CN116500424B

CN116500424B - PCB detection device

Info

Publication number: CN116500424B
Application number: CN202310762646.2A
Authority: CN
Inventors: 杨光; 纪贤强; 华伟; 张天永; 刘文灿
Original assignee: Shenzhen Keluonuosi Technology Co ltd
Current assignee: Shenzhen Keluonuosi Technology Co ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2024-03-29
Anticipated expiration: 2043-06-27
Also published as: CN116500424A

Abstract

The application relates to a PCB detection device, which comprises an assembly workbench, a mounting bracket, a test station mechanism, a precision checking mechanism, a detection mechanism and a control system, wherein the mounting bracket and the test station mechanism are arranged on the assembly workbench; the assembly plate is arranged on the rotation plane of the electric rotating table and is used for placing the PCB; the precision checking mechanism and the detection mechanism are arranged on the mounting bracket. The test station mechanism slides the PCB to the lower part of the precision checking mechanism and the detection mechanism, the precision checking mechanism and the detection mechanism check and detect the precision of the PCB, and when errors exist in the placement position of the PCB, the problem that the probe measurement of the test equipment is pressed down and is not aligned with the test point of the PCB, so that various performances of the PCB cannot be accurately measured is solved.

Description

PCB detection device

Technical Field

The application relates to the field of detection devices, in particular to a PCB detection device.

Background

PCBs are very important components in modern electronics, which are made of conductive materials and on which are many electronic components, such as resistors, capacitors, diodes, etc., which are connected together according to a specific circuit pattern, typically using wire-bridge or wire-print format, and which need to be inspected during PCB manufacture to ensure quality and reliability.

In the related technical means, the detection of the PCB adopts an electrical test, the PCB is arranged on a test station of test equipment, the probe of the test equipment is used for directly detecting the corresponding test points on the main board and the expansion card, the probe of the test equipment can inject signals into the circuit board, and then the output electrical signals are detected, so that the test can detect abnormal open circuit, short circuit, wrong vertical distance, communication, resistance value and capacitance value.

According to the technical scheme, automatic detection of the PCB is realized through the probe of the testing equipment, but after the PCB is installed at the testing station of the testing equipment, because the testing station is not adjustable, when errors exist in the placing position of the PCB, the probe measurement pressing of the testing equipment is not aligned with the testing point of the PCB, so that various performances of the PCB cannot be accurately measured.

Disclosure of Invention

The invention aims to provide a PCB detection device and aims to solve the problems existing in the prior art.

The application provides a PCB detection device adopts following technical scheme:

the utility model provides a PCB detection device, includes assembly workbench, installing support, test station mechanism, precision checking mechanism, detection mechanism and control system, the installing support with test station mechanism sets up the assembly workbench up end, test station mechanism includes electronic revolving stage, assembly plate and lead screw subassembly, electronic revolving stage sets up on the slider of lead screw subassembly, the assembly plate sets up the rotation plane of electronic revolving stage, the assembly plate is used for placing the PCB; the precision checking mechanism and the detection mechanism are arranged on the mounting bracket; the control system is used for controlling the test station mechanism to slide the PCB on the assembly plate to the lower parts of the precision checking mechanism and the detection mechanism, controlling the precision checking mechanism to check the precision of the PCB on the assembly plate, and controlling the detection mechanism to detect the PCB on the assembly plate; the precision checking mechanism comprises a shooting camera, a camera support and a lighting lamp, wherein the camera support is arranged on the mounting support, the shooting camera is arranged on the camera support, and the lighting lamp is arranged at the shooting end of the shooting camera and is fixed on the camera support; the detection mechanism comprises a movable assembly, a detection probe, a support plate and a detection cylinder, wherein the detection probe is arranged on the movable assembly, and the movable assembly is arranged on the mounting bracket in a sliding manner; the supporting plate is positioned above the movable assembly and fixed on the mounting bracket, the detection cylinder is arranged on the supporting plate, and the piston of the detection cylinder penetrates through the supporting plate to be connected with the movable assembly; the sliding block of the screw rod assembly is provided with an extension block, the assembly plate and the extension block are provided with an angle sensor, and the angle sensor is used for controlling the rotation angle of the assembly plate.

As a preferable scheme, the movable component comprises a guide rail, a guide sliding block, a connecting block and a probe fixing plate, wherein the guide rail is arranged on the mounting bracket, and the guide sliding block is arranged on the guide rail in a sliding manner; the piston of detection cylinder with the probe fixed plate is connected, connecting block one end with the probe fixed plate is connected, the connecting block other end with the direction slider is connected, the detection probe sets up the probe fixed plate.

As a preferable scheme, the probe fixing plate and the mounting bracket are provided with a height sensor, and the height sensor is used for controlling the sliding height of the probe fixing plate.

As a preferable scheme, a distance measuring sensor is arranged on the screw rod assembly sliding block and the assembling workbench, and the distance measuring sensor is used for controlling the sliding distance of the screw rod assembly sliding block.

As a preferable scheme, the upper end of the assembly workbench is provided with a protection box body, and the side edge of the protection box body is provided with a picture display module.

Preferably, a control console is arranged on the lower end face of the assembly workbench, and the control system is arranged in the control console.

Preferably, a universal wheel is arranged below the control console, and the universal wheel is used for carrying the detection device.

Compared with the prior art, the application has the following beneficial effects: the test station is adjustable, and the PCB detection precision is high. Through placing PCB on the assembly plate, the assembly plate sets up on the swivel plane of electric turntable, after the accuracy check mechanism checks the PCB, electric turntable receives the error that needs to check, let electric turntable's swivel plane drive PCB carry out angle compensation, test station mechanism conveys PCB to detection mechanism below again, let detection mechanism detect PCB, thereby improve test station's unadjustability, when PCB put the position and have the error, the probe measurement of test equipment pushes down and the test point of PCB aligns the problem of each item performance that leads to unable accurate measurement PCB.

Drawings

Fig. 1 is a schematic partial structure of a PCB inspection apparatus according to an embodiment of the present application;

FIG. 2 is a schematic rear view of a PCB inspection device according to an embodiment of the present application;

FIG. 3 is an enlarged partial view of the portion "A" of FIG. 2;

FIG. 4 is an enlarged partial view of the portion "B" of FIG. 2;

fig. 5 is a schematic diagram of the overall structure of a PCB inspection apparatus according to an embodiment of the present application.

Reference numerals illustrate:

1. an assembly workbench; 11. protecting the box body; 12. a console; 121. a universal wheel; 2. a mounting bracket; 3. a test station mechanism; 31. an electric rotating table; 32. an assembly plate; 33. a screw assembly; 331. an extension block; 4. a precision checking mechanism; 41. a shooting camera; 42. a camera mount; 43. lighting a lamp; 5. a detection mechanism; 51. a movable assembly; 511. a guide rail; 512. a guide slide block; 513. a connecting block; 514. a probe fixing plate; 52. detecting a probe; 53. a support plate; 54. detecting a cylinder; 6. a height sensor; 7. a ranging sensor; 8. an angle sensor; 9. and a picture display module.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

The implementation of the present invention will be described in detail below with reference to specific embodiments;

referring to fig. 1 and 2, a PCB inspection apparatus includes an assembly table 1 for holding each mechanism on a same work plane, a mounting bracket 2 for mounting each mechanism, a test station mechanism 3 for assembling PCBs, a precision check mechanism 4 for detecting the positional precision of PCBs, a detection mechanism 5 for detecting the functions of PCBs, and a control system (not shown in the drawings) for controlling each mechanism to cooperate with each other; the mounting bracket 2 and the test station mechanism 3 are arranged on the upper end surface of the assembly workbench 1, wherein the test station mechanism 3 comprises an electric rotating table 31, an assembly plate 32 and a screw rod assembly 33, the electric rotating table 31 is arranged on a sliding block of the screw rod assembly 33 and moves along with the sliding block to do reciprocating linear motion, the assembly plate 32 is arranged on a rotating plane of the electric rotating table 31, the rotating plane of the electric rotating table 31 drives the assembly plate 32 to do angle adjustment, and a PCB is arranged on the assembly plate 32 and is adjusted on the electric rotating table 31 along with the assembly plate 32; the precision checking mechanism 4 for checking the PCB and the detection mechanism 5 for detecting the PCB are arranged on the mounting bracket 2, and the screw rod assembly 33 is arranged below the precision checking mechanism 4 and the detection mechanism 5 in a penetrating way. After the control system (not shown) controls the precision checking mechanism 4 to check the PCB, the electric rotating table 31 allows the PCB to rotate and compensate to a proper position, then, the control system (not shown) controls the sliding block of the screw rod assembly 33 to drive the PCB to the lower part of the detecting mechanism 5, at this time, the detecting mechanism 5 detects the PCB, so that the unadjustability of the testing station is improved, and when the placing position of the PCB has an error, the problem that the probe measurement of the testing device is pressed down and is not aligned with the testing point of the PCB, so that each performance of the PCB cannot be accurately measured can be caused.

Referring to fig. 1 and 2, the precision checking mechanism 4 for checking includes a photographing camera 41, a camera holder 42, and a lighting lamp 43, the camera holder 42 being provided on the mounting holder 2, the photographing camera 41 being provided on the camera holder 42, the lighting lamp 43 having a lighting effect being provided at a photographing end of the photographing camera 41 and being fixed on the camera holder 42; when the precision checking mechanism 4 needs to check the photographing of the PCB, the problem that the photographing camera 41 photographs and grabs the PCB in the poor environment of the light source is unstable is solved by mutually matching the light supplementing lamp and the photographing camera 41.

Referring to fig. 1 and 2, the detection mechanism 5 with the detection function includes a movable assembly 51, a detection probe 52, a support plate 53, and a detection cylinder 54, wherein the detection probe 52 is disposed on the movable assembly 51, the movable assembly 51 is slidably disposed on the mounting bracket 2, and the detection probe 52 disposed on the movable assembly 51 can move on the mounting bracket 2; the supporting plate 53 is arranged above the movable assembly 51 and fixed on the mounting bracket 2, the detection cylinder 54 is arranged on the supporting plate 53, and meanwhile, the piston of the detection cylinder 54 penetrates through the supporting plate 53 to be connected with the movable assembly 51, so that the piston of the detection cylinder 54 can drive the movable assembly 51 to do reciprocating linear motion, and the detection probe 52 arranged on the movable assembly 51 can slide downwards to detect a test point of the PCB.

Referring to fig. 1 and 2, the movable assembly 51 to which the detection probe 52 is assembled includes a guide rail 511, a guide slider 512, a connection block 513, and a probe fixing plate 514, the detection probe 52 is disposed on the probe fixing plate 514, the guide rail 511 is disposed on the mounting bracket 2 vertically, and the guide slider 512 is slidably disposed on the guide rail 511; the piston of the detection cylinder 54 is connected with the probe fixing plate 514, and one end of the connection block 513 is connected with the probe fixing plate 514, while the other end is connected with the guide slider 512, and when the piston of the detection cylinder 54 reciprocates, the probe fixing plate 514 is driven to reciprocate on the guide rail 511.

Referring to fig. 2 and 3, in order to control the sliding height of the probe-fixing plate 514 on the mounting bracket 2, a height sensor 6 is provided at a side wall of the probe-fixing plate 514 and an end of the mounting bracket 2 facing the probe-fixing plate 514, and an electrical signal is transmitted to a control system (not shown) through the height sensor 6 to limit the upper and lower limit positions of the probe-fixing plate 514, thereby controlling the sliding height of the probe-fixing plate 514, improving the problem that the probe-fixing plate 514 slides down too deeply, resulting in collision of the sensing probe 52 fixed on the probe-fixing plate 514 with the PCB.

Referring to fig. 2 and 4, the position where the slider of the screw assembly 33 stays is below the precision checking mechanism 4 and the detecting mechanism 5, a ranging sensor 7 is provided on the slider of the screw assembly 33 and the assembly table 1, and when the screw assembly 33 slides below the precision checking mechanism 4 and the detecting mechanism 5, the ranging sensor 7 sends a stop electric signal to a control system (not shown in the drawing) to allow the control system (not shown in the drawing) to control the screw assembly 33 to stay, thereby achieving the effect of controlling the sliding distance of the slider of the screw assembly 33.

Referring to fig. 2 and 4, in order to monitor the rotation angle of the rotating platform of the electric rotating platform 31, an extension block 331 is provided on the slider of the screw assembly 33, and angle sensors 8 are provided on the assembly plate 32 and the extension block 331, after the photographing camera 41 photographs the PCB on the assembly plate 32, errors to be checked are sent to a control system (not shown in the figure), the control system (not shown in the figure) controls the electric rotating platform 31 to rotate to a corresponding angle, and the angle sensors 8 help the control system (not shown in the figure) to monitor the rotation angle, so as to solve the problem of inconvenient monitoring of the rotation angle of the rotating platform of the electric rotating platform 31.

Referring to fig. 1 and 5, a protection case 11 is provided at the upper end of the assembly table 1, and each mechanism is provided in the protection case 11 to increase the safety of the apparatus; the side of the protection box 11 is provided with a picture display module 9, the picture display module 9 is connected with a control system (not shown in the figure), and the control system (not shown in the figure) transmits various parameters to the picture display module 9, so that various parameter transmissions are displayed in a picture form, and the effect of real-time monitoring is achieved. Referring to fig. 1 and 2, a control console 12 is provided on the lower end surface of the assembly table 1, and a control system (not shown) is provided in the control console 12; in order to facilitate the transportation of the PCB detection device, the universal wheels 121 are arranged below the control console 12, and when the transportation is needed, the transportation of the PCB detection device can be realized only through the universal wheels 121, so that the problem that the PCB detection device is inconvenient to transport is solved.

The implementation principle of the PCB detection device provided by the embodiment of the application is as follows: the accuracy of PCB detection is increased by the cooperation of the assembly workbench 1, the mounting bracket 2, the test station mechanism 3, the accuracy checking mechanism 4, the detection mechanism 5 and a control system (not shown in the figure). Specifically, the mounting bracket 2 and the test station mechanism 3 are arranged on the assembly workbench 1, and the test station mechanism 3 consists of an electric rotary table 31, an assembly plate 32 and a screw rod assembly 33. The electric rotating table 31 is disposed on the slider of the screw assembly 33, and the assembly plate 32 is disposed on the rotation plane of the electric rotating table 31 for placing the PCB to be inspected. The precision checking mechanism 4 and the detection mechanism 5 are respectively arranged on the mounting bracket 2; when the detection is carried out, a control system (not shown in the figure) controls the test station mechanism 3 to slide the PCB on the assembly plate 32 to the position below the precision checking mechanism 4, the precision checking mechanism 4 is used for checking the precision of the PCB on the assembly plate 32, the electric rotating table 31 receives errors required to be checked, the rotating platform of the electric rotating table 31 drives the PCB to carry out angle compensation, after the compensation is finished, the control system (not shown in the figure) controls the test station mechanism 3 to slide the PCB to the position below the detection mechanism 5, the detection is carried out through the detection mechanism 5, and the whole process is controlled by the control system (not shown in the figure), so that the accuracy and the reliability of the detection are ensured; therefore, the unadjustability of the test station is improved, and when errors exist in the placement position of the PCB, the problem that the probe measurement downward pressure of the test equipment is not aligned with the test point of the PCB, so that various performances of the PCB cannot be accurately measured can occur.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The PCB detection device is characterized by comprising an assembly workbench (1), a mounting bracket (2), a test station mechanism (3), a precision checking mechanism (4), a detection mechanism (5) and a control system, wherein the mounting bracket (2) and the test station mechanism (3) are arranged on the upper end face of the assembly workbench (1), the test station mechanism (3) comprises an electric rotating table (31), an assembly plate (32) and a screw rod assembly (33), the electric rotating table (31) is arranged on a sliding block of the screw rod assembly (33), the assembly plate (32) is arranged on a rotating plane of the electric rotating table (31), and the assembly plate (32) is used for placing a PCB; the precision checking mechanism (4) and the detection mechanism (5) are arranged on the mounting bracket (2); the control system is used for controlling the test station mechanism (3) to slide the PCB on the assembly plate (32) to the position below the precision checking mechanism (4) and the detection mechanism (5), controlling the precision checking mechanism (4) to check the precision of the PCB on the assembly plate (32), and controlling the detection mechanism (5) to detect the PCB on the assembly plate (32);

the precision checking mechanism (4) comprises a shooting camera (41), a camera support (42) and a lighting lamp (43), wherein the camera support (42) is arranged on the mounting support (2), the shooting camera (41) is arranged on the camera support (42), and the lighting lamp (43) is arranged at the shooting end of the shooting camera (41) and is fixed on the camera support (42);

the detection mechanism (5) comprises a movable assembly (51), a detection probe (52), a supporting plate (53) and a detection cylinder (54), wherein the detection probe (52) is arranged on the movable assembly (51), and the movable assembly (51) is arranged on the mounting bracket (2) in a sliding manner; the supporting plate (53) is positioned above the movable assembly (51) and fixed on the mounting bracket (2), the detection cylinder (54) is arranged on the supporting plate (53), and the piston of the detection cylinder (54) penetrates through the supporting plate (53) to be connected with the movable assembly (51);

an extending block (331) is arranged on a sliding block of the screw rod assembly (33), an angle sensor (8) is arranged on the assembly plate (32) and the extending block (331), and the angle sensor (8) is used for sending errors needing checking to a control system after a shooting camera (41) shoots a PCB on the assembly plate (32), and the control system controls the rotation angle of the assembly plate (32);

a ranging sensor (7) is arranged on the sliding block of the screw rod assembly (33) and the assembling workbench (1), and the ranging sensor (7) is used for controlling the sliding distance of the sliding block of the screw rod assembly (33);

the movable assembly (51) comprises a guide rail (511), a guide sliding block (512), a connecting block (513) and a probe fixing plate (514), wherein the guide rail (511) is arranged on the mounting bracket (2), and the guide sliding block (512) is arranged on the guide rail (511) in a sliding manner; the piston of the detection cylinder (54) is connected with the probe fixing plate (514), one end of the connecting block (513) is connected with the probe fixing plate (514), the other end of the connecting block (513) is connected with the guide sliding block (512), and the detection probe (52) is arranged on the probe fixing plate (514);

a height sensor (6) is arranged on the probe fixing plate (514) and the mounting bracket (2), and the height sensor (6) is used for controlling the sliding height of the probe fixing plate (514);

the upper end of the assembly workbench (1) is provided with a protection box body (11), and the lower end surface of the assembly workbench (1) is provided with a control console (12).

2. A PCB inspection apparatus according to claim 1, wherein the protective case (11) is provided with a picture display module (9) at a side thereof.

3. A PCB inspection apparatus according to claim 1, characterized in that a control system is provided in the console (12).

4. A PCB inspection apparatus according to claim 3, characterized in that a universal wheel (121) is provided under the console (12), the universal wheel (121) being used for handling the inspection apparatus.