SU1764880A1 - Welding table - Google Patents

Description

one

(21) 4744030/08

(22) 03.10.89

(46) 09/30/92. Bul Number 36

(75) V.A. Shumeiko

(56) USSR author's certificate

Ms 1368142, class B 23 K 37/00, 7/02, 1986. (54) WELDING TABLE

(57) Use: for the production of welding with ventilation

Welder's breathing zones Scope of the invention: a welding table comprises a housing 1 with a supply and exhaust ventilation system, a switching device with a delay unit and an airflow damper equipped with a lever 20 that is interoperable with the sensor 10 to control the welding current connection circuit. The case of the table 1 is equipped with 1 hp. f-ly, 3 ill.

The invention relates to welding equipment, namely, to tables for the production of welding with the ventilation system of the welder's breathing zone.

The purpose of the invention is to improve the working conditions of the welder by eliminating the delay in the start of operation of the supply and exhaust ventilation system.

1 shows a welding table, a general view; Fig. 2 is a control circuit of the welding process; FIG. 3 shows a variant of the device of the butterfly valve of the exhaust duct.

The welding table contains a housing 1 with a working grille 2, a vent umbrella 3 containing a drawer 4 with a mesh bottom in the lower tapering part, an air duct 5 connected to the umbrella, and in turn connected to the fan housing with an electric motor (not shown). Umbrella 6 with a duct is placed over the working grate 2. In the case of the welding table, there are drawers 7 and 8, a switch 9, a push-button switch 10, a push button, a START-STOP button 10, the switch 9 and the button 11 are mounted on the front part at the top right of the case, and

switch 9 on the duct 5 after the mesh box 4.

Circuit breaker 9, switch 10 and buttons 11 are wound up in a switching device 12 with a delay unit 13 (installation location not specified, selected under specific conditions), which also has a welding current sensor circuit 14 through which welding cable 15 is connected to the table. The switching device 12 has two outputs 16-1 and 16-2 for powering the welding apparatus and the fan motor. In the duct 5 at the place of installation of the switch 10 is placed the rotary valve 17 with the axis 18, the spring-loaded spring 19 and containing the lever 20, which interacts with the switch 10,

The welding table can be used for all types of gas welding and brazing with the use of fluxes when the fan is on and off, as well as for electric arc welding only with the fan on.

During electric welding, switch on 9 is switched on first, the fan is turned on and the contacts in the circuit are closed to turn on the welding machine, and then

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Claims (2)

button 11. The switching device 12 will turn on the welding machine only if there is sufficient exhaust in the duct 5 to close the contacts of the switch 10. If the hood is weak, pull out 4, discard the garbage, clean the mesh and insert it in place. If there is no suction from the table, the electric welding machine cannot be turned on. Claim 1. Welding table, comprising a housing with a supply and exhaust ventilation system, a welding current sensor, a switching device with a delay unit connected to a drive and a V 5109 gate FM.1 Air flow, characterized in that, in order to improve the working conditions of the welder by eliminating delayed start of operation of the supply and exhaust ventilation system, the airflow flap is equipped with a lever, and the table has a circuit for switching on the welding current with a control sensor, while the airflow flap lever is installed interoperable with a sensor to control the welding current start circuit. 2. The table of claim 1, of which is that the case of the table is equipped with drawers. nineteen Fig.Z Power network Phage.2 assembly unit 8 CIRCUIT Turn on the Fan