Printing method of flatbed printer based on visual positioning and registration

Abstract

The invention discloses a printing method of a flatbed printer based on visual positioning and registration, which comprises the following steps of: 1) setting a printing system, establishing a printing pattern template library in the printing system, and generating a printing pattern standard template; (2) the printing medium is flatly laid on a printing platform of a printer; 3) performing information acquisition on the printing medium through a visual system; (4) the collected information is transmitted to a printing system, the printing system compares and analyzes the collected information of the printing medium with a template of the printing medium in the printing system, and feature information of the printing medium is obtained; (5) the printer completes printing operation of the printing medium according to the printing command; according to the printing method, the problems that in the printing process, laying of the printing media is not standard, and layout sizes are different can be solved, rapid positioning, registration and printing operation of the printing media are achieved, the printing quality can be improved, the printing speed can be increased, and continuous printing operation of one or more printing media is achieved.

Description

Technical Field

[0001] The present invention relates to a printing method for a flatbed printer based on visual positioning and registration. Background Art

[0002] Digital printers are devices that complete printing of patterns, colors, etc. on media such as fabrics and fabrics through inkjet printing. The existing printer printing methods have relatively low intelligence and can only complete printing of fixed formats. They cannot adjust the position, angle, and deformation of the printed pattern according to the position and angle changes of the pattern to be printed and the non-rigid deformation of the fabric. Therefore, problems such as misalignment and inaccuracy of the printed pattern are likely to occur. Therefore, it is necessary to propose a printing method for a flatbed printer based on visual positioning and registration to solve the problems encountered in the use of existing printers. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a printing method for a flatbed printer based on visual positioning and registration that is suitable for use in printers, meets the printing requirements of single or multiple printing media, and realizes fast and accurate printing of printing media, and has practicality and wide application.

[0004] To solve the above problems, the present invention adopts the following technical solutions: A printing method for a flatbed printer based on visual positioning and registration, comprising the following steps: 1) Set up a printing system, establish a printing pattern template library in the printing system, and generate a standard printing pattern template; 2) Lay the printing medium to be printed flat on the printing platform of the printer; 3) Collect information of the printing medium through a vision system; 4) Transmit the collected information to the printing system, and the printing system compares and analyzes the information of the collected printing medium with the template of the printing medium in the printing system to obtain the characteristic information of the printing medium; 5) The printer completes the printing operation of the printing medium according to the printing command; 6) Printing ends; The implementation step order of step 1) and step 2) can be interchanged.

[0005] Preferably, the generation of the standard printing pattern template includes the following steps: a. Adjust the state of the printing medium sample on the printing platform to create a printing template; b. Collect information such as the contour, position, and coordinates of the printing medium sample in different states on the printing platform; c. Organize the corresponding information to generate a standard printing pattern template; d. Edit the standard template of the printed pattern to generate a printing program corresponding to the standard template of the printed pattern.

[0006] Preferably, in step 2), the laying of the printing medium needs to ensure flatness, and at the same time, the printing medium and the printing area are in the set area of the printing platform.

[0007] Preferably, in step 3), the vision system is a area array camera or a line scan camera, preferably an area array camera, and the vision system obtains the picture information of the corresponding medium by taking pictures.

[0008] Preferably, in step 4), the printing system compares the picture information of the medium with the standard template of the printed pattern. The printing system selects the standard template of the printed pattern that is closest to the picture information, and then executes the printing program corresponding to the standard template of the printed pattern.

[0009] Preferably, in step 4), the printing system compares the picture information of the medium with the standard template of the printed pattern. According to the characteristic information of the printing medium, the image to be printed is scaled, corrected and other transformations are performed. Then, the standard template of the printed pattern is registered with the image of the printing medium, and new image information and commands matching the printing medium are generated.

[0010] Preferably, in step 5), the printer completes the printing operation of the printing medium under the action of a three-dimensional moving component, a printer head, a printing nozzle, an ink supply component, a scraping component, etc.

[0011] Preferably, a printing method of a flatbed printer based on visual positioning and registration includes steps 2) to 6) described in claim 1.

[0012] A method for generating a standard template of a printed pattern includes steps a to c described in claim 2.

[0013] Preferably, a flatbed printer based on visual positioning and registration includes a printing platform, a vision system, a printer head, a printing nozzle, an X-direction moving component, a Y-direction moving component, a Z-direction moving component, a scraping component, an ink supply component and a printing system. The X-direction moving component, the Y-direction moving component and the Z-direction moving component form a three-dimensional moving component; the X-direction moving component and the Z-direction moving component are installed on the frame, the Y-direction moving component is installed at the upper end of the Z-direction moving component, and the X-direction moving component is arranged at the upper end of the Y-direction moving component; The X-direction moving component includes a cross beam and an X-direction motor. The printer head is installed on the cross beam, and the X-direction motor drives the printer head to move in the X direction along the cross beam; The Y-direction moving component includes a Y-direction motor, a Y-direction lead screw and a platform support; the Y-direction motor drives the platform support to move in the Y direction through the Y-direction lead screw; The Z-direction moving component includes a cross plate, a Z-direction lead screw, and a Z-direction motor. The Z-direction motor drives the cross plate to move in the Z direction through the Z-direction lead screw.

[0014] The beneficial effects of the present invention are as follows: By using this printing method, the usage requirements of the printer are met. It can automatically collect the information of the printing medium, perform operations such as comparison, calibration, and registration of picture information, and achieve automatic and precise printing of the printing medium. It can overcome problems such as non-standard placement and size changes of the printing medium during printing, and achieve unobstructed printing operations. At the same time, the printer set by this method realizes independent and continuous printing operations of single printing media with different sizes of layouts, meeting the printing needs in different situations, and it has practicality and wide usage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art, but it is not a limitation to the protection scope of the present invention.

[0016] Figure 1 It is a schematic diagram of the steps of the present invention; Figure 2 It is a schematic diagram of the printer structure of the present invention; Figure 3 It is a schematic diagram of the non-structural part of the printer of the present invention.

[0017] Among them, 1. Vision system, 2. Printer head, 3. Print nozzle, 4. Ink supply component, 5. Frame, 6. Operating table, 7. Printing platform, 8. Cross beam, 9. X-direction motor, 10. Y-direction motor, 11. Y-direction lead screw, 12. Platform support, 13. Guide rail, 14. Bracket, 15. Cross plate, 16. Z-direction lead screw, 17. Synchronous pulley, 18. Z-direction motor. SPECIFIC EMBODIMENTS

[0018] As Figure 1 shown, Embodiment 1: A printing method for a flatbed printer based on vision positioning and registration includes the following steps: 1) Set up a printing system, establish a printing pattern template library in the printing system, and generate a standard printing pattern template; The generation of the standard printing pattern template includes the following steps: a. Adjust the state of the printing medium sample on the printing platform to create a printing template; b. Collect information such as the contour, position, and coordinates of the printing medium sample in different states on the printing platform; c. Organize the corresponding information to generate a standard printing pattern template; d. Edit the standard template of the printed pattern to generate a printing program corresponding to the standard template of the printed pattern.

[0019] 2) Lay the printing medium to be printed flat on the printing platform of the printer. The laying of the printing medium needs to ensure flatness. At the same time, the printing medium and the printing area are within the set area of the printing platform. 3) Collect information on the printing medium through a vision system. The vision system obtains picture information of the corresponding medium by taking pictures. 4) Transmit the collected information to the printing system. Compare and analyze the collected printing medium information with the standard template of the printed pattern in the printing system, and obtain the next printing command. Specifically: The printing system compares the picture information of the medium with the standard template of the printed pattern. The printing system selects the standard template of the printed pattern that is closest to the picture information, and then executes the corresponding printing program of the standard template of the printed pattern. 5) The printer completes the printing operation of the printing medium according to the printing command. Specifically: The printer completes the printing operation of the printing medium under the action of a three-dimensional moving component, a printer head, a printing nozzle, an ink supply component, a scraping component, etc. 6) The printing is completed. Embodiment

[0020] A printing method for a flatbed printer based on visual positioning and registration includes the following steps: 1) Set up a printing system, establish a printed pattern template library in the printing system, and generate a standard template of the printed pattern. The generation of the standard template of the printed pattern includes the following steps: a. Adjust the state of the printing medium sample on the printing platform to create a printing template. b. Collect information such as the contour, position, and coordinates of the printing medium sample in different states on the printing platform. c. Organize the corresponding information to generate a standard template of the printed pattern. 2) Lay the printing medium to be printed flat on the printing platform of the printer. The laying of the printing medium needs to ensure flatness. At the same time, the printing medium and the printing area are within the set area of the printing platform. 3) Collect information on the printing medium through a vision system. The vision system obtains picture information of the corresponding medium by taking pictures. 4) Transmit the collected information to the printing system. Compare and analyze the collected printing medium information with the standard template of the printed pattern in the printing system, and obtain the next printing command. Specifically: The printing system compares the picture information of the medium with the standard template of the printed pattern. According to the characteristic information of the printing medium, perform transformations such as scaling and correction on the image to be printed, and then register the standard template of the printed pattern with the printing medium image, and generate new image information and commands that match the printing medium.

[0021] 5) The printer completes the printing operation on the printing medium according to the printing command. Specifically, the printer completes the printing operation on the printing medium under the action of a three-dimensional moving component, a printer head, a printing nozzle, an ink supply component, a scraping component, etc.; 6) Printing is completed.

[0022] Further, in the above two embodiments, the vision system is an area array camera or a line scan camera, and an area array camera is preferred.

[0023] Embodiment 3, on the premise that the printing system is established and the standard template of the printing pattern already exists; A printing method for a flatbed printer based on visual positioning and registration includes the following steps: 1) Lay the printing medium flat on the printing platform of the printer; 2) Collect information on the printing medium through the vision system; 3) Transmit the collected information to the printing system, compare and analyze the collected printing medium information with the standard template of the printing pattern in the printing system, and obtain the next printing command; 4) The printer completes the printing operation on the printing medium according to the printing command; 5) Printing is completed; 6) Loop steps 1) to 5). Embodiment

[0024] A printing method for a flatbed printer based on visual positioning and registration includes the following steps: 1) Set the printing system, establish a printing pattern template library in the printing system, and generate a standard template of the printing pattern; 2) Lay the printing medium flat on the printing platform of the printer; 3) Collect information on the printing medium through the vision system; 4) Compare the collected information with the templates in the template library, adjust the position, rotation angle and deformation of the standard template pattern, register the standard template pattern with the printing medium, and then the printing system generates a printing command; 5) The printer completes the printing operation on the printing medium according to the printing command; 6) Printing is completed.

[0025] A printing method for a flatbed printer based on visual positioning and registration includes the following steps: 1) Lay the printing medium to be printed flat on the printing platform of the printer; 2) Set the printing system, establish a printing pattern template library in the printing system, and generate a standard template of the printing pattern; 3) Collect information on the printing medium through the vision system; 4) Transmit the collected information to the printing system. The printing system compares and analyzes the information of the printing medium collected with the template of the printing medium in the printing system to obtain the characteristic information of the printing medium; 5) The printer completes the printing operation of the printing medium according to the printing command; 6) Printing is completed.

[0026] Furthermore, a method for generating a standard template for printing patterns includes the following steps: a. Adjust the state of the printing medium on the printing platform to create a printing template; b. Collect information such as the contour, position, coordinates, etc. of the printing medium in different states on the printing platform; c. Sort out the corresponding information, select and generate multiple standard templates for printing patterns; d. Generate a corresponding printing program according to the standard template for printing patterns.

[0027] This template is mainly used for subsequent comparison of printing media to quickly achieve printing operations; by implementing the generated printing program for printing the printing medium, further planning of the printing path is not required, and the accuracy of printing can also be guaranteed.

[0028] Furthermore, a method for generating a standard template for printing patterns includes the following steps: a. Adjust the state of the printing medium on the printing platform to create a printing template; b. Collect information such as the contour, position, coordinates, etc. of the printing medium in different states on the printing platform; c. Sort out the corresponding information, select and generate a standard template for a printing pattern.

[0029] This template is mainly used for subsequent correction, calibration, scaling, etc. of the printing medium, facilitating subsequent planning of the printing path, so as to quickly achieve printing operations and achieve the accuracy of printing.

[0030] The above two methods for generating a standard template for printing patterns effectively improve the printing efficiency and accuracy, and improve the printing quality.

[0031] Refer to Figures 2 to 3 As shown in a flatbed printer based on vision positioning and registration, including a printing platform 7, a vision system 1, a printer head 2, a printing nozzle 3, an X-direction moving component, a Y-direction moving component, a Z-direction moving component, a scraping component (not shown), an ink supply component 4, a printing system, and an operation table 6. The X-direction moving component, the Y-direction moving component, and the Z-direction moving component form a three-dimensional moving component; the X-direction moving component and the Z-direction moving component are installed on a frame 5, the Y-direction moving component is installed at the upper end of the Z-direction moving component, and the X-direction moving component is arranged at the upper end of the Y-direction moving component; The X-direction moving component includes a cross beam 8 and an X-direction motor 9. The printer head is installed on the cross beam, and the X-direction motor drives the printer head to move in the X direction along the cross beam through a synchronous belt; The Y-direction moving component includes a Y-direction motor 10, a Y-direction lead screw 11 and a platform support 12; the Y-direction lead screw is installed on the Y-direction motor, one end of the Y-direction lead screw is connected to the table support, a guide rail 13 is provided inside the bracket 14, the table support is connected to the guide rail, a printing platform 7 is installed on the table support, and the Y-direction motor drives the platform support and the printing platform to move in the Y direction along the guide rail through the Y-direction lead screw; The Z-direction moving component includes a cross plate 15, a Z-direction lead screw 16 and a Z-direction motor 18. The Z-direction motor is installed on the frame. The cross plate is threadedly connected to the Z-direction lead screw, and the bracket is installed on the cross plate. A synchronous pulley 17 is installed at the bottom of the Z-direction lead screw, and the Z-direction motor is connected to the synchronous pulley through a synchronous belt; the Z-direction motor drives the cross plate to move in the Z direction through the synchronous belt, the synchronous pulley and the Z-direction lead screw, so as to realize the lifting of the bracket.

[0032] Further, the operating table is installed on the frame, and control buttons are provided on the operating table.

[0033] Further, the printing steps of a flatbed printer based on vision positioning and registration are as follows: lay the printing medium flat on the printing table, and then the area array camera takes pictures of the printing medium to complete the acquisition of the relative information between the printing table and the printing medium. Subsequently, the collected pictures and other information are transmitted to the printing system, and the printing system compares the collected information with the printing pattern standard template; when there is only one printing pattern standard template in the printing system, perform operations such as scanning, scaling, and correction on the picture, and then generate a printing path. Subsequently, the printing system controls the printer to work; when there are multiple printing pattern standard templates generated in the printing system, compare the collected picture information with the printing pattern standard template. The printing system automatically selects the most similar printing pattern standard template and executes the corresponding printing program of the template. Subsequently, the printer works according to the instructions.

[0034] The Z-axis motor drives the Z-axis lead screw to rotate through the synchronous belt and the synchronous pulley. The rotation of the Z-axis lead screw drives the cross plate and the Y-direction moving component to lift, so as to adjust the distance between the printing platform and the printing medium and the printing nozzle; subsequently, the X-direction moving component and the Y-direction moving component act. The X-direction motor drives the printing nozzle to move in the X direction. During this process, the Y-direction motor drives the platform support and the printing platform to move through the Y-direction lead screw. Under the action of the X-direction moving component and the Y-direction moving component, the printing nozzle completes the printing operation on the printing medium.

[0035] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of without creative efforts shall be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A printing method for a flatbed printer based on visual positioning and registration, characterized in that: It includes the following steps: 1) Set up a printing system, establish a printing pattern template library in the printing system, and generate a standard printing pattern template; 2) Lay the printing medium to be printed flat on the printing platform of the printer; 3) Collect information of the printing medium through a vision system; 4) Transmit the collected information to the printing system. The printing system compares and analyzes the information of the collected printing medium with the template of the printing medium in the printing system to obtain the characteristic information of the printing medium; 5) The printer completes the printing operation of the printing medium according to the printing command; 6) The printing ends; The implementation order of step 1) and step 2) can be interchanged.

2. The printing method of a flatbed printer based on visual positioning and registration according to claim 1, characterized in that: The generation of the standard printing pattern template includes the following steps: a. Adjust the state of the printing medium sample on the printing platform to create a printing template; b. Collect information such as the contour, position, and coordinates of the printing medium sample in different states on the printing platform; c. Organize the corresponding information to generate a standard printing pattern template; d. Edit the standard printing pattern template to generate a printing program corresponding to the standard printing pattern template.

3. A printing method for a flatbed printer based on visual positioning and registration according to claim 1, characterized in that: In step 2), the laying of the printing medium needs to ensure flatness, and at the same time, the printing medium and the printing area are within the set area of the printing platform.

4. A printing method for a flatbed printer based on visual positioning and registration according to claim 1, characterized in that: In step 3), the vision system is an area array camera or a line scan camera, preferably an area array camera. The vision system obtains the picture information of the corresponding medium by taking pictures.

5. A printing method for a flatbed printer based on visual positioning and registration according to claim 1, characterized in that: In step 4), the printing system compares the picture information of the medium with the standard printing pattern template. The printing system selects the standard printing pattern template that is closest to the picture information, and then executes the printing program corresponding to the standard printing pattern template.

6. A printing method for a flatbed printer based on visual positioning and registration according to claim 1, characterized in that: In step 4), the printing system compares the picture information of the medium with the standard printing pattern template. According to the characteristic information of the printing medium, transformations such as scaling and correction are performed on the image to be printed, and then the standard printing pattern template is registered with the printing medium image, and new image information and commands matching the printing medium are generated.

7. A printing method for a flatbed printer based on visual positioning and registration according to claim 1, characterized in that: In step 5), the printer completes the printing operation of the printing medium under the action of a three-dimensional moving component, a printer head, a printing nozzle, an ink supply component, a scraping component, etc.

8. A printing method for a flatbed printer based on visual positioning and registration, characterized in that: It includes steps 2) to 6) described in claim 1.

9. A method for generating a standard template of a printed pattern, characterized in that: It includes steps a to c described in claim 2.

10. A flatbed printer based on visual positioning and registration, characterized in that: It includes a printing platform, a vision system, a printer head, a printing nozzle, an X-direction moving component, a Y-direction moving component, a Z-direction moving component, a scraping component, an ink supply component, and a printing system. The X-direction moving component, the Y-direction moving component, and the Z-direction moving component form a three-dimensional moving component; the X-direction moving component and the Z-direction moving component are installed on the frame, the Y-direction moving component is installed at the upper end of the Z-direction moving component, and the X-direction moving component is arranged at the upper end of the Y-direction moving component; The X-direction moving component includes a cross beam and an X-direction motor. The printer head is installed on the cross beam, and the X-direction motor drives the printer head to move in the X direction along the cross beam; The Y-direction moving component includes a Y-direction motor, a Y-direction lead screw, and a platform support; the Y-direction motor drives the platform support to move in the Y direction through the Y-direction lead screw; The Z-direction moving component includes a cross plate, a Z-direction lead screw, and a Z-direction motor. The Z-direction motor drives the cross plate to move in the Z direction through the Z-direction lead screw.

Images