阅读说明：本技术 3d打印机的嫁接定位系统及嫁接方法 (Grafting positioning system and grafting method of 3D printer ) 是由 刘建业 毛丽 于 2020-05-29 设计创作，主要内容包括：本发明提供一种3D打印机的嫁接定位系统及嫁接方法,包括：切片软件系统,切片软件系统与工控机通信连接,切片软件系统包括可导入嫁接件数字模型的打印成型模拟平台,打印成型模拟平台具有第一坐标系以获取嫁接件数字模型的虚拟坐标信息；光源装置,光源装置布置在打印基准平台的上方；相机装置,相机装置布置在粉料成型腔的上方；图像处理系统,图像处理系统具有与第一坐标系相对应的第二坐标系并且分别与工控机、相机装置通信连接,以获取嫁接基板的实际坐标信息并且经工控机将实际坐标信息传输至切片软件系统；扫描装置,扫描装置布置在粉料成型腔的上方。本发明能够自动修正嫁接打印的位置,保证嫁接打印的质量。(The invention provides a grafting positioning system and a grafting method of a 3D printer, which comprise the following steps: the slicing software system is in communication connection with the industrial personal computer and comprises a printing and forming simulation platform capable of leading in the digital model of the grafting number, and the printing and forming simulation platform is provided with a first coordinate system to obtain virtual coordinate information of the digital model of the grafting number; a light source device arranged above the printing reference platform; the camera device is arranged above the powder forming cavity; the image processing system is provided with a second coordinate system corresponding to the first coordinate system and is respectively in communication connection with the industrial personal computer and the camera device so as to obtain actual coordinate information of the grafting substrate and transmit the actual coordinate information to the slicing software system through the industrial personal computer; and the scanning device is arranged above the powder forming cavity. The invention can automatically correct the position of grafting printing and ensure the quality of grafting printing.)

1. The utility model provides a grafting positioning system of 3D printer, the 3D printer includes industrial computer (2) and printing reference platform (1), offers on printing reference platform (1) to arrange side by side, and the equal powder supply chamber (11) and powder one-tenth die cavity (12) of opening up along printing reference platform (1) length direction, is equipped with the liftable in powder one-tenth die cavity (12) and bears the forming substrate of product, is equipped with the grafting base plate on the forming substrate, is equipped with the grafting base on the grafting base plate, a serial communication port, grafting positioning system includes:

The slicing software system (04) is in communication connection with the industrial personal computer (2), the slicing software system (04) comprises a printing and forming simulation platform capable of leading in the digital model of the grafted number, the size of the cross section of the printing and forming simulation platform, which is vertical to the height direction, is equal to the size of the cross section of the powder forming cavity (12), which is vertical to the height direction, and the printing and forming simulation platform is provided with a first coordinate system so as to obtain the virtual coordinate information of the digital model of the grafted number;

the light source device (01), the light source device (01) is arranged above the printing reference platform (1) to project light beams to the powder forming cavity (12);

the camera device (02) is arranged above the powder forming cavity (12) to acquire an optical image at the powder forming cavity (12);

the image processing system (03) is provided with a second coordinate system corresponding to the first coordinate system and is respectively in communication connection with the industrial personal computer (2) and the camera device (02) so as to acquire actual coordinate information of the grafted substrate and transmit the actual coordinate information to the slicing software system (04) through the industrial personal computer (2);

the scanning device (05), the scanning device (05) is arranged above the powder forming cavity (12) to scan the profile of the grafting base;

According to the position offset of the virtual coordinate information of the digital model of the grafting number relative to the actual coordinate information of the grafting base plate, the slicing software system (04) automatically corrects the virtual coordinate information of the digital model of the grafting number so that the virtual coordinate information of the digital model of the grafting number is matched with the actual coordinate information of the grafting base plate.

2. The grafting positioning system of 3D printer of claim 1, wherein: the light source device (01) comprises a mounting frame (011) and a light emitter (012), wherein the mounting frame (011) is arranged between the camera device (02) and the printing reference platform (1), a transparent reflector (013) is arranged in the mounting frame (011), and the light emitter (012) is arranged on one side of the mounting frame (011).

3. The grafting positioning system of 3D printer of claim 1, wherein: the camera device (02) comprises a closed circuit television camera (021), and the closed circuit television camera (021) is aligned downwards to form the substrate.

4. The grafting positioning system of 3D printer of claim 1, wherein: the camera device (02) comprises a CCD image sensor.

5. The grafting positioning system of 3D printer of claim 1, wherein: the scanning device (05) is a red light scanner.

6. The grafting positioning system of 3D printer of claim 1, wherein: the slicing software system (04) is magics software.

7. Grafting positioning system of a 3D printer according to claim 1, characterized in that: the size of the cross section of the printing and molding simulation platform perpendicular to the height direction and the size of the cross section of the powder molding cavity (12) perpendicular to the height direction are both 280mm multiplied by 280 mm.

8. An grafting method using the grafting localization system of any one of claims 1 to 7, wherein: the method comprises the following steps:

s1, establishing a first coordinate system on the printing and molding simulation platform, guiding the digital model of the grafting number into the printing and molding simulation platform, and acquiring virtual coordinate information of the digital model of the grafting number based on the first coordinate system;

s2, shooting an optical image at the powder forming cavity (12) through a camera device (02), acquiring an image signal corresponding to the optical image through an image processing system (03) and converting the image signal into a digital signal, establishing a second coordinate system corresponding to the first coordinate system on the image processing system (03), acquiring actual coordinate information of the grafting base based on the second coordinate system, and transmitting the actual coordinate information to a slicing software system (04) through an industrial personal computer (2);

S3, comparing the actual coordinate information with the virtual coordinate information by the slicing software system (04), and calculating the position offset of the virtual coordinate information relative to the actual coordinate information;

s4, the slicing software system (04) automatically adjusts the virtual coordinate information of the digital model of the grafted number based on the second coordinate system according to the position offset, and finally the virtual coordinate information of the digital model of the grafted number is matched with the actual coordinate information of the grafted substrate;

and S5, scanning the grafting base by the scanning device (05) to confirm that the grafting light is correct.

Technical Field

The invention relates to the technical field of 3D printing, in particular to a grafting positioning system and a grafting method of a 3D printer.

Background

The mold industry often needs to print grafted products, and the grafting is to continuously graft and print other structures on the original workpiece. In order to realize the normal printing of the grafted product, the outlines of the original workpieces are butted. According to the traditional light focusing method, the outline of a part is scanned through red light, the position is distinguished through naked eyes, and the coordinate of grafting data is adjusted in a micro-scale mode, so that the efficiency is very low, and the accurate determination of the coordinate position is difficult to achieve.

Disclosure of Invention

In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to provide a grafting positioning system and a grafting method for a 3D printer, which can automatically correct the position of grafting printing and ensure the quality of grafting printing.

In order to solve the technical problem, the invention provides a grafting positioning system of a 3D printer, the 3D printer comprises an industrial personal computer and a printing reference platform, the printing reference platform is provided with a powder supply cavity and a powder forming cavity which are arranged side by side along the length direction of the printing reference platform and have upward openings, a forming substrate which can be lifted and can bear a product is arranged in the powder forming cavity, a grafting substrate is arranged on the forming substrate, a grafting base is arranged on the grafting substrate, and the grafting positioning system comprises:

The slicing software system is in communication connection with the industrial personal computer and comprises a printing and forming simulation platform capable of leading in the digital model of the grafted number, the size of the cross section of the printing and forming simulation platform, which is vertical to the height direction, is equal to the size of the cross section of the powder forming cavity, which is vertical to the height direction, and the printing and forming simulation platform is provided with a first coordinate system so as to obtain the virtual coordinate information of the digital model of the grafted number;

the light source device is arranged above the printing reference platform to project light beams to the powder forming cavity;

the camera device is arranged above the powder forming cavity to obtain an optical image at the powder forming cavity;

the image processing system is provided with a second coordinate system corresponding to the first coordinate system and is respectively in communication connection with the industrial personal computer and the camera device so as to obtain actual coordinate information of the grafting substrate and transmit the actual coordinate information to the slicing software system through the industrial personal computer;

the scanning device is arranged above the powder forming cavity to scan the outline of the grafting base;

and automatically correcting the virtual coordinate information of the digital model of the grafted number by the slicing software system according to the position offset of the virtual coordinate information of the digital model of the grafted number relative to the actual coordinate information of the grafting base plate, so that the virtual coordinate information of the digital model of the grafted number is matched with the actual coordinate information of the grafting base plate.

Preferably, the light source device includes a mounting frame disposed between the camera device and the printing reference platform, and a light emitter disposed at one side of the mounting frame.

Preferably, the camera device comprises a closed circuit television camera, which is aligned downwards to the forming substrate.

Preferably, the camera device comprises a CCD image sensor.

Preferably, the scanning device is a red light scanner.

Preferably, the slicing software system is magics software.

Preferably, the size of the cross section of the printing and molding simulation platform perpendicular to the height direction and the size of the cross section of the powder molding cavity perpendicular to the height direction are both 280mm × 280 mm.

The invention also provides a grafting method adopting the grafting positioning system, which comprises the following steps:

s1, establishing a first coordinate system on the printing and molding simulation platform, guiding the digital model of the grafting number into the printing and molding simulation platform, and acquiring virtual coordinate information of the digital model of the grafting number based on the first coordinate system;

s2, shooting an optical image at the powder forming cavity through a camera device, acquiring an image signal corresponding to the optical image through an image processing system, converting the image signal into a digital signal, establishing a second coordinate system corresponding to the first coordinate system on the image processing system, acquiring actual coordinate information of the grafting base based on the second coordinate system, and transmitting the actual coordinate information to a slicing software system through an industrial personal computer;

S3, comparing the actual coordinate information with the virtual coordinate information by the slicing software system, and calculating the position offset of the virtual coordinate information relative to the actual coordinate information;

s4, the slicing software system automatically adjusts the virtual coordinate information of the digital model of the grafted number based on the second coordinate system according to the position offset, and finally the virtual coordinate information of the digital model of the grafted number is matched with the actual coordinate information of the grafted substrate;

and S5, scanning the grafting base by the scanning device, and confirming that the grafting light is correct.

As described above, the grafting positioning system and the grafting method of the 3D printer of the present invention have the following beneficial effects: the printing and forming simulation platform is provided with a first coordinate system to obtain virtual coordinate information of a grafting piece digital model, the image processing system is provided with a second coordinate system corresponding to the first coordinate system to obtain actual coordinate information of a grafting base plate and transmit the actual coordinate information to the slicing software system through the industrial personal computer, and the slicing software system automatically corrects the virtual coordinate information of the grafting piece digital model according to the position offset of the virtual coordinate information of the grafting piece digital model relative to the actual coordinate information of the grafting base plate so that the virtual coordinate information of the grafting piece digital model is matched with the actual coordinate information of the grafting base plate. Therefore, the grafting positioning system of the 3D printer can automatically correct the position of grafting printing, and ensure the quality of grafting printing.

Drawings

FIG. 1 shows a schematic diagram of a grafting positioning system of a 3D printer according to the present invention;

FIG. 2 is a schematic view of a light source device and a camera device;

figure 3 shows a schematic view of a printing reference platform.

Description of the element reference numerals

1 printing reference platform

11 powder supply chamber

12 powder forming cavity

2 industrial control computer

01 light source device

011 installation frame

012 light emitter

02 camera device

021 closed circuit television camera

03 image processing system

04 slicing software system

05 scanning device

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in fig. 1, 2 and 3, the invention provides a grafting positioning system of a 3D printer, the 3D printer includes an industrial personal computer 2 and a printing reference platform 1, the printing reference platform 1 is provided with a powder supply cavity 11 and a powder forming cavity 12 which are arranged side by side along the length direction of the printing reference platform 1 and have upward openings, a forming substrate which can be lifted and can bear a product is arranged in the powder forming cavity 12, the forming substrate is provided with a grafting substrate, the grafting substrate is provided with a grafting base, the grafting positioning system includes:

the slicing software system 04 is in communication connection with the industrial personal computer 2, the slicing software system 04 comprises a printing and forming simulation platform into which the digital model of the grafting piece can be introduced, the size of the cross section of the printing and forming simulation platform, which is vertical to the height direction, is equal to the size of the cross section of the powder forming cavity 12, which is vertical to the height direction, and the printing and forming simulation platform is provided with a first coordinate system so as to obtain the virtual coordinate information of the digital model of the grafting piece;

the light source device 01 is arranged above the printing reference platform 1 to project light beams to the powder forming cavity 12;

the camera device 02 is arranged above the powder forming cavity 12 to obtain an optical image at the powder forming cavity 12;

The image processing system 03 is provided with a second coordinate system corresponding to the first coordinate system and is in communication connection with the industrial personal computer 2 and the camera device 02 respectively so as to acquire actual coordinate information of the grafted substrate and transmit the actual coordinate information to the slicing software system 04 through the industrial personal computer 2;

the scanning device 05 is arranged above the powder forming cavity 12 to scan the outline of the grafting base;

according to the position offset of the virtual coordinate information of the digital model of the grafting number relative to the actual coordinate information of the grafting base plate, the slicing software system 04 automatically corrects the virtual coordinate information of the digital model of the grafting number so that the virtual coordinate information of the digital model of the grafting number is matched with the actual coordinate information of the grafting base plate.

In the present invention, the printing and forming simulation platform has a first coordinate system to obtain virtual coordinate information of the graft number digital model, the image processing system 03 has a second coordinate system corresponding to the first coordinate system to obtain actual coordinate information of the graft base plate and transmits the actual coordinate information to the slicing software system 04 through the industrial personal computer 2, and the slicing software system 04 automatically corrects the virtual coordinate information of the graft number digital model according to the position offset of the virtual coordinate information of the graft number digital model with respect to the actual coordinate information of the graft base plate so that the virtual coordinate information of the graft number digital model matches with the actual coordinate information of the graft base plate. Therefore, the grafting positioning system of the 3D printer can automatically correct the position of grafting printing, and ensure the quality of grafting printing.

As shown in fig. 2, in order to facilitate the above-mentioned camera device 02 to capture an optical image of a currently printed layer of a printed product, the above-mentioned light source device 01 includes a mounting frame 011 and a light emitter 012, the mounting frame 011 is disposed between the camera device 02 and the printing reference platform 1, a transparent mirror 013 is provided in the mounting frame 011, and the light emitter 012 is provided on one side of the mounting frame 011. The transparent mirror 013 is provided so as to prevent the light emitter 012 from being arranged between the camera apparatus 02 and the print reference platform 1, and so as to enable the light beam reflected at the powder molding chamber 12 to enter the camera apparatus 02 after passing through the transparent mirror 013.

Further, the camera device 02 includes a closed circuit television camera 021, and the closed circuit television camera 021 is aligned with the molding substrate downward. The camera device 02 includes a CCD image sensor.

Further, the scanning device 05 is a red light scanner.

Further, the slicing software system 04 is magics software. magics software is an existing 3D print-and-slice software.

Furthermore, the cross section size of the printing and molding simulation platform perpendicular to the height direction and the cross section size of the powder molding cavity 12 perpendicular to the height direction are both 280mm × 280 mm.

The invention also provides a grafting method adopting the grafting positioning system, which comprises the following steps:

s1, establishing a first coordinate system on the printing and molding simulation platform, guiding the digital model of the grafting number into the printing and molding simulation platform, and acquiring virtual coordinate information of the digital model of the grafting number based on the first coordinate system;

s2, shooting an optical image at the powder forming cavity 12 through the camera device 02, acquiring an image signal corresponding to the optical image through the image processing system 03, converting the image signal into a digital signal, establishing a second coordinate system corresponding to the first coordinate system on the image processing system 03, acquiring actual coordinate information of the grafting base based on the second coordinate system, and transmitting the actual coordinate information to the slicing software system 04 through the industrial personal computer 2;

s3, comparing the actual coordinate information with the virtual coordinate information by the slicing software system 04, and calculating the position offset of the virtual coordinate information relative to the actual coordinate information;

s4, the slicing software system 04 automatically adjusts the virtual coordinate information of the digital model of the grafted number based on the second coordinate system according to the position offset, and finally the virtual coordinate information of the digital model of the grafted number is matched with the actual coordinate information of the grafted substrate;

And S5, the scanning device 05 scans the grafting base to confirm that the grafting light is correct.

The grafting method can automatically correct the position of grafting printing and ensure the quality of grafting printing.

In conclusion, the grafting positioning system and the grafting method of the 3D printer can automatically correct the position of grafting printing and ensure the quality of grafting printing. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.