Cutting Device Transport Synchronization via Independent Drives
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Solution Overview
Problem
Existing three-sided trimming devices experience positional deviations during product transport due to speed differences between the trimming device and subsequent processing equipment, leading to potential jams and disruptions.
Innovation Solution
A device with independent drives for the upper knife bridge and transport system, connected via a control device, and a separate delivery transport device with a servo drive and toothed belt drive train, allowing for controlled and synchronized movement profiles to prevent positional deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the transport system uses friction-based belt pairs for product transport, then the device complexity is reduced, but positional deviations occur due to speed differences with downstream processing units
Solution Approach 1:
The patent applies dynamics by implementing variable speed control for different transport sections. The first transport section (from trimming device to delivery device) operates at a first speed, while the second transport section (from delivery device to downstream processing) operates at a second speed. This dynamic speed adjustment eliminates positional deviations at the interface between trimming and downstream processing, while maintaining simple friction-based belt transport throughout the system.
2Productivity
If the trimming device operates at high speed, then productivity is improved, but positional deviations increase due to speed mismatch with downstream processing
Solution Approach 1:
The system maintains high trimming speeds for productivity while dynamically adjusting transport speeds to match downstream processing requirements. The first transport section can operate at higher speeds corresponding to trimming productivity, while the second transport section adapts its speed to prevent positional deviations during transfer to downstream processing.
Solution Approach 2:
The patent changes the speed parameter across different transport sections. By establishing a speed profile where the first transport section operates at a first speed and the second transport section operates at a second speed, the system accommodates both high productivity requirements and precision positioning needs.
3Device complexity
If a single integrated transport system is used, then device complexity is minimized, but the ability to control speed profiles for different transport sections is reduced
Solution Approach 1:
The transport system is segmented into two distinct transport sections: a first transport section from the trimming device to the delivery device, and a second transport section from the delivery device to downstream processing. Each section can be independently controlled with different speed profiles, providing adaptability while maintaining relative system simplicity.
Data Source
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AI summary
The device has an upper knife beam which is operable in a reciprocation motion. Blades for front edge section and head- and foot sections of a product (40) are attached to the upper knife beam. A drive drives the upper knife beam and a transport unit (34) transports the product through the cutting station. The device also comprises a delivery transport unit (39) in the transport direction (34) of the products downstream the transport unit. The delivery transport unit has an autonomous and independent drive which is connected with the former drive over a control unit. Independent claims are included for a method for controlling transport of products through the cutting stations of the product edge trimming device to a downstream processing device.