Title:
DOUBLE ACTION EXTRUSION PRESS
Document Type and Number:
WIPO Patent Application WO/2014/188741
Kind Code:
A1
Abstract:
A double action extrusion press has: a main crosshead provided freely movable with the application of pressure in an axial direction by a main cylinder and having a pressing system disposed on the tip thereof; and a piercer cylinder built into the main cylinder and provided within the main ram, allowing a mandrel to slide within the pressing system and the main crosshead. The double action extrusion press complements the extrusion force by force equivalent to a mandrel pull force acting on a mandrel stop rod by affixing the piercer cylinder in contact to a piercer crosshead that is joined with the mandrel stop rod and applying hydraulic force to the rod side of the piercer cylinder.
Inventors:
YAMAMOTO TAKEHARU (JP)
Application Number:
PCT/JP2014/052433
Publication Date:
November 27, 2014
Filing Date:
February 03, 2014
Export Citation:
Assignee:
UBE MACHINERY CORP LTD (JP)
International Classes:
B21C23/08; B21C25/04; B21C31/00
Foreign References:
| JPS61147916A | 1986-07-05 | |||
| JPS61205606U | 1986-12-25 | |||
| FR1069436A | 1954-07-07 | |||
| JP2007517669A | 2007-07-05 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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