Narrowed Die Pair Arrangement for Pressware Forming
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Solution Overview
Problem
Conventional pressware manufacturing processes are inefficient, leading to reduced productivity and quality issues due to the limitations of standard-sized equipment, where adding extra die pairs is not feasible without increasing the press size.
Innovation Solution
The introduction of a pressware forming apparatus with narrowed die pairs that can be arranged in a multi-level configuration, allowing for the addition of an extra die pair within a standard-sized forming station, enhancing cross-directional efficiency and productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standard-sized forming station is used with conventional die pairs, then equipment size is maintained, but productivity is limited and cannot be improved
Solution Approach 1:
The patent introduces a multi-level configuration where die pairs are arranged not only horizontally across the press width but also vertically at different heights. This three-dimensional arrangement allows additional die pairs to be accommodated within the same press footprint, increasing productivity without expanding equipment size. Specifically, die pairs can be positioned at multiple levels along the press direction, effectively utilizing the vertical dimension to pack more forming stations into the available space.
2Productivity
If additional die pairs are added to increase productivity, then pressware output improves, but equipment size must be increased
Solution Approach 1:
The patent implements a nested arrangement where die pairs are positioned at multiple levels, with upper-level die pairs nested above lower-level die pairs in the vertical direction. This nesting allows the system to accommodate more die pairs without increasing the horizontal footprint of the forming station. The multi-level configuration effectively packs additional forming capacity into the existing equipment envelope by utilizing vertical space.
3Productivity
If die pairs are narrowed in cross-direction, then more die pairs can be added, but die pair structural integrity may be compromised
Solution Approach 1:
The patent divides the forming station into multiple discrete, modular die pairs that can be independently configured and positioned. Each die pair is a self-contained unit that can be narrowed in cross-direction while maintaining its structural integrity through proper segmentation of the forming components. This modular approach allows optimization of each die pair's dimensions for high-density arrangement while preserving necessary strength through targeted structural design of individual segments.
4Productivity
If conventional forming tools are used, then equipment simplicity is maintained, but cross-directional efficiency is limited below 85%
Solution Approach 1:
The patent implements a dynamic, flexible die pair arrangement system that can be configured in multiple levels and positions within the forming station. This dynamic configuration allows optimization of cross-directional space utilization, achieving efficiencies greater than 85% by adaptively arranging die pairs to maximize the use of available press width and height. The system can adjust the number and positioning of die pairs at different levels to match production requirements.
Data Source
AI summary
The present invention provides an improved pressware forming apparatus. At least one of die pairs used in the apparatus can be narrowed in a cross-direction as compared to the cross-directional width of pressware forming tools used in prior an apparatus. The present invention allows addition of at least one additional die pair in the pressware forming tool when used in a standard sized pressware forming apparatus. The present invention also provides components for use in such apparatus and methods of making pressware from the apparatus herein.