Blank Separating Device With Matched Relief Modules
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Solution Overview
Problem
Current sheet processing machines, particularly flat-bed die-cutters, are limited in speed due to discontinuous movement processes, which cause stress on the die-cut sheets and restrict processing speeds to around 10,000 sheets per hour, while rotary die-cutters achieve higher speeds but with complex mechanisms.
Innovation Solution
A blank separating device with a lower blank separating module and an upper blank separating module, where the lower module's relief is matched to the upper module's, allowing for flexible force application and enabling shear movement between connected blanks, facilitating efficient separation of narrow crosspieces and connected blanks without additional processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If flat-bed die-cutting is used, then manufacturing precision is maintained, but productivity is limited to around 10,000 sheets per hour
Solution Approach 1:
The blank separating device is divided into multiple functional modules: a lower blank separating module with a first relief surface and an upper blank separating module with a second relief surface. This segmentation allows independent optimization of each module's function - the lower module maintains sheet stability while the upper module performs precise separation, thereby achieving high productivity without compromising manufacturing precision.
Solution Approach 2:
The invention introduces a vertical dimension to the separation process by employing multiple relief surfaces at different heights. The first relief surface is positioned below the sheet while the second relief surface is positioned above the sheet, creating a three-dimensional separation mechanism that enables continuous processing at high speed while maintaining precision through controlled vertical movement and positioning.
2Productivity
If rotary die-cutting is used, then productivity increases, but device complexity increases
Solution Approach 1:
The invention extracts the essential separation function from the complex rotary die-cutting mechanism and implements it through a simplified blank separating device with two modular relief surfaces. By taking out only the necessary separation capability and eliminating the complex rotary mechanism, the system achieves high productivity through the separated blank processing while maintaining low device complexity.
Solution Approach 2:
The blank separating device acts as an intermediary between the die-cutting process and the final blank output. Instead of integrating separation into the complex rotary die-cutting mechanism, the invention uses a separate, simple blank separating device that receives sheets from the die-cutting process and performs separation through its two relief surfaces, thereby decoupling the functions and reducing overall system complexity.
3Manufacturing precision
If discontinuous movement process is used, then manufacturing precision is maintained, but productivity is limited
Solution Approach 1:
The blank separating device performs separation actions in advance during the continuous movement of sheets through the system. By preparing the separation process beforehand with the two relief surfaces positioned and ready, the system can maintain continuous high-speed processing without the need for discontinuous stopping and starting, thereby improving productivity while preserving manufacturing precision through pre-positioned separation elements.
Data Source
AI summary
A blank separating device includes at least one upper blank separating module, the at least one upper blank separating module having a first relief, the first relief comprising at least three separating elements and/or contact elements, each including an operative surface and/or contact surface. The at least three operative surfaces and/or contact surfaces are individually arrangeable to at least three different distances in a vertical direction with respect to a carrier plate within which the at least three separating elements and/or contact elements are mounted. The blank separating device further includes at least one lower blank separating module that has a second relief comprising a plurality of supporting elements. The second relief matches, at least in complimentary vertical positioning, the first relief of the at least one upper blank separating module.