Cooling device for the drive for adjusting the needle of a needle valve nozzle in hot runner systems for injection molding machines

摘要

Cooling device for the drive for the adjustment of the needle (5) of a needle valve nozzle (3) in hot runner systems for injection molding machines, wherein the drive is mounted on the hot runner manifold (1) of the injection molding machine and wherein the drive housing (10), in which the drive is accommodated, is connected, on the side facing the hot runner manifold (1), with a heat sink (20) of the cooling device, which heat sink is formed as a separate part. According to the invention, the heat sink (20) of the cooling device is mounted on the side of the drive housing facing the hot runner manifold (1) without bearing the weight of the drive housing (10). The heat sink (20) is provided with through-holes, through which the supports (12), which are directly or indirectly connected to the hot runner manifold (1), can extend freely, to which supports the drive housing (10) is attached (FIG. 1).