CN111907189A - Calibration method, calibration device, electronic carving control system and computer-readable storage medium - Google Patents
Calibration method, calibration device, electronic carving control system and computer-readable storage medium Download PDFInfo
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- CN111907189A CN111907189A CN202010566283.1A CN202010566283A CN111907189A CN 111907189 A CN111907189 A CN 111907189A CN 202010566283 A CN202010566283 A CN 202010566283A CN 111907189 A CN111907189 A CN 111907189A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/02—Engraving; Heads therefor
- B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
- B41C1/045—Mechanical engraving heads
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Abstract
The application relates to a calibration method, a calibration device, an electric carving control system and a computer readable storage medium, wherein the calibration method comprises the following steps: driving the engraving head to reciprocate along the axial direction of the plate roller and perpendicular to the cylindrical surface of the plate roller according to the engraving control signal so as to form a trial engraving mesh on the plate roller; controlling the roller to rotate and controlling the backup head to move along the axial direction of the roller so that the backup head obtains the size information of the trial carving net hole by using the arranged sensor unit; and acquiring a target calibration relation between the size information of the trial carving net holes and the carving control signals. According to the method and the device, the engraving head is controlled to form the trial engraving holes on the plate roller according to the engraving control signal, and the size information of the engraved trial engraving holes is collected, so that the size information of the trial engraving holes and the target calibration relation between the engraving control signals are obtained. The size information of the current carving cell can be compensated in real time in the carving process by utilizing the target calibration relation, so that the accuracy of the carving control signal is improved.
Description
Technical Field
The present application relates to an electric engraving plate making, and more particularly, to a calibration method, an apparatus, an electric engraving control system, and a computer-readable storage medium.
Background
With the development of modern society, people have higher and higher requirements on printing quality, and a plate roller is a key factor influencing the quality of the plate roller. The roll format includes relief, flat and intaglio, wherein intaglio dominates the market with its excellent properties. The gravure platemaking method comprises the following steps: etching, laser engraving, electric engraving and the like. The electroengraving plate-making is widely applied due to the advantages of strong repeatability, variable mesh point area and depth, low cost and the like.
However, the processing precision of the carving cells of the existing electric carving equipment is guaranteed by a mechanical structure, and the processing precision is not high.
Disclosure of Invention
The embodiment of the application provides a calibration method, a calibration device, an electric carving control system and a computer readable storage medium, which can improve the processing precision of electric carving plate making.
A calibration method, comprising:
driving an engraving head to reciprocate along the axial direction of a plate roller and perpendicular to the cylindrical surface of the plate roller according to an engraving control signal so as to form a trial engraving mesh on the plate roller;
controlling the roller to rotate and controlling the backup head to move along the axial direction of the roller so that the backup head obtains the size information of the trial carving net hole by using the arranged sensor unit;
and acquiring a target calibration relation between the size information of the trial carving net holes and the carving control signals.
In one embodiment, the obtaining of the target calibration relationship between the size information of the trial engraving cell and the engraving control signal includes:
acquiring a first calibration relation between the size information of the trial carving pits and the alternating current component signal;
acquiring a second calibration relation between the size information of the trial engraving pits and the direct-current component signal;
and obtaining the target calibration relation according to the first calibration relation and the second calibration relation.
In one embodiment, the engraving control signal comprises a dc component signal, and before driving the engraving head to reciprocate perpendicular to the cylindrical surface of the plate roll while moving in the axial direction of the plate roll according to the engraving control signal, the method further comprises:
and setting the engraving control signal, wherein the amplitude of the direct current component signal is changed according to an amplitude preset rule.
In one embodiment, the sensor unit includes a camera, and the enabling the headrest to acquire the size information of the trial carving cells by using the set sensor unit includes:
acquiring a detection image corresponding to the trial carving net hole by using the camera;
and identifying the detection image to obtain the size information of the trial carving net holes.
In one embodiment, the sensor unit further includes a laser sensor, and the enabling the headrest to obtain the size information of the trial carving cells by using the set sensor unit includes:
transmitting a laser signal to the printing roller engraved with the trial engraving holes by using the laser sensor;
and acquiring the size information of the trial carving mesh according to the echo signal reflected by the plate roller.
In one embodiment, after obtaining the target calibration relationship between the size information of the trial engraving cell and the engraving control signal, the method further includes:
driving the engraving head to engrave the current mesh on the printing roller by using the engraving control signal;
collecting the size information of the current net cave in real time;
and compensating the engraving control signal according to the size information of the current cell and the target calibration relation.
In one embodiment, the compensating the engraving control signal according to the size information of the current cell and the target calibration relationship includes:
and when the size information of the current net hole is inconsistent with the size information of the preset net hole, the target calibration relation is utilized to compensate the carving control signal in real time.
A calibration device, comprising:
the trial engraving module is used for driving the engraving head to reciprocate along the axial direction of the printing roller and simultaneously perpendicular to the cylindrical surface of the printing roller according to an engraving control signal so as to form a trial engraving mesh on the printing roller, wherein the engraving control signal corresponds to the size information of a preset mesh;
the acquisition module is used for controlling the printing roller to rotate and controlling the backup head to move along the axial direction of the printing roller so that the backup head can acquire the size information of the trial carving net hole by using the arranged sensor unit;
and the calibration module is used for acquiring the target calibration relation between the size information of the trial carving pits and the carving control signals.
An electronic engraving control system comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the calibration method.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as described above.
The calibration method, the calibration device, the electronic carving control system and the computer readable storage medium comprise the following steps: driving an engraving head to reciprocate along the axial direction of a plate roller and perpendicular to the cylindrical surface of the plate roller according to an engraving control signal so as to form a trial engraving cell on the plate roller, wherein the engraving control signal corresponds to the size information of a preset cell; controlling the roller to rotate and controlling the backup head to move along the axial direction of the roller so that the backup head obtains the size information of the trial carving net hole by using the arranged sensor unit; and acquiring a target calibration relation between the size information of the trial carving net holes and the carving control signals. According to the method and the device, the engraving head is controlled to form the trial engraving holes on the plate roller according to the engraving control signal, and the size information of the engraved trial engraving holes is collected, so that the size information of the trial engraving holes and the target calibration relation between the engraving control signals are obtained. Furthermore, the size information of the current carving cell can be compensated in real time in the carving process by utilizing the target calibration relation. Therefore, the accuracy of the engraving control signal is improved, and further, the processing precision of the electric engraving plate-making can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an exemplary embodiment of a calibration method;
FIG. 2 is a flow chart of a calibration method according to an embodiment of the present application;
FIG. 3 is a flow chart of a calibration method according to another embodiment of the present application;
FIG. 4 is a flow chart of a calibration method according to yet another embodiment of the present application;
FIG. 5 is a flowchart illustrating steps performed by the head of the present application for obtaining information on the size of the trial engraving cells by using the sensor unit;
FIG. 6 is a flowchart illustrating steps performed in another embodiment of the present invention to enable a headrest to obtain information on the size of a trial carving cell by using a sensor unit;
FIG. 7 is a flow chart of a calibration method according to another embodiment of the present application;
FIG. 8 is a block diagram of a calibration apparatus according to an embodiment;
FIG. 9 is a schematic diagram of an exemplary embodiment of an electrical engraving control system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first client may be referred to as a second client, and similarly, a second client may be referred to as a first client, without departing from the scope of the present application. Both the first client and the second client are clients, but they are not the same client.
FIG. 1 is a diagram illustrating an exemplary environment in which the calibration method may be implemented. When the electric carving machine works normally, the main shaft of the electric carving equipment drives the printing roller to rotate at a high speed under the driving of the alternating-current servo motor, the carving head is pressed on the surface of the printing roller driven by the main shaft under the driving of the head leaning motor, and the trolley drives the carving head to move continuously at a low speed or move along the axial direction of the printing roller in a stepping mode under the driving of the screw rod of the servo motor. The pattern to be processed by the electric carving equipment is converted into digital image information, a driving module in the carving head converts a digital signal into an analog signal through a digital-analog converter, and the carving head is controlled to carve carving points (net holes) with different sizes and depths on the surface of the plate roller copper layer at a fixed frequency (4K-8 KHz).
Fig. 2 is a flowchart of a calibration method according to an embodiment of the present application. The calibration method provided by the present application is described by taking the example of the calibration method operating on the electrographic engraving apparatus shown in fig. 1. As shown in fig. 2, the calibration method includes steps 202 to 206.
And step 202, driving the engraving head to reciprocate along the axial direction of the plate roller and perpendicular to the cylindrical surface of the plate roller according to the engraving control signal so as to form trial engraving cells on the plate roller.
Wherein, set up the sculpture control signal and utilize the control card to control signal communication transmission with carving to the head. The engraving control signal is the superposition of a direct current component signal and an alternating current component signal. In the process of trial engraving, the amplitude of the direct-current component signal can be kept unchanged, and the alternating-current component signal is changed according to a preset rule; the amplitude of the direct current component can be controlled to be increased or decreased in a preset proportion. The carving of the trial carving net holes is completed under the driving of the carving control signal. The engraving head moves along the axial direction of the plate roller under the driving of the engraving control signal and simultaneously reciprocates on the cylindrical surface vertical to the rotating plate roller, so that trial engraving holes are formed on the plate roller. The correspondence between the size information of the trial-carving mesh holes on the plate roller and the carving control signals means that the amplitude, the frequency or the phase of the carving control signals correspond to the size of the trial-carving mesh holes on the plate roller. In one embodiment, the engraving control signal is a superposition of a direct current component signal and an alternating current component signal. The alternating current component signal is used for controlling the total number of points engraved by the engraving head per second; the dc component signal is used to control the depth of feed of the engraving head relative to the surface of the plate roll.
And 204, controlling the plate roller to rotate and controlling the backup head to move along the axial direction of the plate roller so that the backup head can acquire the size information of the trial carving hole by using the arranged sensor unit.
Specifically, the sensor unit is arranged on the head and can comprise a camera, a laser sensor, a position sensor, a speed sensor and the like, and the sensor unit can acquire the size information of the test engraving pits engraved on the printing roller. If the engraving head engraves one or more circles of trial engraving holes on the plate roller. The process of acquiring the size information of the trial carving net holes by the sensing unit is as follows: when the backup head is at the initial position, the printing roller is controlled to rotate, the backup head position is unchanged in the process that the printing roller rotates for one circle, and the sensor unit on the backup head acquires the size information of the circle of trial engraving cells. For example, the sensor unit may be used to collect detection images corresponding to a plurality of trial engraving cells, and information such as distribution and size of the trial engraving cells is obtained according to the detection images; and the sensor unit can also be used for transmitting a detection signal to the plate roller and acquiring the size information of the carving test net hole according to the received echo signal. The size information of the trial engraving cells may be size information corresponding to the detection image, size information corresponding to the echo signal, or superposition of the size information corresponding to the detection image and the size information corresponding to the echo signal. It should be noted that the above-mentioned size information detection method is only used for illustration, and is not limited to the above-mentioned exemplary method, and other methods can be used to collect the size information of the trial engraving cells, and are not described herein again.
And step 206, acquiring the target calibration relation between the size information of the trial engraving cells and the engraving control signals.
Specifically, obtain the size information of trying to carve the pocket and the sculpture control signal that corresponds, record each element group that corresponds constantly, each element group includes: the size information of the trial carving net holes and the corresponding carving control signals. And performing function fitting on the plurality of element groups to obtain a target calibration relation between the size information of the trial carving pits and the carving control signals. And a control variable method can be adopted to obtain a target calibration relation. For example, the amplitude of the direct-current component signal is controlled to be unchanged, and the amplitude of the alternating-current component signal is controlled to be changed, so that a first calibration relation between the size information of the pilot carving pits and the alternating-current component signal is obtained; and controlling the amplitude of the alternating current component signal to be unchanged and the amplitude of the direct current component signal to be changed, so as to obtain a second calibration relation between the size information of the pilot carving pits and the direct current component signal. The obtaining of the target calibration relationship according to the first calibration relationship and the second calibration relationship may be taking the first calibration relationship or the second calibration relationship as the target calibration relationship, or may be superimposing the first calibration relationship and the second calibration relationship to obtain the target calibration relationship.
The calibration method comprises the following steps: and driving the engraving head to reciprocate along the axial direction of the plate roller and simultaneously vertical to the cylindrical surface of the plate roller according to the engraving control signal so as to form trial engraving cells on the plate roller. And controlling the roller to rotate and controlling the backup head to move along the axial direction of the roller so that the backup head obtains the size information of the trial carving net hole by using the arranged sensor unit. And acquiring a target calibration relation between the size information of the trial carving pits and the carving control signal. According to the method and the device, the engraving head is controlled to form the trial engraving pits on the plate roller according to the engraving control signal, and the size information of the engraved trial engraving pits is collected, so that the target calibration relation between the size information of the trial engraving pits and the engraving control signal is obtained. Furthermore, the size information of the current carving cell can be compensated in real time in the carving process by utilizing the target calibration relation. Therefore, the accuracy of the engraving control signal is improved, and further, the processing precision of the electric engraving plate-making can be improved. In addition, the probability of failure of the electric carving plate making can be reduced, and the cost of the electric carving plate making is saved.
Fig. 3 is a flowchart of a calibration method according to another embodiment of the present application. As shown in fig. 3, the calibration method provided in this embodiment includes: step 302 to step 306. And 302, driving the engraving head to reciprocate perpendicular to the cylindrical surface of the plate roller while moving along the axial direction of the plate roller according to the engraving control signal so as to form trial engraving cells on the plate roller. And step 304, controlling the plate roller to rotate and controlling the backup head to move along the axial direction of the plate roller, so that the backup head can acquire the size information of the trial carving pits by using the arranged sensor unit. Step 306, acquiring a first calibration relation between the size information of the trial engraving pits and the alternating current component signals; acquiring a second calibration relation between the size information of the trial engraving pits and the direct-current component signal; and obtaining a target calibration relation according to the first calibration relation and the second calibration relation.
Specifically, a control variable method may be adopted to obtain the target calibration relationship. For example, the amplitude of the direct-current component signal is controlled to be unchanged, and the amplitude of the alternating-current component signal is controlled to be changed, so that a first calibration relation between the size information of the pilot carving pits and the alternating-current component signal is obtained; and controlling the amplitude of the alternating current component signal to be unchanged and the amplitude of the direct current component signal to be changed, so as to obtain a second calibration relation between the size information of the pilot carving pits and the direct current component signal. Obtaining the target calibration relationship according to the first calibration relationship and the second calibration relationship may be that the first calibration relationship or the second calibration relationship is used as the target calibration relationship; the first calibration relation and the second calibration relation can be superposed to obtain a target calibration relation; the target calibration relationship can also be obtained by superposing the result of multiplying the first calibration relationship by the first coefficient and the result of multiplying the second calibration relationship by the second coefficient.
Fig. 4 is a flowchart of a calibration method according to still another embodiment of the present application. In this embodiment, the engraving control signal includes a dc component signal, and as shown in fig. 4, the calibration method provided in this embodiment includes: step 400 to step 408.
and 402, driving the engraving head to reciprocate perpendicular to the cylindrical surface of the plate roller while moving along the axial direction of the plate roller according to the engraving control signal so as to form trial engraving cells on the plate roller.
And step 404, controlling the plate roller to rotate and controlling the backup head to move along the axial direction of the plate roller, so that the backup head obtains the size information of the trial carving pits by using the arranged sensor unit.
And 406, acquiring a target calibration relation between the size information of the trial engraving cells and the engraving control signal.
Specifically, the carving control signal for trial carving is set, the carving control signal can comprise a direct current component signal and an alternating current component signal, and the carving control signal can be set by adopting a control variable method. For example, the amplitude of the dc component signal is controlled to be unchanged, only the amplitude of the ac component signal is changed, and the amplitude of the dc component signal may also be controlled to change according to a preset rule while changing the amplitude of the ac component signal, where the preset rule may be an increment or a decrement; the amplitude of the direct current component signal can also be controlled to be kept unchanged and then changed according to a preset rule.
In one embodiment, the sensor unit includes a camera, as shown in fig. 5, the step of enabling the headrest to obtain the size information of the trial carving cells by using the sensor unit includes: step 502 and step 504.
And 502, acquiring a detection image corresponding to the trial carving hole by using a camera.
And step 504, identifying the detection image to obtain the size information of the trial carving pits.
Specifically, the process of obtaining the size information of the trial engraving cells by the head using the set sensor unit may be: the backup head moves to a corresponding position along the axial direction of the printing roller and then stops, in the process that the printing roller rotates for a circle, the camera on the backup head collects detection images corresponding to a plurality of trial engraving net holes, the detection images cover all the trial engraving net holes, and the detection images carry size information of the trial engraving net holes, such as the length, the width, the area and the like of the trial engraving net holes. The process of identifying the plurality of detection images to obtain the size information of the trial carving pits may be as follows: and splicing the detection images into target images comprising all the trial carving holes, and identifying according to the target images to obtain the size information of the trial carving holes on the plate roller. The size information of the test engraving cells corresponding to each region can be obtained by analyzing each detection image respectively, and then the size information corresponding to each region is integrated to obtain the size information of all the test engraving cells.
In one embodiment, the sensor unit further includes a laser sensor, as shown in fig. 6, the step of enabling the headrest to obtain the size information of the trial-carving cells by using the sensor unit includes: step 602 and step 604.
And step 604, acquiring the size information of the trial carving mesh according to the echo signal reflected by the plate roller.
Specifically, a laser sensor in the sensor unit can be used for transmitting a laser signal to the plate roller, an echo signal reflected by the plate roller is analyzed, and two-dimensional or three-dimensional reconstruction can be performed on the trial-carving mesh on the plate roller according to detection information in the echo signal to obtain size information of the trial-carving mesh. In one embodiment, the size information of the trial engraving cells collected by the laser and the size information of the trial engraving cells collected by the camera can be supplemented with each other, so that more comprehensive trial engraving cell size information can be obtained.
Fig. 7 is a flowchart of a calibration method according to another embodiment of the present application. In this embodiment, the engraving control signal includes a dc component signal, and as shown in fig. 7, the calibration method provided in this embodiment includes: step 702 to step 708.
And 702, driving the engraving head to reciprocate along the axial direction of the plate roller and perpendicular to the cylindrical surface of the plate roller according to the engraving control signal so as to form trial engraving cells on the plate roller.
And 704, controlling the plate roller to rotate and controlling the backup head to move along the axial direction of the plate roller, so that the backup head obtains the size information of the trial carving pits by using the arranged sensor unit.
And step 706, acquiring a target calibration relation between the size information of the trial carving cells and the carving control signals.
Specifically, first, trial engraving is performed to obtain a relationship between cell size information and an engraving control signal. During the engraving plate-making process, acquiring the size information of the current cell, and adjusting the engraving control signal in real time once the fact that the size information of the current cell is inconsistent with the size information of the expected cell is detected, so that the size information of the current cell is compensated.
In one embodiment, the step of compensating the engraving control signal according to the size information of the current cell and the target calibration relation comprises: and when the size information of the current net hole is inconsistent with the size information of the preset net hole, carrying out real-time compensation on the carving control signal by utilizing the target calibration relation.
It should be understood that although the various steps in the flow charts of fig. 2-7 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-7 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
Fig. 8 is a block diagram of a calibration apparatus according to an embodiment. As shown in fig. 8, the calibration apparatus includes: a trial carving module 802, an obtaining module 804, and a calibration module 806.
And the trial engraving module 802 is used for driving the engraving head to reciprocate along the axial direction of the plate roller and simultaneously perpendicular to the cylindrical surface of the plate roller according to the engraving control signal so as to form trial engraving cells on the plate roller.
Wherein, set up the sculpture control signal and utilize the control card to control signal communication transmission with carving to the head. The engraving control signal is the superposition of a direct current component signal and an alternating current component signal. In the process of trial engraving, the amplitude of the direct-current component signal can be kept unchanged, and the alternating-current component signal is changed according to a preset rule; the amplitude of the direct current component can be controlled to be increased or decreased in a preset proportion. The carving of the trial carving net holes is completed under the driving of the carving control signal. The engraving head moves along the axial direction of the plate roller under the driving of the engraving control signal and simultaneously reciprocates on the cylindrical surface vertical to the rotating plate roller, so that trial engraving holes are formed on the plate roller. The correspondence between the size information of the trial-carving mesh holes on the plate roller and the carving control signals means that the amplitude, the frequency or the phase of the carving control signals correspond to the size of the trial-carving mesh holes on the plate roller. In one embodiment, the engraving control signal is a superposition of a direct current component signal and an alternating current component signal. The alternating current component signal is used for controlling the total number of points engraved by the engraving head per second; the dc component signal is used to control the depth of feed of the engraving head relative to the surface of the plate roll.
The obtaining module 804 controls the plate roller to rotate and controls the backup head to move along the axial direction of the plate roller, so that the backup head obtains the size information of the trial carving pits by using the arranged sensor unit.
Specifically, the sensor unit is arranged on the head and can comprise a camera, a laser sensor, a position sensor, a speed sensor and the like, and the sensor unit can acquire the size information of the test engraving pits engraved on the printing roller. If the engraving head engraves one or more circles of trial engraving holes on the plate roller. The process of acquiring the size information of the trial carving net holes by the sensing unit is as follows: when the backup head is at the initial position, the printing roller is controlled to rotate, the backup head position is unchanged in the process that the printing roller rotates for one circle, and the sensor unit on the backup head acquires the size information of the circle of trial engraving cells. For example, the sensor unit may be used to collect detection images corresponding to a plurality of trial engraving cells, and information such as distribution and size of the trial engraving cells is obtained according to the detection images; and the sensor unit can also be used for transmitting a detection signal to the plate roller and acquiring the size information of the carving test net hole according to the received echo signal. The size information of the trial engraving cells may be size information corresponding to the detection image, size information corresponding to the echo signal, or superposition of the size information corresponding to the detection image and the size information corresponding to the echo signal. It should be noted that the above-mentioned size information detection method is only used for illustration, and is not limited to the above-mentioned exemplary method, and other methods can be used to collect the size information of the trial engraving cells, and are not described herein again.
And a calibration module 806, configured to obtain a target calibration relationship between the size information of the trial engraving cell and the engraving control signal.
Specifically, obtain the size information of trying to carve the pocket and the sculpture control signal that corresponds, record each element group that corresponds constantly, each element group includes: the size information of the trial carving net holes and the corresponding carving control signals. And performing function fitting on the plurality of element groups to obtain a target calibration relation between the size information of the trial carving pits and the carving control signals. And a control variable method can be adopted to obtain a target calibration relation. For example, the amplitude of the direct-current component signal is controlled to be unchanged, and the amplitude of the alternating-current component signal is controlled to be changed, so that a first calibration relation between the size information of the pilot carving pits and the alternating-current component signal is obtained; and controlling the amplitude of the alternating current component signal to be unchanged and the amplitude of the direct current component signal to be changed, so as to obtain a second calibration relation between the size information of the pilot carving pits and the direct current component signal. The obtaining of the target calibration relationship according to the first calibration relationship and the second calibration relationship may be taking the first calibration relationship or the second calibration relationship as the target calibration relationship, or may be superimposing the first calibration relationship and the second calibration relationship to obtain the target calibration relationship.
The calibration device drives the engraving head to reciprocate along the axial direction of the plate roller and perpendicular to the cylindrical surface of the plate roller according to the engraving control signal by using the engraving test module 802 so as to form an engraving test mesh hole on the plate roller. The acquisition module 804 is used for controlling the plate roller to rotate and controlling the backup head to move along the axial direction of the plate roller, so that the backup head acquires the size information of the trial carving hole by using the arranged sensor unit. The calibration module 806 is utilized to obtain a target calibration relationship between the dimension information of the trial engraving cells and the engraving control signal. According to the method and the device, the engraving head is controlled to form the trial engraving pits on the plate roller according to the engraving control signal, and the size information of the engraved trial engraving pits is collected, so that the target calibration relation between the size information of the trial engraving pits and the engraving control signal is obtained. Furthermore, the size information of the current carving cell can be compensated in real time in the carving process by utilizing the target calibration relation. Therefore, the accuracy of the engraving control signal is improved, and further, the processing precision of the electric engraving plate-making can be improved.
In one embodiment, the calibration module is used for acquiring a first calibration relation between the size information of the trial engraving pits and the alternating current component signal; acquiring a second calibration relation between the size information of the trial engraving pits and the direct-current component signal; and obtaining a target calibration relation according to the first calibration relation and the second calibration relation.
In one embodiment, the engraving control signal includes a dc component signal, and the calibration apparatus further includes a setting module configured to set the engraving control signal, wherein an amplitude of the dc component signal varies according to an amplitude preset rule.
In one embodiment, the sensor unit comprises a camera, and the control module further acquires a detection image corresponding to the trial carving hole by using the camera; and identifying the detection image to obtain the size information of the trial carving pits.
In one embodiment, the sensor unit further comprises a laser sensor, and the control module is configured to transmit a laser signal to the plate roller engraved with the trial engraving cells by using the laser sensor. And acquiring the size information of the trial carving mesh according to the echo signal reflected by the plate roller.
In one embodiment, the calibration device further comprises a compensation module, which is used for driving the engraving head to engrave the current cells on the printing roller by using the engraving control signal; acquiring the size information of the current net cave in real time; and compensating the engraving control signal according to the size information of the current net hole and the target calibration relation.
In one embodiment, the compensation module is configured to perform real-time compensation on the engraving control signal by using the target calibration relationship when the size information of the current cell is inconsistent with the size information of the preset cell.
The division of each module in the calibration apparatus is only used for illustration, and in other embodiments, the calibration apparatus may be divided into different modules as needed to complete all or part of the functions of the calibration apparatus.
For the specific definition of the calibration device, reference may be made to the above definition of the calibration device method, which is not described herein again. The modules in the calibration device can be implemented in whole or in part by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
FIG. 9 is a schematic diagram of an exemplary embodiment of an electrical engraving control system. As shown in fig. 9, the electrographic control system includes a processor and a memory connected by a system bus. Wherein, the processor is used for providing calculation and control capability and supporting the operation of the whole electric carving control system. The memory may include a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The computer program can be executed by a processor for implementing a calibration method provided in the following embodiments. The internal memory provides a cached execution environment for the operating system computer programs in the non-volatile storage medium.
The implementation of the respective modules in the calibration apparatus provided in the embodiments of the present application may be in the form of a computer program. The computer program may be run on a terminal or a server. The program modules of the computer program may be stored in the memory of the electronic engraving control system. Which when executed by a processor, performs the steps of the method described in the embodiments of the present application.
The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of the calibration method.
A computer program product comprising instructions which, when run on a computer, cause the computer to perform a calibration method.
Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus (Rambus) direct RAM (RDRAM), direct bused dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM).
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A calibration method, comprising:
driving an engraving head to reciprocate along the axial direction of a plate roller and perpendicular to the cylindrical surface of the plate roller according to an engraving control signal so as to form a trial engraving mesh on the plate roller;
controlling the roller to rotate and controlling the backup head to move along the axial direction of the roller so that the backup head obtains the size information of the trial carving net hole by using the arranged sensor unit;
and acquiring a target calibration relation between the size information of the trial carving net holes and the carving control signals.
2. The method of claim 1, wherein the obtaining of the target calibration relationship between the dimension information of the trial engraving cell and the engraving control signal comprises:
acquiring a first calibration relation between the size information of the trial carving pits and the alternating current component signal;
acquiring a second calibration relation between the size information of the trial engraving pits and the direct-current component signal;
and obtaining the target calibration relation according to the first calibration relation and the second calibration relation.
3. The method of claim 1, wherein the engraving control signal comprises a dc component signal, and wherein before driving the engraving head to reciprocate perpendicular to the cylindrical surface of the plate roll while moving in the axial direction of the plate roll in accordance with the engraving control signal, the method further comprises:
and setting the engraving control signal, wherein the amplitude of the direct current component signal is changed according to an amplitude preset rule.
4. The method according to claim 1, wherein the sensor unit comprises a camera, and the causing the headrest to acquire the size information of the trial carving cells by using the sensor unit comprises:
acquiring a detection image corresponding to the trial carving net hole by using the camera;
and identifying the detection image to obtain the size information of the trial carving net holes.
5. The method of claim 1, wherein the sensor unit further comprises a laser sensor, and the enabling the headrest to acquire the size information of the trial carving cells by using the sensor unit, comprises:
transmitting a laser signal to the printing roller engraved with the trial engraving holes by using the laser sensor;
and acquiring the size information of the trial carving mesh according to the echo signal reflected by the plate roller.
6. The method according to any one of claims 1 to 5, wherein after obtaining the target calibration relationship between the size information of the trial engraving cell and the engraving control signal, the method further comprises:
driving the engraving head to engrave the current mesh on the printing roller by using the engraving control signal;
collecting the size information of the current net cave in real time;
and compensating the engraving control signal according to the size information of the current cell and the target calibration relation.
7. The method of claim 6, wherein said compensating said engraving control signal according to said size information of said current cell and said target calibration relationship comprises:
and when the size information of the current net hole is inconsistent with the size information of the preset net hole, the target calibration relation is utilized to compensate the carving control signal in real time.
8. A calibration device, comprising:
the trial engraving module is used for driving the engraving head to reciprocate along the axial direction of the printing roller and simultaneously perpendicular to the cylindrical surface of the printing roller according to an engraving control signal so as to form a trial engraving mesh on the printing roller, wherein the engraving control signal corresponds to the size information of a preset mesh;
the acquisition module is used for controlling the printing roller to rotate and controlling the backup head to move along the axial direction of the printing roller so that the backup head can acquire the size information of the trial carving net hole by using the arranged sensor unit;
and the calibration module is used for acquiring the target calibration relation between the size information of the trial carving pits and the carving control signals.
9. An electronic engraving control system comprising a memory and a processor, the memory having stored therein a computer program, which, when executed by the processor, causes the processor to carry out the steps of the calibration method according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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