Box Sorting Device Using Angled Surfaces and Torque

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Solution Overview

Problem

Pharmacies face challenges in efficiently orienting and sorting boxes of varying sizes, weights, and geometries for automated storage and dispensing systems, leading to bottlenecks and increased space requirements, as existing solutions are either cumbersome or inefficient in handling and identifying boxes.

Innovation Solution

A device with a receiving surface having two non-vertical faces forming an angle, a motor system for translating boxes along a longitudinal direction, and means to apply a moment of force that tilts boxes to orient them parallel to the direction of advance, allowing continuous reorientation without human intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If boxes are handled from bulk containers using conventional gripping devices, then identification can be performed, but the tabs on cardboard boxes open easily causing contents to escape and handling to fail

Engineering Contradiction:
Improvehandling reliabilityVSAvoidbox tab opening
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces conventional mechanical gripping devices with an air jet system that uses compressed air to propel boxes. This substitution eliminates mechanical contact that causes tab opening, using pneumatic force instead to achieve reliable box handling and propulsion through the sorting device.

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

Solution Approach 2:

The patent introduces air jets as an intermediary medium between the handling system and the boxes. Instead of direct mechanical gripping, compressed air serves as the intermediary to propel and position boxes, preventing direct mechanical contact that would otherwise open the box tabs.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the operator grasps the object for handling, then the box can be moved, but the code side may be obscured causing identification to fail

Engineering Contradiction:
Improvebox handlingVSAvoidcode obscuration
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The patent replaces manual operator grasping with an automated air jet propulsion system. The air jets propel the boxes through the device without any physical contact, ensuring that the code sides remain visible and accessible for identification while eliminating the need for manual handling that could obscure codes.

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

Solution Approach 2:

The system allows boxes to be propelled and positioned automatically through the sorting device using air jets, without requiring manual intervention. The boxes essentially service themselves through the air-propelled mechanism, maintaining code visibility throughout the process.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If a circular surface with rotating mechanism is used to orient boxes, then boxes can be positioned, but the storage space is significantly lost

Engineering Contradiction:
Improvebox orientationVSAvoidstorage space
Core Design Contradiction:
Ease of operationVSArea of stationary object

Solution Approach 1:

The patent inverts the conventional approach by using a flat planar surface with angled sides instead of a circular curved surface. The flat surface with inclined edges naturally orients boxes through gravity and geometry as they come to rest, achieving the same orientation function without the space-consuming circular footprint.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent inverts the conventional orientation mechanism by using a flat surface with angled sides rather than a rotating circular mechanism. Instead of actively rotating boxes to orient them, the system uses the geometry of the flat surface to passively guide and orient boxes as they settle, achieving orientation with minimal space.

Inventive Principle:
Principle #13The other way round (Inversion)

4Manufacturing precision

If boxes are moved to a measurement and orientation surface then picked up by robotic manipulator, then orientation is achieved, but the number of steps increases slowing down the process

Engineering Contradiction:
Improvebox orientation precisionVSAvoiddispensing speed
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent merges the orientation function directly into the dispensing pathway by using a flat surface with angled sides that naturally orients boxes as they are propelled through the system. This eliminates the need for separate orientation steps and robotic manipulation, combining multiple functions into a single integrated process that maintains precision while improving speed.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent enables continuous propulsion of boxes through the device using air jets, maintaining continuous useful action throughout the process. Boxes are continuously propelled, oriented, and dispensed in an uninterrupted flow, eliminating the stop-and-go nature of manual or robotic manipulation that slows down the process.

Inventive Principle:
Principle #20Continuity of useful action

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 efficient orientation and sorting of boxes to facilitate gripping by a manipulator robot, reducing storage space requirements and minimizing bottlenecks in the drug delivery process, while accommodating a large number of diverse box references.

Implementation Method 1

a motor system allowing a translation of boxes, said motor system being configured to drive the boxes in a forward direction along a longitudinal direction of the faces, and comprising a means for applying a moment of force to the box configured to tend to tilt the box along an axis perpendicular to the second face and to the longitudinal direction

Methodology Applied
Scientific EffectMoment of force: Torque

Data Source

PatentEP3450028B1Device and method for sorting boxes
Publication Date: 2021.06.09 PHARMACIE AUTOMATISME
  • EP3450028B1 patent drawingFigure 1~2
  • EP3450028B1 patent drawingFigure 3
  • EP3450028B1 patent drawingFigure 4

AI summary

The invention relates to a box sorting device (4) comprising a box receiving surface including a first and a second face (11, 12) forming a non-zero angle between them, a motor system allowing a translation of boxes, said motor system being configured to drive the boxes in a forward direction along a longitudinal direction of the faces (11, 12), characterized in that it includes a means for applying a moment of force to the box configured to tend to tilt the box along an axis perpendicular to the second face (12) and to the longitudinal direction, said motor system including a first support surface of a first portion of box, movable in the forward direction along the longitudinal direction;the first support surface comprising at least a first movable strip (10) along the longitudinal direction and carried by the first panel (11) and at least a second movable strip (8) along the longitudinal direction and carried by the second panel (12), a second support surface of a second portion of the box, at least partially movable along the longitudinal direction, carried by the second panel, and wherein the first and second support surfaces have a velocity differential along the longitudinal direction configured to apply the torque to the box. The field of the invention relates to the sorting of medicine boxes.