Gas-Spring Driving Tool External Charge Valve Jamming
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Solution Overview
Problem
Conventional gas-spring type driving tools take time to recharge compressed gas after pressure release, leading to delayed restarts during jamming incidents due to reliance on internal operational movement for air intake.
Innovation Solution
Incorporating a charge valve connected to an external device for rapid gas charging, with a relief valve and opening valve integrated to maintain preset pressure and facilitate quick chamber opening to atmosphere, allowing external compressed gas to refill the accumulation chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an external air intake valve is used to introduce external air into the accumulation chamber in response to operational movement, then the tool can maintain operational continuity, but it takes time to charge the gas to sufficient pressure causing delayed restarts after jamming
Solution Approach 1:
The charge valve is pre-configured to enable rapid external gas charging before jamming occurs. When jamming is detected, the system can immediately switch to external charging mode through the charge valve, eliminating the need to wait for internal operational movement to generate sufficient pressure. This preliminary preparation allows for quick restarts after jamming incidents.
Solution Approach 2:
The charge valve acts as an intermediary component that facilitates rapid gas transfer from external sources to the accumulation chamber. Unlike the conventional air intake valve that relies on internal operational movement, the charge valve provides a dedicated pathway for external gas supply, enabling faster repressurization after jamming without disrupting operational continuity.
2Ease of operation
If the accumulation chamber is opened to atmosphere via an opening valve for nail removal, then jamming can be quickly addressed, but the tool requires time to recharge compressed gas before restarting
Solution Approach 1:
The charge valve is pre-positioned and configured to enable immediate external gas charging after the accumulation chamber is opened for jamming resolution. This preliminary setup ensures that once the opening valve is used to remove jammed nails, the system can rapidly repressurize through the charge valve without delay, allowing for quick restarts.
Solution Approach 2:
The charge valve serves as an intermediary that bridges the gap between the opening valve operation and the restart sequence. It provides a dedicated rapid-charging pathway that activates after jamming removal, enabling the accumulation chamber to be quickly repressurized from external sources rather than waiting for internal operational movement.
3Use of energy by moving object
If compressed gas is charged in response to operational movement within the tool main body, then the system uses internal energy, but the charging process is slow and prevents quick restarts
Solution Approach 1:
The charge valve acts as an intermediary that enables external energy input to bypass the slow internal charging process. By providing a dedicated external gas supply pathway, the system can rapidly refill the accumulation chamber from external compressed gas sources rather than relying on the time-consuming internal operational movement to generate sufficient pressure.
Solution Approach 2:
The invention replaces the mechanical internal charging process (relying on operational movement to compress gas) with an external gas supply system through the charge valve. This substitution allows for rapid repressurization by directly introducing compressed gas from external sources, dramatically improving restart speed while reducing dependence on internal mechanical cycling.
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
Enables quick countermeasures for jamming and rapid tool restarts by rapidly recharging the accumulation chamber with external compressed gas, enhancing operational efficiency and reducing downtime.
Implementation Method 1
The upward movement of the impact piston by the driving mechanism compresses the air to provide a thrust force
Implementation Method 2
The compressed gas is accumulated in an accumulation chamber
Data Source
AI summary
A gas-spring type driving tool with a charge valve, a relief valve, and an opening valve provided in an accumulation chamber. Compressed gas can be quickly charged into the accumulation chamber by connecting the charge valve to an external device. The relief valve maintains the accumulation chamber at a preset pressure. The opening valve is capable of opening the accumulation chamber quickly to the atmosphere. This allows for a quick removal of a jammed nail from a driving nose.