The invention relates to an aggregated type spun
yarn super large drafting device and a
spinning technology. The aggregated type spun
yarn super large drafting device at least comprises two main drafting areas and one post drafting area, and a
fiber strand passes through the post drafting area and then enters the two main drafting areas, respectively a rear main drafting area and a front main drafting area in sequence in the running direction of the
fiber strand; rollers / leather rollers are arranged in the front and back of all the areas, and the main drafting areas are further provided with main drafting area upper / lower pins, leather rings and tension rollers, wherein aggregation grooves are formed in the adhering surfaces of the
fiber strands of the front main drafting area upper pins, the
groove width is reduced in the running direction of the fiber strands, and the groove depth is increased in the running direction of the fiber strands. A drawn sliver firstly enters the post drafting area and is subjected to pre-drafting, then enters a rear main drafting area to be subjected to primary drafting, afterwards enters a front main drafting area to be aggregated, and finally is rolled into spun
yarn after being twisted. In the aggregated type spun yarn super large drafting device and the
spinning technology, super large drafting is achieved by reducing the length of a floating area and adding a main drafting area, the roving procedure is omitted, the technological procedure is shortened, the yarn quality and
resultant yarn efficiency are improved, and the aggregated type spun yarn super large drafting device have the advantages of being simple in structural technology, easy to operate and low in cost.