Screening machine for collaborative PCBA detection

Abstract

The invention provides a screening machine for collaborative PCBA detection, and particularly relates to the technical field of screening machines, the screening machine comprises a screening machine main body, two supporting frames are symmetrically arranged at the top of the screening machine main body, baffles are hinged to the two supporting frames, two adjusting rails are further symmetrically installed at the top of the screening machine main body, screening frames are arranged on the two adjusting rails respectively, and the baffles are hinged to the two adjusting rails. The transferring device comprises a combined bracket arranged corresponding to the screening frame in position, through the arranged active transferring mechanism, the NG plates can be automatically conveyed away from the screening area after being screened out, the situation that normal screening operation of the screening area is affected due to the fact that workers take down the NG plates manually is avoided, and compared with the prior art, the screening efficiency is improved. After the NG plates are fully placed, manual shutdown and manual removal of the NG plates are generally needed, and the equipment is in an idle state during the period, however, according to the scheme, the NG plates are moved away through automatic translation of the bearing plates, new NG plates can be continuously received without waiting for manual operation during screening operation, the shutdown time is remarkably shortened, and the continuous operation capacity of the equipment is improved.

Description

Technical Field

[0001] The present invention provides a screening machine for collaborative PCBA detection, and particularly relates to the technical field of screening machines. Background Art

[0002] A PCBA inspection screening machine, also known as a "good-or-bad" screening machine, is a device used for automated product inspection and sorting, widely used in the electronics manufacturing industry. Its primary function is to perform quality inspection on PCBs and printed circuit boards (PCBAs), automatically separating qualified (OK) from unqualified (NG) products according to preset standards, thereby improving production efficiency and product quality consistency. During screening, the machine receives inspection signals from the preceding inspection process (AOI visual inspection) and uses a gradually ascending screening rack to intercept and buffer NG boards on the rack, while NG boards pass directly to the next step.

[0003] Patent announcement number CN213558561U discloses a PCB circuit board screening machine, which detects in advance through the front machine and sends an NG signal to the screening mechanism to make its hanging teeth rise and lift the product to complete the screening. It has high screening efficiency, low labor intensity, low labor cost, few defective products, high yield rate, little raw material waste and low raw material cost, effectively meeting the use requirements.

[0004] Although the screening machine in the aforementioned reference document (prior art) can effectively screen OK and NG boards, it still has some shortcomings in practical application: In the existing technology, NG boards are usually temporarily stored on the screening rack. When the screening rack reaches the preset load, an alarm device is required to prompt the staff 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-operating state, resulting in the interruption of the screening link due to the shutdown to process the NG boards, a decrease in the effective processing volume per unit time, and a decrease in production efficiency. At the same time, it causes the interruption of material supply in the subsequent processing links, resulting in local bottlenecks in the production line and an imbalance in the overall production rhythm. The core problem lies in the existing NG board processing method, which fails to realize the dynamic management of the screening rack load status and the automatic removal of NG boards, resulting in limited equipment utilization and production line coordination efficiency.

[0005] Therefore, the present invention proposes a screening machine for collaborative PCBA testing to remedy and improve the shortcomings of the prior art. Summary of the Invention

[0006] In view of the defects of the prior art, the present invention provides a screening machine for collaborative PCBA detection, which can effectively solve the relevant technical problems raised by the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention discloses a screening machine for collaborative PCBA testing, comprising a screening machine body, two support frames symmetrically provided on the top of the screening machine body, baffles hingedly connected to the two support frames, two adjustment rails symmetrically mounted on the top of the screening machine body, screening frames respectively provided on the two adjustment rails, and evenly distributed hanging teeth provided on the screening frames, an adjustment component provided between the bottoms of the two adjustment rails, and characterized in that the two support frames and the baffle form a screening area for PCBA screening on the top of the screening machine body, and an inlet channel and an outlet channel are respectively provided on both sides of the screening area in the transverse direction; An active transfer mechanism is provided on the support frame and located on one side of the feeding channel, and includes a transfer device and an adjustment device; The transfer device includes a combined bracket arranged corresponding to the position of the screening rack, a driving device is provided between the top of the combined bracket and the support frame and along the transverse direction of the screening area, the combined bracket is located directly below the driving device, and a lifting device is provided between the driving device and the combined bracket, and a steering device for the lifting device and controlling the steering of the combined bracket is also provided between the lifting device and the driving device. The height adjustment of the combined bracket is achieved by the lifting device, and the translation movement of the combined bracket is achieved by the driving device to send the screened PCBA away from the screening area; There are two groups of combined brackets symmetrically arranged, and each group of combined brackets is composed of load-bearing plates arranged equidistantly from top to bottom. The load-bearing plates are fixedly connected to each other, and the height of each load-bearing plate when it moves down to the final position corresponds to the height position of the corresponding hanging tooth, and the load-bearing plate is L-shaped, including a vertical part and a horizontal part; The adjusting device is used to adjust the distance between the two sets of combined brackets.

[0008] Preferably, the driving device includes two symmetrically arranged suspension plates, which are fixedly arranged on the outer walls of the two support frames on the side away from each other. The ends of the two suspension plates away from each other are jointly installed with a driving guide rail, and a slider is slidably fitted on the driving guide rail. The lifting device is an electrically controlled telescopic rod.

[0009] Preferably, a rolling body is provided between the slider and the driving guide rail, and the rolling body is a ball or a roller.

[0010] Preferably, dust lips are provided on both sides of the slider, and the dust lips are made of elastic rubber material.

[0011] Preferably, the end of the horizontal portion of the carrier plate is provided with an inclined rounded surface, and the top surface of the horizontal portion is provided with an antistatic adhesive layer, and the antistatic adhesive layer is conductive silicone.

[0012] Preferably, the adjusting device includes a slotted plate connected to the lifting device, the bottom of the slotted plate is provided with a limit slot, and the vertical parts of the two top supporting plates in the two groups of combined brackets are provided with slot blocks. The two groups of combined brackets are slidably arranged in the limit slots through the slot blocks and can only be translated along the length direction of the slotted plates. Nut sleeves are fixedly provided on the vertical parts of the two supporting plates in the middle position of the two groups of combined brackets, and a bidirectional adjustment screw rod is rotatably provided between the two nut sleeves, and the bidirectional adjustment screw rod is threadedly connected to the two nut sleeves.

[0013] Preferably, the cross-sectional shape of the limiting groove is T-shaped, and the shape of the groove block is the same as the cross-sectional shape of the limiting groove.

[0014] Preferably, the lead range of the bidirectional adjustment screw is the same as the range of the adjustment component for adjusting the distance between the two screening racks.

[0015] Preferably, a cooperating processing mechanism is also provided on the two adjusting rails, and the cooperating processing mechanism includes an external dust suction device and an electric hydraulic rod arranged on the top surface of the adjusting rail near the delivery channel. A controller is provided on the electric hydraulic rod, and the telescopic end of the electric hydraulic rod is fixedly connected to a vertical tube, and an external tube is connected to the middle of one side of the vertical tube, and the external tube is connected to the suction end of the dust suction device. The other side of the vertical tube is connected to a plurality of array tubes equidistantly distributed from top to bottom, and a plurality of air inlet nozzles are evenly connected to the bottom of each array tube, and the position of each air inlet nozzle corresponds to each hanging tooth located on the same side and at the same height.

[0016] Preferably, the cooperation processing mechanism further includes a mounting seat, and there are four mounting seats in total, with two located on the same side forming a group, and the electric hydraulic rod is installed on the corresponding mounting seat.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: This collaborative PCBA inspection screening machine, through the provision of an active transfer mechanism, can automatically send the NG boards out of the screening area after they are screened out, without affecting the normal screening operation of the screening area due to manual removal of the NG boards by staff. Compared with the existing technology, when the NG boards are full, it is usually necessary to manually stop the machine and manually remove the NG boards, during which time the equipment is idle. In this solution, each carrier plate automatically moves the NG boards horizontally, so that the screening operation can continue to receive new NG boards without waiting for manual operation, significantly reducing downtime and improving the continuous operation capacity of the equipment. The adjustment device can coordinate with the two screening racks with adjustable spacing to adjust the spacing between the two sets of combined brackets to accommodate PCBAs of different sizes. This not only improves the adaptability of supporting NG boards, but also improves the practicality of the support and transfer process. The conductive silicone on the horizontal part of the carrier plate contacts the PCBA. This not only improves the stability of the combined bracket in holding the PCBA to prevent it from falling, but also prevents static electricity from damaging the screened PCBA, reducing the damage rate of the PCBA and the screening cost. Through the coordinated processing mechanism, dust and impurities attached to the surface of the hanging teeth can be effectively removed, preventing impurities and dust from adhering to subsequent NG boards. This not only reduces the tedious steps of manually removing dust and impurities, but also reduces the static electricity impact generated by the contact between the NG board and the hanging teeth in PBCA by removing dust and impurities, thereby reducing the damage rate of the NG board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a main perspective structural diagram of the present invention; Figure 2 It is a three-dimensional structural diagram of the present invention from another perspective; Figure 3 It is a partial three-dimensional structural diagram of the relevant components of the suspension plate in the present invention; Figure 4 It is a partial three-dimensional structural diagram of the relevant components of the driving guide rail in the present invention; Figure 5 It is a partial three-dimensional structural diagram of the relevant components after the combined bracket of the present invention is moved; Figure 6 A three-dimensional structural diagram of the relevant components when the combined bracket of the present invention moves to the final position; Figure 7 It is a partial three-dimensional structural diagram of the relevant components of the slot plate in the present invention; Figure 8 For the present invention Figure 6 A partial enlarged structural diagram in the middle; Figure 9 It is a partial three-dimensional structural diagram of the relevant components of the electric hydraulic rod in the present invention; Figure 10 It is a partial three-dimensional structural diagram of the relevant components when the telescopic end of the electric hydraulic rod in the present invention is extended.

[0019] The numbers in the figure represent: 1. Screening machine body; 11. Support frame; 12. Screening frame; 121. Hanging teeth; 13. Adjustment rail; 14. Adjustment components; Active transfer mechanism: 21, suspension plate; 22, drive guide rail; 23, slider; 24, electric telescopic rod; 25, combined bracket; 26, slot plate; 27, slot block; 28, nut sleeve block; 29, two-way adjustment screw; Cooperating processing mechanism: 31. Mounting seat; 32. Electric hydraulic rod; 33. Vertical tube; 34. External tube; 35. Array tube; 36. Air inlet nozzle. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1: like Figures 1 to 7 As shown, a screening machine for collaborative PCBA detection includes a screening machine body 1, two support frames 11 are symmetrically provided on the top of the screening machine body 1, and baffles are hinged on the two support frames 11. Two adjustment rails 13 are also symmetrically installed on the top of the screening machine body 1, and a conveying device is installed on the side where the two adjustment rails 13 are close to each other. Specifically, the conveying device is an anti-static conveyor belt. A screening frame 12 is provided on each of the two adjustment rails 13, and the screening frame 12 is connected to the lifting structure, which is a prior art. And the screening frame 12 is provided with evenly distributed hanging teeth 121, and an adjustment component 14 for adjusting the distance between the two adjustment rails 13 is provided between the bottoms. Note: the above components are all prior art. The two support frames 11 and the baffle form a screening area for PCBA screening at the top of the screening machine body 1, and a feeding channel and an outlet channel are provided on both sides of the lateral direction of the screening area. The function of the baffle is to prevent dust and impurities from falling on the PCBA; Note: The horizontal direction of the screening area mentioned above is Figure 1 The left and right directions shown are also the directions in which PCBAs are transported horizontally.

[0022] The active transfer mechanism is provided on the support frame 11 and is located on one side of the feeding channel, and includes a transfer device and an adjustment device; The transfer device includes a combined bracket 25 positioned corresponding to the screening rack 12. A drive device is provided between the top of the combined bracket 25 and the support rack 11, and along the transverse direction of the screening area. The drive device includes two symmetrically arranged suspension plates 21, which are fixedly mounted on the outer walls of the two support racks 11 on the side away from each other. The ends of the two suspension plates 21 on the side away from each other are jointly mounted with a drive rail 22. A slider 23 is slidably fitted on the drive rail 22. A rolling element, such as a ball or roller, is provided between the slider 23 and the drive rail 22 to reduce friction between the two, lower drive energy consumption, and improve transmission smoothness. Dust lips made of elastic rubber are provided on both sides of the slider 23 to prevent external dust from entering the sliding fit gap between the slider 23 and the drive rail 22.

[0023] The assembly bracket 25 is located directly below the drive unit. A lifting mechanism is installed between the drive unit and the assembly bracket 25. This mechanism, comprised of an electrically controlled telescopic rod 24, adjusts the height of the assembly bracket 25. This mechanism ensures that, in its initial position, the assembly bracket 25 does not obstruct the passage of PCBAs on the conveyor. The drive unit then translates the assembly bracket 25 to transport the selected PCBAs away from the screening area.

[0024] A steering mechanism is also provided between the lifting mechanism and the drive unit, controlling the steering of the combined bracket 25. The steering mechanism is configured as a servo motor mounted at the bottom of the slider 23, with its output shaft fixedly connected to the top of the non-telescopic end of the electrically controlled telescopic rod 24. The combined brackets 25 are arranged in two symmetrical groups, each consisting of load plates spaced equidistant from top to bottom. The load plates are fixedly connected to each other, and when they reach their final position, the height of each load plate corresponds to the height of the corresponding hanging tooth 121. The load plates are L-shaped, comprising vertical and horizontal sections. Specifically, the top surface of each horizontal section of the load plate is aligned with the top surface of the corresponding hanging tooth 121. This means that when each load plate is translated to the position of the hanging tooth 121, the top surface of each load plate precisely aligns with the bottom surfaces of the PCBAs on the top surfaces of the two hanging teeth 121 positioned at the same height. The ends of the horizontal sections of the load plates are provided with angled, rounded corners to facilitate contact and support of the PCBAs. The top surface of the horizontal part is provided with an antistatic adhesive layer, which is conductive silicone. The conductive silicone is used to contact the PCBA. On the one hand, the stability of the combined bracket 25 supporting the PCBA is improved to prevent it from falling. On the other hand, static electricity is prevented from damaging the screened PCBA, thereby reducing the damage rate of the PCBA and reducing the screening cost.

[0025] Note: The screening machine body 1 is equipped with a master controller for controlling the drive mechanism, specifically the opening and closing of the drive rail 22. This master controller, in conjunction with an infrared detector mounted on the screening machine body 1, detects whether the screening rack 12 is fully loaded with NG boards. When the screening rack 12 is fully loaded with NG boards, the infrared detector transmits a signal to the master controller, which automatically activates the drive rail 22, driving the slider 23 to translate along the drive rail 22. The master controller also controls the extension of the telescopic end of the electrically controlled telescopic rod 24. Furthermore, the master controller controls the opening and closing of the servo motor.

[0026] During operation, the front-end visual inspection equipment transmits PCBA inspection information, including whether it's a "good" or "not good" board, to the main controller on the screening machine body 1. The PCBA is then transported along the conveyor mechanism on two adjustment rails 13. The conveyor mechanism then continues to move the PCBA from the infeed channel into the screening area. Once the PCBA is completely within the screening area, if it's a "good" board, the conveyor mechanism stops, allowing the PCBA to rest precisely between the two screening racks 12, with its bottom sides resting on the top surfaces of two of the hanging teeth 121. The lifting mechanism then raises the screening racks 12 by one station. Specifically, one station means that two hanging teeth 121 on the same horizontal line are raised a constant distance, lifting the PCBA until it's clear of contact with the conveyor mechanism. If the PCBA is a "good" board, the conveyor mechanism continues to move the PCBA until it's delivered from the outfeed channel to the next stage.

[0027] When the screening rack 12 is filled with NG boards, the main controller simultaneously activates the drive rail 22 and the electric telescopic rod 24. After the electric telescopic rod 24 is activated, it extends downward through its telescopic end, driving the slotted plate 26 and the two sets of combined brackets 25 to move downward synchronously, and causing each load-bearing plate to correspond to the hanging teeth 121. After the drive rail 22 is activated, the slider 23 moves along the outside of the drive rail 22 toward the screening rack 12. Figure 5 As shown, during the process, each carrier plate is supported on the bottom of each NG plate, and is lifted on both sides of the bottom of each NG plate in a symmetrical manner to ensure that each NG plate can be supported stably.

[0028] As the slider 23 continues to translate, it drives each NG board synchronously and completely away from the respective hanging teeth 121, effectively moving each NG board away from the screening area. When the slider 23 stops, each NG board is on the discharge channel. The master controller then controls the telescopic end of the electrically controlled telescopic rod 24 to move upward and retract, driving each carrier plate to move the other NG boards upward synchronously. This ensures that the lowest NG board does not contact the conveyor, thereby preventing it from disrupting normal transport. Once the NG boards are on the discharge channel, there is no need to halt PCBA screening. After all NG boards have been removed, the servo motor is activated, driving the electrically controlled telescopic rod 24 and the combined bracket 25 to rotate 180 degrees, aligning the horizontal portions of each carrier plate toward the screening rack 12. When the screening rack 12 is once again filled with NG boards, the electrically controlled telescopic rod 24 drives the combined bracket 25 downward. The slider 23 then translates in the opposite direction on the drive rail 22, returning each NG board to the inlet channel. At this time, the staff can remove the NG boards one by one in this area, and there is no need to stop the PCBA screening work during this process.

[0029] Therefore, through the active transfer mechanism set up, the NG board can be automatically sent away from the screening area after being screened out, and the normal screening operation of the screening area will not be affected by the manual removal of the NG board by the staff. Compared with the existing technology, after the NG board is full, it is usually necessary to manually shut down and manually remove the NG board, and the equipment is idle during this period. This solution automatically moves the NG board away through the translation of each carrying plate, so that the screening operation can continue to receive new NG boards without waiting for manual operation, significantly reducing downtime and improving the continuous operation capacity of the equipment.

[0030] Example 2: like Figure 3 、 Figure 7 As shown, the collaborative PCBA inspection screening machine further includes an adjustment device comprising a slotted plate 26 connected to the lifting device. Specifically, the top of the slotted plate 26 is bolted to the telescopic end of the electrically controlled telescopic rod 24. A limit slot is provided at the bottom of the slotted plate 26. A slot block 27 is provided on the vertical portion of the top two supporting plates of the two combined brackets 25. The two combined brackets 25 are slidably mounted within the limit slots by the slot blocks 27, allowing translation only along the length of the slotted plate 26. The limit slots have a T-shaped cross-section, and the slot block 27 has the same cross-sectional shape as the limit slots. A nut block 28 is fixedly mounted on the vertical portion of the two supporting plates in the middle of the two combined brackets 25. A bidirectional adjustment screw 29 is rotatably mounted between the two nut blocks 28 and is threadedly connected to the two nut blocks 28. The lead range of the bidirectional adjustment screw 29 is the same as the range of the adjustment component 14 for adjusting the distance between the two screening racks 12. That is, by rotating the bidirectional adjustment screw 29, the two nut sleeves 28 drive the corresponding combined brackets 25 to move closer to or away from each other, and the range of movement is within the movement adjustment range of the two screening racks 12.

[0031] When in use: In addition, considering the different sizes of different PBCAs, it is used in conjunction with two screening racks 12 with adjustable spacing. Before the screening operation, the staff can adjust the spacing between the two sets of combined brackets 25 according to the width size of the batch of PCBAs. During the specific operation, by rotating the bidirectional adjustment screw 29, under the limiting action of the slot plate 26 and the slot block 27, the two nut sleeve blocks 28 are driven towards or away from each other, so as to drive the two sets of combined brackets 25 to move synchronously, thereby realizing the adjustment of the spacing between the two sets of combined brackets 25 to adapt to PBCAs of different sizes. Therefore, the use of the set adjustment device can coordinate with the two screening racks 12 with adjustable spacing to adjust the spacing between the two sets of combined brackets 25 to adapt to PCBAs of different sizes, which not only improves its adaptability in supporting NG boards, but also improves the practicality of the support and transfer link.

[0032] Example 3: like Figure 9、 Figure 10 As shown, the above-mentioned screening machine for collaborative PCBA inspection also includes a cooperating processing mechanism disposed on two adjustment rails 13, and the cooperating processing mechanism includes an external dust collection device. It also includes an electric hydraulic rod 32 disposed 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 provided in the middle of one side of the vertical tube 33, and the external pipe 34 is connected to the suction end of the dust collection device. The other side of the vertical tube 33 is connected to a plurality of array tubes 35 distributed equidistantly from top to bottom, and the bottom of each array tube 35 is evenly connected to 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.

[0033] The cooperating processing mechanism also includes a mounting seat 31, of which there are four mounting seats 31 in total, and two located on the same side constitute a group. The electric hydraulic rod 32 is installed on the corresponding mounting seat 31. Specifically, the mounting seat 31 is composed of a fixing block fixed to the top surface of the adjusting rail 13 and a clamping block connected to the top of the fixing block by bolts and screws, so as to facilitate the staff to install or replace the electric hydraulic rod 32.

[0034] During use: Considering that after prolonged use, impurities or dust may accumulate on the contact surface of the hanging teeth 121 with the PCBA, which can generate static electricity and damage the NG boards, which then require subsequent secondary inspection or repair. Therefore, while the screening rack 12 is not moving downward and is still at its uppermost position, the electric hydraulic rod 32 is activated, causing its telescopic end to move the vertical tube 33, external tube 34, array tube 35, and air inlet nozzle 36 in a direction toward the hanging teeth 121. When the movement stops, each air inlet nozzle 36 is exactly at the top of each hanging tooth 121. At this time, the external dust suction device is activated, and the negative pressure is used to completely remove the dust or impurities attached to the top surface of each hanging tooth 121. Therefore, through the setting of the matching processing mechanism, the dust and impurities attached to the surface of the hanging tooth 121 can be effectively removed, preventing the impurities and dust from adhering to the subsequent NG board, which not only reduces the tedious steps of manually removing dust and impurities, but also reduces the static electricity effect generated by the contact between the NG board and the hanging tooth 121 in the PBCA by removing dust and impurities, thereby reducing the damage rate of the NG board.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A screening machine for collaborative PCBA detection, comprising a screening machine body (1), wherein two support frames (11) are symmetrically provided on the top of the screening machine body (1), baffles are hinged on the two support frames (11), two adjustment rails (13) are symmetrically installed on the top of the screening machine body (1), screening frames (12) are respectively provided on the two adjustment rails (13), and evenly distributed hanging teeth (121) are provided on the screening frames (12), and an adjustment component (14) is provided between the bottoms of the two adjustment rails (13), characterized in that: Two support frames (11) and a baffle form a screening area for PCBA screening on the top of the screening machine body (1), and an inlet channel and an outlet channel are respectively provided on both sides of the screening area in a transverse direction; An active transfer mechanism is provided on the support frame (11) and is located on one side of the feeding channel, and comprises a transfer device and an adjustment device; The transfer device includes a combined bracket (25) arranged corresponding to the position of the screening frame (12), a driving device is arranged between the top of the combined bracket (25) and the support frame (11) and along the transverse direction of the screening area, 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), and a steering device for the lifting device and controlling the steering of the combined bracket (25) is also arranged between the lifting device and the driving device, the height adjustment of the combined bracket (25) is achieved by the lifting device, and the translation movement of the combined bracket (25) is achieved by the driving device to send the screened PCBA away from the screening area; The combined brackets (25) are symmetrically arranged in two groups, and each group of combined brackets (25) is composed of bearing plates arranged equidistantly from top to bottom, the bearing plates are fixedly connected, and the height of each bearing plate when moved down to the final position corresponds to the height position of the corresponding hanging tooth (121), and the bearing plate is L-shaped, including a vertical portion and a horizontal portion; The adjusting device is used to adjust the spacing between the two groups of combined brackets (25).

2. The collaborative PCBA detection screening machine according to claim 1, characterized in that: The driving device comprises two symmetrically arranged suspension plates (21), the two suspension plates (21) being fixedly arranged on the outer walls of the two support frames (11) on the side away from each other, and the ends of the two suspension plates (21) on the side away from each other are jointly mounted with a driving guide rail (22), a slider (23) being slidably fitted on the driving guide rail (22), and the lifting device is an electrically controlled telescopic rod (24).

3. The collaborative PCBA detection screening machine according to claim 2, characterized in that: A rolling body is provided between the slider (23) and the driving guide rail (22), and the rolling body is a ball or a roller.

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

5. The collaborative PCBA detection screening machine according to claim 1, characterized in that: The end of the horizontal part of the carrying plate is provided with an inclined rounded surface, and the top surface of the horizontal part is provided with an antistatic adhesive layer, and the antistatic adhesive layer is conductive silica gel.

6. The collaborative PCBA detection screening machine according to claim 1, characterized in that: The adjusting device comprises a slotted plate (26) connected to the lifting device, wherein a limiting slot is provided at the bottom of the slotted plate (26), and slot blocks (27) are provided on the vertical portions of the two topmost bearing plates of the two groups of combined brackets (25). The two groups of combined brackets (25) are slidably arranged in the limiting slots through the slot blocks (27) and can only be translated along the length direction of the slotted plate (26). A nut sleeve block (28) is fixedly provided on the vertical portions of the two bearing plates at the middle positions of the two groups of combined brackets (25), and a bidirectional adjusting screw rod (29) is rotatably provided between the two nut sleeve blocks (28), and the bidirectional adjusting screw rod (29) is threadedly connected to the two nut sleeve blocks (28).

7. The collaborative PCBA detection screening machine 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 collaborative PCBA detection screening machine according to claim 6, characterized in that: The lead range of the bidirectional adjustment screw rod (29) is the same as the range of the adjustment component (14) for adjusting the distance between the two screening racks (12).

9. The collaborative PCBA detection screening machine according to claim 1, characterized in that: The two adjustment rails (13) are also provided with a matching processing mechanism, which includes an external dust collection device and an electric hydraulic rod (32) provided 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 tube (34) is provided in the middle of one side of the vertical tube (33). The external tube (34) is connected to the suction end of the dust collection device. A plurality of array tubes (35) equidistantly distributed from top to bottom are provided on the other side of the vertical tube (33), and a plurality of air inlet nozzles (36) are evenly provided at the bottom of each array tube (35), 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.

10. The collaborative PCBA detection screening machine according to claim 9, characterized in that: The matching processing mechanism also includes a mounting seat (31), and there are four mounting seats (31) in total, with two located on the same side forming a group, and the electric hydraulic rod (32) is mounted on the corresponding mounting seat (31).

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