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Cuanto «loop» de material necesitas?

Conceptos para el control del Loop

Purpose: Material storage to supply the feed while the unwinder /decoiler/straightener accelerates to line speed. To absorb and store material while the unwinder decelerates after the feed stops; storage requirement is based on speed and feed length-vs.-acceleration rate of the unwinder.

The amount of material stored is equal to the total slack length minus the straight line length. Storage is increased by greater depth not length. Rule of thumb: 2 to 3 times feed length in slack for best operation. Types of Slack Loops include Horizontal, Overhead and paddle.

Loop Size and Accumulation Chart Using The Chart: Select material thickness and passline intersect LENGTH shows desired loop length and STORED shows amount of slack
Loop Depth Material Passline Height
Material Thickness	36″		48″		60″		72″
Material Thickness	Length	Stored	Length	Stored	Length	Stored	Length	Stored
0.032	3.8′	56″	3.8′	87″	3.8′	120″	3.8′	155″
0.063	7.3′	31″	7.6′	57″	7.6′	81″	7.6′	105″
0.090	9.6′	27″	10.4′	43″	10.7′	57″	10.8′	88″
0.125	12′	22″	13.2′	35″	14.1′	50″	14.6′	65″
0.156	13.7′	20″	15.3′	31″	16.5′	44″	17.4′	59″
0.187	15.2′	18″	17.1′	28″	18.6′	40″	19.8′	53″
0.212	16.4′	17″	18.5′	26″	20.2′	37″	21.6′	50″
0.250	18′	15″	20.3′	24″	22.3′	34″	24′	45″
0.312	20.3′	13″	23′	21″	25.4′	30″	27.4′	40″
0.375	22.4′	12″	25.6′	19″	28.2′	27″	30.5′	36″

Some newer coil feeding design concepts challenge conventional space and slack loop/pit requirements. Space saver coil feed lines are now available that incorporate an integrated reel, and powered feeder straightener combination. This design greatly reduces floor space requirements. Servo feeds integrated with pull through straighteners also offer opportunity for space savings but require careful evaluation of application parameters.

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