Rotary Gripping Mechanism for Reinforcing Bar Binding Miniaturization
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Solution Overview
Problem
Existing reinforcing bar binding machines face challenges in miniaturization due to parallel movement mechanisms that increase lateral dimensions and require complex rotating structures, making them bulky and intricate.
Innovation Solution
A binding machine design featuring a pair of gripping members rotatably supported by a shaft, allowing one end to move toward and away from the other, and utilizing a movable member that moves in an orthogonal direction, simplifying the structure and enabling miniaturization through rotational motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If parallel movement mechanism is used to open and close gripping members, then gripping members can be opened and closed, but lateral dimension increases making miniaturization difficult
Solution Approach 1:
Instead of moving gripping members parallel to each other to open and close, the invention rotates the gripping members around a shaft. This inversion of the movement direction from lateral parallel motion to rotational motion around a fulcrum dramatically reduces the lateral dimension required while maintaining the gripping function.
Solution Approach 2:
The invention changes the dimension of motion from lateral (parallel) movement to rotational movement around a shaft. By introducing rotation as the movement dimension, the gripping members can open and close without increasing lateral dimension, effectively utilizing a different spatial dimension for the motion.
2Ease of operation
If rotating operation with shaft as fulcrum is used to open and close gripping members, then gripping members can be opened and closed, but mechanism structure becomes complicated
Solution Approach 1:
The invention merges the rotation mechanism into the gripping member assembly itself, where the shaft serves as both the fulcrum for opening/closing and the axis for twisting the bound object. This combination eliminates the need for separate rotating mechanisms and simplifies the overall structure.
Solution Approach 2:
The shaft serves multiple functions: it acts as the fulcrum for opening and closing the gripping members, and simultaneously serves as the rotation axis for twisting the bound object. This multi-functionality reduces the number of components needed and simplifies the mechanism structure.
Data Source
Figure 1
Figure 2~3
Figure 4A~4C
AI summary
It provides a reinforcing bar binding machine capable of reliably performing a gripping operation of a wire with a simple configuration. The reinforcing bar binding machine includes: a first movable gripping member (70L) that is displaced in a direction coming in contact with and separating from one side of a fixed gripping member (70C); a second movable gripping member (70R) that is displaced in a direction coming in contact with and separating from the other side of the fixed gripping member (70C); a bending portion (71) that brings the first movable gripping member (70L) and the second movable gripping member (70R) into and out of contact with the fixed gripping member (70C), wherein the fixed gripping member (70C) includes a shaft (77) that rotatably supports the first movable gripping member (70L) and the second movable gripping member (70R), and the bending portion (71) includes an opening and closing pin (71a) that pushes an opening and closing guide hole (77L) provided in the first movable gripping member (70L) and an opening and closing guide hole (77R) provided in the second movable gripping member (70R).