Mould for connecting risers in series in vertical line green sand casting

Abstract

The utility model discloses a die for connecting risers in series in vertical line green sand casting, which comprises a die template, a pouring cup is arranged at the top of the die template, and at least two risers which are vertically arranged and communicated are arranged in the die template; casting cavities are formed in the left side and the right side of each riser, and each riser is communicated with the casting cavity on the same layer; a thin sheet is fixedly arranged between every two risers, and the risers are not sealed by the thin sheets; the sprue cup is communicated with the uppermost riser through a cross gate; the top of the uppermost riser is provided with a first taper angle; a second taper angle is arranged at the bottom of the sheet; a slag collecting groove is formed in the bottom of the lowest riser. A vertical pouring gate and a vertical pouring gate in the traditional casting process are omitted, the space size of the template can be better utilized, and therefore the yield of the casting process is improved, and the manufacturing cost of castings is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, and particularly to a mold for a series riser in vertical green sand casting. Background Art

[0002] In the process design of a vertical green sand casting mold, the gating system consists of units such as a sprue cup, a cross gate, a vertical gate, an ingate, and a riser. Limited by the size of the pattern plate, the casting process yield is often low.

[0003] Publication No.: CN221336508U, which discloses a direct sprue mold for a crankshaft with a high yield, including a crankshaft and a gating system. The gating system includes a sprue cup, a first slag filter sheet, a second slag filter sheet, a third slag filter sheet, a first vertical gate, a second vertical gate, a fourth slag filter sheet, a lap joint, a columnar riser, a second cross gate, a first cross gate, an ingate, and a casting cavity. The first slag filter sheet is arranged at the lower end of the sprue cup, and the upper port of the first vertical gate is communicated with the first slag filter sheet. By using the columnar riser to compensate for the shrinkage of the casting, the heat of the columnar riser is relatively concentrated, so that the riser solidifies last, achieving a good compensation effect and improving the quality of the casting.

[0004] Publication No.: CN205043091U, which discloses a casting mold for a cylinder block of a compressor, including a positive template and a negative template. Corresponding to each other on the positive template and the negative template, there are respectively a sprue cup, a vertical gate, at least two cross gates, and a buffer groove. The vertical gate is arranged at the lower end of the sprue cup. The at least two cross gates are respectively arranged at intervals on the side of the vertical gate and are respectively communicated with the vertical gate. The buffer groove is opened at one end of the vertical gate far from the sprue cup. By arranging the buffer groove at the end of the vertical gate, the sand slag existing in the casting liquid can precipitate into the buffer groove, avoiding the slag holes in the casting product caused by the sand slag in the flowing liquid. At the same time, when the casting liquid is excessive, the redundant casting liquid is stored to prevent cracks on the outer surface of the casting when the casting liquid is extruded in the cavity, improving the quality of the casting product.

[0005] The gating designs of the above prior arts occupy a large amount of space and reduce the yield of casting.

[0006] In summary, the technical solutions, the technical problems to be solved, and the beneficial effects generated by 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

[0007] Aiming at the above defects existing in the prior art, the purpose of the present utility model is to provide a mold for a series riser in vertical green sand casting.

[0008] To achieve the above object, the utility model adopts the following technical solutions:

[0009] A mold for a series of risers in vertical green sand casting, comprising a mold plate, a sprue cup is arranged at the top of the mold plate, and at least two risers arranged vertically and communicated are arranged in the mold plate; casting cavities are arranged on the left and right sides of each riser, and each riser is communicated with the casting cavities of the same layer; a thin sheet is fixedly arranged between every two risers, and the thin sheet does not close the riser; the sprue cup is communicated with the uppermost riser through a horizontal runner; a first taper angle is arranged at the top of the uppermost riser; a second taper angle is arranged at the bottom of the thin sheet; a slag collecting groove is arranged at the bottom of the lowermost riser.

[0010] Further, the first taper angle is arranged at the central position of the top of the uppermost riser, and the second taper angle is arranged at the central position of the bottom of the thin sheet.

[0011] Further, the thickness of the thin sheet is 2-5 mm, and the thin sheet occupies one-fourth to one-half of the area of the riser.

[0012] The utility model has the following beneficial effects compared with the prior art:

[0013] 1. The utility model is provided with upper and lower series-connected risers, and casting cavities are arranged on both sides of the risers, so that a single riser can feed two castings, and the vertical sprue and vertical runner in the traditional casting process are cancelled, and the space size of the mold plate can be better utilized, thereby improving the casting process yield and reducing the manufacturing cost of the casting.

[0014] 2. The thin sheet arranged in the utility model can reduce the flow rate of the molten iron during casting, weaken the impact of the molten iron, and improve the production quality.

[0015] 3. The first taper angle and the second taper angle in the utility model can generate tips during casting, guide the generation of shrinkage cavities, and make the shrinkage cavities more controllable. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a mold for a series of risers in vertical green sand casting of the utility model.

[0017] In the figure: 1. Mold plate; 2. Sprue cup; 3. Horizontal runner; 4. Risers; 41. Uppermost riser; 42. Lowermost riser; 5. Casting cavity; 6. Thin sheet; 7. First taper angle; 8. Second taper angle; 9. Slag collecting groove. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1 , a mold for a series of risers in vertical green sand casting provided by the present utility model includes a mold plate 1, in which at least two risers 4 arranged vertically and communicating with each other are provided. Casting cavities 5 are arranged on the left and right sides of each riser 4. Each riser 4 communicates with the casting cavities 5 of the same layer. A sprue cup 4 is arranged on the top of the mold plate 1. The sprue cup 4 is communicated with the left and right sides of the top of the uppermost riser 41 through a horizontal runner 3. A first taper angle 7 is arranged at the center position of the top of the uppermost riser 41. A thin sheet 6 is fixedly arranged between every two risers 4. The thin sheet 6 does not close the riser 4. A second taper angle 8 is arranged at the center position of the bottom of the thin sheet 6. A slag trap 9 is arranged at the bottom of the lowermost riser 42.

[0020] Among them, the vertically connected risers 4 perform feeding for the casting. The casting cavities 5 are placed on the left and right sides of a single riser 4, so that a single riser can feed two castings. In this way, the vertical sprue and vertical runner in the traditional casting process are cancelled, and the space size of the mold plate can be better utilized, thereby improving the yield of the casting process and reducing the manufacturing cost of the casting.

[0021] Among them, the thickness of the thin sheet 6 is 2-5 mm, and the thin sheet 6 occupies one-fourth to one-half of the area of the riser 4. The thin sheet 6 is used to reduce the flow rate of the molten iron during casting, play a role in slowing down the flow, weaken the impact of the molten iron, and improve the production quality.

[0022] Among them, the first taper angle 7 and the second taper angle 8 are used to generate a tip during casting, guide the generation of shrinkage cavities, and make the shrinkage cavities more controllable.

[0023] In this application, all the components themselves that are not elaborated and the connection methods of the components in this application belong to the well-known technologies in the technical field. They can be directly applied and will not be elaborated.

[0024] In the present utility model, the term "a plurality" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can 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.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "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.

[0026] 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.

[0027] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, 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 for a series riser in vertical green sand casting, including a mold plate, wherein a sprue cup is arranged at the top of the mold plate, and it is characterized in that, At least two risers arranged vertically and communicated with each other are provided in the die template; Casting cavities are provided on the left and right sides of each riser, and each riser is communicated with the casting cavities on the same layer; A thin sheet is fixedly arranged between every two risers, and the thin sheet does not seal the riser; The sprue cup is communicated with the uppermost riser through a runner; A first taper angle is provided at the top of the uppermost riser; A second taper angle is provided at the bottom of the thin sheet; A slag collecting groove is provided at the bottom of the lowermost riser.

2. The mold of a series riser in the vertical green sand casting according to claim 1, characterized in that, The first taper angle is provided at the center position of the top of the uppermost riser, and the second taper angle is provided at the center position of the bottom of the thin sheet.

3. A mold for a series riser in vertical green sand casting according to claim 1, characterized in that, The thickness of the thin sheet is 2-5 mm, and the thin sheet occupies one-fourth to one-half of the area of the riser.

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