Eccentric Straw Applicator for High-Speed Packaging
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Solution Overview
Problem
Existing machines for applying drinking straws to packaging containers operate intermittently or at low speeds, which is inefficient for modern high-speed packaging lines, and their designs are complex and heavy, limiting their ability to handle rapid production.
Innovation Solution
A machine with a continuous drive system and conveyor that uses eccentrics mounted on shafts to pick up and apply drinking straws from a belt to the packaging container, allowing for high-speed operation while maintaining a simplified and lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If arms mounted on eccentric shafts are used to pick up and apply drinking straws, then the conveyor can operate continuously, but the design becomes heavy and cannot operate at high speeds
Solution Approach 1:
The patent extracts the essential function of straw application from the complex arm mechanism and implements it through a simple rotating applicator head with radial slots. This removes unnecessary structural mass while preserving the core functionality of picking up straws from the conveyor belt and applying them to packages.
Solution Approach 2:
The patent changes the operational parameters by enabling the applicator to rotate at high speeds (synchronized with the conveyor belt speed), transforming the system from a slow, heavy arm mechanism to a fast, lightweight rotating system. The radial slots in the applicator head allow straws to be picked up and deposited through centrifugal force and gravity during high-speed rotation.
2Productivity
If intermittent or low-speed operation is used to separate and apply drinking straws, then the application process is simple, but the overall machine speed is limited
Solution Approach 1:
The patent implements continuous operation of both the conveyor belt and the applicator rotor, eliminating intermittent stopping and starting. The synchronous rotation of the applicator with the conveyor ensures that straw separation and application occur continuously at high speed, maximizing productivity without requiring complex intermittent drive mechanisms.
Solution Approach 2:
The patent merges the functions of straw separation, pickup, and application into a single integrated rotating applicator mechanism. The radial slots in the applicator head perform multiple functions simultaneously: guiding straws from the belt, holding them during rotation, and depositing them on packages, thereby simplifying the overall device while enabling high-speed continuous operation.
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
Enables continuous and high-speed application of drinking straws to packaging containers, improving efficiency and reducing the complexity and mass of moving parts, allowing the machine to operate effectively with modern rapid filling machines.
Implementation Method 1
Hot melt, which consists of molten plastic, adheres to the drinking straw sleeve and holds it in position when it sets
Data Source
AI summary
An apparatus for applying drinking straws on prefabricated packaging containers includes a drive device for continuous belts of drinking straws wrapped in protective sleeves or envelopes, a conveyor for moving packaging containers past the drinking straw applicator, a separator for separating drinking straws from the belt, as well as an applicator for applying the drinking straw on a side wall of the packaging container. The drinking straw applicator include at least one eccentric which is eccentrically disposed on a shaft mounted adjacent the drive device. During rotation of the shaft, the eccentric is moved from an inner position to an outer position, a drinking straw is picked up at the inner position and is applied on a packaging container at the outer position.