Hydraulic bottle blowing machine VS servo bottle blowing machine, what are the differences?

In addition to making money, can buying a bottle blowing machine also save money?

Hydraulic bottle blowing machine and servo bottle blowing machine are two common plastic bottle blowing equipment. They have some important differences in operating principles and technologies. Here’s how they compare, especially in terms of productivity and energy savings：

Operating principle：

Hydraulic bottle blowing machine: uses a hydraulic system to provide power and controls the oil pressure to achieve the purpose of bottle blowing. Such machines typically include components such as hydraulic pumps, cylinders, and control valves.
Servo bottle blowing machine: uses servo motor as the power source, and achieves precise motion control by controlling the speed and torque of the servo motor. This kind of machine has higher control precision and flexibility.

Productivity：

Servo blow molding machines generally have higher production efficiency than hydraulic blow molding machines. Because servo motors can precisely control movement and acceleration, they can achieve faster production speeds and higher production quality. In addition, the servo system can also achieve fast start and stop, reducing downtime during the production process.

Energy saving：

Servo blow molding machines are generally better than hydraulic blow molding machines in terms of energy saving. Although servo motors may have a higher initial cost, they are generally more efficient than hydraulic pumps. This is because servo motors only consume energy when needed, while hydraulic systems require a continuous supply of oil pressure to maintain operation, so they consume more energy throughout the entire production cycle. In addition, the servo system can further save energy by recovering braking energy.

Regarding the recent use of servo motors in bottle blowing machines, the key differences are summarized as follows：

1. 1) The power saving capability saves 40% of electricity compared to traditional variable pumps and 60% compared to traditional fixed pumps, thus reducing electricity costs.
2. 2) When the machine is running, the longer the standby time, the better the energy saving effect.
3. 3) It can effectively reduce the temperature of hydraulic oil and has a great effect on extending the life of internal oil seals such as hydraulic parts and hydraulic cylinders.
4. 4) The low calorific value can suppress the rise in oil temperature and save cooling costs, significantly reducing the frequency of hydraulic oil replacement.
5. 5) The energy-saving servo motor system can reduce oil consumption by 45% compared with traditional motors, and the fuel tank volume is relatively small.
6. 6) The energy-saving servo motor adopts metering electronically controlled closed-loop control (Close-loop). Its pressure and flow response speed is faster than the proportional pressure and flow response. It is relatively outstanding in pressure holding capacity and low-speed performance, and can respond within 0.01 seconds. Achieve 100% performance within 10 seconds, resulting in high precision of finished products.
7. 7) The noise is low when maintaining pressure, generally as low as 60 decibels, which is conducive to long-term pressure maintaining operations.
8. 8) The energy-saving servo system simultaneously controls the pressure and flow of the variable-capacity pump according to different actions to ensure that it operates under the best working conditions (such as low oil temperature and electronic control feedback design), which can effectively extend the servo Motor life and reliability.

The following is a comparison table of the power consumption of traditional hydraulic and servo motors when used on bottle blowing machines
It is especially obvious in the state of blow molding, cooling and standby.

・Comparison of power consumption between 65-inch hydraulic servo motor and traditional hydraulic motor

・Power consumption curve of plastic bottle blowing machine hydraulic servo and hydraulic traditional motor molding process

Video link： https:/ /www.youtube.com/watch?v=t-hCdZQtJEs

Share here, the equipment purchased by our Bangladeshi customer - a four-head multi-layer equipment with window lines/double stations, which can produce 8 finished products/bottles in one cycle. This machine is used for the production line of pesticide bottles/chemical bottles. In addition to the automated design, automatic waste removal and Japanese MOOG thickness control settings, a servo energy-saving drive is configured for energy-saving purposes in the mold moving part. In response to limited energy in the future and the continued rise of electricity bills, there is a budget. of customers generally purchase servo energy-saving systems.

In addition, in response to the current issue of green energy recycling, the raw materials of this double-layer equipment are made of new materials PE30% old materials (recycled materials) REPE/70% (customers can adjust the ratio of new and old materials by themselves).

In summary, servo motor blow molding machines are generally superior to hydraulic blow molding machines in terms of production efficiency and energy saving. Although servo systems have a higher initial cost, they often deliver greater energy savings and productivity improvements over the long term and are therefore widely adopted in many applications.

If you have bottle blowing or blow molding needs, please feel free to contact us !

The Xin Xin bottle blowing machine can be equipped with a servo motor. View Xin Xin Fully automatic extrusion hollow blow molding Machine P series.