Powder-Rolling Device with Movable Preliminary Press Roll
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Solution Overview
Problem
In powder-rolling devices, large grain diameter powder particles can temporarily apply excessive load to the preliminary press roll, leading to unstable powder layer formation and non-uniform thickness, making it difficult to attach the powder material uniformly to the base material by pressure.
Innovation Solution
A support device is used to move the preliminary press roll in a way that the load applied to it remains constant, by adjusting its position relative to the rolling roll, using a pressure cylinder or elastic member to maintain a set load value, preventing excessive load from large grain diameter particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a preliminary press roll is used to press powder material to the rolling roll, then the powder material can be stably supplied to between the rolling rolls, but large grain diameter particles can temporarily apply excessive load to the preliminary press roll, causing unstable powder layer formation
Solution Approach 1:
The preliminary press roll is configured to be movable rather than fixed, allowing it to dynamically adjust its position in response to varying loads from powder particles of different sizes. This dynamic capability enables the roll to accommodate large grain diameter particles without excessive load, while maintaining stable powder supply during normal operation.
Solution Approach 2:
The gap between the preliminary press roll and the rolling roll is made variable rather than constant. By changing the gap parameter in response to particle size, the system can prevent excessive load from large particles while maintaining optimal powder supply conditions for normal operation.
2Device complexity
If the gap between preliminary press roll and rolling roll is kept constant, then the structure is simple, but large grain diameter particles cause excessive load and non-uniform powder layer thickness
Solution Approach 1:
The system transitions from a static constant gap structure to a dynamic variable gap structure. The preliminary press roll can move to adjust the gap size, allowing the system to adapt to particle size variations and maintain uniform powder layer thickness without excessive complexity.
Solution Approach 2:
The preliminary press roll automatically adjusts its position in response to particle size variations, eliminating the need for complex external control systems. The roll self-regulates the gap to prevent excessive load while maintaining powder layer uniformity.
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 approach prevents temporary load increases on the powder material and preliminary press roll, ensuring a uniform powder layer formation and stable attachment of the powder material to the base material by pressure.
Implementation Method 1
using a pressure cylinder or elastic member to maintain a set load value
Data Source
AI summary
The powder-rolling device (1) includes: a pair of rolling rolls (2) to attach powder material (Y) to a sheet-shaped base material (X) by pressure; a preliminary press roll (8) to press the powder material (Y) to a circumferential surface of a rolling roll (2) before the powder material (Y) is attached to the base material (X) by pressure; and a support device (10) supporting the preliminary press roll (8) movable, so that a load applied to the preliminary press roll (8) becomes equal to a set value which has been set beforehand.