Three-dimensional printing stock printing method, device and equipment for improving R angle and storage medium

Abstract

The invention belongs to the field of ink-jet printing, and provides a three-dimensional printing stock printing method, device and equipment for improving an R angle and a storage medium, and the method comprises the steps that information of all to-be-printed faces of a three-dimensional printing stock is obtained; determining a plurality of R angles according to the to-be-printed surface information; the R angle is subjected to spray printing, and the to-be-printed face is subjected to ink-jet printing; curing the R angle subjected to spray printing and the to-be-printed surface subjected to ink-jet printing; wherein in the spraying and printing process, a spraying gun with a single nozzle sprays a plurality of divergent ink droplets at different angles at a time; according to the ink-jet printing, a plurality of ink droplets with the same angle are jetted at a time through an ink-jet head with a plurality of nozzles, and the nozzles on the ink-jet head are arranged in a row or a plurality of rows. The problem that in the prior art, an R-angle ink layer is not uniform or the ink layer is thin and cannot meet the printing process is solved.

Description

Technical Field

[0001] The present invention relates to the field of inkjet printing, and in particular to a three-dimensional substrate printing method, device, equipment and storage medium for improving R angle. Background Art

[0002] Inkjet printing technology refers to the technology of spraying ink droplets evenly onto the substrate through the nozzle on the nozzle. The transition arc surface at the intersection of the two surfaces of the three-dimensional substrate is the R angle. When the inkjet head is used for inkjet printing, due to the existence of the R angle between the surfaces, when one side is inkjet printed, the direction at the R angle changes from a plane to a vertical plane. The vertical plane accelerates the flow of ink, resulting in a thinner ink layer at the R angle. Increasing the power of the curing lamp to limit the ink flow speed at the R angle results in insufficient time for the ink at the R angle to level, resulting in uneven ink layer thickness at the R angle, which cannot meet the printing process requirements. Summary of the invention

[0003] In view of this, the embodiments of the present invention provide a three-dimensional substrate printing method, device, equipment and storage medium with improved R angle, so as to solve the problems of thin ink layer or uneven ink layer thickness at the R corner of the three-dimensional substrate in the prior art.

[0004] In the first aspect, an embodiment of the present invention provides a three-dimensional substrate printing method with improved R angle, the method is as follows: using a spray gun with a single nozzle to spray print the R angle; using an inkjet head with multiple nozzles to inkjet print the surface to be printed; curing the R angle that has been spray-printed and the surface to be printed that has been inkjet-printed.

[0005] Furthermore, using a spray gun with a single nozzle to spray print the R corner includes: using a spray gun with a single nozzle to spray print all the R corners of the three-dimensional substrate in sequence until all the R corners are sprayed and printed without interruption; using an inkjet head with multiple nozzles to inkjet print the surface to be printed includes: using an inkjet head with multiple nozzles to inkjet print all the surfaces to be printed of the three-dimensional substrate in sequence until all the surfaces to be printed are inkjet printed without interruption.

[0006] Furthermore, using a spray gun with a single nozzle to spray print the R corners includes: after all the surfaces to be printed are inkjet printed without interruption, using a spray gun with a single nozzle to spray print all the R corners of the three-dimensional substrate in sequence until all the R corners are spray printed without interruption.

[0007] Furthermore, using an inkjet head with multiple nozzles to perform inkjet printing on the surface to be printed includes: after all R-angle spray printing is completed without interruption, using an inkjet head with multiple nozzles to perform inkjet printing on all surfaces to be printed of the three-dimensional substrate in sequence until the inkjet printing of all surfaces to be printed is completed without interruption.

[0008] Furthermore, using a spray gun with a single nozzle to perform spray printing on the R corner includes: using a spray gun with a single nozzle to perform spray printing on the R corner and alternately using an inkjet head with multiple nozzles to perform inkjet printing on the surface to be printed.

[0009] Furthermore, in the process of using a spray gun with a single nozzle to spray print the R corner, an inkjet head with multiple nozzles is alternately used to inkjet print the surface to be printed, including: first using a spray gun with a single nozzle to spray print the R corner of each surface of the three-dimensional substrate, and then using an inkjet head with multiple nozzles to inkjet print the surface to be printed, and the printing of each surface is completed alternately in this way.

[0010] Furthermore, spray printing on the R corner includes: obtaining R corner parameter information, spray gun parameter information and the vertical distance between the spray gun nozzle and the R corner vertex; obtaining the spray pressure parameter of the spray gun according to the R corner parameter information, the spray gun parameter information and the vertical distance between the spray gun nozzle and the R corner vertex; and controlling the spray gun to spray print the R corner according to the spray pressure parameter.

[0011] In the second aspect, an embodiment of the present invention provides a three-dimensional substrate printing device with improved R angle, the device comprising: a spray gun spray printing module, which comprises a spray gun with a single nozzle and is used to spray print the R angle; an inkjet head inkjet printing module, which comprises an inkjet head with multiple nozzles and is used to inkjet print the surface to be printed; a curing module, which is used to solidify the R angle that has completed spray printing and the surface to be printed that has completed inkjet printing.

[0012] In a third aspect, an embodiment of the present invention provides a three-dimensional substrate printing device with improved R angle, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, the above method is implemented.

[0013] In a fourth aspect, an embodiment of the present invention provides a storage medium having computer program instructions stored thereon, characterized in that the above method is implemented when the computer program instructions are executed by a processor.

[0014] In summary, the beneficial effects of the present invention are as follows: the R corner of the three-dimensional substrate is printed by spraying with a spray gun. In the spray printing method, the ink thickness, ink volume and pressure sprayed by a single nozzle of the spray gun are thicker, the ink volume is larger and the pressure is greater than the thickness, ink volume and pressure of multiple nozzles of the inkjet head sprayed at one time in the inkjet printing method. Therefore, a spray gun is used for high-pressure and large-ink printing for the R corner, which solves the problem that the ink layer at the R corner is thin when only inkjet printing is used, and increasing the power of the curing lamp leads to uneven ink layer thickness at the R corner. In the field of inkjet printing where the three-dimensional substrate is a power battery, since the power battery is composed of multiple closely arranged battery cells, in order to provide each battery cell with anti-friction, insulation and protection effects, it is necessary to spray ink on the surface of each battery cell and form an ink layer of uniform thickness. Therefore, under the premise of ensuring that the ink layer on each side of the battery cell is uniform and accurate, it is necessary to improve the uniformity of the ink layer thickness of the arc surface of the transition at the intersection of the two sides of the battery cell, i.e., the R corner, so that the ink layer of the entire battery cell meets the printing process requirements. The R corner of this application adopts the printing method of spray printing, which can achieve a smooth R corner paint layer and a paint layer thickness that meets the printing process requirements, thereby improving the spray printing yield of the R corner of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the embodiment of the present invention will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0016] Figure 1 A flow chart of a three-dimensional substrate printing method for improving the R angle of the present invention;

[0017] Figure 2 It is a schematic diagram of the spray gun and R angle position of the present invention;

[0018] Figure 3 It is a schematic diagram of the three-dimensional printed material of the present invention;

[0019] Figure 4 A schematic diagram of the ink droplets diverging at different angles sprayed by the spray printing method of the present invention;

[0020] Figure 5 A schematic diagram of the inkjet printing method of the present invention spraying ink droplets at the same angle;

[0021] Figure 6 It is a schematic structural diagram of a three-dimensional substrate printing device with improved R angle according to the present invention;

[0022] Figure 7 It is a schematic structural diagram of a three-dimensional substrate printing device with improved R angle according to the present invention. DETAILED DESCRIPTION

[0023] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0025] See also Figure 1 The arc surface where the two surfaces of the three-dimensional substrate intersect is the R angle. The embodiment of the present invention provides a three-dimensional substrate printing method for improving the R angle. The method is as follows:

[0026] S1: Use a spray gun with a single nozzle to spray print the R corner; for example, Figure 4 It is shown that a spray gun P1 with a single nozzle forms a plurality of divergent ink droplets at different angles at one time. After the ink droplets are ejected from the nozzle position of the spray gun P1, an inkjet area with a fan-shaped cross section is formed. When printing, the substrate should be within the inkjet range covered by the fan-shaped area. Therefore, the ink droplets ejected by the spray gun P1 start from an origin, and the movement trajectory of each ink droplet is at a different angle. The spray gun P1 can be a piezoelectric spray gun. When the spray gun P1 ejects divergent ink droplets with a fan-shaped cross section, the ink droplets are dense in the middle of the fan, and the density of the ink droplets gradually decreases after being dispersed from the middle of the fan to the surroundings. This allows the dense divergent ink droplets in the middle to cover the arc surface of the R angle when the spray gun P1 is perpendicular to the R angle vertex, and the ink droplet density gradually decreases after being dispersed around to reduce the impact on other surfaces to be printed.

[0027] S2: using an inkjet head with multiple nozzles to perform inkjet printing on the surface to be printed; for example, Figure 5An inkjet head P2 with multiple nozzles is shown. The inkjet head P2 is a regular or irregular rectangular parallelepiped or cube. Multiple nozzles are arranged on one side of the inkjet head P2. The multiple nozzles can be arranged in a row or multiple rows arranged in parallel. When the inkjet head P2 sprays ink, the movement trajectories of different ink droplets are parallel and at the same angle. When multiple nozzles are arranged in multiple rows, the ejected ink droplets will form a three-dimensional area, and the three-dimensional area is in the shape of a regular or irregular quadrangular prism. The ink droplet trajectories ejected by the inkjet head P2 are parallel and uniform, which is suitable for inkjet printing on the flat surface to be printed on the three-dimensional substrate, and can ensure the uniform thickness of the ink layer on the plane.

[0028] S3: Curing the R corners that have been spray-printed and the surface to be printed that has been inkjet-printed.

[0029] Therefore, the three-dimensional substrate printing method with improved R angle of the present invention can avoid the problem of uneven ink layer thickness at the R angle, thereby meeting the printing process requirements.

[0030] Specifically, step S1 includes using a spray gun with a single nozzle to sequentially spray print all R corners of the three-dimensional substrate until all R corners are spray printed without interruption; step S2 includes using an inkjet head with multiple nozzles to sequentially inkjet print all to-be-printed surfaces of the three-dimensional substrate until all to-be-printed surfaces are inkjet printed without interruption. In this way, step S1 and step S2 can respectively efficiently complete the spray printing of the R corners and the inkjet printing of the to-be-printed surfaces.

[0031] Further preferably, step S1 further includes, after all the surfaces to be printed have been inkjet printed without interruption, using a spray gun with a single nozzle to sequentially spray print all the R corners of the three-dimensional substrate until all the R corners have been spray printed without interruption.

[0032] Preferably, step S2 further comprises: after all R corners are spray-printed without interruption, inkjet printing is sequentially performed on all to-be-printed surfaces of the three-dimensional substrate using an inkjet head having multiple nozzles, until all to-be-printed surfaces are inkjet-printed without interruption. Thus, spray printing on the R corners and inkjet printing on the to-be-printed surfaces can be completed sequentially and efficiently.

[0033] Specifically, step S1 includes using a spray gun with a single nozzle to spray print the R corner and alternately using an inkjet head with multiple nozzles to inkjet print the surface to be printed. In this way, the overall printing efficiency of the three-dimensional substrate can be improved to a certain extent.

[0034] More specifically, in the process of spray-printing the R corner using a spray gun with a single nozzle, the step of alternately inkjet-printing the surface to be printed using an inkjet head with multiple nozzles includes: first, spray-printing the R corner of each surface of the three-dimensional substrate using a spray gun with a single nozzle, and then inkjet-printing the surface to be printed using an inkjet head with multiple nozzles, and completing the printing of each surface alternately in this way. In this case, it is beneficial to ensure that the corresponding R corners and the surfaces to be printed of each surface obtain uniformly thick spray and inkjet layers, thereby ensuring that the ink layer thickness of the entire three-dimensional substrate is uniform.

[0035] Specifically, as Figure 2 shown, the spray-printing of the R corner in step S1 includes: obtaining the R corner parameter information, the spray gun parameter information, and the vertical distance between the spray gun nozzle and the R corner vertex; obtaining the spray pressure parameter of the spray gun based on the R corner parameter information, the spray gun parameter information, and the vertical distance between the spray gun nozzle and the R corner vertex; and controlling the spray gun to spray-print the R corner according to the spray pressure parameter. In this embodiment, the spray gun P1 is facing the topmost point of the R corner arc, the vertical distance of the R corner vertex is the vertical distance d from the spray gun P1 to the R corner vertex, and the spray gun P1 parameter information includes the spray ink volume; the R corner parameter information includes: the radius of the circle where the R corner arc is located is r, and the angle of the sector where the R corner arc is located is β. Among them, the vertical distance d is a variable, depending on different printing parameters, namely the spray PASS number and the spray sequence, and the position of the spray gun P1 is adjusted, so d varies within a certain numerical range.

[0036] When the spray ink volume is fixed, it is necessary to control the spray pressure to ensure that the ink layer thickness of the R corner is uniform. After repeated experiments, the mapping relationship between the spray pressure and d, r, β is obtained, and finally a spray pressure parameter a is obtained, where the value range of a is 0 < a ≤ 1, and the calculation formula of the spray pressure is: spray pressure = (π * r * β) / 180° * d * a. When a = 1, the value of d is the maximum value within its variable numerical range.

[0037] When the spray ink volume is not fixed, the mapping relationship between different spray ink volumes and spray pressure parameters is obtained through experiments, and the spray pressure parameters a1, a2, a3... corresponding to different spray ink volumes are obtained. Among them, the value ranges of a1, a2, a3... are all different but there are some overlapping value ranges or the same value. It should be noted that even if there are overlapping value ranges or the same value, due to different spray ink volumes or other parameters, the obtained spray pressures are also different.

[0038] Through the above formula, when the R corner printing parameters, i.e., the spraying sequence and the number of spraying PASSes, are different, the spraying pressure of the spray gun P1 can be accurately obtained according to the information of each parameter to ensure that the spraying thickness of the R corner is uniform and even. The value of d is first determined according to the number of spraying PASSes and the spraying sequence, and then the arc surface area (spraying area) and arc surface angle (spraying area) of the R corner are determined according to r and β. Finally, the final spraying pressure is obtained according to the mapping relationship and calculation formula between the spraying pressure parameters a and r, β, and d. The spraying pressure is input into the spray gun P1, and the R corner is sprayed and printed, which greatly improves the spraying quality of the R corner and ensures that the ink layer thickness of the R corner meets the printing process requirements; due to the dynamic adjustment of the inkjet pressure, a suitable spraying pressure is found so that the R corner accurately and evenly covers the ink layer and reduces the generation of flying ink, which reduces the waste of ink to another extent, saves resources and is more environmentally friendly.

[0039] In an optional embodiment, the area information and position information of all the surfaces to be printed of the three-dimensional substrate can be obtained first, and the positions of the large surface to be printed and the small surface to be printed can be distinguished by the area information; then the positions of the 12 R angles can be located by the position information of the surface to be printed and the contact relationship between the surfaces to be printed; however, it should be noted that these steps are not necessary but can be distinguished and located in advance by, for example, using a control program pre-stored in a memory, and then the 12 R angles can be spray-printed by the above step S1 and the large surface to be printed and the small surface to be printed can be inkjet-printed by the above step S2 in a pre-set order; and then step S3 can be used to solidify the R angles that have been spray-printed and the surfaces to be printed that have been inkjet-printed. Through the above steps, the R angles are spray-printed, and the spray gun is used to provide high inkjet pressure and a large amount of ink, which solves the problem of too thin or uneven ink layer at the R angle if inkjet printing is used, ensures the uniformity of the ink layer of the entire three-dimensional substrate, and improves the printing quality.

[0040] For example, the above-mentioned step of obtaining the area information of all surfaces to be printed of the three-dimensional substrate may specifically include: a preset area threshold; obtaining a surface to be printed with an area greater than or equal to the preset area threshold as a large surface to be printed, and obtaining a surface to be printed with an area less than the preset area threshold as a small surface to be printed; wherein, the small surface to be printed includes the first surface 1, the third surface 3, the fifth surface 5 and the sixth surface 6, and the large surface to be printed includes the second surface 2 and the fourth surface 4; the first surface 1, the fifth surface 5, the third surface 3 and the sixth surface 6 are connected end to end, the first surface 1 is parallel to the third surface 3, the fifth surface 5 is parallel to the sixth surface 6, and the second surface 2 is parallel to the fourth surface 4.

[0041] In one embodiment, a preset area threshold is used to distinguish and locate the larger surface to be printed and the smaller surface to be printed in the three-dimensional substrate, for example Figure 3In the example, the second side 2 and the fourth side 4 are distinguished as large surfaces to be printed by preset area thresholds, and their position information is obtained; the first side 1, the third side 3, the fifth side 5 and the sixth side 6 are distinguished as small surfaces to be printed, and their positional relationship is obtained. By locating and distinguishing the area and position information of each surface, different printing parameters can be set for different surfaces to be printed during printing to improve printing accuracy; the printing parameters include the printing order and the number of printing passes.

[0042] For another example, the above-mentioned steps of locating a total of 12 R angles may specifically include: determining a first R angle 12 according to the first surface and the second surface; determining a second R angle 25 according to the second surface and the fifth surface; determining a third R angle 32 according to the third surface and the second surface; determining a fourth R angle 26 according to the second surface and the sixth surface; determining a fifth R angle 14 according to the first surface and the fourth surface; determining a sixth R angle 45 according to the fourth surface and the fifth surface; determining a seventh R angle 34 according to the third surface and the fourth surface; determining an eighth R angle 46 according to the fourth surface and the sixth surface; determining a ninth R angle 15 according to the first surface and the fifth surface; determining a tenth R angle 35 according to the third surface and the fifth surface; determining an eleventh R angle 36 according to the third surface and the sixth surface; and determining a twelfth R angle 16 according to the first surface and the sixth surface.

[0043] In another embodiment, Figure 3 As shown, each R angle is named according to the position relationship of the surface to be printed and the contact relationship between the surfaces to be printed. The position of the R angle and the contact relationship between the R angle and the surface to be printed are determined by naming each R angle, so that different printing parameters can be set for different R angles during printing to improve printing accuracy and printing efficiency.

[0044] Practically, the above-mentioned step S1 of spray printing the R angle and step S2 of inkjet printing the surface to be printed can specifically include: first spray printing the first R angle 12, the second R angle 25, the third R angle 32, the fourth R angle 26, the fifth R angle 14, the sixth R angle 45, the seventh R angle 34 and the eighth R angle 46, and then spray printing the ninth R angle 15, the tenth R angle 35, the eleventh R angle 36 and the twelfth R angle 16; after all the R angles are spray-printed, first inkjet printing is performed on the first side 1, the third side 3, the fifth side 5 and the sixth side 6, and then inkjet printing is performed on the second side 2 and the fourth side 4.

[0045] See also Figure 3Preferably, all R angles are spray-printed first and then all surfaces to be printed are inkjet-printed. The purpose of spray-printing first is to use inkjet printing to cover the ink dots that are accidentally sprayed onto the surface to be printed during spray-printing. This can avoid obvious spray ink dots on the surface to be printed and improve the printing quality. First, the eight R angles on the second surface 2 and the fourth surface 4 are spray-printed, and then the four R angles connected end to end on the first surface 1, the fifth surface 5, the third surface 3 and the sixth surface 6 are spray-printed. Through the above-mentioned spraying sequence, it is convenient to find the R angle position, save the spray printing process, reduce the searching process, and improve the spray printing efficiency. In addition, after completing the spray printing of all R angles, inkjet print the small surface to be printed first, and then inkjet print the large surface to be printed. The purpose of the above-mentioned inkjet printing sequence of first printing the small surface to be printed and then printing the large surface to be printed is that since the amount of ink on the small surface to be printed is low, printing the small surface to be printed first can maximize the avoidance of obvious impact of flying ink on the surface of the already printed large surface to be printed. The small surface to be printed has a relatively small cross-section, so the impact of flying ink on it is small and can be ignored.

[0046] In addition, after determining the order of printing the small surface to be printed first and then the large surface to be printed, when single-sided printing is adopted, the large surface to be printed can be first sprayed with the second surface 2 and then the fourth surface 4, or first sprayed with the fourth surface 4 and then the second surface 2, and the inkjet printing order of the small surface to be printed can be: (i) inkjet printing is performed on the first surface 1, the third surface 3, the fifth surface 5 and the sixth surface 6 in sequence; (ii) inkjet printing is performed on the first surface 1, the fifth surface 5, the third surface 3 and the sixth surface 6 in sequence; (iii) inkjet printing is performed on the first surface 1, the sixth surface 6, the third surface 4 and the sixth surface 6 in sequence. After determining the order of printing the small side to be printed first and then the large side to be printed, when double-sided printing is adopted, the inkjet printing order can be: (a) first inkjet print the first side 1 and the third side 3 at the same time, then inkjet print the fifth side 5 and the sixth side 6 at the same time, and finally inkjet print the second side 2 and the fourth side 4 at the same time; (b) first inkjet print the fifth side 5 and the sixth side 6 at the same time, then inkjet print the first side 1 and the third side 3 at the same time, and finally inkjet print the second side 2 and the fourth side 4 at the same time.

[0047] After determining the order of printing the small side to be printed first and then the large side to be printed, when using the three-sided printing method, such as Figure 3 As shown, if there is an electrode on the sixth side 6, special processing is required, and the inkjet printing sequence is: first, inkjet print the first side 1, the fifth side 5 and the third side 3 at the same time, and then inkjet print the second side 2 and the fourth side 4 at the same time.

[0048] The above-mentioned inkjet printing sequence setting can save inkjet printing heads, simplify the equipment structure and reduce equipment costs. Double-sided printing and three-sided printing can also avoid multiple mutual influences of multiple printings, and also reduce the problem of damage to the image on the printed surface that has been inkjet printed due to flipping the power battery.

[0049] In another practicable manner, the above-mentioned step S1 of spray printing the R angle and step S2 of inkjet printing the surface to be printed can specifically include: firstly inkjet printing the first surface 1, the third surface 3, the fifth surface 5 and the sixth surface 6, and then inkjet printing the second surface 2 and the fourth surface 4; after all the surfaces to be printed are completed with inkjet printing, the first R angle 12, the second R angle 25, the third R angle 32, the fourth R angle 26, the fifth R angle 14, the sixth R angle 45, the seventh R angle 34 and the eighth R angle 46 are spray-printed, and then the ninth R angle 15, the tenth R angle 35, the eleventh R angle 36 and the twelfth R angle 16 are spray-printed. Since all the surfaces to be printed are first inkjet printed, and then all the R angles are spray-printed. This arrangement is that after all the surfaces to be printed are inkjet printed, the R angle has a phenomenon of too thin ink. At this time, a supplementary spray is performed on the R angle by spray printing, so that the ink layer thickness at the R angle meets the printing process requirements. This setting requires setting the spraying pressure, ink output, and ink thickness of the spray gun to ensure that the ink layer thickness at the R corner and the ink layer thickness on the surface to be printed are uniform and even.

[0050] Further, the order of first printing the small surface to be printed and then printing the large surface to be printed includes: when a single-sided printing method is adopted, the large surface to be printed can be first sprayed on the second surface 2 and then on the fourth surface 4, or first sprayed on the fourth surface 4 and then on the second surface 2, and the inkjet printing order of the small surface to be printed can be: (i) inkjet printing is performed on the first surface 1, the third surface 3, the fifth surface 5 and the sixth surface 6 in sequence; (ii) inkjet printing is performed on the first surface 1, the fifth surface 5, the third surface 3 and the sixth surface 6 in sequence; (iii) inkjet printing is performed on the first surface 1, the sixth surface 6, the third surface 3 and the fifth surface 5 in sequence;

[0051] When double-sided printing is adopted, the inkjet printing sequence is: (i) firstly inkjet print the first side 1 and the third side 3 at the same time, then inkjet print the fifth side 5 and the sixth side 6 at the same time, and finally inkjet print the second side 2 and the fourth side 4 at the same time; (ii) firstly inkjet print the fifth side 5 and the sixth side 6 at the same time, then inkjet print the first side 1 and the third side 3 at the same time, and finally inkjet print the second side 2 and the fourth side 4 at the same time;

[0052] When using three-sided printing, such as Figure 3 As shown, if there is an electrode on the sixth side 6, special processing is required, and the inkjet printing sequence is: first, inkjet print the first side 1, the fifth side 5 and the third side 3 at the same time, and then inkjet print the second side 2 and the fourth side 4 at the same time.

[0053] The above-mentioned inkjet printing sequence setting can save inkjet printing heads, simplify the equipment structure and reduce equipment costs. Double-sided printing and three-sided printing can also avoid multiple mutual influences of multiple printings, and also reduce the problem of damage to the image on the printed surface that has been inkjet printed due to flipping the power battery.

[0054] Furthermore, the spray printing sequence for the R corners is: first spray printing the eight R corners on the second side 2 and the fourth side 4, and then spray printing the four R corners connected end to end on the first side 1, the third side 3, the fifth side 5, and the sixth side 6. The above spraying sequence can facilitate the search for the R corner position, simplify the spray printing process, reduce the searching process, and improve the spray printing efficiency.

[0055] In another practicable manner, the above-mentioned step S1 of spray printing the R angle and the step S2 of inkjet printing the surface to be printed can specifically include: firstly spray printing the first R angle 12, the ninth R angle 15, the fifth R angle 14 and the twelfth R angle 16, and then inkjet printing the first surface 1; after the first R angle 12, the ninth R angle 15, the fifth R angle 14 and the twelfth R angle 16 are spray-printed and the first surface 1 is inkjet printed, then the third R angle 32, the seventh R angle 34, the tenth R angle 35 and the eleventh R angle 36 are spray-printed, and then the third surface 3 is inkjet printed; the third R angle 32. After the seventh R angle 34, the tenth R angle 35 and the eleventh R angle 36 are spray-printed and the third side 3 is inkjet-printed, the second R angle 25 and the sixth R angle 45 are spray-printed first, and then the fifth side 5 is inkjet-printed; after the second R angle 25 and the sixth R angle 45 are spray-printed and the fifth side 5 is inkjet-printed, the fourth R angle 26 and the eighth R angle 46 are spray-printed first, and then the sixth side 6 is inkjet-printed; after the fourth R angle 26 and the eighth R angle 46 are spray-printed and the sixth side 6 is inkjet-printed, the second side 2 and the sixth side 6 are inkjet-printed.

[0056] In this embodiment, the R angle on one of the surfaces to be printed is spray-printed first, and then the surface to be printed is inkjet-printed. By setting this up, the searching of the surface to be printed and the R angle is minimized, and the printing efficiency is improved; secondly, the R angle is printed first, and the ink dots that are accidentally sprayed on the surface to be printed during the spray printing can also be covered by inkjet printing, so that obvious spray ink dots can be avoided on the surface to be printed, and the printing quality can be improved; and the printing order of the surface to be printed is also to first print the R angles around the small surface to be printed and the small surface to be printed, and then print the large surface to be printed, so that the flying ink generated when printing the small surface to be printed can avoid the obvious influence on the surface of the large surface to be printed that has been printed, and the small surface to be printed has a relatively small cross-section, so the influence of the flying ink on it is small and can be ignored, thereby improving the printing quality.

[0057] In the above-mentioned implementation of spray printing and inkjet printing, a one-pass or multi-pass printing method can be used. For spray printing: the one-pass spray printing method needs to increase the amount of ink and pressure of one spray, because it is necessary to spray once to meet the ink thickness requirement, so the amount of ink needs to be increased, but the increase in ink volume increases the fluidity of the ink, so a larger spraying pressure is required, and at the same time, the printer performance needs to be better and the equipment consumes more energy, but the efficiency of spray printing can be improved; the multi-pass spray printing method uses multiple spraying to achieve the final printing process requirements, and does not require too high an amount of ink and spraying pressure for each pass, so it is more tolerant of the requirements for the performance of the printer, and multiple small sprayings can reduce ink waste and reduce the pollution of other printed surfaces caused by excessive flying ink due to high pressure. For inkjet printing: it is preferred to set the small surface to be printed to use multi-PASS printing, and the large surface to be printed to use single-PASS printing. The purpose of this setting is that multi-PASS printing can reduce the amount of ink per PASS, avoiding the problem that the small surface to be printed is too small and the amount of ink is too high, and there is too much ink at the R corner and it flows away quickly due to gravity, resulting in a thinner ink at the R corner. Similarly, it can also be determined whether the R corner and the surface to be printed should be printed with single-PASS or multi-PASS according to actual conditions.

[0058] Optionally, the operation of curing the surface to be printed in step S3 may adopt the following curing module 30 and specifically include the following methods:

[0059] (i) Use one pre-curing irradiation and one final curing irradiation for curing or drying. Pre-curing is used once after each R-angle spray printing is completed, and pre-curing is used once after each surface to be printed is completed. After completing the printing of all R-angles and all surfaces to be printed, the power battery as a three-dimensional substrate is transported to a location away from the nozzle and irradiated with high-band light for final curing and drying.

[0060] (ii) Use two pre-curing irradiations and one final curing irradiation for curing or drying. Two pre-curings are used after each R corner spray printing is completed, and two pre-curings are used after each surface to be printed is completed. After all R corners and all surfaces to be printed are printed, the power battery is transported to a location away from the nozzle and irradiated with high-band light for final curing and drying.

[0061] The number of pre-curing times for the R corner and the surface to be printed can be determined according to the actual situation. For example, if the amount of ink in the R corner is small, one pre-curing can be used, and if the amount of ink is large, two pre-curing can be used; the number of pre-curing times for the surface to be printed should also be determined according to the actual inkjet situation. The pre-curing uses low-band light irradiation for pre-curing and drying. The wave of the pre-curing light is a single wave, such as a low-power lamp bead in the 395 band, and the final curing wave is a mixed wave, so the curing efficiency is high. After the pre-curing of the R corner and the surface to be printed, the ink can be fixed in advance to limit the flow of ink and prevent the ink from being too fluid due to gravity, resulting in problems such as too thin or uneven ink layer. The final curing is to fix the ink layer on the substrate at one time through high-power lamp beads. After the final curing, a finished power battery with a uniform ink layer is obtained.

[0062] See also Figure 6 Referring to the above description of the three-dimensional substrate printing method with improved R angle, an embodiment of the present invention provides a three-dimensional substrate printing device with improved R angle, the device comprising:

[0063] A spray gun spray printing module 10, which includes a spray gun with a single nozzle and is used for spray printing the R corner;

[0064] An inkjet printing module 20 includes an inkjet head having a plurality of nozzles and performs inkjet printing on a surface to be printed;

[0065] The curing module 30 is used to cure the R corner after spray printing and the surface to be printed after inkjet printing.

[0066] In addition, corresponding to the above description of R angle positioning, the device may further include a to-be-printed surface data acquisition module for acquiring all to-be-printed surface information of the three-dimensional substrate and an R angle acquisition module for determining a plurality of R angles according to the to-be-printed surface information.

[0067] Preferably, the data acquisition module for the surface to be printed includes: a preset module for presetting an area threshold; a surface to be printed acquisition module, which is used to acquire a surface to be printed whose area is greater than or equal to the preset area threshold as a large surface to be printed and a surface to be printed whose area is less than the preset area threshold as a small surface to be printed. The small surface to be printed includes the first surface, the third surface, the fifth surface and the sixth surface, and the large surface to be printed includes the second surface and the fourth surface; the first surface, the fifth surface, the third surface and the sixth surface are connected end to end, the first surface is parallel to the third surface, the fifth surface is parallel to the sixth surface, and the second surface is parallel to the fourth surface.

[0068] Preferably, the R angle acquisition module 20 is used to: determine the first R angle according to the first surface and the second surface; determine the second R angle according to the second surface and the fifth surface; determine the third R angle according to the third surface and the second surface; determine the fourth R angle according to the second surface and the sixth surface; determine the fifth R angle according to the first surface and the fourth surface; determine the sixth R angle according to the fourth surface and the fifth surface; determine the seventh R angle according to the third surface and the fourth surface; determine the eighth R angle according to the fourth surface and the sixth surface; determine the ninth R angle according to the first surface and the fifth surface; determine the tenth R angle according to the third surface and the fifth surface; determine the eleventh R angle according to the third surface and the sixth surface; determine the twelfth R angle according to the first surface and the sixth surface.

[0069] Preferably, Figure 3 As shown, the spray gun spray printing module 10 is used to: first spray print the first R angle, the second R angle, the third R angle, the fourth R angle, the fifth R angle, the sixth R angle, the seventh R angle and the eighth R angle, and then spray print the ninth R angle, the tenth R angle, the eleventh R angle and the twelfth R angle.

[0070] After all R corners are spray-printed, the inkjet head inkjet printing module 20 is used to first perform inkjet printing on the first surface, the third surface, the fifth surface and the sixth surface, and then perform inkjet printing on the second surface and the fourth surface.

[0071] Alternatively, the spray gun spray printing module 10 and the inkjet head inkjet printing module 20 cooperate to complete: first inkjet printing is performed on the first side, the third side, the fifth side and the sixth side, and then inkjet printing is performed on the second side and the fourth side; after all the surfaces to be printed are inkjet printed, the first R corner, the second R corner, the third R corner, the fourth R corner, the fifth R corner, the sixth R corner, the seventh R corner and the eighth R corner are spray printed first, and then the ninth R corner, the tenth R corner, the eleventh R corner and the twelfth R corner are spray printed.

[0072] Alternatively, the spray gun spray printing module 10 and the inkjet head inkjet printing module 20 cooperate to complete: first spray printing the first R angle, the ninth R angle, the fifth R angle and the twelfth R angle, and then inkjet printing the first side; after the first R angle, the ninth R angle, the fifth R angle and the twelfth R angle are sprayed and printed and the first side is inkjet printed, the third R angle, the seventh R angle, the tenth R angle and the eleventh R angle are sprayed and printed first, and then inkjet printing is performed on the third side; the third R angle, the seventh R angle, After the tenth R angle and the eleventh R angle are spray-printed and the third side is inkjet-printed, the second R angle and the sixth R angle are spray-printed first, and then the fifth side is inkjet-printed; after the second R angle and the sixth R angle are spray-printed and the fifth side is inkjet-printed, the fourth R angle and the eighth R angle are spray-printed first, and then the sixth side is inkjet-printed; after the fourth R angle and the eighth R angle are spray-printed and the sixth side is inkjet-printed, the second side and the sixth side are inkjet-printed.

[0073] See also Figure 7 An embodiment of the present invention provides a three-dimensional substrate printing device with improved R angle, including: at least one processor 401, at least one memory 402 and computer program instructions stored in the memory, when the computer program instructions are executed by the processor, the method of the first aspect in the above embodiment is implemented.

[0074] In addition, combined Figure 1 The three-dimensional substrate printing method with improved R angle described in the embodiment of the present invention can be implemented by a three-dimensional substrate printing device with improved R angle. Figure 7 A schematic diagram of the hardware structure of a three-dimensional substrate printing device with improved R angle provided by an embodiment of the present invention is shown.

[0075] The three-dimensional substrate printing device with improved R angle may include a processor and a memory storing computer program instructions.

[0076] Specifically, the processor 401 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiment of the present invention.

[0077] Memory 402 may include a large capacity memory for data or instructions. For example, but not limitation, memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, memory 402 may include a removable or non-removable (or fixed) medium. In appropriate cases, memory 402 may be inside or outside a data processing device. In a specific embodiment, memory 402 is a non-volatile solid-state memory. In a specific embodiment, memory 402 includes a read-only memory (ROM). In appropriate cases, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM) or a flash memory or a combination of two or more of these.

[0078] The processor 401 reads and executes the computer program instructions stored in the memory 402 to implement any one of the three-dimensional substrate printing methods for improving the R angle in the above embodiments.

[0079] In one example, the three-dimensional substrate printing device with improved R angle may further include a communication interface 403 and a bus 410. Figure 7 As shown, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 and communicate with each other.

[0080] The communication interface 403 is mainly used to implement the communication between the modules, devices, units and / or equipment in the embodiment of the present invention.

[0081] Bus 410 includes hardware, software or both, and the components of the three-dimensional substrate printing device that improves R angle are coupled to each other. For example, but not limitation, bus 410 may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front-end bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 410 may include one or more buses. Although the embodiment of the present invention describes and shows a specific bus 410, the present invention considers any suitable bus or interconnection.

[0082] In addition, in combination with the three-dimensional substrate printing method with improved R angle in the above embodiment, the embodiment of the present invention can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the three-dimensional substrate printing methods with improved R angle in the above embodiment is implemented.

[0083] In summary, the three-dimensional substrate printing method, device, equipment and storage medium with improved R angle provided by the embodiments of the present invention solve or make up for the problem of thin or uneven ink layer at R angle caused by inkjet printing with inkjet head by using a spray gun to spray print at R angle; secondly, by determining the order of spraying at R angle and inkjet at the printing surface, the printing process is simplified, the printing nozzle is saved, the searching process is reduced to reduce damage to the completed printing screen, and the printing efficiency is improved. By flexibly setting the spraying pressure of the spray gun, the quality of the sprayed ink layer can be further guaranteed, the quality of spray printing can be improved, and the impact of flying ink can be reduced. By selecting the printing mode of spray printing and inkjet printing as one PASS or multiple PASS, the ink output and pressure can be more flexibly adjusted, the impact of flying ink generated during spray printing or inkjet printing can be reduced, and printers with different performances can be flexibly selected. When the three-dimensional substrate printing method with improved R corner of the present application is used for power batteries as three-dimensional substrates, the thickness of the R corner ink layer of the power battery can be ensured to be uniform and even, which further ensures the uniformity and evenness of the ink layer of the entire power battery, thereby achieving the purpose of the ink layer of the power battery having good anti-friction, insulation and protection of the battery cell.

[0084] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0085] The functional blocks shown in the above block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present invention are programs or code segments that are used to perform the required tasks. Programs or code segments can be stored in machine-readable media, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable media" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0086] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

[0087] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

Claims

1. A three-dimensional substrate printing method with improved R angle, characterized in that: The method comprises: Using a spray gun with a single nozzle to spray print the R corner; Using an inkjet head with multiple nozzles to perform inkjet printing on the surface to be printed; The R corner after spray printing and the surface to be printed after inkjet printing are cured.

2. The three-dimensional substrate printing method with improved R angle according to claim 1, characterized in that: The method of using a spray gun with a single nozzle to spray print the R corner includes: Using a spray gun with a single nozzle to sequentially spray print all the R corners of the three-dimensional substrate until all the R corners are spray printed without interruption; The inkjet printing on the surface to be printed by using an inkjet head having a plurality of nozzles comprises: An inkjet head with multiple nozzles is used to sequentially perform inkjet printing on all the surfaces to be printed on the three-dimensional substrate until the inkjet printing of all the surfaces to be printed is completed without interruption.

3. The three-dimensional substrate printing method with improved R angle according to claim 2, characterized in that: The method of using a spray gun with a single nozzle to spray print the R corner includes: After all the surfaces to be printed are inkjet printed without interruption, a spray gun with a single nozzle is used to sequentially spray print all the R corners of the three-dimensional substrate until all the R corners are spray printed without interruption.

4. The three-dimensional substrate printing method with improved R angle according to claim 2, characterized in that: The inkjet printing on the surface to be printed by using an inkjet head having a plurality of nozzles comprises: After all the R-angle spray printing is completed without interruption, an inkjet head with multiple nozzles is used to sequentially perform inkjet printing on all the to-be-printed surfaces of the three-dimensional substrate until all the to-be-printed surfaces are completed without interruption.

5. The three-dimensional substrate printing method with improved R angle according to claim 1, characterized in that: The method of using a spray gun with a single nozzle to spray print the R corner includes: While a spray gun with a single nozzle is used to spray print the R corner, an inkjet head with multiple nozzles is alternately used to inkjet print the surface to be printed.

6. The three-dimensional substrate printing method with improved R angle according to claim 5, characterized in that: During the process of using a spray gun with a single nozzle to spray print the R corner, alternately using an inkjet head with multiple nozzles to inkjet print the surface to be printed includes: For each surface of the three-dimensional substrate, a spray gun with a single nozzle is first used to spray print the R corner, and then an inkjet head with multiple nozzles is used to inkjet print the surface to be printed, and the printing of each surface is completed alternately in this way.

7. The three-dimensional substrate printing method with improved R angle according to claim 1, characterized in that: The spray printing of the R angle comprises: Acquire the R angle parameter information, the spray gun parameter information, and the vertical distance between the spray gun nozzle and the R angle vertex; Obtaining a spraying pressure parameter of the spraying gun according to the R angle parameter information, the spray gun parameter information, and a vertical distance between the spray gun nozzle and the R angle vertex; The spray gun is controlled according to the spray pressure parameter to spray and print the R corner.

8. A three-dimensional substrate printing device with improved R angle, characterized in that: The device comprises: A spray gun spray printing module, which includes a spray gun with a single nozzle and is used for spray printing the R corner; An inkjet printing module includes an inkjet head having a plurality of nozzles and performs inkjet printing on a surface to be printed; The curing module is used to cure the R corner after spray printing and the surface to be printed after inkjet printing.

9. A three-dimensional substrate printing device with improved R angle, characterized in that: include: At least one processor, at least one memory and computer program instructions stored in the memory, when the computer program instructions are executed by the processor, implement the method according to any one of claims 1 to 7.

10. A storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method according to any one of claims 1 to 7 is implemented.

Images