Automatic tobacco braiding machine

The invention discloses an automatic tobacco braiding machine and belongs to a tobacco processing machine. The automatic tobacco braiding machine comprises a main machine (1) and a fixed machine frame (2), wherein a power device is mounted on the main machine (1); the power device is subjected to circuit control of a control system (3); the fixed machine frame (2) has a sliding way (4); and the main machine (1) is arranged in the sliding way (4) through a sliding device and the main machine (1) can slide in the sliding way (4). A motor unit drives a transmission device to make two catching impellers rotate forward and backward; when the braiding machine operates to accomplish braiding operation, the main machine constantly slide in the sliding way at a constant speed, so the braided tobacco is uniform in density and the braided tobacco avoids falling and other problems in a curing process; and the control system controls the motor unit to open and close, so that the braiding machine can ...

Computer controlled crystal thyratron rectifying arc welding power supply

A computer controlled crystal thyratron rectification arc welding power supply has a rectification unit using thyristor circuit with balance reactor and a control unit composed of synchronous signal generator, sampling amplifier, A/D converter, conduction angle controller and computer. The digital values corresponding to welding current and voltage are compared with presettings in computer and the control angle of main crystal thyratron in feeding circuit is determined based on an algorithm and then converted into synchronous trigger pulse to trigger relative crystal thyratron, so controlling welding current and voltage.

Computer-controlled transistor commutating arc welding power source