Coating device for inner wall of shell structure

Abstract

The invention relates to a coating device for the inner wall of a shell structure, belongs to the technical field of surface treatment, and solves the problems of non-uniform film thickness and difficulty in coating a complex area in a traditional coating device. The coating device comprises a liquid conveying pipe used for conveying a coating material, the liquid conveying pipe comprises an inner pipe and an outer pipe, and the outer pipe is arranged outside the inner pipe in a sleeving mode and connected with the inner pipe through a bearing so that the inner pipe can rotate relative to the outer pipe; the multi-angle nozzle is communicated with the front end of the inner pipe, is adjustable in spraying angle and is used for spraying a coating material onto the inner wall of the shell structure; the feeding hole is communicated with the rear end of the inner pipe and is used for inputting a coating material; the feeding device is connected with the outer tube and is used for driving the infusion tube to linearly feed at a constant speed; the rotating device is connected with the inner pipe and used for driving the inner pipe to rotate around the axis. The uniform-speed linear feeding of the infusion tube and the coating of a complex area can be realized, and the coating device has the advantages of uniform coating film thickness, high coating efficiency, strong adaptability and the like.

Description

Technical Field

[0001] The invention relates to the technical field of surface treatment, in particular to a coating device for the inner wall of a shell structure. Background Art

[0002] Surface treatment technology refers to a series of process technologies that change the surface characteristics of materials through physical, chemical or mechanical methods to improve their performance or give them new functions. According to the difference in coating methods, it can be divided into dipping, spraying and polishing. As the core equipment of surface treatment technology, the coating device is mainly used to achieve directional modification of the surface function of the substrate by accurately controlling the application process of the coating material.

[0003] When coating, the conventional coating device usually feeds the coating device manually, so that the coating device coats the inner wall of the shell structure, which easily causes the advancement speed to fluctuate, resulting in film thickness differences, leading to processing errors, which is very inconvenient. In addition, the conventional coating device encounters complex coating areas that are difficult to coat, resulting in low processing efficiency. Therefore, in view of the above problems, the present invention proposes a coating device for the inner wall of the shell structure. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a coating device that can enter the interior of a shell structure at a uniform speed and perform multi-angle coating. The coating device accurately controls the propulsion speed through the design of a mechanical transmission structure, and can realize multi-angle spraying during coating, thereby reducing the processing error rate and improving the efficiency of workpiece processing.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A coating device for the inner wall of a shell structure, comprising:

[0007] An infusion tube, used for conveying coating material, the infusion tube comprising an inner tube and an outer tube, the outer tube being sleeved on the outside of the inner tube and connected to the inner tube through a bearing so that the inner tube can rotate relative to the outer tube;

[0008] A multi-angle spray head connected to the front end of the inner tube and having an adjustable spray angle, used for spraying the coating material onto the inner wall of the shell structure;

[0009] A feed port communicated with the rear end of the inner tube, for inputting coating material;

[0010] A feeding device connected to the outer tube, used to drive the infusion tube to feed linearly at a uniform speed;

[0011] The rotating device connected to the inner tube is used to drive the inner tube to rotate around an axis.

[0012] The present invention significantly improves the uniformity and adaptability of the coating on the inner wall of the shell structure through innovative mechanical transmission and multi-angle adjustment design. Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In terms of feed control, the coating device for the inner wall of the shell structure proposed in the present invention utilizes the first motor to drive the gear to mesh with the rack, and combines the first stepped shaft and the first coupling to achieve uniform linear feeding of the infusion tube, effectively avoiding the speed fluctuation problem of traditional manual advancement, making the coating process more stable and controllable, thereby ensuring a high consistency of the coating film thickness, and further improving the stability of the coating process and the uniformity of the film thickness;

[0014] (2) In terms of coating of complex areas, the multi-angle nozzle of the present invention adopts a linkage mechanism composed of a first connecting rod, a second connecting rod, a third connecting rod and a connector, combined with the ball head-spherical seat matching structure of the connector and the nozzle, so that the nozzle can flexibly rotate around the axis of the connector, thereby realizing multi-angle control of the nozzle angle, so that the nozzle can flexibly cover complex areas such as grooves and corners on the inner wall of the shell structure, thereby significantly improving the working efficiency and coating quality of the coating device, and at the same time more adaptable to diversified processing needs, providing technical support for achieving rapid coating of high-quality complex structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to further explain the present invention and are an important part of the specification. Together with the embodiments of the present invention, they are used to illustrate the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of the overall structure of a coating device for the inner wall of a shell structure provided by an embodiment of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the feeding device;

[0018] Figure 3 is a schematic diagram of the structure of the rotating device;

[0019] Figure 4 It is a schematic diagram of the structure inside the box in the rotating device;

[0020] Figure 5 It is a schematic diagram of the structure of a multi-angle nozzle;

[0021] Figure 6 It is a structural schematic diagram of the feed port;

[0022] Figure 7 It is a schematic diagram of the structure inside the shell in the feed port;

[0023] Figure 8 It is a schematic diagram of the structure of the infusion tube;

[0024] In the figure: 1, feeding device; 2, feeding port; 3, rotating device; 4, infusion tube; 5, multi-angle nozzle; 6, gear; 7, rack; 8, stopper; 9, first step shaft; 10, first coupling; 11, first motor; 12, connecting ring; 13, support frame; 14, box; 15, second coupling; 16, second motor; 17, slide; 18, slide rail; 19, slide block; 20, support table; 21, limit plate; 22, second step shaft; 23, first bearing; 24, second bearing; 25, third bearing; 26, first bevel gear; 27, first Second bevel gear; 28, first connecting plate; 29, second connecting plate; 30, first connecting rod; 31, second connecting rod; 32, third connecting rod; 33, connecting body; 34, nozzle; 35, housing; 36, connecting shaft; 37, fourth bearing; 38, fifth bearing; 39, first elastic retaining ring; 40, second elastic retaining ring; 41, first oil retaining ring; 42, second oil retaining ring; 43, third oil retaining ring; 44, third elastic retaining ring; 45, bearing gasket; 46, outer tube; 47, inner tube; 48, first profile bracket; 49, second profile bracket; 50, supporting wheel. DETAILED DESCRIPTION

[0025] The following specific embodiments are used to illustrate the embodiments of the present invention, and those skilled in the art can understand the features and functions of the present invention through the contents described in this specification. It should be noted that the drawings provided in the following embodiments are only for illustrative purposes, and are only schematic diagrams, not physical drawings, and cannot be understood as limitations of the present invention. In order to better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures in the drawings and their descriptions may be omitted.

[0026] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the figure. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the figures are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0027] like Figure 1-Figure 8 As shown, an embodiment of the present invention provides a coating device for the inner wall of a shell structure, which mainly includes a feeding device 1, a feeding port 2, a rotating device 3, a liquid infusion tube 4 and a multi-angle nozzle 5.

[0028] The infusion tube 4 is mainly used to transport the coating material. The infusion tube 4 specifically includes an inner tube 47 and an outer tube 46, wherein the outer tube 46 is sleeved outside the inner tube 47, and both ends of the outer tube 46 are connected to the inner tube 47 through bearings, so that the inner tube 47 can rotate relative to the outer tube 46.

[0029] Further, see Figure 1 On the outer surface of the outer tube 46 near the multi-angle nozzle 5, three support wheels 50 are evenly distributed along the circumference. The three support wheels 50 support the infusion tube 4 during the feeding process, supporting the infusion tube 4 to move in the shell structure to be processed, so that the infusion tube 4 always remains in the center position in the shell structure, thereby ensuring the spraying effect. It should be pointed out that Figure 8 The support wheel 50 is not shown in the infusion tube shown.

[0030] The multi-angle nozzle 5 is fixed at the front end of the inner tube 47 and is connected to the inner tube 47 for spraying the coating material conveyed by the inner tube 47 onto the inner wall of the shell structure to be processed, and the spraying angle of the multi-angle nozzle 5 is adjustable to adapt to the coating of complex areas.

[0031] The multi-angle nozzle 5 is composed of a nozzle body, i.e., a nozzle 34, and a connecting rod mechanism, wherein the connecting rod mechanism includes a first connecting rod 30, a second connecting rod 31, a third connecting rod 32, and a connecting body 33. Specifically, a spherical seat body is provided at the inlet end of the nozzle 34, and a ball head matched with the spherical seat body is provided at one end of the connecting body 33. The connecting body 33 and the nozzle 34 form a spherical hinge structure through the cooperation of the ball head and the spherical seat body, so as to ensure that the nozzle 34 can rotate relative to the connecting body 33. The other end of the connecting body 33 is fixedly connected to the end of the inner tube 47, for example, the connecting body 33 can be connected to the end of the inner tube 47 by a thread to facilitate disassembly, and the spherical seat body, the connecting body 33 and the ball head thereon are provided with a channel for the coating material to pass through, so as to ensure that the nozzle 34 is connected with the connecting body 33 and the inner tube 47. The second connecting rod 31 is fixed on the connecting body 33, and the third connecting rod 32 is fixedly connected to the nozzle 34. For example, the third connecting rod 32 can be fixedly connected to the nozzle 34 by two nuts. One end of the first connecting rod 30 is hinged to the second connecting rod 31, and the other end of the first connecting rod 30 is hinged to the third connecting rod 32. The nozzle 34 can rotate around the axis of the connecting body 33 under the stable support of the first connecting rod 30, the second connecting rod 31 and the third connecting rod 32 in combination with the cooperation of the ball head and the spherical seat body, so as to adjust the spraying angle of the nozzle 34. The nozzle 34 is driven to move by the linkage setting of the first connecting rod 30, the second connecting rod 31, the third connecting rod 32, the connecting body 33, etc., and the angle of the nozzle 34 is changed to achieve multi-angle control, so that the coating device can be coated to a complex coating area, thereby enhancing the working efficiency of the coating device on the inner wall of the shell structure.

[0032] The feed port 2 is communicated with the rear end of the inner tube 47 and is used to be connected to an external feed device through a metal hose connector to input the required coating material to the multi-angle nozzle 5 .

[0033] The feed port 2 is supported by the housing 35. The inner circumferential surface of the housing 35 is provided with two annular grooves. The second elastic retaining ring 40 and the third elastic retaining ring 44 are fixedly connected to the two annular grooves respectively. The fourth bearing 37 and the fifth bearing 38 are installed between the second elastic retaining ring 40 and the third elastic retaining ring 44. A bearing gasket 45 is fixed between the fourth bearing 37 and the fifth bearing 38. The axial spacing is achieved by the bearing gasket 45. The first elastic retaining ring 39 is installed on the side of the fifth bearing 38 away from the bearing gasket 45. The diameter of the first elastic retaining ring 39 is smaller than that of the second elastic retaining ring 40. On the side of the third elastic retaining ring 44 close to the inner tube 47, the first oil retaining ring 41, the second oil retaining ring 42 and the third oil retaining ring 43 are arranged adjacent to the third elastic retaining ring 44, wherein the first elastic retaining ring 39, the second elastic retaining ring 40, the third elastic retaining ring 44, the fourth bearing 37, the fifth bearing 38, the bearing gasket 45, the first oil retaining ring 41, the second oil retaining ring 42 and the third oil retaining ring 43 are all coaxially sleeved on the connecting shaft 36.

[0034] The feeding device 1 is connected to the outer tube 46 and is used to drive the infusion tube 4 to feed linearly at a uniform speed.

[0035] Specifically, the feeding device 1 includes a support frame 13 with rollers, a rack 7, a gear 6, a first stepped shaft 9, a first coupling 10, a first motor 11, a first connecting plate 28 and a first profile bracket 48. The feeding device 1 is supported by the first profile bracket 48, and a support plate is connected to the top of the corner brackets of the first profile bracket 48. The support plate is connected to the first connecting plate 28 through threaded connectors (such as screws, bolts, etc.), and the first connecting plate 28 is fixedly connected to the motor seat of the first motor 11. The output shaft of the first motor 11 is connected to one end of the first coupling 10, and the other end of the first coupling 10 is connected to one end of the first stepped shaft 9. The other end of the first stepped shaft 9 is fixedly connected to the gear 6, and the gear 6 is meshed with the rack 7, and the rack 7 is fixed on the outer tube 46. The support frame 13 is located below the outer tube 46 opposite to the rack 7, and the roller on the top of the support frame 13 contacts the surface of the outer tube 46 to support the movement of the outer tube 46 and reduce friction. By setting the first motor 11, the first coupling 10, the first stepped shaft 9, the gear 6, the rack 7, the support frame 13, etc., the first motor 11 drives the infusion tube 4 to feed through the first stepped shaft 9, the gear 6, the rack 7 and other components, thereby realizing the uniform speed movement of the multi-angle nozzle 5, making the coating device more stable during the feeding movement, and enhancing the consistency of the film thickness during coating by the coating device.

[0036] Further, see Figure 2The front and rear ends of the rack 7 are respectively fixedly connected to the corresponding block 8, the block 8 is connected to the corresponding connecting ring 12 through a stud, and the two connecting rings 12 are respectively fixedly connected to the outer tube 46.

[0037] The rotating device 3 is connected to the inner tube 47 and is used to drive the inner tube 47 to rotate around the axis, thereby driving the multi-angle nozzle 5 fixed thereon to rotate.

[0038] The rotating device 3 includes a housing 14, a first bevel gear 26, a second bevel gear 27, a second stepped shaft 22, a second coupling 15, a second motor 16, a second connecting plate 29, a slide 17, a slider 19, a slide rail 18, a support platform 20, a limit plate 21 and a second profile bracket 49, wherein the first bearing 23, the second bearing 24 and the third bearing 25 are respectively connected and fixed on the three sides of the housing 14, the first bearing 23 and the second bearing 24 are sleeved on the inner tube 47, the first bevel gear 26 is fixed on the inner tube 47 between the first bearing 23 and the second bearing 24, and the first bearing 23, the second bearing 24 and the first bevel gear 26 are all located inside the housing 14. One end of the second stepped shaft 22 passes through the third bearing 25 and is fixedly connected with the second bevel gear 27. The second bevel gear 27 meshes with the first bevel gear 26. The other end of the second stepped shaft 22 is fixedly connected with one end of the second coupling 15. The other end of the second coupling 15 is fixedly connected with the output shaft of the second motor 16. The second motor 16 is fixedly connected to the second connecting plate 29. The second connecting plate 29 is fixedly connected to the slide 17 through a threaded connection. The slide 17 is fixedly connected to the slider 19. The slider 19 slides with the slide rail 18. The slide rail 18 is fixedly connected to the support table 20. The support table 20 is fixedly connected to the second profile bracket 49, and the two ends of the support table 20 are respectively fixedly connected to the limit plates 21 to limit the slide 17.

[0039] Furthermore, the box body 14 and the slide 17 are connected by a lockable hinge (such as by bolt locking or spring buckle locking), so that the coating device is more stable when feeding forward, thereby improving the stability during the feeding process.

[0040] The working principle of the coating device of this embodiment is as follows:

[0041] When the coating device is used to coat the inner wall of the shell structure, first twist the nozzle 34 to move the third connecting rod 32, and the third connecting rod 32 then drives the nozzle 34 and the first connecting rod 30 to control the spraying angle of the multi-angle nozzle 5. After the angle adjustment is completed, the multi-angle nozzle 5 is connected to the inner tube 47 through a thread, and then the shell structure to be processed is moved to the stopper 8, and then the first motor 11 is connected to an external power supply, and the rotation of the output shaft of the first motor 11 is controlled to drive the first coupling 10 connected to the output shaft of the first motor 11 to rotate, and the first coupling 10 drives the first stepped shaft 9 connected thereto to rotate, and the rotation of the first stepped shaft 9 drives the gear 6 connected thereto to rotate, and the gear 6 drives the outer tube 46 connected to the rack 7 to feed through the engagement with the rack 7, and the outer tube 46 drives the connected inner tube 47 to feed through the bearing fixed between it and the inner tube 47, and the inner tube 47 drives the first bearing 23, the second bearing 24, the first bevel gear 26 and the feed port 2 connected thereto to feed forward. While the inner tube 47 is feeding forward, the first bearing 23 and the second bearing 24 drive the box body 14 to feed forward, the box body 14 drives the third bearing 25 to feed forward, the third bearing 25 drives the second coupling 15 and the second motor 16 connected to the second coupling 15 to feed forward together, and finally the slide 17 drives the connected slider 19 to slide on the slide rail 18, thereby realizing the uniform feeding of the coating device on the inner wall of the shell structure.

[0042] While feeding at a uniform speed, the second motor 16 in the rotating device 3 is connected to an external power supply, and the output shaft of the second motor 16 drives the second coupling 15 to rotate, and the second coupling 15 drives the second stepped shaft 22 to rotate, thereby rotating the second bevel gear 27 installed on the second stepped shaft 22, and the second bevel gear 27 drives the first bevel gear 26 to rotate under the meshing action, thereby driving the inner tube 47 to rotate around its axis, and the inner tube 47 then drives the multi-angle nozzle 5 and the feed port 2 fixed thereon to rotate together, finally realizing the multi-angle coating requirements of the coating device on the inner wall of the shell structure, and efficiently coating the complex areas of the inner wall of the shell structure such as grooves and corners.

[0043] The present invention significantly improves the uniformity and adaptability of the inner wall coating of the shell structure through innovative mechanical transmission and multi-angle adjustment design. The beneficial effects of the present invention are:

[0044] (1) In terms of feed control, the coating device for the inner wall of the shell structure proposed in the present invention utilizes the first motor to drive the gear to mesh with the rack, and combines the first stepped shaft and the first coupling to achieve uniform linear feeding of the infusion tube, effectively avoiding the speed fluctuation problem of traditional manual advancement, making the coating process more stable and controllable, thereby ensuring a high consistency of the coating film thickness, and further improving the stability of the coating process and the uniformity of the film thickness;

[0045] (2) In terms of coating of complex areas, the multi-angle nozzle of the present invention adopts a linkage mechanism composed of a first connecting rod, a second connecting rod, a third connecting rod and a connector, combined with the ball head-spherical seat matching structure of the connector and the nozzle, so that the nozzle can flexibly rotate around the axis of the connector, thereby realizing multi-angle control of the nozzle angle, so that the nozzle can flexibly cover complex areas such as grooves and corners on the inner wall of the shell structure, thereby significantly improving the working efficiency and coating quality of the coating device, and at the same time more adaptable to diversified processing needs, providing technical support for achieving rapid coating of high-quality complex structures.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A coating device for the inner wall of a shell structure, characterized in that: include: A liquid infusion tube (4) for conveying coating material, the liquid infusion tube (4) comprising an inner tube (47) and an outer tube (46), the outer tube (46) being sleeved on the outside of the inner tube (47) and connected to the inner tube (47) via a bearing, so that the inner tube (47) can rotate relative to the outer tube (46); A multi-angle spray head (5) connected to the front end of the inner tube (47) and having an adjustable spray angle, used for spraying the coating material onto the inner wall of the shell structure; A feed port (2) connected to the rear end of the inner tube (47) for inputting coating material; A feeding device (1) connected to the outer tube (46) and used to drive the infusion tube (4) to feed linearly at a uniform speed; The rotating device (3) connected to the inner tube (47) is used to drive the inner tube (47) to rotate around an axis.

2. The coating device according to claim 1, characterized in that: The multi-angle spray head (5) comprises a first connecting rod (30), a second connecting rod (31), a third connecting rod (32), a connecting body (33) and a nozzle (34); The inlet end of the nozzle (34) is provided with a spherical seat body, which cooperates with the ball head located at one end of the connecting body (33), and the other end of the connecting body (33) is fixedly connected to the end of the inner tube (47), and the nozzle (34), the connecting body (33) and the inner tube (47) are connected; The second connecting rod (31) is fixedly connected to the connecting body (33), the third connecting rod (32) is fixedly connected to the nozzle (34), the two ends of the first connecting rod (30) are hinged to the second connecting rod (31) and the third connecting rod (32) respectively, and the nozzle (34) rotates around the axis of the connecting body (33) under the action of the first connecting rod (30), the second connecting rod (31) and the third connecting rod (32) to adjust the spraying angle.

3. The coating device according to claim 2, characterized in that: The connecting body (33) and the inner tube (47) are connected via threads.

4. The coating device according to claim 2, characterized in that: The second connecting rod (31) is fixedly connected to the connecting body (33) via two nuts.

5. The coating device according to any one of claims 1 to 4, characterized in that: The feed port (2) comprises a connecting shaft (36) and a housing (35) sleeved on the outside of the connecting shaft (36), and further comprises a first elastic retaining ring (39), a second elastic retaining ring (40), a third elastic retaining ring (44), a fourth bearing (37), a fifth bearing (38), a bearing gasket (45), a first oil retaining ring (41), a second oil retaining ring (42) and a third oil retaining ring (43) coaxially sleeved on the connecting shaft (36); one end of the connecting shaft (36) is fixedly connected to the rear end of the inner tube (47); The inner circumferential surface of the housing (35) is provided with two annular grooves, on which the second elastic retaining ring (40) and the third elastic retaining ring (44) are fixed respectively, the fourth bearing (37) and the fifth bearing (38) are installed between the second elastic retaining ring (40) and the third elastic retaining ring (44), the bearing gasket (45) is installed between the fourth bearing (37) and the fifth bearing (38), the first elastic retaining ring (39) is located on a side of the fifth bearing (38) away from the bearing gasket (45), and the first oil retaining ring (41), the second oil retaining ring (42) and the third oil retaining ring (43) are all located on a side of the third elastic retaining ring (44) close to the inner tube (47).

6. The coating device according to any one of claims 1 to 4, characterized in that: The feeding device (1) comprises a support frame (13) with a roller, and also comprises a rack (7), a gear (6), a first stepped shaft (9), a first coupling (10), a first motor (11), a first connecting plate (28) and a first profile bracket (48); The rack (7) is fixed on the outer tube (46), the support frame (13) is located below the outer tube (46) opposite to the rack (7), and the roller is in contact with the surface of the outer tube (46) to support the outer tube (46); The first motor (11) is fixedly connected to the first profile bracket (48) via the first connecting plate (28) and a threaded connector; the output shaft of the first motor (11) is connected to one end of the first stepped shaft (9) via the first coupling (10); the gear (6) is fixed to the other end of the first stepped shaft (9), and the gear (6) is meshed with the rack (7).

7. The coating device according to claim 6, characterized in that: The front and rear ends of the rack (7) are respectively fixedly connected to corresponding blocks (8); each block (8) is fixedly connected to a corresponding connecting ring (12) via a stud; and the connecting ring (12) is fixedly connected to the outer tube (46).

8. The coating device according to any one of claims 1 to 4, characterized in that: The rotating device (3) comprises a housing (14), a first bevel gear (26), a second bevel gear (27), a second stepped shaft (22), a second coupling (15), a second motor (16), a second connecting plate (29), a slide table (17), a slider (19), a slide rail (18), a support table (20), a limit plate (21) and a second profile bracket (49); A first bearing (23), a second bearing (24) and a third bearing (25) are fixed on three side surfaces of the housing (14), respectively; the first bearing (23), the first bevel gear (26) and the second bearing (24) are respectively sleeved and fixed on the inner tube (47) in sequence and are located inside the housing (14); the second bevel gear (27) is meshed with the first bevel gear (26); the output shaft of the second motor (16) is connected to one end of the second stepped shaft (22) through the second coupling (15); the other end of the second stepped shaft (22) passes through the third bearing (25) and is fixedly connected to the second bevel gear (27); The second motor (16) is fixedly connected to the slide (17) via the second connecting plate (29) and the threaded connector; the slide (17) is fixedly connected to the slider (19); the slider (19) is slidably matched with the slide rail (18); the slide rail (18) is fixedly connected to the support platform (20); the support platform (20) is fixedly connected to the second profile bracket (49); and the limiting plates (21) for limiting the slide (17) are respectively fixed at both ends of the support platform (20).

9. The coating device according to claim 8, characterized in that: The box body (14) and the slide table (17) are connected via a lockable hinge.

10. The coating device according to any one of claims 1 to 4, characterized in that: Three support wheels (50) are evenly distributed circumferentially on the outer surface of the outer tube (46) at one end close to the multi-angle nozzle (5), and the support wheels (50) are used to support the infusion tube (4) during the feeding process.

Images