Circuit board quality inspection machine

Abstract

The invention relates to a circuit board quality inspection machine, and the machine comprises a quality inspection mechanism which is used for detecting the quality of circuit boards and classifying the circuit boards into good products and defective products; the cleaning mechanism is arranged at the input end of the quality inspection mechanism and comprises a cleaning pool, a mounting frame used for placing the circuit board and a clamping assembly used for placing the circuit board into the mounting frame, and the mounting frame is mounted in the cleaning pool; a mounting opening for placing a circuit board is formed above the mounting frame, a plurality of rotating shafts are rotatably mounted on the mounting frame at intervals in the circumferential direction of the mounting opening, the rotating shafts are vertically arranged, and a transmission assembly for driving the rotating shafts to synchronously rotate is arranged on the mounting frame; a plurality of brushes are arranged on the outer side wall of each rotating shaft in the radial direction. The circuit board cleaning device has the effects of cleaning the circuit board before quality inspection and improving the quality inspection accuracy.

Description

Technical Field

[0001] This application relates to the field of circuit board manufacturing and quality inspection, and in particular to a circuit board quality inspection machine. Background Technology

[0002] Circuit boards are an indispensable component of various electronic devices, and their quality directly affects the performance and reliability of these devices. The manufacturing process of circuit boards involves a series of meticulous processing steps, including drilling. Drilling creates through-holes or blind holes on the circuit board to facilitate the installation of electronic components or circuit connections. After completing these processes, the circuit board also needs to be inspected to ensure it meets design specifications and quality standards.

[0003] Currently, the quality inspection of circuit boards mainly relies on quality inspection machines, which use high-precision optical or electromagnetic detection systems to conduct a comprehensive inspection of the circuit boards.

[0004] Regarding the aforementioned technologies, the drilling process often generates a large amount of cutting dust, which can adhere to the surface of the circuit board. The cutting dust present on the circuit board surface may interfere with the inspection device, thereby reducing the accuracy of quality inspection. For example, the dust may block the light source or camera of the quality inspection machine, causing the quality inspection machine to be unable to accurately identify defects or abnormalities on the circuit board. Therefore, how to effectively deal with the cutting dust on the surface of the circuit board, improve the accuracy of quality inspection, and reduce unnecessary repeated testing is an important technical problem that the circuit board manufacturing industry needs to solve. Summary of the Invention

[0005] In order to clean circuit boards before quality inspection and improve the accuracy of quality inspection, this application provides a circuit board quality inspection machine.

[0006] A circuit board quality inspection machine includes an inspection mechanism for detecting the quality of circuit boards and classifying them into good and defective products. A cleaning mechanism, located at the input end of a quality inspection mechanism, includes a cleaning tank, a mounting frame for placing circuit boards, and a clamping assembly for placing the circuit boards into the mounting frame. The mounting frame is installed inside the cleaning tank. An mounting opening for placing the circuit boards is provided above the mounting frame. Several rotating shafts are rotatably mounted on the mounting frame at intervals along the circumference of the mounting opening. Each rotating shaft is vertically arranged. A transmission assembly is provided on the mounting frame to drive the rotating shafts to rotate synchronously. Several brushes are radially arranged on the outer side wall of each rotating shaft.

[0007] By adopting the above technical solution, before quality inspection, the circuit board is first placed into the opening of the mounting frame by the clamping component. Then, the rotating shaft rotates in the mounting frame, and the dust on the circuit board is swept out by the brushes in the cleaning tank. Because the rotating shaft is circumferentially set at the opening of the circuit board, after the circuit board is placed vertically into the mounting frame, the circuit board is in a completely exposed state because there is no object clamping the circuit board. Each brush can clean the circuit board from all angles, further improving the cleaning effect of the circuit board. Meanwhile, because the brushes are soft, they cushion the circuit boards placed in the mounting rack, reducing the risk of damage from collisions after being swept by the brushes. The cleaned circuit boards are collected by workers and transported to the quality inspection facility. Defective boards are placed in the defective board area and then transported back to the cleaning facility for further cleaning before being sent to the quality inspection facility again. This ensures that defective circuit boards are cleaned and inspected again, improving resource utilization and reducing waste. The cleaning facility also reduces the impact of dust on the quality inspection process, allowing qualified circuit boards to proceed to the next stage of production, thus improving the quality of the final product.

[0008] Preferably, there are several mounting brackets, and the cleaning mechanism further includes a drive assembly for driving the cleaning brushes on the several mounting brackets to rotate synchronously.

[0009] By adopting the above technical solution, multiple mounting racks are set up. After the circuit board is placed on the mounting rack using the clamping component, the drive component is activated to drive the brushes on the multiple mounting racks to rotate synchronously and clean multiple circuit boards at the same time. The staff only needs to use the clamping component to put the circuit board into the mounting rack in the cleaning tank and activate the drive component to clean the circuit board, which improves the efficiency of cleaning circuit boards.

[0010] Preferably, the drive assembly includes a planetary gear set and a central shaft. The planetary gear set is installed in the cleaning tank and each component rotates in the horizontal direction. The central shaft is rotatably installed in the cleaning tank. The sun gear of the planetary gear set is sleeved on the central shaft. Each mounting bracket corresponds one-to-one with each planetary gear. The mounting bracket is fixedly installed on the planet carrier of the corresponding planetary gear. One of the rotating shafts passes through the planetary gear and is located at the center of the cross-section of the planetary gear. The planet carrier is fixedly installed in the cleaning tank. The cleaning tank is also equipped with a first drive component for driving the central shaft to rotate. When the central shaft rotates, the planetary gears are driven to rotate on the fixed planet carrier through the linkage of the sun gear.

[0011] By adopting the above technical solution, when cleaning the circuit boards in the mounting rack using the drive assembly, the first drive component is activated to drive the central shaft to rotate, which in turn drives the components in the planetary gear set to rotate. The mounting rack is fixedly mounted on the planetary carrier, and the planetary gears rotate in their fixed positions, thereby driving one of the shafts on the mounting rack to rotate. Through the cooperation of the transmission assembly, the other shafts are driven to rotate synchronously, thus starting the cleaning and dust removal of the circuit boards. By using the planetary gear set to clean the circuit boards in multiple mounting racks simultaneously, the mounting rack can achieve multi-angle and all-round cleaning actions in a limited space, improving the space utilization efficiency.

[0012] Preferably, the clamping assembly includes a guide rail and a lifting frame. The lifting frame is telescopically mounted on the guide rail in a vertical direction. A pair of clamping blocks are installed at the bottom of the lifting frame, with the clamping blocks facing the opening of the mounting frame. A gap is left between the two clamping blocks for placing the circuit board. An elastic element is provided between the two clamping blocks to drive the two clamping blocks to move towards each other. A second driving element is also installed on the mounting frame to drive the two clamping blocks to move away from each other when the lifting frame falls.

[0013] By adopting the above technical solution, the worker clamps the circuit board between a pair of clamping blocks. The elastic element allows the clamping blocks to stably hold the circuit board, reducing the risk of the circuit board falling during the movement of the clamping blocks. When the lifting frame is directly above the cleaning tank, the lifting frame is lowered until the clamping blocks are directly facing the opening of the mounting frame. At this time, the second driving component is used to drive the pair of clamping blocks to move away from each other, thereby releasing the clamping blocks from the circuit board. The circuit board falls from the opening under its own weight and enters the mounting frame. Because the clamping blocks need to enter the cleaning tank multiple times to put the circuit board into the mounting frame, this clamping method uses a purely mechanical method to fix the circuit board in the clamping blocks, reducing the contact between the liquid in the cleaning tank and the circuit, thereby reducing the possibility of short circuit when the clamping components come into contact with water.

[0014] Preferably, the second driving component includes a guide block, which is mounted on the top of the mounting bracket. The top of the guide block faces the gap between the two clamping blocks, and a first guide surface is provided on one side of the guide block facing the two clamping blocks.

[0015] By adopting the above technical solution, after the lifting frame descends directly above the mounting frame, it continues to descend. The guide block is inserted between a pair of clamping blocks, and under the action of the first guide surface, it lifts the clamping blocks, thereby swinging the pair of clamping blocks away from each other, releasing the clamping of the circuit board, so that the circuit board can fall smoothly. This driving method does not require an external driving component. It is only necessary to continue to lower the lifting frame to release the clamping blocks from fixing the circuit board.

[0016] Preferably, the mounting bracket has a first sliding groove extending vertically at the bottom of the mounting opening. A first push rod is slidably mounted on the mounting bracket within the first sliding groove. The top end of the first push rod abuts against the circuit board, and the bottom end of the first push rod protrudes from the mounting bracket. A top block is provided on the gear ring of the planetary gear set. The top block has a second guide surface at both ends along the rotation direction of the gear ring. The top block rotates with the gear ring, and the bottom end of the first push rod protruding from the mounting bracket is located on the moving path of the top block.

[0017] To facilitate the removal of the circuit board from the mounting bracket by the clamping block, the above-mentioned technical solution is adopted. The mounting bracket is equipped with a first push rod at the bottom of the circuit board. When the first driving component drives the central shaft to rotate, thereby driving the components of the planetary gear set to rotate, the planetary carrier is fixedly connected to the inside of the cleaning tank, allowing the gear ring to rotate relative to the cleaning tank. After the push block rotates with the gear ring, the guide surface on the push block abuts against the end of the first push rod that protrudes from the mounting bracket, thereby driving the first push rod to slide vertically in the first sliding groove, thus lifting the circuit board. This allows the clamping assembly to more easily re-clamp the circuit board protruding from the mounting bracket and send it to the quality inspection agency.

[0018] Preferably, the bottom sidewall of the guide block is hinged to the mounting frame, and the top end rotates upward away from the mounting frame; the mounting frame has a second sliding groove extending vertically directly below the guide block, and a second push rod is slidably mounted in the second sliding groove on the mounting frame; a third driving member is mounted on the mounting frame to drive the second push rod to slide with the first push rod; the top end of the second push rod abuts against the guide block, and when the second push rod slides upward, it pushes the guide block to rotate; a reset member is mounted on the second push rod to drive the tilted guide block back to vertical after rotation.

[0019] Because when the lifting frame falls, the first guide surface on the vertically set guide block will always move the clamping blocks away from each other, making it difficult for the clamping blocks on the lifting frame to stably clamp the circuit board after the second fall. By adopting the above technical solution, when the lifting frame falls for the second time, the third driving member drives the second push rod to slide upward in the vertical direction in the second sliding groove, thereby pushing down the guide block hinged on the mounting frame. This prevents the guide block from being inserted between the pair of clamping blocks when the lifting frame falls for the second time, allowing the circuit board to be stably inserted between the pair of clamping blocks. This allows the circuit board to be smoothly removed from the mounting frame after the lifting frame is raised.

[0020] Preferably, the third driving component is a connecting rod, one end of which is fixedly connected to the first top rod and the other end of which is connected to the second top rod. The mounting bracket has a clearance groove for the connecting rod to pass through the mounting bracket and connect to the second top rod. When the top block drives the first top rod to slide upward, the second top rod slides synchronously through the linkage of the connecting rod.

[0021] By adopting the above technical solution, the rotation of the gear ring drives the top block to move, which in turn drives the first top rod to slide vertically upward. The connecting rod connects the first top rod and the second top rod. When the first top rod slides, it simultaneously drives the second top rod to slide vertically upward, which in turn drives the second top rod to push the guide block down, so that the clamping block can stably clamp the circuit board when it falls for the second time.

[0022] Preferably, the reset component is a rope, with one end of the rope fixedly connected to the bottom end of the guide block and the other end fixedly connected to the top end of the second push rod.

[0023] By adopting the above technical solution, when the gear ring continues to rotate, it drives the top block to move. At this time, the top block no longer abuts against the bottom end of the second push rod. Under its own weight, the second push rod slides vertically downward in the second sliding groove. The rope provides a downward force to the guide block, thereby pulling the guide block to rotate on the mounting bracket. The guide block eventually becomes vertical again, so that the guide block can play its original role after the first circuit board is removed and before the second circuit board is lowered. This driving method drives the guide block to rotate by the weight of the second push rod, reducing the cost of external driving components.

[0024] Preferably, a pair of lifting frames are provided, and both lifting frames are slidably installed on the guide rail.

[0025] By adopting the above technical solution, when the clamping blocks on one of the lifting frames are full of circuit boards and the circuit boards are put into the cleaning tank, the worker can install circuit boards on a pair of clamping blocks on the other lifting frame, thereby improving work efficiency and increasing the economic benefits of the factory.

[0026] In summary, this application has at least the following beneficial effects: 1. Before quality inspection, the circuit board is placed into the opening of the mounting rack using the clamping assembly. Then, the rotating shaft rotates inside the mounting rack, and the dust on the circuit board is swept away by the brushes in the cleaning tank. Because the rotating shaft is circumferentially set at the opening of the circuit board, after the circuit board is placed vertically into the mounting rack, the circuit board is completely exposed because there is no object clamping it. Each brush can clean the circuit board from all angles, further improving the cleaning effect of the circuit board.

[0027] 2. To facilitate the removal of the circuit board from the mounting bracket by the clamping block, a first push rod is provided at the bottom of the circuit board in the mounting bracket. When the first driving component drives the central shaft to rotate, thereby driving the components of the planetary gear set to rotate, the planetary carrier is fixedly connected to the inside of the cleaning tank, allowing the gear ring to rotate relative to the cleaning tank. After the push block rotates with the gear ring, the guide surface on the push block abuts against the end of the first push rod that protrudes from the mounting bracket, thereby driving the first push rod to slide vertically in the first sliding groove, thus lifting the circuit board. This allows the clamping assembly to more easily re-clamp the circuit board protruding from the mounting bracket and send it to the quality inspection agency.

[0028] 3. Because when the lifting frame falls, the first guide surface on the vertically set guide block will always move the clamping blocks away from each other, making it difficult for the clamping blocks on the lifting frame to stably clamp the circuit board after the second fall. By adopting the above technical solution, when the lifting frame falls for the second time, the third driving component drives the second push rod to slide vertically upward in the second sliding groove, thereby pushing down the guide block hinged on the mounting frame. This prevents the guide block from being inserted between the pair of clamping blocks when the lifting frame falls for the second time, allowing the circuit board to be stably inserted between the pair of clamping blocks. This allows the circuit board to be smoothly removed from the mounting frame after the lifting frame rises. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the inspection mechanism of a circuit board quality inspection machine according to an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the cleaning mechanism structure of a circuit board quality inspection machine according to an embodiment of this application.

[0031] Figure 3 This is a schematic diagram of the mounting frame structure of the quality inspection mechanism of a circuit board quality inspection machine according to an embodiment of this application.

[0032] Figure 4 This is a schematic diagram of the internal structure of the cleaning mechanism of a circuit board quality inspection machine according to an embodiment of this application.

[0033] Figure 5 This is a front cross-sectional view of the mounting frame of the quality inspection mechanism of a circuit board quality inspection machine according to an embodiment of this application.

[0034] Figure 6 This is a side cross-sectional view of the mounting frame of a circuit board quality inspection machine according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures: 1. Quality inspection mechanism; 2. Cleaning mechanism; 21. Cleaning tank; 211. First driving component; 3. Mounting frame; 31. Mounting port; 32. Rotating shaft; 33. Transmission assembly; 331. First gear; 332. Second gear; 333. Chain; 34. Guide block; 35. First sliding groove; 351. First push rod; 352. Connecting rod; 36. Second sliding groove; 361. Second push rod; 37. Connecting rod; 38. Rope; 4. Clamping assembly; 41. Guide rail; 42. Lifting frame; 421. Sliding block; 422. Telescopic rod; 423. Lifting block; 424. Support rod; 43. Clamping block; 44. Elastic element; 5. Drive assembly; 51. Planetary gear set; 511. Planetary carrier; 512. Sun gear; 52. Central shaft; 53. Top block. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] This application discloses a circuit board quality inspection machine.

[0038] Reference Figure 1 A circuit board quality inspection machine includes: a quality inspection mechanism 1, used to inspect the quality of circuit boards and classify them into good products and defective products. In this embodiment, the quality inspection mechanism 1 is an X-ray circuit board inspection machine. The operator places the circuit board into the inspection port of the quality inspection mechanism 1 and performs relevant operations to determine whether the circuit board is a good product or a defective product.

[0039] Reference Figure 2 and Figure 3 The cleaning mechanism 2 is located at the input end of the quality inspection mechanism 1, and includes a cleaning tank 21 with an annular cross-section, a mounting frame 3 for placing circuit boards, and a clamping assembly 4 for placing circuit boards into the mounting frame 3. The mounting frame 3 has a rectangular cross-section, and multiple mounting frames 3 are installed in the cleaning tank 21. Two mounting ports 31 for placing circuit boards are provided above the mounting frame 3.

[0040] Reference Figure 3The mounting frame 3 has multiple rotating shafts 32 spaced circumferentially along each mounting opening 31. These rotating shafts 32 are divided into multiple groups, with each group arranged along the length of the mounting frame 3 and within the same group, along the width. Each rotating shaft 32 is vertically mounted and rotatably mounted on the mounting frame 3. Each mounting frame 32 has a transmission assembly 33 for synchronously driving the rotating shafts 32 on the same mounting frame 3. In this embodiment, the transmission assembly 33 includes a first gear 331, a second gear 332, and multiple sets of chains 333. Each rotating shaft 32 in the same group is fitted with a... The first gear 331, each of the first gears 331 in the same group is fitted with the same chain 333, and the second gear 332 is fitted on the rotating shaft 32 located in the same column in each group. Each second gear 332 is fitted with the same chain 333. Through the cooperation of the first gear 331, the second gear 332 and the chain 333, only one rotating shaft 32 fitted with the second gear 332 needs to be rotated to drive the other rotating shafts 32 to rotate synchronously. Multiple sets of brushes are arranged radially on the outer side wall of each rotating shaft 32. The cleaning mechanism 2 also includes a drive assembly 5 for driving the rotating shafts 32 on multiple mounting brackets 3 to rotate synchronously.

[0041] Using the clamping assembly 4, multiple circuit boards are placed into the mounting port 31 of the mounting bracket 3. The drive assembly 5 is then activated, causing the rotating shaft 32 to rotate. At this time, the circuit boards placed in the mounting port 31 are completely immersed in the cleaning tank 21, with no object clamping them, and are fully exposed in the cleaning tank 21. After the rotating shaft 32 rotates, the brush sweeps the circuit boards, removing the dust generated during the previous processing of the circuit boards, thereby achieving the purpose of cleaning the circuit boards. In this process, the contact area between the circuit boards and the liquid in the cleaning tank 21 is increased, thus greatly improving the cleaning effect.

[0042] Reference Figure 1 and Figure 4The clamping assembly 4 includes a guide rail 41 and a pair of lifting frames 42. The guide rail 41 is used for installation on the ground or a horizontal work platform and is located directly above the cleaning mechanism 2. The lifting frame 42 includes a sliding block 421, a telescopic rod 422, and multiple lifting blocks 423. The sliding blocks 421 on both lifting frames 42 are slidably mounted on the guide rail 41. One end of the telescopic rod 422 is connected to the sliding block 421, and the other end is connected to multiple support rods 424. The end of each support rod 424 away from the telescopic rod 422 is fixedly connected to the lifting block 423. The lifting blocks 423 correspond one-to-one with the mounting frame 3. Each lifting block 423 is equipped with two pairs of clamping blocks 43. When the lifting block 423 is aligned with the mounting frame 3 and falls, each pair of clamping blocks 43 is aligned with the mounting opening 31. The two clamping blocks 43 of the same pair are clamped together. A gap is left between the two clamping blocks 43 for placing the circuit board. An elastic element is provided between the two clamping blocks 43 of the same pair to drive the two clamping blocks 43 to move towards each other. In this embodiment, the elastic element is a spring, and the two ends of the spring are respectively fixedly connected to the side of the two clamping blocks 43 of the same pair that are close to each other. The mounting frame 3 is also equipped with a second driving element to drive the two clamping blocks 43 to move away from each other when the lifting frame 42 falls. The second driving element includes two pairs of guide blocks 34. The two guide blocks 34 of the same pair are installed on the two opposite sides of the top of the mounting frame 3 and are located on both sides of the mounting opening 31. The top of the two guide blocks 34 of the same pair is directly opposite the gap between the two clamping blocks 43 of the same pair. The side of the guide block 34 facing the two clamping blocks 43 is provided with a first guide surface.

[0043] When the lifting block 423 falls directly above the mounting frame 3, the guide block 34 inserts between the two clamping blocks 43 in the same group, forcing the two clamping blocks 43 to open and release the clamping of the circuit board, allowing the circuit board to enter the mounting frame 3 by its own weight. A buffer block is provided at the bottom of the mounting opening 31 to reduce the possibility of the circuit board falling into the mounting frame 3 and being damaged. This method reduces the possibility of the charged mechanical structure entering the cleaning tank 21 and being soaked in the cleaning fluid and causing damage, thus improving the safety of the cleaning mechanism.

[0044] Reference Figure 4 and Figure 5The drive assembly 5 includes a planetary gear set 51 and a central shaft 52. The planetary gear set 51 is installed inside the cleaning tank 21 and its components rotate horizontally. The planet carrier 511 of the planetary gear set 51 is fixedly installed in the cleaning tank 21. The central shaft 52 is rotatably installed in the cleaning tank and is located at the center of the cross-section of the cleaning tank 21. The sun gear 512 of the planetary gear set 51 is sleeved on the central shaft 52 and rotates with the central shaft 52. The cleaning tank 21 is equipped with a first drive member 211 for driving the central shaft 52 to rotate. In this embodiment, the first drive member 211 is a motor. The motor is fixedly installed at the bottom of the cleaning tank 21. One end of the central shaft 52 that passes through the cleaning tank 21 is fixedly connected to the output end of the motor. Each mounting bracket 3 corresponds to each planetary gear. The mounting bracket 3 is fixedly installed on the planet carrier 511 of the corresponding planetary gear. One of the rotating shafts 32 of the second gear 332 is sleeved on the mounting bracket 3 and passes through the planetary gear and is located at the center of the cross-section of the planetary gear.

[0045] By using planetary gear sets 51 to synchronously drive the rotating shafts 32 on each mounting bracket 3 to rotate, when the central shaft 52 rotates under the drive of the first drive member 211, the planetary gears are driven to rotate on the fixed planetary carrier 511 through the linkage between the planetary gear sets 51. The rotation of the planetary gears drives the rotating shafts 32 sleeved on the planetary gears to rotate, so that the rotating shafts 32 sleeved on the planetary gears on each mounting bracket 3 rotate. With the cooperation of the transmission component 33, the rotating shafts 32 on the same mounting bracket 3 rotate synchronously, so that multiple circuit boards can be cleaned at one time, thus speeding up the cleaning efficiency.

[0046] Reference Figure 4 and Figure 5 The mounting bracket 3 has a first sliding groove 35 extending vertically directly below the mounting opening 31. A first push rod 351 is slidably mounted in the first sliding groove 35. The top end of the first push rod 351 abuts against the circuit board, and the bottom end of the first push rod 351 protrudes from the mounting bracket 3. A top block 53 is provided on the gear ring of the planetary gear set 51. The top block 53 rotates with the gear ring. Both ends of the top block 53 along the rotation direction of the gear ring are provided with second guide surfaces. The bottom of the first push rod 351 protrudes from the mounting bracket. One end of 3 is located on the moving path of the top block 53. When the circuit board needs to be lifted out of the mounting bracket 3 by the clamping assembly 4, the first drive component 211 is activated to drive the sun gear 512 to rotate. Through the cooperation between the components of the planetary gear set 51, the gear ring is driven to rotate, thereby moving the top block 53. When the top block 53 moves directly below the first push rod 351, the top block 53 lifts the first push rod 351 under the action of the second guide surface, thereby driving the circuit board to move upward, so that the clamping assembly 4 can clamp the circuit board.

[0047] Reference Figure 6Two first push rods 351 are provided on the same mounting bracket 3, and a connecting rod 352 is provided between the two first push rods 351. The two ends of the connecting rod 352 are respectively connected to the two first push rods 351. When the first push rod 351 located on the displacement path of the top block 53 is lifted, the other first push rod 351 is simultaneously lifted under the action of the connecting rod 352, lifting the circuit board in the other mounting port 31, so that the clamping assembly 4 can lift the circuit board.

[0048] Reference Figure 5 The bottom end of the guide block 34 is hinged to the side wall of the mounting frame 3, and the top end rotates upward away from the mounting frame 3. The mounting frame 3 has a second sliding groove 36 extending vertically directly below the guide block 34. The mounting frame 3 slides a second push rod 361 in the second sliding groove 36. The mounting frame 3 is equipped with a third driving member for driving the second push rod 361 to slide with the first push rod 351. The top end of the second push rod 361 abuts against the guide block 34. When the second push rod 361 slides upward, it pushes the guide block 34 to rotate. The second push rod 361 is equipped with a reset member for driving the tilted guide block 34 to return to the vertical position after rotation. When the lifting frame 42 falls, the guide block 34 will cause the two pairs of clamping blocks 43 to open, making it difficult for the clamping blocks 43 to clamp the circuit board. Under the action of the third driving member, the second top rod 361 is driven to slide upward, thereby driving the guide block 34 hinged on the mounting frame 3 to rotate. The first guide surface is no longer directly facing the gap between the two clamping blocks 43 of the same pair, so that the clamping blocks 43 can re-clamp the circuit board after falling.

[0049] Reference Figure 5 The third driving component consists of multiple connecting rods 37, which are horizontally arranged. Each connecting rod 37 is fixedly connected at one end to the first top rod 351 and at the other end to the second top rod 361. The mounting bracket 3 has a clearance groove for the connecting rods 37 to slide upward. When the top block 53 drives the first top rod 351 to slide upward, the second top rod 361 slides synchronously through the linkage of the connecting rods 37.

[0050] The reset component is a rope 38. One end of the rope 38 is fixedly connected to the bottom end of the guide block 34, and the other end is fixedly connected to the top end of the second push rod 361. When the first push rod 351 no longer abuts against the top block 53, the first push rod 351 slides down by its own weight, which drives the second push rod 361 to slide down. The second fixed push rod pulls the guide block 34 to reset under the action of the rope 38.

[0051] The implementation principle of this application embodiment is as follows: First, the circuit board is placed between the clamping blocks 43 of the clamping assembly 4. Then, the lifting block 423 is lowered into the mounting frame 3 of the cleaning mechanism by the clamping assembly 4. The first driving component 211 is activated to drive the planetary gear set 51 to rotate, thereby driving the rotating shaft 32 on the mounting frame 3 to rotate, removing the dust on the circuit board. Then, the clamping assembly 4 is used to remove the circuit board from the mounting frame 3. After the workers dry the circuit board, it is sent into the quality inspection mechanism 1, thereby improving the accuracy of the quality inspection effect.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A circuit board quality inspection machine, characterized in that, include Quality inspection agency (1) is used to inspect the quality of circuit boards and classify them into good and bad products; A cleaning mechanism (2) is located at the input end of the quality inspection mechanism (1), including a cleaning tank (21), a mounting frame (3) for placing circuit boards, and a clamping assembly (4) for placing circuit boards into the mounting frame (3). The mounting frame (3) is installed in the cleaning tank (21). An installation port (31) for placing circuit boards is provided above the mounting frame (3). Several rotating shafts (32) are rotatably mounted on the mounting frame (3) at intervals around the installation port (31). Each rotating shaft (32) is vertically arranged. A transmission assembly (33) is provided on the mounting frame (3) for driving each rotating shaft (32) to rotate synchronously. Several brushes are radially arranged on the outer side wall of each rotating shaft (32).

2. The circuit board quality inspection machine according to claim 1, characterized in that, The mounting bracket (3) is provided in a plurality of units, and the cleaning mechanism (2) further includes a drive assembly (5) for driving the rotating shafts (32) on the plurality of mounting brackets (3) to rotate synchronously.

3. The circuit board quality inspection machine according to claim 2, characterized in that, The drive assembly (5) includes a planetary gear set (51) and a central shaft (52). The planetary gear set (51) is installed in the cleaning tank (21) and each component rotates in the horizontal direction. The central shaft (52) is rotatably installed in the cleaning tank. The sun gear (512) of the planetary gear set (51) is sleeved on the central shaft (52). Each mounting bracket (3) corresponds to each planetary gear. The mounting bracket (3) is fixedly installed on the planet carrier (511) of the corresponding planetary gear. One of the rotating shafts (32) passes through the planetary gear and is located at the center of the cross-section of the planetary gear. The planet carrier (511) is fixedly installed in the cleaning tank (21). The cleaning tank (21) is also equipped with a first drive member (211) for driving the central shaft (52) to rotate. When the central shaft (52) rotates, the planetary gears are driven to rotate on the fixed planet carrier (511) through the linkage of the sun gear (512).

4. A circuit board quality inspection machine according to claim 3, characterized in that, The clamping assembly (4) includes a guide rail (41) and a lifting frame (42). The lifting frame (42) is telescopically mounted on the guide rail (41) in a vertical direction. A pair of clamping blocks (43) are installed at the bottom of the lifting frame (42) and the clamping blocks (43) are facing the opening of the mounting frame (3). A gap is left between the two clamping blocks (43) for placing the circuit board. An elastic element is provided between the two clamping blocks (43) to drive the two clamping blocks (43) to move towards each other. A second driving element is also installed on the mounting frame (3) to drive the two clamping blocks (43) to move away from each other when the lifting frame (42) falls.

5. A circuit board quality inspection machine according to claim 4, characterized in that, The second driving component includes a guide block (34), which is mounted on the top of the mounting bracket (3). The top of the guide block (34) is directly opposite the gap between the two clamping blocks (43), and a first guide surface is provided on the side of the guide block (34) facing the two clamping blocks (43).

6. A circuit board quality inspection machine according to claim 5, characterized in that, The mounting bracket (3) has a first sliding groove (35) extending vertically at the bottom of the mounting opening (31). The mounting bracket (3) has a first push rod (351) slidably mounted in the first sliding groove (35). The top end of the first push rod (351) abuts against the circuit board, and the bottom end of the first push rod (351) protrudes from the mounting bracket (3). The planetary gear set (51) has a top block (53) on its gear ring. The top block (53) has a second guide surface at both ends along the rotation direction of the gear ring. The top block (53) rotates with the gear ring. The bottom end of the first push rod (351) protruding from the mounting bracket (3) is located on the moving path of the top block (53).

7. A circuit board quality inspection machine according to claim 6, characterized in that, The bottom sidewall of the guide block (34) is hinged to the mounting frame (3), and the top end rotates upward in a direction away from the mounting frame (3). The mounting frame (3) has a second sliding groove (36) extending vertically directly below the guide block (34). The mounting frame (3) has a second push rod (361) slidably mounted in the second sliding groove (36). The mounting frame (3) has a third driving member for driving the second push rod (361) to slide with the first push rod (351). The top end of the second push rod (361) abuts against the guide block (34). When the second push rod (361) slides upward, it pushes the guide block (34) to rotate. The second push rod (361) has a reset member for driving the guide block (34) to return to the vertical position after rotation and tilting.

8. A circuit board quality inspection machine according to claim 7, characterized in that, The third driving component is a connecting rod (37). One end of the connecting rod (37) is fixedly connected to the first top rod (351), and the other end is connected to the second top rod (361). The mounting bracket (3) has a clearance groove for the connecting rod to pass through the mounting bracket (3) and connect to the second top rod (361). When the top block (53) drives the first top rod (351) to slide upward, the second top rod (361) slides synchronously through the linkage of the connecting rod (37).

9. A circuit board quality inspection machine according to claim 7, characterized in that, The reset component is a rope (38), one end of which is fixedly connected to the bottom end of the guide block (34), and the other end is fixedly connected to the top end of the second top rod (361).

10. A circuit board quality inspection machine according to claim 4, characterized in that, The lifting frame (42) is provided in pairs, and both lifting frames (42) are slidably installed on the guide rail (41).

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