Rotary valve for an injection molder

Details Rotary valve for an injection molder Rotary valve for an injection molder

B - Operations, Transporting

29

C

B29C 45/28 (2006.01) B29C 45/23 (2006.01)

Patent

CA 2067102

ABSTRACT This invention relates to a rotary valve for an injection molder provided with a molten resin passage into which molten resin is forced so that it flows from a screw side to a nozzle side, comprising a cylindrical valve chamber; and a cylindrical valve body disposed and fitted in the cylindrical valve chamber so as to have the same axis as that of the cylindrical valve chamber, the cylindrical valve body having through hole piercing therethrough in a radial direction so as to communicate with the molten resin passage and being rotatable about its axis in a sliding manner: the rotary valve also comprises circumferential grooves provided in a circumferential surface area of the cylindrical valve body such that they extend in a circumferential direction thereof and are aligned with in an axial direction thereof with the through hole between, and so that driving torque of the cylindrical valve body is sufficiently reduced.

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