Abstract:
Systems and methods for resolving inefficiencies when applying spray adhesive and activator from a two-component, handheld spray gun are provided. One embodiment of the two-component, handheld spray gun apparatus includes a first nozzle and a second nozzle coupled to a common bracket. The first nozzle and the second nozzle each include a spray valve and orifice for dispensing an amount of liquid adhesive or liquid activator from the respective nozzle using only line pressure. Further, a trigger coupled to the first and second nozzles is used to simultaneously dispense the adhesive and activator during spraying. In embodiments, the first and second nozzles dispense adhesive and activator at a particular angle such that an amount of dispersed adhesive intersects an amount of dispersed activator to provide a combined spray pattern on a surface.
Abstract:
A method of dynamically changing stitch density of a quilting pattern during sewing is provided. Embodiments of the invention include dynamically changing stitch density along an axis of a sewing pattern based on identifying sewing pattern elements, which may include line segments and arc segments. Each of the line segments and/or arc segments is assigned a dynamically adjusted stitch density based on analysis of each pattern element and/or adjacent element. An adjusted stitch density is assigned to portions of pattern elements that satisfy a threshold measurement for sewing with an adjusted stitch density. In embodiments, a standard stitch density, intermediate stitch density, or an altered stitch density is automatically assigned to each portion of a sewing pattern based on an analysis of threshold length of an element, a threshold angle of a portion of the element with respect to the axis, and/or the stitch density assigned to an adjacent element.
Abstract:
Systems and methods for producing consistent spray patterns and for diminishing clogging experienced when applying spray adhesive from a spray gun are provided. One system includes an automatic non-atomizing spray valve operably coupled to a first and second flow valve. The spray and flow valves are electronically controlled using logic running on a processing unit. The logic is programmed to carry out a spray cycle that involves dispensing a first liquid from the spray valve (first phase) and then dispensing a second liquid through the same spray valve (second phase). Because the first liquid (e.g., water-based adhesive) has the potential to clog a nozzle of the spray valve, a short burst of the second liquid (e.g., cleaning fluid) is introduced to prevent the nozzle from clogging. The spray valve is configured as a pulse width modulated spray gun to further reduce clogging and to generate an evenly distributed spray pattern.