Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1997-06-18
1999-02-16
Thomas, Alexander
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
428122, 428 43, 494901, B32B 3116
Patent
active
058716823
ABSTRACT:
A weather strip is formed in an integral structure comprising: a welt part to be put on a flange formed on the edge of an opening in the body of an automobile, a sealing part protruding from the outer side wall of the welt part; and a core formed by punching a plate and buried in the welt part. The weather strip has a breakout section in which the core is broken apart at plurality of positions so that the breakout section is stretchable and contractible. A core breaking machine comprises: shafts arranged in a row and supported for turning; bending members on which the breakout section of the welt part of the weather strip is put on, fixedly joined to the upper ends of the shafts, respectively; gears fixedly mounted on the lower ends of the shafts, respectively, so that the adjacent gears are engaged; and a driving mechanism for driving the gears for turning alternately in opposite directions to turn the bending members alternately in opposite directions through a predetermined angle, respectively. The core breaking machine bends the breakout section of the weather strip repeatedly and alternately in opposite directions to cause portions of the core in the breakout section of the weather strip are broken apart due to fatigue.
REFERENCES:
patent: 3527013 (1970-09-01), Kruschwitz
patent: 4343845 (1982-08-01), Burden et al.
patent: 5143666 (1992-09-01), McManus et al.
patent: 5204157 (1993-04-01), Matsumiya
Kii Asajiro
Shoji Masanori
Nishikawa Rubber Co. Ltd.
Thomas Alexander
LandOfFree
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