Sensor-Verified Bag Opening Assembly for Packaging Accuracy

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Solution Overview

Problem

Existing bagging machines lack efficient and reliable mechanisms for automated bag opening and verification, leading to potential errors in the packaging process.

Innovation Solution

A bagging machine with a supply handling assembly and bag loading assembly that includes reciprocating components for automated bag opening and closing, equipped with sensors to verify the presence of bags and adjust the operation sequence based on sensor data, ensuring accurate bag handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automated bag opening mechanisms are implemented, then productivity is improved, but device complexity increases

Engineering Contradiction:
Improvepackaging speedVSAvoidmechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The bag opening mechanism is divided into separate functional components: a first finger assembly for engaging the bag, a second finger assembly for opposing engagement, and a reciprocating pressure plate that actuates these fingers. This segmentation allows each component to perform a specific function independently, improving reliability while maintaining automated operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A sensor is integrated into the system to detect whether a bag is present between the first and second fingers during the reciprocating motion. This feedback mechanism allows the system to verify proper bag engagement and detect missing or misaligned bags, improving productivity by preventing errors while adding minimal complexity through a single sensor component.

Inventive Principle:
Principle #23Feedback

2Reliability

If bag verification sensors are added, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improvebag handling accuracyVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A sensor is integrated into the system to detect whether a bag is present between the first and second fingers during the reciprocating motion. This feedback mechanism allows the system to verify proper bag engagement and detect missing or misaligned bags, improving reliability by preventing errors while adding minimal complexity through a single sensor component.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system automatically detects and responds to bag presence or absence through the integrated sensor, eliminating the need for manual verification. The machine can autonomously identify when a bag is missing or improperly positioned and adjust operation accordingly, improving reliability without requiring additional manual inspection steps.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If reciprocating pressure plate mechanism is used, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveautomated bag openingVSAvoidmechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The pressure plate combines multiple functions into a single reciprocating component: it applies pressure to engage the bag, actuates the first and second finger assemblies for opening, and works in coordination with the sensor for verification. This merging of functions improves ease of operation by automating the entire bag opening sequence through one coordinated motion while avoiding the need for multiple separate mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12559276B2Bag opening verification system and method for operating a bagging machine
Publication Date: 2026.02.24 PREGIS LLC
  • US12559276B2 patent drawing
  • US12559276B2 patent drawing
  • US12559276B2 patent drawing

AI summary

A bagging machine may include a supply handling assembly, a bag loading assembly and a controlled, which may control certain operations of the bagging machine. The bag loading assembly may include a bag opening assembly that reciprocates back and forth and which supports movable film grippers. The bagging machine may be provided with one or more sensors operatively positioned to detect whether a film is present between the grippers, such as during an opening sequence, and the controller may be configured to modify the operation (e.g., interrupt or re-start an opening sequence, generate an alert signal, etc.) of the bagging machine based on the data received from the sensor.