What are the 6 systems of plastic molds?

Release time:2024-04-16
What are the 6 systems of plastic molds?

The functional structure of plastic mold system mainly consists of pouring system, temperature control system, molding parts system, exhaust system, guiding system, ejector system and other six systems, of which the pouring system and molding parts system is in direct contact with the plastic part, and with the change of plastic and products, is the plastic mold in the complexity of the changes, the requirements of the processing of the part of the high degree of finish and precision. Next by the I deal Vowin mold manufacturer editor detailed to introduce to you:
1、Pouring system.
The casting system refers to the part of the runner before the plastic enters the cavity from the injection nozzle, including the main flow channel, cold material cavity, manifold and gate, etc. The casting system is the part of the runner before the plastic enters the cavity from the injection nozzle;
2、Molding parts system.
Molding parts system refers to the shape of the product constitutes a combination of various parts, including moving mold, fixed mold and cavity (concave mold), core (convex mold), molding rod and other components. The core forms the inner surface of the product and the cavity (concave mold) forms the outer surface of the product. After closing the mold, the core and cavity form the cavity of the mold. According to the process and manufacturing requirements, sometimes the core and concave mold by a number of pieces combined, sometimes made into a whole, only in the easy to damage, difficult to process the parts using inserts;
3、Tempering system.
Temperature regulation system is in order to meet the requirements of the injection process on the mold temperature, the need for temperature regulation system to regulate the temperature of the mold. For thermoplastic injection mold, mainly designed to cool the cooling system to make the mold cooling (can also be heated to the mold). Mold cooling is a common way to open cooling water channels in the mold, the use of circulating cooling water to take away the heat of the mold; mold heating in addition to the use of cooling water through hot water or hot oil, but also in the mold and around the installation of electric heating elements;
4、Exhaust system.
Exhaust system is for the injection molding process cavity air and plastic melting gas produced by the exclusion of the mold and the establishment of the exhaust is not good when the product surface will form gas marks (gas lines), burning and other bad; plastic mold exhaust system is usually in the mold opened a slot-shaped outlets for the discharge of the original cavity air and the melt brought into the gas;
Molten material into the cavity, the original air stored in the cavity and the gas brought in by the melt must be at the end of the material flow through the exhaust port to the outside of the mold, otherwise it will make the products with air holes, poor joints, filling of the mold is not full, and even the accumulation of air due to compression to produce high temperatures and will be burned products. In general, the air vent can be located in the cavity at the end of the melt flow, can also be located in the mold on the parting surface;
The latter is in the concave mold side of a shallow groove 0.03-0.2mm deep, 1.5-6mm wide. During injection, not much melt will ooze out of the vent hole because the melt will cool and solidify there to block the channel. Do not open the air vent to the operator to prevent the melt from accidentally spraying out and injuring people. In addition, you can also use the ejector rod and the ejector hole with the gap, the top of the block and stripper plate and the core of the matching gap to exhaust;
5、Guiding system.
Guiding system is to ensure that the moving mold and fixed mold in the mold can be accurately centered and set up, in the mold must be set up to guide parts. In the injection mold is usually used in four groups of guide pillar and guide sleeve to form the guide parts, sometimes also need to set up in the moving mold and the fixed mold respectively coincide with each other on the inner and outer cone to assist in positioning;
6、Ejector system.
Ejector system generally includes ejector pin, front and rear ejector plate, ejector guide bar, ejector reset spring, ejector plate locking screws and other parts. When the product is cooled in the mold molding, the mold before and after the mold separation open, by the launch mechanism - ejector pin in the injection molding machine under the push of the ejector rod will be plastic products and their congealed material in the runners launched or pulled out of the mold cavity and the location of the runners, in order to carry out the next cycle of injection molding work.

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