Pay-out Take-up Device for Automatic Tightener Binding
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Solution Overview
Problem
Conventional tighteners for binding goods during logistics transportation are inefficient due to manual operation requirements, noise generation, and reduced lifespan from worm and worm wheel contact, making the binding process time-consuming and less effective.
Innovation Solution
A pay-out and take-up device with a rotatable belt axis, a worm axis, and a worm wheel mechanism that allows for automatic binding and loosening through a power mechanism and gear transmission, eliminating the need for manual operation and reducing wear, featuring a guide mechanism for unidirectional rotation and self-locking functionality to maintain tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation of worm and worm wheel is used for binding goods, then the binding process can be completed, but the operation is time-consuming and labor-intensive
Solution Approach 1:
The tightener is equipped with a power mechanism that enables automatic winding of the binding strip around the belt axis, eliminating the need for manual operation of the worm and worm wheel. The system serves itself by automatically tightening the binding strip through powered rotation of the belt axis
Solution Approach 2:
The manual mechanical operation of turning the worm to rotate the worm wheel is replaced by a power mechanism that directly or indirectly drives the belt axis rotation, substituting human mechanical effort with automated power transmission
2Power
If the worm contacts with the worm wheel during operation, then power transmission is achieved, but noise is generated and component wear increases reducing lifespan
Solution Approach 1:
The design separates the power transmission function from the worm-worm wheel contact. The power mechanism drives the belt axis directly or through alternative transmission means, extracting the harmful contact between worm and worm wheel while maintaining the essential power transmission function
Solution Approach 2:
A guide mechanism acts as an intermediary that controls the engagement and disengagement of the worm with the worm wheel, mediating their interaction to occur only when necessary and preventing harmful continuous contact that generates noise and wear
3Productivity
If the worm needs to be pulled out and reinserted for rotation, then the belt axis can be rotated, but the process becomes time-consuming and inefficient
Solution Approach 1:
The power mechanism enables continuous rotation of the belt axis without interruption, eliminating the repeated stopping and reinsertion actions. The binding strip is wound continuously around the belt axis, maintaining uninterrupted useful action throughout the tightening process
Solution Approach 2:
The power mechanism is pre-positioned and ready to drive the belt axis from the start of the binding operation, eliminating the need for repeated manual intervention. The system is prepared in advance to perform the rotation function continuously without requiring intermediate reinsertion actions
4Productivity
If automatic power transmission is implemented, then binding efficiency increases, but device complexity increases with additional mechanisms
Solution Approach 1:
The power mechanism serves multiple functions: it drives the belt axis rotation for winding the binding strip, and through the guide mechanism, controls the engagement and disengagement of the worm-worm wheel system. This multi-functionality reduces the need for separate dedicated components for each function
Solution Approach 2:
The guide mechanism combines the functions of controlling worm-worm wheel engagement, guiding the power transmission path, and managing the binding strip tension. By merging these control functions into a single integrated mechanism, the overall device complexity is reduced despite the addition of automated power transmission
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 device enables automatic binding and efficient operation, reducing manual effort and noise, while ensuring the binding strip remains tightly secured until the desired force is reached, enhancing the binding process's efficiency and extending the lifespan of components.
Implementation Method 1
the transmission mechanism is a gear group, the input gear of which is fixedly connected with the power mechanism and the output gear of which is linked with the worm axis. Power transmission is accomplished through the gear group.
Implementation Method 2
the transmission mechanism includes a transmission worm and a transmission worm wheel in which the transmission worm is linked with the power mechanism, the transmission worm wheel is fixedly connected with the worm axis and the transmission worm is engaged with the transmission worm wheel. The transmission worm and the transmission worm wheel have a further function of speed reduction
Implementation Method 3
The worm wheel and worm themselves have a reverse self-locking function, thus the worm wheel could not reversely rotate in such a case.
Data Source
AI summary
The present invention provides a pay-out and take-up device for a tightener in the mechanical field. The pay-out and take-up device of the invention includes a casing fixedly connected to the side of the holder and a worm, a worm axis and a worm wheel set within the casing, in which the worm wheel is fixedly connected to the extension end of the belt axis, and the worm axis is provided on the side of the worm wheel and could move in the axial direction thereof within the casing, and the worm is covered on the worm axis and fixedly connected to the worm axis. A guide mechanism is placed between the casing and the worm or between the casing and the worm axis, in which the worm axis could move in the axial direction thereof when the worm axis rotates. The worm axis or the worm could be detached from the guide mechanism when the worm is engaged with the worm wheel. A power mechanism is further provided on the holder. A transmission mechanism is provided between the power mechanism and the worm axis for transmitting the power. The device of the invention has the benefits of simple operation, high binding efficiency and excellent applicability.