Tension control and torsion spring steel coil brake device for spindle of braiding machine

Abstract

A tension control and torsion spring steel coil brake device for a spindle of a braiding machine comprises a steel coil torsion spring, an elastic sleeve, a drill axis, a base and a central shaft, wherein a torque arm above the steel coil torsion spring is inserted in a notch on the elastic sleeve, and a torque arm below the steel coil torsion spring is inserted in a notch of the central shaft; under a free state, the inner wall of the steel coil torsion spring wraps up the outer walls of the drill axis and the central shaft, and a gap is reserved between the elastic sleeve and the steel coil torsion spring, so that the elastic sleeve and the steel coil torsion spring can rotate relatively; a rolling wheel is arranged on a bulge at the upper end of the elastic sleeve, and the circumferential profile of the rolling wheel is closely attached on a wedge of a draw bar; and when the machine is stopped, the tension of braiding wires disappears instantly, the draw bar drops on the base under the action of the spring, during descending, the wedge pushing the rolling wheel is loosen, the elastic sleeve restores rotationally, the steel coil torsion spring returns back to be in a free state, the inner diameter of the helix also wraps up the outer walls of the central shaft and the drill axis, and a lug on the drill axis clamps the spindle to enable the spindle to stop rotating instantly. The tension control and torsion spring steel coil brake device adopts a band-type brake to brake, so that the braking operation is flexible and reliable.

Description

technical field [0001] The invention relates to the technical field of braiding machines, in particular to tension control of a braiding machine spindle and a torsion spring braking device for steel coils. Background technique [0002] High-pressure oil hoses, gas hoses, cable hoses, etc., and even water hoses for bathrooms, all need to be braided with a protective layer on the outer layer, and braided wires such as metal wires or nylon wires are wound into a net. The general structure of our country's knitting machine is that there are more than 20 spindles walking on the panel around the central hose in an S-shaped trajectory, and the braiding wire is wound on the central hose during the process. The weaving process requires the spindles to flow continuously , Supply the braiding yarn with constant tension. If the yarn of one of the spindles is used up or broken, the whole machine will automatically shut down. . When the power is suddenly cut off, all the spindles with s...

AI Technical Summary

Problems solved by technology

Existing knitting machines are still very imperfect in this respect, for example figure 1 The spindle braking mechanism of the prior art shown is to push the pendulum by the pull rod, and use the friction plate to brake the spindle chassis, but the friction plate is easy to wear, the life is short, the braking force is unstable, it is easy to slip after oil seeps in, and the reaction is not sensitive , large braking stroke

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