Hot runner hot nozzle with single piston and multiple valve needles

The invention discloses a hot runner hot nozzle with a single piston and multiple valve needles. The hot runner hot nozzle comprises the piston body and the valve needles. The piston body is providedwith the 3-6 valve needles. The number of the piston body is one. The valve needles penetrate through the piston body and a hot nozzle body. The diameter of each valve needle is one-seventh to one-ninth of the inner diameter of the piston body. According to the hot runner hot nozzle with the single piston and the multiple valve needles, the diameter of valve needles in the prior art is reduced, and the density of the valve needles in the piston body is increased so that one piston can drive the multiple valve needles. The more the number of pistons is, the higher the cost is, and the larger the maintenance difficulty is. The number of the pistons is reduced, and the production cost and maintenance cost can be reduced. 本发明公开了一种单活塞多阀针的热流道热咀：包括活塞本体和阀针，所述活塞本体设有3-6根阀针，所述活塞本体的数量为1个，所述阀针贯穿所述活塞本体和热咀本体，每根所述阀针的直径是所述活塞本体内径的1