Liquid ejection device having mounting slot and substrate for liquid ejection device
Patent Information
- Application Number
- CN202522469764.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-11-21
AI Technical Summary
[0002]现有的液体喷射装置包括衬底、具有多个喷嘴的喷射部、用于对喷射部形成支撑的上层支撑件和下层支撑件，在组装时，需先将上层支撑件安装至衬底，然后将喷射部安装至上层支撑件上，再安装将喷射部抵持于上层支撑件的下层支撑件，使喷射部夹设于上层支撑件和下层支撑件之间，喷射部组装步骤比较繁琐，生产效率低下，且当喷射部损坏时，上层支撑件和下层支撑件无法得到有效回收利用，导致生产材料的浪费
衬底至少被配置为提供为所述喷嘴供应液体的连续液体流道和为所述喷射部提供安装定位和支撑，所述衬底的至少一个外表面朝向所述连续液体流道凹设有安装所述喷射部的安装槽，所述安装槽与所述连续液体流道连通。喷射部直接安装于衬底的安装槽，无需借助额外的支撑件或保持件将喷射部与衬底连接，省去组装支撑件或保持件的步骤，简化喷射部的组装步骤，提高组装效率，避免因支撑件或保持件无法回收利用带来的生产原料浪费的问题，节省生产成本。
Smart Images
Figure CN224810311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid jetting technology, and in particular to a liquid jetting device with a mounting groove and a substrate for the liquid jetting device. Background Technology
[0002] Existing liquid jetting devices include a substrate, a jetting section with multiple nozzles, an upper support, and a lower support for supporting the jetting section. During assembly, the upper support must first be installed onto the substrate, then the jetting section is installed onto the upper support, and finally the lower support is installed to hold the jetting section against the upper support, so that the jetting section is sandwiched between the upper and lower supports. The assembly steps of the jetting section are cumbersome and have low production efficiency. Furthermore, when the jetting section is damaged, the upper and lower supports cannot be effectively recycled, resulting in waste of production materials. Utility Model Content
[0003] This invention addresses the problems existing in the prior art by providing a liquid jetting device with a mounting groove and a substrate for the liquid jetting device. The jetting part is directly mounted in the mounting groove of the substrate, eliminating the need for additional support or retaining members to connect the jetting part to the substrate, thereby improving assembly efficiency and saving production costs.
[0004] In a first aspect, the present invention provides a liquid jetting device with a mounting groove, comprising: a jetting part including a plurality of nozzles; a substrate configured to at least provide a continuous liquid flow channel for supplying liquid to the nozzles and to provide mounting positioning and support for the jetting part, wherein at least one outer surface of the substrate is recessed toward the continuous liquid flow channel to mount the jetting part, and the mounting groove is in communication with the continuous liquid flow channel.
[0005] In one embodiment, the substrate includes a first substrate and a second substrate. The first substrate has a first bonding surface and a first open cavity. The second substrate has a second bonding surface and a second open cavity. The first substrate and the second substrate are detachably connected. The first bonding surface is in contact with the second bonding surface. The first open cavity and the second open cavity are aligned and spliced to form the continuous liquid flow channel.
[0006] In one embodiment, the first substrate is provided with a first connection hole, the second substrate is provided with a second connection hole, and the first connection hole and the second connection hole are connected by a connector; And / or, the surfaces where the first substrate and the second substrate are joined are filled with adhesive material.
[0007] In one embodiment, a plurality of nozzles are spaced apart and arranged in at least one row along a first direction, and the first substrate and the second substrate are spliced and fixed along a second direction, the second direction intersecting the first direction; The inlet end of the continuous liquid flow channel is formed on the first substrate, and the mounting groove is disposed on the second substrate.
[0008] In one embodiment, the first open mouth body includes a first cavity that extends continuously along a first direction, and the second open mouth body includes a second cavity that extends continuously along the first direction and a connecting groove located between the second cavity and the mounting groove. The first cavity and the second cavity are spliced together along a second direction to form a common cavity, and the common cavity, the connecting groove, and the mounting groove are sequentially connected along the second direction.
[0009] In one embodiment, a stop step is formed between the connecting groove and the mounting groove, and the stop step is configured to restrict the movement of the spray section toward one side of the connecting groove.
[0010] In one embodiment, the common cavity has a first end face and a second end face spaced apart, and an extension segment extending continuously from the first end face to the second end face. The cross-sectional profile of the extension segment is circular, and the first end face and the second end face are hemispherical.
[0011] In one embodiment, the projections of the center lines of the mounting groove in the first direction, the first cavity in the first direction, the second cavity in the first direction, the connecting groove in the first direction, the first substrate in the first direction, and the second substrate in the first direction in the second direction coincide in the second direction.
[0012] In one embodiment, a plurality of the nozzles are arranged along a first direction and at least in a row, the second direction intersects the first direction, the nozzles are configured to spray liquid along the second direction, and the continuous liquid flow channel includes a liquid inlet channel extending along the second direction, a common cavity extending continuously along the first direction, a connecting groove, and the mounting groove, which are sequentially arranged and connected along the second direction.
[0013] Secondly, the present invention also provides a substrate for a liquid jetting device, which is at least configured to provide a continuous liquid flow channel and to provide mounting positioning and support for the jetting part, comprising: the substrate having a continuous liquid flow channel, and at least one outer surface of the substrate having a mounting groove for mounting the jetting part recessed toward the continuous liquid flow channel, the mounting groove communicating with the continuous liquid flow channel.
[0014] By adopting the above structure, this utility model has the following advantages compared with the prior art: The substrate is configured to provide a continuous liquid flow channel for supplying liquid to the nozzle and to provide mounting positioning and support for the jetting part. At least one outer surface of the substrate is recessed into the continuous liquid flow channel, and the mounting groove communicates with the continuous liquid flow channel. The jetting part is directly mounted in the mounting groove of the substrate, eliminating the need for additional supports or holders to connect the jetting part to the substrate. This eliminates the need for assembling supports or holders, simplifies the assembly process of the jetting part, improves assembly efficiency, avoids the waste of production materials due to the non-recyclability of supports or holders, and saves production costs. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of a liquid jetting device with an installation groove according to an embodiment of this application; Figure 2 for Figure 1 A three-dimensional structural diagram omitting the outer shell; Figure 3 for Figure 2 Top view; Figure 4 for Figure 3 A cross-sectional view along the AA direction; Figure 5 for Figure 3 A cross-sectional view along the BB direction; Figure 6 This is a three-dimensional structural diagram of the substrate according to an embodiment of this application; Figure 7 This is a three-dimensional structural schematic diagram of the first substrate according to an embodiment of this application; Figure 8 This is a three-dimensional structural schematic diagram of the second substrate according to an embodiment of this application; Figure 9 for Figure 8 A three-dimensional structural diagram of the second substrate from another angle. In the attached figures: substrate 1; outer surface 10; first substrate 1a; second substrate 1b; first open cavity 11; first cavity 111; liquid inlet channel 112; liquid outlet channel 113; second open cavity 12; second cavity 121; connecting groove 122; strip hole 123; mounting groove 13; stop step 131; common cavity 14; first mating surface 15; second mating surface 16; first connecting hole 17; second connecting hole 18; spray section 2; nozzle 21; outer shell 3; liquid spraying device 100. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0017] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0018] Example 1
[0019] like Figure 1-9 As shown, this application embodiment provides a liquid jetting device 100 with a mounting groove 13, including: a jetting part 2 including a plurality of nozzles 21; a substrate 1, which is at least configured to provide a continuous liquid flow channel for supplying liquid to the nozzles 21 and to provide mounting positioning and support for the jetting part 2, wherein at least one outer surface 10 of the substrate 1 is recessed toward the continuous liquid flow channel to form a mounting groove 13 for mounting the jetting part 2, and the mounting groove 13 is in communication with the continuous liquid flow channel.
[0020] During assembly, the jetting part 2 is directly installed in the mounting groove 13 of the substrate 1 without the need for additional support or retainer to connect the jetting part 2 to the substrate 1. This eliminates the need for assembling support or retainer, simplifies the assembly process of the jetting part 2, improves assembly efficiency, avoids the waste of production materials caused by the non-recyclability of support or retainer, and saves production costs.
[0021] The substrate 1 of this invention can be made of corrosion-resistant polymer materials (such as photoresist, polyamide, polyimide, polybenzoxazole, etc.), glass, ceramics, metals, metal nitrides, or metal oxides, etc., and manufactured using CNC precision machining, laser cutting, stamping, laser micromachining, and other processing technologies. Suitable metals include copper and copper alloys, nickel and nickel-based alloys, aluminum and aluminum alloys, titanium and titanium alloys, cobalt-chromium alloys, stainless steel, etc.; or it can be made of semiconductors (such as silicon, germanium, etc.), dielectric materials, metals, metal nitrides, metal oxides, glass, ceramics, polymer materials, etc., and manufactured using semiconductor or micro / nano processing technologies such as photolithography, deep etching, and laser micromachining. Appropriate materials are selected based on the performance requirements of the substrate 1, and appropriate processing technologies are selected based on the materials.
[0022] The jetting section 2 is a component from which liquid is ejected from the nozzle 21. As a specific example, the jetting section 2 can be a microporous structure with multiple nozzles 21, excluding the actuators mentioned below. In a preferred embodiment, the jetting section 2 can be a nozzle plate structure. The jetting section 2 can be made of corrosion-resistant metal materials such as copper and copper alloys, nickel and nickel-based alloys, aluminum and aluminum alloys, titanium and titanium alloys, cobalt-chromium alloys, and stainless steel, or polymer materials such as polyamide, polyimide, epoxy resin, and photoresist, or ceramics or glass. The nozzles 21 and other precision structures are processed using CNC precision machining, laser drilling, electroforming, stamping, photolithography, etching, etc. Alternatively, the jetting section 2 can be made of semiconductors (such as silicon, germanium, etc.), dielectric materials, metals, metal nitrides, metal oxides, glass, ceramics, polymer materials, etc., and the nozzles 21 and other precision structures are manufactured using semiconductor or micro-nano processing technologies such as photolithography, etching, and laser micromachining. The appropriate processing technology is chosen based on the material selection of the jetting section 2. As another specific example, the jetting section 2 can be a microelectronic device manufactured based on semiconductor technology. The jetting section 2 includes a nozzle layer 21 with multiple nozzles 21 and an actuator coupled to the nozzles 21 to eject liquid droplets. The liquid jetting device 100 of this invention may or may not include an actuator, depending on actual needs. The liquid jetting device 100 and the modular substrate 1 are applicable not only to on-demand inkjet printing but also to other liquid jetting systems such as continuous inkjet printing. The jetting section 2 can be fixed in the mounting groove 13 by processes such as adhesive bonding, glass powder encapsulation, brazing, diffusion bonding, and bonding. The appropriate process can be selected according to the materials of the substrate 1 and the jetting section 2, the requirements for connection performance, and production requirements.
[0023] Furthermore, such as Figure 4-5 As shown in Figures 7-9, a plurality of nozzles 21 are arranged along a first direction x and at least in a row. The nozzles 21 are configured to spray liquid along a second direction z, which intersects with the first direction x. The continuous liquid flow channel includes a liquid inlet channel 112 extending along the second direction z, a common cavity 14 continuously extending along the first direction x, a connecting groove 122, and a mounting groove 13, which are sequentially arranged and connected along the second direction z. The structure of the continuous liquid flow channel is simplified. The liquid flows from the common cavity 14 along the second direction z to the nozzles 21 without any bends, minimizing the flow path of the liquid on the substrate 1, reducing pressure loss along the flow path and the generation of bubbles, which is beneficial for the stable liquid spraying by the nozzles 21.
[0024] Furthermore, such as Figure 4-8As shown, substrate 1 can be a modular structure. Specifically, substrate 1 includes a first substrate 1a and a second substrate 1b. The first substrate 1a has a first bonding surface 15, and the first bonding surface 15 is provided with a first open cavity 11. The second substrate 1b has a second bonding surface 16, and the second bonding surface 16 is provided with a second open cavity 12. The first substrate 1a and the second substrate 1b are detachably connected. The first bonding surface 15 is attached to the second bonding surface 16. The first open cavity 11 and the second open cavity 12 are aligned and spliced to form the continuous liquid flow channel. The first substrate 1a and the second substrate 1b are processed and formed separately, and then assembled into a whole to form the substrate 1. The continuous liquid flow channel is connected by the first open cavity body 11 and the second open cavity body 12 along the splicing direction. Compared with the existing one-piece structure substrate 1, it is easier to process or form the first open cavity body 11 and the second open cavity body 12 separately, which can meet the processing requirements of complex, specific shapes and sizes of continuous liquid flow channels, reduce the maintenance difficulty and cost of continuous liquid flow channels, and the first substrate 1a and the second substrate 1b can be disassembled and assembled, which is conducive to the later recycling of the first substrate 1a and the second substrate 1b.
[0025] In other examples, the substrate 1 can also be a one-piece structure without splicing. During processing, the mounting groove 13, the connecting groove 122 mentioned below, and the common cavity 14 can be sequentially processed from the outer surface 10 of the substrate 1. The liquid inlet channel 112 and the liquid outlet channel 112 mentioned below can be processed from the other surface opposite to the outer surface 10.
[0026] Specifically, to achieve the splicing of the first substrate 1a and the second substrate 1b into a single unit, as an example, such as Figure 7-9As shown, the first substrate 1a has a first connecting hole 17, and the second substrate 1b has a second connecting hole 18. The first connecting hole 17 and the second connecting hole 18 are connected by a connector (not shown). Specifically, the connector can be a detachable fastener such as a bolt, stud, screw, or pin. The second connecting hole 18 is a through hole that penetrates the thickness direction of the second substrate 1b. Preferably, there can be multiple first connecting holes 17 evenly distributed on the first mating surface 15, and similarly, there can be multiple second connecting holes 18 evenly distributed on the second mating surface 16. To avoid affecting the formation of the first open cavity 11 on the first substrate 1a and the second open cavity 12 on the second substrate 1b, the first connecting holes 17 and the second connecting holes 18 are correspondingly distributed at the corners of the first mating surface 15 and the second mating surface 16. Preferably, to improve connection reliability, in addition to the connection of the first substrate 1a and the second substrate 1b via a connector, an adhesive material is provided between the first mating surface 15 and the second mating surface 16 to ensure the sealing of the connection between the first substrate 1a and the second substrate 1b, preventing liquid leakage and impurities from entering the interior of the substrate 1. Besides the connection methods described above, the first substrate 1a and the second substrate 1b can also be assembled into a whole using detachable connection methods such as magnetic connection, clamping, or snap-fit. Specific connection methods and structures are existing technologies and will not be elaborated here.
[0027] To achieve the splicing of the first substrate 1a and the second substrate 1b, the first substrate 1a and the second substrate 1b can be spliced along a first direction x, a second direction z, or a third direction y. The second direction z intersects the first direction x, and the third direction y intersects the first direction x and the second direction z, respectively. When the liquid jetting device 100... Figure 4 The placement can be in the following directions: the first direction x can be horizontal, the length of the substrate 1, or the arrangement of multiple nozzles 21 in a row; the second direction z can be as follows. Figure 4The vertical direction shown can also be the height direction of substrate 1. The vertical direction includes both vertically downward and inclined downward. For example, if the direction of liquid spraying from nozzle 21 is inclined downward or vertically downward, the splicing direction of the first substrate 1a and the second substrate 1b can be vertically downward or inclined downward. The third direction y can be longitudinal or the width direction of substrate 1. The splicing direction of the first substrate 1a and the second substrate 1b can be selected and designed according to actual needs. Correspondingly, the specific structure of the first open cavity 11 and the second open cavity 12 is adjusted according to the splicing direction. The relationship between the vertical, lateral, and longitudinal directions and the spraying direction of nozzle 21 is related to the placement of the liquid spraying device 100. When the first substrate 1a and the second substrate 1b are spliced along the second direction z or the third direction y, the mounting groove 13 can be formed jointly by the first substrate 1a and the second substrate 1b. That is, the first mating surface 15 has a first groove segment communicating with the first open cavity body 11, and the second mating surface 16 has a second groove segment communicating with the second open cavity body 12. The first mating surface 15 and the second mating surface 16 are fitted together, and the first groove segment and the second groove segment are aligned and spliced together to form the mounting groove 13. The first mating surface 15 and the second mating surface 16 can be a plane, an inclined surface, a stepped surface, or a curved surface with recesses and / or protrusions. To ensure alignment, splicing, and sealing at the joint, the shapes of the first mating surface 15 and the second mating surface 16 are perfectly matched, and the two are completely fitted together.
[0028] Furthermore, such as Figure 3-5 As shown, a plurality of nozzles 21 are spaced apart and arranged in at least one row along a first direction x. The first substrate 1a and the second substrate 1b are spliced and fixed along a second direction z, which intersects with the first direction x. The liquid inlet end of the continuous liquid flow channel is formed on the first substrate 1a, and the mounting groove 13 is provided on the second substrate 1b. To facilitate the installation of the spraying part 2, the spraying part 2 can be installed on the second substrate 1b, and then the first substrate 1a and the second substrate 1b can be spliced and fixed.
[0029] Furthermore, such as Figure 4-5As shown in Figures 7-9, the first open cavity 11 includes a first cavity 111 extending continuously along a first direction x, and the second open cavity 12 includes a second cavity 121 extending continuously along the first direction x and a connecting groove 122 located between the second cavity 121 and the mounting groove 13. The first cavity 111 and the second cavity 121 are spliced along a second direction z to form a common cavity 14. The common cavity 14, the connecting groove 122, and the mounting groove 13 are sequentially connected along the second direction z. Compared to a single integrally formed common cavity 14, the common cavity 14 is formed by connecting the first cavity 111 of the first substrate 1a and the second cavity 121 of the second substrate 1b. The first cavity 111 and the second cavity 121 are processed or formed separately, which facilitates the processing of the common cavity 14 with the required cross-sectional contour shape and size, and also facilitates the maintenance of the common cavity 14. Preferably, based on this, the projections of the six elements—the centerline of the mounting groove 13 in the first direction x, the centerline of the first cavity 111 in the first direction x, the centerline of the second cavity 121 in the first direction x, the centerline of the connecting groove 122 in the first direction x, the centerline of the first substrate 1a in the first direction x, and the centerline of the second substrate 1b in the first direction x—on the second direction z coincide. This is beneficial for improving the assembly accuracy of the substrate 1 and reducing the processing difficulty, and for facilitating smooth liquid flow within the continuous liquid channel. In other examples, the projections of the common cavity 14 and the centerline of the mounting groove 13 in the first direction x on the second direction z can be staggered. To achieve this, optionally, the connecting groove 122 includes a first connecting groove extending along the first direction x and a second connecting groove for connecting the first connecting groove and the mounting groove 13 along the second direction z.
[0030] Furthermore, such as Figure 5 , 8 As shown, the second cavity 121 has a strip-shaped hole 123 that communicates with the connecting groove 122. The connection between the connecting groove 122 and the first cavity 111 is a smooth connection, which helps to improve the smoothness of liquid flow through the connection between the connecting groove 122 and the second cavity 121 and reduce the generation and retention of bubbles.
[0031] Furthermore, such as Figure 4 As shown, the first open mouth body 11 includes a liquid inlet channel 112 communicating with the first cavity 111. The connection between the liquid inlet channel 112 and the first cavity 111 is a smooth connection, ensuring the smooth flow of liquid through the connection between the liquid inlet channel 112 and the first cavity 111, and reducing the generation and retention of air bubbles. Further, as... Figure 4As shown, the first open mouth body 11 includes a drainage channel 113 communicating with the first cavity 111. The inlet channel 112 and the drainage channel 113 are spaced apart, and the inner wall of the drainage channel 113 is smoothly connected to the inner wall of the first cavity 111. This allows the liquid to flow more smoothly through the connection between the drainage channel 113 and the first cavity 111, reducing the generation and retention of air bubbles.
[0032] Furthermore, such as Figure 4 , 5 As shown, a stop step 131 is formed between the connecting groove 122 and the mounting groove 13. The stop step 131 is configured to restrict the movement of the spraying part 2 toward one side of the connecting groove 122.
[0033] Furthermore, such as Figure 4 and 5 As shown, the common cavity 14 has a first end face 141 and a second end face 142 spaced apart, and an extension segment 143 continuously extending from the first end face 141 to the second end face 142. The cross-sectional profile of the extension segment 143 is circular, and the first end face 141 and the second end face 142 are hemispherical. The inner wall of the common cavity 14 is smooth, without sharp corners or recesses, which reduces turbulence generated by liquid flow, reduces the generation of bubbles and the retention of impurities, and improves the smoothness of liquid flow. This is beneficial for the nozzle 21 to stably spray liquid, reduces the risk of nozzle 21 clogging, and improves the reliability and stability of spraying.
[0034] Furthermore, such as Figure 1 As shown, the liquid jetting device 100 also includes a housing 3 covering the substrate 1. The housing 3 includes a first housing and a second housing, which are joined together to form a receiving cavity for accommodating the substrate 1. The housing 3 protects and restricts the separation of the first substrate 1a and the second substrate 1b. The first housing and the second housing can be connected to the substrate 1 via connectors, referring to the connection method of the first substrate 1a and the second substrate 1b. Alternatively, the first housing and the second housing may have a connecting part for connection and fixation between them.
[0035] Example 2
[0036] like Figure 2-9As shown, this application embodiment also provides a substrate 1 for a liquid jetting device 100, which is at least configured to provide a continuous liquid flow channel and to provide mounting positioning and support for the jetting part 2. The substrate 1 is the substrate 1 described in Embodiment 1, the substrate 1 has a continuous liquid flow channel, and at least one outer surface 10 of the substrate 1 is recessed towards the continuous liquid flow channel with a mounting groove 13 for mounting the jetting part 2, the mounting groove 13 communicating with the continuous liquid flow channel. During assembly, the jetting part 2 is directly mounted in the mounting groove 13 of the substrate 1, without the need for additional supports or holders to connect the jetting part 2 to the substrate 1. This eliminates the need for assembling supports or holders, simplifies the assembly process of the jetting part 2, improves assembly efficiency, avoids the waste of production materials due to the non-recyclability of supports or holders, and saves production costs. The specific structure of the substrate 1 and its connection relationship with the jetting part 2 are as described in Embodiment 1, and will not be repeated here.
[0037] Although embodiments of the present invention have been shown and described above, they should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of the present invention are within the scope of protection of the present invention.
Claims
1. A liquid injection device having a mounting groove, characterized in that, include: The injection section includes multiple nozzles; A substrate, configured to provide a continuous liquid flow channel for supplying liquid to the nozzle and to provide mounting positioning and support for the jet, wherein at least one outer surface of the substrate is recessed toward the continuous liquid flow channel to mount the jet, the mounting groove being in communication with the continuous liquid flow channel.
2. The liquid injection device with a mounting groove as described in claim 1, characterized in that, The substrate includes a first substrate and a second substrate. The first substrate has a first bonding surface and a first open cavity. The second substrate has a second bonding surface and a second open cavity. The first substrate and the second substrate are detachably connected. The first bonding surface is attached to the second bonding surface. The first open cavity and the second open cavity are aligned and spliced to form the continuous liquid flow channel.
3. The liquid injection device with an installation groove as described in claim 2, characterized in that, The first substrate has a first connection hole, and the second substrate has a second connection hole. The first connection hole and the second connection hole are connected by a connector. And / or, the surfaces where the first substrate and the second substrate are joined are filled with adhesive material.
4. The liquid injection device with an installation groove as described in claim 2, characterized in that, The plurality of nozzles are spaced apart along a first direction and arranged in at least one row, and the first substrate and the second substrate are spliced and fixed along a second direction, the second direction intersecting the first direction; The inlet end of the continuous liquid flow channel is formed on the first substrate, and the mounting groove is disposed on the second substrate.
5. The liquid injection device with an installation groove as described in claim 4, characterized in that, The first open mouth body includes a first cavity that extends continuously along a first direction, and the second open mouth body includes a second cavity that extends continuously along the first direction and a connecting groove located between the second cavity and the mounting groove. The first cavity and the second cavity are spliced together along a second direction to form a common cavity, and the common cavity, the connecting groove, and the mounting groove are connected sequentially along the second direction.
6. The liquid injection device with a mounting groove as described in claim 5, characterized in that, A stop step is formed between the connecting groove and the mounting groove, and the stop step is configured to restrict the movement of the spray section toward one side of the connecting groove.
7. The liquid injection device with a mounting groove as described in claim 5, characterized in that, The common cavity has a first end face and a second end face spaced apart, and an extension segment that extends continuously from the first end face to the second end face. The cross-sectional profile of the extension segment is circular, and the first end face and the second end face are hemispherical.
8. The liquid injection device with a mounting groove as described in claim 5, characterized in that, The projections of the six elements—the centerline of the mounting groove in the first direction, the centerline of the first cavity in the first direction, the centerline of the second cavity in the first direction, the centerline of the connecting groove in the first direction, the centerline of the first substrate in the first direction, and the centerline of the second substrate in the first direction—coincide in the second direction.
9. The liquid injection device with a mounting groove as described in claim 1, characterized in that, The plurality of nozzles are arranged along a first direction and at least in a row. The nozzles are configured to spray liquid along a second direction, which intersects the first direction. The continuous liquid flow channel includes a liquid inlet channel extending along the second direction, a common cavity extending continuously along the first direction, a connecting groove, and the mounting groove, which are sequentially arranged and connected along the second direction.
10. A substrate for a liquid jetting device, configured at least to provide a continuous liquid flow path and to provide mounting positioning and support for the jetting section, characterized in that, include: The substrate is the substrate according to any one of claims 1-9, the substrate is provided with a continuous liquid flow channel, and at least one outer surface of the substrate is recessed with a mounting groove for mounting the jet portion facing the continuous liquid flow channel, the mounting groove being in communication with the continuous liquid flow channel.