A device for spraying solder mask ink on the surface of inverter PCB board

Abstract

The invention discloses a device for spraying solder mask ink on the surface of a frequency converter PCB board, which belongs to the technical field of frequency converter production. The device comprises a main body module and a spraying module. The main body module comprises a conveyor. A spraying box is fixedly connected to the top of the conveyor. A flip assembly is arranged inside the conveyor. A movable groove is opened on the top of the spraying box. A movable plate is slidably connected to the inside of the movable groove. A dustproof box is fixedly connected to the top of the spraying box. Through the arrangement of a conveying assembly, a lifting assembly, a steering assembly, a nozzle, a transmission assembly and a driving assembly, different nozzles have different spraying effects. The nozzles do not need to be manually switched by staff. Rapid switching of the nozzles can be achieved during use. The switching operation is convenient and quick, so that the device has more spraying effects to meet the spraying needs of different PCB boards and improve the applicability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency converter production, and more specifically to a device for spraying solder mask ink on the surface of a frequency converter PCB board. Background Art

[0002] The inverter is an electric power control device that applies frequency conversion technology and microelectronics technology to control the AC motor by changing the working power frequency of the motor. The inverter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc. The PCB board is an important part of the inverter. In the process of PCB board production, the upper and lower surfaces of the PCB board need to be sprayed with solder mask ink, so a spraying device is needed to process it.

[0003] In view of the above-mentioned related technologies, the current solder mask ink spraying device is provided with two nozzles during operation. The PCB board is placed on the conveyor belt, and one of the nozzles is used to spray one side of the PCB board. After spraying, the PCB board is flipped by a flipping facility. The flipped PCB board continues to be conveyed on the conveyor belt, and then the other side of the PCB board is sprayed by another nozzle. Although a single nozzle completes the spraying operation during operation, different nozzles have different spraying uniformity, spraying thickness, and spraying range. Different PCB boards have different spraying requirements. At this time, the staff needs to replace the nozzle. It is troublesome for the staff to replace the nozzle, so the device is not convenient for matching more types of PCB boards, and cannot be sprayed according to different requirements of the PCB board. For this reason, a solder mask ink spraying device for the surface of a frequency converter PCB board is proposed. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a device for spraying solder mask ink on the surface of a PCB board of a frequency converter, which adopts the following technical solution:

[0005] A device for spraying solder mask ink on the surface of a frequency converter PCB board comprises a main body module and a spraying module, wherein the main body module comprises a conveyor, a spraying box is fixedly connected to the top of the conveyor, a flip assembly is arranged inside the conveyor, a movable groove is arranged on the top of the spraying box, a movable plate is slidably connected to the inside of the movable groove, a dustproof box is fixedly connected to the top of the spraying box, a reciprocating assembly is arranged between the top of the dustproof box and the top of the movable plate, the spraying module comprises two steering rods which are both rotatably connected to the bottom of the movable plate, the top ends of the two steering rods extend to the top of the movable plate, the bottom ends of the two steering rods are fixedly connected to cross plates, and the two cross plates are respectively located at On both sides of the flip assembly, four nozzles are provided on the two cross plates, and sealing grooves are provided on the tops of the eight nozzles. Steering assemblies are provided between the tops of the two steering rods and the top of the movable plate. Two lifting assemblies are provided at the bottom of the movable plate, and a conveying assembly, a driving assembly and two transmission assemblies are provided on the top of the movable plate. The conveying assembly is connected to the two lifting assemblies, and two of the nozzles are connected to the conveying assembly, the driving assembly is connected to one of the transmission assemblies, and a transmission belt is connected between the two transmission assemblies. The two transmission assemblies are respectively connected to one of the lifting assemblies, and the two transmission assemblies are respectively adapted to the two steering assemblies.

[0006] Furthermore, the lifting assembly includes two threaded rods that are rotatably connected to the bottom of the movable plate, the lifting plate is threadedly connected between the outer surfaces of the two threaded rods, the upper parts of the outer surfaces of the two threaded rods are fixedly connected to linkage gears, the outer surfaces of the two linkage gears are meshed with each other, and the top end of one of the threaded rods extends to the top of the movable plate and is fixedly connected to a connecting gear.

[0007] Furthermore, the conveying assembly includes a material box fixedly connected to the top of the movable plate, a conveying pump fixedly connected to the top of the material box, an input end of the conveying pump extending to the interior of the material box, an output end of the conveying pump connected to a three-way diverter hose, two ends of the three-way diverter hose extending to the bottom of the movable plate, and two ends of the three-way diverter hose fixedly connected to connecting pipes, an outer surface of one of the connecting pipes being fixedly connected to the interior of the lifting plate.

[0008] Furthermore, the bottom ends of the two connecting pipes are fixedly connected with plug connectors and sealing rings, the two plug connectors are movably inserted into the inside of two of the nozzles, and the two sealing rings are movably inserted into the inside of two of the sealing grooves.

[0009] Furthermore, the steering assembly includes a Geneva steering groove wheel fixedly connected to the top of one of the steering rods, the top of the movable plate is rotatably connected to a first rotating shaft, the top of the first rotating shaft is fixedly connected to a Geneva driving wheel, the outer surface of the Geneva driving wheel is transmission-connected to the outer surface of the Geneva steering groove wheel, the outer surface of the first rotating shaft is fixedly connected to a limiting ratchet below the Geneva driving wheel, the top of the movable plate is movably connected to a limiting ratchet, and one end of the limiting ratchet is movably connected to the outer surface of the limiting ratchet.

[0010] Furthermore, the steering assembly also includes a hollow wheel rotatably connected to the top of the Geneva drive wheel, the outer surface of the hollow wheel is fixedly connected to a set gear, the top of the Geneva drive wheel is fixedly connected to an inner wheel located inside the hollow wheel, a ratchet groove is provided inside the hollow wheel, the top of the inner wheel is movably connected to a plurality of engaging ratchets, one end of the plurality of engaging ratchets are movably connected to the inside of the ratchet groove, the top of the plurality of inner wheels are fixedly connected to a plurality of elastic strips, and the outer surfaces of the plurality of elastic strips are in contact with the outer surfaces of the engaging ratchets.

[0011] Furthermore, the transmission assembly includes a second rotating shaft rotatably connected to the top of the movable plate, the top of the second rotating shaft is fixedly connected to a second bevel gear, the outer surface of the second bevel gear is meshed with the outer surface of the connecting gear, the top of the second bevel gear is fixedly connected to a transmission roller, and the transmission roller is connected to the transmission belt.

[0012] Furthermore, the driving assembly includes a third rotating shaft rotatably connected to the top of the movable plate, the top of the third rotating shaft is fixedly connected to a first umbrella-shaped gear, the outer surface of the first umbrella-shaped gear is fixedly connected to a hollow bar, the outer surface of the second rotating shaft is fixedly connected to a driving gear meshing with the first umbrella-shaped gear, the bottom of the movable plate is fixedly connected to a first motor, the output shaft of the first motor extends to the top of the movable plate, the output shaft of the first motor is fixedly connected to a first driving disk, the top of the first driving disk is fixedly connected to a driving shaft, and the driving shaft is movably connected to the inside of the hollow bar.

[0013] Furthermore, the reciprocating assembly includes a second motor fixedly connected to the top of the dustproof box, the output shaft of the second motor extends into the interior of the dustproof box, the output shaft of the second motor is fixedly connected to a second drive disk, the bottom of the second drive disk is movably connected to a reciprocating arm, and one end of the reciprocating arm is movably connected to the top of the movable plate.

[0014] Furthermore, the flipping assembly includes two third motors fixedly connected to the bottom of the spray box, the output shafts of the two third motors extend to the interior of the conveyor, the output shafts of the two third motors are fixedly connected to the inner groove plates, the tops of the two inner groove plates are fixedly connected to the cylinders, the output shafts of the two cylinders extend to the interiors of the two inner groove plates respectively, and the output shafts of the two cylinders are fixedly connected to the pressure plates.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] (1) The present invention provides different spray heads with different spray effects by arranging a conveying component, a lifting component, a steering component, a spray head, a transmission component and a driving component. The spray heads do not need to be manually switched by the staff. The spray heads can be quickly switched during use. The switching operation is convenient and quick, so that the device has more spray effects to meet the spraying needs of different PCB boards, thereby improving the applicability of the device.

[0017] (2) The present invention arranges the transmission roller and the transmission belt so that when the driving assembly is turned on, the two transmission assemblies can be driven to work simultaneously, so that the nozzles for spraying the two sides of the PCB board can be switched synchronously, further improving the convenience of the device;

[0018] (3) The present invention can improve the tightness of the connection between the nozzle and the connecting pipe by setting the sealing ring and the sealing groove, thereby avoiding leakage of the spraying material;

[0019] (4) The present invention can limit the rotation direction of the first rotating shaft by setting the limiting ratchet wheel and the limiting ratchet teeth, thereby preventing the first rotating shaft from driving the Geneva drive wheel to rotate in the opposite direction, thereby making the device more stable when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the internal structure of the dustproof box of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the conveying assembly of the present invention;

[0023] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0024] Figure 5 It is a structural schematic diagram of the lifting assembly of the present invention;

[0025] Figure 6 It is a schematic diagram of the exploded structure of the drive assembly of the present invention;

[0026] Figure 7 It is a cross-sectional structural schematic diagram of the connecting pipe and the nozzle of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the flip assembly of the present invention.

[0028] Description of the numbers in the figure:

[0029] 100, main module; 110, conveyor; 120, spray box; 130, flip assembly; 131, third motor; 132, inner groove plate; 133, pressure plate; 134, cylinder; 140, movable plate; 150, reciprocating assembly; 151, second motor; 152, second drive disk; 153, reciprocating arm; 160, dustproof box;

[0030] 200, spraying module; 210, steering rod; 220, cross plate; 230, nozzle; 240, steering assembly; 241, Geneva steering groove wheel; 242, Geneva drive wheel; 243, limit ratchet; 244, limit ratchet; 245, hollow wheel; 246, inner wheel; 247, connecting ratchet; 248, elastic strip; 249, set gear; 250, lifting assembly; 251, threaded rod; 252, lifting plate; 253, linkage gear; 25 4. Connecting gear; 260. Conveying assembly; 261. Material box; 262. Conveying pump; 263. Three-way diverter hose; 264. Connecting pipe; 265. Plug connector; 266. Sealing ring; 270. Transmission assembly; 271. Second rotating shaft; 272. Second umbrella-shaped gear; 273. Transmission roller; 280. Driving assembly; 281. First umbrella-shaped gear; 282. Driving shaft; 283. Driving gear; 284. First motor; 285. First driving disk;

[0031] 300. Transmission belt. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The following is combined with Figure 1-8 The present invention is described in further detail.

[0036] See also Figure 1-8A device for spraying solder mask ink on the surface of a PCB board of a frequency converter comprises a main body module 100 and a spraying module 200. The main body module 100 comprises a conveyor 110. A spray box 120 is fixedly connected to the top of the conveyor 110. A flip assembly 130 is arranged inside the conveyor 110. A movable groove is provided on the top of the spray box 120. A movable plate 140 is slidably connected inside the movable groove. A dustproof box 160 is fixedly connected to the top of the spray box 120. A reciprocating assembly 150 is arranged between the top of the dustproof box 160 and the top of the movable plate 140. The spraying module 200 comprises two steering rods 210 which are both rotatably connected to the bottom of the movable plate 140. The top ends of the two steering rods 210 extend to the top of the movable plate 140. The bottom ends of the two steering rods 210 are fixedly connected to cross plates 220. The two cross plates 220 are respectively located at the flip assembly 130, the top ends of the two steering rods 210 are fixedly connected to the bottom of the movable plate 140, and the two cross plates 220 are respectively located at the top of the flip assembly 130. On both sides of the component 130, four nozzles 230 are provided on the two cross plates 220, and sealing grooves are provided on the tops of the eight nozzles 230. Steering assemblies 240 are provided between the tops of the two steering rods 210 and the top of the movable plate 140. Two lifting assemblies 250 are provided at the bottom of the movable plate 140. A conveying assembly 260, a driving assembly 280 and two transmission assemblies 270 are provided on the top of the movable plate 140. The conveying assembly 260 is connected to the two lifting assemblies 250, and two of the nozzles 230 are connected to the conveying assembly 260. The driving assembly 280 is connected to one of the transmission assemblies 270. A transmission belt 300 is connected between the two transmission assemblies 270. The two transmission assemblies 270 are respectively connected to one of the lifting assemblies 250, and the two transmission assemblies 270 are respectively adapted to the two steering assemblies 240.

[0037] When in use, the PCB board that needs to be sprayed will be placed on the conveyor 110 for transportation. During transportation, two of the nozzles 230 are fed through the conveying component 260, and the reciprocating component 150 can be opened to drive the movable plate 140 to swing back and forth, so that the two nozzles 230 swing back and forth, one of the nozzles 230 is opened to spray one side of the PCB board, and after the spraying is completed, the sprayed PCB board is flipped through the flipping component 130, and after flipping, it is sprayed through another nozzle 230, so as to achieve comprehensive spraying of the PCB board, when it is necessary to switch the nozzle, open the driving component 280, the driving component 280 will drive one of the transmission components 270, and the two transmission components 270 will swing through the linkage of the transmission belt 300, and the two transmission components 270 will respectively drive the two lifting components 250, and the two lifting components 250 will be moved. Component 250 drives the conveying component 260 to separate from the two nozzles 230, and then the two transmission components 270 are disengaged from the two lifting components 250, and the two transmission components 270 are connected to the two steering components 240, thereby driving the steering rod 210 to rotate, so that the other two nozzles 230 move to the bottom of the lifting component 250, and then the two transmission components 270 will reset and swing, and the two transmission components 270 will drive the two steering components 240 when resetting and swinging, so that the steering rod 210 will not be driven, and then the transmission component 270 is disengaged from the steering component 240 to re-transmit the two lifting components 250, so that the two lifting components 250 drive the conveying component 260 to reconnect with the other two nozzles 230, thereby realizing the automatic replacement of the two nozzles 230, so that the device can be easily adapted to the spraying needs of more PCB boards and improve the applicability of the device.

[0038] The lifting assembly 250 includes two threaded rods 251 that are rotatably connected to the bottom of the movable plate 140, a lifting plate 252 is threadedly connected between the outer surfaces of the two threaded rods 251, and the upper parts of the outer surfaces of the two threaded rods 251 are fixedly connected to linkage gears 253, and the outer surfaces of the two linkage gears 253 are meshed with each other, and the top of one of the threaded rods 251 extends to the top of the movable plate 140 and is fixedly connected to a connecting gear 254, and the conveying assembly 260 includes a material box 261 that is fixedly connected to the top of the movable plate 140, and a conveying pump 262 is fixedly connected to the top of the material box 261, and the input end of the conveying pump 262 Extending to the interior of the material box 261, the output end of the delivery pump 262 is connected to a three-way diverter hose 263, both ends of which extend to the bottom of the movable plate 140, and both ends of the three-way diverter hose 263 are fixedly connected to connecting pipes 264, the outer surface of one connecting pipe 264 is fixedly connected to the interior of the lifting plate 252, and the bottom ends of the two connecting pipes 264 are fixedly connected to a plug connector 265 and a sealing ring 266, the two plug connectors 265 are respectively movably connected to the interior of two of the nozzles 230, and the two sealing rings 266 are respectively movably connected to the interior of two of the sealing grooves.

[0039] By opening the delivery pump 262, the raw materials in the material box 261 are delivered to the interior of two of the nozzles 230 through the three-way diversion hose 263 and the two connecting pipes 264. By setting the sealing groove and the sealing ring 266, the tightness of the connection between the nozzle 230 and the connecting pipe 264 can be improved to avoid leakage of the spraying raw materials.

[0040] The steering assembly 240 includes a Geneva steering groove wheel 241 fixedly connected to the top of one of the steering rods 210, the top of the movable plate 140 is rotatably connected to a first rotating shaft, the top of the first rotating shaft is fixedly connected to a Geneva driving wheel 242, the outer surface of the Geneva driving wheel 242 is transmission-connected to the outer surface of the Geneva steering groove wheel 241, the outer surface of the first rotating shaft is fixedly connected to a limiting ratchet 243 below the Geneva driving wheel 242, the top of the movable plate 140 is movably connected to a limiting ratchet 244, and one end of the limiting ratchet 244 is movably connected to the limiting ratchet The steering assembly 240 further comprises a hollow wheel 245 rotatably connected to the top of the Geneva drive wheel 242, a set gear 249 is fixedly connected to the outer surface of the hollow wheel 245, an inner wheel 246 located inside the hollow wheel 245 is fixedly connected to the top of the Geneva drive wheel 242, a ratchet groove is provided inside the hollow wheel 245, a plurality of engaging ratchet teeth 247 are movably connected to the top of the inner wheel 246, one end of the plurality of engaging ratchet teeth 247 are movably connected to the inside of the ratchet groove, a plurality of elastic strips 248 are fixedly connected to the top of the plurality of inner wheels 246, The outer surfaces of the plurality of elastic strips 248 are in contact with the outer surfaces of the engaging ratchet teeth 247. The transmission assembly 270 includes a second rotating shaft 271 rotatably connected to the top of the movable plate 140. The top of the second rotating shaft 271 is fixedly connected to a second umbrella-shaped gear 272. The outer surface of the second umbrella-shaped gear 272 meshes with the outer surface of the engaging gear 254. The top of the second umbrella-shaped gear 272 is fixedly connected to a transmission roller 273. The transmission roller 273 is transmission-connected to the transmission belt 300. The driving assembly 280 includes a third rotating shaft rotatably connected to the top of the movable plate 140. A first umbrella-shaped gear 281 is fixedly connected to the top, and a hollow bar is fixedly connected to the outer surface of the first umbrella-shaped gear 281. A driving gear 283 meshing with the first umbrella-shaped gear 281 is fixedly connected to the outer surface of the second rotating shaft 271. A first motor 284 is fixedly connected to the bottom of the movable plate 140, and an output shaft of the first motor 284 extends to the top of the movable plate 140. A first driving disk 285 is fixedly connected to the output shaft of the first motor 284, and a driving shaft 282 is fixedly connected to the top of the first driving disk 285. The driving shaft 282 is movably connected to the inside of the hollow bar.

[0041] Turning on the first motor 284 can drive the first driving disk 285 to rotate one circle, and the first driving disk 285 drives the driving shaft 282 to move inside the hollow bar and pushes the first umbrella gear 281 to swing one round, and the first umbrella gear 281 drives the second rotating shaft 271 and the second umbrella gear 272 to swing one round through the driving gear 283, and the transmission roller 273 makes the two second umbrella gears 272 swing through the linkage of the transmission belt 300, and the second umbrella gear 272 will first drive the connecting gear 254, and the connecting gear 254 drives one of the threaded rods 251 to rotate, and the two threaded rods 251 are rotated through the meshing of the two linkage gears 253 to drive the lifting plate 252 to rise, and when the lifting plate 252 rises, it will drive the connecting pipe 264 and the plug connector 265 to rise, so that the plug connector 265 is withdrawn from the nozzle 230 and the sealing ring 266 is withdrawn from the sealing groove, and then the two second umbrella gears 272 are disengaged from the connecting gear 254, and the second umbrella gear 272 The hollow wheel 245 is connected to the set gear 249, and the set gear 249 will drive the hollow wheel 245 to rotate. The hollow wheel 245 will drive the inner wheel 246 through the ratchet groove and the connecting ratchet 247. The inner wheel 246 drives the Geneva drive wheel 242 to rotate and drive the Geneva steering groove wheel 241, so that the Geneva steering groove wheel 241 drives the steering rod 210 and the cross plate 220 to rotate, thereby completing the switching of the nozzle 230, and the subsequent two second umbrella-shaped gears 272 will reset and swing, through the limit ratchet 2 43 cooperates with the limiting ratchet 244 to limit the rotation direction of the first rotating shaft, so that the second umbrella-shaped gear 272 drives the set gear 249 to drive the hollow wheel 245 to idle, and the ratchet groove will push the connecting ratchet 247 to move. Finally, the second umbrella-shaped gear 272 is separated from the set gear 249 and reconnected with the connecting gear 254, so that the connecting pipe 264 is lowered, and the plug connector 265 is inserted back into the switched nozzle 230, and the sealing ring 266 is inserted into the sealing groove for sealing.

[0042] The reciprocating assembly 150 includes a second motor 151 fixedly connected to the top of the dustproof box 160, the output shaft of the second motor 151 extends into the interior of the dustproof box 160, the output shaft of the second motor 151 is fixedly connected to a second drive disk 152, the bottom of the second drive disk 152 is movably connected to a reciprocating arm 153, and one end of the reciprocating arm 153 is movably connected to the top of the movable plate 140.

[0043] Turning on the second motor 151 can drive the second driving disk 152 to rotate, and the second driving disk 152 will push the movable plate 140 to swing back and forth through the reciprocating arm 153. The two movable plates 140 can drive two of the nozzles 230 to swing back and forth.

[0044] The flipping assembly 130 includes two third motors 131 fixedly connected to the bottom of the spray box 120, the output shafts of the two third motors 131 extend to the interior of the conveyor 110, the output shafts of the two third motors 131 are fixedly connected to the inner groove plate 132, the tops of the two inner groove plates 132 are fixedly connected to the cylinders 134, the output shafts of the two cylinders 134 extend to the interior of the two inner groove plates 132 respectively, and the output shafts of the two cylinders 134 are fixedly connected to the pressure plate 133.

[0045] After spraying is completed, the PCB board enters between the two inner groove plates 132, and the two cylinders 134 and the third motor 131 are turned on. The two cylinders 134 drive the pressing plate 133 to press and fix the PCB board. After fixation, the two third motors 131 drive the PCB board to flip.

[0046] The implementation principle of the embodiment of the present invention is as follows: when in use, different nozzles 230 have different spraying functions. The PCB board that needs to be sprayed will be placed on the conveyor 110 for transportation. During transportation, the delivery pump 262 is turned on, so that the raw materials in the material box 261 are transported to the inside of two of the nozzles 230 through the three-way diversion hose 263 and the two connecting pipes 264. The second motor 151 is turned on to drive the second drive disk 152 to rotate. The second drive disk 152 will push the movable plate 140 to swing back and forth through the reciprocating arm 153. The two movable plates 140 can drive two of the nozzles 230 to swing back and forth. One of the nozzles 230 is opened to spray one side of the PCB board. After the spraying is completed, the PCB The plate enters between the two inner groove plates 132, the two cylinders 134 and the third motor 131 are turned on, the two cylinders 134 drive the pressing plate 133 to press and fix the PCB board, and after fixing, the two third motors 131 drive the PCB board to flip, and the flipped PCB board continues to be transported and sprayed through another one of the nozzles 230, so as to achieve comprehensive spraying of the PCB board. When it is necessary to switch the nozzle, turn on the first motor 284 to drive the first driving disk 285 to rotate one circle, the first driving disk 285 drives the driving shaft 282 to move inside the hollow bar and push the first umbrella gear 281 to swing one round, and the first umbrella gear 281 drives the second rotating shaft 281 through the driving gear 283. 71 and the second umbrella-shaped gear 272 swing for one round, the transmission roller 273 makes the two second umbrella-shaped gears 272 swing through the linkage of the transmission belt 300, the second umbrella-shaped gear 272 will first drive the connecting gear 254, the connecting gear 254 drives one of the threaded rods 251 to rotate, and the two threaded rods 251 are both rotated by the meshing of the two linkage gears 253 to drive the lifting plate 252 to rise, and when the lifting plate 252 rises, it will drive the connecting pipe 264 and the plug connector 265 to rise, so that the plug connector 265 is withdrawn from the nozzle 230 and the sealing ring 266 is withdrawn from the sealing groove, and then the two second umbrella-shaped gears 272 are separated from the connecting gear 254, and the second umbrella-shaped gear 272 is separated from the set gear 249 The set gear 249 will drive the hollow wheel 245 to rotate, and the hollow wheel 245 will drive the inner wheel 246 through the ratchet groove and the connecting ratchet 247. The inner wheel 246 drives the Geneva drive wheel 242 to rotate and drive the Geneva steering groove wheel 241, so that the Geneva steering groove wheel 241 drives the steering rod 210 and the cross plate 220 to rotate, thereby completing the switching of the nozzle 230, and the subsequent two second umbrella-shaped gears 272 will reset and swing, through the limiting cooperation of the limiting ratchet 243 and the limiting ratchet 244, thereby limiting the rotation direction of the first rotating shaft, so that the second umbrella-shaped gear 272 drives the set gear 249 to drive the hollow wheel 245 to idle, and at this time the ratchet groove will push the connecting ratchet 247 to move,Finally, the second umbrella gear 272 is separated from the set gear 249 and reconnected to the connecting gear 254, so that the connecting pipe 264 is lowered, the plug connector 265 is inserted back into the switched nozzle 230, and the sealing ring 266 is inserted into the sealing groove for sealing, thereby realizing the automatic replacement of the two nozzles 230, so that the device can be easily adapted to the spraying needs of more PCB boards and improve the applicability of the device.

[0047] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for spraying solder mask ink on the surface of a frequency converter PCB, comprising a main module (100) and a spraying module (200), characterized in that: The main body module (100) comprises a conveyor (110), the top of the conveyor (110) is fixedly connected to a spray box (120), a turnover assembly (130) is arranged inside the conveyor (110), a movable groove is opened on the top of the spray box (120), a movable plate (140) is slidably connected inside the movable groove, a dustproof box (160) is fixedly connected to the top of the spray box (120), and a reciprocating assembly (150) is arranged between the top of the dustproof box (160) and the top of the movable plate (140); The spraying module (200) comprises two steering rods (210) which are both rotatably connected to the bottom of the movable plate (140), the top ends of the two steering rods (210) extend to the top of the movable plate (140), the bottom ends of the two steering rods (210) are fixedly connected to a cross plate (220), the two cross plates (220) are respectively located on both sides of the flip assembly (130), four spray heads (230) are arranged on the two cross plates (220), the top ends of the eight spray heads (230) are provided with sealing grooves, a steering assembly (240) is arranged between the top ends of the two steering rods (210) and the top of the movable plate (140), and the bottom of the movable plate (140) is provided with a plurality of spray heads (230). Two lifting assemblies (250) are provided, and a conveying assembly (260), a driving assembly (280) and two transmission assemblies (270) are provided on the top of the movable plate (140); the conveying assembly (260) is connected to the two lifting assemblies (250), and the two nozzles (230) are both connected to the conveying assembly (260); the driving assembly (280) is connected to one of the transmission assemblies (270); a transmission belt (300) is connected between the two transmission assemblies (270); the two transmission assemblies (270) are respectively connected to one of the lifting assemblies (250), and the two transmission assemblies (270) are respectively adapted to the two steering assemblies (240); The lifting assembly (250) comprises two threaded rods (251) both rotatably connected to the bottom of the movable plate (140); a lifting plate (252) is threadedly connected between the outer surfaces of the two threaded rods (251); the upper parts of the outer surfaces of the two threaded rods (251) are fixedly connected to linkage gears (253); the outer surfaces of the two linkage gears (253) are meshed with each other; the top end of one of the threaded rods (251) extends to the top of the movable plate (140) and is fixedly connected to a connecting gear (254); The conveying assembly (260) comprises a material box (261) fixedly connected to the top of the movable plate (140), a conveying pump (262) fixedly connected to the top of the material box (261), an input end of the conveying pump (262) extending to the interior of the material box (261), an output end of the conveying pump (262) connected to a three-way diverter hose (263), two ends of the three-way diverter hose (263) extending to the bottom of the movable plate (140), and two ends of the three-way diverter hose (263) fixedly connected to connecting pipes (264), an outer surface of one of the connecting pipes (264) fixedly connected to the interior of the lifting plate (252); The bottom ends of the two connecting pipes (264) are fixedly connected with a plug connector (265) and a sealing ring (266); the two plug connectors (265) are respectively movably plugged into the interior of two of the nozzles (230); and the two sealing rings (266) are respectively movably plugged into the interior of two of the sealing grooves; The steering assembly (240) comprises a Geneva steering groove wheel (241) fixedly connected to the top of one of the steering rods (210); the top of the movable plate (140) is rotatably connected to a first rotating shaft; the top of the first rotating shaft is fixedly connected to a Geneva driving wheel (242); the outer surface of the Geneva driving wheel (242) is transmission-connected to the outer surface of the Geneva steering groove wheel (241); the outer surface of the first rotating shaft is fixedly connected to a limiting ratchet (243) below the Geneva driving wheel (242); the top of the movable plate (140) is movably connected to a limiting ratchet (244); one end of the limiting ratchet (244) is movably connected to the outer surface of the limiting ratchet (243); The steering assembly (240) further comprises a hollow wheel (245) rotatably connected to the top of the Geneva drive wheel (242); a set gear (249) is fixedly connected to the outer surface of the hollow wheel (245); an inner wheel (246) located inside the hollow wheel (245) is fixedly connected to the top of the Geneva drive wheel (242); a ratchet groove is provided inside the hollow wheel (245); a plurality of engaging ratchet teeth (247) are movably connected to the top of the inner wheel (246); one end of each of the engaging ratchet teeth (247) is movably connected to the inside of the ratchet groove; a plurality of elastic strips (248) are fixedly connected to the top of each of the inner wheels (246); and the outer surfaces of each of the elastic strips (248) are in contact with the outer surfaces of the engaging ratchet teeth (247); The transmission assembly (270) comprises a second rotating shaft (271) rotatably connected to the top of the movable plate (140); a second bevel gear (272) is fixedly connected to the top of the second rotating shaft (271); an outer surface of the second bevel gear (272) meshes with an outer surface of the connecting gear (254); a transmission roller (273) is fixedly connected to the top of the second bevel gear (272); and the transmission roller (273) is transmission-connected to the transmission belt (300); The driving assembly (280) comprises a third rotating shaft rotatably connected to the top of the movable plate (140); the top of the third rotating shaft is fixedly connected to a first umbrella-shaped gear (281); the outer surface of the first umbrella-shaped gear (281) is fixedly connected to a hollow bar; the outer surface of the second rotating shaft (271) is fixedly connected to a driving gear (283) meshing with the first umbrella-shaped gear (281); the bottom of the movable plate (140) is fixedly connected to a first motor (284); the output shaft of the first motor (284) extends to the top of the movable plate (140); the output shaft of the first motor (284) is fixedly connected to a first driving disk (285); the top of the first driving disk (285) is fixedly connected to a driving shaft (282); and the driving shaft (282) is movably connected inside the hollow bar.

2. The device for spraying solder mask ink on the surface of a PCB board of a frequency converter according to claim 1, characterized in that: The reciprocating assembly (150) comprises a second motor (151) fixedly connected to the top of the dustproof box (160), the output shaft of the second motor (151) extends into the interior of the dustproof box (160), the output shaft of the second motor (151) is fixedly connected to a second drive disk (152), the bottom of the second drive disk (152) is movably connected to a reciprocating arm (153), and one end of the reciprocating arm (153) is movably connected to the top of the movable plate (140).

3. The device for spraying solder mask ink on the surface of a PCB board of a frequency converter according to claim 2, characterized in that: The flip assembly (130) comprises two third motors (131) both fixedly connected to the bottom of the spray box (120), the output shafts of the two third motors (131) both extend to the inside of the conveyor (110), the output shafts of the two third motors (131) are both fixedly connected to the inner groove plate (132), the tops of the two inner groove plates (132) are both fixedly connected to the cylinders (134), the output shafts of the two cylinders (134) extend to the inside of the two inner groove plates (132) respectively, and the output shafts of the two cylinders (134) are both fixedly connected to the pressure plate (133).

Images