JPH0168176U

JPH0168176U -

Info

Publication number: JPH0168176U
Application number: JP1987162030U
Authority: JP
Priority date: 1987-10-23
Filing date: 1987-10-23
Publication date: 1989-05-02

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例による溶接装置の構
成を示す図、第２図イ〜ヘは同実施例によるサイ
ジング動作を説明する図で、第２図イ，ロはサイ
ジング刃固定側にパイプが固定された所を示す正
面図および平断面図、第２図ハ，ニはパイプにサ
イジングを行つている所を示す正面図および平断
面図、第２図ホ，ヘはサイジングが終わりパイプ
が移動可能になつた所を示す正面図および平断面
図、第３図は従来のＤＣＳＰＴＩＧ溶接によるパ
イプはめ合い溶接を示す図、第４図は従来のＡＣ
ＴＩＧ溶接によるパイプはめ合い溶接を示す図
である。１……小径パイプ、２……大径パイプ、３……
ＴＩＧトーチ、５……サイジング刃固定側、６…
…サイジング刃移動側、７……サイジング前／後
進アクチユエータ、８……大径パイプ位置決め手
段、９……小径パイプ位置決め手段、１０……位
置決め機構、１１……サイジング機構、１２……
溶接機構。 Fig. 1 is a diagram showing the configuration of a welding device according to an embodiment of this invention, Fig. 2 A to F are diagrams explaining the sizing operation according to the same embodiment, and Fig. 2 A and B show a pipe on the fixed side of the sizing blade. Figures 2C and 2 are front views and plane sectional views showing where the pipe is being sized, and Figures 2E and 2 show the pipe being sized after sizing. A front view and a plan sectional view showing the movable area, Figure 3 is a diagram showing pipe fitting welding by conventional DCSPTIG welding, Figure 4 is a diagram showing conventional AC
It is a figure which shows pipe fitting welding by TIG welding. 1...Small diameter pipe, 2...Large diameter pipe, 3...
TIG torch, 5...Sizing blade fixed side, 6...
...Sizing blade moving side, 7...Sizing forward/reverse actuator, 8...Large diameter pipe positioning means, 9...Small diameter pipe positioning means, 10...Positioning mechanism, 11...Sizing mechanism, 12...
Welding mechanism.

Claims

[Scope of utility model registration request]

In a welding device that inserts a small diameter pipe into a large diameter pipe and welds the lap joint thereof, the large diameter pipe positioning means and the positioning means for inserting and fixing the small diameter pipe into the large diameter pipe by a required dimension. means for pressurizing the lap joint portion of the large diameter pipe and the small diameter pipe from the outside of the large diameter pipe to bring the inner surface of the large diameter pipe and the outer surface of the small diameter pipe into close contact; A welding device comprising a welding means for welding a lap joint portion of the large-diameter pipe and the small-diameter pipe that are brought into close contact with each other by means of a welding device.