CN108928147B - Debugging method of ink-jet printing process - Google Patents
Debugging method of ink-jet printing process Download PDFInfo
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- CN108928147B CN108928147B CN201810659452.9A CN201810659452A CN108928147B CN 108928147 B CN108928147 B CN 108928147B CN 201810659452 A CN201810659452 A CN 201810659452A CN 108928147 B CN108928147 B CN 108928147B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/007—Digital printing on surfaces other than ordinary paper on glass, ceramic, tiles, concrete, stones, etc.
Abstract
The invention discloses a debugging method of an ink-jet printing process, which comprises the following steps: obtaining the size parameters of the grain green bricks which are dried on the production line; adjusting the size of the printing design drawing in the ink-jet printing process according to the size parameter; according to the adjusted printing design drawing, carrying out ink-jet printing process treatment on the texture green brick to obtain a printing texture green brick; detecting the deviation between the texture and the printing on the surface of the green brick with the printed texture; and adjusting the printing parameters of the ink-jet printer in the ink-jet printing process according to the detection result. The technical scheme of the invention can reduce the deviation between the texture and the printing on the surface of the printed texture green brick.
Description
Technical Field
The invention relates to the technical field of ceramic tiles, in particular to a debugging method of an ink-jet printing process.
Background
At present, ceramic tiles are widely used in modern home decoration and architectural decoration. The tile is also more and more in variety, wherein, for the printed texture green tile, the surface of the green tile not only has exquisite printing, but also the printing is matched with the texture on the surface of the green tile, thereby giving double aesthetic feeling of vision and touch. However, the existing printed texture green bricks on the market generally have the problem of deviation between textures and printing, namely the situation that the textures of the printed texture green bricks are not matched with the printing occurs sometimes, and the quality of the printed texture green bricks is reduced.
Disclosure of Invention
The invention mainly aims to provide a debugging method of an ink-jet printing process, aiming at reducing the deviation of the texture and the printing on the surface of a printed texture green brick.
In order to achieve the above object, the invention provides a method for debugging an inkjet printing process, comprising the following steps:
obtaining the size parameters of the grain green bricks which are dried on the production line;
adjusting the size of the printing design drawing in the ink-jet printing process according to the size parameter;
according to the adjusted printing design drawing, carrying out ink-jet printing process treatment on the texture green brick to obtain a printing texture green brick;
detecting the deviation between the texture and the printing on the surface of the green brick with the printed texture;
and adjusting the printing parameters of the ink-jet printer in the ink-jet printing process according to the detection result.
Optionally, the step of detecting the deviation between the texture and the print on the surface of the printed textured adobe includes:
and detecting the distance between the characteristic points of the texture on the surface of the printed texture green brick and the printed characteristic points.
Optionally, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result includes:
converting the distance into a first distance difference along the conveying direction of the conveying belt through a preset algorithm;
and adjusting the printing starting time of the ink-jet printer according to the first distance difference.
Optionally, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result includes:
the distance is converted into a second distance difference vertical to the conveying direction of the conveying belt through a preset algorithm;
and adjusting the printing position of the ink-jet printer vertical to the conveying direction of the conveying belt according to the second distance difference.
Optionally, the step of detecting the deviation between the texture and the print on the surface of the printed textured adobe includes:
detecting a first distance between a characteristic point of a texture and a first side edge of the green brick with the printed texture on the surface of the green brick with the printed texture and a second distance between the characteristic point of the printing and the first side edge of the green brick with the printed texture;
detecting the third distance between the characteristic points of the texture and the second side of the printed texture green brick and the fourth distance between the characteristic points of the printing and the second side of the printed texture green brick on the surface of the printed texture green brick.
Optionally, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result includes:
performing difference operation on the first distance and the second distance to obtain a first distance difference of the two characteristic points along the conveying direction of the conveyor belt;
and adjusting the printing starting time of the ink-jet printer according to the first distance difference.
Optionally, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result includes:
performing difference operation on the third distance and the fourth distance to obtain a second distance difference of the two characteristic points perpendicular to the conveying direction of the conveyor belt;
and adjusting the printing position of the ink-jet printer vertical to the conveying direction of the conveying belt according to the second distance difference.
Optionally, the step of detecting the deviation between the texture and the print on the surface of the printed textured adobe includes:
and detecting a first distance difference between a first edge of the printing and a first side edge of the printing texture green brick on the surface of the printing texture green brick, and a second distance difference between a second edge of the printing and a second side edge of the printing texture green brick.
Optionally, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result includes:
and adjusting the printing starting time of the ink-jet printer according to the first distance difference.
Optionally, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result includes:
and adjusting the printing position of the ink-jet printer vertical to the conveying direction of the conveying belt according to the second distance difference.
According to the technical scheme, the dimension parameters of the texture green bricks which are dried on a production line are obtained, the dimensions of the printing design drawings in the subsequent ink-jet printing process are adjusted according to the dimension parameters, and the ink-jet printing process treatment is carried out on the texture green bricks according to the adjusted printing design drawings, so that the printing texture green bricks can be obtained. Therefore, the influence of the size change of the texture green brick caused by the green brick pressing and forming process on the subsequent ink-jet printing process is effectively eliminated, the problem that the design size of a printing design drawing in the ink-jet printing process has an error with the actual size of the texture green brick is avoided, and the condition that the size of the texture on the surface of the printing texture green brick is not matched with the size of the printing is avoided, so that the size of the texture green brick is matched with that of the printing design drawing, and the deviation of the texture on the surface of the printing texture green brick from the printing is reduced. In addition, according to the technical scheme, the deviation between the texture on the surface of the green brick with the printed texture and the printing is detected, and the printing parameters of the ink-jet printer in the ink-jet printing process are adjusted according to the detection result. Therefore, the deviation between the texture and the printing caused by the deviation of the printing parameters of the ink-jet printer can be reduced, namely, the deviation between the texture and the printing on the surface of the printing texture green brick is reduced, and the quality of texture printing transfer is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a first embodiment of a debugging method of the ink-jet printing process of the present invention;
FIG. 2 is a schematic flow chart illustrating a second embodiment of a debugging method of the ink-jet printing process according to the invention;
FIG. 3 is a schematic flow chart of a third embodiment of a debugging method of the ink-jet printing process according to the invention;
fig. 4 is a schematic flow chart of a debugging method of the inkjet printing process according to a fourth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
The invention provides a debugging method of an ink-jet printing process.
Referring to fig. 1, in a first embodiment of the debugging method of the inkjet printing process of the present invention, the debugging method of the inkjet printing process includes the following steps:
step S10, obtaining the size parameter of the grain green brick which is dried on the production line;
step S20, adjusting the size of the printing design drawing in the ink-jet printing process according to the size parameter;
step S30, according to the adjusted printing design drawing, carrying out inkjet printing process treatment on the texture green brick to obtain a printing texture green brick;
step S40, detecting the deviation between the texture and the printing on the surface of the printing texture green brick;
and step S50, adjusting the printing parameters of the ink-jet printer in the ink-jet printing process according to the detection result.
The following description will be made with a square stamp design having a length x width of 400mm x 400mm as a starting point. After the printed design drawing is determined, that is, after the dimensions (length × width 400mm × 400mm) and the patterns (such as graphic design, concave-convex design, etc.) of the printed design drawing are determined, the design and manufacture of the mold are performed according to the dimensions (length × width 400mm × 400mm) and the patterns (such as graphic design, concave-convex design, etc.) of the printed design drawing. And then, performing compression molding (namely a green brick compression molding process) on the green brick by using the manufactured mold. Because the size of the texture green brick obtained by the green brick pressing and forming process is often accompanied with the expansion and enlargement condition, the size of the texture green brick obtained actually is no longer matched with the size of the original printed design drawing. At this time, by obtaining the dimensional parameters of the texture green bricks which have been dried on the production line, for example, the actual dimensional parameters of the obtained texture green bricks are 410mm × 410mm (length × width), the dimensions of the original design drawings can be adjusted to 410mm × 410mm (length × width) based on the actual dimensional parameters of the texture green bricks (length × width is 410mm × 410 mm). Therefore, the influence of the size change of the texture green brick caused by the green brick pressing and forming process on the subsequent ink-jet printing process is effectively eliminated, the condition that the size of the texture on the surface of the printed texture green brick is not matched with that of the printing is avoided, and the deviation of the texture on the surface of the printed texture green brick and the printing is reduced.
It should be noted that the inkjet printing process is performed by an inkjet printer, and the process is as follows: the texture green bricks which are dried on the production line are driven by the conveyor belt to enter a printing area of the ink-jet printer, and at the moment, the ink-jet printer prints the printing design drawing on the surface of the texture green bricks line by line, so that the texture on the surface of the texture green bricks is matched with the printing position printed on the texture green bricks. When the texture green bricks are taken out of the printing area of the ink-jet printer along with the conveyor belt, the printing of the whole printing design drawing is finished, and the ink-jet printing process is finished, so that the printing texture green bricks can be obtained. Therefore, it can be understood that the printing parameters (such as printing start time, printing position, etc.) of the ink-jet printer directly affect the matching degree of the texture and the printing on the surface of the finally obtained printed texture green brick, the accuracy of the ink-jet printing process, and the quality of the printed texture green brick. Specifically, the printing start time of the ink-jet printer can determine whether the first line of patterns in the printed design drawing is matched with the first line of textures on the surface of the textured green brick in the conveying direction of the conveying belt (the front and back directions of the conveying belt can be understood), so that whether the position of the whole printed design drawing in the conveying direction of the conveying belt is correct and whether the position of the whole printed design drawing is matched with the textures on the surface of the textured green brick can be determined; the printing position of the ink jet printer determines whether the position of the whole printed design in the direction perpendicular to the conveying direction of the conveyor belt (the directions of the two sides of the conveyor belt can be understood) is correct or not and is matched with the texture on the surface of the textured green brick.
At this time, according to the printing design drawing with the adjusted size, the texture green brick is subjected to ink-jet printing process treatment, and a printing texture green brick for testing can be obtained. Afterwards, through detecting the deviation between the texture and the printing on the surface of the 'test-use' printing texture green brick, and according to the detection result, adjusting the printing parameters of the ink-jet printer in the ink-jet printing process, the deviation between the texture and the printing on the surface of the printing texture green brick brought by the printing parameters (such as printing starting time, printing position and the like) of the ink-jet printer can be effectively eliminated, so that the deviation between the texture and the printing on the surface of the printing texture green brick can be reduced, and the quality of the printing texture green brick is improved.
Therefore, it can be understood that, according to the technical scheme of the invention, the printed texture green brick can be obtained by obtaining the size parameter of the texture green brick which is dried on the production line, adjusting the size of the printed design drawing in the subsequent ink-jet printing process according to the size parameter, and performing the ink-jet printing process treatment on the texture green brick according to the adjusted printed design drawing. Therefore, the influence of the size change of the texture green brick caused by the green brick pressing and forming process on the subsequent ink-jet printing process is effectively eliminated, the problem that the design size of a printing design drawing in the ink-jet printing process has an error with the actual size of the texture green brick is avoided, and the condition that the size of the texture on the surface of the printing texture green brick is not matched with the size of the printing is avoided, so that the size of the texture green brick is matched with that of the printing design drawing, and the deviation of the texture on the surface of the printing texture green brick from the printing is reduced. In addition, according to the technical scheme, the deviation between the texture on the surface of the green brick with the printed texture and the printing is detected, and the printing parameters of the ink-jet printer in the ink-jet printing process are adjusted according to the detection result. Therefore, the deviation between the texture and the printing caused by the deviation of the printing parameters of the ink-jet printer can be reduced, namely, the deviation between the texture and the printing on the surface of the printing texture green brick is reduced, and the quality of texture printing transfer is improved.
Referring to fig. 2, in a second embodiment of the tuning method of the inkjet printing process according to the present invention, the step of detecting the deviation between the texture and the print on the surface of the printed textured green brick, i.e. step S40, includes:
and S41a, detecting the distance between the characteristic points of the texture on the surface of the printed texture green brick and the printed characteristic points.
Specifically, when designing the printed design drawing, one or more feature points for identifying a machine, a device, or an instrument, for example, a specific point (e.g., a geometric center, a circle center, a gravity center, a vertex of a located area, etc.) on a specific figure (e.g., a cross, a circle, a triangle, a two-dimensional code, a bar code, etc.) are designed on the printed design drawing, and of course, the size of the feature points is very small and negligible relative to the size of the main pattern of the printed design drawing, so that the main pattern of the printed design drawing is not influenced by the user. Therefore, it can be understood that when the design and manufacture of the mold are performed according to the printed design drawing designed with the characteristic points, the corresponding characteristic points will exist on the pressing surface of the grinding tool.
Further, the characteristic points on the printing design drawing are subjected to an ink-jet printing process, so that the printing on the surface of the printing texture transfer printing also has the characteristic points, namely the characteristic points of the printing; the characteristic points on the mould are pressed and formed by a blank body, so that the texture on the surface of the printing texture transfer mould also has the characteristic points, namely the characteristic points of the texture. At the moment, the deviation between the texture and the printing on the surface of the 'test' printed texture green brick can be obtained by detecting the distance between the characteristic point of the texture and the characteristic point of the printing on the surface of the 'test' printed texture green brick, and the deviation can be used for adjusting the printing parameters of an ink-jet printer, so that the deviation between the texture and the printing on the surface of the subsequently obtained printed texture green brick is eliminated, the deviation between the texture and the printing on the surface of the printed texture green brick is reduced, and the quality of the printed texture green brick is improved.
It should be noted that, the capturing of the texture feature points and the print feature points, and the detection of the distance between the two feature points can be realized by a scanner in combination with a computer. Specifically, after the scanner scans the surface of the green brick with the printed texture, a 2D and/or 3D image of the surface of the green brick with the printed texture can be established in a computer, and meanwhile, a scale between the computer size of the image and the actual size of the green brick with the printed texture can be established. And then, the computer can obtain the distance between the characteristic points of the texture on the surface of the printed texture green brick and the printed characteristic points by processing and calculating the coordinate information of the position of each characteristic point in the 2D and/or 3D images so as to be used for the subsequent processing and control process.
Referring to fig. 2, in a second embodiment of the debugging method of the inkjet printing process according to the present invention, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result, i.e. step S50, includes:
step S51a, converting the distance into a first distance difference along the conveying direction of the conveyor belt through a preset algorithm;
step S52a, adjusting a printing start time of the inkjet printer according to the first distance difference.
Specifically, a rectangular coordinate system is established by taking the vertex of the lower left side of the printed texture adobe in an overlooking state as the origin, the included angle between the straight line where the distance is located and the abscissa axis is obtained, and the first distance difference along the conveying direction of the conveying belt corresponding to the distance, namely the distance difference between the whole piece of printing and the texture along the conveying direction of the conveying belt, can be calculated through the distance and the sine value of the included angle. Further, the time difference corresponding to the first distance difference can be calculated by combining the speed of the conveyor belt.
At this time, the ordinate of the printed feature point and the ordinate of the texture feature point need to be compared: if the ordinate of the characteristic point of the printing is greater than the ordinate of the characteristic point of the texture, advancing the printing start time of the ink-jet printer by the time difference; if the ordinate of the printed feature point is smaller than the ordinate of the texture feature point, the printing start time of the inkjet printer is delayed by the time difference.
Therefore, the deviation of the position of the whole printed design drawing in the conveying direction of the conveying belt, which is caused by too early or too late printing starting time, can be avoided, and the position of the whole printed design drawing in the conveying direction of the conveying belt can be enabled to be correct and matched with the texture on the surface of the texture green brick.
Referring to fig. 2, in a second embodiment of the debugging method of the inkjet printing process according to the present invention, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result, i.e. step S50, further includes:
step S53a, the distance is converted into a second distance difference perpendicular to the conveying direction of the conveyor belt through a preset algorithm;
and step S54a, adjusting the printing position of the ink-jet printer in the vertical conveying direction of the conveying belt according to the second distance difference.
Specifically, a rectangular coordinate system is established by taking the vertex of the lower left side of the printed texture green brick in an overlooking state as the origin, the included angle between the straight line where the distance is located and the abscissa axis is obtained, and the second distance difference, corresponding to the distance, in the vertical conveying belt conveying direction can be calculated through the distance and the residual value of the included angle, namely the distance difference between the whole piece of printing and the texture in the vertical conveying belt conveying direction.
Further, the abscissa of the printed feature point needs to be compared with the abscissa of the textured feature point: if the abscissa of the printed feature point is larger than the abscissa of the texture feature point, moving the printing position of the ink-jet printer to the negative direction of the abscissa axis by the second distance difference; and if the abscissa of the feature point of the printing is smaller than the abscissa of the feature point of the texture, moving the printing position of the ink-jet printer by the second distance difference in the positive direction of the abscissa axis.
Therefore, the deviation of the position of the whole printed design drawing in the conveying direction of the vertical conveying belt, which is caused by the deviation of the printing position to the left side or the right side of the conveying belt, can be avoided, and the position of the whole printed design drawing in the conveying direction of the vertical conveying belt can be enabled to be correct and matched with the texture on the surface of the texture green brick.
Referring to fig. 3, in a third embodiment of the debugging method of the inkjet printing process of the present invention, the step of detecting the deviation between the texture and the print on the surface of the printed textured green brick, i.e. step S40, includes:
step S41b, detecting a first distance between a characteristic point of a texture and a first side edge of the green brick with the printed texture on the surface of the green brick with the printed texture and a second distance between the characteristic point of the printing and the first side edge of the green brick with the printed texture;
and S42b, detecting a third distance between the characteristic point of the texture and the second side edge of the printed texture green brick on the surface of the printed texture green brick and a fourth distance between the characteristic point of the printing and the second side edge of the printed texture green brick.
Specifically, a rectangular coordinate system is established by taking the top point of the left lower part of the printed texture green brick in the overlooking state as the original point, the lower side of the printed texture green brick in the overlooking state is taken as the first side, at the moment, the longitudinal coordinate of the characteristic point of the texture is obtained, and the first distance between the characteristic point of the texture and the first side of the printed texture green brick is obtained; and acquiring the vertical coordinate of the printed characteristic point to obtain the second distance between the printed characteristic point and the first side edge of the printed texture green brick.
Further, taking the left side of the printed texture green brick in a overlooking state as a second side, at the moment, acquiring the horizontal coordinate of the characteristic point of the texture, and thus obtaining a third distance between the characteristic point of the texture and the second side of the printed texture green brick; and acquiring the abscissa of the printed characteristic point, and thus obtaining the fourth distance between the printed characteristic point and the second side edge of the printed texture green brick.
So, alright through the difference of first distance and second distance, and the difference of third distance and fourth distance, learn "experimental with" the printing texture adobe on the surface deviation between texture and the stamp, this deviation alright be used for inkjet printer printing parameter's adjustment to eliminate the follow-up deviation between texture and the stamp on obtaining the printing texture adobe surface, and then make the printing texture adobe on the surface deviation of texture and stamp reduce, promote the quality of printing texture adobe.
It should be noted that the above process can be implemented by a scanner in combination with a computer. Specifically, after the scanner scans the surface of the green brick with the printed texture, a 2D and/or 3D image of the surface of the green brick with the printed texture can be established in a computer, and meanwhile, a scale between the computer size of the image and the actual size of the green brick with the printed texture can be established. And then, the computer can obtain the first distance, the second distance, the third distance and the fourth distance of the texture feature points and the printing feature points on the surface of the printed texture green brick through processing and calculating the coordinate information of the feature points in the 2D and/or 3D images for subsequent processing and control processes.
Referring to fig. 3, in a third embodiment of the debugging method of the inkjet printing process according to the present invention, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result, i.e. step S50, includes:
step S51b, calculating the difference between the first distance and the second distance to obtain a first distance difference between the two characteristic points along the conveying direction of the conveyor belt;
step S52b, adjusting a printing start time of the inkjet printer according to the first distance difference.
Specifically, the time difference corresponding to the first distance difference can be calculated by relating the first distance difference to the speed of the conveyor belt. At this time, the ordinate of the printed feature point and the ordinate of the texture feature point need to be compared: if the ordinate of the characteristic point of the printing is greater than the ordinate of the characteristic point of the texture, advancing the printing start time of the ink-jet printer by the time difference; if the ordinate of the printed feature point is smaller than the ordinate of the texture feature point, the printing start time of the inkjet printer is delayed by the time difference.
Therefore, the deviation of the position of the whole printed design drawing in the conveying direction of the conveying belt, which is caused by too early or too late printing starting time, can be avoided, and the position of the whole printed design drawing in the conveying direction of the conveying belt can be enabled to be correct and matched with the texture on the surface of the texture green brick.
Referring to fig. 3, in a third embodiment of the debugging method of the inkjet printing process according to the present invention, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result, i.e. step S50, further includes:
step S53b, performing a difference operation on the third distance and the fourth distance to obtain a second distance difference between the two feature points perpendicular to the conveying direction of the conveyor belt;
and step S54b, adjusting the printing position of the ink-jet printer in the vertical conveying direction of the conveying belt according to the second distance difference.
Specifically, the abscissa of the printed feature points and the abscissa of the textured feature points are compared: if the abscissa of the printed feature point is larger than the abscissa of the texture feature point, moving the printing position of the ink-jet printer to the negative direction of the abscissa axis by the second distance difference; and if the abscissa of the feature point of the printing is smaller than the abscissa of the feature point of the texture, moving the printing position of the ink-jet printer by the second distance difference in the positive direction of the abscissa axis.
Therefore, the deviation of the position of the whole printed design drawing in the conveying direction of the vertical conveying belt, which is caused by the deviation of the printing position to the left side or the right side of the conveying belt, can be avoided, and the position of the whole printed design drawing in the conveying direction of the vertical conveying belt can be enabled to be correct and matched with the texture on the surface of the texture green brick.
Referring to fig. 4, in a fourth embodiment of the debugging method of the inkjet printing process of the present invention, the step of detecting the deviation between the texture and the print on the surface of the printed textured green brick, i.e. step S40, includes:
step S41c, detecting a first distance difference between a first edge of the printing and a first side edge of the printing texture green brick and a second distance difference between a second edge of the printing and a second side edge of the printing texture green brick on the surface of the printing texture green brick.
Specifically, a rectangular coordinate system is established with the top point of the left lower side of the printed texture green brick in a top view state as the origin, and the following description takes the case that the whole printed texture green brick moves upwards and rightwards relative to the texture green brick as an example:
the lower side of the printed texture green brick in an overlooking state is taken as a first side, the lower side of the printing is taken as a first edge, at the moment, the vertical coordinate of any point on the lower side of the printing is obtained, and the first distance difference between the first edge of the printing and the first side of the printed texture green brick can be obtained.
The left side of the printed texture adobe in an overlooking state is used as a second side edge, the left side of the printing is used as a second edge, at the moment, the abscissa of any point on the left side of the printing is obtained, and the second distance difference between the printed second edge and the second side edge of the printed texture adobe can be obtained.
Therefore, the deviation between the texture and the printing on the surface of the printing texture green brick for the test can be obtained through the first distance difference and the second distance difference, the deviation can be used for adjusting the printing parameters of the ink-jet printer, so that the deviation between the texture and the printing on the surface of the subsequently obtained printing texture green brick is eliminated, the deviation between the texture and the printing on the surface of the printing texture green brick is reduced, and the quality of the printing texture green brick is improved.
It should be noted that the above process can be implemented by a scanner in combination with a computer. Specifically, after the scanner scans the surface of the green brick with the printed texture, a 2D and/or 3D image of the surface of the green brick with the printed texture can be established in a computer, and meanwhile, a scale between the computer size of the image and the actual size of the green brick with the printed texture can be established. And then, the computer can obtain the first distance, the second distance, the third distance and the fourth distance of the texture feature points and the printing feature points on the surface of the printed texture green brick through processing and calculating the coordinate information of the feature points in the 2D and/or 3D images for subsequent processing and control processes.
Referring to fig. 4, in a fourth embodiment of the debugging method of the inkjet printing process according to the present invention, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result, i.e., step S50, includes:
in step S51c, the printing start time of the inkjet printer is adjusted according to the first distance difference.
Specifically, the time difference corresponding to the first distance difference can be calculated by relating the first distance difference to the speed of the conveyor belt. In this case, the printing start time of the ink jet printer may be advanced by the time difference.
Therefore, the deviation of the position of the whole printed design drawing in the conveying direction of the conveying belt, which is caused by too early or too late printing starting time, can be avoided, and the position of the whole printed design drawing in the conveying direction of the conveying belt can be enabled to be correct and matched with the texture on the surface of the texture green brick.
Referring to fig. 4, in a fourth embodiment of the debugging method of the inkjet printing process according to the present invention, the step of adjusting the position of the inkjet printer in the inkjet printing process according to the detection result, i.e. step S50, further includes:
and step S52c, adjusting the printing position of the ink-jet printer in the vertical conveying direction of the conveying belt according to the second distance difference.
Specifically, the printing position of the inkjet printer may be moved in a negative direction of the abscissa axis by the second distance difference.
Therefore, the deviation of the position of the whole printed design drawing in the conveying direction of the vertical conveying belt, which is caused by the deviation of the printing position to the left side or the right side of the conveying belt, can be avoided, and the position of the whole printed design drawing in the conveying direction of the vertical conveying belt can be enabled to be correct and matched with the texture on the surface of the texture green brick.
It should be noted that, in the fourth embodiment of the commissioning method of the inkjet printing process of the present invention, when there is displacement of the whole print relative to the grain green brick in other directions different from the above case, that is:
when there is an upward and leftward shift of the whole print with respect to the textured green tile, the coordinate system is established the same as above, except that: and taking the right side of the printed texture green brick in an overlooking state as a second side, taking the printed right side as a second edge, and taking the difference value between the abscissa of any point on the second side and the abscissa of any point on the second edge as a second distance difference. At this time, the printing position may be moved by the second distance difference in the positive direction of the abscissa axis.
When there is a downward and right shift of the whole print relative to the textured green brick, the coordinate system is established the same as above, except that: and taking the upper side of the printed texture green brick in an overlooking state as a first side, taking the printed upper side as a first edge, and taking the difference value between the ordinate of any point on the first side and the ordinate of any point on the first edge as a first distance difference. In this case, the printing start time of the inkjet printer may be delayed by a time difference corresponding to the first distance difference.
When there is a shift of the whole print down and left with respect to the textured green tile, the coordinate system is established the same as above, except that:
and taking the upper side of the printed texture green brick in an overlooking state as a first side, taking the printed upper side as a first edge, and taking the difference value between the ordinate of any point on the first side and the ordinate of any point on the first edge as a first distance difference. In this case, the printing start time of the inkjet printer may be delayed by a time difference corresponding to the first distance difference.
And taking the right side of the printed texture green brick in an overlooking state as a second side, taking the printed right side as a second edge, and taking the difference value between the abscissa of any point on the second side and the abscissa of any point on the second edge as a second distance difference. At this time, the printing position may be moved by the second distance difference in the positive direction of the abscissa axis.
During actual detection, the computer only needs to judge in advance which of the four displacement conditions the actual condition belongs to, and then can enter a corresponding calculation mode for calculation and control. Specifically, the judgment of the four displacement conditions can be obtained according to the overlapping mode of the printing and the area where the texture is located. That is, the four overlapping modes correspond to four displacement situations, and the four displacement situations correspond to four calculation modes.
In addition, the first distance difference and the second distance difference are both positive values after taking absolute values.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A debugging method of an ink-jet printing process is characterized by comprising the following steps:
obtaining the size parameters of the grain green bricks which are dried on the production line;
adjusting the size of the printing design drawing in the ink-jet printing process according to the size parameter;
according to the adjusted printing design drawing, carrying out ink-jet printing process treatment on the texture green brick to obtain a printing texture green brick;
detecting the deviation between the texture and the printing on the surface of the green brick with the printed texture;
adjusting the printing parameters of the ink-jet printer in the ink-jet printing process according to the detection result;
the printing parameters include a printing start time and a printing position.
2. The commissioning method of claim 1, wherein said step of detecting deviations between texture and print on the surface of said printed textured green brick comprises:
and detecting the distance between the characteristic points of the texture on the surface of the printed texture green brick and the printed characteristic points.
3. The debugging method of claim 2, wherein the step of adjusting the position of the inkjet printer in the inkjet printing process according to the result of the detection comprises:
converting the distance into a first distance difference along the conveying direction of the conveying belt through a preset algorithm;
and adjusting the printing starting time of the ink-jet printer according to the first distance difference.
4. The debugging method of claim 2, wherein the step of adjusting the position of the inkjet printer in the inkjet printing process according to the result of the detection comprises:
the distance is converted into a second distance difference vertical to the conveying direction of the conveying belt through a preset algorithm;
and adjusting the printing position of the ink-jet printer vertical to the conveying direction of the conveying belt according to the second distance difference.
5. The commissioning method of claim 1, wherein said step of detecting deviations between texture and print on the surface of said printed textured green brick comprises:
detecting a first distance between a characteristic point of a texture and a first side edge of the green brick with the printed texture on the surface of the green brick with the printed texture and a second distance between the characteristic point of the printing and the first side edge of the green brick with the printed texture;
detecting the third distance between the characteristic points of the texture and the second side of the printed texture green brick and the fourth distance between the characteristic points of the printing and the second side of the printed texture green brick on the surface of the printed texture green brick.
6. The debugging method of claim 5, wherein the step of adjusting the position of the inkjet printer in the inkjet printing process according to the result of the detection comprises:
performing difference operation on the first distance and the second distance to obtain a first distance difference of the two characteristic points along the conveying direction of the conveyor belt;
and adjusting the printing starting time of the ink-jet printer according to the first distance difference.
7. The debugging method of claim 5, wherein the step of adjusting the position of the inkjet printer in the inkjet printing process according to the result of the detection comprises:
performing difference operation on the third distance and the fourth distance to obtain a second distance difference of the two characteristic points perpendicular to the conveying direction of the conveyor belt;
and adjusting the printing position of the ink-jet printer vertical to the conveying direction of the conveying belt according to the second distance difference.
8. The commissioning method of claim 1, wherein said step of detecting deviations between texture and print on the surface of said printed textured green brick comprises:
and detecting a first distance difference between a first edge of the printing and a first side edge of the printing texture green brick on the surface of the printing texture green brick, and a second distance difference between a second edge of the printing and a second side edge of the printing texture green brick.
9. The commissioning method of claim 8, wherein said step of adjusting the position of the inkjet printer in the inkjet printing process based on the result of said detecting comprises:
and adjusting the printing starting time of the ink-jet printer according to the first distance difference.
10. The commissioning method of claim 8, wherein said step of adjusting the position of the inkjet printer in the inkjet printing process based on the result of said detecting comprises:
and adjusting the printing position of the ink-jet printer vertical to the conveying direction of the conveying belt according to the second distance difference.
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