Powder Coated Tough - Fall/Winter 2007 - (Page 33) The NEW Generation Powder Gun Automatic and Manual The NEW C4 Generation gives you HIGHER: • EFFICIENCY • FLEXIBILITY • PRODUCTIVITY • COST SAVINGS Step Up to the Wagner Challenge The NEW Generation of Guns, call 800-473-2524 Style triggering is most effective for product that requires guns to be triggered at precise locations on a product or multiple times across a product. Rather than scanning the product to determine the leading and trailing edges only, sensors are used to identify the specific product style. This screen shows the style triggering control. Gun Positioning Coating performance is greatly affected by the position of the gun in reference to the product. If the product width varies greatly, guns need to be repositioned for proper target distance. Allowing the PLC to control this function reduces the workload on the user and enhances performance. Typical applications use light curtains to detect the width of the product as it enters the powder-coating booth. In a zone triggering system, the product passes through the booth, the guns are positioned in or out to maintain an optimal target distance. The positioning equipment can be pneumatic or electric motor driven. Positioning parameters are entered into the PLC through the operator interface similar to the zone triggering parameters, although normally not having negative values. This prevents the guns from being in a position that could cause a collision. Style Based. In a style based system, the positioning devices may be programmed to override the actual profile of the product. Also, if the positioning devices have more than a single axis, the guns can track with the product as it passes. Inserting guns into cavities and recesses is a common application. Articulated robots are sometimes employed to target difficult areas. Program parameters are passed to the robot controller from the PLC as the product style changes. Product Identification. Automatic gun triggering and positioning is dependent on the accuracy of the product identification. Photo eyes, light curtains, ultrasonic sensors, and others are employed to supply information to the PLC. www.wagnersystemsinc.com Powder Coated Tough 33 http://www.wagnersystemsinc.com http://www.wagnersystemsinc.com http://www.airblastinc.com http://www.airblastinc.com
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