A coating device

Abstract

This application provides a coating apparatus, relating to the field of coating technology. The coating apparatus includes an apparatus body and a cleanroom hood. The cleanroom hood is located outside the apparatus body, and an exhaust pipe is arranged around the apparatus body inside the cleanroom hood. The exhaust pipe has an air intake hole on its side facing the top of the cleanroom hood. The exhaust pipe is used to communicate with an external negative pressure device. This coating apparatus can better ensure the quality of film formation.

Description

Technical Field

[0001] This application relates to the field of coating technology, and more specifically, to a coating apparatus. Background Technology

[0002] Some current coating equipment is equipped with a sealed coating cleanroom hood to maintain the coating atmosphere. Although impurities in the ambient air are filtered by the filter at the top of the cleanroom hood, a small amount of impurities inevitably remain. These impurities are drawn into the cleanroom hood by the fan, and the airflow radiates throughout the coating area. Unfiltered impurities enter the freshly coated liquid film. Therefore, the control of film-forming impurities depends entirely on the quality of the filter. Furthermore, the airflow also disturbs the air field formed directly between the blade and the liquid film during the coating process, causing fluctuations in the liquid output at the blade lip, which in turn affects the uniformity of the film formation. Utility Model Content

[0003] The purpose of this application includes, for example, providing a coating apparatus that can better ensure the quality of film formation.

[0004] The embodiments of this application can be implemented as follows:

[0005] An embodiment of this application provides a coating device, which includes a device body and a clean hood. The clean hood is completely covered outside the device body. An exhaust pipe is arranged around the device body inside the clean hood. The exhaust pipe has an air intake hole on its side facing the top of the clean hood, and the exhaust pipe can be connected to an external negative pressure device.

[0006] By installing an exhaust pipe around the equipment body inside the cleanroom hood, and having an air intake hole on the side of the exhaust pipe facing the top of the cleanroom hood, and connecting the exhaust pipe to an external negative pressure device, when the negative pressure device is running, the exhaust pipe will guide the gas entering the cleanroom hood to the periphery of the equipment body and flow downwards. This airflow guidance method can effectively prevent the gas from directly impacting the coating area, reduce the impact of airflow disturbance on the stability of the liquid output of the cutter head, and reduce the possibility of external impurities entering the coating surface, thereby ensuring the film quality. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a front view of the coating equipment in the embodiments of this application;

[0009] Figure 2 This is a schematic diagram illustrating the internal structure of the coating equipment in an embodiment of this application;

[0010] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0011] Figure 4 This is a schematic diagram illustrating the positional relationship between the first exhaust pipe and the second exhaust pipe in an embodiment of this application;

[0012] Figure 5 for Figure 4 Sectional view along the BB direction.

[0013] Icons: 100-Equipment body; 110-Fixed frame; 120-First connector; 200-Cleanroom hood; 210-Outer frame; 220-Second connector; 221-Through hole; 300-Exhaust pipe; 310-First exhaust pipe; 311-Suction hole; 312-First connecting pipe; 320-Second exhaust pipe; 321-First pipe section; 322-Second pipe section; 400-Buffer; 410-Pressure support. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0018] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0019] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0020] In actual operation, the film quality of coating equipment is often severely affected by environmental impurities. These impurities may originate from external air, and even after purification by filters, small amounts may still remain. Furthermore, the direct impact of airflow on the coating area in traditional designs further exacerbates the interference of impurities on film quality. Therefore, effectively controlling the airflow direction inside the cleanroom and preventing incompletely filtered gas from directly impacting the coating area has become a key technical issue for improving film quality.

[0021] Please refer to Figures 1-5 This application provides a coating apparatus, which includes an apparatus body 100 and a cleanroom hood 200. A fan and a filter are installed on the top of the cleanroom hood 200. External gas, after being filtered by the filter, is delivered into the cleanroom hood 200 by the fan. The cleanroom hood 200 completely covers the apparatus body 100, protecting the coating atmosphere. Furthermore, an exhaust pipe 300 is arranged around the apparatus body 100 inside the cleanroom hood 200. The exhaust pipe 300 has an air intake hole 311 on its side facing the top of the cleanroom hood 200, and the exhaust pipe 300 can communicate with an external negative pressure device.

[0022] By configuring the exhaust pipe 300 and its suction port 311, the gas purified by the filter is guided to flow along a specific path, rather than directly impacting the coating area. In this embodiment, when the external negative pressure device is running, the suction port 311 in the exhaust pipe 300 guides the gas that has passed through the filter into its interior and then discharges it, thereby forming a directional airflow. This directional airflow movement can effectively prevent the gas from directly impacting the coating area, reduce the impact of airflow disturbance on the stability of the liquid output from the cutter head, and reduce the possibility of external impurities entering the coating surface, thus ensuring the film quality.

[0023] It should be noted that the arrangement of the exhaust pipe 300 around the equipment body 100 defines the direction of airflow. After being introduced by the fan, the gas flows towards the periphery of the equipment body 100 and is then guided into the exhaust pipe 300, rather than diffusing into the entire cleanroom hood 200 space. This design not only reduces the direct interference of airflow on the coating area but also enables the effective collection and removal of incompletely filtered gas.

[0024] In this embodiment, a fixed frame 110 is provided on the device body 100, and a first connector 120 connected to the fixed frame 110 is used to connect the device body 100 and the cleanroom hood 200. The cleanroom hood 200 includes an outer frame 210 and a second connector 220 connected to the outer frame 210. A buffer 400 is provided between the first connector 120 and the second connector 220. Specifically, the buffer 400 serves to absorb vibrations transmitted to the cleanroom hood 200 from the outside, preventing external vibrations (such as ground vibrations) from being directly transmitted to the device body 100 via the cleanroom hood 200. This avoids causing the coating roller or scraper of the device body 100 to vibrate, ensuring the device body 100 maintains a stable state and thus achieving a better coating effect. Furthermore, by providing the buffer 400 between the first connector 120 and the second connector 220, airflow disturbances caused by vibration can be effectively avoided, thereby ensuring the stability of the airflow within the cleanroom hood 200 and the quality of the coating process.

[0025] An exhaust pipe 300 is mounted on the second connector 220, which has a through hole 221 communicating with the suction port 311. This design ensures an effective gas flow path between the through hole 221 and the suction port 311. Meanwhile, the presence of the buffer 400 ensures a flexible connection between the first connector 120 and the second connector 220, preventing vibration of the cleanroom hood 200 from being directly transmitted to the equipment body 100.

[0026] In this embodiment, the buffer 400 is a buffer pad, which partially supports the top surface of the first connector 120 and partially supports the top surface of the second connector 220. This allows the buffer pad to effectively isolate the rigid connection between the equipment body 100 and the cleanroom hood 200, thereby reducing the transmission of vibration. Specifically, the buffer pad is provided with two holding members 410, which are respectively connected to the first connector 120 and the second connector 220. Through this holding method, the buffer pad is firmly fixed between the first connector 120 and the second connector 220, ensuring that it can maintain a stable working state during operation.

[0027] When the cleanroom hood 200 vibrates, the vibration is first transmitted to the second connector 220. However, due to the presence of the cushioning pad, the vibration energy is absorbed and dispersed by the cushioning pad, and is not directly transmitted to the first connector 120. At the same time, the two holding members 410 not only fix the position of the cushioning pad, but also ensure that the cushioning pad does not shift or deform when subjected to vibration, thereby further improving its vibration damping effect.

[0028] By setting a buffer pad between the first connector 120 and the second connector 220, the connection between the first connector 120 and the second connector 220 is changed from a traditional rigid connection to a flexible connection, which significantly reduces the impact of vibration of the clean hood 200 on the equipment body 100.

[0029] In this embodiment, the pressing member 410 is a flat steel pressing strip. The two flat steel pressing strips are respectively provided with a first fastener and a second fastener. The first fastener passes through the flat steel pressing strip, the buffer pad and the first connecting member 120 at the same time. The second fastener passes through the flat steel pressing strip, the buffer pad and the second connecting member 220 at the same time.

[0030] The number of first fasteners and second fasteners can both be multiple. Multiple first fasteners are evenly spaced along the extension direction of the flat steel strip. Multiple first fasteners simultaneously pass through the flat steel strip, the buffer pad, and the first connector 120, so that the flat steel strip, the buffer pad, and the first connector 120 are relatively fixed. Multiple second fasteners are evenly spaced along the extension direction of another flat steel strip. Multiple second fasteners simultaneously pass through the flat steel strip, the buffer pad, and the second connector 220, so that the flat steel strip, the buffer pad, and the second connector 220 are relatively fixed.

[0031] Both the first and second fasteners can be bolts. The first connector 120 can be an angle steel bracket, and the second connector 220 can be a connecting plate. The bolts enable quick assembly and disassembly between the flat steel strip and the angle steel bracket or connecting plate.

[0032] It should be understood that the buffer pad plays a key role in vibration reduction in the coating equipment, and the choice of its material directly affects the stability of the airflow in the clean hood 200 during equipment operation and the film formation quality.

[0033] In this embodiment, the buffer pad is a silicone rubber buffer pad. Since silicone rubber has excellent elasticity, wear resistance and aging resistance, it can effectively absorb and disperse the vibration energy of the cleanroom hood 200.

[0034] Based on practical application requirements, other materials with similar properties to silicone rubber can also be selected as alternatives for the cushioning pad. For example, polyurethane foam or closed-cell sponge can be used as alternative materials for the cushioning pad. These materials have good elasticity and energy absorption properties, which can meet the vibration reduction requirements to a certain extent.

[0035] It should be understood that during the operation of the coating equipment, the windows on the side of the clean hood 200 are used for loading and unloading operations. However, opening the windows will allow outside air to enter the clean hood 200, which may carry impurities and affect the film quality.

[0036] In this embodiment, the exhaust pipe 300 includes a first exhaust pipe 310 and a second exhaust pipe 320. The first exhaust pipe 310 and the second exhaust pipe 320 are not connected. The first exhaust pipe 310 is closer to the window than the second exhaust pipe 320, and the negative pressure in the first exhaust pipe 310 is greater than the negative pressure in the second exhaust pipe 320.

[0037] Multiple air intake holes 311 are evenly spaced along the extension direction of the exhaust pipe 300. Specifically, air intake holes 311 are provided on the side of the first exhaust pipe 310 and the second exhaust pipe 320 facing the fan. The number of air intake holes 311 on the first exhaust pipe 310 and the second exhaust pipe 320 is multiple. The multiple air intake holes 311 on the first exhaust pipe 310 are evenly spaced along the extension direction of the first exhaust pipe 310, and the multiple air intake holes 311 on the second exhaust pipe 320 are evenly spaced along the extension direction of the second exhaust pipe 320.

[0038] It should be noted that, because the first exhaust pipe 310 is closer to the window, increasing the negative pressure within it creates an airflow isolation layer at its top. This significantly enhances its ability to absorb impurity gases and prevents impurities from the outside air from entering the coating area. When loading and unloading operations are performed with the window open, impurities from the outside air are preferentially captured and discharged by the first exhaust pipe 310, preventing them from spreading throughout the entire cleanroom hood 200. Meanwhile, the second exhaust pipe 320 maintains airflow stability in other areas of the cleanroom hood 200, ensuring the overall environment remains clean at all times.

[0039] In this embodiment, the second exhaust pipe 320 includes a first pipe segment 321 and two second pipe segments 322 perpendicular to the first pipe segment 321. The first exhaust pipe 310, the first pipe segment 321 and the two second pipe segments 322 are arranged around the device body 100. The end of the second pipe segment 322 away from the first pipe segment 321 extends to the first exhaust pipe 310.

[0040] It should be noted that the equipment body 100 is roughly rectangular. The first exhaust pipe 310 is located on one side of the equipment body 100, and the second exhaust pipe 320 is roughly C-shaped and surrounds three sides of the equipment body 100. Specifically, the first exhaust pipe 310 and the first pipe section 321 are located on opposite sides of the equipment body 100, and the two second pipe sections 322 are located on the other opposite sides of the equipment body 100. When gas enters from the top of the cleanroom hood 200, the first exhaust pipe 310, the first pipe section 321 and the two second pipe sections 322 can guide the airflow to the periphery of the equipment body 100, thereby reducing the impact on the film-forming area.

[0041] In this embodiment, the first exhaust pipe 310 and the second exhaust pipe 320 are respectively provided with a first connecting pipe 312 and a second connecting pipe. Both the first connecting pipe 312 and the second connecting pipe are provided with pressure regulating devices, and both the first connecting pipe 312 and the second connecting pipe are used to connect with external negative pressure equipment.

[0042] It should be noted that the pressure regulating device is specifically used to adjust the gas flow rate in the first connecting pipe 312 and the second connecting pipe, thereby indirectly controlling the negative pressure value in the first exhaust pipe 310 and the second exhaust pipe 320. Specifically, by adjusting the two pressure regulating devices, the negative pressure in the first exhaust pipe 310 can be made greater than the negative pressure in the second exhaust pipe 320.

[0043] When loading and unloading are performed with the window open, the first exhaust pipe 310, being closer to the window and having a higher internal negative pressure, can more efficiently absorb gaseous impurities entering from the outside, preventing them from spreading throughout the entire cleanroom 200 space. Meanwhile, the second exhaust pipe 320 maintains a lower negative pressure value, responsible for handling airflow in other areas of the cleanroom 200.

[0044] In this embodiment, both the first exhaust pipe 310 and the second exhaust pipe 320 are square pipes. The two opposite sides of the first exhaust pipe 310 are respectively provided with an air intake hole 311 and a first connecting pipe 312, and the two opposite sides of the second exhaust pipe 320 are respectively provided with an air intake hole 311 and a second connecting pipe.

[0045] Depending on different process requirements and equipment structure limitations, in other embodiments, the exhaust pipe 300 may also adopt other types of shape designs. For example, the exhaust pipe 300 may also be a round pipe or an elliptical pipe instead of a square pipe.

[0046] In summary, this application provides a coating device. By providing an exhaust pipe 300 around the device body 100 inside a cleanroom hood 200, and an air intake hole 311 on the side of the exhaust pipe 300 facing the fan, and by connecting the exhaust pipe 300 to an external negative pressure device, when the negative pressure device is running, the gas passing through the filter in the exhaust pipe 300 will be guided to the periphery of the device body 100 and flow downward. This airflow guidance method can effectively prevent the gas from directly impacting the coating area, reduce the impact of airflow disturbance on the stability of the liquid output of the cutting head, and reduce the possibility of external impurities entering the coating surface, thereby ensuring the film quality.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A coating apparatus characterized by comprising: The device includes a main body (100) and a clean hood (200). The clean hood (200) covers the main body (100). An exhaust pipe (300) is provided inside the clean hood (200) surrounding the main body (100). The exhaust pipe (300) has an air intake hole (311) on its side facing the top of the clean hood (200). The exhaust pipe (300) is used to communicate with an external negative pressure device.

2. The coating apparatus according to claim 1, characterized by The device body (100) is provided with a fixed frame (110) and a first connector (120) connected to the fixed frame (110). The cleanroom hood (200) includes an outer frame (210) and a second connector (220) connected to the outer frame (210). A buffer (400) is provided between the first connector (120) and the second connector (220). The exhaust pipe (300) is provided on the second connector (220).

3. The coating apparatus according to claim 2, characterized in that, The buffer (400) is a buffer pad, which is partially supported on the top surface of the first connector (120) and the second connector (220). The buffer pad is provided with two holding members (410), which are respectively connected to the first connector (120) and the second connector (220).

4. The coating equipment according to claim 3, characterized in that, The pressing member (410) is a flat steel strip. The two flat steel strips are respectively provided with a first fastener and a second fastener. The first fastener passes through the flat steel strip, the buffer pad and the first connector (120) at the same time. The second fastener passes through the flat steel strip, the buffer pad and the second connector (220) at the same time.

5. The coating equipment according to claim 3, characterized in that, The buffer pad is a silicone rubber buffer pad.

6. The coating apparatus according to claim 1, wherein The cleanroom hood (200) has a window on its side. The exhaust pipe (300) includes a first exhaust pipe (310) and a second exhaust pipe (320). The first exhaust pipe (310) is closer to the window than the second exhaust pipe (320). The negative pressure in the first exhaust pipe (310) is greater than the negative pressure in the second exhaust pipe (320).

7. The coating apparatus according to claim 6, characterized in that The second exhaust pipe (320) includes a first pipe section (321) and two second pipe sections (322) perpendicular to the first pipe section (321). The first exhaust pipe (310), the first pipe section (321) and the two second pipe sections (322) are arranged around the device body (100). The end of the second pipe section (322) away from the first pipe section (321) extends to the first exhaust pipe (310).

8. The coating equipment according to claim 6, characterized in that, The first exhaust pipe (310) and the second exhaust pipe (320) are respectively provided with a first connecting pipe (312) and a second connecting pipe. Both the first connecting pipe (312) and the second connecting pipe are provided with pressure regulating devices, and both the first connecting pipe (312) and the second connecting pipe are used to connect with external negative pressure equipment.

9. The coating apparatus according to claim 1, wherein The air intake holes (311) are provided at multiple even intervals along the extension direction of the exhaust pipe (300).

10. The coating apparatus according to claim 1, wherein The exhaust pipe (300) is a square tube.

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