Method and apparatus for passing threadlike pieces through tubular products
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United States of America Patent
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-
Oct 22, 1991
Grant Date -
N/A
app pub date -
Mar 24, 1989
filing date -
Mar 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coil of a tube is formed. The coil is vibrated while a threadlike piece is passed in through the inlet end of the tube so that a given point of the tube reciprocates along a helical path. Provision is made to ensure that inlet end of the tube does not cause a portion of the threadlike piece upstream of and close to that inlet end to move diametrically while being fed into the tube. Provision is also made to form a coil of the treadlike piece, from which the threadlike piece is pulled out along the axis of the coil and fed to the inlet end of the tube by a conveying force resulting from the vibration of the coil of the tube. A feeder to supply the threadlike piece into the tube may be provided between the inlet end of the tube and a coil feeding device.
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