Rotary Encoder Radial Positioning for Container Table Accuracy
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Solution Overview
Problem
Generic rotary machines for container treatment face challenges in precise determination of rotary position and maintenance accessibility due to the central placement of rotary encoders, which limits accuracy and accessibility as machines require larger pitch diameters and easier maintenance access.
Innovation Solution
A rotary machine design with a rotary encoder positioned radially outside the motor, supported by a bearing that enhances mechanical stability and accessibility, allowing for improved angular resolution and maintenance access, featuring a sensor and measuring standard arranged radially outside the motor, and a direct internal rotor motor for precise container table drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the rotary encoder is arranged centrally on the central axis of the rotary machine, then the structure is compact, but the accessibility for maintenance measures deteriorates
Solution Approach 1:
The rotary encoder is moved from a central axial position to a radial position outside the motor, changing the spatial dimension of arrangement. This dimensional shift allows the encoder to be accessible from the radial direction while maintaining compact overall structure, resolving the contradiction between structural compactness and maintenance accessibility.
2Productivity
If the pitch diameter of the container table is increased, then the container treatment capacity is improved, but the determination precision of rotary position deteriorates
Solution Approach 1:
The rotary encoder is positioned at a specific radial location outside the motor where it can accurately measure the rotary position of the container table. This localized positioning ensures high measurement precision is maintained even as the pitch diameter increases, allowing the system to handle larger containers while preserving measurement accuracy.
3Ease of repair
If the rotary encoder is positioned radially outside the motor, then the accessibility for maintenance is improved, but the device complexity increases
Solution Approach 1:
The radial positioning of the rotary encoder outside the motor serves multiple functions: it provides easy accessibility for maintenance from the radial direction, maintains accurate rotary position measurement, and allows the encoder to be integrated with the existing motor and bearing structure. This multi-functional arrangement improves accessibility without significantly increasing overall device complexity.
Data Source
AI summary
A rotary machine for the treatment of containers is described. This rotary machine comprises a stationary underframe, a rotatable container table for receiving the containers, a motor designed as an internal rotor for direct drive of the container table, a bearing for supporting the container table and/or a non-rotatably connected supporting structure on the underframe radially outside the motor, and a rotary encoder for determining the rotational position of the container table. By positioning the rotary encoder radially outside the motor, the accuracy of the rotary position determination can be improved, especially for rotary machines with comparatively large pitch diameters and the accessibility of the rotary encoder for maintenance measures.