Reciprocating motion mechanism adopting belt transmission

The utility model relates to a reciprocating motion mechanism adopting belt transmission. The reciprocating motion mechanism adopting belt transmission consists of a driving belt wheel 1, a driven belt wheel 2, a transmission flat belt 3, a shifting pin shaft 4, a reciprocating movement block 5 and a movement block guide rail 6. An 'n'-shaped shifting fork is arranged on the reciprocating movement block 5, and the shifting pin shaft 4 is arranged at the connector position 301 of the transmission flat belt 3 and installed in the 'n'-shaped shifting fork on the reciprocating movement block 5. When the driving belt wheel 1 rotates, the transmission flat belt 3 and the driven belt wheel 2 are driven to move, and the shifting pin shaft 4 on the transmission flat belt 3 shifts the reciprocating movement block 5 to achieve reciprocating motion.