Processing method of imitated crystal ornament

Abstract

The invention discloses an imitated crystal ornament processing method, which is characterized in that an ornament with good light transmittance is made of an acrylic material, and the method comprises the following steps: S1, carrying out injection molding on the acrylic material to form an acrylic body with a specific shape; s2, a water gap formed by injection molding of the acrylic body is preliminarily cut through laser cutting equipment, and allowance is reserved; s3, CNC milling is conducted on the water gap reserved part obtained after laser cutting, and allowance is reserved; s4, performing a coating process on the outer surface of the acrylic body, and forming a coating structure on the surface of the acrylic body; s5, CNC grinding is conducted on the water gap allowance part and the whole side edge in the step S3, and water is added for cleaning in the grinding process; and S6, the acrylic body subjected to CNC grinding is manually polished. The imitation crystal product made of the acrylic material is manufactured through the steps to replace a glass material, and the manufacturing method has the characteristics of low production cost, high yield and the like.

Description

Technical Field

[0001] The invention relates to the field of imitation crystal ornament processing, in particular to a method for processing imitation crystal ornaments. Background Art

[0002] At present, the imitation crystal products on the market are all made of glass materials. However, due to the high production cost of glass materials and the fact that glass imitation crystal products are easily worn during use, the surface glossiness is reduced, affecting the overall visual effect. In addition, acrylic materials also have good light transmittance. Compared with glass materials, they have lower production costs and are not easy to wear. However, due to the particularity of acrylic materials, traditional glass material processing methods can no longer be used on acrylic materials. In the production process of acrylic imitation crystal products, nozzle treatment is an important link. Improper nozzle treatment will affect the overall surface smoothness, and a single nozzle treatment process is difficult to perfectly process the nozzle on the surface of the acrylic body. For example, if the laser directly cuts the acrylic nozzle after injection molding, a flange will be left at the bottom, causing damage to the acrylic body, and if the tool directly cuts the acrylic nozzle, it will cause the acrylic body to burst.

[0003] Therefore, how to better handle the water outlet problem so that acrylic imitation crystal jewelry can achieve a smooth surface and good light transmittance is a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a method for processing imitation crystal ornaments to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Provided is a method for processing imitation crystal ornaments, which uses acrylic material to make ornaments with good light transmittance, and the method comprises the following steps:

[0007] S1, injection molding the acrylic raw material to form a polyhedron-shaped acrylic body;

[0008] S2. Use laser cutting equipment to preliminarily cut the nozzle formed by injection molding of the acrylic body and reserve a margin;

[0009] S3, CNC milling the reserved part of the nozzle after laser cutting and leaving a margin;

[0010] S4, performing a coating process on the bottom surface of the acrylic body to form a reflective coating structure;

[0011] S5, CNC grinding the remaining part of the nozzle in step S3, removing the remaining part of the nozzle by rotating sandpaper, and washing the grinding position with clean water during the grinding process;

[0012] S6. Manually polish the CNC-polished acrylic body to remove surface stains and polishing marks, so that the acrylic body reaches a light transmittance of more than 90%.

[0013] Furthermore, the coating process includes:

[0014] S4.1. Coating a treatment agent layer for enhancing surface adhesion on the bottom surface of the acrylic body;

[0015] S4.2, coating a primer layer as a base on the treating agent layer;

[0016] S4.3, coating an aluminum film layer for reflecting light on the primer layer;

[0017] S4.4. Apply a mid-coat layer for providing color on the aluminum film layer.

[0018] Furthermore, the coating process also includes:

[0019] S4.5. Laser engrave the aluminum film layer and the middle paint layer;

[0020] S4.6, printing ink layer at the laser engraving position;

[0021] S4.7. Apply the outermost topcoat layer.

[0022] Furthermore, the CNC grinding in step S6 includes coarse grinding and fine grinding. The coarse grinding is performed before the fine grinding. The coarse grinding uses sandpaper with a size of 1500 to 2500 meshes, and the fine grinding uses sandpaper with a size of 4000 to 6000 meshes.

[0023] Furthermore, there are two nozzles. In the step S5, after polishing one nozzle margin, the acrylic body is rotated and the horizontal position of the acrylic body is adjusted to polish another nozzle margin.

[0024] Furthermore, in the step S5, all side surfaces of the acrylic body are CNC polished, and after polishing one side surface, the acrylic body is rotated and the horizontal position of the acrylic body is adjusted to polish the next side surface.

[0025] Furthermore, in the step S5, the rough grinding is performed twice, and the acrylic body completes one rotation between the two rough grindings.

[0026] Furthermore, the clean water in step S5 is purified water.

[0027] Furthermore, in step S2, the reserved margin length of the nozzle after laser cutting ranges from 3 mm to 20 mm.

[0028] Furthermore, in step S4, the reserved margin length of the nozzle after CNC milling ranges from 0.1 mm to 2 mm.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The invention provides a method for processing an imitation crystal ornament. The nozzle part of an acrylic body after injection molding is laser cut. After the laser cutting, a 10 mm portion of the nozzle is reserved, which effectively avoids the influence of the flanging formed by the laser cutting on the acrylic body. Then, the 10 mm reserved nozzle is CNC milled. After the CNC milling, a portion of the nozzle remains. After the acrylic surface is covered with a coating structure, the remaining portion of the nozzle and the side surface are CNC polished. After multiple processing steps, the nozzle is completely eliminated, so that the acrylic body is more beautiful. After the complete processing flow, the imitation crystal ornament is made of acrylic material instead of glass material, the production cost of the imitation crystal ornament is reduced, and the imitation crystal ornament has better wear resistance and drop resistance. The invention has the characteristics of low production cost, high yield rate and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an overall structural diagram of an acrylic body of one of the products of the present invention;

[0032] Figure 2 A top view of an acrylic body of one of the products of the present invention after laser cutting;

[0033] Figure 3 A top view of an acrylic body of one of the products of the present invention after CNC milling;

[0034] Figure 4 A schematic structural diagram of an embodiment of the coating structure of the present invention;

[0035] Figure 5 A schematic structural diagram of an embodiment of the coating structure of the present invention;

[0036] Figure 6 It is a processing flow chart of the present invention;

[0037] The markings of the components in the accompanying drawings are as follows: 1. treatment agent layer; 2. primer layer; 3. aluminum film layer; 4. mid-coat layer; 5. ink layer; 6. topcoat layer; 7. acrylic body; 8. sprue. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is to say, in some embodiments of the present application, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0039] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, in the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present application. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0041] In order to further understand the content, features and effects of the invention of the present application, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0042] See also Figures 1 to 6 The present invention provides a method for processing imitation crystal ornaments, which is made by processing acrylic material instead of glass material to make imitation crystal ornaments. The following provides an embodiment of processing imitation crystal ornaments of a cushion button model, and the processing method includes the following steps:

[0043] Before injection molding, prepare the acrylic material and bake it to a liquid state.

[0044] S1, injecting the baked acrylic raw material into an acrylic body 7, and the shape of the acrylic body 7 can be designed according to the requirements during the injection molding process;

[0045] S2. After the injection molding is completed, a nozzle 8 will be left on the surface of the acrylic body 7. The acrylic body 7 after injection molding is cut by laser cutting equipment. The reserved margin range of the nozzle 8 after laser cutting is 3mm-20mm. In this example, please refer to Figure 2 , use a laser cutter to cut the nozzle 8 in the first step. The parameters set for the laser cutter are: power: 100%, cutting speed: 20±5mm per second, cutting height: 15±5um, cutting time: 10±3 seconds, please refer to Figure 2 , after cutting, the length of the acrylic body 7 is X1=50.6mm, the width is Y1=21.7mm, and the length of the remaining part of the nozzle 8 on both sides of the acrylic body 7 is 10mm;

[0046] S3. After laser cutting, the second step of cutting is performed by CNC to mill the remaining part of the nozzle 8 to control the length of the nozzle 8 and pave the way for subsequent grinding. The remaining range of the nozzle 8 after CNC milling is 0.1mm-2mm. In this embodiment, please refer to Figure 3 After milling, the length of the acrylic body 7 is X2=40.7mm, and the width is Y2=21.6mm, so that the outer surface of the acrylic body 7 is initially smooth and flat, but at this time, the nozzle 8 still has a margin of 0.5mm;

[0047] S4, after the outer surface of the acrylic body 7 is smooth and flat, the outer surface of the acrylic body 7 is electroplated, sprayed and / or laser engraved to form a coating structure on the surface of the acrylic body 7. In this embodiment:

[0048] The acrylic body 7 is a polygonal structure, with a plurality of irregular surfaces of different sizes distributed on the outside. A coating structure is formed on the upper surface of the acrylic body 7. In the implementation process of the coating structure, the nozzle 8 is partially covered, so that the decoration can produce a crystal-like effect. An implementation method of the coating structure is provided below:

[0049] Structure Figure 5 As shown, the coating structure comprises, from the inside to the outside, a treating agent layer 1 for enhancing surface adhesion, a primer layer 2 as a base, an aluminum film layer 3 for reflecting light, a middle paint layer 4 for providing color, an ink layer 5 for providing contrast, and a top paint layer 6 for providing protection. The treating agent layer 1 is attached to the surface of the acrylic body 7, and the thickness of the treating agent layer 1 sprayed on the surface of the acrylic body 7 is 8-15um, the thickness of the sprayed primer layer 2 is 20-30um, the thickness of the aluminum film layer is 40-70um, the thickness of the sprayed middle paint layer 4 is 6-10um, the thickness of the sprayed ink layer 5 is 10-14um, and the thickness of the sprayed top paint layer 6 is 18-25um.

[0050] The main production process is to spray the treatment agent layer 1 on the surface of the acrylic body 7 - spray the primer layer 2 - evaporate the coating (aluminum film layer 3) - spray the middle paint layer 4 - laser carving - spray the ink layer 5 - spray the top paint layer 6; first spray the treatment agent layer 1 on the surface of the acrylic body 7. Since the acrylic surface has low adhesion and cannot be directly sprayed with paint, the treatment agent layer 1 is first sprayed on the surface of the acrylic body 7. The treatment agent layer 1 can enhance the adhesion of the surface of the acrylic body 7. Then, the primer layer 2 is sprayed on the treatment agent layer 1 to improve the adhesion of the electroplating layer. The primer layer 2 helps to form a uniform and smooth surface, providing a more ideal base for subsequent coating and coloring steps. Then, evaporation coating is performed, and the plated film is an aluminum film, which increases the metallic texture and reflectivity. Finally, the middle paint layer 4 is sprayed. The color of the middle paint layer 4 can be adjusted according to the personalized needs of the customer. It is sprayed between the primer layer 2 and the coating to form an intermediate layer with rich colors. This step not only enriches the color selection of the acrylic body 7, but also makes the acrylic body 7 more layered and three-dimensional. The evaporation coating can reflect the color of the middle paint layer 4 and solve the problem of seeing the pitting of the middle paint layer 4. It looks flatter and smoother from the front. Then the previous middle paint layer 4 and aluminum film layer 3 can be laser engraved. The laser engraving process needs to carve through the plating layer, and different patterns or / and texts can be designed. After laser engraving, printing is performed to form a layer of white ink layer 5. The white printing layer may be used to provide contrast, enhance visual effects or meet specific design requirements. Printing on the basis of laser engraving can further enrich the visual effect of the product. Finally, the topcoat layer 6 is sprayed on the outermost layer. The topcoat layer 6 can protect all the previous paint layers and plating layers. The primer layer 2, the middle paint layer 4, and the topcoat layer 6 are all UV paints. UV paints not only have excellent protective properties, but also provide gloss and weather resistance. Through ultraviolet curing, UV paint can dry quickly and form a solid protective layer to prevent scratches, fading and corrosion.

[0051] like Figure 4 As shown, in the above implementation of the coating structure, the three processes of laser engraving, spraying the ink layer 5 and spraying the topcoat layer 6 can also be eliminated.

[0052] S5, after the acrylic body 7 is electroplated, sprayed and / or laser engraved, a coating structure is formed on the surface of the acrylic body 7, and then the side of the acrylic body 7 and the sprue 8 remaining in step S3 are CNC polished. Since the side of the acrylic body 7 is not an arc, the acrylic body 7 needs to be moved accurately, so CNC polishing technology is used. The CNC polishing process can control the accuracy. The CNC polishing process includes coarse grinding and fine grinding. The coating structure is firstly coarsely ground. The sandpaper model used for coarse grinding is 1500 to 2500 mesh. The number of revolutions of the sandpaper during coarse grinding is 3000-4000 revolutions per minute. The coarse grinding process is repeated twice. Since more debris is generated on the surface of the acrylic body 7 during the first coarse grinding, it is difficult to wash it off during the first coarse grinding process. Through rotation and secondary rough grinding, the debris can be washed away during the rotation process to improve the grinding efficiency and quality. Therefore, under the comprehensive consideration of work efficiency and yield rate, a two-pass rough grinding process is adopted. After the two passes of rough grinding, fine grinding is performed. The sandpaper model used for fine grinding is 4000 to 6000 mesh. The number of revolutions of the sandpaper during fine grinding is 4000-6000 revolutions per minute, the grinding height is 10±3um, and the time is 300±20 seconds. During the CNC grinding process, pure water is used to clean the grinding position on the surface of the acrylic body 7. Pure water will not corrode the acrylic body 7 and the coating structure, and it also prevents impurities in the water from scratching the acrylic body 7 and the coating structure. After grinding, the length of the acrylic body 7 is X3=40.2mm, and the width is Y3=21.5mm.

[0053] Specifically, during the CNC grinding process, the grinding surface of the sandpaper is placed vertically in the machine, the back side is fixed on the horizontal rotating shaft, the grinding surface faces the acrylic body 7, the acrylic body 7 is fixed on a vertical rotating shaft that can be away from and close to the sandpaper, the sandpaper grinding surface is close to the side surface of the acrylic body 7, the sandpaper rotates through the horizontal rotating shaft, the acrylic body 7 moves horizontally to contact the sandpaper, and the vertical rotating shaft rotates slowly. In this embodiment, there are two water inlets 8, which are respectively on the two sides of the acrylic body 7. During the grinding process, the sandpaper grinding surface grinds all the sides of the acrylic body 7 in turn. In the rough grinding stage, the acrylic body 7 rotates twice, and in the fine grinding stage, the acrylic body 7 rotates once. In the process of grinding, when the grinding side is switched, the acrylic body 7 moves in the horizontal direction, and the distance between the side surface of the acrylic body 7 and the sandpaper is adjusted to ensure that each side of the acrylic body 7 is in complete contact with the sandpaper grinding surface.

[0054] S6. Finally, the acrylic body 7 after CNC grinding is manually polished to eliminate grinding marks, remove stains and perform final surface smoothing treatment, followed by testing. The finished product must achieve a light transmittance of more than 90%. Those that meet the test standards are put into storage, and those that do not meet the standards are collected and processed as waste. The above completes the processing of acrylic imitation crystal jewelry.

[0055] Through the above steps, the acrylic material is processed into imitation crystal ornaments, which achieve a light transmittance of more than 90%, replace the original glass material, reduce the production cost, and have better wear resistance and drop resistance.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for processing imitation crystal ornaments, using acrylic material to make ornaments with good light transmittance, characterized in that: The method comprises the following steps: S1, injection molding the acrylic raw material to form a polyhedral acrylic body (7); S2, using laser cutting equipment to preliminarily cut the nozzle (8) formed by injection molding of the acrylic body (7) and leave a margin; S3, CNC milling the reserved part of the nozzle (8) after laser cutting and leaving a margin; S4, performing a coating process on the bottom surface of the acrylic body (7) to form a reflective coating structure; S5, CNC grinding the remaining part of the water inlet (8) in step S3, removing the remaining part of the water inlet (8) by rotating sandpaper grinding, and washing the grinding position with clean water during the grinding process; S6. Manually polish the CNC-polished acrylic body (7) to remove surface stains and polishing marks, so that the acrylic body (7) reaches a light transmittance of more than 90%.

2. A method for processing imitation crystal jewelry according to claim 1, characterized in that: The coating process includes: S4.

1. coating a treatment agent layer (1) for enhancing surface adhesion on the bottom surface of the acrylic body (7); S4.2, coating a primer layer (2) as a base on the treating agent layer (1); S4.3, coating an aluminum film layer (3) for reflecting light on the primer layer (2); S4.

4. Apply a middle paint layer (4) for providing color on the aluminum film layer (3).

3. A method for processing imitation crystal jewelry according to claim 2, characterized in that: The coating process also includes: S4.5, laser engraving the aluminum film layer (3) and the intermediate paint layer (4); S4.6, printing an ink layer (5) at the laser engraving position; S4.

7. Apply a topcoat layer (6) located on the outermost layer.

4. The method for processing imitation crystal jewelry according to claim 1, characterized in that: The CNC grinding in step S6 includes coarse grinding and fine grinding. The coarse grinding is performed before the fine grinding. The coarse grinding uses sandpaper with a size of 1500 to 2500 meshes, and the fine grinding uses sandpaper with a size of 4000 to 6000 meshes.

5. A method for processing imitation crystal ornaments according to claim 4, characterized in that: There are two nozzles (8). In step S5, after grinding the remaining portion of one nozzle (8), the acrylic body (7) is rotated and the horizontal position of the acrylic body (7) is adjusted to grind the remaining portion of the other nozzle (8).

6. A method for processing imitation crystal ornaments according to claim 5, characterized in that: In the step S5, all side surfaces of the acrylic body (7) are CNC polished. After polishing one side surface, the acrylic body (7) is rotated and the horizontal position of the acrylic body (7) is adjusted to polish the next side surface.

7. A method for processing imitation crystal ornaments according to claim 5 or 6, characterized in that: In the step S5, the rough grinding is performed twice, and the acrylic body (7) completes one rotation between the two rough grindings.

8. The method for processing imitation crystal ornaments according to claim 1, characterized in that: The clean water in step S5 is purified water.

9. The method for processing imitation crystal ornaments according to claim 1, characterized in that: In the step S2, the reserved margin length of the nozzle (8) after laser cutting ranges from 3 mm to 20 mm.

10. The method for processing imitation crystal ornaments according to claim 1, characterized in that: In the step S4, the reserved margin length of the nozzle (8) after CNC milling is in the range of 0.1mm-2mm.

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