CN113968079A

CN113968079A - Printing method

Info

Publication number: CN113968079A
Application number: CN202111225961.9A
Authority: CN
Inventors: 周丹; 李洋; 黄增祥
Original assignee: Zhuhai Bentsai Printing Technology Co ltd
Current assignee: Zhuhai Bentsai Printing Technology Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-25
Anticipated expiration: 2041-10-21
Also published as: CN113968079B

Abstract

The application provides a printing method, which is suitable for a printing system comprising a plurality of printing mechanisms, wherein each printing mechanism comprises at least one printing assembly, each printing assembly comprises an integrated nozzle module and a sensor, and the sensor is used for detecting the position of an ink outlet of the nozzle module relative to a piece to be printed. In the process that the piece to be printed moves along the first direction relative to the plurality of printing mechanisms, the plurality of printing mechanisms are utilized to print different positions or different faces to be printed of the same face to be printed of the piece to be printed. The printing of a plurality of printing surfaces or different positions of the same printing surface can be realized on the premise of one-time positioning, the printing efficiency is high, the error of the printing content is small, and the printing quality is high.

Description

Printing method

Technical Field

The invention relates to the technical field of printing, in particular to a printing method.

Background

In the prior art, single-side printing is usually realized by using a single-nozzle module assembly, combining two nozzle modules, combining four nozzle modules or combining the rest of multiple nozzle modules, so that the height or the width of a printed portrait is increased. When different sides or different positions of a piece to be printed need to be printed, single-side printing action needs to be repeated, and the piece needs to be repositioned every time of printing, so that the operation efficiency is reduced, the error of printing content is large, and the printing quality is poor.

Disclosure of Invention

The invention aims to provide a printing method which can realize printing at different positions of a plurality of surfaces or the same printing surface on the premise of one-time positioning, and has the advantages of high printing efficiency, small error of printing content and high printing quality.

The embodiment of the invention is realized by the following steps:

the invention provides a printing method, which is suitable for a printing system comprising a plurality of printing mechanisms, wherein each printing mechanism comprises at least one printing component, each printing component comprises an integrated nozzle module and a sensor, and the sensor is used for detecting the position of an ink outlet of the nozzle module relative to a piece to be printed, and the printing method comprises the following steps:

in the process that the piece to be printed moves along the first direction relative to the plurality of printing mechanisms, the plurality of printing mechanisms are utilized to print different positions or different faces to be printed of the same face to be printed of the piece to be printed.

In an alternative embodiment, when the sensor detects the piece to be printed, the head module of the printing assembly corresponding to the sensor is activated.

In an alternative embodiment, when the sensor detects the piece to be printed, the nozzle module of the printing component corresponding to the sensor is started in a delayed mode.

In an alternative embodiment, the step of starting the nozzle module of the printing assembly corresponding to the sensor in a delayed manner includes starting the corresponding nozzle module after the to-be-printed piece continues to move for a set distance in the first direction when the sensor detects the to-be-printed piece.

In an alternative embodiment, the member to be printed is driven by the conveyor belt to move in a first direction relative to the plurality of printing mechanisms.

In an alternative embodiment, an encoder synchronizing wheel is provided on the conveyor belt in communication with the control system to detect the conveyor belt's speed of travel; the control system controls the printing mechanism to print according to the transmission speed.

In an alternative embodiment, when the printing mechanism comprises a plurality of printing assemblies, the printing mechanism is activated to print when any one of the plurality of printing assemblies detects a to-be-printed item.

In an optional embodiment, before the step of activating the printing mechanism to print when any one of the plurality of printing assemblies detects the to-be-printed item, the method further includes adjusting the number of the plurality of printing assemblies or the arrangement of the plurality of printing assemblies.

In an alternative embodiment, the step of activating the printing mechanism to print when any one of the plurality of printing assemblies detects a to-be-printed item further includes inputting, in the control system, a distance parameter in the first direction between adjacent ones of the plurality of printing assemblies.

In an alternative embodiment, the step of moving the to-be-printed member in a first direction relative to the plurality of printing mechanisms further comprises adjusting the relative position of the to-be-printed member and the printing mechanisms in a second direction having an angle with the first direction to determine the width of the print content.

The embodiment of the invention has the beneficial effects that:

in summary, the printing method provided by this embodiment is suitable for a printing system including multiple printing mechanisms, and the multiple printing mechanisms are used in cooperation, so that different positions of the same printing surface of a to-be-printed piece can be printed, different printing surfaces of the to-be-printed piece can also be printed, repeated positioning is not needed, the operation efficiency is high, and the printing quality is high. Meanwhile, each printing mechanism comprises an integrated nozzle module and a sensor, the position of each printing mechanism relative to a piece to be printed can be detected and acquired through the respective sensor, and the plurality of printing mechanisms can operate independently and do not interfere with each other; when the position of the printing mechanism is adjusted, the relative positions of the nozzle module and the sensor do not need to be adjusted again, the position adjustment operation of the printing mechanism is flexible and convenient, and the matching of a plurality of printing mechanisms is more flexible and reliable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a printing system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a printing assembly according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an application of the printing method according to the embodiment of the present invention;

fig. 4 is a schematic diagram of another application of the printing method according to the embodiment of the present invention.

Icon:

001-first direction; 002-a second direction; 100-a printing system; 110 — a first printing mechanism; 120-a second printing mechanism; 130-a third printing mechanism; 140-a printing assembly; 141-a showerhead module; 142-a sensor; 150-a workbench; 160-a conveyor belt; 170-encoder synchronizing wheel; 180-a control system; 200-a to-be-printed piece; 210-a top surface; 220-left side; 230-right side.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, when different positions of the same printing surface of the to-be-printed piece 200 or different printing surfaces of the to-be-printed piece 200 are subjected to printing operation, the to-be-printed piece 200 needs to be repeatedly positioned for multiple times, so that the operation efficiency is reduced, the error is increased, and the printing quality is reduced.

In view of this, the designer designs a printing method suitable for the printing system 100 including multiple printing mechanisms, which can simultaneously perform printing operations on different positions or different printing surfaces of the same printing surface of the to-be-printed material 200, reduce the number of positioning times, improve the operation efficiency, and improve the printing quality.

Referring to fig. 1 and fig. 2, it should be noted that the printing method is applicable to a printing system 100 including a plurality of printing mechanisms, each of the printing mechanisms is independently disposed and is in communication connection with a control system 180, in this embodiment, the number of the printing mechanisms is three for example, and the three printing mechanisms can perform a printing operation on the same printing surface or different printing surfaces of a to-be-printed product 200. Specifically, each printing mechanism includes a panel and a plurality of printing assemblies 140 connected to the panel, and the plurality of printing assemblies 140 may be arranged as required, for example, the plurality of printing assemblies 140 are arranged in a line shape or in a step shape, in this embodiment, the number of printing assemblies 140 is four and the printing assemblies 140 are arranged in a step shape as an example. Each print module 140 includes an integral printhead module 141 and a sensor 142. it should be understood that the printhead module 141 includes a carrier and an ink cartridge connected thereto, and that the sensor 142 is designed as an integral structure with the carrier. The sprayer module 141 and the sensor 142 can be connected through data lines in a communication manner, and the sprayer module 141 and the control system 180 can be connected through data lines in a communication manner; the sensor 142 may be a photoelectric sensor 142, that is, an object of various media is detected by photoelectric reflection, and the sensor 142 is used to detect the position of the ink outlet of the corresponding head module 141 relative to the to-be-printed member 200.

It should be noted that the sensor 142 may be located right below the ink outlet, that is, the distance between the sensor 142 and the ink outlet in the first direction is zero, and in this structure, when the sensor 142 detects the to-be-printed member 200, the ink outlet of the ink cartridge may be directly controlled by the control system 180; or, the ink outlet of the ink box is controlled in a delayed manner; it should be understood that in other embodiments, the ink outlet may be a set distance from the sensor 142 in the first direction 001, in which case the sensor 142 is located directly below the member to be printed before the ink outlet, and when the sensor 142 detects the member to be printed 200, the control system 180 does not immediately start the ink cartridge, but starts the ink cartridge at least when the member to be printed 200 continues to move in the first direction by the set distance to ensure that the printing operation is performed smoothly.

Meanwhile, the printing system 100 further includes a table 150, a conveyor belt 160, and an encoder synchronizing wheel 170 disposed on the table 150, the conveyor belt 160 being connected to the table 150 for conveying the to-be-printed member 200 in the first direction 001. The encoder sync wheel 170 is communicatively coupled to the control system 180, and the encoder sync wheel 170 is configured to detect the linear velocity of the conveyor belt 160 and transmit the linear velocity to the control system 180, and the control system 180 controls the print operation of the print mechanism based on the linear velocity. Optionally, the encoder synchronizing wheel 170 includes an incremental grating encoder, an encoder mounting component, and a wheel, and the size matching between the incremental grating encoder and the wheel requires frequency division by the number of pulses generated by 1 rotation of the main shaft of the incremental grating encoder, and then matches with the printing resolution of the nozzle module 141, so as to calculate the circumference and diameter of the wheel. The incremental grating encoder is fixed on the workbench 150 after being matched with the wheel, and when the wheel rotates, the incremental grating encoder outputs voltage type synchronous signals to be transmitted to the control system 180 for speed detection and calculation, and finally, the printing command is controlled according to the real-time speed. The linear velocity of the conveyor belt 160 is calculated to control the nozzle module 141 to print, thereby avoiding distance error caused by slippage of the conveyor belt 160 and improving printing precision.

In this embodiment, the print-ready-to-print material 200 is set as a rectangular parallelepiped workpiece, the print-ready-to-print material 200 has a front side, a top surface 210, a back side, a bottom surface, a left side 220, and a right side 230, the front side, the top surface 210, the back side, and the bottom surface are sequentially connected end to end, the left side 220 is connected to one side of the front side, the top surface 210, the back side, and the bottom surface, and the right side 230 is connected to the other side of the front side, the top surface 210, the back side, and the bottom surface. And, the distance between the ink outlet of the ink cartridge and the sensor 142 in the first direction 001 is zero.

In this embodiment, the printing method includes the steps of:

the printing position of the to-be-printed material 200 is first matched with a plurality of printing mechanisms. Referring to fig. 3, for example, the top surface 210, the left side surface 220 and the right side surface 230 of the to-be-printed object 200 all need to be printed. So, set up three printing mechanism on workstation 150, a plurality of printing component 140 of every printing mechanism all have the interval on first direction 001, and adjacent printing component 140's interval can set up to equal, also can set up to vary, and the concatenation can as required. Wherein the first printing mechanism 110 is used to print the top surface 210, and the first printing mechanism 110 is located behind the second printing mechanism 120 and the third printing mechanism 130; the second printing mechanism 120 and the third printing mechanism 130 are used for printing the left side surface 220 and the right side surface 230, respectively, wherein the second printing mechanism 120 and the third printing mechanism 130 are arranged at intervals in a second direction 002 having an included angle with the first direction 001. In this embodiment, an example in which the angle between the first direction 001 and the second direction 002 is 90 ° will be described. Before printing, the to-be-printed piece 200 is placed on the conveying belt 160, the bottom surface of the to-be-printed piece 200 is in contact with the conveying belt 160, the front side surface and the rear side surface are arranged at intervals in the first direction 001, the front side surface is located in front of the first direction 001, and the left side surface 220 and the right side surface 230 are arranged at intervals in the second direction 002. Also, the positional relationship of the to-be-printed member 200 in the second direction 002 with respect to the first printing mechanism 110 is adjusted, thereby determining the width of the print content on the top surface 210 in the second direction 002.

Then, the conveyor belt 160 is started, the conveyor belt 160 drives the to-be-printed piece 200 to approach the first printing mechanism 110 in the first direction 001, the sensor 142 of the printing assembly 140 located at the rear end in the first direction 001 among the four printing assemblies 140 of the first printing mechanism 110 detects the to-be-printed piece 200 first, and then sends position information to the control system 180, and the control system 180 can directly control the operation of the nozzle modules 141 of the four printing assemblies 140 of the first printing mechanism 110, so that the printing is started from the edge of the to-be-printed piece 200. Alternatively, the control system 180 delays the operation of the nozzle modules 141 of the four printing assemblies 140 of the first printing mechanism 110, for example, when the sensor 142 detects the to-be-printed item 200, the to-be-printed item 200 continues to move a set distance in the first direction 001, and then the nozzle modules 141 of the four printing assemblies 140 are activated, so that the printing is started from a position away from the edge of the to-be-printed item 200 by the set distance. The distance that the to-be-printed item 200 moves in the first direction 001 is detected by the encoder synchronizing wheel 170 and transmitted to the control system 180, improving the accuracy of the position of the to-be-printed item 200. Similarly, the second printing mechanism 120 and the third printing mechanism 130 respectively start the nozzle module 141 after detecting the to-be-printed item 200 through the respective sensors 142. It should be understood that, because the relative position relationship of the four nozzle modules 141 of the four printing assemblies 140 of each printing mechanism is determined, and the distance parameters of the adjacent nozzle modules 141 can be input to the control system 180 in advance, after the sensor 142 of one printing assembly 140 of the four printing assemblies 140 of each printing mechanism detects the to-be-printed item 200, the control system 180 can calculate the position information of the nozzle modules 141 of the remaining printing assemblies 140 relative to the to-be-printed item 200 according to the position information, thereby controlling the four printing assemblies 140 to print. Obviously, according to different printing requirements, the nozzle module 141 of each printing assembly 140 can be activated after detecting the to-be-printed item 200 by the respective sensor 142, and the printing assembly is flexible to use and wide in application range.

Referring to fig. 3 and 4, it should be understood that in other embodiments, the relative positions of the printing mechanisms may be adjusted as needed to accommodate different scenes. For example, three printing mechanisms may be used to print the same printing surface, or two printing mechanisms may be used to print the same printing surface, and another printing mechanism may be used to print another printing surface, and so on, which are not listed in this embodiment. Meanwhile, as the spray head module 141 and the sensor 142 of each printing assembly 140 are integrated, the relative position relationship between the spray head module 141 and the sensor 142 cannot be changed, and after the position of each printing mechanism is adjusted, the positions of the spray head module 141 and the sensor 142 do not need to be calibrated, so that the adjustment is convenient and reliable.

In addition, according to the printing method provided by the embodiment, because the plurality of printing mechanisms are independently designed, and each printing mechanism has a function of detecting the position of the piece to be printed, the printing method is not limited to printing a regular workpiece, and an irregular workpiece can be printed by matching the plurality of printing mechanisms, so that different positions of the same printing surface of the irregular workpiece can be printed.

According to the printing method provided by the embodiment, after the positions of the to-be-printed piece 200 and the plurality of printing mechanisms are calibrated after the printing content is determined, printing can be performed, different positions or different printing surfaces of the same printing surface of the to-be-printed piece 200 can be printed after one-time positioning, the operation efficiency is improved, errors caused by repeated positioning for many times are reduced, and the printing quality is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A printing method adapted for use in a printing system including a plurality of printing mechanisms, wherein each of the printing mechanisms includes at least one printing assembly including an integral printhead module and a sensor for detecting a position of an ink outlet of the printhead module relative to a member to be printed, comprising the steps of:

and in the process that the pieces to be printed move along a first direction relative to the plurality of printing mechanisms, the plurality of printing mechanisms are utilized to print different positions or different faces to be printed of the same face to be printed of the pieces to be printed.

2. The printing method according to claim 1, wherein:

and when the sensor detects the piece to be printed, starting the nozzle module of the printing assembly corresponding to the sensor.

3. The printing method according to claim 1, wherein:

and when the sensor detects the piece to be printed, the nozzle module of the printing assembly corresponding to the sensor is started in a delayed mode.

4. A printing method according to claim 3, characterized in that:

the step of starting the nozzle module of the printing assembly corresponding to the sensor in a delayed manner comprises the step of starting the corresponding nozzle module after the to-be-printed piece continues to move for a set distance along the first direction when the sensor detects the to-be-printed piece.

5. The printing method according to claim 1, wherein:

and driving the to-be-printed piece to move relative to the plurality of printing mechanisms along the first direction by using a conveying belt.

6. The printing method according to claim 5, wherein:

arranging an encoder synchronizing wheel which is in communication connection with a control system on the conveying belt so as to detect the transmission speed of the conveying belt; and the control system controls the printing mechanism to print according to the transmission speed.

7. The printing method according to claim 1, wherein:

when the printing mechanism comprises a plurality of printing components, the printing mechanism is started to print when any one of the printing components detects the piece to be printed.

8. The printing method according to claim 7, wherein:

before the step of starting the printing mechanism to print when any one of the printing assemblies detects the piece to be printed, the method further comprises the step of adjusting the number of the printing assemblies or the arrangement mode of the printing assemblies.

9. The printing method according to claim 7, wherein:

before the step of starting the printing mechanism to print when any one of the printing assemblies detects the piece to be printed, the method further comprises the step of inputting a distance parameter of the adjacent printing assembly in the plurality of printing assemblies in the first direction in a control system.

10. The printing method according to claim 1, wherein:

the method also comprises the step of adjusting the relative positions of the printing piece to be printed and the printing mechanisms along a second direction with an included angle with the first direction to determine the width of the printing content before the step of moving the printing piece to be printed relative to the printing mechanisms along the first direction.