Machine head pelletizing device for screw extruder

Abstract

The invention discloses a machine head pelletizing device for a screw extruder. The machine head pelletizing device comprises a machine body and further comprises a cooling mechanism, a driving mechanism and a pelletizing mechanism, wherein, the cooling mechanism is connected to the upper portion of one side of the machine body through bolts, the driving mechanism is arranged between the machine body and the cooling mechanism, the pelletizing mechanism is arranged in the machine body, and the output end of the pelletizing mechanism is attached to one end, inserted into the machine body, of the cooling mechanism for use. According to the machine head pelletizing, the problems that a large amount of dust is attached to the surface of a formed material whether the material is subjected to air cooling or water cooling in the prior art, and cleanliness of a pelletized product cannot be guaranteed are solved; a structure of the pelletizing device is improved and optimized, so that the pelletizing device can conveniently guide materials, the environment around the materials can be cooled while the materials are guided, the materials are assisted to be rapidly cooled, the extruded and molded materials can be conveniently cooled and solidified, and the materials are conveniently pelletized.

Description

technical field [0001] The invention relates to the technical field of pelletizing equipment, in particular to a head pelletizing device for a screw extruder. Background technique [0002] The screw extruder heats and melts the polymer solid material into a melt, and pushes the viscous material through the extrusion of the screw to make it pass through the die and become a continuous body with a cross-sectional shape similar to the shape of the die. equipment. [0003] Existing screw extruders are generally equipped with a pelletizing mechanism at the position of the machine head, which is convenient for pelletizing the extruded material. Due to the high temperature of the extruded material, the extruded material is relatively soft, resulting in It is inconvenient to pelletize the material, so it is often necessary to place a long water tank between the pelletizing device and the head of the screw extruder to cool the extruded material, and there is also a place between the...

AI Technical Summary

Problems solved by technology

[0003] Existing screw extruders are generally equipped with a pelletizing mechanism at the position of the machine head, which is convenient for pelletizing the extruded material. Due to the high temperature of the extruded material, the extruded material is relatively soft, resulting in It is inconvenient to pelletize the material, so it is often necessary to place a long water tank between the pelletizing device and the head of the screw extruder to cool the extruded material, and there is also a place between the mechanism and the pelletizing device. On the conveyor belt, and set up a fan on the conveyor belt, the extruded material is cooled by air cooling, so as to facilitate better pelletizing of the extruded material. Currently, the cooled material is cut The method of granulation mostly adopts the method of cutting the material with a hob

[0004] The following problems exist in the existing pelletizing method of extruded materials: (1) When the existing materials are air-cooled, the fan will stir the air and blow the airflow to the materials, resulting in a large amount of dust on the surface of the molding materials; (2) The existing water-cooling method for materials requires frequent water changes. If the water is not changed, long-term use will make the water dirty, and the materials that have passed through dirty water cannot guarantee the cleanness of the pelletized products. If the water inside the tank is often cleaned Replacement is very troublesome, which affects work efficiency; (3) Although the existing hob can quickly pelletize the material, the hob is inconvenient to disassemble, repair and replace, which makes the hob of the entire pelletizing device inconvenient for later maintenance and maintenance

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