Packaging printing method and system

Abstract

The embodiments of the present invention disclose a packaging printing method and a system. The packaging printing method comprises: marking a paper to be printed, the mark content comprises a trimming mark and a registration mark; obtaining cutting position data based on the trimming mark and registration mark; laser-cutting the edge and the positioning hole of the paper to be printed based on the cutting position data; based on the position of the positioning hole, placing the paper to be printed on a corresponding preset printing position for printing in the specified area. Through the embodiments of this application, the technical problem of how to improve the efficiency and quality of packaging printing is addressed.

Description

[0001] Packaging Printing Method and System

[0002] Technical Field

[0003] The present invention relates to the field of printing technology, particularly to a packaging printing method and a system.

[0004] Background

[0005] In the field of packaging printing, various post-print processing methods are typically employed to enhance appearance quality and meet usage requirements. For packaging prototype printing or small batch production, alignment is still achieved manually to accomplish overprinting. This process involves first completing digital printing with a printer, then using a desktop flatbed printer to apply varnish in specified areas, requiring edge trimming and alignment of punch holes during printing. However, alignment of printed sheets is currently done using registration marks and lines on a transparent plate in the punch machine, which may require repeated alignment, leading to lengthy processing times, low efficiency, and an increased likelihood of alignment errors, ultimately reducing print quality.

[0006] Summary

[0007] The present invention aims to at least address one of the technical problems in the prior art. To this end, the present invention discloses a packaging printing method and a system to resolve the technical problem of how to improve the efficiency and quality of packaging printing.

[0008] In the first aspect, the present invention provides a packaging printing method, it comprises: marking a paper to be printed, the mark content comprises a trimming mark and a registration mark; obtaining cutting position data based on the trimming mark and registration mark; laser-cutting the edge and the positioning hole of the paper to be printed based on the cutting position data; based on the position of the positioning hole, placing the paper to be printed on a corresponding preset printing position for printing in the specified area.

[0009] In one embodiment of the aforementioned packaging printing method, obtaining cutting position data based on the trimming mark and the registration mark, which comprises: capturing the trimming mark and the registration mark by using a visual detection system, and generating corresponding cutting position data in the visual detection system. By directly capturing the trimming mark and registration mark with the visual detection system, cutting position data can be obtained directly, saving significant time otherwise required for manual alignment of printing sheets. This approach enhances the overall efficiency of the printing process. Additionally, capturing positions through a visual detection system can effectively reduce manual alignment errors, improving alignment accuracy and thereby contributing to enhanced print quality.

[0010] Specifically, capturing the trimming mark and the registration mark by using a visual detection system, and generating corresponding cutting position data in the visual detection system, which comprises: capturing the trimming mark and the registration mark by using a visual detection system, obtaining coordinate positions of the trimming mark and the registration mark in the visual detection system; based on the coordinate position of the trimming mark in the visual detection system, obtaining cutting position data for the edge; based on the coordinate position of the registration mark in the visual detection system and the fixed relative position relationship with the positioning hole, obtaining cutting position data for the positioning hole. Since the paper to be printed contains both trimming and registration marks, the coordinate positions of these marks in the visual detection system can be directly through the visual capture mark. Furthermore, as the position of the positioning hole is fixed relative to the position of the registration mark, obtaining the coordinates of the registration mark and its relative position to the positioning hole allows for calculating the cutting position data for the positioning hole within the visual detection system.

[0011] In one embodiment of the aforementioned packaging printing method, laser-cutting the edge and positioning hole of the paper to be printed based on the cutting position data, which comprises: compensating for the cutting position data, obtaining the actual cutting position data corresponding to a laser cutting system; based on the actual cutting position data, laser-cutting the edge and positioning hole of the paper to be printed.

[0012] Based on laser cutting technology, the laser cutting system can directly replace traditional paper cutters and hole punchers to achieve precise edge cutting and hole punching. Due to possible positional deviations between the laser cutting system and the visual detection system, data compensation is needed to obtain the actual cutting position data corresponding to the laser cutting system.

[0013] Specifically, compensating for the cutting position data, obtaining the actual cutting position data corresponding to a laser cutting system, which comprises: obtaining the positional deviation between the laser cutting system and the visual detection system; compensating for the cutting position data generated in the visual detection system based on the positional deviation, obtaining the actual cutting position data corresponding to the laser cutting system.

[0014] Wherein, obtaining the positional deviation between the laser cutting system and the visual detection system, which comprises: obtaining origin coordinates of the visual detection system and the laser cutting system in the same coordinate system; calculating the difference between the origin coordinates of the visual detection system and the laser cutting system, obtaining the positional deviation between the laser cutting system and the visual detection system.

[0015] Compensating for the cutting position data generated in the visual detection system based on the positional deviation, obtaining the actual cutting position data corresponding to the laser cutting system, which comprises: overlaying the positional deviation onto the cutting position data, obtaining the actual cutting position data corresponding to the laser cutting system.

[0016] The relative positions between the respective coordinates in the laser cutting system and the visual detection system are consistent, but there is a certain offset between the origins of their coordinate systems. This offset results in a consistent deviation between corresponding coordinates in both systems. Therefore, by overlaying this origin deviation onto the coordinate positions of each mark obtained in the visual detection system, the actual corresponding position coordinates in the laser cutting system can be obtained, which are the actual cutting position data.

[0017] In one embodiment of the aforementioned packaging printing method, based on the position of the positioning hole, placing the paper to be printed on the corresponding preset printing position for printing in the specified area, which comprises: aligning the positioning hole with a corresponding positioning mechanism on a printing master plate; placing the paper to be printed on the printing master plate according to the aligned position, ensuring the paper to be printed is placed on the corresponding preset printing position; performing UV printing in the specified area of the paper to be printed.

[0018] Based on the above steps, the paper to be printed with pre-punched holes is placed on the printing master plate, where the positioning mechanism on the printing master plate corresponds to the position of the positioning hole. Therefore, by placing the paper in the corresponding position through the positioning hole, UV printing can be directly started in the specified area. As the positioning hole from laser cutting is precise, it enhances the accuracy of the paper’s placement on the master plate, thus improving the precision of the UV gloss printing in the specified area and ultimately enhancing the print quality.

[0019] In the second aspect, the present invention provides a packaging printing system, it comprises: a marking device, configured to mark the paper to be printed, wherein the marks comprise a trimming mark and a registration mark; a visual detection system, configured to obtain cutting position data based on the trimming mark and the registration mark; a laser cutting system, configured to laser-cut the edge and the positioning hole of the paper to be printed based on the cutting position data; a printing device, with a preset printing position, the paper to be printed is placed on the preset printing position based on the position of the positioning hole, enabling the printing device to print in the specified area.

[0020] In one embodiment of the aforementioned packaging printing system, the visual detection system is configured to capture the trimming mark and the registration mark, generate corresponding cutting position data, and transmit it to a laser cutting system. By utilizing the marking capture function of the visual detection system, the marks are captured, and corresponding cutting position data is generated in the system, which is then sent to the laser cutting system for cutting. In the present invention, the visual system uses a CCD visual system. In one embodiment of the aforementioned packaging printing system, the registration mark has a fixed relative position with respect to the positioning hole, the visual detection system is configured to obtain cutting position data for the positioning hole based on the coordinate position of the registration mark and the fixed relative position relationship. Since the positional relationship between the registration mark and the positioning hole is fixed, once the registration mark is captured by the visual detection system, the position of the positioning hole in the visual detection system can be determined.

[0021] In one embodiment of the aforementioned packaging printing system, the laser cutting system is configured to compensate for the cutting position data from the visual detection system, obtaining actual cutting position data. Since there is a positional deviation between the laser cutting system and the visual detection system, the position in the visual detection system needs to be compensated accordingly to obtain the actual cutting position for precise cutting. In the present invention, the laser cutting system and the visual detection system have a fixed positional deviation; the laser cutting system is configured to compensate for the cutting position data generated in the visual detection system based on the positional deviation, obtaining actual cutting position data. The relative position of each mark to the origin of each coordinate system is consistent. Therefore, as long as the deviation between the corresponding coordinates is obtained, the actual cutting position can be determined. Furthermore, the laser cutting system comprises a laser, the laser is configured to laser-cut the edge and the positioning hole of the paper to be printed based on the actual cutting position data. Finally, the laser performs the edge cutting and hole punching on the paper.

[0022] In one embodiment of the aforementioned packaging printing system, the printing device comprises a master plate, the master plate has a positioning mechanism matching the positioning hole; the printing device is configured to perform UV printing in the specified area of the paper to be printed when the paper to be printed is placed on the master plate at the position aligned with the positioning hole and the positioning mechanism. The position of the positioning mechanism on the master plate is fixed, which is used to cooperate with the positioning holes to place the paper in the accurate position so as to precisely perform printing in the specified area. Therefore, the positioning mechanism needs to be conveniently aligned with the positioning holes. In the present invention, the positioning mechanism is a bolt. The bolt can be inserted into the positioning hole. When placing the paper to be printed, it can be directly sleeved on the corresponding bolt through the positioning hole to achieve alignment.

[0023] In one embodiment of the aforementioned packaging printing system, the system further comprises a workstation, the workstation is capable of adsorbing or securing the paper to be printed, providing a platform for the operation of the visual system and / or the laser cutting system. The workstation with the function of adsorption or fixation can keep the paper to be printed flat and fixed for the operation. Further, the workstation adopts a three-axis platform to carry out the operations of capturing marks or cutting in different areas.

[0024] The above one or more technical solutions of the present invention have at least one or more of the following beneficial effects:

[0025] During the implementation of the technical solutions of the present invention, replacing the paper cutter and the hole puncher with the laser cutting technology enables more precise cutting of page edges and positioning holes, thereby making it easier to align the printed materials for precise printing in the specified areas and improving the printing quality. By obtaining the cutting position data from the marks and combining it with laser cutting, a significant amount of time for aligning the papers can be saved. The process steps are simple, effectively enhancing the printing efficiency. Meanwhile, since no manual alignment is required, this printing method is easy to apply in large- scale production printing, featuring high stability and consistent quality.

[0026] Additional aspects and advantages of the invention will be partially described in the following description, some will become apparent from the following description, and others may be learned through the practice of the invention.

[0027] Brief Description of the Drawings

[0028] Referring to the accompanying drawings, the disclosed content of the present invention will become more understandable. It is easily understood by those skilled in the art that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. Moreover, similar numbers in the figures are used to represent similar components, among which:

[0029] Figure 1 is a schematic diagram of the main process flow of a packaging printing method according to one embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the paper to be printed with its CAD drawing and partial coordinates according to one embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the paper to be printed with its drawing and partial coordinates in the visual detection system according to one embodiment of the present invention;

[0032] Fig. 4 is a schematic diagram of the paper to be printed with its drawing and partial coordinates in the laser cutting system according to one embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of the working structure of a packaging printing system according to one embodiment of the present invention. The references in the figures are as follows: 100 - Workstation; 200 - Visual detection system; 201 - Industrial camera; 202 - Reflecting mirror; 203 - Light source; 300 - Laser cutting system; 301 - Laser; 400 - Paper to be printed.

[0034] Detailed Description

[0035] The following describes some embodiments of the present invention with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] As described in the background, the existing packaging printing methods have overly complicated processes. They require a paper cutter to trim the edges and a hole puncher to punch holes. It is extremely difficult and inaccurate to align the printed papers according to the registration marks and lines on the transparent plate of the hole puncher. This mainly depends on the operator's experience and eyesight. The alignment accuracy is over 0.2 millimeters, and the printing efficiency is low. Multiple repetitions are needed to align the printed papers. Usually, it takes 5 to 10 minutes to complete the alignment of a single paper. Once there is an alignment deviation or failure, it will lead to a decline in the final overprinting quality, and the printed products will become useless. Meanwhile, due to the varying quality of manual paper alignment, it is difficult for the existing printing methods to be popularized on a large scale. Based on this, the present invention proposes a packaging printing method and system that can improve the printing quality and efficiency.

[0037] Referring to Figure 1, Figure 1 is a schematic diagram of the main process flow of a packaging printing method according to one embodiment of the present invention. As shown in Figure 1, a packaging printing method in the embodiment of the present invention is applied to a packaging printing system. The packaging printing system mainly comprises a workstation, a visual detection system, and a laser cutting system. Based on the visual detection system and the laser cutting system, the paper to be printed on the workstation is positioned and cut to meet the requirement of printing in the specified area.

[0038] Specifically, the packaging printing method mainly comprises the following steps S101 - SI 04:

[0039] Step SI 01 : marking a paper to be printed, the mark content comprises a trimming mark and a registration mark; in this embodiment, the method of marking the paper to be printed can be achieved through digital printing. The printed content comprises the trimming marks for the edges and the registration marks used to locate the positions of the positioning holes. Wherein, digital printing can be carried out by using a digital printer or other marking devices. It is only necessary to make the positioning marks on the paper that conform to the specified edges and hole positions.

[0040] Step SI 02: obtaining cutting position data based on the trimming mark and registration mark; in one implementation, capturing the trimming mark and the registration mark by using a visual detection system, and generating corresponding cutting position data in the visual detection system. Specifically, the paper to be printed with marks is placed on the workstation, and the marks are captured by the visual detection system. The simulated contour generates the corresponding cutting position data in this visual detection system. Wherein, the coordinate position of the trimming mark is the position of the cutting edge line, and the relative position between the coordinate position of the registration mark and the positioning hole is fixed. Therefore, the cutting position of the positioning hole can also be obtained through the coordinates of the registration mark. In this embodiment, the visual detection system uses a CCD visual system.

[0041] Step SI 03: laser-cutting the edge and the positioning hole of the paper to be printed based on the cutting position data; in this embodiment, the paper to be printed is cut along the edges and punched holes using the laser cutting technology. The laser cutting technology can directly replace the two devices of the paper cutter and the hole puncher, simplify the packaging printing process, and has a higher cutting accuracy, thus improving the packaging printing quality.

[0042] In one implementation, if the visual detection system is regarded as a part of the laser cutting system, that is, the laser cutting system and the visual detection system adopt the same control and calculation system, they can be considered to have the same coordinate system. Therefore, the cutting position obtained by the visual detection system is the actual cutting position, and the laser cutting system can directly perform the corresponding cutting and punching operations according to the obtained cutting position.

[0043] In one implementation, there is a certain deviation in the coordinate origins of the visual detection system and the laser cutting system. It is necessary to compensate the cutting position data obtained by the visual detection system to obtain the corresponding actual cutting position data in the laser cutting system. The laser cutting parameters are set according to the actual cutting position data, so as to perform laser cutting on the edges and positioning holes of the paper to be printed. Specifically, obtaining the positional deviation between the laser cutting system and the visual detection system; compensating for the cutting position data generated in the visual detection system based on the positional deviation, obtaining the actual cutting position data corresponding to the laser cutting system. The positional deviation refers to the coordinate deviation of the same points in the coordinate system. The deviations of these same points are consistent. To facilitate the calculation of the positional deviation, the deviation is usually calculated through the origin coordinates of their respective systems.

[0044] For example, as shown in Figures 2 - 4, the process of coordinate conversion and compensation calculation between the visual detection system and the laser cutting system. Figure 2 shows the paper to be printed with marks after digital printing, which can also be regarded as the original printing drawing in CAD. Its origin is the paper origin. The dotted lines at ( and @ are the trimming marks of the edges, @ and (7) are the registration marks, and and @ are positioning holes. The relative distances between the registration marks and each positioning hole remain unchanged. Therefore, once the coordinates of the registration marks are known, the position coordinates of each positioning hole can be obtained. For example, when the coordinates of the registration mark @ are (X, Y), the coordinates of the positioning holes (3), and @ are fl(X, Y), f2(X, Y), and f3(X, Y) respectively. Figure 3 shows the image obtained in the visual detection system. In the coordinates of the visual detection system, the paper origin is still (0, 0). The captured registration mark @ has the corresponding position data (X, Y, 0 ), wherein 0 represents the angle between the printed paper and the X-axis, that is, the visual detection system can obtain the deviation angle of the paper to be printed placed on the workstation. There is no alignment deviation, and there is no need to repeatedly place the paper for alignment. Figure 4 shows the drawing coordinates of the laser cutting system. When the origin of the visual detection system is (0, 0), the coordinate origin of the laser cutting system is ( A X, Y). After the visual detection system sends the position data (X, Y, 0 ) of the registration mark @ to the laser cutting system, the finally compensated coordinates of the registration mark @ are (X + A X, Y + A Y, 0 ). Correspondingly, according to the relative position relationship of the drawing, the actual cutting position data of the positioning holes and @ can be calculated, that is, fl(X + A X, Y + A Y, 0 ), f2(X + A X, Y + A Y, 0 ), and f3(X + A X, Y + A Y, 0 ). Wherein, since the paper to be printed is stationary on the workstation when the visual detection system is performing detection and the laser cutting system is performing cutting, 0 remains unchanged.

[0045] Step SI 04: based on the position of the positioning hole, placing the paper to be printed on a corresponding preset printing position for printing in the specified area.

[0046] In one implementation, the purpose of punching holes is to enable the paper to be printed to be placed on the corresponding preset printing position. There is a printing master plate on the printer, and the master plate is equipped with a positioning mechanism used to cooperate with the positioning holes. Only when the positioning holes and the positioning mechanism are perfectly matched can the paper to be printed be accurately placed on the master plate, so that printing can be precisely carried out in the specified area. Usually, the positioning mechanism is fixed on the printing master plate and cannot be changed. Therefore, whether the positioning holes are accurate or not directly affects the printing quality. Based on the above steps S101 - SI 03, using the visual detection system and the laser cutting system for positioning and cutting effectively improves the precision of cutting the edges and punching holes, thus enabling the printer to finally print varnish precisely in the specified area and enhancing the printing quality. In this embodiment, the positioning mechanism can adopt bolts, and the paper to be printed can be directly sleeved on the bolts through the positioning holes for final positioning.

[0047] Based on the above steps S101 - SI 04, in the embodiments of the present invention, by using the visual detection system to capture marks to obtain cutting position data and combining it with laser cutting of page edges and positioning holes, a large amount of time for aligning papers can be saved. The precision of positioning and cutting positioning holes is higher, with the positioning accuracy reaching 0.03 millimeters. By replacing the paper cutter and the hole puncher with the laser cutting technology, the process steps are simple, it is easy to carry out large-scale production printing, and it has high stability and consistent quality.

[0048] It should be noted that although the various steps in the above embodiments have been described in a specific sequential order, those skilled in the art can understand that, in order to achieve the effects of the present invention, different steps do not necessarily have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders, and these variations are all within the protection scope of the present invention.

[0049] Further, the present invention provides a packaging printing system, it comprises: a marking device, configured to mark the paper to be printed, wherein the marks comprise a trimming mark and a registration mark; a visual detection system, configured to obtain cutting position data based on the trimming mark and the registration mark; a laser cutting system, configured to laser-cut the edge and the positioning hole of the paper to be printed based on the cutting position data; a printing device, with a preset printing position, the paper to be printed is placed on the preset printing position based on the position of the positioning hole, enabling the printing device to print in the specified area.

[0050] Referring to Figure 5, the paper to be printed 400 is placed on the workstation 100. The paper to be printed 400 has undergone digital printing by a marking device such as a digital printer. The printed content comprises the trimming marks of ( and @ and the registration marks of @ and (7). The laser cutting system 300 needs to remove the margins along the trimming marks and punch holes; the positions of the positioning holes represented by and @ need to be located and searched for by the registration marks of @ or (7). The positioning holes are fixedly matched and set with the printing master plate of the printer, and their positions relative to the registration marks are relatively fixed. The visual detection system 200 captures the registration marks and the trimming marks, simulates the contours and sends the position data to the laser cutting system 300 so that the laser cutting system 300 can perform cutting and punching according to the position data. Finally, the paper to be printed 400 with punched holes is placed in the printing device according to the positions of the positioning holes for printing in the specified area, and (8) is the printing pattern of the specified area.

[0051] In one implementation, the visual detection system 200 adopts a CCD visual system, which comprises an industrial camera 201, a reflecting mirror 202, a light source 203 and a light source controller. In actual use, appropriate equipment can be selected according to the image quality. In this embodiment, the light source controller conducts the overall control of the entire system. The industrial camera 201 cooperates with the reflecting mirror 202 and the light source 203 to collect the images of the paper to be printed 400. The light source controller captures the registration marks and the trimming marks, performs simulation contour calculation, obtains the position data (including the coordinates of each point) of the trimming marks and the registration marks, and then sends them to the laser cutting system 300.

[0052] In one implementation, the laser cutting system 300 comprises a laser 301 and a laser controller. The laser 301 is used to cut the paper to be printed 400. It can be an ultraviolet laser, a fiber laser, a CO2 laser, etc. The appropriate type of laser cutting machine can be selected according to the performanceprice ratio. The laser controller is used to receive the position data from the visual detection system 200 and calculate the actual cutting position data in the laser cutting system 300. The details of the calculation and compensation process are the same as those in the aforementioned calculation and compensation method of the packaging printing method, and will not be repeated here. The laser 301 executes the corresponding cutting commands according to the laser cutting parameters configured by the laser controller. In one implementation, the workstation 100 adopts a three-axis platform, which comprises X, Y, and Z-axis movements. Since printed products are usually of a relatively large size (with a width range of 200 - 600 mm), while the working area of the laser 301 is relatively small (with a width range of only 100 - 200 mm), the platform needs to move along the X and Y directions so as to perform cutting in different areas. Meanwhile, it is also necessary to move the laser 301 along the Z direction to adjust the laser focusing point and obtain the minimum spot size. Further, the workstation 100 has an adsorption function, which can ensure the flatness and fixation of the paper to be printed 400 before laser cutting.

[0053] Based on the above implementation, during the use of the packaging printing system, first, the paper to be printed 400 is printed using a digital printer. The printed content of the paper to be printed 400 comprises trimming marks and registration marks. Then, the printed paper to be printed 400 is placed on the workstation 100, which is a laser cutting workstation. The CCD visual system is used to capture the registration marks and the trimming marks, simulate the contours to generate the corresponding position data, and send the position data to the laser controller of the laser cutting system. After that, the actual cutting position data is calculated according to the position data and the corresponding deviations. The laser controller sets the laser cutting parameters based on the actual cutting position data and controls the laser 301 to start cutting the edges and positioning holes. The paper to be printed 400 with punched holes is placed on the master plate of the desktop flatbed UV printer, and the bolts fixed on the master plate are inserted into the punched holes. For each printing device, the positions of the bolts are unchangeable. Therefore, the distances between the positioning holes remain constant. Finally, the desktop flatbed UV printer is used to print UV varnish in the specified area to complete the printing. It should be noted that Figure 5 is a schematic diagram of some components in the packaging printing system and is not intended to convey the specific positions of various components. The packaging printing system also comprises components not shown in the figure, such as various controllers and operation tables.

[0054] Each system or device in the embodiments of the present invention also comprises a memory and a processor. The memory may be configured to store programs that execute the steps of the aforementioned method embodiments. The processor may be configured to execute these programs stored in the memory, which include, but are not limited to, programs for performing the packaging printing method of the embodiments described above. For ease of explanation, only the components related to the embodiments of the present invention are shown, and specific technical details not disclosed here can be found in the method section of the embodiments.

[0055] In embodiments of the present invention, each controller may be a control device formed by various electronic equipment. In some possible implementations, the controller may comprise multiple storage devices and multiple processors. The program that executes the packaging printing method of the above method embodiments may be divided into several sub-programs, with each sub-program being loaded and run by a processor to perform different steps of the packaging printing method. Specifically, each subprogram may be stored in a different memory, and each processor may be configured to execute one or more programs in the storage devices in order to collectively implement the packaging printing method of the embodiments. Thus, each processor executes different steps of the packaging printing method in the embodiments to jointly realize the method.

[0056] The multiple processors mentioned above may be processors deployed on the same device. For example, the computer device could be a high- performance system consisting of multiple processors, where these processors are configured within this high-performance device. Additionally, the multiple processors may also be deployed on different devices. For example, the computer device could be a server cluster, with the processors located on various servers within the cluster. Those skilled in the art will readily understand that, for the sake of brevity and clarity, the specific operating process and related details of the controller can be referenced in the description of the embodiments of the packaging printing method, which will not be further elaborated here.

[0057] It is understood by those skilled in the art that all or part of the processes in the method of the above embodiments of the present invention can also be executed by directing relevant hardware through a computer program. This computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can carry out the steps of the various embodiments of the method. The computer program comprises computer program code, which may be in the form of source code, object code, executable files, or other intermediate forms. The computer-readable storage medium may comprise any entity or device capable of carrying the computer program code, such as media, USB drives, portable hard drives, magnetic disks, optical discs, computer memory, read-only memory (ROM), randomaccess memory (RAM), electrical signals, telecommunication signals, and software distribution media. It should be noted that the content included in the computer-readable storage medium may be adjusted according to legislative and patent practices within different jurisdictions. For example, in some jurisdictions, in line with legislative and patent practices, computer-readable storage media may exclude electrical signals and telecommunication signals.

[0058] Further, it should be understood that the configuration of each device and system is solely for the purpose of illustrating the functional units of the system in the present invention. The physical components corresponding to these devices and systems can be the processor itself, or a part of the software within the processor, a part of the hardware, or a combination of both software and hardware. Therefore, the quantity of each device and system shown in the figure is merely illustrative.

[0059] It is understood by those skilled in the art that, each module in the system can be adaptively split or combined. Such splitting or combining of specific modules does not cause the technical solution to deviate from the principles of the present invention. Therefore, the technical solutions resulting from such splitting or combining will fall within the scope of protection of the present invention.

[0060] It should be understood that each part of the present invention may be implemented by hardware, software, firmware or combinations thereof. In the above implementations, multiple steps or methods may be implemented with software or firmware stored in memory and executed by an appropriate instruction execution system. For example, if it is implemented by hardware, as in another implementation, it can be implemented by any one of the following technologies known in the art or combinations thereof: discrete logic circuits with logic gate circuits for implementing logic functions for data signal, special integrated circuits with appropriate combined logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0061] In the description of this specification, the referential terminology "an embodiment," "some embodiments," "example," "specific example," or "some examples" means that specific features, structures, materials, or characteristics described in connection with the embodiment or example are comprised in at least one embodiment or example of the present invention. In this specification, the indicative expression of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials, or characteristics may be combined in any suitable way in any one or more embodiments or examples.

[0062] Moreover, the terms "first," "second," etc., are used merely for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the characteristics defined as "first," "second," etc., may explicitly or implicitly comprise at least one such characteristic. In the description of this invention, the term "multiple" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0063] In the present invention, unless explicitly defined and limited, terms such as "mounting," "connecting," "connection," "fixing," etc., should be understood in a broad sense. For instance, the connection can be a fixed connection or a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary medium, it can be the internal communication of two components or the interaction between two components, unless explicitly defined otherwise. Those skilled in the art can understand the specific meanings of these terms in the context of the invention based on the circumstances.

[0064] Although the embodiments of the present invention have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be considered as limiting the invention. Those skilled in the art within the scope of the invention can make variations, modifications, replacements, and variations to the above-described embodiments.

Claims

Claims1. A packaging printing method, characterized in that, it comprises: marking a paper to be printed, the mark content comprises a trimming mark and a registration mark; obtaining cutting position data based on the trimming mark and registration mark; laser-cutting the edge and the positioning hole of the paper to be printed based on the cutting position data; based on the position of the positioning hole, placing the paper to be printed on a corresponding preset printing position for printing in the specified area.

2. The packaging printing method according to claim 1, wherein obtaining cutting position data based on the trimming mark and the registration mark comprises: capturing the trimming mark and the registration mark by using a visual detection system, and generating corresponding cutting position data in the visual detection system.

3. The packaging printing method according to claim 2, wherein capturing the trimming mark and the registration mark by using a visual detection system and generating corresponding cutting position data in the visual detection system comprises: capturing the trimming mark and the registration mark by using a visual detection system, obtaining coordinate positions of the trimming mark and the registration mark in the visual detection system; based on the coordinate position of the trimming mark in the visual detection system, obtaining cutting position data for the edge; based on the coordinate position of the registration mark in the visual detection system and the fixed relative position relationship with the positioninghole, obtaining cutting position data for the positioning hole.

4. The packaging printing method according to claim 2 or claim 3, wherein laser-cutting the edge and positioning hole of the paper to be printed based on the cutting position data comprises: compensating for the cutting position data, obtaining the actual cutting position data corresponding to a laser cutting system; based on the actual cutting position data, laser-cutting the edge and positioning hole of the paper to be printed.

5. The packaging printing method according to claim 4, wherein compensating for the cutting position data, obtaining the actual cutting position data corresponding to a laser cutting system comprises: obtaining the positional deviation between the laser cutting system and the visual detection system; compensating for the cutting position data generated in the visual detection system based on the positional deviation, obtaining the actual cutting position data corresponding to the laser cutting system.

6. The packaging printing method according to claim 5, wherein obtaining the positional deviation between the laser cutting system and the visual detection system comprises: obtaining origin coordinates of the visual detection system and the laser cutting system in the same coordinate system; calculating the difference between the origin coordinates of the visual detection system and the laser cutting system, obtaining the positional deviation between the laser cutting system and the visual detection system.

7. The packaging printing method according to claim 5 or claim 6,wherein compensating for the cutting position data generated in the visual detection system based on the positional deviation, obtaining the actual cutting position data corresponding to the laser cutting system comprises: overlaying the positional deviation onto the cutting position data, obtaining the actual cutting position data corresponding to the laser cutting system.

8. The packaging printing method according to any one of claims 1-7, wherein, based on the position of the positioning hole, placing the paper to be printed on the corresponding preset printing position for printing in the specified area comprises: aligning the positioning hole with a corresponding positioning mechanism on a printing master plate; placing the paper to be printed on the printing master plate according to the aligned position, ensuring the paper to be printed is placed on the corresponding preset printing position; performing UV printing in the specified area of the paper to be printed.

9. A packaging printing system, characterized in that, it comprises: a marking device, configured to mark the paper to be printed, wherein the marks comprise a trimming mark and a registration mark; a visual detection system, configured to obtain cutting position data based on the trimming mark and the registration mark; a laser cutting system, configured to laser-cut the edge and the positioning hole of the paper to be printed based on the cutting position data; a printing device, with a preset printing position, the paper to be printed is placed on the preset printing position based on the position of the positioning hole, enabling the printing device to print in the specified area.

10. The packaging printing system according to claim 9, wherein the visual detection system is configured to capture the trimming mark and the registration mark, generate corresponding cutting position data, and transmit it to a laser cutting system.

11. The packaging printing system according to claim 9 or claim 10, wherein the visual detection system is a CCD vision system.

12. The packaging printing system according to any of claims 9 - 11, wherein the registration mark has a fixed relative position with respect to the positioning hole, the visual detection system is configured to obtain cutting position data for the positioning hole based on the coordinate position of the registration mark and the fixed relative position relationship.

13. The packaging printing system according to any of claims 9 - 12, wherein the laser cutting system is configured to compensate for the cutting position data from the visual detection system, obtaining actual cutting position data.

14. The packaging printing system according to claim 13, wherein the laser cutting system and the visual detection system have a fixed positional deviation; the laser cutting system is configured to compensate for the cutting position data generated in the visual detection system based on the positional deviation, obtaining actual cutting position data.

15. The packaging printing system according to claim 13, wherein the laser cutting system comprises a laser, the laser is configured to laser-cut the edge and the positioning hole of the paper to be printed based on the actualcutting position data.

16. The packaging printing system according to any one of claims 9 - 15, wherein the printing device comprises a master plate, the master plate has a positioning mechanism matching the positioning hole; the printing device is configured to perform UV printing in the specified area of the paper to be printed when the paper to be printed is placed on the master plate at the position aligned with the positioning hole and the positioning mechanism.

17. The packaging printing system according to claim 16, wherein the positioning mechanism is a bolt, the bolt can be inserted into the positioning hole.

18. The packaging printing system according to any of claims 9 - 17, wherein the system further comprises a workstation, the workstation is capable of adsorbing or securing the paper to be printed, providing a platform for the operation of the visual system and / or the laser cutting system.

19. The packaging printing system according to claim 18, wherein the workstation is a three-axis platform.

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