Rotary Atomizer Head Removable Functional Member Design
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Solution Overview
Problem
Existing rotary atomizer heads for electrostatic paint applicators face challenges in internal cleaning without disassembly, ensuring proper positioning of functional members, and preventing paint residue and bubble formation during coating.
Innovation Solution
A rotary atomizer head design featuring a bell-shaped atomizer head body and a functional member made of synthetic resin, with a spoon-cut groove and claws for secure attachment, eliminating the need for an elastic ring and preventing paint from entering the clearance between components, thus allowing for efficient internal cleaning and bubble-free coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an elastic ring is used to fix the hub member to the atomizer head body, then the hub member can be removably fixed, but paint can enter the clearance between the hub member and atomizer head body, causing cleaning difficulties
Solution Approach 1:
The patent removes the elastic ring from the structure, eliminating the clearance that allows paint to enter. The hub member is directly fitted to the atomizer head body without intermediate components, preventing paint accumulation while maintaining removable fixation capability.
Solution Approach 2:
Instead of using an elastic ring to create a removable connection that inadvertently creates clearance, the patent inverts the approach by using a direct fit structure where the hub member is inserted into a recess of the atomizer head body, achieving both secure fixation and paint prevention.
2Device complexity
If the hub member is fixed with an elastic ring, then assembly is simplified, but the functional member positioning precision deteriorates
Solution Approach 1:
The patent inverts the fixation approach by eliminating the elastic ring and using a direct fit structure where the hub member is inserted into a precisely dimensioned recess in the atomizer head body, achieving both simple assembly and high positioning accuracy through precise mating surfaces.
Solution Approach 2:
The patent replaces the elastic ring mechanical system with a direct fit system relying on precise dimensional matching between the hub member outer surface and the atomizer head body recess, eliminating the need for elastic deformation and clearance accommodation.
3Productivity
If clearance is provided between the hub member and atomizer head body for paint passage, then paint flow is facilitated, but paint residue and bubble formation occur during coating
Solution Approach 1:
The patent removes the clearance between the hub member and atomizer head body by using a direct fit structure, eliminating the source of paint residue and bubble formation while maintaining efficient paint flow through the designated paint outlets in the hub member.
Solution Approach 2:
The patent provides paint passage functionality through localized paint outlets formed in the hub member rather than through clearance between components. This concentrated, controlled paint delivery prevents paint residue accumulation and bubble formation while maintaining productivity.
Data Source
AI summary
A rotary atomizer head 1 with a bell-shaped atomizer head body 2 and a functional member 4 removably attachable thereto, which can be more easily and reliably positioned, and cleaned. The functional member 4 has a front wall 12 that has paint outlets 24, a sidewall 14 of the paint space S extending continuously in a circumferential direction, and a plurality of legs 16 having claws 16a, which engage with a circumferential groove 18 formed in a peripheral wall 8 of a central recess 6 of the atomizer head body 2. The peripheral wall 8 of central recess 6 has an inclined wall. The sidewall 14 has an outer circumferential surface 14a and an inner circumferential surface 14b, wherein the peripheral wall 8 and outer circumferential surface 14a have complementary configurations.