Variable cross-section aluminum alloy section hot extrusion device

Abstract

The invention discloses a variable cross-section aluminum alloy section hot extrusion device, and relates to the field of metal manufacturing, the variable cross-section aluminum alloy section hot extrusion device comprises an upper machine box, an anti-inclination mechanism, a cooling mechanism and an automatic feeding mechanism, a machine shell is arranged in the upper machine box, a driving box is arranged in the middle of the inner side of the machine shell, and an extrusion mold is arranged at the bottom of the driving box; according to the variable cross-section aluminum alloy section hot extrusion device, a motor drives a driving gear to rotate and drives racks on the two sides to move relatively, so that a V-shaped rotating rod and a matched rotating plate drive a pressing plate to press downwards, the pressing plate is driven to press downwards, and therefore the hot extrusion efficiency of the variable cross-section aluminum alloy section is improved, and the hot extrusion efficiency of the variable cross-section aluminum alloy section is improved. The pressing blocks make contact with the two sides of the sectional material, the first reset springs are compressed, the extension rods and the bottom blocks are supported and guided, the pressing plates always press the two sides of the sectional material in the extrusion process to prevent the sectional material from tilting, the stability of the sectional material in the extrusion process is guaranteed, and the forming quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal manufacturing, and specifically to a hot extrusion device for variable-section aluminum alloy profiles. Background Art

[0002] Hot extrusion equipment for variable-section aluminum alloy profiles is used to produce profiles with varying cross-sectional shapes through a hot extrusion process. Numerous challenges often arise during the hot extrusion process. For example, the profiles are prone to warping on both sides during extrusion, seriously affecting the quality of the profile. Furthermore, the high temperatures of the extrusion die over extended periods of use can affect the service life and quality of the profiles. Furthermore, feeding and cleaning the extruded profiles present challenges, making efficient automated production difficult and ensuring surface quality difficult.

[0003] In the existing technology, such as the patent "A hot extrusion device for variable-section aluminum alloy profiles" with publication number CN113102534B, an electric heating plate inside the extrusion component is used to heat the aluminum alloy to improve processing convenience and efficiency; an adjustment component is used to process the variable section of the aluminum alloy profile, and a cleaning component is used to clean the processed aluminum alloy profile.

[0004] However, in the actual hot extrusion process, the profile often warps on both sides due to factors such as uneven force when being extruded, and the stability of the profile during the extrusion process cannot be guaranteed.

[0005] Therefore, in order to study and improve the existing deficiencies, a variable-section aluminum alloy profile hot extrusion device was proposed. Summary of the Invention

[0006] The object of the present invention is to provide a hot extrusion device for aluminum alloy profiles with variable cross-sections to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a variable-section aluminum alloy profile hot extrusion device, comprising: an upper chassis, an anti-tilt mechanism, a cooling mechanism, and an automatic feeding mechanism, wherein a housing is provided inside the upper chassis, a drive box is provided in the middle of the inner side of the housing, an extrusion die is provided at the bottom of the drive box, an external frame is provided outside the upper chassis, a base is provided at the bottom end of the external frame, a bottom press is provided on the top of the base, and a guide plate is provided in the middle of one side of the outer side of the base, which is tilted downward; The anti-tilt mechanism is used to prevent the aluminum alloy profile from tilting on both sides during the extrusion process; The cooling mechanism is used to cool the outside of the extrusion die at the bottom of the drive box; The automatic feeding mechanism is used to feed out the extruded aluminum alloy profiles.

[0008] Furthermore, the anti-tilt mechanism includes a motor body, a pressure plate, a first guide rod, a first rotating rod, a first matching rotating plate, a pressure block, a connecting rod, and a bottom block. A first side rack is horizontally penetrated inside the through hole on one side of the external frame, one end of the first side rack is connected to the first guide rod, the front end of the first guide rod is an L-shaped portion, the front end of the L-shaped portion of the first guide rod is rotatably provided with a first rotating rod, one end of the first rotating rod is fixedly provided with a first matching rotating plate, a pressure plate is provided at the bottom of the first matching rotating plate, a pressure block is provided at the bottom of the connection between the rear end of the pressure plate and the first matching rotating plate, a first return spring is provided at the bottom of the pressure block, a matching rod is provided inside the first return spring, and a bottom block is provided at the bottom of the matching rod.

[0009] Furthermore, the anti-tilt mechanism also includes an external frame, a second side rack, a second guide rod, a second rotating rod, and a second rotating plate. A through hole is provided on the other side of the external frame, and a second side rack is horizontally penetrated inside the through hole on the other side of the external frame. A second guide rod is provided at one end of the second side rack, and a second rotating rod is provided for external rotation of the second guide rod. A second rotating plate is provided at the bottom of the back side of the second rotating rod, and a pressure plate is provided at the bottom of the second rotating plate. A pressure block is provided at the bottom of the connection between the rear end of the pressure plate and the second rotating plate, and a first return spring is provided at the bottom of the pressure block. A connecting rod is provided inside the first return spring, and a bottom block is provided at the bottom of the connecting rod.

[0010] Furthermore, the anti-tilt mechanism further includes a driving gear and a support rod. The inner sides of the first side rack and the second side rack are both provided with a cog structure. A driving gear is provided in the middle of the inner sides opposite to the cog structures of the first side rack and the second side rack. A support rod is vertically provided in the middle of the inner side of the driving gear, and the top of the support rod is connected to the motor body.

[0011] Furthermore, the second guide rod, the second rotating rod, and the second rotating plate have the same installation specifications as the first guide rod, the first rotating rod, and the first rotating plate, and the pressure plate is composed of a transverse plate and an L-shaped plate.

[0012] Furthermore, the structures among the first rotating rod, the first rotating plate, the second rotating plate, and the second rotating rod are all V-shaped structures.

[0013] Furthermore, the cooling structure includes a receiving water pipe, a water tank, a water pump body, a water spray pipe, a water diversion cavity box, a retaining plate, and a water delivery pipe. One end of the motor body is connected to the water pump body. The water pump body does not work when the motor body rotates forward, and the water pump body works when the motor body reverses. A water delivery pipe is provided on one side of the water pump body, and the other end of the water delivery pipe is connected to the water tank. A receiving water pipe is provided on the top of the water tank, and a water diversion cavity box is provided at one end of the receiving water pipe. A retaining plate is provided at the connection between the water diversion cavity box and the upper chassis, and a water spray pipe is provided at the bottom of the water diversion cavity box. The water spray pipe structure is an L-shaped structure, and the center point of the water spray pipe outlet port is on the same straight line as the outer surface of the extrusion die at the bottom end of the drive box.

[0014] Furthermore, the automatic feeding mechanism includes an upper guide rod, a rotating shaft, a push rod, an adapter plate, and a second return spring. The upper guide rod is provided at the bottom of the pressure plate, and a push rod is provided above the front end of the bottom of the upper guide rod. A rotating shaft is provided through the middle of the outer side of the push rod, and adapter plates are provided on both sides of the rotating shaft. A second return spring is provided at the bottom of the push rod away from the upper guide rod, and the end face of the push rod away from the upper guide rod is parallel to the bottom press and the aluminum alloy material placement position between the extrusion die at the bottom of the drive box.

[0015] Furthermore, the structure of the push rod is a V-shaped structure, and the structure of the part of the push rod close to the upper guide rod is an L-shaped structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a motor to drive the active gear to rotate, driving the racks on both sides to move relative to each other, so that the V-shaped rotating rod and the matching rotating plate drive the pressure plate to press down. The pressure block contacts both sides of the profile, the first return spring is compressed, and the connecting rod and the bottom block support and guide. During extrusion, the pressure plate always presses both sides of the profile to prevent it from tilting, ensuring the stability of the profile during the extrusion process and improving the molding quality. 2. The present invention uses a water pump to work when the motor is reversed, pumping water out of the water tank, which flows into the water diversion chamber through the water delivery pipe and the receiving water pipe, and then is sprayed out from the water spray pipe. The spray port of the water spray pipe is in a straight line with the surface of the extrusion die. The water can be sprayed onto the die surface, taking away the heat generated by extrusion, thereby cooling the die and extending the service life of the die. 3. This invention uses a motor to reverse and move the pressure plate upward, while the upper guide rod drives the push rod to rotate about its axis. The push rod has a V-shaped structure with one end L-shaped, which is located away from the upper guide rod. The second return spring then returns to its original position, allowing the profile to roll down along the guide plate. This process enables automated feeding, improving production efficiency and reducing manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the variable-section aluminum alloy profile hot extrusion device of the present invention; Figure 2 This is an enlarged schematic diagram of a part a of the anti-tilt mechanism of the present invention; Figure 3 This is an enlarged schematic diagram of part b of the automatic feeding mechanism of the present invention; Figure 4 This is a schematic structural diagram of the variable-section aluminum alloy profile hot extrusion device from another perspective of the present invention; Figure 5 This is an enlarged schematic diagram of a part c of the anti-tilt mechanism of the present invention; Figure 6 This is a partial enlarged schematic diagram of the automatic feeding mechanism of the present invention; Figure 7 This is another structural diagram of the variable-section aluminum alloy profile hot extrusion device of the present invention from another perspective; Figure 8 This is an enlarged schematic diagram of a part e of the automatic feeding mechanism of the present invention.

[0018] In the figure: 1. upper chassis; 2. housing; 3. drive box; 4. motor body; 5. receiving water pipe; 6. water tank; 7. water pump body; 8. peripheral frame; 9. first return spring; 10. base; 11. pressure plate; 12. guide plate; 13. water spray pipe; 14. water diversion chamber box; 15. retaining plate; 16. bottom press; 17. water delivery pipe; 18. first guide rod; 19. first rotating rod; 20. first matching rotating plate; 21. pressure block; 22. connecting rod; 23. bottom block; 24. rotating shaft; 25. upper guide rod; 26. adapter plate; 27. push rod; 28. driving gear; 29. first side rack; 30. second side rack; 31. support rod; 32. second rotating rod; 33. second guide rod; 34. second matching rotating plate; 35. second return spring. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1-8 As shown, a variable-section aluminum alloy profile hot extrusion device includes: an upper chassis 1, an anti-tilt mechanism, a cooling mechanism, and an automatic feeding mechanism. A housing 2 is provided inside the upper chassis 1, a drive box 3 is provided in the middle of the inner side of the housing 2, and an extrusion die is provided at the bottom of the drive box 3. An external frame 8 is provided outside the upper chassis 1, a base 10 is provided at the bottom end of the external frame 8, a bottom press 16 is provided on the top of the base 10, and a guide plate 12 is provided in the middle of one side of the outer side of the base 10, which is tilted downward. The anti-tilt mechanism is used to prevent the aluminum alloy profile from tilting on both sides during the extrusion process; The cooling mechanism is used to cool the outside of the extrusion die at the bottom of the drive box 3; The automatic feeding mechanism is used to output the extruded aluminum alloy profiles.

[0021] The anti-tilt mechanism includes a motor body 4, a pressure plate 11, a first guide rod 18, a first rotating rod 19, a first matching rotating plate 20, a pressure block 21, a connecting rod 22, and a bottom block 23. A first side rack 29 is provided transversely through the through hole on one side of the external frame 8. One end of the first side rack 29 is connected to the first guide rod 18. The front end of the first guide rod 18 is an L-shaped portion. The front end of the L-shaped portion of the first guide rod 18 is rotatably provided with the first rotating rod 19. One end of the first rotating rod 19 is fixedly provided with the first matching rotating plate 20. A pressure plate 11 is provided at the bottom of the first matching rotating plate 20. A pressure block 21 is provided at the bottom of the connection between the rear end of the pressure plate 11 and the first matching rotating plate 20. A first return spring 9 is provided at the bottom of the pressure block 21. The connecting rod 22 is provided inside the first return spring 9, and the bottom of the connecting rod 22 is provided with a bottom block 23. The anti-tilt mechanism also includes an external frame 8, a second lateral rack 30, a second guide rod 33, a second rotating rod 32, and a second rotating plate 34. A through hole is provided on the other side of the external frame 8, and a second lateral rack 30 is provided laterally inside the through hole on the other side of the external frame 8. One end of the second lateral rack 30 is provided with a second guide rod 33, and the second rotating rod 32 is provided for external rotation of the second guide rod 33. The second rotating plate 34 is provided at the bottom of the back side of the second rotating rod 32, and a pressure plate 11 is provided at the bottom of the second rotating plate 34. A pressure block 21 is provided at the bottom of the connection between the rear end of the pressure plate 11 and the second rotating plate 34. A first return spring 9 is provided at the bottom of the pressure block 21, and a connecting rod 22 is provided inside the first return spring 9, and a bottom block 23 is provided at the bottom of the connecting rod 22. The anti-tilt mechanism further includes a driving gear 28 and a support rod 31. The inner sides of the first side rack 29 and the second side rack 30 are both provided with a cog structure. The driving gear 28 is provided in the middle of the inner side opposite to the cog structure of the first side rack 29 and the second side rack 30. A support rod 31 is vertically provided in the middle of the inner side of the driving gear 28, and the top of the support rod 31 is connected to the motor body 4.

[0022] Otherwise, when the motor body 4 rotates forward, its power is directly transmitted to the support rod 31, driving the driving gear 28 to rotate. The meshing transmission of the driving gear 28 with the first side rack 29 and the second side rack 30 causes the racks on both sides to move relative to each other. The movement of the first side rack 29 drives the first guide rod 18. Due to the L-shaped design of the front end of the first guide rod 18, the first rotating rod 19 rotates around the connection point between it and the L-shaped portion under the drive of the guide rod. The rotation of the first rotating rod 19 is directly transmitted to the first rotating plate 20. The first rotating plate 20 is fixedly connected to the pressure plate 11, thereby driving the pressure plate 11 to press down. Similarly, the movement of the second side rack 30 causes the second guide rod 33, the second rotating rod 32 and the second rotating plate 34 to work together to drive the pressure plate 11 on the other side to press down. In order to adapt to aluminum alloy profiles of different thicknesses, improvements have been made to the design of the first return spring 9 and the connecting rod 22. The connecting rod 22 adopts an adjustable length structure. Through a threaded connection, the extended length of the connecting rod 22 can be pre-adjusted according to the thickness of the profile. When the pressure block 21 contacts the surface of the profile, the first return spring 9 begins to compress, and its compression amount is adaptively adjusted according to the actual thickness and hardness of the profile. If the profile is thicker, the first return spring 9 is compressed more, and the pressure of the pressure block 21 on the profile is also increased accordingly; conversely, if the profile is thinner, the first return spring 9 is compressed less, and the pressure is also reduced accordingly; During the meshing process between the driving gear 28 and the first side rack 29 and the second side rack 30, in order to reduce wear and improve transmission efficiency, high-precision gear processing technology and high-quality materials are adopted. At the same time, a guide groove is set on the moving path of the rack to ensure that the rack will not deviate during the movement process, ensuring that the pressure plate 11 can be accurately pressed down to both sides of the profile.

[0023] like Figures 1-8 As shown, a variable-section aluminum alloy profile hot extrusion device, the cooling structure includes a receiving water pipe 5, a water tank 6, a water pump body 7, a water spray pipe 13, a water diversion cavity box 14, a retaining plate 15, and a water delivery pipe 17. One end of the motor body 4 is connected to the water pump body 7. When the motor body 4 rotates forward, the water pump body 7 does not work. When the motor body 4 rotates reversely, the water pump body 7 works. A water delivery pipe 17 is provided on one side of the water pump body 7. The other end of the water delivery pipe 17 is connected to the water tank 6. A receiving water pipe 5 is provided on the top of the water tank 6. One end of the receiving water pipe 5 is provided with a water diversion cavity box 14. A retaining plate 15 is provided at the connection between the water diversion cavity box 14 and the upper chassis 1. A water spray pipe 13 is provided at the bottom of the water diversion cavity box 14. The water spray pipe 13 structure is an L-shaped structure. The center point of the spray port of the water spray pipe 13 is on the same straight line as the surface of the extrusion die at the bottom end of the drive box 3: Otherwise, when the motor body 4 reverses, the water pump body 7 starts working, and the reverse signal of the motor body 4 is transmitted to the control module of the water pump body 7 through the circuit, starting the water pump. Under the suction force of the water pump body 7, the water in the water tank 6 enters the water pump through the water delivery pipe 17. The water delivery pipe 17 adopts a pipe with a larger inner diameter to reduce water flow resistance and increase the water delivery speed; After the water flows out of the water pump body 7, it enters the water diversion chamber 14 through the receiving water pipe 5. In order to make the water more evenly distributed in the water diversion chamber 14, a diverter plate is set inside the water diversion chamber 14. The diverter plate evenly guides the water to the inlets of each water spray pipe 13. The number of water spray pipes 13 has been increased to multiple, and an adjustable nozzle angle design has been adopted. By adjusting the nozzle angle, the water can more comprehensively cover the extrusion die surface at the bottom of the drive box 3. In order to ensure the stability of the cooling effect, a water temperature sensor and a water level sensor are set in the water tank 6. The water temperature sensor monitors the temperature of the water in the water tank 6 in real time. When the water temperature exceeds the set value, the system will automatically prompt that the water in the water tank needs to be replaced. The water level sensor monitors the water level in the water tank 6. When the water level is too low, the system will sound an alarm to remind the operator to add water in time. In addition, in order to improve the cooling efficiency, a layer of heat insulation material is wrapped around the outside of the water spray pipe 13 to reduce the heat loss of water during transportation. At the same time, heat dissipation fins are set on the surface of the extrusion mold to increase the contact area between the mold and water, further improving the heat dissipation effect.

[0024] like Figures 1-8 As shown, a variable-section aluminum alloy profile hot extrusion device, the automatic feeding mechanism includes an upper guide rod 25, a rotating shaft 24, a push rod 27, an adapter plate 26, and a second return spring 35. The upper guide rod 25 is provided at the bottom of the pressure plate 11, and a push rod 27 is provided above the front end of the bottom of the upper guide rod 25. The middle of the outer side of the push rod 27 is penetrated by the rotating shaft 24, and adapter plates 26 are provided on both sides of the rotating shaft 24. The bottom of the push rod 27 away from the upper guide rod 25 is provided with a second return spring 35. The end surface of the push rod 27 away from the upper guide rod 25 is parallel to the bottom press 16 and the aluminum alloy material between the bottom extrusion die of the drive box 3. Otherwise, when the motor body 4 reverses and the pressing plate 11 moves upward, the upper guide rod 25 at the bottom of the pressing plate 11 moves upward together with the pressing plate 11. The movement of the upper guide rod 25 is transmitted to the push rod 27 through a mechanical connection, and the push rod 27 rotates around the rotating shaft 24. In this process, in order to achieve more precise control, an angle sensor is installed at the rotating shaft 24. The angle sensor monitors the rotation angle of the push rod 27 in real time and feeds the data back to the control system. The control system accurately controls the reversal speed and time of the motor body 4 according to the preset parameters and the feedback angle data. If the rotation angle of the push rod 27 does not reach the preset value, the control system will appropriately extend the reversal time of the motor body 4 to ensure that the push rod 27 can accurately push the extruded aluminum alloy profile. In order to improve the feeding efficiency, an anti-slip coating is provided on the surface of the push rod 27. The anti-slip coating increases the friction between the push rod 27 and the aluminum alloy profile, so that the push rod 27 can push the profile more stably. At the same time, multiple guide wheels are provided on the guide plate 12. The surface of the guide wheels is made of smooth material, which reduces the resistance of the profile when rolling on the guide plate 12. In addition, in order to realize automated production, a material collecting device is set at the end of the guide plate 12. When the aluminum alloy profile rolls from the guide plate 12 to the material collecting device, the material collecting device will automatically classify and organize the profile. The material collecting device detects the length and shape of the profile through sensors, and places the profile in different positions according to preset rules to facilitate subsequent processing and handling.

[0025] Working principle: When using the variable-section aluminum alloy profile hot extrusion device, before starting work, the aluminum alloy raw material is placed at a designated position between the bottom press 16 on the top of the base 10 and the extrusion die at the bottom of the drive box 3. At this time, the entire device is in a ready-to-work state, and the various components are not started; The motor body 4 starts to rotate forward, driving the support rod 31 to rotate, and then the driving gear 28 rotates. Since the driving gear 28 is engaged with the inner teeth of the first side rack 29 and the second side rack 30, the rotation of the driving gear 28 drives the first side rack 29 and the second side rack 30 to move relative to each other; As for the first side rack 29, the first guide rod 18 connected to one end thereof moves accordingly, because the front end of the first guide rod 18 is an L-shaped portion, and the front end of the L-shaped portion is rotatably provided with a first rotating rod 19, and the first rotating rod 19 drives the first rotating plate 20 fixedly connected thereto to rotate; As for the second side rack 30, the second guide rod 33 at one end thereof moves, causing the second rotating rod 32 provided for external rotation to rotate, and the second rotating rod 32 drives the second rotating plate 34 to rotate; Since the first rotating rod 19, the first rotating plate 20, the second rotating plate 34 and the second rotating rod 32 are all V-shaped structures, during the rotation process, the first rotating plate 20 and the second rotating plate 34 drive the connected pressure plate 11 to press down. The pressure plate 11 is composed of a transverse plate and an L-shaped plate. The pressure block 21 at the bottom thereof contacts both sides of the surface of the aluminum alloy profile. At the same time, the first return spring 9 at the bottom of the pressure block 21 is compressed, and the connecting rod 22 and the bottom block 23 play a supporting and guiding role to ensure a smooth downward pressing process. In this way, during the extrusion process of the aluminum alloy profile, the pressure plate 11 always presses both sides of the profile to prevent it from tilting. When the motor body 4 is reversed, the water pump body 7 starts to work, and the water in the water tank 6 is pumped out by the water pump body 7 through the water delivery pipe 17. After passing through the motor body 4, the water flows into the water diversion chamber box 14 through the receiving water pipe 5. The water diversion chamber box 14 is fixed to the upper chassis 1 through the retaining plate 15. After the water is collected in the water diversion chamber box 14, it is sprayed out through the water spray pipe 13 at the bottom. The water spray pipe 13 is an L-shaped structure, and the center point of its spray port is in the same straight line as the surface of the extrusion die at the bottom end of the drive box 3, so that the sprayed water can be sprayed onto the surface of the extrusion die, taking away the heat generated by the die during the extrusion process, thereby achieving a cooling effect; When the motor body 4 is reversed and the pressure plate 11 moves up and away from the surface of the aluminum alloy profile, the upper guide rod 25 at the bottom of the pressure plate 11 moves upward accordingly. During the movement of the upper guide rod 25, it will drive the push rod 27 cooperating therewith to rotate around the rotating shaft 24. The structure of the push rod 27 is V-shaped, and the part near the side of the upper guide rod 25 is L-shaped. During the rotation process, the push rod 27 away from the end of the upper guide rod 25 will push the extruded aluminum alloy profile. Since the end surface of the push rod 27 away from the end of the upper guide rod 25 is parallel to the bottom press 16 and the aluminum alloy material placement position between the extrusion die at the bottom of the drive box 3, the profile can be pushed smoothly. At the same time, the second return spring 35 at the bottom of the side of the push rod 27 away from the upper guide rod 25 will be deformed when the push rod 27 rotates. When the push rod 27 completes the pushing action, it returns to its original position under the elastic force of the second return spring 35, and the pushed aluminum alloy profile rolls down along the guide plate 12 to the remaining area, completing the automatic feeding process.

[0026] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A hot extrusion device for variable-section aluminum alloy profiles, comprising: An upper chassis (1), an anti-tilt mechanism, a cooling mechanism and an automatic feeding mechanism, characterized in that a housing (2) is provided inside the upper chassis (1), a drive box (3) is provided in the middle of the inner side of the housing (2), an extrusion die is provided at the bottom of the drive box (3), an external frame (8) is provided outside the upper chassis (1), a base (10) is provided at the bottom end of the external frame (8), a bottom press (16) is provided at the top of the base (10), and a guide plate (12) is provided in the middle of one side of the outer side of the base (10) so as to be tilted downward. The anti-tilt mechanism is used to prevent the aluminum alloy profile from tilting on both sides during the extrusion process; The cooling mechanism is used to cool the exterior of the extrusion die at the bottom of the drive box (3); The automatic feeding mechanism is used to feed out the extruded aluminum alloy profiles.

2. The variable cross-section aluminum alloy profile hot extrusion device according to claim 1, characterized in that: The anti-tilt mechanism comprises a motor body (4), a pressure plate (11), a first guide rod (18), a first rotating rod (19), a first rotating plate (20), a pressure block (21), a connecting rod (22), and a bottom block (23). A first side rack (29) is provided transversely through the through hole on one side of the external frame (8). One end of the first side rack (29) is connected to the first guide rod (18). The front end of the first guide rod (18) is an L-shaped portion. The first guide rod (18) L A first rotating rod (19) is rotatably provided at the front end of the shaped portion, a first rotating plate (20) is fixedly provided at one end of the first rotating rod (19), a pressing plate (11) is provided at the bottom of the first rotating plate (20), a pressing block (21) is provided at the bottom of the connection between the rear end of the pressing plate (11) and the first rotating plate (20), a first return spring (9) is provided at the bottom of the pressing block (21), a connecting rod (22) is provided inside the first return spring (9), and a bottom block (23) is provided at the bottom of the connecting rod (22).

3. The variable cross-section aluminum alloy profile hot extrusion device according to claim 1, characterized in that: The anti-tilt mechanism further comprises an external frame (8), a second side rack (30), a second guide rod (33), a second rotating rod (32), and a second rotating plate (34). A through hole is provided on the other side of the external frame (8), and a second side rack (30) is provided in a transverse direction inside the through hole on the other side of the external frame (8). A second guide rod (33) is provided at one end of the second side rack (30), and a second rotating rod (32) is provided for rotating outside the second guide rod (33). A second rotating plate (34) is provided at the bottom of the back of the second rotating rod (32), and a pressure plate (11) is provided at the bottom of the second rotating plate (34). A pressure block (21) is provided at the bottom of the connection between the rear end of the pressure plate (11) and the second rotating plate (34). A first return spring (9) is provided at the bottom of the pressure block (21), and a connecting rod (22) is provided inside the first return spring (9). A bottom block (23) is provided at the bottom of the connecting rod (22).

4. The variable cross-section aluminum alloy profile hot extrusion device according to claim 2, characterized in that: The anti-tilt mechanism further comprises a driving gear (28) and a support rod (31); the inner sides of the first side rack (29) and the second side rack (30) are both provided with a tooth structure; the driving gear (28) is provided at the middle of the inner sides opposite to the tooth structures of the first side rack (29) and the second side rack (30); a support rod (31) is vertically provided at the middle of the inner side of the driving gear (28); and the top of the support rod (31) is connected to the motor body (4).

5. The variable cross-section aluminum alloy profile hot extrusion device according to claim 3, characterized in that: The second guide rod (33), the second rotating rod (32), and the second rotating plate (34) have the same installation specifications as the first guide rod (18), the first rotating rod (19), and the first rotating plate (20), and the pressing plate (11) is composed of a transverse plate and an L-shaped plate.

6. The variable cross-section aluminum alloy profile hot extrusion device according to claim 2, characterized in that: The structures of the first rotating rod (19), the first rotating plate (20), the second rotating plate (34), and the second rotating rod (32) are all V-shaped structures.

7. The variable cross-section aluminum alloy profile hot extrusion device according to claim 2, characterized in that: The cooling structure comprises a receiving water pipe (5), a water tank (6), a water pump body (7), a water spray pipe (13), a water diversion chamber box (14), a retaining plate (15), and a water delivery pipe (17). One end of the motor body (4) is connected to the water pump body (7). When the motor body (4) rotates forward, the water pump body (7) does not work. When the motor body (4) rotates reversely, the water pump body (7) works. A water delivery pipe (17) is provided on one side of the water pump body (7). The other end of the water delivery pipe (17) The water tank (6) is connected to each other, and a receiving water pipe (5) is provided on the top of the water tank (6), and a water diversion chamber box (14) is provided at one end of the receiving water pipe (5). A retaining plate (15) is provided at the connection between the water diversion chamber box (14) and the upper chassis (1). A water spray pipe (13) is provided at the bottom of the water diversion chamber box (14), and the water spray pipe (13) is an L-shaped structure. The center point of the spray port of the water spray pipe (13) is on the same straight line as the outer surface of the extrusion die at the bottom end of the drive box (3).

8. The variable cross-section aluminum alloy profile hot extrusion device according to claim 2, characterized in that: The automatic feeding mechanism comprises an upper guide rod (25), a rotating shaft (24), a push rod (27), an adapter plate (26), and a second return spring (35). The upper guide rod (25) is provided at the bottom of the pressure plate (11), and a push rod (27) is provided above the front end of the bottom of the upper guide rod (25). The middle of the outer side of the push rod (27) is penetrated by a rotating shaft (24), and adapter plates (26) are provided on both sides of the rotating shaft (24). The bottom of the push rod (27) away from the upper guide rod (25) is provided with a second return spring (35). The end surface of the push rod (27) away from the upper guide rod (25) is parallel to the aluminum alloy material placement position between the bottom press (16) and the bottom extrusion die of the drive box (3).

9. The variable cross-section aluminum alloy profile hot extrusion device according to claim 8, characterized in that: The push rod (27) has a V-shaped structure, and the part of the push rod (27) close to the upper guide rod (25) has an L-shaped structure.

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