CN113552468A

CN113552468A - Quality detection and use method of PCB

Info

Publication number: CN113552468A
Application number: CN202110801918.6A
Authority: CN
Inventors: 常梁俊
Original assignee: Suzhou Juntai Precision Machinery Co ltd
Current assignee: Suzhou Juntai Precision Machinery Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-10-26
Anticipated expiration: 2041-07-15
Also published as: CN113552468B

Abstract

The invention relates to the technical field of circuit board detection, in particular to a quality detection use method of a PCB, which comprises a rack, wherein a first workbench and a second workbench are arranged on the rack, an electronic screen is arranged inside the rack, an adjusting mechanism for adjusting the position of the electronic screen is arranged at the bottom of the electronic screen, a clamping mechanism for clamping the circuit board is arranged inside the rack, and a pressing mechanism is arranged inside the rack. This quality testing application method of PCB board detects through and the mode that adopts upper and lower pressfitting circular telegram mode to come to light the electronic screen for operating personnel observes more directly perceived, reduces the condition that operating personnel appears omitting to the detection of circuit board, and holistic device carries out automatic control in real time, realizes semi-automatization, thereby makes the accuracy of the whole detection of circuit board improve, and the detection efficiency of circuit board also can improve greatly, and it is big to have reduced operating personnel intensity of labour, detects inaccurate condition.

Description

Quality detection and use method of PCB

Technical Field

The invention relates to the technical field of circuit board detection, in particular to a quality detection using method of a PCB.

Background

Integrated circuit boards are very common in a variety of electronic devices. Because the integrated circuit board mostly punches a hole on a printed circuit board and welds electronic components, the manufactured circuit board is often not 100% qualified, and may have defects such as open circuit, short circuit, etc., therefore, the circuit board needs to be electrified to detect after the circuit board is manufactured, whether the circuit board has the problems such as open circuit, short circuit, etc., and the probability of misusing a bad circuit board can be effectively reduced.

The detection of many circuit boards still relies on the manual work to use the universal meter to detect it at present, detect whether there is the condition of short circuit, this kind is lower relatively to the efficiency of product quality detection, also can improve staff's intensity of labour and the concentrated intensity of spirit, and also there are some automated inspection's equipment to appear now, and also basically through automatic plug-in components, insert on the interface terminal of circuit board, carry out plug-in components and detect, in such a testing process, when the circuit board does not align the back, cause the crushing to the circuit board, cause unnecessary damage, frequent grafting simultaneously, also can cause certain damage to the detection terminal. In view of this, we propose a quality inspection method for PCB.

Disclosure of Invention

The present invention is directed to a method for detecting and using the quality of a PCB, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a quality detection using method of a PCB comprises a rack, wherein a first workbench and a second workbench are arranged on the rack, an electronic screen is arranged inside the rack, an adjusting mechanism for adjusting the position of the electronic screen is arranged at the bottom of the electronic screen, a clamping mechanism for clamping a circuit board is arranged inside the rack, a pressing mechanism is arranged inside the rack, and a control board is fixedly arranged on the rack;

a quality detection using method of a PCB comprises the following steps:

the method comprises the following steps: fixing, namely, manually placing the electronic screen on the adjusting mechanism, and adsorbing and fixing the electronic screen by the mounting plate;

step two: the servo motor rotates to drive the rotating screw rod to rotate, the triangular plate is driven to move, the lifting plate is driven to accurately move back and forth, and the mounting plate is accurately moved to the position for detecting press fit;

step three: the method comprises the following steps that once shooting is carried out, two CCD cameras below an electronic screen can carry out center-dividing shooting positioning on the position of the electronic screen so as to input position coordinate information of the electronic screen into a system;

step four: mounting, wherein an operator places the circuit board on the two clamping plates from the position of the second workbench, and the two cylinders move to clamp and fix the circuit board;

step five: the moving module controls the clamping mechanism and the circuit board fixed on the clamping mechanism to move to the positions below the two CCD cameras;

step six: the two CCD cameras shoot the position of the circuit board, and the shot position image is also transmitted to the control board;

step seven: analyzing and calculating, wherein the system control board analyzes and calculates the relative position of the electronic screen and the circuit board, and transmits the accurate coordinate position of the detection pressing to the mobile module again after analysis;

step eight: the circuit board is accurately transferred to a position to be detected by the operation of the moving module and the linear motor;

step nine: during press detection, the control board sends a signal to the lower pressing cylinder, and the movement of the lower pressing cylinder controls the upper pressing seat to move downwards so as to drive the upper pressing plate to slightly press the circuit board on the electronic screen;

when the electronic screen is lightened, the product is good;

when the electronic screen is not bright, the circuit board may have problems;

step ten: reset, after detecting the completion, the removal module can be with circuit board original route send back, and operating personnel takes away, classifies the product.

Preferably, the aligning gear is including first motor, the output fixedly connected with drive wheel of first motor, the surface of drive wheel is passed through the belt and is connected with the surperficial transmission of drive wheel, the inside fixedly connected with frame plate of frame, two loading boards of fixedly connected with on the frame plate, the inside fixedly connected with lead screw of drive wheel, the surface rotation of lead screw is connected on the frame plate, be provided with sliding support on the lead screw, be provided with the CCD camera on the sliding support, fixedly connected with sliding sleeve one on the sliding support, fixed mounting has slide rail one on the loading board, sliding sleeve one and slide rail sliding connection, the spacer has been cup jointed to the surperficial intermediate position of lead screw.

Preferably, the number of the calibration mechanisms is two, and the two calibration mechanisms are respectively arranged on the two bearing plates.

Preferably, the number of the sliding supports is two, the two sliding supports are in threaded connection with the screw rod, one half of threads on the surface of the screw rod are left-handed threads, and the other half of threads are right-handed threads.

Preferably, the pressing mechanism comprises a pressing cylinder, a flat plate is fixedly connected to the pressing cylinder, a fixing seat is fixedly connected to the bottom of the flat plate, the flat plate is fixedly connected to the frame, an upper pressing seat is fixedly connected to the output end of the pressing cylinder, an upper pressing plate is fixedly connected to the bottom of the upper pressing seat, a fixing seat is fixedly connected to the lower portion of the upper pressing seat and located inside the frame, and a lower pressing plate is fixedly connected to the fixing seat.

Preferably, the upper pressure seat is fixedly connected with a sliding sleeve, the guide rail plate is fixedly connected with a limiting slide rail, and the sliding sleeve is connected with the limiting slide rail in a sliding manner.

Preferably, guiding mechanism is including servo motor, servo motor's output fixedly connected with rotates the lead screw, the terminal surface that rotates the lead screw rotates and is connected with and rotates the seat, the bottom fixedly connected with connecting plate of rotating the seat, fixedly connected with set-square on the connecting plate, sliding connection has sliding sleeve two on the set-square, there is the extension board through bolted connection on the sliding sleeve two, fixedly connected with lifter plate on the extension board, the top fixedly connected with mounting panel of lifter plate, there is the cross slab through bolted connection on the set-square, cross slab bottom fixedly connected with thread block, thread block and the surface threaded connection who rotates the lead screw, fixed mounting has slide rail two on the connecting plate, slide rail two's surface is through sliding sleeve three and set-square sliding connection.

Preferably, four sliding rods are arranged at the bottom of the lifting plate, guide sleeves are connected to the surfaces of the sliding rods in a sliding mode, and the guide sleeves are fixedly connected to the connecting plate.

Preferably, the clamping mechanism is including the backup pad, be provided with the diaphragm in the backup pad, fixedly connected with riser on the diaphragm, there is cylinder one through bolted connection on the riser, output fixedly connected with cylinder two of cylinder one, the output fixedly connected with clamp splice of cylinder one, fixedly connected with splint on the riser, splint are located the below of clamp splice, fixed mounting has linear electric motor in the backup pad, linear electric motor's output and diaphragm fixed connection, the below of backup pad is provided with the removal module, the inside in the frame is fixed to the removal module.

Preferably, a first display screen and a second display screen are arranged inside the rack.

Compared with the prior art, the invention has the beneficial effects that:

this PCB's quality testing application method, adjust the detection position of electronic screen through guiding mechanism, and the alignment mechanism comes to carry out automatic control in real time to the position of the indiscriminate detection of counter point, realize semi-automatization, thereby make the accuracy of the whole detection of circuit board improve, and the detection efficiency of circuit board also can improve greatly, it is big to have reduced operating personnel intensity of labour, detect the unsafe condition, and the mode that adopts upper and lower pressfitting circular telegram mode to come to light the electronic screen detects, make operating personnel observe more directly perceived, it is more obvious to show, reduce the condition that operating personnel missed the detection of circuit board appears.

Drawings

FIG. 1 is a schematic front view of the overall structure of the present invention;

FIG. 2 is a rear view of the overall structure of the present invention;

FIG. 3 is a schematic view of the overall internal structure of the present invention;

FIG. 4 is a schematic view of an electronic screen connection structure according to the present invention;

FIG. 5 is a schematic view of a calibration mechanism in the present invention;

FIG. 6 is a schematic front view of a pressing mechanism according to the present invention;

FIG. 7 is a schematic view of the backside of the pressing mechanism of the present invention;

FIG. 8 is a schematic view of an adjustment mechanism according to the present invention;

FIG. 9 is a partial schematic view of an adjustment mechanism according to the present invention;

FIG. 10 is a schematic view of a clamping mechanism of the present invention.

In the figure: 1. a frame; 2. a first table; 3. a second table; 4. an electronic screen; 5. a control panel; 6. a calibration mechanism; 601. a first motor; 602. a drive wheel; 603. a driving wheel; 604. a screw rod; 605. a sliding support; 606. a first sliding sleeve; 607. a CCD camera; 608. a spacer sleeve; 609. a first slide rail; 7. a pressing mechanism; 71. pressing down the air cylinder; 72. a flat plate; 73. a fixed seat; 74. a lower pressing plate; 75. an upper pressure plate; 76. a limiting slide rail; 77. a sliding sleeve; 78. an upper pressing seat; 79. a guide rail plate; 8. an adjustment mechanism; 801. a servo motor; 802. rotating the screw rod; 803. a rotating seat; 804. a slide bar; 805. a guide sleeve; 806. a second slide rail; 807. a set square; 808. a second sliding sleeve; 809. a support plate; 810. a thread block; 811. a transverse connection plate; 812. a third sliding sleeve; 813. a connecting plate; 814. a lifting plate; 815. mounting a plate; 9. a clamping mechanism; 91. a linear motor; 92. a transverse plate; 93. a first cylinder; 94. a second air cylinder; 95. a clamping block; 96. a splint; 97. a vertical plate; 98. a support plate; 99. a moving module; 10. a frame plate; 11. a first display screen; 12. a second display screen; 13. a carrier plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to fig. 10, a technical solution provided by the present invention is:

a quality detection using method of a PCB comprises a rack 1, a first workbench 2 and a second workbench 3 on the rack 1, wherein an electronic screen 4 is arranged inside the rack 1, an adjusting mechanism 8 for adjusting the position of the electronic screen 4 is arranged at the bottom of the electronic screen 4, a clamping mechanism 9 for clamping a circuit board is arranged inside the rack 1, a pressing mechanism 7 is arranged inside the rack 1, and a control board 5 is fixedly arranged on the rack 1;

a quality detection using method of a PCB comprises the following steps:

the method comprises the following steps: fixing, namely, firstly, manually placing the electronic screen 4 on the adjusting mechanism 8, and adsorbing and fixing the electronic screen 4 by the mounting plate 815;

step two: the servo motor 801 rotates to drive the rotation screw rod 802 to rotate, the triangular plate 807 is driven to move, the lifting plate 814 is driven to move forwards and backwards accurately, and the mounting plate 815 is moved to the position for detecting press fit accurately;

step three: the position of the electronic screen 4 is shot and positioned in a centralized way by two CCD cameras below the electronic screen 4 in one-time shooting, so that the position coordinate information of the electronic screen 4 is input into the system;

step four: mounting, wherein an operator places the circuit board on the two clamping plates 96 from the position of the second workbench 3, and the two cylinders move to clamp and fix the circuit board;

step five: the moving module 99 will control the clamping mechanism 9 and the circuit board fixed thereon to move to the lower part of the two CCD cameras 607;

step six: the two CCD cameras 607 shoot the position of the circuit board, and the shot position image is also transmitted to the control panel 5;

step seven: analyzing and calculating, namely analyzing and calculating the relative position of the electronic screen 4 and the circuit board by the system control board 5, and transmitting the accurate coordinate position of the detection pressing to the moving module 99 again after analysis;

step eight: the precise displacement, namely the operation of the moving module 99 and the linear motor 91 to precisely transfer the circuit board to a position to be detected;

step nine: during the pressing detection, the control board 5 sends a signal to the lower pressing cylinder 71, and the movement of the lower pressing cylinder 71 controls the upper pressing base 78 to move downwards so as to drive the upper pressing board 75 to slightly press the circuit board on the electronic screen 4;

when the electronic screen 4 is bright, the product is good;

when the electronic screen 4 is not bright, it represents that the circuit board may have a problem;

step ten: reset, when detecting the completion back, remove module 99 will send back the circuit board original route, and operating personnel takes away, classifies the product.

In this embodiment, the calibration mechanism 6 includes a first motor 601, an output end of the first motor 601 is fixedly connected with a driving wheel 602, a surface of the driving wheel 602 is in transmission connection with a surface of a transmission wheel 603 through a belt, an internal portion of the frame 1 is fixedly connected with a frame plate 10, two bearing plates 13 are fixedly connected to the frame plate 10, an internal portion of the transmission wheel 603 is fixedly connected with a lead screw 604, a surface of the lead screw 604 is rotatably connected to the frame plate 10, a sliding support 605 is disposed on the lead screw 604, a CCD camera 607 is disposed on the sliding support 605, a sliding sleeve 606 is fixedly connected to the sliding support 605, a sliding rail 609 is fixedly disposed on the bearing plate 13, the sliding sleeve 606 is slidably connected to the sliding rail 609, a spacer 608 is sleeved on a surface middle position of the lead screw 604, rotation of the first motor 601 will control rotation of the lead screw 604 through transmission of a belt pulley, and directly drive relative movement of the two sliding supports 605 through a threaded connection manner, thereby enabling the position of the CCD camera 607 to be flexibly centered for position calibration.

Furthermore, the number of the calibration mechanisms 6 is two, the two calibration mechanisms 6 are respectively arranged on the two bearing plates 13, the two calibration mechanisms 6 are used for respectively controlling electronic calibration and circuit board position calibration, and the detection positions are controlled by confirming the relative positions of the two calibration mechanisms 6, so that the detection positions of the circuit board and the electronic screen 4 can be well overlapped.

Furthermore, the number of the sliding supports 605 is two, the two sliding supports 605 are in threaded connection with the screw rod 604, a half thread on the surface of the screw rod 604 is a left-handed thread, the two motors are in rotation to control the rotation of the two screw rods 604 respectively, and through the threaded connection mode, the two groups of sliding supports 605 are driven to move, a half thread is a right-handed thread, a half left-handed thread and a half right-handed thread are arranged on the two screw rods 604, so that the two sliding seats on the screw rods can move relatively, centering alignment and shooting are performed by the aid of the two sliding seats, the whole shooting range is enlarged, and flexibility is improved.

In addition, pressing mechanism 7 is including pushing down cylinder 71, fixedly connected with is dull and stereotyped 72 on pushing down cylinder 71, the bottom fixedly connected with fixing base 73 of dull and stereotyped 72, dull and stereotyped 72 fixed connection is in frame 1, push down cylinder 71's output fixedly connected with pushes down seat 78, the bottom fixedly connected with top board 75 of seat 78 is pushed up, the inside of frame 1 is located the below fixedly connected with fixing base 73 of seat 78 of pushing down, fixedly connected with holding down plate 74 on the fixing base 73, push down cylinder 71 pushes down and drives top board 75 and push down, pass through the electrical contact on electronic screen 4 with the slow pressfitting of circuit board, and receive the whole pressfitting of top board 75, make the contact point position of circuit board and electronic screen 4, carry out inseparable laminating, the not hard up condition can not appear, keep accuracy and stability in the testing process.

In addition, go up fixedly connected with sliding sleeve 77 on the pressure seat 78, fixedly connected with spacing slide rail 76 on the guide rail plate 79, sliding sleeve 77 and spacing slide rail 76 sliding connection can carry out further injecing to the transport position of pushing down cylinder 71 through the spacing slide rail 76 that sets up, drive holding down plate 74 and will vertical pressfitting downwards, the dislocation can not appear and press askew condition.

It should be noted that the adjusting mechanism 8 includes a servo motor 801, an output end of the servo motor 801 is fixedly connected with a rotating screw rod 802, an end face of the rotating screw rod 802 is rotatably connected with a rotating seat 803, a connecting plate 813 is fixedly connected to a bottom of the rotating seat 803, a triangular plate 807 is fixedly connected to the connecting plate 813, a second sliding sleeve 808 is slidably connected to the triangular plate 807, a support plate 809 is connected to the second sliding sleeve 808 through a bolt, a lifting plate 814 is fixedly connected to the support plate 809, a mounting plate 815 is fixedly connected to a top of the lifting plate 814, a cross plate 811 is connected to the triangular plate 807 through a bolt, a threaded block 810 is fixedly connected to a bottom of the cross plate 811, the threaded block 810 is in threaded connection with a surface of the rotating screw rod 813, a second sliding rail 806 is fixedly mounted on the connecting plate, a surface of the second sliding rail 806 is slidably connected to the triangular plate 807 through a third sliding sleeve 812, the threaded connection drives the cross plate 811 and the triangular plate 807 to move back and forth through the triangular plate 807, and the removal of set-square 807 will drive lifter plate 814 and carry out accurate removal from beginning to end to the mounting panel 815 accurate removal to detect the position of pressfitting on, thereby carry out height and front and back position to electronic screen 4 and carry out the high precision and adjust, adapt to the operating personnel of different height types and use, make operating personnel's visual angle can be more clear see the position that the pressfitting detected, make detect more accurate.

It is worth to be noted that four sliding rods 804 are arranged at the bottom of the lifting plate 814, guide sleeves 805 are slidably connected to the surfaces of the sliding rods 804, the guide sleeves 805 are fixedly connected to the connecting plate 813, and the position of the lifting plate 814 is limited by the four sliding rods 804, so that the lifting plate 814 can move back and forth and can adjust the height at the same time, and the same-direction movement and the two-way adjustment are realized.

In addition, the clamping mechanism 9 comprises a supporting plate 98, a transverse plate 92 is arranged on the supporting plate 98, a vertical plate 97 is fixedly connected to the transverse plate 92, a first air cylinder 93 is connected to the vertical plate 97 through a bolt, a second air cylinder 94 is fixedly connected to the output end of the first air cylinder 93, a clamping block 95 is fixedly connected to the output end of the first air cylinder 93, a clamping plate 96 is fixedly connected to the vertical plate 97, the clamping plate 96 is positioned below the clamping block 95, a linear motor 91 is fixedly installed on the supporting plate 98, the output end of the linear motor 91 is fixedly connected to the transverse plate 92, a moving module 99 is arranged below the supporting plate 98, the moving module 99 is fixed in the frame 1, and the circuit board is integrally and rapidly and fixedly pressed through the telescopic motion of the two air cylinders, so that the situation that the circuit board is displaced and dislocated during the pressing in the detection process is avoided, the detection stability of the whole circuit board is further improved, and the linear motor 91 will operate, direct drive diaphragm 92 rises or descends, the subassembly that whole fixed circuit board will be driven in the rise of diaphragm 92 rises or descends, adjust the height that circuit board pressfitting detected, make equipment when the circuit board of reply different thickness detects, use that all can be nimble, removal module 99 drive connecting plate 813 back-and-forth movement, and removal module 99 can be hinge class transmission assembly, it can to remove through electronic components and parts drive connecting plate 813, can carry out the front and back flexible of position to whole clamping mechanism 9 through the effect of removal module 99, provide great space, make operating personnel be convenient for lay the circuit board.

In addition, the inside of frame 1 is provided with display screen 11 and display screen two 12, and display screen 11 and display screen two 12 can be fine give the operation of two stations and show for operating personnel is more smooth and easy to the operation and the use of equipment.

When the quality detection using method of the PCB is used, firstly, the electronic screen 4 is manually placed on the adjusting mechanism 8, the electronic screen 4 is a detection tool which is similar to a mobile phone screen, when the circuit board is electrified and the internal circuit is a path, the electronic screen 4 can automatically light up, so as to directly confirm the quality problem of the circuit board, when the electronic screen 4 is adsorbed and fixed through the adsorption hole arranged on the adjusting mechanism 8, the rotation of the servo motor 801 drives the rotation of the rotation screw rod 802 by controlling the rotation of the servo motor 801, after the rotation screw rod 802 rotates, the transverse connecting plate 811 and the triangular plate connected above are driven to move back and forth by a threaded connection mode, and the movement of the triangular plate 807 drives the lifting plate 814 to accurately move back and forth, so as to accurately move the mounting plate 815 to the position of detection pressing, the triangular plate 807 moves back and forth and moves up and down to control the height position of the lifting plate 814 due to the limitation of the four sliding rods 804, so that the height position of the electronic screen 4 can be accurately adjusted and integrally regulated, operators with different heights can conveniently work, the use of the whole equipment is not limited, the electronic screen 4 can be conveniently placed, a camera below the electronic screen 4 can shoot the position of the electronic screen 4 to input the position into a system, and the system of the control panel 5 can receive the operation, at the moment, the circuit board can be placed on the two clamping plates 96 by the operators from the position of the second workbench 3, after the circuit board is tiled, the clamping blocks 95 are moved above the circuit board by the contraction of the second air cylinder 94, and then the whole second air cylinder 94 and the clamping blocks 95 are directly controlled to be pressed down by the contraction of the first air cylinder 93 to compress the circuit board, and the clamp block 95 is provided with three rubber chucks, when contacting with the circuit board, the clamp block has certain buffering and protecting effects, after clamping, the moving module 99 can control the movement of the clamping mechanism 9, the moving module 99 can be a hinge type transmission component, the whole clamping mechanism 9 can be driven by an electric component to move back and forth, when the clamp block moves to another two CCD cameras 607 to shoot the position of the circuit board, the shot position image can be transmitted to the control panel 5, the relative position of the electronic screen 4 and the circuit board is calculated by the control panel 5 to control the operation of the moving module 99 and the linear motor 91 to accurately transfer the circuit board to the position to be detected, the control panel 5 can send a signal to the lower pressure cylinder 71, the lower pressure cylinder 71 moves to control the upper pressure base 78 to move down to drive the upper pressure plate 75 to slightly press the circuit board, make the electric contact position of circuit board and electronic screen 4, carry out in close contact with, after the circuit board contacts with electronic screen 4, will the circular telegram detects the circuit board, after electronic screen 4 lights, it is good to represent this circuit board, when electronic screen 4 does not light, represent this circuit board probably has a problem, it carries out effectual differentiation and detection to the circuit board to be convenient for measurement personnel, and whole device has adopted the mode of semi-automatic words, improve detection efficiency and the accuracy to the circuit board, and after the pressfitting, pressing mechanism 7 and fixture 9 reset, come the normal position of sending back the circuit board, it sorts to take to be convenient for operating personnel.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A quality detection use method of a PCB comprises a frame (1), and is characterized in that: a first workbench (2) and a second workbench (3) are arranged on the rack (1), an electronic screen (4) is arranged inside the rack (1), an adjusting mechanism (8) for adjusting the position of the electronic screen (4) is arranged at the bottom of the electronic screen (4), a clamping mechanism (9) for clamping a circuit board is arranged inside the rack (1), a pressing mechanism (7) is arranged inside the rack (1), and a control board (5) is fixedly arranged on the rack (1);

a quality detection using method of a PCB comprises the following steps:

the method comprises the following steps: fixing, namely, firstly, manually placing the electronic screen (4) on the adjusting mechanism (8), and adsorbing and fixing the electronic screen (4) by the mounting plate (815);

step two: the servo motor (801) rotates to drive the rotating screw rod (802) to rotate, the triangular plate (807) is driven to move, the lifting plate (814) is driven to move forwards and backwards accurately, and the mounting plate (815) is moved to the position for detecting pressing accurately;

step three: the method comprises the following steps that once shooting is carried out, two CCD cameras below an electronic screen (4) can carry out center-dividing shooting positioning on the position of the electronic screen (4), and position coordinate information of the electronic screen (4) is input into a system;

step four: mounting, wherein an operator places the circuit board on the two clamping plates (96) from the position of the second workbench (3), and the two cylinders move to clamp and fix the circuit board;

step five: the moving module (99) controls the clamping mechanism (9) and the circuit board fixed on the clamping mechanism to move to the position below the two CCD cameras (607);

step six: the two CCD cameras (607) shoot the position of the circuit board, and the shot position image is also transmitted to the control panel (5);

step seven: analyzing and calculating, wherein the system control board (5) analyzes and calculates the relative position of the electronic screen (4) and the circuit board, and transmits the accurate coordinate position of the detected pressing to the moving module 99 again after analysis;

step eight: the circuit board is accurately transferred to a position to be detected by the operation of the moving module (99) and the linear motor (91);

step nine: the pressing detection is carried out, the control panel (5) sends a signal to the lower pressing cylinder (71), the movement of the lower pressing cylinder (71) controls the upper pressing seat (78) to move downwards so as to drive the upper pressing plate (75) to slightly press the circuit board on the electronic screen (4);

when the electronic screen (4) is bright, the product is good;

when the electronic screen (4) is not bright, the circuit board is represented to be possibly problematic;

step ten: resetting, when the detection is completed, the mobile module (99) can send the circuit board back, and an operator can take the circuit board back to classify the products.

2. The PCB quality detection use method of claim 1, wherein: the calibration mechanism (6) comprises a first motor (601), the output end of the first motor (601) is fixedly connected with a driving wheel (602), the surface of the driving wheel (602) is in transmission connection with the surface of a driving wheel (603) through a belt, a frame plate (10) is fixedly connected inside the frame (1), two bearing plates (13) are fixedly connected to the frame plate (10), a lead screw (604) is fixedly connected inside the driving wheel (603), the surface of the lead screw (604) is rotatably connected to the frame plate (10), a sliding support (605) is arranged on the lead screw (604), a CCD camera (607) is arranged on the sliding support (605), a first sliding sleeve (606) is fixedly connected to the sliding support (605), a first sliding rail (609) is fixedly mounted on the bearing plate (13), and the first sliding sleeve (606) is in sliding connection with the first sliding rail (609), a spacer bush (608) is sleeved at the middle position of the surface of the screw rod (604).

3. The PCB quality detection use method of claim 2, wherein: the number of the calibration mechanisms (6) is two, and the two calibration mechanisms (6) are respectively arranged on the two bearing plates (13).

4. The PCB quality detection use method of claim 2, wherein: the number of the sliding supports (605) is two, the two sliding supports (605) are in threaded connection with the screw rod (604), and one half of threads on the surface of the screw rod (604) are left-handed threads and the other half of threads are right-handed threads.

5. The PCB quality detection use method of claim 1, wherein: pressing mechanism (7) are including pushing down cylinder (71), fixedly connected with is dull and stereotyped (72) on pushing down cylinder (71), bottom fixedly connected with fixing base (73) of dull and stereotyped (72), dull and stereotyped (72) fixed connection is on frame (1), the output fixedly connected with who pushes down cylinder (71) pushes up seat (78), the bottom fixedly connected with top board (75) of seat (78) on pushing up, the inside of frame (1) is located below fixedly connected with fixing base (73) of seat (78) on pushing down, fixedly connected with holding down plate (74) on fixing base (73).

6. The PCB quality detection use method of claim 5, wherein: go up fixedly connected with sliding sleeve (77) on pressure seat (78), fixedly connected with spacing slide rail (76) on guide rail plate (79), sliding sleeve (77) and spacing slide rail (76) sliding connection.

7. The PCB quality detection use method of claim 1, wherein: the adjusting mechanism (8) comprises a servo motor (801), an output end of the servo motor (801) is fixedly connected with a rotating lead screw (802), the end face of the rotating lead screw (802) is rotatably connected with a rotating seat (803), the bottom of the rotating seat (803) is fixedly connected with a connecting plate (813), the connecting plate (813) is fixedly connected with a triangular plate (807), the triangular plate (807) is slidably connected with a second sliding sleeve (808), the second sliding sleeve (808) is connected with a support plate (809) through a bolt, the support plate (809) is fixedly connected with a lifting plate (814), the top of the lifting plate (814) is fixedly connected with a mounting plate (815), the triangular plate (807) is connected with a transverse plate (811) through a bolt, the bottom of the transverse plate (811) is fixedly connected with a thread block (810), and the thread block (810) is connected with the surface of the rotating lead screw (802), a second sliding rail (806) is fixedly mounted on the connecting plate (813), and the surface of the second sliding rail (806) is connected with the triangular plate (807) in a sliding mode through a third sliding sleeve (812).

8. The PCB quality detection use method of claim 7, wherein: the bottom of the lifting plate (814) is provided with four sliding rods (804), the surfaces of the sliding rods (804) are connected with guide sleeves (805) in a sliding mode, and the guide sleeves (805) are fixedly connected to the connecting plate (813).

9. The PCB quality detection use method of claim 1, wherein: fixture (9) is including backup pad (98), be provided with diaphragm (92) on backup pad (98), fixedly connected with riser (97) are gone up in diaphragm (92), there is cylinder (93) through bolted connection on riser (97), the output fixedly connected with cylinder two (94) of cylinder (93), the output fixedly connected with clamp splice (95) of cylinder (93), fixedly connected with splint (96) are gone up in riser (97), splint (96) are located the below of clamp splice (95), fixed mounting has linear electric motor (91) on backup pad (98), the output and diaphragm (92) fixed connection of linear electric motor (91), the below of backup pad (98) is provided with removal module (99), the inside in frame (1) is fixed in removal module (99).

10. The PCB quality detection use method of claim 1, wherein: a first display screen (11) and a second display screen (12) are arranged inside the rack (1).