Variable Width Garniture Channel for Tobacco Rod Stress Reduction
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Solution Overview
Problem
Tobacco industry machines face challenges in reducing stress on garniture belts, leading to increased rejection rates of rod-like elements due to inappropriate length, which affects production efficiency and belt durability.
Innovation Solution
The method involves adjusting the resistance of motion on the garniture belt by modifying the positions of guiding bars in the filling material receiving and stabilizing sections, allowing for a variable width of the garniture channel, and using sensors to measure stress and adjust accordingly, thereby reducing tensile stress and motion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the garniture belt is used to transport continuous rod in a constant width channel, then the structure is simple and easy to operate, but the stress on the belt increases leading to higher rejection rates and reduced belt durability
Solution Approach 1:
The garniture channel width is made variable through adjustable guiding bars that can be positioned at different locations. This allows the channel width to be dynamically changed according to the specific section (filling material receiving section with greater width, rod diameter setting section with smaller width, rod stabilizing section with greater width), resolving the contradiction between maintaining simple structure and reducing stress/rejection rates.
2Ease of manufacture
If the garniture channel has constant width, then the device structure is simple, but the stress on garniture belt increases causing more rejections and belt wear
Solution Approach 1:
The guiding bars are designed to be adjustable to different positions, allowing the garniture channel width to vary along the belt path. This dynamic width adjustment reduces stress on the garniture belt in critical sections while maintaining manufacturability through a relatively simple adjustable mechanism.
3Duration of action of stationary object
If the garniture channel width is varied to reduce stress, then belt durability improves, but the device complexity increases due to adjustable guiding bars
Solution Approach 1:
The guiding bars are made adjustable to create variable width sections in the garniture channel, which reduces stress on the belt and extends its service life. The adjustment mechanism, while adding some complexity, uses relatively simple movable guiding bars that can be positioned at different locations to achieve the desired width variation.
Solution Approach 2:
The width parameter of the garniture channel is changed in different sections (greater in filling material receiving section, smaller in rod diameter setting section, greater in rod stabilizing section) to optimize belt stress distribution. This parameter variation is achieved through adjustable guiding bars that modify the channel geometry without requiring complete structural redesign.
Data Source
AI summary
A method for reducing stress of a garniture belt in a tobacco industry machine for manufacturing rods from a continuous rod comprising a garniture belt, guiding bars configured for guiding the garniture belt, a filling material receiving section, a rod diameter setting section, and a rod stabilizing section, the method comprising adjusting a resistance of motion of the garniture belt in at least one of the filling material receiving section or the rod stabilizing section by adjusting a width of the garniture channel by changing positions of the guiding bars in the horizontal direction perpendicular to a longitudinal axis of the garniture channel.