Supported Strap Twist Device Gradual Reorientation
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Solution Overview
Problem
Existing strap reorientation devices, such as twist necks, are inadequate for changing the orientation of straps over a wide range of angles without damaging the strap, especially when the strap is pushed through, and they have limited angular reorientation capabilities.
Innovation Solution
A supported strap twist device with a varying cross-sectional through-bore transition section and modular reorienting sections that allow for gradual reorientation of straps up to 30 degrees, preventing buckling by maintaining strap support through an inwardly pinched circular profile that transitions to an elongated shape, enabling multiple sections to be angled relative to each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional twist neck is used to reorient strap, then the strap can be reoriented within a limited range of angles, but the strap can be damaged or buckle when pushed through and the reorientation range is restricted
Solution Approach 1:
The reorienting section is divided into multiple discrete twist sections (e.g., three twist sections), each contributing a portion of the total reorientation angle. This segmentation allows the strap to be reoriented gradually through multiple small-angle transitions rather than one large-angle twist, preventing buckling and damage while achieving a wide overall reorientation range.
Solution Approach 2:
The twist sections are designed with flexible walls that can dynamically adjust to accommodate the strap passing through at various angles. The flexible construction allows the twist sections to adapt their shape during strap passage, maintaining strap support and preventing damage while enabling reorientation beyond the limited range of traditional rigid twist necks.
2Adaptability or versatility
If the feed head is relocated due to space constraints, then the strapping system can be adapted to different layouts, but the strap orientation change becomes more problematic
Solution Approach 1:
The reorienting section comprises multiple modular twist sections that can be assembled in different configurations. This modular segmentation allows the system to be adapted to various feed head locations and strap routing requirements, maintaining ease of operation despite layout changes by providing flexible reorientation capability.
Solution Approach 2:
The reorienting section serves multiple functions: it reorients the strap, supports the strap during passage, and accommodates various reorientation angles. This multi-functionality allows the same component to handle different feed head positions and strap orientations, maintaining ease of operation across diverse system layouts.
3Stability of the object's composition
If a rigid strap guide is used, then the strap path is well-defined, but the sealing head and feed head cannot move relative to each other
Solution Approach 1:
The reorienting section utilizes flexible walls instead of rigid structures. These flexible walls maintain a well-defined strap path through the twist sections while allowing relative movement between the feed head and sealing head. The flexibility enables the strap guide to accommodate head position changes while still providing sufficient structural definition to guide the strap accurately.
Data Source
AI summary
A supported strap twist device reorients a strap along a strap path. The device includes an inlet, an outlet and a reorienting section. The reorienting section includes a body having entrance and exit ends and a transition section therebetween. The transition section has a through-bore having a varying cross-sectional shape defining a race. The race has, at a first end, an opposed inwardly pinched circular profile defining a gap. The circular profile thins along the race toward an hourglass profile, and has, at a second end, an elongated shape. The gap has a substantially constant width along the race. The strap enters the first end at an angle relative to the second end and is reoriented to a desired orientation at the second end. The strap is supported by the race as it traverses therethrough.