Blister Machine Storage Station Coupling for Unintended Dispensing

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Solution Overview

Problem

Existing blister machines suffer from unintentional dispensing of small piece goods when storage containers are placed on dispensing stations due to unwanted rotation of the separating device, leading to disruptive and unpredictable dispensing operations.

Innovation Solution

A storage and dispensing station design that includes a storage container with a holding device preventing rotation in a blocking position and allowing rotation in a release position, coupled with a dispensing station featuring a rotary drive and interaction mechanisms to ensure the coupling interaction occurs before the release of the holding device, thereby preventing unwanted dispensing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the storage container is placed on the dispensing station, then the coupling device engages with the rotary drive, but the holding device releases prematurely causing unwanted rotation and unintentional dispensing

Engineering Contradiction:

Improvedispensing operation reliabilityVSAvoidcoupling and holding mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The coupling device is designed to engage with the rotary drive hub before the holding device releases. The coupling interaction occurs first, establishing a secure mechanical connection, and only after this is established does the holding device transition to the release position. This preliminary coupling action ensures that the storage container is firmly attached before any rotation can occur, preventing unintentional dispensing during the placement operation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The coupling device and holding device are positioned and dimensioned such that their interaction surfaces are at the same vertical level (equipotential) when viewed from the front. This geometric arrangement ensures that as the storage container is lowered onto the dispensing station, the coupling device and holding device engage simultaneously or in the correct sequence, preventing premature release that would cause unwanted rotation.

Inventive Principle:

Principle #12Equipotentiality

2Reliability

If the holding device prevents rotation during coupling, then unwanted dispensing is avoided, but the separating device cannot be properly positioned

Engineering Contradiction:

Improveprevention of unintentional dispensingVSAvoidstorage container placement ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The coupling device engages first to establish a secure mechanical connection between the storage container and rotary drive. Only after this coupling is established does the holding device release to allow rotation. This preliminary coupling ensures the container is firmly attached before positioning is needed, making the operation reliable yet easy to perform.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The holding device is segmented into a holding member that prevents rotation and an actuation member that controls the release. This segmentation allows the holding function to be independently controlled from the coupling function, enabling the system to maintain rotation prevention during coupling while allowing rotation after coupling is established, simplifying the overall placement operation.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If the hub is rotatable in de-energized state, then alignment during coupling is facilitated, but unwanted rotation may occur causing dispensing errors

Engineering Contradiction:

Improvehub alignment easeVSAvoiddispensing accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The hub is designed to be rotatable in the de-energized state to facilitate alignment during the coupling process. However, the holding device maintains the blocking position throughout the coupling operation, preventing any rotation of the separating device even though the hub can rotate. This preliminary rotatability aids alignment while the holding device ensures dispensing accuracy is maintained.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The coupling device acts as an intermediary between the hub and the separating device. It transmits the rotational movement from the hub to the separating device only after the holding device has released. This intermediary function allows the hub to be rotatable for alignment purposes while preventing unwanted rotation of the separating device that would cause dispensing errors.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12358672B2Storage and dispensing station for a blister machine

Publication Date: 2025.07.15 BECTON DICKINSON ROWA GERMANY GMBH

AI summary

Storage and dispensing stations for a blister machine for separable small piece goods include a storage container having a housing and a separating device having a coupling device with a lower coupling portion and having a holding device with an actuation member. The storage container is releasably arranged on a dispensing station having a rotary drive having a hub seated on a shaft and having an opening member for interaction with the actuation member. The lower coupling portion, the hub, the actuation member, and the opening member are set relative to one another so that when arranging the storage container on the dispensing station prior to an effective interaction between the actuation members and the opening member, an effective interaction occurs between the lower coupling portion and the hub, and the hub is rotatable in the de-energized state. Methods of operating storage and dispensing stations are also provided.