Sack forming device

The utility model provides a sack forming device. The problem of current 3D package machine -shaping in -process forming device structure complicated, the transmission is unreliable is solved. It includes forming die and at least one forming mechanism, corresponding welding mechanism of each forming mechanism, forming mechanism include first shaping subassembly, second shaping subassembly and third shaping subassembly, first shaping subassembly locate the below between second shaping subassembly and the third shaping subassembly, welding mechanism include first weld assembly and second weld assembly, forming mechanism and welding mechanism two positions of installation and processing all have. The beneficial effects of the utility model are that, through a forming mechanism and a welding mechanism's position change, can be quick, reliable, convenient be processed into 3D package with the cloth for the product processing control of being convenient for, the transmission action is reliable, product machining ef