Overview
Cotton finishing is the process of finishing cotton into lint. The process of separating the fibers on the cotton from the cotton is called ginning.
The progress of cotton finishing machines has promoted the progress of cotton planting industry and cotton textile industry, and the substantial increase in cotton production has promoted the progress of cotton finishing industry.
The earliest cotton gin used in the world was a very simple wooden roller winch. It used two wooden rollers parallel to each other, mounted on two wooden pillars on the left and right, and the handle of the lower active wooden roller was shaken by hand. The wooden roller rotates, and a driven wooden roller above relies on friction to rotate along with it. Put the cotton into the gap between the two rollers, the cotton fibers will be pulled out by the relative rotation of the upper and lower rollers, and the cotton will be blocked and separated from the cotton fibers. This type of winch first appeared in India and was called “Chukka”. At the end of the Song Dynasty and the beginning of the Yuan Dynasty, Huang Daopo, a famous fabric technology innovator in my country, created an iron-wood roller winch based on the wooden roller winch, and replaced the driven wooden roller with an iron roller. One end of the iron roller The wooden bar runs across it and when the iron roller rotates, the wooden bar acts as a flywheel. When twisting flowers, shake the wooden roller by hand and step on the pedal with your feet to drive the iron roller to rotate, increasing the friction against the wooden roller and greatly improving the production efficiency, as shown in Figure 6-1. In 1840, American MacArthur created the punch-knife top roller gin machine, which was the prototype of the modern top roller gin machine. After continuous improvement, it gradually evolved into the current top roller gin machine. The sawtooth gin was created by ElWhitney and Hodgen Holmes between 1792 and 1796.
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