Path Switching Device for Star Wheel Transport Systems

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing transport devices lack a simple and reliable method for switching between transport paths without stopping the star wheels, which complicates the efficient and safe guidance of containers.

Innovation Solution

A path switching device with a pivot bearing allows for rapid and reliable switching of the transport path by pivoting a base part about an axis parallel to the star wheels' central axes, featuring a conical entry area and a guide surface between two jaws, enabling tangential transfer between star wheels and automatic defective part detection and sorting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a path switching device is added to switch between transport paths, then path switching capability is improved, but device complexity increases

Engineering Contradiction:
Improvepath switching capabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The path switching device is segmented into functionally independent components: a base part with pivot bearing for path switching, and star wheels for container transport. This segmentation allows the switching function to be added without complicating the core transport mechanism, as each component performs its specific function independently.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base part with pivot bearing serves multiple functions: it supports the star wheels, enables path switching between first and second paths, and maintains container guidance. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in device complexity while achieving path switching capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Speed

If the path switching device pivots parallel to the star wheel level, then switching speed is improved, but stability of the pivoting process deteriorates

Engineering Contradiction:
Improveswitching speedVSAvoidstability of the pivoting process
Core Design Contradiction:
SpeedVSStability of the object's composition

Solution Approach 1:

The path switching is achieved by pivoting the base part in a direction parallel to the star wheel level (horizontal pivoting), rather than perpendicular to it. This dimensional approach allows rapid switching while the pivot bearing design ensures stability through proper constraint of movement axes and support structures.

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

Solution Approach 2:

The pivot bearing acts as an intermediary element between the base part and the support structure, enabling smooth and stable pivoting motion. It mediates the switching action by providing a controlled rotation axis that maintains stability during the pivoting process while allowing rapid transition between paths.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the axis of rotation is positioned closer to the entry area, then container guidance is improved, but the first length from axis to exit area becomes shorter than required

Engineering Contradiction:
Improvecontainer guidanceVSAvoidfirst length from axis to exit area
Core Design Contradiction:
Ease of operationVSLength of moving object

Solution Approach 1:

The entry area features a tapered design with conically approaching jaw walls that provide enhanced guidance and container alignment. This local quality improvement at the entry point compensates for the shorter overall length, ensuring proper container guidance is achieved through localized geometric features rather than relying solely on increased overall dimensions.

Inventive Principle:
Principle #3Local quality

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

Ensures rapid, reliable, and safe switching of transport paths without stopping the star wheels, allowing for efficient sorting and packaging of containers while protecting them from damage, and facilitating easy cleaning of the transport device.

Implementation Method 1

The path switching device comprises a pivot bearing in order to pivot the base part about an axis of rotation

Methodology Applied
Scientific EffectPivoting: Hinge

Implementation Method 2

The path switching device preferably includes a tapered lead-in area formed by the first and second jaws. The inlet area serves to guide the container onto the path switching device. The tapering entry area is particularly preferably formed by conically approaching jaw walls of the first and second jaw

Methodology Applied
Scientific EffectTapered guidance: Wedge

Implementation Method 3

the transport device also includes a drive to pivot the path switching device about the axis of rotation

Methodology Applied
Scientific EffectRotational motion: Axle

Data Source

PatentEP3074332B1Transfer device with path switching function
Publication Date: 2017.12.13 ROBERT BOSCH GMBH
  • EP3074332B1 patent drawingFigure 1~2
  • EP3074332B1 patent drawingFigure 3~4
  • EP3074332B1 patent drawingFigure 5

AI summary

The invention relates to a transport device comprising a path switching device (2) for switching a transport path, a first star wheel (3), and a second star wheel (4). The path switching device (2) comprises a base part (20), a first jaw (21), and a second jaw (22), said two jaws (21, 22) defining a transport surface (23) between each other, wherein the path switching device (2) can be pivoted about a pivot axis (D), and the pivot axis (D) is parallel to a first central axis (31) of the first star wheel (3) and a second central axis (41) of the second star wheel (4).