E-Cigarette Cartridge Capping With Empty-Cap Detection Control
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Solution Overview
Problem
Existing machines for filling and capping cartridges for electronic cigarettes face challenges in maintaining high production quality due to difficulties in feeding caps, which are small and lightweight, leading to significant wastage and malfunctions.
Innovation Solution
A machine with a control unit that monitors cap availability on a tray, preventing operations at stations when empty spots are detected, and an application device that aligns and applies caps to cartridges, ensuring accurate and efficient capping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cap feeding mechanisms are used, then the machine structure remains simple, but cap feeding reliability deteriorates due to small cap size and light weight
Solution Approach 1:
The patent replaces conventional mechanical cap feeding mechanisms with a suction-based system. A suction tube with a suction source creates negative pressure to pick up and transport caps, eliminating reliance on mechanical gravity feeds or conveyors that fail with lightweight caps. This substitution fundamentally changes the physical principle from mechanical to pneumatic, achieving reliable feeding of small, light caps.
Solution Approach 2:
The patent introduces a suction tube as an intermediary element between the cap supply and the application station. This intermediary component mediates the transfer of caps by creating a controlled pneumatic field that picks up individual caps and delivers them precisely, solving the problem of direct mechanical contact failures.
2Loss of substance
If cap application operations continue without monitoring, then productivity is maintained, but wastage of cartridges increases due to malfunctions
Solution Approach 1:
The patent implements a sensor-based feedback system that continuously monitors the cap feeding process. When the sensor detects a malfunction or absence of a cap, it immediately signals the control unit, which then stops the filling and capping operations. This feedback loop prevents defective processing and cartridge wastage while maintaining productivity by avoiding rework and waste disposal.
Solution Approach 2:
The system performs preliminary detection of cap presence before the capping operation proceeds. The sensor checks for cap availability in advance, and the control unit preemptively stops the process if a problem is detected, preventing wastage before it occurs rather than detecting it after the fact.
3Manufacturing precision
If high-speed capping is implemented, then productivity increases, but manufacturing precision deteriorates due to alignment difficulties
Solution Approach 1:
The patent replaces mechanical alignment mechanisms with a pneumatic positioning system. The suction tube not only picks up caps but also controls their position and orientation through pneumatic pressure, enabling precise alignment with cartridges at high speeds without complex mechanical adjustment mechanisms.
Solution Approach 2:
The suction-based system allows caps to be naturally oriented and positioned by the airflow and pressure differential created during pickup and transport. The cap self-aligns with the cartridge opening through the controlled pneumatic field, eliminating the need for separate mechanical alignment devices and enabling high-speed precise operation.
Data Source
AI summary
A machine for filling and capping cartridges for electronic-cigarettes includes a transport line for feeding cartridges; a transfer unit for transferring the cartridges from a feeding line to the transport line; a station for dispensing a predetermined quantity of product into the cartridges; a station for applying a cap to each cartridge filled with product; a system for feeding caps to the cap application station including a conveyor for transporting the caps thereto according to a pre-established formation, and a unit for detecting the caps transported by the conveyor; a control unit for checking possible empty spots in the formation of the transported caps, based on detection data provided by the detection unit, and for transmitting a stop signal to at least one among the transfer unit, the product dispensing unit and the cap application station, if an empty spot is identified in the formation of the caps.