Pulp-Molding Mould Heating Tubes 3D Arrangement
Solution Overview
Problem
Traditional pulp-molding mould assemblies with heating devices face inefficiencies in heating distribution, leading to uneven drying of three-dimensional paper-made articles due to inconsistent heat-conducting distances and velocities, resulting in increased energy consumption and extended processing times.
Innovation Solution
A pulp-molding mould assembly with a heating device featuring heating tubes arranged in an evenly and annularly distributed multilayer structure around the three-dimensional inner circumferential surface, providing consistent heat-conducting distances and velocities, and incorporating a vacuum-insulated chamber to enhance thermal preservation and reduce energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional heating devices are arranged on a two-dimensional plane in the same height, then the heating distribution is simple and easy to implement, but the heat-conducting distances to different forming surfaces are inconsistent, resulting in uneven heating and extended processing time
Solution Approach 1:
The heating tubes are arranged in a three-dimensional space rather than on a two-dimensional plane, with different heights and radial positions. This spatial distribution ensures that heating tubes are positioned at optimal distances from all forming surfaces, achieving uniform heat conduction across the entire workpiece and eliminating the uneven heating problem caused by two-dimensional arrangement.
Solution Approach 2:
Different heating tubes are positioned at different locations (different radial distances from the center axis and different heights) to match the local heating requirements of different forming surfaces. This localized positioning ensures that each region of the workpiece receives appropriate heat conduction, achieving overall heating uniformity.
2Manufacturing precision
If heating devices are arranged to cover the entire forming surface, then heating coverage is improved, but the structural complexity and device cost increase
Solution Approach 1:
The heating system is segmented into multiple independent heating tubes distributed in three-dimensional space. Each heating tube independently heats a specific region, and together they provide comprehensive coverage. This segmentation allows for simplified individual components while achieving complex overall heating coverage through strategic spatial arrangement.
3Speed
If heating tubes are positioned closer to higher forming surfaces, then heat conduction velocity to upper surfaces is improved, but heat conduction distance to lower surfaces becomes excessive, causing uneven heating
Solution Approach 1:
By introducing the height dimension into the heating tube arrangement, the system optimizes the three-dimensional spatial distribution of heating tubes. This allows heating tubes to be positioned at heights that balance the heat conduction distances to both upper and lower forming surfaces, achieving consistent heat conduction velocity across all surfaces simultaneously.
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 solution achieves uniform heating and reduced drying times, lowering energy consumption and production cycle times while allowing for modular assembly and temperature control, enhancing the efficiency and cost-effectiveness of the pulp-molding process.
Implementation Method 1
the heating tubes being heated against the three-dimensional contour shape of the entire main three-dimensional inner circumferential surface through which the paper-made article is heated to be dried
Implementation Method 2
by a way of vacuum heat-insulation of a main inner space defined inside the mould
Data Source
AI summary
A pulp-molding mould assembly with a heating device is configured for integrally forming paper-made articles, and comprises: at least one mould and a number of heating tubes. The at least one mould has a main accommodating chamber which is defined with a main three-dimensional inner circumferential surface and a main inner space. The heating tubes are layer-by-layer arranged into multilayer-stacked structure in an evenly and annularly heating distribution around the main three-dimensional inner circumferential surface. This could not only make the heating tubes evenly heating against the main three-dimensional inner circumferential surface and reduce heat-conducting distances from the heating tubes to the respective paper-made article, for reducing a power consumption thereof, but also make the heating tubes evenly heating an air inside the main inner space for making the main accommodating chamber yields a thermal preservation effect by way of a vacuum heat-insulation thereof.