阅读说明：本技术 一种pcb板的检测装置 (Detection apparatus for PCB board ) 是由 孔繁源 陈定康 于 2019-11-18 设计创作，主要内容包括：本发明提供一种PCB板的检测装置,包括驱动部件和运输通道,所述运输通道的两端分别为进料口和出料口,所述运输通道的两侧设置有传输部件,所述传输部件由驱动部件驱动连接,运输通道上还设置有止挡部件,所述止挡部件设置在出料口的侧壁上、与传输部件的位置相对应,所述止挡部件或高于或低于传输部件与工件接触的工作面,所述运输通道上还设置夹紧部件,当止挡部件高于传输部件与工件接触的工作面时,夹紧部件夹紧工件,当止挡部件低于传输部件与工件接触的工作面时,夹紧部件呈张开状态低于所述工作面。本发明提供一种能提前减速、输送装置指令简单、检测效率高、不容易损坏电路板的检测装置。(The invention provides a PCB detection device, which comprises a driving part and a transportation channel, wherein a feed inlet and a discharge outlet are respectively arranged at two ends of the transportation channel, transmission parts are arranged at two sides of the transportation channel and are in driving connection with the driving part, a stopping part is further arranged on the transportation channel, the stopping part is arranged on the side wall of the discharge outlet and corresponds to the position of the transmission part, the stopping part is higher than or lower than the working surface of the transmission part contacted with a workpiece, a clamping part is further arranged on the transportation channel, when the stopping part is higher than the working surface of the transmission part contacted with the workpiece, the clamping part clamps the workpiece, and when the stopping part is lower than the working surface of the transmission part contacted with the workpiece, the clamping part is lower than the working surface in an opening state. The invention provides a detection device which can decelerate in advance, has simple instruction of a conveying device and high detection efficiency and is not easy to damage a circuit board.)

1. The detection device for the PCB is characterized by comprising a driving part (1) and a conveying channel (2), wherein a feeding hole (3) and a discharging hole (4) are formed in two ends of the conveying channel (2) respectively, transmission parts (5) are arranged on two sides of the conveying channel (2), the transmission parts (5) are in driving connection with the driving part (1), a stop part (6) is further arranged on the conveying channel (2), the stop part (6) is arranged on the side wall of the discharging hole (4) and corresponds to the transmission parts (5), the stop part (6) is higher than or lower than a working surface (7) of the transmission parts (5) in contact with a workpiece, a clamping part (8) is further arranged on the conveying channel (2), and when the stop part (6) is higher than the working surface (7) of the transmission parts (5) in contact with the workpiece, the clamping part (8) clamps the workpiece, when the stop member (6) is lower than the working surface (7) of the transmission member (5) contacting the workpiece, the clamping member (8) is lower than the working surface (7) in the open state.

2. The PCB detecting device of claim 1, wherein the conveying component (5) is a plurality of conveying rollers (9), the conveying rollers (9) are uniformly distributed along the conveying direction of the conveying channel (2), and the conveying rollers (9) are driven by the driving component (1) to rotate.

3. The PCB detecting device according to claim 2, wherein 1-2 speed-reducing rollers (10) are further arranged in the conveying roller (9), the speed-reducing rollers (10) are driven by a speed-reducing motor, the rotation direction of the speed-reducing rollers (10) is opposite to the rotation direction of the conveying roller (9), and the speed-reducing rollers (10) are arranged at one end close to the discharging port (4) at intervals.

4. The PCB detection device according to claim 3, wherein the outer ring of the deceleration roller (10) is provided with a silica gel layer (11).

5. The PCB board detection device according to claim 2, wherein the stop part (6) comprises a stop member (12) and a cam (13), the bottom of the stop member (12) is in contact with the cam (13), the stop member motor drives the cam (13) to drive the stop member (12) to slide up and down along the side wall of the transportation channel (2), the stop member (12) is provided with a pre-clamping mechanism (14), the pre-clamping mechanism (14) is arranged in a contraction cavity (15), the contraction cavity (15) is a cross-shaped cavity, the cross-shaped cavity comprises a transverse cavity (16) extending along the transportation direction and a longitudinal cavity (17) extending along the vertical direction, the pre-clamping mechanism (14) comprises a movable plate (18) and pre-clamping plates (19) positioned at two sides of the movable plate (18), the movable plate (18) slides along the transverse cavity (16), the pre-clamping plates (19) are close to or far away from each other along a longitudinal cavity (17), one end, far away from the transmission part (5), of the movable plate (18) is connected with a transition column (20), the side face, corresponding to the pre-clamping plates (19), of the transition column (20) is a transition curved surface (21), the transition curved surface (21) is a smooth curved surface from low to high along the transportation direction, one end of the transition column (20) is connected with the side wall of the transverse cavity (16) through a return spring, one end, far away from the transmission part (5), of each pre-clamping plate (19) is provided with a connecting column (22) in the vertical direction, the lower end of each connecting column (22) is in contact with the transition curved surface (21), the two pre-clamping plates (19) are connected through a vertically arranged connecting spring (23), the movable plate (18) is provided with a through groove (24) arranged in the transverse direction, and the connecting spring (, move transversely along the through slot (24).

6. The PCB detecting device of claim 5, wherein the clamping component (8) comprises a fixed clamping jaw (25) and a clamping jaw (26), the fixed clamping jaw (25) is fixedly arranged on the side wall of the transportation channel (2), a sliding rod (27) arranged along the vertical direction is arranged on the side wall, the clamping jaw (26) comprises a plurality of clamping plates (28), the clamping plates (28) are arranged between the transmission rollers (9), the clamping plates (28) are fixedly connected with a connecting plate (29), the connecting plate (29) is sleeved on the sliding rod (27), a poking rod (30) is arranged below the connecting plate (29), and the poking rod (30) is sleeved on the sliding rod (27).

7. The PCB detection device according to claim 6, wherein the stop member (12) is further provided with a linkage block (31), and the linkage block (31) is fixedly connected with the poke rod (30).

8. The PCB detection device according to claim 7, wherein a return spring (32) is further sleeved on the sliding rod (27), and the return spring (32) is arranged between the connecting plate (29) and the fixed jaw (25).

9. The PCB detecting device of claim 7, wherein the stop piece (12) is further provided with a square groove (33), the linkage block (31) is clamped in the square groove (33) and slides along the square groove (33), and a delay spring (34) which stretches and contracts in the vertical direction is arranged between the linkage block (31) and the square groove (33).

10. A PCB board inspection device according to claim 3, wherein a photoelectric sensor (35) is arranged between the deceleration roller (10) and the previous transport roller (9) in the transport direction.

Technical Field

The invention relates to the technical field of printed circuit board detection, in particular to a PCB detection device.

Background

After the PCB is manufactured, generally, Automatic Optical Inspection (AOI) is required to be performed on the PCB, which is a high-speed and high-precision Optical image Inspection system, and machine vision is used as a standard Inspection technology, so that the defects of the conventional Inspection using an Optical instrument by manpower can be overcome.

Taking the detection of the SMT mounting chip circuit board as an example, when the detection is carried out automatically, the machine automatically scans the PCB through the camera, acquires images, compares the tested welding points with qualified parameters in the database, inspects the defects on the PCB through image processing, and displays/marks the defects through a display or an automatic mark for maintenance personnel to repair. The circuit board that prior art will wait to detect sends into detection device fixed detection fast, and it will control conveyor transportation, stops operations such as press from both sides tightly, and control unit operating instruction is many, and the efficiency of pressing from both sides and getting is not high.

Therefore, it is necessary to design a detection device which can decelerate in advance, has simple instruction of the conveying device, high detection efficiency and is not easy to damage the circuit board.

Disclosure of Invention

The invention aims to provide a detection device which can decelerate in advance, has simple instruction of a conveying device and high detection efficiency and is not easy to damage a circuit board.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a detection apparatus for PCB board, includes driver part and transportation passageway, the both ends of transportation passageway are feed inlet and discharge gate respectively, the both sides of transportation passageway are provided with transmission part, transmission part is connected by the driver part drive, still is provided with backstop part on the transportation passageway, backstop part sets up on the lateral wall of discharge gate, corresponding with transmission part's position, backstop part or be higher than or be less than the working face of transmission part and work piece contact, still set up clamping part on the transportation passageway, when backstop part is higher than the working face of transmission part and work piece contact, clamping part presss from both sides tight work piece, and when backstop part is less than the working face of transmission part and work piece contact, clamping part is opened the state and is less than the working face.

Through adopting above-mentioned technical scheme, in the actual detection, adopt feeder equipment with the PCB board on feeding to transmission parts from the feed inlet, transmission parts transports the PCB board to discharge gate department, when transporting to being close to the discharge gate, backstop part is higher than the peak of transmission parts this for the working face, the PCB board of transmission on the transmission parts is backstopd by backstop part, clamping part rises until lifting up the PCB board and breaking away from transmission parts and pressing from both sides from the position that is less than the working face this moment, then detect the comparison with optical influence camera on the PCB board, after detecting, backstop part descends to below the working face, give way to the transportation working face, clamping part descends and accomodates below transmission parts, the PCB board is along with descending to contact pivoted transmission parts, directly transmit to ejection of compact discharge gate by transmission parts again.

As a further arrangement of the conveying device, the conveying parts are conveying rollers, the conveying rollers are arranged in a plurality of numbers, the conveying rollers are uniformly distributed along the conveying direction of the conveying channel, and the conveying rollers are driven by the driving parts to rotate.

Through adopting above-mentioned technical scheme, transmission component is the gyro wheel, and transmission efficiency is high, convenient maintenance and change.

As a further arrangement of the invention, 1-2 speed reduction rollers are also arranged in the transmission rollers, the speed reduction rollers are driven by a speed reduction motor, the rotation direction of the speed reduction rollers is opposite to that of the transmission rollers, and the speed reduction rollers are arranged at one end close to the discharge hole at intervals.

Through adopting above-mentioned technical scheme, the speed reduction gyro wheel that sets up can evenly slow down the PCB board of high-speed transmission to the speed reduction gyro wheel is by gear motor independent control, the gyro wheel is mechanical gyro wheel when need not slow down, along with the transportation atress roll of PCB board, does not hinder the high-speed transmission of PCB board, when needs slow down to the PCB board, gear motor drive speed reduction gyro wheel rotates, effectively reduces the speed of PCB board, need not reduce the normal rotation rate of other transmission gyro wheels, convenient operation.

As a further arrangement of the invention, the outer ring of the speed reducing roller is provided with a silica gel layer.

Through adopting above-mentioned technical scheme, the silica gel layer can increase the contact resistance with the PCB board, improves the efficiency that the PCB board slowed down.

As a further arrangement of the invention, the stopping component comprises a stopping part and a cam, the bottom of the stopping part is in contact with the cam, the stopping motor drives the cam to drive the stopping part to slide up and down along the side wall of the transportation channel, the stopping part is provided with a pre-clamping mechanism, the pre-clamping mechanism is arranged in a contraction cavity, the contraction cavity is a cross cavity, the cross cavity comprises a transverse cavity extending along the transportation direction and a longitudinal cavity extending along the vertical direction, the pre-clamping mechanism comprises a movable plate and pre-clamping plates positioned at two sides of the movable plate, the movable plate slides along the transverse cavity, the pre-clamping plates are close to or far away from each other along the longitudinal cavity, one end of the movable plate far away from the transmission component is connected with a transition column, the side surface of the transition column corresponding to the pre-clamping plates is a transition curved surface, and the transition curved surface is, one end of the transition column is connected with the side wall of the transverse cavity through a return spring, one end, far away from the transmission part, of each pre-clamping plate is provided with a connecting column in the vertical direction, the lower end of each connecting column is in contact with the transition curved surface, the two pre-clamping plates are connected through a vertically arranged connecting spring, the movable plate is provided with a through groove which is transversely arranged, and the connecting springs penetrate through the through grooves and transversely move along the through grooves.

By adopting the technical scheme, the stop component controls the up-and-down movement through the cam, so that the stop component is higher than the highest point of the transmission roller to stop the PCB, or is lower than the highest point of the transmission roller to not hinder the transportation and the passing of the PCB, the pre-clamping mechanism on the stop component can perform the functions of buffering, speed reduction and pre-clamping on the PCB, when the transition position between the highest point and the lowest point of the cam is contacted with the bottom of the stop component, the movable plate and the PCB are positioned on the same plane, the PCB pushes the movable plate into the transverse cavity due to the transmission function of the transmission roller, the return spring is compressed, the bottoms of the connecting columns on the pre-clamping plate move along the transition curved surface to be contacted with the low curved surface, the two connecting columns are mutually closed to drive the pre-clamping plates to be mutually closed to pre-clamp the PCB, then the cam rotates to the highest point, the stop, the return spring in the transverse cavity rebounds to a free state, the movable plate moves in the opposite direction of the conveying direction, the connecting column is propped away from the curved surface at a high position, the pre-clamping plates are kept away from each other and loosened, and the PCB is separated from the stopping component.

According to the invention, the clamping part comprises a fixed clamping jaw and a clamping jaw, the fixed clamping jaw is fixedly arranged on the side wall of the transportation channel, a sliding rod arranged along the vertical direction is arranged on the side wall, the clamping jaw comprises a plurality of clamping plates, the clamping plates are arranged between the transmission rollers and fixedly connected with a connecting plate, the connecting plate is sleeved on the sliding rod, a poking rod is arranged below the connecting plate, and the poking rod is sleeved on the sliding rod.

Through adopting above-mentioned technical scheme, fixed jack catch and clamping jaw draw close each other and form the tight operation of clamp, and the mutual separation is for unclamping the state, and when not pressing from both sides tight PCB board at ordinary times, press from both sides tight jack catch and accomodate under the transmission gyro wheel, when needs press from both sides the PCB board tightly, lift up and press from both sides tight jack catch, lift up the PCB board, with the separation of transmission gyro wheel, realize the tight location of clamp of PCB board.

As a further arrangement of the invention, the stop piece is also provided with a linkage block which is fixedly connected with the poke rod.

As a further arrangement of the invention, the sliding rod is also sleeved with a return spring, and the return spring is arranged between the connecting plate and the fixed clamping jaw.

By adopting the technical scheme and adopting a linkage mode, the stop component controls the up-and-down movement through the cam, so that the stop component is higher than the highest point of the transmission roller to stop the PCB, or is lower than the highest point of the transmission roller to not hinder the transportation and passing of the PCB, the pre-clamping mechanism on the stop component can perform buffering, speed reducing and pre-clamping functions on the PCB, when the transition position between the highest point and the lowest point of the cam is contacted with the bottom of the stop component, the movable plate and the PCB are positioned on the same plane, the PCB pushes the movable plate into the transverse cavity due to the transmission function of the transmission roller, the return spring is compressed, the bottoms of the connecting columns on the pre-clamping plate move along the transition curved surface and are contacted with the low curved surface, the two connecting columns are mutually closed to drive the pre-clamping plates to mutually close to pre-clamp the PCB, then the cam rotates to the, the decelerating roller stops rotating, the PCB loses the transmission acting force of the transmission component, the return spring in the transverse cavity rebounds to a free state, the movable plate moves along the reverse direction of the transmission direction, the connecting column is propped by the curved surface at the high position to be away from each other, the pre-clamping plates are away from each other to be loosened, the PCB is separated from the stopping component, at the moment, the linkage block on the stop part drives the poke rod to move upwards to drive the clamping jaw to move upwards to be close to and clamp the PCB, when the cam rotates to the transition position, the clamping claw is far away from the fixed claw under the reset action of the reset spring, and the PCB is conveyed to the transmission roller by the driving action of the linkage block, and the PCB still needs time to accelerate from rest, therefore, the movable plate cannot be impacted, the cam rotates to the lowest point to contact the stop piece, the stop piece slides to the position below the highest point of the transmission roller under the action of gravity, and the transmission roller transmits the PCB to discharge.

As a further arrangement of the invention, the stop piece is also provided with a square groove, the linkage block is clamped in the square groove and slides along the square groove, and a delay spring which stretches and retracts along the vertical direction is arranged between the linkage block and the square groove.

Through adopting above-mentioned technical scheme, can make full use of the transmission kinetic energy before the PCB board carry out the tight operation of clamp in advance to the PCB board, improve the tight location effect of clamp of PCB board, improve the speed reduction effect of PCB board.

As a further arrangement of the invention, a photoelectric sensor is arranged between the speed reduction roller and the previous transmission roller along the transportation direction.

Through adopting above-mentioned technical scheme, when photoelectric sensor sensed the PCB board, transmission signal gave the controller, and the controller control gear motor drive speed reduction gyro wheel rotates, carries out the speed reduction operation to the PCB board, and when the PCB board left photoelectric sensor, gear motor stopped to rotating, and the speed reduction gyro wheel acts as mechanical gyro wheel and uses.

The beneficial effect of this scheme is:

the stopping component is controlled to move up and down by the cam in a linkage mode, so that the stopping component is higher than the highest point of the transmission roller to stop the PCB, or is lower than the highest point of the transmission roller to not hinder the transportation and the passing of the PCB, the pre-clamping mechanism on the stopping component can perform buffering, speed reducing and pre-clamping functions on the PCB, when the transition position between the highest point and the lowest point of the cam is contacted with the bottom of the stopping component, the movable plate and the PCB are positioned on the same plane, the PCB pushes the movable plate into the transverse cavity due to the transmission function of the transmission roller, the return spring is compressed, the bottoms of the connecting columns on the pre-clamping plate move along the transition curved surface to be contacted with the low curved surface, the two connecting columns are mutually closed to drive the pre-clamping plates to be mutually closed, the PCB is pre-clamped, then the cam rotates to the highest point, the, the PCB loses the transmission acting force of the transmission component, the return spring in the transverse cavity rebounds to a free state, the movable plate moves along the reverse direction of the transmission direction, the connecting columns are propped away from each other by the curved surface at the high position, the pre-clamping plates are kept away from each other and loosened, the PCB is separated from the stop component, at the moment, the linkage block on the stop part drives the poke rod to move upwards to drive the clamping jaw to move upwards to be close to and clamp the PCB, when the cam rotates to the transition position, the clamping claw is far away from the fixed claw under the reset action of the reset spring, and the PCB is conveyed to the transmission roller by the driving action of the linkage block, and the PCB still needs time to accelerate from rest, therefore, the movable plate cannot be impacted, the cam rotates to the lowest point to contact the stop piece, the stop piece slides to the position below the highest point of the transmission roller under the action of gravity, and the transmission roller transmits the PCB to discharge.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a PCB inspection apparatus according to the present invention.

Fig. 2 is a schematic structural view of the detection device of the PCB panel of the present invention when the cam is at the lowest point.

Fig. 3 is a schematic structural view of the detecting device of the PCB board of the present invention when the cam is at the highest point.

Fig. 4 is a schematic structural view of a cam of the detecting device for PCB panel of the present invention in an intermediate transition position.

Fig. 5 is a structural schematic view of a partial section of the stopper.

Fig. 6 is a side view of the clamping member.

Fig. 7 is a schematic structural view of the other side of the stopper.

In the figure, 1, a driving part, 2, a conveying channel, 3, a feeding hole, 4, a discharging hole, 5, a conveying part, 6, a stopping part, 7, a working surface, 8, a clamping part, 9, a conveying roller, 10, a speed reducing roller, 11, a silica gel layer, 12, a stopping part, 13, a cam, 14, a pre-clamping mechanism, 15, a shrinkage cavity, 16, a transverse cavity, 17, a longitudinal cavity, 18, a movable plate, 19, a pre-clamping plate, 20, a transition column, 21, a transition curved surface, 22, a connecting column, 23, a connecting spring, 24, a through groove, 25, a fixing jaw, 26, a clamping jaw, 27, a sliding rod, 28, a clamping plate, 29, a connecting plate, 30, a poking rod, 31, a linkage block, 32, a reset spring, 33, a square groove, 34, a delay spring, 35 and a photoelectric sensor.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the protection of the present invention.

Referring to fig. 1-4, the invention provides a detection device for a PCB, comprising a driving part 1 and a transportation channel 2, wherein two ends of the transportation channel 2 are respectively a feeding port 3 and a discharging port 4, two sides of the transportation channel 2 are provided with transmission parts 5, the transmission parts 5 are connected by the driving part 1 in a driving manner, the transportation channel 2 is further provided with a stopping part 6, the stopping part 6 is arranged on the side wall of the discharging port 4 and corresponds to the position of the transmission part 5, the stopping part 6 is higher or lower than a working surface 7 of the transmission part 5 contacting with a workpiece, the transportation channel 2 is further provided with a clamping part 8, when the stopping part 6 is higher than the working surface 7 of the transmission part 5 contacting with the workpiece, the clamping part 8 clamps the workpiece, and when the stopping part 6 is lower than the working surface 7 of the transmission part 5 contacting with the workpiece, the clamping part 8 is lower than the working surface 7 in an open state, the conveying part 5 is conveying roller 9, conveying roller 9 is provided with a plurality of, conveying roller 9 is along transport direction equipartition of transfer passage 2, conveying roller 9 is rotated by the drive of drive part 1, still is provided with speed reduction roller 10 in the conveying roller 9, speed reduction roller 10 is provided with 1-2, speed reduction roller 10 is driven by gear motor, the direction of rotation of speed reduction roller 10 is opposite with conveying roller 9's direction of rotation, speed reduction roller 10 interval sets up in the one end that is close to discharge gate 4, and speed reduction roller 10's outer lane is provided with silica gel layer 11.

Referring to fig. 5, the stopping member 6 includes a stopping member 12 and a cam 13, the bottom of the stopping member 12 contacts with the cam 13, the stopping motor drives the cam 13 to drive the stopping member 12 to slide up and down along the side wall of the transportation channel 2, the stopping member 12 is provided with a pre-clamping mechanism 14, the pre-clamping mechanism 14 is arranged in a shrinkage cavity 15, the shrinkage cavity 15 is a cross-shaped cavity, the cross-shaped cavity includes a transverse cavity 16 extending along the transportation direction and a longitudinal cavity 17 extending along the vertical direction, the pre-clamping mechanism 14 includes a movable plate 18 and pre-clamping plates 19 located at two sides of the movable plate 18, the movable plate 18 slides along the transverse cavity 16, the pre-clamping plates 19 approach or depart from each other along the longitudinal cavity 17, one end of the movable plate 18 departing from the transmission member 5 is connected with a transition column 20, the side of the transition column 20 corresponding to the pre-clamping plates 19, transition curved surface 21 is for the rounding off curved surface from low to high along the direction of transportation, transition post 20 one end is connected with the lateral wall of horizontal cavity 16 through replying the spring, the one end that transmission part 5 was kept away from to clamp plate 19 in advance is provided with the spliced pole 22 of vertical direction, the low side and the transition curved surface 21 of spliced pole 22 contact, two connect through the connecting spring 23 of vertical setting between the clamp plate 19 in advance, fly leaf 18 is seted up and is put along transversely being provided with logical groove 24, connecting spring 23 runs through logical groove 24, follows logical groove 24 lateral shifting.

Referring to fig. 1 and 6, the clamping part 8 includes a fixed jaw 25 and a clamping jaw 26, the fixed jaw 25 is fixedly disposed on the side wall of the transportation channel 2, a sliding rod 27 disposed along the vertical direction is disposed on the side wall, the clamping jaw 26 includes a plurality of clamping plates 28, the clamping plates 28 are disposed between the transmission rollers 9, the clamping plates 28 are fixedly connected with a connecting plate 29, the connecting plate 29 is sleeved on the sliding rod 27, a poking rod 30 is disposed below the connecting plate 29, the poking rod 30 is sleeved on the sliding rod 27, the stop part 12 is further provided with a linkage block 31, the linkage block 31 is fixedly connected with the poking rod 30, a reset spring 32 is further sleeved on the sliding rod 27, and the reset spring 32 is disposed between the connecting plate 29 and the fixed jaw 25.

Referring to fig. 7, the stopper 12 is further provided with a square groove 33, the link block 31 is engaged in the square groove 33 and slides along the square groove 33, and a delay spring 34 that extends and contracts in the vertical direction is disposed between the link block 31 and the square groove 33.

With reference to fig. 1, a photoelectric sensor 35 is arranged between the reduction roller 10 and the preceding transport roller 9 in the transport direction.

The working principle is as follows: by adopting a linkage mode, the stopping component 6 controls the up-and-down movement through the cam 13, so that the stopping component 12 is higher than the highest point of the transmission roller 9 to stop the PCB, or is lower than the highest point of the transmission roller 9 to not hinder the transportation and passing of the PCB, the pre-clamping mechanism 14 on the stopping component 6 can perform buffering, speed reducing and pre-clamping functions on the PCB, when the transition position between the highest point and the lowest point of the cam 13 is contacted with the bottom of the stopping component 12, the movable plate 18 and the PCB are positioned on the same plane, the PCB pushes the movable plate 18 into the transverse cavity 16 due to the transmission function of the transmission roller 9, the return spring is compressed, the bottoms of the connecting posts 22 on the pre-clamping plate 19 move along the transition curved surface 21, the two connecting posts 22 are contacted with the low curved surface, the two connecting posts 22 are mutually closed, the driving amount pre-clamping plates 19 are mutually closed, the stop member 12 is pushed to the highest point, the deceleration roller 10 stops rotating, the PCB loses the transmission acting force of the transmission member 5, the return spring in the transverse cavity 16 rebounds to a free state, the movable plate 18 moves along the reverse direction of the transportation direction, the connecting columns 22 are propped away from each other by the curved surface at the high point, the pre-clamping plates 19 are separated from each other and loosened, the PCB is separated from the stop member 6, at this time, the linkage block 31 on the stop member 12 drives the poke rod 30 to move upwards to drive the clamping jaws 26 to move upwards to be close to and clamp the PCB, when the cam 13 rotates to the transition position, the clamping jaws 26 are subjected to the resetting action of the return spring 32 to be far away from the fixed jaws 25, and the PCB is conveyed downwards due to the driving action of the linkage block 31 to be conveyed to the transmission roller 9, at this time, the PCB is accelerated by the rest for a further time, so that the, the stop piece 12 slides to the position below the highest point of the transmission roller 9 under the action of gravity, and the transmission roller 9 transmits the PCB to discharge.

The above description describes the PCB inspection apparatus provided in the present invention in detail. The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.