Numerical control precise four-stage rolling mill for ore screen machining

Abstract

The invention relates to the technical field of ore screen machining, in particular to a numerical control precise four-stage rolling mill for ore screen machining, which comprises a track, a wire releasing frame and an electric control cabinet, the wire releasing frame, a first-stage rolling mill, a second-stage rolling mill, a third-stage rolling mill and a fourth-stage rolling mill are sequentially mounted at the upper end of the track from left to right, and a rotating shaft is mounted at the upper end of the wire releasing frame through a bearing seat. A plurality of round rods are fixed to the outer wall of the rotating shaft, overspeed prevention assemblies are installed at the outer ends of the round rods correspondingly, a rotating disc is fixed to the top end of the rotating shaft, a ratchet ring is fixed to the outer wall of the rotating disc, a fixed shaft is fixed to the upper end of the rotating disc, a circular ring block is further fixed to the upper surface of the wire releasing frame, and a plurality of pawls are hinged to the inner wall of the periphery of the circular ring block. The back faces of the pawls abut against leaf springs. The raw material metal wire can stably enter the rolling mill, and normal wire discharging is ensured; and the rotating disc can only rotate in one direction, and the rotation phenomenon is avoided.

Description

technical field [0001] The invention relates to the technical field of mine screen processing, in particular to a numerically controlled precision four-rolling mill for mine screen processing. Background technique [0002] Mine screen is a metal mesh structure element used for sieving and filtering. Applied to screening, filtration, dehydration, desliming and other operations. It has high strength, rigidity and bearing capacity, and can be made into rigid screening and filtering devices of various shapes, which are easy to leak, wear-resistant and corrosion-resistant. The cross-section of the mesh is trapezoidal, and the gap is narrow at the top and wide at the bottom. Among them, the rolling mill is a common equipment in the production and processing of mine screens. The rolling mill deforms the metal material through strong pressure to obtain the required shape of the material. At the same time, the internal residual stress and stress concentration can be eliminated duri...

AI Technical Summary

Problems solved by technology

The structures of flat rolling units I, III and vertical rolling units II and IV are exactly the same, and the speeds of each unit are different. They are distributed by pass according to the total elongation coefficient of the rolled piece με=2.5-2.7, and the roll line speed of each unit is adapted to it. But this prior art still has some deficiencies, for example: the raw metal wire is pulled out from the wire reel and enters the inside of the rolling mill, and the wire reel is often subject to a stronger pulling force, especially when the rolling mill is just started, the wire reel is subjected to The force will rotate a lot of times, so that the raw metal wire will be pulled out a large section, so that it is easy to wrap around other structures, bringing safety hazards. At the same time, the raw metal wire will fall on the ground under its own gravity, stained Dust affects the subsequent rolling quality; the wire coil often rotates back and forth, which will cause the raw metal wire to shake back and forth, which is not conducive to the wire feeding operation of the rolling mill

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