Carding Machine Air Duct for Fiber Accumulation Control
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Solution Overview
Problem
Existing carding machines experience unwanted fiber accumulations and material compaction due to uneven airflows, particularly when processing fiber blends with varying lengths, leading to sliver breakage and reduced machine productivity.
Innovation Solution
An air duct with an inclined guide surface and suction funnel is integrated between the web take-off and compaction hopper, directing airflows away from the fiber sliver path and guiding entrained fibers into the duct, preventing fiber accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If an extraction system is used to create airflow in the gap between the fleece guide element and compaction hopper, then air flow is generated for fiber transport, but fiber accumulation occurs in areas not exposed to airflow causing material compaction
Solution Approach 1:
The air duct is arranged substantially perpendicular to the fiber sliver transport direction, creating a three-dimensional airflow pattern that complements the horizontal extraction airflow. This vertical dimension ensures complete coverage of the take-off area, preventing fiber accumulation in previously stagnant zones.
Solution Approach 2:
The airflow system is divided into two independent components: horizontal extraction airflow for general fiber transport and vertical duct airflow for targeted area coverage. This segmentation allows each airflow to be optimized for its specific function without interfering with the other, eliminating dead zones where fiber accumulation occurs.
2Ease of operation
If gaps are arranged between cross-belt take-off and web guide element for airflow passage, then fiber transport is enabled, but disrupted airflow prevents cleaning effect and causes fiber deposition
Solution Approach 1:
The air duct acts as an intermediary airflow channel that supplements the extraction system. It introduces additional airflow that penetrates through the gaps, maintaining both the transport function and the cleaning effect by ensuring continuous air movement through previously stagnant areas.
3Device complexity
If short fibers are not removed during carding, then fiber blend processing is simplified, but fiber lumps accumulate and cause sliver breakage
Solution Approach 1:
The air duct converts the potentially harmful concentrated airflow (which could cause fiber accumulation) into a beneficial cleaning mechanism. By positioning the duct to create vertical airflow through the take-off area, short fibers and fiber lumps are continuously removed from the fiber sliver path, preventing sliver breakage while maintaining process simplicity.
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
The solution effectively separates airflows, preventing fiber sticking and sliver tearing, enhancing machine operation efficiency and reducing material accumulation.
Implementation Method 1
a device which is designed to guide the air flow in the air space of the web take-off into the upper carding space and at the same time to guide the air flowing through the sliver into the air duct
Data Source
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AI summary
The invention relates to a carding machine (K) with an inlet side for fiber flakes, wherein the carding machine is designed to feed the fiber flakes to a rotating drum (4) by means of rollers, wherein the fiber flakes are broken down, aligned and cleaned between fixed carding elements and circulating cover bars (14) and the drum down to the individual fiber, and the resulting fiber sliver can be transferred from the drum (4) to a receiver (5), to which a device for converting the fiber sliver into a fiber ribbon is arranged, followed by a compressor funnel (10) with a pair of take-off rollers (11, 12) for depositing the fiber ribbon in a can (15).The invention is characterized in that an air channel (20) with inlet and outlet openings (20a, 20b) for guiding the fiber ribbon in the transport direction is arranged between the device for converting (17) the fiber fleece into a fiber ribbon and the compressor funnel (10), wherein the air channel extends essentially vertically to the transport direction of the fiber ribbon and has on its upper side a device (25) which is designed to direct the airflow in the air space of the fleece take-off (18) into the upper carding chamber and simultaneously guide the air flowing through the fiber ribbon into the air channel (20).