Split Rotary Door Structure for Wide-Opening Machining Enclosures
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Solution Overview
Problem
Machining apparatuses often have limited front width openings, restricting the size of workpieces that can be machined or cleaned, and existing designs do not effectively manage the sealing and noise reduction during the opening and closing of doors.
Innovation Solution
A machining apparatus with a large front width opening, featuring a cover with a rectangular front opening and a semicircular planar opening, and two door bodies that rotate to accommodate inside the cover, with gap adjusting members and packing receivers to ensure a constant gap and prevent collision, while also reducing noise and fluid splashing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large front width opening is provided to accommodate larger workpieces, then the opening size is improved, but the sealing performance and noise reduction deteriorate
Solution Approach 1:
The door body is divided into multiple segments (first door body and second door body) that can rotate independently about different axes. This segmentation allows the door to achieve a larger overall opening while maintaining sealing capability through multiple contact surfaces (mating surfaces, abutting surfaces) that can seal against the cover when closed.
Solution Approach 2:
The door bodies are designed to rotate and accommodate inside the cover, with the ability to nest within the cover structure when opened. The first and second door bodies can rotate about offset axes and be accommodated within the cover's internal space, maximizing opening size while maintaining compact closed configuration for effective sealing.
2Area of stationary object
If door bodies rotate about offset axes to achieve large opening, then the opening size is improved, but the structural complexity increases
Solution Approach 1:
The door mechanism employs asymmetric design with the first axis offset toward the second side and the second axis offset toward the first side relative to the mating surface. This asymmetric offset axis configuration enables the door bodies to rotate and accommodate inside the cover while achieving a large opening, balancing structural complexity with functional performance.
3Reliability
If gap adjusting members and packing receivers are added to ensure constant gap and prevent collision, then the sealing performance is improved, but the device complexity increases
Solution Approach 1:
Gap adjusting members are provided to preliminarily set and maintain a constant gap between the door bodies and the cover before operation. Packing receivers are configured to receive packing material in advance, ensuring proper sealing arrangement is established before the door operates, thereby preventing collision and ensuring sealing performance without requiring complex real-time adjustment mechanisms.
Data Source
AI summary
The machining apparatus includes: a cover including a side plate, a projecting portion disposed below the side plate, a rectangular shaped front opening, and a semicircular shaped planar opening; a first door body including a first drum disposed in a first side of a mating surface, a first abutting surface connected to the first drum, and a first top plate, and accommodated inside the cover by rotated about a first axis; and a second door body including a second drum disposed in the second side of the mating surface, a second abutting surface abut to the first abutting surface on the mating surface, and a second top plate, and accommodated inside the cover by rotated about a second axis.