METHOD OF WORKING PAPERBOARD BLANKS

摘要

A method of working paperboard blanks (104) is disclosed. The method including providing first and second pairs of parallel rotary shafts (106, 121) supporting first and second pairs of tool heads (119, 135) respectively. The first pair of tool heads (119) is moved to a predetermined longitudinal position along the first pair of shafts (106) to define a first line of working (150). Likewise, the second pair of tool heads (135) is moved to a predetermined longitudinal position along the second pair of shafts (121) to define a second line of working (152) wherein a center of the first line of working (150) is displaced relative to a center of the second line of working (152). The paperboard blank (104) is conveyed between the first and second pairs of tool heads (116, 135) to form a panel line on the paperboard blank (104). The tool heads may be automatically positioned along their respective shafts by coupling members (262, 264) which move linearly parallel to the shafts.