PCBA circuit board welding equipment and process

Abstract

The invention relates to PCBA circuit board welding equipment and technology, and relates to the technical field of circuit board welding, the PCBA circuit board welding equipment comprises a machine body, a fixing frame and a welding assembly, the machine body is provided with a moving rod, the fixing frame is slidably arranged on the moving rod, the moving rod is provided with a moving assembly, and the moving assembly is used for driving the fixing frame to move. The fixing frame is provided with a fixing groove used for containing a circuit board, the welding assembly is arranged on the machine body and used for welding, and the machine body is provided with a preheating block used for preheating the circuit board. The PCBA circuit board welding device has the effect of improving the PCBA circuit board welding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board welding, and in particular to PCBA circuit board welding equipment and technology. Background Art

[0002] Printed circuit boards, also known as printed circuit boards, are important electronic components. They are the support of electronic components and the provider of circuit connections for electronic components. By soldering various electronic components on the circuit board, different circuit functions are achieved to make different PCBA circuit boards.

[0003] In the existing technology, the welding of electronic components on circuit boards is mostly done manually by workers. During the welding process, workers need to manually move the circuit board and manually weld, which is a cumbersome operation. When the number of welds is large, problems such as unstable welding quality and decreased welding speed are prone to occur, affecting the welding efficiency of the PCBA circuit board. Summary of the Invention

[0004] In order to improve the soldering efficiency of PCBA circuit boards, this application provides PCBA circuit board soldering equipment and processes.

[0005] The PCBA circuit board welding equipment and process provided in this application adopt the following technical solutions: PCBA circuit board welding equipment includes a body, a fixing frame and a welding assembly. The body is provided with a moving rod, the fixing frame is slidably arranged on the moving rod, the moving rod is provided with a moving assembly, the moving assembly is used to drive the fixing frame to move, the fixing frame is provided with a fixing groove for placing the circuit board, the welding assembly is arranged on the body and used for welding, and the body is provided with a preheating block, and the preheating block is used to preheat the circuit board.

[0006] By adopting the above technical solution, after the electrical components are inserted into the circuit board sockets, the circuit board is inserted into the slots of the fixing frame, and then the fixing frame is driven to move to the welding assembly by the moving assembly. During this process, the circuit board is preheated by the preheating block, and then welding is performed by the welding assembly. The movement and welding of the circuit board are driven by the mechanized assembly, which improves the convenience of welding, reduces the labor intensity of the operation, ensures the welding speed and accuracy, and improves the welding efficiency.

[0007] Preferably, the moving assembly includes a moving motor, a moving screw and a moving block, the moving rod is provided with a moving groove, the moving block is slidably set in the moving groove, the moving screw is rotatably set in the moving groove and threaded through the moving block, the moving motor is also set on the moving rod and the moving motor shaft is connected to the moving screw, and the moving block is connected to the fixed frame.

[0008] By adopting the above technical solution, the moving motor is started to drive the moving screw to rotate in the moving groove, thereby driving the moving block to move, thereby driving the fixed frame to move. The operation is simple and convenient, the convenience of welding is improved, and the efficiency of circuit board welding is improved.

[0009] Preferably, the fixed frame is slidably provided with a cover plate, and the cover plate is provided with a fixed block. The fixed block is inserted into the fixed frame and can rest against the surface of the circuit board. A transmission assembly is provided between the cover plate and the moving block, and the transmission assembly is used to drive the cover plate to move according to the movement of the moving block.

[0010] By adopting the above technical solution, the transmission assembly drives the cover plate to move when the moving block moves, so that the fixed block is inserted into the fixed frame and presses against the surface of the circuit board. At the same time, the fixed block presses against each electrical component, thereby improving the stability of the electrical components during welding and improving the welding quality.

[0011] Preferably, the transmission assembly includes a transmission threaded sleeve, a transmission gear, a transmission threaded rod and a transmission rack. The moving block is provided with a transmission cavity. The transmission threaded rod is arranged in the moving groove and passes through the moving block. The transmission threaded rod passes through the transmission cavity. The transmission threaded sleeve is arranged on the transmission threaded rod and is threadedly connected to the transmission threaded rod. The transmission threaded sleeve is rotatably arranged in the transmission cavity. The transmission gear is sleeved on the transmission threaded sleeve. The transmission rack is slidably inserted into the transmission cavity and meshes with the transmission gear. The transmission rack extends out of the transmission cavity and is connected to the cover plate.

[0012] By adopting the above technical solution, when the moving motor drives the moving screw to rotate, the moving block moves at the same time, and the movement of the transmission threaded sleeve in the moving cavity is driven to rotate because of the threaded connection of the transmission threaded rod, thereby driving the transmission gear to rotate, and moving through the meshing electric transmission rack to drive the cover plate to move, so that during the movement of the moving block, the cover plate descends and covers the fixed frame, and the fixed block is inserted into the fixed frame to press against the surface of the circuit board. This is completed with the help of transmission, and the operation is simple and convenient, thereby improving the convenience of use.

[0013] Preferably, the cover plate is provided with a plurality of auxiliary rods, and the fixing frame is provided with a plurality of auxiliary grooves, and the auxiliary rods are slidably inserted into the auxiliary grooves.

[0014] By adopting the above technical solution, the auxiliary rod is inserted into the auxiliary groove, thereby improving the stability of the cover plate when it moves up and down.

[0015] Preferably, a transmission spring is provided in the transmission cavity, and the transmission spring connects the inner wall of the transmission cavity and the transmission rack.

[0016] By adopting the above technical solution, when the moving block moves, the transmission assembly drives the transmission rack to move down and compresses the transmission spring. When the moving block moves to the top of the welding assembly for welding, the locking shaft function of the moving motor is used to enable the moving block to stay stably at the welding assembly. At the same time, when welding is completed, the shaft lock of the moving motor is released. At this time, the transmission spring recovers and pushes the transmission rack up, thereby driving the transmission threaded sleeve to rotate with the help of the transmission gear, and with the assistance of the thread of the transmission threaded rod, the transmission threaded sleeve drives the moving block to move and reset, thereby automatically completing the reset of the moving block after the circuit board is welded, thereby improving the convenience of use.

[0017] Preferably, a moving spring is provided in the moving groove, and the moving spring connects the inner wall of the moving groove and the moving block.

[0018] By adopting the above technical solution, the moving spring will be compressed when the moving block moves to the welding assembly. The recovery of the moving spring will help reset the moving block, thereby improving the stability of the moving block's reset, while reducing the pressure on the transmission spring and improving durability.

[0019] Preferably, the welding assembly includes a welding nozzle and a welding bracket, the machine body is slidingly provided with a welding disk, the welding bracket is arranged in the welding disk, the welding nozzle is detachably arranged on the welding bracket, the welding nozzle is used for welding, the machine body is provided with a sliding assembly, and the sliding assembly is used to drive the welding disk to slide.

[0020] By adopting the above technical solution, the welding plate is driven to move by the sliding component, so that the welding nozzle can be moved to various positions for welding, realizing selective wave soldering. Compared with the transmission wave soldering, the welding height of high plug-in materials is insufficient, resulting in the inability to fully cover the solder joints, and the inability to accurately control the solder filling rate, making it difficult to meet the requirement of 100% tinning in the holes. Selective wave soldering can adapt to the welding needs of high plug-in materials, break through the height limit of traditional wave soldering, and improve the stability of welding. The welding nozzle and the welding bracket are detachably connected, which is convenient for disassembling the welding nozzle for maintenance and replacement.

[0021] Preferably, the sliding assembly includes a first sliding motor, a first sliding screw, a first sliding block, a second sliding motor, a second sliding screw and a second sliding block, the body is provided with a first sliding groove, the first sliding block is slidably set in the first sliding groove, the first sliding screw is rotatably set in the first sliding groove and threaded through the first sliding block, the first sliding motor is set on the body and the first sliding motor shaft is inserted into the first sliding groove and connected to the first sliding screw, the first sliding block is provided with a second sliding groove, the second sliding block is set in the second sliding groove and connected to the welding disk, the second sliding screw is rotatably set in the second sliding groove and threaded through the second sliding block, the second sliding motor is set on the first sliding block and the second sliding motor shaft is inserted into the second sliding groove and connected to the second sliding screw.

[0022] By adopting the above technical solution, a dual-axis drive structure is formed through the motor screw structure, thereby driving the welding disk to move to various points in the plane, thereby improving the convenience of use.

[0023] The PCBA circuit board welding process includes the following steps: The first step is to insert the electrical components into the circuit board sockets and insert the circuit board into the fixing slots of the fixing frame. Start the moving assembly to move the fixing frame to the top of the welding plate, and start the preheating block to preheat the circuit board during this process. Step 2: Start the first sliding motor and the second sliding motor to drive the soldering plate to move, so that the soldering nozzle moves to each place where soldering is required to release solder for selective wave soldering; Step 3: Move the fixed frame by moving the components and remove the soldered circuit board.

[0024] By adopting the above technical solution, the mobile component drives the circuit board to move and preheat it before welding, which improves the convenience of use and reduces the labor intensity of the staff. At the same time, selective wave soldering is used to improve the stability and quality of each soldering point, thereby improving the overall quality and efficiency of welding.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The machine body, fixing frame, welding assembly, moving rod, moving assembly, fixing slot and preheating block are arranged. After the pins of the electrical components are inserted into the jacks of the circuit board, the circuit board is inserted into the fixing slot of the fixing frame. The fixing frame is driven to move on the moving rod of the machine body by the moving assembly, thereby driving the circuit board to move to the welding assembly. During this process, the circuit board is preheated by the preheating block, and then the circuit board is selectively wave soldered by the welding assembly, thereby completing the entire welding process. The operation is simple and convenient. Compared with manual welding, it reduces labor and lightness, ensures the speed and accuracy of large-scale welding, and improves welding efficiency. 2. By setting a moving motor, a moving screw, a moving block and a moving slot, when the fixed frame needs to be moved, the moving motor is started to drive the moving screw to rotate in the moving slot, thereby driving the moving block to move in the moving slot, thereby driving the movement of the fixed frame. The operation is simple and convenient, the convenience of use is improved, welding is convenient, and the efficiency of large-scale welding is improved; 3. By setting a cover plate, a fixing block, a transmission cavity, a transmission threaded sleeve, a transmission threaded rod, a transmission gear and a transmission rack, when the circuit board is inserted into the fixing slot and the moving assembly drives the fixing frame to move to the welding assembly, the transmission threaded sleeve in the transmission cavity rotates under the guidance of the transmission threaded rod, and the electric transmission rack descends through the engagement of the transmission gear, thereby driving the cover plate to move until it fits the fixing frame, so that the fixing block is inserted into the fixing frame to press against the front of the circuit board, thereby pressing against the electrical components to be welded, reducing the possibility of shaking of the electrical components during welding, and thus improving the quality of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an overall schematic diagram of the PCBA circuit board welding equipment provided in an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view used to show the structure of a moving component.

[0028] Figure 3 It is a cross-sectional view used to reflect the structure of the transmission component.

[0029] Figure 4 It is a schematic diagram used to reflect the structure of the sliding component.

[0030] Figure 5 This is a control block diagram of the PCBA circuit board welding equipment provided in an embodiment of the present application.

[0031] Explanation of reference numerals: 1. body; 11. moving rod; 111. moving groove; 112. moving spring; 12. control box; 121. controller; 122. control button; 13. preheating block; 14. first sliding groove; 2. fixing frame; 21. fixing groove; 22. auxiliary groove; 3. moving assembly; 31. moving motor; 32. moving screw rod; 33. moving block; 331. transmission chamber; 332. transmission spring; 4. cover plate; 41. auxiliary rod ;42. Fixed block;5. Transmission assembly;51. Transmission threaded rod;52. Transmission threaded sleeve;53. Transmission gear;54. Transmission rack;6. Welding assembly;61. Welding nozzle;62. Welding bracket;63. Welding disk;7. Sliding assembly;71. First sliding motor;72. First sliding screw;73. First sliding block;731. Second sliding groove;74. Second sliding motor;75. ​​Second sliding screw;76. Second sliding block. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The embodiment of the present application discloses a PCBA circuit board welding device. Figures 1 to 3 It includes a body 1, a fixing frame 2 and a welding assembly 6. Two movable rods 11 are provided on the body 1 along the length direction. The fixing frame 2 is slidably arranged on the movable rods 11. The fixing frame 2 is a frame-shaped frame with a side opening. A fixing slot 21 for inserting a circuit board is provided on the side of the opening of the fixing frame 2. After the circuit board is inserted into the fixing slot 21, the components on the surface are located in the frame of the fixing frame 2. The movable rod 11 is provided with a movable assembly 3 for driving the fixing frame 2 to move. The welding assembly 6 is provided on the body 1 and is used for welding. A preheating block 13 is provided on the surface of the body 1 between the two movable rods 11. The fixing frame 2 can pass over the preheating block 13. The preheating block 13 can be heated by an external circuit to heat the circuit board. In other embodiments, the body 1 can be provided with a shelf so that the preheating block 13 can be installed above the fixing frame 2. By using a mechanized component to drive the movement and welding of the circuit board, the convenience of welding is improved, while the labor intensity of the operation is reduced, the welding speed and accuracy are guaranteed, and the welding efficiency is improved.

[0034] For ease of use, refer to Figure 1 and Figure 2 The moving assembly 3 includes a moving motor 31, a moving screw 32 and a moving block 33 (the screw thread is not shown in the figure). A moving groove 111 is provided on the surface of the moving rod 11 along the length direction. The moving block 33 is adapted to be slidably arranged in the moving groove 111. The moving block 33 extends out of the moving groove 111 and is fixedly connected to the bottom wall of the fixed frame 2. The moving motor 31 is a servo motor with a shaft locking function. The moving motor 31 is fixedly set on the side wall of the moving rod 11. In other embodiments, a bracket can be provided on the body 1 to install the moving motor 31 so that the body 1 shares the gravity of the moving motor 31. The moving screw 32 is rotatably set in the moving groove 111 and is threaded through the moving block 33. The rotating shaft of the moving motor 31 is inserted into the moving groove 111 and is fixedly connected coaxially with the moving screw 32. Starting the moving motor 31 drives the moving screw 32 to rotate in the moving groove 111, thereby driving the moving block 33 to move, thereby driving the fixed frame 2 to move. The operation is simple and convenient.

[0035] In order to improve the quality of welding, refer to Figures 1 to 3A cover plate 4 is slidingly provided on the fixing frame 2. The cover plate 4 is provided with a fixed block 42 that can be inserted into the frame opening of the fixing frame 2 and rest against the surface of the circuit board. The fixed block 42 with a corresponding structure can be provided according to the components on the surface of the circuit board of different specifications. A transmission assembly 5 is provided between the cover plate 4 and the moving block 33. The transmission assembly 5 is used to drive the cover plate 4 to move according to the movement of the moving block 33. A plurality of auxiliary rods 41 are provided on the side wall of the cover plate 4, and a plurality of auxiliary grooves 22 are provided on the surface of the fixing frame 2. The auxiliary rods 41 are adapted to be inserted into the corresponding auxiliary grooves 22 and can slide in the auxiliary grooves 22. The transmission assembly 5 drives the cover plate 4 to move when the moving block 33 moves, so that the fixed block 42 is inserted into the fixing frame 2 and rests against the various electrical components on the surface of the circuit board during welding, thereby improving the stability of the electrical components during welding and improving the welding quality.

[0036] For ease of use, refer to Figure 2 and Figure 3 The transmission assembly 5 includes a transmission threaded sleeve 52, a transmission gear 53, a transmission threaded rod 51, and a transmission rack 54 (the threads are not shown in the figure). A transmission cavity 331 is provided inside the moving block 33. The transmission threaded rod 51 is fixedly arranged in the moving groove 111 and is arranged directly above the moving screw 32. The transmission threaded rod 51 passes through the moving block 33 but is not threadedly connected to the moving block 33. The transmission threaded rod 51 passes through the transmission cavity 331. The transmission gear 53 is fixedly sleeved on the transmission threaded sleeve 52. The transmission threaded sleeve 52 is adapted to be rotatably arranged in the transmission cavity 331 and sleeved on the transmission threaded rod 51 and is threadedly connected to the transmission threaded rod 51. The threads of the transmission threaded rod 51 are more dispersed than those of the moving screw 32, so that the number of rotations of the transmission threaded sleeve 52 is less when the moving block 33 moves. The transmission rack 54 slides from top to bottom into the transmission cavity 331 and meshes with the transmission gear 53. The upper portion of the transmission rack 54 extends out of the transmission cavity 331 and slides through the fixed frame 2 and is fixedly connected to the cover plate 4. A transmission spring 332 is installed within the transmission chamber 331, connecting the bottom wall of the transmission chamber 331 to the bottom wall of the transmission rack 54. A movement spring 112 is installed within the movement groove 111, connecting the inner wall of the movement groove 111 to the side wall of the movement block 33. When the movement block 33 moves, the transmission threaded sleeve 52 moves and rotates on the transmission threaded rod 51, thereby driving the transmission rack 54 to move via the transmission gear 53, completing the transmission, making operation simple and convenient.

[0037] For easy maintenance and replacement, refer to Figure 1 and Figure 4The welding assembly 6 includes a welding nozzle 61 and a welding bracket 62. An open welding plate 63 is slidably mounted on the surface of the machine body 1. The welding bracket 62 is vertically fixed within the welding plate 63. The welding nozzle 61 is removably mounted on the welding bracket 62 via bolts. The welding nozzle 61 performs spray welding of circuit board components via an external circuit. The machine body 1 is equipped with a sliding assembly 7 for driving the welding plate 63. The welding nozzle 61 is removably mounted via bolts, facilitating disassembly and maintenance.

[0038] To facilitate welding, refer to Figure 1 and Figure 4 The sliding assembly 7 includes a first sliding motor 71, a first sliding screw 72, a first sliding block 73, a second sliding motor 74, a second sliding screw 75, and a second sliding block 76 (the screw threads are not shown). A first sliding groove 14 is provided on the surface of the machine body 1. The first sliding block 73 is adapted to slide in the first sliding groove 14. The first sliding screw 72 is rotatably disposed in the first sliding groove 14 and threadedly penetrates the first sliding block 73. The first sliding motor 71 is mounted on the machine body 1, and its rotating shaft is inserted into the first sliding groove 14 and coaxially fixedly connected to the first sliding screw 72. A second sliding groove 731 is provided on the surface of the first sliding block 73, perpendicular to the first sliding groove 14. The second sliding block 76 is adapted to slide in the second sliding groove 731 and is fixedly connected to the bottom wall of the welding plate 63. The second sliding screw 75 is rotatably mounted in the second sliding slot 731 and threadedly extends through the second sliding block 76. The second sliding motor 74 is mounted on the first sliding block 73, and the second sliding motor 74's rotating shaft is inserted into the second sliding slot 731 and coaxially connected to the second sliding screw 75. This dual-axis movable structure drives the soldering plate 63 for selective wave soldering, making operation simple and convenient.

[0039] In order to further facilitate use and improve welding efficiency, refer to Figure 1 and Figure 5The machine body 1 is provided with a control box 12, which houses a PLC controller 121. The controller 121 is connected to the soldering nozzle 61, preheating block 13, first sliding motor 71, second sliding motor 74, and moving motor 31. A control button 122 is provided on the surface of the controller 121, which is connected to the controller 121's signal. The controller 121 is used to control the start and stop of each motor, preheating block 13, and soldering nozzle 61 according to the control button 122 and the number of revolutions of each motor, thereby achieving automatic control. During use, a worker inserts a circuit board into the fixing slot 21 and presses the control button 122. The controller 121 then activates the moving motor 31, driving the moving block 33 to move, and activates the preheating block 13, thereby moving the circuit board to the soldering nozzle 61. The controller 121 then locks the rotating shaft of the moving motor 31 and, according to a pre-programmed movement program based on the circuit board structure, controls the first sliding motor 71 and second sliding motor 74 to move the soldering nozzle 61 to various positions for selective wave soldering and completing the circuit board soldering. In other embodiments, a plurality of distance sensors may be provided to calculate the moving distances of the moving block 33 , the first sliding block 73 , and the second sliding block 76 , thereby improving the control accuracy.

[0040] The present application embodiment discloses a PCBA circuit board welding process, including the following steps: Step 1: Insert the electrical components into the circuit board sockets and insert the circuit board into the fixing slot 21 of the fixing frame 2. Press the control button 122, which activates the moving motor 31 through the controller 121 to move the fixing frame 2 to the top of the welding plate 63. During this process, the preheating block 13 is activated to preheat the circuit board. During this process, the cover plate 4 is driven down by the transmission assembly 5, so that the fixing block 42 contacts the components on the surface of the circuit board. Step 2: The controller 121 stops the moving motor 31 and locks the rotating shaft of the moving motor 31. At the same time, the controller 121 drives the soldering plate 63 to move by starting and stopping the first sliding motor 71 and the second sliding motor 74, so that the soldering nozzle 61 moves to each location where soldering is required to release solder for selective wave soldering. Step 3: The controller 121 locks the rotating shaft of the moving motor 31. The transmission spring 332 then returns to its original position, pushing the transmission rack 54 upwards and causing the transmission gear 53 to rotate. This in turn causes the cover plate 4 to rise and the transmission threaded sleeve 52 to rotate on the transmission threaded rod 51. This in turn causes the moving block 33 to move away from the welding assembly 6 in cooperation with the moving spring 112. Step 4: Remove the soldered circuit board from the fixing frame 2.

[0041] The implementation principle of the PCBA circuit board welding equipment and process of the embodiment of the present application is as follows: when in use, the staff inserts the circuit board into the fixing slot 21 and presses the control button 122. At this time, the controller 121 starts the moving motor 31 to drive the moving block 33 to move and compress the moving spring 112, and starts the preheating block 13, thereby driving the circuit board to move to the welding nozzle 61. During this process, the movement of the moving block 33 drives the transmission threaded sleeve 52 to rotate around the transmission threaded rod 51, thereby driving the transmission rack 54 to descend through the transmission gear 53 to compress the transmission spring 332, thereby making the cover plate 4 close to the fixing frame 2. When the circuit board moves to the top of the welding assembly 6, the cover plate 4 presses against the fixing frame 2 and makes the fixing block 42 insert into the fixing frame 2 and press against the surface of the circuit board; then the controller 121 locks the rotating shaft of the moving motor 31, and according to the movement program pre-recorded based on the circuit board structure, controls the first sliding motor 71 and the second sliding motor 74 to drive the welding nozzle 61 to move to various positions for selective wave soldering to complete the circuit board welding.

[0042] After welding is completed, the controller 121 turns off the first sliding motor 71 and the second sliding motor 74, and at the same time, the locking of the rotating shaft of the contact moving motor 31 is turned off. At this time, the transmission spring 332 is restored to push the transmission rack 54 up, so that the cover plate 4 is away from the fixed frame 2. At the same time, the transmission threaded sleeve 52 is driven to rotate through the transmission gear 53, thereby driving the moving block 33 to move and reset under the guidance of the transmission threaded rod 51. During this process, the compressed moving spring 112 pushes the moving block 33 to move to assist in resetting. At the same time, during this process, the moving motor 31 is in a stopped state and the rotating shaft rotates following the movement of the moving block 33. Afterwards, the staff can remove the welded circuit board from the fixed frame 2. Compared with manual welding, this application improves the convenience of welding, reduces the labor intensity of operation, ensures welding speed and accuracy, and improves welding efficiency.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. PCBA circuit board welding equipment, characterized by: The invention comprises a machine body (1), a fixing frame (2) and a welding assembly (6), wherein the machine body (1) is provided with a moving rod (11), the fixing frame (2) is slidably arranged on the moving rod (11), the moving rod (11) is provided with a moving assembly (3), the moving assembly (3) is used to drive the fixing frame (2) to move, the fixing frame (2) is provided with a fixing groove (21) for placing a circuit board, the welding assembly (6) is arranged on the machine body (1) and is used for welding, and the machine body (1) is provided with a preheating block (13), and the preheating block (13) is used to preheat the circuit board.

2. The PCBA circuit board welding equipment according to claim 1, characterized in that: The moving assembly (3) comprises a moving motor (31), a moving screw (32) and a moving block (33); the moving rod (11) is provided with a moving groove (111); the moving block (33) is slidably arranged in the moving groove (111); the moving screw (32) is rotatably arranged in the moving groove (111) and is threadedly penetrated by the moving block (33); the moving motor (31) is also arranged on the moving rod (11) and the rotating shaft of the moving motor (31) is connected to the moving screw (32); and the moving block (33) is connected to the fixed frame (2).

3. The PCBA circuit board welding equipment according to claim 2, characterized in that: The fixing frame (2) is slidably provided with a cover plate (4), the cover plate (4) is provided with a fixing block (42), the fixing block (42) is inserted into the fixing frame (2) and can abut against the surface of the circuit board, a transmission assembly (5) is provided between the cover plate (4) and the moving block (33), and the transmission assembly (5) is used to drive the cover plate (4) to move according to the movement of the moving block (33).

4. The PCBA circuit board welding equipment according to claim 3, characterized in that: The transmission assembly (5) comprises a transmission threaded sleeve (52), a transmission gear (53), a transmission threaded rod (51) and a transmission rack (54); the moving block (33) is provided with a transmission cavity (331); the transmission threaded rod (51) is arranged in the moving groove (111) and passes through the moving block (33); the transmission threaded rod (51) passes through the transmission cavity (331); the transmission threaded sleeve (52) is arranged on the transmission threaded rod (51) and is threadedly connected to the transmission threaded rod (51); the transmission threaded sleeve (52) is rotatably arranged in the transmission cavity (331); the transmission gear (53) is sleeved on the transmission threaded sleeve (52); the transmission rack (54) is slidably inserted into the transmission cavity (331) and meshed with the transmission gear (53); the transmission rack (54) extends out of the transmission cavity (331) and is connected to the cover plate (4).

5. The PCBA circuit board welding equipment according to claim 4, characterized in that: The cover plate (4) is provided with a plurality of auxiliary rods (41), the fixing frame (2) is provided with a plurality of auxiliary grooves (22), and the auxiliary rods (41) are slidably inserted into the auxiliary grooves (22).

6. The PCBA circuit board welding equipment according to claim 4, characterized in that: A transmission spring (332) is provided in the transmission cavity (331), and the transmission spring (332) connects the inner wall of the transmission cavity (331) and the transmission rack (54).

7. The PCBA circuit board welding equipment according to claim 6, characterized in that: A moving spring (112) is provided in the moving groove (111), and the moving spring (112) connects the inner wall of the moving groove (111) and the moving block (33).

8. The PCBA circuit board welding equipment according to claim 1, characterized in that: The welding assembly (6) comprises a welding nozzle (61) and a welding bracket (62); the machine body (1) is slidably provided with a welding disk (63); the welding bracket (62) is arranged in the welding disk (63); the welding nozzle (61) is detachably provided on the welding bracket (62); the welding nozzle (61) is used for welding; the machine body (1) is provided with a sliding assembly (7); the sliding assembly (7) is used for driving the welding disk (63) to slide.

9. The PCBA circuit board welding equipment according to claim 8, characterized in that: The sliding assembly (7) comprises a first sliding motor (71), a first sliding screw (72), a first sliding block (73), a second sliding motor (74), a second sliding screw (75) and a second sliding block (76); the machine body (1) is provided with a first sliding groove (14); the first sliding block (73) is slidingly arranged in the first sliding groove (14); the first sliding screw (72) is rotatably arranged in the first sliding groove (14) and is threadedly passed through the first sliding block (73); the first sliding motor (71) is provided on the machine body (1) and the rotating shaft of the first sliding motor (71) is Inserted into the first sliding groove (14) and connected to the first sliding screw (72), the first sliding block (73) is provided with a second sliding groove (731), the second sliding block (76) is provided in the second sliding groove (731) and connected to the welding disk (63), the second sliding screw (75) is rotatably provided in the second sliding groove (731) and is threadedly passed through the second sliding block (76), the second sliding motor (74) is provided on the first sliding block (73) and the rotating shaft of the second sliding motor (74) is inserted into the second sliding groove (731) and is connected to the second sliding screw (75).

10. A PCBA circuit board welding process, used for the PCBA circuit board welding equipment of claim 9, characterized in that: The steps include: The first step is to insert the electrical component into the circuit board socket and insert the circuit board into the fixing slot (21) of the fixing frame (2), start the moving component (3) to drive the fixing frame (2) to move above the welding plate (63), and start the preheating block (13) to preheat the circuit board during this process; Step 2: Start the first sliding motor (71) and the second sliding motor (74) to drive the soldering plate (63) to move, so that the soldering nozzle (61) moves to each location where soldering is required to release solder for selective wave soldering; The third step is to move the fixing frame (2) by the moving component (3) and remove the soldered circuit board.

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