Four-curved-surface coating jig

Abstract

The utility model discloses a four curved surface coating jig relates to coating processing technical field, including intermediate flat plate, upper surface, lower surface, coating face boss, non -coating face boss, counterbore, the intermediate flat plate is set up in rectangle, has opposite upper surface and lower surface, the coating face boss sets up in the upper surface of intermediate flat plate, is used for with the non -coating area of the product to be coated of contact to support product, the non -coating face boss sets up in the lower surface of intermediate flat plate, is used for with the contact of magnetron coating equipment's carrier plate. This four curved surface coating jig reduces the contact area of jig and product and carrier plate through the structure of boss, effectively reduced heat conduction, avoided the bruise, scratch and dirt of product surface, especially suitable for the coating processing of special-shaped PC, PMMA or glass four curved cover board, the jig material is light, and the air is little, and the surface is after polishing treatment, can improve product yield and production efficiency significantly.

Description

Technical Field

[0001] This utility model relates to the field of coating processing technology, and in particular to a four-curved surface coating fixture. Background Technology

[0002] With the development of industries such as new energy vehicles, the application of irregularly shaped PC, PMMA, or glass covers (especially tetrahedral structures) is becoming increasingly widespread. Existing optical coating processes are usually based on general product designs. For special tetrahedral irregularly shaped products, if they cannot be securely fixed to the workpiece holder, a special fixture device is required.

[0003] However, existing technologies have the following drawbacks: a large contact area between the product and the fixture, or an unreasonable design, can easily cause damage to the product surface such as pressure marks, scratches, pits, dirt, or even fragments; at the same time, large-area contact can lead to excessively rapid heat conduction, affecting the coating quality. Currently, there is a lack of a fixture device that can effectively perform coating on four-curved surfaces while precisely protecting non-coated areas and reducing product damage. Utility Model Content

[0004] This utility model proposes a four-curved surface coating fixture to solve the problems of scratches, pressure marks and heat conduction effects that are easily generated when coating irregular curved surface products in the prior art, while achieving effective protection of non-coated areas.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a four-curved surface coating fixture, comprising a middle plate, an upper surface, a lower surface, a coating surface boss, a non-coating surface boss, and a countersunk hole.

[0006] The intermediate plate is rectangular in shape and has opposing upper and lower surfaces;

[0007] The coating surface protrusion is disposed on the upper surface of the intermediate plate and is used to contact the non-coated area of ​​the product to be coated in order to support the product.

[0008] The non-coated surface boss is disposed on the lower surface of the intermediate plate and is used to contact the carrier plate of the magnetron coating equipment.

[0009] The intermediate plate, the coated surface boss, and the non-coated surface boss are provided with through countersunk holes. The intermediate plate is fixed to the carrier plate in the magnetron device by fasteners passing through the countersunk holes.

[0010] The coated and uncoated bosses are symmetrically distributed on the intermediate plate.

[0011] Furthermore, the number of the coated surface protrusions is four, symmetrically distributed in four areas on the upper surface of the middle plate. The coated surface protrusions are provided with product suction pads to provide cushioning and protection when supporting the product.

[0012] Furthermore, the number of non-coated surface protrusions is four, symmetrically distributed in four areas on the lower surface of the intermediate plate and corresponding to the coated surface protrusions.

[0013] Furthermore, the intermediate plate, the coated surface boss, and the non-coated surface boss are made of either aerospace aluminum or carbon fiber plate.

[0014] Furthermore, the length of the intermediate plate is 300mm-350mm, the width is 220mm-250mm, and the thickness is no more than 5mm.

[0015] Furthermore, the dimensions of the coated surface boss are 60mm×60mm×3mm.

[0016] Furthermore, the dimensions of the non-coated surface boss are 30mm × 30mm × 2mm.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows: the four-curved surface coating fixture reduces the contact area between the fixture and the product and the carrier plate through the boss structure, effectively reducing heat conduction and avoiding pressure marks, scratches and dirt on the product surface. It is particularly suitable for coating processing of irregularly shaped PC, PMMA or glass four-sided curved cover plates; the fixture is lightweight and has less gas release, and the surface is polished, which can significantly improve product yield and production efficiency. Attached Figure Description

[0018] Figure 1 This is a top view of the structure of this utility model;

[0019] Figure 2 This is a side view of the present invention.

[0020] In the diagram: 1. Middle plate, 11. Upper surface, 12. Lower surface, 2. Coated surface boss, 3. Non-coated surface boss, 4. Countersunk hole. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figure 1-2As shown, this utility model provides a four-curved surface coating fixture, including a middle plate 1, an upper surface 11, a lower surface 12, a coating surface boss 2, a non-coating surface boss 3, and a countersunk hole 4.

[0024] The intermediate plate 1 is rectangular in shape and has an upper surface 11 and a lower surface 12. The length of the intermediate plate 1 is 300mm-350mm, the width is 220mm-250mm, and the thickness is no more than 5mm.

[0025] The coating surface boss 2 is provided on the upper surface 11 of the intermediate plate 1 and is used to contact the non-coated area of ​​the product to be coated to support the product. The dimensions of the coating surface boss 2 are 60mm×60mm×3mm. There are four coating surface bosses 2, which are symmetrically distributed in four areas on the upper surface of the intermediate plate 1. The coating surface boss 2 is provided with a product suction pad to provide cushioning and protection when supporting the product and to support the four-curved cover product. This boss design ensures that the fixture and the product only contact in the designated area, avoiding pressure and scratches on the non-coated area and reducing heat conduction.

[0026] Non-coating surface boss 3 is disposed on the lower surface 12 of the intermediate plate 1 for contacting the carrier plate of the magnetron coating equipment; the dimensions of the non-coating surface boss 3 are 30mm×30mm×2mm; there are four non-coating surface bosses 3, symmetrically distributed in four areas on the lower surface of the intermediate plate 1 and corresponding to the coating surface boss 2; the boss is used to contact the carrier plate of the magnetron equipment, and by reducing the contact area with the carrier plate, it further blocks the excessive heat conduction and ensures the stability of the coating process;

[0027] The intermediate plate 1, the coated surface boss 2, and the non-coated surface boss 3 are provided with through countersunk holes 4. The intermediate plate 1 is fixed to the carrier plate in the magnetron control equipment by fasteners passing through the countersunk holes 4. The fixture assembly is firmly connected and locked to the coated carrier plate of the magnetron control equipment by countersunk screws passing through the countersunk holes, ensuring that the fixture does not loosen or fall off during the processing.

[0028] The coated surface bosses 2 and the non-coated surface bosses 3 are symmetrically distributed on the intermediate plate 1. The intermediate plate 1, the coated surface bosses 2, and the non-coated surface bosses 3 are made of either aerospace aluminum or carbon fiber plate, utilizing their lightweight properties and low outgassing under vacuum conditions to ensure the cleanliness of the coating environment. At the same time, the surface of the fixture is fully polished to prevent scratches or dirt caused by burrs or rough surfaces to the product.

[0029] In use, this invention achieves stable support and high-quality coating for irregularly shaped four-curved surface products through the following steps:

[0030] First, the fixture is installed and secured. The operator places the intermediate plate 1 on the carrier plate of the magnetron coating equipment. At this time, the non-coating surface protrusions 3 on the lower surface of the intermediate plate 1 are in direct contact with the carrier plate. Because the non-coating surface protrusions 3 are symmetrically distributed and have a small area, the main body of the intermediate plate 1 is suspended above the carrier plate. This "point contact" rather than "surface contact" method physically constructs an air insulation layer, effectively preventing the high temperature heat from the carrier plate from being directly conducted to the fixture body, thereby protecting the heat-sensitive products above. Subsequently, countersunk screws are used to pass through the countersunk holes 4 to firmly lock the fixture onto the carrier plate. The countersunk design ensures that the screw heads do not protrude, avoiding interference.

[0031] Next, the product is loaded. The four-sided curved cover plate to be coated is placed on the upper surface of the middle plate 1. At this time, the non-coated area of ​​the product precisely falls on the four symmetrically distributed coating surface protrusions 2. The product suction pads set on the coating surface protrusions 2 are preferably made of high-temperature resistant silicone material, with fine exhaust textures engraved on the surface. They are in direct contact with the product and play a dual role: on the one hand, they absorb the impact force when the product is placed using their elastic deformation, preventing hard pressure or scratches on the product surface; on the other hand, when the vacuum coating environment is evacuated, the textured structure on the surface of the pad can quickly expel the air from the contact surface, preventing the formation of air pockets that cause leakage. When the vacuum is broken and the part is removed, air can be quickly introduced, preventing the product from being difficult to remove due to vacuum adsorption or being damaged by force.

[0032] Finally, the coating process is carried out. During the magnetron sputtering process, the coating surface boss 2 elevates the product body, making the product suspended in the air. This not only facilitates the uniform coverage of the curved edges of the product by the film layer, but also further reduces the heat conduction path. The intermediate plate 1, the coating surface boss 2, and the non-coating surface boss 3 are all made of aerospace aluminum or carbon fiber. Utilizing their characteristics of light weight, low specific heat capacity, and minimal outgassing in a vacuum environment, the cleanliness of the coating chamber is ensured, ultimately significantly improving the product yield.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A four-curved surface coating fixture, comprising a middle plate (1), an upper surface (11), a lower surface (12), a coating surface boss (2), a non-coating surface boss (3), and a countersunk hole (4), characterized in that: The intermediate plate (1) is rectangular and has an upper surface (11) and a lower surface (12) opposite each other. The coating surface boss (2) is disposed on the upper surface (11) of the intermediate plate (1) and is used to contact the non-coated area of ​​the product to be coated to support the product. The non-coated surface boss (3) is disposed on the lower surface (12) of the intermediate plate (1) for contacting the carrier plate of the magnetron coating equipment. The intermediate plate (1), the coated surface boss (2) and the non-coated surface boss (3) are provided with through countersunk holes (4). The intermediate plate (1) is fixed to the carrier plate in the magnetic control device by fasteners passing through the countersunk holes (4). The coated surface bosses (2) and the non-coated surface bosses (3) are symmetrically distributed on the intermediate plate (1).

2. The four-curved surface coating fixture according to claim 1, characterized in that: The number of the coated surface protrusions (2) is four, symmetrically distributed in four areas on the upper surface of the middle plate (1). The coated surface protrusions (2) are provided with product suction pads to provide cushioning and protection when supporting the product.

3. The four-curved surface coating fixture according to claim 1, characterized in that: The number of the non-coated surface protrusions (3) is four, which are symmetrically distributed in four areas on the lower surface of the intermediate plate (1) and their positions correspond to the coated surface protrusions (2).

4. The four-curved surface coating fixture according to claim 1, characterized in that: The intermediate plate (1), the coated surface boss (2), and the non-coated surface boss (3) are made of either aviation aluminum or carbon fiber plate.

5. A four-curved surface coating fixture according to claim 1, characterized in that: The intermediate plate (1) has a length of 300mm-350mm, a width of 220mm-250mm, and a thickness of no more than 5mm.

6. The four-curved surface coating fixture according to claim 1, characterized in that: The dimensions of the coating surface boss (2) are 60mm×60mm×3mm.

7. A four-curved surface coating fixture according to claim 1, characterized in that: The dimensions of the non-coated surface boss (3) are 30mm×30mm×2mm.

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