PCBA board integrated online detection device

Abstract

The application discloses a PCBA integrated online detection device, which adopts two groups of vertically intersected feeding conveyors to alternately supply materials to the same detection unit, doubles the feeding speed, makes up for the production capacity gap caused by the slow front-end assembly speed compared with the detection speed, greatly improves the utilization rate of the detection equipment, and saves the equipment investment and the floor area since the two groups of conveyors share the same clamping mechanism and lifting mechanism; an adjusting part is arranged on the lifting mechanism, and through the cooperation of the limiting protrusion, the vertical groove, the arc-shaped groove and the retractable adjusting protrusion, the PCBA board conveyed by one group of conveyors is selectively rotated by 90 degrees in the lifting process, so that the attitudes of the two groups of vertically intersected incoming materials are automatically unified, repeated adjustment of the detection unit is not needed, the control difficulty is reduced, and the docking accuracy is improved; the differential speed conveying cooperates with the "back" type movement of the blocking plate to realize orderly release one by one, stacking confusion is avoided, the whole detection line has high automation degree, and the detection precision and efficiency are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of PCBA board production and testing technology, specifically to an integrated online testing device for PCBA boards. Background Technology

[0002] After the initial processes of surface mounting, insertion, and soldering are completed, PCBA (Printed Circuit Board Assembly) requires comprehensive electrical performance testing to ensure product quality. In mass production, PCBA testing typically employs online automated testing equipment, which continuously transports the PCBA boards to be tested to the testing station via a conveyor belt.

[0003] However, existing online detection devices still have the following significant shortcomings in practical applications: First, the assembly speed of front-end PCBA boards (such as the output speed of pick-and-place machines and insertion machines) is usually much lower than the testing speed of back-end testing equipment, resulting in the testing equipment being idle or in standby mode most of the time, leading to low equipment utilization. To solve this problem, some production lines use multiple sets of feeding conveyor belts to supply materials to the same testing equipment. However, in actual layout, due to the limited space of the production workshop, multiple conveyor belts are usually set up in parallel, occupying a large area. Moreover, each set of conveyor belts requires an independent clamping mechanism and lifting mechanism, resulting in high equipment investment costs.

[0004] Secondly, when two sets of vertically intersecting conveyor belts supply materials to the same testing equipment, the PCBA boards conveyed on them will have a 90° orientation deviation due to the perpendicular conveying directions of the two conveyor belts. If the PCBA boards from the two conveyor belts are directly fed into the testing station with different orientations, the testing equipment needs to repeatedly adjust the docking angle of the testing probes according to the different incoming material orientations. This not only increases the control difficulty but also easily leads to misalignment of the testing points between the testing equipment and the PCBA boards, affecting the accuracy of the testing results.

[0005] Third, when the existing feeding conveyor belt is continuously feeding materials, PCBA boards tend to stack or connect end to end on the conveyor belt, causing multiple PCBA boards to rush into the lifting mechanism at the same time, resulting in feeding chaos and affecting the orderly conduct of subsequent clamping and testing.

[0006] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated online inspection device for PCBA boards to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: An integrated online inspection device for PCBA boards includes an inspection box, an inspection unit disposed within the inspection box, and a feeding unit disposed on one side of the inspection unit. The inspection box has a feeding port on the side near the feeding unit. The feeding unit includes: A feeding conveyor belt, installed at the feeding port, is used to transport PCBA boards to be inspected to the inspection unit; A clamping mechanism is provided at the loading port to clamp and transfer the PCBA board conveyed by the loading conveyor belt to the detection unit. A lifting mechanism is disposed between the feeding conveyor belt and the feeding port, and is used to lift the PCBA board to be inspected conveyed by the feeding conveyor belt to a predetermined height so that it can be clamped by the clamping mechanism; The feeding conveyor belt consists of two sets of vertically intersecting conveyor belts, and the lifting mechanism is located at the intersection of the two sets of conveyor belts to lift the PCBA boards conveyed by the two sets of conveyor belts respectively. The lifting mechanism is also equipped with an adjustment section, which is used to rotate one of the PCBA boards conveyed by the conveyor belts by a predetermined angle during the lifting process, so that the PCBA boards conveyed by the two conveyor belts are clamped by the clamping mechanism in the same posture.

[0008] Preferably, the adjustment unit includes: The adjusting cylinder is hollow and is fixed to the lower end of the lifting plate of the lifting mechanism and is concentric with it. The telescopic end of the lifting component is slidably disposed in the adjusting cylinder and abuts against the lifting plate. The outer cylinder is fixedly mounted on the lifting frame of the lifting mechanism and coaxially sleeved outside the adjusting cylinder; A limiting protrusion is fixedly installed on the upper end of the outer wall of the adjusting cylinder; An adjustment groove is formed on the inner wall of the outer cylinder, and the limiting protrusion is slidably disposed within the adjustment groove; The adjustment groove includes a vertical groove and an arc-shaped groove, and the arc-shaped groove has a rotation angle of 90 degrees.

[0009] Preferably, the inlet of the vertical groove is provided with a retractable adjustable protrusion, which is driven by a cylinder; When the adjusting protrusion extends, it closes the entrance to the vertical groove, forcing the limiting protrusion into the arc-shaped groove, causing the lifting plate to rotate 90 degrees during the upward movement. When the adjusting protrusion retracts, the limiting protrusion enters the vertical groove, and the lifting plate does not rotate.

[0010] Preferably, one of the two sets of feeding conveyor belts is provided with an interval transmission mechanism. The action signal of the interval transmission mechanism is linked to the cylinder that drives the adjusting protrusion. When the feeding conveyor belt of this set is conveying PCBA boards, the cylinder drives the adjusting protrusion to extend.

[0011] Preferably, each set of the feeding conveyor belts includes two conveyor belts, with the conveyor belt on the side closer to the lifting mechanism rotating faster than the conveyor belt on the other side, and the faster conveyor belt is provided with the interval conveying mechanism for conveying PCBA boards one by one to the lifting mechanism.

[0012] Preferably, the interval transmission mechanism includes: A baffle plate is disposed on the conveyor belt, and sliders are provided at both ends of the baffle plate; A support plate is fixedly mounted on the mounting plate of the conveyor belt, and the support plate is provided with a loop groove for guiding the slider to move in a "U" shape; A drive gear is rotatably mounted on the slider; A rack plate is disposed on the bearing plate along the path of the loop groove and meshes with the power gear; A miniature rotary motor is disposed inside the slider and is used to drive the power gear to rotate.

[0013] Preferably, the clamping mechanism includes: A clamping frame is positioned directly above the lifting mechanism; Two sets of clamping arms are symmetrically and slidably mounted on the clamping frame; A telescopic component is disposed between the two sets of clamping arms to synchronously drive the two sets of clamping arms to move towards or away from each other; A movable component, disposed on the detection box, is used to drive the clamping frame to move horizontally toward the detection unit; A lifting component is disposed between the clamping frame and the moving component, and is used to drive the clamping arm to rise and fall.

[0014] Preferably, the telescopic member includes: Two sets of telescopic racks are respectively connected to two sets of clamping arms, and the two sets of telescopic racks are arranged obliquely symmetrically. The telescopic gear is rotatably mounted inside the clamping frame and simultaneously meshes with two sets of telescopic racks.

[0015] Preferably, it also includes a recycling unit, which is located on the side of the detection unit away from the feeding unit, for recycling PCBA boards that fail the detection; The recycling unit includes a recycling rack, a recycling platform that is slidably mounted on the recycling rack via a sliding component, and a recycling frame disposed within the recycling rack. The recycling frame has a storage slot for stacking and placing defective PCBA boards.

[0016] Preferably, the detection unit includes a detection table, two sets of detection conveyor belts disposed on the detection table, and detection equipment slidably disposed within the detection box; The spacing between the two sets of detection conveyor belts is adjustable to accommodate PCBA boards of different sizes.

[0017] Compared with the prior art, the beneficial effects of the present invention are: (1) Significantly improve the utilization rate of testing equipment: The present invention uses two sets of vertically intersecting feeding conveyors to alternately feed materials to the same testing unit. By using the dual-channel cross feeding method, the feeding speed of the testing equipment is doubled, which effectively makes up for the production capacity gap where the front-end PCBA board assembly speed is slower than the testing speed, and greatly improves the utilization rate and working efficiency of the testing equipment.

[0018] (2) Save equipment investment costs: The two sets of vertically intersecting feeding conveyor belts of the present invention share the same set of clamping and lifting mechanisms, eliminating the need to equip each set of conveyor belts with separate clamping and lifting devices. At the same time, the vertically intersecting arrangement saves more workshop floor space than the parallel arrangement, thereby significantly reducing the equipment investment cost and space cost of the automated testing production line.

[0019] (3) Automatic uniformity of incoming material posture: The lifting mechanism of the present invention is provided with an adjustment part. Through the cooperation of the limiting protrusion, the adjustment groove (vertical groove and arc groove) and the retractable adjustment protrusion, the PCBA board can be selectively rotated by 90° during the lifting process. This ensures that the two PCBA boards that are vertically and cross each other are held in the same posture by the clamping mechanism. The detection unit does not need to make adaptive adjustments according to different incoming material directions, which reduces the difficulty of control and improves the accuracy and reliability of detection docking.

[0020] (4) Orderly material supply and prevention of stacking: The present invention adopts a differential speed design between the front and rear sections of each set of feeding conveyor belts (the conveyor belt on the side closer to the lifting mechanism rotates faster than the other side), and cooperates with the "return" movement of the baffle plate of the interval transmission mechanism to realize the orderly release of PCBA boards one by one, effectively avoiding the stacking or end-to-end adhesion of PCBA boards during the conveying process, ensuring the stability of the feeding rhythm and the orderly progress of the clamping process.

[0021] (5) Dual-channel linkage control and high level of intelligence: The present invention links the action signal of the interval transmission mechanism on one set of feeding conveyor belts with the cylinder that drives the adjustment protrusion. When the conveyor belts feed material, the adjustment protrusion automatically extends, forcing the lifting plate to rotate 90° during the rising process; the other set of conveyor belts does not rotate when feeding material, realizing the automatic identification and posture correction of different material directions. No additional sensors and independent control system are required. The structure is simple and the reliability is high.

[0022] (6) Centering and clamping to improve transfer accuracy: The clamping mechanism of the present invention achieves synchronous opposite movement of two sets of clamping arms through the meshing of telescopic rack and telescopic gear. While clamping the PCBA board, it automatically completes centering and correction, ensuring that the PCBA board is transferred to the detection unit in an accurate posture, further improving the accuracy of detection and alignment.

[0023] (7) Automated recycling of defective products: The present invention uses the sliding component of the recycling unit to move the recycling platform up and down, automatically stacking and storing the defective PCBA boards in the storage slot of the recycling frame, realizing the orderly recycling of defective products, facilitating centralized processing, and improving the automation level of the entire production line. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a side view of the feeding unit of the present invention; Figure 4 This is a side sectional view of the adjustment part of the present invention; Figure 5 This is a perspective view of the feeding unit of the present invention; Figure 6 This is an overall structural diagram of the detection unit of the present invention; Figure 7 This is an overall structural diagram of the recycling unit of the present invention; Figure 8 This is an internal sectional view of the clamping frame of the present invention; Figure 9 This is a cross-sectional view of the blocking interval transmission mechanism of the present invention; Figure 10 for Figure 4 Enlarged view of point A in the middle.

[0025] Reference numerals: 1-Inspection box; 11-Feeding port; 2-Inspection unit; 21-Inspection table; 22-Inspection conveyor belt; 23-Inspection equipment; 3-Feeding unit; 31-Feeding conveyor belt; 32-Clamping mechanism; 321-Clamping frame; 322-Clamping arm; 323-Telescopic component; 3231-Telescopic rack; 3232-Telescopic gear; 3233-Micro motor; 324-Moving component; 325-Lifting component; 3251-Lifting plate; 3252-Lifting cylinder; 33-Lifting... Lifting mechanism; 331-Lifting frame; 332-Lifting plate; 333-Lifting component; 334-Adjusting part; 3341-Adjusting cylinder; 3342-Outer cylinder; 3343-Limiting protrusion; 3344-Adjusting groove; 33441-Vertical groove; 33442-Arc groove; 3345-Adjusting protrusion; 34-Interval transmission mechanism; 341-Blocking plate; 342-Bearing plate; 343-Return groove; 344-Power gear; 345-Rack plate; 346-Slider; 4-Recovery unit. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-10 This invention provides a technical solution: an integrated online inspection device for PCBA boards, comprising: Test box 1; The detection unit 2 is located inside the detection box 1 and is used to perform performance testing on the PCBA board; The feeding unit 3 is located on one side of the detection unit 2 and is used to feed PCBA boards to the detection unit 2. The recycling unit 4 and the detection unit 2 are located on the side away from the feeding unit 3, and are used to recycle PCBA boards that fail the detection by the detection unit 2. The testing box 1 has a feeding port 11 on the side near the feeding unit 3, which is used for the PCBA board on the feeding unit 3 to enter the testing unit 2 inside the testing box 1; The feeding unit 3 includes: The feeding conveyor belt 31 is installed at the feeding port 11 of the testing box 1 and is used to transport the PCBA board to be tested to the testing unit 2. The clamping mechanism 32 is set on the feeding conveyor belt 31 at the feeding port 11 and is used to clamp the PCBA board conveyed on the feeding conveyor belt 31 to dock with the detection unit 2. The lifting mechanism 33 is located between the feeding conveyor belt 31 and the feeding port 11. The feeding conveyor belt 31 transports the PCBA board to be inspected to the lifting mechanism 33. The lifting mechanism 33 lifts the PCBA board to be inspected so as to cooperate with the clamping mechanism 32 to clamp and transfer the PCBA board to be inspected. The feeding conveyor belt 31 includes two conveyor belts. The conveyor belt closer to the lifting mechanism 33 rotates faster than the other conveyor belt. The faster conveyor belt is equipped with an interval conveyor mechanism 34, which is used to feed the PCBA boards to be tested on the feeding conveyor belt 31 one by one to the lifting mechanism 33. The feeding conveyor belt 31 consists of two sets of vertically arranged conveyor belts, and the lifting mechanism 33 is located at the intersection of the two sets of vertically arranged conveyor belts, which can lift the PCBA boards to be tested conveyed by the two sets of conveyor belts. The vertical cross arrangement of the feeding conveyor belts 31 is to ensure that, during actual testing, the installation speed of components on the PCBA board at the front end is much lower than the testing speed. If one set of feeding conveyor belts 31 corresponds to one set of testing units 2, the actual working efficiency of testing units 2 will be low. Therefore, two sets of feeding conveyor belts 31 corresponding to one testing unit 2 can increase the working efficiency of testing units 2 and save on actual production costs. The interval transmission mechanism 34 includes: A barrier plate 341 is disposed on the conveyor belt, and sliders 346 are disposed at both ends of the barrier plate 341; The power component is mounted on the mounting plates on both sides of the conveyor belt and is used to drive the slider 346 to perform a "return" motion so as to realize the "return" movement of the barrier plate 341. The power component includes: The support plate 342 is fixedly mounted on the mounting plate of the conveyor belt, and the support plate 342 is provided with a loop groove 343 for the slider 346 to move in a loop shape; The power gear 344 is rotatably disposed on the side of the slider 346 away from the barrier plate 341; The rack plate 345 is configured in a U-shape on the support plate 342, and the tooth grooves on the rack plate 345 mesh with the power gear 344; A miniature rotary motor is installed inside the slider 346 to drive the power gear 344 to rotate; When PCBA boards to be inspected are loaded one by one, due to the differential speed setting of the two conveyor belts, when the previous PCBA board to be inspected moves to the faster conveyor belt, it will be temporarily stopped on the faster conveyor belt due to the obstruction of the barrier plate 341. At this time, the barrier plate 341 will move upward first. The PCBA board to be inspected will move towards the lifting mechanism 33 on the conveyor belt without obstruction. Due to the speed difference between the two conveyor belts, there will be a movement gap between the two PCBA boards to be inspected during the transmission process. When the barrier plate 341 moves to the conveyor belt again to fit, it will block the next PCBA board to be inspected from moving forward and push it to the conveyor belt entry side. The previous PCBA board to be inspected will enter the lifting mechanism 33. After the lifting mechanism 33 resets, the barrier plate 341 will move back again. The interval transmission mechanism 34 is more suitable for two sets of cross-vertical feeding conveyor belts 31. In this case, feeding can be carried out by feeding in a cross-shaped manner, that is, the two sets of interval transmission mechanisms 34 work in turn to achieve cross feeding. This is because the detection efficiency is much greater than the component installation on the PCBA board to be detected at the front end. When the feeding conveyor belt 31 is a set, the interval transmission mechanism 34 may not be needed. In addition, the two sets of feeding conveyor belts 31 are arranged vertically on the same plane, which allows them to share a set of clamping mechanism 32 and lifting mechanism 33, thereby further saving the cost of the assembly line operation. The lifting mechanism 33 includes: The lifting frame 331 is fixedly installed on the unloading side of the feeding conveyor belt 31; A lifting plate 332 is disposed in the middle of the lifting frame 331; A lifting component 333 is disposed on the lifting frame 331 and is used to drive the lifting plate 332 to slide up and down. The lifting component 333 can be configured as a lifting cylinder, and its telescopic end is connected to the lifting plate 332. When the feeding conveyor belts 31 are arranged in two sets and cross each other, the lifting mechanism 33 can be set at the crossover point. Since the feeding conveyor belts 31 are arranged in a crossover, when one set of feeding conveyor belts 31 transmits the PCBA board to be tested to the lifting plate 332, its shape will have a 90-degree rotational deviation from the PCBA board to be tested transmitted by the other set. Therefore, it is necessary to rotate the PCBA board to be tested transmitted by one set of conveyor belts by 90 degrees to ensure that the shape of the PCBA board to be tested held and transported to the detection unit 2 by the clamping mechanism 32 is consistent, so that the detection unit 2 does not need to be adjusted. Therefore, the lifting member 333 is provided with an adjustment part 334, which is used to rotate the PCBA board to be tested transmitted by either set of feeding conveyor belts 31 by 90 degrees during the upward lifting process. When the adjustment part 334 is provided, the lifting plate 332 is circular, and the adjustment part 334 includes: The hollow adjusting cylinder 3341 is fixedly installed at the lower end of the lifting plate 332 and is concentric with the lifting plate 332. The telescopic end of the lifting cylinder is slidably installed inside the adjusting cylinder 3341, and the telescopic end of the lifting cylinder abuts against the lifting plate 332. The outer cylinder 3342 is fixedly mounted on the lifting frame 331 and coaxially sleeved on the adjusting cylinder 3341; The limiting protrusion 3343 is fixedly disposed on the upper end of the outer wall of the adjusting cylinder 3341; An adjusting groove 3344 is formed on the inner wall of the outer cylinder 3342. The limiting protrusion 3343 slides within the adjusting groove 3344. The adjusting groove 3344 includes a vertical groove 33441 and an arc-shaped groove 33442. The vertical groove 33441 and the arc-shaped groove 33442 are... Figure 10 As shown, their starting points are consistent, and the arc-shaped groove 33442 rotates at an angle of 90 degrees. An adjustment protrusion 3345 is provided at the downward sliding outlet of the vertical groove 33441. The adjustment protrusion 3345 is extended and retracted by a cylinder. When the lifting plate 332 does not need to rotate, the adjusting protrusion 3345 will retract and move outward from the vertical groove 33441. When the lifting cylinder drives the lifting plate 332 to move upward, its limiting protrusion 3343 will move synchronously. At the same time, under the action of inertia, the limiting protrusion 3343 will slide into the vertical groove 33441, so that the lifting plate 332 does not rotate during the upward process. When the lifting plate 332 needs to be rotated, the adjusting protrusion 3345 will extend into the vertical groove 33441 under the action of the cylinder to close the inlet of the vertical groove 33441. Thus, when the lifting rod drives the lifting plate 332 to move upward, the limiting protrusion 3343 is forced to enter the arc groove 33442 only, so that the lifting plate 332 can rotate 90 degrees when it rises. The cylinder that drives the adjustment protrusion 3345 to extend and retract can be activated by the interval transmission mechanism 34. The interval transmission mechanism 34 and the cylinder are linked on one of the two sets of feeding conveyor belts 31. When the interval transmission mechanism 34 is activated, it is marked as the PCBA board to be tested that needs to be rotated. In this way, the cylinder drives the adjustment protrusion 3345 to move. At the same time, after the lifting plate 332 is lowered and reset, the cylinder must also be reset synchronously. The clamping mechanism 32 includes: The clamping frame 321 is positioned directly above the lifting mechanism 33; Two sets of clamping arms 322 are symmetrically arranged on the clamping frame 321, and the clamping arms 322 are slidably arranged on the clamping frame 321; The telescopic component 323 is disposed between the two sets of clamping arms 322 and is used to synchronously drive the two sets of clamping arms 322 to move synchronously from both sides of the PCBA board to be tested towards the center to clamp it. The clamping arm 322, through the extension member 323, can clamp and transfer PCBA boards of different sizes and models to be tested. The movable component 324 is disposed in the detection box 1 and is used to drive the clamping frame 321 to move towards the detection unit 2 to realize the transfer of the PCBA board to be detected; A lifting component 325 is disposed between the clamping frame 321 and the moving component 324, and is used to drive the clamping arm 322 to adjust its height. The telescopic component 323 includes: Two sets of telescopic racks 3231, arranged obliquely and symmetrically, are connected to two sets of clamping arms 322 respectively; The telescopic gear 3232 is rotatably disposed within the clamping frame 321, and its rotation center is the oblique symmetry center of the two sets of telescopic gears 3232. The telescopic gear 3232 is meshed with the two sets of telescopic racks 3231. The telescopic gear 3232 is driven to rotate by a micro motor 3233 disposed within the clamping frame 321. Additionally, the lifting component 325 includes: A lifting plate 3251 is connected to the moving part 324. A lifting cylinder 3252 is fixedly mounted on the lifting plate 3251, and its telescopic end is connected to the clamping frame 321. Finally, the movable component 324 is configured as an electromagnetic slider fixedly mounted on the lifting plate 3251 and an electromagnetic slide rail fixedly mounted on the detection box 1, wherein the electromagnetic slider slides within the electromagnetic slide rail. During transfer, after the PCBA board to be inspected is transferred from the loading conveyor belt 31 to the lifting plate 332, the lifting plate 332 raises the PCBA board to a height lower than the lower end of the clamping arm 322. This ensures the edge of the PCBA board is outside the range of the lifting plate 332. The lifting component 325 then lowers the clamping frame 321 until the clamping arm 322 is below the PCBA board. Then, the telescopic component 323 retracts the clamping arm 322. This process allows the PCBA board to be inspected to be transferred. The PCBA board is centered to keep the PCBA board to be tested aligned with the testing unit 2 for easy transfer and docking. Then, the lifting component 325 moves the clamping arm 322 upward, so that the PCBA board to be tested is carried on the clamping arm 322 until it is lifted off the lifting plate 332 and raised to the transfer height aligned with the testing unit 2. Finally, the moving component 324 moves the whole towards the testing unit 2 until it is fully docked with the testing unit 2, realizing the transfer of a single PCBA board to be tested. Then it is reset and the next PCBA board to be tested is transferred. The detection unit 2 includes: The testing station 21 is installed inside the testing box 1; Two sets of inspection conveyor belts 22 are set on the inspection table 21 to transport the PCBA boards to be inspected from the lifting mechanism 33 to the inspection station; The testing equipment 23 is set inside the testing box 1 and is driven to slide up and down by a cylinder. When the PCBA board to be tested moves to the testing station, the cylinder drives it to move down onto the PCBA board to be tested and perform docking testing. In addition, in order to accommodate PCBA boards of different sizes and models to be tested, the two sets of testing conveyor belts 22 are sliding, which is achieved by electromagnetic or transmission rods, in conjunction with the aforementioned telescopic component 323, thereby increasing the application range of the testing device.

[0028] Finally, the recycling unit 4 includes: The recycling rack 41 is connected to the detection unit 2 via a conveyor belt; The recycling table 42 is slidably mounted on the recycling rack 41 via a sliding component 43, wherein the sliding component 43 is configured as a conveyor belt; The sliding component 43 is configured to electrically drive the screw to rotate, thereby enabling the recycling platform 42 to move up and down. A recycling box 44 is set inside the recycling rack 41. The recycling box 44 has a storage slot 45 for placing PCBA boards that fail the test. When the PCBA board fails the test in the detection unit 2, the conveyor belt transports the failed PCBA board to the recycling table 42. The sliding component 43 drives the recycling table 42 to move downward. The recycling table 42 then transports the failed PCBA board to the storage slot 45 in the recycling frame 44 for storage. These failed PCBA boards are stacked in the recycling frame 44 until it is full, at which point the recycling frame 44 is replaced. Meanwhile, the qualified PCBA boards are transported to the next station via the recycling table 42.

[0029] Workflow steps: S1: Dual-channel differential speed feeding Two sets of vertically intersecting feeding conveyor belts 31 respectively transport the PCBA board to be inspected to the lifting mechanism 33; Each set of feeding conveyor belts 31 adopts a differential speed design with a fast front and a slow rear, so that the PCBA boards gradually increase in spacing during the conveying process. One of the feeding conveyor belts 31 is equipped with an interval transmission mechanism 34. Through the "U"-shaped movement of the baffle plate 341, the PCBA boards are released one by one to ensure that only one PCBA board enters the lifting mechanism 33 at a time.

[0030] S2: Cross-rotating promotion The conveying directions of the two sets of feeding conveyor belts 31 are perpendicular to each other, and the lifting mechanism 33 is set at the intersection of the two sets of conveyor belts; The two sets of feeding conveyor belts 31 work alternately in sequence, that is, after one set conveys one PCBA board, the other set conveys another one, realizing cross feeding to match the detection efficiency of the detection unit 2 and avoid the detection equipment being idle.

[0031] S3: Attitude Correction and 90° Rotation The PCBA board is conveyed to the lifting plate 332 of the lifting mechanism 33; Lifting component 333 drives lifting plate 332 to move upward; If the current PCBA board comes from a set of conveyor belts without the interval transmission mechanism 34: the adjusting protrusion 3345 is in the retracted state, the limiting protrusion 3343 slides along the vertical groove 33441, the lifting plate 332 rises vertically, and the PCBA board posture remains unchanged. If the current PCBA board comes from a set of conveyor belts equipped with an interval transmission mechanism 34: when the interval transmission mechanism 34 is activated, the cylinder is triggered synchronously, driving the adjusting protrusion 3345 to extend, closing the entrance of the vertical groove 33441, forcing the limiting protrusion 3343 into the arc groove 33442, so that the lifting plate 332 drives the PCBA board to rotate 90° during the upward process. By selectively rotating as described above, the two sets of PCBA boards transported from different directions maintain a completely consistent posture when they reach the clamping height.

[0032] S4: Clamping and centering mechanism The lifting plate 332 lifts the PCBA board to the working height of the clamping arm 322 of the clamping mechanism 32, which is lower than the lower end of the clamping arm; The lifting component 325 drives the clamping frame 321 to descend, causing the two sets of clamping arms 322 to move to the bottom of the PCBA board; When the telescopic component 323 is working, its telescopic gear 3232 drives the two sets of telescopic racks 3231 to move synchronously towards each other, so that the two sets of clamping arms 322 move from both sides of the PCBA board toward the center, completing the clamping of the PCBA board. At the same time, the clamping process can automatically center and position the PCBA board. The lifting component 325 moves again, causing the clamping frame 321 to rise, so that the PCBA board is separated from the lifting plate 332 and rises to the transfer height where it docks with the detection unit 2.

[0033] S5: Horizontal transfer to the detection unit The moving part 324 drives the clamping frame 321 to move horizontally towards the detection unit 2, and transports the PCBA board to the entrance of the detection conveyor belt 22 of the detection unit 2; The clamping mechanism 32 releases the PCBA board, and the inspection conveyor belt 22 transports the PCBA board to the inspection station.

[0034] S6: Online Detection The testing equipment 23 moves downward under the drive of the cylinder, docks with the PCBA board on the testing station and performs performance testing; After the test is completed, the testing equipment 23 is reset.

[0035] S7: Post-detection diversion If the test result is qualified: the inspection conveyor belt 22 will continue to transport the PCBA board forward to the next station, such as the unloading or subsequent process; If the test result is unqualified: the test conveyor belt 22 transports the unqualified PCBA board to the recycling unit 4. After the recycling table 42 receives it, the sliding component 43 drives the recycling table 42 to move down and store the unqualified PCBA board in the storage slot 45 of the recycling frame 44 for stacking.

[0036] S8: Reset and Loop The clamping mechanism 32 is reset to its initial position, the lifting mechanism 33 is reset and the lifting plate is lowered, the adjustment protrusion is retracted, and the next PCBA board is awaited. Two sets of feeding conveyor belts 31 alternately feed materials according to the detection rhythm, repeating the above steps S1 to S7 to achieve continuous online detection of PCBA boards.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated online inspection device for PCBA boards, comprising an inspection box (1), an inspection unit (2) disposed within the inspection box (1), and a feeding unit (3) disposed on one side of the inspection unit (2), wherein the inspection box (1) has a feeding port (11) on the side near the feeding unit (3), characterized in that, The feeding unit (3) includes: The feeding conveyor belt (31) is installed at the feeding port (11) and is used to feed the PCBA board to be tested to the detection unit (2); The clamping mechanism (32) is located at the feeding port (11) and is used to clamp and transfer the PCBA board conveyed by the feeding conveyor belt (31) to the detection unit (2). The lifting mechanism (33) is located between the feeding conveyor belt (31) and the feeding port (11) to lift the PCBA board to be tested conveyed by the feeding conveyor belt (31) to a predetermined height for clamping by the clamping mechanism (32). The feeding conveyor belt (31) consists of two sets of vertically intersecting conveyor belts. The lifting mechanism (33) is located at the intersection of the two sets of conveyor belts and is used to lift the PCBA boards conveyed by the two sets of conveyor belts respectively. The lifting mechanism (33) is also provided with an adjustment part (334) for rotating one of the PCBA boards conveyed by the conveyor belts by a predetermined angle during the lifting process, so that the PCBA boards conveyed by the two conveyor belts are clamped by the clamping mechanism (32) in the same posture.

2. The integrated online inspection device for PCBA boards according to claim 1, characterized in that, The adjustment unit (334) includes: The adjusting cylinder (3341) is hollow and is fixed to the lower end of the lifting plate (332) of the lifting mechanism (33) and is concentric with it. The telescopic end of the lifting member (333) is slidably disposed in the adjusting cylinder (3341) and abuts against the lifting plate (332). The outer cylinder (3342) is fixedly mounted on the lifting frame (331) of the lifting mechanism (33) and coaxially sleeved outside the adjusting cylinder (3341); A limiting protrusion (3343) is fixedly disposed on the upper end of the outer wall of the adjusting cylinder (3341); An adjustment groove (3344) is formed on the inner wall of the outer cylinder (3342), and the limiting protrusion (3343) is slidably disposed in the adjustment groove (3344); The adjustment groove (3344) includes a vertical groove (33441) and an arc-shaped groove (33442), and the rotation angle of the arc-shaped groove (33442) is 90 degrees.

3. The integrated online inspection device for PCBA boards according to claim 2, characterized in that, The vertical groove (33441) is provided with a retractable adjustable protrusion (3345) at its entrance, and the adjustable protrusion (3345) is driven by a cylinder. When the adjusting protrusion (3345) extends, it closes the entrance of the vertical groove (33441), forcing the limiting protrusion (3343) into the arc groove (33442), causing the lifting plate (332) to rotate 90 degrees during the upward movement; When the adjusting protrusion (3345) retracts, the limiting protrusion (3343) enters the vertical groove (33441), and the lifting plate (332) does not rotate.

4. The integrated online inspection device for PCBA boards according to claim 3, characterized in that, Both sets of feeding conveyor belts (31) are equipped with interval transmission mechanisms (34). The action signal of one set of interval transmission mechanisms (34) is linked with the cylinder that drives the adjustment protrusion (3345). When the feeding conveyor belt (31) of this set conveys PCBA board, the cylinder drives the adjustment protrusion (3345) to extend.

5. The integrated online inspection device for PCBA boards according to claim 4, characterized in that, Each set of the feeding conveyor belts (31) includes two conveyor belts. The conveyor belt on the side closer to the lifting mechanism (33) rotates faster than the conveyor belt on the other side. The faster conveyor belt is equipped with the interval conveyor mechanism (34) for conveying PCBA boards one by one to the lifting mechanism (33).

6. The integrated online inspection device for PCBA boards according to claim 5, characterized in that, The interval transmission mechanism (34) includes: A baffle plate (341) is disposed on the conveyor belt, and sliders (346) are provided at both ends of the baffle plate. The support plate (342) is fixedly mounted on the mounting plate of the conveyor belt. The support plate (342) has a groove (343) for guiding the slider (346) to move in a "U" shape. A power gear (344) is rotatably mounted on the slider (346); A rack plate (345) is disposed on the bearing plate (342) along the path of the groove (343) and meshes with the power gear (344); A miniature rotary motor is disposed inside the slider (346) and is used to drive the power gear (344) to rotate.

7. The integrated online inspection device for PCBA boards according to claim 1, characterized in that, The clamping mechanism (32) includes: The clamping frame (321) is positioned directly above the lifting mechanism (33); Two sets of clamping arms (322) are symmetrically slidably disposed on the clamping frame (321); The telescopic component (323) is disposed between the two sets of clamping arms (322) and is used to synchronously drive the two sets of clamping arms (322) to move towards or away from each other; A movable component (324) is disposed on the detection box (1) and is used to drive the clamping frame (321) to move horizontally toward the detection unit (2); The lifting component (325) is disposed between the clamping frame (321) and the moving component (324) and is used to drive the clamping arm (322) to rise and fall.

8. The integrated online inspection device for PCBA boards according to claim 7, characterized in that, The telescopic component (323) includes: Two sets of telescopic racks (3231) are respectively connected to two sets of clamping arms (322), and the two sets of telescopic racks (3231) are arranged obliquely symmetrically; The telescopic gear (3232) is rotatably disposed within the clamping frame (321) and simultaneously meshes with the two sets of telescopic racks (3231).

9. The integrated online inspection device for PCBA boards according to claim 1, characterized in that, It also includes a recycling unit (4), which is located on the side of the detection unit (2) away from the feeding unit (3) for recycling PCBA boards that fail the inspection; The recycling unit (4) includes a recycling rack (41), a recycling platform (42) that is slidably mounted on the recycling rack (41) via a sliding component (43), and a recycling frame (44) disposed within the recycling rack (41). The recycling frame (44) has a storage slot (45) for stacking and placing unqualified PCBA boards.

10. The integrated online inspection device for PCBA boards according to claim 1, characterized in that, The detection unit (2) includes a detection table (21), two sets of detection conveyor belts (22) disposed on the detection table (21), and a detection device (23) slidably disposed in the detection box (1). The spacing between the two sets of detection conveyor belts (22) is adjustable to accommodate PCBA boards of different sizes.

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