The price of injection molds is about a few thousand yuan per pair, with some being as expensive as one or two thousand yuan. Different types of plastic molds have different prices. The price of molds is influenced by various factors, such as brand, category, specifications, market, etc. It is necessary to have a comprehensive understanding and comparison before making a purchase. In terms of types, plastic processing molds can be classified according to different molding methods, which correspond to different process requirements, including injection molds, extrusion molds, vacuum forming molds, and high foaming polystyrene molds. (Plastic) mold. It is mainly a molding mold widely used in the production of thermoplastic parts. The injection mold processing equipment is an injection molding machine. The plastic is first heated and melted in the heating tube at the bottom of the injection mold, and then driven by the screw or plunger of the injection mold through the injection mold nozzle and injection system. All of these enter the mold cavity, the plastic cools and hardens, and the product is obtained through demolding. Its structure usually consists of molded parts, pouring system, guide parts, transmission mechanism, temperature control system, exhaust system, support parts, etc. Plastic mold steel modules are commonly used for manufacturing materials. Common materials include carbon structural steel, carbon tool steel, alloy tool steel, and high-speed steel. The injection molding process is usually only applicable to the production of thermoplastic products. Plastic products produced through injection molding technology are very extensive. From daily necessities to various complex mechanical, electrical, and transportation components, they are all molded using injection molds. It is a widely used processing method in the production of plastic products. ... two. Plastic molds. It includes compression and injection molding. They are mainly used to form thermosetting plastic molds, and the corresponding equipment is a pressure molding machine. Heat the mold to the molding temperature (usually 103-108) based on the characteristics of the plastic. Then place the measured powder into the mold cavity and loading cavity, and close the mold. Under the action of high temperature and high pressure, plastics become soft and flow viscous. After a period of time, the mold solidifies to form the desired product shape. Unlike compression molding, injection molding has a separate feeding chamber. Before molding, first close the mold and preheat the plastic in a viscous flow state in the feeding chamber. Under pressure, it is adjusted to squeeze into the mold cavity and harden. Compression molds are also used to form special thermoplastic materials, such as thermoplastic (such as polytetrafluoroethylene) blanks (cold pressed), resin lenses with high optical properties, and microfoamed nitrocellulose steering wheels. The compression mold is mainly composed of a mold cavity, a feeding mold cavity, a guiding mechanism, a pushing element, a heating system, etc. Injection molds are widely used for packaging electrical components. The materials used for manufacturing compression molds are basically the same as those used for injection molds. Three. Plastic extrusion mold. This utility model relates to a mold for continuous molding of plastic products, also known as an extrusion mold. Widely used in pipelines, rods, monofilaments, sheets, films, wire and cable cladding, and various types of processing. The corresponding production equipment is a plastic extruder. The principle is to melt and shape solid plastics under the heating and screw rotation pressure of the extruder. Continuous plastic products with the same cross-section and mold shape are made from specially shaped molds. Its main manufacturing materials are carbon structural steel and alloy tools. Some extrusion molds will be embedded with diamonds and other wear-resistant materials on the parts that require wear resistance. The extrusion process is usually only suitable for the production of thermoplastic products, which is significantly different from the structure of injection molds and compression molds. 4. Plastic blow molding molds. It is a mold used to form hollow products for plastic containers such as beverage bottles, daily chemical and other packaging containers. According to the process principle, the main forms of blow molding include extrusion blow molding, injection blow molding, injection stretch blow molding (commonly known as "injection stretch blow molding"), multi-layer blow molding, and hollow molding. Blow molding, hollow forming and other equipment corresponding to the blow molding of hollow products are often referred to as plastic blow molding machines. Blow molding is only suitable for the production of thermoplastic products. The structure of blow molding molds is relatively simple, and most of the materials used are carbon. 5. Plastic molds. It is a mold that forms simple plastic products from plastic sheets.