Cylindrical Core With Locating Pins For Even Web Tension
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Solution Overview
Problem
Applying a web around cylindrical objects like pipes with even tension is challenging due to the tendency of the web to bag in the center, resulting in uneven tension and potential leaks from defects such as micro-cracks and corrosive environments.
Innovation Solution
A system comprising a core with a cylindrical shape and a pair of handles featuring ribs and honeycomb areas, along with locating pins, allows for even tension distribution by preventing the core from spinning and enabling the installer to apply consistent pressure using the handles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a web is applied around a cylindrical object without a specialized core system, then the application process is simpler, but the web tends to bag in the center and has uneven tension
Solution Approach 1:
A cylindrical core is introduced as an intermediary tool between the installer and the web material. The core serves as a mounting surface and tension distribution mechanism, allowing the web to be wrapped evenly around the cylindrical object while preventing bagging and ensuring uniform tension throughout the application.
Solution Approach 2:
The web is pre-mounted onto the core before application to the cylindrical object. This preliminary action allows the installer to prepare the web with proper tension and alignment on the core, ensuring even distribution before the actual wrapping process begins, thereby preventing bagging and tension unevenness.
2Device complexity
If a core without locating pins is used, then the core structure is simpler, but the core may spin during web application causing uneven tension
Solution Approach 1:
Locating pins are pre-positioned on the core at specific locations around its circumference. These pins engage with corresponding features on the cylindrical object before web application begins, establishing a fixed reference orientation that prevents spinning during the wrapping process and ensures consistent tension distribution.
Solution Approach 2:
The locating pins on the core automatically engage with the cylindrical object's surface features during insertion, self-aligning the core to the correct orientation without requiring additional alignment tools or procedures. This self-alignment mechanism prevents spinning and ensures proper web tension control.
Data Source
AI summary
A system for applying a web around a cylindrical object with even tension containing a core having a generally cylindrical shape and a pair of handles. The wall of the cylindrical object contains a plurality of ribs spaced around the circumference, where each rib connects the inner diameter and the outer diameter and extends from the first end to the second end defining honeycomb areas within the wall. Each handle has a insertion area, a collar area, a gripping area, and at least 2 locating pins. The collar area is sandwiched between the insertion area and the gripping area and the insertion diameter is less than the inner diameter of the core at the first end and second end. The location pins extend from the collar area and are located such that the pins fit into the honeycomb areas within the wall of the core.