Screw-Type Coin Conveyor Prevents Tilted Rotation
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Solution Overview
Problem
Conventional coin processing apparatuses experience conveyance failures due to reduced friction force from contamination and tilted rotation of coins on belt conveyors, leading to inefficient coin sorting and storage.
Innovation Solution
The apparatus employs a screw-type conveying member with a helical blade section on a cylindrical shaft, rotated around a central axis to convey coins, preventing conveyance failures by maintaining friction and ensuring proper alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a belt conveyor is used to convey coins, then the structure is simple and easy to manufacture, but conveyance force is reduced due to contamination and tilted rotation occurs
Solution Approach 1:
The patent replaces the belt conveyor mechanical system with a screw-type conveying member. The screw structure uses rotational motion to advance coins through the conveying channel, eliminating the friction-dependent belt system. This substitution maintains manufacturing simplicity while ensuring reliable conveyance through the self-locking nature of screw threads and the helical blade geometry that positively engages with coins.
Solution Approach 2:
The patent changes the conveying mechanism from a friction-based belt system to a positive displacement screw system. The helical blade section creates pockets that physically transport coins, changing the fundamental parameter of conveyance from friction-dependent to geometry-dependent. This ensures consistent conveyance force regardless of coin surface contamination.
2Device complexity
If a belt conveyor is used to convey coins, then the device complexity is low, but tilted rotation of coins occurs during conveyance
Solution Approach 1:
The screw-type conveying member with helical blade sections creates a controlled environment that guides coin orientation. As the screw rotates, the helical blades engage with coins and maintain them in a consistent rotational position, preventing tilted rotation. The structure remains relatively simple while dramatically improving orientation stability.
Solution Approach 2:
The rotating screw mechanism dynamically adjusts to coin placement, with the helical blades continuously engaging and re-engaging coins during rotation. This dynamic interaction ensures that coins are maintained in the correct orientation throughout the conveying process, adapting to variations in coin entry position while preventing tilted rotation.
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
This solution effectively conveys and sorts coins without reductions in conveyance force or tilted rotation, enhancing the reliability and efficiency of the coin processing system.
Implementation Method 1
the screw-type conveying member is rotated around a central axis of the shaft section so that a coin is conveyed
Implementation Method 2
a blade section provided on an outer circumference of the cylindrical shaft section in a helical fashion and protruding in a radial direction
Data Source
AI summary
A coin processing apparatus determines an authenticity and a type of a received coin, holds a coin, which is determined to be an authentic coin, and then sorts and stores the coin for each type of coin and that further pays a stored coin in response to a coin drawing command. The coin processing apparatus includes a conveyor that conveys the coin. The conveyor includes a screw-type conveying member including a cylindrical shaft section, and a blade section provided on an outer circumference of the cylindrical shaft section in a helical fashion and protruding in a radial direction. The screw-type conveying member is rotated around a central axis of the shaft section so that a coin is conveyed.