Holding Device for Holding a Casting Core in a Casting Mold

Abstract

A holding device for holding a casting core in a casting mold, especially in a die-casting mold, includes a plurality of clamping sections which are positioned in relation to each other in such a way that a clamping region for a casting core is formed.

Claims

1. A holding device for holding a casting core in a casting mold, comprising: a plurality of clamping portions that are positioned with respect to one another such that a clamping region is formed for the casting core.

2. The holding device according to claim 1, wherein the clamping region is configured for a force-fitting arrangement of the casting core.

3. The holding device according to claim 1, wherein the plurality of clamping portions form a lattice structure or web structure.

4. The holding device according to claim 1, wherein a material of the holding device is identical or similar to a casting material that is used for producing cast parts.

5. The holding device according to claim 1, wherein the plurality of clamping portions have inner contact faces and outer contact faces, the inner contact faces are configured to bear against the casting core, and the outer contact faces are configured to bear against the casting mold.

6. The holding device according to claim 5, wherein at least one inner contact face is configured to bear against the casting core fully and in a form-fitting manner.

7. The holding device according to claim 6, wherein at least one clearance or at least one recess is formed in at least one outer contact face.

8. The holding device according to claim 5, wherein at least one clearance or at least one recess is formed in at least one outer contact face.

9. A casting mold, comprising: at least one casting core; and at least one holding device according to claim 1, wherein the at least one holding device is arranged between the at least one casting core and the casting mold.

10. The casting mold according to claim 9, wherein the mold is a die casting mold.

11. The casting mold according to claim 9, wherein the at least one holding device is arranged between the at least one casting core and the casting mold in a force-fitting manner.

12. The casting mold according to claim 9, wherein an interference fit is provided between the at least one holding device and the casting core.

13. The casting mold according to claim 9, wherein the plurality of clamping portions are arranged in a distributed manner separated from one another.

14. The casting mold according to claim 9, wherein an interference fit is provided between the holding device and the casting mold.

15. The casting mold according to claim 12, wherein an interference fit is provided between the holding device and the casting mold.

16. A method for fixing/holding a casting core, comprising the steps of: providing a casting mold and a casting core; providing a holding device comprising a plurality of clamping portions; arranging the holding device and/or the plurality of clamping portions between the casting mold and the casting core in order to fix the casting core.

17. The method according to claim 16, wherein the casting mold is a die casting mold.

18. The method according to claim 16, further comprising the steps of: arranging the holding device on the casting core; inserting the casting core into the casting mold.

19. The method according to claim 18, further comprising the step of: closing the casting mold in order to fix the casting core and the holding device.

20. The use of a holding device according to claim 1 in a die casting mold for core fixing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG. 1 is a perspective view of a casting core, held by two holding devices.

[0036] FIG. 2 is a schematic sectional view of a casting mold together with a casting core, fixed via a holding device.

DETAILED DESCRIPTION OF THE DRAWINGS

[0037] FIG. 1 shows a casting core 1, which has a substantially square cross section. At each of the ends of the casting core 1, a holding device 10 is arranged that has clamping portions 14. The clamping portions 14 are formed in a cohesive manner, wherein it should be noted that the casting core 1 partially covers some clamping portions. However, it is apparent that the clamping portions 14 are arranged preferably in pairs and opposite one another such that clamping or fixing of the casting core 1 can be realized, but, at the same time, also holding and fixing of the holding device 10 by a casting mold that is not shown here. The clamping portions 14 each form a clamping region 12, in which the casting core 1 or the end regions thereof are arranged. Facing the casting core 1, the clamping portions 14 comprise inner contact faces 16 and, on the opposite side, facing the casting mold that is not shown here, the clamping portions 14 comprise outer contact faces 18. It is apparent that in the contact faces 18 or, in the region of the contact faces 18, clearances or recesses 20 are formed such that it is possible for the melt to fill the frame of the casting mold as completely as possible. In this way, the holding devices 10 expediently remain in the subsequent cast part.

[0038] FIG. 2 shows a schematic sectional illustration of a casting core 1, arranged in a casting mold 2, which has an upper mold half and a lower mold half in the outline view shown here. A holding device is outlined, comprising a plurality of clamping portions 14, which, unlike in FIG. 1, are not formed in a cohesive manner. The clamping portions 14 are for example individual pins which fit between the casting core 1 and the casting mold 2.

[0039] It is apparent both from FIG. 1 and from FIG. 2 that the casting core 1 and the casting mold 2 do not have, or do not have to have, any modifications or positioning aids. Advantageously, the holding device(s) can be arranged between the casting core 1 and the casting mold 2 without geometric modifications to the casting core 1 or the casting mold 2 being necessary for this purpose. This is realized in particular by the clamping action between the inner contact faces 16 and the casting core 1 and the outer contact faces 18 and the casting mold 2, respectively.

LIST OF REFERENCE SIGNS

[0040] 1 Casting core [0041] 2 Casting mold [0042] 10 Holding device [0043] 12 Clamping region [0044] 14 Clamping portion [0045] 16 Inner contact face [0046] 18 Outer contact face [0047] 20 Clearance

[0048] 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.