Adjustable Wrapping Bar Height via Acme Screw Actuator
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Solution Overview
Problem
Conventional film-wrapping machines with fixed-height flying rods are limited in accommodating articles of varying heights, as the rods must pass through a fixed space between adjacent conveyors, restricting the range of items that can be wrapped.
Innovation Solution
The height of the wrapping bar is made adjustable by using an actuator with an Acme screw mechanism, allowing the rods to change position while maintaining the ability to pass between conveyors, enabling the wrapping of taller or shorter articles by adjusting the arm's position relative to the axis of rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the height of the flying rod is fixed, then the structure is simple and stable, but the machine cannot accommodate articles of different heights
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed-height rod into an adjustable-height rod. The rod is connected to an arm that can pivot at a fixed point, allowing the rod's position to be dynamically adjusted relative to the conveyor while maintaining the ability to pass between adjacent conveyors. This enables the machine to accommodate articles of varying heights.
Solution Approach 2:
The patent segments the wrapping mechanism into multiple independent components: the rod, the arm, and the pivot point. This segmentation allows the rod's height to be adjusted independently by changing the arm's position, while the pivot point remains fixed to maintain the geometric constraint of passing between conveyors.
2Adaptability or versatility
If the arm's position is adjusted to change rod height, then articles of different heights can be wrapped, but the synchronization with conveyor movement must be maintained
Solution Approach 1:
The system dynamically adjusts the arm's position to change the rod's height while maintaining synchronization with the conveyor. The arm can pivot at the fixed point, allowing continuous adjustment of the rod's position relative to the conveyor surface, ensuring the rod remains synchronized with the moving article regardless of height variations.
Solution Approach 2:
The patent introduces an additional degree of freedom by allowing the arm to pivot in a vertical arc. This dimensional change enables height adjustment without affecting the horizontal synchronization with the conveyor, as the pivot point is positioned to maintain the geometric relationship required for passing between conveyors.
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
This solution allows for the successful wrapping of articles of different heights by ensuring the rods can adjust their height to align with the article while maintaining synchronization with the conveyor movement, effectively expanding the machine's operational range.
Implementation Method 1
The height of the wrapping bar is made adjustable by using an actuator with an Acme screw mechanism
Data Source
AI summary
The invention is directed to changing the height of the wrapping bar on a lap seal machine so that articles of different heights can be accommodated by making the height of the wrapping bar adjustable to accommodate taller or shorter articles on a conveyor.