One-step dipping yarn device

Abstract

The invention relates to the technical field of carbon fiber dipping, in particular to a one-step dipping yarn device, comprising: a constant tension unwinding mechanism, a twist-free positioning mechanism, a fiber spreading mechanism, a yarn tension sensor, a dipping mechanism, a glue extrusion setting mechanism, and an oven , traction mechanism and cutting mechanism, the yarn is released from the bobbin through the constant tension unwinding mechanism, and the unwinding mechanism is used to spread the released yarn into sheet-like yarn, and then the yarn enters the dipping mechanism. Impregnated with resin, the impregnated yarn is squeezed out of excess resin and shaped by the extrusion setting mechanism. The shaped yarn is thermally cured into a rod-shaped yarn through an oven, and the rod-shaped yarn is pulled by a pulling mechanism. A cutting mechanism is used to cut the cured yarn into segments to complete the entire carbon fiber dipping process. The dipping process of the present invention is completed in one step, with high efficiency, no pores inside after curing, and high product quality.

Description

technical field [0001] The invention relates to the technical field of carbon fiber dipping, in particular to a device for making dipping yarn by one-step method. Background technique [0002] Dipped yarn is a cylindrical tow-like composite material made of fiber tows impregnated with liquid resin and cured. This material is generally used as a test sample to test its tensile properties. A standard dipped yarn The sample has a straight appearance, uniform dipping, no burr, no pores, no broken yarn, no resin colloid, no fiber dislocation, the whole body is clustered, and the color is round and bright. [0003] At present, the process commonly used to make dipped yarn is vacuum infusion process. The resin used for dipped yarn is vacuum infusion resin. This kind of resin has low viscosity, long curing time, and contains volatile solvents. The dipping process prepared by vacuum infusion process Because the solvent cannot be volatilized out of the yarn, there will be pores on th...

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Problems solved by technology

[0003] At present, the process commonly used to make dipped yarn is vacuum infusion process. The resin used for dipped yarn is vacuum infusion resin. This kind of resin has low viscosity, long curing time, and contains volatile solvents. The impregnation prepared by vacuum infusion process Because the solvent cannot volatilize the yarn, there will be pores on the surface of the sample, and the vacuum infusion process cannot guarantee the curing of the dipped yarn under constant tension, so the finished product of the dipped yarn sample made by this process is poor, and the tensile test effect is poor. not ideal

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