Title:
APPARATUS AND METHOD FOR DRAWING METAL TUBE
Document Type and Number:
WIPO Patent Application WO/2011/021621
Kind Code:
A1
Abstract:
In an apparatus for drawing a metal tube, in which a lubricant is discharged from an opening formed in a hollow rod which supports a plug to apply the lubricant onto an inner surface of a tube blank, the lubricant discharging sensitivity when a discontinuous lubricant supply is performed is enhanced. In a drawing apparatus in which a metal tube blank (2) is machined by passing the same between a die (10) for forming an outer surface and a plug (11) for forming an inner surface, a discharge port (21) from which a lubricant (L) is discharged opens onto an outer peripheral surface of a hollow rod (20) which supports the plug (11). The discharge port (21) is provided only in an area of the rod (20) higher than the center thereof in the upward and downward directions.
Inventors:
YAMAMOTO Manabu (SHOWA DENKO K.K. 480, Inuzuka 1-chome, Oyama-sh, Tochigi 78, 〒3238678, JP)
山本 学 (〒78 栃木県小山市犬塚１丁目４８０番地 昭和電工株式会社小山事業所内 Tochigi, 〒3238678, JP)
HARIGAE Isao (SHOWA DENKO K.K. 480, Inuzuka 1-chome, Oyama-sh, Tochigi 78, 〒3238678, JP)
山本 学 (〒78 栃木県小山市犬塚１丁目４８０番地 昭和電工株式会社小山事業所内 Tochigi, 〒3238678, JP)
HARIGAE Isao (SHOWA DENKO K.K. 480, Inuzuka 1-chome, Oyama-sh, Tochigi 78, 〒3238678, JP)
Application Number:
JP2010/063854
Publication Date:
February 24, 2011
Filing Date:
August 17, 2010
Export Citation:
Assignee:
SHOWA DENKO K.K. (13-9, Shiba Daimon 1-chome Minato-k, Tokyo 18, 〒1058518, JP)
昭和電工株式会社 (〒18 東京都港区芝大門一丁目１３番９号 Tokyo, 〒1058518, JP)
YAMAMOTO Manabu (SHOWA DENKO K.K. 480, Inuzuka 1-chome, Oyama-sh, Tochigi 78, 〒3238678, JP)
山本 学 (〒78 栃木県小山市犬塚１丁目４８０番地 昭和電工株式会社小山事業所内 Tochigi, 〒3238678, JP)
昭和電工株式会社 (〒18 東京都港区芝大門一丁目１３番９号 Tokyo, 〒1058518, JP)
YAMAMOTO Manabu (SHOWA DENKO K.K. 480, Inuzuka 1-chome, Oyama-sh, Tochigi 78, 〒3238678, JP)
山本 学 (〒78 栃木県小山市犬塚１丁目４８０番地 昭和電工株式会社小山事業所内 Tochigi, 〒3238678, JP)
International Classes:
B21C3/16; B21C1/22; B21C9/00
Attorney, Agent or Firm:
SHIMIZU Yoshihito et al. (Idemitsu Nagahori Building, 4-26 Minamisemba 3-chome, Chuo-ku, Osaka-sh, Osaka 81, 〒5420081, JP)