Fiber Moulding Plant With Automatic Tool Change for Binder-Free Parts
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Solution Overview
Problem
Current fiber-processing technologies face challenges in producing environmentally friendly, degradable fiber products with variable shapes and sizes efficiently and flexibly, as they often rely on conventional plastics or require binders that can contaminate the environment upon decomposition.
Innovation Solution
A fiber-forming system comprising a molding station, preforming station, and hot-pressing station that uses a suction tool with multiple suction heads and a movement unit for automatic tool change, processing environmentally friendly degradable fibers without binders, and employing a pulp with a low fiber content to prevent clumping, allowing for the production of varied and reproducible fiber products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional plastics are used for producing formed parts, then production efficiency and flexibility are improved, but environmental pollution and waste generation worsen
Solution Approach 1:
The patent changes the material parameters by using environmentally degradable fiber materials instead of conventional plastics. The fiber material is processed in a controlled manner through specific forming processes (suction forming, hot pressing) to achieve the desired physical properties while maintaining environmental compatibility. This parameter change resolves the contradiction by substituting the harmful material with a benign alternative that can still meet production requirements.
2Manufacturing precision
If binders are added to fiber material to improve structural stability, then manufacturing quality is improved, but environmental degradability and eco-friendliness worsen
Solution Approach 1:
The patent extracts and eliminates the binder component from the fiber material composition. By removing the binder that would otherwise be required for structural stability, the invention achieves complete biodegradability and environmental compatibility. The structural integrity is maintained through alternative means (fiber arrangement, forming process) rather than chemical binders, thus resolving the contradiction between stability and eco-friendliness.
Solution Approach 2:
The patent uses composite fiber structures where multiple fiber types or configurations work together to provide structural stability without binders. The fiber material itself forms a composite structure through the forming process, where the arrangement and interlocking of fibers provide the necessary mechanical properties, eliminating the need for harmful binder substances.
3Strength
If high fiber content pulp is used to increase product strength, then product quality is improved, but fiber clumping and processing difficulty worsen
Solution Approach 1:
The patent applies local quality control by optimizing fiber distribution and density in specific regions of the formed part rather than uniformly throughout. The suction forming process allows different areas to have different fiber concentrations and densities according to local structural requirements, achieving overall strength while maintaining processability. This localized approach prevents clumping by controlling fiber placement rather than relying on high uniform fiber content.
Solution Approach 2:
The patent uses a moderate fiber content in the pulp suspension rather than maximum fiber content. By using partial action (moderate concentration), the invention avoids the excessive fiber content that would cause clumping and processing difficulties, while still achieving sufficient product strength through optimized forming and hot pressing processes.
4Adaptability or versatility
If automatic tool change is implemented to improve production flexibility, then adaptability is improved, but device complexity worsens
Solution Approach 1:
The patent implements universal tooling interfaces that allow the same tooling components to be used across different forming operations and product types. The standardized interfaces and modular tool design enable automatic tool change while maintaining simplicity. Each tool can perform multiple functions or be adapted to different products, reducing the total number of specialized components needed and thereby limiting the increase in system complexity.
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 the production of high-quality, reproducible, and variable environmentally friendly fiber products with reduced waste and environmental impact, as the system effectively processes natural fibers into stable, binder-free products that can be composted.
Implementation Method 1
a suction tool (2) comprising a plurality of suction heads (21), each with a three-dimensionally shaped suction head suction side (21s) for sucking in the environmentally-friendly-degradable fiber material (11) by means of vacuum as suction pressure
Implementation Method 2
a hot-pressing station (40) for hot-pressing the preformed part (10) with a hot-pressing pressure
Data Source
AI summary
The invention relates to a fiber-forming system (100) comprising at least a molding station (20) according to the invention, a preforming station (30) according to the invention and a hot-pressing station (40) according to the invention for producing a formed part (10) from environmentally-friendly-degradable fiber material (11) by means of a fiber-forming process executed in the fiber-forming system (100), wherein the fiber-forming system (100) is designed to enable an automatic change of tools (2, 3, 400, 40u) from the molding station (20), preforming station (30) and or hot-pressing station (40). The invention also relates to such a molding station (20), preforming station (30) and hot-pressing station (40) and a corresponding method (200) for automatically changing tools in the fiber-forming system (100).