Bag Manufacturing Machine Antenna Design for RF Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing machines for manufacturing bags from consumable materials like tubular mesh and plastic bands face challenges in identifying the correct materials for each batch, leading to errors in bag production due to interference issues with radiofrequency communication, especially when multiple rotating shafts are involved and motor-driven components affect the reading field.
Innovation Solution
The machine incorporates remote reading means with radiofrequency tags and antennas to identify consumable materials coupled to support elements, using a control unit to generate signals for controlling mechanical operations based on the material type, and features a specific antenna design with a microstrip strip and arch-shaped slot to overcome interference and ensure accurate reading across different angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple rotating shafts with motor-driven components are used to handle different consumable materials, then the machine can manufacture various types of bags with higher productivity, but radiofrequency communication interference occurs affecting material identification accuracy
Solution Approach 1:
The patent introduces a specific antenna design with microstrip strip and arch-shaped slot as an intermediary component between the radiofrequency tag and the reading system. This antenna structure acts as a mediator that filters and directs radiofrequency signals, blocking interference from motor-driven rotating shafts while maintaining communication with the tags on consumable materials. The antenna's geometric design creates a directional radiation pattern that excludes signals from motor areas, thus resolving the contradiction between maintaining high productivity with multiple shafts and ensuring accurate material identification.
2Loss of information
If radiofrequency tags are used for identifying consumable materials, then material identification capability is improved, but interference from motor-driven components and multiple rotating shafts degrades the reading field and causes communication errors
Solution Approach 1:
The patent applies local quality by designing the antenna with specific geometric characteristics (microstrip strip configuration and arch-shaped slot dimensions) that create localized electromagnetic field properties. The antenna's slot length and width are precisely controlled to generate a radiation pattern with directional lobes that concentrate energy toward the material identification zones while creating nulls or reduced intensity regions toward the motor-driven shafts. This local optimization of electromagnetic field distribution allows reliable tag reading in specific spatial zones while naturally filtering out interference from other areas of the machine.
3Manufacturing precision
If existing machines are modified to include material identification systems, then production accuracy is improved, but significant redesign and component replacement increases device complexity and cost
Solution Approach 1:
The antenna design is conceived as a universal component that can be integrated into various existing bag manufacturing machine configurations without requiring fundamental redesign. The microstrip strip and arch-shaped slot structure can be mounted on different machine architectures, accommodates various shaft arrangements, and works with standard radiofrequency tags. This universal design approach allows the same antenna component to serve multiple machine types and configurations, enabling existing machines to gain material identification capability through simple addition rather than complex redesign, thus improving production accuracy while minimizing increases in device complexity.
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 allows for precise identification of consumable materials, preventing errors in bag production by ensuring the correct materials are used for each batch, and can be easily integrated into existing machines without significant redesign or replacement, enhancing operational efficiency and reducing production errors.
Implementation Method 1
remote reading means for reading the information stored in a radiofrequency tag included in the mentioned portable storage
Implementation Method 2
control unit connected to the reading means which contains means for obtaining information from the radiofrequency tag and for automatically generating a control signal for operating the mechanical means
Data Source
AI summary
The present invention relates to a machine (1) for the manufacture of bags, comprising at least one support element (2, 3, 4) suitable for the detachable coupling of a corresponding portable storage (22, 33, 44) of a consumable material (22a, 33a, 44a) from which the bags are made, and mechanical means for making bags from the mentioned consumable material, remote reading means (5) being provided for reading the information stored in a radiofrequency tag (6, 7, 8) included in the mentioned portable storage; and with a control unit (18) which contains means for obtaining information from the radiofrequency tag, which allows identifying the type of consumable material coupled in the mentioned support element, and for automatically generating a signal for controlling the mechanical means, susceptible of being used to stop the operation of the machine, depending on the information obtained.