Multi-nozzle splicing type printing module

Abstract

The utility model provides a multi-nozzle splicing type printing module, which comprises a plurality of rows of nozzle assemblies, each row of nozzle assemblies comprises a plurality of nozzle assemblies which are arranged along the longitudinal direction, each nozzle assembly comprises a plurality of nozzle units which are arranged along the longitudinal direction, each nozzle unit is provided with a printing area, and each nozzle unit is provided with a plurality of nozzles. A first interval is formed between every two adjacent printing areas on each spray head assembly in the longitudinal direction, a second interval is formed between every two adjacent printing areas in every two adjacent spray head assemblies in each row of spray head assemblies, every two rows of spray head assemblies form a spray printing module, and in one spray printing module, a first interval is formed between every two adjacent printing areas in every two adjacent spray head assemblies. Wherein the first gap and the second gap of one column of nozzle assemblies are blocked by the printing area of the other column of nozzle assemblies in the transverse direction. By means of the design, a printing area can be better covered in the transverse direction during printing, and the situation that printing is blank or discontinuous possibly caused by gaps of the nozzles is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, and more specifically to a multi-nozzle splicing printing module. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] Wide-format printers are now widely used in a variety of large-scale printing applications. However, existing wide-format printer printhead assemblies present several issues. Traditional office inkjet printer printheads, such as those purchased from Brother's official website in Japan, are designed primarily for small printers and are difficult to directly apply to wide-format printers. These standard printheads lack the necessary mounting holes, preventing them from being securely installed on wide-format printers. Furthermore, their size design is not suitable for splicing multiple printheads together, a significant drawback for wide-format printers that need to cover a larger print area.

[0004] It should be noted that the above technical background is merely for the purpose of providing a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. It should not be assumed that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a multi-nozzle splicing printing module.

[0006] In order to solve the above technical problems, the utility model provides a multi-nozzle splicing printing module, wherein the printing module includes multiple columns of nozzle assemblies, each column of nozzle assemblies includes multiple nozzle assemblies arranged in the longitudinal direction, and the nozzle assembly includes multiple nozzle units arranged in the longitudinal direction, and the nozzle unit has a printing area. There is a first interval in the longitudinal direction between two adjacent printing areas on each nozzle assembly, and there is a second interval between two adjacent printing areas in two adjacent nozzle assemblies in each column of nozzle assemblies. Every two columns of nozzle assemblies constitute a printing module. In a printing module, the first gap and the second gap of one column of nozzle assemblies are blocked in the transverse direction by the printing area of ​​another column of nozzle assemblies.

[0007] Preferably, in a printing module, the overlapping length in the horizontal direction between the printing area of ​​one column and the printing area of ​​another column is 1.64-1.68 mm.

[0008] Preferably, the nozzle assembly includes a shell, at least two nozzle units arranged at the bottom of the shell, and a fixing frame arranged in the shell, and the fixing frame includes at least two mounting slots for mounting the nozzle units.

[0009] Preferably, the nozzle assembly includes two nozzle units, the fixing frame includes two mounting slots for mounting the nozzle units, namely a second mounting slot and a third mounting slot, and the nozzle unit is fixed to the fixing frame by a plurality of second fixing screws.

[0010] Preferably, the fixing frame is made of graphite material.

[0011] Preferably, an ink path nozzle is further provided in the shell, and a first mounting groove is provided on the upper surface of the fixed frame, and the first mounting groove is located between the second mounting groove and the third mounting groove, and a plurality of through holes are provided at the bottom of the first mounting groove, and the ink path nozzle is installed in the first mounting groove, and the lower end surface of the ink path nozzle is connected with the ink inlet and the ink outlet of the nozzle unit, and the upper end of the ink path nozzle is respectively provided with an ink return nozzle and an ink inlet nozzle, and the ink return nozzle is connected with an ink return tube, and the ink inlet nozzle is connected with an ink inlet tube, and the upper ends of the ink return tube and the ink inlet tube extend from the upper end of the shell, and the ink of the nozzle assembly enters the nozzle unit from the ink inlet tube and is returned from the ink return tube.

[0012] Preferably, the housing comprises a first housing and a second housing spliced ​​together, and the first housing and the second housing are fixedly connected by a plurality of first fixing screws.

[0013] Preferably, the shell is also equipped with a data connector, the part of the data connector located outside the shell is provided with an external data connector, the part of the data connector located inside the shell is provided with an internal data connector, and the internal data connector is connected to the nozzle unit signal.

[0014] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0015] This utility model discloses a multi-nozzle splicing printing module. Each nozzle assembly includes two nozzle units, each having a printing area. Every two columns of nozzle assemblies constitute a printing module. The printing module includes multiple horizontally arranged printing modules. In a printing module, the gaps between nozzle assemblies in one column are blocked by the printing areas of nozzle assemblies in another column. This design enables better coverage of the printing area in the horizontal direction during printing, reducing the possibility of blank or discontinuous printing caused by nozzle gaps. When printing fine patterns, text, or barcodes requiring high precision, this double-column structure ensures the integrity and accuracy of patterns and lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the exploded structure of the printer nozzle assembly of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the printer nozzle assembly of the present utility model.

[0018] Figure 3 It is a schematic diagram of the internal structure of the printer nozzle assembly of the present utility model.

[0019] Figure 4 It is a structural schematic diagram of the fixing frame of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the multi-nozzle splicing printing module of the present invention.

[0021] Wherein: 1, housing; 11, first housing; 12, second housing; 13, first fixing screw; 2, nozzle unit; 3, fixing frame; 4, second fixing screw; 51, ink return pipe; 52, ink inlet pipe; 53, ink path nozzle; 531, ink return nozzle; 532, ink inlet nozzle; 61, first thermal cycle box; 62, second thermal cycle box; 611, first thermal cycle nozzle; 612, second thermal cycle nozzle; 621, third thermal cycle Ring nozzle; 622, fourth thermal circulation nozzle; 63, first sealing ring; 64, second sealing ring; 81, first thermal circulation water pipe; 82, second thermal circulation water pipe; 83, third thermal circulation water pipe; 9, data connector; 91, external data connector; 92, internal data connector; 7, sealing element; 93, third sealing ring; 31, first mounting slot; 32, second mounting slot; 33, third mounting slot; 10, nozzle assembly; 100, printing module. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that, in the description of this utility model, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0024] like Figure 5As shown, the utility model provides a multi-nozzle splicing printing module, the printing module includes multiple columns of nozzle assemblies 10, each column of nozzle assemblies includes multiple nozzle assemblies 10 arranged in the longitudinal direction, the nozzle assembly includes multiple nozzle units arranged in the longitudinal direction, the nozzle unit has a printing area, there is a first gap in the longitudinal direction between two adjacent printing areas on each nozzle assembly, and there is a second gap between two adjacent printing areas in two adjacent nozzle assemblies in each column of nozzle assemblies. Every two columns of nozzle assemblies constitute a printing module 100. In a printing module 100, the first gap and the second gap of one column of nozzle assemblies are blocked in the horizontal direction by the printing area of ​​another column of nozzle assemblies. Furthermore, in a printing module 100, the length of overlap between the printing area of ​​one column and the printing area of ​​another column in the horizontal direction is 1.64-1.68mm. This design enables better coverage of the printing area in the horizontal direction during printing, reducing the printing blanks or discontinuities that may be caused by the nozzle gap. When printing fine patterns, text, or barcodes requiring high precision, this double-column structure can ensure the integrity and accuracy of patterns and lines.

[0025] like Figure 1-4 As shown, the utility model provides a nozzle assembly suitable for wide-format inkjet printers, comprising a housing 1, at least two nozzle units 2 provided at the bottom of the housing 1, and a fixing frame 3 provided in the housing 1, wherein the fixing frame 3 includes at least two mounting slots for mounting the nozzle units 2. Wide-format printers require multiple nozzle units 2 to work together, and traditional nozzle designs are difficult to meet this requirement. The fixing frame 3 of the present design can effectively fix the nozzle unit 2. It is made of high-strength material (such as graphite), and the distance and angle between the nozzle units 2 are taken into consideration to ensure the consistency and accuracy of the printing effect, thereby solving the installation and fixing problems of the nozzle assembly in the wide-format printer, improving the stability of the equipment and the printing effect, and enhancing durability and reliability.

[0026] An ink nozzle 53 is disposed within the housing 1. A first mounting slot 31 is disposed on the upper surface of the fixed frame 3. The first mounting slot 31 is located between the other mounting slots and has multiple through-holes at its bottom. The ink nozzle 53 is mounted within the first mounting slot 31. Its lower end surface communicates with the ink inlet and outlet of the nozzle unit 2. An ink return nozzle 531 and an ink inlet nozzle 532 are disposed at the upper end, connecting to the ink return tube 51 and the ink inlet tube 52, respectively. The upper ends of the ink return tube 51 and the ink inlet tube 52 extend from the upper end of the housing 1 to achieve a circulating ink supply. The ink nozzle 53 can be made of a corrosion-resistant and wear-resistant material (such as stainless steel or ceramic), and its internal structure can be optimized to improve ink flow efficiency. The first mounting slot 31 and through-holes can be designed according to the specifications of the ink nozzle 53. The ink return tube 51 and the ink inlet tube 52 can be made of a soft, pressure-resistant material (such as a silicone tube). This design effectively solves the connectivity problem between the ink path nozzle 53 and the nozzle unit 2, improves the working efficiency and stability of the nozzle assembly, simplifies the ink path connection structure, facilitates maintenance, and avoids inkjet failures.

[0027] When the nozzle assembly includes two nozzle units 2, the fixing frame 3 is provided with a second mounting slot 32 and a third mounting slot 33. The nozzle units 2 are secured to the fixing frame 3 via a plurality of second fixing screws 4. The size and shape of the mounting slots are designed according to the specifications of the nozzle units 2. The second fixing screws 4 are made of durable materials such as high-strength steel to ensure secure fixation. This secure and reliable fixing method improves installation convenience, the stability and reliability of the nozzle units 2, and solves the problem of fixing the nozzle units 2.

[0028] The second mounting groove 32 and the third mounting groove 33 are vertically penetrating structures, and are respectively installed with the first thermal circulation box 61 and the second thermal circulation box 62, which are respectively attached to the upper surfaces of the two nozzle units 2. The thermal circulation box is made of a material with excellent thermal conductivity (such as aluminum alloy or copper), and a flow channel is provided inside to achieve thermal circulation by pumping coolant or heating liquid. The flow channel design should be evenly distributed to ensure uniform heat transfer. The first heat circulation box 61 is provided with a first heat circulation nozzle 611 and a second heat circulation nozzle 612, and the second heat circulation box 62 is provided with a third heat circulation nozzle 621 and a fourth heat circulation nozzle 622. The nozzle assembly also includes a first heat circulation water pipe 81, a second heat circulation water pipe 82 and a third heat circulation water pipe 83. The lower end of the first heat circulation water pipe 81 is connected to the first heat circulation nozzle 611, the lower end of the second heat circulation water pipe 82 is connected to the third heat circulation nozzle 621, and the two ends of the third heat circulation water pipe 83 are respectively connected to the second heat circulation nozzle 612 and the fourth heat circulation nozzle 622. The cooling water enters from the first heat circulation water pipe 81, enters the second heat circulation box 62 through the third heat circulation water pipe 83, and flows out from the second heat circulation water pipe 82. The upper ends of the first heat circulation water pipe 81 and the second heat circulation water pipe 82 extend from the upper end of the shell 1. This design solves the cooling problem of inkjet printer nozzles in wide-format printers, ensuring the nozzles' suitable operating temperature and preventing overheating from affecting printing results. The cooling system has a simple structure and good cooling effect, improving print quality and reliability.

[0029] The shell 1 includes a first shell 11 and a second shell 12 that are spliced ​​together. The two are fixedly connected by multiple first fixing screws 13. The splicing method can adopt a groove and protrusion matching or a snap-on structure. The first fixing screws 13 are made of high-strength alloy material, and the number and distribution position are adjusted according to actual conditions to ensure that the structure is stable and firm, solving the shell splicing and stability problems of the nozzle assembly in wide-format printer applications, and improving reliability and performance.

[0030] The upper end of the housing has a first opening and a second opening, each of which is fitted with a sealing member 7 (i.e., a first seal and a second seal). The first seal 7 has two through-holes for the first heat circulation water pipe 81 and the ink return pipe 51 to extend, while the second seal has two through-holes for the second heat circulation water pipe 82 and the ink inlet pipe 52 to extend. The seals are made of an elastic sealing material such as rubber or silicone. The through-holes are designed according to the size and position of the pipes and are secured to the openings by adhesive bonding, snap fastening, or other means to ensure sealing performance. The upper end of the housing also has a third opening, fitted with a data connector 9. Data connector 9 is sealed to the third opening via a third sealing ring 93. The portion outside the housing is provided with an external data connector 91, and the portion inside the housing is provided with an internal data connector 92. Internal data connector 92 is connected to the printhead unit 2 for signal communication. The third sealing ring 93 is made of high-temperature and corrosion-resistant silicone. Data connector 9 can be connected using either a threaded or snap-fit ​​connection. Its external design provides a standardized interface for easy connection to external circuits. These designs solve the sealing and data connection problems at the thermal circulation water pipes, ink tubes and data joints, ensure the stability of the internal environment of the printhead assembly, and improve the reliability and stability of the printer.

[0031] The nozzle unit 2 of the present application is sealed and installed with the first mounting groove 31 and the second mounting groove 32 respectively through the second sealing ring 64, and the first thermal cycle box 61 and the second thermal cycle box 62 are sealed and installed with the first mounting groove 31 and the second mounting groove 32 respectively through the first sealing ring 63. The sealing ring material can be rubber, silicone, etc., and the shape and size are designed according to the structure of the nozzle unit 2 and the thermal cycle box. O-rings, etc. can be used. The installation methods include snap-on, press-in or bonding, etc., forming a double seal, effectively preventing leakage, improving the reliability and stability of the nozzle assembly, and improving the printing quality and efficiency of the inkjet printer.

[0032] The above-described embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A multi-nozzle splicing printing module, characterized in that: The printing module includes multiple columns of nozzle assemblies, each column of nozzle assemblies includes multiple nozzle assemblies arranged in the longitudinal direction. The nozzle assembly includes a plurality of nozzle units arranged in the longitudinal direction, each nozzle unit having a printing area, a first interval in the longitudinal direction between two adjacent printing areas on each nozzle assembly, and a second interval between two adjacent printing areas in two adjacent nozzle assemblies in each column of nozzle assemblies. Every two rows of nozzle assemblies constitute a printing module. In a printing module, the first gap and the second gap of one column of nozzle assemblies are blocked in the transverse direction by the printing area of ​​another column of nozzle assemblies.

2. The printing module according to claim 1, characterized in that: In a printing module, the overlapping length in the horizontal direction between the printing area of ​​one column and the printing area of ​​another column is 1.64-1.68 mm.

3. The printing module according to claim 1, characterized in that: The nozzle assembly comprises a shell, at least two nozzle units arranged at the bottom of the shell, and a fixing frame arranged in the shell. The fixing frame comprises at least two mounting grooves for mounting the nozzle units.

4. The printing module according to claim 3, characterized in that: The nozzle assembly includes two nozzle units, and the fixing frame includes two mounting slots for mounting the nozzle units, namely a second mounting slot and a third mounting slot. The nozzle unit is fixed to the fixing frame by a plurality of second fixing screws.

5. The printing module according to claim 4, characterized in that: The fixing frame is made of graphite material.

6. The printing module according to claim 4, characterized in that: An ink path nozzle is also provided in the shell, and a first mounting groove is provided on the upper surface of the fixed frame, and the first mounting groove is located between the second mounting groove and the third mounting groove. A plurality of through holes are provided at the bottom of the first mounting groove, and the ink path nozzle is installed in the first mounting groove. The lower end surface of the ink path nozzle is connected with the ink inlet and the ink outlet of the nozzle unit, and the upper end of the ink path nozzle is respectively provided with an ink return nozzle and an ink inlet nozzle, and the ink return nozzle is connected with an ink return tube, and the ink inlet nozzle is connected with an ink inlet tube, and the upper ends of the ink return tube and the ink inlet tube extend from the upper end of the shell, and the ink of the nozzle assembly enters the nozzle unit from the ink inlet tube and is returned from the ink return tube.

7. The printing module according to claim 6, characterized in that: The housing comprises a first housing and a second housing which are spliced ​​together. The first housing and the second housing are fixedly connected by a plurality of first fixing screws.

8. The printing module according to claim 7, characterized in that: The shell is also equipped with a data connector. The part of the data connector located outside the shell is provided with an external data connector, and the part of the data connector located inside the shell is provided with an internal data connector. The internal data connector is connected to the nozzle unit signal.

Images