B - Operations – Transporting – 30 – B
Patent
B - Operations, Transporting
30
B
18/1049
B30B 7/02 (2006.01) B29C 35/02 (2006.01)
Patent
CA 1052960
ABSTRACT OF THE DISCLOSURE A web of unvulcanized rubber or other curable material moves intermittently in generally horizontal passes through several superposed stages of a multiplaten press by way of a pair of stretching stations flanking the press, each stretching station including a clamp and, with three or more curing stages, at least one deflection roller for the web. Each clamp has at least two jaws which are closable around one or more web passes and, together with the associated deflection roller or rollers, initially hold these passes substantially on the level of the midplanes of the spaces between the open press platens. From this position the jaws and rollers are jointly displaceable in a vertical direction (e.g. downwardly), after a stretching of the web by an outward movement of the clamps and/or the rollers, into a position in which the several passes come to rest simultaneously on the heated platens between movable spacing strips. The platens thereupon successively close in the opposite vertical direction (e.g. upwardly) to start the curing process. During or immediately after the press closure the clamps and rollers are returned to their original elevation so that the passes of the web lie again about midway between the platens when the press is reopened.
234352
G. Siempelkamp And Co.
Na
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