Embroidery Laser Calibration Using Vision-Based Reference Marks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automatic electronically controlled combined laser cutting and engraving and embroidering systems face challenges in aligning the embroidery needle and laser beam accurately, requiring manual calibration that is time-consuming and lacks precision.
Innovation Solution
The system incorporates an image acquisition device to capture bidimensional reference signs from both the embroidery needle and laser beam, using electronic calibration means to calculate the real distance between these points and adjust the laser beam's position for precise alignment, enabling automatic correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calibration method is used to align embroidery needle and laser beam, then alignment can be achieved, but calibration time is excessive and precision is insufficient
Solution Approach 1:
The patent replaces the manual mechanical calibration system with an automated vision-based calibration system. An image acquisition device captures images of reference signs, and electronic calibration means automatically calculate positions and generate correction data, eliminating the need for manual measurement and alignment operations.
Solution Approach 2:
The system performs self-calibration through automated image processing and position calculation. The electronic calibration means automatically processes images of reference signs, calculates real distances, generates correction data, and transmits it to the control unit without requiring external manual intervention, enabling the system to calibrate itself.
2Productivity
If automated calibration system is implemented with image acquisition device, then calibration speed and precision improve, but device complexity increases
Solution Approach 1:
The image acquisition device serves multiple functions: capturing images of reference signs, enabling position measurement, and providing data for calibration calculations. The electronic calibration means performs multiple tasks including image processing, distance calculation, correction data generation, and communication with the control unit, reducing the need for separate dedicated components.
Data Source
Figure 1~3
AI summary
The invention relates to a process for the calibration of a combined laser cutting and engraving and embroidering system (10) which comprises the following steps: executing a first at least bidimensional reference sign (36) on a support positioned on a working plane defined in the x and y coordinates by means of a needle of an embroidery head (14) of said combined laser cutting and engraving and embroidery system (10); executing a second at least bidimensional reference sign (38) on the support by means of the laser beam of said combined laser cutting and engraving and embroidery system (10); capturing an image of both the reference signs (36, 38) with an image acquisition device (32); and determining and possibly correcting the position of the laser beam with respect to the needle on the basis of the distance of the reference signs in the image. The invention further relates to a combined laser cutting and engraving and embroidery system suitable to perform the process according to the invention.