Blow Molding Machine Is Divided Into Linear And Rotary
Jan 11, 2023
Rotary blow molding machine, high output, good versatility and stability, the same machine can produce bottles with different necks and bottle shapes, but the price is higher, suitable for customers with higher output;
The linear blow molding machine has moderate output, low price, and general compatibility. Due to the influence of transmission chain and other structures, bottles with large volume changes need to be equipped with different types of linear machines, suitable for customers with medium and low output.
Analysis and comparison of rotary blow molding machine and linear blow molding machine.
1. Plane layout: The rotary blow molding machine is composed of four major parts: preform unscrambler, heating machine, main engine and electrical. Each part can be separated separately to facilitate disassembly and transportation. It is suitable for continuous and high-speed production, and the blowing direction is positive. Blowing; linear blow molding machine has more layout methods, intermittent production, and the blowing direction is reverse blowing; one is that the host and heating are arranged separately, which can realize continuous production, and the blowing direction is forward blowing; this layout method, is the key to increasing production.
2. Production efficiency: The advantages of rotary blow molding machine are large number of mold cavities, high output, continuous production, convenient operation and maintenance, and gradually improved equipment stability; linear blow molding machine, the structure and layout of domestic manufacturers have their own advantages. The unique aspect is worthy of study and reference.
3. Transmission system: The linear machine is mainly driven by a servo motor, and the heating chain is used for intermittent movement. A few of them use cylinders to drive the heating chain for intermittent movement. It is prone to blank clamping or interference with the heating chain; all-electric linear machines, the host and heating are driven by servo motors, and the synchronization is easy to control; most rotary machines are driven by geared motors, driven by synchronous belts, and the blanks are fed and discharged The bottles run synchronously, and the origin detection is easier.
4. Formwork structure: Due to the different structures of the two types of models, the structure of the formwork is very different. The formwork of the rotary machine is composed of a movable formwork, a fixed formwork, a middle mold set and a mold. The formwork material is generally Ductile iron or carbon steel welding.
5. Mold locking mechanism: The mold locking mechanism is to prevent the expansion of the mold during the bottle blowing process, and the size of the expansion modulus directly affects the quality of the bottle. The foreign all-electric linear machine is driven by a servo motor or a cam mechanism. It can open and close the mold once in one rotation, and the output can be increased or decreased at any time. The vibration caused by the mold opening and closing is much smaller than that driven by hydraulic pressure or cylinder. The mold method is an ideal choice for linear machines.
