Handling, including squaring of conveyed shingled sheets

Details Handling, including squaring of conveyed shingled sheets Handling, including squaring of conveyed shingled sheets

B - Operations, Transporting

65

H

270/63

B65H 29/22 (2006.01) B65H 5/36 (2006.01)

Patent

CA 1327818

Abstract of the Disclosure A shingle handling and squaring device (18) is disposed between a sheet shingler (5) and stacker (9) and mounted above a stack infeed conveyor (19). The device includes a pair of side carriages (23,24), each of which carries a pair of freely rotatable longitudinally in-line tamping rollers or wheels (29- 32), the peripheries of which are adapted to engage an edge of the traveling sheet material (6). The wheels are mounted for rotation about generally vertical but slightly inclined axes (48) and have tapered peripheries (51) so that the wheels nevertheless present truly vertical faces to the sheet material. The wheels are counterbalanced (56). In addition, when the stacker infeed nip roll (17) is raised by the entry of shingled sheets, a device (57-60) is provided to release the nip roll from the sheets to prevent binding. While the nip roll is released, the side carriages are moved transversely inwardly toward the sheet edges in a unique manner such that even off-center sheets are automatically and properly engaged and squared by the tamping wheels before the stacker infeed nip roll is re-engaged with the sheets. Furthermore, an automatic jam detection and releasing arrangement (72,73,57) is associated with the upstream wheels (29,31) and which is responsive to excessive upward wheel lifting about a transverse axis (45).

611975

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