Electric telescopic hood with a pushing and pulling speed of 5-9m/min, air buffers at both ends and proximity switches; liners and air duct plates can be detached quickly for easy maintenance and cleaning; the purifier is directly connected to the capture hood to save floor space; built-in 1 to 4 sets of 100W lighting lamps to meet the internal mold maintenance needs; oil-resistant and flame-retardant dense curtains are installed under the movable and fixed hoods to prevent smoke overflow; the capture hood covers the punch area and is spliced with the robot maintenance platform; the control box has an indicator for the capture hood switch in place, and the capture hood action control is set to local/remote modes, with the operation screen placed in a convenient place for workers.