SU1202769A1 - Remotely controlled apparatus for manual electric arc-welding - Google Patents

Description

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t The invention relates to electric arc welding, in particular, to the design of remote devices for manual electric arc welding.

The aim of the invention is to eliminate the incomplete safety of servicing remote welding current adjustment devices from the console located on the electrode holder or welder’s clothing, and to save energy, increase the welder’s productivity and improve welding quality.

The drawing shows an electric circuit of an electric arc welding device.

The device consists of starting equipment 1 and an actuator 2 for adjusting the current of the welding transformer 3, a switching unit 4, a remote control unit 5, a plug connector

6, the electrode holder 7. The switching unit 4 is located under one housing with the welding transformer 3 and is fed through the step-down transformer 8 from the AC network. The secondary winding 9 of the step-down transformer 8 through two relays 10 and 11, two diodes 12 and 13 connected in series with the coils of the relay and the limit switches 14 and 15 are connected to the remote control plug connector 6, consisting of two buttons 16 and 17 connected to counter-parallel diodes 18 and 19. The plug connector is in contact with the electrode holder

7, connected, in turn, with the return wire of the secondary winding of a step-down transformer.

The device is based on the separation of alternating current by polo10

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12027692

strong and negative half-periods. When the console 5 is turned on into the plug connector 6, the current begins to flow in a closed circuit from the winding 9 of the lower J transformer 8 through the coils of the relays 10 and P, diodes 12 and 13, limit switches 14 and 15, which limit the current adjustment to the larger and smaller sides. Then, the current through the buttons 16 and 17 and the diodes 18 and 19 return through the welding cable to the winding 9 of the transformer 8. At the same time, contacts A and B of both relays 10 and P. are triggered. Electrolytic capacitors 20 play the role of smooth filters. Via contacts B, the starting equipment 1 of the welding transformer is triggered, and through contacts A, the reversing mechanism 2 for adjusting the current is triggered. When you press one of the buttons 16 or 17 of the remote control 5, the current begins to flow only in one direction or another along the circuit. In this case, the relay 10 or relay 11 is de-energized, and through the contacts L, the mechanism 2 for adjusting the current of the welding transformer 3 is actuated up or down.

The device can be used for any type of welding transducer.

The use of the proposed device makes it possible to control the welding transformer at a considerable distance and thereby save the work time of the welder and electricity.

The device also allows you to quickly turn off the welding transformer, if necessary, at any time directly from the welding station.

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Compiled by V.Tkachenko Editor N.Pushnenkova Tehred Z.Kastelevich Proofreader V.Sinitska

 8357/14 Circulation 1085, Subscription VNIIPI USSR State Committee for Inventions and Discoveries, 430/5, Raushsk nab., Moscow, 113035, Moscow

Fipial PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

REMOTE DEVICE FOR MANUAL ELECTRIC ARC WELDING, comprising a welding transformer with a welding cable, an actuating current control mechanism with limit switches for maximum and minimum welding current, a switching unit including a step-down transformer and two relays, as well as an electrode holder and a remote control unit, characterized in that in order to improve overall dimensions and save energy, two diodes, two capacitors and a connector are introduced into it, and the remote control unit is fln in the form of two normally closed buttons and two diodes, while the buttons are connected in parallel, each through its own diode, connected by polarities opposite each other, and connected via a connector to the welding cable of the limit switches of the current adjustment mechanism, in addition, the windings of two relays of the switching unit each is connected by one terminal to the first terminal of the secondary winding of the step-down trans-G formator of this unit, and by the other through a diode, to the other terminal of the corresponding executive limit switch current regulation mechanism, both diodes connected to the windings in mutually opposite directions, in addition, the second output of the secondary winding of the step-down transformer of the switching unit is connected to the welding cable, and a capacitor is connected in parallel to each relay winding.