Opening device for folding box, comprises side walls and sealing walls that are hinged at ground, where thrust rotating cylinder is moved for front sided engagement with side wall

摘要

The opening device comprises side walls (11,12) and sealing walls (13,14) that are hinged at the ground, where a thrust rotating cylinder (41) is moved for front sided engagement with the side wall. A lengthen-adjusted tilting arm (51) is retracted for engagement with the upper edge of the sealing wall. An independent claim is also included for an opening method for a folding box.