Expanding-Foot Nail Row Structure for Secure Calcium Silicate Fixing
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Solution Overview
Problem
Pneumatic nail guns face inefficiencies in securely fixing calcium silicate materials, leading to high costs, increased man-hours, and a higher failure rate due to slow and prone-to-skewing screw-based methods.
Innovation Solution
A nail row structure with a universal connecting rod assembly featuring nails with one or two feet, a hitting face, and a flexible portion, along with an expanding plane and ratchets, allowing for smooth, linear, and secure insertion into workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to fix calcium silicates on profiled steel, then the fixing is secure, but the operation speed is slow and the cost is high
Solution Approach 1:
The patent extracts the essential function of screw fixing (secure attachment) and implements it through a specialized nail design with expanding feet that spread within the workpiece, eliminating the need for threaded fasteners while maintaining secure fixation
Solution Approach 2:
The nail design incorporates parameters that change during installation: the feet expand from a compact state to a spread state upon impact, transforming the nail from a simple penetrator to a mechanically interlocked fastener that secures the calcium silicate to the profiled steel
2Reliability
If screws are used to fix calcium silicates, then the connection is stable, but the man-hours and costs increase
Solution Approach 1:
The nail performs self-service by automatically expanding its feet upon impact with the workpiece, creating its own secure fixation mechanism without requiring manual threading or additional fastening steps, thereby reducing labor time while maintaining stable connection
3Extent of automation
If traditional pneumatic nail guns are used, then the nailing operation is automated, but the failure rate increases due to skewing or falling off
Solution Approach 1:
The patent applies local quality by designing nails with non-uniform geometry - the feet have different dimensions and expansion characteristics tailored to engage with specific features of the profiled steel and calcium silicate, ensuring reliable fixation even in automated high-speed operation where precision may vary
Data Source
AI summary
A nail row structure of a nail gun contains: a body including multiple nails arranged on the body. Each of the multiple nails includes one or two feet and a hitting face which are one-piece formed on each nail, and an 90 degrees is defined between the hitting face and each of the two feet. The two feet have a head segment and are flatten, and the two feet have a flexible portion formed on a middle of the two feet away from the head segment, a tilted face c connected with the hitting face, and an expanding plane connected with the titled face c away from the hitting face.