Conveyor Speed Compensation for Rod Transfer
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Solution Overview
Problem
The challenge in the manufacturing of smoking articles is to ensure a reliable and safe transfer of rod-shaped articles, such as tobacco rods, from a reservoir to a conveyor belt and subsequently to a receiving conveyor, while maintaining a constant speed to prevent damage or misalignment.
Innovation Solution
A system comprising a reservoir, a conveyor belt with a seat for holding rod-shaped articles, and a speed compensator to maintain constant speed, along with a pusher device for controlled transfer, and an offset conveyor band for secure retention, allows for smooth and continuous transfer of rod-shaped articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conveyor belt is used to transfer rod-shaped articles, then continuous transfer is enabled, but speed variations cause misalignment and potential damage
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the speed of different sections of the conveyor belt. The base conveyor belt operates at a first speed for continuous transfer, while the transfer section operates at a second, slower speed to enable safe transfer of rod-shaped articles. This speed parameter differentiation resolves the contradiction between continuous transfer and transfer safety.
2Reliability
If the conveyor belt speed is reduced for safe transfer, then transfer safety improves, but overall productivity decreases
Solution Approach 1:
The conveyor system is segmented into at least two distinct sections: a base conveyor belt for continuous high-speed transfer and a transfer section for controlled low-speed article handling. This segmentation allows each section to operate at optimal speeds for its specific function, maintaining overall productivity while ensuring safe transfer in the critical transfer zone.
Solution Approach 2:
The system employs dynamic speed control where the transfer section can independently adjust its speed relative to the base conveyor belt. This dynamic adjustment enables the transfer section to slow down for safe article transfer while the base conveyor continues at full speed, resolving the productivity-safety trade-off.
3Productivity
If a reservoir is used to hold multiple rod-shaped articles, then continuous supply is enabled, but precise positioning during transfer becomes difficult
Solution Approach 1:
The reservoir pre-positions rod-shaped articles in a controlled manner before they enter the transfer section. Articles are held in the reservoir with their positions predetermined and aligned, so that when the transfer section operates at reduced speed, precise positioning can be achieved. This preliminary preparation resolves the contradiction between continuous supply and positioning accuracy.
Data Source
Figure 1~2
Figure 3
AI summary
The system for transferring rod-shaped articles comprises a reservoir for holding a plurality of rod-shaped articles and a conveyor band comprising a seat adapted to receive a rod-shaped article from the reservoir. The system further comprises a speed compensator for compensating a speed variation of a portion of the conveyor band such that a speed of another portion of the conveyor band is kept constant. There is also provided an arrangement for retaining rod-shaped articles in a conveyor band. The arrangement comprises a conveyor wheel, wherein the seat is guidable in the conveyor band around the conveyor wheel and comprises an offset conveyor band arranged in parallel and at a distance to the conveyor band along a section of the conveyor band. The distance is adapted such that the offset conveyor band is to contact a rod-shaped article in the seat of the conveyor band along the section of the conveyor band, wherein the section of the conveyor band comprises at least the part of the conveyor band that is being guided around the conveyor wheel.