JPS6316574U

JPS6316574U -

Info

Publication number: JPS6316574U
Application number: JP11108386U
Authority: JP
Priority date: 1986-07-18
Filing date: 1986-07-18
Publication date: 1988-02-03
Also published as: JPH0329023Y2

Description

[Brief explanation of the drawing]

第１図〜第５図は本考案の一実施例を示し、第
１図は一部切欠き正面図、第２図は第１図の―
矢視図、第３図は第１図の―矢視図、第４
図は第１図の―矢視図、第５図は第１図の
―矢視図であり、第６図と第７図は本考案の他
の実施例を示し、第６図は前記第２図相当の断面
図、第７図は前記第３図相当の断面図であり、第
８図は本考案の更に他の実施例を示す一部切欠き
正面図、第９図は電極の変形例を示す断面図であ
る。１……トーチ、２……芯管、３……電極、５…
…隔壁用チユーブ、６……ガス流入路、７……冷
却通路、８……絶縁物、９……支持筒、１０……
チツプ、１１……筒状空間、１２……冷却ガス流
入口、１４……冷却ガス流通孔、１５……オリフ
イス、１６……流通路、１９……プラズマ作動ガ
ス流通路、２０……プラズマ作動ガス噴出口、２
１……冷却ガス流出口、２３……シールドカツプ
。 Figures 1 to 5 show an embodiment of the present invention, with Figure 1 being a partially cutaway front view, and Figure 2 being the same as in Figure 1.
The arrow view, Figure 3 is the - arrow view, Figure 4 of Figure 1.
The figure is a view in the direction of the arrow in FIG. 1, FIG. 5 is a view in the direction of the arrow in FIG. 1, and FIGS. 6 and 7 show other embodiments of the present invention. 2 is a sectional view equivalent to FIG. 2, FIG. 7 is a sectional view equivalent to the above-mentioned FIG. 3, FIG. 8 is a partially cutaway front view showing still another embodiment of the present invention, and FIG. It is a sectional view showing an example. 1...Torch, 2...Core tube, 3...Electrode, 5...
...Bulkhead tube, 6...Gas inflow path, 7...Cooling passage, 8...Insulator, 9...Support tube, 10...
Chip, 11...Cylindrical space, 12...Cooling gas inlet, 14...Cooling gas distribution hole, 15...Orifice, 16...Flow path, 19...Plasma operation gas flow path, 20...Plasma operation Gas outlet, 2
1...Cooling gas outlet, 23...Shield cup.

Claims

[Scope of utility model registration request]

In a plasma cutting torch, an electrode is attached to the tip of a core tube provided inside the torch body, a support tube is fitted onto the core tube through an insulator, and a tip and a shield cup are attached to the support tube. A gas inflow path is formed that penetrates the electrode and reaches near the tip of the electrode, communicates with the gas inflow path near the tip of the electrode, passes through the electrode and the core tube adjacent to the gas inflow path, and then passes through the core tube. A cooling passage is formed through an orifice drilled in the insulator and the support cylinder, and the cooling passage is branched into two, with one branch being used for plasma working gas flow between the chip and the electrodes. A plasma cutting torch characterized in that the tip and the shield cup are connected to each other, and the other branch path is connected between the tip and the shield cup.