Sliding Device Alignment Movable Abutment Sack Damage

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing palletizing devices face issues with uneven force distribution during sack alignment, leading to risks of crushing, pinching, or tearing of sacks due to inhomogeneous layer formations and misalignment.

Innovation Solution

A sliding device with a movable abutment and lateral alignment pushers on both sides, allowing for variable and defined counterforces in both longitudinal and lateral directions, reducing the risk of damage by distributing alignment forces more homogeneously and stabilizing the layer position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a single fixed abutment is used for longitudinal alignment, then alignment function is provided, but force distribution becomes uneven causing sack damage

Engineering Contradiction:
Improvealignment precisionVSAvoidsack damage
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The single fixed abutment is segmented into multiple movable abutments distributed along the sliding direction. These abutments divide the alignment function into multiple contact points, enabling uniform force distribution across the layer while maintaining precise alignment. The segmentation transforms a concentrated force application into distributed force application, eliminating sack damage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fixed abutment is replaced with movable abutments that can adjust their positions independently. This dynamic capability allows each abutment to adapt to local variations in layer formation, maintaining optimal contact force distribution. The movable abutments dynamically respond to layer fluctuations, ensuring uniform force application throughout the alignment process.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If alignment force is applied from a single side, then alignment is achieved, but edge areas of sacks are pinched and torn

Engineering Contradiction:
Improvealignment accuracyVSAvoidedge pinching and tearing
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

Alignment pushers are introduced on both lateral sides of the sliding table to compensate for the asymmetric force application from the single-sided abutment. This creates a balanced symmetric force distribution system where lateral pushers counteract the asymmetric pressure, preventing edge pinching and tearing while maintaining alignment accuracy.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The lateral alignment pushers act as counterbalancing elements that offset the asymmetric forces generated by the single-sided abutment arrangement. By applying compensating forces from both lateral sides, the system neutralizes the harmful asymmetric stress concentrations at sack edges, preventing damage while preserving alignment function.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

3Adaptability or versatility

If inhomogeneous layer fluctuations occur, then natural variation is present, but distance between sacks varies causing uneven force distribution

Engineering Contradiction:
Improvelayer formation flexibilityVSAvoidsack spacing uniformity
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

Movable abutments are employed that can independently adjust their positions to accommodate natural layer fluctuations. This dynamic adaptation maintains uniform sack spacing despite variations in layer formation, as each abutment responds to local conditions. The system preserves formation flexibility while achieving spacing uniformity through active position adjustment.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of abutment position dynamically to compensate for layer fluctuations. By varying the position parameters of multiple abutments according to local layer conditions, the system maintains uniform sack spacing while accommodating natural formation variations. This parameter adjustment ensures consistent force distribution across inhomogeneous layers.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP2939965B1Sliding device for a palletising device with a pusher, a counter guider and two side guides
Publication Date: 2017.06.28 WINDMOELLER & HOELSCHER GMBH
  • EP2939965B1 patent drawingFigure 1
  • EP2939965B1 patent drawingFigure 2
  • EP2939965B1 patent drawingFigure 3

AI summary

The invention relates to a sliding device (110) for a palletizing device for stacking filled bags (200) into a stack of bags, comprising a sliding surface and a sliding table (114) arranged next to the sliding surface, as well as a slider (116) for sliding a layer (230) of bags (200) from the sliding surface onto the sliding table (114), wherein in the sliding direction (SR) of the slider (116) a movable abutment (117) is arranged at the end of the sliding table (114) against which the slider (116) can slide the layer (230) of bags (200) for longitudinal alignment of this layer (230), wherein an alignment pusher (120) is arranged on each of the two sides of the sliding table (114) adjacent to this end for lateral alignment of the layer (230) of bags (200).