Method for position confirmation and accurate jet printing of large-area planar object

Abstract

The invention discloses a method for position confirmation and accurate jet printing of a large-area plane object, and relates to the technical field of object spraying. A laser sensor, a visual sensor and other systems are used for detecting the position and angle of the steel plate in real time. The equipment can quickly capture the edge or feature point of the steel plate, compares the edge or feature point with a preset coordinate system, and automatically calculates the accurate position and rotation angle of the steel plate relative to the jet printing device. Based on the positioning information system, a precise stepping motor or servo motor is matched to ensure that the jet printing point is accurately matched with the preset position on the steel plate. The automatic degree of the jet printing process is improved, the dependence on manual adjustment is reduced, the jet printing quality and the production efficiency are remarkably improved, the jet printing precision and efficiency are improved, the subsequent correction workload is reduced, and the quality control level of the whole production process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of object spraying, and in particular to a method for position confirmation and precise spraying of a large-area planar object. Background Art

[0002] A large flat object such as a steel plate. After the steel plate is transported to the printing position, the position coordinates are uncertain. It is usually necessary to manually measure the actual position of the steel plate relative to the printing device, and then input the coordinate information into the control program of the printing system. And if the steel plate rotates during transportation or loading and unloading, there will be a certain angle difference between its surface and the preset printing coordinate system. This will cause the actual position of the printed pattern or text on the steel plate to be inconsistent with the pre-spraying position, causing the printed pattern to be skewed, affecting the appearance quality and use function of the product. In order to solve this problem, it is necessary to manually adjust the angle of the nozzle to make it parallel to the steel plate, or adjust the angle of the steel plate according to the printing axis. However, throughout the process, the manual measurement and adjustment method not only relies on the skills and experience of the workers, but is also inefficient and easily introduces human errors, affecting the consistency and efficiency of production.

[0003] In summary, the present invention designs a method for position confirmation and precise printing of a large-area planar object. Summary of the invention

[0004] The whole printing process in the prior art often takes a long time, especially when processing a large number of steel plates. In addition, frequent manual intervention reduces the continuity and stability of the production line, which is not conducive to large-scale and efficient production, and the low degree of automation. The purpose of the present invention is to provide a method for position confirmation and precise printing of large-area planar objects.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solution: a method for position confirmation and accurate printing of a large-area planar object comprises the following steps:

[0006] 1. Position detection:

[0007] (1.1) The object is static and the edge patrol method is used: a high-precision laser sensor is installed on the printing device. After the steel plate stops in the printing area, the laser sensor is driven by the axis control to detect the edge of the steel plate to obtain the position coordinates;

[0008] (1.2) Dynamic object line scanning: Use a visual sensor installed just above the conveyor line. When the steel plate passes under the visual sensor, it accurately captures the edge, feature points or specific marks of the steel plate, and cooperates with the encoder to obtain the position information of the entire steel plate;

[0009] 2. Steel plate rotation information processing: Receive the real-time position information from the sensor and use the algorithm to calculate the rotation angle compensation value required for the printed pattern; based on the calculated compensation value, the pre-processing system adjusts the original printed pattern to ensure that the pattern can be correctly aligned on the steel plate;

[0010] 3. Use precision stepper motor or servo motor to ensure that the printing point accurately matches the predetermined position on the steel plate;

[0011] 4. Develop an intuitive and easy-to-use human-machine interface that allows operators to monitor system status, adjust parameter settings, and receive fault alarm information;

[0012] 5. The system has a built-in feedback mechanism to continuously monitor the printing quality, fine-tune the algorithm parameters according to the actual results, and optimize the printing accuracy and efficiency.

[0013] Preferably, the sensors in step 1 are installed according to a predetermined layout, and through precise calibration, the physical position information is accurately converted into a digital signal, thereby improving the accuracy.

[0014] A device for confirming and accurately printing the position of a large-area flat object comprises a first ground rail, a cross-beam riser, a ground rail drag chain slot, a first induction block, a second induction block, a second ground rail, a ground rail line slot bracket, an electric control cabinet, a first ground rail accordion cover connector, a second ground rail accordion cover connector, a first ground rail base frame, a second ground rail base frame, a third ground rail base frame, a fourth ground rail base frame, a ground anchor plate and a bracket, wherein the first ground rail and the second ground rail are arranged in parallel, one end of the first ground rail and the second ground rail are connected by a cross-beam riser, a ground rail drag chain slot is arranged on the outer side of one end of the cross-beam riser and the second ground rail, and a ground anchor plate is arranged on the ground rail line slot bracket. The rail drag chain groove is provided with a drag chain, the first induction block and the second induction block are arranged at the end of the second ground rail, and an electric control cabinet is also arranged near one end of the second ground rail. The first ground rail chassis is arranged on the middle left side of the first ground rail, the second ground rail chassis is arranged on the middle left side of the second ground rail, the third ground rail chassis is arranged on the right end of the first ground rail, and the fourth ground rail chassis is arranged on the right end of the second ground rail. A bracket is arranged between the first ground rail and the second ground rail, the first ground rail is covered with a first ground rail accordion cover connector, the second ground rail is provided with a second ground rail accordion cover connector, and the bottom of the first ground rail and the second ground rail are supported by anchor plates.

[0015] Beneficial effects of the present invention: The present invention uses laser sensors, visual sensors and other systems to detect the position and angle of the steel plate in real time. These devices can quickly capture the edge or feature point of the steel plate, and compare it with the preset coordinate system, and automatically calculate the precise position and rotation angle of the steel plate relative to the printing device. Based on the above positioning information system, in conjunction with a precision stepper motor or servo motor, it is ensured that the printing point accurately matches the predetermined position on the steel plate. The degree of automation of the printing process is improved, the dependence on manual adjustment is reduced, the printing quality and production efficiency are significantly improved, the accuracy and efficiency of printing are improved, and the workload required for subsequent corrections is reduced, thereby improving the quality control level of the overall production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a top view of the present invention. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] Reference Figure 1-2 , this specific implementation adopts the following technical solution: A method for confirming the position of a large-area planar object and accurately printing it includes the following steps:

[0021] 1. Position detection:

[0022] (1.1) Edge patrol method (static object): Use a high-precision laser sensor installed on the printing device. After the steel plate stops in the printing area, the laser sensor is driven by the axis control to detect the edge of the steel plate to obtain the position coordinates;

[0023] (1.2) Line scanning (dynamic objects): Use a visual sensor (such as an industrial camera) installed just above the conveyor line. When the steel plate passes under the visual sensor, it can accurately capture the edge, feature points or specific marks of the steel plate. At the same time, with the encoder, it can fully obtain the position information of the entire steel plate;

[0024] 2. Steel plate rotation information processing: Receive the real-time position information from the sensor, and use the algorithm to calculate the rotation angle compensation value required for the printing pattern; based on the calculated compensation value, the pre-processing system adjusts the original printing pattern, including but not limited to rotation, scaling and other transformations, to ensure that the pattern can be correctly aligned on the steel plate;

[0025] 3. Use precision stepper motor or servo motor to ensure that the printing point accurately matches the predetermined position on the steel plate;

[0026] 4. Develop an intuitive and easy-to-use human-machine interface that allows operators to monitor system status, adjust parameter settings, and receive fault alarm information;

[0027] 5. The system has a built-in feedback mechanism to continuously monitor the printing quality, fine-tune the algorithm parameters according to the actual results, and optimize the printing accuracy and efficiency.

[0028] A device for confirming and accurately printing the position of a large-area flat object, comprising a first ground rail 1, a cross-beam riser 2, a ground rail drag chain slot 3, a first induction block 4, a second induction block 5, a second ground rail 6, a ground rail line slot bracket 7, an electric control cabinet 8, a first ground rail accordion cover connector 9, a second ground rail accordion cover connector 10, a first ground rail base frame 12, a second ground rail base frame 13, a third ground rail base frame 14, a fourth ground rail base frame 15, a ground anchor plate 16 and a bracket 17. The first ground rail 1 and the second ground rail 6 are arranged in parallel, one end of the first ground rail 1 and the second ground rail 6 are connected by a cross-beam riser 2, the outer side of the cross-beam riser 2 and one end of the second ground rail 6 is provided with a ground rail drag chain slot 3, and the ground rail line slot bracket 7 is provided with a The floor rail drag chain groove 3 is provided with a drag chain, the first induction block 4 and the second induction block 5 are arranged at the end of the second floor rail 6, and an electric control cabinet 8 is also arranged near one end of the second floor rail 6. A first floor rail base frame 12 is arranged on the middle left side of the first floor rail 1, and a second floor rail base frame 13 is arranged on the middle left side of the second floor rail 6. A third floor rail base frame 14 is arranged on the right end of the first floor rail 1, and a fourth floor rail base frame 15 is arranged on the right end of the second floor rail 6. A bracket 17 is arranged between the first floor rail 1 and the second floor rail 6. The first floor rail 1 is covered with a first floor rail accordion cover connector 9, and the second floor rail 6 is provided with a second floor rail accordion cover connector 10. The bottom of the first floor rail 1 and the second floor rail 6 are supported by a foot plate 16.

[0029] The actual rotation angle of the steel plate is obtained through the above method and device, and the angle information is transmitted to the preprocessing system of the printing pattern. This preprocessing system can automatically calculate the rotation compensation required for the printing pattern based on the received rotation angle data, and then make corresponding angle adjustments to the printing pattern. Even if the steel plate rotates, the printing system can accurately adjust the printing pattern to a position that matches the actual angle of the steel plate according to the instructions of the preprocessing system, ensuring that the printing pattern perfectly corresponds to the pre-spraying position angle on the steel plate, thereby greatly reducing the printing error caused by the rotation of the steel plate.

[0030] This specific implementation method confirms the position and performs precise spraying for the skewed printing pattern caused by the uncertainty of the steel plate position and the influence of the rotation angle, significantly improving the automation level of the steel plate printing process, with low cost, reducing human intervention, and improving production efficiency and printing quality, meeting the needs for efficient, precise and intelligent production.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for confirming the position of a large-area planar object and accurately printing it, characterized in that: The following steps are involved: (1) Position detection: (1.1) The object is static and the edge patrol method is used: a high-precision laser sensor is installed on the printing device. After the steel plate stops in the printing area, the laser sensor is driven by the axis control to detect the edge of the steel plate to obtain the position coordinates; (1.2) Dynamic object line scanning: Use a visual sensor installed just above the conveyor line. When the steel plate passes under the visual sensor, it accurately captures the edge, feature points or specific marks of the steel plate, and cooperates with the encoder to obtain the position information of the entire steel plate; (2) Steel plate rotation information processing: Receive the real-time position information from the sensor and use the algorithm to calculate the rotation angle compensation value required for the printed pattern; based on the calculated compensation value, the pre-processing system adjusts the original printed pattern to ensure that the pattern can be correctly aligned on the steel plate; (3) Use precision stepper motor or servo motor to ensure that the printing point accurately matches the predetermined position on the steel plate; (4) Develop an intuitive and easy-to-use human-computer interaction interface that allows operators to monitor system status, adjust parameter settings, and receive fault alarm information; (5) The system has a built-in feedback mechanism to continuously monitor the printing quality, fine-tune the algorithm parameters based on the actual results, and optimize the printing accuracy and efficiency.

2. The method for position confirmation and accurate printing of a large-area planar object according to claim 1, characterized in that: The sensors in step (1) are installed according to a predetermined layout, and through precise calibration, the physical position information is accurately converted into a digital signal, thereby improving the accuracy.

3. A device for position confirmation and accurate printing of large-area planar objects, characterized in that: The invention comprises a first ground rail (1), a cross-beam bridge (2), a ground rail drag chain groove (3), a first induction block (4), a second induction block (5), a second ground rail (6), a ground rail wire groove bracket (7), an electric control cabinet (8), a first ground rail accordion cover connecting piece (9), a second ground rail accordion cover connecting piece (10), a first ground rail base frame (12), a second ground rail base frame (13), a third ground rail base frame (14), a fourth ground rail base frame (15), a ground anchor plate (16) and a bracket (17). The first ground rail (1) and the second ground rail (6) are arranged in parallel. One end of the first ground rail (1) and the second ground rail (6) are connected by the cross-beam bridge (2). The outer sides of one end of the cross-beam bridge (2) and the second ground rail (6) are provided with a ground rail drag chain groove (3). The ground rail wire groove bracket (7) is provided with a A drag chain, a first induction block (4) and a second induction block (5) are arranged at the end of a second ground rail (6), an electric control cabinet (8) is also arranged at one end of the second ground rail (6), a first ground rail base frame (12) is arranged on the middle left side of the first ground rail (1), a second ground rail base frame (13) is arranged on the middle left side of the second ground rail (6), a third ground rail base frame (14) is arranged at the right end of the first ground rail (1), a fourth ground rail base frame (15) is arranged at the right end of the second ground rail (6), a bracket (17) is arranged between the first ground rail (1) and the second ground rail (6), a first ground rail accordion cover connector (9) is covered on the first ground rail (1), a second ground rail accordion cover connector (10) is provided on the second ground rail (6), and the bottoms of the first ground rail (1) and the second ground rail (6) are supported by a foot plate (16).

Images