| 摘要 |
PURPOSE:To provide an automatic demagnetizer capable of automatically demagnetizing a ring member of large diameter which is composed of a demagnetizing means, a rotating means which causes the demagnetizing means in demagnetizing condition to move away, a moving means and a control means for controlling those means. CONSTITUTION:A member A to be demagnetized is mounted on a rotating means 3 and a demagnetizing cycle start signal S1 is given to a control means 5. Based on signal S1, the control means 5 sends an approach command signal S2 to a moving means 2 and causes a demagnetizing means 1 to move to a demagnetizing position directly below the member A to be demagnetized. Based on a detection signal S3 from a limit switch (not shown), the control means 5 sends out in order a rotation command signal S4 to the rotating means 3 and an operation command signal S5 to the demagnetizing means 1 and demagnetization is started. Based on a time passage signal S6 from a timer (e), the control means 5 sends out a move-away command signal S7 to the moving means 2 and causes the demagnetizing means 1 to move back to its initial position. Based on a detection signal from a limit switch, the control means 5 sends out stop command signals S9, S10 to the demagnetizing means 1 and rotating means 3 respectively, and a series of demagnetization cycle is completed. |
