The invention relates to the field of cold
machining equipment, in particular to a manufacturing method of a
petroleum oil
pipe. A plate rolling
machine adopted by the invention comprises a screw, a first support, a side plate, a nut, a sliding groove, vertical plates, roller shafts, a limiting structure, a
handle, a limiting block, a
pulley, a clamping sleeve, a pin, an anti-skid sleeve, a
crank,a first compression roller, a second compression roller, a tight locking nut, bearings, a positioning block, a second support, a feeding plate and a stop dog; according to the method, through the arrangement of the sliding groove in the side plate, the sliding groove is rotationally connected with the first support and the second support through the nut, the vertical plates are arranged at the top end of the side plate, and the vertical plates are arranged two, and the two vertical plates are symmetrically distributed; the roller shafts are rotationally connected with the vertical plates through the bearings, and three roller shafts are arranged; and one ends of the roller shafts are connected with the vertical plates, the clamping sleeve is rotationally connected with the
pulley throughthe pin, and the
pulley can guide and correct a coiled material. Through the manual rotation of the
crank to drive the roller shafts to rotate, a plate which can be conveniently rolled is facilitated,a first pressing roller and a second pressing roller sleeve the roller shafts, and
curling of different plates can be facilitated.