Types Of Toy Plastic Molds

October 21,2021

Before each product is launched, it needs to be designed by the design company for product planning, appearance design, structure and function design and hand board production. Then the mold opening company can develop the mold, and then a series of mass production can be carried out. Toy plastic mold is a tool matched with plastic molding machine in plastic processing industry to endow plastic products with complete configuration and accurate size. According to different molding methods, it can be divided into different types of molds. What is a toy plastic mold?


Injection molding machine for plastic toys


What is a toy plastic mold?


👉Injection mold


It is mainly a kind of molding mold most widely used in the production of thermoplastic parts. The processing equipment corresponding to the plastic injection mold is the plastic injection molding machine. The plastic is heated and melted in the heating barrel at the bottom of the injection machine, and then driven by the screw or plunger of the injection machine, enters the mold cavity through the nozzle of the injection machine and the pouring system of the mold, and the plastic is cooled and hardened for molding, Demoulding to obtain products. Its structure is usually composed of forming parts, gating system, guiding parts, pushing mechanism, temperature regulating system, exhaust system, support parts and so on. Plastic mold steel module is usually used for manufacturing materials, and the commonly used materials are mainly carbon structural steel, carbon tool steel, alloy tool steel, high-speed steel, etc. Injection molding processing method is usually only applicable to the production of thermoplastics products. Plastic products produced by injection molding process are very extensive. From daily necessities to all kinds of complex machinery, electrical appliances and vehicle parts are formed by injection mold. It is the most widely used processing method in the production of plastic products. Ningbo Lisong Injection Molding Technology Co., Ltd. providing wholesaling Injection molding machine for plastic toys, click here for a more specific quotation.


👉Blow mold


It is a mold used to form plastic container hollow products (such as beverage bottles, daily chemical products and other packaging containers). According to the process principle, the forms of blow molding mainly include extrusion blow molding hollow molding, injection blow molding hollow molding, injection extension blow molding hollow molding (commonly known as "injection pull blowing"), multi-layer blow molding hollow molding, sheet blow molding hollow molding, etc. The equipment corresponding to blow molding of hollow products is usually called plastic blow molding machine. Blow molding is only applicable to the production of thermoplastic products. The structure of blow molding die is relatively simple, and the materials used are mostly made of carbon.


👉Extrusion mold


A kind of mould, also known as extrusion head, used to form and produce plastic products with continuous shape. It is widely used in the processing of pipe, bar, monofilament, plate, film, wire and cable coating, profile, etc. The corresponding production equipment is the plastic extruder. Its principle is that the solid plastic is melted and plasticized under the conditions of heating and rotating and pressurizing of the screw of the extruder, and the continuous plastic products with the same cross section and die shape are made through the die of a specific shape. Its manufacturing materials mainly include carbon structural steel, alloy tools, etc. Some extrusion dies will also be inlaid with diamond and other wear-resistant materials on the parts that need wear-resistant. Extrusion process is usually only applicable to the production of thermoplastic products, which is obviously different from injection mold and compression mold in structure.


👉Blister mold


It is a kind of mold for molding some simple plastic products with plastic plates and sheets as raw materials. Its principle is to use the vacuum blooming method or compressed air molding method to deform the plastic plates and sheets fixed on the concave die or punch under the condition of heating and softening and stick them on the cavity of the mold to obtain the required molding products. It is mainly used for some daily necessities, food Toy packaging products production. Because the pressure of blister mold is low during forming, the mold material is mostly made of cast aluminum or non-metallic materials, and the structure is relatively simple.


👉Compression mold


Including compression molding and injection molding. They are a kind of molds mainly used to form thermosetting plastics, and their corresponding equipment is pressure forming machine. The compression molding method heats the mold to the molding temperature according to the plastic characteristics, then puts the measured compression molding powder into the mold cavity and feeding chamber, and closes the mold. The plastic is softened and viscous flow under the action of high heat and high pressure. After a certain time, it is solidified and shaped to become the required product shape. The difference between pressure injection molding and compression molding is that there is a separate feeding chamber. Before molding, the mold is closed first, and the plastic is preheated in the feeding chamber in a viscous flow state. It is adjusted and squeezed into the mold cavity under the action of pressure and hardened. Compression molds are also used to form some special thermoplastics, such as thermoplastics blanks that are difficult to melt, resin lenses with high optical properties, slightly foamed nitrocellulose, automobile steering wheel, etc. The compression mold is mainly composed of cavity, feeding cavity, guiding mechanism, pushing parts, heating system, etc. Injection mold is widely used to package electrical components. The material used in the manufacture of compression mold is basically the same as that of injection mold.


👉High foaming polystyrene mold


It is a kind of mold that can be used to produce all kinds of required shape foam plastic packaging materials with expandable polystyrene raw materials. The principle is that the polystyrene can be molded into the mold by steam, including two types of simple manual mold and straight through foam mold for hydraulic machines, mainly used for the production of industrial products packaging products. The materials for manufacturing this kind of mold include cast aluminum, stainless steel, bronze, etc.


Maintenance method


👉Before power on


  1. Before the operation of the injection molding machine, check whether there is water and oil in the electrical control box. If the electrical appliance is damp, do not start it.Maintenance personnel shall blow dry the electrical parts before starting the machine.


  1. Before the operation of the injection molding machine, check whether the power supply voltage meets the requirements, which generally shall not exceed ± 6%.


  1. Check whether the emergency stop switch and front and rear safety door switches are normal. Verify whether the rotation direction of motor and oil pump is consistent.


  1. Check whether all cooling pipes are unblocked, and feed cooling water into the oil cooler and the cooling water jacket at the end of the barrel.


  1. Before the operation of the injection molding machine, check whether there is lubricating oil at all moving parts and add enough lubricating oil.


  1. Turn on the electric heater to heat each section of the barrel. When the temperature of each section meets the requirements, it shall be kept warm for a period of time to stabilize the temperature of the machine. The holding time varies according to the requirements of different equipment and plastic raw materials.


  1. Add enough plastic into the hopper. According to the requirements of different plastics for injection molding, some raw materials should be dried first.


  1. Cover the heat shield on the cylinder, which can save electric energy and prolong the service life of electric heating ring and current contactor.


👉Operation process


  1. Do not cancel the function of safety door for convenience.


  1. Observe the temperature of pressure oil, and the oil temperature shall not exceed the specified range. The ideal working temperature of hydraulic oil should be kept between 45-50 ℃, generally in the range of 35-60 ℃.


  1. Pay attention to adjusting each travel switch to avoid impact during operation of the machine.




  1. After the operation of the injection molding machine, the plastic in the barrel shall be cleaned to prevent residual material oxidation or long-term thermal decomposition.


  1. The mold shall be opened so that the toggle mechanism is locked for a long time.


  1. The workshop must be equipped with lifting equipment. Be very careful when assembling and disassembling the mold to ensure production safety.


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