A PVD coating installation based on a milling cutter and a coating process thereof

Abstract

The application relates to the technical field of milling cutter PVD coating, and discloses a PVD coating equipment based on a milling cutter and a coating process thereof, which comprises a coating unit, a blowing ash unit and an air extraction unit; the coating unit comprises a coating equipment, a placing component for containing the milling cutter arranged in a working cavity of the coating equipment and an air extraction component arranged on the coating equipment; the blowing ash unit comprises an air inlet pipe arranged on the coating equipment and communicated with the working cavity of the coating equipment, a blowing ash component arranged in the working cavity of the coating equipment and a sealing component; the application removes the undesirable impurities attached to the milling cutter before plating, improves the plating film quality, prevents the impurities in the external environment from being attached to the milling cutter, automatically cleans the filter screen and prevents the filter screen from being blocked by dust to form air inlet of the air inlet pipe.

Description

Technical Field

[0001] This invention relates to the technical field of PVD coating for milling cutters, and more particularly to a PVD coating device and coating process based on milling cutters. Background Technology

[0002] PVD is a physical material transfer process that can transfer atomic or molecular matter from one object to another, thereby giving it superior performance. In the production of milling cutters, in order to improve the service life of the milling cutters, PVD coating equipment is used to vacuum coat the surface of the milling cutters in a vacuum environment, which can form a film layer with wear resistance and corrosion resistance.

[0003] Patent CN214763997U discloses a PVD coating device with pre-filtration function, including a coating device. A filter box is fixedly connected to the top left side of the coating device. An installation plate is fixedly connected to the inner cavity of the filter box. A collection box is provided at the bottom of the installation plate. The front side of the collection box extends to the front side of the filter box. A slag discharge port is opened in the middle of the top of the installation plate. Reciprocating screws are movably connected to the front and rear sides of the top of the installation plate.

[0004] Patent CN216779154U discloses a PVD coating spraying device for improving the surface strength of milling cutters, relating to the field of spraying device technology. It includes a table and a transmission assembly. The transmission assembly is bolted onto the table. The transmission assembly includes a crossbar, a bearing sleeve, a first motor, a hollow tube, a rotating shaft, a base sleeve, a rotating seat, and a spraying table. A bearing sleeve is provided below the crossbar, and a first motor is provided below one end of the bearing sleeve.

[0005] In the above patents, when the equipment is used to vacuum coat the milling cutter, the cleanliness of the milling cutter surface directly affects the coating effect. However, if the surface treatment of the milling cutter before coating is insufficient, there will be dust spots, lint and other impurities on the surface. These impurities will result in poor coating quality. It is difficult to remove these impurities attached to the milling cutter by relying solely on the suction force generated during the vacuum pumping process. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] In view of the problem that existing milling cutter-based PVD coating equipment has undesirable impurities on the surface of the milling cutter before coating, which affects the coating quality, this invention is proposed.

[0008] Therefore, the purpose of this invention is to provide a PVD coating device and coating process based on a milling cutter, the purpose of which is to blow off and clean the undesirable impurities on the surface of the milling cutter during the vacuum pumping process, thereby improving the coating quality.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a PVD coating equipment and coating process based on a milling cutter, comprising: a coating unit, including a coating equipment, a placement component for holding the milling cutter disposed in the working chamber of the coating equipment, and an air extraction component disposed on the coating equipment; and a soot blowing unit, including an air inlet pipe disposed on the coating equipment and connected to the working chamber of the coating equipment, and a soot blowing component and a sealing component disposed in the working chamber of the coating equipment.

[0010] As a preferred embodiment of the milling cutter-based PVD coating equipment of the present invention, the placement component includes a rotating shaft disposed in the working cavity of the coating equipment, two support disks disposed on the rotating shaft, a support shaft uniformly and equidistantly disposed in a ring between the two support disks, and a support tube inclinedly disposed on the shaft wall of the support shaft.

[0011] As a preferred embodiment of the milling cutter-based PVD coating equipment of the present invention, the air extraction component includes an air extraction pipe disposed on the coating equipment and communicating with the working chamber, and an air extraction pump disposed on the air extraction pipe.

[0012] As a preferred embodiment of the milling cutter-based PVD coating equipment of the present invention, the soot blowing component includes a sealed bearing disposed in the air inlet pipe, a soot blowing pipe disposed at one end in the sealed bearing and the other end of the soot blowing pipe being sealed, soot blowing heads evenly and equidistantly disposed on the pipe wall of the soot blowing pipe, a transmission frame disposed in the soot blowing pipe, and a drive fan blade disposed at the end of the transmission frame, wherein the drive fan blade is located in the air inlet pipe.

[0013] As a preferred embodiment of the milling cutter-based PVD coating equipment of the present invention, the sealing component includes a front retaining ring and a rear retaining ring disposed on the inner wall of the air inlet pipe, and an elastic component is disposed in the air inlet pipe between the front retaining ring and the rear retaining ring, and a front sealing plug plate and a rear sealing plug plate are disposed at both ends of the elastic component.

[0014] The front sealing plug and the rear sealing plug are matched with the front retaining ring and the rear retaining ring, and the sealing plug is movably mounted on the front retaining ring.

[0015] As a preferred embodiment of the milling cutter-based PVD coating equipment of the present invention, the elastic component includes a support frame disposed on the inner wall of the air inlet pipe, a drive shaft disposed through the support frame, and a front sealing plug plate and a rear sealing plug plate respectively disposed at both ends of the drive shaft, and a spring disposed between the support frame and the front sealing plug plate.

[0016] As a preferred embodiment of the milling cutter-based PVD coating equipment of the present invention, the soot blowing unit further includes a filter component, which is disposed on a sealing component. The filter component includes a filter screen disposed in an air inlet pipe, a spiral shaft that is slidably disposed on the filter screen through the sealing component, one end of the spiral shaft being connected to a front retaining ring, a sleeve disposed on the spiral shaft, a support component disposed on the sleeve, and a cleaning brush disposed at the end of the sleeve, wherein the bristles of the cleaning brush are movably disposed on the outside of the filter screen.

[0017] As a preferred embodiment of the milling cutter-based PVD coating equipment of the present invention, the support assembly includes a bearing housing disposed on the sleeve, and a support rod disposed at the bearing housing and the end of the air inlet pipe.

[0018] A milling cutter-based PVD coating process,

[0019] Open the cabinet door of the coating equipment, place the milling cutter to be coated onto the placement component, then close the cabinet door and turn on the exhaust component to run at half power;

[0020] The air extraction component extracts the air from the working chamber of the coating equipment and the air inlet pipe connected to the working chamber. Under the action of suction force, the front sealing plug on the sealing component disengages from the front retaining ring.

[0021] Outside air is supplied to the soot blowing component through the air intake pipe. The soot blowing component then rotates around the placement component while blowing air, blowing off the defective impurities adhering to the milling cutter. The blown-off defective impurities are then extracted by the air extraction component along with the air flow direction.

[0022] After a period of suction, the suction component operates at full power, and the suction force on the sealing component increases, causing the rear sealing plug to press against the rear retaining ring. At this time, air can no longer be supplied to the working chamber through the air inlet pipe until the working chamber is evacuated to a vacuum state.

[0023] Then, the vacuum component is closed, and the sealing component is instantly reset under the action of the spring return force. The front sealing plug plate continues to press on the front retaining ring to maintain the vacuum state required for the coating in the working chamber.

[0024] As a preferred embodiment of the milling cutter-based PVD coating process described in this invention, when gas enters the intake pipe, it first passes through a filter component for filtration. When the front sealing plug of the sealing component moves, it drives the filter component to move synchronously, causing the cleaning brush to brush the outside of the filter screen. When the front sealing plug returns to its original position, the front sealing plug drives the bristles of the cleaning brush to sweep across the outside of the filter screen, removing dust from the outside of the filter screen and cleaning the filter screen to prevent the mesh from becoming clogged.

[0025] The beneficial effects of this invention are:

[0026] The present invention discloses a PVD coating equipment and coating process based on a milling cutter, which removes undesirable impurities adhering to the milling cutter before coating, thereby improving the coating quality.

[0027] The present invention discloses a PVD coating equipment and coating process based on a milling cutter, which automatically switches the air inlet pipe according to the half-power and full-power operation of the air pump.

[0028] The present invention discloses a PVD coating device and coating process based on a milling cutter, which prevents external impurities from adhering to the milling cutter while automatically cleaning the filter screen to prevent dust from clogging the filter screen and causing air intake in the air intake pipe. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0030] Figure 1 This is a schematic diagram of the PVD coating equipment based on a milling cutter according to the present invention.

[0031] Figure 2 This is an internal schematic diagram of the PVD coating equipment based on a milling cutter according to the present invention.

[0032] Figure 3 This is a schematic diagram showing the positional relationship between the soot blowing component and the placement component of the PVD coating equipment based on the milling cutter of the present invention.

[0033] Figure 4 This is a schematic diagram of the soot blowing component structure of the PVD coating equipment based on milling cutters of the present invention.

[0034] Figure 5 This is a schematic diagram of the sealing component of the PVD coating equipment based on a milling cutter according to the present invention.

[0035] Figure 6 This is a schematic diagram of the sealing component structure of the PVD coating equipment based on milling cutter of the present invention.

[0036] Figure 7 This is a schematic diagram of the filter component of the milling cutter-based PVD coating device of the present invention.

[0037] In the picture:

[0038] 100. Coating unit; 101. Coating equipment; 102. Placement component; 102a. Rotating shaft; 102b. Support plate; 102c. Support shaft; 102d. Support pipe; 103. Air extraction component; 103a. Air extraction pipe; 103b. Air extraction pump; 200. Soot blowing unit; 201. Air inlet pipe; 202. Soot blowing component; 202a. Sealed bearing; 202b. Soot blowing pipe; 202c. Soot blowing head; 202d. Transmission frame; 202e. Drive fan blade; 20 3. Sealing components; 203a, front retaining ring; 203b, rear retaining ring; 203c, elastic component; 203c-1, support frame; 203c-2, drive shaft; 203c-3, spring; 203d, front sealing plug plate; 203e, rear sealing plug plate; 204. Filter components; 204a, filter screen; 204b, spiral shaft; 204c, sleeve; 204d, support assembly; 204d-1, bearing housing; 204d-2, support rod; 204e, cleaning brush. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0042] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example 1

[0043] Reference Figure 1-6This is the first embodiment of the present invention, which provides a PVD coating device based on a milling cutter. The device includes a coating unit 100 and a soot blowing unit 200 connected to the coating unit 100. The coating unit 100 includes a coating device 101, a placement component 102 for holding a milling cutter connected to the working chamber of the coating device 101, and an air extraction component 103 installed on the coating device 101. The soot blowing unit 200 includes an air inlet pipe 201 disposed on the coating device 101 and connected to the working chamber of the coating device 101, and a soot blowing component 202 and a sealing component 203 disposed in the working chamber of the coating device 101. The sealing component 203 can be a valve to control the opening and closing of the air inlet pipe 201.

[0044] The soot blowing component 202 includes a sealed bearing 202a connected to the inner wall of the outlet end of the air inlet pipe 201, a soot blowing pipe 202b with one end connected to the inner ring wall of the sealed bearing 202a and the other end of the soot blowing pipe 202b being sealed, a plurality of soot blowing heads 202c being evenly and equidistantly pressed on the pipe wall of the soot blowing pipe 202b, a transmission frame 202d connected to the inner wall of the air inlet end of the soot blowing pipe 202b, and a drive fan blade 202e connected to the end of the transmission frame 202d, and the drive fan blade 202e being located inside the air inlet pipe 201.

[0045] During use, the milling cutter is placed on the placement component 102. Before coating, the air extraction component 103 is started at half power to extract the air from the coating equipment 101, and the sealing component 203 is opened. The air outside the coating equipment 101 enters the soot blowing pipe 202b through the air inlet pipe 201. When the air moves in the air inlet pipe 201, it drives the drive fan blade 202e to rotate. At the same time, the drive fan blade 202e rotates, and the transmission frame 202d drives the soot blowing pipe 202b to rotate in the sealed bearing 202a. The soot blowing pipe 202b surrounds... The air entering the soot blowing pipe 202b rotates around the placement component 102 and is then sprayed out through the soot blowing head 202c onto the milling cutter on the placement component 102, blowing off the defective impurities adhering to the milling cutter. The blown-off defective impurities are discharged from the coating equipment along the airflow direction. After a period of time, the sealing component 203 is closed until the working chamber of the coating equipment 101 is evacuated to a vacuum. Then, the milling cutter on the placement component 102 is vacuum coated. The defective impurities adhering to the milling cutter are removed before coating, which improves the coating quality.

[0046] The placement component 102 includes a rotating shaft 102a installed in the working chamber of the coating equipment 101, two support plates 102b connected to the rotating shaft 102a, and a support tube 102d connected in a ring to the shaft wall of the support shaft 102c. The milling cutter is inserted backward into the support tube 102d to place the milling cutter. The air extraction component 103 includes an air extraction pipe 103a connected to the coating equipment 101 and communicating with the working chamber, and an air extraction pump 103b installed on the air extraction pipe 103a. When the air extraction pump 103b is working, it extracts the air from the working chamber through the air extraction pipe 103a. When the air extraction pump 103b is not working, the air extraction pipe 103a is not connected to the outside, and air cannot circulate through the air extraction pipe 103a. Example 2

[0047] Reference Figure 1-6 This is the second embodiment of the present invention, which differs from the first embodiment in that: the sealing component 203 includes a front retaining ring 203a and a rear retaining ring 203b connected to the inner wall of the intake pipe 201; an elastic component 203c is installed inside the intake pipe 201 between the front retaining ring 203a and the rear retaining ring 203b; the two ends of the elastic component 203c are respectively connected to a front sealing plug plate 203d and a rear sealing plug plate 203e; the front sealing plug plate 203d and the rear sealing plug plate 203e are matched with the front retaining ring 203a and the rear retaining ring 203b, and the front sealing plug plate 203d is movably and sealingly disposed on the front retaining ring 203a.

[0048] The elastic component 203c includes a support frame 203c-1 connected to the inner wall of the intake pipe 201, a drive shaft 203c-2 slidably connected to the support frame 203c-1, a front sealing plate 203d and a rear sealing plate 203e respectively connected to the two ends of the drive shaft 203c-2, and a spring 203c-3 connected between the support frame 203c-1 and the front sealing plate 203d, with the spring 203c-3 sleeved on the drive shaft 203c-2.

[0049] During operation, when the vacuum unit 103 operates at half power, it extracts air from the working chamber of the coating equipment 101 and the air inlet pipe 201 connected to the working chamber. Under the action of suction, the front sealing plug plate 203d is subjected to suction, and the compression spring 203c-3 disengages from the front retaining ring 203a. When the front sealing plug plate 203d moves, it also drives the rear sealing plug plate 203e to move synchronously through the transmission shaft 203c-2. When the vacuum unit 103 operates at full power, the suction force on the front sealing plug plate 203d and the rear sealing plug plate 203e increases. Under the action of suction, the rear sealing plug plate 203e presses against the rear retaining ring 203b, closing the air inlet pipe 201. At this time, outside air can no longer be replenished into the working area, and the vacuum unit 103 evacuates the working chamber to a vacuum environment.

[0050] The remaining structure is the same as that in Example 1. Example 3

[0051] Reference Figure 1-7 This is the third embodiment of the present invention, which differs from the second embodiment in that: the soot blowing unit 200 further includes a filter component 204, which is connected to the sealing component 203. The filter component 204 includes a filter screen 204a connected to the inner wall of the air intake pipe 201 to filter the air entering the air intake pipe 201, a spiral shaft 204b that is slidably disposed on the filter screen 204a and sealed through it, one end of the spiral shaft 204b being connected to the front retaining ring 203a, a sealing ring being connected to the through portion of the filter screen 204a, the smooth surface of the spiral shaft 204b being slidably sealed to the sealing ring, a sleeve 204c sleeved on the spiral shaft 204b, a support component 204d that matches the spiral shaft 204b and the sleeve 204c and is connected to the sleeve 204c, and a cleaning brush 204e disposed at the end of the sleeve 204c, with the bristles of the cleaning brush 204e being movably disposed outside the filter screen 204a.

[0052] The support assembly 204d includes a bearing seat 204d-1 sleeved on the outer wall of the sleeve 204c, and a support rod 204d-2 connected to the bearing seat 204d-1 and the end of the air inlet pipe 201, and the sleeve 204c is supported by the bearing seat 204d-1.

[0053] During use, when the front sealing plug 203d moves linearly within the intake pipe 201, it drives the spiral shaft 204b to move synchronously. When the spiral shaft 204b moves linearly, the sleeve 204c on the spiral shaft 204b will rotate (similar to the principle of a toy flying fairy). When the sleeve 204c rotates, it will drive the cleaning brush 204e to brush the surface of the filter screen 204a, sweeping off the impurities adhering to the surface of the filter screen 204a and preventing impurities from clogging the mesh of the filter screen 204a. When the front sealing plug 203d resets, the cleaning brush 204e will not only brush the filter screen 204a, but the front sealing plug 203d will also apply a thrust to some of the air inside the intake pipe 201 during the reset process. This part of the air will backflow the filter screen 204a, blowing the impurities swept off the filter screen 204a out of the intake pipe 201.

[0054] The remaining structure is the same as that in Example 2.

[0055] Working principle: The milling cutter is placed on the placement component 102. Before coating, the air extraction component 103 is started at half power to extract the air from the coating equipment 101. Under the action of suction, the front sealing plug plate 203d is subjected to suction force, compressing the spring 203c-3 and disengaging from the front retaining ring 203a. When the front sealing plug plate 203d moves, it also drives the rear sealing plug plate 203e to move synchronously through the drive shaft 203c-2. The air outside the coating equipment 101 enters the soot blowing pipe 202b through the air inlet pipe 201. When the air moves in the air inlet pipe 201, it pushes the drive fan blade 20. As fan blade 202e rotates, it drives the soot blowing pipe 202b to rotate within the sealed bearing 202a via transmission frame 202d. The soot blowing pipe 202b rotates around the placement component 102. Air entering the soot blowing pipe 202b is then sprayed through the soot blowing head 202c towards the milling cutter on the placement component 102, blowing off the impurities adhering to the milling cutter. The blown-off impurities are discharged from the coating equipment along the airflow direction. After a period of time, when the extraction component 103 operates at full power, the suction force on the front sealing plate 203d and the rear sealing plate 203e increases. Under the suction force, the sealing plug 203e presses against the rear retaining ring 203b, closing the air intake pipe 201. At this time, outside air can no longer be supplied to the working area. The air extraction component 103 evacuates the working chamber to a vacuum environment, and then vacuum-coates the milling cutter on the placement component 102. This removes the impurities adhering to the milling cutter before coating, improving the coating quality. When the front sealing plug 203d moves linearly within the air intake pipe 201, it drives the spiral shaft 204b to move synchronously. When the spiral shaft 204b moves linearly, the sleeve 204c on the spiral shaft 204b will... The sleeve 204c rotates, which in turn drives the cleaning brush 204e to brush the surface of the filter screen 204a, sweeping off the impurities adhering to the surface of the filter screen 204a and preventing the impurities from clogging the mesh of the filter screen 204a. When the front sealing plate 203d is reset, the cleaning brush 204e will not only brush the filter screen 204a, but the front sealing plate 203d will also apply a thrust to part of the air inside the intake pipe 201 during the reset process. This part of the air will backflow the filter screen 204a, blowing the impurities swept off the filter screen 204a out of the intake pipe 201. Example 4

[0056] Reference Figure 1-7 This is the fourth embodiment of the present invention, which differs from the third embodiment in that: a PVD coating process based on a milling cutter, characterized in that:

[0057] S1: Open the cabinet door of the coating equipment 101, place the milling cutter to be coated on the placement component 102, then close the cabinet door and turn on the exhaust component 103 to run at half power.

[0058] S2: The air extraction component 103 extracts the air from the working chamber of the coating equipment 101 and the air inlet pipe 201 connected to the working chamber. Under the action of suction force, the front sealing plug plate 203d on the sealing component 203 disengages from the front retaining ring 203a.

[0059] S3: Allow outside air to be supplied to the soot blowing component 202 through the air inlet pipe 201. Then, the soot blowing component 202 rotates around the placement component 102 while blowing air to blow off the defective impurities adhering to the milling cutter. The blown-off defective impurities are then extracted by the air extraction component 103 along with the air flow direction.

[0060] S4: After a period of suction, the suction component 103 operates at full power, and the suction force on the sealing component 203 increases, causing the rear sealing plug plate 203e to press against the rear retaining ring 203b. At this time, air can no longer be supplied to the working chamber through the air inlet pipe 201 until the working chamber is evacuated to a vacuum state.

[0061] S5: Then close the vacuum component 103 again. The sealing component 203 is instantly reset under the action of the spring 203c-3. The front sealing plug plate 203d continues to press on the front retaining ring 203a to maintain the vacuum state required for the coating in the working chamber.

[0062] When gas enters the intake pipe 201, it is first filtered by the filter component 204. When the front sealing plug plate 203d of the sealing component 203 moves, it will drive the filter component 204 to move synchronously, so that the cleaning brush 204e brushes the outside of the filter screen 204a. When the front sealing plug plate 203d is reset, the front sealing plug plate 203d drives the bristles of the cleaning brush 204e to sweep across the outside of the filter screen 204a, sweeping off the dust on the outside of the filter screen 204a, cleaning the filter screen 204a, and preventing the mesh from becoming blocked.

[0063] Working principle: Before coating the milling cutter, the vacuum unit 103 is activated to clean the milling cutter, blowing off all the impurities on the milling cutter to prevent the coating from forming on the impurities on the surface of the milling cutter, thus improving the coating quality of the milling cutter. Then, the working chamber is evacuated to a vacuum state to coat the milling cutter.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A PVD coating device based on a milling cutter, characterized in that: include, The coating unit (100) includes a coating device (101), a placement component (102) for holding a milling cutter disposed in the working chamber of the coating device (101), and an air extraction component (103) disposed on the coating device (101). The soot blowing unit (200) includes an air inlet pipe (201) disposed on the coating equipment (101) and the air inlet pipe (201) is connected to the working chamber of the coating equipment (101), as well as a soot blowing component (202) and a sealing component (203) disposed in the working chamber of the coating equipment (101). The sealing component (203) includes a front retaining ring (203a) and a rear retaining ring (203b) disposed on the inner wall of the air intake pipe (201). An elastic component (203c) is disposed inside the air intake pipe (201) between the front retaining ring (203a) and the rear retaining ring (203b). A front sealing plug plate (203d) and a rear sealing plug plate (203e) are disposed at both ends of the elastic component (203c). The front sealing plug (203d) and the rear sealing plug (203e) are matched with the front retaining ring (203a) and the rear retaining ring (203b), and the front sealing plug (203d) is sealed and movable on the front retaining ring (203a).

2. The PVD coating equipment based on a milling cutter according to claim 1, characterized in that: The placement component (102) includes a rotating shaft (102a) disposed in the working chamber of the coating equipment (101), two support plates (102b) disposed on the rotating shaft (102a), a support shaft (102c) disposed in a ring and evenly spaced between the two support plates (102b), and a support tube (102d) disposed inclined on the shaft wall of the support shaft (102c).

3. The milling cutter-based PVD coating equipment according to claim 1 or 2, characterized in that: The air extraction component (103) includes an air extraction pipe (103a) disposed on the coating equipment (101) and communicating with the working chamber, and an air extraction pump (103b) disposed on the air extraction pipe (103a).

4. The PVD coating equipment based on a milling cutter according to claim 3, characterized in that: The soot blowing component (202) includes a sealed bearing (202a) disposed in the air inlet pipe (201), a soot blowing pipe (202b) with one end disposed in the sealed bearing (202a) and the other end of the soot blowing pipe (202b) being sealed, a soot blowing head (202c) evenly and equidistantly disposed on the pipe wall of the soot blowing pipe (202b), a transmission frame (202d) disposed in the soot blowing pipe (202b), and a drive fan blade (202e) disposed at the end of the transmission frame (202d), and the drive fan blade (202e) being located in the air inlet pipe (201).

5. The PVD coating equipment based on a milling cutter according to claim 1, characterized in that: The elastic component (203c) includes a support frame (203c-1) disposed on the inner wall of the intake pipe (201), a drive shaft (203c-2) passing through the support frame (203c-1), a front sealing plate (203d) and a rear sealing plate (203e) respectively disposed at both ends of the drive shaft (203c-2), and a spring (203c-3) disposed between the support frame (203c-1) and the front sealing plate (203d).

6. The PVD coating equipment based on a milling cutter according to claim 5, characterized in that: The soot blowing unit (200) further includes a filter component (204), which is disposed on the sealing component (203). The filter component (204) includes a filter screen (204a) disposed in the air inlet pipe (201), a spiral shaft (204b) that is slidably disposed on the filter screen (204a) through the seal, and one end of the spiral shaft (204b) is connected to the front retaining ring (203a), a sleeve (204c) disposed on the spiral shaft (204b), a support component (204d) disposed on the sleeve (204c), and a cleaning brush (204e) disposed at the end of the sleeve (204c), with the bristles of the cleaning brush (204e) being movably disposed on the outside of the filter screen (204a).

7. The PVD coating equipment based on a milling cutter according to claim 6, characterized in that: The support assembly (204d) includes a bearing housing (204d-1) disposed on the sleeve (204c), and a support rod (204d-2) disposed at the bearing housing (204d-1) and the end of the air intake pipe (201).

8. A milling cutter-based PVD coating process, wherein the PVD coating process is implemented using the milling cutter-based PVD coating equipment according to any one of claims 1 to 7, characterized in that: Open the cabinet door of the coating equipment (101), place the milling cutter to be coated on the placement component (102), then close the cabinet door and turn on the exhaust component (103) to run at half power; The air extraction component (103) extracts the air from the working chamber of the coating equipment (101) and the air inlet pipe (201) connected to the working chamber. Under the action of suction force, the front sealing plug plate (203d) on the sealing component (203) is disengaged from the front retaining ring (203a). The outside air is supplied to the soot blowing component (202) through the air inlet pipe (201). The soot blowing component (202) rotates around the placement component (102) while blowing air to blow off the bad impurities adhering to the milling cutter. The blown-off bad impurities are then extracted by the air extraction component (103) along with the air flow direction. After a period of suction, the suction component (103) operates at full power, and the suction force on the sealing component (203) increases, causing the rear sealing plug plate (203e) to press against the rear retaining ring (203b). At this time, air can no longer be supplied to the working chamber through the air inlet pipe (201) until the working chamber is evacuated to a vacuum state. Then the vacuum component (103) is closed, and the sealing component (203) is instantly reset under the action of the spring (203c-3). The front sealing plug plate (203d) continues to press on the front retaining ring (203a) to maintain the vacuum state required for the coating in the working chamber.

9. The PVD coating process based on milling cutter according to claim 8, characterized in that: When gas enters the intake pipe (201), it first passes through the filter component (204) for filtration. When the front sealing plug plate (203d) of the sealing component (203) moves, it will drive the filter component (204) to move synchronously, so that the cleaning brush (204e) brushes the outside of the filter screen (204a). When the front sealing plug plate (203d) is reset, the front sealing plug plate (203d) drives the bristles of the cleaning brush (204e) to sweep across the outside of the filter screen (204a), sweeping off the dust on the outside of the filter screen (204a) and cleaning the filter screen (204a) to prevent the mesh from becoming blocked.

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