A device for compression molding of aluminum alloy re-melted material

Abstract

The present application relates to the field of re-melted material stamping, in particular to an aluminum alloy re-melted material pressing forming device, which comprises a micro gap opened at the bottom of the aluminum alloy pressing table, a hydraulic rod one fixedly installed on the inner side wall of the aluminum alloy pressing table, a pressing plate fixedly installed on the outer side surface of the output end of the hydraulic rod one, a clamping frame movably sleeved on the inner side wall of the aluminum alloy pressing table and the outer side surface of the pressing plate, a hydraulic rod three arranged on the top surface of the aluminum alloy pressing table, and the bottom surface of the hydraulic rod three is fixedly installed on the top surface of the clamping frame. After the aluminum alloy particles are completely fused together, the pressing plate is continuously extruded by the hydraulic rod one, and the aluminum alloy is laminated into an aluminum alloy ingot. At this time, the extrusion device on both sides of the extrusion plate is used to position the extrusion plate on the inner side wall of the aluminum alloy pressing table, and the pressing plate is pulled back by the hydraulic rod one.

Description

Technical Field

[0001] This invention belongs to the field of recycled material stamping technology, specifically an apparatus for pressing and forming aluminum alloy recycled material. Background Technology

[0002] In aluminum profile processing enterprises, various aluminum slag wastes are generated during the extrusion molding and semi-finished product production processes. These wastes are collectively referred to as waste aluminum slag. A large amount of waste is scattered on the ground, which not only pollutes the environment but also occupies a lot of production space. Compression molding (also known as press molding, compression forming, or die molding) is a manufacturing method in which powdered, granular, agglomerated, or fibrous metal or non-metal materials are placed into a mold cavity, and pressure is applied to close the mold to form and solidify them.

[0003] In the current technology, the existing aluminum alloy remelting materials include defective die castings, gatings, excess aluminum ingots, gating gates and risers, venting plates, venting channels, as well as aluminum ingots or machining chips (chips), burrs, flash and aluminum slag generated during furnace cleaning. The aluminum alloy is then crushed into small particles by a crusher. Because different aluminum alloys are used in different applications, the proportion of alloys added to them varies to maintain their toughness. This results in different hardnesses among the different aluminum alloys. When the aluminum alloys are pressed, the particles of different hardnesses are mixed together. Under the pressure of a single extrusion, the softer aluminum alloys will deform first, while the harder aluminum alloys will not deform. This results in a mixed distribution of high-density soft areas and low-density hard areas inside the pressed parts. Gaps will remain between the hard aluminum alloy particles that have not deformed and the softer aluminum alloy particles that have been deformed. These gaps will contain lubricating oil and cleaning fluid, leading to uneven density of the pressed blocks. This can cause porosity or explosions after entering the furnace. Moreover, the microscopic density difference between the high-density soft areas and the low-density hard areas can cause uneven shrinkage of the material during subsequent sintering or heat treatment, which can easily lead to deformation and cracking.

[0004] Therefore, the present invention provides an apparatus for pressing aluminum alloy recycled material into shape. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: An apparatus for pressing and forming aluminum alloy recycled material according to this invention includes a small gap opened at one edge of the bottom of an aluminum alloy pressing table, a hydraulic rod fixedly installed on the inner wall of the aluminum alloy pressing table, a pressing plate fixedly installed on the outer surface of the output end of the hydraulic rod, and a clamping frame movably sleeved on the inner wall of the aluminum alloy pressing table and the outer surface of the pressing plate. A third hydraulic rod is provided on the top surface of the aluminum alloy pressing table, and the bottom surface of the third hydraulic rod is fixedly installed on the top surface of the clamping frame. A separating sleeve is provided on the bottom surface of the clamping frame. Multiple sets of high-frequency vibrators are fixedly installed on the bottom surface of the clamping frame, and a vibrating rod is provided at the output end of each high-frequency vibrator. A particle conveying platform and a separation guide strip are provided on the top surface of the aluminum alloy pressing table. Multiple hollow silicon nitride ceramic rods are fixedly installed on the outer surface of the pressing plate, and electromagnetic coils are provided inside the hollow silicon nitride ceramic rods.

[0007] Preferably, a pressing plate is movably sleeved on the outer surface of the pressing plate, pressing devices are provided on both sides of the pressing plate, and multiple scraping rings are provided on the outer surface of the pressing plate.

[0008] Preferably, the outer surface of the hollow silicon nitride ceramic rod is movably sleeved on the outer surface of the extrusion plate, and the inner wall of the scraper ring is movably attached to the outer surface of the hollow silicon nitride ceramic rod.

[0009] Preferably, a conical spike is provided on the outer surface of one end of the hollow silicon nitride ceramic rod, and two limiting slide rods are fixedly connected to the other side surface of the pressing plate.

[0010] Preferably, a cover plate is sway-connected to one side surface of the aluminum alloy pressing table and located in the middle of the support frame two. The cover plate has a hollow groove inside and slot holes on its surface.

[0011] Preferably, a hydraulic rod two is fixedly installed on the outer surface of the cover plate, and a push plate is movably sleeved on the inner wall of the hollow groove. The output end of the hydraulic rod two passes through the hollow groove and is fixedly connected to the surface of the push plate.

[0012] Preferably, a plurality of conical spikes are fixedly connected to the outer surface of the push plate, and the outer surface of the conical spikes extends through the slot to the outer surface of the cover plate.

[0013] Preferably, a limiting groove is formed on the top surface of the aluminum alloy pressing table and at the two side edges. A closed top plate is movably sleeved on the top surface of the limiting groove, and the outer surface of the limiting slide rod is movably sleeved on the inner wall surfaces of both sides of the aluminum alloy pressing table.

[0014] Preferably, the top surface of the aluminum alloy pressing table is fixedly connected to four support frames, and the inner side wall of the four support frames is provided with a rectangular limiting plate, the surface of the rectangular limiting plate being movably attached to the outer side surface of the corner of the separating sleeve.

[0015] Preferably, a slider is fixedly connected to the bottom surface of the differentiation and drainage strip, a support frame II is fixedly installed on one side surface of the aluminum alloy pressing table, a limit groove II is provided on the top surface of the support frame II, and the two ends of the slider are slidably sleeved on the outer surface of the limit groove II.

[0016] The beneficial effects of this invention are as follows: 1. The apparatus for pressing aluminum alloy recycled material according to the present invention, after the aluminum alloy is layered, uses hydraulic rods to pull the separating sleeve out from the inside of the aluminum alloy pressing table, allowing the layered aluminum alloy particles inside the separating sleeve to accumulate inside the aluminum alloy pressing table. At this time, a sealing top plate moves to the top surface of the aluminum alloy particles to isolate the top surface of the aluminum alloy particles. Subsequently, a pair of hydraulic rods presses the pressing plate, causing the hollow silicon nitride ceramic rods on the outer surface of the pressing plate to penetrate into the interior of the aluminum alloy particles in layers. The aluminum alloy particles are then electromagnetically heated in layers by the electromagnetic coils inside the hollow silicon nitride ceramic rods. The different eddy currents between the multiple electromagnetic coils result in different heating Joules for the aluminum alloy particles. This creates a micro-gradient temperature field that is higher at the top and lower at the bottom. Softer aluminum alloy particles soften and melt more quickly, while harder aluminum alloy particles soften more slowly. The upper layer of aluminum alloy particles heats up faster than the middle and lower layers, causing the upper layer to rapidly densify. The densified aluminum alloy layer forms a densification wave. This pressure wave flows downwards, causing residual air and oil between the aluminum alloy particles to flow downwards and be discharged in an orderly manner through the tiny gaps at the bottom of the aluminum alloy pressing platform. This effectively reduces the amount of air and oil left inside the aluminum alloy particles, solving the problems of pores, interlayers, and uneven density inside the aluminum chip briquettes, and significantly improving the quality of the briquettes and the safety of remelting. 2. The apparatus for pressing aluminum alloy recycled material according to the present invention, after the aluminum alloy particles are completely fused together, is continuously extruded by a pair of pressing plates with hydraulic rods to press the aluminum alloy into an aluminum alloy ingot. At this time, the pressing plates are positioned on the inner wall of the aluminum alloy pressing table by the extrusion devices on both sides of the extrusion plates. Then, the pair of pressing plates are pulled back with hydraulic rods. Since the extrusion plates are limited to the inner wall of the aluminum alloy pressing table, they will not move with the pressing plates. At this time, the pull back of the pressing plates will extract the hollow silicon nitride ceramic rod from the semi-solidified aluminum alloy. The residual aluminum alloy liquid on the surface of the hollow silicon nitride ceramic rod is scraped off by the scraper ring on the outer surface of the extrusion plate, reducing the aluminum alloy liquid from adsorbing on the outer surface of the hollow silicon nitride ceramic rod, which would affect the subsequent pulling of the hollow silicon nitride ceramic rod on the surface of the extrusion plate. 3. The apparatus for pressing aluminum alloy remelting material according to the present invention, after the semi-solidified aluminum alloy inside the aluminum alloy pressing table solidifies, is used in conjunction with hydraulic rod two to push the push plate, causing the conical spike on the outer surface of the push plate to extend out from the inside of the hollow groove and penetrate into the aluminum alloy to fix the aluminum alloy ingot. At this time, the cover plate swings on the surface of the aluminum alloy pressing table. During the swinging process, the aluminum alloy ingot is detached from the inside of the aluminum alloy pressing table. Subsequently, the push plate is pulled back by hydraulic rod two, causing the conical spike to be extracted from the inside of the aluminum alloy ingot, thereby recycling the aluminum alloy ingot. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a sectional perspective view of the aluminum alloy pressing table in this invention; Figure 3 This is a perspective view of the flipped cover plate in this invention; Figure 4 This is a perspective view of the support frame in this invention; Figure 5 This is a two-dimensional view of the support frame in this invention; Figure 6 This is a perspective cross-sectional view of the cover plate in this invention; Figure 7 This is a perspective view of the extrusion plate in this invention; Figure 8 This is a perspective view of the extrusion plates intersecting in this invention; Figure 9 This is a three-dimensional view of the hollow silicon nitride ceramic rod in this invention; Figure 10 This is a three-dimensional cross-sectional view of the hollow silicon nitride ceramic rod of the present invention.

[0019] In the diagram: 11. Aluminum alloy pressing table; 111. Hydraulic rod one; 112. Limiting slide rod; 113. Limiting groove one; 114. Closed top plate; 115. Micro gap; 12. Pressing plate; 121. Hollow silicon nitride ceramic rod; 122. Conical spike; 123. Electromagnetic coil; 125. Extrusion plate; 126. Scraper ring; 13. Cover plate; 131. Hollow groove; 132. Slot hole; 133. Hydraulic rod two; 134. Push plate; 135. Conical spike rod; 14. Support frame one; 141. Rectangular limiting plate; 142. Hydraulic rod three; 143. Clip-on frame; 144. Separating sleeve; 145. High-frequency vibrator; 146. Vibrating rod; 15. Support frame two; 151. Limiting groove two; 152. Slider; 153. Particle conveying table; 154. Differentiation and diversion strip. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 4 , Figure 7 and Figure 10 As shown, an apparatus for pressing aluminum alloy recycled material according to an embodiment of the present invention includes an aluminum alloy pressing table 11 with a small slit 115 at one edge of the bottom of the pressing table 11, a hydraulic rod 111 fixedly installed on the inner wall of the pressing table 11, a pressing plate 12 fixedly installed on the outer surface of the output end of the hydraulic rod 111, a snap-fit ​​bracket 143 movably sleeved on the inner wall of the pressing table 11 and the outer surface of the pressing plate 12, and a hydraulic rod 142 142 142 142 143 ... The bottom surface of 42 is fixedly installed on the top surface of the clip holder 143. The bottom surface of the clip holder 143 is provided with a separator sleeve 144. Multiple sets of high-frequency vibrators 145 are fixedly installed on the bottom surface of the clip holder 143. The output end of the high-frequency vibrator 145 is provided with a vibrating rod 146. The top surface of the aluminum alloy pressing table 11 is provided with a particle conveying table 153 and a differentiation guide strip 154. Multiple hollow silicon nitride ceramic rods 121 are fixedly installed on the outer surface of the pressing plate 12. Electromagnetic coils 123 are provided inside the hollow silicon nitride ceramic rods 121.

[0022] After the aluminum alloy is layered, the separating sleeve 144 is pulled out from the aluminum alloy pressing table 11 using hydraulic rod 142, allowing the layered aluminum alloy particles inside the separating sleeve 144 to accumulate inside the aluminum alloy pressing table 11. At this time, the sealing top plate 114 moves to the top surface of the aluminum alloy particles, isolating the top surface of the aluminum alloy particles. Subsequently, the pressing plate 12 is pressed by hydraulic rod 111, causing the hollow silicon nitride ceramic rods 121 on the outer surface of the pressing plate 12 to penetrate into the interior of the aluminum alloy particles in layers. The electromagnetic coils 123 inside the hollow silicon nitride ceramic rods 121 provide layered electromagnetic heating to the aluminum alloy particles. Utilizing the difference in eddy currents between the multiple electromagnetic coils 123, the heating Joules generated on the aluminum alloy particles will also... The difference creates a micro-gradient temperature field with a higher top and lower bottom. Softer aluminum alloy particles soften and melt more quickly, while harder aluminum alloy particles soften more slowly. The upper layer of aluminum alloy particles heats up faster than the middle and lower layers, causing the upper layer to rapidly heat and densify. The densified aluminum alloy layer forms a densification wave. This pressure wave flows downwards from top to bottom, causing the air and oil remaining between the gaps in the aluminum alloy particles to flow downwards and be discharged in an orderly manner through the tiny gaps 115 at the bottom of the aluminum alloy pressing table 11. This effectively reduces the amount of air and oil left inside the aluminum alloy particles, solving the problems of pores, interlayers, and uneven density inside the aluminum chip briquettes, and significantly improving the quality of the briquettes and the safety of remelting. Electromagnetic heating is a type of induction heating; therefore, power leads are neither required nor allowed to be directly inserted into the aluminum alloy. It is a non-contact heating method, whose core principles are Faraday's law of electromagnetic induction and Joule's law; Electromagnetic heating does not rely on a direct heat source or current contact. It generates a strong and rapidly changing magnetic field through a coil. When a conductive aluminum alloy is placed in this magnetic field, the magnetic field induces a circular current (i.e., eddy current) inside the aluminum alloy. These eddy currents flow through the inherent resistance of the aluminum alloy, generating friction and thus heating up inside the aluminum alloy itself. Conductive properties of aluminum: Aluminum itself is an excellent electrical conductor with extremely low resistivity. If a power supply lead is forcibly inserted into aluminum to conduct electricity, since aluminum cannot be directly used as a heating resistor, it will not only fail to heat effectively, but will also easily cause serious safety hazards such as short circuits and leakage. Therefore, the electromagnetic coil 123 inserted inside the silicon nitride ceramic rod 121 is just an extension of the coil, which is a high-purity copper tube; While pressing under high pressure, frictional heat or auxiliary heating can reduce the viscosity of cutting oil on the surface of aluminum alloy scrap. Under the dual action of high pressure and temperature, the oil is forced out and collected through the tiny gap 115. Meanwhile, a very small amount of aluminum chips undergo microscopic plastic flow under high pressure, filling the gaps between aluminum alloy particles and achieving micro-melting bonding. This not only significantly improves the density of the briquettes but also achieves efficient in-situ recovery of cutting fluid. The pre-treated crushed aluminum alloy particles are introduced into the four sets of separating sleeves 144 through the particle conveying table 153 and the separating guide strip 154. The falling aluminum alloy particles will wrap around the surface of the vibrating rod 146 and fill the separating sleeve 144. Then, the vibrating rod 146 is vibrated at high frequency by the high frequency vibrator 145. By using the principle of vibration-induced particle convection and gravity sedimentation, the heavier and harder aluminum alloy particles gradually move down, while the softer and softer aluminum alloy particles gradually move up, thereby separating the aluminum alloy particles of different hardness into upper and lower layers. At the same time, the surface of the vibrating rod 146 at the output end of the high-frequency vibrator 145 will come into contact with the aluminum alloy surface and vibrate at high frequency. When the vibration frequency is above 20kHz, the vibrating rod 146 and the aluminum alloy will produce violent relative micro-motion. The two will collide, shear and slide against each other in the micro-protrusions. The huge friction will directly convert mechanical energy into heat energy. The heat energy will soften the residual cooling oil on the surface of the aluminum alloy particles. The softened cooling oil can flow better. Because the harder aluminum alloy particles at the bottom soften more slowly than the aluminum alloy particles at the top, this time difference allows the softer particles to melt and adhere to the surface of the harder particles. The softer particles also have a strain-buffering effect, maintaining the material's ductility and allowing the softer and harder aluminum alloy particles to adhere fully. Under the continuous pressure of the pressing plate 12, the harder aluminum alloy particles gradually deform. During this deformation, the harder particles develop cracks at their edges due to external pressure. These cracks are reduced by the softer aluminum alloy molten material, allowing for better adhesion between the two materials and minimizing the presence of voids, cooling oil, and cleaning fluid. Furthermore, the harder particles can bear more load, providing overall reinforcement. The extremely low porosity and tight particle bonding of the pressed product result in superior tensile strength, yield strength, and elongation at break compared to traditional castings or ordinary powder metallurgy parts. Furthermore, the hollow silicon nitride ceramic rod 121 exhibits extremely strong chemical stability against molten aluminum. Its surface is almost non-wetting with molten aluminum, and it can still work stably in an oxidizing environment at 1400°C. It can completely resist the temperature corrosion of aluminum alloy solutions with solid-liquid phases at 650°C, effectively preventing failures caused by metal corrosion. At the same time, the hollow silicon nitride ceramic rod 121 has a compressive strength of up to 2000–2500 MPa and a hardness of up to 15–18 GPa, which can easily withstand the huge mechanical stress and flow wear generated when semi-solid aluminum alloys are injected into molds under high pressure. In addition, the hollow silicon nitride ceramic rod 121 has excellent thermal shock resistance. The coefficient of thermal expansion of the hollow silicon nitride ceramic rod 121 is extremely low, and it is not easy to crack due to thermal stress in rapid thermal cycling. Its service life is far longer than that of traditional steel parts, such as repeated contact with semi-solid aluminum liquid. Extending the silicon nitride ceramic rod 121 into the interior of the aluminum alloy allows the aluminum alloy to be melted layer by layer from the inside out, avoiding the traditional heating and melting device, which can only melt from the outside in. This melting method results in the outer aluminum alloy melting while the inside remains unmelted. Because there are still unmelted aluminum alloy particles inside, the viscosity of the entire aluminum alloy melt will increase significantly and the fluidity will decrease. In the subsequent melting, pressing or casting process, these unmelted solid particles are prone to agglomeration, which will hinder the uniform flow of the aluminum alloy melt and may also lead to casting interruption or poor filling. Micro-gradient temperature fields enable precise control of the composition field, temperature field, and solidification structure during solidification. This precise temperature control effectively breaks down the surface tension of aluminum alloys, promoting the formation of fine and uniform microstructures during solidification and melting, thereby significantly improving the overall performance of the material. By maintaining temperature uniformity, micro-gradient temperature fields can prevent excessive thermal stress in aluminum alloys, thus significantly reducing metallurgical casting defects such as porosity and segregation, and reducing product defects. A uniform temperature field helps the aluminum alloy to distribute evenly, and micro-gradient control can keep the deviation of the aluminum alloy at an extremely low level, ensuring the consistency of performance in all parts of the material. Materials solidified under controlled micro-gradient temperature fields exhibit excellent deformation coordination during subsequent plastic processing due to their uniform and fine internal structure and minimal defects. This makes aluminum alloys less prone to cracking during subsequent processing, resulting in a higher yield and superior mechanical properties in the final product.

[0023] like Figures 7 to 10As shown, an extrusion plate 125 is movably sleeved on the outer surface of the pressing plate 12. Extrusion devices are provided on both sides of the extrusion plate 125. Multiple scraping rings 126 are provided on the outer surface of the extrusion plate 125. The outer surface of the hollow silicon nitride ceramic rod 121 is movably sleeved on the outer surface of the extrusion plate 125, and the inner wall of the scraping ring 126 is movably attached to the outer surface of the hollow silicon nitride ceramic rod 121. A conical spike 122 is provided on the outer surface of one end of the hollow silicon nitride ceramic rod 121. Two limiting slide rods 112 are fixedly connected to the other side of the pressing plate 12.

[0024] After the aluminum alloy particles are completely fused together, the hydraulic rod 111 continuously extrudes the pressing plate 12, laminating the aluminum alloy into an aluminum alloy ingot. At this time, the extrusion devices on both sides of the extrusion plate 125 position the extrusion plate 125 on the inner wall of the aluminum alloy pressing table 11. Then, the hydraulic rod 111 pulls the pressing plate 12 back. Since the extrusion plate 125 is now limited to the inner wall of the aluminum alloy pressing table 11, it will not move with the pressing plate 12. The pullback of the pressing plate 12 will extract the hollow silicon nitride ceramic rod 121 from the semi-solidified aluminum alloy. The scraper ring 126 on the outer surface of the extrusion plate 125 will scrape off the residual aluminum alloy liquid on the surface of the hollow silicon nitride ceramic rod 121, reducing the amount of aluminum alloy liquid adsorbed on the outer surface of the hollow silicon nitride ceramic rod 121, which would affect the subsequent pulling of the hollow silicon nitride ceramic rod 121 on the surface of the extrusion plate 125.

[0025] like Figure 6 As shown, a cover plate 13 is swayingly connected to one side surface of the aluminum alloy pressing table 11 and located in the middle of the support frame 15. A hollow groove 131 is opened inside the cover plate 13, and a slot 132 is opened on the surface of the cover plate 13. A hydraulic rod 133 is fixedly installed on the outer surface of the cover plate 13. A push plate 134 is movably sleeved on the inner wall of the hollow groove 131. The output end of the hydraulic rod 133 passes through the hollow groove 131 and is fixedly connected to the surface of the push plate 134. A plurality of conical spikes 135 are fixedly connected to the outer surface of the push plate 134. The outer surface of the conical spikes 135 extends through the slot 132 to the outer surface of the cover plate 13.

[0026] After the semi-solidified aluminum alloy inside the aluminum alloy pressing table 11 solidifies, the hydraulic rod 133 pushes the push plate 134, causing the conical spike 135 on the outer surface of the push plate 134 to extend out from the hollow groove 131 and penetrate into the aluminum alloy to fix the aluminum alloy ingot. At this time, the cover plate 13 swings on the surface of the aluminum alloy pressing table 11. During the swing, the aluminum alloy ingot is detached from the interior of the aluminum alloy pressing table 11. Then, the hydraulic rod 133 pulls the push plate 134 back, causing the conical spike 135 to be extracted from the interior of the aluminum alloy ingot, and the aluminum alloy ingot is then recycled.

[0027] like Figure 2 - Figure 3 and Figures 4 to 5 As shown, a limiting groove 113 is provided on the top surface of the aluminum alloy pressing table 11 and at the two side edges. A closed top plate 114 is movably sleeved on the top surface of the limiting groove 113. The outer surface of the limiting slide rod 112 is movably sleeved on the inner walls of both sides of the aluminum alloy pressing table 11. Four support frames 14 are fixedly connected to the top surface of the aluminum alloy pressing table 11. A rectangular limiting plate 141 is provided on the inner wall of the four support frames 14. The surface of the rectangular limiting plate 141 is movably attached to the outer surface of the corner of the dividing sleeve 144. A slider 152 is fixedly connected to the bottom surface of the dividing and draining strip 154. A support frame 2 15 is fixedly installed on one side surface of the aluminum alloy pressing table 11. A limiting groove 2 151 is provided on the top surface of the support frame 2 15. The two ends of the slider 152 are slidably sleeved on the outer surface of the limiting groove 2 151.

[0028] The aluminum alloy after washing is crushed using the aluminum alloy pretreatment equipment to form roughly the same aluminum alloy particles. At the same time, the separator sleeve 144 is lowered and moved into the pressing area of ​​the aluminum alloy pressing table 11 using the hydraulic rod 111. At this time, the pressing plate 12 is pushed by the hydraulic rod 111 and stopped when the pressing plate 12 is 2 cm away from the separator sleeve 144. This avoids the friction between the pressing plate 12 and the surface of the separator sleeve 144, which would affect the subsequent pull-back of the separator sleeve 144. It also reduces the possibility that the pushing force of the pressing plate 12 will cause the separator sleeve 144 to tilt or deviate from its original position.

[0029] Working principle: The system works in conjunction with crushing equipment to crush the washed aluminum alloy into roughly uniform particles. Simultaneously, hydraulic rod 142 lowers the separating sleeve 144 into the pressing area of ​​the aluminum alloy pressing table 11. At this point, hydraulic rod 111 pushes the pressing plate 12, stopping it 2 cm away from the separating sleeve 144. This prevents direct contact between the pressing plate 12 and the surface of the separating sleeve 144, as friction would hinder the sleeve's retraction and reduce the impact of the pressing plate 12's thrust on the separating sleeve. If the cylinder 144 tilts and deviates from its original position, the pre-treated crushed aluminum alloy particles are introduced into the four sets of separating sleeves 144 through the particle conveying table 153 and the separating guide strip 154. The falling aluminum alloy particles will wrap around the surface of the vibrating rod 146 and fill the separating sleeve 144. Then, the vibrating rod 146 is vibrated at high frequency by the high frequency vibrator 145. By using the principle of vibration-induced particle convection and gravity sedimentation, the heavier and harder aluminum alloy particles gradually move down, while the softer and softer aluminum alloy particles gradually move up, thereby separating the aluminum alloy particles of different hardness into upper and lower layers. After the aluminum alloy particles have been layered inside the separating sleeve 144, the hydraulic rod 142 moves the separating sleeve 144 away from the surface of the aluminum alloy pressing table 11 and the pressing plate 12. The aluminum alloy particles inside the separating sleeve 144 will remain inside the aluminum alloy pressing table 11 through the cavity at the bottom of the separating sleeve 144. At this time, the sealing top plate 114 moves to the top surface of the aluminum alloy particles to isolate the top surface of the aluminum alloy particles. At this time, the hydraulic rod 111 continuously presses the pressing plate 12. The hollow silicon nitride ceramic rod 121 then presses the aluminum alloy particles. The alloy particles are electromagnetically heated, which softens the aluminum alloy particles. The different eddy currents between multiple hollow silicon nitride ceramic rods 121 result in different heating Joules on the aluminum alloy particles, creating a micro-gradient temperature field with higher temperatures at the top and lower temperatures at the bottom. Softer aluminum alloy particles soften and melt more quickly, while harder particles soften more slowly. As the pressing plate 12 continuously presses the particles, the temperature difference causes the upper aluminum alloy particles to densify first, forming a densification wave. This pressure wave then presses the aluminum alloy particles downwards. The air and oil remaining between the gold particles flow downwards, allowing them to be discharged in an orderly manner through the tiny gaps 115 at the bottom of the aluminum alloy pressing table 11. This effectively reduces the amount of air and oil left inside the aluminum alloy particles, solving the problems of porosity, interlayering, and uneven density inside the aluminum chip briquettes, significantly improving the quality of the briquettes and the safety of remelting. Meanwhile, the harder aluminum alloy particles at the bottom soften more slowly than the top layer. Utilizing this time difference, the softer aluminum alloy particles can be effectively melted and adhered to the surface of the harder aluminum alloy particles, and then deposited on the hollow silicon nitride ceramic rod 12. Under continuous extrusion, the harder aluminum alloy particles will gradually deform. During the deformation process, the harder aluminum alloy particles will develop cracks at their edges due to the external extrusion force. These cracks will be reduced by the softer aluminum alloy particle solution, allowing the two to adhere to each other better. This also reduces the amount of voids, cooling oil, and cleaning fluid left inside. After being crushed into aluminum alloy ingots, the ingots are flipped on one side of the aluminum alloy pressing table 11 with the help of the cover plate 13, and then extracted for subsequent recycling.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An apparatus for pressing aluminum alloy recycled material, comprising a small slit (115) formed on one side edge of the bottom of an aluminum alloy pressing table (11), a hydraulic rod (111) fixedly installed on the inner wall of the aluminum alloy pressing table (11), a pressing plate (12) fixedly installed on the outer surface of the output end of the hydraulic rod (111), and a snap-fit ​​bracket (143) movably sleeved on the inner wall of the aluminum alloy pressing table (11) and the outer surface of the pressing plate (12), characterized in that: The top surface of the aluminum alloy pressing table (11) is provided with a hydraulic rod three (142), the bottom surface of the hydraulic rod three (142) is fixedly installed on the top surface of the snap-fit ​​frame (143), the bottom surface of the snap-fit ​​frame (143) is provided with a separator sleeve (144), the bottom surface of the snap-fit ​​frame (143) is fixedly installed with multiple sets of high frequency vibrators (145), the output end of the high frequency vibrator (145) is provided with a vibrating rod (146), the top surface of the aluminum alloy pressing table (11) is provided with a particle conveying table (153) and a differentiation guide strip (154), the outer surface of the pressing plate (12) is fixedly installed with multiple hollow silicon nitride ceramic rods (121), and the hollow silicon nitride ceramic rods (121) are provided with an electromagnetic coil (123) inside. A conical spike (122) is provided on the outer surface of one end of the hollow silicon nitride ceramic rod (121). A cover plate (13) is swayed and connected to one side surface of the aluminum alloy pressing table (11) and located in the middle position of the support frame two (15). A hollow groove (131) is opened inside the cover plate (13). A slot hole (132) is opened on the surface of the cover plate (13). A hydraulic rod two (133) is fixedly installed on the outer surface of the cover plate (13). A push plate (134) is movably sleeved on the inner wall of the hollow groove (131). The output end of the hydraulic rod two (133) passes through the hollow groove (131) and is fixedly connected to the surface of the push plate (134). A rectangular limiting plate (141) is provided on the inner wall of the four support frames one (14). The surface of the rectangular limiting plate (141) is movably attached to the outer surface of the corner of the dividing sleeve (144).

2. The apparatus for pressing aluminum alloy recycled material according to claim 1, characterized in that: The outer surface of the pressing plate (12) is movably sleeved with an extrusion plate (125), and extrusion devices are provided on both sides of the extrusion plate (125).

3. The apparatus for pressing aluminum alloy recycled material according to claim 2, characterized in that: The outer surface of the extrusion plate (125) is provided with a plurality of scraping sleeves (126), and the outer surface of the hollow silicon nitride ceramic rod (121) is movably sleeved on the outer surface of the extrusion plate (125).

4. The apparatus for pressing aluminum alloy recycled material according to claim 1, characterized in that: The inner wall of the scraper ring (126) is movably attached to the outer surface of the hollow silicon nitride ceramic rod (121), and two limiting slide rods (112) are fixedly connected to the other side surface of the pressing plate (12).

5. The apparatus for pressing aluminum alloy recycled material according to claim 1, characterized in that: The outer surface of the push plate (134) is fixedly connected with a plurality of cone spikes (135), and the outer surface of the cone spikes (135) extends through the slot (132) to the outer surface of the cover plate (13).

6. The apparatus for pressing aluminum alloy recycled material according to claim 5, characterized in that: The aluminum alloy pressing table (11) has a limiting groove (113) on its top surface and at both sides, and a closed top plate (114) is movably sleeved on the top surface of the limiting groove (113).

7. The apparatus for pressing aluminum alloy recycled material according to claim 6, characterized in that: The outer surface of the limiting slide bar (112) is movably sleeved on the inner walls of both sides of the aluminum alloy pressing table (11), and four support frames (14) are fixedly connected to the top surface of the aluminum alloy pressing table (11).

8. The apparatus for pressing aluminum alloy recycled material according to claim 4, characterized in that: A slider (152) is fixedly connected to the bottom surface of the differentiation drainage strip (154).

9. The apparatus for pressing aluminum alloy recycled material into shape according to claim 1, characterized in that: A support frame 2 (15) is fixedly installed on one side surface of the aluminum alloy pressing table (11).

10. The apparatus for pressing aluminum alloy recycled material into shape according to claim 1, characterized in that: The top surface of the support frame 2 (15) is provided with a limiting groove 2 (151), and the two ends of the slider (152) are slidably sleeved on the outer surface of the limiting groove 2 (151).

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