Patent ID: 7112246
Filing Date: 2006-09-26
Classification: B05C,B25J,G05B,Y02P

Abstract:
1. A device for applying adhesive to a workpiece, comprising a nozzle head ( 18 ), which has an application nozzle ( 24 ) and can be supplied with a pressurized viscous adhesive, wherein the nozzle head ( 18 ) and the workpiece ( 14 ) are displaceable in relation to one another via robotic means ( 10 ) such that the adhesive, which is issued from the application nozzle ( 24 ), preferably as a spray jet ( 28 ), is applied to a workpiece ( 14 ) along a predefined line of application ( 36 ) in the form of a strip of adhesive ( 40 ), and wherein at least one camera unit ( 42 ), which is located on the nozzle head ( 18 ) or an associated robotic element, with lens directed towards the spray jet ( 28 ) or the adhesive strip ( 40 ), of which the output of said camera unit is connected to an image evaluation unit ( 45 ), wherein the image evaluation unit ( 45 ) includes an actual value memory ( 47 ) for continuous storage of the measured image data ( 40 ) as well as an impulse clock or a provider of position ( 57 ) along the application line ( 36 ) synchronizable with the actual value memory, and wherein the nozzle head ( 18 ) is a cyclone spray head, of which the application nozzle ( 24 ) is for emission of a coherent adhesive thread ( 28 ) and is drivable for rotating about an eccentric axis, and that a control device is provided for adjusting the nozzle rotation speed according to the value of the predetermined strip breadth along the application line ( 36 ), which can be acted upon by a tracking or adjusting signal derived from the image evaluation unit ( 45 ), determined by the deviation of the measured image data from the predetermined strip breadth.