Yaa Comprehensive Written Report On Loom Timing

Comprehensive Study on Loom Timing

Raju Tex
Production Executive, B.J.Group
Chittagong Textile Engineering College
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Loom Timing
Loom timing is defined every bit relative chronological sequences of diverse primary too secondary motions are expressed inwards damage of marking of crank shaft rotation. The loom timing is presented past times a diagram termed every bit “Loom Timing Diagram”. The diagram depicts the outset too halt of each primary number of dissimilar weaving motions. The outset too halt of events are influenced past times loom type, cloth width too cloth type. The loom timing is shown inwards the Figure.

Loom Timing Diagram

The timings of almost of the events inwards the loom wheel are governed past times the seat of the reed too therefore the sley. For example, the reed must locomote on its means towards the dorsum of the loom earlier the shed is large plenty to acknowledge the shuttle. This determines the timing of the picking mechanism which is directly related to the seat of the reed too sley.

Some others are related to it indirectly. For example. the timing of the weft intermission halt displace is related to the flying of the weft carrier, which is governed past times the seat of the reed. The timings on the weaving machine are stated inwards relation to the angular seat of the crankshaft (main shaft) which operates the sley.

The path traced out past times the axis of the crank pivot is called the ‘crank circle’.„ The arrow on the crank circle shows the green direction of rotation of the crankshaft. When the crank too crank arm are inwards line, too the sley is inwards its almost frontwards position.

The crank circle is graduated inwards degrees from this point inwards the management of rotation of the crankshaft.  Any timing tin locomote stated inwards degrees, as, for example, ‘healds flat at 3000’

Looms are provided amongst a graduated disc on the crankshaft and a fixed pointer to brand settings inwards relation to the angular position of the crankshaft. With the reed inwards its almost frontwards position, the disc is adjusted so that the pointer is contrary to 00 on the graduated scale. The loom may too then locomote turned to whatever desired seat manually, the disc turning amongst it too the pointer remaining vertical too indicating the angular seat of the crank shaft. In modern looms amongst microprocessors, the principal shaft position is displayed on a screen, but the setting regulation remains same.

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