llos tubos de tinte. Las reservas de
hilo pueden enrollarse en un cuello con punta macho o en la punta hembra.
Estas reservas pueden utilizarlas aquellos que quieren pasar a una fileta
de soltura sin enrollado de retorno intermedio, a menudo llamado Envío
Directo. La mayoría de tintoreros deben utilizar un espaciador
de acero inoxidable para mantener la forma de las puntas de paquete
para permitir desenrollado suave. Re-enrollar a conos de papel y lubricación
intermedia es más común, pero cuesta tiempo y dinero.
Los teñidores exitosos han llegado a dominar la idea del envío
directo y omiten el enrollado de retorno.
Automatización en el Manejo de
Paquete
La tecnología para paquete robotizado ha estado disponible desde
hace más de una década. Proveedores tales como Gualchierani
han mostrado sistemas en el ITMA desde 1983. Conforme las tintorerías
adoptaban la automatización del manejo de paquete, los tintoreros
han debido insistir que el enrollado tenga densidad de paquete y uniformidad
más consistentes. Algunas compañías demandan actualmente
+/- 3 mm en el diámetro del paquete y +/- 7 gramos de peso.
La compresión de una serie de paquetes en un cono ayudará
a amortiguar pequeñas diferencias de densidad en la columna.
La densidad uniforme garantiza tasa de flujo del tinte pareja a lo largo
de todo el paquete y absorción uniforme del tinte durante el
ciclo.
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Automation
in Package Handling
The technology for robotic package handling has been available for more than
a decade. Suppliers such as Gualchierani have shown systems at ITMA since 1983.
As dye houses moved to automation of package handling, dyers have had to insist
that more consistent package density and uniformity be delivered from winding.
Some companies now demand +/- 3 mm in package diameter and +/- 7 grams in weight.
Compression of a series of packages on a spindle will help overcome small differences
on density along the column. Uniform density assures even dye liquor flow rate
through the package and uniform dye uptake during the cycle.
Robotics demands the ultimate in uniformity. Unlike human beings whose hand –eye
coordination allows us to reach a little further to get a yarn package; simple
robots expect the package to be in a very specific location. One example of
an attempt at cost savings was observed during a recent visit to a dye house.
The beautifully wound packages had been placed in the correct holes on a polymer
spacer pallet. The second spacer was added and packages filled each spacer
until ten or more layers had been built. However, the supporting polymer material
was not stiff enough to keep the packages uniformly straight up and down. Packages
on the corner of the pallet tilted slightly out of alignment, thereby causing
the robot to miss picking the corner package. The cardboard pallets however
were stiff and supported all packages uniformly. The polymer pallets were cheaper
and would certainly last longer than cardboard, but a few pennies saved initially
were lost in lower efficiency later on.
The Dye House
Low Liquor Ratio Dye Machines
In order to save energy, chemicals and water, machine vendors have designed
and redesigned dye machines to have the lowest practical liquor to goods ratio.
Not too many years ago, a 10:1 liquor ratio was the norm for large cylindrical
package dye machines. Today, vendors such as OBEM and Bellini have lowered
the ratio to 4:1. In the case of OBEM, they have achieved this miraculous reduction
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