A vacuum system for evaporation coating machine

Abstract

This invention relates to a vacuum coating system for an evaporative coating machine, comprising a coating mechanism disposed inside the machine housing. The coating mechanism includes a coating chamber, a support component, a coating component, a reverse component, and a switching component, all disposed inside the machine housing. The coating component includes an inner coating unit disposed on the switching component for coating the inner wall of the pipe fitting, and an outer coating unit disposed on the switching component for coating the outer wall of the pipe fitting. This invention can simultaneously coat the inner and outer walls of the pipe fitting with primer, applying the primer in both forward and reverse directions to ensure that both sides of the protrusions on the inner wall of the pipe fitting can be coated with primer, improving the uniformity of primer coating on the inner wall of the pipe fitting and enhancing the overall coating effect. It allows for mass production of coated pipe fittings, increasing the economic benefits for enterprises. This solves the technical problem that traditional evaporative coating machines are inconvenient for coating primer and coating pipe fittings with protrusions on the inner wall, resulting in uneven coating on the inner wall of the pipe fitting.

Description

Technical Field

[0001] This invention relates to the field of evaporation coating technology, and in particular to a vacuum system for evaporation coating machines. Background Technology

[0002] Vacuum evaporation is a method of depositing thin films on a workpiece or substrate by evaporating or sublimating the material to be deposited in a vacuum. It can be used to deposit thin films on metals, semiconductors, compounds, and some organic polymers. The principle of vacuum evaporation deposition is to place the material to be deposited in the evaporation source of the evaporation apparatus and heat it to evaporate. The resulting gas molecules or atoms of the material are deposited onto the substrate to form a film. The evaporation source is the component in the evaporation deposition machine used to heat the material and vaporize it. The evaporation source generally consists of a crucible and multiple nozzles positioned above the crucible. By heating the crucible, the material to be deposited inside is turned into vapor. After being uniformly distributed inside the crucible, the vapor is ejected from the nozzles onto the substrate to form a film. Improving and strengthening the inner wall of pipe fittings can meet the requirements for use in complex and harsh environments. For example, protrusions can be added to the inner wall of the pipe fitting to increase the inner surface area, and electroplating or chemical plating can be used to improve the surface strengthening effect of the inner wall of the pipe fitting.

[0003] Patent document CN201811360942.5 discloses a vacuum coating device and manufacturing process for the inner wall of a pipe fitting, including a flipping assembly, a magnetic shoe assembly, a vacuum chamber, a cathode assembly, a pipe fitting stage, a heating cylinder, an insulation assembly, and a sealing assembly. The flipping assembly is mounted on the vacuum chamber to enable the vacuum chamber to be flipped during loading and unloading. The pipe fitting stage can be mounted inside the vacuum chamber to clamp the pipe fitting to be coated. The heating cylinder is mounted on the pipe fitting stage to heat the pipe fitting. The cathode assembly is mounted inside the pipe fitting to be coated through the insulation assembly and the sealing assembly. The cathode assembly includes a magnetron sputtering cathode and an arc cathode. Different cathodes are equipped with corresponding magnetic shoe assemblies. The hard coating is deposited on the inner wall of the pipe fitting by magnetron sputtering and arc ion plating under vacuum using a water-cooled cathode formed by processing target material using disposable copper tube.

[0004] However, in actual use, the inventors found that traditional evaporation coating machines are inconvenient for applying primer and coating to pipes with protrusions on the inner wall, resulting in uneven coating on the inner wall of the pipes. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a vacuum coating system for an evaporative coating machine. Through the coordinated application and reverse-blocking components, it can simultaneously coat the inner and outer walls of pipes with primer, applying the primer in both forward and reverse directions to ensure that both sides of the raised sections on the inner wall are coated with primer. This improves the uniformity of the primer coating on the inner wall, facilitating the coating process and enhancing the overall coating effect. The system is highly automated, enabling mass production of coated pipes and increasing the economic benefits for enterprises. This solves the technical problem of traditional evaporative coating machines being inconvenient for applying primer and coating to pipes with raised inner walls, resulting in uneven coating on the inner wall.

[0006] To address the above technical issues, the following technical solution is adopted:

[0007] A vacuum system for evaporative coating machines includes a vacuuming mechanism located above the machine housing, an evaporation mechanism located inside the machine housing, and a coating mechanism located inside the machine housing. The coating mechanism includes a coating chamber located inside the machine housing, a support assembly located inside the coating chamber for placing a pipe, a coating assembly located inside the coating chamber for applying a primer to the inner and outer walls of the pipe, a backstop assembly located inside the coating chamber for guiding the evaporated material to the inner wall of the pipe, and a switching assembly located inside the coating chamber for switching the positions of the coating assembly and the backstop assembly. The inner wall of the pipe has several sets of protrusions evenly distributed.

[0008] The coating assembly includes an inner coating unit disposed on the switching assembly for coating the inner wall of the pipe fitting, and an outer coating unit disposed on the switching assembly for coating the outer wall of the pipe fitting.

[0009] Preferably, the switching assembly includes a support plate disposed inside the coating chamber, a first threaded rod disposed inside the coating chamber, a first threaded block threaded through the first threaded rod, and a first stepper motor disposed on the inner wall of the coating chamber for driving the first threaded rod.

[0010] Preferably, the internal coating unit includes a first channel disposed on the first threaded block and slidably engaged with the support plate, a first mounting plate slidably disposed on the inner wall of the first channel, a first injection tube penetrating and rotatably disposed on the first mounting plate, a sleeve sleeved on the outer wall of the first injection tube, several sets of first rod brushes disposed at one end of the first injection tube, several sets of second rod brushes disposed at one end of the sleeve via L-shaped connecting rods and rotating in the opposite direction to the first rod brushes, a first nozzle disposed at the bottom of the first injection tube and located at the sleeve port, a first gear disposed on the first injection tube, an internal gear ring rotatably disposed on the first mounting plate and connected to the sleeve via L-shaped connecting rods, a second gear rotatably disposed on the first mounting plate and used to simultaneously drive the first gear and the internal gear ring, a second stepper motor disposed on the first mounting plate and used to drive the second gear, a first magnet block disposed on the first mounting plate, a first hydraulic component disposed on the outer wall of the coating chamber, and a first electromagnet disposed on the output shaft of the first hydraulic component and matched with the first magnet block.

[0011] Preferably, the external coating unit includes a liquid storage box disposed on the first mounting plate and connected to the first liquid injection pipe, a second liquid injection pipe disposed on the first mounting plate and connected to the liquid storage box, a second nozzle disposed at the end of the second liquid injection pipe, and a recycling box disposed on the first mounting plate for collecting waste liquid dripping from the outer wall of the pipe fitting.

[0012] Preferably, the reverse gear assembly includes a second threaded block threaded through the first threaded rod, a second channel disposed on the second threaded block and slidably engaged with the support plate, a second mounting plate slidably disposed on the inner wall of the second channel, a through rod that passes through and is rotatably disposed on the second mounting plate, several sets of arc-shaped reflectors disposed at one end of the through rod and having an electric heating plate on their surface, a first bevel gear disposed at the other end of the through rod, a second bevel gear disposed on the second mounting plate via an ear plate and used to drive the first bevel gear, a third gear disposed on the second mounting plate and driven by a belt and pulley transmission method to drive the second bevel gear, a rack disposed on the inner wall of the second channel and used to drive the third gear, and a second magnet block disposed on the second mounting plate.

[0013] Preferably, the support assembly includes a turntable unit slidably disposed at the bottom of the coating chamber, a clamping unit disposed on the turntable unit, and a rotating unit disposed on the clamping unit;

[0014] The turntable unit includes a second threaded rod rotatably disposed inside the coating chamber, a third threaded block threaded through the second threaded rod, a turntable rotatably disposed on the third threaded block, a third stepper motor disposed inside the third threaded block for driving the turntable, and a fourth stepper motor disposed on the inner wall of the coating chamber for driving the second threaded rod.

[0015] Preferably, the clamping unit includes two sets of hollow storage plates disposed on the turntable, a lifting plate disposed inside the hollow storage plates, two sets of uprights disposed on the lifting plates, a first upright ring disposed on the upper end of one of the uprights, a second upright ring disposed on the upper end of the other upright, an external toothed ring rotatably disposed on the side of the first upright ring for clamping one end of the pipe fitting, several sets of insert rods penetrating and slidably disposed on the second upright ring, an elastic element disposed between one end of the insert rod and the side of the second upright ring, a clamping ring disposed between the other ends of the insert rod, a ring pad disposed on the side of the clamping ring for clamping the other end of the pipe fitting, and a second hydraulic element disposed at the bottom of the turntable for driving the lifting plate to lift and lower the pipe fitting.

[0016] Preferably, the rotating unit includes a fourth gear mounted on the upright for driving the external gear ring, and a fifth stepper motor mounted on the upright for driving the fourth gear.

[0017] Preferably, the vacuuming mechanism includes a vacuum generator disposed on the top of the chassis and a pipe disposed on the vacuum generator and connected to the inside of the chassis.

[0018] Preferably, the evaporation mechanism includes an evaporation chamber disposed inside the casing and an output pipe disposed on the inner wall of the evaporation chamber for releasing the vapor-deposited material into the coating chamber.

[0019] The beneficial effects of this invention are:

[0020] (1) In this invention, by setting up the coating component and the reverse blocking component together, on the one hand, the primer can be applied to the inner and outer walls of the pipe at the same time, and the inner wall of the pipe can be coated in both the forward and reverse directions, ensuring that both sides of the convex strips on the inner wall of the pipe can be coated with primer, which improves the uniformity of the primer coating on the inner wall of the pipe and is beneficial to the coating work of the inner wall of the pipe; on the other hand, the inner and outer walls of the pipe can be coated sequentially, ensuring that the surface of the convex strips on the inner wall of the pipe is uniformly coated, which improves the overall coating effect of the pipe, has a high degree of automation, and can coat pipes in batches, increasing the economic benefits of enterprises.

[0021] (2) In this invention, by setting up a reverse baffle component and an evaporation mechanism, on the one hand, the vapor-deposited material can be reflected onto the inner wall of the pipe and a small airflow opposite to the direction of the vapor-deposited material can be generated, increasing the residence time of the vapor-deposited material in the pipe so that more vapor-deposited material can be deposited on the inner wall of the pipe, thus improving the coating effect on the inner wall of the pipe; on the other hand, the vapor-deposited material accumulated on the surface of the arc-shaped reflector can be heated and evaporated again, and thrown back onto the inner wall of the pipe, thus avoiding the waste of vapor-deposited material.

[0022] (3) In this invention, the clamping unit and the rotating unit work together to drive the pipe to rise and suspend, which facilitates the coating work on the outer wall of the pipe and avoids the hollow shelf from contacting the outer wall of the pipe, preventing the hollow shelf 4221 from interfering and scraping off the vapor-deposited material on the outer wall of the pipe; on the other hand, it can drive the pipe to rotate, which facilitates the vapor-deposited material to adhere evenly to the outer wall of the pipe, ensuring the overall coating efficiency of the pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the vacuum system for an evaporation coating machine.

[0024] Figure 2 This is a schematic diagram of the internal structure of the chassis.

[0025] Figure 3 for Figure 2 The front view of the structure.

[0026] Figure 4 This is a structural diagram of the switching component.

[0027] Figure 5 This is a schematic diagram of the coating component.

[0028] Figure 6 This is a schematic diagram of the structure of the first and second brushes.

[0029] Figure 7 This is a schematic diagram of the internal toothed ring.

[0030] Figure 8 This is a schematic diagram of the reverse gear assembly.

[0031] Figure 9 This is a structural schematic diagram of the supporting component.

[0032] Figure 10 This is a schematic diagram of the clamping unit.

[0033] Figure 11 for Figure 10 The front view of the structure.

[0034] Figure 12 This is a schematic diagram of the transmission process of the clamping unit carrying the pipe as it rises.

[0035] Figure 13 This is a schematic diagram showing the state of the pipe fitting after it has finished rising. Detailed Implementation

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1-13 As shown, an evaporation coating machine vacuum system includes a vacuuming mechanism 2 located above a housing 1, an evaporation mechanism 3 located inside the housing 1, and a coating mechanism 4 located inside the housing 1. The coating mechanism 4 includes a coating chamber 41 located inside the housing 1, a support assembly 42 located inside the coating chamber 41 for placing a pipe, an application assembly 43 located inside the coating chamber 41 for applying primer to the inner and outer walls of the pipe, a backstop assembly 44 located inside the coating chamber 41 for guiding the evaporation material to the inner wall of the pipe, and a switching assembly 45 located inside the coating chamber 41 for switching the positions of the application assembly 43 and the backstop assembly 44. The inner wall of the pipe has several sets of protrusions evenly distributed, and the cross-section of the protrusions is arc-shaped or semi-circular.

[0039] The coating assembly 43 includes an inner coating unit 431 disposed on the switching assembly 45 for coating the inner wall of the pipe fitting, and an outer coating unit 432 disposed on the switching assembly 45 for coating the outer wall of the pipe fitting.

[0040] In this embodiment, the coating component 43 and the reverse component 44 work together to simultaneously coat the inner and outer walls of the pipe with primer, applying the primer to the inner wall of the pipe in both forward and reverse directions. This ensures that both sides of the convex strips on the inner wall of the pipe can be coated with primer, improving the uniformity of the primer coating on the inner wall of the pipe and facilitating the coating process. On the other hand, the inner and outer walls of the pipe can be coated sequentially, ensuring uniform coating on the surface of the convex strips on the inner wall of the pipe, improving the overall coating effect of the pipe. This method is highly automated and allows for batch coating of pipes, increasing the economic benefits for enterprises.

[0041] In detail, the pipe is placed flat between the two hollow shelves 4221 of the supporting component 42, and the clamping unit 422 clamps the pipe port. The vacuuming mechanism 2 evacuates the inside of the casing 1 into a vacuum state. Then, the second hydraulic component 4229 drives the clamping unit 422 to lift the pipe to a designated position, making the pipe coaxial with the output pipe 32 of the evaporation mechanism 3. Then, the inner coating unit 431 and the outer coating unit 432 simultaneously coat the inner and outer walls of the pipe with primer. The switching component 45 changes the positions of the coating component 43 and the reverse component 44, so that the reverse component 44 is facing the pipe port. The vapor-deposited material generated by the evaporation mechanism 3 is deposited from the pipe. The output tube 32 sprays the material into the coating mechanism 4. The arc-shaped reflector 445 evenly reflects the vapor-deposited material sprayed from the output tube 32 onto the inner wall of the tube. The vapor-deposited material attached to the surface of the arc-shaped reflector 445 evaporates again and is thrown onto the inner wall of the tube, avoiding waste of the vapor-deposited material. Then, the turntable unit 421 drives the clamping unit 422 to rotate the tube by 90 degrees, so that the output tube 32 faces the side of the tube. The second threaded rod 4211 drives the clamping unit 422 to move the tube horizontally. At the same time, the rotating unit 423 drives the clamping unit 422 to rotate the tube, thereby uniformly coating the outer wall of the tube. After the coating work is completed, the tube is taken out.

[0042] Further, if Figure 2-4 As shown, the switching assembly 45 includes a support plate 451 disposed inside the coating chamber 41, a first threaded rod 452 disposed inside the coating chamber 41, a first threaded block 453 threaded through the first threaded rod 452, and a first stepper motor 454 disposed on the inner wall of the coating chamber 41 for driving the first threaded rod 452.

[0043] In this embodiment, the switching component 45 can be used to switch the working positions of the application component 43 and the anti-blocking component 44, so that the application component 43 and the anti-blocking component 44 work alternately.

[0044] In detail, the first stepper motor 454 drives the first threaded rod 452 to rotate, thereby driving the coating component 43 and the reverse component 44 to move simultaneously a specified distance, so as to achieve the purpose of switching workstations.

[0045] Further, if Figure 2-7As shown, the internal coating unit 431 includes a first channel 4311 disposed on the first threaded block 453 and slidably engaged with the support plate 451, a first mounting plate 4312 slidably disposed on the inner wall of the first channel 4311, a first injection tube 4313 penetrating and rotatably disposed on the first mounting plate 4312, a sleeve 4314 sleeved on the outer wall of the first injection tube 4313, several sets of first rod brushes 4315 disposed at one end of the first injection tube 4313, several sets of second rod brushes disposed at one end of the sleeve 4314 via L-shaped connecting rods and rotating in the opposite direction to the first rod brushes 4315, and a first... A nozzle, a first gear 4316 disposed on the first injection tube 4313, an internal gear ring 4317 rotatably disposed on the first mounting plate 4312 and connected to the sleeve 4314 via an L-shaped connecting rod, a second gear 4318 rotatably disposed on the first mounting plate 4312 and used to simultaneously drive the first gear 4316 and the internal gear ring 4317, a second stepper motor disposed on the first mounting plate 4312 and used to drive the second gear 4318, a first magnet block disposed on the first mounting plate 4312, a first hydraulic component disposed on the outer wall of the coating chamber 41, and a first electromagnet 4319 disposed on the output shaft of the first hydraulic component and matched with the first magnet block;

[0046] The external coating unit 432 includes a liquid storage box 4321 disposed on the first mounting plate 4312 and connected to the first liquid injection pipe 4313, a second liquid injection pipe 4322 disposed on the first mounting plate 4312 and connected to the liquid storage box 4321, a second nozzle 4323 disposed at the end of the second liquid injection pipe 4322, and a recovery box 4324 disposed on the first mounting plate 4312 for collecting waste liquid dripping from the outer wall of the pipe fitting.

[0047] It should be noted that the liquid storage box 4321 stores polyvinyl chloride resin liquid, which is used as a primer to coat the inner and outer walls of the pipe fitting.

[0048] It is worth mentioning that both the first and second brushes consist of a shaft and a long-bristled brush.

[0049] In this embodiment, by cooperating with the inner coating unit 431 and the outer coating unit 432, primer can be applied to both the inner and outer walls of the pipe simultaneously.

[0050] In detail, the first hydraulic component drives the first electromagnet 4319 to contact the first magnet block of the first mounting plate 4312. The first electromagnet 4319 is energized and magnetically attracts the first magnet block. Then, the first hydraulic component drives the first injection tube 4313 and the second injection tube 4322 forward through the first mounting plate 4312 into the interior of the fitting. The first nozzle sprays primer onto the inner wall of the fitting, and the second nozzle 4323 sprays primer onto the outer wall of the fitting. Simultaneously, the first hydraulic component drives the first injection tube 4313 and the second injection tube 4322... The injection tube 4322 retracts and resets. The second stepper motor drives the second gear 4318 to drive the internal gear ring 4317 and the first gear 4316 to rotate synchronously in both directions. This causes the first brush 4315 of the first injection tube 4313 and the second brush of the second injection tube 4322 to rotate in both directions, applying the primer sprayed on the inner wall of the tube to both sides of the convex strip. At the same time, the rotating unit 423 drives the tube to rotate through the clamping unit 422, so that the second nozzle 4323 evenly coats the outer wall of the tube with paint.

[0051] Further, if Figure 4 and Figure 8 As shown, the reverse gear assembly 44 includes a second threaded block 441 threaded through the first threaded rod 452, a second channel 442 disposed on the second threaded block 441 and slidably engaged with the support plate 451, a second mounting plate 443 slidably disposed on the inner wall of the second channel 442, a through rod 444 passing through and rotatably disposed on the second mounting plate 443, several sets of arc-shaped reflectors 445 disposed at one end of the through rod 444 and having an electric heating plate on their surface, a first bevel gear 446 disposed at the other end of the through rod 444, a second bevel gear 447 disposed on the second mounting plate 443 via an ear plate and used to drive the first bevel gear 446, a third gear 448 disposed on the second mounting plate 443 and driven by a belt and pulley transmission method to drive the second bevel gear 447, a rack 449 disposed on the inner wall of the second channel 442 and used to drive the third gear 448, and a second magnet block disposed on the second mounting plate 443.

[0052] In this embodiment, by using the counter-blocking component 44 and the evaporation mechanism 3 together, on the one hand, the vapor-deposited material can be reflected onto the inner wall of the pipe, and a small airflow opposite to the direction of the vapor-deposited material can be generated, increasing the residence time of the vapor-deposited material in the pipe so that more vapor-deposited material can be deposited on the inner wall of the pipe, thus improving the coating effect on the inner wall of the pipe; on the other hand, the vapor-deposited material accumulated on the surface of the arc-shaped reflector 445 can be heated and evaporated again, and thrown back onto the inner wall of the pipe, thus avoiding the waste of vapor-deposited material.

[0053] In detail, after the switching component 45 switches the reverse gear component 44 to face the port of the pipe fitting, the first hydraulic component drives the first electromagnet 4319 to contact the second magnet block of the second mounting plate 443. The first electromagnet 4319 is energized and magnetically attracts the second magnet block. The first hydraulic component drives the arc-shaped reflector 445 to move forward into the pipe fitting. At the same time, the electric heating plate makes the surface of the arc-shaped reflector 445 high temperature. Then, the vapor-deposited material sprayed from the output pipe 32 enters the pipe fitting. The first hydraulic component drives the arc-shaped reflector 445 to retract and reset. During the retraction process, the rack 449 drives the third gear 448 to rotate. The third gear 448 drives the second bevel gear 447 through the transmission of belt and pulley. The second bevel gear 447 drives the through rod 444 to rotate through the first bevel gear 446, so that the arc-shaped reflector 445 rotates during the retraction process, reflecting the vapor-deposited material onto the inner wall of the pipe fitting.

[0054] Further, if Figure 2 and Figure 9-13 As shown, the carrier assembly 42 includes a turntable unit 421 slidably disposed at the bottom of the coating chamber 41, a clamping unit 422 disposed on the turntable unit 421, and a rotating unit 423 disposed on the clamping unit 422.

[0055] The turntable unit 421 includes a second threaded rod 4211 rotatably disposed inside the coating chamber 41, a third threaded block 4212 threaded through the second threaded rod 4211, a turntable 4213 rotatably disposed on the third threaded block 4212, a third stepper motor disposed inside the third threaded block 4212 and used to drive the turntable 4213, and a fourth stepper motor 4214 disposed on the inner wall of the coating chamber 41 and used to drive the second threaded rod 4211.

[0056] The clamping unit 422 includes two sets of hollow storage plates 4221 disposed on the turntable 4213, a lifting plate 4222 that is lifted and lowered inside the hollow storage plate 4221, two sets of uprights 4223 disposed on the lifting plate 4222, a first upright ring 4224 disposed on the upper end of one of the uprights 4223, a second upright ring 4225 disposed on the upper end of the other upright 4223, and an outer ring 4225 rotatably disposed on the side of the first upright ring 4224 for clamping one end of the pipe fitting. The components include a toothed ring 4226, several sets of insert rods 4227 that pass through and slide on the second vertical ring 4225, an elastic member disposed between one end of the insert rod 4227 and the side of the second vertical ring 4225, a clamping ring 4228 disposed between the other ends of the insert rods 4227, a ring pad disposed on the side of the clamping ring 4228 for clamping the other end of the pipe fitting, and a second hydraulic component 4229 disposed at the bottom of the turntable 4213 for driving the lifting plate 4222 to lift and lower the pipe fitting.

[0057] The rotating unit 423 includes a fourth gear 4231 mounted on a vertical rod 4223 for driving an external gear ring 4226, and a fifth stepper motor 4232 mounted on the vertical rod 4223 for driving the fourth gear 4231.

[0058] In this embodiment, the clamping unit 422 and the rotating unit 423 work together to drive the pipe to rise and suspend in the air, which facilitates the coating work on the outer wall of the pipe and avoids the hollow shelf 4221 from contacting the outer wall of the pipe, thus preventing the hollow shelf 4221 from interfering with and scraping off the vapor-deposited material on the outer wall of the pipe. On the other hand, the pipe can be driven to rotate, which facilitates the uniform adhesion of the vapor-deposited material to the outer wall of the pipe, ensuring the overall coating effect of the pipe.

[0059] In detail, the pipe is placed flat on the two hollow storage plates 4221 of the clamping unit 422. The clamping ring 4228, driven by the elastic element, cooperates with the external gear ring 4226 to clamp the two ends of the pipe. The second hydraulic element 4229 drives the lifting plate 4222 and the upright 4223 to raise the pipe to a specified height so that the outer wall of the pipe can be coated with primer. The turntable 4213 drives the clamping unit 422 to rotate the pipe by 90 degrees so that the output pipe 32 faces the side of the pipe. The second threaded rod 4211 drives the pipe to move horizontally. At the same time, the fifth stepper motor 4232 drives the fourth gear 4231 to rotate the external gear ring 4226. The external gear ring 4226 drives the pipe to rotate, so that the outer wall of the pipe can be coated.

[0060] Further, if Figure 1-3 As shown, the vacuuming mechanism 2 includes a vacuum generator 21 disposed on the top of the chassis 1 and a pipe 22 disposed on the vacuum generator 21 and connected to the inside of the chassis 1.

[0061] It should be noted that the structure and function of the vacuum generator 21 are existing technologies and will not be described in detail here.

[0062] In this embodiment, the inside of the chassis 1 is evacuated to a vacuum state by means of a vacuum generator 21.

[0063] Further, if Figure 1-3 As shown, the evaporation mechanism 3 includes an evaporation chamber 31 disposed inside the housing 1 and an output pipe 32 disposed on the inner wall of the evaporation chamber 31 for releasing the vaporized material into the coating chamber 41.

[0064] It should be noted that the existing evaporation source is installed inside the evaporation chamber 31.

[0065] In this embodiment, through the output pipe 32, the vapor deposition material generated by the evaporation chamber 31 enters the coating chamber 41 from the output pipe 32 and is sprayed onto the inner and outer walls of the pipe.

[0066] Example 2

[0067] like Figure 1 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0068] Further, if Figure 1 As shown, a sealing door 411 is provided on the side of the coating chamber 41.

[0069] In this embodiment, the sealing door 411 facilitates the handling of pipes inside the coating chamber 41 and maintains the airtightness of the coating chamber 41.

[0070] Working process:

[0071] First, the pipe fitting is placed flat between the two hollow storage plates 4221 of the supporting component 42. The clamping unit 422 clamps the pipe fitting port. The vacuuming mechanism 2 evacuates the inside of the casing 1 into a vacuum state. Then, the second hydraulic component 4229 drives the clamping unit 422 to lift the pipe fitting to the designated position, making the pipe fitting coaxial with the output pipe 32 of the evaporation mechanism 3. Then, the inner coating unit 431 and the outer coating unit 432 simultaneously coat the inner and outer walls of the pipe fitting with primer. The switching component 45 changes the positions of the coating component 43 and the reverse blocking component 44, so that the reverse blocking component 44 is facing the pipe fitting port. The vapor-deposited material generated by the evaporation mechanism 3 flows from the output pipe... The material is ejected from the output tube 32 into the coating mechanism 4. The arc-shaped reflector 445 evenly reflects the vapor-deposited material ejected from the output tube 32 onto the inner wall of the tube. The vapor-deposited material adhering to the surface of the arc-shaped reflector 445 evaporates again and is thrown onto the inner wall of the tube, avoiding waste of the vapor-deposited material. Then, the turntable unit 421 drives the clamping unit 422 to rotate the tube by 90 degrees, so that the output tube 32 faces the side of the tube. The second threaded rod 4211 drives the clamping unit 422 to move the tube horizontally. At the same time, the rotating unit 423 drives the clamping unit 422 to rotate the tube, thereby uniformly coating the outer wall of the tube. After the coating work is completed, the tube is taken out.

[0072] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0073] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the number.

[0074] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An evaporation coating system, comprising a vacuuming mechanism disposed above a chassis, an evaporation mechanism disposed inside the chassis, and a coating mechanism disposed inside the chassis, characterized in that, The coating mechanism includes a coating chamber located inside the chassis, a support assembly located inside the coating chamber for placing the pipe, a coating assembly located inside the coating chamber for applying primer to the inner and outer walls of the pipe, a backstop assembly located inside the coating chamber for guiding the vapor-deposited material to the inner wall of the pipe, and a switching assembly located inside the coating chamber for switching the positions of the coating assembly and the backstop assembly. The inner wall of the pipe has several sets of protrusions evenly distributed. The coating assembly includes an inner coating unit disposed on the switching assembly for coating the inner wall of the pipe fitting and an outer coating unit disposed on the switching assembly for coating the outer wall of the pipe fitting. The reverse gear assembly includes a second threaded block threaded through the first threaded rod, a second channel disposed on the second threaded block and slidably engaged with a support plate, a second mounting plate slidably disposed on the inner wall of the second channel, a through rod that passes through and is rotatably disposed on the second mounting plate, several sets of arc-shaped reflectors disposed at one end of the through rod and having electric heating plates on their surfaces, a first bevel gear disposed at the other end of the through rod, a second bevel gear disposed on the second mounting plate via an ear plate and used to drive the first bevel gear, a third gear disposed on the second mounting plate and driven by a belt and pulley transmission method to drive the second bevel gear, a rack disposed on the inner wall of the second channel and used to drive the third gear, and a second magnet block disposed on the second mounting plate.

2. The evaporation coating system according to claim 1, characterized in that, The switching assembly includes a support plate disposed inside the coating chamber, a first threaded rod disposed inside the coating chamber, a first threaded block threaded through the first threaded rod, and a first stepper motor disposed on the inner wall of the coating chamber for driving the first threaded rod.

3. The evaporation coating system according to claim 2, characterized in that, The internal coating unit includes a first channel disposed on the first threaded block and slidably engaged with the support plate, a first mounting plate slidably disposed on the inner wall of the first channel, a first injection tube penetrating and rotatably disposed on the first mounting plate, a sleeve sleeved on the outer wall of the first injection tube, several sets of first rod brushes disposed at one end of the first injection tube, several sets of second rod brushes disposed at one end of the sleeve via L-shaped connecting rods and rotating in the opposite direction to the first rod brushes, a first nozzle disposed at the bottom of the first injection tube and located at the sleeve port, a first gear disposed on the first injection tube, an internal gear ring rotatably disposed on the first mounting plate and connected to the sleeve via L-shaped connecting rods, a second gear rotatably disposed on the first mounting plate and used to simultaneously drive the first gear and the internal gear ring, a second stepper motor disposed on the first mounting plate and used to drive the second gear, a first magnet block disposed on the first mounting plate, a first hydraulic component disposed on the outer wall of the coating chamber, and a first electromagnet disposed on the output shaft of the first hydraulic component and matched with the first magnet block.

4. The evaporation coating system according to claim 3, characterized in that, The external coating unit includes a liquid storage box disposed on the first mounting plate and connected to the first injection pipe, a second injection pipe disposed on the first mounting plate and connected to the liquid storage box, a second nozzle disposed at the end of the second injection pipe, and a recycling box disposed on the first mounting plate for collecting waste liquid dripping from the outer wall of the pipe fitting.

5. The evaporation coating system according to claim 1, characterized in that, The support assembly includes a turntable unit slidably disposed at the bottom of the coating chamber, a clamping unit disposed on the turntable unit, and a rotating unit disposed on the clamping unit; The turntable unit includes a second threaded rod rotatably disposed inside the coating chamber, a third threaded block threaded through the second threaded rod, a turntable rotatably disposed on the third threaded block, a third stepper motor disposed inside the third threaded block for driving the turntable, and a fourth stepper motor disposed on the inner wall of the coating chamber for driving the second threaded rod.

6. The evaporation coating system according to claim 5, characterized in that, The clamping unit includes two sets of hollow storage plates on the turntable, a lifting plate that is lifted and lowered inside the hollow storage plates, two sets of uprights on the lifting plates, a first upright ring on the upper end of one of the uprights, a second upright ring on the upper end of the other upright, an external toothed ring rotatably disposed on the side of the first upright ring for clamping one end of the pipe fitting, several sets of insert rods that pass through and slide on the second upright ring, an elastic element disposed between one end of the insert rod and the side of the second upright ring, a clamping ring disposed between the other ends of the insert rod, a ring pad disposed on the side of the clamping ring for clamping the other end of the pipe fitting, and a second hydraulic element disposed at the bottom of the turntable for driving the lifting plate to lift and lower the pipe fitting.

7. The evaporation coating system according to claim 6, characterized in that, The rotating unit includes a fourth gear mounted on the upright and used to drive the external gear ring, and a fifth stepper motor mounted on the upright and used to drive the fourth gear.

8. The evaporation coating system according to claim 1, characterized in that, The vacuuming mechanism includes a vacuum generator mounted on the top of the chassis and a pipe mounted on the vacuum generator and connected to the inside of the chassis.

9. The evaporation coating system according to claim 1, characterized in that, The evaporation mechanism includes an evaporation chamber disposed inside the chassis and an output pipe disposed on the inner wall of the evaporation chamber for releasing the vaporized material into the coating chamber.

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