CN218230765U

CN218230765U - Parallel detection mechanism of PCB board

Info

Publication number: CN218230765U
Application number: CN202221537904.4U
Authority: CN
Inventors: 帅欣然; 黄建
Original assignee: Shenzhen Goodfellas Intelligent Technology Co ltd
Current assignee: Shenzhen Goodfellas Intelligent Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2023-01-06
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a parallel detection mechanism of PCB board, include: two PCB board detection mechanisms; the front conveying mechanism of the PCB detection mechanism drives the first jig to do reciprocating linear motion through a camera lens of the first visual detection mechanism; a first visual inspection mechanism having a line scan camera; the acquisition mechanism before turning corresponds to the first jig, can clamp and take the PCB on the first jig, and is placed on the turning mechanism; and the turnover mechanism is used for turning over the PCB, and placing the turned PCB on a second jig of the reverse side detection conveying mechanism, the reverse side detection conveying mechanism drives the second jig to do linear motion under a camera of the second visual detection mechanism, and the line scanning camera of the second visual detection mechanism scans the reverse side of the PCB. The utility model discloses a parallel detection mechanism of PCB board detection efficiency is high, can accomplish the PCB board of extensive a large amount and detect by the high efficiency.

Description

Parallel detection mechanism of PCB board

Technical Field

The utility model relates to a PCB detects the technique, in particular to parallel detection mechanism of PCB board.

Background

In the production process of the PCB, various indexes of the PCB need to be detected. The common detection method for detecting the appearance of the PCB comprises the steps of oxidation, scratching, notching, copper exposure or nickel exposure detection and the like.

Chinese patent CN210570477U discloses a PCB golden finger outward appearance detection mechanism, detects golden finger outward appearance height through the square probe of array arrangement to square probe can prevent to cause badness such as pinhole, fish tail to golden finger surface in the testing process. However, the technical scheme has low automation degree, a large amount of manual assistance is needed in the detection process, and the detection efficiency is low.

Chinese patent CN106483145B discloses an automatic detection device for a PCB, which comprises a PCB conveying mechanism, a PCB image acquisition structure, and a PCB detection mechanism, wherein the PCB conveying mechanism is used for conveying a PCB from a placement position to a detection position, and conveying the detected PCB from the detection position to the placement position; the PCB image acquisition structure is used for carrying out color image acquisition operation on the PCB at the detection position; a component color type detection unit in the PCB detection mechanism is used for detecting the type of the component of the PCB according to the obtained color image of the PCB; the component color gray detection unit is used for detecting the height of the components of the PCB according to the acquired color image of the PCB; the component color uniformity detection unit is used for detecting the integrity of the components of the PCB according to the acquired color image of the PCB. This patent passes through the setting that PCB board image acquireed the structure, has improved the degree of discernment of the PCB board color image of acquireing. However, the automatic detection device needs manual work for assisting in loading and unloading, is low in detection efficiency, and is not beneficial to large-scale and large-quantity PCB detection.

Chinese patent CN212872761U discloses a PCB detection apparatus, and with this detection apparatus, the PCB can be automatically transported to the PCB detection apparatus in the detection area. But this patent only provides the function of automatic transport, and it is supplementary still to need the manual work to go up the unloading, and degree of automation is low, and detection efficiency is low, is unfavorable for the PCB of large-scale quantity to detect.

With the improvement of the requirements of the industrial manufacturing on the automation degree and the efficiency of the PCB detection, a device capable of efficiently completing the PCB detection is urgently needed at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a parallel detection mechanism of PCB board for solve above-mentioned prior art's problem.

The utility model relates to a parallel detection mechanism of PCB board, wherein, include: two PCB board detection mechanisms working independently or cooperatively; any PCB detection mechanism comprises a front detection conveying mechanism, a first visual detection light source and a first visual detection mechanism; this openly detect conveying mechanism includes: the belt conveyor comprises a first strip-shaped bracket, a first driving belt pulley, a first driven belt pulley, a first belt clamping plate, a first synchronous belt and a first jig; the first synchronous belt is sleeved on the first driving belt pulley and the first driven belt pulley, so that the first synchronous belt can circularly rotate around the first driving belt pulley and the first driven belt pulley; the first jig is arranged at the upper end of the bar-shaped bracket in a sliding manner and can slide along the upper end of the first bar-shaped bracket; the first belt clamping plate is respectively connected with the first jig and the first synchronous belt, so that the first synchronous belt can drive the first jig to slide along the first strip-shaped support through the first belt clamping plate; the first visual detection light source corresponds to the first visual detection mechanism and is used for providing a light source for the first visual detection mechanism; the first visual detection mechanism faces the motion path of the first jig so as to shoot the PCB on the first jig.

According to the utility model discloses a parallel detection mechanism's of PCB board embodiment, wherein, this PCB board detection mechanism still includes: the reverse side detection conveying mechanism, the second visual detection light source and the second visual detection mechanism; the reverse side detects conveying mechanism should include: the second jig, the second driving belt pulley, the second driven belt pulley, the second belt clamping plate, the second strip-shaped bracket and the second synchronous belt; the second driving belt pulley and the second driven belt pulley are arranged at two ends of the second strip-shaped support, the second synchronous belt is sleeved on the second driving belt pulley and the second driven belt pulley, and the second synchronous belt can circularly rotate around the second driving belt pulley and the second driven belt pulley; the second jig is arranged at the upper end of the bar-shaped support in a sliding manner and can slide along the upper end of the second bar-shaped support; the second belt clamping plate is respectively fixed at the lower end of the second jig and the upper side of the second synchronous belt, so that the second synchronous belt can drive the second jig to slide along the second strip-shaped bracket through the second belt clamping plate; the second visual detection light source is arranged on a rack of the PCB parallel detection mechanism, corresponds to the second visual detection mechanism and is used for providing light source for the second visual detection mechanism; the second visual detection mechanism faces the motion path of the second jig so as to shoot the other surface of the PCB on the second jig.

According to an embodiment of the parallel PCB detecting mechanism of the present invention, the pre-turnover acquiring mechanism is disposed at the moving end of the first jig, and is used for clamping and releasing the PCB from the first jig; the acquisition mechanism is corresponding to the unloading position of first tool before this upset, gets after the PCB board from this unloading clamp, places at this tilting mechanism, and this PCB board can stabilize and overturn to this tilting mechanism, and the PCB board after will overturning is put on this second tool.

According to the utility model discloses a parallel detection mechanism's of PCB board embodiment, wherein, still include: the feeding mechanism and the blanking mechanism are sequentially arranged on a rack of the PCB parallel detection mechanism and are positioned at two ends of the PCB detection mechanism; the feeding mechanism is used for placing the PCB on a first jig of any one PCB detection mechanism from the feeding carrying disc; the blanking mechanism is used for placing the scanned PCB into the blanking carrying disc from the second jig.

According to the utility model discloses a parallel detection mechanism's of PCB board embodiment, wherein, this openly detect conveying mechanism still includes: the first servo motor is arranged at one end of the first strip-shaped support and is connected with the rotating shaft of the first driving belt pulley, and the first servo motor can drive the first driving belt pulley to rotate and is used for driving the first synchronous belt.

According to the utility model discloses a parallel detection mechanism's of PCB board an embodiment, wherein, this reverse side detects conveying mechanism still includes: the second servo motor is arranged at one end of the second strip-shaped support and connected with a rotating shaft of the second driving belt pulley, and can drive the second driving belt pulley to rotate for driving the second synchronous belt.

According to the utility model discloses a parallel detection mechanism's of PCB board embodiment, wherein, this feed mechanism includes: the tray lifting and descending mechanism, the material taking module and the tray moving module are arranged on the tray; the PCB to be tested is placed on the loading carrying disc, the material taking module picks up at least one PCB, then the PCB is placed on the first jig, after the PCB is picked up, the disc moving module moves the empty carrying disc to the position of the empty disc, the carrying disc of the PCB to be tested on the second layer rises to the first layer through the carrying disc lifting and lowering mechanism, and the carrying disc at the position of the empty disc descends by one layer through the carrying disc lifting and lowering mechanism.

According to the utility model discloses a parallel detection mechanism's of PCB board an embodiment, wherein, this PCB board detection mechanism still includes: vertical back-to-back folding mechanism, this vertical back-to-back folding mechanism includes: the horizontal plane rotating cylinder, the lifting cylinder and the vertical plane rotating cylinder are stacked and erected in sequence; the transverse plane rotating cylinder drives the vertical back-to-back folding mechanism to rotate so as to drive the PCB to rotate in the transverse plane; the lifting cylinder drives the PCB to do lifting action; this vertical plane revolving cylinder is connected with the sucking disc, and after the PCB board that the sucking disc will detect was lived, this vertical plane revolving cylinder drove the PCB board and rotates vertically.

According to the utility model discloses a parallel detection mechanism's of PCB board an embodiment, wherein, unloading mechanism includes: the device comprises a carrying disc lifting and descending mechanism, a blanking module and a disc moving module; the blanking module picks up the PCB from the vertical back-to-back folding mechanism after overturning, inserts the PCB onto the empty carrying tray, after the empty carrying tray is fully inserted, the tray moving module places the fully inserted carrying tray at a blanking position, the carrying tray lifting and descending mechanism lifts the second layer of empty carrying tray by one layer, and the carrying tray lifting and descending mechanism lowers the full carrying tray by one layer.

According to the utility model discloses a parallel detection mechanism's of PCB board embodiment, wherein, acquisition mechanism includes before the upset: sideslip cylinder, clamping jaw, lift cylinder control respectively and acquire the mechanism and drive the PCB board and carry out sideslip and lift action between this first tool and this tilting mechanism before this upset, and the clamping jaw is used for snatching the PCB board.

To sum up, the utility model discloses a parallel detection mechanism of PCB board degree of automation is high, can accomplish the last unloading of PCB board automatically, and two inspection passage simultaneous movement, can once only carry out the last unloading of two PCB boards, and detection efficiency is high, can accomplish the PCB board detection of extensive a large amount with high efficiency.

Drawings

Fig. 1 is a schematic view of the parallel detection mechanism for PCB board of the present invention;

fig. 2 is a schematic view of a detection part of the parallel detection mechanism for PCB boards of the present invention;

FIG. 3 is a schematic view of the mechanism before turning;

FIG. 4 is a schematic diagram of a PCB parallel detection mechanism;

fig. 5 is a schematic view of the vertical back-to-back folding mechanism.

Detailed Description

In order to make the objects, contents, and advantages of the present invention clearer, the following description of the embodiments of the present invention is made with reference to the accompanying drawings and examples.

Fig. 1 shows the utility model discloses the parallel detection mechanism's of PCB board schematic diagram, fig. 2 shows that the utility model discloses the parallel detection mechanism's of PCB board detection part schematic diagram, as shown in fig. 1 and fig. 2, the parallel detection mechanism of PCB board includes: feed mechanism 1, detection mechanism 2 and unloading mechanism 3.

As shown in fig. 1, the feeding mechanism 1, the detecting mechanism 2 and the discharging mechanism 3 are all arranged on a rack, the feeding mechanism 1 and the discharging mechanism 3 are sequentially arranged on one side of the rack, and the detecting mechanism 2 is arranged on the other side of the rack.

As shown in fig. 1, the feeding mechanism 1 is used for transferring a PCB to be detected to the detection mechanism 2, and the discharging mechanism 3 is used for obtaining the detected PCB from the detection mechanism 2 and performing discharging operation.

As shown in fig. 1, the feeding mechanism 1 includes: a full-tray loading mechanism 101, an empty tray loading mechanism 102, a tray loading lifting and lowering mechanism 108 and a tray moving module 106. Unloading mechanism 2 includes: a full-tray blanking mechanism 103, a tray blanking empty-tray mechanism 104, a tray loading lifting mechanism 105 and a tray moving module 107.

As shown in fig. 1, a certain number of PCBs to be tested (for example, 10 layers of PCBs) are manually or mechanically placed on the full-tray loading mechanism 101, and the material-taking module sucks the PCBs and then places the PCBs on the detection channel of the detection mechanism 2. After the PCB boards in the full-loading mechanism 101 are taken out, the tray moving module 106 moves the empty loading tray to the position of the empty loading tray mechanism 102, the full loading tray on the second layer of the full-loading mechanism 101 is lifted by one layer through the tray loading lifting mechanism 108, and the empty loading tray on the empty loading tray mechanism 102 is lifted by one layer through the tray loading lifting mechanism 108.

As shown in fig. 1, the blanking module sequentially inserts the detected PCBs picked up from the detection channels of the detection mechanism 2 onto the blanking tray of the blanking empty tray mechanism 104, and after a certain number of layers (for example, 10 layers) of the blanking tray of the blanking empty tray mechanism 104, the blanking tray of the blanking full tray mechanism 104 is lowered by one layer through the tray lifting and lowering mechanism 105. The tray moving module puts the blanking tray on the first layer of the blanking empty tray mechanism 103 to the position of the blanking full tray mechanism 104. And the blanking empty tray mechanism 103 raises the blanking tray of the second layer by one layer through the tray lifting and lowering mechanism 105. The blanking tray on the blanking full tray mechanism 104 is used for taking down the detected PCB manually or by a machine.

As shown in fig. 2, the detection mechanism 2 includes: a front side detection conveying mechanism 201, a back side detection conveying mechanism 202, a turnover mechanism 203, a visual detection mechanism 204 and a clamping mechanism before turnover 205. The front surface detection conveyance mechanism 201 includes: the device comprises a driving belt pulley 11, a driven belt pulley 12, a servo motor 31, a visual detection light source 6, a synchronous belt 23 and a PCB jig 20. The reverse side detection conveyance mechanism 202 includes: turnover mechanism support 17, visual detection light source 8, PCB tool 21, driving pulley (not shown in the figure), driven pulley (not shown in the figure), servo motor, belt splint (not shown in the figure), hold-in range (not shown in the figure), visual detection light source 8, clamping jaw cylinder 16.

As shown in fig. 1 and 2, the driving pulley 11 and the driven pulley 12 are disposed at two ends of the bar-shaped bracket of the front detection conveying mechanism 201, and the synchronous belt 23 is sleeved on the driving pulley 11 and the driven pulley 12, so that the synchronous belt 23 can rotate around the driving pulley 11 and the driven pulley 12 in a circulating manner. The PCB jig 20 is arranged at the upper end of the bar-shaped support in a sliding mode and can slide along the upper end of the bar-shaped support. The belt clamping plate 22 is respectively fixed at the lower end of the PCB jig 20 and the outer side of the synchronous belt 23, so that the synchronous belt 23 can drive the PCB jig 20 to slide along the upper end of the bar bracket through the belt clamping plate 22. Servo motor 31, the setting is in the one end of the bar support of positive detection conveying mechanism 201, and servo motor 31 is connected with drive pulley 11's pivot, can drive pulley 11 and rotate for drive hold-in range 23. And the visual detection light source 6 is arranged on a rack of the PCB parallel detection mechanism, corresponds to the visual detection mechanism 204 and is used for providing a light source for the visual detection mechanism 204. The vision inspection mechanism 204 faces the moving path of the PCB jig 20 to photograph the PCB on the PCB jig 20.

As shown in fig. 1 and 2, the turning mechanism 203 is connected to one end of a rotating shaft 14 via a coupling 30, the rotating shaft 14 is connected to and supported by a bracket 13, and the rotating shaft 14 is connected to a jaw of the turning mechanism 203. The clamping jaw air cylinder 16 is connected with the clamping jaw of the turnover mechanism 203, and drives the clamping jaw of the turnover mechanism 203 to clamp the PCB. The clamping mechanism 205 before turning over corresponds to the PCB board on the PCB jig 20 and can clamp the PCB board. The clamping mechanism 205 clamps the PCB on the jig 20 of the front conveying mechanism 201 before turning, then moves transversely, puts the clamping jaw of the turning mechanism 203, clamps the PCB by the clamping jaw of the clamping jaw cylinder 16 driving the turning mechanism 203, turns over the turning mechanism 203, and puts the PCB on the jig 21 of the reverse side detection conveying mechanism 202. The turnover mechanism bracket 17 is fixed on a rack of the parallel detection mechanism of the PCB and is used for supporting the reverse side detection conveying mechanism 202.

As shown in fig. 1 and fig. 2, the driving pulley and the driven pulley are respectively disposed at two ends of the bar-shaped bracket of the reverse side detection conveying mechanism 202, and the synchronous belt is sleeved on the driving pulley and the driven pulley, so that the synchronous belt can circularly rotate around the driving pulley and the driven pulley. The PCB jig 21 is arranged at the upper end of the bar-shaped support of the reverse side detection conveying mechanism 202 in a sliding mode and can slide along the upper end of the bar-shaped support. The belt clamping plate is respectively fixed at the lower end of the PCB jig 21 and the outer side of the synchronous belt, so that the synchronous belt can drive the PCB jig 21 to slide along the upper end of the strip-shaped support through the belt clamping plate. The servo motor is arranged at one end of the strip-shaped support of the reverse side detection conveying mechanism 202, is connected with a rotating shaft of the driving belt pulley, and can drive the driving belt pulley to rotate for driving the synchronous belt. The visual inspection mechanism 7 faces the movement path of the PCB jig 21 to photograph the PCB on the PCB jig 21. And the visual detection light source 8 is arranged on a rack of the PCB parallel detection mechanism, corresponds to the visual detection mechanism 7 and is used for providing a light source for the visual detection mechanism 7.

Fig. 3 is a partial enlarged view of the pre-reversal gripping mechanism, and as shown in fig. 3, the pre-reversal gripping mechanism 205 includes: an up-down cylinder 2051, a traversing cylinder 2052, a clamping jaw cylinder and clamping jaws. The clamping jaw air cylinder controls the action of the clamping jaw. The front detection conveying mechanism 201 conveys the PCB to the tail end of the mechanism through the jig 20, the transverse moving cylinder 2052 moves to the left position, and the upper and lower cylinders 2051 descend to clamp the PCB; the up-down cylinder 2051 rises, the transverse moving cylinder 2052 moves to the right position, the up-down cylinder 2051 descends, the clamping jaw is loosened, and the PCB is placed on the clamping jaw of the turnover mechanism 203. The turnover mechanism 203 turns over to place the PCB on the jig 21 of the reverse side detection conveying mechanism, and the clamping jaw air cylinder 16 of the turnover mechanism 203 controls to release the PCB.

As shown in fig. 1 and fig. 2, the feeding mechanism 1 places the PCB boards in the feeding module tray 101 on the fixture 20 of the front conveying mechanism 201 of the channel; the front conveying mechanism 201 drives the jig to make linear motion under the camera of the vision inspection mechanism 204. The line scan camera of the vision inspection mechanism 204 scans the front side of the PCB. The jig 20 stops when the mechanism is at the end. Before turning over, the clamping mechanism 205 clamps the PCB product, moves to the position above the turning mechanism 203, gradually descends to the position with the same height as the turning mechanism 203, loosens the PCB, and places the PCB on the turning mechanism 203. The clamping mechanism 205 clamps the PCB before turning, the clamping mechanism 205 ascends before turning, the turning mechanism 203 turns the PCB and places the PCB on the jig 21 of the reverse side detection conveying mechanism 202. The synchronous belt of the reverse side detection conveying mechanism 202 drives the jig 21 to make linear motion under the camera of the visual detection mechanism 7, and the linear scanning camera of the visual detection mechanism 7 scans the reverse side of the PCB. After the scanned PCB is clamped, the PCB is placed in a blanking carrying disc by a blanking module 3.

Fig. 4 is a schematic diagram of a parallel detection mechanism for PCB boards, as shown in fig. 4, the parallel detection mechanism for PCB boards comprises two PCB board detection mechanisms capable of working independently, the two detection mechanisms can cooperate with each other to work together when working, and the first detection mechanism comprises: a front side detection conveying mechanism 201, a vertical back-to-back folding mechanism 207, a back side detection conveying mechanism 202, a turnover mechanism 203 and the like. The second bar detecting mechanism includes: a front side detection conveying mechanism 301, a vertical back-to-back folding mechanism 307, a back side detection conveying mechanism 302, a turnover mechanism 303, and the like. The first detecting mechanism includes a visual detecting mechanism 204 of the front detecting and conveying mechanism 201 and a visual detecting mechanism 206 of the back detecting and conveying mechanism 202. The first bar detecting mechanism includes a visual detecting mechanism 304 of the obverse-side detecting conveyance mechanism 301 and a visual detecting mechanism 306 of the reverse-side detecting conveyance mechanism 302. The vertical back-to-back folding mechanism 207 and the vertical back-to-back folding mechanism 307 correspond to each other, and are configured to turn over the PCB boards of the first detection mechanism and the second detection mechanism respectively, align the PCB boards back to back, and perform a boxing operation. Or the vertical back-to-back folding mechanism 207 and the vertical back-to-back folding mechanism 307 are used for respectively turning the PCB boards of the first detection mechanism and the second detection mechanism, aligning the PCB boards in the same direction and then performing boxing operation. Of course, in actual use, the detected PCB board may be directly blanked without using the vertical back-to-back folding mechanism 207 and the vertical back-to-back folding mechanism 307.

Fig. 5 is a schematic diagram of the vertical back-to-back folding mechanism, and as shown in fig. 5, the vertical back-to-back folding mechanism 207 and the vertical back-to-back folding mechanism 307 are identical in structure and symmetrical to each other. The vertical back-to-back folding mechanism 207 includes: the rotating cylinder 2071 drives the mechanism to rotate 180 degrees, and the feeding is to be tested, but the feeding direction is not uniform, so the discharging does a rotating motion, and 180 degrees can be achieved. The lifting cylinder 2072 is used for driving the PCB to lift in cooperation with the two guide posts. The rotary cylinder 2073, in cooperation with the suction cup 2074 on the rotary shaft mechanism, rotates the vertical movement after sucking the detected PCB.

As shown in fig. 5, taking the vertical back-to-back folding mechanism 207 as an example, after the PCB is detected, the vertical back-to-back folding mechanism 207 moves to the end of the reverse side detection conveying mechanism 202 under the driving of the traverse module, the lifting cylinder 2072 drives the mechanism to move down, the rotary cylinder 2073 cooperates with the suction cup 2074 on the rotary shaft mechanism to suck the PCB, and the lifting cylinder 2072 drives the mechanism to move up. If the PCB does not need to be back-to-back corresponding, the PCB is directly vertically moved by the rotating cylinder 2073 mechanism, the transverse moving module drives the PCB to move to the upper part of the blanking mechanism, the lifting cylinder 2072 drives the mechanism to descend, and the PCB is respectively inserted into the blanking carrying tray of the blanking full tray mechanism 103.

As shown in fig. 5, if two PCBs are required to be arranged in pairs in a back-to-back correspondence manner, the detected PCBs are rotated vertically after being sucked, and the two PCBs are stacked back to back, clamped by the blanking mechanism, and placed in the blanking tray, corresponding to the vertically rotated PCBs of the vertical back-to-back folding mechanism 307.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a parallel detection mechanism of PCB board which characterized in that includes:

two PCB board detection mechanisms working independently or cooperatively;

any PCB detection mechanism comprises a front detection conveying mechanism, a first visual detection light source and a first visual detection mechanism;

this openly detect conveying mechanism includes: the device comprises a first strip-shaped bracket, a first driving belt pulley, a first driven belt pulley, a first belt clamping plate, a first synchronous belt and a first jig;

the first synchronous belt is sleeved on the first driving belt pulley and the first driven belt pulley, so that the first synchronous belt can circularly rotate around the first driving belt pulley and the first driven belt pulley; the first jig is arranged at the upper end of the bar-shaped bracket in a sliding manner and can slide along the upper end of the first bar-shaped bracket; the first belt clamping plate is respectively connected with the first jig and the first synchronous belt, so that the first synchronous belt can drive the first jig to slide along the first strip-shaped support through the first belt clamping plate;

the first visual detection light source corresponds to the first visual detection mechanism and is used for providing light source for the first visual detection mechanism; the first visual detection mechanism faces the motion path of the first jig so as to shoot the PCB on the first jig.

2. The PCB parallel detection mechanism of claim 1, wherein the PCB detection mechanism further comprises: the reverse side detection conveying mechanism, the second visual detection light source and the second visual detection mechanism are arranged on the machine body;

the reverse side detects conveying mechanism should include: the second jig, the second driving belt pulley, the second driven belt pulley, the second belt clamping plate, the second strip-shaped bracket and the second synchronous belt;

the second driving belt pulley and the second driven belt pulley are arranged at two ends of the second bar-shaped support, the second synchronous belt is sleeved on the second driving belt pulley and the second driven belt pulley, and the second synchronous belt can rotate circularly around the second driving belt pulley and the second driven belt pulley; the second jig is arranged at the upper end of the bar-shaped support in a sliding manner and can slide along the upper end of the second bar-shaped support; the second belt clamping plate is respectively fixed at the lower end of the second jig and the upper side of the second synchronous belt, so that the second synchronous belt can drive the second jig to slide along the second strip-shaped bracket through the second belt clamping plate;

the second visual detection light source is arranged on a rack of the PCB parallel detection mechanism, corresponds to the second visual detection mechanism and is used for providing light source for the second visual detection mechanism; the second visual detection mechanism faces the motion path of the second jig so as to shoot the other surface of the PCB on the second jig.

3. The PCB parallel detection mechanism of claim 2, wherein the PCB detection mechanism further comprises: a turnover mechanism and a pre-turnover acquisition mechanism;

the pre-overturning acquisition mechanism is arranged at the moving tail end of the first jig and is used for clamping and releasing the PCB from the first jig; the acquisition mechanism is corresponding to the unloading position of first tool before this upset, gets the PCB board from this unloading clamp after, places at this tilting mechanism, and this PCB board can be stabilized and overturn to this tilting mechanism, and the PCB board after will overturning is put on this second tool.

4. The PCB parallel detection mechanism of claim 1, further comprising: the feeding mechanism and the blanking mechanism are sequentially arranged on the rack and positioned at two ends of the PCB detection mechanism;

the feeding mechanism is used for placing the PCB on a first jig of any one PCB detection mechanism from the feeding carrying disc; the blanking mechanism is used for placing the scanned PCB into the blanking loading disc from the second fixture.

5. The parallel PCB inspection mechanism of claim 1, wherein the front inspection conveyor further comprises: the first servo motor is arranged at one end of the first strip-shaped support and connected with a rotating shaft of the first driving belt pulley, and can drive the first driving belt pulley to rotate for driving the first synchronous belt.

6. The parallel PCB inspection mechanism of claim 2, wherein the reverse side inspection conveyor further comprises: the second servo motor is arranged at one end of the second strip-shaped support and is connected with the rotating shaft of the second driving belt pulley, and the second servo motor can drive the second driving belt pulley to rotate and is used for driving the second synchronous belt.

7. The PCB parallel detection mechanism of claim 4, wherein the feeding mechanism comprises: the tray lifting and descending mechanism, the material taking module and the tray moving module are arranged on the tray;

the PCB to be tested is placed on the loading carrying disc, the material taking module picks up at least one PCB, then the PCB is placed on the first jig, after the PCB is picked up, the disc moving module moves the empty carrying disc to the position of the empty disc, the carrying disc of the PCB to be tested on the second layer rises to the first layer through the carrying disc lifting and lowering mechanism, and the carrying disc at the position of the empty disc descends by one layer through the carrying disc lifting and lowering mechanism.

8. The PCB parallel detection mechanism of claim 1, wherein the PCB detection mechanism further comprises: a vertical back-to-back folding mechanism,

this vertical back-to-back folding mechanism includes: the horizontal plane rotating cylinder, the lifting cylinder and the vertical plane rotating cylinder are stacked and erected in sequence;

the transverse plane rotating cylinder drives the vertical back-to-back folding mechanism to rotate so as to drive the PCB to rotate in the transverse plane; the lifting cylinder drives the PCB to do lifting action; this vertical plane revolving cylinder is connected with the sucking disc, and after the PCB board that the sucking disc will detect was lived, this vertical plane revolving cylinder drove the PCB board and rotates vertically.

9. The parallel detection mechanism of PCB board of claim 8, characterized by that, the blanking mechanism includes: the tray lifting and descending mechanism, the blanking module and the tray moving module are arranged on the tray;

the blanking module picks up the PCB after overturning from the vertical back-to-back folding mechanism, inserts the PCB onto the empty carrying tray, after the empty carrying tray is fully inserted, the tray moving module puts the fully inserted carrying tray to a blanking position, the carrying tray lifting and lowering mechanism lifts the second layer of empty carrying tray by one layer, and the carrying tray lifting and lowering mechanism lowers the fully carried tray by one layer.

10. The PCB panel parallelism detecting mechanism of claim 1, wherein the pre-flip acquiring mechanism comprises: sideslip cylinder, clamping jaw, lift cylinder, acquisition mechanism drives the PCB board and carries out sideslip and lift action between this first tool and this tilting mechanism before controlling this upset respectively, and the clamping jaw is used for snatching the PCB board.