Bag Wrapper Packaging Machine for Alternating Stack Loading

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Solution Overview

Problem

Existing packaging machines for bag wrappers face challenges such as complex setup, irregular stacking, disorganized placement, and high costs, making it difficult to efficiently package and transport stacks of bag wrappers in boxes.

Innovation Solution

A packaging machine with handling means and support bases that ensure controlled stacking and placement of bag wrappers, using alternating 180° rotation and controlled insertion into packages, minimizing free falls and ensuring uniform height.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If bag wrappers are stacked in a vertical column with bottoms facing up, then the stack has uniform height and is stable, but the irregular shape makes it difficult to store and transport with other stacks

Engineering Contradiction:
Improvestack stabilityVSAvoidstorage adaptability
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent applies asymmetry by alternating the orientation of bag wrappers in successive layers. Odd layers have bottoms facing up while even layers have openings facing up, creating a staggered asymmetric pattern. This asymmetric stacking allows the stack to adapt to rectangular storage spaces and fit into boxes more efficiently while maintaining stability through the interlocking arrangement.

Inventive Principle:
Principle #4Asymmetry

2Extent of automation

If a conveyor belt system is used to transport and rotate bag wrapper groups, then alternating 180° rotation can be achieved, but the machine becomes very bulky and difficult to install

Engineering Contradiction:
Improveautomatic stackingVSAvoidmachine complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates the complex conveyor belt system from the stacking machine. Instead of using a conveyor belt to transport and rotate bag wrapper groups, the invention uses a simpler mechanical platform that directly receives and positions individual bag wrappers or small groups, achieving automatic alternating stacking without the bulky conveyor infrastructure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Rather than transporting complete groups of bag wrappers on a conveyor belt and rotating the entire group, the invention inverts the approach by positioning individual wrappers or small groups directly onto the stacking platform in the correct alternating orientation, eliminating the need for group rotation mechanisms.

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

3Manufacturing precision

If mobile shelves are used to lower bag wrapper groups, then controlled stacking can be achieved, but the shelves must alternate between support and release positions requiring complex movement mechanisms

Engineering Contradiction:
Improvestacking precisionVSAvoidmechanism complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent extracts and removes the complex mobile shelf system with alternating support and release positions. Instead, it uses a fixed or simplified platform that directly receives bag wrappers in their final stacked positions, eliminating the need for shelves to move between multiple support and release configurations.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP4671141A2Packaging machine for packaging bag wrappers
Publication Date: 2025.12.31 SITEC SRL
  • EP4671141A2 patent drawingFigure 1
  • EP4671141A2 patent drawingFigure 2
  • EP4671141A2 patent drawingFigure 3

AI summary

Packaging machine for packaging bag wrappers, comprising a support frame (2), defining an inlet section (3) for at least one group (G) of bag wrappers and an outlet section (4) for a package (C) containing a plurality of groups (G) of bag wrappers; handling means (5), configured to move said at least one group (G) of bag wrappers from said inlet section (3); a support group (6) comprising at least one support base (7) movable along a loading direction (X) intended to be placed across a package (C) between a first opening (C1) and a second opening (C2) opposite to said first opening (C1) and configured to receive said group (G) of bag wrappers from said handling means (5); said support base of said support group (6) being movable along said loading direction (X) between a raised position, in which said support base (7) is configured to be placed in proximity to said first opening (C1) of said package (C) and a lowered position, wherein it is configured to be placed in proximity to said second opening (C2) of said package (C), to support a plurality of said groups (G) of bag wrappers stacked together inside said package (C) and thus create said package of bag wrappers.