Cartridge Feed Tube Cleaning via Annular Flow Path
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Solution Overview
Problem
In paint refilling devices for cartridges, paint residue accumulation leads to reduced painting quality and poor rotation due to adhesion on rotary shafts and air motors, causing frequent cleaning needs and potential device damage.
Innovation Solution
A paint refilling device with an annular flow path between the feed tube and the feed tube insertion hole, utilizing a feed tube cleaning pipeline and a pipeline switching valve to circulate cleaning fluid and prevent paint residue accumulation, ensuring efficient cleaning of the feed tube and surrounding areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the painting machine is reduced in size by reducing the gap between the rotary shaft and feed tube, then the painting machine size is reduced, but paint residue accumulates on the rotary shaft and feed tube
Solution Approach 1:
The patent extracts the harmful paint residue from the system by introducing a cleaning fluid circulation system. The cleaning fluid is supplied to the gap between the rotary shaft and feed tube, dissolves and removes paint residue, and returns it to the paint supply system for disposal, thereby preventing accumulation on critical components
Solution Approach 2:
The patent introduces cleaning fluid as an intermediary substance between the rotary shaft and feed tube. This cleaning fluid acts as a mediator that facilitates the removal of paint residue without requiring direct mechanical contact or disassembly of the tightly fitted components
2Volume of moving object
If the gap between rotary shaft and feed tube is reduced to minimize painting machine size, then compactness is improved, but paint adheres to the rotary shaft causing poor rotation
Solution Approach 1:
The patent applies preliminary action by continuously circulating cleaning fluid through the gap between the rotary shaft and feed tube before paint residue can accumulate to problematic levels. This preventive cleaning approach maintains rotation performance without requiring larger clearance gaps
Solution Approach 2:
The cleaning fluid circulation operates continuously during painting operations, ensuring that paint residue is constantly removed from the rotary shaft surface. This continuous cleaning action maintains reliable rotation performance throughout extended operation periods
3Manufacturing precision
If frequent cleaning operations are performed to remove paint residue, then painting quality is maintained, but productivity is reduced
Solution Approach 1:
The system performs self-service cleaning by automatically circulating cleaning fluid through the paint supply system during normal operation. The cleaning function is integrated into the painting process itself, eliminating the need for separate manual cleaning operations and maintaining productivity
Solution Approach 2:
The cleaning fluid circulation operates continuously during painting operations, ensuring that paint residue is constantly removed from critical components. This continuous cleaning maintains painting quality without interrupting production flow
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
Prevents paint residue from affecting painting quality and air motor rotation, reducing the need for frequent cleaning and maintaining device integrity by effectively cleaning the feed tube and surrounding components.
Implementation Method 1
an annular flow path, extending from a base end side towards a front end side in the insertion direction, is disposed between the feed tube of the cartridge and the feed tube insertion hole of the cartridge supporting member
Data Source
AI summary
The present application relates to a cartridge paint refilling device. More specifically the subject matter of the application relates to cleaning the paint adhered to the feed tube of the cartridge and prevent reduction of the painting quality and undesirable rotation caused by the paint residue. An annular flow path extending from a base end side towards a front end side in the insertion direction is disposed between the feed tube of the cartridge and the feed tube insertion hole of the cartridge supporting member. The cartridge supporting member is provided with a feed tube cleaning pipeline whose upstream side is connected with the circulation pipeline disposed at the cartridge supporting member and whose downstream side becomes a cleaning fluid discharge port and pens at the base end side of the annular flow path; and a pipeline witching valve which blocks communication between the circulation pipeline and the feed tube cleaning pipeline when the paint and the cleaning fluid are supplied to the paint chamber of the cartridge, and enables communication between the circulation pipeline and the feed tube cleaning pipeline when the cleaning fluid is supplied to the annular flow path.