Method for producing injection molding element by additive manufacturing

Patent metadata

Field	Value
Publication number	US-10814394-B2
Application number	US-201615749477-A
Country	US
Kind code	B2
Filing date	Aug 4, 2016
Priority date	Aug 6, 2015
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A method for producing a three-dimensional object includes specifying reference-object information which describes data of a reference object, determining load information which describes at least one load value in a specific load situation inside the reference object described by the reference-object information, determining load regions having load values that deviate from a reference-load value inside the reference object described by the reference-object information, on the basis of the load information, determining object information which describes geometrically structural data of the object to be produced, on the basis of the load information and of the boundary condition information, and producing the three-dimensional object.

First claim

The invention claimed is:

1. A method for the manufacture of a tool element for an injection molding tool, the method comprising:
providing, to a control device, an item of reference object information describing geometrically structural data of a reference object with specified external dimensions;
providing, to the control device, at least one item of boundary condition information describing:
at least one geometrically structural boundary condition of the tool element; and
at least one closed external contour of the tool element; determining an item of load information describing at least one load value in a particular load situation within the reference object described by the reference object information; determining load regions with load values deviating from a reference load value within the reference object described by the reference object information using the load information;

determining an item of object information describing geometrically structural data of the tool element based on the load information and the boundary condition information; and
manufacturing, with the control device, the tool element based on the object information, wherein the tool element is at least in part additively constructed and comprises:
a main body portion comprising:
a first region having a solid form of a first density;
a second region with mechanical load values deviating from reference mechanical load values, the second region having a lightweight structure of a second density lower in comparison with the first density; and
an external form corresponding to the specified external dimensions and the at least one closed external contour of the reference object in at least the first and second regions; and

a projecting portion projecting from a face of the main body portion, the projecting portion having a tempering channel structure in a region with thermal load values deviating from reference thermal load values, wherein the tempering channel structure is configured for flowing of a tempering medium therethrough for tempering of the tool element.

2. The method of claim 1 , wherein the lightweight structure comprises at least one lightweight construction element and is additively constructed through successive, selective fusing in layers of the fusible construction material by an energy beam generated by a radiation generation device, wherein the at least one lightweight construction element comprises at least one of:
a recess;
a sandwich structure;
a region with a density lower in comparison with other regions of the tool element;
a region made of a fusible construction material having a lower density in comparison with another fusible construction material of the tool element; or
a region with thinner walls in comparison with other regions of the tool element.

3. The method of claim 1 , wherein the tempering channel structure is additively constructed through successive, selective fusing in layers of the fusible construction material by an energy beam generated by a radiation generation device.

4. The method of claim 1 , wherein the lightweight structure is formed in a geometrically structural design through an interior of the tool element.

5. The method of claim 1 , wherein the boundary condition information describes at least one non-changeable region of the tool element in view of geometrically structural data of the reference object described by the reference object information, and the tool element is manufactured with a region corresponding to the non-changeable region described by the boundary condition information.

6. The method of claim 1 , wherein the boundary condition information describes at least one of:
a solid external region of the tool element; or
a solid internal region of the tool element; wherein the tool element is manufactured with at least one object region corresponding to at least one region described by the boundary condition information.

7. The method of claim 1 , wherein the boundary condition information describes at least one connecting region for connecting the tool element to another object.

8. The method of claim 1 , wherein the tool element is a pusher element.

9. The method of claim 3 , wherein the projecting portion has an additively constructed reinforcing structure in a region corresponding to regions of the reference object deviating from mechanical reference load values.

10. The method of claim 1 , wherein the tool element is entirely additively constructed.

11. The method of claim 1 , wherein at least one object segment of the tool element is additively constructed on a base object body to form a hybrid object.

Assignees

• Cl Schutzrechtsverwaltungs Gmbh
• Concept Laser Gmbh

Inventors

• Herzog Frank

Classifications

• B29C64/153 Primary

  using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title

• B22F10/80

  Data acquisition or data processing · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B29C33/3842

  Manufacturing moulds, e.g. shaping the mould surface by machining · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title