Appeal No. 1998-0839
Application No. 08/433,206
The claimed invention relates to a method for producing a
tank for a heat exchanger such as a car radiator.
Claim 1 reproduced below is further illustrative of the
claimed subject matter.
1. A method of producing a tank for a heat exchanger,
comprising the steps of:
forming an annular groove of a rectangular cross-section
in an open end surface of an annular skirt portion formed at
an open end of the tank over an entire periphery thereof;
receiving said skirt portion in a space formed by molds
so that an outer side surface and an inner side surface of
said skirt portion are held by said molds;
urging said outer side surface and said inner side
surface of said skirt portion toward each other by a
projection formed on a surface of one of said molds facing one
of said outer side surface and said inner side surface of said
skirt portion, said projection being formed on a portion of
said one of said molds operative to be opposed to a portion of
said one of said outer side surface and said inner side
surface of said skirt portion disposed in the vicinity of said
open end surface;
guiding, by a guide surface (55) formed on said surface
of said one of said molds having said projection and extending
from a bottom of said projection to a portion of said one of
said molds operative to be disposed in lateral registry with a
bottom surface of said annular groove, the deformation of said
one of said outer side surface and said inner side surface of
said skirt portion toward said annular groove; and
injecting a seal resin into said annular groove and a
seal-forming space formed in another of said molds opposed of
said annular groove.
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