Amorphous Ribbon Take-Up Roll Switching Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for switching take-up rolls in amorphous ribbon casting face challenges in reliably switching without breaking the ribbon, due to limitations in balancing casting speed, take-up speed, and tension, leading to inconsistent ribbon transfer.
Innovation Solution
A method and system using a carousel-type take-up device with multiple magnetized rolls, where the ribbon is brought into contact with the next take-up roll and cut between rolls, with a guide device pressing the ribbon tip against the take-up roll surface to ensure stable engagement and prevent breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single take-up roll is used to take up the amorphous ribbon, then the equipment structure is simple, but the take-up weight is limited and it is difficult to balance casting speed, take-up speed, and tension
Solution Approach 1:
The invention divides the take-up function into multiple independent take-up rolls (first take-up roll and second take-up roll) that operate in sequence. The ribbon is transferred from one roll to another through a controlled switching mechanism, allowing each roll to handle portion of the take-up load and enabling better speed and tension control.
2Ease of operation
If take-up rolls are switched by making the next roll enter from below and contact the ribbon, then switching can be performed, but the ribbon often breaks right after switching or take-up cannot be continued
Solution Approach 1:
The invention performs preliminary actions before the actual switching occurs: the next take-up roll is pre-positioned and pre-accelerated to match the ribbon speed, and the switching guide is pre-adjusted to the correct angle. This ensures that when the transfer happens, the ribbon encounters minimal disturbance and maintains continuity.
Solution Approach 2:
The invention dynamically adjusts critical parameters during the switching process: the speed of the next take-up roll is adjusted to match the ribbon speed, the position of the switching guide is adjusted to optimize the transfer angle, and the magnetic field strength is adjusted to ensure proper ribbon adhesion. These parameter changes ensure smooth transition without ribbon breakage.
3Manufacturing precision
If the distance L1 between cutting position and next take-up roll is made less than L2/20 (where L2 is distance from next take-up roll to cooling roll), then switching can be performed, but the ribbon speed and take-up roll speed must be matched within ±2 m/sec which is difficult to control
Solution Approach 1:
The invention introduces a switching guide as an intermediary component between the cutting position and the next take-up roll. This guide facilitates the ribbon transition through a controlled path with optimized geometry, allowing more flexible positioning and reducing the stringent requirements for L1 distance and speed matching.
Solution Approach 2:
The invention makes the switching guide a movable component that can be dynamically adjusted during operation. The guide position and angle can be adapted in real-time to optimize the ribbon transfer path, providing flexibility that reduces the need for precise fixed positioning and complex speed control.
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 reliable and cost-effective switching of take-up rolls without ribbon breakage, maintaining continuous production even with fluctuations in casting speed and ribbon thickness.
Implementation Method 1
a take-up device comprised of a plurality of two or more take-up rolls... two or more take-up rolls magnetized on their surfaces... bringing the amorphous ribbon into contact with the next take-up roll
Data Source
AI summary
The present invention provides an amorphous ribbon take-up roll switching and method which use a take-up device provided with a plurality of take-up rolls magnetized on their surfaces so as to take up an amorphous alloy ribbon during which it is possible to simply and inexpensively switch take-up rolls stably without ribbon breaking, uneven take-up, or other trouble regardless of the amount of take-up, that is, a method of taking up amorphous ribbon having a magnetic property cast using a cooling roll by using two or more take-up rolls, which amorphous ribbon switching method characterized by, when switching the take-up rolls, bringing the amorphous ribbon into contact with the next take-up roll and cutting the amorphous ribbon being taken up in the state with the next take-up roll brought into proximity with the cooling roll or separating the next take-up roll and the cooling roll and cutting the amorphous ribbon between the take-up roll and the next take-up roll.