Bottom pouring type pouring device for aluminum alloy sand mold casting

Abstract

The utility model relates to the technical field of aluminum alloy sand mold casting, and discloses an aluminum alloy sand mold casting bottom pouring type pouring device which comprises a transverse pouring gate, a straight pouring gate is fixedly assembled at the top of the transverse pouring gate, an arc-shaped frame is fixedly assembled at the top of the straight pouring gate, and a conveying pipe is fixedly assembled at the top of the arc-shaped frame. An auxiliary pipe is fixedly assembled on the top of the conveying pipe. Through cooperative use of an auxiliary pipe and arc-shaped frames, liquid aluminum alloy passes through a liquid inlet pipe to enter the inner wall of the auxiliary pipe, is supplied to the interiors of two conveying pipes through the auxiliary pipe, passes through the two conveying pipes to the interiors of two arc-shaped frames, and is supplied to the interiors of four sprues through the two arc-shaped frames; and therefore, the liquid aluminum alloy is stably supplied into the base through the six ingates by utilizing the transverse pouring channel, so that the liquid aluminum alloy is stably and synchronously poured, and the situation that the pouring result is affected due to the fact that the internal temperature is not uniform is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy sand casting, in particular to a bottom pouring pouring device for aluminum alloy sand casting. Background Art

[0002] Aluminum alloy sand casting is a casting method in which liquid aluminum alloy is poured into a mold cavity that matches the shape and size of the part. After it cools and solidifies, a blank or part is obtained. In order to assist in the stable casting of aluminum alloy sand molds, a bottom pouring device for aluminum alloy sand casting is required.

[0003] During the use of the traditional bottom pouring device for aluminum alloy sand casting, the molten metal flows from the bottom of the casting into the mold cavity. This method has the advantages of smooth filling, small impact on the sand core, and less oxidation of the molten metal. Therefore, it is suitable for the casting of large and medium-sized castings. In the bottom pouring system, the inner runner is in a submerged state, the flow rate of the molten metal is stable, not easily oxidized, and will not splash. This helps to suppress the gas emission of the vaporization mold. At the same time, the rising direction of the molten metal is consistent with the direction of foam decomposition and vaporization, which is conducive to scum. However, during the use of the traditional bottom pouring device for aluminum alloy sand casting, there is only one liquid inlet. As a result, when the liquid aluminum alloy is poured in, it is easy to cool down due to its high thermal conductivity. In turn, it is easy to cause the liquid aluminum to partially cool when it moves to the desired position, thereby affecting the stable pouring of the liquid aluminum alloy. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a bottom pouring device for aluminum alloy sand casting to solve the problems raised by the above background technology.

[0005] The utility model provides the following technical solution: a bottom pouring pouring device for aluminum alloy sand casting, comprising a horizontal runner, a straight runner fixedly assembled on the top of the horizontal runner, an arc-shaped frame fixedly assembled on the top of the arc-shaped frame, a transmission pipe fixedly assembled on the top of the transmission pipe, an auxiliary pipe fixedly assembled on the top of the auxiliary pipe, a liquid inlet pipe fixedly assembled on the inner wall of the horizontal runner, an end of the ingrowth away from the horizontal runner fixedly assembled with a base, and a riser fixedly assembled on the top of the base.

[0006] As a preferred technical solution of the present invention, a fixing plate is fixedly sleeved on the inner wall of the riser, and a baffle 1 is rotatably connected to the inner wall of the fixing plate.

[0007] As a preferred technical solution of the present invention, a slide rod is slidably sleeved on the inner wall of the riser, a slide plate is fixedly mounted on the bottom of the slide rod, and the outer edge of the slide plate is slidably sleeved on the inner wall of the riser.

[0008] As a preferred technical solution of the present invention, the inner wall of the slide plate is rotatably connected to a second baffle, the top of the riser is provided with an exhaust port, and the top of the slide rod is fixedly equipped with an arc rod.

[0009] As an optimal technical solution of the present invention, the number of the straight runners is four, and the bottoms of the four straight runners are fixedly assembled with the top of the cross runner, the four straight runners are grouped in pairs, the number of the arc frames is two, and the two arc frames are respectively connected to the inner walls of the tops of the two groups of straight runners, the number of the transmission pipes is two, and the bottoms of the two transmission pipes are respectively fixedly assembled with the tops of the two arc frames, and the inner walls of the tops of the two transmission pipes are both connected to the inner wall of the auxiliary pipe.

[0010] As a preferred technical solution of the present invention, the number of the risers is four, and the bottoms of the four risers are all fixedly assembled with the top of the base, and the internal connection structures of the four risers are completely consistent.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The bottom pouring pouring device for aluminum alloy sand casting uses an auxiliary pipe and an arc frame in combination. Liquid aluminum alloy passes through the liquid inlet pipe to the inner wall of the auxiliary pipe, and is then supplied to the interior of two transmission pipes through the auxiliary pipe, and then to the interior of two arc frames through the two transmission pipes. The liquid aluminum alloy is then supplied to the interior of four straight runners through the two straight runners, and then to the interior of the cross runner through the six inner runners through the cross runner, thereby stably ensuring the stable synchronous pouring of the liquid aluminum alloy and avoiding uneven internal temperature that affects the pouring results.

[0013] 2. The bottom pouring pouring device for aluminum alloy sand casting cooperates with the fixed plate and the slide plate. When the riser is used to assist in pouring, the internal gas pushes the baffle plate on the inner wall of the fixed plate to rotate, and then is further intercepted by the baffle plate inside the slide plate, thereby preventing excessive dissipation of gas. By moving the arc rod downward, the arc rod drives the slide plate downward through the slide rod until the bottom of the slide plate overlaps the bottom of the fixed plate, and the bottom of the slide plate is used to assist in limiting the baffle plate, thereby preventing gas leakage and ensuring stable pouring operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-section structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the side sectional structure of the arc-shaped frame of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the riser of the utility model;

[0018] Figure 5 For this utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0019] In the figure: 1. Horizontal runner; 2. Vertical runner; 3. Arc frame; 4. Transfer pipe; 5. Auxiliary pipe; 6. Liquid inlet pipe; 7. Ingate; 8. Base; 9. Riser; 10. Fixed plate; 11. Baffle 1; 12. Slide plate; 13. Baffle 2; 14. Slide rod; 15. Exhaust port; 16. Arc rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 5 A bottom pouring pouring device for aluminum alloy sand casting comprises a runner 1, a sprue 2 is fixedly mounted on the top of the runner 1, an arc frame 3 is fixedly mounted on the top of the arc frame 3, a transmission pipe 4 is fixedly mounted on the top of the transmission pipe 4, an auxiliary pipe 5 is fixedly mounted on the top of the auxiliary pipe 5, a liquid inlet pipe 6 is fixedly mounted on the top of the auxiliary pipe 5, an entgate 7 is fixedly mounted on the inner wall of the runner 1, a base 8 is fixedly mounted on the end of the entgate 7 away from the runner 1, a riser 9 is fixedly mounted on the top of the base 8, and the transmission pipe 4 is used in conjunction with the auxiliary pipe 5, and the transmission pipe 4 is used to assist in supplying liquid aluminum alloy to the inside of the arc frame 3, thereby utilizing the arc frame 3 to supply liquid aluminum alloy to the inside of the runner 1 through the sprue 2.

[0022] In a preferred embodiment, the inner wall of the riser 9 is fixedly sleeved with a fixed plate 10, and the inner wall of the fixed plate 10 is rotatably connected with a baffle 11. By cooperating with the fixed plate 10 and the baffle 11, the internal gas during pouring is used to push the baffle 11 to rotate in the inner wall of the fixed plate 10, thereby assisting the gas to be discharged, thereby avoiding gas accumulation and causing bubbles to form inside the finished product.

[0023] In a preferred embodiment, the inner wall of the riser 9 is slidably sleeved with a slide rod 14, and the bottom of the slide rod 14 is fixedly equipped with a slide plate 12, and the outer edge of the slide plate 12 is slidably sleeved with the inner wall of the riser 9. By cooperating with the slide rod 14 and the slide plate 12, the slide rod 14 is used to drive the slide plate 12 to move, and then the bottom of the slide plate 12 is overlapped with the top of the fixed plate 10, so that the bottom of the slide plate 12 is used to assist in blocking the baffle 11 to prevent gas discharge.

[0024] In a preferred embodiment, the inner wall of the slide plate 12 is rotatably connected to a baffle plate 2 13, an exhaust port 15 is provided at the top of the riser 9, and an arc-shaped rod 16 is fixedly assembled at the top of the slide rod 14. By adding the baffle plate 2 13 and the exhaust port 15, the baffle plate 2 13 cooperates with the baffle plate 11 to block the gas inside the riser 9. When the gas at the bottom of the riser 9 pushes the baffle plate 11 to rotate inside the fixed plate 10, the gas moves upward and pushes the baffle plate 2 13 to rotate in the inner wall of the slide plate 12, thereby avoiding a large amount of gas leakage, which causes the liquid aluminum alloy to cool down too quickly and affects the stable generation of aluminum alloy casting.

[0025] In a preferred embodiment, the number of straight runners 2 is four, and the bottoms of the four straight runners 2 are fixedly assembled with the top of the cross runner 1, the four straight runners 2 are grouped in pairs, the number of arc frames 3 is two, and the two arc frames 3 are respectively connected to the inner walls of the tops of the two groups of straight runners 2, the number of transmission tubes 4 is two, and the bottoms of the two transmission tubes 4 are respectively fixedly assembled with the tops of the two arc frames 3, and the inner walls of the tops of the two transmission tubes 4 are both connected to the inner wall of the auxiliary tube 5. By adding four straight runners 2, the four straight runners 2 are used to synchronously supply liquid aluminum alloy from all sides of the aluminum alloy casting device during the aluminum alloy casting process, avoiding excessive cooling of the aluminum alloy caused by unilateral casting, which makes it difficult to stably supply the liquid aluminum alloy. By adding two arc frames 3, the two arc frames 3 are used to synchronously supply liquid aluminum alloy to the inside of the two straight runners 2, thereby avoiding differences in the supply amount of liquid aluminum alloy, which affects the stable casting and molding of the aluminum alloy.

[0026] In a preferred embodiment, the number of risers 9 is four, and the bottoms of the four risers 9 are fixedly assembled with the top of the base 8. The internal connection structures of the four risers 9 are completely consistent. By adding four risers 9, the four risers 9 are used to assist in the stable exhaust of gas from the aluminum alloy sand mold during the casting process, avoiding the installation of a single riser 9, which causes the gas to be difficult to discharge and remain inside the casting equipment, thereby affecting the stable forming of the aluminum alloy.

[0027] Working principle: when the device is used, the liquid aluminum alloy is assisted in pouring by the liquid inlet pipe 6. The liquid aluminum alloy is supplied to the inside of the auxiliary pipe 5 through the liquid inlet pipe 6, and the auxiliary pipe 5 is used to supply the liquid aluminum alloy to the inside of the two transmission pipes 4. Then the two transmission pipes 4 supply the liquid aluminum alloy to the inside of the two arc frames 3, and then the arc frames 3 supply the liquid aluminum alloy to the inside of the four straight runners 2, so that a liquid aluminum alloy ring is formed inside the runner 1, and the runner 1 assists the liquid aluminum alloy to be supplied to the six inner runners 7. The base 8 moves the arc rod 16 downward at this time, so that the arc rod 16 drives the bottom of the slide plate 12 to overlap with the top of the fixed plate 10 through the slide rod 14, and then uses the bottom of the slide plate 12 to assist in blocking the baffle 11. During the aluminum alloy sand casting process, the arc rod 16 is moved upward, so that the arc rod 16 drives the baffle 2 13 to move upward, and then the internal gas pushes the baffle 11 and the baffle 2 13 to rotate during the auxiliary pouring, and uses the exhaust port 15 to assist the gas to be discharged, thereby helping to increase the aluminum alloy forming speed.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bottom pouring device for aluminum alloy sand casting, comprising a runner (1), characterized in that: The top of the horizontal runner (1) is fixedly equipped with a straight runner (2), the top of the straight runner (2) is fixedly equipped with an arc frame (3), the top of the arc frame (3) is fixedly equipped with a transmission pipe (4), the top of the transmission pipe (4) is fixedly equipped with an auxiliary pipe (5), the top of the auxiliary pipe (5) is fixedly equipped with a liquid inlet pipe (6), the inner wall of the horizontal runner (1) is fixedly equipped with an entrapment (7), the end of the entrapment (7) away from the horizontal runner (1) is fixedly equipped with a base (8), and the top of the base (8) is fixedly equipped with a riser (9).

2. The bottom pouring pouring device for aluminum alloy sand casting according to claim 1, characterized in that: A fixing plate (10) is fixedly sleeved on the inner wall of the riser (9), and a baffle (11) is rotatably connected to the inner wall of the fixing plate (10).

3. The bottom pouring device for aluminum alloy sand casting according to claim 1, characterized in that: The inner wall of the riser (9) is slidably sleeved with a slide rod (14), the bottom of the slide rod (14) is fixedly equipped with a slide plate (12), and the outer edge of the slide plate (12) is slidably sleeved with the inner wall of the riser (9).

4. The bottom pouring pouring device for aluminum alloy sand casting according to claim 3, characterized in that: The inner wall of the slide plate (12) is rotatably connected to a baffle plate 2 (13), the top of the riser (9) is provided with an exhaust port (15), and the top of the slide rod (14) is fixedly equipped with an arc rod (16).

5. The bottom pouring device for aluminum alloy sand casting according to claim 1, characterized in that: The number of the sprues (2) is four, and the bottoms of the four sprues (2) are fixedly assembled with the tops of the runners (1). The four sprues (2) are arranged in groups of two. The number of the arc frames (3) is two, and the two arc frames (3) are respectively connected to the inner walls of the tops of the two groups of sprues (2). The number of the transmission pipes (4) is two, and the bottoms of the two transmission pipes (4) are respectively fixedly assembled with the tops of the two arc frames (3). The inner walls of the tops of the two transmission pipes (4) are both connected to the inner wall of the auxiliary pipe (5).

6. The bottom pouring pouring device for aluminum alloy sand casting according to claim 1, characterized in that: There are four risers (9), and the bottoms of the four risers (9) are fixedly assembled with the top of the base (8), and the internal connection structures of the four risers (9) are completely consistent.

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