Height adjustment apparatus for a can body

Patent metadata

Field	Value
Publication number	US-9700948-B2
Application number	US-201514849048-A
Country	US
Kind code	B2
Filing date	Sep 9, 2015
Priority date	Sep 9, 2014
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A height adjustment apparatus that can reduce a load to trim a can body is provided. The height adjustment apparatus 1 is adapted to adjust a height of a can body to a desired height by trimming one of opening ends of the can body. The height adjustment apparatus comprises: mandrels on which the can body is individually mounted and which revolve along a predetermined orbit while rotating; outer blades arranged around the revolution orbit of the mandrels; an inner blade fitted onto each mandrel to trim the opening end of the can body together with the outer blade; and a vertical reciprocator that gradually changes a level of the opening end of the can body with respect to a level at which the outer blade and the inner blade are situated from an upstream side toward a downstream side in a revolution direction of the mandrel.

First claim

What is claimed is:

1. A height adjustment apparatus for adjusting a height of a cylindrical can body to a desired height by trimming one of opening ends of the can body, comprising:
a plurality of mandrels on which the can body is individually mounted and which revolve along a predetermined orbit while rotating;
a plurality of outer blades arranged around the revolution orbit of the mandrels;
an inner blade fitted onto each mandrel to trim the opening end of the can body together with the outer blade; and
a vertical reciprocator that gradually changes a level of the opening end of the can body with respect to a level at which the outer blade and the inner blade are situated from an upstream side toward a downstream side in a revolution direction of the mandrel.

2. The height adjustment apparatus as claimed in claim 1 ,
wherein the outer blades are situated at a same level around the revolution orbit of the mandrels;
wherein a level of each of the inner blade fitted onto the mandrel is adjusted to the same level as the outer blades to be opposed thereto; and
wherein the vertical reciprocator is adapted to situate the opening end of the can body at a highest position within a range to be trimmed by the outer blade of the most upstream side, and to situate the opening end of the can body at a lowest position within a range to be trimmed by the outer blade of the most downstream side.

3. The height adjustment apparatus as claimed in claim 1 , wherein the vertical reciprocator includes a cylindrical cam adapted to vertically reciprocate the can body by a rotational motion thereof.

Assignees

• Daiwa Can Co Ltd

Inventors

• Kawazoe Akira

Classifications

• B21D51/26

  cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K) · CPC title

• B23D31/001 Primary

  for trimming deep drawn products (combined with deep-drawing presses B21D24/16) · CPC title