What Are The Types Of Rotational Molding Machines
There are many types of rotational molding machines, and there are many different types according to different classification methods. The following are some main classification methods and corresponding rotomolding machine types:
1. Classification according to heating methods
Natural gas direct fire heating: This type of rotational molding machine generates heat through direct combustion of natural gas to heat the mold and raw materials.
Hot box heating: Hot box heating methods can be divided into electric heating, oil heating, gas heating, coal heating, etc. The specific energy source used depends on the design of the equipment and user needs.
Thermal radiation heating: Use the principle of thermal radiation to heat the mold and raw materials.
Thermal material heating: The heat medium (such as hot oil, hot water, etc.) circulates to transfer heat to the mold and raw materials.
2. Classification by type of rotation
Swinging rotomolding machine: This type of rotomolding machine rotates around the main axis while working, and also swings left and right around the auxiliary axis. It has a simple structure and usually uses an open flame heating method, but its temperature controllability is poor and the system automation is not high.
Two-axis rotary molding machine: This type of equipment realizes the heating and shaping of the mold and raw materials through the rotation of two axes, which has higher flexibility and production efficiency.
3. Classification by arm movement method
Fixed arm rotational molding machine: the arm position is fixed during operation.
Pendulum rotomolding machine: The arm swings like a pendulum.
Shuttle rotomolding machine: It has two or more shuttle machines, which can alternate heating and cooling operations to improve production efficiency.
Rotary-vertical rotational molding machine: It is divided into two types: random arm-rotation vertical type (each arm can move freely) and non-random arm rotation vertical type (each arm is connected together and moves with each other).
4. Classification by number of arms
According to the number of arms of the rotational molding machine, it can be divided into multiple types such as double arms, three arms, and four arms. Rotational molding machines with different numbers of arms are suitable for production needs of different scales.
5. Classification by hot box
Moving Hot Box Rotational Molding Machine: The hot box can be moved to accommodate molds of different sizes and shapes.
Fixed hot box rotational molding machine: The hot box position is fixed, and the mold needs to be moved into the hot box for heating.
6. Other special types
Shuttle rotomolding machine: It has two shuttle machines, which can work continuously and improve production efficiency.
Clamshell rotational molding machine: It adopts dual-axis rotation, which can perform heating and cooling processes in the same working room, saving space.
To sum up, there are various types of rotational molding machines. Users can choose the suitable type of rotational molding machine according to their own production needs, product characteristics, budget and other factors.