Hot wedge welding device
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United States of America Patent
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Aug 16, 2016
Issued Date -
N/A
app pub date -
Feb 20, 2015
filing date -
Feb 25, 2014
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Abstract
A hot-wedge welding device for overlap welding plastic webs, comprising a hot wedge, a pressure device for pressing the plastic webs against the hot wedge which comprises a respective pressure unit associated with one of the hot-wedge flat sides, and further comprising two mutually opposing pressure rollers. The hot wedge is pivotably mounted on a bearing shaft by way of a bearing bushing, which extends between the two hot-wedge flat sides parallel to the hot-wedge front edge at a distance therefrom. The hot wedge is mounted to have defined degrees of freedom with respect to the bearing shaft in the longitudinal direction and in the transverse direction of the bearing bushing, which in addition to the rotational movement of the hot wedge about the transverse axis thereof, also allow a tilting movement of the hot wedge about the longitudinal axis thereof and a vertical displacement of the hot wedge.
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