Telescopic clamp for cold drawn pipe

The utility model discloses a telescopic clamp of a cold drawn pipe, which comprises a die holder and a clamping piece, the die holder is a hollow steel member, a taper hole is arranged in the center of a die holder body, and one part of the clamping piece is inserted into the taper hole from the big end of the taper hole; the clamping piece comprises a push block and clamping blocks installed on the push block, and the three clamping blocks are installed on the push block at the interval of 1200 degrees on the circumference. The rear end of the clamping block is hung at the front end of the push block, and the clamping block and the push block are connected through a spring in the radial direction. And the clamping surface of the clamping block is an arc-shaped surface. 本实用新型公开了一种冷拔管的伸缩式夹具，包括模座和夹紧件，其中：模座为空心钢制构件，模座本体中心开有一个锥形孔，夹紧件的一部分从锥形孔的大头端插入在锥形孔中；夹紧件包括推块和安装在推块上的夹块，3个夹块在圆周上间隔1200安装在推块上；夹块后端挂在推块前端上，夹块与推块之间在径向上通过弹簧连接；夹块的夹持面为弧形面。