A mold and process for extruding magnesium alloy castings

Abstract

This invention discloses a mold and process for extruding magnesium alloy castings, relating to the field of casting technology. The invention includes an upper mold with a lower mold located below it. A liquid inlet pipe is fixedly connected to the upper side of the upper mold, and a liquid inlet is fixedly connected to the upper side of the liquid inlet pipe. An adjustment mechanism is provided at the upper end of the lower mold. The adjustment mechanism includes a partition plate, a first rotating rod, a blocking unit, a rotating unit, a transmission unit, a limiting unit, a connecting unit, a pin unit, and a positioning unit. The lower side of the upper mold is attached to the partition plate, and the lower side of the partition plate is attached to the lower mold. A first rotating rod is inserted inside the upper end of the upper mold, and a blocking unit is provided on the outer side of the middle end of the first rotating rod. By setting up the adjustment mechanism, a set of magnesium alloy molds can produce two different types of magnesium alloy castings, reducing the mold's footprint, lowering capital investment, and reducing labor costs, thereby effectively increasing production scale and reducing production costs.

Description

Technical Field

[0001] This invention relates to the field of casting technology, specifically to a mold and process for extruding magnesium alloy castings. Background Technology

[0002] Magnesium alloy parts are typically produced using die extrusion casting.

[0003] Traditional magnesium alloy casting molds require the magnesium alloy to be heated and melted in a furnace, then removed and left to stand for a period of time to obtain pure magnesium liquid. The pure magnesium liquid is then poured into the mold through a container for die casting. After forming, the mold is opened and the part is removed.

[0004] Traditional magnesium alloy molds typically only produce one type of part per mold. When different models of magnesium alloy parts need to be produced, different molds are required. Using multiple molds to produce different models of parts has several drawbacks: firstly, the large number of molds occupies a lot of space; secondly, a significant investment is required to purchase the molds; and thirdly, multiple sets of molds need to be operated by multiple people simultaneously, making the production of magnesium alloy castings quite inconvenient. To address these issues, the inventors have proposed a mold for extruding and casting magnesium alloy castings to solve these problems. Summary of the Invention

[0005] To address the inconvenience of magnesium alloy casting production, the present invention aims to provide an extrusion...

[0006] Molds and processes for die casting magnesium alloy castings.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: It includes an upper mold, a lower mold disposed below the upper mold, and a liquid inlet pipe fixedly connected to the upper side of the upper mold. A liquid inlet is fixedly connected to the upper side of the liquid inlet pipe. An adjustment mechanism is disposed at the upper end of the lower mold. The adjustment mechanism includes a partition plate, a first rotating rod, a blocking unit, a rotating unit, a transmission unit, a limiting unit, a connecting unit, a pin unit, and a positioning unit. The lower side of the upper mold is attached to the partition plate, and the lower side of the partition plate is attached to the lower mold. A first rotating rod is inserted inside the upper end of the upper mold.

[0008] A blocking unit is provided on the outer side of the middle end of the rod, and a rotating unit is provided on the front of the first rotating rod. The back of the first rotating rod is connected to the upper mold. A transmission unit is provided on the outer side of both ends of the first rotating rod. A limiting unit is provided at both ends of the transmission unit. A connecting unit is provided on both sides of the transmission unit. A pin unit is provided at the lower end of the connecting unit. A positioning unit is provided inside both ends of the partition.

[0009] Preferably, the blocking unit includes a turntable and a baffle, and the turntable is fixedly connected to the outer side of the middle end of the first rotating rod, and the baffle is fixedly connected to the outer side of the turntable. The rotating unit includes a second rotating rod and a screw plate, and the second rotating rod is fixedly connected to the front of the first rotating rod. The end of the second rotating rod away from the first rotating rod passes through the upper mold and is fixedly connected to the screw plate. The transmission unit includes gears and gear plates, and gears are fixedly connected to the outer sides of both ends of the first rotating rod. The gears mesh with the gear plates on the outer side of their lower ends, and two sets of gears and gear plates are arranged on both sides of the inner cavity of the upper mold.

[0010] Preferably, the limiting unit includes a limiting rod and a limiting block, and the limiting rod is inserted into the end of the toothed plate away from the gear. The side of the limiting rod away from the toothed plate is fixed to the upper mold, and the upper side of the end of the toothed plate away from the limiting rod is fixed to the limiting block. The connecting unit includes a connecting rod and a connecting plate, and the connecting rod is fixed to the side of the toothed plate away from the first rotating rod. The connecting rod is fixed to the side of the connecting plate away from the toothed plate. The pin unit includes a first insert rod and a fixing block, and the first insert rod is fixed to the lower outer side of the connecting plate. The outer side of the first insert rod away from the connecting plate is inserted into the fixing block, and the lower side of the fixing block is fixed to the partition plate.

[0011] Preferably, the positioning unit includes a second insert rod and a positioning rod, and the second insert rod is fixedly connected to the lower end of the partition plate. The outer side of the second insert rod is inserted into the positioning rod, and the lower side of the positioning rod is fixedly connected to the lower mold. Four sets of positioning units are arranged at both ends of the partition plate, and the four sets of positioning units are arranged symmetrically in pairs.

[0012] A process for extruding magnesium alloy castings includes the following steps:

[0013] The first step is to heat and melt the magnesium alloy in a furnace to remove hydrogen and impurities. The second step is to let the molten solution stand for a period of time to obtain refined magnesium liquid.

[0014] The third step involves adjusting the position of the blocking unit according to production needs. When casting is required using the mold cavity within the lower mold, the rotating unit is turned, causing it to drive the first rotating rod to rotate. The rotation of the first rotating rod then drives the rotating unit to rotate to the right, causing the blocking unit to rotate to the right. Simultaneously, the first rotating rod drives the transmission unit, which, with the assistance of the limiting unit, moves the connecting unit to the left. This leftward movement of the connecting unit causes the pin unit to engage. Subsequently, liquefied refined magnesium liquid is injected into the container through the inlet.

[0015] The liquid flows into the inlet pipe, then through the upper mold and partition plate into the cavity of the lower mold. After cooling and shaping, the upper mold is pulled up, causing the partition plate to move up via the pin unit. The part can then be removed. When casting is required in the cavity of the upper mold, the rotating unit is turned in the opposite direction, causing the first rotating rod to rotate the blocking unit to the left, and the transmission unit to move the moving unit to the right, causing the pin unit to separate. At this time, liquefied magnesium liquid is injected into the inlet through the container. The liquefied magnesium liquid is injected into the cavity of the upper mold through the inlet pipe. After cooling and shaping, the upper mold is pulled up, causing the upper mold to separate from the partition plate. The part can then be removed.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] By setting an adjustment mechanism, two different types of magnesium alloy castings can be produced using a single mold. During casting, the mechanism is first adjusted according to requirements. When casting is required in the cavity of the lower mold, the rotating unit is turned, causing it to drive the first rotating rod to rotate. The first rotating rod then drives the rotating unit to rotate to the right, blocking the rightward rotation of the blocking unit. Simultaneously, the first rotating rod drives the transmission unit, which, with the assistance of the limiting unit, moves the connecting unit to the left. This leftward movement of the connecting unit engages the pin unit. Then, liquefied refined magnesium liquid is injected into the inlet pipe through the inlet port, and flows through the upper mold and partition into the cavity of the lower mold. After cooling and shaping, the upper mold is pulled... The mold moves upward, causing the upper mold to move upward via the pin unit, which in turn moves the partition plate upward. The part can then be removed. When casting is required using the cavity inside the upper mold, the rotating unit is turned in the opposite direction, causing the first rotating rod to rotate the blocking unit to the left. The transmission unit then moves the moving unit to the right, causing the pin unit to separate. At this point, molten magnesium is injected into the inlet through a container. The molten magnesium is then injected into the cavity of the upper mold through the inlet pipe. After it cools and solidifies, the upper mold is pulled to separate it from the partition plate, and the part can then be removed. This allows a set of magnesium alloy molds to produce two different types of magnesium alloy castings, reducing the mold footprint, capital investment, and labor costs, thereby effectively increasing production scale and reducing production costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the embodiments.

[0019] The accompanying drawings used in the description of embodiments or prior art are briefly introduced below. It is obvious that...

[0020] The accompanying drawings described are merely some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0021] Figure 1 is a schematic diagram of the structure of the present invention.

[0022] Figure 2 is a front view of the structure of the present invention.

[0023] Figure 3 is a schematic diagram of the front cross-sectional structure of the gear in this invention.

[0024] Figure 4 is a schematic diagram of the adjustment mechanism of the present invention. Figure 5 is a schematic diagram of the structure at point A in Figure 2 of the present invention. Figure 6 is a schematic diagram of the structure at point B in Figure 4 of the present invention. Figure 7 is a schematic diagram of the structure at point C in Figure 3 of the present invention. Figure 8 is a schematic diagram of the structure at point D in Figure 2 of the present invention.

[0025] In the diagram: 1. Upper mold; 2. Lower mold; 3. Liquid inlet pipe; 4. Liquid inlet; 5. Baffle; 6. First rotating rod; 7. Turntable; 8. Baffle; 9. Second rotating rod; 10. Twisting disc; 11. Gear; 12. Gear plate; 13. Limiting rod; 14. Limiting block; 15. Connecting rod; 16. Connecting plate; 17. First insert rod; 18. Fixing block; 19. Second insert rod; 20. Positioning rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1: As shown in Figures 1-8, this invention provides a mold for extruding magnesium alloy castings, including an upper mold 1, a lower mold 2 disposed below the upper mold 1, and a liquid inlet pipe 3 fixedly connected to the upper side of the upper mold 1, with a liquid inlet 4 fixedly connected to the upper side of the liquid inlet pipe 3. An adjustment mechanism is disposed at the upper end of the lower mold 2, the adjustment mechanism including a partition plate 5, a first rotating rod 6, a blocking unit, a rotating unit, a transmission unit, a limiting unit, a connecting unit, a pin unit, and a positioning unit. The lower side of the upper mold 1 is attached to the partition plate 5, and the lower side of the partition plate 5 is attached to the lower mold 2. The first rotating rod 6 is inserted inside the upper end of the upper mold 1, and a blocking unit is disposed on the outer side of the middle end of the first rotating rod 6.

[0028] The first rotating rod 6 has a rotating unit on its front side, and its back side is rotated onto the upper mold 1.

[0029] Transmission units are installed on the outer sides of both ends of the rotating rod 6. Limiting units are installed at both ends of the transmission units, and the transmission units are...

[0030] A connecting unit is provided on the side, a pin unit is provided at the lower end of the connecting unit, and a positioning unit is provided inside both ends of the partition 5.

[0031] By adopting the above technical solution, two different types of magnesium alloy castings can be produced using a single mold. During casting, the mold is first adjusted according to requirements. When casting is required using the cavity within the lower mold 2, the rotating unit is turned, causing it to drive the first rotating rod 6 to rotate.

[0032] After the first rotating rod 6 rotates, it drives the rotating unit to rotate to the right, blocking the unit from rotating to the right. At the same time, the first rotating rod 6 drives the transmission unit to operate, causing the transmission unit to move the connecting unit to the left with the assistance of the limiting unit. The leftward movement of the connecting unit causes the pin unit to engage. Then, the liquefied refined magnesium liquid is injected into the inlet pipe 3 through the inlet port 4 through the container, and then flows into the mold cavity of the lower mold 2 through the upper mold 1 and the partition plate 5.

[0033] After it cools and shapes, pull the upper mold 1 upwards, causing the upper mold 1 to drive the partition 5 through the pin unit.

[0034] Move it upwards, then remove the part. If casting is required using the mold cavity within mold 1, twist in the reverse direction.

[0035] The rotating unit causes the first rotating rod 6 to rotate the blocking unit to the left, and the transmission unit drives the moving unit to move to the right.

[0036] This separates the latch unit. Then, liquefied magnesium solution is injected into inlet 4 through the container.

[0037] The liquid is injected into the cavity of the upper mold 1 through the inlet pipe 3. After it cools and solidifies, the upper mold 1 is pulled.

[0038] Separate the upper mold 1 from the partition 5, and then remove the part. By setting an adjustment mechanism, a set of magnesium alloy molds can produce two different types of magnesium alloy castings, reducing the mold footprint, reducing capital investment, reducing labor costs, thereby effectively increasing production scale and reducing production costs.

[0039] The blocking unit includes a turntable 7 and a baffle 8, with the turntable 7 fixedly connected to the outer side of the middle end of the first rotating rod 6, and the baffle 8 fixedly connected to the outer side of the turntable 7.

[0040] By adopting the above technical solution, the rotation of the first rotating rod 6 drives the turntable 7 and the baffle 8 to rotate, thus...

[0041] Different channels are closed off by baffle 8.

[0042] The rotating unit includes a second rotating rod 9 and a screw plate 10, and the first rotating rod 6 is fixedly connected to the second rotating rod 9 on the front. The end of the second rotating rod 9 away from the first rotating rod 6 passes through the upper mold 1 and is fixedly connected to the screw plate 10.

[0043] By adopting the above technical solution, turning the screw pan 10 causes the screw pan 10 to drive the second rotating rod 9 to rotate.

[0044] The second rotating rod 9 rotates, which drives the first rotating rod 6 to rotate, making it easier for the first rotating rod 6 to drive the blocking unit to rotate and adjust.

[0045] The transmission unit includes a gear 11 and a toothed plate 12. The gear 11 is fixedly connected to the outer sides of both ends of the first rotating rod 6. The toothed plate 12 meshes with the outer side of the lower end of the gear 11. The two sets of gears 11 and toothed plates 12 are arranged on both sides of the inner cavity of the upper mold 1.

[0046] By adopting the above technical solution, when the first rotating rod 6 rotates, it drives the gear 11 to rotate, causing the gear 11 to rotate.

[0047] By meshing with the gear plate 12, the gear plate 12 can be moved, and by setting the gear 11 and the gear plate 12, it is convenient to transmit power.

[0048] The limiting unit includes a limiting rod 13 and a limiting block 14, and the toothed plate 12 is located inside the end away from the gear 11.

[0049] A limiting rod 13 is inserted, and the side of the limiting rod 13 away from the toothed plate 12 is fixed to the upper mold 1, and the toothed plate 12

[0050] A limiting block 14 is fixedly connected to the upper side of the end away from the limiting rod 13.

[0051] By adopting the above technical solution, the toothed plate 12 moves outside the limiting rod 13 when it moves, thus...

[0052] The limit rod 13 and the limit block 14 facilitate the limiting of the movement of the toothed plate 12.

[0053] The connecting unit includes a connecting rod 15 and a connecting plate 16, with the connecting rod 15 fixed to the side of the toothed plate 12 away from the first rotating rod 6, and the connecting plate 16 fixed to the side of the connecting rod 15 away from the toothed plate 12.

[0054] By adopting the above technical solution, when the toothed plate 12 moves, it drives the connecting rod 15 and the connecting plate 16 to move.

[0055] It facilitates the connection or separation of the pin unit via the connecting rod 15 and the connecting plate 16.

[0056] The latch unit includes a first insert 17 and a fixing block 18, and the lower outer side of the connecting plate 16 is fixedly connected to the first...

[0057] Insert rod 17, the outer end of the first insert rod 17 away from the connecting plate 16 is inserted into the fixing block 18 and fixed.

[0058] Block 18 is fixedly attached to the partition 5 on its lower side.

[0059] By adopting the above technical solution, the movement of the connecting plate 16 drives the first insertion rod 17 to move, so that the first...

[0060] The insertion rod 17 is inserted into the fixing block 18. The insertion of the first insertion rod 17 and the fixing block 18 facilitates the isolation.

[0061] Plate 5 and upper mold 1 are connected and move synchronously.

[0062] The positioning unit includes a second insert rod 19 and a positioning rod 20, and the second insert rod is fixedly connected to the lower end of the partition plate 5.

[0063] 19. The second insert rod 19 is inserted into the positioning rod 20 on the outside, and the lower side of the positioning rod 20 is fixed to the lower mold 2.

[0064] By adopting the above technical solution, the partition 5 and the lower mold 2 are fitted together, which first drives the second insertion rod 19.

[0065] Inserted into the positioning rod 20, the second insert rod 19 and the positioning rod 20 facilitate the lower mold 2 and the partition plate 5.

[0066] Positioning to prevent partition 5 from shifting.

[0067] Four positioning units are set at both ends of the partition 5, and the four positioning units are arranged symmetrically in pairs.

[0068] By adopting the above technical solution and setting four sets of symmetrical positioning units, the connection between the partition 5 and the lower mold 2 can be made more stable.

[0069] A mold for extruding magnesium alloy castings includes the following steps:

[0070] The first step is to heat and melt the magnesium alloy in a furnace to remove hydrogen and impurities. The second step is to let the molten solution stand for a period of time to obtain refined magnesium liquid.

[0071] The third step is to adjust the position of the blocking unit according to production requirements, which requires the use of lower mold 2.

[0072] During casting within the mold cavity, the rotating unit is turned, causing it to drive the first rotating rod 6 to rotate.

[0073] After the first rotating rod 6 rotates, it drives the rotating unit to rotate to the right, blocking the unit from rotating to the right. At the same time, the first rotating rod 6 drives the transmission unit to operate, causing the transmission unit to move the connecting unit to the left with the assistance of the limiting unit. The leftward movement of the connecting unit causes the pin unit to engage. Then, the liquefied refined magnesium liquid is injected into the inlet pipe 3 through the inlet port 4 through the container, and then flows into the mold cavity of the lower mold 2 through the upper mold 1 and the partition plate 5.

[0074] After it cools and shapes, pull the upper mold 1 upwards, causing the upper mold 1 to drive the partition 5 through the pin unit.

[0075] Move it upwards, then remove the part. If casting is required using the mold cavity within mold 1, twist in the reverse direction.

[0076] The rotating unit causes the first rotating rod 6 to rotate the blocking unit to the left, and the transmission unit drives the moving unit to move to the right.

[0077] This separates the latch unit. Then, liquefied magnesium solution is injected into inlet 4 through the container.

[0078] The liquid is injected into the cavity of the upper mold 1 through the inlet pipe 3. After it cools and solidifies, the upper mold 1 is pulled.

[0079] Separate the upper mold 1 from the partition 5, and then remove the part.

[0080] Working principle: First, based on production needs, when casting is required using the cavity within the lower mold 2,

[0081] Turn the screw pan 10 to the right, causing it to rotate the second rotating rod 9. The rotation of the second rotating rod 9 then rotates the first...

[0082] When the first rotating rod 6 rotates, it drives the turntable 7 and the baffle 8 to rotate to the right, causing the baffle 8 to rotate to the right.

[0083] The passage leading to the upper mold 1 is closed, and at the same time, the rotation of the first rotating rod 6 will drive the gears 11 at both ends to rotate.

[0084] When gear 11 rotates, it meshes with gear plate 12, causing gear plate 12 to be limited by limit rod 13.

[0085] When the limit rod 13 moves to the left, it causes the connecting rod 15 and the connecting plate 16 to move to the left, thus causing the connecting plate 16 to move...

[0086] The first insert 17 is inserted into the fixing block 18, and then the liquefied magnesium liquid is injected into the inlet 4 using a container.

[0087] Inside, it flows through the inlet pipe 3 into the upper mold 1, and then is guided by the baffle 8 to the partition 5.

[0088] The fluid then flows through the partition 5 into the cavity of the lower mold 2 for casting. After the casting is formed, the upper mold is opened.

[0089] Tool 1 allows the upper mold 1 to move the partition plate 5 upwards, after which the casting in the lower mold 2 can be removed. (Upper mold...)

[0090] 1. When the partition 5 returns to its original position, the second insert rod 19 is inserted into the positioning rod 20.

[0091] Positioning is achieved using 19 and positioning rod 20. Then, partition 5 is fitted and fixed to lower mold 2. (This requires...)

[0092] When casting in the mold cavity inside the upper mold 1, turn the screw plate 10 to the left, causing the screw plate 10 to drive the second rotating rod 9.

[0093] Turning left causes the second rotating rod 9 to rotate, which in turn drives the first rotating rod 6 to rotate, causing the first rotating rod 6 to drive the turntable 7 and...

[0094] Baffle 8 turns left, closing the channel leading to the lower mold 2. The first rotating rod 6 rotates in the same manner.

[0095] The step drives the gears 11 at both ends to rotate. The gears 11 mesh with the toothed plate 12, causing the toothed plate 12 to move within a limited range.

[0096] The positioning rod 13 and the limiting block 14 move to the right under their limits, causing the toothed plate 12 to drive the connecting rod 15 and the connecting plate.

[0097] 16 and the first insert 17 move to the right, allowing the first insert 17 to pull out the fixing block 18, and then the liquefied liquid is transferred through the container.

[0098] Molten magnesium is injected into the inlet 4 and flows into the mold cavity of the upper mold 1 through the inlet pipe 3. After cooling and solidification, the upper mold 1 is opened and the casting is removed.

[0099] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A mold for extruding magnesium alloy castings, comprising an upper mold (1), characterized in that: The upper mold (1) is provided with a lower mold (2) on its lower side, and the upper mold (1) is fixedly connected to an inlet pipe (3), and the upper side of the inlet pipe (3) is fixedly connected to an inlet port (4). The lower mold (2) is provided with an adjustment mechanism at its upper end. The adjustment mechanism includes a partition plate (5), a first rotating rod (6), a blocking unit, a rotating unit, a transmission unit, a limiting unit, a connecting unit, a pin unit, and a positioning unit. The upper mold (1) is attached to the partition plate (5) on its lower side, and the partition plate (5) is attached to the lower mold (2) on its lower side. The upper mold (1) is inserted with a first rotating rod (6) inside its upper end. A blocking unit is provided on the outer side of the middle end of the rod (6), and a rotating unit is provided on the front of the first rotating rod (6). The back of the first rotating rod (6) is connected to the upper mold (1). A transmission unit is provided on the outer side of both ends of the first rotating rod (6). A limiting unit is provided at both ends of the transmission unit. A connecting unit is provided on both sides of the transmission unit. A pin unit is provided at the lower end of the connecting unit. A positioning unit is provided inside both ends of the partition plate (5). The blocking unit includes a turntable (7) and a baffle (8). The turntable (7) is fixedly connected to the outer side of the middle end of the first rotating rod (6). The baffle (8) is fixedly connected to the outer side of the turntable (7). The limiting unit includes a limiting rod (13) and a limiting block (14). The limiting rod (13) is inserted inside the end of the toothed plate (12) away from the gear (11). The side of the limiting rod (13) away from the toothed plate (12) is fixedly connected to the upper mold (1). The upper side of the end of the toothed plate (12) away from the limiting rod (13) is fixedly connected to the limiting block. (14); The pin unit includes a first insert rod (17) and a fixing block (18), and the first insert rod (17) is fixedly connected to the outer side of the lower end of the connecting plate (16). The outer side of the first insert rod (17) away from the connecting plate (16) is inserted into the fixing block (18), and the lower side of the fixing block (18) is fixedly connected to the partition plate (5); The positioning unit includes a second insert rod (19) and a positioning rod (20), and the second insert rod (19) is fixedly connected to the inner side of the lower end of the partition plate (5). The outer side of the second insert rod (19) is inserted into the positioning rod (20), and the lower side of the positioning rod (20) is fixedly connected to the lower mold (2).

2. The mold for extruding magnesium alloy castings as described in claim 1, characterized in that, The rotating unit includes a second rotating rod (9) and a screw plate (10), and the first rotating rod (6) is fixedly connected to the second rotating rod (9) on the front side. The end of the second rotating rod (9) away from the first rotating rod (6) passes through the upper mold (1) and is fixedly connected to the screw plate (10).

3. The mold for extruding magnesium alloy castings as described in claim 1, characterized in that, The transmission unit includes a gear (11) and a toothed plate (12), and the gear (11) is fixedly connected to the outer sides of both ends of the first rotating rod (6). The gear (11) meshes with the toothed plate (12) on the outer side of its lower end, and the two sets of gears (11) and toothed plates (12) are arranged on both sides of the inner cavity of the upper mold (1).

4. The mold for extruding magnesium alloy castings as described in claim 1, characterized in that, The connecting unit includes a connecting rod (15) and a connecting plate (16), and the toothed plate (12) is away from the first rotating rod. (6) is fixed to one side of the connecting rod (15), and the connecting rod (15) is fixed to the connecting plate (16) on the side away from the toothed plate (12).

5. The mold for extruding magnesium alloy castings as described in claim 1, characterized in that, The four positioning units are set at both ends of the partition (5), and the four positioning units are set symmetrically in pairs.

6. A process for extruding magnesium alloy castings, the process being based on the mold described in any one of claims 1-5, characterized in that; Includes the following steps, The first step is to put the magnesium alloy into a furnace and heat it to melt it and remove hydrogen and impurities; the second step is to let the molten solution stand for a period of time to obtain refined magnesium liquid. The third step is to adjust the position of the blocking unit according to production needs. When casting is required using the mold cavity in the lower mold (2), the rotating unit is turned so that the rotating unit drives the first rotating rod (6) to rotate. After the first rotating rod (6) rotates, it drives the rotating unit to rotate to the right, and the blocking unit rotates to the right. At the same time, the first rotating rod... (6) Drive the transmission unit to operate, so that the transmission unit drives the connecting unit to move to the left with the assistance of the limiting unit. The leftward movement of the connecting unit causes the pin unit to engage. Then, the liquefied refined magnesium liquid is injected into the inlet pipe (3) through the inlet port (4) through the container. Then, it flows into the mold cavity of the lower mold (2) through the upper mold (1) and the partition plate (5). After it cools and is shaped, the upper mold (1) is pulled up, so that the upper mold (1) drives the partition plate (5) to move up through the pin unit. Then, the part can be taken out. When it is necessary to use the mold cavity in the upper mold (1) for casting, the rotating unit is turned in the opposite direction, so that the first rotating rod (6) drives the blocking unit to turn to the left. The transmission unit drives the moving unit to move to the right, so that the pin unit is separated. At this time, the liquefied magnesium liquid is injected into the inlet port (4) through the container. The liquefied magnesium liquid is injected into the upper mold through the inlet pipe (3). Inside the mold cavity of the mold (1), wait for it to cool and solidify, then pull the upper mold (1) to separate the upper mold (1) from the partition plate (5), and then take out the part.

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