SUBSTRATE LIFT PIN ACTUATOR

Implementations described herein provide a lift pin actuator. The lift pin actuator has a housing. The housing has an interior volume. A track is disposed in the interior volume and coupled to the housing. A center shaft is at least partially disposed in the interior volume of the housing. A guide is movably coupled to the track. At least one internal bellows is disposed in the interior volume, the internal bellows form a seal between the center shaft and the housing. An elastic member is disposed in the interior volume and configured to apply a force that retracts the center shaft into the housing. An inlet port is configured to introduce fluid into the interior volume between the internal bellows and the housing. The fluid generates a force opposing the elastic member to extend the center shaft relative to the housing. 本文中描述的实施方案提供种升降杆致动器。所述升降杆致动器具有外壳。所述外壳具有内部容积。轨道设置在所述内部容积中并耦接到所述外壳。中心轴至少部分设置在所述外壳的所述内部容积中。导向件可移动地耦接到所述轨道。至少个内波纹管设置在所述内部容积中，所述内波纹管在所述中心轴与所述外壳之间形成密封。弹性构件设置在所述内部容积中，并配置用于施加使所述中心轴回缩到所述外壳中的力。入口端口被配置