Apparatus for texturizing yarns and the like
阅读：689发布：2022-03-11
专利汇可以提供Apparatus for texturizing yarns and the like专利检索，专利查询，专利分析的服务。并且Improved technique for texturizing synthetic filaments, fibers and yarns by the application of high frequency impact thereto to impart bulk and/or stretch characteristics, each impact being applied to the yarn at an acute angle with respect to its axis and in such a way that each fiber or filament is peened asymmetrically on one side to cause curling or bending while at the same time being advanced through the texturing zone by the impact, and between impacts the yarn is fully released by the impact applying members in the zone so that the yarn can assume a relaxed position whereby any build up of twisting of the yarn is avoided.，下面是Apparatus for texturizing yarns and the like专利的具体信息内容。
1. Apparatus for texturizing synthetic fibers in a yarn, comprising: a. means for passing the yarn in a substantially straight line path through a texturizing zone; b. opposed texturizing members in said zone on opposite sides of said yarn and including on at least one member multiple striations disposed across the path of the yarn and having edges extending toward the yarn, said edges terminating in a common plane of the associated texturizing member which plane lies parallel to said path; c. means for vibrating said one member to reciprocate it along a vibratory axis disposed at an acute angle to said straight line path to alternately peen the yarn which is backed by the opposed other member and then retract out of contact with the yarn; and d. said vibrating means reciprocating the member at a rate which is at least sonic and at an angle and amplitude such that the impacts of said edges on the yarn fibers produce cusps therein which permanently distort their cross-sections and provide nonnormal vector stresses about the axis of the yarn, said impacts further tending to advance the fibers through said zone.
2. In apparatus as set forth in claim 1, said acute angle lying within the range of 2* through 45*.
3. In apparatus as set forth in claim 1, the opposed other member comprising a smooth-surface fixed plate disposed with respect to the yarn so that it is just out of contact with it when said one texturizing member is retracted out of contact with the yarn.
4. In apparatus as set forth in claim 1, yarn heater means preceding said texturizing zone, and said opposed members comprising metal plates of opposed area which is large as compared with the longitudinal spacings between said edges, whereby the plates impact each length of yarn many times as it passes through said zone and cool the yarn during contact therewith.
5. In apparatus as set forth in claim 1, said vibratory rate being ultrasonic and said opposed members comprising plates of opposed area which is large as compared with the maximum separation between plates when reciprocated, whereby a high degree of air turbulance is generated among said striation edges to dither the yarn and spread its fibers across the surfaces of the plates for greater exposure to impact.
6. In apparatus as set forth in claim 1, adjustable drag means disposed to act on the yarn ahead of said texturizing zone and chill roll means pulling the yarn through the drag means and tensioning it in said zone.
7. In apparatus as set forth in claim 1, the striations in said member being disposed at an angle other than a right angle to the straight line travel of said yarn such that the impacts of said edges in the fibers are non-perpendicular with respect to their longitudinal axes.
8. In apparatus as set forth in claim 1, said other texturizing member having multiple striations disposed across the path of the yarn and having edges extending toward the yarn; and means for vibrating said other member to reciprocate it along another vibratory axis disposed at an angle to the path of the yarn travel, said vibratory axes both intersecting said path.
9. In apparatus as set forth in claim 8, the striations on both members having saw-tooth shapes as viewed in cross-section and all disposed alternately to bite into the yarn fibers to advance them through the zone and to scuff free of the fibers when retracted during reciprocation of said members.
10. In apparatus as set forth in claim 8, said edges on the responsive oppoSed members being staggered out of mutual contact whereby the fibers are asymetrically peened thereby as the members are reciprocated.
11. In apparatus as set forth in claim 1, said other texturizing member having multiple striations shaped to mate with the striations of said one member; and means for supporting and vibrating said other member to reciprocate it along a vibratory axis which is colinear with said first-mentioned vibratory axis and in the opposite direction from the reciprocatory motion of said one member alternately to peen the yarn between said members when advanced toward the yarn and to release it when retracted therefrom.
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