Housing component for a multi-shaft screw machine and method for the production of a housing component

Patent metadata

Field	Value
Publication number	US-11478970-B2
Application number	US-201916541843-A
Country	US
Kind code	B2
Filing date	Aug 15, 2019
Priority date	Aug 16, 2018
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A housing component, for the production of a housing of a multi-shaft screw machine, includes a base body, in which at least two bores interpenetrating each other are configured. The bores extend in a conveying direction through the base body and are limited transversely to the conveying direction by an inner wall. The inner wall configures at least one first wall section and at least one second wall section such that the at least one first wall section is harder than the at least one second wall section. The wall sections, for example, are generated by material application. The housing component allows for a reliable wear protection and a positive influence on the material processing.

First claim

What is claimed is:

1. A housing component for the production of a housing of a multi-shaft screw machine comprising
a base body,
at least two boxes,
which are configured in the base body and are interpenetrating each other,
which extend in a conveying direction through the base body, and
which are limited transversely to the conveying direction by an inner wall of the base body,
wherein the inner wall configures at least one first wall section and at least one second wall section such that the at least one first wall section is harder than the at least one second wall section,
wherein the inner wall is configured in a profiled manner in a sectional view, and
wherein the at least two bores have continuously curved uninterrupted bore walls between opposing triangle regions of the inner wall with the at least one first wall section being configured as a separate material layer placed upon said continuously curved uninterrupted bore walls.

2. The housing component according to claim 1 , wherein the inner wall configures a plurality of first wall sections and a plurality of second wall sections, which are arranged alternatingly to one another.

3. The housing component according to claim 1 , wherein the at least one of the group comprising one first wall section and the at least one second wall section is arranged in the triangle regions of the inner wall.

4. The housing component according to claim 1 , wherein the at least one of the group comprising one first wall section and the at least one second wall section is arranged in at least one side region of the inner wall.

5. The housing component according to claim 1 , wherein the at least one of the group comprising one first wall section and the at least one second wall section is configured in a strip-shaped manner.

6. The housing component according to claim 1 , wherein the at least one of the group comprising one first wall section and the at least one second wall section runs in the direction of the conveying direction.

7. The housing component according to claim 1 , wherein the at least one of the group comprising one first wall section and the at least one second wall section runs around at least one central longitudinal axis of the at least two bores.

8. The housing component according to claim 1 , wherein the at least one second wall section is configured as a material layer placed upon the continuously curved uninterrupted bore walls.

9. A multi-shaft screw machine comprising
a housing, which comprises at least one housing component according to claim 1 ,
at least two housing bores configured in the housing and interpenetrating each other, and
at least two treatment element shafts arranged in a pivotable manner in the housing bores.

10. The multi-shaft screw machine according to claim 9 , wherein the housing comprises at least two housing components, which are configured identically.

11. The Multi-shaft screw machine according to claim 9 , wherein the housing comprises at least two housing components, which are configured differently.

12. The housing component according to claim 1 , wherein:
each of the at least two boreholes has a central longitudinal axis;
the first wall section has an inner surface defining a portion of one of the at least two boreholes, the inner surface of the first wall section is arranged at a first radial distance from the central longitudinal axis of the one of the at least two boreholes;
the second wall section has an inner surface defining a portion of the one of the at least two boreholes, the inner surface of the second wall section is arranged at a second radial distance from the central longitudinal axis of the one of the at least two boreholes;
the first and second radial distances are different.

13. The housing component according to claim 12 , wherein:
the first radial distance is shorter than the second radial distance.

14. The housing component according to claim 1 ,
wherein each of said interpenetrating bores have a central longitudinal axis;
wherein said first wall sections have a radially outer surface in contact with said continuously curved uninterrupted bore walls, said radially outer surface being arranged at a first radial distance from the respective central longitudinal axis,
wherein said second wall sections are arranged at a second radial distance from the respective central longitudinal axis, said first radial distance and said second radial distance being equal,
wherein said first wall sections have a radially inner surface being arranged at a third radial distance from the respective central longitudinal axis, said third radial distance being less than said first and said second radial distances.

15. A method for the production of a housing component, including the steps:
providing a base body, in which at least two bores interpenetrating each other are configured, wherein
the bores extend in a conveying direction through the base body, and
the bores are limited transversely to the conveying direction by an inner wall of the base body,

configuring at least one first wall section and at least one second wall section of the inner wall such that the at least one first wall section is harder than the at least one second wall section, and
configuring the inner wall in a profiled manner in a sectional view by applying at least one separate material layer onto continuously curved uninterrupted bore walls between opposing triangle regions of the inner wall of the at least two bores.

Assignees

• Coperion Gmbh

Inventors

• Polzer Karl-Conrad

Classifications

• B29C48/40

  using two or more parallel screws {or at least two parallel non-intermeshing screws}, e.g. twin screw extruders · CPC title

• B29C48/6803

  Materials, coating or lining therefor · CPC title

• B29C48/57

  provided with kneading disc-like elements, e.g. with oval-shaped elements · CPC title

• B29C48/68

  Barrels or cylinders · CPC title

• B29C48/685 Primary

  characterised by their inner surfaces, e.g. having grooves, projections or threads · CPC title