Modular Vacuum Lifter for Sheet Handling
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Solution Overview
Problem
Existing vacuum lifter apparatuses for sheet materials are limited by the weight and power requirements, leading to reduced speed and efficiency in processing workstations, and often require manual intervention to manage uneven sheets and separate waste, resulting in idle equipment and labor inefficiencies.
Innovation Solution
A modular vacuum lifter apparatus with a suction plate composed of multiple modules, each with independent air outlets and airflow channels, controlled by a controller to manage vacuum pressure distribution, allowing for precise and efficient lifting and handling of sheet materials, including features like a movable elongate bar for cleaning and a suction cup system for localized lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional vacuum lifter apparatus is used, then the lifting function is provided, but the weight and power requirements reduce speed and efficiency
Solution Approach 1:
The suction plate is divided into multiple modules (first module, second module, third module, fourth module) that can be independently controlled. Each module has its own air outlets and vacuum control, allowing selective activation of only the modules needed for the current sheet, thereby reducing the effective weight and power consumption while maintaining lifting capability.
Solution Approach 2:
The vacuum pressure is dynamically adjusted across different modules based on the sheet material's position and characteristics. The controller selectively activates vacuum in specific modules rather than applying uniform vacuum across the entire plate, optimizing power usage and reducing the effective operational weight.
2Productivity
If manual intervention is used to manage uneven sheets and separate waste, then proper handling is achieved, but equipment idle time and labor inefficiencies increase
Solution Approach 1:
The modular vacuum system automatically detects and adapts to uneven sheets by selectively activating modules based on sheet position and terrain. The system self-regulates vacuum distribution across modules without manual intervention, and automatically manages waste separation through the modular configuration, eliminating idle time and labor requirements.
Solution Approach 2:
The vacuum pressure parameters are dynamically changed across different modules based on real-time sheet conditions. The controller adjusts which modules are active and at what pressure levels, allowing the system to adapt to varying sheet uniformity and automatically handle waste separation without manual input.
3Reliability
If uniform vacuum pressure is applied across the suction plate, then lifting is simplified, but uneven sheets do not make proper contact
Solution Approach 1:
Different modules of the suction plate are assigned different vacuum pressure levels based on local sheet conditions. Modules contacting uneven portions of the sheet apply higher vacuum pressure, while modules over flat areas use lower pressure. This localized quality adjustment ensures reliable contact across the entire sheet surface without requiring complex overall system redesign.
4Adaptability or versatility
If the suction plate is made as a single integrated unit, then manufacturing is simpler, but adaptability to different sheet conditions is reduced
Solution Approach 1:
The suction plate is segmented into multiple independent modules, each capable of being controlled separately. This segmentation provides adaptability to different sheet conditions and uneven surfaces, as each module can be independently activated or adjusted. While manufacturing complexity increases slightly compared to a single unit, the modular design allows for standardized module production and assembly.
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 enhances the speed and efficiency of sheet material handling, reduces manual intervention, and improves the handling of uneven sheets by ensuring proper contact and separation, thereby increasing workstation utilization and reducing operational costs.
Implementation Method 1
The holes are connected to a source of vacuum pressure for applying vacuum suction through an array of holes in the plate
Data Source
AI summary
A vacuum lifter apparatus for lifting sheet material articles comprises an upper chassis, a modular lower suction plate supported beneath the chassis, a controller and a source of vacuum air pressure, the suction plate comprising a suction lifting surface for providing vacuum lifting pressure to said articles. The modular suction plate has plural side-by-side modules, each module providing a different portion of the suction lifting surface and having one or more air outlets, outlets of one module separate from outlets of other modules and in fluid communication with the corresponding portion of the suction lifting surface and not with different portions of the suction lifting surface. The chassis comprises at least one air outlet connected to said source of vacuum air pressure, and a plurality of separate air flow channels through the chassis. Each air flow channel has an associated air flow valve and a valve actuator.