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    • 10. 发明授权
    • Apparatus for welding thermoplastic materials
    • 热塑性材料焊接设备
    • US6009925A
    • 2000-01-04
    • US19517
    • 1998-02-05
    • William A. HallArnold Tobler
    • William A. HallArnold Tobler
    • B29C65/00B29C65/04B29C65/78B32B31/20
    • B29C65/04B29C65/7882B29C66/73921B29C66/81263B29C66/81821B29C66/81831B29C66/81881B29C66/8322B29C66/91411B29C66/91443B29C66/9161B29C66/919B29C66/91921B29C66/91935B29C66/91951B29C66/9221B29C66/9241B29C66/1122B29C66/24B29C66/43B29C66/944B29C66/9592Y10T156/1702
    • An improved apparatus and method for joining two or more thin sheets of thermoplastic materials along a welded seam includes a welding assembly and a means for feeding the thermoplastic sheets to the working area of the welding assembly. The welding assembly includes a heated platen welding press coupled with a welding tool, an energy generator electrically connected to the welding tool and control means electrically connected to the welding press, the welding tool and the energy generator. The welding press includes a pair of opposed platens, means for heating each of the platens and pressing means for displacing at least one of the opposed platens in the thickness direction of the thermoplastic sheets. Pressure is applied to the thermoplastic sheets by using the pressing means to displace at least one of the heated platens in the thickness direction of the thermoplastic sheets. Heat produced by the heating means is then transferred to the thermoplastic sheets by the heated platens to raise the temperature of the thermoplastic sheets in the area of the welded seam to a first predetermined temperature which is below the softening temperature of the thermoplastic materials. High frequency energy produced by the energy generator is then conducted to the thermoplastic sheets by the welding tool to raise the temperature of the thermoplastic sheets in the area of the welded seam to a second predetermined temperature which is above the softening temperature but below the melt point of the thermoplastic materials. Conduction of the high frequency energy is then discontinued so that the thermoplastic sheets fuse together along the welded seam under applied pressure. Application of the pressure is then discontinued so that the welded thermoplastic sheets may be removed from the welding assembly.
    • 一种用于沿着焊接接合两个或多个热塑性材料薄片的改进的装置和方法包括焊接组件和用于将热塑性片材供给到焊接组件的工作区域的装置。 焊接组件包括与焊接工具联接的加热的压板焊接压力机,电连接到焊接工具的能量发生器和电连接到焊接压力机,焊接工具和能量发生器的控制装置。 焊接机包括一对相对的压板,用于加热每个压板和加压装置的装置,用于在热塑性片材的厚度方向上移动至少一个相对的压板。 通过使用压制装置将压力施加到热塑性片材上,以在热塑性片材的厚度方向上移动至少一个加热的压板。 由加热装置产生的热量然后通过加热的压板转移到热塑性片材上,以使焊缝区域中的热塑性片材的温度升至低于热塑性材料的软化温度的第一预定温度。 由能量发生器产生的高频能量然后通过焊接工具传导到热塑性片材,以将焊缝区域中的热塑性片材的温度升高到高于软化温度但低于熔点的第二预定温度 的热塑性材料。 然后中断高频能量的传导,使得热塑性片材在施加的压力下沿焊缝熔合在一起。 然后停止施加压力,使得焊接的热塑性片材可以从焊接组件移除。