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    • 74. 发明授权
    • Apparatus for feeding material to a metalworking machine
    • 用于将材料送入金属加工机器的装置
    • US4304347A
    • 1981-12-08
    • US97521
    • 1979-11-26
    • Heinz FinzerWolfgang Kessler
    • Heinz FinzerWolfgang Kessler
    • B21D43/11B21F23/00B23Q1/34B23Q5/50B23Q7/04B65H17/44
    • B21D43/11B21F23/00B23Q1/34B23Q5/50B23Q7/042
    • A feed apparatus for feeding material to a metalworking machine comprises two alternately operating gripping units; the first unit comprising a reciprocating transport gripper element which moves the material forward by steps; the second unit comprises a stationary non-return gripper element which retains the material during the return stroke of the transport gripper element. At least one of the elements can be operated in opposition to spring force by means of a pressure medium which can be displaced by a displacing means acting as an operating mechanism. At least one of the gripper elements is connected to a displacing means by a closed container which stores the pressure medium, the container having extensible wall sections to which the gripper element and the displacing means is connected.
    • 用于将材料供给到金属加工机的进给装置包括两个交替操作的夹持单元; 所述第一单元包括往复运动的夹持元件,所述往复运动夹持元件使所述材料向前移动; 第二单元包括固定的止回夹持元件,其在运送夹持器元件的返回冲程期间保持材料。 至少一个元件可以通过压力介质与弹簧力相反地操作,所述压力介质可以由作为操作机构的位移装置移位。 夹持器元件中的至少一个通过存储压力介质的密闭容器连接到移动装置,该容器具有可伸缩的壁部分,夹持元件和移动装置连接到该部分。