A spot welding device for PCBA board processing

Abstract

The present invention relates to the technical field of PCBA board welding, and discloses a spot welding device for PCBA board processing, including a welding tabletop. One side of the top of the welding tabletop is provided with a horizontal moving table. A telescopic arm is installed on one side of the horizontal moving table close to the middle of the welding tabletop. A spot welding gun head is installed at the bottom of the telescopic arm and close to the middle of the welding tabletop. It is characterized in that: a welding conveyor belt is installed in the middle of the top of the welding tabletop, and transmission fixing frames are arranged on both sides of the middle of the welding conveyor belt. By providing a clamping device and a blocking device, the present invention is beneficial to pressing the mold body against a defined position through the action of the clamping plate, the limiting baffle and the first blocking rod. When welding in the later stage, the clamping device and the blocking device can limit the PCBA board to be welded at a specified position, reducing the participation of manual labor and eliminating the need for manual placement of the PCBA board at a specified position, greatly improving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of PCBA board soldering, and more specifically to a spot welding device for PCBA board processing. Background Art

[0002] PCBA board spot welding refers to soldering the solder joints of the PCB board with electrical components, mainly using the motion function of a manipulator to complete the soldering operation;

[0003] During the soldering operation, it is necessary to fix the PCBA board to be soldered at a specified position according to its location. Generally, a mold shell is placed on the table, and each PCB board is placed in the specified mold shell for automated soldering.

[0004] However, in the actual use process, it is necessary to manually take out the soldered PCB board and at the same time replace it with a new one. During the replacement, it is generally necessary to wait for a period of time because there is residual temperature on the PCB board after soldering, which causes a need to wait for a while for manual replacement, resulting in a waste of a large amount of time for replacing new PCBA boards. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a spot welding device for PCBA board processing to solve the problems existing in the above background art.

[0006] The present invention provides the following technical solution: A spot welding device for PCBA board processing, including a welding tabletop. One side of the top of the welding tabletop is provided with a horizontal moving table. The horizontal moving table is provided with a telescopic arm on one side near the middle of the welding tabletop. The bottom end of the telescopic arm and near the middle of the welding tabletop is provided with a spot welding gun head. It is characterized in that: In the middle of the top of the welding tabletop, a welding conveyor belt is installed. On both sides of the middle of the welding conveyor belt, there are conveyor fixing frames. The bottom ends of the conveyor fixing frames are fixedly connected to the top of the welding tabletop. Inside the welding conveyor belt and at one end of the conveyor fixing frame, there is a main transmission shaft in transmission connection. Inside the welding conveyor belt and at the other end of the conveyor fixing frame, there is an auxiliary transmission shaft in transmission connection. On the top of the conveyor fixing frames, on the side close to each other, there are limit baffles fixedly installed. On one side of the conveyor fixing frame where the main transmission shaft is located and close to the horizontal moving table, there is a conveyor motor. The conveyor motor is connected to the main transmission shaft through a belt drive. Inside the welding conveyor belt, there are support rotating rods arranged at equal intervals. The middle parts of the support rotating rods are all movably clamped with fixing rods. The conveyor fixing frames are kept in a fixed position through the fixing rods of the support rotating rods.

[0007] Further, the conveying motor drives the welding conveyor belt to convey by transmitting power to the main transmission shaft. At the top of the support rotating rod in the middle of the welding conveyor belt, a support plate is installed. At the bottom of the support plate, equidistantly arranged clamping grooves are opened. On both sides of each clamping groove, a clamping block is fixedly connected. The support plate is fixedly clamped with the support rotating rod through the clamping grooves and the clamping blocks. Arc angles are opened at both ends of the support plate. At one end of the limit baffle close to the horizontal moving table, a clamping recovery opening is opened. At the top of the conveying fixed frame at the clamping recovery opening, a clamping device is installed.

[0008] Further, the clamping device includes a clamping bottom plate. The top of the conveying fixed frame is fixedly connected to the bottom end of the clamping bottom plate at the clamping recovery opening. On the top of the clamping bottom plate, a clamping propulsion cylinder is installed. The push rod of the clamping propulsion cylinder is fixedly connected to a clamping plate. When the clamping propulsion cylinder is in the retracted state, the clamping plate is flush with the limit baffle at its position in the horizontal direction. On the top of both conveying fixed frames on the side of the clamping plate away from the conveying motor, a blocking device is connected.

[0009] Further, the blocking device includes a first blocking telescopic cylinder and a first blocking rod. The bottom end of the first blocking telescopic cylinder is fixedly connected to the conveying fixed frame. The top end of the first blocking telescopic cylinder is fixedly connected to the first blocking rod. Cooling devices are installed at one ends of both conveying fixed frames away from the conveying motor.

[0010] Further, the cooling device includes a second blocking rod and a second blocking telescopic cylinder. The bottom ends of the second blocking rods are fixedly connected to the top of the conveying fixed frame. A mold body is placed on the welding conveyor belt.

[0011] Further, on the top of the mold body, an A-plate placement groove is opened. At the bottom of the A-plate placement groove, a component placement groove is opened. Identification areas are opened in the middle of both sides connected to the top of the mold body. An electronic component is movably installed in the component placement groove. A PCB board body is movably installed on the top of the electronic component. The A-plate placement groove is movably clamped with the bottom end of the PCB board body.

[0012] Further, an image sensor is provided in the spot welding gun head. When the image sensor in the spot welding gun head senses whether there is a mold body on the welding conveyor belt reaching the clamping device, it will start the first blocking telescopic cylinder to lower the first blocking rod to block the continuous backward movement of the mold body. At this time, the image sensor preferentially detects the position of the identification area on the top of the mold body, determines and stores the welding image recorded by the software in the telescopic arm according to the position of the identification area, and rotates or processes the welded image according to the position of the identification area to ensure the accuracy rate when the spot welding gun head performs welding.

[0013] A spot welding system for PCBA board processing, including the following:

[0014] S1. First, mark the area between the first stop bar and the clamping device on the welding conveyor belt, and set the positions of the first stop bar, the clamping plate, and the limit baffle on the reserved mold body as the welding positions. When marking, it is necessary to reserve the position recognition information of the identification areas in four directions in the software system of the spot welding gun head. By identifying the information of the identification areas, determine the angle direction of rotation of the overall welding path within the system, so as to modify each welding point on the PCB board body marked in the welding software according to the rotation direction of the identification area.

[0015] S2. At the same time, the system will reserve the welding recognition position information of the identification areas in four directions at the positions resisted by the first stop bar, the clamping plate, and the limit baffle. When the clamping plate is pushed and the first stop bar is blocked, the spot welding gun head will detect the actual position information of the mold body and compare it with the welding recognition position information reserved by the system. If, during the comparison, the welding recognition position information of the actual identification area is different from the reserved welding recognition position information of the identification area, the welding conveyor belt will continue to rotate until the identification area coincides with the mark of the identification area in the system software. At this time, the spot welding gun head will control the conveyor motor to power off. If the position of the identification area is the same as the reserved welding recognition position information of the identification area in the system, the spot welding gun head will control the conveyor motor to power off for welding. If, after welding is completed, the system will receive that all the solder joints on the PCB board body have been welded by the spot welding gun head.

[0016] S3. At this time, the spot welding gun head will send instructions to the conveyor motor, the clamping propulsion cylinder, and the second stop bar. With the issuance of the instructions, the welding conveyor belt will start to convey, the first stop telescopic cylinder will lift the rod, the clamping propulsion cylinder will retract the clamping plate, and the second stop bar will perform a lowering operation, and so on in a cycle.

[0017] The technical effects and advantages of the present invention:

[0018] By providing a clamping device and a blocking device, the present invention is beneficial to pressing the mold body against the defined position through the action of the clamping plate, the limit baffle, and the first stop bar. When welding in the later stage, the clamping device and the blocking device can limit the PCBA board to be welded in the specified position, reduce the participation of manual labor, and do not require manual placement of the PCBA board in the specified position, greatly improving safety.

[0019] In the present invention, by providing a mold body, it is beneficial for workers to place electronic components in the A-board placement groove of the mold body and then place the PCB board body on the A-board placement groove of the mold body. It can be conveyed to the soldering conveyor belt through the conveyor belt in the assembly workshop, and then the soldering operation can be automated.

[0020] In the present invention, by providing a cooling device, the second blocking telescopic cylinder receives an instruction to control the lowering operation of the second blocking rod. After the lowering operation, the blocking of the mold body is completed at this time. However, when the first blocking telescopic cylinder continues to block a new mold body that has not been soldered, the second blocking telescopic cylinder will raise the second blocking rod to release the cooled mold body.

[0021] In the present invention, through the spot welding system for PCBA board processing, the area between the first blocking rod and the clamping device on the soldering conveyor belt is marked, and the positions of the mold body reserved by the first blocking rod, the clamping plate, and the limit baffle are set as the welding positions. When marking, it is necessary to identify the position information of the four-direction identification areas reserved in the software system of the spot welding gun head. By identifying the information in the identification areas, the rotation angle direction to be rotated is determined, so as to modify each welding point position on the PCB board body marked in the welding software according to the rotation direction required by the identification area, which greatly improves the accuracy and ensures the accuracy of soldering and the position where the PCB board is located. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the soldering conveyor belt of the present invention.

[0024] Figure 3 It is an exploded schematic diagram of the structure of the soldering conveyor belt of the present invention.

[0025] Figure 4 It is an exploded schematic diagram of the internal structure of the soldering conveyor belt of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the support plate of the present invention.

[0027] Figure 6 It is an exploded schematic diagram of the structure of the mold body of the present invention.

[0028] Figure 7 It is a schematic diagram of a spot welding system for PCBA board processing of the present invention.

[0029] The reference numerals are: 1, welding tabletop; 2, horizontal moving table; 3, telescopic arm; 4, spot welding gun head; 5, welding conveyor belt; 501, conveyor fixing frame; 502, limit baffle; 5021, clamping recovery port; 503, conveyor motor; 5031, main transmission shaft; 5032, auxiliary transmission shaft; 504, supporting rotating rod; 505, supporting plate; 5051, clamping groove; 5052, clamping block; 6, blocking device; 601, first blocking telescopic cylinder; 602, first blocking rod; 7, cooling device; 701, second blocking rod; 702, second blocking telescopic cylinder; 8, clamping device; 801, clamping bottom plate; 802, clamping propulsion cylinder; 803, clamping plate; 9, mold body; 901, A plate placement groove; 9011, component placement groove; 902, identification area; 10, electronic component; 11, PCB board body. Detailed implementation manners

[0030] The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. In addition, the forms of the respective structures described in the following embodiments are merely examples, and the spot welding device for PCBA board processing according to the present invention is not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] Refer to Figures 1-6, the present invention provides a spot welding device for PCBA board processing, including a welding table 1. On one side of the top end of the welding table 1, a horizontal moving table 2 is installed. On one side of the middle of the horizontal moving table 2 close to the welding table 1, a telescopic arm 3 is installed. At the bottom end of the telescopic arm 3 and in the middle of the welding table 1, a spot welding gun head 4 is installed. In the middle of the top end of the welding table 1, a welding conveyor belt 5 is installed. On both sides of the middle of the welding conveyor belt 5, there are conveying fixing frames 501. The bottom ends of the conveying fixing frames 501 are fixedly connected to the top end of the welding table 1. Inside the welding conveyor belt 5 and at one end of the conveying fixing frame 501, a main transmission shaft 5031 is in transmission connection. Inside the welding conveyor belt 5 and at the other end of the conveying fixing frame 501, an auxiliary transmission shaft 5032 is in transmission connection. On the side of the top ends of the conveying fixing frames 501 close to each other, limiting baffles 502 are fixedly installed. The limiting baffles 502 are used for blocking to prevent the mold body 9 from detaching from the welding conveyor belt 5. On one side of the conveying fixing frame 501 at the end of the main transmission shaft 5031 and close to the horizontal moving table 2, there is a conveying motor 503. The conveying motor 503 is connected to the main transmission shaft 5031 through a belt drive. Inside the welding conveyor belt 5, support rotating rods 504 are arranged at equal intervals. Fixing rods are movably clamped in the middle of the support rotating rods 504. The conveying fixing frames 501 are kept in a fixed position through the fixing rods of the support rotating rods 504. The conveying motor 503 drives the welding conveyor belt 5 to convey by transmitting power to the main transmission shaft 5031. At the top end of the support rotating rod 504 in the middle of the welding conveyor belt 5, a support plate 505 is installed. At the bottom end of the support plate 505, equally spaced clamping grooves 5051 are opened. On both sides of the clamping grooves 5051, clamping blocks 5052 are fixedly connected. The support plate 505 is fixedly clamped with the support rotating rod 504 through the clamping grooves 5051 and the clamping blocks 5052. At both ends of the support plate 505, arc angles are opened. At one end of the limiting baffle 502 close to the horizontal moving table 2, a clamping recovery opening 5021 is opened. By providing the support plate 505, it is ensured that during welding, when the welding gun of the spot welding gun head 4 presses down, the welding conveyor belt 5 will not deform due to its properties, so there will be no problem of deviation. At the top end of the conveying fixing frame 501 at the clamping recovery opening 5021, a clamping device 8 is installed. The clamping device 8 includes a clamping bottom plate 801. The top end of the conveying fixing frame 501 at the clamping recovery opening 5021 is fixedly connected to the bottom end of the clamping bottom plate 801. On the top end of the clamping bottom plate 801, a clamping propulsion cylinder 802 is installed. The push rod of the clamping propulsion cylinder 802 is fixedly connected to a clamping plate 803. In the retracted state of the clamping propulsion cylinder 802, the clamping plate 803 is flush with the limiting baffle 502 at its position in the horizontal direction. On the top ends of both conveying fixing frames 501 on the side of the clamping plate 803 away from the conveying motor 503, a blocking device 6 is connected. Through the image sensor and the precise mechanical positioning device, the system can accurately identify and position the parts to be welded, ensuring the accuracy of the welding position, thereby improving the welding quality.The blocking device 6 includes a first blocking telescopic cylinder 601 and a first blocking rod 602. The bottom end of the first blocking telescopic cylinder 601 is fixedly connected to the conveyor fixing frame 501, and the top end of the first blocking telescopic cylinder 601 is fixedly connected to the first blocking rod 602. Cooling devices 7 are installed at one end of the two conveyor fixing frames 501 away from the conveyor motor 503. The cooling device 7 includes a second blocking rod 701 and a second blocking telescopic cylinder 702. The bottom ends of the second blocking rods 701 are fixedly connected to the top ends of the conveyor fixing frames 501. A mold body 9 is placed on the welding conveyor belt 5. An A-plate placement groove 901 is opened at the top end of the mold body 9, and a component placement groove 9011 is opened at the bottom end of the A-plate placement groove 901. Identification areas 902 are opened in the middle of the two sides connected to the top end of the mold body 9. An electronic component 10 is movably installed in the component placement groove 9011. There are through holes in the component placement groove 9011, which facilitate ventilation with the outside world after the electronic component 10 is installed in the component placement groove 9011, facilitating later disassembly. A PCB board main body 11 is movably installed at the top end of the electronic component 10. The A-plate placement groove 901 is movably clamped to the bottom end of the PCB board main body 11. An image sensor is provided in the spot welding gun head 4. When the image sensor in the spot welding gun head 4 senses whether there is a mold body 9 on the welding conveyor belt 5 reaching the clamping device 8, it will start the first blocking telescopic cylinder 601 to lower the first blocking rod 602 to block the continuous backward movement of the mold body 9. At this time, the image sensor preferentially detects the position of the identification area 902 at the top end of the mold body 9, determines and stores the welding image recorded by the software in the telescopic arm 3 according to the position of the identification area 902, and rotates or processes the welded image according to the position of the identification area 902 to ensure the accuracy rate during spot welding by the spot welding gun head 4, so that the welding range to be welded is always kept consistent during welding, reducing the traditional manual placement method. And in the actual installation process, only need to manually place the electronic component 10 in the A-plate placement groove 901 of the mold body 9, and then place the PCB board main body 11 on the A-plate placement groove 901 of the mold body 9, and it can be automatically conveyed to the welding conveyor belt 5 through the conveyor belt in the assembly workshop, and then the soldering operation can be carried out automatically, greatly improving the welding speed of the PCB board. The entire welding process is highly automated. From the installation, positioning, transmission, identification of parts to the final welding operation, it is all completed through preset programs and mechanical structures, reducing the dependence on manual operations and improving production efficiency and consistency;

[0032] First, mark the area on the welding conveyor belt 5 between the first stop bar 602 and the clamping device 8, and set the position of the mold body 9 reserved by the first stop bar 602, the clamping plate 803, and the limit baffle 502 as the welding position. When marking, it is necessary to identify the position information of the identification area 902 reserved in four directions in the software system of the spot welding gun head 4. By identifying the information of the identification area 902, determine the angle direction of rotation of the overall welding path within the system, so as to modify each welding point position on the PCB board body 11 marked in the welding software according to the rotation direction required by the identification area 902. At the same time, the system will reserve the welding identification position information of the identification area 902 in four directions at the positions resisted by the first stop bar 602, the clamping plate 803, and the limit baffle 502. When the clamping plate 803 is pushed and the first stop bar 602 is blocked, the spot welding gun head 4 will detect the actual position information of the mold body 9 and compare it with the welding identification position information reserved by the system. If, during the comparison, the welding identification position information of the actual identification area 902 is different from the reserved welding identification position information of the identification area 902, the welding conveyor belt 5 will continue to rotate until the identification area 902 coincides with the mark of the identification area 902 in the system software. At this time, the spot welding gun head 4 will control the conveyor motor 503 to power off. If the position of the identification area 902 is the same as the reserved welding identification position information of the identification area 902 in the system, the spot welding gun head 4 will control the conveyor motor 503 to power off for welding. After the welding is completed, if the system receives that all the solder joints on the PCB board body 11 have been welded by the spot welding gun head 4, at this time, the spot welding gun head 4 will send commands to the conveyor motor 503, the clamping propulsion cylinder 802, and the second stop bar 701. With the issuance of the commands, the welding conveyor belt 5 will start to convey, the first stop telescopic cylinder 601 will raise the rod, the clamping propulsion cylinder 802 will retract the clamping plate 803, and the second stop bar 701 will perform a lowering operation, and so on in a cycle.

[0033] Working principle of the present invention:

[0034] During use, first install all the electronic components 10 in the component placement groove 9011 of the mold body 9, and then install the PCB board body 11 in the A-board placement groove 901. After installation, place the installed mold body 9 on the welding conveyor belt 5. At this time, the conveyor motor 503 is in the on state. When the mold body 9 on the welding conveyor belt 5 starts to be conveyed in the direction of the clamping device 8 driven by the main drive shaft 5031 rotated by the conveyor motor 503, the image sensor at the spot welding gun head 4 will sense the position of the mold body 9, and at the same time, quickly identify the correct welding direction of the PCB board body 11 through the identification area 902 on the mold body 9. When the welding machine detects the correct welding direction, the first blocking telescopic cylinder 601 at the blocking device 6 is started to lower the raised first blocking rod 602. After lowering, it will block the mold body 9 from moving in the direction of the cooling device 7. As the process continues, the lowered first blocking rod 602 will block the continuous movement of the mold body 9, and at this time, the clamping push cylinder 802 will push out the clamping plate 803. When pushing out, the mold body 9 will be pushed against the intersection of the notchless limit baffle 502 and the first blocking rod 602. At this time, the mold body 9 is pressed against the defined position by the action of the clamping plate 803, the limit baffle 502, and the first blocking rod 602. At this time, the image sensor is used to determine whether the current position of the mold body 9 is within the pre-selected area position. After determination, the power supply of the conveyor motor 503 will be automatically turned off, so that the welding conveyor belt 5 cannot be conveyed. At this time, the spot welding gun head 4 performs spot welding according to the welding potential after the actual scene transformation through the internal programming software. During the spot welding process, due to the support of the support plate 505, when spot welding, the mold body 9 will not cause the welding conveyor belt 5 to bend due to the pressure applied by the spot welding gun head 4, thus ensuring the accuracy during spot welding. After welding is completed, when the spot welding gun head 4 receives the welding completion instruction of the program, the conveyor motor 503 will be turned on, and at the same time, the clamping push cylinder 802 will be started to retract the clamping plate 803 and the first blocking telescopic cylinder 601 will perform a raising operation. As the welding conveyor belt 5 is conveyed, during the process, at the same time, the second blocking telescopic cylinder 702 receives an instruction to control the lowering operation of the second blocking rod 701. After the lowering operation, the blocking of the mold body 9 is completed. But at the same time, when the first blocking telescopic cylinder 601 continues to block a new un-welded mold body 9, the second blocking telescopic cylinder 702 will raise the second blocking rod 701 to release the cooled mold body 9, and at the same time, the spot welding gun head 4 will weld the PCB board body 11 in the mold body 9 at the first blocking rod 602.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A spot welding device for PCBA board processing, comprising a welding table (1), a horizontal moving table (2) is installed on one side of the top of the welding table (1), a telescopic arm (3) is installed on one side of the horizontal moving table (2) located near the middle of the welding table (1), and a spot welding gun head (4) is installed at the bottom end of the telescopic arm (3) and located near the middle of the welding table (1), characterized in that: A welding conveyor belt (5) is installed in the middle of the top of the welding table (1), and conveyor fixed frames (501) are provided on both sides of the middle of the welding conveyor belt (5), and the bottom ends of the conveyor fixed frames (501) are fixedly connected to the top of the welding table (1), and one end of the welding conveyor belt (5) located inside the conveyor fixed frame (501) is connected to the main transmission shaft (5031) in a transmission manner, and the other end of the welding conveyor belt (5) located inside the conveyor fixed frame (501) is connected to the auxiliary transmission shaft (5032) in a transmission manner, and the conveyor fixed frame (501) is connected to the main transmission shaft (5031) in a transmission manner. A limit baffle (502) is fixedly installed on the side where the top ends are close to each other, the transmission fixed frame (501) is located at one end of the main transmission shaft (5031) and is close to the horizontal moving platform (2) and is provided with a transmission motor (503), the transmission motor (503) is connected to the main transmission shaft (5031) through a belt drive, and support rotating rods (504) are arranged equidistantly inside the welding conveyor belt (5), and the middle part of the support rotating rod (504) is movably connected with a fixed rod, and the fixed position between the transmission fixed frames (501) is maintained by the fixed rod of the support rotating rod (504); The transmission motor (503) drives the welding conveyor belt (5) for transmission by transmitting to the main transmission shaft (5031); a support plate (505) is installed at the top end of the support rotating rod (504) located in the middle of the welding conveyor belt (5); the bottom end of the support plate (505) is provided with equidistantly arranged clamping grooves (5051); both sides of the clamping grooves (5051) are fixedly connected with clamping blocks (5052); the support plate (505) is fixedly clamped with the support rotating rod (504) through the clamping grooves (5051) and the clamping blocks (5052); arc angles are provided at both ends of the support plate (505); and a clamping recovery port (5021) is provided at one end of the limit baffle (502) located close to the horizontal moving platform (2); The top end of the conveying fixed frame (501) is located at the clamping recovery port (5021) and is provided with a clamping device (8), the clamping device (8) comprises a clamping base plate (801), the top end of the conveying fixed frame (501) located at the clamping recovery port (5021) is fixedly connected to the bottom end of the clamping base plate (801), the top end of the clamping base plate (801) is provided with a clamping propulsion cylinder (802), the push rod of the clamping propulsion cylinder (802) is fixedly connected to a clamping plate (803), and when the clamping propulsion cylinder (802) is in the retracted state, the clamping plate (803) is horizontally flush with the position limit baffle (502) at the location; The top ends of the two conveying fixed frames (501) located on the side of the clamping plate (803) away from the conveying motor (503) are both connected to a blocking device (6), and the blocking device (6) comprises a first blocking telescopic cylinder (601) and a first blocking rod (602), the bottom end of the first blocking telescopic cylinder (601) is fixedly connected to the conveying fixed frame (501), and the top end of the first blocking telescopic cylinder (601) is fixedly connected to the first blocking rod (602); A cooling device (7) is installed at one end of the two conveying fixed frames (501) away from the conveying motor (503), and the cooling device (7) comprises a second blocking rod (701) and a second blocking telescopic cylinder (702), the bottom end of the second blocking telescopic cylinder (702) is fixedly connected to the top end of the conveying fixed frame (501), and the top end of the second blocking telescopic cylinder (702) is fixedly connected to the second blocking rod (701); A mold body (9) is placed on the welding conveyor belt (5); an A-board placement groove (901) is provided at the top of the mold body (9); a component placement groove (9011) is provided at the bottom of the A-board placement groove (901); marking areas (902) are provided in the middle of two sides connected to the top of the mold body (9); electronic components (10) are movably installed in the component placement groove (9011); a PCB board body (11) is movably installed at the top of the electronic component (10); and the A-board placement groove (901) is movably connected to the bottom of the PCB board body (11); An image sensor is provided in the spot welding gun head (4). The image sensor in the spot welding gun head (4) is used to sense that when a mold body (9) on the welding conveyor belt (5) reaches the clamping device (8), the first blocking telescopic cylinder (601) is activated to lower the first blocking rod (602) to block the mold body (9) from continuing to move backward. At this time, the image sensor detects the position of the identification area (902) at the top of the mold body (9), determines the welding image recorded by the software stored in the telescopic arm (3) according to the position of the identification area (902), and rotates or processes the welded image according to the position of the identification area (902) to ensure the accuracy of welding when the spot welding gun head (4) is performing welding.

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