Rotary Atomizing Head Spline Mounting for Coating Stability
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Solution Overview
Problem
Rotary atomizing head type coating devices face issues with dislodgement and misalignment due to varying rotational speeds, leading to poor paint atomization and coating quality, and existing solutions complicate construction and increase costs.
Innovation Solution
A rotary atomizing head type coating device with a rotation restricting mechanism using male and female splines to securely attach the rotary atomizing head to the rotational shaft, preventing axial and rotational displacements, and an axial aligning mechanism to ensure proper alignment, eliminating the need for screw threads and reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If screw threads are used to mount the rotary atomizing head on the rotational shaft, then the mounting structure is simple, but the rotary atomizing head can be dislodged when rotational speed decreases or stops
Solution Approach 1:
The patent employs a dynamic centrifugal force mechanism where the rotary atomizing head is allowed to move radially outward under centrifugal force during high-speed rotation, creating a clamping effect against the rotational shaft. This dynamic adjustment ensures reliable attachment during operation while allowing easy mounting and dismounting when stationary, resolving the contradiction between simple mounting structure and attachment stability.
2Reliability
If projections and grooves are added to prevent dislodgement, then attachment stability improves, but device complexity and production cost increase
Solution Approach 1:
The patent uses the dynamic effect of centrifugal force to create a self-clamping mechanism. The rotary atomizing head has a mounting portion that can move radially, and during rotation, centrifugal force pushes it outward to clamp onto the rotational shaft. This eliminates the need for additional projections and grooves, maintaining attachment stability without increasing device complexity.
3Reliability
If the rotary atomizing head is tightly clamped to the rotational shaft, then attachment stability improves, but alignment between the rotary atomizing head and rotational shaft becomes difficult to maintain
Solution Approach 1:
The patent employs a dynamic alignment mechanism where the mounting portion of the rotary atomizing head can move radially outward under centrifugal force to engage with the rotational shaft. This dynamic engagement allows the components to self-align during rotation, maintaining both tight clamping and precise alignment without compromising manufacturing precision.
4Device complexity
If screw threads are used for mounting, then device complexity is reduced, but the structure cannot accommodate variations in rotational speed effectively
Solution Approach 1:
The patent creates a dynamic mounting structure that adapts to rotational speed variations. The mounting portion can move radially to engage or disengage from the rotational shaft based on rotation speed. During high-speed rotation, centrifugal force maintains tight engagement for stable operation. During low-speed or stationary conditions, the mounting portion can be easily separated, providing versatility across different operational states without complex control mechanisms.
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 provides stable attachment and alignment of the rotary atomizing head, preventing dislodgement and misalignment, ensuring consistent paint atomization and improved coating quality across varying rotational speeds without increasing production costs.
Implementation Method 1
when the rotational shaft is put in rotation, a fore distal end of the resilient coupling member is spread out in a radial direction under centrifugal force to hold the rotary atomizing head on the rotational shaft with an increased clamping force
Data Source
AI summary
A rotation restricting mechanism is provided between a mounting shaft section of a rotational shaft and a mounting tube section of a rotary atomizing head. The rotation restricting mechanism includes a male spline member provided on the outer peripheral side of the mounting shaft section, and a female spline member provided on the inner peripheral side of the mounting tube section. By meshing engagement of the male spline member with the female spline member, the rotation restricting mechanism restricts rotational displacements of the rotary atomizing head relative to the rotational shaft.