A kind of segmental flying shear for finished bar products with anti-bending devices at both ends of the shearing point

Abstract

The invention discloses a pair of small-sized finished bar segmenting flying shears with a device for preventing two ends at a shearing point from bending. The pair of flying shears comprises an upper shear arm, a lower shear arm, an upper blade, a lower blade, an upper shear arm baffle and a lower shear arm baffle, wherein the end parts of the upper shear arm and the lower shear arm are L-shaped; the upper blade and the lower blade are mounted against vertical surfaces of the L-shaped end parts respectively; the upper shear arm baffle and the lower shear arm baffle are mounted against horizontal surfaces of the L-shaped end parts respectively; the upper blade and the lower blade rotate to shearing positions to form the shearing point; and the rotary radius at any point on the upper shear arm baffle and the lower shear arm baffle is not greater than the rotary radius at the shearing point and is not less than the difference between the rotary radius at the shearing point and the diameter of a shorn bar. According to the pair of flying shears, through the device for preventing the two ends at the shearing point from bending, after shearing is finished, the upper shear arm baffle and the lower shear arm baffle prevent the hear part and the tail part of the bar from quick upward and downward impact movements during rotary motion so as to avoid the bending of the head part and the tail part of the high-temperature bar.

Description

technical field [0001] The invention belongs to the field of bar hot rolling machinery and equipment, and particularly relates to a segmental flying shear for small finished bar products with anti-bending devices at both ends of a shear point. Background technique [0002] The production of hot-rolled small bars generally adopts continuous casting billets and is continuously rolled into the required product specifications. For products that need to be delivered in straight bars, after rolling, they need to be divided into sections by flying shears, cooled by a cooling bed, and cut to length. , Bundling, packaging and bundling, weighing and other process links. Among them, the high-precision shearing control of segmented flying shears for finished bar products has always been a hot and difficult research point in the industry. With the successful application of start-stop flying shears, great progress has been made in shearing accuracy and control level. However, due to Due ...

AI Technical Summary

Problems solved by technology

The deformation of the front and rear ends of the bar at the shear point is intensified, which increases the subsequent head and tail shear and affects the yield

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