CN216656263U - Casting sand box structure based on can breathe freely fossil fragments - Google Patents
Casting sand box structure based on can breathe freely fossil fragments Download PDFInfo
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- CN216656263U CN216656263U CN202122524649.1U CN202122524649U CN216656263U CN 216656263 U CN216656263 U CN 216656263U CN 202122524649 U CN202122524649 U CN 202122524649U CN 216656263 U CN216656263 U CN 216656263U
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- keel
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Abstract
The utility model relates to a casting sand box structure based on a breathable keel, which is characterized in that: comprises an outer shell, a sand core and a keel; by adopting the tubular keel, holes are drilled in the circumferential direction of the extension direction of the keel, so that the keel can play a role in facilitating drawing and hoisting, and meanwhile, the smoke generated in the casting process can be helped to be discharged from two ends of the keel; the top of the original single casting box for casting the casting box is exhausted, and the mode of combining the top exhaust of the casting box and the keel exhaust is changed to exhaust smoke; the detention time of the oil fume in the cavity is greatly shortened, the quality of the casting is greatly improved, and the defects of shrinkage cavities and bubbles are overcome.
Description
Technical Field
The utility model relates to the technical field of casting sand boxes, in particular to a casting sand box structure based on a breathable keel.
Background
The keel structure arranged in a common casting sand box is manufactured according to the shape, the length or the diameter of the sand box, and the common keel mainly plays a role in facilitating lifting, brushing and box matching;
resin sand is generally used as a molding material to react with metal at high temperature, a large amount of oil fume gas is generated in a cavity, part of the oil fume gas is discharged from air holes of a casting box, and the part which is not discharged is immersed in molten metal, so that the casting blank generates shrinkage cavity and pinhole defects, and the quality and the cost of the product are seriously influenced;
therefore, in order to discharge the gas generated in the mold core in time, drilling holes on the keel for ventilation can be considered, and the discharge of the gas is accelerated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a casting sand box structure based on an air-permeable keel, which can solve the problems of poor air exhaust effect, casting shrinkage cavity and more pinhole defects of a common casting sand box adopting the keel.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a casting sand box structure based on ventilative fossil fragments, its innovation point lies in: comprises an outer shell, a sand core and a keel;
the outer shell comprises a first parting box body and a second parting box body; the first parting box body and the second parting box body are parted in the horizontal direction, and a parting surface is formed at the parting position; arc-shaped grooves for clamping keels are formed in the joint surface of the first parting box body and the joint surface of the second parting box body; the inner wall of the outer shell is provided with outer molding sand; the outer shell is provided with a casting hole and a plurality of air holes;
the sand core is arranged on the keel and is arranged in the outer shell; a casting cavity is formed between the sand core and the shape sand on the inner wall of the outer shell;
the keel is of a cylindrical tubular structure and is horizontally arranged, and two ends of the keel are opened; two ends of the keel penetrate through the sand core and the outer shell and extend out of the outer side of the outer shell; the keel is circumferentially provided with a plurality of exhaust holes along the extending direction, and the exhaust holes are communicated with the inner cavity of the cylindrical tubular keel.
Furthermore, the exhaust holes are provided with a plurality of rows in the circumferential direction of the keel, and the exhaust holes in each row are arranged on the keel at equal intervals; the exhaust holes of two adjacent columns are arranged in a staggered manner; the diameter of the vent hole is 20 mm.
Furthermore, the sand core and the contour sand on the inner wall of the outer shell are both resin sand.
Furthermore, the outer side portion that is located the shell body on fossil fragments is provided with the lug.
The utility model has the advantages that:
1) according to the utility model, the tubular keel is adopted, and holes are drilled in the circumferential direction of the extension direction of the keel, so that the keel can play a role in facilitating drawing and hoisting, and can help smoke generated in the casting process to be discharged from two ends of the keel; the top of the original single casting box for casting the casting box is exhausted, and the mode of combining the top exhaust of the casting box and the keel exhaust is changed to exhaust smoke; the detention time of the oil fume in the cavity is greatly shortened, the quality of the casting is greatly improved, and the defects of shrinkage cavities and bubbles are overcome.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a block diagram of a casting flask based on air permeable keels of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A structure of a casting flask based on air-permeable keels as shown in fig. 1 comprises an outer shell 1, a sand core 2 and keels 3.
The outer casing 1 comprises a first parting box body 11 and a second parting box body 12; the first parting box body 11 and the second parting box body 12 are parted in the horizontal direction, and parting surfaces are formed at parting positions; arc-shaped grooves for clamping the keels 3 are formed in the parting surface of the first parting box body 11 and the parting surface of the second parting box body 12; the inner wall of the outer shell 1 is provided with external molding sand 13; the outer shell 1 is provided with a casting hole and a plurality of air holes.
The sand core 2 is arranged on the keel 3 and is arranged in the outer shell 1; a casting cavity is formed between the sand core 2 and the shape sand 13 on the inner wall of the outer shell 1.
The keel 3 is in a cylindrical tubular structure and is horizontally arranged, and two ends of the keel 3 are opened; two ends of the keel 3 penetrate through the sand core 2 and the outer shell 1 and extend out of the outer side of the outer shell 1; the keel 3 is circumferentially provided with a plurality of exhaust holes 31 along the extending direction, and the exhaust holes 31 are communicated with the inner cavity of the cylindrical tubular keel 3.
The exhaust holes 31 are arranged in a plurality of rows in the circumferential direction of the keel 3, and the exhaust holes 31 in each row are arranged on the keel 3 at equal intervals; the exhaust holes 31 in two adjacent columns are arranged in a staggered manner; the diameter of the vent hole 31 is 20 mm.
The sand cores 2 and the external sand on the inner wall of the outer shell 1 are both resin sand.
The keel 3 is provided with a lifting lug 32 at the outer part of the outer shell 1.
The working principle of the utility model is as follows: by adopting the tubular keel, holes are drilled in the circumferential direction of the extension direction of the keel, so that the keel can play a role in facilitating drawing and hoisting, and meanwhile, the smoke generated in the casting process can be helped to be discharged from two ends of the keel; the top exhaust of the originally single sand box of the casting sand box is changed into a mode of combining the top exhaust of the sand box and the keel exhaust for smoke exhaust; the detention time of the oil fume in the cavity is greatly shortened, the quality of the casting is greatly improved, and the defects of shrinkage cavities and bubbles are overcome.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a casting sand box structure based on can breathing freely fossil fragments which characterized in that: comprises an outer shell, a sand core and a keel;
the outer shell comprises a first parting box body and a second parting box body; the first parting box body and the second parting box body are parted in the horizontal direction, and a parting surface is formed at the parting position; arc-shaped grooves for clamping keels are formed in the joint surface of the first parting box body and the joint surface of the second parting box body; the inner wall of the outer shell is provided with outer molding sand; the outer shell is provided with a casting hole and a plurality of air holes;
the sand core is arranged on the keel and is arranged in the outer shell; a casting cavity is formed between the sand core and the shape sand on the inner wall of the outer shell;
the keel is of a cylindrical tubular structure and is horizontally arranged, and two ends of the keel are opened; two ends of the keel penetrate through the sand core and the outer shell and extend out of the outer side of the outer shell; the keel is circumferentially provided with a plurality of exhaust holes along the extending direction, and the exhaust holes are communicated with the inner cavity of the cylindrical tubular keel.
2. The structure of claim 1, wherein the structure of the casting flask is based on a ventilating keel, and is characterized in that: the exhaust holes are arranged in a plurality of rows in the circumferential direction of the keel, and the exhaust holes in each row are arranged on the keel at equal intervals; the exhaust holes of two adjacent columns are arranged in a staggered manner; the diameter of the vent hole is 20 mm.
3. The structure of claim 1, wherein the structure of the casting flask is based on a ventilating keel, and is characterized in that: and the sand core and the external sand on the inner wall of the shell are both resin sand.
4. The structure of claim 1, wherein the structure of the casting flask is based on a ventilating keel, and is characterized in that: the lateral part that is located the shell body on the fossil fragments is provided with the lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122524649.1U CN216656263U (en) | 2021-10-20 | 2021-10-20 | Casting sand box structure based on can breathe freely fossil fragments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122524649.1U CN216656263U (en) | 2021-10-20 | 2021-10-20 | Casting sand box structure based on can breathe freely fossil fragments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216656263U true CN216656263U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122524649.1U Active CN216656263U (en) | 2021-10-20 | 2021-10-20 | Casting sand box structure based on can breathe freely fossil fragments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216656263U (en) |
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2021
- 2021-10-20 CN CN202122524649.1U patent/CN216656263U/en active Active
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