Stock guides and automatic waste discharge system comprising same

The invention provides stock guides and an automatic waste discharge system comprising same. Each of the stock guides comprises a guide plate mounting frame, a middle guide plate and an edge guide plate, wherein the guide plate mounting frames are used for respectively mounting the stock guides on a left support and a right support of the automatic waste discharge system; the middle guide plates are arranged on one sides of the guide plate mounting frames close to the center of a material guide belt of the automatic waste discharge system, and the middle guide plates are upwards and outwards inclined relative to the center of the material guide belt; the edge guide plates are connected to the other sides of the middle guide plates, and the edge guide plates are close to the sides of waste ports; the automatic waste discharge system comprises the left support, the right support, the material guide belt and two stock guides. The stock guides, provided by the invention, have the advantages of simple structure, convenience for manufacturing, low cost and capability of preventing the edges of the stock guides from leaking materials, sliding wastes on the material guide belt, and adjusting the widths of the stock guides through mounting holes of the guide plate mounting frames, and is suitable for the waste ports of different widths.