Improved Log Feed Channels for Independent Trim Discharge
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Solution Overview
Problem
Existing cutting machines for paper rolls production face complexity and potential jamming issues due to the intricate setup required for removing trims and final rolls, with suction and conveyor systems needing precise synchronization.
Innovation Solution
The cutting machine features improved log feed channels with misaligned pushers connected to chains via hinges, allowing simultaneous discharge of head and end trims, and a conveyor plane with a synchronized opening for trim removal, independent of the pusher motorization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex suction means and movable conveyor planes with synchronized movement are used to remove trims and transport final rolls, then the trimming and transportation function is achieved, but the machine construction becomes complex and setup issues with potential jamming occur
Solution Approach 1:
The patent extracts the trimming function from the complex synchronized system by providing a dedicated trimming station with trimming means that actively removes trims at the outlet of feed channels. This separates the trimming operation from the final roll transportation system, eliminating the need for complex suction means and movable conveyor planes with synchronized movement.
Solution Approach 2:
The patent segments the discharge system into separate functional zones: a trimming station for active trim removal, a discharge channel for final rolls, and a conveyor for transportation. This segmentation allows each component to operate independently without requiring complex synchronization, simplifying the overall machine construction.
2Productivity
If perfectly synchronized movement between conveyor planes and conveyors is implemented for trim removal and roll feeding, then the transportation function is achieved, but setup complexity and potential jamming risks increase
Solution Approach 1:
The patent employs a conveyor with adjustable speed that can be independently controlled from the pusher chains. This dynamic control allows the conveyor speed to be optimized for efficient roll transportation without requiring perfect synchronization with the pusher chains, thereby maintaining productivity while reducing setup complexity and jamming risks.
Solution Approach 2:
The patent introduces an intermediate discharge channel that receives final rolls from the feed channels and transfers them to the conveyor. This intermediary component buffers the interface between the pusher chains and the conveyor, allowing independent operation of each system without requiring precise synchronization, thus simplifying setup while maintaining efficient transportation.
3Productivity
If multiple parallel feed channels with chain-moved pushers are used to feed logs step by step, then the log feeding function is achieved, but the machine structure becomes complex
Solution Approach 1:
The patent designs the feed channels with a standardized modular structure where each channel uses identical pusher chains and components. This universal design allows multiple parallel channels to operate independently with the same configuration, increasing log processing capacity while actually reducing overall complexity through standardization and ease of maintenance.
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 design simplifies the machine structure, enhances reliability, and reduces costs by ensuring efficient and synchronized removal of trims and final rolls without complex setups or synchronization issues.
Implementation Method 1
Every pusher is jointly connected to both the chains of the pair of chains respectively by at least one hinge comprising a pivot
Implementation Method 2
there is an opening through which the trims fall by gravity
Data Source
AI summary
A cutting machine with improved log feed channels includes a plurality of feed channels of logs, a blade assembly for cutting logs, and a discharge assembly of final rolls and head and end trims, wherein every feed channel includes a clamp and a plurality of pushers, chain-moved, for feeding the logs in the clamp, wherein every feed channel includes a pair of chains and every pusher is jointly connected to both the chains of the pair of chains, wherein every chain of the pair of chains has a closed-loop extension defined by four pinions, describing an upper feed branch, a descent branch, a lower return branch and an ascent branch of the pusher.