OSP film thickness detection method and device

Abstract

The present invention discloses an OSP film thickness detection method and device, which relates to the field of printed circuit technology, including a conveying area and a sorting area, characterized in that the conveying area includes a first conveyor belt, the first conveyor belt is arranged on the conveying area base, multiple correction components and material blocking components are arranged at intervals on both sides of the first conveyor belt, and a scanner is arranged on the first conveyor belt; the sorting area includes a sorting area base, a first rolling conveyor belt is arranged at the head end of the sorting area base, the head end of the first rolling conveyor belt is close to the tail end of the first conveyor belt, and the tail end of the first rolling conveyor belt is connected to a sorting component, and the sorting component includes a carrier plate, a closely arranged sorting mechanism is arranged on the carrier plate, a second conveyor belt is arranged at the tail end of the carrier plate, and a second rolling conveyor belt is arranged close to one side of the carrier plate, and the second rolling conveyor belt has a fixed angle with the carrier plate. The problem that the deviation of the conveyor belt cannot be corrected and the deviation of the object cannot be accurately scanned, and the sorting mechanism cannot be sorted at the same time is solved.

Description

Technical Field

[0001] The invention relates to the technical field of printed circuits, and in particular to an OSP film thickness detection method and device. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present application and does not constitute prior art.

[0003] OSP is the abbreviation of Organic Solderability Preservatives, which is one of the main processes for surface treatment of copper foil of printed circuit boards (PCBs). Simply put, OSP is to form an organic film on the clean bare copper surface by chemical methods. This film has anti-oxidation, heat shock resistance, and moisture resistance, and is used to protect the copper surface from rusting (oxidation or sulfide, etc.) in a normal environment; however, in the subsequent high temperature of welding, this protective film can be easily removed by flux quickly, so that the exposed clean copper surface can be immediately combined with molten solder in a very short time to form a solid solder joint.

[0004] The most important thing in OSP is the control of film thickness, that is, film thickness measurement. At present, there are two main methods for measuring and evaluating OSP film thickness in the industry. One is to measure it through an OSP film thickness measuring instrument, and the other is to dissolve the OSP by chemical methods and analyze the solution with a spectrophotometer, and then convert and evaluate the film thickness through the empirical values ​​of production practice.

[0005] Existing technologies such as publication number CN201333448Y, entitled "A Printed Circuit Board Hole Inspection Machine", have made further improvements to the inspection device. First, a scanner is used to scan and inspect. If it is a good product, the printed circuit board is introduced to the corresponding receiving mechanism through a sorting mechanism. If it is a defective product, it is directly introduced to the receiving mechanism for holding defective products through a conveying mechanism. The entire scanning and sorting is controlled by automation. However, the deviation of the conveyor belt cannot be corrected and the deviation of the object cannot be accurately scanned. At the same time, the sorting mechanism cannot be sorted at the same time.

[0006] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0007] The object of the present invention is to provide a method and device for detecting the thickness of an OSP film. The present invention can realize conveyor belt deviation correction and conveyor belt shock absorption during OSP detection, and sorting of defective products detected during the conveying process.

[0008] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0009] An OSP film thickness detection device, comprising:

[0010] The conveying area includes a first conveying belt, which is arranged on a base of the conveying area. A plurality of correction components and material blocking components are arranged at intervals on both sides of the first conveying belt, and a scanner is arranged on the first conveying belt.

[0011] Compared with the prior art, which only has a conveyor belt, the present invention solves the problem that the conveyor belt deviation cannot be corrected quickly and the circuit board cannot correct its route without damage when it deviates. The present invention arranges multiple correction components and material blocking components at intervals on both sides of the first conveyor belt. The mutual contact between the correction components and the conveyor belt ensures that the conveyor belt can be corrected when the conveyor belt deviates, which is beneficial to the stability of the operation of the overall device and prevents the conveyor belt from shaking or stopping after the transmission deviation occurs. The above situations will cause different damage to the OSP film. At the same time, the present invention also arranges material blocking components on both sides of the first conveyor belt. By setting the material blocking components, the circuit board with deviation in the partial transmission path is corrected, which is beneficial to the accurate scanning of the circuit board when passing through the scanner on the first conveyor belt, improving the accuracy of the detection, reducing the misjudgment of the accuracy of the detection result due to the transmission, and preventing some circuit boards from deviating from the scanning range of the scanner when passing through the scanner, causing misjudgment. In addition, the sorting scheme can avoid the use of manipulators or manual sorting to reduce contact with the circuit board, thereby reducing or avoiding damage to the surface of the circuit board or adhesion of dirt.

[0012] The sorting area includes a sorting area base, a first rolling conveyor belt is arranged at the head end of the sorting area base, the head end of the first rolling conveyor belt is close to the tail end of the first conveyor belt, the tail end of the first rolling conveyor belt is connected with a sorting component, the sorting component includes a carrier plate, a closely arranged sorting mechanism is arranged on the carrier plate, a second conveyor belt is arranged at the tail end of the carrier plate, a second rolling conveyor belt is arranged closely on one side of the carrier plate, and the second rolling conveyor belt has a fixed angle with the carrier plate.

[0013] The present invention is designed with a sorting mechanism. After passing through the sorting mechanism, the good circuit board enters the second conveyor belt, and the defective circuit board will have its conveying path changed by the sorting mechanism and be conveyed out from the second rolling conveyor belt. By designing the sorting mechanism, the good circuit board and the defective circuit board can be sorted without stopping the machine, which greatly improves the sorting efficiency of the circuit board and is conducive to improving the overall efficiency. In the long-term use process, compared with the sorting device that needs to be stopped, the sorting mechanism of the present invention has a longer service life and higher sorting efficiency.

[0014] Among them, the first conveyor belt, the second conveyor belt, the second rolling conveyor belt and the carrier plate are arranged horizontally, and the conveying direction of the first rolling conveyor belt is arranged obliquely upward.

[0015] Among them, the scanner and the sorting mechanism are connected to the industrial computer.

[0016] In the present invention, both the scanner and the sorting mechanism are connected to an industrial computer. After the circuit board passes through the scanner, the scanner will send the scanning result to the industrial computer, which will analyze the scanning result, identify good circuit boards and defective circuit boards, and send the detected results to the sorting mechanism. The sorting mechanism will change the transmission path of the defective circuit boards, and transmit the defective circuit boards to the direction of the second rolling conveyor belt. The sorting mechanism will continue to transmit the good circuit boards to the second conveyor belt. The present invention realizes automatic control and sorting of good and defective circuit boards by designing the scanner and the sorting mechanism to be connected to the industrial computer, reducing labor costs, and also preventing manual contamination and damage to the OSP film.

[0017] According to one embodiment of the present invention, the correction component includes two first correction members located on the same side of the first conveyor belt, the first correction member includes a first clamping block, a through slot is provided on one side of the first clamping block, a first rotating plate is hinged below the first clamping block, a correction spindle is provided at the bottom of the other end of the first rotating plate, and a base is provided at the bottom of the correction spindle. The slot of the first clamping block faces the first conveyor belt. When the first conveyor belt deviates, the first conveyor belt will contact the first clamping block through the slot of the first clamping block, forcing the first clamping block to move, the first clamping block will drive the first rotating plate to rotate, the correction spindle will force the first rotating plate to reset, and then reset the first clamping block, and the first clamping block will push the first conveyor belt to reset. The present invention is helpful to prevent the conveyor belt from running off track through the design of the correction component, and to reduce the weight caused by the contact between the conveyor belt and the side components when the conveyor belt runs off track, thereby reducing the vibration of the circuit board on the conveyor belt; secondly, the contact between the first clamping block and the conveyor belt helps to maintain the flatness of the conveyor belt, which is helpful to avoid the deviation of the circuit board on the conveyor belt caused by the inconsistency of the horizontal plane between the middle and the two sides of the conveyor belt; it is helpful to reduce the friction noise generated by the conveyor belt running off track and the vibration and noise generated by the circuit board due to the vibration of the conveyor belt running.

[0018] According to one embodiment of the present invention, a second rotating rod is fixedly connected to the bottom of the first rotating plate in the correction component, and the second rotating rod is a multi-prism structure. The second rotating rod is inserted into the correction main shaft, and a rubber block is arranged in the correction main shaft and distributed around the second rotating rod. Among them, a third rotating plate is arranged between the bottoms of the first clamping blocks of the two first correction members in the correction component. The present invention, through the design of the correction component, when the conveyor belt deviates, the first clamping block abuts against the conveyor belt and transmits the torque to the second rotating rod, and the rotational force formed by the second rotating rod is transmitted to the rubber block to consume the energy generated by the conveyor belt deviation, and the energy consumption by the rubber block helps the second rotating rod to reset, thereby promoting the reset of the conveyor belt in contact with the first clamping block. Compared with the prior art, the provision of the rubber block is conducive to elastically adjusting the force size, which is conducive to making the conveyor belt reset more smoothly, improving the reset efficiency and reducing the conveyor belt jitter generated when the conveyor belt moves horizontally, improving the conveying quality of the conveyor belt and also protecting the circuit boards transported on the conveyor belt.

[0019] The present invention provides a third rotating plate between the bottoms of the first blocks of the two first correcting members in the correction assembly, which can laterally distribute the deviation force of the conveyor belt at the same position, allowing the two first correcting members to correct the conveyor belt. Compared with the prior art, the present invention further improves the stability and shock absorption of the conveyor belt, and further enhances the protection of the conveyor circuit board.

[0020] According to one embodiment of the present invention, a material blocking assembly includes a material blocking base, a material blocking fixing plate is provided on the material blocking base, a plurality of buffer assemblies are equidistantly arranged side by side on one side of the material blocking fixing plate, the buffer assembly includes a buffer column, the axis of the buffer column is perpendicular to the material blocking base, and columnar connecting pieces are respectively provided at the upper and lower ends of the buffer column, the columnar connecting piece is fixedly connected to the head end of the material blocking rod, the middle part of the material blocking rod is hinged to the top end of the material blocking fixing piece, the material blocking fixing piece is trouser-shaped, and the bottom end of the material blocking fixing piece is fixedly connected to the material blocking fixing plate, springs are provided on both sides of the rear end of the material blocking rod to be connected to the material blocking fixing piece, and the buffer column can rotate relative to the columnar connecting piece, and the material blocking fixing plate in the material blocking assembly is provided with a plurality of buffer assemblies located on the same side and facing the first conveyor belt, the buffer assembly is located on the upper side of the first conveyor belt, and the material blocking base is located on the lower side of the first conveyor belt.

[0021] Compared with the prior art, the present invention provides a material blocking assembly that can perform multiple shock absorption on the conveyed circuit board and has steering coordination. For the circuit board that deviates on the conveyor belt, it will contact the collision buffer column, and the column body of the buffer column will be offset. At the same time, the buffer column will rotate for buffering, and the rotation will also reduce the impact damage to the circuit board. After the circuit board is reset, the spring connected to the material blocking rod will reset the material blocking rod, and the buffer column connected to the material blocking rod will also be reset. The present invention is conducive to multiple shock absorption of the conveyed circuit board at the conveying docking point and during the conveying process through the design of the material blocking assembly, and can cooperate with steering at the same time; secondly, it can perform multiple buffering and shock absorption treatment on the circuit board after the collision to reduce the collision damage to the circuit board; in the long-term use process, it can effectively reduce the defective rate of the circuit board caused by the collision on the conveyor belt, which in disguise increases the product yield and output; at the same time, it is also conducive to controlling the overall cost. The device has a simple structure and low cost.

[0022] According to one embodiment of the present invention, a conveyor belt stabilizing device is provided at intervals below the contact surface of the first conveyor belt and the material, and the conveyor belt stabilizing device includes two parallel shock-absorbing shafts that are in rolling contact with the bottom surface of the conveyor belt, and the shock-absorbing shaft is provided on the first shock-absorbing plate, and the first shock-absorbing plate is connected to the lateral conveying area base, and an annular groove is provided on the shock-absorbing shaft and a first belt is arranged thereon, and an auxiliary shaft is provided below the shock-absorbing shaft, and the first belt passes through the auxiliary shaft, and both sides of the auxiliary shaft are connected to the conveying area base, and a second shock-absorbing plate is provided above the auxiliary shaft, and a slot is provided on the second shock-absorbing plate for allowing the first belt to pass therethrough, and the second shock-absorbing plate is connected to the conveying area base.

[0023] The present invention designs a conveyor belt stabilizing device. When the flatness of the conveyor belt surface is affected to a certain extent by the correction device during the transmission process of the first conveyor belt, the stabilizing conveying device can play a rolling support role on the bottom surface of the conveyor belt to maintain the flatness of the conveyor belt during operation. During the operation of the first conveyor belt, small fluctuations may occur, which may cause the circuit board transmitted by the first conveyor belt to deviate from the predetermined trajectory or cause damage. The present invention designs a conveyor belt stabilizing device. When fluctuations occur, the energy of the vibration of the first conveyor belt can be dispersed and consumed, which has a greater shock absorption effect. At the same time, the present invention drives the air flow inside the conveyor belt through the shock-absorbing shaft, the auxiliary shaft, and the first belt, etc., to play a heat dissipation role, and uses the air flow to avoid dust particles from gathering near the conveyor belt, and remove dust particles and floating debris that may exist inside the conveyor belt. In the long-term use process, the overall service life of the machine will be increased, the failure rate will be reduced, and the cost of manual maintenance will be reduced.

[0024] According to one embodiment of the present invention, the sorting mechanism includes a first rolling shaft, a second rolling shaft, a third rolling shaft and a fourth rolling shaft, the axes of the four rolling shafts are located in the same horizontal plane, the first rolling shaft and the third rolling shaft are placed in parallel, the second rolling shaft and the fourth rolling shaft are coaxial, the first rolling shaft and the third rolling shaft are located between the second rolling shaft and the fourth rolling shaft and are symmetrically placed on both sides, the first rolling shaft and the third rolling shaft are longer and are provided with pulleys on both sides, the second rolling shaft and the fourth rolling shaft are shorter and are only provided with pulleys on the inner sides, the second rolling shaft and the fourth rolling shaft are connected by a connecting shaft, a driving motor is provided under the four rolling shafts, each rolling shaft is connected to the driving motor by a belt, a sorting substrate is provided under the driving motor, a sorting base is vertically provided at the edge of the sorting substrate, a fixing hole is provided on the sorting base, a rotating gear is provided under the sorting substrate, and a sorting top plate is provided on the sorting mechanism, the sorting top plate is provided with a slot, and a sorting fixing piece is provided under the sorting top plate.

[0025] The sorting mechanism of the present invention is connected to each rolling shaft and the driving motor through a belt, and the driving motor drives each rolling shaft to rotate in the same direction, which is conducive to keeping each rolling shaft in synchronous operation, preventing the circuit board from running off or rotating, and is conducive to realizing accurate control of the circuit board route. At the same time, the present invention is provided with a rotating gear under the sorting substrate, and the rotation direction of the sorting mechanism as a whole can be controlled by rotating the rotating gear. The angles of different sorting mechanisms of the sorting assembly are controlled by the industrial computer, thereby controlling the transmission routes of circuit boards at different positions, and shunting unqualified circuit boards to the second rolling conveyor belt for transmission. The present invention realizes the transmission guidance of the circuit board to realize the circuit board sorting through the design of the sorting mechanism, avoiding the use of a manipulator or manual sorting, so as to reduce the contact with the circuit board, thereby reducing or avoiding the damage or adhesion of dirt on the surface of the circuit board. At the same time, the contact of the four rotating shafts ensures the effective transmission of the circuit board and ensures that the circuit board is in a continuous contact state with the surface of each rotating shaft as much as possible during the transmission process of the sorting area, that is, it ensures that the circuit board is in a relatively stable transmission state in the sorting area without bumps and vibrations.

[0026] According to one embodiment of the present invention, the sorting mechanism includes a first rolling shaft, a second rolling shaft, a third rolling shaft and a fourth rolling shaft, the axes of the four rolling shafts are located in the same horizontal plane, the first rolling shaft and the third rolling shaft are placed in parallel, the second rolling shaft and the fourth rolling shaft are coaxial, the first rolling shaft and the third rolling shaft are symmetrically placed on both sides of the second rolling shaft and the fourth rolling shaft, the first rolling shaft and the third rolling shaft are longer and are provided with pulleys on both sides, the second rolling shaft and the fourth rolling shaft are shorter and are only provided with pulleys on the inner sides, the second rolling shaft and the fourth rolling shaft are connected by a connecting shaft, a transfer shaft is provided under the four rolling shafts, pulleys are provided on both sides of the transfer shaft, a transfer shaft fixing piece is provided on the outer side of the pulley, a coaxial first rotating wheel is provided on the transfer shaft, and a transfer shaft is provided under A sorting base plate is provided, a coaxial second rotating wheel is provided on the sorting base plate, and a rotating gear is provided under the sorting base plate; and the second rotating wheel is connected with a coaxial transmission shaft, the top end of the transmission shaft is connected to the second rotating wheel, the transmission shaft passes through the rotating gear, and a coaxial third pulley is provided at the bottom of the transmission shaft; and the first rolling shaft pulley and the second rolling shaft pulley are connected to the pulley on one side of the rotating shaft through the second belt, and the third rolling shaft pulley and the fourth rolling shaft pulley are connected to the pulley on the other side of the rotating shaft through the third belt; and a sorting base is vertically provided on the edge of the sorting base plate, and a fixing hole is provided on the sorting base; and the first rotating wheel and the second rotating wheel can be meshed and rotated; and a sorting top plate is provided on the sorting mechanism, and the sorting top plate is provided with a slot, and a sorting fixing part is provided under the sorting top plate.

[0027] The sorting mechanism of the present invention drives the second rotating wheel to rotate by rotating the third pulley, and the second rotating wheel meshes with the first rotating wheel to drive the first rotating wheel to rotate. The first rotating wheel is arranged on the central rotating shaft, and the pulleys arranged on both sides of the central rotating shaft respectively drive the first rolling shaft, the second rolling shaft, the third rolling shaft and the fourth rolling shaft to rotate. The present invention adopts the third pulley to drive the rotation of each pulley through the design of the sorting mechanism, which is beneficial to the utilization rate of the overall space, and can more accurately control the rotation speed of the rotating shaft, which is beneficial to improving the overall stability and balance. At the same time, the sorting mechanism of the present invention can operate independently, which can greatly reduce the possibility of resonance in the sorting area, which is beneficial to reducing the damage to the circuit board during transportation, and in the long-term use and production process, it is beneficial to extend the machine life and reduce the labor maintenance cost.

[0028] The present invention also provides a method for detecting the thickness of an OSP film, the steps of the detection method comprising:

[0029] S1: placing the circuit board on the first conveyor belt;

[0030] S2: The first conveyor belt smoothly transports the circuit board under the control of the correction component and the conveyor belt stabilization device, and the circuit board also moves along the predetermined area under the action of the blocking component;

[0031] S3: The circuit board is scanned by a scanner in the conveying area, and the scanner sends the data to the industrial computer;

[0032] S4: After the circuit board passes through the conveying area, it arrives at the sorting area. The industrial control machine controls the direction of the sorting mechanism to guide the defective circuit boards to be transported to the second rolling conveyor belt to discharge the defective circuit boards.

[0033] S5: The qualified circuit boards pass through the sorting mechanism and arrive at the second conveyor belt. The second conveyor belt conveys the qualified circuit boards to the next place to complete the inspection.

[0034] Compared with the prior art, the present invention has the following beneficial effects: (1) fully automatic sorting of circuit boards without manual operation; (2) the addition of a conveyor belt stabilizer, a material blocking assembly, and a correction assembly greatly improves the overall operation stability and reduces damage to circuit boards; (3) the sorting mechanism operates smoothly, with precise and sensitive steering, which improves efficiency and reduces the breakage rate of circuit boards; (4) very little dust is generated during the overall operation, which prolongs the machine life and reduces labor maintenance costs during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the OSP film thickness detection device;

[0036] Figure 2 This is the second level side view of the transfer area;

[0037] Figure 3 This is the second level side view of the sorting area;

[0038] Figure 4 This is a top view of the sorting area;

[0039] Figure 5 To correct the exploded view of the assembly;

[0040] Figure 6 To correct the overall diagram of the component;

[0041] Figure 7 To correct the overall top view of the component;

[0042] Figure 8 To correct the schematic diagram of the assembly base;

[0043] Fig. 9 It is a schematic diagram of the material blocking component;

[0044] Fig.10 It is the overall second-class side view of the material blocking assembly;

[0045] Fig.11 This is an enlarged view of the material blocking column;

[0046] Fig.12 It is the left and right side view of the conveyor belt stabilization device;

[0047] Fig.13 It is a front view of the conveyor belt stabilizing device;

[0048] Fig.14 It is the left and right side view of the sorting mechanism;

[0049] Fig.15 This is an exploded view of the sorting mechanism;

[0050] Fig.16 This is a schematic diagram of the interior of the sorting mechanism.

[0051] Figure numbers: 1. Conveying area, 101. First conveyor belt, 102. Conveying area base, 103. Scanner, 2. Sorting area, 201. Sorting area base, 202. First rolling conveyor belt, 203. Sorting assembly, 204. Carrying plate, 206. Second conveyor belt, 207. Second rolling conveyor belt, 300. Correction assembly, 310. First correction member, 311. First clamping block, 312. First rotating plate, 313. Correction spindle, 314. Base, 315. Second rotating rod, 316. Rubber block, 330. Third rotating plate, 400. Material blocking assembly, 401. Material blocking base, 402. Material blocking fixing plate, 410. Buffer assembly, 411. Buffer column, 412. 2. Columnar connecting member, 413. Material blocking rod, 414. Material blocking fixing member, 415. Spring, 500. Conveyor belt stabilizing device, 510. Shock-absorbing rotating shaft, 511. First belt, 520. First shock-absorbing plate, 530. Auxiliary rotating shaft, 540. Second shock-absorbing plate, 600. Sorting mechanism, 610. First rolling shaft, 620. Second rolling shaft, 630. Third rolling shaft, 640. Fourth rolling shaft, 650. Sorting base plate, 660. Sorting base, 670. Rotating gear, 680. Sorting top plate, 681. Sorting fixing member, 700. Central rotating shaft, 701. Central rotating shaft fixing member, 710. First rotating wheel, 720. Second rotating wheel, 730. Transmission shaft. DETAILED DESCRIPTION

[0052] The technical solution of the present invention is further described in detail below in conjunction with specific implementations and drawings:

[0053] Embodiment 1:

[0054] An OSP film thickness detection device, comprising:

[0055] like Figure 1 , 2 As shown, the conveying area 1 includes a first conveyor belt 101, which is arranged on a conveying area base 102. A plurality of correction components 300 and material blocking components 400 are spaced apart on both sides of the first conveyor belt 101, and a scanner 103 is provided on the first conveyor belt 101.

[0056] Compared with the prior art which only has a conveyor belt, the present invention solves the problem that the conveyor belt deviation cannot be corrected quickly and the circuit board cannot be corrected without damage when it deviates. The present invention arranges multiple correction components 300 and material blocking components 400 at intervals on both sides of the first conveyor belt 101. The correction components 300 and the conveyor belt are in contact with each other to ensure that the conveyor belt can be corrected when the conveyor belt deviates, which is beneficial to the stability of the operation of the entire device and prevents the conveyor belt from shaking or stopping after the transmission deviation occurs. The above situations will cause different damages to the OSP film. At the same time, the present invention also arranges material blocking components 400 on both sides of the first conveyor belt 101. By setting the material blocking components 400, the circuit boards with deviations in some conveying paths can be corrected, which is beneficial for the circuit boards to be accurately scanned when passing through the scanner 103 on the first conveyor belt 101, thereby improving the accuracy of detection, reducing the misjudgment of the accuracy of the detection results due to transmission, and preventing some circuit boards from deviating from the scanning range of the scanner 103 when passing through the scanner 103 and causing misjudgment. In addition, the picking scheme can avoid the use of robots or manual sorting to reduce contact with the circuit boards, thereby reducing or avoiding damage to the surface of the circuit boards or adhesion of dirt.

[0057] like Figure 1 , 3 As shown in Figure 4, the sorting area 2 comprises a sorting area base 201, a first rolling conveyor belt 202 is arranged at the head end of the sorting area base 201, the head end of the first rolling conveyor belt 202 is close to the tail end of the first conveyor belt 101, the tail end of the first rolling conveyor belt 202 is connected with a sorting component 203, the sorting component 203 comprises a carrier plate 204, a closely arranged sorting mechanism 600 is arranged on the carrier plate 204, a second conveyor belt 206 is arranged at the tail end of the carrier plate 204, a second rolling conveyor belt 207 is arranged close to one side of the carrier plate 204, and the second rolling conveyor belt 207 has a fixed angle with the carrier plate 204.

[0058] The present invention is designed with a sorting mechanism 600. After passing through the sorting mechanism 600, the good circuit board enters the second conveyor belt 206, and the defective circuit board will be changed by the sorting mechanism 600 to be conveyed from the second rolling conveyor belt 207. Through the design of the sorting mechanism 600, the good circuit board and the defective circuit board can be sorted without stopping the machine, which greatly improves the sorting efficiency of the circuit board and is conducive to improving the overall efficiency. In the long-term use process, compared with the sorting device that needs to stop the machine, the sorting mechanism 600 of the present invention has a longer service life and higher sorting efficiency.

[0059] like Figure 3 As shown, the first conveyor belt 101, the second conveyor belt 206, the second rolling conveyor belt 207 and the carrier plate 204 are arranged horizontally, and the conveying direction of the first rolling conveyor belt 202 is arranged obliquely upward.

[0060] The scanner 103 and the sorting mechanism 600 are connected to an industrial computer.

[0061] In the present invention, both the scanner 103 and the sorting mechanism 600 are connected to an industrial computer. After the circuit board passes through the scanner 103, the scanner 103 will send the scanning result to the industrial computer, which will analyze the scanning result, identify the good circuit board and the defective circuit board, and send the detected result to the sorting mechanism 600. The sorting mechanism 600 will change the transmission path of the defective circuit board and transmit the defective circuit board to the direction of the second rolling conveyor belt 207. The sorting mechanism 600 will continue to transmit the good circuit board to the second conveyor belt 206. The present invention realizes automatic control and sorting of good and defective circuit boards by designing the scanner 103 and the sorting mechanism 600 to be connected to the industrial computer, reducing labor costs, and also preventing manual contamination and damage to the OSP film.

[0062] like Figure 5 , 6 As shown in Figures 7 and 8, the correction assembly 300 includes two first correction members 310 located on the same side of the first conveyor belt 101. The first correction member 310 includes a first clamping block 311. A through slot is provided on one side of the first clamping block 311. A first rotating plate 312 is hingedly connected below the first clamping block 311. A correction spindle 313 is provided at the bottom of the other end of the first rotating plate 312. A base 314 is provided at the bottom of the correction spindle 313. The slot of the first clamping block 311 faces the first conveyor belt 101. When the first conveyor belt 101 deviates, the first conveyor belt 101 will contact the first clamping block 311 through the slot of the first clamping block 311, forcing the first clamping block 311 to move. The first clamping block 311 will drive the first rotating plate 312 to rotate. The correction spindle 313 will force the first rotating plate 312 to reset, thereby resetting the first clamping block 311. The first clamping block 311 will push the first conveyor belt 101 to reset. The present invention helps prevent the conveyor belt from running off track through the design of the correction component 300, and reduces the weight of the contact between the conveyor belt and the side components when the conveyor belt runs off track, thereby reducing the vibration of the circuit board on the conveyor belt; secondly, the contact between the first clamping block 311 and the conveyor belt helps to maintain the flatness of the conveyor belt, which helps to avoid the deviation of the circuit board on the conveyor belt caused by the inconsistency between the horizontal planes in the middle and the two sides of the conveyor belt; it helps to reduce the friction noise generated by the conveyor belt running off track and the vibration and noise generated by the circuit board due to the vibration of the conveyor belt running.

[0063] like Figure 5 , 8As shown, the bottom of the first rotating plate 312 in the correction component 300 is fixedly connected to a second rotating rod 315, and the second rotating rod 315 is a multi-prism structure. The second rotating rod 315 is inserted into the correction main shaft 313, and the correction main shaft 313 is provided with rubber blocks 316 distributed around the second rotating rod 315. Among them, a third rotating plate 330 is provided between the bottoms of the first clamping blocks 311 of the two first correction members 310 in the correction component 300. Through the design of the correction component 300, the present invention can abut the conveyor belt and transfer the torque to the second rotating rod 315 when the conveyor belt deviates. The rotational force generated by the second rotating rod 315 is transferred to the rubber block 316 to consume the energy generated by the conveyor belt deviation, and the rubber block 316 consumes the energy to help the second rotating rod 315 reset, thereby promoting the reset of the conveyor belt contacting the first clamping block 311. Compared with the prior art, the provision of the rubber block 316 is conducive to elastically adjusting the force magnitude, which helps to make the conveyor belt reset more smoothly, improves the reset efficiency, and reduces the conveyor belt jitter caused by the lateral movement of the conveyor belt, thereby improving the conveying quality of the conveyor belt and also providing protection for the circuit boards transported on the conveyor belt.

[0064] In the present invention, a third rotating plate 330 is provided between the bottoms of the first blocking blocks 311 of the two first correcting members 310 in the correcting assembly 300, which can laterally distribute the deviation force of the conveyor belt at the same position, so that the two first correcting members 310 can correct the conveyor belt. Compared with the prior art, the present invention further improves the stability and shock absorption of the conveyor belt, and further enhances the protection of the conveyor circuit board.

[0065] like Fig. 9 , 10 As shown in 11, the material blocking assembly 400 includes a material blocking base 401, a material blocking fixing plate 402 is provided on the material blocking base 401, and a plurality of buffer assemblies 410 are equidistantly arranged side by side on one side of the material blocking fixing plate 402, and the buffer assembly 410 includes a buffer column 411, and the axis of the buffer column 411 is perpendicular to the material blocking base 401, and the upper and lower ends of the buffer column 411 are respectively provided with columnar connecting members 412, the columnar connecting member 412 is fixedly connected to the head end of the material blocking rod 413, and the middle part of the material blocking rod 413 is hinged to the top end of the material blocking fixing member 414, and the material blocking The fixing piece 414 is trouser-shaped, and the bottom end of the material blocking fixing piece 414 is fixedly connected to the material blocking fixing plate 402. Springs 415 are provided on both sides of the tail end of the material blocking rod 413 to connect with the material blocking fixing piece 414, and the buffer column 411 can rotate relative to the columnar connecting piece 412, and the material blocking fixing plate 402 in the material blocking assembly 400 is provided with a plurality of buffer assemblies 410 located on the same side and facing the first conveyor belt 101, the buffer assembly 410 is located on the upper side of the first conveyor belt 101, and the material blocking base 401 is located on the lower side of the first conveyor belt 101.

[0066] Compared with the prior art, the present invention provides a material stopper assembly 400 that can perform multiple shock absorption on the conveyed circuit board and has steering coordination. For the circuit board that deviates on the conveyor belt, it will contact the collision buffer column 411, and the column body of the buffer column 411 will be offset. At the same time, the buffer column 411 will rotate for buffering, and the rotation will also reduce the impact damage to the circuit board. After the circuit board is reset, the spring 415 connected to the material stopper rod 413 will reset the material stopper rod 413, and the buffer column 411 connected to the material stopper rod 413 will also reset. The present invention is conducive to multiple shock absorption of the conveyed circuit board at the conveying docking point and during the conveying process through the design of the material stopper assembly 400, and can cooperate with steering at the same time; secondly, it can perform multiple buffering and shock absorption treatment on the circuit board after the collision to reduce the collision damage to the circuit board; in the long-term use process, it can effectively reduce the defective rate of the circuit board caused by the collision on the conveyor belt, and improve the product yield and output in disguise; at the same time, it is also conducive to controlling the overall cost. The device has a simple structure and low cost.

[0067] like Fig.12 , 13 As shown, a conveyor belt stabilizing device 500 is provided below the contact surface of the first conveyor belt 101 and the material, and the conveyor belt stabilizing device 500 includes two parallel shock-absorbing shafts 510 that are in rolling contact with the bottom surface of the conveyor belt, the shock-absorbing shaft 510 is provided on the first shock-absorbing plate 520, and the first shock-absorbing plate 520 is connected to the lateral conveying area base 102, an annular groove is provided on the shock-absorbing shaft 510 and a first belt 511 is arranged, an auxiliary shaft 530 is provided below the shock-absorbing shaft 510, the first belt 511 passes through the auxiliary shaft 530, and both sides of the auxiliary shaft 530 are connected to the conveying area base 102, a second shock-absorbing plate 540 is provided above the auxiliary shaft 530, the second shock-absorbing plate 540 is provided with a slot for allowing the first belt 511 to pass, and the second shock-absorbing plate 540 is connected to the conveying area base 102.

[0068] The present invention designs a conveyor belt stabilizing device 500. When the flatness of the conveyor belt surface is affected to a certain extent by the correction device during the conveying process of the first conveyor belt 101, the stabilizing conveying device can play a rolling support role on the bottom surface of the conveyor belt to maintain the flatness of the conveyor belt during operation. During the operation of the first conveyor belt 101, small fluctuations may occur. The small fluctuations may cause the circuit board conveyed by the first conveyor belt 101 to deviate from the predetermined trajectory or cause damage. The present invention designs a conveyor belt stabilizing device 500. When fluctuations occur, the energy of the vibration of the first conveyor belt 101 can be dispersed and consumed, and has a greater shock absorption effect. At the same time, the present invention drives the air flow inside the conveyor belt through the shock-absorbing shaft 510, the auxiliary shaft 530, and the first belt 511, etc., to play a heat dissipation role, and uses the air flow to prevent dust particles from gathering near the conveyor belt, and remove dust particles and floating debris that may exist inside the conveyor belt. In the long-term use process, the overall service life of the machine will be increased, the failure rate will also be reduced, and the cost of manual maintenance will also be reduced.

[0069] The sorting mechanism 600 includes a first rolling shaft 610, a second rolling shaft 620, a third rolling shaft 630 and a fourth rolling shaft 640. The axes of the four rolling shafts are located on the same horizontal plane. The first rolling shaft 610 and the third rolling shaft 630 are placed in parallel. The second rolling shaft 620 and the fourth rolling shaft 640 are coaxial. The first rolling shaft 610 and the third rolling shaft 630 are located between the second rolling shaft 620 and the fourth rolling shaft 640 and are symmetrically placed on both sides. The first rolling shaft 610 and the third rolling shaft 630 are relatively long and are provided with pulleys on both sides. The second rolling shaft 620 and the fourth rolling shaft 640 are arranged on the same axis. The shaft 640 is relatively short and is only provided with a pulley on the inner side. The second rolling shaft 620 and the fourth rolling shaft 640 are connected by a connecting shaft. A driving motor is provided under the four rolling shafts. Each rolling shaft is connected to the driving motor by a belt. A sorting substrate 650 is provided under the driving motor. A sorting base 660 is vertically provided on the edge of the sorting substrate 650. A fixing hole is provided on the sorting base 660. A rotating gear 670 is provided under the sorting substrate 650. A sorting top plate 680 is provided on the sorting mechanism 600. The sorting top plate 680 is provided with a slot, and a sorting fixing part 681 is provided under the sorting top plate 680.

[0070] The sorting mechanism 600 of the present invention is connected to each rolling shaft and the driving motor through a belt, and the driving motor drives each rolling shaft to rotate in the same direction, which is conducive to keeping each rolling shaft in synchronous operation, preventing the circuit board from deviating or rotating, and is conducive to realizing accurate control of the circuit board route. At the same time, the present invention is provided with a rotating gear 670 under the sorting substrate 650, and the rotation direction of the whole sorting mechanism 600 can be controlled by rotating the rotating gear 670. The angles of different sorting mechanisms 600 of the sorting assembly 203 are controlled by the industrial computer, so as to control the transmission routes of circuit boards at different positions, and the unqualified circuit boards are diverted to the second rolling conveyor belt 207 for transmission. The present invention realizes the transmission guidance of the circuit board to realize the circuit board sorting through the design of the sorting mechanism 600, avoids the use of a robot or manual sorting, reduces the contact with the circuit board, and thus reduces or avoids the damage or adhesion of dirt on the surface of the circuit board. At the same time, the contact of the four rotating shafts ensures the effective transmission of the circuit board and ensures as much as possible that the circuit board is in continuous contact with the surface of each rotating shaft during the transmission process in the sorting area 2, that is, it ensures that the circuit board is in a relatively stable transmission state in the sorting area 2 without bumps and vibrations.

[0071] The present invention also provides a method for detecting the thickness of an OSP film, the steps of the detection method comprising:

[0072] S1: placing a circuit board on the first conveyor belt 101;

[0073] S2: The first conveyor belt 101 transports the circuit board smoothly under the control of the correction component 300 and the conveyor belt stabilizing device 500, and the circuit board also moves along the predetermined area under the action of the blocking component 400;

[0074] S3: The circuit board is scanned by the scanner 103 in the conveying area 1, and the scanner 103 sends the data to the industrial computer;

[0075] S4: After the circuit board passes through the conveying area 1 and arrives at the sorting area 2, the industrial control machine controls the direction of the sorting mechanism 600 to guide the defective circuit boards to be conveyed toward the second rolling conveyor belt 207 to be discharged;

[0076] S5: The qualified circuit boards pass through the sorting mechanism 600 and arrive at the second conveyor belt 206. The second conveyor belt 206 conveys the qualified circuit boards to the next location to complete the inspection.

[0077] An embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.

[0078] Embodiment 2:

[0079] In the above-mentioned embodiments or variations, a design of the sorting mechanism 600 in the sorting area 2 is exemplified and described, but the sorting mechanism 600 may be further designed to make the operation more stable and accurate. Fig.14 , 15 As shown in , 16, the sorting mechanism 600 includes a first rolling shaft 610, a second rolling shaft 620, a third rolling shaft 630 and a fourth rolling shaft 640, the axes of the four rolling shafts are located in the same horizontal plane, the first rolling shaft 610 and the third rolling shaft 630 are placed in parallel, the second rolling shaft 620 and the fourth rolling shaft 640 are coaxial, the first rolling shaft 610 and the third rolling shaft 630 are located between the second rolling shaft 620 and the fourth rolling shaft 640 and are symmetrically placed on both sides, the first rolling shaft 610 and the third rolling shaft 630 are longer and are provided with pulleys on both sides, the second rolling shaft 620 and the fourth rolling shaft 640 are shorter and are only provided with pulleys on the inner side, the second rolling shaft 620 and the fourth rolling shaft 640 are connected by a connecting shaft, a rotating shaft 700 is provided under the four rolling shafts, pulleys are provided on both sides of the rotating shaft 700, a rotating shaft fixing part 701 is provided on the outer side of the pulley, a coaxial first rotating wheel 710 is provided on the rotating shaft 700, and a sorting substrate is provided under the rotating shaft 700 650, a coaxial second rotating wheel 720 is provided on the sorting substrate 650, and a rotating gear 670 is provided under the sorting substrate 650; and the second rotating wheel 720 is connected with a coaxial transmission shaft 730, the top of the transmission shaft 730 is connected to the second rotating wheel 720, the transmission shaft 730 passes through the rotating gear 670, and a coaxial third belt pulley 740 is provided at the bottom of the transmission shaft 730; and the first rolling shaft 610 belt pulley and the second rolling shaft 620 belt pulley are connected to the belt pulley on one side of the middle rotating shaft 700 through the second belt. The third rolling shaft 630 pulley and the fourth rolling shaft 640 pulley are connected with the pulley on the other side of the transfer shaft 700 through the third belt; and a sorting base 660 is vertically provided on the edge of the sorting substrate 650, and a fixing hole is provided on the sorting base 660; and the first rotating wheel 710 and the second rotating wheel 720 can be meshed and rotated; and a sorting top plate 680 is provided on the sorting mechanism 600, and the sorting top plate 680 is provided with a slot, and a sorting fixing part 681 is provided under the sorting top plate 680.

[0080] The sorting mechanism 600 of the present invention drives the second rotating wheel 720 to rotate by rotating the third pulley 740, and the second rotating wheel 720 and the first rotating wheel 710 are meshed with each other to drive the first rotating wheel 710 to rotate, and the first rotating wheel 710 is arranged on the central rotating shaft 700, and the pulleys arranged on both sides of the central rotating shaft 700 respectively drive the first rolling shaft 610, the second rolling shaft 620, the third rolling shaft 630 and the fourth rolling shaft 640 to rotate. The present invention adopts the third pulley 740 to drive the rotation of each pulley through the design of the sorting mechanism 600, which is beneficial to the utilization rate of the overall space, and can more accurately control the rotation speed of the rotating shaft, which is beneficial to improve the overall stability and balance. At the same time, the sorting mechanism 600 of the present invention can be operated independently, which can greatly reduce the possibility of resonance in the sorting area 2, which is beneficial to reducing the damage to the circuit board during transportation, and in the long-term use and production process, it is beneficial to extend the machine life and reduce the labor maintenance cost.

[0081] The embodiments described above provide a detailed description of the technical solutions of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, supplements or similar substitutions made within the scope of the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An OSP film thickness detection device, comprising: A conveying area (1), the conveying area (1) comprising a first conveying belt (101), the first conveying belt (101) being arranged on a conveying area base (102), a plurality of correction components (300) and material blocking components (400) being arranged at intervals on both sides of the first conveying belt (101), and a scanner (103) being arranged on the first conveying belt (101); A sorting area (2), the sorting area (2) comprising a sorting area base (201), a first rolling conveyor belt (202) being arranged at the head end of the sorting area base (201), the head end of the first rolling conveyor belt (202) being close to the tail end of the first conveyor belt (101), the tail end of the first rolling conveyor belt (202) being connected to a sorting component (203), the sorting component (203) comprising a carrier plate (204), the carrier plate (204) being provided with closely arranged sorting mechanisms (600), the tail end of the carrier plate (204) being provided with a second conveyor belt (206), a second rolling conveyor belt (207) being closely arranged on one side of the carrier plate (204), the second rolling conveyor belt (207) and the carrier plate (204) having a fixed angle; Wherein, the first conveyor belt (101), the second conveyor belt (206), the second rolling conveyor belt (207) and the carrier plate (204) are arranged horizontally, and the conveying direction of the first rolling conveyor belt (202) is arranged obliquely upward; Wherein, the scanner (103) and the sorting mechanism (600) are connected to the industrial computer; The scanner (103) and the sorting mechanism (600) are connected to an industrial computer. After the circuit board passes through the scanner (103), the scanner (103) sends the scanning result to the industrial computer. The industrial computer analyzes the scanning result, identifies good circuit boards and defective circuit boards, and sends the detected result to the sorting mechanism (600). The sorting mechanism (600) changes the conveying path of the defective circuit boards and conveys the defective circuit boards to the direction of the second rolling conveyor belt (207). The sorting mechanism (600) conveys the good circuit boards to the second conveyor belt (206). The sorting mechanism (600) comprises a first rolling shaft (610), a second rolling shaft (620), a third rolling shaft (630) and a fourth rolling shaft (640), wherein the axes of the four rolling shafts are located on the same horizontal plane, the first rolling shaft (610) and the third rolling shaft (630) are placed in parallel, the second rolling shaft (620) and the fourth rolling shaft (640) are coaxial, the first rolling shaft (610) and the third rolling shaft (630) are located between the second rolling shaft (620) and the fourth rolling shaft (640) and are symmetrically placed on both sides, the first rolling shaft (610) and the third rolling shaft (630) are relatively long and are provided with pulleys on both sides, The second rolling shaft (620) and the fourth rolling shaft (640) are relatively short and only have pulleys on their inner sides; the second rolling shaft (620) and the fourth rolling shaft (640) are connected via a connecting shaft; a central rotating shaft (700) is provided below the four rolling shafts; pulleys are provided on both sides of the central rotating shaft (700); a central rotating shaft fixing member (701) is provided outside the pulleys; a coaxial first rotating wheel (710) is provided on the central rotating shaft (700); a sorting substrate (650) is provided below the central rotating shaft (700); a coaxial second rotating wheel (720) is provided on the sorting substrate (650); and a rotating gear (670) is provided below the sorting substrate (650); A sorting base (660) is vertically arranged on the edge of the sorting substrate (650), and a fixing hole is arranged on the sorting base (660). Wherein, the sorting mechanism (600) is provided with a sorting top plate (680), the sorting top plate (680) is provided with slots, and a sorting fixing part (681) is provided below the sorting top plate (680); The second rotating wheel (720) is connected to a coaxial transmission shaft (730), the top of the transmission shaft (730) is connected to the second rotating wheel (720), the transmission shaft (730) passes through the rotating gear (670), and the bottom of the transmission shaft (730) is provided with a coaxial third pulley (740); The first rolling shaft (610) pulley and the second rolling shaft (620) pulley are connected to the pulley on one side of the rotating shaft (700) via a second belt, and the third rolling shaft (630) pulley and the fourth rolling shaft (640) pulley are connected to the pulley on the other side of the rotating shaft (700) via a third belt; Wherein, the first rotating wheel (710) and the second rotating wheel (720) can mesh and rotate; The sorting mechanism (600) drives the second rotating wheel (720) to rotate by rotating the third belt pulley (740); the second rotating wheel (720) and the first rotating wheel (710) are meshed with each other to drive the first rotating wheel (710) to rotate; the first rotating wheel (710) is arranged on the central rotating shaft (700); belt pulleys arranged on both sides of the central rotating shaft (700) respectively drive the first rolling shaft (610), the second rolling shaft (620), the third rolling shaft (630) and the fourth rolling shaft (640) to rotate.

2. The OSP film thickness detection device according to claim 1, characterized in that: The correction component (300) comprises two first correction members (310) located on the same side of the first conveyor belt (101), the first correction member (310) comprising a first clamping block (311), one side of the first clamping block (311) being provided with a through slot, a first rotating plate (312) being hingedly connected below the first clamping block (311), a correction spindle (313) being provided at the bottom of the other end of the first rotating plate (312), and a base (314) being provided at the bottom of the correction spindle (313); Wherein, the first clamping block is slotted toward the first conveyor belt (101).

3. The OSP film thickness detection device according to claim 2, characterized in that: A second rotating rod (315) is fixedly connected to the bottom of the first rotating plate (312) in the correction component (300); the second rotating rod (315) is a multi-prism structure; the second rotating rod (315) is inserted into the correction main shaft (313); and rubber blocks (316) are arranged in the correction main shaft (313) and distributed around the second rotating rod (315); Wherein, a third rotating plate (330) is provided between the bottoms of the first clamping blocks (311) of the two first correcting members (310) in the correcting assembly (300).

4. The OSP film thickness detection device according to claim 3 is characterized in that: The material blocking assembly (400) comprises a material blocking base (401), a material blocking fixing plate (402) is provided on the material blocking base (401), a plurality of buffer assemblies (410) are arranged side by side and equidistantly on one side of the material blocking fixing plate (402), the buffer assembly (410) comprises a buffer column (411), the axis of the buffer column (411) is perpendicular to the material blocking base (401), the upper and lower ends of the buffer column (411) are respectively provided with columnar connecting members (412), the columnar connecting member (412) is fixedly connected to the head end of a material blocking rod (413), the middle part of the material blocking rod (413) is hinged to the top end of a material blocking fixing member (414), the material blocking fixing member (414) is trouser-shaped, the bottom end of the material blocking fixing member (414) is fixedly connected to the material blocking fixing plate (402), and springs (415) are provided on both sides of the tail end of the material blocking rod (413) to connect with the material blocking fixing member (414); Wherein, the buffer column (411) can rotate relative to the columnar connecting member (412); The material blocking fixing plate (402) in the material blocking assembly (400) is provided with a plurality of buffer assemblies (410) located on the same side and facing the first conveyor belt (101); the buffer assemblies (410) are located on the upper side of the first conveyor belt (101); and the material blocking base (401) is located on the lower side of the first conveyor belt (101).

5. The OSP film thickness detection device according to claim 1, characterized in that: A conveyor belt stabilizing device (500) is provided below the contact surface between the first conveyor belt (101) and the material. The conveyor belt stabilizing device (500) comprises two parallel damping shafts (510) in rolling contact with the bottom surface of the conveyor belt. The damping shafts (510) are provided on a first damping plate (520). The first damping plate (520) is connected to the lateral conveying area base (102). An annular groove is provided on the damping shaft (510) and a first belt (5 11), an auxiliary rotating shaft (530) is arranged below the shock-absorbing rotating shaft (510), the first belt (511) passes through the auxiliary rotating shaft (530), both sides of the auxiliary rotating shaft (530) are connected to the transmission area base (102), a second shock-absorbing plate (540) is arranged above the auxiliary rotating shaft (530), the second shock-absorbing plate (540) is provided with a slot for allowing the first belt (511) to pass through, and the second shock-absorbing plate (540) is connected to the transmission area base (102).

6. A method for detecting the thickness of an OSP film, characterized in that: Using the OSP film thickness detection device as described in any one of claims 1 to 5, the steps of the detection method include: S1: placing a circuit board on a first conveyor belt (101); S2: The first conveyor belt (101) smoothly transports the circuit board under the control of the correction component (300) and the conveyor belt stabilizing device (500), and the circuit board also moves along the predetermined area under the action of the material blocking component (400); S3: The circuit board is scanned by a scanner (103) in the conveying area (1), and the scanner (103) sends the data to the industrial computer; S4: After the circuit board passes through the conveying area (1), it arrives at the sorting area (2), and the industrial control machine controls the direction of the sorting mechanism (600) to guide the defective circuit boards to be conveyed in the direction of the second rolling conveyor belt (207) to be discharged; S5: The qualified circuit boards pass through the sorting mechanism (600) and arrive at the second conveyor belt (206). The second conveyor belt (206) conveys the qualified circuit boards to the next location to complete the inspection.

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