Vertical Packaging Film Alignment During Continuous Sealing
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Solution Overview
Problem
Existing vertical packaging machines face issues with maintaining the correct positioning of film edges and folds relative to the longitudinal sealing tool, leading to potential defects in packaging due to lateral movements of the film, affecting the appearance and shape of the final package.
Innovation Solution
A vertical packaging machine with a feed module and fold forming module that can be independently adjusted using actuators to maintain the correct positioning of film edges and folds relative to the longitudinal sealing tool, facilitated by detection means that allow for real-time adjustments without stopping the machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the film is supplied continuously through the forming tube, then productivity is improved, but the positioning precision of film edges and folds deteriorates due to lateral movements
Solution Approach 1:
The patent applies the dynamics principle by making the feed module and fold forming module movable relative to the frame through actuators. This allows the system to dynamically adjust the positions of these modules in real-time during continuous film supply, correcting lateral deviations while maintaining continuous operation without stopping the machine.
Solution Approach 2:
The patent implements feedback by using detection means to continuously monitor the position of film edges and folds, then feeding this information back to the control unit which actuates the feed module and fold forming module to correct positioning errors. This closed-loop control maintains positioning precision throughout continuous operation.
2Manufacturing precision
If detection means are added to monitor film position, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent applies the self-service principle by designing a system where the detection means automatically detect positioning deviations, the control unit processes this information, and the actuators automatically correct the positions without requiring external intervention. This automation reduces operational complexity while maintaining high precision.
3Manufacturing precision
If actuators are added to adjust feed module and fold forming module positions, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent makes the feed module and fold forming module dynamically adjustable through actuators that can move these modules along the film supply path. This dynamic adjustability allows precise positioning correction during operation while integrating the complexity into a coordinated system rather than separate fixed components.
Data Source
AI summary
Packaging machine that includes a frame, a feed module configured to supply a film, a fold forming module configured to receive the film and for generating at least one longitudinal fold in said film, actuation means with a first actuator to cause the movement of the feed module with respect to the frame, and with a second actuator for moving the forming module with respect to the feed module. A control unit is configured to cause, while the film is being supplied, the first actuator to move at least the feed module with respect to the frame and the second actuator to move the forming module at least with respect to the feed module.