Combined multifunctional fixing device for manual soldering of printed boards

Abstract

The utility model discloses a combined multifunctional fixing device for printed board manual welding, including fixed platform, the inside both ends of fixed platform are equipped with the cavity groove, and one rotatable bidirectional screw rod is equipped in each cavity groove, and the both ends of each bidirectional screw rod are respectively connected through screw thread with two screw cylinders, and the one end of two screw cylinders on each bidirectional screw rod is respectively rotatably connected with the one end of two connecting rods, and the other end of two connecting rods is rotatably connected with the top block, and the top end of top block extends to the outside of fixed platform and is fixedly connected with fixed plate, and the top of fixed platform is equipped with the slide way matched with top block, and the one end of each bidirectional screw rod is connected with the drive motor of driving bidirectional screw rod rotation. The utility model can flexibly adjust the size, so as to be applicable to different size printed board.

Description

Technical Field

[0001] This utility model relates to a combined multifunctional fixing device for manual soldering of printed circuit boards, belonging to the field of manual soldering technology for printed circuit boards. Background Technology

[0002] In electronics, chips are a way to miniaturize circuits (mainly semiconductor devices, but also passive components). When they are used for manufacturing, printed circuit boards (PCBs) often require manual soldering. To ensure the stability of PCBs during manual soldering, specialized soldering and fixing devices are needed to fix them in place.

[0003] Currently, existing manual soldering fixtures for printed circuit boards (PCBs) often use simple clamps or brackets to hold the PCB in place. These fixtures are relatively simple in structure and function, and offer limited clamping effectiveness. This makes the PCBs prone to movement, resulting in poor stability. Furthermore, they require highly skilled operators, and even slight lapses in attention can affect soldering accuracy. Additionally, it is difficult to maintain a consistent size for PCBs of different dimensions.

[0004] Therefore, it is necessary to invent a welding and fixing device that can flexibly adjust the size and facilitate the fixing of printed circuit boards. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: how to make the size of the printed circuit board manual soldering fixing device flexible and easy to fix the printed circuit board.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is to provide a combined multifunctional fixing device for manual soldering of printed circuit boards. The device is characterized by including a fixing platform, with symmetrically arranged cavities at both ends of the platform. Each cavity contains a rotatable bidirectional screw. Both ends of each bidirectional screw are threadedly connected to two threaded cylinders. One end of each of the two threaded cylinders on each bidirectional screw is rotatably connected to one end of two connecting rods. The other ends of both connecting rods are rotatably connected to a top block. The top of the top block extends beyond the fixing platform and is fixedly connected to a fixing plate. The top of the fixing platform has a slide rail that matches the top block. One end of each bidirectional screw is connected to a drive motor that drives the bidirectional screw to rotate.

[0007] Preferably, each of the fixed plates has a movable positioning plate on its inner side, and multiple liftable pressure columns are provided on the inner side of the fixed plate near the upper part of the positioning plate. A positioning rod is telescopically connected to the bottom end of each pressure column, and a transmission mechanism is provided between the pressure column and the positioning plate. The transmission mechanism includes multiple first springs arranged in an array between the positioning plate and the fixed plate. Multiple guide grooves and guide holes are provided on the side wall of the fixed plate. The guide holes are located below the guide grooves, and guide columns pass through the guide holes. One end of the guide column is fixedly connected to the positioning plate. A connecting column that can move up and down in the guide groove passes through the guide groove. Each guide groove has a guide column. Each guide column is fixedly connected to the upper and lower ends of the guide groove on the fixed plate. A through hole is provided on the connecting column, and the guide column is inserted into the through hole. One end of the connecting column is fixedly connected to the pressure column, and the other end of the connecting column and the other end of the guide column are respectively rotatably connected to both ends of the support plate.

[0008] Preferably, the pressure column has a storage cavity inside, and the top end of the storage cavity is fixedly connected to one end of the second spring. The top end of the positioning rod is located inside the storage cavity and connected to the other end of the second spring.

[0009] Preferably, the bottom end of the positioning rod is provided with a rubber head.

[0010] Preferably, each end of the fixed platform is provided with at least two mounting plates, and each mounting plate is provided with mounting holes.

[0011] Compared with the prior art, the present invention has at least one of the following beneficial effects and advantages:

[0012] 1. By symmetrically setting cavities, threaded cylinders, connecting rods and slides at both ends of the fixed platform, the two fixed plates can be brought close together to clamp the printed circuit board, and the size can be flexibly adjusted to suit printed circuit boards of different sizes;

[0013] 2. Positioning rods and positioning plates are set on the inner side of the fixed plate. With the cooperation of the transmission mechanism such as the first spring, guide post and connecting post, the positioning rods can be pressed against the top side of the printed circuit board while the positioning plate abuts against the side wall of the printed circuit board, thus effectively fastening the printed circuit board. Conversely, it can be quickly released. The operation is simple and convenient, which greatly ensures the accuracy of chip soldering.

[0014] 3. By setting a rubber head, the pressure damage to the printed circuit board by the positioning rod can be greatly reduced. In addition, with the cooperation of the storage cavity and the second spring, the positioning rod can always press down on the printed circuit board after the positioning plate is clamped and positioned, thereby further reinforcing the printed circuit board and greatly improving its stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a combined multi-functional fixing device for manual soldering of printed circuit boards.

[0016] Figure 2 This is a partial sectional view of the fixed platform;

[0017] Figure 3 This is a schematic diagram of the connection between the fixing plate and the positioning plate.

[0018] Figure 4 This is a sectional view of the compression column and the connecting column.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Fixed platform; 2. Slide rail; 3. Fixed plate; 4. Support plate; 5. Top block; 6. Drive motor; 7. Positioning rod; 8. Pressure column; 9. Connecting column; 10. First spring; 11. Positioning plate; 12. Bidirectional screw; 13. Connecting rod; 14. Cavity groove; 15. Threaded cylinder; 16. Guide groove; 17. Guide hole; 18. Guide column; 19. Rubber head; 20. Storage cavity; 21. Second spring; 22. Guide column. Detailed Implementation

[0021] To make this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0022] This utility model provides a combined multi-functional fixing device for manual soldering of printed circuit boards, such as... Figures 1-4 It includes a fixed platform 1, with symmetrically arranged cavities 14 at both ends inside the fixed platform 1. A rotatable bidirectional screw 12 is installed in the cavity 14 near the end of the fixed platform 1. Threaded cylinders 15 are symmetrically arranged at both ends of the bidirectional screw 12. The bidirectional screw 12 and the threaded cylinders 15 are connected by threads. One end of each threaded cylinder 15 is hinged to a connecting rod 13, and the other end of each connecting rod 13 is hinged to a top block 5. The top end of the top block 5 extends outside the fixed platform 1 and is fixed with a fixed plate 3. The top end of the fixed platform 1 is provided with a slide 2 that matches the top block 5, and the top block 5 can slide in the slide 2. A drive motor 6 is symmetrically arranged at both ends on one side of the fixed platform 1, and the output end of the drive motor 6 extends into the cavity 14 and is connected to one end of the bidirectional screw 12.

[0023] In this embodiment, the length direction of the slide 2 is the shortest distance direction between the two ends of the fixed platform 1. One end of the bidirectional screw 12 is limited and disposed in a slot located on one side of the cavity 14 within the fixed platform 1, ensuring that it can rotate freely. The other end passes through one side of the fixed platform 1 and is connected to the output end of the drive motor 6. The outer side of the threaded cylinder 15 has a rectangular structure and is slidably disposed at the bottom of the cavity 14. The rotation of the bidirectional screw 12 drives the threaded cylinder 15 to move. Since the outer wall of the threaded cylinder 15 has a rectangular structure, it cannot rotate on its own and can only slide along the length direction of the bidirectional screw 12.

[0024] The outer wall of the bidirectional screw 12 is symmetrically provided with two helical threads in opposite directions, and each threaded cylinder 15 is screwed onto the corresponding helical thread on the bidirectional screw 12. Based on this, by rotating the bidirectional screw 12, the two threaded cylinders 15 on it can be driven to move towards or away from each other.

[0025] Mounting plates are provided at both ends of the fixed platform 1 (in this embodiment, mounting plates are provided at all four corners of the fixed platform 1), and the side walls of the mounting plates are provided with through mounting holes. Based on this, the mounting plates facilitate the installation and fixing of the device of the utility model.

[0026] The inner sides of the two fixed plates 3 (the opposite sides of the two fixed plates 3) are provided with movable positioning plates 11, and the inner side of the fixed plate 3 near the upper part of the positioning plate 11 is provided with multiple liftable pressure columns 8. The bottom end of the pressure column 8 is telescopically connected to the positioning rod 7, and a transmission mechanism is provided between the pressure column 8 and the positioning plate 11.

[0027] The transmission mechanism includes multiple first springs 10 arranged in an array between the positioning plate 11 and the fixed plate 3. The side wall of the fixed plate 3 has multiple guide grooves 16 and guide holes 17 facing the positioning rod 7. The guide holes 17 are located below the guide grooves 16, and guide posts 18 pass through the guide holes 17. One end of the guide post 18 is fixedly connected to the positioning plate 11. A connecting post 9 passes through the guide grooves 16 and can move up and down within the guide grooves 16. One end of the connecting post 9 is fixedly connected to the pressure post 8, and the other end of the connecting post 9 is rotatably connected to the other end of the guide post 18 by a support plate 4. Each guide groove 16 has a guide post 22, and each guide post 22 is fixedly connected to the upper and lower ends of the guide groove 16 on the fixed plate 3. The connecting post 9 has a through hole, and the guide post 22 is inserted into the through hole.

[0028] In another embodiment, in order to better enable the connecting post 9 to slide on the guide post 22, a sliding bearing is installed in the through hole of the connecting post 9 to reduce the sliding friction of the connecting post 9 on the guide post 22.

[0029] In the initial state, the positioning plate 11 is located inside the pressure column 8 and the positioning rod 7 (i.e., on the opposite side of the two fixing plates 3); when the positioning plate 11 overcomes the elastic force of the first spring 10 to the position closest to the fixing plate 3 (i.e., when it presses against the printed circuit board), the pressure column 8 and the positioning rod 7 are located inside the positioning plate 11, that is, there is no positioning plate 11 directly below the pressure column 8 and the positioning rod 7.

[0030] The usage process of this utility model is as follows:

[0031] In use, the printed circuit board can be placed on the fixed platform 1, and then the drive motor 6 drives the bidirectional screw 12 to rotate, so that the bidirectional screw 12 drives the two threaded cylinders 15 to move closer to each other, so that the hinge end between the threaded cylinder 15 and the connecting rod 13 rotates, and the hinge end between the connecting rod 13 and the top block 5 rotates, so that the connecting rod 13 pushes the top block 5 to move along the slide 2, and then the top block 5 drives the fixed plate 3 to move together, so that the two fixed plates 3 move closer together and clamp the printed circuit board.

[0032] Furthermore, through the positioning plate 11 provided inside the fixed plate 3, when the fixed plate 3 approaches the printed circuit board, the positioning plate 11 can first contact the printed circuit board and compress the first spring 10 with the fixed plate 3. At the same time, by pushing the fixed plate 3 and the positioning plate 11 pre-abutting against the printed circuit board, the positioning plate 11 pushes the guide post 18, causing the guide post 18 to move outward (in the opposite direction of the two fixed plates 3) within the guide hole 17, causing the support plate 4 connected to one end of the guide post 18 to rotate. Then, the support plate 4 can pull the connecting post 9 in... The guide groove 16 slides downwards, and then the connecting column 9 drives the pressure column 8 to move, causing the pressure column 8 to drive the positioning rod 7 to descend. This allows the positioning rod 7 to press against the top side of the printed circuit board while the positioning plate 11 abuts against the side wall of the printed circuit board, thus effectively securing the printed circuit board. Conversely, when the fixing plate 3 drives the positioning plate 11 away from the printed circuit board, the pressure column 8 can drive the positioning rod 7 to rise under the rebound of the first spring 10, quickly releasing the printed circuit board. The operation is simple and convenient, greatly ensuring the accuracy of chip soldering.

[0033] Example 2

[0034] In this embodiment, the pressure column 8 has a receiving cavity 20 inside. The top end of the receiving cavity 20 is fixedly connected to one end of the second spring 21. The top end of the positioning rod 7 extends into the receiving cavity 20 and is fixedly connected to the other end of the second spring 21. That is, when there is no force, part of the positioning rod 7 is located inside the receiving cavity 20 and part is located outside the receiving cavity 20. The bottom end of the positioning rod 7 is provided with a rubber head 19.

[0035] As can be seen from the above, the elasticity of the rubber head 19 can greatly reduce pressure damage. When the positioning rod 7 contacts the printed circuit board, the positioning rod 7 can continue to move upward and enter the receiving cavity 20, and squeeze the second spring 21, causing the second spring 21 to contract and store force. Under the action of this structure, when the positioning plate 11 clamps the printed circuit board, the positioning rod 7 can always press the printed circuit board downward, thereby further reinforcing the printed circuit board and greatly improving stability.

[0036] Everything else is the same as in Example 1.

Claims

1. A combined multi-functional fixing device for manual soldering of printed circuit boards, characterized in that, The system includes a fixed platform (1), which has symmetrically arranged cavities (14) at both ends. Each cavity (14) contains a rotatable bidirectional screw (12). Both ends of each bidirectional screw (12) are connected to two threaded cylinders (15) by threads. One end of each threaded cylinder (15) on each bidirectional screw (12) is rotatably connected to one end of each connecting rod (13). The other end of each connecting rod (13) is rotatably connected to a top block (5). The top end of the top block (5) extends to the outside of the fixed platform (1) and is fixedly connected to a fixed plate (3). The top end of the fixed platform (1) is provided with a slide (2) that matches the top block (5). One end of each bidirectional screw (12) is connected to a drive motor (6) that drives the bidirectional screw (12) to rotate.

2. The combined multi-functional fixing device for manual soldering of printed circuit boards as described in claim 1, characterized in that, Each of the aforementioned fixed plates (3) has a movable positioning plate (11) on its inner side. Multiple liftable pressure columns (8) are located on the inner side of the fixed plate (3) near the upper part of the positioning plate (11). A positioning rod (7) is telescopically connected to the bottom end of each pressure column (8), and a transmission mechanism is provided between the pressure column (8) and the positioning plate (11). The transmission mechanism includes multiple first springs (10) arranged in an array between the positioning plate (11) and the fixed plate (3). Multiple guide grooves (16) and guide holes (17) are provided on the side wall of the fixed plate (3). The guide holes (17) are located below the guide grooves (16). 17) A guide post (18) runs through the interior. One end of the guide post (18) is fixedly connected to the positioning plate (11). A connecting post (9) that can move up and down in the guide groove (16) runs through the guide groove (16). Each guide groove (16) is provided with a guide post (22). Each guide post (22) is fixedly connected to the upper and lower ends of the guide groove (16) on the fixing plate (3). A through hole is provided on the connecting post (9). The guide post (22) is inserted into the through hole. One end of the connecting post (9) is fixedly connected to the pressure post (8). The other end of the connecting post (9) and the other end of the guide post (18) are respectively rotatably connected to both ends of the support plate (4).

3. A combined multi-functional fixing device for manual soldering of printed circuit boards as described in claim 2, characterized in that, The pressure column (8) has a storage cavity (20) inside. The top end of the storage cavity (20) is fixedly connected to one end of the second spring (21), and the top end of the positioning rod (7) is located in the storage cavity (20) and connected to the other end of the second spring (21).

4. A combined multi-functional fixing device for manual soldering of printed circuit boards as described in claim 3, characterized in that, The bottom end of the positioning rod (7) is provided with a rubber head (19).

5. A combined multi-functional fixing device for manual soldering of printed circuit boards as described in claim 1, characterized in that, The fixed platform (1) is provided with at least two mounting plates at both ends, and each mounting plate is provided with mounting holes.

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