| 摘要 |
PURPOSE:To enable the title device to shift a forward movement speed of an ejector in two stages, by enabling a forward movement limit position detector and backward movement limit position detector to be used respectively for setting up a forward movement high-speed projecting division of the ejector and a forward movement initial low-speed projecting division of the ejector. CONSTITUTION:Initial low-speed projection of an ejector is moved until an LS 31 of a backward movement position detector 8 is turned OFF at a low speed (VE 1) set up by a forward movement one speed setting instrument 18 and a high-speed projection of the same is moved until an LS 30 of a forward movement position detector 7 is turned ON at a high speed (VE 2) set up by a forward movement two speed setting instrument 19. After suspension at that position for a period of time (TD 3) set up by an advancing time setting instrument 20 and being on standby, it is moved backward at a high speed until an LS 31X of a return confirmation position detector 9 or 10 is turned ON in a high-speed backward movement speed set value (VER) which has been set up in an inner memory 16. A CPU 13 takes-in those set up values or signal through interface 12, 15, stores them once in a memory 16 and applies control command to an electric flow control valve 2 or a directional control valve 3 through an interface 14. |
