Fiber stretching device

Abstract

The invention discloses a fiber stretching device. The device comprises an oven, a heater arranged in the oven, a guide roll, a fiber stretching roll group and a drive unit which is arranged outside the oven and is used for driving the fiber stretching roll group, wherein, the oven is equipped with a fiber bundle inlet and a fiber outlet; the guide roll is arranged at the inner side of the fiber bundle inlet; the fiber stretching roll group is arranged at the inner side of the fiber outlet and comprises drive fiber stretching rolls and driven fiber stretching rolls; the surface of each drive fiber stretching roll is equipped with a circular arc projecting surface; and the driven fiber stretching rolls with smooth surfaces are in a cylindrical shape and are arranged below the drive fiber stretching rolls. By utilizing the fiber stretching device, a glass fiber bundle can be stretched into monofilament fiber with certain width so as to facilitate the impregnation of resin during melt impregnation process.

Description

technical field [0001] The invention relates to the field of warp knitting, in particular to a fiber spreading device for spreading fiber bundles into monofilament fibers. Background technique [0002] Glass fiber is an inorganic non-metallic material with excellent performance. There are many kinds. The advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength. It is made of glass balls or waste glass through high-temperature melting, wire drawing, winding, weaving and other processes. The diameter of its single filament is several microns to more than 20 microns, which is equivalent to a hair. 1 / 20-1 / 5 of that, each bundle of fiber precursors consists of hundreds or even thousands of monofilaments. In the prior art, in the processing of warp-knitting thermosetting materials and warp-knitting thermoplastic materials, it is necessary to spread the fiber bundles into monofilaments first, so that the resin can penetrate int...

AI Technical Summary

Problems solved by technology

In the prior art, in the processing of warp-knitting thermosetting materials and warp-knitting thermoplastic materials, it is necessary to spread the fiber bundles into monofilaments first, so that the resin can penetrate into the fibers, and prevent dry threads or air bubbles from appearing in the formed board, which will affect the thickness of the board. the quality of

However, at present, there is no such fiber spreading device that can expand the glass fiber bundles into a monofilament ribbon material of a certain width according to the requirements of the warp knitting process.

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