Reversible Paint Spray Tip Flag for Saddle Seal Alignment
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Solution Overview
Problem
Reversible tip assemblies for airless paint spraying face challenges in efficiently and cost-effectively aligning and inserting the saddle seal due to limited accessibility and the need for visual alignment, leading to inefficiencies and increased costs in manufacturing and operation.
Innovation Solution
A reversible paint spray tip with a tip flag featuring a handle and alignment portion, where the alignment portion is integrally formed with a saddle seal retaining portion and tapers to fit the barrel bore, allowing for friction fit and alignment without visual inspection, enabling efficient insertion and alignment of the saddle seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tapered rod-like object is used to hold the saddle seal, then the saddle seal can be held during insertion, but the saddle seal is not held in alignment and can shift during insertion, requiring visual inspection and alignment correction
Solution Approach 1:
The patent introduces a tip flag with a flag bore as an intermediary tool. The flag bore is tapered to receive the saddle seal and includes alignment features (such as a keyway or flat surface) that ensure proper orientation. This intermediary device holds both the positioning and alignment functions, eliminating the need for visual inspection during assembly.
Solution Approach 2:
The alignment features are pre-formed in the tip flag during manufacturing. The flag bore is tapered and includes alignment elements before assembly, so that when the saddle seal is inserted, it is automatically guided into the correct position and orientation without requiring subsequent visual adjustment.
2Ease of operation
If a projection is machined on the end of the barrel to hold the saddle seal, then the saddle seal can be held, but the manufacturing cost increases due to metal machining and visual inspection is still required
Solution Approach 1:
The tip flag is made from inexpensive polymer material that can be easily molded. Instead of machining metal projections, the alignment features are formed during the molding process. The tip flag serves as a disposable or replaceable component that simplifies assembly and reduces manufacturing costs.
Solution Approach 2:
The patent changes the material parameter from metal to polymer for the tip flag, and changes the formation method from machining to molding. This parameter change enables cost-effective manufacturing while maintaining the alignment function through the tapered flag bore and integrated alignment features.
3Ease of operation
If a tool with stepped boss is used to hold and rotate the saddle seal, then the saddle seal can be firmly held, but visual alignment and correction are still needed if the saddle seal comes out of alignment when the tool is withdrawn
Solution Approach 1:
The tip flag acts as an intermediary that remains in place during the entire assembly process. Unlike removable tools that may allow misalignment upon withdrawal, the tip flag's tapered bore with alignment features ensures the saddle seal maintains proper alignment throughout insertion and remains aligned when the flag is withdrawn.
Solution Approach 2:
The alignment features in the tip flag's bore provide self-aligning capability. The saddle seal automatically orients itself correctly within the tapered bore with alignment elements, eliminating the need for operator intervention or visual inspection to ensure proper alignment.
4Manufacturing precision
If visual alignment is required for saddle seal installation, then alignment can be achieved, but the process becomes inefficient and time-consuming
Solution Approach 1:
The tip flag with its tapered bore and alignment features serves as a mechanical intermediary that provides automatic alignment. This eliminates the need for visual inspection, allowing assembly workers to simply insert the saddle seal into the flag-guided position, significantly improving assembly efficiency while maintaining precision.
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 allows for efficient and cost-effective alignment and insertion of the saddle seal, eliminating the need for visual alignment and reducing manufacturing costs by using a polymer for the tip flag, ensuring smooth operation and preventing interference with the tip holder components.
Implementation Method 1
The alignment portion may be inserted into a transverse bore of the tip holder until the alignment portion friction fits within the transverse bore
Data Source
AI summary
A reversible paint spray tip, including a barrel portion configured to be inserted into a barrel bore of a tip holder, and a tip flag portion attached to the barrel portion and positioned generally transversely of the barrel portion. The tip flag portion includes a handle portion defining a handle axis, integrally formed with a first end of the tip flag portion, and an alignment portion defining an alignment axis, integrally formed with a second and opposing end of the tip flag portion. The handle axis and the alignment axis are non-collinear and intersect at an angle relative to the handle portion to prevent interference of the handle portion and barrel portion with one or more guards of the tip holder when the alignment portion is positioned in the barrel bore while in an alignment position.