Production device and production method for chopped glass strands

Abstract

Provided is a production device for chopped glass strands wherein deep grooves do not easily form in the surface of a rubber-covered roller even when the peripheral speed of a cutter roller is set faster than the peripheral speed of the rubber-covered roller. A production device (100) for chopped glass strands equipped with a rubber-covered roller (11) for conveying downstream glass strands (F) supplied from upstream and a cutter roller (10) for cutting the glass strands (F) while rotating in contact with the surface (11a) of the rubber-covered roller (11), in which the rubber-covered roller (11) and the cutter roller (10) each rotate in a manner such that the slip ratio (S) of the cutter roller (10) to the rubber-covered roller (11) represented by formula (1) constantly varies by positive values. (1) S(%)=(v1/v2-1)×100 (v1: peripheral speed of outer periphery of cutter roller; v2: peripheral speed of outer periphery of rubber-covered roller.)

Description

technical field [0001] This invention relates to the manufacturing apparatus and manufacturing method of the glass fiber chopped strand provided with the rubber roll and the cutter roll. Background technique [0002] The glass chopped strands are produced by cutting glass fiber strands (hereinafter, simply referred to as glass strands) obtained by collecting several hundred to several thousand glass monofilaments into predetermined lengths. The glass strand cutting process is performed by rotating the cutter roll in contact with the surface of the rubber roll in a state where the glass strand supplied from the upstream is placed on the surface of the rubber roll. Cutting blades are attached to the surface of the cutter roll at equal intervals and radially around the rotation axis. When the glass strands are fed between the cutter roll and the rubber roll, the glass strands are cut into short fibers of a certain length by the cutter roll, thereby generating glass fiber chopp...

AI Technical Summary

Problems solved by technology

[0003] Here, when the cutter roller and the rubber roller are rotated at the same peripheral speed to cut the glass strands, the glass fiber chopped strands may enter between the cutting blades, causing clogging and cannot be discharged.

Especially in the case of producing short glass fiber chopped strands, the distance between the cutting blades becomes narrow, and the glass fiber chopped strands tend to enter between the cutting blades and cause clogging

If you try to cut the glass strand with a clogged cutting blade, there is a possibility that the glass strand may not be cut properly

Images