Anti-collision device for large-format ink-jet printer

The utility model discloses an anti-collision device for a large-format ink-jet printer. The anti-collision device comprises a first supporting plate and a second supporting plate, a supporting sheet is mounted between the first supporting plate and the second supporting plate; a mounting plate is arranged between the first supporting plate and the second supporting plate, and a travel switch is fixed to the mounting plate. A spring is installed between the first supporting plate and the second supporting plate. The device is simple in structure and is mounted on two sides of a trolley of the printer, and the first supporting plate and the nozzle are on the same level; when the printer prints back and forth, if a medium is wrinkled, the first supporting plate firstly touches the wrinkled part, the travel switch transmits a signal to the trolley, and the trolley is suddenly stopped; friction between the nozzle and wrinkles is prevented, and the service life of the nozzle is prolonged. When two steel plates are