A remote controller component positioning and welding tool

Abstract

The application relates to the technical field of welding processing equipment, and discloses a component positioning and welding tool of a remote controller, which comprises a base, a supporting base is arranged at the middle of the bottom end of the base, an electrical box for providing control and energy supply for the whole device is arranged in the supporting base; a conveying and discharging mechanism is arranged at the middle of the top end of the base and is used for conveying a printed circuit board in the remote controller and discharging static electricity generated by friction on the printed circuit board. When the printed circuit board on the remote controller is subjected to welding processing of metal springs, ion wind generated by an ion fan in the removing protection mechanism is pressurized through a flat accelerating part and can be concentratedly sprayed to a welding area, so that partial static electricity generated in the welding process can be comprehensively eliminated, hidden damage of integrated circuits caused by static electricity residues can be avoided, the ion wind can also blow the flexible grounding sheet to contact the plate body, a secondary static electricity discharging channel is formed, and double protection is provided for static electricity removal.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a component positioning welding fixture for a remote control. Background Technology

[0002] Remote controls, as indispensable electrical control devices in daily life, are widely used in various home appliances such as televisions, air conditioners, and set-top boxes. Their high frequency of use and diverse operating scenarios place fundamental demands on the stability and reliability of their internal structure. The printed circuit board (PCB), as a core component of the remote control, bears the key functions of signal transmission and command response. Most remote controls on the market currently use carbon film buttons, which form conductive paths by printing conductive paste on the surface of the PCB. This button structure has no physical pins and relies entirely on the printed carbon film for current conduction, making it a crucial element in ensuring the remote control's operational sensitivity. Meanwhile, the metal spring, as an important component that works in conjunction with the carbon film buttons, needs to be precisely soldered to designated positions on the PCB. Its soldering precision directly affects the button's pressure transmission and triggering performance.

[0003] However, the unique structure and component characteristics of the remote control's printed circuit board present numerous technical challenges during the soldering process. The carbon film itself has weak heat resistance, and the high temperatures during soldering can easily cause a decrease in its conductivity or even failure. Furthermore, the leadless design increases the difficulty of soldering positioning. More importantly, the low-power integrated circuits inside the remote control are extremely sensitive to static electricity, and electrostatic interference generated during soldering has become one of the main causes of chip failure. Current soldering processes using only a single grounding measure are insufficient to completely eliminate localized static electricity accumulation, often leading to hidden damage to integrated circuits. This not only affects the remote control's factory pass rate but also shortens its lifespan, causing dual problems for both production and use. Therefore, those skilled in the art have proposed a component positioning and soldering fixture for remote controls to solve the aforementioned technical problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a component positioning and welding fixture for remote controls, which solves the problem that existing welding processes using a single grounding method cannot completely eliminate static electricity accumulation on the surface of printed circuit boards.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a component positioning and welding fixture for a remote controller, comprising,

[0006] The base has a support base at the bottom center, and the support base contains an electrical box that provides control and power to the entire equipment.

[0007] The conveying and discharging mechanism is located at the top center of the base and is used to convey the printed circuit board inside the remote control and discharge the static electricity generated by friction on it.

[0008] A flexible positioning mechanism is located on one side of the top center of the base and is used to position the printed circuit board after it has been processed by the conveying and exporting mechanism.

[0009] A local preheating mechanism is located on one side of the top center of the base. It is used to preheat and weld the carbon film position of the metal spring on the printed circuit board after the flexible positioning mechanism has been processed.

[0010] The removal and protection mechanism, located on one side of the top center of the base, is used to perform final localized electrostatic discharge treatment on the printed circuit board after processing.

[0011] Preferably, the conveying and discharging mechanism includes a strip-shaped base. The strip-shaped base is provided at the top center of the base. A conveyor belt for conveying and moving the remote control printed circuit board is provided on the inner bottom of the strip-shaped base. A metal frame is provided on the upper inner part of the strip-shaped base. Adjusting columns are fixedly connected to two corners on the front and rear sides of the metal frame. The adjusting columns are respectively located at corresponding positions inside the strip-shaped base. Limiting conductive bolts are provided on the upper middle part of the front and rear sides of the strip-shaped base. The ends of the limiting conductive bolts extend into the fixing holes at the corresponding heights of the adjusting columns. Multiple conductive rollers are equidistantly rotatably connected inside the metal frame.

[0012] Preferably, the conveying and discharging mechanism further includes a metal conductive seat. The front and rear sides of the strip seat are fixedly connected to the metal conductive seat. The outer wall of the limiting conductive bolt is fitted with a conductive wire ring, and the bottom end of the conductive wire ring is connected to the corresponding position of the metal conductive seat. The bottom center of the metal conductive seat is provided with a grounding wire, and the end of the grounding wire is in contact with the corresponding position of the top of the base.

[0013] Preferably, the flexible positioning mechanism includes a processing seat, and the processing seat is fixedly connected to one side of the top center of the base. A processing position is opened in the top center of the processing seat, and a lower groove is opened on the bottom center of the processing position near the strip seat.

[0014] Preferably, the flexible positioning mechanism further includes a piezoelectric telescopic positioning arm. The piezoelectric telescopic positioning arm is provided in the lower middle part of the inner wall on the side of the processing position away from the strip seat. The telescopic end of the piezoelectric telescopic positioning arm is provided with a spin mounting seat that can automatically step and rotate. A rubber seat is provided on one end face of the spin mounting seat. Capacitive sensors are provided inside the rubber seats. Multiple vacuum suction cups are equidistantly arranged inside the lower groove.

[0015] Preferably, the local preheating mechanism includes an infrared sensor. An infrared sensor for monitoring the temperature of the solder area of ​​the printed circuit board is provided on the side of the spin mount away from the piezoelectric telescopic positioning arm. A miniature heating seat for preheating the solder area of ​​the printed circuit board is provided on one end face of the spin mount. A laser welding arm is provided at the middle of the front side of the top of the treatment seat. A loading robot arm is provided at the middle of the rear side of the top of the treatment seat.

[0016] Preferably, the local preheating mechanism further includes a circulating cooler. Circulating coolers are provided on both sides of the bottom center of the processing position. Multiple strip-shaped heat dissipation seats are equidistantly arranged inside the lower groove. Each strip-shaped heat dissipation seat is connected to the interior of the circulating coolers on both sides through a connecting pipe.

[0017] Preferably, the removal and protection mechanism includes an air outlet box. The air outlet box is located in the lower middle part of the inner wall of the processing position away from the strip seat. A flat acceleration part for accelerating and pressurizing the ion wind is provided at the end of the air outlet box. An ion fan is located in the lower middle part of the outer wall of the processing position away from the strip seat. The air outlet of the ion fan is connected to the interior of the air outlet box through a connecting pipe.

[0018] Preferably, the removal protection mechanism further includes a flexible grounding plate, a flexible grounding plate is provided on one side of the middle part of the bottom end of the processing position, a connecting piece is provided on the end of the flexible grounding plate, and the bottom end of the connecting piece is connected to the corresponding position of the bottom end of the processing position. A reset guide rib is provided at the edge of the flexible grounding plate to assist its reset.

[0019] Working Principle: During the soldering process of the printed circuit board (PCB) and its metal contacts inside the remote control, the conveyor mechanism is activated first. The processed PCB is conveyed into a strip-shaped base. Inside the base, the PCB is moved by a conveyor belt. During this movement, the upper surface of the PCB contacts the conductive rollers on the metal frame. Static electricity generated by friction during transport is conducted sequentially through the conductive rollers and the metal frame to the limiting conductive bolts. The static electricity on the limiting conductive bolts is then guided by the conductive loops into the metal conductive seat on the strip for temporary storage. The static electricity stored on the metal conductive seat is then conducted to the base via a grounding wire, and finally to the ground through the support base at the bottom of the metal conductive seat. This ensures complete elimination of static electricity from the PCB on the conveyor belt within the strip, thus completing the initial static electricity removal process. Then, the flexible positioning mechanism is activated, and the PCB, after being processed by the conveyor mechanism... The printed circuit board is conveyed into the processing position within the processing unit. At this time, the piezoelectric telescopic positioning arm in the processing position is activated. Simultaneously, the piezoelectric telescopic positioning arm moves telescopically according to its preset button pad coordinates. During this telescopic movement, it drives the spin mount, the rubber seat at its bottom, and the printed circuit board in the lower groove to perform positional calibration. While calibrating, the capacitive sensor in the rubber seat provides real-time feedback on the displacement data of the printed circuit board in the lower groove, thereby ensuring the accuracy of its positional calibration. During this positioning process, the flexibility of the rubber seat not only ensures the positioning accuracy of the printed circuit board but also prevents physical damage to the components on the printed circuit board through the cushioning effect of the rubber material. After the positioning calibration of the printed circuit board in the lower groove is completed, the vacuum chuck in the lower groove is activated. The vacuum chuck generates negative pressure upon activation, thereby uniformly adsorbing and fixing the non-soldering surface of the printed circuit board in the lower groove, preventing board warping caused by pressure during subsequent processing. This completes the positioning process of the printed circuit board before processing.Then, the local preheating mechanism is activated. First, the spin mount on the piezoelectric telescopic positioning arm rotates, causing the miniature heating seat on the spin mount to rotate to its bottom. Then, the piezoelectric telescopic positioning arm extends and retracts the spin mount, positioning the miniature heating seat above the soldering area of ​​the printed circuit board. Next, the miniature heating seat on the spin mount activates and blows hot air to continuously preheat the soldering area of ​​the printed circuit board, preventing bulging and other phenomena caused by a sudden temperature rise during soldering. Afterward, the laser welding arm and the loading robotic arm on the processing unit are activated. The loading robotic arm clamps the metal spring sheet to be welded. The laser welding arm picks up the circuit board and moves it to the soldering area. During this process, an infrared sensor on the spin mount monitors the temperature of the soldering area in real time, while heat from the circuit board is simultaneously transferred to the heat sink. Once the temperature of the heat sink exceeds a set value, the circulating cooler in the processing area activates, circulating the cooling liquid within the heat sink to ensure effective cooling of the circuit board. This completes the local preheating and welding of the circuit board. Finally, the protective mechanism is removed, and the local preheating mechanism is used to heat the printed circuit board. After the board is processed, the ion fan on the processing unit is started. The ionized air generated by the ion fan enters the air outlet box. When the ionized air is discharged from the air outlet box, it is pressurized and accelerated by the flat acceleration part at its end. After being pressurized and accelerated, the ionized air is sprayed onto the soldering area of ​​the printed circuit board. The sprayed ionized air eliminates the surface static electricity on the soldering area of ​​the printed circuit board. At the same time as the ionized air is sprayed in the air outlet box, it blows the flexible grounding plate in the processing position. The pressure of the ionized air blows the originally S-shaped flexible grounding plate into a straight state, making it straight. The flexible grounding plate then contacts the printed circuit board in the lower groove, forming an electrostatic discharge channel. The surface static electricity on the printed circuit board in the lower groove is then sequentially conducted through the flexible grounding plate to the connecting piece, processing seat, base, and support base, ultimately reaching the ground. This eliminates the static electricity on the surface of the printed circuit board after soldering. After the printed circuit board is processed, the ionizing air in the exhaust box stops discharging, and the flexible grounding plate is no longer affected by pressure. At this point, the reset guide rib on the flexible grounding plate pulls it back to its original state, thus avoiding any impact on subsequent printed circuit boards. This completes the removal and protection of surface static electricity on the printed circuit board after processing.

[0020] This invention provides a component positioning and welding fixture for a remote control. It has the following advantages:

[0021] 1. This invention, by adding and setting a conveying and discharging mechanism, enables the discharging of static electricity generated by conveying friction during the welding of metal spring contacts on the printed circuit board of a remote control. This avoids premature damage to low-power integrated circuits caused by static electricity through the contact between conductive rollers and the board surface. The cooperation between the conductive ring and the grounding wire can completely conduct static electricity to the ground, reducing potential component hazards before welding. On the other hand, the height of the metal frame can be adjusted by the limiting conductive bolts to accommodate printed circuit boards of different thicknesses, ensuring that the conductive rollers always have good contact with the board, guaranteeing the uniformity and stability of static electricity discharge, and providing safe board conditions for subsequent welding.

[0022] 2. By adding and setting a flexible positioning mechanism, this invention enables precise extension and retraction of the printed circuit board on the remote control during the welding of metal spring contacts. This mechanism, combined with a piezoelectric telescopic positioning arm and preset coordinates, and the real-time displacement data feedback from the capacitive sensor within the rubber seat, allows for rapid calibration of the printed circuit board to the target position, ensuring the positioning accuracy of the metal spring contact welding. Furthermore, the vacuum suction cup in the lower groove can uniformly adsorb and fix the board from the non-welding surface, avoiding deformation of the ultra-thin printed circuit board caused by traditional clamping. Simultaneously, the flexible rubber seat buffers pressure when in contact with the board, preventing physical damage to components. The self-rotating mounting base can also switch working parts, providing support for subsequent preheating and testing processes.

[0023] 3. By adding and setting a local preheating mechanism, this invention enables precise preheating of the soldering area of ​​the printed circuit board on the remote control during the welding of metal spring contacts. This prevents the carbon film from failing or the circuit board from bulging due to a sudden temperature rise during welding. At the same time, an infrared sensor monitors the temperature in real time, providing a basis for adjusting welding parameters and ensuring heating safety. Secondly, the laser welding arm can accurately complete the welding of metal spring contacts, and the loading robot arm can achieve automated loading, improving processing efficiency. The circulating cooler and strip heat sink quickly dissipate the welding heat, preventing high temperature diffusion from damaging surrounding components, ensuring stable temperature in the soldering area, and improving welding quality and board reliability.

[0024] 4. By adding and setting a removal and protection mechanism, this invention allows the ion wind generated by the ion fan in the mechanism to be concentrated and sprayed onto the welding area after being pressurized by the flat acceleration section during the welding process of the printed circuit board on the remote control. This not only completely eliminates the local static electricity generated during the welding process, preventing static electricity residue from causing hidden damage to the integrated circuit, but also blows the flexible grounding plate to contact the board, forming a secondary static electricity release channel. This provides a double guarantee for the static removal effect. After the welding is completed, the reset guide rib can drive the grounding plate to automatically reset, without hindering the subsequent board conveying, thus completely eliminating the static electricity hazard and improving the factory qualification rate and service life of the remote control. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0027] Figure 3 This is a partial structural diagram of the strip seat of the present invention;

[0028] Figure 4 This is a partial structural diagram of the metal frame of the present invention;

[0029] Figure 5 This is a partial structural diagram of the metal conductive seat of the present invention;

[0030] Figure 6 This is a schematic diagram of the internal structure of the processing seat of the present invention;

[0031] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A;

[0032] Figure 8 This is a top view of the internal structure of the processing seat of the present invention;

[0033] Figure 9 This is a partial structural diagram of the flexible ground surface of the present invention.

[0034] The components include: 1. Base; 2. Metal conductive seat; 3. Electrical box; 4. Strip seat; 5. Processing seat; 6. Laser welding arm; 7. Processing position; 8. Loading robotic arm; 9. Metal frame; 10. Conductive roller; 11. Conductive wire ring; 12. Conveyor belt; 13. Ion fan; 14. Grounding wire; 15. Limiting conductive bolt; 16. Adjusting column; 17. Piezoelectric telescopic positioning arm; 18. Air outlet box; 19. Lower groove; 20. Vacuum suction cup; 21. Circulating cooler; 22. Miniature heating seat; 23. Spin mounting seat; 24. Infrared sensor; 25. Rubber seat; 26. Strip heat sink; 27. Flexible grounding plate; 28. Flat acceleration part; 29. ​​Connecting piece; 30. Support base; 31. Reset guide rib. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see the appendix Figure 1 - Appendix Figure 2This invention provides a component positioning and welding fixture for a remote controller, including a base 1, a support base 30 at the bottom center of the base 1, and an electrical box 3 inside the support base 30 that provides control and power to the overall device.

[0037] Please see the appendix Figure 3 - Appendix Figure 5 The conveying and outputting mechanism is located at the top center of the base 1 and is used to convey the printed circuit board inside the remote control and to discharge the static electricity generated by friction on it.

[0038] The conveying and output mechanism includes a strip seat 4. The strip seat 4 is located at the top center of the base 1. A conveyor belt 12 for conveying and moving the remote control printed circuit board is located at the bottom inner side of the strip seat 4. A metal frame 9 is located at the upper inner side of the strip seat 4. Adjusting columns 16 are fixedly connected to the two corners near the front and rear sides of the metal frame 9. The adjusting columns 16 are respectively located at corresponding positions inside the strip seat 4. Limiting conductive bolts 15 are provided at the upper middle part of the front and rear sides of the strip seat 4. The ends of the limiting conductive bolts 15 extend into the fixing holes at the corresponding heights of the adjusting columns 16. Multiple conductive rollers 10 are rotatably connected at equal intervals inside the metal frame 9.

[0039] When the conveying and exporting mechanism is started, the processed printed circuit board is conveyed into the strip seat 4. The printed circuit board inside the strip seat 4 is conveyed and moved by the conveyor belt 12. During the conveying and moving of the printed circuit board, the upper surface of the printed circuit board comes into contact with the conductive rollers 10 on the metal frame 9. Therefore, the static electricity generated on the surface of the printed circuit board due to friction during the conveying process is conducted to the limiting conductive bolts 15 through the conductive rollers 10 and the metal frame 9 in sequence.

[0040] Furthermore, during the transport of printed circuit boards, the staff can adjust the height of the metal frame 9 inside the strip seat 4 according to the subsequent movement of the printed circuit board. When adjusting the height of the metal frame 9 and the conductive rollers 10 on it, the staff first fixes the limiting conductive bolts 15 on the strip seat 4, and then moves the metal frame 9 inside the strip seat 4 up and down. After the adjustment is completed, the staff can fix the metal frame 9 inside the strip seat 4 again with the limiting conductive bolts 15, thereby ensuring the conductivity uniformity of the conductive rollers 10 when facing printed circuit boards of different thicknesses.

[0041] The conveying and discharging mechanism also includes a metal conductive seat 2. The front and rear sides of the strip seat 4 are fixedly connected with the metal conductive seat 2. The outer wall of the limiting conductive bolt 15 is fitted with a conductive wire ring 11, and the bottom end of the conductive wire ring 11 is connected to the corresponding position of the metal conductive seat 2. The bottom center of the metal conductive seat 2 is provided with a grounding wire 14, and the end of the grounding wire 14 is in contact with the corresponding position of the top of the base 1.

[0042] The static electricity conducted on the limiting conductive bolt 15 is then guided by the conductive ring 11 into the metal conductive seat 2 on the strip seat 4 for temporary storage. The static electricity temporarily stored on the metal conductive seat 2 is then conducted to the base 1 through the grounding wire 14, and then introduced into the ground through the support base 30 at the bottom of the metal conductive seat 2. This ensures that the static electricity on the printed circuit board on the conveyor belt 12 in the strip seat 4 is completely eliminated, thus completing the conveying of the printed circuit board and the initial discharge of static electricity.

[0043] Please see the appendix Figure 5 - Appendix Figure 6 A flexible positioning mechanism is located on one side of the top center of the base 1 and is used to position the printed circuit board after it has been processed by the conveying and exporting mechanism.

[0044] The flexible positioning mechanism includes a processing seat 5. The processing seat 5 is fixedly connected to one side of the top center of the base 1. A processing position 7 is opened in the top center of the processing seat 5. A lower groove 19 is opened on the side of the bottom center of the processing position 7 near the strip seat 4.

[0045] When the flexible positioning mechanism is activated, the printed circuit board after being processed by the conveying and exporting mechanism is conveyed into the processing position 7 in the processing seat 5. At this time, the piezoelectric telescopic positioning arm 17 in the processing position 7 is activated. While being activated, the piezoelectric telescopic positioning arm 17 moves telescopically according to its preset key pad coordinates. While moving telescopically, it drives the spin mounting seat 23 and the rubber seat 25 at its bottom and the printed circuit board in the lower groove 19 to perform position positioning calibration.

[0046] While calibrating it, the capacitive sensor in the rubber seat 25 provides real-time feedback on the displacement data of the printed circuit board in the groove 19, thereby ensuring the accuracy of its position calibration. During this positioning process, the flexibility of the rubber seat 25 not only ensures the positioning accuracy of the printed circuit board, but also avoids physical damage to the components on the printed circuit board through the cushioning of the rubber material.

[0047] The flexible positioning mechanism also includes a piezoelectric telescopic positioning arm 17. The piezoelectric telescopic positioning arm 17 is provided in the lower middle part of the inner wall of the processing position 7 away from the strip seat 4. The telescopic end of the piezoelectric telescopic positioning arm 17 is provided with a self-rotating mounting seat 23 that can automatically step and rotate. A rubber seat 25 is provided on one end face of the self-rotating mounting seat 23. Capacitive sensors are provided inside the rubber seat 25. Multiple vacuum suction cups 20 are equidistantly arranged inside the lower groove 19.

[0048] After the printed circuit board in the lower groove 19 is positioned and calibrated, the vacuum chuck 20 in the lower groove 19 is activated. The vacuum chuck 20 generates negative pressure at the same time as it is activated, thereby uniformly adsorbing and fixing the non-soldering surface of the printed circuit board in the lower groove 19, avoiding warping of the board caused by pressure during subsequent processing of the printed circuit board, thus completing the positioning process of the printed circuit board before processing.

[0049] Please see the appendix Figure 7 - Appendix Figure 8 A local preheating mechanism is set on one side of the top center of the base 1, and is used to preheat and weld the carbon film position of the metal spring on the printed circuit board after the flexible positioning mechanism has been processed.

[0050] The local preheating mechanism includes an infrared sensor 24. An infrared sensor 24 for monitoring the temperature of the solder area of ​​the printed circuit board is provided on the side of the spin mount 23 away from the piezoelectric telescopic positioning arm 17. A miniature heating seat 22 for preheating the solder area of ​​the printed circuit board is provided on one end face of the spin mount 23. A laser welding arm 6 is provided in the middle of the front side of the top of the processing seat 5. A loading robotic arm 8 is provided in the middle of the rear side of the top of the processing seat 5.

[0051] When the local preheating mechanism is started, the spin mount 23 on the piezoelectric telescopic positioning arm 17 first rotates, causing the miniature heating seat 22 on the spin mount 23 to rotate to its bottom. Then, the piezoelectric telescopic positioning arm 17 extends and retracts the spin mount 23, so that the miniature heating seat 22 on the spin mount 23 is positioned above the soldering area of ​​the printed circuit board. Then, the miniature heating seat 22 on the spin mount 23 is activated and blows out hot air to continuously preheat the soldering area of ​​the printed circuit board, avoiding bulging and other phenomena caused by a sudden increase in temperature of the printed circuit board during soldering.

[0052] The local preheating mechanism also includes a circulating cooler 21. Circulating coolers 21 are provided on both sides of the bottom center of the processing position 7. Multiple strip-shaped heat dissipation seats 26 are equidistantly arranged inside the lower groove 19. The strip-shaped heat dissipation seats 26 are all connected to the inside of the circulating coolers 21 on both sides through connecting pipes.

[0053] Then, the laser welding arm 6 and the loading robotic arm 8 on the processing seat 5 are started. The loading robotic arm 8 picks up the metal spring to be welded and moves it to the soldering area of ​​the printed circuit board. Then, the laser welding arm 6 performs welding processing on it. During this welding process, the infrared sensor 24 on the spin mount 23 monitors the temperature of the soldering area on the printed circuit board in real time. At the same time, the heat on the printed circuit board is transferred to the strip heat sink 26 in real time. After the temperature of the strip heat sink 26 rises above the set value, the circulating cooler 21 in the processing position 7 is started. The circulating cooler 21 circulates and cools the cooling liquid in the strip heat sink 26, thereby ensuring its cooling effect on the printed circuit board, thus completing the local preheating and welding processing of the printed circuit board.

[0054] Please see the appendix Figure 8 - Appendix Figure 9 The protective mechanism is located on one side of the top center of the base 1 and is used to perform final local static electricity elimination treatment on the printed circuit board after processing.

[0055] The removal protection mechanism includes an air outlet box 18. The air outlet box 18 is located in the lower middle part of the inner wall of the processing position 7 away from the strip seat 4. A flat acceleration part 28 for accelerating and pressurizing the ion air is located at the end of the air outlet box 18. An ion fan 13 is located in the lower middle part of the outer wall of the processing position 5 away from the strip seat 4. The air outlet of the ion fan 13 is connected to the interior of the air outlet box 18 through a connecting pipe.

[0056] When the protective mechanism is activated, after the local preheating mechanism has finished processing the printed circuit board, the ion fan 13 on the processing seat 5 is started. The ion wind generated by the ion fan 13 enters the air outlet box 18. When the ion wind in the air outlet box 18 is discharged, it is pressurized and accelerated by the flat acceleration part 28 at its end. After being pressurized and accelerated, the ion wind is sprayed to the soldering area of ​​the printed circuit board. The surface static electricity on the soldering area of ​​the printed circuit board is eliminated by the sprayed ion wind.

[0057] The removal protection mechanism also includes a flexible grounding piece 27. A flexible grounding piece 27 is provided on one side of the middle part of the bottom end of the processing position 7. A connecting piece 29 is provided on the end of the flexible grounding piece 27, and the bottom end of the connecting piece 29 is connected to the corresponding position of the bottom end of the processing position 7. A reset guide rib 31 is provided at the edge of the flexible grounding piece 27 to assist its reset.

[0058] While the ionizing air is being sprayed in the air outlet box 18, the ionizing air blows the flexible grounding plate 27 in the processing position 7. The pressure of the ionizing air blows the originally S-shaped flexible grounding plate 27 into a straight state, so that the straightened flexible grounding plate 27 comes into contact with the printed circuit board in the lower groove 19, thereby forming an electrostatic discharge channel. At this time, the surface static electricity on the printed circuit board in the lower groove 19 is conducted through the flexible grounding plate 27 to the connecting piece 29, the processing seat 5, the base 1, the support base 30 and then to the ground, thereby completing the elimination of static electricity on the surface of the printed circuit board after soldering.

[0059] After the printed circuit board is processed, the ion air in the air outlet box 18 stops being discharged, and the flexible grounding plate 27 is no longer affected by pressure. At this time, the reset guide rib 31 on the flexible grounding plate 27 pulls it to reset to its original state, thereby avoiding the impact on the subsequent printed circuit board. This completes the removal and protection of static electricity on the surface of the printed circuit board after processing.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A component positioning and welding fixture for a remote controller, characterized in that, include, The base (1) has a support base (30) at the bottom center, and the support base (30) has an electrical box (3) inside to provide control and power to the whole equipment. The conveying and outputting mechanism is located at the top center of the base (1) and is used to convey the printed circuit board inside the remote control and to discharge the static electricity generated by friction on it. The conveying and output mechanism includes a strip seat (4), a strip seat (4) is provided at the top center of the base (1), a conveyor belt (12) for conveying and moving the remote control printed circuit board is provided at the bottom inner side of the strip seat (4), a metal frame (9) is provided at the upper inner side of the strip seat (4), an adjusting column (16) is fixedly connected to the two corners of the front and rear sides of the metal frame (9), and the adjusting column (16) is respectively located in the corresponding position inside the strip seat (4), a limiting conductive bolt (15) is provided at the upper middle part of the front and rear sides of the strip seat (4), and the end of the limiting conductive bolt (15) extends into the fixing hole at the corresponding height of the adjusting column (16), and multiple conductive rollers (10) are equidistantly rotatably connected inside the metal frame (9). A flexible positioning mechanism is set on one side of the top center of the base (1) for positioning the printed circuit board after it has been processed by the conveying and exporting mechanism. The flexible positioning mechanism includes a processing seat (5). The processing seat (5) is fixedly connected to one side of the top center of the base (1). A processing position (7) is opened in the top center of the processing seat (5). A lower groove (19) is opened on the side of the bottom center of the processing position (7) near the strip seat (4). The flexible positioning mechanism also includes a piezoelectric telescopic positioning arm (17). The piezoelectric telescopic positioning arm (17) is provided on the lower part of the inner wall of the processing position (7) away from the strip seat (4). The telescopic end of the piezoelectric telescopic positioning arm (17) is provided with a spin mounting seat (23) that can automatically step and rotate. A rubber seat (25) is provided on one end face of the spin mounting seat (23). Capacitive sensors are provided inside the rubber seat (25). Multiple vacuum suction cups (20) are equidistantly arranged inside the lower groove (19). A local preheating mechanism is set on one side of the top center of the base (1) for preheating and welding the carbon film position of the metal spring sheet on the printed circuit board after the flexible positioning mechanism has been processed. The local preheating mechanism includes an infrared sensor (24). An infrared sensor (24) for monitoring the temperature of the solder area of ​​the printed circuit board is provided on the side of the spin mount (23) away from the piezoelectric telescopic positioning arm (17). A miniature heating seat (22) for preheating the solder area of ​​the printed circuit board is provided on one end face of the spin mount (23). A laser welding arm (6) is provided in the middle of the front side of the top of the processing seat (5). A loading robot arm (8) is provided in the middle of the rear side of the top of the processing seat (5). The protective mechanism is located on one side of the top center of the base (1) and is used to perform the final local static electricity elimination treatment on the printed circuit board after processing. The removal and protection mechanism includes an air outlet box (18). The air outlet box (18) is provided on the lower middle part of the inner wall of the processing position (7) away from the strip seat (4). A flat acceleration part (28) for accelerating and pressurizing the ion wind is provided at the end of the air outlet box (18). An ion fan (13) is provided on the lower middle part of the outer wall of the processing seat (5) away from the strip seat (4). The air outlet of the ion fan (13) is connected to the interior of the air outlet box (18) through a connecting pipe.

2. The component positioning and welding fixture for a remote controller according to claim 1, characterized in that, The conveying and discharging mechanism also includes a metal conduction seat (2). The front and rear sides of the strip seat (4) are fixedly connected with metal conduction seats (2). The outer wall of the limiting conductive bolt (15) is fitted with a conduction wire ring (11). The bottom end of the conduction wire ring (11) is connected to the corresponding position of the metal conduction seat (2). The bottom center of the metal conduction seat (2) is provided with a grounding wire (14). The end of the grounding wire (14) is in contact with the corresponding position of the top of the base (1).

3. The component positioning and welding fixture for a remote controller according to claim 1, characterized in that, The local preheating mechanism also includes a circulating cooler (21). Both sides of the bottom center of the processing position (7) are provided with circulating coolers (21). Multiple strip heat sinks (26) are equidistantly arranged inside the lower groove (19). The strip heat sinks (26) are all connected to the inside of the circulating coolers (21) on both sides through connecting pipes.

4. The component positioning and welding fixture for a remote controller according to claim 1, characterized in that, The removal protection mechanism also includes a flexible grounding piece (27). A flexible grounding piece (27) is provided on one side of the middle part of the bottom end of the processing position (7). A connecting piece (29) is provided on the end of the flexible grounding piece (27). The bottom end of the connecting piece (29) is connected to the bottom end of the processing position (7) at the corresponding position. A reset guide rib (31) is provided at the edge of the flexible grounding piece (27) to assist its reset.

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