Dispensing Nozzle Tip Cutting to Prevent Disposal Box Clogging
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Solution Overview
Problem
Existing preprocessing devices face issues with nozzle tip accumulation in disposal boxes, leading to inefficiencies and temporary suspension of processing when the disposal box reaches capacity, and occasional bamboo shoot-like stacking that blocks further disposal.
Innovation Solution
A preprocessing device with a cutting mechanism that cuts dispensing nozzle tips from the longitudinal side, improving accommodation efficiency and preventing accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple tip removers are placed to disperse nozzle tip disposal locations, then accommodation efficiency is improved, but bamboo shoot-shaped accumulation still occurs blocking the disposal box entrance
Solution Approach 1:
The cutting mechanism segments the nozzle tip into two parts: the proximal portion is retained in the disposal box while the distal portion is removed. This segmentation prevents complete nozzle tip accumulation and bamboo shoot-shaped blocking at the disposal box entrance, while maximizing accommodation capacity
Solution Approach 2:
The cutting mechanism extracts and removes only the necessary distal portion of the nozzle tip that causes blocking, while retaining the useful proximal portion in the disposal box. This selective extraction maintains high accommodation efficiency while preventing harmful accumulation
2Loss of time
If the disposal box is designed to accommodate more nozzle tips, then manual removal frequency is reduced, but the device must be temporarily suspended when capacity is reached
Solution Approach 1:
The cutting mechanism performs preliminary action by automatically cutting and removing the distal portion of nozzle tips during the dispensing process. This prevents the disposal box from reaching full capacity and eliminates the need for temporary suspension and manual removal, thereby reducing time loss and maintaining productivity
3Quantity of substance
If the cutting mechanism removes nozzle tips from the longitudinal side, then accommodation efficiency is improved and accumulation is suppressed, but device complexity increases
Solution Approach 1:
The cutting mechanism is integrated into the existing tip remover and disposal box structure, utilizing the natural movement and positioning of the nozzle tip during removal. The system performs self-service by automatically cutting the nozzle tip without requiring additional complex external mechanisms, thereby achieving improved accommodation efficiency with minimal increase in device complexity
Data Source
AI summary
A preprocessing device that carries out a dispensing process for aspirating a liquid sample accommodated in a sample container, and subsequently discharging and dispensing the sample into another sample container, the preprocessing device comprising: a dispensing nozzle; a dispensing nozzle tip detachably provided to the distal end of the dispensing nozzle; a disposal box in which the dispensing nozzle tip is disposed of after having been removed from the dispensing nozzle; and a cutting mechanism for cutting a dispensing nozzle tip inserted into a removal part, which removes the dispensing nozzle tip from the dispensing nozzle, from the longitudinal-direction side. This makes it possible to improve accommodation efficiency while suppressing accumulation of disposed-of dispensing nozzle tips.