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Double-screw extruder

A twin-screw extruder and screw technology, applied in the field of machinery, can solve the problems of large vibration and noise of gearbox transmission, poor working environment, etc., and achieve the effect of reducing noise

Pending Publication Date: 2019-10-08
JIANGMEN OCEAN POWER DIGITAL MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Extruders are mainly divided into single-screw extruders and twin-screw extruders. The existing twin-screw extruders use a motor to drive two screws with the same radial size through a gear box. The gear box of this extruder The transmission produces large vibration and noise, making the working environment worse

Method used

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  • Double-screw extruder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see Figure 1-9 , the present invention discloses a twin-screw extruder, which includes a barrel 10, a first screw 20, a second screw 30 and a drive mechanism 40; the barrel 10 is provided with an accommodating cavity, and the barrel 10 The side wall is provided with a feed port 11 connected to the accommodating cavity; the first screw 20 and the second screw 30 protrude into the accommodating cavity, and the first screw 20 and the second screw 30 extend into the accommodating cavity. Two screw rods 30 are mutually engaged, and described first screw rod 20 and described second screw rod 30 are all provided with a plurality of working sections, and the diameter of the working section of described second screw rod is different from the diameter of the corresponding working section of described first screw rod . In this embodiment, the diameter of the working section of the second screw 30 is smaller than the diameter of the corresponding working section of the first scre...

Embodiment 2

[0046] see Figure 10 , the second screw may not be provided with a feeding section, such a setting makes the second screw not need to bear a large torque, so the diameter of the second screw can be set to be smaller than the diameter of the first screw . The second screw is provided with a sealing section at a position corresponding to the feeding section of the first screw, and a polished rod portion 362 and a sealing thread 361 are sequentially arranged from the connection port to the discharge port. The barrel is provided with an inwardly protruding blocking portion 363, and the blocking portion 363 is located between the feeding section of the first screw and the sealing section of the second screw.

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PUM

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Abstract

The invention discloses a double-screw extruder. The double-screw extruder comprises a machine barrel, a first screw, a second screw and a driving mechanism, the machine barrel is provided with a containing cavity, the side wall of the machine barrel is provided with a feeding port communicating to the containing cavity, the first screw and the second screw extend into the containing cavity, the first screw and the second screw are meshed with each other, the driving mechanism is connected with the first screw and can drive the first screw to rotate, the first screw and the second screw each are provided with a working section, and the diameter of the working section of the second screw is different from the diameter of the corresponding working section of the first screw.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a twin-screw extruder. Background technique [0002] The principle of the extruder is to use a screw with a specific shape to rotate in a heated barrel. The surface of the screw is provided with working sections with different textures and shapes. Each working section has different functions, and the plastic sent from the hopper is forwarded. Extrusion makes the plastic melt evenly, and through the machine head and molds of different shapes, the plastic is extruded into continuous plastic layers of various shapes required. [0003] Extruders are mainly divided into single-screw extruders and twin-screw extruders. The existing twin-screw extruders use a motor to drive two screws with the same radial size through a gear box. The gear box of this extruder The transmission produces large vibration and noise, which makes the working environment worse. Contents of the invention [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/25B29C48/405B29C48/505
Inventor 石华山廖继科张希江陈力
Owner JIANGMEN OCEAN POWER DIGITAL MOTOR