Compression Press with Segmented Electric Motors for Planarity Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Compression presses with fluid-dynamic pistons face challenges in maintaining planarity due to uneven compression resistance, leading to precision issues and potential damage to guides, especially when molding products with uneven mass distribution.
Innovation Solution
A compression press design utilizing multiple independent electric motors to control the movement of half-mould supports, ensuring maximum planarity by activating at least three motors to adjust and maintain precise alignment between the supports, with encoders for precise movement control and correction mechanisms to maintain deviations within tight tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluid-dynamic pistons are used to move the first forming plate, then the pressing operation can be performed, but planarity between the first and second plate cannot be maintained due to uneven compression resistance
Solution Approach 1:
The first forming plate is divided into multiple independently controllable zones (first zone, second zone, third zone), each driven by a separate electric motor. This segmentation allows each zone to independently adjust its position to compensate for uneven compression resistance, maintaining overall planarity during the pressing operation.
Solution Approach 2:
The system transitions from a static, uniformly driven plate to a dynamic, adaptively controlled plate. The control device continuously monitors and adjusts the position of each zone based on real-time compression resistance variations, enabling the plate to dynamically maintain planarity throughout the pressing process.
2Ease of operation
If fluid-dynamic pistons are used, then pressing can be performed, but precision of the press deteriorates due to variability in compression resistance
Solution Approach 1:
The pressing system is segmented into multiple independently controlled zones, each with its own drive mechanism and position control. This allows precise measurement and adjustment of each zone's position, maintaining overall press precision even when compression resistance varies across different areas of the workpiece.
Solution Approach 2:
The control device receives feedback on the position of each zone and adjusts the drive mechanisms accordingly. This closed-loop control system continuously monitors and corrects position deviations, ensuring high measurement precision and repeatability throughout the pressing operation.
3Adaptability or versatility
If the first plate encounters marked variability in compression resistance, then uneven mass distribution is compressed, but this creates absence of planarity between plates
Solution Approach 1:
Each zone of the first forming plate is equipped with independent control capabilities, allowing local adjustments to be made in response to local variations in compression resistance. This enables the system to adapt to uneven mass distribution while maintaining overall planarity, as each zone can independently compensate for local conditions.
Solution Approach 2:
The system dynamically adjusts the position and pressure applied by each zone based on real-time feedback about compression resistance variations. This dynamic adaptation allows the press to handle workpieces with uneven mass distribution while maintaining precise planarity control throughout the forming process.
4Productivity
If significant absence of planarity occurs, then product forming can proceed, but risk of damaging guides increases
Solution Approach 1:
The control device proactively adjusts the position of each zone before significant planarity deviations occur. By continuously monitoring and correcting position variations during the pressing operation, the system prevents the development of conditions that could lead to guide damage, ensuring both productivity and reliability.
Data Source
Figure 1~2
Figure 3~4
AI summary
A compression press comprising: -a first support (21) suitable for supporting a first half-mould; -a second support (22) suitable for supporting a second half-mould, said second support (22) being opposite the first support (21); the first and the second support (21, 22) being capable of being brought towards and/or away from each other; -at least a first, a second and a third electric motor (31, 32, 33) that control the movement of the first and the second support (21, 22) towards and away from each other. the first, the second and the third electric motor (31, 32, 33) act in a first, a second and a third zone (211, 212, 213) of the first support (21), respectively.