Molding device and molding method

• Main Authors: ISHIZUKA MASAYUKI, UENO NORIEDA, SAIKA MASAYUKI, NOGIWA KIMIHIRO
• Format: Patent
• Language: Chinese; English
• Published: 03.09.2021
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PIPES; PUNCHING METAL; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

According to the invention, a forming device forms a metal pipe with a pipe part. The molding device is provided with: a first mold and a second mold which are paired with each other and which, when the molds are closed, form a first cavity section for molding a pipe section and a second cavity section which communicates with the first cavity section and which is for molding a flange section of a metal pipe; a drive mechanism that moves at least one of the first mold and the second mold in a direction in which the first mold and the second mold are brought together; and a gas supply unit that supplies a gas into the metal pipe material that is held between the first mold and the second mold and that has been heated, the first mold and the second mold facing each other and each having a flange molding surface that constitutes a second cavity. On at least one of the flange molding surface of the first mold and the flange molding surface of the second mold, a protruding portion protruding further toward the othe