초록 ▼

An apparatus for forming a score line in a pre-cut blank, such as an envelope blank (3), includes a scoring blade roller (6) and a counter roller (7), wherein a portion of the circumferential surface of the scoring blade roller (6) is provided with a suction shell (12) having a plurality of suction

An apparatus for forming a score line in a pre-cut blank, such as an envelope blank (3), includes a scoring blade roller (6) and a counter roller (7), wherein a portion of the circumferential surface of the scoring blade roller (6) is provided with a suction shell (12) having a plurality of suction openings (13) therein. The suction openings are connected together in respective groups that may be individually and selectively connected to a vacuum or suction air source. In this manner, a leading edge portion (72) of the blank (3) can be taken up, held, and rotationally pulled by the scoring blade roller (6), while a tail portion (70, 71) of the blank (3) downstream of the score lines (2) or the scoring blades (33, 34) is not fixedly held on the scoring blade roller (6), but rather is only loosely held and guided along. A method of forming score lines in a blank avoids tearing, deforming or shifting the blank out of registration at the time of forming the score lines, by pulling the blank (3) in the transport direction by its leading edge, while leaving the tail end portion (70, 71) of the blank (3) downstream from the intended location of the score line (2) loose, so that it can freely move as necessary to carry out compensation movements while the score line is being formed.

대표청구항 ▼

1. An apparatus for forming a score line on a sheet goods blank, comprising:a machine frame; a rotation drive; a drive shaft connected to said rotation drive; a scoring blade roller that is rotatably supported on said machine frame and mounted on said drive shaft to rotate said scoring blade roller

1. An apparatus for forming a score line on a sheet goods blank, comprising:a machine frame; a rotation drive; a drive shaft connected to said rotation drive; a scoring blade roller that is rotatably supported on said machine frame and mounted on said drive shaft to rotate said scoring blade roller with said drive shaft; and a counter roller that is rotatably supported adjacent to said scoring blade roller and that is mounted on said machine frame so as to be tiltable, adjustable and fixable at a selected adjusted position relative to said scoring blade roller so as to contact and cooperate with said scoring blade roller; wherein said scoring blade roller includes at least one scoring blade adapted to cooperate with said counter roller to form a score line on a sheet goods blank, and a suction shell that is mounted on said drive shaft and that extends on a first angular portion of a circumference of said scoring blade roller; and wherein said suction shell has a plurality of suction holes in an outer arcuate surface thereof that are adapted to be connected to a suction vacuum so as to suction hold said sheet goods blank onto said suction shell to engage and transport said sheet goods blank on said scoring blade roller.