Single Transfer Insert Placement Apparatus with Cross-Direction Control
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Solution Overview
Problem
Existing devices in the production of disposable absorbent articles require separate steps for cutting and transferring absorbent pads, leading to excessive wear and mismatch between cut pitch and desired placement pitch, necessitating a solution that integrates cutting, spinning, and transferring while reducing device wear.
Innovation Solution
An apparatus with a transfer mechanism of rotatably driven pucks and a cutter with an anvil roller and knife blades, where the transfer axis and knife blade axis are offset to allow spacing adjustment, enabling cutting, spinning, and re-pitching of absorbent pads for precise placement without additional transfer steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate cutting and transferring steps are used, then cutting precision is improved, but device complexity and wear increase
Solution Approach 1:
The patent combines the cutting mechanism and transfer mechanism into a single integrated apparatus. The cutter assembly with rotating knife blades and the transfer mechanism with multiple transfer surfaces share a common structure, allowing cutting and transferring to occur in one coordinated operation rather than as separate steps, thereby reducing device complexity while maintaining cutting precision
Solution Approach 2:
The transfer mechanism serves multiple functions: it transfers the continuous web from the cutter, performs spinning of the cut sections, and delivers the finished products to the receiving surface. This multi-functionality eliminates the need for separate transfer devices, reducing overall device complexity while preserving the precision of the cutting operation
2Manufacturing precision
If separate cutting and transferring steps are used, then cutting precision is improved, but productivity decreases
Solution Approach 1:
The integrated apparatus enables continuous operation where the cutter continuously cuts sections from the moving web while the transfer mechanism simultaneously transfers, spins, and delivers the cut sections without interruption. This eliminates idle time between cutting and transferring operations, maintaining continuous productive action while preserving cutting precision through the coordinated design
3Adaptability or versatility
If cut pitch differs from receive pitch, then adaptability is improved, but device wear increases due to momentum changes
Solution Approach 1:
The transfer mechanism incorporates adjustable transfer surfaces that can dynamically adapt to different pitch requirements. The spacing between transfer surfaces can be modified to match either the cut pitch or the receive pitch, allowing the system to handle variable pitch requirements without subjecting the device to excessive momentum changes and wear
Solution Approach 2:
The apparatus allows changing of geometric parameters, specifically the spacing between transfer surfaces, to accommodate different pitch requirements. By adjusting these parameters, the system can adapt to various cut pitch and receive pitch combinations without causing excessive wear, thereby improving reliability while maintaining pitch adaptability
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 apparatus efficiently cuts, spins, and re-pitches absorbent pads in a single process, reducing device wear and ensuring accurate spacing for placement, thereby streamlining the production of disposable absorbent articles.
Implementation Method 1
a vacuum source adapted to supply a vacuum through a web receiving surface of said pucks along at least a portion of said transfer path
Data Source
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AI summary
An apparatus and method is provided for single transfer insert placement. The apparatus receives continuous web material and cuts a discrete section or pad from the web. The pad is then supported on a single transfer surface. The single transfer surface then may spin the supported pad to a desired angle and provide the pad to a receiving surface at a desired interval. The web material can be cut to different insert lengths and the placement location varied.