Title:
SHEET FOLDING DEVICE AND CARTON FOLDER
Document Type and Number:
WIPO Patent Application WO/2019/064391
Kind Code:
A1
Abstract:
This sheet folding device and carton folder comprises: a shaping belt (107) that is disposed on both sides of a corrugated cardboard sheet (S) in a conveyance direction (D) of the corrugated cardboard sheet (S) and that presses and folds, from the outside, both ends of the corrugated cardboard sheet (S) in the width direction of the corrugated cardboard sheet (S) by moving further toward the center in the width direction of the corrugated cardboard sheet (S) the further the corrugated cardboard sheet (S) is toward the downstream side in the conveyance direction (D) of the corrugated cardboard sheet (S); and gauge roller groups (105, 106) composed of a plurality of gauge rollers (114, 115) that are disposed along the conveyance direction (D) of the corrugated cardboard sheet (S) and contact the outer sides of folded parts (341, 342) disposed on both sides, in the width direction, of the corrugated cardboard sheet (S) that have been folded by shaping belt (107). A plurality of second gauge rollers (115) each have a recess (151) in the outer circumferential surface thereof, which is radially recessed toward a rotational axis center, and extend in the circumferential direction. The recess (151) is disposed such that the point on the rotational axis center (O) that corresponds to the deepest point (P) of the recess is at a position that is offset downward in a vertical direction, toward the downstream side in the conveyance direction (D) of the corrugated cardboard sheet (S).
Inventors:
AKITA KAZUYA (JP)
IORI SHINYA (JP)
SHIMOHATSUBO MAKOTO (JP)
IORI SHINYA (JP)
SHIMOHATSUBO MAKOTO (JP)
Application Number:
PCT/JP2017/035051
Publication Date:
April 04, 2019
Filing Date:
September 27, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY IND MACH SYSTEMS LTD (JP)
International Classes:
B31B50/58
Foreign References:
| JP2013169690A | 2013-09-02 | |||
| JPS5517700B2 | 1980-05-13 | |||
| JP2004058665A | 2004-02-26 | |||
| JPS5686128U | 1981-07-10 | |||
| JP2004058665A | 2004-02-26 |
Other References:
See also references of EP 3689589A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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