CN113370652A - Method, device, equipment and storage medium for controlling UV lamp to be turned on and off - Google Patents
Method, device, equipment and storage medium for controlling UV lamp to be turned on and off Download PDFInfo
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- CN113370652A CN113370652A CN202010802868.9A CN202010802868A CN113370652A CN 113370652 A CN113370652 A CN 113370652A CN 202010802868 A CN202010802868 A CN 202010802868A CN 113370652 A CN113370652 A CN 113370652A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0406—Drying webs by radiation
- B41F23/0409—Ultra-violet dryers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/045—Drying sheets, e.g. between two printing stations by radiation
- B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/16—Programming systems for automatic control of sequence of operations
Abstract
The invention belongs to the technical field of printing, and particularly discloses a method, a device, equipment and a storage medium for controlling the turning on and off of a UV lamp. The method comprises the following steps: obtaining a left UV lamp offset value OLAnd right UV lamp offset value OR(ii) a Acquiring a first printing starting position and an image length L of an image to be printed in a printing direction; and controlling the printing trolley to start from the first printing starting position to perform ink jet printing along the printing direction, and controlling the left UV lamp and the right UV lamp to be turned on/off. According to the embodiment of the invention, on the premise of realizing the integration of printing and curing, the on/off control of the UV lamp is realized according to the printing direction and the parameters, so that the conditions of printing medium damage, product quality reduction and the like caused by the early or late turning on of the UV lamp are avoided. At the same time, the left UV lamp offset value O is confirmedLAnd right UV lamp offset value OROnly needs to be aligned once, avoids errors caused by multiple alignments, simplifies control logic and improvesEfficiency.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a method, a device, equipment and a storage medium for controlling the turning on and off of a UV lamp.
Background
With the increasing of the spiritual culture life, people have higher and higher artistic appreciation and quality requirements, including the requirements on printed products. In order to improve the quality and glossiness of printed products, a layer of gloss oil is generally sprayed on the surfaces of the printed products, so that the glossiness of the products can be improved, ink fading and scratching on the surfaces of the printed products can be prevented, the printed products have smoother surfaces, more saturated colors and more delicate images after being printed with the gloss oil, and the printed products are higher-grade than the products without the gloss oil.
However, the varnish printed on the product is difficult to cure under natural conditions, and in order to accelerate the curing of the varnish, CN109049969A discloses a UV curing machine. As shown in fig. 1, the UV curing machine includes: conveyer belt 1, a plurality of cage 2, a plurality of UV lamp 3, electric limit 4, servo driver 5 and PLC controller 6, this UV solidification machine's concrete control method includes: the printing material enters the conveyor belt 1 from the left side of the conveyor belt 1. The printing material is continuously transmitted from left to right, and the electric limit 4 is used for detecting whether the printing material is about to enter into UV curing or not and is used as an entrance starting point for detecting the printing material. When the printing material reaches the lower part of the UV lamp 3, the printing material is irradiated by the ultraviolet rays emitted by the UV lamp 3, so that the pattern on the printing material is rapidly cured. Wherein the turning on and off of the UV lamp 3 is controlled by: when the conveyer belt 1 continues to convey the nth printing stock to the right, the nth UV lamp 3 is started after B + (n-1) A + (n-1) C pulse widths, and the nth UV lamp passes B + (n-1) A + (n-1) C + Ln+Ln+1The nth UV lamp 3 is turned off after + M pulse widths, and so on, wherein one pulse width is the width of the conveyor belt 1 passing through within one pulse period T, the distance from the electric limit 4 to the left side of the leftmost UV lamp 3 is B pulse widths, the width of the UV lamp 3 is D pulse widths, the distance between two adjacent cages 2 is C pulse widths, the width of each cage 2 is set to be A pulse widths, and L pulse widths are set to be LnWidth of nth substrate, Ln+1Is the width of the (n + 1) th substrate.
The UV curing machine of figure 1 can be according to the start-stop time of the width control UV lamp of stock through UV lamp 3, can obtain the width of every stock by real-time update, when the interval between two adjacent stocks is less than the width of UV lamp 3, can adapt to the start-up time who prolongs UV lamp 3, has realized intelligent opening and stopping, effectively practices thrift the production energy, thereby prevents that UV lamp 3 from opening and leading to the fire incident that the high temperature causes always. Although the gloss oil solidification machine of fig. 1 can realize high-efficient, quick solidification and can intelligent control opening and closing of UV lamp, this solidification machine can only solidify the product that prints completely, can not solidify at the printing in-process, and this solidification machine can't use to the printing product that needs quick solidification, prints complete back at the product and carries the solidification machine again simultaneously, has leaded to printing efficiency's reduction, and the solidification that fails in time has also led to printing the decline of product quality.
In order to solve the technical problem of the above technical solution, CN111016458A discloses a technical solution as shown in fig. 2. Specifically, the distances between the left UV lamp and the leftmost and rightmost nozzles in the nozzles are acquired by printing a test chart and are recorded as a left lamp left offset L1 and a left lamp right offset L2, and the distances between the right UV lamp and the leftmost and rightmost nozzles in the nozzles are recorded as a right lamp left offset R1 and a right lamp right offset R2, and the opening and closing positions and timings of the UV lamp are determined by a left lamp left offset L1, a left lamp right offset L2, a right lamp left offset R1, and a right lamp right offset R2, but when the leftmost and rightmost nozzles in the nozzles do not discharge ink, the method shown in fig. 2 has an error, so that the control accuracy of opening/closing the UV lamp is affected, and the quality of a printed product is affected. Meanwhile, the method shown in fig. 2 requires at least 4 times of alignment after the test chart is printed to obtain the parameters, which is not efficient and is prone to cause errors.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for controlling turning on and off of a UV lamp, so as to improve the control accuracy of turning on/off of the UV lamp on the premise of implementing printing and curing.
In a first aspect, an embodiment of the present invention provides a method for controlling on and off of a UV lamp, where the UV lamp includes a left UV lamp installed on a left side of a nozzle fixing plate and a right UV lamp installed on a right side of the nozzle fixing plate, the nozzle fixing plate is disposed on a printing cart, and the printing cart is further provided with a grating decoder, where the method includes:
s10: obtaining a left UV lamp offset value OLAnd right UV lamp offset value OR(ii) a Wherein the left UV lamp offset value OLWhen the left UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position; the right UV lamp offset value ORWhen the right UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position;
s20: acquiring a first printing starting position and an image length L of an image to be printed in a printing direction; wherein, the raster value corresponding to the first printing initial position is recorded as a first raster value X1；
S30: controlling the printing trolley to start ink jet printing from the first printing starting position along the printing direction, and controlling the left UV lamp and the right UV lamp to be turned on/off; wherein the first raster value X is based on the printing direction1The image length L and the left UV lamp offset value OLControl left UV lamp on/off; according to the printing direction, the first raster value X1The image length L and the right UV lamp offset value ORControls the right UV lamp to turn on/off.
According to the embodiment of the invention, the left UV lamp arranged on the left side of the spray head fixing plate and the right UV lamp arranged on the right side of the spray head fixing plate can be used for curing the printing ink on the printing medium in real time during printing, so that the printing and curing are integrated. At the same time, by obtaining the left UV lamp offset value OLAnd right UV lamp offset value ORAnd high-precision control of the turning on/off of the UV lamp is realized. Specifically, the left UV lamp offset value OLAnd right UV lamp offset value ORMainly depends on the relative position relationship between the raster decoder and the left UV lamp and the right UV lamp, and has no necessary connection with the position relationship between the nozzles. Therefore, in different printing tasks, the ink cannot be developed due to the fact that whether the nozzles discharge ink or notOffset value O of left UV lampLAnd right UV lamp offset value ORAnd the adaptation degree between the UV lamp and the printed image, thereby avoiding the UV lamp from being turned on/off in advance or in a lagging way, realizing the high-precision control on the turning on/off of the UV lamp in different printing tasks, and further improving the product quality. At the same time, since the left UV lamp offset value O is determinedLAnd right UV lamp offset value ORThe relative position relation between the grating decoder and the grating decoder is only needed to be determined, namely, only one-time alignment is needed, multiple times of alignment is not needed, the problem that errors are too large due to multiple times of alignment is avoided, and meanwhile, the process is simplified, so that the efficiency is improved.
Preferably, at S10: obtaining a left UV lamp offset value OLAnd right UV lamp offset value ORIn, comprising:
s11: printing a test image, the test image comprising a vertical line segment, the vertical line segment orthogonal to the printing direction; recording the grating value corresponding to the position of the vertical line segment as a second grating value X2；
S12: controlling the printing trolley to move to enable the left UV lamp to be located at the position of the vertical line segment, controlling the grating decoder to read the current grating value, and recording the current grating value as a third grating value XL；
S13: according to the third grating value XLAnd said second grating value X2The difference between them determines the left UV lamp offset value OL；
S14: controlling the printing trolley to move to enable the right UV lamp to be located at the position of the vertical line segment, controlling the grating decoder to read the current grating value, and recording the current grating value as a fourth grating value XR；
S15: according to the fourth grating value XRAnd said second grating value X2The difference between them determines the right UV lamp offset value OR。
According to the embodiment of the invention, a test image comprising a vertical line segment is printed, the left UV lamp is moved to the position of the vertical line segment, then the current grating value is read through the grating decoder, and the light corresponding to the vertical line segment and the grating value obtained through reading are usedDifference between the grid values to determine the left UV lamp offset value O with high accuracyLDetermining the right UV lamp offset value O based on similar principlesR. Thus, embodiments of the present invention determine the left UV lamp offset value O with greater accuracyLAnd right UV lamp offset value ORTo further improve the control accuracy for the turning on/off of the UV lamp.
Preferably, at S13: according to the third grating value XLAnd said second grating value X2The difference between them determines the left UV lamp offset value OLIn, comprising: determining the left UV lamp offset value O according to a first formulaLThe first formula is: o isL＝max{XL,X2}-min{XL,X2}；
At S15: according to the fourth grating value XRAnd said second grating value X2The difference between them determines the right UV lamp offset value ORIn, comprising: determining the right UV lamp offset value O according to a second formulaRThe second formula is: o isR＝max{XR,X2}-min{XR,X2}。
According to the embodiment of the invention, the calculated offset value O of the left UV lamp is obtained through the first formula and the second formulaLAnd right UV lamp offset value ORThe values are positive values and are uniform in sign, so that subsequent operation is facilitated.
Preferably, the printing direction is printing from right to left, and the printing direction is a direction in which the raster value increases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s31: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S32: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1-OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1+L-OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1+ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1+L+ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
In the embodiment of the invention, the fifth grating value X is read by the grating decoder5And considering the printing direction and the change direction of the raster value to thereby obtain a fifth raster value X5The left UV lamp and the right UV lamp are accurately controlled to be turned on/off.
Preferably, the printing direction is from left to right printing, and the printing direction is a direction in which the raster value decreases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s33: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S34: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1-OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1-L-OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1+ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1-L+ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
In the embodiment of the invention, the fifth grating value X is read by the grating decoder5And considering the printing direction and the change direction of the raster value to thereby obtain a fifth raster value X5The left UV lamp and the right UV lamp are accurately controlled to be turned on/off.
Preferably, the printing direction is printing from right to left, and the printing direction is a direction in which the raster value decreases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s35: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S36: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1+OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1-L+OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1-ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1-L-ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
In the embodiment of the invention, the fifth grating value X is read by the grating decoder5And considering the printing direction and the change direction of the raster value to thereby obtain a fifth raster value X5The left UV lamp and the right UV lamp are accurately controlled to be turned on/off.
Preferably, the printing direction is from left to right printing, and the printing direction is a direction in which the raster value increases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s37: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S38: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1+OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1+L+OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1-ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1+L-ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
In the embodiment of the invention, the fifth grating value X is read by the grating decoder5And considering the printing direction and the change direction of the raster value to thereby obtain a fifth raster value X5The left UV lamp and the right UV lamp are accurately controlled to be turned on/off.
In a second aspect, an embodiment of the present invention provides a device for controlling on and off of a UV lamp, where the UV lamp includes a left UV lamp installed on a left side of a nozzle fixing plate and a right UV lamp installed on a right side of the nozzle fixing plate, the nozzle fixing plate is disposed on a printing cart, the printing cart is further provided with a grating decoder, and the device includes:
an offset value acquisition module for acquiring an offset value O of the left UV lampLAnd right UV lamp offset value OR(ii) a Wherein the left UV lamp offset value OLWhen the left UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position; the right UV lamp offset value ORWhen the right UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position;
the printing parameter acquisition module is used for acquiring a first printing starting position and the image length L of an image to be printed in the printing direction; wherein, the raster value corresponding to the first printing initial position is recorded as a first raster value X1；
The control module is used for controlling the printing trolley to start from the first printing starting position to perform ink jet printing along the printing direction, and is also used for controlling the left UV lamp and the right UV lamp to be turned on/off; wherein the control module is used for controlling the first raster value X according to the printing direction1The image length L and the left UV lamp offset value OLOne or more of the controls control the left UV lamp on/off; the control module is used for controlling the first raster value X according to the printing direction1The image length L and the right UV lamp offset value ORControls the right UV lamp to turn on/off.
In a third aspect, an embodiment of the present invention provides a printing apparatus including: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement any of the methods of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which computer program instructions are stored, which when executed by a processor implement any one of the methods according to the first aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a UV curing machine in the prior art.
Fig. 2 is a schematic diagram of a UV lamp switch positioning control in the prior art.
Fig. 3 is a schematic view illustrating an installation of a UV lamp according to an embodiment of the present invention.
Fig. 4 is a flowchart illustrating a method for controlling turning on and off of a UV lamp according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a method for obtaining a left UV lamp offset value and a right UV lamp offset value according to an embodiment of the present invention.
Fig. 6A is a schematic diagram of acquiring a left UV lamp offset value and a right UV lamp offset value from a test image according to an embodiment of the present invention.
Fig. 6B is a schematic diagram of acquiring a left UV lamp offset value and a right UV lamp offset value from a test image according to an embodiment of the present invention.
Fig. 6C is a schematic diagram of acquiring a left UV lamp offset value and a right UV lamp offset value from a test image according to an embodiment of the present invention.
Fig. 7A is a schematic diagram of controlling the UV lamp to turn on and off according to an embodiment of the present invention.
Fig. 7B is a schematic diagram of controlling the UV lamp to turn on and off according to an embodiment of the present invention.
Fig. 7C is a schematic diagram of controlling the UV lamp to turn on and off according to an embodiment of the present invention.
Fig. 7D is a schematic diagram of controlling the UV lamp to turn on and off according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of an apparatus for controlling on and off of a UV lamp according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in 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 invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In particular, the terms "left" and "right" are used herein in a relative positional relationship.
Fig. 3 is a schematic view illustrating an installation manner of a UV lamp according to an embodiment of the invention. The UV lamp comprises a left UV lamp 31 arranged on the left side of the nozzle fixing plate 20 and a right UV lamp 32 arranged on the right side of the nozzle fixing plate 20, the nozzle fixing plate is arranged on the printing trolley 40, and the printing trolley is further provided with a grating decoder 50. It is apparent that the mounting position of the raster decoder 50 is not limited to the position exemplarily shown in fig. 3, but may be any position on the print carriage 40. It should be understood that, when a scanning printing is performed, the printing cart 40 moves in the horizontal direction shown in fig. 3, i.e., the left and right sides are referred to in this application as relative to the scanning printing direction of the printing cart 40.
UV (Ultra-Violet) lamps, also known as UV lamps, are used to emit light of a specific wavelength to cure ink on the print medium.
The raster decoder is a sensor for detecting displacement, and when the printing trolley moves to different positions, different raster values are read through the raster decoder.
The head fixing plate 20 is also provided with a head for jetting ink, which is generally disposed between the left UV lamp 31 and the right UV lamp 32, and is generally spaced apart from the UV lamps when mounted. Taking the installation as shown in fig. 3 as an example, if the on/off of the UV lamp is controlled at the same time as the start/end of printing, it may cause the UV lamp to be turned on/off early or late to cause damage to the printing medium or degradation in the quality of the final product. Therefore, accurate positioning of the on and off positions of the UV lamp is required.
Referring to fig. 4, a flowchart of a method for controlling turning on and off of a UV lamp according to an embodiment of the present invention is shown.
S10: obtaining a left UV lamp offset value OLAnd a right UV lampOffset value OR(ii) a Wherein the left UV lamp offset value OLWhen the left UV lamp is positioned at a first position, reading a difference value between an obtained grating value and a grating value corresponding to the first position by a grating decoder; right UV lamp offset value ORWhen the right UV lamp is located at the first position, the grating decoder reads the difference between the obtained grating value and the grating value corresponding to the first position.
S20: acquiring a first printing starting position and an image length L of an image to be printed in a printing direction; note that the raster value corresponding to the first print start position is a first raster value X1.
S30: controlling the printing trolley to start to perform ink jet printing along the printing direction from the first printing starting position, and controlling the left UV lamp and the right UV lamp to be turned on/off; wherein the left UV lamp is controlled to be turned on/off according to one or more of a printing direction, a first raster value X1, an image length L, and a left UV lamp offset value OL; the right UV lamp is controlled to be turned on/off according to one OR more of the printing direction, the first raster value X1, the image length L, and the right UV lamp offset value OR.
As mentioned above, when the carriage is located at different positions, the raster values read by the raster decoder are different, that is, when the raster decoder is located at different positions, the raster values read by the raster decoder are different. As shown in fig. 3, the left UV lamp 31 and the raster decoder 50 are located at different positions on the printing carriage. Therefore, when the left UV lamp 31 is located at a certain position, the raster value corresponding to the certain position is not equal to the raster value read by the raster decoder 50, and the difference between the raster value corresponding to the certain position and the raster value read by the raster decoder 50 is the left UV lamp offset value OL. Similarly, when the right UV lamp 32 is located at a certain position, the difference between the raster value corresponding to the certain position and the raster value read by the raster decoder 50 is the right UV lamp offset value OR。
The first print start position refers to a start position when inkjet printing is performed, and the first print start position can be acquired by print setting parameters. When printing, the nozzle performs ink jet printing along the printing direction from the first printing starting position, and the finally formed printing image has a certain length in the printing direction, and the length is equal to the image length L of the image to be printed in the printing direction. The image length L may be obtained by an image to be printed or print data.
According to the embodiment of the invention, the left UV lamp arranged on the left side of the spray head fixing plate and the right UV lamp arranged on the right side of the spray head fixing plate can be used for curing the printing ink on the printing medium in real time during printing, so that the printing and curing are integrated. At the same time, by obtaining the left UV lamp offset value OLAnd right UV lamp offset value ORAnd high-precision control of the turning on/off of the UV lamp is realized. Specifically, the left UV lamp offset value OLAnd right UV lamp offset value ORMainly depends on the relative position relationship between the raster decoder and the left UV lamp and the right UV lamp, and has no necessary connection with the position relationship between the nozzles. Therefore, the left UV lamp offset value O will not be affected by whether the nozzles are out of ink or not during different print jobsLAnd right UV lamp offset value ORAnd the adaptation degree between the UV lamp and the printed image, thereby avoiding the UV lamp from being turned on/off in advance or in a lagging way, realizing the high-precision control on the turning on/off of the UV lamp in different printing tasks, and further improving the product quality. At the same time, since the left UV lamp offset value O is determinedLAnd right UV lamp offset value ORThe relative position relation between the grating decoder and the grating decoder is only needed to be determined, namely, only one-time alignment is needed, multiple times of alignment is not needed, the problem that errors are too large due to multiple times of alignment is avoided, and meanwhile, the process is simplified, so that the efficiency is improved.
The embodiment of the invention provides at least 2 technical schemes for acquiring the offset value O of the left UV lampLAnd right UV lamp offset value OR。
In one embodiment of the present invention, the distance between the raster decoder 50 and the left UV lamp 31 in the horizontal direction is measured as the left UV lamp offset value OL(ii) a By measuring the distance in the horizontal direction between the grating decoder 50 and the right UV lamp 32 as the right UV lamp offset value OR. The embodiment does not need to carry out additional processing, is easy to realize, and has low precision.
Therefore, another method for obtaining the offset value O of the left UV lamp is provided in the embodiments of the present inventionLAnd right UV lamp offset value ORPlease refer to fig. 5, which includes the following steps.
S11: printing a test image, wherein the test image comprises a vertical line segment which is orthogonal to the printing direction; wherein, the grating value corresponding to the position of the vertical line segment is recorded as a second grating value X2；
S12: controlling the printing trolley to move to enable the left UV lamp to be located at the position of the vertical line segment, controlling the raster decoder to read the current raster value, and recording the current raster value as a third raster value XL；
S13: according to the third grating value XLAnd a second grating value X2The difference between them determines the left UV lamp offset value OL；
S14: controlling the printing trolley to move to enable the right UV lamp to be located at the position of the vertical line segment, controlling a grating decoder to read the current grating value, and recording the current grating value as a fourth grating value XR；
S15: according to the fourth grating value XRAnd a second grating value X2The difference between them determines the right UV lamp offset value OR。
The shape of the test image is not limited, and may be a color patch, a vertical line graph, or an image to be printed.
For ease of understanding, referring to fig. 6A, the test image is a color patch 60 that includes a first boundary 61 that is a vertical line segment.
Controlling the printing trolley 40 to move so that the left UV lamp is located at the position of the first boundary 61, and the raster value corresponding to the position of the first boundary 61 is the second raster value X2When the raster decoder reads the third raster value as XLAnd the left UV lamp offset value OLEqual to the second grating value X2And a third grating value XLThe difference between them.
Similarly, as shown in fig. 6B, the print carriage 40 is controlled to move so that the right UV lamp is located at the position of the first boundary 61, and the raster value corresponding to the position of the first boundary 61 is the second raster value X2When the raster decoder reads the fourth raster value as XRAnd then the right UV lamp offset value OREqual to the second lightGrid value X2And a fourth grating value XRThe difference between them.
Referring to fig. 6C, in one embodiment of the present invention, the test image may be a vertical bar graph including at least 1 vertical line segment 62. Specifically, the printing trolley 40 is controlled to move, so that the right UV lamp is located at the position of the vertical line segment 62, and the grating value corresponding to the position of the vertical line segment 62 is the second grating value X2When the raster decoder reads the fourth raster value as XRAnd then the right UV lamp offset value OREqual to the second grating value X2And a fourth grating value XRThe difference between them.
Based on similar principles, the left UV lamp offset value O may be obtained by the vertical line segment 62LIt is not to be unduly exhaustive herein.
Left UV lamp offset value OLAnd right UV lamp offset value ORIt is generally fixed and invariant, depending primarily on the relative positional relationship between the raster decoder and the left and right UV lamps. Therefore, in a preferred embodiment of the present invention, the left UV lamp offset value O is obtainedLAnd right UV lamp offset value ORAnd then storing the data so as to facilitate subsequent calling.
It should be noted that the UV lamp has a certain width, and therefore, it should be understood by those skilled in the art that the UV lamp can be located at any position within the width range of the UV lamp where the vertical line segment is located, that is, any position where the vertical line segment is located to the right of the left edge of the UV lamp and located to the left of the right edge of the UV lamp. For example, as shown in fig. 6A and 6B, the first border 61 is aligned with the left and right edges of the UV lamp, respectively. For another example, as shown in FIG. 6C, the vertical line segment 62 is located within the width of the UV lamp.
In one embodiment of the present invention, at S13: according to the third grating value XLAnd said second grating value X2The difference between them determines the left UV lamp offset value OLIn, comprising: determining the left UV lamp offset value O according to a first formulaLThe first formula is: o isL＝max{XL,X2}-min{XL,X2}。
At S15: according to the fourth grating value XRAnd said second grating value X2The difference between them determines the right UV lamp offset value ORIn, comprising: determining the right UV lamp offset value O according to a second formulaRThe second formula is: o isR＝max{XR,X2}-min{XR,X2}。
Wherein, max { XL,X2Means take XLAnd X2Greater between the two, min { X }L,X2Means take XLAnd X2The smaller between the two. max { X }R,X2Means take XRAnd X2Greater between the two, min { X }R,X2Means take XRAnd X2The smaller between the two.
In another embodiment of the present invention, at S13: according to the third grating value XLAnd said second grating value X2The difference between them determines the left UV lamp offset value OLIn, comprising: determining the left UV lamp offset value O according to a third formulaLThe third formula is: o isL＝min{XL,X2}-max{XL,X2}。
At S15: according to the fourth grating value XRAnd said second grating value X2The difference between them determines the right UV lamp offset value ORIn, comprising: determining the right UV lamp offset value O according to a fourth equationRThe fourth formula is: o isR＝min{XR,X2}-max{XR,X2}。
It is apparent that the left UV lamp offset value O obtained in the above 2 embodimentsLThe difference is only positive and negative, and similarly, the right UV lamp offset value O obtained in the above 2 embodimentsRAnd is only a difference in sign. Those skilled in the art can easily substitute or combine the 2 embodiments to achieve the similar technical effects as the embodiments of the present invention. For simplicity of description, the first formula and the second formula are used for calculationTo left UV lamp offset value OLAnd right UV lamp offset value ORI.e. both are positive numbers.
Referring to fig. 7A, when the printing direction is from right to left printing, and the printing direction is a direction in which the raster value increases; s30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, further comprising:
s31: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S32: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1-OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1+L-OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1+ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1+L+ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
Referring to fig. 7B, when the printing direction is from left to right printing and the printing direction is a direction in which the raster value decreases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, further comprising:
s33: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S34: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1-OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1-L-OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1+ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1-L+ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
Referring to fig. 7C, when the printing direction is from right to left printing and the printing direction is a direction in which the raster value decreases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, further comprising:
s35: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S36: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1+OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1-L+OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1-ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1-L-ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
Referring to fig. 7D, when the printing direction is from left to right, and the printing direction is the direction of increasing raster value; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, further comprising:
s37: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S38: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1+OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1+L+OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1-ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1+L-ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
Referring to fig. 8, an embodiment of the present invention further provides a device for controlling on and off of a UV lamp, where the UV lamp includes a left UV lamp installed on a left side of a nozzle fixing plate and a right UV lamp installed on a right side of the nozzle fixing plate, the nozzle fixing plate is disposed on a print carriage, the print carriage is further provided with a grating decoder, and the device includes:
an offset value acquisition module for acquiring an offset value O of the left UV lampLAnd right UV lamp offset value OR(ii) a Wherein the left UV lamp offset value OLWhen the left UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position; the right UV lamp offset value ORWhen the right UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position;
the printing parameter acquisition module is used for acquiring a first printing starting position and the image length L of an image to be printed in the printing direction; wherein, the raster value corresponding to the first printing initial position is recorded as a first raster value X1；
The control module is used for controlling the printing trolley to start from the first printing starting position to perform ink jet printing along the printing direction, and is also used for controlling the left UV lamp and the right UV lamp to be turned on/off; wherein the control module is used for controlling the first raster value X according to the printing direction1The image length L and the left UV lamp offset value OLOne or more of the controls control the left UV lamp on/off; the control module is used for controlling the first raster value X according to the printing direction1The image length L and the right UV lamp offset value ORControls the right UV lamp to turn on/off.
In addition, the method for controlling the turning on and off of the UV lamp according to the embodiment of the present invention may be implemented by a printing apparatus. Fig. 9 is a schematic diagram illustrating a hardware configuration of a printing apparatus according to an embodiment of the present invention.
The printing device may include a processor and a memory storing computer program instructions.
In particular, the processor may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits that may be configured to implement embodiments of the present invention.
The memory may include mass storage for data or instructions. By way of example, and not limitation, memory may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or Universal Serial Bus (USB) Drive or a combination of two or more of these. The memory may include removable or non-removable (or fixed) media, where appropriate. The memory may be internal or external to the data processing apparatus, where appropriate. In a particular embodiment, the memory is non-volatile solid-state memory. In a particular embodiment, the memory includes Read Only Memory (ROM). Where appropriate, the ROM may be mask-programmed ROM, Programmable ROM (PROM), Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory or a combination of two or more of these.
The processor implements any of the above-described methods of controlling the turning on and off of the UV lamp by reading and executing computer program instructions stored in the memory.
In one example, the printing device may also include a communication interface and a bus. As shown in fig. 9, the processor, the memory, and the communication interface are connected by a bus to complete communication therebetween.
The communication interface is mainly used for realizing communication among modules, devices, units and/or equipment in the embodiment of the invention.
The bus includes hardware, software, or both that couple the components of the printing device to one another. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. A bus may include one or more buses, where appropriate. Although specific buses have been described and shown in the embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
In addition, in combination with the method for controlling the turning on and off of the UV lamp in the above embodiments, embodiments of the present invention may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by the processor, implement any of the above-described embodiments of a method of controlling turning on and off of a UV lamp.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A method for controlling the turning on and off of a UV lamp, wherein the UV lamp comprises a left UV lamp arranged on the left side of a nozzle fixing plate and a right UV lamp arranged on the right side of the nozzle fixing plate, the nozzle fixing plate is arranged on a printing trolley, the printing trolley is also provided with a grating decoder, and the method comprises the following steps:
s10: obtaining a left UV lamp offset value OLAnd right UV lamp offset value OR(ii) a Wherein the left UV lamp offset value OLWhen the left UV lamp is positioned at a first position, the grating decoder reads the obtained grating value and the first positionThe difference between the corresponding grating values; the right UV lamp offset value ORWhen the right UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position;
s20: acquiring a first printing starting position and an image length L of an image to be printed in a printing direction; wherein, the raster value corresponding to the first printing initial position is recorded as a first raster value X1；
S30: controlling the printing trolley to start ink jet printing from the first printing starting position along the printing direction, and controlling the left UV lamp and the right UV lamp to be turned on/off; wherein the first raster value X is based on the printing direction1The image length L and the left UV lamp offset value OLControl left UV lamp on/off; according to the printing direction, the first raster value X1The image length L and the right UV lamp offset value ORControls the right UV lamp to turn on/off.
2. The method of claim 1, wherein at S10: obtaining a left UV lamp offset value OLAnd right UV lamp offset value ORIn, comprising:
s11: printing a test image, the test image comprising a vertical line segment, the vertical line segment orthogonal to the printing direction; recording the grating value corresponding to the position of the vertical line segment as a second grating value X2；
S12: controlling the printing trolley to move to enable the left UV lamp to be located at the position of the vertical line segment, controlling the grating decoder to read the current grating value, and recording the current grating value as a third grating value XL；
S13: according to the third grating value XLAnd said second grating value X2The difference between them determines the left UV lamp offset value OL；
S14: controlling the printing trolley to move to enable the right UV lamp to be located at the position of the vertical line segment, controlling the grating decoder to read the current grating value, and recording the current grating value as fourth lightGrid value XR；
S15: according to the fourth grating value XRAnd said second grating value X2The difference between them determines the right UV lamp offset value OR。
3. The method of claim 2, wherein:
at S13: according to the third grating value XLAnd said second grating value X2The difference between them determines the left UV lamp offset value OLIn, comprising: determining the left UV lamp offset value O according to a first formulaLThe first formula is: o isL＝max{XL,X2}-min{XL,X2}；
At S15: according to the fourth grating value XRAnd said second grating value X2The difference between them determines the right UV lamp offset value ORIn, comprising: determining the right UV lamp offset value O according to a second formulaRThe second formula is: o isR＝max{XR,X2}-min{XR,X2}。
4. A method according to claim 3, wherein the printing direction is printing from right to left, and the printing direction is a direction in which raster values increase; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s31: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S32: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1-OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1+L-OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1+ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1+L+ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
5. The method of claim 3, wherein the printing direction is from left to right printing, and the printing direction is a direction in which the raster value decreases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s33: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S34: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1-OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1-L-OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1+ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1-L+ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
6. The method according to claim 3, wherein the printing direction is printing from right to left, and the printing direction is a direction in which the raster value decreases; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s35: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S36: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1+OLWhile controlling the left UThe V lamp is turned on;
when X is present5＝X1-L+OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1-ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1-L-ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
7. The method of claim 3, wherein the printing direction is from left to right printing and the printing direction is a direction in which raster values increase; at S30: controlling the printing carriage to perform inkjet printing in a printing direction from the first printing start position and controlling the left UV lamp and the right UV lamp to be turned on/off, including:
s37: controlling the raster decoder to read raster values recorded as a fifth raster value X in the moving process of the printing trolley5；
S38: according to the fifth grating value X5Controlling the left UV lamp and the right UV lamp to be turned on/off; wherein:
when X is present5＝X1+OLWhen the lamp is started, the left UV lamp is controlled to be started;
when X is present5＝X1+L+OLWhen the lamp is turned off, the left UV lamp is controlled to be turned off;
when X is present5＝X1-ORWhen the lamp is turned on, the right UV lamp is controlled to be turned on;
when X is present5＝X1+L-ORAnd when the lamp is turned off, the right UV lamp is controlled to be turned off.
8. The utility model provides a device that control UV lamp was opened and was closed, the UV lamp is including installing in the left UV lamp of shower nozzle fixed plate and installing in the right UV lamp on shower nozzle fixed plate right side, the shower nozzle fixed plate sets up on printing the dolly, it still is provided with the grating decoder to print the dolly, its characterized in that, the device includes:
an offset value acquisition module for acquiring an offset value O of the left UV lampLAnd right UV lamp offset value OR(ii) a Wherein the left UV lamp offset value OLWhen the left UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position; the right UV lamp offset value ORWhen the right UV lamp is located at a first position, the grating decoder reads a difference value between an obtained grating value and a grating value corresponding to the first position;
the printing parameter acquisition module is used for acquiring a first printing starting position and the image length L of an image to be printed in the printing direction; wherein, the raster value corresponding to the first printing initial position is recorded as a first raster value X1；
The control module is used for controlling the printing trolley to start from the first printing starting position to perform ink jet printing along the printing direction, and is also used for controlling the left UV lamp and the right UV lamp to be turned on/off; wherein the control module is used for controlling the first raster value X according to the printing direction1The image length L and the left UV lamp offset value OLOne or more of the controls control the left UV lamp on/off; the control module is used for controlling the first raster value X according to the printing direction1The image length L and the right UV lamp offset value ORControls the right UV lamp to turn on/off.
9. A printing apparatus, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-7.
10. A storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 1-7.
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