Tech-Long blow molding equipment with steady improvement in technology

In the liquid food and other packaging fields, PET bottles occupy a pivotal position. They are widely used for holding various types of beverages, such as water, fruit juice beverages, tea beverages and milk beverages, as well as pharmaceuticals, cosmetics and other industries. This determines PET blowing. Bottle machine broad market prospects.

The development of China's PET bottle blowing machine experienced two stages: semi-automatic blowing machine and automatic blowing machine. The R&D and design personnel of the PET bottle blowing machine fully combined with the ever-improving blowing bottle technology and completed the leap one after another.

Tech-Long's latest RJM16 blow moulding machine can be said to be a new level of high speed for the RJM series blow moulding machine. It will give customers more choices in the selection and wiring with high speed and high efficiency, and let customers experience the most practical cost efficiency. The launch of RJM16 will be a new starting point for the RJM family and it will be the cornerstone of RJM18, RJM20 and RJM24.

Technical advantages of RJM16

At present, this equipment is under intense equipment and is expected to be put on the market in August 2005. RJM16 has made a great leap in the mechanical properties of the first-generation fully automatic rotary blow molding machine RJM8 from Tech-Long.

1. The preform is inverted and heated upside down. The bottle mouth and heating head are protected by cooling water and the mouth is not deformed.
2. The infrared heating lamp is coated on the back with a reflective layer, which has high heating efficiency; each lamp can be independently adjusted to the distance from the preform, effectively saving energy.
3. The heat lamp box can be turned 90 degrees to the outside to facilitate the replacement of the lamp.
4. The heating head can be quickly replaced according to the type of preform, without having to disassemble the entire heating chain.
5. The infrared thermometer can detect the temperature of different parts of the preform, and fed back to the control system automatically or manually to make the preform get the best temperature curve.
6. The best kinematics analysis, designed a reasonable double cam mechanism and open and close mold rails.
7. Stretch cylinders and mechanical guides make the preform stretch ratio more reasonable.
8. Rotary locking mechanism, mold opening and closing noise is low.
9. Blowing station has good compatibility, easy and fast die change.
10. The bottom mold installation quick-change mechanism can quickly replace the bottom mold after venting.
11. In the mold set, the bottom mold heating (or cooling), the neck mouth can be added to the cooling of the insert.
12. The best blowing quality and the highest production efficiency, cold-filled bottles (600ml) up to 24000 bottles / hour; Crystal mouth hot-fill bottles (500ml) up to 18000 bottles / hour.
13. Touch type human-machine interface: The touch screen with quick pull-down menu provides a simple and fast management method for the machine. For the convenience of the operator, the graphical symbols, icons and colors used on the interface are all passed through. Especially carefully selected. During the working process, the equipment can modify the blowing process parameters, such as preform heating temperature, pre-blowing, blowing time and other parameters.

Superior safety

In addition, RJM16 automatic blow molding machine is equipped with the following perfect mechanical electrical safety protection device, thus ensuring the operator's safety and long-term stable operation of the equipment.
(1) The safety of the operator The equipment adopts a fully enclosed structure and is equipped with a complete and reliable safety gate system to ensure the safety of the operator.
(2) Equipment safety The mold protection device adopts mechanical electrical means to avoid damage to the equipment when the mold is not smooth; the mold locking protection device also ensures the safety of the mold and the mold frame through mechanical and electrical means. The double limit detection of the bottom mold protection device and the open mold protection device ensures that the device cannot open the mold and drop the bottom mold at high speed. The sealing protection device uses multi-point detection technology to maximize the safe operation of the robot and the tension system. The bottle inspection ensures the safe operation of the incoming robots and molds.

Key station process

Mold frame
The rotating formwork part greatly improves the production efficiency and reduces the production cost; the adjustment of the mold temperature is regulated by the thermostat of the mold thermostat; the design of the mold formwork of the mold frame and the selection of materials have been repeatedly optimized and combined.
Heating machine Stable infrared heating system. Divided into 8 heating zones, each heating zone is controlled individually. The FX2N-4AD module and Tech-Long man-machine interface continuously adjust the voltage of the infrared heating tube to achieve the purpose of controlling the temperature of each part of the preform. The wind deflector overcomes the air convection, which is conducive to stabilizing the heating environment and improving the ergonomics of heating. Air-cooled, water-cooled devices avoid bottlenecks and heat.

Manipulator The manipulator uses a cam-linkage mechanism, which has a simple structure, good synchronization and coordination.

The preform of the preform removal package is poured into the storage hopper; the preform is automatically lifted to the blank at the conveyor belt, after which the preforms are arranged neatly on the embryo guide, and the aligned preforms can rely on gravity. Automatically enters the equipment, adopts the international common embryo embryo method, the embryonic process completely realizes the automatic control, the embryonic embryo efficiency is high but does not damage the preform.

Temperature regulation In the incoming starburst, the heating head automatically obtains the preform continuously, and the uniformly rotating preform continuously passes through the heating zone to obtain a reasonable temperature distribution. The use of thyristor controlled infrared heating, each infrared light tube can be independently controlled temperature, broken lamp alarm detection. The air flow and bottleneck protection devices in the warming zone are carefully designed so that the preform has an ideal temperature profile, while the bottleneck is not affected by the heating. If necessary, the infrared thermometer can assist in automatic temperature adjustment. The heating temperature of the bottle preforms is displayed through the touch screen, which is intuitive and convenient.

Stretch blowing bottle cam mechanism to accurately control the opening and closing of the mold frame, simple and solid frame structure, making the replacement of the mold more convenient and faster. Through the touch screen, it can conveniently control the blowing parameters of each cavity, and has good fault diagnosis function. The special structure of the mouthpiece ensures the reliability of the sealing under various blowing pressures, and the original blowing control method improves the product yield.

After the bottle is blown, the robot automatically removes the bottle from the mold and accepts the quality test. If any unformed bottle is automatically removed, it will not be conveyed to the conveyor belt, ensuring the continuity of production. In addition, the bottles can be unloaded from the conveyor belt and stored in the bottle compartment, or they can be filled by lines.


Source: Packaging Machinery

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