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Fully automatic laser engraving method for bamboo chopsticks

A laser engraving and fully automatic technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problem that a single threshold value cannot be used universally, and achieve the effect of low difficulty, low cost and simple algorithm

Active Publication Date: 2018-06-22
ZHEJIANG SHUANGQIANG BAMBOO & WOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the color depth of different batches of bamboo has certain differences, and a single threshold value cannot be used universally.

Method used

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  • Fully automatic laser engraving method for bamboo chopsticks
  • Fully automatic laser engraving method for bamboo chopsticks
  • Fully automatic laser engraving method for bamboo chopsticks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] refer to Figure 6 , the orientation recognition method of the blue face / yellow face described in step S2 comprises:

[0079] Step S2-1, original image acquisition: take the grayscale image including the butt end of the bamboo chopsticks as the original image P1;

[0080] Step S2-2, obtaining the recognition reference image: from the original image P1, the bamboo chopsticks end face image P2 is intercepted as the judgment reference image with the bamboo chopsticks end face contour as the boundary;

[0081] Step S2-3, judging the orientation of the green side / yellow side:

[0082] Step S2-3-1: determine the identification regions Region1-Region4 respectively corresponding to the four sides Side1-Side4 of the reference image in the reference image P2;

[0083] Step S2-3-2: compare the vascular bundle density of the four recognition regions Region1-Region4; respectively calculate the average gray value in the four recognition regions Region1-Region4, the smaller the aver...

Embodiment 2

[0086] refer to Figure 7 , the orientation recognition method of the blue face / yellow face described in step S2 comprises:

[0087] Step S2-1, original image acquisition: take the grayscale image including the butt end of the bamboo chopsticks as the original image P1;

[0088] Step S2-2, obtaining the recognition reference image: from the original image P1, the bamboo chopsticks end face image P2 is intercepted as the judgment reference image with the bamboo chopsticks end face contour as the boundary;

[0089] Step S2-3, judging the orientation of the green side / yellow side:

[0090] Step S2-3-1: determine the identification regions Region1-Region4 respectively corresponding to the four sides Side1-Side4 of the reference image in the reference image P2;

[0091] Step S2-3-2: compare the vascular bundle density of the four recognition regions Region1-Region4; respectively calculate the sum of the gray values ​​of each pixel in the four recognition regions Region1-Region4, ...

Embodiment 3

[0094] refer to Figure 8 , the orientation recognition method of the blue face / yellow face described in step S2 comprises:

[0095] Step S2-1, original image acquisition: set the imaging background to a light-colored background, and take the grayscale image including the butt end of bamboo chopsticks as the original image P1 based on the color depth being less than the lightest color of common vascular bundles;

[0096] Step S2-2, obtaining the recognition reference image:

[0097] Step S2-2-1: converting the grayscale image of the original image P1 into a binary image P1';

[0098] Step S2-2-2: Remove all continuous white pixels from the boundary of the binary image P1' to obtain the image P2 as the judgment reference image;

[0099] Step S2-3, judging the orientation of the green side / yellow side:

[0100] Step S2-3-1: determine the identification regions Region1-Region4 respectively corresponding to the four sides Side1-Side4 of the reference image in the reference imag...

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Abstract

The invention belongs to the technical field of bamboo chopsticks processing, and discloses a full automatic laser engraving method of bamboo chopsticks. The automatic laser engraving method of the bamboo chopsticks includes step S1 of delivering the to-be-processed bamboo chopsticks to pass through an identifying station, an overturning station and an engraving station orderly; step S2 of identifying orientation of a green face / a yellow face of the bamboo chopsticks at the identifying station; step S3 of overturning the non-upward bamboo chopsticks of the green face / yellow face of the overturning station, and making the green face / yellow face of the engraving face upwards; step S4 of engraving a pattern on the green face / yellow face of the bamboo chopsticks on the engraving station through the laser engraving machine; in step S2, taking the thick end face of the bamboo chopsticks as an identifying datum plane, and identifying orientation of one side of four sides in the datum plane in accordance with a condition A as the orientation of the green face / yellow face, wherein the condition A is that the vascular bundle density is higher if it closer to the side. The full automatic laser engraving method of the bamboo chopsticks is simple to realize, and high in identifying rate of the green face / yellow face; the automatic laser engraving method can basically reach 100%.

Description

technical field [0001] The invention belongs to the technical field of bamboo chopsticks processing, and relates to the technology of how to realize computer automatic laser engraving on green / yellow noodles of bamboo chopsticks. Background technique [0002] In order to decorate chopsticks or add trademarks on chopsticks, the more traditional way is to print logos or decorative patterns on one or four sides of the thick ends of chopsticks, or paste stickers with logos or decorative patterns. However, the logo or pattern printed or pasted on the chopsticks in this relatively traditional way is easy to wear or fall off. The laser engraving method is more stable than the traditional printing method. [0003] Common household bamboo chopsticks are generally made of bamboo material cut into square bamboo strips and then further processed. The thin end is used for picking and sharpening. The cross-section is close to a circle. processing, retaining the basic square cross-sectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/362B23K26/03B23K26/70
CPCB23K26/03B23K26/361B23K26/702
Inventor 郑承烈胡培武吴永文吴德良
Owner ZHEJIANG SHUANGQIANG BAMBOO & WOOD CO LTD