A printed circuit board soldering jig

Abstract

The utility model provides a kind of printed circuit board welding jig, including device base, circuit board fixed side plate and circuit board lower pressing plate, the upper surface both sides of device base are respectively fixedly connected with stand one and stand two, circuit board bearing frame plate is equipped between the top end of stand one and stand two, connection groove one and connection groove two are respectively set up on stand one and stand two. To the side edge and top side of circuit board are carried out, respectively through linkage assembly one and linkage assembly two when jacking plate rises, circuit board fixed side plate and circuit board lower pressing plate are driven away from circuit board, to release the fixation to the side edge and top side of circuit board, the synchronous movement of linkage assembly one and two, ensure that the limit of circuit board fixed side plate to the side edge of circuit board, the pressing of circuit board lower pressing plate to the top side of circuit board is formed in the same time constraint, avoid the position deviation of circuit board caused by action difference when traditional first side then top or first top then side, facilitate subsequent welding work.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board processing equipment, and in particular to a printed circuit board soldering fixture. Background Technology

[0002] As the electronics industry moves towards miniaturization, high density, and high integration, printed circuit boards (PCBs) are becoming increasingly diverse in size and specifications, with more densely packed surface components. This places higher demands on the performance of soldering fixtures. They must not only meet the requirements of high-precision fixing to accommodate component soldering needs, but also ensure efficient and safe unloading to connect with subsequent testing and assembly processes, ensuring smooth production line operation. Among these processes, unfixing, as a crucial final step in fixture functionality, directly impacts PCB yield and production line efficiency, making it a key technical aspect that urgently needs optimization in current fixture design.

[0003] In existing fixtures, the side stops and top pressure plates are controlled by independent drive units: the side stops are typically adjusted manually by knobs, driven by individual cylinders, or driven by micro motors; the top pressure plates rely on another set of independent pneumatic push rods, manual levers, or electric modules. There is no mechanical linkage structure or synchronous control logic between the two. When releasing the fixation, the operator needs to perform two steps: first, by using buttons, knobs, or manual adjustment, the side stops are opened outward to release the lateral constraint of the printed circuit board; then, the drive unit of the top pressure plate is operated to lift it upward to release the longitudinal pressure of the printed circuit board. For simple fixtures with low automation, it may even be necessary to manually adjust the side stops on both sides one by one, and then operate the top pressure plate separately. The operation process is cumbersome and prone to delays in action connection.

[0004] Therefore, it is necessary to provide a new printed circuit board soldering fixture to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a printed circuit board soldering fixture.

[0006] This utility model provides a printed circuit board (PCB) soldering fixture, comprising a device base, a PCB fixing side plate, and a PCB lower pressure plate. A first upright plate and a second upright plate are fixedly connected to both sides of the upper surface of the device base. A PCB support frame is provided between the top ends of the first upright plate and the second upright plate. Connecting grooves 1 and 2 are respectively formed on the first upright plate and the second upright plate. Connecting groove 1 is formed between one end of the first upright plate and the PCB support frame, and connecting groove 2 is formed between the second upright plate and the other end of the PCB support frame. Four guide rods are provided at the four corners between the device base and the PCB support frame. A lifting plate is slidably connected to the outer surface of the four guide rods. A linkage component 1 is provided between the lifting plate and the first upright plate, and a linkage component 2 is provided between the lifting plate and the second upright plate. A lifting component for driving the lifting plate to rise and fall is provided at the top of the device base. When the lifting plate rises, the linkage components 1 and 2 respectively drive the PCB fixing side plate and the PCB lower pressure plate closer to the PCB. When the lifting plate rises, the linkage components 1 and 2 respectively drive the PCB fixing side plate and the PCB lower pressure plate away from the PCB.

[0007] Preferably, the lifting assembly includes a telescopic electric cylinder and a lifting shaft. The telescopic electric cylinder is fixedly connected to the center of the upper surface of the device base. The output end of the telescopic electric cylinder is connected to one end of the lifting shaft, and the other end of the lifting shaft is fixedly connected to the lifting plate.

[0008] Preferably, the linkage component one includes two hinged bases one, a connecting shaft one, a fixed side plate one, a return spring, a receiving semicircular plate, and a linkage rod one. The two hinged bases one are located on both sides of the bottom wall of the connecting groove one, and a connecting shaft one is provided between the two hinged bases one. The outer surface of the connecting shaft one is rotatably fitted with the bend of the fixed side plate one. The fixed side plate one is L-shaped. A return spring is provided between the upper surface of the horizontal end of the fixed side plate one and the circuit board bearing frame plate. A receiving semicircular plate is provided on the lower surface of the horizontal end of the fixed side plate one. The receiving semicircular plate cooperates with one side of the lifting plate. The vertical end of the fixed side plate one is slidably fitted with the linkage rod one. One end of the linkage rod one is provided with the circuit board fixed side plate. An auxiliary component one is provided on the linkage rod one.

[0009] Preferably, the auxiliary component one includes a spring pad one and a spring one. The outer surface of the linkage rod one away from the fixed side plate of the circuit board is fitted with the spring pad one, and the outer surface of the linkage rod one near the fixed side plate of the circuit board is fitted with the spring one. The spring one is located between the fixed side plate of the circuit board and the fixed side plate one.

[0010] Preferably, the linkage component one includes two hinged bases two, a connecting shaft two, a fixed side plate two, a limiting rod and a linkage rod two. A limiting rod is provided between the two walls of the connecting groove two. The two hinged bases two are located on both sides of the top of the lifting plate away from the top of the upright plate one. A connecting shaft two is provided between the two hinged bases two. One end of the fixed side plate two is rotatably sleeved on the outer surface of the connecting shaft two. The other end of the fixed side plate two is slidably sleeved on the linkage rod two. The bottom end of the linkage rod two is fixedly connected to the lower pressure plate of the circuit board. A guide groove is provided at the bend of the fixed side plate two. The limiting rod is slidably connected inside the guide groove. An auxiliary component two is provided on the linkage rod two.

[0011] Preferably, the auxiliary component two includes a spring pad two and a spring two. The outer surface of the linkage rod two away from the lower pressure plate of the circuit board is fitted with the spring pad two, and the outer surface of the linkage rod two near the lower pressure plate of the circuit board is fitted with the spring two. The spring two is located between the lower pressure plate of the circuit board and the fixed side plate two.

[0012] Compared with related technologies, the printed circuit board soldering fixture provided by this utility model has the following beneficial effects: When the lifting plate rises, the circuit board fixing side plate and the circuit board lower pressure plate move closer to the circuit board via linkage component one and linkage component two, respectively, to fix the side and top of the circuit board. When the lifting plate rises, the circuit board fixing side plate and the circuit board lower pressure plate move away from the circuit board via linkage component one and linkage component two, respectively, to release the fixation of the side and top of the circuit board. The synchronous movement of linkage component one and two ensures that the circuit board fixing side plate limits the side of the circuit board and the circuit board lower pressure plate presses the top of the circuit board at the same time, avoiding the circuit board position displacement caused by the time difference of the action in the traditional side-first and then top or top-first and then side-first, which facilitates the subsequent soldering work. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of a printed circuit board soldering fixture provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the linkage component one. Figure 3 for Figure 1 The diagram shows the structure of auxiliary component one.

[0014] Figure 4 for Figure 1 The schematic diagram of the linkage component two shown. Figure 5 for Figure 1 The schematic diagram of auxiliary component two shown below The diagram is labeled as follows: 1. Device base; 101. Guide rod; 102. Telescopic electric cylinder; 103. Lifting shaft; 2. Vertical plate one; 201. Connecting groove one; 202. Hinge base one; 203. Connecting shaft one; 204. Fixed side plate one; 205. Return spring; 206. Supporting semi-circular plate; 3. Vertical plate two; 301. Connecting groove two; 302. Limiting rod; 4. Circuit board bearing frame plate; 5. Lifting plate; 501. Hinge base two; 502. Connecting shaft two; 6. Linkage rod one; 601. Spring pad one; 602. Spring one; 603. Circuit board fixed side plate; 7. Fixed side plate two; 701. Guide groove; 8. Linkage rod two; 801. Spring pad two; 802. Spring two; 803. Circuit board lower pressure plate. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Please refer to the following: Figure 1-5 ,in, Figure 1 A schematic diagram of a preferred embodiment of a printed circuit board soldering fixture provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the linkage component one. Figure 3 for Figure 1 The diagram shows the structure of auxiliary component one. Figure 4 for Figure 1 The diagram shows the structure of the second linkage component. Figure 5 for Figure 1 The diagram shows the structure of auxiliary component two.

[0017] In the specific implementation process, such as Figure 1-5As shown, the device includes a base 1, a circuit board fixing side plate 603, and a circuit board lower pressure plate 803. A first upright plate 2 and a second upright plate 3 are fixedly connected to both sides of the upper surface of the base 1. A circuit board support frame plate 4 is provided between the top ends of the first upright plate 2 and the second upright plate 3. Connecting grooves 1 201 and 2 301 are respectively provided on the first upright plate 2 and the second upright plate 3. A connecting groove 1 201 is provided between one end of the first upright plate 2 and the circuit board support frame plate 4, and a connecting groove 2 301 is provided between the second upright plate 3 and the other end of the circuit board support frame plate 4. Four guide rods 101 are provided at the four corners between the base 1 and the circuit board support frame plate 4. A lifting plate 5 is slidably connected to the outer surface of the four guide rods 101. A linkage assembly is provided between the lifting plate 5 and the first upright plate 2. First, a linkage component 2 is provided between the lifting plate 5 and the upright plate 3. The top of the device base 1 is provided with a lifting component for driving the lifting plate 5 to rise and fall. When the lifting plate 5 rises, the circuit board fixing side plate 603 and the circuit board lower pressure plate 803 are driven to move closer to the circuit board through the linkage component 1 and the linkage component 2 respectively. When the lifting plate 5 rises, the circuit board fixing side plate 603 and the circuit board lower pressure plate 803 are driven away from the circuit board through the linkage component 1 and the linkage component 2 respectively. The lifting component includes a telescopic electric cylinder 102 and a lifting shaft 103. The telescopic electric cylinder 102 is fixedly connected to the center of the upper surface of the device base 1. The output end of the telescopic electric cylinder 102 is connected to one end of the lifting shaft 103. The other end of the lifting shaft 103 is fixedly connected to the lifting plate 5.

[0018] In the specific implementation process, such as Figure 2-3 As shown, the linkage assembly includes two hinged bases 202, a connecting shaft 203, a fixed side plate 204, a return spring 205, a receiving semicircular plate 206, and a linkage rod 6. The two hinged bases 202 are located on both sides of the bottom wall of the connecting groove 201. The connecting shaft 203 is located between the two hinged bases 202. The outer surface of the connecting shaft 203 is rotatably fitted onto the bend of the fixed side plate 204. The fixed side plate 204 is L-shaped. A return spring 205 is located between the upper surface of the horizontal end of the fixed side plate 204 and the circuit board support frame plate 4. A return spring 205 is located on the lower surface of the horizontal end of the fixed side plate 204. The receiving semicircular plate 206 is matched with one side of the lifting plate 5. The vertical end of the fixed side plate 204 is slidably fitted with the linkage rod 6. One end of the linkage rod 6 is provided with the circuit board fixing side plate 603. The linkage rod 6 is provided with the auxiliary component 1, which includes the spring pad 601 and the spring 602. The outer surface of the linkage rod 6 away from the circuit board fixing side plate 603 is fitted with the spring pad 601, and the outer surface of the linkage rod 6 near the circuit board fixing side plate 603 is fitted with the spring 602. The spring 602 is located between the circuit board fixing side plate 603 and the fixed side plate 204.

[0019] When the circuit board fixing side plate 603 moves closer to the side of the printed circuit board, the elastic buffer of spring 602 avoids the rigid fixing from squeezing and damaging the side of the printed circuit board, effectively protecting the board body and side components.

[0020] In the specific implementation process, such as Figure 4-5 As shown, the linkage assembly includes two hinged bases 501, a connecting shaft 502, a fixed side plate 7, a limiting rod 302, and a linkage rod 8. A limiting rod 302 is provided between the two walls of the connecting groove 301. The two hinged bases 501 are located on both sides of the lifting plate 5 away from the top of the vertical plate 2. A connecting shaft 502 is provided between the two hinged bases 501. One end of the fixed side plate 7 is rotatably sleeved on the outer surface of the connecting shaft 502, and the linkage rod 8 is slidably sleeved on the other end of the fixed side plate 7. The bottom end of the linkage rod 8 is fixedly connected to an electric motor. The circuit board lower pressure plate 803 has a guide groove 701 at the bend of the fixed side plate 7. The guide groove 701 is slidably connected to the limiting rod 302. The linkage rod 8 is provided with an auxiliary component 2, which includes a spring pad 801 and a spring 802. The outer surface of the linkage rod 8 away from the circuit board lower pressure plate 803 is fitted with a spring pad 801, and the outer surface of the linkage rod 8 near the circuit board lower pressure plate 803 is fitted with a spring 802. The spring 802 is located between the circuit board lower pressure plate 803 and the fixed side plate 7.

[0021] During the pressing process of the pressure plate 803, the spring 802 dissipates the rigid pressure through elastic buffering, avoiding direct squeezing of the solder joints and surface mount components on the top side of the printed circuit board, while preventing the pressure from being transmitted to the side and causing board deformation or component detachment, thus protecting the integrity of the board structure and components in all aspects.

[0022] The working principle of this utility model is as follows: The printed circuit board is placed above the circuit board support frame 4. The telescopic electric cylinder 102 is activated to drive the lifting shaft 103, pushing the lifting plate 5 upwards along the four guide rods 101, simultaneously producing the following steps: Step 1: When the lifting plate 5 rises, it pushes the receiving semi-circular plate 206 and the fixed side plate 204 to rotate away from the circuit board support frame plate 4 around the connecting shaft 203. Then, the fixed side plate 204 simultaneously squeezes the reset spring 205, thereby the fixed side plate 204 drives the circuit board fixed side plate 603 away from the side of the printed circuit board through the linkage rod 6, so as to release the fixation of the side of the printed circuit board. The above operation is performed in reverse. The reset spring 205 pushes the fixed side plate 204 to reset. Then, the fixed side plate 204 drives the circuit board fixed side plate 603 to fix the side of the printed circuit board through the linkage rod 6.

[0023] Step 2: When the lifting plate 5 rises, it drives the fixed side plate 7 to rise through the two hinged bases 501. The auxiliary guide between the guide groove 701 and the limit rod 302 causes the fixed side plate 7 to rise to the bend and rotate away from the circuit board support frame plate 4. Then, the fixed side plate 7 drives the circuit board pressure plate 803 away from the top side of the printed circuit board through the linkage rod 8, so as to release the fixation on the top side of the printed circuit board. The above operation is performed in reverse. The fixed side plate 7 drives the circuit board pressure plate 803 to fix the top side of the printed circuit board through the linkage rod 8.

[0024] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A printed circuit board soldering fixture, characterized in that, The device includes a base (1), a circuit board fixing side plate (603), and a circuit board lower pressure plate (803). A first upright plate (2) and a second upright plate (3) are fixedly connected to both sides of the upper surface of the base (1). A circuit board support frame plate (4) is provided between the top ends of the first upright plate (2) and the second upright plate (3). A first connecting groove (201) and a second connecting groove (301) are respectively provided on the first upright plate (2) and the second upright plate (3). A first connecting groove (201) is provided between one end of the first upright plate (2) and the circuit board support frame plate (4). A connecting groove 2 (301) is provided between the second (3) and the other end of the circuit board support frame (4). Four guide rods (101) are provided at the four corners between the device base (1) and the circuit board support frame (4). The outer surface of the four guide rods (101) is slidably connected to the lifting plate (5). A linkage component 1 is provided between the lifting plate (5) and the first upright plate (2). A linkage component 2 is provided between the lifting plate (5) and the second upright plate (3). A lifting component is provided at the top of the device base (1) for driving the lifting plate (5) to rise and fall. When the lifting plate (5) rises, the circuit board fixing side plate (603) and the circuit board lower pressure plate (803) are driven to approach the circuit board through the linkage component one and the linkage component two respectively. When the lifting plate (5) rises, the circuit board fixing side plate (603) and the circuit board lower pressure plate (803) are driven to move away from the circuit board through the linkage component one and the linkage component two respectively.

2. The printed circuit board soldering fixture according to claim 1, characterized in that, The lifting assembly includes a telescopic electric cylinder (102) and a lifting shaft (103). The telescopic electric cylinder (102) is fixedly connected to the center of the upper surface of the device base (1). The output end of the telescopic electric cylinder (102) is connected to one end of the lifting shaft (103), and the other end of the lifting shaft (103) is fixedly connected to the lifting plate (5).

3. A printed circuit board soldering fixture according to claim 2, characterized in that, The linkage component includes two hinged bases (202), a connecting shaft (203), a fixed side plate (204), a return spring (205), a receiving semicircular plate (206), and a linkage rod (6). The two hinged bases (202) are located on both sides of the bottom wall of the connecting groove (201). The connecting shaft (203) is located between the two hinged bases (202). The outer surface of the connecting shaft (203) is rotatably fitted with the bend of the fixed side plate (204). The shape is L-shaped. A reset spring (205) is provided between the upper surface of the horizontal end of the fixed side plate (204) and the circuit board support frame plate (4). A receiving semi-circular plate (206) is provided on the lower surface of the horizontal end of the fixed side plate (204). The receiving semi-circular plate (206) cooperates with one side of the lifting plate (5). A linkage rod (6) is slidably sleeved on the vertical end of the fixed side plate (204). A circuit board fixed side plate (603) is provided at one end of the linkage rod (6). An auxiliary component is provided on the linkage rod (6).

4. A printed circuit board soldering fixture according to claim 3, characterized in that, The auxiliary component includes a spring pad (601) and a spring (602). The outer surface of the linkage rod (6) away from the circuit board fixing side plate (603) is fitted with the spring pad (601), and the outer surface of the linkage rod (6) near the circuit board fixing side plate (603) is fitted with the spring (602). The spring (602) is located between the circuit board fixing side plate (603) and the fixing side plate (204).

5. A printed circuit board soldering fixture according to claim 4, characterized in that, The linkage component includes two hinged bases (501), a connecting shaft (502), a fixed side plate (7), a limiting rod (302), and a linkage rod (8). A limiting rod (302) is provided between the two walls of the connecting groove (301). The two hinged bases (501) are located on both sides of the top of the lifting plate (5) away from the top of the upright plate (2). A connecting shaft (502) is provided between the two hinged bases (501). One end of the fixed side plate (7) is rotatably sleeved on the outer surface of the connecting shaft (502). The other end of the fixed side plate (7) is slidably sleeved on the linkage rod (8). The bottom end of the linkage rod (8) is fixedly connected to the lower pressure plate (803) of the circuit board. A guide groove (701) is provided at the bend of the fixed side plate (7). The limiting rod (302) is slidably connected inside the guide groove (701). An auxiliary component (2) is provided on the linkage rod (8).

6. A printed circuit board soldering fixture according to claim 5, characterized in that, The auxiliary component two includes a spring pad two (801) and a spring two (802). The outer surface of the linkage rod two (8) away from the circuit board lower pressure plate (803) is fitted with the spring pad two (801), and the outer surface of the linkage rod two (8) near the circuit board lower pressure plate (803) is fitted with the spring two (802). The spring two (802) is located between the circuit board lower pressure plate (803) and the fixed side plate two (7).

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