A device for coating high temperature protective coating on aircraft engine nozzle

Abstract

The present invention relates to the field of aircraft parts processing, specifically a high-temperature protective coating coating device for aircraft engine nozzles, including a base, a coating box and a conveyor belt for conveying nozzle blanks are arranged on the base, a pump wheel is fixed on the coating box, and the pump wheel is connected to the conveyor belt in a transmission manner, and a plurality of clamping mechanisms for supporting nozzle blanks and simulated protrusions corresponding to the clamping mechanisms and adapted to the nozzle blanks are arranged on the conveyor belt, a bracket is fixed on the base, and a ring frame is fixedly connected to the bracket through a suspension rod, and a plurality of nozzles for spraying the surface of the nozzle blank are arranged on the ring frame, and a valve cylinder is fixed on the ring frame, and the valve cylinder is respectively connected to the pump wheel, the coating box and each nozzle through a pipeline. This aircraft engine nozzle high-temperature protective coating coating device facilitates the clamping and removal of the nozzle blank, realizes automatic adjustment of the nozzle spraying distance to the nozzle blank according to the diameter change of the nozzle blank, improves the degree of automation, and ensures the spraying quality.

Description

Technical Field

[0001] The invention relates to the field of aircraft parts processing, in particular to a high-temperature protective coating coating device for an aircraft engine nozzle. Background Art

[0002] The engine nozzle needs to work at high temperature for a long time, so it is necessary to spray a high-temperature protective coating on its surface to improve its working stability and reliability under high temperature conditions. At present, when spraying the high-temperature protective coating on the surface of the engine nozzle, it is not convenient to pick up and place the workpiece, and because the nozzle surface is usually not straight along the axial direction, the distance between the spray nozzle and the nozzle surface is not easy to adjust, which easily leads to uneven surface spraying. In view of this, we propose a high-temperature protective coating coating device for aircraft engine nozzles. Summary of the invention

[0003] The purpose of the present invention is to provide a high-temperature protective coating coating device for an aircraft engine nozzle to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A high-temperature protective coating coating device for an aircraft engine nozzle, comprising a base, a coating box and a conveyor belt for conveying a nozzle blank are arranged on the base, a pump wheel is fixed on the coating box, and the pump wheel is connected to the conveyor belt in a transmission manner, and the conveyor belt is provided with a plurality of groups of clamping mechanisms for supporting the nozzle blank and simulated protrusions corresponding to the clamping mechanisms and adapted to the nozzle blank, a bracket is fixed on the base, and the bracket is fixedly connected to a ring frame through a suspension rod, and a plurality of nozzles for spraying the surface of the nozzle blank are arranged on the ring frame, and a valve cylinder is fixed on the ring frame, and the valve cylinder is respectively connected to the pump wheel, the coating box and each nozzle through a pipeline.

[0004] Preferably, the lower end of the stand is fixed on the base, and the upper end of the stand is horizontally fixed with a frame, both ends of the frame are rotatably connected with rollers, and the two rollers are connected by a conveyor belt transmission, and the multiple clamping mechanisms are arranged at equal intervals along the length of the conveyor belt.

[0005] Preferably, the clamping mechanism includes a group of relatively arranged support rods, and the support rods are vertically fixedly connected to the conveyor belt, and a notch is opened on the ring frame for avoiding the support rods. A plurality of the simulated protrusions are arranged corresponding to each group of support rods and are detachably fixed on the conveyor belt, and both ends of the simulated protrusions are integrally fixed with a slope structure.

[0006] Preferably, a horizontally arranged sliding rod is relatively fixed to the upper end of each group of support rods, a sliding sleeve is provided on the sliding rod, the sliding sleeve is connected to the support rod through spring 1, a plurality of claws are provided on the periphery of the sliding rod, and the claws are hinged to the end of the corresponding sliding rod away from the support rod through connecting rod 1, and the claws are hinged to the outer peripheral wall of the corresponding sliding sleeve through connecting rod 2.

[0007] Preferably, the upper end of the impeller shaft in the pump wheel is connected to one of the rollers through a bevel gear set, the upper end wall of the paint box is provided with a filling port, the internal fixed axis rotation of the paint box is connected to the stirring shaft, and the lower end of the impeller shaft is connected to the stirring shaft, and a pipe one is fixed and connected to the peripheral wall of the pump wheel, and the inlet end of the pipe one is connected to the bottom of the paint box.

[0008] Preferably, a valve stem is inserted and slidably connected in the valve cylinder, and the upper end of the valve stem is connected to the inner upper end of the valve cylinder through spring 2, a roller is hinged at the lower end of the valve stem, and valve hole 1 and valve hole 2 are opened on the valve stem according to upper and lower positions.

[0009] Preferably, a plurality of slide cylinders are fixed on the ring frame at equal intervals along the circumferential direction, and the plurality of slide cylinders are arranged one-to-one correspondingly to the plurality of nozzles, a piston plate is slidably connected inside the slide cylinder, and the piston plate is fixedly connected to the corresponding nozzle through a push-pull rod, and the spraying direction of the nozzle points to the center of the ring frame.

[0010] Preferably, the cavity in the slide cylinder on the side of the piston plate away from the push-pull rod is filled with gas, the cavity in the valve cylinder on the upper side of the valve stem is filled with gas, and the cavity in the valve cylinder on the upper side of the valve stem is connected to the cavity in the slide cylinder on the side of the piston plate away from the push-pull rod through an air pipe.

[0011] Preferably, through hole one and through hole two corresponding to valve hole one are formed on the side wall of the valve cylinder, and through hole three and through hole four corresponding to valve hole two are also formed on the side wall of the valve cylinder.

[0012] Preferably, one port of the tee is connected to the outlet end of pipe one, and the other two ports are connected to through hole one and through hole three through branch pipe one and branch pipe two respectively. Through hole two is connected to each nozzle through branch pipe three, and through hole four is connected to the upper part of the paint box through a return pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, by arranging a plurality of clamping mechanisms on the conveyor belt, it is convenient to clamp and remove the nozzle blank, which saves time and effort, and can realize the entire spraying of the outer surface of the nozzle blank, thereby improving the spraying effect and efficiency.

[0015] In the present invention, the pump wheel drives the conveyor belt to synchronously convey the nozzle blank while conveying the high-temperature protective coating, and can simultaneously stir the high-temperature protective coating in real time. On the one hand, it can realize automatic adjustment of the spraying distance of the nozzle to the nozzle blank according to the diameter change of the nozzle blank, thereby improving the spraying quality and making the spray pattern of each part of the nozzle blank more uniform. On the other hand, it improves the degree of automation and ensures the spraying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the general assembly cross-sectional structure of the present invention;

[0017] Figure 2 for Figure 1 A is an enlarged structural diagram;

[0018] Figure 3 for Figure 2 Schematic diagram of CC cross-section structure;

[0019] Figure 4 for Figure 2 Schematic diagram of the BB cross-section structure.

[0020] In the figure: 1, base; 2, stand; 3, frame; 4, roller; 5, conveyor belt; 6, simulated protrusion; 7, bracket; 8, paint box; 9, filling port; 10, pump wheel; 11, bevel gear set; 12, pipeline 1; 13, stirring shaft; 14, return pipe; 15, suspension rod; 16, ring frame; 17, valve cylinder; 18, valve stem; 19, roller; 20, support rod; 21, slide rod; 22, sliding sleeve; 23, Spring one; 24, claw; 25, connecting rod one; 26, connecting rod two; 27, notch; 28, slide; 29, piston plate; 30, push-pull rod; 31, nozzle; 32, spring two; 33, air pipe; 34, three-way pipe; 35, branch pipe one; 36, branch pipe two; 37, branch pipe three; 38, valve hole one; 39, valve hole two; 40, through hole one; 41, through hole two; 42, through hole three; 43, through hole four. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 4 The present invention provides a technical solution: a high-temperature protective coating device for an aircraft engine nozzle, comprising a base 1, a coating box 8 and a conveyor belt 5 for conveying a nozzle blank are arranged on the base 1, a pump wheel 10 is fixed on the coating box 8, and the pump wheel 10 is transmission-connected to the conveyor belt 5, and the conveyor belt 5 is provided with a plurality of clamping mechanisms for supporting the nozzle blank and simulated protrusions 6 corresponding to the clamping mechanisms and adapted to the nozzle blank are arranged on the conveyor belt 5, a bracket 7 is fixed on the base 1, and a ring frame 16 is fixedly connected to the bracket 7 through a suspension rod 15, a plurality of nozzles 31 for spraying the surface of the nozzle blank are arranged on the ring frame 16, a valve cylinder 17 is fixed on the ring frame 16, and the valve cylinder 17 is respectively connected to the pump wheel 10, the coating box 8 and each nozzle 31 through a pipeline.

[0023] In this embodiment, the lower end of the stand 2 is fixed on the base 1, and the upper end of the stand 2 is horizontally fixed with a frame 3, both ends of the frame 3 are rotatably connected with rollers 4, and the two rollers 4 are connected by a conveyor belt 5, and the multiple clamping mechanisms are arranged at equal intervals along the length of the conveyor belt 5.

[0024] In this embodiment, the clamping mechanism includes a group of relatively arranged support rods 20, and the support rods 20 are vertically fixedly connected to the conveyor belt 5. A notch 27 for avoiding the support rods 20 is opened on the ring frame 16. A plurality of simulated protrusions 6 are arranged corresponding to each group of support rods 20 and are detachably fixed on the conveyor belt 5, and both ends of the simulated protrusions 6 are integrally fixed with a slope structure. A horizontally arranged sliding rod 21 is relatively fixed to the upper end of each group of the support rods 20. A sliding sleeve 22 is sleeved on the sliding rod 21, and the sliding sleeve 22 is connected to the support rod 20 through a spring 1 23. A plurality of claws 24 are arranged on the periphery of the sliding rod 21, and the claws 24 are hinged to the end of the corresponding sliding rod 21 away from the support rod 20 through a connecting rod 1 25, and the claws 24 are hinged to the outer peripheral wall of the corresponding sliding sleeve 22 through a connecting rod 26.

[0025] In this embodiment, the upper end of the impeller shaft in the pump wheel 10 is connected to one of the rollers 4 through a bevel gear set 11, a filling port 9 is provided on the upper end wall of the paint box 8, the internal fixed axis rotation of the paint box 8 is connected to the stirring shaft 13, and the lower end of the impeller shaft is connected to the stirring shaft 13, a pipe 12 is fixed and connected to the peripheral wall of the pump wheel 10, and the inlet end of the pipe 12 is connected to the bottom of the paint box 8.

[0026] In this embodiment, a valve stem 18 is inserted and slidably connected in the valve cylinder 17, and the upper end of the valve stem 18 is connected to the inner upper end of the valve cylinder 17 through a spring 2 32, and a roller 19 is hinged at the lower end of the valve stem 18. A valve hole 1 38 and a valve hole 2 39 are opened on the valve stem 18 according to the upper and lower positions. A plurality of slide cylinders 28 are fixed at equal intervals along the circumferential direction on the ring frame 16, and the plurality of slide cylinders 28 are arranged one by one corresponding to the plurality of nozzles 31. A piston is slidably connected in the slide cylinder 28. Plate 29, and the piston plate 29 is fixedly connected to the corresponding nozzle 31 through a push-pull rod 30, and the injection direction of the nozzle 31 points to the center of the ring frame 16, the cavity in the slide cylinder 28 on the side of the piston plate 29 away from the push-pull rod 30 is filled with gas, and the cavity in the valve cylinder 17 on the upper side of the valve stem 18 is filled with gas, and the cavity in the valve cylinder 17 on the upper side of the valve stem 18 is communicated with the cavity in the slide cylinder 28 on the side of the piston plate 29 away from the push-pull rod 30 through an air pipe 33.

[0027] In this embodiment, a through hole 1 40 and a through hole 2 41 corresponding to the valve hole 1 38 are provided on the side wall of the valve cylinder 17, and a through hole 3 42 and a through hole 43 corresponding to the valve hole 2 39 are also provided on the side wall of the valve cylinder 17. One port of the three-way pipe 34 is connected to the outlet end of the pipeline 12, and the other two ports are connected to the through hole 1 40 and the through hole 3 42 through the branch pipe 1 35 and the branch pipe 2 36 respectively. The through hole 2 41 is connected to each nozzle 31 through the branch pipe 37, and the through hole 43 is connected to the upper part of the paint box 8 through the return pipe 14.

[0028] Working principle and advantages of the present invention: When the aircraft engine nozzle high temperature protective coating coating device is used, the working process is as follows:

[0029] like Figure 1 and Figure 2 As shown, the high temperature protective paint is added into the paint box 8 through the filling port 9, and it is assumed that the conveyor belt 5 in the present application runs in the counterclockwise direction. The nozzle blank is installed on the clamping mechanism at the right end of the conveyor belt 5. During installation, the sliding sleeve 22 is held and the spring 1 23 is compressed in the direction close to the corresponding support rod 20, so that each claw 24 is close to the sliding rod 21, and then one end of the nozzle blank is inserted into the sliding rod 21, and the sliding sleeve 22 is loosened and the sliding sleeve 22 is moved away from the corresponding support rod 20 under the restoring force of the spring 1 23, so that each claw 24 is pressed against the inner wall of the nozzle blank, and the nozzle blank is installed on the other support rod 20 according to the same operation, thereby completing the installation of the nozzle blank. After the spraying of the nozzle blank surface is completed, at the left end of the conveyor belt 5, the sliding sleeve 22 is held and compressed in the direction of the corresponding support rod 20 to compress the spring 23, so that each claw 24 is close to the sliding rod 21, so that the claw 24 releases the nozzle blank, and then the nozzle blank is removed from the other support rod 20 according to the same operation. The operation is simple and convenient, which is convenient for clamping and removing the nozzle blank, saving time and effort, and can realize the entire spraying of the outer surface of the nozzle blank, thereby improving the spraying effect and efficiency. The simulated protrusion 6 adopts a detachable installation, which is convenient for corresponding replacement according to the structure of different nozzle blanks, and when installing the nozzle blank, it should be adjusted to correspond to the position of the simulated protrusion 6.

[0030] As described above, after the nozzle blank is installed, the pump wheel 10 is started to work, so that the pump wheel 10 extracts the high temperature protective paint in the paint box 8 through the pipe 12, and the impeller shaft inside the pump wheel 10 drives the roller 4 to rotate counterclockwise through the bevel gear set 11, so that the roller 4 drives the conveyor belt 5 to run counterclockwise, and the conveyor belt 5 drives the nozzle blank to move left through the clamping mechanism, as shown in FIG. Figure 3 and Figure 4As shown, when the nozzle blank is ready to pass through the center of the ring frame 16, the roller 19 passes through the end slope structure of the simulated protrusion 6 and rolls to the upper surface of the simulated protrusion 6. At this time, the valve stem 18 moves up, and the valve hole 2 39 is disconnected from the through hole 3 42 and the through hole 4 43, while the valve hole 1 38 is connected with the through hole 1 40 and the through hole 2 41, so that the pump wheel 10 transports the high-temperature protective coating through the pipeline 12 through the three-way pipe 34, the branch pipe 1 35, the through hole 1 40, the valve hole 1 38, the through hole 2 41, and the branch pipe 3 37 to each nozzle 31, and then sprays it onto the outer peripheral wall of the nozzle blank.

[0031] When the roller 19 passes over the upper surface of the simulated protrusion 6, it follows the surface ups and downs of the simulated protrusion 6 and moves up and down under the action of the spring 2 32, so that the valve stem 18 applies a compressive force and a suction force to the interior of the upper cavity. When the valve stem 18 moves upward, that is, the diameter of the nozzle blank becomes smaller, the valve stem 18 squeezes the gas in the upper cavity, so that the gas enters each slide cylinder 28 through the air pipe 33, so that the gas in the slide cylinder 28 increases and drives the nozzle 31 to the nozzle blank through the piston plate 29 and the push-pull rod 30. When the valve stem 18 moves downward, that is, the diameter of the nozzle blank increases, the valve stem 18 draws the gas in each slide cylinder 28 into the cavity on the upper part of the valve stem 18 through the air pipe 33, thereby reducing the gas in the slide cylinder 28 and driving the nozzle 31 to move away from the diameter increase point of the nozzle blank through the piston plate 29 and the push-pull rod 30, thereby realizing automatic adjustment of the spraying distance of the nozzle 31 to the nozzle blank according to the change in the diameter of the nozzle blank, thereby improving the spraying quality and making the spray pattern of each part of the nozzle blank more uniform.

[0032] When the roller 19 rolls down the simulated protrusion 6, the valve stem 18 moves downward, so that the valve hole 2 39 is connected with the through hole 3 42 and the through hole 4 43, and the valve hole 1 38 is not connected with the through hole 1 40 and the through hole 2 41. When the pump wheel 10 is working, the impeller shaft inside it synchronously drives the stirring shaft 13 to rotate to stir the high-temperature protective coating inside the coating box 8, so as to keep the high-temperature protective coating always mixed evenly during spraying, and when the roller 19 leaves the simulated protrusion 6 and rolls on the conveyor belt 5, the pump wheel 10 conveys the high-temperature protective coating to the coating box 8 through the three-way pipe 34, the branch pipe 2 36, the through hole 3 42, the valve hole 2 39, the through hole 43, and the reflux pipe 14 through the pipeline 12, so as to form a circulating flow and stirring, thereby improving the stirring effect, thereby realizing real-time stirring of the high-temperature protective coating while spraying and feeding, and ensuring the spraying quality.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A device for coating a high temperature protective coating on an aircraft engine nozzle, comprising a base (1), characterized in that: The base (1) is provided with a paint box (8) and a conveyor belt (5) for conveying the nozzle blank, the paint box (8) is fixed with a pump wheel (10), and the pump wheel (10) is connected to the conveyor belt (5) in a driving manner, the conveyor belt (5) is provided with a plurality of clamping mechanisms for supporting the nozzle blank and simulated protrusions (6) corresponding to the clamping mechanisms and matching the nozzle blank, the base (1) is fixed with a bracket (7), and the bracket (7) is fixedly connected to a ring frame (16) via a suspension rod (15), the ring frame (16) is provided with a plurality of nozzles (31) for spraying the surface of the nozzle blank, the ring frame (16) is fixed with a valve cylinder (17), and the valve cylinder (17) is respectively connected to the pump wheel (10), the paint box (8) and each nozzle (31) through a pipeline; The lower end of the stand (2) is fixed on the base (1), and the upper end of the stand (2) is horizontally fixed with a frame (3), both ends of the frame (3) are rotatably connected to rollers (4), and the two rollers (4) are connected by a conveyor belt (5), and a plurality of clamping mechanisms are arranged at equal intervals along the length of the conveyor belt (5); The clamping mechanism comprises a group of supporting rods (20) arranged opposite to each other, and the supporting rods (20) are vertically fixedly connected to the conveyor belt (5); a notch (27) for avoiding the supporting rods (20) is provided on the ring frame (16); a plurality of simulated protrusions (6) are arranged corresponding to each group of supporting rods (20) and are detachably fixed to the conveyor belt (5); and both ends of the simulated protrusions (6) are integrally fixed with a slope structure; A horizontally arranged sliding rod (21) is fixed to the upper end of each group of the supporting rods (20) in a relative manner, a sliding sleeve (22) is sleeved on the sliding rod (21), the sliding sleeve (22) is connected to the supporting rod (20) via a spring 1 (23), a plurality of claws (24) are arranged on the periphery of the sliding rod (21), and the claws (24) are hinged to one end of the corresponding sliding rod (21) away from the supporting rod (20) via a connecting rod 1 (25), and the claws (24) are hinged to the outer peripheral wall of the corresponding sliding sleeve (22) via a connecting rod 2 (26); The upper end of the impeller shaft in the pump wheel (10) is connected to one of the rollers (4) through a bevel gear set (11); the upper end wall of the paint box (8) is provided with a filling port (9); the interior of the paint box (8) is connected to a stirring shaft (13) in a fixed axis rotation manner; and the lower end of the impeller shaft is connected to the stirring shaft (13); a pipe 1 (12) is fixed to the peripheral wall of the pump wheel (10) and is connected to the pipe 1, and the inlet end of the pipe 1 (12) is connected to the bottom of the paint box (8).

2. The aircraft engine nozzle high temperature protective coating coating device according to claim 1, characterized in that: A valve stem (18) is inserted into and slidably connected to the valve cylinder (17), and the upper end of the valve stem (18) is connected to the inner upper end of the valve cylinder (17) via a second spring (32). A roller (19) is hingedly connected to the lower end of the valve stem (18). A valve hole 1 (38) and a valve hole 2 (39) are formed on the valve stem (18) at upper and lower positions.

3. The aircraft engine nozzle high temperature protective coating coating device according to claim 2, characterized in that: A plurality of slide cylinders (28) are fixed on the ring frame (16) at equal intervals along the circumferential direction, and the plurality of slide cylinders (28) are arranged in one-to-one correspondence with the plurality of nozzles (31). A piston plate (29) is slidably connected inside the slide cylinder (28), and the piston plate (29) is fixedly connected to the corresponding nozzle (31) via a push-pull rod (30), and the spraying direction of the nozzle (31) points to the center of the ring frame (16).

4. The aircraft engine nozzle high temperature protective coating coating device according to claim 3, characterized in that: The cavity in the slide cylinder (28) located on the side of the piston plate (29) away from the push-pull rod (30) is filled with gas, and the cavity in the valve cylinder (17) located on the upper side of the valve stem (18) is filled with gas, and the cavity in the valve cylinder (17) located on the upper side of the valve stem (18) is connected to the cavity in the slide cylinder (28) located on the side of the piston plate (29) away from the push-pull rod (30) through the air pipe (33).

5. The aircraft engine nozzle high temperature protective coating coating device according to claim 2, characterized in that: The side wall of the valve cylinder (17) is provided with a through hole 1 (40) and a through hole 2 (41) corresponding to the valve hole 1 (38). The side wall of the valve cylinder (17) is also provided with a through hole 3 (42) and a through hole 4 (43) corresponding to the valve hole 2 (39).

6. The aircraft engine nozzle high temperature protective coating coating device according to claim 5, characterized in that: One port of the three-way pipe (34) is connected to the outlet end of the pipe 1 (12), and the other two ports are connected to the through hole 1 (40) and the through hole 3 (42) through the branch pipe 1 (35) and the branch pipe 2 (36), respectively. The through hole 2 (41) is connected to each nozzle (31) through the branch pipe 3 (37), and the through hole 4 (43) is connected to the upper part of the paint box (8) through the return pipe (14).

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