A PCB board welding device

Abstract

The invention relates to the technical field of PCB board processing, and in particular to a PCB board welding device, comprising a workbench, a disc is rotatably connected to the top of the workbench, an L-shaped frame is fixedly connected to the side wall of the workbench, an automatic welding mechanism is arranged on the L-shaped frame, four fixed plates are equidistantly fixedly connected to the top of the disc, one side of the top of the four fixed plates is fixedly connected to an upper block, and the other side of the top of the fixed plate is provided with a lower block, a conveying frame is arranged beside the workbench, a motor feeding mechanism is arranged on the conveying frame, the motor feeding mechanism comprises an upper electric telescopic cylinder, a conveying mechanism is arranged on the conveying frame, and the upper electric telescopic cylinder is fixedly connected to the top of the conveying frame. Under the mutual cooperation of the motor feeding mechanism, the rotating mechanism and the assembling mechanism, the present invention can automatically assemble the motor and the PCB board and convey them to the bottom of the automatic welding mechanism, without manual assembly one by one, thereby improving the production efficiency of the device and increasing the convenience performance of the device.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board processing, and in particular to a PCB board welding device. Background Art

[0002] PCB board is a printed circuit board, which is widely used in various electronic devices. Printed circuit boards provide electrical connections for electronic components. Electronic components need to be soldered on PCB boards or PCB boards need to be soldered on electronic devices to meet specific uses. When soldering, the required electronic components are placed on the corresponding positions of the PCB board, and then a heatable soldering iron is used to melt the tin bar to form liquid solder, which is then applied between the pins of the components and the pads on the PCB board. The solder will solidify after cooling to form a firm electrical and mechanical connection.

[0003] A motor PCB board welding device with publication number CN221087789U in the prior art can adjust the spacing between two groups of first clamps and second clamps through a driving component, which can facilitate clamping according to motor PCBs of different sizes and facilitate subsequent welding. When the first adjustment component is operated, the two groups of second clamps are driven to operate at the same time. The first clamp and the second clamp form a clamp structure, which can clamp the PCB. Compared with the prior art, the two groups of clamps can be adjusted at the same time to improve the clamping efficiency, thereby facilitating subsequent welding and helping to improve the welding efficiency of the device.

[0004] Although the welding efficiency of PCB boards can be improved, there are still some problems in the actual processing process. Since the device lacks an automatic assembly structure, when welding the PCB board to the motor, workers are required to place the motors one by one and then connect the PCB to the motor before welding. This is not only time-consuming and labor-intensive, but also has low work efficiency, which greatly reduces the production efficiency of the device.

[0005] Therefore, a PCB welding device is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a PCB board welding device.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a PCB board welding device, including a workbench, a disc is rotatably connected to the top of the workbench, an L-shaped frame is fixedly connected to the side wall of the workbench, an automatic welding mechanism is arranged on the L-shaped frame, four fixed plates are fixedly connected to the top of the disc at equal distances, an upper block is fixedly connected to one side of the top of the four fixed plates, a lower block is arranged on the other side of the top of the fixed plate, a conveying frame is arranged next to the workbench, and a motor loading mechanism is arranged on the conveying frame;

[0008] The motor feeding mechanism includes an upper electric telescopic cylinder, a conveying mechanism is provided on the conveying frame, the upper electric telescopic cylinder is fixedly connected to the top of the conveying frame, a baffle is fixedly connected to the top of the conveying frame and at a position corresponding to the lower block, a U-shaped seat is fixedly connected to the side wall of the conveying frame, and the inner side of the U-shaped seat is flush with the upper surface of the conveyor belt on the conveying mechanism, a push block is fixedly connected to the output end of the upper electric telescopic cylinder, and the spacing between the upper block and the lower block is adapted to the size of the motor to be welded, an assembling mechanism for assembling the circuit board and the motor is provided on the workbench, a rotating mechanism for driving the disc to rotate is provided on the workbench, and a unloading mechanism for unloading the welded circuit board is provided on the workbench.

[0009] In the above technical solution, further, the rotating mechanism includes a driving motor, the driving motor is fixedly connected to the top of the workbench, the output end of the driving motor passes through the top of the workbench and is fixedly connected to the bottom of the disk, and the driving motor is electrically connected to the timing controller.

[0010] The top of the L-shaped slide is provided with a sliding groove, and the top of the L-shaped slide is fixedly connected to a right-angle block through the sliding groove. The top of the L-shaped slide is provided with a pull frame, and the inner side of the pull frame is slidably connected to the bottom wall of the pull frame.

[0011] In the above technical solution, further, the side wall of the bottom plate is against the side wall of the L-shaped slide plate, an upper spring is fixedly connected between the inner side of the pull frame and the side wall of the bottom plate, a positioning plate is fixedly connected to the bottom of the L-shaped slide plate and next to the L-shaped push plate, and the side wall of the discharge frame is arranged in an arc shape.

[0012] In the above technical solution, further, a lower spring is fixedly connected between the inner side of the slide groove and the side wall of the L-shaped push plate, a return spring is fixedly connected between the side wall of the L-shaped slide plate and the inner side of the driving frame, a bottom opening is provided on the side wall of the driving frame above the discharge frame, and a pair of limit plates are fixedly connected to the inner side of the driving frame next to the bottom opening.

[0013] In the above technical solution, further, the pushing mechanism includes a pushing plate, which is slidably connected to the inner side of the storage frame, and the side wall of the pushing plate is fixedly connected to a sliding rod that passes through the side wall of the storage frame, and a pushing spring is fixedly connected between the outer wall of the sliding rod and the side wall of the storage frame.

[0014] In the above technical solution, further, a telescopic frame is fixedly connected to the top of the fixed plate and beside the upper block and the lower block, a telescopic plate is slidably connected to the inner side of the telescopic frame, and a pair of telescopic springs are fixedly connected between the side wall of the telescopic plate and the inner side of the telescopic frame, and an inclined groove inclined toward the middle is provided on the close side of the telescopic plate.

[0015] In the above technical scheme, further, the unloading mechanism includes an electric telescopic cylinder for unloading, the top of the workbench is fixedly connected to a support frame, the electric telescopic cylinder for unloading is fixedly connected to the side wall of the support frame, the output end of the electric telescopic cylinder for unloading is fixedly connected to a unloading block, the fixed plate and the top of the disc and the corresponding positions of the lower block are all provided with grooves, the bottom of the lower block is fixedly connected to a fixed seat, the inner side of the fixed seat is rotatably connected to a roller, a unloading spring is fixedly connected between the bottom of the lower block and the inner side of the groove, an arc groove is provided on the top of the workbench and next to the electric telescopic cylinder for unloading, the arc groove is arranged at a position corresponding to the roller, and the two ends of the arc groove are inclined, the top of the workbench is inclined and fixedly connected to a unloading frame, and the top of the disc and the fixed plate are provided with inclined grooves.

[0016] In the above technical solution, further, a three-quarter circular arc plate is fixedly connected to the top of the workbench and located outside the disc, and the notch of the arc plate is arranged between the U-shaped seat and the unloading mechanism, and a spacer block is fixedly connected to the top of the fixed plate and located between the upper block and the lower block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the cooperation of the motor feeding mechanism, the rotating mechanism and the assembly mechanism, the motor and the PCB board can be automatically assembled and transported to the bottom of the automatic welding mechanism, without the need for manual assembly one by one, thereby improving the production efficiency of the device and increasing the convenience of the device.

[0019] 2. Through the setting of the unloading mechanism, the welded motor and PCB board can be automatically pushed out without the need for workers to take them one by one, further improving the convenience of the device and increasing the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front three-dimensional structure of the welding device of the present invention;

[0021] Figure 2 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0022] Figure 3 It is a schematic diagram of the overall appearance structure of the motor feeding mechanism of the present invention;

[0023] Figure 4 It is a bottom-up three-dimensional structural schematic diagram of the disc and the driving motor of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the workbench of the present invention from top view;

[0025] Figure 6 It is a bottom-up three-dimensional structural schematic diagram of the fixing plate of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the assembling mechanism of the present invention from the side;

[0027] Figure 8 It is a schematic diagram of a three-dimensional structure of the assembly mechanism of the present invention in a top view and in full section;

[0028] Fig. 9 It is a bottom-up three-dimensional structural schematic diagram of the assembly mechanism of the present invention;

[0029] Fig.10 For the present invention Fig. 9 A schematic diagram of the partially enlarged structure at B in the middle;

[0030] Fig.11 It is a schematic diagram of a partial top view of the three-dimensional structure of the disk of the present invention.

[0031] In the figure: 1, workbench; 2, disc; 3, L-shaped frame; 4, automatic welding mechanism; 5, fixed plate; 6, upper block; 7, lower block; 8, conveyor frame; 9, conveyor mechanism; 10, upper electric telescopic cylinder; 11, baffle; 12, U-shaped seat; 13, push block; 14, drive motor; 15, lower electric telescopic cylinder; 16, L-shaped bracket; 17, drive frame; 18, storage frame; 19, outlet; 20, L-shaped slide plate; 21, L-shaped push plate; 22, discharge frame; 23, slide trough; 24, right-angle block; 25, pull frame; 2 6. Bottom plate; 27. Upper spring; 28. Lower spring; 29. ​​Reset spring; 30. Bottom mouth; 31. Limit plate; 32. Positioning plate; 33. Push plate; 34. Slide rod; 35. Push spring; 36. Electric telescopic cylinder for unloading; 37. Support frame; 38. Unloading block; 39. Groove; 40. Fixed seat; 41. Roller; 42. Unloading spring; 43. Arc groove; 44. Unloading frame; 45. Inclined groove; 46. Arc plate; 47. Block block; 48. Telescopic frame; 49. Telescopic plate; 50. Telescopic spring. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figure 1-11 A PCB board welding device shown in the figure comprises a workbench 1, a disc 2 is rotatably connected to the top of the workbench 1, an L-shaped frame 3 is fixedly connected to the side wall of the workbench 1, an automatic welding mechanism 4 is arranged on the L-shaped frame 3, and the automatic welding mechanism 4 is mainly composed of structures such as a welding machine, a wire feeder and an electric telescopic cylinder, four fixed plates 5 are fixedly connected to the top of the disc 2 at equal intervals, an upper block 6 is fixedly connected to one side of the top of the four fixed plates 5, a lower block 7 is arranged on the other side of the top of the fixed plate 5, a conveying frame 8 is arranged next to the workbench 1, and a motor feeding mechanism is arranged on the conveying frame 8;

[0035] The motor feeding mechanism includes an upper electric telescopic cylinder 10, and a conveying mechanism 9 is provided on the conveying frame 8 (it should be noted that the motor feeding mechanism is only used for motors with flat upper and lower ends, and cannot be used for feeding circular motors). The conveying mechanism 9 is mainly composed of a motor, a conveying roller, a conveying belt and other structures, and the conveying mechanism 9 is electrically connected to the driving motor 14 through a controller, and can be used to carry out timed conveying of the motor in conjunction with the rotation of the disc 2. The upper electric telescopic cylinder 10 is fixedly connected to the top of the conveying frame 8, and the top of the conveying frame 8 is connected to the lower block 7. A baffle 11 is fixedly connected at the corresponding position, a U-shaped seat 12 is fixedly connected through the side wall of the conveying frame 8, and the inner side of the U-shaped seat 12 is flush with the upper surface of the conveyor belt on the conveying mechanism 9, a push block 13 is fixedly connected to the output end of the upper electric telescopic cylinder 10, and the spacing between the upper block 6 and the lower block 7 is adapted to the size of the motor to be welded, an assembly mechanism for assembling the circuit board and the motor is provided on the workbench 1, a rotating mechanism for driving the disc 2 to rotate is provided on the workbench 1, and a material discharge mechanism for discharging the welded circuit board is provided on the workbench 1;

[0036] The rotating mechanism includes a driving motor 14, which is fixedly connected to the top of the workbench 1, and the output end of the driving motor 14 passes through the top of the workbench 1 and is fixedly connected to the bottom of the disc 2, and the driving motor 14 is electrically connected to the timing controller;

[0037] Before processing, the custom controller timing start time is set first, so that the drive motor 14 can be controlled to start intermittently, driving the disc 2 to rotate intermittently. Then during processing, the motor is sequentially transported to the baffle 11 through the conveying mechanism 9, and then the upper electric telescopic cylinder 10 is controlled to start and drive the push block 13 to move, so that the motor on the conveying mechanism 9 is pushed to between the upper block 6 and the lower block 7 through the U-shaped seat 12, and then the upper electric telescopic cylinder 10 is reset, and under the action of the conveying mechanism 9, the motor continues to be transported to the baffle 11, and then the timing controller controls the drive motor 14 to start and drive the disc 2 to rotate, and then the fixed plate 5 on which the motor is placed is rotated to the bottom of the L-shaped bracket 16, and then the timing controller controls the drive motor 14 to stop running, so that the assembly mechanism can be controlled to run.

[0038] The assembly mechanism includes a lower electric telescopic cylinder 15, an L-shaped bracket 16 is fixedly connected to the top of the workbench 1, a driving frame 17 is fixedly connected to the side wall of the L-shaped bracket 16, the lower electric telescopic cylinder 15 is fixedly connected to the side wall of the driving frame 17, a storage frame 18 is fixedly connected to the bottom of the driving frame 17, a pushing mechanism is arranged inside the storage frame 18, an outlet 19 is provided on the side wall of the storage frame 18, an L-shaped slide 20 is slidably connected to the inside of the driving frame 17, an L-shaped push plate 21 is slidably connected to the bottom of the L-shaped slide 20, a discharging frame 22 is fixedly connected through the side wall of the storage frame 18, a slide groove 23 is provided at the bottom of the L-shaped slide 20, a right-angle block 24 is fixedly connected to the top of the L-shaped push plate 21 through the slide groove 23, a pull frame 25 is provided on the top of the L-shaped slide 20, a bottom plate 26 is slidably connected to the inside of the pull frame 25, the side wall of the pull frame 25 is inclined and fits with the side wall of the right-angle block 24, and the output end of the lower electric telescopic cylinder 15 is fixedly connected to the side wall of the pull frame 25;

[0039] The side wall of the bottom plate 26 abuts against the side wall of the L-shaped slide plate 20, an upper spring 27 is fixedly connected between the inner side of the pull frame 25 and the side wall of the bottom plate 26, and a positioning plate 32 is fixedly connected to the bottom of the L-shaped slide plate 20 and located next to the L-shaped push plate 21. The positioning plate 32 prevents the L-shaped push plate 21 from losing its resistance to the stored PCB board after moving out of the storage frame 18, causing the L-shaped push plate 21 to be unable to reset. The side wall of the discharge frame 22 is set in an arc shape to avoid affecting the normal rotation of the fixed plate 5, and the driving frame 17 is higher than the telescopic frame 48. Therefore, the normal rotation of the disc 2 will not be hindered. A lower spring 28 is fixedly connected between the inner side of the slide groove 23 and the side wall of the L-shaped push plate 21. A return spring 29 is fixedly connected between the side wall of the L-shaped slide plate 20 and the inner side of the driving frame 17. A bottom opening 30 is opened on the side wall of the driving frame 17 and located above the discharge frame 22. The bottom opening 30 is used to avoid affecting the normal sliding of the right-angle block 24. A pair of limit plates 31 are fixedly connected to the inner side of the driving frame 17 and located beside the bottom opening 30. The sliding position of the L-shaped slide plate 20 can be limited by the limit plates 31.

[0040] A telescopic frame 48 is fixedly connected to the top of the fixed plate 5 and located beside the upper block 6 and the lower block 7. A telescopic plate 49 is slidably connected to the inner side of the telescopic frame 48. A pair of telescopic springs 50 is fixedly connected between the side wall of the telescopic plate 49 and the inner side of the telescopic frame 48. The position of the assembled PCB board can be restricted by the telescopic plate 49, the telescopic frame 48 and the telescopic spring 50. The telescopic plate 49 is provided with an oblique groove inclined toward the middle on one side thereof, which facilitates the PCB board to squeeze the telescopic plate 49 and slide into the telescopic frame 48.

[0041] In order to ensure that the stored PCB boards in the storage frame 18 can be automatically moved to the outlet 19 after the PCB boards in the storage frame 18 are pushed away, the pushing mechanism includes a pushing plate 33, which is slidably connected to the inner side of the storage frame 18, and the side wall of the pushing plate 33 is fixedly connected with a sliding rod 34 that runs through the side wall of the storage frame 18, and a pushing spring 35 is fixedly connected between the outer wall of the sliding rod 34 and the side wall of the storage frame 18. Through the arrangement of the pushing plate 33, the sliding rod 34 and the pushing spring 35, when the L-shaped pushing plate 21 is reset to release the pressure on the PCB board, the pushing plate 33 can be pushed to move by the elastic force of the pushing spring 35, thereby driving the stored PCB board to move.

[0042] Before processing, first pull the slide bar 34 outwards, then swing the PCB boards neatly in the storage frame 18, and release the slide bar 34 after filling. Under the elastic force of the push spring 35, the push plate 33 is pressed against the side wall of the outermost PCB board. Then, when the fixed plate 5 with the motor moves to the bottom of the assembly mechanism, the electric telescopic cylinder 15 can be controlled to start pulling the pull frame 25 to move. At this time, the bottom plate 26 in the pull frame 25 will push the L-shaped slide plate 20 to slide on the inner side of the drive frame 17, and gradually compress the reset spring 29, and drive the L-shaped push plate 21 at the bottom to pass through the outlet 19, and then push the PCB boards in the storage frame 18 to move to the side of the discharge frame 22 (because electronic components are welded on the surface of the PCB boards, there are gaps between the PCB boards, which will not affect the normal insertion of the L-shaped push plate 21). Then, under the push of the bottom plate 26, the PCB boards are pushed into the discharge frame 22;

[0043] At this time, the L-shaped slide plate 20 moves to the side of the limit plate 31 and is restricted. Then, under the continued driving of the lower electric telescopic cylinder 15, the pull frame 25 is driven to continue to move. At the same time, the bottom plate 26 is restricted by the L-shaped slide plate 20, and slides inside the pull frame 25 and gradually compresses the upper spring 27. At the same time, the inclined surface of the side wall of the pull frame 25 squeezes the inclined surface of the right-angle block 24, thereby pushing the right-angle block 24 to move toward the side of the bottom opening 30, and at the same time drives the L-shaped push plate 21 to move toward the side of the fixed plate 5, and gradually compresses the lower spring 28, and then under the thrust of the L-shaped push plate 21, the PCB board is pushed toward the side of the fixed plate 5, and then The PCB board moves out of the discharge frame 22, thereby squeezing the inclined surface of the telescopic plate 49, so that the telescopic plate 49 slides into the telescopic frame 48, and at the same time compresses the telescopic spring 50, and then the L-shaped push plate 21 pushes the PCB board between the upper block 6 and the lower block 7, and at the same time, the connecting part on the rear side of the motor is inserted into the PCB board, so that the lower electric telescopic cylinder 15 can be controlled to run in the reverse direction, and then the above operation is repeated in reverse to reset, and finally the timing controller controls the drive motor 14 to run, so that the assembled PCB board and the motor are moved to the bottom of the automatic welding mechanism 4, and then the automatic welding mechanism 4 is controlled to start and weld the assembly position, thereby realizing automatic assembly and welding of the device.

[0044] In order to automatically push out the welded motor and PCB board, the unloading mechanism includes an unloading electric telescopic cylinder 36, a support frame 37 is fixedly connected to the top of the workbench 1, the unloading electric telescopic cylinder 36 is fixedly connected to the side wall of the support frame 37, and an unloading block 38 is fixedly connected to the output end of the unloading electric telescopic cylinder 36. A groove 39 is penetrated through the fixed plate 5 and the top of the disc 2 and the corresponding position of the lower block 7. A fixed seat 40 is fixedly connected to the bottom of the lower block 7, and a roller 41 is rotatably connected to the inner side of the fixed seat 40. A unloading spring 42 is fixedly connected between the bottom of the lower block 7 and the inner side of the groove 39, and an arc groove 43 is opened on the top of the workbench 1 and next to the unloading electric telescopic cylinder 36;

[0045] The arc groove 43 is arranged at a position corresponding to the roller 41, and the two ends of the arc groove 43 are arranged at an angle to facilitate the normal sliding in and out of the roller 41. The top of the workbench 1 is tilted and fixedly connected with a blanking frame 44, and the top of the disc 2 and the side of the fixed plate 5 are provided with an inclined groove 45, through which the motor pushed out can slide into the blanking frame 44;

[0046] Before use, the material frame is placed under the material frame 44, and then when the driving motor 14 drives the disc 2 to rotate so that the welded motor and PCB board move to the side of the material discharge electric telescopic cylinder 36, it will first drive the roller 41 to move above the arc groove 43, thereby releasing the squeeze on the roller 41, and then under the elastic force of the material discharge spring 42, the roller 41 is gradually pushed into the arc groove 43, while driving the fixed seat 40 and the lower block 7 to slide downward, releasing the limit on one side of the motor, and then when the driving motor 14 stops running, the material discharge electric telescopic cylinder 36 can be controlled to start and drive the material discharge block 38 to move, thereby The unloading block 38 pushes the motor to move on the fixed plate 5, and at the same time pushes out the PCB board, so that the motor and the PCB board move to the inclined groove 45, and then slide into the unloading frame 44 under their own gravity, and then fall into the material frame below, thereby realizing automatic unloading of the welded motor and PCB board, and then when the driving motor 14 drives the disc 2 to continue to rotate, it will drive the roller 41 to gradually slide out along the inclined surface of the arc groove 43, and at the same time gradually squeeze the fixed seat 40 and the lower block 7 to slide upward, and stretch the unloading spring 42, and then the roller 41 slides onto the workbench 1 and moves to the side of the motor loading mechanism.

[0047] In order to improve the stability of the device during welding, a three-quarter circular arc plate 46 is fixedly connected to the top of the workbench 1 and located on the outside of the disc 2, and the notch of the arc plate 46 is set between the U-shaped seat 12 and the unloading mechanism. Through the setting of the arc plate 46, it can play a limiting role after the motor is pushed onto the fixed plate 5, so as to avoid the displacement of the motor when the PCB board and the motor are pushed to dock during the operation of the subsequent assembly mechanism, thereby affecting the normal welding of the device. A blocking block 47 is fixedly connected to the top of the fixed plate 5 and located between the upper block 6 and the lower block 7. Through the blocking block 47, the other side of the motor can be limited after it is pushed onto the fixed plate 5, and the blocking block 47 is set relatively low, which will not affect the normal assembly of the motor and the PCB board.

[0048] The basic principles, main features and advantages of the present invention are shown and described above.

[0049] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A PCB board welding device, comprising a workbench (1), a disc (2) rotatably connected to the top of the workbench (1), an L-shaped frame (3) fixedly connected to the side wall of the workbench (1), an automatic welding mechanism (4) being arranged on the L-shaped frame (3), characterized in that: Four fixed plates (5) are fixedly connected to the top of the disc (2) at equal intervals, an upper block (6) is fixedly connected to one side of the top of each of the four fixed plates (5), a lower block (7) is provided on the other side of the top of the fixed plate (5), a conveying frame (8) is provided next to the workbench (1), and a motor loading mechanism is provided on the conveying frame (8); The motor feeding mechanism comprises an upper electric telescopic cylinder (10), the conveying frame (8) is provided with a conveying mechanism (9), the upper electric telescopic cylinder (10) is fixedly connected to the top of the conveying frame (8), a baffle (11) is fixedly connected to the top of the conveying frame (8) and at a position corresponding to the lower block (7), a U-shaped seat (12) is fixedly connected through the side wall of the conveying frame (8), and the inner side of the U-shaped seat (12) is flush with the upper surface of the conveyor belt on the conveying mechanism (9), the output end of the upper electric telescopic cylinder (10) is fixedly connected to a push block (13), and the spacing between the upper block (6) and the lower block (7) is adapted to the size of the motor to be welded, the workbench (1) is provided with an assembly mechanism for assembling the circuit board and the motor, the workbench (1) is provided with a rotating mechanism for driving the disc (2) to rotate, and the workbench (1) is provided with a unloading mechanism for unloading the welded circuit board; The assembly mechanism comprises a lower electric telescopic cylinder (15); the top of the workbench (1) is fixedly connected to an L-shaped bracket (16); the side wall of the L-shaped bracket (16) is fixedly connected to a driving frame (17); the lower electric telescopic cylinder (15) is fixedly connected to the side wall of the driving frame (17); the bottom of the driving frame (17) is fixedly connected to a material storage frame (18); a material pushing mechanism is provided on the inner side of the material storage frame (18); an outlet (19) is provided on the side wall of the material storage frame (18); an L-shaped slide plate (20) is slidably connected to the inner side of the driving frame (17); the bottom of the L-shaped slide plate (20) slides The storage frame (18) is movably connected to an L-shaped push plate (21); a discharging frame (22) is fixedly connected to the side wall of the storage frame (18); a slide groove (23) is provided at the bottom of the L-shaped slide plate (20); a right-angle block (24) is fixedly connected to the top of the L-shaped push plate (21) through the slide groove (23); a pull frame (25) is provided at the top of the L-shaped slide plate (20); a bottom plate (26) is slidably connected to the inner side of the pull frame (25); the side wall of the pull frame (25) is inclined and fits the side wall of the right-angle block (24); and the output end of the lower electric telescopic cylinder (15) is fixedly connected to the side wall of the pull frame (25); The side wall of the bottom plate (26) abuts against the side wall of the L-shaped slide plate (20); an upper spring (27) is fixedly connected between the inner side of the pull frame (25) and the side wall of the bottom plate (26); a positioning plate (32) is fixedly connected to the bottom of the L-shaped slide plate (20) and next to the L-shaped push plate (21); and the side wall of the discharge frame (22) is arranged in an arc shape; A lower spring (28) is fixedly connected between the inner side of the slide groove (23) and the side wall of the L-shaped push plate (21); a return spring (29) is fixedly connected between the side wall of the L-shaped slide plate (20) and the inner side of the drive frame (17); a bottom opening (30) is provided on the side wall of the drive frame (17) and located above the discharge frame (22); and a pair of limit plates (31) are fixedly connected to the inner side of the drive frame (17) and located next to the bottom opening (30); The pushing mechanism comprises a pushing plate (33), the pushing plate (33) being slidably connected to the inner side of a material storage frame (18), a sliding rod (34) penetrating the side wall of the material storage frame (18) being fixedly connected to the side wall of the pushing plate (33), and a pushing spring (35) being fixedly connected between the outer wall of the sliding rod (34) and the side wall of the material storage frame (18).

2. A PCB board welding device according to claim 1, characterized in that: The rotating mechanism comprises a driving motor (14), the driving motor (14) being fixedly connected to the top of the workbench (1), the output end of the driving motor (14) passing through the top of the workbench (1) and being fixedly connected to the bottom of the disc (2), and the driving motor (14) being electrically connected to a timing controller.

3. A PCB board welding device according to claim 1, characterized in that: A telescopic frame (48) is fixedly connected to the top of the fixed plate (5) and beside the upper block (6) and the lower block (7); a telescopic plate (49) is slidably connected to the inner side of the telescopic frame (48); a pair of telescopic springs (50) is fixedly connected between the side wall of the telescopic plate (49) and the inner side of the telescopic frame (48); and an inclined groove inclined toward the middle is provided on the adjacent side of the telescopic plate (49).

4. A PCB board welding device according to claim 1, characterized in that: The unloading mechanism comprises an unloading electric telescopic cylinder (36); the top of the workbench (1) is fixedly connected to a support frame (37); the unloading electric telescopic cylinder (36) is fixedly connected to a side wall of the support frame (37); the output end of the unloading electric telescopic cylinder (36) is fixedly connected to a unloading block (38); a groove (39) is formed through the top of the fixed plate (5) and the disc (2) and at a position corresponding to the lower block (7); the bottom of the lower block (7) is fixedly connected to a fixed seat (40); the inner side of the fixed seat (40) is rotatably connected to the fixed seat (40). A roller (41) is connected, a feeding spring (42) is fixedly connected between the bottom of the lower block (7) and the inner side of the groove (39), an arc groove (43) is provided at the top of the workbench (1) and next to the feeding electric telescopic cylinder (36), the arc groove (43) is arranged at a position corresponding to the roller (41), and the two ends of the arc groove (43) are inclined, a feeding frame (44) is fixedly connected to the top of the workbench (1), and an inclined groove (45) is provided at the top of the disc (2) and next to the fixed plate (5).

5. A PCB board welding device according to claim 1, characterized in that: A three-quarter circular arc plate (46) is fixedly connected to the top of the workbench (1) and located outside the disc (2), and a notch of the arc plate (46) is arranged between the U-shaped seat (12) and the unloading mechanism. A spacer block (47) is fixedly connected to the top of the fixed plate (5) and located between the upper block (6) and the lower block (7).

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