A semi-closed tubular aluminum profile hot extrusion die

Abstract

The application discloses a semi-closed tubular aluminum profile hot extrusion die, which comprises a base, a lower die movably arranged on the top of the base, four groups of hydraulic cylinders fixedly arranged on the top of the base in a square shape, a top plate fixedly arranged on the telescopic ends of the four groups of hydraulic cylinders, a connecting disc arranged on the top of the top plate, a threaded column threadedly connected to the bottom of the connecting disc, an upper die assembly fixedly arranged on the bottom of the threaded column, four groups of cavities evenly arranged on the top of the lower die, two groups of vertical plates fixedly arranged on the top of the base in parallel, and electric telescopic rods fixedly connected to the opposite sides of the two groups of vertical plates. In the application, the upper and lower dies can be replaced according to the shape and specification of the tubular aluminum profile to be extruded, the efficiency of the aluminum profile cooling and forming is better during hot extrusion, and the aluminum material overflowing on the upper surface of the lower die is convenient to clean.

Description

Technical Field

[0001] This invention relates to the field of extrusion die technology, specifically to a semi-enclosed tubular aluminum profile hot extrusion die. Background Technology

[0002] An extrusion die is a type of mechanical processing die used to extrude profiles to achieve a specific shape. Extrusion is a means of profile forming. It involves designing and matching the appropriate die according to the cross-section of the profile product, and then using an extruder to extrude the heated profile material from the die. After that, the material is cooled and shaped. At present, as people's requirements for the shape of aluminum profiles become more complex and diverse, traditional processing methods can no longer meet the current needs of aluminum profile processing. Therefore, an extrusion die is needed for processing.

[0003] However, due to the diverse requirements for aluminum profile shapes, it is necessary to frequently replace the upper and lower sets of dies that match the set aluminum profile shape. In the existing overall structure of aluminum profile extrusion dies, the upper and lower sets of dies are mostly fixedly assembled with the extrusion equipment or locked by multiple sets of screws, making overall replacement inconvenient and difficult to meet the diverse processing requirements of the overall structure of the extrusion die. Therefore, it does not meet the existing needs. To address this, we propose a semi-enclosed tubular aluminum profile hot extrusion die.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the present invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a semi-enclosed tubular aluminum profile hot extrusion die to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a semi-enclosed tubular aluminum profile hot extrusion die, comprising a base, a lower die movably mounted on the top of the base, four sets of hydraulic cylinders arranged in a square pattern fixedly mounted on the top of the base, the four sets of hydraulic cylinders being evenly distributed around the lower die, a top plate fixedly mounted on the telescopic ends of the four sets of hydraulic cylinders, a connecting disc mounted on the top of the top plate, the bottom of the connecting disc penetrating the interior of the top plate, a threaded post threadedly connected to the bottom of the connecting disc, an upper module assembly fixedly mounted on the bottom of the threaded post, and four openings on the top of the lower die. The base has a set of evenly arranged cavities. Two sets of parallel upright plates are fixedly installed on the top of the base. Electric telescopic rods are fixedly connected to the opposite sides of the two sets of upright plates. Limiting plates are fixedly connected to the telescopic ends of the two sets of electric telescopic rods. Two sets of L-shaped grooves with front-to-back mirror arrangement are opened on the top of the two sets of limiting plates. Arc plates are movably connected to both sides of the lower mold. Two sets of integrated plates with front-to-back arrangement are fixedly installed on the opposite sides of the two sets of arc plates. L-shaped interlocking strips are fixedly installed on the outer surfaces of the four sets of integrated plates, and the four sets of L-shaped interlocking strips are slidably connected to the space inside the four sets of L-shaped grooves.

[0007] Preferably, the lower mold has four sets of evenly arranged annular grooves inside, and the four sets of annular grooves cover the four sets of cavities inside. The lower mold also has four sets of elongated circular grooves arranged in annular shape inside, and the four sets of elongated circular grooves are interconnected with the four sets of annular grooves. The four sets of elongated circular grooves and the four sets of annular grooves are arranged at intervals. A cooling mechanism is fixedly installed on the top of the base. The cooling mechanism includes two sets of conduits, which are arranged one above the other. The front of the two sets of conduits extends into the interior of the two rear annular grooves.

[0008] Preferably, the refrigeration mechanism further includes a refrigeration housing, a shelf, a circulation pump, a first telescopic pipe, a second telescopic pipe, and a cover. The shelf is fixedly installed on one side of the refrigeration housing. The circulation pump is installed on the top of the shelf, and its input end extends into the interior of the refrigeration housing. The first telescopic pipe is fixedly connected to the output end of the circulation pump, and its front side is fixedly connected to the tail end of an uppermost set of conduits via a flange. The second telescopic pipe is fixedly connected to the front side of the refrigeration housing, and its front side is fixedly connected to the tail end of a lowermost set of conduits via a flange. The cover is fixedly installed on the top of the refrigeration housing.

[0009] Preferably, the bottom of the lower mold is provided with a concealed groove, the top of the lower mold is provided with a receiving groove, and one end of the receiving groove is connected to the top of the concealed groove. The top of the base is fixedly connected with a drive motor, and the drive motor is located inside the space of the concealed groove.

[0010] Preferably, the output end of the drive motor is fixedly connected to a rotating shaft, the outer surface of the rotating shaft is fitted with a cylinder, one side of the cylinder is threaded with a fastening screw, and one end of the fastening screw penetrates the interior of the rotating shaft. The top of the cylinder is fixedly connected to a storage-type electric push rod, the telescopic end of the storage-type electric push rod is fixedly connected to a cylinder, the outer surface of the cylinder is fixedly mounted with a semi-arc plate by screws, and one side of the semi-arc plate is fixedly mounted with an L-shaped conical shovel.

[0011] Preferably, the L-shaped cone shovel has a slot on its front side, a spring is fixedly connected to the rear wall of the slot, a limit block is fixedly connected to the front side of the spring, and the limit block is slidably connected to the inner wall of the slot. A cleaning shovel is slidably sleeved on the outer surface of the L-shaped cone shovel, and the cleaning shovel is located on the side of the limit block near the semi-circular plate.

[0012] Preferably, the bottom of both sets of arc plates is fixedly connected to multiple sets of pulleys, and the top of the lower mold is provided with two sets of positioning holes arranged in a front-to-back manner.

[0013] Preferably, the upper module assembly includes an upper mold, positioning pins, and hot extrusion die cores. The upper mold is fixedly installed at the bottom of the threaded pins. There are two sets of positioning pins, both of which are fixedly installed at the bottom of the upper mold, and the two sets of positioning pins are respectively located above two sets of positioning holes. There are four sets of hot extrusion die cores, all of which are fixedly installed at the bottom of the upper mold, and the four sets of hot extrusion die cores correspond one-to-one with four sets of cavities.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In this invention, the upper and lower dies can be replaced according to the shape and specifications of the tubular aluminum profile to be extruded. The lower die is placed at the center of the upper surface of the base. Then, two sets of limiting components consisting of arc plates, integral plates and L-shaped interlocking strips are selected to match the model of the lower die. The limiting components are combined with the limiting plates by interlocking the L-shaped interlocking strips and L-shaped grooves. Then, by synchronously operating two sets of electric telescopic rods, the two are made to extend outward in sync, so as to generate a pushing force in opposite directions on the two sets of limiting plates and limiting components, so that the two sets of arc plates are respectively attached to the two sides of the lower die, thereby achieving the purpose of limiting the position of the lower die on the base.

[0016] 2. In this invention, by operating a circulating pump, the cooled liquid that has undergone cold treatment inside the refrigeration unit is drawn out and transported to the uppermost set of conduits through the first telescopic pipe. Then, it flows along the space inside the four sets of annular grooves and four sets of elongated circular grooves, so that the cold air generated by the cool liquid can act on the tubular aluminum profile inside the cavity space through the inner wall of the annular groove. The cooled liquid circulates around the four sets of cavities to achieve the purpose of cooling the tubular aluminum profile after hot extrusion, thereby accelerating the shaping of the tubular aluminum profile.

[0017] 3. In this invention, after the tubular aluminum profile is hot-extruded, an electric push rod extends upward by a set distance. The bottom of the L-shaped cone shovel is adjusted to be at the same height as the top surface of the lower mold by the cylinder and the semi-arc plate. Then, in conjunction with the drive motor, the drive motor drives the rotating shaft to rotate in a set direction, thereby driving the cylinder, the semi-arc plate and the L-shaped cone shovel to rotate together. This causes the L-shaped cone shovel to rotate and shovel along the upper surface of the lower mold, so as to remove the aluminum material that overflows into the mold during the extrusion of the tubular aluminum profile in a timely manner.

[0018] 4. In this invention, by pressing the limiting block, the limiting block retracts back into the space of the slot along with the spring. Then, by pushing the cleaning shovel back and forth along the outer surface of the L-shaped cone shovel, the aluminum material bonded to the outer surface of the L-shaped cone shovel is removed, so as to effectively ensure the effect of the L-shaped cone shovel in the next use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram showing the disassembled structure of the limiting plate and the L-shaped interlocking strip of the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the mold of the present invention;

[0022] Figure 4 This is a schematic diagram of the refrigeration mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the installation structure of the cylinder, semi-circular plate and L-shaped conical shovel of the present invention;

[0024] Figure 6 This is a schematic diagram showing the disassembled structure of the L-shaped conical shovel and the cleaning shovel of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the base, lower mold, and refrigeration casing of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the module components of the present invention.

[0027] In the diagram: 1. Base; 2. Lower mold; 3. Hydraulic cylinder; 4. Top plate; 5. Connecting disc; 6. Threaded column; 7. Upper module assembly; 8. Cavity; 9. Upright plate; 10. Electric telescopic rod; 11. Limiting plate; 12. L-shaped groove; 13. Arc plate; 14. Integrated plate; 15. L-shaped interlocking strip; 16. Annular groove; 17. Long circular groove; 18. Refrigeration mechanism; 19. Pipe; 20. Refrigeration casing; 21. Shelf; 22. Circulating pump; 23. First telescopic pipe; 24. Second telescopic pipe; 25. Box cover; 26. Concealed groove; 27. Storage groove; 28. Drive motor; 29. ​​Rotating shaft; 30. Cylinder; 31. Energy-saving electric push rod; 32. Column; 33. Semi-arc plate; 34. L-shaped cone shovel; 35. Spring; 36. Limiting block; 37. Cleaning shovel; 38. Pulley; 39. Positioning hole; 40. Upper mold; 41. Positioning post; 42. Hot extrusion die core. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Please see Figures 1-8 One embodiment provided by the present invention:

[0032] A semi-enclosed tubular aluminum profile hot extrusion die includes a base 1, a lower die 2 movably mounted on the top of the base 1, four sets of hydraulic cylinders 3 arranged in a square pattern fixedly mounted on the top of the base 1, and the four sets of hydraulic cylinders 3 evenly distributed around the lower die 2. A top plate 4 is fixedly mounted on the telescopic ends of the four sets of hydraulic cylinders 3. A connecting disc 5 is mounted on the top of the top plate 4, and the bottom of the connecting disc 5 penetrates the interior of the top plate 4. A threaded post 6 is threadedly connected to the bottom of the connecting disc 5, and an upper module assembly 7 is fixedly mounted on the bottom of the threaded post 6. Four evenly arranged cavities 8 are opened on the top of the lower die 2. The top of the base 1... The lower mold 2 has two sets of upright plates 9 arranged side by side. Electric telescopic rods 10 are fixedly connected to the opposite side of each set of upright plates 9. Limiting plates 11 are fixedly connected to the telescopic ends of each set of electric telescopic rods 10. Two sets of L-shaped grooves 12 arranged in a front-to-back mirror arrangement are opened on the top of each set of limiting plates 11. Arc plates 13 are movably connected to both sides of the lower mold 2. Two sets of integrated plates 14 arranged in a front-to-back manner are fixedly installed on the opposite side of each set of arc plates 13. L-shaped interlocking strips 15 are fixedly installed on the outer surface of each of the four sets of integrated plates 14, and the four sets of L-shaped interlocking strips 15 are slidably connected to the space inside the four sets of L-shaped grooves 12.

[0033] In use, by synchronously operating four sets of hydraulic cylinders 3, they are forced to retract downwards, generating a downward pulling force on the top plate 4, causing the connecting disc 5, threaded column 6, and upper module assembly 7 to move downwards, so that the bottom of the upper module assembly 7 extends into the space of the four sets of cavities 8 opened at the top of the lower mold 2. The cavities 8 are set as semi-closed tubes. At this time, the aluminum material inside the cavity 8 is squeezed, so that the aluminum material is adjusted into the set tubular shape.

[0034] Specifically, in this extrusion die, the upper and lower sets of dies can be replaced according to the shape and specifications of the tubular aluminum profile to be extruded. The threaded column 6 and the connecting disc 5 are connected by a threaded engagement, thus they are detachable. The lower die 2 of the specified model is placed at the center of the base 1, and the four cavities 8 are respectively matched with the positions of the upper module assembly 7. Then, by selecting two sets of limiting components consisting of an arc plate 13, an integral plate 14, and an L-shaped fitting strip 15 that match the model of the lower die 2, and then aligning these limiting components with the limiting plate 11 to set the L-shaped groove 12. Directly above, it drives the entire limiting unit to move downward, causing the two sets of L-shaped interlocking strips 15 to be respectively fitted into the spaces of the two sets of L-shaped grooves 12. Then, by synchronously operating the two sets of electric telescopic rods 10, they are caused to extend outward in sync, thereby generating a pushing force on the two sets of limiting plates 11 in opposite directions. This causes the two sets of limiting units to move towards the location of the lower mold 2, so that the two sets of arc plates 13 are respectively attached to the two sides of the lower mold 2, thereby achieving the purpose of limiting the position of the lower mold 2 on the base 1. At the same time, the replacement of the lower mold 2 is easier to disassemble compared to the fixed assembly form.

[0035] The lower mold 2 has four sets of evenly arranged annular grooves 16 inside, each enclosing one of the four cavities 8. The lower mold 2 also has four sets of annularly arranged elongated circular grooves 17 inside, which are interconnected with the four sets of annular grooves 16, and are spaced apart from each other. A cooling mechanism 18 is fixedly installed on the top of the base 1. The cooling mechanism 18 includes two sets of conduits 19, arranged one above the other. The front ends of the two sets of conduits 19 extend into the interior of the two rearmost annular grooves 16. The cooling mechanism 18 also includes a cooling housing 20. The refrigerator includes a shelf 21, a circulation pump 22, a first telescopic pipe 23, a second telescopic pipe 24, and a cover 25. The shelf 21 is fixedly installed on one side of the refrigerator housing 20. The circulation pump 22 is installed on the top of the shelf 21, and the input end of the circulation pump 22 extends into the interior of the refrigerator housing 20. The first telescopic pipe 23 is fixedly connected to the output end of the circulation pump 22, and the front of the first telescopic pipe 23 is fixedly connected to the tail end of a set of upper conduits 19 through a flange. The second telescopic pipe 24 is fixedly connected to the front of the refrigerator housing 20, and the front of the second telescopic pipe 24 is fixedly connected to the tail end of a set of lower conduits 19 through a flange. The cover 25 is fixedly installed on the top of the refrigerator housing 20.

[0036] The design of the annular groove 16 facilitates the direct transfer of the temperature of the coolant flowing within its space to the aluminum material inside the cavity 8, thereby shortening the time required for the tubular aluminum profile to cool down after hot extrusion. The coolant inside the space is cooled by the refrigeration chamber 20, and then the circulating pump 22 is activated to draw the coolant from the space of the refrigeration chamber 20 and deliver it through the first telescopic pipe 23 to the upper set of conduits 19, and then into the space of one set of annular grooves 16. As the circulating pump 22 continues to operate, the coolant can flow along the space of the four sets of annular grooves 16 and the four sets of elongated circular grooves 17, so that the cold air generated by the coolant can act on the tubular aluminum profile inside the cavity 8 through the inner wall of the annular groove 16 to achieve the purpose of cooling it. Then the coolant flows back into the space of the refrigeration chamber 20 through another set of lower conduits 19 and the second telescopic pipe 24, thus achieving the purpose of circulation.

[0037] The placement plate 21 provides a relatively stable and suitable assembly site for the circulation pump 22. The two sets of telescopic tubes are themselves tensile, and their overall length can be changed accordingly when they are subjected to tension, thereby increasing the adaptability of this refrigeration mechanism 18 to different lower molds 2.

[0038] The bottom of the lower mold 2 is provided with a concealed groove 26, and the top of the lower mold 2 is provided with a storage groove 27. One end of the storage groove 27 is connected to the top of the concealed groove 26. The top of the base 1 is fixedly connected with a drive motor 28, and the drive motor 28 is located inside the space of the concealed groove 26. The output end of the drive motor 28 is fixedly connected with a rotating shaft 29. A cylinder 30 is sleeved on the outer surface of the rotating shaft 29. A fastening nail is threaded on one side of the cylinder 30, and one end of the fastening nail passes through the interior of the rotating shaft 29. A storage-type electric push rod 31 is fixedly connected to the top of the cylinder 30. A cylinder 32 is fixedly connected to the telescopic end of the storage-type electric push rod 31. A semi-arc plate 33 is fixedly installed on the outer surface of the cylinder 32 by screws. An L-shaped conical shovel 34 is fixedly installed on one side of the semi-arc plate 33.

[0039] The diameter of the concealed groove 26 is larger than that of the drive motor 28, providing ample assembly space for the drive motor 28. After the tubular aluminum profile is hot extruded and the upper module assembly 7 is separated from the lower mold 2, the electric push rod 31 is operated to extend upward by a set distance, which then drives the cylinder 32, the semi-arc plate 33 and the L-shaped cone shovel 34 to move upward together, so that the bottom of the L-shaped cone shovel 34 is at the same height as the top surface of the lower mold 2. Then, the drive motor 28 is operated to drive the rotating shaft 29 to rotate in a set direction, thereby driving the cylinder 32, the semi-arc plate 33 and the L-shaped cone shovel 34 to rotate together, so that the L-shaped cone shovel 34 rotates and shovels along the upper surface of the lower mold 2 to remove the aluminum material that overflows into the cavity 8 when the tubular aluminum profile is extruded.

[0040] Specifically, the cylinder 30 and the rotating shaft 29 are locked together by fastening screws. By removing the fastening screws, the cylinder 30 and the rotating shaft 29 can be disassembled, which facilitates the replacement and maintenance of the accumulator-type electric push rod 31. At the same time, the semi-arc plate 33 and the cylinder 32 are fastened together by screws. The two are also detachable, which facilitates the replacement of the L-shaped conical shovel 34 that has a notch or rolled edge.

[0041] The L-shaped cone shovel 34 has a slot on its front side. A spring 35 is fixedly connected to the rear wall of the slot. A limit block 36 is fixedly connected to the front side of the spring 35. The limit block 36 is slidably connected to the inner wall of the slot. A cleaning shovel 37 is slidably sleeved on the outer surface of the L-shaped cone shovel 34. The cleaning shovel 37 is located on the side of the limit block 36 near the semi-arc plate 33.

[0042] After removing excess aluminum material from the upper surface of the lower mold 2, the spring 35 is compressed and retracted inward by pressing the limiting block 36. At the same time, the limiting block 36 retracts back into the space of the slot. Then, the cleaning shovel 37 is pushed outward to clean the aluminum material adhering to the outer surface of the L-shaped cone shovel 34, so as not to affect the effect of the next use of the L-shaped cone shovel 34.

[0043] The bottom of each of the two sets of arc plates 13 is fixedly connected to multiple sets of pulleys 38. The top of the lower mold 2 is provided with two sets of positioning holes 39 arranged in a front-to-back manner. The upper module component 7 includes an upper mold 40, positioning pins 41 and hot extrusion mold cores 42. The upper mold 40 is fixedly installed at the bottom of the threaded pins 6. There are two sets of positioning pins 41, both of which are fixedly installed at the bottom of the upper mold 40. The two sets of positioning pins 41 are located above the two sets of positioning holes 39. There are four sets of hot extrusion mold cores 42, all of which are fixedly installed at the bottom of the upper mold 40. The four sets of hot extrusion mold cores 42 correspond one-to-one with the four sets of cavities 8.

[0044] The setting of pulley 38 can effectively prevent the bottom of the arc plate 13 from directly contacting the upper surface of the base 1, thereby preventing the upper surface of the base 1 from being subjected to friction caused by the movement of the arc plate 13. When the upper module component 7 is stacked downward with the lower mold 2, the four sets of hot extrusion mold cores 42 extend downward into the space of the four sets of cavities 8 respectively. At the same time, the two sets of positioning pins 41 can extend into the space of the two sets of positioning holes 39, thereby effectively preventing the cavity 8 from deforming due to excessive extrusion force.

[0045] Working principle: The lower mold 2 is placed at the center of the upper surface of the base 1. Then, the limiting assembly consisting of the arc plate 13, the integral plate 14, and the L-shaped interlocking strip 15 is combined with the limiting plate 11. By operating two sets of electric telescopic rods 10, they are extended outward, generating a pushing force in the opposite direction on the limiting plate 11 and the arc plate 13. This allows the two sets of limiting plates 11 to limit the position of the lower mold 2. Then, the upper mold 40, which matches the lower mold 2, is combined with the connecting disc 5 through the threaded column 6. Then, by operating four sets of hydraulic cylinders 3 simultaneously, it is caused to retract downward, generating a downward pulling force on the top plate 4. This causes the connecting disc 5, the threaded column 6, and the upper module assembly 7 to move downward, so that the bottom of the upper module assembly 7 extends into the space of the four cavities 8 opened at the top of the lower mold 2, thus compressing the aluminum material inside the cavity 8 space. The aluminum material is gradually adjusted into the set tubular shape. At this time, the cooling box 20 and the circulation pump 22 are operated. The circulation pump 22 draws the cooled liquid inside the cooling box 20 and delivers it to the upper set of conduits 19 through the first telescopic pipe 23. Then, it circulates between the four sets of annular grooves 16, the four sets of long circular grooves 17, another set of conduits 19, the second telescopic pipe 24 and the cooling box 20, thereby increasing the time consumed by the cooling and forming of the aluminum profile inside the cavity 8. After the aluminum profile is formed, the four sets of hydraulic cylinders 3 return to their original state, and the upper mold 40 and the lower mold 2 gradually separate. At this time, the electric push rod 31 and the drive motor 28 are operated to make the bottom of the L-shaped cone shovel 34 at the same height as the top surface of the lower mold 2. Then, it rotates and shovels along the upper surface of the lower mold 2 to remove the aluminum material that overflows into the cavity 8 when the tubular aluminum profile is extruded.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A semi-closed tubular aluminium profile hot extrusion die comprising a base, characterised in that: The top of the base is movably provided with a lower mold, the top of the base is fixedly provided with four groups of hydraulic cylinders arranged in a square shape, and the four groups of hydraulic cylinders are uniformly distributed around the lower mold, the telescopic end of the four groups of hydraulic cylinders is fixedly provided with a top plate, the top of the top plate is provided with a connecting disc, and the bottom of the connecting disc penetrates the inside of the top plate, the bottom of the connecting disc is threadedly connected with a threaded column, the bottom of the threaded column is fixedly provided with an upper mold assembly, the top of the lower mold is provided with four groups of uniformly arranged cavities, the top of the base is fixedly provided with two groups of vertically arranged plates arranged side by side, the opposite sides of the two groups of vertically arranged plates are fixedly connected with electric telescopic rods, the telescopic ends of the two groups of electric telescopic rods are fixedly connected with limiting plates, the top of the two groups of limiting plates is provided with two groups of front and rear mirror image arranged L-shaped grooves, the two sides of the lower mold are movably connected with arc-shaped plates, the opposite sides of the two groups of arc-shaped plates are fixedly provided with two groups of front and rear arranged integral plates, the outer surfaces of the four groups of integral plates are fixedly provided with L-shaped embedded strips, and the four groups of L-shaped embedded strips are slidingly connected in the space of the four groups of L-shaped grooves. The bottom of the lower mold is provided with a hidden groove, the top of the lower mold is provided with a receiving groove, and one end of the receiving groove is in communication with the top of the hidden groove, the top of the base is fixedly connected with a driving motor, and the driving motor is located in the space of the hidden groove. The output end of the driving motor is fixedly connected with a rotating shaft, the outer surface of the rotating shaft is sleeved with a cylinder, one side of the cylinder is threadedly connected with a fastening nail, one end of the fastening nail penetrates the inside of the rotating shaft, the top of the cylinder is fixedly connected with an electric storage type electric push rod, the telescopic end of the electric storage type electric push rod is fixedly connected with a cylinder, the outer surface of the cylinder is fixedly provided with a semicircular plate through screws, one side of the semicircular plate is fixedly provided with an L-shaped cone shovel. The front surface of the L-shaped cone shovel is provided with a notch, the rear wall of the notch is fixedly connected with a spring, the front surface of the spring is fixedly connected with a limiting block, and the limiting block is slidingly connected with the inner wall of the notch, the outer surface of the L-shaped cone shovel is slidingly sleeved with a cleaning shovel, and the cleaning shovel is located on the side of the limiting block close to the semicircular plate.

2. A semi-closed tubular aluminium profile hot extrusion die according to claim 1, characterized in that: The inside of the lower mold is provided with four groups of uniformly arranged annular grooves, and four groups of cavities are covered inside, the inside of the lower mold is provided with four groups of annularly arranged long strip circular grooves, four groups of long strip circular grooves are in communication with four groups of annular grooves respectively, and four groups of long strip circular grooves and four groups of annular grooves are arranged at intervals, the top of the base is fixedly provided with a refrigeration mechanism, the structure of the refrigeration mechanism comprises a pipe, the number of the pipe is two groups, and the two groups of pipes are arranged one above the other, the front surfaces of the two groups of pipes are respectively fixedly extended into the inside of the two groups of rear annular grooves.

3. A semi-closed tubular aluminium profile hot extrusion die according to claim 2, characterized in that: The structure of the refrigeration mechanism further comprises a refrigeration machine box, a storage plate, a circulating pump, a first telescopic pipe, a second telescopic pipe and a box cover, the storage plate is fixedly installed on one side of the refrigeration machine box, the circulating pump is installed on the top of the storage plate, and the input end of the circulating pump extends into the interior of the refrigeration machine box, the first telescopic pipe is fixedly connected to the output end of the circulating pump, and the front face of the first telescopic pipe is fixedly connected to the tail end of a group of upper conduits through flanges, the second telescopic pipe is fixedly connected to the front face of the refrigeration machine box, and the front face of the second telescopic pipe is fixedly connected to the tail end of a group of lower conduits through flanges, and the box cover is fixedly installed on the top of the refrigeration machine box.

4. A semi-closed tubular aluminium profile hot extrusion die according to claim 1, characterized in that: The bottom of each of the two groups of arc-shaped plates is fixedly connected with a plurality of pulleys, and the top of the lower mold is provided with two groups of positioning holes arranged in front and back.

5. A semi-closed tubular aluminium profile hot extrusion die according to claim 4, characterized in that: The structure of the upper mold assembly comprises an upper mold, positioning columns and hot extrusion mold cores, the upper mold is fixedly installed at the bottom of the threaded column, the number of the positioning columns is two groups, each of the two groups of positioning columns is fixedly installed at the bottom of the upper mold, and the two groups of positioning columns are respectively located above the two groups of positioning holes, and the number of the hot extrusion mold cores is four groups, each of the four groups of hot extrusion mold cores is fixedly installed at the bottom of the upper mold, and the four groups of hot extrusion mold cores are respectively one-to-one corresponding to the four groups of cavities.

Images