Rotatable Laser Marker Housing With Position-Gated Emission
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Solution Overview
Problem
Existing laser markers may emit laser light in unexpected directions when the printing beam exit member rotates, posing safety concerns due to unpredictable emission paths.
Innovation Solution
A laser marker design that includes a second housing accommodating a scanner, which is rotatable and requires specific position detection by sensors to control the emission of laser light, ensuring it only emits when in predetermined positions, thereby preventing unintended direction emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the second housing is made rotatable to enhance adaptability, then the adaptability improves, but the safety deteriorates due to unpredictable laser emission directions
Solution Approach 1:
The sensor detects the rotation angle of the second housing and provides feedback to the controller. The controller uses this feedback to determine whether to permit laser light emission based on whether the housing is at a predetermined safe position. This closed-loop feedback mechanism ensures that the laser only emits when the rotatable housing is in a safe orientation, resolving the safety issue while maintaining adaptability.
Solution Approach 2:
The system dynamically adjusts the laser emission state based on the real-time rotation position of the second housing. Rather than a fixed emission mode, the laser emission is dynamically controlled to match the housing's angular position, allowing the system to adapt to different orientations while preventing unsafe emissions through position-dependent control.
2Object-affected harmful factors
If the sensor and controller are added to control laser emission based on housing position, then the safety improves, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical safety interlocking mechanisms with a sensor-based detection and electronic control system. Instead of using mechanical blocks or physical constraints to prevent unsafe emissions, the system uses optical or electrical sensors to detect housing position and electronically controls the laser emission, simplifying the overall mechanical structure while improving safety.
Solution Approach 2:
The system automatically monitors its own state through the sensor detecting the housing rotation angle and autonomously controls the laser emission based on the detected position. The controller self-adjusts the emission state without external intervention, making the safety mechanism self-regulating and reducing the need for additional control components or manual safety procedures.
Data Source
AI summary
A laser marker includes a laser light source; a scanner configured to scan laser light, from the laser light source, outward; a first housing accommodating the laser light source; a second housing accommodating the scanner, the second housing being rotatable with respect to the first housing; a sensor configured to output a detection signal; and a controller configured to: based on receiving the detection signal indicating that the rotation position of the second housing is either in a first or second rotation position from the sensor, control the laser light source to emit the laser light outward; and based on receiving the detection signal, not indicating that the rotation position of the second housing is either in the first or second rotation position, control the laser light source not to emit the laser light outward.