Cold spraying device

Abstract

The utility model discloses a cold spraying device, which relates to the field of spraying and comprises a control cabinet, a dust collector and a spraying mechanism. The dust collector is arranged on one side of the control cabinet and is used for collecting dust; the spraying mechanism is arranged on one side of the control cabinet and sprays parts. The spraying mechanism comprises a spraying machine, the spraying machine comprises a spraying main machine, the spraying main machine comprises a shell, and a spraying pipe mechanism and a heating mechanism are arranged in the shell; the spray pipe mechanism is a circular spray pipe mechanism or a flat spray pipe mechanism; one side of the spray pipe mechanism is connected with a sealing piece, and the sealing piece is connected with a nozzle; the lower portion of the spray pipe mechanism is provided with a powder supply port communicated with the spray nozzle. The cold spraying device has remarkable superiority in the aspects of operation convenience, coating effect, diversified application, environmental protection and the like.

Description

Technical Field

[0001] The utility model relates to the field of spraying, in particular to a cold spraying device. Background Art

[0002] Cold spraying technology, also known as "high-velocity particle consolidation technology", is based on the theories of aerodynamics and fluid mechanics. High-temperature and high-pressure gases (such as helium, neon, air, and other inert gases) are used to carry solid particles, and a supersonic gas-solid two-phase flow is generated through a Laval nozzle. These powder particles impact the metal surface at a high speed in a solid state and finally deposit on the metal surface to form a stable and dense metal coating, thereby improving the antioxidant and corrosion resistance of the metal surface. Cold spraying technology is widely used in fields such as aerospace, automotive manufacturing, electronics and electrical engineering, and shipbuilding industry, mainly for surface protection and repair, such as the anti-corrosion of aircraft engine parts, the coating treatment of automotive engine cylinder blocks, the conductive coating of electronic devices, and the anti-corrosion coating of ship hulls.

[0003] In the prior art, cold spraying devices usually mix unheated coating particles with heated air through a nozzle and form a supersonic jet through high-speed spraying, so that the coating particles are accelerated in the air and deposited on the substrate to form a coating. However, these traditional cold spraying devices have some obvious limitations. First, it is usually difficult to adapt to different coating requirements. The nozzle mechanism is single and cannot effectively adjust the spraying angle and spraying area, resulting in low coating uniformity and quality. Second, traditional cold spraying devices are less efficient when dealing with complex shapes and large-area coatings, affecting the production rhythm and economic benefits. In addition, these devices have high maintenance and servicing requirements and are inconvenient to operate, increasing the production cost and downtime. Finally, if the dust generated during the cold spraying process is not properly handled, it will cause environmental pollution and pose a threat to the health of operators. Summary of the Utility Model

[0004] In view of the problem that the cold spraying device in the above prior art cannot adapt to different coating requirements and results in low efficiency, a cold spraying device is provided.

[0005] The utility model is realized through the following technical solutions: A cold spraying device includes a control cabinet, a dust collector, and a spraying mechanism; the dust collector is arranged on one side of the control cabinet and is used for collecting dust; the spraying mechanism is arranged on one side of the control cabinet and sprays on parts.

[0006] The spraying mechanism includes a spraying machine, and the spraying machine includes a spraying main body. The spraying main body includes a housing, and a nozzle mechanism and a heating mechanism are arranged inside the housing; the nozzle mechanism is a circular nozzle mechanism or a flat nozzle mechanism; a sealing member is connected to one side of the nozzle mechanism, and the sealing member is connected to a nozzle; a powder feeding port communicating with the nozzle is arranged below the nozzle mechanism.

[0007] Preferably, the spraying mechanism further includes an actuator, a driving mechanism and a control system; the control system drives the actuator to move through the driving mechanism.

[0008] Preferably, a push switch for controlling the spraying state of the nozzle is provided at the lower part of the housing.

[0009] Preferably, when the nozzle mechanism is a circular nozzle mechanism, the nozzle mechanism includes a first bushing and a first nozzle; the first nozzle penetrates into the interior of the first bushing and is fixed to the first bushing by a locking screw.

[0010] Preferably, the powder feeding port is installed at the lower part of the first bushing and communicated with the nozzle.

[0011] Preferably, when the nozzle mechanism is a flat nozzle mechanism, the nozzle mechanism includes a second bushing, a second nozzle, an upper plate and a lower plate; the upper plate and the lower plate are installed on the second bushing to form a spraying channel; the second nozzle is arranged in the spraying channel through a knob mechanism.

[0012] Preferably, the powder feeding port is installed on the lower plate and communicated with the nozzle.

[0013] Preferably, the dust collector includes a cabinet body, a dust collection box, a dust suction port, a filtering unit, a fan unit, an air outlet and an electric control unit; the filtering unit is arranged inside the cabinet body, the dust suction port is arranged on one side of the cabinet body and connected with the filtering unit, the dust collection box is installed inside the cabinet body and located below the filtering unit; the fan unit is installed inside the cabinet body and located above the filtering unit; the air outlet is arranged at the upper part of the cabinet body; the electric control unit is installed on the cabinet body and connected with the fan unit.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The structure is compact, facilitating operation and maintenance: The spraying main machine is composed of a housing, a nozzle mechanism and a nozzle, with a compact overall design, which is convenient for users to operate and carry out maintenance work.

[0016] Improve the adhesion and uniformity of the coating: A heating mechanism is arranged inside the housing, which raises the temperature by heating the air to form a supersonic air jet, thereby enhancing the adhesion and uniformity of the coating.

[0017] Meet different coating requirements: The nozzle mechanism is designed in two types, circular and flat, which are respectively suitable for different coating requirements. The circular nozzle is suitable for spraying thick coatings in narrow or small areas, and the flat nozzle is suitable for coating and sandblasting cleaning on flat and cylindrical surfaces.

[0018] Powder feeding port design: A powder feeding port is provided at the lower part of the nozzle mechanism, which is connected to a powder feeder to ensure sufficient powder supply to the nozzle, thus forming a high-speed jet flow of particle-air mixture.

[0019] Enhanced operation flexibility and precision: A push switch is provided at the lower part of the housing to control the spraying state of the nozzle, enhancing the operation flexibility and precision.

[0020] Multiple application fields: Due to the characteristics of supersonic spraying and different nozzle mechanisms, this spraying device can be used in multiple application fields such as coating spraying, coating, sandblasting cleaning, etc.

[0021] Efficient dust collection: It can efficiently collect the dust generated during the spraying process and keep the working environment clean. Description of the drawings

[0022] Figure 1 is the overall structure schematic diagram of the present utility model.

[0023] Figure 2 is Figure 1 the side view in

[0024] Figure 3 is the schematic diagram of the spraying mainframe of the present utility model.

[0025] Figure 4 is the structural schematic diagram of the circular nozzle mechanism of the present utility model.

[0026] Figure 5 is the schematic diagram of the nozzle connection structure of the present utility model.

[0027] Figure 6 is the structural schematic diagram of the flat nozzle mechanism of the present utility model.

[0028] Figure 7 is the structural schematic diagram of the first axis of the actuator of the present utility model.

[0029] Figure 8 is the structural schematic diagram of the second axis of the actuator of the present utility model.

[0030] Figure 9 is the structural schematic diagram of the third axis of the actuator of the present utility model.

[0031] Figure 10 is the structural schematic diagram of the fourth axis of the actuator of the present utility model.

[0032] Figure 11 is the structural schematic diagram of the fifth axis of the actuator of the present utility model.

[0033] Figure 12 is the structural schematic diagram of the sixth axis of the actuator of the present utility model.

[0034] Figure 13 This is a schematic structural view of the dust collector of the present utility model.

[0035] Description of the reference numerals: 1, spraying main machine; 2, housing; 3, spray pipe mechanism; 4, seal; 5, nozzle; 6, powder feeding port; 7, first bushing; 8, first spray pipe; 9, second bushing; 10, second spray pipe; 11, upper plate; 12, lower plate; 13, knob mechanism; 14, push switch; 15, locking screw; 16, control cabinet; 17, actuator; 18, driving mechanism; 19, electronic control unit; 20, cabinet body; 21, dust collection box; 22, dust suction port; 23, filtering unit; 24, fan unit; 25, air exhaust port. Detailed implementation manners

[0036] The present utility model will be further described below with reference to the accompanying drawings through specific embodiments, but it is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0037] As shown in the reference drawings, the present utility model discloses a cold spraying device, including a control cabinet 16, a dust collector and a spraying mechanism; the control cabinet 16 adopts a gantry double-drive semi-closed structure, the dust collector is arranged on one side of the control cabinet 16 and is used for collecting dust; the spraying mechanism is arranged on one side of the control cabinet 16 and sprays on parts.

[0038] The spraying mechanism includes a spraying machine, an actuator 17, a driving mechanism 18 and a control system.

[0039] Specifically, the spraying machine includes a spraying main machine 1 and a compressed air machine; the spraying main machine 1 includes a housing 2, and a spray pipe mechanism 3 and a heating mechanism are arranged inside the housing 2, wherein the heating mechanism is an existing heating mechanism. A seal 4 is connected to one side of the spray pipe mechanism 3, and the seal 4 is connected to a nozzle 5; a powder feeding port 6 communicating with the nozzle 5 is arranged at the lower part of the spray pipe mechanism 3; a push switch 14 for controlling the spraying state of the nozzle 5 is arranged at the lower part of the housing 2; the seal 4 is of a threaded structure, and the nozzle 5 can be conveniently connected to the spray pipe mechanism 3 through the thread. When in use, when the air compressor provides compressed air to the spraying main machine 1, the inside of the housing 2 is heated by the heating mechanism, flows through the nozzle and the spray pipe mechanism 3 to form a supersonic air jet, the composite powder particles (supplied by the powder feeder connected to the powder feeding port 6) are introduced into this supersonic air jet and accelerated to supersonic speed. After the particles leave the nozzle, the high-speed particles adhere to the substrate to form a coating after being impacted.

[0040] In the above embodiments, since the quality of the spray coating and the success of the spraying process are extremely important for the cross-section (shape and size) and length of the nozzle. According to the application, the nozzle mechanism 3 of the present utility model is divided into a circular nozzle mechanism and a flat nozzle mechanism, both of which are fixed in the housing 2;

[0041] Specifically, when the nozzle mechanism 3 is a circular nozzle mechanism, the nozzle mechanism 3 includes a first bushing 7 and a first nozzle 8; the first nozzle 8 penetrates into the interior of the first bushing 7 and is fixed to the first bushing 7 by a locking screw 15; the powder feed port 6 is installed at the lower part of the first bushing 7 and communicates with the nozzle 5. The circular nozzle mechanism of the present utility model can be used for narrow or small areas where a thick coating needs to be accumulated. A circular nozzle should be used. This nozzle mechanism 3 is conducive to the formation of an air and powder mixture, and its acceleration is as high as supersonic speed, which can be used for spraying coatings.

[0042] When the nozzle mechanism 3 is a flat nozzle mechanism, the nozzle mechanism 3 includes a second bushing 9, a second nozzle 10, an upper plate 11 and a lower plate 12; the upper plate 11 and the lower plate 12 are installed on the second bushing 9 to form a spray channel; the second nozzle 10 is arranged in the spray channel through a knob mechanism 13; the powder feed port 6 is installed on the lower plate 12 and communicates with the nozzle 5; the flat nozzle mechanism is mainly used for the coating and sandblasting cleaning of cylindrical surfaces and flat surfaces. This nozzle generates an air and powder mixture, accelerates it to supersonic speed, and then forms a strip-shaped coating with a bandwidth of 9 - 11 mm.

[0043] Since a heating mechanism is provided inside the housing of this spraying machine, the air is heated by the heating mechanism, which increases the temperature of the air, helps to form a supersonic air jet, and improves the adhesion and uniformity of the coating; the adaptability of different nozzle mechanisms, the nozzle mechanism is designed into two types: circular and flat, which are respectively suitable for different coating requirements. The circular nozzle is suitable for narrow or small areas where a thick coating needs to be accumulated, while the flat nozzle is suitable for coating and sandblasting cleaning of flat surfaces and cylindrical surfaces; a powder feed port is arranged at the lower part of the nozzle mechanism, which is connected to a powder feeder to ensure sufficient powder supply to the nozzle, so as to form a jet flow of high-speed particles mixed with air; a push switch is arranged at the lower part of the housing, which is used to control the spraying state of the nozzle, enhancing the flexibility and accuracy of operation. Therefore, due to the characteristics of supersonic spraying and different nozzle mechanisms, this spraying device can be used in various application fields such as spraying coatings, coating, and sandblasting cleaning.

[0044] In the above embodiments, the actuator 17 includes six shafts, and each shaft is driven by a motor equipped with a reducer. The movement modes and directions of each shaft are different;

[0045] One shaft is the part connecting the base, mainly bearing the weight of the upper shaft and the left - right rotation of the base.

[0046] The second axis controls the forward and backward swing of the robot's main arm and the up and down movement of the entire main arm.

[0047] The third axis also controls the forward and backward swing function of the robot, but the swing arm range is smaller than that of the second axis.

[0048] The fourth axis controls the part of the circular tube on the industrial robot that can rotate freely.

[0049] The fifth axis controls the up and down flipping movement of the fine adjustment. Usually, it is the movement that can flip the product after the product is grasped.

[0050] The sixth axis is the end axis and can rotate 360°.

[0051] The seventh axis is an extended rotation axis.

[0052] The drive mechanism 18 includes six servo drivers and six servo motors. The drive mechanism 18 controls the rotational movement of the actuator 17 through the control system, and then reaches the robotic arm through the speed reducer to achieve the free movement of the six axes. When in use, this goal can be achieved through the following two methods. "Teaching and playback" method: Teach the manipulator how to move through two methods, namely, through the "teaching box" or manually. The controller memorizes the teaching process, and then the robot repeats the teaching actions cyclically according to the memory, such as the spraying robot. "Programmable control" method: The staff pre-compiles the control program according to the robot's work tasks and movement trajectories in advance, and then inputs the control program into the robot's controller. Start the control program, and the robot will complete the actions step by step according to the program specified. If the task changes, just modify or recompile the control program.

[0053] The dust collector includes a cabinet 20, a dust collection box 21, a dust suction port 22, a filtration unit 23, a fan unit 24, an air discharge port 25, and an electric control unit 19; the filtration unit 23 is disposed inside the cabinet 20, the dust suction port 22 is disposed on one side of the cabinet 20 and connected to the filtration unit 23, the dust collection box 21 is installed inside the cabinet 20 and located below the filtration unit 23; the fan unit 24 is installed inside the cabinet 20 and located above the filtration unit 23; the air discharge port 25 is disposed at the upper part of the cabinet; the electric control unit 19 is installed on the cabinet 20 and connected to the fan unit 24. When in use, after the dust is captured through the dust suction port and enters the filtration unit, the dust-containing air enters the cabinet through the uniform flow device of the dust suction port 22 connected to the filtration unit. First, it encounters the spoiler in the middle of the filtration unit 23. Due to the sudden expansion of the air flow cross-section and the action of the spoiler, a part of the coarse particles in the air flow directly settle to the dust collection box 21; the fine and low-density dust particles are filtered by the filter cartridge with a filtration effect as high as 99% when the air flow passes through the filtration unit 23, are intercepted on the surface of the filter cartridge, and are back-blown into the dust collection box 21 by the pulse back-blowing structure. The purified gas enters the clean air chamber and is re-discharged into the workshop through the air discharge port 25.

[0054] In the above embodiment, the cabinet 20 is made of 2-mm-thick SPCC cold-rolled steel sheet (the main load-bearing part uses 4-5-mm steel sheet) to ensure the structural strength of the machine; the sheet metal is cut by laser, and the processing technology is precise to ensure the accuracy of the machine size; the surface is treated with high-temperature (up to 220°C) electrostatic powder spray painting to make the surface coating of the workpiece uniform and improve the surface treatment quality to ensure the beauty and durability of the machine.

[0055] The fan unit 24 uses a Siemens motor + impeller from Germany, adopts a vertical motor installation structure, and has an integrated compact design. While ensuring the air volume and negative pressure, it reduces the floor area of the machine and has the advantages of stable operation and economy.

[0056] The filtration unit 23 is a single-filter-cartridge filtration unit for the GHDC-15W industrial dust collector, adopts a horizontal insertion installation method, and a spoiler is installed at the air inlet to directly drop the large-particle dust entering the filtration unit 23 into the dust collection box 21, achieving a pre-dust removal effect. There is no need to add a large-particle splash spark catcher such as a pre-stage cyclone device, reducing the investment and operating costs of the entire set of equipment, and reducing the filtration air velocity reaching the surface of the filter cartridge, increasing the filtration effect. The filter cartridge material is a waterproof and oil-proof filter material, which can increase the durability of the machine and prevent the filter cartridge from being blocked by dust. The filtration area of a single filter cartridge is 8 m2. On the basis of ensuring the filtration area, it greatly reduces the floor area of the machine, and the horizontal insertion installation can effectively reduce the overall height of the machine, which is especially suitable for use in areas with limited space.

[0057] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A cold spraying device, characterized in that, It includes a control cabinet (16), a dust collector and a spraying mechanism; the dust collector is arranged on one side of the control cabinet (16) and is used for collecting dust; the spraying mechanism is arranged on one side of the control cabinet (16) and sprays on parts. The spraying mechanism includes a spraying machine, and the spraying machine includes a spraying main body (1). The spraying main body (1) includes a housing (2), and a spray pipe mechanism (3) and a heating mechanism are arranged inside the housing (2); the spray pipe mechanism (3) is a circular spray pipe mechanism or a flat spray pipe mechanism; a seal (4) is connected to one side of the spray pipe mechanism (3), and the seal (4) is connected to a nozzle (5); a powder feeding port (6) communicating with the nozzle (5) is arranged at the lower part of the spray pipe mechanism (3).

2. The cold spraying device according to claim 1, characterized in that, The spraying mechanism further includes an actuating mechanism (17), a driving mechanism (18) and a control system; the control system drives the actuating mechanism (17) to move through the driving mechanism (18).

3. The cold spraying device according to claim 1, characterized in that, A pressing switch (14) for controlling the spraying state of the nozzle (5) is arranged at the lower part of the housing (2).

4. The cold spraying device according to claim 3, wherein, When the spray pipe mechanism (3) is a circular spray pipe mechanism, the spray pipe mechanism (3) includes a first bushing (7) and a first spray pipe (8); the first spray pipe (8) penetrates into the inside of the first bushing (7) and is fixed to the first bushing (7) by a locking screw (15).

5. The cold spraying device according to claim 4, characterized in that, The powder feeding port (6) is installed at the lower part of the first bushing (7) and communicates with the nozzle (5).

6. The cold spraying device according to claim 1, characterized in that, When the spray pipe mechanism (3) is a flat spray pipe mechanism, the spray pipe mechanism (3) includes a second bushing (9), a second spray pipe (10), an upper plate (11) and a lower plate (12); the upper plate (11) and the lower plate (12) are installed on the second bushing (9) to form a spraying channel; the second spray pipe (10) is arranged in the spraying channel through a knob mechanism (13).

7. The cold spraying device according to claim 6, characterized in that, The powder feeding port (6) is installed on the lower plate (12) and communicates with the nozzle (5).

8. The cold spraying device according to claim 1, wherein The dust collector includes a cabinet body (20), a dust collection box (21), a dust suction port (22), a filtering unit (23), a fan unit (24), an air outlet (25) and an electric control unit (19); the filtering unit (23) is arranged inside the cabinet body (20), the dust suction port (22) is arranged on one side of the cabinet body (20) and is connected to the filtering unit (23), the dust collection box (21) is installed inside the cabinet body (20) and is located below the filtering unit (23); the fan unit (24) is installed inside the cabinet body (20) and is located above the filtering unit (23); the air outlet (25) is arranged at the upper part of the cabinet body; the electric control unit (19) is installed on the cabinet body (20) and is connected to the fan unit (24).

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