Binding Machine Wire Restriction Layout for Stable Feed Pullback
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Solution Overview
Problem
Conventional binding machines face issues with wire looseness and buckling due to lack of means to restrict deviation, leading to instability and reduced workability, especially when using small-diameter flexible wires, which affects the binding process and increases machine size.
Innovation Solution
Incorporating a binding machine design with a first restriction unit to guide the wire within the housing unit and a second restriction unit to manage wire pullback, along with a curl arm that deforms the wire to form a circle locus, offsetting the virtual plane relative to the hub's cross-section to prevent scattering and reduce machine size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wire is forced to be pulled back at the feeding unit, then the amount of wire used in one binding is reduced and binding is performed so that the possible number of binding times per reel is increased, but looseness of the wire occurs between the feeding unit and the reel inside the housing unit
Solution Approach 1:
A guide member is introduced as an intermediary component between the feeding unit and the reel. This guide member actively directs and constrains the wire during pullback operations, preventing looseness while enabling continuous wire feeding. The guide member serves as a mediator that resolves the conflict between wire movement flexibility and positional stability.
2Device complexity
If a curve is formed on the wire loosened inside the housing unit and the curve of the wire becomes greater than or equal to a predetermined curvature, then the deformation resistance of the wire is lowered, but the wire buckles easily due to the force of the feeding unit forcing the wire to pull back
Solution Approach 1:
The guide member is positioned and configured to preemptively counteract wire loosening and excessive curvature formation during the pullback process. By establishing proper wire guidance before buckling can occur, the system prevents the harmful effect of wire deformation that would lead to buckling under feeding unit force.
Solution Approach 2:
The guide member acts as a mediator between the wire and the housing unit, controlling wire path and curvature. It ensures the wire maintains appropriate tension and geometry during pullback, preventing the formation of excessive curves that would reduce deformation resistance and cause buckling.
3Ease of operation
If the wire buckles at the reel side of the feeding unit, then problems of not being able to send the wire at the next binding or the bent or buckled wire protruding from the housing unit occur, but no means for eliminating wire looseness is provided
Solution Approach 1:
The guide member serves as a simple yet effective intermediary component that eliminates wire looseness and prevents buckling without requiring complex housing unit modifications. It ensures reliable wire feeding for subsequent binding operations while maintaining a relatively simple overall structure.
4Manufacturing precision
If small-diameter flexible wires are used to make the wire in close contact with reinforcing bar and objects, then the binding precision is improved, but the problem of buckling due to the looseness of the wire grows bigger
Solution Approach 1:
The guide member is particularly effective for small-diameter flexible wires, providing the necessary guidance and tension control to prevent buckling. It enables the use of thin, flexible wires for precise binding applications while compensating for their inherent susceptibility to loosening and buckling through active directional control.
Data Source
AI summary
The wire fed or pulled back from the reel by the feeding unit can be properly restricted. The invention relates to a binding machine (2) having a feeding unit (16) for feeding out a wire (3) from a reel (12) provided in a housing unit (11). With respect to the entering route (81) of the wire (3) when the wire (3) drawn out from the reel (12) by the feeding unit (16) is guided to the feeding unit (83), the first restriction unit (83) that restricts the drawing portion (3a) of the wire (3) disposed between the reel (12) and the feeding unit (16) from being deviating from the entering route (81) is provided inside the housing unit (11).