PVD fading coating mechanism and shielding tool thereof

Abstract

The utility model provides a PVD fading coating mechanism and a tool thereof, 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 becomes 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 becomes 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] This utility model relates to the field of electroplating film formation, and particularly to a PVD fading coating mechanism and its masking fixture. Background Technology

[0002] Physical vapor deposition (PVD) is a technique that uses physical methods under vacuum conditions to vaporize the surface of a material source (solid or liquid) into gaseous atoms or molecules, or partially ionize them into ions, and then deposits a thin film with a specific function on the substrate surface through a low-pressure gas (or plasma) process. PVD is one of the main surface treatment technologies.

[0003] For certain products, there are specific requirements for film transparency. For example, in the body of an electric toothbrush, the screen is located near the top of the body, and the warning light group is located at the bottom. Therefore, the PVD coating of the electric toothbrush casing needs to be applied from top to bottom, achieving a gradual electroplating film that goes from opaque to transparent. Existing electroplating methods all form uniform films, and no technology has yet been found that can meet this requirement.

[0004] Therefore, this utility model urgently needs to propose an electroplating technology that can gradually eliminate film formation.

[0005] It should be noted that the information disclosed in the background section of this utility model is intended only to enhance the understanding of the general background of this utility model, and should not be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] In view of the above, one objective of this utility model is to provide an electroplating mechanism for gradual film formation;

[0007] The second objective of this utility model is to provide a masking fixture specifically for an electroplating mechanism that gradually fades film formation.

[0008] For one purpose, this utility model provides a PVD gradient coating mechanism, characterized in that it includes:

[0009] Electroplating furnace;

[0010] A shielding fixture having a reduced-diameter shielding enclosure;

[0011] The substrate has a gradually fading coating area and is fixed to the masking fixture. The gradually fading coating area is located within the diameter reduction masking enclosure, and the fading direction of the substrate coating is the same as the diameter reduction direction of the diameter reduction masking enclosure. The substrate with the masking fixture is fixed to the support of the PVD electroplating furnace and forms a certain PVD coating angle with the sputtering path of the target material.

[0012] Preferably, the shielding fixture includes a cone, a positioning element, and an assembly; the cone has a first opening with a larger diameter and a second opening with a smaller diameter at both ends, the positioning element is installed in the second opening by the assembly, and the substrate is positioned on the positioning element; the diameter reduction shielding enclosure is defined as the body of the cone.

[0013] Preferably, the assembly includes a clamping body and a positioning groove, the positioning groove being formed in the clamping body, the positioning element being disposed on the substrate and positioned and inserted into the positioning groove, and the substrate being clamped in the clamping body.

[0014] Preferably, the substrate is implemented as a cylindrical structure, with one end of the substrate positioned and installed on the assembly, and the other end fixed to the bracket.

[0015] The beneficial effects of the above technical solutions can come from one or a combination of the following:

[0016] By placing the substrate within a shielding fixture with a diameter reduction shielding enclosure, the space between the substrate's fading coating area and the diameter reduction shielding enclosure becomes smaller and smaller. During electroplating in the electroplating furnace, this creates a matching angle of approximately 30 degrees with the falling molecules (this matching angle can be adjusted according to the required fading length). This matching angle allows the molecules to fall evenly inward and gradually decrease, thereby achieving the purpose of fading.

[0017] The substrate can be clamped and positioned using positioning components and assembly parts, making it easy to fix the position and disassemble.

[0018] Based on these two objectives, this utility model provides a masking fixture for a PVD fading coating mechanism, characterized in that it includes a cone, a positioning element, and an assembly; the cone has a first opening with a larger diameter and a second opening with a smaller diameter at both ends, the positioning element is installed in the second opening by the assembly, and the substrate is positioned on the positioning element; the diameter reduction masking enclosure is defined as the body of the cone.

[0019] Preferably, the assembly includes a clamping body and a positioning groove, the positioning groove being formed in the clamping body, the positioning element being disposed on the substrate and positioned and inserted into the positioning groove, and the substrate being clamped in the clamping body.

[0020] Preferably, the substrate is implemented as a cylindrical structure, with one end of the substrate positioned and installed on the assembly, and the other end fixed to the bracket.

[0021] The beneficial effects of the above technical solutions can come from one or a combination of the following:

[0022] By placing the substrate within a shielding fixture with a diameter reduction shielding enclosure, the space between the substrate's fading coating area and the diameter reduction shielding enclosure becomes smaller and smaller. During electroplating in the electroplating furnace, this creates a matching angle of approximately 30 degrees with the falling molecules (this matching angle can be adjusted according to the required fading length). This matching angle allows the molecules to fall evenly inward and gradually decrease, thereby achieving the purpose of fading.

[0023] The substrate can be clamped and positioned using positioning components and assembly parts, making it easy to fix the position and disassemble. Attached Figure Description

[0024] Figure 1 This diagram illustrates the structure of the shielding fixture in this invention.

[0025] Figure 2 This diagram illustrates the assembly of the substrate and the shielding fixture in this invention.

[0026] Figure 3 It expresses Figure 2 Axial sectional view.

[0027] Figure 4 It expresses Figure 2 Exploded view of the structure.

[0028] Figure 5 This diagram illustrates the working state of the PVD fading coating mechanism in this invention.

[0029] Among them: 1. Masking fixture; 11. Conical cylinder; 110. Reducing diameter masking enclosure; 111. First opening; 112. Second opening; 12. Positioning component; 13. Assembly component; 131. Clamping body; 132. Positioning groove; 2. Substrate; 20. Gradient coating area; 21. Screen display area; 22. Light display area; 3. Electroplating furnace; 31. Support; 32. Furnace hanging rod; 33. Target material. Detailed Implementation

[0030] The preferred embodiments described below are merely examples, and other obvious variations will be apparent to those skilled in the art. The basic principles of this invention as defined in the following description can be applied to other implementations, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this invention.

[0031] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0032] Structural Example 1:

[0033] Please combine Figures 1-5 This invention provides a PVD fading coating mechanism, including an electroplating furnace 3, a masking fixture 1, and a substrate 2. Specifically, the masking fixture 1 has a diameter reduction masking enclosure 110; the substrate 2 is provided with a fading coating region 20, the substrate 2 is fixed to the masking fixture 1, the fading coating region 20 is located within the diameter reduction masking enclosure 110, and the fading direction of the coating on the substrate 2 is the same as the diameter reduction direction of the diameter reduction masking enclosure 110; the substrate 2 with the masking fixture 1 is fixed to the support 31 of the PVD electroplating furnace 3, and forms a certain PVD coating angle with the sputtering path of the target material 33.

[0034] In this embodiment, the substrate 2 is implemented as a cylindrical housing for the outer casing of small household appliances, such as electric toothbrushes. Here, "gradual fading coating region 20" is defined as a region where the film thickness decreases from thick to thin and the transparency increases from weak to strong. For example, the outer periphery of the cylindrical housing of an electric toothbrush from top to bottom is defined as "gradual fading coating region 20".

[0035] Specifically, the shielding fixture 1 includes a cone 11, a positioning element 12, and an assembly 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 element 12 is mounted on the second opening 112 by the assembly 13, and the substrate 2 is positioned on the positioning element 12. The diameter-reducing shielding enclosure 110 is defined as the body of the cone 11.

[0036] It should be noted that the “diameter reduction” described in this embodiment is interpreted as the diameter or outer dimension of the diameter reduction shielding enclosure 110 gradually decreasing, thereby making the space between the diameter reduction shielding enclosure 110 and the fading coating area 20 gradually decrease.

[0037] The cone 11 can be implemented as an umbrella-shaped cone or a polygonal cone. The aim is to achieve the technical objective of gradually reducing the space between the diameter-reducing shielding barrier 110 and the fading coating area 20. This embodiment preferably uses an umbrella-shaped cone. Please refer to... Figure 5 In the conical tube 11 of the umbrella-shaped structure, the angle α between the diameter-reducing shielding enclosure 110 and the central axis should be less than 90° in actual implementation to achieve the conical structure. Preferably, the included angle α is implemented as 30°, but its angle can be adjusted according to the required fading length. The longer the length, the larger the included angle α should be, so that the innermost part of the diameter-reducing shielding enclosure 11 can have sufficient deposition space.

[0038] Furthermore, the assembly 13 includes a clamping body 131 and a positioning groove 132. The positioning groove 132 is formed in the clamping body 131, and the positioning element 12 is disposed on the substrate 2 and positioned and inserted into the positioning groove 132, so that the substrate 2 is clamped in the clamping body 131. Preferably, the positioning element 12 is a positioning post, one end of which is glued or fixed to the substrate 2 by other detachable means. The clamping body 131 is a clamping structure used to clamp and fix the substrate 2, while the positioning post is inserted into the positioning groove 132 for positioning. The clamping body 131 of the assembly 13 is fixed by friction through threaded assembly with the second opening 112, or directly by the clamping body 131 being squeezed by the second opening 112. Specifically, when the substrate 2 is inserted into the clamping body 131, it has an outward tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112, and achieving frictional fixation.

[0039] As described above, taking the electric toothbrush housing as an example, the substrate 2 is implemented as a cylindrical structure, with one end of the substrate 2 positioned and installed on the assembly 13, and the other end fixed to the bracket 31 of the electroplating furnace 3.

[0040] The electric toothbrush housing has a screen display area 21 and a lamp display area 22. The screen display area 21 is located at the beginning of the fading coating area 20 along the fading direction or in the area outside the fading coating area 20 that is uniformly coated, i.e., the area that the diameter reduction shielding 110 fails to shield. The lamp display area 22 is located at the end of the fading coating area 20 along the fading direction.

[0041] This embodiment does not impose specific limitations on the PVD electroplating furnace 3, its structure is existing technology, and its coating principle will not be elaborated.

[0042] As described above, one end of the positioning post is glued or fixed to the substrate 2 by other detachable means. Then, the substrate 2 is inserted into the second opening 112 in the masking fixture 1 and installed on the assembly 13 of the masking fixture 1. Specifically, the substrate 2 is inserted into the clamping body 131 of the assembly 13, which has an outward tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112 and achieving frictional fixation. At this point, the entire masking method of the substrate 2 is assembled.

[0043] In this embodiment, the fitting angle α is not limited. It is sufficient that the opening of the reducing shielding barrier 110 of the shielding fixture 1 faces 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 fixture 1, the space between the reducing shielding barrier 110 and the fading coating area 20 gradually decreases; consequently, the deposition space for the film-forming particles of the target material 33 becomes increasingly smaller, thus achieving the fading coating effect. Specifically, the substrate 2 is placed inside the shielding fixture with the reducing shielding barrier 110, making the space between the fading coating area of ​​the substrate 2 and the reducing shielding barrier 110 increasingly smaller. During electroplating in the electroplating furnace 3, a fitting angle α of approximately 30 degrees is formed with the molecular sputtering or evaporation direction (this fitting angle can be adjusted according to the required fading length and is not a unique limitation). This fitting angle allows molecules to drift inward uniformly and gradually decrease, thereby achieving the purpose of fading.

[0044] Please see Figure 5 The electroplating furnace 3 has a single hanging rod (support) for hanging the substrate 2 and a furnace-wide hanging rod 32 for hanging the target material 33. The rotation of the single hanging rod is set to 20 seconds per revolution and the revolution of the furnace-wide hanging rod 32 is set to 60 seconds per revolution. This allows the substrate 2 with the shielding fixture 1 to rotate counterclockwise while revolving around the furnace-wide hanging rod 32. With the cooperation of the umbrella-shaped shielding fixture 1, it forms an angle α of approximately 30 degrees with the direction of molecular sputtering or evaporation (this angle can be adjusted according to the required fading length). This angle allows the molecules to fall inward evenly and gradually decrease, thereby achieving the purpose of fading.

[0045] The beneficial effects of this embodiment:

[0046] By placing the substrate within a shielding fixture with a diameter reduction shielding enclosure, the space between the substrate's gradually disappearing coating area and the diameter reduction shielding enclosure becomes smaller and smaller. During electroplating in the electroplating furnace, this creates an approximately 30-degree angle of contact with the falling molecules (the approximation here is based on the general horizontal direction of the molecules entering the diameter reduction shielding enclosure 110 in the sputtering or evaporation direction). This angle of contact allows the molecules to fall evenly inward and gradually decrease, thus achieving the purpose of gradual disappearance.

[0047] The substrate can be clamped and positioned using positioning components and assembly parts, making it easy to fix the position and disassemble.

[0048] Structural Example 2:

[0049] Please see Figures 1-5This embodiment provides a masking fixture for use in a fade-out coating mechanism. The masking fixture 1 includes a cone 11, a positioning member 12, and a mounting 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 mounted on the second opening 112 by the mounting member 13, and the substrate 2 is positioned on the positioning member 12. The diameter-reducing masking enclosure 110 is defined as the body of the cone 11.

[0050] It should be noted that the “diameter reduction” described in this embodiment is interpreted as the diameter or outer dimension of the diameter reduction shielding enclosure 110 gradually decreasing, thereby making the space between the diameter reduction shielding enclosure 110 and the fading coating area 20 gradually decrease.

[0051] The cone 11 can be implemented as an umbrella-shaped cone 11 or a polygonal cone 11. The aim is to achieve the technical objective of gradually reducing the space between the diameter-reducing shielding barrier 110 and the fading coating area 20. This embodiment preferably uses an umbrella-shaped cone 11. Please refer to... Figure 5 In the conical tube 11 of the umbrella-shaped structure, the angle α between its diameter-reducing shielding enclosure 110 and the central axis should be less than 90° in actual implementation to achieve the conical structure. Preferably, this angle is implemented as 30°, but its angle can be adjusted according to the required fading length.

[0052] Furthermore, the assembly 13 includes a clamping body 131 and a positioning groove 132. The positioning groove 132 is formed in the clamping body 131, and the positioning element 12 is disposed on the substrate 2 and positioned and inserted into the positioning groove 132, so that the substrate 2 is clamped in the clamping body 131. Preferably, the positioning element 12 is a positioning post, one end of which is glued or fixed to the substrate 2 by other detachable means. The clamping body 131 is a clamping structure used to clamp and fix the substrate 2, while the positioning post is inserted into the positioning groove 132 for positioning. The clamping body 131 of the assembly 13 is fixed by friction through threaded assembly with the second opening 112, or directly by the clamping body 131 being squeezed by the second opening 112. Specifically, when the substrate 2 is inserted into the clamping body 131, it has an outward tension on the clamping body 131, thereby achieving close contact between the clamping body 131 and the second opening 112, and achieving frictional fixation.

[0053] The beneficial effects of this embodiment are:

[0054] By placing the substrate within a shielding fixture with a diameter reduction shielding enclosure, the space between the substrate's fading coating area and the diameter reduction shielding enclosure becomes smaller and smaller. During electroplating in the electroplating furnace, this creates a matching angle of approximately 30 degrees with the falling molecules (this matching angle can be adjusted according to the required fading length). This matching angle allows the molecules to fall evenly inward and gradually decrease, thereby achieving the purpose of fading.

[0055] The substrate can be clamped and positioned using positioning components and assembly parts, making it easy to fix the position and disassemble.

[0056] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

[0057] Those skilled in the art should understand that the embodiments of the present invention described above are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the described principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A PVD fading coating mechanism, characterized in that, include: Electroplating furnace; A shielding fixture having a reduced-diameter shielding enclosure; The substrate has a gradually fading coating area and is fixed to the masking fixture. The gradually fading coating area is located within the diameter reduction masking enclosure, and the fading direction of the substrate coating is the same as the diameter reduction direction of the diameter reduction masking enclosure. The substrate with the masking fixture is fixed to the support of the PVD electroplating furnace and forms a certain PVD coating angle with the sputtering path of the target material.

2. The PVD fading coating mechanism according to claim 1, characterized in that, The shielding fixture includes a cone, a positioning element, and an assembly; the cone has a first opening with a larger diameter and a second opening with a smaller diameter at both ends, the positioning element is installed in the second opening by the assembly, and the substrate is positioned on the positioning element; The diameter-reducing shielding enclosure is defined as the body of the cone.

3. The PVD fading coating mechanism according to claim 2, characterized in that, The assembly includes a clamping body and a positioning groove. The positioning groove is formed in the clamping body, and the positioning element is disposed on the substrate and positioned and inserted into the positioning groove. The substrate is clamped in the clamping body.

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

5. The masking fixture for the PVD fade-out coating mechanism as described in any one of claims 2 to 4, characterized in that, It includes a cone, a positioning element, and an assembly; the cone has a first opening with a larger diameter and a second opening with a smaller diameter at both ends, the positioning element is installed in the second opening by the assembly, and the substrate is positioned on the positioning element; The diameter-reducing shielding enclosure is defined as the body of the cone.

6. The shielding fixture according to claim 5, characterized in that, The assembly includes a clamping body and a positioning groove. The positioning groove is formed in the clamping body, and the positioning element is disposed on the substrate and positioned and inserted into the positioning groove. The substrate is clamped in the clamping body.

7. The shielding fixture according to claim 6, characterized in that, The substrate is implemented as a cylindrical structure, with one end of the substrate positioned and installed on the assembly, and the other end fixed to the bracket.

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