PCB welding system

Abstract

The invention provides a PCB welding system which comprises a supporting bottom plate and a conveying table, and a shell profiling groove is formed in the top of the conveying table; the first driving mechanism is used for driving the conveying table to move; the PCB supporting plate is used for supporting the PCB; the outer end of the first movable suction pipe communicates with a negative pressure pump. The first moving mechanism is used for moving the first moving suction pipe to move; the chip supporting seat is used for placing a chip; the outer end of the second movable suction pipe communicates with a negative pressure pump. The second moving mechanism is used for moving the second moving suction pipe to move; the pin supporting frame is used for supporting a plurality of pins, and the plurality of pins are vertically and sequentially arranged; the fixing mechanism is used for fixing the pins located at the top; the third moving mechanism is used for moving the fixing mechanism to move; and the thermocompression welding is used for welding the PCB and the pins of the chip and welding the PCB and the pins. The invention provides a novel welding system for a PCB (Printed Circuit Board).

Description

Technical Field

[0001] The invention belongs to the technical field of PCB production and relates to a PCB welding system. Background Art

[0002] In order to describe the operation of the control process, the data structure that stores the management and control information of the process in the system is called the process control block (PCB). It is part of the process entity and is the most important record data structure in the operating system. It is the most important data structure for process management and control. Each process has a PCB. When a process is created, the PCB is established and accompanies the entire process of the process until the process is canceled.

[0003] PCB records all the information needed by the operating system to describe the current situation of the process and control the operation of the process. The function of PCB is to make a program (including data) that cannot run independently in a multi-programming environment become a basic unit that can run independently, a process that can be executed concurrently with other processes. In other words, OS controls and manages concurrently executed processes based on PCB. For example, when OS wants to schedule a process for execution, it needs to check its current status and priority from the PCB of the process; after scheduling a process, it needs to set the scene for the process to resume operation based on the processor status information saved in its PCB, and find its program and data based on the memory start address of the program and data in its PCB; during the execution of the process, when it needs to synchronize, communicate or access files with the cooperating process, it also needs to access PCB; when the process is suspended for some reason, the processor environment of the breakpoint must be saved in PCB. It can be seen that throughout the life cycle of the process, the system always controls the process through PCB, that is, the system perceives the existence of the process based on the PCB of the process rather than anything else. So PCB is the only sign of the existence of the process. Summary of the invention

[0004] The present invention aims to provide a PCB soldering system, and aims to provide a PCB soldering system.

[0005] In order to achieve the above technical effects, the present invention provides a PCB welding system, including a supporting base plate and:

[0006] A conveying platform, wherein a housing profiling groove is provided on the top of the conveying platform, and the housing profiling groove is used to support the PCB housing;

[0007] a first driving mechanism, the first driving mechanism being used to drive the conveying platform to move;

[0008] A PCB support plate, wherein the PCB support plate is used to support the PCB;

[0009] a first movable suction pipe, wherein the outer end of the first movable suction pipe is connected to a negative pressure pump;

[0010] A first moving mechanism, the first moving mechanism is used to move the first moving straw to move, and move the PCB on the PCB support plate into the PCB housing;

[0011] A chip support seat, on which the chip is placed;

[0012] a second movable suction pipe, wherein the outer end of the second movable suction pipe is connected to a negative pressure pump;

[0013] A second moving mechanism, the second moving mechanism is used to move the second moving straw to move the chip on the chip support seat into the PCB housing;

[0014] A pin support frame, the pin support frame is used to support a plurality of pins, and the plurality of pins are arranged vertically in sequence;

[0015] A fixing mechanism, the fixing mechanism is used to fix the pins located at the top;

[0016] A third moving mechanism, the third moving mechanism is used to move the fixing mechanism to move, and move the pins in the pin support frame into the PCB housing;

[0017] Hot pressing welding is used to weld the pins of the PCB and the chip, and the PCB and the pins.

[0018] The present invention is further configured such that the first driving mechanism comprises two support platforms that are arranged in parallel and at intervals, both ends of the support platforms are rotatably provided with driving rollers, the outer end of one of the driving rollers is provided with a motor, and driving belts are sleeved on the outer walls of the two driving rollers, and the lower side of the driving belt located at the upper side is movably fitted to the top of the support platform;

[0019] At least two anti-slip columns are arranged at the bottom of both sides of the conveying platform, and the anti-slip columns are movably in contact with the outer sides of the corresponding supporting platforms, and the bottom of the conveying platform is in contact with the two driving belts.

[0020] The present invention is further configured that the support platforms are provided in two groups, the two groups of support platforms are of equal height and parallel, and further comprises:

[0021] A transition platform, wherein two transition platforms are provided, and both transition platforms are located between the two ends of the two groups of support platforms, and the top of the transition platform is at the same height as the top of the support platform;

[0022] Transition rollers, two groups of transition rollers are arranged opposite to each other on the transition platform, and the transition rollers are externally connected to a motor;

[0023] A transition belt, the two ends of which are movably sleeved on the two opposite transition rollers, the length direction of the transition belt is parallel to the length direction of the driving belt, and the upper side of the transition belt is movably fitted on the top of the transition platform;

[0024] A first lifting plate, wherein the outer side of the support platform is horizontally provided with the first lifting plate, the top of the first lifting plate is at the same height as the top of the support platform, the upper side of the top of one end of the first lifting plate close to the middle of the support platform is chamfered, and the upper side surface of the chamfered part of the first lifting plate is a first lifting inclined surface;

[0025] A second lifting plate, the second lifting plate is horizontally arranged on the inner side of the support platform, the top of the second lifting plate away from the corresponding support platform is chamfered, and the upper side surface of the chamfered part of the second lifting plate is a second lifting inclined surface;

[0026] A telescopic hole is vertically opened at the bottom of the conveying platform, an elastic member is arranged at the top of the telescopic hole, the bottom of the elastic member is connected to the top of the anti-slip column, the bottom of the anti-slip column is dome-shaped, the first lifting slope and the second lifting slope are both used to drive the anti-slip column upward to move, and make the anti-slip column enter the telescopic hole, the driving belt is used to act on the side of the dome part of the bottom of the driving belt, and make the anti-slip column enter the telescopic hole;

[0027] A guide member, wherein the guide member is horizontally arranged on the top of the transition platform, and a C-shaped guide groove is horizontally opened on the top of the guide member, the opening of the guide groove is toward the middle direction of the conveying platform, and the inner walls of the openings at both ends of the guide groove are respectively located on the outer side of the corresponding first lifting plate, and the guide groove is used to act on the side of the conveying platform and make the conveying platform rotate horizontally 180°.

[0028] The present invention is further configured such that the first moving mechanism, the second moving mechanism and the third moving mechanism all include one of a three-axis manipulator, a four-axis manipulator or a five-axis manipulator.

[0029] The present invention is further configured that the thermocompression welding includes two, one thermocompression welding is used to weld the pins of the PCB and the chip, and the other thermocompression welding is used to weld the PCB and the pins.

[0030] The present invention is further configured such that a camera head is also provided on the support base plate, the camera head is located upstream of the hot pressing welding, and the camera head is used to take a picture of the workpiece on the conveying platform and analyze whether the placement of the workpiece is qualified.

[0031] The present invention is further configured such that a plurality of positioning mechanisms for fixing the position of the conveying platform are arranged on the supporting base plate, and the first moving mechanism, the second moving mechanism, the third moving mechanism, the shooting head and the hot pressing welding part all have the positioning mechanisms.

[0032] The present invention is further configured such that the positioning mechanism comprises:

[0033] A limiting member is arranged on the supporting bottom plate, the limiting member is located on the outer side of the corresponding supporting platform, a limiting groove is horizontally provided on one side of the limiting member close to the supporting platform, and the upper side and the outer side of the limiting groove are used to limit the conveying platform;

[0034] A positioning cylinder body is vertically arranged below the supporting bottom plate, a positioning column is vertically arranged on the output shaft of the positioning cylinder body, and a positioning hole matched with the positioning column is opened at the bottom of the conveying platform.

[0035] The present invention is further configured such that a positioning mechanism is provided on the support base plate near the edge of the support platform.

[0036] The present invention is further configured such that the fixing mechanism comprises a suction cup or a pneumatic clamp.

[0037] Compared with the prior art, the present invention provides a PCB welding system. When welding the PCB, first, the worker manually places the PCB shell into the shell profiling groove, and then the first driving mechanism moves the conveying table with multiple PCB shells to the PCB support plate. At this time, the first moving mechanism moves the first moving suction pipe, and the first moving suction pipe absorbs a PCB through negative pressure, and then transfers and assembles it into the PCB shell; then the first driving mechanism drives the conveying table to continue to move downstream; after moving to the chip support seat (the figure is only for illustration and does not represent the actual structure), the second moving mechanism drives the second moving suction pipe to move, and takes out the chip placed on the chip support seat, and then transfers and assembles it into the PCB shell. The conveyor moves to the corresponding position; then the first driving mechanism transports the conveyor to the side of the pin supporting frame, and at this time the third moving mechanism drives the fixing mechanism to fix the top pins, and then moves and assembles them into the PCB shell. In this way, the chip and pins are assembled in the PCB shell according to the required assembly position; then the conveyor moves to the hot pressing welding (which is a product directly purchased on the market, and the specific principle and structure are the same as the hot pressing welding that can be directly purchased on the market, and the specific details are not repeated) where the PCB is welded to the chip and the pins into one by hot pressing, and finally the conveyor moves to the loading place of the conveyor, where the workers take out the welded products and place new PCB shells, so that production can be carried out more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of an embodiment of a PCB welding system of the present invention;

[0039] Figure 2 yes Figure 1 A magnified view of part A;

[0040] Figure 3 yes Figure 1 A magnified view of part B;

[0041] Figure 4 yes Figure 1 Enlarged view of part C;

[0042] Figure 5 yes Figure 1 A magnified view of part D in the middle;

[0043] Figure 6 yes Figure 1 Enlarged view of part E in the middle;

[0044] Figure 7 It is a cross-sectional view of an embodiment of a conveyor table in a PCB welding system of the present invention.

[0045] Among them, 1. support base plate; 2. conveyor platform; 3. shell profiling groove; 4. PCB support plate; 5. chip support seat; 6. second moving mechanism; 7. pin support frame; 8. third moving mechanism; 9. hot pressing welding; 10. support platform; 11. drive belt; 12. anti-slip column; 13. transition platform; 14. transition belt; 15. first lifting plate; 16. first lifting slope; 17. second lifting plate; 18. second lifting slope; 19. telescopic hole; 20. elastic member; 21. guide member; 22. guide groove; 23. shooting head; 24. limit member; 25. limit groove; 26. positioning cylinder. DETAILED DESCRIPTION

[0046] The following is a further detailed description of a PCB welding system proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0047] A PCB soldering system, such as Figures 1 to 7 As shown, it includes a supporting base plate 1 and the following components arranged on the supporting base plate 1:

[0048] A conveying platform 2, wherein a housing profiling groove 3 is provided on the top of the conveying platform 2, and the housing profiling groove is used to support the PCB housing;

[0049] A first driving mechanism, wherein the first driving mechanism is used to drive the conveying platform 2 to move;

[0050] PCB support plate 4, the PCB support plate 4 is used to support the PCB, and each PCB support plate 4 is pre-placed with multiple PCBs according to a set sequence;

[0051] a first movable suction pipe, wherein the outer end of the first movable suction pipe is connected to a negative pressure pump;

[0052] A first moving mechanism, the first moving mechanism is used to move the first moving straw to move, and move the PCB on the PCB support plate 4 into the PCB housing;

[0053] A chip support seat 5, on which chips are placed, wherein each chip support seat 5 is preferably provided with a plurality of chips in a set direction and form for easy access;

[0054] a second movable suction pipe, wherein the outer end of the second movable suction pipe is connected to a negative pressure pump;

[0055] A second moving mechanism 6, the second moving mechanism 6 is used to move the second moving straw to move the chip on the chip support seat 5 into the PCB housing;

[0056] A pin support frame 7, wherein the pin support frame 7 is used to support a plurality of pins, and the plurality of pins are arranged vertically in sequence;

[0057] A fixing mechanism, the fixing mechanism is used to fix the pins located at the top;

[0058] A third moving mechanism 8, the third moving mechanism 8 is used to move the fixing mechanism to move, and move the pins in the pin support frame 7 into the PCB housing;

[0059] Thermocompression welding 9 is used to weld the pins of the PCB and the chip, and the PCB and the pins.

[0060] The first driving mechanism comprises two support platforms 10 arranged in parallel and at intervals, both ends of the support platforms 10 are rotatably provided with driving rollers, the outer end of one of the driving rollers is provided with a motor, and driving belts 11 are sleeved on the outer walls of the two driving rollers, and the lower side of the driving belt 11 located at the upper side is movably attached to the top of the support platform 10;

[0061] At least two anti-slip columns 12 are disposed at the bottom of both sides of the conveying platform 2 . The anti-slip columns 12 are movably in contact with the outer sides of the corresponding support platforms 10 . The bottom of the conveying platform 2 is in contact with the two driving belts 11 .

[0062] The support platforms 10 are provided in two groups, the two groups of support platforms 10 are of equal height and parallel, and further include:

[0063] A transition platform 13, wherein two transition platforms 13 are provided, and both transition platforms 13 are located between the two ends of the two groups of support platforms 10, and the top of the transition platform 13 is at the same height as the top of the support platform 10;

[0064] Transition rollers, two groups of transition rollers are arranged opposite to each other on the transition platform 13, and the transition rollers are externally connected to motors;

[0065] A transition belt 14, wherein both ends of the transition belt 14 are movably sleeved on the two opposite transition rollers, the length direction of the transition belt 14 is parallel to the length direction of the driving belt 11, and the upper side of the transition belt 14 is movably attached to the top of the transition platform 13;

[0066] A first lifting plate 15, the outer side of the support platform 10 is horizontally provided with the first lifting plate 15, the top of the first lifting plate 15 is at the same height as the top of the support platform 10, the upper side of the top of one end of the first lifting plate 15 close to the middle of the support platform 10 is chamfered, and the upper side surface of the chamfered part of the first lifting plate 15 is a first lifting inclined surface 16;

[0067] A second lifting plate 17 is horizontally disposed on the inner side of the support platform 10. The top of the second lifting plate 17 away from the corresponding support platform 10 is chamfered, and the upper side of the chamfered portion of the second lifting plate 17 is a second lifting slope 18;

[0068] A telescopic hole 19 is vertically opened at the bottom of the conveyor platform 2, and an elastic member 20 is arranged at the top of the telescopic hole 19. The bottom of the elastic member 20 is connected to the top of the anti-slip column 12. The bottom of the anti-slip column 12 is dome-shaped. The first lifting slope 16 and the second lifting slope 18 are used to drive the anti-slip column 12 upward to move and make the anti-slip column 12 enter the telescopic hole 19. The driving belt 11 is used to act on the side of the dome part of the bottom of the driving belt 11, and make the anti-slip column 12 enter the telescopic hole 19.

[0069] The guide member 21 is horizontally arranged on the top of the transition platform 13. A C-shaped guide groove 22 is horizontally opened on the top of the guide member 21. The opening of the guide groove 22 faces the middle direction of the conveying platform 2. The inner walls of the openings at both ends of the guide groove 22 are respectively located on the outer side of the corresponding first lifting plate 15. The guide groove 22 is used to act on the side of the conveying platform 2 and make the conveying platform 2 rotate horizontally 180°.

[0070] The first moving mechanism, the second moving mechanism 6 and the third moving mechanism 8 all include one of a three-axis manipulator, a four-axis manipulator or a five-axis manipulator.

[0071] The thermocompression welders 9 include two, one thermocompression welder 9 is used to weld the pins of the PCB and the chip, and the other thermocompression welder 9 is used to weld the PCB and the pins.

[0072] The supporting base plate 1 is also provided with a camera head 23 , which is located upstream of the hot pressing welding 9 . The camera head 23 is used to take pictures of the workpieces on the conveying platform 2 and analyze whether the placement of the workpieces is qualified.

[0073] The supporting base plate 1 is provided with a plurality of positioning mechanisms for fixing the position of the conveying platform 2 , and the first moving mechanism, the second moving mechanism 6 , the third moving mechanism 8 , the shooting head 23 and the hot pressing welding 9 all have the positioning mechanisms.

[0074] The positioning mechanism comprises:

[0075] A limiting member 24 is provided on the supporting bottom plate 1, and the limiting member 24 is located at the outer side of the corresponding supporting platform 10. A limiting groove 25 is horizontally provided on one side of the limiting member 24 close to the supporting platform 10, and the upper side and the outer side of the limiting groove 25 are used to limit the conveying platform 2;

[0076] The positioning cylinder 26 is vertically arranged below the supporting base plate 1 , a positioning column is vertically arranged on the output shaft of the positioning cylinder 26 , and a positioning hole matching with the positioning column is opened at the bottom of the conveying platform 2 .

[0077] A positioning mechanism is disposed on the support base plate 1 near the edge of the support platform 10 .

[0078] The fixing mechanism comprises a suction cup or a pneumatic clamp.

[0079] The present invention provides a PCB welding system. When welding the PCB, first, a worker manually places the PCB shell into the shell profiling groove 3, and then a first driving mechanism moves the conveying table 2 with multiple PCB shells to the PCB supporting plate 4. At this time, the first moving mechanism moves the first moving suction pipe, and the first moving suction pipe absorbs a PCB through negative pressure, and then transfers and assembles it into the PCB shell; then the first driving mechanism drives the conveying table 2 to continue to move downstream; after moving to the chip supporting seat 5 (the figure is only for illustration and does not represent the actual structure), the second moving mechanism 6 drives the second moving suction pipe to move, and takes out the chip placed on the chip supporting seat 5, and then transfers and assembles it to the corresponding position in the PCB shell. Then the first driving mechanism transports the conveyor table 2 to the side of the pin supporting frame 7. At this time, the third moving mechanism 8 drives the fixing mechanism to fix the top pins, and then moves and assembles them into the PCB shell. In this way, the chip and pins are assembled in the PCB shell according to the required assembly position; then the conveyor table 2 moves to the hot pressing welding 9 (which is a product directly purchased on the market, and the specific principle and structure are the same as the hot pressing welding 9 that can be directly purchased on the market. The specific details are not repeated here), where the PCB is welded to the chip and the pins by hot pressing. Finally, the conveyor table 2 moves to the loading position of the conveyor table 2, where the workers take out the welded products and place new PCB shells, so that production can be carried out more efficiently.

[0080] During the actual assembly, the positioning cylinder 26 near the edge of the support platform 10 rises, and the positioning column is inserted into the positioning hole of the corresponding conveyor platform 2. At the same time, the two outer sides and the top of the conveyor platform 2 are respectively limited by the limiting grooves 25, so that the position stability of the conveyor platform 2 can be guaranteed (the same is true for the positioning mechanisms in other places); then the workers can easily take out the welded PCB shell from the shell profiling groove 3 and buckle the new PCB shell. Then the positioning cylinder 26 moves downward, and the driving belt 11 can drive the conveyor platform 2 to continue to move downstream. At the same time, the bottom of both sides of the conveyor platform 2 is respectively attached to the outer side of the corresponding support platform 10 through the anti-slip columns 12, so that the conveyor platform 2 can move forward stably.

[0081] When the conveyor platform 2 moves to the edge close to the support platform 10, the anti-slip column 12 at the bottom is first affected by the first lifting slope 16, so that the anti-slip column 12 moves upward and compresses the elastic member 20 until the bottom of the anti-slip column 12 is movably fitted on the top of the first lifting plate 15; at this time, the driving belt 11 still applies driving force to the bottom of the conveyor platform 2, and at the same time, the two pairs of side edges of the conveyor platform 2 are guided by the guide groove 22, and the angle changes; when the anti-slip column 12 moves to the edge of the driving belt 11, since the bottom of the anti-slip column 12 is dome-shaped, when the edge of the anti-slip column 12 acts on the side of the driving belt 11, the driving belt 11 can also drive the anti-slip column 12 upward and make the anti-slip column 12 move upward, so that the anti-slip column 12 can pass over the driving belt 11.

[0082] At the same time, when the anti-slip column 12 moves between the two support platforms 10, the anti-slip column 12 moves downward under the action of gravity and the elastic force of the elastic member 20, so that the bottom of the anti-slip column 12 is lower than the bottom of the conveying platform 2; but because the second lifting inclined surface 18 of the second lifting plate 17 can also drive the anti-slip column 12 upward, the second lifting plate 17 can drive the anti-slip column 12 upward again, so that the anti-slip column 12 can move to the top surface of the support platform 10 again; when the conveying platform 2 moves to the middle of the transition platform 13, the transition roller is driven to rotate, and the transition belt 14 is driven to rotate at the same time, so that the transition belt 14 can apply a driving force to the conveying platform 2, and the conveying platform 2 can continue to move downstream, and until it moves to a group of support platforms 10 on the side; since the support platform 10 has two groups, and the two ends of the two groups of support platforms 10 are provided with structures such as the transition platform 13 and the guide member 21, the conveying platform 2 can be circulated. The conveyor table 2 can cyclically remove the finished products, place the empty PCB shells, assemble chips, assemble pins, take pictures and detect with the camera 23, and perform hot pressing, which greatly improves the production efficiency.

[0083] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A PCB welding system, characterized in that: It comprises a supporting base plate (1) and arranged on the supporting base plate (1): A conveying platform (2), wherein a housing profiling groove (3) is provided on the top of the conveying platform (2), and the housing profiling groove is used to support the PCB housing; A first driving mechanism, the first driving mechanism is used to drive the conveying platform (2) to move; A PCB support plate (4), wherein the PCB support plate (4) is used to support the PCB; a first movable suction pipe, wherein the outer end of the first movable suction pipe is connected to a negative pressure pump; A first moving mechanism, the first moving mechanism is used to move the first moving straw to move, and to move the PCB on the PCB support plate (4) into the PCB housing; A chip support seat (5), the chip support seat (5) being used for placing the chip; a second movable suction pipe, wherein the outer end of the second movable suction pipe is connected to a negative pressure pump; A second moving mechanism (6), the second moving mechanism (6) is used to move the second moving straw to move and move the chip on the chip support seat (5) into the PCB housing; A pin support frame (7), the pin support frame (7) is used to support a plurality of pins, the plurality of pins are arranged vertically in sequence; A fixing mechanism, the fixing mechanism is used to fix the pins located at the top; A third moving mechanism (8), the third moving mechanism (8) being used to move the fixing mechanism to move, and to move the pins in the pin support frame (7) into the PCB housing; Thermocompression welding (9) is used to weld the pins of the PCB and the chip, and the PCB and the pins.

2. A PCB welding system according to claim 1, characterized in that: The first driving mechanism comprises two support platforms (10) arranged in parallel and at intervals, both ends of the support platforms (10) are rotatably provided with driving rollers, the outer end of one of the driving rollers is provided with a motor, and driving belts (11) are sleeved on the outer walls of the two driving rollers, and the lower side of the driving belt (11) located at the upper side is movably fitted to the top of the support platform (10); At least two anti-slip columns (12) are arranged at the bottom of both sides of the conveying platform (2), and the anti-slip columns (12) are movably in contact with the outer sides of the corresponding support platforms (10), and the bottom of the conveying platform (2) is in contact with the two driving belts (11).

3. A PCB welding system according to claim 2, characterized in that: The support platforms (10) are provided in two groups, the two groups of support platforms (10) are of equal height and parallel, and further include: A transition platform (13), wherein two transition platforms (13) are provided, and the two transition platforms (13) are both located between the two ends of the two groups of support platforms (10), and the top of the transition platform (13) is at the same height as the top of the support platform (10); Transition rollers, two groups of transition rollers are arranged opposite to each other on the transition platform (13), and the transition rollers are externally connected to motors; A transition belt (14), wherein two ends of the transition belt (14) are movably sleeved on two opposite transition rollers, the length direction of the transition belt (14) is parallel to the length direction of the drive belt (11), and the upper side of the transition belt (14) is movably fitted on the top of the transition platform (13); A first lifting plate (15), the first lifting plate (15) is horizontally arranged on the outer side of the support platform (10), the top of the first lifting plate (15) is at the same height as the top of the support platform (10), the upper side of the top of one end of the first lifting plate (15) close to the middle of the support platform (10) is chamfered, and the upper side surface of the chamfered part of the first lifting plate (15) is a first lifting inclined surface (16); A second lifting plate (17), the second lifting plate (17) being horizontally arranged on the inner side of the support platform (10), the top of the second lifting plate (17) away from the corresponding support platform (10) being chamfered, and the upper side surface of the chamfered portion of the second lifting plate (17) being a second lifting inclined surface (18); A telescopic hole (19) is vertically opened at the bottom of the conveying platform (2), an elastic member (20) is arranged at the top of the telescopic hole (19), the bottom of the elastic member (20) is connected to the top of the anti-slip column (12), the bottom of the anti-slip column (12) is dome-shaped, the first lifting slope (16) and the second lifting slope (18) are used to drive the anti-slip column (12) upward to move, and make the anti-slip column (12) enter the telescopic hole (19), the driving belt (11) is used to act on the side of the dome part of the bottom of the driving belt (11), and make the anti-slip column (12) enter the telescopic hole (19); A guide member (21), the guide member (21) is horizontally arranged on the top of the transition platform (13), and a C-shaped guide groove (22) is horizontally opened on the top of the guide member (21), the opening of the guide groove (22) is oriented toward the middle of the conveying platform (2), and the inner walls of the openings at both ends of the guide groove (22) are respectively located on the outer side of the corresponding first lifting plate (15), and the guide groove (22) is used to act on the side of the conveying platform (2) and make the conveying platform (2) rotate horizontally 180 degrees.

4. A PCB welding system according to claim 3, characterized in that: The first moving mechanism, the second moving mechanism (6) and the third moving mechanism (8) all comprise a three-axis manipulator, a four-axis manipulator or a five-axis manipulator.

5. A PCB welding system according to claim 2, characterized in that: The thermocompression welders (9) include two, one thermocompression welder (9) is used to weld the pins of the PCB and the chip, and the other thermocompression welder (9) is used to weld the PCB and the pins.

6. A PCB welding system according to claim 5, characterized in that: The supporting base plate (1) is also provided with a photographing head (23), the photographing head (23) being located upstream of the hot pressing welding (9), and the photographing head (23) being used to take a photograph of the workpiece on the conveying platform (2) and to analyze whether the placement of the workpiece is qualified.

7. A PCB welding system according to claim 6, characterized in that: The supporting base plate (1) is provided with a plurality of positioning mechanisms for fixing the position of the conveying platform (2), and the first moving mechanism, the second moving mechanism (6), the third moving mechanism (8), the shooting head (23) and the hot pressing welding (9) all have the positioning mechanisms.

8. A PCB welding system according to claim 7, characterized in that: The positioning mechanism comprises: a limiting member (24) disposed on the supporting bottom plate (1), the limiting member (24) being located on the outer side of the corresponding supporting platform (10), a limiting groove (25) being horizontally provided on a side of the limiting member (24) close to the supporting platform (10), the upper side and the outer side of the limiting groove (25) being used for limiting the conveying platform (2); A positioning cylinder (26), the positioning cylinder (26) is vertically arranged below the supporting base plate (1), a positioning column is vertically arranged on the output shaft of the positioning cylinder (26), and a positioning hole matching with the positioning column is opened at the bottom of the conveying platform (2).

9. A PCB welding system according to claim 8, characterized in that: A positioning mechanism is provided on the supporting base plate (1) close to the edge of the supporting platform (10).

10. A PCB welding system according to claim 1, characterized in that: The fixing mechanism comprises a suction cup or a pneumatic clamp.

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