Labeling Machine Control for High-Speed Container Flow Gaps

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Solution Overview

Problem

Conventional labeling machines struggle to react to gaps in container flow at high capacity outputs, such as 60,000 to 70,000 containers per hour, due to insufficient time for speed changes and mechanical inertia issues, especially when integrated with block-form container handling systems that lack continuous capacity regulation.

Innovation Solution

A container handling system with a sensor device positioned on a transport stretch upstream of the labeling machine, providing a temporally preemptive control signal to manage the labeling machine's operational states, including immediate speed adjustments and label provision, using a labeling unit with an active label strip store and controlled drives to compensate for mechanical inertia.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the labeling machine operates at high capacity output (60,000 to 70,000 containers per hour), then productivity is improved, but the machine cannot react in time to gaps in container flow due to insufficient time for speed changes and mechanical inertia

Engineering Contradiction:

Improvecapacity outputVSAvoidreaction to container flow gaps

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The control unit initiates speed reduction of the label strip feed and labeling unit components before the actual gap occurs in container flow. By detecting container presence/absence in advance and preemptively adjusting speeds, the system avoids mechanical failures and label disruptions when gaps occur at high production speeds

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the labeling machine stops and starts frequently to react to gaps in container flow, then reliability is improved, but productivity deteriorates due to loss of time

Engineering Contradiction:

Improvereaction to container flow gapsVSAvoidcapacity output

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

Instead of binary stop-start operation, the control unit dynamically adjusts the operating speed of the labeling machine and label strip feed in real-time. By continuously modulating speeds in response to container flow conditions, the system maintains reliability while minimizing productivity loss through smooth, incremental adjustments rather than complete stops

Inventive Principle:

Principle #15Dynamics

3Reliability

If the speed of labeling unit components is reduced quickly to react to gaps, then reliability is improved, but mechanical failure occurs due to high mechanical and dynamic moment of inertia

Engineering Contradiction:

Improvereaction to container flow gapsVSAvoidmechanical failure

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The control unit begins speed reduction of high-inertia components like label strip rolls well in advance of when the gap occurs. This preliminary speed adjustment allows these massive components to decelerate gradually using their own inertia, avoiding mechanical stress and failure while still responding reliably to container flow gaps

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system compensates for the mechanical inertia of labeling unit components by preemptively adjusting speeds. The control unit calculates required speed changes based on the known moment of inertia of components, cushioning against potential mechanical failures by avoiding abrupt speed changes that would stress the mechanical system

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Reliability

If buffer and storage stretches are added to the container handling system, then reliability is improved by avoiding gaps, but device complexity and structural volume increase

Engineering Contradiction:

Improvecontainer flow continuityVSAvoidsystem structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The control unit continuously monitors container flow and uses this feedback to dynamically adjust the speeds of the labeling machine and label strip feed. This closed-loop control system maintains reliable operation without requiring physical buffer stretches, as the feedback-driven speed adjustments smoothly accommodate variations in container flow

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The labeling machine's control unit automatically detects and responds to container flow conditions without external intervention or additional buffer infrastructure. The system serves itself by using its own control capabilities to maintain continuous operation, eliminating the need for separate buffer and storage stretches

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10138015B2Method for controlling a labeling machine, labeling unit and container handling system

Publication Date: 2018.11.27 KHS GMBH

AI summary

A process for using a first labeling system that is a constituent of a block-form first container-handling includes, before switching between said labeling and non-labeling modes of a labeling unit thereof, providing a control signal to a control unit that controls the labeling machine, the control signal being indicative of a gap in container flow. the control signal occurs before the gap in container flow reaches a container inlet of the first labeling system.