Visual inspection device for appearance defects of PCB (Printed Circuit Board)

Abstract

The utility model discloses a visual inspection device for appearance defects of a PCB (Printed Circuit Board). The visual inspection device comprises an inspection table, an impurity removal assembly and a positioning assembly, according to the visual inspection device for the appearance defects of the PCBs, the PCBs placed on the rotating disc in the inspection table can be subjected to dust blowing at the bottom angles of a plurality of groups of jet heads at the lower end in the dust collection cover and dust collection by a dust collection pipe at the top, and are matched with the rotating disc which slowly rotates the PCBs, so that impurities and dust which are adhered to and remained at the upper ends of the PCBs can be efficiently cleaned; meanwhile, the PCB at the upper end of the movable rotating disc can be bound through the binding plates installed on the two sides of the inner end of the adjusting frame driven by the electric sliding rail, so that the PCB can be positioned and moved to the lower end of the visual detector for detection, and the binding plates on the two sides of the adjusting frame can be used for fixing the PCB at the lower end of the visual detector. And convenient opening and closing adjustment can be carried out through a bidirectional threaded rod in the adjusting frame so as to adapt to PCBs with different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board detection, in particular to a visual detection device for appearance defects of PCB boards. Background Art

[0002] The Chinese name of PCB board is printed circuit board or printed circuit board. It is an important electronic component, a support for electronic components and a carrier for electrical connections. After the PCB board is manufactured, it is necessary to use a visual inspection device to inspect its appearance to avoid defects in its appearance.

[0003] Existing PCB board visual inspection devices, such as the PCB board visual inspection device disclosed in publication number CN217404464U, have the advantages of greatly reducing the cost of visual inspection hardware and corresponding developed software and improving inspection efficiency. However, this PCB board visual inspection device is inconvenient to clean the debris and lint dust stuck or remaining on the upper end of the PCB board before inspection, and the inspection accuracy of the PCB board is easily affected by the presence of debris or lint. Therefore, we propose a visual inspection device for PCB board appearance defects. Utility Model Content

[0004] The main purpose of the utility model is to provide a visual inspection device for PCB board appearance defects, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A visual inspection device for appearance defects of PCB boards comprises an inspection platform, a dust removal component and a positioning component. The inspection platform comprises a visual detector and a control box mounted on its upper end. The dust removal component comprises a rotating disk movably mounted in the inspection platform and a PCB board movably placed on the upper end of the rotating disk. A dust hood is movably mounted on the top of the rotating disk. A dust suction pipe and an external air pipe are fixedly connected to the top and the bottom of the dust hood respectively. A dust collector and a blower are fixedly connected to the top of the dust suction pipe and the external air pipe respectively. The dust collector and the blower are both fixed to the top of the inspection platform.

[0007] Preferably, the impurity removal component also includes an inner ring tube fixedly connected to the outer air pipe at the inner end of the dust hood, and a plurality of groups of nozzles arranged and fixedly installed on the inner side of the inner ring tube.

[0008] Preferably, the impurity removal component also includes an electric push rod fixedly installed on the top of the dust hood, and the top of the electric push rod is fixed on the detection table.

[0009] Preferably, the impurity removal component also includes a reduction motor fixedly mounted on the bottom of the rotating disk, and the bottom of the reduction motor is fixed in the detection platform.

[0010] Preferably, the positioning assembly includes an electric slide rail fixedly installed at the rear end of the detection platform, and an adjustment frame installed at the front end of the electric slide rail.

[0011] Preferably, the positioning assembly also includes a restraining groove opened in the adjusting frame, and a bidirectional threaded rod movably installed in the adjusting frame, and the outer ends of the bidirectional threaded rods on both sides of the restraining groove are also movably installed with sliding sleeves, and the outer ends of the sliding sleeves are also fixedly installed with restraining plates.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the present invention, the PCB placed on the rotating disk in the test table can be cleaned efficiently by the bottom angle dust blowing of multiple groups of nozzles at the lower end of the dust hood and the dust suction of the top dust suction pipe, and the rotating disk that slowly rotates the PCB board can effectively clean the sticky and residual debris and dust on the upper end of the PCB board, thereby avoiding the problem of errors in subsequent visual detector detection due to residual debris;

[0014] 2. In the utility model, the adjustment frame driven by the electric slide rail can also restrain the PCB board on the upper end of the movable rotating disk through the restraining plates installed on both sides of the inner end thereof, so as to be positioned and moved to the lower end of the visual detector for detection, and the restraining plates on both sides of the adjustment frame can also be conveniently opened and closed by the bidirectional threaded rods in the adjustment frame, so as to adapt to the use of PCB boards of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side sectional view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the adjusting frame of the utility model.

[0018] Reference numerals:

[0019] 100. Testing table; 101. Visual detector; 102. Control box;

[0020] 200, impurity removal component; 201, rotating disk; 202, PCB board; 203, dust cover; 204, dust pipe; 205, external air pipe; 206, vacuum cleaner; 207, blower; 208, inner ring pipe; 209, nozzle; 210, electric push rod; 211, reduction motor;

[0021] 300, positioning assembly; 301, electric slide rail; 302, adjustment frame; 303, restraining groove; 304, bidirectional threaded rod; 305, sliding sleeve; 306, restraining plate. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Embodiment 1:

[0024] like Figure 1-2 As shown, the present embodiment provides a visual inspection device for appearance defects of PCB boards, including an inspection platform 100, a dust removal component 200 and a positioning component 300. The inspection platform 100 includes a visual detector 101 and a control box 102 installed on its upper end. The dust removal component 200 includes a rotating disk 201 movably installed in the inspection platform 100, and a PCB board 202 movably placed on the upper end of the rotating disk 201. A dust hood 203 is also movably installed on the top of the rotating disk 201. A dust suction pipe 204 and an external air pipe 205 are fixedly connected to the top and bottom of the dust suction pipe 204 and the external air pipe 205, respectively. A vacuum cleaner 206 and a blower 207 are connected, and both the vacuum cleaner 206 and the blower 207 are fixed on the top of the inspection table 100. The impurity removal component 200 also includes an inner ring tube 208 fixedly connected to the outer air pipe 205 at the inner end of the dust hood 203, and a plurality of groups of nozzles 209 arranged and fixedly installed on the inner side of the inner ring tube 208. The impurity removal component 200 also includes an electric push rod 210 fixedly installed on the top of the dust hood 203, and the top of the electric push rod 210 is fixed on the inspection table 100. The impurity removal component 200 also includes a reduction motor 211 fixedly installed at the bottom of the rotating disk 201, and the bottom of the reduction motor 211 is fixed in the inspection table 100.

[0025] Specifically, the PCB board 202 is an important electronic component, which is the support body of electronic components and the carrier of electrical connection. After the PCB board 202 is manufactured, it is necessary to use a visual inspection device to inspect its appearance to avoid defects in its appearance. The PCB board 202 placed on the rotating disk 201 in this inspection table 100 can be blown at a bottom angle by multiple groups of nozzles 209 at the lower end of the dust hood 203 and vacuumed by the top dust suction pipe 204, and the rotating disk 201 that slowly rotates the PCB board 202 can be used to efficiently and comprehensively clean up the sticky and residual debris and dust on the upper end of the PCB board 202, thereby avoiding the problem of errors in subsequent visual detector 101 detection due to residual debris. At the same time, the dust hood 203 can also avoid the problem of blown debris floating everywhere.

[0026] Embodiment 2:

[0027] Based on the first embodiment, Figure 1-3As shown, the positioning assembly 300 includes an electric slide rail 301 fixedly installed on the rear end of the detection platform 100, and an adjustment frame 302 installed on the front end of the electric slide rail 301. The positioning assembly 300 also includes a restraining groove 303 opened in the adjustment frame 302, and a bidirectional threaded rod 304 movably installed in the adjustment frame 302. The outer ends of the bidirectional threaded rods 304 on both sides of the restraining groove 303 are also movably installed with sliding sleeves 305, and the outer ends of the sliding sleeves 305 are also fixedly installed with restraining plates 306.

[0028] Specifically, the adjustment frame 302 driven by the electric slide rail 301 in the detection platform 100 can also restrain the PCB board 202 on the upper end of the moving rotating disk 201 through the restraining plates 303 installed on both sides of its inner end, so as to be positioned and moved to the lower end of the visual detector 101 for detection, and the restraining plates 306 on both sides of the adjustment frame 302 can also be conveniently opened and closed through the bidirectional threaded rods 304 in the adjustment frame 302, so as to adapt to the use of PCB boards 202 of different sizes.

[0029] The working principle and use process of this utility model:

[0030] When testing the PCB board 202, first place the PCB board 202 on the upper end of the rotating disk 201, and start the electric push rod 210 on the top of the rotating disk 201, so that it drives the dust cover 203 at the bottom to move downward to cover the outer end of the rotating disk 201. At this time, the reduction motor 211 at the bottom of the rotating disk 201 and the dust collector 206 and the blower 207 connected to the outer air pipe 205 and the dust pipe 204 are started at the same time. When the rotating disk 201 slowly rotates with respect to the PCB board 202 at the upper end, the blower 207 blows the air into the nozzle 209 through the outer air pipe 205 and the inner ring pipe 208, and blows the air obliquely to the PCB board 202. 02, so as to blow away the residual and sticky debris and dust on the upper end of the PCB board 202. The debris and dust blown away in the dust hood 203 will be sucked into the interior of the vacuum cleaner 206 by the dust suction pipe 204 on the top. After the upper end of the PCB board 202 is cleaned, the dust hood 203 moves back and the rotating disk 201 stops to the initial position. At this time, the electric slide rail 301 will drive the adjusting frame 302 fixedly installed at the front end to position and move the cleaned PCB board 202 to the lower end of the visual detector 101 through the binding plates 306 on both sides of the inner end of the adjusting frame 302, so as to perform visual inspection of the appearance of the PCB board 202.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A visual inspection device for appearance defects of a PCB board, comprising a detection platform (100), a dust removal component (200) and a positioning component (300), wherein the detection platform (100) comprises a visual detector (101) and a control box (102) mounted on its upper end, characterized in that: The impurity removal component (200) comprises a rotating disk (201) movably installed in the detection platform (100), and a PCB board (202) movably placed on the upper end of the rotating disk (201); a dust hood (203) is also movably installed on the top of the rotating disk (201); a dust suction pipe (204) and an external air pipe (205) are respectively fixedly connected to the top and bottom of the dust suction pipe (204) and the external air pipe (205); a dust collector (206) and a blower (207) are respectively fixedly connected to the top of the dust suction pipe (204) and the top of the external air pipe (205); and the dust collector (206) and the blower (207) are both fixed to the top of the detection platform (100).

2. A visual inspection device for PCB appearance defects according to claim 1, characterized in that: The impurity removal component (200) further comprises an inner ring tube (208) fixedly connected to the outer air pipe (205) at the inner end of the dust hood (203), and a plurality of groups of spray nozzles (209) arranged and fixedly installed inside the inner ring tube (208).

3. The device for visual inspection of PCB appearance defects according to claim 1, characterized in that: The impurity removal component (200) further comprises an electric push rod (210) fixedly mounted on the top of the dust cover (203), and the top of the electric push rod (210) is fixed on the detection platform (100).

4. The device for visual inspection of PCB appearance defects according to claim 1, characterized in that: The impurity removal component (200) further comprises a reduction motor (211) fixedly mounted on the bottom of the rotating disk (201), and the bottom of the reduction motor (211) is fixed in the detection platform (100).

5. The device for visual inspection of PCB appearance defects according to claim 1, characterized in that: The positioning assembly (300) comprises an electric slide rail (301) fixedly mounted at the rear end of the detection platform (100), and an adjustment frame (302) mounted at the front end of the electric slide rail (301).

6. The device for visual inspection of PCB appearance defects according to claim 1, characterized in that: The positioning assembly (300) further comprises a restraining groove (303) provided in the adjusting frame (302), and a bidirectional threaded rod (304) movably installed in the adjusting frame (302); the outer ends of the bidirectional threaded rods (304) on both sides of the restraining groove (303) are movably installed with sliding sleeves (305); and the outer ends of the sliding sleeves (305) are fixedly installed with restraining plates (306).

Images