Receiving, cutting and piling equipment for strips of sheet material
Apparatus for forming folded stacks from a web
Method and apparatus for zig-zag folding webs of paper and the like Patent #: 4708332
ApplicationNo. 07/181555 filed on 04/14/1988
US Classes:493/357, With means to advance work or product225/104, Breaking tool intermediate spaced work supports270/39.02, Including stack separating493/410Of indeterminate length work
ExaminersPrimary: Schmidt, Frederick R.
Assistant: Lavinder, Jack
Attorney, Agent or Firm
International ClassesB65H 45/00 (20060101)
B65H 45/101 (20060101)
Foreign Application Priority Data1987-04-16 CH
AbstractA continuous running web with panels in zig-zag formation is delivered by a conveyor in the form of a scalloped stream and successive panels are deflected into a duct wherein the panels descend and gather on a bottom wall between two upright sidewalls which contact alternate fold lines between the panels of the growing stack. When the stack on the bottom wall, which descends at the rate at which the stack thereon grows, contains a predetermined number of panels, a spreading device is caused to enter between the topmost panel of the fully grown stack on the bottom wall and the panel above such stack to establish a gap for entry of the dull leading edge of a reciprocable flat tool which moves across the duct in a horizontal plane and breaks the fold line which is then located in the path of movement of the leading edge. The sidewalls have confronting vertical surfaces which are inclined relative to the leading edge of the tool. Such leading edge can be formed by a small-diameter roller which is mounted on a plate-like portion of the tool and is driven so that it rolls along the panel above it while the tool moves across the duct.