Diameter-adjustable double-screw plasticizing extruder for plastic modification process

Abstract

The invention discloses a diameter-adjustable double-screw plasticizing extruder for a plastic modification process. The diameter-adjustable double-screw plasticizing extruder for the plastic modification process comprises a machine body, wherein a machine support is arranged at the bottom end of the machine body; mounting blocks are arranged at the side ends of the machine support; a discharging groove is formed in one end of the top of the machine support; a storage bin is arranged in the middle of the top end of the machine support; a discharging pipe is arranged on one side of the storage bin; an extrusion bin is arranged at the top end of the storage bin; a cooling liquid through pipe is arranged on the inner layer of the extrusion bin; a built-in oil groove is formed in the inner wall of the extrusion bin; an extrusion screw is arranged at the middle end of the inner side of the extrusion bin; and parallel double screws are arranged at the middle end of the extrusion screw. A barrel body and the screws are made of special alloy for a plastic machine, so that the cleanliness of the surfaces is very high, the friction resistance during plastic propelling is reduced, and meanwhile, color changing and cleaning are convenient; and the internal environment of the device is designed to be relatively vacuum, so that the conditions are necessary conditions for high-requirement plastic extrusion production.

Description

Technical field: [0001] The invention relates to the technical field of plasticizing extruders, in particular to a diameter-adjustable twin-screw plasticizing extruder for plastic modification technology. Background technique: [0002] Plastic modification is a relatively broad concept. Whether it is through physical, chemical, mechanical or other means to improve the original performance of the resin or improve it, it is called plastic modification. The application range of plastic modification is wide, and in the plastic modification process Among the extruders, the twin-screw plastic extruder is a high-quality and efficient plastic extrusion equipment; however, most of the current twin-screw plasticizing extruders are fixed-diameter, and the diameter cannot be adjusted. Too many cuts will increase the shear heat of small materials, the physical properties will decrease, and the chemical properties will not meet the requirements. In the plasticizing extrusion process, in o...

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Problems solved by technology

[0002] Plastic modification is a relatively broad concept. Whether it is through physical, chemical, mechanical or other means to improve the original performance of the resin or improve it, it is called plastic modification. The application range of plastic modification is wide, and in the plastic modification process Among the extruders, the twin-screw plastic extruder is a high-quality and efficient plastic extrusion equipment; however, most of the current twin-screw plasticizing extruders are fixed-diameter, and the diameter cannot be adjusted. Too many cuts will increase the shear heat of small materials, the physical properties will decrease, and the chemical properties will not meet the requirements. In the plasticizing extrusion process, in order to improve the extrusion efficiency or facilitate the disassembly and assembly of components, the fixed diameter of the twin-screw , which makes the working process too troublesome. The barrel is the core part of the extruder. There is a lot of friction resistance in the hopper and the screw, which makes the device wear too much, and the through holes in the barrel are often deposited with carbon and rust. Blocking phenomenon, and the current ordinary twin-screw extruder needs to use a large amount of cleaning material to clean the machine when changing the color, and manually clean it, which is a waste of time and raw materials, and it is inconvenient to use.

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