Strapping Tool Jaw Return Mechanism Without Control Signals
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Solution Overview
Problem
Conventional strapping tools are cumbersome, require external power sources, and have complex designs, limiting their use in applications where power is unavailable and increasing their cost and complexity.
Innovation Solution
A strapping tool with an integrated external power source, such as a battery-powered drill, and a drivetrain assembly that includes a sealing assembly with jaw members configured to crimp or notch strapping seals, allowing for operation without a remote power source and featuring a self-returning mechanism to conserve energy and simplify design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional strapping tools are designed with integrated power sources and complex control systems, then sealing precision and automation are improved, but device complexity and weight increase
Solution Approach 1:
The drivetrain assembly is designed to automatically return the jaw member to the open position using spring mechanisms and cam-follower systems, eliminating the need for powered return strokes or complex control systems. This self-service approach maintains sealing precision while reducing device complexity and power requirements
Solution Approach 2:
The tool employs periodic action through the cam-follower mechanism that converts rotational motion from the external power source into periodic linear motion of the jaw member. The cam profile is designed to provide the necessary force during the closing stroke for precise sealing, then automatically returns the jaw during the idle period, achieving high sealing precision without continuous powered operation
2Weight of moving object
If conventional strapping tools use remote power sources, then tool portability is improved, but device complexity and setup requirements increase
Solution Approach 1:
The patent merges the external power source with the drivetrain assembly into a single integrated unit that attaches directly to the sealing assembly. This combination eliminates the need for separate remote power sources and complex connection systems, improving portability while maintaining adequate power delivery for sealing operations
Solution Approach 2:
The drivetrain assembly is designed to be universally compatible with various sealing assembly configurations and can accept different external power sources (electric drills, impact drivers, etc.). This multi-functionality allows the same tool design to work with multiple power sources, reducing overall system complexity and improving portability across different application scenarios
3Extent of automation
If conventional strapping tools require control signals for jaw return, then automation is improved, but device complexity and power consumption increase
Solution Approach 1:
The jaw return mechanism is designed as a self-service system that automatically returns the jaw member to the open position using spring-loaded cam-follower mechanisms. This eliminates the need for control signals or powered assistance during the return stroke, reducing power consumption while maintaining automated operation through the mechanical self-return feature
Solution Approach 2:
The patent extracts the control signal requirement from the automation system by implementing a purely mechanical self-return mechanism. The cam profile and spring system are designed to automatically reverse the jaw motion without electronic control, removing the need for control boards, sensors, or signal transmission while maintaining automated cycling
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
The tool is more portable, efficient, and cost-effective, enabling strapping operations in various settings without the need for remote power sources and reducing overall complexity and weight.
Implementation Method 1
the nut-pusher component being pressed upward by one or more springs
Implementation Method 2
at least one cam follower that is pressed to the bevel of the nut-pusher component by links, the cam follower being coupled to the at least one jaw member
Implementation Method 3
the screw shaft selectively rotatably coupled to the transitional coupling and threadingly engaged with a nut-pusher component
Data Source
AI summary
A strapping tool is disclosed herein. In one or more embodiments, the strapping tool includes an external power source; a drivetrain assembly operatively coupled to the external power source; a sealing assembly, the sealing assembly comprising at least one jaw member, the drivetrain assembly operatively coupling the at least one jaw member to the external power source, and the at least one jaw member of the sealing assembly configured to crimp or notch a strapping seal member so as to secure a piece of strapping around a package or bundle of items. In these one or more embodiments, the drivetrain assembly is configured to return the at least one jaw member to an open position without sending or receiving a control signal from a control board.