Glass fiber chopped strand manufacturing apparatus, rubber roller surface maintenance method, and glass fiber chopped strand manufacturing method

Abstract

The present invention provides a glass fiber chopped strand manufacturing apparatus capable of sufficiently grinding the rough surface of the rubber roll to maintain a constant diameter even when the diameter of the rubber roll is reduced due to the contact of the cutter roll. In a smooth state, the cutting of the glass strand by the cutter roll is continued. A glass fiber chopped strand manufacturing device (100) includes: a rubber roll (11); a cutter roll (10) that cuts glass strands (F) while rotating in contact with the surface of the rubber roll (11); and a grinding mechanism (12), which grinds the surface of the rubber roller (11) while reciprocating in the width direction of the rubber roller (11), and feeds the rubber roller (11) correspondingly to the reduction of the diameter of the rubber roller (11). ) is close, wherein the glass fiber chopped strand manufacturing apparatus is configured to be able to change the grinding amount of the rubber roller (11) per unit time in accordance with the reduction of the diameter of the rubber roller (11). The state of the grinding mechanism (12) relative to the rubber roller (11).

Description

technical field [0001] The present invention relates to a manufacturing device of glass chopped strands including a rubber roll and a knife roll, a method for maintaining the surface of the rubber roll, and a method of manufacturing glass chopped strands. Background technique [0002] The glass chopped strands are manufactured by cutting glass fiber strands (hereinafter, simply referred to as glass strands) formed by collecting several hundred to several thousand glass monofilaments into constant 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 constan...

AI Technical Summary

Problems solved by technology

If the cutting process of the glass strands is continued with the surface of the rubber roller rough, the glass strands may be caught in the scratches on the surface of the rubber roll and not sufficiently contact with the cutting blade, so there is a possibility that the glass strands cannot be completely cut.

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