A screening machine for cooperative PCBA detection

Abstract

The application provides a screening machine for cooperative PCBA detection, and particularly relates to the technical field of screening machines, which comprises a screening machine body, two supporting frames are symmetrically arranged on the top of the screening machine body, a baffle is hingedly connected to the two supporting frames, two adjusting rails are symmetrically arranged on the top of the screening machine body, and a screening frame is arranged on each adjusting rail. The transfer device comprises a combined bracket which is arranged in a position corresponding to the screening frame. After the NG plate is screened out, the active transfer mechanism can automatically send the NG plate away from the screening area, so that the normal screening operation of the screening area is not affected by manual removal of the NG plate by the staff. Compared with the prior art, after the NG plate is full, manual stopping and manual removal of the NG plate are usually required, and the equipment is in an idle state during this period. However, the present application automatically translates the bearing plate to remove the NG plate, so that the screening operation can continuously receive new NG plates without waiting for manual operation, the downtime is significantly reduced, and the continuous operation capacity of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The application provides a screening machine for cooperative PCBA detection, and particularly relates to the technical field of screening machines. BACKGROUND

[0002] The screening machine for PCBA detection, also known as an NG screening machine, is a device for automatically detecting and classifying products, widely used in the electronic manufacturing industry. Its main function is to detect the quality of PCBs and printed circuit boards (PCBAs) and automatically separate the qualified (OK) and unqualified (NG) products according to the preset standards, thereby improving the consistency of production efficiency and product quality. When screening, it receives detection signals from the previous detection end (AOI visual detection), uses a gradually moving screening frame to stop and buffer the NG boards on the frame body, and the OK boards are directly passed to the next step.

[0003] In patent No. CN213558561U, a PCB screening machine is disclosed. The screening machine detects in advance through a front-end machine and sends an NG signal to the screening mechanism to make the screening mechanism rise and hold the product to complete the screening. The screening efficiency is high, the labor intensity is low, the labor cost is low, the defective product rate is high, the raw material waste is low, the raw material cost is low, and the use requirements are effectively met.

[0004] The screening machine in the above-mentioned comparative document (prior art) can well realize the screening of OK and NG boards, but still has deficiencies in actual application:

[0005] In the prior art, NG boards are usually temporarily stored on the screening frame. When the screening frame reaches the preset carrying capacity, an alarm device is needed to prompt the worker to intervene. At this time, the operator needs to perform a shutdown operation and manually remove the NG boards one by one. During this process, the screening machine is in a non-running state, which causes the screening link to be interrupted due to shutdown processing of NG boards, resulting in a decrease in effective processing capacity per unit of time and a decrease in production efficiency. At the same time, it causes the interruption of material supply in the subsequent processing link, causing local bottlenecks and overall production rhythm imbalance in the production line. The core problem lies in the existing NG board processing method, which fails to realize dynamic management of the carrying state of the screening frame and automatic removal of the NG board, resulting in limited device utilization and production line coordination efficiency.

[0006] Therefore, the present application proposes a screening machine for cooperative PCBA detection to make up for and improve the shortcomings of the prior art. SUMMARY

[0007] In view of the defects of the prior art, the present application provides a screening machine for cooperative PCBA detection, which can effectively solve the related technical problems proposed in the background art.

[0008] To achieve the above purpose, the present application is realized by the following technical solutions:

[0009] The application discloses a screening machine for cooperative PCBA detection, which comprises a screening machine body, two supporting frames are symmetrically arranged on the top of the screening machine body, a baffle is hingedly connected to the two supporting frames, two adjusting rails are symmetrically arranged on the top of the screening machine body, screening frames are arranged on the two adjusting rails respectively, and evenly distributed hanging teeth are arranged on the screening frames, and an adjusting component is arranged between the bottoms of the two adjusting rails, characterized in that the two supporting frames and the baffle form a screening area for PCBA screening on the top of the screening machine body, and a feeding channel and a discharging channel are arranged on the two sides of the screening area in the transverse direction.

[0010] The active transfer mechanism is arranged on the supporting frame and located on one side of the feeding channel, and comprises a transfer device and an adjusting device.

[0011] The transfer device comprises a combined bracket which is arranged corresponding to the position of the screening frame, a driving device is arranged between the top of the combined bracket and the supporting frame and in the transverse direction of the screening area, the combined bracket is located directly below the driving device, a lifting device is arranged between the driving device and the combined bracket, a steering device for lifting the device and controlling the steering of the combined bracket is further arranged between the lifting device and the driving device, the height of the combined bracket is adjusted through the lifting device, the combined bracket is moved in translation through the driving device, and the screened PCBA is discharged from the screening area.

[0012] The combined bracket is symmetrically arranged in two groups, each group of combined brackets is composed of bearing plates which are arranged at equal intervals from top to bottom, the bearing plates are fixedly connected, the height of each bearing plate when moving downward to the final position corresponds to the height position of the corresponding hanging tooth, and the bearing plate is L-shaped, comprising a vertical part and a horizontal part.

[0013] The adjusting device is used for adjusting the distance between the two groups of combined brackets.

[0014] As preferred, the driving device comprises two symmetrically arranged suspension plates, the two suspension plates are correspondingly fixedly arranged on the outer walls of the two supporting frames away from each other, and the end portions of the two suspension plates away from each other are jointly provided with a driving guide rail, a sliding block is slidingly matched with the driving guide rail, and the lifting device is an electric control telescopic rod.

[0015] As preferred, a rolling body is arranged between the sliding block and the driving guide rail, and the rolling body is a ball or a roller.

[0016] As preferred, dustproof lips are arranged on the two sides of the sliding block, and the dustproof lips are made of elastic rubber material.

[0017] As preferred, an inclined round corner surface is arranged at the end of the horizontal part of the bearing plate, and an anti-static rubber layer is arranged on the top surface of the horizontal part, and the anti-static rubber layer is conductive silica gel.

[0018] As preferred, the adjusting device comprises a slotted plate connected with the lifting device, the bottom of the slotted plate is provided with a limiting slot, the vertical parts of the two bearing plates at the top of the two sets of combined brackets are provided with slot blocks, the two sets of combined brackets are slidably arranged in the limiting slot through the slot blocks, and can only translate along the length direction of the slotted plate, the vertical parts of the two bearing plates at the middle position of the two sets of combined brackets are fixedly provided with nut sleeve blocks, and a bidirectional adjusting screw rod is rotatably arranged between the two nut sleeve blocks and is in threaded connection with the two nut sleeve blocks.

[0019] As preferred, the cross-sectional shape of the limiting slot is T-shaped, and the shape of the slot block is the same as the cross-sectional shape of the limiting slot.

[0020] As preferred, the pitch range of the bidirectional adjusting screw rod is the same as the range of the adjusting component for adjusting the distance between the two screening frames.

[0021] As preferred, the two adjusting rails are further provided with a matching processing mechanism, the matching processing mechanism comprises an external dust collection device, an electric hydraulic rod arranged on the top surface of the adjusting rail close to the delivery channel, a controller arranged on the electric hydraulic rod, a vertical pipe fixedly connected to the telescopic end of the electric hydraulic rod, an external pipe communicatively arranged on one side of the vertical pipe, the external pipe being in communication with the air suction end of the dust collection device, a plurality of array pipes equally distributed from top to bottom and communicatively arranged on the other side of the vertical pipe, a plurality of air inlet nozzles uniformly arranged on the bottom of each array pipe, and each air inlet nozzle corresponding to each hanging tooth at the same side and at the same height.

[0022] As preferred, the matching processing mechanism further comprises a mounting seat, four mounting seats are arranged, two mounting seats at the same side form a group, and the electric hydraulic rod is mounted on the corresponding mounting seat.

[0023] Compared with the known prior art, the technical scheme provided by the application has the following beneficial effects:

[0024] The cooperative PCBA detection screening machine can automatically send the NG plate away from the screening area after the NG plate is screened out, and the normal screening operation of the screening area will not be affected by manual removal of the NG plate by the worker. Compared with the prior art, the NG plate is usually removed manually after being full, and the device is idle during this period. However, the present scheme automatically translates the NG plate away, so that the screening operation can continuously receive new NG plates without waiting for manual operation, significantly reducing downtime and improving the continuous operation capacity of the device.

[0025] With the setting of the adjusting device, the interval of the two groups of combined cradle can be adjusted to adapt to PCBA of different sizes, which not only improves the adaptability of the cradle for NG board, but also improves the practicability of the transfer link;

[0026] The conductive silicone on the horizontal part of the bearing plate contacts the PCBA, which not only improves the stability of the combined cradle holding the PCBA to prevent falling, but also prevents static damage to the selected PCBA, reduces the damage rate of the PCBA, and reduces the screening cost;

[0027] The dust and impurities attached to the surface of the hanging teeth can be effectively removed by the setting of the matching processing mechanism, which avoids the attachment of impurities and dust on the subsequent NG board, reduces the tedious steps of manual dust and impurity removal, and reduces the damage rate of the NG board by removing dust and impurities and reducing the static effect caused by the contact between the NG board and the hanging teeth in the PBCA. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a front perspective view of the present application;

[0029] Figure 2 It is a perspective view of the present application from another angle;

[0030] Figure 3 It is a partial perspective view of the related components at the suspension plate in the present application;

[0031] Figure 4 It is a partial perspective view of the related components at the driving guide rail in the present application;

[0032] Figure 5 It is a partial perspective view of the related components after the combined cradle moves in the present application;

[0033] Figure 6 It is a perspective view of the related components when the combined cradle moves to the final position in the present application;

[0034] Figure 7 It is a partial perspective view of the related components at the grooved plate in the present application;

[0035] Figure 8 It is a perspective view of the present application Figure 6 It is a partial enlarged view of A in the present application;

[0036] Figure 9 It is a partial perspective view of the related components at the electric hydraulic rod in the present application;

[0037] Figure 10 It is a partial perspective view of the related components at the extension end of the electric hydraulic rod in the present application.

[0038] The labels in the diagram represent:

[0039] 1. Screening machine body; 11. Support frame; 12. Screening frame; 121. Hanging teeth; 13. Adjusting rail; 14. Adjusting components;

[0040] Active transfer mechanism: 21. Suspension plate; 22. Drive rail; 23. Slider; 24. Electrically controlled telescopic rod; 25. Combined bracket; 26. Grooved plate; 27. Groove block; 28. Nut sleeve block; 29. ​​Bidirectional adjusting screw;

[0041] Supporting components: 31. Mounting base; 32. Electro-hydraulic rod; 33. Vertical tube; 34. External tube; 35. Array tube; 36. Air inlet. Detailed Implementation

[0042] The present invention will be further described below with reference to embodiments.

[0043] Example 1:

[0044] like Figures 1 to 7 As shown, a screening machine for collaborative PCBA inspection includes a screening machine body 1. Two support frames 11 are symmetrically arranged on the top of the screening machine body 1, and baffles are hinged to the two support frames 11. Two adjusting rails 13 are also symmetrically installed on the top of the screening machine body 1. A conveying device is installed on the side of each adjusting rail 13 that is close to each other; specifically, the conveying device is an anti-static conveyor belt. Screening frames 12 are respectively installed on the two adjusting rails 13, and the screening frames 12 are connected to a lifting structure, which is prior art. The screening frames 12 are provided with evenly distributed hanging teeth 121. An adjusting component 14 for adjusting the distance between the two adjusting rails 13 is provided between their bottoms. Note: All of the above components are prior art. The two support frames 11 and the baffles form a screening area on the top of the screening machine body 1 for screening PCBAs. An inlet channel and an outlet channel are respectively provided on both sides of the screening area in the lateral direction. The baffles prevent dust and impurities from falling onto the PCBAs.

[0045] Note: The horizontal direction of the filter area mentioned above is... Figure 1 The left and right directions shown are also the directions for horizontal transport of PCBA.

[0046] An active transfer mechanism is mounted on the support frame 11 and located on one side of the feed channel, and includes a transfer device and an adjustment device.

[0047] The conveying device comprises a combined bracket 25 arranged corresponding to the position of the screening frame 12, a driving device arranged between the top of the combined bracket 25 and the support frame 11 and along the transverse direction of the screening area, the driving device comprising two symmetrically arranged suspension plates 21, the two suspension plates 21 are correspondingly fixed to the outer walls of the two support frames 11 away from each other, the end portions of the two suspension plates 21 away from each other are jointly provided with a driving guide rail 22, a sliding block 23 is slidingly fitted on the driving guide rail 22, and a rolling body is arranged between the sliding block 23 and the driving guide rail 22, the rolling body is a ball or a roller, so as to reduce the friction between the two, reduce the driving energy consumption, and improve the transmission stability. Dustproof lips are arranged on both sides of the sliding block 23, the dustproof lips are made of elastic rubber material, and the dustproof lips prevent external dust from entering the sliding gap between the sliding block 23 and the driving guide rail 22.

[0048] The combined bracket 25 is located directly below the driving device, and a lifting device is arranged between the driving device and the combined bracket 25, the height of the combined bracket 25 is adjusted through the lifting device, and the lifting device is an electric control telescopic rod 24. The function is that the combined bracket 25 does not hinder the PCBA passing through the conveying device in the initial state. The combined bracket 25 is moved by the driving device to send the screened PCBA out of the screening area.

[0049] And a steering device for steering the combined bracket 25 is arranged between the lifting device and the driving device, the steering device is configured as a servo motor, which is installed at the bottom of the sliding block 23, and the output shaft is fixedly connected to the top of the non- telescopic end of the electric control telescopic rod 24. The combined bracket 25 is symmetrically arranged in two groups, and each group of combined brackets 25 is composed of load-bearing plates arranged equidistantly from top to bottom, the load-bearing plates are fixedly connected, and the height of each load-bearing plate when moving downward to the final position corresponds to the height position of the corresponding toothed hook 121. The load-bearing plate is L-shaped, including a vertical part and a horizontal part. Specifically, the horizontal line of the top surface of the horizontal part of each load-bearing plate is on the same horizontal line as the top surface of the corresponding toothed hook 121. That is, when each load-bearing plate is translated to the position of the toothed hook 121, the top surface of each load-bearing plate is in contact with the bottom surface of the PCBA placed on the top surface of the two toothed hooks 121 at the same height. The end of the horizontal part of the load-bearing plate is provided with an inclined round corner surface, which is convenient for contacting and supporting the PBCA. The top surface of the horizontal part is provided with an anti-static adhesive layer, which is a conductive silicone, which contacts the PCBA. On the one hand, it improves the stability of the combined bracket 25 supporting the PCBA and prevents it from falling. On the other hand, it prevents static electricity from damaging the screened PCBA, reduces the damage rate of the PCBA, and reduces the screening cost.

[0050] Note: the screening machine body 1 is provided with a total controller for controlling the driving device, that is, controlling the opening and closing of the driving guide rail 22. The total controller cooperates with the infrared detector provided on the screening machine body 1 to detect whether the NG plate on the screening frame 12 is full. When the NG plate is full in the screening frame 12, the infrared detector transmits a signal to the total controller, and the total controller automatically starts the driving guide rail 22 to drive the sliding block 23 to translate along the driving guide rail 22; and the total controller controls the extension of the telescopic end of the electric telescopic rod 24 at the same time. In addition, the total controller also controls the opening and closing of the servo motor.

[0051] In use: the detection information of the PCBA, including: NG plate or OK plate, is transmitted to the total controller on the screening machine body 1 by the front-end visual detection equipment, and after the PCBA is conveyed to the conveying device on the two adjusting rails 13, the PCBA is gradually driven into the screening area from the feeding channel under the continuous conveying of the conveying device. When it is completely in the screening area, if the PCBA is an NG plate, the conveying device stops conveying, so that the PCBA is just stopped between the two screening frames 12, and the bottom of the PCBA is just placed on the top surface of the two hanging teeth 121. Then, the screening frame 12 is lifted by the lifting structure, and specifically, the meaning of one station is: the two hanging teeth 121 on the same horizontal line are lifted by a constant distance, and the PCBA is lifted to be not in contact with the conveying device. If the PCBA is an OK plate, the conveying device continues to convey until the PCBA is conveyed to the subsequent link from the feeding channel.

[0052] When the screening frame 12 is full of NG plates, the total controller starts the driving guide rail 22 and the electric telescopic rod 24 at the same time. After the electric telescopic rod 24 is started, the telescopic end is extended downward, driving the slotted plate 26 and the two groups of combined brackets 25 to move downward synchronously, and driving each bearing plate to correspond to the hanging tooth 121. After the driving guide rail 22 is started, the sliding block 23 translates along the outside of the driving guide rail 22 towards the direction close to the screening frame 12, as shown in Figure 5 Each bearing plate supports the bottom of each NG plate in a symmetrical manner, so as to stably support each NG plate.

[0053] With the continuous translation of the slider 23, each NG plate will be moved synchronously and completely away from each hanging tooth 121, that is, each NG plate is away from the screening area. When the slider 23 stops moving, each NG plate is on the delivery channel at this time, and the total controller controls the extension of the telescopic rod 24 to move upward and retract, driving each bearing plate to move upward synchronously. Its function is to make the NG plate at the bottom not contact the conveying device, so as to not affect the normal conveying of the conveying device. When the NG plate is on the delivery channel, the screening work of the PCBA does not need to be stopped at this time. After the worker takes away all the NG plates, the servo motor is started to drive the telescopic rod 24 and the combined bracket 25 to rotate one hundred and eighty degrees, that is, the horizontal part of each bearing plate faces the screening frame 12. When the screening frame 12 is full of NG plates again, the telescopic rod 24 drives the combined bracket 25 to move downward, and then the slider 23 is translated reversely on the driving guide rail 22 to reset, so as to move each NG plate to the delivery channel. At this time, the worker can take down the NG plates one by one in this area, and at the same time, the screening work of the PCBA does not need to be stopped during this process.

[0054] Therefore, by setting the active transfer mechanism, the NG plate can be automatically sent away from the screening area after being screened out, and the normal screening work of the screening area will not be affected by the worker manually taking down the NG plate. Compared with the prior art, the NG plate is usually manually removed after being full, and the device is in an idle state during this period. The present scheme automatically translates each bearing plate to remove the NG plate, so that the screening work can continuously receive new NG plates without waiting for manual operation, significantly reducing downtime and improving the continuous operation capacity of the device.

[0055] Embodiment two:

[0056] As Figure 3 , Figure 7As shown in the above, the screening machine for cooperative PCBA detection further comprises an adjusting device, the adjusting device comprises a slotted plate 26 connected with the lifting device, specifically, the top of the slotted plate 26 is connected with the telescopic end of the electric control telescopic rod 24 through bolts. The bottom of the slotted plate 26 is provided with a limiting slot, the vertical parts of the two bearing plates located at the top of the two sets of combined carriages 25 are each provided with a slot block 27, and the two sets of combined carriages 25 are slidably arranged in the limiting slot through the slot block 27, and can only translate along the length direction of the slotted plate 26. The cross-sectional shape of the limiting slot is T-shaped, and the shape of the slot block 27 is the same as the cross-sectional shape of the limiting slot. The vertical parts of the two bearing plates located at the middle position of the two sets of combined carriages 25 are each fixedly provided with a nut sleeve block 28, and the two nut sleeve blocks 28 are rotatably provided with a bidirectional adjusting screw rod 29 therebetween, and the bidirectional adjusting screw rod 29 is threadedly connected with the two nut sleeve blocks 28. The lead range of the bidirectional adjusting screw rod 29 is the same as the range of the adjusting component 14 for adjusting the distance between the two screening frames 12, that is, by rotating the bidirectional adjusting screw rod 29, the two nut sleeve blocks 28 drive the corresponding combined carriages 25 to move towards each other or away from each other, and the moving range is within the moving adjustment range of the two screening frames 12.

[0057] In use: In addition, considering that different PBCAs have different sizes, the two screening frames 12 with adjustable distance are used in cooperation. Before the screening operation, the staff can adjust the distance between the two sets of combined carriages 25 according to the width size of the batch of PCBAs. Specifically, by rotating the bidirectional adjusting screw rod 29, the two nut sleeve blocks 28 are driven to move towards each other or away from each other under the limiting action of the slotted plate 26 and the slot block 27, so as to drive the two sets of combined carriages 25 to move synchronously, thereby realizing the distance adjustment of the two sets of combined carriages 25 to adapt to PBCAs of different sizes. Therefore, by using the adjusting device, the distance between the two sets of combined carriages 25 can be adjusted to adapt to PCBAs of different sizes in cooperation with the two screening frames 12 with adjustable distance, which not only improves the adaptability of the bearing NG plate, but also improves the practicability of the bearing and conveying link.

[0058] Embodiment three:

[0059] As Figure 9 , Figure 10As shown in the above, the screening machine for detecting the cooperative PCBA further comprises a matching processing mechanism arranged on the two adjusting rails 13, and the matching processing mechanism comprises an external dust suction device. The screening machine further comprises an electric hydraulic rod 32 arranged on the top surface of the adjusting rail 13 close to the delivery channel, and the electric hydraulic rod 32 is provided with a controller, and the telescopic end of the electric hydraulic rod 32 is fixedly connected with a vertical pipe 33, one side of the vertical pipe 33 is communicated with an external pipe 34, the external pipe 34 is in communication with the air suction end of the dust suction device, and the other side of the vertical pipe 33 is communicated with a plurality of array pipes 35 distributed equidistantly from top to bottom, and the bottom of each array pipe 35 is uniformly communicated with a plurality of air inlet nozzles 36, and the position of each air inlet nozzle 36 corresponds to each hanging tooth 121 located on the same side and at the same height.

[0060] The matching processing mechanism further comprises a mounting seat 31, and four mounting seats 31 are arranged in total, and two mounting seats 31 located on the same side constitute a group, and the electric hydraulic rod 32 is mounted on the corresponding mounting seat 31, and specifically, the mounting seat 31 is composed of a fixed block fixed on the top surface of the adjusting rail 13 and a clamping block connected to the top of the fixed block by bolts and screws, so as to facilitate the staff to install or replace the electric hydraulic rod 32.

[0061] In use: considering that the surface of the hanging tooth 121 in contact with the PCBA will be attached with impurities or dust after long-time use, and the dust will cause static electricity, thereby damaging the NG plate, and the NG plate also needs to be subjected to subsequent secondary re-inspection or maintenance processing. Therefore, when the screening frame 12 does not move downward and is still at the uppermost position, the electric hydraulic rod 32 is started to drive the telescopic end to drive the vertical pipe 33, the external pipe 34, the array pipe 35 and the air inlet nozzle 36 to translate towards the direction close to the hanging tooth 121, and when the movement stops, the air inlet nozzle 36 is located at the top of the hanging tooth 121, and the external dust suction device is started again to use the negative pressure effect to completely suck away the dust or impurities attached to the top surface of the hanging tooth 121. Therefore, through the matching processing mechanism, the dust and impurities attached to the surface of the hanging tooth 121 can be effectively removed, the impurities and dust are prevented from being attached to the subsequent NG plate, the tedious steps of manually removing the dust and impurities are reduced, and through the removal of the dust and impurities, the influence of static electricity generated by the contact between the NG plate and the hanging tooth 121 in the PCBA is reduced, and the damage rate of the NG plate is reduced.

[0062] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A screening machine for collaborative PCBA inspection, comprising a screening machine body (1), wherein two support frames (11) are symmetrically arranged on the top of the screening machine body (1), and baffles are hinged on the two support frames (11); two adjusting rails (13) are also symmetrically installed on the top of the screening machine body (1), and screening frames (12) are respectively provided on the two adjusting rails (13), and evenly distributed hanging teeth (121) are provided on the screening frames (12); and an adjusting component (14) is provided between the bottoms of the two adjusting rails (13), characterized in that, Two support frames (11) and baffles form a screening area for PCBA screening on the top of the screening machine body (1), and feed channels and feed-out channels are respectively provided on both sides of the screening area in the lateral direction. An active transfer mechanism is mounted on a support frame (11) and located on one side of the feed channel, and includes a transfer device and an adjustment device; The transfer device includes a combination bracket (25) corresponding to the position of the screening rack (12). A drive device is provided between the top of the combination bracket (25) and the support frame (11) and along the transverse direction of the screening area. The combination bracket (25) is located directly below the drive device. A lifting device is provided between the drive device and the combination bracket (25). A steering device for lifting the device and controlling the rotation of the combination bracket (25) is also provided between the lifting device and the drive device. The height of the combination bracket (25) is adjusted by the lifting device, and the translational movement of the combination bracket (25) is achieved by the drive device, so as to send the screened PCBA away from the screening area. Two sets of combined brackets (25) are symmetrically arranged, and each set of combined brackets (25) is composed of bearing plates arranged at equal intervals from top to bottom. Each bearing plate is fixedly connected to the others, and the height of each bearing plate when it moves down to its final position corresponds to the height of the corresponding hanging tooth (121). The bearing plate is L-shaped, including vertical and horizontal parts. An adjustment device is used to adjust the spacing between the two sets of combined brackets (25).

2. The screening machine for collaborative PCBA inspection according to claim 1, characterized in that, The drive device includes two symmetrically arranged suspension plates (21). The two suspension plates (21) are fixedly arranged on the outer wall of the two support frames (11) on opposite sides. The ends of the two suspension plates (21) that are opposite to each other are jointly installed with a drive rail (22). A slider (23) is slidably fitted on the drive rail (22). The lifting device is an electrically controlled telescopic rod (24).

3. The screening machine for collaborative PCBA inspection according to claim 2, characterized in that, A rolling element is provided between the slider (23) and the drive rail (22), and the rolling element is a ball or a roller.

4. The screening machine for collaborative PCBA inspection according to claim 2 or 3, characterized in that, The slider (23) is provided with dustproof lips on both sides, and the dustproof lips are made of elastic rubber.

5. The screening machine for collaborative PCBA inspection according to claim 1, characterized in that, The horizontal portion of the bearing plate has an inclined rounded corner surface at its end, and the top surface of the horizontal portion is provided with an antistatic adhesive layer, which is conductive silicone.

6. The screening machine for collaborative PCBA inspection according to claim 1, characterized in that, The adjusting device includes a grooved plate (26) connected to the lifting device. The bottom of the grooved plate (26) is provided with a limiting groove. The two sets of combined brackets (25) are provided with groove blocks (27) on the vertical parts of the two topmost bearing plates. The two sets of combined brackets (25) are slidably set in the limiting groove through the groove blocks (27) and can only move along the length direction of the grooved plate (26). The two sets of combined brackets (25) are fixedly provided with threaded nut blocks (28) on the vertical parts of the two bearing plates at the middle position. A bidirectional adjusting screw (29) is rotatably provided between the two threaded nut blocks (28). The bidirectional adjusting screw (29) is threadedly connected to the two threaded nut blocks (28).

7. The screening machine for collaborative PCBA inspection according to claim 6, characterized in that, The cross-sectional shape of the limiting groove is T-shaped, and the shape of the groove block (27) is the same as the cross-sectional shape of the limiting groove.

8. The screening machine for collaborative PCBA inspection according to claim 6, characterized in that, The lead range of the bidirectional adjusting screw (29) is the same as the range of the adjusting component (14) for adjusting the distance between the two screening frames (12).

9. The screening machine for collaborative PCBA inspection according to claim 1, characterized in that, The two adjustment rails (13) are also provided with a cooperating processing mechanism. The cooperating processing mechanism includes an external dust collection device and an electric hydraulic rod (32) set on the top surface of the adjustment rail (13) near the delivery channel. The electric hydraulic rod (32) is provided with a controller, and the telescopic end of the electric hydraulic rod (32) is fixedly connected to a vertical tube (33). An external pipe (34) is connected to the middle of one side of the vertical tube (33). The external pipe (34) is connected to the suction end of the dust collection device. Multiple array tubes (35) are equidistantly distributed from top to bottom on the other side of the vertical tube (33). Multiple air inlets (36) are uniformly connected to the bottom of each array tube (35). The position of each air inlet (36) corresponds to each hanging tooth (121) located on the same side and at the same height.

10. The screening machine for collaborative PCBA inspection according to claim 9, characterized in that, The cooperating processing mechanism also includes a mounting base (31), of which four mounting bases (31) are provided, and two located on the same side form a group, and the electric hydraulic rod (32) is mounted on the corresponding mounting base (31).

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