Forming device

Patent metadata

Field	Value
Publication number	US-10751780-B2
Application number	US-201715717758-A
Country	US
Kind code	B2
Filing date	Sep 27, 2017
Priority date	Mar 31, 2015
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

A forming device that forms a metal pipe by blow forming includes: a gas supply part that supplies a gas to a metal pipe material to expand the metal pipe material; a die attachment part to which a die that is brought into contact with the expanded metal pipe material to form the metal pipe is attached; a gas discharge part that discharges the gas from the metal pipe material; and a pressure detector that detects a pressure of the gas, the gas supply part includes a gas compression part that compresses the gas, and a supply line that transfers the gas compressed by the gas compression part to the metal pipe material, the gas discharge part includes a discharge line that transfers the discharged gas, and the pressure detector is provided in each of the supply line and the discharge line.

First claim

What is claimed is:

1. A forming device that forms a metal pipe by blow forming, the device comprising:
a gas supply part configured to supply a gas to a metal pipe material to expand the metal pipe material;
a die attachment part to which a die that is brought into contact with the expanded metal pipe material to form the metal pipe is attached;
a gas discharge part configured to discharge the gas from the metal pipe material; and
a supply-side pressure detector configured to detect a pressure of the gas,
wherein the gas supply part includes:
a gas compression part configured to compress the gas, and
a supply line configured to transfer the gas compressed by the gas compression part to the metal pipe material, the supply line includes a first supply line and a second supply line configured to transfer the gas to the metal pipe material,

wherein the supply-side pressure detector is provided in the supply line,
wherein the gas discharge part includes:
a discharge line configured to transfer the discharged gas from the metal pipe material, the discharge line includes a first discharge line and a second discharge line configured to transfer the gas discharged from the metal pipe material, and

wherein a discharge-side pressure detector is provided in each of the first discharge line and the second discharge line.

2. The forming device according to claim 1 , further comprising:
a controller configured to control discharge of the gas by the gas discharge part,
wherein in a case where the pressure of the gas in the supply line detected by the supply-side pressure detector is equal to or higher than a threshold, the controller adjusts an amount of the gas to be discharged by the gas discharge part.

3. A forming device that forms a metal pipe by blow forming, the device comprising:
a gas supply part configured to supply a gas to a metal pipe material to expand the metal pipe material;
a die attachment part to which a die that is brought into contact with the expanded metal pipe material to form the metal pipe is attached;
a gas discharge part configured to discharge the gas from the metal pipe material; and
a supply-side pressure detector configured to detect a pressure of the gas,
wherein the gas supply part includes:
a gas compression part configured to compress the gas, and
a supply line configured to transfer the gas compressed by the gas compression part to the metal pipe material, the supply line includes a first supply line and a second supply line configured to transfer the gas to the metal pipe material,

wherein the supply-side pressure detector is provided in each of the first supply line and the second supply line,
wherein the gas discharge part includes:
a discharge line configured to transfer the discharged gas from the metal pipe material, the discharge line includes a first discharge line and a second discharge line configured to transfer the gas discharged from the metal pipe material,

wherein a discharge-side pressure detector is provided in each of the first discharge line and the second discharge line.

4. A forming device that forms a metal pipe by blow forming, the device comprising:
a gas supply part configured to supply a gas to a metal pipe material to expand the metal pipe material;
a die attachment part to which a die that is brought into contact with the expanded metal pipe material to form the metal pipe is attached;
a gas discharge part configured to discharge the gas from the metal pipe material; and
a supply-side pressure detector configured to detect a pressure of the gas,
wherein the gas supply part includes:
a gas compression part configured to compress the gas, and
a supply line configured to transfer the gas compressed by the gas compression part to the metal pipe material,

wherein the supply-side pressure detector is provided in the supply line,
wherein the gas discharge part includes:
a discharge line configured to transfer the discharged gas from the metal pipe material, and

wherein a discharge-side pressure detector is provided in the discharge line, the discharge-side pressure detector is configured to detect a pressure of the gas in the discharge line.

Assignees

• Sumitomo Heavy Industries

Inventors

• SAIKA Masayuki
• Ishizuka Masayuki
• UENO Norieda

Classifications

• B21D26/027

  Means for controlling fluid parameters, e.g. pressure or temperature · CPC title

• B21D26/033

  Deforming tubular bodies (corrugating tubes by applying fluid pressure B21D15/03, B21D15/10) · CPC title

• B21D26/041

  Means for controlling fluid parameters, e.g. pressure or temperature · CPC title

• B21D26/047 Primary

  Mould construction (B21D26/037 - B21D26/045 take precedence) · CPC title