PCB (Printed Circuit Board) double-sided brazing device for computer

Abstract

The invention discloses a PCB double-face brazing device for a computer, and relates to the technical field of circuit board welding assistion.The PCB double-face brazing device comprises a workbench, a supporting frame is fixedly connected to the upper end face of the workbench, and a welding gun is connected to the supporting frame in a penetrating and clamping mode. By directly overturning the whole welding table, a worker can quickly weld the other side of the circuit board, so that the operation complexity is reduced, the time is saved, the welding efficiency is improved, the damage to welded elements or welding spots on the circuit board due to improper operation or overlarge force in the manual overturning process is avoided through automatic overturning, and the production efficiency is improved. According to the circuit board overturning device, the stability of the welding quality is guaranteed, the circuit board scrapping situation caused by misoperation is reduced, in the overturning process, the circuit board is stably clamped in the device, direct contact between the circuit board and an external object is reduced, and therefore the risk of scratching or pollution is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board welding assistance, in particular to a PCB double-sided soldering device for computers. Background Art

[0002] Computer PCB is a substrate used to connect electronic components. It forms conductive lines and pads on an insulating substrate through printing technology to achieve electrical connections between electronic components. It is a core component of modern electronic devices, especially computers, carrying important components such as CPU, memory, graphics card, etc. to ensure the normal operation of the computer.

[0003] In the process of soldering circuit boards, auxiliary devices are usually used to fix the circuit boards to facilitate workers to solder on the surface of the circuit boards. Since the existing auxiliary devices are fixed by clamping the side walls of the circuit boards, after the workers have completed soldering on one side of the circuit boards, they need to manually turn the circuit boards over to facilitate workers to solder on the other side of the circuit boards. This not only increases the complexity of the operation, but also requires workers to readjust the clamping angle and welding position of the circuit boards, reducing the welding efficiency. In addition, when manually flipping the circuit boards, improper operation or excessive force may damage the soldered components or solder joints on the circuit boards, resulting in a decline in welding quality or even the scrapping of the circuit boards. At the same time, the contact between the circuit boards and the auxiliary devices or other objects during the flipping process may also cause scratches or contamination.

[0004] Therefore, the present invention proposes a double-sided soldering device for a computer PCB to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a double-sided soldering device for a PCB for a computer, which can effectively solve the problems in the prior art.

[0007] (II) Technical solution

[0008] To achieve the above object, the object of the present invention can be achieved by the following technical solutions:

[0009] A double-sided soldering device for a computer PCB comprises a workbench, wherein the upper end surface of the workbench is fixedly connected to a support frame, a welding gun is inserted through the support frame, the upper end surface of the workbench is symmetrically fixedly connected to side panels, a flexible clamping and flipping mechanism for a circuit board is arranged between the side panels, the flexible clamping and flipping mechanism for a circuit board comprises a welding table, a rotating shaft is fixedly connected to one side of the welding table close to the side panel, the rotating shaft is rotatably connected to the side wall of the side panel, a through groove is provided at the center of the welding table, the flexible clamping and flipping mechanism for a circuit board is used to drive the circuit board to flip stably, a flip limiting mechanism is arranged between the rotating shafts, and the flip limiting mechanism is used to increase the stability during and after the flipping of the rotating shaft.

[0010] As a further solution of the present invention: the upper end surface of the welding table is symmetrically and slidably connected with a center plate, the lower end surface of the center plate is fixedly connected with a connecting column, the lower end of the connecting column is fixedly connected with a movable frame, the movable frames are horizontally slidably connected to the side wall of the welding table, a bidirectional threaded rod is threadedly connected through the two movable frames, the bidirectional threaded rod is rotatably connected to the welding table, and the bidirectional threaded rod passes through one end of the welding table and is fixedly connected to a driving motor.

[0011] As a further solution of the present invention: sliding columns are symmetrically penetrated and slidably connected on the center plate, a clamping plate is fixedly connected between the ends of the sliding columns on the same side close to the center plate, a cross plate is fixedly connected between the ends of the sliding columns on the same side away from the center plate, a second spring is symmetrically fixedly connected between the cross plate and the center plate, the second springs are sleeved on the outer surface of the sliding columns, and a groove is opened on the side of the center plate close to the clamping plate, and the groove is adapted to the clamping plate.

[0012] As a further solution of the present invention: a lifting column is symmetrically and slidably connected to the upper end surface of the center plate, a connecting plate is fixedly connected between the upper ends of the two lifting columns, a lower pressure plate is fixedly connected between the lower ends of the two lifting columns, the lower pressure plate is vertically slidably connected to the side wall of the center plate, a first spring is symmetrically and fixedly connected between the connecting plate and the upper end surface of the center plate, the first springs are all sleeved on the outer surface of the lifting column, and the initial state of the first spring is a stretched state.

[0013] As a further solution of the present invention: the lower end surface of the connecting plate is fitted with a limiting plate, the limiting plate is horizontally slidably connected to the upper end surface of the center plate, one side of the upper end surface of the limiting plate is an inclined surface, the limiting plate is fixedly connected to a connecting frame on the side close to the horizontal plate, and the connecting frame is fixedly connected to the upper end surface of the horizontal plate away from the limiting plate.

[0014] As a further solution of the present invention: the flip limiting mechanism includes symmetrically arranged rack plates, the rack plates are horizontally slidably connected to the side walls of the side plates, the upper end surfaces of the rack plates are meshedly connected with fan gears, and the fan gears are fixedly connected to the outer surface of the rotating shaft.

[0015] As a further solution of the present invention: a linkage frame is fixedly connected between the lower end surfaces of the two rack plates, a fixed plate is fixedly connected to the side wall of the linkage frame, a handle is arranged above the fixed plate, and the fixed plate and the linkage frame are both attached to the surface of the workbench.

[0016] As a further solution of the present invention: the upper end surface of the workbench is provided with two clamping holes below the fixed plate, a clamping column is slidably connected through the fixed plate, the handle is fixedly connected to the upper end of the clamping column, and the clamping column and the clamping hole are clamped with each other.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a double-sided soldering device for a computer PCB, which has the following beneficial effects:

[0019] 1. The flexible clamping and flipping mechanism for the circuit board can automatically drive the lower pressure plate to descend and press on the edge of the upper end surface of the circuit board during the process of clamping the circuit board from both sides, so as to facilitate the subsequent direct flipping of the circuit board. The staff can weld the other side of the circuit board through the through groove under the circuit board, which not only saves the step of manually flipping the circuit board after welding one side, but also directly flips the entire welding table (including the fixed circuit board) so that the staff can quickly weld the other side of the circuit board, reducing the complexity of operation, saving time, and improving welding efficiency. Moreover, the automatic flipping avoids damage to the welded components or solder joints on the circuit board due to improper operation or excessive force during the manual flipping process, ensures the stability of the welding quality, and reduces the scrapping of circuit boards due to operational errors. In addition, during the flipping process, the circuit board is stably clamped in the device, reducing direct contact with external objects, thereby reducing the risk of scratches or contamination.

[0020] 2. By setting the first spring and the second spring, the rebound force of the first spring and the second spring can be converted into a clamping force on the circuit board after the clamping plate and the centering plate contact the circuit board. The flexible clamping method of the spring is not only gentler than the rigid clamping method, but also can reduce the pressure concentration points on the surface of the circuit board, reduce the risk of scratches or crushing of the circuit board due to excessive clamping force, and protect the components and solder joints on the surface of the circuit board. Moreover, the elastic force of the spring has a certain adjustable range and can adapt to circuit boards of different thicknesses and sizes. When the clamping plate and the centering plate contact circuit boards of different thicknesses, the spring will automatically adjust the clamping force according to the actual thickness of the circuit board, thereby ensuring that the circuit board is firmly clamped.

[0021] 3. By setting up the flip limit mechanism, during the process of flipping the circuit board, the rack plates on both sides can be driven to move the fan gear to drive the circuit board to flip. This can not only ensure that the circuit board is subjected to uniform force during the flipping process, maintain the stability of the circuit board during the flipping process, and reduce welding quality problems caused by vibration or shaking, but also by driving both sides at the same time, the flipping angle and position of the circuit board can be more accurately controlled, ensuring that the circuit board can be accurately aligned with the welding position after flipping, reducing welding errors caused by position deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0025] Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged structure of the middle B area;

[0026] Figure 4 This is a schematic diagram of the center plate connection structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection structure between the welding table and the workbench of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle C area;

[0029] Figure 7 This is a schematic diagram of the connection structure between the fixing plate and the workbench of the present invention;

[0030] Figure 8 It is a schematic diagram of the connection structure between the rack plate and the side plate of the present invention.

[0031] In the figure: 1. workbench; 2. support frame; 3. welding gun; 4. side panel;

[0032] 501, welding table; 502, rotating shaft; 503, centering plate; 504, moving frame; 505, bidirectional threaded rod; 506, clamping plate; 507, sliding column; 508, groove; 509, lower pressure plate; 510, lifting column; 511, connecting plate; 512, first spring; 513, limiting plate; 514, connecting frame; 515, horizontal plate; 516, second spring; 517, connecting column; 518, through groove;

[0033] 601, linkage frame; 602, fixing plate; 603, handle; 604, rack plate; 605, sector gear; 606, clamping column; 607, clamping hole. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] A double-sided soldering device for a computer PCB according to this embodiment is as follows: Figure 1 - Figure 8 As shown, it includes a workbench 1, the upper end surface of the workbench 1 is fixedly connected to a support frame 2, a welding gun 3 is clamped through the support frame 2, the upper end surface of the workbench 1 is symmetrically fixedly connected to a side panel 4, a flexible clamping and flipping mechanism for a circuit board is arranged between the side panels 4, the flexible clamping and flipping mechanism for the circuit board includes a welding table 501, the welding table 501 is fixedly connected to a rotating shaft 502 on one side close to the side panel 4, the rotating shaft 502 is rotatably connected to the side wall of the side panel 4, a through groove 518 is opened at the center of the welding table 501, and the flexible clamping and flipping mechanism for the circuit board is used to drive the circuit board to perform stable flipping.

[0036] In this embodiment, Figure 1 and Figure 4As shown, the upper end surface of the welding table 501 is symmetrically slidably connected with the center plate 503, the lower end surface of the center plate 503 is fixedly connected with a connecting column 517, the lower end of the connecting column 517 is fixedly connected with a moving frame 504, the moving frames 504 are horizontally slidably connected to the side wall of the welding table 501, and a two-way threaded rod 505 is threadedly connected through the two moving frames 504, the two-way threaded rod 505 is rotatably connected to the welding table 501, and the two-way threaded rod 505 passes through one end of the welding table 501 and is fixedly connected to a driving motor. When the driving motor drives the two-way threaded rod 505 to rotate, the moving frame 504 and the connecting column 517 threadedly connected through the outer surface of the two-way threaded rod 505 can drive the center plate 503 to slide closer to or away from each other on the welding table 501.

[0037] In this embodiment, Figure 2 and Figure 3 As shown, sliding columns 507 are symmetrically penetrated and slidably connected on the center plate 503, a clamping plate 506 is fixedly connected between the sliding columns 507 on the same side close to the end of the center plate 503, and a cross plate 515 is fixedly connected between the sliding columns 507 on the same side away from the end of the center plate 503, and a second spring 516 is symmetrically fixedly connected between the cross plate 515 and the center plate 503, and the second spring 516 is sleeved on the outer surface of the sliding column 507, and a groove 508 is opened on the side of the center plate 503 close to the clamping plate 506, and the groove 508 is adapted to the clamping plate 506. When the center plate 503 is close to the circuit board, the clamping plate 506 will preferentially contact the side wall of the circuit board, and be hindered by the circuit board, and can slide toward the center plate 503 until it slides into the groove 508.

[0038] In this embodiment, Figure 2 As shown, a lifting column 510 is symmetrically and slidably connected to the upper end surface of the centering plate 503, a connecting plate 511 is fixedly connected between the upper ends of the two lifting columns 510, a lower pressure plate 509 is fixedly connected between the lower ends of the two lifting columns 510, and the lower pressure plate 509 is vertically slidably connected to the side wall of the centering plate 503, and a first spring 512 is symmetrically and fixedly connected between the connecting plate 511 and the upper end surface of the centering plate 503, and the first springs 512 are all sleeved on the outer surface of the lifting column 510. The initial state of the first spring 512 is a stretched state. When the limit of the connecting plate 511 is released, the rebound force of the first spring 512 can pull the connecting plate 511 and the lifting column 510 to automatically descend, and push the lower pressure plate 509 to press the edge of the surface of the circuit board below.

[0039] In this embodiment, Figure 3As shown, the lower end surface of the connecting plate 511 is fitted with a limiting plate 513, and the limiting plate 513 is horizontally slidably connected to the upper end surface of the center plate 503. One side of the upper end surface of the limiting plate 513 is an inclined surface. The limiting plate 513 is fixedly connected to a connecting frame 514 on the side close to the transverse plate 515, and the connecting frame 514 is fixedly connected to the upper end surface of the transverse plate 515 on the side away from the limiting plate 513. When the limiting plate 513 slides away from the connecting plate 511 on the upper end surface of the center plate 503, the connecting plate 511 will be pulled by the first spring 512 and automatically descend.

[0040] In the prior art, since the existing auxiliary device is fixed by clamping the side wall of the circuit board, after the staff completes the single-sided welding of the circuit board, it is necessary to manually turn the circuit board over so that the staff can weld the other side of the circuit board. This not only increases the complexity of the operation, but also requires the staff to readjust the clamping angle and welding position of the circuit board, reducing the welding work efficiency. Moreover, when manually flipping the circuit board, if the operation is improper or the force is too large, the welded components or solder joints on the circuit board will be damaged, resulting in a decrease in welding quality or even the scrapping of the circuit board. At the same time, the contact between the circuit board and the auxiliary device or other objects during the flipping process will also cause scratches or contamination. Compared with the prior art, in the process of clamping the circuit board from both sides, the lower pressure plate 509 can be automatically driven to descend and press on the edge of the upper end surface of the circuit board to facilitate subsequent By directly flipping the circuit board, the staff can weld the other side of the circuit board through the through groove 518 under the circuit board, which not only saves the staff from manually flipping the circuit board after welding one side, but also directly flips the entire welding table 501 (including the fixed circuit board), so that the staff can quickly weld the other side of the circuit board, reducing the complexity of operation, saving time, and improving welding efficiency. In addition, the automatic flipping avoids damage to the welded components or solder joints on the circuit board due to improper operation or excessive force during the manual flipping process, ensuring the stability of the welding quality and reducing the scrapping of circuit boards due to operational errors. In addition, during the flipping process, the circuit board is stably clamped in the device, reducing direct contact with external objects, thereby reducing the risk of scratches or contamination.

[0041] In other aspects, this embodiment also provides a flip limit mechanism for increasing the stability of the rotating shaft 502 during and after flipping, such as Figure 1 , Figure 5 - Figure 8 As shown, the flip limit mechanism includes symmetrically arranged rack plates 604, which are horizontally slidably connected to the side walls of the side plates 4, and the upper end surfaces of the rack plates 604 are meshedly connected with fan gears 605, which are fixedly connected to the outer surface of the rotating shaft 502.

[0042] In this embodiment, Figure 5 and Figure 6 As shown, a linkage frame 601 is fixedly connected between the lower end surfaces of the two rack plates 604, a fixed plate 602 is fixedly connected to the side wall of the linkage frame 601, a handle 603 is provided above the fixed plate 602, and the fixed plate 602 and the linkage frame 601 are both attached to the surface of the workbench 1. When the fixed plate 602 is pushed to drive the linkage frame 601 to move, the rack plates 604 on both sides can be driven to slide at the same time.

[0043] In this embodiment, Figure 7 As shown, two clamping holes 607 are provided on the upper end surface of the workbench 1 below the fixed plate 602, a clamping column 606 is slidably connected through the fixed plate 602, the handle 603 is fixedly connected to the upper end of the clamping column 606, the clamping column 606 and the clamping hole 607 are clamped together, and the fixed plate 602 can be fixed by clamping the clamping column 606 and the clamping hole 607 together.

[0044] Compared with the prior art, during the process of flipping the circuit board, the rack plates 604 on both sides can be driven to move the fan gear 605 to drive the circuit board to flip. This can not only ensure that the circuit board is subjected to uniform force during the flipping process and maintain the stability of the circuit board during the flipping process, and reduce welding quality problems caused by vibration or shaking, but also by driving both sides at the same time, the flipping angle and position of the circuit board can be more accurately controlled, ensuring that the circuit board can be accurately aligned with the welding position after flipping, thereby reducing welding errors caused by position deviations.

[0045] The working process and principle involved in the overall content of the above embodiment are as follows:

[0046] When the staff needs to solder the surface of the circuit board, they first place the circuit board on the upper end surface of the welding table 501, and then turn on the drive motor to drive the bidirectional threaded rod 505 to rotate on the side wall of the welding table 501. Since the threads on the surface of the bidirectional threaded rod 505 are in opposite directions, and the movable frame 504 is threadedly connected to the bidirectional threaded rod 505, during the rotation of the bidirectional threaded rod 505, the movable frames 504 on both sides can be driven to slide horizontally on the side walls of the welding table 501 synchronously and approach each other. As the movable frames 504 move, the connecting columns 517 connected to the movable frames 504 can pull the center plate 503 to slide synchronously on the welding table 501 and approach the circuit board. When the centering plate 503 is about to fit against the side wall of the circuit board, the clamping plate 506 on the side of the centering plate 503 close to the circuit board will first contact the side wall of the circuit board, and as the centering plate 503 continues to move, the clamping plate 506 will be affected by the obstruction of the circuit board and slide toward the centering plate 503, driving the sliding column 507 connected to the side wall of the clamping plate 506 to move synchronously on the centering plate 503, pushing the sliding column 507 away from the horizontal plate 515 connected to one side of the clamping plate 506 to horizontally move the centering plate 503, and pulling the second spring 516 between the horizontal plate 515 and the centering plate 503 until the clamping plate 506 is pushed into the groove 508 opened on the side wall of the centering plate 503;

[0047] When the support plate 506 is moved horizontally and slides into the groove 508, the support plate 506 will push the cross plate 515 to move the same distance through the sliding column 507. At this time, since the upper end surface of the cross plate 515 is connected to the connecting frame 514, the connecting frame 514 is connected to the side wall of the limit plate 513 away from the cross plate 515. Therefore, during the movement of the cross plate 515, the limit plate 513 will be pulled by the connecting plate 511 to move synchronously on the upper end surface of the center plate 503, so that the limit plate 513 is slowly separated from the connecting plate 511. At this time, the connecting plate 511 will be subjected to the rebound force of the first spring 512 (the initial state of the first spring 512 is in a stretched state), pulling the connecting plate 511 to slide downward along the inclined surface of the limit plate 513, pushing the lifting column 510 to slide into the center plate 503, and driving the lower pressure plate 509 connected to the side wall of the center plate 503 to vertically descend and press on the side wall of the circuit board. The circuit board is pressed down and fixed from the top, so that the circuit board can be directly flipped over later. The staff can weld the other side of the circuit board through the through groove 518 under the circuit board, which not only saves the step of manually flipping the circuit board after welding one side, but also directly flips the entire welding table 501 (including the fixed circuit board), so that the staff can quickly weld the other side of the circuit board, reducing the complexity of operation, saving time, and improving welding efficiency. In addition, the automatic flipping avoids damage to the welded components or welding points on the circuit board due to improper operation or excessive force during the manual flipping process, ensuring the stability of the welding quality and reducing the scrapping of the circuit board due to operational errors. In addition, during the flipping process, the circuit board is stably clamped in the device, reducing direct contact with external objects, thereby reducing the risk of scratches or contamination.

[0048] At the same time, when the clamping plate 506 and the lower pressing plate 509 are in contact with the circuit board, the rebound force of the first spring 512 and the second spring 516 is converted into a clamping force on the circuit board. Compared with the rigid clamping, the flexible clamping method of the spring is not only gentler, but also can reduce the pressure concentration point on the surface of the circuit board, reduce the risk of scratching or crushing the circuit board due to excessive clamping force, and protect the components and solder joints on the surface of the circuit board. In addition, the elastic force of the spring has a certain adjustable range and can adapt to circuit boards of different thicknesses and sizes. When the clamping plate 506 and the centering plate 503 are in contact with circuit boards of different thicknesses, the spring will automatically adjust the clamping force according to the actual thickness of the circuit board, thereby ensuring that the circuit board is firmly clamped.

[0049] When the staff has completed the single-sided welding of the circuit board, the handle 603 can be lifted up, driving the clamping column 606 to rise synchronously on the fixed plate 602 and slide out from one of the clamping holes 607 opened on the surface of the workbench 1. When the clamping column 606 and the clamping hole 607 are separated, the staff can push the handle 603 horizontally, and move the fixed plate 602 through the clamping column 606, driving the linkage frame 601 connected to the side wall of the fixed plate 602 to move synchronously. At this time, with the movement of the linkage frame 601, the rack plate 604 connected to both sides of the upper end surface of the linkage frame 601 will be pulled to slide horizontally on the side walls of the side plate 4 synchronously. Since the rack plate 604 is meshed with the fan gear 605, and the fan gear The wheel 605 is connected to the rotating shaft 502, so when the rack plate 604 is horizontally moved and fixed, the rotating shafts 502 on both sides are simultaneously driven to rotate through the fan gear 605, driving the welding table 501 connected between the rotating shafts 502 to rotate synchronously, so that the circuit board fixed on the surface of the welding table 501 is turned over, which can not only ensure that the circuit board is subjected to uniform force during the turning process, maintain the stability of the circuit board during the turning process, and reduce the welding quality problems caused by vibration or shaking, but also by driving both sides at the same time, the turning angle and position of the circuit board can be more accurately controlled, ensuring that the circuit board can be accurately aligned with the welding position after turning over, and reducing the welding error caused by position deviation;

[0050] After the circuit board is flipped, the staff can press down the handle 603 to push the clamping column 606 to slide into the fixed plate 602, and at the same time make the clamping column 606 clamp into another clamping hole 607 to limit the position of the fixed plate 602, so that the angle of the welding table 501 and the circuit board after flipping can be fixed, which further improves the stability of the circuit board after flipping, simplifies the fixing steps after the circuit board is flipped, and improves work efficiency. After the flipping angle of the welding table 501 and the circuit board is fixed, the staff can weld the other side of the circuit board through the through groove 518 opened on the welding table 501.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A double-sided soldering device for a computer PCB, comprising a workbench (1), the upper end surface of the workbench (1) being fixedly connected to a support frame (2), the support frame (2) being penetrated and clamped with a soldering gun (3), characterized in that: The upper end surface of the workbench (1) is symmetrically and fixedly connected with a side plate (4); A circuit board flexible clamping and flipping mechanism is provided between the side plates (4), the circuit board flexible clamping and flipping mechanism comprises a welding platform (501), a rotating shaft (502) is fixedly connected to the side of the welding platform (501) close to the side plate (4), the rotating shaft (502) is rotatably connected to the side wall of the side plate (4), a through groove (518) is provided at the center of the welding platform (501), and the circuit board flexible clamping and flipping mechanism is used to drive the circuit board to perform stable flipping; A flipping limiting mechanism is arranged between the rotating shafts (502), and the flipping limiting mechanism is used to increase the stability of the rotating shafts (502) during and after flipping.

2. A double-sided soldering device for a computer PCB according to claim 1, characterized in that: The upper end surface of the welding platform (501) is symmetrically slidably connected with a center plate (503), the lower end surface of the center plate (503) is fixedly connected with a connecting column (517), the lower end of the connecting column (517) is fixedly connected with a moving frame (504), the moving frames (504) are horizontally slidably connected to the side wall of the welding platform (501), a bidirectional threaded rod (505) is threadedly connected between the two moving frames (504), the bidirectional threaded rod (505) is rotatably connected to the welding platform (501), and one end of the bidirectional threaded rod (505) that passes through the welding platform (501) is fixedly connected to a driving motor.

3. A double-sided soldering device for a computer PCB according to claim 2, characterized in that: The center plate (503) is symmetrically penetrated by sliding posts (507) for sliding connection, and the sliding posts (507) on the same side are fixedly connected with a clamping plate (506) at one end close to the center plate (503), and the sliding posts (507) on the same side are fixedly connected with one end away from the center plate (503). A second spring (516) is symmetrically fixedly connected between the cross plate (515) and the center plate (503), and the second spring (516) is sleeved on the outer surface of the sliding post (507). A groove (508) is opened on the side of the center plate (503) close to the clamping plate (506), and the groove (508) is adapted to the clamping plate (506).

4. A double-sided soldering device for a computer PCB according to claim 3, characterized in that: The upper end surface of the center plate (503) is symmetrically and slidably connected with a lifting column (510), a connecting plate (511) is fixedly connected between the upper ends of the two lifting columns (510), a lower pressure plate (509) is fixedly connected between the lower ends of the two lifting columns (510), and the lower pressure plate (509) is vertically slidably connected to the side wall of the center plate (503), and a first spring (512) is symmetrically and fixedly connected between the connecting plate (511) and the upper end surface of the center plate (503), and the first spring (512) is sleeved on the outer surface of the lifting column (510), and the initial state of the first spring (512) is a stretched state.

5. A double-sided soldering device for a computer PCB according to claim 4, characterized in that: The lower end surface of the connecting plate (511) is fitted with a limiting plate (513), the limiting plate (513) is horizontally slidably connected to the upper end surface of the center plate (503), one side of the upper end surface of the limiting plate (513) is an inclined surface, the side of the limiting plate (513) close to the transverse plate (515) is fixedly connected to a connecting frame (514), and the side of the connecting frame (514) away from the limiting plate (513) is fixedly connected to the upper end surface of the transverse plate (515).

6. A double-sided soldering device for a computer PCB according to claim 1, characterized in that: The flip limit mechanism comprises symmetrically arranged rack plates (604), each of which is horizontally slidably connected to the side wall of the side plate (4), and each of which is meshingly connected to a sector gear (605) on the upper end surface of the rack plate (604), and each of which is fixedly connected to the outer surface of the rotating shaft (502).

7. A double-sided soldering device for a computer PCB according to claim 6, characterized in that: A linkage frame (601) is fixedly connected between the lower end surfaces of the two rack plates (604), a fixed plate (602) is fixedly connected to the side wall of the linkage frame (601), a handle (603) is arranged above the fixed plate (602), and the fixed plate (602) and the linkage frame (601) are both attached to the surface of the workbench (1).

8. A double-sided soldering device for a computer PCB according to claim 7, characterized in that: The upper end surface of the workbench (1) is provided with two clamping holes (607) below the fixed plate (602); a clamping column (606) is slidably connected through the fixed plate (602); the handle (603) is fixedly connected to the upper end of the clamping column (606); and the clamping column (606) and the clamping hole (607) are clamped to each other.

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