Drive-in Machine Valve Control for Fastener Placement Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing drive-in machines may drive fastening members into materials at positions deviating from the desired location due to timing issues with the operation of the push lever and trigger, leading to inaccurate placement.
Innovation Solution
A drive-in machine equipped with a control mechanism and restriction mechanism that manages the flow of compressed fluid, ensuring the fastening member is driven into the material at the correct position by controlling the valve element's state and allowing or restricting changes in this state based on the operator's actions and time elapsed since contact with the material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the push lever is pressed against the material and the trigger is operated after a predetermined time has elapsed, then the control mechanism switches to the first state allowing compressed fluid flow, but the fastening member is driven into the material at a position deviating from the desired location
Solution Approach 1:
The restriction mechanism performs a preliminary action by preventing the control mechanism from switching to the first state when the push lever is pressed after a predetermined time has elapsed since the trigger was released. This preliminary restriction ensures that compressed fluid cannot be supplied to the striking portion, thereby preventing the fastening member from being driven at an incorrect position. The system proactively blocks the harmful action before it can occur.
2Productivity
If the control mechanism allows compressed fluid flow whenever the push lever contacts the material, then the driving operation can be performed quickly, but the position accuracy of the fastening member deteriorates due to timing issues
Solution Approach 1:
The restriction mechanism dynamically adjusts the system state based on the timing of the push lever operation relative to the trigger release. By using a predetermined time threshold, the system dynamically switches between allowing and restricting compressed fluid flow, thereby adapting to different operational scenarios. This dynamic control maintains high productivity for timely operations while preventing position errors when timing is incorrect.
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
Prevents deviations in the position of the fastening member being driven into the material, ensuring accurate placement by managing the compressed fluid flow and valve states according to the operator's operations and timing.
Implementation Method 1
When compressed air is introduced into the piston upper chamber, the piston rapidly moves in a driving direction in the cylinder with a large force
Implementation Method 2
The push lever is biased in a direction away from the main body by a spring
Data Source
AI summary
The present invention is to prevent a drive-in position of a fastening member with respect to a material to be driven from being shifted. The drive-in machine according to the present invention comprises: an operation member; a contact member; a striking portion; and a first pressure chamber, the drive-in machine further comprising: a valve element for opening and closing a first passage through which a compressed fluid is sent to the first pressure chamber; a control mechanism having a first state and a second state in which the valve element is controlled; and a restriction mechanism for allowing and restricting the switching between the first state and the second state of the control mechanism. The restriction mechanism has first and second functions for allowing or restricting the control mechanism to be switched from the second state to the first state according to a time from a reference time point.