Device for producing glass chopped strands, method for maintaining surface of rubber roller, and method for producing glass chopped strands

Abstract

Provided is a device for producing glass chopped strands that enables a cutter roller to continuously cut a glass strand by grinding the roughened surface of a rubber roller by just the right amount and maintaining the rubber roller in a uniform smooth state, even in cases where the diameter of the rubber roller has been reduced by the abutment of the cutter roller. This device (100) for producing glass chopped strands comprises: a rubber roller (11); a cutter roller (10) that abuts against the surface of the rubber roller (11) and cuts a glass strand (F) while rotating; and a grinding means (12) that grinds the surface of the rubber roller (11) while moving back and forth in the width direction of the rubber roller (11), and that comes closer to the rubber roller (11) as the diameter of the rubber roller (11) decreases. The state of the grinding means (12) with respect to the rubber roller (11) is made variable such that the grinding amount of the rubber roller (11) per unit time is increased as the diameter of the rubber roller (11) decreases.

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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