Working Machine Magazine Feeder Detection to Prevent Idle Striking
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Solution Overview
Problem
Existing driving devices have a complex magazine structure and lack efficient detection of fastener remaining amounts, affecting workability and endurance.
Innovation Solution
A simplified magazine structure with a movable feeder and guiding portion, equipped with a detector to track the feeder's position, allowing for accurate detection of fastener availability and preventing idle striking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a complex magazine structure is used to house and feed fasteners, then the fastener feeding function is achieved, but the device complexity increases and workability deteriorates
Solution Approach 1:
The magazine is divided into functionally independent components: a base member for catching fasteners, a movable feeder for feeding fasteners, and a guiding portion for controlling movement. This segmentation allows each component to be optimized independently and simplifies the overall structure while maintaining feeding functionality.
Solution Approach 2:
The feeder is designed to be movable rather than fixed, allowing it to dynamically adjust its position to feed fasteners to the ejecting portion. The guiding portion enables controlled movement of the feeder, transforming a static complex structure into a dynamic simplified system that achieves the same feeding function with fewer constraints.
2Device complexity
If no detection system is used in the simplified magazine, then the structure remains simple, but the ability to detect fastener remaining amount deteriorates
Solution Approach 1:
The movable feeder serves dual functions: it feeds fasteners to the ejecting portion and simultaneously provides detection information about fastener availability. By monitoring the feeder's position and movement, the system can determine whether fasteners remain in the magazine without requiring separate detection components, thus maintaining structural simplicity while enabling detection functionality.
Solution Approach 2:
The system implements feedback by detecting the feeder's position and movement state to determine fastener remaining amount. This feedback mechanism allows the control system to monitor fastener availability and prevent idle striking when no fasteners remain, achieving accurate detection through the existing movable feeder mechanism rather than adding separate sensors.
3Reliability
If the feeder continuously contacts fasteners during movement, then feeding reliability is improved, but the device complexity and risk of idle striking increase
Solution Approach 1:
The feeder is designed to dynamically switch between contact and non-contact states with fasteners during movement. This dynamic behavior allows the feeder to contact fasteners only when necessary for feeding, reducing unnecessary mechanical interactions and simplifying the mechanism while maintaining reliable feeding through controlled contact at critical moments.
Solution Approach 2:
By detecting the feeder's position and contact state with fasteners, the system receives feedback to determine whether fasteners are available. This feedback enables the control system to distinguish between legitimate feeding operations and idle striking conditions, preventing damage while maintaining feeding reliability through intelligent control rather than continuous mechanical contact.
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
Improves workability and endurance by simplifying the magazine structure and enhancing detection accuracy, preventing idle striking.
Implementation Method 1
a feeder (20b) being movable in the first direction and biased toward one side in the first direction
Data Source
AI summary
Workability and endurance of a working machine is improved with a simple configuration. A working machine includes: an ejecting portion 7; a striking portion 30 striking a fastener; and a magazine 20 feeding the fastener to the ejecting portion 7. The magazine 20 includes: a plate-shaped base member 20a extending in a front and back direction B1 and configured to catch the fastener to be movable in the front and back direction B1; a feeder 20b switchable between a contact state representing contact with the fastener caught with the base member 20a and a contactless state representing contactless with the fastener at time of movement in the front and back direction B1; and a guiding portion guiding movement of the feeder 20b in the front and back direction B1. The working machine includes a detector 21 detecting a position of the feeder 20b in the front and back direction B1.