Extruder screw, extruder, and method for producing an extruder screw

A technology of machine screw and extrusion shaft, which is applied in the field of twin-screw extruders, can solve the problems of torque limitation and damage to the extrusion section, and achieve the effect of high wear resistance and low cost

Active Publication Date: 2014-04-30
KRAUSSMAFFEI BERSTORFF GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase in torque is limited since exceeding a certain critical torque will damage the extruded section

Method used

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  • Extruder screw, extruder, and method for producing an extruder screw
  • Extruder screw, extruder, and method for producing an extruder screw
  • Extruder screw, extruder, and method for producing an extruder screw

Examples

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Embodiment Construction

[0032] FIG. 1 shows an extrusion segment 10 according to the invention, which has an internal toothing 12 , by means of which it can be fitted in a rotationally fixed manner on a complementary external toothing of a mandrel of an extrusion shaft. The internal toothing 12 has a meshing profile P in which Figure 1c The mating profile is shown in .

[0033] Figure 1a It is shown that the extruded section 10 comprises an outer helix 14 . Or, as an alternative, the extrusion section 10 can have, for example, a conveying structure, a shaping structure or a mixing structure.

[0034] The extruded section 10 has a first end side 16 and a second end side 18 opposite the first end side 16 , which runs parallel to the first end side 16 . The internal toothing 12 has a toothed longitudinal axis L 12 , the extruded section 10 has a width B along the toothed longitudinal axis 10 .

[0035] Figure 1b Shown is Figure 1a Local segment A in . It can be seen that the internal toothing...

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Abstract

The invention relates to an extruder screw comprising an extruder shaft and at least one extruder segment (10). The extruder shaft comprises a prismatic mandrel having external teeth and a longitudinal mandrel axis. The extruder segment (10) has internal teeth (12) and a longitudinal internal-teeth axis (L12) and can be slid onto the mandrel, such that the extruder segment (10) can be connected to the mandrel for rotation therewith. The internal teeth (12) have a profile having a meshing profile and, in an inner area between the first (16) and second (18) end faces of the extruder segment (10), comprise a prismatic main profile that has a main cross-section. Furthermore, the internal teeth (12) of the extruder segment (10) have an edge profile adjacent to at least one end face (16) of the extruder segment (10), which edge profile has a smaller edge cross-section than the main profile at least in the area of the meshing profile.

Description

technical field [0001] The invention relates to an extruder screw comprising an extrusion shaft and at least one extrusion section. The extrusion shaft consists of a prismatic mandrel with external teeth and a longitudinal axis of the mandrel. The extruded section has internal teeth and an internally toothed longitudinal axis and can be placed on the mandrel such that the extruded section can be connected to the mandrel in a rotationally fixed manner. The internal toothing has a profile with a toothing profile and, in the inner region between the first end side and the second end side of the extrusion, a prismatic base profile with a base cross section. [0002] According to a second aspect, the invention relates to an extruder, in particular a twin-screw extruder, comprising the extruder screw of the invention. [0003] According to a third aspect, the invention relates to a method for manufacturing an extruder screw or extruder according to the invention. Background tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/08B29C47/60F16D1/10B29C48/03B29C48/395B29C48/57B29C48/645B29C48/67
CPCF16D2001/103B29C47/622B29C47/60B29C47/0825B29C47/0009B29C47/38F16D1/101B29C47/0844B29C47/0803B29C47/6056B29C48/2564B29C48/57B29C48/395B29C48/505B29C48/507B29C48/03B29C48/402B29C48/67Y10T29/49242B29C48/2522B29C48/645
Inventor M·贝林
Owner KRAUSSMAFFEI BERSTORFF GMBH
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