Release time：2022-01-04
Generally, the injection molding methods used in the plastic coating process include one-time molding with a two-color injection molding machine, or two-time injection molding with an ordinary injection molding machine. Hardware plastic injection molding, that is, hardware accessories are put into the injection mold for plastic plastic injection molding.
01. Injection molding industry, rubber coating type
Hardware covered plastic is also known as "hardware covered plastic, plastic covered injection molding, metal covered plastic, iron covered plastic, copper covered plastic, beer covered injection molding, hardware covered beer plastic", which has different names. As the name suggests, all metal parts are processed by plastic injection molding after production.
Plastic wrapped plastic, also has many names "plastic wrapped plastic, plastic wrapped, beer set, secondary molding, two-color injection molding, multi-color injection molding" all belong to the plastic wrapped injection molding process.
02. Plastic coated injection molding materials
In principle, the hardware part belongs to metal materials, including stainless steel, brass, aluminum alloy, charging terminals, conductive terminals, wires, steel wires, bearings, hardware stamping accessories, hardware turning parts and other metal parts; Some commonly used plastic materials include PC, ABS, PP, POM, TPE, TPU, PVC, PA66, PA6, PA46, hard glue, soft glue, fiber modified plastics, etc., which are widely used in various fields.
Plastic wrapped plastic, whether it is primary molding or secondary molding, basically all plastic materials can adopt plastic wrapped injection molding process, such as PC, ABS, PP, POM, TPE, TPU, PVC, PA66, PA6, PA46, hard rubber, soft rubber, fiber modified plastic, which are basically common engineering plastics and have a wide range of applications.
03. Plastic coated injection molding machine
Horizontal injection molding machine, horizontal two-color injection molding machine, horizontal multi-color injection molding machine, vertical injection molding machine, two station rotary vertical injection molding machine, drawer type vertical injection molding machine, vertical two-color injection molding machine, vertical multi injection molding machine; There are many kinds of injection molding machines and many brands of injection molding machines. When choosing machines, I don't know what kind of injection molding machines to choose to meet the needs of plastic injection molding.
04. Selection of plastic coated injection molding machine
According to different product structures, size requirements and appearance standards, different injection molding machines are selected. Each type of injection molding machine has its own advantages and disadvantages. Some injection molding processing costs are low, and all injection molds are very expensive; Some have superior production efficiency, but the size deviation fluctuates greatly; Some sizes have stable performance, but the production efficiency is not high. According to the situation that our injection molding factory has exported to Japan in the past 10 years, there have been many customized products for mother and baby products, household beauty instruments and household appliances. When customizing products, injection molding, two-color injection molding and plastic injection molding all need to be used. It is impossible to adopt a single injection molding form and different injection molding processes to meet the functional requirements of products.
05. Application of ordinary plastic coating injection molding machine
Two color plastic injection molding: plastic plastic plastic, appearance products, waterproof structure, chassis panels and products with stable size are widely used.
Vertical plastic coated injection molding: Hardware plastic coated products with strict size and difficult plastic coated positioning are widely used.
Two position rotary vertical injection molding machine: large quantity, inconvenient placement of rubber coated accessories, and difficult positioning of rubber coated products are more used.
Horizontal injection molding machine: there is no problem with the positioning of plastic coated parts, and it can be used without troublesome operation.
06. Precautions for plastic coated injection molding
No matter what kind of injection molding machine is used, the injection molding machine needs to be selected according to the difficulty of product function, injection molding operation, accessory positioning and so on. Different injection molds of injection molding machines are also different. It is best to find an experienced injection mold factory with the same type of samples to assist in the selection of injection molding machines and the design of plastic coated injection molds.
Plastic coated injection mold needs to consider the size of plastic coated accessories, plastic coated injection molding processing, mold accuracy, product positioning, operation and placement. The dimensional accuracy is twice that of ordinary injection mold. Although the accuracy requirements of the two-color injection mold are also very strict, the plastic coated injection mold is more complex than the two-color injection mold. The two-color injection molding is completed by the same injection molding machine, the product has not been fully cooled, and the fluctuation of the one-time molding size is not obvious; The size of plastic coated parts processed by plastic injection molding is ever-changing, which is more difficult than two-color injection molding. Therefore, it is necessary to fully consider the choice of injection molding process with the technicians of the injection mold factory, and we must not take it lightly.
07. Application of plastic coated injection molding process
Appearance products, conductive products, power cut terminals, hardware handles, product enhancement, waterproof products, electrical products, beauty products, mother and baby products, small household appliances, electric fans, new energy vehicles, game consoles, sports equipment, night lights, desk lamps and other application fields are very wide.
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