Vacuum coating system for mold treatment and coating method thereof
By designing a vacuum coating system for mold processing, the mold can be easily installed and disassembled using components such as mounting bases, fixed columns, liquid pumps and solenoid valves. The mold can be rotated and revolved during the coating process through a transmission gear system, which solves the problem of inconvenient loading and unloading of molds in existing vacuum coating machines and improves the coating efficiency.
Patent Information
- Application Number
- CN202510876811.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When using the existing vacuum coating machine, it is not convenient to load and unload the hook upper mold located inside the machine, resulting in inconvenience in use.
A vacuum coating system for mold processing was designed. By setting up components such as a mounting base, fixing columns, bolts, a liquid pump, and a solenoid valve, the mold can be easily installed and disassembled. The transmission gear system enables the mold to rotate and revolve during the coating process, thereby improving the coating efficiency.
It realizes convenient loading and unloading of molds and efficient vacuum coating, improving the operational convenience and efficiency of the coating process.
Smart Images

Figure CN120666304A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of mold processing, and in particular to a vacuum coating system and a coating method for mold processing. Background Art
[0002] Vacuum coating machines mainly refer to a type of coating that needs to be performed under a relatively high vacuum degree. There are many types, including vacuum ion evaporation, magnetron sputtering, MBE molecular beam epitaxy, PLD laser sputtering deposition, and many others. The main idea is to divide it into two types: evaporation and sputtering. When the vacuum coating machine is working: first, the vacuum is evacuated to put the vacuum chamber into a vacuum state, and then the coating material (referred to as the film material) in the crucible at the bottom of the vacuum chamber is heated by the electron gun beam; after the film material is heated to a certain temperature, the film material molecules will volatilize, and the volatilized film material molecules will be deposited on the surface of the product at the top of the vacuum chamber to form a thin film. However, when using existing vacuum coating machines, it is not convenient to load and unload the mold on the hook located inside the machine, resulting in inconvenience in use. Summary of the Invention
[0003] In view of the deficiencies in the prior art, the present invention provides a vacuum coating system and a coating method for mold processing, which solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A vacuum coating system for mold processing, including a coating machine, a coating cavity is opened inside the coating machine, a sealing door is hingedly connected to the coating machine, the top of the inner cavity of the coating cavity is rotatably connected to a top plate, the bottom of the top plate is fixedly connected to a rotating shaft, the bottom end of the rotating shaft is fixedly connected to a bottom plate, the bottom of the bottom plate is fixedly connected to a rotating seat, a first connecting end is fixedly connected to the inside of the chassis, a plurality of first driving cylinders are fixedly connected to the inside of the chassis and on the outside of the first connecting end, a first liquid bag is fixedly connected to one side of the inner cavity of the first driving cylinder, one end of the first liquid bag is fixedly connected to a first driving column, one end of the first driving column extends to the outside of the first driving cylinder, a first solenoid valve is fixedly connected to the outside of the first connecting end and on one end of the first liquid bag, one end of the first solenoid valve extends to the inside of the first liquid bag.
[0005] Optionally, a second connecting end is fixedly connected to the inside of the top plate, and several second driving cylinders are provided inside the top plate and on the outside of the second connecting end. The inner cavity of the second driving cylinder is slidably connected to a second driving column, and a second liquid capsule is fixedly connected to one side of the inner cavity of the second driving cylinder and on the outside of the second driving column. One end of the second liquid capsule is fixedly connected to one end of the second driving column, and a second solenoid valve is fixedly connected to the outside of the second connecting end and on one end of the second liquid capsule, and one end of the second solenoid valve extends into the interior of the second liquid capsule.
[0006] Optionally, a second rotary joint is installed on the top of the coating machine, the top of the second connecting end is connected to one end of the second rotary joint, a second liquid pump is fixedly connected to the top of the coating machine, one end of the second liquid pump is connected to one end of the second rotary joint, a second liquid tank is fixedly connected to the top of the coating machine and located on one side of the second liquid pump, and the other end of the second liquid pump extends to the inside of the second liquid tank.
[0007] Optionally, one end of the second driving column extends to the outside of the top plate and the second driving cylinder, one end of the second driving column and the first driving column are fixedly connected to a moving block, one end of the moving block is fixedly connected to a mounting seat, a fixing column is placed inside the mounting seat, a bolt is inserted inside the mounting seat, one end of the bolt extends to the outside of the mounting seat, the other end of the bolt passes through the other side of the fixing column and the mounting seat, a nut is threadedly connected to the outside of one end of the bolt, and a rotating column is rotatably connected between the two fixing columns.
[0008] Optionally, a drive box is fixedly sleeved on the outer side of the fixed column below the top plate, a first transmission gear is fixedly sleeved on the outer side of the rotating column, a rotating rod is rotatably connected to the inner cavity of the drive box, and a second transmission gear meshing with the first transmission gear is fixedly sleeved on the rotating rod, and one end of the second transmission gear extends to the outside of the drive box, and a gear ring is fixedly connected to the inner wall of the coating cavity to match the second transmission gear, and a slot is provided on one side of the gear ring.
[0009] Optionally, a driving cavity is provided inside the coating machine and below the coating cavity, a rotating seat is fixedly connected to the bottom of the chassis, the bottom end of the rotating seat extends into the driving cavity and is rotatably connected to the bottom of the driving cavity, a second driving gear is fixedly sleeved on the outer side of the rotating seat, a first motor is fixedly connected to the bottom of the coating machine, an output end of the first motor extends into the driving cavity and is fixedly sleeved with a first driving gear, and the first driving gear is meshed with the second driving gear.
[0010] Optionally, a first rotary joint is provided at the bottom of the coating machine, a first liquid pump is fixedly connected to the bottom of the coating machine and on one side of the first rotary joint, a first liquid tank is fixedly connected to the bottom of the coating machine and on one side of the first liquid pump, one end of the first liquid pump extends into the interior of the first liquid tank, the other end of the first liquid pump is connected to one end of the first rotary joint, one end of the first connecting end passes through the rotating seat and is connected to one end of the first rotary joint, and there is a gap between the first connecting end and the rotating seat.
[0011] A vacuum coating method for mold processing comprises the following steps:
[0012] Step 1: Hang the mold on the hook, and then install the rotating column inside the coating chamber;
[0013] Step 2: The coating structure starts and vacuum coats the mold hung on the hook;
[0014] Step 3: After vacuum coating, remove the mold from the coating cavity for subsequent processing.
[0015] The present invention provides a vacuum coating system and coating method for mold processing, which have the following beneficial effects:
[0016] 1. The vacuum coating system and coating method for mold processing are provided with a mounting seat, a fixed column and a bolt. The second liquid pump is used to pump out the liquid in the second liquid bag through the second rotary joint, the second connecting end and the second solenoid valve, causing the second liquid bag to shrink. The other end of the second liquid pump is used to discharge the liquid into the second liquid tank for collection and storage, causing the second driving column and the moving block to move outward. The liquid in the first liquid tank is pumped out by the first liquid pump, and then the other end of the first liquid pump is used to discharge the liquid into the first rotary joint, the first connecting end and the first solenoid valve. The liquid is then discharged into the first liquid bag through the first solenoid valve, causing the first liquid bag to expand, so that the first liquid bag pushes the first driving column and the moving block to move outward. The nut is then unscrewed from the outside of one end of the bolt, and the bolt is then moved out of the fixed column and the mounting seat to release the limit fixation of the fixed column. The fixed column and the rotating column are moved out of the opening on one side of the mounting seat and the moving block, and the mold is removed from the hook or hooked on the hook.
[0017] 2. The vacuum coating system for mold processing and the coating method thereof are provided with a first transmission gear, a drive box and a fixed column. The output end of the first motor drives the first drive gear to rotate, so that the first drive gear drives the second drive gear to drive the rotating seat and the chassis and the mounting seat and the fixed column and the rotating column and the rotating shaft to rotate, so that the rotating column drives the drive box to move circumferentially along the inner side of the ring gear, so that the ring gear drives the second transmission gear to drive the rotating rod to rotate, so that the rotating rod drives the first transmission gear to rotate, so that the first transmission gear drives the rotating column to rotate, so that the rotating column drives the hook to rotate, so that the hook drives the mold to rotate, so that the mold is vacuum coated, and the mold hung on the hook rotates synchronously during revolution, so that the mold hung on the hook is vacuum coated. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 Schematic diagram of the internal structure of the present invention;
[0019] Figure 2 This is a schematic diagram of the mounting base structure of the present invention;
[0020] Figure 3 This is a schematic diagram of the top view of the gear ring of the present invention;
[0021] Figure 4 For the present invention Figure 1 A magnified view of point A;
[0022] Figure 5 For the present invention Figure 1 Enlarged view of point B;
[0023] Figure 6 For the present invention Figure 1 Enlarged view of point C.
[0024] In the figure: 1. Coating machine; 2. Sealing door; 3. Coating chamber; 4. Rotating shaft; 5. Coating structure; 6. Top plate; 8. Rotating column; 9. Hook; 10. Driving chamber; 11. First motor; 12. First driving gear; 13. Second driving gear; 14. Rotating seat; 15. Chassis; 16. First driving cylinder; 17. First driving column; 18. First liquid capsule; 19. First connecting terminal; 20. First solenoid valve; 21. Moving block; 22. Mounting seat; 23. , bolt; 24, nut; 25, first liquid tank; 26, first liquid pump; 27, first rotary joint; 28, second connecting end; 29, second drive cylinder; 30, second drive column; 31, second liquid sac; 32, second solenoid valve; 33, ring gear; 34, drive box; 35, fixed column; 36, first transmission gear; 37, rotating rod; 38, second transmission gear; 39, slot; 40, second liquid pump; 41, second rotary joint; 42, second liquid tank. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0026] Example 1
[0027] See also Figures 1 to 6The present invention provides a technical solution: a vacuum coating system for mold processing, including a coating machine 1, a coating chamber 3 is opened inside the coating machine 1, and a sealing door 2 is hingedly connected to the coating machine 1. The top of the inner cavity of the coating chamber 3 is rotatably connected to a top plate 6, the bottom of the top plate 6 is fixedly connected to a rotating shaft 4, the bottom end of the rotating shaft 4 is fixedly connected to a bottom plate 15, and the bottom of the bottom plate 15 is fixedly connected to a rotating seat 14. A first connecting end 19 is fixedly connected to the inside of the bottom plate 15, and a plurality of first driving cylinders 16 are fixedly connected to the inside of the bottom plate 15 and on the outside of the first connecting end 19. A first liquid capsule 18 is fixedly connected to one side of the inner cavity of the first driving cylinder 16, and one end of the first liquid capsule 18 is fixedly connected to a first driving column 17. One end of the first driving column 17 extends to the outside of the first driving cylinder 16, and a first solenoid valve 20 is fixedly connected to the outside of the first connecting end 19 and on one end of the first liquid capsule 18. One end of the first solenoid valve 20 extends to the inside of the first liquid capsule 18.
[0028] Among them, a second connecting end 28 is fixedly connected to the inside of the top plate 6, and several second driving cylinders 29 are opened inside the top plate 6 and on the outside of the second connecting end 28. The inner cavity of the second driving cylinder 29 is slidably connected to the second driving column 30, and a second liquid capsule 31 is fixedly connected to one side of the inner cavity of the second driving cylinder 29 and on the outside of the second driving column 30. One end of the second liquid capsule 31 is fixedly connected to one end of the second driving column 30, and a second solenoid valve 32 is fixedly connected to the outside of the second connecting end 28 and on one end of the second liquid capsule 31. One end of the second solenoid valve 32 extends to the inside of the second liquid capsule 31, and the second driving column 30, the moving block 21 and the mounting seat 22 are driven to move through the second liquid capsule 31.
[0029] Among them, a second rotary joint 41 is installed on the top of the coating machine 1, and the top of the second connecting end 28 is connected to one end of the second rotary joint 41. A second liquid pump 40 is fixedly connected to the top of the coating machine 1, and one end of the second liquid pump 40 is connected to one end of the second rotary joint 41. A second liquid tank 42 is fixedly connected to the top of the coating machine 1 and located on one side of the second liquid pump 40. The other end of the second liquid pump 40 extends to the inside of the second liquid tank 42. Liquid is input into or extracted from the second liquid capsule 31 through the second liquid pump 40, so that the second liquid capsule 31 expands or contracts.
[0030] Among them, one end of the second driving column 30 extends to the outside of the top plate 6 and the second driving cylinder 29, and one end of the second driving column 30 and the first driving column 17 are fixedly connected to the moving block 21, and one end of the moving block 21 is fixedly connected to the mounting seat 22. A fixing column 35 is placed inside the mounting seat 22, and a bolt 23 is inserted into the mounting seat 22. One end of the bolt 23 extends to the outside of the mounting seat 22, and the other end of the bolt 23 passes through the fixing column 35 and the other side of the mounting seat 22. The outside of one end of the bolt 23 is threadedly connected with a nut 24, and a rotating column 8 is rotatably connected between the two fixing columns 35. The rotating column 8 drives the hook 9 and the mold hung on the hook 9 to rotate, and the mold is vacuum coated.
[0031] Among them, the outer side of the fixed column 35 under the top plate 6 is fixedly sleeved with a drive box 34, the outer side of the rotating column 8 is fixedly sleeved with a first transmission gear 36, the inner cavity of the drive box 34 is rotatably connected with a rotating rod 37, and the rotating rod 37 is fixedly sleeved with a second transmission gear 38 engaged with the first transmission gear 36. One end of the second transmission gear 38 extends to the outside of the drive box 34, and the inner wall of the coating cavity 3 is fixedly connected with a gear ring 33 that matches the second transmission gear 38. A slot 39 is opened on one side of the gear ring 33 to facilitate the movement of the fixed column 35 and the rotating column 8 as well as the hook 9 and the mold hung on the hook 9 out of the coating cavity 3.
[0032] Among them, a driving cavity 10 is opened inside the coating machine 1 and below the coating cavity 3, and a rotating seat 14 is fixedly connected to the bottom of the chassis 15. The bottom end of the rotating seat 14 extends to the inside of the driving cavity 10 and is rotatably connected to the bottom of the inner cavity of the driving cavity 10. The outer side of the rotating seat 14 is fixedly sleeved with a second driving gear 13, and the bottom of the coating machine 1 is fixedly connected to a first motor 11. The output end of the first motor 11 extends to the inside of the driving cavity 10 and is fixedly sleeved with a first driving gear 12. The first driving gear 12 is engaged with the second driving gear 13 to drive the rotating shaft 4 to drive the rotating column 8 and the hook 9 to revolve.
[0033] Among them, a first rotary joint 27 is provided at the bottom of the coating machine 1, and a first liquid pump 26 is fixedly connected to the bottom of the coating machine 1 and on one side of the first rotary joint 27. A first liquid tank 25 is fixedly connected to the bottom of the coating machine 1 and on one side of the first liquid pump 26. One end of the first liquid pump 26 extends into the interior of the first liquid tank 25, and the other end of the first liquid pump 26 is connected to one end of the first rotary joint 27. One end of the first connecting end 19 passes through the rotating seat 14 and is connected to one end of the first rotary joint 27. There is a gap between the first connecting end 19 and the rotating seat 14 to input or extract liquid into or out of the first liquid capsule 18, control the expansion or contraction of the first liquid capsule 18, and make the first driving column 17 drive the moving block 21, the mounting seat 22 and the fixed column 35 and the rotating column 8 to move.
[0034] Example 2
[0035] See also Figures 1 to 6 The present invention provides a technical solution: a vacuum coating method for mold processing, comprising the following steps:
[0036] Step 1: Hang the mold on the hook 9, and then install the rotating column 8 inside the coating cavity 3;
[0037] Step 2: The coating structure 5 is started to perform vacuum coating on the mold hung on the hook 9;
[0038] Step 3: After vacuum coating, the mold is taken out from the coating cavity 3 for subsequent processing.
[0039] In summary, when using the vacuum coating system and coating method for mold processing, the sealing door 2 is opened, and the mold is hung on the hook 9. The fixing column 35 is then placed into the mounting seat 22 through the opening on one side of the mounting seat 22 and the moving block 21. One end of the bolt 23 is then passed through the mounting seat 22 and the fixing column 35 and out to the outside of the mounting seat 22. The nut 24 is then screwed onto the outside of the bolt 23 to limit and fix the position of the fixing column 35.
[0040] Then the first liquid pump 26 is started, and the liquid inside the first liquid capsule 18 is sucked into the first rotary joint 27 through the first connecting end 19 through the first solenoid valve 20, and then sucked into the first liquid pump 26 through the first rotary joint 27, and then discharged into the first liquid tank 25 for storage through the other end of the first liquid pump 26, so that the first liquid capsule 18 contracts, so that the first driving column 17 drives the moving block 21 to reset and move, and the second liquid pump 40 extracts the liquid from the second liquid tank 42, and then discharges the liquid into the second rotary joint 41, the second connecting end 28 and the second solenoid valve 32 through the other end of the second liquid pump 40 to input liquid into the second driving cylinder 29, so that the second liquid capsule 31 expands, so that the expansion of the second liquid capsule 31 pushes the second driving column 30 and the moving block 21 toward the coating The cavity 3 moves inside until the fixed column 35 and the rotating column 8 move to the working position, and then the sealing door 2 is closed to seal the interior of the coating machine 1. At this time, the output end of the first motor 11 drives the first driving gear 12 to rotate, so that the first driving gear 12 drives the second driving gear 13 to drive the rotating seat 14 and the chassis 15 and the mounting seat 22 and the fixed column 35 and the rotating column 8 and the rotating shaft 4 to rotate, so that the rotating column 8 drives the driving box 34 to move circumferentially along the inner side of the ring gear 33, so that the ring gear 33 drives the second transmission gear 38 to drive the rotating rod 37 to rotate, so that the rotating rod 37 drives the first transmission gear 36 to rotate, so that the first transmission gear 36 drives the rotating column 8 to rotate, so that the rotating column 8 drives the hook 9 to rotate, so that the hook 9 drives the mold to rotate, so as to perform vacuum coating on the mold;
[0041] After the vacuum coating is completed, the second liquid pump 40 is used to pump out the liquid inside the second liquid capsule 31 through the second rotary joint 41, the second connecting end 28 and the second solenoid valve 32, so that the second liquid capsule 31 shrinks, and the other end of the second liquid pump 40 is used to discharge the liquid into the second liquid tank 42 for collection and storage, so that the second driving column 30 and the moving block 21 move toward the outside, and the liquid inside the first liquid tank 25 is pumped out through the first liquid pump 26, and then the other end of the first liquid pump 26 is used to discharge the liquid into the first rotary joint 27 and the first connecting end. 19 and the inside of the first solenoid valve 20, and then discharge the liquid into the inside of the first liquid capsule 18 through the first solenoid valve 20, so that the first liquid capsule 18 expands, so that the first liquid capsule 18 pushes the first driving column 17 and the moving block 21 to move toward the outside, and then unscrew the nut 24 from the outside of one end of the bolt 23, and then move the bolt 23 out from the inside of the fixed column 35 and the mounting seat 22, release the limit fixation of the fixed column 35, move the fixed column 35 and the rotating column 8 out from the opening on one side of the mounting seat 22 and the moving block 21, and remove the mold from the hook 9.
[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.
Claims
1. A vacuum coating system for mold processing, comprising a coating machine (1), characterized in that: The coating machine (1) has a coating chamber (3) formed therein, and the coating machine (1) is hinged with a sealing door (2). The top of the inner cavity of the coating chamber (3) is rotatably connected to a top plate (6), the bottom of the top plate (6) is fixedly connected to a rotating shaft (4), the bottom end of the rotating shaft (4) is fixedly connected to a chassis (15), the bottom of the chassis (15) is fixedly connected to a rotating seat (14), the interior of the chassis (15) is fixedly connected to a first connecting end (19), and the interior of the chassis (15) and located outside the first connecting end (19) A plurality of first drive cylinders (16) are fixedly connected, a first liquid capsule (18) is fixedly connected to one side of the inner cavity of the first drive cylinder (16), one end of the first liquid capsule (18) is fixedly connected to a first drive column (17), one end of the first drive column (17) extends to the outside of the first drive cylinder (16), the outside of the first connecting end (19) and one end of the first liquid capsule (18) is fixedly connected to a first electromagnetic valve (20), and one end of the first electromagnetic valve (20) extends to the inside of the first liquid capsule (18).
2. The vacuum coating system for mold processing according to claim 1, characterized in that: The top plate (6) is fixedly connected to a second connecting terminal (28), and a plurality of second driving cylinders (29) are provided inside the top plate (6) and outside the second connecting terminal (28). The inner cavity of the second driving cylinder (29) is slidably connected to a second driving column (30). A second liquid capsule (31) is fixedly connected to one side of the inner cavity of the second driving cylinder (29) and outside the second driving column (30). One end of the second liquid capsule (31) is fixedly connected to one end of the second driving column (30). A second electromagnetic valve (32) is fixedly connected to the outer side of the second connecting terminal (28) and one end of the second liquid capsule (31). One end of the second electromagnetic valve (32) extends into the interior of the second liquid capsule (31).
3. The vacuum coating system for mold processing according to claim 2, characterized in that: A second rotary joint (41) is installed on the top of the coating machine (1), and the top of the second connecting end (28) is connected to one end of the second rotary joint (41). A second liquid pump (40) is fixedly connected to the top of the coating machine (1), and one end of the second liquid pump (40) is connected to one end of the second rotary joint (41). A second liquid tank (42) is fixedly connected to the top of the coating machine (1) and located on one side of the second liquid pump (40), and the other end of the second liquid pump (40) extends to the inside of the second liquid tank (42).
4. The vacuum coating system for mold processing according to claim 3, characterized in that: One end of the second driving column (30) extends to the outside of the top plate (6) and the second driving cylinder (29), one end of the second driving column (30) and the first driving column (17) are fixedly connected to the moving block (21), one end of the moving block (21) is fixedly connected to the mounting seat (22), a fixing column (35) is placed inside the mounting seat (22), a bolt (23) is inserted into the mounting seat (22), one end of the bolt (23) extends to the outside of the mounting seat (22), the other end of the bolt (23) passes through the other side of the fixing column (35) and the mounting seat (22), the outer side of one end of the bolt (23) is threadedly connected to a nut (24), and a rotating column (8) is rotatably connected between the two fixing columns (35).
5. The vacuum coating system for mold processing according to claim 4, characterized in that: The outer side of the fixed column (35) below the top plate (6) is fixedly sleeved with a driving box (34), the outer side of the rotating column (8) is fixedly sleeved with a first transmission gear (36), the inner cavity of the driving box (34) is rotatably connected to a rotating rod (37), the rotating rod (37) is fixedly sleeved with a second transmission gear (38) meshing with the first transmission gear (36), one end of the second transmission gear (38) extends to the outer side of the driving box (34), the inner wall of the coating cavity (3) is fixedly connected with a gear ring (33) matching the second transmission gear (38), and a slot (39) is provided on one side of the gear ring (33).
6. The vacuum coating system for mold processing according to claim 1, characterized in that: A driving chamber (10) is provided inside the coating machine (1) and below the coating chamber (3); a rotating seat (14) is fixedly connected to the bottom of the chassis (15); the bottom end of the rotating seat (14) extends into the driving chamber (10) and is rotatably connected to the bottom of the inner cavity of the driving chamber (10); a second driving gear (13) is fixedly sleeved on the outer side of the rotating seat (14); a first motor (11) is fixedly connected to the bottom of the coating machine (1); an output end of the first motor (11) extends into the driving chamber (10) and is fixedly sleeved with a first driving gear (12); the first driving gear (12) is meshed with the second driving gear (13).
7. The vacuum coating system for mold processing according to claim 1, characterized in that: A first rotary joint (27) is provided at the bottom of the coating machine (1), and a first liquid pump (26) is fixedly connected to the bottom of the coating machine (1) and on one side of the first rotary joint (27). A first liquid tank (25) is fixedly connected to the bottom of the coating machine (1) and on one side of the first liquid pump (26). One end of the first liquid pump (26) extends into the interior of the first liquid tank (25), and the other end of the first liquid pump (26) is connected to one end of the first rotary joint (27). One end of the first connecting end (19) passes through the rotating seat (14) and is connected to one end of the first rotary joint (27), and there is a gap between the first connecting end (19) and the rotating seat (14).
8. A vacuum coating method for mold processing, characterized in that: The following steps are involved: Step 1: Hang the mold on the hook (9), and then install the rotating column (8) inside the coating cavity (3); Step 2: The coating structure (5) is started to perform vacuum coating on the mold hung on the hook (9); Step 3: After vacuum coating, the mold is taken out from the coating cavity (3) for subsequent processing.