Binding Machine Curl Guide for Reliable Large-Bar Wire Feeding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing binding machines face challenges in guiding a wire whose tip is in contact with the bottom surface portion of a curl guide, leading to increased friction and potential failure in feeding the wire to the binding portion, especially when the diameter of the wire's feeding path increases.
Innovation Solution
The binding machine incorporates a curl guide part with a bottom surface portion that includes a guiding portion with an inclined surface, directing the wire tip towards the base end of the curl guide, reducing friction and ensuring smooth wire guidance even when the wire diameter increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the diameter of the feeding path of the wire is increased to accommodate larger reinforcing bars, then the binding machine can handle larger to-be-bound objects, but the wire tip comes into contact with the bottom surface portion of the curl guide, increasing friction and potentially causing feeding failure
Solution Approach 1:
The bottom surface portion of the curl guide is segmented into multiple functional regions: a guiding portion with an inclined surface that directs the wire tip toward the base end, and a flat portion that provides support. This segmentation allows the wire to be guided smoothly through different zones, preventing it from getting stuck while accommodating larger feeding path diameters.
Solution Approach 2:
The guiding portion of the bottom surface is designed with a curved inclined surface rather than a sharp edge. This curvature allows the wire tip to roll or slide smoothly along the inclined surface toward the base end, reducing friction and preventing the wire from getting caught, thereby maintaining reliable feeding even with larger wire path diameters.
2Reliability
If the wire is guided to pass through a path spaced from the bottom surface portion of the curl guide, then friction is reduced for small diameter applications, but the wire cannot be reliably guided when the feeding path diameter increases
Solution Approach 1:
The bottom surface portion is designed to serve multiple functions: for small diameter applications, the wire passes spaced from the bottom surface reducing friction; for large diameter applications, the wire tip contacts the inclined guiding portion which actively directs the wire. This multi-functional design allows the same structure to adapt to different wire path diameters and reinforcing bar sizes.
Solution Approach 2:
The design allows the wire's relationship with the bottom surface to dynamically change based on the feeding path diameter. When the diameter is small, the wire naturally passes spaced from the bottom surface. When the diameter increases, the wire tip naturally contacts the inclined guiding portion, which then provides the necessary guidance. This dynamic adaptation eliminates the need for different structures for different applications.
Data Source
AI summary
A binding machine includes: a curl forming portion configured to form an annular feeding path for winding the wire fed by a wire feeding portion around a to-be-bound object; and a binding portion configured to twist the wire wound on the to-be-bound object. The curl forming portion includes an arm part configured to curl the wire fed by the wire feeding portion, and a curl guide part configured to guide the wire curled by the arm part to the binding portion. The curl guide part includes a bottom surface portion on a radially outer side of the annular feeding path. The bottom surface portion includes a guiding portion forming at least a part of a tip portion side of the curl guide part and configured to guide a tip of the wire toward a base end portion side of the curl guide part.