Automatic straight seam welding machine is designed for the convenience of straight seam welding up the production of special automatic welding machine. A full set of equipment is mainly composed of special welding machine, the positioning fixture, welding control system, etc.
(1). Welding form: argon arc welding;
(2). The workpiece material: stainless steel, carbon steel；
(3). For welding workpieces requirements: without a lot of oil, rust and other sundry; Consistency in meeting the requirements of the welding workpiece;
(4). This machine adopts the torch walk straight, welding torch along the linear motion of the works.

2. Machine tool main structure
Straight seam welding machine automatically by lathe bed, welding torch walking mechanism, under the gun, the control panel and electric control system.
This equipment adopts the accord with human body mechanics of lathe bed, work piece loading and unloading of convenient, with stable performance is good. The work piece in place, can make a series of welding process. After the completion of the automatic welding, welding torch automatically return, welding is complete. This machine is controlled by PLC programmable controller control center. The machine have simulated demonstration function.
(1) Lathe bed
The lathe bed using gb A3 steel processing and welding equipment, lathe bed structure is firm, sit steady;
(2) Welding torch walking mechanism
Used to implement automatic welding torch welding process, motor driver, roller screw transmission, high driving accuracy and the speed can be infinitely adjustable-speed; Welding torch institutions along the guide rail linear motion, trajectory linear uniform, A fine motor starting torque, output characteristic; The largest weldingwelding length is 1500 mm for this type;
(3) The gun body
The agency on the pneumatic gun into institutions, welding torch can be adjusted to 3D(up and down, left and right sides, back and forth motion and rotation), the amount of fluctuation can be fine-tuning of not less than 50mm, the left and right sides, front and rear can fine-tune the amount of not less than 50mm. For ease of loading
and unloading of work piece, the machine gun when welding, welding torch automatically drop to the welding position, welding, welding torch automatically return to the original position.

(4) The control panel institutions
The control panel adopts touch screen control panel, can adjust arc starting and arc length, welding speed, welding length and a series of parameter Settings;

(5). Electrical control system
The machine control system adopts PLC programmable controller, reach the designated position, automatic welding, automatic welding torch automatically in return, and a series of automated actions; Machine tool can be used for simulating the process parameters presentation; Welding arc position can be set, and can adjust.

3. The working principle and working procedure
(1). Put the workpiece on the mandrel is good, the use of pneumatic pressure on the workpiece on the mandrel of compaction in the position, will work to automatic transmission, motor speed have been set, press the start button (or stepping on foot switch), can be straight seam welding; After the completion of the welding torch automatically lift and return to the origin。
(2). Slightly adjust the welding torch position and Angle of welds; Note: the batch workpiece just for the first time
(3). Screw "welding choice" knob to "have" position;
(4). Stepping on foot switch or press the "start" button, welding torch automatically drops, machine automatic gas - arc, welding, reached predetermined position automatic arc welding - stop gas, welding torch automatically place;
(5). For another workpiece, make next welding cycle