Blow-Moulding Valve Block Layout for Compact, Replaceable Valves
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Solution Overview
Problem
Existing blow-moulding apparatuses face challenges in achieving a compact valve arrangement while maintaining ease of replacement and minimizing space requirements and dead spaces.
Innovation Solution
The device incorporates a housing block with a through-bore for the blowing nozzle, a movable piston valve with a valve chamber, and channels that connect the valve chamber to both the through-bore and external lines, with the second channel running partially in a cover to shorten the first channel and reduce space, allowing for compact and flexible positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the second channel runs in the housing block, then the structural integrity is maintained, but the space requirements increase and dead spaces are maximized
Solution Approach 1:
The second channel is segmented into two parts: one part runs in the housing block while another part runs in the cover. This segmentation allows the channel to utilize the three-dimensional space more efficiently, reducing the overall volume required while maintaining structural integrity.
Solution Approach 2:
The channel arrangement transitions from a two-dimensional planar layout to a three-dimensional configuration by utilizing both the housing block and the cover. This dimensional change allows the channel to route through different spatial zones, minimizing dead spaces and reducing the overall footprint of the valve unit.
2Volume of moving object
If the valves are arranged in a compact configuration, then the space requirements are reduced, but the ease of replacement deteriorates
Solution Approach 1:
The valve unit is segmented into modular components (valves, cover, housing block) that can be independently accessed and replaced. The cover can be removed to provide access to the valves, enabling easy maintenance while maintaining a compact overall configuration.
3Adaptability or versatility
If the first channel is made longer, then the valve arrangement can be more flexible, but the dead spaces are increased and efficiency reduced
Solution Approach 1:
The first channel utilizes three-dimensional routing through both the housing block and the cover, allowing flexible valve positioning without requiring excessive channel length. This spatial optimization minimizes dead spaces while maintaining positioning flexibility.
Data Source
AI summary
A device of a blow-moulding apparatus for moulding hollow bodies, in particular a stretch blow-moulding machine, is disclosed. The device includes a housing block with a through-bore, at least one valve with a movable piston and with a valve chamber, a first channel which runs in the housing block and which connects the valve chamber to the through-bore, a second channel which connects the valve chamber to an external line, and a cover for fastening the valve to the housing block. The valve connects the first channel and the second channel to one another and separates them from one another. The second channel runs at least partially in the cover and/or at least one part of the valve chamber is arranged in the cover and surrounds the piston. The device is small and compact and the valves may be replaced in a simple manner.