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    • 3. 发明授权
    • Hot melt dispenser and method of making its melt body
    • 热熔胶机及其熔体制作方法
    • US4014464A
    • 1977-03-29
    • US639074
    • 1975-12-09
    • Albert Eugene NewtonRichard Montgomery Elliott
    • Albert Eugene NewtonRichard Montgomery Elliott
    • B05C5/04B05C17/005B29B13/02B67D5/62
    • B05C17/00546B29B13/022
    • In a dispenser or applicator of heat softenable material, a melt body has a generally conical melting chamber extending between an inlet and a relatively smaller outlet passage, at least one by-pass interconnected to the melting chamber by a plurality of spaced, radial bores arranged to conduct hot melt from successive outer "layers" of the material as it is being progressively softened, reduced and liquefied in the chamber for flowing to the outlet, and at least one axial auxiliary channel extending between the outlet and the smaller end of the melting chamber for conducting the central core of the last-to-be melted end portion of the material. Preferably the body has a pair of by-passes, a pair of auxiliary channels, encloses a heater, and is of configuration facilitating its economical construction in one piece.The method aspect features casting or otherwise providing a one-piece melt body of a metal, such as an aluminum alloy, to provide a main conical melt chamber and a cavity for a heater, boring one or more by-passes in the casting from its outlet and toward its inlet end and substantially parallel and adjacent to at least a portion of the outer wall of the melt chamber, boring an axial auxiliary channel to interconnect the outlet to the smaller end of the melt chamber, drilling the casting radially to provide substantially aligned holes interconnecting a by-pass with the melt chamber, inserting an element for instance a plug or ball as by press-fitting in an outer end of each hole, and sealing the outer ends of said holes, preferably simultaneously, by swedging external metal of the casting in overlapping retentive relation to the exterior portions of the elements.
    • 在可热软化的材料的分配器或涂抹器中,熔体具有在入口和相对较小的出口通道之间延伸的大致锥形的熔化室,至少一个旁路通过多个间隔开的径向孔互连到熔化室, 以在材料的逐渐软化,减少和液化以便流出到出口处的材料的连续的外层“层”中进行热熔融,以及至少一个轴向辅助通道,其在出口和较小的熔化端之间延伸 用于传导材料的最后熔化端部的中心芯。 优选地,主体具有一对旁路,一对辅助通道,包围加热器,并且具有便于其经济构造的一个构造。