Multi-Opening Warm Forming Oven for Continuous Blank Heating
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Solution Overview
Problem
Existing production lines face challenges in efficiently heating aluminum blanks for warm or hot forming due to limited space and increased cycle times when transferring heated blanks, leading to energy loss and reduced throughput.
Innovation Solution
A multi-opening oven assembly with vertically aligned shelves and a rail system that allows simultaneous heating of multiple blanks, enabling continuous supply of heated blanks to forming stations, reducing cycle time and energy loss, and allowing for compact integration within existing production lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an oven is placed next to the production line, then the heating function is provided, but the transfer time increases and energy loss occurs
Solution Approach 1:
The oven is integrated directly into the production line by utilizing the press space, merging the heating function with the existing forming operation. This eliminates the need for separate oven placement and reduces transfer time between heating and forming stations.
Solution Approach 2:
A robot arm serves as an intermediary mechanism to transfer heated blanks directly from the press to the die set. This automated transfer system reduces manual handling time and maintains thermal energy by providing direct, rapid transfer between stations.
2Temperature
If an oven is placed next to the production line, then the heating function is provided, but thermal energy is lost during transfer
Solution Approach 1:
The oven and press are merged into a single integrated unit, eliminating the thermal transfer gap between heating and forming operations. This keeps the aluminum blank at elevated temperature throughout the process, minimizing thermal energy loss.
Solution Approach 2:
The heating and forming operations are continuous and seamlessly connected through the integrated press-oven-die system. The blank remains in the heated environment until immediately before forming, maintaining continuous thermal action and reducing energy dissipation.
3Temperature
If the oven takes up floor space, then heating capacity is provided, but the space is difficult to relocate
Solution Approach 1:
The oven is nested within the existing press structure, utilizing the vertical and horizontal space already allocated for forming operations. This nested configuration provides heating capacity without requiring additional floor space or complicating relocation efforts.
Solution Approach 2:
The press structure serves multiple functions: it houses the oven for heating, provides the forming die set, and acts as the structural framework. This multi-functionality eliminates the need for separate dedicated oven space, improving both space utilization and relocation flexibility.
4Device complexity
If a single-opening oven is used, then the structure is simple, but multiple blanks cannot be heated simultaneously
Solution Approach 1:
The oven is divided into multiple openings or chambers within the press, allowing simultaneous heating of multiple blanks at different stages. This segmented design maintains relative structural simplicity while enabling parallel processing of multiple workpieces.
Solution Approach 2:
The oven utilizes the vertical dimension within the press by stacking multiple heating zones or openings vertically. This allows multiple blanks to be heated simultaneously in different vertical levels, increasing throughput without significantly increasing horizontal footprint or overall complexity.
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 multi-opening oven assembly enhances production line efficiency by continuously providing heated blanks, reducing cycle time and energy loss, and enabling easy relocation without additional floor space, thereby improving throughput and operational costs.
Implementation Method 1
heating an aluminum blank in an oven
Data Source
AI summary
A multi-opening oven assembly for simultaneously heating a plurality of blanks, for example aluminum blanks, before forming the heated blanks in a production line is provided. The oven assembly includes vertically aligned shelves to present a plurality of chambers for heating the blanks. A table including an entry side platform and an exit side platform moves vertically along the oven assembly. A rail system extends along the platforms and the shelves to convey the blanks in and out of the chambers. Once one set of heated blanks is removed from a first chamber, the table moves vertically to a second chamber and is ready to receive the next set of heated blanks. A continuous supply of heated blanks is provided for high throughput. The oven assembly is preferably disposed in a press adjacent a forming station of an existing production line and thus, no additional floor space is required.