A magnesium alloy pouring device for low pressure casting

Abstract

The utility model relates to pouring device technical field, and disclose a kind of magnesium alloy pouring device of low pressure casting, the magnesium alloy pouring device of low pressure casting, including main part, the bottom fixed mounting of main part has base, the inner wall of main part is provided with pouring pipe, the inner wall of main part is fixedly installed with mould, the inner wall of main part is provided with protection mechanism, the magnesium alloy pouring device of low pressure casting, to prevent dust from entering mould and influence the compactness of pouring part, by motor output end reverses and drives screw rod reverse, while screw rod reverses, threaded slider will drive pouring pipe to move right, while pouring pipe moves right, the end of rectangular rod will move inwards and pull square plate to the inner wall of mould and slide to shield mould, prevent dust from entering mould inside and cause dust to mix in magnesium alloy melt next time, become inclusions when solidification, change alloy internal organization structure, reduce the compactness of casting.

Description

Technical Field

[0001] This utility model relates to the field of casting device technology, specifically a magnesium alloy casting device for low-pressure casting. Background Technology

[0002] Magnesium alloy casting equipment is a specialized device designed specifically for casting molten magnesium alloys. It features a precise flow guide design, ensuring the smooth and uniform delivery of the molten metal to the mold cavity. The control system acts as the "brain" of the device, accurately controlling the temperature and flow rate at each stage. It also incorporates safety warning mechanisms such as anti-oxidation and anti-leakage measures, comprehensively guaranteeing the efficiency, stability, and safety of the magnesium alloy casting process, allowing for the successful molding of precision magnesium alloy parts or profiles.

[0003] The existing casting equipment still has some drawbacks in practical applications. First, when the existing casting equipment is not in use, dust is absorbed inside the mold. Some of the dust mixes into the magnesium alloy melt and becomes inclusions when it solidifies, which changes the internal structure of the alloy, reduces the density of the casting, and greatly reduces the mechanical properties, such as weakening the strength and toughness of the casting, making it more prone to cracking in subsequent use. Utility Model Content

[0004] The purpose of this invention is to provide a low-pressure casting magnesium alloy pouring device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-pressure casting magnesium alloy pouring device, comprising a main body, a base fixedly installed at the bottom of the main body, a pouring pipe provided on the inner wall of the main body, a mold fixedly installed on the inner wall of the main body, a protective mechanism provided on the inner wall of the main body, and a sealing mechanism provided on the inner wall of the mold. The protective mechanism includes: a motor fixedly installed on the outer wall of the main body, and a threaded rod fixedly installed at the output end of the motor.

[0006] Preferably, a threaded slider is slidably installed on the inner wall of the main body, a rotating rod is rotatably installed on the outer wall of the casting pipe, a rectangular rod is fixedly installed on the outer wall of the rotating rod, and a push rod is fixedly installed at the end of the rotating rod.

[0007] Preferably, a baffle is slidably installed on the inner wall of the casting pipe, and a groove is formed on the inner wall of the baffle. A square plate is slidably installed on the inner wall of the mold.

[0008] Preferably, the sealing mechanism includes: a sealing strip that slides on the inner wall of the mold, a spring that is fixedly installed on the inner wall of the mold, an inclined block that is fixedly installed on the inner wall of the sealing strip, and an extrusion block that is slidably installed on the inner wall of the mold.

[0009] Preferably, the inner wall of the threaded slider is threadedly connected to the outer wall of the threaded rod, the casting pipe is fixedly installed on the outer wall of the threaded slider, one end of the rectangular rod is fixedly installed on the outer wall of the rotating rod, and the other end of the rectangular rod is hinged to the upper surface of the square plate. The outer wall of the push rod end is in contact with the inner wall of the slide groove. By setting the rectangular rod, the square plate can be displaced.

[0010] Preferably, one end of the spring is fixedly installed on the inner wall of the mold, and the other end of the spring is fixedly installed on the inner wall of the sealing strip. The end of the extrusion block is beveled, and the sealing strip can be reset by setting the spring.

[0011] Compared with the prior art, this utility model provides a low-pressure casting magnesium alloy pouring device, which has the following beneficial effects:

[0012] 1. In order to prevent dust from entering the mold and affecting the density of the cast parts, the low-pressure casting magnesium alloy pouring device reverses the motor output end and drives the threaded rod to reverse. At the same time as the threaded rod reverses, the threaded slider drives the pouring pipe to move to the right. As the pouring pipe moves to the right, the end of the rectangular rod moves inward and pulls the square plate to slide against the inner wall of the mold to block the mold and prevent dust from entering the mold and causing dust to mix into the magnesium alloy melt during the next pouring. During solidification, this dust will become an inclusion, change the internal structure of the alloy, and reduce the density of the casting.

[0013] 2. In this low-pressure casting magnesium alloy pouring device, to prevent moisture from entering the mold and affecting the strength of the casting, an extrusion block moves downwards on the inner wall of the mold to extrude a sloping block. When the sloping block is extruded, it pushes the sealing strip out of the inner wall of the mold and, together with a square plate, seals the mold to prevent moisture from entering. This prevents moisture from rapidly vaporizing upon contact with the high-temperature molten magnesium alloy during the next pour, forming water vapor. This water vapor cannot escape during the solidification process of the molten alloy and becomes trapped inside the casting, forming pores. This severely reduces the strength of the magnesium alloy casting and makes the product more prone to breakage during subsequent use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of part of the structure of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged schematic diagram of structure A;

[0017] Figure 4 This utility model Figure 2 An enlarged schematic diagram of the B structure.

[0018] In the diagram: 1. Main body; 2. Base; 3. Casting pipe; 4. Mold; 5. Protective mechanism; 501. Motor; 502. Threaded rod; 503. Threaded slider; 504. Rotating rod; 505. Rectangular rod; 506. Push rod; 507. Baffle; 508. Slide groove; 509. Square plate; 6. Sealing mechanism; 601. Sealing strip; 602. Spring; 603. Inclined block; 604. Extrusion block. Detailed Implementation

[0019] like Figures 1-4 As shown, this utility model provides a technical solution: a low-pressure casting magnesium alloy pouring device, including a main body 1, a base 2 fixedly installed at the bottom of the main body 1, a pouring pipe 3 provided on the inner wall of the main body 1, a mold 4 fixedly installed on the inner wall of the main body 1, a protective mechanism 5 provided on the inner wall of the main body 1, and a sealing mechanism 6 provided on the inner wall of the mold 4.

[0020] The aforementioned protective mechanism 5 includes: a motor 501, a threaded rod 502, a threaded slider 503, a rotating rod 504, a rectangular rod 505, a push rod 506, a baffle 507, a slide groove 508, and a square plate 509. The motor 501 is fixedly installed on the outer wall of the main body 1. The threaded rod 502 is fixedly installed on the output end of the motor 501. The threaded slider 503 is slidably installed on the inner wall of the main body 1. The inner wall of the threaded slider 503 is threadedly connected to the outer wall of the threaded rod 502. The casting pipe 3 is fixedly installed on the outer wall of the threaded slider 503. A rotating rod 504 is rotatably installed on the outer wall of the casting pipe 3. A rectangular rod 505 is fixedly installed on the outer wall of the rotating rod 504. One end of the rectangular rod 505 is fixedly installed on the outer wall of the rotating rod 504, and the other end of the rectangular rod 505 is hinged to the upper surface of the square plate 509. The rotating rod 504... A push rod 506 is fixedly installed at the end of mold 4. The outer wall of the end of the push rod 506 fits against the inner wall of the groove 508. A baffle 507 is slidably installed on the inner wall of the pouring pipe 3. A groove 508 is opened on the inner wall of the baffle 507. A square plate 509 is slidably installed on the inner wall of mold 4. By controlling the output end of motor 501 to reverse and drive threaded rod 502 to reverse, while threaded rod 502 reverses, threaded slider 503 will drive pouring pipe 3 to move to the right. While pouring pipe 3 moves to the right, the end of rectangular rod 505 will move inward and pull square plate 509 to slide against the inner wall of mold 4 to block mold 4 and prevent dust from entering the mold 4. This would cause dust to mix into the magnesium alloy melt during the next pouring, which would become inclusions during solidification, change the internal structure of the alloy, and reduce the density of the casting.

[0021] The sealing mechanism 6 includes: a sealing strip 601, a spring 602, an inclined block 603, and an extrusion block 604. The sealing strip 601 slides on the inner wall of the mold 4. The spring 602 is fixedly installed on the inner wall of the mold 4. One end of the spring 602 is fixedly installed on the inner wall of the mold 4, and the other end of the spring 602 is fixedly installed on the inner wall of the sealing strip 601. The inclined block 603 is fixedly installed on the inner wall of the mold 4. The extrusion block 604 is slidably installed on the inner wall of the mold 4. The extrusion block 604 moves downward on the inner wall of the mold 4 to extrude the inclined block 603. When the inclined block 603 is extruded, it pushes the sealing strip 601 out of the inner wall of the mold 4 and, together with the square plate 509, seals the mold 4 to prevent moisture from entering the interior of the mold 4. This would cause the moisture to vaporize rapidly when it encounters the high-temperature magnesium alloy melt during the next pouring, forming water vapor. These water vapors cannot escape during the solidification process of the molten metal and will be trapped inside the casting, forming pores. This severely reduces the strength of the magnesium alloy casting and makes the product more prone to breakage during subsequent use.

[0022] Working Principle: When not in use, the output of motor 501 is reversed, causing threaded rod 502 to reverse as well. Simultaneously, threaded slider 503 moves the pouring pipe 3 to the right. While the pouring pipe 3 moves to the right, the end of rectangular rod 505 moves inward, pulling square plate 509 towards the inner wall of mold 4 to shield it, preventing dust from entering the mold and mixing into the molten magnesium alloy during subsequent pours. This dust would then solidify as inclusions, altering the internal structure of the alloy and reducing the density of the casting. Simultaneously, the inward movement of rectangular rod 505 drives rotating rod 504. The rotation of rotating rod 504 causes push rod 506 to press against groove 508, causing baffle 507 to slide towards the inner wall of pouring pipe 3 and close it, preventing dust from entering the pouring pipe 3 and mixing into the magnesium solution, further improving the protective effect. As the square plate 509 slides into the mold 4, it applies pressure to the extrusion block 604, causing the extrusion block 604 to move downwards on the inner wall of the mold 4 and extrude the inclined block 603. When the inclined block 603 is extruded, it pushes the sealing strip 601 out of the inner wall of the mold 4 and works with the square plate 509 to seal the mold 4, preventing moisture from entering the mold 4. This would cause the moisture to vaporize rapidly when it encounters the high-temperature magnesium alloy melt during the next pour, forming water vapor. This water vapor cannot escape during the solidification process of the melt and will be trapped inside the casting, forming pores. This would severely reduce the strength of the magnesium alloy casting and make the product more prone to breakage during subsequent use. When the square plate 509 does not apply pressure to the extrusion block 604, the spring 602 will pull the sealing strip 601 to slide inwards and reset on the inner wall of the mold 4, and cause the inclined block 603 to lift the extrusion block 604 and reset it.

[0023] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A low-pressure casting magnesium alloy pouring device, comprising a main body (1), characterized in that: A base (2) is fixedly installed at the bottom of the main body (1), a pouring pipe (3) is provided on the inner wall of the main body (1), a mold (4) is fixedly installed on the inner wall of the main body (1), a protective mechanism (5) is provided on the inner wall of the main body (1), and a sealing mechanism (6) is provided on the inner wall of the mold (4). The protective mechanism (5) includes: Motor (501), said motor (501) is fixedly installed on the outer wall of the main body (1); A threaded rod (502) is fixedly installed at the output end of a motor (501).

2. The magnesium alloy casting apparatus for low-pressure casting according to claim 1, characterized in that: A threaded slider (503) is slidably installed on the inner wall of the main body (1), a rotating rod (504) is rotatably installed on the outer wall of the casting pipe (3), a rectangular rod (505) is fixedly installed on the outer wall of the rotating rod (504), and a push rod (506) is fixedly installed at the end of the rotating rod (504).

3. The magnesium alloy casting apparatus for low-pressure casting according to claim 2, characterized in that: The inner wall of the casting pipe (3) is slidably fitted with a baffle (507), the inner wall of the baffle (507) is provided with a groove (508), and the inner wall of the mold (4) is slidably fitted with a square plate (509).

4. The magnesium alloy casting apparatus for low-pressure casting according to claim 3, characterized in that: The sealing mechanism (6) includes: a sealing strip (601) which slides on the inner wall of the mold (4), a spring (602) which is fixedly installed on the inner wall of the mold (4), a slope block (603) which is fixedly installed on the inner wall of the sealing strip (601), and an extrusion block (604) which is slidably installed on the inner wall of the mold (4).

5. The magnesium alloy casting apparatus for low-pressure casting according to claim 4, characterized in that: The inner wall of the threaded slider (503) is threadedly connected to the outer wall of the threaded rod (502). The casting pipe (3) is fixedly installed on the outer wall of the threaded slider (503). One end of the rectangular rod (505) is fixedly installed on the outer wall of the rotating rod (504), and the other end of the rectangular rod (505) is hinged to the upper surface of the square plate (509). The outer wall of the end of the push rod (506) is in contact with the inner wall of the groove (508).

6. The magnesium alloy casting apparatus for low-pressure casting according to claim 5, characterized in that: One end of the spring (602) is fixedly installed on the inner wall of the mold (4), and the other end of the spring (602) is fixedly installed on the inner wall of the sealing strip (601). The end of the extrusion block (604) is inclined.

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