Roller Coater Applying Roller Change for Safe Panel Painting
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Solution Overview
Problem
Existing roller coaters for painting solar panels face challenges in safely and efficiently replacing the applying roller without exposing operators to dangerous mechanical parts, leading to prolonged downtimes and nonconforming products due to worn or damaged rollers.
Innovation Solution
An apparatus with a lifting system that allows the applying roller to be replaced without touching mechanical parts, using protected covers and a PLC for control, ensuring safety and efficiency during downtimes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the applying roller is replaced by removing protective covers to access mechanical parts, then the replacement speed is improved, but operator safety deteriorates due to exposure to dangerous rotating mechanical parts
Solution Approach 1:
A lifting device acts as an intermediary tool between the operator and the applying roller. The device includes a lifting fork that engages with the roller, allowing operators to lift and replace the roller without direct contact with dangerous mechanical parts. This mediator enables safe roller replacement while maintaining reduced downtime.
2Manufacturing precision
If the applying roller is designed with a finely rectified surface for precise paint application, then manufacturing precision is improved, but reliability deteriorates because the surface is easily damaged by sharp glass edges
Solution Approach 1:
The applying roller is designed with a finely rectified surface specifically at the paint application contact area to ensure precise and uniform paint application. Other areas of the roller have more robust construction to resist damage from glass edges. This local differentiation of quality allows the roller to maintain precision where needed while being more durable overall.
3Object-affected harmful factors
If protective covers are permanently installed to protect operators from mechanical parts, then operator safety is improved, but ease of operation deteriorates due to the time required to remove and reinstall covers during roller replacement
Solution Approach 1:
The lifting device serves as a mediator that allows operators to work with the applying roller while protective covers remain in place. The lifting fork engages with the roller through designated access points without requiring cover removal, thus maintaining safety protection while improving operational convenience during roller replacement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates fast and safe roller replacement, maintaining production quality by preventing operator exposure to hazards and reducing downtime, ensuring uniform and precise paint application on glass panels.
Implementation Method 1
said applying roller being liftable by a lifting device
Implementation Method 2
The quantity of paint is adjusted through the variation of the pressure applied on the applying roller by the dosing roller
Implementation Method 3
a load cell system can be used, measuring the thrust force of the dosing roller onto the applying roller
Implementation Method 4
A pump withdraws paint from a tank, and paint is conveyed to a tank formed by said pair of rollers, which are pressurized
Data Source
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AI summary
Roller coater (1) for applying paint to mainly flat panels (8) provided with different lengths comprised between a minimum and a maximum length workable by said roller coater, comprising, in the direction of conveying of panels: - a feed roller (9), preferably coupled to a contrast roller (39); - an application head for applying paint, comprising an applying roller (3) and a dosing roller (11), said applying roller being preferably coupled to a contrast roller (33); - a conveyor (12) for the panels (8) to be painted, preferably in the form of a closed belt conveyor; According to the invention, - said applying head (9) is covered by its own cover (5), - said application head comprising said applying roller (3) and said dosing roller (11) being covered by a vertical cover (2) and a horizontal cover (6), which covers are removable, - a rotation support (15) wherein a corresponding end of said applying roller is rotatably mounted, each of which supports can be coupled and decoupled from the corresponding end of the applying roller, the working position of the applying roller being corresponding to the coupled condition of its ends in the corresponding rotation support (15) and there being provided a withdrawing position, - translation organs of said applying roller for withdrawing it along an L-shaped path; - which L-shaped path provides an initial translation in a substantially horizontal direction for disengaging it and distancing it in a radial direction of the ends of the applying roller from the corresponding rotation support and in the direction of the feed roller (9) and a successive translation in a lifting vertical direction, i.e. distancing it from said conveyor (12), which translation organs comprise a substantially vertical guide of said applying roller and a lifting organ of said roller and removable coupling terminals placed at the ends of said applying roller, - the interaxis distance between said feed roller (9) and said applying roller (3) being at least equal to the length of the path for the branch corresponding to said translation in a substantially horizontal direction of radial distancing of the ends of the applying roller (3) from the rotational supports (15), and shorter than the minimum length of the panels.