Automatic welding device for PCB (Printed Circuit Board) power device

Abstract

The invention relates to the technical field of automatic welding, in particular to a PCB power device automatic welding device which comprises an automatic welding machine, a bottom plate is fixedly connected to the lower end of the automatic welding machine, a welding frame is fixedly connected to the lower end of the bottom plate, an electric soldering iron is fixedly connected to the lower surface of the welding frame, and a fixing column is arranged below the bottom plate. According to the tin feeding device, a small rotating rod can be driven to rotate through a rotating speed adjusting device and a motor in the tin feeding device, then a large adjusting wheel and a small adjusting wheel are driven to rotate, accurate adjustment of the rotating speed of an inner rotating rod is achieved through matched use of a speed adjusting fork, the rotating speed of the inner rotating rod is adjusted, and the tin feeding device is convenient to use. According to the design, the sending-out speed of the solder wire in the welding process can be flexibly adjusted according to actual needs, so that the stability and the consistency of the welding quality are ensured, and the accurate control requirements under different welding requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of automatic welding, in particular to an automatic welding device for power devices on a PCB. Background Art

[0002] With the rapid development of the electronics manufacturing industry, PCB boards are the core components of electronic devices. The welding quality and efficiency of power devices on them have an important impact on product performance and production efficiency. However, in the existing PCB power device welding process, there are a series of technical and operational challenges.

[0003] In the prior art, the conveying of solder wire often adopts the traditional mechanical pushing or pneumatic pushing method. Due to the relatively soft material of the solder wire, these methods are prone to knotting, entanglement and clogging during the conveying process, resulting in reduced welding efficiency and unstable welding quality. In addition, the traditional tin feeding method lacks precision in controlling the tin feeding speed, and it is difficult to flexibly adjust according to welding requirements, which further affects the welding effect. In terms of welding speed, the existing welding devices often lack an accurate speed adjustment mechanism and cannot achieve accurate control of the solder wire feeding speed. This results in the solder wire feeding speed not matching the moving speed of the welding head during the welding process, resulting in inconsistency in welding quality and welding defects. At the same time, the existing welding devices also have deficiencies in adjusting the angle and position of the tin feeding tube. Due to the diverse layout of power devices on the PCB board, different requirements are put forward for the angle and position of the tin feeding tube. However, the existing devices often cannot achieve flexible adjustment of the tin feeding tube, which limits the adaptability and flexibility of the welding device and cannot meet the diversified welding requirements. To this end, we propose an automatic welding device for PCB power devices to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an automatic soldering device for power devices on a PCB board to solve the problems raised in the above-mentioned background technology.

[0005] The technical solution of the present invention is: an automatic welding device for PCB power devices, comprising an automatic welding machine, the lower end of the automatic welding machine is fixedly connected to a base plate, the lower end of the base plate is fixedly connected to a welding frame, the lower surface of the welding frame is fixedly connected to an electric soldering iron, a fixed column is arranged below the base plate, the lower end of the fixed column is rotatably connected to the fixed frame, a tin feeding tube is arranged in the fixed frame, the surface of the tin feeding tube is fixedly connected to two symmetrically arranged connecting columns, both of the two connecting columns are rotatably connected to the inner wall of the fixed frame, the inner wall of the tin feeding tube is rotatably connected to an inner rotating rod, a spiral groove is provided on the surface of the inner rotating rod, a large gear is fixedly connected to the surface of the inner rotating rod, a small gear is fixedly connected to the upper end of the inner rotating rod, a wire tube is arranged above the inner rotating rod, the wire tube is fixedly connected to the inner wall of the spiral groove, a speed regulating device is arranged on the right side of the tin feeding tube, and an angle regulating device is arranged in the fixed frame.

[0006] Preferably, the speed regulating device includes a fixed block, which is fixedly connected to the surface of the tin feeding tube, and a small rotating rod is rotatably connected to the upper surface of the fixed block, and a motor is fixedly connected to the upper end of the small rotating rod, and a large adjusting wheel is provided on the surface of the small rotating rod, and a small adjusting wheel is provided on the surface of the small rotating rod, and a speed regulating fork is provided on the surface of the small rotating rod.

[0007] Preferably, the angle adjustment device includes an angle wheel, which is fixedly connected to the surface of a front connecting column, a manual rotating rod is provided in the fixing frame, the front end of the manual rotating rod is fixedly connected to the knob, the surface of the angle wheel is meshingly connected to the driving wheel, a first bevel gear is provided in the fixing frame, the surface of the manual rotating rod is sleeved with an angle fork, a second bevel gear is provided above the fixing frame, the upper end of the second bevel gear is fixedly connected to a movable rotating rod, the surface of the movable rotating rod is fixedly connected to a surrounding gear, the surface of the surrounding gear is meshingly connected to a center gear, the center gear is fixedly connected to the surface of the fixed column, the fixed column is fixedly connected to the lower surface of the base plate, the lower surface of the base plate is provided with an annular groove, and the movable rotating rod is slidably connected to the inner wall of the annular groove.

[0008] Preferably, the inner walls of the large adjusting wheel and the small adjusting wheel are each provided with two symmetrically arranged grooves, and the surface of the small rotating rod is fixedly connected with two symmetrically arranged long strips, and the grooves match the long strips.

[0009] Preferably, the left end of the manual rotating rod is rotatably connected to the inner wall of the fixing frame, and the right end of the manual rotating rod passes through the inner walls of the driving wheel and the first bevel gear and extends to the front of the fixing frame.

[0010] Preferably, the inner walls of the driving wheel and the first bevel gear are each provided with two symmetrically arranged sliding grooves, and the surface of the manual rotating rod is fixedly connected to two symmetrically arranged sliding bars, and the sliding grooves match the sliding bars.

[0011] Preferably, the speed regulating fork is rotatably connected to the lower end of the large regulating wheel, and the speed regulating fork is rotatably connected to the upper end of the small regulating wheel.

[0012] Preferably, the angle fork is rotatably connected to the right end of the driving wheel, and the angle fork is rotatably connected to the left end of the first bevel gear. The present invention provides an automatic welding device for PCB power devices through improvements, which has the following improvements and advantages compared with the prior art:

[0013] First, the present invention realizes the smooth and continuous conveying of solder wire through the spiral groove structure on the surface of the inner rotating rod and the tin feeding method driven by the motor. Since the solder wire is relatively soft, the traditional tin feeding method is prone to problems such as knotting and clogging. The device guides the solder wire through the spiral groove, so that the solder wire can maintain a certain tension and sequence during the conveying process, effectively avoiding these problems. This not only improves the welding efficiency, but also reduces the equipment failure rate caused by solder wire clogging, ensuring the stability and reliability of the welding process.

[0014] Second, in the present invention, through the speed regulating device in the device, the motor drives the small rotating rod to rotate, thereby driving the rotation of the large adjusting wheel and the small adjusting wheel. Through the coordinated use of the speed regulating fork, the precise adjustment of the speed of the inner rotating rod is achieved. This design allows the feeding speed of the solder wire during the welding process to be flexibly adjusted according to actual needs, thereby ensuring the stability and consistency of the welding quality and meeting the precise control requirements under different welding needs.

[0015] Thirdly, the present invention realizes flexible adjustment of the tin feeding tube in the vertical direction and horizontal position by setting an angle adjustment device and cooperating with components such as a manual rotating rod, a driving wheel, a first bevel gear and a second bevel gear. This design enables the angle and position of the tin feeding tube to be conveniently adjusted according to the power device layout and welding requirements on the PCB board during the welding process, thereby ensuring the accuracy and consistency of the welding points. At the same time, through the meshing relationship between the surrounding gear and the central gear, the movement and adjustment of the tin feeding tube in the plane can also be realized, further enhancing the adaptability and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the fixing frame of the present invention;

[0019] Figure 3 It is a schematic diagram of the inner rotating rod structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the angle wheel structure of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the manual rotating rod of the present invention;

[0022] Figure 6 It is a schematic diagram of the annular groove structure of the present invention;

[0023] Figure 7 for Figure 1 Enlarged structural diagram at A in the middle.

[0024] Description of reference numerals:

[0025] 1. Automatic welding machine; 2. Bottom plate; 3. Welding frame; 4. Electric soldering iron; 5. Fixed column; 6. Fixed frame; 7. Tin feeding tube; 8. Connecting column; 9. Inner rotating rod; 10. Spiral groove; 11. Large gear; 12. Small gear; 13. Fixed block; 14. Small rotating rod; 15. Motor; 16. Large adjusting wheel; 17. Small adjusting wheel; 18. Speed ​​regulating fork; 19. Angle wheel; 20. Manual rotating rod; 21. Knob; 22. Driving wheel; 23. First bevel gear; 24. Angle fork; 25. Second bevel gear; 26. Movable rotating rod; 27. Surrounding gear; 28. Center gear; 29. ​​Annular groove; 30. Wire tube. DETAILED DESCRIPTION

[0026] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present invention provides an automatic soldering device for power devices on a PCB board through improvement. The technical solution of the present invention is:

[0028] like Figure 1 - Figure 6As shown, an automatic welding device for power devices on a PCB board comprises an automatic welding machine 1, wherein the lower end of the automatic welding machine 1 is fixedly connected to a base plate 2, the lower end of the base plate 2 is fixedly connected to a welding frame 3, the lower surface of the welding frame 3 is fixedly connected to an electric soldering iron 4, a fixed column 5 is arranged below the base plate 2, the lower end of the fixed column 5 is rotatably connected to a fixing frame 6, a tin feeding tube 7 is arranged inside the fixing frame 6, the surface of the tin feeding tube 7 is fixedly connected to two symmetrically arranged connecting columns 8, both connecting columns 8 are rotatably connected to the inner wall of the fixing frame 6, an inner rotating rod 9 is rotatably connected to the inner wall of the tin feeding tube 7, a spiral groove 10 is provided on the surface of the inner rotating rod 9, a large gear 11 is fixedly connected to the surface of the inner rotating rod 9, a small gear 12 is fixedly connected to the upper end of the inner rotating rod 9, a wire tube 30 is arranged above the inner rotating rod 9, the wire tube 30 is fixedly connected to the inner wall of the spiral groove 10, a speed regulating device is arranged on the right side of the tin feeding tube 7, and an angle regulating device is arranged inside the fixing frame 6.

[0029] Furthermore, the speed regulating device includes a fixed block 13, which is fixedly connected to the surface of the tin feeding tube 7. A small rotating rod 14 is rotatably connected to the upper surface of the fixed block 13. The upper end of the small rotating rod 14 is fixedly connected to a motor 15. A large adjusting wheel 16 is sleeved on the surface of the small rotating rod 14. A small adjusting wheel 17 is sleeved on the surface of the small rotating rod 14. A speed regulating fork 18 is sleeved on the surface of the small rotating rod 14. Through the drive of the motor 15 and the mutual cooperation of the large adjusting wheel 16, the small adjusting wheel 17 and the speed regulating fork 18, the precise adjustment of the tin wire delivery speed in the tin feeding tube 7 can be achieved, thereby ensuring stability and accuracy during the welding process.

[0030] Furthermore, the angle adjustment device includes an angle wheel 19, which is fixedly connected to the surface of the front connecting column 8, a manual rotating rod 20 is arranged in the fixing frame 6, and a knob 21 is fixedly connected to the front end of the manual rotating rod 20, and the surface of the angle wheel 19 is meshedly connected to the driving wheel 22, a first bevel gear 23 is arranged in the fixing frame 6, and an angle fork 24 is sleeved on the surface of the manual rotating rod 20, and a second bevel gear 25 is arranged above the fixing frame 6, and a movable rotating rod 26 is fixedly connected to the upper end of the second bevel gear 25, and a surrounding gear 27 is fixedly connected to the surface of the movable rotating rod 26, and a central gear 28 is meshedly connected to the surface of the fixing column 5, and the fixing column 5 is fixedly connected to the lower surface of the base plate 2, and an annular groove 29 is opened on the lower surface of the base plate 2, and the movable rotating rod 26 is slidably connected to the inner wall of the annular groove 29, and by setting the annular groove 29, the movable rotating rod 26 can slide in the annular groove 29 while rotating, thereby realizing the adjustment of the orientation between the electric soldering iron 4.

[0031] Furthermore, the inner walls of the large adjusting wheel 16 and the small adjusting wheel 17 are provided with two symmetrically arranged grooves, and the surface of the small rotating rod 14 is fixedly connected with two symmetrically arranged long strips, and the grooves match the long strips. By setting the grooves and the long strips, the large adjusting wheel 16 and the small adjusting wheel 17 can be rotated while being able to move on the small rotating rod 14 through the cooperation of the grooves and the long strips.

[0032] Furthermore, the left end of the manual rotating rod 20 is rotatably connected to the inner wall of the fixed frame 6, and the right end of the manual rotating rod 20 passes through the inner walls of the driving wheel 22 and the first bevel gear 23 and extends to the front of the fixed frame 6. The manual rotating rod 20 passes through the inner walls of the driving wheel 22 and the first bevel gear 23 to achieve a direct transmission connection with these components.

[0033] Furthermore, the inner walls of the driving wheel 22 and the first bevel gear 23 are provided with two symmetrically arranged sliding grooves, and the surface of the manual rotating rod 20 is fixedly connected with two symmetrically arranged sliding bars, and the sliding grooves match the sliding bars. By setting the sliding grooves and the sliding bars, the driving wheel 22 and the first bevel gear 23 can move on the manual rotating rod 20 when they rotate.

[0034] Furthermore, the speed regulating fork 18 is rotationally connected to the lower end of the large regulating wheel 16, and the speed regulating fork 18 is rotationally connected to the upper end of the small regulating wheel 17. The speed regulating fork 18 is rotationally connected to the large regulating wheel 16 and the small regulating wheel 17, so that when the large regulating wheel 16 and the small regulating wheel 17 rotate, they will not rotate together, and can also drive the large regulating wheel 16 and the small regulating wheel 17 to move together when the speed regulating fork 18 moves.

[0035] Furthermore, the angle fork 24 is rotationally connected to the right end of the driving wheel 22, and the angle fork 24 is rotationally connected to the left end of the first bevel gear 23. The angle fork 24 is rotationally connected to the driving wheel 22 and the first bevel gear 23, so that when the driving wheel 22 and the first bevel gear 23 rotate, they will not rotate together, and can also drive the driving wheel 22 and the first bevel gear 23 to move together when the angle fork 24 moves.

[0036] Working principle: In the initial state, the solder wire is placed in the spiral groove 10 of the inner rotating rod 9 through the wire tube 30. At this time, the small gear 12 is in meshing with the large adjusting wheel 16, and the small adjusting wheel 17 is not in contact with the large gear 11. When the motor 15 is turned on, it will drive the small rotating rod 14 to rotate. The rotation of the small rotating rod 14 will drive the large adjusting wheel 16 to rotate together, and then drive the small gear 12 to rotate through the meshing relationship. The rotation of the small gear 12 will cause the inner rotating rod 9 to rotate. The solder wire is sent out from the port of the tin feeding tube 7 under the guidance of the spiral groove 10. The sent solder wire cooperates with the heat of the electric soldering iron 4 to realize the welding of power devices on the PCB board. If the solder wire is sent out too fast , the speed of the inner rotating rod 9 can be adjusted by the speed regulating fork 18. When the speed regulating fork 18 is moved downward, it will drive the large regulating wheel 16 and the small regulating wheel 17 to move at the same time. Since the inner walls of the large regulating wheel 16 and the small regulating wheel 17 are provided with grooves matching the long strips, they will move along the long strips. As the large regulating wheel 16 moves, it will gradually disengage from the small gear 12, while the small regulating wheel 17 will gradually contact and mesh with the large gear 11. Since the gear sizes and teeth of the small regulating wheel 17 and the large gear 11 are different, the speed of the inner rotating rod 9 will be different. The rotation of the knob 21 will drive the driving wheel 22 to rotate through the manual rotating rod 20, thereby rotating the angle wheel 19, and the rotation of the angle wheel 19 will drive the tin feeding tube 7 to make an arc motion with the connecting column 8 as the center, thereby realizing the angle adjustment. If it is necessary to adjust the angle between the tin feeding tube 7 and the electric soldering iron 4, The angle fork 24 can be moved relative to the position. The movement of the angle fork 24 will drive the driving wheel 22 and the first bevel gear 23 to move together. When the driving wheel 22 is separated from the angle wheel 19, the first bevel gear 23 will contact and mesh with the second bevel gear 25. At this time, turn the knob 21 again, and the rotation of the manual rotating rod 20 will drive the second bevel gear 25 to rotate through the first bevel gear 23. The rotation of the second bevel gear 25 will cause the movable rotating rod 26 to rotate, and then drive the tin feeding tube 7 to move together through the meshing relationship between the surrounding gear 27 and the center gear 28, thereby realizing the position adjustment.

[0037] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PCB board power device automatic welding device, comprising an automatic welding machine (1), characterized in that: The lower end of the automatic welding machine (1) is fixedly connected to a base plate (2), the lower end of the base plate (2) is fixedly connected to a welding frame (3), the lower surface of the welding frame (3) is fixedly connected to an electric soldering iron (4), a fixed column (5) is arranged below the base plate (2), the lower end of the fixed column (5) is rotatably connected to a fixed frame (6), a tin delivery tube (7) is arranged inside the fixed frame (6), and the surface of the tin delivery tube (7) is fixedly connected to two symmetrically arranged connecting columns (8), and the two connecting columns (8) are both rotatably connected to the inner wall of the fixed frame (6). The inner wall of the tin delivery tube (7) is rotatably connected to an inner rotating rod (9), a spiral groove (10) is provided on the surface of the inner rotating rod (9), a large gear (11) is fixedly connected to the surface of the inner rotating rod (9), a small gear (12) is fixedly connected to the upper end of the inner rotating rod (9), a wire tube (30) is arranged above the inner rotating rod (9), and the wire tube (30) is fixedly connected to the inner wall of the spiral groove (10), a speed regulating device is arranged on the right side of the tin delivery tube (7), and an angle regulating device is arranged in the fixing frame (6).

2. The automatic soldering device for power devices on a PCB according to claim 1, characterized in that: The speed regulating device comprises a fixed block (13), the fixed block (13) is fixedly connected to the surface of the tin feeding tube (7), the upper surface of the fixed block (13) is rotatably connected to a small rotating rod (14), the upper end of the small rotating rod (14) is fixedly connected to a motor (15), the surface of the small rotating rod (14) is sleeved with a large regulating wheel (16), the surface of the small rotating rod (14) is sleeved with a small regulating wheel (17), and the surface of the small rotating rod (14) is sleeved with a speed regulating fork (18).

3. The automatic soldering device for power devices on a PCB according to claim 1, characterized in that: The angle adjustment device comprises an angle wheel (19), the angle wheel (19) is fixedly connected to the surface of a front connecting column (8), a manual rotating rod (20) is arranged in the fixing frame (6), a knob (21) is fixedly connected to the front end of the manual rotating rod (20), a driving wheel (22) is meshedly connected to the surface of the angle wheel (19), a first bevel gear (23) is arranged in the fixing frame (6), an angle fork (24) is sleeved on the surface of the manual rotating rod (20), and a second bevel gear is arranged above the fixing frame (6). (25), the upper end of the second bevel gear (25) is fixedly connected to a movable rotating rod (26), the surface of the movable rotating rod (26) is fixedly connected to a surrounding gear (27), the surface of the surrounding gear (27) is meshingly connected to a central gear (28), the central gear (28) is fixedly connected to the surface of the fixed column (5), the fixed column (5) is fixedly connected to the lower surface of the base plate (2), the lower surface of the base plate (2) is provided with an annular groove (29), and the movable rotating rod (26) is slidably connected to the inner wall of the annular groove (29).

4. The automatic soldering device for power devices on a PCB according to claim 2, characterized in that: The inner walls of the large adjustment wheel (16) and the small adjustment wheel (17) are each provided with two symmetrically arranged grooves, and the surface of the small rotating rod (14) is fixedly connected with two symmetrically arranged long strips, and the grooves match the long strips.

5. The automatic soldering device for power devices on a PCB according to claim 3, characterized in that: The left end of the manual rotating rod (20) is rotatably connected to the inner wall of the fixing frame (6), and the right end of the manual rotating rod (20) penetrates the inner walls of the driving wheel (22) and the first bevel gear (23) and extends to the front of the fixing frame (6).

6. The automatic soldering device for power devices on a PCB according to claim 3, characterized in that: The inner walls of the driving wheel (22) and the first bevel gear (23) are each provided with two symmetrically arranged sliding grooves, and the surface of the manual rotating rod (20) is fixedly connected with two symmetrically arranged sliding bars, and the sliding grooves match the sliding bars.

7. The automatic soldering device for power devices on a PCB according to claim 2, characterized in that: The speed regulating fork (18) is rotatably connected to the lower end of the large regulating wheel (16), and the speed regulating fork (18) is rotatably connected to the upper end of the small regulating wheel (17).

8. The automatic soldering device for power devices on a PCB according to claim 3, characterized in that: The angle fork (24) is rotationally connected to the right end of the driving wheel (22), and the angle fork (24) is rotationally connected to the left end of the first bevel gear (23).

Images