Parameters Affecting Fiber Quality and Productivity of Coir Spinning Machines

To meet the demand for increasing the productivity of coir fiber products, the coir fiber automatic twisting machine has been successfully researched and manufactured. However, the output of the machine has not met the quality criteria such as coir fiber thread with an irregular diameter, uneven fiber yield production (kg/hour). Due to the influence of many factors related to the machine structure that has not been clearly defined (such as the speed of spinning, the openness of coir fiber as well as the speed of spinning of the machine), the quality and output of coir fiber is not stability. Thus, the question is to experiment to find out the factors affecting the quality and production of coir products. The paper started with the study of theoretical foundations, improved machine structure, mechanical structure, and control program to suit the production conditions of the business. The work is conducted through the experimental design table of sampling measurement, calculation, and experimental data. The calculation to find the regression equation describing the effect of the parameters related to uniformity on the product is mainly due to the workpiece speed and thread winding time and the most appropriate parameter selection of the influencing factors to adjust for the machine. Comparing the results between the product before the machine improvement and the product after the machine improvement, the criteria for evaluating the quality of coconut fiber products based on the diameter collected (mm) and the yield production will only be evaluated based on the length of coconut fiber obtained (m/min). The key content of the paper is to analyze and evaluate the factors affecting the quality and yield production of coconut fiber. They consist of two main parts: i) The first one is to analyze and evaluate the relationship between each influencing factor and yarn quality and yield. ii) The second one is to analyze and evaluate the relationship between many influencing factors and yarn quality and yield. Then is the process of improving the coir machine, the content and results of the improvement process.