Portable Packaging Tensioning Mechanism for Handleless State Switching
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Solution Overview
Problem
Existing portable packaging machines lack an automatic mechanism for transitioning between tensioned and non-tensioned states, requiring manual operation via a handle, which is inefficient and not suitable for seamless handling.
Innovation Solution
A tensioning mechanism for portable packaging machines incorporating a gear connecting system with a rotation direction control and angle keeping mechanism, non-return mechanism, and rocker arm, utilizing a steering engine and planetary gear reduction to enable handleless operation, ensuring the tensioning wheel rotates in a single direction and maintains the desired tension or release state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a manual handle operation mechanism is used to switch between tensioned and non-tensioned states, then the structure is simple, but the automation level is low and operation efficiency is poor
Solution Approach 1:
The system uses a sensor to detect the presence of an item and automatically activates the steering engine to adjust the rocker arm and tensioning wheel, enabling the packaging machine to self-regulate between tensioned and non-tensioned states without manual handle operation, thus achieving automation while maintaining reasonable structural complexity
Solution Approach 2:
The patent replaces the manual mechanical handle operation with an automated control system comprising a sensor, control unit, and steering engine, substituting human mechanical input with an automated electromechanical system that detects items and automatically adjusts tensioning states
2Reliability
If a non-return mechanism is added to ensure single-direction rotation of the tensioning wheel, then the reliability of tensioning is improved, but the device complexity increases
Solution Approach 1:
The patent introduces a non-return mechanism as an intermediary component between the steering engine and the tensioning wheel, using a ratchet and pawl system that allows the tensioning wheel to rotate in the tightening direction while preventing reverse rotation, thus ensuring reliable single-direction tensioning without requiring complex control logic
Solution Approach 2:
The gear connecting mechanism is segmented into distinct functional components: the steering engine for rotation control, the rocker arm for angle keeping, and the non-return mechanism for directional control, allowing each component to perform its specific function independently and simplifying the overall system design
3Measurement precision
If a rocker arm with toothed structure is used to match the tensioning wheel for angle keeping, then the precision of tensioning angle is improved, but the device complexity increases
Solution Approach 1:
The rocker arm is designed with a toothed structure that meshes with corresponding teeth on the tensioning wheel, creating a mechanical linkage that maintains a fixed angular relationship between the two components. This toothed engagement ensures that the rocker arm follows the rotational position of the tensioning wheel precisely, keeping the tensioning angle constant without requiring additional sensors or active control
Solution Approach 2:
The rocker arm serves multiple functions: it acts as a lever to transmit force, provides angle keeping through its toothed structure that meshes with the tensioning wheel, and serves as a structural support for the non-return mechanism, thereby reducing the need for separate components and simplifying the overall design
4Use of energy by moving object
If planetary gear reduction mechanism is used to reduce size and energy consumption, then the energy efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent replaces a direct-drive mechanical system with a planetary gear reduction mechanism that provides mechanical advantage, reducing the torque requirements on the steering engine and thereby lowering energy consumption while achieving the desired rotational speed and torque output for the tensioning wheel
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 mechanism allows for compact, energy-efficient, and automatic operation of the portable packaging machine, reducing size and energy consumption while ensuring stable and precise tensioning without manual handling.
Implementation Method 1
the gear connecting structure is provided with a planetary gear reduction mechanism
Implementation Method 2
the non-return mechanism comprises a non-return mechanism connecting gear, a ratchet coaxially connected with the non-return mechanism connecting gear and a pawl matching the ratchet
Data Source
AI summary
The present invention provides a tensioning mechanism, which is installed in a portable packaging machine, the tensioning mechanism is provided with a rotation direction control and rotation angle keeping mechanism, a non-return mechanism and a rocker arm, the rotation direction control and rotation angle keeping mechanism being connected to the non-return mechanism and the rocker arm, and the rocker arm being provided with a toothed structure matching the tensioning wheel. The present invention is compact in structure, and is capable of realizing the handleless operation of the portable packaging machine from a tensioned state to a non-tensioned state without operating a handle.