Capsule Closure Force Sensor for Defective Capsule Detection

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Solution Overview

Problem

Existing devices for filling and closing capsules do not effectively detect defective or damaged capsules during the closure process, leading to potential machine malfunctions.

Innovation Solution

Incorporation of a force sensor to register the force acting on the capsule during closure, along with an evaluating unit to analyze the force progression and compare it with predefined limit values, allowing for the identification of defective capsules and their automatic removal from the production process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a force sensor is added to detect closing force, then defective capsule detection capability is improved, but device complexity increases

Engineering Contradiction:
Improvedefective capsule detection capabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical inspection systems with a force sensor that directly measures closing force to detect defective capsules. The force sensor substitutes for elaborate mechanical detection mechanisms, using force measurement instead of complex mechanical interactions to identify capsule defects.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The force sensor acts as an intermediary between the capsule closing process and the detection system. Rather than directly observing capsule integrity, the system uses the force sensor as a mediator to infer capsule quality through force measurements during the closing operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If force progression analysis as a function of path length is implemented, then measurement precision is improved, but device complexity increases

Engineering Contradiction:
Improvefault detection precisionVSAvoidevaluating unit complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent adds the path length dimension to the force measurement analysis. Instead of merely measuring force magnitude, the system analyzes force as a function of path length, creating a two-dimensional analysis that significantly improves fault detection precision without requiring complex additional hardware.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The evaluating unit is pre-programmed with knowledge of typical force-progressions for proper capsule closing. By having this reference information prepared in advance, the system can quickly compare actual measurements against expected patterns, improving detection precision without adding real-time computational complexity.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If automatic ejection of defective capsules is implemented, then productivity is improved through continuous operation, but device complexity increases

Engineering Contradiction:
Improveproduction efficiencyVSAvoidautomated ejection system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system implements a feedback loop where force sensor measurements are continuously monitored, defective capsules are automatically identified, and the ejection mechanism is triggered in response. This closed-loop feedback system maintains productivity by automatically removing defects without requiring complex manual intervention systems.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The capsule filling and closing system performs self-inspection and self-correction by automatically detecting and ejecting defective capsules. The system serves itself by using its own force measurement capabilities to identify and remove defects, eliminating the need for separate complex inspection and removal systems.

Inventive Principle:
Principle #25Self-service

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

Enables early recognition and removal of defective capsules, preventing machine malfunctions by accurately determining the closure quality through force pattern analysis, ensuring proper capsule closure and maintaining production efficiency.

Implementation Method 1

at least one force sensor is provided to register a force which acts on the capsule during the closure

Methodology Applied
Scientific EffectForce sensing: Force

Data Source

PatentUS10641669B2Device and method for determining a closing force during the closure of a capsule
Publication Date: 2020.05.05 SYNTEGON TECHNOLOGY GMBH
  • US10641669B2 patent drawing
  • US10641669B2 patent drawing
  • US10641669B2 patent drawing

AI summary

A device and a method for determining a closing force, the device including at least a lower part segment (45) for receiving at least one capsule lower part (15), at least one upper part segment (44) for receiving at least one capsule upper part (13), at least one closing means (47) that acts upon the capsule lower part (15) and/or the capsule upper part (13) for closure, wherein at least one force sensor (42, 46) is provided for absorbing a force (F) that acts upon the capsule (12) during closure.