Rebar Binding Machine Layout to Block Iron Powder Contamination
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Solution Overview
Problem
Reinforcing bar binding machines face issues with iron powders and chips generated during the binding process being introduced into the machine's main body and attaching to the control unit's connector terminals, leading to operational defects.
Innovation Solution
The binding machine is designed with a partitioned main body, where the control unit is housed in a separate space from the drive unit, preventing iron powders and chips from reaching the control unit by using ribs to divide the internal space into a gripping part area and a drive unit area, with the control unit positioned in the drive unit area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the control board is arranged between the twisting mechanism and the twisting motor, then the control unit can be compactly integrated into the binding machine main body, but iron powders and chips generated during binding operations can be introduced into the main body and attach to the connector terminal portion and control board
Solution Approach 1:
The binding machine main body is divided into a first space accommodating the gripping part and a second space accommodating the drive unit and control unit, separated by a partition wall. This segmentation prevents iron powders and chips generated in the gripping part area from reaching the control unit in the drive unit area, while maintaining compact integration of all components within the main body.
2Device complexity
If the control unit is positioned close to the gripping part for compact design, then the machine structure is simplified, but iron powders and chips can easily reach and attach to the control unit components
Solution Approach 1:
A partition wall divides the main body into separate spaces, isolating the control unit from the gripping part area where iron powders and chips are generated. This maintains a compact overall structure while ensuring the control unit remains in a clean environment, preserving both structural simplicity and operational reliability.
Solution Approach 2:
The partition wall acts as an intermediary barrier between the gripping part area and the drive unit area, preventing harmful iron powders and chips from directly reaching the control unit while allowing the machine to maintain a compact integrated design.
3Reliability
If additional protective structures are added to prevent iron powders and chips from reaching the control unit, then the control unit is protected, but the device complexity and manufacturing cost increase
Solution Approach 1:
The partition wall provides effective protection against iron powders and chips using a simple structural division rather than complex protective mechanisms. This maintains reliability while avoiding excessive device complexity and manufacturing cost.
Data Source
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Figure 3A~3D
AI summary
A binding machine includes a wire feeding unit which feeds a wire, a curl guide which curls the fed wire around an object to be bound, a binding unit including a twisting shaft provided to be rotatable around an axis, a gripping part provided at one end of the twisting shaft and a drive unit provided to the other end of the twisting shaft, a control unit which controls the drive unit, and a binding machine main body which accommodates therein the binding unit and the control unit. When an inside of the binding machine main body is divided by a virtual plane perpendicular to the axis to be partitioned into a first space in which the gripping part is accommodated and a second space in which the drive unit is accommodated, the control unit is arranged in the second space in which the drive unit is accommodated.