Rebar Binding Machine with Inclined Curl Guide Axis
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Solution Overview
Problem
Existing binding machines require operators to bend at the waist or knees to bind reinforcing bars on the floor, and when extended, they often bind objects obliquely, reducing the binding force.
Innovation Solution
A binding machine with a first and second body part connected by an elongated part, featuring a curl guide and twisting unit, where the curl guide's axis is inclined relative to the twisting shaft, allowing vertical binding without bending and maintaining binding force at distant positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the binding machine is extended to increase entire length, then the operator can bind reinforcing bars without largely bending at the waist or knees, but the twisting shaft cannot be positioned vertically over distant binding objects, causing oblique binding and reduced binding force
Solution Approach 1:
The connecting part is designed with rotational capability at its distal end, allowing the curl guide to dynamically adjust its orientation. This enables the twisting shaft to be positioned vertically over binding objects at various distances while the operator remains in an upright posture, resolving the contradiction between extended reach and binding accuracy
Solution Approach 2:
The invention introduces rotational freedom in addition to linear extension. The connecting part not only extends the machine length but also enables angular adjustment of the curl guide, adding a rotational dimension that allows vertical positioning of the twisting shaft over distant objects while maintaining operator comfort
2Adaptability or versatility
If the binding machine is extended to reach distant positions, then binding can be performed at positions ahead of the operator's foot, but the binding force is lowered due to oblique binding direction
Solution Approach 1:
The rotational mechanism at the distal end of the connecting part allows the curl guide to dynamically orient itself vertically over the binding object regardless of distance. This dynamic adjustment ensures that the binding force is always applied in the optimal vertical direction, maintaining binding strength across the entire extended range
Solution Approach 2:
The invention changes the orientation parameter of the curl guide through rotational adjustment. By allowing the curl guide to rotate and position itself vertically over the binding object, the binding direction parameter is optimized to maintain maximum binding force across all reachable positions
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A rebar binding machine (1A) comprises: a first body part (100); a second body part (200) having a curl guide (230A) that curls a wire along the periphery of a binding object, and a twisting shaft (253) that holds and twists the curled wire; and an elongated connecting part (300) that connects the first body part (100) and the second body part (200). The curl guide (230A) includes a first guide part (231A) and a second guide part (232A) that project in a first direction (D1) from the tip end of the second body part (200), and are disposed with a prescribed gap therebetween to constitute an opening (260), in a second direction (D2) orthogonal to the first direction (D1). The first body part (100) and the second body part (200) are disposed so that a virtual axis line (A1) is inclined toward the axis line (A2) of the twisting shaft (253), the virtual axis line (A1) connecting an intermediate position (PI) at the tip end of the second body part (200) and in the prescribed gap, and an intermediate position (P2) at the connection end of the connecting part (300) with the first body part (100) and in the short direction of the connecting part (300).