Hollow blow molding manufacturers configure single-screw extruders

Author: MULAN -Plastic Molding Manufacturer

The extrusion blow molding hollow molding unit used by hollow blow molding manufacturers is basically a single-screw extruder, and the structure of the screw and barrel adopts different designs according to different raw materials. Extrusion blow molding hollow molding machine Ordinary single-screw extruder, the main components are usually as follows: motor, transmission mechanism (belt drive or coupling), gearbox, barrel, screw, electric heater, etc. So, how do hollow blow molding manufacturers debug blow molding machine equipment? Let's go into the factory and check it out. 1. When installing, it is necessary to ensure the straightness of the centerline of the screw barrel and coincide with the centerline of the drive shaft of the reducer. 2. The feed port of the machine barrel and the reduction box are usually cooled by cooling water to prevent the raw materials from the feed port from being agglomerated by heat and the temperature of the reducer from being too high. Before the barrel is heated, the cooling water at the feed port of the barrel must be opened. 3. Usually, when the machine is started, the temperature setting is 5~10°C higher than that during normal production, and it will be lowered back to normal temperature after normal production. After the barrel temperature reaches the set temperature, it usually needs to be kept warm for 30~60 minutes before the extruder can be started. 4. When the new machine is started for the first time, it is necessary to check the direction of the screw. Seen from the root of the screw, it should be counterclockwise. 5. When the hollow blow molding manufacturer starts the extruder, it first runs at a lower speed for a period of time, and then gradually increases to the normal production speed after the extrusion is normal. Before the plastic melt is not normally extruded from the die, the operator should stay away from the front of the die to prevent accidents. 6. For some special raw materials, such as PVC, PC, HMWHDPE powder, etc., when starting the extruder, it is necessary to adopt a slow feeding method to prevent the screw from being overloaded due to excessive load and causing the motor current of the extruder to and overheating. 7. In order to prevent metal foreign matter such as iron filings from entering the extruder and causing damage to the screw barrel, a magnetic frame is generally placed in the hopper. Hollow blow molding manufacturers install and debug blow molding product molding machine equipment to ensure that the machine is efficient and reliable. The pictures and texts are for reference only. For more industry information, please pay attention to Ningbo Mastery Proficient in molds | Hollow blow molding manufacturers |Since 1998, trustworthy.