Forming device for semi-solid magnesium alloy

Abstract

The utility model discloses a semi-solid magnesium alloy forming device, and relates to the technical field of magnesium alloy processing. The device comprises a cooling assembly and an extrusion assembly, the cooling assembly is arranged on the peripheral side of the extrusion assembly, a rectangular frame is arranged on the upper side of the cooling assembly, and a dustproof net plate is placed on the upper side of the rectangular frame; two rectangular insertion boxes are arranged on the dustproof net plate, U-shaped frames are arranged in the rectangular insertion boxes in a sliding fit mode, two rotating plates are arranged in the rectangular insertion boxes in a rotating fit mode, two sliding plates are arranged in the rectangular insertion boxes in an elastic fit mode, T-shaped blocks are arranged on the upper sides of the U-shaped frames, and the upper portions of the T-shaped blocks penetrate out of the rectangular insertion boxes. According to the dustproof net plate, the T-shaped block is pressed to drive the U-shaped frame to move downwards to extrude the two rotating plates to rotate, and the convex column is matched with the vertical channel to force the sliding plate to drive the clamping block to slide and displace, so that the clamping block is separated from the clamping groove and retracts into the rectangular insertion box, the dustproof net plate is conveniently and quickly disassembled, and the convenience of replacing or disassembling and cleaning the dustproof net plate is improved.

Description

Technical Field

[0001] This utility model belongs to the field of magnesium alloy processing, specifically, it relates to a forming device for semi-solid magnesium alloys. Background Technology

[0002] Magnesium alloys are alloys composed of magnesium as the base and other elements. They are characterized by low density, high strength, high elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloys, and good resistance to corrosion by organic matter and alkalis.

[0003] Chinese Patent No. CN213559810U discloses an extrusion device for high-strength magnesium alloy semi-solid high-speed injection molding, comprising: an extrusion box, with support legs fixedly installed around the bottom of the extrusion box, a magnesium alloy particle guide hopper fixedly installed on the left side of the top of the extrusion box, and a guide pipe with one end penetrating through and extending into the interior of the extrusion box fixedly installed at the bottom of the magnesium alloy particle guide hopper.

[0004] The high-strength magnesium alloy semi-solid high-speed injection molding extrusion device disclosed in the application has a fixed dust screen in the ventilation hole, which makes it difficult to disassemble, replace or clean. If the dust screen is damaged after long-term use, it will be difficult to effectively intercept dust. Furthermore, directly cleaning the dust screen inside the ventilation hole can easily allow dust and dirt to enter the cooling box and contaminate the clean water. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a semi-solid magnesium alloy forming device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A semi-solid magnesium alloy forming device includes: a cooling component and an extrusion component. The cooling component is installed around the extrusion component. A rectangular frame is installed on the upper side of the cooling component. A dustproof mesh plate is placed on the upper side of the rectangular frame. Two handles are installed on the dustproof mesh plate.

[0008] Two rectangular boxes are installed on the dustproof mesh plate. The upper part of the rectangular boxes is fixedly connected to the dustproof mesh plate in a vertical through-hole manner. Inside the rectangular boxes, there is a U-shaped frame that slides, two rotating plates that rotate, and two sliding plates that elastically engage. A T-shaped block is installed on the upper side of the U-shaped frame, and the upper part of the T-shaped block extends through the rectangular box. The upper side of the T-shaped block is located above the dustproof mesh plate. The lower ends of the U-shaped frame abut against one of the rotating plates. Two locking blocks are installed on the outer sides of the two sliding plates. A protruding post is provided on one side of the lower part of the rotating plate. The sliding plate, locking block, and protruding post are all located between the two rotating plates. A vertical channel is provided on the side of the sliding plate adjacent to the locking block. The protruding post is located in the corresponding vertical channel. The height of the vertical channel is greater than the diameter of the protruding post. Two slots are provided on the upper side of the rectangular frame. The hollow area of ​​the rectangular frame is located between the two slots. The lower part of the rectangular box is engaged in the slot. Two slots are provided on both sides of the inner wall of the slot. The end of the locking block away from the sliding plate extends through the rectangular box and is engaged in the slot.

[0009] Optionally, a first fixed post is installed between the two sides of the inner wall of the rectangular insert box, and a rotating cylinder is provided on the upper part of the rotating plate, which is rotatably engaged with the first fixed post. One of the rotating cylinders is located at one end face of the other rotating cylinder, and the rotating cylinder is located between the two ends of the lower part of the U-shaped frame.

[0010] Optionally, a second fixing post is installed between the two sides of the inner wall of the rectangular insertion box. The second fixing post passes through the two sliding plates laterally and is located between the upper and lower locking blocks. Two springs are installed between the two sliding plates, and the second fixing post is located between the upper and lower springs.

[0011] Optionally, the extrusion assembly includes a discharge pipe with a feed hopper at the top, the feed hopper being connected to the discharge pipe, a cooling assembly installed around the discharge pipe, the feed hopper being located on one side of the cooling assembly, a motor installed at one end of the discharge pipe, the motor output shaft passing through the discharge pipe, a main shaft being fixedly connected to the motor output shaft, and spiral blades being welded around the main shaft, both the main shaft and the spiral blades being rotatably engaged within the discharge pipe.

[0012] Optionally, the cooling assembly includes a box body installed around the discharge pipe, a rectangular frame installed on the upper side of the box body, the rectangular frame being connected to the inner cavity of the box body, and multiple support legs installed on the lower side of the box body.

[0013] Optionally, a horizontal pipe is installed between the two sides of the inner wall of the box. Multiple nozzles are connected to the bottom of the horizontal pipe. The nozzles are distributed horizontally at equal intervals and are located above the discharge pipe. A circulation pump is installed on one side of the box and connected to an L-shaped liquid extraction pipe. The L-shaped liquid extraction pipe is connected to the bottom of the inner cavity of the box and to the bottom of the circulation pump. A liquid supply pipe is connected between the side of the horizontal pipe and the circulation pump. The liquid supply pipe and the nozzles are both connected to the horizontal pipe.

[0014] Optionally, a drain pipe is connected to the lower side of the box, and the drain pipe is connected to the inner cavity of the box. A solenoid valve is installed on the drain pipe.

[0015] Optionally, multiple fans are installed between the two sides of the inner wall of the rectangular frame. The multiple fans are distributed horizontally at equal intervals and are located between the dustproof mesh and the horizontal pipe.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] By pressing the T-shaped block, the U-shaped frame is driven to move downward, squeezing the two rotating plates to rotate. The convex column cooperates with the vertical channel, forcing the sliding plate to drive the locking block to slide and displace, thereby causing the locking block to disengage from the slot and retract into the rectangular insertion box. This facilitates quick disassembly of the dustproof mesh panel, improving the convenience of replacing or disassembling and cleaning the dustproof mesh panel. The locking block quickly resets and locks into the slot under the action of elasticity, facilitating a stable connection between the rectangular insertion box and the rectangular frame, improving the convenience and stability of dustproof mesh panel installation.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure;

[0022] Figure 3 This is a schematic diagram of the internal structure of a rectangular insert box.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Box body, 2. Support leg, 3. Discharge pipe, 4. Drain pipe, 5. Motor, 6. Spiral blade, 7. Circulating pump, 8. L-shaped liquid extraction pipe, 9. Feed hopper, 10. Horizontal pipe, 11. Nozzle, 12. Rectangular frame, 13. Fan, 14. Dustproof mesh plate, 15. Handle, 16. Rectangular insert box, 17. T-shaped block, 18. U-shaped frame, 19. First fixed column, 20. Rotating cylinder, 21. Rotating plate, 22. Sliding plate, 23. Clamping block, 24. Spring, 25. Second fixed column.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

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

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Semi-solid magnesium alloy forming technology, as an important branch of metal processing, has demonstrated significant advantages in the manufacture of lightweight structural components in recent years. The core of this process lies in utilizing the unique rheological properties of metallic materials in a solid-liquid coexistence state, enabling them to fill complex molds under relatively low pressure while reducing shrinkage defects and improving the density and mechanical properties of the finished product. Magnesium alloys, due to their excellent specific strength, superior shock absorption, and recyclability, have become an ideal choice for lightweight components in the automotive, aerospace, and consumer electronics industries. However, the high chemical reactivity of magnesium alloys at high temperatures, especially the extreme sensitivity of semi-solid slurries to temperature fluctuations, places stringent requirements on the temperature control accuracy, structural design, and operational safety of the forming equipment.

[0029] In existing technologies, semi-solid forming equipment typically consists of an alloy melting / slurry preparation unit, a conveying system, a forming die, and an auxiliary temperature control module. Among these, extrusion forming equipment is widely used due to its continuous production capacity and good control over the rheological behavior of the slurry. Its basic structure includes: a barrel containing the semi-solid slurry, an internally rotating screw propeller, a drive motor, a heating / cooling system, and a die outlet. During operation, the pre-made semi-solid magnesium alloy slurry is fed into the barrel, where it maintains a uniform temperature field and moves towards the die end under the shearing and conveying action of the screw, finally being extruded and formed under controllable pressure. The barrel, as a key channel for temporary storage and conveying of the slurry, directly determines the stability of the slurry's solid fraction and the performance of the final product due to its temperature uniformity. Since magnesium alloy melt is highly susceptible to oxidation and even combustion above a certain temperature, and the semi-solid process window is narrow (usually a narrow range of about 30-50℃ between the solidus and liquidus), precise and efficient cooling of the barrel and its surrounding environment is a core element in ensuring process stability and safety.

[0030] For cooling the barrel, existing technologies generally employ fluid medium heat exchange. Based on the contact method between the cooling medium and the barrel, it can be divided into direct cooling and indirect cooling. Direct cooling typically refers to the cooling medium (such as a water-based solution or oil) directly contacting the outer wall of the barrel for heat exchange through spraying, immersion, or other methods. This method has high heat exchange efficiency and a relatively simple system structure. For example, some equipment uses an annular water jacket around the barrel, where cooling water circulates and carries away heat. A more efficient solution is to install a cooling tank with perforated spray pipes above the barrel. The coolant is pumped and sprayed evenly onto the high-temperature barrel surface through nozzles, rapidly absorbing heat through droplet evaporation and conduction, and then collected and returned to a storage tank for recycling. However, direct cooling faces two major challenges: first, if the cooling medium (especially water) accidentally seeps into or splashes onto the high-temperature magnesium alloy slurry, it may trigger a violent reaction or even an explosion risk, requiring extremely high safety precautions; second, open spray systems are susceptible to environmental dust pollution, and the accumulation of impurities in the water can clog nozzles, corrode pipes, or reduce heat exchange efficiency.

[0031] Indirect cooling is achieved through air cooling or closed-loop liquid cooling. Air cooling systems typically use high-power fans to force airflow through heat dissipation fins or channels surrounding the barrel, utilizing air convection for heat dissipation. Its advantages include high safety, simple maintenance, and no risk of media leakage. However, its disadvantages include the low specific heat capacity of air, resulting in a much lower heat exchange efficiency than liquid cooling. This is especially problematic when handling large barrels or high-output conditions, where its heat dissipation capacity is often insufficient, failing to meet the stringent requirements of rapid and uniform cooling for semi-solid magnesium alloys. Closed-loop liquid cooling uses a coolant (such as heat transfer oil or antifreeze) circulating within sealed pipes, ultimately transferring heat from the barrel to an external cooling tower or chiller unit via a heat exchanger (such as a plate heat exchanger). This method balances safety and heat exchange efficiency, but the system is complex, costly, and requires additional heat exchange facilities, limiting its application in space-constrained mobile equipment or small production lines.

[0032] Regardless of the cooling method used, maintaining the cleanliness and stability of the cooling system itself is crucial. For open or semi-open cooling boxes that rely on airflow (such as some air-cooled enhanced liquid cooling systems), the vents are the necessary channels for ambient air to enter. If airborne dust, fibers, and oil contaminants enter the box directly without treatment, they will cause multiple problems: dust accumulates on the surface of cooling pipes or spray components, forming a heat insulation layer that significantly reduces heat exchange efficiency; tiny particles may clog the precision channels of the spray nozzles, leading to uneven spraying or even malfunction; more seriously, some conductive dust or corrosive contaminants may cause short circuits in electrical equipment or accelerate the corrosion of metal components. Therefore, dustproof measures for the vents are a fundamental configuration for ensuring the long-term operation of the cooling system.

[0033] Currently, the ventilation and dust control structures of most molding equipment are relatively basic. The most common method is to embed a single or multiple layers of woven metal wire mesh (i.e., dustproof mesh) at the ventilation openings, which is rigidly fixed to the ventilation frame by welding, riveting, or bolting. This fixed dustproof mesh structure is simple and inexpensive, and can effectively intercept larger particles for a certain period of time. However, its inherent defects have gradually become apparent in actual operation: First, long-term exposure to high-speed airflow and temperature and humidity changes can cause the metal wire mesh to break or deform locally due to repeated thermal stress or mechanical fatigue, forming pores; second, the dust composition in industrial production environments is complex, especially oily or sticky particles, which easily adhere to and clog the mesh, significantly reducing ventilation efficiency; most importantly, the fixed installation method makes cleaning and maintenance extremely inconvenient—operators can often only perform limited surface wiping or vacuuming from the outside of the ventilation opening, and cannot thoroughly remove stubborn dirt embedded in the mesh or check the condition of the back of the mesh. Deep cleaning or replacement of damaged filters typically requires disassembling the entire ventilation assembly and even part of the cooling box structure, resulting in significant downtime. Furthermore, the disassembly and reassembly process carries the risk of accidentally dislodging trapped contaminants into the clean areas inside the box, potentially exacerbating system contamination. In addition, the simple fixing mesh lacks a quick-release mechanism, making emergency maintenance or routine upkeep cumbersome and impacting the overall utilization rate of the equipment.

[0034] In summary, existing semi-solid magnesium alloy forming equipment, especially its cooling system and ventilation / dustproof structure, still has room for optimization in achieving a balance between efficient heat exchange, operational safety, and convenient maintenance. Improving cooling efficiency while ensuring system cleanliness, and addressing the pain points of difficult disassembly and inconvenient maintenance of dustproof components, are important directions for promoting the wider application of this technology. This requires innovative improvements across multiple dimensions, including material selection, structural design, and operating procedures, to meet the higher requirements of modern production for equipment reliability, safety, and maintainability.

[0035] Please see Figure 1-3 As shown, this embodiment provides a semi-solid magnesium alloy forming device, including: a cooling component and an extrusion component. The cooling component is installed on the periphery of the extrusion component. A rectangular frame 12 is installed on the upper side of the cooling component. A dustproof mesh plate 14 is placed on the upper side of the rectangular frame 12. Two handles 15 are installed on the dustproof mesh plate 14.

[0036] Two rectangular boxes 16 are installed on the dustproof mesh plate 14. The upper part of the rectangular boxes 16 is fixedly connected to the dustproof mesh plate 14 in a vertical through-hole manner. A U-shaped frame 18 is slidably fitted inside the rectangular box 16, two rotating plates 21 are rotatably fitted, and two sliding plates 22 are elastically fitted. A T-shaped block 17 is installed on the upper side of the U-shaped frame 18, and the upper part of the T-shaped block 17 extends through the rectangular box 16. The upper side of the T-shaped block 17 is located above the dustproof mesh plate 14. The lower ends of the U-shaped frame 18 abut against one of the rotating plates 21 respectively. Two sliding plates 22 are installed on the outer sides of each other. The lower side of the rotating plate 21 has a protruding post. The sliding plate 22, the block 23, and the protruding post are all located between the two rotating plates 21. The sliding plate 22 has a vertical channel on the side adjacent to the block 23. The protruding post is located in the corresponding vertical channel. The height of the vertical channel is greater than the diameter of the protruding post. The upper side of the rectangular frame 12 has two slots. The hollow area of ​​the rectangular frame 12 is located between the two slots. The lower part of the rectangular insert box 16 is engaged in the slot. There are two card slots on both sides of the inner wall of the slot. The end of the block 23 away from the sliding plate 22 passes through the rectangular insert box 16 and is engaged in the card slot.

[0037] One application of this embodiment is as follows: When the dustproof mesh 14 needs to be disassembled and replaced, first press down on the T-shaped block 17, causing the T-shaped block 17 to push the U-shaped frame 18 downwards. The U-shaped frame 18 slides down and presses the lower parts of the two rotating plates 21 to rotate closer. The rotation of the rotating plates 21 drives the convex pillars to rotate synchronously. The convex pillars press against the groove wall of the vertical channel, forcing the sliding plate 22 to slide and move. The two sliding plates 22 move closer to each other, causing the locking block 23 to retract and disengage from the slot. Then, the handle 15 can be lifted to remove the dustproof mesh 14 from the rectangular frame 12, and the rectangular insert box 16 can be pulled out of the slot. Similarly, referring to the above operation, the replaced dustproof mesh 14 can be quickly installed. It should be noted that all electrical equipment involved in this application can be powered by a battery or an external power source.

[0038] By pressing the T-shaped block 17, the U-shaped frame 18 is driven to move down and squeeze the two rotating plates 21 to rotate. The convex column cooperates with the vertical channel, forcing the sliding plate 22 to drive the locking block 23 to slide and move, so that the locking block 23 disengages from the slot and retracts into the rectangular insert box 16, which facilitates the quick disassembly of the dustproof mesh plate 14 and improves the convenience of replacing or disassembling and cleaning the dustproof mesh plate 14. The locking block 23 quickly resets and locks into the slot under the action of elasticity, which facilitates the stable connection between the rectangular insert box 16 and the rectangular frame 12, and improves the convenience and stability of the installation of the dustproof mesh plate 14.

[0039] like Figure 3As shown, in this embodiment, a first fixing post 19 is installed between the two sides of the inner wall of the rectangular insert box 16. A rotating cylinder 20 is provided on the upper part of the rotating plate 21 and rotates around the first fixing post 19. One rotating cylinder 20 is located at one end face of the other rotating cylinder 20. The rotating cylinder 20 is located between the two ends of the lower part of the U-shaped frame 18. The first fixing post 19 provides a support point for the rotating cylinder 20 on the upper part of the rotating plate 21, thereby improving the stability of the rotation of the rotating plate 21.

[0040] like Figure 3 As shown, in this embodiment, a second fixing post 25 is installed between the two sides of the inner wall of the rectangular insert box 16. The second fixing post 25 passes through the two sliding plates 22 laterally. The second fixing post 25 is located between the upper and lower locking blocks 23. Two springs 24 are installed between the two sliding plates 22. The second fixing post 25 is located between the upper and lower springs 24. By passing through the two sliding plates 22 laterally, the sliding trajectory of the sliding plates 22 can be restricted, and the sliding stability of the sliding plates 22 can be improved. By setting the springs 24 between the two sliding plates 22, it is convenient to push the sliding plates 22 to quickly reset by the elastic force of the springs 24 after the T-shaped block 17 is released, and force the rotating plate 21 and the U-shaped frame 18 to reset.

[0041] like Figure 1 , 2 As shown, the extrusion assembly of this embodiment includes a discharge pipe 3, a feed hopper 9 at the top of the discharge pipe 3, the feed hopper 9 being connected to the discharge pipe 3, a cooling assembly installed on the periphery of the discharge pipe 3, the feed hopper 9 being located on one side of the cooling assembly, a motor 5 installed on one end face of the discharge pipe 3, the output shaft of the motor 5 passing through the discharge pipe 3, the output shaft of the motor 5 being fixedly connected to a main shaft, and a spiral blade 6 being welded to the periphery of the main shaft, both the main shaft and the spiral blade 6 being rotatably fitted inside the discharge pipe 3, the main shaft and the spiral blade 6 being driven by the motor 5 to rotate inside the discharge pipe 3, facilitating the pushing and extrusion of the semi-solid magnesium alloy slurry added through the feed hopper 9 towards the outlet of the discharge pipe 3, so that the semi-solid magnesium alloy slurry is injected into the mold for molding.

[0042] like Figure 1 , 2 As shown, the cooling component of this embodiment includes a box 1 installed around the discharge pipe 3, a rectangular frame 12 installed on the upper side of the box 1, the rectangular frame 12 being connected to the inner cavity of the box 1, and multiple support legs 2 installed on the lower side of the box 1. The box 1 encloses the discharge pipe 3, and the surface of the discharge pipe 3 is cooled by the clean water inside the box 1, reducing the probability of the clean water inside the box 1 coming into contact with the semi-solid magnesium alloy slurry. The rectangular frame 12 is installed on the upper side of the box 1 and connected to its inner cavity, facilitating the use of the dustproof mesh plate 14 to filter the air entering the box 1.

[0043] like Figure 1 , 2As shown, in this embodiment, a horizontal pipe 10 is installed between the two sides of the inner wall of the box 1. Multiple nozzles 11 are connected to the bottom of the horizontal pipe 10. The multiple nozzles 11 are distributed horizontally at equal intervals. The nozzles 11 are located above the discharge pipe 3. A circulation pump 7 and an L-shaped liquid extraction pipe 8 are installed on one side of the box 1. The L-shaped liquid extraction pipe 8 is connected to the bottom of the inner cavity of the box 1 and is connected to the bottom of the circulation pump 7. The output end of the circulation pump 7 extends into the box 1. A liquid supply pipe is connected between the side of the horizontal pipe 10 and the circulation pump 7. The liquid supply pipe and the nozzles 11 are both connected to the horizontal pipe 10. By setting multiple nozzles 11 above the discharge pipe 3, it is convenient for the nozzles 11 to spray clean water onto the surface of the discharge pipe 3 below for cooling. The circulation pump 7 draws liquid from the bottom of the box 1 through the L-shaped liquid extraction pipe 8 and then transports it to the horizontal pipe 10 through the liquid supply pipe, which is convenient for providing clean water to the nozzles 11 and for recycling the clean water in the box 1.

[0044] like Figure 1 , 2 As shown, in this embodiment, a drain pipe 4 is connected to the lower side of the box 1. The drain pipe 4 is connected to the inner cavity of the box 1. A solenoid valve is installed on the drain pipe 4. By installing a drain pipe 4 with a solenoid valve on the lower side of the box 1, it is convenient to control the discharge of wastewater in the box 1 and reduce the total weight of the device during transportation or handling.

[0045] like Figure 2 As shown, multiple fans 13 are installed between the two sides of the inner wall of the rectangular frame 12 in this embodiment. The multiple fans 13 are distributed horizontally at equal intervals. The fans 13 are located between the dustproof mesh plate 14 and the horizontal pipe 10. By setting multiple fans 13 in the rectangular frame 12, it is convenient to force the airflow downward, enhance the airflow exchange on the spray area and the surface of the discharge pipe 3, and improve the heat dissipation efficiency of the clean water and the discharge pipe 3.

[0046] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A molding apparatus for semi-solid magnesium alloys, characterized in that, include: Cooling component and extrusion component, the cooling component is installed on the periphery of the extrusion component, a rectangular frame (12) is installed on the upper side of the cooling component, and a dustproof mesh plate (14) is placed on the upper side of the rectangular frame (12); Two rectangular inserts (16) are mounted on the dustproof mesh plate (14). A U-shaped frame (18) is slidably fitted inside the rectangular insert (16), two rotating plates (21) are rotatably fitted inside, and two sliding plates (22) are elastically fitted inside. A T-shaped block (17) is mounted on the upper side of the U-shaped frame (18). The upper part of the T-shaped block (17) extends through the rectangular insert (16). The two ends of the lower part of the U-shaped frame (18) abut against one of the rotating plates (21) and the two sliding plates (22). Two locking blocks (23) are installed on the outer side of each side. A protruding post is provided on one side of the lower part of the rotating plate (21). A vertical channel is provided on one side of the sliding plate (22) adjacent to the locking block (23). The protruding post is located in the corresponding vertical channel. Two slots are provided on the upper side of the rectangular frame (12). The lower part of the rectangular insert box (16) is locked in the slot. Two slots are provided on both sides of the inner wall of the slot. The end of the locking block (23) away from the sliding plate (22) passes through the rectangular insert box (16) and is locked in the slot.

2. The semi-solid magnesium alloy forming apparatus according to claim 1, characterized in that, A first fixed post (19) is installed between the two sides of the inner wall of the rectangular insert box (16), and a rotating cylinder (20) is provided on the upper part of the rotating plate (21) and rotates around the first fixed post (19).

3. The semi-solid magnesium alloy forming apparatus according to claim 1, characterized in that, A second fixing post (25) is installed between the two sides of the inner wall of the rectangular insert box (16). The second fixing post (25) passes through the two sliding plates (22) laterally. Two springs (24) are installed between the two sliding plates (22).

4. The semi-solid magnesium alloy forming apparatus according to claim 1, characterized in that, The extrusion assembly includes a discharge pipe (3), a feed hopper (9) at the top of the discharge pipe (3), a cooling assembly installed on the periphery of the discharge pipe (3), a motor (5) installed on one end face of the discharge pipe (3), a main shaft fixedly connected to the output shaft of the motor (5), and a spiral blade (6) welded on the periphery of the main shaft. The main shaft and the spiral blade (6) are both rotatably fitted inside the discharge pipe (3).

5. The semi-solid magnesium alloy forming apparatus according to claim 4, characterized in that, The cooling assembly includes a box (1) installed around the discharge pipe (3), a rectangular frame (12) installed on the upper side of the box (1), and multiple support legs (2) installed on the lower side of the box (1).

6. The semi-solid magnesium alloy forming apparatus according to claim 5, characterized in that, A horizontal pipe (10) is installed between the two sides of the inner wall of the box (1). Multiple nozzles (11) are connected to the bottom of the horizontal pipe (10). A circulation pump (7) and an L-shaped liquid extraction pipe (8) are installed on one side of the box (1). The L-shaped liquid extraction pipe (8) is connected to the bottom of the circulation pump (7). A liquid supply pipe is connected between the side of the horizontal pipe (10) and the circulation pump (7).

7. The semi-solid magnesium alloy forming apparatus according to claim 5, characterized in that, A drain pipe (4) is connected to the lower side of the box (1), and a solenoid valve is installed on the drain pipe (4).

8. The semi-solid magnesium alloy forming apparatus according to claim 6, characterized in that, Multiple fans (13) are installed between the two sides of the inner wall of the rectangular frame (12), and the fans (13) are located between the dustproof mesh plate (14) and the horizontal pipe (10).

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