Aluminum alloy die-casting device capable of avoiding internal residual liquid blockage

Abstract

The invention relates to the technical field of die-casting, in particular to an aluminum alloy die-casting device capable of avoiding internal residual liquid blockage, which comprises an anti-blockage injection head mounted on a die-casting die, the anti-blocking material injection head comprises a heating material conveying head, a dredging and cleaning device and a material pipe dredging device. The heating material conveying head is fixedly installed on the die-casting die, the output end of the heating material conveying head communicates with the interior of the die-casting die, and a switching installation area is further arranged on the heating material conveying head. The dredging and cleaning device is arranged on the side of the heating conveying head and comprises a rotary switching device, a material guiding pipe and a compression cleaning pipe are installed at the movable end of the rotary switching device, the material guiding pipe is used for guiding die casting liquid to circulate, and the compression cleaning pipe is used for cleaning the heating conveying head; and the material pipe dredging device is installed on the dredging and cleaning device and used for cleaning the inner wall of the material guiding pipe, and the production stability can be improved, and the maintenance cost can be reduced.

Description

Technical Field

[0001] This invention relates to the field of die casting technology, specifically to an aluminum alloy die casting device that avoids internal residual liquid blockage. Background Technology

[0002] Die casting, short for pressure casting, is a highly efficient forming method that involves filling liquid or semi-liquid metal into the cavity of a die-casting mold under high pressure and high speed, and then rapidly solidifying it under pressure to obtain a casting. It is particularly widely used in the production of automotive aluminum alloy parts. During the die casting process, the nozzle of the die-casting machine is tightly connected to the sprue bushing on the mold, and the die-casting liquid is injected into the forming cavity through the injection channel within the sprue bushing.

[0003] Chinese Patent No. CN120961887A discloses an anti-clogging flow guide structure for the gate of an automotive aluminum alloy die-casting mold, including a mold mechanism. The mold mechanism includes a forming mold, with an assembly cavity extending through its upper end and a bottom assembly cavity extending through its lower end. This device, through the insertion cavity, allows the injection port to be inserted into the cavity during die-casting production. During pressure holding, the electric heating component is activated to heat the injection port, thus creating a temperature difference between the die-casting liquid in the injection port and the die-casting liquid in the forming cavity. This prevents the solution in the injection port from solidifying and clogging. It is also relatively simple to use. The separate design of the bottom plate and the flow guide column facilitates the disassembly and installation of the electric heating component for easy maintenance. This design also isolates the electric heating component from the external environment, preventing impacts and damage. Furthermore, the insertion cavity restricts the injection port, ensuring stable operation.

[0004] The aforementioned equipment, combining heating and air blowing, still suffers from a significant common drawback: poor cleaning of thin layers of residual molten aluminum adhering to the inner wall of the injection channel. While high-pressure airflow can effectively remove weakly bonded portions due to excessive buildup, its ability to remove thin layers of molten aluminum tightly bonded to the channel wall is limited. This is primarily because the thin layer of molten aluminum exhibits strong mechanical interlocking and partial metallurgical bonding with the mold steel surface, resulting in extremely high adhesion. Furthermore, the "boundary layer effect" generated by the airflow flowing through the inner wall prevents the kinetic energy of the airflow core from effectively acting on the surface of the adhered material, relying only on limited pressure fluctuations to achieve complete removal. This incomplete cleaning problem worsens with the accumulation of die-casting cycles. After each die-casting cycle, new thin layers of molten aluminum remain and solidify on top of the existing residue, gradually reducing the actual diameter of the injection channel. This not only alters the fluid dynamics during filling, affecting casting quality, but also, in the long term, leads to gate blockage, forcing production line shutdowns for manual cleaning or component replacement, severely restricting production efficiency and equipment utilization, and increasing maintenance costs. Summary of the Invention

[0005] To address the aforementioned issues, an aluminum alloy die-casting device is provided that avoids internal residual liquid blockage. The anti-clogging injection head can improve production stability and reduce maintenance costs.

[0006] To address the problems of existing technologies, this invention provides an aluminum alloy die-casting device that avoids internal residual liquid blockage, including an anti-clogging injection head installed on the die-casting mold; the anti-clogging injection head includes a heated feeding head, a cleaning and unblocking device, and a material pipe unblocking device; the heated feeding head is fixedly installed on the die-casting mold, and its output end is connected to the inside of the die-casting mold, and the heated feeding head also has a switching installation area; the cleaning and unblocking device is located beside the heated feeding head, and includes a rotary switching device, on which a feed pipe and a compression cleaning pipe are installed, the feed pipe being used to guide the flow of die-casting liquid, and the compression cleaning pipe being used to clean the heated feeding head; the material pipe unblocking device is installed on the cleaning and unblocking device, and is used to clean the inner wall of the feed pipe.

[0007] Preferably, the heating conveyor head has an internal discharge channel that is connected to the inside of the die-casting mold. The end of the heating conveyor head away from the discharge channel is provided with a docking channel. A switching installation area is provided between the docking channel and the discharge channel. The switching installation area is used to connect a dredging and cleaning device. The heating conveyor head is also equipped with a docking fixing device. A heating component is also installed inside the heating conveyor head.

[0008] Preferably, the docking fixing device includes a first linear actuator, a connecting block, a first docking sealing ring, a second docking sealing ring, and connecting rods; the first docking sealing ring is slidably mounted on the discharge channel; the second docking sealing ring is slidably mounted on the docking channel; the first linear actuator is fixedly mounted on the heating conveyor head, and a connecting block is installed on the output end of the first linear actuator; multiple connecting rods are provided and distributed on the first and second docking sealing rings, the connecting rods are rotatably connected to the first and second docking sealing rings, and the connecting rods are rotatably connected to the connecting block away from the first and second docking sealing rings.

[0009] Preferably, the feed pipe has a feed hole inside, a first docking groove at both the front and rear ends, and an outer retaining groove on the outside.

[0010] Preferably, the front and rear ends of the compression cleaning tube are provided with rotating docking rings, and the rotating docking rings are provided with second docking grooves. The compression cleaning tube is rotatably connected to the rotating docking rings. The outer side of the compression cleaning tube is provided with a connecting slide groove. The residual liquid cleaning head is slidably installed inside the compression cleaning tube and is connected to the high-pressure gas transmission pipe. The outer side of the compression cleaning tube is also equipped with a rotary drive device. The drive end of the rotary drive device is fixedly connected to the residual liquid cleaning head. The compression cleaning tube also includes a second linear driver installed on the rotary switching device. The output end of the second linear driver is connected to the rotary drive device.

[0011] Preferably, the residual liquid cleaning head is equipped with a detachable contact head, with multiple scraping strips evenly distributed on the outer side of the contact head, and multiple evenly distributed jet heads are also provided on the residual liquid cleaning head.

[0012] Preferably, the rotary switching device includes a mounting bracket, a rotating mounting frame, and a rotary driver; the mounting bracket is fixedly mounted on the die-casting mold; the rotating mounting frame is rotatably mounted on the mounting bracket, and both ends of the rotating mounting frame are fixedly connected to the feed pipe and the compression cleaning pipe, respectively; the rotary driver is fixedly mounted on the mounting bracket, and the output end of the rotary driver is connected to the rotating mounting frame for transmission.

[0013] Preferably, the material pipe unblocking device includes a pushing cleaning mechanism and a limiting component; the pushing cleaning mechanism is fixedly installed on the rotary switching device and is used to clean the inside of the material pipe; the limiting component is installed on the rotary switching device and is used to limit and fix the position of the material pipe.

[0014] Preferably, the jacking cleaning mechanism includes a third linear drive and a dredging and cleaning column; the third linear drive is fixedly mounted on the rotary switching device; the dredging and cleaning column is fixedly mounted on the output end of the third linear drive.

[0015] Preferably, the limiting component includes an L-shaped snap-fit ​​bracket, a return spring, and a linkage pusher bracket; the L-shaped snap-fit ​​bracket is slidably mounted on the rotary switching device, one end of the L-shaped snap-fit ​​bracket is provided with a U-shaped snap-fit ​​groove, and the end of the L-shaped snap-fit ​​bracket away from the U-shaped snap-fit ​​groove is provided with a guide angle; the return spring is disposed between the L-shaped snap-fit ​​bracket and the rotary switching device; the linkage pusher bracket is fixedly mounted on the side of the unblocking and cleaning column.

[0016] The advantages of this invention compared to the prior art are: 1. This invention achieves positional interchange between the feed pipe and the compression cleaning pipe through a rotary switching device, ensuring precise alignment of the compression cleaning pipe with the heating feed head. During cleaning, the residual liquid cleaning head rotates, and the evenly distributed scrapers on the outer side make close contact with the inner wall of the discharge channel. This effectively disrupts the meshing and partial metallurgical bonding between the thin layer of molten aluminum and the mold steel surface, overcoming the problem that traditional high-pressure airflow cannot effectively act on the surface of the adhered material due to the "boundary layer effect." This thoroughly scrapes away the thin layer of residual molten aluminum tightly adhering to the inner wall of the injection channel. Simultaneously, the high-pressure airflow delivered by the high-pressure air supply pipe is ejected from the jet nozzle of the residual liquid cleaning head, concentrating on the scraped residual liquid and rapidly ejecting it from the discharge channel, achieving comprehensive and efficient cleaning. This cleaning method avoids the problem of the actual diameter of the injection channel gradually shrinking after each die-casting cycle due to the thin layer of molten aluminum, ensuring the stability of the fluid dynamics during filling, thereby ensuring casting quality, reducing the defect rate caused by casting quality problems, and improving production efficiency.

[0017] 2. This invention can thoroughly clean residual molten aluminum in the injection channel, effectively avoiding the problem of gate blockage caused by long-term accumulation. In traditional equipment, gate blockage forces the production line to stop for manual cleaning or component replacement, which not only consumes a lot of time and manpower but also seriously affects production efficiency and equipment utilization. This device, through its efficient cleaning method, reduces the number of downtimes caused by gate blockage, enabling the production line to operate continuously and stably, thus improving production efficiency. At the same time, it reduces the frequency of manual cleaning and component replacement, lowering maintenance costs, including labor costs and component procurement costs, saving enterprises significant production costs and improving their economic benefits and market competitiveness. Attached Figure Description

[0018] Figure 1 This is a front view of an aluminum alloy die-casting device according to the present invention, which avoids internal residual liquid blockage.

[0019] Figure 2 yes Figure 1 Planar sectional view at section AA.

[0020] Figure 3 This is a three-dimensional schematic diagram of an aluminum alloy die-casting device for avoiding internal residual liquid blockage according to the present invention.

[0021] Figure 4 This is a three-dimensional schematic diagram of an anti-clogging injection head in an aluminum alloy die-casting device to avoid internal residual liquid clogging, according to the present invention. Figure 1 .

[0022] Figure 5 This is a three-dimensional schematic diagram of an anti-clogging injection head in an aluminum alloy die-casting device to avoid internal residual liquid clogging, according to the present invention. Figure 2 .

[0023] Figure 6 This is a three-dimensional schematic diagram of the heating conveyor head in an aluminum alloy die-casting device that avoids internal residual liquid blockage according to the present invention.

[0024] Figure 7 This is a three-dimensional schematic diagram of a cleaning device and a material pipe unblocking device in an aluminum alloy die-casting device to avoid internal residual liquid blockage according to the present invention.

[0025] Figure 8 yes Figure 7 A magnified view of a section at point B.

[0026] Figure 9 This is a front view of the compression cleaning pipe section structure in an aluminum alloy die-casting device according to the present invention, which avoids internal residual liquid blockage.

[0027] Figure 10 yes Figure 9 Planar sectional view at section CC.

[0028] The numbers on the map are: 1. Die-casting mold; 2. Heated feed head; 22. Heating assembly; 23. Discharge channel; 24. Docking channel; 25. Docking fixing device; 251. First linear actuator; 252. Connecting block; 253. First docking sealing ring; 254. Second docking sealing ring; 255. Connecting rod; 3. Unblocking and cleaning device; 31. Feed pipe; 311. First docking groove; 312. Feeding hole; 313. Outer groove; 32. Compression cleaning pipe; 321. Rotating docking ring; 3211. Second docking groove; 322. Connecting slide; 323. Residual liquid cleaning head; 3 231. Jet nozzle; 3232. Contact head; 3233. Scraper; 324. High-pressure air supply pipe; 325. Rotary drive device; 326. Second linear actuator; 33. Rotary switching device; 331. Mounting bracket; 332. Rotary mounting bracket; 333. Rotary actuator; 4. Material pipe unblocking device; 41. Pushing cleaning mechanism; 411. Third linear actuator; 412. Unblocking and cleaning column; 42. Limiting component; 421. L-shaped clamping bracket; 4211. U-shaped clamping groove; 4212. Guide angle; 422. Return spring; 423. Linkage pushing frame. Detailed Implementation

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] See Figures 1 to 10 As shown, an aluminum alloy die-casting device for preventing internal residual liquid blockage includes an anti-clogging injection head installed on a die-casting mold 1. The anti-clogging injection head includes a heated conveying head 2, a cleaning and unblocking device 3, and a material pipe unblocking device 4. The heated conveying head 2 is fixedly installed on the die-casting mold 1, and its output end is connected to the interior of the die-casting mold 1. The heated conveying head 2 is also provided with a switching installation area. The cleaning and unblocking device 3 is located beside the heated conveying head 2 and includes a rotary switching device 33. A feed pipe 31 and a compression cleaning pipe 32 are installed on the movable end of the rotary switching device 33. The feed pipe 31 is used to guide the flow of die-casting liquid, and the compression cleaning pipe 32 is used to clean the heated conveying head 2. The material pipe unblocking device 4 is installed on the cleaning and unblocking device 3 and is used to clean the inner wall of the feed pipe 31.

[0031] When the die-casting mold 1 is operating normally, the rotary switching device 33 in the unblocking and cleaning device 3 is activated, driving the feed pipe 31 to the switching installation area of ​​the heating feed head 2. At this time, the heating feed head 2 limits and fixes the feed pipe 31 to ensure that the feed pipe 31 is in a stable position. Subsequently, the conveying equipment starts working, pushing the die-casting liquid into the heating feed head 2. The die-casting liquid passes through the heating feed head 2 and the feed pipe 31 in sequence, and finally enters directly into the die-casting mold 1, completing the normal die-casting liquid conveying process.

[0032] After the die-casting mold 1 stops working, to prevent the residual die-casting liquid at the output end of the heated conveyor head 2 from solidifying and causing blockage, the outlet end of the heated conveyor head 2 needs to be cleaned. At this time, the heated conveyor head 2 releases the limit on the feed pipe 31, and the rotary switching device 33 restarts, driving the feed pipe 31 and the compression cleaning pipe 32 to interchange positions, so that the compression cleaning pipe 32 moves to the switching installation area of ​​the heated conveyor head 2. Then, the heated conveyor head 2 limits and fixes the compression cleaning pipe 32 to ensure that the compression cleaning pipe 32 is in an accurate position. The compression cleaning pipe 32 is connected to the gas supply equipment, and the gas supply equipment starts working, compressing the high-pressure airflow, and then spraying the airflow along the inner wall of the heated conveyor head 2 through the compression cleaning pipe 32. The concentrated high-pressure airflow can efficiently remove the residual die-casting liquid inside the inner wall of the heated conveyor head 2, effectively overcoming the problem that the high-pressure airflow has limited ability to remove the thin layer of aluminum liquid that is tightly bonded to the inner wall of the channel.

[0033] At the same time, the material pipe unblocking device 4 is activated to unblock and clean the inner wall of the material inlet pipe 31. This effectively removes residual molten aluminum adhering to the inner wall of the material inlet pipe 31, achieving a comprehensive and effective unblocking and cleaning.

[0034] After the cleaning is completed, the movable end of the rotary switching device 33 actuates again, driving the feed pipe 31 and the compression cleaning pipe 32 back to their initial positions, ready for the next use of the die-casting equipment. This working method effectively improves the cleaning effect on residual aluminum liquid in the injection channel, avoiding problems such as reduced injection channel diameter, affected casting quality, and gate blockage caused by incomplete cleaning of residual aluminum liquid. This improves production stability, reduces the frequency of production line downtime for manual cleaning or component replacement, and lowers maintenance costs.

[0035] Both the gas conveying equipment and the material conveying equipment are existing technologies and will not be described in detail here.

[0036] See Figures 1 to 6As shown, the heating conveying head 2 has an internal discharge channel 23 that is connected to the die-casting mold 1. The end of the heating conveying head 2 away from the discharge channel 23 is provided with a docking channel 24. A switching installation area is provided between the docking channel 24 and the discharge channel 23. The switching installation area is used to connect the unblocking and cleaning device 3. A docking fixing device 25 is also installed on the heating conveying head 2. A heating component 22 is also installed inside the heating conveying head 2.

[0037] The heated conveying head 2 is fixedly installed on the die-casting mold 1, and has an internal discharge channel 23 that communicates with the interior of the die-casting mold 1, providing a pathway for the die-casting liquid to enter the mold. A docking channel 24 is provided at the end of the heated conveying head 2 away from the discharge channel 23. This docking channel 24 is used to connect with a conveying device to receive the die-casting liquid delivered by the conveying device.

[0038] The switching installation area connects and cooperates with the unblocking and cleaning device 3. Simultaneously, the heated conveyor head 2 is equipped with a docking and fixing device 25, ensuring the accuracy and stability of the position of the components connected to the switching installation area. Furthermore, a heating component 22 is installed inside the heated conveyor head 2. This heating component 22 generates heat and heats the interior of the heated conveyor head 2 to maintain a suitable temperature environment and prevent the solidification of residual die-casting liquid.

[0039] During the normal operation of the die-casting mold 1, the rotary switching device 33 in the unblocking and cleaning device 3 is activated, driving the feed pipe 31 to move to the switching installation area. At this time, the docking and fixing device 25 plays its role, effectively fixing both ends of the feed pipe 31, so that one end of the feed pipe 31 is tightly connected to the docking channel 24, and the other end is accurately docked with the discharge channel 23, thus constructing a complete die-casting liquid transportation path. Subsequently, the conveying equipment starts to operate, pushing the die-casting liquid through the docking channel 24 into the feed pipe 31. The die-casting liquid passes through the docking channel 24, the feed pipe 31, and the discharge channel 23 in sequence, and finally smoothly enters the die-casting mold 1, completing the normal die-casting liquid transportation task. During this process, the heating component 22 works continuously to heat the inside of the heating conveying head 2, ensuring that even if a small amount of die-casting liquid remains, it will not solidify due to temperature drop, ensuring the smoothness of the transportation process.

[0040] See Figures 1 to 6As shown, the docking fixing device 25 includes a first linear actuator 251, a connecting block 252, a first docking sealing ring 253, a second docking sealing ring 254, and connecting rods 255. The first docking sealing ring 253 is slidably mounted on the discharge channel 23; the second docking sealing ring 254 is slidably mounted on the docking channel 24; the first linear actuator 251 is fixedly mounted on the heating conveying head 2, and the connecting block 252 is mounted on the output end of the first linear actuator 251; multiple connecting rods 255 are provided and distributed on the first docking sealing ring 253 and the second docking sealing ring 254. The connecting rods 255 are rotatably connected to the first docking sealing ring 253 and the second docking sealing ring 254, and the connecting rods 255 are rotatably connected to the connecting block 252 away from the first docking sealing ring 253 and the second docking sealing ring 254.

[0041] When the feed pipe 31 or the compression cleaning pipe 32 moves to the switching installation area under the action of the rotary switching device 33 in the unblocking and cleaning device 3, the first linear actuator 251 starts working. This drives the connecting block 252 to move synchronously. The movement of the connecting block 252 generates thrust, which is transmitted to each connecting rod 255 through the rotational connection, causing the connecting rod 255 to move accordingly. Since the connecting rod 255 is rotatably connected to the first mating sealing ring 253 and the second mating sealing ring 254, under the drive of the connecting rod 255, the first mating sealing ring 253 and the second mating sealing ring 254 slide closer to each other.

[0042] As the first mating sealing ring 253 and the second mating sealing ring 254 approach each other, they press against the feed pipe 31 or the compression cleaning pipe 32 from both ends. During this process, the first and second mating sealing rings 253 and 254, through their tight fit with the outer wall of the feed pipe 31 or the compression cleaning pipe 32, form an effective sealing structure, preventing leakage of the die-casting liquid during transportation. Simultaneously, this pressing action also ensures the positional accuracy and stability of the feed pipe 31 or the compression cleaning pipe 32.

[0043] See Figures 3 to 8 As shown, the feed pipe 31 has a feed hole 312 inside, and the feed pipe 31 has a first docking groove 311 at both the front and rear ends, and an outer groove 313 on the outside of the feed pipe 31.

[0044] During normal operation of the die-casting mold 1, the rotary switching device 33 in the unblocking and cleaning device 3 is activated, and its movable end drives the feed pipe 31 to the switching installation area of ​​the heating conveyor head 2. At this time, the docking and fixing device 25 on the heating conveyor head 2 plays its role, and the first docking sealing ring 253 and the second docking sealing ring 254 are precisely docked and tightly pressed with the first docking grooves 311 at the front and rear ends of the feed pipe 31, respectively. This docking method not only achieves a stable connection between the feed pipe 31 and the heating conveyor head 2, but also forms a good sealing effect to prevent leakage of the die-casting liquid during the transportation process.

[0045] The feed hole 312 inside the feed pipe 31 establishes a flow path during this process, with one end connected to the discharge channel 23 of the heated feed head 2 and the other end connected to the docking channel 24 of the feeding equipment. After the feeding equipment starts working, it pushes the die-casting liquid into the heated feed head 2. The die-casting liquid passes through the heated feed head 2 and the feed hole 312 of the feed pipe 31 in sequence, and finally enters the die-casting mold 1 directly, completing the normal die-casting liquid transportation task. Throughout the transportation process, the feed pipe 31, with its stable structure and reasonable orifice design, ensures that the die-casting liquid can flow smoothly and evenly, providing a guarantee for high-quality die-casting production.

[0046] Meanwhile, since the outer side of the feed pipe 31 is provided with an outer groove 313, the feed pipe unblocking device 4 can accurately fix the feed pipe 31 by cooperating with the outer groove 313, ensuring that the feed pipe 31 is stable in position during the cleaning process and will not shake or shift due to external force, thereby ensuring the effectiveness and accuracy of the cleaning work.

[0047] See Figures 3 to 10 As shown, the front and rear ends of the compression cleaning pipe 32 are provided with rotating docking rings 321, and the rotating docking rings 321 are provided with second docking grooves 3211. The compression cleaning pipe 32 is rotatably connected to the rotating docking rings 321. The outer side of the compression cleaning pipe 32 is provided with a connecting slide groove 322. The residual liquid cleaning head 323 is slidably installed inside the compression cleaning pipe 32. The residual liquid cleaning head 323 is connected to the high-pressure gas transmission pipe 324. The outer side of the compression cleaning pipe 32 is also equipped with a rotary drive device 325. The drive end of the rotary drive device 325 is fixedly connected to the residual liquid cleaning head 323. The compression cleaning pipe 32 also includes a second linear driver 326 installed on the rotary switching device 33. The output end of the second linear driver 326 is connected to the rotary drive device 325.

[0048] When the die-casting mold 1 stops working and the discharge channel 23 of the heated conveying head 2 needs to be cleaned, the heated conveying head 2 releases the restriction on the feed pipe 31, and the rotary switching device 33 in the unblocking and cleaning device 3 is activated, causing the feed pipe 31 and the compression cleaning pipe 32 to interchange positions, so that the compression cleaning pipe 32 moves to the switching installation area of ​​the heated conveying head 2. At this time, the rotating docking rings 321 set at both ends of the compression cleaning pipe 32 play a role. The second docking groove 3211 on the rotating docking ring 321 accurately docks with the first docking sealing ring 253 and the second docking sealing ring 254 on the heated conveying head 2, respectively. Through this docking method, the compression cleaning pipe 32 is stably limited and fixed on the heated conveying head 2, ensuring that the position of the compression cleaning pipe 32 is accurate during the subsequent cleaning process and will not shake or shift due to external forces, providing a stable operating basis for efficient cleaning of the discharge channel 23.

[0049] The compression cleaning tube 32 also includes a second linear actuator 326 mounted on the rotary switching device 33. The output end of the second linear actuator 326 is connected to a rotary drive device 325 mounted on the outside of the compression cleaning tube 32. After the compression cleaning tube 32 is positioned and fixed, the second linear actuator 326 starts working and moves according to a preset direction and stroke, thereby driving the rotary drive device 325 to move synchronously. When the rotary drive device 325 moves, it further drives the residual liquid cleaning head 323, which is installed inside the compression cleaning tube 32 and slidably connected to it, to move towards the discharge channel 23 of the heated conveying head 2. As the residual liquid cleaning head 323 moves, the front end of the residual liquid cleaning head 323 gradually contacts the inner wall of the discharge channel 23, preparing for the subsequent residual liquid scraping work.

[0050] When the residual liquid cleaning head 323 contacts the inner wall of the discharge channel 23, the rotary drive device 325 starts working, driving the residual liquid cleaning head 323 to rotate at high speed around its own axis. During the rotation, the surface of the residual liquid cleaning head 323 generates friction with the residual aluminum liquid adhering to the inner wall of the discharge channel 23. This friction effectively scrapes off the residual aluminum liquid on the inner wall. At the same time, the residual liquid cleaning head 323 of the compression cleaning pipe 32 is connected to the high-pressure gas transmission pipe 324, and the other end of the high-pressure gas transmission pipe 324 is connected to the gas transmission equipment. The gas transmission equipment starts working, delivering high-pressure airflow through the high-pressure gas transmission pipe 324 into the gap between the residual liquid cleaning head 323 and the inner wall of the discharge channel 23. Due to the existence of the gap, the pressure of the high-pressure airflow increases further when it passes through, and it can concentrate on the scraped residual liquid. The powerful high-pressure airflow quickly sprays the scraped residual liquid out of the discharge channel 23, achieving a comprehensive and efficient cleaning of the residual aluminum liquid on the inner wall of the discharge channel 23. The scraping and high-pressure airflow impact cleaning methods can effectively overcome the problem that high-pressure airflow has limited ability to remove thin layers of molten aluminum that are tightly bonded to the inner wall of the channel, thus greatly improving the cleaning effect.

[0051] See Figure 9 and Figure 10 As shown, the residual liquid cleaning head 323 is provided with a detachable contact head 3232, and multiple scraper strips 3233 are evenly distributed on the outer side of the contact head 3232. The residual liquid cleaning head 323 is also provided with multiple evenly distributed jet heads 3231.

[0052] When the contact head 3232 comes into contact with the inner wall of the discharge channel 23, the rotary drive device 325 starts working, driving the residual liquid cleaning head 323 to rotate at high speed around its own axis. Multiple scraper blades 3233 are evenly distributed on the outer side of the contact head 3232 on the residual liquid cleaning head 323. During high-speed rotation, the scraper blades 3233 generate friction with the residual aluminum liquid adhering to the inner wall of the discharge channel 23. This friction effectively scrapes off the aluminum liquid tightly adhering to the inner wall of the discharge channel 23, causing the residual liquid to detach from the inner wall surface, thus providing conditions for subsequent airflow cleaning.

[0053] The residual liquid cleaning head 323 is connected to the high-pressure gas supply pipe 324, the other end of which is connected to the gas supply equipment. While the residual liquid cleaning head 323 rotates at high speed to scrape away the residual liquid, the gas supply equipment starts working, delivering high-pressure airflow through the high-pressure gas supply pipe 324 into the interior of the residual liquid cleaning head 323. The residual liquid cleaning head 323 is equipped with multiple evenly distributed jet nozzles 3231. The high-pressure airflow is evenly ejected from the jet nozzles 3231 and enters the gap between the contact head 3232 and the inner wall of the discharge channel 23. Due to the existence of the gap, the pressure of the high-pressure airflow increases further as it passes through, and it can concentrate its action on the scraped residual liquid. The powerful high-pressure airflow rapidly ejects the scraped residual liquid out of the discharge channel 23, achieving comprehensive and efficient cleaning of the residual aluminum liquid on the inner wall of the discharge channel 23. This cleaning method, combining mechanical scraping and high-pressure airflow impact, effectively overcomes the problem of limited ability of high-pressure airflow to remove thin layers of aluminum liquid tightly bonded to the inner wall of the channel, greatly improving the cleaning effect.

[0054] After repeated use, the scraper 3233 on the contact head 3232 may wear down due to prolonged friction with the residual liquid, affecting the cleaning effect. In this case, because the contact head 3232 has a detachable design, the operator can remove the worn contact head 3232 from the residual liquid cleaning head 323 and replace it with a new one, restoring the residual liquid cleaning head 323 to good cleaning performance so it can continue to function in subsequent cleaning operations. This detachable design extends the service life of the residual liquid cleaning head 323 and reduces equipment maintenance costs.

[0055] See Figures 3 to 7As shown, the rotary switching device 33 includes a mounting bracket 331, a rotating mounting frame 332, and a rotary driver 333; the mounting bracket 331 is fixedly mounted on the die-casting mold 1; the rotating mounting frame 332 is rotatably mounted on the mounting bracket 331, and both ends of the rotating mounting frame 332 are fixedly connected to the feed pipe 31 and the compression cleaning pipe 32, respectively; the rotary driver 333 is fixedly mounted on the mounting bracket 331, and the output end of the rotary driver 333 is connected to the rotating mounting frame 332 for transmission.

[0056] When the die-casting mold 1 is operating normally, the rotary drive 333 is stationary, and the rotating mounting bracket 332 remains in a fixed position. At this time, the feed pipe 31 is located in the switching mounting area of ​​the heating feed head 2 and is limited and fixed by the heating feed head 2. The feeding device pushes the die-casting liquid to the heating feed head 2. The die-casting liquid passes through the heating feed head 2 and the feed pipe 31 in sequence, and finally enters the interior of the die-casting mold 1, completing the normal die-casting liquid transportation process. During this process, the compression cleaning pipe 32 is in a side position and does not participate in the die-casting liquid transportation.

[0057] When the die-casting mold 1 stops working and the discharge end of the heating conveyor head 2 needs to be cleaned, the heating conveyor head 2 first releases the limit on the feed pipe 31. Then, the rotary driver 333 starts working, outputting power according to the preset rotation direction and angle, and transmitting the power to the rotating mounting bracket 332 through a transmission connection. Driven by the rotary driver 333, the rotating mounting bracket 332 rotates around its rotational connection point with the mounting bracket 331. Since both ends of the rotating mounting bracket 332 are fixedly connected to the feed pipe 31 and the compression cleaning pipe 32 respectively, the feed pipe 31 and the compression cleaning pipe 32 will interchange positions as the rotating mounting bracket 332 rotates. When the compression cleaning pipe 32 rotates to the switching installation area of ​​the heating conveyor head 2, the rotary driver 333 stops working. At this time, the heating conveyor head 2 limits and fixes the compression cleaning pipe 32 to ensure accurate positioning for subsequent cleaning work. After cleaning the heating conveyor head 2 and the feed pipe 31, the rotary drive 333 restarts, outputting power in the opposite direction and angle to drive the rotating mounting bracket 332 to rotate in the opposite direction. The feed pipe 31 and the compression cleaning pipe 32 then swap positions again, returning to their initial positions, i.e., the feed pipe 31 is located in the switching mounting area of ​​the heating conveyor head 2, waiting for the die-casting equipment to be used next time.

[0058] See Figures 1 to 5 As shown, the material pipe unblocking device 4 includes a pushing cleaning mechanism 41 and a limiting component 42; the pushing cleaning mechanism 41 is fixedly installed on the rotary switching device 33, and the pushing cleaning mechanism 41 is used to clean the inside of the material pipe 31; the limiting component 42 is installed on the rotary switching device 33, and the limiting component 42 is used to limit and fix the position of the material pipe 31.

[0059] When the die-casting mold 1 stops working and the inner wall of the feed pipe 31 needs to be cleaned, the rotary switching device 33 in the unblocking and cleaning device 3 has already driven the feed pipe 31 and the compression cleaning pipe 32 to exchange positions, so that the feed pipe 31 is in a position where cleaning can be performed. At this time, the feed pipe unblocking device 4 starts, and the limiting component 42 plays its role first. The limiting component 42 is installed on the rotary switching device 33 and is adapted to the outer groove 313 on the outside of the feed pipe 31. Through the precise cooperation with the outer groove 313, the limiting component 42 positions and fixes the feed pipe 31 from the outside, ensuring that the feed pipe 31 is stable in position during the subsequent cleaning process and will not shake or shift due to external forces, thus providing a stable operating basis for the cleaning work.

[0060] After the limiting component 42 completes the positioning and fixing of the feed tube 31, the pushing cleaning mechanism 41 begins to work. The pushing cleaning mechanism 41 is fixedly installed on the rotary switching device 33. The cleaning end of the pushing cleaning mechanism 41 has a suitable shape and size, which can smoothly pass through the feed hole 312 provided inside the feed tube 31. The cleaning end of the pushing cleaning mechanism 41 is pushed into the feed hole 312 with a certain force and speed. During the pushing process, the cleaning end comes into contact with and interacts with the residual aluminum liquid adhering to the inner wall of the feed hole 312. This force can scrape off the loosely adhered and partially adhered residual aluminum liquid from the inner wall of the feed hole 312. As the cleaning end continues to push forward, the scraped residual aluminum liquid is pushed out from one end of the feed hole 312, thus cleaning the inner wall of the feed tube 31.

[0061] To ensure that the residual molten aluminum on the inner wall of the feed pipe 31 is thoroughly cleaned, the pushing cleaning mechanism 41 can perform multiple reciprocating movements as needed. During the reciprocating movements, the cleaning end can further scrape and clean the inner wall of the feed hole 312 repeatedly, completely removing some residual molten aluminum that is difficult to remove in one go.

[0062] See Figures 3 to 5 As shown, the push-pull cleaning mechanism 41 includes a third linear drive 411 and a dredging and cleaning column 412; the third linear drive 411 is fixedly installed on the rotary switching device 33; the dredging and cleaning column 412 is fixedly installed at the output end of the third linear drive 411.

[0063] When the die-casting mold 1 stops working and the inner wall of the feed pipe 31 needs to be cleaned, the rotary switching device 33 in the unblocking and cleaning device 3 has completed the position exchange between the feed pipe 31 and the compression cleaning pipe 32, so that the feed pipe 31 is in a cleanable position. At this time, the limiting component 42 in the pipe unblocking device 4 has completed the positioning and fixing of the feed pipe 31, ensuring its stable position during the cleaning process. The pushing cleaning mechanism 41 is in the initial state, the third linear actuator 411 is fixedly installed on the rotary switching device 33, and the unblocking and cleaning column 412 installed at the output end of the third linear actuator 411 is located on one side of the feed hole 312 of the feed pipe 31, and the shape of the unblocking and cleaning column 412 matches the shape of the feed hole 312 of the feed pipe 31, preparing for the subsequent cleaning work.

[0064] The third linear actuator 411 starts working, generating linear motion according to preset driving parameters, pushing the cleaning column 412 into the feed hole 312 of the feed pipe 31 with a certain force and speed. During the advancement, the cleaning column 412 comes into contact with and interacts with the residual molten aluminum adhering to the inner wall of the feed hole 312. Because the shape of the cleaning column 412 is adapted to the shape of the feed hole 312, its surface can fit tightly against the inner wall of the feed hole 312, thereby scraping off the loosely adhered and partially adhered residual molten aluminum from the inner wall of the feed hole 312. As the cleaning column 412 continues to advance, the scraped residual molten aluminum is squeezed and moves along the feed hole 312 to one end, and is finally squeezed out of the feed hole 312, thus cleaning the inner wall of the feed pipe 31.

[0065] See Figures 3 to 5 As shown, the limiting component 42 includes an L-shaped card holder 421, a return spring 422, and a linkage pusher 423; the L-shaped card holder 421 is slidably mounted on the rotary switching device 33, one end of the L-shaped card holder 421 is provided with a U-shaped card groove 4211, and the end of the L-shaped card holder 421 away from the U-shaped card groove 4211 is provided with a guide angle 4212; the return spring 422 is disposed between the L-shaped card holder 421 and the rotary switching device 33; the linkage pusher 423 is fixedly mounted on the side of the unblocking and cleaning column 412.

[0066] When the die-casting mold 1 stops working and the inner wall of the feed pipe 31 needs to be cleaned, the rotary switching device 33 in the unblocking and cleaning device 3 has completed the position exchange between the feed pipe 31 and the compression cleaning pipe 32, so that the feed pipe 31 is in a cleanable position. At this time, the cleaning mechanism is in the initial state, the third linear actuator 411 is fixedly installed on the rotary switching device 33, and the unblocking and cleaning column 412 installed at the output end of the third linear actuator 411 is located on one side of the feed hole 312 of the feed pipe 31. The L-shaped clamping bracket 421 in the limiting assembly 42 is slidably installed on the rotary switching device 33, and the return spring 422 is set between the L-shaped clamping bracket 421 and the rotary switching device 33 to provide elastic return force for the L-shaped clamping bracket 421. The U-shaped slot 4211 at one end of the L-shaped card holder 421 is located away from the outer slot 313 of the feed pipe 31, and the guide angle 4212 at the other end is oriented toward the possible movement direction of the linkage pusher 423. The linkage pusher 423 is fixedly installed on the side of the unblocking and cleaning column 412, and the entire limiting component 42 is in a ready-to-trigger state.

[0067] The third linear actuator 411 starts working, pushing the cleaning column 412 into the feed hole 312 of the feed pipe 31. Since the linkage pusher 423 is fixedly installed on the side of the cleaning column 412, the movement of the cleaning column 412 will drive the linkage pusher 423 to move synchronously. During the movement of the linkage pusher 423, it will come into contact with the guide angle 4212 of the L-shaped clamping bracket 421 away from the U-shaped clamping groove 4211. As the linkage pusher 423 continues to move, it will apply a force to the guide angle 4212. Under the push of this force, the L-shaped clamping bracket 421 moves along the sliding installation direction, while pressing the return spring 422 set between it and the rotary switching device 33, causing the return spring 422 to undergo elastic deformation and store elastic potential energy.

[0068] As the L-shaped clamping bracket 421 moves continuously under the push of the linkage pressing bracket 423, when it reaches a certain position, the U-shaped clamping groove 4211 on the L-shaped clamping bracket 421 is aligned with the outer clamping groove 313 on the outside of the feed tube 31. At this time, under the elastic restoring force of the return spring 422, the L-shaped clamping bracket 421 will quickly move towards the feed tube 31, so that the U-shaped clamping groove 4211 is precisely engaged with the outer clamping groove 313 of the feed tube 31. Through this precise engagement, the L-shaped clamping bracket 421 positions and fixes the feed tube 31 from the outside, effectively limiting the shaking and displacement of the feed tube 31 during the cleaning process, ensuring the stability of the unblocking and cleaning column 412 when entering the conveying hole 312, and providing a reliable operating basis for the cleaning work of the top-pushing cleaning mechanism 41 on the inner wall of the feed tube 31.

[0069] After the cleaning of the inner wall of the feed tube 31 is completed, the third linear actuator 411 controls the unblocking and cleaning column 412 to retract to its initial position. As the unblocking and cleaning column 412 retracts, the linkage pusher 423 also retracts synchronously, no longer applying force to the guide angle 4212 of the L-shaped clamping bracket 421. At this time, the return spring 422 releases the stored elastic potential energy, pushing the L-shaped clamping bracket 421 to move in the opposite direction along the sliding installation direction, causing the U-shaped clamping groove 4211 to disengage from the outer clamping groove 313 of the feed tube 31, returning to the initial state, waiting to trigger the limiting action again during the next cleaning operation. Through this repeatable limiting and resetting mechanism, the limiting component 42 can efficiently and stably complete the limiting and fixing of the feed tube 31.

[0070] Specific working principle: During normal operation of the die-casting mold, the rotary switching device in the unblocking and cleaning system is activated, moving the feed pipe to the switching installation area of ​​the heating conveyor head. The docking and fixing device on the heating conveyor head then functions, with the first and second docking sealing rings precisely engaging and tightly pressing against the first docking grooves at both ends of the feed pipe, forming a stable connection and a good seal to prevent die-casting liquid leakage. The feed holes inside the feed pipe create a flow path, with one end connected to the discharge channel of the heating conveyor head and the other end connected to the docking channel of the conveying equipment. The conveying equipment operates, pushing the die-casting liquid to the heating conveyor head. The die-casting liquid then passes sequentially through the heating conveyor head and the feed holes of the feed pipe, entering the die-casting mold and completing the normal conveying task.

[0071] When the die-casting mold stops working and the inner wall of the heating conveyor head and the feed pipe needs to be cleaned, the heating conveyor head releases its restriction on the feed pipe. The rotary switching device restarts, causing the feed pipe and the compression cleaning pipe to interchange positions, moving the compression cleaning pipe to the switching installation area. The second mating grooves on the rotating mating rings at both ends of the compression cleaning pipe precisely mate with the first and second mating sealing rings on the heating conveyor head, respectively, achieving stable positioning and fixation.

[0072] The second linear actuator 326, mounted on the rotary switching device, is activated, driving the rotary drive device mounted on the outside of the compression cleaning pipe to move. This, in turn, moves the residual liquid cleaning head, which is slidably connected inside the compression cleaning pipe, toward the discharge channel of the heated conveying head until its front end contacts the inner wall of the discharge channel. The rotary drive device drives the residual liquid cleaning head to rotate at high speed. The evenly distributed scrapers on its outer side generate friction with the residual aluminum liquid adhering to the inner wall of the discharge channel, scraping away the aluminum liquid. Simultaneously, the high-pressure air supply pipe connected to the residual liquid cleaning head delivers high-pressure airflow. The airflow is ejected from the evenly distributed jet nozzles on the residual liquid cleaning head, entering the gap between the contact head and the inner wall of the discharge channel, concentrating its action on the scraped residual liquid, and rapidly ejecting it out of the discharge channel, achieving comprehensive and efficient cleaning.

[0073] Simultaneously, the feed pipe unblocking device activates to clean the inner wall of the feed pipe, removing any adhering residual molten aluminum. After cleaning, the movable end of the rotary switching device actuates again, resetting the feed pipe and compression cleaning pipe to their initial positions, ready for the next use. This device, through this operating method, effectively improves the cleaning effect of residual molten aluminum in the injection channel, enhances production stability, and reduces maintenance costs.

[0074] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An aluminum alloy die-casting device for preventing internal residual liquid blockage, comprising an anti-clogging injection head mounted on a die-casting mold (1); characterized in that, The anti-clogging injection head includes a heated feeding head (2), a dredging and cleaning device (3), and a material pipe dredging device (4); The heating conveying head (2) is fixedly installed on the die casting mold (1). The output end of the heating conveying head (2) is connected to the inside of the die casting mold (1). The heating conveying head (2) is also provided with a switching installation area. The unblocking and cleaning device (3) is set on the side of the heating conveying head (2). The unblocking and cleaning device (3) includes a rotary switching device (33). The movable end of the rotary switching device (33) is equipped with a feed pipe (31) and a compression cleaning pipe (32). The feed pipe (31) is used to guide the flow of die casting liquid, and the compression cleaning pipe (32) is used to clean the heating conveying head (2). The material pipe unblocking device (4) is installed on the unblocking and cleaning device (3). The material pipe unblocking device (4) is used to clean the inner wall of the material inlet pipe (31).

2. The aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 1, characterized in that, The heating conveying head (2) has an internal discharge channel (23) that is connected to the die-casting mold (1). The heating conveying head (2) has a docking channel (24) at one end away from the discharge channel (23). A switching installation area is provided between the docking channel (24) and the discharge channel (23). The switching installation area is used to connect the unblocking and cleaning device (3). A docking fixing device (25) is also installed on the heating conveying head (2). A heating component (22) is also installed inside the heating conveying head (2).

3. The aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 2, characterized in that, The docking fixing device (25) includes a first linear actuator (251), a connecting block (252), a first docking sealing ring (253), a second docking sealing ring (254), and a connecting rod (255); The first mating sealing ring (253) is slidably installed on the discharge channel (23); The second docking sealing ring (254) is slidably installed on the docking channel (24); The first linear actuator (251) is fixedly installed on the heating feed head (2), and a connecting block (252) is installed on the output end of the first linear actuator (251). Multiple connecting rods (255) are provided and distributed on the first mating sealing ring (253) and the second mating sealing ring (254). The connecting rods (255) are rotatably connected to the first mating sealing ring (253) and the second mating sealing ring (254). The connecting rods (255) are rotatably connected to the connecting block (252) away from the first mating sealing ring (253) and the second mating sealing ring (254).

4. The aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 1, characterized in that, The feed pipe (31) has a feed hole (312) inside, and the feed pipe (31) has a first docking groove (311) at both the front and rear ends, and an outer groove (313) on the outside of the feed pipe (31).

5. The aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 1, characterized in that, The front and rear ends of the compression cleaning tube (32) are provided with rotating docking rings (321), and the rotating docking rings (321) are provided with second docking grooves (3211). The compression cleaning tube (32) is rotatably connected to the rotating docking rings (321). The outer side of the compression cleaning tube (32) is provided with connecting grooves (322). The inside of the compression cleaning tube (32) is slidably installed with a residual liquid cleaning head (323). The residual liquid cleaning head (323) is connected to the high-pressure gas transmission pipe (324). The outer side of the compression cleaning tube (32) is also equipped with a rotary drive device (325). The drive end of the rotary drive device (325) is fixedly connected to the residual liquid cleaning head (323). The compression cleaning tube (32) also includes a second linear driver (326) installed on the rotary switching device (33). The output end of the second linear driver (326) is connected to the rotary drive device (325).

6. The aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 5, characterized in that, The residual liquid cleaning head (323) is provided with a detachable contact head (3232), and multiple scraper strips (3233) are evenly distributed on the outer side of the contact head (3232). The residual liquid cleaning head (323) is also provided with multiple evenly distributed jet heads (3231).

7. The aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 1, characterized in that, The rotary switching device (33) includes a mounting bracket (331), a rotating mounting bracket (332), and a rotary drive (333). The mounting bracket (331) is fixedly installed on the die-casting mold (1); The rotating mounting bracket (332) is rotatably mounted on the mounting bracket (331), and the two ends of the rotating mounting bracket (332) are fixedly connected to the feed pipe (31) and the compression cleaning pipe (32) respectively; The rotary driver (333) is fixedly mounted on the mounting bracket (331), and the output end of the rotary driver (333) is connected to the rotating mounting bracket (332) for transmission.

8. An aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 4, characterized in that, The pipe clearing device (4) includes a push-and-clean mechanism (41) and a limiting component (42). The push cleaning mechanism (41) is fixedly installed on the rotary switching device (33), and the push cleaning mechanism (41) is used to clean the inside of the feed pipe (31); The limiting component (42) is installed on the rotary switching device (33) and is used to limit and fix the position of the feed tube (31).

9. An aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 8, characterized in that, The jacking cleaning mechanism (41) includes a third linear actuator (411) and a dredging cleaning column (412). The third linear actuator (411) is fixedly mounted on the rotary switching device (33); The unblocking and cleaning column (412) is fixedly installed at the output end of the third linear actuator (411).

10. An aluminum alloy die-casting device for avoiding internal residual liquid blockage according to claim 9, characterized in that, The limiting assembly (42) includes an L-shaped snap-fit ​​bracket (421), a return spring (422), and a linkage push bracket (423). The L-shaped card holder (421) is slidably mounted on the rotary switching device (33). One end of the L-shaped card holder (421) is provided with a U-shaped card slot (4211), and the end of the L-shaped card holder (421) away from the U-shaped card slot (4211) is provided with a guide angle (4212). The reset spring (422) is disposed between the L-shaped card holder (421) and the rotary switching device (33); The linkage pusher (423) is fixedly installed on the side of the dredging and cleaning column (412).

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