Concave Conveyor Track for Damage-Free Packaging Material Handling
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Solution Overview
Problem
Existing packaging stations face challenges in increasing packaging speed while maintaining the quality of dunnage material and ensuring ergonomic working conditions, particularly when using recycled paper, which tends to tear easily, and frequent start-stop operations lead to material damage.
Innovation Solution
A packaging station with a conveyor structure that includes a sheet or mesh conveyor track with a concavely planar sliding support, providing a stable and smooth guidance for the packaging material web, allowing high-speed conveyance and minimizing damage, combined with a deformation device that uses gravity and traction forces for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If packaging speed is increased, then productivity is improved, but material damage increases due to tearing
Solution Approach 1:
The conveyor track is designed with a concave curvature that matches the natural arc of the packaged object. This curved path allows the packaging material to follow a smooth trajectory during high-speed conveyance, eliminating sharp angles and abrupt directional changes that would cause stress concentration and tearing. The concave shape distributes mechanical stresses evenly along the material length, enabling increased packaging speed without compromising material integrity.
Solution Approach 2:
The system dynamically adjusts conveying parameters including speed, acceleration, and track geometry based on material properties and packaging requirements. By optimizing these parameters, the system achieves high productivity while maintaining material integrity through controlled stress application that prevents tearing during the packaging process.
2Device complexity
If conventional conveyor systems are used, then device complexity is reduced, but material damage occurs due to lack of guidance
Solution Approach 1:
The concave conveyor track provides continuous lateral guidance through its curved geometry, naturally steering the packaging material along the correct path without requiring complex mechanical guidance systems. This simple yet effective curved design prevents material deviation and damage while maintaining relatively low device complexity.
Solution Approach 2:
The conveyor track acts as an intermediary element between the packaging material and the packaging station. This intermediate structure provides the necessary guidance and support, enabling damage-free conveying through its concave shape that cradles and directs the material smoothly through the packaging process.
3Ease of operation
If untrained operators operate the system, then ease of operation is improved, but material damage increases
Solution Approach 1:
The concave conveyor track is designed to automatically guide and stabilize the packaging material through its inherent geometric shape. This self-guiding mechanism compensates for operator inexperience by providing passive, consistent guidance that prevents material damage regardless of the operator's skill level, thereby achieving ease of operation without compromising material integrity.
4Productivity
If high conveying forces are applied, then productivity is improved, but material damage occurs due to tearing
Solution Approach 1:
The concave curved track distributes conveying forces evenly along the packaging material by following a smooth arc path. This eliminates stress concentration points that would occur with straight or angular conveyance paths, allowing high conveying forces to be applied at high speeds without exceeding the material's strength limits and causing tearing.
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
The solution enables reliable, damage-free unfolding and feeding of packaging material into the deformation device, even with untrained operators, and reduces conveying resistance, allowing for efficient production of dunnage material without frequent material replenishment.
Implementation Method 1
a conveyor structure (3) which comprises a conveyor track (25) [...] providing a stable and smooth guidance for the packaging material web
Implementation Method 2
a deformation device (5) for converting a web of packaging material (21) drawn from a supply (15) of packaging material web into a dunnage material (39)
Data Source
AI summary
A packaging station comprising a deformation device for converting a web of packaging material drawn from a supply of packaging material web, such as a leporello folded stacked web, into a dunnage material and a conveyor structure for receiving the drawn web of packaging material and for feeding the drawn web of packaging material into the deformation device, wherein the conveyor structure comprises a conveyor track extending from a reception of the conveyor structure to the deformation device and being dimensioned such that, after passing the reception, the web of packaging material is able to bear over its entire surface on the conveyor track in the conveying direction for at least the twofold of the width of the web.