Dual Container Powder Coating Apparatus for Rapid Color Change
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Solution Overview
Problem
The existing powder coating systems face significant productivity losses due to lengthy color change operations, as manual cleaning of equipment is time-consuming and automated systems are not efficient enough to reduce color change times effectively.
Innovation Solution
An apparatus with two containers that can alternate between operative and cleaning positions, allowing simultaneous cleaning of one container while the other is in use, along with automated refilling and movement of powder stocks, enables efficient color changes by reversing container positions and automating operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual cleaning operations are performed on containers and delivering devices during color change, then cleaning precision is improved, but color change time increases significantly
Solution Approach 1:
The system divides the powder handling into multiple containers (first container, second container, third container) that can be independently cleaned and operated. This segmentation allows one container to be cleaned while others are in use, eliminating the need to stop production for cleaning operations.
Solution Approach 2:
Containers are pre-cleaned and prepared in advance before being put into service. The cleaning operations are performed preliminarily on containers that are not currently in use, so that when a color change is needed, a clean container is already ready to be deployed immediately.
2Loss of time
If automated cleaning systems are used for containers, then color change time is reduced, but cleaning effectiveness is insufficient
Solution Approach 1:
The system uses the powder flow itself to clean the containers and delivering devices. Powder is circulated through the system and automatically cleans the surfaces it contacts, eliminating the need for separate manual or automated cleaning operations while maintaining continuous operation.
Solution Approach 2:
The system discards powder from containers that have been in use and recovers it through the delivering device and collection system. This recovered powder is then reused, and the circulation process simultaneously cleans the containers, achieving both time efficiency and cleaning effectiveness.
3Device complexity
If a single container is used for powder storage, then device complexity is reduced, but productivity decreases due to downtime during color changes
Solution Approach 1:
The system uses multiple containers (first, second, and third containers) instead of a single container. This segmentation allows continuous operation where one container serves while others are being cleaned or prepared, eliminating production downtime during color changes and significantly improving productivity.
Solution Approach 2:
The system operates in periodic cycles where containers are alternated between service and cleaning/preparation phases. While one container is in use, another undergoes cleaning or powder replacement, creating a continuous periodic rhythm that maintains constant productivity without interruption.
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
This solution significantly reduces the time required for color changes, allowing for a succession of color changes in shorter intervals and improving overall plant productivity by automating cleaning and refilling processes.
Implementation Method 1
Due to electrostatic effect, the powder adheres to the objects
Data Source
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AI summary
The present invention concerns a device (1) for the powder coating of an object (100), and a related operative method for carrying out a color change. The apparatus (1) comprises: - at least a first and a second container (10, 20) for painting powder; - means (5) for the movement of said first and second container (10, 20) between an operative position (P1, P1', P1") and a cleaning position (P2, P2', P2"), configured so that, when said first container (10) is in the operative position (P1, P1'), said second container (20) is in said cleaning position (P2, P2"), and so that when said first container (10) is in the cleaning position (P2, P2'), said second container (20) is in the operative position (P1, P1"); - means (4) for cleaning a container (10, 20), which are configured to empty and clean said first or said second container (10, 20), when said first or second container (10, 20) is in the cleaning position (P2, P2', P2"); - means (3) for withdrawing painting powder from said first or second container (10, 20), when said first or second container (10, 20) is in the operative position (P1, P1', P1"), and for feeding it to a device (3c) for delivering painting powder onto an object (100) to be painted.