Rigid Window Applicator for Folding Cartons
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Solution Overview
Problem
Existing methods for applying rigid windows to folding cartons are limited by the need for pre-die cutting and separate processing operations, which restrict speed and efficiency, and do not accommodate roll-fed rigid window materials.
Innovation Solution
A system that draws from a roll of rigid window material, integrates die cutting, scoring, and singulation with the application process on a combined machine, using a reconfigured die cylinder and anvil cylinder for continuous operation, and includes a waste removal system and feedback mechanism for alignment, allowing for self-alignment and immediate correction of misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pre-die cutting and separate processing operations are used, then manufacturing precision is maintained, but productivity is reduced and processing time increases
Solution Approach 1:
The patent combines multiple separate operations (die cutting, scoring, singulation, and window application) into a single integrated machine that processes roll-fed rigid window material continuously. This merging eliminates the need for pre-die cutting and separate processing steps, thereby increasing productivity while maintaining precision through coordinated control of all operations in one synchronized system.
Solution Approach 2:
The integrated machine performs die cutting, scoring, and singulation actions preliminarily as the material passes through the system in sequence, rather than requiring all operations to be completed separately beforehand. The scoring and die cutting occur in-line during the feeding process, preparing the window material for immediate application without intermediate handling steps.
2Ease of manufacture
If pre-die cutting equipment is used, then window blanks are properly formed, but device complexity and processing steps increase
Solution Approach 1:
The patent integrates the die cutting mechanism, scoring mechanism, and material feeding system into a single coordinated apparatus that processes roll-fed material. This consolidation reduces the number of separate devices needed while maintaining the capability to properly form window blanks with precise scoring and cutting operations.
Solution Approach 2:
The integrated machine performs multiple functions (feeding roll material, die cutting notches, scoring fold lines, and singulating windows) within a single device. This multi-functionality eliminates the need for separate pre-die cutting equipment and reduces overall system complexity while maintaining manufacturing capability.
3Productivity
If roll-fed rigid window material is used, then productivity and efficiency are improved, but alignment precision and registration accuracy become more difficult to maintain
Solution Approach 1:
The patent incorporates feedback mechanisms that monitor the position and alignment of the roll-fed rigid window material during processing. This feedback system allows for real-time adjustments to maintain precise registration and alignment accuracy despite the continuous feeding process, ensuring that each window is correctly positioned on the carton.
Solution Approach 2:
The system performs preliminary alignment and registration actions as the material is being fed and processed, rather than relying on post-processing adjustment. The scoring and die cutting operations are synchronized with the feeding mechanism to pre-establish correct positioning before the window is applied to the carton.
Data Source
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AI summary
Apparatus and method for affixing rigid transparent Windows to folding cartons draws rigid window web material from a roll and scores and notches the window material in a continuous manner. Notch waste is removed and collected for disposal by the combination of vacuum and an air jet applied at the point of severance. The transparent window material is then provided to an accumulator and then to a stop-and-go adhesive application and material cutting stage, where adhesive is applied to the material which is cut into individual rigid window patches, with the accumulator serving as a buffer between the high speed continuous scoring and notehing stage and the stop-and-go adhesive application and cutting stage. Adhesive-bearing individual window patches are applied to moving folding cartons with registration between the notches and cut lines as well as between the cut window blanks and carton blanks provided by a control system.