Servomotor Sealing Jaw Control for Bag Envelope Packaging
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Solution Overview
Problem
The existing device for manufacturing a package unit with a bag in an envelope requires a longer dwelling time in the sealing station due to the formation of welded seams, which affects the efficiency and speed of the packaging process, and relies on spring elements for precise control of machine components, making it cumbersome and prone to errors.
Innovation Solution
A device with a sealing station that uses servomotors to drive sealing jaw elements and counter-jaw elements, eliminating the need for spring elements and allowing for precise control of the sealing process through torque and angular velocity adjustments, enabling faster and more reliable sealing of the bag within the envelope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring elements are used to control machine components in the sealing station, then the components can be forcibly guided without slippage, but the device becomes cumbersome and complex with exacting tolerance requirements
Solution Approach 1:
The patent replaces the mechanical spring-based control system with an automated control system that uses a controller to actuate the sealing jaw elements. This substitution eliminates the need for spring elements and complex mechanical linkages, reducing device complexity while maintaining or improving reliability through electronic control.
Solution Approach 2:
The patent changes the control parameter from mechanical force (springs) to electronic control signals. The controller adjusts parameters such as actuation timing, force application, and positioning to ensure reliable sealing without requiring complex mechanical components.
2Reliability
If welding is used to seal the envelope, then a flavour-tight package is achieved, but the processing time increases due to the required cooling time
Solution Approach 1:
The patent implements continuous sealing action where the sealing jaw elements move continuously through the sealing position. The automated control system ensures that the sealing process is uninterrupted and optimized, reducing the total time required while maintaining the quality of the welded seal.
Solution Approach 2:
The patent uses dynamically controlled sealing jaw elements that can adjust their position and application force in real-time. This dynamic control allows the system to optimize the sealing process speed while ensuring proper welding and cooling, reducing overall processing time without compromising seal quality.
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 reduces the processing time and enhances the reliability of the sealing process, allowing for faster production and precise control of the sealing operation without the need for spring elements, thus improving the overall efficiency and accuracy of the packaging unit.
Implementation Method 1
precise control of the sealing process through torque and angular velocity adjustments
Implementation Method 2
servomotors to drive sealing jaw elements and counter-jaw elements
Implementation Method 3
introduce a sufficient quantity of heat into the envelope to at least initially melt it such that the webs of the envelope abutting against each other melt on and are welded together
Implementation Method 4
seal, during the rotary motion of the carousel, the U-shaped borders of the envelope by welding
Data Source
AI summary
The present invention relates to a device and a method for manufacturing a bag received in an envelope and containing a brewable material with a bag manufacturing means which is configured to manufacture a bag containing brewable material, and with a sealing station with a sealing jaw element and a counter-jaw element which act on the envelope from opposite sides to seal in the bag. The device is further developed for a reliable and safe manufacture of the packing unit consisting of a bag and an envelope by the sealing jaw element being fixed to a sealing jaw swivel arm at which a sealing jaw connecting rod is applied, and the counter-jaw element being fixed to a counter-jaw swivel arm at which a counter-jaw connecting rod is applied, and by the sealing jaw connecting rod and the counter-jaw connecting rod being each eccentrically connected to a common drive shaft of a servomotor. In the method according to the invention, the contact force between the sealing jaw element and the counter-jaw element is controlled via the torque of the servomotor actuating the sealing jaw element and/or the counter-jaw element.