Drum Arrangement for Tobacco Filter Rod Alignment
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Solution Overview
Problem
Existing conveyor drum systems in the tobacco processing industry face challenges in reliably conveying filter pieces of different lengths during the transverse axial conveyance, requiring increased process reliability while maintaining low design effort.
Innovation Solution
A drum arrangement featuring two conveyor drums with swash plates on both sides, allowing for longitudinal axial displacement of rod-shaped articles of different lengths in opposite directions, with adjustable link guides and pin bodies to align and cut the articles accurately, utilizing a cutting device on one drum for precise alignment and cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single conveyor drum with receiving troughs is used for transverse axial conveyance, then the device complexity is low, but the reliability of conveying filter pieces of different lengths is insufficient
Solution Approach 1:
The conveyor drum is divided into two independent conveyor drums, each equipped with its own wobble plate mechanism. This segmentation allows each drum to independently handle different types of filter pieces (different lengths), thereby improving reliability without requiring a single complex system to manage all variations
Solution Approach 2:
Each conveyor drum is designed with universal functionality to handle both types of filter pieces through the wobble plate mechanism. The wobble plates can displace articles in opposite directions, making the system adaptable to different filter piece lengths while maintaining a relatively simple overall structure
2Manufacturing precision
If wobble plates are added to displace rod-shaped articles in opposite directions, then the manufacturing precision of article alignment is improved, but the device complexity increases
Solution Approach 1:
The wobble plate mechanism combines multiple functions into a single component: it provides longitudinal displacement, lateral displacement, and alignment of filter pieces simultaneously. By merging these functions into the wobble plate mechanism rather than using separate mechanisms for each function, the design achieves precise alignment while minimizing the increase in device complexity
Solution Approach 2:
The wobble plate uses a curved or inclined surface geometry to convert rotational motion into the desired longitudinal and lateral displacement of filter pieces. This geometric solution achieves precise positioning through the shape of the component itself rather than through complex control mechanisms
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates inter alia to a drum arrangement (T) for conveying rod-like articles (41, 42) of the tobacco-processing industry in an axially transverse direction, comprising at least one conveyor drum (20). The conveyor drum (20) has a drum body (23) that can rotate about an axis of rotation and has holder recesses (21, 22) for the rod-like articles (41, 42), which recesses are arranged one after the other in the circumferential direction. At the respective end faces of the drum body (23) a first wobble plate (25) and a second wobble plate (26) are provided for moving the rod-like articles inside the holder recesses (21, 22) in the axially longitudinal direction. The first wobble plate (25) is designed to move rod-like articles of a first type (41) in the respective holder recesses (21) towards the second wobble plate (26) along a first direction of movement, and the second wobble plate (26) is designed to move rod-like articles of a second type (42) in the respective holder recesses (22) towards the first wobble plate (25) along a second direction of movement, and the first direction of movement of the rod-like articles of the first type (41) is opposite the second direction of movement of the rod-like articles of the second type (42).