Dividing Baffle for Cigarette Filter Tow Dust Control
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Solution Overview
Problem
Conventional cigarette filter manufacturing machines face challenges in repositioning and maintaining the continuous web of filter material due to the need to separate the blower unit and chemical treatment unit, which results in inaccessible components and risk of material breakage.
Innovation Solution
A machine design with a containing structure housing a blower unit and chemical treatment unit, featuring an active dividing baffle with slots to prevent dust entry and a guard door that allows for partial repositioning and easy inspection, enabling the units to communicate and be accessed for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a dividing baffle is used to separate the blower unit and chemical treatment unit, then dust particles are prevented from entering the chemical treatment unit, but the continuous web cannot be repositioned and inspection/maintenance becomes difficult
Solution Approach 1:
The dividing baffle is segmented into a fixed lower portion and a movable upper portion that can be raised or lowered. This allows the baffle to function as a separator during normal operation while permitting web repositioning and inspection when the upper portion is raised, thus resolving the contradiction between dust prevention and operational accessibility
Solution Approach 2:
The upper portion of the dividing baffle is made dynamically movable between a closed position (for dust separation) and an open position (for web access and maintenance). This dynamic capability allows the system to adapt between operational modes, eliminating the need for complete baffle removal while maintaining both dust protection and accessibility requirements
2Device complexity
If the blower unit and chemical treatment unit are housed in a common structure, then the web can pass between units, but dust particles shed during blowing operation are carried into the chemical treatment unit forming fluff balls
Solution Approach 1:
The common housing structure is segmented by introducing a dividing baffle that partitions the interior space into a blower unit section and a chemical treatment unit section. This segmentation prevents dust particles generated in the blower section from entering the chemical treatment section, thereby preventing fluff ball formation while maintaining the space-efficient common housing structure
Solution Approach 2:
The dividing baffle acts as an intermediary barrier between the blower unit and chemical treatment unit. It selectively blocks the passage of dust particles while allowing the continuous web to pass through designated slots, thus mediating between the need for a common structure and the need to prevent contamination
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
Enables the repositioning of the continuous web and facilitates inspections and maintenance without breaking the material, ensuring consistent plasticity and operational efficiency.
Implementation Method 1
a blower unit that serves to spread and separate the strands making up the web
Implementation Method 2
an active dividing baffle with slots to prevent dust entry
Implementation Method 3
the continuous web is caused to pass through a chemical treatment unit, by which the filter material will be impregnated with substances designed to give it a required plasticity
Data Source
Figure 1
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Figure 3
AI summary
A cigarette filter maker is equipped with at least one blower unit (3) serving to spread the fibres in a continuous web (100) of filter tow, at least one chemical treatment unit (4) by which the fibres of the web (100) are impregnated with an additive such as a plasticizer, and a dividing baffle (8) positioned between the blower unit (3) and the chemical treatment unit (4). The baffle (8) presents a slot (9) affording a passage to the continuous web (100), and is capable of movement between an operating position in which the two units (3, 4) are partitioned one from another with the web (100) engaged in the slot (9), and a plurality of non-operating positions in which the units (3, 4) are in communication one with another and the web (100) is released from the slot (9).