Single Stroke Compression Molding Dust Collection
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Solution Overview
Problem
Single stroke compression molding machines face contamination issues due to powdery material residue on the die table during the production of multi-layer tablets and dry-coated tablets, lacking effective dust collection mechanisms like rotary compression molding machines.
Innovation Solution
A single stroke compression molding machine with a die table, slidable punches, and a dust collecting mechanism that includes a driving means, dust collecting case, and suction duct to collect dust on the die table surface during the compression process, allowing simultaneous dust collection and tableting, mirroring the compression conditions of rotary machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple powder supplying means are used to produce multi-layer tablets in a single stroke compression molding machine, then the versatility and multifunctionality are improved, but powdery material residue on the die table causes contamination between different powders
Solution Approach 1:
The harmful powdery material residue is extracted and removed from the die table surface using a dust collecting mechanism that includes a suction duct and dust collecting case, preventing contamination while maintaining the ability to produce multi-layer tablets
Solution Approach 2:
The dust collecting mechanism operates preliminarily between the supply of different powdery materials to remove residue from the die table, ensuring that no contamination occurs before the next powder is supplied
2Manufacturing precision
If a dust collecting mechanism is added to prevent contamination, then the purity of the molded product is improved, but the device complexity increases
Solution Approach 1:
The dust collecting mechanism is merged with the existing compression molding machine structure, where the dust collecting case and suction duct are integrated into the overall machine design, minimizing additional complexity while achieving effective dust collection
3Ease of manufacture
If cleaning is performed after product ejection, then the die table is cleaned, but contamination occurs during the feeding process between layers
Solution Approach 1:
The dust collecting mechanism performs cleaning preliminarily between powder supply operations rather than after product ejection, preventing contamination before it occurs during the feeding process
Solution Approach 2:
The dust collecting operation is performed continuously between each powder supply step, maintaining a clean die table surface throughout the entire multi-layer tablet production process rather than relying on periodic cleaning after completion
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
Prevents contamination by powdery materials on the die table, reduces production time, and enables smooth switching from single stroke to rotary compression molding, ensuring high-quality multi-layer and dry-coated tablets production.
Implementation Method 1
a suction duct (33) connected to the dust collecting case (32) and configured to decompress an internal space of the dust collecting case (32)
Data Source
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AI summary
The invention provides a single stroke compression molding machine including: a die table (1) having a die bore (12) penetrating vertically; a slidable lower punch (6) located below the die bore (12) and having an upper end to be inserted to the die bore (12); a slidable upper punch (7) located above the die bore (12) to face the lower punch (6) and having a lower end to be inserted to the die bore (12); and a dust collecting means (3) configured to collect dust on an upper surface of the die table (1) in a state where the lower end of the upper punch (7) is located in the die bore (12).