Rotary Embossing Tools for Braille Printing on Cardboard
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Solution Overview
Problem
Current Braille printing methods on cardboard packaging boxes are inefficient due to the need for lengthy tool adjustments in platen presses, difficulty in separating embossed blanks, and limitations in positioning Braille messages near edges or creases, which reduces productivity and legibility.
Innovation Solution
A rotary embossing tool integrated into a folder-gluer allows for Braille printing on cardboard blanks without the need for embossing tools in the platen press, enabling easier blank separation and more flexible message placement, while maintaining productivity by allowing assembly and adjustment during the converting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If embossing tools are mounted on a platen press for Braille printing, then Braille characters can be printed on cardboard blanks, but the assembly and adjustment of tools requires long time, reducing productivity
Solution Approach 1:
The invention extracts the embossing operation from the platen press and relocates it to the folder-gluer. The platen press is used only for cutting and creasing, while the folder-gluer performs the embossing of Braille characters. This separation eliminates the need for tool assembly and adjustment on the platen press, thereby maintaining high productivity while ensuring printing quality.
2Productivity
If embossed blanks are fed into a folder-gluer from a stack, then continuous processing is enabled, but protrusions nest into each other making separation difficult and crushing the Braille messages
Solution Approach 1:
The invention performs preliminary embossing of Braille characters directly on the cardboard blanks during the cutting and creasing operations in the platen press, before the blanks are stacked and fed into the folder-gluer. This preliminary action ensures that the Braille characters are already formed and protected, preventing nesting and crushing issues during subsequent handling and feeding processes.
3Adaptability or versatility
If cutting, creasing and embossing tools are held on the same platen by tool supports, then integrated processing is achieved, but the space requirement limits the approaching of tools to edges or creases
Solution Approach 1:
The invention segments the processing operations into two distinct stages: the platen press handles cutting and creasing operations, while the folder-gluer handles embossing operations. This segmentation removes the spatial constraints imposed by tool supports on the platen, allowing Braille messages to be positioned anywhere on the blank, including near edges and creases, without interference from other tools.
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 solution enhances global productivity by reducing assembly time, improving blank separation, and increasing the legibility of Braille messages by allowing printing near edges or creases, thus optimizing the Braille printing process.
Implementation Method 1
The Braille printing process consists of pressing or embossing a surface of the box to reveal points in relief (or protrusions) allowing tactile reading of the messages.
Data Source
AI summary
Device for printing Braille characters on cardboard blanks travelling in a folder-gluer along a substantially planar path, the device comprising rotary embossing tools carried by two respective parallel shafts rotatably mounted above and below of the plane of said path and operable for printing Braille characters on their blanks during their run through the folder-gluer. The tools are supported on shafts and the tools are adjustable axially and angularly with respect to each other.