Steel pipe cold-drawing mould

• Main Authors: PAN XIAOYU, PAN YIZHONG
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2014
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The utility model provides a steel pipe hot-pressing mould which comprises an inner mould and an outer mould, wherein the outer mould is installed on a cold-drawing machine by means of a fixing base of a cold-drawing machine outer mould, a taper hole reducing belt is arranged at the front end of an inner hole of the outer mould, a circular hole setting belt is arranged at the rear end of the inner hole of the outer mould; the inner mould is inserted into a hole of the outer mould and comprises a plurality of groups of corresponding reducing setting belts, the inner mould is connected with a fixing base of a cold-drawing machine pulling rod by virtue of a pulling rod assembly; and a to-be-pulled blank passes through a gap between the inner mould and the outer mould. The steel pipe hot-pressing machine is characterized in that the pulling rod assembly comprises a connecting lead screw and a bolt with a fixed nut at the end part, which are fixed by means of a thread, and each reducing setting belt of the inner m