Pneumatic Tool Timer Valve Throttle Damping
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Solution Overview
Problem
The stability of the operation of timing valves in nailing machines is affected by variations in compressed air pressure, leading to inconsistent timing measurements and unstable operations.
Innovation Solution
Incorporating a timer valve with a throttle portion to regulate fluid flow and a damper mechanism to control the moving speed of the valve body, which actuates a control valve at a predetermined timing to stabilize the operation by using atmospheric air instead of compressed air, thus minimizing the impact of pressure variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If compressed air is used to actuate the timing valve, then the timing valve can be driven by the available compressed air supply, but variations in compressed air pressure cause unstable operation and inconsistent timing measurements
Solution Approach 1:
A damper mechanism is introduced as an intermediary between the compressed air supply and the timing valve. The damper includes a piston and cylinder assembly with restricted flow passages that smooth out pressure fluctuations in the compressed air before it reaches the timing valve, thereby stabilizing the timing operation while still utilizing compressed air as the power source
Solution Approach 2:
The system changes the pressure parameter of the compressed air by using a damper mechanism to reduce and stabilize the pressure variations. The damper transforms the fluctuating compressed air pressure into a more stable pressure range, making the timing valve operation consistent regardless of upstream pressure changes
2Productivity
If the timer valve moves quickly to enable rapid operation, then productivity increases, but timing precision and measurement accuracy deteriorate
Solution Approach 1:
The timing valve system uses dynamic control through a damper mechanism that regulates the speed of the valve body movement. The damper allows the valve to move at a controlled, steady pace rather than abruptly, enabling both rapid response and precise timing measurement by balancing speed with stability
3Device complexity
If the valve body moves without speed regulation, then the structure is simpler, but timing consistency and operational stability worsen
Solution Approach 1:
A pneumatic damper mechanism is integrated into the valve structure, using compressed air flow through restricted passages to control the movement speed of the valve body. This pneumatic damping approach adds timing consistency and operational stability while maintaining a relatively simple structure that leverages the existing compressed air supply
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 configuration ensures consistent timing measurements and stable operations of the timer valve, preventing variations in actuation time and reducing the influence of compressed air pressure fluctuations.
Implementation Method 1
the timer valve has a valve body configured to act on the control valve and is provided with a throttle portion configured to regulate a flow rate of a fluid generated in conjunction with movement of the valve body
Implementation Method 2
a damper mechanism configured to regulate a moving speed of the valve body
Data Source
AI summary
A pneumatic tool includes a drive mechanism configured to drive by an air pressure of compressed air, a head valve configured to control supply of the compressed air to the drive mechanism, a trigger valve configured to actuate the head valve, a control valve configured to disable actuation of the trigger valve or the head valve, and a timer valve configured to be actuated based on an operation on a trigger and to disable actuation of the trigger valve or the head valve by actuating the control valve at a predetermined timing. The timer valve has a valve body configured to act on the control valve and is provided with a throttle portion configured to regulate a flow rate of a fluid generated in conjunction with movement of the valve body.