Ink jet assembly and UV printing equipment
By setting up connections at different ink outlet heights in the secondary ink cartridges that match the printhead height difference, the problem of inconsistent ink pressure when the printhead is tilted is solved, achieving high-quality printing results.
Patent Information
- Application Number
- CN202520278499.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-20
AI Technical Summary
When the printheads are arranged at an angle, existing technology cannot accurately control the ink pressure of printheads at different heights to be consistent, resulting in poor printing quality.
By setting ink outlets at different heights in the secondary ink cartridge and ensuring they match the height difference of the corresponding printheads, and by using pipeline connections to ensure consistent ink pressure, precise control of printheads at different heights can be achieved.
This design ensures consistent ink pressure across all printheads when they are arranged at an angle, thus improving print quality.
Smart Images
Figure CN223672108U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to inkjet printing technical field especially, it is a kind of inkjet assembly and UV printing equipment. BACKGROUND
[0002] UV printing equipment is a kind of digital printing equipment using ultraviolet curing technology, is widely used in advertising, packaging, decoration, electronics, handicrafts and other multiple fields.The core principle is to irradiate by UV lamp, makes UV ink rapidly solidifies on printing medium, to realize high-quality printing effect.The core components of UV printing equipment include nozzle, UV light source, ink path system and control system.Nozzle is responsible for the UV ink with the form of small ink drops accurate injection to the surface of printing material;UV light source emits specific wavelength ultraviolet, irradiates ink drop and makes it occur photopolymerization, solidifies in very short time;Ink path system ensures the stable supply and circulation of ink;Control system is responsible for coordinating the work of each component, realizes accurate pattern output.
[0003] The nozzle arrangement of UV printing equipment is usually arranged horizontally, but horizontal arrangement has the problem of large space occupation.To save space, the nozzle arrangement in the related art has inclined arrangement, but when inclined arrangement, there is height difference between multiple rows of printing nozzles of the same color, and multiple rows of nozzles of the same color use one secondary ink cartridge for ink supply, one secondary ink cartridge as a whole can only control the ink outlet pressure and temperature of the secondary ink cartridge as a whole, and cannot fine-tune the pressure of the secondary ink cartridge output to printing nozzles at different heights, so that the ink outlet pressure of printing nozzles at different heights cannot be accurately controlled.
[0004] Therefore, how to provide a new inkjet assembly, when the nozzle arrangement is arranged obliquely, the ink outlet pressure of printing nozzles at different heights can be accurately controlled by one secondary ink cartridge, so as to realize high-quality printing effect, is a technical problem to be solved by those skilled in the art. UTILITY MODEL CONTENT
[0005] The utility model aims at providing an inkjet assembly, when the nozzle arrangement is arranged obliquely, two ink outlets with different heights of one secondary ink cartridge are connected with printing nozzles at different heights, so as to accurately control the ink outlet pressure of nozzles at different heights, and realize high-quality printing effect.
[0006] To solve the above technical problems, the utility model provides the following technical scheme:
[0007] An inkjet assembly comprises an ink supply unit and a printing unit, the printing unit comprising a printhead tray and a plurality of printing printheads mounted thereon, the printhead tray being provided with at least two printing printheads of the same color at different heights, the ink supply unit comprising at least one secondary ink cartridge, the secondary ink cartridge being provided with at least two ink outlets of the same color at different heights and having the same ink outlet pressure;
[0008] The two printing printheads of the same color at different heights are connected to the two ink outlets of the secondary ink cartridge at different heights by pipelines one by one, and the height difference between the two ink outlets is consistent with the height difference between the two printing printheads, so that the ink outlet pressure of the two printing printheads of the same color at different heights is the same; one end of the pipeline connected to the ink outlet is higher than the other end of the pipeline connected to the printing printhead.
[0009] Further preferably, the secondary ink cartridge with the two ink outlets at different heights has at least two cartridge bottoms at different heights, and the two printing printheads of the same color are connected to the two cartridge bottoms at different heights of the secondary ink cartridge by pipelines.
[0010] Further preferably, the cartridge bottoms of the secondary ink cartridge are arranged in a stepped manner, and the lower end of each step corresponds to an ink outlet and is connected to a printing printhead by a pipeline.
[0011] Further preferably, the two printing printheads of the same color are connected to the two ink outlets at different heights of the secondary ink cartridge by pipelines of the same length.
[0012] Further preferably, the printhead tray is arranged at an angle relative to the horizontal plane, and the two printing printheads of the same color at different heights on the printhead tray are arranged in two rows vertically.
[0013] Further preferably, the two printing printheads of the same color in adjacent two rows are arranged staggered in the left-right direction of the printhead tray and overlapped in the up-down direction of the printhead tray.
[0014] Further preferably, the lower end of each printing printhead is in communication with the upper part of a flow guide groove on the non-printing side of the printhead tray, and the lower part of each flow guide groove extends to the lower edge of the printhead tray.
[0015] Further preferably, the surface of the lower edge of the printing side of the printhead tray is inclined to the non-printing side relative to the surface of the main body of the printhead tray.
[0016] Further preferably, the printhead tray is mounted with printing printheads of multiple colors, each color of printing printheads is arranged in at least two rows vertically, each row of printing printheads of multiple colors on the printhead tray is arranged at the same interval in the left-right direction of the printhead tray, and the heights of each row of printing printheads of multiple colors on the printhead tray are the same.
[0017] The utility model also provides a UV printing equipment, including any preceding described inkjet subassembly.
[0018] In the utility model, since two printing nozzles of the same color of different heights are connected with two ink outlet ports of different heights of one secondary ink box in the ink supply unit through pipelines one to one, and the height difference of the two ink outlet ports is consistent with the height difference of the corresponding two printing nozzles, the ink static pressure from each ink outlet port to the printing nozzle connected with it is the same, under the premise that the ink outlet pressure of each ink outlet port is the same, finally the ink supply pressure of the ink to each same-color printing nozzle can be consistent, thereby the ink supply pressure of the two same-color printing nozzles with height difference can be accurately controlled, and high-quality printing effect can be realized.
[0019] The UV printing equipment provided by the utility model has the advantages of the inkjet subassembly, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.
[0021] Figure 1 It is a three-dimensional structure schematic view of the inkjet subassembly provided by one specific embodiment in the utility model.
[0022] Figure 2 It is a front view structure schematic view of the inkjet subassembly provided by one specific embodiment in the utility model.
[0023] Figure 3 It is a three-dimensional structure schematic view of the inkjet subassembly provided by one specific embodiment in the utility model. Figure 2
[0024] Figure 4 It is a right view structure schematic view of the inkjet subassembly provided by one specific embodiment in the utility model.
[0025] The signs in the drawings are as follows:
[0026] 100, ink supply unit, 101, secondary ink box, 200, printing unit, 201, nozzle tray, 202, printing nozzle, 203, flow guide groove, 300, pipeline. DETAILED DESCRIPTION
[0027] The core of the utility model provides a kind of inkjet assembly and UV printing equipment, which effectively solves the problem of being unable to fine-tune the pressure of the ink output from the secondary ink cartridge to the nozzles of different heights when the nozzles are arranged in an inclined manner, resulting in the inability to completely and accurately control the ink output pressure of nozzles of different heights.
[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0029] Please refer to Figures 1 to 4 , Figure 1 is a perspective structural schematic view of the inkjet assembly provided in one specific embodiment of the utility model (wherein only one set of the secondary ink cartridge and the connection between the secondary ink cartridge and the nozzles is shown, and the same applies below) ; Figure 2 is a front view structural schematic view of the inkjet assembly provided in one specific embodiment of the utility model; Figure 3 is Figure 2 an enlarged structural schematic view of part A; Figure 4 is a right view structural schematic view of the inkjet assembly provided in one specific embodiment of the utility model.
[0030] In one specific embodiment, the inkjet assembly provided by the utility model includes an ink supply unit 100 and a printing unit 200, and the printing unit 200 includes a nozzle tray 201 and a plurality of printing nozzles 202 mounted thereon. The nozzle tray 201 is provided with at least two printing nozzles of the same color at different heights, and the ink supply unit 100 includes at least one secondary ink cartridge 101, which is provided with at least two ink outlets of the same ink output pressure at different heights. In this application, the ink output pressure and temperature of the two ink outlets are made the same through the control of various elements in the secondary ink cartridge.
[0031] The two printing nozzles of the same color at different heights are connected one-to-one to the two ink outlets of the secondary ink cartridge 101 with different heights through the pipeline 300, and the height difference of the two ink outlets is consistent with the height difference of the corresponding two printing nozzles 202, so that the ink output pressure of the two printing nozzles of the same color at different heights is the same. In addition, one end of the pipeline 300 connected with the ink outlet is higher than the other end of the pipeline 300 connected with the printing nozzle 202, so as to ensure that the ink from the ink outlet of the secondary ink cartridge 101 can flow into the interior of the printing nozzle 202 by gravity.
[0032] Since the two printing heads 202 of the same color at different heights are connected to the two ink outlets of different heights of one secondary ink cartridge 101 in the ink supply unit 100 through the pipelines 300, and the height difference of the two ink outlets is consistent with the height difference of the corresponding two printing heads 202, the ink static pressure from each ink outlet to the printing head connected thereto is the same, and under the premise that the ink outlet pressure of each ink outlet is the same, the ink supply pressure of the ink to each printing head of the same color can be finally consistent, so that the ink supply pressure of the two printing heads of the same color with height difference can be accurately controlled, and high-quality printing effect can be realized.
[0033] Therefore, the inkjet assembly provided in the embodiment of the utility model has the advantages of accurate control of ink supply pressure and high printing quality.
[0034] In some embodiments, preferably, the secondary ink cartridge 101 with two ink outlets of different heights has at least two cartridge bottoms of different heights, and the two printing heads of the same color are connected to the two cartridge bottoms of different heights of the secondary ink cartridge 101 through the pipelines 300, and the pipeline connection port is arranged at the cartridge bottom of the secondary ink cartridge, so that the connection of the pipelines 300 is more convenient.
[0035] On the basis of the above-mentioned embodiments, the cartridge bottom of the secondary ink cartridge 101 is arranged in a stepped shape, the lower end of each step corresponds to an ink outlet, and one printing head 202 of the same color is connected through the pipeline 300. Thus, the overall arrangement of the secondary ink cartridge 101 is regular, and the arrangement of the pipeline connection port is more convenient and regular.
[0036] On the basis of the above-mentioned embodiments, the two printing heads 202 of the same color are connected to the two cartridge bottoms of different heights of the secondary ink cartridge 101 through pipelines 300 of the same length. The connection through the pipelines 300 of the same length can eliminate the interference of different pipeline lengths on the ink outlet pressure, so that the control of the ink outlet pressure difference is more accurate.
[0037] In some embodiments, preferably, the head tray 201 is arranged at an angle relative to the horizontal plane, and the two printing heads 202 of the same color at different heights on the head tray 201 are arranged in two rows in the up-down direction. The up-down direction of the head tray 201 is consistent with the direction in which the printing medium moves relative to the head tray 201. For the convenience of understanding, the up-down direction of the head tray 201 is denoted by the arrow direction A in the drawing, and the left-right direction of the head tray 201 is denoted by the arrow direction B in the drawing. Specifically, as shown in Figure 1 and Figure 2 In the embodiment, the printing heads 202 of the same color are arranged in three rows in the up-down direction.
[0038] On the basis of the above-mentioned embodiments, two same-color print nozzles 202 of adjacent two rows are staggered in the left-right direction of the nozzle tray 201 and staggered and overlapped in the up-down direction of the nozzle tray 201, that is, there is an overlapping part in the up-down direction of the nozzle tray 201, so that the arrangement can avoid the printing blind area caused by the two nozzles when printing on the printing medium.
[0039] In some embodiments, the lower end of each print nozzle 202 is in communication with the upper part of a flow guide groove 203 on the non-printing side of the nozzle tray 201, and the lower part of each flow guide groove 203 extends to the lower edge of the nozzle tray 201. Thus, the ink ejected by the print nozzle 202 when not printing can be easily discharged through the flow guide groove 203 with a simple structure, avoiding affecting the printing effect, and at the same time, the overall structure of the inkjet assembly of the embodiment is simpler. In addition, when the nozzle tray 201 is inclined, the ink can flow in the flow guide groove 203 on the surface of the inclined nozzle tray 201. In the embodiment, preferably, all the print nozzles 202 on the nozzle tray 201 are arranged in the left-right direction of the nozzle tray 201, so that all the print nozzles 202 on the nozzle tray 201 are connected to the downward straight flow guide groove 203.
[0040] On the basis of the above-mentioned embodiments, the surface of the lower edge of the printing side of the nozzle tray 201 is inclined to the non-printing side relative to the surface of the main body part of the nozzle tray 201. In this way, the outlet part of the flow guide groove 203 avoids the printing side surface of the nozzle tray 201, avoiding affecting the printing.
[0041] In some embodiments, specifically, the nozzle tray 201 is provided with print nozzles 202 of multiple colors, and the print nozzles 202 of each color are arranged in three rows. The print nozzles 202 of multiple colors in each row on the nozzle tray 201 are arranged at the same interval in the second direction, and the height of the print nozzles 202 of multiple colors in each row on the nozzle tray 201 is the same, facilitating more regular arrangement of the print nozzles 202 and the connecting pipelines 300 in a smaller area. The print nozzles 202 of multiple colors are arranged in three rows, which can achieve better printing effect of multiple colors.
[0042] The utility model also provides a kind of UV printing equipment, including the inkjet assembly described above. UV printing equipment since containing the inkjet assembly described above, with the advantages of the inkjet assembly described above, which will not be described here.
[0043] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.
[0044] The above has carried out the detailed introduction to the inkjet assembly and the UV printing equipment provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims. Therefore, the utility model will not be limited to the embodiments shown in this paper, but will meet the widest range consistent with the principle and novel features disclosed in this paper.
Claims
1. An inkjet assembly comprising an ink supply unit (100) and a print unit (200), the print unit (200) comprising a printhead tray (201) and a plurality of print nozzles (202) mounted thereon, characterized in that, The printhead tray (201) is provided with at least two different height printing nozzles (202) of the same color, and the ink supply unit (100) comprises at least one secondary ink cartridge (101) provided with at least two different height ink outlets with the same ink outlet pressure. The two different height printing nozzles (202) of the same color are connected to the two different height ink outlets of the secondary ink cartridge (101) through pipelines (300) one by one, and the height difference of the two ink outlets is consistent with the height difference of the corresponding two printing nozzles (202), so that the ink outlet pressure of the two different height printing nozzles (202) of the same color is the same; one end of the pipeline (300) connected to the ink outlet is higher than the other end of the pipeline (300) connected to the printing nozzle (202).
2. The inkjet assembly of claim 1, wherein, The secondary ink cartridge (101) with two different height ink outlets has at least two different height cartridge bottoms, and two printing nozzles (202) of the same color are connected to the two different height cartridge bottoms of the secondary ink cartridge (101) through pipelines (300).
3. The inkjet assembly of claim 2, wherein, The cartridge bottom of the secondary ink cartridge (101) is arranged in a stepped type, and the lower end of each step corresponds to an ink outlet and is connected to a printing nozzle (202) through a pipeline (300).
4. The inkjet assembly of claim 1, wherein, Two printing nozzles (202) of the same color are connected to the different height ink outlets of the secondary ink cartridge (101) through pipelines (300) of the same length.
5. The inkjet assembly of claim 1, wherein, The printhead tray (201) is arranged at an angle relative to the horizontal plane, and the two different height printing nozzles (202) of the same color on the printhead tray (201) are arranged in two rows.
6. The inkjet assembly of claim 5, wherein, Two printing nozzles (202) of the same color in adjacent two rows are arranged staggered in the left-right direction of the printhead tray (201) and staggered and overlapped in the up-down direction of the printhead tray (201).
7. The inkjet assembly of claim 1, wherein, The lower end of each printing nozzle (202) is in communication with the upper part of a flow guide groove (203) on the non-printing side of the printhead tray (201), and the lower part of each flow guide groove (203) extends to the lower edge of the printhead tray (201).
8. The inkjet assembly of claim 7, wherein, The surface of the lower edge of the printing side of the printhead tray (201) is inclined to the non-printing side relative to the surface of the main body of the printhead tray (201).
9. The inkjet assembly of any of claims 1-8, wherein, The printhead tray (201) is provided with printing nozzles (202) of multiple colors, and each color of printing nozzle (202) is arranged in at least two rows, each row of printing nozzles (202) of multiple colors on the printhead tray (201) is arranged at the same interval in the left-right direction of the printhead tray (201), and the height of each row of printing nozzles (202) of multiple colors on the printhead tray (201) is the same.
10. A UV printing apparatus characterized by comprising: The inkjet assembly comprises the printhead tray (201) of any one of the preceding claims 1-9.