Thermal spraying working device

Abstract

The utility model provides a thermal spraying working device, which comprises a spray gun, a blowpipe, a yoke plate, a backing plate, a first hoop and a second hoop, the yoke plate is fixedly connected with the first hoop, the spray gun is clamped between the yoke plate and the first hoop, one side of the backing plate is hinged with the yoke plate, and the other side of the backing plate is hinged with the second hoop. The other side of the base plate is fixedly connected with the second hoop, and the blowpipe is clamped between the base plate and the second hoop. By the adoption of the technical scheme, when the workpiece is subjected to thermal spraying, cooled compressed air flow is conveyed to the surface of the workpiece through the blowing pipe, heat energy generated in the thermal spraying technological process is spread into the atmospheric environment through the cooling air flow, the surface of the workpiece is cooled in time, and therefore the situation that the surface of the workpiece is locally heated and burnt is avoided; compared with a water cooling mode, the air cooling mode has the advantages that the structure is simple, the requirement for the assembly precision of the cooling device is low, manufacturing is easy, and cooling airflow cannot cause negative effects on the thermal spraying process.

Description

Technical Field

[0001] The utility model belongs to the technical field of inspection instruments, and particularly relates to a thermal spraying working device. Background Art

[0002] After mechanical parts are manufactured and formed, generally, the surfaces of the mechanical parts need to be sprayed. The main purpose of spraying is to prevent the mechanical parts from rusting. When spraying the mechanical parts, in order to make the coating more easily adhere to the workpiece surface, the coating generally needs to be heated to a high temperature state. During the process of the coating adhering to the workpiece surface, the heat energy carried by the coating will also be transferred to the workpiece accordingly. Therefore, if the workpiece is not cooled in time, it is easy to cause thermal burns to the base material of the workpiece, affecting the quality of mechanical part products.

[0003] In the prior art, a patent document with the publication number of "CN113909016A" discloses a multi-combustion chamber high-power high-efficiency supersonic flame thermal spraying gun and its thermal spraying device. The spraying gun includes a gun body. A core unit including a Laval nozzle, several independent combustion chambers, and a gun barrel is arranged in the gun body, and a water-cooling jacket is arranged outside the gun body; the end of the divergent section of the Laval nozzle is fixedly connected to the gun barrel, and independent combustion chambers are evenly installed circumferentially in the middle section of the Laval nozzle. High-pressure air and spraying powder enter the cavity of the Laval nozzle from the tail of the Laval nozzle. The independent combustion chambers are used to inject and ignite the oil-gas mixture into the cavity of the Laval nozzle. A multi-channel double-layer water-cooling channel is formed among the water-cooling jacket, the gun body, and the core unit. By adopting the technical solution of this patent, when thermally spraying a workpiece, the spraying gun is cooled by a water-cooling method, so that the spraying gun is heated evenly, and then the heat energy transferred to the workpiece surface by the coating is relatively uniform, avoiding local overheating and burning of the base material of the workpiece to a certain extent and improving the quality of mechanical part products. However, the technical solution of this patent has a relatively complex structure, requires high structural precision, and is difficult to manufacture. The water-cooling method can only directly cool the spraying gun. If water leaks, it will affect the adhesion effect of the coating on the workpiece surface and the quality of mechanical part products. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a thermal spraying working device.

[0005] The utility model is achieved through the following technical solutions.

[0006] The utility model provides a thermal spraying working device, which includes a spray gun, a blowing air pipe, a connecting plate, a backing plate, a first hoop and a second hoop. The connecting plate is fixedly connected with the first hoop, and the spray gun is clamped between the connecting plate and the first hoop. One side of the backing plate is hinged to the connecting plate, and the other side of the backing plate is fixedly connected with the second hoop, and the blowing air pipe is clamped between the backing plate and the second hoop.

[0007] The fact that the backing plate is hinged to the connecting plate means that: a positioning hole is provided on the surface of the connecting plate, one end of a pin rod is fixedly connected with the backing plate, the other end of the pin rod is screwed with a locking nut, and the pin rod also penetrates through the positioning hole.

[0008] A limiting hole is provided on the surface of the first hoop or the second hoop, one end of a riveting column is fixedly connected with the connecting plate or the backing plate, the other end of the riveting column is screwed with a limiting nut, and the riveting column also penetrates through the corresponding limiting hole.

[0009] The limiting hole is an oval through hole.

[0010] The whole of the first hoop or the second hoop is in a shape of a capital letter "J".

[0011] An air outlet is provided at the end of the blowing air pipe, and the air outlet is rectangular.

[0012] The ratio of the length to the width of the air outlet is greater than 10:1.

[0013] The whole of the connecting plate is in a shape of a rectangular thin plate.

[0014] The beneficial effect of the utility model lies in that: by adopting the technical scheme of the utility model, when thermal spraying a workpiece, the cooled compressed air flow is sent to the surface of the workpiece through the blowing air pipe, and the cooling air flow spreads the heat energy generated in the thermal spraying process to the atmospheric environment, timely cools the surface of the workpiece, thereby avoiding local heat burn on the surface of the workpiece. Compared with the water cooling method, the air cooling method has a relatively simple structure, lower requirements for the assembly precision of the cooling device, is easier to manufacture, and the cooling air flow will not have a negative impact on the thermal spraying process, ensuring the quality of mechanical parts products. In addition, the angle of the flow direction of the cooling air flow relative to the surface of the workpiece can be flexibly adjusted, which helps to timely cool and dissipate heat from the locally overheated area on the surface of the workpiece. Description of the Drawings

[0015] Figure 1 is the front view of the utility model;

[0016] Figure 2 is the right view of the utility model;

[0017] Figure 3 is the front view of the connecting plate of the utility model.

[0018] In the figure: 1 - spray gun, 2 - air blowing pipe, 3 - connecting plate, 4 - backing plate, 5 - first hoop, 6 - second hoop, 7 - positioning hole, 8 - pin rod, 9 - locking nut, 10 - limiting hole, 11 - riveting post, 12 - limiting nut. Specific embodiments

[0019] The technical solution of the present invention will be further described below, but the scope of protection claimed is not limited thereto.

[0020] As Figure 1 、 Figure 2 and Figure 3 shown, the present invention provides a thermal spraying working device, including a spray gun 1, an air blowing pipe 2, a connecting plate 3, a backing plate 4, a first hoop 5 and a second hoop 6. The connecting plate 3 is fixedly connected to the first hoop 5, and the spray gun 1 is clamped between the connecting plate 3 and the first hoop 5. One side of the backing plate 4 is hinged to the connecting plate 3, and the other side of the backing plate 4 is fixedly connected to the second hoop 6, and the air blowing pipe 2 is clamped between the backing plate 4 and the second hoop 6.

[0021] Adopting the technical solution of the present invention, when thermal spraying a workpiece, the cooled compressed air flow is sent to the surface of the workpiece through the air blowing pipe. The cooling air flow dissipates the heat energy generated in the thermal spraying process into the atmospheric environment, timely cools the surface of the workpiece, thereby avoiding local heat burn on the surface of the workpiece. Compared with the water cooling method, the air cooling method has a relatively simple structure, lower assembly precision requirements for the cooling device, is easier to manufacture, and the cooling air flow will not have a negative impact on the thermal spraying process, ensuring the quality of mechanical parts products. In addition, the flow direction angle of the cooling air flow relative to the surface of the workpiece can be flexibly adjusted, which helps to timely cool and dissipate heat from the locally overheated area on the surface of the workpiece.

[0022] Specifically, the fact that the backing plate 4 is hinged to the connecting plate 3 means that: the surface of the connecting plate 3 is provided with a positioning hole 7. One end of the backing plate 4 is fixedly connected to a pin rod 8, the other end of the pin rod 8 is screwed with a locking nut 9, and the pin rod 8 also passes through the positioning hole 7. Adopting the technical solution of the present invention, the flow direction angle of the cooling air flow relative to the surface of the workpiece can be flexibly adjusted, which helps to timely cool and dissipate heat from the locally overheated area on the surface of the workpiece.

[0023] In addition, the surface of the first hoop 5 or the second hoop 6 is provided with a limiting hole 10. One end of the connecting plate 3 or the backing plate 4 is also fixedly connected to a riveting post 11, the other end of the riveting post 11 is screwed with a limiting nut 12, and the riveting post 11 also passes through the corresponding limiting hole 10. Preferably, the limiting hole 10 is an oval through hole. The first hoop 5 or the second hoop 6 is integrally in a U-shaped. The end of the air blowing pipe 2 is provided with an air outlet, and the air outlet is rectangular. The ratio of the length to the width of the air outlet is greater than 10:1. The connecting plate 3 is integrally in the shape of a rectangular thin plate.

Claims

1. A thermal spraying device, characterized in that: It includes a spray gun (1), a blowing air pipe (2), a connecting plate (3), a backing plate (4), a first hoop (5) and a second hoop (6). The connecting plate (3) is fixedly connected to the first hoop (5), and the spray gun (1) is clamped between the connecting plate (3) and the first hoop (5). One side of the backing plate (4) is hinged to the connecting plate (3), and the other side of the backing plate (4) is fixedly connected to the second hoop (6), and the blowing air pipe (2) is clamped between the backing plate (4) and the second hoop (6).

2. The thermal spraying device according to claim 1, characterized in that: The fact that the backing plate (4) is hinged to the connecting plate (3) means that: a positioning hole (7) is provided on the surface of the connecting plate (3), the backing plate (4) is fixedly connected to one end of a pin rod (8), the other end of the pin rod (8) is screwed with a locking nut (9), and the pin rod (8) also passes through the positioning hole (7).

3. The thermal spraying device according to claim 1, characterized in that: A limiting hole (10) is provided on the surface of the first hoop (5) or the second hoop (6), and the connecting plate (3) or the backing plate (4) is also fixedly connected to one end of a riveting post (11), the other end of the riveting post (11) is screwed with a limiting nut (12), and the riveting post (11) also passes through the corresponding limiting hole (10).

4. The thermal spraying device according to claim 3, characterized in that: The limiting hole (10) is an oval through hole.

5. The thermal spraying device according to claim 3, characterized in that: The first hoop (5) or the second hoop (6) is integrally in a shape of a capital letter "J".

6. The thermal spraying device according to claim 3, characterized in that: The end of the blowing air pipe (2) is provided with an air outlet, and the air outlet is rectangular.

7. The thermal spraying device according to claim 6, characterized in that: The ratio of the length to the width of the air outlet is greater than 10:

1.

8. The thermal spraying device according to any one of claims 1 to 3, characterized in that: The connecting plate (3) is integrally in a shape of a rectangular thin plate.

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