초록 ▼

A machine for cutting and folding an uninterrupted printed web of paper to produce folded sections includes a cutting cylinder cooperating with a transfer cylinder. The transfer cylinder is rotationally driven about its longitudinal axis and interacts with a folding cylinder having a set of folding

A machine for cutting and folding an uninterrupted printed web of paper to produce folded sections includes a cutting cylinder cooperating with a transfer cylinder. The transfer cylinder is rotationally driven about its longitudinal axis and interacts with a folding cylinder having a set of folding jaws. The transfer cylinder has an external transfer surface interrupted by a number of sets of impaling pins and engaging blades intended to introduce the transversely cut web of paper into the folding jaws. The transfer cylinder also includes means for causing the angular spacing between the engaging blades and the impaling pins to vary. The disclosed transfer cylinder also includes, in the region of its external transfer surface, a set of closure plates on either side of each engaging blade and on either side of each set of impaling pins. The closure plates and the complementary plates may slide with respect to one another, so as to mutually overlap to form a practically continuous external transfer surface, regardless of the angular spacing between the engaging blades and the impaling pins.

대표청구항 ▼

An apparatus for cutting and folding a web of material, comprising: a) a transfer cylinder including: a cylinder body having an external surface; a plurality of sets of impaling pins, each set of impaling pins selectively movable between a retracted and an extended position relative to the external

An apparatus for cutting and folding a web of material, comprising: a) a transfer cylinder including: a cylinder body having an external surface; a plurality of sets of impaling pins, each set of impaling pins selectively movable between a retracted and an extended position relative to the external surface; a plurality of engaging blades pivotably coupled to the cylinder body; a mechanism for varying an angular spacing between the engaging blades and the sets of impaling pins, the mechanism coupled to the cylinder body; one or more pairs of closure plates disposed adjacent to the external surface, each pair of closure plates comprising a first closure plate and a second closure plate, each first closure plate disposed adjacent to a first side of an engaging blade corresponding to the pair of closure plates, and each second closure plate disposed adjacent to a second side of the corresponding engaging blade; one or more pairs of complementary plates disposed adjacent to the external surface, each pair of complementary plates having a first complementary plate and a second complementary plate, each pair of complimentary plates associated with a respective set of impaling pins, each first complementary plate of a pair of complementary plates disposed on a first side of the respective set of impaling pins, and each second complementary plate of the pair of complimentary plates disposed on a second side of the respective set of impaling pins, each complementary plate slidably coupled to a corresponding closure plate to form a substantially continuous external transfer surface independent of the angular spacing between the engaging blade and the set of impaling pins; b) a cutting cylinder cooperating with the transfer cylinder; and c) a folding cylinder cooperating with the transfer cylinder having one or more folding jaws into which the web of paper is introduced by the engaging blades.