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    • 37. 发明申请
    • METHOD FOR CONTROLLING THE MELT STATE WHEN PRODUCING A PLASTIC WELD SEAM
    • 在生产塑料焊缝时控制熔融状态的方法
    • US20120230363A1
    • 2012-09-13
    • US13509337
    • 2010-11-11
    • Simon OttUlrich Gubler
    • Simon OttUlrich Gubler
    • G01K11/06
    • B29C66/95B29C65/02B29C65/04B29C65/08B29C65/10B29C65/1412B29C65/16B29C65/20B29C66/1122B29C66/43B29C66/73921B29C66/91211B29C66/91221B29C66/91421B29C66/954B29C66/961B29L2031/732
    • The invention relates to a method for determining the temperature-dependent state, in particular the melt state and/or the melt quantity of thermoplastic material when producing a weld seam (6), for example for joining thermoplastic parts (7, 7′) by means of a plastic welding device. For process control purposes, a temperature-dependent electric state variable of the thermoplastic material of the plastic parts (7, 7′) is measured continuously with and without applying heat to the plastic parts (7, 7′) along the weld seam (6) and compared to a target value or to benchmark values. In the method according to the invention, the electric state variable that is used is preferably the permittivity of the plastic parts (7, 7′). The permittivity is determined by means of the capacitor assembly (1) wherein the plastic material is used as the dielectric between the electrodes (3, 4) of the capacitor assembly (1). The capacitors (2) of the capacitor assembly (1) are preferably operated at different frequencies for the determination of the permittivity.
    • 本发明涉及一种用于确定温度依赖状态的方法,特别是当制造焊缝(6)时,例如用于将热塑性部件(7,7')连接到热塑性部件(7,7')时,热塑性材料的熔体状态和/或熔体量由 塑料焊接装置的装置。 对于过程控制目的,塑料部件(7,7')的热塑性材料的温度依赖性电状态变量是连续地测量的,而不是沿着焊缝(6)向塑料部件(7,7')施加热量 ),并与目标值或基准值进行比较。 在根据本发明的方法中,使用的电状态变量优选为塑料部件(7,7')的介电常数。 电容率通过电容器组件(1)确定,其中塑料材料用作电容器组件(1)的电极(3,4)之间的电介质。 电容器组件(1)的电容器(2)优选以不同的频率操作以确定介电常数。