Menu Content/Inhalt
ELKOMETER III PDF Print E-mail

Yarn imperfection tester for broken filaments and thick places

ELKOMETER III
ELKOMETER III
The ELKOMETER III enables detection of all forms of thick places in mono- and multi-filament yarns. It also detects so called "tight spots" in textured yarns, as well as broken filaments and filament loops. The measuring principle is based on mechanical feeling of the yarn thickness and is unaffected by moisture, dyeing and the dielectric constant of the yarn material.

The essential components of the equipment are the feeler head, which is located on top of the cabinet, and a yarn draw-off device with nip rolls and drive motor. As an option, up to 16 feeler heads can be arranged to test up to 8 yarns in parallel. The test speed of up to 600 m/min is adjustable in steps. The drawn-off yarn is exhausted into a waste-yarn collection chamber via a suction device.

Yarn draw-off device
Yarn draw-off device
The yarn can be tested by selecting either continuous or non-continuous operation. In the latter case, the yarn draw-off device stops when the feeler head detects a fault. As a result, the yarn fault comes to a standstill in the control zone between feeler head and feed rolls, so that it can be removed and examined accordingly. Testing at continuous yarn feed, i.e. without stoppage, is used for instances where preliminary trials have already shown the nature of yarn faults detected by the feeler head, thus making the assessment of individual thick places unnecessary.

Control Panel
Control Panel
A control panel enables the entering of testing mode, yarn test length and speed. These inputs are processed by a micro-controller, which also controls the speed and monitors the feeler heads. Yarn test length and the number of recorded faults are shown on the display.

ELKOTASTER feeler heads
ELKOTASTER feeler heads
The ELKOTASTER F feeler head enables detection of broken filaments and filament loops in multifilament yarns. It is equipped with three measuring channels that have a triangular cross section and different depths. During the passage of a fault, a feeler pin that rests on the measuring channel is deflected, triggering an electrical impulse, which actuates the fault counter and, if required, interrupts the transport of the yarn.

The ELKOTASTER F is less suited for detecting thick yarn places in the form of undrawn yarn sections, foreign matter content and tight spots in textured yarns. For detecting such faults, the ELKOTASTER T feeler head is appropriate.

The ELKOTASTER T consists of two ceramic pins, the first of which is stationary, the other being parallel to it and displaceable. The gap width between the two pins is steplessly adjustable to accommodate the count of the yarn and the fault size. Here too, the passage of a thick yarn place deflects the movable pin, which triggers an electrical impulse. As the ELKOTASTER T simulates a needle eye, it is  often used for testing sewing- and embroidery yarns. The response of the ELKOTASTER T to broken filaments is, however, limited. To ensure detection of all faults, a combination of Type F and T feeler heads is recommended, in which the yarn runs through both heads in succession.

Testing method

Mechanical thickness detection 

Detection of thick places and broken filaments or filament loops in mono- or multifilament yarns as well as "tight spots" in textured yarns through mechanical sensing of the yarn thickness.

System components

Yarn feed:

Feed cylinder with nip roll, electronically controlled servo-drive for yarn speeds up to 600 m/min

Feeler heads:

ELKOTASTER F1 for 20 - 800 dtex

ELKOTASTER F2 for 500 - 3000 dtex

ELKOTASTER T for 20 - 3000 dtex

Feeler head bridge:

For mounting 1, 2, 4 or 8 ELKOTASTER T and/or 1, 2, 4 or 8 ELKOTASTER F (12 on request)

Further technical data

Mains supply:

220 V, 50 (60) Hz, current requirement 1 A

Compressed air supply:

5 bar, 100 l/min

Dimensions:

Height 1220 mm, width 750 mm, depth 830 mm, weight approx. 80 kg

The above technical contents can be subject to changes by Textechno.
 
< Prev   Next >
[ Back ]