Automatic ranging, straightening and transmitting mechanism applied to circuit board detection machine

Abstract

The invention relates to the technical field of circuit board detection and discloses an automatic ranging, straightening and transmitting mechanism applied to a circuit board detection machine. The automatic ranging, straightening and transmitting mechanism is arranged at the front end of a rack detection end and comprises a rotating roller installation platform, an automatic ranging device and a straightening and transmitting device; the straightening and transmitting device is used for straightening and transmitting a circuit board to the direction of the detection end; the automatic ranging device comprises a hanging beam and a dimension measurement instrument; the dimension measurement instrument comprises a detection shaft and a measurement instrument installation seat; the detection shaft is arranged on the measurement instrument installation seat; the measurement instrument installation seat is arranged on the hanging beam; a feeding infrared detector is also arranged at the rear end of the lower part of the detection shaft; an output end of the feeding infrared detector is electrically connected with an input end of the dimension measurement instrument; and the feeding infrared detector is arranged at the lower part of the rotating roller installation platform.

Description

technical field [0001] The invention relates to the technical field of circuit board detection, in particular to an automatic distance measuring and straightening transmission mechanism applied to a circuit board detection machine. Background technique [0002] With the continuous development of technology, printed circuit boards are becoming thinner and thinner, resulting in denser circuits and more layers. In the traditional and backward technology, the printed circuit board is generally inspected with the naked eye. The existing technology uses a circuit board inspection machine to detect printed circuit boards. The principle is to compare the image information of the tested printed circuit board with the image information of the qualified circuit board to detect whether the tested printed circuit board is Therefore, using a circuit board inspection machine to detect PCB boards (ie printed circuit boards) is far more mature, accurate and efficient than manual testing. ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when testing the circuit board, the circuit board is usually placed directly under the camera, which is very inefficient and can easily lead to inaccurate test results

In addition, some manufacturers use a transmission device in front of the camera detection end to transfer the circuit board to the bottom of the camera, but the automation of the transmission device is not high, and when the camera detects the circuit board, it requires a certain placement of the circuit board, so it still needs manual assistance. To put it right, this will undoubtedly reduce production efficiency, and workers will be more tired at the same time

In addition, because the thickness of the circuit board to be detected is different, the thickness of the circuit board is generally detected when the camera is facing the circuit board, so as to prevent the detection result from being inaccurate due to inaccurate measurement of the focal length between the circuit board and the camera. The best way is to use manual measurement, the efficiency is very low and it is easy to scratch the circuit board

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