Straight pouring gate integration device of large casting dispersed bottom pouring system

Abstract

The utility model belongs to the field of lost foam casting, and particularly relates to a sprue integrated device of a large casting dispersed bottom pouring system, which comprises a large foam strip, a small foam strip, a paper pouring tube, a ceramic tube, a casting mold and resin sand. According to the scattered bottom pouring system for the large castings, the pouring system combining the advantages of a foam pouring gate, a ceramic pouring gate pipe and a paper pouring gate pipe is formed through foams, the paper pouring gate pipe and the ceramic pouring gate pipe which are different in shape, the advantages of the foam pouring gate, the ceramic pouring gate pipe and the paper pouring gate pipe are all excellent, molding operation of production workers is facilitated, and the production efficiency is improved. And casting defects generated when the sprue is damaged are avoided, and the casting quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of lost foam casting, and particularly relates to a paper runner pipe used as a pouring system. BACKGROUND

[0002] The paper runner pipe uses waste books, paper boxes and newspapers as raw materials, realizes recycling of resources and reduction of environmental pollution, and is supported by the national environmental protection policy due to the reduction of waste; meanwhile, the paper runner pipe is used to simplify the whole production process and reduce casting defects; when producing lost foam nodular cast iron, the paper runner pipe is used to significantly reduce defects such as carbon deposition, wrinkling, sand inclusion and inclusion; unlike the ceramic runner pipe, the paper runner pipe has obvious advantages in production efficiency, labor intensity and working environment, but the high-temperature strength of the paper runner pipe is limited, the straight runner must withstand the scouring of high-temperature molten iron for a long time, the sand mold must completely wrap the outer periphery of the paper runner to resist the impact of the metal liquid, and the large casting has large volume, heavy weight and much molten iron, so the cross-sectional area of the corresponding pouring system is increased, the paper straight runner and the straight runner gap resin sand are difficult to compact, and the paper tube exposed at the sprue cup is easy to oxidize and block the filter box.

[0003] Therefore, there is an urgent need in the prior art to solve the above problems. SUMMARY

[0004] The utility model solves the technical problem that an equipment aiming at the problems in the background art is provided.

[0005] A large casting dispersed bottom pouring system straight runner integrated device is characterized by comprising a large foam strip, a small foam strip, a paper pouring pipe and a ceramic pipe.

[0006] The large foam strip is provided with the small foam strip and the ceramic pipe on one side, and is provided with the paper pouring pipe on the other side; the number of the small foam strip is two, and the small foam strip is arranged on two opposite edges of the same side of the large foam strip.

[0007] The number of the paper pouring pipe is more than one, and the paper pouring pipe is regularly arranged on the large foam strip.

[0008] The number of the ceramic pipe is more than one, and the ceramic pipe is regularly arranged on the large foam strip.

[0009] The paper pouring pipe is provided with a foam cylinder with a height of 15 mm.

[0010] The large foam strip is provided with an auxiliary foam strip at the bottom.

[0011] The large foam strip is 600 mm long, 300 mm wide and 120 mm high.

[0012] The small foam long strip is 300 mm long, 50 mm wide, and 50 mm high.

[0013] The paper pouring tube end is bonded with a base adhesive tape.

[0014] One end of the foam cylinder is bonded to the large foam long strip.

[0015] The diameter of the foam cylinder is 72 mm.

[0016] The size of the auxiliary foam strip is 50 mm*50 mm*600 mm.

[0017] Through the above design, the application provides a large casting dispersed bottom pouring system, which combines the advantages of foam pouring, ceramic pouring tube and paper pouring tube by using different shapes of foam and paper pouring tube and ceramic pouring tube, and the advantages of different shapes are taken to facilitate the modeling operation of production workers, avoid casting defects caused by the damage of the straight pouring channel, and improve the casting quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in connection with the drawings and specific embodiments:

[0019] Figure 1 It is a structural schematic view of the utility model;

[0020] Figure 2 It is a working state plan view of the utility model;

[0021] In the drawing: 1-large foam long strip, 2-small foam long strip, 3-paper pouring tube, 4-ceramic tube, 5-mold, 6-resin sand. SPECIFIC EMBODIMENT

[0022] The application will be further explained in connection with the drawings:

[0023] A large casting dispersed bottom pouring system straight pouring channel integrated device is characterized by comprising a large foam long strip 1, a small foam long strip 2, a paper pouring tube 3 and a ceramic tube 4.

[0024] The large foam long strip 1 is provided with the small foam long strip 2 and the ceramic tube 4 on one side, and is provided with the paper pouring tube 3 on the other side; the number of the small foam long strip 2 is two, and the small foam long strips 2 are arranged on the two opposite edges of the same side of the large foam long strip 1.

[0025] The number of the paper pouring tube 3 is more than one, and the paper pouring tube 3 is regularly arranged on the large foam long strip 1.

[0026] The number of the ceramic tube 4 is more than one, and the ceramic tube 4 is regularly arranged on the large foam long strip 1.

[0027] The paper pouring pipe 3 is provided with a foam cylinder with a height of 15 mm;

[0028] The large foam strip 1 is provided with an auxiliary foam strip at the bottom.

[0029] The large foam strip 1 is 600 mm long, 300 mm wide and 120 mm high.

[0030] The small foam strip 2 is 300 mm long, 50 mm wide and 50 mm high.

[0031] The paper pouring pipe 3 is provided with a base adhesive tape at the end.

[0032] One end of the foam cylinder is connected to the large foam strip 1.

[0033] The diameter of the foam cylinder is 72 mm.

[0034] The size of the auxiliary foam strip is 50 mm*50 mm*600 mm.

[0035] In actual operation:

[0036] In the first step, the foam plate is cut into a large foam strip 1 with a length of 600 mm, a width of 300 mm and a height of 120 mm by using a foam cutting machine or a fine woodworking band saw.

[0037] In the second step, the small foam strip 2 is adhered to the two ends of the large foam strip 1 (the 300 mm edges are aligned) by using an adhesive such as AB glue, and a cloth-based adhesive tape is pasted on the surface, with an area greater than the cross-sectional area of all the ceramic pipes 4, and the position of the adhesive tape is in the middle.

[0038] In the third step, the large foam strip 1 is turned over, and the paper pouring pipe 3 with a diameter of 70 mm is cut into a ring with a height of 60 mm by using a paper saw, and a foam cylinder with a diameter of 72 mm and a height of 15 mm is made, which is tightly inserted into the paper pouring pipe 3, and the foam cylinder and the large foam strip 1 are adhered by brushing AB adhesive, and the paper pouring pipe 3 is pressed to make the paper pouring pipe 3 and the large foam strip 1 adhere without gaps, one end of the paper pouring pipe 3 is adhered to the large foam strip 1, and the other end is pasted with a cloth-based adhesive tape. Repeat the above steps, and paste dozens of paper pouring pipes 3 on the surface, which are evenly distributed and have a certain distance.

[0039] The model made by the above three steps is placed in a drying room for drying, and after 8 hours, the model is taken out, the paint is adjusted to a certain degree, and the model is sprayed or sprayed, and after the paint is applied, it is placed in a drying room for 12 hours, taken out, sprayed or sprayed again, and repeated three times.

[0040] When the profile modeling is buried, the big foam strip 1 is pasted on one side of the paper pouring pipe 3 with the upper side up, the cloth adhesive tape attached to the upper side is torn off, the excess coating is cleaned, the auxiliary foam strip of 50mm*50mm*600mm is placed at the part of the big foam strip 1 bottom without the small foam strip 2 gap, the resin sand is prevented from flowing into the gap, the length of the paper pouring pipe 3 straight gate connected with φ70mm is estimated according to the height of the sand box, the excess part is removed by the paper saw, and the shielding object is placed to prevent the resin sand from entering during sanding.

[0041] After the model profile modeling is completed, the model is turned over, and the bottom surface is modeled: the foam strip added during the profile modeling on both sides is removed, the cloth adhesive tape is torn off, the ceramic pouring pipe combination with different diameters is selected according to the cross-sectional area of the paper pouring pipe 3, the calculated ceramic pipe is pasted on the foam strip with the adhesive tape removed, the ceramic pouring pipe 4 is cut to the appropriate height by the profile cutter, the static pressure head height is ensured, the sanding is continued until the resin sand is slightly lower than the ceramic pouring pipe 4, and the modeling is completed.

[0042] The big foam strip 1, the small foam strip 2 and the auxiliary foam strip used in the application are all selected from the foam for expendable pattern casting, which is EPS and STMMA;

[0043] The size of the big foam strip 1 is adjusted according to the size of the ceramic pipe 4 and the paper pouring pipe 3, and the length and width of the big foam strip 1 are both greater than the sum of the diameters of the ceramic pipe 4 and the paper pouring pipe 3, and at the same time, the size of the big foam strip 1 should meet the size of the gate cup. The thickness of the big foam strip 1 should meet the condition that the molten iron does not wash sand during pouring. When the above conditions are met, the foam volume is as small as possible;

[0044] The design is suitable for the casting with good sand mold air permeability;

[0045] The whole straight gate foam integrated device is tightly bonded without gap, and the use of large amount of binder is as little as possible;

[0046] The straight gate has high molten iron temperature and long flushing time, and under the premise of ensuring no sand washing, the big foam strip 1 can be coated with high refractoriness coating;

[0047] The cross-sectional area of the ceramic pouring pipe 4 needs to be greater than or equal to the cross-sectional area of the paper straight gate pipe 3;

[0048] The small foam strip 2 is arranged on the big foam strip 1, which has a part of slag collecting function;

[0049] The sprue integrated device makes full use of the advantages of foam, ceramic and paper pouring pipe, reasonably combines, fully plays the advantages of paper pouring pipe such as fast filling, obvious reduction of casting defects, flexible foam, convenient operation, high strength of ceramic pouring pipe 4, designs the sprue of the pouring system, sets the ceramic pouring pipe 4 at the gate cup, the gate cup base, the upper box bottom net and the box net adjacent to the upper box bottom net, then sets the large foam strip 1 (with small foam strip 2) downwards, and then sets the paper pouring pipe 3 downwards to form the sprue of the entire pouring system.

Claims

1. A large casting dispersed bottom gating system sprue integrated device, characterized by: It comprises a big foam strip (1), a small foam strip (2), a paper pouring pipe (3) and a ceramic pipe (4). The big foam strip (1) is provided with the small foam strip (2) and the ceramic pipe (4) on one side, and is provided with the paper pouring pipe (3) on the other side. The number of the paper pouring pipe (3) is more than one, and the paper pouring pipe (3) is regularly arranged on the big foam strip (1). The number of the ceramic pipe (4) is more than one, and the ceramic pipe (4) is regularly arranged on the big foam strip (1). The paper pouring pipe (3) is provided with a foam cylinder with a height of 15mm. The big foam strip (1) is provided with an auxiliary foam strip at the bottom. The big foam strip (1) is 600mm long, 300mm wide and 120mm high.

2. A sprue integrator for a large casting dispersed bottom gating system according to claim 1, characterized in that: The small foam strip (2) is 300mm long, 50mm wide and 50mm high.

3. A sprue integrator for a large casting dispersed bottom gating system according to claim 1, characterized in that: The end of the paper pouring pipe (3) is provided with a base adhesive tape.

4. The integrated apparatus of claim 1, wherein: One end of the foam cylinder is adhesively connected with the big foam strip (1).

5. A sprue integrator for a distribution system of a large casting according to claim 1, characterized in that: The diameter of the foam cylinder is 72mm.

6. A sprue integrator for a distribution system of a large casting according to claim 1, characterized in that: The size of the auxiliary foam strip is 50mm*50mm*600mm.

7. A sprue integrator for a distribution system of a large casting according to claim 1, characterized in that: ​

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