Extrusion Device Internal Cooling Line System
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Solution Overview
Problem
Existing extrusion devices face challenges in efficiently feeding extrusion material while allowing for form changes in the extrudate and internal cooling, as the drive system and material feeding must be aligned, leading to energy inefficiencies and quality issues.
Innovation Solution
An extrusion device with a movable body and cooling system where the extrusion material is fed axially, allowing for form changes without interrupting material flow, and internal cooling is achieved by guiding coolant through the body and around the drive system, ensuring efficient cooling and minimal energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the drive for moving the mandrel and the feeding of extrusion material are arranged in line with the outlet opening, then energy consumption is reduced and extrusion efficiency is improved, but it becomes difficult to arrange the drive system without causing manufacturing disadvantages
Solution Approach 1:
The cooling line system is arranged in three-dimensional space around the drive device, with coolant being guided outwardly and conducted around the drive device in a spatial configuration rather than a linear arrangement. This allows the cooling function to be added without interfering with the axial alignment of the drive and material feeding systems.
Solution Approach 2:
The cooling line system is divided into multiple segments: a first part arranged in the interior of the body, a second part guiding coolant around the drive device, and a third part discharging coolant. This segmentation allows each part to be optimally positioned without compromising the axial alignment of the drive system.
2Productivity
If internal cooling is implemented by conducting coolant through the mandrel, then extrudate cooling efficiency is improved, but the extrusion material may be cooled too intensively before forming
Solution Approach 1:
Instead of cooling the mandrel from the extrusion side, the cooling system is arranged to cool the extrudate after it has been formed at the outlet. The coolant is fed into the mandrel from the ejection side and discharges in the region of the tool already provided for drive or material feeding, reversing the conventional cooling approach to avoid affecting the extrusion material temperature.
3Temperature
If the coolant is fed into the mandrel from the ejection side with discharge in the drive or material feeding region, then internal cooling is achieved without interfering with extrusion, but the drive system arrangement becomes more complex
Solution Approach 1:
The region of the tool already provided for drive or material feeding is utilized for coolant discharge as well, making this region serve multiple functions. This multi-functionality reduces the need for additional dedicated cooling discharge openings and simplifies the overall device structure.
4Productivity
If the body is moved to change extrudate form without interrupting material flow, then productivity is improved, but the drive system must be precisely aligned with material feeding
Solution Approach 1:
The body is designed to be movable along the axis through the material outlet, allowing dynamic adjustment of the cross-sectional area during continuous extrusion. This dynamic capability enables form changes without interrupting material flow, while the cooling system is designed to accommodate this movement with flexible hose connections.
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 configuration enables efficient extrusion with reduced energy consumption, improved product quality, and the ability to change extrudate form without stopping the process, while maintaining a compact design and homogeneous cooling.
Implementation Method 1
a cooling line system for guiding coolant. Here, a first part of the cooling line system is arranged in the interior of the body and is suitable for guiding the coolant along the axis
Implementation Method 2
an internal cooling of the extrudate together with a cooling taking place from the exterior, e.g. through the application of water, leads to a more homogeneous cooling down
Data Source
AI summary
An extrusion device includes a material inlet; a material outlet; a material guidance system; a body, which passes through the material outlet and a cross-sectional area through which the extrusion material is expelled from the material outlet changes; a drive device; a cooling line system for guiding coolant. A first part of the cooling line system is suitable for guiding the coolant along the axis, a second part is suitable for guiding the coolant out of the body and around the drive device, and a third part of the cooling line system guiding the coolant outwardly, into a discharge line for the coolant at an incline to the axis. The second part of the cooling line system adjoins the first part of the cooling line system, and the third part adjoins the second part against a flow direction of the extrusion material from the material inlet to the material outlet.