Method for segmentally controlling tension of creel

Abstract

The invention relates to the technical field of carbon fiber unwinding, in particular to a method for segmentally controlling creel tension, which comprises the following steps of: determining a tension value required by unwinding according to a production process; by adjusting the displacement of the mechanical connecting rod, the tension of the yarn on the empty winding spool reaches the tension value required by unwinding, and the empty winding displacement of the mechanical connecting rod at the moment is determined; by adjusting the displacement of the mechanical connecting rod, the tension of the yarn on the full-winding spool reaches the tension value required by unwinding, and the full-winding displacement of the mechanical connecting rod at the moment is determined; determining the total adjustment amount of the mechanical connecting rod according to the empty coil displacement and the full coil displacement of the mechanical connecting rod; establishing a relation function between the unwinding meter length and the displacement amount of the mechanical connecting rod, equally dividing the unwinding meter length into a plurality of segments, determining the adjusting amount of the mechanical connecting rod during each segment adjustment, and forming a corresponding segment adjustment table; in the invention, a segmented adjustment method is adopted, so that blind adjustment of operators is avoided, the efficiency and the tension control stability are improved, and the product quality is ensured.

Description

technical field [0001] The invention relates to the technical field of carbon fiber unwinding, in particular to a method for controlling the tension of a creel in sections. Background technique [0002] The pultrusion creel is the first equipment in the entire pultrusion production line. There are several carbon fiber bobbins on the creel for passive unwinding with the host. With the change of the diameter of the bobbin, the yarn tension of the upper die of each unwinding head will become larger and larger, and the huge change of the creel tension will affect the stability of the creel movement, resulting in uncontrollable pultrusion products. quality issues. [0003] In the prior art, in carbon fiber unwinding, a mechanical centralized control is commonly used to control the unwinding tension on the creel. Each layer of the creel has a movable through-type mechanical link, and one end of the spring in each unwinding station is connected to the brake. The other end of the ...

AI Technical Summary

Problems solved by technology

[0004] However, there is no standardized adjustment procedure for tension adjustment at this stage. The adjustment amount of the mechanical linkage is entirely determined by the experience of the operator, and the tension control of the creel is unstable, which affects product quality.

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