Manufacturing method of ceramic hand mold with micro textures

Abstract

The invention provides a manufacturing method of a ceramic hand mold with micro-textures. The manufacturing method comprises the following steps: S1, manufacturing a shading jig with the micro-textures; s2, screening a ceramic hand mold; s3, a tackifying layer is additionally arranged on the surface of the screened ceramic hand mold; s4, additionally arranging a photosensitive adhesive coating on the surface of the tackifying layer of the ceramic hand mold prepared in the step S3; s5, a shading jig is tightly attached to the photosensitive adhesive coating, and exposure is conducted through ultraviolet rays; and S6, cleaning the ceramic hand mold after film separation to obtain the ceramic hand mold with micro textures. According to the manufacturing method provided by the invention, the hand mold screening jig is used for screening the ceramic hand mold, so that the operation steps are simple and are accurately controlled in a process allowable range; a micron-level micro-texture shading jig is manufactured through the silk-screen technology; in cooperation with self-made original fitting equipment, the shading jig is tightly fitted to the photosensitive adhesive coating through a vacuum adsorption method, and the technical problem that a plane shading jig is difficult to be tightly fitted to the complex 3D curved surface of the ceramic hand mold is solved.

Description

Technical Field

[0001] The present invention relates to the field of preparation of hand models, and particularly to a manufacturing method of a ceramic hand model with micro-textures. Background Art

[0002] A glove hand model is a tool for simulating the shape and touch of the human hand. Using a glove hand model, gloves of various materials and specifications can be manufactured. At the same time, the base material of the glove hand model itself can also be rubber, silica gel, ceramics, etc. Ceramic materials have high hardness and strength, so that the ceramic hand model is not easily deformed or worn during long-term use and can maintain its original shape and accuracy. Moreover, the surface of the ceramic is smooth and delicate, so the application of the ceramic hand model is very extensive.

[0003] When it is necessary to make textures on the surface of a ceramic hand model, the traditional process is sintering. Rough surfaces can be made by sandblasting, but generally there are no strict dimensional requirements, and a texture structure with low requirements can be obtained. In some specific fields, such as the production of medical gloves, having a micro-texture structure can increase the grip and antibacterial effects of the gloves. However, when it is necessary to make a regular micro-texture structure on the surface of a ceramic hand model, the traditional process cannot achieve it. Summary of the Invention

[0004] Therefore, the present invention provides a manufacturing method of a ceramic hand model with micro-textures to solve the technical problem that the traditional process cannot achieve making a regular micro-texture structure on the surface of a ceramic hand model as stated in the background art.

[0005] The present invention provides the following technical solutions: A manufacturing method of a ceramic hand model with micro-textures, including the following manufacturing steps:

[0006] S1. Fabricate a light-shielding fixture with micro-textures;

[0007] S2. Screen ceramic hand models;

[0008] S3. Add an adhesion-promoting layer to the surface of the screened ceramic hand model;

[0009] S4. Add a photosensitive adhesive coating to the surface of the adhesion-promoting layer of the ceramic hand model prepared in step S3;

[0010] S5. Closely attach the light-shielding fixture described in step S1 to the photosensitive adhesive coating of the ceramic hand model, and through ultraviolet exposure, the unshielded part of the photosensitive adhesive coating is cured;

[0011] S6. Separate the film and clean the separated ceramic hand model to remove the uncured part of the photosensitive adhesive coating, and a ceramic hand model with micro-textures is obtained.

[0012] Further, in the step S1, the light-shielding jig with micro-textures is fabricated using screen printing technology, where the pattern shape is designed according to the desired micro-texture pattern. The micro-texture pattern specifically consists of a number of stripes with a width of 1 um - 100 um and a gap interval of 1 um - 100 um.

[0013] Further, in the screen printing technology, the thickness of the transparent flexible material is 100 um - 200 um.

[0014] Further, in the step S2, the ceramic hand molds are screened by the hand mold screening jig, and the following steps are also included:

[0015] S2-1. Place the ceramic hand mold to be screened into the inner cavity with the shape of the target hand mold in the hand mold screening jig. If it can be completely placed into the inner cavity, the ceramic hand mold to be screened is marked as qualified; otherwise, it is marked as unqualified. The size of the inner cavity is larger than the size of the target hand mold, and the larger size does not exceed 2 mm.

[0016] Further, in the step S3, the material of the tackifying layer is one or several of rosin resins, polyterpene resins, petroleum resins, and phenolic resins, and the thickness is 20 - 200 um.

[0017] Further, in the step S5, the light-shielding jig is closely attached to the photosensitive adhesive coating on the ceramic hand mold using a laminating device. The laminating device includes a base and a transparent top cover. The base is recessed with a first cavity that accommodates half of the ceramic hand mold, and the bottom of the recess is provided with air suction holes. The transparent top cover is recessed with a second cavity that accommodates the other half of the ceramic hand mold. The first cavity and the second cavity are matched to form a closed space that can accommodate the entire ceramic hand mold.

[0018] Further, the following steps are also included in the step S5:

[0019] S5-1. Fix the light-shielding jig on the transparent top cover;

[0020] S5-2. Place the ceramic hand mold processed in the step S4 into the first cavity;

[0021] S5-3. Cover the transparent top cover;

[0022] S5-4. Use the vacuum adsorption method to exhaust the laminating device through the air suction holes, so that the light-shielding jig in the step S1 is closely attached to the photosensitive adhesive coating on the ceramic hand mold;

[0023] S5-5. Perform ultraviolet light exposure;

[0024] S5-6. Stop the vacuum adsorption, open the transparent top cover, and take out the ceramic hand mold.

[0025] Furthermore, in step S5-5, the lamp beads of the lighting device for exposure are three-dimensionally distributed, and the shape is the same as that of the ceramic hand mold, so that the exposure energy of the photosensitive glue coating is the same.

[0026] Furthermore, the method further includes the following steps:

[0027] S7. Dry the ceramic hand mold with micro-textures after being processed in step S6.

[0028] The present invention also provides a ceramic hand mold with micro-textures, which is manufactured by the manufacturing method of the above-mentioned ceramic hand mold with micro-textures.

[0029] Beneficial effects:

[0030] The present invention provides a manufacturing method of a ceramic hand mold with micro-textures, including a self-made and original light-shielding jig, using a self-made and original hand mold screening jig to screen ceramic hand molds, successively adding an adhesion-promoting layer and a photosensitive glue coating on the surface of the screened qualified ceramic hand molds, closely attaching the light-shielding jig to the photosensitive glue coating, and through ultraviolet exposure, curing the unshielded part of the photosensitive glue coating. The part that remains uncured due to being shielded forms a micro-texture structure after film separation and cleaning, and thus a ceramic hand mold with micro-textures can be obtained.

[0031] In the manufacturing method of the ceramic hand mold with micro-textures provided by the present invention, using a self-made and original hand mold screening jig to screen ceramic hand molds provides a new method for screening ceramic hand molds. It not only has simple operation steps, but also accurately realizes that the screened qualified ceramic hand molds do not exceed the designed process allowable range compared with the target hand mold; through screen printing technology, a self-made and original light-shielding jig is made, and a micro-texture light-shielding jig with a fineness reaching the micron level can be obtained; in the preferred scheme, by cooperating the light-shielding jig with a self-made and original fitting device, the vacuum adsorption method is used to realize closely attaching the light-shielding jig to the photosensitive glue coating, overcoming the technical problem that it is difficult to closely attach a planar light-shielding jig to the complex 3D curved surface of the ceramic hand mold, and providing a brand-new manufacturing method for how to manufacture a ceramic hand mold with micro-textures. Description of the drawings

[0032] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to the specific embodiments of the present invention in conjunction with the drawings.

[0033] Figure 1 It is a flowchart for manufacturing a ceramic hand mold with micro-textures of the present invention;

[0034] Figure 2 It is the pattern of the light-shielding jig in the embodiment of the present invention;

[0035] Figure 3Stereogram of the hand mold screening fixture provided by the present invention;

[0036] Figure 4 Stereogram of the base of the laminating device provided by the present invention;

[0037] Figure 5 Stereogram of the transparent top cover of the laminating device provided by the present invention. Detailed implementation manners

[0038] To describe in detail the technical content, achieved objectives and effects of the present invention, the following is described in conjunction with the implementation manners.

[0039] Example 1

[0040] As Figure 1 shown, the present invention provides a manufacturing method of a ceramic hand mold with micro-textures, including the following manufacturing steps:

[0041] S1. Fabricate a light-shielding fixture with micro-textures;

[0042] S2. Screen ceramic hand molds;

[0043] S3. Add an adhesion-promoting layer to the surface of the screened ceramic hand molds;

[0044] S4. Add a photosensitive adhesive coating to the surface of the adhesion-promoting layer of the ceramic hand molds prepared in step S3;

[0045] S5. Closely attach the light-shielding fixture described in step S1 to the photosensitive adhesive coating of the ceramic hand molds, and through ultraviolet exposure, the unshielded part of the photosensitive adhesive coating is cured;

[0046] S6. Separate the film and clean the separated ceramic hand molds to remove the uncured part of the photosensitive adhesive coating, thereby obtaining a ceramic hand mold with micro-textures.

[0047] In the manufacturing method of the ceramic hand mold with micro-textures provided by the present invention, a self-developed and original hand mold screening fixture is used to screen ceramic hand molds, providing a new method for screening ceramic hand molds. The operation steps are not only simple, but also accurately achieve that the screened qualified ceramic hand molds do not exceed the designed process tolerance range compared with the target hand molds; through screen printing technology, a self-developed and original light-shielding fixture is fabricated, and a micro-texture light-shielding fixture with a fineness reaching the micron level can be obtained; in the preferred solution, by cooperating the light-shielding fixture with a self-developed and original laminating device, the vacuum adsorption method is used to closely attach the light-shielding fixture to the photosensitive adhesive coating, overcoming the technical problem that it is difficult to closely attach a flat light-shielding fixture to the complex 3D curved surface of the ceramic hand mold, and providing a brand-new manufacturing method for manufacturing a ceramic hand mold with micro-textures.

[0048] It should be noted that in this application, micro-texture refers to the basic lines that make up the texture and reach the micron level; the target hand mold refers to, according to actual needs, by designing a predetermined standard hand mold, various types and sizes of standard hand molds can be designed according to different genders and ages to meet market demands; the process allowable range refers to that, compared with the designed predetermined standard hand mold, that is, the target hand mold, there will inevitably be a certain error in shape or size in the actually produced hand mold, and the range within which this error can be accepted.

[0049] In a specific implementation manner, screen printing technology can be applied to manufacture the light-shielding jig with micro-texture in step S1, such as Figure 2 shown. Specifically, the graphic shape is designed according to the required micro-texture pattern. The micro-texture pattern can specifically be several stripes with a width of 1um - 100um and a gap interval of 1um - 100um. Of course, several stripes can also be replaced by curved lines, or various patterns composed of several stripes and several curved lines. The basic lines that make up the pattern need to meet the micron level to meet the requirements for manufacturing micro-texture.

[0050] In this embodiment, the light-shielding jig includes a transparent substrate as a carrier and an opaque part for pattern design. Specifically, the transparent substrate can be a flexible material such as PU, TPU, TPE, or silicone, and the opaque part can be ink. The shape designed for the ink is the micro-texture on the surface of the final ceramic hand mold. The transparent flexible material serves as the carrier of the ink, and its thickness is preferably 100um - 200um. If the thickness is insufficient, it is easy to break when the light-shielding jig is closely attached to the photosensitive glue coating in the subsequent step S5; if the flexible new material is too thick, it will increase the difficulty of closely attaching the light-shielding jig to the photosensitive glue coating in the subsequent step S5, and even it is difficult to achieve a tight fit.

[0051] In a specific implementation manner, the step of screening the ceramic hand mold by the hand mold screening jig in step S2 further includes the following steps: S2-1, putting the ceramic hand mold to be screened into the inner cavity with the shape of the target hand mold of the hand mold screening jig. If it can be completely put into the inner cavity, the ceramic hand mold to be screened is marked as qualified, otherwise it is marked as unqualified. Due to the manufacturing process, there will inevitably be deviations in the size of each ceramic hand mold. The process of transferring micro-texture has strict requirements on the size of the hand mold. Because unqualified ceramic hand molds cannot be put into the first cavity of the base in the fitting device, the light-shielding jig cannot be closely attached to the photosensitive glue coating in step 5. This requires being able to screen out hand molds within a certain allowable deviation range. Such as Figure 3 shown, the hand mold screening jig contains an inner cavity with the shape of the target hand mold. After the design of the hand mold screening jig is completed, the hand mold screening jig can be manufactured by mechanical processing.

[0052] In this embodiment, the size of the inner cavity of the hand mold screening fixture is larger than that of the target hand mold, and the increased size does not exceed 2 mm. Specifically, the inner cavity of the hand mold screening fixture is a three-dimensional cavity structure, geometrically similar to the outer contour of the target hand mold, and its inner surface is generated by the principle of normal equidistant offset, ensuring that there is always a 2-mm unilateral clearance between each inner wall surface of the cavity and the corresponding outer surface of the target hand mold. The mathematical definition of this cavity can be expressed as an equidistant surface formed by uniformly expanding the outer curved surface of the target hand mold by 2 mm along all normal directions, thereby forming a global equidistant containment relationship in three-dimensional space.

[0053] In this embodiment, the material of the tackifying layer in step S3 can be one or several of rosin resins, polyterpene resins, petroleum resins, and phenolic resins, and the thickness is 20-200 μm. Rosin resins, polyterpene resins, petroleum resins, and phenolic resins are commonly used tackifiers with stable performance and easy availability. In this embodiment, a bottom coating is first formed on the surface of the ceramic hand mold by spraying, and then a tackifying layer is formed by baking (process parameters: temperature 70°C; time 30 minutes).

[0054] In this embodiment, a laminating device is used to closely laminate the light-shielding fixture on the photosensitive adhesive coating of the ceramic hand mold. As shown in Figure 4 and Figure 5 , the laminating device includes a base and a transparent top cover. The base is recessed with a first cavity that accommodates half of the ceramic hand mold, and the bottom of the recess is provided with suction holes. The transparent top cover is recessed with a second cavity that accommodates the other half of the ceramic hand mold. The first cavity and the second cavity are matched to form a sealed space that can accommodate the entire ceramic hand mold.

[0055] In this embodiment, the size of the sealed space is larger than that of the target hand mold, and the increased size does not exceed 5 mm. It should be noted that the sealed space formed after the base and the transparent top cover of the laminating device are closed is a three-dimensional cavity structure. The first cavity structure of the base is geometrically similar to the outer contour of the target hand mold, and its inner surface is generated by the principle of normal equidistant offset, ensuring that there is always a 5-mm unilateral clearance between each inner wall surface of the first cavity and the corresponding outer surface of the target hand mold. The second cavity of the transparent top cover can be geometrically similar to the outer contour of the target hand mold or other shapes. It is only necessary to ensure that after the light-shielding fixture is installed in the second cavity, it can be buckled with the base on which the hand mold to be transferred is placed to form a sealed space that meets the requirements.

[0056] In this embodiment, step S5 further includes the following steps:

[0057] S5-1. Fix the light-shielding fixture on the transparent top cover;

[0058] S5-2. Place the ceramic hand mold processed in step S4 into the first cavity;

[0059] S5-3. Cover the transparent top cover;

[0060] S5-4. Use the vacuum adsorption method to exhaust the fitting device through the air suction holes, so that the light-shielding jig in step S1 is closely attached to the photosensitive adhesive coating on the ceramic hand mold;

[0061] It should be noted that the air suction holes provided in the recess of the base can be one or more, and the shape is not limited. Preferably, they are round holes. The air suction holes need to cooperate with a vacuum pumping device to exhaust the fitting device. In this embodiment, it is sufficient to achieve a vacuum degree of -40mp to -100mp in the closed space inside the fitting device, so as to closely attach the light-shielding jig to the photosensitive adhesive coating without being too tightly attached to make it difficult to separate the two in subsequent steps.

[0062] S5-5. Perform ultraviolet light exposure;

[0063] Specifically, the lamp beads of the lighting device for exposure can be three-dimensionally distributed, and the shape is the same as that of the ceramic hand mold, so that the exposure energy of the photosensitive adhesive coating is the same. In the actual process of manufacturing a micro-textured ceramic hand mold, because the ceramic hand mold is a 3D three-dimensional structure, when the light source is planar and the relative position with the ceramic hand mold is fixed, the exposure energy received by the outer surface of the photosensitive adhesive coating attached to the ceramic hand mold is uneven, ultimately resulting in an unsatisfactory micro-texture structure. To ensure that the exposure energy on the entire surface of the ceramic hand mold remains between 80 - 120mj, the present invention provides a new lighting device, in which the lamp beads as the smallest unit of the light source are three-dimensionally distributed, the shape is the same as that of the ceramic hand mold, and the size can be slightly larger than that of the ceramic hand mold, ensuring that the inner surface formed by multiple lamp beads and the corresponding outer surface of the ceramic hand mold always maintain the same distance during exposure, and achieving the same exposure energy for the photosensitive adhesive coating.

[0064] S5-6. Stop vacuum adsorption, open the transparent top cover, and take out the ceramic hand mold.

[0065] It should be noted that in the above steps S5-1 to S5-6, only the micro-texture transfer of one side of the ceramic hand mold can be achieved. By making a fitting device assembly, including two fitting devices, and each base of the two fitting devices is provided with a cavity for accommodating half of the ceramic hand mold. The two fitting devices are used in cooperation to enable the two sides of the ceramic hand mold to be transferred into a micro-texture structure.

[0066] In this embodiment, the thickness of the photosensitive adhesive coating is between 3 - 10 μm. After separation, the ceramic hand mold can be cleaned successively with a cleaning agent and then with water. The main components of the cleaning agent are isopropyl alcohol and alcohol. The specific method is as follows: Use a spraying device filled with the cleaning agent to spray the exposed ceramic hand mold, wash off the photosensitive adhesive on the uncured microstructural shape, thereby forming regular microstructural grooves. The depth of the grooves is determined by the thickness of the coated photosensitive adhesive, and the width is determined by the screen-printed microstructural shape.

[0067] In a specific implementation manner, it further includes the step: S7. Dry the ceramic hand mold with micro-textures after being processed in step S6. The advantage of this operation is that it can quickly evaporate the water on the ceramic hand mold, preventing water from absorbing some impurities such as dust and dirt after contacting the air, which may affect the quality of the micro-textures on the ceramic hand mold. When micro-textures need to be transferred to both sides of the ceramic hand mold, the drying operation facilitates the transfer process on the other side of the ceramic hand mold, improving the overall production efficiency.

[0068] Embodiment 2

[0069] The present invention also provides a ceramic hand mold with micro-textures, which is manufactured by the manufacturing method of the above-mentioned ceramic hand mold with micro-textures.

[0070] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A method for manufacturing a ceramic hand mold with micro texture, characterized in that: The manufacturing steps include: S1. Making a light-shielding fixture with micro texture; S2, screening ceramic hand models; S3, adding an adhesion-enhancing layer to the surface of the screened ceramic hand mold; S4, adding a photosensitive adhesive coating on the surface of the ceramic hand mold adhesion-enhancing layer prepared in step S3; S5, closely attaching the light-shielding fixture in step S1 to the photosensitive adhesive coating of the ceramic hand model, and curing the unshielded portion of the photosensitive adhesive coating by ultraviolet exposure; S6, separating the films and cleaning the separated ceramic hand mold to remove the uncured photosensitive adhesive coating, thereby obtaining a ceramic hand mold with micro texture.

2. The method for manufacturing a ceramic hand mold with micro texture according to claim 1, characterized in that: In the step S1, the shading fixture with micro texture is made by using the silk screen printing technology, wherein the shape of the graphic is designed according to the required micro texture pattern, and the micro texture pattern is specifically a plurality of stripes with a width of 1um-100um and a gap interval of 1um-100um.

3. The method for manufacturing a ceramic hand mold with micro texture according to claim 2, characterized in that: In the silk-screen printing technology, the thickness of the transparent flexible material is 100um-200um.

4. The method for manufacturing a ceramic hand mold with micro texture according to claim 1, characterized in that: The step S2 of screening the ceramic hand molds by the hand mold screening jig also includes the following steps: S2-1. Place the ceramic hand model to be screened into the inner cavity of the hand model screening fixture having the shape of the target hand model. If it can be completely placed in the inner cavity, the ceramic hand model to be screened is marked as qualified, otherwise it is marked as unqualified. The size of the inner cavity is larger than the size of the target hand model and the larger size does not exceed 2mm.

5. The method for manufacturing a ceramic hand mold with micro texture according to claim 1, characterized in that: In the step S3, the material of the adhesion-enhancing layer is one or more of rosin resin, polyterpene resin, petroleum resin, and phenolic resin, and the thickness is 20-200 um.

6. The method for manufacturing a ceramic hand mold with micro texture according to claim 1, characterized in that: In step S5, a laminating device is used to tightly fit the shading jig onto the photosensitive adhesive coating of the ceramic hand mold. The laminating device includes a base and a transparent top cover. The base is recessed with a first cavity for accommodating half of the ceramic hand mold, and an air suction hole is provided at the bottom of the recess. The transparent top cover is recessed with a second cavity for accommodating the other half of the ceramic hand mold. The first cavity and the second cavity are matched to form a closed space for accommodating the entire ceramic hand mold.

7. The method for manufacturing a ceramic hand mold with micro texture according to claim 6, characterized in that: The step S5 also includes the following steps: S5-1, fixing the light-shielding fixture on the transparent top cover; S5-2, placing the ceramic hand mold processed in step S4 into the first cavity; S5-3, putting on the transparent top cover; S5-4, using a vacuum adsorption method to exhaust the laminating device through the air suction hole, so that the light shielding fixture in step S1 is closely attached to the photosensitive adhesive coating of the ceramic hand mold; S5-5, using ultraviolet light exposure; S5-6, stop vacuum adsorption, open the transparent top cover, and take out the ceramic hand model.

8. The method for manufacturing a ceramic hand mold with micro texture according to claim 7, characterized in that: In step S5-5, the lamp beads of the lighting equipment used for exposure are distributed in three dimensions and have the same shape as the ceramic hand model, so that the exposure energy of the photosensitive adhesive coating is the same.

9. The method for manufacturing a ceramic hand mold with micro texture according to claim 1, characterized in that: The following steps are also included: S7, drying the ceramic hand mold with micro texture processed in step S6.

10. A ceramic hand mold with micro texture, characterized in that: The ceramic hand mold with micro texture is manufactured by the manufacturing method of the ceramic hand mold with micro texture according to any one of claims 1-9.

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