How to choose a rolling molding machine
Rolling molding machine is a type of plastic machinery that applies the basic principles of rolling molding products to plastic forming equipment.
Types of rotational molding machines:
1. According to the heating method, it can be divided into natural gas direct heating, hot box heating (electricity, oil, gas, coal heating), thermal radiation, thermal substance heating, etc;
2. Divided into swing type and two axis turntable type according to the type of rotation;
3. According to the method of arm movement, it can be divided into fixed fixed arm, pendulum type, shuttle type, and rotary type (two types: the free arm rotary type where each arm can move freely and the non free arm rotary type where each arm is connected and moved together);
4. Divided into two arms, two arms, three arms, four arms, etc. according to the number of arms;
5. According to the hot box, it is divided into dynamic hot box and fixed hot box.
The common and universal models and specifications of rotational molding machines are:
1. Double arm direct fire heating swing type;
2. Dual arm hot box heating swing type;
3. Dual arm hot box heating with two axis rotary table (dynamic hot box and fixed hot box);
4. Dual arm hot box heating with two axis rotary table (two types of parallel and vertical movement) (dynamic hot box and fixed hot box);
5. 3-arm or 4-arm hot box heating can be freely rotated vertically (dynamic hot box and fixed hot box);
6. 3-arm or 4-arm hot box heating is not a random arm rotating vertical type (dynamic hot box and fixed hot box).
Model selection of rotational molding machine:
Describe the common indicators of the rotational molding machine: type+number of arms+allowable large rotation diameter (or rotation diameter) of the mold shell+energy method, etc.
1. Based on the size, type, and production volume of the larger products to be produced according to the plan, determine the size and type of machine equipment rotation diameter.
2. Based on the estimated project investment size, decide on the type of machinery and equipment, heating method, and automation technology level.