How did the bottle get blown out?
Release time:
2024-07-19 17:27
Source:
high speed rotary bottle blowing machineIt is a machine that can blow plastic particles (soften into liquid) or well-made bottle embryos into bottles through certain technological means. For example, tea beverage bottles, carbonated beverage bottles, oil bottles, etc. commonly used in our lives are all blown by bottle blowing machines.
At present, with the rapid development of packaging machinery, bottle blowing machines put forward higher requirements in terms of production efficiency, full automation and energy saving. Among them, the high-speed rotary bottle blowing machine has improved the production efficiency and production quality of various types of embryos from 0.1 liters to 2.0 liters by virtue of its high efficiency of 100,000 bottles per hour, and has become a shining star of packaging machinery.
Servo systems play an important role in the application of high-speed rotary blow molding machines. It ensures that in the whole process of bottle blowing, each system can produce stably and accurately, and the synchronization is extremely high, providing a higher level of production quality and efficiency, and meeting the large demand for PET bottles in various industries.
How does the high-speed rotary bottle blowing machine blow plastic into a bottle? It mainly goes through four steps.
First of all,In-group heating
The bottle embryo is transported to the heating zone by the whole column machine in order to heat the inner and outer walls evenly.
(Note: Reference source three-axis design)
Secondly,Screw pitch
The heated blanks are efficiently and synchronously clamped by variable pitch screw grippers and transported to the blow mold.
(Note: Reference source three-axis design)
The third step,Stretch forming
The sterile high-pressure gas in the mold is blown into the bottle blank through the middle of the core rod, so that it expands to close to the mold wall, and then cools.
The fourth step,Demoulding material
Finally, the blown PET bottle is removed from the forming mold through the bottle-out jaws, which is our common bottle.
The above four steps seem simple, but they are not simple at all. The motion control of each link needs to maintain high-speed, stable and efficient synchronization. A slight delay in one link or a few more seconds may lead to production problems.
For instance,①Difficulties in motion control in the heating group
What kind of running speed can ensure that the inner and outer walls of each bottle embryo are evenly heated, instead of the heating time being too short, resulting in white fog, crystallization and other problems during bottle embryo blowing, or the heating time is too long.
②Difficulties in Motion Control of Screw Group
For example, the distance between the bottle blanks in the heating guide rail is 40mm, while the distance between the bottle blanks in the heating guide rail is 80mm. What kind of speed control is needed between the two sides to ensure that the variable pitch screw jaws can always synchronize with the bottle blanks and accurately clamp each bottle blanks without omission.
(Note: Reference Figure Source: Kuang Jianlin. Research on Key Technologies of High Speed Cyclotron Bottle Blowing Machine [D]. Guangdong: South China University of Technology, 2014.)
③Difficulties in Motion Control of Molding Group
How to ensure that a series of actions and process time such as mold opening, stretching rod rising and falling, pre-blowing, high-pressure blowing and delay of each step match perfectly with each other? A slight error in time and action coordination will cause problems such as bottle embryo not forming and quality decline.
Different from the traditional bottle blowing machine, the high-speed rotary bottle blowing machine adopts the all-electric servo control system, which has a high degree of automation, ensures the efficient, stable and synchronous operation of the whole process, effectively shortens the mechanical action cycle, ensures product quality, improves production efficiency and reduces production costs.
Servo feeding
The conveyor belt adopts servo system for motion control, which realizes fast, efficient and stable feeding effect.
Servo screw sub-germ
The servo system is used to divide the embryo equally. The stroke and speed of the servo motor are simple to adjust, and the parameters only need to be adjusted on the operating table. The complex process of variable pitch screw clamping jaws is completed by digitization, which is safe, fast and accurate. Moreover, the single-channel embryo division method controlled by the servo motor is faster and more accurate than the traditional multi-channel embryo division and cylinder embryo division method.
servo die opening and closing
The cam linkage servo drive system is used to integrate the actions of mold opening and closing, mold locking and bottom mold, which greatly shortens the bottle blowing cycle, improves the output, and achieves the effect of high efficiency and energy saving.
Servo stretching
The servo motor drives the rack and pinion to stretch. The double guarantee mode of photoelectric limit and mechanical limit prevents the stretching rod from touching the bottom mold, and the stretching rod can be automatically adjusted with high flexibility.
Reference diagram of control series structure
Faster response
It has the high response performance required by high-speed rotary bottle blowing machine, which can meet the high-speed requirements of bottle blowing machine such as embryo feeding, mold opening and closing, etc.
High synchronicity
The use of higher performance of the main control chip, communication and interaction capabilities to further enhance, so that the scoring embryo, molding and other process results are better.
stable and reliable
Load adaptive, in-place shock absorption, etc., can automatically identify parameters, assist variable pitch screw jaws, stretch rod long-term high-speed operation to maintain stability.
Product complete
The power covers 50W ~ 22kW to meet the needs of various types of bottle blowing machines.
Simple operation
Adopting the software of the servo driver, the debugging is simple and easy to use.
By adopting the all-electric servo control system, the performance of the high-speed rotary bottle blowing machine is greatly improved. With the continuous improvement of product performance and innovative technology, we hope to bring more efficient, accurate and reliable solutions to the packaging machinery industry to ensure that users get excellent experience in the process of using.
Blow molding machine, high-speed, servo, control, synchronization, rotation, servo drive, servo motor, Otong
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