Abstract: A manufacturing system for manufacturing rectangular frames of plastic material includes a horizontal frame welder configured to weld lengths of a plastic material together to form a rectangular frame. A corner cleaning station is configured to remove excess flash created in the welding process at the horizontal frame welder. A gantry is configured to automatically remove the rectangular frame from the horizontal frame welder after it is welded, move the rectangular frame to the corner cleaning station, and automatically place the rectangular frame in the corner cleaning station.

Abstract: An apparatus for manufacturing rectangular frames of plastic material includes an apparatus frame and welding heads. A material clamp cooperates with an associated frame member to hold the associated frame member in a desired location during a frame assembly operation. A heat plate is movably attached to each welding head. The heat plate can be selectively positioned to an operating position. The material clamp positions the associated frame member in close proximity to the heat plate to heat a set of ends of the associated frame member utilizing only radiation and convection of heat developed by the heat plate. The plurality of welding heads exert pressure on adjoining associated frame members after the heat plate is removed from the operating position in order to weld the adjoining associated frame members together to form a rectangular frame.