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Plastic Granulator must be inspected and tested before being put into production

Jan. 03, 2020

Plastic Granulator system:

In order to keep the plastic granulator's granulation system in good working condition, the newly installed or overhauled plastic granulator must be inspected and tested before it is officially put into production and application:

Plastic Granulator

Plastic Granulator

① Adjust the moving stroke of the granulator so that the nozzle can bear against the mold gate sleeve. Pay attention to adjusting under low pressure and carry out adjustment after the mold is closed to ensure the safety of the mold.

② Check whether the nozzle used is suitable for the material being processed. If it is not suitable, it should be replaced and the assembly line can be smoothly connected to the front of the barrel. Before installing the nozzle, pay attention to whether the flow passage is smooth.

③ Adjust the metering stroke and anti-spitting stroke of the screw through the stroke switch or displacement sensor, and pay attention to whether the stroke switch or sensor is smart and reliable.

④Adjust the pressure of granulation and holding pressure. The pressure switching from the granulation pressure to the holding pressure is mainly adjusted by the time relay.

⑤ Adjust the pressure of the back pressure, the pressure of the nozzle control hydraulic cylinder and the pressure of the granulator seat cylinder. These were tested by adjusting the rocker of the hydraulic drive system relative to the valve.

⑥ Check whether the moving guide of the granulator is clean and greased.

Run the pre-plastic screw for 5 seconds in the air, and check whether there is any abnormal scraping sound, and whether the opening and closing door of the silo is normal.

As a Central Granulator Suppliers, share with you the classification of plastic pelletizer hobs

The plastic pelletizer hob needs to be suitable for different needs of users and has a lot of choices in the chemical composition of the blade material for milling different people. It needs a suitable steel knife angle, which not only keeps the sharpness of the steel knife, but also makes the steel knife have certain strength and is always in use To the collapsed blade. It requires a good quenching and tempering operation process to achieve a suitable hardness of the blade and a small internal stress, so that it will not be deformed during operation.

The reamer drill is a helical gear milling cutter arranged along a cylinder or a cone, and the cylindrical gear, worm gear, and other cylindrical workpieces with teeth (see Gear Machining, Pinion Gear) are processed by the production method. According to different uses, hobs are divided into gear hobs, worm hobs, non-involute stretch hobs and fixed hobs.

Classification of plastic pelletizer hob

Diamond drill hobs can also be machined to produce hardened pinions. This hob is usually suitable for single-tooth welding structure design. It has a negative rake angle of 30 ° and scrapes off a layer of tooth surface during milling. Internationally, the hob size tolerance is divided into AA, A and B. General national standard hob is applicable to AA grade. Ministry standards and enterprise standards apply to Class A. The sprocket hob requires low accuracy and is generally suitable for class B. The key lies in the production of a little precision pinion, and some international even require AAA hob. Our company also sells Hopper Dryer China, welcome to consult.

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