Rotary Platform Coupling Shaft Vibration Absorption
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Solution Overview
Problem
Existing wrapping machines with rotary platforms face challenges due to complex and expensive chip removal machining for contoured steel coupling shafts, and these machines suffer from vibration transmission issues that compromise stability.
Innovation Solution
A wrapping machine design featuring a rotary platform with coupling shafts made of a metal pin with a smooth cylindrical surface and a plastic tubular spacer, which absorbs vibrations and reduces production costs by using a metal pin with a plastic spacer instead of a fully steel coupling shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a contoured steel coupling shaft is used to connect the base and rotary platform, then the structural strength and rigidity are improved, but the manufacturing complexity and cost increase due to complex chip removal machining
Solution Approach 1:
The coupling shaft is divided into two separate components: a simple cylindrical steel pin and a plastic spacer. This segmentation allows each component to be manufactured using simple, cost-effective processes without complex machining, while together they provide the necessary structural function.
Solution Approach 2:
The invention uses a composite structure combining steel (for strength) and plastic (for vibration absorption and cost-effectiveness). The steel pin provides structural strength while the plastic spacer reduces vibrations, creating a composite coupling system that addresses multiple requirements simultaneously.
2Stability of the object's composition
If a steel coupling shaft is used to connect the base and rotary platform, then the structural rigidity is improved, but vibrations are transmitted to the base and support pavement compromising stability
Solution Approach 1:
The plastic spacer acts as an intermediary element between the steel pin and the base/platform connection. It mediates the vibration transmission by absorbing vibrations while maintaining the structural connection, preventing harmful vibrations from reaching the base and support pavement.
Solution Approach 2:
The plastic spacer is a cost-effective component that absorbs vibrations sacrificially. While it may have limited durability compared to steel, it effectively dampens vibrations and protects the overall system stability, and can be replaced if needed without significant cost.
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 solution provides a stable and cost-effective wrapping machine by absorbing vibrations and simplifying the manufacturing process, enhancing stability and reducing production expenses.
Implementation Method 1
the plastic spacer absorbs vibrations so as not to stress the base (4) and, therefore, the support pavement
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A wrapping machine for wrapping products (2) with at least one band of wrapping material (3) has a rotary platform (8) fitted to rotate above a plurality of roller support devices (7), each of which is provided with a pair of rollers (15) fitted on a coupling shaft (14) defined by a central metallic pin (17) delimited by an outer smooth cylindrical surface (18) and by a spacer (20) made of plastic material arranged on the pin (17) between the rollers (15).