Clamping seat of drawing machine and clamping method

Abstract

The invention discloses a clamping seat of a drawing machine, and relates to the technical field of steel pipe clamping. The clamping seat of the drawing machine comprises a drawing clamping seat body, wherein the drawing clamping seat body comprises a clamping piece, a sliding block, an angle folding piece, a telescopic device, a rotating cylinder, ejecting pieces, a rack, a toggle assembly and auxiliary clamping pieces. A long groove is formed in the clamping piece, and a sliding groove is formed in the sliding block. Both ends of the angle folding piece are separately connected with the long groove and the sliding groove. The telescopic device comprises a telescopic rod, and the telescopic rod is provided with a connecting piece. The rotating cylinder is movably connected with the sliding block. The rotating cylinder comprises a storage space and an annular groove, wherein the storage space contains a telescopic rod, and the annular groove is connected with the connecting piece. Theejecting pieces are connected with the outer diameter of the rotating cylinder. The toggle assembly meshes with the rack. The auxiliary clamping pieces are connected with toggle units. According to the clamping seat of the drawing machine, the clamping piece is firstly adopted to clamp a necking part of a steel pipe before drawing, and then the auxiliary clamping pieces are adopted to clamp the steel pipe when the speed is not increased in the process of just drawing, so that the contact area between the drawing clamping seat body and the steel pipe is increased, and the steel pipe is prevented from being damaged after the drawing speed is increased.

Description

technical field [0001] The invention relates to the technical field of steel pipe clamping, in particular to a clamp seat of a drawing machine. Background technique [0002] Drawing is one of the main production methods for tubes, profiles, rods and wires. Before the drawing machine is drawn, the steel pipe 4 needs to shrink the head, such as figure 1 As shown, firstly, the steel pipe 4 at the unretracted end is introduced onto the traction mechanism 3, and then the steel pipe 4 on the traction mechanism 3 is pushed into the mold 5 by the first conveying device 2 in the base 1, so that the steel pipe 4 is retracted. One end passes through the mold and moves into the clamping seat 6, and the steel pipe 4 is clamped and fixed by the clamping seat 6, and finally the second conveying device 7 is used to move the clamping seat 6, so that the unretracted part of the steel pipe 4 is squeezed with the mold 5 to obtain The same predetermined shape (outer diameter, inner diameter, w...

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