Time-saving demolding device

The invention provides a time-saving demolding device, which comprises an upper mold plate and a lower mold plate, wherein a positioning column is arranged between the upper mold plate and the lower mold plate, and a fixed mold plate is fixedly arranged on the upper mold plate; a movable mold plate is fixedly arranged on the lower mold plate, and a top plate is fixedly arranged on the lower mold plate; a first spring and a second spring are arranged on the top plate, and an ejector rod and a third guide column are arranged between the first spring and the second spring; the ejector rod, the third guide column, the fixed mold plate and the movable mold plate are buckled to form an injection molding groove, and the ejector rod is provided with a barb; the adhering boundary between the ejector rod and the movable mold plate is an arc. The time-saving demolding device provided by the scheme can omit the arrangement of a sliding block by utilizing the motion curve of the ejector rod, so that the demolding process