Spray head fixing device, spray head assembly and ink jet device

Abstract

The utility model provides a nozzle fixing device, a nozzle assembly and an ink jet device. The spray head fixing device comprises a concave fixing frame and a spray head fixing assembly used for fixing a spray head. Wherein the concave fixing frame comprises a fixing bottom plate, a first side plate and a second side plate; the nozzle fixing assembly comprises a nozzle fixing plate, a nozzle side pressing plate and a nozzle bottom pressing plate; at least one through groove is formed in the bottom surface of the spray head fixing plate; the through groove is used for accommodating the hanging lug on the metal sheet; the spray head fixing plate is fixed to the ends, away from the fixing bottom plate, of the first side plate and the second side plate in the mode of being parallel to the fixing bottom plate. The nozzle side pressing plate is fixed to the first side face of the nozzle fixing plate. The nozzle bottom pressing plate is fixed to the bottom face of the nozzle fixing plate, and after the hanging lugs are inserted into the through grooves in the mode that the protruding parts are away from the nozzle side pressing plates, the protruding parts are covered with the nozzle bottom pressing plate. The spray head fixing device, the spray head assembly and the ink jetting device are used for fixing the printing and dyeing spray head, and the printing and dyeing quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of inkjet printing and dyeing, and in particular to a nozzle fixing device, a nozzle assembly and an inkjet device. Background Art

[0002] During the processing of fabrics, dyeing or spraying is often required. Traditional textile printing and dyeing technology involves placing the grey fabric in a dyeing tank for dyeing, followed by multiple soaking and washing steps. Therefore, the water-saving and waterless printing and dyeing technology for textiles is an inevitable trend in current development.

[0003] At present, textiles produced by conventional dip-dyeing and pad-dyeing techniques undergo multiple dips and washes. Existing nozzles for spray-dyeing are not only complicated to install, but also have a small output after installation and limited viscosity of the sprayed liquid, resulting in low printing and dyeing quality. Utility Model Content

[0004] In view of this, the present application provides a nozzle fixing device, a nozzle assembly and an inkjet device, which are used to fix the printing and dyeing nozzle to ensure the quality of printing and dyeing.

[0005] Specifically, the present application is implemented through the following technical solutions:

[0006] The first aspect of the present application provides a nozzle fixing device, which includes a concave fixing frame and a nozzle fixing assembly for fixing the nozzle; wherein,

[0007] The concave fixing frame comprises a fixing bottom plate, a first side plate and a second side plate; the first side plate and the second side plate are perpendicular to the fixing bottom plate, and the first side plate and the second side plate are opposite to each other;

[0008] The nozzle fixing assembly includes a nozzle fixing plate, a nozzle side pressure plate and a nozzle bottom pressure plate;

[0009] The bottom surface of the nozzle fixing plate is provided with at least one through groove; the through groove runs through the nozzle fixing plate in the width direction; the length of the through groove in the length direction of the nozzle fixing plate is the same as the thickness of the metal sheet of the nozzle, and the through groove is used to accommodate the hanging ear on the metal sheet;

[0010] The nozzle fixing plate is fixed to the first side plate and the second side plate at one end away from the fixing bottom plate in a manner parallel to the fixing bottom plate;

[0011] The nozzle side pressure plate is fixed on the first side surface of the nozzle fixing plate; wherein the first side surface is any one of the two side surfaces of the nozzle fixing plate along the width direction;

[0012] The nozzle bottom pressure plate is fixed on the bottom surface of the nozzle fixing plate so that after the hanging ear is inserted into the through groove in a manner that the protrusion is away from the nozzle side pressure plate, the nozzle bottom pressure plate covers the protrusion.

[0013] Optionally, the concave fixing frame is an integrally formed fixing frame;

[0014] or,

[0015] The fixed bottom plate, the first side plate and the second side plate are independent plates; the fixed bottom plate, the first side plate and the second side plate are assembled together by bolts.

[0016] Optionally, the nozzle fixing plate has a plurality of through slots; and the distance between two adjacent through slots is the same.

[0017] Optionally, the first side plate and the second side plate have a contoured hole at one end away from the fixed bottom plate;

[0018] The nozzle fixing plate has an inserting portion matched with the profiling hole; the nozzle fixing plate is fixed on the first side plate and the second side plate in a manner that the inserting portion is inserted into the profiling hole.

[0019] Optionally, the angle between the bottom surface of the nozzle fixing plate and the horizontal direction is 0° to 360°.

[0020] Optionally, the concave fixing frame is a metal fixing frame.

[0021] Optionally, the nozzle fixing assembly is made of metal material.

[0022] Optionally, the nozzle fixing plate has 20 through slots, and the spacing between two adjacent through slots is the same.

[0023] The second aspect of the present application provides a nozzle assembly, wherein the nozzle comprises any nozzle fixing device provided in the first aspect of the present application, and at least one nozzle fixed on the nozzle fixing device; wherein:

[0024] The nozzle comprises a metal sheet, a nozzle needle and a piezoelectric resonator;

[0025] The metal sheet has a hanging ear, and the spray needle is fixed on an end of the metal sheet away from the hanging ear in a manner parallel to the metal sheet;

[0026] The piezoelectric resonator is located on the side of the metal sheet; the piezoelectric resonator is used to drive the metal sheet to vibrate under the control of a driving electrical signal, so as to vibrate the spray needle and vibrate the liquid in the spray needle out.

[0027] A third aspect of the present application provides an inkjet device, which includes at least one nozzle assembly provided in the second aspect of the present application.

[0028] The nozzle fixing device, nozzle assembly and inkjet device provided by the present application form a structure for placing the nozzle assembly through a concave fixing frame, and then accommodate the hanging ears on the metal sheet through the through grooves on the bottom surface of the nozzle fixing plate, and then fix the installed nozzle through the nozzle side pressure plate and the nozzle bottom pressure plate. In this way, the nozzle can be fixed simply and conveniently by fixing the nozzle through the nozzle side pressure plate and the nozzle bottom pressure plate, thereby improving the efficiency of nozzle fixing. In this way, since the effect of nozzle fixing is guaranteed, the quality of printing can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A A schematic diagram of a nozzle fixing device shown as an exemplary embodiment of the present application;

[0030] Figure 1B An exploded view of a nozzle fixing device shown as an exemplary embodiment of the present application;

[0031] Figure 1C A schematic diagram of a nozzle fixing device shown as another exemplary embodiment of the present application;

[0032] Figure 2 A schematic diagram of a concave fixing frame according to an exemplary embodiment of the present application;

[0033] Figure 3 A schematic diagram of a nozzle fixing plate shown as an exemplary embodiment of the present application;

[0034] Figure 4 A front view of a nozzle shown as an exemplary embodiment of the present application;

[0035] Figure 5 A left side view of a nozzle shown as an exemplary embodiment of the present application;

[0036] Figure 6 An assembly diagram of a nozzle fixing device shown as an exemplary embodiment of the present application;

[0037] Figure 7 An assembly diagram of a spray head fixing device showing another exemplary embodiment of the present application.

[0038] Description of reference numerals:

[0039] 1: Concave fixing bracket;

[0040] 2: Nozzle fixing assembly;

[0041] 11: Fix the bottom plate;

[0042] 12: first side panel;

[0043] 13: Second side panel;

[0044] 21: Nozzle fixing plate;

[0045] 22: nozzle side pressure plate;

[0046] 23: nozzle bottom pressure plate;

[0047] 24: Nozzle;

[0048] 211: through slot;

[0049] 241: Metal sheet;

[0050] 242: Piezoelectric resonator;

[0051] 243: Spray needle. DETAILED DESCRIPTION

[0052] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0053] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0054] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0055] The present application provides a nozzle fixing device, a nozzle assembly and an inkjet device, which are used to fix the printing and dyeing nozzle to ensure the quality of printing and dyeing.

[0056] The nozzle fixing device, nozzle assembly and inkjet device provided by the present application form a structure for placing the nozzle assembly through a concave fixing frame, and then accommodate the hanging ears on the metal sheet through the through grooves on the bottom surface of the nozzle fixing plate, and then fix the installed nozzle through the nozzle side pressure plate and the nozzle bottom pressure plate. In this way, the nozzle can be fixed simply and conveniently by fixing the nozzle through the nozzle side pressure plate and the nozzle bottom pressure plate, thereby improving the efficiency of nozzle fixing. In this way, since the effect of nozzle fixing is guaranteed, the quality of printing can be guaranteed.

[0057] Specific embodiments are given below to introduce the technical solution of the present application in detail.

[0058] Figure 1A This is a schematic diagram of a nozzle fixing device shown in an exemplary embodiment of the present application. Figure 1A The nozzle fixing device provided in this embodiment includes a concave fixing frame 1 and a nozzle fixing assembly 2 for fixing the nozzle; wherein,

[0059] The concave fixing frame 1 includes a fixing bottom plate 11, a first side plate 12 and a second side plate 13; the first side plate 12 and the second side plate 13 are perpendicular to the fixing bottom plate 11, and the first side plate 12 and the second side plate 13 are opposite to each other;

[0060] The nozzle fixing assembly 2 includes a nozzle fixing plate 21, a nozzle side pressure plate 22 and a nozzle bottom pressure plate 23;

[0061] The bottom surface of the nozzle fixing plate 21 is provided with at least one through groove; the through groove runs through the nozzle fixing plate 21 along the width direction; the length of the through groove along the length direction of the nozzle fixing plate 21 is the same as the thickness of the metal sheet of the nozzle 24, and the through groove is used to accommodate the hanging ear on the metal sheet;

[0062] The nozzle fixing plate 21 is fixed to the first side plate 12 and the second side plate 13 at one end away from the fixing bottom plate 11 in a manner parallel to the fixing bottom plate 11;

[0063] The nozzle side pressure plate 22 is fixed on the first side surface of the nozzle fixing plate 21; wherein the first side surface is any one of the two side surfaces of the nozzle fixing plate 21 along the width direction;

[0064] The nozzle bottom pressure plate 23 is fixed on the bottom surface of the nozzle fixing plate 21 so that after the hanging ear is inserted into the through groove in a manner that the protrusion is away from the nozzle side pressure plate, the nozzle bottom pressure plate 23 covers the protrusion.

[0065] Figure 1B An exploded view of a nozzle fixing device is shown as an exemplary embodiment of the present application. Figure 1CThis is a schematic diagram of a nozzle fixing device shown as another exemplary embodiment of the present application. Figure 2 This is a schematic diagram of a concave fixing frame according to an exemplary embodiment of the present application. Figure 1A , Figure 1B , Figure 1C and Figure 2 The concave fixing frame 1 includes a fixing bottom plate 11, a first side plate 12 and a second side plate 13; the first side plate 12 and the second side plate 13 are perpendicular to the fixing bottom plate, and the first side plate 12 and the second side plate 13 are opposite to each other.

[0066] Specifically, the first side plate 12 and the second side plate 13 are fixed on the fixed bottom plate 11 , and the distance between them can be determined according to the length of the fixed nozzle assembly 2 so that the fixed nozzle assembly 2 can be installed on the first side plate 12 and the second side plate 13 .

[0067] In specific implementation, the specific shapes and specific materials of the fixed bottom plate 11, the first side plate 12 and the second side plate 13 can be determined according to actual needs, and are not limited in this embodiment. For example, in one embodiment, the fixed bottom plate 11, the first side plate 12 and the second side plate 13 can all be made of high-hardness materials, and the first side plate 12 and the second side plate 13 can be made into the same shape.

[0068] Optionally, in a possible implementation, the concave fixing frame 1 is an integrally formed fixing frame.

[0069] In specific implementation, the concave fixing frame 1 can be formed by one-time molding, so that the concave fixing frame 1 is strong and stable, and the nozzle fixing device can be more durable.

[0070] In addition, in another possible implementation of the present application, the fixed base plate 11, the first side plate 12 and the second side plate 13 are independent plates; the fixed base plate 11, the first side plate 12 and the second side plate 13 are assembled together by bolts.

[0071] In specific implementation, the fixed bottom plate 11, the first side plate 12 and the second side plate 13 can be independently manufactured according to specific needs, and then assembled together by bolts. By assembling the fixed bottom plate 11, the first side plate 12 and the second side plate 13, it can be flexibly adapted to different projects and spaces, and is convenient for partial maintenance and replacement.

[0072] It should be noted that the specific material of the concave fixing frame 1 can be set according to actual needs, and is not limited in this embodiment. For example, the concave fixing frame 1 can be a metal fixing frame to make the nozzle fixing device more firm and durable.

[0073] Figure 3This is a schematic diagram of a nozzle fixing plate according to an exemplary embodiment of the present application. Figure 1A , Figure 1B , Figure 1C and Figure 3 There is at least one through groove 211 on the bottom surface of the nozzle fixing plate 21; the through groove 211 runs through the nozzle fixing plate 21 along the width direction; the length of the through groove 211 along the length direction of the nozzle fixing plate 21 is the same as the thickness of the metal sheet of the nozzle 24, and the through groove 211 is used to accommodate the hanging ear on the metal sheet.

[0074] For details, please refer to Figure 1A , Figure 1B , Figure 1C and Figure 3 The nozzle fixing plate 21 is used to accommodate the nozzles 24. The number of nozzles 24 that can be accommodated on the nozzle fixing plate 21 depends on the number of through slots 211 included thereon. In specific implementation, the specific number of through slots 211 can be determined according to actual needs, and this is not limited in this embodiment. For example, in one embodiment, the nozzle fixing plate 21 has 20 through slots 211.

[0075] Optionally, in a possible implementation of the present application, the nozzle fixing plate 21 has a plurality of through slots 211 ; and the distance between two adjacent through slots 211 is the same.

[0076] It should be noted that when the nozzle fixing plate 21 has multiple through slots 211 , the distance between two adjacent through slots 211 is the same, and the length of each through slot 211 along the length direction of the nozzle fixing plate 21 is also the same, which is equal to the thickness of the metal sheet of the nozzle 24 .

[0077] Specifically, by making the intervals between two adjacent through grooves 211 the same, the intervals between the nozzles 24 can be ensured to be the same, so that the ink jetting is more uniform, and the overall performance can be more effectively improved, thereby increasing the ink jetting speed.

[0078] Specifically, in order to conveniently explain how the nozzle fixing assembly fixes the nozzle, the specific structure of the nozzle is briefly introduced below:

[0079] Figure 4 A front view of a nozzle shown as an exemplary embodiment of the present application; Figure 5 This is a left view of a nozzle according to an exemplary embodiment of the present application. Figure 4 and Figure 5 , the nozzle 24 includes a metal sheet 241, a piezoelectric resonator 242 and a nozzle needle 243;

[0080] The metal sheet 241 has a hanging ear, and the spray needle 243 is fixed to an end of the metal sheet 241 away from the hanging ear in a manner parallel to the metal sheet 241;

[0081] The piezoelectric resonator 242 is located on the side of the metal sheet 241 ; the piezoelectric resonator is used to drive the metal sheet 241 to vibrate under the control of a driving electrical signal, so as to vibrate the spray needle 243 and vibrate the liquid in the spray needle 243 out.

[0082] Specifically, refer to Figure 4 and Figure 5 When the nozzle 24 is fixed on the nozzle fixing plate 21 , the hanging ear on the nozzle 24 is accommodated in the through groove 211 .

[0083] Optionally, in a possible implementation of the present application, the first side plate 12 and the second side plate 13 have contoured holes at one end away from the fixed bottom plate 11;

[0084] The nozzle fixing plate 21 has an inserting portion matching the contoured hole; the nozzle fixing plate 21 is fixed to the first side plate 12 and the second side plate 13 in a manner that the inserting portion is inserted into the contoured hole.

[0085] Figure 6 This is an assembly diagram of a nozzle fixing device shown in an exemplary embodiment of the present application. Figure 1A and Figure 6 The first side plate 12 and the second side plate 13 are provided with profiling holes; the profiling holes are arranged at an end away from the fixed bottom plate 11, and the nozzle fixing plate 21 is fixed on the concave fixing frame 1 through the profiling holes.

[0086] Specifically, the morphologies of the profiling holes on the first side plate 12 and the second side plate 13 are consistent, and the specific shape of each profiling hole can be set according to actual needs, which is not limited in this embodiment.

[0087] For further information, please refer to Figure 3 Insertion parts matching the contoured holes are provided at both ends of the nozzle fixing plate 21. By inserting the insertion parts at both ends into the contoured holes on the first side plate 12 and the second side plate 13 respectively, the nozzle fixing plate 21 can be stably and reliably fixed on the concave fixing frame 1.

[0088] In this way, by providing the profiling holes on the first side plate and the second side plate, the nozzle fixing plate can be firmly and stably fixed on the concave fixing frame through the insertion parts at both ends. In this way, the stability and firmness of the nozzle fixing plate can be ensured under the premise of easy installation, and then the stability of the nozzle can be ensured. In addition, by changing the inclination angle of the profiling hole, the inclination angle of the nozzle can be controlled. For example, in a possible implementation, by changing the inclination angle of the profiling hole, the angle between the bottom surface of the nozzle fixing plate and the horizontal direction can be made to be 0° to 360°, so that the inclination angle of the nozzle can be changed within 0° to 360°.

[0089] Specifically, the specific angle between the bottom surface of the nozzle fixing plate 21 and the horizontal direction can be set according to actual needs, and this is not limited in this embodiment. For example, in one embodiment, by changing the inclination angle of the profiling hole, the angle between the bottom surface of the nozzle fixing plate 21 and the horizontal direction can be determined to be 170°.

[0090] The nozzle fixing plate provided in this embodiment can make the angle between the bottom surface of the nozzle fixing plate and the horizontal direction be 0° to 360° by changing the inclination angle of the contoured hole, so that the inclination angle of the nozzle can be changed within 0° to 360°, thus making the flexibility and adaptability of the nozzle fixing device better.

[0091] For further information, please refer to Figure 1A and Figure 6 The nozzle side pressure plate 22 is fixed on the first side surface of the nozzle fixing plate 21; wherein the first side surface is any one of the two side surfaces of the nozzle fixing plate 21 along the width direction.

[0092] It should be noted that, before installing the nozzle side pressure plate 22 , the nozzle 24 is installed in advance in the through groove 211 of the nozzle fixing plate 21 .

[0093] Please continue to refer to Figure 1A and Figure 6 , mounting holes may be provided at both ends of the nozzle fixing plate 21, for fixing the nozzle side pressure plate 22 to the nozzle fixing plate 21 through fixing components (such as screws). It should be noted that any side surface of the nozzle fixing plate 21 in the width direction may be used as the first side surface, so as to install the nozzle side pressure plate 22 on the first side surface. In this way, by installing the nozzle side pressure plate, the movement of the nozzle 24 in the width direction of the nozzle fixing plate 21 can be limited, specifically, the movement toward the first side surface can be limited.

[0094] Figure 7 This is an assembly diagram of a nozzle fixing device showing another exemplary embodiment of the present application. Figure 1A , Figure 6 and Figure 7 The nozzle bottom pressure plate 23 is fixed on the bottom surface of the nozzle fixing plate 21 so that after the hanging ear is inserted into the through groove 211 in a manner that the protrusion is away from the nozzle side pressure plate 22, the nozzle bottom pressure plate 23 covers the protrusion.

[0095] For details, please continue to refer to Figure 4 and Figure 5 The hanging ear of the nozzle 24 has a protrusion. When inserting the nozzle 24, the protrusion of the hanging ear on the nozzle 24 is inserted into the through groove 211 in a manner that the protrusion is away from the nozzle side pressure plate 22.

[0096] For further information, please refer to Figure 1A , Figure 6 and Figure 7 Mounting holes may be provided at both ends of the nozzle fixing plate 21 for fixing the nozzle bottom pressure plate 23 on the nozzle fixing plate 21 through fixing components (such as screws) to limit the movement of the nozzle 24.

[0097] It should be noted that the specific material of the nozzle fixing assembly 2 can be set according to actual needs, and is not limited in this embodiment. For example, the nozzle fixing assembly 2 is made of metal material to make the nozzle fixing device more firm and durable.

[0098] The nozzle fixing device, nozzle assembly and inkjet device provided in this embodiment form a structure for placing the nozzle assembly through a concave fixing frame, and then accommodate the hanging ears on the metal sheet through the through groove on the bottom surface of the nozzle fixing plate, and then fix the installed nozzle through the nozzle side pressure plate and the nozzle bottom pressure plate. In this way, the nozzle can be fixed simply and conveniently by fixing the nozzle through the nozzle side pressure plate and the nozzle bottom pressure plate, and the efficiency of nozzle fixing can be improved. In this way, since the effect of nozzle fixing is guaranteed, the quality of printing can be guaranteed.

[0099] Corresponding to the above-mentioned embodiment of a nozzle fixing device, the present application also provides an embodiment of a nozzle assembly. Figure 1A The nozzle assembly provided by the present application comprises the nozzle fixing device described in the first aspect of the present application, and at least one nozzle fixed on the nozzle fixing device; wherein,

[0100] The nozzle includes a metal sheet 241, a nozzle needle 243 and a piezoelectric resonator 242;

[0101] The metal sheet 241 has a hanging ear, and the spray needle 243 is fixed to an end of the metal sheet 241 away from the hanging ear in a manner parallel to the metal sheet 241;

[0102] The piezoelectric resonator 242 is located on the side of the metal sheet 241 ; the piezoelectric resonator is used to drive the metal sheet 241 to vibrate under the control of a driving electrical signal, so as to vibrate the spray needle 243 and vibrate the liquid in the spray needle 243 out.

[0103] For details, please refer to Figure 4 and Figure 5 One end of the metal sheet 241 forms a hanging ear, through which the nozzle 24 can be fixed on the nozzle fixing plate. In specific implementation, the hanging ear can be designed into an inverted L shape so that it can be placed on the nozzle fixing plate and fixed.

[0104] The piezoelectric resonator includes a lower electrode layer, a piezoelectric ceramic layer and an upper electrode layer stacked in sequence from the side close to the metal sheet to the side away from the metal sheet. The nozzle is provided with piezoelectric resonators on both sides of the metal sheet so as to drive the metal sheet to vibrate at the same time under the control of the driving electrical signal. Compared with only providing a piezoelectric resonator on one side of the metal sheet, two groups of piezoelectric resonators can make the metal sheet vibrate with a larger amplitude and a larger vibration force, so that the vibration amplitude of the spray needle is larger and the vibration speed is faster, and the liquid to be printed stored in the spray needle is easier to overcome the surface tension at the liquid outlet of the spray needle and drip. On this basis, the inner diameter of the spray needle is increased and the spray needle for printing high-viscosity liquids can still discharge liquid smoothly. Therefore, the nozzle can not only increase the liquid output of the spray needle during a single vibration and improve the printing and dyeing efficiency, but also is suitable for high-viscosity liquids to be printed, expanding the scope of application of printing. The nozzle assembly provided in the present application can be applied to liquids to be printed of 50 to 2000 CPS.

[0105] The nozzle assembly provided in this embodiment drives the metal sheet to vibrate through the piezoelectric resonator when inkjet processing is required, thereby vibrating the liquid in the nozzle needle, so that the inkjet process can be completed sensitively and quickly.

[0106] Furthermore, the present application also provides an inkjet device, which includes at least one nozzle assembly provided in the second aspect of the present application.

[0107] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A nozzle fixing device, characterized in that: The nozzle fixing device comprises a concave fixing frame and a nozzle fixing assembly for fixing the nozzle; wherein, The concave fixing frame comprises a fixing bottom plate, a first side plate and a second side plate; the first side plate and the second side plate are perpendicular to the fixing bottom plate, and the first side plate and the second side plate are opposite to each other; The nozzle fixing assembly includes a nozzle fixing plate, a nozzle side pressure plate and a nozzle bottom pressure plate; The bottom surface of the nozzle fixing plate is provided with at least one through groove; the through groove runs through the nozzle fixing plate in the width direction; the length of the through groove in the length direction of the nozzle fixing plate is the same as the thickness of the metal sheet of the nozzle, and the through groove is used to accommodate the hanging ear on the metal sheet; The nozzle fixing plate is fixed to the first side plate and the second side plate at one end away from the fixing bottom plate in a manner parallel to the fixing bottom plate; The nozzle side pressure plate is fixed on the first side surface of the nozzle fixing plate; wherein the first side surface is any one of the two side surfaces of the nozzle fixing plate along the width direction; The nozzle bottom pressure plate is fixed on the bottom surface of the nozzle fixing plate so that after the hanging ear is inserted into the through groove in a manner that the protrusion is away from the nozzle side pressure plate, the nozzle bottom pressure plate covers the protrusion.

2. The nozzle fixing device according to claim 1, characterized in that: The concave fixing frame is an integrally formed fixing frame; or, The fixed bottom plate, the first side plate and the second side plate are independent plates; the fixed bottom plate, the first side plate and the second side plate are assembled together by bolts.

3. The nozzle fixing device according to claim 1, characterized in that: The nozzle fixing plate is provided with a plurality of through slots; the distance between two adjacent through slots is the same.

4. The nozzle fixing device according to claim 1, characterized in that: The first side plate and the second side plate have a contoured hole at one end away from the fixed bottom plate; The nozzle fixing plate has an inserting portion matched with the profiling hole; the nozzle fixing plate is fixed on the first side plate and the second side plate in a manner that the inserting portion is inserted into the profiling hole.

5. The nozzle fixing device according to claim 4, characterized in that: The angle between the bottom surface of the nozzle fixing plate and the horizontal direction is 0° to 360°.

6. The nozzle fixing device according to claim 1, characterized in that: The concave fixing frame is a metal fixing frame.

7. The nozzle fixing device according to claim 1, characterized in that: The nozzle fixing assembly is made of metal material.

8. The nozzle fixing device according to claim 1, characterized in that: The nozzle fixing plate is provided with 20 through slots; the distance between two adjacent through slots is the same.

9. A nozzle assembly, characterized in that: The nozzle assembly comprises the nozzle fixing device according to any one of claims 1 to 8, and at least one nozzle fixed on the nozzle fixing device; wherein, The nozzle comprises a metal sheet, a nozzle needle and a piezoelectric resonator; The metal sheet has a hanging ear, and the spray needle is fixed on an end of the metal sheet away from the hanging ear in a manner parallel to the metal sheet; The piezoelectric resonator is located on the side of the metal sheet; the piezoelectric resonator is used to drive the metal sheet to vibrate under the control of a driving electrical signal, so as to vibrate the spray needle and vibrate the liquid in the spray needle out.

10. An inkjet device, characterized in that: The inkjet device comprises at least one nozzle assembly according to claim 9.

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