Core pack

Patent metadata

Field	Value
Publication number	US-11077489-B2
Application number	US-201916536393-A
Country	US
Kind code	B2
Filing date	Aug 9, 2019
Priority date	Apr 6, 2017
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

A core pack has at least two cores. The cores have chaplet sections that are oriented relative to one another and form a print. A chaplet is or can be placed on and/or against the print, thus allowing the cores to be secured relative to one another.

First claim

What is claimed is:

1. A mold having a core pack, comprising:
an outer mold configured to receive a casting metal;
at least two cores configured to be arranged in the outer mold after the outer mold is formed and to form at least one fluid channel within a casting,
wherein
the at least two cores have mutually oriented chaplet portions which form an appendage in the form of a print when outermost ones of the chaplet portions are in mutual contact in a region containing the chaplet portions, the chaplet portions being configured to not extend to an outer surface of a cast component after being cast within the mold, and
a chaplet element is disposed on top of and/or on the print, on account of which the two cores are mutually fixable.

2. The mold having a core pack according to claim 1 , wherein
the chaplet element is configured for a form-fitting and/or force-fitting disposal.

3. The mold having a core pack according to claim 1 , wherein
the chaplet element is elastic.

4. The mold having a core pack according to claim 3 , wherein
the chaplet element is ring-shaped.

5. The mold having a core pack according to claim 4 , wherein the chaplet element is a spring ring.

6. The mold having a core pack according to claim 3 , wherein
the chaplet element is ring-shaped.

7. The mold having a core pack according to claim 1 , wherein the chaplet element is a spring ring.

8. The mold having a core pack according to claim 1 , wherein
a raw material of the chaplet element corresponds to a casting raw material.

9. The mold having a core pack according to claim 1 , wherein
a melting temperature and/or evaporating temperature of a raw material of the chaplet element is below a melting temperature of a casting raw material.

10. The mold having a core pack according to claim 1 , wherein the chaplet portions in cross section are circle-segment-shaped.

11. The mold having a core pack according to claim 1 , wherein a length-to-diameter ratio of the appendage is less than 0.6.

12. The mold having a core pack according to claim 1 , wherein the core pack is a core pack of a cylinder head.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Huber Manfred
• Summer Thomas

Classifications

• B22C9/24

  for hollow articles · CPC title

• B22C9/103 Primary

  Multipart cores · CPC title

• B22C9/108

  Installation of cores · CPC title