Expansion and shrinkage seamless recoiling machine of radial oil cylinders of twenty-high roll steel plate cold rolling mill

Abstract

The invention belongs to the field metallurgical equipment, in particular to an expansion and shrinkage seamless recoiling machine of radial oil cylinders of a twenty-high roll steel plate cold rolling mill. The recoiling machine is characterized in that four radial oil cylinders are radially distributed by a revolution main shaft in a four-leaved block in a way that the four radial oil cylinders are vertical with each other; the four-leaved boosting pistons of the four radial oil cylinders are radially connected with telescopic oblique blocks; the triangular oblique planes of the telescopic oblique blocks form interval connection with the four-leaved block; the four-leaved boosting pistons make telescopic movement after pressure oil respectively enters the four radial oil cylinders, the four-leaved boosting pistons drive the connected oblique blocks to also make the telescopic movement, and then the four telescopic oblique blocks push the four-leaved block to be expanded and shrunk, and meanwhile, under the action of the four-leaved boosting pistons, the four-leaved block is smoothly retracted and forms gaps with coiled stocks, which is beneficial to debatching. The invention provides the expansion and shrinkage seamless recoiling machine of the radial oil cylinders of the twenty-high roll steel plate cold rolling mill, with good processing manufacturability, high precision, flexible movement, convenient use and long service life.

Description

technical field [0001] The invention belongs to the field of metallurgical equipment, in particular to a radial oil cylinder expansion and contraction seamless coiler of a 20-high cold rolling mill, which is used in the coiling system of a 20-high cold rolling mill to complete the rolling process High-precision coiling of center-to-plate strip. Background technique [0002] The existing 20-high cold rolling mill strip coilers all adopt the axial oil cylinder type coiler, the piston rod moves axially and drives the inclined block rod to cooperate with the inclined surface on the four-lobe block to frictionally move, so that the four The petals expand and contract. Since the matching inclined surface has to bear the radial force on the four-petal block at the same time, it operates under pressure, and the wear on the inclined surface is very serious. During work, there are often abrasions and jamming phenomena, and the movement is inflexible or even cannot work normally. How...

AI Technical Summary

Problems solved by technology

Since the matching inclined surface has to bear the radial force on the four-petal block at the same time, the wear on the inclined surface is very serious when it is operated under pressure. There are often abrasions and jams during work, and the movement is inflexible or even cannot work normally.

However, the processing technology of the inclined plane of the four-petal block is complicated, the processing is difficult, and the processing accuracy cannot be guaranteed. After assembly, the external support of the four-petal block is difficult to achieve concentricity with the center of the rotary shaft. Therefore, there is a large amount of circumferential runout during the rotation of the coiler. The linear speed of coiling during work fluctuates greatly, which affects the product quality, and even breaks the product, which seriously affects the service life of the coiler

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