Interleaver System Web Tension Control for High-Speed Slicing
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Solution Overview
Problem
Existing food slicing machines face challenges in reliably interleaving sheets with sliced products, especially during high-speed operations, and require a more efficient arrangement for slicing multiple loaves.
Innovation Solution
A sheet interleaving system that includes a tension control station, a drawing station, and a feed station, utilizing a feedback loop system with a dancer roller and frictional braking mechanism to precisely control web material tension and dispensing, allowing for flexible interleaving patterns and efficient use of space when slicing multiple loaves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed slicing operations are performed, then productivity is improved, but the reliability of sheet interleaving deteriorates
Solution Approach 1:
The patent implements a feedback control system using a dancer roller that responds to web tension variations in real-time. The dancer roller's position changes based on web tension, and this position is used to control the reel speed, creating a closed-loop feedback mechanism that maintains reliable sheet interleaving even during high-speed slicing operations
Solution Approach 2:
The system dynamically adjusts the reel speed based on real-time web tension conditions. The dancer roller provides dynamic response to tension changes, allowing the system to adapt to varying slicing speeds and maintain proper web tension for reliable sheet placement throughout the high-speed operation
2Reliability
If web tension is increased to improve sheet coupling, then sheet placement reliability is improved, but the risk of web breakage and machine damage increases
Solution Approach 1:
The feedback control system continuously monitors web tension through the dancer roller position and automatically adjusts reel speed to maintain optimal tension levels. This prevents both excessive tension (which could cause breakage) and insufficient tension (which would poor sheet coupling), achieving reliable sheet placement without increasing breakage risk
Solution Approach 2:
The system dynamically changes the web tension parameter by adjusting reel speed based on dancer roller position. This allows the tension to be maintained within an optimal range that ensures reliable sheet coupling while avoiding levels that would cause web breakage or damage to machine components
3Reliability
If a feedback loop system with dancer roller is implemented to control web tension, then sheet placement reliability is improved, but device complexity increases
Solution Approach 1:
The dancer roller feedback system provides precise web tension control through a relatively simple mechanical feedback mechanism. The dancer roller's natural response to tension changes creates an automatic control system that achieves high precision without requiring complex electronic sensors or control algorithms
Solution Approach 2:
The dancer roller acts as an intermediary element that translates web tension variations into positional changes, which then control the reel speed. This mechanical intermediary provides precise control while keeping the overall system relatively simple, avoiding the need for complex electronic tension sensing and control systems
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
The system ensures precise and reliable interleaving of sheets with sliced products, improving the efficiency and reliability of high-speed slicing operations and optimizing space usage for multi-loaf slicing machines.
Implementation Method 1
a supply of web material (301) arranged to dispense web material (312) to the tension control station (610). The supply of web material comprises a braking mechanism (309)
Data Source
AI summary
A sheet interleaver is provided for a slicing machine that includes a slicing plane for slicing an elongated food product and a sheet of web material beneath the elongated product. The interleaver includes a supply of web material, a drawing station, and a feed station. A tensioning station is disposed between the supply of web material and the drawing station to maintain the tension of the web material at a pre-determined tension. A web accumulation station is between the drawing station and the feed station to provide a slackened length of web material within an acceptable range of slack between the drawing station and the feed station. The supply of web material is disposed on a spool which rotates about a cylindrical shaft. The cylindrical shaft has a braking mechanism which protrudes from the shaft to generate a frictional force against the spool.