Pneumatic Clip Gun Safety Shield and Feed Mechanism
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Solution Overview
Problem
Manual connection of rebar in concrete reinforcement is labor-intensive, time-consuming, and prone to injuries due to repeated bending, with existing clip applicators not fully addressing the efficiency and safety concerns.
Innovation Solution
A clip applying apparatus with a barrel, alignment head, hammer, clip track, safety shield, and pneumatic clip feed assembly that positions and secures clips between rebar bars using notches and a trigger assembly, ensuring safe and efficient clip placement with a pneumatic feed mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual connection of rebar is used, then labor flexibility is maintained, but labor intensity and time consumption increase significantly
Solution Approach 1:
The patent replaces the manual mechanical connection system with an automated pneumatic clip applicator. The device uses a pneumatic hammer mechanism driven by compressed air to drive clips through rebar, eliminating the need for manual bending and tying operations. This substitution dramatically increases connection speed while reducing labor intensity.
Solution Approach 2:
The invention employs a pneumatic feed mechanism that uses compressed air to advance clips through a tube toward the applicator head. This pneumatic system automates the clip delivery process, allowing continuous operation without manual intervention for each clip, thereby significantly improving productivity.
2Reliability
If repeated manual bending for rebar connection is performed, then connection stability is achieved, but worker injuries increase
Solution Approach 1:
The patent replaces the manual bending operation with an automated pneumatic driving mechanism. The pneumatic hammer delivers controlled blows to drive clips through rebar, eliminating repeated manual bending motions that cause worker injuries. The connection stability is maintained through the mechanical interlocking of properly driven clips.
Solution Approach 2:
The clip applicator is designed to automatically position and drive clips without requiring worker manipulation. The device self-adjusts to the rebar configuration and automatically completes the connection process, removing workers from the harmful bending motion while ensuring reliable connections.
3Extent of automation
If existing clip applicators are used, then some automation is achieved, but feed mechanism reliability is insufficient
Solution Approach 1:
The patent employs a pneumatic feed mechanism that uses compressed air to reliably advance clips through a tube. The pneumatic system provides consistent, controlled force to push clips into position, ensuring reliable feed operation. This pneumatic approach overcomes the limitations of previous mechanical feed mechanisms that suffered from jamming and inconsistency.
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
The apparatus significantly reduces labor and time required for rebar connection, minimizes worker exposure to injury by automating the clip placement process, and ensures stable rebar grids with improved efficiency and safety.
Implementation Method 1
A pneumatic clip feed assembly is operably associated with the main drive so that upon reciprocation of the hammer the clip feed assembly may advance the clip string along the clip track into the cavity
Implementation Method 2
A hammer is received in the barrel. A main drive is connected to the hammer for reciprocating the hammer within the barrel
Data Source
AI summary
A safety shield is provided for a clip applying apparatus which applies plastic clips to connect rebar. The safety shield prevents operation of the apparatus unless a forward end of the apparatus is properly placed against the bars which are to be joined. Other features may include a safety latch which prevents operation if a cover door of the apparatus is open. Another feature which may be included is an anti-jamming mechanism that prevents operation of the apparatus if a string of clips is not properly received within the clip applying apparatus.