Nail Coil Rewinder

Alumni from the Purdue College of Engineering have developed an innovative machine designed to reduce waste in construction industries. The Nail Coil Rewinder is a machine designed to automatically unwind, untangle, and rewind nail coils, restoring functionality to construction materials that would otherwise be discarded. Roofing nails are typically wound in a coil for easy and fast application in a nail gun. Tailored to the roofing industry, which relies on nail coils for installing shingles, this product addresses common coil damage issues caused by handling problems such as bending/breaking or soiling in construction environments. The Nail Coil Rewinder fixes these damaged coils, minimizing waste and saving money. Utilizing a custom roller and gear mechanism, the system straightens and aligns the nails before re-coiling the nails into a coil suitable for use in nail guns. With this invention, industries that utilize pneumatic or electric coil nail guns will be able to effortlessly recycle damaged coils on-site, saving cost, frustration, and increasing operational efficiency while also reducing waste.

Technology Validation:

A prototype was created and tested for the Purdue Mechanical Engineering senior design competition in 2023. Validation test results measured a 90% success rate. Angular nail tolerance was found to be within 1 degree with a cycle time of less than 8 seconds.

Advantages:

-Restores damaged nail coils for reuse, reducing waste

-Saves material costs for roofing and construction projects

-Prevents unnecessary landfill waste

-Simple and user-friendly operation

-Enhanced workplace efficiency

-Designed for convenient on-site use

Applications:

-For use in pneumatic coil nail guns in industries like roofing and general construction.

TRL: 4

Intellectual Property:

Keywords: Coil Nailer, Construction, Mechanical Engineering, Nail Coil, Nail Gun, Pneumatic Coil Nailer, Roofing, Roofing Gun