Transfer Assembly with Variable Head Speed for Discrete Articles
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Solution Overview
Problem
Existing transfer assemblies for discrete articles, such as absorbent products, have limited repitching capabilities and require frequent changes when handling different sizes, as they operate at a constant angular velocity, restricting the range of input or output pitches.
Innovation Solution
The transfer assembly includes a frame with transfer members that orbit at a constant angular velocity, combined with apparatus heads that rotate at variable angular velocities, allowing for a broader range of input or output pitches without the need for frequent assembly changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transfer members orbit at constant angular velocity, then the transfer mechanism is simple and reliable, but the repitching capability is limited and frequent assembly changes are required
Solution Approach 1:
The head rotates at variable angular velocity instead of constant angular velocity, allowing the system to adapt to different pitch requirements dynamically without changing the physical assembly configuration
Solution Approach 2:
The angular velocity parameter of the head is made variable to achieve different output pitches, transforming a static system into one that can accommodate multiple article sizes through parameter adjustment rather than physical reconfiguration
2Adaptability or versatility
If transfer assembly is changed frequently to handle different sizes, then the system can accommodate various article dimensions, but operational efficiency and productivity decrease
Solution Approach 1:
The variable angular velocity capability allows the same transfer assembly to handle different article sizes dynamically during operation, eliminating the need for frequent stoppages and assembly changes, thereby maintaining high productivity
Solution Approach 2:
The transfer assembly with variable head speed becomes a universal device that can process multiple article sizes without requiring dedicated configurations for each size, improving both adaptability and operational efficiency
3Adaptability or versatility
If heads rotate at variable angular velocity, then a broader range of pitches is achieved, but the control system becomes more complex
Solution Approach 1:
The system controls the angular velocity parameter of the head to achieve different output pitches, using parameter adjustment as a simpler alternative to mechanical reconfiguration
Data Source
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AI summary
The present disclosure provides a method of transferring discrete articles from a transfer assembly to an apparatus comprising a head. The transfer assembly comprises a frame defining a first rotation axis and a transfer member. The method comprises rotating the transfer member about the first rotation axis and maintaining a transfer surface of the transfer member at a substantially constant minimum distance away from a surface of the head at a point of discrete article transfer. The transfer surface is moved at a first substantially constant tangential velocity at the point of discrete article transfer. The method further comprises rotating the head of the apparatus about a second rotation axis. The surface of the head is moved at a second substantially constant tangential velocity at the point of discrete article transfer. The second tangential velocity of the head is greater than the first tangential velocity of the transfer surface.