Follow-up shearing device of steel-bar straightener

Abstract

The invention discloses a random cutting mechanism for a bar straightener, which comprises a power unit, an eccentric mechanism connected with the power unit, a slide block connected with the eccentric mechanism in a way of moving up and down, a slide board cooperating matched with the slide block in a sliding way, and an oscillating arm connected with the slide board into a whole. A lower cutter is installed in the oscillating arm at the same level of the steel bar, and the steel bar passes through the inner hole of the lower cutter, the lower end of the oscillating arm is hinged at the bottom of a machine frame; and the lower part of the slide block is fixedly connected to the upper end of the upper cutter, the slide block extends out from the lower end of the upper cutter and slides along the end face of the lower cutter. The random cutting mechanism has the beneficial effects that the random cutting mechanism overcomes the defects of the prior art and utilizes the property of the rotation of the eccentric shaft to realize that the cutter moves along with the steel bar and cuts with of steel bar at the same speed. The random cutting mechanism has the advantages of simple structure, stable working performance, energy-saving, high production efficiency and good cutting effect.

Description

technical field [0001] The invention relates to a shearing mechanism of a steel bar straightening machine, in particular to a follow-up shearing mechanism of a steel bar straightening machine. Background technique [0002] At present, all steel bar straightening machines have a steel bar shearing mechanism. The types of shearing mechanisms in the prior art include: pneumatic clutch type shearing mechanism, electromagnetic clutch flying shear shearing mechanism, hammering type shearing mechanism and hydraulic shearing mechanism. mechanism. [0003] There are different shortcoming respectively in above-mentioned prior art shear mechanism: [0004] The disadvantage of the above-mentioned pneumatic clutch type shearing mechanism is: at the moment of shearing, the shearing mechanism limits the reinforcement to stop advancing, but the straightening mechanism does not stop running, so that the steel bars that stop running in the straightening cylinder and the straightening cylinde...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above-mentioned pneumatic clutch type shearing mechanism is: at the moment of shearing, the shearing mechanism limits the reinforcement to stop advancing, but the straightening mechanism does not stop running, so that the steel bars that stop running in the straightening cylinder and the straightening cylinder rotating at high speed produce a surface Friction, mechanical damage to steel bars

[0005] The above-mentioned electromagnetic clutch flying shear shearing mechanism relies on the friction plate of the electromagnetic clutch to control the action of the shearing mechanism. During the operation, the wear of the friction plate gradually increases, the shearing speed is not constant, and errors occur, resulting in low precision of the length of the sheared steel bar.

[0006] The above-mentioned hammer-type shearing mechanism and hydraulic shearing mechanism are not suitable for shearing steel bars of high-speed straightening machines.

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