Aluminum alloy sheet extrusion processing platform

Abstract

The present application relates to a kind of aluminum alloy plate extrusion processing platform, including bottom plate, bottom plate top is provided with rack, rack includes the fixed block being fixedly installed on the top of bottom plate and the cross bar being set between two fixed blocks, fixedly installed with extrusion cylinder on a fixed block, the piston rod of extrusion cylinder is connected with moving block, moving block moves horizontally along cross bar, extrusion column is installed in the center of moving block side away from extrusion cylinder, and shaping die and material guiding block are horizontally and parallelly set on the other fixed block.By setting sealing cylinder and sealing plate, the opening end of extrusion column is blocked after extrusion stroke ends, so that the inner cavity of extrusion column is communicated with the feed inlet of shaping die.High-pressure gas pipe is used to input high-pressure gas into sealing air cushion, and the gas is injected into shaping die through jet port and the port of left end of extrusion column, so that the end residue of aluminum alloy blank stranded in conical groove and slot is pushed forward and finally discharged from the mold.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy sheet processing technology, and specifically to an aluminum alloy sheet extrusion processing platform. Background Technology

[0002] Aluminum alloy sheets are widely used in aerospace, automotive manufacturing, rail transportation, and architectural decoration due to their advantages such as light weight, high strength, and good corrosion resistance. Extrusion is one of the important processes for forming aluminum alloy sheets. Its basic principle is to place the heated aluminum alloy billet into an extrusion cylinder, apply pressure through the extrusion rod, and cause the billet to undergo plastic deformation in the mold, thereby obtaining profiles or sheets with the desired cross-sectional shape.

[0003] Chinese patent CN103143582B discloses an extrusion forming apparatus and process for high-conductivity aluminum alloy sheets. The forming apparatus is an extrusion die, including an extrusion rod, an extrusion cylinder, a guide die, and a forming die. The extrusion groove of the guide die is designed as an inverted cone, and the extrusion groove of the forming die is consistent with the shape of the formed part. The aluminum alloy billet is heated and placed into the extrusion cylinder. Through the extrusion rod, the aluminum alloy billet passes through the guide die and the forming die to obtain a sheet with the desired cross-sectional shape. Because the guide die is conical, at the end of the extrusion stroke, the end of the aluminum alloy billet is located inside the conical guide die, and the extrusion rod cannot extrude it into the forming die. This results in a portion of residual material remaining in the guide die (also called "residual material"). This residual material is difficult to remove, causing material waste, affecting the continuity of subsequent extrusion production and the cleanliness of the die. It may even cause the die to jam due to the residual material shrinking after cooling, leading to die damage.

[0004] Therefore, there is an urgent need to design an aluminum alloy sheet extrusion processing platform that can efficiently remove residual material from the die after extrusion, in order to overcome the above-mentioned defects. Summary of the Invention

[0005] The technical implementation of the present invention is as follows: an aluminum alloy plate extrusion processing platform includes a base plate, a frame is provided on the top of the base plate, the frame includes fixed blocks symmetrically fixedly installed on the top of the base plate and a crossbar disposed between the two fixed blocks, an extrusion cylinder is fixedly installed on one fixed block, a moving block is connected to the piston rod of the extrusion cylinder, the moving block moves horizontally along the crossbar, an extrusion column is installed at the center of the side of the moving block facing away from the extrusion cylinder, a forming mold and a guide block are arranged horizontally side by side on the other fixed block, the guide block is located close to the extrusion column, and the extrusion column can extend into the guide block to press the aluminum alloy bar into the forming mold to achieve plastic deformation; a sealing cylinder is provided in the inner cavity of the extrusion column, a sealing plate is connected to the piston rod of the sealing cylinder, the sealing plate is used to seal the open end of the extrusion column, a sealing air pad is sleeved on the extrusion column, and air jets communicating with the sealing air pad are evenly spaced on the circumferential inner wall of the extrusion column, the sealing air pad is connected to a high-pressure air pipe disposed in the extrusion column.

[0006] More preferably, the outlet end of the molding die is provided with a flow-blocking and pressure-relief cover, the upper part of which is connected to a pressure relief pipe. The inlet end of the pressure relief pipe is connected to the inner side of the flow-blocking and pressure-relief cover, and the outlet end is provided with a solenoid valve.

[0007] More preferably, a straight sealing block is connected to the flow-blocking and pressure-relief cover, and the straight sealing block has a discharge port that is adapted to the discharge end of the forming mold.

[0008] More preferably, the inner cavity of the one-piece sealing block is filled with a non-Newtonian fluid.

[0009] More preferably, the base plate is provided with a receiving cylinder for receiving the shaped aluminum alloy body output from the outlet end of the forming mold, and conveying rollers are evenly spaced inside the receiving cylinder for conveying the shaped aluminum alloy body.

[0010] More preferably, the extension lines of the central axes of the extrusion column, the guide block, the flow-blocking and pressure-relief hood, the straight sealing block, and the receiving cylinder overlap.

[0011] More preferably, an air inlet pipe and a suction pipe are wound around the receiving cylinder, both of which are connected to the inner cavity of the receiving cylinder. The air inlet pipe is near the end of the receiving cylinder that outputs the formed aluminum alloy body, and the suction pipe is near the end of the receiving cylinder that inputs the formed aluminum alloy body.

[0012] More preferably, the receiving cylinder is provided with an oblique air inlet and an oblique air outlet, the oblique air inlet being connected to the air inlet pipe and the oblique air outlet being connected to the suction pipe.

[0013] More preferably, a preheating box is also provided on the bottom plate, and the suction pipe is connected to the inner cavity of the preheating box.

[0014] Compared with the prior art, the present invention has the following advantages: 1. By setting a sealing cylinder and a sealing plate, the seal on the opening end of the extrusion column is released after the extrusion stroke ends, allowing the inner cavity of the extrusion column to connect with the feed port of the forming mold. High-pressure gas is then input into the sealing gas cushion through a high-pressure gas pipe. The gas is injected into the forming mold through the jet nozzle and the port on the left end of the extrusion column, pushing the residual material at the end of the aluminum alloy billet stuck in the conical groove and the slot forward and finally expelling it from the mold, effectively solving the problem of residual material after extrusion and improving material utilization.

[0015] 2. The sealing gas pad expands under the action of high pressure gas and comes into close contact with the inner wall of the guide block placement cavity to form a reliable seal, preventing high pressure gas from leaking out from the gap between the extrusion column and the guide block, and ensuring that all gas is used to push the residual material.

[0016] 3. The receiving cylinder is equipped with an air inlet pipe, a suction pipe, an angled air inlet, and an angled exhaust outlet to form a directional airflow, which forces convection to dissipate heat from the high-temperature aluminum alloy body after forming, thus having the advantage of high heat dissipation efficiency. At the same time, the hot air that has absorbed heat is drawn into the preheating box through the suction pipe to preheat the new aluminum alloy billet, realizing the recovery and utilization of extrusion waste heat and reducing the energy consumption required to heat the billet. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the frame and components on the frame of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the extrusion cylinder, moving block, and extrusion column of the present invention.

[0020] Figure 4 This is a three-dimensional sectional view of the extrusion column and the moving block of the present invention.

[0021] Figure 5 This is a three-dimensional sectional view of the fixing block and the guide block of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the molding die of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the receiving cylinder, air inlet pipe, suction pipe, and preheating box of the present invention.

[0024] Figure 8 This is a three-dimensional sectional view of the receiving cylinder of the present invention.

[0025] The components in the attached diagram are labeled as follows: 1. Base plate; 100. Formed aluminum alloy body; 2. Frame; 201. Fixing block; 202. Crossbar; 3. Extrusion cylinder; 4. Moving block; 41. Guide rod; 5. Extrusion column; 51. Air nozzle; 6. Material guide block; 7. Flow control and pressure relief cover; 8. One-line sealing block; 9. Sealing cylinder; 10. Sealing plate; 11. High-pressure air pipe; 12. Sealing air cushion; 13. Forming mold; 14. Receiving cylinder; 141. Conveying roller; 15. Air inlet pipe; 16. Suction pipe; 17. Preheating box; 18. Angled air inlet. Detailed Implementation

[0026] 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.

[0027] Example: An aluminum alloy sheet extrusion processing platform, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the machine includes a base plate 1, a frame 2, an extrusion cylinder 3, a moving block 4, an extrusion column 5, a guide block 6, and a forming mold 13. The frame 2 is mounted on the top of the base plate 1. The frame 2 includes fixed blocks 201 symmetrically fixed to the top of the base plate 1 and four crossbars 202 disposed between the two fixed blocks 201. An extrusion cylinder 3 is fixedly mounted on the right fixed block 201. A moving block 4 is connected to the piston rod of the extrusion cylinder 3. The moving block 4 moves horizontally along the crossbars 202. Guide cylinders are symmetrically arranged on the right fixed block 201. A guide rod 41 is slidably disposed inside the guide cylinder. The guide rod 41 is connected to the moving block. 4. Fixed connection: An extrusion column 5 is installed at the center of the moving block 4 on the side opposite to the extrusion cylinder 3. A forming mold 13 and a guide block 6 are arranged horizontally side by side on the left fixed block 201. The forming mold 13 and the guide block 6 are sealed together. The guide block 6 has a discharge cavity for placing the aluminum alloy billet to be extruded. One end of the forming mold 13 near the guide block 6 has a conical groove that communicates with the discharge cavity of the guide block 6, and the other end has a straight groove that communicates with the conical groove. The guide block 6 is located near the extrusion column 5, and the extrusion column 5 can extend into the guide block 6 to press the aluminum alloy bar into the forming mold 13 to achieve plastic deformation.

[0028] In operation, the aluminum alloy billet, after being heated to a high temperature, is first placed in the discharge chamber of the guide block 6. Then, the extrusion cylinder 3 is activated, driving the moving block 4 to move horizontally along the crossbar 202 towards the guide block 6, causing the extrusion column 5 to insert into the discharge chamber of the guide block 6 and extrude the aluminum alloy billet in the discharge chamber, pressing the billet into the forming mold 13. The aluminum alloy billet passes sequentially through the conical groove and the straight groove of the forming mold 13, and is finally extruded from the outlet to obtain the formed aluminum alloy product.

[0029] like Figure 3 and Figure 4 As shown, a sealing cylinder 9 is fixedly installed on the right side of the inner cavity of the extrusion column 5. The piston rod of the sealing cylinder 9 is connected to a sealing plate 10. The sealing plate 10 is used to block the left open end of the extrusion column 5. Under normal conditions, the sealing plate 10 blocks the left open end of the extrusion column 5 and ensures the flatness of the left end face of the extrusion column 5, so as to facilitate pressing the aluminum alloy billet into the forming mold 13. A sealing air pad 12 is sleeved on the extrusion column 5. Air jets 51 that communicate with the sealing air pad 12 are evenly spaced on the circumferential inner wall of the extrusion column 5. The sealing air pad 12 is connected to the high-pressure air pipe 11 set in the extrusion column 5. When the extrusion column 5 penetrates the guide block 6 and abuts against the left end face of the forming mold 13, the sealing cylinder 9 extends, thereby driving the sealing plate 10 to extend into the feed port of the forming mold 13, thereby releasing the sealing plate 10 from blocking the left end opening of the extrusion column 5. At this time, the inner cavity of the forming mold 13 is connected to the inner cavity of the extrusion column 5. Then, high-pressure gas is input into the sealing gas pad 12 through the high-pressure gas pipe 11. The sealing gas pad 12 expands and abuts against the inner wall of the guide block 6. At the same time, the high-pressure gas in the sealing gas pad 12 is ejected through the jet nozzle 51 and injected into the forming mold 13 through the left end opening of the extrusion column 5, thereby driving the residual material in the forming mold 13 to move towards the outlet of the forming mold 13, thereby pushing the residual material in the forming mold 13 out of the forming mold 13.

[0030] When the extrusion column 5 can no longer press the end of the aluminum alloy billet into the forming mold 13, the sealing cylinder 9 is activated. The piston rod of the sealing cylinder 9 extends, thereby driving the sealing plate 10 to move to the left, releasing the seal of the sealing plate 10 on the left end opening of the extrusion column 5. At this time, the inner cavity of the extrusion column 5 is connected to the feed port of the forming mold 13. Subsequently, high-pressure gas is introduced into the sealing gas pad 12 through the high-pressure gas pipe 11. The sealing gas pad 12 expands and tightly abuts against the inner wall of the discharge cavity of the guide block 6, forming a seal to prevent high-pressure gas from leaking from the gap between the extrusion column 5 and the guide block 6. At the same time, the high-pressure gas of the sealing gas pad 12 is ejected into the inner cavity of the extrusion column 5 through the jet nozzle 51, and is delivered to the conical groove in the forming mold 13 through the port on the left side of the extrusion column 5. This pushes the end of the aluminum alloy billet into the slot of the forming mold 13, and finally pushes it out of the outside of the forming mold 13 through the slot, thereby preventing the end of the aluminum alloy billet from remaining in the forming mold 13.

[0031] like Figure 2 and Figure 5 As shown, a flow-blocking and pressure-relief shroud 7 is provided at the outlet end of the molding die 13. A pressure relief pipe is wound around the upper part of the flow-blocking and pressure-relief shroud 7. The inlet end of the pressure relief pipe is connected to the inner side of the flow-blocking and pressure-relief shroud 7, and a solenoid valve is provided at the outlet end. The solenoid valve is used to control the fluid flow rate in the pressure relief pipe, thereby realizing slow pressure relief. After the high-pressure gas is discharged through the outlet end of the molding die 13, it is blocked by the flow-blocking and pressure-relief shroud 7, and then slowly discharged through the pressure relief pipe.

[0032] like Figure 5 As shown, a straight-line sealing block 8 is connected to the flow-blocking and pressure-relief cover 7. The straight-line sealing block 8 has a straight-line discharge port that is adapted to the discharge end of the forming mold 13. The inner cavity of the straight-line sealing block 8 is filled with a non-Newtonian fluid. Under normal conditions, the straight-line sealing block 8 and the forming aluminum alloy body 100 form a soft seal. When the high-pressure gas ejected from the outlet end of the forming mold 13 impacts the inner wall of the straight-line sealing block 8 at high speed, the non-Newtonian fluid hardens rapidly after being impacted at high speed, thereby forming a rigid seal between the straight-line sealing block 8 and the forming aluminum alloy body 100.

[0033] When the end of the aluminum alloy billet is pushed out of the forming mold 13 by the high-pressure gas, the high-pressure gas is ejected from the slot of the forming mold 13. The ejected high-pressure gas is first blocked by the flow-blocking and pressure-relief cover 7 and then slowly discharged through the pressure relief pipe. At the same time, when the high-pressure gas is sprayed on the inner wall of the straight sealing block 8, the non-Newtonian fluid on the straight sealing block 8 hardens rapidly after being impacted at high speed, so that a rigid seal is formed between the opening of the straight sealing block 8 and the forming aluminum alloy body 100, further blocking the high-pressure gas in the flow-blocking and pressure-relief cover 7 and preventing the gas from being ejected in large quantities from the discharge end.

[0034] like Figure 1 , Figure 7 and Figure 8 As shown, a receiving cylinder 14 is provided on the base plate 1 to receive the formed aluminum alloy body 100 output from the outlet end of the forming mold 13. Conveying rollers 141 are evenly spaced inside the receiving cylinder 14 and are used to convey the formed aluminum alloy body 100.

[0035] It is worth noting that the extension lines of the central axes of the extrusion column 5, the guide block 6, the flow-blocking and pressure-relieving cover 7, the straight sealing block 8, and the receiving cylinder 14 overlap, thereby ensuring the alignment of the aluminum alloy billet and the formed product during the extrusion and conveying process, and reducing off-center loading and friction.

[0036] like Figure 7 and Figure 8As shown, an air inlet pipe 15 and a suction pipe 16 are wound around the receiving cylinder 14. Both the air inlet pipe 15 and the suction pipe 16 are connected to the inner cavity of the receiving cylinder 14. The end of the air inlet pipe 15 that outputs the formed aluminum alloy body 100 from the receiving cylinder 14 is close to the end of the receiving cylinder 14 that inputs the formed aluminum alloy body 100. An oblique air inlet 18 and an oblique exhaust outlet are provided inside the receiving cylinder 14. The oblique air inlet 18 is connected to the air inlet pipe 15, and the oblique exhaust outlet is connected to the suction pipe 16. The oblique air inlet 18 and the oblique exhaust outlet are staggered, so that after the gas enters the receiving cylinder 14 from the oblique air inlet 18, it makes a circular motion around the conveying roller 141 and then exits from the oblique exhaust outlet, thereby providing air cooling for the formed aluminum alloy body 100 on the conveying roller 141.

[0037] like Figure 1 and Figure 7 As shown, a preheating box 17 is also provided on the base plate 1, and the suction pipe 16 is connected to the inner cavity of the preheating box 17.

[0038] After the formed aluminum alloy body 100 exits from the forming mold 13, it enters the receiving cylinder 14 and moves along the conveying roller 141. At this time, the air inlet pipe 15 supplies gas into the receiving cylinder 14. Under the suction action of the suction pipe 16, the gas in the receiving cylinder 14 is discharged through the inclined exhaust port and enters the suction pipe 16. The directional airflow formed by the inclined air inlet 18 and the inclined exhaust port provides forced heat dissipation to the formed aluminum alloy body 100 in the receiving cylinder 14. The suction pipe 16 draws hot air into the preheating box 17 for preheating new aluminum alloy blanks, achieving waste heat recovery and utilization.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum alloy sheet extrusion processing platform, comprising a base plate (1), a frame (2) disposed on the top of the base plate (1), the frame (2) comprising fixed blocks (201) symmetrically fixedly installed on the top of the base plate (1) and a crossbar (202) disposed between the two fixed blocks (201), an extrusion cylinder (3) fixedly installed on one fixed block (201), a moving block (4) connected to the piston rod of the extrusion cylinder (3), the moving block (4) moving horizontally along the crossbar (202), an extrusion column (5) installed at the center of the moving block (4) on the side opposite to the extrusion cylinder (3), and a forming mold (13) and a guide block (6) horizontally arranged side by side on the other fixed block (201), the guide block (6) being disposed close to the extrusion column (5), and the extrusion column (5) being able to extend into the guide block (6) to press the aluminum alloy bar into the forming mold (13) to achieve plastic deformation; characterized in that: A sealing cylinder (9) is provided in the inner cavity of the extrusion column (5). The piston rod of the sealing cylinder (9) is connected to a sealing plate (10). The sealing plate (10) is used to seal the open end of the extrusion column (5). A sealing gas pad (12) is sleeved on the extrusion column (5). Air jets (51) communicating with the sealing gas pad (12) are evenly spaced on the circumferential inner wall of the extrusion column (5). The sealing gas pad (12) is connected to the high-pressure air pipe (11) provided in the extrusion column (5).

2. An aluminum alloy sheet extrusion processing platform according to claim 1, characterized in that: forming... The outlet end of the mold (13) is provided with a flow-blocking and pressure-relief cover (7), and a pressure relief pipe is wound around the top of the flow-blocking and pressure-relief cover (7). The inlet end of the pressure relief pipe is connected to the inside of the flow-blocking and pressure-relief cover (7), and a solenoid valve is provided at the outlet end.

3. The aluminum alloy sheet extrusion processing platform according to claim 2, characterized in that: A straight sealing block (8) is connected to the flow-blocking and pressure-relieving cover (7), and the straight sealing block (8) has a discharge port that is compatible with the discharge end of the forming mold (13).

4. The aluminum alloy sheet extrusion processing platform according to claim 3, characterized in that: The inner cavity of the one-line sealing block (8) is filled with non-Newtonian fluid.

5. An aluminum alloy sheet extrusion processing platform according to claim 4, characterized in that: The base plate (1) is provided with a receiving cylinder (14) for receiving the shaped aluminum alloy body (100) output from the outlet end of the forming mold (13). The receiving cylinder (14) is provided with conveying rollers (141) evenly spaced inside, and the conveying rollers (141) are used to convey the shaped aluminum alloy body (100).

6. An aluminum alloy sheet extrusion processing platform according to claim 5, characterized in that: The extension lines of the central axes of the extrusion column (5), the guide block (6), the flow-blocking and pressure-relieving cover (7), the straight sealing block (8), and the receiving cylinder (14) overlap.

7. An aluminum alloy sheet extrusion processing platform according to claim 5, characterized in that: An air inlet pipe (15) and a suction pipe (16) are wound around the receiving cylinder (14). Both the air inlet pipe (15) and the suction pipe (16) are connected to the inner cavity of the receiving cylinder (14). The air inlet pipe (15) is near the end of the receiving cylinder (14) that outputs the shaped aluminum alloy body (100), and the suction pipe (16) is near the end of the receiving cylinder (14) that inputs the shaped aluminum alloy body (100).

8. An aluminum alloy sheet extrusion processing platform according to claim 7, characterized in that: The receiving cylinder (14) is provided with an oblique air inlet (18) and an oblique exhaust outlet. The oblique air inlet (18) is connected to the air inlet pipe (15), and the oblique exhaust outlet is connected to the suction pipe (16).

9. An aluminum alloy sheet extrusion processing platform according to claim 7, characterized in that: A preheating box (17) is also provided on the base plate (1), and the suction pipe (16) is connected to the inner cavity of the preheating box (17).

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