Elastomer Profile Elements Countering Board Tearing
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Solution Overview
Problem
Existing die-cutting devices face challenges in processing materials like very dry corrugated board or thin linerboard, which can lead to tearing due to tensile forces and asymmetrical creasing, resulting in issues such as fishtailing.
Innovation Solution
The device incorporates profile elements made of elastomeric material with a concave recess and specific geometric design to generate a shear force counteracting tensile forces during processing, preventing material damage and improving creasing symmetry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a processing line penetrates the material to complete punching or cutting through, then the material is fully processed, but tensile forces cause tearing of very dry corrugated board or thin linerboard
Solution Approach 1:
The profile element applies a counteracting shear force in the longitudinal direction before and during the punching operation to preemptively counterbalance the tensile forces that would otherwise cause the linerboard to tear, preventing the harmful effect before it occurs
Solution Approach 2:
The profile element acts as an intermediary component between the processing line and the material, transferring and transforming the applied pressure into a beneficial shear force that protects the material from tensile stress-induced tearing
2Manufacturing precision
If pressure is applied during creasing to create folds, then the material is weakened for folding, but asymmetrical creasing occurs leading to fishtailing
Solution Approach 1:
The profile element generates a counteracting shear force that balances the asymmetrical tensile forces during creasing, preventing the material edges from curling or rippling outward to form fishtails
Solution Approach 2:
The elastomeric material of the profile element allows for dynamic adjustment of force distribution parameters during processing, enabling uniform pressure application that produces symmetrical creases without fishtailing
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 effectively reduces material tearing and fishtailing by generating a shear force that counteracts tensile forces, ensuring precise and damage-free processing of materials like corrugated board.
Implementation Method 1
the profile element, in its compressed state, generates a shear force in the direction of the processing line, which counteracts a tensile force generated by the processing line in the processing area
Implementation Method 2
the profile element which extends at least partially in the longitudinal direction along the assigned side flank and which is formed at least partially, preferably completely, from an elastomeric material
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a device for processing, in particular for punching, creasing, embossing and/or perforating, planar processing material, in particular paper, cardboard, corrugated board and/or plastic, with a processing plate (2) from which at least one processing line (3) projects, wherein at least one side flank (4) of the at least one processing line (3), preferably both side flanks (4) of the at least one processing line (3), is assigned at least one profile element (5) which extends at least partially in the longitudinal direction along the assigned side flank (4) and which is formed at least partially, preferably completely, from an elastomer material.According to the invention, the at least one profile element (5) is suitable and designed to rest on and against a top surface of a processing material (7) during operation of the device (1) and, in the compressed state, to generate a shear force (27) in the direction of the processing line (3), which counteracts a tensile force generated by the processing line (3) in the processing area (21).