Apparatus for manufacturing composite insulators

Details Apparatus for manufacturing composite insulators Apparatus for manufacturing composite insulators

1996-03-18

1998-05-19

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Opposed registering coacting female molds

174174, 174179, 264254, 26427215, 264274, 264320, 425195, B29C 4318

Patent

active

057532729

ABSTRACT:
Apparatus for manufacturing a composite insulator including an FRP core rod which is integrally provided with a sheath and a plurality of sheds formed of an electrically insulating polymeric material. The core rod has a longitudinal end portion provided with a seat for a metal fitting, which is integral with the sheath. To manufacture such a composite insulator, the core rod is placed in a mold cavity of a mold assembly, with a seat forming member detachably fitted to the end portion of the core rod and arranged between a pair of mold halves. An inner space is formed between a seat forming member and the core rod, which is in communication with the mold cavity. An electrically insulating polymeric material is introduced into the mold cavity to form the sheath and sheds, while admitting the polymeric material into the space between the seat forming member and the core rod so as to form a seat for the metal fitting, which is essentially free from burrs.

REFERENCES:
patent: 4476081 (1984-10-01), Kaczerginski et al.
patent: 4654478 (1987-03-01), Ishihara et al.
patent: 4702873 (1987-10-01), Kaczerginski
patent: 5220134 (1993-06-01), Novel et al.
patent: 5336852 (1994-08-01), Goch et al.
patent: 5523038 (1996-06-01), Kunieda et al.
patent: 5563379 (1996-10-01), Kunieda et al.

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