Submicron carding slivering device and operation method thereof

The invention relates to a submicron carding slivering device and an operation method thereof.The submicron carding slivering device comprises a cotton feeding trolley, a cotton sliver pressing machine and a cotton sliver size shaping machine, and negative pressure openings in the two sides of the cotton feeding trolley are in butt joint with an inlet of the cotton sliver pressing machine through pipelines; a cotton feeding roller, a licker-in, a cylinder, a doffer, a stripping roller and a bundling roller are sequentially arranged on a working table of the cotton sliver pressing machine from left to right, and an outlet of the cotton sliver pressing machine is in butt joint with an inlet of the cotton sliver size shaping machine. A roller group and a thickness adjusting structure are respectively arranged on a working table of the cotton sliver size shaping machine from left to right, a leather roller group corresponding to the roller group is arranged on the roller group, and a first control panel for contr