In-line needle bar arrangement for tufting machines
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United States of America Patent
Stats
-
Oct 22, 1996
Grant Date -
N/A
app pub date -
Mar 14, 1994
filing date -
Mar 14, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An in-line needle bar arrangement for tufting machines (10) for tufting a selected fabric. A pair of needle bars (12A,B) are provided with registered faces (20) configured to engage one another such that the needles (14) carried thereby are positioned to define a single row of needles (14). Each one of the needles (14) is substantially similar to each of the others such that only one configuration of needle (14) is required. A plurality of filaments (16) are provided, one each for one each of the plurality of needles (14). Each filament (16) is engaged by one of at least two feed control rollers (18). Each of the rollers (18) is controlled independently from the other in order to accomplish different feed rates by each. By varying the feed rate of the yarn (16), the pile height is proportionately varied, thus varying the pile height of the respective tufts. A master control (24) is provided for coordinating the control of each of the individual rotation imparting devices (22) and the relative and combined movements of the individual needle bars (12A,B). A needle bar spacing device (42) is provided for moving the down-line needle bar (12B) out of and into engagement with the up-line needle bar (12A). When spaced apart, one or both of the needle bars (12A,B) may be transversely adjusted as required.
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