Processing method of special-shaped structure product and product thereof

Abstract

The invention relates to a processing method of a special-shaped structure product and the special-shaped structure product. The method comprises the following steps: designing a fusible mold core structure and a casting mold according to a product structure; heating a fusible alloy material to a temperature above a casting temperature, and then slowly casting the fusible alloy material into the mold; the mold core is taken out after being cooled, and a water gap of the mold core is treated and inspected; the mold core is placed in an injection mold, and an injection molding machine is subjected to mold closing and glue injection to form a product; after being taken out, the injection-molded product is put into a hot bath box until the alloy material is completely melted out; taking out the plastic product, washing with water, and drying with hot air after the surface of the plastic product is clean; the method has the beneficial effects that the core loss forming technology is adopted, the core material is the recoverable and reusable fusible metal alloy material, the core is manufactured through a casting mold, the core is put into an injection mold, then injection molding and rubber coating are conducted, and finally the core is heated and melted out; and the molten core material can be recycled.

Description

[Technical field]

[0001] The invention relates to the technical field of product processing and forming, in particular to a processing method for a special-shaped structural product and a product thereof. [Background technology]

[0002] Game consoles are highly praised by young people in today's market. However, the market for game consoles is getting bigger and bigger, and the demand is also increasing. As the requirements for the structural design and appearance of game consoles continue to improve, the game console handles need to be integrally formed. In principle, the curved hollow design of the handles and the complex contour of the inner surface are almost impossible to demold by ordinary injection molding. Traditional processing methods often achieve this in the form of components, that is, first forming separate plastic parts, and then assembling or welding, etc., but this will complicate the processing process.

[0003] The lost core molding technology currently used to process and mold this type of game console handles. The lost core process includes three processes: core molding, injection molding, and core removal. The core material used is a fusible polymer material. However, due to the characteristics of polymer materials, the polymer material recovered after the core is removed (such as in a water bath) cannot be recycled and reused multiple times (the strength of the material will be greatly reduced after multiple cycles of recycling).

[0004] In view of this, it is necessary to provide a processing method of a special-shaped structure product and a product thereof to solve the above problems. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is that the curved hollow design and the complex contour of the inner surface of the game console handle are almost impossible to realize in principle through ordinary injection molding demolding. The traditional processing method is often achieved in the form of components, but this makes the processing process complicated. At present, the lost core molding technology is used for processing, but the core material used is a fusible polymer material. Due to the characteristics of the polymer material, the polymer material recovered after the core is removed cannot be recycled and used multiple times. Therefore, the present invention provides a processing method and product of a special-shaped structure product to solve the above problems.

[0006] The solution of the present invention to solve the technical problem is: a method for processing a product with a special-shaped structure, comprising the following steps:

[0007] S1: Design core structure and casting mold: Design fusible core structure and casting mold according to the internal contour of the product. If the core is thicker, it can be made into a hollow structure;

[0008] S2: The alloy material is heated and melted and then cast into a mold: the fusible alloy material is heated to above the casting temperature and then slowly cast into the mold (metal mold);

[0009] S3: core removal and inspection: take out the core after it cools down, and process and inspect the core nozzle;

[0010] S4: Molding product: placing the core into the injection mold, and closing the mold of the injection molding machine to inject the product;

[0011] S5: Melting out the core: After the injection molded product is taken out, it is placed in a hot bath. The hot bath temperature is set according to the melting temperature of the fusible alloy material used. After the hot bath time is reached, the fusible alloy material can be completely melted out;

[0012] S6: Product cleaning and drying: Take out the plastic product and wash it with water. After the surface of the plastic product is clean, dry it with hot air and inspect the plastic product.

[0013] S7: Alloy material collection: The melted alloy material is collected and can be used for the next core making.

[0014] Preferably, the casting mold needs to be equipped with a cooling system to dissipate the temperature of the mold in a timely manner.

[0015] Preferably, the alloy material may be a Bi-Sn-Pb (bismuth-tin-lead) alloy material, the composition ratio of which is Bi-52%, Sn-18%, Pb-30%, the melting point temperature is 95°C, and the specific gravity is 9.4g / cm 3 , which is much greater than the density of the dissolving solution, the dissolved metal material will be deposited at the bottom of the tank and can be easily recovered.

[0016] Preferably, the thermoplastic plastic used in the product may be PC, PC / ABS, PC+GF, ABS, PP, PPS, PPS+GF, PA, PA+GF.

[0017] Preferably, the hot bath fluid medium can use pure water. In order to prevent metal oxidation when the core is dissolved, the liquid fluid medium can be polyethylene glycol ester, which is colorless, odorless, non-toxic, non-irritating, liquid at room temperature, and has a density of 1.12g / cm 3 The performance is stable below high temperature of 120°C, and when it needs to be used at higher temperatures, antioxidants can be added to improve chemical stability. For example, the modified polyethylene glycol ester can maintain good stability at 150°C to 200°C.

[0018] In addition, the present invention also provides a product with a special-shaped structure, which is a special-shaped product processed by the processing method of the product with a special-shaped structure.

[0019] The beneficial effect of the present invention is that, for complex structures such as the curved hollow and internal buckle slots of game console handle products, which cannot be realized by conventional injection molds without disassembling parts, the present invention provides a processing method for special-shaped structural products, which can be processed and manufactured by using lost core molding technology. The core material is a recyclable and reusable fusible metal alloy material. The core is made from a casting mold, placed in an injection mold, and then injection-molded and coated with glue. Finally, the core is heated and melted out. The melted core material can be recycled to make new cores, and there is no loss of metal material during the melting and casting of the core.

Brief Description of the Drawings

[0020] Figure 1 The present invention is a flowchart of a method for processing a special-shaped structure product. [Specific implementation method]

[0021] To further illustrate the technical means and effects adopted by the present invention, the following is a detailed description in conjunction with the embodiments of the present invention and the accompanying drawings.

[0022] The present invention provides a method for processing a special-shaped structural product, which comprises the following steps:

[0023] S1: Design core structure and casting mold: Design fusible core structure and casting mold according to the internal contour of the product. If the core is thicker, it can be made into a hollow structure;

[0024] S2: The alloy material is heated and melted and then cast into a mold: the fusible alloy material is heated to above the casting temperature and then slowly cast into the mold (metal mold);

[0025] S3: core removal and inspection: take out the core after it cools down, and process and inspect the core nozzle;

[0026] S4: Molding product: placing the core into the injection mold, and closing the mold of the injection molding machine to inject the product;

[0027] S5: Melting out the core: After the injection molded product is taken out, it is placed in a hot bath. The hot bath temperature is set according to the melting temperature of the fusible alloy material used. After the hot bath time is reached, the fusible alloy material can be completely melted out;

[0028] S6: Product cleaning and drying: Take out the plastic product and wash it with water. After the surface of the plastic product is clean, dry it with hot air and inspect the plastic product.

[0029] S7: Alloy material collection: The melted alloy material is collected and can be used for the next core making.

[0030] The casting mold needs to be equipped with a cooling system to dissipate the temperature of the mold in a timely manner.

[0031] The alloy material may be a Bi-Sn-Pb (bismuth-tin-lead) alloy material, the composition of which is Bi-52%, Sn-18%, Pb-30%, the melting point of which is 95°C, and the specific gravity of which is 9.4 g / cm 3 , which is much greater than the density of the dissolving solution, the dissolved metal material will be deposited at the bottom of the tank and can be easily recovered.

[0032] Among them, the thermoplastic plastic used in the product can be PC, PC / ABS, PC+GF, ABS, PP, PPS, PPS+GF, PA, PA+GF.

[0033] The hot bath fluid medium can use pure water. In order to prevent metal oxidation when the core is dissolved, the liquid fluid medium can be polyethylene glycol ester, which is colorless, odorless, non-toxic, non-irritating, liquid at room temperature, and has a density of 1.12g / cm 3 The performance is stable below high temperature of 120°C, and when it needs to be used at higher temperatures, antioxidants can be added to improve chemical stability. For example, the modified polyethylene glycol ester can maintain good stability at 150°C to 200°C.

[0034] In addition, the present invention also provides a product with a special-shaped structure, which is a special-shaped product processed by the processing method of the product with a special-shaped structure.

[0035] The beneficial effect of the present invention is that, for complex structures such as the curved hollow and internal buckle slots of game console handle products, which cannot be realized by conventional injection molds without disassembling parts, the present invention provides a processing method for special-shaped structural products, which can be processed and manufactured by using lost core molding technology. The core material is a recyclable and reusable fusible metal alloy material. The core is made from a casting mold, placed in an injection mold, and then injection-molded and coated with glue. Finally, the core is heated and melted out. The melted core material can be recycled to make new cores, and there is no loss of metal material during the melting and casting of the core.

[0036] It should be pointed out that the present invention is not limited to the above-mentioned implementation modes, and any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments by any technician familiar with the profession based on the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A method for processing a special-shaped structural product, characterized in that: It includes the following steps: S1: Design core structure and casting mold: Design fusible core structure and casting mold according to the internal contour of the product. If the core is thicker, it can be made into a hollow structure; S2: The alloy material is heated and melted and then cast into a mold: the fusible alloy material is heated to above the casting temperature and then slowly cast into the mold (metal mold); S3: core removal and inspection: take out the core after it cools down, and process and inspect the core nozzle; S4: Molding product: placing the core into the injection mold, and closing the mold of the injection molding machine to inject the product; S5: Melting out the core: After the injection molded product is taken out, it is placed in a hot bath. The hot bath temperature is set according to the melting temperature of the fusible alloy material used. After the hot bath time is reached, the fusible alloy material can be completely melted out; S6: Product cleaning and drying: Take out the plastic product and wash it with water. After the surface of the plastic product is clean, dry it with hot air and inspect the plastic product. S7: Alloy material collection: The melted alloy material is collected and can be used for the next core making.

2. A method for processing a special-shaped structural product according to claim 1, characterized in that: The alloy material may be a Bi-Sn-Pb (bismuth-tin-lead) alloy material, with a composition ratio of Bi-52%, Sn-18%, Pb-30%, a melting point temperature of 95°C, and a specific gravity of 9.4 g / cm 3 .

3. The method for processing a special-shaped structural product according to claim 1, characterized in that: The thermoplastic plastic used in the product may be PC, PC / ABS, PC+GF, ABS, PP, PPS, PPS+GF, PA, PA+GF.

4. The method for processing a special-shaped structural product according to claim 1, characterized in that: The hot bath fluid medium can be pure water. In order to prevent metal oxidation when the core is dissolved, the liquid fluid medium can be polyethylene glycol ester. When it is necessary to apply it to a higher temperature, an antioxidant can be added to improve the chemical stability. That is, the modified polyethylene glycol ester can maintain good stability at 150°C to 200°C.

5. A product with a special-shaped structure, characterized in that: It is a special-shaped product processed by the processing method of the special-shaped structural product according to any one of claims 1 to 4.

Images