Deep-Drawn Container Forming with Resilient Stamping Body
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Solution Overview
Problem
Existing deep-drawn container devices have poor stackability due to irregularities in the cup wall, leading to increased handling and processing difficulties during packaging and storage.
Innovation Solution
A device with a stamping body that forms a clearance between the stamping body and the container wall in the opening region, featuring a reduced cross-sectional area and conicity, made from materials like natural rubber or urethane rubber with additives for improved sliding properties, and optionally vulcanized on a metal carrier element, to enhance precision and stackability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a stamping body with a conically configured mold is used to avoid irregularities in the cup wall, then manufacturing precision is improved, but stackability deteriorates
Solution Approach 1:
The stamping body is designed with different geometric properties in different regions: the upper region (in the opening region of the container) has a smaller diameter than the lower region, creating a tapered profile. This local variation in geometry allows the upper portion to clear the container wall during ejection while the lower portion maintains contact for precision forming, thus resolving the contradiction between manufacturing precision and stackability
2Manufacturing precision
If the stamping body completely rests on the material web in the region of the mould, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The stamping body is segmented into functionally distinct regions: an upper region with reduced cross-sectional area that creates clearance during ejection, and a lower region that maintains contact with the material web for precision forming. This segmentation allows each region to perform its specific function independently, achieving high precision without requiring additional complex devices
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
The solution significantly improves the stackability of deep-drawn containers by maintaining high precision and conicity during demolding, allowing for efficient vertical stacking and reduced handling efforts.
Implementation Method 1
a stamping body (10) consisting of a resilient material is used to avoid irregularities in the cup wall
Implementation Method 2
a clearance is formed in the end position of the stamping body, in which the latter is in its lowest position in the mould, between the stamping body and the container wall in the region of the opening region of the container
Data Source
AI summary
The invention relates to a device for forming deep-drawn containers, with a mold, which has a conical shape and interacts with a stamping body, which operatively connects with a material web when the stamping body enters the mold, the stamping body containing a resilient material, at least at its outer periphery, and the stamping body having a shape on the side facing the material web, the conicity of which is less than the conicity of the mold. According to the invention it is provided that the stamping body has a slightly smaller size than the opening region of the mold, and in that when the stamping body is completely located in the mold, said stamping body has a clearance with respect to the material web, at least in the later edge region of the container.