Sep. 02, 2024
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Paper clip mold opened in molding machine; the nozzle is visible at right A injection molding machine with a robot
An injection molding machine (also spelled as injection moulding machine in BrE), also known as an injection press, is a machine for manufacturing plastic products by the injection molding process. It consists of two main parts, an injection unit and a clamping unit.[1]
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Injection molding machine molds can be fastened in either a horizontal or vertical position. Most machines are horizontally oriented, but vertical machines are used in some niche applications such as insert molding, allowing the machine to take advantage of gravity. Some vertical machines also do not require the mold to be fastened. There are many ways to fasten the tools to the platens, the most common are manual clamps (both halves are bolted to the platens); however, hydraulic clamps (chocks are used to hold the tool in place) and magnetic clamps are also used. The magnetic and hydraulic clamps are used where fast tool changes are required.
The person designing the mold chooses whether the mold uses a cold runner system or a hot runner system to carry the plastic and fillers from the injection unit to the cavities. A cold runner is a simple channel carved into the mold. The plastic that fills the cold runner cools as the part cools and is then ejected with the part as a sprue. A hot runner system is more complicated, often using cartridge heaters to keep the plastic in the runners hot as the part cools. After the part is ejected, the plastic remaining in a hot runner is injected into the next part.
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Machines are classified primarily by the type of driving systems they use: hydraulic, mechanical, electrical, or hybrid
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Hydraulic machines have historically been the only option available to molders until Nissei Plastic Industrial introduced the first all-electric injection molding machine in .[2] Hydraulic machines, although not nearly as precise, are the predominant type in most of the world, with the exception of Japan.[3]
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Mechanical type machines use the toggle system for building up tonnage on the clamps of the machine. Tonnage is required on all machines so that the clamps of the machine do not open due to the injection pressure. If the mold partially opens up, it will create flashing in the plastic product.
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The electric press, also known as Electric Machine Technology (EMT), reduces operation costs by cutting energy consumption and also addresses some of the environmental concerns surrounding the hydraulic press. Electric presses have been shown to be quieter, faster, and have a higher accuracy, however the machines are more expensive.
Hybrid injection (sometimes referred to as "Servo-Hydraulic") molding machines claim to take advantage of the best features of both hydraulic and electric systems, but in actuality use almost the same amount of electricity to operate as an electric injection molding machine depending on the manufacturer.[4][5]
A robotic arm is often used to remove the molded components; either by side or top entry, but it is more common for parts to drop out of the mold, through a chute and into a container.
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Consists of three main components:
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Consists of three main components:[6]
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Are you interested in learning more about Small Pet Bottle Blowing Machine? Contact us today to secure an expert consultation!
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PET bottle blowing machine works by heating and melting PET resin pellets, which are then forced into a mold cavity. The molten plastic is then cooled and solidified, and the bottle is ejected from the mold. The machine is typically equipped with a preform loader, a heating oven, a blowing station, and a bottle ejector. The preform loader loads the PET resin pellets into the heating oven, where they are melted and then forced into the mold cavity. The blowing station then applies pressure to the molten plastic to form the bottle, and the bottle ejector ejects the finished bottle from the mold.
PET bottle blowing machine is ideal to manufacture different shapes and sizes of PET/PE/PC bottles. It is the most high-cost performance solution for large production requirements of plastic bottles. And this pet bottle molding machine is quite suitable for small and medium-scale projects. It is widely used in lots of industries, such as mineral water, pure water industry, beverage industry, cosmetic industry, pharmaceutical industry, cooking oil industry, liquid detergent industry, etc. A bottle blow machine is essential equipment for a complete manufacturing line in many industries.
What is PET bottle blowing?
Generally, there is a PET bottle blowing process when manufacturing a plastic bottle. And this process is usually finished by a bottle blowing machine. And there is a semi-automatic PET bottle blowing machine and a fully automatic PET bottle blowing machine. These machines can both complete the process of stretching and blowing. They have different features and advantages. If you are looking for a reliable bottle molding machine, it is necessary for you to clear your requirements.
Two Stage Bottle Moulding Machine
Performance features of Taizy PET bottle blow machine
Infrared light is mixed into the preheater to ensure that the PET bottle preform is heated evenly.
Mechanical arms are sedated to ensure that the mold is tightly closed under high temperature.
Pneumatic system consists of two parts: pneumatic acting part and blowing bottle part, in order to meet the different requirements of acting and blowing, it provides enough stable high pressure for blowing. It provides stable high pressure to blow large bottles with irregular shapes.
It is equipped with a silencer and oiling system for lubricating the mechanical parts of the machine.
Reasonable design and structure. The plastic bottle blowing machine is easy to operate and maintain.
Wide applications. It can make various PET bottles through replace different molds.
A brief introduction to plastic bottles
Today, more than 80% of bottles produced are for the beverage industry, the vast majority of which are made using two-stage technology. And the remaining 15% to 20% can choose either process and many of the decisions are actually driven by tool prices of less than 200 (m/year production is so many custom applications), and even buying four cavity single-stage tools to buy bottle perform is also difficult to prove its rationality and run on the double cavity and engine needs less capital spending In the past 10 years, the number of available bottles billet has increased dramatically all over the world. Because the performance is different from bottles, its transportation cost of it is cost-effective.
Plastic Bottles
How do PET blowing machines work?
In short, automatic PET bottle blowing machine is intelligent. Currently, linear two-step blow molding machine mainly the whole blow molding process is divided into preheating and blow molding. The specific working principle is as follows.
The whole bottle blank transfer automatic feeder loads the bottle blank into the clamping position, and the clamping fixture takes the bottle blank out and enters the heating furnace.
Through the conveyor chain. The infrared oven has two rows of horizontal red line lamps. The temperature of each tube can be adjusted by micro controller PLC. The upper and lower red line lamps are stable under constant temperature, but the height is different. At the same time, due to the high temperature environment, the temperature from the middle of the bottle blank to the bottom of the bottle is controlled by constant temperature through the dispersion tube in the chiller. As the hot air evaporates upward, the bottom temperature of the bottle is relatively low.
Blowing into the bottle. Heated preform into the clamping device for blowing hot bottle preform into the clamping device glass ware billet. With blowing, bottle preform stretching up stretch at the bottom of the stem, blow to a certain degree, low pressure blowing, blowing into high pressure at the same time. In a very short period of time, instant molding the bottle, and bottle blowing. Before gas blowing beforehand, usually installed a person. The gas passes through the filter to filter the water in the air and the oil in the lubrication of the equipment. The gas is clean and the formed bottle has no oil smell. In addition, the hot bottle blank in the mold closing device will increase the temperature in the mold, thus affecting the bottle and the equipment.
Recycle the high pressure and low-pressure gas in the excess gas bottle after blowing once, the exhaust of the gas will cause energy waste, and increase energy consumption by installing the gas recovery device, pre blowing and blowing through the one-way valve into the gas storage tank, can save 25% of the energy consumption.
Plastic Bottle Blow Machine Working Process
Contact us to discuss your requirements of Pet Bottle Mold Maker. Our experienced sales team can help you identify the options that best suit your needs.
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