MOLD TOP INSULATING ASSEMBLY AND METHOD OF USE
An ingot mold top comprising a base having a pair of side walls, each side wall having a first end and a second end, each of the first ends terminating in an angled portion and the second ends connected by a first end wall, a wedge having an end wall and a pair of side walls, the pair of side walls extending generally perpendicularly away from the end wall, and wherein the wedge pair of side walls each terminate in an angled portion and the base and wedge completely encompass an interior periphery of a mold.
1. Technical Field
The invention relates generally to mold top insulating assemblies and exothermic assemblies. More particularly, the invention relates to a safer and easily installed mold top. Specifically, the invention relates to a multiple piece mold top assembly which can be safely installed with an alignment device and provide an increased usable ingot yield.
2. Background Information
The use of a mold top in casting metal has been common place for numerous years. Traditionally, a mold top is used to insulate the molten metal and maintain a more constant temperature during the solidification process. The constant temperature provides a more consistent material with fewer contaminants.
Mold tops, or “hot tops”, have varying heights and dimensions. Initially, the mold top is sized and shaped to fit the mold and extends from the top of the mold only the distance necessary to provide consistent cooling for the molten metal. Originally, mold tops were a two-piece assembly with the base installed first and the top located on the base after the molten was poured.
The mold top of
Thus there is a long-felt need in the art for a mold top which can easily and safely be installed in a mold by a single installer and provides a higher usable yield of material.
SUMMARY OF THE INVENTIONThe present invention broadly comprises an ingot mold top comprising a base having a pair of side walls, each side wall having a first end and a second end, each of the first ends terminating in an angled portion and the second ends connected by a first end wall, a wedge having an end wall and a pair of side walls, the pair of side walls extending generally perpendicularly away from the end wall, and wherein the wedge pair of side walls each terminate in an angled portion and the base and wedge completely encompass an interior periphery of a mold.
The present invention further broadly comprises a method of installing an ingot mold top comprising the steps of inserting a mold top base having a pair of side walls with angled terminating portions within a mold, locating a mold top wedge at least partially between the base and the mold, and forcing the wedge downwards to provide axial movement in a direction along the angled terminating portions.
The preferred embodiment of the invention, illustrative of the best modes in which Applicant has contemplated applying the principles of the invention, are set forth in the following description and are shown in the drawings.
At the outset, it should be appreciated that like drawing numbers on different drawing views identify identical, or functionally similar, structural elements of the invention. While the present invention is described with respect to what is presently considered to be the preferred embodiment, it is to be understood that the invention as claimed is not limited to the disclosed aspects.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this invention belongs. Although any methods, devices or materials similar or equivalent to those described herein can be used in the practice or testing of the invention, the preferred methods, devices, and materials are now described.
The mold top assembly of the present invention is indicated generally at 30, as is particularly shown in
As seen in
Base 34 also includes a shoulder 56 attached to the exterior periphery, which may be formed integral to the base in a preferred embodiment. Shoulder 56 forms the top surface of the base, as well as extends outward of the first side wall, the second side wall, and the first end wall. Since the shoulder extends outwards of the remainder of the base, the bottom side of shoulder 56 rests on the top of mold sidewall 42.
Further, base 34 includes a ledge 58 attached to the interior periphery, which may be formed integral to the base in a preferred embodiment. Ledge 58 extends outward from the upper portion of the first side wall, the second side wall, and the first end wall. Ledge 58 may be formed by locating shoulder 56 partially outward of the side walls and end wall of base 34. Advantageously, ledge 58 provides a locating and holding area for lid 38, as will be described in greater detail below.
As seen in
In accordance with one of the main features of the present invention, first side wall 62 and second side wall 64 extend away from end wall 60 a sufficient distance to allow an angled portion that is complimentary to ends 52 and 54 respectively. In particular, the angled portions of first side wall 62 and second side wall 64 are preferably in the same range as ends 52 and 54, namely 5 to 45 degrees. However, it should be immediately apparent to one of ordinary skill in that art that almost any angle would be sufficient.
Base 34, wedge 36, and lid 38 are all preferably composed of a heat resilient material such as a ceramic composite or ceramic fiber, however any suitable material which can reduce impurities in the ingot head and still be located within the mold opening as detailed below may be used and is within the spirit and scope of the invention as claimed.
Having described the structure of a preferred embodiment of the mold top assembly, a preferred mold top installation device 72 will now be described in detail and should be viewed in light of
Installation device 72 includes tube 74 with an inner rod 76 movable axially within tube 74. Tube 74 terminates in first end 78 and inner rod 76 terminates in second end 80. A guide 82 is attached at each end (78 and 80), each guide includes a central member 84 arranged generally perpendicular to tube 74 and generally parallel to side walls 46 and 48 of base 34 during operation. Further, an angled member 86 extends from both the top and bottom of central member 84. Each angled member is preferably directed back towards tube 74. Advantageously, the angled members help to locate and center the installation device, as well as spread base 34 apart in order to facilitate installation of wedge 36. In particular, the gradual increase in distance between the angled members allows the installation device to more easily slide between side walls 46 and 48 of base 34 since there is less contact at the guides.
The installation device also includes an arm 88 and a driving bar 90. The driving bar is spaced apart from tube 74 by the generally L-shaped arm 88 in a preferred embodiment. In particular, the driving bar remains parallel to tube 74, but the driving bar is offset from tube 74 both vertically and horizontally. Driving bar 90 is preferably rectangular in shape, with the widest end directed upwards so that the installer can strike the face to urge the installation device and wedge 36 downwards.
Having described the structure of the a preferred embodiment of the mold top assembly and installation device, a preferred method of installing a mold top assembly will now be described in detail and should be viewed in light of
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Accordingly, the mold top assembly is an effective, safe, inexpensive, and efficient device that achieves all the enumerated objectives of the invention, provides for eliminating difficulties encountered with prior art devices, systems, and methods, and solves problems and obtains new results in the art.
In the foregoing description, certain terms have been used for brevity, clearness, and understanding; but no unnecessary limitations are to be implied therefrom beyond the requirement of the prior art, because such terms are used for descriptive purposes and are intended to be broadly construed.
Moreover, the description and illustration of the invention is by way of example, and the scope of the invention is not limited to the exact details shown or described.
Having now described the features, discoveries, and principles of the invention, the manner in which the mold top assembly is constructed and used, the characteristics of the construction, and the advantageous new and useful results obtained; the new and useful structures, devices, elements, arrangement, parts, combinations, and methods are set forth in the appended claims.
Claims
1. An ingot mold top comprising:
- a base having a pair of side walls, each side wall having a first end and a second end, each of the first ends terminating in an angled portion and the second ends connected by a first end wall;
- a wedge having an end wall and a pair of side walls, the pair of side walls extending generally perpendicularly away from the end wall; and,
- wherein the wedge pair of side walls each terminate in an angled portion and the base and wedge completely encompass an interior periphery of a mold.
2. The ingot mold top of claim 1 wherein the base side walls and first end wall are a single component and the wedge pair of side walls and end wall are a single component.
3. The ingot mold top of claim 1 wherein the base angled portions are complimentary shaped to the wedge side walls angled portions.
4. The ingot mold top of claim 1 wherein the base angled portions and the wedge angled portions each have an angle in a range between 5 degrees and 45 degrees.
5. The ingot mold top of claim 1 wherein the wedge end wall locates the base within the mold.
6. The ingot mold top of claim 1 wherein the base side walls and first end wall define a ledge integral to the interior periphery.
7. The ingot mold top of claim 1 wherein the base side walls and first end wall define a shoulder integral to the exterior periphery.
8. The ingot mold top of claim 1 wherein the base is taller than the wedge.
9. The ingot mold top of claim 1 further comprising a lid complimentary shaped with the base.
10. The ingot mold top of claim 6 wherein a lid slides along the ledge during installation.
11. The ingot mold top of claim 1 wherein the first end wall opposes the wedge end wall.
12. A method of installing an ingot mold top comprising the steps of:
- inserting a mold top base having a pair of side walls with angled terminating portions within a mold;
- locating a mold top wedge at least partially between the base and the mold; and,
- forcing the wedge downwards to provide axial movement in a direction along the angled terminating portions.
13. The method of claim 12 further comprising the step of aligning the base angled terminating portions with the wedge.
14. The method of claim 12 further comprising the step of locating an installation device proximate the wedge before the step of forcing the wedge downwards to provide axial movement in a direction along the angled termination portions.
15. The method of claim 12 further comprising the step of forcing the base axially in a direction opposite the wedge by providing the downward force on the wedge.
16. The method of claim 12 further comprising the step of positioning a lid at least partially on a shoulder of the mold top base.
17. The method of claim 16 further comprising the step of sliding the lid along the shoulder to completely cover the molten material.
18. The method of claim 12 further comprising the step of positioning the base along substantially three walls of an interior periphery of the mold before the step of locating a mold top end wall at least partially between the base and the mold.
19. The method of claim 12 further comprising the step of locating the mold top wedge without standing over the mold.
20. The method of claim 12 further comprising the step of forcing the mold top wedge downwards to provide axial movement in a direction along the angled terminating portions without standing over the mold.
Type: Application
Filed: Feb 5, 2009
Publication Date: Aug 5, 2010
Inventor: Michael E. Hubbs (Berlin Center, OH)
Application Number: 12/366,227
International Classification: B22D 7/06 (20060101);