Two-Grip Binding Machine Layout for Long-Reach Rebar Tying
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Solution Overview
Problem
Existing binding machines with extended lengths for binding reinforcing bars from a distance increase operator burden due to increased weight and size, making one-handed operation cumbersome and straining on the arm and shoulder.
Innovation Solution
A binding machine design featuring a pair of grips on either side of the axis line, allowing for two-handed operation, along with a battery mounting part positioned between the grips to balance weight and improve ergonomics, connected by an elongated part to distribute the machine's weight and enhance handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the entire length of the binding machine is increased to bind distant reinforcing bars, then the binding capability for distant objects is improved, but the weight and size of the machine increase, deteriorating handling properties
Solution Approach 1:
The binding machine is divided into a first body part (containing grips and battery) and a second body part (containing curl guide and twisting unit), connected by a connecting part. This segmentation allows the operator to hold the machine at the first body part while the second body part extends to reach distant reinforcing bars, resolving the contradiction between length and ease of operation.
2Length of moving object
If the entire length of the binding machine is increased, then the binding capability for distant objects is improved, but the weight of the machine increases, increasing burden on arm and shoulder
Solution Approach 1:
The machine is segmented into two body parts connected by a connecting part, with the battery mounted in the first body part close to the operator's hand. This distribution of components along the length helps manage weight distribution, allowing the operator to control a longer machine without proportionally increased burden on arm and shoulder.
3Device complexity
If the binding machine has a single handle for one-handed operation, then the device complexity is reduced, but the ease of operation deteriorates when the machine is enlarged
Solution Approach 1:
The first body part is provided with a pair of grips (right grip and left grip) positioned on opposite sides of the axis line, enabling two-handed operation. This segmentation of the grip system into multiple contact points improves ease of operation for enlarged machines while maintaining reasonable device complexity.
Data Source
AI summary
A binding machine includes: a first main unit that has a pair of grips that an operator can hold; a second main unit that has a curl guide for curling a wire around an object to be bound, and a twisting unit including a twisting shaft to twist the curled wire; and a link unit that links the first main unit and the second main unit. The grips are provided on either side of the axis line of the link unit or an extended line of the axis line as seen from the operator side when the operator is holding the grips to manipulate.