Feeding Unit Carrier Segmentation for Semi-Finished Pack Synchronization

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing feeding units for semi-finished pillow packs in packaging machines face challenges in synchronization with folding units, component lifespan, flexibility, and overall reliability, particularly due to forward bouncing of packs during high-speed operation.

Innovation Solution

The feeding unit incorporates a pair of carrier members, a leading carrier to stop and a trailing carrier to push the packs, along with a braking device using convergent rail members to slow down packs, ensuring precise synchronization and minimizing forward bouncing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single carrier member is used to push packs at high speed, then productivity is improved, but forward bouncing occurs causing synchronization issues with the folding unit

Engineering Contradiction:

Improvepack feeding speedVSAvoidsynchronization with folding unit

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The single carrier member is divided into two separate carrier members: a leading carrier (10a) that stops the pack and a trailing carrier (10b) that pushes it. This segmentation allows independent control of stopping and pushing functions, eliminating the forward bouncing issue that occurs with single-carrier high-speed operation while maintaining synchronization reliability with the folding unit.

Inventive Principle:

Principle #1Segmentation

2Reliability

If braking force is increased to reduce forward bouncing, then synchronization is improved, but wear on braking components increases

Engineering Contradiction:

Improvesynchronization with folding unitVSAvoidbraking device lifespan

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The braking function is extracted from the main carrier members and implemented as a separate, dedicated braking device (15). This allows the braking operation to be optimized independently - the braking device can apply sufficient force to eliminate forward bouncing and ensure synchronization, while being designed specifically for this purpose rather than being part of the push-carrier mechanism.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The braking device is designed as a simple, easily replaceable component that can withstand high wear from frequent braking operations. By making the braking mechanism separate and relatively simple in construction, it can be maintained or replaced more easily than integrated carrier members, effectively managing the trade-off between braking force and component lifespan.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Reliability

If carrier members are designed for precise pack control, then synchronization is improved, but device complexity increases

Engineering Contradiction:

Improvesynchronization with folding unitVSAvoidfeeding unit structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

By segmenting the carrier function into leading (10a) and trailing (10b) members with distinct roles, the system achieves precise pack control through simple, well-defined actions rather than complex mechanisms. The leading carrier's stopping function and trailing carrier's pushing function are straightforward operations that together provide the necessary precision for synchronization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The braking device (15) acts as an intermediary element that mediates between the carrier members and the pack during the braking phase. This separate mediator component handles the complex deceleration requirement, allowing the carrier members themselves to remain relatively simple in design while still achieving precise synchronization through their coordinated action with the braking device.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This configuration enhances synchronization with the folding unit, reduces wear on components, and improves the overall reliability and flexibility of the feeding unit, while minimizing forward bouncing and ensuring stable pack delivery.

Implementation Method 1

a braking device (15) configured to cooperate in contact with packs (2) for slowing packs (2) down along a braking path (Q)

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentEP4506268A1Feeding unit for feeding semi-finished packs to a folding unit

Publication Date: 2025.02.12 TETRA LAVAL HOLDINGS & FINANCE SA

Figure 1
Figure 2
Figure 3

AI summary

There is described a feeding unit (7) for feeding semifinished sealed packs (2) containing a pourable product to a folding unit (6) configured to fold the packs (2) so as to obtain folded packages (2a), the feeding unit (7) comprises: a conveyor device (8) having an input station (I) for receiving the packs (2) and an output station (O) for releasing the packs (2) to the folding unit (6); a plurality of carrier members (10) mounted on the conveyor device (8) for being cyclically carried through the input station (I) and output station (O), the carrier members (10) being configured to cooperate in contact with the packs (2) for sequentially advancing the packs (2) from the input station (I) to the output station (O); the plurality of carrier members (10) comprises pairs (10a, 10b) of carrier members (10), each pair (10a, 10b) of carrier members (10) being configured to interact with at least one respective pack (2) at a time for receiving such pack (2) at the input station (I) and for advancing such pack (2) towards the output station (O).