# US 12,179,250 B2 · Die

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- Number: US 12,179,250 B2
- Document ID: US12179250B2
- Status: Granted
- Kind: B2
- Application number: 17/795,390
- Filed: 2021-03-19
- Published: 2023-05-18
- Granted: 2024-12-31
- Earliest claimed: 2020-03-26
- Assignees: Nippon Steel Corporation
- Applicants: Nippon Steel Corporation
- Inventors: Naruhiko Nomura; Toshiya Suzuki; Kenta Uenishi; Tohru Yoshida
- Web page: https://patentgrep.com/patent/US12179250B2

## CPC

- B21D 22/208: {by heating the blank or deep-drawing associated with heat treatment (C21D takes precedence)}
- B21D 37/10: Die sets; Pillar guides
- B21D 37/04: Movable or exchangeable mountings for tools
- B21D 37/16: Heating or cooling
- B21D 53/88: other parts for vehicles, e.g. cowlings, mudguards
- 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

The die includes a die base, a die body, and an opening/closing member. In the die base, a storage portion for storing refrigerant is formed. The die body includes a mounting surface, a forming surface, and a plurality of flow channels. The mounting surface is located on the storage portion side of the die base. The forming surface is located on the opposite side of the mounting surface. The flow channels pass through the die body from the mounting surface to the forming surface. The opening/closing member is disposed between the die base and the die body. The opening/closing member includes a plurality of through holes corresponding to the plurality of flow channels. The opening/closing member is configured to be movable with respect to the die base and the die body such that each of the through holes brings the corresponding flow channel and the storage portion into communication.

## Claims

### Claim 1

A die, comprising:
a die base including a storage portion for storing refrigerant formed therein;
a die body mounted to the die base, the die body including a mounting surface located on the storage portion side of the die base, a forming surface located on the opposite side of the mounting surface, and a plurality of flow channels passing through the die body from the mounting surface toward the forming surface;
an opening/closing member disposed between the die base and the die body, and including a plurality of through holes corresponding to the plurality of flow channels; and
refrigerant pressure feeding means configured to supply the refrigerant to the storage portion, wherein
the opening/closing member is configured to be movable with respect to the die base and the die body such that each of the through holes brings a corresponding flow channel and the storage portion into communication.

### Claim 2 (depends on 1)

The die according to claim 1, wherein
the opening/closing member has a plate shape, and slides with respect to the die base and the die body.

### Claim 3 (depends on 2)

The die according to claim 2, wherein
the plurality of through holes include a first through hole and a second through hole, and
a width of the second through hole is larger than a width of the first through hole in a sliding direction of the opening/closing member and/or a direction perpendicular to the sliding direction.

### Claim 4 (depends on 2)

The die according to claim 2, wherein
the opening/closing member slides in two axial directions with respect to the die base and the die body.

### Claim 5 (depends on 1)

The die according to claim 1, wherein
the storage portion comprises a plurality of grooves, and
the plurality of grooves are in communication with each other.

### Claim 6 (depends on 3)

The die according to claim 3, wherein
the opening/closing member slides in two axial directions with respect to the die base and the die body.

### Claim 7 (depends on 2)

The die according to claim 2, wherein
the storage portion comprises a plurality of grooves, and
the plurality of grooves are in communication with each other.

### Claim 8 (depends on 3)

The die according to claim 3, wherein
the storage portion comprises a plurality of grooves, and
the plurality of grooves are in communication with each other.

### Claim 9 (depends on 4)

The die according to claim 4, wherein
the storage portion comprises a plurality of grooves, and
the plurality of grooves are in communication with each other.

### Claim 10 (depends on 6)

The die according to claim 6, wherein
the storage portion comprises a plurality of grooves, and
the plurality of grooves are in communication with each other.