Slitter-Scorer Suction Nozzles for Trim Removal
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Solution Overview
Problem
Existing slitter-scorer machines face issues with dimensional errors and trim jamming due to the considerable distance between scoring and cutting tools, leading to inefficiencies and increased costs.
Innovation Solution
A slitter-scorer machine design with two sets of cutting tools and suction nozzles arranged sequentially along the feed path, where each set of suction nozzles is positioned directly adjacent to the respective cutting tools, allowing for efficient trim removal and eliminating the need for auxiliary cutting tools that must move transversely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If suction nozzles are positioned far from cutting tools to receive trims, then trim removal can be achieved, but dimensional errors increase and trim jamming occurs
Solution Approach 1:
The machine is divided into multiple independent cutting and scoring units arranged sequentially along the feed path. Each unit has its own suction nozzles positioned immediately downstream, allowing localized trim removal without requiring long-distance connections between cutting tools and suction nozzles.
Solution Approach 2:
The suction nozzles act as intermediaries positioned between the cutting tools and the trim removal process. By placing suction nozzles directly downstream of each cutting tool set, they mediate the trim removal process at the point of generation, preventing dimensional errors and jamming before they can occur.
2Manufacturing precision
If auxiliary cutting tools are used to cut trims, then trim removal is achieved, but machine costs increase and device complexity increases
Solution Approach 1:
The cutting tools in each unit are designed to perform multiple functions: they cut the corrugated cardboard into longitudinal strips and simultaneously generate the lateral trims that are immediately removed by the associated suction nozzles. This eliminates the need for separate auxiliary cutting tools dedicated solely to trim removal.
Solution Approach 2:
The cutting function and trim generation function are merged into a single cutting tool set within each unit. The same cutting tools that create the longitudinal strips also produce the lateral trims, which are then immediately removed by the integrated suction nozzles, combining multiple functions into one system.
3Productivity
If multiple sets of cutting and scoring tools are arranged far apart, then batch processing efficiency is improved, but dimensional errors increase
Solution Approach 1:
The machine is segmented into multiple independent units, each with its own cutting and scoring tools positioned close together. This segmentation allows parallel processing of different batches while maintaining precise dimensional control within each unit, as the suction nozzles are positioned immediately downstream of each tool set.
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 configuration ensures precise and continuous trim removal, reducing dimensional errors and costs by maintaining the tools' proximity to the cutting unit, enhancing machine efficiency and compactness.
Implementation Method 1
To remove the continuous trims generated by the two lateral cutting tools suction nozzles are generally used, one on each side of the feed path of the corrugated cardboard
Data Source
AI summary
The slitter-scorer machine includes a suction unit for removing trims cut by the cutting blades. The suction unit in turn includes a first pair of suction nozzles associated with a first set of cutting tools, and a second pair of suction nozzles, associated with a second set of cutting tools. The first pair of suction nozzles is adapted to suck trims generated by the first set of cutting tools and the second pair of suction nozzles is adapted to suck trims generated by the second set of cutting tools.