Interchangeable Extrusion Heads for Elastomer Temperature Control
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Solution Overview
Problem
Elastomeric compounds are prone to scorching and undesired curing during extrusion due to temperature limitations, and existing processes struggle to maintain optimal pressure and temperature conditions for varying compound properties, leading to inefficiencies in flow rate and productivity in tire production.
Innovation Solution
The extrusion process involves selecting the appropriate extrusion head based on the compound's viscosity, stickiness, and green strength to control temperature and pressure, allowing for interchangeable dies and calenders to optimize flow rates while keeping temperatures and pressures within safe limits, thereby enabling efficient production of different semifinished products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the extrusion pressure is increased to maintain flow rate, then the productivity is improved, but the temperature increases causing scorching and undesired curing of the elastomeric compound
Solution Approach 1:
The patent applies dynamics by making the extrusion head interchangeable and adaptable to different compound properties. The system dynamically adjusts the extrusion head configuration based on the specific elastomeric compound being processed, allowing optimization of pressure and temperature parameters for each material type to prevent scorching while maintaining productivity
Solution Approach 2:
The patent changes physical parameters by selecting different extrusion heads with varying geometries and characteristics matched to specific compound properties (viscosity, stickiness, green strength). This parameter adjustment allows maintaining optimal flow rates without excessive temperature increase that would cause scorching
2Device complexity
If a fixed extrusion head is used, then the device complexity is reduced, but the adaptability to different compound properties decreases leading to suboptimal flow rates
Solution Approach 1:
The patent implements universality by designing an extrusion system with interchangeable heads that can be adapted to process different types of elastomeric compounds. The standardized mounting system allows a single extruder to perform multiple functions by simply changing the head, providing versatility without requiring multiple dedicated extrusion devices
Solution Approach 2:
The system transitions from a static fixed head to a dynamic configurable system where the extrusion head can be changed based on the compound being processed. This dynamic adaptability allows optimization for each material type while maintaining a relatively simple overall device structure
3Adaptability or versatility
If multiple extruders are used to handle different compound types, then the adaptability is improved, but the device complexity and space requirements increase
Solution Approach 1:
The patent achieves versatility with a single multi-functional extrusion system. By using interchangeable heads that can be quickly changed, one extruder can process multiple different elastomeric compound types, eliminating the need for multiple dedicated extruders and reducing overall system complexity and space requirements
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 approach allows for high flow rates compatible with industrial tire production volumes while maintaining quality and reducing the need for multiple extruders and space, enabling efficient switching between compound types and minimizing scorching risks.
Implementation Method 1
The extrusion device comprises a holding body and a plurality of extrusion screws disposed in side by side relation at the inside of a chamber of the holding body
Implementation Method 2
Elastomeric compounds are prone to scorching and undesired curing during extrusion due to temperature limitations
Implementation Method 3
Elastomeric compounds are prone to scorching and undesired curing during extrusion due to temperature limitations
Data Source
Figure 1
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Figure 4~5
AI summary
The present invention relates to an extrusion device for producing elastomeric compounds, comprising a holding body (2) internally confining a chamber (3) and at least one extrusion screw (4) disposed in the chamber (3). The device (1) further comprises a plurality of interchangeable extrusion heads alternatively installed on the holding body (2) at a discharge opening (2b) of the chamber (3). The choice of using a type of head (5) rather than another or leaving the discharge opening (2b) free is carried out based on the physico-chemical features of the elastomeric compound to be treated, so as to maintain the temperature and/or pressure of the outgoing compound under critical threshold values for such a compound.