Tire Cutting Disc Braking Mechanism for Cycle Time Reduction
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Solution Overview
Problem
The existing cutting device of the 'disc-and-bar' type suffers from increased cycle time due to the cutting disc not fully stopping rotation before the return stroke, which can damage the disc and/or the cutting bar, leading to reduced durability and longer operation times.
Innovation Solution
A cutting device with a braking member fixed in the lifting direction that slows down the cutting disc in the standby position, allowing it to stop rotating before the return stroke, thereby preventing damage and reducing cycle time, without the need for additional positioning means like drives or actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cutting disc is allowed to rotate freely in the standby position, then the device complexity is reduced, but the cycle time increases and damage risk to cutting components increases
Solution Approach 1:
The braking function is extracted as a separate, dedicated component (braking member) that is only activated when needed during the return stroke. This allows the cutting disc to rotate freely during cutting operations while providing controlled braking during the return phase, resolving the contradiction between simplicity and cycle time reduction.
Solution Approach 2:
The braking member is positioned and configured in advance to engage with the cutting disc before the return stroke begins. This preliminary positioning ensures that braking action is immediately available when the cutting disc starts its return movement, preventing damage and reducing cycle time without adding complex control systems.
2Loss of time
If a braking member is added to slow down the cutting disc, then the cycle time is reduced and durability is improved, but the device complexity increases
Solution Approach 1:
The braking member is designed to automatically engage with the cutting disc through the natural movement of the carriage during the return stroke. The system uses its own operational movements to activate the braking function without requiring external control systems, sensors, or additional actuators, thus minimizing the increase in device complexity.
3Reliability
If the braking member is made movable to follow the cutting disc, then the braking effectiveness is improved, but the device complexity and weight increase
Solution Approach 1:
The braking function is segmented from the main carriage structure and implemented as a separate, fixed braking member. This segmentation allows the braking component to remain simple and stationary while the carriage movement naturally brings the cutting disc into and out of the braking zone, achieving effective braking without adding complexity to the braking member itself.
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
The braking member effectively reduces the cycle time by ensuring the cutting disc is stationary before the next cutting stroke, enhancing durability and operational efficiency by eliminating the risk of damage and simplifying the device's design.
Implementation Method 1
a braking member (4) that is fixed in the lifting direction at the standby position for braking the rotation of the cutting disc (3) when said cutting disc (3) is in the standby position
Data Source
AI summary
A cutting device and a method are provided for cutting a tire component. The cutting device includes a counter member and a cutting disc that is movable in a cutting direction over a cutting stroke along said counter member for cutting the tire component in cooperation with said counter member. The cutting disc, at an end of the cutting stroke, is movable in a lifting direction from a cutting position at the counter member into a standby position away from the counter member. The cutting disc, in said standby position, is movable in a return direction opposite to the cutting direction over a return stroke. The cutting device further includes a braking member that is fixed in the lifting direction at the standby position for braking the rotation of the cutting disc when said cutting disc is in the standby position.