Sughrue Mion, PLLC
Extrusion molding apparatus for a thin tube
An extrusion molding apparatus includes a molding die (3) through which a plasticized and kneaded raw material (1), composed of a synthetic resin material having high heat-resistance and strength, is extruded to form a tubular body (51). The tubular body (51) is passed on a sizing die (4) to cool and harden the tubular body (51) and give it a final inner diameter. The molding die (3) and sizing die (4) are coupled to each other by a connecting pipe (6). The sizing die (4) is made of a carbon material. The connecting pipe (6) supplies a first air (81) to an interior of the sizing die (4). An air lubrication layer is formed between an inner surface (52) of the continuous product (5) and an outer surface (41) of the sizing die (4) by a second air (92) supplied to an interior of the molding die (3).
Suzuki Kanshi Co., Ltd.
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Yasuyuki
Suzuki