US Patent 7364775 Closed loop adhesive registration system
Patent 7364775 was granted and assigned to Nordson Corporation on April, 2008 by the United States Patent and Trademark Office.
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An apparatus and method use closed loop control processes to automatically adjust a command signal used to change an operating state of a fluid dispensing gun. Proportional, integral and/or derivative control processes are used to determine an operating parameter comprising on time compensation, off time compensation and/or a fluid pressure compensation. An adjustment is made to the operating parameter if a number of consecutive measurements of an adhesive bead characteristic are outside of a predetermined tolerance range. A sensor for producing a feedback signal is used to communicate a measurable difference between an actual and a desired bead characteristic. The feedback signal applied in real time is used when determining the operating parameter, reducing substrate waste and increasing efficiency.
US Patent 07364775 Closed loop adhesive registration system US Patent 7364775 Closed loop adhesive registration system
US Patent 07364775 Closed loop adhesive registration system
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