A special cutting device and cutting method for high-silica glass fiber chopped yarn

Abstract

The application relates to a special short-cutting device and a short-cutting method for high-silica glass fiber chopped yarns, wherein the special short-cutting device comprises a machine shell, three clamping claws and a cutter; the inside of the machine shell is sequentially provided with a guiding area, a cutting area and a conveying area from top to bottom; a lifting block is arranged in the cutting area, the lifting block is installed on the inner wall of the machine shell through lifting guide rails, and is driven to move up and down along the lifting guide rails between a clamping station and a cutting station through a connecting rod assembly; the three clamping claws are respectively a fixed clamping claw, a lower moving clamping claw and an upper moving clamping claw; the fixed clamping claw is arranged on the side of the cutting area far from the lifting block; the cutter is arranged below the fixed clamping claw; and the lower moving clamping claw and the upper moving clamping claw move synchronously with the lifting block; the application follows the basic principle of first spraying and compacting and then cutting; the upper moving clamping claw and the fixed clamping claw are respectively held on the two sides of the cutting position during cutting; the stress length of the fiber bundle is shortened; the fiber is instantaneously cut by the cutter; the cutting precision is improved; and the index requirements are met.

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