Dimensionally variable lid manufacturing method and dimensionally variable lid manufacturing device
AssigneeRengo Co., Ltd.
InventorsYoshitsune TANAKA, Hiroyuki NOGUCHI, Hiroshi KAWADO, Chiaki WATANABE, Keiichi FUJITANI, Aya KINUGAWA, Mikina SOMA
Life of this patent
Estimating the term…
Abstract
A first scoreline, and a perforated line along which a lid can be severed are formed beforehand in a lid sheet. The portion of the lid sheet along its first adjustment side is cut off in a strip shape by a first cutter. The portion of the lid sheet along its second adjustment side is cut off in a strip shape by a second cutter.
Claims7
A dimensionally variable lid manufacturing method for manufacturing lids which are, respectively, to be placed on a plurality of boxes different in size from each other such that each of the lids has a size corresponding to a size of a top end opening of a corresponding one of the boxes,
- the method comprising preparing rectangular lid sheets which are to be formed into the respective lids, the rectangular lid sheets being each defined by a first reference side, a second reference side intersecting with the first reference side at a right angle, a first adjustment side extending parallel to the first reference side, and a second adjustment side extending parallel to the second reference side,
- wherein each of the lid sheets is formed, beforehand, with a first scoreline that allows the lid to be bent downwardly along a first side of the top end opening of the corresponding one of the boxes, and a perforated line along which the lid of the lid sheet can be severed, the first scoreline and the perforated line extending along, and parallel to, the first reference side of the lid sheet;
- the method further comprising:
- a first dimension adjustment step of cutting off a portion of each of the lid sheets along the first adjustment side in a strip shape with a first cutter;
- a second dimension adjustment step of cutting off a portion of the lid sheet along the second adjustment side in a strip shape using a second cutter;
- and
- concurrently with the first dimension adjustment step, forming, in the lid sheet, a second scoreline extending parallel to the first scoreline using a scoreline roller disposed at a predetermined interval from the first cutter such that the second scoreline allows the lid to be bent downwardly along a second side of the top end opening of the corresponding one of the boxes, the second side being opposed to the first side;
- wherein a cut-off width of the portion of the lid sheet cut off by the first cutter, and a cut-off width of the portion of the lid sheet cut off by the second cutter are adjusted according to the size of the top end opening of the corresponding one of the boxes.
A dimensionally variable lid manufacturing device for manufacturing lids which are, respectively, to be placed on a plurality of individual boxes different in size from each other such that each of the lids has a size corresponding to a size of a top end opening of a corresponding one of the individual boxes,
- wherein as a material for each of the lids, a rectangular lid sheet is used which is defined by a first reference side, a second reference side intersecting with the first reference side at a right angle, a first adjustment side extending parallel to the first reference side, and a second adjustment side extending parallel to the second reference side,
- wherein the lid sheet is formed, beforehand, with a first scoreline that allows the lid to be bent downwardly along a first side of the top end opening of the corresponding one of the boxes, and a perforated line along which the lid can be severed, the first scoreline and the perforated line extending along, and parallel to, the first reference side of the lid sheet;
- the dimensionally variable lid manufacturing device comprising:
- a first cutter configured to cut off, in a strip shape, a portion of the lid sheet along the first adjustment side thereof;
- a second cutter configured to cut off, in a strip shape, a portion of the lid sheet along the second adjustment side thereof;
- a scoreline roller disposed at a predetermined interval from the first cutter such that, when the portion of the lid sheet along the first adjustment side thereof is cut off in a strip shape by the first cutter, the scoreline roller forms, in the lid sheet, a second scoreline that extends parallel to the first scoreline of the lid sheet and allows the lid to be bent downwardly along a second side of the top end opening of the corresponding one of the boxes, the second side being opposed to the first side;
- and
- a cut-off-width adjusting mechanism configured to adjust a cut-off width of the portion of the lid sheet cut off by the first cutter, and a cut-off width of the portion of the lid sheet cut off by the second cutter, according to the size of the top end opening of the corresponding one of the boxes.
Dependencies are inferred from the claim text.