METHOD AND DEVICE FOR MONITORING UPWARD WARP ON-LINE OF BAR IN ROUGH MILLING PROCESS BY USING LASER CURTAIN

摘要

Purpose: method and apparatus are used to monitor an online damage and malfunction by preventing running equipment of upward bending and are arranged to improve the defect of product quality and minimize enhancing by the time of non-operation to roll efficiency. Construction: a kind of laser oscillation light vibrated from a laser generation group is blocked, when one front end portion that wherein upward bending is generated passes through a laser curtain. Then, some optical receiving sensors of a light-receiving multicast (8) do not receive laser. Here, the optical receiving sensor for not receiving laser sends a signal cancelled. In addition, other optical receiving sensors of a monitor control system shift an ongoing signal. Correspondingly, upward bending of the degree in item is monitored.