Compact continuous over end take-off (OETO) creel with tension control
A tension control and tension technology, applied in thin material handling, knitting, textiles and papermaking, etc., can solve problems such as large equipment footprint, increased manufacturing cost, entanglement, etc.
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example 1
[0102] The test equipment used to acquire data in this example or in the examples below can be constructed in various ways, such as optionally including or excluding certain design elements and changing the order of certain elements. Figure 17 The apparatus configuration implemented in Examples 1 to 5 is shown, adapted from US Patent 6,676,054 (Heaney et al.). Such as Figure 17 As shown, the apparatus consists of the following elements: fiber package 10 , static guide 20 , first driven roll 30 , tension sensor 40 and driven take-up roll 50 .
[0103] The shape and structure of the test equipment and the test conditions of other experiments are summarized as follows:
[0104] The distances between the static guide and the first driven roller, between the first driven roller and the tension sensor, and between the first driven roller and the take-up roller were 0.22 meters, 1.94 meters and 2.2 to 3.4 meters, respectively. In this example, the first driven roller, which had a...
example 2
[0110] The same test equipment as described in Example 1 was used, but constructed to more closely conform to Figure 17 Preferred embodiment of OETO uncoiler design shown. The apparatus has the following elements, represented in the order in which they meet the moving filament: fiber package, restricted rolling guide, static guide, restricted rolling guide, first, follower roller, restricted rolling guide Primer, tension sensor and driven take-up roll.
[0111] The distances between the static guide and the first driven roller, between the first driven roller and the tension sensor, and between the first driven roller and the take-up roller were 0.43 meters, 0.51 meters and 2.43 meters, respectively. The first driven roller was an individual roller having individual grooves with a depth of 0.38 mm. The wire is again maintained in a horizontal plane. The distance between the package and the first guide was kept constant at 0.65 m and the angle θ was varied. The wire draft ...
example 3
[0116] This series of tests using the test apparatus described above and constructed as in Example 2 evaluated the effect of angle on thread tension in fibers of different viscosities. The distance d between the package and the static guide was kept constant at 0.65 meters. The wire draft was maintained at 4x by controlling the surface speeds of the first driven roll and take-up roll at 68.6 m / min and 274.3 m / min, respectively. All other experimental conditions were the same as described in Example 2. The data are summarized in Table 3.
table 3
[0117] The high viscosity fibers tested in this series of tests were the same as two of the fibers tested in Example 2. A comparison of the data in Tables 2 and 3 for these same fibers shows that thread tension increases with increasing angle, and that thread breakage can occur at extremely high angles. (In contrast, fibers containing polish can run at angles up to and including 90° without an increase in filament tension, wi...
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