Types and Applications of Injection Molds
In production practice, due to the involvement of multiple factors, such as the type of molded plastic, the structural shape and dimensional accuracy of the plastic part, the production batch, the type of injection machine and the injection process conditions, the processing structure of the injection mold is varied. The injection mold is one of the important process equipment for Power Tool Injection Molding Manufacturers when molding plastic parts. It can enable the plastic to obtain the required shape and performance, and plays a key role in meeting the plastic processing technology, part use requirements and modeling design requirements. According to different process requirements, injection mold processing can be divided into the following categories:
1. Plastic injection molding mold
The processing equipment for plastic injection molding molds is an injection molding machine. After the plastic is heated and melted in the barrel of the injection machine, it is pushed by the screw or plunger, enters the mold cavity through the nozzle and the mold pouring system, and forms a part after cooling and solidification. Injection molding is usually suitable for the production of thermoplastic plastic parts and is the most widely used processing method among electric tool injection molding manufacturers.
2. Plastic extrusion molding die
During the extrusion molding process, the injection molding manufacturer uses the heating and pressurizing device of the extruder to make the plastic in a viscous flow state pass through the die head with a specific cross-sectional shape under high temperature and high pressure, and harden and mold through the cooling and shaping device, so as to obtain a continuous profile with the required cross-sectional shape. This molding method is called extrusion molding, and the mold used is called an extrusion molding die or an extruder head, which is mainly suitable for the production of thermoplastic plastic parts.
3. Plastic compression molding die
During the compression molding process, the electric tool injection molding manufacturer puts the measured molding material into the cavity or feeding chamber of the heated mold and closes the mold. The plastic softens and presents a viscous flow state under the action of high temperature and high pressure. After a certain period of time, it is solidified and molded to form the desired product shape. Compression molds are usually used to mold thermosetting plastic parts, and can also be used for the production of thermoplastic plastic parts.
4. Plastic injection molding die
Through the plunger, the injection molding manufacturer presses the thermosetting plastic melted by heat into the heated closed cavity and solidifies it. This molding method is called injection molding, and the mold used is called injection molding mold or injection mold. Injection molds are mainly used for the molding of thermosetting plastic parts.
5. Hollow blow molding mold
During the hollow blow molding process, the molten tubular blank obtained by extrusion or injection is placed in the mold cavity, and compressed air is used to expand the tube blank and make it close to the mold cavity wall. After cooling, a hollow plastic part is obtained. This molding method is called hollow blow molding, and the mold used is called a hollow blow molding mold or a blow molding mold.
6. Air pressure (vacuum or compressed air) molding mold
The air pressure molding mold is usually a single female mold or male mold. With the help of a vacuum pump or compressed air, the heated and softened plastic plate or sheet fixed on the mold is close to the mold cavity, and the plastic part is obtained after cooling and shaping. This molding method is called air pressure molding, and the mold used is called air pressure molding mold.
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