Circuit board welding quality detection device

Abstract

The utility model relates to the technical field of circuit board welding quality detection, and discloses a circuit board welding quality detection device which comprises a working table, a plurality of supporting frames are fixedly installed on the end face of the working table and vertically penetrate through the working table, a top plate is fixedly installed on the tops of the supporting frames, and a containing table is fixedly installed on the end face of the working table. A fastening mechanism is arranged on the end face of the workbench, a driving mechanism is arranged on the end face of the top plate, when a circuit board is observed and detected for the second time, the angle of the magnifying lens is adjusted by pressing and rotating a pressing rod, through the design of gears, a limiting effect is achieved, and when the pressing rod is loosened to rotate to a proper angle, the gears can be meshed together. The magnifying lens does not deviate when the welding of the circuit board is observed, and the position of the magnifying lens can be moved through the design of the fastening nut, so that the welding of the whole circuit board can be detected in a full-coverage manner.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board welding quality detection, and specifically, to a circuit board welding quality detection device. Background Art

[0002] The circuit board is the heart of modern electronic devices, and its welding quality directly affects the performance and reliability of electronic devices. Therefore, circuit board welding detection plays an extremely important role in the electronic manufacturing process. Through strict welding quality detection, the quality and stability of the circuit board can be ensured, and the overall performance and reliability of electronic devices can be improved. At the same time, with the continuous development and innovation of electronic devices, the requirements for the welding quality of circuit boards are getting higher and higher, which further promotes the development and progress of circuit board welding detection technology.

[0003] There are some drawbacks in the existing devices during use. For example, although the existing automatic detection system improves the detection accuracy and efficiency to a certain extent, there are still some deficiencies. When the existing technology performs secondary detection, generally, the contraction rod of the fixed magnifying glass is pulled to move to a specific position, which is time-consuming and has low accuracy in manual pulling. For example, when adjusting the angle of the magnifying glass by pulling the rotating contraction rod for secondary observation, since there is no limit on the contraction rod, the magnifying glass is easily deviated from the angle, and the magnifying glass needs to be adjusted again. Content of the Utility Model

[0004] The purpose of the utility model is to provide a circuit board welding quality detection device, which can solve the problems of quickly clamping and limiting the circuit board, clamping and limiting circuit boards of different specifications, and performing secondary observation and detection on the circuit board.

[0005] The utility model provides the following technical solution: a circuit board welding quality detection device, including a workbench, a plurality of support frames are fixedly installed on the end face of the workbench, the plurality of support frames vertically penetrate the workbench, the top of the support frame is fixedly installed with a top plate, a placement table is fixedly installed on the end face of the workbench, a fastening mechanism is arranged on the end face of the workbench, and a driving mechanism is arranged on the end face of the top plate.

[0006] As a preference of the above technical solution: the driving mechanism includes a first support plate, the first support plate is fixedly connected to the end face of the top plate, a first motor is fixedly installed on the end face of the first support plate, the power output end of the first motor is fixedly connected to a threaded rod, the threaded rod horizontally penetrates the top plate, a slider is sleeved on the threaded side wall of the threaded rod, an infrared detector is fixedly installed at the bottom of the slider, and a first limiting groove is opened on the end face of the top plate, and the top of the slider is slidably connected to the first limiting groove.

[0007] As a preference of the above technical solution: The fastening mechanism includes two bidirectional lead screws. The two bidirectional lead screws horizontally penetrate through the end face of the workbench. The two bidirectional lead screws are rotatably connected to the workbench. Transmission wheels are fixedly sleeved on the side walls of the two bidirectional lead screws. A conveyor belt is sleeved outside the two transmission wheels. The two transmission wheels are driven by the conveyor belt.

[0008] As a preference of the above technical solution: Two limit blocks are sleeved on the threaded parts of the two bidirectional lead screws. Second limit grooves are formed in the end face of the workbench. The bottoms of the two limit blocks are slidably connected to the second limit grooves. Limit plates are fixedly installed on the tops of the two limit blocks.

[0009] As a preference of the above technical solution: A second support plate is fixedly installed on the end face of the workbench. A second motor is fixedly installed on the end face of the second support plate. The power output end of the second motor is fixedly connected to the bidirectional lead screw.

[0010] As a preference of the above technical solution: A base is fixedly installed on the end face of the workbench. A housing is fixedly installed on the end face of the base. A spring is fixedly installed at the bottom of the housing. A first gear is fixedly installed on the end face of the housing. A pressing rod is slidably connected to the end face of the housing. A second gear is fixedly installed on the end face of the pressing rod. A magnifying glass is fixedly connected to the side wall of the pressing rod.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: When performing a secondary observation and detection on the circuit board, the angle of the magnifying glass is adjusted by pressing and rotating the pressing rod. Through the design of the gears, it is equivalent to a limiting function. When rotated to an appropriate angle and the pressing rod is released, the gears will mesh with each other, so that when observing the soldering of the circuit board, the magnifying glass will not shift its position. Through the design of the fastening nut, the position of the magnifying glass can be moved, and the entire soldering of the circuit board can be detected in a full-coverage manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of an overall circuit board soldering quality detection device;

[0013] Figure 2 It is a cross-sectional view of a driving mechanism of a circuit board soldering quality detection device;

[0014] Figure 3 It is a cross-sectional view of a fastening mechanism of a circuit board soldering quality detection device;

[0015] Figure 4 It is a partial cross-sectional view of a circuit board soldering quality detection device;

[0016] Figure 5 It is a schematic diagram of the gear position of a circuit board soldering quality detection device.

[0017] In the figure: 1, workbench; 11, support frame; 13, top plate; 14, placement table; 2, drive mechanism; 21, first support plate; 22, first motor; 23, threaded rod; 24, slider; 25, first limiting groove; 26, infrared detector; 3, fastening mechanism; 31, second support plate; 32, second motor; 33, second limiting groove; 34, bidirectional lead screw; 35, limiting block; 36, limiting plate; 37, conveyor wheel; 39, conveyor belt; 4, base; 41, housing; 42, spring; 43, first gear; 44, second gear; 45, pressing rod; 46, magnifying glass. Detailed implementation manner

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Embodiment 1

[0020] Such as Figure 1 Figure 2 And Figure 3As shown in the figure, the utility model provides a technical solution: a circuit board welding quality detection device, including a workbench 1, a plurality of support frames 11 are fixedly installed on the end face of the workbench 1, the plurality of support frames 11 vertically penetrate the workbench 1, the top of the support frame 11 is fixedly installed with a top plate 13, a placement table 14 is fixedly installed on the end face of the workbench 1, a fastening mechanism 3 is arranged on the end face of the workbench 1, a driving mechanism 2 is arranged on the end face of the top plate 13, the driving mechanism 2 includes a first support plate 21, the first support plate 21 is fixedly connected to the end face of the top plate 13, a first motor 22 is fixedly installed on the end face of the first support plate 21, a threaded rod 23 is fixedly connected to the power output end of the first motor 22, the threaded rod 23 horizontally penetrates the top plate 13, a slider 24 is sleeved on the threaded side wall of the threaded rod 23, a first limiting groove 25 is opened on the end face of the top plate 13, the top of the slider 24 is slidably connected to the first limiting groove 25. In the specific use process, the first motor 22 is started. When the first motor 22 is running, the power output end of the first motor 22 drives the threaded rod 23 to rotate. When the threaded rod 23 rotates, it drives the slider 24 to move left and right in the first limiting groove 25. During the left and right movement of the slider 24, it drives the infrared detector 26 to move left and right, thereby adjusting the position of the infrared detector 26. The welding defects are detected by infrared thermal imaging technology. This technology uses an infrared beam to radiate heat to the welding points of the circuit board, and then detects whether the heat release curve of the welding points is normal, so as to indirectly judge the welding quality and detect the welding area of the circuit board. The infrared detector 26 is a prior art, and its structure and function are the same as those of the infrared detector in the publication number CN112872649B. Therefore, it will not be described in detail here. The infrared detector 26 is electrically connected to an external controller. The data exported by the infrared detector 26 is analyzed, judged and processed by the controller, and then the external controller controls the buzzer to perform an alarm operation to remind the employee that there is a defect in this welding area.

[0021] As an implementation manner in this embodiment, as Figure 3As shown in the figure, the fastening mechanism 3 includes two bidirectional lead screws 34. The two bidirectional lead screws 34 horizontally penetrate through the end face of the workbench 1, and the two bidirectional lead screws 34 are rotatably connected to the workbench 1. Transmission wheels 37 are fixedly sleeved on the side walls of the two bidirectional lead screws 34. A conveyor belt 39 is sleeved outside the two transmission wheels 37. The two transmission wheels 37 are driven by the conveyor belt 39. Two limit blocks 35 are sleeved on the threaded parts of the two bidirectional lead screws 34. A second limit groove 33 is formed in the end face of the workbench 1. The bottoms of the two limit blocks 35 are slidably connected to the second limit groove 33. A limit plate 36 is fixedly installed on the tops of the two limit blocks 35. A second support plate 31 is fixedly installed on the end face of the workbench 1. A second motor 32 is fixedly installed on the end face of the second support plate 31. The power output end of the second motor 32 is fixedly connected to the bidirectional lead screw 34. In the specific use process, when the second motor 32 is started, when the power output end of the second motor 32 rotates clockwise, it drives the bidirectional lead screw 34 to rotate clockwise. When the bidirectional lead screw 34 rotates clockwise, it drives the limit block 35 to move towards the placement table 14 for placing the circuit board in the second limit groove 33. During the movement of the limit block 35, it drives the limit plate 36 to move towards the placement table 14 for placing the circuit board, thereby clamping and fixing the circuit board. When the power output end of the second motor 32 rotates counterclockwise, it drives the bidirectional lead screw 34 to rotate counterclockwise. When the bidirectional lead screw 34 rotates counterclockwise, it drives the limit block 35 to move away from the placement table 14 for placing the circuit board in the second limit groove 33. During the movement of the limit block 35, it drives the limit plate 36 to move away from the placement table 14 for placing the circuit board.

[0022] As an implementation manner in this embodiment, as Figure 4 and Figure 5 shown, a base 4 is fixedly installed on the end face of the workbench 1. A housing 41 is fixedly installed on the end face of the base 4. A spring 42 is fixedly installed at the bottom of the housing 41. A first gear 43 is fixedly installed on the end face of the housing 41. A pressing rod 45 is slidably connected to the end face of the housing 41. A second gear 44 is fixedly installed on the end face of the pressing rod 45. A magnifying glass 46 is fixedly connected to the side wall of the pressing rod 45. In the specific use process, after the infrared detector 26 finishes the inspection, the magnifying glass 46 is placed in the pressing rod 45. The length of the magnifying glass 46 can be adjusted through the fastening nut. When the pressing rod 45 is pressed, the pressing rod 45 moves downward. When the pressing rod 45 moves downward, it drives the second gear 44 to move downward. When the second gear 44 contacts the spring 42, the spring 42 deforms. Rotate the pressing rod 45 to adjust the position of the magnifying glass 46. After the position adjustment is completed, release the pressing rod 45. When the pressing rod is no longer stressed, the spring 42 will automatically reset, driving the second gear 44 to move upward, and finally meshing with the first gear 43. The magnifying glass 46 performs a second inspection on the circuit board.

[0023] Working principle: Start the second motor 32. When the power output end of the second motor 32 rotates clockwise, it drives the bidirectional lead screw 34 to rotate clockwise. When the bidirectional lead screw 34 rotates clockwise, it drives the limit block 35 to move towards the placement table 14 for placing the circuit board in the second limit groove 33. During the movement of the limit block 35, it drives the limit plate 36 to move towards the placement table 14 for placing the circuit board, thereby clamping and fixing the circuit board. After the clamping and fixing are completed, start the first motor 22. When the first motor 22 is running, the power output end of the first motor 22 drives the threaded rod 23 to rotate. When the threaded rod 23 rotates, it drives the slider 24 to move left and right in the first limit groove 25. During the left and right movement of the slider 24, it drives the infrared detector 26 to move left and right, thereby adjusting the position of the infrared detector 26 to detect the welding point of the circuit board. When it travels to a specific position, after the infrared detector 26 finishes detecting, place the magnifying glass 46 in the pressing rod 45. The length of the magnifying glass 46 can be adjusted through the fastening nut. When pressing the pressing rod 45, the pressing rod 45 moves downward. When the pressing rod 45 moves downward, it drives the second gear 44 to move downward. When the second gear 44 contacts the spring 42, the spring 42 deforms. Rotate the pressing rod 45 to adjust the position of the magnifying glass 46. After the position adjustment is completed, release the pressing rod 45. When the pressing rod is no longer stressed, the spring 42 will automatically reset, driving the second gear 44 to move upward and finally engage with the first gear 43. The magnifying glass 46 performs a second inspection on the circuit board.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A circuit board welding quality detection device, comprising a workbench (1), characterized in that: A plurality of support frames (11) are fixedly mounted on the end surface of the workbench (1), the plurality of support frames (11) vertically pass through the workbench (1), a top plate (13) is fixedly mounted on the top of the support frame (11), a placement table (14) is fixedly mounted on the end surface of the workbench (1), a fastening mechanism (3) is arranged on the end surface of the workbench (1), and a driving mechanism (2) is arranged on the end surface of the top plate (13).

2. A circuit board welding quality detection device according to claim 1, characterized in that: The driving mechanism (2) comprises a first support plate (21), the first support plate (21) is fixedly connected to the end surface of the top plate (13), a first motor (22) is fixedly mounted on the end surface of the first support plate (21), a threaded rod (23) is fixedly connected to the power output end of the first motor (22), the threaded rod (23) passes through the top plate (13) transversely, a sliding block (24) is sleeved on the threaded side wall of the threaded rod (23), an infrared detector (26) is fixedly mounted on the bottom of the sliding block (24), a first limiting groove (25) is opened on the end surface of the top plate (13), and the top of the sliding block (24) is slidably connected to the first limiting groove (25).

3. A circuit board welding quality detection device according to claim 1, characterized in that: The fastening mechanism (3) comprises two bidirectional screw rods (34), the two bidirectional screw rods (34) transversely penetrate the end surface of the workbench (1), the two bidirectional screw rods (34) are rotatably connected to the workbench (1), the side walls of the two bidirectional screw rods (34) are fixedly sleeved with transmission wheels (37), the outer sides of the two transmission wheels (37) are sleeved with transmission belts (39), and the two transmission wheels (37) are driven by the transmission belts (39).

4. A circuit board welding quality detection device according to claim 3, characterized in that: Two limit blocks (35) are sleeved on the threads of the two bidirectional screw rods (34), a second limit groove (33) is opened on the end surface of the workbench (1), the bottoms of the two limit blocks (35) are slidably connected to the second limit groove (33), and a limit plate (36) is fixedly installed on the tops of the two limit blocks (35).

5. A circuit board welding quality detection device according to claim 3, characterized in that: A second support plate (31) is fixedly mounted on the end surface of the workbench (1), a second motor (32) is fixedly mounted on the end surface of the second support plate (31), and a power output end of the second motor (32) is fixedly connected to a bidirectional screw rod (34).

6. A circuit board welding quality detection device according to claim 1, characterized in that: The end surface of the workbench (1) is fixedly mounted with a base (4), the end surface of the base (4) is fixedly mounted with a shell (41), the bottom of a spring (42) is fixedly mounted on the shell (41), the end surface of the shell (41) is fixedly mounted with a first gear (43), the end surface of the shell (41) is slidably connected with a pressing rod (45), the end surface of the pressing rod (45) is fixedly mounted with a second gear (44), and the side wall of the pressing rod (45) is slidably connected with a magnifying glass (46).

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