Apparatus for welding thermoplastic materials
    1.
    发明授权
    Apparatus for welding thermoplastic materials 失效
    热塑性材料焊接设备

    公开(公告)号:US6009925A

    公开(公告)日:2000-01-04

    申请号:US19517

    申请日:1998-02-05

    摘要: 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.

    摘要翻译: 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。

    Pin table
    2.
    发明授权
    Pin table 失效
    针脚表

    公开(公告)号:US5063800A

    公开(公告)日:1991-11-12

    申请号:US408706

    申请日:1989-09-18

    IPC分类号: A41H15/00 B26D7/01

    摘要: A method and apparatus for supporting sheet material such as cloth during operations thereon such as cutting wherein a pattern is placed on a supporting surface provided with a plurality of pins extending through apertures in the surface, the pins are lowered below the surface for removal of the pattern whereupon sheet material is placed on the surface, typically a plurality of plies being layed up in a stack, and simultaneously the pins are moved through the sheet material to maintain alignment and matching of the plies in the stack. The pattern then is placed on the sheet material in a position determined by the location of the pins, and the material is shaped such as by cutting. A plurality of separate pin holding and supporting devices of narrow width are spaced lengthwise along the apparatus and independently movable lengthwise toward and away from each other. Pins of adjacent rows can be closely spaced together thereby achieving a grid pattern wherein the pins are relatively closely spaced. There is provided apparatus for developing a positive pressure which is employed to apply a flotation force to sheet material on the surface to facilitate movement of the material along the surface, apparatus for developing a negative pressure which is employed to apply a hold down force to sheet material on the surface to facilitate operating on the material, and apparatus for controlling selection of positive or negative pressure so developed.

    摘要翻译: 一种用于在诸如切割的操作过程中支撑诸如布的片材的方法和装置,其中图案放置在具有延伸穿过表面中的孔的多个销的支撑表面上,销在表面下方降低以除去 图案由此将片材放置在表面上,通常将多个层叠放置在堆叠中,并且同时使销移动通过片材以保持堆叠中的层的对准和匹配。 然后将图案放置在由销的位置确定的位置上的片材上,并且材料通过切割成形。 多个单独的狭窄的销保持和支撑装置沿着装置沿纵向间隔开,并且可以纵向和远离彼此独立地移动。 相邻行的引脚可以紧密地间隔在一起,从而实现网格图案,其中销相对紧密地间隔开。 提供了用于显影正压的装置,其用于将表面上的片材施加浮选力以促进材料沿表面的移动,用于显影负压的装置用于向片材施加压紧力 表面上的材料以便于在材料上操作,以及用于控制如此开发的正压或负压选择的装置。