Bead Wire Coating Head Control for Stable Pressure and Temperature
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Solution Overview
Problem
Existing coating devices for bead wires struggle to maintain consistent temperature and pressure of the plasticized rubber mixture, leading to unstable coating processes and poor product quality.
Innovation Solution
The device controls the plastification of rubber mixture in the extruder and uses a transfer actuating unit to maintain constant pressure in the coating head cavity, ensuring uniform coating by adjusting the extruder screw speed and allowing surplus mixture to be recycled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coating devices are used for bead wire coating, then the coating process can be performed, but the temperature and pressure of the rubber mixture cannot be maintained consistently, leading to unstable coating quality
Solution Approach 1:
The patent introduces a mobile die that can be moved between positions upstream and downstream of the central chamber. This dynamic positioning allows the system to adapt to varying cord speeds and maintain stable coating conditions. The die's mobility enables real-time adjustment of the coating parameters, resolving the contradiction between process stability and coating quality consistency.
Solution Approach 2:
The patent employs a heating element within the central chamber to dynamically control the temperature of the rubber mixture. By adjusting the heating parameters, the system maintains consistent temperature despite variations in cord speed or environmental conditions. This parameter control directly addresses the instability of temperature and pressure in conventional coating devices, improving both reliability and manufacturing precision.
2Adaptability or versatility
If the bead wire speed varies during operation, then production flexibility is improved, but the coating quality becomes unstable due to inconsistent pressure and temperature conditions
Solution Approach 1:
The mobile die design allows the system to adapt to varying cord speeds by repositioning the die along the central chamber. When cord speed changes, the die can be moved to optimal positions to maintain consistent coating thickness and quality. This dynamic adjustment mechanism enables the system to handle speed variations while preserving coating uniformity.
Solution Approach 2:
The patent implements a control system that monitors coating quality and adjusts the die position and heating parameters in response to speed variations. This feedback mechanism ensures that even when bead wire speed changes, the system automatically compensates to maintain consistent coating conditions, resolving the contradiction between adaptability and manufacturing precision.
3Device complexity
If a simple coating head design is used, then device complexity is reduced, but the ability to control pressure and temperature parameters is insufficient
Solution Approach 1:
The coating head is divided into distinct functional segments: a central chamber for heating and mixing, a mobile die for coating application, and a control system. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability. The modular design balances complexity with parameter control capability, as each segment can be optimized independently.
Solution Approach 2:
The mobile die acts as an intermediary between the heated rubber mixture in the central chamber and the bead wire. It controls the flow and distribution of the coating material, ensuring consistent application despite variations in other parameters. This intermediary component enables reliable parameter control without requiring excessive complexity in the overall coating head design.
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 stabilizes the coating process, enhances product quality, and reduces waste by maintaining consistent temperature and pressure, despite variations in bead wire speed.
Implementation Method 1
processing the input rubber mixture in purpose of its mixing and heating to generate pressure in by this way plasticized material
Implementation Method 2
heating to generate pressure in by this way plasticized material which is consequently extruded
Implementation Method 3
transfer actuating unit is attached to cavity of coating head to keep required pressure in cavity of coating head
Implementation Method 4
constant feeding volume of extruded mixture from extruder is resiliently automatically divided
Data Source
Figure 1
Figure 2
AI summary
The invention describes the device for controlling the parameters of coating heads for bead wires, which uses independently controlled transfer actuating unit (11) to keep the constant pressure of rubber mixture in coating head (1) while required temperature is controlled by the speed of extruder screw rotation (2). The proposed device for controlling the parameters of coating heads for bead wires creates conditions for stabile and controllable technological process characterized by high quality of final product while it is possible to change of other parameters such as operationally necessary changes of speed of input bead material and others.