Pneumatic Guard Mechanism for Aluminum Wheel Bolt Hole Protection
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Solution Overview
Problem
In the automotive wheel production industry, the spraying process often results in paint being applied to the wheel bolt hole area, which is not allowed by manufacturers, posing a challenge for protecting these areas effectively.
Innovation Solution
A protective device composed of a support, cylinder, push plate, floating shafts, shaft sleeves, stop screws, copper sleeves, rotatable pins, springs, elastic collars, end covers, flange plates, guards, and a mandrel, which moves to position guards over the bolt hole countersink platform, preventing paint from reaching the prohibited areas during spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bolt hole guard is used to protect the bolt hole area, then the protection coverage is improved, but paint still sprays through the gap between the guard and bolt hole
Solution Approach 1:
The guard is designed with movable components including a push plate that moves vertically when activated by compressed air. This dynamic structure allows the guard to adapt its position and maintain contact with the wheel surface, eliminating gaps that would allow paint to penetrate through to the bolt hole area.
Solution Approach 2:
A push plate is introduced as an intermediary component between the compressed air source and the guard structure. The push plate transmits the force from compressed air to move the guard into proper position, ensuring the guard makes adequate contact with the wheel to prevent paint infiltration.
2Stability of the object's composition
If the guard structure is made rigid and fixed, then the structural stability is improved, but the adaptability to different wheel positions and orientations is reduced
Solution Approach 1:
The guard incorporates movable elements including the push plate and adjustable positioning mechanisms that allow the structure to adapt to different wheel positions and orientations while maintaining overall structural integrity during the spraying process.
Solution Approach 2:
Compressed air is used to actuate the push plate and other movable components of the guard structure. This pneumatic system provides the force needed to position the guard correctly against the wheel surface, enabling adaptation to different positions without compromising structural stability.
3Measurement precision
If manual adjustment of the guard position is used, then the positioning precision can be improved, but the operational efficiency and automation level are reduced
Solution Approach 1:
The guard system is designed to automatically position and adjust itself using compressed air actuation. The push plate and movable components self-adjust to the correct position without requiring manual intervention, maintaining positioning precision while significantly improving operational efficiency and enabling automation.
Solution Approach 2:
The pneumatic system provides automated actuation of the guard components through compressed air. This eliminates the need for manual adjustment while maintaining precise positioning, thereby improving productivity and enabling the system to operate efficiently in automated production environments.
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 device ensures effective protection of the wheel bolt hole area during spraying, enabling efficient, safe, and automated operation, particularly suitable for mass production on a production line, meeting the requirement for on-line turnover and maintaining high efficiency and reliability.
Implementation Method 1
a spring is connected with the floating shaft and an end cover respectively
Implementation Method 2
a cylinder, an output shaft of the cylinder is connected with the push plate
Data Source
AI summary
A protective device for spraying of a wheel is mainly composed of a support, a cylinder, a push plate, bases, floating shafts, shaft sleeves, stop screws, copper sleeves, rotatable pins, springs, elastic collars, end covers, flange plates, guards and a mandrel, wherein the bases and the cylinder are fixed on the support, a flange plate is fixed on each base, an output shaft of the cylinder is connected with the push plate, a copper sleeve is enclosed in each base via an elastic collar, an end cover encloses a spring and a floating shaft inside a shaft sleeve, and the spring is connected with the floating shaft and an end cover respectively.