Rubber Molding Die Clearance Control via Sensor Feedback
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Solution Overview
Problem
The existing method for molding rubber members is hindered by the inability to set the clearance between the die and the molding surface with high accuracy, leading to variations due to manual measurement and individual differences.
Innovation Solution
A rubber member molding method and device that uses a sensor and control system to accurately set the abutting position of the die relative to the molding surface, allowing for precise calculation and adjustment of the clearance by measuring displacement, ensuring the die is separated by a desired thickness at the start of molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual measurement with gap gauge is used to set clearance, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent replaces manual mechanical measurement with a sensor-based detection system. A sensor detects the abutting position of the die against the molding surface, and a control system automatically calculates and sets the clearance based on this detection, eliminating manual gap gauge measurement and its associated human variation.
Solution Approach 2:
The system performs self-measurement and self-adjustment. The sensor automatically detects the die position, the control system calculates the required clearance, and the die position is automatically adjusted without requiring manual intervention for measurement and adjustment.
2Manufacturing precision
If automated sensor-based positioning is used, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces a sensor as an intermediary between the die and the control system. The sensor detects the abutting position and transmits this information to the control system, which then calculates and adjusts the die position, providing an automated measurement and control mechanism.
3Device complexity
If clearance is manually adjusted, then device complexity is reduced, but reliability deteriorates due to individual variations
Solution Approach 1:
The system implements feedback control where the sensor continuously monitors the die position relative to the molding surface. The control system receives this feedback, compares it with the target abutting position, and automatically adjusts the die position to maintain accurate clearance settings, eliminating individual variation effects.
Data Source
AI summary
A rubber member molding method for molding a rubber member having a belt shape by attaching rubber discharged from a die to a molding surface while relatively moving the die and the molding surface in a direction along the molding surface, the rubber member molding method includes setting, as an abutting position, a position where a first one of the die and the molding surface is moved in a direction of moving closer to a second one and abuts on the second one before start of molding, and setting, as a molding start position, a position where the first one is moved from the abutting position in a direction of moving away from the second one by a desired thickness of a rubber member at the start of molding.