Coating equipment

Abstract

The embodiment of the utility model discloses coating equipment. According to the specific implementation mode, the coating equipment comprises an equipment frame and a coating device, wherein the equipment frame comprises two supporting columns which are symmetrically arranged; the driving assembly comprises a driver, a driving roller and at least one driven roller, and the driver is connected with the driving roller and used for driving the film to move along the at least one driven roller; the two ends of the coating roller are fixed to the two supporting columns through bearing pedestals correspondingly, and the coating roller is located between the driving roller and the at least one driven roller, located above the thin film and connected with the upper surface of the thin film and used for coating the thin film passing through the coating roller with liquid paint in a rolling mode; and the liquid storage assembly comprises a liquid storage tank, an outlet of the liquid storage tank is connected with the coating roller, and the liquid storage tank is used for providing liquid paint for the coating roller. The embodiment provides a novel equipment structure for coating a material (such as a wear-resistant material) on the heat-conducting gasket, so that the uniformity of the thickness of the material and the smoothness of the surface can be ensured, and the process requirements are met.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of thermal pad production, and particularly to coating equipment. Background Art

[0002] There are two common methods for applying coatings to thermal pads: using a spatula and spraying. The first method involves applying liquid coating to the thermal pad first, then placing a soft rubber spatula over it. As the thermal pad moves, the spatula scrapes off excess coating, achieving the desired coating thickness. The second method involves spraying the liquid coating directly onto the thermal pad.

[0003] However, the inventors found that the surface uniformity of the coatings obtained by these two methods is not very good, and the spraying method is also prone to problems such as particles or bubbles on the surface, affecting the quality of the coating applied on the thermal pad.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure concept and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Utility Model Content

[0005] The content of this disclosure is intended to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this disclosure is not intended to identify key features or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions. Some embodiments of the present disclosure provide a coating device that can ensure uniformity in coating thickness, improve coating quality, and meet process requirements.

[0006] Some embodiments of the present disclosure provide a coating device, including: an equipment frame, including two symmetrically arranged support columns; a driving assembly, including a driver, a driving roller and at least one driven roller, the driver being connected to the driving roller and being used to drive a film to move along the at least one driven roller; a coating roller, both ends of which are fixed to the two support columns by bearing seats, the coating roller being located between the driving roller and the at least one driven roller, and above the film, in contact with the upper surface of the film, and being used to roll liquid coating onto the film passing through the coating roller; a liquid storage assembly, including a liquid storage tank, the outlet of the liquid storage tank being connected to the coating roller, and being used to provide liquid coating to the coating roller.

[0007] In some embodiments, the coating roller includes a metal tube, a sponge and a baffle; both ends of the metal tube are fixed to the bearing seat, the sponge is wrapped around the outer surface of the metal tube, and the baffle is sleeved on the metal tube and located at both ends of the sponge.

[0008] In some embodiments, the metal tube is a hollow tube with multiple holes on its outer surface; the liquid storage assembly also includes a pressure regulating valve, which is connected to the upper end of the liquid storage tank through an air path, and the lower end of the liquid storage tank is connected to both ends of the metal tube through a pipeline.

[0009] In some embodiments, the pressure regulating valve is fixed on the support column, the liquid storage tank is fixed on the support column through a connecting plate, the bearing seat is fixed on the connecting plate, and the connecting plate is provided with a through hole at the position corresponding to the bearing seat; the coating equipment includes two liquid storage components, and the two liquid storage components are respectively fixed on the two support columns and respectively connected to the two ends of the metal pipe.

[0010] In some embodiments, the connecting plate includes a first connecting plate and a second connecting plate, the liquid storage tank is fixed on the first connecting plate, and the coating roller is fixed on the second connecting plate; one end of the first connecting plate is fixed to the support column, and the other end is provided with a vertical groove extending in a direction perpendicular to the ground, and the second connecting plate is fixed to the first connecting plate through the vertical groove.

[0011] In some embodiments, the holes on the metal tube are arranged at equal intervals, and the metal tube has at least four rows of holes in the circumferential direction, with at least twenty holes in each row, wherein the diameter of the holes ranges from 0.1 mm to 2.2 mm.

[0012] In some embodiments, the liquid storage tank is located above the coating roller and is arranged along the length direction of the coating roller. A liquid outlet groove is opened at the lower end of the liquid storage tank, and the liquid outlet groove is connected to the upper surface of the coating roller, wherein the length of the liquid outlet groove matches the length of the sponge.

[0013] In some embodiments, the coating device further includes a laminating assembly disposed between the coating roller and the driving roller for laminating the film coated with liquid coating to the thermal pad, wherein the liquid coating is located between the film and the thermal pad.

[0014] In some embodiments, the coating device further includes an optical detection component disposed between the coating roller and the laminating component for detecting the thickness of the liquid coating rolled onto the film.

[0015] The above-described various embodiments of the present disclosure have the following beneficial effects: The coating equipment of some embodiments of the present disclosure can ensure uniform coating thickness, improve coating quality, and meet process requirements. Specifically, the coating equipment of the present disclosure includes a drive assembly, a coating roller, and a liquid storage assembly. The drive assembly can be used to drive the film to move. The coating roller can be located between the drive roller and the driven roller, above the film. The outlet of the liquid storage tank in the liquid storage assembly is connected to the coating roller to supply liquid coating to the coating roller. In this way, when the film moves to the coating roller under the action of the drive roller, the upper surface of the film comes into contact with the coating roller. Driven by the film, the coating roller rotates, thereby rolling the liquid coating onto the film, achieving liquid coating. Compared with traditional scraping or spraying methods, the roller coating method of the present disclosure not only ensures uniform coating thickness, but also avoids the generation of bubbles, thereby ensuring the smoothness of the coating surface. This can improve the coating quality and meet process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that components and elements are not necessarily drawn to scale.

[0017] Figure 1 is a schematic structural diagram of some embodiments of the coating equipment disclosed herein;

[0018] Figure 2 Schematic diagrams of some embodiments of thermally conductive gaskets with coatings produced using the coating equipment disclosed herein. DETAILED DESCRIPTION

[0019] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0020] It should also be noted that, for ease of description, only the parts related to the relevant utility model are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0021] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0022] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0023] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] Figure 1 FIG. 1 shows a schematic structural diagram of the coating device disclosed herein. The coating device may include a device frame 1, a drive assembly 2, a coating roller 3, and a liquid storage assembly 4. Figure 1 As shown, the device frame 1 forms the main support structure of the device and may include two symmetrically arranged support columns. The drive assembly 2 may include a driver (not shown), a drive roller (not shown), and at least one driven roller. Here, one end of the film may be fixed to the drive roller, and the other end may be fixed to one of the at least one driven roller. The driver may be connected to the drive roller, thereby driving the film to move along the at least one driven roller.

[0025] In addition, the coating roller 3 can be used to roll liquid coating onto the film passing through the coating roller. The two ends of the coating roller 3 can be fixed to the two support columns through the bearing seats z respectively. That is to say, the bearing seats z can be mounted on the two ends of the coating roller 3. At the same time, the bearing seats z can be fixed on the support columns. The coating roller 3 is located between the driving roller and at least one driven roller, and is located above the film and connected to the upper surface of the film. The liquid storage component 4 may include a liquid storage tank 41. The liquid storage tank 41 is used to store liquid coating. Here, the outlet of the liquid storage tank 41 can be connected to the coating roller 3 to provide liquid coating to the coating roller 3.

[0026] From the above description, it can be seen that the coating equipment of some embodiments of the present disclosure can ensure the uniformity of the coating thickness, improve the coating quality, and meet the process requirements. Specifically, when the film moves to the coating roller under the action of the driving roller, the upper surface of the film will contact the coating roller. Driven by the film, the coating roller rotates, so that the liquid coating can be rolled onto the film to achieve the coating of the liquid coating. Compared with traditional scraping or spraying methods, the roller coating method disclosed in the present disclosure can not only ensure the uniformity of the coating thickness, but also avoid the generation of bubbles, thereby ensuring the flatness of the coating surface. The coating quality of the coating can be improved to meet the process requirements.

[0027] It should be noted that the structure of the coating roller 3 and the liquid storage assembly 4 can be set according to actual needs. For example, in order to achieve the rolling coating of liquid paint, the coating roller can be made of a material with water absorption, such as sponge, felt, cloth, etc. In this way, the coating roller can be used to absorb the paint to achieve rolling coating, and the influence of paint dripping on the coating thickness quality can be avoided. In order to achieve the fixed support of the coating roller, the inside of the coating roller can be made of rubber, metal or hard plastic to form a round roller. At the same time, the outside of the round roller is wrapped with the above-mentioned water-absorbing material.

[0028] In some embodiments, the coating roller 3 can include a metal pipe 31, a sponge 32 and a stop piece. The two ends of the metal pipe 31 can be fixed with the bearing seat. The sponge 32 can be wrapped around the outer surface of the metal pipe 31. At the same time, the stop piece can be sleeved on the metal pipe 31 and located at the two ends of the sponge 32.

[0029] In this case, the liquid storage tank can be a long barrel shape. The liquid storage tank can be located above the coating roller and arranged along the length direction of the coating roller. In addition, the lower end of the liquid storage tank can be provided with a liquid outlet groove (i.e. opening), and the liquid outlet groove is connected with the upper surface of the coating roller. Here, the length of the liquid outlet groove can match the length of the sponge. That is, the lower end of the liquid storage tank can be provided with an elongated liquid outlet groove. In this way, the liquid paint can slowly flow out of the liquid outlet groove under the action of gravity. At the same time, as the coating roller rotates, the sponge on the surface of the coating roller can be evenly soaked with the flowing liquid paint, and then the liquid paint on the sponge can be rolled onto the film.

[0030] Further, as shown in Figure 1 The metal pipe 31 can be a hollow pipe with a plurality of holes on the outer surface. In this case, the lower end outlet of the liquid storage tank 41 can be connected with the two ends of the metal pipe 31 through a pipeline. In addition, the liquid storage assembly 4 can further include a pressure regulating valve 42. The pressure regulating valve 42 is connected with the upper end of the liquid storage tank 41 through an air path. The flow rate of the liquid paint in the liquid storage tank 41 can be adjusted through the pressure regulating valve 42. The liquid paint can be delivered to the inside of the coating roller through the two ends of the metal pipe 31. And through the plurality of holes on the metal pipe 31, the liquid paint can flow to the sponge 32 outside the coating roller.

[0031] Here, the pressure regulating valve 42 can be fixed on the support column. The liquid storage tank 41 can be fixed on the support column through a connecting plate. The bearing seat can be fixed on the connecting plate, and the connecting plate can be provided with a through hole at the position corresponding to the bearing seat. It can be understood that the coating device of the present disclosure can include two liquid storage assemblies. The two liquid storage assemblies can be respectively fixed on two support columns and connected with the two ends of the metal pipe 31. In this way, the uniformity of the liquid paint in the coating roller at the same level can be ensured, thereby ensuring the uniformity of the paint rolling thickness.

[0032] In some embodiments, to meet different production requirements, the connecting plate may include a first connecting plate and a second connecting plate. The liquid storage tank may be secured to the first connecting plate, and the coating roller may be secured to the second connecting plate. Furthermore, one end of the first connecting plate may be secured to a support column, while the other end may be provided with a vertical slot extending perpendicular to the ground. In this case, the second connecting plate may be secured to the first connecting plate via the vertical slot using bolts and nuts. This allows the height of the coating roller to be adjusted based on the actual film height and coating thickness during production.

[0033] It is understandable that the structural dimensions of the above-mentioned coating roller can also be set according to actual needs. As an example, the holes on the metal tube 31 can be arranged at equal intervals. Here, the metal tube 31 can be provided with at least four rows of holes in the circumferential direction, and each row can be provided with at least twenty holes. The diameter range of the holes can be between 0.1 mm and 2.2 mm. For example, the metal tube 31 can be a steel tube, the outer diameter of which can be 20 to 40 mm, and the inner diameter can be 10 to 20 mm. A row of holes can be punched on the metal tube 31 every 90 degrees, for a total of 4 rows of holes. A hole with a diameter of 2 mm can be punched every 20 mm in each row, for a total of 22 holes in a row. The above-mentioned sponge 32 can be made of PP (polypropylene) cotton, for example.

[0034] It should be noted that after the liquid coating is rolled onto the film, the film can be bonded to the thermal gasket, thereby transferring the coating to the thermal gasket, thereby achieving coating of the coating (such as wear-resistant coating) on ​​one side of the thermal gasket. Here, the coating equipment may also include a bonding component (not shown in the figure). The bonding component can be arranged between the coating roller and the driving roller, and is used to bond the film coated with the liquid coating to the thermal gasket. The liquid coating is located between the film and the thermal gasket. Afterwards, the liquid coating can be solidified by heating and drying. After the coating solidifies, the film on the bonded thermal gasket can be torn off, so that the coating (such as Figure 2 C1) shown in FIG remains on the thermal pad, thus completing the entire coating process. Figure 2 As shown, the other side of the thermal pad C2 can be affixed with a protective film C3. When in use, the protective film can be removed, allowing the thermal pad to be attached to a location where heat dissipation or heat exchange is required. The structure of the bonding assembly here is also not limited, and may include at least one pair of rollers arranged vertically and parallel to each other. The film coated with liquid coating and the thermal pad can be inserted between the two rollers from one side, and the two can be bonded under the squeezing action of the rollers. After bonding, they can be removed from the other side of the two rollers.

[0035] In some embodiments, the coating equipment may further include an optical detection component (not shown). The optical detection component may be arranged between the coating roller and the laminating component to detect the thickness of the liquid coating rolled on the film. The optical detection component here can use light to achieve non-contact thickness detection. It is understandable that the optical detection component here may include multiple detection positions. These detection positions are arranged parallel to the length direction of the coating roller, that is, arranged along the width direction of the film. In this way, based on the detection results of the optical detection component, the thickness of the coating rolled on can be understood in real time to achieve thickness detection. Then, based on the detection results, the production process parameters can be adjusted, such as the flow rate of the liquid coating, the rotation speed of the drive component (i.e., the moving speed of the film), the height of the coating roller, and the like.

[0036] The above descriptions are merely some preferred embodiments of the present disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed herein is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also encompass other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A coating device, characterized in that: include: An equipment frame, comprising two symmetrically arranged support columns; a driving assembly comprising a driver, a driving roller and at least one driven roller, wherein the driver is connected to the driving roller and is used to drive the film to move along the at least one driven roller; a coating roller, with both ends respectively fixed to the two support columns through bearing seats, the coating roller being located between the driving roller and the at least one driven roller, and above the film, in contact with the upper surface of the film, for rolling liquid coating onto the film passing through the coating roller; The liquid storage assembly comprises a liquid storage tank, an outlet of which is connected to the coating roller and is used to provide liquid coating to the coating roller.

2. The coating device according to claim 1, characterized in that The coating roller includes a metal tube, a sponge and a baffle; The two ends of the metal tube are fixed to the bearing seat, the sponge is wrapped around the outer surface of the metal tube, and the blocking piece is sleeved on the metal tube and located at the two ends of the sponge.

3. The coating device according to claim 2, characterized in that The metal tube is a hollow tube with a plurality of holes opened on the outer surface; The liquid storage assembly further includes a pressure regulating valve, which is connected to the upper end of the liquid storage tank via an air path, and the lower end of the liquid storage tank is connected to both ends of the metal pipe via a pipeline.

4. The coating device according to claim 3, characterized in that The pressure regulating valve is fixed on the support column, the liquid storage tank is fixed on the support column through a connecting plate, the bearing seat is fixed on the connecting plate, and the connecting plate is provided with a through hole at a position corresponding to the bearing seat; The coating equipment includes two liquid storage components, which are respectively fixed on the two support columns and respectively connected to the two ends of the metal pipe.

5. The coating device according to claim 4, characterized in that The connecting plate includes a first connecting plate and a second connecting plate, the liquid storage tank is fixed on the first connecting plate, and the coating roller is fixed on the second connecting plate; One end of the first connecting plate is fixed to the support column, and the other end is provided with a vertical groove extending in a direction perpendicular to the ground, and the second connecting plate is fixed to the first connecting plate through the vertical groove.

6. The coating equipment according to claim 3, characterized in that The holes on the metal tube are arranged at equal intervals. The metal tube is provided with at least four rows of holes in the circumferential direction, and each row is provided with at least twenty holes. The diameter of the holes ranges from 0.1 mm to 2.2 mm.

7. The coating equipment according to claim 2, characterized in that The liquid storage tank is located above the coating roller and is arranged along the length direction of the coating roller. A liquid outlet groove is opened at the lower end of the liquid storage tank, and the liquid outlet groove is connected to the upper surface of the coating roller. The length of the liquid outlet groove matches the length of the sponge.

8. The coating device according to any one of claims 1 to 7, characterized in that: The coating equipment further comprises a laminating assembly, which is arranged between the coating roller and the driving roller and is used to laminarize the film coated with liquid coating and the thermal pad, wherein the liquid coating is located between the film and the thermal pad.

9. The coating device according to claim 8, characterized in that The coating equipment further comprises an optical detection component, which is arranged between the coating roller and the laminating component and is used to detect the thickness of the liquid coating rolled onto the film.

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