Wire tensioning mechanism for wire cutting machine tool

Abstract

The invention discloses a wire tensioning mechanism for a wire cutting machine tool. The wire tensioning mechanism comprises a wire cylinder, a first bridge guide wheel, a second bridge guide wheel, a first working guide wheel, a second working guide wheel and a wire tensioning device; after metal wires are pulled out from the wire cylinder, the metal wires bypass the first bridge guide wheel, the first working guide wheel, the second working guide wheel and the second bridge guide wheel in sequence and then are fixed on the wire cylinder; the wire tensioning device comprises a first pressing wheel and a second pressing wheel; the first pressing wheel is positioned between the first bridge guide wheel and the first working guide wheel; the second pressing wheel is positioned between the second bridge guide wheel and the second working guide wheel; and the first pressing wheel and the second pressing wheel are matched with the metal wires. The metal wires are tensioned by tightly pressing the metal wires through the first pressing wheel and the second pressing wheel; the wire cylinder receives the upper tensile force and the lower tensile force, so that stress balance is kept and the stability of the wire cylinder is guaranteed; and the distance between the wire tensioning device and the first working guide wheel as well as the distance between the wire tensioning device and the second working guide wheel are shortened, so that the tensioning force, applied to the metal wires, of the wire tensioning device is increased and the cutting quality is guaranteed.

Description

technical field [0001] The invention belongs to an important part of a wire cutting machine tool, in particular to a wire tightening mechanism of a wire cutting machine tool. Background technique [0002] When the wire cutting machine is cutting, it is necessary to tension the metal wire on the working side, such as figure 1 As shown, two wire tightening devices 20 are installed on the same side of the wire drum 10. When the metal wire in cutting needs to be tightened, the two wire tightening devices act on the same side, so that the wire drum is subjected to the pulling force on the same side. Thus, the wire drum is unbalanced in force. Simultaneously, the distance between the tensioning wire device and the metal wire cutting edge is relatively long, and the tension force to the metal wire is not enough when tensioning, which affects the cutting quality. Contents of the invention [0003] The object of the present invention is to provide a wire tightening mechanism of a...

AI Technical Summary

Problems solved by technology

At the same time, the distance between the wire tightening device and the cutting edge of the metal wire is relatively long, and the tension force on the metal wire is not enough when tensioning, which affects the cutting quality

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