The MULETTO model welding robot is made of electro-welded sheet steel and steel profiles, machined and subjected to rigorous normalization treatments, so as to guarantee high precision, combined with excellent rigidity and resistance to mechanical stress. The light alloy welding gun enhances the handling and dynamic welding performance. Regulation of the welding cycle – It is entrusted to a sophisticated electronic device: J-TEK automatic control, with a microprocessor which provides for the timing, synchronous with the mains frequency, of the various phases of the cycle (approach, welding, pulse repetition , cold time and holding), and to the regulation of the welding current by means of 2 SCR diodes. It is possible to prepare a wide range of welding cycles with different parameterizations, within which each single working point can be specified. Rotating workpiece holder table – The machine can be equipped, as an option, with different models of workpiece-holder table with the dual function of collaborating in accessing the machining points and, at the same time, reducing processing times, allowing operations to be carried out loading-unloading in parallel with the production activity of the machine. Single rotary tables are available, with a rotation pitch of 180 degrees; composite tables, with a rotation pitch of 120 degrees. Axis movement – The robot is equipped with 2 Cartesian axes corresponding to X and Y and an electrode holder head rotation (optional). The movements are carried out by recycled ball pads, along precision guides in case-hardened steel.

Welding gun – In light alloy, it has been specifically sized to withstand the mechanical stresses of the welding punch and, by means of a support trolley, it is moved along the entire work area. Inside it houses the welding transformer, single-phase, which concurs with the secondary circuit to generate the welding current flow. It offers the possibility to house the three-phase or medium frequency transformer as an option to carry out particular types of welding. Control unit – Microprocessor structure, with 5 axes, with various possibilities for managing the trajectories: point to point, linear interpolation, all with the possibility of fly-mode on intermediate points of the path.

Manual movements according to the robot axes, coordinates referred to the tool center (TCP). Field programming for self-learning, i.e. via built-in personal computer or via other remote personal computer. Program storage online via EEPROM memory and offline on magnetic diskettes via built-in disk-driver.

The system provides, among other things, the possibility of integration with other automatic machines, within flexible processing lines. (FMS). The control unit is also equipped with a constant current welding control with a microprocessor, with 15 programs, which provides for timing synchronous with the mains frequency of the various phases of the cycle (approach, welding, pulse repetition , cold time and maintenance) and to the regulation of the welding current by means of partialization on a formation of controlled diodes. It is possible to prepare a wide range of welding cycles with different parameters, within which each individual job can be specified. The cabinet is complete with a magnetothermic switch.