An alloy cutting tool coating deposition device

Abstract

This utility model relates to the field of alloy tool coating deposition technology, and in particular to an alloy tool coating deposition device, including a device shell, a high-pressure nitrogen chamber, a heating element, a high-pressure airflow nozzle, a rotating shaft, a tool clamping mechanism, an inner ring coating nozzle, and an outer ring coating nozzle. Through the synergistic effect of the sealed heat-insulating shell, high-pressure nitrogen, heating element, rotating shaft, and multi-layer coating nozzles, uniform and high-quality coating deposition is achieved. After the tool is fixed in the spirally arranged clamping mechanism, the device is first heated to a suitable temperature to ensure that the coating liquid is fully evaporated. The initial coating is formed by spraying from the inner ring nozzle. Subsequently, the outer ring nozzle, combined with high-pressure airflow, performs optimized deposition, so that the coating particles are uniformly attached, while removing excess droplets, improving coating density and surface quality. Finally, through low-speed rotation curing and controlled cooling, an alloy tool with strong adhesion and excellent wear resistance is obtained.

Description

Technical Field

[0001] This utility model relates to the field of alloy tool coating deposition technology, and in particular to an alloy tool coating deposition device. Background Technology

[0002] Alloy tool coating technology is widely used to improve the wear resistance and service life of cutting tools. However, uneven coating has always been a key challenge affecting coating quality and tool performance. In existing spraying technologies, the distribution of spray droplets is often uneven, resulting in a coating of varying thickness on the tool surface. This uneven coating may cause some areas of the tool to have an excessively thin coating, failing to provide effective wear protection, or even leading to coating peeling or cracking.

[0003] Uneven coating is usually caused by a number of factors during the spraying process, such as variations in the distance and angle between the nozzle and the tool surface, and the spray speed, leading to uneven droplet distribution. Furthermore, airflow interference can also affect coating deposition, causing excessive or insufficient deposition in certain areas, thus impacting coating quality and adhesion.

[0004] Currently, although some new equipment attempts to address the problem of uneven coating by improving spraying devices and optimizing spraying parameters, uneven coating remains a common problem in coating technology, directly affecting the performance and service life of cutting tools. Therefore, it is essential to design an alloy cutting tool coating deposition device that improves coating uniformity and coating quality. Utility Model Content

[0005] The purpose of this invention is to provide an alloy cutting tool coating deposition device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an alloy tool coating deposition device, comprising a device shell, a high-pressure nitrogen tank, a heating element, a high-pressure airflow nozzle, a rotating shaft, a tool clamping mechanism, an inner ring coating nozzle and an outer ring coating nozzle. The device shell is a closed structure and is fixedly connected to the high-pressure nitrogen tank. The high-pressure nitrogen tank stores high-pressure nitrogen and is connected to the high-pressure airflow nozzle inside the device shell through a pipeline.

[0007] According to the above technical solution, the high-pressure airflow nozzle is arranged along the side wall of the device housing and is provided with multiple injection ports, which are located at 1 / 3, 2 / 3 and the top of the bottom wall, respectively.

[0008] According to the above technical solution, the inner ring coating nozzle and the outer ring coating nozzle are located at the bottom of the device housing.

[0009] According to the above technical solution, the diameter of the inner ring coating nozzle is larger than the diameter of the rotating shaft and smaller than the diameter of the outer ring coating nozzle.

[0010] According to the above technical solution, the outer ring coating nozzle is arranged around the inner ring coating nozzle, and its diameter is larger than the diameter of the rotating shaft and the tool clamping mechanism.

[0011] According to the above technical solution, the inner ring coating nozzle and the outer ring coating nozzle are distributed in a circular shape with the rotation axis as the center.

[0012] According to the above technical solution, the bottom of the device housing is also provided with two heating elements, which are arranged diagonally.

[0013] According to the above technical solution, a rotating shaft is provided at the bottom center of the device housing.

[0014] According to the above technical solution, there are several tool clamping mechanisms on the rotating shaft, and the tool clamping mechanisms are arranged in a spiral shape from the upper end of the rotating shaft to the bottom end of the rotating shaft.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, through the synergistic effect of the inner and outer ring coating nozzles and combined with high-pressure air jet, enables the coating liquid to be uniformly deposited on the surface of the tool, avoiding the problem of excessive thickness or unevenness in some areas, thereby improving the uniformity of the coating. Secondly, the use of high-pressure nitrogen gas to assist in deposition effectively removes excess droplets, reduces deposition defects, improves the density and bonding strength of the coating, and enhances adhesion. In addition, the heating element ensures that the cavity maintains a stable temperature field, prevents the coating liquid from condensing, improves the coating quality, and gradually cools down after deposition to avoid the coating cracking or peeling due to a sudden drop in temperature.

[0016] In terms of deposition efficiency, the device employs a helical tool clamping mechanism, ensuring that each tool is fully exposed within the spray range. The low-speed rotation of the rotating shaft guarantees uniform coating coverage of the tool surface, avoiding unevenness caused by obstruction. Simultaneously, high-pressure nitrogen, as an inert gas, not only aids in uniform coating deposition but also effectively isolates oxygen, preventing oxidation of the coating material and improving coating quality and durability. Furthermore, the device's temperature and airflow parameters can be adjusted according to different coating materials, making it suitable for coating various alloy tools and enhancing the equipment's versatility and applicability. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1This is a side view of an alloy cutting tool coating deposition apparatus proposed in this utility model;

[0019] Figure 2 This is an internal structural diagram of an alloy cutting tool coating deposition device proposed in this utility model;

[0020] Figure 3 This is a structural diagram of the inner ring coating nozzle and the outer ring coating nozzle in an alloy tool coating deposition device proposed in this utility model.

[0021] In the figure: 1. Device casing, 2. High-pressure nitrogen chamber, 3. Heating element, 4. High-pressure airflow nozzle, 5. Rotating shaft, 51. Tool clamping mechanism, 6. Inner ring coating nozzle, 7. Outer ring coating nozzle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example:

[0024] Reference Figure 1-3An alloy tool coating deposition apparatus includes a housing 1, a high-pressure nitrogen tank 2, a heating element 3, a high-pressure gas flow nozzle 4, a rotating shaft 5, a tool clamping mechanism 51, an inner ring coating nozzle 6, and an outer ring coating nozzle 7. The housing 1 is a closed structure made of heat-insulating material to reduce the influence of the external environment on the coating deposition process and maintain a stable temperature field inside the apparatus. Its side is fixedly connected to the high-pressure nitrogen tank 2, which stores high-pressure nitrogen gas and is connected to the high-pressure gas flow nozzle 4 inside the housing 1 through a pipeline. The high-pressure gas flow nozzle 4 is arranged along the side wall of the housing 1 and has multiple injection ports located at 1 / 3, 2 / 3, and 1 / 3 of the distance from the bottom wall and the top, respectively, for spraying high-pressure nitrogen gas to improve coating uniformity and reduce impurity adhesion. The bottom of the housing 1 is provided with the inner ring coating nozzle 6 and the outer ring coating nozzle 7. The coating nozzle 7, inner ring coating nozzle 6, and outer ring coating nozzle 7 are distributed in a circular shape with the rotating shaft 5 as the center. The diameter of the inner ring coating nozzle 6 is larger than the diameter of the rotating shaft 5 but smaller than the diameter of the outer ring coating nozzle 7. It is used to spray coating liquid to initially form a coating. The outer ring coating nozzle 7 is set around the inner ring coating nozzle 6 and has a diameter larger than the diameter of the rotating shaft 5 and the tool clamping mechanism 51. The coating liquid sprayed by it will not be directly deposited on the tool surface, but will be deposited with the assistance of high-pressure airflow to improve the uniformity of the coating. Two heating elements 3 are also provided at the bottom of the device housing 1, which are arranged diagonally. The rotating shaft 5 is located at the middle of the bottom of the device housing 1 and is driven by a stepper motor. There are several tool clamping mechanisms 51 on the rotating shaft 5. The tool clamping mechanisms 51 are arranged in a spiral shape from the upper end of the rotating shaft 5 to the bottom end of the rotating shaft 5.

[0025] When using this device, pretreatment is first performed. The alloy cutting tools to be coated are sequentially fixed onto the tool clamping mechanism 51. Since the tool clamping mechanism 51 adopts a spiral arrangement structure, the surface of each tool can be exposed within the spraying range, avoiding mutual obstruction. Then, the heating element 3 is activated to heat the inside of the device, maintaining the cavity temperature within a suitable deposition range (usually 200-500℃, the specific temperature depends on the coating material) to ensure sufficient evaporation and uniform adhesion of the coating solution, while reducing condensation and improving coating quality. Subsequently, preliminary coating deposition is performed. After the temperature stabilizes, the rotating shaft 5 starts to rotate, driving the alloy cutting tools on the tool clamping mechanism 51 to rotate at a low speed. At this time, the inner ring coating nozzle 6 is activated, spraying the coating solution from the bottom upwards to form the first initial coating layer. The spraying process continues until the tool rotates one revolution, then stops. Next, high-pressure airflow-assisted deposition is performed. After the base coating is completed, the outer ring coating nozzle 7 and the high-pressure airflow nozzle 4 are simultaneously activated for coating optimization. The outer ring coating nozzle 7 sprays the coating liquid. Because its spray diameter is larger than the range of the rotating shaft 5 and the tool clamping mechanism 51, the sprayed coating liquid does not directly adhere to the tool surface but is suspended in the deposition chamber, forming fine atomized particles. The high-pressure airflow nozzle 4 sprays nitrogen gas. The impact force of the high-pressure airflow causes the suspended coating atomized particles to adhere evenly to the tool surface, while removing excess droplets to prevent uneven or excessively thick coatings. Since nitrogen is an inert gas, it does not chemically react with the coating material, thus reducing deposition defects and improving deposition density and surface quality. After the coating liquid spraying is complete, the rotating shaft 5 continues to rotate at a low speed to ensure uniform curing of the coating. Simultaneously, the heating element 3 gradually cools down, controlling the cooling rate to prevent sudden temperature drops that could cause coating cracking or peeling.

[0026] Once the coating reaches the preset curing level, stop all spraying processes and slowly reduce the internal temperature of the device to allow the tool to cool gradually. Finally, remove the tool to obtain a uniformly deposited, strongly adhered, and highly wear-resistant alloy tool.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An alloy cutter coating deposition device, comprising a device housing (1), a high-pressure nitrogen gas tank (2), a heating element (3), a high-pressure gas flow nozzle (4), a rotating shaft (5), a cutter clamping mechanism (51), an inner ring coating nozzle (6) and an outer ring coating nozzle (7), characterized in that: The outer shell (1) of the device is a closed structure and is fixedly connected to the high-pressure nitrogen tank (2). The high-pressure nitrogen tank (2) stores high-pressure nitrogen and is connected to the high-pressure airflow nozzle (4) inside the outer shell (1) of the device through a pipeline.

2. The alloy cutting tool coating deposition apparatus according to claim 1, characterized in that: The high-pressure airflow nozzle (4) is arranged along the side wall of the device housing (1) and is provided with multiple injection ports, located at 1 / 3, 2 / 3 and the top of the bottom wall respectively.

3. The alloy cutting tool coating deposition apparatus according to claim 1, characterized in that: The inner ring coating nozzle (6) and the outer ring coating nozzle (7) are located at the bottom of the device housing (1).

4. The alloy cutting tool coating deposition apparatus according to claim 3, characterized in that: The diameter of the inner ring coating nozzle (6) is greater than the diameter of the rotating shaft and less than the diameter of the outer ring coating nozzle (7).

5. The alloy cutting tool coating deposition apparatus according to claim 4, characterized in that: The outer ring coating nozzle (7) is located around the inner ring coating nozzle (6), and its diameter is larger than the diameter of the rotating shaft (5) and the tool clamping mechanism (51).

6. The alloy cutting tool coating deposition apparatus according to claim 4, characterized in that: The inner ring coating nozzle (6) and the outer ring coating nozzle (7) are distributed in a circular shape with the rotation axis (5) as the center.

7. The alloy cutting tool coating deposition apparatus according to claim 1, characterized in that: The bottom of the outer casing (1) of the device is also provided with two heating elements (3), which are arranged diagonally.

8. The alloy cutting tool coating deposition apparatus according to claim 1, characterized in that: A rotating shaft (5) is provided at the middle of the bottom end of the outer casing (1) of the device.

9. The alloy cutting tool coating deposition apparatus according to claim 8, characterized in that: The rotating shaft (5) has several tool clamping mechanisms (51), which are arranged in a spiral shape from the upper end of the rotating shaft (5) to the bottom end of the rotating shaft (5).

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