JPH01159970U

JPH01159970U -

Info

Publication number: JPH01159970U
Application number: JP5611488U
Authority: JP
Priority date: 1988-04-26
Filing date: 1988-04-26
Publication date: 1989-11-07
Anticipated expiration: 2003-04-26
Also published as: JPH0622551Y2

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す接続図、第２図
は第１図の実施例の動作を説明するための線図、
第３図は本考案の別の実施例を示す接続図、第４
図は本考案のさらに別の実施例を示す配管図、第
５図は第４図に示す実施例の接続図、第６図は従
来の装置の例を示す配管図、第７図は第６図の従
来装置の外部接続図である。１…冷却水循環装置、２…電源装置、５…トー
チ、６…被加工物、７…電源スイツチ、２１…プ
ラズマ作動ガス用電磁弁、２２…制御回路、３１
…気体源、３２…冷却水用電磁弁、３３…気体用
電磁弁、５１…トーチスイツチ、１０１…貯水タ
ンク、１０２…送水ポンプ、１０３…熱交換器、
１０４…電動機、ＣＲ１，ＣＲ２，ＣＲ３…リレ
ー、Ｔ１，Ｔ３…（限時動作式）タイマ、Ｔ２，
Ｔ４…（瞬時動作限時復帰式）タイマ。 Fig. 1 is a connection diagram showing an embodiment of the present invention, Fig. 2 is a diagram for explaining the operation of the embodiment of Fig. 1,
Fig. 3 is a connection diagram showing another embodiment of the present invention;
The figure is a piping diagram showing yet another embodiment of the present invention, FIG. 5 is a connection diagram of the embodiment shown in FIG. 4, FIG. 6 is a piping diagram showing an example of a conventional device, and FIG. FIG. 2 is an external connection diagram of the conventional device shown in FIG. DESCRIPTION OF SYMBOLS 1... Cooling water circulation device, 2... Power supply device, 5... Torch, 6... Workpiece, 7... Power switch, 21... Solenoid valve for plasma working gas, 22... Control circuit, 31
...Gas source, 32... Solenoid valve for cooling water, 33... Solenoid valve for gas, 51... Torch switch, 101... Water storage tank, 102... Water pump, 103... Heat exchanger,
104...Electric motor, CR1, CR2, CR3...Relay, T1, T3...(time-limited operation type) timer, T2,
T4...(instantaneous action time-limited return type) timer.

Claims

[Claims for Utility Model Registration] 1. In a water-cooled plasma arc processing device that processes a workpiece while cooling water through a plasma arc torch, the cooling water is supplied from a cooling water circulation device, and the cooling water circulation device A water-cooled plasma arc processing device that starts and stops in conjunction with the supply and stop of processing power. 2. According to claim 1, the cooling water circulation device is a device that starts a predetermined time earlier than the processing power is supplied to the plasma arc torch and stops a predetermined time later than when the supply of the processing power stops. The water-cooled plasma arc processing device described. 3. The cooling water circulation device operates for a short time even when a power switch of the power supply device that supplies the processing power is turned on.
The water-cooled plasma arc processing device according to any one of the above. 4. The cooling water circulation device comprises a water supply pump, a heat exchanger, a pump drive electric motor, a water storage tank, and accessory parts, and is built into the power supply device for supplying the cutting power. The water-cooled plasma arc processing device described in . 5 A branch pipe for introducing gas is provided in the middle of the piping for supplying cooling water to the plasma arc torch, and when the power switch of the power supply device is cut off, gas is forcibly introduced from the branch pipe for a certain period of time. , Claims 1 to 4 are structured to eliminate residual cooling water within the plasma arc torch and piping.
The water-cooled plasma arc processing device according to any one of the above.