| 摘要 |
<p>In an apparatus for reshaping or molding tubular envelopes of fluorescent lamps or the like into an annular form, an improvement in or relating to a pulley-shaped mold assembly is disclosed which assembly comprises a pair of separable mold half sections which, when mated together, define an annular groove around the periphery of the mold assembly around which is wrapped an envelope sufficiently heated to a workable or reshapable condition so as to be shaped into the annular form. The molding head of the apparatus comprises two mold assemblies of the type described so that two envelopes may be simultaneously shaped into an annular form. Each mold assembly is divided into a pair of half sections by a vertical plane at right angles to the axis thereof in such a way that one of the half sections located closer to the other mold assembly has a thickness shorter than that of the other half section so that the distance between the paired heads holding tubular envelopes may be shortened with the resultant reduction in overall dimensions of the reshaping apparatus and annular fluorescent lamp manufacturing machine.</p> |
