Cap-Removal Chute Layout for Liquid-Resistant Cap Detection
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Solution Overview
Problem
Existing cap-removal apparatuses struggle with unreliable detection of removed caps due to false triggers from spilled liquid or smaller objects, leading to inaccurate cap counting.
Innovation Solution
A chute arrangement with a detection range and bypass portion design that separates liquid from the detection area, using a sensor with a response time of 2.9 ms or less, allowing only cap-sized objects to be recognized, thereby enhancing detection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor detection range covers the entire transport space, then all objects including liquid can be detected, but false triggers occur due to liquid or small objects being detected as caps
Solution Approach 1:
The transport space is segmented into two distinct zones: a detection range where only cap-sized objects are detected, and a bypass portion where liquid can flow without triggering the sensor. This spatial segmentation allows the sensor to reliably detect caps while ignoring liquid spills.
Solution Approach 2:
The harmful factor (liquid) is extracted from the detection range by providing a separate bypass portion. Liquid is diverted away from the sensor's detection path, allowing the sensor to focus exclusively on detecting cap-sized objects without false triggers from liquid.
2Device complexity
If the detection range is positioned close to the chute bottom, then compact design is achieved, but liquid spills trigger false sensor signals
Solution Approach 1:
The problem is solved by utilizing the vertical dimension perpendicular to the chute bottom. The detection range is positioned at a specific height above the chute bottom, creating a three-dimensional detection zone that excludes liquid flowing along the bottom while maintaining compact horizontal footprint.
3Measurement precision
If the sensor has fast response time for accurate cap detection, then counting precision improves, but the system becomes more sensitive to liquid triggers
Solution Approach 1:
The harmful factor (liquid) is extracted from the sensor's detection path by creating a bypass portion. This allows the sensor to maintain fast response time for accurate cap detection without being triggered by liquid spills, as liquid is diverted away from the detection range.
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 chute arrangement ensures precise and reliable cap detection by preventing liquid from triggering the sensor, thus accurately counting caps and reducing false positives.
Implementation Method 1
a sensor (4) having a detection range (5). The sensor (4) is adapted for detecting caps (C) passing through the detection range (5)
Implementation Method 2
The chute has a chute bottom (6) which is inclined with respect to gravity. When being transported by the chute, the removed caps can slide along the chute and through at least a portion of the transport space (3)
Data Source
AI summary
The invention relates to a chute arrangement for a cap-removal apparatus, the cap removal apparatus being configured to remove caps from sample containers, the chute arrangement comprising a chute for transporting removed caps through a transport space of the chute arrangement, a sensor for detecting caps passing through a detection range of the sensor, the transport space being partially delimited by a chute bottom of the chute, the chute bottom being inclined with respect to gravity, the detection range protruding into the transport space, the detection range having a range border within the transport space, and the range border facing the chute bottom at a distance so that a bypass portion of the transport space is formed in between the chute bottom and the detection range.