Coating Powder Supply Device With Suction Line And Fluidizing Unit
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Solution Overview
Problem
Existing coating powder supply devices often fail to maintain consistently high quality of coating due to variations in powder delivery and measurement, leading to uneven coating on workpieces.
Innovation Solution
A coating powder supply device with a holder for the powder feeder that is not weighed by scales, a controller to evaluate measuring signals for powder quantity, a suction line to remove air from the storage container, and a fluidizing unit to improve powder flow, ensuring consistent powder delivery and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the powder feeder is weighed by the scales to measure powder quantity, then the measurement system is simple, but the measurement precision deteriorates due to disturbances from powder flow and air currents
Solution Approach 1:
The patent extracts the powder feeder from the weighing system by placing it on a separate holder that is not weighed by the scales. Only the powder storage container is weighed, separating the measurement function from the powder delivery mechanism. This eliminates measurement disturbances caused by powder flow and air currents in the feeder while maintaining a relatively simple overall device structure.
Solution Approach 2:
The system is segmented into distinct functional components: the powder storage container (weighed), the holder (stationary support), and the powder feeder (not weighed). This segmentation allows the weighing function to focus solely on powder quantity in the storage container, improving measurement precision while keeping the device structure manageable through clear functional separation.
2Stability of the object's composition
If air is not removed from the powder storage container, then the device structure is simple, but the powder delivery uniformity deteriorates due to air pockets and inconsistent flow
Solution Approach 1:
The suction line is configured to remove air from the powder storage container before powder feeding begins. This preliminary action of air removal prepares the system for consistent powder flow by eliminating air pockets that would otherwise cause delivery variations. The suction line connects to the bottom of the container to efficiently extract air without adding significant structural complexity.
3Manufacturing precision
If a fluidizing unit is not used, then the device structure is simpler, but the powder flow consistency deteriorates leading to uneven coating quality
Solution Approach 1:
The fluidizing unit uses pneumatic principles to introduce air through a fluidizing plate at the bottom of the powder storage container. This pneumatic action fluidizes the powder, ensuring consistent and uniform powder flow to the feeder. The unit is integrated into the container structure with minimal additional components, achieving improved coating quality consistency without substantially increasing device complexity.
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
The solution ensures a consistent and high-quality coating by maintaining precise powder quantity control and uniform delivery, enhancing the uniformity of the coating process.
Implementation Method 1
the coating powder supply device according to the invention comprises a suction line to suck air out of the powder storage container
Implementation Method 2
the powder storage container has a fluidizing unit
Data Source
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AI summary
The apparatus has powder conveyors (15, 18) e.g. compressed-air-operated injector, conveying powder (4) out of a powder-storage container (2), and a set of scales (8) weighing the powder located in the powder-storage container. The scales are arranged beneath the powder-storage container. A lifting arrangement moves the powder conveyors upward and downward, where the powder conveyors are provided with intake pipes (14, 17). A control unit (24) evaluates a measuring signal (S8) of the set of scales to determine the quantity of powder in the powder-storage container. Independent claims are also included for the following : (1) a powder-coating installation comprising a powder-storage container for providing powder for a coating-powder-supply apparatus (2) a method for operating a coating-powder-supply apparatus (3) a method for operating a powder-coating installation.