Position adjusting method and apparatus for adjustment target portion in sheet processing machine

Abstract

In a position adjusting method for an adjustment target portion in a sheet processing machine including a pile board which is lifted and lowered with a sheet stacked thereon, and the adjustment target portion a position of which is adjusted in accordance with a size of the sheet on the pile board, the pile board is lifted with the sheet stacked thereon, and the adjustment target portion is moved in a direction to further separate from a center of the sheet on the pile board as the pile board is lifted. A position adjusting apparatus is also disclosed.

1 . A position adjusting method for an adjustment target portion in a sheet processing machine comprising a pile board which is lifted and lowered with a sheet stacked thereon, and the adjustment target portion a position of which is adjusted in accordance with a size of the sheet on the pile board, comprising the steps of:
 lifting the pile board with the sheet stacked thereon; and   moving the adjustment target portion in a direction to further separate from a center of the sheet on the pile board as the pile board is lifted.   
     
     
         2 . A method according to  claim 1 , wherein the step of moving comprises the step of moving the adjustment target portion in the direction to further separate from the center of the sheet stacked on the pile board when lifting of the pile board is manually designated. 
     
     
         3 . A method according to  claim 1 , wherein the step of moving comprises the steps of
 detecting lifting of the pile board, and   moving the adjustment target portion in the direction to further separate from the center of the sheet on the pile board when lifting of the pile board is detected.   
     
     
         4 . A method according to  claim 1 , further comprising the steps of:
 detecting stop of lifting of the pile board, and   returning the adjustment target portion, when stop of lifting of the pile board is detected, to a position where the adjustment target portion has been before the pile board is lifted.   
     
     
         5 . A method according to  claim 1 , wherein the step of moving comprises the step of moving the adjustment target portion by a predetermined distance in the direction to further separate from the center of the sheet on the pile board. 
     
     
         6 . A method according to  claim 1 , further comprising the steps of
 inputting the sheet size of the sheet on the pile board, and   setting a preset position of the adjustment target portion in accordance with the input sheet size of the sheet,   wherein the step of moving comprises the step of moving the adjustment target portion from the preset position to a position spaced apart by a predetermined distance in the direction to further separate from the center of the sheet on the pile board.   
     
     
         7 . A position adjusting apparatus comprising:
 a pile board which is lifted and lowered with a sheet stacked thereon;   an adjustment target portion a position of which is adjusted in accordance with a size of the sheet on said pile board; and   moving means for moving said adjustment target portion in a direction to further separate from a center of the sheet on said pile board as said pile board is lifted.   
     
     
         8 . An apparatus according to  claim 7 , further comprising a manual operation unit which designates lifting of said pile board,
 wherein said moving means moves said adjustment target portion when said manual operation unit designates lifting of said pile board.   
     
     
         9 . An apparatus according to  claim 7 , further comprising a detection unit which detects lifting of said pile board,
 wherein said moving means moves said adjustment target portion when said detection unit detects lifting of said pile board.   
     
     
         10 . An apparatus according to  claim 7 , further comprising means for returning said adjustment target portion, when lifting of said pile board is stopped, to a position where said adjustment target portion has been before said pile board is lifted. 
     
     
         11 . An apparatus according to  claim 7 , wherein said moving means moves said adjustment target portion by a predetermined distance in the direction to further separate from the center of the sheet on said pile board when said pile board is lifted. 
     
     
         12 . An apparatus according to  claim 7 , further comprising:
 an input unit which inputs the sheet size of the sheet stacked on said pile board; and   means for determining a preset position of said adjustment target portion in accordance with the input sheet size of the sheet,   wherein said moving means moves said adjustment target portion from the preset position to a position spaced apart by a predetermined distance in the direction to further separate from the center of the sheet on said pile board.   
     
     
         13 . An apparatus according to  claim 7 , wherein said adjustment target portion comprises a sucker of a feed unit which feeds the sheet on said pile board. 
     
     
         14 . An apparatus according to  claim 7 , wherein said adjustment target portion comprises a side separator of a feed unit which feeds the sheet stacked on said pile board. 
     
     
         15 . An apparatus according to  claim 7 , wherein said adjustment target portion comprises a suction wheel of a delivery unit which delivers the sheet onto said pile board. 
     
     
         16 . An apparatus according to  claim 7 , wherein the adjustment target portion comprises a side jogger of a delivery unit which delivers the sheet onto said pile board.