JPS6286980U

JPS6286980U -

Info

Publication number: JPS6286980U
Application number: JP17910985U
Authority: JP
Priority date: 1985-11-22
Filing date: 1985-11-22
Publication date: 1987-06-03
Also published as: JPH0230156Y2

Description

[Brief explanation of the drawing]

第１図はキヤブタイヤケーブルの断面図、第２
図は本考案の実施例に係る装置の回路図、第３図
は同じく他の実施例の回路図、第４図は他のキヤ
ブタイヤケーブルの例の断面図である。１〜キヤブタイヤケーブル、２〜主導体、４〜
信号線、５，５′〜絶縁外被、６，６′〜予知導
体、１０〜トランス付溶接ガン、１１〜重ね抵抗
溶接機用制御装置、１２〜予知回路、１３〜断線
・地絡検出器、１３ａ〜断線検出器、１３ｂ〜地
絡検出器、１４〜ジヤンパー線、１５，２０，２
３〜リレー、１６〜自己保持接点、１７，２１，
２４〜電源、１８〜始動用スイツチ、１９，２２
〜アース。 Figure 1 is a cross-sectional view of the cab tire cable, Figure 2
3 is a circuit diagram of a device according to an embodiment of the present invention, FIG. 3 is a circuit diagram of another embodiment, and FIG. 4 is a sectional view of another example of a cab tire cable. 1 ~ Cab tire cable, 2 ~ Main conductor, 4 ~
Signal line, 5, 5' - insulation jacket, 6, 6' - predictive conductor, 10 - welding gun with transformer, 11 - control device for lap resistance welding machine, 12 - predictive circuit, 13 - disconnection/ground fault detector , 13a - disconnection detector, 13b - ground fault detector, 14 - jumper wire, 15, 20, 2
3 ~ Relay, 16 ~ Self-holding contact, 17, 21,
24 ~ Power supply, 18 ~ Starting switch, 19, 22
~Earth.

Claims

[Claims for Utility Model Registration] (1) Connecting a control device for a lap resistance welding machine and a welding gun with a transformer, and comprising a main conductor for supplying power to the welding gun with a transformer and a signal line for transmitting control signals. A prediction conductor is provided under the insulating jacket outside the main conductor and signal line in the cab tire cable, and the prediction conductor and the welding gun side end of the signal line are short-circuited with a jumper wire to form a prediction circuit, By providing a disconnection detector for detecting a disconnection of the predictive conductor constituting the predictive circuit, a ground fault detector for detecting a ground fault, or a disconnection/ground fault detector serving as both at the control device side end of this predictive circuit. , A cabtire cable breakage and ground fault prediction device for a lap resistance welding machine, which predicts a ground fault in the main conductor of the cabtire cable. (2) A disconnection/ground fault detector consists of a relay, its self-holding contact, and a power supply connected in series, a starting switch connected in parallel with the self-holding contact, and a grounded circuit as a predictive device. A cab tire cable breakage and ground fault predicting device for a lap resistance welding machine according to claim 1, which is connected between a predictive conductor and a signal line. (3) The disconnection detector is composed of a first relay connected in series and its power supply inserted between the prediction conductor and the signal line of the prediction circuit, and the earth fault detector is
Claim 1 of the utility model registration consists of a second relay connected in series inserted between the predictive conductor of the predictive circuit and the ground, and its power source.
A cab tire cable breakage and ground fault prediction device for a lap resistance welding machine as described in 2.