Gear Pump Melt Distribution for Variable Fiber Impregnation
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Solution Overview
Problem
Existing devices for controlling the supply of polymer melt to plastics processing machines operate statically, failing to dynamically adjust to varying fiber strand properties and processing parameters, leading to inefficiencies in impregnation processes.
Innovation Solution
A device with gear pumps for each sub-unit allows for separate control of polymer melt supply by adjusting drive speed based on detected parameters such as type, temperature, and pressure, ensuring precise and variable feed quantity and pressure, with a pressure booster pump and bypass connection for enhanced pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a static control system is used for polymer melt supply, then device complexity is reduced, but adaptability to varying fiber strand properties and processing parameters deteriorates
Solution Approach 1:
The control system transitions from static preset values to dynamic adjustment based on real-time detection of fiber strand properties and processing parameters. The drive speeds of gear pumps are continuously adapted according to detected parameters, enabling the system to respond dynamically to varying impregnation requirements while maintaining manageable complexity through automated control.
Solution Approach 2:
A feedback mechanism is implemented where detection devices monitor fiber strand properties and processing parameters, and this information is fed back to the control system. The control system then adjusts the drive speeds of gear pumps accordingly, creating a closed-loop control that enhances adaptability without requiring complex manual intervention.
2Manufacturing precision
If gear pumps with separate control are used for each sub-unit, then adaptability and control precision are improved, but device complexity increases
Solution Approach 1:
The system is divided into multiple sub-units, each with its own gear pump and control, allowing independent adjustment of feed quantity and pressure for each impregnation zone. This segmentation enables precise control tailored to specific local requirements while maintaining overall system coordination through the central control system.
Solution Approach 2:
Each sub-unit is equipped with individual gear pumps that can be controlled independently based on local requirements. The drive speed of each pump is adjusted according to the specific properties of fiber strands and processing parameters in that particular zone, enabling localized optimization of impregnation quality.
3Adaptability or versatility
If drive speed of gear pumps is dynamically adjusted, then adaptability to processing parameters is improved, but energy consumption increases
Solution Approach 1:
The drive speeds of gear pumps are dynamically adjusted based on detected processing parameters such as fiber strand properties, temperature, and pressure requirements. By changing the operational parameters of the pumps according to actual needs, the system achieves optimal adaptability while avoiding unnecessary energy consumption that would occur with constant high-speed operation.
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
Enables flexible and dynamic control of polymer melt distribution to sub-units, optimizing impregnation processes by maintaining target pressures and adapting to different fiber bundle densities and types, improving the quality and efficiency of high-strength strand products.
Implementation Method 1
the partial flows are each supplied to the sub-units by means of a gear pump, wherein the volume flows supplied to the sub-units can be separately controlled or regulated by controlling the drive speed of the respective gear pump
Implementation Method 2
a pressure booster pump is preferably installed upstream of the distributor, with which the inlet pressure of all gear pumps can be increased uniformly
Data Source
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AI summary
The invention relates to a device and a method for controlling the supply of polymer melt discharged from an extruder to a plastics processing machine, which is formed from at least two subunits (1, 2). The polymer melt discharged from the extruder is supplied to these subunits via a distributor (13) downstream of the extruder, with partial flows corresponding to the number of subunits. According to the invention, the partial flows are each supplied to a subunit by means of a gear pump (11, 12). The volume flows supplied to the essentially identical subunits (1, 2) can be controlled or regulated separately by controlling the drive speed of the respective gear pump (11, 12) depending on operating parameters and/or the configuration of the respective subunit (1, 2). (Fig. 1)