CN212664847U - Manufacturing device of composite sand core - Google Patents
Manufacturing device of composite sand core Download PDFInfo
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- CN212664847U CN212664847U CN202022307653.8U CN202022307653U CN212664847U CN 212664847 U CN212664847 U CN 212664847U CN 202022307653 U CN202022307653 U CN 202022307653U CN 212664847 U CN212664847 U CN 212664847U
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Abstract
The utility model provides a device for manufacturing a composite sand core, which comprises a die, wherein the die is divided into an upper die and a lower die, the upper die and the lower die are matched, a cavity is formed in the middle, and a flow passage for sand shooting is arranged; the molding sand casting mould is characterized by also comprising a metal fiber net, wherein the mesh number of the metal fiber net is smaller than that of the minimum molding sand; the clamping devices are arranged on the die and used for clamping the metal fiber nets to divide the interior of the die into a plurality of areas; the utility model has the advantages that: the sand core is designed with several functional areas according to the product performance requirement, and may be filled with different kinds of sand to reach the technological purposes of heat preservation, chilling, ventilation, structure strengthening, etc. and to change the temperature change in the casting crystallization process, so that the casting may be solidified simultaneously or in the required sequence to produce casting product.
Description
Technical Field
The utility model relates to a making devices of compound psammitolite.
Background
The sand core is manufactured by adopting the same type of sand at present, each sand for casting plays a specific role in the solidification and crystallization process of a casting, and the casting structure is more and more complex along with the light weight, the functionalization and the integration of a product design and the module, so that the sand core manufactured by the prior process cannot meet the production and manufacturing requirements of partial products.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects and providing a manufacturing method of a composite sand core, which designs a plurality of functional areas of the sand core according to the performance requirements of products, fills different types of sand respectively, each type of sand for casting plays a specific role in the solidification and crystallization process of castings, and can play different technical purposes of heat preservation, chilling, ventilation, structure strengthening and the like in the plurality of functional areas; the temperature change in the casting crystallization process can be changed, so that the castings can be solidified simultaneously or sequentially according to the process requirements, and casting products meeting the requirements can be produced.
The utility model adopts the following technical scheme:
a manufacturing method of a composite sand core comprises the following steps:
the method comprises the following steps: the interior of the mold is divided into several zones.
Step two: different types of sand are injected into different areas according to the casting process requirements.
Step three: and after the molding sand is completely hardened, taking out the sand core.
Preferably, in the step one, a plurality of metal fiber nets are adopted to divide the interior of the mold into a plurality of areas; the mesh number of the metal fiber net is smaller than that of the minimum molding sand.
Preferably, the third step is: and after the molding sand is completely hardened, taking out the sand core, and finishing the metal fiber net outside the sand core.
Preferably, in the first step, a plurality of displacement pieces are arranged in the mold, part of the cavity of the mold is blocked by the displacement pieces according to the process requirements of the casting, sand is injected into other cavities of the mold, after 10-30 seconds, the displacement pieces rise or fall to expose the cavity blocked before, and different sand materials are injected according to the process requirements to fill the cavity; at this time, the previously injected sand is not completely solidified, and is bonded and solidified with the newly injected sand to form an integral body.
Preferably, in the first step, the mold is provided with multiple runners, and the multiple runners respectively lead to the same or different areas; in the second step, different molding sand is injected into different areas through the runners by an automatic core shooter.
The manufacturing device of the composite sand core comprises a die, wherein the die is divided into an upper die and a lower die which are matched with each other, a cavity is formed in the middle of the upper die and the lower die, and a runner for sand shooting is arranged in the middle of the upper die and the lower die; the molding sand casting mould is characterized by also comprising a metal fiber net, wherein the mesh number of the metal fiber net is smaller than that of the minimum molding sand; and the clamping devices are arranged on the mould and used for clamping the metal fiber nets to divide the interior of the mould into a plurality of areas.
Preferably, the clamping device comprises: the groove is arranged on the frame of the lower die, and a pressing groove is formed in one side of the groove; the spring is fixedly arranged in the groove; one end of the movable pressing block is fixedly arranged on the spring, and the movable pressing block is matched with the pressing groove.
The manufacturing device of the composite sand core comprises a die, wherein the die is divided into an upper die and a lower die which are matched with each other, a cavity is formed in the middle of the upper die and the lower die, and a runner for sand shooting is arranged in the middle of the upper die and the lower die; the die is provided with a plurality of accommodating cavities according to the characteristics of the casting; moving blocks are arranged in the accommodating cavities; the lower moving blocks are fixedly connected with hydraulic rods, and the moving blocks can enter the cavity under the pushing of the hydraulic rods.
Preferably, the plurality of accommodating cavities are arranged in the lower die; a protruding strip is arranged on the side surface of the moving block; the upper part of the convex strip is lower than the bottom surface of the moving block, the cross section of the convex strip is in a dovetail shape, and the cross section of the convex strip is in a trapezoid shape with a large lower part and a small upper part.
Preferably, the accommodating cavities are arranged in the upper die; a protruding strip is arranged on the side surface of the moving block; the lower part of the convex strip is higher than the bottom surface of the moving block, the cross section of the convex strip is in a dovetail shape, and the cross section of the convex strip is in a trapezoid shape with a small lower part and a large upper part.
The utility model has the advantages that: the sand core is provided with a plurality of functional areas according to the product performance requirements, and the sand core can be respectively filled with different types of sand so as to achieve the process purposes of heat preservation, chilling, ventilation, structure strengthening and the like, and further change the temperature change in the casting crystallization process, so that the castings are solidified simultaneously or sequentially according to the process requirements, and the casting products meeting the requirements are produced.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of the present invention.
Fig. 2 is a partial schematic view of a first embodiment of the present invention.
Fig. 3 is a schematic diagram of a second embodiment of the present invention.
Fig. 4 is a schematic view in the direction a of fig. 3.
Fig. 5 is a bottom view of the second embodiment of the present invention.
Fig. 6 is a schematic diagram of a third embodiment of the present invention.
Fig. 7 is a schematic view in the direction a of fig. 6.
Fig. 8 is a plan view of a third embodiment of the present invention.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following description is made with reference to the accompanying drawings and embodiments to further explain the present invention:
a manufacturing method of a composite sand core comprises the following steps:
the method comprises the following steps: the interior of the mold is divided into several zones.
Step two: different types of sand are injected into different areas according to the casting process requirements.
Step three: and after the molding sand is completely hardened, taking out the sand core.
Preferably, the third step is: and after the molding sand is completely hardened, taking out the sand core, and finishing the metal fiber net outside the sand core.
Preferably, in the first step, a plurality of displacement pieces are arranged in the mold, part of the cavity of the mold is blocked by the displacement pieces according to the process requirements of the casting, sand is injected into other cavities of the mold, after 10-30 seconds, the displacement pieces rise or fall to expose the cavity blocked before, and different sand materials are injected according to the process requirements to fill the cavity; at this time, the previously injected sand is not completely solidified, and is bonded and solidified with the newly injected sand to form an integral body.
Preferably, in the first step, the mold is provided with multiple runners, and the multiple runners respectively lead to the same or different areas; in the second step, different molding sand is injected into different areas through the runners by an automatic core shooter.
The first embodiment is as follows:
preferably, as shown in fig. 1 and 2, in the first step, a plurality of metal fiber nets 1 are used to divide the interior of the mold into a plurality of areas; the mesh number of the metal fiber net 1 is smaller than that of the minimum molding sand; the die comprises an upper die 21 and a lower die 22, wherein a plurality of clamping mechanisms 3 are designed on the frame of the lower die 22 according to design requirements, the metal fiber net 1 is placed into the die, and two clamping mechanisms 3 are respectively placed on two sides of the metal fiber net.
The clamping mechanism 3 comprises a groove 31, a spring 32 and a movable pressing block 33; the groove 31 is arranged on the frame of the lower die 22, and a pressing groove 34 is arranged on one side of the groove; the spring 32 is fixedly arranged in the groove 31; one end of the movable pressing block 33 is fixedly arranged on the spring 32, and the movable pressing block 33 is matched with the pressing groove 34.
When the metal fiber net fixing device is used, one end of the movable pressing block 33, which is not fixed with the spring 32, can be pulled up, one side of the metal fiber net 1 is put in, the movable pressing block 33 is pressed down, the metal fiber net 1 is preliminarily fixed, when the upper die 21 presses the upper die 22 and the lower die 22, the movable pressing block 33 is pressed into the groove 31, and the movable pressing block 33 is matched with the pressing groove 34 to completely fix the metal fiber net 2; different molding sand is injected into different areas through the runners by the automatic core shooter, the different areas are separated by the metal fiber nets 1, so the molding sand types in the areas can be different, the normal operation can be ensured only by using the metal fiber nets due to large impact force, after all the parts are solidified, the sand cores are taken out, and the metal fiber nets at the edges are trimmed.
Example two:
preferably, as shown in fig. 3 to 5, a plurality of regions are provided in the cavity inside the mold 2, and the mold includes an upper mold 21 and a lower mold 22; the lower die 22 is provided with a plurality of accommodating cavities according to the characteristics of a casting, the accommodating cavities are provided with lower moving blocks 221, the lower moving blocks 221 are fixedly connected with hydraulic rods (not shown in the figure), the upper die 21 is matched with the lower die 22 to form a cavity in the middle, the lower moving blocks 221 are pushed by the hydraulic rods to fill the cavity, after an automatic core shooter injects one type of molding sand into the cavity, the lower moving blocks 221 return under the control of the hydraulic rods after 10-30 seconds, and the other type of molding sand is injected into the cavity by the automatic core shooter; at this time, the sand material injected previously is not completely solidified, and after the sand material is mutually bonded and solidified with the newly injected sand material, the sand core is formed into a whole, and after the sand core is completely solidified, the sand core is taken out.
Preferably, the side surface of the lower moving block 221 is provided with a protruding strip, the upper part of the protruding strip is lower than the bottom surface of the lower moving block 221, the cross section of the protruding strip is in a dovetail shape, and the section of the protruding strip in the direction a is in a trapezoid shape with a large lower part and a small upper part.
Protruding strip below is less than down the movable block 221 bottom surface for two kinds of molding sands form the vertical direction screens, and protruding strip cross section becomes the screens that the dovetail form further formed the horizontal direction after solidifying two kinds of molding sands, and the trapezoidal of big-end-up then is the area of contact between the two kinds of molding sands of increaseing under the cross-section of protruding strip A direction is, makes to solidify the back more firm.
Example three:
preferably, as shown in fig. 6 to 8, a plurality of regions are provided in a cavity inside the mold 2, and the mold includes an upper mold 21 and a lower mold 22; the upper die 21 is provided with a plurality of containing cavities according to the characteristics of castings, the containing cavities are provided with upper moving blocks 211, the upper moving blocks 211 are fixedly connected with hydraulic rods, the upper die 21 is matched with the lower die 22, a cavity is formed in the middle of the upper die, the moving blocks are pushed by the hydraulic rods to fill the cavity, after the automatic core shooter injects one type of molding sand into the cavity, the moving blocks return under the control of the hydraulic rods after 10-30 seconds, and the automatic core shooter injects the other type of molding sand into the cavity; at this time, the sand material injected previously is not completely solidified, and after the sand material is mutually bonded and solidified with the newly injected sand material, the sand core is formed into a whole, and after the sand core is completely solidified, the sand core is taken out.
Preferably, a protruding strip is arranged on the side surface of the upper moving block 211, the lower part of the protruding strip is higher than the bottom surface of the upper moving block 211, the cross section of the protruding strip is in a dovetail shape, and the section of the protruding strip in the direction a is in a trapezoid shape with a small lower part and a large upper part; the design point is the same as the lower moving block 221, and the description is omitted here.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred 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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The components adopted by the utility model are all universal standard components or components known by the technicians in the field, and the structure and the principle of the components are known by the technicians through technical manuals or conventional experimental methods.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still belong to the protection scope of the present invention.
Claims (5)
1. The manufacturing device of the composite sand core comprises a die, wherein the die is divided into an upper die and a lower die which are matched with each other, a cavity is formed in the middle of the upper die and the lower die, and a runner for sand shooting is arranged in the middle of the upper die and the lower die; the method is characterized in that:
the molding sand casting mould is characterized by also comprising a metal fiber net, wherein the mesh number of the metal fiber net is smaller than that of the minimum molding sand;
and the clamping devices are arranged on the mould and used for clamping the metal fiber nets to divide the interior of the mould into a plurality of areas.
2. The apparatus of claim 1, wherein the clamping means comprises:
the groove is arranged on the frame of the lower die, and a pressing groove is formed in one side of the groove;
the spring is fixedly arranged in the groove;
one end of the movable pressing block is fixedly arranged on the spring, and the movable pressing block is matched with the pressing groove.
3. The manufacturing device of the composite sand core comprises a die, wherein the die is divided into an upper die and a lower die which are matched with each other, a cavity is formed in the middle of the upper die and the lower die, and a runner for sand shooting is arranged in the middle of the upper die and the lower die; the method is characterized in that:
the die is provided with a plurality of accommodating cavities according to the characteristics of the casting;
moving blocks are arranged in the accommodating cavities;
the lower moving blocks are fixedly connected with hydraulic rods, and the moving blocks can enter the cavity under the pushing of the hydraulic rods.
4. The apparatus of claim 3, wherein:
the plurality of accommodating cavities are arranged in the lower die;
a protruding strip is arranged on the side surface of the moving block;
the upper part of the convex strip is lower than the bottom surface of the moving block, the cross section of the convex strip is in a dovetail shape, and the cross section of the convex strip is in a trapezoid shape with a large lower part and a small upper part.
5. The apparatus of claim 3, wherein:
the accommodating cavities are arranged in the upper die;
a protruding strip is arranged on the side surface of the moving block;
the lower part of the convex strip is higher than the bottom surface of the moving block, the cross section of the convex strip is in a dovetail shape, and the cross section of the convex strip is in a trapezoid shape with a small lower part and a large upper part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022307653.8U CN212664847U (en) | 2020-10-16 | 2020-10-16 | Manufacturing device of composite sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022307653.8U CN212664847U (en) | 2020-10-16 | 2020-10-16 | Manufacturing device of composite sand core |
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| Publication Number | Publication Date |
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| CN212664847U true CN212664847U (en) | 2021-03-09 |
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| CN202022307653.8U Active CN212664847U (en) | 2020-10-16 | 2020-10-16 | Manufacturing device of composite sand core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122555A (en) * | 2020-10-16 | 2020-12-25 | 龙岩市龙象机械设备制造有限公司 | Manufacturing method and manufacturing device of composite sand core |
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- 2020-10-16 CN CN202022307653.8U patent/CN212664847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122555A (en) * | 2020-10-16 | 2020-12-25 | 龙岩市龙象机械设备制造有限公司 | Manufacturing method and manufacturing device of composite sand core |
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