PVD fading coating method, mechanism and application

Abstract

The invention provides a PVD fading coating method, a PVD fading coating mechanism and application, and belongs to the field of electroplating film formation. A base material is arranged in a shielding tool with a reducing shielding fence, so that the space between a base material fading coating area and the reducing shielding fence is smaller and smaller, and when electroplating is carried out in an electroplating furnace, the space between the base material fading coating area and the reducing shielding fence is smaller and smaller; a matching angle of about 30 degrees (the matching angle can be adjusted according to the required fading length) is formed when molecules fall; the matching angle enables molecules to uniformly fall inwards and gradually reduce, so that the purpose of fading gradually is achieved.

Description

Technical Field

[0001] The present invention relates to the field of electroplating film formation, and in particular to a PVD gradual evanescent film plating method, mechanism and application. Background Art

[0002] Physical Vapor Deposition (PVD) technology refers to the technology of using physical methods under vacuum conditions to vaporize the surface of a material source (solid or liquid) into gaseous atoms or molecules, or partially ionize it into ions, and deposit a thin film with certain special functions on the surface of the substrate through a low-pressure gas (or plasma) process. Physical vapor deposition is one of the main surface treatment technologies.

[0003] For some specific products, there are specific requirements for the transparency of the film. For example, the body of an electric toothbrush has a screen near the top of the body and a warning light group at the bottom; therefore, the PVD of the electric toothbrush housing needs to be electroplated from top to bottom to achieve a gradual disappearing electroplating film from obscured to transparent. The electroplating method in the existing technology is uniform film formation, and no technology that can meet this requirement has been found.

[0004] Therefore, the present invention urgently needs to propose an electroplating technology that can gradually form a film.

[0005] It should be noted that the information disclosed in the background technology section of the invention is only intended to deepen the understanding of the general background technology of the invention, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0006] In view of the above, one object of the present invention is to provide a method for electroplating by gradually forming a film; The second object of the present invention is to provide a gradually disappearing film electroplating mechanism; The third object of the present invention is to apply a gradually disappearing film electroplating mechanism to the field of electric toothbrush coating; Based on one of its purposes, the present invention provides a PVD gradual coating method, characterized in that it includes: Setting an evanescent coating region of a substrate; A shielding tool is provided, wherein the shielding tool has a reduced diameter shielding enclosure; Positioning the gradually disappearing coating area of ​​the substrate in the diameter-reducing shielding enclosure, wherein the gradually disappearing direction of the substrate coating is the same as the diameter-reducing direction of the diameter-reducing shielding enclosure; The substrate equipped with the shielding tool is fixed to the bracket of the PVD electroplating furnace, and forms a certain matching angle with the target sputtering path for PVD coating.

[0007] Preferably, the shielding tool includes a cone, a positioning part and an assembly part; the two ends of the cone have a first opening with a larger diameter and a second opening with a smaller diameter, the positioning part is installed at the second opening by the assembly part, and the substrate is positioned on the positioning part; the reduced diameter shielding enclosure is defined as the barrel of the cone.

[0008] Preferably, the assembly comprises a clamping body and a positioning groove, the positioning groove is formed in the clamping body, the positioning piece is arranged on the substrate and is inserted into the positioning groove, and the substrate is clamped in the clamping body.

[0009] Preferably, the substrate is implemented as a cylindrical structure, one end of the substrate is positioned and installed on the assembly part, and the other end is fixed to the bracket.

[0010] The beneficial effects of the above technical solution can come from one or a combination of the following: The substrate is placed in a shielding tooling with a diameter-reducing shielding enclosure, so that the space between the substrate gradually disappearing coating area and the diameter-reducing shielding enclosure becomes smaller and smaller. When electroplating is carried out in the electroplating furnace, a matching angle of about 30 degrees is formed when the molecules fall (this matching angle can be adjusted according to the required disappearing length); this matching angle allows the molecules to float inward evenly and gradually decrease, thereby achieving the purpose of disappearing.

[0011] The substrate can be clamped and positioned by means of positioning parts and assembly parts, making it easy to fix the position and disassemble.

[0012] When the substrate is the shell of a product, it can be coated to cover the defects and structural blocks where the built-in parts are concentrated, and improve the light transmission ability in the places where the built-in parts are not concentrated (such as the light display inside the shell). At the same time, it ensures that the light at the bottom of the built-in parts can be transmitted, and the coating process effect at the bottom of the built-in parts can be transmitted, so as to achieve a double-layer interlacing effect.

[0013] Based on the second purpose, the present invention provides a PVD gradual coating mechanism, characterized by comprising: Electroplating furnace; A shielding tool, wherein the shielding tool has a reduced diameter shielding enclosure; A substrate, wherein the substrate is set with a gradually disappearing coating area, the substrate is fixed to the shielding tool, the gradually disappearing coating area is located in the diameter-reducing shielding enclosure, and the gradually disappearing direction of the substrate coating is in the same direction as the diameter-reducing direction of the diameter-reducing shielding enclosure; the substrate equipped with the shielding tool is fixed to the bracket of the PVD electroplating furnace and forms a certain PVD coating angle with the target sputtering path.

[0014] Preferably, the shielding tool includes a cone, a positioning part and an assembly part; the two ends of the cone have a first opening with a larger diameter and a second opening with a smaller diameter, the positioning part is installed at the second opening by the assembly part, and the substrate is positioned on the positioning part; the reduced diameter shielding enclosure is defined as the barrel of the cone.

[0015] Preferably, the assembly comprises a clamping body and a positioning groove, the positioning groove is formed in the clamping body, the positioning piece is arranged on the substrate and is inserted into the positioning groove, and the substrate is clamped in the clamping body.

[0016] Preferably, the substrate is implemented as a cylindrical structure, one end of the substrate is positioned and installed on the assembly part, and the other end is fixed to the bracket.

[0017] The beneficial effects of the above technical solution can come from one or a combination of the following: The substrate is placed in a shielding tooling with a diameter-reducing shielding enclosure, so that the space between the substrate gradually disappearing coating area and the diameter-reducing shielding enclosure becomes smaller and smaller. When electroplating is carried out in the electroplating furnace, a matching angle of about 30 degrees is formed when the molecules fall (this matching angle can be adjusted according to the required disappearing length); this matching angle allows the molecules to float inward evenly and gradually decrease, thereby achieving the purpose of disappearing.

[0018] The substrate can be clamped and positioned by means of positioning parts and assembly parts, making it easy to fix the position and disassemble.

[0019] Based on the third purpose, the present invention provides an application of a PVD gradual coating mechanism in the coating of an electric toothbrush housing, characterized in that the substrate is implemented as an electric toothbrush housing.

[0020] Preferably, the electric toothbrush housing has a screen display area and a light display area; the screen display area is located at the beginning section of the gradually evanescent coating area along the gradually evanescent direction, and the light display area is located at the end section of the gradually evanescent coating area along the gradually evanescent direction.

[0021] The beneficial effects of the above technical solution can come from one or a combination of the following: It can cover the defects and structural blocks of the built-in parts of the electric toothbrush housing.

[0022] At the same time, it ensures that the light at the bottom of the built-in parts of the electric toothbrush housing can be seen through, and the craft effect at the bottom of the built-in parts can be seen through, so as to achieve a double-layer interlaced effect.

[0023] The screen on the top of the electric toothbrush casing can be hidden when not in use.

[0024] When the electric toothbrush is in use, the upper part of the housing hides a screen and the lower part hides a light; when not in use, the housing is in an integrated state, and the screen, the black-rimmed fixture next to the electric toothbrush, and the holes in the built-in parts cannot be seen. When in use, the outer shell of the electric toothbrush can see the UI interface of the screen, and the light in the lower part lights up. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of the shielding tooling in the present invention is expressed.

[0026] Figure 2 The schematic diagram of assembling the substrate and the shielding tooling in the present invention is expressed.

[0027] Figure 3 Expressed Figure 2 Axial cross-sectional view.

[0028] Figure 4 Expressed Figure 2 Exploded diagram of the structure.

[0029] Figure 5 The working state diagram of the PVD gradual coating mechanism in the present invention is expressed.

[0030] Among them: 1. Shielding tool; 11. Cone; 110. Reduced diameter shielding enclosure; 111. First opening; 112. Second opening; 12. Positioning piece; 13. Assembly piece; 131. Clamping body; 132. Positioning groove; 2. Substrate; 20. Gradient coating area; 21. Screen display area; 22. Light display area; 3. Electroplating furnace; 31. Bracket; 32. Whole furnace hanging rod; 33. Target material. DETAILED DESCRIPTION

[0031] The preferred embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0032] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0033] Method Example: Please combine Figure 1~Figure 5 This embodiment discloses a PVD gradual coating method, which includes the following steps: S1: setting an evanescent coating region 20 of a substrate 2.

[0034] In this embodiment, the substrate 2 is implemented as a cylindrical housing, which is used for the body shell of a small household appliance, such as an electric toothbrush. Here, the "gradually evanescent coating area 20" is defined as the film thickness of the area from thick to thin, and the transparency from weak to strong. For example, the outer peripheral area from the top to the bottom of the cylindrical housing of an electric toothbrush is defined as the "gradually evanescent coating area 20".

[0035] S2: Configure a shielding tool 1, which has a reduced diameter shielding enclosure 110.

[0036] Specifically, the shielding tool 1 includes a cone 11, a positioning member 12 and an assembly member 13. Further, the cone 11 has a first opening 111 with a larger diameter and a second opening 112 with a smaller diameter at both ends, the positioning member 12 is installed in the second opening 112 by the assembly member 13, and the substrate 2 is positioned on the positioning member 12. The reduced diameter shielding enclosure 110 is defined as the barrel of the cone 11.

[0037] It should be noted that the “reducing diameter” described in this embodiment is interpreted as the diameter or outer size of the reduced diameter shielding enclosure 110 gradually decreasing, so that the space between the reduced diameter shielding enclosure 110 and the gradually-evanescent coating area 20 gradually decreases.

[0038] The cone 11 can be implemented as an umbrella-shaped cone 11 or a polygonal cone 11. The purpose is to meet the technical purpose of gradually reducing the space between the reduced diameter shielding enclosure 110 and the gradually disappearing coating area 20. The present embodiment is preferably an umbrella-shaped cone 11. Please refer to Figure 5 In the cone tube 11 of the umbrella-shaped structure, the angle α between the reduced diameter shielding enclosure 110 and the central axis should be less than 90° in actual implementation to achieve a conical structure. Preferably, the angle α is implemented as 30° as the best, but the angle can be adjusted according to the required fading length.

[0039] Furthermore, the assembly part 13 includes a clamping body 131 and a positioning groove 132, the positioning groove 132 is formed in the clamping body 131, the positioning member 12 is provided on the substrate 2 and is inserted in the positioning groove 132, and the substrate 2 is clamped in the clamping body 131. Preferably, the positioning member 12 is a positioning column, one end of which is fixed to the substrate 2 by pasting or other detachable methods. The clamping body 131 is a clamp structure, which is used to clamp and fix the substrate 2, and the positioning column is inserted in the positioning groove 132 for position positioning. The clamping body 131 of the assembly part 13 is fixed by friction through threaded assembly with the second opening 112, or directly squeezed by the second opening 112 through the clamping body 131. Specifically, when the substrate 2 is inserted into the clamping body 131, it has an outward expansion tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112, and achieving friction fixation.

[0040] As described above, taking the housing of an electric toothbrush as an example of a coating object, the substrate 2 is implemented as a cylindrical structure, one end of the substrate 2 is positioned and installed on the assembly part 13, and the other end is fixed to the bracket 31 of the electroplating furnace 3.

[0041] This embodiment does not impose any specific restrictions on the PVD electroplating furnace 3, and its structure is the existing technology, and its coating principle will not be described in detail.

[0042] S3: Position the gradually disappearing coating area 20 of the substrate 2 in the diameter-reducing shielding enclosure 110 , and the gradually disappearing coating direction of the substrate 2 is the same as the diameter-reducing shielding enclosure 110 .

[0043] As described above, one end of the positioning column is glued or fixed to the substrate 2 in other detachable ways, and then the substrate 2 is inserted into the second opening 112 in the shielding tool 1 and installed on the assembly part 13 of the shielding tool 1. Specifically, the substrate 2 is inserted into the clamping body 131 of the assembly part 13, which exerts an outward tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112, and achieving friction fixation. At this point, the entire substrate 2 shielding method is assembled.

[0044] S4: Fix the substrate 2 equipped with the shielding tooling 1 to the bracket 31 of the PVD electroplating furnace 3, and form a certain matching angle with the sputtering / evaporation path of the target material 33 for PVD coating.

[0045] There is no restriction on the matching angle here. It is only necessary to open the reduced diameter shielding enclosure 110 of the shielding tool 1 to face the sputtering or evaporation direction of the target film-forming particles during a certain period of coating. Due to the specific structure of the shielding tool 1, the space between the reduced diameter shielding enclosure 110 and the gradually disappearing coating area 20 is gradually reduced; thereby, the deposition space of the film-forming particles of the target material 33 is reduced, and the effect of gradually disappearing coating can be achieved. Specifically, the substrate 2 is placed in the shielding tool with the reduced diameter shielding enclosure 110, so that the space between the gradually disappearing coating area of ​​the substrate 2 and the reduced diameter shielding enclosure 110 is reduced. When electroplating is performed in the electroplating furnace 3, a matching angle α of about 30 degrees is formed with the molecular sputtering or evaporation direction (this matching angle can be adjusted according to the required disappearing length, and is not a sole restriction); this matching angle allows the molecules to evenly float inward and gradually decrease, thereby achieving the purpose of disappearing.

[0046] See also Figure 5The electroplating furnace 3 is provided with a single hanging rod (bracket) for hanging the substrate 2 and a whole furnace hanging rod 32 for hanging the target material 33. The rotation of the single hanging rod is set to 20s / circle and the revolution of the whole furnace hanging rod 32 is set to 60s / circle, so that the substrate 2 with the shielding tooling 1 rotates counterclockwise while revolving around the whole furnace hanging rod 32. With the cooperation of the umbrella-shaped shielding tooling 1, an angle α of about 30 degrees is formed with the molecular sputtering or evaporation direction (this angle can be adjusted according to the required fading length. The longer the length, the larger the angle α is set relatively, so that the innermost part of the reducing shielding enclosure 11 can have enough deposition space); this angle allows the molecules to float inward evenly and gradually decrease, thereby achieving the purpose of fading.

[0047] Beneficial effects of this embodiment: The substrate is placed in a shielding tooling with a diameter-reducing shielding enclosure, so that the space between the substrate gradually disappearing coating area and the diameter-reducing shielding enclosure becomes smaller and smaller. When electroplating is carried out in the electroplating furnace, a matching angle of about 30 degrees is formed when the molecules fall (this matching angle can be adjusted according to the required disappearing length); this matching angle allows the molecules to float inward evenly and gradually decrease, thereby achieving the purpose of disappearing.

[0048] The substrate can be clamped and positioned by means of positioning parts and assembly parts, making it easy to fix the position and disassemble.

[0049] When the substrate is the shell of a product, it can be coated to cover the defects and structural blocks where the built-in parts are concentrated, and improve the light transmission ability in the places where the built-in parts are not concentrated (such as the light display inside the shell). At the same time, it ensures that the light at the bottom of the built-in parts can be transmitted, and the coating process effect at the bottom of the built-in parts can be transmitted, so as to achieve a double-layer interlacing effect.

[0050] Structural embodiment: Please combine Figure 1~Figure 5 The present invention provides a PVD gradual coating mechanism, including an electroplating furnace 3, a shielding tool 1 and a substrate 2. Specifically, the shielding tool 1 has a diameter-reducing shielding enclosure 110; the substrate 2 is set with a gradual coating area 20, the substrate 2 is fixed to the shielding tool 1, the gradual coating area 20 is located in the diameter-reducing shielding enclosure 110, and the gradual coating direction of the substrate 2 is the same as the diameter-reducing direction of the diameter-reducing shielding enclosure 110; the substrate 2 equipped with the shielding tool 1 is fixed to the bracket 31 of the PVD electroplating furnace 3, and forms a certain PVD coating angle with the sputtering path of the target material 33.

[0051] In this embodiment, the substrate 2 is implemented as a cylindrical housing, which is used for the body shell of a small household appliance, such as an electric toothbrush. Here, the "gradually evanescent coating area 20" is defined as the film thickness of the area from thick to thin, and the transparency from weak to strong. For example, the outer peripheral area from the top to the bottom of the cylindrical housing of an electric toothbrush is defined as the "gradually evanescent coating area 20".

[0052] Specifically, the shielding tool 1 includes a cone 11, a positioning member 12 and an assembly member 13. Further, the cone 11 has a first opening 111 with a larger diameter and a second opening 112 with a smaller diameter at both ends, the positioning member 12 is installed in the second opening 112 by the assembly member 13, and the substrate 2 is positioned on the positioning member 12. The reduced diameter shielding enclosure 110 is defined as the barrel of the cone 11.

[0053] It should be noted that the “reducing diameter” described in this embodiment is interpreted as the diameter or outer size of the reduced diameter shielding enclosure 110 gradually decreasing, so that the space between the reduced diameter shielding enclosure 110 and the gradually-evanescent coating area 20 gradually decreases.

[0054] The cone 11 can be implemented as an umbrella-shaped cone or a polygonal cone. The purpose is to meet the technical purpose of gradually reducing the space between the reduced diameter shielding enclosure 110 and the gradually disappearing coating area 20. The present embodiment is preferably an umbrella-shaped cone. Please refer to Figure 5 In the cone tube 11 of the umbrella-shaped structure, the angle α between the reduced diameter shielding enclosure 110 and the central axis should be less than 90° in actual implementation to achieve a conical structure. Preferably, the angle α is implemented as 30° as the best, but the angle can be adjusted according to the required fading length.

[0055] Furthermore, the assembly part 13 includes a clamping body 131 and a positioning groove 132, the positioning groove 132 is formed in the clamping body 131, the positioning member 12 is provided on the substrate 2 and is inserted in the positioning groove 132, and the substrate 2 is clamped in the clamping body 131. Preferably, the positioning member 12 is a positioning column, one end of which is fixed to the substrate 2 by pasting or other detachable methods. The clamping body 131 is a clamp structure, which is used to clamp and fix the substrate 2, and the positioning column is inserted in the positioning groove 132 for position positioning. The clamping body 131 of the assembly part 13 is fixed by friction through threaded assembly with the second opening 112, or directly squeezed by the second opening 112 through the clamping body 131. Specifically, when the substrate 2 is inserted into the clamping body 131, it has an outward expansion tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112, and achieving friction fixation.

[0056] As described above, taking the housing of an electric toothbrush as an example of a coating object, the substrate 2 is implemented as a cylindrical structure, one end of the substrate 2 is positioned and installed on the assembly part 13, and the other end is fixed to the bracket 31 of the electroplating furnace 3.

[0057] This embodiment does not impose any specific restrictions on the PVD electroplating furnace 3, and its structure is the existing technology, and its coating principle will not be described in detail.

[0058] As described above, one end of the positioning column is glued or fixed to the substrate 2 in other detachable ways, and then the substrate 2 is inserted into the second opening 112 in the shielding tool 1 and installed on the assembly part 13 of the shielding tool 1. Specifically, the substrate 2 is inserted into the clamping body 131 of the assembly part 13, which exerts an outward tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112, and achieving friction fixation. At this point, the entire substrate 2 shielding method is assembled.

[0059] In this embodiment, there is no restriction on the matching angle α. It is only necessary to open the reduced diameter shielding enclosure 110 of the shielding tool 1 to face the sputtering or evaporation direction of the target film-forming particles during a certain period of coating. Due to the specific structure of the shielding tool 1, the space between the reduced diameter shielding enclosure 110 and the gradually disappearing coating area 20 is gradually reduced; thereby, the deposition space of the film-forming particles of the target material 33 is reduced, and the effect of gradually disappearing coating can be achieved. Specifically, the substrate 2 is placed in the shielding tool with the reduced diameter shielding enclosure 110, so that the space between the gradually disappearing coating area of ​​the substrate 2 and the reduced diameter shielding enclosure 110 is reduced. When electroplating is performed in the electroplating furnace 3, a matching angle α of about 30 degrees is formed with the molecular sputtering or evaporation direction (here, the explanation is based on the molecular sputtering or evaporation direction entering the reduced diameter shielding enclosure 110 as a roughly horizontal direction); this matching angle allows the molecules to evenly float inward and gradually decrease, thereby achieving the purpose of gradually disappearing.

[0060] See also Figure 5 The electroplating furnace 3 is provided with a single hanging rod (bracket) for hanging the substrate 2 and a whole furnace hanging rod 32 for hanging the target material 33. The rotation of the single hanging rod is set to 20s / circle and the revolution of the whole furnace hanging rod 32 is set to 60s / circle, so that the substrate 2 with the shielding tooling 1 rotates counterclockwise while revolving around the whole furnace hanging rod 32. With the cooperation of the umbrella-shaped shielding tooling 1, an angle α of about 30 degrees is formed with the molecular sputtering or evaporation direction (this angle can be adjusted according to the required fading length); this angle allows the molecules to float inward evenly and gradually decrease, thereby achieving the purpose of fading.

[0061] Beneficial effects of this embodiment: The substrate is placed in a shielding tooling with a diameter-reducing shielding enclosure, so that the space between the substrate gradually disappearing coating area and the diameter-reducing shielding enclosure becomes smaller and smaller. When electroplating is carried out in the electroplating furnace, a matching angle of about 30 degrees is formed when the molecules fall (this matching angle can be adjusted according to the required disappearing length); this matching angle allows the molecules to float inward evenly and gradually decrease, thereby achieving the purpose of disappearing.

[0062] The substrate can be clamped and positioned by means of positioning parts and assembly parts, making it easy to fix the position and disassemble.

[0063] Application examples: The present invention provides an application of a PVD evanescent coating mechanism in coating of an electric toothbrush housing, wherein the substrate 2 is implemented as an electric toothbrush housing.

[0064] Specifically, the housing of the electric toothbrush has a screen display area 21 and a light display area 22. The screen display area 21 is located at the first section of the gradually evanescent coating area 20 along the gradually evanescent direction or the uniformly coated area outside the gradually evanescent coating area 20, that is, the area that the reduced diameter shielding enclosure 110 cannot shield, and the light display area 22 is located at the tail section of the gradually evanescent coating area 20 along the gradually evanescent direction.

[0065] The PVD gradually exfoliating coating mechanism comprises an electroplating furnace 3, a shielding tool 1 and a substrate 2. Specifically, the shielding tool 1 has a diameter-reducing shielding enclosure 110; the substrate 2 is set with a gradually exfoliating coating area 20, the substrate 2 is fixed to the shielding tool 1, the gradually exfoliating coating area 20 is located in the diameter-reducing shielding enclosure 110, and the gradually exfoliating direction of the coating of the substrate 2 is the same as the diameter-reducing direction of the diameter-reducing shielding enclosure 110; the substrate 2 equipped with the shielding tool 1 is fixed to the bracket 31 of the PVD electroplating furnace 3, and forms a certain PVD coating angle with the sputtering path of the target material 33.

[0066] In this embodiment, the substrate 2 is implemented as an electric toothbrush housing, preferably a cylindrical housing. Here, the "gradually evanescent coating area 20" is defined as the film thickness of the cylindrical housing from thick to thin, and the transparency from weak to strong.

[0067] Specifically, the shielding tool 1 includes a cone 11, a positioning member 12 and an assembly member 13. Further, the cone 11 has a first opening 111 with a larger diameter and a second opening 112 with a smaller diameter at both ends, the positioning member 12 is installed in the second opening 112 by the assembly member 13, and the cylindrical housing is positioned on the positioning member 12. The reduced diameter shielding enclosure 110 is defined as the barrel of the cone 11.

[0068] It should be noted that the “reducing diameter” described in this embodiment is interpreted as the diameter or outer size of the reduced diameter shielding enclosure 110 gradually decreasing, so that the space between the reduced diameter shielding enclosure 110 and the gradually-evanescent coating area 20 gradually decreases.

[0069] The cone 11 can be implemented as an umbrella-shaped cone or a polygonal cone, in order to meet the technical purpose of gradually reducing the space between the reduced diameter shielding enclosure 110 and the gradually disappearing coating area 20. The present embodiment is preferably an umbrella-shaped cone.

[0070] Further, the assembly part 13 includes a clamping body 131 and a positioning groove 132, the positioning groove 132 is formed in the clamping body 131, the positioning member 12 is arranged on the cylindrical casing and is inserted in the positioning groove 132, and the substrate 2 is clamped in the clamping body 131. Preferably, the positioning member 12 is a positioning column, one end of which is fixed to the cylindrical casing by pasting or other detachable methods. The clamping body 131 is a clamp structure, which is used to clamp and fix the cylindrical casing, and the positioning column is inserted in the positioning groove 132 for position positioning. The clamping body 131 of the assembly part 13 is fixed by friction through threaded assembly with the second opening 112, or directly through the clamping body 131 being squeezed by the second opening 112 to form a friction fixation. Specifically, when the cylindrical casing is stuck in the clamping body 131, it has an outward expansion tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112, and achieving friction fixation.

[0071] As described above, taking the housing of an electric toothbrush as an example of a coating object, the cylindrical housing is implemented as a cylindrical structure, one end of which is positioned and installed on the assembly part 13 , and the other end is fixed to the bracket 31 of the electroplating furnace 3 .

[0072] This embodiment does not impose any specific restrictions on the PVD electroplating furnace 3, and its structure is the existing technology, and its coating principle will not be described in detail.

[0073] Beneficial effects of this embodiment: It can cover the defects and structural blocks of the built-in parts of the electric toothbrush housing.

[0074] At the same time, it ensures that the light at the bottom of the built-in parts of the electric toothbrush housing can be seen through, and the craft effect at the bottom of the built-in parts can be seen through, so as to achieve a double-layer interlaced effect.

[0075] The screen on the top of the electric toothbrush casing can be hidden when not in use.

[0076] When the electric toothbrush is in use, the upper part of the housing hides a screen and the lower part hides a light; when not in use, the housing is in an integrated state, and the screen, the black-rimmed fixture next to the electric toothbrush, and the holes in the built-in parts cannot be seen. When in use, the outer shell of the electric toothbrush can see the UI interface of the screen, and the light in the lower part lights up.

[0077] Effect embodiment: By injecting 99.999% argon gas into the electroplating furnace 3 under vacuum, evaporating and impacting the target material at a flow rate of 1.0×10-2Pa for 40 minutes, and cooperating with a temperature of 250 degrees, the target material 33 is separated into molecules and adsorbed on the surface of the product to form a uniform and smooth surface layer. The electroplating furnace 3 has a single hanging rod (bracket 31) for hanging the substrate 2 and a whole furnace hanging rod 32 for hanging the target material 33. The rotation of the single hanging rod is set to 20s / circle and the revolution of the whole furnace hanging rod 32 is set to 60s / circle. With the cooperation of the umbrella-shaped shielding tooling 1, when the molecules fall, an angle α of about 30 degrees is formed (this angle can be adjusted according to the required fading length); this angle allows the molecules to float inward evenly and gradually decrease, thereby achieving the purpose of fading.

[0078] The data obtained based on actual experiments are as follows:

[0079] It should be noted that the above data is for practical reference only. The target length and shielding tooling length / diameter can be adjusted according to the product's own properties and requirements.

[0080] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0081] It should be understood by those skilled in the art that the embodiments of the present invention described above are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A PVD evanescent coating method, characterized in that: include: Setting an evanescent coating region of a substrate; A shielding tool is provided, wherein the shielding tool has a reduced diameter shielding enclosure; Positioning the gradually disappearing coating area of ​​the substrate in the diameter-reducing shielding enclosure, wherein the gradually disappearing direction of the substrate coating is the same as the diameter-reducing direction of the diameter-reducing shielding enclosure; The substrate equipped with the shielding tool is fixed to the bracket of the PVD electroplating furnace, and forms a certain matching angle with the target sputtering path for PVD coating.

2. The PVD evanescent coating method according to claim 1, characterized in that: The shielding tool comprises a cone, a positioning member and an assembly member; the cone has a first opening with a larger diameter and a second opening with a smaller diameter at both ends, the positioning member is installed at the second opening by the assembly member, and the substrate is positioned on the positioning member; The reduced diameter shielding enclosure is defined as the barrel of the cone.

3. The PVD evanescent coating method according to claim 2, characterized in that: The assembly comprises a clamping body and a positioning groove, wherein the positioning groove is formed in the clamping body, the positioning piece is arranged on the substrate and is inserted in the positioning groove, and the substrate is clamped in the clamping body.

4. The PVD evanescent coating method according to claim 3, characterized in that: The substrate is implemented as a cylindrical structure, one end of the substrate is positioned and installed on the assembly part, and the other end of the substrate is fixed to the bracket.

5. PVD gradual coating mechanism, characterized in that: include: Electroplating furnace; A shielding tool, wherein the shielding tool has a reduced diameter shielding enclosure; A substrate, wherein the substrate is set with a gradually disappearing coating area, the substrate is fixed to the shielding tool, the gradually disappearing coating area is located in the diameter-reducing shielding enclosure, and the gradually disappearing direction of the substrate coating is in the same direction as the diameter-reducing direction of the diameter-reducing shielding enclosure; the substrate equipped with the shielding tool is fixed to the bracket of the PVD electroplating furnace and forms a certain PVD coating angle with the target sputtering path.

6. The PVD evanescent coating mechanism according to claim 5, characterized in that: The shielding tool comprises a cone, a positioning member and an assembly member; the cone has a first opening with a larger diameter and a second opening with a smaller diameter at both ends, the positioning member is installed at the second opening by the assembly member, and the substrate is positioned on the positioning member; The reduced diameter shielding enclosure is defined as the barrel of the cone.

7. The PVD evanescent coating mechanism according to claim 6, characterized in that: The assembly comprises a clamping body and a positioning groove, wherein the positioning groove is formed in the clamping body, the positioning piece is arranged on the substrate and is inserted in the positioning groove, and the substrate is clamped in the clamping body.

8. The PVD evanescent coating mechanism according to claim 7, characterized in that: The substrate is implemented as a cylindrical structure, one end of the substrate is positioned and installed on the assembly part, and the other end of the substrate is fixed to the bracket.

9. Application of the PVD gradual coating mechanism as claimed in any one of claims 5 to 8 in coating of an electric toothbrush housing, characterized in that: The substrate is implemented as an electric toothbrush housing.

10. The use according to claim 9, characterized in that: The electric toothbrush housing has a screen display area and a light display area; the screen display area is located at the beginning section of the gradually evanescent coating area along the gradually evanescent direction, and the light display area is located at the end section of the gradually evanescent coating area along the gradually evanescent direction.

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