The steel
pipe clamping jaw mechanism comprises an oil cylinder
assembly, the oil cylinder
assembly comprises an oil cylinder, an oil cylinder
piston rod, an oil cylinder base and an oil cylinder connecting piece, the oil cylinder is connected with the oil cylinder base through the oil cylinder connecting piece, and the oil cylinder base is fixedly arranged on a cold-drawing
machine trolley; the plug
assembly comprises a plug and a plug positioning connecting rod, the plug positioning connecting rod is connected with the oil cylinder
piston rod, and the plug is fastened on the plug positioning connecting rod; the
flange plate is fixedly connected to the oil cylinder
piston rod, a plurality of U-shaped grooves are formed in the
flange plate, and
forceps holders are connected into the U-shaped grooves; the taper sleeve is fixedly arranged on the cold-drawing
machine trolley, and the taper sleeve is provided with an inclined surface and is used for guiding the
forceps holder to move inwards. The steel
pipe clamping jaw mechanism of the cold-drawing
machine is simple in structure, firm and durable, the
conical surface locking principle is utilized, the clamping force is increased along with steel
pipe drawing, and steel pipe bending and stub bar tearing caused by uneven clamping force are avoided.