The machine uses belt to convey and feed paper automatically and transport on one side to guarantee precision. It resolves destabilizing factors of manual feeding and the speed when grooving. The machine is suitable for making rigid boxes, book covers, wine box, mobile phone box (electronic products), jewellery box, moon cake box and so on. This machine is mainly used for making V and U type groove on ash cardboard, copperplate paper, glossy paper, mounted cardboard, paper board and MDF board etc.