Page 79 - Industrial Cutting of Textile Materials

66 Industrial Cutting of Textile Materials

Multibelt cradles
Multibelt cradles are designed from several narrow conveyor belts that cover the full
width of the cradle (Fig. 6.4).This type of cradles are used on spreading machines the
most often. They are good for processing heavy fabric rolls as prevent roll jumping on
the cradle during spreading. They are good to perform automatic winding and rewind-
ing of fabric. Their design is simpler comparing with single belt cradles.
However, their technical assistance is more complicated. Narrow belts on a multi-
belt cradle can break easier than a wide belt of a single belt cradle. In case of necessity
to replace one of the narrow belts, tension of all other belts has to be adjusted as well.
If fabric has loose threads, they can entangle with the belts, and the fabric can stack.
Processing very light materials, the fabric can weave on the cradle (it curves in be-
tween separate belts) and thus makes problems for automatic winding. Then, a special
plate have to be fixed under the belts to avoid the problem.
Multibelt cradle feeding system is used on spreaders manufactured by most part of
2
6
4
3
5
8
companies, such as Lectra, Gerber, Eastman, Bullmer, Kuris, Morgan Technica,
and others.
Single conveyor belt cradle
In case of a single belt cradle, only one conveyor belt covers full width of the cradle
(see Fig. 6.5). These kinds of cradles are used on spreading machines less often. Their
design is more complicated comparing with multibelt cradles. However, they are good
to lay delicate and very light fabrics; as the surface of the single belt cradle is homog-
enous, it supports the fabric better, and it is more gentle to the fabric being spread. The
single belt cradles can perform automatic winding and rewinding of the fabric better
than the multibelt cradles.
10
8
1
The single belt cradles are used on Cosmotex, Morgan Tecnica, IMA SPA,
spreading machines.

Fig. 6.4 Multibelt cradle on a spreading machine.