Appliance injection molding manufacturing industry

Combined with the automation characteristics of injection molding, manufacturers can produce hundreds of thousands of pieces every day and easily batch products. High quality injection molding products are the main body of any processing plant, so they are often considered the key to customer service. Manufacturers in these industries usually enter the injection molding stage.

The first point of the injection molding automation project is injection molding. Although injection molding is a process, many additional plastic types operate on the basis of the automation of injection molding.

● Precise injection molding machine. In the injection molding stage, it is often considered as a high-end configuration. The application of injection molding technology is dangerous and difficult, and it is difficult to innovate.

However, the setting of injection molding parameters depends on the type of plastic. The setting of injection molding parameters determines the properties of plastics and the performance of injection molding machines. A complex setup requires skilled injection molding machine technology. In most cases, extensive injection molding experience is required. The settings of injection molding parameters can be combined into a successful injection molding parameter.

For a complex plastic part, it will also affect the setting of injection molding process parameters. For example, injection speed. If necessary, you can set the injection speed as the appropriate setting range. For example, the pressure holding pressure setting is the main setting method for injection speed setting. If multi-point cooling area can be set, and the cooling channel shall be lengthened before mold closing.

Although the injection speed setting is to set the injection depth, its setting mode is the theoretical setting of the speed setting set by the stability, non-contact type (i.e. the speed set by the opening speed) and reciprocating mode. The speed setting in each direction is to set an option. If the input amount of injection molding materials is insufficient, automatic operation is required. The output amount of injection molding machines is quite different. Therefore, only a more stable method can be used to set the action setting. The injection parameters of non-contact injection molding machines are usually established below the mold closing height. In this case, the speed setting mainly refers to the injection speed adjustment, For example, the nozzle angle is too large or too small; The setting of injection pressure mainly refers to the conversion speed of the mold at the closing height. For example, when the injection pressure of the main runner is set, it is better to keep the injection speed constant and related to the injection speed.

● The injection pressure and injection pressure of the main material mold are roughly the same, but when the material temperature is too high or the material temperature is too high, a large pressure will be generated when the molten material is injected into the mold cavity at the beginning of the metering section. At this time, the pressure is the main factor determining the maximum active pressure value of the product.

● Mold temperature distribution is an important factor to determine product quality, because high mold temperature will affect product performance.

● The injection process is the main factor affecting the product quality, because it directly affects the product size and injection cycle, so it will also have a certain impact on the product appearance and cost.

The imported mold temperature controller can provide uniform mold temperature control without any problems. It can ensure the quality of the product, that is, the combustion temperature, and bake the plastic products in the thermal insulation oven.

● Injection temperature, each PID 0-015 ° C, depends on the thickness of the product.

● Molding pressure: the injection pressure is 3-5 times of the speed injection pressure, and the clamping force can be determined by the user according to the thickness of the product.

● Gate design. The gate position has little influence on the pressure holding pressure of the product. Because there are 5-10mm gates left on the gate, the gate position needs to be determined according to the thickness of the product.

● When multi-point gates are used for thin-walled products, since the pressure maintaining pressure in the mold cavity is transferred to the pressure maintaining pressure, multi-point gates can be used for small gates. Since the pressure maintaining pressure is transferred to the pressure maintaining pressure, multi-point gates can be used for large gates to solve this problem, which can save the pressure maintaining time and reduce the pressure maintaining pressure.

● When multi-point gates are used for thin-walled products, since the pressure holding pressure is transferred to the pressure holding pressure, multi-point gates can be used for small gates to solve this problem, which can save the pressure holding pressure, but it is easy to form shrinkage defects, bringing some auxiliary melt flow for the pressure holding pressure.

● When the products are demoulded before forming, generally brush the side of their surface with release agent to make them completely consistent with the mold core. However, if the release agent contains a side slip metamorphic layer, it will cause the side core pulling mechanism of the product to move during demoulding, and reverse slip cannot be prevented during demoulding.

● After forming, the side core pulling mechanism of the plastic part shall avoid reverse sliding on the outer side of the plastic part. It is conducive to ensuring the smooth demoulding of plastic parts. The warping, flanging and reverse sliding of plastic parts must be considered in mold design.

● The position of parting surface shall be conducive to mold processing, exhaust, demoulding and molding operations, the quality of the skin pattern of the plastic parts, and the protection requirements for the products of high quality.

● Gate position: the shape of plastic parts shall be symmetrical as far as possible, and the structure directly formed by curved core shall be avoided as far as possible.

● All circuit boards must be completely demoulded, and the detachable parts shall be used at the same time for more than two times.

● All PC plastic parts shall not be welded. If they are directly welded, the welding screw shall be fixed on the positive pole of the weldment. The weldment or plastic products shall not be on the A-half aluminum welding surface. 2 During welding, re welding shall be done at one time to avoid layer falling off due to secondary welding.

Since the weldments are not allowed to have defects (such as welding screws, cold welding and cold welding), if the welding materials are not allowed to have defects, special welding materials can be used instead. Welding materials shall be selected correctly.

Of course, laser welding is not necessarily suitable for welding materials with very thick layers. The strength of welding materials is generally ≤ 35~100MPa. The welding method can solve this problem well and avoid secondary melting.

Of course, because of this, laser welding has been applied in many occasions. In recent decades, we have been a professional new product. At that time, we did not know laser welding, so laser welding has become a considerable research direction.