This utility model discloses a hot
nozzle structure for inverted molds suitable for products with high appearance requirements. It includes a hot
nozzle body, a
nozzle head, a nozzle core, and a valve pin. A heating
copper sleeve is fitted around the outside of the hot nozzle body. The upper and lower ends of the nozzle core extend beyond the nozzle head, and a first heat insulation cap is embedded in the lower end of the nozzle core. A sealing
bushing is fitted around the outside of the heating
copper sleeve, with its lower end extending to the lower end of the nozzle core and interfering with the outer side of the nozzle core. A
water jacket is fitted around the outside of the sealing
bushing, with a gap between the sealing
bushing and the
water jacket. A second heat insulation cap is fitted at the lower end of the sealing bushing, with its bottom lower than the bottom of the
water jacket and abutting against the inner wall of the mold opening frame. The beneficial effects of this utility model are: it can prevent the
water circulation within the water jacket from carrying away heat, causing heat loss and affecting the molding quality of the product, resulting in poor appearance; it can effectively seal the nozzle, ensuring the temperature of the hot nozzle body, nozzle head, and nozzle core, and guaranteeing the appearance quality of the product.