A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming equipment

Abstract

The present invention discloses a centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming equipment, which belongs to the technical field of semi-solid metal casting equipment. The forming equipment includes: a rheological pulping mechanism including a stirring barrel, a mounting bracket, a diverter cone, a plurality of shearing rods and a first driving device, the outer wall of the stirring barrel is connected to the mounting bracket through a first bearing, one end of each shearing rod is fixedly connected to the inner wall of the stirring barrel, and the other end of each shearing rod is connected to the side wall of the diverter cone, the bottom surface of the diverter cone is connected to a liquid retaining umbrella, and a gap is left between the edge of the liquid retaining umbrella and the inner wall of the stirring barrel, and the first driving device is used to drive the stirring barrel to rotate; an extrusion mechanism is connected to a forming mold, and the extrusion mechanism can extrude the semi-solid continuous rheological metal made by the rheological pulping mechanism into the forming mold. The forming equipment of the present invention can prepare uniform fine-grained wires and rods with little slag inclusions through a complete and efficient and continuous semi-solid slurry preparation process.

Description

Technical Field

[0001] The invention relates to the technical field of semi-solid metal casting equipment, in particular to a centrifugal shearing cold wall semi-solid continuous rheological metal plastic extrusion forming equipment. Background Art

[0002] The semi-solid metal (SSM) casting process technology has undergone more than 20 years of research and development. The stirring casting process is to stir the liquid metal strongly during the solidification process, so that the dendrite network skeleton that is easy to form in ordinary casting is broken up to form a dispersed granular structure, thereby making a semi-solid metal liquid, which is then die-cast into billets or castings. The products produced by this technology are characterized by high quality, high performance and high alloying. Compared with ordinary liquid casting, they have many obvious characteristics: reduced solidification shrinkage of castings, high dimensional accuracy of castings, good appearance quality, less machining, high productivity and good mechanical properties.

[0003] However, during the semi-solid metal (SSM) casting process, entanglement defects and intergranular segregation are prone to occur, which seriously affect the mechanical properties of the material. Involvement defects are mainly produced during the preparation of semi-solid slurry, while intergranular segregation occurs during the solidification and forming of semi-solid slurry. The causes of entanglement defects and intergranular segregation are both related to the preparation of semi-solid slurry.

[0004] In the process of preparing semi-solid slurry, traditional rheological metal large plastic deformation extrusion forming equipment cools down the molten metal slurry through repeated mechanical stirring and heat dissipation to turn it into semi-solid metal slurry. However, repeated stirring easily causes the metal oxides on the surface that come into contact with the air and undergo oxidation reaction to be drawn into the metal slurry, which inevitably produces entanglement defects; in traditional rheological metal large plastic deformation extrusion forming equipment, the preparation and forming of semi-solid metal slurry are carried out separately, which easily causes the prepared semi-solid metal slurry to be secondary oxidized before forming, further causing entanglement defects. Moreover, the prepared slurry has not been subjected to fine grain strengthening and supercooling treatment, and is prone to intergranular segregation during the forming process of the extrusion forming equipment, resulting in poor mechanical properties of the manufactured material. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems in the prior art and to provide a centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device.

[0006] The present invention provides a centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device, comprising:

[0007] A rheological pulping mechanism, comprising a stirring barrel, a mounting bracket, a diverter cone, a plurality of shearing rods and a first driving device, wherein the outer wall of the stirring barrel is connected to the mounting bracket via a first bearing, the first bearing can withstand axial force and radial force, the stirring barrel is provided with a discharge port, the diverter cone is arranged in the stirring barrel, one end of each shearing rod is fixedly connected to the inner wall of the stirring barrel, and the other end of each shearing rod is connected to the side wall of the diverter cone, a plurality of shearing rods are arranged in the stirring barrel at different heights, a liquid-blocking umbrella is connected to the bottom surface of the diverter cone, a gap is left between the edge of the liquid-blocking umbrella and the inner wall of the stirring barrel, the first driving device is fixedly connected to the mounting bracket, the first driving device is used to drive the stirring barrel to rotate around its own axis, and the first driving device is electrically connected to a power module;

[0008] The extrusion mechanism is sealed and connected to the discharge port of the mixing barrel. The extrusion mechanism is connected to a forming mold and can extrude the semi-solid continuous rheological metal made by the rheological pulping mechanism into the forming mold.

[0009] Preferably, the extrusion mechanism includes a feeding funnel, a rotary extrusion cavity, a base, a rotating extrusion shaft and a first bearing seat, the funnel mouth of the feeding funnel is connected to the discharge port of the mixing barrel and the two are sealed, the rotary extrusion cavity is fixedly connected to the base, the rotary extrusion cavity is provided with a feeding port, the feeding funnel is connected to the inner cavity of the rotary extrusion cavity through the feeding port, a spiral extrusion rod is provided at one end of the rotary extrusion shaft, the spiral extrusion rod is provided with a spiral groove, the spiral extrusion rod of the rotating extrusion shaft is inserted into the inner cavity of the rotary extrusion cavity from one end of the rotary extrusion cavity, the other end of the rotary extrusion cavity is fixedly connected to the forming mold, the forming mold is provided with a material through hole, the inner cavity of the rotary extrusion cavity is connected to the material through hole, the rotating extrusion shaft body is connected to the first bearing seat through a second bearing, the other end of the rotating extrusion shaft is connected to a second driving device through a third gear, and the second driving device is electrically connected to a power module.

[0010] Preferably, a mounting plate and a second bearing seat are provided between the outer wall of the mixing barrel and the mounting bracket, the mounting plate is fixedly connected to the mounting bracket, the mounting plate is provided with a through hole, the discharge port of the mixing barrel extends downward through the through hole, the second bearing seat is fixedly installed at the through hole on the upper surface of the mounting plate, the outer wall of the mixing barrel is fixedly connected with a flange, and the flange is connected to the second bearing seat through the first bearing.

[0011] Preferably, the first driving device includes a transmission shaft and a power source, the transmission shaft is connected to one side of the mounting bracket through a second bearing, one end of the transmission shaft is gear-connected to the power source through a first gear, the power source is electrically connected to a power module, and a disc gear is also fixedly connected to the outer wall of the mixing barrel, and the disc gear is gear-connected to the other end of the transmission shaft through a second gear.

[0012] Preferably, the first drive device further comprises a synchronization shaft, one end of which is gear-connected to the side of the disc gear opposite to the second gear via a fourth gear, and the body of the synchronization shaft is connected to the side of the mounting bracket opposite to the transmission shaft via a third bearing.

[0013] Preferably, the rheological pulping mechanism also includes a bearing protection sleeve and a protective mesh cover, the edge of the bearing protection sleeve is buckled on the second bearing seat, the flange of the outer wall of the mixing barrel and the first bearing are arranged inside the bearing protection sleeve, the protective mesh cover is fixedly connected to the upper surface of the bearing protection sleeve, and the mixing barrel is arranged inside the protective mesh cover.

[0014] Preferably, an air guide cover is also fixedly connected to the outer wall of the mixing barrel.

[0015] Preferably, the disc gear is a herringbone gear or a helical gear disc gear.

[0016] Preferably, the first bearing can withstand axial force and radial force.

[0017] Preferably, the material passage hole of the molding die is provided with a corner, the passage from the entrance of the material passage hole to the corner is 40 mm long, the passage from the corner to the exit of the material passage hole is 25 mm long, and the angle between the two passages is 130°.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming equipment of the present invention is designed to use a shear rod to divide a large amount of slurry into a continuous small amount of slurry, and the small amount of slurry is broken up in turn and thrown to the side wall of the stirring barrel for rapid cooling, so as to avoid the entanglement defects caused by repeated stirring of the metal slurry for cooling. Moreover, the small amount of slurry broken up by the shear rod plays a role in fine grain strengthening, and the broken small amount of slurry can be quickly cooled by the side wall of the stirring barrel, thereby effectively reducing the content of intercrystalline segregation during the extrusion forming process. The semi-solid metal melt is subjected to the friction, extrusion and shearing of the spiral extrusion rod in the inner cavity of the rotary extrusion cavity, which can further refine the crystals, and the internal temperature and pressure are continuously increased. The high temperature and high pressure environment has a positive effect on solving the problem of intercrystalline segregation. The equipment of the present invention has the advantages of compact structure, strong versatility, good extensibility, high integration, energy saving and environmental protection, and high production efficiency. The use of this equipment can continuously carry out semi-solid pulping and large plastic deformation extrusion processing in one process. The extrusion mechanism is sealed and connected with the discharge port of the mixing barrel, which can effectively prevent the entry of air and cause secondary oxidation of the semi-solid metal slurry, thereby effectively reducing the proportion of entrapment defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a partial cross-sectional view of the rheological pulping mechanism of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the extrusion mechanism of the present invention;

[0022] Figure 4 It is a partial cross-sectional view of the extrusion mechanism of the present invention.

[0023] Description of reference numerals:

[0024] 1. Protective mesh cover, 2. First bearing, 3. Mounting plate, 4. Transmission shaft, 5. Synchronous shaft, 6. Liquid blocking umbrella, 7. Wind guide cover, 8. Shear rod, 9. Diverter cone, 10. Mixing barrel, 11. Feed funnel, 12. Rotary extrusion cavity, 13. Forming mold, 14. Base, 15. Third gear, 16. First bearing seat, 17. Rotating extrusion shaft, 18. Feed inlet, 19. Through hole, 20. Spiral extrusion rod, 21. Bearing protection sleeve, 22. Second bearing seat, 23. First gear, 24. Spiral groove. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 , the specific implementation of the present invention is described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Embodiment 1:

[0027] like Figure 1-4 As shown, a centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device provided by the present invention includes: a rheological pulping mechanism and an extrusion mechanism, the rheological pulping mechanism includes a stirring barrel 10, a mounting bracket, a diverter cone 9, a plurality of shear rods 8 and a first driving device, the outer wall of the stirring barrel 10 is connected to the mounting bracket through a first bearing 2, the first bearing 2 can withstand axial force and radial force, the stirring barrel 10 is provided with a discharge port, the diverter cone 9 is arranged in the stirring barrel 10, one end of each shear rod 8 is fixedly connected to the inner wall of the stirring barrel 10, and the other end of each shear rod 8 is connected to the diverter cone 9. The flow cone 9 is connected to the side wall, and multiple shear rods 8 are arranged in a staggered manner in the mixing barrel 10. The bottom surface of the diverter cone 9 is connected to a liquid-blocking umbrella 6, and a gap is left between the edge of the liquid-blocking umbrella 6 and the inner wall of the mixing barrel 10. The first driving device is fixedly connected to the mounting bracket, and the first driving device is used to drive the mixing barrel 10 to rotate around its own axis. The first driving device is electrically connected to the power module; the extrusion mechanism is sealed and connected to the discharge port of the mixing barrel 10, and the extrusion mechanism is connected to a forming mold 13. The extrusion mechanism can extrude the semi-solid continuous rheological metal made by the rheological pulping mechanism into the forming mold 13.

[0028] like Figure 3 and 4 As shown, the extrusion mechanism includes a feed hopper 11, a rotary extrusion cavity 12, a base 14, a rotary extrusion shaft 17 and a first bearing seat 16, the funnel mouth of the feed hopper 11 is connected to the discharge port of the mixing barrel 10 and the two are sealed, the rotary extrusion cavity 12 is fixedly connected to the base 14, the rotary extrusion cavity 12 is provided with a feed port 18, the feed hopper 11 is connected to the inner cavity of the rotary extrusion cavity 12 through the feed port 18, and one end of the rotary extrusion shaft 17 is provided with a spiral extrusion rod 20, and the spiral extrusion rod 20 is provided with a There is a spiral groove 24, and the spiral extrusion rod 20 of the rotating extrusion shaft 17 is inserted into the inner cavity of the rotating extrusion cavity 12 from one end of the rotating extrusion cavity 12, and the other end of the rotating extrusion cavity 12 is fixedly connected to the forming mold 13, and a material passing hole 19 is provided in the forming mold 13, and the inner cavity of the rotating extrusion cavity 12 is connected to the material passing hole 19, and the shaft body of the rotating extrusion shaft 17 is connected to the first bearing seat 16 through a second bearing, and the other end of the rotating extrusion shaft 17 is connected to a second driving device through a third gear 15, and the second driving device is electrically connected to the power module.

[0029] The working principle of Example 1 is now briefly described:

[0030] Turn on the power supply, start the first drive device and the second drive device, and pour the molten metal into the stirring barrel 10 of the rheological pulping mechanism. The first drive device drives the stirring barrel 10 to rotate, and the molten metal is separated by the diverter cone 9. Driven by the stirring barrel 10, the shear rod 8 starts to rotate, and the separated molten metal is repeatedly hammered and sheared by the rotating shear rod 8, which can achieve the effect of breaking dendrites and refining grains. The molten metal after hammering and shearing falls to the surface of the liquid-blocking umbrella 6 under the influence of gravity, and is thrown to the inner wall of the stirring barrel 10 under the influence of centrifugal force. Since the outer wall of the stirring barrel 10 is cooled by air, the barrel wall of the stirring barrel 10 is cooled, so the metal fluid on the inner wall of the stirring barrel 10 will be quickly cooled to a semi-solid state by conduction. The semi-solid metal melt flows out of the discharge port under the influence of gravity and flows into the feed funnel 11 of the continuous large plastic forming module. The extrusion mechanism is sealed and connected to the discharge port of the mixing barrel 10, which can effectively prevent air from entering and causing secondary oxidation of the semi-solid metal slurry, thereby effectively reducing the proportion of entrapment defects, and flows into the inner cavity of the rotary extrusion cavity 12 through the feed port 18. The second drive device drives the rotary extrusion shaft 17 to rotate, and the rotary extrusion main shaft rolls the semi-solid metal melt into the spiral groove 24. During this period, the semi-solid metal melt is subjected to the friction, extrusion and shearing of the spiral extrusion rod 20 in the inner cavity of the rotary extrusion cavity 12, which can further refine the crystals. The internal temperature and pressure continue to rise, and the high temperature and high pressure environment has a positive effect on solving the problem of intercrystalline segregation. Subsequently, the high temperature and high pressure metal is squeezed into the large plastic forming mold 13, and after undergoing large plastic deformation in the mold, it is extruded out of the forming mold 13 to become a metal profile with excellent microstructure, high quality and high strength.

[0031] The centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming equipment of the present invention is designed to use the shear rod 8 to divide a large amount of slurry into a continuous small amount of slurry, and the small amount of slurry is broken up in turn and thrown to the side wall of the stirring barrel 10 for rapid cooling, so as to avoid the entanglement defects caused by repeated stirring of the metal slurry for cooling. Moreover, the small amount of slurry broken up by the shear rod plays a role in fine grain strengthening, and the broken small amount of slurry can be quickly cooled by the side wall of the stirring barrel, thereby effectively reducing the content of intergranular segregation during the extrusion forming process. The equipment of the present invention can prepare wires and rods with uniform fine grains and few slag inclusions. The equipment of the present invention has the advantages of compact structure, strong versatility, good extensibility, high integration, energy saving and environmental protection, and high production efficiency through modular design. It can continuously perform semi-solid pulping and large plastic deformation extrusion processing in one process, and effectively prevent the secondary oxidation of the surface of the semi-solid metal slurry caused by intermittent semi-solid pulping and large plastic deformation extrusion processing, thereby causing entanglement defects.

[0032] Embodiment 2:

[0033] On the basis of Example 1, in order to obtain sufficiently large torque, the transmission device and the first drive device are further refined.

[0034] like Figure 1 and 2 As shown, a mounting plate 3 and a second bearing seat 22 are further provided between the outer wall of the mixing barrel 10 and the mounting bracket, the mounting plate 3 is fixedly connected to the mounting bracket, the mounting plate 3 is provided with a through hole, the discharge port of the mixing barrel 10 extends downward through the through hole, the second bearing seat 22 is fixedly installed at the through hole on the upper surface of the mounting plate 3, the outer wall of the mixing barrel 10 is fixedly connected with a flange, and the flange is connected to the second bearing seat 22 through the first bearing 2.

[0035] like Figure 1 and 2 As shown, the first driving device includes a transmission shaft 4 and a power source, the transmission shaft 4 is connected to one side of the mounting bracket through a second bearing, one end of the transmission shaft 4 is gear-connected with the power source through a first gear, the power source is electrically connected to a power module, and a disc gear is also fixedly connected to the outer wall of the mixing barrel 10, and the disc gear is gear-connected with the other end of the transmission shaft 4 through a second gear.

[0036] The power source drives the transmission shaft 4 through the first gear, and the transmission shaft 4 drives the mixing barrel 10 to rotate through the second gear and the disc gear. The mounting bracket supports the second bearing seat 22 through the mounting plate 3, and the second bearing seat 22 supports the mixing barrel 10 through the first bearing 2. Through gear transmission, a sufficiently large torque can be transmitted, and the transmission efficiency and response speed can be improved.

[0037] Embodiment 3:

[0038] On the basis of Example 2, since the balancing transmission shaft 4 applies a horizontal unilateral pressure to the mixing barrel 10 during the transmission process, in order to prevent the rotating mixing barrel 10 from vibrating under the unilateral pressure.

[0039] like Figure 1 and 2 As shown, the first driving device also includes a synchronization shaft 5, one end of which is connected to the side of the disc gear opposite to the second gear through a fourth gear, and the body of the synchronization shaft 5 is connected to the side of the mounting bracket opposite to the transmission shaft 4 through a third bearing.

[0040] Since the synchronization shaft 5 is fixedly connected to the side of the mounting bracket opposite to the transmission shaft 4, the synchronization shaft 5 supports the mixing barrel 10 through the fourth gear teeth to balance the horizontal unilateral pressure applied by the transmission shaft 4 to the mixing barrel 10 during the transmission process, thereby preventing the rotating mixing barrel 10 from vibrating under the unilateral pressure.

[0041] As a preferred solution, Figure 1 and 2 As shown, the rheological pulping mechanism further includes a bearing protection sleeve 21 and a protective mesh cover 1, the edge of the bearing protection sleeve 21 is buckled on the second bearing seat 22, the flange of the outer wall of the mixing barrel 10 and the first bearing 2 are arranged inside the bearing protection sleeve 21, the protective mesh cover 1 is fixedly connected to the upper surface of the bearing protection sleeve 21, and the mixing barrel 10 is arranged inside the protective mesh cover 1. The bearing protection sleeve 21 and the protective mesh cover 1 can provide good protection for the operator.

[0042] As a preferred solution, Figure 1 and 2 As shown, the outer wall of the mixing barrel 10 is also fixedly connected with an air guide cover 7. The air guide cover 7 can more efficiently guide the airflow to the outer wall of the mixing barrel 10, thereby improving the heat dissipation efficiency of the barrel wall of the mixing barrel 10.

[0043] As a preferred solution, Figure 1 and 2 As shown, the disc gear is a herringbone gear or a helical gear disc gear. The herringbone gear or helical gear disc gear transmission is more stable and can effectively prevent the mixing barrel 10 from moving up and down.

[0044] As a preferred solution, Figure 1 and 2 As shown, the first bearing 2 can bear axial force and radial force. The first bearing 2 that can bear axial force and radial force at the same time can prevent the mixing barrel 10 from vibrating when rotating.

[0045] As a preferred solution, Figure 3 and 4As shown, the material passage hole 19 of the molding die 13 is provided with a corner, the channel length from the entrance of the material passage hole 19 to the corner is 40 mm, the channel length from the corner to the exit of the material passage hole 19 is 25 mm, and the angle between the two channels is 130°.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming equipment, It is characterized in that include: A rheological pulping mechanism comprises a stirring barrel (10), a mounting bracket, a diverter cone (9), a plurality of shearing rods (8) and a first driving device, wherein the outer wall of the stirring barrel (10) is connected to the mounting bracket via a first bearing (2), the stirring barrel (10) is provided with a discharge port, the diverter cone (9) is arranged in the stirring barrel (10), one end of each shearing rod (8) is fixedly connected to the inner wall of the stirring barrel (10), and the other end of each shearing rod (8) is connected to the side wall of the diverter cone (9), the plurality of shearing rods (8) are arranged in a staggered manner in the stirring barrel (10), the bottom surface of the diverter cone (9) is connected to a liquid retaining umbrella (6), a gap is left between the edge of the liquid retaining umbrella (6) and the inner wall of the stirring barrel (10), the first driving device is fixedly connected to the mounting bracket, the first driving device is used to drive the stirring barrel (10) to rotate around its own axis, and the first driving device is electrically connected to a power module; The tip of the liquid-blocking umbrella (6) faces upward; An extrusion mechanism is sealedly connected to the discharge port of the mixing barrel (10), the extrusion mechanism being connected to a forming die (13), and the extrusion mechanism being capable of extruding the semi-solid continuous rheological metal produced by the rheological pulping mechanism into the forming die (13); The outer wall of the mixing barrel (10) is also fixedly connected with an air guide cover (7); The first bearing (2) is capable of bearing axial force and radial force; The first driving device is started to pour the molten metal into the stirring barrel (10) of the rheological pulping mechanism. The first driving device drives the stirring barrel (10) to rotate, and the molten metal is separated by the diverter cone (9). Driven by the stirring barrel (10), the shear rod (8) starts to rotate. The separated molten metal is repeatedly hammered and sheared by the rotating shear rod (8), which can achieve the effect of breaking dendrites and refining grains. After being hammered and sheared, the molten metal falls to the surface of the liquid retaining umbrella (6) under the influence of gravity, and is thrown to the inner wall of the stirring barrel (10) under the influence of centrifugal force.

2. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device as claimed in claim 1, It is characterized in that The extrusion mechanism comprises a feed hopper (11), a rotary extrusion cavity (12), a base (14), a rotary extrusion shaft (17) and a first bearing seat (16); the funnel opening of the feed hopper (11) is connected to the discharge port of the mixing barrel (10) and the two are sealed; the rotary extrusion cavity (12) is fixedly connected to the base (14); the rotary extrusion cavity (12) is provided with a feed opening (18); the feed hopper (11) is connected to the inner cavity of the rotary extrusion cavity (12) through the feed opening (18); a spiral extrusion rod (20) is provided at one end of the rotary extrusion shaft (17); the spiral extrusion rod (20) is provided with a The spiral groove (24) is provided in the molding die (13). The spiral extrusion rod (20) of the rotary extrusion shaft (17) is inserted into the inner cavity of the rotary extrusion cavity (12) from one end of the rotary extrusion cavity (12). The other end of the rotary extrusion cavity (12) is fixedly connected to the molding die (13). The molding die (13) is provided with a material passing hole (19). The inner cavity of the rotary extrusion cavity (12) is connected to the material passing hole (19). The shaft body of the rotary extrusion shaft (17) is connected to the first bearing seat (16) via a second bearing. The other end of the rotary extrusion shaft (17) is connected to a second drive device via a third gear (15). The second drive device is electrically connected to a power module.

3. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device as claimed in claim 1, It is characterized in that A mounting plate (3) and a second bearing seat (22) are further provided between the outer wall of the mixing barrel (10) and the mounting bracket. The mounting plate (3) is fixedly connected to the mounting bracket. The mounting plate (3) is provided with a through hole. The discharge port of the mixing barrel (10) extends downward through the through hole. The second bearing seat (22) is fixedly installed at the through hole on the upper surface of the mounting plate (3). A flange is fixedly connected to the outer wall of the mixing barrel (10). The flange is connected to the second bearing seat (22) via the first bearing (2).

4. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device as claimed in claim 3, It is characterized in that The first driving device comprises a transmission shaft (4) and a power source, the transmission shaft (4) being connected to one side of the mounting bracket via a second bearing, one end of the transmission shaft (4) being gear-connected to the power source via a first gear, the power source being electrically connected to a power module, and a disc gear being fixedly connected to the outer wall of the mixing barrel (10), the disc gear being gear-connected to the other end of the transmission shaft (4) via a second gear.

5. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device as claimed in claim 4, It is characterized in that The first driving device further comprises a synchronizing shaft (5), one end of the synchronizing shaft (5) being gear-connected to a side of the disc gear opposite to the second gear via a fourth gear, and a body of the synchronizing shaft (5) being connected to a side of the mounting bracket opposite to the transmission shaft (4) via a third bearing.

6. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device as claimed in claim 3, It is characterized in that The rheological pulping mechanism further comprises a bearing protection sleeve (21) and a protective mesh cover (1); the edge of the bearing protection sleeve (21) is buckled onto the second bearing seat (22); the flange of the outer wall of the mixing barrel (10) and the first bearing (2) are arranged inside the bearing protection sleeve (21); the protective mesh cover (1) is fixedly connected to the upper surface of the bearing protection sleeve (21); and the mixing barrel (10) is arranged inside the protective mesh cover (1).

7. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device as claimed in claim 4, It is characterized in that The disc gear is a herringbone gear or a helical gear disc gear.

8. A centrifugal shear cold wall semi-solid continuous rheological metal plastic extrusion forming device as claimed in claim 2, It is characterized in that The material passage hole (19) of the molding die (13) is provided with a corner, the passage from the entrance of the material passage hole (19) to the corner is 40 mm long, the passage from the corner to the exit of the material passage hole (19) is 25 mm long, and the angle between the two passages is 130°.

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