Method for trimming rectangular container and apparatus trimming rectangular container
AssigneeToyo Seikan Group Holdings, Ltd.
InventorsHiroki Tanaka, Shinichi Miyose
Life of this patent
Estimating the term…
Abstract
A method for trimming a rectangular container and an apparatus trimming a rectangular container are provided, by which an appropriate cut surface with a possible crack or burr suppressed can be obtained when a rectangular container is trimmed. When a punch cutter 6 is initially allowed to cut into a rectangular tubular portion 10 of an untrimmed rectangular container 1a, the punch cutter 6 is inclined relative to a thickness direction of a cut area of the rectangular tubular portion 10, and then, the punch cutter 6 is circumferentially moved along a trim line TL on the rectangular tubular portion 10 to cut the rectangular tubular portion 10.
Claims16
A method for trimming a rectangular container,
- the method comprising:
- when initially allowing a punch cutter to cut into a rectangular tubular portion of the untrimmed rectangular container, inclining the punch cutter relative to a thickness direction of a wall portion of the rectangular tubular portion at a trim line on the rectangular tubular portion;
- and
- then circumferentially moving the punch cutter along the trim line on the rectangular tubular portion to cut the rectangular tubular portion.
An apparatus trimming a rectangular container,
- the apparatus comprising:
- a die cutter that surrounds an outer periphery of a product portion of a rectangular tubular portion of the untrimmed rectangular container;
- a mandrel that is disposed inside the product portion to sandwich the product portion between the mandrel and the die cutter;
- and
- a punch cutter that circumferentially moves along a circumference of the rectangular tubular portion relative to the die cutter and the mandrel to cut away a removal portion of the rectangular tubular portion, wherein
- when the punch cutter is initially allowed to cut into the rectangular tubular portion of the untrimmed rectangular container, the punch cutter is inclined relative to a thickness direction of a wall portion of the rectangular tubular portion at a trim line on the rectangular tubular portion;
- and
- then the punch cutter is circumferentially moved along the trim line on the rectangular tubular portion to cut the rectangular tubular portion.
Dependencies are inferred from the claim text.