Tinning surface treatment device for PCB (Printed Circuit Board)

Abstract

The invention relates to the technical field of PCB processing, in particular to a PCB tinning surface treatment device which comprises a tinning machine, a control panel is fixedly connected to the surface of one side of the tinning machine, a placement table is fixedly connected to the surface of one side of the tinning machine, a telescopic frame is arranged on the surface of the tinning machine, a mounting frame is fixedly connected to one end of the telescopic frame, and the mounting frame is fixedly connected to the other end of the tinning machine. The tinning machine comprises a mounting frame, a tinning roller is arranged on the inner wall of the mounting frame, a cleaning device is arranged on the surface of one side of the tinning machine, and the cleaning device is used for cleaning tin liquid, soldering fluid and other substances attached to the surface of the tinning roller after each time of tinning machining, so that the tin liquid on the tinning roller is not prone to being solidified. According to the tin plating machine, tin liquid, soldering fluid and other substances attached to the tin plating roller can be effectively cleaned away in time, the tin liquid, the soldering fluid and other substances are not prone to being solidified, the follow-up tin plating machining of the PCB is not affected, the using effect and the working efficiency of the tin plating machine are improved, and the possibility that the coating quality of the PCB is poor is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board processing, and in particular to a tin-plated surface treatment device for a PCB board. Background Art

[0002] PCB board, whose Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing technology, it is called a "printed" circuit board. In the process of making PCB boards, a tin layer needs to be formed on the surface of the PCB boards. At this time, corresponding tin plating processing equipment is needed.

[0003] During the tin-plating process of traditional PCB boards, the PCB boards are first mounted on a placement table, and then liquid tin and liquid flux are poured on the surface of the PCB boards. After that, the control panel on one side of the tin-plating machine is operated to start the tin-plating machine and extend the telescopic frame on its surface. During this process, the mounting frame drives the tin-plating roller to rotate. During the driving process of the telescopic frame, the tin-plating roller contacts and rolls with the surface of the PCB board, and the liquid tin and liquid flux are evenly spread on its surface. However, in actual operation, it is found that after each time the tin-plating roller of the tin-plating machine spreads the liquid tin and liquid flux on the PCB board, a certain amount of liquid tin and liquid flux will adhere to its surface. These liquid tin and liquid flux will solidify on the surface of the tin-plating roller after long-term adhesion, thereby causing the surface of the tin-plating roller to change, affecting the next tin-plating process of the PCB board, affecting the smearing effect, resulting in an increase in the defective rate of tin-plating of the PCB board, and also affecting the use effect and work efficiency of the tin-plating machine. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that a certain amount of tin liquid and flux liquid will adhere to the surface of the tin-plating roller of a tin-plating machine after smearing the tin liquid and flux liquid on a PCB board each time, and the long-term adhesion of the tin liquid and flux liquid will solidify on the surface of the tin-plating roller, thereby causing the surface of the tin-plating roller to change, affecting the next tin-plating process of the PCB board, affecting the smearing effect, resulting in an increase in the defective rate of tin-plating of the PCB board, and also affecting the use effect and work efficiency of the tin-plating machine. A tin-plating surface treatment device for a PCB board is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: comprising a tin-plating machine, a control panel is fixedly connected to the surface of one side of the tin-plating machine, a placing table is fixedly connected to the surface of one side of the tin-plating machine, a telescopic frame is arranged on the surface of the tin-plating machine, one end of the telescopic frame is fixedly connected to the mounting frame, a tin-plating roller is arranged on the inner wall of the mounting frame, a cleaning device is arranged on the surface of one side of the tin-plating machine, the cleaning device cleans the tin liquid, flux liquid and other substances attached to the surface of the tin-plating roller after each tin-plating process, and it is not easy for the tin liquid on the tin-plating roller to solidify and affect the subsequent surface tin-plating treatment of the PCB board, and a stabilizing device is arranged on the surface of the tin-plating machine located on one side of the placing table, and the stabilizing device limits and stabilizes the position of the PCB board on the placing table, so as to facilitate the tin-plating process of the tin-plating machine and prevent the PCB board from sliding and deviating.

[0006] The effect achieved by the above components is: when using the tinning machine to perform tinning on the surface of the PCB board, first install the PCB board on the placement table, then start the stabilizing device to limit and fix the PCB board to keep the placement position of the PCB board stable, then pour the tin liquid and flux liquid on the surface of the PCB board, and then operate the control panel on one side of the tinning machine to start the tinning machine, so that the telescopic frame on the surface begins to extend, and in this process, the mounting frame will drive the tinning roller to rotate, and in the process of the telescopic frame driving, the tinning roller and the surface of the PCB board are in contact with each other. The surface is in contact and rolling, and the tin liquid and flux liquid are evenly applied on its surface. Then, after the PCB board processing is completed, the tinning roller is returned to the initial position, and the cleaning device is started at the same time to clean the tin liquid and flux liquid attached to the tinning roller. At this time, when the tinning machine is tinning the surface of the PCB board, the tin liquid and flux liquid and other substances adhering to the tinning roller can be cleaned off in time and effectively, and it is not easy to solidify and affect the subsequent tinning processing of the PCB board, thereby improving the use effect and work efficiency of the tinning machine and reducing the possibility of poor coating quality on the PCB board.

[0007] Preferably, the cleaning device comprises a cleaning frame, the four corners of the cleaning frame are respectively fixedly connected with assembled telescopic rods, the input end of the assembled telescopic rods is fixedly connected to the surface of the tinning machine, the surface of the tinning machine is fixedly connected with a hydraulic rod, the output end of the hydraulic rod is fixedly connected to the surface of the cleaning frame, the inner walls of the tinning machine are respectively penetrated and rotatably connected on the sides thereof close to each other, a brush roller is fixedly connected to the circular arc surface of the rotating rod, a first servo motor is fixedly connected to the surface of one side of the cleaning frame, the output end of the first servo motor and the circular arc surface of one end of the rotating rod are installed with the same connecting belt, a hose is connected and fixed to the bottom surface of the cleaning frame, a water pump is fixedly connected to the surface of one side of the tinning machine, and the output end of the water pump is fixedly connected to the end of the hose away from the cleaning frame.

[0008] The effects achieved by the above components are as follows: when using the tinning machine to perform tinning on the surface of the PCB board, first install the PCB board on the placement table, then start the stabilizing device to limit and fix the PCB board so that the placement position of the PCB board remains stable, then pour the tin liquid and the flux liquid on the surface of the PCB board, and then operate the control panel on one side of the tinning machine to start the tinning machine so that the telescopic frame on its surface begins to extend, and in this process, the mounting frame will drive the tinning roller to rotate, and in the process of being driven by the telescopic frame, the tinning roller will contact and roll with the surface of the PCB board, and the tin liquid and the flux liquid will be evenly applied on its surface, and then after the processing of the PCB board is completed, the tinning roller will return to the initial position, and at the same time start the cleaning device to start the hydraulic rod on one side of the cleaning frame to start running, so that the cleaning frame can be assembled in the telescopic frame. With the assistance of the rod, it approaches the tinning roller until the tinning roller is immersed in the clean water inside the cleaning frame, and at the same time, the first servo motor on one side of the cleaning frame is started to make the rotating rod rotate under the connection and drive of the connecting belt. At this time, the brush roller will rotate with the tinning roller, and they will contact and rub each other, so as to remove the tin liquid and flux liquid attached to the tinning roller. After cleaning, the cleaning frame is moved to the initial position, and the water pump is started to discharge the sewage in the cleaning frame through the hose, and then new water is injected. At this time, when the tinning machine performs surface tinning on the PCB board, the tin liquid and flux liquid lamp materials adhering to the tinning roller can be cleaned off in time and effectively, which is not easy to solidify and affect the subsequent tinning of the PCB board, thereby improving the use effect and work efficiency of the tinning machine and reducing the possibility of poor coating quality on the PCB board.

[0009] Preferably, the surface cover of the first servo motor is provided with a protective cover, and the cross-section of the protective cover is "C"-shaped.

[0010] The effect achieved by the above-mentioned components is: through the setting of the protective cover, when the first servo motor is in normal use, it is not easy for water stains from the cleaning frame to drip or splash onto the output end of the servo motor, thereby causing tin liquid, flux liquid, etc. in the sewage to adhere to the output end of the first servo motor, causing corrosion damage to it and affecting its normal use. On the other hand, it also ensures the normal use of the brush roller and extends the service life of the device.

[0011] Preferably, two mounting blocks are fixedly connected to the surface of one side of the cleaning frame, a mounting rod is rotatably connected to one side of the two mounting blocks close to each other, a scraper is fixedly connected to the arc surface of the mounting rod, torsion springs are respectively sleeved on both ends of the mounting rod located at the scraper, and the two ends of the torsion spring are respectively fixedly connected to the mounting blocks and the scraper, a positioning plate is fixedly connected to the surface of one side of the cleaning frame, and the positioning plate abuts against the surface of one side of the scraper.

[0012] The effects achieved by the above components are as follows: after the tin-plating roller cleans off the flux and tin liquid attached to the surface in the cleaning frame, the hydraulic rod is started to return the collecting frame to its initial position. During the descent of the cleaning frame, the scraper on the mounting rod will stably contact and squeeze the positioning plate at one end of the cleaning frame under the torsional force of the torsion spring. At the same time, one side surface of the scraper will just contact the arc surface of the tin-plating roller. At this time, the rotating tin-plating roller will rotate in contact and friction with the scraper, thereby scraping off the water stains attached to the tin-plating roller, thereby facilitating the subsequent tin-plating roller to tin the next PCB board.

[0013] Preferably, bearings are fixedly connected to the arc surfaces at both ends of the mounting rod, respectively, the inner ring of the bearing is fixedly connected to the mounting rod, and the outer ring of the mounting rod is fixedly connected to the inner wall of the mounting block.

[0014] The effect achieved by the above components is: through the setting of the bearing, the mounting rod is allowed to rotate with the inner wall of the mounting block, which can reduce the friction of rotation, thereby reducing the wear between the mounting rod and the mounting block, thereby ensuring the stable rotation of the mounting rod, so that the scraper can continuously and stably scrape off the water stains attached to the tinning roller.

[0015] Preferably, a protective pad is fixedly connected to a surface of one side of the scraper close to the positioning plate, and the protective pad is a rubber pad.

[0016] The effect achieved by the above components is: through the setting of the protective pad, when the tin-plating roller and the scraper come into scraping contact, the scraper will shake, so that the scraper and the positioning plate will frequently come into contact and collide. At this time, the rubber protective plate can reduce the impact force of the contact and collision, thereby ensuring the normal use of the scraper, not prone to abnormal damage, and better scraping off the water stains attached to the tin-plating roller.

[0017] Preferably, the stabilizing device comprises two mounting plates, and the two mounting plates are respectively fixedly connected to the surface of the tin-plating machine, and a screw is rotatably connected through one side of the two mounting plates close to each other, and threads in opposite directions are respectively provided on the arc surfaces at both ends of the screw, and connecting frames are respectively threadedly connected to the surface of the tin-plating machine on the arc surfaces at both ends of the screw, and the connecting frame is slidably connected to the surface of the tin-plating machine, and a fixing rod is fixedly connected to the surface of the tin-plating machine with a second servo motor, and a pulley is respectively fixedly connected to the output end of the second servo motor and the arc surface of the screw, and a transmission belt is arranged on the arc surface of the pulley.

[0018] The effect achieved by the above components is: when the PCB board is placed on the placement table and its surface is coated with tin liquid and flux liquid, the second servo motor on the tinning machine is started. Because the screw is connected and assembled with the second servo motor through the transmission belt, the operation of the second servo motor will drive the screw on the mounting plate to rotate, thereby changing the spacing between the connecting frames on the arc surfaces at both ends of the screw, until the fixing rods fixedly connected on the two connecting frames form a contact clamping with the PCB board on the placement table, thereby ensuring the stable position of the PCB board. At this time, when the tinning machine is used to tin the surface of the PCB board, the stable position of the PCB board on the placement table can be better ensured, and it is not easy for the tinning roller to contact when smearing the tin liquid and flux liquid on the PCB board, causing the PCB board to slide and deviate, affecting the tinning effect, thereby improving the use effect and work efficiency of the tinning machine.

[0019] Preferably, a limit plate is fixedly connected to the surface of the tinning machine, and the limit plate is clamped on the surface of the conveyor belt.

[0020] The effects achieved by the above components are as follows: through the setting of the limit plate, the conveyor belt assembled on the screw and the pulley of the second servo motor can be more stable and less likely to shake, resulting in the assembly detachment of the conveyor belt, thereby ensuring the rotation stability of the screw, and better limiting and fixing the PCB board on the placement table, improving the surface tinning effect of the PCB board, and further improving the finished product utilization rate of the PCB board.

[0021] Preferably, a stabilizing groove is provided on the surface of the connecting frame, and a stabilizing plate is slidably connected to the inner wall of the stabilizing groove, and the stabilizing plate is fixedly connected to the surface of the tinning machine.

[0022] The effect achieved by the above components is: through the sliding setting of the stabilizing plate and the stabilizing groove, when the connecting frame is driven by the screw to slide and displace, it can better maintain the stability of the state and is not easy to shake, so that the two fixing rods can better stably contact on both sides of the surface of the PCB board, thereby ensuring the stable position of the PCB board and improving the use effect and functionality of the stabilizing device.

[0023] Preferably, an electric telescopic rod is fixedly connected to the surface of the tinning machine, a clamping plate is fixedly connected to the output end of the electric telescopic rod, and the clamping plate is clamped on the surface of the conveyor belt.

[0024] The effect achieved by the above components is: through the arrangement of the card plate and the electric telescopic rod, when the second servo motor drives the screw rod to operate, the electric telescopic rod can be started to continuously and stably clamp the card plate and press it on the surface of the conveyor belt, so that the conveyor belt can be kept in a stable and tight state at all times, making it difficult for it to loosen. The second servo motor can better drive the two fixing rods to limit and fix the PCB board, thereby ensuring the normal use of the stabilization device.

[0025] In summary, the beneficial effects of the present invention are: In the present invention, when the tinning machine (1) performs tinning processing on the surface of a PCB board, substances such as tin liquid and soldering liquid adhering to the tinning roller (6) can be promptly and effectively cleaned off, and it is not easy for the substances to solidify and affect the subsequent tinning processing of the PCB board. The use effect and work efficiency of the tinning machine (1) are improved, and the possibility of poor coating quality on the PCB board is reduced.

[0026] In the present invention, when the tinning machine (1) is used to perform tinning processing on the surface of a PCB board, the position stability of the PCB board on the placement table (3) can be better ensured, and the tinning roller (6) is not likely to contact the tin liquid and the soldering liquid on the PCB board during the operation of evenly smearing the tin liquid and the soldering liquid on the PCB board, causing the PCB board to slide and deviate, thereby affecting the tinning effect, thereby improving the use effect and work efficiency of the tinning machine (1). BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the cleaning device of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the side three-dimensional structure; Figure 4 It is a schematic diagram of the three-dimensional structure of the cleaning frame of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of a partial three-dimensional structure; Figure 6 It is a schematic diagram of the three-dimensional structure of the scraper position of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the stabilizing device of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the side three-dimensional structure; Fig. 9 It is a schematic diagram of the three-dimensional structure at the position of the screw of the present invention.

[0028] Legend: 1. Tinning machine; 2. Control panel; 3. Placement table; 4. Telescopic frame; 5. Mounting frame; 6. Tinning roller; 7. Cleaning device; 71. Cleaning frame; 72. Assembling telescopic rod; 73. Hydraulic rod; 74. Rotating rod; 75. First servo motor; 76. Connecting belt; 77. Brush roller; 78. Hose; 79. Water pump; 710. Mounting rod; 711. Mounting block; 712. Scraper; 713. Positioning plate; 714. Torsion spring; 715. Pad; 716. Bearing; 717. Protective cover; 8. Stabilizing device; 81. Mounting plate; 82. Screw; 83. Second servo motor; 84. Pulley; 85. Conveyor belt; 86. Connecting frame; 87. Fixed rod; 88. Stabilizing plate; 89. Stabilizing groove; 810. Limiting plate; 811. Electric telescopic rod; 812. Card plate. DETAILED DESCRIPTION

[0029] Reference Figure 1 and Figure 2As shown, the present invention provides a technical solution: a tin-plating surface treatment device for a PCB board, comprising a tin-plating machine 1, a control panel 2 is fixedly connected to one side surface of the tin-plating machine 1, a placement table 3 is fixedly connected to one side surface of the tin-plating machine 1, a telescopic frame 4 is arranged on the surface of the tin-plating machine 1, a mounting frame 5 is fixedly connected to one end of the telescopic frame 4, a tin-plating roller 6 is arranged on the inner wall of the mounting frame 5, a cleaning device 7 is arranged on one side surface of the tin-plating machine 1, the cleaning device 7 cleans the tin liquid and soldering liquid and other substances attached to the surface of the tin-plating roller 6 after each tin-plating process, and it is not easy for the tin liquid on the tin-plating roller 6 to solidify and affect the subsequent surface tin-plating treatment of the PCB board, the surface of the tin-plating machine 1 is located on one side of the placement table 3 and is provided with a stabilizing device 8, the stabilizing device 8 limits and stabilizes the position of the PCB board on the placement table 3, so as to facilitate the tin-plating process of the tin-plating machine 1 on it, and it is not easy for the PCB board to slide and deviate, when the tin-plating machine 1 is used to perform surface tin-plating treatment on the PCB board, the PCB board is firstly mounted on the placement table 3, and then the tin-plating machine 1 is started to use the tin-plating machine 1. The PCB board is limited and fixed by the stabilizing device 8 so that the placement position of the PCB board remains stable, and then the tin liquid and the flux liquid are poured on the surface of the PCB board, and then the control panel 2 on one side of the tinning machine 1 is operated to start the tinning machine 1 so that the telescopic frame 4 on the surface begins to extend, and in this process, the mounting frame 5 drives the tinning roller 6 to rotate, and in the process of being driven by the telescopic frame 4, the tinning roller 6 is brought into contact and rolled with the surface of the PCB board, and the tin liquid and the flux liquid are evenly smeared on its surface, and then after the processing of the PCB board is completed, the tinning roller 6 is returned to the initial position, and the cleaning device 7 is started at the same time to clean the tin liquid and the flux liquid attached to the tinning roller 6. At this time, when the tinning machine 1 performs tinning processing on the surface of the PCB board, the tin liquid and the flux liquid and other substances adhering to the tinning roller 6 can be cleaned off in time and effectively, and it is not easy to solidify and affect the subsequent tinning processing of the PCB board, thereby improving the use effect and work efficiency of the tinning machine 1 and reducing the possibility of poor coating quality on the PCB board.

[0030] Reference Figure 1-6As shown, in this embodiment: the cleaning device 7 includes a cleaning frame 71, and the four corners of the cleaning frame 71 are respectively fixedly connected with assembled telescopic rods 72, the input end of the assembled telescopic rod 72 is fixedly connected to the surface of the tinning machine 1, the surface of the tinning machine 1 is fixedly connected with a hydraulic rod 73, the output end of the hydraulic rod 73 is fixedly connected to the surface of the cleaning frame 71, and the inner wall of the tinning machine 1 is respectively penetrated and rotatably connected with a rotating rod 74 on the side close to each other, and a brush roller 77 is fixedly connected to the circular arc surface of the rotating rod 74, and a first servo motor 75 is fixedly connected to the surface of one side of the cleaning frame 71, and the output end of the first servo motor 75 is installed with the same connecting rod on the circular arc surface of one end of the rotating rod 74 Belt 76, the bottom surface of the cleaning frame 71 is connected and fixed with a hose 78, and a water pump 79 is fixedly connected to the surface of one side of the tinning machine 1, and the output end of the water pump 79 is fixedly connected to the end of the hose 78 away from the cleaning frame 71. When the tinning machine 1 is used to tin the surface of the PCB board, the PCB board is first installed on the placement table 3, and then the stabilizing device 8 is started to limit and fix the PCB board to keep the placement position of the PCB board stable, and then the tin liquid and the flux liquid are poured on the surface of the PCB board, and then the control panel 2 on one side of the tinning machine 1 is operated to start the tinning machine 1, so that the telescopic frame 4 on the surface begins to extend, and in this process, The mounting frame 5 will drive the tinning roller 6 to rotate. During the driving process of the telescopic frame 4, the tinning roller 6 will contact and roll with the surface of the PCB board, and the tin liquid and the flux liquid will be evenly applied on its surface. Then, after the processing of the PCB board is completed, the tinning roller 6 will return to the initial position, and the cleaning device 7 will be started at the same time, so that the hydraulic rod 73 on one side of the cleaning frame 71 will start to operate, so that the cleaning frame 71 is assisted by the telescopic rod 72 to approach the tinning roller 6 until the tinning roller 6 is immersed in the clean water inside the cleaning frame 71. At the same time, the first servo motor 75 on one side of the cleaning frame 71 is started to rotate the rotating rod 74 under the action of the connecting belt 76 of the connecting belt 76. At this time, the hair The brush roller 77 will rotate simultaneously with the tin-plating roller 6, and will contact and rub against each other, thereby cleaning the tin liquid and flux liquid attached to the tin-plating roller 6. After cleaning is completed, the cleaning frame 71 is moved to the initial position, and the water pump 79 is started to discharge the sewage in the cleaning frame 71 through the hose 78, and then new water is injected. At this time, when the tin-plating machine 1 performs surface tin-plating processing on the PCB board, the tin liquid and flux liquid lamp materials adhering to the tin-plating roller 6 can be cleaned up in time and effectively, and it is not easy to solidify and affect the subsequent tin-plating processing of the PCB board, thereby improving the use effect and work efficiency of the tin-plating machine 1 and reducing the possibility of poor coating quality on the PCB board.

[0031] Reference Figure 1-6As shown, in this embodiment: the surface cover of the first servo motor 75 is provided with a protective cover 717, and the cross-section of the protective cover 717 is "C"-shaped. Through the provision of the protective cover 717, when the first servo motor 75 is in normal use, it is not easy for water stains from the cleaning frame 71 to drip or splash onto the output end of the servo motor, thereby causing tin liquid soldering liquid and the like in the sewage to adhere to the output end of the first servo motor 75, causing erosion damage thereto, affecting its normal use. On the other hand, it also ensures the normal use of the brush roller 77 and extends the service life of the device. One side surface of the cleaning frame 71 is fixedly connected to two mounting blocks 711, and one side of the two mounting blocks 711 close to each other is rotatably connected to a mounting rod 710, and a scraper 712 is fixedly connected to the circular arc surface of the mounting rod 710, and the mounting rod 710 is located at both ends of the scraper 712 and is respectively sleeved with a torsion spring The tumbler 712 is secured to the rim of the machine by means of a spring 714 which is secured to the rim of the machine when the tumbler 71,, is in contact with the tumbler 710. The tumbler 712 is secured to the rim of the machine when the tumbler 71 is in contact with the rim of the machine.

[0032] Reference Figure 1-6 As shown, in this embodiment: bearings 716 are fixedly connected to the arc surfaces at both ends of the mounting rod 710, the inner ring of the bearing 716 is fixedly connected to the mounting rod 710, and the outer ring of the mounting rod 710 is fixedly connected to the inner wall of the mounting block 711. By setting the bearing 716, the mounting rod 710 rotates with the inner wall of the mounting block 711, which can reduce the friction of the rotation, thereby reducing the wear between the mounting rod 710 and the mounting block 711, thereby ensuring the stable rotation of the mounting rod 710, so that the scraper 712 can continuously and stably remove the material attached to the plated To scrape off the water stains on the tin roller 6, a protective pad 715 is fixedly connected to the surface of one side of the scraper 712 close to the positioning plate 713. The protective pad 715 is a rubber pad. Through the setting of the protective pad 715, when the tin-plating roller 6 and the scraper 712 are in scraping contact, the scraper 712 will shake, so that the scraper 712 and the positioning plate 713 will frequently come into contact and collide. At this time, the rubber protective plate can reduce the impact force of the contact and collision, thereby ensuring the normal use of the scraper 712, not prone to abnormal damage, and better scraping off the water stains attached to the tin-plating roller 6.

[0033] Reference Figure 1 and Figure 7-9 As shown, in this embodiment: the stabilizing device 8 includes two mounting plates 81, the two mounting plates 81 are respectively fixedly connected to the surface of the tinning machine 1, a screw 82 is rotatably connected to the side of the two mounting plates 81 close to each other, and the arc surfaces at both ends of the screw 82 are respectively provided with threads in opposite directions, and the arc surfaces at both ends of the screw 82 are respectively threadedly connected to a connecting frame 86, the connecting frame 86 is slidably connected to the surface of the tinning machine 1, and a fixing rod 87 is fixedly connected to the surface of one side of the connecting frame 86, and a second servo motor 83 is fixedly connected to the surface of the tinning machine 1, and a pulley 84 is respectively fixedly connected to the output end of the second servo motor 83 and the arc surface of the screw 82, and a conveyor belt 85 is arranged on the arc surface of the pulley 84. When the PCB board is placed on the placement table 3, after the tin liquid and flux liquid are coated on its surface, the tinning machine is started. The second servo motor 83 on 1, because the screw 82 is connected and assembled with the second servo motor 83 through the transmission belt 85, the operation of the second servo motor 83 will drive the screw 82 on the mounting plate 81 to rotate, so that the distance between the connecting frames 86 on the arc surfaces at both ends of the screw 82 changes, until the fixing rods 87 fixedly connected on the two connecting frames 86 form a contact clamping with the PCB board on the placement table 3, ensuring the stable position of the PCB board. At this time, when the tinning machine 1 is used to tin the surface of the PCB board, the stable position of the PCB board on the placement table 3 can be better guaranteed, and it is not easy for the tinning roller 6 to contact when smearing the tin liquid and the flux liquid on the PCB board, causing the PCB board to slide and deviate, affecting the tinning effect, thereby improving the use effect and work efficiency of the tinning machine 1.

[0034] Reference Figure 1 and Figure 7-9As shown, in this embodiment: the surface of the tinning machine 1 is fixedly connected to a limit plate 810, and the limit plate 810 is clamped on the surface of the conveyor belt 85. Through the setting of the limit plate 810, the conveyor belt 85 assembled on the screw 82 and the pulley 84 of the second servo motor 83 can be more stable and not easy to shake, resulting in the assembly of the conveyor belt 85 being separated, thereby ensuring the rotation stability of the screw 82, and can better limit and fix the PCB board on the placement table 3, improve the surface tinning effect of the PCB board, and further improve the quality of the finished PCB board. In order to improve the utilization rate, a stabilizing groove 89 is provided on the surface of the connecting frame 86, and a stabilizing plate 88 is slidably connected to the inner wall of the stabilizing groove 89, and the stabilizing plate 88 is fixedly connected to the surface of the tinning machine 1. Through the sliding arrangement of the stabilizing plate 88 and the stabilizing groove 89, when the connecting frame 86 slides and moves under the drive of the screw 82, it can better maintain the stability of the state and is not easy to shake, so that the two fixing rods 87 can better stably contact on both sides of the surface of the PCB board, thereby ensuring the stable position of the PCB board and improving the use effect and functionality of the stabilizing device 8.

[0035] Reference Figure 1 and Figure 7-9 As shown, in this embodiment: an electric telescopic rod 811 is fixedly connected to the surface of the tinning machine 1, and a clamping plate 812 is fixedly connected to the output end of the electric telescopic rod 811, and the clamping plate 812 is clamped on the surface of the conveyor belt 85. By setting the clamping plate 812 and the electric telescopic rod 811, when the second servo motor 83 drives the screw rod 82 to operate, the electric telescopic rod 811 can be started to continuously and stably clamp the clamping plate 812 on the surface of the conveyor belt 85, so that the conveyor belt 85 can be kept in a stable and tight state at all times, so that it is not easy to loosen, and the second servo motor 83 can better drive the two fixing rods 87 to limit and fix the PCB board, thereby ensuring the normal use of the stabilizing device 8.

[0036] Working principle: When the tinning machine 1 is used to perform tinning on the surface of the PCB board, the PCB board is first mounted on the placement table 3, and then the stabilizing device 8 is started to start the second servo motor 83 on the tinning machine 1. Since the screw 82 is connected to the second servo motor 83 through the transmission belt 85, the operation of the second servo motor 83 drives the screw 82 on the mounting plate 81 to rotate, thereby changing the spacing between the connecting frames 86 on the arc surfaces at both ends of the screw 82, until the fixing rods 87 fixedly connected on the two connecting frames 86 form a contact clamping with the PCB board on the placement table 3, so that the placement position of the PCB board remains stable, and then Then, pour the tin liquid and flux liquid on the surface of the PCB board, and then operate the control panel 2 on one side of the tinning machine 1 to start the tinning machine 1, so that the telescopic frame 4 on the surface begins to extend, and in this process, the mounting frame 5 will drive the tinning roller 6 to rotate. During the driving process of the telescopic frame 4, the tinning roller 6 and the surface of the PCB board are contacted and rolled, and the tin liquid and flux liquid are evenly applied on its surface. Then, after the processing of the PCB board is completed, the tinning roller 6 is returned to the initial position, and the cleaning device 7 is started at the same time, so that the hydraulic rod 73 on one side of the cleaning frame 71 starts to operate, so that the cleaning frame 71 moves toward the tinning roller 6 with the assistance of the assembly telescopic rod 72. The cleaning frame 71 is moved closer until the tin-plating roller 6 is immersed in the clean water inside the cleaning frame 71, and at the same time, the first servo motor 75 on one side of the cleaning frame 71 is started, so that the rotating rod 74 is rotated under the action of the connecting belt 76 of the connecting belt 76. At this time, the brush roller 77 will rotate at the same time as the tin-plating roller 6, and they will contact and rub each other, so as to remove the tin liquid and flux liquid attached to the tin-plating roller 6. After the cleaning is completed, the cleaning frame 71 is moved to the initial position, and the water pump 79 is started to discharge the sewage in the cleaning frame 71 through the hose 78, and then new water is injected. During the descending process of the cleaning frame 71, the scraper 712 on the mounting rod 710 will be torsionally moved by the torsion spring 714. Under the action of the rotational force, it stably contacts and squeezes with the positioning plate 713 at one end of the cleaning frame 71, and at the same time, one side surface of the scraper 712 will just contact with the arc surface of the tin-plating roller 6. At this time, the rotating tin-plating roller 6 will rotate and contact and rub with the scraper 712, and then scrape off the water stains attached to the tin-plating roller 6. At this time, when the tin-plating machine 1 performs tin-plating processing on the surface of the PCB board, the tin liquid and flux liquid lamp materials adhering to the tin-plating roller 6 can be cleaned up in time and effectively, and it is not easy to solidify and affect the subsequent tin-plating processing of the PCB board, thereby improving the use effect and work efficiency of the tin-plating machine 1 and reducing the possibility of poor coating quality on the PCB board.

Claims

1. A tinning surface treatment device for a PCB board, comprising a tinning machine (1), characterized in that: A control panel (2) is fixedly connected to the surface of one side of the tinning machine (1); a placement table (3) is fixedly connected to the surface of one side of the tinning machine (1); a telescopic frame (4) is arranged on the surface of the tinning machine (1); one end of the telescopic frame (4) is fixedly connected to a mounting frame (5); a tinning roller (6) is arranged on the inner wall of the mounting frame (5); a cleaning device (7) is arranged on the surface of one side of the tinning machine (1); the cleaning device (7) cleans the tin liquid, soldering liquid and other substances attached to the surface of the tinning roller (6) after each tinning process, so as to prevent the tin liquid on the tinning roller (6) from solidifying and affecting the subsequent tinning process on the surface of the PCB board; a stabilizing device (8) is arranged on the surface of the tinning machine (1) on one side of the placement table (3); the stabilizing device (8) limits and stabilizes the position of the PCB board on the placement table (3), thereby facilitating the tinning process of the tinning machine (1) and preventing the PCB board from sliding and deviating.

2. The tin-plated surface treatment device for a PCB board according to claim 1, characterized in that: The cleaning device (7) comprises a cleaning frame (71), the four corners of the cleaning frame (71) are respectively fixedly connected to assembly telescopic rods (72), the input end of the assembly telescopic rod (72) is fixedly connected to the surface of the tinning machine (1), the surface of the tinning machine (1) is fixedly connected to a hydraulic rod (73), the output end of the hydraulic rod (73) is fixedly connected to the surface of the cleaning frame (71), and the inner wall of the tinning machine (1) is respectively penetrated by a rotating rod (74) on one side close to each other, and the rotating rod (74) is A brush roller (77) is fixedly connected to the arc surface, a first servo motor (75) is fixedly connected to one side surface of the cleaning frame (71), an output end of the first servo motor (75) and an arc surface of one end of the rotating rod (74) are installed with a same connecting belt (76), a hose (78) is fixedly connected to the bottom surface of the cleaning frame (71), a water pump (79) is fixedly connected to one side surface of the tinning machine (1), and an output end of the water pump (79) is fixedly connected to one end of the hose (78) away from the cleaning frame (71).

3. The tin-plated surface treatment device for a PCB board according to claim 2, characterized in that: The surface cover of the first servo motor (75) is provided with a protective cover (717), and the cross section of the protective cover (717) is in a "C" shape.

4. The tin-plated surface treatment device for a PCB board according to claim 2, characterized in that: Two mounting blocks (711) are fixedly connected to the surface of one side of the cleaning frame (71), and a mounting rod (710) is rotatably connected to the side of the two mounting blocks (711) that are close to each other. A scraper (712) is fixedly connected to the circular arc surface of the mounting rod (710), and torsion springs (714) are respectively sleeved on the two ends of the mounting rod (710) located on the scraper (712), and the two ends of the torsion spring (714) are respectively fixedly connected to the mounting blocks (711) and the scraper (712), and a positioning plate (713) is fixedly connected to the surface of one side of the cleaning frame (71), and the positioning plate (713) is in contact with the surface of one side of the scraper (712).

5. The tin-plated surface treatment device for a PCB board according to claim 4, characterized in that: Bearings (716) are fixedly connected to the arc surfaces at both ends of the mounting rod (710), the inner ring of the bearing (716) is fixedly connected to the mounting rod (710), and the outer ring of the mounting rod (710) is fixedly connected to the inner wall of the mounting block (711).

6. The tin-plated surface treatment device for a PCB board according to claim 4, characterized in that: A protection pad (715) is fixedly connected to a surface of one side of the scraper (712) close to the positioning plate (713), and the protection pad (715) is a rubber pad.

7. The tin-plated surface treatment device for a PCB board according to claim 1, characterized in that: The stabilizing device (8) comprises two mounting plates (81), the two mounting plates (81) are respectively fixedly connected to the surface of the tinning machine (1), a screw rod (82) is rotatably connected to the side of the two mounting plates (81) close to each other, the arc surfaces at both ends of the screw rod (82) are respectively provided with threads in opposite directions, the arc surfaces at both ends of the screw rod (82) are respectively threadedly connected to a connecting frame (86), the connecting frame (86) is slidably connected to the surface of the tinning machine (1), a fixing rod (87) is fixedly connected to the surface of one side of the connecting frame (86), a second servo motor (83) is fixedly connected to the surface of the tinning machine (1), a pulley (84) is fixedly connected to the output end of the second servo motor (83) and the arc surface of the screw rod (82), and a transmission belt (85) is arranged on the arc surface of the pulley (84).

8. The tin-plated surface treatment device for a PCB board according to claim 7, characterized in that: A limit plate (810) is fixedly connected to the surface of the tinning machine (1), and the limit plate (810) is clamped on the surface of the conveyor belt (85).

9. The tin-plated surface treatment device for a PCB board according to claim 7, characterized in that: A stabilizing groove (89) is provided on the surface of the connecting frame (86), a stabilizing plate (88) is slidably connected to the inner wall of the stabilizing groove (89), and the stabilizing plate (88) is fixedly connected to the surface of the tinning machine (1).

10. The tin-plated surface treatment device for a PCB board according to claim 7, characterized in that: An electric telescopic rod (811) is fixedly connected to the surface of the tinning machine (1), a clamping plate (812) is fixedly connected to the output end of the electric telescopic rod (811), and the clamping plate (812) is clamped to the surface of the conveyor belt (85).

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