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Functions of Overhead Conveyors in Powder Coating Equipment

June 15, 2017

Perhaps an amateur parts finisher is happy enough to manually transport a partially processed workpiece from the powder coating cubicle to the curing oven, but a professionally run business can't afford that kind of amateurish drudgery. No, a meticulously operated powder coating process requires overhead conveyors, systems that can efficiently couple every process station. Let's take a look at how these conveyors create a powder coating chain.

Overhead Conveyors: Fundamental Powder Coating Functions

Like a long assembly line, parts drift through the different powder coating stations with semi-automated speed. Pretreatment systems act as the gateway, with special chemicals cleaning residual coatings free from the workpiece. Surface-cleaned, the part enters a sealed cubicle, an enclosure that applies the dry powder via an electrostatic mechanism. Importantly, flow continuity is undisturbed, so that carefully applied dry coating adheres to the workpiece until it reaches the curing oven. Then, once in that hot receptacle, the powder flows and bonds itself to the part.

Productivity-Assured Workstation Coupling Systems

In paying so much attention to the coating technology, to the powder guns, convection ovens, and media recycling equipment, it's easy to forget the need for overhead conveyors. However, without these station bridging assemblies, process productivity cannot be properly assured. Imagine a factory floor that was several hundred metres long. All of the powder coating equipment is prepped, but there are no transportation linkages spanning the gear. At best, the loosely adhered powder will be disturbed by a poorly handled team member. At worst, well, the productivity factor will go right out the window as the dry coating procedure moves in starts and stops. No, an overhead conveyance system is needed if the business is to maintain process fluency.

Designing Suspended Transportation Solutions

The goal is to move the parts between the workstations at velocity, but not so fast that the dry powder is disturbed. Supported by hooks, by clamps and wire linkages, multiple workpieces are loaded before the pretreatment work commences. A rail, mounted on the ceiling, threads through the facility. It carries the spaced line of parts through the treatment room, past the dryers, into the powder coating cubicle, and into the curing oven. Looping out of the curing station, the finished parts are inspected and deposited in the shipping room, ready for their intended application.

Proprietary monorail overhead conveyors suit this application very well. Then there are chain-driven solutions and casters mounted on rails. Whichever system is selected, do maintain the linkages that tie each rail line to each processing stage. Otherwise, the applied powder coating could be jarred loose by something as seemingly trivial as an unlubricated conveyor roller.

GP Industries Pty Ltd

Head Office

1 Regal Court,
Vermont South VIC 3133

Phone: (03) 9802 1355

Fax: (03) 9802 6027

Email: gp_ind@bigpond.com

Factory

Factory G,
20 Burgess Road,
Bayswater North VIC 3153

Phone: (03) 9761 7676

Fax: (03) 9761 7671

Email: gpfactory@bigpond.com

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