Inkjet printing module and inkjet printing apparatus

Abstract

The present application belongs to the field of inkjet printing technology, and particularly relates to an inkjet printing module and an inkjet printing device. The inkjet printing module of the present application is hung below a sliding driving mechanism of an inkjet printing device, and comprises a horizontally arranged top plate, which is in sliding connection with the sliding driving mechanism; a vertically arranged middle stand plate, one end of which is connected with the middle part of the top plate; a bottom plate, which is located below the top plate, the middle part of the bottom plate being connected with the end of the middle stand plate away from the top plate, the bottom plate comprising a first part and a second part, the first part and the second part being located on opposite sides of the middle stand plate, respectively; a nozzle assembly, which is installed on the bottom plate; and an ink cartridge, which is connected with the nozzle through an ink path. The present application can effectively reduce the vibration of the inkjet printing module during work, improve the stability of inkjet printing, improve the convenience of maintenance of the printing module, and reduce the difficulty of adjustment of the printing module.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of inkjet printing technology, and in particular to an inkjet printing module and an inkjet printing device. BACKGROUND

[0002] The inkjet printing module is generally rigidly connected with the device and forms a whole with the device to ensure the printing accuracy of the inkjet printing module. Since the device has many moving parts in motion when working, and the high-flow fan is also in working state, these moving parts and the fan will cause the resonance of the device. In addition, some external factors will also cause the vibration of the inkjet printing device. For example, when the device is working, if a large punching machine or other equipment is working synchronously nearby, external vibration will be generated, and the external vibration will be transmitted to the device through the ground. Since the ink droplets ejected by the inkjet head are very small, these vibrations will directly affect the ink droplet formation process of the inkjet head, causing the size of the ink droplets to change, the ink droplets to be seriously trailed, and the ink to fly, thereby reducing the printing stability of the inkjet printing device. SUMMARY

[0003] Therefore, the embodiments of the present application provide an inkjet printing module and an inkjet printing device to solve the technical problem that the inkjet printing device in the prior art is easily affected by vibration and causes the printing stability to decrease.

[0004] The technical scheme adopted by the present application is as follows:

[0005] In a first aspect, the present application provides an inkjet printing module, which is suspended below a sliding driving mechanism of an inkjet printing device, and comprises:

[0006] a top plate arranged horizontally, which is in sliding connection with the sliding driving mechanism;

[0007] an intermediate vertical plate arranged vertically, one end of which is connected with the top plate at the middle part of the top plate;

[0008] a bottom plate located below the top plate, the middle part of the bottom plate being connected with the end of the intermediate vertical plate away from the top plate, the bottom plate comprising a first part and a second part, the first part and the second part being located on opposite sides of the intermediate vertical plate, respectively;

[0009] a printhead assembly installed on the bottom plate, the printhead assembly comprising a printhead;

[0010] a cartridge connected with the printhead through an ink path;

[0011] The top plate, the middle vertical plate and the first part form a semi-enclosed first accommodating chamber, the top plate, the middle vertical plate and the second part form a second accommodating chamber, the opening directions of the first accommodating chamber and the second accommodating chamber are opposite, and the ink cartridge is located in the first accommodating chamber and / or the second accommodating chamber.

[0012] Preferably, the first portion and the second portion are both flat-plate shaped, and the angle between the first portion and the second portion is less than 180 degrees.

[0013] Preferably, the nozzle assembly includes a first nozzle group and a second nozzle group, and the first nozzle group and the second nozzle group are respectively located on opposite sides of the middle vertical plate.

[0014] Preferably, the ink cartridge is located above the nozzle group corresponding to the ink supply.

[0015] Preferably, it further comprises a nozzle driving circuit board, the nozzle driving circuit board is electrically connected to the nozzle, and the nozzle driving circuit board is mounted on the middle vertical plate.

[0016] Preferably, it further comprises a circulating water cooling pipeline, at least a portion of which is embedded in the middle vertical plate.

[0017] Preferably, a slider is provided on the top plate, the sliding drive mechanism includes a guide rail, and the slider is used for sliding connection with the guide rail.

[0018] In a second aspect, the present invention provides an inkjet printing device, comprising a sliding drive mechanism and the inkjet printing module described in the first aspect.

[0019] Preferably, it also includes a first paper feed roller, a second paper feed roller and a third paper feed roller which are arranged in sequence along the paper feeding order, wherein the common tangent plane of the first paper feed roller and the second paper feed roller is parallel to the first part of the bottom plate, and the common tangent plane of the second paper feed roller and the third paper feed roller is parallel to the second part of the bottom plate.

[0020] Preferably, the first part and the second part are symmetrical about a first plane in the vertical direction, the first symmetry plane is located at the center of the middle vertical plate, the first paper feed roller and the third paper feed roller are symmetrical about a second plane in the vertical direction, the axis of the second paper feed roller is located on the second plane, the second plane coincides with the first plane, and the angle between the common tangent plane of the first paper feed roller and the second paper feed roller and the common tangent plane of the second paper feed roller and the third paper feed roller is less than 180 degrees.

[0021] Beneficial effects: The inkjet printing module of the present invention adopts a suspension method to make the top plate and the sliding drive mechanism slideably connected, and the bottom plate with the nozzle installed is set below the top plate, and then the bottom plate and the bottom plate are connected by a vertically arranged middle plate, and the connection position is set in the middle of the top plate and the middle of the bottom plate. In this way, the vibration can be filtered by the top plate, and the middle plate is used to absorb energy, thereby eliminating the resonance acting on the bottom plate. The overall frame structure composed of the bottom plate, the top plate and the middle plate has a high strength in the vertical direction to ensure the stability of the bottom plate on which the nozzle is installed. At the same time, the high torsion resistance of the above-mentioned overall frame structure in the depth direction is used to effectively prevent the printing module from shaking when moving. After the nozzle is installed on the bottom plate of the above-mentioned overall frame structure, this embodiment can fully utilize the characteristics of the above-mentioned overall frame structure with high upper and lower connection strength, good front and back stability, and weak force on the two sides far away from the middle plate to effectively isolate low-frequency and large-scale vibrations, thereby avoiding the influence of the vibration of the printing module on the inkjet operation during printing, thereby significantly improving the stability of printing. Since the present invention suspends the nozzle printing module below the sliding drive mechanism and leaves accommodating cavities on both sides of the middle vertical plate, the inkjet printing module can be easily maintained from both sides and the angle between the two sides of the base plate can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work, and these are all within the scope of protection of the present invention.

[0023] Figure 1 A three-dimensional structural diagram of the inkjet printing module of the present invention;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the inkjet printing module of the present invention;

[0025] Figure 3 Schematic diagram of the three-dimensional structure of the lower inclined plate of the present invention;

[0026] Figure 4 Schematic diagram of the positional relationship between the second protective cover, the third protective cover and the bottom plate of the present invention;

[0027] Figure 5 This is a front view of the nozzle printing module of the present invention;

[0028] Figure 6 A bottom view of the nozzle printing module of the present invention;

[0029] Figure 7Schematic diagram of the three-dimensional structure of the base plate of the present invention;

[0030] Figure 8 A schematic diagram of the positional relationship between the nozzle printing module and the printing medium conveying system of the inkjet printing device of the present invention;

[0031] Figure 9 is a schematic diagram of a printing medium conveying system of the present invention;

[0032] Figure 10 Schematic diagram of the structural decomposition of the sliding drive mechanism and the inkjet printing module in the inkjet printing device of the present invention;

[0033] Figure 11 Schematic diagram of the connection relationship between the sliding drive mechanism and the inkjet printing module in the inkjet printing device of the present invention;

[0034] Figure 12 Schematic diagram of the three-dimensional structure of the sliding drive mechanism of the present invention;

[0035] Parts and their numbers in the figure:

[0036] Inkjet printing module 100, top plate 1, first reinforcement strip 11, second reinforcement strip 12, middle vertical plate 2, upper inclined plate 21, circulating water cooling pipe 22, lower inclined plate 22, connecting portion 221, first oblique edge 222, second oblique edge 223, bottom edge 224, first sub-edge 2241, second sub-edge 2242, bottom plate 3, first portion 31, second portion 32, mounting groove 33, equal height column 34, nozzle assembly 4, first nozzle group 41, second nozzle group 42, nozzle 43, nozzle mounting plate 44, ink cartridge 5, first mounting bracket 51, second mounting bracket 52, ink cartridge mounting plate 53, support Plate 54, first accommodating cavity 61, second accommodating cavity 62, first protective cover 71, second protective cover 72, third protective cover 73, fourth protective cover 74, nozzle drive circuit board 8, first plane 91, second plane 92, sliding drive mechanism 200, sliding beam 210, ball screw 220, servo motor 230, beam inclined plate 240, printing medium conveying system 300, first paper feed roller 310, second paper feed roller 320, third paper feed roller 330, fourth paper feed roller 340, fifth paper feed roller 350, printing medium 400, first printing section 410, second printing section 420. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations, elements defined by the phrase "comprising..." do not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the elements. The embodiments of the present invention and the features thereof may be combined with each other if there is no conflict, and all are within the scope of protection of the present invention.

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides an inkjet printing module 100, which is suspended below the sliding drive mechanism 200 of the printing device. The printing module mainly includes a top plate 1, an intermediate vertical plate 2, a bottom plate 3, a nozzle assembly 4, and an ink cartridge 5. The top plate 1, the intermediate vertical plate 2, and the bottom plate 3 form the integral support of the inkjet printing module 100, and the remaining components of the inkjet printing module 100 are mounted on this integral support. The side of the top plate 1 facing away from the nozzle 43 is slidably connected to the sliding drive mechanism 200. Driven by the sliding drive mechanism 200, the integral support composed of the top plate 1, the intermediate vertical plate 2, and the bottom plate 3 moves linearly in a horizontal direction. To enhance the strength and rigidity of the top plate 1, this embodiment provides a first reinforcement bar 11 and two second reinforcement bars 12 on the top plate 1. The first reinforcement bar 11 is located in the middle of the top plate 1, and the two second reinforcement bars 12 are located on either side of the first reinforcement bar 11. The first reinforcement bar 11 and the second reinforcement bar 12 are respectively provided with threaded holes that cooperate with the ball screw 220 of the driving mechanism.

[0039] Specifically, the top plate 1 is arranged horizontally. The middle vertical plate 2 is arranged vertically. The bottom plate 3 is arranged below the top plate 1. One end of the middle vertical plate 2 is connected to the top plate 1 at the middle portion of the top plate 1; the middle portion of the bottom plate 3 is connected to the end of the middle vertical plate 2 away from the top plate 1. The bottom plate 3 includes a first portion 31 and a second portion 32, which are respectively located on opposite sides of the middle vertical plate 2.

[0040] The top plate 1, the middle vertical plate 2, and the first portion 31 form a semi-enclosed first accommodating chamber 61. The top plate 1, the middle vertical plate 2, and the second portion 32 form a second accommodating chamber 62. The first accommodating chamber 61 and the second accommodating chamber 62 have opposite openings. The ink cartridge 5 is located in the first accommodating chamber 61 and / or the second accommodating chamber 62. The ink cartridge 5 is connected to the printhead 43 via an ink path. The printhead assembly 4 is mounted on the bottom plate 3. In this embodiment, the printhead assembly 4 includes the printhead 43.

[0041] Because the middle vertical plate 2 divides the overall frame structure of the inkjet printing module 100 into two left and right parts, the two parts roughly form a semi-enclosed structure, forming a cavity in which components such as the ink cartridge 5 can be installed. Multiple ink cartridges 5 can be installed in the first accommodating cavity 61 or in the second accommodating cavity 62. The ink cartridges 5 can also be divided into two groups, one group installed in the first accommodating cavity 61 and the other group installed in the second accommodating cavity 62. This is not limited here.

[0042] In order to ensure that the middle vertical plate 2 can be reliably connected to the top plate 1, two triangular upper inclined plates 21 are further provided in this embodiment. The two upper inclined plates 21 are respectively located at the two ends of the middle vertical plate 2, and the bottom edge of the upper inclined plates 21 is connected to the top plate 1. Figure 3 As shown, a strip-shaped connecting portion perpendicular to the bottom edge of the upper oblique-stayed plate 21 is provided in the middle of the upper oblique-stayed plate 21 , and the connecting portion is connected to the middle vertical plate 2 .

[0043] In order to reliably connect the intermediate vertical plate 2 with the bottom plate 3, the embodiment further provides two substantially triangular lower inclined pull plates 22, which are respectively located at two ends of the intermediate vertical plate 2, the bottom edge of the lower inclined pull plate 22 abuts against the bottom plate 3, and the middle part of the lower inclined pull plate is provided with a strip-shaped connecting part 211 perpendicular to the bottom edge of the inclined pull plate, which is connected with the intermediate vertical plate 2. In the embodiment, the upper inclined pull plate 21 and the lower inclined pull plate 22 are respectively used at the upper and lower ends of the intermediate vertical plate 2 to connect with the top plate 1 and the bottom plate 3, and the middle part of the overall frame has strong rigidity and strength. The lower inclined pull plate 22 includes a first inclined edge 222, a second inclined edge 223 and a bottom edge 224, one end of the bottom edge abuts against the first inclined edge 222, and the opposite end abuts against the second inclined edge 223, and the bottom edge abuts against the upper surface of the bottom plate. The bottom edge is divided into a first sub-edge 2241 and a second sub-edge 2242 by the intermediate vertical plate, and the first sub-edge 2241 and the second sub-edge 2242 are respectively located at the opposite sides of the intermediate vertical plate 2. The included angle between the first sub-edge 2241 and the second sub-edge 2242 is the same as the included angle between the first part 31 and the second part 32. By using the foregoing structure, the space on the left and right sides of the intermediate vertical plate can be used to flexibly adjust the included angle between the first part 31 and the second part 32 of the bottom plate. When adjusting, only the bottom edge 224 of the lower inclined pull plate 222 is used as the reference for adjustment, and the first part 2241 and the first sub-edge 2242 are brought together, and the second part and the second sub-edge are brought together, so that the distance between the nozzles on the left and right sides of the intermediate vertical plate and the printing medium can be ensured to be the same.

[0044] As shown in Figure 1 and Figure 2 , the inkjet printing module 100 of the embodiment further includes a first protective cover 71 and a second protective cover 72, the first protective cover 71 and the first upper inclined pull plate and the first lower inclined pull plate 22 are located on the same side of the intermediate vertical plate 2, and the second protective cover 72 and the second upper inclined pull plate and the second lower inclined pull plate 22 are located on the same side of the intermediate vertical plate 2. The first protective cover 71 and the second protective cover 72 are respectively covered on the front and rear sides of the inkjet printing module 100, and are used to protect the components located in the first accommodating cavity 61 and the second accommodating cavity 62.

[0045] As shown in Figure 2 , the inkjet printing module 100 of the embodiment further includes a third protective cover 73 and a fourth protective cover 74, the third protective cover 73 is perpendicular to the top plate 1 and the first protective cover 71, and the fourth protective cover 74 is perpendicular to the top plate 1 and the second protective cover 72. As shown in Figure 3 and Figure 4 , after using the foregoing structure, the top plate 1, the first protective cover 71, the second protective cover 72, the third protective cover 73 and the fourth protective cover 74 form a hollow structure of a rectangular cuboid, so that the main components such as the ink cartridge 5, the nozzle 43 and the nozzle driving circuit board 8 placed therein can be well protected.

[0046] Typically, inkjet printing modules adopt a side-mounted structure, which not only cannot avoid the vibration of the inkjet printing module, but also leaves no space for maintenance and adjustment of the nozzles on both sides of the vertical plate. In this embodiment, the top plate 1 is slidably connected to the sliding drive mechanism 200 by a suspension method, and the bottom plate 3 on which the nozzle 43 is installed is set below the top plate 1. The bottom plate 3 and the bottom plate 3 are then connected by a vertically arranged middle vertical plate 2, and the connection position is set in the middle of the top plate 1 and the middle of the bottom plate 3. In this way, the vibration can be filtered by the top plate 1, and the energy can be absorbed by the middle vertical plate 2, thereby eliminating the resonance acting on the bottom plate 3. The stability of the bottom plate 3 on which the nozzle 43 is installed is ensured by utilizing the high strength of the aforementioned overall frame structure in the vertical direction. At the same time, the high torsion resistance of the aforementioned overall frame structure in the depth direction is utilized to effectively avoid the shaking of the printing module during movement. This embodiment, by mounting the printhead 43 on the bottom plate 3 of the aforementioned integral frame structure, fully utilizes the integral frame structure's high vertical connection strength, good front-to-back stability, and the weaker forces on the sides farther from the middle vertical plate 2 to effectively isolate low-frequency, high-amplitude vibrations. This prevents the vibration of the print module from affecting inkjet operation during printing, significantly improving printing stability. Because the inkjet print module is suspended, it is not obstructed by other components of the inkjet printer, making it easy to maintain and adjust the inkjet print module.

[0047] like Figure 5 and Figure 6 As shown, as an optional but advantageous embodiment, in this embodiment, the nozzle assembly 4 includes a first nozzle group 41 and a second nozzle group 42, and the first nozzle group 41 and the second nozzle group 42 are respectively located on opposite sides of the middle vertical plate 2. In this embodiment, the nozzles 43 can be divided into two groups, and then the two groups of nozzles 43 are respectively arranged on both sides of the middle vertical plate 2. Since the vertical plates are respectively connected to the middle of the bottom plate 3 and the top plate 1, the nozzles 43 on both sides can be maintained through the openings on the left and right sides of the overall frame, so that the operating space is large and maintenance is convenient. A first water-cooling radiator assembly and a second water-cooling radiator assembly are also provided on the bottom plate 3. The water-cooling radiator assembly is used to quickly absorb the heat on the bottom plate 3, thereby dissipating heat for the nozzles 43.

[0048] like Figure 2 As shown, each group of nozzles 43 includes a nozzle mounting plate 44 and a nozzle 43, and the nozzle 43 is mounted on the corresponding nozzle mounting plate 44. Figure 7 As shown, the bottom plate 3 is provided with a mounting groove 33 which is complementary to the shape of the nozzle mounting plate 44. The nozzle mounting plate 44 is embedded in the mounting groove 33 and makes the end of the nozzle spraying ink face the direction of the printing medium conveying system 300 of the inkjet printing device.

[0049] like Figure 5 As shown, in this embodiment, both the first portion 31 and the second portion 32 are flat, with the angle between them being less than 180 degrees. In this embodiment, the base plate 3 is divided into the first portion 31 and the second portion 32 by the middle vertical plate 2. The angle between the two portions is set to be less than 180 degrees, so that the first portion 31 and the second portion 32 form two inclined planes. Consequently, the nozzle surface of the printhead 43 mounted on the base plate 3 also forms two inclined planes. With this structure, the flexible printing medium 400 can be transported in a direction parallel to the two inclined planes. During the inkjet printing process, the flexible printing medium 400 passes under the nozzle 43 of the inkjet printing module 100 along two inclined planes in sequence, reducing the length of a single plane of the printing medium 400 during the inkjet printing process. This makes the transportation of the flexible printing medium 400 during the inkjet printing process smoother and does not produce wrinkles, thereby improving the accuracy of color registration when printing on the left and right sides, and can also make the color registration distance of the inkjet printing module 100 smaller, thereby further improving the stability of inkjet printing.

[0050] The first nozzle group 41 includes at least one inkjet unit for printing a first color ink, at least one inkjet unit for printing a second color ink, at least one inkjet unit for printing a third color ink, and at least one inkjet unit for printing a fourth color ink. Each inkjet unit can be one or more columns of nozzles, one or more nozzles 43, or any combination of one or more columns of nozzles and one or more nozzles 43, without limitation.

[0051] Similarly, the second printhead group 42 includes at least one inkjet unit for printing the first color ink, at least one inkjet unit for printing the second color ink, at least one inkjet unit for printing the third color ink, and at least one inkjet unit for printing the fourth color ink. Each inkjet unit can be one or more rows of nozzles, one or more printheads 43, or any combination of one or more rows of nozzles and one or more printheads 43, without limitation.

[0052] Using the aforementioned method, the first nozzle group 41 produces a four-color combination on one side of the middle vertical panel 2, while the second nozzle group 42 produces a four-color combination on the other side of the middle vertical panel 2. Because the four-color combination produced by the first nozzle group 41 is mounted on the first portion 31, the spacing between the individual color modules in the color combination is reduced, thereby reducing the color matching distance. Similarly, because the four-color combination produced by the second nozzle group 42 is mounted on the second portion 32, the spacing between the individual color modules in the color combination is reduced, thereby reducing the color matching distance.

[0053] like Figure 2 As shown, in this embodiment, the inkjet printing module further includes four contour posts 34, which are located at the four corners of the base plate 3. One end of each contour post 34 is connected to the base plate 3, and the other end is connected to the top plate 1. The arrangement of the contour posts 34 at the four corners of the base plate 3 maintains a stable angular relationship between the planes of the first portion 31 and the second portion 32 of the base plate 3 and the plane of the top plate 1, thereby improving the stability of inkjet printing.

[0054] The ink cartridge 5 is primarily used to store ink for inkjet printing and supplies ink to its corresponding nozzle 43. In this embodiment, the ink cartridge 5 is located above the nozzle assembly 4 to which it supplies ink and is connected to the nozzle 43 within the nozzle assembly 4. When the ink cartridge 5 is connected to the nozzle 43 to which it supplies ink via an ink tube, the verticality of the connected ink tube is ensured, facilitating the rapid expulsion of air within the tube and ensuring smoother ink supply.

[0055] like Figure 2 As shown, the inkjet printing module 100 of this embodiment also includes a first mounting bracket 51 and a second mounting bracket 52, and the first mounting bracket 51 and the second mounting bracket 52 are respectively connected to the middle vertical plate 2, and the first mounting bracket 51 and the second mounting bracket 52 are respectively located on opposite sides of the middle vertical plate 2. The first mounting bracket 51 includes a horizontally arranged ink cartridge mounting plate 53 and two triangular support plates 53, and the two support plates are respectively connected to the mounting plate at opposite ends of the ink cartridge mounting plate 53. The triangular support plate 53 is a right-angled triangle support plate 53, and one right-angled side of the support plate 53 is connected to the mounting plate, and the other right-angled side is connected to the middle vertical plate 2. The above-mentioned structure can not only improve the rigidity and strength of the connection between the mounting plate and the middle vertical plate 2, but also leave space for installing the nozzle 43 through the hypotenuse of the support plate 53.

[0056] In order to accurately control the inkjet of the nozzle 43 , the inkjet printing module 100 of this embodiment further includes a nozzle driving circuit board 8 , which is electrically connected to the nozzle 43 and is mounted on the middle vertical plate 2 .

[0057] like Figure 2 and Figure 5 As shown, since this embodiment places the middle vertical plate 2 in the middle of the entire printing module and maintains a fixed distance from the nozzles 43 on the left and right sides, installing the nozzle 43 driver board in this position can make the connection between the nozzle 43 and the board more standardized and neat, and make it easier to operate the nozzle 43. At the same time, the nozzle 43 driver board generates a large amount of heat during operation. In this embodiment, by fixing the nozzle 43 driver board to the middle vertical plate 2, the heat emitted by the nozzle 43 driver board is quickly conducted away through the heat conduction of the middle vertical plate 2. To improve the heat conduction effect, the middle vertical plate 2 in this embodiment can be made of a metal vertical plate with good thermal conductivity.

[0058] like Figure 5 As shown, based on the technical solution of utilizing the heat conduction of the intermediate vertical plate 2 , the inkjet printing module 100 in this embodiment further includes a circulating water cooling pipeline 22 , at least a portion of which is embedded in the intermediate vertical plate 2 .

[0059] Circulating cold water is introduced into the circulating water cooling pipe 22. The cold water quickly absorbs the heat of the middle vertical plate 2 while flowing, which plays a role in quickly cooling the driving circuit board and greatly improves the working temperature inside the inkjet printing mold.

[0060] Example 2

[0061] like Figure 8 and Figure 10 As shown, this embodiment provides an inkjet printing device, including a sliding drive mechanism 200 and the inkjet printing module 100 described in Example 1. Figure 11 As shown, the inkjet printing device includes a sliding drive mechanism 200. In a specific implementation, the inkjet printing module 100 is suspended below the sliding drive mechanism 200 through the top plate 1. The inkjet printing module 100 can move in a direction perpendicular to the conveying direction of the printing medium 400 under the drive of the sliding drive mechanism 200.

[0062] Since the inkjet printing device in this embodiment suspends the inkjet printing module 100 below the sliding mechanism, and sets the bottom plate 3 on which the nozzle 43 is installed below the top plate 1, and then uses the vertically arranged middle plate 2 to connect the bottom plate 3 and the bottom plate 3, and the connection position is set in the middle of the top plate 1 and the middle of the bottom plate 3. In this way, the vibration can be filtered by the top plate 1, and the energy can be absorbed by the middle plate 2, thereby eliminating the resonance acting on the bottom plate 3. The stability of the bottom plate 3 on which the nozzle 43 is installed is ensured by utilizing the high strength of the aforementioned overall frame structure in the vertical direction, and the high torsion resistance of the aforementioned overall frame structure in the depth direction is utilized to effectively prevent the printing module from shaking during movement. After the nozzle 43 is installed on the base plate 3 of the aforementioned integral frame structure in this embodiment, the characteristics of the aforementioned integral frame structure, such as high upper and lower connection strength, good front-to-back stability, and weak force at positions farther away from the middle vertical plate 2 on both sides, can be fully utilized to effectively isolate low-frequency and large-scale vibrations, thereby avoiding the influence of the vibration of the printing module on the inkjet operation during the printing process, thereby significantly improving the stability of printing.

[0063] like Figure 12 As shown, the sliding drive mechanism 200 includes a sliding beam 210, and a ball screw 220 and a servo motor 230 are provided in the middle of the sliding beam 210, and the servo motor 230 drives the ball screw 220 to rotate. Linear guides are provided on both sides of the ball screw 220. The slider on the top plate 1 of the nozzle 43 printing module is slidably connected to the linear guide. A nut for use with the ball screw 220 is also installed on the top plate 1 of the nozzle 43 printing module. When the servo motor 230 drives the ball screw 220 to rotate, the ball screw 220 drives the nut to move along the axial direction of the ball screw 220, thereby making a linear movement relative to the sliding beam 210 under the constraints of the linear guides on both sides. In order to improve the overall rigidity and strength of the drive mechanism, this embodiment also provides a pair of triangular beam inclined plates 240 on the sliding beam 210.

[0064] The inkjet printing device of this embodiment further includes a print medium conveying system 300, which includes a first paper feed roller 310, a second paper feed roller 320, and a third paper feed roller 330, which are arranged in a sequential order along the paper feed sequence. Specifically, during the printing process, the first medium passes through the first paper feed roller 310, the second paper feed roller 320, and the third paper feed roller 330 in sequence.

[0065] For example Figure 8 As shown, the printing medium 400 is transported from the left side to the right side of the figure, and the first paper feed roller 310, the second paper feed roller 320 and the third paper feed roller 330 are arranged in sequence from left to right.

[0066] like Figure 9As shown, for ease of description, the portion of the printing medium 400 between the first paper feed roller 310 and the second paper feed roller 320 is referred to as the first printing section 410 , and the portion of the printing medium 400 between the second paper feed roller 320 and the third paper feed roller 330 is referred to as the second printing section 420 .

[0067] like Figure 8 and Figure 9 As shown, in this embodiment, the angle between the common tangent plane of the first and second feed rollers 310 and 320 and the common tangent plane of the second and third feed rollers 320 and 330 is less than 180 degrees. With this structure, the coordinated action of the first, second, and third feed rollers 310, 320, 330 creates a relative inclination between the first and second printing sections 410 and 420, thereby dividing the print medium 400 within the printing area into two mutually inclined sections. This prevents the formation of a long flat surface within the printing area, keeps the print medium 400 sufficiently taut within the printing area, and prevents wrinkles in the print medium 400.

[0068] like Figure 8 As shown, the common tangent plane of the first paper feed roller 310 and the second paper feed roller 320 is parallel to the first part 31 of the bottom plate 3 , and the common tangent plane of the second paper feed roller 320 and the third paper feed roller is parallel to the second part 32 of the bottom plate 3 .

[0069] The printing medium 400 between the first paper feed roller 310 and the second paper feed roller 320 is in a taut state and is located at a common tangent plane of the first paper feed roller 310 and the second paper feed roller 320. Therefore, this section of the printing medium 400 is parallel to the first portion 31 of the base plate 3 and parallel to the nozzle plane of the nozzle head 43 installed on the first portion 31. This ensures that the various nozzles of the nozzle head 43 installed on the first portion 31 print the first printing section 410 of the printing medium 400 with consistency and stability.

[0070] Similarly, the printing medium 400 between the second paper feed roller 320 and the third paper feed roller 330 is located at the common tangent plane of the second paper feed roller 320 and the third paper feed roller 330 in a taut state. Therefore, this section of the printing medium 400 is parallel to the second portion 32 of the base plate 3 and is parallel to the nozzle plane of the nozzle head 43 installed on the second portion 32. In this way, the consistency and stability of the printing of the second printing section 420 of the printing medium 400 by each nozzle of the nozzle head 43 installed on the second portion 32 can be guaranteed.

[0071] like Figure 5 As shown, in addition, in this embodiment, the first portion 31 and the second portion 32 are symmetrical about a first plane 91 in the vertical direction, and the first symmetry plane is located at the center of the middle vertical plate 2, as shown in FIG.Figure 9 As shown, the first paper feed roller 310 and the third paper feed roller 330 are symmetrical about the second plane 92 in the vertical direction, the axis of the second paper feed roller 320 is located on the second plane 92, and the second plane 92 coincides with the first plane 91.

[0072] In this embodiment, the overall frame structure consisting of the bottom plate 3, top plate 1, and middle vertical plate 2 is arranged symmetrically about a first plane 91. The aforementioned first plane 91 serves as the plane of symmetry for the middle vertical plate 2, while the first portion 31 and the second portion 32 of the bottom plate 3 are symmetrically arranged on either side of the first plane 91. Furthermore, in this embodiment, the first, second, and third paper feed rollers 310, 320, and 330 are also arranged in a planarly symmetrical manner, with their planes of symmetry being a plane passing through the axis of the second paper feed roller 320 and parallel to the vertical direction. Because the bottom plate 3 and the three paper feed rollers are all arranged in a planarly symmetrical manner, and their planes of symmetry coincide, the distance between the nozzle plane of the printhead 43 mounted on the first portion 31 and the first printing section 410 of the print medium 400 is uniform throughout, and is also equal to the distance between the nozzle plane of the printhead 43 mounted on the second portion 32 and the second printing section 420 of the print medium 400. This ensures accurate registration between the printing of the first and second printing sections.

[0073] like Figure 8 and Figure 9 As shown, the printing medium 400 conveying system of this embodiment further includes a fourth feed roller 340 and a fifth feed roller 350. The fourth feed roller 340 is located on the side of the first feed roller 310 away from the second feed roller 320, and the fifth feed roller 350 is located on the side of the third feed roller 330 away from the second feed roller 320. That is, during the printing process, the first medium passes through the fourth feed roller 340, the first feed roller 310, the second feed roller 320, the third feed roller 330, and the fifth feed roller 350 in sequence. The angle between the common tangent plane between the fourth feed roller 340 and the first feed roller 310 and the common tangent plane between the first feed roller 310 and the second feed roller 320 is less than 180 degrees, and the angle between the common tangent plane between the fifth feed roller 350 and the third feed roller 330 and the common tangent plane between the second feed roller 320 and the third feed roller 330 is less than 180 degrees. The above structure can effectively prevent the flexible printing medium 400 from wrinkling during the inkjet printing process.

[0074] The above description is only a specific embodiment of the present invention. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. Inkjet printing module, characterized in that: The inkjet printing module is suspended below the sliding drive mechanism of the inkjet printing device, and the inkjet printing module includes: a horizontally arranged top plate, the top plate being slidably connected to the sliding drive mechanism; A vertically arranged middle vertical plate, one end of which is connected to the top plate in the middle of the top plate; a bottom plate, located below the top plate, wherein a middle portion of the bottom plate is connected to an end of the intermediate vertical plate away from the top plate, the bottom plate comprising a first portion and a second portion, the first portion and the second portion being located on opposite sides of the intermediate vertical plate, respectively; A nozzle assembly is mounted on the base plate, wherein the nozzle assembly includes a nozzle; an ink cartridge connected to the nozzle via an ink path; The top plate, the middle vertical plate, and the first portion form a semi-enclosed first accommodating chamber, and the top plate, the middle vertical plate, and the second portion form a second accommodating chamber. The first accommodating chamber and the second accommodating chamber have openings in opposite directions, and the ink cartridge is located in the first accommodating chamber and / or the second accommodating chamber. The nozzle assembly includes a first nozzle group and a second nozzle group, wherein the first nozzle group and the second nozzle group are respectively located on opposite sides of the middle vertical plate; The first nozzle group includes at least one inkjet unit for printing a first color ink, at least one inkjet unit for printing a second color ink, at least one inkjet unit for printing a third color ink, and at least one inkjet unit for printing a fourth color ink; It also includes a nozzle drive circuit board, which is electrically connected to the nozzle and is mounted on the middle vertical plate.

2. The inkjet printing module according to claim 1, characterized in that: The first portion and the second portion are both flat-plate shaped, and an angle between the first portion and the second portion is less than 180 degrees.

3. The inkjet printing module according to claim 1, characterized in that: The ink cartridge is located above the corresponding ink supply nozzle group.

4. The inkjet printing module according to claim 3, characterized in that: It also includes a circulating water cooling pipeline, at least a portion of which is embedded in the middle vertical plate.

5. The inkjet printing module according to any one of claims 1 to 4, characterized in that: It also includes two lower inclined plates, which are respectively located at the opposite ends of the middle vertical plate. The lower inclined plates include a first oblique side, a second oblique side and a bottom side. One end of the bottom side is connected to the first oblique side, and the other opposite end is connected to the second oblique side. The bottom side abuts against the upper surface of the base plate.

6. Inkjet printing equipment, characterized in that: The invention comprises a sliding drive mechanism and the inkjet printing module according to any one of claims 1 to 5.

7. The inkjet printing device according to claim 6, wherein: It also includes a first paper feed roller, a second paper feed roller and a third paper feed roller which are arranged in sequence along the paper feeding order. The common tangent plane of the first paper feed roller and the second paper feed roller is parallel to the first part of the bottom plate, and the common tangent plane of the second paper feed roller and the third paper feed roller is parallel to the second part of the bottom plate.

8. The inkjet printing device according to claim 7, wherein: The first part and the second part are symmetrical about a first plane in the vertical direction, the first plane is located at the center of the middle vertical plate, the first paper feed roller and the third paper feed roller are symmetrical about a second plane in the vertical direction, the axis of the second paper feed roller is located on the second plane, the second plane coincides with the first plane, and the angle between the common tangent plane of the first paper feed roller and the second paper feed roller and the common tangent plane of the second paper feed roller and the third paper feed roller is less than 180 degrees.

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