B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/972
B29C 65/20 (2006.01) B29C 37/04 (2006.01)
Patent
CA 1062863
ABSTRACT OF THE DISCLOSURE: A method for producing plastic sections welded to- gether by their ends, in which the sections are clamped, the end-surfaces thereof are heated by being brought against a heat reflector, the softened ends are brought together under pressu- re, and the weld bead is machined off. The method comprises the guiding of the sections externally as far as the edges of the weld, leaving the fusion area exposed, and pressing the softened end-surfaces of the sections together until external guides al- most come together, thus restricting the formation of the weld bead and making it possible to scrape the bead off while it is still hot. The device comprises a clamping device, displacea- ble carriages, and a heat reflector. The sections to be welded together by their ends are clamped to the carriages, and have their end-surfaces pushed against the heat refecctor by moving one or both carriages, and the softened ends being pressed to- gether after the heat reflector has been withdrawn. Bars equip- ped with blades run parallel with the end-surfaces of the sec- tions. The bars are used to clamp the sections, which are secu- red between the bars in a manner such that the blades extend along the sections almost to the edges of the weld.
194771
Aust Heinrich
Budich Wolfgang
Nowak Heinz
Primessing Franz
Dynamit Nobel Aktiengesellschaft
Na
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