Carbon fiber yarn bundle chopping device and shearing method thereof

Abstract

The invention discloses a carbon fiber yarn bundle chopping device and a shearing method thereof. The carbon fiber yarn bundle chopping device comprises a transmission mechanism for conveying carbon fiber yarn bundles, and a chopping mechanism for cutting off the carbon fiber yarn bundles, wherein the transmission mechanism comprises a pressing roller and a rubber roller arranged below the pressing roller; the chopping mechanism comprises a cutter roller and an air nozzle arranged below the cutter roller; a plurality of blades are distributed on the surface of the outer circumference of the cutter roller at intervals; jacking sheets are arranged between the blades; the cutting edges of the blades are in contact with the rubber roller; during shearing, the jacking sheets stop chopped carbon fibers from falling into clearances between the blades; meanwhile, the air nozzle below the cutter roller blows out air flow formed in the clearances between the blades and the jacking sheets so as to blow off the chopped carbon fibers attached to the cutter roller from the cutter roller and enable the chopped carbon fibers to fall off, so that the chopped carbon fibers are obtained. The device is simple in structure, and the shearing method is simple; the cutting technology is convenient and quick; compared with the prior art, the carbon fiber yarn bundle chopping device and the shearing method have the advantages that the cost is low, the production efficiency is high, and the technical measure is simple and feasible.

Description

technical field [0001] The invention relates to the production of chopped carbon fibers in the carbon fiber industry, in particular to a carbon fiber tow chopping device and a cutting method thereof. Background technique [0002] At present, the carbon fiber cutting machine mainly adopts two pressure wheel cutter head structures: one is that the fiber tow is continuously wound on the active cutter head, and after the backlog reaches a certain thickness, the tow is pressed by the pressure wheel set on one side of the cutter head , so that the inner fiber is cut off, and the chopped carbon fiber falls from the middle of the cutter head; the other is that the active rubber roller drives the pressure roller and the cutter roller to rotate under pressure, and the fiber tow is rotated by the rubber roller and The pressure roller is brought between the rotating rubber roller and the cutter roller, the tow is cut off under extrusion, and the chopped carbon fiber falls from the surfa...

AI Technical Summary

Problems solved by technology

When cutting carbon fiber, especially when cutting wet fiber, the chopped carbon fiber cut by the first cutter head structure tends to be blocked in the cutter head, while the chopped carbon fiber cut by the second cutter head structure tends to adhere to the cutter roller , that is to say, both cutter head structures have the problem that the chopped carbon fibers are difficult to fall smoothly

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