Adjustable Contact Pressure Filling System for Thin-Walled Containers
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Solution Overview
Problem
Existing filling systems face challenges in adjusting contact pressure to accommodate containers with different neck diameters, leading to excessive mechanical stress and potential damage or destruction, especially for thin-walled or plastic containers, due to fixed pneumatic pressure settings influenced by filling material and machine parameters.
Innovation Solution
The filling system allows for adjustable contact pressure by using a combination of process medium pressure and adjustable auxiliary medium pressure, such as air or liquid, to generate the total contact pressure, enabling adaptation to varying container diameters through electropneumatic control based on stored data and parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pneumatic device is designed to provide sufficient clamping pressure for containers with the largest mouth diameter, then containers with larger openings can be filled, but containers with smaller opening diameters are subjected to unnecessarily high mechanical stress
Solution Approach 1:
The pneumatic device incorporates an adjustable pressure mechanism that allows the clamping pressure to be dynamically adapted to match the specific container dimensions being filled, rather than maintaining a fixed high pressure setting for all container sizes
Solution Approach 2:
The system enables change of the pressure parameter in the pneumatic device to optimize the clamping pressure for each specific container type, matching the pressure to the container's mouth diameter and wall thickness characteristics
2Reliability
If the contact pressure is increased to ensure tight sealing for all container sizes, then sealing reliability improves, but thin-walled and plastic containers are damaged or destroyed
Solution Approach 1:
The contact pressure is made dynamically adjustable through the pneumatic device, allowing the system to apply only the minimum necessary pressure to achieve reliable sealing without exceeding the structural limits of thin-walled or plastic containers
Solution Approach 2:
The pressure parameter of the pneumatic device can be optimized for each container type, enabling the system to maintain sealing reliability while preventing damage by matching the pressure to the container's mechanical strength characteristics
3Force
If the pressure of the process medium is increased to maintain clamping force for larger containers, then clamping effectiveness improves, but the mechanical stress on smaller containers becomes excessively high
Solution Approach 1:
The pneumatic device allows the pressure of the process medium to be dynamically adjusted according to the container size, enabling the system to apply appropriate clamping force for each container type without subjecting smaller containers to excessive stress
Solution Approach 2:
The pressure parameter of the process medium in the pneumatic device can be optimized for each container type, allowing the system to maintain effective clamping force while preventing excessive mechanical stress by matching the pressure to the container's dimensions and structural characteristics
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
This solution ensures that containers are subjected to the optimal contact pressure, reducing mechanical stress and preventing damage, while maintaining the advantages of using a gaseous process medium for clamping and prestressing, and simplifying control and operational reliability of the filling process.
Implementation Method 1
which is subjected to the pressure (clamping or filling pressure) of a gaseous and/or vaporous process medium used during the filling process
Implementation Method 2
The gaseous and/or vaporous auxiliary medium with which the further component of the respective contact pressure is generated and whose pressure acting at least in the further pneumatic device can be adjusted
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a filling system for filling bottles, cans, or similar containers (2) with a liquid filling good, comprising at least one filling element (1, 1a) having at least one dispensing opening (7) for introducing the filling good into the particular container (2) in a controlled manner, means (10) for retaining and pressing the particular container (2) having a container opening (2.1) in a sealing position against the filling element (1, 1a) in the area of the dispensing opening (7), at least one pneumatic device (15.1, 16.1, 19) for producing at least one component of the press-on force, which pneumatic device can be exposed to the pressure (P1) of a gaseous and/or vaporous operating medium. In order to change and/or set the press-on force, a second component of said force is produced by a further hydraulic or pneumatic device (15.2, 16.2, 20), which is exposed to a variable or settable pressure (P2, P3, P5) of a liquid and/or gaseous and/or vaporous auxiliary medium preferably different from the process medium or is exposed to a vacuum (VAK).