12000 BPH Blow Molding System , SGS Rotary Blow Molding Machine
1. Structural features of automatic rotary bottle blowing machine
12000 bottles per hour (rotating bottle blowing) fully automatic bottle blowing machine developed and developed products independently for our company. It has the characteristics of simple and convenient operation, stable and efficient and high yield.
Our company adopts advanced high-pressure gas recovery technology and pressurized reuse technology to re-pressurize the recovered high-pressure gas for use and use part of the recovery as the low pressure required for bottle blowing. This item can save 45% of the energy consumption of compressed air and eliminate the need to purchase additional low-pressure air compressors.
The heating furnace is designed with a preform turning mechanism. After the preform enters the heating furnace, the bottle mouth is turned down by the turning mechanism, and the bottle is heated in the furnace by the infrared lamp. Before leaving the heating furnace, it turns again and enters the main blowing wheel. The purpose is to protect the bottle. Mouth, 3025, 2925, 1881, etc. The mouth of the bottle is thin and short, and it is easy to deform during heating. After turning over, the mouth of the bottle is facing down. The shading plate, cooling water channel, fan, etc. The overturned heating furnace can save energy by at least 20%. At the same time, the specially designed ventilation cooling device and protective plate cooling water in the heating furnace can prevent the furnace temperature from being too high and the threaded part of the special air duct cold water embryo pipe. The cooling air is controlled by the frequency conversion fan, and the arbitrary wind power can be adjusted to make the furnace temperature constant and consistent. ; And extend the life of the infrared lamp.
2. The composition of the bottle blowing machine
The automatic rotary bottle blowing machine is a high-speed two-step bottle blowing machine successfully developed by our company absorbing the most advanced bottle-making technology in the world today. The machine is mainly composed of an automatic feeding device (hopper, lifting mechanism, and unloading mechanism). Track), heating furnace, main blowing machine, electrical control system and pneumatic control system.
-Structure and function of bottle blowing machine:
1. Feeding device of elevator;
2. Star wheel for blowing bottle into embryo;
3. Preform heating furnace;
4. Preform conveying plate;
5. Main turntable;
6. Bottle outlet;
7. Control system Operation console;
8. Main electric cabinet;
9. Air and water pipeline interface
3. Structure and function of blow molding machine
-Blowing process flow chart
The preforms are added to the hopper → the feeding conveyor belt is raised to the entire column mechanism → the preforms are arranged in order → the feeding track → the heating furnace of the blowing machine → the manipulator takes the heated preforms out of the heating furnace and sends them to the mold → the mold is closed and locked Bottle blowing → bottle blowing forming → bottle taking manipulator takes out → bottle outlet
-Hopper and feeding mechanism
(Schematic diagram of upgrading the whole row of embryo management system)
|3||Preform assembly machine|
|4||Whole row machine ladder frame|
A certain amount of preforms are stored in the hopper to ensure the continuity of production; the conveyor belt in the hopper lifts the preforms to the preform handling mechanism so that the preforms are neatly arranged in a row, and the preforms enter the heating furnace of the blowing machine along the feeding track . The preforms are put into the hopper and are monitored by computer without assistance. The amount of preforms can be automatically adjusted according to the production speed; according to different types of preforms, the output speed can be adjusted arbitrarily to make the conveying capacity of preforms consistent with production; rotation The plastic conveyor belt and rotating roller convey to ensure that the preform is not damaged and polluted during the transfer process.
The preforms that enter the equipment in a whole row are conveyed to each embryo holder through the star wheel guide turntable. After the embryo holders are taken to obtain the preform, they are sent to the heating furnace for heating. The heating furnace uses infrared lamps to heat the preform, and each section of the infrared lamp can be independently adjusted. The fan at the bottom of the heating furnace performs heat looping to make the temperature in the furnace uniform.
When heating, the preform rotates while moving forward in the furnace, so that the preform wall is evenly heated. After heating, the preform has high elastic properties, so that it can be stretched biaxially; its temperature range is 90-100°C. The heat of the heating furnace is controlled by the number of lamp tubes, the overall temperature setting, the power of the oven and the heating ratio of each section.
The heating control of the infrared lamp tube is closed-loop control. After setting the furnace temperature and the embryo temperature, the computer automatically monitors to ensure that the temperature fluctuates within the set value, avoiding the fluctuation of the temperature between day and night and affecting production.
Infrared heating lamp
Furnace cooling fan
Cold water plate-cooled by water to protect the preform mouth
from thermal deformation during heating
In order to prevent the bottle mouth from being heated and deformed, the heating furnace is designed with a preform turning mechanism. After the preform enters the heating furnace, the bottle mouth is turned down by the turning mechanism and heated in the furnace by the infrared lamp. At the same time, the specially designed ventilation cooling device and protective plate cooling water in the heating furnace can prevent the furnace temperature from being too high and the threaded part of the cold water embryo pipe of the special air duct. The cooling air is controlled by the frequency conversion fan, and the arbitrary wind power can be adjusted to keep the furnace temperature constant Consistent; and extend the life of the infrared lamp; after the preform is heated, the infrared automatic detector will accurately measure the temperature of the preform, and feed the temperature data back to the computer for automatic control, so that each preform is heated uniformly and the temperature is the same , To ensure the stability of the blowing process and high yield; the specially designed rapid blowing cooling device ensures that the preform staying in the heating furnace is quickly cooled and can be recycled and reused when the equipment fails. There is a specially designed ejection device for bad preforms to detect the deformed preforms.
The heated preform in the embryo take-out seat is unloaded to the preform output rail through the unloading sleeve, and the preform is sent to the blowing mold through the manipulator device, sealed by the sealing seat, and the stretching seat is stretched. Two-stage air pressure (pre-blowing air pressure and high-blowing air pressure) is passed to stretch the preform into a bottle. According to the process requirements, the cold-filled bottle blowing mold will pass through cooling water, and the hot-filled bottle blowing mold will be heated by heat conduction oil, which is monitored by the host computer during the entire blowing process.
-Bottle inspection and output
After the bottle blowing process is completed, the robot device takes the bottle out of the mold, and the blown bottle is sent to the output track, which can be directly connected to the air duct of the filling line for in-line production or directly The conveyor belt is connected.
-Special formwork system
The specially designed mold base system ensures rapid and accurate mold replacement and good interoperability; the mold base is equipped with an air pressure balance device, so that the mold clamping line of the bottle is minimized when the bottle is blown and formed, which ensures the quality and performance of the bottle; special The sealing design minimizes the pressure when the embryo is in contact with the sealing head and will not damage the preform.
(Mould base mold diagram)
-Working principle of bottle blowing machine
The main disk of the equipment rotates at a high speed, and the rotation angle of the equipment is detected by the encoder on the top of the equipment and the sensor installed on the main turntable and fed back to the computer, and then the computer sends instructions to execute according to the program (angle) set by the operator The mechanism (solenoid valve) performs the specific actions required at a specific time in the blowing process, so as to complete the two-step blowing process during the rotation of the equipment and produce qualified products.