Title:
SCROLL PART MANUFACTURING AND ITS DEVICE FOR SCROLL FLUID SUCTION AND DRAIN EQUIPMENT
Document Type and Number:
Japanese Patent JPS57143101
Kind Code:
A
Abstract:
PURPOSE:To reduce shaping in such a way that a wadding is embedded into one of two molds equipped with scroll grooves, and after a material is filled into the other, and hardened, the wadding is extruded, and then reducing the number of releasing tapers at the scroll portion when forming. CONSTITUTION:A second mold 7 is provided which is situated at is inside with a first scroll groove 1 having a wedge-shape in its section, owns a second scroll groove 2 having a rectangular shape in its section on one side, and owns a first mold 3 having a plurality of openings 4, a ring-shaped concave part 13 and a sprue 14 on the other side. Then, a wadding 5 in scroll shape equipped with a plurality of pins 6 is inserted into the first groove 1, and the first and second molds 3, 7 are linked together. When molten metal material is infused through the sprue 14, the material is filled into the second groove 2, a space 9 and the concave part 13, and hardened. After hardening, linkage of the first and second molds 3, 7 is released, and when the wadding 5 is extruded, the hardened material is readily removed from the first mold 3. Thus, the number of releasing tapers when forming can be reduced.
Inventors:
FUKUHARA MASAICHI
Application Number:
JP2831281A
Publication Date:
September 04, 1982
Filing Date:
March 02, 1981
Export Citation:
Assignee:
SANKYO DENKI CO LTD
International Classes:
F01C1/02; F04C18/02; F01C21/00; (IPC1-7): F01C1/04
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