PVD (Physical Vapor Deposition) coating machine with uniform coating

Abstract

The invention discloses a uniform-coating PVD coating machine, and relates to the technical field of coating cutters, the uniform-coating PVD coating machine specifically comprises a storage table and a spraying cover with the internal capacity capable of being freely adjusted, and the spraying cover is arranged on the storage table. The volume in the spraying cover can be freely adjusted, and the blank space in the spraying cover is reduced as much as possible during PVD spraying, so that the spraying loss of the PVD coating machine is reduced, and the spraying cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of coated cutting tool technology, specifically a PVD coating machine for uniform coating. Background Technology

[0002] Coated cutting tools are prepared by applying a thin layer of wear-resistant refractory metal or non-metallic compound to the surface of a high-strength and tough cemented carbide or high-speed steel substrate using a vapor deposition method. The coating acts as a chemical and thermal barrier, reducing diffusion and chemical reactions between the tool and the workpiece, thereby reducing substrate wear. Coated cutting tools possess characteristics such as high surface hardness, good wear resistance, stable chemical properties, heat and oxidation resistance, low coefficient of friction, and low thermal conductivity. The physical processing methods for tool coatings are divided into CVD coating and PVD coating. PVD coating involves deposition of the coating at temperatures below 600 degrees Celsius. However, during tool coating adhesion, multiple batches are typically used, which can easily lead to localized unevenness due to differences in location. To address this issue, a multi-layer PVD coating device for cutting tools is proposed.

[0003] The patent specification with patent number CN218812026U discloses a multi-layer PVD coating device for cutting tools. The application includes a coating device body, a stand, a rotating disk, a mounting bracket, and placement components. It enables the cutting tool cylinder, which rotates around the stand, to rotate itself, thereby ensuring that the cutting tool cylinder is heated evenly inside the coating device body and improving the coating effect.

[0004] However, since the internal volume of the coating device in the existing technology is fixed, there will be a lot of blank space during the spraying operation, which will cause a large amount of spraying loss and increase the spraying cost, especially when only a few tools are sprayed, which will cause a lot of spraying loss. Summary of the Invention

[0005] The purpose of this invention is to provide a PVD coating machine with uniform coating to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A PVD coating machine with uniform coating includes a platform and a spray hood with freely adjustable internal capacity, the spray hood being disposed on the platform.

[0008] Preferably, the spray coating cover includes multiple vertically arranged columns and multiple linkage mechanisms arranged between the columns for column linkage. The top of the column is slidably connected to a horizontally arranged guide rod. The number of guide rods is the same as that of the columns and they are all evenly distributed around the connecting plate. The guide rods are radially parallel to the connecting plate.

[0009] Preferably, the sides and top of the spray coating cover are sewn with flexible sealing cloth.

[0010] Preferably, one end of the guide rod facing the connecting plate is fixedly connected to the connecting plate, and the other end of the guide rod is fixedly connected to a limit block, which is used to prevent the column from separating from the guide rod.

[0011] Preferably, the linkage mechanism is an X-shaped linkage, which consists of two intersecting links with their middle parts hinged together. Each of the four ends of the X-shaped linkage is fixedly connected to a corner block. The X-shaped linkage has a free end and a fixed end. The fixed end of the X-shaped linkage is hinged to the column, and the free end of the X-shaped linkage is slidably connected to the column.

[0012] Preferably, the angle between the corner block and the connecting rod is the angle of the interior angle of a polygon formed by multiple columns.

[0013] Preferably, the platform includes a base and multiple concentrically arranged rotating ring assemblies on the base. The rotating ring assemblies are used to place the tool holder and spraying hood to be sprayed. The bottom surface of the rotating ring assembly is fixedly connected to the top end of a vertically arranged pneumatic rod. The bottom end of the pneumatic rod is fixedly connected to the base. The corresponding rotating ring assembly is selected according to the size of the tool holder. When selecting, the corresponding pneumatic rod is driven to lift the rotating ring assembly. At this time, the spraying hood can be freely adjusted to be the same size as the rotating ring assembly outside the rotating ring assembly, so that the spraying hood is as similar as possible to the size of the tool holder.

[0014] Preferably, the rotating ring assembly includes a rotating ring, a lifting ring, and slots. The bottom surface of the lifting ring is fixedly connected to the top end of the pneumatic rod, and the top surface of the lifting ring is rotatably connected to the rotating ring. Multiple slots are evenly provided on the rotating ring.

[0015] Preferably, the number of slots is the same as the number of columns, and the slots in all rotating ring assemblies are in corresponding positions to form a sliding groove for the columns to slide.

[0016] Preferably, a fixing ring is fixedly connected to the base, the fixing ring including all rotating ring assemblies and being concentrically arranged with the rotating ring assemblies.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention, by allowing the capacity of the spray hood to be freely adjusted, minimizes the blank space inside the spray hood during PVD spraying, thereby reducing spraying losses and lowering spraying costs.

[0019] This invention improves the coating effect and uniformity of the cutters on the cutter holder by setting up a platform so that the cutter holder to be sprayed rotates simultaneously during the spraying process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a PVD coating machine that produces a uniform coating.

[0021] Figure 2 This is a schematic diagram of the spray hood in a PVD coating machine for uniform coating.

[0022] Figure 3 This is a schematic diagram of the structure between the columns in a PVD coating machine for uniform coating.

[0023] Figure 4 This is a schematic diagram of the structure of the stage in a PVD coating machine with uniform coating.

[0024] Figure 5 This is an exploded view of the stage in a PVD coating machine for uniform coating.

[0025] Figure 6 This is a schematic diagram of the rotating ring assembly in a PVD coating machine for uniform coating.

[0026] Figure 7 This is a schematic diagram of the base structure in a PVD coating machine for uniform coating.

[0027] As shown in the figure: 1. Display platform; 11. Base; 12. Fixed ring; 13. Rotating ring assembly; 131. Rotating ring; 132. Lifting ring; 133. Slot; 14. Pneumatic rod; 2. Spraying hood; 21. Column; 22. Linkage mechanism; 23. Guide rod; 24. Connecting plate; 25. Corner block; 26. Slider; 27. X-shaped connecting rod. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-7 In this embodiment of the invention, a PVD coating machine with uniform coating includes a platform 1 and a spray hood 2 with freely adjustable internal capacity, wherein the spray hood 2 is disposed on the platform 1.

[0030] This invention, by allowing the capacity of the spray hood to be freely adjusted, minimizes the blank space inside the spray hood during PVD spraying, thereby reducing spraying losses and lowering spraying costs.

[0031] The spray coating cover 2 includes multiple vertically arranged columns 21 and multiple linkage mechanisms 22 arranged between the columns 21 for linkage of the columns 21. The top of the column 21 is slidably connected to the horizontally arranged guide rod 23. The number of guide rods 23 is the same as that of the columns 21 and they are all evenly distributed around the connecting plate 24. The guide rods 23 are radially parallel to the connecting plate 24.

[0032] Flexible sealing cloth (not shown in the figure) is sewn onto the sides and top of the spray coating hood 2.

[0033] When adjusting the size of the internal space of the spray hood 2, the column 21 is moved along the guide rod 23, and the size of the overall spray hood 2 is adjusted by adjusting the distance between the columns 21.

[0034] One end of the guide rod 23 facing the connecting plate 24 is fixedly connected to the connecting plate 24, and the other end of the guide rod 23 is fixedly connected to a limit block. The limit block is used to prevent the column 21 from separating from the guide rod 23.

[0035] The linkage mechanism 22 is an X-shaped linkage 27, which is composed of two intersecting links with their middle parts hinged together. Each of the four ends of the X-shaped linkage 27 is fixedly connected to a corner block 25. The X-shaped linkage 27 is divided into a free end and a fixed end. The fixed end of the X-shaped linkage 27 is hinged to the column 21, and the free end of the X-shaped linkage 27 is slidably connected to the column 21.

[0036] By setting up a linkage mechanism, the columns 21 are linked together. When one column 21 is moved, all columns 21 move synchronously, making adjustment more convenient and faster.

[0037] The angle between the corner block 25 and the connecting rod is the angle of the interior angle of the polygon formed by multiple columns 21.

[0038] The platform 1 includes a base 11 and multiple concentrically arranged rotating ring assemblies 13 disposed on the base 11. The rotating ring assemblies 13 are used to place the tool holder to be sprayed and the spray cover 2. The bottom surface of the rotating ring assembly 13 is fixedly connected to the top end of the vertically arranged pneumatic rod 14. The bottom end of the pneumatic rod 14 is fixedly connected to the base 11. The corresponding rotating ring assembly 13 is selected according to the size of the tool holder. When selecting, the corresponding pneumatic rod 14 is driven to lift the rotating ring assembly 13. At this time, the spray cover 2 can be freely adjusted to be the same size as the rotating ring assembly 13 outside the rotating ring assembly 13, so that the spray cover 2 is as similar as possible to the size of the tool holder.

[0039] By setting up the platform 1, the tool holder is supported by the raised rotating ring assembly 13 and a limit is formed. When the column 21 is moved, the column 21 moves to the rotating ring assembly 13 outside the raised rotating ring assembly 13.

[0040] The rotating ring assembly 13 includes a rotating ring 131, a lifting ring 132, and a slot 133. The bottom surface of the lifting ring 132 is fixedly connected to the top end of the pneumatic rod 14, and the top surface of the lifting ring 132 is rotatably connected to the rotating ring 131. Multiple slots 133 are evenly provided on the rotating ring 131.

[0041] The number of slots 133 is the same as that of columns 21, and the positions of the slots 133 in all rotating ring assemblies 13 correspond to each other, forming a sliding groove for the columns 21 to slide.

[0042] A fixing ring 12 is fixedly connected to the base 11. The fixing ring 12 includes all the rotating ring assemblies 13 and is concentrically arranged with the rotating ring assemblies 13.

[0043] Although the present invention 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 the present invention should be included within the protection scope of the present invention. Furthermore, the contents not described in detail in this specification are all prior art known to those skilled in the art.

Claims

1. A PVD coating machine for uniform coating, characterized in that, It includes a shelf (1) and a spray hood (2) with freely adjustable internal capacity, the spray hood (2) being mounted on the shelf (1).

2. The PVD coating machine for uniform coating as described in claim 1, characterized in that, The spray hood (2) includes multiple vertically arranged columns (21) and multiple linkage mechanisms (22) arranged between the columns (21) for linkage of the columns (21). The top of the column (21) is slidably connected to the horizontally arranged guide rod (23). The number of guide rods (23) is the same as that of the columns (21) and they are all evenly distributed around the connecting plate (24). The guide rods (23) are radially parallel to the connecting plate (24).

3. The PVD coating machine for uniform coating as described in claim 2, characterized in that, The sides and top of the spray coating cover (2) are sewn with flexible sealing cloth.

4. The PVD coating machine for uniform coating as described in claim 2, characterized in that, The guide rod (23) is fixedly connected to the connecting plate (24) at one end and to the connecting plate (24) at the other end. A limit block is fixedly connected to the other end of the guide rod (23). The limit block is used to prevent the column (21) from separating from the guide rod (23).

5. A PVD coating machine for uniform coating as described in claim 2, characterized in that, The linkage mechanism (22) is an X-shaped linkage (27), which is composed of two intersecting links and the middle of the links are hinged to each other. The four ends of the X-shaped linkage (27) are fixedly connected with corner blocks (25). The X-shaped linkage (27) is divided into a free end and a fixed end. The fixed end of the X-shaped linkage (27) is hinged to the column (21), and the free end of the X-shaped linkage (27) is slidably connected to the column (21).

6. A PVD coating machine for uniform coating as described in claim 5, characterized in that, The angle between the corner block (25) and the connecting rod is the angle of the interior angle of the polygon formed by multiple columns (21).

7. The PVD coating machine for uniform coating according to claim 1, characterized in that, The platform (1) includes a base (11) and multiple concentrically arranged rotating ring assemblies (13) on the base (11). The rotating ring assembly (13) is used to place the tool holder to be sprayed and the spray cover (2). The bottom surface of the rotating ring assembly (13) is fixedly connected to the top of the vertically arranged pneumatic rod (14). The bottom end of the pneumatic rod (14) is fixedly connected to the base (11). The corresponding rotating ring assembly (13) is selected according to the tool holder of different sizes. When selecting, the corresponding pneumatic rod (14) is driven to lift the rotating ring assembly (13). At this time, the spray cover (2) can be freely adjusted to be the same size as the rotating ring assembly (13) outside the rotating ring assembly (13), so that the spray cover (2) is as similar as possible to the size of the tool holder.

8. A PVD coating machine for uniform coating according to claim 7, characterized in that, A fixing ring (12) is fixedly connected to the base (11). The fixing ring (12) includes all the rotating ring assemblies (13) and is concentrically arranged with the rotating ring assemblies (13).

9. A PVD coating machine for uniform coating according to claim 7, characterized in that, The rotating ring assembly (13) includes a rotating ring (131), a lifting ring (132), and a slot (133). The bottom surface of the lifting ring (132) is fixedly connected to the top end of the pneumatic rod (14). The top surface of the lifting ring (132) is rotatably connected to the rotating ring (131). Multiple slots (133) are evenly provided on the rotating ring (131).

10. A PVD coating machine for uniform coating according to claim 9, characterized in that, The number of slots (133) is the same as that of the columns (21), and the slots (133) in all rotating ring assemblies (13) are in corresponding positions to form a sliding groove for the columns (21) to slide.

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