Nippon Steel Corporation

Toyota Jidosha Kabushiki Kaisha

Hiroo Ishibashi

Tsutomu Haeno

Hiroshi Fukuchi

Yoshiaki Kadoma

Hiroyuki Mitake

Kazuyuki Kawano

Koichi Hiramatsu

Yasuo Hamamoto

Itsuro Hiroshige

Osamu Honda

Takuro Hosojima

Shinichiro Tomino

Ken Minato

Kouichi Sato

Kyoichi Mano

Kiyoshi Uda

Shizuo Kohinata

This invention provides a bending roll apparatus capable of preventing barrel-like deformation of a pipe occurring during a roll bending work and of manufacturing a small diameter elongated pipe. In an apparatus for manufacturing a pipe by pushing rolls to a core roll, feeding a metal sheet to their contact portions and performing a bending work, the bending roll apparatus comprises a core roll formed of a metal and a plurality of push rolls having a surface portion thereof formed of an elastic material and disposed around the core roll. The invention further provides, in a bending roll apparatus, a core roll formed of a metal, a plurality of push rolls formed of a metal and disposed around the core roll, and holding the core roll when a metal sheet is bent, and a guide belt formed of an elastic material, interposed between the core roll and each of the push rolls, contacting on a core roll surface on a side opposite to an entry side of the metal sheet and driven in synchronism with the core roll.

Bending roll apparatus

A mold clamping apparatus includes a frame including a holding portion for holding a mold and an open portion allowing the mold to be inserted into/taken out from the holding portion in a direction of the longer side of the mold, a mold moving device for moving the mold to insert/take out the mold into/from the holding portion through the open portion in the frame, and a mold opening/closing device for opening/closing the mold located outside the frame. This mold clamping apparatus is capable of holding the mold securely in a closed state resisting a pressure acting to open the mold and allows reduction of energy consumption, equipment maintenance cost, production cost, and the size thereof.

Mold clamping apparatus and mold clamping method

Widthwise uniform cooling system for steel strip in continuous steel

Growing community of inventors

Kisarazu, Japan

Hiroo Ishibashi