A device and process flow for quickly removing aluminum from the interior cavity of an extrusion die

Abstract

The application discloses a device and a process flow for quickly removing aluminum in an inner die cavity of an extrusion die. The device comprises a displacement rod, an extrusion system, an induction heating furnace and a crystallization container mechanism. The extrusion system comprises a die seat for fixing the extrusion die via a die sleeve, a surplus shearing device, an extrusion cylinder and an extrusion rod. The process flow comprises the following steps: sending the displacement rod into the extrusion cylinder, and making the extrusion cylinder with the displacement rod abut against the die seat; extruding the displacement rod from the extrusion cylinder into the extrusion die and partially extruding the displacement rod from the extrusion die by means of the extrusion rod with an extrusion pad installed at the front end, so as to displace the aluminum in the extrusion die by the displacement rod; shearing off the surplus displacement rod with a predetermined length; placing the extrusion die filled with the displaced rod material extruded from the middle of the extrusion die on a collecting hopper of the induction heating furnace, and making the molten displacement rod material flow from the collecting hopper into a crystallizer of a crystallization container mechanism below by electrifying and heating. Thus, the die is not damaged, the displacement rod can be repeatedly used, and the process is clean and pollution-free.

Description

Technical Field

[0001] This invention relates to the field of extrusion, and more specifically to a device and process for rapidly removing aluminum from the internal cavity of an extrusion die. Background Technology

[0002] Currently, almost all aluminum alloy extrusion dies use sodium hydroxide (NaOH) alkaline washing to remove aluminum alloy from steel dies. The advantage is that NaOH does not chemically react with steel, allowing for the non-destructive removal of residues from the die. However, this method also presents challenges such as long washing times and difficult-to-treat waste liquid. It's also important to note that high-carbon steel typically melts between 1400°C and 1450°C, while aluminum alloys melt between 607°C and 650°C. While directly heating to around 700°C would melt the aluminum without melting the high-carbon steel, allowing the aluminum alloy to be separated from the die, this high temperature easily causes the high-carbon steel to soften and anneal, rendering it unusable or severely impacting its lifespan. Therefore, this method is not used industrially. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a device and process for rapidly removing aluminum from the internal cavity of an extrusion die.

[0004] According to one aspect of the present invention, an apparatus for rapidly removing aluminum from the cavity inside an extrusion die is provided, comprising: a displacement rod with a material melting point lower than that of the extrusion die, an extrusion system, an induction heating furnace, and a crystallization container mechanism, wherein the extrusion system comprises: a die holder for fixing the extrusion die via a die sleeve, a residual shear for removing residual material, an extrusion cylinder, and an extrusion rod, the extrusion cylinder comprising a cavity through which the displacement rod passes when extruded, and an extrusion pad with a diameter smaller than that of the inner wall of the extrusion cylinder is installed at the front end of the extrusion rod, the extrusion pad being used to extrude the displacement rod to enter the cavity of the extrusion die and displace the aluminum inside the extrusion die; the induction heating furnace comprises: a collection funnel for collecting molten material from the displacement rod; and the crystallization container mechanism comprises: a crystallizer for containing molten material from the collection funnel.

[0005] Preferably, the device for rapidly removing aluminum from the internal cavity of the extrusion die further includes multiple die sleeves, each die sleeve having an inner circle with the same outer diameter as the outer circle of different extrusion dies, and having an outer circle diameter that is consistent with each other, so as to match extrusion dies of various diameters.

[0006] Preferably, the extrusion system further includes: a moving beam connecting the extrusion rod, a main thrust rod for pushing the moving beam and a main cylinder, a front beam for setting the mold seat, a rear beam for setting the main cylinder, and a tie rod connecting the front beam and the rear beam.

[0007] Preferably, the mold base has an upward-opening U-shaped structure, and the mold base is provided with protrusions that restrict the movement of the mold sleeve.

[0008] Preferably, the induction heating furnace further includes: a ceramic lining, an induction coil, an insulating outer shell, and an insulating cover.

[0009] Preferably, the crystallization container mechanism includes multi-stage crystallizers, with adjacent crystallizers arranged in a stepped manner, with the middle being higher and gradually decreasing in height, for step-by-step overflow filling. The interior of each crystallizer is a crystallizer cavity for containing the molten liquid melted from the induction heating furnace.

[0010] Preferably, an outermost baffle plate is provided at the outermost crystallizer to prevent molten liquid from overflowing, and / or, multiple sets of multi-stage crystallizers are arranged in an overall shape resembling a star.

[0011] Preferably, the displacement rod material is lead and / or tin.

[0012] According to another aspect of the present invention, a process for rapidly removing aluminum from the internal cavity of an extrusion die is provided. Based on the above-described equipment, the process includes the following steps: installing the extrusion die into a corresponding die sleeve, which is then installed into a die holder; feeding a displacement rod into an extrusion cylinder, which, along with the displacement rod, rests against the die holder; moving an extrusion rod along with an extrusion pad toward the die holder, allowing the displacement rod to continue moving from the extrusion cylinder into the extrusion die and partially extruded from it, thereby displacing the aluminum within the extrusion die; when a predetermined length of displacement rod remains outside the extrusion die, the extrusion rod, along with the extrusion pad, stops moving and retracts, and the extrusion cylinder retracts, removing the remaining predetermined length of displacement rod as residual material using residual material shearing; placing at least one of the following extrusion dies—the aluminum profile extruded from the middle of the extrusion die, the displacement rod combined profile, residual material, and the extrusion die filled with the displacement rod material—on a collecting funnel; heating an induction heating furnace to a certain temperature and maintaining the temperature, allowing the molten displacement rod material to flow from the collecting funnel into a crystallizer below.

[0013] Preferably, after the displacement rod material has solidified in the crystallizer, the bottom baffle of the crystallizer is opened and the displacement rod is demolded by tapping it from above.

[0014] The beneficial effects of this invention are as follows: By using a displacement rod, a low-melting-point metal replaces the residual aluminum in the extrusion mold. The mold, profile, and displacement rod assembly filled with the displacement rod, along with the residual pressure of the pure displacement rod component, are heated to a certain degree, causing the displacement rod to melt. The steel mold and aluminum alloy profile remain solid. The molten metal enters the crystallizer mechanism and reforms into the displacement rod, allowing for mold maintenance. The aluminum alloy profile is then recast. Compared to the alkaline washing method, which can take several hours for small molds and even tens of hours for large molds, this method significantly reduces the time, requiring only about half an hour. It also causes no damage to the mold, and the displacement rod can be reused repeatedly; the process is clean and pollution-free.

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a displacement rod used in a device according to an embodiment of the present invention, wherein (A) shows a top view and (B) shows a front view;

[0017] Figure 2 This is a schematic diagram of the extrusion system used in this equipment;

[0018] Figure 3 This is a schematic diagram showing the fit between extrusion dies and die sleeves of different specifications;

[0019] Figure 4 This is a front cross-sectional view of the induction heating furnace and crystallization container mechanism used in this equipment;

[0020] Figure 5 This is a top view of the crystallization container mechanism used in this equipment. Detailed Implementation

[0021] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The exemplary embodiments described below and illustrated in the drawings are intended to teach the principles of the invention, enabling those skilled in the art to implement and use the invention in various environments and for various applications. Therefore, the scope of protection of the present invention is defined by the appended claims, and the exemplary embodiments are not intended, and should not be considered, a limiting description of the scope of protection of the present invention. Furthermore, for ease of description, the dimensions of the various parts shown in the drawings are not necessarily drawn to actual scale. Orientation descriptions, such as the longitudinal direction corresponding to the length of the main body, and the orientations or positional relationships indicated by up, down, left, right, top, bottom, etc., are based on the orientations or positional relationships shown in the drawings and are only for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Unless otherwise specifically stated, the order and numerical values ​​of the components and assembly steps described in the embodiments do not limit the scope of the present invention. Moreover, any numerical range stated herein is intended to include all sub-ranges contained therein, and a numerical range expressed as "numerical value A to numerical value B" refers to a range including endpoints numerical values ​​A and B. Those skilled in the art will understand that the terms "first," "second," and "step" in this invention are used only to distinguish different steps, devices, or modules, and do not represent any specific technical meaning, nor do they indicate a necessary logical order between them. For example, steps two and three can be interchanged or performed in parallel.

[0022] like Figures 1-5As shown, an apparatus for rapidly removing aluminum from the internal cavity of an extrusion die according to an embodiment of the present invention includes a displacement rod 100, an extrusion system 200, an induction heating furnace 300, and a crystallization container mechanism 400.

[0023] The displacement rod 100 includes a cylindrical rod with a composition such as pure lead.

[0024] The extrusion system 200 includes: a mold sleeve 201, an extrusion mold 202, a mold base 203, an overpress shear 204, a main thrust rod 205 for pushing the moving beam 213 and a main cylinder 206, a front beam 207 for setting the mold base 203, a tie rod 208 connecting the front beam 207 and the rear beam 214, an extrusion cylinder 220 including an inner wall 209 of the extrusion cylinder and a body 210 of the extrusion cylinder, an extrusion pad 211, an extrusion rod 212, a moving beam 213, and a rear beam 214 for setting the main cylinder 206.

[0025] The induction heating furnace 300 includes: a ceramic liner 301, an induction coil 302, an insulation shell 303, an insulation cover 304, and a collection funnel 307.

[0026] The crystallization container mechanism 400 includes: a primary crystallizer 401, a secondary crystallizer 402, a tertiary crystallizer 403, a quaternary crystallizer 404, a quinary crystallizer 405, a crystallizer inner cavity 406, a baffle plate 407, a crystallizer wall 408, and a bottom baffle plate 409.

[0027] <Replacement Rod 100>

[0028] The displacement rod 100 is cylindrical in shape and made of a low-melting-point metal, such as lead or tin. Here, pure lead, which is more chemically stable and relatively inexpensive, is used as an example.

[0029] <Extrusion System 200>

[0030] The corresponding extrusion die 202, which has just come off the machine, is installed in the suitable die sleeve 201 and then hoisted into the die holder 203. Here, the die holder 203 has an upward-opening U-shaped structure. The die sleeve 201 (containing the extrusion die 202) is hoisted and fixed into the die holder 203 from top to bottom. The die holder 203 is provided with protrusions (not shown) at the front and rear to restrict the movement of the die sleeve 201.

[0031] The displacement rod 100 is fed into the extrusion cylinder 220, and the extrusion cylinder 220, carrying the displacement rod 100, abuts against the mold base 203. The drive mechanism of the extrusion cylinder 220 is not shown here, but can be set appropriately as needed.

[0032] It should be noted that, since extrusion presses of different tonnages correspond to one specification of extrusion die 202, for the sake of versatility, this invention can optionally accommodate different specifications of extrusion dies 202 with different specifications of die sleeves 201. The key feature is that the outer diameter of the die sleeve 201 remains constant, while the inner diameter of the die sleeve 201 is consistent with the outer diameter of the extrusion die 202. Figure 3 The example shows the fit of the left, middle and right sides under three different specifications. With this fit, a single extrusion system 200 can be used to meet the requirements.

[0033] The main thrust rod 205 carries the moving beam 213 and the connected extrusion rod 212. The front end of the extrusion rod 212 is equipped with an extrusion pad 211 with a diameter smaller than the inner wall 209 of the extrusion cylinder. The whole rod moves towards the mold base 203.

[0034] Since the mold sleeve 201, extrusion mold 202, extrusion cylinder 220, and extrusion pad 211 within the mold base 203 form a closed space, the displacement rod 100 within the extrusion cylinder 220 is squeezed into the extrusion mold 202 by the extrusion pad 211. Preferably, the diameter of the displacement rod 100 is the same as the cavity diameter of the extrusion mold 202, but it is not limited to this. This is because the displacement rod 100 is made of a relatively soft material, and the displacement rod 100 on the front end side can only be extruded through the extrusion mold 202. At this time, the aluminum alloy remaining in the extrusion mold 202 before it exits the machine will be extruded first from the extrusion mold 202. Thus, the displacement rod 100 will displace the aluminum alloy in the extrusion mold 202 and continue for a period of time, effectively removing the residual aluminum alloy that may be firmly adsorbed on the inner wall of the mold. The profile extruded from the extrusion mold 202 in the early stage is the residual aluminum alloy, the middle part is the aluminum profile and displacement rod combined profile 305, and the profile extruded in the later stage is pure lead.

[0035] When only a small section of the replacement rod 100, which has not yet entered the extrusion die 202, remains, for example, a predetermined length, the main thrust rod 205 stops moving and retracts. Subsequently, the extrusion cylinder 220 also retracts. When only a small section of the replacement rod 100 remains, it is called the residual pressure. The residual pressure is removed by the residual pressure shear 204.

[0036] At this point, the internal space of the extrusion die 202 is filled with pure lead.

[0037] <Induction Heating Furnace 300>

[0038] As described above, the extruded material in the middle of the extrusion die 202 is an aluminum profile combined with a displacement rod profile 305, and the final cut-off residue is pure lead residue 306. The extrusion die 202 filled with displacement rod 100 contains pure lead. Preferably, the extrusion die 202 is made of high-carbon steel, and the melting point of high-carbon steel is > aluminum alloy > pure lead.

[0039] Subsequently, as Figure 4As shown, the aluminum profile and the replacement rod combined profile 305, the residual pressure 306, and the extrusion die 202 filled by the replacement rod 100 are all placed on the collection funnel 307, covered with the heat insulation cover 304, and heated to a certain temperature and kept warm. The temperature is required to be 30-50°C higher than the melting point of pure lead in order to ensure the fluidity of pure lead metal and save energy.

[0040] The induction heating furnace 300 has a ceramic lining 301, which is resistant to high temperatures and friction. The outer layer is an insulated shell 303 made of insulating bricks to prevent heat loss. Between the two is an induction coil 302, which can heat the intermediate metal.

[0041] The function of the collecting funnel 307 in the induction heating furnace 300 is to allow the molten metal after the pure lead is melted to flow into the collecting funnel 307 below.

[0042] The heat insulation cover 304 is used to reduce heat loss. The heat insulation cover 304 is opened before heating to allow the aluminum profile and the replacement rod combined profile 305, the pressure residue 306, and the extrusion die 202 filled by the replacement rod 100 to be inserted. The heat insulation cover 304 is opened after heating to allow the aluminum profile (corresponding to the structure obtained after the aluminum profile and the replacement rod combined profile 305 loses the lead material of the replacement rod due to heat) and the extrusion die 202 to be removed.

[0043] <Crystallization Container Mechanism 400>

[0044] like Figure 4 , 5 As shown in the cross-sectional view, the crystallization container mechanism 400 has crystallizers arranged in a stepped manner, with the middle stage being higher and gradually decreasing in height. For ease of description, they are referred to as the first-stage crystallizer 401, the second-stage crystallizer 402, the third-stage crystallizer 403, the fourth-stage crystallizer 404, and the fifth-stage crystallizer 405 (collectively referred to as "crystallizers"). Apart from their position, the crystallizers at each stage have the same structure. Thus, even when the induction heating furnace 300 is stationary, each crystallizer can be filled through a step-by-step overflow.

[0045] The interior of the crystallizer is the crystallizer cavity 406, which is used to contain the pure lead metal molten liquid melted from the induction heating furnace 300.

[0046] The outermost baffle plate 407 is used to prevent pure lead molten metal from overflowing the crystallizer mechanism 400. After the fifth-stage crystallizer 405 is also filled, the induction heating furnace 300 must be stopped immediately.

[0047] To facilitate the separation of the solidified pure lead from the crystallizer, a release agent, such as a mixture of talcum powder and vegetable oil, is applied evenly to the crystallizer wall 408 and the bottom baffle 409 beforehand. After the pure lead solidifies, the bottom baffle 409 is opened, and the lead is tapped from above with a wooden hammer. The displacement rod 100 can then be used to demold the lead. At this point, a small amount of residual talcum powder remains on the surface. This should be rinsed off with water and dried with a blower before use.

[0048] <Example>

[0049] Taking the die for extruding aluminum alloy photovoltaic frames from 6005 alloy as an example, the die specifications (diameter * thickness) are 250 (±0.03) mm * 200 (±0.03) mm, and the extrusion die 202 after extrusion contains aluminum alloy. The composition of 6005 alloy conforms to the requirements of GBT3190-2020.

[0050] The displacement rod 100 has an outer diameter of 178 (±0.5) mm and a height of 800 (±5) mm. It is made of pure lead with a melting point of 327.5℃.

[0051] The corresponding mold sleeve 201 that has just come off the machine is installed in the suitable mold sleeve 201 and hoisted into the mold base 203. The displacement rod 100 is fed into the extrusion cylinder 220, and the extrusion cylinder 220, with the displacement rod 100, rests against the mold base 203.

[0052] For example, after the extrusion die 202 is produced and removed from the machine, it is first cooled to below 300°C, and then the extrusion die 202 is installed into the die sleeve 201 (inner diameter 250 (-0, +0.03) mm, outer diameter 400 mm) and hoisted into the die holder 203. The replacement bar 100 is clamped into the extrusion cylinder 220 by a hand clamp (not shown). The extrusion cylinder 220 has a diameter of 185 (±1) mm and a length of 1100 (-0, +1) mm. The hydraulic system (not shown) moves the extrusion cylinder 220 against the die holder 203 with a locking force of 280-300T.

[0053] A hydraulic system (not shown) moves the main thrust rod 205, along with the moving beam 213 and the connected extrusion rod 212, at a speed of 6 mm / s. An extrusion pad 211 is mounted on the front end of the extrusion rod 212. The entire system moves towards the mold base 203. The expansion diameter of the extrusion pad 211 is 0.005-0.008 mm smaller than the diameter of the extrusion cylinder 220.

[0054] Since the mold sleeve 201, extrusion mold 202, extrusion cylinder 220, and extrusion pad 211 inside the mold base 203 form a closed space, the displacement rod 100 inside the extrusion cylinder 220, after being squeezed by the extrusion pad 211, can only be squeezed out through the extrusion mold 202. At this time, aluminum alloy from before the machine remains inside the extrusion mold 202. The aluminum alloy will be squeezed out of the extrusion mold 202 first, and then the displacement rod 100 will replace the aluminum alloy inside the extrusion mold 202 and continue to squeeze for a period of time, effectively removing the residual aluminum alloy that may be firmly adsorbed on the inner wall of the mold inside the extrusion mold 202.

[0055] When only a small section of the replacement rod 100 remains, approximately 30-35 mm thick, the main thrust rod 205 stops moving and retracts. Subsequently, the extrusion cylinder also retracts. The remaining small section of the replacement rod 100 is called the residual pressure, which is removed by the residual pressure shear 204. The retraction drive mechanism of the extrusion cylinder 220 is not shown here, but can be appropriately set as needed.

[0056] The extrusion die 202 is lifted off the equipment, at which point the internal space of the extrusion die 202 is filled with pure lead.

[0057] That is, the material extruded from the middle of the extrusion die 202 is an aluminum profile combined with a displacement rod profile 305, and the final extrusion residue 306 is pure lead. The extrusion die 202 filled with displacement rod 100 is pure lead.

[0058] The extrusion die 202 is made of high carbon steel. The melting point of high carbon steel (1400°C to 1450°C) > aluminum alloy (607~650°C) > pure lead (327.5°C).

[0059] Open the insulation cover 304, place the aluminum profile and displacement rod combined profile 305, the residual pressure 306, and the extrusion die 202 filled by the displacement rod 100 into the collection funnel 307, cover the collection funnel 307 with the insulation cover 304, turn on the power to heat to a certain temperature and keep it warm, specifically 357.5~377.5℃, to ensure the fluidity of pure lead metal and save energy.

[0060] The induction heating furnace 300 has a ceramic lining 301 made of boron carbide high-temperature resistant ceramic. The outer layer is an insulating shell 303 made of lightweight mullite brick. The induction coil 302 located between the two has a power of 600 kW and a heating rate of 60℃ / min.

[0061] The collecting funnel 307 is located at the bottom of the induction heating furnace 300. It is funnel-shaped and made of high-carbon steel. After pure lead melts, it flows into the collecting funnel 307 below and then further into the crystallizer below for a staged overflow filling.

[0062] The insulation cover is also made of lightweight mullite brick, 304 stainless steel.

[0063] like Figure 5 As shown, the multiple sets of multi-stage crystallization containers are arranged in a star-shaped pattern. Each crystallizer has an inner diameter of 178 (±1) mm and a depth of 800 (±5) mm. The crystallizer wall 408 and the bottom baffle 409 are both made of boron carbide high-temperature resistant ceramic.

[0064] Only when the primary crystallizer 401 is full of pure lead molten metal will it flow to the secondary crystallizer 402, and so on. This allows for faster collection of the replacement rod 100 when the amount of pure lead molten metal is low, facilitating subsequent work. The outermost baffle plate 407 is 200 (-0, +5) mm higher than the fifth-stage crystallizer 405 to prevent pure lead molten metal from overflowing the crystallizer mechanism 400. Once the fifth-stage crystallizer 405 is also filled, the induction heating furnace 300 must be stopped immediately.

[0065] To facilitate the separation of the solidified pure lead from the crystallizer, a mixture of talcum powder and vegetable oil, approximately 0.02-0.05 mm thick, is evenly applied to the crystallizer wall 408 and bottom baffle 409 beforehand. After the pure lead solidifies, the bottom baffle 409 is opened, and the lead is tapped from above with a wooden hammer. The displacement rod 100 is then used to demold the lead. At this point, a small amount of residual talcum powder remains on the surface; this should be rinsed off with water and dried with a blower before use.

[0066] In this way, by using a displacement rod to replace the residual aluminum in the extrusion die with a low-melting-point metal, the extrusion die filled with the displacement rod, the aluminum profile combined with the displacement rod, and the residual pressure of the pure displacement rod component are heated to a certain degree. The displacement rod melts, while the steel die and aluminum alloy profile remain solid. The molten metal enters the crystallizer mechanism and reforms into a displacement rod, the die is maintained, and the aluminum alloy profile is recast. Compared to the alkaline washing method that takes several hours for small dies and even tens of hours for large dies, this method greatly shortens the time to only about half an hour. It also does not damage the die. Furthermore, the displacement rod can be reused, and the process is clean and pollution-free.

[0067] In the description of this application, "a plurality of" means two or more, unless otherwise expressly specified. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Although the invention has been described with reference to various specific embodiments, it should be understood that modifications can be made within the spirit and scope of the described inventive concept. Therefore, it is intended that the invention be limited to the described embodiments but will have the full scope defined by the language of the appended claims.

Claims

1. A device for rapidly removing aluminum from the internal cavity of an extrusion die, characterized in that, include: The extrusion system comprises a displacement bar (100) with a material melting point lower than that of the extrusion die, an extrusion system (200), an induction furnace (300), and a crystallization container mechanism (400). The extrusion system (200) includes: a die holder (203) for fixing the extrusion die (202) via a die sleeve (201); a residual shear (204) for removing residual material (306); an extrusion cylinder (220); and an extrusion bar (212). The extrusion cylinder (220) includes a passage for the displacement bar (100) to pass through during extrusion. The cavity has an extrusion pad (211) with a diameter smaller than the inner wall (209) of the extrusion cylinder installed at the front end of the extrusion rod (212). The extrusion pad (211) is used to extrude the displacement rod (100) to displace the aluminum in the extrusion die (202) by entering the die cavity of the extrusion die (202). The induction heating furnace (300) includes a collection funnel (307) for collecting the molten material of the displacement rod (100). The crystallization container mechanism (400) includes a crystallizer for containing the molten material from the collection funnel (307).

2. The device for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 1, characterized in that, It also includes multiple mold sleeves (201), each mold sleeve (201) having an inner circle with the same outer diameter as the outer circle diameter of different extrusion molds (202), and having an outer circle diameter that is consistent with each other, so as to match extrusion molds (202) of various diameter specifications.

3. The device for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 1, characterized in that, The extrusion system (200) also includes: a moving beam (213) connecting the extrusion rod (212), a main thrust rod (205) for pushing the moving beam (213) and a main cylinder (206), a front beam (207) for setting the mold seat (203), a rear beam (214) for setting the main cylinder (206), and a tie rod (208) connecting the front beam (207) and the rear beam (214).

4. The device for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 3, characterized in that, The mold base (203) has an open U-shaped structure and is provided with protrusions that restrict the movement of the mold sleeve (201).

5. The device for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 1, characterized in that, The induction heating furnace (300) also includes: a ceramic liner (301), an induction coil (302), an insulation shell (303), and an insulation cover (304).

6. The apparatus for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 1, characterized in that, The crystallization container mechanism (400) includes a multi-stage crystallizer, with adjacent crystallizers arranged in a stepped manner with a high center and gradually decreasing height for step-by-step overflow filling. The interior of each crystallizer is a crystallizer cavity (406) for containing the molten liquid melted from the induction heating furnace (300).

7. The apparatus for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 6, characterized in that, An outermost baffle plate (407) is provided at the outermost crystallizer to prevent molten liquid from overflowing, and / or, multiple sets of multi-stage crystallizers are arranged in an overall shape resembling a star.

8. The apparatus for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 1, characterized in that, The displacement rod is made of lead and / or tin.

9. A process for rapidly removing aluminum from the internal cavity of an extrusion die, based on the equipment described in any one of claims 1 to 8, characterized in that, The process flow includes the following steps: The extrusion die (202) is installed into the corresponding die sleeve (201), and the die sleeve (201) is installed into the die base (203); The displacement bar (100) is fed into the extrusion cylinder (220), and the extrusion cylinder (220) with the displacement bar (100) abuts against the mold base (203); The extrusion rod (212) moves toward the die holder (203) with the extrusion pad (211), and the extrusion displacement rod (100) continues to move from the extrusion cylinder (220) into the extrusion die (202) and is partially extruded from the extrusion die (202), thereby displacing the aluminum in the extrusion die (202) by the displacement rod (100); When the displacement bar (100) that has not entered the extrusion die (202) has a remaining predetermined length, the extrusion rod (212) with the extrusion pad (211) stops moving and retracts, and the extrusion cylinder (220) retracts, and the remaining predetermined length of the displacement bar (100) is cut off as the pressure residue (306) by the pressure residue shears (204); The aluminum profile extruded from the middle of the extrusion die (202) and the composite profile (305) of the displacement rod, the residual material (306) and the extrusion die (202) filled with the material of the displacement rod (100) are placed on the collection funnel (307). The induction heating furnace (300) is powered on and heated to a certain temperature and kept at that temperature, so that the melted displacement rod material flows from the collection funnel (307) into the crystallizer below.

10. The process for rapidly removing aluminum from the internal cavity of an extrusion die according to claim 9, characterized in that, After the displacement rod material solidifies in the crystallizer, open the bottom baffle (409) at the bottom of the crystallizer and knock it from above to demold the displacement rod (100).

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