PCB detection device with rapid positioning function

Abstract

The invention discloses a PCB detection device with a rapid positioning function, and relates to the technical field of PCB detection.The detection device comprises a machine body, a rotating disc is arranged in the middle of the machine body, and a plurality of bearing tables are arranged on the rotating disc. Through cooperative work of the supporting assembly and the positioning assembly, non-contact position adjustment of the PCB is achieved, the PCB is further prevented from directly moving on the bearing table, the problems of physical damage or element looseness and the like caused by scraping of the PCB are solved, a linkage mechanism is further arranged, and if a driving mechanism breaks down, the rotating angle of the rotating disc has an error, the linkage mechanism can be driven by the linkage mechanism to rotate, and therefore the rotating angle of the rotating disc can be accurately adjusted. The rotating angle of the rotating disc can be corrected through the linkage mechanism, so that the precision and reliability of PCB detection are improved, and meanwhile, subsequent manual calibration of the positions of the bearing table and the industrial camera is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB board detection, and in particular to a PCB board detection device with a rapid positioning function. Background Art

[0002] As an important component of electric vehicles, the electric vehicle dashboard is directly related to the driver's real-time monitoring of the vehicle status and driving safety. Electric vehicle dashboards usually integrate multiple electronic components, such as display screens, sensors, control chips, etc. These components are electrically connected and installed through PCB boards. Therefore, the quality and inspection accuracy of PCB boards are crucial to the performance and reliability of electric vehicle dashboards.

[0003] Currently, there are various types of PCB board inspection devices on the market, mainly including manual visual inspection and automatic optical inspection. To ensure inspection accuracy, these inspection devices usually set various positioning components in the inspection area to adjust the position of the PCB board. However, when the existing PCB board inspection devices adjust the position of the PCB board, the PCB board is often moved directly on the workbench. At this time, the PCB board is easily physically damaged by scratches and collisions, affecting the performance and reliability of the PCB board. Finally, the fault tolerance rate of existing PCB inspection devices is low. When the encoder error of the drive mechanism (such as the servo motor) or the transmission component wears out, it will cause the support platform to stop deviation. The existing inspection devices lack a real-time error correction mechanism. At the same time, after the fault is repaired, the staff often need to manually calibrate the origin position, which restricts the working efficiency of the equipment. Summary of the Invention

[0004] The object of the present invention is to provide a PCB board detection device with a rapid positioning function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a PCB board detection device with a rapid positioning function, the detection device includes a body, a turntable is provided at the middle position of the body, a plurality of bearing platforms are provided on the turntable, and a group of positioning components are provided on the outside of each bearing platform, a lifting mechanism is provided at the top of the body, an industrial camera is provided at the working end of the lifting mechanism, a mounting seat is provided below the turntable, a linkage mechanism is provided in the mounting seat, a driving mechanism is provided at the lower end of the body, one end of the linkage mechanism is connected to the driving mechanism, and the other end of the linkage mechanism is provided with an angle detection element and connected to the turntable. When the present invention is in operation, a PCB board is placed on one of the bearing platforms by manual or mechanical grippers, and the positioning component is used to check whether the PCB board is located at the center position of the bearing platform and whether it is tilted, and to correct the PCB board that is not in the correct position. When the position of the PCB board is correct, the turntable is driven to rotate by the driving mechanism and the linkage mechanism until the bearing platform on which the PCB board to be detected is placed rotates to be directly below the industrial camera, and then the turntable is lifted and lowered by the lifting mechanism. The lowering mechanism drives the industrial camera close to the PCB board to be inspected, and the PCB board to be inspected is inspected by the industrial camera. Compared with the existing PCB board inspection device, the linkage mechanism in the present invention has an angle correction function. That is, when the PCB board to be inspected is moved, if the driving mechanism fails and causes an error in the rotation angle, the linkage mechanism can correct the rotation angle of the turntable to ensure that the supporting platform of the PCB board to be inspected can be accurately moved to directly below the industrial camera, thereby improving the accuracy and reliability of PCB board inspection and preventing the component features on the PCB board from being difficult to fully and clearly present in the field of view of the industrial camera. On the other hand, in the existing PCB board inspection device, when the faulty driving mechanism is repaired, in order to ensure the normal subsequent inspection work, manual intervention calibration is often required to move the supporting platform with the PCB board to be inspected to directly below the industrial camera. The present invention introduces a correction mechanism to ensure that even if the driving mechanism fails, the position of the supporting platform with the PCB board to be inspected can be aligned with the industrial camera, thereby reducing the trouble of manual intervention calibration and improving work efficiency.

[0006] Furthermore, a movable groove is provided at the middle position of each supporting platform, and a supporting assembly is provided in each movable groove. The turntable is provided with several grooves, and a first magnetic block is provided inside each groove. Each first magnetic block is aligned with a supporting assembly, and the first magnetic block is magnetically connected to the supporting assembly. The present invention ensures that the supporting assembly can move stably horizontally in the movable groove through the first magnetic block. When the PCB board to be inspected is placed on the supporting platform, the positioning assembly is first used to check whether the position of the PCB board to be inspected is correct. When the position of the PCB board to be inspected is correct, the turntable is driven to rotate by the driving mechanism and the linkage mechanism until the PCB board to be inspected is aligned with the industrial camera. When the position of the PCB board to be inspected is incorrect, the PCB board to be inspected is adsorbed by the supporting assembly and the PCB board to be inspected is made to leave the supporting platform. Finally, the positioning assembly is used to correct the incorrectly positioned PCB board to be inspected. Compared with the current technical solution for correcting the PCB board to be inspected, the present invention can avoid the PCB board to be inspected from moving directly on the supporting platform, thereby preventing the PCB board to be inspected from being physically damaged or components from loosening due to scratches.

[0007] Furthermore, the positioning assembly includes a positioning cylinder, and the positioning cylinders are provided with four, and the four positioning cylinders are respectively arranged around the bearing platform, and a mounting bracket is provided at the working end of each positioning cylinder, and a positioning column is provided at both ends of the interior of each mounting bracket, and a piezoelectric piece is provided on the outer wall of each positioning column. The present invention drives the four mounting brackets to move by the four positioning cylinders. When the PCB board to be tested is placed in the correct position on the bearing platform, the four mounting brackets move to the target position (the target position is determined by the size of the PCB board to be tested), and each positioning column will accurately fit the edge of the PCB board to be tested. At this time, due to the piezoelectric effect, the pressure on each positioning column Each electronic chip generates a set of electrical signals that meet preset standards. If the position of the PCB to be inspected is offset when placed on the support platform, some of the positioning posts of the four mounting frames will contact the edges of the PCB to be inspected before they move to the target position. At this time, the staff can control two aligned mounting frames to move toward each other to the target position as needed, and then control another two aligned mounting frames to move toward each other to the target position. At this time, under the pressure of several positioning posts, the offset PCB to be inspected will be pushed to the correct position on the support platform. Through this technical solution, the accuracy of subsequent inspection of the PCB to be inspected is ensured, and defect information loss or identification errors due to position deviation are prevented.

[0008] Furthermore, the support assembly includes a support seat and a vacuum suction cup, the inner upper end of the support seat is provided with a slide groove, the lower end of the vacuum suction cup is provided with a sleeve, the sleeve is arranged in the slide groove, the inner upper end of the sleeve is provided with a second magnetic block, and the inner bottom end of the slide groove is provided with a first electromagnet. When the support assembly in the present invention is not working, the upper surface of the vacuum suction cup is lower than the working surface of the carrier table, that is, when the PCB board to be tested is placed on the carrier table, the vacuum suction cup and the PCB board to be tested are in a non-contact state, and there is a certain gap between the two, and the sleeve can rotate freely in the slide groove. When the positioning assembly detects that the position of the PCB board to be tested placed on the carrier table is offset, a group of magnetic fields that repel the second magnetic block are generated by the first electromagnet, so that the vacuum suction cup The first electromagnet gradually reduces the magnetic field generated by the first electromagnet to cause the vacuum suction cup and the PCB to be inspected to descend. When the PCB to be inspected contacts the working surface of the carrier table, the vacuum suction cup and the first electromagnet are turned off to keep the vacuum suction cup away from the PCB to be inspected. Finally, a vacuum sponge suction cup is used to prevent damage to the PCB to be inspected.

[0009] Furthermore, a group of reset mechanisms is provided inside each supporting platform, and the reset mechanism includes two mounting slots, which are relatively arranged on both sides of the movable slot, and a reset motor and a reel are provided in each mounting slot, and each reel is provided with a reset rope, and the two reset ropes are respectively connected to the two ends of the support assembly. During the operation of the support assembly in the present invention, the reset rope on each reel is in a relaxed state, thereby facilitating the free horizontal movement of the support assembly in the movable slot. During the operation of the support assembly in the present invention, the reset rope on each reel is in a relaxed state, thereby facilitating the free horizontal movement of the support assembly in the movable slot. When the offset PCB board to be inspected reaches the correct position and the support assembly is away from the PCB board to be inspected, the staff can start the two sets of reset motors to reel the two reset ropes onto the two reel wheels. Under the tension of the two reset ropes, the support assembly will automatically reset to the center position of the movable slot, which is convenient for subsequent use.

[0010] Furthermore, each mounting groove is connected to the movable groove through a through hole, and each reset rope is provided with a positioning ball, the diameter of the positioning ball is larger than the diameter of the through hole. When the support assembly is in the non-working state, the two positioning balls are respectively located at one end of the two through holes close to the movable groove. At this time, the two reset ropes are in a taut state. When the support assembly is in the working state, the two positioning balls fall into the movable groove, and the two reset ropes are in a relaxed state. When the staff turns on the two sets of reset motors to restore the two reset ropes to the taut state, the two positioning balls will be stuck when moving into the two through holes. The present invention can ensure that the two reset ropes have the same reeled length by providing a positioning ball on each reset rope, thereby ensuring that the support assembly automatically resets to the center position of the movable groove.

[0011] Furthermore, the driving mechanism includes a reversing motor and a gear box, and the linkage mechanism includes a first linkage disk and a second linkage disk. The working end of the reversing motor is connected to the input end of the gear box, and the first linkage disk is connected to the output end of the gear box through a first linkage shaft. The second linkage disk is provided with a second electromagnet at one end close to the first linkage disk, and the second linkage disk is connected to the turntable through the second linkage shaft. The angle detection element is provided on the second linkage shaft, and the first linkage disk is made of ferromagnetic material. When the present invention is working, the first linkage disk and the second linkage disk are magnetically fixed together through the second electromagnet, and the linkage mechanism is driven by the reversing motor and the gear box to rotate the turntable, and the angle detection element is used to detect whether the rotation angle of the turntable is correct, thereby ensuring the subsequent PCB board detection accuracy.

[0012] Furthermore, two limit blocks are provided at one end of the second linkage disk close to the first linkage disk, and two limit grooves are provided at one end of the first linkage disk close to the second linkage disk, and each limit block is inserted into a limit groove respectively. Since the liquid is incompressible, the present invention fills both sides of each limit block with hydraulic oil. Through the two limit blocks, the two limit grooves and the hydraulic oil on both sides of each limit block, the present invention can effectively prevent the second linkage disk and the first linkage disk from sliding relative to each other due to insufficient magnetic force of the second electromagnet.

[0013] Furthermore, a correction component is provided at the middle position of the first linkage disk, and the correction component is connected to the two limit slots. The turntable with an incorrect rotation angle is corrected by the correction component.

[0014] Furthermore, the correction component includes two offset cylinders and two hydraulic grooves. The two offset cylinders are arranged between the two hydraulic grooves. A piston is provided in each hydraulic groove. The two hydraulic grooves are respectively connected to the two ends of the two limit grooves. The specific connection method is as follows: one hydraulic groove is connected to one end of the two limit grooves away from each other, and the other hydraulic groove is connected to the other end of the two limit grooves away from each other. When the driving mechanism works normally, the two offset cylinders are in a non-open state. When the driving mechanism fails and causes an error in the rotation angle, the staff can control the working end of one of the offset cylinders to retract and the working end of the other offset cylinder to extend. At this time, under the action of hydraulic pressure, the two limit blocks will drive the second linkage disk and the turntable to rotate, and then correct the turntable with the wrong rotation angle to ensure that the PCB board to be inspected is directly below the industrial camera.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: compared with the current PCB detection device, the present invention is provided with a support component and a positioning component. Through the coordinated work of the support component and the positioning component, the full process of "adsorption lifting, suspension correction, and smooth reset" contactless position adjustment is realized, thereby avoiding the PCB board from moving directly on the carrier, preventing the PCB board from being physically damaged or components loosening due to scratches, and other problems. In addition, the positioning component in the present invention uses a plurality of positioning columns to push the PCB board to adjust the offset PCB board to the correct position on the carrier. On the one hand, the positioning component can adjust the position of PCB boards of different sizes, and on the other hand, the plurality of positioning columns push the PCB board. When inspecting the PCB, the staff can obtain the force exerted by each positioning post on the PCB board by monitoring the electrical signal generated by the piezoelectric piece provided on each positioning post, so as to prevent a certain positioning post from exerting too much force on the PCB board, thereby causing damage to the PCB board. Finally, the present invention is also provided with a linkage mechanism. If the driving mechanism fails, resulting in an error in the rotation angle of the turntable, the rotation angle of the turntable can be corrected through the linkage mechanism to ensure that the supporting platform of the PCB board to be inspected can be accurately moved to directly under the industrial camera, thereby improving the accuracy and reliability of PCB board inspection. At the same time, it also avoids the need for subsequent staff to manually calibrate the position of the supporting platform and the industrial camera when the maintenance of the failed driving mechanism is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection between the turntable and the drive mechanism of the present invention; Figure 3 This is a schematic diagram of the position of the positioning component of the present invention; Figure 4 It is a schematic diagram of the turntable structure of the present invention; Figure 5It is a schematic diagram of the position of the support assembly of the present invention; Figure 6 This is a schematic diagram of the support assembly structure of the present invention; Figure 7 It is a schematic diagram of the linkage mechanism structure of the present invention; Figure 8 This is a schematic structural diagram of the second linkage disk of the present invention; Figure 9 This is a schematic structural diagram of the first linkage disk of the present invention; Figure 10 It is a schematic diagram of the position of the correction component of the present invention.

[0017] In the figure: 1. Body; 2. Lifting mechanism; 3. Industrial camera; 4. Turntable; 41. Groove; 411. First magnetic block; 5. Carrying platform; 51. Positioning cylinder; 52. Mounting frame; 521. Positioning column; 53. Support assembly; 531. Support seat; 5311. First electromagnet; 532. Vacuum suction cup; 5321. Second magnetic block; 54. Reset motor; 541. Winding wheel; 542. Positioning ball; 543. Reset rope; 55. Movable slot; 6. Mounting seat; 61. First linkage disk; 611. First linkage shaft; 612. Limiting slot; 613. Offset cylinder; 614. Piston; 615. Hydraulic slot; 62. Second linkage disk; 621. Second linkage shaft; 622. Second electromagnet; 623. Limiting block; 63. Angle detection element; 7. Reversing motor; 71. Gearbox. DETAILED DESCRIPTION

[0018] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0019] Example: Figures 1-10As shown, the present invention provides a technical solution, a PCB board detection device with a rapid positioning function, the detection device includes a body 1, a turntable 4 is provided at the middle position of the body 1, a plurality of bearing platforms 5 are provided on the turntable 4, and a group of positioning components are provided on the outside of each bearing platform 5, a lifting mechanism 2 is provided at the top of the body 1, an industrial camera 3 is provided at the working end of the lifting mechanism 2, a mounting seat 6 is provided below the turntable 4, a linkage mechanism is provided in the mounting seat 6, a driving mechanism is provided at the lower end of the body 1, one end of the linkage mechanism is connected to the driving mechanism, and the other end of the linkage mechanism is provided with an angle detection element 63 and connected to the turntable 4. When the present invention is in operation, a PCB board is placed on one of the bearing platforms 5 by manual or mechanical grippers, and the positioning component is used to check whether the PCB board is located at the center position of the bearing platform 5 and whether it is tilted, and to correct the PCB board that is not in the correct position. When the position of the PCB board is correct, the turntable 4 is driven to rotate by the driving mechanism and the linkage mechanism until the bearing platform 5 on which the PCB board to be detected is placed rotates to just below the industrial camera 3, and then the lifting mechanism 2 drives the working mechanism to rotate. The industrial camera 3 is close to the PCB board to be inspected, and the PCB board to be inspected is inspected by the industrial camera 3. Compared with the existing PCB board inspection device, the linkage mechanism in the present invention has an angle correction function. That is, when moving the PCB board to be inspected, if the driving mechanism fails and causes an error in the rotation angle, the linkage mechanism can correct the rotation angle of the turntable 4 to ensure that the supporting platform 5 of the PCB board to be inspected can be accurately moved to directly below the industrial camera 3, thereby improving the accuracy and reliability of PCB board inspection and preventing the component features on the PCB board from being difficult to fully and clearly present in the field of view of the industrial camera 3. On the other hand, in the existing PCB board inspection device, when the faulty driving mechanism is repaired, in order to ensure the normal subsequent inspection work, manual intervention calibration is often required to move the supporting platform 5 with the PCB board to be inspected to directly below the industrial camera 3. The present invention introduces a correction mechanism to ensure that even if the driving mechanism fails, the position of the supporting platform 5 with the PCB board to be inspected can be aligned with the industrial camera 3, thereby reducing the trouble of manual intervention calibration and improving work efficiency.

[0020] like Figure 2-Figure 5As shown, a movable groove 55 is provided at the middle position of each carrier 5, and a support assembly 53 is provided in each movable groove 55. A plurality of grooves 41 are provided on the turntable 4, and a first magnetic block 411 is provided inside each groove 41. Each first magnetic block 411 is aligned with a support assembly 53, and the first magnetic block 411 is magnetically connected to the support assembly 53. The present invention ensures that the support assembly 53 can move stably horizontally in the movable groove 55 through the first magnetic block 411. When the PCB board to be tested is placed on the carrier 5, the positioning assembly is first used to check whether the position of the PCB board to be tested is correct. When the position of the PCB to be inspected is correct, the turntable 4 is driven to rotate by the driving mechanism and the linkage mechanism until the PCB to be inspected is aligned with the industrial camera 3. When the position of the PCB to be inspected is incorrect, the PCB to be inspected is adsorbed by the supporting component 53 and the PCB to be inspected is moved away from the supporting platform 5. Finally, the positioning component is used to correct the incorrect position of the PCB to be inspected. Compared with the current technical solution for correcting the deviation of the PCB to be inspected, the present invention can prevent the PCB to be inspected from moving directly on the supporting platform 5, thereby preventing the PCB to be inspected from being physically damaged or components from loosening due to scratches.

[0021] like Figure 2-Figure 3 As shown, the positioning assembly includes a positioning cylinder 51, and there are four positioning cylinders 51. The four positioning cylinders 51 are respectively arranged around the supporting platform 5. A mounting bracket 52 is provided at the working end of each positioning cylinder 51, and a positioning column 521 is provided at both ends of the interior of each mounting bracket 52. A piezoelectric sheet is provided on the outer wall of each positioning column 521. The present invention drives the four mounting brackets 52 to move by the four positioning cylinders 51. When the position of the PCB board to be tested is correctly placed on the supporting platform 5, the four mounting brackets 52 will move to the target position (the target position is determined by the size of the PCB board to be tested). Each positioning column 521 will accurately fit with the edge of the PCB board to be tested. At this time, due to the piezoelectric effect, each positioning column The piezoelectric plates on 521 will generate a set of electrical signals that meet preset standards. If the position of the PCB board to be inspected is offset when it is placed on the carrier 5, the four mounting frames 52 will not move to the target position, and some positioning columns 521 will contact the edge of the PCB board to be inspected. At this time, the staff can control two mutually aligned mounting frames 52 to move toward each other to the target position as needed, and then control the other two mutually aligned mounting frames 52 to move toward each other to the target position. At this time, under the pressure of several positioning columns 521, the offset PCB board to be inspected will be pushed to the correct position on the carrier 5. Through the above technical solution, the accuracy of subsequent inspection of the PCB board to be inspected is ensured, and the loss of defect information or recognition errors due to position deviation is prevented.

[0022] like Figure 5-Figure 6As shown, the support assembly 53 includes a support seat 531 and a vacuum suction cup 532. The upper end of the inner part of the support seat 531 is provided with a slide groove, and the lower end of the vacuum suction cup 532 is provided with a sleeve. The sleeve is arranged in the slide groove, and the upper end of the inner part of the sleeve is provided with a second magnetic block 5321, and the lower end of the inner part of the slide groove is provided with a first electromagnet 5311. When the support assembly 53 in the present invention is not working, the upper surface of the vacuum suction cup 532 is lower than the working surface of the carrier 5, that is, when the PCB board to be inspected is placed on the carrier 5, the vacuum suction cup 532 and the PCB board to be inspected are in a non-contact state, and there is a certain gap between the two. At the same time, the sleeve can rotate freely in the slide groove. When the positioning assembly detects that the position of the PCB board to be inspected placed on the carrier 5 is offset, a set of magnetic fields that repel the second magnetic block 5321 are generated by the first electromagnet 5311, so that the vacuum suction cup 532 rises. And it contacts the PCB board to be inspected, and fixes the PCB board to be inspected through the vacuum suction cup 532. Then, the magnetic field generated by the first electromagnet 5311 is continued to increase, and the PCB board to be inspected and the vacuum suction cup 532 will rise synchronously. When the PCB board to be inspected and the working surface of the carrier 5 are in a non-contact state, the staff can use the positioning component to push the PCB board to be inspected to the correct position on the carrier 5. When the position of the PCB board to be inspected is correct, the first electromagnet 5311 gradually reduces the magnetic field generated to make the vacuum suction cup 532 and the PCB board to be inspected descend. When the PCB board to be inspected contacts the working surface of the carrier 5 again, the vacuum suction cup 532 and the first electromagnet 5311 are turned off to keep the vacuum suction cup 532 away from the PCB board to be inspected. Finally, the vacuum suction cup 532 uses a vacuum sponge suction cup to avoid damage to the PCB board to be inspected.

[0023] like Figure 5 As shown, each supporting platform 5 is provided with a set of reset mechanisms inside, and the reset mechanisms include two mounting slots, which are relatively arranged on both sides of the movable slot 55. A reset motor 54 and a reel 541 are provided in each mounting slot, and each reel 541 is provided with a reset rope 543. The two reset ropes 543 are respectively connected to the two ends of the support assembly 53. During the operation of the support assembly 53 in the present invention, the reset rope 543 on each reel 541 is in a relaxed state, so as to facilitate the free horizontal movement of the support assembly 53 in the movable slot 55. Movement, during the operation of the support assembly 53 of the present invention, the reset rope 543 on each winding wheel 541 is in a relaxed state, so as to facilitate the free horizontal movement of the support assembly 53 in the movable groove 55. When the offset PCB board to be inspected reaches the correct position and the support assembly 53 is away from the PCB board to be inspected, the staff can start the two sets of reset motors 54 to reel the two reset ropes 543 onto the two winding wheels 541. Under the pulling force of the two reset ropes 543, the support assembly 53 will automatically reset to the center position of the movable groove 55, thereby facilitating subsequent use.

[0024] like Figure 5 As shown, each mounting slot is connected to the movable slot 55 through a through hole, and each reset rope 543 is provided with a positioning ball 542. The diameter of the positioning ball 542 is larger than the diameter of the through hole. When the support assembly 53 is in the non-working state, the two positioning balls 542 are respectively located at one end of the two through holes close to the movable slot 55. At this time, the two reset ropes 543 are in a taut state (as shown in FIG. Figure 5 As shown in the figure), when the support assembly 53 is in working condition, the two positioning balls 542 fall into the movable groove 55, and the two reset ropes 543 are in a relaxed state. When the staff turns on the two sets of reset motors 54 to restore the two reset ropes 543 to a taut state, the two positioning balls 542 will be stuck when moving into the two through holes. The present invention can ensure that the reeled lengths of the two reset ropes 543 are the same by providing the positioning balls 542 on each reset rope 543, thereby ensuring that the support assembly 53 automatically resets to the center position of the movable groove 55.

[0025] like Figure 2 、 Figure 7-10 As shown, the driving mechanism includes a reversing motor 7 and a gear box 71, and the linkage mechanism includes a first linkage disk 61 and a second linkage disk 62. The working end of the reversing motor 7 is connected to the input end of the gear box 71, and the first linkage disk 61 is connected to the output end of the gear box 71 through a first linkage shaft 611. The second linkage disk 62 is provided with a second electromagnet 622 at one end close to the first linkage disk 61. The second linkage disk 62 is connected to the turntable 4 through the second linkage shaft 621. The angle detection element 63 is provided on the second linkage shaft 621. The first linkage disk 61 is made of ferromagnetic material. When the present invention is working, the first linkage disk 61 and the second linkage disk 62 are magnetically fixed together by the second electromagnet 622. The linkage mechanism is driven by the reversing motor 7 and the gear box 71 to rotate the turntable 4. The angle detection element 63 is used to detect whether the rotation angle of the turntable 4 is correct, thereby ensuring the accuracy of subsequent PCB board detection.

[0026] like Figure 7-10 As shown, two limit blocks 623 are further provided at one end of the second linkage disk 62 close to the first linkage disk 61, and two limit grooves 612 are provided at one end of the first linkage disk 61 close to the second linkage disk 62. Each limit block 623 is inserted into a limit groove 612 respectively. Since the liquid is incompressible, the present invention fills both sides of each limit block 623 with hydraulic oil. Through the two limit blocks 623, the two limit grooves 612 and the hydraulic oil on both sides of each limit block 623, the present invention can effectively prevent the second linkage disk 62 and the first linkage disk 61 from sliding relative to each other due to insufficient magnetic force of the second electromagnet 622.

[0027] like Figures 8-10As shown, a correction component is provided at the middle position of the first linkage disk 61 , and the correction component is connected to the two limiting grooves 612 .

[0028] like Figures 8-10 As shown, the correction component includes two offset cylinders 613 and two hydraulic grooves 615. The two offset cylinders 613 are arranged between the two hydraulic grooves 615. A piston 614 is arranged in each hydraulic groove 615. The two hydraulic grooves 615 are respectively connected to the two ends of the two limit grooves 612. The specific connection method is as follows: one hydraulic groove 615 is connected to one end of the two limit grooves 612 away from each other, and the other hydraulic groove 615 is connected to the other end of the two limit grooves 612 away from each other (as shown in FIG. Figure 10 As shown in the figure), when the driving mechanism is working normally, the two offset cylinders 613 are both in the non-open state. When the driving mechanism fails, resulting in an error in the rotation angle, the staff can first turn off the second electromagnet 622, and then control the working end of one of the offset cylinders 613 to retract and the working end of the other offset cylinder 613 to extend. At this time, under the action of hydraulic pressure, the two limit blocks 623 will drive the second linkage disk 62 and the turntable 4 to rotate, thereby correcting the turntable 4 with an incorrect rotation angle to ensure that the PCB board to be inspected is located directly below the industrial camera 3.

[0029] The working principle of the present invention is as follows: During operation, a PCB board is placed on one of the supporting platforms 5 using manual or mechanical grippers. The positioning assembly checks whether the PCB board is located at the center of the supporting platform 5 and whether it is tilted. When the PCB board to be inspected is correctly positioned, the drive mechanism and linkage mechanism drive the turntable 4 to rotate until the PCB board to be inspected is aligned with the industrial camera 3. If the PCB board to be inspected is not correctly positioned, the support assembly 53 adsorbs the PCB board to be inspected and moves it off the supporting platform 5. The positioning assembly then corrects the incorrectly positioned PCB board to ensure the correct position of the PCB board to be inspected. If the drive mechanism and linkage mechanism malfunction while driving the turntable 4 to rotate, resulting in an error in the rotation angle, the operator can turn off the second electromagnet 622 in the linkage mechanism and then control the working end of one offset cylinder 613 in the linkage mechanism to retract and the working end of the other offset cylinder 613 to extend. At this time, under the action of the hydraulic pressure, the two limit blocks 623 in the linkage mechanism drive the turntable 4 to rotate, thereby correcting the turntable 4 with an incorrect rotation angle to ensure that the PCB board to be inspected is moved directly below the industrial camera 3.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A PCB board detection device with a rapid positioning function, characterized by: The detection device comprises a body (1), a turntable (4) is provided at the middle position of the body (1), a plurality of bearing platforms (5) are provided on the turntable (4), a group of positioning components are provided on the outer side of each bearing platform (5), a lifting mechanism (2) is provided at the top of the body (1), an industrial camera (3) is provided at the working end of the lifting mechanism (2), a mounting seat (6) is provided below the turntable (4), a linkage mechanism is provided in the mounting seat (6), a driving mechanism is provided at the lower end of the body (1), one end of the linkage mechanism is connected to the driving mechanism, and the other end of the linkage mechanism is provided with an angle detection element (63) and connected to the turntable (4), and the linkage mechanism has an angle correction function; The positioning assembly includes a positioning cylinder (51), and four positioning cylinders (51) are provided. The four positioning cylinders (51) are respectively arranged around the supporting platform (5), and a mounting frame (52) is provided at the working end of each positioning cylinder (51). A positioning column (521) is provided at both ends of the interior of each mounting frame (52), and a piezoelectric sheet is provided on the outer wall of each positioning column (521).

2. The PCB board detection device with rapid positioning function according to claim 1, characterized in that: A movable groove (55) is provided at the middle position of each supporting platform (5), and a supporting assembly (53) is provided in each movable groove (55). The turntable (4) is provided with a plurality of grooves (41), and a first magnetic block (411) is provided inside each groove (41). Each first magnetic block (411) is aligned with a supporting assembly (53), and the first magnetic block (411) and the supporting assembly (53) are magnetically connected.

3. The PCB board detection device with rapid positioning function according to claim 2, characterized in that: The support assembly (53) comprises a support seat (531) and a vacuum suction cup (532), wherein the upper end of the support seat (531) is provided with a slide groove, the lower end of the vacuum suction cup (532) is provided with a slide sleeve, the slide sleeve is arranged in the slide groove, the upper end of the slide sleeve is provided with a second magnetic block (5321), and the lower end of the slide groove is provided with a first electromagnet (5311).

4. The PCB board detection device with rapid positioning function according to claim 2, characterized in that: A reset mechanism is provided inside each supporting platform (5), the reset mechanism comprising two mounting slots, the two mounting slots being arranged oppositely on both sides of the movable slot (55), a reset motor (54) and a reel (541) being provided in each mounting slot, a reset rope (543) being provided on each reel (541), and the two reset ropes (543) being connected to both ends of the support assembly (53), respectively.

5. The PCB board detection device with rapid positioning function according to claim 4, characterized in that: Each mounting groove is connected to the movable groove (55) via a through hole, and each reset rope (543) is provided with a positioning ball (542), wherein the diameter of the positioning ball (542) is larger than the diameter of the through hole.

6. The PCB board detection device with rapid positioning function according to claim 1, characterized in that: The driving mechanism comprises a reversing motor (7) and a gear box (71); the linkage mechanism comprises a first linkage disk (61) and a second linkage disk (62); the working end of the reversing motor (7) is connected to the input end of the gear box (71); the first linkage disk (61) is connected to the output end of the gear box (71) via a first linkage shaft (611); a second electromagnet (622) is provided at one end of the second linkage disk (62) close to the first linkage disk (61); the second linkage disk (62) is connected to the rotating disk (4) via a second linkage shaft (621); and the angle detection element (63) is provided on the second linkage shaft (621).

7. The PCB board detection device with rapid positioning function according to claim 6, characterized in that: Two limit blocks (623) are further provided at one end of the second linkage disk (62) close to the first linkage disk (61), and two limit slots (612) are provided at one end of the first linkage disk (61) close to the second linkage disk (62). Each limit block (623) is inserted into a limit slot (612), and both sides of each limit block (623) are filled with hydraulic oil.

8. The PCB board detection device with rapid positioning function according to claim 7, characterized in that: A correction component is provided at the middle position of the first linkage disk (61), and the correction component is connected to the two limit slots (612). The correction component is used to correct the turntable (4) with an incorrect rotation angle.

9. The PCB board detection device with rapid positioning function according to claim 8, characterized in that: The correction assembly comprises two offset cylinders (613) and two hydraulic grooves (615). The two offset cylinders (613) are arranged between the two hydraulic grooves (615). A piston (614) is provided in each hydraulic groove (615). The two hydraulic grooves (615) are respectively connected to the two ends of the two limiting grooves (612).

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