JPH04468U

JPH04468U -

Info

Publication number: JPH04468U
Application number: JP3670790U
Authority: JP
Priority date: 1990-04-05
Filing date: 1990-04-05
Publication date: 1992-01-06

Description

[Brief explanation of the drawing]

第１図は本考案スパイラルフイン溶接用フイン
強圧リングの一実施例の斜視図、第２図は同上の
フイン側面押さえリングの斜視図である。第３図
は公知のスパイラルフイン溶接装置の斜視図、第
４図は従来のフイン強圧リングの斜視図である。１……チユーブ、２……フイン、６……フイン
強圧リング、６ａ……フイン加工面押さえリング
、６ｂ……フイン側面押さえリング、６ｃ……セ
ラミツクリング、８……電極、９……電極。 FIG. 1 is a perspective view of an embodiment of the fin strong pressure ring for spiral fin welding of the present invention, and FIG. 2 is a perspective view of the same fin side pressing ring. FIG. 3 is a perspective view of a known spiral fin welding device, and FIG. 4 is a perspective view of a conventional fin pressure ring. 1...Tube, 2...Fin, 6...Fin strong pressure ring, 6a...Fin processed surface press ring, 6b...Fin side press ring, 6c...Ceramic ring, 8...Electrode, 9...Electrode.

Claims

[Scope of utility model registration request]

In a spiral fin welding device that wraps a band-shaped fin in a spiral around the outer periphery of a tube that moves in the axial direction while rotating, the fins are crimped and welded by applying electricity to the tube.In the spiral fin welding device, a fin pressure ring that holds and presses the periphery of the fin is placed in the center. A fin strong pressure ring for spiral fin welding, comprising a fin pressure surface holding ring and fin side holding rings on both sides, and a ceramic ring is adhered to the holding surface side of the fin side holding rings.