CASTING DIE

Abstract

A casting die is formed from a mold half with a mold insert disposed at least partly in a relief of the mold half. The mold insert is mounted movably in the relief.

Claims

1. A casting die comprising a mold half with a mold insert disposed at least partly in a relief of the mold half, wherein the mold insert is mounted movably in the relief.

2. The casting die according to claim 1, wherein a gap is formed between a region of one side of the mold insert and a region of one side of the relief of the mold half.

3. The casting die according to claim 1, further comprising at least one retaining element that holds the mold insert in the relief of the mold half but which permits a movement of the mold insert within the relief of the mold half.

4. The casting die according to claim 3, wherein the retaining element is a clamping element.

5. The casting die according claim 3, wherein the retaining element is fastened to the mold half by at least one fastening element.

6. The casting die according to claim 5, wherein the mold half and the mold insert are respectively provided in two mutually adjoining side regions, with a clearance, a depth of which is smaller than a depth of the relief of the mold half.

7. The casting die according to claim 6, wherein the clearance in the side region of the mold half and the clearance in the adjoining side region of the mold insert form a common hollow, in which the at least one retaining element is disposed at least partially.

8. The casting die according to claim 7, wherein the common hollow extends over an entire length of the side region of the mold insert.

9. The casting die according to claim 7, wherein a gap is formed between a region of one side of the mold insert and a region of one side of the retaining element.

10. The casting die according to claim 2, wherein the gap is between 0.01 mm and 2 mm wide.

11. The casting die according to claim 2, wherein a sealing element is provided to seal the gap between the mold half and the mold insert and/or between the retaining element and the mold insert.

12. The casting die according to claim 11, wherein the retaining element is provided with a recess in which the sealing element is at least partially disposed.

13. The casting die according to claim 12, wherein the recess extends over an entire length of the retaining element.

14. The casting die according to claim 1, wherein the casting die comprises a centering device for centering the mold insert mounted movably in the relief of the mold half.

15. The casting die according to claim 14, wherein the centering device is disposed on the mold insert.

16. The casting die according to claim 14, wherein the centering device comprises an oblique plane.

17. The casting die according to claim 14, wherein the centering device has an at least largely round periphery.

18. The casting die according to claim 1, wherein the at least one relief of the mold half is provided with one or no lubricant.

19. The casting die according to claim 1, further comprising an additional mold insert disposed in the mold half, wherein a common hollow receiving a retaining element is formed between the mold inserts, by a clearance of the mold insert, a clearance of the mold half as well as a clearance of the additional mold insert.

20. The casting die according to claim 1, wherein the casting die is a pressure die-casting die.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Improvements and advantageous configurations of the invention can also be inferred from the following descriptions of exemplary embodiments, which are illustrated in the drawing. Features essential to the invention can also be inferred from the arrangement of individual components, reliefs, recesses, clearances and/or hollows relative to one another, wherein

[0068] FIG. 1 shows a schematic sectional drawing of a mold half of a casting die comprising one mold cavity,

[0069] FIG. 2 shows a schematic sectional drawing of an enlarged side region of a mold half of a casting die comprising one mold cavity,

[0070] FIG. 3 shows a schematic sectional drawing of two complementary mold halves of a casting die comprising one mold cavity,

[0071] FIG. 4 shows a perspective view of a mold half of a casting die comprising two mold cavities,

[0072] FIG. 5 shows a schematic sectional drawing of a mold half of a casting die comprising two mold cavities.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0073] FIG. 1 shows a schematic sectional drawing of a mold half 12 of a casting die 10 comprising one mold cavity 14. Within a relief 16 of the mold half 12, a mold insert 18 is movably disposed at least partially. To ensure that the mold insert 18 cannot he detached from the relief 16 of the mold half 12, the mold insert 18 is held movably in the relief 16 by means of retaining elements 20. The retaining elements 20 are reversibly joined to the mold half 12 by means of fastening elements 22, especially screws. These fastening elements 22 are disposed only in the region of the clearance 30 of the mold half 12.

[0074] The mold insert 18 has a smaller dimensioning than the relief 16 of the mold half 12. Because of the smaller dimensioning of the mold insert 18, a gap 24 or 2 6 respectively is formed between a region of one side of the mold insert 18 and a region of one side of the relief 16 or respectively a region of one side of the retaining element 20. In the region of the floor of the clearance 32 of the mold insert 18, the retaining element 20 rests on the mold insert 18. The clamped connection between retaining element 20 and mold insert 18 is formed in this region.

[0075] In order not to influence the bringing together of the mold halves 12, the retaining elements 20 are disposed in common hollows 28. For this purpose, the common hollow 28 is formed by means of a first clearance 30 in the side region of the mold half 12 and a second clearance 32 in the adjoining side region of the mold insert 18.

[0076] To ensure that no dirt or another extraneous substance can penetrate into the gap 24 or 26, a sealing element 34 is disposed between retaining element 20 and mold insert 18. To ensure also that the sealing element 34 is largely flush with the top side of the retaining element 20 and of the mold insert 18, the sealing element 34 is disposed in a recess 36, which is located in the retaining element 20 but may also be located in the mold insert 18. In order to prevent detachment of the sealing element 34 from the recess 36 and consequently from the mold half 12, the recess 36 is made in the form of an undercut.

[0077] At the top side of the mold insert 18, a first part of a centering device 38 is disposed. In the present embodiment, the centering device 38 is a circular, circumferential oblique plane.

[0078] FIG. 2 shows an enlarged diagram of the left side region of the sectional drawing illustrated in FIG. 1.

[0079] The arrangement of the sealing element 34 in the recess 36 and the configuration of the recess 36 as an undercut 40 can be seen in this enlarged diagram.

[0080] FIG. 3 shows a schematic sectional drawing of a casting die 10, wherein both mold halves 12, 42 are illustrated.

[0081] Within a relief 16 of a first mold half 12, a mold insert 18 is movably disposed at least partly. In contrast, in the shown embodiment, a mold insert 46 is disposed immovably within the relief 44 of a second mold half 42. This mold insert 46 is disposed in perfectly fitting relationship in the relief 44 and therefore cannot execute any lateral movement.

[0082] Furthermore, the mold insert 46 is reversibly joined to the mold half 42 by means of a fastening element 48, especially a screw.

[0083] To ensure that the mold insert 18 cannot be detached from the relief 16 of the mold half 12, the mold insert 18 is held movably by means of retaining elements 20 in the relief 16. The retaining elements 20 are reversibly joined to the mold half 12 by means of fastening elements 22, especially screws. These fastening elements 22 are disposed only in the region of the clearance 30 of the mold half 12.

[0084] In the shown embodiment, the top edges of the fastening element 22 are not flush with the top edge of the retaining element 20. To permit a tight fitting of the mold halves 12, 42, the mold hall 42 is provided with holes 50, into which the heads of the fastening elements 22 can penetrate.

[0085] The mold insert 18 has a smaller dimensioning than the relief 16 of the mold half 12. Because of the smaller dimensioning of the mold insert 18, a gap 24 or 26 respectively is formed between a region of one side of the mold insert 18 and a region of one side of the relief 16 or respectively a region of one side of the retaining element 20. In the region of the floor of the clearance 32 of the mold insert 18, the retaining element 20 rests on the mold insert 18. The clamped connection between retaining element 20 and mold insert 18 is formed in this region.

[0086] In order not to influence the bringing together of the mold halves 12, the retaining elements 2 0 are disposed in common hollows 28. For this purpose, the common hollow 28 is formed by means of a first clearance 30 in the side region of the mold half 12 and a second clearance 32 in the adjoining side region of the mold insert 18.

[0087] To ensure that no dirt or another extraneous substance can penetrate into the gap 24 or 26, a sealing element 34 is disposed between retaining element 20 and mold insert 18. To ensure also that the sealing element 34 is largely flush with the top side of the retaining element 20 and of the mold insert 18, the sealing element 34 is disposed in a recess 36, which is located in the retaining element 20 but may also be located in the mold insert 18. In order to prevent detachment of the sealing element 34 from the recess 36 and consequently from the mold half 12, the recess 36 is made in the form of an undercut.

[0088] At the top side of the mold insert 18, a first part of a centering device 38 is disposed. This consists of an oblique plane, which runs circularly around the mold insert 18. This oblique plane is oriented in such a way that the oblique plane tapers conic-ally starting from the top side of the mold insert 18.

[0089] At the top side of the mold insert 46, a part of the centering device 38 complementary to the first part is disposed. This also consists of an oblique plane, which runs circularly around the mold insert 46. This oblique plane is oriented in such a way that the oblique plan flares conically starting from the top side of the mold insert 46.

[0090] Should the mold inserts 18 and 46 have an off-centering or an offset relative to one another during the bringing together of the mold halves 12 and 42, the oblique planes of the mold inserts 18 and 46 would slide over one another. By virtue of this coupling, a force larger than the clamping force or frictional force between the retaining element 20 and the mold insert 18 is developed. Consequently, the mold insert 18 is moved in the relief 16 and executes a compensating movement, with the result that the off-centering of the two mold inserts 18 and 46 relative to one another is compensated and the mold halves 18 and 46 bear ideally on one another.

[0091] FIG. 4 shows a perspective top view of a mold half 12 of a casting die 10 comprising two mold cavities 14. Within mold halves 12, two mold inserts 18 are movably disposed at least partly. Both of these mold inserts 18 are mounted to be movable independently of one another in such a way that they are able to execute lateral compensating movements in two spatial directions independently of one another.

[0092] To ensure that the mold inserts 18 cannot be detached from the reliefs of the mold halves 12, the mold inserts 18 are held movably in the relief with retaining elements 20. In the embodiment of FIG. 4, the retaining elements 20 are configured in such a way that the retaining elements 20 extend over the entire length of the side region of the mold inserts. The retaining elements 20 are joined reversibly to the mold halves 12 by means of fastening elements 22, especially screws.

[0093] The mold inserts 18 have a smaller dimensioning than the reliefs of the mold halves 12. Because of the smaller dimensioning of the mold inserts 18, a gap is formed between a region of one side of the mold insert 18 and a region of one side of the relief or respectively a region of one side of the retaining element 20.

[0094] To ensure that no dirt or another extraneous substance can penetrate into one of the gaps, a sealing element 34 is disposed between the retaining elements 20 and the mold inserts 18. To ensure also that the sealing element 34 is largely flush with the top side of the retaining element 20 and of the mold insert 18, the sealing element 34 is disposed in a recess.

[0095] At the top side of the mold inserts 18, two first parts of two independent centering devices 38 are disposed. These first parts consist of an oblique plane, which runs circularly around the mold inserts 18. These oblique planes are oriented in such a way that the oblique planes taper conically starting from the top side of the mold inserts 18.

[0096] FIG. 5 shows a schematic sectional drawing of a mold half 12 of a casting die 10 comprising two mold cavities 14. Within two reliefs 16 in one mold half 12, two mold inserts 18 are movably disposed at least partly. Both of these mold inserts 18 are mounted to be movable independently of one another in such a way that they are able to execute lateral compensating movements independently of one another.

[0097] To ensure that the mold inserts 18 cannot be detached from the reliefs 16 of the mold halves 12, the mold inserts 18 are held movably in the reliefs 16 by means of retaining elements 20. The retaining elements 20 are joined reversibly to the mold halves 12 by means of fastening elements 22, especially screws. These fastening elements 22 are disposed only in the region of the clearances 30 and of the clearance 52 of the mold half 12.

[0098] The mold inserts 18 have a smaller dimensioning than the reliefs 16 of the mold halves 12. Because of the smaller dimensioning of the mold inserts 18, a gap 24 or 26 respectively is formed between a region of one side of the mold insert 18 and a region of one side of the reliefs 16 or respectively a region of one side of the retaining element 20. In the region of the floor of the clearance 32 of the mold inserts 18, the retaining elements 20 rest on the mold insert 18. The clamped connection between retaining element 20 and mold insert 18 is formed in this region.

[0099] In order not to influence the bringing together of the mold halves 12, the retaining elements 20 are disposed in common hollows 28, 54. For this purpose, the common hollow 28 is formed by a first clearance 30 in the side region of the mold half 12 and a second clearance 32 in the adjoining side region of the mold insert 18. The hollow 54 between the two mold inserts 18 is formed by a clearance 32 of the first mold insert 18, a clearance 32 of the second mold insert 18 and a clearance 52 of the mold half 12.

[0100] To ensure that no dirt or another extraneous substance can penetrate into the gaps 24 or 26, sealing elements 34 are disposed between the retaining elements 20 and the mold inserts 18. To ensure also that the sealing elements 34 are largely flush with the top sides of the retaining elements 20 and of the mold inserts 18, the sealing elements 34 are disposed in recesses 36, which are located in the retaining elements 20 but may also be located in the mold inserts 18. In order to prevent detachment of the sealing elements 34 from the recesses 3 6 and consequently from the mold halves 12, the recesses 36 are made in the form of an undercut.

[0101] At the top side of the mold inserts 18, two first parts of two independent centering devices 38 are disposed. These first parts consist of an oblique plane, which runs circularly around the mold inserts 18. These oblique planes are configured in such a way that the oblique planes taper conically starting from the top side of the mold inserts 18.

LIST OF REFERENCE NUMERALS

[0102] (is part of the description) [0103] 10 Casting die [0104] 12 Mold half [0105] 14 Mold cavity [0106] 16 Relief [0107] 18 Mold insert [0108] 20 Retaining element [0109] 22 Fastening element [0110] 24 Gap [0111] 26 Gap [0112] 28 Hollow [0113] 30 Clearance [0114] 32 Clearance [0115] 34 Sealing element [0116] 36 Recess [0117] 38 Centering device [0118] 40 Undercut [0119] 42 Mold half [0120] 44 Relief [0121] 46 Mold insert [0122] 48 Fastening element [0123] 50 Hole [0124] 52 Clearance [0125] 54 Hollow