Die casting device for thin-wall aluminum alloy die casting

Abstract

The invention discloses a die-casting device for thin-wall aluminum alloy die castings, and particularly relates to the technical field of jet die-casting, which comprises a fixed die-casting die, a jet inlet pipe, a butt joint jet pipe and a jet die-casting vertical safety protection mechanism, the jet die-casting vertical safety protection mechanism comprises a sliding frame, a linkage screw and a gear motor, and further comprises a jet die-casting transverse safety protection mechanism and a jet die-casting leakage detection assembly. The injection die-casting vertical safety protection mechanism has the advantages that the problem of leakage of aluminum alloy molten liquid in the injection die-casting process can be known in time, the aluminum alloy molten liquid in the injection die-casting process can be sealed and protected in time, and the injection die-casting safety is greatly improved; therefore, the problems that the leakage problem of the molten aluminum alloy in the jet die-casting process is difficult to know in time, the molten aluminum alloy in the jet die-casting process is difficult to seal and protect in time, and the use safety of jet die-casting is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection die casting, and more specifically, to a die casting device for thin-walled aluminum alloy die castings. Background Art

[0002] The principle of the die casting device for thin-walled aluminum alloy injection die casting is mainly based on the process of injecting molten metal into the cavity of a precision metal mold at high speed and high pressure, and cooling and solidifying it into a casting under pressure. The main part is the injection mechanism, which is responsible for injecting the molten aluminum alloy liquid into the mold cavity at high speed and high pressure. Ensure that the movable mold and the fixed mold are tightly closed during the die casting process to prevent the leakage of molten metal, so that thin-walled aluminum alloy can be formed by injection die casting.

[0003] In the existing public documents, the patent announcement number CN118477978A discloses a die-casting device for aluminum alloy die-casting parts. This technology can avoid excessive wear inside the mold cavity caused by premature solidification of the molten aluminum alloy material, and use the heat generated when the molten aluminum alloy material is cooled to gradually and specifically cool the inside of the mold cavity, thereby improving the molding quality of thin-walled aluminum alloy products. At the same time, based on the amount of air discharged from the die-casting mold cavity, it can automatically assist in the discharge of air from the molten aluminum alloy material, and remind personnel to promptly repair the die-casting mold when it is excessively worn. However, this technology still has the following problems.

[0004] When thin-walled aluminum alloy die-castings are subjected to injection die-casting, the aluminum alloy melt is mainly injected into the die-casting mold cavity at high speed under high pressure for molding. However, during the injection process, the injection pressure at the injection pipe and the die-casting mold docking pipe is relatively high, while the vertical cross-sectional area of ​​the die-casting mold docking pipe is relatively small. As a result, the connection between the die-casting mold docking pipe and the injection pipe is prone to excessive pressure, resulting in a gap problem. As a result, the aluminum alloy melt is prone to leakage and overflow. The overflowing aluminum alloy melt is prone to cause a fire at the work station, resulting in a major safety problem. This makes it difficult to promptly know the leakage of the aluminum alloy melt during the injection die-casting process, and it is difficult to promptly seal and protect the aluminum alloy melt during the injection die-casting process, resulting in poor safety in the use of injection die-casting. For this reason, a die-casting device for thin-walled aluminum alloy die-castings is required. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: a die-casting device for thin-walled aluminum alloy die-casting parts, comprising a fixed die-casting mold, one side of the fixed die-casting mold is fixedly connected with an injection inlet pipe, one end of the injection inlet pipe is provided with a fixedly connected butt nozzle, and one side of the butt nozzle is provided with a vertical safety protection mechanism for injection die-casting; The injection die-casting vertical safety protection mechanism includes a sliding frame arranged on one side of the docking nozzle, and the sliding frame is rotatably connected to a linkage screw rod inside, a reduction motor is fixedly installed on the top of the sliding frame, and the reduction motor is used to drive the linkage screw rod to rotate. The outer wall of the linkage screw is threadedly connected to two linkage sleeve blocks, and the two threads on the outer wall of the linkage screw are opposite and symmetrically opened, and the two linkage sleeve blocks are both slidably connected to the sliding frame.

[0006] A pressure strip is fixedly connected to one side of each linkage block, and an arc-shaped pressure plate is fixedly connected to the lower surface of the linkage block, an extrusion sealing gasket is fixedly connected to the inner wall of the arc-shaped pressure plate, a lateral sealing gasket is fixedly connected to one side of the arc-shaped pressure plate, and an angle sensor is fixedly connected to the bottom end of the linkage screw; a jet die-casting lateral safety protection mechanism is provided on one side of the slide frame; a jet die-casting leakage detection component is provided on the outer wall of the docking nozzle.

[0007] Preferably, the reduction motor is used to drive the linkage screw to rotate, and the outer walls of the two linkage sleeves and the inner wall of the slide frame are smooth surfaces. The vertical cross-section of the extrusion seal is an arc shape, and the two extrusion seals are symmetrically arranged about the docking nozzle; a gap is provided between the lateral seal and the fixed die-casting mold.

[0008] Preferably, a support block is provided on one side of the angle sensor, and the slide frame and the angle sensor are fixedly connected to the support block; the other side of each of the linkage sleeve blocks is slidably connected with a sleeve slider, and the two sleeve sliders are fixedly connected to the slide frame, and the inner wall of each sleeve slider is slidably connected with a guide rod, and the two guide rods are fixedly connected to the fixed die-casting mold. One end of the docking nozzle is fixedly connected to a die-casting spray tank, and the inner wall of the die-casting spray tank is slidably connected to a booster plate, a pressure electric cylinder is fixedly installed on one side of the booster plate, and the outer wall of the output end of the pressure electric cylinder is slidably connected to the die-casting spray tank; a support seat is fixedly installed at the bottom end of the pressure electric cylinder, and a support base plate is fixedly connected to the bottom end of the support seat, a feed valve is fixedly connected to the top of the outer wall of the die-casting spray tank, a negative pressure valve is fixedly connected to the upper surface of the fixed die-casting mold, and guide columns are slidably connected to the inner wall of the fixed die-casting mold and near its four corner lines; a molding die is installed at one end of the guide column, and multiple guide columns are fixedly connected to the molding die. A shaping electric cylinder is fixedly installed on one side of the support base, and the outer wall of the output end of the shaping electric cylinder is slidably connected to the support base, and the output end of the shaping electric cylinder is fixedly connected to the molding die; a controller is provided on one side of the shaping electric cylinder, and the controller is fixedly connected to the support base.

[0009] When this technology is used for injection die-casting, the linkage screw is driven to rotate by the reduction motor, and the linkage screw drives the two linkage sleeves to move closer to each other under the action of the thread transmission force, so that the linkage sleeve drives the pressure strip to move downward, so that the arc pressure plate is squeezed and fitted to the top position of the outer wall of the die-casting spray tank, and the other arc pressure plate is squeezed and fitted to the bottom position of the outer wall of the die-casting spray tank. The two extrusion sealing pads are squeezed and contacted vertically. The angle sensor senses the torque value of the linkage screw. When the torque value sensed by the angle sensor is the same as the torque value set by the controller, the reduction motor is turned off by the controller.

[0010] Preferably, the injection die-casting lateral safety protection mechanism includes a support frame slidably arranged on one side of the sliding frame; the support frame is fixedly connected to the fixed die-casting mold, the interior of the support frame is fixedly connected with a sliding column, the outer wall of the sliding column is slidably connected with an articulated sleeve block, the articulated sleeve block is fixedly connected to the sliding frame, and the articulated sleeve block is slidably connected to the support frame, and a pull shaft is fixedly installed on the bottom end of the inner wall of the articulated sleeve block.

[0011] The outer wall of the pulling shaft is rotatably connected with a sleeve shaft, and the inner wall of the sleeve shaft is rotatably connected with a linkage shaft at a position away from the pulling shaft. A concave block is fixedly installed at the bottom end of the linkage shaft, and the concave block is slidably connected to the fixed die-casting mold; a push block is fixedly connected to the bottom end of the concave block, a pressure sensor is fixedly installed on one side of the push block, and the sensing end of the pressure sensor is fixedly connected with an extrusion electric cylinder, and the extrusion electric cylinder is fixedly connected to the fixed die-casting mold. The vertical cross-section of the concave block is concave, and the push block is slidably connected to the fixed die-casting mold.

[0012] When this technology is used for injection die-casting, the extrusion electric cylinder pushes the pressure sensor forward, the push block drives the concave block forward, and the linkage shaft drives one end of the sleeve shaft forward. The pull shaft drives the articulated sleeve block to move left, and the articulated sleeve block slides left along the outer wall of the slide column, and the slide frame drives the two sleeve slide blocks to move left synchronously, and the sleeve slide blocks slide left along the outer wall of the guide rod. The linkage screw drives the two linkage sleeve blocks to move left synchronously, the pressure strip drives the arc pressure plate to move left, and the extrusion sealing gasket moves left along the outer wall of the die-casting injection tank, so that the lateral sealing gasket is squeezed on the side of the fixed die-casting mold for sealing protection. When the pressure value sensed by the pressure sensor is the same as the pressure value set by the controller, the extrusion electric cylinder is closed by the controller.

[0013] Preferably, the injection die-casting leakage detection assembly comprises a limit ring fixedly arranged on the outer wall of the butt nozzle; a curved material plate is fixedly connected to one side of the limit ring, and the curved material plate is fixedly connected to the fixed die-casting mold, and a guide groove is provided on the inner wall of the curved material plate; A collar is installed on the inner wall of the guide groove, and the collar is fixedly connected to the arc-shaped material plate. A high-temperature resistant distance sensor is fixedly installed on the inner wall of the collar, and two limit plates are fixedly connected to the upper surface of the arc-shaped material plate. The vertical cross-section of the limit ring is circular, and the two limit plates are fixedly connected to the limit ring.

[0014] When this technology is used in injection die-casting, the limit ring supports the arc-shaped material plate, and the arc-shaped material plate can provide supporting force for the two limit plates, so that the aluminum alloy melt leaked from the lower row will enter the gap between the two injection inlet pipes, and the limit ring will limit and support the arc-shaped material plate, so that the aluminum alloy melt will flow and gather to the upper surface of the high-temperature resistant distance sensor, so that the high-temperature resistant distance sensor can be blocked by the aluminum alloy melt, thereby changing the distance value sensed by the high-temperature resistant distance sensor.

[0015] Technical effects and advantages of the present invention: The present invention provides a vertical safety protection mechanism for jet die-casting. When the aluminum alloy melt leaks at the connection between the jet inlet pipe and the docking nozzle, the linkage screw is driven to rotate by the reduction motor. The linkage screw drives the two linkage sleeves to approach each other under the action of the thread transmission force. The arc pressure plate is squeezed and fitted at the top position of the outer wall of the die-casting spray tank, and the other arc pressure plate is squeezed and fitted at the bottom position of the outer wall of the die-casting spray tank. When the torque force value sensed by the angle sensor is the same as the torque force value set by the controller, the reduction motor is turned off by the controller, and the two extrusion sealing pads can be fitted on the outer wall of the die-casting spray tank according to the specified extrusion force to perform vertical safety protection. The leakage of the aluminum alloy melt in the jet die-casting process can be timely known, and the aluminum alloy melt in the jet die-casting process can be sealed and protected in time, thereby greatly improving the safety of the jet die-casting.

[0016] The present invention adopts a lateral safety protection mechanism for injection die casting, the extrusion electric cylinder pushes the pressure sensor forward, the pressure sensor drives the push block forward, the concave block causes the linkage shaft to move forward, the linkage shaft drives one end of the sleeve shaft to move forward, the pull shaft drives the hinged sleeve block to move left, the hinged sleeve block slides leftward along the inner wall of the support frame, the slide frame drives the two sleeve slide blocks to move left synchronously, the linkage screw drives the two linkage sleeve blocks to move left synchronously, the arc pressure plate drives the extrusion sealing gasket to move left, the arc pressure plate drives the lateral sealing gasket to move left, so that the two arc pressure plates can perform lateral safety protection on the leaked aluminum alloy molten liquid, can timely perform sealing protection on the aluminum alloy molten liquid in the injection die casting process, and greatly improve the safety of injection die casting.

[0017] The present invention utilizes a jet die-casting leakage detection component, and the arc-shaped material plate can provide supporting force for the two limit plates, so that the leaked lower row of aluminum alloy molten liquid will enter the gap between the two jet inlet pipes, and the limit ring will limit and support the arc-shaped material plate, so that the aluminum alloy molten liquid will flow and gather to the upper surface of the high-temperature resistant distance sensor, and the high-temperature resistant distance sensor can be blocked by the aluminum alloy molten liquid, so that the distance value sensed by the high-temperature resistant distance sensor changes, and the reduction motor is immediately started to perform vertical safety protection operations, so that the leakage problem of aluminum alloy molten liquid in the jet die-casting process can be known in time, and the safety of the jet die-casting is greatly improved.

[0018] According to the mutual influence of the above-mentioned multiple effects, the aluminum alloy melt will first flow and gather to the upper surface of the high temperature resistant distance sensor, and the distance value sensed by the high temperature resistant distance sensor will change, and then the two extrusion sealing pads will be able to fit on the outer wall of the die-casting spray tank according to the specified extrusion force, and the two arc-shaped pressure plates will be vertically extruded and contacted with each other, and the two extrusion sealing pads will be vertically extruded and contacted, and finally the two lateral sealing pads will be moved to the left and extruded and fit on the fixed die-casting mold. In summary, the leakage of aluminum alloy melt during the injection die-casting process can be known in time, and the aluminum alloy melt during the injection die-casting process can be vertically and horizontally sealed and protected in time, which greatly improves the safety of injection die-casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front structural view of the die-casting device of the thin-walled aluminum alloy die-casting part of the present invention.

[0020] Figure 2 It is a schematic diagram of the rear structural view of the die-casting device of the thin-walled aluminum alloy die-casting part of the present invention.

[0021] Figure 3 It is a schematic diagram of the partial structure of the connection between the sliding frame and the linkage screw rod of the present invention.

[0022] Figure 4 It is a schematic diagram of the partial structure of the connection between the angle sensor and the linkage screw of the present invention.

[0023] Figure 5 It is a schematic diagram of the vertical cross-section structure of the die-casting device of the thin-walled aluminum alloy die-casting part of the present invention.

[0024] Figure 6 It is a schematic diagram of the partial structure of the connection between the hinged sleeve block and the sliding frame of the present invention.

[0025] Figure 7 It is a schematic diagram of the partial structure of the injection die-casting lateral safety protection mechanism of the present invention.

[0026] Figure 8 It is a schematic diagram of the local structure of the vertical section top view of the connection between the fixed die casting mold and the injection inlet pipe of the present invention.

[0027] Fig. 9 For the present invention Figure 8 Enlarged structural diagram at B in the middle.

[0028] Fig.10 It is a schematic diagram of the partial structure of the injection die casting leakage detection component of the present invention from a front view.

[0029] The accompanying drawings are marked as follows: 1, fixed die-casting mold; 2, injection inlet pipe; 3, docking nozzle; 4, slide frame; 5, linkage screw; 6, reduction motor; 7, linkage sleeve block; 8, pressure strip; 9, arc pressure plate; 10, extrusion sealing pad; 11, lateral sealing pad; 12, angle sensor; 13, support block; 14, sleeve slider; 15, guide rod; 16, die-casting injection tank; 17, booster plate; 18, pressure electric cylinder; 19, support seat; 20, support bottom plate; 21, feed Valve; 22. Negative pressure valve; 23. Guide column; 24. Forming die; 25. Forming electric cylinder; 26. Controller; 27. Support frame; 28. Sliding column; 29. ​​Articulated sleeve block; 30. Pull shaft; 31. Sleeve shaft; 32. Linkage shaft; 33. Concave block; 34. Push block; 35. Pressure sensor; 36. Extrusion electric cylinder; 37. Limit ring; 38. Arc material plate; 39. Guide groove; 40. Sleeve ring; 41. High temperature resistant distance sensor; 42. Limit plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] As attached Figure 1 - Attachment Fig.10 The die-casting device for thin-walled aluminum alloy die-casting parts shown in the figure is provided with a jet die-casting vertical safety protection mechanism, a jet die-casting lateral safety protection mechanism, and a jet die-casting leakage detection component. The settings of various mechanisms and components can timely know the leakage problem of aluminum alloy melt in the jet die-casting process, and can promptly perform vertical and lateral sealing protection on the aluminum alloy melt in the jet die-casting process, thereby greatly improving the safety of jet die-casting. The specific structural settings of various mechanisms and components are as follows.

[0032] In this embodiment, as shown in the attached Figure 1-4As shown, one side of the fixed die-casting mold 1 is fixedly connected with an injection inlet pipe 2, one end of the injection inlet pipe 2 is provided with a fixedly connected docking nozzle 3, and one side of the docking nozzle 3 is provided with an injection die-casting vertical safety protection mechanism; the injection die-casting vertical safety protection mechanism includes a sliding frame 4 arranged on one side of the docking nozzle 3, and the interior of the sliding frame 4 is rotatably connected with a linkage screw 5, and the top of the sliding frame 4 is fixedly installed with a reduction motor 6, the reduction motor 6 is used to drive the linkage screw 5 to rotate, the outer wall of the linkage screw 5 is threadedly connected with two linkage sleeve blocks 7, the two threads on the outer wall of the linkage screw 5 are opposite and symmetrically opened, and the two linkage sleeve blocks 7 are both slidably connected with the sliding frame 4.

[0033] A pressure strip 8 is fixedly connected to one side of each linkage block 7, and an arc-shaped pressure plate 9 is fixedly connected to the lower surface of the linkage block 7, an extrusion sealing pad 10 is fixedly connected to the inner wall of the arc-shaped pressure plate 9, a lateral sealing pad 11 is fixedly connected to one side of the arc-shaped pressure plate 9, and an angle sensor 12 is fixedly connected to the bottom end of the linkage screw 5; an injection die-casting lateral safety protection mechanism is provided on one side of the slide frame 4; and an injection die-casting leakage detection component is provided on the outer wall of the docking nozzle 3.

[0034] In this embodiment, as shown in the attached Figure 3 - Attachment Figure 4 As shown, a support block 13 is provided on one side of the angle sensor 12, and the slide frame 4 and the angle sensor 12 are fixedly connected to the support block 13, so that the support block 13 supports the angle sensor 12 and increases the stability of the angle sensor 12; the other side of each linkage sleeve block 7 is slidably connected with a sleeve slider 14, and the two sleeve sliders 14 are fixedly connected to the slide frame 4, and the inner wall of each sleeve slider 14 is slidably connected with a guide rod 15, and the two guide rods 15 are fixedly connected to the fixed die-casting mold 1, so that the slide frame 4 drives the two sleeve sliders 14 to move left synchronously, and the sleeve slider 14 slides to the left along the outer wall of the guide rod 15, so that the slide frame 4 can achieve guided left movement.

[0035] In this embodiment, as shown in the attached Figure 5 As shown, one end of the docking nozzle 3 is fixedly connected to a die-casting spray tank 16, and the inner wall of the die-casting spray tank 16 is slidably connected to a booster plate 17, a pressure electric cylinder 18 is fixedly installed on one side of the booster plate 17, and the outer wall of the output end of the pressure electric cylinder 18 is slidably connected to the die-casting spray tank 16; a support seat 19 is fixedly installed at the bottom end of the pressure electric cylinder 18, and a support bottom plate 20 is fixedly connected to the bottom end of the support seat 19, a feed valve 21 is fixedly connected to the top of the outer wall of the die-casting spray tank 16, a negative pressure valve 22 is fixedly connected to the upper surface of the fixed die-casting mold 1, and guide columns 23 are slidably connected to the inner wall of the fixed die-casting mold 1 and near its four corner lines; a molding die 24 is installed at one end of the guide column 23.

[0036] The plurality of guide posts 23 are fixedly connected to the forming die 24. A shaping electric cylinder 25 is fixedly installed on one side of the support base plate 20. The outer wall of the output end of the shaping electric cylinder 25 is slidably connected to the support base plate 20, and the output end of the shaping electric cylinder 25 is fixedly connected to the forming die 24. A controller 26 is provided on one side of the shaping electric cylinder 25, and the controller 26 is fixedly connected to the support base plate 20. In order to facilitate the shaping electric cylinder 25 to push the forming die 24 to move right, the forming die 24 and the fixed die-casting die 1 are squeezed and molded together, and at the same time, the negative pressure pump pipe is connected to the negative pressure valve 22, so that the air inside the forming cavity of the thin-walled aluminum alloy casting can be discharged. Then the molding electric cylinder 25 closes the negative pressure valve 22 and pours the molten aluminum alloy into the feed valve 21. When the die-casting spray tank 16 is filled, the feed valve 21 is closed, and the pressure electric cylinder 18 drives the booster plate 17 to move leftward for extrusion, so that the molten aluminum alloy in the die-casting spray tank 16 enters the docking nozzle 3, and then enters the injection inlet pipe 2 from the docking nozzle 3, and the injection inlet pipe 2 enters the fixed die-casting mold 1, so that the molten aluminum alloy is subjected to injection die-casting operation in the molding cavity.

[0037] In this embodiment, as shown in the attached Figure 6 - Attachment Figure 7 As shown, the injection die-casting lateral safety protection mechanism includes a support frame 27 slidably arranged on one side of the slide frame 4; the support frame 27 is fixedly connected to the fixed die-casting mold 1, and a slide column 28 is fixedly connected to the inside of the support frame 27, and an articulated sleeve 29 is slidably connected to the outer wall of the slide column 28, the articulated sleeve 29 is fixedly connected to the slide frame 4, and the articulated sleeve 29 is slidably connected to the support frame 27, and a pull shaft 30 is fixedly installed on the bottom end of the inner wall of the articulated sleeve 29.

[0038] The outer wall of the pull shaft 30 is rotatably connected with a sleeve shaft 31, and the inner wall of the sleeve shaft 31 is rotatably connected with a linkage shaft 32 at a position away from the pull shaft 30. A concave block 33 is fixedly installed at the bottom end of the linkage shaft 32, and the concave block 33 is slidably connected to the fixed die-casting mold 1; a push block 34 is fixedly connected to the bottom end of the concave block 33, and a pressure sensor 35 is fixedly installed on one side of the push block 34, and the sensing end of the pressure sensor 35 is fixedly connected with an extrusion electric cylinder 36, and the extrusion electric cylinder 36 is fixedly connected to the fixed die-casting mold 1. The vertical cross-section of the concave block 33 is concave, and the push block 34 is slidably connected to the fixed die-casting mold 1.

[0039] In this embodiment, as shown in the attached Figure 8 - Attachment Fig.10As shown, the injection die casting leakage detection assembly includes a limit ring 37 fixedly arranged on the outer wall of the docking nozzle 3; an arc-shaped material plate 38 is fixedly connected to one side of the limit ring 37, and the arc-shaped material plate 38 is fixedly connected to the fixed die casting mold 1, and a guide groove 39 is opened on the inner wall of the arc-shaped material plate 38; a collar 40 is installed on the inner wall of the guide groove 39, and the collar 40 is fixedly connected to the arc-shaped material plate 38, and a high temperature resistant distance sensor 41 is fixedly installed on the inner wall of the collar 40, and two limit plates 42 are fixedly connected to the upper surface of the arc-shaped material plate 38. The vertical cross-section of the limit ring 37 is circular, and the two limit plates 42 are fixedly connected to the limit ring 37.

[0040] The working principle of the die-casting device of the thin-walled aluminum alloy die-casting of the present invention is as follows: Step 1: When the thin-walled aluminum alloy casting is jet die-casted, the shaping electric cylinder 25 is supported by the supporting base plate 20, and the supporting base plate 20 supports the controller 26. The controller 26 starts the shaping electric cylinder 25, and the shaping electric cylinder 25 pushes the forming die 24 to move right, and the forming die 24 and the fixed die-casting die 1 are squeezed and molded, so that a molding cavity of the thin-walled aluminum alloy casting is formed between the fixed die-casting die 1 and the injection inlet pipe 2. At the same time, the negative pressure pump pipe is docked on the negative pressure valve 22. Opening the negative pressure valve 22 can discharge the air inside the molding cavity of the thin-walled aluminum alloy casting. Then the shaping electric cylinder 25 closes the negative pressure valve 22, and at the same time, the feed valve 21 is docked with the aluminum alloy molten liquid pipeline, and the aluminum alloy molten liquid is poured into the feed valve 21, and enters the die-casting injection tank 16 through the feed valve 21. When the die-casting spray tank 16 is filled, the feed valve 21 is closed, so that the molding electric cylinder 25 starts the pressure electric cylinder 18, and the support base 20 provides support force to the support seat 19, and the support seat 19 supports the pressure electric cylinder 18, and the pressure electric cylinder 18 drives the booster plate 17 to move leftward and squeeze, so that the aluminum alloy melt inside the die-casting spray tank 16 enters the docking nozzle 3, and enters the injection inlet pipe 2 from the docking nozzle 3, and the injection inlet pipe 2 enters the fixed die-casting mold 1, so that the aluminum alloy melt is subjected to injection die-casting operation in the molding cavity, and after cooling, it is formed into a thin-walled aluminum alloy casting. When the aluminum alloy melt leaks at the connection between the injection inlet pipe 2 and the docking nozzle 3.

[0041] Step 2, during the injection die-casting leakage detection, the limit ring 37 is supported by the docking nozzle 3, and the limit ring 37 supports the arc material plate 38. The arc material plate 38 can provide support force for the two limit plates 42, so that the leaked lower row of aluminum alloy molten liquid will enter the gap between the two injection inlet pipes 2, and the aluminum alloy molten liquid will slide down along the inner wall of the arc material plate 38. At the same time, the limit ring 37 will limit and support the arc material plate 38, so that the aluminum alloy molten liquid will flow and gather to the upper surface of the high temperature resistant distance sensor 41, and the arc material plate 38 supports the ring 40, and the ring 40 supports the high temperature resistant distance sensor 41, so that the high temperature resistant distance sensor 41 can be blocked by the aluminum alloy molten liquid, so that the distance value sensed by the high temperature resistant distance sensor 41 changes, so that the controller 26 immediately starts the reduction motor 6 for vertical safety protection.

[0042] Step 3: When performing vertical safety protection for injection die casting, the linkage screw 5 is driven to rotate by the reduction motor 6, and the linkage screw 5 rotates inside the slide frame 4. At the same time, the linkage screw 5 drives the two linkage blocks 7 to approach each other under the action of the thread transmission force, and the linkage block 7 moves down, while the other linkage block 7 moves up, so that the linkage block 7 drives the pressure strip 8 to move down, and the pressure strip 8 drives the arc pressure plate 9 to move down, so that the arc pressure plate 9 is pressed and fitted at the top position of the outer wall of the die-casting injection tank 16, and the other arc pressure plate 9 is pressed and fitted at the bottom end position of the outer wall of the die-casting injection tank 16. At the same time, the two arc pressure plates 9 are vertically pressed and contacted with each other, and the two extrusion sealing pads 10 are vertically pressed and contacted. At the same time, the support block 13 supports the angle sensor 12, and the angle sensor 12 senses the torque value of the linkage screw 5. When the torque value sensed by the angle sensor 12 is the same as the torque value set by the controller 26, the reduction motor 6 is turned off through the controller 26, so that the two extrusion sealing pads 10 can fit on the outer wall of the die-casting injection tank 16 according to the specified extrusion pressure to perform vertical safety protection.

[0043] Step 4: When performing the horizontal safety protection of the injection die casting, the controller 26 is used to start the extrusion electric cylinder 36, which pushes the pressure sensor 35 forward, and the pressure sensor 35 drives the push block 34 forward, and the push block 34 drives the concave block 33 forward, and the concave block 33 makes the linkage shaft 32 move forward, and the linkage shaft 32 drives one end of the sleeve shaft 31 to move forward. At the same time, the sleeve shaft 31 drives the pull shaft 30 to move left, and the pull shaft 30 drives the articulated sleeve block 29 to move left, and the articulated sleeve block 29 slides left along the inner wall of the support frame 27, and at the same time, the articulated sleeve block 29 slides left along the outer wall of the slide column 28, and the articulated sleeve block 29 makes the slide frame 4 slide left, and the slide frame 4 drives the two sleeve slide blocks 14 to move left synchronously, and the sleeve slide blocks 14 slide left along the outer wall of the guide rod 15.

[0044] At the same time, the sliding frame 4 drives the linkage screw 5 to move left, the linkage screw 5 drives the two linkage blocks 7 to move left synchronously, the linkage block 7 drives the pressure strip 8 to move left, the pressure strip 8 drives the arc pressure plate 9 to move left, and the arc pressure plate 9 drives the extrusion sealing pad 10 to move left. At the same time, the extrusion sealing pad 10 moves left along the outer wall of the die-casting spray tank 16, and the arc pressure plate 9 drives the lateral sealing pad 11 to move left, so that the lateral sealing pad 11 is squeezed on the side of the fixed die-casting mold 1 for sealing protection. When the pressure value sensed by the pressure sensor 35 is the same as the pressure value set by the controller 26, the extrusion electric cylinder 36 is closed by the controller 26, so that the two arc pressure plates 9 can perform lateral safety protection on the leaked aluminum alloy melt, prevent the aluminum alloy melt from continuing to leak out, avoid fire safety hazards, and greatly improve the safety of injection die casting.

[0045] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A die-casting device for thin-walled aluminum alloy die-castings, comprising a fixed die-casting mold (1), Features: One side of the fixed die-casting mold (1) is fixedly connected to an injection inlet pipe (2), one end of the injection inlet pipe (2) is provided with a fixedly connected butt nozzle (3), and one side of the butt nozzle (3) is provided with a vertical safety protection mechanism for injection die-casting; The injection die casting vertical safety protection mechanism comprises a slide frame (4) arranged on one side of the docking nozzle (3), and a linkage screw (5) is rotatably connected inside the slide frame (4), a reduction motor (6) is fixedly installed on the top of the slide frame (4), and the reduction motor (6) is used to drive the linkage screw (5) to rotate, and the outer wall of the linkage screw (5) is threadedly connected to two linkage sleeve blocks (7), and the two threads on the outer wall of the linkage screw (5) are opposite and symmetrically opened, and the two linkage sleeve blocks (7) are both slidably connected to the slide frame (4); A pressure strip (8) is fixedly connected to one side of each linkage sleeve (7), and an arc-shaped pressure plate (9) is fixedly connected to the lower surface of the linkage sleeve (7), an extrusion sealing pad (10) is fixedly connected to the inner wall of the arc-shaped pressure plate (9), a lateral sealing pad (11) is fixedly connected to one side of the arc-shaped pressure plate (9), and an angle sensor (12) is fixedly connected to the bottom end of the linkage screw rod (5); A side of the slide frame (4) is provided with an injection die-cast lateral safety protection mechanism; The outer wall of the butt nozzle (3) is provided with a jet die-casting leakage detection component.

2. The die-casting device for thin-walled aluminum alloy die-casting according to claim 1, Features: The reduction motor (6) is used to drive the linkage screw (5) to rotate, and the outer walls of the two linkage sleeve blocks (7) and the inner wall of the slide frame (4) are both smooth surfaces.

3. The die-casting device for thin-walled aluminum alloy die-casting according to claim 1, Features: The vertical cross-section of the extrusion sealing pad (10) is in the shape of an arc, and the two extrusion sealing pads (10) are symmetrically arranged with respect to the butt nozzle (3); A gap is provided between the lateral sealing gasket (11) and the fixed die-casting mold (1).

4. The die-casting device for thin-walled aluminum alloy die-casting according to claim 1, Features: A support block (13) is provided on one side of the angle sensor (12), and the sliding frame (4) and the angle sensor (12) are both fixedly connected to the support block (13); The other side of each linkage sleeve block (7) is slidably connected to a sleeve slider (14), and the two sleeve sliders (14) are fixedly connected to the slide frame (4). The inner wall of each sleeve slider (14) is slidably connected to a guide rod (15), and the two guide rods (15) are fixedly connected to the fixed die-casting mold (1).

5. The die-casting device for thin-walled aluminum alloy die-casting according to claim 1, Features: One end of the butt nozzle (3) is fixedly connected to a die-casting spray tank (16), and the inner wall of the die-casting spray tank (16) is slidably connected to a booster plate (17), a pressure electric cylinder (18) is fixedly mounted on one side of the booster plate (17), and the outer wall of the output end of the pressure electric cylinder (18) is slidably connected to the die-casting spray tank (16); A support seat (19) is fixedly mounted on the bottom end of the pressure electric cylinder (18), a support base plate (20) is fixedly connected to the bottom end of the support seat (19), a feed valve (21) is fixedly connected to the top of the outer wall of the die-casting spray tank (16), a negative pressure valve (22) is fixedly connected to the upper surface of the fixed die-casting mold (1), and guide pillars (23) are slidably connected to the inner wall of the fixed die-casting mold (1) near the four corner lines thereof; A forming die (24) is installed at one end of the guide column (23), and a plurality of the guide columns (23) are fixedly connected to the forming die (24).

6. The die-casting device for thin-walled aluminum alloy die-casting according to claim 5, Features: A shaping electric cylinder (25) is fixedly mounted on one side of the support base plate (20), an outer wall of an output end of the shaping electric cylinder (25) is slidably connected to the support base plate (20), and an output end of the shaping electric cylinder (25) is fixedly connected to a forming die (24); A controller (26) is provided on one side of the shaping electric cylinder (25), and the controller (26) is fixedly connected to the supporting base plate (20).

7. The die-casting device for thin-walled aluminum alloy die-casting according to claim 1, Features: The injection die-casting lateral safety protection mechanism comprises a support frame (27) slidably arranged on one side of the slide frame (4); The support frame (27) is fixedly connected to the fixed die-casting mold (1); a sliding column (28) is fixedly connected inside the support frame (27); an articulated sleeve (29) is slidably connected to the outer wall of the sliding column (28); the articulated sleeve (29) is fixedly connected to the slide frame (4); and the articulated sleeve (29) is slidably connected to the support frame (27); a pull shaft (30) is fixedly mounted on the bottom end of the inner wall of the articulated sleeve (29); The outer wall of the pulling shaft (30) is rotatably connected to a sleeve shaft (31), and the inner wall of the sleeve shaft (31) is rotatably connected to a linkage shaft (32) at a position away from the pulling shaft (30). A concave block (33) is fixedly installed at the bottom end of the linkage shaft (32), and the concave block (33) is slidably connected to the fixed die-casting mold (1); The bottom end of the concave block (33) is fixedly connected to a push block (34), a pressure sensor (35) is fixedly installed on one side of the push block (34), and a sensing end of the pressure sensor (35) is fixedly connected to an extrusion electric cylinder (36), and the extrusion electric cylinder (36) is fixedly connected to the fixed die-casting mold (1).

8. The die-casting device for thin-walled aluminum alloy die-casting according to claim 7, Features: The vertical cross-section of the concave block (33) is concave, and the push block (34) is slidably connected to the fixed die-casting mold (1).

9. The die-casting device for thin-walled aluminum alloy die-casting according to claim 1, Features: The injection die casting leakage detection assembly comprises a limit ring (37) fixedly arranged on the outer wall of the butt nozzle (3); A curved material plate (38) is fixedly connected to one side of the limiting ring (37), and the curved material plate (38) is fixedly connected to the fixed die-casting mold (1), and a guide groove (39) is provided on the inner wall of the curved material plate (38); A collar (40) is mounted on the inner wall of the guide groove (39), and the collar (40) is fixedly connected to the arc-shaped material plate (38). A high-temperature resistant distance sensor (41) is fixedly mounted on the inner wall of the collar (40), and two limit plates (42) are fixedly connected to the upper surface of the arc-shaped material plate (38).

10. The die-casting device for thin-walled aluminum alloy die-casting according to claim 9, Features: The vertical cross-section of the limiting ring (37) is in the shape of a circular ring, and the two limiting plates (42) are fixedly connected to the limiting ring (37).

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