CN112355368B - Electric carving control method and device, electric carving control system and storage medium - Google Patents
Electric carving control method and device, electric carving control system and storage medium Download PDFInfo
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- CN112355368B CN112355368B CN202011321365.6A CN202011321365A CN112355368B CN 112355368 B CN112355368 B CN 112355368B CN 202011321365 A CN202011321365 A CN 202011321365A CN 112355368 B CN112355368 B CN 112355368B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/013—Control or regulation of feed movement
- B23Q15/06—Control or regulation of feed movement according to measuring results produced by two or more gauging methods using different measuring principles, e.g. by both optical and mechanical gauging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2452—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces
- B23Q17/2471—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces of workpieces
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
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- Automation & Control Theory (AREA)
- Optics & Photonics (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
The invention relates to an electric carving control method, an electric carving control device, an electric carving control system and a storage medium, wherein a carving control signal is obtained according to a pattern to be processed of the electric carving control system, so that a carving head is controlled to carve a mesh on a moving printing roller; acquiring the size information of a current mesh carved by a carving head at the current moment, the mesh space between the current mesh and a previous mesh carved at the previous moment and the rotating speed of a printing roller at the current moment; the engraving control signal is modulated according to the size information, the mesh space and the rotating speed so as to change the size of the next mesh engraved on the plate roller by the engraving head and the time of engraving the next mesh, and the engraving control signal acting on the next mesh can be fed back and adjusted, so that the purposes of improving the mesh size difference and reducing the mesh space difference are achieved.
Description
Technical Field
The present disclosure relates to the field of electric carving control, and more particularly, to an electric carving control method, an electric carving control device, an electric carving control system, and a 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.
Generally, an electric engraving device engraves according to a preset engraving control signal to form a plurality of fixed-size cells with a certain distance on a plate roller, however, due to the influence of external factors, the size of the cell in the engraving process may have an error from an expected size, and due to the fluctuation of the rotating speed of the plate roller, the distance between each adjacent cell engraved at adjacent time also has a difference.
Disclosure of Invention
In view of the above, it is desirable to provide an electroengraving control method, an electroengraving control apparatus, an electroengraving control system, and a storage medium, which improve cell size difference and reduce the distance difference between adjacent cells, thereby obtaining a desired cell pattern.
An electric carving control method is applied to an electric carving control system, and the method comprises the following steps:
acquiring an engraving control signal according to the pattern to be processed of the electric engraving control system;
controlling the engraving head to engrave a mesh on the moving printing roller according to the engraving control signal;
acquiring the size information of a current mesh carved by the carving head at the current moment, the mesh space between the current mesh and a previous mesh carved at the previous moment and the rotating speed of the plate roller at the current moment;
and modulating the engraving control signal according to the size information, the mesh space and the rotating speed to change the size of the next mesh engraved on the plate roller by the engraving head and the time of engraving the next mesh.
In one embodiment, the engraving control signal includes a first control signal and a second control signal, the first control signal carries size information of cells in the pattern to be processed, the second control signal carries preset intervals of the cells in the pattern to be processed, and the modulating the engraving control signal according to the size information, the cell intervals and the rotation speed includes:
modulating the first control signal according to the size information to change the size of the next cell;
and modulating the second control signal according to the cell distance and the rotating speed to change the time for carving the next cell.
In one embodiment, said modulating said first control signal according to said size information comprises:
comparing the size information with target size information to generate a size calibration signal;
modulating the first control signal according to the size calibration signal.
In one embodiment, modulating the first control signal according to the size calibration signal comprises:
superimposing the size calibration signal to the first control signal to modulate the first control signal.
In one embodiment, the second control signal comprises a sine wave signal, the modulating the second control signal according to the cell spacing and the rotational speed, comprising:
calculating a spacing error according to the mesh spacing and the preset spacing;
calculating a spacing calibration time interval according to the rotating speed and the spacing error;
and changing the time corresponding to the wave trough of the sine wave signal according to the interval calibration time interval, wherein the time is the time when the engraving head engraves the mesh on the plate roller.
In one embodiment, the obtaining the size information of the current cell engraved by the engraving head at the current time and the cell distance between the current cell and the previous cell engraved at the previous time includes:
and acquiring the size information and the cell distance of the current cell through a laser scanning device.
An electric carving control device is applied to an electric carving control system, and the device comprises:
the signal acquisition module is used for acquiring carving control signals according to the pattern to be processed of the electric carving control system;
the control module is used for controlling the engraving head to engrave a mesh on the moving printing roller according to the engraving control signal;
the mesh information acquisition module is used for acquiring the size information of a current mesh carved by the carving head at the current moment and the mesh distance between the current mesh and a previous mesh carved at the previous moment;
the rotating speed acquisition module is used for acquiring the rotating speed of the plate roller at the current moment;
and the signal modulation module is used for modulating the engraving control signal according to the size information, the mesh space and the rotating speed so as to change the size of the next mesh engraved on the plate roller by the engraving head and the time for engraving the next mesh.
An electroengraving control system, the system comprising:
an engraving head;
a printing roller;
a control device connected to the engraving head and the plate roller, respectively, the control device being configured to:
acquiring an engraving control signal according to the pattern to be processed of the electric engraving control system;
controlling the engraving head to engrave a mesh on the moving printing roller according to the engraving control signal;
acquiring the size information of a current mesh carved by the carving head at the current moment, the mesh space between the current mesh and a last mesh carved at the last moment and the rotating speed of the plate roller at the current moment;
and modulating the engraving control signal according to the size information, the mesh space and the rotating speed to change the size of the next mesh engraved on the plate roller by the engraving head and the time of engraving the next mesh.
An electric carving 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 is enabled to execute the steps of the electric carving control method.
A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the electronic carving control method according to any one of the above.
According to the electric carving control method, the carving control signal is obtained according to the pattern to be processed of the electric carving control system, and then the carving head is controlled to carve the mesh on the moving printing roller; acquiring the size information of a current mesh carved by a carving head at the current moment, the mesh space between the current mesh and a previous mesh carved at the previous moment and the rotating speed of a printing roller at the current moment; the carving control signal is modulated according to the size information, the mesh distance and the rotating speed to change the size of the next mesh carved on the plate roller by the carving head and the carving time of the next mesh, and the carving control signal acting on the next mesh can be fed back and adjusted, so that the purposes of improving the mesh size difference and reducing the mesh distance difference are achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the description of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1(a) is a schematic application environment diagram of an engraving control method according to an embodiment of the present invention;
fig. 1(b) is a schematic application environment diagram of an engraving control method according to another embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating an electrical carving control method according to an embodiment of the present invention;
FIG. 3(a) is a schematic diagram of a roller rotation speed curve under normal working conditions;
FIG. 3(b) is a schematic diagram of the roller rotation speed curve when mechanical resonance occurs;
FIG. 4 is a flowchart of a method of modulating a first control signal according to size information in one embodiment;
FIG. 5 is a flowchart illustrating a method for modulating a second control signal according to cell spacing and rotational speed, according to an embodiment;
FIG. 6 is a graphical illustration of a sine wave signal before conditioning and a sine wave signal after conditioning;
FIG. 7 is a waveform diagram of a sine wave signal in the engraving control signal;
FIG. 8 is a block diagram of an electrical carving control device in one embodiment;
FIG. 9 is a block diagram of an exemplary embodiment of an electrographic control system.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the 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 control signal may be referred to as a second control signal, and similarly, a second control signal may be referred to as a first control signal, without departing from the scope of the present application. The first control signal and the second control signal are both control signals, but they are not the same control signal.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
Fig. 1(a) and fig. 1(b) are schematic diagrams of two application environments of a driving method in an embodiment of the present application. When the electric carving machine works normally, the main shaft of the electric carving machine 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 industrial personal computer in the electric carving control system converts the patterns to be processed by the electric carving machine into digital image information, the driving module converts digital signals into analog signals through the digital-analog converter, and the carving head is controlled to carve carving points with different sizes and depths on the surface of the plate roller copper layer at fixed frequency (4K-12 KHz), so that a mesh point is formed.
Fig. 2 is a schematic flow chart of an electrical discharge machining control method according to an embodiment of the present invention. In one embodiment, the method for controlling electroengraving includes steps S210 to S240.
And step S210, acquiring carving control signals according to the pattern to be processed of the electric carving control system.
The image engraved on the plate roller can comprise a plurality of groups of patterns to be processed, and the plurality of groups of patterns to be processed can be engraved for multiple times. The pattern to be processed engraved in one engraving process may include a plurality of cells that surround the plate roller and are distributed at equal intervals, and the plurality of cells may be distributed spirally or circumferentially around the plate roller, for example.
And S220, controlling the engraving head to engrave the mesh on the moving plate roller according to the engraving control signal.
Specifically, the plate roller rotates around the central shaft of the plate roller, and the engraving head reciprocates perpendicular to the cylindrical surface of the plate roller while moving along the axial direction of the plate roller under the driving of the engraving control signal to form a mesh on the plate roller while rotating the plate roller.
Step S230, obtaining the size information of the current cell engraved by the engraving head at the current time, the cell distance between the current cell and the previous cell engraved at the previous time, and the rotation speed of the printing roller at the current time.
The size information and the cell spacing can be detected in a laser scanning mode; the rotating speed of the plate roller can be detected by a speed sensor.
And S240, modulating the carving control signal according to the size information, the mesh space and the rotating speed to change the size of the next mesh carved on the plate roller by the carving head and the time for carving the next mesh.
It can be understood that, on the one hand, according to the size information of the current cell and the size information of the cell on the pattern to be processed, the size error of the current cell can be obtained, and then the engraving control signal is modulated according to the size error to compensate the influence of the external factors on the size of the cell, so that when the next cell is engraved according to the modulated engraving control signal, the size of the next cell is closer to the size of the cell on the pattern to be processed, wherein the compensation can be positive compensation for increasing the size of the next cell or negative compensation for decreasing the size of the next cell.
On the other hand, according to the distance between the current cell and the previous cell and the preset distance between the two corresponding cells in the pattern to be processed, the distance error between the current cell and the previous cell can be obtained, and then the engraving control signal is modulated according to the distance error and the rotating speed of the printing roller at the current moment so as to compensate the influence of the rotating speed change of the printing roller on the position of the cell, so that when the next cell is engraved according to the modulated engraving control signal, the distance between the next cell and the current cell and the distance between the two corresponding cells on the pattern to be processed are closer, wherein the compensation can be positive compensation for increasing the distance between the current cell and the next cell or negative compensation for decreasing the distance between the current cell and the next cell.
Specifically, as shown in fig. 3(a), the plate roller rotation speed is relatively stable in a normal state and the fluctuation is small. Due to the influence of environmental factors, the plate roller generates mechanical resonance in the rotation process, which results in large fluctuation of the rotation speed of the plate roller, as shown in fig. 3 (b). Therefore, the moment of carving the next mesh can be adjusted according to the mesh space between the current mesh and the previous mesh and the real-time rotating speed of the printing roller, and the difference between the space between the next mesh and the current mesh and the preset space corresponding to the two meshes on the pattern to be processed can be reduced.
According to the embodiment of the invention, the carving control signal acting on the next cell is fed back and adjusted through the size information of the current cell, the cell distance between the current cell and the previous cell and the rotating speed of the plate roller, so that the purposes of improving the cell size difference and reducing the cell distance difference are achieved.
In one embodiment, the engraving control signal includes a first control signal and a second control signal, the first control signal carries the size information of the cells in the pattern to be processed, and the second control signal carries the preset spacing of the cells in the pattern to be processed. The modulating the engraving control signal according to the size information, the cell spacing and the rotating speed specifically comprises: modulating the first control signal according to the size information to change the size of the next cell; and modulating the second control signal according to the interval of the cells and the rotating speed to change the time for engraving the next cell.
It can be understood that, when the engraving control signal is obtained according to the pattern to be processed of the electrical engraving control system, the first control signal can be obtained according to the size information of the cells in the pattern to be processed, then the first control signal is modulated according to the size information of the current engraved cell at the current moment, the second control signal can be obtained according to the preset interval of the cells in the pattern to be processed, and then the second control signal is modulated according to the interval between the current cell and the previous cell and the rotating speed of the printing roller at the current moment.
Further, on one hand, according to the size information of the current cell and the size information of the cell on the pattern to be processed, the size error of the current cell can be obtained, and then the first control signal is modulated according to the size error to compensate the influence of the external factors on the size of the cell, so that when the modulated first control signal is used for engraving a next cell, the size of the next cell is closer to the size of the cell on the pattern to be processed. On the other hand, according to the distance between the current cell and the previous cell and the preset distance between the two corresponding cells in the pattern to be processed, the distance error between the current cell and the previous cell can be obtained, and then the second control signal is modulated according to the distance error and the rotating speed of the plate roller at the current moment so as to compensate the influence of the rotating speed change of the plate roller on the position of the cell, so that when the next cell is carved by the modulated second control signal, the distance between the next cell and the current cell and the distance between the two corresponding cells on the pattern to be processed can be obtained.
In the above embodiment, the current cell may be a second cell engraved on the plate roller in time sequence, and each cell to be subsequently engraved is made according to the modulated engraving control signal from the second cell, so that the size difference of the cells to be subsequently engraved and the distance difference between the cells are reduced.
According to the embodiment of the invention, a first control signal is obtained according to the size information of the pits in the pattern to be processed, a second control signal is obtained according to the preset interval of the pits in the pattern to be processed, then the first control signal is fed back and modulated by using the size information of the current pit to change the size of the next pit to be engraved, so that the size difference of the pits is improved, and a second control signal is fed back and modulated by using the interval between the current pit and the previous pit and the rotating speed of the plate roller to change the time for engraving the next pit, so that the interval difference of the pits is reduced.
In one embodiment, as shown in fig. 4, modulating the first control signal according to the size information includes steps S410 to S420.
Step S410, comparing the size information with the target size information to generate a size calibration signal.
Step S420, modulate the first control signal according to the size calibration signal.
Specifically, the size information of the current cell may be compared with the target size information to obtain size error information and further generate a size calibration signal, and then the first control signal may be modulated according to the size calibration signal. The target size information may be size information of the current cell corresponding to the pattern to be processed.
It can be understood that modulating the first control signal according to the size calibration signal can compensate the influence of the external factors on the size of the cell, so that when the modulated first control signal is used for engraving the next cell, the size of the next cell is closer to the size of the cell on the pattern to be processed.
According to the embodiment of the invention, the size information is compared with the target size information to generate the size calibration signal, and the first control signal is modulated according to the size calibration signal, so that the influence of external factors on the size of the net holes is compensated when next carving is carried out according to the modulated first control signal, the method is simple, and the size difference of the net holes can be effectively reduced.
In one embodiment, modulating the first control signal according to the size calibration signal comprises: the size calibration signal is superimposed on the first control signal to modulate the first control signal.
It will be appreciated that superimposing the size calibration signal to the first control signal may increase or decrease the amplitude of the first control signal, thereby adjusting the size of the cells engraved with the new first control signal. The first control signal may be a dc signal.
According to the embodiment of the invention, the size of the next cell engraved on the plate roller by the engraving head is changed by superposing the size calibration signal to the first control signal, wherein the size calibration signal carries the size information difference generated by comparing the size information with the target size information, the first control signal is directly compensated in a signal superposition mode, the calculated amount is small, and the reaction time is short.
In one embodiment, the second control signal comprises a sine wave signal. As shown in fig. 5, modulating the second control signal according to the cell pitch and the rotation speed includes steps S510 to S530.
Step S510, calculating a pitch error according to the cell pitch and a preset pitch.
And step S520, calculating a distance calibration time interval according to the rotating speed and the distance error.
Specifically, the pitch error can be regarded as length information, and a time value, namely the pitch calibration time interval, can be obtained by dividing the pitch error by the rotating speed.
Step S530, changing the time corresponding to the wave trough of the sine wave signal according to the interval calibration time interval, wherein the time is the time when the engraving head engraves the mesh on the plate roller.
Specifically, a sine wave signal can be obtained through a preset interval of the cells in the pattern to be processed, the time corresponding to the wave trough of the sine wave signal is the time when the engraving head engraves the cells on the plate roller, the preset interval is fixed, and the time corresponding to the wave trough of the sine wave signal is also fixed. Due to the fluctuation of the rotating speed of the plate roller, if the next mesh point is engraved on the plate roller at the original moment, the difference between the mesh point distance between the engraved next mesh point and the current mesh point and the preset distance may be caused. And the interval error between the current screen hole and the previous screen hole and the preset interval is calculated firstly, and the interval calibration time interval is obtained by combining the real-time detection of the rotating speed of the printing roller, so that the time corresponding to the wave trough of the sine wave signal is adjusted according to the interval calibration time interval, and the value of the interval between the next screen hole and the current screen hole engraved by the engraving head at the adjusted time is closer to the value of the preset interval.
Fig. 6 schematically shows curves of a sine wave signal before adjustment and a sine wave signal after adjustment, where a trough position of the sine wave signal before adjustment is at time t1, and a trough position of the sine wave signal after adjustment is at time t 2. The sine wave signal may comprise a series of signal points, as shown in fig. 7, wherein in the sine wave signal, the time Tm corresponding to the signal point at the valley position is the time when the engraving head contacts the plate roller, i.e. the time when the engraving head engraves the cells, so that the time when the engraving head engraves the next cell can be changed by adjusting the time at the valley position, so that the engraving head engraves the next cell at the specified position.
The time intervals corresponding to all signal points in the unadjusted sine wave signal are the same, and when the time corresponding to the wave trough position of the sine wave signal is changed, the time corresponding to all the signal points can be changed to adjust the time corresponding to the wave trough position of the sine wave signal for engraving the next mesh to be engraved. The time corresponding to each adjacent signal point in all the signal points can be adjusted at the same time interval.
In one embodiment, the pitch error may be a positive or negative number, so as to adjust the time corresponding to the trough to be advanced or delayed.
According to the embodiment of the invention, the interval error is calculated according to the mesh interval and the preset interval, the interval calibration time interval is calculated by combining the rotating speed, and the time corresponding to the wave trough of the sine wave signal is changed according to the interval calibration time interval.
In one embodiment, obtaining the size information of the current cell engraved by the engraving head at the current moment, and the cell distance between the current cell and the last cell engraved at the last moment may include: and acquiring the size information and the cell distance of the current cell through a laser scanning device.
The embodiment of the invention detects through the laser scanning device to obtain the size information and the cell spacing, has simple and direct method, and can quickly obtain the detection data.
FIG. 8 is a block diagram of an electrical carving control device in an embodiment of the invention, the device including: a signal obtaining module 801, configured to obtain an engraving control signal according to a pattern to be processed of the electrical engraving control system; the control module 802 is used for controlling the engraving head to engrave a mesh hole on the moving printing roller according to the engraving control signal; a cell information acquiring module 803, configured to acquire size information of a current cell engraved by the engraving head at the current time and a cell distance between the current cell and a previous cell engraved at the previous time; a rotating speed obtaining module 804, configured to obtain a rotating speed of the plate roller at the current time; and the signal modulation module 805 is used for modulating the engraving control signal according to the size information, the cell distance and the rotating speed so as to change the size of the next cell engraved on the plate roller by the engraving head and the time for engraving the next cell.
The signal obtaining module 801 is connected to the control module 802 and the signal modulating module 805, and the signal modulating module 805 is connected to the cell information obtaining module 803, the rotation speed obtaining module 804 and the control module 802.
The electric carving control device in the embodiment of the invention utilizes the size information of the current screen hole, the screen hole distance between the current screen hole and the previous screen hole and the rotating speed of the printing roller to feed back and adjust the carving control signal acting on the next screen hole, thereby achieving the purposes of improving the size difference of the screen holes and reducing the distance difference of the screen holes.
FIG. 9 is a block diagram of an electrical carving control system in an embodiment of the invention, the system including: an engraving head 901; a plate roller 902; a control device 903 connected to the engraving head 901 and the plate roller 902, respectively, the control device 903 being configured to: acquiring carving control signals according to the pattern to be processed of the electric carving control system; controlling the engraving head to engrave the mesh on the moving printing roller according to the engraving control signal; acquiring the size information of a current mesh carved by a carving head at the current moment, the mesh space between the current mesh and a previous mesh carved at the previous moment and the rotating speed of a printing roller at the current moment; and modulating the engraving control signal according to the size information, the mesh space and the rotating speed to change the size of the next mesh engraved on the plate roller by the engraving head and the time of engraving the next mesh.
The engraving control system in the embodiment of the invention can modulate the engraving control signal according to the size information, the mesh space and the rotating speed, thereby changing the size of the next mesh engraved on the plate roller by the engraving head and the time for engraving the next mesh, reducing the size difference and the space difference of the meshes, and finally engraving to obtain the engraving pattern meeting the requirements.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic depictions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An electric carving control method is applied to an electric carving control system, and the method comprises the following steps:
acquiring carving control signals according to the pattern to be processed of the electric carving control system;
controlling the engraving head to engrave a mesh on the moving printing roller according to the engraving control signal;
acquiring the size information of a current mesh carved by the carving head at the current moment, the mesh space between the current mesh and a previous mesh carved at the previous moment and the rotating speed of the plate roller at the current moment; modulating the engraving control signal according to the size information, the mesh space and the rotating speed to change the size of the next mesh engraved on the plate roller by the engraving head and the time of engraving the next mesh;
the engraving control signal comprises a first control signal and a second control signal, the first control signal carries size information of cells in the pattern to be processed, the second control signal carries preset intervals of the cells in the pattern to be processed, and the engraving control signal is modulated according to the size information, the cell intervals and the rotating speed, and the method comprises the following steps:
modulating the first control signal according to the size information to change the size of the next cell;
and modulating the second control signal according to the cell distance and the rotating speed to change the time for carving the next cell.
2. The method of claim 1, wherein said modulating the first control signal according to the size information comprises:
comparing the size information with target size information to generate a size calibration signal;
modulating the first control signal according to the size calibration signal.
3. The method of claim 2, wherein said modulating the first control signal according to the size calibration signal comprises:
superimposing the size calibration signal to the first control signal to modulate the first control signal.
4. The method of claim 3, wherein the second control signal comprises a sine wave signal, and wherein modulating the second control signal as a function of the cell spacing and the rotational speed comprises:
calculating a spacing error according to the mesh spacing and the preset spacing;
calculating a pitch calibration time interval according to the rotating speed and the pitch error;
and changing the time corresponding to the wave trough of the sine wave signal according to the interval calibration time interval, wherein the time is the time when the engraving head engraves the mesh on the plate roller.
5. The method of claim 1, wherein the obtaining of the size information of the current cell engraved by the engraving head at the current time and the cell distance between the current cell and the previous cell engraved at the previous time comprises:
and acquiring the size information and the cell distance of the current cell through a laser scanning device.
6. An electric carving control device, characterized in that, be applied to electric carving control system, the device includes:
the signal acquisition module is used for acquiring carving control signals according to the pattern to be processed of the electric carving control system;
the control module is used for controlling the engraving head to engrave a mesh on the moving printing roller according to the engraving control signal;
the mesh information acquisition module is used for acquiring the size information of a current mesh carved by the carving head at the current moment and the mesh distance between the current mesh and a previous mesh carved at the previous moment;
the rotating speed acquisition module is used for acquiring the rotating speed of the plate roller at the current moment;
the signal modulation module is used for modulating the carving control signal according to the size information, the mesh space and the rotating speed so as to change the size of the next mesh carved on the plate roller by the carving head and the time of carving the next mesh;
the engraving control signal comprises a first control signal and a second control signal, the first control signal carries size information of cells in the pattern to be processed, the second control signal carries preset intervals of the cells in the pattern to be processed, and the engraving control signal is modulated according to the size information, the cell intervals and the rotating speed, and the method comprises the following steps:
modulating the first control signal according to the size information to change the size of the next cell;
and modulating the second control signal according to the cell distance and the rotating speed to change the time for carving the next cell.
7. An electrocarving control system, characterized in that the system comprises:
an engraving head;
a printing roller;
a control device connected to the engraving head and the plate roller, respectively, the control device being configured to:
acquiring an engraving control signal according to the pattern to be processed of the electric engraving control system;
controlling the engraving head to engrave a mesh on the moving printing roller according to the engraving control signal;
acquiring the size information of a current mesh carved by the carving head at the current moment, the mesh space between the current mesh and a last mesh carved at the last moment and the rotating speed of the plate roller at the current moment; modulating the engraving control signal according to the size information, the mesh space and the rotating speed to change the size of the next mesh engraved on the plate roller by the engraving head and the time of engraving the next mesh;
the engraving control signal comprises a first control signal and a second control signal, the first control signal carries size information of cells in the pattern to be processed, the second control signal carries preset intervals of the cells in the pattern to be processed, and the engraving control signal is modulated according to the size information, the cell intervals and the rotating speed, and the method comprises the following steps:
modulating the first control signal according to the size information to change the size of the next cell;
and modulating the second control signal according to the cell distance and the rotating speed to change the time for carving the next cell.
8. An electric engraving control system comprising a memory and a processor, the memory having stored therein a computer program, the computer program, when executed by the processor, causing the processor to perform the steps of the electric engraving control method according to any one of claims 1 to 5.
9. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing the steps of the electronic carving control method according to any one of claims 1 to 5.
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