide rail, and the bottom of the scraper mounting frame (71) is bolted to the top of the fixing seat (13), a right scraper adjustment motor (72) and a left scraper adjustment motor (73) are mounted on the surface of the scraper mounting frame (71), a fourth screw rod (74) is mounted at the output ends of the right scraper adjustment motor (72) and the left scraper adjustment motor (73), and a locking screw (75) is mounted on the surface of the scraper mounting frame (71).

Images