Device for fastening together the parts of a heat-insulated composite section
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United States of America Patent
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Mar 3, 1987
Grant Date -
N/A
app pub date -
May 23, 1984
filing date -
May 27, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for fastening together the parts of a heat-insulated composite section consisting of two metal sections and of at least one insulating rod has knurling rollers that shape exterior groove webs, forces them against the insulating rod, provides them with a knurled strip. The knurling roller has conical, toothed, circumferential surfaces. The bottom land between each pair of teeth parallels the conical circumferential surface. The knurling rollers are mounted in a tensioning mechanism that consists of two annular disks in such a way that it can be displaced along its axis. It can be displaced 0.5 to 1 mm to each side out of an intermediate position. The axial flotation make it possible to compensate for errors in alignment between the knurling roller and the composite section that occur while the groove webs are being shaped as a result of undesirable superimposition of the tolerances of the separate parts. The knurling rollers are mounted in such a way that they cannot rotate on powered shafts. They advance the composite section, which is also guided by horizontal and vertical guide rollers, through the device.
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