Hurdle board for sheet-fed printing machines has integrated fold-down distance elements with pretension and locking parts

摘要

The rectangular board (2) is for separation of sheet stacks in the sheet feeder. Several distance elements (4) are fastened to each board in each corner. The elements are moveable between a position, where they are sunk into the board, and a vertical supporting position. Each element is loaded into vertical position by pretension parts (26), and held in sunk position by locking parts (34). These are activated from the side of the board to release the distance elements.