Plastic Bag Making Apparatus with Segmented Suction Path
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Solution Overview
Problem
Existing apparatuses for making plastic bags often fail to ensure complete discharge of wastes from multiple adjacent areas, leading to potential contamination of the plastic film and introduction of undischarged waste into the bags.
Innovation Solution
The apparatus generates an airflow in a suction path to guide and discharge wastes into divided sections, using optical sensors and a controller to detect and alarm for any undischarged waste, ensuring all waste is removed by detecting at multiple positions along the airflow direction in each section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single suction path is used to remove wastes, then the device structure is simple, but it cannot determine whether all wastes from multiple adjacent areas are completely discharged
Solution Approach 1:
The suction path is divided into multiple divided paths corresponding to each waste generation area. Partition plates are disposed within the suction path to create separate channels, allowing independent detection and verification of waste discharge from each area. This segmentation enables reliable confirmation that all wastes are removed while maintaining a relatively simple overall structure.
2Reliability
If wastes are suctioned without divided paths, then the detection system is simple, but undischarged waste may be attached to the plastic film and introduced into the plastic bag
Solution Approach 1:
The detection system is segmented with optical sensors positioned in each divided path to detect wastes independently. The controller is configured to monitor detection results from each path separately and determine whether wastes are completely discharged from each area. This segmented detection approach ensures high reliability in preventing contamination while keeping the detection system manageable.
Solution Approach 2:
The optical sensors provide feedback signals to the controller about the presence or absence of wastes in each divided path. Based on this feedback, the controller determines whether waste discharge is complete and can trigger alarms or control signals to feed rollers to prevent contaminated films from entering the bag-making process.
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 effectively prevents undischarged waste from being attached to the plastic film and introduced into the bags by ensuring all waste is detected and discharged, enhancing the reliability of waste removal and preventing contamination.
Implementation Method 1
the waste is detected by an optical sensor when being discharged to each of the divided paths
Implementation Method 2
an airflow is generated in a suction path so as to suction the waste of each of the areas
Data Source
AI summary
According to an apparatus for successively making the plastic bags, wherein the wastes 14 are formed in at least two areas adjacent to each other widthwise of the plastic film 1, and the apparatus can determine whether all of wastes 14 of each of the areas are discharged.The apparatus comprises at least one partition plate 20 in a suction path 16. The suction path 16 is divided into at least two widthwise of the plastic film 1. The wastes 14 is guided to each of the divided paths 21A, 21B, 21C, 21D and is discharged. The wastes 14 is detected by an optical sensor when the wastes 14 is discharged to each of the divided paths.