Circuit board detection apparatus with camera module having lifting function

Abstract

The invention relates to the field of the detection of circuit boards, in particular to a circuit board detection apparatus with a camera module having a lifting function. The circuit board detection apparatus comprises a stander, wherein the stander is successively provided with a lower camera module, a lower light source module, a roller compression module, an upper light source module and an upper camera module from bottom to top; both the lower light source module and the lower camera module are fixed at the stander; lenses of the upper camera module and the lower camera module respectively face the roller compression module; and the circuit board detection apparatus also comprises a fixed bracket, the fixed bracket comprises slide seats and a stand bar, two ends of the stand bar are respectively and fixedly provided with the slide seat, and the slide seats are arranged at stand columns at two sides of the stander; and the circuit board detection apparatus also comprises a telescopic apparatus, the telescopic apparatus is fixed to the stander, a working end of the telescopic apparatus is fixed to the fixed bracket, and the telescopic apparatus is used for controlling the fixed bracket to lift along the stander, so that the camera module can move together with the light source module when in zooming, and the optimum initial setting between the camera module and the light source module can be ensured.

Description

technical field [0001] The invention relates to the field of circuit board detection, in particular to a circuit board detection device with a camera module with a lifting function. Background technique [0002] The circuit board inspection device is an advanced online inspection technology. It obtains the image information of the surface of the tested part and compares it with the image information of the qualified part, so as to detect whether the tested part is qualified. At present, online optical detectors are used in a wide range of fields, such as to detect PCB boards (printed circuit boards). Due to the complexity of PCB boards, more and more design circuits, and more and more layers, online optical detectors are used The detector to detect the PCB board is far more mature and efficient than the manual detection method, which is more conducive to ensuring the detection accuracy and controlling the product quality. [0003] When the existing online optical detector d...

AI Technical Summary

Problems solved by technology

[0003] When the existing online optical detector detects, the PCB board is placed on a flat plate, one surface of the PCB board is detected first, and then the PCB board is turned over to detect the other surface of the PCB board, so that the PCB board cannot be detected at the same time. Two surfaces, resulting in low detection efficiency; in addition, due to slight bending of the tested part, insufficient light intensity of the light source and shadow areas, etc., this will affect the accuracy of the acquired image information, thereby affecting Detection accuracy

[0004] According to the conclusions obtained from theory and experiment, the camera with two-way setup can get better results when taking pictures of PCB boards with the same thickness. Larger impact, the detection accuracy will be greatly reduced, so that it is necessary to re-adjust the focal distance between the camera and the circuit board to obtain better detection accuracy

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