Reinforcing Bar Binding Machine Wire Feed Mechanism
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Solution Overview
Problem
Existing reinforcing bar binding machines face difficulties in discharging wires without requiring manual separation of feeding rollers, which hinders efficient wire feeding due to increased spring pressure for friction-based wire feeding.
Innovation Solution
A binding machine with a wire feeding unit that includes a pair of feeding members and a motor-driven mechanism, allowing controlled discharge of the wire without manual separation of the rollers, utilizing a control unit to manage the wire feeding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the force of the spring for pressing the pair of rollers in a direction of coming close to each other is increased to obtain enough friction force for wire feeding, then the wire feeding force is improved, but it becomes difficult to move the pair of rollers in a direction of separating from each other by human force
Solution Approach 1:
The patent replaces the manual mechanical separation of rollers with an automated motor-driven system. The feeding motor (33) drives the feeding gears (30L, 30R) through a drive force transmission mechanism (34), eliminating the need for manual roller separation while maintaining strong pressing force for wire feeding.
Solution Approach 2:
The system performs its own wire discharge function through automated control. The control unit (14) controls the feeding motor (33) to rotate in the reverse direction, automatically discharging the wire (W) without requiring manual intervention to separate the rollers.
2Reliability
If the spring pressing force is increased to feed the wire securely, then the wire feeding reliability is improved, but the device complexity increases due to the need for automated roller separation mechanisms
Solution Approach 1:
The feeding motor (33) serves multiple functions: it drives the feeding gears (30L, 30R) forward to feed the wire (W) during normal operation, and rotates in reverse to discharge the wire (W) when needed. This multi-functionality eliminates the need for separate mechanisms for wire feeding and discharge, reducing device complexity while maintaining reliability.
Solution Approach 2:
The patent merges the wire feeding function and wire discharge function into a single integrated system controlled by the feeding motor (33). The drive force transmission mechanism (34) and control unit (14) coordinate to combine these functions, avoiding the need for separate mechanical systems and reducing overall device complexity.
3Device complexity
If manual separation of rollers is required for wire discharge, then the device complexity is reduced, but the productivity decreases due to manual intervention
Solution Approach 1:
The patent replaces manual mechanical operations with an automated motor-driven system. The feeding motor (33), controlled by the control unit (14), automatically performs wire discharge by rotating in reverse, eliminating manual intervention and significantly improving productivity without excessive increase in device complexity.
Solution Approach 2:
The system performs wire discharge automatically through self-service operation. The control unit (14) controls the feeding motor (33) to rotate in the reverse direction, enabling the system to discharge the wire (W) autonomously without requiring manual roller separation, thereby improving productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure winding of reinforcing bars with wires by increasing the wire feeding force without the need for manual roller separation, improving operational efficiency and ease of use.
Implementation Method 1
the wire is fed by a friction force generated between the rollers and the wire
Data Source
AI summary
A binding machine includes: a wire feeding unit configured to feed a wire; a curl forming unit configured to form a feeding path of the wire along which the wire fed in a first direction by the wire feeding unit is wound around an object; and a binding unit configured to twist the wire fed in first direction by the wire feeding unit and wound on the object. The wire feeding unit includes a pair of feeding members configured to sandwich the wire and to feed the wire by a rotating operation, and a feeding motor configured to drive the feeding members. The binding machine further includes a control unit configured to control the wire feeding unit. The control unit is configured to control the wire feeding unit to enable the wire sandwiched by the feeding members to be discharged from the feeding members.