Directional Clinch Nailer Nose for Cross-Grain Nail Bending
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Solution Overview
Problem
Pneumatic clinching nailers often result in random clinching directions due to the random orientation of cut tips on clinch nails, leading to reduced holding power as the nails may clinch parallel to the wood grain, thereby decreasing the effectiveness and lifespan of both the pallet and the tool.
Innovation Solution
The design of clinch nails with stamped deformities or rings in the bend zone, combined with a pneumatic clinch nailer featuring a rubber pad under the clinch plate and an angle adjustment mechanism, ensures consistent clinching across the wood grain by controlling the nail's direction and reducing tool fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If clinch nails with random cut tips are used, then the nailer can operate without complex alignment mechanisms, but the clinching direction becomes random and holding power is reduced
Solution Approach 1:
The nail tip is designed with an asymmetric single deep cut rather than symmetric multiple cuts. This asymmetric geometry creates a predetermined failure direction when the nail bends against the clinch plate, ensuring consistent clinching direction across all nails without requiring complex alignment mechanisms in the nailer
Solution Approach 2:
The single deep cut is pre-formed on the nail tip during manufacturing, establishing the intended failure direction before the nail is ever used. This preliminary action eliminates the need for random orientation or complex alignment mechanisms, as the nail is pre-programmed to fail and clinch in the correct direction
2Device complexity
If nails are fired from the top of the nose in a coil pallet nailer, then the nailer structure is simplified, but the nail rotates and moves in multiple random ways inside the nose, causing random clinching direction
Solution Approach 1:
The asymmetric single deep cut on the nail tip creates a predetermined failure direction that is independent of the nail's rotational orientation during firing. This allows the simplified top-nose firing structure to maintain precise clinching direction control, as the nail's geometry rather than its orientation determines the clinching direction
Solution Approach 2:
The nail's asymmetric geometry serves the dual function of both fastening and directional control. The single deep cut automatically guides the nail's failure direction without requiring external alignment mechanisms or complex firing mechanisms, making the system self-regulating
3Ease of operation
If clinch nails clinch parallel to the wood grain, then the nailer operation is simple, but the holding power is significantly reduced
Solution Approach 1:
The asymmetric single deep cut ensures that nails consistently fail and clinch perpendicular to the wood grain rather than parallel to it. This geometric constraint maintains high holding power while keeping the operation simple, as the nail's geometry automatically enforces the optimal clinching orientation
Solution Approach 2:
The nail tip geometry is changed from multiple shallow cuts to a single deep cut, fundamentally altering the failure mode. This parameter change ensures that the nail fails in a direction that produces perpendicular clinching, maximizing holding power without complicating the operation
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
This solution achieves consistent clinching across the wood grain, increasing the lifespan of both the pallet and the tool by reducing fatigue and maintaining holding power, while simplifying manufacturing and reducing costs.
Implementation Method 1
a rubber pad under the clinch plate
Data Source
AI summary
A clinch nailer tool system. The system includes a clinch nailer tool body, coil magazine disposed in a bottom of the clinch nailer tool body and configured to hold a coil of nails, clinch arm pivotally connected to the clinch nailer tool body at a proximal end of the clinch arm, clinch nailer tool nose disposed in a front portion of the clinch nailer tool body, wherein the clinch nailer tool nose includes an opening in a lower portion thereof for receiving a nail from the coil magazine; and clinch plate disposed on a distal end of the clinch arm, wherein the clinch plate is configured to bend a nail from the clinch nailer tool nose.