A processing technology for plastic mold and application thereof

Abstract

This invention relates to the field of injection molding technology and discloses a plastic mold processing technology and its application. It includes the following steps: (1) Structural optimization of the plastic mold: disassembling the corner forming parts of the plastic mold into multiple splicing parts; (2) Coating treatment of the plastic mold: applying a coating to the surface of the plastic mold after structural optimization in step (1) to form a nano-coating. This invention, by optimizing the structure of the plastic mold and applying a coating to its surface, ensures that the mold parts are wear-resistant and corrosion-resistant during long-term injection molding production, reducing the cost of mold repair and spare parts replacement, and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically to a plastic mold processing technology and its application. Background Technology

[0002] With the development of technology, plastic products are increasingly widely used in various fields, and the performance requirements for plastic molds are also becoming increasingly stringent. Especially in high-end fields such as high-performance integrated circuits (CPUs), highly corrosive and abrasion-resistant plastic materials are required. While ensuring that mold parts are not corroded or worn by these materials, it is also necessary to ensure that the mold parts have sufficient precision to meet the high precision requirements (±0.005mm) of high-performance integrated circuits. Therefore, developing an efficient and low-cost plastic mold process for corrosion-resistant and abrasion-resistant plastic materials is of significant practical importance. However, when mass-producing products using injection molding of highly corrosive and abrasion-resistant plastic materials (mainly containing glass fiber and mineral fiber additives), mold parts are prone to wear and corrosion. Current methods use high-hardness materials for the mold parts, but this still requires frequent parts replacement, greatly impacting production efficiency and increasing mold repair costs.

[0003] Therefore, it is necessary to develop a plastic mold processing technology and its application to enable molded parts to have wear-resistant and corrosion-resistant properties, ensure that mold parts meet high precision requirements, reduce production costs, and further improve product quality. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a processing technology for plastic molds and its application, which enables the molded parts to possess wear-resistant and corrosion-resistant properties, ensuring that the mold parts meet high precision requirements, while simultaneously reducing production costs and further improving product quality.

[0005] The inventive concept of this invention:

[0006] This invention provides a processing technology for plastic molds. The process is simple and practical. First, the structure of the corner forming parts of the plastic mold is optimized by breaking down the corner forming parts into multiple reasonable geometric shapes, thereby eliminating the sharp corner design of the parts and reducing the friction between the parts and the plastic. Breaking down the corner forming parts also facilitates the separation of corner gas trapping locations, thereby further removing corrosive gases from the plastic mold and reducing the contact time between corrosive gases and the plastic mold parts. In addition, by improving the part material, high-hardness and high-strength steel is used, and a coating treatment is applied to the surface of the parts to form a nano-coating, creating a hard, wear-resistant, and corrosion-resistant protective layer on the part surface, while ensuring the accuracy of the part after coating (controlled within ±0.001mm).

[0007] The first aspect of the present invention provides a processing technology for plastic molds.

[0008] Specifically, it includes the following steps:

[0009] (1) Structural optimization of plastic mold: The corner forming parts of the plastic mold are split into multiple splicing parts;

[0010] (2) Coating treatment of plastic mold: The surface of the plastic mold after structural optimization in step (1) is coated with a paint to form a nano-coating.

[0011] Preferably, in step (1), the shape of the splicing parts is a geometric shape.

[0012] Preferably, the geometric shape includes rectangle, square, trapezoid, pentagon, and hexagon.

[0013] More preferably, the geometric shape includes a rectangle or a square.

[0014] Preferably, in step (1), the material of the splicing parts is ASP60 steel.

[0015] Preferably, in step (2), the nano-coating is a titanium aluminum nitride nano-coating.

[0016] More preferably, the thickness of the titanium aluminum nitride nanocoating is 0.002 to 0.003 mm.

[0017] A second aspect of the present invention provides a plastic mold.

[0018] Specifically, the plastic mold is obtained by a plastic mold processing technology provided by the first party.

[0019] A third aspect of the present invention provides an application of a plastic mold in the field of integrated circuits.

[0020] Preferably, the plastic mold can be used to injection mold highly corrosive and abrasion-prone plastic materials.

[0021] Preferably, the injection speed is 50-100 cm / s. 3 / s.

[0022] More preferably, the injection speed is 100 cm / s. 3 / s, by adjusting the injection speed to improve venting, the friction between the plastic and the plastic mold parts can achieve the optimal balance effect.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] This invention optimizes the structure of the plastic mold and applies a coating to its surface, ensuring that the mold parts are wear-resistant and corrosion-resistant during long-term injection molding production. This reduces the cost of mold repair and spare parts replacement, and improves production efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the corner forming part of the plastic mold in Example 1 broken down into multiple splicing parts;

[0026] Figure 2 This is a schematic diagram of the corner molding parts of the plastic mold in Comparative Example 1, without disassembly.

[0027] Figure 3 This is a corrosion inspection image of the corner molding part of the plastic mold in Example 1, produced 3 months after disassembly.

[0028] Figure 4 Corrosion detection images of corner molding parts of plastic mold 1 produced without disassembly for 3 months;

[0029] Figure 5 The image shows corrosion detection of parts produced 3 months after the plastic mold surface of Example 1 was coated with titanium aluminum nitride.

[0030] Figure 6 For comparison example 2, the corrosion detection image shows the parts produced for 3 months without titanium aluminum nitride coating on the surface of the plastic mold. Detailed Implementation

[0031] To enable those skilled in the art to more clearly understand the technical solutions described in this invention, the following embodiments are provided for illustration. It should be noted that the following embodiments do not constitute a limitation on the scope of protection claimed by this invention.

[0032] Unless otherwise specified, the raw materials, reagents or devices used in the following examples are available from conventional commercial sources or can be obtained by existing known methods.

[0033] Example 1

[0034] A processing technology for plastic molds.

[0035] The corner forming parts of the plastic mold are disassembled into multiple rectangular splicing parts (such as...). Figure 1 As shown), the splicing parts are made of ASP60 steel; then the surface of the plastic mold is coated with titanium aluminum nitride (AlTiN) nano-coating to form a titanium aluminum nitride nano-coating with a thickness of 0.002mm.

[0036] Comparative Example 1

[0037] A processing technique for plastic molds.

[0038] The difference from Example 1 is that the corner molding parts of the plastic mold in Comparative Example 1 are not disassembled (e.g., Figure 2 (As shown).

[0039] Corrosion and wear inspection of plastic mold parts:

[0040] Two groups of parts, namely Example 1 and Comparative Example 1, were manufactured under the same conditions for 3 months, and the corrosion and wear of the parts were observed. Figure 3 As shown, after the corner molding part of the plastic mold in Example 1 was disassembled, the part was not corroded; as Figure 4 As shown, the corner molding parts of the plastic mold in Comparative Example 1 were not disassembled, and the molding parts were severely corroded.

[0041] Comparative Example 2

[0042] A processing technique for plastic molds.

[0043] The difference from Example 1 is that the surface of the plastic mold in Comparative Example 2 is not coated with paint.

[0044] Corrosion and wear inspection of plastic mold parts:

[0045] Two groups of parts, Example 1 and Comparative Example 2, were manufactured under the same conditions for 3 months, and their corrosion and wear were observed. Figure 5 As shown, in Example 1, after the plastic mold was made of ASP60 material and coated with titanium aluminum nitride (AlTiN) nano-coating, the parts were not corroded; Figure 6 As shown, although the plastic mold in Comparative Example 2 used ASP60 material, its molded parts suffered severe corrosion and wear because the surface of the plastic mold was not coated with titanium aluminum nitride (AlTiN) nano-coating.

[0046] Comparative Example 3

[0047] A processing technique for plastic molds.

[0048] The difference from Example 1 is that the surface of the plastic mold in Comparative Example 3 was coated with titanium nitride (TiN) coating.

[0049] Comparative Example 4

[0050] A processing technique for plastic molds.

[0051] The difference from Example 1 is that the surface of the plastic mold in Comparative Example 4 was coated with titanium aluminum nitride (TiAlN) coating.

[0052] Comparative Example 5

[0053] A processing technique for plastic molds.

[0054] The difference from Example 1 is that the surface of the plastic mold in Comparative Example 5 was coated with chromium nitride (GrN) paint.

[0055] Corrosion and wear inspection of plastic mold parts:

[0056] The corrosion and wear of the parts from Examples 1 and Comparative Examples 2-5 were observed after 1 week, 1 month, and 3 months of production under the same conditions. The results are shown in Table 1. Among them, Comparative Example 1 showed severe corrosion and wear. After 3 months of production, the corrosion and wear of Comparative Examples 3 and 4 were more severe than those of Example 1. Although Comparative Example 5 showed good results, its coating cost was too high.

[0057] Table 1 Corrosion and wear of plastic molds in each group after different coating treatments.

[0058]

[0059] Example 2

[0060] A type of plastic mold. The application of plastic molds in the field of integrated circuits.

[0061] The plastic mold was prepared using the processing method of Example 1, and the injection speed was controlled to be 100 cm. 3 / s, highly corrosive and abrasion-prone plastic material is injected into a plastic mold for production. The corrosion and abrasion of the plastic are tested under the same conditions for 1 week, 1 month, and 3 months. The process is repeated only when the injection speed is changed to 50cm. 3 / s、150cm 3 / s and 200cm 3 Corrosion and wear were measured for each group at a rate of 50 cm / s. The results are shown in Table 2, where the injection speed was controlled at 50 cm / s. 3 / s and 100cm 3 / s has good effect, but the injection speed is 100cm 3 / s has a greater advantage in injection cycle time, while the injection speed is 150cm. 3 / s and 200cm 3 At a rate of / s, the higher the injection speed, the more severe the corrosion and wear of the molded parts, indicating that high injection speed can also affect the corrosion resistance and wear resistance of plastic molds.

[0062] Table 2 Corrosion and wear of the plastic mold after production at different injection rates in Example 1.

[0063]

[0064] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, any technical solutions obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concept of the present invention and on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A processing technology for plastic molds, characterized in that, Includes the following steps: (1) Structural optimization of plastic mold: The corner forming parts of the plastic mold are split into multiple splicing parts; (2) Coating treatment of plastic mold: The surface of the plastic mold after structural optimization in step (1) is coated with a paint to form a nano-coating.

2. The processing technology according to claim 1, characterized in that, In step (1), the shape of the splicing parts is a geometric shape.

3. The processing technology according to claim 2, characterized in that, The geometric shapes include rectangles, trapezoids, pentagons, and hexagons.

4. The processing technology according to claim 1, characterized in that, In step (1), the material of the splicing parts is ASP60 steel.

5. The processing technology according to claim 1, characterized in that, In step (2), the nano-coating is a titanium aluminum nitride nano-coating.

6. The processing technology according to claim 5, characterized in that, The thickness of the titanium aluminum nitride nanocoating is 0.002~0.003 mm.

7. A plastic mold, characterized in that, The plastic mold is obtained by the processing technology described in any one of claims 1 to 6.

8. The application of the plastic mold according to claim 7 in the field of integrated circuits.

9. The application according to claim 8, characterized in that, The plastic mold can be used to injection mold highly corrosive and abrasion-prone plastic materials.

10. The application according to claim 9, characterized in that, The injection speed is 50-100 cm / s. 3 / s.

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