CN210894163U

CN210894163U - A device for PCB board appearance imperfections detects

Info

Publication number: CN210894163U
Application number: CN201921709801.XU
Authority: CN
Inventors: 夏善福
Original assignee: Dongguan Hongyun Electronics Co ltd
Current assignee: Dongguan Hongyun Electronics Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-06-30
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a device for PCB board appearance imperfections detects, including the bottom plate with be located the casing on bottom plate top, the both sides of casing and the top symmetry that is located the bottom plate are equipped with the support, are equipped with the netted conveyer belt that runs through the casing between the adjacent support, and the top of netted conveyer belt is equipped with the PCB board, and the casing is both sides open-ended cavity structure, and one side in the casing and the top that is located netted conveyer belt are equipped with the diaphragm of horizontal setting, and the bottom of diaphragm is equipped with electric telescopic handle. Has the advantages that: the image acquisition mechanism acquires the PCB image and compares the PCB image with a pre-stored design drawing to detect whether the circuit diagram of the PCB is complete or not without errors, determine the flatness and the completeness of the circuit board and screen out the deformed or damaged circuit board; whether the circuit of the PCB is connected or not is detected by the probe, and whether the circuit is broken or not is detected, so that manual detection is replaced, labor force is effectively saved, and the electrical property detection is more convenient and faster.

Description

A device for PCB board appearance imperfections detects

Technical Field

The utility model relates to a check out test set technical field particularly, relates to a device for PCB board appearance imperfections detects.

Background

The PCB is widely used in various industries, is an important electronic component, is a support for electronic components, and plays a key role in various electrical equipment. With the rapid development of printed circuit boards, the quality of the printed wiring becomes an important component of the printed circuit board. Due to the influence of factors such as a printing process, a circuit board transportation environment, and the assembly of electrical components (SMT and DIP) of the circuit board, the printed lines may be broken, and the abnormal open circuit damage may occur, which finally results in the abnormal work of the PCB. The method is characterized in that the method is used for detecting the PCB broken line defects, and the PCB broken line defects are detected by conventional appearance and electrical property detection.

At present, the detection of the PCB needs to manually hold the PCB under a light source, and the PCB is manually visually inspected whether the PCB has defects or not and whether the hole positions are correct or not; or the function detection equipment is adopted to independently detect the internal functions of the PCB, so that the centralized detection cannot be carried out on the inside and the outside of the PCB, and the detection efficiency of the PCB is low.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the problem among the correlation technique, the utility model provides a device for PCB board appearance imperfections detects to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

a device for detecting appearance defects of a PCB (printed circuit board) comprises a bottom plate and a shell positioned at the top end of the bottom plate, wherein supports are symmetrically arranged on two sides of the shell and positioned at the top end of the bottom plate, a net-shaped conveying belt penetrating through the shell is arranged between every two adjacent supports, the PCB is arranged at the top end of the net-shaped conveying belt, the shell is of a cavity structure with two openings at two sides, a transverse plate transversely arranged is arranged on one side in the shell and positioned above the net-shaped conveying belt, an electric telescopic rod is arranged at the bottom end of the transverse plate, a probe matched with the PCB is arranged at the bottom end of the electric telescopic rod, a first lead screw and a second lead screw are symmetrically arranged at the top end in the shell, the first lead screw is connected with the second lead screw through a shaft sleeve, one side of the second lead screw is connected with the output end of a rotating motor positioned on one side of the, the bottom of sliding block one with the sliding block two all is equipped with the movable rod that is cross arrangement, and is two sets of the intersection of movable rod is equipped with the pivot, just the bottom of movable rod is equipped with the backing plate, the bottom of backing plate is equipped with image acquisition mechanism.

Preferably, the image acquisition mechanism is a CCD camera, and the image acquisition mechanism is arranged on one side in the shell and below the mesh conveyor belt.

Preferably, the first sliding block and the second sliding block are horizontally arranged on the first screw rod and the second screw rod at the same distance.

Preferably, the first screw rod and the second screw rod have opposite thread directions, and an internal thread groove matched with the first screw rod and the second screw rod is formed in the first sliding block and the second sliding block.

Preferably, a controller electrically connected with the mesh conveyor belt, the electric telescopic rod, the probe, the rotating motor and the image acquisition mechanism is arranged on one side of the shell.

Preferably, the bottom edge of the bottom plate is provided with a foot seat, and the bottom of the foot seat is provided with a cushion rubber pad.

Preferably, the movable rod is connected with the first sliding block, the second sliding block and the backing plate through rollers.

The utility model has the advantages that: the image acquisition mechanism acquires the PCB image and compares the PCB image with a pre-stored design drawing to detect whether the circuit diagram of the PCB is complete or not without errors, determine the flatness and the completeness of the circuit board and screen out the deformed or damaged circuit board; whether the circuit of the PCB is connected or not is detected by the probe, and whether the circuit is broken or not is detected, so that manual detection is replaced, labor force is effectively saved, and the electrical property detection is more convenient and faster.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an apparatus for detecting appearance defects of a PCB according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of an apparatus for detecting appearance defects of a PCB according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first screw rod in the device for detecting the appearance defects of the PCB according to the embodiment of the present invention.

In the figure:

1. a base plate; 2. a housing; 3. a support; 4. a mesh conveyor belt; 5. a PCB board; 6. a transverse plate; 7. an electric telescopic rod; 8. a probe; 9. a first screw rod; 10. a second screw rod; 11. a shaft sleeve; 12. a rotating electric machine; 13. a first sliding block; 14. a second sliding block; 15. a movable rod; 16. a rotating shaft; 17. a base plate; 18. an image acquisition mechanism; 19. a controller; 20. a foot seat; 21. and (4) rolling shafts.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a device for PCB board appearance imperfections detects.

The first embodiment;

as shown in fig. 1-3, the device for detecting the appearance defects of the PCB board according to the embodiment of the present invention comprises a bottom board 1 and a housing 2 located at the top end of the bottom board 1, wherein two sides of the housing 2 and the top end of the bottom board 1 are symmetrically provided with a support 3, a mesh conveyor belt 4 penetrating through the housing 2 is arranged between the adjacent support 3, the top end of the mesh conveyor belt 4 is provided with a PCB board 5, the housing 2 is a cavity structure with two open sides, a transverse plate 6 is arranged at one side in the housing 2 and above the mesh conveyor belt 4, the bottom end of the transverse plate 6 is provided with an electric telescopic rod 7, the bottom end of the electric telescopic rod 7 is provided with a probe 8 matched with the PCB board 5, the top end in the housing 2 is symmetrically provided with a first lead screw 9 and a second lead screw 10, the first lead screw 9 is connected with the second lead screw 10 through a shaft sleeve, one side of two 10 of lead screws with be located the 12 output ends of the rotating electrical machines on one side of casing 2 are connected, one 9 of lead screws with be equipped with the symmetry on two 10 of lead screws and set up and rather than assorted sliding block 13 and sliding block two 14, sliding block 13 with the bottom of two 14 of sliding blocks all is equipped with the movable rod 15 that is cross arrangement, and is two sets of the crossing of movable rod 15 is equipped with pivot 16, just the bottom of movable rod 15 is equipped with backing plate 17, the bottom of backing plate 17 is equipped with image acquisition mechanism 18.

Example two;

as shown in fig. 1 to 3, the image capturing mechanism 18 is a CCD camera, the image capturing mechanism 18 is disposed on one side of the housing 2 below the mesh conveyor belt 4, the first sliding block 13 and the second sliding block 14 are horizontally disposed on the first screw rod 9 and the second screw rod 10 at the same distance, the first screw rod 9 and the second screw rod 10 have opposite thread directions, and the first sliding block 13 and the second sliding block 14 are internally provided with internal thread grooves matched with the first screw rod 9 and the second screw rod 10. It can be seen from the above design that the first sliding block 13 and the second sliding block 14 are horizontally arranged at the same distance, so that the downward translation of the backing plate 17 can be better controlled.

As shown in fig. 1-3, one side of the casing 2 is provided with a controller 19 electrically connected to the mesh conveyor belt 4, the electric telescopic rod 7, the probe 8, the rotating electrical machine 12 and the image acquisition mechanism 18, the bottom corners of the bottom plate 1 are provided with footstands 20, the bottom ends of the footstands 20 are provided with cushion rubber pads, and the movable rod 15 is connected to the first sliding block 13, the second sliding block 14 and the backing plate 17 through rollers 21. The controller 19 is of the type plcpu 226 and the design of the foot mounts 20 is relatively conventional and will not be described in detail.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

When actual application, a plurality of PCB boards 5 are placed to 4 upper surfaces of mesh conveyor belt, when PCB board 5 carried to the below of probe 8, mesh conveyor belt 4 stopped working, and electric telescopic handle 7 stretches out and draws back and drives probe 8 and move down to make probe 8 detect the internal performance of PCB board 5, image acquisition mechanism 18 carries out image acquisition to the circuit board both sides respectively, compares the image of gathering with the basic pattern in the treater, judges whether PCB board 5 circuit is correct, judges whether PCB board 5 warp.

In summary, with the aid of the technical solution of the present invention, the image acquisition mechanism 18 can detect whether the circuit diagram of the PCB 5 is complete and error-free by acquiring the image of the PCB 5 and comparing the acquired image with the pre-stored design diagram, determine the flatness and integrity of the circuit board, and screen out the deformed or damaged circuit board; whether 5 circuits of PCB board are connected or not is detected by the probe 8, and whether the circuit is broken or not is detected, so that manual detection is replaced, labor force is effectively saved, and electrical property detection is more convenient and faster.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The device for detecting the appearance defects of the PCB is characterized by comprising a bottom plate (1) and a shell (2) positioned at the top end of the bottom plate (1), wherein supports (3) are symmetrically arranged at the two sides of the shell (2) and positioned at the top end of the bottom plate (1), a mesh-shaped conveying belt (4) penetrating through the shell (2) is arranged between every two adjacent supports (3), a PCB (5) is arranged at the top end of the mesh-shaped conveying belt (4), the shell (2) is of a cavity structure with openings at two sides, a transverse plate (6) transversely arranged is arranged at one side in the shell (2) and positioned above the mesh-shaped conveying belt (4), an electric telescopic rod (7) is arranged at the bottom end of the transverse plate (6), probes (8) matched with the PCB (5) are arranged at the bottom end of the electric telescopic rod (7), a first screw rod (9) and a second screw rod (10) are symmetrically arranged at the top end in the shell (2, lead screw one (9) through axle sleeve (11) with two (10) of lead screw are connected, one side of two (10) of lead screw with be located the rotating electrical machines (12) output of casing (2) one side is connected, lead screw one (9) with be equipped with the symmetry on two (10) of lead screw and set up and rather than assorted sliding block one (13) and sliding block two (14), sliding block one (13) with the bottom of sliding block two (14) all is equipped with movable rod (15) that are cross arrangement, and is two sets of the intersection of movable rod (15) is equipped with pivot (16), just the bottom of movable rod (15) is equipped with backing plate (17), the bottom of backing plate (17) is equipped with image acquisition mechanism (18).

2. The apparatus for detecting the appearance defects of the PCB according to claim 1, wherein the image acquisition mechanism (18) is a CCD camera, and the image acquisition mechanism (18) is arranged at one side in the shell (2) and below the mesh conveyor belt (4).

3. The device for detecting the appearance defects of the PCB as recited in claim 1, wherein the first sliding block (13) and the second sliding block (14) are horizontally arranged on the first screw rod (9) and the second screw rod (10) at equal distances.

4. The device for detecting the appearance defects of the PCB as recited in claim 1, wherein the first screw rod (9) and the second screw rod (10) have opposite thread directions, and the first sliding block (13) and the second sliding block (14) are internally provided with internal thread grooves matched with the first screw rod (9) and the second screw rod (10).

5. The apparatus for PCB visual defect detection of claim 1, wherein one side of the housing (2) is provided with a controller (19) electrically connected with the mesh conveyor belt (4), the electric telescopic rod (7), the probe (8), the rotating motor (12) and the image acquisition mechanism (18).

6. The device for detecting the appearance defects of the PCB as claimed in claim 1, wherein the bottom corners of the bottom plate (1) are provided with foot seats (20), and the bottom ends of the foot seats (20) are provided with cushion rubber pads.

7. The apparatus for detecting the appearance defects of the PCB as recited in claim 1, wherein the movable rod (15) is connected with the first sliding block (13) and the second sliding block (14) and the backing plate (17) respectively through rollers (21).