Multifunctional double-cavity vacuum coating device

Abstract

The utility model provides a multifunctional double-cavity vacuum coating device which comprises a spraying chamber and a vacuum coating chamber, the vacuum coating chamber is arranged at the top of the spraying chamber, and the vacuum coating chamber is communicated with the spraying chamber through a through hole. A rotating frame is arranged in the spraying chamber, the rotating frame is connected into the spraying chamber through a guide column, the guide column is vertically connected into the spraying chamber, the rotating frame is in driving connection with a driving device, and the driving device drives the rotating frame to ascend into the vacuum coating chamber for vacuum coating. According to the utility model, priming paint coating, vacuum coating and finishing paint coating are integrated into one device, so that workpiece carrying is reduced, workpiece collision is avoided, the surface quality of workpieces is improved, and the production efficiency is improved. The spraying chamber and the vacuum coating chamber which are arranged up and down can reduce the occupied area of equipment, and the rotating frame keeps rotating at a constant speed in the spraying process, so that spraying is more uniform, and the quality of workpieces is improved.

Description

Technical Field

[0001] This utility model belongs to the field of surface treatment technology, specifically relating to a multifunctional dual-cavity vacuum coating device. Background Technology

[0002] With the widespread application of plastic products in various fields, the requirements for their appearance and performance are becoming increasingly stringent. PVD (Physical Vapor Deposition) technology for decorative films on plastic products has become an important means to improve their appearance and performance. Currently, there are two main PVD technologies for decorative films on plastic products: vacuum evaporation deposition and magnetron sputtering deposition.

[0003] Vacuum evaporation coating is a technique that uses heat to evaporate the coating material under vacuum conditions, which is then deposited onto the surface of plastic products to form a thin film. This technology features simple equipment structure, easy operation, and high production efficiency, making it a widely used coating technology for plastic parts. The typical coating process flow is: cleaning and degreasing – mounting – applying primer – curing – evaporation coating – applying topcoat – curing – removal – inspection. However, current plastic parts coating processes require the use of various equipment, such as cleaning and degreasing equipment, painting equipment, curing equipment, and evaporation coating equipment. This not only increases production costs and floor space requirements but also reduces production efficiency and product quality stability.

[0004] Therefore, the above problems urgently need to be solved. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a multifunctional dual-cavity vacuum coating device that can perform spraying and coating functions, reducing equipment costs, reducing equipment floor space, reducing workpiece handling, avoiding workpiece collision damage, and improving production efficiency and workpiece quality.

[0006] Technical Solution: To achieve the above objectives, this utility model provides a multifunctional dual-cavity vacuum coating device, including a spraying chamber and a vacuum coating chamber. The vacuum coating chamber is located at the top of the spraying chamber and is connected to the spraying chamber through a through hole. A rotating frame is installed inside the spraying chamber, connected to the chamber via guide pillars. The guide pillars are vertically connected to the spraying chamber. A driving device is connected to the rotating frame, driving it to rise into the vacuum coating chamber for vacuum coating. The production method of this utility model includes placing a cleaned workpiece on the rotating frame, spraying a primer onto the workpiece on the rotating frame, and rotating the frame at a uniform speed during the spraying process to form a uniform primer film on the workpiece surface. The workpiece is cured in the spraying chamber to obtain a workpiece with a primer film. The driving device drives the rotating frame to rise, lifting the workpiece with the primer film into the vacuum coating chamber for vacuum electroplating to obtain a workpiece with a vacuum coating layer. The drive unit lowers the rotating frame, returning the workpiece with the vacuum-coated layer to the spraying chamber. The worker then sprays topcoat onto the workpiece. During the topcoat spraying process, the rotating frame rotates at a constant speed, and the workpiece is further cured within the spraying chamber, resulting in a coated workpiece with the topcoat layer. Finally, the coated workpiece with the topcoat layer is removed from the rack. This invention integrates primer application, vacuum coating, and topcoat application into a single device, reducing workpiece handling, preventing workpiece collisions, improving workpiece surface quality, and increasing production efficiency. The vertically positioned spraying chamber and vacuum coating chamber reduce the equipment's footprint, and the uniform rotation of the rotating frame during spraying ensures more even coating and improved workpiece quality.

[0007] Furthermore, in the aforementioned multifunctional dual-cavity vacuum coating device, the rotating frame includes a base plate, with a turntable rotatably connected to the top surface of the base plate. A motor connected to the bottom surface of the base plate drives the turntable to rotate. A column is connected along the center of rotation of the turntable, and multiple supports are connected along the sides of the column. By driving the turntable to rotate with the motor, the rotation speed of the turntable can be precisely controlled, ensuring uniform rotation of the turntable, resulting in a uniform film layer and ensuring workpiece quality. The supports are designed in multiple layers from top to bottom, allowing the workpieces to be evenly arranged along the column, which can improve space utilization and increase production efficiency.

[0008] Furthermore, in the aforementioned multifunctional dual-cavity vacuum coating apparatus, the inner diameter of the through-hole and the outer diameter of the turntable are correspondingly set. A sealing ring is connected along the lower opening of the through-hole, and a sealing ring is connected along the upper outer edge of the turntable. When the drive device drives the rotating frame to rise into the vacuum coating chamber, the turntable is sealed and connected within the through-hole. Sealing the turntable within the through-hole improves the sealing performance of the vacuum coating chamber, ensures the vacuuming effect, and improves the quality of vacuum coating.

[0009] Furthermore, in the aforementioned multifunctional dual-cavity vacuum coating apparatus, the driving device includes a lead screw arranged parallel to the guide post. The lead screw is connected to the base plate via a nut. The top of the lead screw is connected to the top of the spraying chamber, and a lead screw drive motor is connected to the bottom surface of the spraying chamber. The lead screw drive motor is connected to the lead screw drive, and the lead screw drive motor drives the base plate to rise and fall via the lead screw. This structure, where the lead screw drive motor drives the base plate to rise and fall, can precisely control the height of the base plate, ensuring that the turntable is sealed within the through hole.

[0010] Furthermore, in the aforementioned multifunctional dual-chamber vacuum coating apparatus, a heating device is provided on the side wall of the spraying chamber to heat and cure the painted workpiece. The heating device is an electric heating tube, which can precisely control the heating temperature, improve the curing efficiency of the sprayed workpiece, and increase production efficiency.

[0011] Furthermore, in the aforementioned multifunctional dual-chamber vacuum coating device, an exhaust vent is provided on the top surface of the spraying chamber, and the exhaust vent is connected to an exhaust fan. The exhaust fan is designed to remove a large amount of volatile organic compounds and paint particles generated during the spraying process, protecting personnel health, reducing the concentration of flammable substances, reducing the risk of explosion, controlling the airflow direction, and ensuring the quality of the paint spraying.

[0012] Furthermore, in the aforementioned multifunctional dual-cavity vacuum coating device, an inclined plate is provided in the spraying chamber, and the inclined plate is tilted towards the exhaust port. The inclined plate can guide the airflow along the inclined plate and discharge from the exhaust port, control the airflow direction, improve the diversion effect, and improve the quality of the paint film.

[0013] Furthermore, in the aforementioned multifunctional dual-chamber vacuum coating apparatus, the vacuum coating chamber is connected to a vacuum valve and a vacuum pump, and an evaporation source is installed inside the vacuum coating chamber. To ensure the coating effect, multiple evaporation sources are arranged in an array along the outer periphery of the through hole. When a workpiece with a primer film is lifted into the vacuum coating chamber and the turntable is sealed to the through hole, the vacuum pump is started, and the air inside the vacuum coating chamber is extracted through the vacuum valve, creating a vacuum environment inside the vacuum coating chamber. When the vacuum level reaches the required level, the evaporation source is started, causing the coating material to evaporate. The coating material diffuses to the surface of the workpiece in the vacuum environment and deposits on its surface to form a thin film. After the coating is completed, the evaporation source is turned off, and the workpiece is allowed to cool naturally.

[0014] Furthermore, in the aforementioned multifunctional dual-chamber vacuum coating device, an observation window is provided on the side wall of the vacuum coating chamber. The vacuum coating machine is equipped with monitoring equipment to monitor data such as coating thickness and vacuum level; the monitoring equipment uses standard technical methods. The observation window allows operators to observe the coating status, promptly detect abnormalities, adjust process parameters, and ensure coating quality.

[0015] Furthermore, in the aforementioned multifunctional dual-chamber vacuum coating device, the entrance to the spraying chamber is equipped with a door, and a standing platform is located at the entrance of the spraying chamber. The side of the standing platform away from the spraying chamber is sloped. When it is necessary to cure the sprayed paint film, the door is closed to reduce heat loss, improve curing efficiency and curing effect, and increase production efficiency.

[0016] As can be seen from the above technical solution, this utility model has the following beneficial effects: This multifunctional dual-cavity vacuum coating device integrates primer application, vacuum coating, and topcoat application into one device, reducing workpiece handling, avoiding workpiece collisions, improving workpiece surface quality, and increasing production efficiency. The upper and lower spraying chambers and vacuum coating chambers reduce the equipment's footprint, and the rotating frame maintains rotation during spraying, ensuring more uniform spraying and improving workpiece quality. The turntable is sealed within the through hole, improving the sealing of the vacuum coating chamber, ensuring effective vacuuming, and enhancing the quality of vacuum coating. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the multifunctional dual-cavity vacuum coating device of this utility model;

[0018] Figure 2 This is a cross-sectional view of the multifunctional dual-cavity vacuum coating device of this utility model.

[0019] In the diagram: 1. Spraying chamber, 11. Rotating frame, 111. Base plate, 112. Turntable, 113. Column, 114. Support, 12. Drive device, 121. Lead screw, 15. Heating device, 16. Exhaust fan, 17. Inclined plate, 18. Door, 19. Standing platform, 2. Vacuum coating chamber, 21. Through hole, 22. Inspection window, 3. Guide column. Detailed Implementation

[0020] Example 1

[0021] like Figure 1 The multifunctional dual-chamber vacuum coating apparatus shown includes a spraying chamber 1 and a vacuum coating chamber 2. The vacuum coating chamber 2 is located on top of the spraying chamber 1, and the vacuum coating chamber 2 and the spraying chamber 1 are connected by a through hole 21 (see...). Figure 2 The spraying chamber 1 is connected to a rotating frame 11. The rotating frame 11 is connected to the spraying chamber 1 via a guide post 3. The guide post 3 is vertically connected to the spraying chamber 1. The rotating frame 11 is driven by a driving device 12. The driving device 12 drives the rotating frame 11 to rise into the vacuum coating chamber 2 for vacuum coating.

[0022] In this embodiment, an observation window 22 is provided on the side wall of the vacuum coating chamber 2. The vacuum coating machine is equipped with monitoring equipment to monitor data such as coating thickness and vacuum level. The monitoring equipment is set to conventional technical means. The observation window 22 facilitates the staff to observe the coating status, promptly detect abnormalities, adjust process parameters, and ensure coating quality.

[0023] In this embodiment, a door 18 is provided at the entrance of the spraying chamber 1, and a standing platform 19 is provided at the entrance of the spraying chamber 1. The side of the standing platform 19 away from the spraying chamber 1 is sloped. When it is necessary to cure the sprayed paint film, the door 18 is closed to reduce heat loss, improve curing efficiency and curing effect, and improve production efficiency.

[0024] The production method of this utility model includes the following steps: Opening the door 18, placing the cleaned workpiece on the rotating frame 11, and having a worker spray primer onto the workpiece on the rotating frame 11. During the spraying process, the rotating frame 11 rotates at a uniform speed, forming a uniform primer film on the workpiece surface. Closing the door, the workpiece cures in the spraying chamber 1, resulting in a workpiece with a primer film. The driving device 12 drives the rotating frame 11 upwards, raising the workpiece with the primer film into the vacuum coating chamber 2 for vacuum electroplating, resulting in a workpiece with a vacuum coating layer. The driving device 12 drives the rotating frame 11 downwards, returning the workpiece with the vacuum coating layer to the spraying chamber 1. The door 18 is then closed, and the worker sprays topcoat onto the workpiece with the vacuum coating layer, with the rotating frame 11 rotating at a uniform speed during the topcoat spraying process. Closing the door 18, the workpiece cures again in the spraying chamber 1, resulting in a coated workpiece with a topcoat layer. Finally, the door is opened, and the coated workpiece with the topcoat layer is removed from the shelf.

[0025] like Figure 2The multifunctional dual-chamber vacuum coating apparatus shown includes a rotating frame 11 comprising a base plate 111, with a turntable 112 rotatably connected to the top surface of the base plate 111. A motor connected to the bottom surface of the base plate 111 drives the turntable 112 to rotate. A column 113 is connected along the rotation center of the turntable 112, and multiple supports 114 are connected along the side of the column 113. The inner diameter of the through hole 21 is correspondingly set to the outer diameter of the turntable 112. A sealing ring is connected along the lower opening of the through hole 21 and along the upper outer edge of the turntable 112. When the driving device 12 drives the rotating frame 11 to rise into the vacuum coating chamber 2, the turntable 112 is sealed and connected within the through hole 21. The drive unit 12 includes a lead screw 121 arranged parallel to the guide post 3. The lead screw 121 is driven to the base plate 111 via a nut. The top of the lead screw 121 is connected to the top of the spraying chamber 1. A lead screw drive motor is connected to the bottom of the spraying chamber 1. The lead screw drive motor and the lead screw 121 are driven to lift the base plate 111. This structure, where the lead screw drive motor lifts the base plate 111 via the lead screw 121, allows for precise control of the height of the base plate 111, ensuring that the turntable 112 is sealed within the through hole 21. A heating device 15 is provided on the side wall of the spraying chamber 1 to heat and cure the painted workpiece. The heating device 15 is an electric heating tube. An exhaust port is provided on the top surface of the spraying chamber 1, and an exhaust fan 16 is connected to the exhaust port. An inclined plate 17 is provided inside the spraying chamber 1, tilted towards the exhaust port. The inclined plate 17 is designed to guide airflow along the inclined plate 17 and discharge it from the exhaust port, controlling the direction of airflow. The vacuum coating chamber 2 is connected to a vacuum valve and a vacuum pump, and an evaporation source is installed inside the vacuum coating chamber 2. To ensure the coating effect, multiple evaporation sources are arranged in an array along the outer periphery of the through hole 21. When a workpiece with a primer film is lifted into the vacuum coating chamber 2 and the turntable 112 is sealed to the through hole 21, the vacuum pump is started, and the air in the vacuum coating chamber 2 is extracted through the vacuum valve to create a vacuum environment inside the vacuum coating chamber 2. When the vacuum level reaches the required level, the evaporation source is started to evaporate the coating material. The coating material diffuses to the surface of the workpiece in the vacuum environment and deposits on its surface to form a thin film. After the coating is completed, the evaporation source is turned off, and the workpiece is allowed to cool naturally.

[0026] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A multifunctional dual-cavity vacuum coating device, characterized in that: It includes a spraying chamber (1) and a vacuum coating chamber (2). The vacuum coating chamber (2) is located on top of the spraying chamber (1). The vacuum coating chamber (2) and the spraying chamber (1) are connected through a through hole (21). A rotating frame (11) is provided in the spraying chamber (1). The rotating frame (11) is connected to the spraying chamber (1) through a guide post (3). The guide post (3) is vertically connected to the spraying chamber (1). The rotating frame (11) is driven by a driving device (12). The driving device (12) drives the rotating frame (11) to rise into the vacuum coating chamber (2) for vacuum coating.

2. The multifunctional dual-cavity vacuum coating apparatus according to claim 1, characterized in that: The rotating frame (11) includes a base plate (111), a turntable (112) is rotatably connected to the top surface of the base plate (111), and a motor connected to the bottom surface of the base plate (111) drives the turntable (112) to rotate; a column (113) is connected along the rotation center of the turntable (112), and multiple supports (114) are connected along the side of the column (113).

3. The multifunctional dual-cavity vacuum coating apparatus according to claim 2, characterized in that: The inner diameter of the through hole (21) and the outer diameter of the turntable (112) are respectively set. A sealing ring is connected along the lower opening of the through hole (21) and a sealing ring is connected along the upper outer edge of the turntable (112). When the driving device (12) drives the rotating frame (11) to rise into the vacuum coating chamber (2), the turntable (112) is sealed and connected in the through hole (21).

4. The multifunctional dual-cavity vacuum coating apparatus according to claim 2, characterized in that: The drive device (12) includes a lead screw (121) arranged parallel to the guide post (3). The lead screw (121) is driven to the base plate (111) by a nut. The top of the lead screw (121) is connected to the top of the spraying chamber (1). The bottom surface of the spraying chamber (1) is connected to a lead screw drive motor. The lead screw drive motor and the lead screw (121) are driven to the base plate (111) to rise and fall through the lead screw (121).

5. The multifunctional dual-cavity vacuum coating apparatus according to claim 1, characterized in that: The side wall of the spraying chamber (1) is provided with a heating device (15), which heats and cures the sprayed workpiece.

6. The multifunctional dual-cavity vacuum coating apparatus according to claim 1, characterized in that: The top surface of the spraying chamber (1) is provided with an exhaust port, and the exhaust port is connected to an exhaust fan (16).

7. The multifunctional dual-cavity vacuum coating apparatus according to claim 6, characterized in that: The spraying chamber (1) is provided with an inclined plate (17), which is inclined towards the exhaust port.

8. The multifunctional dual-cavity vacuum coating apparatus according to claim 1, characterized in that: The vacuum coating chamber (2) is connected to a vacuum valve and a vacuum pump, and an evaporation source is provided inside the vacuum coating chamber (2).

9. The multifunctional dual-cavity vacuum coating apparatus according to claim 8, characterized in that: The side wall of the vacuum coating chamber (2) is provided with an observation window (22).

10. The multifunctional dual-cavity vacuum coating apparatus according to claim 1, characterized in that: The entrance of the spraying chamber (1) is provided with a door (18), and a standing platform (19) is provided at the entrance of the spraying chamber (1). The side of the standing platform (19) away from the spraying chamber (1) is set as an inclined surface.

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