Patent ID: 8925356
Filing Date: 2015-01-06
Classification: D06B,D06P,G01N

Abstract:
1. An apparatus for performing optical readings on yarn spools subjected to dyeing in a dyeing tank or machine, the apparatus comprising: a spool with a pierced axial shaft placed in the dyeing tank or machine, said pierced axial shaft being on an outlet of a feedpipe of a feeding circuit that feeds a dyeing bath in the dyeing tank or machine, such that the dyeing bath enters the dyeing tank or machine passing by the feedpipe through the pierced axial shaft and is subsequently collected through a collecting conduit of the feeding circuit; a reflectance measuring optical detection means connected with electronic processing means, said reflectance measuring optical detection means comprising a reflectance measuring detector with an optical window located inside the dyeing tank or machine, a base of the spool being cyclically put in contact with said optical window, periodically, said spool being moved towards the optical window; and an actuator, cyclically, moving said pierced axial shaft and said base of the spool towards a part of the dyeing tank or machine where said optical window is located.