Film tightening and deviation preventing mechanism

The utility model relates to the technical field of film material conveying, and particularly discloses a thin film tightening and deviation preventing mechanism which comprises a discharging wheel, a conveying wheel and a driving mechanism. The fixed guide rollers are provided with limiting spaces for the thin film to penetrate through; the elastic tightening assembly is used for driving the thin film to be tightly attached to the fixed guide roller adjacent to the elastic tightening assembly; and the material pulling assembly is used for pulling the thin film. The film tightening and deviation preventing mechanism can effectively solve the problem that an existing film conveying device is prone to loosening and deviation. 本实用新型涉及膜材输送技术领域，具体公开一种薄膜收紧防偏机构，包括：放料轮，所述放料轮用于释放薄膜；若干固定导向辊，所述固定导向辊设有供所述薄膜穿过的限位空间；弹性收紧组件，所述弹性收紧组件用于驱使所述薄膜紧贴与所述弹性收紧组件相邻的固定导向辊；拉料组件，所述拉料组件用于拉动所述薄膜。本实用新型提供的薄膜收紧防偏机构，能有效解决现有薄膜输送设备容易松垮和跑偏的问题。