Machine for the production of ornamental chains, in particular of the paired type
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United States of America Patent
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Feb 24, 1987
Grant Date -
N/A
app pub date -
Mar 29, 1985
filing date -
Mar 29, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A machine for the production of paired chains including a feeding assembly for the chains, a welding assembly of the chains and a take-up device for the produced chain. The feeding assembly for the chains includes a transport mechanism thereof suitable for the engagement within corresponding side by side links and for realizing the simultaneous and intermittent advancement without modifying the symmetry of their reciprocal position with respect to the advancement axis. The transport mechanism, constituted in particular of needle-shaped members, is provided with a translational reciprocating motion in the advancement direction and of a reciprocating lifting and lowering motion in an orthogonal direction. The welding assembly, constituted of two equal assemblies in series, provides for the simultaneous movement of means delivering the welding flame and the welding material. The take-up device operates synchronously with the feed of the chains in order to maintain constantly taut the chain during the welding. Finally, a mechanism is provided for synchronizing the several operating steps of the apparatus and for the control of the operative sequence.
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