Printer automatic modeling and image data matching method

Abstract

The invention discloses an automatic modeling and image data matching method for a printer, and the method comprises the following steps: S1, installation of a sensor: installing a laser distance measuring sensor at one side of a printing trolley through a fastener; s2, the rotary body is fixed, and the position of the rotary body is fixed through a clamp; s3, measuring the distance, and driving a laser distance measuring sensor to move through the printing trolley; and S4, curve generation: automatically drawing the collected data into a curve through drawing software. According to the method, a laser distance measuring sensor is utilized, the laser distance measuring sensor is installed on the left side of a printing trolley and matched with printing stepping Y-axis movement and sampling interval value a, the sensor samples the surface of the rotary body once, sampling drawing software can automatically collect sampling coordinate values, then a curve is automatically drawn, and the curve is the generatrix of the rotary body; and the printing software calculates according to the generatrix to obtain an expanded drawing, so that a printing pattern is automatically adjusted to be matched with the revolving body.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a method for automatic printer modeling and image data matching. Background Art

[0002] When digitally printing the surfaces of cylindrical, conical, and irregular rotating bodies, the digitally printed pattern must match the unfolded view of the rotating body surface. Otherwise, the printed pattern will often be distorted, deformed, or have color misregistration problems. The traditional approach is to use manual surveying and mapping to calculate the unfolded view, or to import the surveyed rotating body curve into the printing software and have the software calculate it. However, in both methods, the rotating body trajectory curve is drawn by manual measurement. If an arc or irregular curve is encountered, surveying is even more difficult, and there will be curve errors, which will cause the printed pattern to not match the actual pattern. Summary of the Invention

[0003] The object of the present invention is to provide a method for automatic printer modeling and image data matching to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a method for automatic printer modeling and image data matching, comprising the following steps:

[0005] S1, sensor installation, install the laser ranging sensor on one side of the printing carriage through fasteners;

[0006] S2, fix the rotating body by using a clamp to fix the position of the rotating body;

[0007] S3, measuring the distance, using the printing carriage to drive the laser distance sensor to move and collect the distance data of the rotating surface;

[0008] S4, curve generation, automatically plotting the collected data into curves and developing diagrams using drawing software;

[0009] S5, printing of the rotating body, using the printing carriage and the clamp to drive the rotating body to rotate, and printing the required image on the surface of the rotating body.

[0010] Preferably, the installation of the sensor in S1 includes the following steps:

[0011] S101, determining the angle, moving the laser distance sensor to one side of the printing carriage, and rotating the laser distance sensor so that the laser distance sensor probe is perpendicular to the rotating body;

[0012] S102, position fixation, use a metal frame and fastening bolts to fix the laser distance sensor to one side of the printing carriage.

[0013] Preferably, the fixture in S2 includes a chuck, which is used to fix the position of the rotating body. One side of the chuck is fixedly connected to the spindle box, and one side of the spindle box is provided with a rotating motor, which is used to drive the rotating body to rotate. A tailstock is provided on the side of the rotating body away from the chuck, and the tailstock is used to support the rotating body.

[0014] Preferably, the fixing of the rotating body in S2 includes:

[0015] S201, clamping the rotating body, moving the rotating body to one side of the chuck, and fixing the position of the rotating body by the chuck;

[0016] S202, supporting the rotating body, moving the position of the tailstock so that the tailstock is in contact with the side of the rotating body away from the chuck, and restricting the rotating body by squeezing the tailstock toward the rotating body.

[0017] Preferably, the printing carriage in S1 includes a frame and a printing nozzle, the printing nozzle is arranged at the bottom of the frame, and the frame is used to drive the printing nozzle to move.

[0018] Preferably, the distance determination in S3 includes:

[0019] S301, determining the data collection distance, presetting the sampling interval value a, and controlling the printing carriage to continuously move and continuously sample at the sampling interval value a;

[0020] S302, position movement, the laser distance sensor is driven to move by the printing carriage, so as to measure the vertical distance between different positions of the rotating body and the laser distance sensor;

[0021] S303, data collection, using a laser distance sensor to collect vertical distances between different positions of the rotating body and the laser distance sensor;

[0022] S304, data transmission, transmitting the measured data to the drawing software through data transmission.

[0023] Preferably, the data transmission in S303 adopts one or more of wired transmission and wireless transmission.

[0024] Preferably, the generation of the curve in S4 includes:

[0025] S401, data processing, importing the data collected in S3 into the drawing software, and presenting the collected data in the form of points in the coordinate system;

[0026] S402, drawing a graph, connecting multiple points in the coordinate system, drawing a curve corresponding to the surface of the rotating body, and drawing an expanded diagram.

[0027] Preferably, the step of drawing the expanded view in S4 is to import the drawn curve into the original view, and adjust the shape of the expanded view according to the curve so that the expanded view matches the expanded view of the surface of the rotating body.

[0028] Preferably, the printing of the rotating body in S5 includes:

[0029] S501, preliminary printing, moving the position of the printing carriage, and printing with the rotating body facing one side of the printing carriage;

[0030] S502, complete printing, drives the chuck to rotate through the rotary motor and the spindle box, and drives the rotating body to rotate through the chuck, thereby printing the rotating body.

[0031] The technical effects and advantages of the present invention are as follows:

[0032] The present invention utilizes a laser ranging sensor, which is installed on the left side of the printing carriage. In conjunction with the printing stepping Y-axis movement, the sampling interval value a, the sensor samples the surface of the rotating body once. The sampling and drawing software automatically collects the coordinate values ​​of each sampling and then automatically draws a curve. The curve is the "busbar" of the rotating body. The printing software calculates the expanded diagram based on the "busbar", thereby automatically adjusting the printing pattern to match the rotating body. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the front structure of the printer of the present invention.

[0034] Figure 2 Schematic diagram of the scanning structure of the present invention.

[0035] Figure 3 A schematic diagram of the scanning curve of the present invention is drawn.

[0036] Figure 4 This is a schematic diagram of the expanded structure of the present invention before adjustment.

[0037] Figure 5 This is a schematic diagram of the expanded structure after adjustment of the present invention.

[0038] Figure 6 Flow chart of the method of the present invention.

[0039] In the figure: 1. Rotating motor; 2. Spindle box; 3. Chuck; 4. Rotating body; 5. Laser ranging sensor; 6. Print carriage; 7. Tailstock. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] The present invention provides Figure 1-6 The method for automatic printer modeling and image data matching shown includes the following steps:

[0042] S1, sensor installation, install the laser ranging sensor 5 on one side of the printing carriage 6 through fasteners;

[0043] S2, fixing the rotating body 4, fixing the position of the rotating body 4 by a clamp;

[0044] S3, measuring the distance, the laser distance sensor 5 is driven by the printing carriage 6 to move, and the surface distance data of the rotating body 4 is collected;

[0045] S4, curve generation, automatically plotting the collected data into curves and developing diagrams using drawing software;

[0046] S5, printing of the rotating body 4, using the printing carriage 6 in conjunction with the clamp to drive the rotating body 4 to rotate, and printing the required image on the surface of the rotating body 4.

[0047] It should be noted that the laser ranging sensor 5 is a high-precision non-contact measuring device used to quickly and accurately measure the distance between the target object and the sensor. The vertical distance between the rotating body 4 and the sensor is measured by the laser ranging sensor 5. When in use, the laser ranging sensor 5 is installed on the left side of the printing carriage 6. In conjunction with the printing step Y-axis movement, the collection interval value is set. The laser ranging sensor 5 samples the surface of the rotating body 4 once. The sampling and drawing software will automatically collect the sampling coordinate values ​​and then automatically draw them into a curve. The sampling frequency can be set to make the measured curve infinitely close to the actual curve, thereby improving printing accuracy and efficiency.

[0048] Specifically, the installation of the sensor in S1 includes the following steps:

[0049] S101, determining the angle, moving the laser distance sensor 5 to one side of the printing carriage 6, and rotating the laser distance sensor 5 so that the probe of the laser distance sensor 5 is perpendicular to the rotating body 4;

[0050] S102, fix the position, use a metal frame and fastening bolts to fix the laser distance sensor 5 on one side of the printing carriage 6.

[0051] It should be noted that the laser ranging sensor 5 is first translated to a predetermined installation position on one side of the printing carriage 6 to ensure that it remains parallel and aligned with the carriage body; then the laser ranging sensor 5 is slowly rotated until the laser emission axis of the laser ranging sensor 5 probe is perpendicular to the surface of the current measuring point of the rotating body 4; when the angle calibration of the laser ranging sensor 5 is completed, the metal frame and fasteners rigidly fix the laser ranging sensor 5 and the printing carriage 6, and the laser ranging sensor 5 is driven to move by the printing carriage 6 when in use.

[0052] Specifically, the fixture in S2 includes a chuck 3, which is used to fix the position of the rotating body 4. One side of the chuck 3 is fixedly connected to the spindle box 2. A rotating motor 1 is provided on one side of the spindle box 2. The rotating motor 1 is used to drive the rotating body 4 to rotate. A tailstock 7 is provided on the side of the rotating body 4 away from the chuck 3. The tailstock 7 is used to support the rotating body 4.

[0053] It should be noted that the chuck 3, spindle box 2, rotating motor 1 and tailstock 7 are all fixed on the processing table; the chuck 3 is an existing three-jaw chuck, which is mainly used to clamp the rotating body 4. Its core structure consists of three synchronously moving jaws, which are linked by an internal flat thread or bevel gear transmission mechanism. When the chuck key is rotated with a wrench, the three jaws will simultaneously tighten toward the center or open outward, thereby realizing automatic centering and clamping of the workpiece, thereby fixing and releasing the rotating body 4; the rotating motor 1 is an existing servo motor, the working principle of which is based on a closed-loop control system. It drives the motor to rotate by receiving a pulse signal from the controller, and uses a built-in encoder to provide real-time feedback of position and speed information to achieve high-precision motion control. When the servo driver receives a pulse command, it outputs three-phase alternating current to form a rotating magnetic field, causing the internal permanent magnet rotor to rotate synchronously; the spindle box 2 is mainly composed of a spindle, a bearing and a speed change mechanism, and different speed outputs are achieved through the speed change mechanism; an adjustment component is provided at the connection between the tailstock 7 and the processing table for adjusting the position of the tailstock 7.

[0054] Specifically, the fixing of the rotating body 4 in S2 includes:

[0055] S201, clamping the rotating body 4, moving the rotating body 4 to one side of the chuck 3, and fixing the position of the rotating body 4 by the chuck 3;

[0056] S202 , supporting the rotary body 4 , moving the tailstock 7 so that the tailstock 7 is in contact with the side of the rotary body 4 away from the chuck 3 , and restricting the rotary body 4 by squeezing the tailstock 7 toward the rotary body 4 .

[0057] It should be noted that when installing the rotating body 4 and the chuck 3, the tail stock 7 is first moved to the side away from the chuck 3, and then the rotating body 4 is fixed to one side of the chuck 3, and finally the position of the tail stock 7 is moved so that the tail stock 7 is in contact with the side of the rotating body 4 away from the chuck 3. When removing the rotating body 4, the tail stock 7 is first moved to the side away from the rotating body 4, and then the rotating body 4 is removed from the side of the chuck 3.

[0058] Specifically, the printing carriage 6 in S1 includes a frame and a printing nozzle. The printing nozzle is arranged at the bottom of the frame, and the frame is used to drive the printing nozzle to move.

[0059] It should be noted that the printing carriage 6 is composed of a printing head and a frame. The printing head is the core executive component of the digital printer, which is responsible for spraying the printing material onto the rotating body 4 in a precise and controllable manner to form the required pattern. The frame is composed of a fixed frame and a movable module. The printing head is installed on the fixed frame. The fixed frame and the printing head are driven to move by the movable module, thereby realizing printing at different positions of the rotating body 4.

[0060] Specifically, the distance measurement in S3 includes:

[0061] S301, determining the data collection distance, presetting the sampling interval value a, and controlling the printing carriage to continuously move and continuously sample at the sampling interval value a;

[0062] S302, position movement, the laser distance sensor 5 is driven to move by the printing carriage 6, so as to measure the vertical distance between the rotating body 4 and the laser distance sensor 5 at different positions;

[0063] S303, data collection, using the laser distance sensor 5 to collect vertical distances between different positions of the rotating body 4 and the laser distance sensor 5;

[0064] S304, data transmission, transmitting the measured data to the drawing software through data transmission.

[0065] It should be noted that the sampling interval value a is dynamically adjusted according to the curvature radius of the rotating body 4, and the amount of acquired data is adjusted by adjusting the sampling interval value a; the printing carriage 6 drives the laser ranging sensor 5 to move along the Y-axis to ensure that the sensor probe is always perpendicular to the surface of the rotating body 4, and ensure that the sampling point spacing is strictly equal to the sampling interval value a, and the laser ranging sensor 5 is driven by the printing carriage 6 of the printer to perform continuous movement (the sampling interval value a is set first, and the software collects the number of pulses fed back by the servo motor that drives the printing carriage to move, confirms that the carriage has moved a distance a, and performs continuous sampling).

[0066] Specifically, the data transmission in S303 adopts one or more of wired transmission and wireless transmission.

[0067] It should be noted that wired transmission: data is sent to the host computer in real time via USB or Ethernet; wireless transmission: Wi-Fi or Bluetooth 5.0 is used, which is suitable for mobile measurement scenarios. When using, select one of the transmission methods to connect the laser ranging sensor 5 and the device that hosts the mapping software.

[0068] Specifically, the generation of the curve in S4 includes:

[0069] S401, data processing, importing the data collected in S3 into the drawing software, and presenting the collected data in the form of points in the coordinate system;

[0070] S402, drawing a graph, connecting multiple points in the coordinate system, drawing a curve corresponding to the surface of the rotating body 4, and drawing an expanded diagram.

[0071] Furthermore, during data processing and visualization, the raw data collected via S3 must first be imported into specialized drawing software. Once imported, the software accurately positions each data sample as a discrete point in a two-dimensional or three-dimensional coordinate system, where the horizontal and vertical coordinates correspond to the values ​​of the independent and dependent variables, respectively. Subsequently, by selecting an appropriate curve-fitting algorithm, these discrete data points are sequentially connected according to their inherent patterns, generating a smooth or piecewise continuous curve that intuitively displays the local features of the rotating body 4. After the curve of the rotating body 4 is drawn, further adjustments are made to the graph based on actual needs to ensure that the printed pattern accurately matches the unfolded view of the rotating body 4 surface.

[0072] Specifically, the drawing of the expanded view in S4 is to import the drawn curve into the original view, and adjust the shape of the expanded view according to the curve, so that the expanded view matches the expanded view of the surface of the rotating body 4.

[0073] Specifically, the printing of the rotating body 4 in S5 includes:

[0074] S501, preliminary printing, moving the position of the printing carriage 6, and printing with the rotating body 4 facing the side of the printing carriage 6;

[0075] S502, complete printing, the chuck 3 is driven to rotate by the rotary motor 1 and the spindle box 2, and the chuck 3 drives the rotary body 4 to rotate, so that the rotary body 4 is printed.

[0076] It should be noted that during the printing process, the printing carriage 6 is first driven to move along the Y-axis to the predetermined printing starting position, so that the printing nozzle is facing the starting area of ​​the rotating body 4 to be printed. At the same time, the rotating motor 1 drives the chuck 3 through the precision gear set in the spindle box 2, driving the rotating body 4 to rotate at the set speed, thereby completing the printing of the surface of the rotating body 4.

[0077] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for automatic printer modeling and image data matching, characterized in that: The following steps are involved: S1, sensor installation, install the laser distance sensor (5) on one side of the printing carriage (6) through fasteners; S2, fixing the rotating body (4), and fixing the position of the rotating body (4) by a clamp; S3, measuring the distance, by driving the laser distance sensor (5) to move by the printing carriage (6), and collecting the data of the surface distance of the rotating body (4); S4, curve generation, automatically plotting the collected data into curves and developing diagrams using drawing software; S5, printing of the rotating body (4), using the printing carriage (6) in conjunction with the clamp to drive the rotating body (4) to rotate, and printing the required image on the surface of the rotating body (4).

2. The method for automatic printer modeling and image data matching according to claim 1, characterized in that: The installation of the S1 sensor includes the following steps: S101, determining the angle, moving the laser distance sensor (5) to one side of the printing carriage (6), and rotating the laser distance sensor (5) so that the probe of the laser distance sensor (5) is perpendicular to the rotating body (4); S102, fix the position, use a metal frame and fastening bolts to fix the laser distance sensor (5) on one side of the printing carriage (6).

3. The method for automatic printer modeling and image data matching according to claim 1, characterized in that: The clamp in S2 includes a chuck (3), which is used to fix the position of the rotating body (4), one side of the chuck (3) is fixedly connected to the spindle box (2), one side of the spindle box (2) is provided with a rotating motor (1), and the rotating motor (1) is used to drive the rotating body (4) to rotate, and a tailstock (7) is provided on the side of the rotating body (4) away from the chuck (3), and the tailstock (7) is used to support the rotating body (4).

4. The method for automatic printer modeling and image data matching according to claim 3, characterized in that: The fixing of the rotating body (4) in S2 includes: S201, clamping the rotating body (4), moving the rotating body (4) to one side of the chuck (3), and fixing the position of the rotating body (4) by the chuck (3); S202, supporting the rotating body (4), moving the position of the tailstock (7) so that the tailstock (7) and the side of the rotating body (4) away from the chuck (3) are in contact, and the rotating body (4) is restricted by squeezing the tailstock (7) toward the rotating body (4).

5. The method for automatic printer modeling and image data matching according to claim 1, characterized in that: The printing carriage (6) in S1 comprises a frame and a printing nozzle, wherein the printing nozzle is arranged at the bottom of the frame, and the frame is used to drive the printing nozzle to move.

6. The method for automatic printer modeling and image data matching according to claim 1, characterized in that: The distance determination in S3 includes: S301, determining the data collection distance, presetting the sampling interval value a, and controlling the printing carriage to continuously move and continuously sample at the sampling interval value a; S302, position movement, the laser distance sensor (5) is driven to move by the printing carriage (6), so as to measure the vertical distance between the rotating body (4) and the laser distance sensor (5) at different positions; S303, data collection, collecting vertical distances of different positions of the rotating body (4) from the laser distance sensor (5) through the laser distance sensor (5); S304, data transmission, transmitting the measured data to the drawing software through data transmission.

7. The method for automatic printer modeling and image data matching according to claim 6, characterized in that: The data transmission in S303 adopts one or more of wired transmission and wireless transmission.

8. The method for automatic printer modeling and image data matching according to claim 1, characterized in that: The generation of the curve in S4 includes: S401, data processing, importing the data collected in S3 into the drawing software, and presenting the collected data in the form of points in the coordinate system; S402, drawing of a graph, connecting a plurality of points in the coordinate system, drawing a curve corresponding to the surface of the rotating body (4), and drawing an expanded graph.

9. The method for automatic printer modeling and image data matching according to claim 8, characterized in that: The drawing of the expanded diagram in S4 is to import the drawn curve into the original diagram and adjust the shape of the expanded diagram according to the curve so that the printed pattern matches the expanded diagram of the surface of the rotating body (4).

10. The method for automatic printer modeling and image data matching according to claim 1, characterized in that: The printing of the rotating body (4) in S5 includes: S501, preliminary printing, moving the position of the printing carriage (6), and printing the rotating body (4) facing the side of the printing carriage (6) through the printing carriage (6); S502, complete printing, the chuck (3) is driven to rotate by the rotary motor (1) and the spindle box (2), and the chuck (3) drives the rotary body (4) to rotate, thereby printing the rotary body (4).

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