Cutting Blade Turning Restoring Mechanism for Cord-Embedded Rubber
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Solution Overview
Problem
Existing cutting devices for cord-embedded rubber sheet members often inaccurately cut between and along cords due to deviations in the cutting blade's advancement direction, leading to biased cuts and exposed cords.
Innovation Solution
A cutting device with a cutting blade that applies a constant turning restoring force to maintain the cutting-edge advancement direction aligned with the cord extension, using magnetic forces and adjustment mechanisms to ensure precise alignment and movement along the cords, preventing deviations and ensuring accurate cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cutting blade is made turnable around the vertical axis before cutting, then the cutting blade can be positioned at a standby position, but the cutting-edge advancement direction may deviate from the cord extension direction
Solution Approach 1:
A sensor detects the actual cutting-edge advancement direction of the cutting blade and feeds this information back to a controller. The controller compares the detected direction with the preset correct direction (parallel to cord extension) and generates correction signals to adjust the blade holder's angular position, ensuring accurate cutting alignment
Solution Approach 2:
The patent replaces pure mechanical alignment methods with a combination of sensors, controllers, and actuators. Instead of relying solely on mechanical guides or manual positioning, the system uses electronic detection and control to maintain the cutting blade's precise orientation relative to the cords
2Productivity
If the cutting blade is moved while the rubber sheet member is sandwiched between the cutting blade and blade receiving roll, then cutting can be performed, but the rubber sheet member may be cut biased toward one cord side and cords may be exposed
Solution Approach 1:
A sensor detects the actual cutting-edge advancement direction during the cutting operation and feeds this information back to a controller. The controller continuously adjusts the blade holder's angular position to maintain the cutting edge parallel to the cord extension direction, preventing biased cuts and cord exposure
Solution Approach 2:
The system performs preliminary detection of the cutting blade's angular position and the cord extension direction before the cutting operation begins. The controller pre-adjusts the blade holder's position to ensure the cutting edge is properly aligned with the cords before the cutting process starts, preventing cutting biases
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 device accurately cuts the rubber sheet member between and along the cords, preventing cord exposure and ensuring precise length cuts, thereby enhancing the cutting process's reliability and accuracy.
Implementation Method 1
a turning restoring mechanism (13) that applies a turning restoring force to the cutting blade (3)
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Provided are a cutting device and a cutting method that can provide a rubber sheet member accurately cut between cords embedded in unvulcanized rubber and along the cords. A blade receiving portion (6) crossing a cord-embedded rubber sheet member (S) is disposed in one surface side in a thickness direction of the rubber sheet member (S) placed in a conveying mechanism (2). A cutting blade (3) disposed in the other surface side is held by a holder (4) that rotates about a turning shaft (5) extending in the thickness direction of the rubber sheet member (S). In a state in which a cutting-edge advancement direction (Dr) turns about the turning shaft (5), a turning restoring force that restores the cutting-edge advancement direction (Dr) to a preset moving direction is constantly applied by a turning restoring mechanism (13) to the cutting blade (3) before cutting the rubber sheet member (S). The rubber sheet member (S) is sandwiched in the thickness direction by the cutting blade (3) and the blade receiving portion (6), and the cutting blade (3) is moved in the extension direction of cords (C). Accordingly, the rubber sheet member (S) is cut between the cords (C).