Wire Cutting Device With Internal Rotary Sensor
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Solution Overview
Problem
Existing wire cutting devices face challenges in reliably detecting the formation of an arrow on the wire, as conventional solutions are often remote, prone to damage, and susceptible to liquid splashes, leading to unreliable detection results.
Innovation Solution
Integrating detection sensors within the rotary members of the wire cutting device, allowing for internal protection and improved reliability, with a calibration system to correlate duty cycle with arrow length for precise deflection measurement and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If detection sensors are placed remotely outside the cutting zone, then the device complexity is reduced, but the reliability of detection is worsened due to risk of damage and liquid splash interference
Solution Approach 1:
The detection sensor is integrated inside the rotary member, nesting the sensor within the existing structural component. This protects the sensor from external damage and liquid splashes while maintaining its detection function through the rotary member's structure.
Solution Approach 2:
The rotary member acts as an intermediary structure that houses the detection sensor. The sensor detects wire position indirectly through the rotary member's rotation, which is driven by the wire's movement, thus isolating the sensor from direct exposure to harsh cutting conditions.
2Reliability
If detection sensors are integrated inside rotary members, then the reliability of detection is improved through internal protection, but the device complexity increases
Solution Approach 1:
The detection sensor and rotary member are merged into a single integrated unit. The sensor becomes part of the rotary member's internal structure, eliminating the need for separate sensor housings and mounting mechanisms, thus reducing overall device complexity despite the integration.
Solution Approach 2:
The rotary member serves multiple functions: it drives the wire through rotation, houses the detection sensor for position monitoring, and provides structural support. This multi-functionality reduces the need for additional components, offsetting the complexity of integrating the sensor.
3Ease of operation
If remote sensors are used for arrow detection, then the ease of operation is improved, but the measurement precision is worsened due to susceptibility to liquid splashes and damage
Solution Approach 1:
The detection sensor is nested inside the rotary member, protecting it from liquid splashes that would interfere with measurement precision. The sensor remains shielded while continuously monitoring wire position through the rotary member's rotation.
4Measurement precision
If sensors are placed in the path of the wire for direct detection, then the measurement precision is improved, but the reliability is worsened due to constant damage risk
Solution Approach 1:
The rotary member serves as an intermediary between the wire and the detection sensor. The sensor detects wire position indirectly by monitoring the rotation of the rotary member, which is driven by the wire's movement. This intermediary arrangement maintains measurement precision while protecting the sensor from direct contact with the wire and cutting zone hazards.
Data Source
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AI summary
The main subject matter of the invention relates to a device (1) for cutting by wire (2), comprising at least one first rotary member (5b), characterized in that the device (1) comprises a detection and measurement system (10) of the sag (F) formed on the wire (2), comprising at least one sensor (6) for detection of the presence or non-presence of the wire (2), included in the interior of at least the one said first rotary member (5a) and second rotary member (5b), the detection sensor (6) being configured to supply a signal on the detection or non-detection of the wire (2), providing information on the presence or otherwise of a sag (F), and in that the detection and measurement system (10) further comprises an electronic processing system (8) configured to determine the measurement of the sag (F) from the detection signal.