The utility model provides a carbon
fiber cylinder forming die which is simple and reasonable in structure, can be conveniently disassembled and assembled, ensures that a carbon
fiber material can be normally fed into the die, reduces the situations of
yarn clamping and carbon
fiber damage, improves the product forming quality, and is convenient for a formed product to be stripped from the die. The mold comprises an upper mold and a lower mold detachably connected with the upper mold, the upper mold and the lower mold are matched to form a mold cavity, an inner core
assembly is assembled in the mold cavity, a sliding block is laterally pushed along the lower mold to make contact with the inner core
assembly, an
overpressure block is embedded in the sliding block, the outer side end of the
overpressure block exceeds the edge of the sliding block, and the
overpressure block is inserted into the sliding block. A carbon fiber product is laid on the outer surface of the inner core
assembly, the inner core assembly comprises a middle shaft and a plurality of sliding blocks which are sequentially and adjacently arranged around the periphery of the middle shaft, the sliding blocks slide in the axis direction of the middle shaft, and the outer wall face of the middle shaft is provided with a draft angle
ranging from 0.5 degree to 1 degree.