CN207735262U - A PCB board automatic detection system - Google Patents

Abstract

The utility model discloses a PCB board automatic detection system, which includes a manipulator, a test bench, a CCD lens, and an analysis control module; it is characterized in that it also includes an infrared sensor, a pneumatic clamping device and a conveyor belt; the infrared sensor is arranged on the CCD lens Directly below, and located on both sides of the conveyor belt; the pneumatic clamping device is arranged 3-5 cm behind the infrared sensor in the direction of conveyance; the CCD lens is arranged directly above the infrared sensor. The utility model has the advantages of simple structure, convenient use, high production efficiency and higher degree of automation.

Description

A PCB board automatic detection system

technical field

The utility model relates to a PCB board detection system, in particular to a PCB board automatic detection system.

Background technique

PCB is a printed circuit board, also known as a printed circuit board. It is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. Almost every electronic device in our daily life, such as electronic watches, calculators, computers, electronic communications, etc., requires a PCB version. A single PCB board contains multiple single pieces, and these single pieces have the same structure and pattern, so that they can be divided into multiple single pieces after the PCB board is manufactured and tested, so as to achieve large-scale production.

In the PCB board production process, in order to ensure the quality of the PCB board, various inspections are required for it. Generally, it is necessary to inspect the appearance defects, short circuits, open circuits, and components of the PCB board. Among them, the appearance inspection of PCB board is through visual inspection, while the detection of short circuit, open circuit and components of PCB board is through electrical test.

In recent years, people have not devoted themselves to improving the detection technology of PCB boards. For example, before the visual inspection and electrical testing of PCB boards were separated, two different equipment were required. According to the test results, it is shown that the Chinese invention patent publication CN202974890U discloses a system that can perform visual inspection and electrical testing at the same time, including a mechanical arm, a test bench, a CCD lens, and an analysis control module. Among them, the PCB board to be tested is placed under the CCD lens to take pictures, and then the image is transmitted to the analysis control module for comparison with the standard image in the storage, that is, visual inspection; while performing visual inspection, the robotic arm places the PCB board on the Conduct electrical tests on the test bench. In the above-mentioned PCB board inspection system, visual inspection and electrical test can be performed at the same time, but only one PCB board can be tested at a time during the electrical test, and it needs to be taken out manually after the test, which is not only inefficient, but also not conducive to operation; When performing visual inspection at the same time, the CCD lens is always in the state of taking pictures, which will damage the service life of the camera.

Utility model content

In order to overcome the deficiencies in the prior art, the utility model provides a PCB board automatic detection system with high production efficiency, high degree of automation and simpler operation.

The technical solution adopted by the utility model to solve the technical problems is: a PCB board automatic control detection system, including a manipulator, a test bench, a CCD lens, and an analysis control module; it also includes an infrared sensor, a pneumatic clamping device, and a conveyor belt; The infrared sensor is set directly below the CCD lens and on both sides of the conveyor belt; the pneumatic clamping device is set at a distance of 3 to 5 cm behind the infrared sensor towards the conveying direction; the CCD lens is set directly above the infrared sensor.

Preferably, a station is provided on the test platform.

Preferably, the CCD lens, the infrared sensor, the pneumatic clamping device, and the manipulator are connected to the analysis control module.

Preferably, the infrared sensor includes a light emitter and a light receiver, and the light emitter and the light receiver are respectively located on two sides of the conveyor belt and are parallel to each other. Ensure that the PCB board can respond in time when it passes the sensor.

Preferably, the pneumatic clamping device is composed of a cylinder and a clamping element, wherein the clamping end of the clamping element is V-shaped. Clamp the PCB board to ensure the stability of the PCB board.

Preferably, an upper fixture is provided directly above the station, and a lower fixture is provided directly below the station. It is convenient for the detection of each single chip on the PCB board.

Preferably, the manipulator is set in the middle of the test bench and can rotate 360 degrees. It is convenient for the manipulator to place the PCB board to any empty station on the test bench for testing, improving the testing efficiency.

Preferably, the analysis control module includes a CPU and a memory. The CPU is used to analyze and control the manipulator, and the memory is used to store standard images.

Beneficial effects: Compared with the prior art, the PCB automatic detection system of the utility model uses the conveyor belt and the infrared sensor to automatically detect the PCB board, does not need to manually place the PCB board, and liberates the production labor force. At the same time, there are multiple The stations can be inspected at the same time, which shortens the inspection time and improves production efficiency; the manipulator can also classify qualified samples and unqualified samples to prevent the mixing of unqualified products and affect the production quality.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural schematic diagram of the utility model PCB board automatic detection system.

Fig. 2 is a schematic diagram of the conveyor belt detection in the PCB automatic detection system of the present invention.

Fig. 3 is a schematic diagram of the working principle of the PCB board automatic detection system of the present invention.

1-conveyor belt; 2-PCB board; 3-infrared sensor; 4-pneumatic clamping device; 5-CCD lens; 6-analysis control module; 7-manipulator; Test bench; 11-station; 12-rework area; 13-emitter; 14-receiver.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in FIG. 1 , a PCB board automatic control detection system includes a manipulator 7 , a test bench 10 , a CCD lens 5 , an analysis control module 6 , an infrared sensor 3 , a pneumatic clamping device 4 and a conveyor belt 1 . An infrared sensor 3 and a pneumatic clamping device 4 are arranged on both sides of the conveyor belt, wherein the infrared sensor 3 is composed of a light emitter 13 and a light receiver 14, and the infrared sensor 3 is connected to the CCD lens 5 and the pneumatic clamping device 4 through wired (wireless); The test bench 10 is provided with a station 11, an upper fixture 8 is provided directly above the station 11, and a lower fixture 9 is provided directly below the station; the CCD lens 5 is arranged directly above the infrared sensor 3, and the CCD The lens is a high-definition CCD camera with a magnification of 25 times and a resolution of 1600 pixels x 1200 pixels, which is connected to the analysis control module 6 by wired (wireless) means; the manipulator 7 is set in the middle of the test bench 10 and can rotate 360 degrees; The analysis control module 6 includes a memory and a CPU, and is connected to the manipulator through a wired (wireless) manner, wherein the memory stores a standard image of the PCB board; the manipulator places unqualified samples in the rework area 12 to wait for rework.

As shown in Figure 2, put the PCB board 2 on the conveyor belt 1 for detection, when the light of the PCB board 2 passing through the infrared sensor 3 composed of the light emitter 13 and the light receiver 14 is blocked, the infrared sensor 3 sends a signal to make the pneumatic clamping The device 4 clamps the PCB board 2, and at the same time, the CCD lens 5 is turned on and takes pictures, and transmits the images to the analysis control module 6 for comparison in a wired (wireless) manner.

As shown in Figure 3, the working principle of this utility model: the PCB board automatic detection system of the utility model places the PCB board on the conveyor belt, and the PCB board passes through the infrared sensor under the action of the conveyor belt. Since the PCB board blocks the infrared rays, the infrared rays The sensor transmits signals to the analysis control module, and the analysis control module allows the cylinder in the pneumatic clamping device to push the clamping element to clamp the PCB board through air pressure, and allows the CCD lens to take pictures of the PCB board and transmit the image to the analysis control module , and perform visual inspection by comparing with the standard image stored in the memory; if the visual inspection passes, the analysis control module sends an instruction to the manipulator to let the manipulator put the PCB board on the station for electrical testing, and if the electrical test passes, the Qualified samples are placed on the next conveyor belt, and unqualified samples are placed in the rework area if the electrical test fails; if the visual inspection fails, the analysis control module sends an instruction to the manipulator to place the PCB board in the rework area.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (8)

1. a kind of pcb board automatic checkout system, including manipulator, testboard, CCD camera lenses, analysis and Control module；Its feature exists In further including infrared sensor, air clamper and conveyer belt；Infrared sensor setting CCD camera lenses just under Side, and it is located at conveyer belt both sides；Air clamper setting apart from infrared sensor toward direction of transfer rear 3cm~ At 5cm；The CCD camera lenses are arranged in the surface of infrared sensor.

2. pcb board automatic checkout system according to claim 1, which is characterized in that the testboard is equipped with station.

3. pcb board automatic checkout system according to claim 1, which is characterized in that the CCD camera lenses, infrared ray sensing Device, air clamper, manipulator and analysis and Control module connect.

4. according to pcb board automatic checkout system described in claim 1, which is characterized in that the infrared sensor includes light projector Device and light-receiving device, light projector and light-receiving device are located at conveyer belt both sides and parallel to each other.

5. pcb board automatic checkout system according to claim 1, which is characterized in that the air clamper is by cylinder It is formed with clamping element, wherein the pinching end of clamping element is V-arrangement.

6. according to pcb board automatic checkout system described in claim 1, which is characterized in that the surface of the station is equipped with and above controls Tool, while jig under being arranged right below of station.

7. pcb board automatic checkout system described in claim 1, which is characterized in that the manipulator setting is hit exactly in testboard Between, and can be rotated by 360 °.

8. pcb board automatic checkout system according to claim 1, which is characterized in that the analysis and Control module includes CPU And memory.