Front pressing block mechanism of plastic bag folding device

A front pressing block mechanism of a plastic bag folding device comprises a rack, a front pressing block, a pressing block driving air cylinder and a front supporting plate, the front pressing block is installed at the bottom end of a piston rod of the pressing block driving air cylinder, and the pressing block driving air cylinder is installed above the rack through an air cylinder support; the front supporting plate is installed on a longitudinal rail in a sliding mode, and the longitudinal rail is installed on the machine frame. The utility model has the advantages that the structure is greatly simplified, the manufacturing cost is reduced, faults are not easy to occur, and the maintenance cost is reduced. 一种塑料袋折叠装置的前压块机构，包括机架、前压块、压块驱动气缸和前托板，前压块安装在压块驱动气缸的活塞杆的底端，压块驱动气缸通过气缸支架安装在机架的上方；前托板滑动安装在纵向轨道上，纵向轨道安装在机架上。本实用新型的优点是：大大简化了结构，降低了制造成本，不容易出现故障，降低了维护成本。