CN114655661A

CN114655661A - PCB detection device and detection method

Info

Publication number: CN114655661A
Application number: CN202210259033.2A
Authority: CN
Inventors: 易恒伟
Original assignee: Shenzhen Hengtian Weiye Technology Co ltd
Current assignee: Shenzhen Hengtian Weiye Technology Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-06-24

Abstract

The invention discloses a PCB detection device and a detection method, which comprise a rack, a main conveying belt arranged on the rack and a detection body arranged on the rack, wherein a feed inlet and a discharge outlet of the detection body are both positioned on a conveying path of the main conveying belt, an installation frame is arranged at the position, close to one end of the feed inlet of the detection body, of the main conveying belt of the rack, and is rotatably provided with a turntable and a first driving piece for driving the turntable to rotate; the carousel is provided with along circumference interval and is equipped with the rack that detects the PCB board, the mounting bracket is equipped with and is arranged in the main conveyer belt of placing in proper order of waiting to detect the PCB board that is arranged in corresponding the rack of main conveyer belt feed end department and places the subassembly. This application has the manual work that reduces and use in the PCB board carries out the testing process, improves detection efficiency's effect.

Description

PCB detection device and detection method

Technical Field

The invention relates to the field of PCB detection equipment, in particular to a PCB detection device and a detection method.

Background

At present, with the continuous development of society, the use of the PCB is more and more common, the PCB is also called a printed circuit board, and is called a printed circuit board for short, the PCB takes an insulating plate as a base material, the insulating plate is cut into a certain size, at least one conductive pattern is attached to the insulating plate, and holes (such as element holes, fastening holes, metalized holes and the like) are distributed on the insulating plate and used for replacing a chassis of an electronic component of the prior device and realizing the mutual connection of the electronic component; and the quality inspection is performed after the PCB board is manufactured.

Present, detection device includes the frame, install in the frame and the transport platform that the level set up, install in the frame and be located the detection body on carrying the platform direction of delivery, and the workman will wait that the PCB board that detects places in proper order in the feed inlet position of carrying the platform, and the PCB board is carried to detection body department from carrying the bench and is detected.

Aiming at the related technologies, the inventor thinks that the defect of low efficiency exists in the prior art that the PCB to be detected is placed into the feeding hole of the conveying table through manual work.

Disclosure of Invention

In order to reduce the labor used in the detection process of the PCB and improve the detection efficiency, the application provides a PCB detection device and a detection method.

In a first aspect, the present application provides a PCB detection apparatus, which adopts the following technical scheme:

a PCB detection device comprises a rack, a main conveying belt arranged on the rack and a detection body arranged on the rack, wherein a feeding hole and a discharging hole of the detection body are both positioned on a conveying path of the main conveying belt, a mounting frame is arranged at the position, close to one end of the feeding hole of the detection body, of the main conveying belt, and is rotatably provided with a turntable and a first driving piece for driving the turntable to rotate; the carousel is provided with along circumference interval and is equipped with the rack that detects the PCB board, the mounting bracket is equipped with and is arranged in the main conveyer belt of placing in proper order of waiting to detect the PCB board that is arranged in corresponding the rack of main conveyer belt feed end department and places the subassembly.

Through adopting above-mentioned technical scheme, the workman will fill the rack that waits to detect the PCB board and place at the carousel, then start first driving piece, the drive carousel rotates for the rack removes to corresponding main conveyer belt feed end department, wait to detect the PCB board in with the rack through placing the subassembly and put into main conveyer belt in proper order, wait to detect the PCB board and then carry to detecting this internal detection through main conveyer belt, this process reduces the manual work that uses in the PCB board carries out the testing process, improves detection efficiency.

Preferably, the placement assembly comprises: the material taking rod is arranged between the rotary table and the conveying table, the mounting plate is arranged on the material taking rod in a sliding manner in the vertical direction, and the sucker is arranged on the downward side of the mounting plate; the placement assembly further comprises: and the second driving part is used for driving the mounting plate to move to a position right above the placing frame provided with the PCB to be detected and right above the main conveying belt, and the third driving part is used for driving the mounting plate to slide.

By adopting the technical scheme, the mounting plate is driven to move to a position right above the placing frame of the PCB to be detected through the second driving piece, then the mounting plate is driven to move towards the placing frame through the third driving piece until the suction nozzle and the PCB positioned at the topmost position in the placing frame are enabled to move, and then the mounting plate is driven to vertically move upwards through the third driving piece, so that the PCB is taken away from the placing frame; and finally, the PCB is driven to move right above the main conveying belt through the second driving piece, and the PCB is placed on the main conveying belt, so that the PCB can be fed efficiently.

Preferably, the rack is provided with a connecting frame at one end of the main conveying belt close to the discharge port of the detection body, the connecting frame is provided with an auxiliary conveying belt communicated with the main conveying belt, the connecting frame is provided with baffles at two sides of the auxiliary conveying belt, an abnormal collecting position and a normal collecting position are arranged between the two baffles at intervals in the conveying direction of the auxiliary conveying belt, and empty placing frames are arranged at the positions of the baffles at the abnormal collecting position and the normal collecting position; the PCB detection device further comprises: and the collecting components are used for respectively adding the PCB which moves to the abnormal collecting position or the normal collecting position into the corresponding placing racks.

Through adopting above-mentioned technical scheme, it detects the back to accomplish the PCB board to detect the body, obtain the testing result, thereby carry the PCB board to vice conveyer belt through main conveyer belt, then remove the PCB board to corresponding unusual collection position or normal collection position department according to the testing result, put into the empty rack that corresponds through collecting the PCB board that the subassembly will be in unusual collection position or normal collection position after that, thereby make the PCB board that finishes detecting accomplish to collect in the rack, further reduced the use to the manual work, the workman only need with the rack that corresponds the position take out can, improve detection efficiency.

Preferably, a feeding hole for feeding the PCB is formed in the bottom of the placing frame, an accommodating groove is formed in the inner wall of the placing frame and in the circumferential direction at a position corresponding to the feeding hole, a material blocking rod is arranged in the accommodating groove, one end of the material blocking rod is hinged in the accommodating groove, the other end of the material blocking rod extends out of the accommodating groove, and the part, located in the accommodating groove, of the material blocking rod abuts against one side, close to the bottom of the placing frame, of the accommodating groove; the collection assembly includes: the connecting frame is located under the abnormal collecting position and the normal collecting position and is provided with a material ejecting plate, and the fourth driving part is used for driving the material ejecting plate to move towards the vertical direction.

By adopting the technical scheme, when the detected PCB is conveyed to the abnormal collecting position or the normal collecting position, the fourth driving part is started to drive the corresponding ejector plate to vertically move upwards, and the ejector plate continues to move towards the collecting frame after the PCB is ejected to the feeding port, so that the material blocking rod is transferred into the accommodating groove; after the PCB board got into the rack completely in, the striker rod rotated to pan feeding mouth department again to after the drive kicking board left the rack, the PCB board then the butt was at the striker rod, made the PCB board stabilize in the rack, the completion was to the collection of PCB board, and collection efficiency is high.

Preferably, the position of the turntable, which is used for taking the empty storage rack, is a discharging position, a storage rack with an opening at the upper part is arranged at the position, which is close to the feeding end of the main conveyor belt, of the rack, a material moving track is erected right above the storage rack, a sliding block is installed on the material moving track in a sliding manner, and the material moving track is provided with a fifth driving piece used for driving the sliding block to move between the position right above the discharging position and the position right above the storage rack; the sliding block is provided with a connecting plate in a sliding manner towards the vertical direction, and the sliding block is provided with a sixth driving piece for driving the connecting plate to slide; one side that the connecting plate faces downwards is equipped with the couple, the top of rack is equipped with the link that adapts to in the couple.

By adopting the technical scheme, after all the PCBs in the placing rack provided with the PCBs to be detected are taken away, the rotating disc is driven to rotate, so that the placing rack is moved to the discharging position, and the hanging hook is hung in the hanging ring; then start sixth driving piece drive connecting plate vertical rebound, restart fifth driving piece drive sliding block and remove to the position directly over the storage frame, even get the rack and remove to the position directly over the storage frame, start the sixth driving piece at last for the rack is put into and is accomplished the collection in the storage frame, makes things convenient for the workman to use the empty rack.

Preferably, the frame is located one side position of main conveyer belt and is equipped with rodless cylinder, rodless cylinder extends into the link from the direction of delivery of the feed end of main conveyer belt towards the direction of delivery of main conveyer belt, the position of rodless cylinder corresponding the feed end of main conveyer belt is erect in rodless cylinder to the storage frame, the opening that supplies the rack roll-off is seted up to the bottom of storage frame, the storage frame is equipped with and is used for following the opening roll-off in proper order with the rack and place the pay-off subassembly at rodless cylinder's slider.

Through adopting above-mentioned technical scheme, after the rack that is located unusual collection position or normal collection position department is collected together, will be located the hollow rack roll-off opening of storage rack through the pay-off subassembly to place in the slider of rodless cylinder, carry empty rack to corresponding unusual collection position or normal collection position department through rodless cylinder at last, make the workman more conveniently change empty rack and the rack of unusual collection position or normal collection position department.

Preferably, a pair of limiting rails for horizontally clamping the placing rack is arranged between the two baffles and corresponding to the abnormal collecting position and the normal collecting position, sliding inlets for the placing rack to enter are formed in the positions, close to the baffles of the rodless cylinder, corresponding to the abnormal collecting position and the normal collecting position, and sliding outlets for the placing rack to leave are formed in the positions, corresponding to the abnormal collecting position and the normal collecting position, of the other baffle; the rack is provided with a seventh driving piece for enabling the placing frame of the sliding block positioned on the rodless cylinder to enter the space between the two baffle plates from the sliding inlet.

By adopting the technical scheme, after the empty placing rack is moved to the abnormal collecting position or the normal collecting position, the seventh driving piece is started to push the empty placing rack to slide into the position between the two baffle plates from the slide-in opening and be clamped into the limiting track, and meanwhile, the empty placing rack can push the placing rack filled with the detected PCB to slide out from the slide-out opening; therefore, the placing frame can be replaced, and a worker can directly take the placing frame filled with the detected PCB from the sliding-out opening.

In a second aspect, the present application provides a PCB detection method, which adopts the following technical scheme:

a PCB detection method is based on the PCB detection device, and comprises the following steps:

when acquiring the trigger detection starting instruction information, acquiring the label information of the placing rack close to the feeding end of the main conveying belt;

acquiring the number information of the PCBs to be detected in the placing rack according to the label information of the placing rack, and triggering the placing rack to collect an instruction when the number of the PCBs to be detected is reduced to 0;

acquiring the quantity information of the abnormal PCBs at the abnormal collecting position and the quantity information of the normal PCBs at the normal collecting position, and triggering a replacement instruction of the placement rack when the quantity of the abnormal PCBs or the quantity of the normal PCBs reaches a preset threshold value.

By adopting the technical scheme, after the detection starting instruction is triggered, the corresponding mark number of the placing rack positioned close to the feeding end of the main conveying belt is obtained according to the mark number of each placing rack; calculating the number of the PCBs to be detected in the placing rack according to the bearing weight of the label corresponding to the placing rack, when the bearing weight is reduced to 0, namely the number of the PCBs to be detected is reduced to 0, triggering a placing rack collecting instruction, rotating the rotary table, rotating the empty PCBs away from the feeding end close to the main conveying belt, and collecting the empty PCBs on the storage rack; the new placing rack provided with the PCB to be detected is moved to a position close to the feeding end of the main conveying belt, so that the use of workers is reduced; and calculate the normal PCB board quantity that is located the unusual PCB board quantity information of collecting the position department and normally collects the position department again to compare with predetermined threshold value, after the PCB board quantity that needs the dress of single rack is reached to unusual PCB board quantity or normally collect the PCB board quantity of position department, then trigger the rack and change the instruction, will be located the hollow rack of storage frame and change the rack of unusual collecting position department and normal collecting position department, further reduce the use to the workman.

Preferably, after the number information of the abnormal PCBs at the abnormal collecting positions and the number information of the normal PCBs at the normal collecting positions are obtained, and when the number of the abnormal PCBs or the number of the normal PCBs reaches a predetermined threshold value, a replacement instruction of the rack is triggered, the method further includes:

acquiring abnormal PCB increasing quantity information and normal PCB increasing quantity information when the number of detected PCBs reaches a preset number according to the abnormal PCB quantity information and the normal PCB quantity information;

judging whether the abnormal PCB increasing number is larger than the normal PCB increasing number or not according to the abnormal PCB increasing number information and the normal PCB increasing number information;

if yes, forming PCB quality abnormal information by the abnormal PCB increasing quantity information and the normal PCB increasing quantity information, and sending the PCB quality abnormal information to the terminal.

By adopting the technical scheme, when a preset number of PCBs are detected, the number of abnormal PCBs and the number of normal PCBs increased within the time of detecting the preset number of PCBs can be calculated according to the number of abnormal PCBs and the number of normal PCBs; when the increase quantity of the abnormal PCB is larger than the increase quantity of the normal PCB, the quality of the PCB with the preset quantity is insufficient, the abnormal PCB increase quantity and the normal PCB increase quantity form PCB quality abnormal information and are sent to the terminal, and workers are reminded to perform problem troubleshooting on the production quality of the PCB.

Preferably, after the acquiring of the abnormal PCB number information at the abnormal collecting position and the normal PCB number information at the normal collecting position, and when the abnormal PCB number or the normal PCB number reaches a predetermined threshold, triggering a rack replacement instruction, the method further includes:

and acquiring the information of the number of the placing racks on which the PCB to be detected is arranged on the turntable, and triggering a placing rack recycling instruction when the number of the placing racks is reduced to 0.

Through adopting above-mentioned technical scheme, carry out the weight detection according to the rack to lieing in on the carousel, if when bearing weight was greater than 0, then judge to be equipped with the rack that waits to detect the PCB board, when the weight that bears that detects out each rack of carousel all equals 0, then explain the detection to the PCB board and accomplish, trigger the rack again and retrieve the instruction, all the racks that will lie in on the sabot are all collected into the storage frame, reach centralized processing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. a worker places the placing rack filled with the PCB to be detected on the rotary table, then starts the first driving piece to drive the rotary table to rotate, so that the placing rack moves to the position corresponding to the feeding end of the main conveying belt, then the PCB to be detected in the placing rack is sequentially placed into the main conveying belt through the placing component, and the PCB to be detected is conveyed into the detection body through the main conveying belt to be detected, so that the labor used in the detection process of the PCB is reduced, and the detection efficiency is improved;

2. when the detected PCB is conveyed to the abnormal collecting position or the normal collecting position, the fourth driving part is started to drive the corresponding ejector plate to move vertically upwards until the PCB is ejected to the feeding port, and then the ejector plate continues to move towards the collecting frame, so that the material blocking rod is transferred into the accommodating groove; after the PCB completely enters the placing frame, the stop bar rotates to the feeding port again, so that after the driving ejector plate leaves the placing frame, the PCB abuts against the stop bar, the PCB is stabilized in the placing frame, the collection of the PCB is completed, and the collection efficiency is high;

3. when the empty placing rack moves to the abnormal collecting position or the normal collecting position, the seventh driving piece is started to push the empty placing rack to slide into a position between the two baffle plates from the slide-in opening and be clamped into the limiting track, and meanwhile, the empty placing rack can push the placing rack filled with the detected PCB to slide out from the slide-out opening; therefore, the placing rack can be replaced, and workers can directly take away the placing rack filled with the detected PCB from the sliding-out opening.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic view of the structure of the turntable of the present application.

Fig. 3 is a schematic view of the structure of the connection frame of the present application.

Fig. 4 is a cross-sectional view of the attachment frame structure of the present application.

Fig. 5 is a schematic view of the storage rack structure of the present application.

Fig. 6 is a cross-sectional view of a magazine structure of the present application.

FIG. 7 is a flowchart illustrating a PCB inspection method according to an embodiment of the present invention.

Fig. 8 is a flowchart after step S30 in the PCB detection method according to an embodiment of the present application.

Description of reference numerals:

1. a frame; 11. a main conveyor belt; 12. detecting a body; 13. a rodless cylinder; 14. a storage rack; 141. an opening; 142. a moving block; 143. an insertion block; 144. a splicing air cylinder; 2. a mounting frame; 21. a turntable; 211. a storage groove; 212. discharging the material level; 22. a first driving member; 23. taking a material rod; 24. mounting a plate; 25. a suction nozzle; 26. a second driving member; 27. a third driving member; 3. placing a rack; 31. a limiting groove; 32. a feeding port; 33. accommodating grooves; 34. a material blocking rod; 35. hanging a ring; 36. inserting grooves; 4. a connecting frame; 41. a secondary conveyor belt; 42. a baffle plate; 421. an exception collect bit; 422. a normal collection bit; 423. a slide-in port; 424. a slide-out port; 43. a limiting track; 44. a material ejecting plate; 45. a fourth drive; 46. a seventh driving member; 5. a material moving track; 51. a sliding block; 52. a fifth driving member; 53. a sixth driving member; 54. a connecting plate; 55. and (4) hanging hooks.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses a PCB detection device. Referring to fig. 1, the PCB detection apparatus includes a frame 1, a main conveyor belt 11 and a detection body 12, the main conveyor belt 11 is fixedly installed on the frame 1, and the main conveyor belt 11 extends in a horizontal direction; detect body 12 fixed mounting and erect at main conveyer belt 11 in frame 1, detect body 12, the feed inlet and the discharge gate that detect body 12 all are located the transport route of main conveyer belt 11 to place the PCB board back on main conveyer belt 11, the effect of accessible main conveyer belt 11 makes the PCB board carry into and detects in detecting body 12.

Referring to fig. 1 and 2, a mounting frame 2 is arranged at one end of the frame 1, which is located at the feed end of the main conveyor belt 11, a rotary table 21 is rotatably mounted on the mounting frame 2, the rotary table 21 is horizontally arranged, storage slots 211 are circumferentially and equally spaced at the top of the rotary table 21, a placing frame 3 provided with a PCB to be detected is clamped at each storage slot 211, and an opening 141 is formed above each placing frame 3; the position corresponding to one of the placing racks 3 on the rotary table 21 is close to the feeding end of the main conveying belt 11; mounting bracket 2 is equipped with first driving piece 22, and first driving piece 22 is the motor, and first driving piece 22 fixed mounting is at mounting bracket 2, the output shaft of first driving piece 22 and the intermediate position fixed connection of carousel 21 to can drive carousel 21 and rotate, make to be located each and put rack 3 of thing groove 211 department and remove to the position that is close to 11 feed end of main conveyer belt.

The mounting frame 2 is provided with a placing assembly, the placing assembly comprises a material taking rod 23, a mounting plate 24, a suction nozzle 25, a second driving piece 26 and a third driving piece 27, and the material taking rod 23 is rotatably mounted on the mounting frame 2 and is positioned between the rotary table 21 and the main conveying belt 11; the third driving member 27 is a cylinder, the third driving member 27 is fixedly installed at the top end of the material taking rod 23, and a piston rod of the third driving member 27 is vertically arranged downwards; the mounting plate 24 is horizontally arranged, and the mounting plate 24 is fixedly arranged on a piston rod of the third driving part 27; a plurality of suction nozzles 25 are arranged, and the suction nozzles 25 are uniformly arranged on the downward vertical side of the mounting plate 24; the second driving member 26 is a motor, the second driving member 26 is fixedly installed on the mounting frame 2, and an output shaft of the second driving member 26 is fixedly connected with the material taking rod 23; when the second driving member 26 drives the material taking rod 23 to rotate, the mounting plate 24 can be driven to move to a position right above the placing frame 3 and a position right above the main conveying belt 11, wherein the PCB to be detected is mounted on the placing frame 3, and therefore the PCB in the placing frame 3 can be conveyed to the main conveying belt 11 through the suction nozzle 25.

Referring to fig. 2 and 3, a connecting frame 4 is mounted at a position, close to a discharge port of the detection body 12, of the main conveyor belt 11 on the rack 1, an auxiliary conveyor belt 41 is fixedly mounted on the connecting frame 4, the auxiliary conveyor belt 41 extends towards the horizontal direction, and the auxiliary conveyor belt 41 is parallel to the main conveyor belt 11; the equal fixed mounting in both sides relatively has baffle 42 on the direction of delivery that link 4 corresponds vice conveyer belt 41, baffle 42 is vertical setting, and the position between two baffle 42 is equipped with unusual collection position 421 and normal collection position 422, and unusual collection position 421 and normal collection position 422 are towards the direction of delivery interval setting of vice conveyer belt 41, and the PCB board that wherein detects out unusually carries to unusual collection position 421 through vice conveyer belt 41, detects out that normal PCB board carries to normal collection position 422 through vice conveyer belt 41.

Referring to fig. 3 and 4, the abnormal collection position 421 and the normal collection position 422 are both provided with an empty placing rack 3, a pair of horizontal opposite-arranged limiting rails 43 is arranged between the two baffles 42 and corresponding to the abnormal collection position 421 and the normal collection position 422, the limiting rails 43 extend in the direction perpendicular to the conveying direction of the auxiliary conveyor belt 41, and the outer side wall of each placing rack 3 is provided with a limiting groove 31 for allowing the limiting rails 43 to slide in, so that the placing rack 3 can be stabilized between the two baffles 42.

A feeding port 32 for a PCB to enter is formed in the bottom of the placing frame 3, accommodating grooves 33 are formed in the inner wall of the placing frame 3 and at intervals along the circumferential direction at a position close to the feeding port 32, a material blocking rod 34 is arranged in each accommodating groove 33 of the placing frame 3, one end of each material blocking rod 34 is hinged to one side, close to the bottom of the placing frame 3, of each accommodating groove 33, the other end of each material blocking rod 34 extends out of the corresponding accommodating groove 33, and the part, located in each accommodating groove 33, of each material blocking rod 34 abuts against one side, close to the bottom of the placing frame 3, of each accommodating groove 33; when the PCB enters the placing rack 3 from the feeding port 32 from bottom to top, the material blocking rod 34 is transferred into the accommodating groove 33; after the PCB completely enters the placing frame 3, the material blocking rod 34 rotates out of the accommodating groove 33 again, the PCB abuts against the part, extending out of the accommodating groove 33, of the material blocking rod 34, and the PCB collection completed in detection is achieved.

PCB detection device is including collecting the subassembly, collect the subassembly and include kicking plate 44 and fourth drive 45, in the vice conveyer belt 41 and be located and collect all set up a fourth drive 45 in the position under position 421 and the normal position 422 of collecting, fourth drive 45 is the cylinder, fourth drive 45 fixed mounting is in the support body of vice conveyer belt 41, the piston rod of fourth drive 45 up and stretch out and draw back towards vertical direction, a kicking plate 44 is all fixed mounting to the piston rod of every fourth drive 45, kicking plate 44 is located and is collected the pan feeding mouth 32 of rack 3 of position 422 department unusually 421 or normally under, when the PCB board that finishes detecting is carried to between kicking plate 44 and the pan feeding mouth 32 position, can be directly through starting fourth drive 45 with the PCB board top go into in the corresponding rack 3.

One baffle 42 corresponds unusual collection position 421 and collects position 422 department and all sets up the slip-in mouth 423 that supplies rack 3 to get into with normally, another baffle 42 corresponds unusual collection position 421 and collects position 422 department and all sets up the roll-off mouth 424 that supplies rack 3 to leave with normally, slip-in mouth 423 and roll-off mouth 424 all communicate in the spacing track 43 that corresponds, thereby can take out from roll-off mouth 424 with the rack 3 that finishes filling with the detection PCB board, and join empty rack 3 from roll-off mouth 423.

Referring to fig. 5 and 6, a discharge position 212 is defined as a position of the turntable 21 at which the empty rack 3 is to be removed, a rodless cylinder 13 is fixedly mounted at a position of one side of the main conveyor belt 11 of the rack 1, the rodless cylinder 13 extends in the conveying direction of the main conveyor belt 11, the rodless cylinder 13 extends horizontally into the connecting rack 4 from the feeding end of the main conveyor belt 11, and the abnormal collection position 421 and the normal collection position 422 are both opposite to the rodless cylinder 13; the frame 1 is located rodless cylinder 13 and is equipped with the storage frame 14 near the end of main conveyer belt 11 feed, and opening 141 is erected directly over the storage frame 14 to the storage frame 14 top, has erect and has moved material track 5 directly over the storage frame 14, moves material track 5 and extends to directly over the storage frame 14 directly over the self-discharging material position 212, moves material track 5 and installs sliding block 51 towards length direction gliding, moves material track 5 and is equipped with fifth driving piece 52, and fifth driving piece 52 is the motor screw rod driving medium.

The sliding block 51 is provided with a sixth driving piece 53, the sixth driving piece 53 is an air cylinder, a piston rod of the sixth driving piece 53 faces downwards vertically, a connecting plate 54 is fixedly installed on the piston rod of the sixth driving piece 53, and a hook 55 is fixedly installed on one side, facing downwards, of the connecting plate 54; the top of each rack 3 is fixedly provided with a hanging ring 35, when the empty rack 3 moves into the discharging position 212 through the turntable 21, the hook 55 is buckled into the hanging ring 35, and the empty rack 3 located at the discharging position 212 can be placed into the storage rack 14 for storage through the cooperation of the fifth driving element 52 and the sixth driving element 53.

Referring to fig. 6, the bottom of the storage rack 14 is provided with an opening 141, a plurality of placing racks 3 in the storage rack 14 are stacked in the vertical direction, and the size of the opening 141 is consistent with that of the placing rack 3; the storage rack 14 is provided with a feeding assembly, the feeding assembly comprises a pair of moving blocks 142 and a pair of inserting blocks 143, the two moving blocks 142 are respectively installed on two opposite sides in the storage rack 14 in a sliding manner towards the vertical direction and are close to the opening 141, and the storage rack 14 is provided with a motor lead screw transmission machine for driving the moving blocks 142 to slide; each moving block 142 is provided with an inserting block 143, the inserting block 143 is horizontally and slidably mounted on the moving block 142, each moving block 142 is provided with an inserting cylinder 144 for driving the inserting block 143 to slide, two sides of each storage rack 3 are provided with inserting grooves 36 for inserting the inserting block 143, and the inserting block 143 is inserted into the inserting groove 36 in the storage rack 3 at the bottommost part in the storage rack 14; therefore, when the slide block of the rodless cylinder 13 moves to the opening 141, the slide block vertically slides downwards through the moving block 142 until the placing frame 3 positioned at the bottommost part in the storage frame 14 is placed on the slide block of the rodless cylinder 13, and the empty placing frame 3 is fed.

Referring to fig. 3, the connecting frame 4 is located at one side provided with the rodless cylinder 13, a seventh driving member 46 is arranged at a position corresponding to each slide inlet 423, the seventh driving member 46 is a cylinder, the seventh driving member 46 is fixedly installed on the connecting frame 4, and the rodless cylinder 13 is located at a position between the slide inlet 423 and a piston rod of the seventh driving member 46, so that after the empty placing frame 3 moves to the corresponding slide inlet 423 along with the rodless cylinder 13, the placing frame 3 can be pushed into the corresponding abnormal collecting position 421 or the normal collecting position 422 through the seventh driving member 46.

The implementation principle of the PCB detection device in the embodiment of the application is as follows: a worker only needs to place the placing frame 3 filled with the PCB to be detected in the placing groove 211, and then starts the first driving piece 22 to drive the rotating disc 21 to rotate until the placing frame 3 filled with the PCB to be detected rotates to a position close to the main conveying belt 11; then the PCB at the top in the placing frame 3 is sent to the feeding end of the main conveying belt 11 through the suction nozzle 25, the PCB is sent into the detection body 12 through the main conveying belt 11 for detection, then the PCB is sent into the auxiliary conveying belt 41, the detected PCB is conveyed to the abnormal collection position 421 or the normal collection position 422 according to the detection result, finally the fourth driving part 45 is started, and the PCB is pushed into the collection frame positioned at the abnormal collection position 421 or the normal collection position 422 to be collected.

After the placing rack 3 located near the main conveyor belt 11 is empty, the first driving member 22 is started to drive the rotary table 21 to rotate, so that the empty placing rack 3 moves to the discharging position 212, the hook 55 is buckled into the hanging ring 35, and the empty placing rack 3 is stacked into the storage rack 14 through the cooperation of the fifth driving member 52 and the sixth driving member 53.

After the placing frame 3 located at the abnormal collecting position 421 or the normal collecting position 422 is filled with the detected PCB, the feeding assembly is started to enable an empty placing frame 3 at the bottommost position in the storage rack 14 to be placed on the sliding block of the rodless cylinder 13, then the rodless cylinder 13 is started, the empty placing frame 3 is conveyed to the position corresponding to the abnormal collecting position 421 or the normal collecting position 422, finally the seventh driving member 46 is started to slide the empty placing frame 3 from the slide-in opening 423, meanwhile, the placing frame 3 filled with the detected PCB is pushed to slide out from the slide-out opening 424, and the placing frame 3 at the abnormal collecting position 421 or the normal collecting position 422 is replaced.

The embodiment of the application also discloses a PCB detection method, which specifically includes the following steps with reference to fig. 7:

s10: and when acquiring the information of the trigger detection starting instruction, acquiring the label information of the placing rack close to the feeding end of the main conveying belt.

Specifically, after a placing frame provided with the PCB to be detected is placed in a placing groove, a worker firstly inputs a label of the placing frame into a database, then triggers a detection starting instruction, conveys the placing frame to a position close to a feeding end of a main conveying belt, and then sequentially places the PCB to be detected in the placing frame into the main conveying belt for detection, so that the information of the triggering detection starting instruction is obtained; then, the corresponding label of the rack at the feeding end of the conveyor belt can be obtained by inputting the label into the database in advance.

S20: and acquiring the quantity information of the PCBs to be detected in the placing rack according to the label information of the placing rack, and triggering the placing rack to collect the command when the quantity of the PCBs to be detected is reduced to 0.

Specifically, according to the label of the corresponding placing rack, the weight of the PCB placed in the placing rack is measured in real time from the weight sensor at the bottom of the corresponding placing rack, then the number of the PCBs positioned in the placing rack is calculated according to the weight of a single PCB, so that the number information of the PCBs to be detected in the placing rack is obtained, accurate detection can be performed according to the number of the PCBs of various types and specifications, and the detection efficiency is high; when the number of the PCBs to be detected is detected to be reduced to 0, the fact that the placing frame finishes feeding is indicated, then the placing frame is triggered to collect an instruction, the empty placing frame is taken from the rotary table, and the empty placing frame is transported to the storage frame.

S30: acquiring the quantity information of the abnormal PCBs at the abnormal collecting position and the quantity information of the normal PCBs at the normal collecting position, and triggering a placing rack replacing instruction when the quantity of the abnormal PCBs or the quantity of the normal PCBs reaches a preset threshold value.

In the present embodiment, the predetermined threshold value refers to the number of PCB boards that can be loaded by a single placement board.

The storage rack comprises a rack body, a rack cover and a rack cover, wherein the rack cover is arranged on the rack cover, the rack cover is provided with a material storage rack, the rack cover is arranged on the rack cover, the rack.

In an embodiment, referring to fig. 8, after step S30, the method further includes:

s31: and acquiring the abnormal PCB increasing quantity information and the normal PCB increasing quantity information when the detected PCBs reach the preset quantity according to the abnormal PCB quantity information and the normal PCB quantity information.

In the present embodiment, the predetermined number refers to the total number of PCBs filled with PCBs to be tested by the rack located near the feeding end of the main conveyor.

Specifically, when a placing rack filled with PCBs to be detected is conveyed to a position close to the feeding end of a main conveying belt in a rotating disc, calculation is started, the total number of newly increased PCBs in the abnormal PCBs and the normal PCB data is calculated from the number of the abnormal PCBs and the normal PCB data, and when the total number of newly increased PCBs reaches a preset number, it is stated that detection of all PCBs in one placing rack is completed; then calculating the number of abnormal PCB increases at the abnormal collecting position and the number of normal PCB increases at the normal collecting position; still detect the PCB board quantity in the calculation rack through weight, detection efficiency is high.

S32: and judging whether the abnormal PCB increasing quantity is larger than the normal PCB increasing quantity or not according to the abnormal PCB increasing quantity information and the normal PCB increasing quantity information.

Specifically, after calculating unusual PCB board and increasing quantity and normal PCB board and increasing quantity, increase quantity and the normal PCB board to unusual PCB board and increase quantity and contrast, judge whether unusual PCB board increases quantity and is greater than normal PCB board and increase quantity, judge promptly whether the unusual quantity of PCB board quality in this rack is too much, judge that the mode is direct, efficient.

S33: and if so, forming PCB quality abnormal information by the abnormal PCB increasing quantity information and the normal PCB increasing quantity information and sending the PCB quality abnormal information to the terminal.

Specifically, when judging that the increase quantity of the abnormal PCB is larger than the increase quantity of the normal PCB, the quality of the PCB in the batch of placing frames is not enough, the abnormal PCB increase quantity information and the normal PCB increase quantity information form PCB quality abnormal information and are sent to the terminal, a worker is reminded of processing the batch of PCBs, and the reason of the quality shortage is caused.

In an embodiment, after step S30, the method further includes:

s34: and acquiring the information of the number of the placing racks on which the PCB to be detected is arranged on the turntable, and triggering a placing rack recycling instruction when the number of the placing racks is reduced to 0.

Specifically, the marks of the placing racks in the rotary table are screened out through the marks arranged on each placing rack, and then whether the PCB to be detected exists in the placing racks in the rotary table or not is detected through the weight sensor arranged in each placing rack according to the marks, so that the number of the placing racks is obtained; when detecting that the number of the placing racks in the rotary table is reduced to 0, the placing rack recovery instruction is triggered, all the placing racks in the rotary table are recovered into the storage rack, and the empty placing racks are conveniently used in a centralized manner by workers.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A PCB detection device comprises a rack (1), a main conveying belt (11) installed on the rack (1) and a detection body (12) installed on the rack (1), wherein a feeding hole and a discharging hole of the detection body (12) are both located on a conveying path of the main conveying belt (11), and the PCB detection device is characterized in that an installation frame (2) is installed at a position, close to one end of the feeding hole of the detection body (12), of the main conveying belt (11) of the rack (1), and a rotary table (21) and a first driving piece (22) used for driving the rotary table (21) to rotate are installed in the installation frame (2) in a rotating mode; carousel (21) are provided with along circumference interval and are equipped with rack (3) of waiting to detect the PCB board, mounting bracket (2) are equipped with and are arranged in waiting to detect that the PCB board that is arranged in rack (3) corresponding main conveyer belt (11) feed end department puts into main conveyer belt (11) place the subassembly in proper order.

2. The PCB detection device of claim 1, wherein the placement assembly comprises: the material taking device comprises a material taking rod (23), a mounting plate (24) and a suction nozzle (25), wherein the material taking rod (23) is mounted between a rotary table (21) and a main conveying belt (11), the mounting plate (24) is mounted on the material taking rod (23) in a sliding mode towards the vertical direction, and the suction disc is mounted on the downward side of the mounting plate (24); the placement assembly further comprises: the second driving piece (26) is used for driving the mounting plate (24) to move to a position right above the placing rack (3) provided with the PCB to be detected and the main conveying belt (11), and the third driving piece (27) is used for driving the mounting plate (24) to slide.

3. The PCB detection device according to claim 1, wherein a connecting frame (4) is arranged at a position, close to a discharge port of the detection body (12), of the main conveyor belt (11) of the rack (1), the connecting frame (4) is provided with an auxiliary conveyor belt (41) communicated with the main conveyor belt (11), baffle plates (42) are arranged on two sides, located on the auxiliary conveyor belt (41), of the connecting frame (4), an abnormal collection position (421) and a normal collection position (422) are arranged between the two baffle plates (42) and in the conveying direction of the auxiliary conveyor belt (41) at intervals, and empty placing frames (3) are arranged at positions, located on the abnormal collection position (421) and the normal collection position (422), of the baffle plates (42); the PCB detection device further comprises: and the collecting components are used for respectively adding the PCB which moves to the abnormal collecting position (421) or the normal collecting position (422) to the corresponding placing rack (3).

4. The PCB detecting device according to claim 3, wherein a feeding port (32) for adding a PCB is formed in the bottom of the placing rack (3), an accommodating groove (33) is formed in the inner wall of the placing rack (3) and in the position corresponding to the feeding port (32) along the circumferential direction, a material blocking rod (34) is arranged in the accommodating groove (33), one end of the material blocking rod (34) is hinged in the accommodating groove (33), the other end of the material blocking rod extends out of the accommodating groove (33), and the part, located in the accommodating groove (33), of the material blocking rod (34) abuts against one side, close to the bottom of the placing rack (3), of the accommodating groove (33); the collection assembly includes: the material ejecting plate comprises a material ejecting plate (44) and a fourth driving part (45), the connecting frame (4) is located under the abnormal collecting position (421) and the normal collecting position (422) and is provided with the material ejecting plate (44), and the fourth driving part (45) is used for driving the material ejecting plate (44) to move towards the vertical direction.

5. The PCB detecting device according to claim 4, wherein the position of the turntable (21) on the placing rack (3) for taking off the empty space is a discharging position (212), the rack (1) is provided with a storage rack (14) with an upper opening (141) near the feeding end of the main conveyor belt (11), a material moving track (5) is erected right above the storage rack (14), a sliding block (51) is mounted on the material moving track (5) in a sliding manner, and the material moving track (5) is provided with a fifth driving piece (52) for driving the sliding block (51) to move between the position right above the discharging position (212) and the position right above the storage rack (14); the sliding block (51) is provided with a connecting plate (54) in a sliding manner towards the vertical direction, and the sliding block (51) is provided with a sixth driving piece (53) for driving the connecting plate (54) to slide; one side that connecting plate (54) is down is equipped with couple (55), the top of rack (3) is equipped with link (35) that the adaptation is in couple (55).

6. The PCB detection device according to claim 5, wherein a rodless cylinder (13) is arranged at a position, located on one side of the main conveying belt (11), of the rack (1), the rodless cylinder (13) extends into the connecting frame (4) from the feeding end of the main conveying belt (11) to the conveying direction of the main conveying belt (11), the storage frame (14) is erected at a position, corresponding to the feeding end of the main conveying belt (11), of the rodless cylinder (13), an opening (141) for the storage frame (3) to slide out is formed in the bottom of the storage frame (14), and the storage frame (14) is provided with a feeding assembly for the storage frame (3) to sequentially slide out of the opening (141) and place a sliding block of the rodless cylinder (13).

7. The PCB detection device according to claim 6, wherein a pair of limiting rails (43) for horizontally clamping the placement frame (3) are arranged between the two baffles (42) and corresponding to the abnormal collection position (421) and the normal collection position (422), slide-in ports (423) for the placement frame (3) to enter are formed in the positions, close to the baffles (42) of the rodless cylinder (13), corresponding to the abnormal collection position (421) and the normal collection position (422), respectively, and slide-out ports (424) for the placement frame (3) to leave are formed in the positions, corresponding to the abnormal collection position (421) and the normal collection position (422), of the other baffle (42); the rack (1) is provided with a seventh driving piece (46) which is used for enabling the placing rack (3) of the sliding block positioned on the rodless cylinder (13) to enter between the two baffle plates (42) from the sliding inlet (423).

8. A PCB inspection method based on any of the PCB inspection apparatuses of claims 1 to 7, the method comprising:

when acquiring information of triggering detection starting instructions, acquiring label information of a placing rack close to the feeding end of a main conveying belt;

9. The PCB detection method according to claim 8, wherein after the obtaining of the abnormal PCB quantity information at the abnormal collecting position and the normal PCB quantity information at the normal collecting position and when the abnormal PCB quantity or the normal PCB quantity reaches a predetermined threshold value, a rack replacement instruction is triggered, the method further comprises:

and if so, forming PCB quality abnormal information by the abnormal PCB increasing quantity information and the normal PCB increasing quantity information and sending the PCB quality abnormal information to the terminal.

10. The PCB detection method according to claim 8, wherein after the obtaining of the abnormal PCB quantity information at the abnormal collecting position and the normal PCB quantity information at the normal collecting position and when the abnormal PCB quantity or the normal PCB quantity reaches a predetermined threshold value, a rack replacement instruction is triggered, the method further comprises: