A circuit board positioning and clamping device

Abstract

This utility model relates to a circuit board positioning and clamping device, including a base frame. A rectangular groove is formed on the top of the base frame, and a fixed clamping plate is fixedly installed on the left side of the rectangular groove. Two sliders are slidably installed inside the base frame, and internal thread blocks are fixedly installed on the top of each slider. A drive mechanism is provided on the top of the base frame to drive the two internal thread blocks to move. A connecting rod is rotatably installed on the left side of each of the two internal thread blocks. When the circuit board is placed in the rectangular groove and contacts the right side of the fixed clamping plate, the internal thread blocks are driven to move closer together. The connecting rods push a push plate and a movable plate towards the fixed clamping plate, squeezing the circuit board. The movable plate moves to the right under a reverse force, and the back protrusion squeezes the pressure sensor. The signal is transmitted to the controller, which stops the drive mechanism, thus firmly clamping the circuit board and effectively preventing damage from excessive squeezing.

Description

Technical Field

[0001] This utility model relates to the field of circuit board positioning technology, specifically a circuit board positioning and clamping device. Background Technology

[0002] In many fields such as electronic manufacturing, circuit board repair, and related scientific research experiments, circuit board positioning and clamping devices are indispensable key equipment. Their core function is to firmly fix the circuit board and ensure that it can maintain a precise position and stable posture during subsequent processing, testing, welding, debugging and other operations, thereby ensuring the accuracy and reliability of various operations and improving production efficiency and product quality.

[0003] Traditional circuit board clamping devices typically rely on operators manually rotating screws or wrenches to move clamping plates through threaded transmission or lever principles, thereby clamping and releasing the circuit board. This clamping method depends entirely on the operator's experience and feel, making it difficult to ensure consistent clamping force each time and lacking precise control over the clamping force. When operators make operational errors, the clamping plates may apply excessive clamping force to the circuit board, leading to serious consequences such as circuit board deformation, substrate cracking, copper foil circuit breakage, and damage to electronic components. Therefore, a circuit board positioning and clamping device is proposed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a circuit board positioning and clamping device to overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A circuit board positioning and clamping device includes a base frame. A rectangular slot is formed on the top of the base frame. A fixing plate is fixedly installed on the left side of the rectangular slot. Two sliders are slidably installed inside the base frame. An internal thread block is fixedly installed on the top of each of the two sliders. A driving mechanism for moving the two internal thread blocks is provided on the top of the base frame. A connecting rod is rotatably installed on the left side of each of the two internal thread blocks. A push plate is rotatably installed on the left side of each of the two connecting rods. Four support rods extending through to the left side of the push plate are slidably installed on the right side of the push plate. A movable plate is fixedly installed on the left side of the four support rods. A pressure control structure is provided on the right side of the movable plate.

[0007] The pressure control structure includes a protrusion fixedly installed on the back of the movable plate, a pressure sensor corresponding to the protrusion fixedly installed inside the push plate, a controller fixedly installed on the top of the base frame, and the pressure sensor and the controller being electrically connected. The controller is used to control the start and stop of the drive mechanism.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the drive mechanism includes two support blocks fixedly installed on the top of the base frame, a bidirectional lead screw rotatably installed between the two support blocks, two internal threaded blocks threadedly installed on the outside of the two bidirectional lead screws, a motor fixedly installed on the surface of the support blocks, and the output end of the motor fixedly connected to the front of the bidirectional lead screw.

[0010] Furthermore, the controller and the motor are electrically connected.

[0011] Furthermore, four return springs are provided between the movable plate and the push plate, and the four return springs are slidably installed on the outside of the four support rods.

[0012] Furthermore, a plurality of electric push rods are fixedly installed at the bottom of the base frame, extending into the rectangular groove, and rectangular plates are fixedly installed at the telescopic ends of the plurality of electric push rods.

[0013] Furthermore, the bottom of the rectangular plate is flush with the bottom of the rectangular groove, and the bottom area of ​​the rectangular plate is smaller than the area of ​​the rectangular groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the circuit board is placed in the rectangular groove and contacts the right side of the fixed clamping plate. The internal thread blocks are driven to move closer to each other. The connecting rod pushes the push plate and the movable plate to move closer to the fixed clamping plate to squeeze the circuit board. The movable plate moves to the right under the reverse force. The back protrusion squeezes the pressure sensor. The signal is transmitted to the controller. The controller controls the drive mechanism to stop. The circuit board is firmly clamped, thereby effectively preventing excessive squeezing and damage to the circuit board. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the circuit board positioning and clamping device of this utility model;

[0016] Figure 2 This is a top view of the circuit board positioning and clamping device of this utility model;

[0017] Figure 3 This is a partial cross-sectional view of the circuit board positioning and clamping device of this utility model.

[0018] Figure 4 This is a schematic diagram of the base frame structure;

[0019] Figure 5 This is a schematic diagram of the push plate cross-section;

[0020] Figure 6 for Figure 1 Enlarged structural diagram at point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Base frame; 2. Rectangular groove; 3. Fixed clamping plate; 4. Slider; 5. Internal threaded block; 6. Connecting rod; 7. Push plate; 8. Support rod; 9. Movable plate; 10. Protrusion; 11. Pressure sensor; 12. Controller; 13. Support block; 14. Bidirectional lead screw; 15. Motor; 16. Return spring; 17. Electric push rod; 18. Rectangular plate. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] Example 1, as Figures 1-6 As shown, a circuit board positioning and clamping device includes a base frame 1. A rectangular groove 2 is provided on the top of the base frame 1. A fixing clamping plate 3 is fixedly installed on the left side of the rectangular groove 2. Two sliders 4 are slidably installed inside the base frame 1. An internal thread block 5 is fixedly installed on the top of each slider 4. A driving mechanism for driving the two internal thread blocks 5 to move is provided on the top of the base frame 1. A connecting rod 6 is rotatably installed on the left side of each of the two internal thread blocks 5. A push plate 7 is rotatably installed on the left side of each of the two connecting rods 6. Four support rods 8 are slidably installed on the right side of the push plate 7, extending through to its left side. A movable plate 9 is fixedly installed on the left side of the four support rods 8. A pressure control structure is provided on the right side of the movable plate 9.

[0025] Specifically, the pressure control structure includes a protrusion 10 fixedly installed on the back of the movable plate 9, a pressure sensor 11 corresponding to the protrusion 10 fixedly installed inside the push plate 7, and a controller 12 fixedly installed on the top of the base frame 1. The pressure sensor 11 and the controller 12 are electrically connected, and the controller 12 is used to control the start and stop of the drive mechanism.

[0026] Two internal threaded blocks 5 are restrained at the top of the base frame 1 by two sliders 4, allowing them to slide. When the drive mechanism is running, it can drive the two internal threaded blocks 5 to move away from or towards each other. In use, the circuit board to be processed is placed inside the rectangular groove 2, and the circuit board is brought into contact with the right side of the fixed clamping plate 3. At this time, the two internal threaded blocks 5 are driven to move closer to each other. When they move closer to each other, the push plate 7 and the movable plate 9 are pushed towards the fixed clamping plate 3 by two connecting rods 6. Since the movable plate 9 is restrained in front of the push plate 7 by four support rods 8, and the movable plate 9 extends into the rectangular groove 2, when the push plate 7 and the movable plate 9 move towards the fixed clamping plate 3, the two internal threaded blocks 5 move closer to each other. When plate 3 approaches, it will squeeze the circuit board placed inside the rectangular groove 2. When the movable plate 9 is subjected to the reverse force of the circuit board, it will move to the right. The protrusion 10 installed on the back of the movable plate 9 will squeeze the pressure sensor 11. The pressure sensor 11 transmits the pressure signal to the controller 12 which is electrically connected to it. The controller 12 then controls the drive mechanism to stop running. At this time, the circuit board is firmly clamped, effectively preventing excessive compression from damaging the circuit board. Finally, the two internal threaded blocks 5 are driven to move away from each other, and the push plate 7 and the movable plate 9 are pulled to the right by the two connecting rods 6, releasing the restriction on the circuit board.

[0027] Example 2, as Figures 1-3 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:

[0028] The drive mechanism includes two support blocks 13 fixedly installed on the top of the base frame 1. A bidirectional lead screw 14 is rotatably installed between the two support blocks 13. Two internal threaded blocks 5 are threadedly installed on the outside of the two bidirectional lead screws 14. A motor 15 is fixedly installed on the surface of the support blocks 13. The output end of the motor 15 is fixedly connected to the front of the bidirectional lead screw 14.

[0029] With this configuration, the bidirectional lead screw 14 is supported on the top of the base frame 1 by two support blocks 13 and rotated. The bidirectional lead screw 14 is driven to rotate in both directions by the motor 15, which can cause the two internal thread blocks 5 to move closer and further apart.

[0030] Example 3, as Figures 1-3 As shown, this embodiment is a further improvement based on embodiment 2, and its specific details are as follows:

[0031] The controller 12 and the motor 15 are electrically connected.

[0032] With this configuration, the pressure sensor 11 transmits the pressure signal to the controller 12, which is electrically connected to it. After receiving the signal, the controller 12 can control the motor 15 to start and stop.

[0033] Example 4, as Figures 1-3 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:

[0034] Four return springs 16 are provided between the movable plate 9 and the push plate 7, and the four return springs 16 are slidably installed on the outside of the four support rods 8 respectively.

[0035] With this configuration, the four reset springs 16 can unfold and push the movable plate 9 to reset.

[0036] Example 5, as Figure 3 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:

[0037] Multiple electric push rods 17 are fixedly installed at the bottom of the base frame 1, extending into the rectangular groove 2. Rectangular plates 18 are fixedly installed at the telescopic ends of the multiple electric push rods 17.

[0038] With this configuration, the four electric push rods 17 unfold to push the rectangular plate 18 upward, and the rectangular plate 18 pushes the circuit board upward, thus facilitating the removal of the circuit board.

[0039] Example 6, as Figure 2 As shown, this embodiment is a further improvement based on embodiment 5, and its specific details are as follows:

[0040] The bottom of the rectangular plate 18 is flush with the bottom of the rectangular groove 2, and the bottom area of ​​the rectangular plate 18 is smaller than the area of ​​the rectangular groove 2.

[0041] This arrangement, with the bottom of the rectangular plate 18 flush with the bottom of the rectangular groove 2, facilitates work on the top of the circuit board and prevents damage caused by uneven pressure on the bottom of the circuit board.

[0042] Working principle:

[0043] In the equipment structure, two internal threaded blocks 5 are restricted to the top of the base frame 1 by two sliders 4, so that they can slide freely. At the same time, two support blocks 13 support the bidirectional screw 14 on the top of the base frame 1, so that it can rotate. The motor 15 drives the bidirectional screw 14 to rotate in both directions, thereby causing the two internal threaded blocks 5 to move closer or further away from each other.

[0044] In use, the circuit board to be processed is placed inside the rectangular groove 2 and the circuit board is brought into contact with the right side of the fixed clamping plate 3. At this time, the motor 15 drives the bidirectional lead screw 14 to rotate, which in turn drives the two internal thread blocks 5 to move closer to each other. When the two internal thread blocks 5 move closer to each other, they will push the push plate 7 and the movable plate 9 closer to the fixed clamping plate 3 through the two connecting rods 6. Since the movable plate 9 is restricted in front of the push plate 7 by the four support rods 8 and the movable plate 9 penetrates into the rectangular groove 2, when the push plate 7 and the movable plate 9 move closer to the fixed clamping plate 3, they will squeeze the circuit board placed inside the rectangular groove 2.

[0045] When the movable plate 9 is subjected to the reverse force of the circuit board, it will move to the right. The protrusion 10 installed on the back of the movable plate 9 will then squeeze the pressure sensor 11. The pressure sensor 11 transmits the pressure signal to the controller 12 which is electrically connected to it. After receiving the signal, the controller 12 controls the motor 15 to stop running. At this time, the circuit board is firmly clamped, effectively preventing excessive squeezing from damaging the circuit board.

[0046] When it is necessary to release the restriction on the circuit board, the drive motor 15 causes the bidirectional lead screw 14 to drive the two internal thread blocks 5 to move away from each other, and pulls the push plate 7 and the movable plate 9 to the right through the two connecting rods 6. At the same time, the four reset springs 16 unfold to push the movable plate 9 to reset.

[0047] To remove the circuit board, four electric push rods 17 unfold to push the rectangular plate 18 upward, and the rectangular plate 18 then pushes the circuit board upward, thus facilitating the removal of the circuit board.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A circuit board positioning and clamping device, comprising a base frame (1), characterized in that: The top of the base frame (1) is provided with a rectangular groove (2), and a fixed clamping plate (3) is fixedly installed on the left side of the rectangular groove (2). Two sliders (4) are slidably installed inside the base frame (1). An internal thread block (5) is fixedly installed on the top of each of the two sliders (4). A driving mechanism for driving the two internal thread blocks (5) to move is provided on the top of the base frame (1). A connecting rod (6) is rotatably installed on the left side of each of the two internal thread blocks (5). A push plate (7) is rotatably installed on the left side of each of the two connecting rods (6). Four support rods (8) that penetrate to the left side of the push plate (7) are slidably installed on the right side of the push plate (7). A movable plate (9) is fixedly installed on the left side of the four support rods (8). A pressure control structure is provided on the right side of the movable plate (9). The pressure control structure includes a protrusion (10) fixedly installed on the back of the movable plate (9), a pressure sensor (11) corresponding to the protrusion (10) is fixedly installed inside the push plate (7), and a controller (12) is fixedly installed on the top of the base frame (1). The pressure sensor (11) and the controller (12) are electrically connected. The controller (12) is used to control the start and stop of the drive mechanism.

2. The circuit board positioning and clamping device according to claim 1, characterized in that: The drive mechanism includes two support blocks (13) fixedly installed on the top of the base frame (1), a bidirectional lead screw (14) is rotatably installed between the two support blocks (13), and two internal thread blocks (5) are threadedly installed on the outside of the two bidirectional lead screws (14). A motor (15) is fixedly installed on the surface of the support block (13), and the output end of the motor (15) is fixedly connected to the front of the bidirectional lead screw (14).

3. The circuit board positioning and clamping device according to claim 2, characterized in that: The controller (12) and the motor (15) are electrically connected.

4. The circuit board positioning and clamping device according to claim 1, characterized in that: Four return springs (16) are provided between the movable plate (9) and the push plate (7), and the four return springs (16) are slidably installed on the outside of the four support rods (8).

5. The circuit board positioning and clamping device according to claim 1, characterized in that: The bottom of the base frame (1) is fixedly installed with multiple electric push rods (17) that penetrate into the rectangular groove (2), and the telescopic ends of the multiple electric push rods (17) are fixedly installed with rectangular plates (18).

6. The circuit board positioning and clamping device according to claim 5, characterized in that: The bottom of the rectangular plate (18) is flush with the bottom of the rectangular groove (2), and the bottom area of ​​the rectangular plate (18) is smaller than the area of ​​the rectangular groove (2).

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