CN220532282U

CN220532282U - Golden finger surface defect detection equipment

Info

Publication number: CN220532282U
Application number: CN202321973453.3U
Authority: CN
Inventors: 徐晨; 孙晋祥; 刘哲
Original assignee: Shengtong Technology Guangzhou Co ltd
Current assignee: Shengtong Technology Guangzhou Co ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2024-02-27
Anticipated expiration: 2033-07-25

Abstract

The utility model relates to a golden finger surface defect detection device, which comprises: the PCB overturning mechanism is connected with the feeding mechanism, the front detection mechanism, the PCB overturning mechanism, the back detection mechanism and the discharging mechanism in sequence; a to-be-detected workpiece PCB enters a detection channel from one end of a feeding mechanism, goes through a front detection mechanism, a PCB overturning mechanism and a back detection mechanism, is divided into OK materials and NG materials according to detection results, is subjected to blanking and sorting by a blanking mechanism, and is arranged in different material boxes according to detection results; the PCB turnover mechanism is positioned between the front detection mechanism and the back detection mechanism so as to turn over the workpiece; a transition grabbing table is arranged between the two mutually matched blanking mechanisms. The golden finger surface defect detection equipment solves the problem of PCB double-sheet combined storage, and improves the volume rate of PCB storage.

Description

Golden finger surface defect detection equipment

Technical Field

The utility model relates to a PCB detection technology, in particular to golden finger surface defect detection equipment.

Background

The technical equipment for detecting the surface defects of the golden finger is used for detecting the defects of the golden finger area of the PCB hardware plate, wherein the defects comprise scratches, tin dipping, connecting bridges, stripping, short circuit, disconnection, foreign matters, dyeing and the like, and the defects are various and not obvious.

The existing golden finger detection equipment is often used for feeding and discharging independently, and the efficiency is low.

Disclosure of Invention

The utility model aims to provide golden finger surface defect detection equipment which is used for solving the problems in the prior art.

The utility model discloses a golden finger surface defect detection device, which comprises: at least one detection system, each detection system comprising a pair of matched detection channels, each detection channel comprising: the PCB overturning mechanism is connected with the feeding mechanism, the front detection mechanism, the PCB overturning mechanism, the back detection mechanism and the discharging mechanism in sequence; a to-be-detected workpiece PCB enters a detection channel from one end of a feeding mechanism, sequentially passes through a front detection mechanism, a PCB overturning mechanism and a back detection mechanism, is divided into OK materials and NG materials according to detection results, is subjected to blanking and sorting by a blanking mechanism, and is arranged in different material boxes according to detection results; the PCB overturning mechanism is positioned between the front detection mechanism and the back detection mechanism so as to overturn the PCB, and the PCB is placed to the back detection mechanism from the front detection mechanism; the two blanking mechanisms of the matched detection channel are correspondingly provided with transition grabbing tables; the transition grabbing platform comprises: the device comprises a bench, a transition grabbing bench motor, a rotating shaft, a left hinge, a right hinge, a left transmission gear train and a right transmission gear train; the transition grabbing bench motor is arranged at one end of the rack and drives the left hinge and the right hinge to turn over; the rotating shaft is connected with the transition grabbing table motor and is driven to rotate by the transition grabbing table motor; two ends of the rotating shaft are respectively connected with a left transmission gear train and a right transmission gear train, and a gear on the left transmission gear train drives a transmission belt of the left transmission gear train to rotate so as to drive another gear connected with the left hinge to rotate so as to drive the left hinge to rotate; one gear on the right driving wheel system drives the driving belt of the right driving wheel system to rotate so as to drive the other gear connected with the right hinge to rotate, so that the right hinge is driven to rotate.

According to one embodiment of the golden finger surface defect detection equipment, the PCB overturning mechanism comprises a front detection conveyor belt assembly, a PCB grabbing assembly, an overturning assembly and a back detection conveyor belt assembly; the front detection conveyor belt assembly comprises a first conveyor belt substrate, a front detection conveyor belt, a first wire rail and a first PCB placing plate; the first conveyor belt base plate is connected with the first line rail, the first line rail is used as a guide, the first PCB placing plate is arranged on the sliding block of the first line rail in a threaded mode, the first PCB placing plate can slide along the first line rail, and the front detection conveyor belt drives the first PCB placing plate to convey the first PCB placing plate; the PCB grabbing component is provided with a grabbing sucker and is positioned above the front detection conveyor belt so as to suck and place the PCB through the grabbing sucker; the turnover assembly comprises a turnover sucker and a turnover shaft, the turnover assembly is moved to the turnover sucker after the grabbing sucker grabs the PCB, the turnover sucker sucks the PCB, and the turnover shaft drives the turnover sucker to rotate so as to turn over the PCB and then convey the PCB to the reverse side detection conveyor belt assembly; the back detection conveyor belt assembly comprises a second conveyor belt substrate, a back detection conveyor belt, a second wire rail and a second PCB placing plate; the second conveyor belt substrate is arranged on the machine table surface; the second conveyer belt base plate is connected the second line rail, and the board setting is placed to the second PCB on the slider of second line rail, and the second line rail is as the direction, and the board can slide along the second line rail to the second PCB is placed to the second to detect the conveyer belt by the reverse side and is conveyed.

According to one embodiment of the golden finger surface defect detection equipment, the PCB grabbing assembly comprises two grabbing suckers, the two grabbing suckers are arranged on a sucker mounting plate at intervals, the sucker mounting plate is arranged at the tail end of a stroke cylinder, and the grabbing suckers are driven to longitudinally move through a telescopic rod of the stroke cylinder; the stroke cylinder is arranged on the rodless cylinder, the rodless cylinder drives the stroke cylinder to transversely move, the grabbing sucker falls above the first PCB placing plate when the sliding block of the rodless cylinder moves to one transverse end, and the grabbing sucker falls above the overturning sucker when the sliding block of the rodless cylinder moves to the other end; the rodless cylinder is arranged on the grabbing module backboard, and the grabbing module backboard is arranged on a rack of the equipment.

According to one embodiment of the golden finger surface defect detection equipment, the turnover assembly is fastened on the machine table surface through the turnover structure mounting plate in a threaded mode, the turnover shaft is arranged on the turnover structure mounting plate through bearings at two ends, one end of the turnover shaft is directly connected with the motor through a coupler, the turnover shaft is connected with the turnover plate, and the turnover sucker is connected with the turnover plate.

According to the embodiment of the golden finger surface defect detection equipment, the blanking mechanism comprises the NG material clamping claw structure, the NG material clamping claw structure comprises a vertical direction module and a horizontal direction module, the vertical direction module and the horizontal direction module are guided by a linear guide rail as a sliding table so as to drive the NG material clamping claw to vertically and horizontally move to grab two PCB boards placed back to back on a transition grabbing table and send the two PCB boards to the NG material box.

According to the embodiment of the golden finger surface defect detection equipment, the blanking mechanism comprises the OK material clamping claw structure, the OK material clamping claw structure comprises a vertical direction module and a horizontal direction module, the vertical direction module and the horizontal direction module are both guided by the linear guide rail as a sliding table so as to drive the OK material clamping claw to vertically and horizontally move to grab two PCB boards placed back to back on the transitional grabbing table and send the two PCB boards to the OK material box.

According to one embodiment of the golden finger surface defect detection equipment, the grabbing clamping jaw replaces the grabbing sucker, and the overturning clamping jaw replaces the overturning sucker.

According to the embodiment of the golden finger surface defect detection equipment, the PCB turnover mechanism is provided with the travel switch, when the front detection mechanism conveys the PCB to the position parallel to the clamping jaw of the PCB turnover mechanism, the PCB placing flat plate on the conveying belt of the back detection mechanism moves to the position parallel to the clamping jaw of the PCB turnover mechanism, and after the travel switch triggers a signal to the control center, the action of the PCB turnover mechanism starts to be started.

According to an embodiment of the golden finger surface defect detection apparatus of the present utility model, the front detection mechanism includes: the first camera lens, the first light source and the first code scanner are used for carrying out front scanning detection and information recording on the PCB; the reverse side detection mechanism includes: the second camera lens, the second light source and the second code scanner are used for carrying out reverse scanning detection and information recording on the PCB.

According to the embodiment of the golden finger surface defect detection equipment, the feeding mechanism comprises the feeding channel, the structure of the feeding channel is that a linear guide rail is used as a guide, a flat plate is connected to a sliding block of the guide rail, a PCB board is placed on the flat plate, and the flat plate is connected with the synchronous belt so that the feeding motor drives the synchronous belt to convey the PCB board.

The golden finger surface defect detection equipment solves the problem of PCB double-sheet combined storage, and improves the volume rate of PCB storage.

Drawings

FIG. 1 is an overall structure diagram of a golden finger surface defect detection technology device;

FIG. 2 is a schematic diagram of a front detection mechanism;

FIG. 3 is a schematic diagram of two detection systems;

FIG. 4 is a schematic diagram of a PCB flipping mechanism;

FIG. 5 is a schematic view of a transition gripping station;

fig. 6 is a schematic diagram of a blanking structure.

Detailed Description

For the purposes of clarity, content, and advantages of the present utility model, a detailed description of the embodiments of the present utility model will be described in detail below with reference to the drawings and examples.

Fig. 1 is an overall structure diagram of a golden finger surface defect detection technical device, as shown in fig. 1, and the golden finger surface defect detection technical device is used for automatic defect detection of a PCB hard board golden finger. The golden finger surface defect detection technical equipment comprises at least one detection system, such as a detection system 1 and a detection system 2, wherein the two detection systems are similar in structure and run in parallel, and can share a blanking sorting mechanism so as to improve the detection effect. In practice, the number of detection systems can be flexibly determined. Wherein, every detecting system all includes two detection channels, and two detection channels mutually match, with two PCB board back unloading when the unloading to promote detection efficiency. Specifically, the detection system comprises: the PCB feeding device comprises a feeding mechanism 3, a front detection mechanism 4, a PCB overturning mechanism 5, a back detection mechanism 6 and a discharging mechanism 7.

Fig. 2 is a schematic diagram of a front detection mechanism, fig. 3 is a schematic diagram of two detection systems, and as shown in fig. 1 to 3, the feeding mechanism 3 in this embodiment includes two matched detection channels, and in fig. 1, four detection channels are provided, and the corresponding mechanism has four parts. The linear guide rail of each detection channel is used as a guide, the rectangular flat plate is fastened on the sliding block of the guide rail by threads, the PCB is placed on the flat plate, the flat plate and the synchronous belt are fastened by threads, and the motor drives the synchronous belt to convey the PCB.

As shown in fig. 1 to 3, a workpiece to be inspected, namely a PCB board, enters the device from one end of the feeding mechanism 3, and goes through the front detection mechanism 4, the PCB turnover mechanism 5 and the back detection mechanism 6 to complete all detection, and is divided into an OK material (passing) and an NG material (not passing) according to the detection result. And waiting for the blanking mechanism 7 to perform blanking sorting in a blanking area, and then arranging the sorting areas in different material boxes according to detection results.

As shown in fig. 1 to 3, the feeding mechanism 1 adopts a belt conveying mode, and places a strip-shaped PCB above a belt for conveying. The golden finger detection of the PCB is mainly completed through the front detection mechanism 4 and the back detection mechanism 6.

As shown in fig. 1 to 3, the detection modes adopted by the front detection mechanism 4 and the back detection mechanism 6 are all linear array cameras, and the workpiece is moved by the conveyor belt, so that the scanning of the whole PCB board is realized, and further, the image processing is performed, and the surface defects of the PCB board are identified. The front detection mechanism 4 and the back detection mechanism 6 mainly comprise a camera lens 101, a light source 102 and a code scanner 104, and can finish scanning detection and information recording of the PCB 103. The light source 102 is matched with the camera lens 101 for supplementing light to the camera lens 101, and the camera lens 101, the light source 102 and the code scanner 104 are all arranged on the detection rack.

Fig. 4 is a schematic view of a PCB turnover mechanism, and as shown in fig. 4, a PCB turnover mechanism 5 is located between the front detection mechanism 4 and the back detection mechanism 6, and the PCB turnover mechanism 5 achieves 180-degree turnover of the workpiece.

As shown in fig. 4, the PCB flipping mechanism 5 includes a front side inspection conveyor assembly, a PCB grabbing assembly, a flipping assembly, and a back side inspection conveyor assembly. The front side inspection conveyor assembly includes a first conveyor substrate 509, a front side inspection conveyor 510, a first track 508, and a first PCB placement board 507. The first conveyor belt base plate 509 is arranged on a machine table surface by threads, the first wire rail 508 is locked by threads on the upper end surface to serve as a guide, the first PCB placing plate 507 is arranged on a sliding block of the first wire rail 508 by threads, the PCB placing plate can slide along the first wire rail 508, and the front detection conveyor belt 510 is driven by a motor to carry out conveying. The PCB grabbing component comprises two grabbing suckers 505, and the two grabbing suckers 505 are arranged on a sucker mounting plate 504 at intervals to grab the PCB at two points; the sucker mounting plate 504 is screwed at the tail end of the stroke cylinder 503, and the grabbing sucker 505 can move up and down through the expansion and contraction of the stroke cylinder 503, so that the PCB can be grabbed. The stroke cylinder 503 is installed on the rodless cylinder 502, and the rodless cylinder 502 can drive the stroke cylinder 503 to move left and right, when the sliding block of the rodless cylinder 502 moves to the right end, the grabbing sucker 505 falls over the first PCB placing plate 507, and when the sliding block of the rodless cylinder 502 moves to the left end, the grabbing sucker 505 falls over the overturning sucker 514. The rodless cylinder 502 is mounted on the grabbing module back plate 501 in a threaded manner, the grabbing module back plate 501 is locked on the machine frame of the equipment through two mounting plates 520 on the back, and the PCB grabbing assembly is located above the front detection conveyor belt 510. The turnover assembly is fastened on the machine platform through the turnover structure mounting plate 511 by threads, the turnover shaft 515 is arranged on the turnover structure mounting plate 511 through bearings at two ends, one end of the turnover shaft 515 is directly connected with the motor through a coupler, two platform surfaces are arranged on the turnover shaft 515 and used for fastening the turnover plate 519, the turnover sucker 514 is fastened on the set metal plate 518 through threads, and the metal plate 518 is fastened on the bottom surface of the turnover plate 519. When waiting to snatch the PCB board, snatch sucking disc 505 sucking disc mouth up, by snatch sucking disc 505 with the PCB board after snatching, remove to upset sucking disc 514 top, start upset sucking disc 514 and hold the PCB board, release simultaneously and snatch sucking disc 505, just shift the PCB board to the upset subassembly by openly detecting the conveyer belt 510. After the turnover sucker 514 sucks the PCB, the turnover motor is started, the turnover shaft 515 drives the turnover plate 519 to rotate 180 degrees, the PCB is located above the second PCB placing plate 521, and after the turnover sucker 514 is loosened, the PCB falls on the second PCB placing plate 521. Thereby effecting transfer of the PCB from the flip assembly to the reverse side inspection conveyor 516. The back detection conveyor belt assembly comprises a second conveyor belt substrate 513, a back detection conveyor belt 516, a second wire rail 517 and a second PCB placing plate 521, the structure of the back detection conveyor belt assembly is similar to that of the front detection conveyor belt assembly, the second conveyor belt substrate 513 is arranged on a machine table surface by threads, the second wire rail 517 is locked by upper end surface threads to serve as a guide, the second PCB placing plate 521 is arranged on a sliding block of the second wire rail 517 by threads, the PCB placing plate can slide along the second wire rail 517, and the back detection conveyor belt 516 is driven by a motor to carry out conveying.

For another embodiment, the suction cup may also take the form of a clamping jaw, that is, the PCB board is turned by clamping instead of sucking, and when the conveyor belt of the front detection mechanism 4 conveys the PCB board to a position parallel to the clamping jaw of the PCB turning mechanism 5, as shown in fig. 4, the PCB placing plate on the conveyor belt of the back detection mechanism 6 also moves to a position parallel to the clamping jaw of the PCB turning mechanism 5. At this time, a signal is sent to the control center through the travel switch, and the action of the PCB turnover mechanism 5 starts to be started. Firstly, the clamping jaw of the turnover shaft 515 moves up and down through the stroke cylinder 503, so that a PCB on the front detection conveyor belt 510 can be grabbed, the stroke cylinder 503 is recovered and lifted after grabbing, the clamping jaw of the turnover shaft 515 is moved to the position above the clamping jaw of the turnover shaft 515 through a guide rail, the PCB is placed on the clamping jaw of the turnover shaft 515 to be clamped, the turnover shaft 515 is started to drive the PCB to turn 180 degrees, the PCB is positioned above a flat plate of the back detection conveyor belt, and the clamping jaw of the turnover shaft 515 is loosened to place the PCB on the back detection conveyor belt 516.

Fig. 5 is a schematic view of a transition gripping station, and as shown in fig. 5, the transition gripping station 60 includes: the rack, the motor 75, the rotating shaft 77, the left hinge 72, the right hinge 76, the left transmission gear train 71 and the right transmission gear train 74. The motor 75 is arranged at one end of the rack, the rotating shaft 77 is connected with the motor 75, and the motor 75 drives the motor to rotate. The two ends of the rotating shaft 77 are respectively connected with the left transmission gear train 71 and the right transmission gear train 74, and the gear connected with the left hinge 72 is driven to rotate by a gear driving transmission belt on the left transmission gear train 71 so as to drive the left hinge 72. The gears on the right drive train 74 drive the belt to rotate the gears connected to the right hinge 76 to rotate the right hinge 76.

As shown in fig. 5, the transition grabbing stand 60 is configured to rotate two hinges 72 and 76 so that the PCB 73 laid on the hinges can be placed vertically, and the two PCBs 73 are placed back to back. The rotation of the hinges 72 and 76 is controlled by the same motor 75, wherein a rotation shaft 77 directly connected with the motor 75 drives the left hinge 72 to rotate through the gear of the left transmission gear train 71 and the synchronous belt transmission, and the output end of the motor 75 drives the right hinge 76 to rotate through the right transmission gear train 74, so that the synchronous vertical placement of two PCBs is realized.

Fig. 6 is a schematic diagram of a blanking structure, as shown in fig. 6, a clamping jaw structure of NG material includes two linear modules, namely a vertical direction module and a horizontal direction module, wherein the two modules are both linear guide rails serving as a sliding table for guiding, a synchronous pulley is driven by a motor to drive a tail end to move, the tail end of the clamping jaw is a strip-shaped plate, 4 starting clamping jaws are arranged on the plate in a threaded manner, and two PCB boards which are vertically placed back to back on a transition grabbing table 60 can be grabbed at one time. Firstly, according to the detection result, the PCB is judged to be NG material, a vertical movement module of a NG material clamping claw 12 is started, the clamping claw descends to a grabbing position, the clamping claw grabs the PCB board, then the vertical direction module ascends, the horizontal direction module starts, the PCB board is sent to the upper end of a NG material box 11, the pneumatic clamping claw is released, and the NG material enters the material box.

As shown in fig. 6, the OK feed jaw 10 is constructed to include two orthogonal linear modules, a stroke cylinder, a pneumatic rotary structure, and a terminal pneumatic jaw. The linear module is guided by a linear guide rail serving as a sliding table, the tail end of the linear guide rail is driven by a motor to move by a synchronous pulley, the tail end of each clamping jaw is a strip-shaped plate, 4 starting clamping jaws are arranged on the plate in a threaded manner, and two PCB boards which are vertically placed back to back on the transition grabbing table 60 can be grabbed at one time. The pneumatic clamping jaw of end sets up on pneumatic rotating structure, and rotating structure fastens at the stroke cylinder end, and the stroke cylinder fastens on the removal slider of sharp module. Through the movement of two orthogonal straight line modules, the start clamping jaw is moved to the transition and snatch platform 60 top, the travel cylinder starts, the pneumatic clamping jaw descends and snatchs the PCB, then the travel cylinder is retracted, the PCB rises, the rotating structure starts, the direction of the PCB rotates 90 degrees, simultaneously moves to the PCB workbin top through two orthogonal straight line modules, starts the travel cylinder, inserts the PCB into the draw-in groove of PCB workbin, and the unloading of OK material is placed once. And grabbing and placing are sequentially carried out, so that automatic blanking storage is realized.

As shown in fig. 1 to 6, the blanking of the PCB board includes OK material and NG material, which is structurally realized by a double-layer structure, the NG material tray is placed on the upper layer, and the grabbing mechanism is realized by a linear module in the vertical direction, which can be placed on the NG material tray from the rising of the NG material after grabbing. At first four transfer channels of unloading region are by linear guide as the direction, and every guide rail screw thread fastening is on the aluminum plate of bar, and the slider on the guide rail is by a PCB of screw thread fastening places the dull and stereotyped, and the transfer of PCB is realized by the motor drive through dull and stereotyped and hold-in range locking mode. When the PCB is conveyed to the blanking area, a travel switch is triggered, the control console can start the blanking clamping jaw 13 to grab the PCB, and the PCB is grabbed onto the transition grabbing platform 60 from the conveying channel. The blanking clamping jaw 13 is horizontally fastened on the frame through a linear module, an L-shaped plate is fastened on an output sliding block of the linear module through threads, a group of pneumatic sucking discs are respectively arranged on two sides of the L-shaped plate to suck the PCB due to the travel limit of the linear module, and the right-most conveying channel is grabbed by the right-side sucking disc, so that the grabbing range of the blanking clamping jaw 13 can be ensured to cover four conveying channels.

As shown in fig. 6, in the process of blanking and storing the PCB hard board, the stacked empty boxes are placed in the second storage box, and the box cover and the box are stacked together at intervals. The first storage box is internally provided with no material box, when the equipment starts, the sucker clamp clamps one material box to move from the second storage box to the first storage box, the lifting structure in the first storage box is at the highest position, the position of the first empty material box is ensured to be horizontal with the machine bench, the position is used for docking with the blanking structure of the automatic detection equipment, and the blanking clamp places the PCB hard board in the empty material box until the first box is filled. Then the material box plate in the second storage box is clamped by the sucker clamp and moved to the upper part of the first storage box for packaging the first full material box, the lifting structure in the first storage box descends by one material box height position after the completion, and the lifting structure in the second storage box ascends by one height position. The sucker clamp clamps the second empty bin into the first storage bin, and so on until loading of all empty bins is completed. And taking out the full material box in the first storage box manually after the completion, and then putting the new empty material box into the second storage box. Thereby, the stacking storage of the PCB can be repeatedly performed.

The utility model relates to a golden finger surface defect detection technical device, which adopts optics to detect the surface defect of a PCB hard board golden finger area and comprises a double-panel and a single-panel. The automatic detection of the golden finger area of the PCB can be completed, and the golden finger area comprises a front surface and a back surface. The equipment can realize automatic feeding and discharging, and OK material and NG material are classified according to the detection result, and the information of materials can be recorded.

To the golden finger detection of longer (more than 500 mm), the structure of stable upset, through solitary flip structure, can solve the stable transform of gesture of upset in-process PCB, adopt two-point sucking disc mode can guarantee the non-destructive to PCB board surface of upset process. The blanking structural design has the advantages that the transition grabbing platform is designed, the problem of PCB double-piece combined storage is solved, and the volume rate of PCB storage is improved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. A golden finger surface defect detection apparatus, comprising: at least one detection system, each detection system comprising a pair of matched detection channels, each detection channel comprising: the PCB overturning mechanism is connected with the feeding mechanism, the front detection mechanism, the PCB overturning mechanism, the back detection mechanism and the discharging mechanism in sequence;

a to-be-detected workpiece PCB enters a detection channel from one end of a feeding mechanism, sequentially passes through a front detection mechanism, a PCB overturning mechanism and a back detection mechanism, is divided into OK materials and NG materials according to detection results, is subjected to blanking and sorting by a blanking mechanism, and is arranged in different material boxes according to detection results;

the PCB overturning mechanism is positioned between the front detection mechanism and the back detection mechanism so as to overturn the PCB, and the PCB is placed to the back detection mechanism from the front detection mechanism;

the two blanking mechanisms of the matched detection channel correspond to the transition grabbing tables;

the transition grabbing platform comprises: the device comprises a bench, a transition grabbing bench motor, a rotating shaft, a left hinge, a right hinge, a left transmission gear train and a right transmission gear train; the transition grabbing bench motor is arranged at one end of the rack and drives the left hinge and the right hinge to turn over; the rotating shaft is connected with the transition grabbing table motor and is driven to rotate by the transition grabbing table motor; two ends of the rotating shaft are respectively connected with a left transmission gear train and a right transmission gear train, and a gear on the left transmission gear train drives a transmission belt of the left transmission gear train to rotate so as to drive another gear connected with the left hinge to rotate so as to drive the left hinge to rotate; one gear on the right driving wheel system drives the driving belt of the right driving wheel system to rotate so as to drive the other gear connected with the right hinge to rotate, so that the right hinge is driven to rotate.

2. The golden finger surface defect detection apparatus of claim 1 wherein the PCB flipping mechanism comprises a front side detection conveyor assembly, a PCB grabbing assembly, a flipping assembly, and a back side detection conveyor assembly;

the front detection conveyor belt assembly comprises a first conveyor belt substrate, a front detection conveyor belt, a first wire rail and a first PCB placing plate; the first conveyor belt base plate is connected with the first line rail, the first line rail is used as a guide, the first PCB placing plate is arranged on the sliding block of the first line rail in a threaded mode, the first PCB placing plate can slide along the first line rail, and the front detection conveyor belt drives the first PCB placing plate to convey the first PCB placing plate;

the PCB grabbing component is provided with a grabbing sucker and is positioned above the front detection conveyor belt so as to suck and place the PCB through the grabbing sucker;

the turnover assembly comprises a turnover sucker and a turnover shaft, the turnover assembly is moved to the turnover sucker after the grabbing sucker grabs the PCB, the turnover sucker sucks the PCB, and the turnover shaft drives the turnover sucker to rotate so as to turn over the PCB and then convey the PCB to the reverse side detection conveyor belt assembly;

the back detection conveyor belt assembly comprises a second conveyor belt substrate, a back detection conveyor belt, a second wire rail and a second PCB placing plate; the second conveyor belt substrate is arranged on the machine table surface; the second conveyer belt base plate is connected the second line rail, and the board setting is placed to the second PCB on the slider of second line rail, and the second line rail is as the direction, and the board can slide along the second line rail to the second PCB is placed to the second to detect the conveyer belt by the reverse side and is conveyed.

3. The golden finger surface defect detection equipment according to claim 2, wherein the PCB grabbing component comprises two grabbing suckers, the two grabbing suckers are arranged on a sucker mounting plate at intervals, the sucker mounting plate is arranged at the tail end of a stroke cylinder, and the grabbing suckers are driven to longitudinally move by a telescopic rod of the stroke cylinder;

the stroke cylinder is arranged on the rodless cylinder, the rodless cylinder drives the stroke cylinder to transversely move, the grabbing sucker falls above the first PCB placing plate when the sliding block of the rodless cylinder moves to one transverse end, and the grabbing sucker falls above the overturning sucker when the sliding block of the rodless cylinder moves to the other end;

the rodless cylinder is arranged on the grabbing module backboard, and the grabbing module backboard is arranged on a rack of the equipment.

4. The golden finger surface defect detection device according to claim 2, wherein the turnover assembly is fastened on the machine table surface through a turnover structure mounting plate in a threaded manner, the turnover shaft is arranged on the turnover structure mounting plate through bearings at two ends, one end of the turnover shaft is directly connected with the motor through a coupling, the turnover shaft is connected with the turnover plate, and the turnover sucker is connected with the turnover plate.

5. The golden finger surface defect detection apparatus of claim 1 wherein the blanking mechanism comprises a NG material gripper structure comprising a vertical direction module and a horizontal direction module, both of which are guided by a linear guide as a sliding table to drive the NG material gripper to move vertically and horizontally to grip two PCB boards placed back to back on the transition gripping table and to feed to the NG bin.

6. The golden finger surface defect detection device of claim 1, wherein the blanking mechanism comprises an OK material clamping claw structure, the OK material clamping claw structure comprises a vertical direction module and a horizontal direction module, the vertical direction module and the horizontal direction module are guided by linear guide rails as sliding tables so as to drive the OK material clamping claw to vertically and horizontally move so as to grab two PCB boards placed back to back on the transition grabbing table and send the two PCB boards to the OK material box.

7. The golden finger surface defect detection apparatus according to claim 3 or 4, wherein the flip grip replaces the flip chuck by a grip.

8. The golden finger surface defect detection equipment according to claim 1, wherein the PCB overturning mechanism is provided with a travel switch, and when the front detection mechanism conveys the PCB to a position parallel to the clamping jaw of the PCB overturning mechanism, after the PCB placing flat plate on the conveying belt of the back detection mechanism moves to a position parallel to the clamping jaw of the PCB overturning mechanism, the travel switch triggers a signal to the control center to start the action of the PCB overturning mechanism.

9. The golden finger surface defect detection apparatus of claim 1, wherein the front surface detection mechanism comprises: the first camera lens, the first light source and the first code scanner are used for carrying out front scanning detection and information recording on the PCB;

the reverse side detection mechanism includes: the second camera lens, the second light source and the second code scanner are used for carrying out reverse scanning detection and information recording on the PCB.

10. The golden finger surface defect detection equipment according to claim 1, wherein the feeding mechanism comprises a feeding channel, the structure of the feeding channel is that a linear guide rail is used as a guide, a flat plate is connected to a sliding block of the guide rail, a PCB board is placed on the flat plate, and the flat plate is connected with the synchronous belt so that the synchronous belt is driven by a feeding motor to convey the PCB board.