Parallel Pressing and Ejection in Rotary Die Tool for Briquetting
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Solution Overview
Problem
Existing briquetting processes are inefficient due to sequential operation of pre-pressing, main pressing, and ejection, which limits machine speed and increases power demand.
Innovation Solution
A method and arrangement for manufacturing compacts where pre-pressing, main pressing, and ejection are performed in parallel working directions using a sequentially rotating die tool receptacle, with pre-pressing using a pre-pressing punch or stuffing screw and main pressing using a main pressing punch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pre-pressing, main pressing and ejection are performed sequentially, then the process is simple to implement, but machine speed is limited and productivity is reduced
Solution Approach 1:
The pressing process is divided into three independent operations (pre-pressing, main pressing, ejection) that can be performed simultaneously on different parts of the die tool. Each operation has its own punch and timing control, allowing parallel execution and thereby increasing machine speed without excessive complexity
Solution Approach 2:
Pre-pressing is performed as a preliminary action before main pressing on the same material. By pre-compressing the material partially, the subsequent main pressing requires less force and time, enabling faster cycle times and higher productivity while maintaining process simplicity
2Power
If pre-pressing, main pressing and ejection are performed sequentially, then device complexity is low, but power demand increases
Solution Approach 1:
The three operations are executed in periodic cycles with precise timing control. By overlapping the timing of pre-pressing, main pressing and ejection operations, the system reduces peak power demand while maintaining all necessary processing steps, achieving lower power consumption without losing operational complexity
3Manufacturing precision
If pre-pressing is performed before main pressing, then material compaction is improved, but processing time increases
Solution Approach 1:
Pre-pressing is performed as a preliminary action that prepares the material for main pressing. By partially compacting the material first, the subsequent main pressing achieves better final compaction with reduced time, as the material is already partially prepared and requires less processing time for the final compression stage
Solution Approach 2:
The pre-pressing and main pressing operations are designed to continue the compaction action without interruption. The pre-pressing punch and main pressing punch operate in a continuous sequence on the same material, ensuring that the compaction process is uninterrupted and time-efficient while achieving superior material density
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 enhances efficiency by allowing simultaneous operation of pre-pressing, main pressing, and ejection, reducing power demand and increasing throughput while maintaining a simple construction and implementation.
Implementation Method 1
pre-pressing the feedstock (11) into a pre-agglomerate (12)
Implementation Method 2
main pressing of the pre-agglomerate (12) into a compact
Data Source
AI summary
A method of manufacturing compacts and an arrangement for manufacturing compacts, in which the disadvantages of the state of the art are overcome and an efficient method and at the same time a simple construction and a simple implementation are achieved. This involves a method for manufacturing compacts, wherein after feeding the feedstock, pre-pressing into a pre-agglomerate using at least one pre-pressing punch or at least one stuffing screw and subsequently main pressing of the pre-agglomerate into a compact in at least one pressing die using at least one main pressing punch and subsequently ejection of the compact from the at least one pressing die are performed, pre-pressing, main pressing and ejection being performed in a mutually parallel working direction. This also involves an arrangement for manufacturing compacts, wherein at least one pressing die is provided in die tool receptacle with a feed for feedstock.