Cutting Machine Log Feed Channels for Gravity Trim Discharge
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Solution Overview
Problem
Existing cutting machines for paper rolls face complexity and potential jamming issues due to the intricate setup required for removing trims and final rolls, which complicates the machine's construction and operation.
Innovation Solution
The cutting machine features improved log feed channels with misaligned chains and pushers, allowing simultaneous discharge of head and end trims, and a synchronized conveyor system with a movable opening for trim removal, simplifying the machine's structure and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex devices with motorization means and movable conveyor planes are used for trim removal, then trim removal function is achieved, but machine construction complexity increases
Solution Approach 1:
The patent extracts the trim removal function from the complex synchronized conveyor system and relocates it to the feed channels themselves. By providing openings in the channel walls at the discharge end, trims are allowed to fall out by gravity during the natural feeding cycle, eliminating the need for separate motorized trim removal devices while maintaining reliable trim removal function
Solution Approach 2:
The feed channels are designed to automatically handle trim removal through their own structure. The openings in the channel walls allow trims to self-discharge by gravity during the pusher cycle, without requiring external motorization or synchronized movable conveyor planes, thus simplifying the overall machine construction
2Ease of operation
If synchronized movable conveyor planes are used for roll transportation, then roll transport function is achieved, but operation complexity and jamming risk increase
Solution Approach 1:
The patent segments the conveyor function into separate stationary conveyor planes positioned at different locations. These planes operate independently without requiring synchronization, with each plane handling specific sections of roll transport. This eliminates the complexity of synchronized movable conveyor planes while maintaining effective roll transportation
Solution Approach 2:
Instead of using movable conveyor planes that move in synchronization with the feeding cycle, the patent employs stationary conveyor planes that remain fixed. The inversion of the movable to stationary approach simplifies the mechanism while achieving the same transport function through proper positioning and gravity assistance
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 solution enhances the reliability and functionality of the cutting machine by reducing complexity and costs while ensuring efficient separation of final rolls and trims, minimizing the risk of jamming.
Implementation Method 1
exiting the cutting machine channels, there is an opening through which the trims fall by gravity
Data Source
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AI summary
A cutting machine with improved log feed channels comprises a plurality of feed channels (20) of logs (11), a blade assembly (40) for cutting logs (11), and a discharge assembly (50) of final rolls (12) and head and end trims (13), wherein every feed channel (20) comprises a clamp (21) and a plurality of pushers (22), chain-moved, for feeding the logs (11) in the clamp (21), wherein every feed channel (20) comprises a pair of chains (26) and every pusher (22) is jointly connected to both the chains of the pair of chains (26), wherein every chain of the pair of chains (26) has a closed-loop extension defined by four pinions (28), describing an upper feed branch (126A), a descent branch (126B), a lower return branch (126C) and an ascent branch (126D) of the pusher (22).