초록 ▼

The invention provides an improved method of forming one or more box blanks (20) from a generally-rectangular sheet of material, comprising the steps of: providing a frame (28) for supporting and guiding the sheet; placing a sheet of material on the frame; controllably moving the sheet in a longitud

The invention provides an improved method of forming one or more box blanks (20) from a generally-rectangular sheet of material, comprising the steps of: providing a frame (28) for supporting and guiding the sheet; placing a sheet of material on the frame; controllably moving the sheet in a longitudinal direction relative to the frame; providing at least one longitudinal score line (21) on the sheet as the sheet moves relative to the frame; punching a first hole in the sheet; cutting a first slot (23) in the sheet between one longitudinal edge thereof and the first hole; punching a second hole in the sheet at a position spaced transversely across from the first hole; cutting a second slot (23) in the sheet between the other longitudinal edge thereof and the second hole; providing a transverse score line (22) on the sheet between the first and second holes; punching longitudinal slots in the sheet to severe the flaps (24) from the glue tab (27); and cutting the sheet to the length required for the desired shape and dimensions of the box; thereby to provide a creased and slotted box blank.

대표청구항 ▼

[ What is claimed is:] [1.] The method of forming a scored and slotted box blank from a generally-rectangular sheet of material, comprising the steps of:providing a frame for supporting and guiding said sheet;placing a sheet of material on said frame, said sheet having first and second longitudinal

[ What is claimed is:] [1.] The method of forming a scored and slotted box blank from a generally-rectangular sheet of material, comprising the steps of:providing a frame for supporting and guiding said sheet;placing a sheet of material on said frame, said sheet having first and second longitudinal edges;providing guide means extending transverse to said longitudinal edges of said sheet;providing a carriage mounted to said guide means for transverse movement along the guide means;providing a transverse cutting means mounted to said carriage for transverse movement with said carriage to transversely cut across said sheet and form predetermined slots in said sheet;providing punch means mounted to said carriage for selectively punching slots in said sheet;controlling said transverse slot cutting means to transversely cut at least one predetermined slot in said sheet;controlling said punch means to punch a first slot in said sheet at a transverse position;controllably moving said sheet in a longitudinal direction relative to said frame;controlling said punch means to punch a second slot longitudinally overlapping said first slot;thereby to punch a longitudinal slot in said sheet greater than the longitudinal width of said punch.