Mould and filter screen suite applied to vertical line green sand casting

Abstract

The utility model discloses a mould and filter screen suite applied to vertical line green sand casting, which comprises a mould template, the mould template is provided with a pouring cup and a casting cavity, the pouring cup is communicated with the casting cavity through a pouring gate, and the pouring cup is an oblique cone closing opening; the conformal fiber filter screen comprises a flat plate part, a hemisphere part and a clamping part; a center hole is formed in the center of the flat plate part, a round opening of the hemisphere part is fixedly connected with the edge of the center hole, and the hemisphere part can be tangentially matched with an oblique cone closing opening of a pouring cup; the side edge of the flat plate part is fixedly connected with the clamping part, and the included angle between the clamping part and the flat plate part is 30-60 degrees. The follow-up fiber filter screen can be automatically placed in the vertical line green sand casting process, slag in iron liquid is effectively prevented from entering a casting cavity, and the effect of improving the casting slag hole problem is obvious.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a mold and a filter screen kit applied to vertical green sand casting. Background Art

[0002] In the traditional green sand casting method, the use of fiber filter screens to solve the problem of slag holes in castings has been widely applied. However, in vertical green sand casting, due to inconvenient placement, it is difficult to apply. Vertical green sand casting is a casting process with a high degree of automation. It uses a vertical molding line for production and can achieve automation in the sand mixing process, molding process, pouring process, shakeout and cleaning process, and mold transfer process. Vertical green sand casting improves the quality of castings through a high automation rate, but to further improve the quality of castings, a filter screen needs to be used in the production process, and a filter screen that can be automatically placed is required.

[0003] Publication No.: CN203956019U discloses a planetary gear carrier casting mold, including an extrusion molding die bottom plate; a pouring cup is provided on the extrusion molding die bottom plate, a ceramic filter screen is provided below the pouring cup, a sprue is provided below the ceramic filter screen, a side sprue is provided below the sprue, and a submerged gate is provided at the end of the side sprue; the vertical flaskless molding shares a pouring cup and a sprue, and there is one side sprue on each of the left and right sides, and a submerged gate is provided in the 36° direction.

[0004] This prior art is for green sand casting, and the setting method of its ceramic filter screen cannot be applied to vertical green sand casting with a high degree of automation.

[0005] In summary, the technical solutions, the technical problems to be solved, and the beneficial effects of the above disclosed technologies are all different from those of the present utility model. For more technical features, technical problems to be solved, and beneficial effects of the present utility model, there is no technical inspiration in the above disclosed technical documents. Content of the Utility Model

[0006] Aiming at the above-mentioned defects existing in the prior art, the purpose of the present utility model is to provide a mold and a filter screen kit applied to vertical green sand casting.

[0007] To achieve the above object, the present utility model adopts the following technical solutions:

[0008] A mold and filter screen kit for vertical green sand casting, comprising a mold plate, the mold plate is provided with a sprue cup and a casting cavity, the sprue cup is communicated with the casting cavity through a runner, and the sprue cup is a tapered and closed structure; it also includes a conformable fiber filter screen, the conformable fiber filter screen includes a flat plate part, a hemispherical part, and a clamping part; a central hole is arranged at the center of the flat plate part, the circular opening of the hemispherical part is fixedly connected to the edge of the central hole, and the hemispherical part can be tangentially matched with the tapered and closed opening of the sprue cup; the side of the flat plate part is fixedly connected with the clamping part, and the included angle between the clamping part and the flat plate part is 30°-60°.

[0009] Preferably, the flat plate part is rectangular.

[0010] Preferably, the included angle between the clamping part and the flat plate part is 45°.

[0011] Preferably, the flat plate part, the hemispherical part, and the clamping part are all made of high-silica glass fiber woven; the flat plate part and the hemispherical part, and the flat plate part and the clamping part are all connected by hot pressing.

[0012] More preferably, ceramic strips are inserted through the flat plate part and the clamping part.

[0013] The utility model has the following beneficial effects compared with the prior art:

[0014] The utility model enables the automatic placement of the conformable fiber filter screen in vertical green sand casting, effectively blocking the slag in the molten iron from entering the casting cavity, and significantly improving the problem of casting slag holes. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a mold and filter screen kit for vertical green sand casting of the utility model.

[0016] In the figure: 1. Mold plate; 2. Sprue cup; 3. Runner; 4. Casting cavity; 5. Conformable fiber filter screen; 51. Flat plate part; 52. Hemispherical part; 53. Clamping part. Detailed Embodiments

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figure 1 , a mold and filter screen kit for vertical green sand casting provided by the present utility model, comprising a mold plate 1 and a conformable fiber filter screen 5.

[0019] The mold template 1 is provided with a sprue cup 2 and a casting cavity 4. The sprue cup 2 is connected to the casting cavity 4 through a runner 3. The sprue cup 2 has a tapered opening with a slope.

[0020] The conforming fiber filter screen 5 includes a flat plate portion 51, a hemispherical portion 52, and a clamping portion 53. A central hole is provided in the center of the flat plate portion 51. The circular opening of the hemispherical portion 52 is fixedly connected to the edge of the central hole. The side of the flat plate portion 51 is fixedly connected to the clamping portion 53. The included angle between the clamping portion 53 and the flat plate portion 51 is 30° - 60°.

[0021] Among them, the runner 3 includes a vertical runner and a horizontal runner.

[0022] Among them, the hemispherical portion 52 can be tangentially fitted with the tapered opening of the sprue cup 2 to achieve automatic positioning.

[0023] Among them, after the hemispherical portion 52 is positioned, the flat plate portion 51 contacts the mold template to provide support.

[0024] Among them, the inclined clamping portion 53 facilitates the clamping and placement by a manipulator, realizing automated production.

[0025] Preferably, the flat plate portion 51 is rectangular.

[0026] Preferably, the included angle between the clamping portion 53 and the flat plate portion 51 is 45°.

[0027] Preferably, the flat plate portion 51, the hemispherical portion 52, and the clamping portion 53 are all made by weaving high-silica glass fibers. The flat plate portion 51 is thermally pressed and connected to the hemispherical portion 52 and the flat plate portion 51 is thermally pressed and connected to the clamping portion 53.

[0028] More preferably, ceramic strips are inserted through the flat plate portion 51 and the clamping portion 53 to enhance the stiffness of the flat plate portion 51 and the clamping portion 53, facilitating clamping and placement. The ceramic strips can be directly placed during weaving or fixed by later stitching.

[0029] In vertical green sand casting, after molding is completed, the mechanical arm places the conforming fiber filter screen 5 on the sprue cup 2 of the mold template 1 through the clamping portion 53. The hemispherical portion 52 is automatically positioned with the sprue cup 2, and then automatic casting is carried out. The conforming fiber filter screen 5 can effectively prevent slag in the molten iron from entering the casting cavity 4, and the improvement effect of the casting slag hole problem is obvious.

[0030] In this application, any component itself that is not elaborated and the connection methods of each component in this application belong to the well-known technologies in the technical field. They can be directly applied and will not be elaborated further.

[0031] In the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed" and the like shall be understood in a broad sense. For example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "joined" may be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0033] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0034] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A mold and a filter screen kit applied to vertical green sand casting, comprising a mold plate, wherein the mold plate is provided with a pouring cup and a casting cavity, and the pouring cup is communicated with the casting cavity through a runner, and is characterized in that, The sprue cup has an inclined conical shape with a narrowed opening; It further includes a shaped fiber filter screen, and the shaped fiber filter screen includes a flat plate part, a hemispherical part, and a clamping part; A central hole is provided at the center of the flat plate part, and the circular opening of the hemispherical part is fixedly connected to the edge of the central hole. The hemispherical part can be tangentially fitted with the inclined conical narrowing opening of the sprue cup; The side of the flat plate part is fixedly connected to the clamping part, and the included angle between the clamping part and the flat plate part is 30° - 60°.

2. The mold and filter screen kit applied to vertical green sand casting according to claim 1, wherein The flat plate part is rectangular.

3. A mold and a filter screen kit applied to vertical green sand casting according to claim 1, characterized in that, The included angle between the clamping part and the flat plate part is 45°.

4. A mold and filter screen kit applied to vertical green sand casting according to claim 1, characterized in that, The flat plate part, the hemispherical part, and the clamping part are all made by weaving high-silica glass fibers; the flat plate part is thermally pressed and connected to the hemispherical part and the flat plate part is thermally pressed and connected to the clamping part.

5. A mold and filter screen kit applied to vertical green sand casting according to claim 4, characterized in that, Ceramic strips are inserted through the flat plate part and the clamping part.

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