Container Transfer Buffer Synchronizes Processing Stations

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Solution Overview

Problem

Existing container transfer devices between processing stations, such as blow molding and labeling machines, face issues with gaps in the container stream due to faulty or defective bottles, leading to intermittent operation and potential stoppages in downstream processing stations.

Innovation Solution

A device with two transfer units, a buffer system, and controllable transport units that accumulate and release containers synchronously with the second processing station, ensuring continuous operation even with intermittent delivery from the first station, using a combination of drive units, detection systems, and passive gripping mechanisms to manage container flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If containers are transferred directly from the first processing station to the second processing station without buffering, then the transfer device is simple and fast, but gaps in the container stream cause interruptions in the second processing station

Engineering Contradiction:
Improvecontinuous operation of second processing stationVSAvoidtransfer device structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The buffer stores containers in advance before they are needed by the second processing station. When containers arrive from the first processing station, they are temporarily held in the buffer, ensuring that the second station always has containers available, thus preventing interruptions and maintaining continuous operation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The buffer acts as an intermediary element between the first and second processing stations. It decouples the two stations, allowing the second station to operate continuously regardless of intermittent delivery from the first station, thereby resolving the contradiction between reliability and device complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If a buffer system is introduced to ensure continuous operation, then interruptions are prevented, but the device complexity and space requirements increase

Engineering Contradiction:
Improvecontinuous processing capabilityVSAvoidbuffer storage space
Core Design Contradiction:
ProductivityVSArea of stationary object

Solution Approach 1:

The buffer utilizes vertical space by stacking containers one above another instead of spreading them out horizontally. This dimensional change allows the buffer to store multiple containers in a compact vertical arrangement, maintaining continuous processing capability while minimizing the floor area occupied by the buffer system.

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

Data Source

PatentEP2301867B1Device for transferring containers between two processing stations and method for transferring containers between two processing stations
Publication Date: 2018.06.06 KRONES AG
  • EP2301867B1 patent drawingFigure 1
  • EP2301867B1 patent drawingFigure 2
  • EP2301867B1 patent drawingFigure 3

AI summary

The transfer device (10) is provided with a transfer unit (50), where a buffer (26) is provided with individual transfer units for the container (40). The transport units are movably controlled in such a way that the buffer interacts with the machining station in such a way that transfer of the container from the buffer to the machining station (22) takes place with chronological synchronizm.