Water Heater Tank Middle Pipe Welding Machine

1. Welding torch is fixed while workpiece rotating. Welding position is horizontal. The workpiece is clamped tightly by jig at two ends and rotates.
2. Torch, rotary axis box and tailstock can be adjusted longitudinally to fit various kinds of welding.
3. Japan Omron PLC is adopted to control the machine to run and speed is adjusted by AC servo, which can improve the reliability of the equipment.
4. Adopts end face positioning and pneumatically clamping mode.
5. Adopts human-machine interface to alter the parameters. The welding time and weld length can be set via this interface. The alteration of the parameters can be input through the touch button conveniently and timely. Parameters can be stored and called.

This machine is made up of mainframe, spindle box and its pneumatic feeding mechanism, tailstock and its pneumatic feeding mechanism, workpiece supporting mechanism, welding torch feeding and adjusting mechanism, electrical control system, pneumatic system and welding power source.

1.Tailstock Clamping Mechanism

The pneumatic tailstock can be adjusted along the guide rails to meet the requirements of various kinds of welding. It adopts hand-operating screw rod to adjust. The workpiece is clamped pneumatically and rotates. The extension of the tailstock equipped with pneumatic fixture. The fixture clamps two ends of the workpiece tightly to ensure the uniformity of every clamping.

2.Workpiece Supporting Mechanism

The left and right sides of the machine installed V-shaped brackets to support the workpiece. The V-shaped brackets move up and down pneumatically, move up when clamping and move down when welding

 

3.Workpiece rotary device adopts servo motor. To change the rotating speed of the motor via adjusting the frequency. The rotating speed can be stepless adjusted and can be digital displayed in cm/min with low fault ratio, which is suitable for long-term use.

4.The oscillating mechanism and air cylinder adjustment.

The oscillating mechanism is responsible for driving the welding gun nozzle or tungsten electrode in precise lateral reciprocating motion during the welding process. This oscillating motion effectively widens the weld pool, making heat distribution more even, thereby ensuring uniform weld bead width. The cylinder primarily performs coarse adjustment and positioning of the welding gun. Especially before welding begins, it can quickly and stably push the entire welding gun assembly to the preset welding starting position. After welding is completed, the cylinder retracts the welding gun, facilitating workpiece loading and unloading, effectively improving the efficiency and safety of automated production.

5.PLC controlled system and HMI.

Japan made PLC is used as the core to control the clamping and welding programs. The system has a good stability and simple structure, which is easy to maintain.Adopts human-machine interface to alter the parameters. The welding time and weld length can be set via this interface. The alteration of the parameters can be input through the touch button conveniently and timely. Parameters can be stored and called.

Automatic round seam welding machine for water heater

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