Core Pack

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.

Claims

1. A core pack, comprising: at least two cores, wherein the two cores have mutually oriented chaplet portions which form a print, and a chaplet element is disposed or capable of being disposed on top of and/or on the print, on account of which the two cores are mutually fixable.

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

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

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

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

6. The core pack according to claim 1, wherein the chaplet element is ring-shaped.

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

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

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

11. The core pack according to claim 1, wherein the print is an appendage.

12. The core pack according to claim 12, wherein a length-to-diameter ratio of the appendage is less than 0.6.

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

14. A casting mold comprising at least one core pack according to claim 1.

15. The casting mold according to claim 14, wherein one of the two cores in terms of a direction of gravity is a lower core, and wherein one of the two cores in terms of the direction of gravity is an upper core, and wherein a down-holding member is provided/disposed only on the lower core.

16. A method for producing a casting, comprising the steps of: providing at least two cores which are configured for shaping cavities in a later casting; mutually fixing the at least two cores by way of at least one chaplet element; and disposing the core pack in a casting mold and fixing a core relative to the casting mold.

17. The method according to claim 16, further comprising the step of: fixing a lower core relative to the casting mold.

18. The method according to claim 16, wherein the method produces a casting of a cylinder of a cylinder head of an internal combustion engine.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG. 1 shows a schematic view of a core pack.

[0034] FIG. 2 shows two detailed views of prints.

[0035] FIG. 3 shows two embodiments of chaplet elements.

DETAILED DESCRIPTION OF THE DRAWINGS

[0036] FIG. 1 in a perspective illustration shows a schematic view of a core pack comprising a core 1 and a core 2, wherein both cores 1 and 2 are configured in each case with two chaplet portions 11 and 12, respectively. The chaplet portions 11 and 12, respectively, are mutually oriented and positioned in such a manner that prints 20 are formed. The prints 20 serve for disposing a chaplet element (not shown in FIG. 1).

[0037] FIG. 2 in the left half image shows a frontal view of a print 20 which is formed from two chaplet portions 11, 12. A ring-shaped, in particular annular, chaplet element 40 is disposed about the print 20. A lateral view is shown in the right half image, wherein it can be seen how the chaplet element 40 encloses the print 20 and thus mutually fixes or compresses, respectively, the two cores 1 and 2. Depending on the design embodiment of the chaplet element 40, pretensioning can already be applied to the two chaplet portions 11 and 12, or the adjoining cores 1 and 2, respectively, in this state. Alternatively, the chaplet element 40 can also be configured in such a manner that said chaplet element 40 is only push-fitted onto the print 40 so as to be flush with the latter, wherein there is not yet any force acting on the two chaplet portions 11 and 12 herein.

[0038] FIG. 3 shows two potential design embodiments of chaplet elements 40 which are in particular configured as spring elements, or as spring rings, respectively. The chaplet elements 40 are made from metal, for example, and depending on the specific application, in terms of the raw material are adapted to the melt of the casting material of the later component, for example. The casting material is, for example, an aluminum raw material, in particular, an aluminum alloy. The material of the chaplet element 40 can be a raw material that is dissimilar to said casting material, or else can be the same raw material as that of the casting per se. Both chaplet elements 40 by way of the shape and geometry thereof enable an in particular radial elasticity or deformation capability, respectively, which enables the disposal on disposal regions that are dimensioned so as to be of dissimilar sizes as well as the application of a pretensioning force suitable for fixing/holding the cores.

LIST OF REFERENCE SIGNS

[0039] 1, 2 Cores [0040] 11, 12 Chaplet portions [0041] 20 Print [0042] 40 Chaplet element

[0043] The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.