In-mould automatic-shearing pouring gate mechanism

The invention relates to an in-mould automatic-shearing pouring gate mechanism applied into a mould. The in-mould automatic-shearing pouring gate mechanism comprises an oil cylinder, a first ejector plate, a second ejector plate and a pouring gate cutting needle, wherein the oil cylinder is arranged on the two sides of a mould and is fixedly connected with a foot pad; the first ejector plate is arranged above a lower fixing plate and comprises a first upper ejector plate and a first lower ejector plate, and the first ejector plate is provided with an ejector pin which is used for ejecting products; the second ejector plate is arranged above the first ejector plate, is connected with the oil cylinder and comprises a second upper ejector plate and a second lower ejector plate, and the oil cylinder drives the second ejector plate to eject and return; and one end of the pouring gate cutting needle is arranged in the second ejector plate, and the other end of the pouring gate cutting needle is contacted with a pou