Single Web Path Sheet Folding Machine with Distribution Mechanism
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Solution Overview
Problem
Current paper folding and stacking machines are inflexible, requiring separate paper web supply paths and being unsuitable for producing both single-fold and multi-fold products, leading to increased encumbrance, cost, and limited product variability.
Innovation Solution
A sheet folding and stacking machine design that uses a single paper web path, featuring a cutting section with alternative sheet distribution and speed deceleration rollers to produce both single-fold and multi-fold configurations, allowing for adjustable sheet length and panel configurations without changing the machine's core components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two different paper web supply paths are used for single-fold machines, then the sheets can be fed in alternated way to folding rollers, but the machine encumbrance increases significantly
Solution Approach 1:
The patent combines two separate paper web supply paths into a single shared supply path. One paper web is fed to a first cutting section and simultaneously fed to a second cutting section, eliminating the need for two separate unwinding rollers, embossing rollers, and deflecting rollers. This merging reduces machine encumbrance while maintaining the capability to feed sheets in an alternated way to folding rollers through the distribution mechanism.
Solution Approach 2:
The single paper web supply path is designed to serve multiple functions by distributing the web to different cutting sections. The distribution mechanism can selectively direct sheets to either the first or second cutting section, enabling the system to produce both single-fold and multi-fold products from a single web source, thereby reducing overall machine size while maintaining operational flexibility.
2Productivity
If two paper web supply paths are used, then alternating sheet feeding is achieved, but the cost of monitoring and junction management doubles
Solution Approach 1:
The patent merges the monitoring and junction management functions into a single distribution mechanism located at the common web supply point. Instead of monitoring two separate paths and managing two independent junctions, the system uses one distribution mechanism to control sheet flow to different cutting sections, halving the complexity of monitoring and junction management while maintaining alternating sheet feeding capability.
3Area of stationary object
If a single paper web path is used with alternative distribution, then machine encumbrance is reduced, but the ability to produce both single-fold and multi-fold products must be maintained
Solution Approach 1:
The distribution mechanism is designed with universal functionality to direct sheets to different cutting sections based on the desired product configuration. By controlling which cutting section receives sheets from the common web supply, the system can produce both single-fold products (using one cutting section) and multi-fold products (using the other cutting section), maintaining adaptability while reducing machine encumbrance through the shared web path.
Solution Approach 2:
The distribution mechanism incorporates dynamic control capabilities, allowing real-time adjustment of sheet distribution between the first and second cutting sections. This dynamic switching enables the system to adapt between different product configurations (single-fold vs. multi-fold) without requiring separate fixed paths, maintaining versatility while using a compact single web supply structure.
Data Source
AI summary
A folding and stacking machine of a web of paper has first and second feed lines. The machine also has a folding section with folding rollers having a linear folding speed, VP. The folding rollers are adapted to receive a plurality of sheets of length L that can overlap each other for a fraction Y of their length L and to fold them into a plurality of panels P. The machine also has rollers adapted to feed at the folding speed VP the series of cut sheets but not yet folded towards the folding rollers. The rollers are located at the confluence of the two sheet feeding lines. Upstream of the first and feed lines a single cutting section is provided to cut a web of paper that proceeds along a direction of movement at a speed V(1).