Drawing assembly for drawing machines, provided with intermediate chains, and method for tensioning said intermediate chains
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United States of America Patent
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Oct 22, 2019
Grant Date -
Oct 13, 2016
app pub date -
Nov 24, 2014
filing date -
Nov 22, 2013
priority date (Note) -
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Abstract
A drawing assembly for drawing machines for metal products (B) comprises two tracks (11) opposite each other and counter-rotating that collaborate with said metal products (B) on opposite sides with respect to a drawing axis (X) to draw them along said drawing axis (X) The tracks (11) are disposed in a closed ring around respective support plates (13), and an intermediate chain (15) is interposed between the track (11) and the corresponding support plate (13). Each support plate (13) includes at least two guide segments (18; 118), lateral, having a convex shape externally mating with the curve of the intermediate chain (15). The drawing assembly (10) comprises, for each intermediate chain (15), an automatic tensioning device (21) provided with at least one thruster member (22) acting on a respective one of the guide segments (18; 118) in order to exert constantly upon it a distancing thrust, to keep it constantly in contact with the corresponding intermediate chain (15).
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