A high-precision bending detection device for a circuit board

Abstract

The utility model discloses a high accuracy bending detection device of circuit board specifically related to electronic product detection technical field, including support frame, the vacuum adsorption conveying belt is installed to support frame inner wall, the support frame top fixedly connected with the box, the inside of box is provided with lifting assembly, the left end and right end of box all are provided with closing assembly, lifting assembly includes two rotating shafts, two rotating shafts front and back surface outer surface all are hinged with the box inner wall. The utility model discloses a high accuracy bending detection device of circuit board, by setting lifting assembly, specifically is first opening motor drives two rotating shafts counterclockwise rotation, and the rotating shaft rotation will push the mounting plate and move out the inside of box, so that the staff can in the larger outside space to the laser wheel profile sensor maintenance, can conveniently use the maintenance tool, and the maintenance time is greatly shortened, and the production line downtime length is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic product testing technology, and in particular to a high-precision bending detection device for circuit boards. Background Technology

[0002] In the wave of rapid development of the modern electronics industry, circuit boards, as the core basic component of various electronic devices, have been widely applied in many key fields such as consumer electronics, automotive electronics, aerospace, and industrial control. From smartphones and multifunctional tablets that people use every day, to automotive electronic control systems that ensure travel safety and comfort, and even to precision aerospace instruments that determine the accurate navigation and stable flight of aircraft, circuit boards play an irreplaceable and crucial role.

[0003] In the circuit board manufacturing process, from the selection and pretreatment of substrate materials to the lamination, drilling, and electroplating of multilayer boards, and then to the soldering and assembly of surface mount components (SMD), each step may lead to varying degrees of stress accumulation inside the circuit board due to factors such as differences in material properties, fluctuations in process parameters, and mechanical stress. These stresses can easily cause bending deformation of the circuit board under subsequent changes in ambient temperature, humidity, or mechanical impact.

[0004] Existing devices for detecting whether circuit boards are bent or deformed mostly use sensors located inside narrow enclosures. When these sensors are damaged and require repair, the limited space makes it difficult for workers to use repair tools, further prolonging repair time and reducing production efficiency. Therefore, we propose a high-precision bending detection device for circuit boards to solve the above problems. Utility Model Content

[0005] The main purpose of this invention is to provide a high-precision bending detection device for circuit boards, which can effectively solve the above problems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A high-precision bending detection device for circuit boards includes a support frame, a vacuum adsorption conveyor belt installed on the inner wall of the support frame, a box fixedly connected to the top of the support frame, a lifting assembly inside the box, and closing assemblies at both the left and right ends of the box.

[0008] Preferably, the lifting assembly includes two rotating shafts, the front and back outer surfaces of the two rotating shafts are rotatably connected to the inner wall of the housing, a motor is fixedly connected to the front of the housing, the output end of the motor is fixedly connected to the front of the rotating shaft located on the left side, and two gears are fixedly connected to the outer surfaces of the two rotating shafts.

[0009] Preferably, a pulley is fixedly connected to the back of each of the two rotating shafts, and a belt is connected to the outer surface of the two pulleys for transmission.

[0010] Preferably, four gear racks are slidably connected to the inner wall of the top of the support frame, the left ends of the four gear racks are meshed with the right ends of the gears on the same side, and a connecting frame is fixedly connected to the bottom of each of the four gear racks.

[0011] Preferably, a mounting plate is fixedly connected to the top of one of the four connecting brackets on the side closest to the center of the box. A laser contour sensor is installed at the bottom of the mounting plate, and a sealing plate is fixedly connected to the top of the mounting plate. The outer surface of the sealing plate is engaged with the inner wall of the top of the box.

[0012] Preferably, the two closing components are arranged symmetrically about the center of the box. Each closing component includes a light shield. Two slide rails are slidably connected to the outer surface of the light shield near the center of the box. The ends of the two slide rails near the center of the box are fixedly connected to the outer surface of the box.

[0013] Preferably, the top of the light shield is fixedly connected to two connecting brackets, and the bottom of the two connecting brackets near the center of the housing is fixedly connected to the top of the gear rack on the same side.

[0014] Preferably, two fixing rods are fixedly connected to the inner surface of the light-shielding plate, and sliders are slidably connected to the outer surfaces of the two fixing rods. A strip plate is fixedly connected to the top of the two sliders, and the bottom of the strip plate contacts the top of the box.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model, by setting up a lifting component, specifically, first turns on the motor to drive two rotating shafts to rotate counterclockwise. When the rotating shafts rotate, they push the mounting plate out of the box, allowing the staff to repair the laser contour sensor in a larger external space. This allows for convenient use of repair tools, significantly shortens repair time, reduces production line downtime, and improves production efficiency.

[0017] 2. This utility model, by setting a closing component, specifically, when the gear rack moves downward, it will drive the connecting frame two to move downward. As the gear rack continues to move downward, the light shield can gradually reduce the openings at the left and right ends of the housing, which can effectively reduce the influence of external light sources on the laser profile sensor, ensuring that the laser profile sensor only receives effective reflected signals from the surface of the circuit board, making the measurement data closer to the true value, thereby stabilizing and maintaining high-precision detection of the curvature of the circuit board. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box body of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the mounting plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the light-shielding plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of the connecting frame 2 of this utility model.

[0023] In the diagram: 1. Support frame; 11. Vacuum adsorption conveyor belt; 12. Box body; 2. Lifting assembly; 21. Rotating shaft; 211. Motor; 212. Gear; 22. Belt pulley; 221. Belt; 23. Gear rack; 24. Mounting plate; 241. Laser profile sensor; 242. Connecting frame one; 243. Sealing plate; 3. Closing assembly; 31. Light shield; 32. Slide rail; 33. Strip plate; 331. Connecting frame two; 332. Fixing rod; 333. Slider. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Example 1, as Figure 1-5 As shown, a high-precision bending detection device for circuit boards includes a support frame 1, a vacuum adsorption conveyor belt 11 installed on the inner wall of the support frame 1, a box 12 fixedly connected to the top of the support frame 1, a lifting assembly 2 disposed inside the box 12, and a closing assembly 3 disposed at both the left and right ends of the box 12.

[0026] Specifically, in order to enable the laser profile sensor to be moved out of the enclosure for maintenance, please refer to... Figure 2 and Figure 3 In this embodiment, the lifting assembly 2 includes two rotating shafts 21. The outer surfaces of the front and back sides of the two rotating shafts 21 are rotatably connected to the inner wall of the housing 12. A motor 211 is fixedly connected to the front side of the housing 12. The output end of the motor 211 is fixedly connected to the front side of the rotating shaft 21 located on the left side. Two gears 212 are fixedly connected to the outer surfaces of the two rotating shafts 21.

[0027] Further reading Figure 3 In this embodiment, both rotating shafts 21 are fixedly connected to the back of a pulley 22, and the outer surfaces of the two pulleys 22 are connected to a belt 221 for transmission.

[0028] Further reading Figure 3 In this embodiment, four gear racks 23 are slidably connected to the inner wall of the top of the support frame 1. The left ends of the four gear racks 23 are meshed with the right ends of the gears 212 on the same side. A connecting frame 242 is fixedly connected to the bottom of each of the four gear racks 23.

[0029] Further reading Figure 3 In this embodiment, the top of the four connecting brackets 242 is fixedly connected to the top of the side of the box 12 near the center. A laser contour sensor 241 is installed at the bottom of the mounting plate 24. A sealing plate 243 is fixedly connected to the top of the mounting plate 24. The outer surface of the sealing plate 243 is engaged with the inner wall of the top of the box 12.

[0030] The aforementioned laser profile sensor 241 is the German Micro-EpsilonscanCONTROL2900 series. Its features include: 405nm blue laser light, strong resistance to ambient light interference, and suitability for detecting reflective surfaces such as copper foil circuit boards.

[0031] During implementation, when bending detection of the circuit board is required, the circuit board is first placed on top of the vacuum adsorption conveyor belt 11 and transported to the inside of the housing 12 for detection. When the laser contour sensor 241 used for detection inside the housing 12 is damaged and needs repair, the motor 211 is first turned on to drive the rotating shaft 21 to rotate counterclockwise within the inner wall of the housing 12. When the rotating shaft 21 rotates, it drives the pulley 22 to rotate. When the pulley 22 rotates, it drives the pulley 22 located on the right side to rotate via the belt 221, so that the two rotating shafts 21 can rotate simultaneously within the housing 12. The rotating shaft 21 rotates counterclockwise within the inner wall, which in turn drives two gears 212 to rotate. When the gears 212 rotate counterclockwise, they drive the gear rack 23 to move upward. When the gear rack 23 moves upward, it pushes the mounting plate 24 upward through the connecting bracket 242. After the gear rack 23 moves upward a certain distance, it can push the mounting plate 24 out of the housing 12, allowing the staff to repair the laser contour sensor 241 in a larger external space. This allows for convenient use of repair tools, significantly shortens repair time, reduces production line downtime, and improves production efficiency.

[0032] After the laser profile sensor 241 is repaired, the motor 211 drives the rotating shaft 21 to rotate clockwise in the inner wall of the housing 12. During the clockwise rotation of the rotating shaft 21, the gear rack 23 will move downward, which can move the laser profile sensor 241 back into the housing 12.

[0033] Example 2: This example adds a closing component based on Example 1.

[0034] Specifically, in order to reduce the size of the openings at the left and right ends of the enclosure, please refer to... Figure 4 and Figure 5 In this embodiment, the two closing components 3 are arranged symmetrically to the left and right with the center of the box 12 as the center point. The closing component 3 includes a light shield 31. Two slide rails 32 are slidably connected to the outer surface of the light shield 31 near the center of the box 12. The ends of the two slide rails 32 near the center of the box 12 are fixedly connected to the outer surface of the box 12.

[0035] Further reading Figure 4 In this embodiment, two connecting brackets 331 are fixedly connected to the top of the light shield 31, and the bottom of the two connecting brackets 331 on the side near the center of the housing 12 are fixedly connected to the top of the gear rack 23 on the same side.

[0036] Further reading Figure 5 In this embodiment, two fixing rods 332 are fixedly connected to the inner surface of the light-shielding plate 31, and sliders 333 are slidably connected to the outer surfaces of the two fixing rods 332. A strip plate 33 is fixedly connected to the top of the two sliders 333, and the bottom of the strip plate 33 contacts the top of the box 12.

[0037] During implementation, when the gear rack 23 moves downward, it drives the connecting frame 331 to move downward. As the connecting frame 331 moves downward, it pushes the light shield 31 to slide downward in the inner wall of the two slide rails 32. As the gear rack 23 continues to move downward, the light shield 31 can gradually reduce the openings at the left and right ends of the housing 12. As the light shield 31 moves downward, the bottom of the strip plate 33 contacts the top of the housing 12, which drives the two sliders 333 to slide upward on the outer surface of the corresponding fixing rod 332. This allows the bottom of the strip plate 33 to remain in close contact with the gap between the housing 12 and the light shield 31, effectively reducing the influence of external light sources on the laser profile sensor 241. This ensures that the laser profile sensor 241 only receives effective reflected signals from the surface of the circuit board, making the measurement data closer to the true value, thereby stabilizing and maintaining high-precision detection of the curvature of the circuit board.

[0038] The working principle of this utility model is as follows: When a circuit board needs to be bent for inspection, the circuit board is first placed on top of the vacuum adsorption conveyor belt 11 and transported to the inside of the housing 12 for inspection. When the laser contour sensor 241 used for inspection inside the housing 12 is damaged and needs repair, the motor 211 is first turned on to drive the rotating shaft 21 to rotate counterclockwise in the inner wall of the housing 12. When the rotating shaft 21 rotates, it drives the pulley 22 to rotate. When the pulley 22 rotates, it drives the pulley 22 on the right side to rotate through the belt 221, so that the two rotating shafts 21 can rotate simultaneously in the housing. The rotating shaft 21 rotates counterclockwise within the inner wall of housing 12, which in turn drives two gears 212 to rotate. When gears 212 rotate counterclockwise, they drive gear rack 23 to move upward. When gear rack 23 moves upward, it pushes mounting plate 24 upward through connecting bracket 242. After gear rack 23 moves upward a certain distance, it can push mounting plate 24 out of the housing 12, allowing staff to repair the laser contour sensor 241 in a larger external space. This allows for convenient use of repair tools, significantly shortens repair time, reduces production line downtime, and improves production efficiency.

[0039] After the laser profile sensor 241 is repaired, the motor 211 drives the rotating shaft 21 to rotate clockwise in the inner wall of the housing 12. During the clockwise rotation of the rotating shaft 21, the gear rack 23 will move downward, which can move the laser profile sensor 241 back into the housing 12.

[0040] When the gear rack 23 moves downward, it drives the connecting frame 331 to move downward. As the connecting frame 331 moves downward, it pushes the light shield 31 to slide downward in the inner wall of the two slide rails 32. As the gear rack 23 continues to move downward, the light shield 31 can gradually reduce the openings at the left and right ends of the housing 12. As the light shield 31 moves downward, the bottom of the strip plate 33 contacts the top of the housing 12, which drives the two sliders 333 to slide upward on the outer surface of the corresponding fixing rod 332. This allows the bottom of the strip plate 33 to remain in close contact with the gap between the housing 12 and the light shield 31, effectively reducing the influence of external light sources on the laser profile sensor 241. This ensures that the laser profile sensor 241 only receives effective reflected signals from the surface of the circuit board, making the measurement data closer to the true value, thereby stabilizing and maintaining high-precision detection of the curvature of the circuit board.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision bending detection device for circuit boards, comprising a support frame (1), wherein a vacuum adsorption conveyor belt (11) is installed on the inner wall of the support frame (1), and a box (12) is fixedly connected to the top of the support frame (1), characterized in that: The box (12) is equipped with a lifting component (2) inside, and a closing component (3) is provided at both the left and right ends of the box (12). The lifting assembly (2) includes two rotating shafts (21). The outer surfaces of the front and back of the two rotating shafts (21) are rotatably connected to the inner wall of the housing (12). A motor (211) is fixedly connected to the front of the housing (12). The output end of the motor (211) is fixedly connected to the front of the rotating shaft (21) located on the left side. Two gears (212) are fixedly connected to the outer surfaces of the two rotating shafts (21).

2. The high-precision bending detection device for circuit boards according to claim 1, characterized in that: Both of the rotating shafts (21) are fixedly connected to the back of a pulley (22), and the outer surfaces of the two pulleys (22) are connected to a belt (221) for transmission.

3. The high-precision bending detection device for circuit boards according to claim 2, characterized in that: The support frame (1) has four gear racks (23) slidably connected to the inner wall of the top. The left end of each of the four gear racks (23) is meshed with the right end of the gear (212) on the same side. The bottom of each of the four gear racks (23) is fixedly connected to a connecting frame (242).

4. The high-precision bending detection device for circuit boards according to claim 3, characterized in that: The top of each of the four connecting brackets (242) is fixedly connected to a mounting plate (24) on the side near the center of the box (12). A laser profile sensor (241) is installed at the bottom of the mounting plate (24). A sealing plate (243) is fixedly connected to the top of the mounting plate (24). The outer surface of the sealing plate (243) is snapped into the inner wall of the top of the box (12).

5. A high-precision bending detection device for circuit boards according to claim 4, characterized in that: The two closing components (3) are arranged symmetrically to the left and right of the center of the box (12). The closing component (3) includes a light shield (31). Two slide rails (32) are slidably connected to the outer surface of the light shield (31) near the center of the box (12). The ends of the two slide rails (32) near the center of the box (12) are fixedly connected to the outer surface of the box (12).

6. The high-precision bending detection device for circuit boards according to claim 5, characterized in that: The top of the light shield (31) is fixedly connected to two connecting brackets (331), and the bottom of the two connecting brackets (331) on the side near the center of the box (12) is fixedly connected to the top of the gear rack (23) on the same side.

7. A high-precision bending detection device for circuit boards according to claim 6, characterized in that: Two fixing rods (332) are fixedly connected to the inner surface of the light shield (31). Sliding blocks (333) are slidably connected to the outer surfaces of the two fixing rods (332). A strip plate (33) is fixedly connected to the top of the two sliding blocks (333). The bottom of the strip plate (33) is in contact with the top of the box (12).

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