Timing belt cold roll forming machine and cold rolls of pipe machine

摘要

Provided is a cold rolling forming machine which can provide low noises and can retain the setting environment in a cleaning state without the need for grease in a power transmission mechanism. The cold rolling pipemaking machine (1) is provided with multiple stages of roller forming supports (10) which are arranged on the conveying direction and perform cold rolling forming on blanks in stages. Each stage of each roller forming support includes a driving belt pulley (34) driven by a driving motor; a lower roller being squarely to the conveying direction of the blanks and performing the cold rolling forming on the blanks; a lower roller shaft directly connected with the driving belt pulley and arranged on the lower roller; an upper roller being opposite to the lower roller over the blanks and performing the cold rolling forming on the blanks together with the lower roller; an upper roller shaft arranged on the upper roller; a driven belt pulley directly connected with the upper roller shaft; a synchronous belt wound on the driving belt pulley and the driven pulley to transmit the rotating force of the driving belt pulley to the driven belt pulley, and an assist belt pulley wound on the synchronous belt and being capable of adjusting the position of the driven belt pulley with respect to the driven belt pulley.