Hot-press device

Patent metadata

Field	Value
Publication number	US-11820093-B2
Application number	US-202016825108-A
Country	US
Kind code	B2
Filing date	Mar 20, 2020
Priority date	Dec 25, 2017
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

A hot-press device includes: a heating furnace; a pair of punches which includes an upper punch and a lower punch provided in the heating furnace and vertically facing each other; a lower press ram which is connected to a lower surface of the lower punch; an upper press ram which is connected to an upper surface of the upper punch; and a pressing device which is connected to any one or both of the lower press ram and the upper press ram and presses the punch so that the pair of punches are close to each other, in which the lower press ram and/or the upper press ram includes a plurality of individual press rams which are disposed at intervals, each individual press ram having one end coupled to the pair of punches.

First claim

What is claimed is:

1. A hot-press device comprising:
a heating furnace;
an extensible portion which is extensible;
a pair of punches which includes an upper punch and a lower punch provided in the heating furnace and vertically facing each other;
a lower press ram which is connected to a lower surface of the lower punch;
an upper press ram which is connected to an upper surface of the upper punch; and
a pressing device which is connected to any one or both of the lower press ram and the upper press ram and presses the pair of punches such that the pair of punches are close to each other,
wherein the lower press ram and the upper press ram or the lower press ram or the upper press ram includes a plurality of individual press rams which are disposed at intervals, each of the plurality of individual press rams having one end coupled to the pair of punches,
wherein the upper press ram comprises:
a single main press ram which is provided on a side of the pressing device; and
a coupling member which couples the plurality of individual press rams and the main press ram to each other, and

wherein the extensible portion surrounds the main press ram and a lower end of the extensible portion is connected to an upper end of the heating furnace and an upper end of the extensible portion is fixed.

2. The hot-press device according to claim 1 ,
wherein each of the upper punch and the lower punch includes a pressing surface which abuts an object to be treated and a rear surface opposite to the pressing surface, the object to be treated being disposed between the upper punch and the lower punch, the pressing surface and the rear surface being rectangular, and
wherein the plurality of individual press rams are disposed at a center of the rear surface and locations closer to four vertexes of the rear surface than middle portions between the four vertexes and the center.

3. The hot-press device according to claim 1 ,
wherein each of the upper punch and the lower punch includes a pressing surface which abuts an object to be treated and a rear surface opposite to the pressing surface, the object to be treated being disposed between the upper punch and the lower punch, the pressing surface and the rear surface being circular, and
wherein the plurality of individual press rams are disposed at a center of the rear surface and at a plurality of equiangular positions around the center at locations closer to a peripheral edge of the rear surface than middle portions between the center and the peripheral edge of the rear surface.

4. The hot-press device according to claim 1 ,
wherein the heating furnace includes:
a furnace body;
a heat insulating container which is provided in the furnace body and accommodates the pair of punches; and
a heating element which is provided around the pair of punches in the heat insulating container,

wherein the heat insulating container includes a plurality of openings through which the plurality of individual press rams are inserted.

Assignees

• Ihi Corp
• Ihi Machinery & Furnace Co Ltd

Inventors

• Tanaka Toshiro
• Kawamoto Hideki
• Yoshida Takuma
• Konishi Hiroyuki

Classifications

• B30B11/02 Primary

  using a ram exerting pressure on the material in a moulding space · CPC title

• B22F3/03 Primary

  Press-moulding apparatus therefor · CPC title

• B30B15/065

  Press rams · CPC title

• B30B15/34

  Heating or cooling presses or parts thereof · CPC title

• B22F2003/031

  with punches moving in different directions in different planes · CPC title