# US 9,873,145 B2 · Can-manufacturing device

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- Number: US 9,873,145 B2
- Document ID: US9873145B2
- Status: Granted
- Kind: B2
- Application number: 14/370,304
- Filed: 2013-02-05
- Published: 2015-01-15
- Granted: 2018-01-23
- Earliest claimed: 2012-02-09
- Assignees: Universal Can Corporation
- Applicants: Universal Can Corporation
- Inventors: Masahiro Hosoi; Atsushi Yamashita
- Web page: https://patentgrep.com/patent/US9873145B2

## CPC

- B21D 22/26: for making peculiarly, e.g. irregularly, shaped articles
- B21D 51/26: cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K)
- B21D 51/2638: {Necking}
- B21D 51/2669: {Transforming the shape of formed can bodies; Forming can bodies from flattened tubular blanks; Flattening can bodies}
- B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F)

## Abstract

To provide a variant-can having a narrow part in the vicinity of a bottom part by performing a diameter-reduction process up to the vicinity of the bottom part on a trunk part of a can-body made of metal in a can-manufacturing device which processes the can-body being held by a pocket-shaped conveying part while conveying. It is provided with: a can-body pocket which holds a can-body by being in contact with a part of an outer circumference surface of a trunk part of the can-body; a base pad which presses a bottom part of the can-body along a can-axis direction; a die in which the trunk part of the can-body is press-inserted; and a clamping ring which protrudes from the base pad toward the die and is provided so as to move back and forth along the can-axis direction.

## Claims

### Claim 1

A can-manufacturing device performing a diameter-reduction process on a trunk part of a can-body having a closed-end cylindrical shape with an open end, comprising:
a can-body pocket which holds the can-body by being in contact with a part of an outer circumference surface of a trunk part of the can-body;
a base pad which presses a bottom part of the can-body along a can-axis direction of the can-body by advancing and retreating along the can-axis direction with respect to the can-body pocket;
a die which is disposed to face the base pad along the can-axis direction interposing the can-body pocket therebetween so as to perform a diameter-reduction process on the trunk part by press-inserting the trunk part of the can-body along the can-axis direction; and
a clamping ring which protrudes from the base pad toward the die and is provided so as to move back and forth along with the base pad along the can-axis direction with respect to the can-body pocket, the device wherein:
the can-body pocket has a plurality of holding surfaces extending in the can-axis direction along the trunk part of the can-body and being separated circumferentially from each other along the outer circumference surface; and
the clamping ring has a plurality of arc-shaped clamping surfaces extending in the can-axis direction along the trunk part of the can-body and being inserted and extracted between the holding surfaces,
so that a clamping surface is formed to clamp the outer circumference surface around substantially whole circumference in the vicinity of the bottom part of the can-body held by the can-body pocket by inserting the arc-shaped clamping surface of the clamping ring between the holding surfaces of the can-body pocket.

### Claim 2 (depends on 1)

The can-manufacturing device according to claim 1, wherein the base pad and the clamping ring are provided so as to move relatively along the can-axis direction.

### Claim 3 (depends on 2)

The can-manufacturing device according to claim 2, wherein an energizing member which energizes and advances the clamping ring forwardly is attached with respect to the base pad along the can-axis direction.