Packaging Machine Printing Timing Using Motor and Package Detection
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Solution Overview
Problem
Existing packaging machines face inaccuracies in printing on packages due to variations in production speed and package presence, leading to off-centered printing.
Innovation Solution
A packaging machine equipped with detectors to monitor motor movement and package presence, coupled with a control unit to dynamically adjust printing time based on these signals, ensuring precise alignment and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the packaging machine operates at high production speed, then productivity increases, but printing accuracy deteriorates due to speed variations causing off-centered printing
Solution Approach 1:
The system employs detectors (first detector for motor position, second detector for package presence) that provide real-time feedback signals to the control unit. The control unit dynamically adjusts the printing time based on these feedback signals, compensating for speed variations and maintaining printing accuracy even at high production speeds.
Solution Approach 2:
The printing time is made dynamic rather than fixed. The control unit calculates and adjusts the printing time in real-time based on the motor's actual movement signals and package presence detection, allowing the system to adapt to speed variations and maintain precision during high-speed operation.
2Device complexity
If the printing time is fixed, then the device complexity is reduced, but printing accuracy deteriorates due to inability to compensate for production variations
Solution Approach 1:
The control unit receives feedback signals from detectors monitoring motor position and package presence, then dynamically adjusts printing time accordingly. This feedback mechanism enables high printing accuracy without requiring overly complex mechanical adjustment mechanisms, balancing simplicity and precision.
Solution Approach 2:
The system replaces complex mechanical timing mechanisms with an electronic control system that uses software-based time calculation and adjustment. The control unit computes the optimal printing time based on detector signals, substituting mechanical complexity with programmable logic and electronic control.
Data Source
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AI summary
There is described a packaging machine (1) configured for producing sealed packages (2) containing a pourable product, the packaging machine (1) comprising: - an outfeed conveyor (15), configured to convey the sealed packages (2) along an advancement path (A), the outfeed conveyor (15) being driven by a motor (150), - a first detector (20), coupled to the motor (150) and configured to generate a first signal (S1) indicative of a movement of the motor (150), - a second detector (22), configured to generate a second signal (S2) indicative of a presence of sealed packages (2) on the outfeed conveyor (15), - a printer (24) configured to print a code on the sealed packages (2), and - a control unit (26) configured to drive the motor (150) as well as the printer (24) and further configured to receive the first (S1) and second (S2) signal, and calculate a printing time as a function of the first (S1) and second (S2) signal.