SHEET FOLDING DEVICE

PROBLEM TO BE SOLVED: To provide a sheet folding device capable of matching two folding positions of a valley fold in a W-fold of a sheet. SOLUTION: Upstream and downstream side conveying roller pairs 101 to 104 convey a center portion of a sheet to a space facing each nip of first folding roller pa...

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Bibliographische Detailangaben
Hauptverfasser:	YASUMITSU TAKUYA, NONAKA MASAHITO
Format:	Patent
Sprache:	eng
Schlagworte:	CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES PACKING PERFORMING OPERATIONS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sheet folding device capable of matching two folding positions of a valley fold in a W-fold of a sheet. SOLUTION: Upstream and downstream side conveying roller pairs 101 to 104 convey a center portion of a sheet to a space facing each nip of first folding roller pairs 201, 202 and second folding roller pairs 211, 212. The downstream side conveying roller pairs are rolled in the reverse direction, and oscillating guides 301 to 304 are tilted, and the center portion of the sheet is guided to the first folding roller pairs 201, 202. The first folding roller pairs fold the center portion of the sheet and rolled in the reverse direction, the oscillating guides are tilted to the other side, and the center portion, the downstream side portion and the upstream side portion of the sheet are guided to the second folding roller pairs 211, 212. The second folding roller pairs fold two parts of the downstream side portion and the upstream side portion of the sheet. The center portion of the sheet forms a ridge-shaped folding end Pa and the upstream side portion and the downstream side portion form folding ends Pb of a valley part, and the sheet is subjected to the W fold. COPYRIGHT: (C)2010,JPO&INPIT