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CN216881598U - Molding flask structure - Google Patents

Molding flask structure Download PDF

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Publication number
CN216881598U
CN216881598U CN202220006557.6U CN202220006557U CN216881598U CN 216881598 U CN216881598 U CN 216881598U CN 202220006557 U CN202220006557 U CN 202220006557U CN 216881598 U CN216881598 U CN 216881598U
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China
Prior art keywords
sand
molding
rectangular metal
molding sand
box body
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CN202220006557.6U
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Chinese (zh)
Inventor
郑建斌
陈忠振
邹泽昌
黄卫东
陈丙三
黄旭
陈忠士
陈贵清
蓝敏俐
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Fujian Xinghang Heavy Industry Co ltd
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Fujian Xinghang Heavy Industry Co ltd
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Abstract

The utility model relates to a molding sand box structure, which comprises a sand box body, wherein a partition plate is arranged in the sand box body according to the shape of a product, a product cavity formed by filling and molding sand is arranged in a space enclosed by the partition plate and the sand box body, the surface of the product cavity is provided with a shape molding layer and a core molding layer which are used for being connected with molten steel and made of new molding sand, molding sand recycling sand is filled among the partition plate, the sand box body and the shape molding layer and among the core of the product cavity and the core molding layer, and a casting channel with the upper end penetrating through the molding sand and the lower end extending into the product cavity is arranged in the sand box body. The sand-following sand box adopts the combination of new sand and waste sand of molding sand, and can effectively save the sand cost.

Description

Molding flask structure
Technical Field
The utility model relates to a molding box structure.
Background
When large castings are molded, the casting molding is usually carried out after the molding sand is used for molding, so that a large amount of molding sand needs to be consumed in the casting of the large castings, and the casting cost of the castings is increased invisibly. After the existing casting is finished, the sand mold is required to be damaged when the casting is taken out, so that a large amount of waste sand exists. The disposal of the waste sand is also a significant problem, as it is usually agglomerated and cannot be reused in the moulding of sand moulds. The large casting is because the core is isometric all great, and the foundry sand that the foundry sand can realize the product design in actual forming process only has certain thickness, if whole adopt the molding sand that does not use then cause the foundry goods fracture after the shaping easily, and pile up each other and owing to having the space shrinkage can be good at a waste sand, if can use then can practice thrift very big partly cost with the new sand cooperation waste sand of molding sand.
Disclosure of Invention
The utility model aims to provide a molding box structure, which combines new molding sand and waste molding sand for use, and can effectively save the sand cost.
The technical scheme of the utility model is as follows: the utility model provides a follow-up sand box, includes the sand box body, this internal baffle that is provided with according to the installation of product appearance of sand box is located and is provided with the product die cavity that forms after filling the molding by the molding sand in the space that encloses between baffle and the sand box body, the surface of product die cavity all has the one deck and is used for the appearance type layer and the core type layer that connect and make by the new sand of molding sand with the molten steel, it has molding sand retrieval and utilization sand all to fill between baffle, sand box body and the appearance type layer and between the core of product die cavity and the core type layer, is located that the sand box body establishes to have the upper end to wear out the casting passageway that its lower extreme of molding sand stretches into the product die cavity.
Furthermore, the sand box body comprises at least two rectangular metal frame bodies which are overlapped up and down, lifting lugs are respectively fixed at the front and rear parts of two sides of each rectangular metal frame body, a positioning structure is arranged between the surfaces of the molding sand of the two adjacent rectangular metal frame bodies, one end of the partition plate is connected with the inner wall of one end face of the inner cavity of each rectangular metal frame body, and the partition plate is obliquely arranged and the other end of the partition plate is connected with the other end of the inner cavity of each rectangular metal frame body.
Furthermore, the positioning structure comprises positioning concave parts positioned at four corners of the molding sand surface of the lower layer of rectangular metal frame body, the lower surface of the molding sand of the upper layer of rectangular metal frame body is correspondingly provided with positioning convex parts, and a limiting rod is further fixed at the side part of the lower layer of rectangular metal frame body.
Furthermore, the upper end of the casting channel penetrates out of the upper surface of the molding sand of the rectangular metal frame body on the uppermost layer, a conical aluminum shell covering the upper part of the pouring cup of the casting channel is arranged on the upper surface of the molding sand of the rectangular metal frame body on the uppermost layer, and a lower concave part is arranged on the upper surface of the molding sand around the aluminum shell.
Furthermore, the surface of the appearance molding layer and the surface of the mold core molding layer are coated with a high-temperature-resistant coating layer, and a plurality of vent pipes extending into the mold core penetrate through the upper surface of the sand box body.
Furthermore, the high-temperature-resistant coating layer is zircon powder alcohol-based coating, and the molding sand recycling sand is composed of waste sand and/or stones.
Compared with the prior art, the utility model has the following advantages: this molding sand box adopts new sand of molding sand and useless sand to combine to use to and set up the baffle according to the product appearance, thereby can reduce the use amount of the new sand of molding sand, effective using-up sand cost reaches the wastes material and recycles, has also solved the processing of a most useless sand.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a bottom view of the upper die formed in the upper rectangular metal frame of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 1 of the present invention;
FIG. 4 is a cross-sectional view B-B of FIG. 1 of the present invention;
FIG. 5 is a schematic diagram of the structure for achieving drainage of sand in accordance with the present invention;
in the figure: 1-product cavity 2-appearance modeling layer 2 b-mold core modeling 3-product appearance structure 4-mold core 5-molding sand recycled sand 6-casting channel 7-rectangular metal frame 8-lifting lug 9-positioning concave part 10-positioning convex part 11-limiting rod 12-aluminum shell 13-lower concave part 14-high temperature resistant coating layer 15-ventilation pipe 20-clapboard.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Refer to fig. 1 to 5
A molding sand box comprises a sand box body, wherein a partition plate 20 installed according to the appearance of a product is arranged in the sand box body, so that the use of new molding sand is reduced. And a product cavity 1 formed after molding sand is filled and molded is arranged in a space enclosed between the partition plate and the sand box body, and a space which does not need to be filled with sand is reserved between the partition plate and the sand box body. The surface of the product cavity is provided with a shape molding layer 2a and a core molding layer 2b which are used for being connected with molten steel and are made of new molding sand, and molding sand recycling sand 5 is filled among the partition plate, the sand box body and the shape molding layer and among the core 4 of the product cavity and the core molding layer, so that the using amount of the new molding sand is reduced, and the cost is saved. A casting channel 6 with the upper end penetrating through the molding sand and the lower end extending into the product cavity is arranged in the sand box body, so that molten steel can be introduced into the product cavity through the casting channel.
In this embodiment, in order to better complete the molding of the product cavity, the flask body includes at least two rectangular metal frames 7 stacked up and down, and lifting lugs 8 are respectively fixed to the front and rear portions of two lateral sides of each rectangular metal frame, so as to realize the lifting of the rectangular metal frames. Be provided with location structure between the molding sand surface of two adjacent rectangle metal framework to accomplish the location when two rectangle metal framework pile up together, avoid taking place the displacement, cause the product casting deviation to appear. The one end of baffle and the inside wall of a terminal surface of rectangle metal framework inner chamber are connected, and the baffle slant sets up and the other end of rectangle metal framework inner chamber to install according to the product appearance, reduce the use amount of molding sand.
In this embodiment, in order to better realize the location of the rectangular metal framework after the molding, location structure is including being located the concave part 9 of the four corners on next floor rectangular metal framework molding sand surface, and the molding sand lower surface correspondence that is located the rectangular metal framework of last floor is provided with location convex part 10, and the lateral part that is located next floor rectangular metal framework still is fixed with gag lever post 11 to accomplish the hoist and mount location through the gag lever post.
In this embodiment, the upper end of the casting channel penetrates through the upper surface of the molding sand of the rectangular metal frame body on the uppermost layer and is provided with a casting structure, the upper surface of the molding sand of the rectangular metal frame body on the uppermost layer is provided with a conical aluminum shell 12 covering the upper part of the pouring cup of the casting channel, and the upper surface of the molding sand around the aluminum shell is provided with a lower concave part 13. The drainage sand can flow out of the upper part of the sprue cup along with the conical aluminum shell to the periphery and enter the lower concave part when the slide plate ladle is opened through the aluminum shell. When a large amount of molten steel flows out of the ladle hole, the aluminum shell is melted by the molten steel, and the molten steel enters the pouring cup along the same way, so that the drainage sand is prevented from entering the cavity. Meanwhile, the melting of the aluminum shell does not influence the weight of the molten steel, and the aluminum has the effect of deoxidation. In order to make the molten steel better break through the aluminum shell and to block the drainage sand, the thickness of the aluminum shell is 1, 2 or 3mm, preferably 2 mm.
In this embodiment, in order to make the surface of the cast product more smooth, flat and smooth, the surfaces of the external shape modeling layer and the core modeling layer are coated with a layer of high temperature resistant coating layer 14. A plurality of ventilation pipes 15 extending into the mold core penetrate through the upper surface of the sand box body, so that hot air of a product can be better exhausted when the product is cast.
In this embodiment, the high temperature resistant coating layer is zircon powder alcohol group coating, molding sand retrieval and utilization sand is the composition of waste sand and/or stone. The waste sand and the stone can be used independently; the waste sand and the stone can be mixed for use, but the proportion is not required. Meanwhile, hard materials such as wood waste and the like are added into the molding sand recycling sand, so that the cost is saved.
In order to realize the hardening of the molding sand, the binder is water glass, the catalyst is carbon dioxide, and the product appearance structure and the product core are hardened and molded by carbon dioxide in the through holes of the spaced jacks.
In this embodiment, the thickness of the molding layer is 5cm or more, preferably 5 to 10 cm. Because the binder is introduced into the new molding sand, the surface of the formed cavity of the product is tighter; and because the inside does not have mixed binder in the retrieval and utilization sand, the contractility is better, and can take place the shrink after the product casting is accomplished, uses through the cooperation of new sand and retrieval and utilization sand, can guarantee fashioned product appearance, can avoid the product again because of shrink not enough the crackle that appears.
In this embodiment, when casting a product, the steel bar frame is placed in the product cavity, and the anti-floating positioning blocks are arranged on the upper surface of the steel bar frame at intervals, so as to prevent the steel bar frame from floating in the product cavity.
In this embodiment, the molding sand may be quartz resin sand, and the molding sand related to the core may be chromite resin sand.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims (6)

1. The utility model provides a follow-up molding box structure, includes the sand box body, its characterized in that, this internal baffle that is provided with according to the installation of product appearance of sand box is located and is provided with the product die cavity that forms by the molding sand filling molding in the space that encloses between baffle and the sand box body, the surface of product die cavity all has the one deck and is used for the appearance type model layer and the core type model layer that connect and make by the new sand of molding sand with the molten steel, all pack between baffle, sand box body and the appearance type model layer and between the core of product die cavity and the core type model layer molding sand, it has the upper end to wear out the casting passageway that its lower extreme of molding sand stretches into the product die cavity to be located the sand box body and establishes.
2. The drag flask structure according to claim 1, wherein the flask body comprises at least two rectangular metal frames stacked up and down, the front and rear parts of two sides of the rectangular metal frames are respectively fixed with lifting lugs, a positioning structure is arranged between the molding sand surfaces of two adjacent rectangular metal frames, one end of the partition is connected with the inner wall of one end of the inner cavity of the rectangular metal frame, the partition is obliquely arranged, and the other end of the partition is connected with the other end of the inner cavity of the rectangular metal frame.
3. The drag flask structure of claim 2, wherein the positioning structure comprises positioning concave portions at four corners of the molding sand surface of the next rectangular metal frame, positioning convex portions are correspondingly provided on the lower molding sand surface of the previous rectangular metal frame, and a stopper rod is fixed to the side portion of the next rectangular metal frame.
4. The drag flask structure of claim 2 or 3, wherein the upper end of the casting channel penetrates through the upper surface of the molding sand of the uppermost rectangular metal frame, the upper surface of the molding sand of the uppermost rectangular metal frame is provided with a conical aluminum shell covering the upper part of the pouring cup of the casting channel, and the upper surface of the molding sand around the aluminum shell is provided with a depressed part.
5. The structure of the molding flask according to claim 1, 2 or 3, wherein the surfaces of the outer molding layer and the core molding layer are coated with a high temperature resistant coating layer, and a plurality of ventilation pipes extending into the core are arranged on the upper surface of the flask body in a penetrating way.
6. The drag flask structure of claim 5, wherein the refractory coating layer is a zircon powder alcohol-based coating, and the recycled molding sand is a waste sand and/or stone block.
CN202220006557.6U 2022-01-05 2022-01-05 Molding flask structure Active CN216881598U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220006557.6U CN216881598U (en) 2022-01-05 2022-01-05 Molding flask structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220006557.6U CN216881598U (en) 2022-01-05 2022-01-05 Molding flask structure

Publications (1)

Publication Number Publication Date
CN216881598U true CN216881598U (en) 2022-07-05

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ID=82210669

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220006557.6U Active CN216881598U (en) 2022-01-05 2022-01-05 Molding flask structure

Country Status (1)

Country Link
CN (1) CN216881598U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114309492A (en) * 2022-01-05 2022-04-12 福建兴航重工有限公司 Free sand box and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114309492A (en) * 2022-01-05 2022-04-12 福建兴航重工有限公司 Free sand box and construction method thereof
CN114309492B (en) * 2022-01-05 2024-06-25 福建兴航重工有限公司 Construction method of random sand box

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