Plastic Hollow Part Molded Support Ring for Hose Connection
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Solution Overview
Problem
The manufacturing of plastic hollow parts with connecting contours for attaching elastomer hoses often requires mechanical reworking, leading to residual cuttings that can pose hazards, especially in clean air applications, causing potential engine damage and performance loss.
Innovation Solution
Embedding a support ring within the connecting contour during the molding process eliminates the need for reworking, ensuring a stable attachment and preventing hazardous materials from reaching downstream components by using a filler material to create a fused or shrink-fit bond with the support ring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mechanical reworking is performed on the connecting contour, then dimensional precision is improved, but harmful cuttings are generated that can damage downstream components
Solution Approach 1:
The support ring is extracted from the post-molding insertion process and embedded directly into the mold during the molding process itself. This removes the need for subsequent mechanical reworking operations that generate harmful cuttings, while still achieving the required dimensional precision for stable attachment of elastomer hoses.
Solution Approach 2:
The support ring is preliminarily positioned within the mold before the plastic molding process begins. This preliminary placement allows the support ring to be integrated into the connecting contour during molding, eliminating the need for later mechanical reworking and preventing the generation of harmful cuttings.
2Reliability
If a support ring is inserted after molding, then attachment stability is improved, but additional manufacturing steps and complexity are required
Solution Approach 1:
The support ring insertion operation is merged with the molding process itself. The support ring is placed in the mold along with the hollow part, and both are formed in a single integrated process, eliminating the need for separate post-molding insertion steps and reducing overall manufacturing complexity.
Solution Approach 2:
The support ring is preliminarily positioned in the mold before molding begins. This preliminary action ensures the support ring is correctly placed for stable attachment while integrating the operation into the molding process, avoiding additional manufacturing steps.
3Manufacturing precision
If cuttings-producing machining is used, then connecting contour precision is improved, but time consumption increases
Solution Approach 1:
The support ring is preliminarily positioned in the mold before molding begins, allowing the connecting contour to be formed with sufficient precision directly during molding. This eliminates the need for time-consuming post-molding machining operations while maintaining the required precision for stable attachment.
Solution Approach 2:
The time-consuming mechanical reworking operation is removed from the manufacturing process entirely. By embedding the support ring during molding, the process achieves the required precision without the need for subsequent cuttings-producing machining, thereby increasing productivity.
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 method provides a reliable and safe manufacturing process for plastic hollow parts, ensuring secure attachment without residual cuttings, thus preventing hazards to downstream components and maintaining dimensional precision.
Implementation Method 1
a filler material is injected that is provided for filling the cavity and for securing the support ring on the plastic hollow part
Implementation Method 2
a filler material is injected that is provided for filling the cavity and for securing the support ring on the plastic hollow part
Data Source
AI summary
The invention relates to a plastic hollow part (1) and to a method for the manufacture of a plastic hollow part, wherein plastic material is introduced into a molding tool by means of a blowing or injection molding process, forming a hollow connection contour (10) and the plastic is formed into a hollow part (1), wherein a support ring (4) is molded into the area of the connection contour (10).