Printhead tiling device for a printing system, printing system
By combining an image sensor and a precision adjustment device, high-precision adjustment of the printhead position is achieved, solving the problem of inaccurate printhead splicing and realizing high-quality wide-format printing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JETLIFE TECHNOLOGY (HANGZHOU) CO LTD
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-04
AI Technical Summary
Existing technologies suffer from inaccurate printhead splicing, cumbersome operation, and long processing time, resulting in poor printing quality and issues such as white seams, depressions, stepped gaps, or overlapping stripes.
The nozzle position is acquired by an imager and adjusted by a precision adjustment device, including a horizontal adjustment component and a nozzle position adjustment component, to achieve high-precision physical splicing of the nozzles, ensuring that the nozzle orifice array direction is parallel to the X-axis of the imager and the orifice spacing error is ≤5μm.
It achieves high-precision splicing of printheads, meets the needs of wide-format, high-quality printing, and the printhead assembly can be directly installed on the equipment for use. The printing effect is continuous and uniform, and the nozzle spacing error is ≤10μm.
Smart Images
Figure CN224588794U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of inkjet printing technology, and in particular to a printhead splicing device and a printing system for a printing system. Background Technology
[0002] In printing systems, the nozzle area of a single printhead is limited. For example, the physical printing width of the Ricoh G5 printhead is only 54.1337 mm. To expand the physical printing area, multiple printheads are commonly used in scanning and one-pass printing systems.
[0003] The traditional method of printhead splicing is to install a printhead setting adjustment mechanism, which allows the printhead to move back and forth along the direction of the nozzle array, thereby achieving the end-to-end connection of the nozzles of two printheads. Furthermore, the splicing accuracy is judged by the actual printing effect.
[0004] Judging the splicing effect solely by the actual print quality has significant drawbacks, as its accuracy is often low. When the spacing between adjacent nozzles at the splicing point is too large, white seams or indentations will appear in the actual print; if the spacing between adjacent nozzles is too small, stepped gaps or overlapping stripes will appear in the actual print. Therefore, it is necessary to adjust the printing parameters to further optimize the splicing effect. Utility Model Content
[0005] In view of this, the present disclosure provides a printhead splicing device and a printing system for a printing system, which at least partially solves the problems of inaccurate printhead splicing, cumbersome operation, and long time consumption in the prior art.
[0006] In a first aspect, embodiments of this disclosure provide a printhead splicing device for a printing system, comprising: Imaging equipment; A precision adjustment device is placed on the platform of the imager; the precision adjustment device includes a base assembly, a nozzle adjustment assembly, and a horizontal adjustment assembly installed between the base assembly and the nozzle adjustment assembly, the horizontal adjustment assembly being used to adjust the overall levelness of the nozzle adjustment assembly; The nozzle adjustment assembly includes a nozzle support plate and several sets of nozzle position adjustment components installed on the side of the nozzle support plate. The nozzle support plate has a reference nozzle mounting area and several nozzle mounting areas to be adjusted, and the several sets of nozzle position adjustment components correspond to several nozzle mounting areas to be adjusted. Each of the nozzle position adjustment components includes a first direction movement adjustment component and a second direction movement adjustment component, with the first direction being perpendicular to the second direction. The first direction, the longitudinal axis of the reference nozzle mounting area, and the longitudinal axis of the nozzle mounting area to be adjusted are parallel to the X-direction of the imager.
[0007] Secondly, this application discloses a printhead splicing device for a printing system, comprising: Base assembly; A horizontal adjustment component installed above the base assembly is used to adjust the overall levelness of the nozzle support assembly. The nozzle adjustment assembly includes a nozzle support plate and several sets of nozzle position adjustment assemblies installed on the side of the nozzle support plate. The nozzle support plate has a reference nozzle mounting area and several nozzle mounting areas to be adjusted, and the several sets of nozzle position adjustment assemblies correspond to several nozzle mounting areas to be adjusted. Each nozzle position adjustment assembly includes a first direction movement adjustment component and a second direction movement adjustment component, with the first direction being perpendicular to the second direction. The first direction, the longitudinal axis of the reference nozzle mounting area, and the longitudinal axis of the nozzle mounting area to be adjusted are consistent.
[0008] Thirdly, this application discloses a printing system, including a printing device and a printhead assembly installed on the printing device; The printhead assembly is a printhead adjustment assembly in which all printhead positions are adjusted using the printhead splicing device for the printing system.
[0009] The printhead splicing device for a printing system provided in this embodiment uses an image sensor to collect the printhead position and the position of the target nozzle on the printhead to determine whether the splicing is in place. At the same time, a precision adjustment device placed on the image sensor platform is used, wherein the horizontal adjustment component adjusts the overall horizontality of the printhead adjustment component, and the first direction movement adjustment component and the second direction movement adjustment component of the printhead position adjustment component precisely adjust the printhead position, thereby achieving the physical position requirements for high-precision physical splicing of multiple printheads, realizing precise printhead splicing, and allowing the spliced printhead assembly to be directly installed on the equipment for use, meeting the needs of wide-format, high-quality printing.
[0010] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a perspective view of a first embodiment of the printhead splicing device for a printing system provided in this application.
[0013] Figure 2 for Figure 1 A three-dimensional schematic diagram of the precision adjustment device in the middle.
[0014] Figure 3 for Figure 2 A three-dimensional schematic diagram of the base component.
[0015] Figure 4 for Figure 2 A three-dimensional schematic diagram of the first straight rod assembly.
[0016] Figure 5 for Figure 2 A three-dimensional schematic diagram of the nozzle adjustment assembly.
[0017] Figure 6 A schematic diagram showing the locations of all nozzles provided in this application.
[0018] Explanation of reference numerals in the attached figures: 100. Precision adjustment device; 110. Base assembly; 111. Base plate; 112. First set of movable suction cup assembly; 1121. Mounting plate; 1122. Negative pressure suction cup; 113. Second set of movable suction cup assembly; 114. Yaw adjustment assembly; 1141. Yaw adjustment plate; 1142. First micrometer head assembly; 1143. Second micrometer head assembly; 121. First straight rod assembly; 1211. Top connecting plate; 1212. Spherical bearing seat; 1213. Adjusting screw; 1214. Locking nut; 122. Second straight rod assembly; 123. Third straight rod assembly; 13 0. Nozzle adjustment assembly; 131. Nozzle support plate; 132. First nozzle position adjustment assembly; 1321. First X-axis micrometer head; 1322. First Y-axis micrometer head; 133. Second nozzle position adjustment assembly; 1331. Second X-axis micrometer head; 1332. Second Y-axis micrometer head; 134. Third nozzle position adjustment assembly; 1341. Third X-axis micrometer head; 1342. Third Y-axis micrometer head; 200. Image sensor; 310. Reference nozzle; 311. First row of nozzles; 320. First nozzle to be adjusted; 330. Second nozzle to be adjusted; 340. Third nozzle to be adjusted. Detailed Implementation
[0019] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.
[0020] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.
[0021] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.
[0022] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.
[0023] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.
[0024] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.
[0025] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values that would be recognized by one of ordinary skill in the art.
[0026] Reference Figure 1 and Figure 2 This application discloses a printhead splicing device for a printing system, used to achieve high-precision physical splicing of multiple printheads. This ensures accurate printhead splicing, and the spliced printhead assembly can be directly installed on the equipment for use, meeting the requirements for wide-format, high-quality printing. Specifically, the device includes an image sensor 200 and a precision adjustment device 100 placed on the platform of the image sensor 200. The image sensor 200 is used to acquire the printhead position and the position of the target nozzles on the printheads. The lens of the image sensor 200 can move along the X, Y, and Z directions. By measuring the position and distance of the printhead nozzles, it can determine whether the splicing is in place, with a measurement accuracy ≤3μm. In this application, the image sensor 200 measures the actual position of the printhead nozzles, and then the precision adjustment device 100 adjusts the physical position of the printheads to achieve the required splicing position.
[0027] The precision adjustment device 100 includes a base assembly 110, a nozzle adjustment assembly 130, and a horizontal adjustment assembly installed between the base assembly 110 and the nozzle adjustment assembly 130. The horizontal adjustment assembly is used to adjust the overall levelness of the nozzle adjustment assembly 130, thereby achieving adjustment of the nozzle.
[0028] The nozzle adjustment assembly 130 includes a nozzle support plate 131 and several sets of nozzle position adjustment assemblies installed on the side of the nozzle support plate 131. The nozzle support plate 131 has a reference nozzle 310 mounting area and several nozzle mounting areas to be adjusted, and the several sets of nozzle position adjustment assemblies correspond to several nozzle mounting areas to be adjusted.
[0029] Each nozzle position adjustment assembly includes a first direction movement adjustment component and a second direction movement adjustment component, with the first direction being perpendicular to the second direction. The first direction, the longitudinal axis of the mounting area of the reference nozzle 310, and the longitudinal axis of the mounting area of the nozzle to be adjusted are parallel to the X-direction of the image instrument 200.
[0030] The horizontal adjustment assembly includes a first straight rod assembly 121, a second straight rod assembly 122, and a third straight rod assembly 123 arranged in parallel. The first straight rod assembly 121 is installed between the mounting plate 1121 and the nozzle support plate 131; the second straight rod assembly 122 and the third straight rod assembly 123 are both installed between the sway adjustment plate 1141 and the nozzle support plate 131. This horizontal adjustment assembly uses the principle of three points determining a plane, and adjusts the height of the three support points to achieve overall horizontal adjustment of the nozzle adjustment assembly 130.
[0031] Reference Figure 3 The base assembly 110 includes a base plate 111, a movable suction cup assembly, and a tilt adjustment assembly 114; the movable suction cup assembly includes an air source assembly, a mounting plate 1121 placed on top of the base plate 111, and a negative pressure suction cup 1122 placed on top of the mounting plate 1121, the negative pressure suction cup 1122 being fixed to the mounting plate 1121 by its own threads.
[0032] Furthermore, two negative pressure suction cups 1122 are preferably provided at intervals on the mounting plate 1121 to ensure the fixing strength between the substrate 111 and the platform. Under the action of the negative pressure source, the substrate 111 can be firmly adsorbed in a fixed position.
[0033] A first through hole is formed on the substrate 111, and a second through hole matching the first through hole is formed on the mounting plate 1121. A negative pressure suction cup 1122 is matched with the second through hole. Under the negative pressure of the air source component, the negative pressure suction cup 1122 fixes the substrate 111 on the platform of the image device 200. The suction cup assembly achieves convenient, fast, stable and reliable fixation. Since no additional processing is required on the bottom of the substrate 111, the absolute parallelism between the substrate 111 and the platform of the image device 200 is effectively guaranteed, thereby ensuring the levelness of the substrate 111.
[0034] The yaw adjustment assembly 114 includes a yaw adjustment plate 1141 placed on top of the substrate 111 and a first micro-head assembly 1142 and a second micro-head assembly 1143 located on both sides of the yaw adjustment plate 1141. The yaw adjustment plate 1141 has a degree of freedom of movement under the action of the first micro-head assembly 1142 and the second micro-head assembly 1143, and drives the nozzle adjustment assembly 130 to yaw through the horizontal adjustment assembly.
[0035] Specifically, when it is necessary to adjust the horizontal plane of the nozzle support plate 131 clockwise, the microhead in the first microhead assembly 1142 is controlled to move outward, and the microhead in the second microhead assembly 1143 is controlled to move inward, pushing the tilt adjustment plate 1141 closer to the first microhead assembly 1142, so as to drive the nozzle adjustment assembly 130 to rotate clockwise as a whole through the horizontal adjustment assembly, with the rotation center being the bearing and screw joint in the first straight rod assembly 121.
[0036] When it is necessary to adjust the nozzle support plate 131 to tilt counterclockwise in the horizontal plane, the microhead in the first microhead assembly 1142 is controlled to move inward, and the microhead in the second microhead assembly 1143 is controlled to move outward, pushing the tilt adjustment plate 1141 closer to the second microhead assembly 1143, so as to drive the nozzle adjustment assembly 130 to rotate counterclockwise as a whole through the horizontal adjustment assembly, with the rotation center being the bearing and screw joint in the first straight rod assembly 121.
[0037] In this application, the resolution of the microheads in the first microhead assembly 1142 and the second microhead assembly 1143 is 1μm. By pushing the microhead against the yaw adjustment plate 1141, the yaw can be precisely adjusted. After adjusting to the ideal position, it is tightened with screws. The purpose of the yaw adjustment is to make the nozzle array direction parallel to the X-axis of the imager 200, otherwise the splicing error will increase.
[0038] There are two sets of movable suction cup components: the first set of movable suction cup components 112 and the second set of movable suction cup components 113.
[0039] The first set of movable suction cup assemblies 112 and the second set of movable suction cup assemblies 113 are arranged along the longitudinal axis of the substrate 111; the first straight rod assembly 121 is mounted on the first set of movable suction cup assemblies 112.
[0040] The first set of movable suction cup assemblies 112 and the second set of movable suction cup assemblies 113 are arranged in parallel, and the distance between the first set of movable suction cup assemblies 112 and the second set of movable suction cup assemblies 113 is greater than half the longitudinal length of the substrate 111.
[0041] Reference Figure 4The first straight rod assembly 121 includes a top connecting plate 1211 fixedly connected to the bottom of the nozzle support plate 131, a spherical bearing seat 1212 fixedly mounted on the top connecting plate 1211, an adjusting screw 1213 installed in the spherical bearing seat 1212, and a locking nut 1214 sleeved on the adjusting screw 1213. The adjusting screw 1213 is assembled with the spherical bearing with a small clearance fit and is axially locked and fixed to the spherical bearing by a locking buckle.
[0042] The mounting plate 1121 has a first countersunk threaded hole that matches the adjusting screw 1213; the second straight rod assembly 122 and the third straight rod assembly 123 have the same structure as the first straight rod assembly 121; the yaw adjustment plate 1141 has a second countersunk threaded hole and a third countersunk threaded hole that match the adjusting screw 1213 in the second straight rod assembly 122 and the adjusting screw 1213 in the third straight rod assembly 123.
[0043] The fulcrum height can be changed by rotating the adjusting screw 1213 left and right, thereby adjusting the level of the connected components. After leveling, the adjusting screw 1213 is locked with a nut. Leveling is necessary; if the nozzle is tilted, the nozzle distance measured by the image sensor 200 will be less than the actual nozzle distance, and the splicing error will increase.
[0044] In this application, high-precision physical splicing of multiple printheads involves the rational layout and precise assembly of multiple printheads, ensuring their close physical fit to achieve larger format and higher precision output. The splicing process requires minimal positional error between each group of printheads, ensuring their printing areas connect to form the desired width. Inaccurate splicing will result in white seams or depressions in the actual print, especially if the spacing between adjacent nozzles at the splicing point is too large. Conversely, if the spacing between adjacent printheads at the splicing point is too small, step-like gaps or overlapping stripes will appear, affecting the uniformity of the entire print area. Therefore, the corresponding printhead positions must be adjusted to ensure seamless connection of the ejected materials (such as ink or paint), forming a continuous, uniform, and high-precision pattern or coating. The printhead splicing device provided in this application enables precise and rapid adjustment of each printhead position to meet the needs of preset print widths.
[0045] When the preset printing width is three sets of nozzle holes, there are two nozzle installation areas to be adjusted. Both nozzle installation areas are located on one side of the reference nozzle 310 installation area, and are used to install the first nozzle to be adjusted and the second nozzle to be adjusted, respectively. The longitudinal center axis of the two nozzle installation areas is consistent.
[0046] Under the adjustment action of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row tail nozzle of the first nozzle to be adjusted and the center of the first row nozzle 311 head nozzle of the reference nozzle 310 is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm.
[0047] Under the adjustment action of the corresponding second-direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, and the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, are not greater than the sum of the preset Y-direction moving distance and 5μm.
[0048] Under the adjustment of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row of the second nozzle to be adjusted and the center of the first row of the reference nozzle 310 is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm.
[0049] Under the adjustment of the corresponding second direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, and the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, are not greater than the sum of the preset Y-direction moving distance and 5μm.
[0050] Reference Figure 5 and Figure 6 When the preset printing width is four sets of nozzle holes, there are three nozzle installation areas to be adjusted. Two nozzle installation areas to be adjusted are set on the longitudinal side of the reference nozzle 310 installation area and the longitudinal center axis is consistent. They are used to install the first nozzle to be adjusted and the second nozzle to be adjusted, respectively.
[0051] The third nozzle installation area is located on one side of the reference nozzle 310 installation area and is used to install the third nozzle. The longitudinal center axis of the third nozzle installation area is consistent with the longitudinal center axis of the reference nozzle 310 installation area.
[0052] The first direction movement adjustment component in the first nozzle position adjustment assembly 132 corresponding to the first nozzle to be adjusted 320 is a first X-axis differential head 1321, and the first direction movement adjustment component is a first Y-axis differential head 1322; the first direction movement adjustment component in the second nozzle position adjustment assembly 133 corresponding to the second nozzle to be adjusted 330 is a second X-axis differential head 1331, and the second direction movement adjustment component is a second Y-axis differential head 1332; the first direction movement adjustment component in the third nozzle position adjustment assembly 134 corresponding to the third nozzle to be adjusted 340 is a third X-axis differential head 1341, and the second direction movement adjustment component is a third Y-axis differential head 1342.
[0053] Under the adjustment of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row tail nozzle of the first nozzle to be adjusted and the center of the first row head nozzle of the reference nozzle 310 is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm.
[0054] Under the adjustment action of the corresponding second-direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, and the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, are not greater than the sum of the preset Y-direction moving distance and 5μm.
[0055] Under the adjustment of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row of the second nozzle to be adjusted and the center of the first row of the reference nozzle 310 is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm.
[0056] Under the adjustment of the corresponding second direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, and the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle 310, are not greater than the sum of the preset Y-direction moving distance and 5μm.
[0057] Under the adjustment of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row of the nozzle to be adjusted and the center of the first row of the nozzle to be adjusted of the third nozzle to be adjusted is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm.
[0058] Under the adjustment of the corresponding second-direction moving adjustment component, the Y-direction distance between the center of the first row of the nozzle to be adjusted of the third nozzle to be adjusted and the center of the first row of the nozzle to be adjusted of the second nozzle to be adjusted, and the Y-direction distance between the center of the first row of the nozzle to be adjusted and the center of the first row of the nozzle to be adjusted of the second nozzle to be adjusted, are not greater than the sum of the preset Y-direction moving distance and 5μm.
[0059] In this embodiment, the reference nozzle 310 is positioned and fixed to the nozzle mounting plate 1121 by its own pins and screws.
[0060] For the nozzle to be adjusted, the pin holes on the nozzle mounting plate 1121 are designed accordingly to meet the requirements of position adjustment and accuracy, because the front-to-back displacement and left-to-right sway adjustment are performed. The principle of adjusting the front-to-back displacement and left-to-right sway of the nozzle is to adjust the position by setting a micrometer head on one side to push the nozzle, and setting a spring on the other side to adjust in the opposite direction.
[0061] The method of using this nozzle splicing device is as follows: 1) Place the precision adjustment device on the glass platform of the imager, with the nozzle array direction corresponding to the X-axis of the imager; 2) Manually adjust the initial position of the precision adjustment device so that the nozzle array direction of the reference nozzle is basically consistent with the X-axis of the imager, with an angle ≤3 degrees; 3) Connect the negative pressure suction cup to the negative pressure source through the air pipe to firmly attach the precision adjustment device to the platform; 4) Use the corresponding micrometer head to make precise adjustment of the yaw, so that the nozzle array direction is parallel to the X-axis, and the Y-axis distance between the first and last nozzles in a row is ≤5μm. 5) Adjust the horizontal state of the reference nozzle using the horizontal adjustment component. The distance between the center of the first and last nozzles in a row can be used to determine the horizontal state. The deviation between the measured distance and the theoretical distance should be ≤5μm. 6) Using the reference nozzle orifice as a reference, adjust the position of the second, third, and fourth nozzles to be adjusted using the corresponding micrometer head to ensure that the nozzles of the two nozzles are connected end to end according to the nozzle spacing. The spacing error should be ≤5μm. 7) After adjusting the position, tighten the nozzle with screws. During the tightening process, the nozzle distance needs to be measured repeatedly to ensure that the position has not changed.
[0062] Furthermore, the image sensor 200 used in this printhead splicing device is a standard product with a measurement accuracy of ≤3μm. In summary, the final printhead splicing accuracy is ≤10μm, which meets the requirements for high-quality, uniform printing.
[0063] Secondly, this application discloses a printhead splicing device for a printing system, comprising: Base assembly; A horizontal adjustment assembly installed above the base assembly; The nozzle adjustment assembly includes a nozzle support plate and several sets of nozzle position adjustment components installed on the side of the nozzle support plate. The nozzle support plate has a reference nozzle mounting area and several nozzle mounting areas to be adjusted, and the several sets of nozzle position adjustment components correspond to several nozzle mounting areas to be adjusted. Each nozzle position adjustment assembly includes a first direction movement adjustment component and a second direction movement adjustment component, with the first direction being perpendicular to the second direction. The first direction, the longitudinal axis of the reference nozzle mounting area, and the longitudinal axis of the nozzle mounting area to be adjusted are parallel to the X-direction of the imager.
[0064] Furthermore, it also includes an imager and a negative pressure source, with the base assembly placed on the platform of the imager.
[0065] The base assembly includes a base plate, a movable suction cup assembly, and a tilt adjustment assembly. The movable suction cup assembly includes an air source assembly, a mounting plate placed on top of the base plate, and a negative pressure suction cup placed on top of the mounting plate. A first through hole is formed on the base plate, and a second through hole matching the first through hole is formed on the mounting plate. The negative pressure suction cup is matched with the second through hole, and the negative pressure suction cup fixes the base plate to the platform of the imaging device under the negative pressure of the air source assembly. The tilt adjustment assembly includes a tilt adjustment plate placed on top of the base plate and a first micro-head assembly and a second micro-head assembly located on both sides of the tilt adjustment plate. The tilt adjustment plate has a degree of freedom of movement under the action of the first micro-head assembly and the second micro-head assembly, and tilts the nozzle adjustment assembly through the horizontal adjustment assembly.
[0066] The specific structure of the printhead splicing device for a printing system disclosed in the second aspect of this application is detailed in the scheme of the printhead splicing device for a printing system disclosed in the first aspect of this application. The corresponding components are set in the same way, so they will not be described in detail here.
[0067] Thirdly, this application discloses a printing system, including a printing device and a printhead assembly installed on the printing device; The printhead assembly is a printhead adjustment assembly in which all printhead positions are adjusted using the printhead splicing device for the printing system.
[0068] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.
[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0070] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.
Claims
1. A printhead splicing device for a printing system, characterized in that, include: Imaging equipment; A precision adjustment device is placed on the platform of the imager; the precision adjustment device includes a base assembly, a nozzle adjustment assembly, and a horizontal adjustment assembly installed between the base assembly and the nozzle adjustment assembly, the horizontal adjustment assembly being used to adjust the overall levelness of the nozzle adjustment assembly; The nozzle adjustment assembly includes a nozzle support plate and several sets of nozzle position adjustment components installed on the side of the nozzle support plate. The nozzle support plate has a reference nozzle mounting area and several nozzle mounting areas to be adjusted, and the several sets of nozzle position adjustment components correspond to several nozzle mounting areas to be adjusted. Each of the nozzle position adjustment components includes a first direction movement adjustment component and a second direction movement adjustment component, with the first direction being perpendicular to the second direction. The first direction, the longitudinal axis of the reference nozzle mounting area, and the longitudinal axis of the nozzle mounting area to be adjusted are parallel to the X-direction of the imager.
2. The printhead splicing device for a printing system according to claim 1, characterized in that, The base assembly includes a base plate, a movable suction cup assembly, and a tilt adjustment assembly; The movable suction cup assembly includes an air source assembly, a mounting plate placed on top of the substrate, and a negative pressure suction cup placed on top of the mounting plate. A first through hole is formed on the substrate, and a second through hole matching the first through hole is formed on the mounting plate. The negative pressure suction cup is matched with the second through hole. Under the negative pressure of the air source assembly, the negative pressure suction cup fixes the substrate to the platform of the imaging device. The yaw adjustment assembly includes a yaw adjustment plate placed on top of the substrate and a first micro-head assembly and a second micro-head assembly located on both sides of the yaw adjustment plate. The yaw adjustment plate has a degree of freedom of movement under the action of the first micro-head assembly and the second micro-head assembly, and drives the nozzle adjustment assembly to yaw through the horizontal adjustment assembly.
3. The printhead splicing device for a printing system according to claim 2, characterized in that, The horizontal adjustment assembly includes a first straight rod assembly, a second straight rod assembly, and a third straight rod assembly arranged in parallel. The first straight rod assembly is installed between the mounting plate and the nozzle support plate; the second straight rod assembly and the third straight rod assembly are both installed between the sway adjustment plate and the nozzle support plate.
4. The printhead splicing device for a printing system according to claim 3, characterized in that, The first straight rod assembly includes a top connecting plate fixedly connected to the bottom of the nozzle support plate, a spherical bearing seat mounted on the top connecting plate, an adjusting screw mounted on the spherical bearing seat, and a locking nut sleeved on the adjusting screw; The mounting plate is provided with a first countersunk threaded hole that matches the adjusting screw. The second straight rod assembly and the third straight rod assembly have the same structure as the first straight rod assembly; The yaw adjustment plate is provided with a second countersunk threaded hole and a third countersunk threaded hole that match the adjustment screw in the second straight rod assembly and the adjustment screw in the third straight rod assembly.
5. The printhead splicing device for a printing system according to claim 4, characterized in that, The movable suction cup assembly is provided in two sets, namely the first set of movable suction cup assembly and the second set of movable suction cup assembly; The first set of movable suction cup assemblies and the second set of movable suction cup assemblies are arranged along the longitudinal axis of the substrate; The first straight rod assembly is mounted on the first set of movable suction cup assemblies.
6. The printhead splicing device for a printing system according to claim 5, characterized in that, There are two nozzle installation areas to be adjusted. Both nozzle installation areas to be adjusted are located on one side of the reference nozzle installation area and are used to install the first nozzle to be adjusted and the second nozzle to be adjusted, respectively. The longitudinal center axes of the two nozzle installation areas to be adjusted are consistent. Under the adjustment action of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row tail nozzle of the first nozzle to be adjusted and the center of the first row head nozzle of the reference nozzle is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm. Under the adjustment of the corresponding second direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, and the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, are not greater than the sum of the preset Y-direction moving distance and 5μm. Under the adjustment of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row of the nozzle to be adjusted and the center of the first row of the reference nozzle is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm. Under the adjustment of the corresponding second direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, and the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, are both not greater than the sum of the preset Y-direction moving distance and 5μm.
7. The printhead splicing device for a printing system according to claim 5, characterized in that, There are three nozzle installation areas to be adjusted. Two of the nozzle installation areas to be adjusted are located on one longitudinal side of the reference nozzle installation area and have the same longitudinal center axis. They are used to install the first nozzle to be adjusted and the second nozzle to be adjusted, respectively. The third nozzle installation area to be adjusted is located on one side of the reference nozzle installation area and is used to install the third nozzle to be adjusted. The longitudinal center axis of the third nozzle installation area to be adjusted is consistent with the longitudinal center axis of the reference nozzle installation area.
8. The printhead splicing device for a printing system according to claim 7, characterized in that, Under the adjustment action of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row tail nozzle of the first nozzle to be adjusted and the center of the first row head nozzle of the reference nozzle is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm. Under the adjustment of the corresponding second direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, and the Y-direction distance between the center of the first row of nozzles of the first nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, are not greater than the sum of the preset Y-direction moving distance and 5μm. Under the adjustment of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row of the nozzle to be adjusted and the center of the first row of the reference nozzle is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm. Under the adjustment of the corresponding second direction moving adjustment component, the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, and the Y-direction distance between the center of the first row of nozzles of the second nozzle to be adjusted and the center of the first row of nozzles of the reference nozzle, are not greater than the sum of the preset Y-direction moving distance and 5μm. Under the adjustment action of the corresponding first direction moving adjustment component, the X-direction distance between the center of the first row of the third nozzle to be adjusted and the center of the first row of the second nozzle to be adjusted is not greater than the sum of the center distance between two adjacent nozzles in the X-direction and 5μm. Under the adjustment of the corresponding second-direction moving adjustment component, the Y-direction distance between the center of the first row of the nozzle to be adjusted of the third nozzle to be adjusted and the center of the first row of the nozzle to be adjusted of the second nozzle to be adjusted, and the Y-direction distance between the center of the first row of the nozzle to be adjusted of the third nozzle to be adjusted and the center of the first row of the nozzle to be adjusted of the second nozzle to be adjusted, are both not greater than the sum of the preset Y-direction moving distance and 5μm.
9. A printhead splicing device for a printing system, characterized in that, include: Base assembly; A horizontal adjustment assembly installed above the base assembly; The nozzle adjustment assembly includes a nozzle support plate and several sets of nozzle position adjustment assemblies installed on the side of the nozzle support plate. The nozzle support plate has a reference nozzle mounting area and several nozzle mounting areas to be adjusted, and the several sets of nozzle position adjustment assemblies correspond to several nozzle mounting areas to be adjusted. Each nozzle position adjustment assembly includes a first direction movement adjustment component and a second direction movement adjustment component, with the first direction being perpendicular to the second direction. The first direction, the longitudinal axis of the reference nozzle mounting area, and the longitudinal axis of the nozzle mounting area to be adjusted are consistent.
10. A printing system, characterized in that, Includes a printing device and a printhead assembly installed on the printing device; The printhead assembly is a printhead adjustment assembly with all printhead positions adjusted using the printhead splicing device for a printing system according to any one of claims 1-8 or the printhead splicing device for a printing system according to claim 9.