Patent ID: 6874204

Claim:
An apparatus for optimization of adjustments for a regulated drawing unit for drawing at least one fiber band in a spinning preparation machine, said apparatus comprising: at least two roll-pairs having said at least one fiber band being receivable by said roll-pairs and said at least one fiber band being drawn between said roll-pairs; a control unit operably connected to at least one of said roll-pairs, said control unit controlling the speeds of said at least one of said roll-pairs; a first sensor operably located before said roll-pairs in a direction of travel of said at least one fiber band and in communication with said control unit, said first sensor taking measurements of band thickness of said at least one fiber band before said at least one fiber band is received by said roll-pairs; a second sensor operably located after said roll-pairs in the direction of travel of said at least one fiber band and in communication with said control unit, said second sensor taking measurements of band thickness of a first resulting fiber band for a first operational mode after said at least one fiber band has been drawn; a microprocessor operably disposed between said second sensor and said control unit, said microprocessor receiving said measurements of band thickness of said first resulting fiber band for said first operational mode; a memory in communication with said microprocessor, said memory storing information that includes measurements of band thickness of a prior or subsequent second resulting fiber band for a second operational mode, whereby said second operational mode represents a non-normal operational mode; and said microprocessor making a comparison of said measurements of band thickness of said first resulting fiber band to said measurements of band thickness of said second resulting fiber band and sending said comparison to said control unit, whereby said control unit controls the speed of said at least one of said roll-pairs to regulate said regulated drawing unit by making adjustments based on said comparison.