Auxiliary device for repairing welding spots of integrated circuit board

Abstract

The utility model provides an auxiliary device for repairing welding spots of an integrated circuit board. The auxiliary device for repairing the welding spots of the integrated circuit board comprises a bottom plate and a movable clamping plate, wherein a preheating mechanism, a lifting mechanism and a repairing mechanism are arranged on the bottom plate; the preheating mechanism comprises a placing table, a cavity, a fan, a heating box, a heating wire, a temperature sensor and an air conveying pipe, the placing table is fixedly installed at the top of the bottom plate, the cavity is formed in the placing table, the fan and the heating box are both fixedly installed at the top of the bottom plate, and the air outlet end of the fan is fixedly connected with the heating box; the heating wire is fixedly installed in the heating box, the temperature sensor is fixedly installed on the inner wall of the top of the heating box, and the gas conveying pipe is fixedly installed on one side of the heating box. The integrated circuit board welding spot repair auxiliary device provided by the utility model has the advantages that the circuit board can be preheated, the circuit board is prevented from being influenced by thermal stress during welding spot repair, and the welding spot repair effect is improved.

Description

An auxiliary device for repairing solder joints on an integrated circuit board Technical Field

[0001] This utility model belongs to the field of circuit board solder joint repair technology, and in particular relates to an auxiliary device for repairing solder joints on integrated circuit boards. Background Technology

[0002] During the manufacturing process of circuit boards, defective solder joints often occur, resulting in defective or unqualified products. In order to save costs, it is usually necessary to repair circuit boards with defective solder joints.

[0003] In related technologies, a circuit board electronic component solder joint repair device is disclosed, including a base and a placement plate. A movable frame is movably engaged on the placement plate, and a connecting screw is threaded into the threaded hole. A pressure plate is fixedly connected to the bottom end of the connecting screw. A solder absorbing roller and a linear motion assembly are respectively arranged at the bottom end of the support frame. A clamping sleeve is connected to the lower end of the linear motion assembly via a universal joint. This circuit board electronic component solder joint repair device uses a guide roller to guide the pulled-down solder absorbing strip and cover it on the solder joint to be repaired. The soldering iron tip is clamped in the clamping sleeve, and the linear drive assembly can directly drive the soldering iron tip to move linearly back and forth on the solder absorbing strip, ensuring the stability of the soldering iron tip and the pressure stability between the soldering iron tip and the circuit board during movement, reducing damage to the circuit board, and improving repair quality.

[0004] However, the above structure still has shortcomings. When repairing solder joints on a circuit board, the device cannot preheat the circuit board. Directly performing electric soldering can easily cause thermal stress on the circuit board, leading to material cracking or component failure.

[0005] Preheating the circuit board before spot welding has the following benefits: 1. Activates the flux; 2. Gradually removes moisture, preventing rapid evaporation of moisture during welding and resulting spatter; 3. Reduces thermal stress damage; 4. Improves welding quality.

[0006] Therefore, it is necessary to provide a new auxiliary device for repairing solder joints on integrated circuit boards to solve the above-mentioned technical problems. Summary of the Invention

[0007] The technical problem solved by this utility model is to provide an auxiliary device for solder joint repair of integrated circuit boards that can preheat the circuit board, avoid the influence of thermal stress on the circuit board during solder joint repair, and improve the solder joint repair effect.

[0008] To solve the above-mentioned technical problems, the integrated circuit board solder joint repair auxiliary device provided by this utility model includes: a base plate and a movable clamping plate, wherein the base plate is provided with a preheating mechanism, a lifting mechanism and a repair mechanism;

[0009] The preheating mechanism includes a placement platform, a cavity, a fan, a heating box, a heating wire, a temperature sensor, and a gas supply pipe. The placement platform is fixedly installed on the top of the base plate, the cavity is opened on the placement platform, the fan and the heating box are both fixedly installed on the top of the base plate, the air outlet of the fan is fixedly connected to the heating box, the heating wire is fixedly installed inside the heating box, the temperature sensor is fixedly installed on the top inner wall of the heating box, and the gas supply pipe is fixedly installed on one side of the heating box, with one end of the gas supply pipe fixedly connected to the placement platform.

[0010] As a further embodiment of this utility model, the lifting mechanism includes a column, a strip slot, a first screw, a first motor, a first internally threaded slider, and a rectangular frame. The column is fixedly installed on the top of the base plate, the strip slot is opened on one side of the column, the first screw is rotatably installed in the strip slot, the first motor is fixedly installed on the top of the column, the output shaft of the first motor is fixedly connected to the top end of the first screw, the first internally threaded slider is threaded onto the first screw, and the rectangular frame is fixedly installed on one side of the first internally threaded slider.

[0011] As a further embodiment of this utility model, the repair mechanism includes a second screw, a second motor, a strip slider, two fixing plates, a third screw, a third motor, a second internally threaded slider, a mounting plate, a spot welder, a camera, and an X-ray detection device. The second screw is rotatably mounted within a rectangular frame, the second motor is fixedly mounted on one side of the rectangular frame, and the output shaft of the second motor is fixedly connected to the second screw. The strip slider is threaded onto the second screw, and both fixing plates are fixedly mounted on the bottom of the strip slider. The third screw is rotatably mounted on the two fixing plates, and the third motor is fixedly mounted on the corresponding fixing plates. The output shaft of the third motor is fixedly connected to one end of the third screw. The second internally threaded slider is threaded onto the third screw, and the mounting plate is fixedly mounted on the bottom of the second internally threaded slider. The spot welder, camera, and X-ray detection device are all mounted on the bottom of the mounting plate.

[0012] As a further embodiment of this utility model, a fixed clamping plate and a strip plate are fixedly installed on the top of the base plate, and two electric telescopic rods are fixedly installed on the strip plate. The movable clamping plate is fixedly installed on the output shaft of the two electric telescopic rods.

[0013] As a further embodiment of this utility model, two guide slide rods are fixedly installed inside the rectangular frame, and both guide slide rods pass through the strip slider and are slidably connected to the strip slider.

[0014] As a further embodiment of this utility model, a guide groove is provided at the bottom of the strip slider, and a guide slider is slidably installed in the guide groove. The bottom of the guide slider is fixedly connected to the second internal thread slider.

[0015] Compared with related technologies, the integrated circuit board solder joint repair auxiliary device provided by this utility model has the following beneficial effects:

[0016] This invention, by setting a preheating mechanism, enables the circuit board to be preheated during electric welding repair;

[0017] This utility model, by setting up a lifting mechanism, enables the rectangular frame to move downward, so that the spot welding head of the spot welding machine is closer to the circuit board;

[0018] This invention, by setting up a repair mechanism, enables the adjustment of the position of the spot welding machine to repair solder joints at different locations on the circuit board. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a three-dimensional structural schematic diagram of the integrated circuit board solder joint repair auxiliary device provided by this utility model;

[0021] Figure 2 is a schematic diagram of the repair mechanism in this utility model;

[0022] Figure 3 is a partial cross-sectional view of the auxiliary device for repairing solder joints on integrated circuit boards provided by this utility model.

[0023] In the diagram: 1. Base plate; 2. Placement platform; 3. Cavity; 4. Fan; 5. Heating box; 6. Heating wire; 7. Temperature sensor; 8. Gas supply pipe; 9. Column; 10. Slotted section; 11. First screw; 12. First motor; 13. First internal threaded slider; 14. Rectangular frame; 15. Second screw; 16. Second motor; 17. Slotted slider; 18. Fixing plate; 19. Third screw; 20. Third motor; 21. Second internal threaded slider; 22. Mounting plate; 23. Spot welding machine; 24. Camera; 25. X-ray detection device; 26. Fixing clamp; 27. Slotted plate; 28. Electric telescopic rod; 29. ​​Moving clamp. Detailed Implementation

[0024] Please refer to Figures 1, 2, and 3. Figure 1 is a three-dimensional structural diagram of the integrated circuit board solder joint repair auxiliary device provided by this utility model; Figure 2 is a structural diagram of the repair mechanism in this utility model; and Figure 3 is a partial cross-sectional structural diagram of the integrated circuit board solder joint repair auxiliary device provided by this utility model. The integrated circuit board solder joint repair auxiliary device includes: a base plate 1 and a movable clamping plate 29. The base plate 1 is equipped with a preheating mechanism, a lifting mechanism, and a repair mechanism.

[0025] The preheating mechanism includes a placement platform 2, a cavity 3, a fan 4, a heating box 5, a heating wire 6, a temperature sensor 7, and a gas supply pipe 8. The placement platform 2 is fixedly installed on the top of the base plate 1. The cavity 3 is opened on the placement platform 2. The fan 4 and the heating box 5 are both fixedly installed on the top of the base plate 1. The air outlet of the fan 4 is fixedly connected to the heating box 5. The heating wire 6 is fixedly installed inside the heating box 5. The temperature sensor 7 is fixedly installed on the inner wall of the top of the heating box 5. The gas supply pipe 8 is fixedly installed on one side of the heating box 5, and one end of the gas supply pipe 8 is fixedly connected to the placement platform 2.

[0026] As shown in Figure 1, the lifting mechanism includes a column 9, a strip slot 10, a first screw 11, a first motor 12, a first internal thread slider 13, and a rectangular frame 14. The column 9 is fixedly installed on the top of the base plate 1. The strip slot 10 is opened on one side of the column 9. The first screw 11 is rotatably installed in the strip slot 10. The first motor 12 is fixedly installed on the top of the column 9. The output shaft of the first motor 12 is fixedly connected to the top end of the first screw 11. The first internal thread slider 13 is threaded onto the first screw 11. The rectangular frame 14 is fixedly installed on one side of the first internal thread slider 13.

[0027] By setting up a lifting mechanism, the rectangular frame 14 can be moved down, allowing the spot welding head of the spot welding machine 23 to approach the circuit board.

[0028] As shown in Figure 2, the repair mechanism includes a second screw 15, a second motor 16, a strip slider 17, two fixing plates 18, a third screw 19, a third motor 20, a second internally threaded slider 21, a mounting plate 22, a spot welding machine 23, a camera 24, and an X-ray detection device 25. The second screw 15 is rotatably mounted inside a rectangular frame 14, and the second motor 16 is fixedly mounted on one side of the rectangular frame 14. The output shaft of the second motor 16 is fixedly connected to the second screw 15, and the strip slider 17 is threaded onto the second screw 15. Both of the fixed plates 18 are fixedly installed on the bottom of the strip slider 17. The third screw 19 is rotatably installed on the two fixed plates 18. The third motor 20 is fixedly installed on the corresponding fixed plate 18. The output shaft of the third motor 20 is fixedly connected to one end of the third screw 19. The second internal thread slider 21 is threaded onto the third screw 19. The mounting plate 22 is fixedly installed on the bottom of the second internal thread slider 21. The spot welding machine 23, the camera 24, and the X-ray detection device 25 are all installed on the bottom of the mounting plate 22.

[0029] By setting up a repair mechanism, the position of the spot welder 23 can be adjusted to repair solder joints at different locations on the circuit board.

[0030] As shown in Figure 1, a fixed clamping plate 26 and a strip plate 27 are fixedly installed on the top of the base plate 1. Two electric telescopic rods 28 are fixedly installed on the strip plate 27, and a movable clamping plate 29 is fixedly installed on the output shaft of the two electric telescopic rods 28.

[0031] By setting up a fixed clamping plate 26, a strip plate 27, an electric telescopic rod 28, and a movable clamping plate 29, the circuit board can be clamped and fixed, preventing the circuit board from moving when repairing solder joints.

[0032] As shown in Figure 2, two guide slide rods are fixedly installed inside the rectangular frame 14. Both guide slide rods pass through the strip slider 17 and are slidably connected to the strip slider 17.

[0033] By setting a guide slide, the strip slider 17 can be restricted and guided, preventing the strip slider 17 from rotating with the second screw 15.

[0034] As shown in Figure 2, a guide groove is provided at the bottom of the strip slider 17, and a guide slider is slidably installed in the guide groove. The bottom of the guide slider is fixedly connected to the second internal thread slider 21.

[0035] By setting guide grooves and guide sliders, the second internal thread slider 21 can be guided when it moves, so that the second internal thread slider 21 can move smoothly.

[0036] The working principle of the integrated circuit board solder joint repair auxiliary device provided by this utility model is as follows:

[0037] First step: When using, place the circuit board on the top of the placement platform 2, start the electric telescopic rod 28, the electric telescopic rod 28 drives the moving clamp 29 to move, push the circuit board, cooperate with the fixed clamp 26 to clamp and fix the circuit board.

[0038] The second step: Start the fan 4 and heating wire 6. After the heating wire 6 heats the air, the hot air enters the cavity 3. The temperature is detected by the temperature sensor 7 and the heating temperature (90-130℃) is controlled to preheat the circuit board placed on top of the base plate 1.

[0039] The third step: Start the X-ray inspection device 25 to inspect the solder joints of the circuit board. Start the second motor 16 and the third motor 20 to adjust the position of the spot welding machine 23. Observe through the camera 24 to make the spot welding machine 23 directly above the solder joint to be repaired. Start the first motor 12, which drives the first screw 11 to move down. The first screw 11 drives the first internal thread slider 13 and the rectangular frame 14 to move down, so that the spot welding machine 23 moves down to contact the circuit board and repairs the solder joints of the circuit board.

[0040] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0041] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0042] Although embodiments of the present 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, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. An auxiliary device for repairing solder joints on an integrated circuit board, characterized in that, include: The system comprises a base plate and a movable clamping plate. The base plate is equipped with a preheating mechanism, a lifting mechanism, and a repair mechanism. The preheating mechanism includes a placement platform, a cavity, a fan, a heating box, a heating wire, a temperature sensor, and an air supply pipe. The placement platform is fixedly installed on the top of the base plate. The cavity is opened on the placement platform. The fan and the heating box are both fixedly installed on the top of the base plate. The air outlet of the fan is fixedly connected to the heating box. The heating wire is fixedly installed inside the heating box. The temperature sensor is fixedly installed on the inner top wall of the heating box. The air supply pipe is fixedly installed on one side of the heating box, and one end of the air supply pipe is fixedly connected to the placement platform.

2. The integrated circuit board solder joint repair auxiliary device according to claim 1, characterized in that: The lifting mechanism includes a column, a strip slot, a first screw, a first motor, a first internally threaded slider, and a rectangular frame. The column is fixedly installed on the top of the base plate. The strip slot is opened on one side of the column. The first screw is rotatably installed in the strip slot. The first motor is fixedly installed on the top of the column. The output shaft of the first motor is fixedly connected to the top end of the first screw. The first internally threaded slider is threaded onto the first screw. The rectangular frame is fixedly installed on one side of the first internally threaded slider.

3. The integrated circuit board solder joint repair auxiliary device according to claim 1, characterized in that: The repair mechanism includes a second screw, a second motor, a strip slider, two fixing plates, a third screw, a third motor, a second internally threaded slider, a mounting plate, a spot welder, a camera, and an X-ray detection device. The second screw is rotatably mounted within a rectangular frame, and the second motor is fixedly mounted on one side of the rectangular frame. The output shaft of the second motor is fixedly connected to the second screw. The strip slider is threaded onto the second screw. Both fixing plates are fixedly mounted on the bottom of the strip slider. The third screw is rotatably mounted on the two fixing plates, and the third motor is fixedly mounted on the corresponding fixing plates. The output shaft of the third motor is fixedly connected to one end of the third screw. The second internally threaded slider is threaded onto the third screw. The mounting plate is fixedly mounted on the bottom of the second internally threaded slider. The spot welder, camera, and X-ray detection device are all mounted on the bottom of the mounting plate.

4. The integrated circuit board solder joint repair auxiliary device according to claim 1, characterized in that: A fixed clamping plate and a strip plate are fixedly installed on the top of the base plate. Two electric telescopic rods are fixedly installed on the strip plate, and a movable clamping plate is fixedly installed on the output shaft of the two electric telescopic rods.

5. The integrated circuit board solder joint repair auxiliary device according to claim 2, characterized in that: Two guide slide rods are fixedly installed inside the rectangular frame. Both guide slide rods pass through the strip slider and are slidably connected to the strip slider.

6. The integrated circuit board solder joint repair auxiliary device according to claim 3, characterized in that: The bottom of the strip slider is provided with a guide groove, and a guide slider is slidably installed in the guide groove. The bottom of the guide slider is fixedly connected to the second internal thread slider.

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