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    • 3. 发明公开
    • VORRICHTUNG ZUM STUMPFSCHWEISSEN VON ROHREN AUS THERMOPLASTISCHEM KUNSTSTOFF
    • EP0793572A1
    • 1997-09-10
    • EP95940983.0
    • 1995-11-14
    • Richter, Ulrike
    • RICHTER, UlrikeHUFNAGEL, Wilfried
    • B29C65
    • B29C66/92921B29C65/2092B29C65/7802B29C65/7841B29C66/02241B29C66/1142B29C66/5221B29C66/73921B29C66/91411B29C66/9221B29C66/92443B29C66/9592B29C66/961
    • A butt-welding device for pipes made of thermoplastic materials has two pipe clamping units (4, 5; 6, 7) aligned with respect to each other of which one (4, 5) can be moved in the direction of alignment, together with the pipe end (2) clamped therein, by an electric motor (27) that actuates mechanical driving members (28 - 35). The reaction force corresponding to the advance force is helped up by the ground through a supporting framework (6, 7, 8, 13, 14) and the other pipe end (3) that is fixed in relation to the ground. The moving pipe end (2) can be pressed against the pipe end (3) clamped in the other pipe clamping unit (6, 7) with a force that can be measured by a measurement device (36). In order to obtain a predetermined, highly precise pressure curve regardless of changing ambient conditions, the torque of the electric motor (27) can be regulated in a closed control loop depending on measurement values supplied by a dynamometer, a manometer or a torquemeter (36) arranged on a mechanical driving member (34, 35) of the moving pipe clamping unit (4, 5), preferably on the driving member that immediately precedes said pipe clamping unit.
    • 用于对接热塑性塑料管道的装置包括两个管夹紧单元,它们相对于彼此齐平,用于夹紧管端。 两个单元中的第一个可以通过电动机和机械驱动元件在对准方向上移动。 对应于进给力的反作用力通过支撑结构支撑在底部,并且管端保持在相对于底部固定的两个单元中的第二个中。 保持在第一管夹紧单元中的移动管端部可以用夹持在第二管夹紧单元中的固定管端部以可测量装置测量的力压紧。 为了以更高的精度保持预定的压力进程,并且与环境条件的变化无关,电动机的转矩可以根据力,压力或转矩测量的测量值在闭合控制电路中进行调节 装置,其设置在移动管夹紧单元的机械驱动元件上,并且实际上优选地在直接连接在其上的驱动元件上。