Bottle Feedscrew

Background In the Kumarika shampoo production line, bottles are capped using an automatic cap feeder machine. The system needs to handle bottles efficiently at high speed while maintaining alignment. However, due to the asymmetric shape of the bottles, the existing feeder mechanism applied force on the neck area, causing bottles to tilt and fall during the capping process. This issue led to frequent line interruptions and reduced overall productivity. Problem / Issue Identified Bottles were falling during the capping process due to improper support. The vibration of the capping machine worsened the instability. The feeder dispenser force was directly applied to the bottle neck, making asymmetric bottles more prone to falling. The challenge was to solve the issue without reducing the line speed and while maintaining equal spacing between bottles. Solution / Implementation After researching various mechanisms and studying industry practices, I proposed a feed screw (timing screw) mechanism to stabilize and guide bottles. 3.3.4 Research & Conceptualization Analyzed different bottle handling mechanisms used in filling and packaging industries. Selected a feed screw drive system as the best solution since it provides continuous motion, proper spacing, and excellent bottle stabilization. (screw, n.d.) 1. Design & Simulation Designed the feed screw mechanism using SolidWorks. Modeled multiple screw profiles and ran motion simulations to test bottle handling at different speeds. Optimized the screw design to ensure that each bottle is precisely spaced and supported without neck pressure. 2. Adjustable Structure Development o Created a feed screw unit with adjustable mounting structure, allowing flexibility for different bottle sizes. o Designed the system to be easily synchronized with the existing conveyor and capping machine. 3. Current Status o The 3D model and simulations are completed in SolidWorks. o The feedscrew machine design has been finalized, but fabrication is yet to be done. Hardware / Tools Used SolidWorks (3D modeling & simulation) Design of feed screw mechanism (CAD models) Adjustable frame structure for flexibility 3D printer to tests some parts Software Tools Used SolidWorks (CAD + motion analysis) Simulation tools for feedscrew profile testing Conclusion / Outcome The proposed feed screw mechanism provides a reliable and efficient way to stabilize asymmetric shampoo bottles during capping. It ensures: Stable bottle handling without falling, even at high line speeds. Equal spacing between bottles for smooth capping. Reduced downtime and improved productivity. Once fabricated and integrated, the feed screw system will replace the problematic neck-force feeder and significantly improve the performance of the shampoo bottling line.