Mistake proofing type sprue

The utility model discloses a mistake proofing type sprue, including cope, bottom boxd, its characterized in that: still including setting up sprue in the cope, setting up the base that waters in thebottom boxd, expose outside the cope upper end of sprue, the bottom of sprue with water the base and dock after cope and bottom boxd mould assembling, the sprue on cup jointed the pouring basin, the external diameter of internal diameter and sprue of pouring basin consistent, pouring basin sliding connection on the sprue. The utility model discloses the wearing and tearing that the sprue dislocation leads to in the time of can avoiding penetrating sand improve sprue life greatly, avoid watering the shift simultaneously, application effect is good, the sprue wearing and tearing at the excessivespeed and owing to water defects such as blowholes that the shift leads to, sand inclusion when effectively having solved molding machine production. 本实用新型公开了种防错型直浇道，包括上砂箱、下砂箱；其特征在于：还包括设置于上砂箱内的直浇道、设置于下砂箱内的浇道底座，所述直浇道的上端露出于上砂箱外