Pivoting Bag Support for Wrinkle-Free High-Speed Filling
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Solution Overview
Problem
High-speed bag filling machines face challenges in maintaining uniform bag shape and reducing power consumption, as increased speed often leads to bag wrinkling and irregular shapes, complicating palletization, and existing solutions either consume excessive power or result in suboptimal filling.
Innovation Solution
A machine with a pivoting supporting device that balances the bag's base between filling, welding, and cooling stations, using a pivot shaft and actuating means to alternate the supporting surface's position, reducing power consumption and preventing wrinkles by holding the bag at an angle before filling and pivoting during the filling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bag filling speed is increased, then productivity is improved, but the bag bottom wrinkles and the bag shape becomes irregular
Solution Approach 1:
The supporting surface is made dynamically movable rather than fixed, allowing it to pivot between different positions (raised and lowered) during the filling process. This dynamic adjustment enables the system to maintain bag shape uniformity even at high filling speeds by adapting the supporting surface position to the specific stage of the filling operation.
2Manufacturing precision
If the bag opening is raised during filling, then bag shape uniformity is improved, but power consumption increases
Solution Approach 1:
The supporting surface performs periodic raising and lowering actions in synchronization with the filling cycle. By alternating between raised and lowered positions at specific intervals during filling, the system achieves bag shape uniformity while minimizing the duration and intensity of power-consuming movements, thus reducing overall power consumption compared to continuously raised configurations.
3Manufacturing precision
If the supporting surface moves up and down during filling, then filling uniformity is improved, but the bag upper part deforms
Solution Approach 1:
The supporting surface is designed to provide localized support specifically at the bag bottom region during filling, rather than supporting the entire bag uniformly. This localized action at the bottom allows filling uniformity to be achieved without causing deformation in the upper bag portion, as the support action is concentrated where it is most needed for preventing wrinkles and ensuring even filling distribution.
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
Enables high-speed bag filling with reduced power consumption and uniform bag shape, facilitating efficient palletization by maintaining a balanced and regular bag geometry, while reducing cycle time and improving filling homogeneity.
Implementation Method 1
raising the bag during filling involves moving a considerable mass, increasing the power consumption of the machine. Another added issue is that by raising the bag, due to the inertia caused by the mass, the maximum speed that the station can reach is limited.
Data Source
AI summary
The present invention relates to a machine for filling bags with a granular product comprising a filling station, a welding station, and a cooling station. The machine comprises a supporting device for supporting the bags below the stations. The device comprises a supporting surface assembled in a pivoting manner on a pivot shaft, and actuating means. The supporting surface has a first supporting segment for supporting the bags of the filling and welding stations on one side of the pivot shaft and a second segment for supporting the bag of the cooling station on the opposite side of said pivot shaft. The supporting surface can pivot in an alternating manner around said pivot shaft for moving the base of the bag which, in operation, is located in the filling station during filling. The invention also relates to a filling method.