CN116193706A

CN116193706A - PCB assembly welding equipment and use method thereof

Info

Publication number: CN116193706A
Application number: CN202310278566.XA
Authority: CN
Inventors: 贺战卫; 董志鸿
Original assignee: Suzhou Fuwei Electronic Technology Co ltd
Current assignee: Suzhou Fuwei Electronic Technology Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-05-30

Abstract

The invention discloses assembly welding equipment for a PCB and a using method thereof, and belongs to the technical field of PCB assembly. Including equipment platform and screw conveying mechanism, still include: the first support frame is fixedly connected to the surface of the assembly table, the side wall of the first support frame is connected with a first screw rod through a first motor, and the outer wall of the first screw rod is in threaded connection with a first sliding block; the output end of the first electric push rod is fixedly connected with a first supporting plate; the output end of the second electric push rod is connected with a sixth motor through the first moving plate, and the output end of the sixth motor is fixedly connected with a screwdriver; the output end of the third electric push rod is fixedly connected with a first mechanical gripper; the equipment reduces the working strength, improves the working efficiency, and simultaneously improves the product quality.

Description

PCB assembly welding equipment and use method thereof

Technical Field

The invention relates to the technical field of PCB assembly, in particular to an assembly welding device for a PCB and a use method thereof.

Background

The PCB, called a printed circuit board, is an important electronic component, is a support for electronic components, and is a carrier for electrical interconnection of electronic components. It is called a "printed" circuit board because it is made using electronic printing.

In order to improve the heat dissipation efficiency of a PCB, a printed circuit board generally needs to be locked with a heat dissipation fin in the assembly process, and in the assembly welding process of the traditional PCB, the heat dissipation fin is generally fixed on the surface of the PCB by adopting a manual mode through screws, and the problems of waste of productivity, low production efficiency, poor product quality and the like are easily caused due to factors such as instability of personnel, so that improvement is needed.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a radiating fin is fixed on the surface of a PCB (printed circuit board) by using a screw in a manual mode, and the factors such as instability of personnel are easy to cause waste of productivity, low production efficiency and poor product quality.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides an equipment welding equipment of PCB board, includes the equipment platform that the surface was provided with spacing frame, still includes: the first support frame is fixedly connected to the surface of the assembly table, a first motor is fixedly connected to the side wall of the first support frame, a first screw rod is fixedly connected to the output end of the first motor, and a first sliding block is connected to the outer wall of the first screw rod in a threaded manner; the first sliding block is connected in the first sliding groove in a sliding way; the first electric push rod is fixedly connected to the surface of the first sliding block, and the output end of the first electric push rod is fixedly connected with a first supporting plate; the second electric push rod is fixedly connected to the surface of the first supporting plate, the output end of the second electric push rod is fixedly connected with the first moving plate, the surface of the first moving plate is fixedly connected with a sixth motor, and the output end of the sixth motor is fixedly connected with a screwdriver; the output end of the third electric push rod is fixedly connected with a first mechanical gripper; the screw conveying mechanism is fixedly connected to the surface of the assembly table and used for conveying screws towards the direction of the first mechanical gripper.

In order to facilitate sequencing and delivery of screws, preferably, the screw delivery mechanism comprises: the first vibrating disc is fixedly connected to the surface of the assembly table, and the output end of the first vibrating disc is fixedly connected with a first concave plate; the first concave plate is fixedly connected to the surface of the second support frame, and a second sliding groove is formed in the surface of the second support frame; the first air cylinder is fixedly connected to the side wall of the second support frame, the output end of the first air cylinder is fixedly connected with a second moving plate, and the second moving plate is slidably connected to the second chute; the second cylinder is fixedly connected to the bottom of the second moving plate, the output end of the second cylinder is fixedly connected with a dislocation plate, the dislocation plate is in sliding connection with the second moving plate, and the surface of the dislocation plate is provided with a first groove; and the first stop block is fixedly connected to the surface of the second movable plate.

For the convenience to assemble a plurality of PCB boards simultaneously, preferably, the fixed surface of equipment platform is connected with the decollator, the output fixedly connected with carousel of decollator, spacing frame circumference array is at the surface of carousel.

In order to conveniently adjust the angle of the limiting frame, further, the bottom of the rotary table is fixedly connected with a second motor, the output end of the second motor is fixedly connected with the limiting frame, and the limiting frame is rotationally connected with the rotary table.

In order to conveniently improve the working efficiency, further, the surface fixedly connected with feeding conveying mechanism and ejection of compact conveying mechanism of assembling the platform, one side of feeding conveying mechanism is provided with feed mechanism, one side of ejection of compact conveying mechanism is provided with feed mechanism.

In order to facilitate automatic feeding, still further, feed conveying mechanism and ejection of compact conveying mechanism all include: the surface of the third supporting frame is fixedly connected with a third motor, and the output end of the third motor is fixedly connected with a first rotating rod; the second rotating rod is rotationally connected to the inner wall of the third supporting frame, and a conveying belt is connected between the first rotating rod and the second rotating rod in a transmission manner.

In order to make things convenient for automatic feeding and unloading, still further, feed mechanism and unloading mechanism all include: the side wall of the fourth supporting frame is fixedly connected with a fourth motor, and the output end of the fourth motor is fixedly connected with a second screw rod; the third moving plate is in threaded connection with the outer wall of the second screw rod, the surface of the fourth supporting frame is fixedly connected with a guide rail, and the third moving plate is in sliding connection with the guide rail; the fifth electric push rod is fixedly connected to the surface of the third movable plate, and the output end of the fifth electric push rod is fixedly connected with a second mechanical gripper.

For convenient automatic cooling fin that adds, further, the fixed surface of equipment platform is connected with second vibration dish and fifth support frame, the output fixedly connected with second concave plate of second vibration dish, second concave plate and fifth support frame fixed connection, wherein, the fixed surface of fifth support frame is connected with the third cylinder, the output fixedly connected with fourth movable plate of third cylinder, the fixed surface of fourth movable plate is connected with the third concave plate to and the fixed surface of equipment platform is connected with transfer mechanism, transfer mechanism is used for transferring the fin in the second vibration dish.

In order to facilitate transferring the radiating fin, further, the transfer mechanism comprises a sixth support frame fixedly connected to the surface of the assembly table, a fifth motor is fixedly connected to the surface of the sixth support frame, a third screw rod is fixedly connected to the output end of the fifth motor, a fifth moving plate is connected to the outer wall of the third screw rod in a threaded mode, a third sliding groove is formed in the surface of the fifth moving plate, the fifth moving plate is slidably connected to the third sliding groove, a fourth electric push rod is fixedly connected to the side wall of the fifth moving plate, a sixth moving plate is fixedly connected to the output end of the fourth electric push rod, a fourth cylinder is fixedly connected to the surface of the sixth moving plate, and a third mechanical gripper is fixedly connected to the output end of the fourth cylinder.

The assembly welding method of PCB board includes the following steps:

step one: placing a radiating fin on the surface of a PCB to be assembled;

step two: sequencing the screws, and automatically fixing the radiating fins on the surface of the PCB by using the screws;

step three: welding the PCB, and cutting feet by an automatic foot cutting machine after welding;

step four: dispensing by an automatic dispensing machine;

step five: and (5) performing electrical performance test by using an automatic test system.

Compared with the prior art, the invention provides the assembly welding equipment for the PCB, which has the following beneficial effects:

1. this equipment welding equipment of PCB board through placing the PCB board that waits to process in spacing frame, then place the fin on the surface of PCB board, start first vibration dish makes the screw get into in order in the first recess, remove first mechanical tongs to the dislocation board directly over, through control third electric putter, first motor, third electric putter, be convenient for place the screw in the screw hole on the fin, then through control second electric putter and sixth motor, realize with the screw with the fin automatic fixation on the PCB board, adopt machinery to replace traditional manual work, work intensity is reduced, and work efficiency is improved, simultaneously, the loss because personnel's unstability brings has been reduced, product quality is promoted.

2. This equipment welding equipment of PCB board removes through starting third motor drive conveyer belt to be convenient for realize the transport of work piece, rotate through starting fourth motor drive second lead screw, the second lead screw drives the third movable plate and moves on the guide rail, thereby conveniently adjust the position of second mechanical tongs, start fifth electric putter and promote the second mechanical tongs and remove, thereby conveniently adjust the height of second mechanical tongs, thereby be convenient for the last, the unloading of this equipment, reduced working strength, improved work efficiency.

3. This equipment welding equipment of PCB board places the PCB board in the spacing frame that corresponds through control feeding conveying mechanism and feed mechanism, then the control decollator makes the carousel rotatory intermittently, starts the third lead screw of fifth motor drive and rotates, and the third lead screw drives the fifth movable plate and slides in the third spout, starts fourth electric putter and promotes the sixth movable plate and remove, starts fourth cylinder promotion third mechanical tongs and removes to be convenient for place the fin in the second concave plate at the surface of PCB board, improved work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an assembly welding device for a PCB board according to the present invention;

fig. 2 is an enlarged schematic diagram of a structure a in fig. 1 of an assembly welding device for a PCB board according to the present invention;

fig. 3 is a schematic diagram of a part of a PCB assembly welding apparatus according to the present invention;

fig. 4 is a schematic diagram of a part of a structure of an assembly welding device for a PCB board according to the present invention;

fig. 5 is a schematic diagram of a part of a PCB assembly welding apparatus according to the present invention;

fig. 6 is a schematic diagram of a part of a PCB assembly welding apparatus according to the present invention;

fig. 7 is an enlarged schematic diagram of a structure at B in fig. 6 of an assembly welding device for a PCB board according to the present invention.

In the figure: 1. an assembly table; 101. a limit frame; 102. a first support frame; 103. a first motor; 104. a first screw rod; 105. a first slider; 106. a first chute; 107. a first electric push rod; 2. a first support plate; 201. a second electric push rod; 202. a first moving plate; 203. a sixth motor; 204. a screwdriver; 205. a third electric push rod; 206. a first mechanical gripper; 3. a first vibration plate; 301. a second support frame; 302. a first concave plate; 303. a first cylinder; 304. a second moving plate; 305. a second cylinder; 306. a dislocation plate; 307. a second chute; 308. a first groove; 309. a first stopper; 4. a divider; 401. a turntable; 402. a second motor; 403. a third support frame; 404. a third motor; 405. a first rotating lever; 406. a second rotating rod; 407. a conveyor belt; 5. a fourth support frame; 501. a fourth motor; 502. a second screw rod; 503. a third moving plate; 504. a fifth electric push rod; 505. a second mechanical gripper; 506. a guide rail; 6. a second vibration plate; 601. a second concave plate; 602. a fifth support frame; 603. a third cylinder; 604. a fourth moving plate; 605. a third concave plate; 7. a sixth support frame; 701. a fifth motor; 702. a third screw rod; 703. a fifth moving plate; 704. a third chute; 705. a fourth electric push rod; 706. a sixth moving plate; 707. a fourth cylinder; 708. and a third mechanical gripper.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1:

referring to fig. 1 and fig. 3 to 5, an assembly welding apparatus for a PCB board, including an assembly table 1 having a surface provided with a limit frame 101, further includes: the first support frame 102 is fixedly connected to the surface of the assembly table 1, the side wall of the first support frame 102 is fixedly connected with the first motor 103, the output end of the first motor 103 is fixedly connected with the first screw rod 104, and the outer wall of the first screw rod 104 is in threaded connection with the first sliding block 105; the first sliding groove 106 is formed in the surface of the first supporting frame 102, and the first sliding block 105 is connected in the first sliding groove 106 in a sliding manner; the first electric push rod 107 is fixedly connected to the surface of the first sliding block 105, and the output end of the first electric push rod 107 is fixedly connected with the first supporting plate 2; the second electric push rod 201 is fixedly connected to the surface of the first support plate 2, the output end of the second electric push rod 201 is fixedly connected with the first moving plate 202, the surface of the first moving plate 202 is fixedly connected with the sixth motor 203, and the output end of the sixth motor 203 is fixedly connected with the screwdriver 204; the third electric push rod 205 is fixedly connected to the surface of the first supporting plate 2, and the output end of the third electric push rod 205 is fixedly connected with the first mechanical gripper 206; and a screw conveying mechanism fixedly connected to the surface of the assembly table 1, wherein the screw conveying mechanism is used for conveying screws towards the first mechanical gripper 206.

Referring to fig. 3 to 5, the screw feeding mechanism includes: the first vibrating plate 3 is fixedly connected to the surface of the assembly table 1, and the output end of the first vibrating plate 3 is fixedly connected with the first concave plate 302; the second supporting frame 301 is fixedly connected to the surface of the assembling table 1, the first concave plate 302 is fixedly connected to the surface of the second supporting frame 301, and a second sliding groove 307 is formed in the surface of the second supporting frame 301; the first cylinder 303 is fixedly connected to the side wall of the second supporting frame 301, the output end of the first cylinder 303 is fixedly connected with the second moving plate 304, and the second moving plate 304 is slidably connected to the second chute 307; the second cylinder 305 is fixedly connected to the bottom of the second moving plate 304, the output end of the second cylinder 305 is fixedly connected with a dislocation plate 306, the dislocation plate 306 is in sliding connection with the second moving plate 304, and a first groove 308 is formed in the surface of the dislocation plate 306; a first stopper 309 fixedly coupled to a surface of the second moving plate 304.

When the novel PCB processing device is used, a PCB to be processed is placed in the limiting frame 101, then the radiating fins are placed on the surface of the PCB, the first vibration plate 3 is started to enable screws to orderly enter the first concave plate 302, one of the screws falls into the first groove 308, the first cylinder 303 is started to push the second moving plate 304 to move in the second sliding groove 307, so that the first stop block 309 blocks the outlet of the first concave plate 302, the second cylinder 305 is started to push the dislocation plate 306 to ascend, the first motor 103 is started to drive the first screw rod 104 to rotate, and the first screw rod 104 drives the first sliding block 105 to slide in the first sliding groove 106, so that the position of the first supporting plate 2 is convenient to adjust.

The first mechanical gripper 206 is moved to the position right above the dislocation plate 306, the third electric push rod 205 is started to push the first mechanical gripper 206 to descend, so that screws in the first groove 308 are clamped conveniently, the screws are placed in threaded holes in the radiating fins conveniently by controlling the first electric push rod 107, the first motor 103 and the third electric push rod 205, then the radiating fins are automatically fixed on the PCB by controlling the second electric push rod 201 and the sixth motor 203, the traditional manual work is replaced by using a machine, the working strength is reduced, the working efficiency is improved, meanwhile, the loss caused by instable personnel is reduced, and the product quality is improved.

Example 2:

referring to fig. 1, the embodiment is substantially the same as embodiment 1, and further, a specific embodiment for simultaneously assembling a plurality of PCBs is added.

Referring to fig. 1, a divider 4 is fixedly connected to the surface of the assembly table 1, an output end of the divider 4 is fixedly connected to a turntable 401, a limit frame 101 is circumferentially arrayed on the surface of the turntable 401, and the divider 4 is started to drive the turntable 401 to intermittently rotate, so that a plurality of PCBs are assembled at the same time.

The bottom fixedly connected with second motor 402 of carousel 401, the output and the spacing frame 101 fixed connection of second motor 402, spacing frame 101 rotates with carousel 401 to be connected, starts the rotation of the spacing frame 101 of second motor 402 drive to be convenient for adjust the angle of spacing frame 101, reduced the error, improved product quality.

Example 3:

referring to fig. 1 to 2, substantially the same as example 2, further, a specific embodiment for improving the working efficiency is added.

Referring to fig. 1, a feeding conveying mechanism and a discharging conveying mechanism are fixedly connected to the surface of an assembly table 1, a feeding mechanism is arranged on one side of the feeding conveying mechanism, and a discharging mechanism is arranged on one side of the discharging conveying mechanism.

Referring to fig. 1-2, the infeed conveyor and outfeed conveyor each include: the third support frame 403 is fixedly connected to the surface of the assembly table 1, the surface of the third support frame 403 is fixedly connected with the third motor 404, and the output end of the third motor 404 is fixedly connected with the first rotating rod 405; the second rotating rod 406 is rotatably connected to the inner wall of the third supporting frame 403, and a conveyor belt 407 is in transmission connection between the first rotating rod 405 and the second rotating rod 406.

The working principles of the feeding conveying mechanism and the discharging conveying mechanism are as follows: the third motor 404 is started to drive the first rotating rod 405 to rotate, the first rotating rod 405 drives the second rotating rod 406 to rotate under the transmission action of the conveying belt 407, and the rotation of the first rotating rod 405 and the second rotating rod 406 is beneficial to the movement of the conveying belt 407, so that the conveying of workpieces is convenient to realize.

Referring to fig. 1-2, the feeding mechanism and the discharging mechanism each include: the fourth support frame 5 is fixedly connected to the surface of the assembly table 1, the side wall of the fourth support frame 5 is fixedly connected with the fourth motor 501, and the output end of the fourth motor 501 is fixedly connected with the second screw rod 502; the third movable plate 503 is in threaded connection with the outer wall of the second screw rod 502, the surface of the fourth support frame 5 is fixedly connected with a guide rail 506, and the third movable plate 503 is in sliding connection with the guide rail 506; and a fifth electric push rod 504 fixedly connected to the surface of the third moving plate 503, wherein the output end of the fifth electric push rod 504 is fixedly connected with a second mechanical gripper 505.

The working principles of the feeding mechanism and the discharging mechanism are as follows: the fourth motor 501 is started to drive the second screw rod 502 to rotate, the second screw rod 502 drives the third moving plate 503 to move on the guide rail 506, so that the position of the second mechanical gripper 505 is conveniently adjusted, and the fifth electric push rod 504 is started to push the second mechanical gripper 505 to move, so that the height of the second mechanical gripper 505 is conveniently adjusted.

Example 4:

referring to fig. 1 and fig. 6 to 7, substantially the same as in example 3, further, an embodiment of automatically adding a heat sink is added.

Referring to fig. 1 and fig. 6 to 7, the surface of the assembly table 1 is fixedly connected with a second vibration plate 6 and a fifth support frame 602, the output end of the second vibration plate 6 is fixedly connected with a second concave plate 601, the second concave plate 601 is fixedly connected with the fifth support frame 602, wherein the surface of the fifth support frame 602 is fixedly connected with a third cylinder 603, the output end of the third cylinder 603 is fixedly connected with a fourth moving plate 604, the surface of the fourth moving plate 604 is fixedly connected with a third concave plate 605, and the surface of the assembly table 1 is fixedly connected with a transfer mechanism for transferring cooling fins in the second vibration plate 6.

Referring to fig. 6-7, the transfer mechanism includes a sixth support frame 7 fixedly connected to the surface of the assembly table 1, a fifth motor 701 is fixedly connected to the surface of the sixth support frame 7, an output end of the fifth motor 701 is fixedly connected to a third screw rod 702, an outer wall of the third screw rod 702 is in threaded connection with a fifth moving plate 703, a third sliding groove 704 is formed in the surface of the fifth moving plate 703, the fifth moving plate 703 is slidably connected in the third sliding groove 704, a fourth electric push rod 705 is fixedly connected to a side wall of the fifth moving plate 703, an output end of the fourth electric push rod 705 is fixedly connected to a sixth moving plate 706, a fourth cylinder 707 is fixedly connected to the surface of the sixth moving plate 706, and an output end of the fourth cylinder 707 is fixedly connected to a third mechanical gripper 708.

When the PCB board is used, the PCB board is placed in the corresponding limiting frame 101 through controlling the feeding conveying mechanism and the feeding mechanism, then the divider 4 is controlled to enable the rotary table 401 to intermittently rotate, the second vibration plate 6 is started to enable the radiating fins to orderly move from the second concave plate 601 to the third concave plate 605, the third air cylinder 603 is started to push the fourth moving plate 604 to move, so that the radiating fins in the second concave plate 601 are separated from the rest radiating fins, the fifth motor 701 is started to drive the third screw rod 702 to rotate, the third screw rod 702 drives the fifth moving plate 703 to slide in the third sliding groove 704, the fourth electric push rod 705 is started to push the sixth moving plate 706 to move, the fourth air cylinder 707 is started to push the third mechanical gripper 708 to move, and the radiating fins in the second concave plate 601 are conveniently placed on the surface of the PCB board, and the working efficiency is improved.

The assembly welding method of PCB board includes the following steps:

step one: placing a radiating fin on the surface of a PCB to be assembled;

step four: dispensing by an automatic dispensing machine;

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art who is skilled in the art to which the present invention pertains should make equivalent substitutions or modifications according to the technical scheme and the inventive concept disclosed herein, and should be covered by the scope of the present invention.

Claims

1. The utility model provides an equipment welding equipment of PCB board, includes equipment platform (1) that the surface was provided with spacing frame (101), its characterized in that still includes:

the first support frame (102) is fixedly connected to the surface of the assembly table (1), a first motor (103) is fixedly connected to the side wall of the first support frame (102), a first screw rod (104) is fixedly connected to the output end of the first motor (103), and a first sliding block (105) is connected to the outer wall of the first screw rod (104) in a threaded manner;

the first sliding groove (106) is formed in the surface of the first supporting frame (102), and the first sliding block (105) is connected in the first sliding groove (106) in a sliding manner;

the first electric push rod (107) is fixedly connected to the surface of the first sliding block (105), and the output end of the first electric push rod (107) is fixedly connected with the first supporting plate (2);

the second electric push rod (201) is fixedly connected to the surface of the first supporting plate (2), the output end of the second electric push rod (201) is fixedly connected with the first moving plate (202), the surface of the first moving plate (202) is fixedly connected with a sixth motor (203), and the output end of the sixth motor (203) is fixedly connected with a screwdriver (204);

the third electric push rod (205) is fixedly connected to the surface of the first supporting plate (2), and the output end of the third electric push rod (205) is fixedly connected with a first mechanical gripper (206);

and the screw conveying mechanism is fixedly connected to the surface of the assembly table (1) and is used for conveying screws towards the direction of the first mechanical gripper (206).

2. The assembly and welding apparatus of a PCB board of claim 1, wherein the screw feeding mechanism comprises:

the first vibrating disc (3) is fixedly connected to the surface of the assembly table (1), and the output end of the first vibrating disc (3) is fixedly connected with a first concave plate (302);

the second supporting frame (301) is fixedly connected to the surface of the assembling table (1), the first concave plate (302) is fixedly connected to the surface of the second supporting frame (301), and a second sliding groove (307) is formed in the surface of the second supporting frame (301);

the first air cylinder (303) is fixedly connected to the side wall of the second supporting frame (301), the output end of the first air cylinder (303) is fixedly connected with the second moving plate (304), and the second moving plate (304) is slidably connected to the second sliding groove (307);

the second cylinder (305) is fixedly connected to the bottom of the second moving plate (304), the output end of the second cylinder (305) is fixedly connected with a dislocation plate (306), the dislocation plate (306) is in sliding connection with the second moving plate (304), and a first groove (308) is formed in the surface of the dislocation plate (306);

and a first stop block (309) fixedly connected to the surface of the second moving plate (304).

3. The assembly welding device for the PCB according to claim 1, wherein the surface of the assembly table (1) is fixedly connected with a divider (4), the output end of the divider (4) is fixedly connected with a rotary table (401), and the limiting frames (101) are circumferentially arrayed on the surface of the rotary table (401).

4. The assembly welding equipment for the PCB according to claim 3, wherein a second motor (402) is fixedly connected to the bottom of the turntable (401), an output end of the second motor (402) is fixedly connected with the limiting frame (101), and the limiting frame (101) is rotatably connected with the turntable (401).

5. The assembly welding equipment for the PCB according to claim 3, wherein the surface of the assembly table (1) is fixedly connected with a feeding conveying mechanism and a discharging conveying mechanism, a feeding mechanism is arranged on one side of the feeding conveying mechanism, and a discharging mechanism is arranged on one side of the discharging conveying mechanism.

6. The PCB board assembly and soldering apparatus according to claim 5, wherein the feed and discharge conveying mechanisms each comprise:

the device comprises a third supporting frame (403) fixedly connected to the surface of the assembly table (1), a third motor (404) is fixedly connected to the surface of the third supporting frame (403), and a first rotating rod (405) is fixedly connected to the output end of the third motor (404);

and a second rotating rod (406) connected to the inner wall of the third supporting frame (403) in a rotating way, and a conveying belt (407) is connected between the first rotating rod (405) and the second rotating rod (406) in a transmission way.

7. The PCB board assembly welding apparatus of claim 5, wherein the loading mechanism and the unloading mechanism each comprise:

the device comprises a fourth supporting frame (5) fixedly connected to the surface of the assembly table (1), a fourth motor (501) is fixedly connected to the side wall of the fourth supporting frame (5), and a second screw rod (502) is fixedly connected to the output end of the fourth motor (501);

the third moving plate (503) is in threaded connection with the outer wall of the second screw rod (502), a guide rail (506) is fixedly connected to the surface of the fourth supporting frame (5), and the third moving plate (503) is in sliding connection with the guide rail (506);

and the fifth electric push rod (504) is fixedly connected to the surface of the third moving plate (503), and the output end of the fifth electric push rod (504) is fixedly connected with a second mechanical gripper (505).

8. The assembly welding equipment for the PCB according to claim 3, wherein the surface of the assembly table (1) is fixedly connected with a second vibrating disc (6) and a fifth supporting frame (602), the output end of the second vibrating disc (6) is fixedly connected with a second concave plate (601), the second concave plate (601) is fixedly connected with the fifth supporting frame (602),

wherein the surface of the fifth supporting frame (602) is fixedly connected with a third air cylinder (603), the output end of the third air cylinder (603) is fixedly connected with a fourth moving plate (604), the surface of the fourth moving plate (604) is fixedly connected with a third concave plate (605),

and the surface of the assembly table (1) is fixedly connected with a transfer mechanism, and the transfer mechanism is used for transferring the radiating fins in the second vibration plate (6).

9. The assembly and welding device for the PCB according to claim 8, wherein the transferring mechanism comprises a sixth supporting frame (7) fixedly connected to the surface of the assembly table (1), a fifth motor (701) is fixedly connected to the surface of the sixth supporting frame (7), a third screw rod (702) is fixedly connected to the output end of the fifth motor (701), a fifth moving plate (703) is connected to the outer wall of the third screw rod (702) through threads,

the surface of the fifth moving plate (703) is provided with a third sliding groove (704), the fifth moving plate (703) is slidably connected in the third sliding groove (704), the side wall of the fifth moving plate (703) is fixedly connected with a fourth electric push rod (705), the output end of the fourth electric push rod (705) is fixedly connected with a sixth moving plate (706), the surface of the sixth moving plate (706) is fixedly connected with a fourth air cylinder (707), and the output end of the fourth air cylinder (707) is fixedly connected with a third mechanical gripper (708).

10. An assembly welding method of a PCB board, employing an assembly welding apparatus of a PCB board according to any one of claims 1 to 9, characterized by comprising the following steps:

step one: placing a radiating fin on the surface of a PCB to be assembled;

step four: dispensing by an automatic dispensing machine;