Pouring device of cylinder block evanescent mode

Abstract

The utility model discloses a casting device for an evanescent mode of a cylinder body, relates to the field of evanescent mode processes, and solves the technical problem of serious reverse spraying in the casting process of the traditional cylinder body top casting process. The casting device comprises a casting frame, a plurality of first slag collecting risers and a plurality of second slag collecting risers, a plurality of ingates are detachably installed below the casting frame, a pouring cup is arranged above the casting frame, the ingates are communicated with the pouring cup, a cylinder block evanescent mode is placed on the casting frame, and the first slag collecting risers are communicated with the second slag collecting risers. The multiple inner pouring gates are communicated with multiple injection ports in the bottom of the cylinder block evanescent mode in a one-to-one correspondence mode, a plurality of first exhaust ports communicated with the first slag collecting riser are formed in the two sides of the upper portion of the cylinder block evanescent mode, and a plurality of second exhaust ports communicated with the second slag collecting riser are formed in the two sides of the upper portion of the cylinder block evanescent mode. Molten iron is filled from bottom to top during pouring, the foam vaporization process is stable, exhaust is smooth, and no reverse spraying phenomenon exists in the pouring process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lost foam process, more specifically, it relates to a pouring device for cylinder body lost foam. BACKGROUND

[0002] In the lost foam casting process, different foam materials are usually selected according to the different product materials. The white mold of gray iron material product generally selects polystyrene (EPS), and the white mold model material of nodular cast iron, vermiculite and steel product usually adopts copolymer (STMMA).

[0003] The cylinder body type product belongs to a kind of parts, and the product quality requirement is high. EPS is prone to carbon residue due to high carbon content, and it is difficult to control the quality of carbon residue defects in cylinder body parts. STMMA can greatly reduce carbon residue due to its low carbon content when used as white mold material for cylinder body. However, due to the large gas emission of STMMA material, the traditional cylinder body top pouring process will cause serious back spray during pouring, resulting in poor molten iron filling and a series of product quality problems. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem that the traditional cylinder body top pouring process will cause serious back spray during pouring.

[0005] The pouring device for cylinder body lost foam comprises a pouring frame, a plurality of first slag collecting risers and a plurality of second slag collecting risers. A plurality of inner runners are detachably installed below the pouring frame. A sprue cup is arranged at the top of the pouring frame. The inner runners and the sprue cup are connected in communication. The cylinder body lost foam is placed on the pouring frame, and the plurality of inner runners are connected in communication with the plurality of injection ports at the bottom of the cylinder body lost foam one by one. A plurality of first exhaust ports connected in communication with the first slag collecting risers are arranged on both sides above the cylinder body lost foam. A plurality of second exhaust ports connected in communication with the second slag collecting risers are arranged on both sides above the cylinder body lost foam.

[0006] Further improvement, the pouring frame comprises a straight runner, a horizontal runner, a first pouring pipe and a second pouring pipe. The top of the horizontal runner is fixedly connected with one end of the straight runner. The other end of the straight runner is fixedly connected with the sprue cup. The two ends of the bottom of the horizontal runner are connected with the first pouring pipe. A plurality of inner runners are installed on the first pouring pipe. The center of the bottom of the horizontal runner is fixedly connected with the second pouring pipe. An inner runner is installed on the second pouring pipe. The sprue cup, the straight runner, the horizontal runner, the first pouring pipe, the second pouring pipe and the inner runner are connected in sequence.

[0007] Further, the bottom of the inner runner is provided with external threads, the first pouring pipe and the second pouring pipe are each provided with a threaded hole corresponding to the external threads, and the inner runner is screwed onto the first pouring pipe and the second pouring pipe.

[0008] Further, the cross-sectional area of the end of the first slag collecting riser in communication with the lost foam of the cylinder block is smaller than the cross-sectional area of the top opening of the first slag collecting riser.

[0009] Further, the first slag collecting riser is in the shape of an I-beam.

[0010] Further, the second slag collecting riser is provided with an inverted trapezoidal section and a square section, the square section is fixedly installed on the top of the inverted trapezoidal section, and the inverted trapezoidal section, the square section and the second exhaust port are in communication.

[0011] Further, the inner runner is a polygonal column with a small upper part and a large lower part.

[0012] Further, the sprue cup is a resin sand sprue cup.

[0013] Further, the inner diameter of the cup mouth of the sprue cup is 120-140 mm, and the diameter of the cup bottom of the sprue cup is 30-50 mm.

[0014] Advantages

[0015] The utility model discloses the advantages are:

[0016] 1. The utility model discloses a pouring frame, a plurality of first slag collecting risers and a plurality of second slag collecting risers are arranged, a sprue cup is arranged on the upper portion of the pouring frame, the inner runner and the sprue cup are in communication, a cylinder body lost foam is placed on the pouring frame, a plurality of injection ports in the bottom of the cylinder body lost foam are in one-to-one correspondence and in communication with a plurality of inner runners, a plurality of first exhaust ports in the upper portion of the cylinder body lost foam are in communication with a plurality of first slag collecting risers on both sides, a plurality of second exhaust ports in the upper portion of the cylinder body lost foam are in communication with a plurality of second slag collecting risers on both sides, bottom pouring is adopted, molten iron fills the mold from bottom to top during pouring, the foaming vaporization process is stable, exhaust is smooth, and there is no back spray phenomenon during pouring.

[0017] 2. A plurality of inner runners are detachably installed below the pouring frame, the inner runners can be replaced in time when the inner runners are blocked or damaged, the flexibility of the inner runner installation is improved, and the working efficiency is improved. ACCURACY

[0018] Fig. 1 It is a three-dimensional structure schematic view of the pouring device of the utility model;

[0019] Fig. 2 It is a three-dimensional structure schematic view of the pouring frame of the utility model.

[0020] Wherein: 1-pouring frame, 2-first slag collector riser, 3-second slag collector riser, 4-inner runner, 5-pouring cup, 6-cylinder block lost foam, 7-straight runner, 8-cross runner, 9-first pouring pipe, 10-second pouring pipe, 11-inverted trapezoidal section structure, 12-square section structure. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with examples, but does not constitute any limitation to the utility model, and the limited number of modifications made by anyone within the scope of the utility model claims is still within the scope of the utility model claims.

[0022] Referring to Figs. 1-2 The utility model discloses a kind of pouring device of cylinder block lost foam, it includes pouring frame 1, multiple first slag collector riser 2 and multiple second slag collector riser 3.Slag collector riser is a kind of process device used in casting process, main purpose is to prevent cylinder block lost foam from appearing defect.It is usually attached above or side of cylinder block lost foam 6, and defect of cylinder block lost foam 6 is avoided by this way.

[0023] Multiple inner runners 4 are detachably installed below pouring frame 1, pouring cup 5 is equipped on the top of pouring frame 1, inner runner 4 and pouring cup 5 are communicated, cylinder block lost foam 6 is placed on pouring frame 1, and multiple inner runners 4 and multiple injection ports corresponding one-to-one on the bottom of cylinder block lost foam 6 are communicated, the two sides above cylinder block lost foam 6 are equipped with multiple first exhaust ports being communicated with first slag collector riser 2, the two sides above cylinder block lost foam 6 are equipped with multiple second exhaust ports being communicated with second slag collector riser 3.First exhaust port and second exhaust port are arranged to discharge gas generated during molten iron pouring process.

[0024] Five inner runners 4, three first slag collector risers 2 and seven second slag collector risers 3 are arranged in the embodiment.Five inner runners 4 are all towards the bottom of cylinder block lost foam 6, three first slag collector risers 2 are arranged at bearing file of cylinder block lost foam 6 respectively, and seven second slag collector risers 3 are arranged at edge position on the top of cylinder block lost foam 6 respectively.

[0025] Pouring frame 1 includes straight runner 7, cross runner 8, first pouring pipe 9 and second pouring pipe 10, the top of cross runner 8 and one end of straight runner 7 are fixedly connected, the other end of straight runner 7 and pouring cup 5 are fixedly connected, the two ends of the bottom of cross runner 8 are all connected with first pouring pipe 9, multiple inner runners 4 are equipped on first pouring pipe 9, the center of the bottom of cross runner 8 and second pouring pipe 10 are fixedly connected, and inner runner 4 is opened on second pouring pipe 10.Pouring cup 5, straight runner 7, cross runner 8, first pouring pipe 9, second pouring pipe 10 and inner runner 4 are communicated in sequence.

[0026] The bottom of the inner runner 4 is provided with an external thread, the first pouring pipe 9 and the second pouring pipe 10 are each provided with a threaded hole corresponding to the external thread, and the inner runner 4 is screwed on the first pouring pipe 9 and the second pouring pipe 10 to achieve detachable installation of the inner runner 4 and the pouring frame 1, so that the inner runner 4 can be replaced in time when the inner runner 4 is blocked or damaged, and the working efficiency is improved.

[0027] The first slag collecting riser 2 is in the shape of an I-beam. The first slag collecting riser 2 is provided in the shape of an I-beam to adapt to the lost foam 6 of the cylinder block and facilitate lifting through the middle of the first slag collecting riser 2 to move the first slag collecting riser 2.

[0028] The cross-sectional area of the end of the first slag collecting riser 2 communicating with the lost foam 6 of the cylinder block is smaller than the cross-sectional area of the top opening of the first slag collecting riser 2. In this way, when the molten iron is poured from bottom to top to the lost foam 6 of the cylinder block, the exhaust pressure at the first slag collecting riser 2 is reduced, and the exhaust is smoother.

[0029] The second slag collecting riser 3 is provided with an inverted trapezoidal section structure 11 and a square section structure 12, the square section structure 12 is fixedly installed at the top of the inverted trapezoidal section structure 11, and the inverted trapezoidal section structure 11, the square section structure 12 and the second exhaust port are in communication. The structure of the second slag collecting riser 3 is suitable for the lost foam 6 of the cylinder block and saves space.

[0030] The inner runner 4 is a polygonal column that is small at the top and large at the bottom. The inner runner 4 is set to be a polygonal column that is small at the top and large at the bottom, so that the molten iron flowing out of the first outlet 12, the second outlet 14 and the inner runner 4 is more concentrated, and the pressure of the molten iron pouring is increased.

[0031] In the embodiment, the cup opening diameter of the sprue cup 5 is 130 mm, the cup bottom diameter is 40 mm, and the height is 150 mm. The diameter of the straight runner 7 is Φ40 mm, and the length of the straight runner is 500 mm. The cross-sectional size of the cross runner 8 is 30 mm x 40 mm, and the length of the cross runner 8 is 420 mm. The cross-sectional size of the inner runner 5 is 8 mm x 40 mm, and the height is 40 mm. The size of the second slag collecting riser 3 is 20 mm x 80 mm x 60 mm, and the cross-sectional size of the water inlet position is 8 mm x 80 mm. 6, the height of the first type slag collecting riser 2 is 120 mm, and the cross-sectional size of the water inlet position is 8 mm x 35 mm.

[0032] The sprue cup 5 is a resin sand sprue cup. Resin sand has the advantage of high temperature resistance. The curing temperature of resin sand is relatively high, which can reach a high temperature of more than 150℃. Resin sand can withstand high temperature impact without burning, deforming or cracking, and will not cause secondary pollution to the mold or the lost foam of the cylinder block. Resin sand has high molding precision: resin sand casting has the characteristics of high precision, high surface finish and small shrinkage, and can manufacture complex-shaped and size-accurate lost foams of cylinder blocks.

[0033] The carbon content of the copolymer is 62%, the density parameter of the copolymer is 21-22 g / L, and the carbon content of the EPS is as high as 98%, so that the residual carbon slag after pouring can be greatly reduced by using the copolymer as the white mold material. By using the bottom pouring mode, the molten iron fills the mold from bottom to top, the foaming vaporization process is stable, the exhaust is smooth, and the pouring process has no back spray phenomenon.

[0034] The working principle of the utility model is:

[0035] When the air cylinder body lost foam 6 needs to be poured, the air cylinder body lost foam 6 is placed on the pouring frame 1, and the inner runner 4 on the pouring frame 1 corresponds to the pouring position, then the plurality of first slag collecting risers 2 and the plurality of second slag collecting risers 3 are communicated with the corresponding positions on the air cylinder body lost foam 6, then the molten iron is poured from the pouring cup 5, the molten iron reaches the inner runner 4 in turn through the pouring cup 5, the straight runner 7 and the cross runner 8, and the inner runner 4 pours the molten iron from bottom to top to the bottom of the air cylinder body lost foam 6.

[0036] The above is only the preferred embodiment of the utility model, and it should be pointed out that for those skilled in the art, without departing from the structure of the utility model, a number of modifications and improvements can be made, which will not affect the effect and practicality of the utility model.

Claims

1. A casting apparatus for a lost foam die casting engine block, characterized by, It includes pouring frame (1), a plurality of first slag runner (2) and a plurality of second slag runner (3), the lower of the pouring frame (1) is detachably mounted with a plurality of inner runner (4), the upper of the pouring frame (1) is provided with a sprue cup (5), the inner runner (4) and the sprue cup (5) are communicated, the pouring frame (1) is placed on the cylinder body lost foam (6), and a plurality of the inner runner (4) and the plurality of injection ports in the bottom of the cylinder body lost foam (6) are communicated one by one, the both sides of the upper of the cylinder body lost foam (6) are provided with a plurality of first exhaust ports communicated with the first slag runner (2), the both sides of the upper of the cylinder body lost foam (6) are provided with a plurality of second exhaust ports communicated with the second slag runner (3).

2. A lost foam mold casting apparatus for a cylinder block as defined in claim 1 wherein, The pouring frame (1) includes a straight runner (7), a cross runner (8), a first pouring pipe (9) and a second pouring pipe (10), the top of the cross runner (8) is fixedly connected with one end of the straight runner (7), the other end of the straight runner (7) is fixedly connected with the sprue cup (5), the both ends of the bottom of the cross runner (8) are connected with the first pouring pipe (9), a plurality of inner runners (4) are installed on the first pouring pipe (9), the center of the bottom of the cross runner (8) is fixedly connected with the second pouring pipe (10), the inner runner (4) is installed on the second pouring pipe (10), and the sprue cup (5), the straight runner (7), the cross runner (8), the first pouring pipe (9), the second pouring pipe (10) and the inner runner (4) are communicated in sequence.

3. A lost foam mold casting apparatus for a cylinder block as defined in claim 2 wherein, The bottom of the inner runner (4) is provided with external threads, the first pouring pipe (9) and the second pouring pipe (10) are both provided with threaded holes corresponding to the external threads, and the inner runner (4) is threadedly installed on the first pouring pipe (9) and the second pouring pipe (10).

4. The apparatus according to claim 1, wherein The cross-sectional area of one end of the first slag runner (2) communicated with the cylinder body lost foam (6) is smaller than the cross-sectional area of the top opening of the first slag runner (2).

5. A lost foam mold casting apparatus for a cylinder block as defined in claim 1 wherein, The first slag runner (2) is in the shape of an I-beam.

6. A lost foam mold casting apparatus for a cylinder block as defined in claim 1 wherein, The second slag runner (3) is provided with an inverted trapezoidal section structure (11) and a square section structure (12), the square section structure (12) is fixedly installed on the top of the inverted trapezoidal section structure (11), and the inverted trapezoidal section structure (11), the square section structure (12) and the second exhaust port are communicated.

7. A lost foam mold casting apparatus for a cylinder block as defined in claim 1 wherein, The inner runner (4) is a polygonal column with a small upper part and a large lower part.

8. A lost foam mold casting apparatus for a cylinder block as defined in claim 1 wherein, The sprue cup (5) is a resin sand sprue cup.

9. The apparatus according to claim 1, wherein The inner diameter of the cup mouth of the sprue cup (5) is 120mm-140mm, and the diameter of the cup bottom of the sprue cup (5) is 30-50mm.

Images