Coloring-resistant method and surface coating device for appliance

Abstract

The invention discloses an anti-coloring method of an appliance. The method comprises the following steps: cleaning the outer surface of the appliance; s2, uniformly spraying anti-hydrolysis and anti-oxidation nanoscale dispersion liquid to the outer surface of the appliance treated in the step S1 through an appliance surface coating device so as to form a nano coating on the outer surface of the appliance; carrying out thermocuring treatment on the sprayed appliance; and checking the surface of the appliance to confirm the uniformity and adhesive force of the nano coating on the surface and confirm whether secondary curing is needed or not. An appliance surface coating device comprises a coating positioning assembly, and when a bidirectional lead screw rotates in the forward direction, two first product supports or two second product supports can move in the opposite direction, so that two opposite product bearing plates form a product bearing frame jointly supporting and clamping an appliance. According to the invention, the influence of external saliva, temperature or pH value on the surface of the appliance is isolated by using the hydrolysis resistance and oxidation resistance of the nano coating, so that the surface is prevented from yellowing or atomizing.

Description

Technical Field

[0001] This invention relates to the field of orthodontic technology, and in particular to a method for preventing staining of orthodontic appliances and a surface coating device. Background Technology

[0002] Existing silicone braces, myofunctional braces, bite guides, bite adjusters, and clear aligners are affected by saliva, temperature, and pH in the oral environment, which may cause them to yellow or become hazy, reducing their aesthetic appeal.

[0003] Therefore, there is a need to provide an anti-staining method and a surface coating device for orthodontic appliances to solve the above problems. Summary of the Invention

[0004] To overcome the above-mentioned shortcomings, the present invention aims to provide a method for preventing discoloration of orthodontic appliances and a surface coating device, which can quickly coat the surface of orthodontic appliances with a nano-coating. The nano-coating's anti-hydrolysis and anti-oxidation properties isolate the surface of the orthodontic appliance from the influence of external saliva, temperature, or pH value, thus preventing the surface from yellowing or fogging.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a method for preventing staining of an orthodontic appliance, S1: cleaning the outer surface of the orthodontic appliance; Removing grease, dust, and other contaminants from the surface of the orthodontic appliance prevents these contaminants from hindering the tight adhesion between the coating and the appliance during subsequent spraying, effectively improving the adhesion of the appliance surface. At the same time, the surface of the cleaned orthodontic appliance is more active, which is conducive to the uniform deposition of the sprayed coating material and ensures that the sprayed coating is uniform and smooth.

[0006] S2: The anti-hydrolysis and anti-oxidation nano-dispersion liquid is uniformly sprayed onto the outer surface of the orthodontic appliance after treatment in S1 through the orthodontic appliance surface coating device to form a nano-coating on the outer surface of the orthodontic appliance. S3: Perform thermosetting treatment on the sprayed orthodontic appliance to form a stable surface film on the appliance surface; S4: Inspect the surface of the orthodontic appliance from S3 to confirm the uniformity and adhesion of the nano-coating and determine if secondary curing is required. The hydrolysis-resistant and oxidation-resistant spray coating can isolate the appliance from external saliva after the user wears it, preventing the appliance from coming into contact with saliva and thus avoiding yellowing of the surface; it can also isolate the surface of the appliance from the effects of temperature or pH value, preventing fogging.

[0007] Furthermore, the hydrolysis-resistant and oxidation-resistant nanoscale dispersion is a Teflon dispersion. Teflon is a polymer material called polytetrafluoroethylene (PTFE), which has excellent oxidation and hydrolysis resistance. By preparing a Teflon dispersion and spraying it onto the surface of the orthodontic appliance to form a nano-protective coating, it effectively isolates the surface of the orthodontic appliance from the influence of external saliva, temperature, and pH value, preventing the surface from oxidizing, yellowing, or discoloring after prolonged use, effectively extending the lifespan of the orthodontic appliance, and reducing the user's operating costs.

[0008] Furthermore, when the orthodontic appliance described in S2 is made of silicone, a primer can be applied to the surface of the orthodontic appliance before vacuum coating.

[0009] The use of a primer can improve the activity of the silicone product surface, enhance the adhesion strength between the Teflon dispersion and the orthodontic appliance surface when the Teflon dispersion is sprayed on, and ensure the overall stability and adhesion of the orthodontic appliance.

[0010] Furthermore, the outer surface of the orthodontic appliance can be cleaned using a solvent or plasma cleaner. Solvents and plasma cleaners can effectively remove contaminants and grease from the surface of silicone orthodontic appliances, ensuring a clean surface and avoiding affecting the effect of the vacuum coating on the surface of the orthodontic appliance.

[0011] A coating device for orthodontic appliances, used for spraying coating onto the surface of any orthodontic appliance, includes a mounting base, a platform inserted into the mounting base, and a coating positioning assembly disposed on the platform. The coating positioning assembly includes a bidirectional lead screw and a sliding guide rod arranged in a cross shape. A product support second is respectively disposed at both ends of the bidirectional lead screw along its length. Each product support second is hinged to a product support first disposed at both ends of the sliding guide rod along its length via a hinge assembly. A product support plate is disposed on both the product support first and the product support second. When the bidirectional lead screw rotates in the forward direction, the two product supports first or second can move towards each other, so that the two opposing product support plates form a product support frame that jointly supports and clamps the orthodontic appliance.

[0012] Furthermore, the hinge assembly includes a hinge rod 1 and a hinge rod 2, both coaxially hinged to the product support 2 at one end. The ends of the hinge rod 1 and the hinge rod 2 away from the bidirectional lead screw are respectively hinged to the hinge seats on the two product supports 1. This forms a quadrilateral linkage structure with the two hinge rods 1 and 2. When the product support plates on the two product supports 2 move towards each other, the linkage can drive the product support plates on the two product supports 1 to move away from each other, so that the orthodontic appliance is clamped in only one of the two directions, either front-back or left-right, at any given time.

[0013] Furthermore, a motor mounting plate is horizontally arranged on the side of the mounting base, and the drive motor is vertically mounted on the motor mounting plate. The drive end of the vertical motor is connected to one end of a bidirectional lead screw via a transmission belt. When the drive motor drives the drive end to rotate, the bidirectional lead screw can rotate clockwise or counterclockwise relative to the support base supporting it. The drive motor provides power for the rotation of the bidirectional lead screw, eliminating the need for manual adjustment of the product's support plate position, saving time and effort.

[0014] Furthermore, the lower surface of the stage is connected to the mounting base via a support rod, and the mounting base has a fixing slot from top to bottom for inserting and limiting the position of the support rod. This facilitates the removal of the stage from the mounting base for cleaning or maintenance of the coating positioning components on the stage, saving time and effort.

[0015] The beneficial effects of this invention are: In this invention, a nano-coating is applied to the surface of the orthodontic appliance, and the anti-hydrolysis and anti-oxidation properties of the nano-coating are used to isolate the surface of the orthodontic appliance from the influence of external saliva, temperature or pH value, so as to avoid yellowing or haze on the surface of the orthodontic appliance, thereby achieving the purpose of anti-staining of the orthodontic appliance. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the overall method of an embodiment of the present invention; Figure 2 This is a partial cross-sectional schematic diagram of an embodiment of the present invention; Figure 3 This is a partial top view of an embodiment of the present invention; In the diagram: 1. Mounting base; 2. Coating positioning assembly; 21. Drive motor; 22. Motor mounting plate; 23. Transmission belt; 24. Two-way lead screw; 25. Sliding guide rod; 26. Support base; 27. Product support one; 28. Product support two; 29. ​​Hinge rod one; 210. Hinge rod two; 211. Hinge base; 3. Platform; 4. Support rod; 5. Product bearing plate. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0018] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly, for example, referring to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] See appendix Figure 1 As shown, an anti-staining method for an orthodontic appliance in this embodiment includes the following steps: S1: Clean the outer surface of the orthodontic appliance; Removing grease, dust, and other contaminants from the surface of the orthodontic appliance prevents these contaminants from hindering the tight adhesion between the coating and the appliance during subsequent spraying, effectively improving the adhesion of the appliance surface. At the same time, the surface of the cleaned orthodontic appliance is more active, which is conducive to the uniform deposition of the sprayed coating material and ensures that the sprayed coating is uniform and smooth.

[0021] S2: The anti-hydrolysis and anti-oxidation nano-dispersion liquid is uniformly sprayed onto the outer surface of the orthodontic appliance after treatment in S1 through the orthodontic appliance surface coating device to form a nano-coating on the outer surface of the orthodontic appliance. The nano-coating's anti-hydrolysis and anti-oxidation properties isolate the orthodontic appliance surface from the influence of external saliva, temperature, or pH value, preventing the surface from yellowing or becoming hazy, thus achieving the purpose of anti-staining the orthodontic appliance.

[0022] S3: Perform heat curing treatment on the sprayed orthodontic appliance; To form a stable surface film on the surface of the orthodontic appliance; In some embodiments, the thermosetting process may employ hot air heating or oven heating to increase the curing speed of the coating on the orthodontic appliance surface, thereby improving the efficiency of orthodontic appliance processing.

[0023] S4: Inspect the surface of the orthodontic appliance from S3 to confirm the uniformity and adhesion of the nano-coating and determine if secondary curing is required. The hydrolysis-resistant and oxidation-resistant spray coating can isolate the appliance from external saliva after the user wears it, preventing the appliance from coming into contact with saliva and thus avoiding yellowing of the surface; it can also isolate the surface of the appliance from the effects of temperature or pH value, preventing fogging.

[0024] In some embodiments, after the orthodontic appliance is coated, the uniformity and adhesion of the coating on its surface need to be tested to ensure that the coating is uniformly and firmly attached to the surface of the orthodontic appliance. A uniform coating can effectively prevent corrosion, oxidation and chemical erosion, and extend the service life of the orthodontic appliance; a coating with strong adhesion can ensure that the orthodontic appliance maintains its performance during long-term use.

[0025] Specifically, during uniformity testing, staff can visually inspect the surface of the orthodontic appliance for phenomena such as bubbles, cracks, or drips; during adhesion testing, a pull-out adhesion tester can be used.

[0026] It should be noted that the testing of coating uniformity and adhesion are existing technologies, and the specific testing methods and instruments will not be elaborated here.

[0027] The hydrolysis-resistant and oxidation-resistant nanoscale dispersion is a Teflon dispersion.

[0028] Teflon is a polymer material called polytetrafluoroethylene (PTFE). It has excellent antioxidant and hydrolysis resistance. When Teflon is made into a dispersion, it is sprayed onto the surface of orthodontic appliances to form a nano-protective coating. This effectively isolates the surface of the orthodontic appliance from the influence of external saliva, temperature and pH value, preventing the surface of the orthodontic appliance from oxidizing and turning yellow or discolored after long-term use. This effectively extends the service life of the orthodontic appliance and reduces the user's cost.

[0029] In some embodiments, Teflon can be prepared into a dispersion using a high-pressure homogenizer, ball mill, or ultrasonic disperser. It should be noted that Teflon spray dispersions are existing materials, and their specific manufacturing steps will not be elaborated upon here.

[0030] When the orthodontic appliance described in S2 is made of silicone, a primer can be applied to the surface of the orthodontic appliance before vacuum coating.

[0031] The use of a primer can improve the activity of the silicone product surface, enhance the adhesion strength between the Teflon dispersion and the orthodontic appliance surface when the Teflon dispersion is sprayed on, and ensure the overall stability and adhesion of the orthodontic appliance.

[0032] It should be noted that the primer is an existing material reagent, and its specific components and usage will not be elaborated here.

[0033] When cleaning the outer surface of the orthodontic appliance, it can be cleaned using a solvent or plasma cleaner. Solvents and plasma cleaners can effectively remove contaminants and grease from the surface of silicone orthodontic appliances, ensuring a clean surface and avoiding affecting the effect of the vacuum coating on the surface of the orthodontic appliance.

[0034] In some embodiments, the orthodontic appliance may also be made of metal. It can be cleaned by a plasma cleaner to remove dirt from the surface, keep the surface clean and tidy, and avoid affecting the subsequent surface coating.

[0035] It should be noted that plasma cleaners and solvents that can clean silicone are existing technologies, and their specific structures or chemical compositions will not be elaborated here.

[0036] See appendix Figures 2 to 3 As shown, this embodiment of an orthodontic appliance surface coating device is used to spray coating on the surface of any orthodontic appliance. It includes a mounting base 1, a platform 3 inserted into the mounting base 1, and a coating positioning component 2 disposed on the platform 3. The coating positioning component 2 includes a bidirectional lead screw 24 arranged in a cross shape and a sliding guide rod 25. Each end of the bidirectional lead screw 24 in the length direction is provided with a product support 28. Each product support 28 is hinged to a product support 27 disposed at both ends of the sliding guide rod 25 in the length direction through a hinge component. Each product support 27 and product support 28 is provided with a product carrier plate 5. When the bidirectional lead screw 24 rotates in the forward direction, the two product supports 27 or product supports 28 can move towards each other so that the two opposing product carrier plates 5 form a product carrier frame that supports and clamps the orthodontic appliance.

[0037] In some embodiments, the product support plates 5 on the two product supports 27 are arranged opposite to each other, and the product support plates 5 on the two product supports 28 are also arranged opposite to each other. The product support plates 5 can be L-shaped. When the bidirectional screw 24 rotates in the forward direction to bring the two product supports 27 closer to each other and the corresponding two product supports 28 move away from each other, one horizontal side of the product support plate 5 on the product support 27 can support the placement of the orthodontic appliance, and the other vertical side can clamp the orthodontic appliance from the left and right sides, so that the front and back of the orthodontic appliance can be sprayed without obstruction. The clamping of the two opposite product support plates 5 can also prevent the orthodontic appliance from shifting in position due to air pressure during the spraying process, which would affect the uniformity of its surface spraying. Conversely, when the bidirectional lead screw 24 rotates in the opposite direction, causing the two product supports 28 to move closer to each other and the two product supports 27 to move further apart, one horizontal side of the product support plate 5 on the product support 28 can support the placement of the orthodontic appliance, and the other vertical side can clamp the orthodontic appliance from the front and rear sides, so that the left and right sides of the orthodontic appliance can be sprayed without obstruction.

[0038] It should be noted that the product support plate 5 should be moved until the orthodontic appliance does not shift position under the air pressure of the spray gun, so as to avoid excessive clamping force causing deformation of the orthodontic appliance; during the spraying process, curing treatment can be carried out simultaneously, so that the surface coating of the orthodontic appliance will not be damaged by the clamping of the product support plate 5 when spraying in one of the forward, backward or left and right directions.

[0039] The hinge assembly includes a hinge rod 29 and a hinge rod 210, both coaxially hinged at one end to product support 28. The ends of hinge rods 29 and 210 away from the bidirectional lead screw 24 are respectively hinged to hinge seats 211 on two product supports 27. This forms a quadrilateral linkage structure where the two hinge rods 29 and 210 create a quadrilateral link structure. When the product support plates 5 on the two product supports 28 move towards each other, the link can drive the product support plates 5 on the two product supports 27 to move away from each other, ensuring that the orthodontic appliance is clamped in either the front-back or left-right direction at any given time.

[0040] In some embodiments, the product support plate 5 on both product support 1 27 and product support 28 is located on the same horizontal plane.

[0041] A motor mounting plate 22 is horizontally arranged on the side of the mounting base 1. A drive motor 21 is vertically mounted on the motor mounting plate 22. The drive end of the vertical motor is connected to one end of a bidirectional lead screw 24 via a transmission belt 23. When the drive motor 21 drives the drive end to rotate, the bidirectional lead screw 24 can rotate clockwise or counterclockwise relative to its supporting base 26. The drive motor 21 provides power for the rotation of the bidirectional lead screw 24, eliminating the need for manual adjustment of the product's support plate 5, thus saving time and effort.

[0042] The lower surface of the stage 3 is connected to the mounting base 1 via a support rod 4. The mounting base 1 has a fixing slot from top to bottom for inserting and limiting the support rod 4. This facilitates the removal of the stage 3 from the mounting base 1 for cleaning or maintenance of the coating positioning components on the stage 3, saving time and effort.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for preventing staining of an orthodontic appliance, characterized in that: Includes the following steps: S1: Clean the outer surface of the orthodontic appliance; S2: The hydrolysis-resistant and oxidation-resistant nano-scale dispersion is uniformly sprayed onto the outer surface of the orthodontic appliance treated in S1 to form a nano-coating on the outer surface of the orthodontic appliance. S3: Perform heat curing treatment on the sprayed orthodontic appliance; S4: Inspect the surface of the orthodontic appliance in S3 and confirm the uniformity and adhesion of the surface nano-coating to determine whether secondary curing is required.

2. The anti-staining method for an orthodontic appliance according to claim 1, characterized in that: The hydrolysis-resistant and oxidation-resistant nanoscale dispersion is a Teflon dispersion.

3. The anti-staining method for an orthodontic appliance according to claim 1, characterized in that: When the orthodontic appliance described in S2 is made of silicone, a primer can be applied to the surface of the orthodontic appliance before vacuum coating.

4. The anti-staining method for an orthodontic appliance according to claim 3, characterized in that: The outer surface of the orthodontic appliance can be cleaned using a solvent or plasma cleaner.

5. A coating apparatus for an orthodontic appliance surface, used for spraying coating onto the surface of any of the orthodontic appliances described in claims 1-4, characterized in that: The device includes a mounting base, a platform inserted into the mounting base, and a coating positioning assembly disposed on the platform. The coating positioning assembly includes a bidirectional lead screw and a sliding guide rod arranged in a cross shape. Each end of the bidirectional lead screw is provided with a product support second. Each product support second is hinged to a product support first disposed at each end of the sliding guide rod via a hinge assembly. Each product support first and product support second is provided with a product carrier plate. When the bidirectional lead screw rotates in the forward direction, the two product supports first or product support second can move towards each other, so that the two opposing product carrier plates form a product carrier frame that jointly supports and clamps the orthodontic appliance.

6. The orthodontic appliance surface coating device according to claim 4, characterized in that: The hinge assembly includes a hinge rod 1 and a hinge rod 2, one end of which is coaxially hinged to the product support 2. The ends of the hinge rod 1 and the hinge rod 2 that are away from the bidirectional lead screw are respectively hinged to the hinge seats on the two product supports 1.

7. The orthodontic appliance surface coating device according to claim 4, characterized in that: A motor mounting plate is horizontally arranged on the side of the mounting base, and the drive motor is vertically mounted on the motor mounting plate. The drive end of the vertical motor is connected to one end of the bidirectional lead screw through a transmission belt. When the drive motor drives the drive end to rotate, the bidirectional lead screw can rotate forward or backward relative to the support base supporting it.

8. The orthodontic appliance surface coating device according to claim 4, characterized in that: The lower surface of the platform is connected to the mounting base via a support rod. The mounting base has a fixed slot from top to bottom for inserting and limiting the position of the support rod.

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