A performance testing device for circuit boards

Abstract

This utility model discloses a performance testing device for circuit boards, relating to the field of circuit board testing technology. It includes a constant temperature oven with a testing mechanism inside, extending to the top of the oven. A pipe is located on one side of the oven. This circuit board performance testing device allows a lifting plate to move upwards by moving a handle upwards. The lifting plate is the same size as the inner wall of the top of the pipe, effectively blocking the inner wall of the pipe. When removing the circuit board, a support plate contacts a moving plate, and the bottom surface of the moving plate is concave, allowing the circuit board to enter the concave area. The downward movement of the moving plate and support plate blocks the directional cylinder, enabling the circuit board to be removed from the support plate. This prevents heat loss from the constant temperature oven during both placing and removing the circuit board, facilitating performance testing of the circuit board.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, specifically to a performance testing device for circuit boards. Background Technology

[0002] Circuit board names include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed circuit board (copper etching technology), etc.

[0003] According to patent application number CN202222168313.0, this utility model relates to a circuit board performance testing machine. The entire testing process is completed by automated mechanical equipment, eliminating the need for manual feeding and assistance. This improves the speed and quality of testing and reduces production costs, making it suitable for practical use. However, when placing the circuit board in the constant temperature oven and removing it, the oven needs to be opened, which causes heat loss and affects the temperature uniformity, making it inconvenient to test the circuit board's performance.

[0004] Further searching patent application number CN202320691347.X reveals a circuit board performance testing machine, relating to the technical field of circuit board testing equipment. The beneficial effects of this utility model are: the output shafts of four forward and reverse motors, controlled by the system, rotate to drive four gears. These gears, through meshing with corresponding racks, adjust the racks up and down. This adjustment is achieved by the base cover driving the support column and support cylinder in a sliding engagement. Controlling the base cover's up-and-down adjustment allows for easy adjustment of the circuit board performance testing machine body's working height, providing better working height adjustment functionality. Previously, placing and removing circuit boards in a constant-temperature oven required opening the oven, causing heat loss and affecting temperature uniformity, thus hindering circuit board performance testing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a performance testing device for circuit boards. The upward movement of the handle causes a lifting plate to move upwards. The size of the lifting plate is equal to the inner wall of the top of the pipe. During movement, it pushes the gas at the top of the pipe through the delivery pipe, preventing subsequent gas loss and blocking the inner wall of the top of the pipe. When removing the circuit board, the support plate contacts the moving plate, and the bottom surface of the moving plate is concave, allowing the circuit board to enter the concave area, reducing gas accumulation between the moving plate and the support plate. The downward movement of the moving plate and support plate blocks the directional cylinder, allowing the circuit board to be removed from the support plate. This prevents heat loss from the constant temperature oven during both placing and removing the circuit board, facilitating performance testing. It solves the problem that the constant temperature oven needs to be opened when placing and removing the circuit board, causing heat loss and affecting temperature uniformity, thus hindering performance testing.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a performance testing device for circuit boards, including a constant temperature oven, a testing mechanism is provided inside the constant temperature oven, the testing mechanism extends to the top of the constant temperature oven, a pipe is provided on one side of the constant temperature oven, the pipe is connected to the connection of the constant temperature oven, and a blocking plate is provided at the top of the pipe, the blocking plate is in contact with the pipe.

[0007] The testing mechanism includes a lifting plate, the top surface of which is horizontally collinear with the inner wall of the bottom end of the pipe. A push plate is provided at the top of one end of the lifting plate, and the push plate is in contact with the inner wall of the pipe and the lifting plate. A square cylinder is fixedly provided at one end of the pipe, and a support plate is provided inside the top of the square cylinder. A moving plate is provided above the support plate, and the moving plate is the same size as the support plate. A vertical rod is provided at the top of the moving plate, and the vertical rod is in close contact with the constant temperature oven. A conveying pipe is provided on one side of the vertical rod, one end of which extends into the interior of the constant temperature oven, and the other end of which is connected to the pipe. The bottom surface of the moving plate is concave.

[0008] Preferably, the inside of the pipe is provided with a groove, and the inside of the groove is provided with a threaded rod, which is threadedly connected to the push plate.

[0009] Preferably, a round rod is fixedly provided at one end of the threaded rod, a motor is provided at the end of the round rod away from the threaded rod, and a sealing plate is provided on the side of the motor close to the round rod.

[0010] Preferably, the round rod passes through the sealing plate and is in contact with the sealing plate, and the sealing plate is located on one side of the groove and is fixedly connected to the pipe.

[0011] Preferably, a handle is provided on one side of the constant temperature oven. The handle passes through the blocking plate and contacts both the pipe and the blocking plate. The bottom end of the handle is fixedly connected to the lifting plate.

[0012] Preferably, baffles are provided on both sides of the motion plate, and there are two baffles, which are fixedly connected to the pipe. A limiting rod is provided on the top of the support plate.

[0013] Preferably, the bottom end of the limiting rod is fixedly connected to the support plate, and the top end of the limiting rod penetrates the moving plate, and a guide rod is provided inside the pipe.

[0014] Preferably, a steel wire rope is fixedly installed on the top of the support plate, the steel wire rope extends to the outside of the constant temperature oven, and a sliding plate is installed at the bottom end of the steel wire rope.

[0015] Preferably, the sliding plate is slidably connected to the outer surface of the constant temperature oven, and a connecting spring is provided on the top of the sliding plate. Beneficial effects

[0016] This invention provides a performance testing device for circuit boards. Compared with the prior art, it has the following advantages: 1. This circuit board performance testing device uses an upward-moving handle to move a lifting plate upwards. The size of the lifting plate is equal to the inner wall of the top of the pipe. During the movement, it can push the gas at the top of the pipe through the delivery pipe to prevent subsequent gas loss and block the inner wall of the top of the pipe. When removing the circuit board, it allows the support plate to contact the moving plate. The bottom surface of the moving plate is concave, allowing the circuit board to enter the concave area, reducing the amount of gas between the moving plate and the support plate. The downward movement of the moving plate and the support plate blocks the directional cylinder, allowing the circuit board on the support plate to be removed. This prevents the loss of hot air in the constant temperature oven when placing and removing the circuit board, facilitating the performance testing of the circuit board.

[0017] 2. The circuit board is equipped with a performance testing device. When the circuit board is located between two baffles, it can prevent the circuit board from falling. The circuit board is in contact with the limiting rod to prevent excessive movement and ensure that the circuit board is located on the support plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the testing mechanism of this utility model; Figure 4 For the present utility model Figure 1 Enlarged view of part A in the image; Figure 5 This is a cross-sectional view of the pipe of this utility model.

[0019] In the diagram: 1. Constant temperature oven; 2. Testing mechanism; 201. Lifting plate; 202. Pushing plate; 203. Square cylinder; 204. Support plate; 205. Moving plate; 206. Vertical rod; 207. Conveying pipe; 208. Threaded rod; 209. Round rod; 210. Motor; 211. Sealing plate; 212. Handle; 213. Baffle; 214. Limiting rod; 215. Guide rod; 216. Wire rope; 217. Sliding plate; 3. Pipeline; 4. Blocking plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a performance testing device for circuit boards, including a constant temperature oven 1, a testing mechanism 2 is provided inside the constant temperature oven 1, the testing mechanism 2 extends to the top of the constant temperature oven 1, a pipe 3 is provided on one side of the constant temperature oven 1, the pipe 3 is connected to the connection of the constant temperature oven 1, and a blocking plate 4 is provided at the top of the pipe 3, the blocking plate 4 is in contact with the pipe 3.

[0022] The testing mechanism 2 includes a lifting plate 201. The top surface of the lifting plate 201 is horizontally collinear with the inner wall of the bottom end of the pipe 3. A push plate 202 is provided at the top of one end of the lifting plate 201. The push plate 202 is in contact with the inner wall of the pipe 3 and the lifting plate 201. A square cylinder 203 is fixedly provided at one end of the pipe 3. A support plate 204 is provided inside the top of the square cylinder 203. A moving plate 205 is provided above the support plate 204. The moving plate 205 is the same size as the support plate 204. A vertical rod 206 is provided at the top of the moving plate 205. The vertical rod 206 is in close contact with the constant temperature oven 1. A conveying pipe 207 is provided on one side of the vertical rod 206. One end of the conveying pipe 207 extends into the interior of the constant temperature oven 1, and the other end of the conveying pipe 207 is connected to the connection point of the pipe 3. The bottom surface of the moving plate 205 is concave.

[0023] The inside of the pipe 3 is provided with a groove, and a threaded rod 208 is provided inside the groove. The threaded rod 208 is threadedly connected to the push plate 202, so that the threaded rod 208 is located inside the groove, which obstructs the movement of the lifting plate 201 and the push plate 202, and the rotation of the threaded rod 208 can cause the push plate 202 to move.

[0024] A round rod 209 is fixedly installed at one end of the threaded rod 208. A motor 210 is installed at the end of the round rod 209 away from the threaded rod 208. A sealing plate 211 is installed on the side of the motor 210 close to the round rod 209. The round rod 209 passes through the sealing plate 211 and is in contact with the sealing plate 211. The sealing plate 211 is located on one side of the groove and is fixedly connected to the pipe 3. The rotation of the round rod 209 can cause the threaded rod 208 to rotate. The round rod 209 is rotated by the motor 210. The motor 210 can drive the round rod 209 and the threaded rod 208 to rotate together. The lifting plate 201 blocks the pipe 3 to prevent the loss of heat.

[0025] A handle 212 is provided on one side of the constant temperature oven 1. The handle 212 passes through the blocking plate 4 and is in contact with both the pipe 3 and the blocking plate 4. The bottom end of the handle 212 is fixedly connected to the lifting plate 201. The lifting plate 201 can be moved upward by moving the handle 212 upward. The size of the lifting plate 201 is equal to that of the inner wall of the top of the pipe 3, so that the lifting plate 201 can be moved to the inside of the top of the pipe 3 and come into contact with the inner wall of the top of the pipe 3, thus blocking the inner wall of the top of the pipe 3.

[0026] Two baffles 213 are provided on both sides of the motion plate 205, and the two baffles 213 are fixedly connected to the pipe 3. A limiting rod 214 is provided on the top of the support plate 204. The circuit board is located between the two baffles 213, which can prevent the circuit board from falling. The circuit board is in contact with the limiting rod 214, which can prevent excessive movement.

[0027] Please see Figure 2-3The bottom end of the limiting rod 214 is fixedly connected to the support plate 204, and the top end of the limiting rod 214 passes through the moving plate 205. A guide rod 215 is provided inside the pipe 3. A steel wire rope 216 is fixedly provided at the top of the support plate 204. The steel wire rope 216 extends to the outside of the constant temperature oven 1. A sliding plate 217 is provided at the bottom end of the steel wire rope 216. The sliding plate 217 is slidably connected to the outer surface of the constant temperature oven 1. A connecting spring is provided at the top of the sliding plate 217 to push the vertical rod 206 downward, which in turn pushes the moving plate 205 downward, allowing the moving plate 205 to move downward along the guide rod 215, and allowing the support plate 204 and the moving plate 205 to move downward together. 05 are in contact, and the bottom surface of the moving plate 205 is concave, which allows the circuit board to enter the concave. As the moving plate 205 continues to move downward, the support plate 204 moves downward and stretches the wire rope 216, causing the sliding plate 217 to move upward and compress the connecting spring. As the support plate 204 moves downward, the support plate 204 and the moving plate 205 move within the square tube 203. When the support plate 204 is exposed at the bottom of the square tube 203, the movement of the vertical rod 206 stops, and the support rod moves downward. The wire rope 216 is in contact with the moving plate 205, but this does not affect the movement of the wire rope 216.

[0028] During operation, the constant temperature oven 1 is used first to raise the temperature inside, facilitating subsequent heat resistance testing of the circuit board. Then, the handle 212 is moved upwards, simultaneously causing the lifting plate 201, which is fixedly connected to the handle 212, to move upwards as well. Because the size of the lifting plate 201 is equal to the inner wall of the top of the pipe 3, it can move to the inside of the top of the pipe 3 and contact the inner wall, effectively blocking it. Furthermore, as the lifting plate 201 moves upwards, the distance between it and the blocking plate 4 decreases. Through the continuous upward movement of the blocking plate 4, the gas between the lifting plate 201 and the blocking plate 4 is pushed, allowing the gas to flow through the delivery pipe 207 and into the constant temperature oven. In oven 1, the upward movement of the lifting plate 201 causes the upper blocking plate 4 to move upward simultaneously, exposing the blocking plate 4. The lifting plate 201, located inside the top of pipe 3, blocks the pipe 3, preventing heat loss. Further upward movement of the blocking plate 4 creates a distance between it and the lifting plate 201, allowing the circuit board to be placed on it. After placement, the lifting plate 201 re-enters the bottom of pipe 3. Then, the motor 210 drives the threaded rod 208 to rotate within a groove, which is then sealed by the sealing plate 211, reducing gas leakage in the constant temperature oven 1. Leakage occurs because the threaded rod 208 is threadedly connected to the push plate 202. Rotation of the threaded rod 208 causes the push plate 202 to move, pushing a circuit board on one side to move into the constant temperature oven 1. The circuit board is positioned on the support plate 204 and between the two baffles 213, allowing for heat resistance testing of the circuit board in the constant temperature oven 1. After the test, the vertical rod 206 is pushed downwards, causing the moving plate 205 to move downwards. This allows the moving plate 205 to move downwards along the guide rod 215, bringing the support plate 204 into contact with the moving plate 205. The bottom surface of the moving plate 205 is concave, allowing the circuit board to enter the concave area. The continued movement of the moving plate 205... The downward movement causes the support plate 204 to move downward, stretching the wire rope 216 and causing the sliding plate 217 to move upward, compressing the connecting spring. The downward movement of the support plate 204 also causes the support plate 204 and the moving plate 205 to move within the square cylinder 203. When the support plate 204 is exposed at the bottom of the square cylinder 203, the movement of the vertical rod 206 stops, and the support rod moves downward. This allows the moving plate 205 to block the directional cylinder, and the downward movement of the support rod stops the moving plate 205, allowing the circuit board on the support plate 204 to be removed. This prevents heat loss from the constant temperature oven 1 during both placing and removing the circuit board, facilitating performance testing of the circuit board.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A performance testing device for circuit boards, comprising a constant temperature oven (1), characterized in that: The constant temperature oven (1) is provided with a testing mechanism (2) inside. The testing mechanism (2) extends to the top of the constant temperature oven (1). A pipe (3) is provided on one side of the constant temperature oven (1). The pipe (3) is connected to the connection of the constant temperature oven (1). A blocking plate (4) is provided at the top of the pipe (3). The blocking plate (4) is in contact with the pipe (3). The testing mechanism (2) includes a lifting plate (201). The top surface of the lifting plate (201) is horizontally collinear with the inner wall of the bottom end of the pipe (3). A push plate (202) is provided at the top of one end of the lifting plate (201). The push plate (202) is in contact with the inner wall of the pipe (3) and the lifting plate (201) respectively. A square cylinder (203) is fixedly provided at one end of the pipe (3). A support plate (204) is provided inside the top of the square cylinder (203). A support plate (204) is provided above the support plate (204). A moving plate (205) is provided, the moving plate (205) being the same size as the support plate (204). A vertical rod (206) is provided on the top of the moving plate (205), the vertical rod (206) being in close contact with the constant temperature oven (1). A conveying pipe (207) is provided on one side of the vertical rod (206), one end of the conveying pipe (207) extending into the interior of the constant temperature oven (1), and the other end of the conveying pipe (207) being connected to the connection of the pipe (3). The bottom surface of the moving plate (205) is concave.

2. The performance testing device for circuit boards according to claim 1, characterized in that: The pipe (3) has a groove inside, and a threaded rod (208) is provided inside the groove. The threaded rod (208) is threadedly connected to the push plate (202).

3. The performance testing device for circuit boards according to claim 2, characterized in that: A round rod (209) is fixedly provided at one end of the threaded rod (208), and a motor (210) is provided at the end of the round rod (209) away from the threaded rod (208). A sealing plate (211) is provided on the side of the motor (210) close to the round rod (209).

4. The performance testing device for circuit boards according to claim 3, characterized in that: The round rod (209) passes through the sealing plate (211) and is in contact with the sealing plate (211). The sealing plate (211) is located on one side of the groove and is fixedly connected to the pipe (3).

5. The performance testing device for circuit boards according to claim 1, characterized in that: A handle (212) is provided on one side of the constant temperature oven (1). The handle (212) passes through the block plate (4) and is in contact with the pipe (3) and the block plate (4) respectively. The bottom end of the handle (212) is fixedly connected to the lifting plate (201).

6. The performance testing device for circuit boards according to claim 1, characterized in that: Both sides of the motion plate (205) are provided with baffles (213), there are two baffles (213), and the two baffles (213) are fixedly connected to the pipe (3). The top of the support plate (204) is provided with a limiting rod (214).

7. The performance testing device for circuit boards according to claim 6, characterized in that: The bottom end of the limiting rod (214) is fixedly connected to the support plate (204), and the top end of the limiting rod (214) passes through the moving plate (205). A guide rod (215) is provided inside the pipe (3).

8. The performance testing device for circuit boards according to claim 1, characterized in that: A steel wire rope (216) is fixedly installed on the top of the support plate (204), the steel wire rope (216) extends to the outside of the constant temperature oven (1), and a sliding plate (217) is installed at the bottom end of the steel wire rope (216).

9. A performance testing device for circuit boards according to claim 8, characterized in that: The sliding plate (217) is slidably connected to the outer surface of the constant temperature oven (1), and a connecting spring is provided on the top of the sliding plate (217).

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