Gun nozzle structure and coating device

Abstract

The utility model relates to a gun nozzle structure and a coating device, the gun nozzle structure comprises a base, the surface of the base is concavely provided with a mounting groove, and the base is provided with at least one first runner communicating with the mounting groove in a penetrating manner; the gun nozzle assembly is fixedly arranged in the mounting groove, the gun nozzle assembly and the first flow channels are arranged in a one-to-one correspondence mode, the gun nozzle assembly is provided with second flow channels in a penetrating mode, and the second flow channels and the first flow channels are communicated in a one-to-one correspondence mode. The gun nozzle assembly of the gun nozzle structure is fixed through the mounting groove of the base, mounting is firm and reliable, the gun nozzle assembly does not shake or shift easily in the process of using the glue gun, the accuracy of the glue outlet position is ensured, the stable mounting mode is also beneficial for reducing the problem of non-uniform glue outlet caused by shaking of the gun nozzle, and the service life of the glue gun is prolonged. And the coating quality of the glue gun is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coating devices, in particular to a nozzle structure and a coating device. BACKGROUND

[0002] The glue gun mainly coats adhesive on a specific position to achieve the purposes of bonding, sealing and fixing. The current glue gun has the problems of inaccurate glue outlet position and uneven glue outlet during use, which affects the glue outlet quality. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a nozzle structure and a coating device to solve the problems of inaccurate glue outlet position and uneven glue outlet during use of the current glue gun, which affects the glue outlet quality.

[0004] In a first aspect, a nozzle structure comprises:

[0005] a base, a surface of the base is concavely provided with a mounting groove, the base is provided with at least one first flow channel in communication with the mounting groove; and

[0006] at least one nozzle assembly, the nozzle assembly is fixedly arranged in the mounting groove, the nozzle assembly is arranged in one-to-one correspondence with the first flow channel, the nozzle assembly is provided with a second flow channel in communication with the first flow channel in one-to-one correspondence.

[0007] In one of the embodiments, the base comprises a first mounting surface and a second mounting surface connected at an angle, the first mounting surface and the second mounting surface are concavely provided with the mounting groove, the nozzle assembly comprises a first nozzle assembly and a second nozzle assembly, the first nozzle assembly is fixedly arranged on the first mounting surface, and the second nozzle assembly is fixedly arranged on the second mounting surface.

[0008] In one of the embodiments, the base further comprises a third mounting surface, the third mounting surface is arranged opposite to the first mounting surface, the second mounting surface is located between the first mounting surface and the third mounting surface, the third mounting surface is arranged at an angle with the second mounting surface, the first flow channel corresponding to the first nozzle assembly penetrates the first mounting surface and the third mounting surface, and the first flow channel corresponding to the second nozzle assembly penetrates the second mounting surface and the third mounting surface.

[0009] In one of the embodiments, the first flow channel corresponding to the first nozzle assembly comprises a first segment and a second segment in communication at a bend, the first segment penetrates the first mounting surface, and the second segment penetrates the third mounting surface.

[0010] In one of the embodiments, the first flow channel corresponding to the second nozzle assembly comprises a third section and a fourth section in communication with each other, the third section penetrating through the second mounting surface, and the fourth section penetrating through the third mounting surface.

[0011] In one of the embodiments, the length of the third section is greater than or equal to the length of the fourth section.

[0012] In one of the embodiments, one end of the first flow channel corresponding to the second nozzle assembly penetrates through the second mounting surface, and the other end is inclined towards the first mounting surface in a preset direction opposite to the direction in which the first mounting surface points to the third mounting surface, and penetrates through the third mounting surface.

[0013] In one of the embodiments, the nozzle assembly comprises a flow guide component and a limiting component, the limiting component is located in the mounting groove, the limiting component is provided with a mounting hole, the limiting component is connected with the base, the mounting hole is in communication with the mounting groove, and the hole wall of the mounting hole is provided with a first clamping part; the flow guide component penetrates through the mounting hole and is located in the mounting groove, the flow guide component is provided with a second clamping part, the second clamping part is clamped with the first clamping part, and the flow guide component is provided with the second flow channel.

[0014] In one of the embodiments, a step part is arranged in the groove body of the mounting groove, the limiting component abuts against the outer peripheral surface and the top surface of the step part, the nozzle assembly further comprises an abutting component, the abutting component is fixedly arranged in the mounting groove and simultaneously abuts against the inner peripheral surface and the top surface of the step part and the inner peripheral surface of the limiting component, the abutting component further abuts against the bottom surface of the flow guide component, the abutting component is provided with a third flow channel, and the third flow channel is in communication with the first flow channel and the second flow channel.

[0015] In a second aspect, a coating device comprises a main structure and a nozzle structure as described in the first aspect, the base of the nozzle structure is connected with the main structure, and the main structure is provided with a receiving cavity in communication with the first flow channel.

[0016] The gun nozzle assembly of the above gun nozzle structure is fixed through the mounting groove of the base, is firm and reliable in installation, and cannot easily shake or displace during use of the glue gun, ensuring the accuracy of the glue outlet position. The stable installation method also helps to reduce the problem of uneven glue outlet caused by shaking of the gun nozzle, and improves the coating quality of the glue gun. The first flow channel of the base and the second flow channel of the gun nozzle assembly are in smooth communication, so that the glue solution can flow smoothly from the inside of the glue gun to the gun nozzle, reducing the resistance in the glue solution flow process and ensuring the smoothness of the glue outlet. When the gun nozzle is worn, blocked or needs to be replaced with a gun nozzle of a different specification, the gun nozzle assembly can be conveniently disassembled and replaced since it is fixed in the mounting groove, without the need for complex disassembly operation of the entire glue gun. Different specifications or types of gun nozzle assemblies can be selected and installed on the base according to different use requirements, meeting various construction requirements and enhancing the versatility of the glue gun. For example, gun nozzle assemblies of different calibers can be replaced to adapt to glue solutions of different viscosities or different glue outlet requirements. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on the disclosed drawings.

[0018] Figure 1 A structural schematic diagram of a coating device provided by an embodiment of the present application.

[0019] Figure 2 A side view of a coating device provided by an embodiment of the present application.

[0020] Figure 3 A Figure 2 A sectional view of part of the structure along the I-I direction.

[0021] Figure 4 A structural schematic diagram of a first gun nozzle structure provided by an embodiment of the present application.

[0022] Figure 5 A top view of the first gun nozzle structure provided by an embodiment of the present application.

[0023] Figure 6 A Figure 5 A sectional view along the A-A direction.

[0024] Figure 7 A Figure 5 A sectional view along the B-B direction.

[0025] Figure 8 AFigure 5 A sectional view along the direction of C-C.

[0026] Figure 9 A Figure 5 A sectional view along the direction of A-A.

[0027] Figure 10 An explosive schematic view of a first gun nozzle structure provided by an embodiment of the present application.

[0028] Figure 11 Another explosive schematic view of the first gun nozzle structure provided by the embodiment of the present application.

[0029] Figure 12 A structural schematic view of a base of the first gun nozzle structure provided by the embodiment of the present application.

[0030] Figure 13 A structural schematic view of a second gun nozzle structure provided by the embodiment of the present application.

[0031] Figure 14 A structural schematic view of an outer shell of the base of the second gun nozzle structure provided by the embodiment of the present application.

[0032] Figure 15 A structural schematic view of a base body of the base of the second gun nozzle structure provided by the embodiment of the present application.

[0033] Figure 16 A top view of the second gun nozzle structure provided by the embodiment of the present application.

[0034] Figure 17 A Figure 16 A sectional view along the direction of D-D.

[0035] Figure 18 A Figure 16 A sectional view along the direction of D-D.

[0036] Figure 19 A Figure 16 A sectional view along the direction of E-E.

[0037] Figure 20 A Figure 16 A sectional view along the direction of F-F.

[0038] Figure 21 A structural schematic view of a connection lock structure provided by the embodiment of the present application.

[0039] Figure 22 An assembly schematic view of a lock head, a first lock ring and a second lock ring in the connection lock structure provided by the embodiment of the present application.

[0040] Figure 23A structure diagram of a lock head in a connecting lock structure provided by the embodiment of the application.

[0041] Figure 24 A structure diagram of a lock head in a connecting lock structure provided by the embodiment of the application.

[0042] The figure mark explanation: 100, coating device; 10, gun nozzle structure; 1, base; 11, mounting groove; 111, step part; 12, first flow channel; 13, first mounting surface; 14, second mounting surface; 15, third mounting surface; 16, base body; 17, shell; 171, placing hole; 2, gun nozzle assembly; 21, second flow channel; 22, first gun nozzle assembly; 221, first section; 222, second section; 23, second gun nozzle assembly; 231, third section; 232, fourth section; 24, flow guiding part; 241, second clamping part; 25, limiting part; 251, mounting hole; 252, first clamping part; 26, abutting part; 261, third flow channel; 27, sealing piece; 20, rotating cavity unit; 30, feeding unit; 40, gun rod; 50, connecting lock structure; 501, lock head; 5011, first part; 5012, second part; 5013, step; 5014, first fixing hole; 502, lock nut; 5021, third part; 5022, fourth part; 5023, second fixing hole; 503, first lock ring; 504, second lock ring; 60, control valve unit; 70, electromagnetic valve unit; 80, support assembly. DETAILED DESCRIPTION

[0043] In order to make the above objectives, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the application, so the application is not limited by the specific embodiments disclosed below.

[0044] The current glue gun equipment mainly has the following problems: first, after the coating of the glue material, a long tail appears at the end of the glue strip, which looks like a small tail, not only affecting the appearance quality of the glue strip, but also causing process quality defects, such as covering the process holes in the non-gluing area, which needs to be processed manually in the later stage, increasing the process steps and reducing the production efficiency. Second, the glue gun equipment does not respond quickly, and the existing glue coating gun needs an independent on-off valve for each nozzle, and the response speed of the valve itself directly determines the quality of the glue strip and the effectiveness of the control. Third, the structure of the connecting gun rod 40 is relatively complex, which not only has high processing difficulty and is prone to processing defects, but also is difficult to disassemble for maintenance.

[0045] Please refer to Figure 1, in order to solve the above problems, the embodiment of the application provides a gun nozzle structure 10 and a coating device 100. The gun nozzle structure 10 can improve the tailing phenomenon and improve the coating quality by optimizing the flow channel structure. The coating device 100 can improve the response speed by adding a cut-off valve 30, thereby improving the response efficiency. Further, the coating device 100 can realize quick installation and disassembly of the gun rod 40 by adding the connecting lock structure 50, thereby improving the operation convenience.

[0046] Please refer to Figures 1 to 3 The embodiment of the application also provides a coating device 100, which comprises a support assembly 80, an electromagnetic valve unit 70, a control valve unit 60, a connecting lock structure 50, a gun rod 40, a feeding unit 30, a rotating cavity unit 20 and a gun nozzle structure 10.

[0047] It should be noted that the support assembly 80, the electromagnetic valve unit 70, the control valve unit 60, the gun rod 40, the feeding unit 30 and the rotating cavity unit 20 in the embodiment of the application belong to the component structures known to those skilled in the art. Herein, only brief general descriptions are given to the above components.

[0048] Please refer to Figure 3 The support assembly 80 is located at the top of the rotating cavity unit 20. The electromagnetic valve unit 70 is connected with the rotating cavity unit 20, and the control valve unit 60 is connected with the rotating cavity unit 20. The electromagnetic valve unit 70 is electrically connected with the control valve unit 60. The top end of the rotating cavity unit 20 is rotatably communicated with the support assembly 80. The side of the rotating cavity unit 20 is communicated with the feeding unit 30. The bottom end of the rotating cavity unit 20 is communicated with the top end of the gun rod 40 through the connecting lock structure 50, and the bottom end of the gun rod 40 is communicated with the gun nozzle structure 10.

[0049] The support assembly 80 is used to be connected with a robot, and the robot drives the whole coating device 100 to move through the support assembly 80.

[0050] The feeding unit 30 comprises an inlet and an outlet communicated with the rotating cavity unit 20. The inlet is used to introduce fluid into the rotating cavity unit 20, and the fluid enters the gun nozzle structure 10 through the rotating cavity unit 20 and the gun rod 40. The outlet is used to receive the fluid circulating from the gun nozzle structure 10 to the rotating cavity unit 20 through the gun rod 40.

[0051] The electromagnetic valve unit 70 is used to control the on-off of the compressed air entering the control valve unit 60. The electromagnetic valve unit 70 is added, so that the response speed of the coating device 100 is improved, and the coating efficiency is improved.

[0052] The control valve unit 60 is internally provided with a spring and a piston connected with the spring, and the piston is driven to move up and down by compressed air to control the on-off between the rotating cavity unit 20 and the plurality of first flow channels 12 in the gun nozzle structure 10. In other words, the control valve unit 60 can control the rotating cavity unit 20 to selectively communicate with any second flow channel 21 in the gun nozzle structure 10, so that the fluid in the rotating cavity unit 20 can flow into the corresponding second flow channel 21.

[0053] The rotating cavity unit 20 is internally provided with a closed mounted rotating sealing ring, and the rotating cavity unit 20 can realize feeding while rotating.

[0054] Please refer to Figures 1 to 3 In some embodiments, in order to facilitate the disassembly and installation of the top end of the gun barrel 40 and the rotating cavity unit 320, a connecting lock structure 50 is additionally provided.

[0055] Please refer to Figures 21 to 24The connecting lock structure 50 comprises a lock head 501, a lock nut 502, a first lock ring 503 and a second lock ring 504. The lock head 501 is fixedly arranged on the gun barrel 40, and the lock nut 502 is fixedly arranged on the rotating cavity unit 20. The lock head 501 comprises a first part 5011 and a second part 5012 arranged in a stack. The first part 5011 is annular, and a first fixing hole 5014 for allowing the gun barrel 40 to pass through is arranged through the first part 5011. The second part 5012 is arc-shaped, and the second part 5012 is arranged on both sides of the first part 5011 along the diameter direction of the first part 5011. The inner side surface of the second part 5012 is arranged staggered with the inner circumferential surface of the first part 5011 to form a step 5013 for accommodating the first lock ring 503 and the second lock ring 504. The first lock ring 503 and the second lock ring 504 are arranged on the step and located on the top surface of the first part 5011, and abut against the inner side surface of the second part 5012. The first lock ring 503 and the second lock ring 504 are combined to clamp the gun barrel 40. The lock nut 502 comprises a third part 5021 and a fourth part 5022 arranged in a stack. The third part 5021 is annular, and a second fixing hole 5023 for allowing the gun barrel 40 to pass through is arranged through the third part 5021. The fourth part 5022 is arranged on both sides of the third part 5021 along the diameter direction of the third part 5021. The inner side surface of the fourth part 5022 abuts against the outer side surface of the second part 5012, and the fourth part 5022 is combined with the second part 5012. The inner side surface of the fourth part 5022 simultaneously abuts against the outer side surface of the first lock ring 503 and the second lock ring 504. When the lock nut 502 is arranged on the lock head 501, the fourth part 5022 of the lock nut 502 and the second part 5012 of the lock head 501 simultaneously clamp the first lock ring 503 and the second lock ring 504. The lock head 501 and the lock nut 502 can be fixed by bolts or other fasteners. By arranging the lock head 501, the lock nut 502, the first lock ring 503 and the second lock ring 504, the gun barrel 40 is connected with the rotating cavity unit 20, and the connection stability between the gun barrel 40 and the rotating cavity unit 20 can be increased. Since the first lock ring 503 and the second lock ring 504 are combined to clamp the gun barrel 40, and the lock head 501 and the lock nut 502 are combined to clamp the first lock ring 503 and the second lock ring 504, the disassembly and assembly of the four parts are more convenient, and the gun barrel 40 can be quickly disassembled.

[0056] The bottom end of the gun barrel 40 is in communication with the muzzle structure 10. Please refer to Figures 4 to 12 , Figures 4 to 12 The muzzle structure 10 provided by the embodiment of the present application. Please refer to Figures 13 to 20 , Figures 13 to 20 Another muzzle structure 10 provided by the embodiment of the present application.

[0057] The muzzle structure 10 comprises a base 1 and at least one muzzle assembly 2. Please refer to Figure 10 and Figure 11 , or refer to Figure 14, the surface of the base 1 is concave with a mounting groove 11, please refer to Figures 6 to 8 , or refer to Figures 18 to 20 , the base 1 is provided with at least one first flow channel 12 in communication with the mounting groove 11. The nozzle assembly 2 is fixedly arranged in the mounting groove 11, and the nozzle assembly 2 is arranged in one-to-one correspondence with the first flow channel 12. The nozzle assembly 2 is provided with a second flow channel 21, and the second flow channel 21 is in one-to-one correspondence with the first flow channel 12. The first flow channel 12 is used for communicating with the gun barrel 40 to introduce the fluid such as glue solution. After the fluid enters the second flow channel 21 through the first flow channel 12, it is coated on the object to be coated by the nozzle assembly 2.

[0058] The nozzle assembly 2 of the above-mentioned nozzle structure 10 is fixed through the mounting groove 11 of the base 1, and the mounting is firm and reliable. During use of the glue gun, the nozzle assembly 2 will not easily shake or shift, ensuring the accuracy of the glue outlet position. This stable mounting method also helps to reduce the problem of uneven glue outlet caused by shaking of the nozzle, and improves the coating quality of the glue gun. Please refer to Figures 6 to 8 At the same time, the first flow channel 12 of the base 1 and the second flow channel 21 of the nozzle assembly 2 are in smooth communication, so that the glue solution can flow smoothly from the inside of the glue gun to the nozzle, reducing the resistance in the flow process of the glue solution and ensuring the smoothness of the glue outlet. When the nozzle is worn, blocked or needs to be replaced with a different specification nozzle, since the nozzle assembly 2 is fixedly arranged in the mounting groove 11, it can be easily disassembled and replaced without the need for complex disassembly operation of the entire glue gun. Different specifications or types of nozzle assemblies 2 can be selected according to different use requirements and mounted on the base 1 to meet various construction requirements, enhancing the versatility of the glue gun. For example, different caliber nozzle assemblies 2 can be replaced to adapt to different viscosity of glue solution or different glue outlet requirements.

[0059] Please refer to Figures 6 to 8 The number of nozzle assemblies 2 is not limited in the embodiments of the present application. For example, the nozzle assemblies 2 can be one, two, three or four, etc. Each nozzle assembly 2 is provided with a second flow channel 21 in communication with the first flow channel 12.

[0060] Please refer to Figures 6 to 8 The number of first flow channels 12 is not limited in the embodiments of the present application. For example, the first flow channels 12 can be one, two, three or four, etc. When there are multiple first flow channels 12, the multiple first flow channels 12 are arranged at intervals, each first flow channel 12 is arranged in correspondence with one nozzle assembly 2, and each first flow channel 12 is in correspondence with the second flow channel 21 of one nozzle assembly 2.

[0061] Please refer to Figures 10 to 11 The number of mounting grooves 11 is not limited in the embodiments of the present application. For example, the mounting grooves 11 can be one, two, three or four, etc. The nozzle assemblies 2 can be arranged in one-to-one correspondence with the mounting grooves 11, or multiple nozzle assemblies 2 can be arranged in one mounting groove 11.

[0062] Please refer to Figure 4 In some embodiments, the base 1 comprises a first mounting surface 13 and a second mounting surface 14 which are connected at an angle, the first mounting surface 13 and the second mounting surface 14 are recessed with mounting grooves 11, the gun nozzle assembly 2 comprises a first gun nozzle assembly 22 and a second gun nozzle assembly 23, the first gun nozzle assembly 22 is fixedly arranged on the first mounting surface 13, and the second gun nozzle assembly 23 is fixedly arranged on the second mounting surface 14. By arranging the first gun nozzle assembly 22 and the second gun nozzle assembly 23 on the first mounting surface 13 and the second mounting surface 14 which are connected at an angle respectively, the coating operation can be performed from different directions, for example, when spraying an object with a corner or irregular shape, the two gun nozzles can act from different angles at the same time, thereby improving the coating efficiency.

[0063] The number of the second mounting surfaces 14 is not limited in the embodiments of the present application, for example, the second mounting surfaces 14 can be one, two, three or the like. Each of the second mounting surfaces 14 is arranged at an angle with the first mounting surface 13. Correspondingly, the number of the second gun nozzle assemblies 23 can be one, two or three or the like.

[0064] The position of the second mounting surface 14 is not limited in the embodiments of the present application, for example, when the second mounting surface 14 comprises two, the second mounting surfaces 14 can be arranged on the two sides of the first mounting surface 13, or the second mounting surfaces 14 can be arranged on the same side of the first mounting surface 13.

[0065] The position of the first flow channel 12 is not limited in the embodiments of the present application. For example, one end of the first flow channel 12 corresponding to the first gun nozzle assembly 22 is communicated with the first mounting surface 13, and the other end can be communicated with any position on the base 1. Similarly, one end of the first flow channel 12 corresponding to the second gun nozzle assembly 23 is communicated with the second mounting surface 14, and the other end can be communicated with any position on the base 1.

[0066] In order to realize the integration of the glue gun channel, the position of the first flow channel 12 is concentrated to facilitate the assembly of the gun nozzle assembly 2. Please refer to Figure 6 In some embodiments, the base 1 further comprises a third mounting surface 15 which is arranged opposite to the first mounting surface 13, the second mounting surface 14 is located between the first mounting surface 13 and the third mounting surface 15, the third mounting surface 15 is arranged at an angle with the second mounting surface 14, and the first flow channel 12 corresponding to the first gun nozzle assembly 22 penetrates through the first mounting surface 13 and the third mounting surface 15, please refer to Figure 7 and Figure 8The first flow channel 12 corresponding to the second nozzle assembly 23 penetrates the second mounting surface 14 and the third mounting surface 15. Thus, the first flow channel 12 on the base 1 all penetrates the third mounting surface 15, and only the fluid to be coated needs to be introduced into the third mounting surface 15 of the base 1 to make the fluid flow into the first nozzle assembly 22 and the second nozzle assembly 23 through the first flow channel 12, respectively.

[0067] The embodiments of the present application are not limited to the specific form of the first flow channel 12 corresponding to the first nozzle assembly 22. For example, referring to Figure 18 In some embodiments, the first flow channel 12 corresponding to the first nozzle assembly 22 vertically penetrates the first mounting surface 13 and the third mounting surface 15.

[0068] In other embodiments, some embodiments, referring to Figure 6 The first flow channel 12 corresponding to the first nozzle assembly 22 includes a first segment 221 and a second segment 222 in communication by bending, the first segment 221 penetrates the first mounting surface 13, and the second segment 222 penetrates the third mounting surface 15. In other words, the first flow channel 12 corresponding to the first nozzle assembly 22 is arranged by bending, which can lengthen the first flow channel 12. When the first flow channel 12 is lengthened, the distance of the fluid flowing in the first flow channel 12 is increased. According to the principle of fluid mechanics, under the condition of constant flow, the increase of the length of the first flow channel 12 will cause the change of the flow rate distribution of the fluid. The longer first flow channel 12 will make the fluid experience more friction and resistance in the first flow channel 12, so that the flow rate of the fluid in the first flow channel 12 is more uniform. In the glue coating process, the glue liquid flowing out with uniform flow rate is more stable and is not easy to cause the tailing phenomenon caused by local flow rate being too fast or too slow.

[0069] Referring to Figure 6 Further, in some embodiments, the first segment 221 vertically extends toward the third mounting surface 15, and the second segment 222 horizontally extends toward the direction parallel to the third mounting surface 15, so that the first flow channel 12 corresponding to the first nozzle assembly 22 is in an L shape. The second segment 222 is close to the third mounting surface 15, and the middle position of the second segment 222 is in communication with the third mounting surface 15. In other embodiments, the first flow channel 12 corresponding to the first nozzle assembly 22 can be in a Z shape or other forms.

[0070] The embodiments of the present application are not limited to the specific form of the first flow channel 12 corresponding to the second nozzle assembly 23. In some embodiments, the first flow channel 12 corresponding to the second nozzle assembly 23 can vertically penetrate the second mounting surface 14 and the third mounting surface 15.

[0071] Referring to Figure 7In some other embodiments, one end of the first flow channel 12 corresponding to the second nozzle assembly 23 penetrates the second mounting surface 14, and the other end is inclined to the direction of the first mounting surface 13 from the second mounting surface 14 in a preset direction intersecting the direction of the first mounting surface 13 pointing to the third mounting surface 15. In other words, in this embodiment, the first flow channel 12 is inclined straightly connecting the second mounting surface 14 and the third mounting surface 15. In this way, the resistance caused by the change of the fluid flow direction can be reduced, and the fluid flow can be made smoother. Further, the first flow channel 12 is perpendicular to the second mounting surface 14, so that the fluid flow direction can be kept perpendicular to the outlet plane. In this way, the fluid can be sprayed stably and uniformly.

[0072] Please refer to Figure 8 , Figure 19 and Figure 20 In some other embodiments, the first flow channel 12 corresponding to the second nozzle assembly 23 includes a third segment 231 and a fourth segment 232 connected in a zigzag manner, the third segment 231 penetrates the second mounting surface 14, and the fourth segment 232 penetrates the third mounting surface 15. The zigzag connection of the third segment 231 and the fourth segment 232 can prolong the length of the first flow channel 12 corresponding to the second nozzle assembly 23, so that the fluid flow can be more uniform and stable, and the tailing phenomenon caused by the local high or low flow rate can be reduced.

[0073] Please refer to Figure 8 , Figure 19 and Figure 20 Further, in optional embodiments, the third segment 231 is perpendicular to the second mounting surface 14, and the fourth segment 232 is perpendicular to the third mounting surface 15. In this way, when the fluid flows to the outlet on the second mounting surface 14 and the third mounting surface 15 in the first flow channel 12, the flow direction can be kept perpendicular to the outlet plane. In this way, the fluid can be sprayed stably and uniformly. If the outlet end is not perpendicular to the second mounting surface 14 or the third mounting surface 15, the fluid will generate a lateral component when sprayed, which will cause the trajectory of the fluid to deviate, which is not conducive to accurately controlling the landing point and shape of the fluid, thereby affecting the coating quality.

[0074] Please refer to Figure 19 and Figure 20 In optional embodiments, the length of the third segment 231 can be less than the length of the fourth segment 232.

[0075] Please refer to Figure 8In other embodiments, the length of the third section 231 is greater than or equal to the length of the fourth section 232. Since the fluid enters from the third mounting surface 15, it first flows through the fourth section 232, which is relatively short, and its main function is to quickly guide the fluid in the direction connected with the third section 231. The longer third section 231 can further consolidate and stabilize the flow direction of the fluid after the fluid has been preliminarily adjusted in the fourth section 232. The longer third section 231 can more effectively ensure that the fluid is stably discharged to the second mounting surface 14 in the direction it is guided, avoiding the deviation of the fluid direction when it is discharged. Further, the fourth section 232 to the third section 231 is the bending part of the flow channel. If the fourth section 232 is too long, the fluid is more likely to produce a force that interferes with the flow direction when it turns into the third section 231 due to its inertia and the interaction of the flow channel wall. When the third section 231 is longer, it can better overcome the interference brought by the turning, so that the fluid flows more smoothly in the flow channel and flows out in the expected direction. The longer third section 231 can act as a pressure buffer area. In this area, the pressure of the fluid can be more fully adjusted to avoid the phenomenon of unstable fluid injection caused by rapid pressure changes (if the third section 231 is shorter). For example, the longer third section 231 can make the pressure more uniform, prevent uneven fluid injection caused by pressure mutations at the outlet, and reduce the tailing phenomenon.

[0076] The specific structure of the base 1 will be described below. There are several embodiments for forming the mounting groove 11 on the base 1. Please refer to Figure 14 and Figure 15 In some embodiments, the base 1 includes a base body 16 and a shell 17, and the base body 16 is provided with the first flow channel 12. The shell 17 is provided with a placement hole 171, and the shell 17 is arranged on the base body 16 and forms the mounting groove 11 with the base body 16 for mounting the nozzle assembly 2. Please refer to Figure 15 In this embodiment, the nozzle assembly 2 is arranged against the base body 16 and is abutted by the shell 17. A sealing member 27 can be additionally arranged between the nozzle assembly 2 and the base body 16 of the base 1 to achieve sealing. The sealing member 27 is annular and is located outside the first flow channel 12 of the base 1 and the second flow channel 21 of the flow guide component 24 to achieve avoidance.

[0077] Please refer to Figures 10 to 12 In other embodiments, the base 1 is directly provided with the mounting groove 11. Please refer to Figure 9In some embodiments, the nozzle assembly 2 comprises a flow guide component 24 and a limiting component 25. The limiting component 25 is located in the mounting groove 11. The limiting component 25 is provided with a mounting hole 251. The limiting component 25 is connected to the base 1. The mounting hole 251 is in communication with the mounting groove 11. The hole wall of the mounting hole 251 is provided with a first clamping part 252. The flow guide component 24 is arranged in the mounting hole 251 and in the mounting groove 11. The flow guide component 24 is provided with a second clamping part 241. The second clamping part 241 is clamped with the first clamping part 252. The flow guide component 24 is provided with a second flow channel 21. The flow guide component 24 is used to directly contact the coated object and guide the fluid flowing out of the second flow channel 21 to the coated object. The limiting component 25 is added to further connect the flow guide component 24 and the base 1. The contact area between the flow guide component 24 and the base 1 is increased. The installation stability of the flow guide component 24 is improved.

[0078] Specifically, the limiting component 25 is located in the mounting groove 11. The outer peripheral surface of the limiting component 25 abuts against the groove wall surface of the mounting groove 11. The flow guide component 24 is located in the mounting hole 251 of the limiting component 25. The second clamping part 241 of the limiting component 25 is clamped with the first clamping part 252 of the flow guide component 24.

[0079] Please refer to Figure 9 Further, in some embodiments, the groove body of the mounting groove 11 is provided with a stepped part 111. The limiting component 25 abuts against the outer peripheral surface and the top surface of the stepped part 111. The nozzle assembly 2 further comprises an abutting component 26. The abutting component 26 is fixedly arranged in the mounting groove 11 and simultaneously abuts against the inner peripheral surface and the top surface of the stepped part 111 and the inner peripheral surface of the limiting component 25. The abutting component 26 further abuts against the bottom surface of the flow guide component 24. The abutting component 26 is provided with a third flow channel 261. The third flow channel 261 is in communication with the first flow channel 12 and the second flow channel 21. Since the abutting component 26 simultaneously abuts against the stepped part 111 of the mounting groove 11 and the inner peripheral surface of the limiting component 25, the connecting area of the limiting component 25 and the mounting groove 11 is increased. The connecting stability of the limiting component 25 is improved. The fixing effect of the limiting component 25 on the flow guide component 24 is indirectly strengthened. A sealing member 27 can be arranged between the top surface of the abutting component 26 and the bottom surface of the flow guide component 24 to achieve sealing. The sealing member 27 is annular and located outside the second flow channel 21 and the third flow channel 261 to achieve avoidance.

[0080] Optionally, the flow guide component 24 and the abutting component 26 in the embodiments of the present application can be pins. The limiting component 25 can be a fastener such as a nut.

[0081] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0082] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0083] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0084] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0085] It is to be noted that when an element such as a layer, film, or region is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. It will be understood that, when an element or layer is referred to as being "connected" to or "coupled" to another element or layer, it can be directly connected or coupled or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0086] Various technical features described in the above embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations are described. It will be apparent to those skilled in the art, however, that the scope of the disclosure includes all such possible combinations.

[0087] The above-described embodiments are merely illustrative for the present application and are not to be used in a limiting manner. It should be noted that, for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these modifications and improvements should be considered within the scope of the present application. Therefore, the patent protection scope of the present application should be defined by the claims.

Claims

1. A muzzle structure, characterized in that The application relates to a base and a gun nozzle assembly. The base comprises a surface with an installation groove, and at least one first flow channel penetrating through the base and communicating with the installation groove. The gun nozzle assembly is fixed in the installation groove and corresponds to the first flow channel. The base comprises a first installation surface and a second installation surface connected at an angle, and the installation groove is arranged in the first installation surface and the second installation surface.

2. The muzzle structure of claim 1, wherein The gun nozzle assembly comprises a first gun nozzle assembly and a second gun nozzle assembly, and the first gun nozzle assembly is fixed in the first installation surface and the second gun nozzle assembly is fixed in the second installation surface.

3. The muzzle structure of claim 2, wherein The third installation surface is arranged opposite to the first installation surface, and the second installation surface is arranged between the first installation surface and the third installation surface.

4. The muzzle structure of claim 3, wherein The first flow channel corresponding to the first gun nozzle assembly comprises a first section and a second section connected at an angle, and the first section penetrates through the first installation surface and the second section penetrates through the third installation surface.

5. The muzzle structure of claim 3, wherein The first flow channel corresponding to the second gun nozzle assembly comprises a third section and a fourth section connected at an angle, and the third section penetrates through the second installation surface and the fourth section penetrates through the third installation surface.

6. The muzzle structure of claim 5, wherein The length of the third section is greater than or equal to the length of the fourth section.

7. The muzzle structure of claim 3, wherein One end of the first flow channel corresponding to the second gun nozzle assembly penetrates through the second installation surface, and the other end is inclined to the direction of the first installation surface along a preset direction opposite to the direction of the first installation surface to the third installation surface.

8. A muzzle structure according to any one of claims 1 to 7, characterised in that The gun nozzle assembly comprises a flow guide component and a limiting component, and the limiting component is arranged in the installation groove.

9. The muzzle structure of claim 8, wherein, The limiting component is connected with the base, and the installation hole is in communication with the installation groove. The installation groove is provided with a step portion, and the limiting component abuts against the outer peripheral surface and the top surface of the step portion. The gun nozzle assembly further comprises an abutting component fixed in the installation groove and abutting against the inner peripheral surface and the top surface of the step portion and the inner peripheral surface of the limiting component. The abutting component further abuts against the bottom surface of the flow guide component. The abutting component is provided with a third flow channel in communication with the first flow channel and the second flow channel.

10. A coating apparatus characterized by comprising: The coating device comprises a main body structure and the nozzle structure as claimed in any one of claims 1 to 9, the base of the nozzle structure is connected with the main body structure, and the main body structure is provided with a containing cavity in communication with the first flow channel.

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