Universal welding machine for automatic welding of metal section on the car roof

This plant was designed for protective gas welding on cooled copper backings of three longitudinal lap welds which join the roof sections of passenger car types 4170, 4179, 4440, 4186 using a laser system to control seams.
Principle of operation
By means of lift-and-carry facilities the section elements are placed on the stand where they are fixed. By means of a gantry the welding machine is placed to the beginning of the weld then the edges are clamped and the order is given to start the welding. After welding the automatic welding machine returns to its starting position, the clamps are released. The gantry moves to the next weld. After three welds are finished the gantry returns to its starting position. The finished workpiece is taken away from the stand and sent to the next workplace. The process is controlled by the operator on the monitor.

1	Capacity sections/year	2400
2	Work mode	2 shifts
3	Stand for assembly roof secions:
	Type	Readjustable
	Number of dimension-type pieces	8
	Stand drives	Pneumatic
	Manufacturer of pneumatic equipment	FESTO
	Principal of stand readjustment	Automatic
	Principal of stand control	Button, sensor control board
	Backing type	Cooled copper backings
	Coolant	Water
4	Cooling system	Self-contained system
	Cooling unit	FK 4000
	Manufacturer	Fronius
	Capacity, l/min	3,5
	Pressure (max), Mpa	0,42
	Hydraulic drop (max), m	33
	Coolant volume, l	5,5
	Power consumption, Kw	2,3
5	Pressed air supply system	Self-contained system
6	Compressor	Ф500 \| LT100
7	Capacity, m³/min	1,1
8	Pressure, Mpa	0,6
9	Power consumption, Kw	7,5
10	Welding gantry
	Travel speed, m/min	12
	Welding speed, m/h	48
	Welding machine type	Kemppi PRO 3200W
	Manufacturer	Kemppi