Cap Attachment System with Optical Error Detection
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Solution Overview
Problem
Current automated cap application devices are unable to efficiently apply childproof caps onto bottles, as they lack mechanisms for picking up caps, aligning them with bottles, and ensuring correct orientation and torque application, and are incompatible with non-specialized caps and bottles.
Innovation Solution
A fully automated cap application device featuring a pick & place assembly with a cam-chuck component and spring-loaded jaws, an optical error detection system, and a compensation slide assembly with a spring component to ensure consistent engagement and prevent over-torque, allowing for the use of childproof caps on various bottles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual cap application is used, then flexibility and adaptability to different cap types are maintained, but productivity and consistency are insufficient
Solution Approach 1:
The system uses optical sensors to automatically detect cap orientation and positioning, eliminating the need for manual inspection. The feedback mechanism automatically adjusts the capping head position and orientation based on sensor data, enabling the system to self-correct without human intervention while maintaining high productivity and consistency
Solution Approach 2:
The patent replaces manual mechanical operations with an automated system that uses optical sensing and computer-controlled mechanical movement. The capping head is positioned and oriented automatically using servo motors and feedback from optical sensors, substituting human dexterity and judgment with automated detection and control systems
2Extent of automation
If specialized automated capping devices are used, then automation and productivity are improved, but adaptability to non-specialized caps and bottles is lost
Solution Approach 1:
The system is designed with universal adaptability to handle multiple cap types including childproof, flip-top, and sport caps. The optical sensing system can detect various cap orientations and the capping head can adjust its position and rotation to accommodate different bottle and cap geometries, making the automated system compatible with non-specialized components
Solution Approach 2:
The capping head is mounted on a dynamically adjustable mechanism that can change its position, orientation, and rotation based on real-time feedback from optical sensors. This dynamic adjustment capability allows the system to adapt to different cap and bottle configurations while maintaining full automation, resolving the contradiction between automation and versatility
3Productivity
If forceful cap application is used, then capping speed is improved, but risk of over-torque and damage increases
Solution Approach 1:
The system incorporates optical sensors that provide real-time feedback on cap position, orientation, and engagement status. This feedback allows the control system to monitor the capping process and adjust applied force dynamically, ensuring caps are tightened to the correct torque without over-tightening, thereby maintaining both speed and reliability
Solution Approach 2:
The capping process uses periodic incremental rotation with feedback checks at each stage. The system rotates the cap incrementally, checks engagement status with optical sensors, and adjusts force accordingly, preventing over-torque while maintaining efficient throughput through automated periodic cycles
4Manufacturing precision
If cap orientation detection is added, then capping accuracy is improved, but device complexity increases
Solution Approach 1:
The patent uses optical sensing systems to detect cap orientation and positioning, replacing what would otherwise require complex mechanical alignment mechanisms. The optical sensors provide non-contact detection capability, simplifying the overall system architecture while achieving high precision in cap orientation detection and verification
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 device enables consistent and error-free childproof cap application, accommodating different cap and bottle threading variations, and ensures correct orientation and torque application, addressing the limitations of existing systems.
Implementation Method 1
a spring component configured to compress when the cap is lowered onto the bottle such that the first set of threads of the cap consistently engages with the second set of threads of the bottle and over-application of force from the cap to the bottle is prevented
Implementation Method 2
an optical error detection assembly comprising a first optical sensor configured to detect whether or not the cap is gripped by the cam-chuck component and a second optical sensor configured to detect whether or not the cap is in the correct position in the cam-chuck component
Data Source
AI summary
A device configured to autonomously attach a cap to a bottle in a childproof manner. The device may comprise a cap feed line and a bottle feed line. The device may further comprise a moving arm assembly comprising a cam-chuck component having a plurality of jaws configured to grip, lift, and lower a cap onto the bottle. The device may further comprise a slide compensation assembly configured to prevent over-application of force of the cap to the bottle. The device may further comprise a screw drive assembly configured to screw the cap onto the bottle as downward force is applied. The device may further comprise an optical assembly for detecting errors in picking up the cap.