Method of manufacturing composite insulator and packing member for use in same
AssigneeNGK Insulators, Ltd.
InventorsDaisaku Goto, Hiroshi Kashiwagi, Takao Tani
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Abstract
In a method of producing a composite insulator having a core member, end fitting members fixed to both end portions of the core member, and an overcoat member including a sheath portion formed on an outer surface of the core member and shed members, the overcoat member and the end fitting member are connected by curing. Moreover, a clamping operation is performed or a packing member is used for preventing a flow of an overcoat forming material into a seal portion. In this manner, it is possible to improve a seal performance of a connection boundary between the end fitting member and the overcoat member.
Claims22
A method of producing a composite insulator having a core member, end fitting members fixed to both end portions of the core member, and an overcoat member, said overcoat member including shed members and a sheath portion formed on an outer surface of the core member, said method comprising:
- clamping an end fitting member to each end portion of a core member;
- then setting said core member with said end fitting members clamped thereto into a mold;
- then filling an overcoat forming material in an overcoat forming space in said mold on an outer portion of said core member;
- then curing said overcoat forming material under pressure to form an overcoat member;
- and
- then again clamping each end fitting member to each end portion of said core member.
A method of producing a composite insulator having a core member, end fitting members fixed to both end portions of the core member, and an overcoat member, said overcoat member including shed members and a sheath portion formed on an outer surface of the core member, said method comprising:
- positioning an end fitting member at each end portion of a core member;
- then setting a core member and said end fitting members into a mold;
- inserting packing members in gaps between said core member and said end fitting members;
- then filling an overcoat forming material in an overcoat forming space in said mold on an outer portion of said core member;
- curing said overcoat forming material under pressure to form an overcoat member;
- and
- then clamping each end fitting member to each end portion of said core member.
Dependencies are inferred from the claim text.