Feeder Insert For A Vertically Split Casting Mold

Abstract

A feeder insert (10) for use in a vertically split casting mold that is used for the casting of metals includes a feeder body (11), which has an internal cavity (12) as feeder volume and which is composed of an exothermic and/or insulating material and which, in the base surface (17) thereof, which faces toward a pattern inserted into the casting mold during production of the casting mold, has a feeder opening (18) for connecting the cavity (12) to the mold cavity of the casting mold, wherein the feeder body (11) is oriented with its longitudinal axis (21), which runs through the feeder opening (18), at an angle with respect to the vertically oriented pattern and so as to be horizontal relative to the pattern, and the volume of the internal cavity (12) is of asymmetrical design with respect to an imaginary parting plane (25) running in or parallel to the longitudinal axis (21), characterized in that the feeder body (11) has an uneven mass distribution with respect to the parting plane (25), with a center of mass situated to one side of and spaced apart from the parting plane (25), and that region (28) of the internal cavity (12) of the feeder body (11) which is situated on that side of the parting plane (25) which is situated opposite the center of mass has a larger volume than that region (29) of the internal cavity (12) which is situated on that side of the parting plane (25) which faces toward the center of the mass.

Claims

1-7. (canceled)

8. A feeder insert (10) for use in a vertically split casting mold that is used for the casting of metals, comprising: a feeder body (11) having an internal cavity (12) as feeder volume, wherein said feeder body (11) is composed of an exothermic and/or insulating material, said feeder body (11) having a base surface (17). wherein said base surface (17) faces toward a vertically oriented pattern inserted into the casting mold during production of the casting mold, said base surface (17) having a feeder opening (18) for connecting the internal cavity (12) to a mold cavity of the casting mold, wherein the feeder body (11) has a longitudinal axis (21) running through the feeder opening (18) and is oriented with said longitudinal axis (21) at an angle with respect to the vertically oriented pattern and so as to be horizontal relative to the pattern, wherein the volume of the internal cavity (12) is of asymmetrical design with respect to an imaginary parting plane (25) running in or parallel to the longitudinal axis (21), wherein the feeder body (11) has an uneven mass distribution with respect to the parting plane (25), with a center of mass situated to one side of and spaced apart from the parting plane (25), and wherein a region (28) of the internal cavity (12) of the feeder body (11) that is situated on a side of the parting plane (25) which is situated opposite the center of mass has a larger volume than a further region (29) of the internal cavity (12) which is situated on a side of the parting plane (25) that faces toward the center of mass.

9. The feeder insert according to claim 8, wherein the uneven mass distribution is realized by formation of different wall thicknesses on the feeder body (11), whereby the region (27) of the wall area (13) disposed beneath the parting plane (25) with a horizontal orientation of the feeder body (11) relative to the vertically oriented pattern has a greater wall thickness than the region (26) of the wall area (13) of the feeder body (11) disposed above the parting plane (25).

10. The feeder insert according to claim 8, wherein the longitudinal axis (21) of the feeder opening (18) forms a central axis of the feeder body (11).

11. The feeder insert according to claim 8, wherein the longitudinal axis (21) of the feeder opening (18) is arranged eccentric to a central axis of the feeder body (11).

12. The feeder insert according to claim 8, wherein the feeder body (11) includes a cover region (14), wherein said cover region (14) is disposed opposite to the base surface (17) and includes an opening (22) that is aligned with the feeder opening (18) and disposed in the longitudinal axis (21) running through the feeder opening (18) for receiving a mold pin secured to the vertically oriented pattern inserted in the mold.

13. The feeder insert according to claim 8, wherein the feeder body (11) comprises two halves (11a, 11b) divided along a transverse axis (23) running at a right angle to the longitudinal axis (21) of the feeder opening (18), wherein said two halves (11a, 11b) are assembled to form the feeder body (11).

14. The feeder insert according to claim 8, further comprising a shaped part (30) having a through opening (31) that is aligned with the feeder opening (18) of the feeder body (11), wherein said shaped part (30) is fixed to the base surface (17) of the feeder body (11).

15. The feeder insert according to claim 14, wherein the shaped part (30) is made of metal.

Description

[0015] In the figures, exemplary embodiments of the present invention are shown, which are described below. In the drawings:

[0016] FIG. 1 shows a feeder insert in a position associated with a vertical mold form half in a lateral sectional view,

[0017] FIG. 2 shows the subject matter of FIG. 1 with a mold part forming its feeder foot.

[0018] The feeder insert 10 shown in FIG. 1 has a feeder body 11, which includes a wall area 13 surrounding an internal cavity 12 as a so-called feeder volume and a cover region 14. The feeder body has an outer surface 16 and an inner surface 15 of the wall area 13 surrounding the inner cavity 12 as well as a base surface 17, in which a feeder opening 18 is formed.

[0019] The feeder insert 10 shown in a horizontal arrangement should be associated with a vertical casting mold half 20, whereby the feeder insert can be mounted on a mold pin (not illustrated) formed on a pattern inserted in the casting mold. The mold pin engages through the feeder opening 18 into the base surface 17 and extends into the cover region 14 of the feeder insert 10, whereby in this cover region 14, an opening 22 for receiving the tip of the mold pin is formed. During casting, the tip of the mold pin could puncture the remaining cross section of the cover region in the opening 22. This, however, is also known from the state of the art.

[0020] It is clearly recognizable that the region 26 of the wall area 13 disposed above an imaginary parting plane 25, which coincides with the longitudinal axis 21 of the feeder opening 18, which in the embodiment shown in the drawing, forms simultaneously the longitudinal center axis of the feeder body 11 and extends into the plane of the drawing, has a clearly thin material thickness and therefore, markedly less mass than the region 27 of the wall area 13 disposed below the parting plane 25, so that the center of mass (which is not specifically defined in the drawing) of the entire wall area 13 of the feeder insert 10 lies, if necessary, below the parting plane 25. This has the result that the feeder insert 10 after mounting onto a mold pin, before compression of the mold material applied into the casting mold, necessarily rotates into such a position, in which the heavier region 27 of the wall area 13, based on the effects of gravity, is lying always below the parting plane 25 of the longitudinal axis of the mold pin.

[0021] At the same time, the internal cavity 12 of the feeder insert with reference to the longitudinal axis 21 is asymmetrically formed, whereby the region 28 of the internal cavity 12 positioned on the side of the parting plane 25 opposite to the center of mass has a greater volume that the region 29 of the hollow cavity positioned on the side of the parting plate 25 facing toward the center of mass. Since as described, the feeder insert 10 upon mounting onto a mold pin is oriented such that the heavier region 27 of the wall area 13 is positioned below the longitudinal axis of the mold pin, this necessarily results in the region 28 of the internal cavity 12 with the greater volume lying above the longitudinal axis 21 of the parting plane 25. Thus, it is ensured that based on additional and upwardly displaced volume of the internal cavity 12, compared to typical symmetrical feeder inserts, the volume of liquid metal to be received by the feeder inserts 10 can be increased to the point that the volume for one feed is dimensioned sufficiently without the feeder insert 10 running empty and its feeder opening 18 is kept clear.

[0022] From FIG. 1, it can further be seen that based on grounds of a more simple manufacturing, the feeder body 11 comprises two halves 11a, 11b separated along a transverse axis 23 running at a right angle to its longitudinal axis 21 and connected to form the feeder body 11, which can be manufactured as individual parts, respectively.

[0023] The embodiment shown in FIG. 2 differs from the previously described embodiment merely in that on the base surface 17 of the feeder insert 10, a preferably metallic shaped part 30 is arranged and is connected with the base surface 17, preferably by an adhesive, which has a hat-shaped or also cylindrical design and has a through-opening 31 aligned with the base opening 17 of the feeder insert 10. This type of design including such a shaped part 30, which also can be formed to be deformable, corresponds in this regard with the related state of the art. The features of the subject matter of this specification disclosed in the foregoing description, the patent claims, the abstract and the drawings can be important individually as well as in any combination with one another for realization of the present invention in its various embodiments.