Title (en)

Plugs for tube drawing machines

Title (de)

Ziehstopfen für Rohrzieh-maschinen

Title (fr)

Mandrins pour machines d'étirage de tubes

Publication

EP 0796676 A3 20000329 (DE)

Application

EP 97250083 A 19970319

Priority

DE 19612991 A 19960322

Abstract (en)

[origin: EP0796676A2] The short floating plug consists of hard metal and is used with a cylindrical guide section, removably fastened to it. The guide section (12) consists of a simpler material than the floating plug (11), e.g. of a plastics material. Its outer jacket surface (13) corresponds approximately to the internal diameter of the tube to be drawn. The plug surface is slightly conical against the drawing direction. The ring gap (15) thus formed is used for dosed supply of lubricant into the drawing area. The guide section is removably fastened to a reusable heat-resistant carrier, and this in turn is removably connected to the floating plug.

IPC 1-7

B21C 1/24; B21C 3/16

IPC 8 full level

B21C 1/24 (2006.01); B21C 3/16 (2006.01)

CPC (source: EP)

B21C 1/24 (2013.01); B21C 3/16 (2013.01)

Citation (search report)

• [X] US 4057992 A 19771115 - WILLIMZIK BERNHARD MAX
• [A] US 4745787 A 19880524 - SANSOME DENNIS H [GB], et al
• [A] GB 1432375 A 19760414 - STD SERVICES LTD
• [DX] DE 3405641 A1 19850822 - SCHUMAG GMBH [DE]
• [DA] DE 2623385 A1 19771215 - KABEL METALLWERKE GHH
• [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 148 (M - 812) 11 April 1989 (1989-04-11)

Designated contracting state (EPC)

BE DE ES FI FR GR IT

DOCDB simple family (publication)

EP 0796676 A2 19970924; EP 0796676 A3 20000329; DE 19612991 A1 19971002

DOCDB simple family (application)

EP 97250083 A 19970319; DE 19612991 A 19960322