APPARATUS FOR CENTRIFUGAL FORMATION OF PIPE-TYPE PIECES Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: apparatus has a rotational mold, a drive to rotate the mold, pipeline to feed molding material and mixing head. Process of plastic components mixing is exercised directly before the mixture feeding into the mold. Mixing takes place at a section of a pipeline, made in the form of two coaxially placed pipes, that are passing through the center of the mold. To increase efficiency of mixing an outlet hole of the inner pipe is made perpendicular to the pipe axis. The mixing head is located in the hole of the outer pipe. The head is made as at least two blade wheels. Shaft of one of the blade wheels is connected with a flange of the mold by a plate and due to that it rotates with the rate of the mold. Joint of rotation of the second blade wheel is made as three conjugated gear wheels. One of the gear wheels is driving, has inner coupling and is fixed on the mold. The driven gear wheel is located coaxially with the pipeline and has a central hole, in which the second blade wheel is fixed. The apparatus combines static mixing of components by directed engagement of sprays with following dynamic mixing of the mixture by the mixing head, blade wheels of which are rotating in different directions and with different rate, providing effective mixing of the mixture just before its pouring out into the mold. EFFECT: apparatus is used for production of pipe-type pieces, made from composed polymeric materials. 4 dwg